Magnetic material used in a stator structure, and stator structure

Abstract

The present disclosure aims to provide a magnetic member used in 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, and a stator structure. [Solution] The magnetic member 20 used in the stator structure 1 according to this disclosure comprises a first magnetic part 30 which is annular or a part of an annular shape, a second magnetic part 40 which is annular or a part of an annular shape, and one or more connecting parts 70 which connect the first magnetic part 30 and the second magnetic part 40, wherein one end of each connecting part 70 is connected to the outer circumference of the first magnetic part 30, and the end of each connecting part 70 opposite to the one end is connected to the outer circumference of the second magnetic part 40.

Description

Technical Field

[0001] The present disclosure relates to a magnetic member used in a stator structure and a stator structure.

Background Art

[0002] Conventionally, in a resolver stator, in order to reduce the amount of magnetic material used in the stator core and suppress the manufacturing cost of the stator core, a resolver stator in which the 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] In a conventional resolver stator, since the stator yoke and each tooth are formed using a single metal plate, the amount of magnetic material used can be reduced, and the manufacturing cost has been successfully suppressed. Furthermore, in order to improve the detection accuracy, by using teeth formed by bending and laminating a part of the metal plate in the direction along the axial direction, the volume of the teeth is increased.

[0005] However, in such a resolver stator, if a coil is wound around each tooth to further improve the detection accuracy, the coil will be wound around each tooth extending along the rotation axis, and the air gap between each tooth and the rotor will increase, resulting in a new problem that further improvement in detection accuracy becomes impossible or the detection accuracy decreases.

[0006] These problems were addressed by devising a stator with a novel configuration. Specifically, the stator body used consisted of plate-shaped magnetic members, non-magnetic members, and magnetic members stacked in that order along the axis of rotation. In other words, in such a stator body, the non-magnetic members are stacked 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.

[0007] 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.

[0008] However, in such stator bodies, misalignment can occur in each of the two magnetic members when viewed along the central axis, and this misalignment of the magnetic members can lead to problems such as a decrease in the detection accuracy of the resolver.

[0009] This disclosure aims to provide a magnetic member used in a stator structure and a stator structure that can 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, in order to solve the above problem. [Means for solving the problem]

[0010] The magnetic member used in the stator structure according to this disclosure comprises a first magnetic part which is annular or part of an annular shape, a second magnetic part which is annular or part of an annular shape, and one or more connecting parts which connect the first magnetic part and the second magnetic part, wherein one end of each connecting part is connected to the outer circumference of the first magnetic part, and the end of each connecting part opposite to the one end is connected to the outer circumference of the second magnetic part.

[0011] The stator structure according to this disclosure comprises a stator body and a plurality of coils, the stator body having a magnetic member used in the stator structure of this disclosure and a non-magnetic member that is an annular or part of an annular shape, the first magnetic part and the second magnetic part are arranged facing each other, and the non-magnetic member is arranged between the first magnetic part and the second magnetic part. [Effects of the Invention]

[0012] The magnetic members used in the stator structure according to this disclosure, and the stator structure itself, make it 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]

[0013] [Figure 1] This is a schematic diagram showing the stator structure according to Embodiment 1. [Figure 2] Figure 1 is a perspective view showing the magnetic component. [Figure 3] Figure 2 is a cross-sectional view showing the magnetic member along line III-III. [Figure 4] Figure 1 is a conceptual diagram illustrating the process of punching out magnetic components that make up the magnetic member. [Figure 5] Figure 4 is a schematic diagram showing the punched-out magnetic component. [Modes for carrying out the invention]

[0014] 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 the present disclosure will be described. FIG. 1 is a schematic diagram showing the stator structure 1 according to Embodiment 1. The stator structure 1 can be applied as a stator of a resolver or a torque sensor.

[0015] The stator structure 1 is annular. An axis passing through the center of the annular shape of the stator structure 1 is defined as the central axis L. A rotating body 90 such as a rotor is disposed in a hole opened at the center of the annulus of the stator structure 1. The central axis L and the rotation axis of the rotating body 90 coincide.

[0016] The stator structure 1 and the rotating body 90 are arranged in a non-contact state with each other. A resolver or a torque sensor can detect physical quantities such as the rotation angle, rotation speed, or rotation torque of the rotating body 90 using the stator structure 1.

[0017] The stator structure 1 includes an annular stator body 10 and twelve coils 15. The stator body 10 has an annular yoke portion 11 and twelve teeth portions 12 extending from the yoke portion 11 toward the inner side in the radial direction of the annulus. Each coil 15 is disposed on each teeth portion 12.

[0018] 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 the teeth portions 12 and the coils 15 is not limited to twelve, and any number may be provided.

[0019] The stator body 10 has an annular magnetic member 20 and an annular non-magnetic member 50. FIG. 2 is a perspective view showing the magnetic member 20 of FIG. 1. FIG. 3 is a cross-sectional view showing a cross-section of the magnetic member 20 of FIG. 2 taken along line III-III.

[0020] The magnetic member 20 has a first magnetic portion 30, a second magnetic portion 40, and a connecting portion 70 connecting the first magnetic portion 30 and the second magnetic portion 40. The first magnetic portion 30 and the second magnetic portion 40 are arranged to face each other.

[0021] When viewed along the central axis line L, the first magnetic part 30 and the second magnetic part 40 are both in an annular shape and have substantially the same shape. The magnetic member 20 has portions corresponding to the yoke portion 11 and the teeth portion 12 of the stator main body 10. Each of the first magnetic part 30 and the second magnetic part 40 also has portions corresponding to the yoke portion 11 and the teeth portion 12 of the stator main body 10, similar to the magnetic member 20.

[0022] The first magnetic part 30 and the second magnetic part 40 are arranged opposite to each other such that their outer shapes coincide with each other when viewed along the central axis line L. That is, the shape of the magnetic member 20 when viewed along the central axis line L is substantially the same as the shapes of the first magnetic part 30 and the second magnetic part 40 respectively.

[0023] The connecting part 70 is a part that connects the first magnetic part 30 and the second magnetic part 40 so that the first magnetic part 30 and the second magnetic part 40 are arranged opposite to each other.

[0024] The magnetic member 20 is composed of a single metal plate. FIG. 4 is a conceptual diagram when punching the magnetic component 20x that constitutes the magnetic member 20 of FIG. 1. FIG. 5 is a schematic diagram showing the magnetic component 20x punched in FIG. 4.

[0025] The magnetic member 20 is composed of magnetic components 20x punched from a metal plate 100. One or more magnetic components 20x can be obtained from a single metal plate 100 by punching. The magnetic member 20 is formed by performing bending processing on the magnetic components 20x punched from a single metal plate 100.

[0026] Similar to the magnetic member 20, the magnetic component 20x has a first magnetic part 30, a second magnetic part 40, and a connecting part 70 that connects the two between the first magnetic part 30 and the second magnetic part 40. One end of the connecting part 70 is connected to the outer periphery of the first magnetic part 30. The end opposite to one end of the connecting part 70 is connected to the outer periphery of the second magnetic part 40.

[0027] The magnetic component 20x is punched out so that the first magnetic part 30, the second magnetic part 40, and the connecting part 70 that connects the first magnetic part 30 and the second magnetic part 40 are all on the surface of the metal plate material 100, i.e., extending in a planar manner.

[0028] When the center of the ring defined by the first magnetic part 30 is defined as the first center point L30, the center of the ring defined by the second magnetic part 40 is defined as the second center point L40, and the straight line connecting the first center point L30 and the second center point L40 is defined as the connecting axis L70, the connecting part 70 of the magnetic component 20x extends along the connecting axis L70, in the direction of the connecting axis L70.

[0029] In other words, the longitudinal direction of the connecting portion 70 is aligned with the direction in which the connecting axis L70 extends. When the direction perpendicular to the longitudinal direction of the connecting portion 70 is defined as the width direction, the connecting axis L70 is located at the center of the connecting portion 70 in the width direction.

[0030] The metal sheet material 100 is a strip-shaped electrical steel sheet. The RD direction in Figure 4 is the rolling direction of the metal sheet material 100. The metal sheet material 100, being an electrical steel sheet, has biased magnetic properties along the RD direction, which is the rolling direction.

[0031] The magnetic component 20x is molded and punched out from a metal plate 100 such that the direction of the connecting axis L70 is inclined at 45 degrees with respect to the RD direction. That is, the angle θ between the direction of the connecting axis L70 and the RD direction is 45 degrees.

[0032] Returning to Figures 2 and 3, the explanation continues. The plate-shaped, or planar, magnetic component 20x is bent along the boundary between the connecting portion 70 and the first magnetic portion 30, and along the boundary between the connecting portion 70 and the second magnetic portion 40, so that the first magnetic portion 30 and the second magnetic portion 40 face each other. The magnetic member 20 is formed by bending the magnetic component 20x.

[0033] When viewed along the central axis L with the magnetic member 20 formed, the angle between the rolling direction of the metal plate material 100 constituting the first magnetic part 30 and the rolling direction of the metal plate material 100 constituting the second magnetic part 40 is 180 degrees.

[0034] Returning to Figure 1, let's continue the explanation. A non-magnetic member 50 is positioned between the first magnetic part 30 and the second magnetic part 40 of the magnetic member 20. The non-magnetic member 50 is made of a non-magnetic material consisting of a fluid resin that has been cured.

[0035] To accommodate the non-magnetic member 50, the magnetic member 20 is placed inside a resin mold (not shown). The resin mold in which the magnetic member 20 is placed is further filled with a fluid non-magnetic material. By allowing the filled non-magnetic material to harden sufficiently inside the resin mold, a stator body 10 is formed in which the non-magnetic member 50 is placed relative to the magnetic member 20.

[0036] In other words, the non-magnetic material, which has fluidity, hardens while being filled between the first magnetic part 30 and the second magnetic part 40 that face each other, thereby becoming a non-magnetic member 50. The formed stator body 10 is removed from the resin mold, the coil 15 is placed on the teeth part 12, and the necessary wiring is done to form the stator structure 1.

[0037] The coil 15 may be formed by winding a conductor around the teeth portion 12, or by placing a block-shaped core on the teeth portion 12.

[0038] In Embodiment 1, the non-magnetic member 50 is formed by filling the space between the first magnetic part 30 and the second magnetic part 40 with a fluid non-magnetic material and hardening it. However, it is not limited to this. A solid object, i.e., a block-shaped non-magnetic member 50, may be placed between the first magnetic part 30 and the second magnetic part 40. In that case, the non-magnetic member 50 can be fixed to the magnetic member 20 by a well-known fixing method. For example, fixing methods such as crimping, screwing, fixing with pins, or fixing with adhesive can be used. In that case, the non-magnetic member 50 may be configured to be in contact with each of the first magnetic part 30 and the second magnetic part 40, thereby further firmly fixing their respective positions. Therefore, as the non-magnetic material constituting the non-magnetic member 50, non-magnetic stainless steel or resin may be used.

[0039] Furthermore, in Embodiment 1, one connecting portion 70 is formed on the magnetic member 20. However, this is not the only option. Multiple connecting portions 70 may be formed on the magnetic member 20 if the connecting portion 70 can be bent to arrange the first magnetic portion 30 and the second magnetic portion 40 facing each other. Also, if the magnetic member 20 is formed by bending a magnetic component 20x punched out from an electromagnetic steel sheet, multiple connecting portions 70 may be formed on the magnetic member 20 if, when the magnetic member 20 is viewed along its central axis L, the angle between the rolling direction of the metal sheet material 100 constituting the first magnetic portion 30 and the rolling direction of the metal sheet material 100 constituting the second magnetic portion 40 is 180 degrees.

[0040] Furthermore, the connecting portion 70 in Embodiment 1 has a substantially rectangular shape with a longitudinal direction along the connecting axis L70. However, it is not limited to this. The shape of the connecting portion 70 can be appropriately selected if the connecting portion 70 can be bent so that the first magnetic portion 30 and the second magnetic portion 40 are positioned opposite each other. Also, if a magnetic component 20x punched out from an electromagnetic steel sheet is bent to form a magnetic member 20, the shape of the connecting portion 70 can be appropriately selected if, when the magnetic member 20 is viewed along the central axis L, the angle between the rolling direction of the metal sheet material 100 constituting the first magnetic portion 30 and the rolling direction of the metal sheet material 100 constituting the second magnetic portion 40 is 180 degrees.

[0041] Furthermore, the magnetic member 20 in Embodiment 1 is formed from a metal sheet material 100 which is a magnetic steel sheet with biases in magnetic properties depending on the rolling direction. However, it is not limited to this. For example, the magnetic member 20 may be formed from a metal sheet material 100 which has no bias in magnetic properties. Alternatively, for example, the magnetic member 20 may be formed to have a desired shape by cutting a block-shaped magnetic material, or a magnetic member 20 having a desired shape obtained by hardening a fluid magnetic material. Therefore, as the magnetic material constituting the magnetic member 20, electromagnetic steel sheets, permalloy, ferrite, nanocrystalline soft magnetic alloys, amorphous alloys, and resins containing magnetic substances may be used.

[0042] Furthermore, in Embodiment 1, the stator structure 1, stator body 10, magnetic member 20, first magnetic part 30, second magnetic part 40, and non-magnetic member 50 are each annular in shape, but are not limited to this. For example, the stator structure 1, stator body 10, magnetic member 20, first magnetic part 30, second magnetic part 40, and non-magnetic member 50 may each be in a state where a part of the annular shape is cut out, that is, a part of an annular shape.

[0043] Furthermore, in Embodiment 1, the magnetic component 20x is bent relative to each other along the boundary between the connecting portion 70 and the first magnetic portion 30, and along the boundary between the connecting portion 70 and the second magnetic portion 40. However, it is not limited to this. For example, the connecting portion 70 may not be bent relative to each other along the boundary between the connecting portion 70 and the first magnetic portion 30, and along the boundary between the connecting portion 70 and the second magnetic portion 40, but rather the connecting portion 70 may be bent in a curved manner. That is, it is sufficient that the first magnetic portion 30 and the second magnetic portion 40 are positioned facing each other by bending the portion between either the first magnetic portion 30 and the second magnetic portion 40 via each connecting portion 70.

[0044] The magnetic member 20 used in the stator structure 1 according to Embodiment 1 comprises a first magnetic part 30 which is annular or a part of an annular shape, a second magnetic part 40 which is annular or a part of an annular shape, and one or more connecting parts 70 which connect the first magnetic part 30 and the second magnetic part 40. In addition, one end of each connecting part 70 is connected to the outer circumference of the first magnetic part 30, and the end of each connecting part 70 opposite to the one end is connected to the outer circumference of the second magnetic part 40. This prevents misalignment between the first magnetic part 30 and the second magnetic part 40, which are the two magnetic members, when viewed along the central axis L. Therefore, by using such a magnetic member 20, it is possible to provide a stator structure 1 that can prevent a decrease in the detection accuracy of the resolver. Furthermore, since the first magnetic part 30 and the second magnetic part 40 are a single component, there is no need to arrange multiple components, which reduces the working time. Therefore, the productivity of the stator body 10 can be improved.

[0045] In the magnetic member 20 used in the stator structure 1 according to Embodiment 1, the first magnetic part 30, the second magnetic part 40, and each connecting part 70 are punched out from a metal sheet material 100 in a connected state. As a result, the first magnetic part 30, the second magnetic part 40, and each connecting part 70 can be formed by punching alone. Therefore, the manufacturing process of the stator structure 1 can be reduced, and the manufacturing cost of the stator structure 1 can be reduced.

[0046] In the stator structure 1 according to Embodiment 1, the magnetic member 20 is arranged such that the first magnetic part 30 and the second magnetic part 40 face each other, as the portion between the first magnetic part 30 and the second magnetic part 40 via each connecting portion 70 is bent. This allows the magnetic member 20 having the opposing first magnetic part 30 and second magnetic part 40 to be formed simply by bending, without separating the first magnetic part 30 and the second magnetic part 40. Therefore, when the two opposing magnetic members, the first magnetic part 30 and the second magnetic part 40, are viewed along the central axis L, misalignment between the two magnetic members, the first magnetic part 30 and the second magnetic part 40, can be prevented. Thus, by using such a magnetic member 20, a stator structure 1 can be provided that prevents a decrease in the detection accuracy of the resolver. Furthermore, this allows the magnetic member 20 having the opposing first magnetic part 30 and second magnetic part 40 to be formed simply by bending. Therefore, the manufacturing process of the stator structure 1 can be reduced, and the manufacturing cost of the stator structure 1 can be reduced.

[0047] In the magnetic member 20 used in the stator structure 1 according to Embodiment 1, the metal plate material 100 is a magnetic steel plate. The first magnetic part 30, the second magnetic part 40, and each connecting part 70 are punched out so that each of them extends onto the surface of the metal plate material 100. Furthermore, when the first magnetic part 30, the second magnetic part 40, and each connecting part 70 are punched out in a planar shape, the connecting axis L70, which is the line connecting the first center point L30, which is the center point of the first magnetic part 30, and the second center point L40, which is the center point of the second magnetic part 40, is inclined at 45 degrees with respect to the rolling direction of the magnetic steel plate, which is the metal plate material 100. As a result, when the magnetic member 20, which has opposing first magnetic part 30 and second magnetic part 40, is viewed along the central axis L, the angle between the rolling direction of the metal plate material 100 constituting the first magnetic part 30 and the rolling direction of the metal plate material 100 constituting the second magnetic part 40 is 180 degrees. Therefore, the first magnetic part 30 and the second magnetic part 40 can be arranged so that the bias in the magnetic properties of the first magnetic part 30 and the bias in the magnetic properties of the second magnetic part 40 cancel each other out. Thus, by using such a magnetic member 20, it is possible to provide a stator structure 1 that can provide a resolver with higher detection accuracy. Furthermore, as a result, it is no longer necessary to manage the rolling direction of the first magnetic part 30 and the rolling direction of the second magnetic part 40 separately, as only the punching direction of one magnetic component 20x needs to be managed. Therefore, productivity can be improved compared to when the first magnetic part 30 and the second magnetic part 40 are separate components. Thus, the manufacturing cost of the stator structure 1 can be reduced.

[0048] In the magnetic member 20 used in the stator structure 1 according to Embodiment 1, each connecting portion 70 extends along the connecting axis L70. This allows the orientation of each connecting portion 70 to be intuitively understood, making it easy to determine the placement position of the magnetic component 20x relative to the metal plate material 100 at the manufacturing site. Consequently, the manufacturing cost of the stator structure 1 can be reduced.

[0049] In the magnetic member 20 used in the stator structure 1 according to Embodiment 1, one connecting portion 70 extends along the connecting axis L70. This allows the orientation of the connecting portion 70 to be more intuitively understood, making it easier to determine the placement position of the magnetic component 20x relative to the metal plate material 100 at the manufacturing site. Consequently, the manufacturing cost of the stator structure 1 can be further reduced.

[0050] The stator structure 1 according to Embodiment 1 comprises a stator body 10 and a plurality of coils 15. The stator body 10 also has a magnetic member 20 used in the stator structure 1 of this disclosure and a non-magnetic member 50 that is an annular or part of an annular shape. The non-magnetic member 50 is positioned between a first magnetic part 30 and a second magnetic part 40 that are arranged facing each other. This prevents misalignment between the first magnetic part 30 and the second magnetic part 40, which are the two magnetic members, when viewed along the central axis L. Therefore, a stator structure 1 can be provided that prevents a decrease in the detection accuracy of the resolver. Furthermore, since the first magnetic part 30 and the second magnetic part 40 are a single component, there is no need to arrange multiple components, which reduces the working time. Therefore, the productivity of the stator body 10 can be improved, and consequently, the productivity of the stator structure 1 can be improved. Furthermore, when using magnetic steel sheet for the metal sheet material 100 and punching out the magnetic component 20x with the direction of the connecting axis L70 tilted 45 degrees with respect to the rolling direction RD, it becomes necessary to manage only the punching direction of one magnetic component 20x, eliminating the need to manage the rolling direction of the first magnetic part 30 and the rolling direction of the second magnetic part 40 separately. Therefore, productivity can be improved compared to when the first magnetic part 30 and the second magnetic part 40 are separate components. Thus, the manufacturing cost of the stator structure 1 can be reduced.

[0051] In the stator structure 1 according to Embodiment 1, the non-magnetic member 50 is block-shaped. As a result, the stator body 10 can be formed simply by arranging the block-shaped non-magnetic member 50 between the opposing first magnetic part 30 and second magnetic part 40. Therefore, the manufacturing cost of the stator structure 1 can be reduced.

[0052] In the stator structure 1 according to Embodiment 1, the non-magnetic member 50 is formed by hardening a fluid non-magnetic material while it is filled between the first magnetic part 30 and the second magnetic part 40. This makes it possible to obtain a non-magnetic member 50 that is in close contact with the first magnetic part 30 and the second magnetic part 40. Consequently, the structural strength of the stator body 10 is improved, and misalignment between the first magnetic part 30 and the second magnetic part 40 can be further prevented. Thus, a stator structure 1 can be provided that can further prevent a decrease in the detection accuracy of the resolver. Furthermore, this means that when arranging the first magnetic part 30 and the second magnetic part 40 in a resin mold, only one magnetic member 20 needs to be placed. Consequently, there is no need to perform high-precision positioning of the first magnetic part 30 and the second magnetic part 40 within the resin mold. Consequently, the manufacturing cost of the stator structure 1 can be reduced. In addition, even when using a magnetic member 20 made of magnetic steel sheet, there is no need to control the rolling direction of the first magnetic part 30 and the second magnetic part 40 and arrange them based on the rolling direction in order to adjust for bias in magnetic properties. Therefore, the manufacturing cost of the stator structure 1 can be reduced. [Explanation of Symbols]

[0053] 1 Stator structure, 10 Stator body, 11 Yoke section, 12 Teeth section, 15 Coil, 20 Magnetic member, 20x Magnetic component, 30 First magnetic section, 40 Second magnetic section, 50 Non-magnetic member, 70 Connecting section, 90 Rotating body, L30 First center point, L40 Second center point, L70 Connecting axis, 100 Metal plate material, L Center axis, RD Rolling direction, θ Angle.

Claims

1. The device comprises a first magnetic part (30) which is an annular or part of an annular shape, a second magnetic part (40) which is an annular shape or part of an annular shape, and one or more connecting parts (70) which connect the first magnetic part (30) and the second magnetic part (40), One end of each connecting portion (70) is connected to the outer circumference of the first magnetic portion (30), The end of each connecting portion (70) opposite to the one end is connected to the outer circumference of the second magnetic portion (40). Magnetic member (20) used in the stator structure (1).

2. Each of the first magnetic part (30), the second magnetic part (40), and each of the connecting parts (70) is punched out from a metal plate (100) while connected. A magnetic member (20) used in the stator structure (1) according to claim 1.

3. The portion between the first magnetic part (30) and the second magnetic part (40) via each of the connecting parts (70) is bent so that the first magnetic part (30) and the second magnetic part (40) are arranged facing each other. A magnetic member (20) used in the stator structure (1) according to claim 2.

4. The aforementioned metal plate material (100) is a magnetic steel plate, The first magnetic portion (30), the second magnetic portion (40), and each of the connecting portions (70) are punched out so that each of the first magnetic portion (30), the second magnetic portion (40), and each of the connecting portions (70) extends onto the surface of the metal plate material (100). When the first magnetic portion (30), the second magnetic portion (40), and each of the connecting portions (70) are punched out in a planar shape, the connecting axis (L70), which is the line connecting the first center point (L30), which is the center point of the first magnetic portion (30), and the second center point (L40), which is the center point of the second magnetic portion (40), is inclined at 45 degrees with respect to the rolling direction of the magnetic steel sheet, which is the metal sheet material (100). A magnetic member (20) used in the stator structure (1) according to claim 3.

5. Each of the aforementioned connecting parts (70) extends along the connecting axis (L70). A magnetic member (20) used in the stator structure (1) according to claim 4.

6. The aforementioned connecting portion (70) extends along the connecting axis (L70). A magnetic member (20) used in the stator structure (1) according to claim 5.

7. Stator body (10) and Multiple coils (15) and Equipped with, The stator body (10) is A magnetic member (20) used in the stator structure (1) according to any one of claims 1 to 6, A non-magnetic member (50) that is an annular shape or part of an annular shape, It has, The non-magnetic member (50) is positioned between the first magnetic part (30) and the second magnetic part (40), which are arranged facing each other. Stator structure (1).

8. The non-magnetic member (50) is block-shaped. The stator structure (1) according to claim 7.

9. The non-magnetic member (50) is formed by hardening a fluid non-magnetic material that is filled between the first magnetic part (30) and the second magnetic part (40). The stator structure (1) according to claim 7.

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