Stator structure and method for manufacturing the stator structure

Abstract

The present disclosure aims to provide a stator structure that prevents misalignment in each of the two magnetic members when viewed along the central axis, thereby preventing a decrease in the detection accuracy of the resolver. [Solution] The stator structure 1 according to this disclosure comprises a first magnetic member 30 which is annular or part of an annular shape, a second magnetic member 40 which is annular or part of an annular shape, a non-magnetic member 50, and one or more support parts 70, wherein the first magnetic member 30 and the second magnetic member 40 are arranged opposite each other, the non-magnetic member 50 and each support part 70 are arranged between the first magnetic member 30 and the second magnetic member 40, and the first magnetic member 30 and the second magnetic member 40 are connected via each support part 70.

Description

Technical Field

[0001] The present disclosure relates to a stator structure and a method for manufacturing the stator structure.

Background Art

[0002] Conventionally, in a resolver stator, in order to reduce the amount of magnetic material used in a stator core and suppress the manufacturing cost of the stator core, a resolver stator in which a stator yoke and each tooth are formed from a single metal plate is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventional resolver stators use a single metal plate to construct the stator yoke and each tooth, thus reducing the amount of magnetic material used and successfully lowering manufacturing costs. Furthermore, to improve detection accuracy, the volume of the teeth is increased by using teeth that are formed by folding and laminating a portion of the metal plate in the direction along the axial direction. However, in such resolver stators, if one attempts to further improve detection accuracy by winding a coil around each tooth, winding the coil around each tooth that extends along the axis of rotation results in a large air gap between each tooth and the rotor, preventing further improvement in detection accuracy or even causing a decrease in detection accuracy. This problem was addressed by devising a stator with a novel configuration. Specifically, a stator body was used in which plate-shaped magnetic members, non-magnetic members, and magnetic members were laminated in this order along the axis of rotation. In other words, in such a stator body, the non-magnetic members are laminated with a pair of magnetic members sandwiched in between, so the required thickness of the stator body can be maintained while reducing the amount of magnetic material used for the magnetic members, thereby lowering manufacturing costs. Furthermore, by using such a stator body, it was possible to reduce the impedance of the coils and suppress the increase in the magnetic resistance of the stator body. In addition, with such a stator body, each tooth can be arranged to extend from the stator yoke toward the axis of rotation, so even when coils are wound around each tooth, it was possible to prevent the air gap between the teeth and the rotor from becoming too large. Therefore, in a resolver stator using such a stator body, it was possible to reduce the amount of magnetic material used, while maintaining and improving detection accuracy. However, with such a stator body, misalignment of the two magnetic members could occur when viewed along the central axis, and this misalignment of the magnetic members caused problems such as a decrease in the detection accuracy of the resolver.

[0005] This disclosure aims to provide a stator structure that prevents misalignment in each of the two magnetic members when viewed along the central axis, thereby preventing a decrease in the detection accuracy of the resolver, in order to solve the above problem. [Means for solving the problem]

[0006] The stator structure according to this disclosure comprises a first magnetic member which is annular or part of an annular shape, a second magnetic member which is annular or part of an annular shape, a non-magnetic member, and one or more support parts, wherein the first magnetic member and the second magnetic member are arranged opposite each other, the non-magnetic member and each support part are arranged between the first magnetic member and the second magnetic member, and the first magnetic member and the second magnetic member are connected via each support part.

[0007] A method for manufacturing a stator structure according to this disclosure comprises a preparation step of preparing a first magnetic member, a second magnetic member, a non-magnetic material, and one or more support parts; an arrangement step of placing the non-magnetic material between the first magnetic member and the second magnetic member in a state where the first magnetic member and the second magnetic member are arranged facing each other and the support parts are placed between the first magnetic member and the second magnetic member; and a curing step of curing the non-magnetic material to form a non-magnetic member, wherein in the arrangement step, at least the first magnetic member and the second magnetic member are connected via the support parts.

[0008] A method for manufacturing a stator structure according to this disclosure comprises a preparation step of preparing a first magnetic member, a second magnetic member, and a non-magnetic material; an arrangement step of arranging the first magnetic member and the second magnetic member facing each other and arranging the non-magnetic material between the first magnetic member and the second magnetic member; and a curing step of curing the non-magnetic material to form a non-magnetic member. In the preparation step, at least one or more first protrusions protruding from the surface of the first magnetic member are prepared on the first magnetic member, and at least one or more second protrusions protruding from the surface of the second magnetic member are prepared on the second magnetic member. In the arrangement step, the first magnetic member and the second magnetic member are arranged facing each other such that each first protrusion and the corresponding second protrusion are in contact with each other, thereby arranging corresponding support parts. In the arrangement step, at least the first magnetic member and the second magnetic member are connected via each support part. [Effects of the Invention]

[0009] According to the stator structure and the method for manufacturing the stator structure described herein, it is possible to prevent misalignment in each of the two magnetic members when viewed along the central axis, thereby preventing a decrease in the detection accuracy of the resolver. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram showing the stator structure according to Embodiment 1. [Figure 2] This is a cross-sectional view showing the section along line II-II in Figure 1. [Figure 3] This is an enlarged view showing a cross-section of the teeth portion in Figure 2. [Figure 4] This is a flowchart showing the manufacturing method of the stator structure according to Embodiment 1. [Figure 5] This is a schematic diagram showing a magnetic member according to Embodiment 2. [Figure 6] This is a side view of the magnetic teeth section as seen from the direction of arrow VI-VI in Figure 5. [Figure 7] Figure 5 is a schematic diagram showing the first magnetic member. [Figure 8] Figure 5 is a schematic diagram showing the second magnetic member. [Figure 9] Side view of the magnetic teeth portion where the second protruding portion according to the first modification of Embodiment 2 is arranged. [Figure 10] Side view of the magnetic teeth portion according to Embodiment 3. [Figure 11] Cross-sectional view showing a cross-section along a line in the radial direction of the magnetic teeth portion according to Embodiment 4. [Figure 12] Schematic view showing the first magnetic member in FIG. 11. [Figure 13] Schematic view showing the second magnetic member in FIG. 11. [Figure 14] Schematic view showing the magnetic teeth portion according to Embodiment 5. [Figure 15] Cross-sectional view showing a cross-section taken along line XV-XV in FIG. 14. [Figure 16] Schematic view showing the first teeth portion in FIG. 14. [Figure 17] Schematic view showing the second teeth portion in FIG. 14. [Figure 18] Cross-sectional view showing the magnetic teeth portion according to the first modification of Embodiment 5. [Figure 19] Cross-sectional view showing the magnetic teeth portion according to Embodiment 6. [Figure 20] Schematic view showing the magnetic member according to Embodiment 7. [Figure 21] Schematic view seen from the arrow XXI-XXI in FIG. 20. [Figure 22] Schematic view showing the first magnetic member in FIG. 20. [Figure 23] Schematic view showing the state before the formation of the first protruding portion in FIG. 22. [Figure 24] Schematic view showing the magnetic member according to Embodiment 8. [Figure 25] Schematic view seen from the arrow XXV-XXV in FIG. 24. [Figure 26] Schematic view showing the state before the formation of the first protruding portion in FIG. 25. [Figure 27] Schematic view showing the stator structure according to Embodiment 9. [Figure 28]Figure 27 is a cross-sectional view showing the section along the line XXVIII-XXVIII. [Figure 29] This is a side view of the magnetic teeth section as seen from the direction of the arrow XXIX-XXIX in Figure 27. [Figure 30] This is a schematic diagram showing the state before the formation of the first protrusion in Figure 27. [Figure 31] This is a side view of the magnetic teeth portion in which the second protrusion is arranged according to Modification 1 of Embodiment 9. [Figure 32] This is a schematic diagram showing the magnetic teeth portion according to Embodiment 10. [Figure 33] Figure 32 is a side view of the magnetic teeth section. [Figure 34] This is a schematic diagram showing the state before the formation of the first protrusion shown in Figure 33. [Figure 35] This is a side view of the magnetic teeth portion in which the second protrusion is arranged according to a modified example 1 of Embodiment 10. [Figure 36] This is a schematic diagram showing the magnetic teeth portion according to Embodiment 11. [Figure 37] Figure 36 is a side view of the magnetic teeth section. [Figure 38] This is a schematic diagram showing the state before the formation of the first protrusion in Figure 37. [Figure 39] This is a side view of the magnetic teeth portion on which the second protrusion is located according to Modification 1 of Embodiment 11. [Figure 40] This is a schematic diagram showing the magnetic teeth portion according to Embodiment 12. [Figure 41] Figure 40 is a side view of the magnetic teeth section. [Figure 42] This is a schematic diagram showing the magnetic teeth portion according to Embodiment 13. [Figure 43] Figure 42 is a side view of the magnetic teeth section. [Figure 44] This is a schematic diagram showing the magnetic teeth portion according to Embodiment 14. [Figure 45] Figure 44 is a side view of the magnetic teeth section. [Figure 46] This is a side view of the magnetic teeth portion according to Embodiment 15. [Figure 47] This is a schematic diagram showing a magnetic resin according to Embodiment 15. [Figure 48] This is a schematic diagram showing the stator structure in this disclosure. [Figure 49] Figure 48 is a cross-sectional view showing the cross-section along the XLIX-XLIX line. [Figure 50] Figure 48 is a schematic diagram showing the magnetic member. [Figure 51] Figure 50 is a schematic diagram showing the magnetic teeth section. [Figure 52] Figure 48 is a schematic diagram showing a part of the first magnetic member. [Figure 53] Figure 48 is a schematic diagram showing a part of the second magnetic member. [Figure 54] This is a conceptual diagram illustrating the method for forming a non-magnetic member in this disclosure. [Modes for carrying out the invention]

[0011] Embodiments of this disclosure will be described below with reference to the drawings. Embodiment 1. First, the basic structure of the stator structure 1 in this disclosure will be described. Figure 48 is a schematic diagram showing the stator structure 1 in this disclosure. Figure 49 is a cross-sectional view showing the cross-section along the line XLIX-XLIX in Figure 48. The stator structure 1 can be applied as a resolver or a stator for a torque sensor.

[0012] The stator structure 1 is annular in shape. The axis passing through the center of the annular shape of the stator structure 1 is called the central axis L. A rotating body 90, such as a rotor, is placed in a hole opened in the center of the annular shape of the stator structure 1. The central axis L and the rotation axis of the rotating body 90 coincide.

[0013] The stator structure 1 and the rotating body 90 are arranged in a non-contact manner. A resolver or torque sensor can use the stator structure 1 to detect physical quantities such as the rotation angle, rotation speed, or rotation torque of the rotating body 90.

[0014] The stator structure 1 comprises an annular stator body 10 and 14 coils 15. The stator body 10 has an annular yoke portion 11 and 14 teeth portions 12 extending radially inward from the yoke portion 11. Each coil 15 is arranged in each teeth portion 12.

[0015] The axis passing through the center of the annular yoke portion 11 is the same as the central axis L. Note that the number of teeth portions 12 and coils 15 is not limited to 14, and any number may be provided.

[0016] The stator body 10 includes an annular magnetic member 20, an annular non-magnetic member 50, and one or more support parts (not shown). The one or more support parts are not shown in Figures 48 and 49. These support parts will be described later.

[0017] The magnetic member 20 comprises a first magnetic member 30 and a second magnetic member 40. The first magnetic member 30 and the second magnetic member 40 are arranged facing each other. When viewed along the central axis L, the first magnetic member 30 and the second magnetic member 40 have annular shapes and are substantially identical in shape.

[0018] The first magnetic member 30 and the second magnetic member 40 are positioned opposite each other such that their external shapes coincide when viewed along the central axis L. That is, the shape of the magnetic member 20 when viewed along the central axis L is substantially the same as the shape of the first magnetic member 30 and the second magnetic member 40, respectively.

[0019] Figure 50 is a schematic diagram showing the magnetic member 20 according to Figure 48. Figure 50 shows the magnetic member 20 as viewed along the central axis L. The magnetic member 20 has an annular magnetic yoke portion 21 and 14 magnetic teeth portions 22 extending from the magnetic yoke portion 21 toward the center of the annular shape, i.e., toward the central axis L.

[0020] Each magnetic tooth portion 22 has a magnetic body portion 23 that extends from the magnetic yoke portion 21 and a magnetic tip portion 24 that extends from the magnetic body portion 23. As shown in Figures 48 and 49, a coil 15 corresponding to each magnetic body portion 23 is arranged.

[0021] Figure 51 is a schematic diagram showing the magnetic teeth portion 22 of Figure 50. Each magnetic body portion 23 has a pair of magnetic body edges 23a facing each other. Each of the pair of magnetic body edges 23a is an edge that faces each of the magnetic body portions 23 of the other magnetic teeth portions 22 located on either side.

[0022] Each magnetic tip portion 24 has a magnetic tip edge 24a formed at the very front of the magnetic tip portion 24, i.e., the tip facing the central axis L. Each magnetic tip portion 24 has a pair of magnetic side edge edges 24b, which are a pair of edges facing each of the other magnetic tip portions 24 located on either side of it. Each magnetic tip portion 24 has a pair of magnetic rear edge edges 24c that face the magnetic yoke portion 21 and sandwich the magnetic body portion 23.

[0023] Figure 52 is a schematic diagram showing a part of the first magnetic member 30 in Figure 48. Figure 52 shows one first tooth portion 32, which is a part of the first magnetic member 30 when viewed along the central axis L.

[0024] The first magnetic member 30, like the magnetic member 20, has an annular first yoke portion 31 and 14 first teeth portions 32 extending from the first yoke portion 31 toward the center of the annular shape, i.e., toward the central axis L. Each first tooth portion 32 has a first body portion 33 that continues from the first yoke portion 31 and a first tip portion 34 that continues from the first body portion 33.

[0025] Each first body section 33 has a pair of first purlins 33a that face each other. Each of the pair of first purlins 33a is a rim that faces each of the first body sections 33 of the other first teeth sections 32 located on either side.

[0026] Each first tip portion 34 has a first tip edge 34a formed at the very tip of the first tip portion 34, i.e., the tip facing the central axis L. Each first tip portion 34 has a pair of first side edge edges 34b that are opposite to each of the other first tip portions 34 located on either side. Each first tip portion 34 has a pair of first rear edge edges 34c that face the first yoke portion 31 and sandwich the first body portion 33.

[0027] Figure 53 is a schematic diagram showing a part of the second magnetic member 40 in Figure 48. Figure 53 shows one second tooth portion 42, which is a part of the second magnetic member 40 when viewed along the central axis L.

[0028] The second magnetic member 40, like the magnetic member 20 and the first magnetic member 30, has an annular second yoke portion 41 and 14 second teeth portions 42 extending from the second yoke portion 41 toward the annular center, i.e., toward the central axis L. Each second teeth portion 42 has a second body portion 43 that continues from the second yoke portion 41 and a second tip portion 44 that continues from the second body portion 43.

[0029] Each second body section 43 has a pair of second purlins 43a that face each other. Each of the pair of second purlins 43a is a rim that faces each of the second body sections 43 of the other second teeth sections 42 located on either side.

[0030] Each second tip portion 44 has a second tip edge 44a formed at the very tip of the second tip portion 44, i.e., the tip facing the central axis L. Each second tip portion 44 has a pair of second side edge edges 44b that are opposite to each of the other second tip portions 44 located on either side. Each second tip portion 44 has a pair of second rear edge edges 44c that face the second yoke portion 41 and sandwich the second body portion 43.

[0031] Returning to Figures 48 and 49, we continue the explanation. The non-magnetic member 50 is positioned between the first magnetic member 30 and the second magnetic member 40. The shape of the non-magnetic member 50 is substantially the same as that of the first magnetic member 30 and the second magnetic member 40. When viewed along the central axis L, the first magnetic member 30, the second magnetic member 40, and the non-magnetic member 50 are stacked and positioned so that their respective outer shapes match.

[0032] The magnetic members 20, namely the first magnetic member 30 and the second magnetic member 40, are made of magnetic material. Examples of magnetic materials include electrical steel sheets, permalloy, ferrite, nanocrystalline soft magnetic alloys, or amorphous alloys.

[0033] The non-magnetic component 50 is made of a non-magnetic material. Examples of non-magnetic materials include non-magnetic stainless steel or resin.

[0034] Figure 54 is a conceptual diagram showing a method for forming the non-magnetic member 50 in this disclosure. The non-magnetic member 50 can be formed by pouring a fluid non-magnetic material 50x between the first magnetic member 30 and the second magnetic member 40, which are magnetic members 20, and then curing it.

[0035] When pouring the non-magnetic material 50x into the magnetic member 20 placed in a mold (not shown), a molding pressure P is applied to the non-magnetic material 50x while pouring. At this time, the molding pressure P is applied to the entire magnetic member 20, including each magnetic tooth portion 22.

[0036] After pouring in the non-magnetic material 50x, the non-magnetic material 50x is cured. This makes it possible to manufacture a stator body 10 having non-magnetic members 50 placed between magnetic members 20.

[0037] The stator body 10, magnetic member 20, first magnetic member 30, second magnetic member 40, and non-magnetic member 50 are each annular in shape, but are not limited to this. For example, the stator body 10, magnetic member 20, first magnetic member 30, second magnetic member 40, and non-magnetic member 50 may each have a part of the annular shape cut out, i.e., they may be part of an annular shape.

[0038] Next, the stator structure 1 in Embodiment 1 will be described. The stator structure 1 in Embodiment 1 has the configuration of the stator structure 1 in this disclosure described with reference to Figures 48 to 54. Therefore, the description of the configuration of the stator structure 1 in Embodiment 1 that is the same as the configuration of the stator structure 1 in this disclosure described with reference to Figures 48 to 54 will be omitted.

[0039] Figure 1 is a schematic diagram showing the stator structure 1 according to Embodiment 1. Figure 2 is a cross-sectional view showing the cross-section along line II-II in Figure 1. Figure 3 is an enlarged view showing the cross-section of the teeth portion 12 in Figure 2.

[0040] The stator body 10 further has 14 support parts 70. Each support part 70 is positioned between the first magnetic member 30 and the second magnetic member 40.

[0041] Each support portion 70 is a columnar spacing member 71. Each spacing member 71 is a separate component from the first magnetic member 30 and the second magnetic member 40.

[0042] A first retaining mechanism 30h, which is a retaining mechanism for holding the spacing member 71, is formed at the first tip portion 34 of each first tooth portion 32 of the first magnetic member 30. A second retaining mechanism 40h, which is a retaining mechanism, is formed at the second tip portion 44 of each second tooth portion 42 of the second magnetic member 40.

[0043] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, each first holding mechanism 30h and its corresponding second holding mechanism 40h face each other. Each support portion 70 is held by the corresponding first holding mechanism 30h and second holding mechanism 40h, respectively, and is positioned between the first magnetic member 30 and the second magnetic member 40. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0044] Each support portion 70 is held by the corresponding first holding mechanism 30h and second holding mechanism 40h, respectively, and is positioned between the first magnetic member 30 and the second magnetic member 40, thereby determining the relative positional relationship between the first magnetic member 30 and the second magnetic member 40.

[0045] In other words, the respective positions of the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L, and the distance between each first tip portion 34 and the corresponding second tip portion 44, are determined by the fact that each support portion 70 is positioned in the desired location.

[0046] Each support portion 70, which is a spacing member 71, is a cylindrical member having a small-diameter projection at its tip and a large-diameter jaw at its rear end. Each first holding mechanism 30h and each second holding mechanism 40h are through holes formed in the first magnetic member 30 and the second magnetic member 40, respectively.

[0047] When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, when viewed along the central axis L, each first holding mechanism 30h and the corresponding second holding mechanism 40h overlap each other.

[0048] One spacing member 71 is inserted into both the first holding mechanism 30h and the second holding mechanism 40h, which are two through holes facing each other.

[0049] In detail, each spacing member 71 is inserted from its tip into the second holding mechanism 40h and the corresponding first holding mechanism 30h in the direction from the second magnetic member 40 toward the first magnetic member 30. In this arrangement, a non-magnetic member 50 is positioned between the first magnetic member 30 and the second magnetic member 40.

[0050] The non-magnetic member 50 is made of a hardened, fluid non-magnetic material 50x. The fluid non-magnetic material 50x is poured onto the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned at desired locations, and then hardened. In this way, the non-magnetic member 50 is positioned between the first magnetic member 30 and the second magnetic member 40.

[0051] The non-magnetic member 50 is in contact with the periphery of the spacing member 71, the area where the spacing member 71 and the first magnetic member 30 are in contact, and the area where the spacing member 71 and the second magnetic member 40 are in contact. As a result, the first magnetic member 30, the second magnetic member 40, and each of the spacing members 71, which are the support parts 70, are fixed in place.

[0052] Next, the method for manufacturing the stator structure 1 in Embodiment 1 will be described. Figure 4 is a flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1.

[0053] <Preparation process> First, in step S01, a preparation process is carried out. The preparation process involves preparing the components that make up the stator structure 1.

[0054] The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. Each of the parts prepared in the preparation step, namely the first magnetic member 30, the second magnetic member 40, and each support part 70, has already been machined into the desired shape.

[0055] For example, the first magnetic member 30 and the second magnetic member 40 are processed into a desired shape, and each of the first holding mechanism 30h and each of the second holding mechanism 40h is formed on them.

[0056] The nonmagnetic material 50x is prepared in a fluid state. As the nonmagnetic material 50x, a material that hardens by accelerating the crosslinking reaction can be used. For example, as the nonmagnetic material 50x, a material that hardens by accelerating the crosslinking reaction due to temperature changes may be used.

[0057] Furthermore, the non-magnetic material 50x may be one that hardens when an additive is added, for example. In that case, at least the additive should be prepared during the preparation step.

[0058] Furthermore, a non-magnetic material 50x with additives added may be prepared in the preparation step. If a non-magnetic material 50x with additives added is prepared in the preparation step, it is necessary to prepare a non-magnetic material 50x that has sufficient fluidity so that the next placement step can be carried out. This completes the preparation step. The process then proceeds to the next step.

[0059] <Placement process> In step S02, the placement process is carried out. The placement process is the process of placing the non-magnetic material 50x prepared in the preparation process between the first magnetic member 30 and the second magnetic member 40.

[0060] The worker arranges the first magnetic member 30, the second magnetic member 40, and the spacing members 71, which are the support members 70, so that the first magnetic member 30 and the second magnetic member 40 face each other and each support member 70 is located between the first magnetic member 30 and the second magnetic member 40.

[0061] Each spacing member 71 is inserted into the second holding mechanism 40h from below the second magnetic member 40, over the second magnetic member 40, toward the first magnetic member 30, and then inserted into the corresponding first holding mechanism 30h. As a result, each spacing member 71 is held and positioned in the first holding mechanism 30h and the second holding mechanism 40h, which are holding mechanisms formed on the corresponding first magnetic member 30 and second magnetic member 40.

[0062] In the arrangement step, the first magnetic member 30, the second magnetic member 40, and each of the support parts 70 are arranged such that at least the first magnetic member 30 and the second magnetic member 40 are connected via each of the support parts 70. In the arrangement step, since the first magnetic member 30, the second magnetic member 40, and each of the support parts 70 are arranged in the desired positions, the respective positions of the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L, and the distance between each first tip 34 and the corresponding second tip 44 are determined.

[0063] In other words, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by positioning the first magnetic member 30, the second magnetic member 40, and each support part 70 in the desired positions. The worker places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in the desired positions, into a mold (not shown).

[0064] Next, the worker closes the mold and pours the non-magnetic material 50x into it. At this time, as shown in Figure 54, the non-magnetic material 50x is poured onto the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in predetermined locations, under molding pressure P.

[0065] The non-magnetic material 50x is poured into the magnetic members 20 and each support portion 70, which are arranged in the mold in a desired positional relationship. That is, the non-magnetic material 50x is filled and positioned between the opposing first magnetic member 30 and second magnetic member 40.

[0066] The placement process is completed when a specified amount of non-magnetic material 50x is poured into the mold. The process then proceeds to the next step.

[0067] The first magnetic member 30, the second magnetic member 40, and each support part 70 may be arranged while being placed inside the mold. In the arrangement process, it is sufficient that the non-magnetic material 50x is placed between the first magnetic member 30 and the second magnetic member 40 in the final state where the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the predetermined location.

[0068] Furthermore, when using a non-magnetic material 50x that hardens by the addition of additives, the additives should be added to the non-magnetic material 50x in advance as appropriate.

[0069] <Curing process> In step S03, a curing process is carried out. The curing process is the process of curing the non-magnetic material 50x in the mold that was placed in the placement process.

[0070] In the curing process, the mold containing the first magnetic member 30, the second magnetic member 40, each support part 70, and the non-magnetic material 50x obtained in the placement process is left undisturbed to allow the non-magnetic material 50x to cure. Once sufficient time has elapsed for the non-magnetic material 50x to cure, it hardens and becomes the non-magnetic member 50. This completes the curing process.

[0071] Furthermore, in order to cure the non-magnetic material 50x, it is necessary to promote the cross-linking reaction of the resin. Depending on the resin, it may suffice to simply leave the mold in a specific location, or it may be left in an environment that allows the non-magnetic material 50x to cure in a short time. For example, it may be left in an environment with a temperature higher than typical room temperature.

[0072] After the curing process is complete, the mold is opened and the stator body 10 is removed from the mold. The coils 15 are then placed on the removed stator body 10, and the connections of each component are made, completing the manufacturing of the stator structure 1.

[0073] When the curing process is complete, the cured non-magnetic member 50 is in contact with the first magnetic member 30, the second magnetic member 40, and each support part 70. That is, because the non-magnetic material 50x in a fluid state is cured in a state where it is in close contact with the first magnetic member 30, the second magnetic member 40, and each support part 70, the cured non-magnetic member 50 is in close contact with the first magnetic member 30, the second magnetic member 40, and each support part 70.

[0074] In other words, the relative positions of the first magnetic member 30, the second magnetic member 40, and each support part 70 are determined and fixed by the non-magnetic member 50, which is a hardened non-magnetic material 50x.

[0075] In Embodiment 1, the non-magnetic member 50 is obtained by pouring a fluid non-magnetic material 50x between the first magnetic member 30 and the second magnetic member 40 and allowing it to harden. However, the invention is not limited to this. A solid non-magnetic member 50 may be placed between the first magnetic member 30 and the second magnetic member 40. In this case, the fixing of the first magnetic member 30, the second magnetic member 40, and the non-magnetic member 50 can be achieved by well-known methods. For example, fixing methods such as crimping, screwing, fixing with pins, or fixing with adhesive can be used. Furthermore, in this case, the non-magnetic member 50 may be configured to be in contact with the first magnetic member 30, the second magnetic member 40, and each support part 70, thereby further firmly fixing their respective positions. In this case, the hardening process is unnecessary.

[0076] Furthermore, in Embodiment 1, the support portion 70 is arranged on each magnetic tooth portion 22. However, it is not limited to this. The support portion 70 does not have to be arranged on each of the magnetic tooth portions 22. For example, only one support portion 70 may be arranged on a corresponding magnetic tooth portion 22. Also, the support portion 70 may be arranged at a location other than the magnetic tooth portion 22. For example, the support portion 70 may be arranged on the magnetic yoke portion 21. Even when the support portion 70 is arranged on the magnetic yoke portion 21, it is sufficient that at least one or more support portions 70 are arranged there. This increases the degree of freedom regarding the arrangement position of the support portion 70, and allows the support portion 70 to be arranged in a more appropriate position considering various requirements.

[0077] Furthermore, the spacing member 71 of this embodiment 1 is cylindrical and has a small-diameter projection and a jaw portion. However, it is not limited to this. The shape of the spacing member 71 is not limited to a cylindrical shape and may be set as appropriate. Also, the shapes of the projection and jaw portion of the spacing member 71 may be set as appropriate. Moreover, the spacing member 71 may not have a projection and a jaw portion at all.

[0078] Furthermore, the first retaining mechanism 30h and the second retaining mechanism 40h in this embodiment 1 are through holes. However, the embodiment is not limited to this. The shapes of the first retaining mechanism 30h and the second retaining mechanism 40h may be set as appropriate. The first retaining mechanism 30h and the second retaining mechanism 40h can have any shape as long as they can hold the spacing retaining member 71. For example, they may be recesses that match the shape of the spacing retaining member 71, or protruding parts. If the first retaining mechanism 30h and the second retaining mechanism 40h are protruding parts, recesses corresponding to the protrusions may be formed in the spacing retaining member 71. Moreover, the first retaining mechanism 30h and the second retaining mechanism 40h may each be a through hole and a screw inserted into the through hole. In this case, screw holes corresponding to the screw may be formed in the spacing retaining member 71.

[0079] Furthermore, the first magnetic member 30 and the second magnetic member 40 of this embodiment 1 are provided with a first retaining mechanism 30h and a second retaining mechanism 40h. However, the embodiment is not limited to this. For example, the first magnetic member 30 and the second magnetic member 40 do not need to have the first retaining mechanism 30h and the second retaining mechanism 40h. In this case, the spacing member 71 is simply positioned between the first magnetic member 30 and the second magnetic member 40. Moreover, in this case, the spacing member 71 does not need to have small-diameter protrusions and jaws.

[0080] The stator structure 1 according to Embodiment 1 comprises a first magnetic member 30 which is annular or part of an annular shape, a second magnetic member 40 which is annular or part of an annular shape, a non-magnetic member 50, and one or more support parts 70. The first magnetic member 30 and the second magnetic member 40 are arranged facing each other. The non-magnetic member 50 and each support part 70 are arranged between the first magnetic member 30 and the second magnetic member 40. The first magnetic member 30 and the second magnetic member 40 are connected via each support part 70. This prevents misalignment between the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L. Therefore, when this stator structure 1 is used in a resolver, a resolver with high detection accuracy can be provided.

[0081] In the stator structure 1 according to Embodiment 1, the non-magnetic member 50 is in contact with the first magnetic member 30, the second magnetic member 40, and each support portion 70. As a result, the movement of each of the first magnetic member 30, the second magnetic member 40, and each support portion 70 is prevented by the contact of the non-magnetic member 50. Therefore, when viewed along the central axis L, misalignment between the first magnetic member 30 and the second magnetic member 40 can be further prevented. Consequently, when this stator structure 1 is used as a resolver, a resolver with higher detection accuracy can be provided.

[0082] In the stator structure 1 according to Embodiment 1, the non-magnetic member 50 is a hardened non-magnetic material 50x placed between the first magnetic member 30 and the second magnetic member 40. As a result, the non-magnetic material 50x hardens in contact with the first magnetic member 30, the second magnetic member 40 and each support part 70, thereby more firmly fixing the first magnetic member 30 and the second magnetic member 40. Therefore, when viewed along the central axis L, misalignment between the first magnetic member 30 and the second magnetic member 40 can be more effectively prevented. Thus, when this stator structure 1 is used as a resolver, a resolver with higher detection accuracy can be provided. Furthermore, this prevents plastic deformation of the first magnetic member 30 and the second magnetic member 40 due to the molding pressure P applied to the non-magnetic material 50x when it is filled between the first magnetic member 30 and the second magnetic member 40. Therefore, there is no need to lower the molding pressure P, and there is no need to select a non-magnetic material 50x with high fluidity in order to lower the molding pressure P. Therefore, plastic deformation of the first magnetic member 30 and the second magnetic member 40 can be prevented, and the range of materials for the non-magnetic material 50x can be increased.

[0083] In the stator structure 1 according to Embodiment 1, the first magnetic member 30 has a first yoke portion 31 that is annular or part of an annular shape, and a plurality of first teeth portions 32 that extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 has a second yoke portion 41 that is annular or part of an annular shape, and a plurality of second teeth portions 42 that extend from the second yoke portion 41 toward the center of the annular shape. Each support portion 70 is positioned at least between the first teeth portion 32 and the corresponding second teeth portion 42. This allows the spacing between the first teeth portion 32 and the corresponding second teeth portion 42 to be determined and maintained. Thus, a stator structure 1 having the designed shape can be provided. Furthermore, this makes it possible to further prevent plastic deformation of the first teeth portion 32 and the corresponding second teeth portion 42, which are easily deformed by the non-magnetic material 50x to which molding pressure P is applied. Thus, a stator structure 1 that can obtain more accurate detection results can be provided.

[0084] In the stator structure 1 according to Embodiment 1, each support portion 70 is a spacing member 71, which is a separate component from the first magnetic member 30 and the second magnetic member 40. This allows for the application of stator structures 1 with different shapes, even when using the same first magnetic member 30 and second magnetic member 40, by freely designing the size and height of the spacing member 71. Consequently, the versatility of the first magnetic member 30, the second magnetic member 40, and each support portion 70 can be increased. Therefore, a wide variety of stator structures 1 can be developed.

[0085] In the stator structure 1 according to Embodiment 1, a first magnetic member 30 and a second magnetic member 40, on which each support portion 70 is arranged, are each formed with a holding mechanism, a first holding mechanism 30h and a second holding mechanism 40h. Furthermore, each holding mechanism, the first holding mechanism 30h and the second holding mechanism 40h, can hold the corresponding spacing holding member 71. In addition, each spacing holding member 71 held by each holding mechanism, the first holding mechanism 30h and the second holding mechanism 40h, is positioned between the first magnetic member 30 and the second magnetic member 40. As a result, each spacing holding member 71 is securely held by each holding mechanism, the first holding mechanism 30h and the second holding mechanism 40h. Therefore, the positional position of each spacing holding member 71 does not shift, and misalignment between the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L can be further prevented.

[0086] In the stator structure 1 according to Embodiment 1, each retaining mechanism 30h, 40h consists of one or more first retaining mechanisms 30h which are through holes formed in the first magnetic member 30, and one or more second retaining mechanisms 40h which are through holes formed in the second magnetic member 40. Furthermore, each first retaining mechanism 30h and its corresponding second retaining mechanism 40h face each other. In addition, a spacing retaining member 71 corresponding to the facing first retaining mechanism 30h and second retaining mechanism 40h is inserted, so that each spacing retaining member 71 is positioned between the first magnetic member 30 and the second magnetic member 40. This allows each spacing retaining member 71 to be held in a simpler configuration without requiring a complex retaining mechanism. Therefore, the manufacturing cost of the stator structure 1 can be further reduced. Furthermore, this allows the first retaining mechanisms 30h to be formed simultaneously when the first magnetic member 30 is punched out. Therefore, each retaining mechanism 30h, 40h can be formed without significantly affecting the processing steps.

[0087] The manufacturing method for the stator structure 1 according to Embodiment 1 includes a preparation step S01 for preparing a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and one or more support parts 70. It also includes an arrangement step S02 for placing the non-magnetic material 50x between the first magnetic member 30 and the second magnetic member 40 in a state where the first magnetic member 30 and the second magnetic member 40 are arranged facing each other and the support parts 70 are placed between the first magnetic member 30 and the second magnetic member 40. It also includes a hardening step S03 for hardening the non-magnetic material 50x to form a non-magnetic member 50. Furthermore, in the arrangement step S02, at least the first magnetic member 30 and the second magnetic member 40 are connected via the support parts 70. This prevents misalignment between the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L. Therefore, it is possible to manufacture a stator structure 1 that can be used in resolvers with higher detection accuracy. Furthermore, as a result, the non-magnetic material 50x hardens in contact with the first magnetic member 30, the second magnetic member 40, and each support part 70, thus more firmly fixing the first magnetic member 30 and the second magnetic member 40. Therefore, when viewed along the central axis L, misalignment between the first magnetic member 30 and the second magnetic member 40 can be prevented. Thus, when this stator structure 1 is used in a resolver, a resolver with higher detection accuracy can be manufactured. In addition, as a result, plastic deformation of the first magnetic member 30 and the second magnetic member 40 due to the molding pressure P applied to the non-magnetic material 50x when it is filled between the first magnetic member 30 and the second magnetic member 40 can be prevented. Thus, a stator structure 1 can be manufactured for use in resolvers with higher detection accuracy. Furthermore, as a result, there is no need to lower the molding pressure P, and there is no need to select a non-magnetic material 50x with high fluidity in order to lower the molding pressure P. Thus, a method for manufacturing the stator structure 1 with a wide range of material options for the non-magnetic material 50x can be provided.

[0088] In the manufacturing method of the stator structure 1 according to Embodiment 1, the first magnetic member 30 and the second magnetic member 40, which are prepared in the preparation step S01, have a first holding mechanism 30h and a second holding mechanism 40h formed on them, which are holding mechanisms for holding each support portion 70. Also in the preparation step S01, spacing holding members 71 are prepared as each support portion 70. In the arrangement step S02, each spacing holding member 71 is held by the first holding mechanism 30h and the second holding mechanism 40h, which are holding mechanisms formed on the corresponding first magnetic member 30 and the second magnetic member 40. As a result, each spacing holding member 71 is securely held by the first holding mechanism 30h and the second holding mechanism 40h. Therefore, it is possible to provide a manufacturing method of the stator structure 1 that prevents misalignment of the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L, without the arrangement position of each spacing holding member 71 shifting.

[0089] In the manufacturing method of the stator structure 1 according to Embodiment 1, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Furthermore, in the state in arrangement step S02 where each support portion 70 is positioned between the first magnetic member 30 and the second magnetic member 40, each support portion 70 is positioned at least between the first teeth portion 32 and the corresponding second teeth portion 42. This makes it possible to determine and maintain the distance between the first teeth portion 32 and the corresponding second teeth portion 42. Thus, a stator structure 1 with the designed precision can be provided. Furthermore, this prevents bending of the first tooth portion 32 and the corresponding second tooth portion 42 due to molding pressure P during filling of the non-magnetic material 50x. Therefore, a stator structure 1 with higher detection accuracy can be manufactured.

[0090] Embodiment 2. The stator structure 1 in Embodiment 2 differs from the stator structure 1 in Embodiment 1 in that each support portion 70 has a cylindrical first projection 30a. Figure 5 is a schematic diagram showing the magnetic member 20 according to Embodiment 2. Figure 6 is a side view of the magnetic teeth portion 22 as seen from the line VI-VI in Figure 5. In Figure 6, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0091] Each support portion 70 is positioned on each magnetic tooth portion 22. More specifically, each support portion 70 is positioned between the first body portion 33 of each first tooth portion 32 and the second body portion 43 of the corresponding second tooth portion 42.

[0092] Each support portion 70 is a first projection 30a, which is a portion that extends from the first magnetic member 30 and is formed to protrude from the surface of the first magnetic member 30. The first projection 30a is formed on the corresponding first body portion 33.

[0093] Specifically, the first protrusion 30a is a portion of a metal plate that has been punched out into a desired shape, with the corresponding portion protruding. The portion of the metal plate other than the first protrusion 30a constitutes the first magnetic member 30. In order to make the first protrusion 30a protrude, the metal plate is plastically deformed using a well-known processing method. The shape of the first protrusion 30a can be selected to be a suitable shape such as a columnar or mountain-shaped.

[0094] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the first projection 30a protrudes toward the second magnetic member 40. The tip of each first projection 30a, which is each support portion 70, is in contact with the surface of the second magnetic member 40.

[0095] Figure 7 is a schematic diagram showing the first magnetic member 30 in Figure 5. Figure 8 is a schematic diagram showing the second magnetic member 40 in Figure 5. Figure 7 shows the surface of the first magnetic member 30 facing the second magnetic member 40. Figure 8 shows the surface of the second magnetic member 40 facing the first magnetic member 30.

[0096] As shown in Figure 7, in the first magnetic member 30, the first protrusions 30a are formed on each of the first body portions 33. On the other hand, in the second magnetic member 40, as shown in Figure 8, no protruding portions are formed.

[0097] Returning to Figures 5 and 6, we will continue the explanation. The first magnetic member 30 and the second magnetic member 40 are positioned opposite each other such that the tips of the first protrusions 30a, which are the support portions 70, are in contact with the corresponding surfaces of the second magnetic member 40. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via the support portions 70.

[0098] Each support portion 70 is in contact with the corresponding surface of the second magnetic member 40 and is positioned between the first magnetic member 30 and the second magnetic member 40, thereby determining the relative positional relationship between the first magnetic member 30 and the second magnetic member 40.

[0099] In other words, the respective positions of the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L, and the distance between each first tip portion 34 and the corresponding second tip portion 44 are determined by positioning each support portion 70 in the desired location. The other configurations of the stator structure 1 according to Embodiment 2 are the same as those of the stator structure 1 according to Embodiment 1, so their description is omitted.

[0100] Next, the method for manufacturing the stator structure 1 in Embodiment 2 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 2 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0101] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. Each support part 70 is prepared as a first projection 30a already formed on the first magnetic member 30.

[0102] Specifically, in the first magnetic member 30 that is prepared, a portion of each first body portion 33 protrudes, forming each first protrusion 30a. The first magnetic member 30 and each support portion 70 prepared in the preparation step are already processed and prepared in the preparation step with the first protrusion 30a formed on each first body portion 33. <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At that time, the first magnetic member 30 is positioned relative to the second magnetic member 40 such that the protruding tips of each first projection 30a, which are each support portion 70, are in contact with the second magnetic member 40. In other words, in the positioning step, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0103] When the first magnetic member 30, the second magnetic member 40, and each support portion 70 are positioned in the desired location, the respective positions of the first magnetic member 30 and the second magnetic member 40, as well as the distance between each first tip portion 34 and the corresponding second tip portion 44, are determined when viewed along the central axis L.

[0104] In other words, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by positioning each support part 70 in the desired location. The worker places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in the desired location, into a mold (not shown).

[0105] The other components of the method for manufacturing the stator structure 1 according to Embodiment 2 described above are the same as the other components of the method for manufacturing the stator structure 1 according to Embodiment 1, so their description will be omitted.

[0106] In Embodiment 2, the support portion 70 is located on each magnetic tooth portion 22. However, this is not the only possible arrangement. The support portion 70 does not need to be located on every magnetic tooth portion 22. For example, only one support portion 70 may be located on a single magnetic tooth portion 22. Furthermore, the support portion 70 may be located at a location other than the magnetic tooth portion 22. For example, the support portion 70 may be located on the magnetic yoke portion 21. Even when the support portion 70 is located on the magnetic yoke portion 21, it is sufficient that at least one or more support portions 70 are located there. This increases the degree of freedom regarding the placement of the support portion 70, allowing the support portion 70 to be placed in a more appropriate location considering various requirements.

[0107] In the stator structure 1 according to Embodiment 2, each support portion 70 is a first projection 30a, which is a portion formed on at least the first magnetic member 30 and protruding toward the second magnetic member 40. Furthermore, the tip of each first projection 30a, which is each support portion 70, is in contact with the second magnetic member 40. As a result, the support portion 70 can be prepared by simply deforming a part of the metal plate used for the first magnetic member 30. Therefore, each support portion 70, which is each first projection 30a, can be prepared using a well-known processing method for the metal plate. Thus, the manufacturing cost of the stator structure 1 is not significantly increased.

[0108] In the manufacturing method of the stator structure 1 according to Embodiment 2, each support portion 70 is arranged on the first magnetic member 30 prepared in preparation step S01. Each support portion 70 prepared in preparation step S01 is a first protruding portion 30a, which is a portion that protrudes from the surface of the first magnetic member 30. In arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other so that each support portion 70 is in contact with the second magnetic member 40. As a result, since each support portion 70 is arranged on the first magnetic member 30, in arrangement step S02, by paying attention only to the arrangement of the first magnetic member 30 and the second magnetic member 40, each support portion 70 can be arranged in the designed position between the first magnetic member 30 and the second magnetic member 40. Therefore, the stator structure 1 can be manufactured by simplifying the arrangement process. Furthermore, as a result, the support portions 70 can be prepared by only deforming a part of the metal plate used for the first magnetic member 30. Therefore, each support portion 70, which is each first protrusion 30a, can be prepared using a well-known processing method for metal plates. Thus, the stator structure 1 can be manufactured without significantly increasing manufacturing costs.

[0109] Modification 1 of Embodiment 2. The stator structure 1 in the modified example 1 of Embodiment 2 differs from the stator structure 1 in Embodiment 2 in that at least one support portion 70 is composed of a first projection 30a, and at least one support portion 70 is composed of a second projection 40a formed on the second magnetic member 40. Figure 9 is a side view of the magnetic teeth portion 22 in which the second projection 40a according to the modified example 1 of Embodiment 2 is arranged. In Figure 9, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0110] Each support portion 70 is positioned on each magnetic tooth portion 22. That is, at least one of the support portions 70 is a first protrusion 30a, which is a portion formed to protrude from the surface of the first magnetic member 30. Also, at least one of the support portions 70 is a second protrusion 40a, which is a portion formed to protrude from the surface of the second magnetic member 40. The second protrusion 40a is formed on the corresponding second body portion 43.

[0111] The second protrusion 40a is formed by making a corresponding part of the second magnetic member 40 protrude using a well-known processing method such as plastic deformation. The shape of the second protrusion 40a can be selected to be a suitable shape such as a columnar shape or a mountain shape.

[0112] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the second projection 40a protrudes toward the first magnetic member 30. The tip of the second projection 40a, which is the support portion 70, is in contact with the surface of the first magnetic member 30.

[0113] Each support portion 70 can be provided at an appropriate position. For example, adjacent magnetic teeth portions 22 may alternately be provided with a support portion 70 which is a first protrusion 30a and a support portion 70 which is a second protrusion 40a. Furthermore, the same magnetic body portion 23 may be provided with a support portion 70 which is a first protrusion 30a and a support portion 70 which is a second protrusion 40a.

[0114] The first magnetic member 30 and the second magnetic member 40 are arranged facing each other such that the tip of each first projection 30a, which is a support portion 70, is in contact with the corresponding surface of the second magnetic member 40, and the tip of each second projection 40a, which is a support portion 70, is in contact with the corresponding surface of the first magnetic member 30. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0115] Each support portion 70 is positioned between the first magnetic member 30 and the second magnetic member 40, in contact with the corresponding surface of the first magnetic member 30 or the corresponding surface of the second magnetic member 40, thereby determining the relative positional relationship between the first magnetic member 30 and the second magnetic member 40.

[0116] In other words, the respective positions of the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L, and the distance between each first tip portion 34 and the corresponding second tip portion 44 are determined by positioning each support portion 70 in the desired location. The other configurations of the stator structure 1 in the modified example 1 of Embodiment 2 are the same as those of the stator structure 1 in Embodiment 2, so their description is omitted.

[0117] In the preparation process, the worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. Each support part 70 is prepared as a first protrusion 30a already formed on the first magnetic member 30 and a second protrusion 40a already formed on the second magnetic member 40.

[0118] Specifically, in the first magnetic member 30 that is prepared, a portion of each first body portion 33 protrudes, forming each first protrusion 30a, and in the second magnetic member 40 that is prepared, a portion of each second body portion 43 protrudes, forming each second protrusion 40a.

[0119] Furthermore, in the placement process, the worker places the first magnetic member 30 and the second magnetic member 40 facing each other. At that time, the protruding tip of each first protrusion 30a, which is each support part 70, is placed in contact with the second magnetic member 40, and the protruding tip of each second protrusion 40a, which is each support part 70, is placed in contact with the first magnetic member 30.

[0120] In other words, during the arrangement process, at least the first magnetic member 30 and the second magnetic member 40 are connected via their respective support portions 70. The relative positional relationship between the first tip portion 34 and the second tip portion 44 is determined by the desired arrangement of the first magnetic member 30, the second magnetic member 40, and their respective support portions 70. The other components of the manufacturing method for the stator structure 1 in the modified example 1 of Embodiment 2 are the same as those of the manufacturing method for the stator structure 1 in Embodiment 2, so their description is omitted.

[0121] The stator structure 1 according to the modified example 1 of Embodiment 2 comprises two or more support parts 70, and at least one support part 70 is a second projection 40a formed on the second magnetic member 40 and projecting toward the first magnetic member 30. Furthermore, the tip of each second projection 40a, which is each support part 70, is in contact with the first magnetic member 30. This allows each support part 70 to be positioned on the first magnetic member 30 and the second magnetic member 40, respectively. Consequently, the degree of freedom in designing the magnetic path and strength for the first magnetic member 30 and the second magnetic member 40 can be further improved.

[0122] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 2, two or more support parts 70 are prepared in the preparation step S01. At least one of the support parts 70 prepared in the preparation step S01 is a second projection 40a, which is a portion that protrudes perpendicularly from the surface of the second magnetic member 40. In the arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other such that each second projection 40a is in contact with the first magnetic member 30. This makes it possible to manufacture a stator structure 1 having support parts 70 positioned at arbitrary positions on the first magnetic member 30 and the second magnetic member 40. Therefore, it is possible to provide a manufacturing method for the stator structure 1 that offers greater freedom in designing the magnetic path and strength.

[0123] Embodiment 3. The stator structure 1 in Embodiment 3 differs from the stator structure 1 in Embodiment 2 in that each support portion 70 is composed of a first protrusion 30a and a corresponding second protrusion 40a. Figure 10 is a side view of the magnetic teeth portion 22 according to Embodiment 3. Figure 10 shows the side view of the magnetic teeth portion 22 in the magnetic member 20 of Embodiment 3, as seen from the direction of arrow VI-VI in Figure 5. In Figure 10, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0124] Each support portion 70 is positioned on each magnetic tooth portion 22. Specifically, each support portion 70 is positioned between the first body portion 33 of each first tooth portion 32 and the second body portion 43 of the corresponding second tooth portion 42.

[0125] Each support portion 70 is composed of a first protrusion 30a, which is a portion formed to protrude from the surface of the first magnetic member 30, and a second protrusion 40a, which is a portion formed to protrude from the surface of the second magnetic member 40. Specifically, the first protrusion 30a is formed on the first body portion 33, and the second protrusion 40a is formed on the second body portion 43.

[0126] The first protrusion 30a is a portion of the first magnetic member 30 that has been made to protrude from a corresponding location using a well-known processing method such as plastic deformation. The shape of the first protrusion 30a can be selected to be a columnar shape or a mountain shape, or any other appropriate shape. When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, the first protrusion 30a protrudes toward the second magnetic member 40.

[0127] The second protrusion 40a is a portion of the second magnetic member 40 that has been made to protrude from a corresponding location using a well-known processing method such as plastic deformation. The shape of the second protrusion 40a can be selected to be a columnar shape or a mountain shape, or any other appropriate shape. When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, the second protrusion 40a protrudes toward the first magnetic member 30.

[0128] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the tip of each first protrusion 30a and the corresponding tip of the second protrusion 40a are in contact with each other. One support portion 70 is formed by one first protrusion 30a and the corresponding second protrusion 40a. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0129] The first protrusion 30a and the second protrusion 40a constituting each support portion 70 are in contact and positioned between the first magnetic member 30 and the second magnetic member 40, thereby determining the relative positional relationship between the first magnetic member 30 and the second magnetic member 40. In other words, the respective positions of the first magnetic member 30 and the second magnetic member 40, as well as the distance between the first magnetic member 30 and the second magnetic member 40, when viewed along the central axis L, are determined by positioning each support portion 70 in the desired location.

[0130] The other components of the stator structure 1 according to Embodiment 3 are the same as those of the stator structure 1 according to Embodiment 2, so their description will be omitted.

[0131] Next, the manufacturing method of the stator structure 1 in Embodiment 3 will be described. The flowchart showing the manufacturing method of the stator structure 1 according to Embodiment 3 is the same as the flowchart showing the manufacturing method of the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0132] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x for the manufacture of the stator structure 1. The first magnetic member 30 prepared in the preparation step is prepared with a first projection 30a that protrudes from the surface of the first magnetic member 30 already formed thereon.

[0133] The second magnetic member 40, which is prepared in the preparation step, is prepared with a second protrusion 40a that protrudes from the surface of the second magnetic member 40 already formed thereon. Here, the first protrusion 30a is formed on the first body portion 33, and the second protrusion 40a is formed on the second body portion 43.

[0134] <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At that time, the first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that each first protrusion 30a and the corresponding second protrusion 40a are in contact with each other.

[0135] The first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that the tips of the first protrusions 30a and the corresponding tips of the second protrusions 40a are in contact with each other. As a result, the support portions 70 are positioned between the first magnetic member 30 and the second magnetic member 40. In other words, during the arrangement process, at least the first magnetic member 30 and the second magnetic member 40 are connected via the support portions 70.

[0136] The relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by positioning the first magnetic member 30, the second magnetic member 40, and each support part 70 in the desired location. The worker places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in the desired location, into a mold (not shown).

[0137] Regarding the manufacturing method of the stator structure 1 according to Embodiment 3 described above, the other components are the same as those of the manufacturing method of the stator structure 1 according to Embodiment 2, so their description will be omitted.

[0138] In the stator structure 1 according to Embodiment 3, each support portion 70 is composed of a first protrusion 30a formed on the first magnetic member 30 and projecting toward the second magnetic member 40, and a second protrusion 40a formed on the second magnetic member 40 and projecting toward the first magnetic member 30. Furthermore, the tip of each first protrusion 30a and the corresponding tip of the second protrusion 40a are in contact with each other. This makes it possible to lower the protrusion height of each of the first protrusions 30a and the second protrusions 40a compared to the protrusion height of the first protrusion 30a when the support portion 70 is composed only of the first protrusion 30a. Consequently, the amount of deformation of the first magnetic member 30 and the second magnetic member 40 can be reduced. Therefore, it is possible to form a support portion 70 that has little influence on the magnetic paths formed in the first magnetic member 30 and the second magnetic member 40, and when the stator structure 1 is used as a resolver, it does not significantly affect the detection accuracy.

[0139] The manufacturing method for the stator structure 1 according to Embodiment 3 includes a preparation step S01 for preparing a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x. It also includes an arrangement step S02 for arranging the first magnetic member 30 and the second magnetic member 40 facing each other, and arranging the non-magnetic material 50x between the first magnetic member 30 and the second magnetic member 40. It also includes a curing step S03 for curing the non-magnetic material 50x to form a non-magnetic member 50. In the preparation step S01, at least one or more first protrusions 30a protruding from the surface of the first magnetic member 30 are prepared on the first magnetic member 30, and at least one or more second protrusions 40a protruding from the surface of the second magnetic member 40 are prepared on the second magnetic member 40. In the arrangement step S02, the corresponding support portion 70 is arranged by arranging the first magnetic member 30 and the second magnetic member 40 facing each other so that each first protrusion 30a and the corresponding second protrusion 40a are in contact with each other. Furthermore, in the arrangement step S02, at least the first magnetic member 30 and the second magnetic member 40 are connected via their respective support parts 70. This allows the first magnetic member 30 and the second magnetic member 40 to be formed in the same shape. Consequently, the characteristics resulting from the shape, such as the formation of the magnetic paths of the first magnetic member 30 and the second magnetic member 40, can be made identical. Thus, the stator structure 1 can be manufactured using the first magnetic member 30 and the second magnetic member 40, which have contrasting characteristics.

[0140] In the manufacturing method of the stator structure 1 according to Embodiment 3, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Furthermore, in the state in arrangement step S02 where each support portion 70 is positioned between the first magnetic member 30 and the second magnetic member 40, each support portion 70 is positioned at least between the first teeth portion 32 and the corresponding second teeth portion 42. This makes it possible to determine and maintain the distance between the first teeth portion 32 and the corresponding second teeth portion 42. Thus, a stator structure 1 with the designed accuracy can be provided. Furthermore, this prevents bending of the first tooth portion 32 and the corresponding second tooth portion 42 due to molding pressure P during filling of the non-magnetic material 50x. Therefore, a stator structure 1 with higher detection accuracy can be manufactured.

[0141] Embodiment 4. The stator structure 1 in Embodiment 4 differs from the stator structure 1 in Embodiment 3 in that each support portion 70 is composed of a first protrusion 30a which is a convex ridge and a second protrusion 40a which is a corresponding convex ridge. Figure 11 is a cross-sectional view showing a line along the radial direction of the magnetic teeth portion 22 according to Embodiment 4.

[0142] Each support portion 70 is positioned on each magnetic tooth portion 22. Each support portion 70 consists of a first protrusion 30a, which is a portion formed to protrude from the surface of the first magnetic member 30, and a second protrusion 40a, which is a portion formed to protrude from the surface of the second magnetic member 40.

[0143] Each first projection 30a is composed of a pair of protrusions along the outer circumference of the annular first yoke portion 31. The first projection 30a is a portion of the first magnetic member 30 that has been made to protrude from the corresponding location using a well-known processing method such as plastic deformation. When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, the first projection 30a protrudes toward the second magnetic member 40.

[0144] The surface extending in the direction of projection of each first protrusion 30a is defined as the first side surface 30b. That is, the first side surface 30b is the surface rising from the surface of the first magnetic member 30 and constitutes the side surface of the convex ridge.

[0145] Each second projection 40a is composed of a single protrusion along the outer circumference of the annular second yoke portion 41. The second projection 40a is a portion of the second magnetic member 40 that has been made to protrude from the corresponding location using a well-known processing method such as plastic deformation. When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, the second projection 40a protrudes toward the first magnetic member 30.

[0146] The surface extending in the direction of projection of each second protrusion 40a is defined as the second side surface 40b. That is, the second side surface 40b is the surface rising from the surface of the second magnetic member 40 and constitutes the side surface of the convex ridge.

[0147] Figure 12 is a schematic diagram showing the first magnetic member 30 in Figure 11. Figure 13 is a schematic diagram showing the second magnetic member 40 in Figure 11. Figure 12 shows the surface of the first magnetic member 30 facing the second magnetic member 40. Figure 13 shows the surface of the second magnetic member 40 facing the first magnetic member 30.

[0148] As shown in Figure 12, in the first magnetic member 30, a pair of protrusions are formed on each first body portion 33 as the first protrusion 30a. On the other hand, as shown in Figure 13, in the second magnetic member 40, a single protrusion is formed on each second body portion 43 as the second protrusion 40a.

[0149] Returning to Figure 11, the explanation continues. The first magnetic member 30 and the second magnetic member 40 are positioned opposite each other such that one protrusion constituting the corresponding second protrusion 40a fits between a pair of protrusions constituting each first protrusion 30a. In this position, the tip of each first protrusion 30a is in contact with the second magnetic member 40, and the tip of each second protrusion 40a is in contact with the first magnetic member 30.

[0150] Furthermore, the first side surface 30b of each convex ridge constituting each first projection 30a and the second side surface 40b of the convex ridge constituting the corresponding second projection 40a are in contact with each other and face each other.

[0151] As a result, each first protrusion 30a and the corresponding second protrusion 40a are facing each other and interlocking. The first protrusions 30a and second protrusions 40a constituting each support portion 70 are interlocking with each other, and the first magnetic member 30 and the second magnetic member 40 are positioned facing each other. That is, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0152] In other words, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by the arrangement of the first magnetic member 30, the second magnetic member 40, and each support portion 70 in the desired positions. The other configurations of the stator structure 1 according to Embodiment 4 are the same as those of the stator structure 1 according to Embodiment 3, so their description is omitted.

[0153] Next, the method for manufacturing the stator structure 1 in Embodiment 4 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 4 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0154] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x for the manufacture of the stator structure 1. The first magnetic member 30 prepared in the preparation step is prepared with a first protrusion 30a that protrudes from the surface of the first magnetic member 30 already formed thereon. The second magnetic member 40 prepared in the preparation step is prepared with a second protrusion 40a that protrudes from the surface of the second magnetic member 40 already formed thereon.

[0155] Specifically, each first projection 30a is prepared by forming a pair of convex ridges. Each second projection 40a is prepared by forming a single convex ridge.

[0156] <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At that time, the first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that each first protrusion 30a and the corresponding second protrusion 40a are in contact with each other.

[0157] At this time, the first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that a single convex shape constituting the corresponding second protrusion 40a fits between a pair of convex ridges constituting each first protrusion 30a. Each first protrusion 30a and the corresponding second protrusion 40a are engaged with each other, and the first magnetic member 30 and the second magnetic member 40 are positioned facing each other. That is, in the positioning step, at least the first magnetic member 30 and the second magnetic member 40 are connected via their respective support parts 70.

[0158] The first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, thereby determining their relative positional relationship with the first tip 34 and the second tip 44. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, in this assembled state, into a mold (not shown).

[0159] Regarding the method for manufacturing the stator structure 1 according to Embodiment 4 described above, the other components are the same as those for manufacturing the stator structure 1 according to Embodiment 3, so their description will be omitted.

[0160] In Embodiment 4, the first protrusion 30a is a pair of protrusions, and the second protrusion 40a is a single protrusion. However, it is not limited to this. For example, the first protrusion 30a may be a single protrusion, and the second protrusion 40a may be a single protrusion, with the protrusions interlocking with each other. Alternatively, the first protrusion 30a may be multiple protrusions, and the second protrusion 40a may be multiple protrusions, with the protrusions interlocking with each other. In other words, it is sufficient that at least one protrusion is formed on each of the first protrusion 30a and the second protrusion 40a, and that these protrusions interlock with each other.

[0161] Furthermore, the pair of protrusions as the first projection 30a and the single protrusion as the second projection 40a in Embodiment 4 are protrusions shaped to follow the outer circumference of the annular first yoke portion 31 or the second yoke portion 41. However, it is not limited to this. The shape of the protrusions and the direction in which they extend can be selected as appropriate. For example, the protrusions may be wavy or straight. At a minimum, the protrusions as the first projection 30a and the protrusion as the second projection 40a, which face each other, must be in a shape that interlocks. Moreover, they do not have to be protrusions. For example, the first projection 30a and the second projection 40a may be interlocking protrusions. In this case as well, the first side surface 30b, which is the side surface of the protrusion that is the first projection 30a, and the second side surface 40b, which is the side surface of the protrusion that is the second projection 40a, are in contact with each other and interlock.

[0162] Each support portion 70 of the stator structure 1 according to Embodiment 4 consists of a first protrusion 30a formed on the first magnetic member 30 and projecting toward the second magnetic member 40, and a second protrusion 40a formed on the second magnetic member 40 and projecting toward the first magnetic member 30. Furthermore, each first protrusion 30a and its corresponding second protrusion 40a are opposite each other and interlock. This makes it possible to further prevent misalignment between the first protrusion 30a and the second magnetic member 40 in the direction along the surface of the first protrusion 30a.

[0163] In the stator structure 1 according to Embodiment 4, the first side surface 30b of each first protrusion 30a, which is the side surface rising from the surface of the first magnetic member 30, and the second side surface 40b of the corresponding second protrusion 40a, which is the side surface rising from the surface of the second magnetic member 40, are in contact with and interlock with each other. This makes it possible to further prevent misalignment between the first protrusion 30a and the second magnetic member 40 in the direction along the surface of the first protrusion 30a.

[0164] Each first protrusion 30a of the stator structure 1 according to Embodiment 4 is one or more convex ridges having a first side surface 30b as its side surface, and each second protrusion 40a is one or more convex ridges having a second side surface 40b as its side surface. Furthermore, each convex ridge which is a first protrusion 30a and the corresponding convex ridge which is a second protrusion 40a are interlocked with each other. This makes it possible to further prevent misalignment between the first protrusion 30a and the second magnetic member 40 in the direction along the surface of the first protrusion 30a.

[0165] In the manufacturing method of the stator structure 1 according to Embodiment 4, in the arrangement step S02, each first protrusion 30a and the corresponding second protrusion 40a are positioned facing each other and interlocked, thereby arranging the first magnetic member and the second magnetic member. This makes it possible to manufacture the stator structure 1 while further preventing misalignment between the first protrusion 30a and the second magnetic member 40 in the direction along the surface of the first protrusion 30a.

[0166] In the manufacturing method of the stator structure 1 according to Embodiment 4, in preparation step S01, each first protrusion 30a having a first side surface 30b which is a side surface rising from the surface of the first magnetic member 30 is prepared. Also in preparation step S01, each second protrusion 40a having a second side surface 40b which is a side surface rising from the surface of the second magnetic member 40 is prepared. Furthermore, in arrangement step S02, each first side surface 30b and the corresponding second side surface 40b are positioned opposite each other and interlocked. This makes it possible to manufacture the stator structure 1 while further preventing misalignment between the first protrusion 30a and the second magnetic member 40 in the direction along the surface of the first protrusion 30a.

[0167] In the manufacturing method of the stator structure 1 according to Embodiment 4, each first protrusion 30a prepared in preparation step S01 is one or more convex ridges having a first side surface 30b as its side surface. Also, each second protrusion 40a prepared in preparation step S01 is one or more convex ridges having a second side surface 40b as its side surface. This makes it possible to manufacture the stator structure 1 while further preventing misalignment between the first protrusion 30a and the second magnetic member 40 in the direction along the surface of the first protrusion 30a.

[0168] Embodiment 5. The stator structure 1 in Embodiment 5 differs from the stator structure 1 in Embodiment 2 in that each support portion 70 is composed of a first protruding portion 30a formed by bending a portion that extends continuously from the first magnetic member 30. Figure 14 is a schematic diagram showing the magnetic teeth portion 22 according to Embodiment 5. Figure 15 is a cross-sectional view showing the cross-section along the line XV-XV in Figure 14.

[0169] Each support portion 70 is positioned on the corresponding magnetic tooth portion 22. Each support portion 70 is a first projection 30a, which is a portion formed by protruding from the surface of the first magnetic member 30 that constitutes one magnetic tooth portion 22.

[0170] Each first protrusion 30a is a portion that extends continuously from the first magnetic member 30, and each first protrusion 30a is a portion that is bent and made to protrude from the portion surrounded by each first cut portion 30c.

[0171] Each first body portion 33 of the first magnetic member 30 has a first cut portion 30c formed therein. The first cut portion 30c is a C-shaped notch. That is, the portion enclosed by the first cut portion 30c is connected to the first magnetic member 30 and is not completely separated. Each first protrusion 30a has a portion enclosed by the first cut portion 30c bent along a direction perpendicular to the surface of the first magnetic member 30.

[0172] Furthermore, the shape of the first cut portion 30c is not limited to a C-shape. As long as the portion enclosed by the first cut portion 30c is connected to the first magnetic member 30, and the portion enclosed by the first cut portion 30c can be sufficiently bent along a direction perpendicular to the surface of the first magnetic member 30, the shape of the first cut portion 30c is not particularly limited.

[0173] Figure 16 is a schematic diagram showing the first tooth portion 32 of Figure 14. Figure 17 is a schematic diagram showing the second tooth portion 42 of Figure 14. Figure 16 shows the surface of the first magnetic member 30 facing the second magnetic member 40. Figure 17 shows the surface of the second magnetic member 40 facing the first magnetic member 30.

[0174] As shown in Figure 16, in the first magnetic member 30, the portion surrounded by the first cut portion 30c is bent to form the first protrusion 30a. On the other hand, as shown in Figure 17, in the second magnetic member 40, no configuration related to the support portion 70 is formed.

[0175] Returning to Figures 14 and 15, we will continue the explanation. The first magnetic member 30 and the second magnetic member 40 are positioned opposite each other, with each support portion 70, which is a first projection 30a, protruding toward the second magnetic member 40, and the tip of each first projection 30a contacting the corresponding surface of the second magnetic member 40. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0176] Each support portion 70 is in contact with the corresponding surface of the second magnetic member 40 and is positioned between the first magnetic member 30 and the second magnetic member 40, thereby determining the relative positional relationship between the first magnetic member 30 and the second magnetic member 40.

[0177] The other components of the stator structure 1 according to Embodiment 5 are the same as those of the stator structure 1 according to Embodiment 2, so their description will be omitted.

[0178] Next, the method for manufacturing the stator structure 1 in Embodiment 5 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 5 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0179] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. A first cut portion 30c is formed in each first body portion 33 of the prepared first magnetic member 30. The portion surrounded by each first cut portion 30c is bent and made to protrude, so that 14 first protrusions 30a are already formed on the first magnetic member 30. Each first protrusion 30a is bent along a direction perpendicular to the surface of the first magnetic member 30. At this time, each of the 14 first protrusions 30a is a support part 70. <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At that time, the worker positions the first magnetic member 30 and the second magnetic member 40 such that the protruding tips of each first protruding portion 30a, which are each support portion 70, are in contact with the second magnetic member 40. In other words, in the positioning step, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0180] When the first magnetic member 30, the second magnetic member 40, and each support portion 70 are positioned in the desired location, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined.

[0181] The worker places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are arranged in this manner, into a mold (not shown).

[0182] Regarding the method for manufacturing the stator structure 1 according to Embodiment 5 described above, the other components are the same as those for manufacturing the stator structure 1 according to Embodiment 2, so their description will be omitted.

[0183] In the stator structure 1 according to Embodiment 5, the first magnetic member 30 has at least one first cut portion 30c formed thereon, and each first protrusion 30a is surrounded by the corresponding first cut portion 30c and extends continuously from the first magnetic member 30. Furthermore, each first protrusion 30a is bent and protrudes toward the second magnetic member 40. As a result, the support portion 70 can be prepared by processing only a part of the metal plate used for the first magnetic member 30. Therefore, the first magnetic member 30 and each support portion 70 can be prepared using a well-known processing method for metal plates. Thus, the manufacturing cost of the stator structure 1 is not significantly increased.

[0184] In the manufacturing method of the stator structure 1 according to Embodiment 5, each support portion 70 is arranged on the first magnetic member 30 prepared in preparation step S01. Each support portion 70 prepared in preparation step S01 is a first protrusion 30a that extends from the first magnetic member 30 and is bent along a direction perpendicular to the surface of the first magnetic member 30. Each first protrusion 30a is a portion that is bent and protrudes from the portion surrounded by the first cut portion 30c formed on the first magnetic member 30. In arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other so that each support portion 70 is in contact with the second magnetic member 40. As a result, since each support portion 70 is arranged on the first magnetic member 30, in arrangement step S02, by paying attention only to the arrangement of the first magnetic member 30 and the second magnetic member 40, each support portion 70 can be arranged in the designed position between the first magnetic member 30 and the second magnetic member 40. Therefore, the stator structure 1 can be manufactured by simplifying the arrangement step. Furthermore, this allows the support portion 70 to be prepared by processing only a part of the metal plate used in the first magnetic member 30. Therefore, the first magnetic member 30 and each support portion 70 can be prepared using well-known metal plate processing methods. Thus, the manufacturing cost of the stator structure 1 will not be significantly increased.

[0185] Modification 1 of Embodiment 5. The stator structure 1 according to the modification 1 of Embodiment 5 differs from the stator structure 1 in Embodiment 5 in that at least one support portion 70 is composed of a first protrusion 30a, and at least one support portion 70 is composed of a second protrusion 40a formed on the second magnetic member 40. Figure 18 is a cross-sectional view showing the magnetic teeth portion 22 according to the modification 1 of Embodiment 5. Figure 18 shows a cross-section of the magnetic member 20 of Embodiment 5 along the line corresponding to the XV-XV line in Figure 14.

[0186] At least one of the support portions 70 is a first projection 30a formed on the first magnetic member 30, and at least one of the support portions 70 is a second projection 40a formed on the second magnetic member 40.

[0187] As shown in Figure 18, a second cut portion 40c is formed in at least one second body portion 43 of the second magnetic member 40, and the portion surrounded by each second cut portion 40c is bent and made to protrude to form a second protrusion 40a. That is, each second protrusion 40a is a portion that extends continuously from the second magnetic member 40, and is a portion that is bent and made to protrude from the portion surrounded by each second cut portion 40c. In this case, each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40.

[0188] The first magnetic member 30 and the second magnetic member 40 are arranged facing each other such that one or more of the support portions 70, which are first protrusions 30a, protrude toward the second magnetic member 40, and one or more of the support portions 70, which are second protrusions 40a, protrude toward the first magnetic member 30.

[0189] When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, the tip of each first projection 30a contacts the corresponding surface of the second magnetic member 40, and the tip of each second projection 40a contacts the corresponding surface of the first magnetic member 30. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via their respective support portions 70.

[0190] With the first magnetic member 30, the second magnetic member 40, and each support part 70 positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined.

[0191] The arrangement of the first protrusion 30a and the second protrusion 40a can be selected as appropriate. For example, the same magnetic body 23 may be provided with a support portion 70 which is the first protrusion 30a and a support portion 70 which is the second protrusion 40a. For example, each magnetic body 23 may be alternately provided with a support portion 70 which is the first protrusion 30a and a support portion 70 which is the second protrusion 40a. The other configurations of the stator structure 1 in the modified example 1 of Embodiment 5 are the same as those of the stator structure 1 in Embodiment 5, so their description is omitted.

[0192] Next, a method for manufacturing the stator structure 1, in which the support portion 70 comprises at least one first protrusion 30a and at least one second protrusion 40a, will be described. In the preparation step, at least two or more support portions 70 are prepared. At least one support portion 70 is prepared by being formed on the first magnetic member 30 as a first protrusion 30a. In addition, at least one other support portion 70 is prepared by being formed on the second magnetic member 40 as a second protrusion 40a.

[0193] In the preparation step, the second magnetic member 40 and the support portions 70, which are each second protrusion 40a, are prepared in the same way as the first magnetic member 30 and the support portions 70, which are each first protrusion 30a. That is, in the preparation step, a second cut portion 40c is formed on each second body portion 43 of the second magnetic member 40 that is prepared. Furthermore, the portion surrounded by the second cut portion 40c is bent and made to protrude, so that the second protrusion 40a is already formed. Each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40.

[0194] In the placement process, the worker places the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tip of each first protrusion 30a, which is each support part 70, is positioned to be in contact with the second magnetic member 40, and the protruding tip of each second protrusion 40a, which is each support part 70, is positioned to be in contact with the first magnetic member 30. In other words, in the placement process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support part 70.

[0195] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0196] Other components of the manufacturing method for the stator structure 1 in the modified example 1 of Embodiment 5 are the same as those of the manufacturing method for the stator structure 1 in Embodiment 5, so their description is omitted.

[0197] In the stator structure 1 according to the modified example 1 of Embodiment 5, the first magnetic member 30 has at least one first cut portion 30c formed thereon, and each first projection 30a is surrounded by the corresponding first cut portion 30c and extends continuously from the first magnetic member 30. Furthermore, each first projection 30a is bent and protrudes toward the second magnetic member 40. Similarly, the second magnetic member 40 has at least one second cut portion 40c formed thereon, and each second projection 40a is surrounded by the corresponding second cut portion 40c and extends continuously from the second magnetic member 40. Furthermore, each second projection 40a is bent and protrudes toward the first magnetic member 30. This allows each support portion 70 to be arranged on both the first magnetic member 30 and the second magnetic member 40. Consequently, the degree of freedom in designing the magnetic path and strength for the first magnetic member 30 and the second magnetic member 40 can be further improved. Furthermore, this allows the first magnetic member 30 and the second magnetic member 40 to be formed from a metal sheet without changing their external shape. Therefore, the first magnetic member 30 and the second magnetic member 40 can be formed in the metal sheet processing without changing the die or other components. In addition, this allows for the addition of bent portions to the first magnetic member 30 and the second magnetic member 40. Consequently, the mechanical strength of the first magnetic member 30 and the second magnetic member 40 can be improved.

[0198] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 5, two or more support parts 70 are prepared in the preparation step S01. At least one of the support parts 70 prepared in the preparation step S01 is a second protrusion 40a that extends from the second magnetic member 40 and is bent along a direction perpendicular to the surface of the second magnetic member 40. Each second protrusion 40a is a portion that is bent and protrudes from the portion surrounded by the second cut portion 40c formed on the second magnetic member 40. In the arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other so that each second protrusion 40a is in contact with the first magnetic member 30. This allows each support part 70 to be arranged on the first magnetic member 30 and the second magnetic member 40, respectively. Therefore, it is possible to provide a manufacturing method of the stator structure 1 that can further improve the degree of freedom in designing the magnetic path and strength for the first magnetic member 30 and the second magnetic member 40. Furthermore, this allows the first magnetic member 30 and the second magnetic member 40 to be formed from a metal sheet without changing their external shape. Therefore, the first magnetic member 30 and the second magnetic member 40 can be manufactured without changing the die or other components during the metal sheet processing. In addition, this allows for the addition of bent portions to the first magnetic member 30 and the second magnetic member 40. Therefore, it is possible to manufacture the first magnetic member 30 and the second magnetic member 40 with improved mechanical strength.

[0199] Embodiment 6. The stator structure 1 in Embodiment 6 differs from the stator structure 1 in Embodiment 3 in that each support portion 70 is composed of a first protruding portion 30a formed by bending the portion surrounded by the first cut portion 30c, and a second protruding portion 40a formed by bending the portion surrounded by the corresponding second cut portion 40c.

[0200] Figure 19 is a cross-sectional view showing the magnetic teeth portion 22 according to Embodiment 6. Figure 19 shows a cross-section of the magnetic member 20 of Embodiment 5 along the line corresponding to the XV-XV line in Figure 14.

[0201] Each support portion 70 is positioned on each magnetic tooth portion 22. Specifically, each support portion 70 is positioned between the first body portion 33 of each first tooth portion 32 and the second body portion 43 of the corresponding second tooth portion 42.

[0202] Each support portion 70 is composed of a first protrusion 30a, which is a portion formed to protrude from the surface of the first magnetic member 30, and a second protrusion 40a, which is a portion formed to protrude from the surface of the corresponding second magnetic member 40.

[0203] Each first protrusion 30a is a portion that extends continuously from the first magnetic member 30, and the portion surrounded by each first cut portion 30c is a portion that has been bent and made to protrude.

[0204] Each first cut portion 30c is a C-shaped notch formed in each first body portion 33 of the first magnetic member 30. That is, the portion enclosed by the first cut portion 30c is connected to the first magnetic member 30 and is not completely separated. The portion enclosed by such first cut portions 30c is bent along a direction perpendicular to the surface of the first magnetic member 30 to form each first cut portion 30c.

[0205] Similar to each first protrusion 30a, each second protrusion 40a is a portion that extends continuously from the second magnetic member 40, and each second protrusion 40a is a portion that is bent and made to protrude from the portion surrounded by each second cut portion 40c.

[0206] Each second cut portion 40c is a C-shaped notch formed in each second body portion 43 of the second magnetic member 40. That is, the portion enclosed by the second cut portion 40c is connected to the second magnetic member 40 and is not completely separated. The portion enclosed by such second cut portions 40c is bent along a direction perpendicular to the surface of the second magnetic member 40 to form each second cut portion 40c.

[0207] The shapes of the first cut portion 30c and the second cut portion 40c are not particularly limited, and it is sufficient if a part of them is connected to the first magnetic member 30 or the second magnetic member 40.

[0208] When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, the first protrusion 30a protrudes toward the second magnetic member 40, and the second protrusion 40a protrudes toward the first magnetic member 30.

[0209] Furthermore, when the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the tip of each first protrusion 30a is in contact with the tip of the corresponding second protrusion 40a. One support portion 70 is formed by one first protrusion 30a and its corresponding second protrusion 40a. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0210] As a result, when the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the non-magnetic member 50 is positioned between the first magnetic member 30 and the second magnetic member 40. The tip of each first protrusion 30a and the corresponding tip of the second protrusion 40a are in contact and are positioned between the first magnetic member 30 and the second magnetic member 40 as support parts 70, thereby determining the relative positional relationship between the first magnetic member 30 and the second magnetic member 40.

[0211] The other components of the stator structure 1 according to Embodiment 6 are the same as those of the stator structure 1 according to Embodiment 3, so their description will be omitted.

[0212] Next, the method for manufacturing the stator structure 1 in Embodiment 6 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 6 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0213] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x for the manufacture of the stator structure 1. The first magnetic member 30 prepared in the preparation step has a first protrusion 30a that protrudes from the surface of the first magnetic member 30 pre-formed thereon. The second magnetic member 40 prepared in the preparation step has a second protrusion 40a that protrudes from the surface of the second magnetic member 40 pre-formed thereon.

[0214] Each first protrusion 30a is a portion that extends continuously from the first magnetic member 30, and the portion enclosed by each first cut portion 30c is bent and protruded. Each second protrusion 40a is a portion that extends continuously from the second magnetic member 40, and the portion enclosed by each second cut portion 40c is bent and protruded.

[0215] <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. In doing so, the first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that each first protrusion 30a and the corresponding second protrusion 40a are in contact with each other. When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the tip of each first protrusion 30a and the tip of the corresponding second protrusion 40a are in contact with each other.

[0216] As a result, each support portion 70 is positioned between the first magnetic member 30 and the second magnetic member 40. That is, in the positioning step, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0217] In this way, by arranging the first magnetic member 30, the second magnetic member 40, and each support part 70 in the desired positions, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are arranged in this manner, into a mold (not shown).

[0218] Regarding the manufacturing method of the stator structure 1 according to Embodiment 6 described above, the other components are the same as those of the manufacturing method of the stator structure 1 according to Embodiment 3, so their description will be omitted.

[0219] In the stator structure 1 according to Embodiment 6, the first magnetic member 30 has at least one first cut portion 30c formed thereon, and each first protrusion 30a is surrounded by the corresponding first cut portion 30c and extends continuously from the first magnetic member 30. Furthermore, each first protrusion 30a is bent and protrudes toward the second magnetic member 40. Similarly, the second magnetic member 40 has at least one second cut portion 40c formed thereon, and each second protrusion 40a is surrounded by the corresponding second cut portion 40c and extends continuously from the second magnetic member 40. Furthermore, each second protrusion 40a is bent and protrudes toward the first magnetic member 30. This makes the first cut portions 30c and the second cut portions 40c smaller. Consequently, the reduction in the mechanical strength of the first magnetic member 30 and the second magnetic member 40 can be reduced. In addition, this makes it possible to reduce the size of the first protrusions 30a and the second protrusions 40a, and thus reduces the amount of deformation in the first magnetic member 30 and the second magnetic member 40. Therefore, a support portion 70 can be formed that has little influence on the magnetic paths formed in the first magnetic member 30 and the second magnetic member 40. Thus, the detection accuracy is not significantly affected.

[0220] In the manufacturing method of the stator structure 1 according to Embodiment 6, each first protrusion 30a prepared in preparation step S01 is a portion that is bent and protruded from the portion surrounded by the first cut portion 30c formed on the first magnetic member 30. Similarly, each second protrusion 40a is a portion that is bent and protruded from the portion surrounded by the second cut portion 40c formed on the second magnetic member 40. This makes the first cut portion 30c and the second cut portion 40c smaller. Therefore, a stator structure 1 can be manufactured in which the reduction in the mechanical strength of the first magnetic member 30 and the second magnetic member 40 is reduced. Furthermore, this makes it possible to reduce the size of each of the first protrusions 30a and the second protrusions 40a, thereby reducing the amount of deformation of the first magnetic member 30 and the second magnetic member 40. Therefore, a support portion 70 that has little influence on the magnetic path formed on the first magnetic member 30 and the second magnetic member 40 can be formed, and a stator structure 1 that can prevent a decrease in detection accuracy can be manufactured.

[0221] Embodiment 7. The stator structure 1 in Embodiment 7 differs from the stator structure 1 in Embodiment 5 in that each support portion 70 is arranged along the edges of a pair of magnetic body portions 23. Figure 20 is a schematic diagram showing the magnetic member 20 according to Embodiment 7. Figure 21 is a schematic diagram of Figure 20 in the XXI-XXI field of view.

[0222] Each support portion 70 is positioned along each of the pair of edges of each magnetic body portion 23. The pair of edges of each magnetic body portion 23 on which each support portion 70 is positioned are a pair of magnetic body edges 23a. In other words, two support portions 70 are positioned on one magnetic body portion 23.

[0223] Of the two support portions 70 located on one magnetic body portion 23, one support portion 70 is the first protrusion 30a, and the other support portion 70 is the second protrusion 40a.

[0224] Figure 22 is a schematic diagram showing the first magnetic member 30 in Figure 20. Figure 23 is a schematic diagram showing the state before the formation of the first protrusion 30a in Figure 22. Figure 22 shows the surface of the first magnetic member 30 facing the second magnetic member 40.

[0225] Each first projection 30a, which is a support portion 70, is positioned along one of the pair of first furring strips 33a of each first tooth portion 32. The first magnetic member 30 and each first projection 30a are formed by bending a metal plate, which has been punched into a desired shape, along the corresponding first furring strips 33a.

[0226] Each first projection 30a is a portion that extends continuously from the first body portion 33 beyond one of the pair of first body edges 33a that each first body portion 33 has, and is a portion that bends and protrudes along the first body edge 33a with the corresponding first body edge 33a as the boundary. Each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30.

[0227] That is, the portion extending continuously from the corresponding first body portion 33 is bent along the first body edge 33a, with the corresponding first body edge 33a as the boundary, to form the first projection 30a.

[0228] Each second projection 40a is the same as each first projection 30a. That is, each second projection 40a is positioned along one of the pair of second furring strips 43a of each second teeth portion 42. The second magnetic member 40 and each second projection 40a are formed by bending a metal plate, which has been punched into a desired shape, along the corresponding second furring strip 43a.

[0229] Each second projection 40a is a portion that extends continuously from the second body portion 43 beyond one of the pair of second body edges 43a that each second body portion 43 has, and is a portion that bends and protrudes along the second body edge 43a with the corresponding second body edge 43a as the boundary. Each second projection 40a is bent in a direction perpendicular to the surface of the second magnetic member 40.

[0230] Returning to Figures 20 and 21, we will continue the explanation. When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, each magnetic body portion 23 is provided with one first projection 30a and one second projection 40a, which serve as a pair of support portions 70. That is, the first teeth portion 32 having the first body portion 33 on which the first projection 30a is located, and the second teeth portion 42 having the second body portion 43 on which each second projection 40a is located, are arranged facing each other.

[0231] In one magnetic body portion 23, the first protrusion 30a and the second protrusion 40a are located on different magnetic body edges 23a. That is, the first body edge 33a on which the first protrusion 30a is located and the second body edge 43a on which the second protrusion 40a is located are not facing each other.

[0232] Each first projection 30a protrudes toward the second magnetic member 40, and the tip of each first projection 30a is in contact with the surface of the second magnetic member 40. Each second projection 40a protrudes toward the first magnetic member 30, and the tip of each second projection 40a is in contact with the surface of the first magnetic member 30. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0233] In this way, the first magnetic member 30, the second magnetic member 40, and each support portion 70 are positioned in the desired locations. Because the first magnetic member 30, the second magnetic member 40, and each support portion 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The other configurations of the stator structure 1 according to Embodiment 7 are the same as those of the stator structure 1 according to Embodiment 5, so their description is omitted.

[0234] Next, the method for manufacturing the stator structure 1 in Embodiment 7 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 7 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4. Furthermore, the procedure for manufacturing the stator structure 1 according to Embodiment 7 will be described in a manner that differs from the procedure for manufacturing the stator structure 1 according to Embodiment 5. The procedure for manufacturing the stator structure 1 according to Embodiment 7 that is the same as the procedure for manufacturing the stator structure 1 according to Embodiment 5 will be omitted from the explanation.

[0235] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 28 support parts 70 for the manufacture of the stator structure 1. The first magnetic member 30 to be prepared has 14 first projections 30a, which are support parts 70, already formed and positioned on the corresponding first furring strip 33a. Similarly, the second magnetic member 40 to be prepared has 14 second projections 40a, which are support parts 70, already formed and positioned on the corresponding second furring strip 43a.

[0236] Specifically, each first projection 30a is a portion that extends continuously from the first body portion 33 beyond one of the pair of first body edges 33a that each first body portion 33 has, and is formed by bending along the first body edge 33a with the corresponding first body edge 33a as the boundary. At this time, each first projection 30a is bent along a direction perpendicular to the surface of the first magnetic member 30.

[0237] Each second projection 40a is a portion that extends continuously from the second body portion 43 beyond one of the pair of second body edges 43a that each second body portion 43 has, and is a portion that is bent along the second body edge 43a with the corresponding second body edge 43a as the boundary. At this time, each second projection 40a is bent in a direction perpendicular to the surface of the second magnetic member 40. <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tip of each first protrusion 30a, which is each support part 70, is positioned to be in contact with the second magnetic member 40, and the protruding tip of each second protrusion 40a is positioned to be in contact with the first magnetic member 30. In other words, in the positioning process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support part 70.

[0238] In this way, by arranging the first magnetic member 30, the second magnetic member 40, and each support part 70 in the desired positions, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are arranged in this manner, into a mold (not shown).

[0239] Regarding the method for manufacturing the stator structure 1 according to Embodiment 7 described above, the other components are the same as those for manufacturing the stator structure 1 according to Embodiment 5, so their description will be omitted.

[0240] In Embodiment 7, the first magnetic member 30 and each first protrusion 30a, and the second magnetic member 40 and each second protrusion 40a are each formed by bending a single metal plate. However, this is not the only way. Each may be formed using other processing methods. For example, the first magnetic member 30 and each first protrusion 30a, and the second magnetic member 40 and each second protrusion 40a may be formed using processing methods such as machining or integral molding by sintering a metal material.

[0241] Furthermore, the 28 support portions 70 in Embodiment 7 are composed of 14 first protrusions 30a and 14 second protrusions 40a. However, the number is not limited to this. There only needs to be at least one support portion 70. For example, one support portion 70 may consist of only one first protrusion 30a. Alternatively, multiple support portions 70 may be composed of only multiple first protrusions 30a. In other words, it is not necessary to provide second protrusions 40a as support portions 70. Also, for example, one first protrusion 30a may be provided on each of a pair of first purlins 33a of one first body portion 33.

[0242] Furthermore, in Embodiment 7, the opposing first body portion 33 and second body portion 43 are provided with one first projection 30a on the first body portion 33 and one second projection 40a on the second body portion 43. However, this is not the only possible configuration. The opposing first body portion 33 and second body portion 43 do not necessarily have to have one first projection 30a and one second projection 40a. For example, in one pair of opposing first body portion 33 and second body portion 43, only the first projection 30a may be provided on the first body portion 33, and the corresponding second body portion 43 may not have a second projection 40a. In other pairs of opposing first body portion 33 and second body portion 43, only the second projection 40a may be provided on the second body portion 43, and the corresponding first body portion 33 may not have a first projection 30a. Furthermore, in a case where there is one opposing first body section 33 and second body section 43, the second protrusion 40a may not be placed on the second body section 43, and only the two first protrusions 30a may be placed on the first body section 33. Moreover, the support section 70, which is the second protrusion 40a, may not be placed at all. In this way, the first protrusion 30a and the second protrusion 40a can be installed as appropriate.

[0243] Furthermore, the 28 support portions 70 in Embodiment 7 are arranged on either the first furring strip 33a or the second furring strip 43a. However, this is not the only arrangement. The support portions 70 may be arranged anywhere on the outer edges of the first magnetic member 30 and the second magnetic member 40. For example, the support portions 70, which are the first protrusions 30a, may be arranged on a part, multiple parts, or all of the outer edge of the first yoke portion 31. By adopting such a configuration, the strength of the magnetic member 20, which is a single plate, can be effectively improved.

[0244] In the stator structure 1 according to Embodiment 7, each support portion 70 is a first projection 30a, which is a portion formed on at least the first magnetic member 30 and protruding toward the second magnetic member 40. The tip of each first projection 30a, which is each support portion 70, is in contact with the second magnetic member 40. Furthermore, each first projection 30a is a portion that curves and extends along the corresponding edge of the first magnetic member 30. As a result, the support portion 70 can be prepared by only deforming a part of the metal plate used for the first magnetic member 30. Therefore, each support portion 70, which is each first projection 30a, can be prepared using a well-known processing method for the metal plate. Thus, the manufacturing cost of the stator structure 1 is not significantly increased. In addition, this improves the mechanical strength of the first magnetic member 30 and prevents deformation. As a result, a stator structure 1 with the designed detection accuracy can be obtained.

[0245] In the stator structure 1 according to Embodiment 7, the first magnetic member 30 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. Each first body portion 33 also has a pair of opposing first body edges 33a. Each first projection 30a is a portion that is curved along the corresponding first body edge 33a. This improves the mechanical strength of the first body portion 33 and prevents deformation, and also prevents deformation of the second body portion 43 to which the first projection 30a is connected. Therefore, it is possible to obtain first teeth portions 32 and second teeth portions 42 with the designed shape, and to obtain a stator structure 1 with the designed detection accuracy.

[0246] In the stator structure 1 according to Embodiment 7, at least two first protrusions 30a are bent along each of a pair of first rib edges 33a of one first body portion 33. This improves the mechanical strength of the first body portion 33 and prevents deformation, and also prevents deformation of the second body portion 43 to which the first protrusions 30a are connected. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0247] In the stator structure 1 according to Embodiment 7, it includes two or more support portions 70. At least one support portion 70 is a first protruding portion 30a formed on the first magnetic member 30 and protruding toward the second magnetic member 40. Also, the tip of each first protruding portion 30a which is each support portion 70 is in contact with the second magnetic member 40. Further, at least one support portion 70 is a second protruding portion 40a formed on the second magnetic member 40 and protruding toward the first magnetic member 30. Also, the tip of each second protruding portion 40a which is each support portion 70 is in contact with the first magnetic member 30. Each first protruding portion 30a is a portion extending from the first magnetic member 30 and bent along the edge of the corresponding first magnetic member 30. Each second protruding portion 40a is a portion extending from the second magnetic member 40 and bent along the edge of the corresponding second magnetic member 40. Thus, the support portion 70 can be prepared only by deforming a part of the metal plate used for the first magnetic member 30 and the second magnetic member 40. Therefore, each support portion 70 which is each first protruding portion 30a and each second protruding portion 40a can be prepared by a well-known processing method for the metal plate. Thus, the manufacturing cost of the stator structure 1 is not significantly increased. Also, thereby, each support portion 70 can be arranged on each of the first magnetic member 30 and the second magnetic member 40. Therefore, the degrees of freedom in the design of the magnetic circuit and the strength design for the first magnetic member 30 and the second magnetic member 40 can be further improved. Also, thereby, the mechanical strength of each of the first magnetic member 30 and the second magnetic member 40 is improved and deformation can be prevented. Therefore, the stator structure 1 having the designed detection accuracy can be obtained.

[0248] In the stator structure 1 according to Embodiment 7, the first magnetic member 30 has a first yoke portion 31 that is annular or a part of an annular shape, and a plurality of first teeth portions 32 that extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 that continues from the first yoke portion 31 and a first tip portion 34 that continues from the first body portion 33. Each first body portion 33 has a pair of opposing first body edges 33a. The second magnetic member 40 has a second yoke portion 41 that is annular or a part of an annular shape, and a plurality of second teeth portions 42 that extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 that continues from the second yoke portion 41 and a second tip portion 44 that continues from the second body portion 43. Each second body portion 43 has a pair of opposing second body edges 43a. Each first protrusion 30a is a portion that curves along the corresponding first body edge 33a, and each second protrusion 40a is a portion that curves along the corresponding second body edge 43a. Thereby, the mechanical strength of each of the first body portion 33 and the second body portion 43 is improved, and deformation can be prevented. Therefore, the first teeth portion 32 and the second teeth portion 42 having the designed shape can be obtained, and the stator structure 1 having the designed detection accuracy can be obtained.

[0249] In the stator structure 1 according to Embodiment 7, the first body portion 33 where the first protrusion 30a is disposed and the second body portion 43 where the second protrusion 40a is disposed are disposed opposite to each other. The first body edge 33a along which the first protrusion 30a curves and the second body edge 43a along which the second protrusion 40a curves do not face each other. Thereby, the mechanical strength of each of the first body portion 33 and the second body portion 43 that face each other is improved, and deformation can be prevented. Therefore, the shapes of the opposing first teeth portion 32 and second teeth portion 42, that is, the shape of the magnetic teeth portion 22, become the designed ones, and the stator structure 1 having the designed detection accuracy can be obtained.

[0250] In the manufacturing method of the stator structure 1 according to Embodiment 7, each support portion 70 is arranged on the first magnetic member 30 prepared in preparation step S01. Each support portion 70 prepared in preparation step S01 is a first projection 30a that extends from the first magnetic member 30 and curves along a direction perpendicular to the surface of the first magnetic member 30. The boundary between the first magnetic member 30 and each first projection 30a is the edge of the first magnetic member 30. In arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other so that each support portion 70 is in contact with the second magnetic member 40. As a result, since each support portion 70 is arranged on the first magnetic member 30, in arrangement step S02, by paying attention only to the arrangement of the first magnetic member 30 and the second magnetic member 40, each support portion 70 can be arranged in the designed position between the first magnetic member 30 and the second magnetic member 40. Therefore, the stator structure 1 can be manufactured by simplifying the arrangement step. Furthermore, this allows the support portion 70 to be prepared by processing only a portion of the metal plate used in the first magnetic member 30. Therefore, the first magnetic member 30 and each support portion 70 can be prepared using well-known metal plate processing methods. Thus, the manufacturing cost of the stator structure 1 is not significantly increased. In addition, this improves the mechanical strength of the first magnetic member 30 and prevents deformation. Therefore, the stator structure 1 with the designed detection accuracy can be manufactured.

[0251] In the manufacturing method of the stator structure 1 according to Embodiment 7, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which protrude toward the center from the first yoke portion 31. Each first teeth portion 32 has a first body portion 33 extending from the first yoke portion 31 and a first tip portion 34 extending from the first body portion 33. Each first body portion 33 also has a pair of opposing first body edges 33a. The boundary between each first protrusion 30a and the first magnetic member 30 is at least one of the pair of first body edges 33a. This improves the mechanical strength of the first body portion 33 and prevents deformation, and also prevents deformation of the second body portion 43 to which the first protrusion 30a is connected. Therefore, it is possible to obtain first teeth portions 32 and second teeth portions 42 with the designed shape, and to manufacture a stator structure 1 with the designed detection accuracy.

[0252] In the manufacturing method of the stator structure 1 according to Embodiment 7, two or more support parts 70 are prepared in preparation step S01. At least two of the support parts 70 prepared in preparation step S01 are prepared as a pair of first protrusions 30a that are bent along each of a pair of first rib edges 33a of one first body part 33. This improves the mechanical strength of the first body part 33 and prevents deformation more effectively, and also prevents deformation of the second body part 43 to which the first protrusions 30a are connected. Therefore, the first teeth part 32 and the second teeth part 42 of the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be manufactured.

[0253] In the manufacturing method of the stator structure 1 according to Embodiment 7, two or more support parts 70 are prepared in preparation step S01. The second magnetic member 40 prepared in preparation step S01 has a second yoke part 41 which is annular or part of an annular shape, and a plurality of second teeth parts 42 which protrude from the second yoke part 41 toward the center. Each second teeth part 42 has a second body part 43 which extends from the second yoke part 41, and a second tip part 44 which extends from the second body part 43. Each second body part 43 has a pair of opposing second ribs 43a. At least one of the support parts 70 prepared in preparation step S01 is a second projection part 40a which extends from the second magnetic member 40 and is bent along a direction perpendicular to the surface of the second magnetic member 40. The boundary between each second projection part 40a and the second magnetic member 40 is at least one of a pair of second ribs 43a. Furthermore, in the arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other such that each second protrusion 40a is in contact with the first magnetic member 30. This improves the mechanical strength of the first body portion 33 and the second body portion 43, and prevents deformation. Consequently, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0254] In the manufacturing method of the stator structure 1 according to Embodiment 7, in the arrangement step S02, the first tooth portion 32 having each first protrusion 30a and the second tooth portion 42 having each second protrusion 40a are arranged facing each other. This improves the mechanical strength of the opposing first body portion 33 and second body portion 43, preventing deformation. Therefore, the shapes of the opposing first tooth portion 32 and second tooth portion 42, i.e., the shape of the magnetic tooth portion 22, are designed, and a stator structure 1 with the designed detection accuracy can be manufactured.

[0255] Embodiment 8. The stator structure 1 in Embodiment 8 differs from the stator structure 1 in Embodiment 7 in that each support portion 70 is composed of a first protrusion 30a and a second protrusion 40a. Figure 24 is a schematic diagram showing the magnetic member 20 according to Embodiment 8. Figure 25 is a schematic diagram viewed from the direction of the arrow XXV-XXV in Figure 24.

[0256] Each support portion 70 is positioned on each of the pair of magnetic body edges 23a, which are the edges of the magnetic body portion 23 of each magnetic tooth portion 22. Each support portion 70 consists of a first projection 30a and a corresponding second projection 40a.

[0257] Figure 26 is a schematic diagram showing the state before the formation of the first protrusion 30a in Figure 25. The explanation will continue with Figure 26 as well. Each first protrusion 30a is a portion that extends continuously from the first body portion 33 beyond the corresponding first body rim 33a from the first magnetic member 30, and is a portion that is bent along the first body rim 33a with the corresponding first body rim 33a as the boundary and made to protrude. Each first protrusion 30a is bent in a direction perpendicular to the surface of the first magnetic member 30.

[0258] Each of the pair of first furring strips 33a of each first tooth portion 32 has a pair of first projections 30a arranged along each of the pair of first furring strips 33a.

[0259] Returning to Figures 24 and 25, we will continue the explanation. The second magnetic member 40 and the second protrusion 40a are the same as the first magnetic member 30 and the first protrusion 30a. Each second protrusion 40a is a portion that extends continuously from the second body 43 beyond the corresponding second bore 43a from the second magnetic member 40, and is a portion that is bent along the second bore 43a with the corresponding second bore 43a as the boundary. Each second protrusion 40a is bent in a direction perpendicular to the surface of the second magnetic member 40.

[0260] Each of the pair of second furring strips 43a of each second tooth portion 42 has a pair of second protrusions 40a arranged along each of the pair of second furring strips 43a.

[0261] When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, a pair of support portions 70 are provided on each magnetic body portion 23. When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, each first projection 30a protrudes toward the second magnetic member 40, and each second projection 40a protrudes toward the first magnetic member 30.

[0262] Furthermore, each first projection 30a and its corresponding second projection 40a are arranged facing each other. The tips of the opposing first projections 30a and the corresponding second projections 40a are in contact with each other.

[0263] Specifically, at least one first body section 33 has two first projections 30a formed and arranged curved along each of a corresponding pair of first body edges 33a. Also, at least one second body section 43 has two second projections 40a formed and arranged curved along each of a corresponding pair of second body edges 43a.

[0264] The first body portion 33 and the second body portion 43 are positioned opposite each other, and each of the two first protrusions 30a and each of the two second protrusions 40a are in contact with each other. Thus, each support portion 70 is formed by each first protrusion 30a and the corresponding second protrusion 40a, and is positioned on the magnetic body portion 23. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0265] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions. The other configurations of the stator structure 1 according to Embodiment 8 are the same as those of the stator structure 1 according to Embodiment 7, so their description is omitted.

[0266] Next, the method for manufacturing the stator structure 1 in Embodiment 8 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 8 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0267] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x for the manufacture of the stator structure 1. The first magnetic member 30 prepared in the preparation step already has 28 first protrusions 30a formed thereon. The first protrusions 30a are formed on each of the pair of first rims 33a of the first body portion 33, which is located on each of the 14 first teeth portions 32 of the first magnetic member 30 to be prepared.

[0268] In addition, the second magnetic member 40 prepared in the preparation step similarly already has 28 second protrusions 40a formed thereon. The second protrusions 40a are formed on each of the pair of second rims 43a of the second body portion 43 that each of the 14 second teeth portions 42 of the prepared second magnetic member 40.

[0269] Specifically, each first projection 30a is a portion that extends continuously from the first body portion 33 beyond each of the pair of first body edges 33a that each first body portion 33 of the first magnetic member 30 has, and is a portion that is bent along the first body edge 33a with the corresponding first body edge 33a as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30. Since each first body portion 33 has a pair of first body edges 33a, a pair of first projections 30a are formed on one first body portion 33.

[0270] Each second protruding portion 40a is a portion that continuously extends from the second barrel portion 43 beyond each of a pair of second barrel edges 43a that the second barrel portions 43 of the second magnetic member 40 have, and is a portion that is bent and protrudes along the corresponding second barrel edge 43a with the corresponding second barrel edge 43a as a boundary. Each second protruding portion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40. Since each second barrel portion 43 has a pair of second barrel edges 43a, a pair of second protruding portions 40a are formed on one second barrel portion 43.

[0271] <Arrangement step> The operator arranges the first magnetic member 30 and the second magnetic member 40 so as to face each other. At that time, the first magnetic member 30 and the second magnetic member 40 are arranged to face each other such that each first protruding portion 30a and the corresponding second protruding portion 40a are in contact with each other. In a state where the first magnetic member 30 and the second magnetic member 40 are arranged to face each other, the tip of each first protruding portion 30a and the tip of the corresponding second protruding portion 40a are in contact with each other. Thereby, each support portion 70 is arranged between the first magnetic member 30 and the second magnetic member 40. That is, in the arrangement step, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0272] In this way, when the first magnetic member 30, the second magnetic member 40, and each support portion 70 are arranged at desired positions, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The operator arranges the first magnetic member 30, the second magnetic member 40, and each support portion 70 arranged in this way into a mold (not shown).

[0273] Regarding the manufacturing method of the stator structure 1 according to the above Embodiment 8, since other configurations are the same as those of the manufacturing method of the stator structure 1 according to Embodiment 7, the description thereof is omitted.

[0274] Note that 28 support portions 70 are provided in Embodiment 8. However, it is not limited to this. At least one or more support portions 70 may be provided.

[0275] Furthermore, in Embodiment 8, the 28 support portions 70 are arranged on the opposing first furring strips 33a and second furring strips 43a, respectively. However, this is not the only arrangement. The support portions 70 may be arranged anywhere on the outer edges of the first magnetic member 30 and the second magnetic member 40. For example, support portions 70, which consist of first protrusions 30a and second protrusions 40a, may be arranged on a portion, multiple portions, or all of the outer edge of the first yoke portion 31. This makes it possible to further improve the strength of the first magnetic member 30 and the second magnetic member 40, which are each made of a single metal plate.

[0276] In the stator structure 1 according to Embodiment 8, each support portion 70 is composed of a first protrusion 30a formed on the first magnetic member 30 and projecting toward the second magnetic member 40, and a second protrusion 40a formed on the second magnetic member 40 and projecting toward the first magnetic member 30. The tip of each first protrusion 30a and the corresponding tip of the second protrusion 40a are in contact with each other. Each first protrusion 30a extends from the first magnetic member 30 and is curved along the edge of the corresponding first magnetic member 30. Each second protrusion 40a extends from the second magnetic member 40 and is curved along the edge of the corresponding second magnetic member 40. As a result, the protrusion heights of the first protrusion 30a and the second protrusion 40a can be made lower compared to the protrusion height of the first protrusion 30a when the support portion 70 is composed of only the first protrusion 30a. Therefore, the amount of deformation of the first magnetic member 30 and the second magnetic member 40 can be reduced. Therefore, a support portion 70 can be formed that has little influence on the magnetic paths formed in the first magnetic member 30 and the second magnetic member 40, and when the stator structure 1 is used as a resolver, the detection accuracy will not be significantly affected. Furthermore, this makes it possible to lower the protrusion heights of the first protrusion 30a and the second protrusion 40a compared to the protrusion height of the first protrusion 30a when the support portion 70 is composed only of the first protrusion 30a. Consequently, when the first magnetic member 30 and the second magnetic member 40 are deformed to form the first protrusion 30a and the second protrusion 40a, the amount of deformation of the first magnetic member 30 and the second magnetic member 40 can be reduced. Therefore, a support portion 70 can be formed that has little influence on the magnetic paths formed in the first magnetic member 30 and the second magnetic member 40, and when the stator structure 1 is used as a resolver, the detection accuracy will not be significantly affected. Furthermore, this improves the mechanical strength of the first magnetic member 30 and the second magnetic member 40 and prevents deformation. Therefore, a stator structure 1 with the designed detection accuracy can be obtained.

[0277] In the stator structure 1 according to Embodiment 8, the first magnetic member 30 has a first yoke portion 31 which is an annular shape or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which is an extension of the first yoke portion 31, and a first tip portion 34 which is an extension of the first body portion 33. Each first body portion 33 also has a pair of opposing first body edges 33a. The second magnetic member 40 has a second yoke portion 41 which is an annular shape or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which is an extension of the second yoke portion 41, and a second tip portion 44 which is an extension of the second body portion 43. Each second body portion 43 also has a pair of opposing second body edges 43a. Furthermore, each first projection 30a is a portion that is bent along the corresponding first purlin 33a. Similarly, each second projection 40a is a portion that is bent along the corresponding second purlin 43a. This improves the mechanical strength of the first body portion 33 and the second body portion 43, and prevents deformation. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0278] In the stator structure 1 according to Embodiment 8, at least two first protrusions 30a are bent along each of a pair of first rims 33a of one first body 33. Also, at least two second protrusions 40a are bent along each of a pair of second rims 43a of one second body 43. Furthermore, each of the two first protrusions 30a and each of the two second protrusions 40a are in contact with each other facing each other. This improves the mechanical strength of the opposing first body 33 and second body 43, preventing deformation. Consequently, the shapes of the opposing first teeth 32 and second teeth 42, i.e., the shape of the magnetic teeth 22, are designed, and a stator structure 1 with the designed detection accuracy can be obtained.

[0279] In the manufacturing method of the stator structure 1 according to Embodiment 8, the boundary between the first magnetic member 30 prepared in preparation step S01 and each first protrusion 30a is the edge of the first magnetic member 30. Similarly, the boundary between the second magnetic member 40 and each second protrusion 40a is the edge of the second magnetic member 40. As a result, the support portion 70 can be prepared by processing only a portion of the metal plate used for the first magnetic member 30 and the second magnetic member 40. Therefore, the first magnetic member 30, the second magnetic member 40, and each support portion 70 can be prepared using a well-known processing method for metal plates. Thus, the manufacturing cost of the stator structure 1 is not significantly increased. Furthermore, this improves the mechanical strength of the first magnetic member 30 and the second magnetic member 40 and prevents deformation. Therefore, a stator structure 1 with the designed detection accuracy can be manufactured.

[0280] In the manufacturing method of the stator structure 1 according to Embodiment 8, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 that is annular or part of an annular shape, and a plurality of first teeth portions 32 that protrude toward the center from the first yoke portion 31. Each first teeth portion 32 has a first body portion 33 that extends from the first yoke portion 31 and a first tip portion 34 that extends from the first body portion 33. Each first body portion 33 also has a pair of opposing first rims 33a. The boundary between each first projection 30a and the first magnetic member 30 is at least one of the pair of first rims 33a. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 that is annular or part of an annular shape, and a plurality of second teeth portions 42 that protrude toward the center from the second yoke portion 41. Furthermore, each second tooth portion 42 has a second body portion 43 extending from the second yoke portion 41 and a second tip portion 44 extending from the second body portion 43. Each second body portion 43 also has a pair of opposing second body edges 43a. The boundary between each second projection 40a and the second magnetic member 40 is at least one of the pair of second body edges 43a. This improves the mechanical strength of the first body portion 33 and the second body portion 43, and prevents deformation. Thus, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0281] In the manufacturing method of the stator structure 1 according to Embodiment 8, in preparation step S01, two or more support parts 70 are prepared. Also in preparation step S01, a pair of first protrusions 30a are prepared, each formed at the boundary of a pair of first rims 33a of at least one first body part 33. Also, a pair of second protrusions 40a are prepared, each formed at the boundary of a pair of second rims 43a of at least one second body part 43. In arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged so that the pair of first protrusions 30a and the pair of second protrusions 40a face each other. This further improves the mechanical strength of the opposing first body part 33 and second body part 43, preventing deformation. Therefore, the opposing first teeth part 32 and second teeth part 42, i.e., the magnetic teeth part 22, can be made to have the shape as designed, and a stator structure 1 with the designed detection accuracy can be manufactured.

[0282] Embodiment 9. The stator structure 1 in Embodiment 9 differs from the stator structure 1 in Embodiment 5 in that each support portion 70 is positioned on the magnetic tip edge 24a of the magnetic tip portion 24. Figure 27 is a schematic diagram showing the stator structure 1 according to Embodiment 9. Figure 28 is a cross-sectional view showing the cross-section along the line XXVIII-XXVIII in Figure 27.

[0283] Each support portion 70 is positioned on the magnetic tip edge 24a of each magnetic tip portion 24. When the rotating body 90 is positioned in the stator structure 1, each magnetic tip edge 24a faces the rotating body 90.

[0284] Figure 29 is a side view of the magnetic teeth portion 22 as seen from the line XXIX-XXIX in Figure 27. Figure 30 is a schematic diagram showing the state before the formation of the first protrusion 30a in Figure 27. In Figure 29, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0285] Each support portion 70 is a first projection 30a that is positioned to project from the first magnetic member 30 toward the second magnetic member 40. Each first projection 30a is a portion that extends continuously from the corresponding first tip portion 34 beyond the corresponding first tip edge 34a, and is a portion that is bent along the first tip edge 34a with the corresponding first tip edge 34a as the boundary. Each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30.

[0286] Note that the magnetic tip portion 24 shown in Figures 27 to 30 has the same width as the corresponding magnetic body portion 23, and is not a magnetic tip portion 24 that is wider than the corresponding magnetic body portion 23 as shown in Figures 48 to 51. Even in such cases, the magnetic teeth portion 22 has a magnetic body portion 23 and a magnetic tip portion 24 that are continuous with the magnetic yoke portion 21, and the magnetic tip portion 24 is the tip portion of the magnetic teeth portion 22.

[0287] Figures 27 and 28 will also be explained. When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, each magnetic tip 24 has one first projection 30a which serves as a support 70. Each first projection 30a protrudes toward the second magnetic member 40, and the tip of each first projection 30a is in contact with the surface of the second magnetic member 40.

[0288] The other configurations of the stator structure 1 according to Embodiment 9 are the same as those of the stator structure 1 according to Embodiment 5, so their description will be omitted.

[0289] Next, the method for manufacturing the stator structure 1 in Embodiment 9 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 9 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0290] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. The first magnetic member 30 to be prepared already has a first projection 30a, which is 14 support parts 70, formed and positioned on the corresponding first tip edge 34a.

[0291] Specifically, each first projection 30a is a portion that extends continuously from the corresponding first tip edge 34 beyond the corresponding first tip edge 34a, and is bent along the first tip edge 34a with the corresponding first tip edge 34a as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30. <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At that time, the protruding tip of each first projection 30a, which is each support part 70, is positioned so that it is in contact with the second magnetic member 40.

[0292] In this configuration, with the first magnetic member 30, the second magnetic member 40, and each support portion 70 arranged, the distance between the first tip portion 34 and the second tip portion 44 is defined by each first protrusion 30a, which is each support portion 70. The worker then places the first magnetic member 30, the second magnetic member 40, and each support portion 70 in this assembled configuration into a mold (not shown).

[0293] Regarding the manufacturing method of the stator structure 1 according to Embodiment 9 described above, the other components are the same as those of the manufacturing method of the stator structure 1 according to Embodiment 5, so their description will be omitted.

[0294] In Embodiment 9, the 14 support portions 70 are composed of 14 first protrusions 30a arranged on the first tip edge 34a of each first tip portion 34. However, this is not the only configuration. The number of support portions 70 can be at least one. That is, one support portion 70 may consist of only one first protrusion 30a.

[0295] In the stator structure 1 according to Embodiment 9, the first magnetic member 30 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. Each first tip portion 34 has a first tip edge 34a which is the edge on the tip side that extends from the first yoke portion 31. Each first projection 30a is a portion that is curved along the corresponding first tip edge 34a. This improves the mechanical strength of the first tip portion 34 and prevents deformation, and also prevents deformation of the second tip portion 44 to which the first projection 30a is connected. Thus, the first teeth portion 32 and second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained. In addition, as a result, each support portion 70 faces the rotating body 90 arranged in the stator structure 1. Therefore, by using a stator structure 1 in which a support portion 70 is arranged at the tip of the magnetic tip portion 24 as a resolver, the detection accuracy of the resolver can be improved.

[0296] In the manufacturing method of the stator structure 1 according to Embodiment 9, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which protrude from the first yoke portion 31 toward the center. Each first tooth portion 32 has a first body portion 33 extending from the first yoke portion 31 and a first tip portion 34 extending from the first body portion 33. The boundary between each first projection 30a and the first magnetic member 30 is the first tip edge 34a, which is the tip edge of the corresponding first tip portion 34. This improves the mechanical strength of the first tip portion 34 on which the first projection 30a is located and prevents deformation. It also prevents deformation of the second tip portion 44 to which the first projection 30a is connected. Therefore, it is possible to obtain first teeth portions 32 and second teeth portions 42 with the designed shape, and to manufacture a stator structure 1 with the designed detection accuracy. Furthermore, this arrangement ensures that each support portion 70 is positioned opposite the rotating body 90 located in the stator structure 1. Consequently, it is possible to manufacture a stator structure 1 in which the support portion 70 is positioned at the tip of the magnetic tip portion 24, which can improve the detection accuracy of the resolver.

[0297] Modification 1 of Embodiment 9. The stator structure 1 according to the modification 1 of Embodiment 9 differs from the stator structure 1 according to Embodiment 9 in that at least one support portion 70 is composed of a first protrusion 30a, and at least one support portion 70 is composed of a second protrusion 40a.

[0298] Figure 31 is a side view of the magnetic teeth portion 22 on which the second projection 40a is located according to modification 1 of Embodiment 9. In Figure 31, the side view of the magnetic teeth portion 22 on which the second projection 40a is located corresponds to the magnetic teeth portion 22 as seen from the direction of arrow XXIX-XXIX in Figure 27. In Figure 10, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0299] At least one of the support portions 70 is a first projection 30a that protrudes from the first magnetic member 30 toward the second magnetic member 40. In addition, at least one of the support portions 70 is a second projection 40a that protrudes from the second magnetic member 40 toward the first magnetic member 30.

[0300] Each second protrusion 40a is a portion that extends continuously from the corresponding second tip edge 44 beyond the corresponding second tip edge 44a, and is a portion that is bent along the second tip edge 44a with respect to the corresponding second tip edge 44a to make it protrude.

[0301] Each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40.

[0302] When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, each magnetic tip 24 is provided with either a first projection 30a or a second projection 40a, which serves as a support portion 70. Each first projection 30a protrudes toward the second magnetic member 40, and the tip of each first projection 30a is in contact with the surface of the second magnetic member 40.

[0303] Each second projection 40a protrudes toward the first magnetic member 30, and the tip of each second projection 40a is in contact with the surface of the first magnetic member 30. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0304] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions. The other components of the stator structure 1 according to the modified example 1 of Embodiment 9 are the same as the other components of the stator structure 1 according to Embodiment 9, so their description is omitted.

[0305] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 9, in the preparation step, the first magnetic member 30 to be prepared already has one or more first protrusions 30a, which are support portions 70, formed on one or more first tip edges 34a and is arranged thereon. The second magnetic member 40 to be prepared already has one or more second protrusions 40a, which are support portions 70, formed on one or more second tip edges 44a and is arranged thereon.

[0306] Specifically, each first projection 30a is a portion that extends continuously from the corresponding first tip edge 34 beyond the corresponding first tip edge 34a, and is a portion that is bent along the first tip edge 34a with the corresponding first tip edge 34a as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30.

[0307] Each second protrusion 40a is a portion that extends continuously from the corresponding second tip edge 44 beyond the corresponding second tip edge 44a, and is a portion that is bent along the second tip edge 44a with respect to the corresponding second tip edge 44a as the boundary. At this time, each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40.

[0308] In the placement process, the worker places the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tips of each first protrusion 30a, which are each support part 70, are positioned to be in contact with the second magnetic member 40. Similarly, the protruding tips of each second protrusion 40a, which are each support part 70, are positioned to be in contact with the first magnetic member 30. In other words, in the placement process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support part 70.

[0309] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown). The other components of the method for manufacturing the stator structure 1 according to the modification 1 of Embodiment 9 are the same as the other components of the method for manufacturing the stator structure 1 according to Embodiment 9, so their description is omitted.

[0310] In the stator structure 1 according to the modified example 1 of Embodiment 9, the first magnetic member 30 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which is an extension of the first yoke portion 31, and a first tip portion 34 which is an extension of the first body portion 33. Each first tip portion 34 has a first tip edge 34a which is an edge on the tip side extending from the first yoke portion 31. The second magnetic member 40 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which is an extension of the second yoke portion 41, and a second tip portion 44 which is an extension of the second body portion 43. Furthermore, each second tip portion 44 has a second tip edge 44a, which is the tip edge extending from the second yoke portion 41. Also, each first projection 30a is a portion that curves along the corresponding first tip edge 34a. Similarly, each second projection 40a is a portion that curves along the corresponding second tip edge 44a. This improves the mechanical strength of the first tip portion 34 where the first projection 30a is located, and the second tip portion 44 where the second projection 40a is located, and prevents deformation. It also prevents deformation of the second tip portion 44 and the first tip portion 34 to which the first projection 30a and the second projection 40a are connected. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained. Furthermore, as a result, each support portion 70 faces the rotating body 90 arranged in the stator structure 1. Therefore, by using a stator structure 1 in which a support portion 70 is arranged at the tip of the magnetic tip portion 24 as a resolver, the detection accuracy of the resolver can be improved.

[0311] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 9, two or more support parts 70 are prepared in the preparation step S01. The second magnetic member 40 prepared in the preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which protrude toward the center from the second yoke portion 41. Each second teeth portion 42 has a second body portion 43 which extends from the second yoke portion 41, and a second tip portion 44 which extends from the second body portion 43. At least one of the support parts 70 prepared in the preparation step S01 is a second projection 40a which extends from the second magnetic member 40 and is bent along a direction perpendicular to the surface of the second magnetic member 40. The boundary between each second projection 40a and the second magnetic member 40 is a second tip edge 44a which is the tip edge of the second tip portion 44. Furthermore, in the arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other such that each second protrusion 40a contacts the first magnetic member 30. This improves the mechanical strength of the first tip portion 34 where the first protrusion 30a is located, and the second tip portion 44 where the second protrusion 40a is located, and prevents deformation. It also prevents deformation of the second tip portion 44 and the first tip portion 34 to which the first protrusion 30a and the second protrusion 40a are connected. Therefore, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be manufactured. In addition, as a result, each support portion 70 is arranged facing the rotating body 90 arranged in the stator structure 1. Therefore, a stator structure 1 can be manufactured in which the support portion 70 is located at the tip of the magnetic tip portion 24, which can improve the detection accuracy of the resolver.

[0312] Embodiment 10. The stator structure 1 in Embodiment 10 differs from the stator structure 1 in Embodiment 9 in that each support portion 70 is positioned on the magnetic side edge 24b of the magnetic tip portion 24. Figure 32 is a schematic diagram showing the magnetic teeth portion 22 according to Embodiment 10. Figure 33 is a side view of the magnetic teeth portion 22 in Figure 32. Figure 34 is a schematic diagram showing the state before the formation of the first protrusion 30a in Figure 33. In Figure 33, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0313] In this embodiment 10, the magnetic tip portion 24 has a width greater than the width of the corresponding magnetic body portion 23. Each support portion 70 is positioned on one of the pair of magnetic side edges 24b that each magnetic tip portion 24 has.

[0314] Each support portion 70 is a first protruding portion 30a that is positioned to protrude from the first magnetic member 30 toward the second magnetic member 40.

[0315] Each first projection 30a is a portion that extends continuously from the first tip portion 34 beyond the corresponding first side edge 34b, and is a portion that is bent along the first side edge 34b with the corresponding first side edge 34b as the boundary. Each first projection 30a is bent along a direction perpendicular to the surface of the first magnetic member 30.

[0316] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, each magnetic tip 24 has a first projection 30a which serves as a support portion 70. Each first projection 30a protrudes toward the second magnetic member 40, and the tip of each first projection 30a is in contact with the surface of the second magnetic member 40. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via their respective support portions 70.

[0317] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions.

[0318] The other components of the stator structure 1 according to Embodiment 10 are the same as those of the stator structure 1 according to Embodiment 9, so their description will be omitted.

[0319] Next, the method for manufacturing the stator structure 1 in Embodiment 10 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 10 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0320] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. The first magnetic member 30 to be prepared has each of the 14 support parts 70, which are first protrusions 30a, already formed and positioned on the corresponding first side edge 34b.

[0321] Specifically, each first projection 30a is a portion that extends continuously from the first tip 34 beyond the corresponding first side edge 34b of each first tip 34, and is bent along the first side edge 34b with the corresponding first side edge 34b as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30. <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tips of each first projection 30a, which are each support portion 70, are positioned so that they are in contact with the second magnetic member 40. In other words, during the positioning process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0322] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0323] Regarding the method for manufacturing the stator structure 1 according to Embodiment 10 described above, other components are the same as those for manufacturing the stator structure 1 according to Embodiment 9, so their description will be omitted.

[0324] In Embodiment 10, the 14 support portions 70 are composed of 14 first protrusions 30a arranged on the first side edge 34b of each first tip portion 34. However, this is not the only configuration. The number of support portions 70 can be at least one. That is, one support portion 70 may consist of only one first protrusion 30a.

[0325] Furthermore, in Embodiment 10, only one first projection 30a, which serves as the support portion 70, is formed on each first tip portion 34. However, this is not the only option. For example, the first projection 30a, which serves as the support portion 70, may be arranged corresponding to each of a pair of first side edges 34b formed on one first tip portion 34. That is, two support portions 70, which are first projections 30a, may be arranged on one first tip portion 34.

[0326] Each of the two first projections 30a, which serve as two support portions 70 formed on one first tip portion 34, protrudes from the first magnetic member 30 toward the second magnetic member 40. Each of the pair of first projections 30a formed on one first tip portion 34 is a portion that extends continuously from the corresponding first tip portion 34 beyond each of the corresponding pair of first side edges 34b, and is a portion that is bent and protrudes along the first side edge 34b with respect to the corresponding first side edge 34b.

[0327] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, each magnetic tip 24 has two first protrusions 30a, which serve as two support portions 70. Each first protrusion 30a protrudes toward the second magnetic member 40, and the tip of each first protrusion 30a is in contact with the surface of the second magnetic member 40. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via the support portions 70.

[0328] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions.

[0329] In the manufacturing method of the stator structure 1 in this case, in the preparation step, the first magnetic member 30 to be prepared already has first protrusions 30a, which are support portions 70, formed and arranged on each of the pair of first side edges 34b of one first tip portion 34.

[0330] Specifically, each of the pair of first protrusions 30a formed on one first tip portion 34 is a portion that extends continuously from the first tip portion 34 beyond each of the pair of first side edges 34b, and is a portion that is bent along the first side edge 34b with the corresponding first side edge 34b as the boundary. At this time, each first protrusion 30a is bent along a direction perpendicular to the surface of the first magnetic member 30.

[0331] In the placement process, the worker places the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tips of each first projection 30a, which are each support portion 70, are placed in contact with the second magnetic member 40. In other words, in the placement process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0332] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0333] In the stator structure 1 according to Embodiment 10, the first magnetic member 30 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which is continuous with the first yoke portion 31, and a first tip portion 34 which is continuous with the first body portion 33. Each first tip portion 34 has a pair of first side edges 34b which are opposite to each of the adjacent first tip portions 34. Each first projection 30a is a portion which is curved along the corresponding first side edge 34b. As a result, the mechanical strength of the first tip portion 34 on which the first projection 30a is located is improved and deformation can be prevented. Deformation of the second tip portion 44 to which the first projection 30a is connected can also be prevented. Therefore, the first teeth portion 32 and second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0334] In the stator structure 1 according to Embodiment 10, at least two first protrusions 30a are bent along each of the pair of first side edges 34b of one first tip 34. This improves the mechanical strength of the first tip 34 on which the first protrusions 30a are located and prevents deformation. It also prevents deformation of the second tip 44 to which the first protrusions 30a are connected. Thus, the first teeth 32 and second teeth 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0335] In the manufacturing method of the stator structure 1 according to Embodiment 10, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which protrude toward the center from the first yoke portion 31. Each first teeth portion 32 has a first body portion 33 which extends from the first yoke portion 31, and a first tip portion 34 which extends from the first body portion 33. Each first tip portion 34 prepared in preparation step S01 has a pair of first side edges 34b which are opposite to each of the two adjacent first tip portions 34. The boundary between each first projection 30a and the first magnetic member 30 is at least one of the corresponding pair of first side edges 34b. This improves the mechanical strength of the first tip portion 34 on which the first projection 30a is located, and prevents deformation. It also prevents deformation of the second tip portion 44 to which the first projection 30a is connected. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0336] In the manufacturing method of the stator structure 1 according to Embodiment 10, two or more support parts 70 are prepared in preparation step S01. Also in preparation step S01, each of the pair of first protrusions 30a that are bent along each of the pair of first side edges 34b of one first tip 34 is prepared as a support part 70. This further improves the mechanical strength of the first tip 34 on which the pair of first protrusions 30a are arranged and prevents deformation. Furthermore, deformation of the magnetic tip 24 having the pair of first protrusions 30a can also be further prevented. Therefore, the first teeth 32 and second teeth 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0337] Modification 1 of Embodiment 10. The stator structure 1 according to the modified example 1 of Embodiment 10 differs from the stator structure 1 of Embodiment 10 in that at least one of the support portions 70 is composed of a first protrusion 30a, and at least one of the support portions 70 is composed of a second protrusion 40a.

[0338] Figure 35 is a side view of the magnetic teeth portion 22 in which the second projection 40a is located according to a modified example 1 of Embodiment 10. In Figure 35, the side view of the magnetic teeth portion 22 in which the second projection 40a is located corresponds to the magnetic teeth portion 22 as seen from the direction of arrow XXIX-XXIX in Figure 27. In Figure 35, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0339] At least one of the support portions 70 is a first projection 30a that protrudes from the first magnetic member 30 toward the second magnetic member 40, and at least one of the support portions 70 is a second projection 40a that protrudes from the second magnetic member 40 toward the first magnetic member 30.

[0340] Each first projection 30a is as described above. Each second projection 40a is a portion that extends continuously from the corresponding second tip 44 beyond the corresponding second side edge 44b, and is a portion that is bent along the second side edge 44b with the corresponding second side edge 44b as the boundary and made to protrude.

[0341] Each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40.

[0342] When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, each magnetic tip 24 is provided with either a first projection 30a or a second projection 40a, which serves as a support portion 70. Each first projection 30a protrudes toward the second magnetic member 40, and the tip of each first projection 30a is in contact with the corresponding surface of the second magnetic member 40.

[0343] Each second projection 40a protrudes toward the first magnetic member 30, and the tip of each second projection 40a is in contact with the corresponding surface of the first magnetic member 30. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0344] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions. The other configurations of the stator structure 1 according to the modified example 1 of Embodiment 10 are the same as the other configurations of the stator structure 1 according to Embodiment 10, so their description is omitted.

[0345] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 10, in the preparation step, the first magnetic member 30 to be prepared already has one or more first protrusions 30a, which are support portions 70, formed on one or more first side edges 34b and is positioned thereon. The second magnetic member 40 to be prepared already has one or more second protrusions 40a, which are support portions 70, formed on one or more second side edges 44b and is positioned thereon.

[0346] Specifically, each second protrusion 40a is a portion that extends continuously from the corresponding second tip portion 44 beyond the corresponding second side edge 44b, and is a portion that is bent along the second side edge 44b with the corresponding second side edge 44b as the boundary. At this time, each second protrusion 40a is bent in a direction perpendicular to the surface of the second magnetic member 40.

[0347] Each first protrusion 30a is as described above in this embodiment 10.

[0348] In the placement process, the worker places the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tip of each first protrusion 30a, which is each support part 70, is placed in contact with the corresponding surface of the second magnetic member 40. Also, the protruding tip of each second protrusion 40a, which is each support part 70, is placed in contact with the corresponding surface of the first magnetic member 30. In other words, in the placement process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support part 70.

[0349] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0350] Furthermore, the first tip portion 34 on which the first protrusion 30a is located and the second tip portion 44 on which the second protrusion 40a is located may be arranged facing each other. That is, the magnetic tip portion 24 may have two support portions 70, the first protrusion 30a and the second protrusion 40a, respectively. In this case, the first side edge 34b along which the first protrusion 30a is curved and the second side edge 44b along which the second protrusion 40a is curved do not face each other. The other configurations of the stator structure 1 according to the modified example 1 of Embodiment 10 are the same as the other configurations of the stator structure 1 according to Embodiment 10, so their description is omitted.

[0351] In the stator structure 1 according to modification 1 of Embodiment 10, the first magnetic member 30 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which is an extension of the first yoke portion 31, and a first tip portion 34 which is an extension of the first body portion 33. Each first tip portion 34 has a pair of first side edges 34b which are opposite to each of the adjacent first tip portions 34. Each second teeth portion 42 has a second body portion 43 which is an extension of the second yoke portion 41, and a second tip portion 44 which is an extension of the second body portion 43. Furthermore, each second tip portion 44 has a pair of second side edges 44b that face each of the adjacent second tip portions 44. Also, each first projection 30a is a portion that curves along the corresponding first side edge 34b, and each second projection 40a is a portion that curves along the corresponding second side edge 44b. This improves the mechanical strength of the first tip portion 34 where the first projection 30a is located, and the second tip portion 44 where the second projection 40a is located, and prevents deformation. It also prevents deformation of the second tip portion 44 and the first tip portion 34 to which the first projection 30a and the second projection 40a are connected. Thus, it is possible to obtain the first teeth portion 32 and the second teeth portion 42 with the designed shape, and to obtain a stator structure 1 with the designed detection accuracy.

[0352] In the stator structure 1 according to modification 1 of Embodiment 10, the first tip portion 34 on which the first protrusion 30a is located and the second tip portion 44 on which the second protrusion 40a is located are arranged facing each other. Furthermore, the first side edge 34b along which the first protrusion 30a is curved and the second side edge 44b along which the second protrusion 40a is curved are not facing each other. As a result, the mechanical strength of the first tip portion 34 on which the first protrusion 30a is located and the second tip portion 44 on which the second protrusion 40a is located is improved and deformation can be prevented. Furthermore, deformation of the magnetic tip portion 24 having the first protrusion 30a and the second protrusion 40a can also be further prevented. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0353] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 10, two or more support parts 70 are prepared in the preparation step S01. The second magnetic member 40 prepared in the preparation step S01 has a second yoke part 41 which is annular or part of an annular shape, and a plurality of second teeth parts 42 which protrude from the second yoke part 41 toward the center. Each second teeth part 42 has a second body part 43 which extends from the second yoke part 41 and a second tip part 44 which extends from the second body part 43. Each second tip part 44 has a pair of second side edges 44b which are a pair of edges that face each of the adjacent second tip parts 44. At least one of the support parts 70 prepared in the preparation step S01 is a second projection part 40a which extends from the second magnetic member 40 and is bent along a direction perpendicular to the surface of the second magnetic member 40. The boundary between each second projection part 40a and the second magnetic member 40 is a second side edge 44b. Furthermore, in the arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other such that each second protrusion 40a is in contact with the first magnetic member 30. This further improves the mechanical strength of the first tip portion 34 where the first protrusion 30a is located, and the second tip portion 44 where the second protrusion 40a is located, and prevents deformation. In addition, deformation of the magnetic tip portion 24 having the first protrusion 30a and the second protrusion 40a can also be further prevented. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0354] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 10, in the arrangement step S02, the first tooth portion 32 having each first protrusion 30a and the second tooth portion 42 having each second protrusion 40a are arranged facing each other. This further improves the mechanical strength of the magnetic tooth portion 22, where the first tooth portion 32 having the first protrusion 30a and the second tooth portion 42 having the opposing second protrusion 40a, i.e., the two support portions 70, are arranged, and deformation can be prevented. Furthermore, deformation of the magnetic tip portion 24 having the first protrusion 30a and the second protrusion 40a can also be further prevented. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0355] Embodiment 11. The stator structure 1 in Embodiment 11 differs from the stator structure 1 in Embodiment 10 in that each support portion 70 is positioned on the magnetic rear edge 24c of the magnetic tip portion 24. Figure 36 is a schematic diagram showing the magnetic teeth portion according to Embodiment 11. Figure 37 is a side view of the magnetic teeth portion 22 in Figure 36. Figure 38 is a schematic diagram showing the state before the formation of the first protrusion 30a in Figure 37. In Figure 37, the side view of the magnetic teeth portion 22 in the magnetic member 20 of Embodiment 10, as seen from the direction of arrow XXIX-XXIX in Figure 27, is shown. In Figure 37, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0356] Each support portion 70 is positioned on one of the pair of magnetic rear edges 24c at each magnetic tip portion 24.

[0357] Each support portion 70 is a first protruding portion 30a that is positioned to protrude from the first magnetic member 30 toward the second magnetic member 40.

[0358] Each first projection 30a is a portion that extends continuously from the corresponding first tip portion 34 beyond the corresponding first rear edge 34c, and is a portion that is bent along the first rear edge 34c to protrude. Each first projection 30a is bent along a direction perpendicular to the surface of the first magnetic member 30.

[0359] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, each magnetic tip 24 has a first projection 30a which serves as a support portion 70. Each first projection 30a protrudes toward the second magnetic member 40, and the tip of each first projection 30a is in contact with the surface of the second magnetic member 40. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via their respective support portions 70.

[0360] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions.

[0361] The other components of the stator structure 1 according to Embodiment 11 are the same as those of the stator structure 1 according to Embodiment 10, so their description will be omitted.

[0362] Next, the method for manufacturing the stator structure 1 in Embodiment 11 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 11 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0363] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. The first magnetic member 30 to be prepared has each of the 14 support parts 70, which are first protrusions 30a, already formed and positioned on the corresponding first rear edge 34c.

[0364] Specifically, each first projection 30a is a portion that extends continuously from the corresponding first tip 34 beyond the corresponding first rear edge 34c, and is bent along the first rear edge 34c with the corresponding first rear edge 34c as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30. <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tips of each first projection 30a, which are each support portion 70, are positioned so that they are in contact with the second magnetic member 40. In other words, during the positioning process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0365] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0366] Regarding the method for manufacturing the stator structure 1 according to Embodiment 11 described above, other components are the same as those for manufacturing the stator structure 1 according to Embodiment 10, so their description will be omitted.

[0367] In Embodiment 11, the 14 support portions 70 consist of a total of 14 first protrusions 30a, each of which is located on one of the first rear edges 34c of each first tip portion 34. However, the configuration is not limited to this. The number of support portions 70 can be at least one. For example, one support portion 70 may consist of only one first protrusion 30a.

[0368] Furthermore, in Embodiment 11, only one first projection 30a, which serves as the support portion 70, is formed on each first tip portion 34. However, this is not the only option. For example, the first projection 30a, which serves as the support portion 70, may be arranged corresponding to each of a pair of first rear edges 34c formed on one first tip portion 34. That is, two support portions 70, which are first projections 30a, may be arranged on one first tip portion 34.

[0369] Each of the two first projections 30a, which serve as two support portions 70 formed on one first tip portion 34, protrudes from the first magnetic member 30 toward the second magnetic member 40. Each of the pair of first projections 30a formed on one first tip portion 34 is a portion that extends continuously from the corresponding first tip portion 34 beyond each of the corresponding pair of first rear edges 34c, and is a portion that is bent and protrudes along the first rear edge 34c with respect to the corresponding first rear edge 34c.

[0370] In the manufacturing method of the stator structure 1 in this case, during the preparation step, the first magnetic member 30 to be prepared already has a first projection 30a, which is a support portion 70, formed on each of the pair of first rear edges 34c of a first tip portion 34.

[0371] Specifically, each of the pair of first protrusions 30a formed on one first tip portion 34 is a portion that extends continuously from the first tip portion 34 beyond each of the pair of first rear edges 34c, and is a portion that is bent along the first rear edge 34c with the corresponding first rear edge 34c as the boundary. At this time, each first protrusion 30a is bent along a direction perpendicular to the surface of the first magnetic member 30.

[0372] In the placement process, the worker places the first magnetic member 30 and the second magnetic member 40 facing each other. At that time, the protruding tips of each first projection 30a, which are the support parts 70, are placed in contact with the second magnetic member 40.

[0373] In the stator structure 1 according to Embodiment 11, the first magnetic member 30 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. Each first tip portion 34 has a pair of first rear end edges 34c which face the first yoke portion 31 and sandwich the first body portion 33. Each first projection 30a is a portion which is curved along the corresponding first rear end edge 34c. As a result, the mechanical strength of the first tip portion 34 is improved and deformation can be prevented, and deformation of the second tip portion 44 to which the first projection 30a is connected can also be prevented. Therefore, the first teeth portion 32 and second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0374] In the stator structure 1 according to Embodiment 11, at least two first protrusions 30a are bent along each of the pair of first rear edges 34c of one first tip 34. This improves the mechanical strength of the first tip 34 and prevents deformation, and also prevents deformation of the second tip 44 to which the first protrusions 30a are connected. Thus, the first teeth 32 and second teeth 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0375] In the manufacturing method of the stator structure 1 according to Embodiment 11, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which protrude toward the center from the first yoke portion 31. Each first teeth portion 32 has a first body portion 33 which extends from the first yoke portion 31, and a first tip portion 34 which extends from the first body portion 33. Each first tip portion 34 prepared in preparation step S01 has a pair of first rear edge 34c which are rear-end edges facing the corresponding first yoke portion 31 and are arranged on either side of the corresponding first body portion 33. The boundary between each first projection 30a and the first magnetic member 30 is at least one of the corresponding pair of first rear edge 34c. This improves the mechanical strength of the first tip portion 34 on which the first projection 30a is located and prevents deformation. Furthermore, deformation of the second tip portion 44 to which the first protrusion 30a is connected can be prevented. Therefore, the first tooth portion 32 and the second tooth portion 42 can be obtained in the designed shape, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0376] In the manufacturing method of the stator structure 1 according to Embodiment 11, two or more support parts 70 are prepared in preparation step S01. Also in preparation step S01, each of the pair of first protrusions 30a that are bent along each of the pair of first rear edges 34c of one first tip 34 is prepared as a support part 70. This further improves the mechanical strength of the first tip 34 on which the pair of first protrusions 30a are arranged and prevents deformation. Furthermore, deformation of the magnetic tip 24 having the pair of first protrusions 30a can also be further prevented. Thus, the first teeth 32 and second teeth 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0377] Modification 1 of Embodiment 11. The stator structure 1 according to the modified example 1 of Embodiment 11 differs from the stator structure 1 of Embodiment 11 in that at least one of the support portions 70 is composed of a first protrusion 30a, and at least one of the support portions 70 is composed of a second protrusion 40a.

[0378] Figure 39 is a side view of the magnetic teeth portion 22 on which the second projection 40a is located according to a modified example 1 of Embodiment 11. Figure 39 shows a side view of the magnetic teeth portion 22 on which the second projection 40a is located, as seen from the direction of arrow XXIX-XXIX in Figure 27. In Figure 39, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0379] At least one of the support portions 70 is a first projection 30a that protrudes from the first magnetic member 30 toward the second magnetic member 40, and at least one of the support portions 70 is a second projection 40a that protrudes from the second magnetic member 40 toward the first magnetic member 30.

[0380] Each second projection 40a is a portion that extends continuously from the corresponding second tip portion 44 beyond the corresponding second rear edge 44c, and is a portion that is bent along the second rear edge 44c with the corresponding second rear edge 44c as the boundary and is made to protrude.

[0381] Each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40.

[0382] When the first magnetic member 30 and the second magnetic member 40 are arranged facing each other, at least one magnetic tip 24 has one first projection 30a serving as a support portion 70, and at least one magnetic tip 24 has one second projection 40a serving as a support portion 70.

[0383] Each first projection 30a protrudes toward the second magnetic member 40, and the tip of each first projection 30a is in contact with the surface of the second magnetic member 40. Each second projection 40a protrudes toward the first magnetic member 30, and the tip of each second projection 40a is in contact with the surface of the first magnetic member 30. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0384] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions. The other configurations of the stator structure 1 according to the modified example 11 of Embodiment 11 are the same as the other configurations of the stator structure 1 according to Embodiment 11, so their description is omitted.

[0385] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 11, in the preparation step, one or more first protrusions 30a, which are support portions 70, are already formed and arranged on one or more first rear edges 34c of the first magnetic member 30 to be prepared. One or more second protrusions 40a, which are support portions 70, are already formed and arranged on one or more second rear edges 44c of the second magnetic member 40 to be prepared.

[0386] Specifically, each second protrusion 40a is a portion that extends continuously from the corresponding second tip portion 44 beyond the corresponding second rear edge 44c of the second magnetic member 40, and is a portion that is bent along the second rear edge 44c with the corresponding second rear edge 44c as the boundary. At this time, each second protrusion 40a is bent in a direction perpendicular to the surface of the second magnetic member 40. Each first protrusion 30a is as described above in this embodiment 11.

[0387] In the placement process, the worker places the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the protruding tips of each first protrusion 30a, which are each support part 70, are positioned to be in contact with the second magnetic member 40. Similarly, the protruding tips of each second protrusion 40a, which are each support part 70, are positioned to be in contact with the first magnetic member 30. In other words, in the placement process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support part 70.

[0388] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0389] Furthermore, the first tip portion 34 on which the first protrusion 30a is located and the second tip portion 44 on which the second protrusion 40a is located may be arranged facing each other. That is, the magnetic tip portion 24 may have two support portions 70, the first protrusion 30a and the second protrusion 40a, respectively. In this case, the first rear edge 34c along which the first protrusion 30a is curved and the second rear edge 44c along which the second protrusion 40a is curved do not face each other. The other configurations of the method for manufacturing the stator structure 1 according to the modified example 11 of Embodiment 11 are the same as the other configurations of the method for manufacturing the stator structure 1 according to Embodiment 11, so their description is omitted.

[0390] In the stator structure 1 according to modification 1 of Embodiment 11, the first magnetic member 30 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. Each first tip portion 34 has a pair of first rear end edges 34c which face the first yoke portion 31 and sandwich the first body portion 33. The second magnetic member 40 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which continues from the second yoke portion 41, and a second tip portion 44 which continues from the second body portion 43. Furthermore, each first tip portion 34 has a pair of second rear edges 44c that face the second yoke portion 41 and sandwich the second body portion 43. Also, each first projection 30a is a portion that curves along the corresponding first rear edge 34c, and each second projection 40a is a portion that curves along the corresponding second rear edge 44c. As a result, the mechanical strength of the first tip portion 34 and the second tip portion 44 is improved and deformation can be prevented. Therefore, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0391] In the stator structure 1 according to modification 1 of Embodiment 11, the first tip portion 34 on which the first protrusion 30a is located and the second tip portion 44 on which the second protrusion 40a is located are arranged facing each other. Furthermore, the first rear edge 34c along which the first protrusion 30a is curved and the second rear edge 44c along which the second protrusion 40a is curved are not facing each other. As a result, the mechanical strength of the opposing first tip portion 34 and second tip portion 44 is improved, and deformation can be prevented. Therefore, the shapes of the opposing first teeth portion 32 and second teeth portion 42, i.e., the shape of the magnetic teeth portion 22, are designed, and a stator structure 1 with the designed detection accuracy can be obtained.

[0392] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 11, two or more support parts 70 are prepared in the preparation step S01. The second magnetic member 40 prepared in the preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which protrude from the second yoke portion 41 toward the center. Each second teeth portion 42 has a second body portion 43 which extends from the second yoke portion 41, and a second tip portion 44 which extends from the second body portion 43. Each second tip portion 44 has a pair of second rear edge edges 44c which are rear-end edges facing the corresponding second yoke portion 41 and are arranged on either side of the corresponding second body portion 43. At least one of the support parts 70 prepared in the preparation step S01 is a second projection portion 40a which extends from the second magnetic member 40 and is bent along a direction perpendicular to the surface of the second magnetic member 40. Furthermore, the boundary between each second protrusion 40a and the second magnetic member 40 is at least one of the pair of second rear edges 44c. In addition, in the arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged facing each other so that each second protrusion 40a is in contact with the first magnetic member 30. This improves the mechanical strength of the first tip portion 34 where the first protrusion 30a is located and the second tip portion 44 where the second protrusion 40a is located, and prevents deformation. Furthermore, deformation of the magnetic tip portion 24 having the first protrusion 30a and the second protrusion 40a can also be better prevented. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0393] In the manufacturing method of the stator structure 1 according to the modified example 1 of Embodiment 11, in the arrangement step S02, the first tooth portion 32 having each first protrusion 30a and the second tooth portion 42 having each second protrusion 40a are arranged facing each other. This improves the mechanical strength of the magnetic tooth portion 22, where the first tooth portion 32 having the first protrusion 30a and the second tooth portion 42 having the opposing second protrusion 40a, i.e., the two support portions 70, are arranged, and deformation can be prevented. Furthermore, deformation of the magnetic tip portion 24 having the first protrusion 30a and the second protrusion 40a can also be further prevented. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0394] Embodiment 12. The stator structure 1 in Embodiment 12 differs from the stator structure 1 in Embodiment 9 in that each support portion 70 is composed of a first protrusion 30a and a second protrusion 40a.

[0395] Figure 40 is a schematic diagram showing the magnetic teeth portion according to Embodiment 12. Figure 41 is a side view of the magnetic teeth portion 22 in Figure 40. Figure 41 shows the side view of the magnetic teeth portion 22 in the magnetic member 20 of Embodiment 12, which corresponds to the magnetic teeth portion 22 as seen from the line XXIX-XXIX in Figure 27. In Figure 41, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0396] In this embodiment 12, the magnetic tip portion 24 has a width greater than the width of the corresponding magnetic body portion 23. Each support portion 70 is positioned on each of the magnetic tip edges 24a of each magnetic tip portion 24. Each support portion 70 consists of a first projection 30a and a corresponding second projection 40a.

[0397] Each first projection 30a is positioned along the first tip edge 34a of each first tip portion 34. Each first projection 30a is a portion that extends continuously from the first tip portion 34 beyond the corresponding first tip edge 34a, and is a portion that is bent along the first tip edge 34a with respect to the corresponding first tip edge 34a to make it protrude. Each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30.

[0398] The second magnetic member 40 and the second protrusion 40a are the same as the first magnetic member 30 and the first protrusion 30a. Each second protrusion 40a is positioned along the second tip edge 44a of each second tip 44.

[0399] Each second projection 40a is a portion that extends continuously from the corresponding second tip edge 44 beyond the corresponding second tip edge 44a, and is a portion that is bent along the second tip edge 44a with respect to the corresponding second tip edge 44a to make it protrude. Each second projection 40a is bent along a direction perpendicular to the surface of the second magnetic member 40.

[0400] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, a support portion 70 is provided at each magnetic tip portion 24. When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, each first projection 30a protrudes toward the second magnetic member 40, and each second projection 40a protrudes toward the first magnetic member 30.

[0401] Furthermore, each first projection 30a and its corresponding second projection 40a are positioned facing each other, and the tips of the first projection 30a and the corresponding second projection 40a that are positioned facing each other are in contact with each other. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via their respective support portions 70.

[0402] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions.

[0403] The other components of the stator structure 1 according to Embodiment 12 are the same as those of the stator structure 1 according to Embodiment 9, so their description will be omitted.

[0404] Next, the method for manufacturing the stator structure 1 in Embodiment 12 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 12 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0405] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x for the manufacture of the stator structure 1. The first magnetic member 30 prepared in the preparation step already has a total of 14 first protrusions 30a formed on the first tip edge 34a of the first tip portion 34 of all 14 first teeth portions 32.

[0406] Furthermore, the second magnetic member 40 prepared in the preparation step already has a total of 14 second protrusions 40a formed on each of the second tip edges 44a of the second tip portions 44 of all 14 second teeth portions 42.

[0407] Specifically, each first projection 30a is a portion that extends continuously from the first tip 34 beyond the first tip edge 34a of each first tip 34 of the first magnetic member 30. Each first projection 30a is bent along the first tip edge 34a, with the corresponding first tip edge 34a as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30. Since each first tip 34 has one first tip edge 34a, one first projection 30a is formed on one first tip 34.

[0408] Each second projection 40a is a portion that extends continuously from the second tip 44 beyond the second tip edge 44a of each second tip 44 of the second magnetic member 40. Each second projection 40a is bent along the second tip edge 44a, with the corresponding second tip edge 44a as the boundary. At this time, each second projection 40a is bent in a direction perpendicular to the surface of the second magnetic member 40. Since each second tip 44 has one second tip edge 44a, one second projection 40a is formed on one second tip 44.

[0409] <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that each first protrusion 30a and the corresponding second protrusion 40a are in contact with each other. In the state where the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the tip of each first protrusion 30a and the tip of the corresponding second protrusion 40a are in contact with each other. As a result, each support portion 70 is positioned between the first magnetic member 30 and the second magnetic member 40. That is, in the positioning process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0410] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0411] Regarding the method for manufacturing the stator structure 1 according to Embodiment 12 described above, other components are the same as those for manufacturing the stator structure 1 according to Embodiment 9, so their description will be omitted.

[0412] In Embodiment 12, 14 support parts 70 are provided. However, this is not the only configuration. At least one support part 70 is sufficient. For example, a support part 70 does not necessarily have to be placed at each magnetic tip 24.

[0413] In the stator structure 1 according to Embodiment 12, the first magnetic member 30 has a first yoke portion 31 which is an annular shape or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which is an extension of the first yoke portion 31, and a first tip portion 34 which is an extension of the first body portion 33. Each first tip portion 34 has a first tip edge 34a which is an edge on the tip side extending from the first yoke portion 31. The second magnetic member 40 has a second yoke portion 41 which is an annular shape or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which is an extension of the second yoke portion 41, and a second tip portion 44 which is an extension of the second body portion 43. Furthermore, each second tip portion 44 has a second tip edge 44a, which is the tip edge extending from the second yoke portion 41. Also, each first projection 30a is a portion that curves along the corresponding first tip edge 34a, and each second projection 40a is a portion that curves along the corresponding second tip edge 44a. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained. In addition, as a result, each support portion 70 faces the rotating body 90 arranged in the stator structure 1. Therefore, by using a stator structure 1 in which support portions 70 are arranged at the tips of the magnetic tip portions 24 as a resolver, the detection accuracy of the resolver can be improved.

[0414] In the manufacturing method of the stator structure 1 according to Embodiment 12, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which protrude from the first yoke portion 31 toward the center. Each first teeth portion 32 has a first body portion 33 which extends from the first yoke portion 31, and a first tip portion 34 which extends from the first body portion 33. The boundary between each first projection 30a and the first magnetic member 30 is the first tip edge 34a which is the tip edge of the first tip portion 34. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which protrude from the second yoke portion 41 toward the center. Each second teeth portion 42 has a second body portion 43 which extends from the second yoke portion 41, and a second tip portion 44 which extends from the second body portion 43. Furthermore, the boundary between each second protrusion 40a and the second magnetic member 40 is the second tip edge 44a, which is the tip edge of the second tip portion 44. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation. Therefore, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be manufactured. In addition, as a result, each support portion 70 is positioned to face the rotating body 90 arranged in the stator structure 1. Therefore, a stator structure 1 can be manufactured in which the support portion 70 is positioned at the tip of the magnetic tip portion 24, which can improve the detection accuracy of the resolver.

[0415] Embodiment 13. The stator structure 1 in Embodiment 13 differs from the stator structure 1 in Embodiment 12 in that each support portion 70 is located on the magnetic side edge 24b.

[0416] Figure 42 is a schematic diagram showing the magnetic teeth portion according to Embodiment 13. Figure 43 is a side view of the magnetic teeth portion 22 in Figure 42. Figure 43 shows the side view of the magnetic teeth portion 22 in the magnetic member 20 of Embodiment 13, which corresponds to the magnetic teeth portion 22 as seen from the line XXIX-XXIX in Figure 27. In Figure 43, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0417] Each support portion 70 is positioned on one of the pair of magnetic side edges 24b that each magnetic tip portion 24 has. Each support portion 70 is composed of a first projection 30a and a corresponding second projection 40a.

[0418] Each first projection 30a is positioned along the first side edge 34b of each first tip 34. Each first projection 30a is a portion that extends continuously from the corresponding first tip 34 beyond the corresponding first side edge 34b, and is a portion that is bent and protruded along the first side edge 34b with the corresponding first side edge 34b as the boundary.

[0419] Each first projection 30a is bent along a direction perpendicular to the surface of the first magnetic member 30. That is, the portion that extends continuously from the first tip 34 beyond the first side edge 34b is bent along the corresponding first side edge 34b to form the first projection 30a.

[0420] The second magnetic member 40 and the second protrusion 40a are the same as the first magnetic member 30 and the first protrusion 30a. Each second protrusion 40a is positioned along the second side edge 44b of each second tip 44. Each second protrusion 40a is a portion that extends continuously from the corresponding second tip 44 beyond the corresponding second side edge 44b, and is a portion that is bent and protruded along the second side edge 44b with the corresponding second side edge 44b as the boundary.

[0421] Each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40. That is, the portion that extends continuously from the second tip 44 beyond the second side edge 44b is bent along the corresponding second side edge 44b to form the second protrusion 40a.

[0422] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, a support portion 70 is provided at each magnetic tip portion 24. When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, each first projection 30a protrudes toward the second magnetic member 40, and each second projection 40a protrudes toward the first magnetic member 30.

[0423] Furthermore, each first projection 30a and its corresponding second projection 40a are arranged facing each other. The tips of the opposing first projections 30a and the corresponding second projections 40a are in contact with each other. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via their respective support portions 70.

[0424] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions.

[0425] The other components of the stator structure 1 according to Embodiment 13 are the same as those of the stator structure 1 according to Embodiment 12, so their description will be omitted.

[0426] Next, the method for manufacturing the stator structure 1 in Embodiment 13 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 13 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0427] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x for the manufacture of the stator structure 1. The first magnetic member 30 prepared in the preparation step has a pair of first side edges 34b on the first tip 34 of all 14 first teeth 32, and one of the pair of first side edges 34b already has a corresponding first projection 30a formed and prepared. There are 14 first projections 30a formed.

[0428] Furthermore, the second magnetic member 40 prepared in the preparation step has a pair of second side edges 44b on the second tip portions 44 of all 14 second teeth portions 42. A corresponding second projection 40a is already formed and prepared on one of the pair of second side edges 44b. There are 14 second projections 40a formed.

[0429] Specifically, each first projection 30a is a portion that extends continuously from the corresponding first tip 34 beyond one of the pair of first side edges 34b that each first tip 34 of the first magnetic member 30 has. Each first projection 30a is bent along the first side edge 34b with the corresponding first side edge 34b as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30. One first projection 30a is formed on each first tip 34.

[0430] Each second projection 40a is a portion that extends continuously from the corresponding second tip 44 beyond one of the pair of second side edges 44b that each second tip 44 of the second magnetic member 40 has. Each second projection 40a is bent along the second side edge 44b with the corresponding second side edge 44b as the boundary. At this time, each second projection 40a is bent in a direction perpendicular to the surface of the second magnetic member 40. One second projection 40a is formed on each second tip 44.

[0431] <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that each first protrusion 30a and the corresponding second protrusion 40a are in contact with each other. In the state where the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the tip of each first protrusion 30a and the tip of the corresponding second protrusion 40a are in contact with each other. As a result, each support portion 70 is positioned between the first magnetic member 30 and the second magnetic member 40. That is, in the positioning process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0432] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0433] Regarding the manufacturing method of the stator structure 1 according to Embodiment 13 described above, the other components are the same as those of the manufacturing method of the stator structure 1 according to Embodiment 12, so their description will be omitted.

[0434] In Embodiment 13, 14 support parts 70 are provided. However, this is not the only configuration. At least one support part 70 is required. For example, one support part 70 does not necessarily have to be placed on each magnetic tooth part 22. Alternatively, for example, support parts 70 may be placed on each magnetic side edge 24b, meaning that 28 support parts 70 may be provided.

[0435] In the stator structure 1 according to Embodiment 13, the first magnetic member 30 has a first yoke portion 31 that is annular or part of an annular shape, and a plurality of first teeth portions 32 that extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 that continues from the first yoke portion 31, and a first tip portion 34 that continues from the first body portion 33. Each first tip portion 34 also has a pair of first side edges 34b that face each of the adjacent first tip portions 34. The second magnetic member 40 has a second yoke portion 41 that is annular or part of an annular shape, and a plurality of second teeth portions 42 that extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 that continues from the second yoke portion 41, and a second tip portion 44 that continues from the second body portion 43. Furthermore, each second tip portion 44 has a pair of second side edges 44b that face each of the adjacent second tip portions 44. Also, each first projection 30a is a portion that curves along the corresponding first side edge 34b, and each second projection 40a is a portion that curves along the corresponding second side edge 44b. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation. Thus, it is possible to obtain the first teeth portion 32 and the second teeth portion 42 with the designed shape, and to obtain a stator structure 1 with the designed detection accuracy.

[0436] In the stator structure 1 according to Embodiment 13, at least two first protrusions 30a are curved along each of the pair of first side edges 34b of one first tip portion 34. Also, at least two second protrusions 40a are curved along each of the pair of second side edges 44b of one second tip portion 44. Furthermore, each of the two first protrusions 30a and each of the two second protrusions 40a are in contact with each other. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation. Therefore, it is possible to obtain first teeth portions 32 and second teeth portions 42 with the designed shape, and to obtain a stator structure 1 with the designed detection accuracy.

[0437] In the manufacturing method of the stator structure 1 according to Embodiment 13, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which protrude from the first yoke portion 31 toward the center. Each first teeth portion 32 has a first body portion 33 which extends from the first yoke portion 31, and a first tip portion 34 which extends from the first body portion 33. Each first tip portion 34 has a pair of first side edge edges 34b which are opposite to each of the two adjacent first tip portions 34. The boundary between each first projection 30a and the first magnetic member 30 is at least one of the pair of first side edge edges 34b. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which protrude from the second yoke portion 41 toward the center. Furthermore, each second tooth portion 42 has a second body portion 43 extending from the second yoke portion 41 and a second tip portion 44 extending from the second body portion 43. Each second tip portion 44 also has a pair of second side edges 44b, which are opposite to each of the adjacent second tip portions 44. The boundary between each second projection 40a and the second magnetic member 40 is at least one of the pair of second side edges 44b. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation. Thus, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0438] In the manufacturing method of the stator structure 1 according to Embodiment 13, in preparation step S01, two or more support parts 70 are prepared. Also in preparation step S01, a pair of first protrusions 30a are prepared on at least one first tip 34, with each of the pair of first side edges 34b as the boundary. Also, a pair of second protrusions 40a are prepared on at least one second tip 44, with each of the pair of second side edges 44b as the boundary. In arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged so that the pair of first protrusions 30a and the pair of second protrusions 40a face each other. This improves the mechanical strength of the first tip 34 and the second tip 44 and prevents deformation. Therefore, the first teeth 32 and the second teeth 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured. This improves the mechanical strength of the first tip 34 and the second tip 44 and prevents deformation. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0439] Embodiment 14. The stator structure 1 in Embodiment 14 differs from the stator structure 1 in Embodiment 12 in that each support portion 70 is located on the magnetic rear edge 24c.

[0440] Figure 44 is a schematic diagram showing the magnetic teeth portion according to Embodiment 14. Figure 45 is a side view of the magnetic teeth portion 22 in Figure 44. Figure 45 shows the side view of the magnetic teeth portion 22 in the magnetic member 20 of Embodiment 14, which corresponds to the magnetic teeth portion 22 as seen from the line XXIX-XXIX in Figure 27. In Figure 45, a part of the magnetic yoke portion 21 is shown as a cross-section.

[0441] Each support portion 70 is positioned on one of the pair of magnetic rear edges 24c formed on each magnetic tip portion 24. Each support portion 70 consists of a first projection 30a and a corresponding second projection 40a.

[0442] Each first projection 30a is positioned along the first rear edge 34c of each first tip 34. Each first projection 30a is a portion that extends continuously from the corresponding first tip 34 beyond the corresponding first rear edge 34c, and is a portion that is bent and protruded along the first rear edge 34c with the corresponding first rear edge 34c as the boundary.

[0443] Each first protrusion 30a is bent along a direction perpendicular to the surface of the first magnetic member 30. That is, the portion that extends continuously from the first tip 34 beyond the first rear edge 34c is bent along the first rear edge 34c, with the corresponding first rear edge 34c as the boundary, to form the first protrusion 30a.

[0444] The second magnetic member 40 and the second protrusion 40a are the same as the first magnetic member 30 and the first protrusion 30a. Each second protrusion 40a is positioned along the second rear edge 44c of each second tip 44. Each second protrusion 40a is a portion that extends continuously from the corresponding second tip 44 beyond the corresponding second rear edge 44c, and is a portion that is bent and protruded along the second rear edge 44c with the corresponding second rear edge 44c as the boundary.

[0445] Each second protrusion 40a is bent along a direction perpendicular to the surface of the second magnetic member 40. That is, the portion that extends continuously from the second tip 44 beyond the second rear edge 44c is bent along the corresponding second rear edge 44c to form the second protrusion 40a.

[0446] When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, a support portion 70 is provided at each magnetic tip portion 24. When the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, each first projection 30a protrudes toward the second magnetic member 40, and each second projection 40a protrudes toward the first magnetic member 30.

[0447] Furthermore, each first projection 30a and its corresponding second projection 40a are arranged facing each other. The tips of the opposing first projections 30a and the corresponding second projections 40a are in contact with each other. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via their respective support portions 70.

[0448] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions.

[0449] The other components of the stator structure 1 according to Embodiment 14 are the same as those of the stator structure 1 according to Embodiment 13, so their description will be omitted.

[0450] Next, the method for manufacturing the stator structure 1 in Embodiment 14 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 14 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0451] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, and a non-magnetic material 50x for the manufacture of the stator structure 1. The first magnetic member 30 prepared in the preparation step has a pair of first rear edges 34c at the first tip 34 of all 14 first teeth 32, and one of the pair of first rear edges 34c already has a corresponding first projection 30a formed and prepared. There are 14 first projections 30a formed.

[0452] Furthermore, the second magnetic member 40 prepared in the preparation step has a pair of second rear edges 44c on the second tip portions 44 of all 14 second teeth portions 42. A corresponding second projection 40a is already formed and prepared on one of the pair of second rear edges 44c. There are 14 second projections 40a formed.

[0453] Specifically, each first projection 30a is a portion that extends continuously from the corresponding first tip 34 beyond one of the pair of first rear edges 34c that each first tip 34 of the first magnetic member 30 has, and is bent along the first rear edge 34c with the corresponding first rear edge 34c as the boundary. At this time, each first projection 30a is bent in a direction perpendicular to the surface of the first magnetic member 30. One first projection 30a is formed on each first tip 34.

[0454] Each second projection 40a is a portion that extends continuously from the corresponding second tip 44 beyond one of the pair of second rear edges 44c that each second tip 44 of the second magnetic member 40 has, and is bent along the second rear edge 44c with respect to the corresponding second rear edge 44c as the boundary. At this time, each second projection 40a is bent in a direction perpendicular to the surface of the second magnetic member 40. One second projection 40a is formed on each second tip 44.

[0455] <Placement process> The worker positions the first magnetic member 30 and the second magnetic member 40 facing each other. At this time, the first magnetic member 30 and the second magnetic member 40 are positioned facing each other such that each first protrusion 30a and the corresponding second protrusion 40a are in contact with each other. In the state where the first magnetic member 30 and the second magnetic member 40 are positioned facing each other, the tip of each first protrusion 30a and the tip of the corresponding second protrusion 40a are in contact with each other. As a result, each support portion 70 is positioned between the first magnetic member 30 and the second magnetic member 40. That is, in the positioning process, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0456] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0457] Regarding the manufacturing method of the stator structure 1 according to Embodiment 14 described above, the other components are the same as those of the manufacturing method of the stator structure 1 according to Embodiment 13, so their description will be omitted.

[0458] In Embodiment 14, 14 support portions 70 are provided. However, this is not the only configuration. At least one support portion 70 is sufficient. Furthermore, support portions 70 may be arranged on each of the pair of magnetic rear edges 24c of a single magnetic teeth portion 22.

[0459] In the stator structure 1 according to Embodiment 14, the first magnetic member 30 has a first yoke portion 31 which is an annular shape or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. Each first tip portion 34 has a pair of first rear end edges 34c which face the first yoke portion 31 and sandwich the first body portion 33. The second magnetic member 40 has a second yoke portion 41 which is an annular shape or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which continues from the second yoke portion 41, and a second tip portion 44 which continues from the second body portion 43. Furthermore, each second tip portion 44 has a pair of second rear edges 44c that face the second yoke portion 41 and sandwich the second body portion 43. Also, each first projection 30a is a portion that curves along the corresponding first rear edge 34c, and each second projection 40a is a portion that curves along the corresponding second rear edge 44c. As a result, the mechanical strength of the first tip portion 34 and the second tip portion 44 is improved and deformation can be prevented. Therefore, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0460] In the stator structure 1 according to Embodiment 14, at least two first protrusions 30a are curved along each of the pair of first rear edges 34c of one first tip 34. Also, at least two second protrusions 40a are curved along each of the pair of second rear edges 44c of one second tip 44. Furthermore, each of the two first protrusions 30a and each of the two second protrusions 40a are in contact with each other. This improves the mechanical strength of the first tip 34 and the second tip 44, and prevents deformation. Therefore, it is possible to obtain first teeth 32 and second teeth 42 with the designed shape, and to obtain a stator structure 1 with the designed detection accuracy.

[0461] In the manufacturing method of the stator structure 1 according to Embodiment 14, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which protrude from the first yoke portion 31 toward the center. Each first teeth portion 32 has a first body portion 33 which extends from the first yoke portion 31, and a first tip portion 34 which extends from the first body portion 33. Each first tip portion 34 has a pair of first rear edge portions 34c which are rear-end edges facing the corresponding first yoke portion 31 and are arranged on either side of the corresponding first body portion 33. The boundary between each first projection portion 30a and the first magnetic member 30 is at least one of the pair of first rear edge portions 34c. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which protrude from the second yoke portion 41 toward the center. Furthermore, each second tooth portion 42 has a second body portion 43 extending from the second yoke portion 41 and a second tip portion 44 extending from the second body portion 43. Each second tip portion 44 also has a pair of second rear edge 44c, which are the rear-end edges facing the corresponding second yoke portion 41 and are positioned on either side of the corresponding second body portion 43. The boundary between each second projection 40a and the second magnetic member 40 is at least one of the pair of second rear edge 44c. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, respectively, and prevents deformation. Thus, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0462] In the manufacturing method of the stator structure 1 according to Embodiment 14, in preparation step S01, a pair of first protrusions 30a are prepared, each formed at the boundary of a pair of first rear edges 34c of at least one first tip portion 34. Also, a pair of second protrusions 40a are prepared, each formed at the boundary of a pair of second rear edges 44c of at least one second tip portion 44. In arrangement step S02, the first magnetic member 30 and the second magnetic member 40 are arranged so that the pair of first protrusions 30a and the pair of second protrusions 40a face each other. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation. Therefore, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0463] Embodiment 15. The stator structure 1 in Embodiment 15 differs from the stator structure 1 in Embodiment 9 in that each support portion 70, the first magnetic member 30, and the second magnetic member 40 are integrally formed with respect to each other.

[0464] Figure 46 is a side view of the magnetic teeth portion 22 according to Embodiment 15. In Figure 46, the magnetic member 20 of Embodiment 15 shows a side view of the magnetic teeth portion 22 corresponding to the magnetic teeth portion 22 as seen from the line XXIX-XXIX in Figure 27. In Figure 46, a part of the magnetic yoke portion 21 is shown as a cross-section. The magnetic tip portion 24 in Embodiment 15 has a width greater than the width of the corresponding magnetic body portion 23.

[0465] Each support portion 70 is positioned on each of the magnetic tip edges 24a. Each support portion 70 is integrally formed with the first magnetic member 30 and the second magnetic member 40. Here, being integrally formed means that there are no seams between each support portion 70, the first magnetic member 30, and the second magnetic member 40.

[0466] Each support portion 70 is formed and positioned between the first magnetic member 30 and the second magnetic member 40 so as to connect the first tip edge 34a of the first magnetic member 30 with the corresponding second tip edge 44a of the second magnetic member 40. In other words, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70.

[0467] In this way, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by arranging the first magnetic member 30, the second magnetic member 40 and each support portion 70 in the desired positions.

[0468] The first magnetic member 30, the second magnetic member 40, and each support portion 70 are formed, for example, by curing a magnetic resin 20x. Figure 47 is a schematic diagram showing the magnetic resin 20x according to Embodiment 15.

[0469] The magnetic resin 20x is composed of a resin 20z containing at least a magnetic material 20y. The magnetic material 20y is in powder or granular form and is composed of a magnetic material such as a metal.

[0470] The resin 20z can be one that hardens by accelerating the crosslinking reaction from a fluid state. For example, the resin 20z may be one in which the crosslinking reaction is accelerated and hardens by temperature changes. Alternatively, the resin 20z may be one in which hardening occurs by adding, for example, an additive.

[0471] When curing the magnetic resin 20x into a desired shape, a well-known method can be used. For example, the magnetic resin 20x can be filled into a mold having a desired internal shape, and then cured.

[0472] Within the cured magnetic resin 20x, the contained magnetic material 20y maintains a state of contact with each other. Furthermore, the magnetic material 20y is also exposed on the surface of the cured magnetic resin 20x. As a result, the cured magnetic resin 20x as a whole possesses magnetism.

[0473] In this way, the first magnetic member 30, the second magnetic member 40, and each support part 70 can be formed in the desired shape by integral molding. However, this is not the only method, and the first magnetic member 30, the second magnetic member 40, and each support part 70 may be integrally formed by cutting or other processes on a block of hardened magnetic resin 20x to form the desired shape. Furthermore, not only a block of hardened magnetic resin 20x, but any block that possesses magnetism may be integrally formed by cutting or other processes on such a block to form the first magnetic member 30, the second magnetic member 40, and each support part 70 to form the desired shape.

[0474] The other configurations of the stator structure 1 according to Embodiment 15 are the same as those of the stator structure 1 according to Embodiment 9, so their description will be omitted.

[0475] Next, the method for manufacturing the stator structure 1 in Embodiment 15 will be described. The flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 15 is the same as the flowchart showing the method for manufacturing the stator structure 1 according to Embodiment 1, so we will continue the explanation using Figure 4.

[0476] <Preparation process> The worker prepares a first magnetic member 30, a second magnetic member 40, a non-magnetic material 50x, and 14 support parts 70 for the manufacture of the stator structure 1. The first magnetic member 30, the second magnetic member 40, and the 14 support parts 70 to be prepared are prepared in a state where the magnetic resin 20x has been cured and formed integrally into the desired shape. Each support part 70 is already formed and positioned between each first tip edge 34a and the corresponding second tip edge 44a.

[0477] <Placement process> Since the first magnetic member 30, the second magnetic member 40, and the 14 support parts 70, which are prepared in the preparation step, are formed as a single unit, the first magnetic member 30, the second magnetic member 40, and the 14 support parts 70 are each positioned in the desired location at the time of preparation. That is, in the arrangement step, at least the first magnetic member 30 and the second magnetic member 40 are connected via each support part 70.

[0478] In this way, once the first magnetic member 30, the second magnetic member 40, and each support part 70 are positioned in the desired locations, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined. The worker then places the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in this manner, into a mold (not shown).

[0479] Regarding the method for manufacturing the stator structure 1 according to Embodiment 15 described above, other components are the same as those for manufacturing the stator structure 1 according to Embodiment 9, so their description will be omitted.

[0480] In Embodiment 15, the 14 support portions 70 are composed of 14 first protrusions 30a arranged on the first tip edge 34a of each first tip portion 34. However, this is not the only configuration. There may be at least one support portion 70. That is, only one support portion 70 may be arranged on a single first tip edge 34a.

[0481] Furthermore, the 14 support portions 70 in Embodiment 15 are arranged on the first tip edge 34a of each first tip portion 34. However, it is not limited to this. One or more support portions 70 may be arranged anywhere between the first magnetic member 30 and the second magnetic member 40. For example, one or more support portions 70 may be arranged along the magnetic side edge 24b, the magnetic rear edge 24c of the magnetic tip portion 24, the magnetic body edge 23a of the magnetic body portion 23, and other edges of the magnetic member 20. Alternatively, they may be arranged in areas other than the edges of the magnetic member 20, i.e., in the area inward from the edges of the magnetic member 20. Even in such cases, the first magnetic member 30 and the second magnetic member 40 are connected via each support portion 70. Moreover, the relative positional relationship between the first magnetic member 30 and the second magnetic member 40 is determined by the arrangement of the first magnetic member 30, the second magnetic member 40, and each support portion 70 in the desired positions.

[0482] Furthermore, in Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support part 70 are made of hardened magnetic resin 20x. However, it is not limited to this. For example, after hardening the magnetic resin 20x, the resin 20z may be removed and the magnetic material 20y may be made only. For example, the hardened magnetic resin 20x may be placed in a high-temperature environment to make the resin 20z disappear. In this case, each magnetic material 20y is exposed to high temperature and comes into contact with each other so as to fuse together, and as a result, even after the resin 20z is removed, the desired shape as a whole can be maintained and the whole can be made magnetic.

[0483] In the stator structure 1 according to Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support part 70 are formed as a single unit. As a result, the first magnetic member 30 and the second magnetic member 40 are fixed to each other. Therefore, when viewed along the central axis L, misalignment between the first magnetic member 30 and the second magnetic member 40 can be more effectively prevented. Thus, when this stator structure 1 is used in a resolver, a resolver with high detection accuracy can be provided. Furthermore, this eliminates the need to position the first magnetic member 30, the second magnetic member 40, and each support part 70 during manufacturing. Therefore, the stator structure 1 can be obtained more easily.

[0484] In the stator structure 1 according to Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support portion 70 are formed as a single unit. As a result, the first magnetic member 30 and the second magnetic member 40 are fixed to each other. Therefore, when viewed along the central axis L, misalignment between the first magnetic member 30 and the second magnetic member 40 can be further prevented. Thus, when this stator structure 1 is used as a resolver, a resolver with high detection accuracy can be provided.

[0485] In the stator structure 1 according to Embodiment 15, the non-magnetic member 50 is a hardened non-magnetic material 50x placed between the first magnetic member 30 and the second magnetic member 40. As a result, the non-magnetic material 50x hardens in contact with the first magnetic member 30, the second magnetic member 40 and each support part 70, thereby more firmly fixing the integrally molded first magnetic member 30, the second magnetic member 40 and each support part 70. Therefore, when viewed along the central axis L, misalignment between the first magnetic member 30 and the second magnetic member 40 can be more effectively prevented. Thus, when this stator structure 1 is used as a resolver, a resolver with higher detection accuracy can be provided. Furthermore, this prevents plastic deformation of the first magnetic member 30 and the second magnetic member 40 due to the molding pressure P applied to the non-magnetic material 50x when it is filled between the first magnetic member 30 and the second magnetic member 40. Therefore, there is no need to lower the molding pressure P, and there is no need to select a highly fluid non-magnetic material 50x in order to lower the molding pressure P. Thus, plastic deformation of the first magnetic member 30 and the second magnetic member 40 can be prevented, and the choice of material for the non-magnetic material 50x can be increased.

[0486] In the stator structure 1 according to Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support portion 70 are formed by curing a resin 20z containing a magnetic material 20y. This allows for the formation of the first magnetic member 30, the second magnetic member 40, and each support portion 70, which are easily positioned in the desired locations, by integral molding using a mold made of the magnetic material 20y, or by machining such as cutting a block of the magnetic material 20y. Therefore, the manufacturing cost of the stator structure 1 can be reduced.

[0487] In the stator structure 1 according to Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support part 70 are formed by curing a resin 20z containing a magnetic material 20y, and then removing the resin 20z. The first magnetic member 30, the second magnetic member 40, and each support part 70 can be easily formed in the desired positions by integral molding using a mold with the magnetic material 20y, or by machining such as cutting a block of magnetic material 20y. Therefore, the manufacturing cost of the stator structure 1 can be reduced. In addition, by removing the resin 20z, the weight of the first magnetic member 30, the second magnetic member 40, and each support part 70 can be reduced. Therefore, the weight of the stator structure 1 can be reduced.

[0488] In the stator structure 1 according to Embodiment 15, each support portion 70 is formed to connect the edge of the first magnetic member 30 with the corresponding edge of the second magnetic member 40. This improves the mechanical strength of the first magnetic member 30 and the second magnetic member 40 and prevents deformation. Therefore, a stator structure 1 with the designed detection accuracy can be obtained.

[0489] In the stator structure 1 according to Embodiment 15, the first magnetic member 30 has a first yoke portion 31 which is an annular shape or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. The second magnetic member 40 has a second yoke portion 41 which is an annular shape or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which continues from the second yoke portion 41, and a second tip portion 44 which continues from the second body portion 43. Each support portion 70 is a portion formed to connect the first tip edge 34a which is the tip-side edge of the first tip portion 34, and the second tip edge 44a which is the tip-side edge of the corresponding second tip portion 44. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and better prevents deformation. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained. In addition, each support portion 70 faces the rotating body 90 arranged in the stator structure 1. Therefore, by using a stator structure 1 in which the support portion 70 is arranged at the tip of the magnetic tip portion 24 as a resolver, the detection accuracy of the resolver can be improved.

[0490] In the stator structure 1 according to Embodiment 15, the first magnetic member 30 has a first yoke portion 31 which is an annular shape or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. The second magnetic member 40 has a second yoke portion 41 which is an annular shape or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which continues from the second yoke portion 41, and a second tip portion 44 which continues from the second body portion 43. The first tip portion 34 has a pair of first side edge edges 34b which are a pair of edges that face each of the two adjacent first tip portions 34. Furthermore, the second tip portion 44 has a pair of second side edge edges 44b, which are a pair of edges facing each of the adjacent second tip portions 44. In addition, each support portion 70 is a portion formed to connect at least one of the pair of first side edge edges 34b to the corresponding second side edge edge 44b. This improves the mechanical strength of the first tip portion 34 and the second tip portion 44 and prevents deformation more effectively. Thus, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0491] In the stator structure 1 according to Embodiment 15, a support portion 70 is further provided, which is a portion formed to connect the other first side edge 34b of a pair of first side edges 34b that is opposite to one of the first side edges 34b, and the second side edge 43b corresponding to the other first side edge 34b. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation more effectively. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0492] In the stator structure 1 according to Embodiment 15, the first magnetic member 30 has a first yoke portion 31 which is an annular shape or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. The second magnetic member 40 has a second yoke portion 41 which is an annular shape or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which continues from the second yoke portion 41, and a second tip portion 44 which continues from the second body portion 43. The first tip portion 34 has a pair of first rear end edges 34c which face the corresponding first yoke portion 31 and sandwich the corresponding first body portion 33. Furthermore, the second tip portion 44 has a pair of second rear edges 44c that face the corresponding second yoke portion 41 and sandwich the corresponding second body portion 43. In addition, each support portion 70 is a part formed to connect one of the pair of first rear edges 34c to the corresponding second rear edge 44c. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44 and prevents deformation more effectively. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0493] In the stator structure 1 according to Embodiment 15, a support portion 70 is further provided, which is a portion formed to connect the other first rear edge 34c of a pair of first rear edges 34c that is opposite to one of the first rear edges 34c, and the second rear edge 44c that corresponds to the other first rear edge 34c. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation more effectively. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0494] In the stator structure 1 according to Embodiment 15, the first magnetic member 30 has a first yoke portion 31 which is an annular shape or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. Each first teeth portion 32 has a first body portion 33 which continues from the first yoke portion 31, and a first tip portion 34 which continues from the first body portion 33. Each first body portion 33 also has a pair of opposing first body edges 33a. The second magnetic member 40 has a second yoke portion 41 which is an annular shape or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each second teeth portion 42 has a second body portion 43 which continues from the second yoke portion 41, and a second tip portion 44 which continues from the second body portion 43. Each second body portion 43 also has a pair of opposing second body edges 43a. Furthermore, the edges of the first magnetic member 30 and the second magnetic member 40 to which each support portion 70 is connected are one of the pair of first body edges 33a and the corresponding second body edge 43a. This further improves the mechanical strength of the first body portion 33 and the second body portion 43, and prevents deformation more effectively. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0495] In the stator structure 1 according to Embodiment 15, a support portion 70 is further provided to connect one of the pair of first furring strips 33a to the other first furring strip 33a facing it, and to the corresponding second furring strip 43a. This further improves the mechanical strength of the first furring strip 33 and the second furring strip 43, and prevents deformation more effectively. Therefore, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0496] In the stator structure 1 according to Embodiment 15, each support portion 70 is formed to connect the portion of the first magnetic member 30 other than its edge with the corresponding portion of the second magnetic member 40 other than its edge. By appropriately positioning the support portions 70, the mechanical strength of the first magnetic member 30 and the second magnetic member 40 can be further improved, and deformation can be better prevented. Therefore, the first magnetic member 30 and the second magnetic member 40 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0497] In the stator structure 1 according to Embodiment 15, the first magnetic member 30 has a first yoke portion 31 that is annular or part of an annular shape, and a plurality of first teeth portions 32 that extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 has a second yoke portion 41 that is annular or part of an annular shape, and a plurality of second teeth portions 42 that extend from the second yoke portion 41 toward the center of the annular shape. Each support portion 70 is a part formed to connect the first teeth portion 32 and the second teeth portion 42. As a result, by arranging the support portion 70 at any position on the magnetic teeth portion 22, the mechanical strength of the first magnetic member 30 and the second magnetic member 40 can be further improved, and deformation can be further prevented. Therefore, the first teeth portion 32 and the second teeth portion 42 of the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained.

[0498] In the manufacturing method of the stator structure 1 according to Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support part 70, which are prepared in the preparation step S01, are formed as a single unit. As a result, the first magnetic member 30 and the second magnetic member 40 are prepared in a fixed state relative to each other. Therefore, misalignment between the first magnetic member 30 and the second magnetic member 40 when viewed along the central axis L can be further prevented. Thus, a stator structure 1 used in resolvers with high detection accuracy can be manufactured. Furthermore, this eliminates the need for the step of arranging the first magnetic member 30, the second magnetic member 40, and each support part 70 in desired positions. Therefore, the stator structure 1 can be manufactured more easily.

[0499] In the manufacturing method of the stator structure 1 according to Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support part 70 prepared in the preparation step S01 are formed by curing a resin 20z containing a magnetic material 20y. This makes it possible to easily form the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in the desired locations, by integral molding using a mold made of the magnetic material 20y, or by machining such as cutting a block of the magnetic material 20y. Therefore, the stator structure 1 can be manufactured while keeping manufacturing costs down.

[0500] In the manufacturing method of the stator structure 1 according to Embodiment 15, the first magnetic member 30, the second magnetic member 40, and each support part 70 prepared in the preparation step S01 are formed by curing a resin containing magnetic material 20y and then removing the resin. This makes it possible to easily form the first magnetic member 30, the second magnetic member 40, and each support part 70, which are positioned in the desired locations, by integral molding using a mold with magnetic material 20y, or by machining such as cutting a block of magnetic material 20y. Therefore, the stator structure 1 can be manufactured at a reduced manufacturing cost. Furthermore, this makes it possible to reduce the weight of the first magnetic member 30, the second magnetic member 40, and each support part 70 by the weight of the removed resin 20z. Therefore, a lightweight stator structure 1 can be manufactured.

[0501] In the manufacturing method of the stator structure 1 according to Embodiment 15, in preparation step S01, at least one support portion 70 is prepared to connect the edge of the first magnetic member 30 and the corresponding edge of the second magnetic member 40. This improves the mechanical strength of the first magnetic member 30 and the second magnetic member 40 and prevents deformation. Therefore, a stator structure 1 with the designed detection accuracy can be manufactured.

[0502] In the manufacturing method of the stator structure 1 according to Embodiment 15, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each first tooth portion 32 prepared in preparation step S01 has a first body portion 33 which is an extension of the first yoke portion 31, and a first tip portion 34 which is an extension of the first body portion 33. Each second tooth portion 42 has a second body portion 43 which is an extension of the second yoke portion 41, and a second tip portion 44 which is an extension of the second body portion 43. Furthermore, the edges of the first magnetic member 30 and the second magnetic member 40 connected by the support portion 70 are the first tip edge 34a, which is the tip-side edge of the first tip portion 34, and the second tip edge 44a, which is the tip-side edge of the second tip portion 44. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation more effectively. As a result, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and a stator structure 1 with the designed detection accuracy can be obtained. In addition, as a result, each support portion 70 faces the rotating body 90 arranged in the stator structure 1. Therefore, a stator structure 1 that can improve the detection accuracy of the resolver can be manufactured.

[0503] In the manufacturing method of the stator structure 1 according to Embodiment 15, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each first tooth portion 32 prepared in preparation step S01 has a first body portion 33 which is an extension of the first yoke portion 31, and a first tip portion (34) which is an extension of the first body portion 33. Each second tooth portion 42 has a second body portion 43 which is an extension of the second yoke portion 41, and a second tip portion 44 which is an extension of the second body portion 43. Furthermore, the first tip portion 34 prepared in preparation step S01 has a pair of first side edge edges 34b, which are a pair of edges facing each of the adjacent first tip portions 34. Similarly, the second tip portion 44 has a pair of second side edge edges 44b, which are a pair of edges facing each of the adjacent second tip portions 44. Moreover, the edge of the first magnetic member 30 and the edge of the second magnetic member 40 connected by the support portion 70 are at least one of the pair of first side edge edges 34b and a second side edge edge 44b corresponding to one of the first side edge edges 34b. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and better prevents deformation. Thus, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0504] In the manufacturing method of the stator structure 1 according to Embodiment 15, in preparation step S01, a support portion 70 is further prepared that connects the other first side edge 34b of a pair of first side edges 34b that is opposite to one of them, and the corresponding second side edge 44b. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation more effectively. As a result, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0505] In the manufacturing method of the stator structure 1 according to Embodiment 15, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each first tooth portion 32 prepared in preparation step S01 has a first body portion 33 which is an extension of the first yoke portion 31, and a first tip portion 34 which is an extension of the first body portion 33. Each second tooth portion 42 has a second body portion 43 which is an extension of the second yoke portion 41, and a second tip portion 44 which is an extension of the second body portion 43. Furthermore, the first tip portion 34 prepared in preparation step S01 has a pair of first rear edge edges 34c, which are the rear edge facing the first yoke portion 31 and are positioned on either side of the corresponding first body portion 33. Similarly, the second tip portion 44 has a pair of second rear edge edges 44c, which are the rear edge facing the second yoke portion 41 and are positioned on either side of the corresponding second body portion 43. Moreover, the edge of the first magnetic member 30 and the edge of the second magnetic member 40 connected by the support portion 70 are at least one of the pair of first rear edge edges 34c and a second rear edge 44c corresponding to one of the first rear edge edges 34c. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44 and better prevents deformation. Consequently, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0506] In the manufacturing method of the stator structure 1 according to Embodiment 15, in preparation step S01, a support portion 70 is further prepared that connects the other first rear end edge 34c of a pair of first rear end edges 34c that is opposite to one of them, and the corresponding second rear end edge 44c. This further improves the mechanical strength of the first tip portion 34 and the second tip portion 44, and prevents deformation more effectively. As a result, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0507] In the manufacturing method of the stator structure 1 according to Embodiment 15, the first magnetic member 30 prepared in preparation step S01 has a first yoke portion 31 which is annular or part of an annular shape, and a plurality of first teeth portions 32 which extend from the first yoke portion 31 toward the center of the annular shape. The second magnetic member 40 prepared in preparation step S01 has a second yoke portion 41 which is annular or part of an annular shape, and a plurality of second teeth portions 42 which extend from the second yoke portion 41 toward the center of the annular shape. Each first teeth portion 32 prepared in preparation step S01 has a first body portion 33 which is an annular shape, and a first tip portion 34 which is an annular shape. Each second teeth portion 42 has a second body portion 43 which is an annular shape, and a second tip portion 44 which is an annular shape. The first body portion 33 has a pair of opposing first rims 33a. Furthermore, the second body portion 43 has a pair of opposing second body rims 43a. Also, the edge of the first magnetic member 30 and the edge of the second magnetic member 40 connected by the support portion 70 are at least one of the pair of first body rims 33a and the corresponding second body rim 43a. This further improves the mechanical strength of the first body portion 33 and the second body portion 43 and prevents deformation more effectively. Thus, the first teeth portion 32 and the second teeth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0508] In the manufacturing method of the stator structure 1 according to Embodiment 15, in preparation step S01, a support portion 70 is further prepared that connects the other first furring strip 33a, which is opposite to one of the pair of first furring strips 33a, to the corresponding second furring strip 43a. This further improves the mechanical strength of the first body portion 33 and the second body portion 43, and prevents deformation more effectively. Therefore, the first tooth portion 32 and the second tooth portion 42 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0509] In the manufacturing method of the stator structure 1 according to Embodiment 15, in preparation step S01, at least one support portion 70 is prepared to connect the portion of the first magnetic member 30 other than its edge with the corresponding portion of the second magnetic member 40 other than its edge. This allows the support portions 70 to be positioned appropriately, further improving the mechanical strength of the first magnetic member 30 and the second magnetic member 40 and preventing deformation. Therefore, the first magnetic member 30 and the second magnetic member 40 with the designed shape can be obtained, and the stator structure 1 with the designed detection accuracy can be manufactured.

[0510] In the manufacturing method of the stator structure 1 acco...

Claims

1. A first magnetic member (30) that is ring-shaped or part of a ring, A second magnetic member (40) that is ring-shaped or part of a ring, Non-magnetic member (50) and One or more support parts (70), Equipped with, The first magnetic member (30) and the second magnetic member (40) are arranged facing each other. The non-magnetic member (50) and each of the support parts (70) are arranged between the first magnetic member (30) and the second magnetic member (40). The first magnetic member (30) and the second magnetic member (40) are connected via the respective support portions (70). Stator structure (1).

2. The non-magnetic member (50) is in contact with the first magnetic member (30), the second magnetic member (40), and each of the support portions (70). The stator structure (1) according to claim 1.

3. The non-magnetic member (50) is a hardened non-magnetic material (50x) disposed between the first magnetic member (30) and the second magnetic member (40). The stator structure (1) according to claim 2.

4. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the support portions (70) is positioned at least between the first tooth portion (32) and the corresponding second tooth portion (42). The stator structure (1) according to claim 2.

5. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the support portions (70) is positioned at least between the first tooth portion (32) and the corresponding second tooth portion (42). The stator structure (1) according to claim 3.

6. Each of the support parts (70) is a spacing member (71) which is a separate member from the first magnetic member (30) and the second magnetic member (40). A stator structure (1) according to any one of claims 2 to 5.

7. Each of the first magnetic member (30) and the second magnetic member (40) on which each of the support portions (70) is arranged is provided with a holding mechanism (30h, 40h), Each of the holding mechanisms (30h, 40h) can hold the corresponding spacing member (71), Each of the spacing holding members (71) held by each of the holding mechanisms (30h, 40h) is positioned between the first magnetic member (30) and the second magnetic member (40). The stator structure (1) according to claim 6.

8. Each of the holding mechanisms (30h, 40h) comprises one or more first holding mechanisms (30h) which are through holes formed in the first magnetic member (30), and one or more second holding mechanisms (40h) which are through holes formed in the second magnetic member (40). Each of the first holding mechanisms (30h) and the corresponding second holding mechanism (40h) are facing each other. The spacing members (71) corresponding to the opposing first holding mechanism (30h) and the second holding mechanism (40h) are inserted, so that each spacing member (71) is positioned between the first magnetic member (30) and the second magnetic member (40). The stator structure (1) according to claim 7.

9. Each of the aforementioned support parts (70) A first protrusion (30a) formed on the first magnetic member (30) and protruding toward the second magnetic member (40), A second protrusion (40a) formed on the second magnetic member (40) and protruding toward the first magnetic member (30), It is composed of, Each of the first protrusions (30a) and the corresponding second protrusions (40a) are facing each other and interlocking. A stator structure (1) according to any one of claims 2 to 5.

10. Each of the first side surfaces (30b) of the first protrusion (30a) that rises from the surface of the first magnetic member (30) and the corresponding second side surface (40b) of the second protrusion (40a) that rises from the surface of the second magnetic member (40) are in contact with and interlocked with each other. The stator structure (1) according to claim 9.

11. Each of the first protrusions (30a) is one or more convex ridges having the first side surface (30b) as its side surface. Each of the second protrusions (40a) is one or more convex ridges having the second side surface (40b) as its side surface. Each of the first protrusions (30a) and the corresponding second protrusions (40a) are interlocked with each other. The stator structure (1) according to claim 10.

12. Each of the support portions (70) is a first projection (30a) formed on at least the first magnetic member (30) and projecting toward the second magnetic member (40), The tip of each of the first protrusions (30a), which are the support portion (70), is in contact with the second magnetic member (40). A stator structure (1) according to any one of claims 2 to 5.

13. The system comprises two or more of the aforementioned support parts (70), At least one of the support portions (70) is a second projection (40a) formed on the second magnetic member (40) that protrudes toward the first magnetic member (30), The tip of each of the second protrusions (40a), which are each of the support portions (70), is in contact with the first magnetic member (30). The stator structure (1) according to claim 12.

14. Each support portion (70) is composed of a first projection (30a) formed on the first magnetic member (30) that protrudes toward the second magnetic member (40), and a second projection (40a) formed on the second magnetic member (40) that protrudes toward the first magnetic member (30). The tip of each first projection (30a) and the corresponding tip of the second projection (40a) are in contact with each other and facing each other. A stator structure (1) according to any one of claims 2 to 5.

15. The first magnetic member (30) has at least one first cut portion (30c) formed thereon. Each of the first protrusions (30a) is surrounded by the corresponding first cut portion (30c) and is a portion that extends continuously from the first magnetic member (30), Each of the first protrusions (30a) is bent and protrudes toward the second magnetic member (40). The stator structure (1) according to claim 12.

16. The first magnetic member (30) has at least one first cut portion (30c) formed thereon. Each of the first protrusions (30a) is surrounded by the corresponding first cut portion (30c) and is a portion that extends continuously from the first magnetic member (30), Each of the first protrusions (30a) is bent and protrudes toward the second magnetic member (40), The second magnetic member (40) has at least one second cut portion (40c) formed thereon. Each of the second protrusions (40a) is surrounded by the corresponding second cut portion (40c) and is a portion that extends continuously from the second magnetic member (40), Each of the second protrusions (40a) is bent and protrudes toward the first magnetic member (30). The stator structure (1) according to claim 13.

17. The first magnetic member (30) has at least one first cut portion (30c) formed thereon. Each of the first protrusions (30a) is surrounded by the corresponding first cut portion (30c) and is a portion that extends continuously from the first magnetic member (30), Each of the first protrusions (30a) is bent and protrudes toward the second magnetic member (40), The second magnetic member (40) has at least one second cut portion (40c) formed thereon. Each of the second protrusions (40a) is surrounded by the corresponding second cut portion (40c) and is a portion that extends continuously from the second magnetic member (40), Each of the second protrusions (40a) is bent and protrudes toward the first magnetic member (30). The stator structure (1) according to claim 14.

18. Each of the support portions (70) is a first projection (30a) formed on at least the first magnetic member (30) and projecting toward the second magnetic member (40), The tip of each of the first protrusions (30a), which are each of the support portions (70), is in contact with the second magnetic member (40). Each of the first protrusions (30a) is a portion that curves and extends along the corresponding edge of the first magnetic member (30). The stator structure (1) according to claim 2 or claim 3.

19. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first body sections (33) has a pair of opposing first body edges (33a), Each of the first protrusions (30a) is a portion that is curved along the corresponding first furring strip (33a). The stator structure (1) according to claim 18.

20. At least two of the first protrusions (30a) are curved along each of the pair of first purlins (33a) that one of the first body portions (33) has. The stator structure (1) according to claim 19.

21. The system comprises two or more of the aforementioned support parts (70), At least one of the support portions (70) is a first projection (30a) formed on the first magnetic member (30) and projecting toward the second magnetic member (40), The tip of each of the first protrusions (30a), which are each of the support portions (70), is in contact with the second magnetic member (40). At least one of the support portions (70) is a second projection (40a) formed on the second magnetic member (40) that protrudes toward the first magnetic member (30), The tip of each of the second protrusions (40a), which are each of the support portions (70), is in contact with the first magnetic member (30). Each of the first protrusions (30a) extends from the first magnetic member (30) and is a portion that curves along the corresponding edge of the first magnetic member (30). Each of the second protrusions (40a) extends from the second magnetic member (40) and is a portion that curves along the corresponding edge of the second magnetic member (40). The stator structure (1) according to claim 2 or claim 3.

22. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first body sections (33) has a pair of opposing first body edges (33a), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the second body sections (43) has a pair of opposing second body edges (43a), Each of the first protrusions (30a) is a portion that is curved along the corresponding first furring strip (33a), Each of the second protrusions (40a) is a portion that is curved along the corresponding second furring strip (43a). The stator structure (1) according to claim 21.

23. The first body portion (33) on which the first projection (30a) is located and the second body portion (43) on which the second projection (40a) is located are arranged facing each other. The first furring strip (33a) along which the first protrusion (30a) is curved and the second furring strip (43a) along which the second protrusion (40a) is curved are not facing each other. The stator structure (1) according to claim 22.

24. Each support portion (70) is composed of a first projection (30a) formed on the first magnetic member (30) that protrudes toward the second magnetic member (40), and a second projection (40a) formed on the second magnetic member (40) that protrudes toward the first magnetic member (30). The tip of each of the first protrusions (30a) and the corresponding tip of the second protrusion (40a) are in contact with each other and facing each other. Each of the first protrusions (30a) extends from the first magnetic member (30) and is a portion that curves along the corresponding edge of the first magnetic member (30). Each of the second protrusions (40a) extends from the second magnetic member (40) and is a portion that curves along the corresponding edge of the second magnetic member (40). The stator structure (1) according to claim 2 or claim 3.

25. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first body sections (33) has a pair of opposing first body edges (33a), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the second body sections (43) has a pair of opposing second body edges (43a), Each of the first protrusions (30a) is a portion that is curved along the corresponding first furring strip (33a), Each of the second protrusions (40a) is a portion that is curved along the corresponding second furring strip (43a). The stator structure (1) according to claim 24.

26. At least two of the first protrusions (30a) are curved along each of the pair of first purlins (33a) of one of the first body sections (33), At least two of the second protrusions (40a) are curved along each of the pair of second purlins (43a) of one of the second body sections (43), Each of the two first protrusions (30a) and each of the two second protrusions (40a) are in contact with each other and facing each other. The stator structure (1) according to claim 25.

27. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a first tip edge (34a) which is the tip edge extending from the first yoke portion (31), Each of the first protrusions (30a) is a portion that is curved along the corresponding first tip edge (34a). The stator structure (1) according to claim 18.

28. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a first tip edge (34a) which is the tip edge extending from the first yoke portion (31), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the second tip portions (44) has a second tip edge (44a) which is the tip edge extending from the second yoke portion (41), Each of the first protrusions (30a) is a portion that is curved along the corresponding first tip edge (34a), Each of the second protrusions (40a) is a portion that is curved along the corresponding second tip edge (44a). The stator structure (1) according to claim 21.

29. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a pair of first side edges (34b) that face each of the adjacent first tip portions (34), Each of the first protrusions (30a) is a portion that curves along the corresponding first side edge (34b). The stator structure (1) according to claim 18.

30. At least two of the first protrusions (30a) are curved along each of the pair of first side edges (34b) of one of the first tip portions (34). The stator structure (1) according to claim 29.

31. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a pair of first side edges (34b) that face each of the adjacent first tip portions (34), Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the second tip portions (44) has a pair of second side edges (44b) that face each of the adjacent second tip portions (44), Each of the first protrusions (30a) is a portion that is curved along the corresponding first side edge (34b), Each of the second protrusions (40a) is a portion that curves along the corresponding second side edge (44b). The stator structure (1) according to claim 21.

32. The first tip portion (34) on which the first projection (30a) is located and the second tip portion (44) on which the second projection (40a) is located are arranged facing each other. The first side edge (34b) along which the first projection (30a) is curved and the second side edge (44b) along which the second projection (40a) is curved are not facing each other. The stator structure (1) according to claim 31.

33. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a pair of first rear end edges (34c) that face the first yoke portion (31) and sandwich the first body portion (33), Each of the first protrusions (30a) is a portion that curves along the corresponding first rear edge (34c). The stator structure (1) according to claim 18.

34. At least two of the first protrusions (30a) are curved along each of the pair of first rear edges (34c) of one of the first tip portions (34). The stator structure (1) according to claim 33.

35. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a pair of first rear end edges (34c) that face the first yoke portion (31) and sandwich the first body portion (33), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the first tip portions (34) has a pair of second rear edges (44c) that face the second yoke portion (41) and sandwich the second body portion (43), Each of the first protrusions (30a) is a portion that is curved along the corresponding first rear edge (34c), Each of the second protrusions (40a) is a portion that curves along the corresponding second rear edge (44c). The stator structure (1) according to claim 21.

36. The first tip portion (34) on which the first projection (30a) is located and the second tip portion (44) on which the second projection (40a) is located are arranged facing each other. The first rear edge (34c) along which the first projection (30a) is curved and the second rear edge (44c) along which the second projection (40a) is curved are not facing each other. The stator structure (1) according to claim 35.

37. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a first tip edge (34a) which is the tip edge extending from the first yoke portion (31), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the second tip portions (44) has a second tip edge (44a) which is the tip edge extending from the second yoke portion (41), Each of the first protrusions (30a) is a portion that is curved along the corresponding first tip edge (34a), Each of the second protrusions (40a) is a portion that is curved along the corresponding second tip edge (44a). The stator structure (1) according to claim 24.

38. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a pair of first side edges (34b) that face each of the adjacent first tip portions (34), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the second tip portions (44) has a pair of second side edges (44b) that face each of the adjacent second tip portions (44), Each of the first protrusions (30a) is a portion that is curved along the corresponding first side edge (34b), Each of the second protrusions (40a) is a portion that curves along the corresponding second side edge (44b). The stator structure (1) according to claim 24.

39. At least two of the first protrusions (30a) are curved along each of the pair of first side edges (34b) of one of the first tip portions (34), At least two of the second protrusions (40a) are curved along each of the pair of second side edges (44b) of one of the second tip portions (44), Each of the two first protrusions (30a) and each of the two second protrusions (40a) are in contact with each other and facing each other. The stator structure (1) according to claim 38.

40. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first tip portions (34) has a pair of first rear end edges (34c) that face the first yoke portion (31) and sandwich the first body portion (33), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each of the second tip portions (44) has a pair of second rear edges (44c) that face the second yoke portion (41) and sandwich the second body portion (43), Each of the first protrusions (30a) is a portion that is curved along the corresponding first rear edge (34c), Each of the second protrusions (40a) is a portion that curves along the corresponding second rear edge (44c). The stator structure (1) according to claim 24.

41. At least two of the first protrusions (30a) are curved along each of the pair of first rear edges (34c) of one of the first tip portions (34), At least two of the second protrusions (40a) are curved along each of the pair of second rear edges (44c) of one of the second tip portions (44), Each of the two first protrusions (30a) and each of the two second protrusions (40a) are in contact with each other and facing each other. The stator structure (1) according to claim 40.

42. The first magnetic member (30), the second magnetic member (40), and each of the support portions (70) are formed as a single unit. The stator structure (1) according to claim 2.

43. The non-magnetic member (50) is a hardened non-magnetic material (50x) disposed between the first magnetic member (30) and the second magnetic member (40). The stator structure (1) according to claim 42.

44. The first magnetic member (30), the second magnetic member (40), and each of the support parts (70) are formed by curing a resin (20z) containing a magnetic material (20y). The stator structure (1) according to claim 42.

45. The first magnetic member (30), the second magnetic member (40), and each of the support parts (70) are formed by curing a resin (20z) containing a magnetic material (20y). The stator structure (1) according to claim 43.

46. The first magnetic member (30), the second magnetic member (40), and each of the support members (70) are formed by curing a resin (20z) containing a magnetic material (20y), and then removing the resin (20z). The stator structure (1) according to claim 42.

47. The first magnetic member (30), the second magnetic member (40), and each of the support members (70) are formed by curing a resin (20z) containing a magnetic material (20y), and then removing the resin (20z). The stator structure (1) according to claim 43.

48. Each of the support portions (70) is a portion formed to connect the edge of the first magnetic member (30) with the corresponding edge of the second magnetic member (40). A stator structure (1) according to any one of claims 42 to 47.

49. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), Each support portion (70) is a portion formed to connect the first tip edge (34a), which is the tip edge of the first tip portion (34), and the corresponding second tip edge (44a), which is the tip edge of the second tip portion (44). The stator structure (1) according to claim 48.

50. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), The first tip portion (34) has a pair of first side edges (34b) which are a pair of edges facing each of the adjacent first tip portions (34), The second tip portion (44) has a pair of second side edge edges (44b) which are a pair of edges that face each of the adjacent second tip portions (44), Each support portion (70) is a portion formed to connect at least one of the pair of first side edges (34b) with the corresponding second side edge (44b). The stator structure (1) according to claim 48.

51. The support portion (70) is further formed to connect the other first side edge (34b) of a pair of first side edges (34b) that is opposite to one of the first side edges (34b), and the second side edge (43b) that corresponds to the other first side edge (34b), The stator structure (1) according to claim 50.

52. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth (42) has a second body (43) that extends from the second yoke (41) and a second tip (44) that extends from the second body (43), The first tip portion (34) has a pair of first rear end edges (34c) that face the corresponding first yoke portion (31) and sandwich the corresponding first body portion (33), The second tip portion (44) has a pair of second rear edges (44c) that face the corresponding second yoke portion (41) and sandwich the corresponding second body portion (43), Each support portion (70) is a portion formed to connect one of the pair of first rear edges (34c) to the corresponding second rear edge (44c). The stator structure (1) according to claim 48.

53. The device further comprises a support portion (70) formed to connect the other first rear edge (34c) of a pair of first rear edges (34c) that is opposite to one of the first rear edges (34c), and the second rear edge (44c) that corresponds to the other first rear edge (34c), The stator structure (1) according to claim 52.

54. The first magnetic member (30) has a first yoke portion (31) that is an annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. Each of the first teeth (32) has a first body portion (33) that extends from the first yoke portion (31) and a first tip portion (34) that extends from the first body portion (33), Each of the first body sections (33) has a pair of opposing first body edges (33a), The second magnetic member (40) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the second teeth portions (42) has a second body portion (43) that extends from the second yoke portion (41), and a second tip portion (44) that extends from the second body portion (43), Each of the second body sections (43) has a pair of opposing second body edges (43a), The edge of the first magnetic member (30) to which each support portion (70) is connected, and the edge of the second magnetic member (40), are one of the pair of first furring strips (33a) and the corresponding second furring strip (43a). The stator structure (1) according to claim 48.

55. The support portion (70) is further formed to connect one of the pair of first furring strips (33a) with the other first furring strip (33a) that is facing it, and the corresponding second furring strip (43a). The stator structure (1) according to claim 54.

56. Each of the support portions (70) is formed to connect the portion of the first magnetic member (30) other than its edge with the corresponding portion of the second magnetic member (40) other than its edge. A stator structure (1) according to any one of claims 42 to 47.

57. The first magnetic member (30) has a first yoke portion (31) that is an annular shape or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. The second magnetic member (40) has a second yoke portion (41) that is an annular shape or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the support portions (70) is a portion formed to connect the first tooth portion (32) and the second tooth portion (42). The stator structure (1) according to claim 56.

58. Preparation step (S01) involves preparing a first magnetic member (30), a second magnetic member (40), a non-magnetic material (50x), and one or more support parts (70). Arrangement step (S02) involves arranging the first magnetic member (30) and the second magnetic member (40) so that they are facing each other, and each of the support portions (70) is positioned between the first magnetic member (30) and the second magnetic member (40), and then arranging the non-magnetic material (50x) between the first magnetic member (30) and the second magnetic member (40), A curing step (S03) in which the non-magnetic material (50x) is cured to form a non-magnetic member (50), Equipped with, In the arrangement step (S02), at least the first magnetic member (30) and the second magnetic member (40) are connected via the respective support portions (70). A method for manufacturing a stator structure (1).

59. In the preparation step (S01), a spacing member (71) is prepared as each of the support parts (70). The first magnetic member (30) and the second magnetic member (40) prepared in the preparation step (S01) are each formed with a holding mechanism (30h, 40h) for holding the respective support portion (70). In the arrangement step (S02), each of the spacing holding members (71) is held by the holding mechanisms (30h, 40h) formed on the corresponding first magnetic member (30) and the second magnetic member (40). A method for manufacturing the stator structure (1) according to claim 58.

60. Each of the support portions (70) is arranged on the first magnetic member (30) prepared in the preparation step (S01). Each of the support portions (70) prepared in the preparation step (S01) is a first protruding portion (30a) that protrudes from the surface of the first magnetic member (30), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each support portion (70) is in contact with the second magnetic member (40). A method for manufacturing the stator structure (1) according to claim 58.

61. In the preparation step (S01), two or more of the support parts (70) are prepared. At least one of the support portion (70) prepared in the preparation step (S01) is a second projection (40a) which is a portion that protrudes in a direction perpendicular to the surface of the second magnetic member (40), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each of the second protrusions (40a) is in contact with the first magnetic member (30). A method for manufacturing the stator structure (1) according to claim 60.

62. Each of the support portions (70) is arranged on the first magnetic member (30) prepared in the preparation step (S01). Each of the support portions (70) prepared in the preparation step (S01) is a first projection (30a) that extends from the first magnetic member (30) and is curved along a direction perpendicular to the surface of the first magnetic member (30), Each of the first protrusions (30a) is a portion that is bent and protrudes from the portion surrounded by the first cut portion (30c) formed on the first magnetic member (30). In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each support portion (70) is in contact with the second magnetic member (40). A method for manufacturing the stator structure (1) according to claim 58.

63. In the preparation step (S01), two or more of the support parts (70) are prepared. At least one of the support portion (70) prepared in the preparation step (S01) is a second projection (40a) that extends from the second magnetic member (40) and is bent along a direction perpendicular to the surface of the second magnetic member (40), Each of the second protrusions (40a) is a portion that is bent and protrudes from the portion surrounded by the second cut portion (40c) formed on the second magnetic member (40). In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each of the second protrusions (40a) is in contact with the first magnetic member (30). A method for manufacturing the stator structure (1) according to claim 62.

64. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. In the state in which each support portion (70) is positioned between the first magnetic member (30) and the second magnetic member (40) in the arrangement step (S02), each support portion (70) is positioned at least between the first tooth portion (32) and the corresponding second tooth portion (42). A method for manufacturing the stator structure (1) according to any one of claims 58 to 63.

65. Each of the support portions (70) is arranged on the first magnetic member (30) prepared in the preparation step (S01). Each of the support portions (70) prepared in the preparation step (S01) is a first projection (30a) that extends from the first magnetic member (30) and is curved along a direction perpendicular to the surface of the first magnetic member (30), The boundary between the first magnetic member (30) and each of the first protrusions (30a) is the edge of the first magnetic member (30), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each support portion (70) is in contact with the second magnetic member (40). A method for manufacturing the stator structure (1) according to claim 58.

66. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), Each of the first body sections (33) has a pair of opposing first body edges (33a), The boundary between each of the first protrusions (30a) and the first magnetic member (30) is at least one of the pair of first furring strips (33a). A method for manufacturing the stator structure (1) according to claim 65.

67. In the preparation step (S01), two or more of the support parts (70) are prepared. The at least two support portions (70) prepared in the preparation step (S01) are prepared as a pair of first protrusions (30a) that are bent along each of the pair of first purlins (33a) that one of the first body portions (33) has. A method for manufacturing the stator structure (1) according to claim 66.

68. In the preparation step (S01), two or more of the support parts (70) are prepared. The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth portions (42) has a second body portion (43) extending from the second yoke portion (41) and a second tip portion (44) extending from the second body portion (43), Each of the second body sections (43) has a pair of opposing second body edges (43a), At least one of the support portions (70) prepared in the preparation step (S01) is a second projection (40a) that extends from the second magnetic member (40) and is bent along a direction perpendicular to the surface of the second magnetic member (40), The boundary between each of the second protrusions (40a) and the second magnetic member (40) is at least one of the pair of second furring strips (43a), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each of the second protrusions (40a) is in contact with the first magnetic member (30). A method for manufacturing the stator structure (1) according to claim 66.

69. In the arrangement step (S02), the first tooth portion (32) having each of the first protrusions (30a) and the second tooth portion (42) having each of the second protrusions (40a) are arranged facing each other. A method for manufacturing the stator structure (1) according to claim 68.

70. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), The boundary between each of the first protrusions (30a) and the first magnetic member (30) is the first tip edge (34a), which is the tip edge of the corresponding first tip portion (34). A method for manufacturing the stator structure (1) according to claim 65.

71. In the preparation step (S01), two or more of the support parts (70) are prepared. The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth (42) has a second body (43) extending from the second yoke (41) and a second tip (44) extending from the second body (43). At least one of the support portions (70) prepared in the preparation step (S01) is a second projection (40a) that extends from the second magnetic member (40) and is bent along a direction perpendicular to the surface of the second magnetic member (40), The boundary between each of the second protrusions (40a) and the second magnetic member (40) is the second tip edge (44a), which is the tip edge of the second tip portion (44). In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each of the second protrusions (40a) is in contact with the first magnetic member (30). A method for manufacturing the stator structure (1) according to claim 70.

72. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), Each of the first tip portions (34) prepared in the preparation step (S01) has a pair of first side edge edges (34b) which are a pair of edges facing each of the adjacent first tip portions (34), The boundary between each of the first protrusions (30a) and the first magnetic member (30) is at least one of the corresponding pair of first side edges (34b). A method for manufacturing the stator structure (1) according to claim 65.

73. In the preparation step (S01), two or more of the support parts (70) are prepared. In the preparation step (S01), each of the pair of first protrusions (30a) that are bent along each of the pair of first side edges (34b) of one of the first tip portions (34) is prepared as the support portion (70). A method for manufacturing the stator structure (1) according to claim 72.

74. In the preparation step (S01), two or more of the support parts (70) are prepared. The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth portions (42) has a second body portion (43) extending from the second yoke portion (41) and a second tip portion (44) extending from the second body portion (43), Each of the second tip portions (44) has a pair of second side edges (44b) which are a pair of edges facing each of the adjacent second tip portions (44), At least one of the support portions (70) prepared in the preparation step (S01) is a second projection (40a) that extends from the second magnetic member (40) and is bent along a direction perpendicular to the surface of the second magnetic member (40), The boundary between each of the second protrusions (40a) and the second magnetic member (40) is the second side edge (44b), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each of the second protrusions (40a) is in contact with the first magnetic member (30). A method for manufacturing the stator structure (1) according to claim 72.

75. In the arrangement step (S02), the first tooth portion (32) having each of the first protrusions (30a) and the second tooth portion (42) having each of the second protrusions (40a) are arranged facing each other. A method for manufacturing the stator structure (1) according to claim 74.

76. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), Each of the first tip portions (34) prepared in the preparation step (S01) has a pair of first rear end edges (34c) which are rear end edges facing the corresponding first yoke portion (31) and are arranged on either side of the corresponding first body portion (33). The boundary between each of the first protrusions (30a) and the first magnetic member (30) is at least one of the corresponding pair of first rear edges (34c). A method for manufacturing the stator structure (1) according to claim 65.

77. In the preparation step (S01), two or more of the support parts (70) are prepared. In the preparation step (S01), each of the pair of first protrusions (30a) that are bent along each of the pair of first rear edges (34c) of one of the first tip portions (34) is prepared as the support portion (70). A method for manufacturing the stator structure (1) according to claim 76.

78. In the preparation step (S01), two or more of the support parts (70) are prepared. The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth portions (42) has a second body portion (43) extending from the second yoke portion (41) and a second tip portion (44) extending from the second body portion (43), Each of the second tip portions (44) has a pair of second rear edge portions (44c) which are rear edge portions facing the corresponding second yoke portion (41) and are positioned on either side of the corresponding second body portion (43). At least one of the support portions (70) prepared in the preparation step (S01) is a second projection (40a) that extends from the second magnetic member (40) and is bent along a direction perpendicular to the surface of the second magnetic member (40), The boundary between each of the second protrusions (40a) and the second magnetic member (40) is at least one of the pair of second rear edges (44c), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each of the second protrusions (40a) is in contact with the first magnetic member (30). A method for manufacturing the stator structure (1) according to claim 76.

79. In the arrangement step (S02), the first tooth portion (32) having each of the first protrusions (30a) and the second tooth portion (42) having each of the second protrusions (40a) are arranged facing each other. A method for manufacturing the stator structure (1) according to claim 78.

80. The first magnetic member (30), the second magnetic member (40), and each of the support parts (70) prepared in the preparation step (S01) are formed and prepared as a single unit. A method for manufacturing the stator structure (1) according to claim 58.

81. The first magnetic member (30), the second magnetic member (40), and each of the support parts (70) prepared in the preparation step (S01) are formed by curing a resin (20z) containing a magnetic material (20y). A method for manufacturing the stator structure (1) according to claim 80.

82. The first magnetic member (30), the second magnetic member (40), and each of the support parts (70) prepared in the preparation step (S01) are formed by curing a resin (20z) containing a magnetic material (20y) and then removing the resin (20z). A method for manufacturing the stator structure (1) according to claim 80.

83. In the preparation step (S01), at least one of the support parts (70) is prepared to connect the edge of the first magnetic member (30) and the corresponding edge of the second magnetic member (40). A method for manufacturing the stator structure (1) according to claim 81 or claim 82.

84. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape, The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the first teeth (32) prepared in the preparation step (S01) has a first body (33) that extends from the first yoke (31) and a first tip (34) that extends from the first body (33), Each of the second teeth portions (42) has a second body portion (43) that extends from the second yoke portion (41), and a second tip portion (44) that extends from the second body portion (43), The edge of the first magnetic member (30) and the edge of the second magnetic member (40) connected by the support portion (70) are the first tip edge (34a), which is the tip-side edge of the first tip portion (34), and the second tip edge (44a), which is the tip-side edge of the second tip portion (44). A method for manufacturing the stator structure (1) according to claim 83.

85. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape, The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the first teeth (32) prepared in the preparation step (S01) has a first body (33) that extends from the first yoke (31) and a first tip (34) that extends from the first body (33), Each of the second teeth portions (42) has a second body portion (43) that extends from the second yoke portion (41), and a second tip portion (44) that extends from the second body portion (43), The first tip portion (34) prepared in the preparation step (S01) has a pair of first side edge edges (34b) which are a pair of edges facing each of the adjacent first tip portions (34), The second tip portion (44) has a pair of second side edge edges (44b) which are a pair of edges that face each of the adjacent second tip portions (44), The edge of the first magnetic member (30) and the edge of the second magnetic member (40) connected at the support portion (70) are at least one of the pair of first side edges (34b) and the second side edge (44b) corresponding to one of the first side edges (34b). A method for manufacturing the stator structure (1) according to claim 83.

86. In the preparation step (S01), the support portion (70) is further prepared to connect the other first side edge (34b) opposite to one of the pair of first side edges (34b) with the corresponding second side edge (44b). A method for manufacturing the stator structure (1) according to claim 85.

87. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape, The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the first teeth (32) prepared in the preparation step (S01) has a first body (33) that extends from the first yoke (31) and a first tip (34) that extends from the first body (33), Each of the second teeth portions (42) has a second body portion (43) that extends from the second yoke portion (41), and a second tip portion (44) that extends from the second body portion (43), The first tip portion (34) prepared in the preparation step (S01) has a pair of first rear end edges (34c) which are rear end edges facing the first yoke portion (31) and are arranged on either side of the corresponding first body portion (33), The second tip portion (44) has a pair of second rear end edges (44c) which are rear end edges facing the second yoke portion (41) and are arranged on either side of the corresponding second body portion (43), The edge of the first magnetic member (30) and the edge of the second magnetic member (40) connected at the support portion (70) are at least one of the pair of first rear edge edges (34c) and the second rear edge (44c) corresponding to one of the first rear edge edges (34c). A method for manufacturing the stator structure (1) according to claim 83.

88. In the preparation step (S01), the support portion (70) is further prepared to connect the other first rear edge (34c) of the pair of first rear edges (34c) that is opposite to one of the first rear edges (34c) with the corresponding second rear edge (44c). A method for manufacturing the stator structure (1) according to claim 87.

89. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape, The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. Each of the first teeth (32) prepared in the preparation step (S01) has a first body (33) that extends from the first yoke (31) and a first tip (34) that extends from the first body (33), Each of the second teeth portions (42) has a second body portion (43) that extends from the second yoke portion (41), and a second tip portion (44) that extends from the second body portion (43), The first body portion (33) has a pair of opposing first body edges (33a), The second body portion (43) has a pair of opposing second body edges (43a), The edge of the first magnetic member (30) and the edge of the second magnetic member (40) connected at the support portion (70) are at least one of the pair of first furring strips (33a) and the corresponding second furring strip (43a). A method for manufacturing the stator structure (1) according to claim 83.

90. In the preparation step (S01), the support portion (70) is further prepared to connect the other first furring strip (33a) that is opposite to one of the pair of first furring strips (33a) with the corresponding second furring strip (43a). A method for manufacturing the stator structure (1) according to claim 89.

91. In the preparation step (S01), at least one support portion (70) is prepared to connect the portion of the first magnetic member (30) other than its edge with the corresponding portion of the second magnetic member (40) other than its edge. A method for manufacturing the stator structure (1) according to claim 81 or claim 82.

92. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape, The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. The support portion (70) prepared in the preparation step (S01) is a portion formed to connect the first tooth portion (32) and the second tooth portion (42). A method for manufacturing the stator structure (1) according to claim 91.

93. Preparation step (S01) involves preparing a first magnetic member (30), a second magnetic member (40), and a non-magnetic material (50x), The arrangement step (S02) involves arranging the first magnetic member (30) and the second magnetic member (40) facing each other, and placing a non-magnetic material (50x) between the first magnetic member (30) and the second magnetic member (40), A curing step (S03) in which the non-magnetic material (50x) is cured to form a non-magnetic member (50), Equipped with, In the preparation step (S01), at least the first magnetic member (30) has one or more first protrusions (30a) that protrude from the surface of the first magnetic member (30), At least one or more second protrusions (40a) are provided on the second magnetic member (40) that protrude from the surface of the second magnetic member (40), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged facing each other such that each of the first protrusions (30a) and the corresponding second protrusions (40a) are in contact with each other, thereby arranging the corresponding support portion (70). In the arrangement step (S02), at least the first magnetic member (30) and the second magnetic member (40) are connected via the respective support portions (70). A method for manufacturing a stator structure (1).

94. In the arrangement step (S02), each of the first protrusions (30a) and the corresponding second protrusions (40a) are positioned opposite each other and interlocked, so that the first magnetic member and the second magnetic member are arranged. A method for manufacturing the stator structure (1) according to claim 93.

95. In the preparation step (S01), each of the first protrusions (30a) having a first side surface (30b) which is a side surface rising from the surface of the first magnetic member (30) is prepared. In the preparation step (S01), each of the second protrusions (40a) having a second side surface (40b) which is a side surface rising from the surface of the second magnetic member (40) is prepared. In the arrangement step (S02), each of the first side surfaces (30b) and the corresponding second side surface (40b) are facing each other and interlocked. A method for manufacturing the stator structure (1) according to claim 94.

96. Each of the first protrusions (30a) prepared in the preparation step (S01) is one or more convex ridges having the first side surface (30b) as its side surface. Each of the second protrusions (40a) prepared in the preparation step (S01) is one or more protrusions having the second side surface (40b) as its side surface. A method for manufacturing the stator structure (1) according to claim 95.

97. Each of the first protrusions (30a) prepared in the preparation step (S01) is a portion that is bent and protruded from the portion surrounded by the first cut portion (30c) formed on the first magnetic member (30), Each of the second protrusions (40a) is a portion that is bent and protrudes from the portion surrounded by the second cut portion (40c) formed on the second magnetic member (40). A method for manufacturing the stator structure (1) according to claim 93.

98. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that extend from the first yoke portion (31) toward the center of the annular shape. The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that extend from the second yoke portion (41) toward the center of the annular shape. In the state in which each support portion (70) is positioned between the first magnetic member (30) and the second magnetic member (40) in the arrangement step (S02), each support portion (70) is positioned at least between the first tooth portion (32) and the corresponding second tooth portion (42). A method for manufacturing the stator structure (1) according to any one of claims 93 to 97.

99. The boundary between the first magnetic member (30) prepared in the preparation step (S01) and each of the first protrusions (30a) is the edge of the first magnetic member (30), The boundary between the second magnetic member (40) and each of the second protrusions (40a) is the edge of the second magnetic member (40). A method for manufacturing the stator structure (1) according to claim 93.

100. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), Each of the first body sections (33) has a pair of opposing first body edges (33a), The boundary between each of the first protrusions (30a) and the first magnetic member (30) is at least one of the pair of first furring strips (33a), The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth portions (42) has a second body portion (43) extending from the second yoke portion (41) and a second tip portion (44) extending from the second body portion (43), Each of the second body sections (43) has a pair of opposing second body edges (43a), The boundary between each of the second protrusions (40a) and the second magnetic member (40) is at least one of the pair of second furring strips (43a). A method for manufacturing the stator structure (1) according to claim 99.

101. In the preparation step (S01), two or more of the support parts (70) are prepared. In the preparation step (S01), a pair of first protrusions (30a) are prepared, each of the pair of first purlins (33a) of at least one of the first body portions (33). A pair of second protrusions (40a) are provided, each of the pair of second purlins (43a) of at least one of the second body sections (43), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged such that a pair of first protrusions (30a) and a pair of second protrusions (40a) face each other. A method for manufacturing the stator structure (1) according to claim 100.

102. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), The boundary between each of the first protrusions (30a) and the first magnetic member (30) is the first tip edge (34a), which is the tip edge of the first tip portion (34). The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth (42) has a second body (43) extending from the second yoke (41) and a second tip (44) extending from the second body (43). The boundary between each of the second protrusions (40a) and the second magnetic member (40) is the second tip edge (44a), which is the tip edge of the second tip portion (44). A method for manufacturing the stator structure (1) according to claim 99.

103. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), Each of the first tip portions (34) has a pair of first side edges (34b) which are a pair of edges facing each of the adjacent first tip portions (34), The boundary between each of the first protrusions (30a) and the first magnetic member (30) is at least one of the pair of first side edges (34b), The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth portions (42) has a second body portion (43) extending from the second yoke portion (41) and a second tip portion (44) extending from the second body portion (43), Each of the second tip portions (44) has a pair of second side edges (44b) which are a pair of edges facing each of the adjacent second tip portions (44), The boundary between each of the second protrusions (40a) and the second magnetic member (40) is at least one of the pair of second side edges (44b). A method for manufacturing the stator structure (1) according to claim 99.

104. In the preparation step (S01), two or more of the support parts (70) are prepared. In the preparation step (S01), a pair of first protrusions (30a) are prepared on at least one of the first tip portions (34), with each of the pair of first side edges (34b) as the boundary. At least one of the second tip portions (44) is provided with a pair of second protrusions (40a) formed with each of the pair of second side edges (44b) as the boundary, In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged such that the pair of first protrusions (30a) and the pair of second protrusions (40a) face each other. A method for manufacturing the stator structure (1) according to claim 103.

105. The first magnetic member (30) prepared in the preparation step (S01) has a first yoke portion (31) that is annular or part of an annular shape, and a plurality of first teeth portions (32) that protrude toward the center from the first yoke portion (31), Each of the first teeth (32) has a first body portion (33) extending from the first yoke portion (31) and a first tip portion (34) extending from the first body portion (33), Each of the first tip portions (34) has a pair of first rear end edges (34c) which are rear end edges facing the corresponding first yoke portion (31) and are arranged on either side of the corresponding first body portion (33). The boundary between each of the first protrusions (30a) and the first magnetic member (30) is at least one of the pair of first rear edges (34c), The second magnetic member (40) prepared in the preparation step (S01) has a second yoke portion (41) that is annular or part of an annular shape, and a plurality of second teeth portions (42) that protrude toward the center from the second yoke portion (41), Each of the second teeth portions (42) has a second body portion (43) extending from the second yoke portion (41) and a second tip portion (44) extending from the second body portion (43), Each of the second tip portions (44) has a pair of second rear edge portions (44c) which are rear edge portions facing the corresponding second yoke portion (41) and are positioned on either side of the corresponding second body portion (43). The boundary between each of the second protrusions (40a) and the second magnetic member (40) is at least one of the pair of second rear edges (44c). A method for manufacturing the stator structure (1) according to claim 99.

106. In the preparation step (S01), a pair of first protrusions (30a) are prepared, each of the pair of first rear edges (34c) of at least one of the first tip portions (34). A pair of second protrusions (40a) are provided, each of the pair of second rear edges (44c) of at least one of the second tip portions (44), In the arrangement step (S02), the first magnetic member (30) and the second magnetic member (40) are arranged such that the pair of first protrusions (30a) and the pair of second protrusions (40a) face each other. A method for manufacturing the stator structure (1) according to claim 105.

Images