Coil body, armature, and rotating electrical machine

Abstract

The coil body (32) includes a substrate (34) and a plurality of coil portions (16). The substrates (34) are formed in a shape extending in the radial direction using an insulating material, and are laminated in the axial direction. Each of the plurality of coil sections (16) is formed on the substrate (34) using a conductive material, and has a plurality of conductor sections (16B) arranged side by side in the circumferential direction. The conductor parts (16B) formed on the substrate (34) of one layer and the conductor parts (16B) formed on the substrate (34) of the other layer are alternately arranged in the circumferential direction. In addition, the plurality of conductor parts (16B) formed on the substrate (34) of one layer and the plurality of conductor parts (16B) formed on the substrate (34) of the other layer overlap in the circumferential direction.

Description

[0001] Reference to Related Applications This application is based on Japanese Patent Application No. 2023-066640 filed on April 14, 2023, the contents of which are hereby incorporated by reference. TECHNICAL FIELD

[0002] The present disclosure relates to a coil body, an armature, and a rotary electric machine. BACKGROUND

[0003] A rotary electric machine coil for a rotary electric machine such as a motor is disclosed in Patent Document 1. The rotary electric machine coil described in this document has multilayer coil board elements formed in a circular plate shape, and prescribed wiring patterns are formed on these coil board elements. In addition, these coil board elements are separated from each other at the intermediate portion and joined at the inner and outer peripheral portions, and constitute a coil board having a prescribed coil winding pattern.

[0004] Prior Art Documents Patent Documents Patent Document 1: Japanese Patent Application Publication No. 2008-061357 SUMMARY

[0005] It is desirable to achieve high efficiency and high torque while suppressing an increase in the size of a rotary electric machine, but the structure described in the above Patent Document 1 leaves room for improvement in this regard.

[0006] An object of the present disclosure is to achieve high efficiency and high torque while suppressing an increase in the size of a coil body, an armature, and a rotary electric machine.

[0007] In the first mode of the present disclosure, the coil body includes: a base member that is formed in a shape extending in the radial direction using an insulating material and is stacked in the axial direction; and a plurality of coil portions that are formed on the base member using an electrically conductive material and have a plurality of conductor portions arranged in the circumferential direction, and are configured such that the conductor portions formed on one layer of the base member and the conductor portions formed on other layers of the base member are alternately arranged in the circumferential direction, and the plurality of conductor portions formed on one layer of the base member and the plurality of conductor portions formed on other layers of the base member overlap in the circumferential direction.

[0008] Further, the coil body includes: a base member that uses an insulating material and is formed in a shape extending in a radial direction, and is stacked in an axial direction; a plurality of coil portions that each use an electrically conductive material and is formed on the base member, and has a plurality of conductor portions arranged in a circumferential direction; and a plurality of magnetic body portions that each use a soft magnetic material and is formed on the base member, the magnetic body portion formed on the base member of one layer and the magnetic body portion formed on the base member of another layer are arranged at the same position in the circumferential direction.

[0009] Further, the armature has the coil body.

[0010] Further, the rotary electric machine includes: one of a stator and a rotor that includes the armature; and the other of the stator and the rotor that has a magnet arranged opposite to the coil body in the axial direction.

[0011] By so configuring, it is possible to realize high efficiency and high torque while suppressing an increase in size. BRIEF DESCRIPTION OF DRAWINGS

[0012] The above objects, other objects, features, and advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0013] Figure 1 is a perspective view showing an electric motor of a first embodiment, and shows a part of the electric motor cut away.

[0014] Figure 2 is an exploded perspective view showing the electric motor of the first embodiment exploded, and shows a part of components cut away.

[0015] Figure 3 is an exploded perspective view showing the coil body exploded, and shows a part of the coil body cut away.

[0016] Figure 4 is a plan view schematically showing the coil body.

[0017] Figure 5 is a diagram explaining star connection.

[0018] Figure 6 is a plan view schematically showing one base plate and a coil portion and the like formed on the one base plate.

[0019] Figure 7 is a sectional view showing a part of a base plate of a specific layer and a coil portion formed on the base plate in the coil portion of the electric motor of the first embodiment.

[0020] Figure 8is a sectional view showing a part of a substrate of a plurality of layers and a cross section of the coil portion formed on the substrate of a plurality of layers in the coil portion of the electric motor of the first embodiment.

[0021] Figure 9 is an exploded perspective view showing the coil body of the electric motor of the second embodiment exploded and shown, and a part of the coil body is cut and shown.

[0022] Figure 10 is a plan view schematically showing the coil body of the electric motor of the second embodiment.

[0023] Figure 11 is a plan view schematically showing one substrate of the electric motor of the second embodiment and a coil portion and the like formed on the one substrate.

[0024] Figure 12 is a sectional view showing a part of a substrate of a specific layer and a cross section of the coil portion formed on the substrate in the coil portion of the electric motor of the second embodiment.

[0025] Figure 13 is a sectional view showing a part of a substrate of a plurality of layers and a cross section of the coil portion formed on the substrate of a plurality of layers in the coil portion of the electric motor of the second embodiment.

[0026] Figure 14 is a schematic view of a cross section of the stator of the electric motor of the third embodiment after the stator is cut in the axial direction and the circumferential direction.

[0027] Figure 15 is a schematic view of a cross section of the stator of the electric motor of the fourth embodiment after the stator is cut in the axial direction and the circumferential direction.

[0028] Figure 16 is a schematic view of a cross section of the stator of the electric motor of the fifth embodiment after the stator is cut in the axial direction and the circumferential direction.

[0029] Figure 17 is a schematic view of a cross section of the stator of the electric motor of the sixth embodiment after the stator is cut in the axial direction and the circumferential direction.

[0030] Figure 18 is a schematic view of a cross section of the stator of the electric motor of the seventh embodiment after the stator is cut in the axial direction and the circumferential direction.

[0031] Figure 19 is a schematic view of a cross section of the stator of the electric motor of the eighth embodiment after the stator is cut in the axial direction and the circumferential direction.

[0032] Figure 20 is a plan view schematically showing the coil body of the electric motor of the ninth embodiment.

[0033] Figure 21Fig. 10 is a plan view schematically showing the coil body of the motor of the tenth embodiment.

[0034] Figure 22 Fig. 11 is a sectional view schematically showing the coil body of the motor of the tenth embodiment after being cut in the axial and circumferential directions.

[0035] Figure 23 Fig. 12 is a plan view schematically showing one substrate and the coil portion and the soft magnetic portion, etc. formed on the one substrate of the coil body of the motor of the tenth embodiment.

[0036] Figure 24 Fig. 13 is a sectional view schematically showing one substrate and the coil portion and the soft magnetic portion, etc. formed on the one substrate of the coil body of the motor of the tenth embodiment after being cut in the axial and circumferential directions.

[0037] Figure 25 Fig. 14 is a plan view schematically showing the stator of the motor of the eleventh embodiment.

[0038] Figure 26 Fig. 15 is a sectional view schematically showing the stator of the motor of the eleventh embodiment after being cut in the axial and circumferential directions.

[0039] Figure 27 Fig. 16 is a plan view schematically showing one substrate and the coil portion, etc. formed on the one substrate of the coil body of the motor of the eleventh embodiment.

[0040] Figure 28 Fig. 17 is a plan view schematically showing the coil body of the motor of the twelfth embodiment.

[0041] Figure 29 Fig. 18 is a plan view schematically showing one substrate and the coil portion, etc. formed on the one substrate of the coil body of the motor of the twelfth embodiment.

[0042] Figure 30 Fig. 19 is a sectional view schematically showing the coil body of the motor of the thirteenth embodiment after being cut in the axial and circumferential directions.

[0043] Figure 31 Fig. 20 is a sectional view schematically showing the coil body of the motor of the fourteenth embodiment after being cut in the axial and circumferential directions.

[0044] Figure 32 Fig. 21 is a sectional view schematically showing the coil body of the motor of the fifteenth embodiment after being cut in the axial and circumferential directions.

[0045] Figure 33 Fig. 22 is a sectional view schematically showing the coil body of the motor of the sixteenth embodiment after being cut in the axial and circumferential directions.

[0046] Figure 34This is a schematic diagram of the cross-section of the coil body of the electric motor of the seventeenth embodiment after being cut along the axial and circumferential directions.

[0047] Figure 35 This is a schematic diagram of the cross-section of the coil body of the electric motor of the eighteenth embodiment after being cut along the axial and circumferential directions.

[0048] Figure 36 This is a top view showing only the coil portion formed on one side of a substrate layer that constitutes part of the coil body of the electric motor in the nineteenth embodiment.

[0049] Figure 37 This is a partial cross-sectional perspective view showing a substrate that constitutes a part of the coil body of the electric motor in the twentieth embodiment and a coil portion formed on the substrate.

[0050] Figure 38 This is a perspective view schematically showing the coil body of the electric motor according to the twenty-first embodiment. Detailed Implementation

[0051] (Structure of the electric motor in the first embodiment) use Figures 1-8 The structure of the electric motor 10 according to the first embodiment of this disclosure will be described below. Furthermore, the arrows Z, R, and C, appropriately indicated in the figures, represent the axial side, radial side, and circumferential side of the rotor 12, respectively. Additionally, hereafter, unless otherwise specified, when only axial, radial, and circumferential directions are indicated, the axial, radial, and circumferential directions of the rotor 12 will be used. Furthermore, the electric motor 10 and the electric motors of the embodiments described later are examples of rotary electric motors.

[0052] like Figure 1 and Figure 2 As shown, the electric motor 10 is an axially spaced brushless motor in which the rotor 12, which is a rotating component, and the stator 14, which is an armature and a stationary component, are arranged axially opposite each other. Furthermore, Figure 1 and Figure 2 The diagram shown is an example of an electric motor 10, etc., and there are parts that do not match the following description in terms of the number of coil parts 16, the number of magnets 18, and the shape of details.

[0053] The rotor 12 is configured to include: a rotating shaft 22, which is supported by a pair of bearings (not shown) to enable rotation; a rotor core 24, which is fixed to the rotating shaft 22; and a plurality of magnets 18, which are fixed to a surface on the other side of the rotor core 24 along its axial direction. Additionally, a pair of bearings support a frame 21 and a frame end 23, respectively. A stator 14, etc., is housed between the frame 21 and the frame end 23.

[0054] The rotor core 24 includes a first cylindrical portion 24A formed in a cylindrical shape and fixed with the rotating shaft 22 by press-fitting or the like, and a circular plate portion 24B extending toward the radially outer side from the end portion of the first cylindrical portion 24A on the axial one side. The circular plate portion 24B is formed in a circular plate shape with the axial direction as the thickness direction. The plurality of magnets 18 described later are fixed to the surface on the axial other side of the circular plate portion 24B.

[0055] The plurality of magnets 18 are formed using a magnetic compound having an intrinsic coercive force Hc of 400 [kA / m] or more and a residual flux density Br of 1.0 [T] or more. As an example, the magnets 18 are formed using a magnetic compound of NdFe 11 TiN, Nd2Fe 14 B, Sm2Fe 17 N3, FeNi, or the like. In addition, the plurality of magnets 18 are fixed to the surface on the axial other side of the circular plate portion 24B of the rotor core 24. In addition, the magnets 18 on the axial other side are N-pole magnets and the magnets 18 on the axial one side are S-pole magnets, and the magnets 18 are arranged alternately in the circumferential direction. In addition, the number of the magnets 18 is appropriately set in consideration of the output required for the motor 10 or the like.

[0056] The stator 14 includes a stator core 26 formed in a ring shape as an armature core, and a coil body 32 arranged along the surface on the axial one side of the stator core 26. The stator 14 of the present embodiment is configured in a structure without a tooth in which a portion of the stator core 26 is not arranged between the coil portions 16 constituting a portion of the coil body 32.

[0057] The stator core 26 is formed using a soft magnetic material such as a steel material. The stator core 26 is formed in a plate shape with the axial direction as the thickness direction, and is formed in a ring shape when viewed in the axial direction. The stator core 26 is arranged coaxially with the rotor 12, and the radial center position of the stator core 26 coincides in the radial direction with the radial center position of the plurality of magnets 18 fixed to the rotor core 24.

[0058] As shown in FIG. 1, the coil body 32 is configured to include a plurality of substrates 34 formed in a sheet shape using an insulating material, and a plurality of coil portions 16 formed on the plurality of substrates 34, respectively. Figure 3

[0059] The substrate 34 is formed in a plate shape with the axial direction as the thickness direction, and is formed in a ring shape when viewed in the axial direction. In addition, the substrate 34 can be a flexible substrate that can be bent in the thickness direction thereof, or can be a substrate that cannot be bent in the thickness direction thereof. Furthermore, in the coil body 32 of the present embodiment, the plurality of substrates 34 are configured to be stacked in the axial direction.

[0060] As shown in FIG. 1, the coil body 32 is configured to include a plurality of substrates 34 formed in a sheet shape using an insulating material, and a plurality of coil portions 16 formed on the plurality of substrates 34, respectively. Figure 3 Figure 4 ​​As shown, the plurality of coil portions 16 are formed on the plurality of substrates 34, respectively. Also, by stacking the plurality of substrates 34 in the axial direction, the plurality of coil portions 16 are arranged at prescribed positions in the circumferential direction and the axial direction.

[0061] Here, as shown in FIG. 2, the plurality of coil portions 16 (coil group 42U of the U phase) that constitute the U phase, the plurality of coil portions 16 (coil group 42V of the V phase) that constitute the V phase, and the plurality of coil portions 16 (coil group 42W of the W phase) that constitute the W phase are connected by star connection. That is, the end portions on the opposite side of the input portions 43 connected to the power supply in the coil group 42U of the U phase, the end portions on the opposite side of the input portions 43 connected to the power supply in the coil group 42V of the V phase, and the end portions on the opposite side of the input portions 43 connected to the power supply in the coil group 42W of the W phase are connected at the neutral point 44. Figure 5

[0062] Figure 6 The substrate 34 of the first layer and the plurality of coil portions 16 formed on the substrate 34 are shown. Here, 20 coil portions 16 that constitute the U phase, 20 coil portions 16 that constitute the V phase, and 20 coil portions 16 that constitute the W phase are formed on the substrate 34 of the first layer. Also, in the following description, the coil portions 16 that constitute the U phase are sometimes referred to as coil portions 16U. Also, the coil portions 16 that constitute the V phase are sometimes referred to as coil portions 16V. Also, the coil portions 16 that constitute the W phase are sometimes referred to as coil portions 16W. Also, in the following description, the 20 coil portions 16 that constitute the U phase are sometimes referred to as coil portion 16U1 to coil portion 16U20, respectively. Also, the 20 coil portions 16 that constitute the V phase are sometimes referred to as coil portion 16V1 to coil portion 16V20, respectively. Also, the 20 coil portions 16 that constitute the W phase are sometimes referred to as coil portion 16W1 to coil portion 16W20, respectively.

[0063] ​In detail, the coil portion 16U1 includes a first extending portion Al that inclines to the radially inner side as it goes toward the circumferential one side, and a second extending portion A2 that extends toward the radially inner side from the end portion of the circumferential one side of the first extending portion Al. In addition, the coil portion 16U1 includes a third extending portion A3 that inclines to the radially inner side as it goes toward the circumferential one side from the end portion of the opposite side to the first extending portion Al in the second extending portion A2, and a fourth extending portion A4 that inclines to the radially outer side as it goes toward the circumferential one side from the end portion of the opposite side to the second extending portion A2 in the third extending portion A3. In addition, the coil portion 16U1 includes a fifth extending portion A5 that extends toward the radially outer side from the end portion of the opposite side to the third extending portion A3 in the fourth extending portion A4, and a sixth extending portion A6 that inclines to the radially outer side as it goes toward the circumferential one side from the end portion of the opposite side to the fourth extending portion A4 in the fifth extending portion A5. In addition, in the following description, the first extending portion Al to the sixth extending portion A6 are sometimes referred to as the conductor portion 16B. In the coil body 32 of the present structure, the conductor portions 16B are arranged in a regular manner in the circumferential direction.

[0064] Here, the first extending portion Al, the second extending portion A2, and the third extending portion A3 are formed on the side of the one side face 34A (the face of the stator core portion 26 side) of the substrate 34. In addition, the fourth extending portion A4, the fifth extending portion A5, and the sixth extending portion A6 are formed on the side of the other side face 34B (the face of the opposite side to the stator core portion 26) of the substrate 34. As an example, the third extending portion A3 and the fourth extending portion A4 are electrically connected via a via hole or a through hole, or the like, which is not shown. In addition, in the Figure 6 Figure 6 Figure 6

[0065] In addition, the second extending portion A2 and the fifth extending portion A5 described above are sometimes referred to as the plumb portion 36. In addition, the first extending portion Al and the sixth extending portion A6 are sometimes referred to as the outer side coil end portion 38A that is one of the coil end portions, and the third extending portion A3 and the fourth extending portion A4 are sometimes referred to as the inner side coil end portion 38B that is the other of the coil end portions. Furthermore, by one coil portion 16 having the first extending portion Al to the sixth extending portion A6, the shape of one coil portion 16U1, as viewed in the thickness direction of the substrate 34, becomes a substantially V-shaped (U-shaped) shape that is open on the radially outer side of the substrate 34 and closed on the radially inner side.

[0066] The other coil portions 16U2 to 16U20 that constitute the U phase are also configured in the same manner as the coil portion 16U1. That is, all of the coil portions 16 that constitute the U phase are configured to be substantially the same.

[0067] The coil portion 16U2 connected to the coil portion 16U1 is arranged on the one circumferential side with respect to the coil portion 16U1. Further, the coil portion 16U3 connected to the coil portion 16U2 is arranged on the one circumferential side with respect to the coil portion 16U2. Further, the coil portion 16U4 connected to the coil portion 16U3 is arranged on the one circumferential side with respect to the coil portion 16U3. Further, the coil portion 16U5 connected to the coil portion 16U4 is arranged on the one circumferential side with respect to the coil portion 16U4. Here, the sixth extension portion A6 of the coil portion 16U5 and the first extension portion U1 of the coil portion 16U1 cross when viewed in the axial direction. Thus, the end portion on the side connected to the coil portion 16U6 in the coil portion 16U5 is located on the one circumferential side with respect to the end portion on the input portion 43 side in the coil portion 16U1.

[0068] Further, the coil portion 16U6 connected to the coil portion 16U5 is arranged on the one circumferential side with respect to the coil portion 16U5 and is arranged adjacent to the coil portion 16U1 in the circumferential direction. Further, the coil portion 16U7 connected to the coil portion 16U6 is arranged on the one circumferential side with respect to the coil portion 16U6 and is arranged adjacent to the coil portion 16U2 in the circumferential direction. Further, the coil portion 16U8 connected to the coil portion 16U7 is arranged on the one circumferential side with respect to the coil portion 16U7 and is arranged adjacent to the coil portion 16U3 in the circumferential direction. Further, the coil portion 16U9 connected to the coil portion 16U8 is arranged on the one circumferential side with respect to the coil portion 16U8 and is arranged adjacent to the coil portion 16U4 in the circumferential direction. Further, the coil portion 16U10 connected to the coil portion 16U9 is arranged on the one circumferential side with respect to the coil portion 16U9 and is arranged adjacent to the coil portion 16U5 in the circumferential direction. The end portion on the side opposite to the coil portion 16U9 in the coil portion 16U10 becomes the neutral point 44.

[0069] The coil portions 16U11 to 16U20 connected in parallel to the coil portions 16U1 to 16U10 are configured similarly to the coil portions 16U1 to 16U10. The coil portions 16U11 to 16U20 are arranged so as to be offset by 36° toward the one circumferential side with respect to the coil portions 16U1 to 16U10, respectively. Thus, the plumb portions 36 of the coil portions 16U11 to 16U20 and the plumb portions 36 of the coil portions 16U1 to 16U10 are arranged at the same position in the circumferential direction.

[0070] Further, although detailed description of the reference numerals of the drawings is omitted, the structure of the coil portions 16V1 to 16V20 constituting the V phase is the same as that of the coil portions 16U1 to 16U20 constituting the U phase. The coil portions 16V1 to 16V20 constituting the V phase are arranged so as to be shifted by 12° to the other side in the circumferential direction with respect to the coil portions 16U1 to 16U20 constituting the U phase. Further, the structure of the coil portions 16W1 to 16W20 constituting the W phase is the same as that of the coil portions 16U1 to 16U20 constituting the U phase. The coil portions 16W1 to 16W20 constituting the W phase are arranged so as to be shifted by 12° to the other side in the circumferential direction with respect to the coil portions 16V1 to 16V20 constituting the V phase.

[0071] The second layer substrate 34 overlapping the first layer substrate 34 and the plurality of coil portions 16 formed on the second layer substrate 34 also have the same structure as the first layer substrate 34 and the plurality of coil portions 16 formed on the first layer substrate 34. In the present embodiment, the pattern of the plurality of coil portions 16 formed on the first layer substrate 34 coincides with the pattern of the plurality of coil portions 16 formed on the second layer substrate 34. The plurality of coil portions 16 formed on the second layer substrate 34 are arranged so as to be shifted by 6° to the other side in the circumferential direction with respect to the plurality of coil portions 16 formed on the first layer substrate 34. Further, by overlapping the first layer substrate 34 and the second layer substrate 34 in the axial direction, the plurality of coil portions 16 formed on the first layer substrate 34 and the plurality of coil portions 16 formed on the second layer substrate 34 are arranged at prescribed positions in the circumferential direction and the axial direction.

[0072] Here, Figure 4 A drawing schematically showing a state in which the first layer substrate 34 and the second layer substrate 34 overlap is shown. In the drawing, the solid lines show each portion of the coil portions 16 arranged between the first layer substrate 34 and the second layer substrate 34, and the broken lines show each portion of the coil portions 16 other than this. As shown in the drawing, each portion of the coil portions 16 formed on the first layer substrate 34 and each portion of the coil portions 16 formed on the second layer substrate 34 are alternately arranged in the circumferential direction and overlap in the circumferential direction. Further, in this regard, a more simplified Figure 7 and Figure 8 This will be described in detail later.

[0073] Further, the third layer substrate 34 and the fourth layer substrate 34 are also laminated in the same relationship as that of the first layer substrate 34 and the second layer substrate 34. Further, in a structure having five (three layers) or more substrates 34, they are also laminated in the same relationship as that of the first layer substrate 34 and the second layer substrate 34. The number of laminated layers of the coil body 32 (the number of laminated layers of the substrates 34) can be appropriately set in consideration of the output required of the motor 10 or the like.

[0074] Figure 7 and Figure 8 A cross section after a portion of the coil body 32 is cut in the axial and circumferential directions is shown. In detail, Figure 7 A cross section of a portion of the substrate 34 of a specific layer and the coil portion 16 (conductor portion 16B) formed on the substrate 34 is shown. In addition, Figure 8 A cross section of a portion of the multilayered substrate 34 and the coil portions 16 (conductor portions 16B) formed on the multilayered substrate 34, respectively, is shown. In addition, in Figure 7 and Figure 8 the hatching of the cross section is omitted. As shown in Figure 7 and Figure 8 in the present embodiment, in a state where the substrate 34 of one layer and the substrate 34 of another layer are stacked in the axial direction, the conductor portion 16B formed on the substrate 34 of one layer and the conductor portion 16B formed on the substrate 34 of another layer are alternately arranged in the circumferential direction. In addition, in a state where the substrate 34 of one layer and the substrate 34 of another layer are stacked in the axial direction, a plurality of conductor portions 16B formed on the substrate 34 of one layer and a plurality of conductor portions 16B formed on the substrate 34 of another layer are overlapped in the circumferential direction. In addition, as shown in Figure 4 , Figure 6 , Figure 7 and Figure 8 in a state where the substrate 34 of one layer and the substrate 34 of another layer are stacked in the axial direction, the conductor portions 16B (plumb portions 36) of the coil portions 16 of the same phase are arranged in the axial direction.

[0075] In addition, in the present embodiment, the width dimension W1 in the circumferential direction of the conductor portion 16B formed on the substrate 34 of one layer gradually decreases toward the substrate 34 of another layer. In addition, the width dimension W1 in the circumferential direction of the conductor portion 16B formed on the substrate 34 of another layer gradually decreases toward the substrate 34 of one layer.

[0076] (Action and Effect) Next, the action and effect of the motor 10 of the present embodiment will be described.

[0077] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 in the motor 10 of the present embodiment, by switching the energization to the coil group 42U of the U phase, the coil group 42V of the V phase, and the coil group 42W of the W phase that constitute a portion of the stator 14, a rotating magnetic field is generated in the stator 14. Thereby, the rotor 12 rotates.

[0078] Here, the coil body 32 is configured to include a plurality of substrates 34 and a plurality of coil portions 16 respectively formed on the plurality of substrates 34. Moreover, by stacking the plurality of substrates 34 axially, the plurality of coil portions 16 are arranged at predetermined positions in the circumferential and axial directions. With this structure, it is possible to suppress the enlargement of the coil body 32 in the axial direction. As a result, it is possible to suppress the enlargement of the motor 10.

[0079] In addition, such as Figure 8 As shown, in the state where one substrate 34 and another substrate 34 are stacked axially, the conductor portions 16B formed on the first substrate 34 and the conductor portions 16B formed on the other substrate 34 are arranged alternately in the circumferential direction. Furthermore, in the state where one substrate 34 and another substrate 34 are stacked axially, the plurality of conductor portions 16B formed on the first substrate 34 and the plurality of conductor portions 16B formed on the other substrate 34 overlap in the circumferential direction. Therefore, in the coil body 32 of the motor 10 of this embodiment, the duty cycle can be improved. As a result, high efficiency and high torque can be achieved while suppressing the increase in the size of the motor 10.

[0080] Furthermore, in the coil body 32 of the motor 10 of this embodiment, the circumferential spacing of the conductor portions 16B on the substrate 34 can be increased. Therefore, for example, when using a manufacturing method that forms the conductor portions 16B on the substrate 34 by performing an etching process, the limitation on the thickness of the conductor portions 16B can be reduced. This allows for an increase in the thickness of the conductor portions 16B, thereby also improving the duty cycle of the coil body 32. Alternatively, a structure in which the conductor portions 16B formed by stamping are fixed to the substrate 34 can be adopted. When the conductor portions 16B are formed by stamping, in order to ensure the strength of the die punch forming the conductor portions 16B, the narrow gap between adjacent conductor portions 16B in the circumferential direction sometimes has a limit, necessitating a sacrifice in the duty cycle. However, in this embodiment, since the circumferential spacing of the conductor portions 16B on the substrate 34 is widened, such a problem is less likely to occur.

[0081] Further, in the present embodiment, the width dimension Wl in the circumferential direction of the conductor portion 16B formed on the substrate 34 of one layer gradually decreases toward the substrate 34 of the other layer. Further, the width dimension Wl in the circumferential direction of the conductor portion 16B formed on the substrate 34 of the other layer gradually decreases toward the substrate 34 of one layer. Thus, when the substrate 34 of one layer and the substrate 34 of the other layer are overlapped, the plurality of conductor portions 16B formed on the substrate 34 of the other layer can be easily arranged between the plurality of conductor portions 16B formed on the substrate 34 of one layer. Further, in the present embodiment, the patterns of the plurality of coil portions 16 formed on the substrates 34 of the respective layers are identical to each other. Thus, it is not necessary to set the pattern of the coil portion 16 for each substrate 34 of the respective layers.

[0082] (Second Embodiment) Using Figures 9-13 The motor of the second embodiment will be described. Further, in the motor of the second embodiment, the same symbols are attached to the members and parts corresponding to those of the motor 10 and the like which have already been described, and the description thereof is sometimes omitted.

[0083] Figure 9 , Figure 10 , Figure 11 and Figure 12 are drawings corresponding to Figure 3 , Figure 4 , Figure 6 and Figure 7 used in the description of the motor 10 of the first embodiment, respectively. As shown in these drawings, in the motor of the present embodiment, the same as the motor 10 of the above-described first embodiment, except that the plumb portion 36 formed on the side face 34A of the substrate 34 and the plumb portion 36 formed on the other side face 34B of the substrate 34 are arranged so as to be offset in the circumferential direction.

[0084] Figure 13 is a drawing corresponding to Figure 8 used in the description of the motor 10 of the first embodiment. As shown in this drawing, in the state where the substrate 34 of one layer and the substrate 34 of the other layer are stacked in the radial direction, the conductor portion 16B formed on the substrate 34 of one layer and the conductor portion 16B formed on the substrate 34 of the other layer are alternately arranged in the circumferential direction. Further, in the state where the substrate 34 of one layer and the substrate 34 of the other layer are stacked in the radial direction, the plurality of conductor portions 16B formed on the substrate 34 of one layer and the plurality of conductor portions 16B formed on the substrate 34 of the other layer are overlapped in the circumferential direction. Thus, also in the coil body 32 of the motor of the present embodiment, it is possible to improve the duty factor as in the above-described motor 10.

[0085] (Third Embodiment) UsingFigure 14 The motor of the third embodiment will be described. In the motor of the third embodiment, components and parts corresponding to those of the motor 10 and the like already described are denoted by the same symbols as those of the motor 10 and the like, and the description thereof will be omitted at times.

[0086] Figure 14 A schematic view of a cross section of the stator 14 of the motor of the third embodiment after being cut in the axial and circumferential directions is shown. As shown in the drawing, the structure of the coil body 32 constituting a part of the stator 14 is the same as that of the coil body 32 of the motor of the second embodiment described above.

[0087] Here, in the stator 14 of the motor of the present embodiment, the conductor portions 16B formed on the substrates 34 of the layers arranged opposite to the stator core portions 26 are engaged with the stator core portions 26 in a concave-convex manner. In detail, a plurality of engagement convex portions 26A protruding toward the axial direction side are formed on the face of the stator core portions 26 on the side of the coil bodies 32. Further, these engagement convex portions 26A are respectively engaged between a pair of conductor portions 16B formed on the substrates 34 of the layers arranged opposite to the stator core portions 26. By so constituting, the fixation of the coil bodies 32 with respect to the stator core portions 26 can be performed. Further, the plurality of engagement convex portions 26A can function as pole teeth. The pole teeth are a part of the stator core portion in which a coil is formed by winding a conductive wire. Further, in the stator 14 of the motor of the present embodiment, the conductor portions 16B formed on the substrates 34 of the layers arranged opposite to the stator core portions 26 are brought into a state of entering the axial direction side of the stator core portions 26, so that the lengthening of the distance from the face of the axial direction side of the stator core portions 26 to the face of the axial direction side of the coil bodies 32 can be suppressed.

[0088] (Fourth Embodiment) Use Figure 15 The motor of the fourth embodiment will be described. In the motor of the fourth embodiment, components and parts corresponding to those of the motor 10 and the like already described are denoted by the same symbols as those of the motor 10 and the like, and the description thereof will be omitted at times.

[0089] Figure 15 A schematic view of a cross section of the stator 14 of the motor of the fourth embodiment after being cut in the axial and circumferential directions is shown. As shown in the drawing, the structure of the stator 14 of the motor of the fourth embodiment is the same as that of the stator 14 of the motor of the third embodiment described above except for the point described later.

[0090] In the coil body 32 of the motor of the fourth embodiment, the width dimension W1 in the circumferential direction of the conductor portion 16B that is engaged with the stator core portion 26 is set to a dimension smaller than the width dimension W1 in the circumferential direction of the conductor portion 16B that is not engaged with the stator core portion 26. Specifically, the width dimension W1 in the circumferential direction of the conductor portion 16B formed on the surface of the substrate 34 on the stator core portion 26 side is set to a dimension smaller than the width dimension W1 in the circumferential direction of the conductor portion 16B formed on the surface of the substrate 34 on the side opposite to the stator core portion 26. Further, the width dimension W2 in the circumferential direction of the engagement protrusion 26A is set to a dimension larger than the width dimension in the circumferential direction of the engagement protrusion 26A of the motor of the above-described third embodiment. Further, the width dimension W1 in the circumferential direction of the conductor portion 16B that is engaged with the stator core portion 26 is set to a dimension smaller than the width dimension W2 in the circumferential direction of the engagement protrusion 26A. With this configuration, in the stator 14 of the motor of the fourth embodiment, as compared with the stator 14 of the motor of the third embodiment, an effect of shortening the magnetic gap G1 between the magnet 18 and the stator core portion 26 can be obtained. Thereby, the output of the motor can be improved.

[0091] (Fifth Embodiment) Use Figure 16 The motor of the fifth embodiment will be described. In the motor of the fifth embodiment, components and parts corresponding to those of the motor 10 and the like that have already been described are denoted by the same symbols as those of the motor 10 and the like, and the description thereof is sometimes omitted.

[0092] Figure 16 A schematic view showing a cross section of the stator 14 of the motor of the fifth embodiment after being cut in the axial direction and the circumferential direction is shown. As shown in the drawing, the structure of the coil body 32 that constitutes a part of the stator 14 is the same as that of the coil body 32 of the motor of the above-described first embodiment. Further, the structure of the stator core portion 26 that constitutes a part of the stator 14 is the same as that of the stator core portion 26 of the motor of the above-described third embodiment.

[0093] In the stator 14 of the motor of the fifth embodiment described above, the same effects as those of the stator 14 of the motor of the above-described third embodiment can be obtained.

[0094] (Sixth Embodiment) Use Figure 17 The motor of the sixth embodiment will be described. In the motor of the sixth embodiment, components and parts corresponding to those of the motor 10 and the like that have already been described are denoted by the same symbols as those of the motor 10 and the like, and the description thereof is sometimes omitted.

[0095] Figure 17A cross-sectional view of the stator 14 of the motor of the sixth embodiment, taken along the axial and circumferential directions, is shown. As shown in the drawing, in the coil body 32 that constitutes a portion of the stator 14, the width dimension Wl in the circumferential direction of the conductor portion 16B formed on the substrate 34 disposed on the most stator core portion 26 side is set to a dimension smaller than the width dimension Wl in the circumferential direction of the conductor portion 16B formed on the substrate 34 other than this. Further, the structure of the stator core portion 26 that constitutes a portion of the stator 14 is the same as that of the stator core portion 26 of the motor of the fourth embodiment described above.

[0096] In the stator 14 of the motor of the sixth embodiment described above, the same effects as those of the stator 14 of the motor of the fourth embodiment described above can also be obtained.

[0097] (Seventh Embodiment) Use Figure 18 The motor of the seventh embodiment will be described. In the motor of the seventh embodiment, the same symbols are assigned to the members and portions corresponding to those of the motor 10 and the like that have already been described, and the description thereof is sometimes omitted.

[0098] Figure 18 A cross-sectional view of the stator 14 of the motor of the seventh embodiment, taken along the axial and circumferential directions, is shown. As shown in the drawing, the structure of the coil body 32 that constitutes a portion of the stator 14 is the same as that of the coil body 32 of the motor of the second embodiment described above except for the point described later.

[0099] In the coil body 32 of the motor of the present embodiment, the thickness dimension Tl of the conductor portion 16B formed on the substrate 34 disposed on the side of the magnet 18 is set to a dimension smaller than the thickness dimension Tl of the conductor portion 16B formed on the substrate 34 disposed on the side opposite to the magnet 18. The thickness dimension Tl of the conductor portion 16B refers to the dimension of the conductor portion 16B in the direction in which the coil body 32 opposes the magnet 18 (axial direction).

[0100] In the coil body 32 of the motor of the present embodiment, five substrates 34 are stacked in the axial direction. Here, the five substrates 34 are sequentially referred to as the first layer substrate 34, the second layer substrate 34, the third layer substrate 34, the fourth layer substrate 34, and the fifth layer substrate 34 from the stator core portion 26 side to the magnet 18 side.

[0101] The thickness dimension T1 of the conductor portion 16B disposed between the substrate 34 of the second layer and the substrate 34 of the third layer is set to a smaller dimension than the thickness dimension T1 of the conductor portion 16B disposed between the substrate 34 of the first layer and the substrate 34 of the second layer. Further, the thickness dimension T1 of the conductor portion 16B disposed between the substrate 34 of the third layer and the substrate 34 of the fourth layer is set to a smaller dimension than the thickness dimension T1 of the conductor portion 16B disposed between the substrate 34 of the second layer and the substrate 34 of the third layer. Further, the thickness dimension T1 of the conductor portion 16B disposed between the substrate 34 of the fourth layer and the substrate 34 of the fifth layer is set to a smaller dimension than the thickness dimension T1 of the conductor portion 16B disposed between the substrate 34 of the third layer and the substrate 34 of the fourth layer. Here, Figure 18 The arrow T2 indicates the flux linkage, and the arrow T3 indicates the leakage flux. By reducing the thickness dimension T1 of the conductor portion 16B formed on the substrate 34 of the layer on the side of the magnet 18 in which the leakage flux T3 is circumferentially linked, it is possible to reduce so-called eddy current loss. Further, by increasing the thickness dimension T1 of the conductor portion 16B formed on the substrate 34 of the layer on the side opposite to the magnet 18 in which the flux linkage is less, it is possible to reduce so-called direct current loss.

[0102] (Eighth Embodiment) Use Figure 19 The eighth embodiment motor will be described. Further, in the eighth embodiment motor, the same symbols are attached to the members and parts corresponding to those of the motor 10 and the like that have already been described, and the description thereof is sometimes omitted.

[0103] Figure 19 A schematic view of a cross section of the stator 14 of the eighth embodiment motor after being cut in the axial and circumferential directions is shown. As shown in the drawing, the basic structure of the coil body 32 that constitutes a part of the stator 14 is the same as that of the coil body 32 of the motor of the above-described first embodiment. Further, in the coil body 32 of the motor of the present embodiment, the thickness dimension T1 of each conductor portion 16B is set to the same dimension as that of the coil body 32 of the motor of the above-described seventh embodiment.

[0104] The same effects as those of the coil body 32 of the motor of the seventh embodiment can also be obtained in the coil body 32 of the motor of the present embodiment described above.

[0105] (Ninth Embodiment) Use Figure 20 The ninth embodiment motor will be described. Further, in the ninth embodiment motor, the same symbols are attached to the members and parts corresponding to those of the motor 10 and the like that have already been described, and the description thereof is sometimes omitted.

[0106] Figure 20 are the same as those used in the explanation of the motor 10 of the first embodiment Figure 4 Corresponding view. As shown in this view, the coil body 32 of the motor of the present embodiment has the same structure as the coil body 32 of the motor 10 of the first embodiment except for the following points. In the coil body 32 of the motor of the present embodiment, the plurality of coil portions 16 of the U phase formed on the first layer substrate 34 and the plurality of coil portions 16 of the U phase formed on the second layer substrate 34 are connected via the connection wire 47. Also, the plurality of coil portions 16 of the V phase formed on the first layer substrate 34 and the plurality of coil portions 16 of the V phase formed on the second layer substrate 34 are connected via the connection wire 47. Also, the plurality of coil portions 16 of the W phase formed on the first layer substrate 34 and the plurality of coil portions 16 of the W phase formed on the second layer substrate 34 are connected via the connection wire 47. Thus, in the coil body 32 of the motor of the present embodiment, compared with the coil body 32 of the motor 10 of the first embodiment, an effect of increasing the number of turns can be obtained.

[0107] (Tenth Embodiment) Use Figures 21-24 The motor of the tenth embodiment will be explained. Also, in the motor of the tenth embodiment, the same symbols are assigned to the members and parts corresponding to those of the motor 10 and the like that have already been explained, and the explanation thereof is sometimes omitted.

[0108] As Figures 21-24 shown in this view, the coil body 32 of the motor of the present embodiment is characterized in that the soft magnetic portion 150 as the magnetic body portion is formed on the substrate 34. Also, the plurality of coil portions 16 and the plurality of soft magnetic portions 150 are formed on the substrate 34. Figure 21 and Figure 23 are the same as those used in the explanation of the motor 10 of the first embodiment Figure 4 and Figure 6 Corresponding view.

[0109] Figure 23 The first layer substrate 34, the plurality of coil portions 16 formed on the substrate 34, and the plurality of soft magnetic portions 150 formed on the substrate 34 are shown. The soft magnetic portion 150 is formed on the substrate 34 using a soft magnetic material and in the same pattern as the coil portion 16. Also, in the soft magnetic portion 150, no current flows as in the coil portion 16.

[0110] In detail, the soft magnetic portion 150 includes a first extension portion B1 that is inclined toward the radially inner side as it goes toward the circumferential one side, and a second extension portion B2 that extends toward the radially inner side from the end portion of the circumferential one side of the first extension portion B1. In addition, the soft magnetic portion 150 includes a third extension portion B3 that is inclined toward the radially inner side as it goes toward the circumferential one side from the end portion of the opposite side to the first extension portion B1 in the second extension portion B2, and a fourth extension portion B4 that is inclined toward the radially outer side as it goes toward the circumferential one side from the end portion of the opposite side to the second extension portion B2 in the third extension portion B3. In addition, the soft magnetic portion 150 includes a fifth extension portion B5 that extends toward the radially outer side from the end portion of the opposite side to the third extension portion B3 in the fourth extension portion B4, and a sixth extension portion B6 that is inclined toward the radially outer side as it goes toward the circumferential one side from the end portion of the opposite side to the fourth extension portion B4 in the fifth extension portion B5.

[0111] Here, the first extension portion B1, the second extension portion B2, and the third extension portion B3 are formed on the side of the face 34B on the one side of the substrate 34 (the face on the stator core portion 26 side). In addition, the fourth extension portion B4, the fifth extension portion B5, and the sixth extension portion B6 are formed on the side of the face 34B on the other side of the substrate 34 (the face on the opposite side to the stator core portion 26). As an example, the third extension portion B3 and the fourth extension portion B4 are electrically connected via a via hole or a through hole, or the like, which is not illustrated. In addition, in the Figure 23 , the portion of the soft magnetic portion 150 that is formed on the face 34B on the one side of the substrate 34 is indicated by a solid line. In addition, the portion of the soft magnetic portion 150 that is formed on the face 34B on the other side of the substrate 34 is indicated by a broken line.

[0112] Furthermore, the first extension portion B1, the second extension portion B2, and the third extension portion B3 of each soft magnetic portion 150 are arranged between the first extension portion A1, the second extension portion A2, and the third extension portion A3 of one coil portion 16 and the first extension portion A1, the second extension portion A2, and the third extension portion A3 of another coil portion 16 that are adjacent in the circumferential direction. In addition, the fourth extension portion B4, the fifth extension portion B5, and the sixth extension portion B6 of each soft magnetic portion 150 are arranged between the fourth extension portion A4, the fifth extension portion A5, and the sixth extension portion A6 of one coil portion 16 and the fourth extension portion A4, the fifth extension portion A5, and the sixth extension portion A6 of another coil portion 16 that are adjacent in the circumferential direction.

[0113] The substrate 34 of the second layer that overlaps the substrate 34 of the first layer, the plurality of coil portions 16 formed on the substrate 34 of the second layer, and the plurality of soft magnetic portions 150 formed on the substrate 34 of the second layer also have the same structure as the substrate 34 of the first layer, the plurality of coil portions 16 formed on the substrate 34 of the first layer, and the plurality of soft magnetic portions 150 formed on the substrate 34 of the first layer.

[0114] Figure 21 andFigure 22 FIGS. 6A and 6B show diagrams schematically showing a state in which the substrate 34 of the first layer overlaps the substrate 34 of the second layer. As shown in these diagrams, the portions of the coil portion 16 formed on the substrate 34 of the first layer and the portions of the coil portion 16 formed on the substrate 34 of the second layer are alternately arranged in the circumferential direction and overlap in the circumferential direction. In addition, the portions of the soft magnetic portion 150 formed on the substrate 34 of the first layer and the portions of the soft magnetic portion 150 formed on the substrate 34 of the second layer are alternately arranged in the circumferential direction and overlap in the circumferential direction.

[0115] The area factor can also be improved in the coil body 32 of the present embodiment described above. Thus, high efficiency and high torque can be achieved while suppressing an increase in the size of the motor. In addition, in the stator 14 configured to include the coil body 32 of the present embodiment, each soft magnetic portion 150 can function like a tooth.

[0116] (Eleventh Embodiment) Use Figures 25-27 The motor of the eleventh embodiment will be described. In the motor of the eleventh embodiment, the same symbols are assigned to members and portions corresponding to those of the motor 10 and the like that have already been described, and the description thereof is sometimes omitted.

[0117] As Figure 25 and Figure 26 shown, the stator 14 of the motor of the present embodiment is characterized in that a plurality of tooth portions 26B formed in the stator core portion 26 are inserted into a plurality of substrates 34 that constitute a part of the coil body 32. In addition, the plurality of tooth portions 26B are arranged in the circumferential direction at equal intervals. Figure 25 and used in the following description Figure 27 are diagrams corresponding to Figure 4 and Figure 6 used in the description of the motor 10 of the first embodiment, respectively.

[0118] In detail, the stator core portion 26 includes a ring-shaped portion 26C that is formed in a plate shape with the axial direction as the thickness direction and is formed in a ring shape when viewed in the axial direction, and a plurality of tooth portions 26B that protrude from the ring-shaped portion 26C toward the coil body 32 side (the axial direction one side) and are arranged at equal intervals in the circumferential direction. The plurality of tooth portions 26B are formed in a cuboid shape. In addition, the shape of the plurality of tooth portions 26B when viewed from the axial direction one side is a rectangular shape with the radial direction as the length direction.

[0119] Figure 27 FIG. 7 shows the substrate 34 of the first layer and the plurality of coil portions 16 formed on the substrate 34. As shown in this diagram, the plurality of tooth portions 26B (refer to FIG. 6) are formed in the substrate 34. In addition, the plurality of coil portions 16 are formed in the substrate 34. Figure 25corresponding number of pole tooth portion insertion holes 34H. The pole tooth portion insertion holes 34H are rectangular in shape with the radial direction as the length direction, as viewed from the axial direction. Also, as with the first layer of the substrates 34, the pole tooth portion insertion holes 34H are formed in the other layers of the substrates 34.

[0120] Furthermore, with the plurality of pole tooth portions 26B respectively inserted into the plurality of pole tooth portion insertion holes 34H formed in the plurality of substrates 34, the coil body 32 is supported to the stator core portion 26.

[0121] The space factor can also be improved in the coil body 32 of the stator 14 of the present embodiment described above. Thus, high efficiency and high torque can be achieved while suppressing an increase in the size of the motor. Also, in the stator 14 of the present embodiment, by inserting the plurality of pole tooth portions 26B into the plurality of pole tooth portion insertion holes 34H, respectively, the coil body 32 can be prevented from being twisted in the circumferential direction with respect to the stator core portion 26.

[0122] (Twelfth Embodiment) Using Figure 28 and Figure 29 , the motor of the twelfth embodiment will be described. Also, in the motor of the twelfth embodiment, the same symbols are assigned to the members and portions corresponding to those of the motor 10 and the like that have already been described, and the description thereof will be omitted at times.

[0123] Figure 28 and Figure 29 are drawings corresponding to Figure 4 and Figure 6 used in the description of the motor 10 of the first embodiment, respectively. As shown in these drawings, the coil body 32 of the motor of the present embodiment is configured in the same manner as the motor 10 of the above-described first embodiment, except that the portions of the coil portion 16 corresponding to the first extension portion Al, the second extension portion A2, and the third extension portion A3 are linear, and the portions corresponding to the fourth extension portion A4, the fifth extension portion A5, and the sixth extension portion A6 are linear. The space factor can also be improved in the coil body 32 of the motor of the present embodiment. Thus, high efficiency and high torque can be achieved while suppressing an increase in the size of the motor 10.

[0124] (Thirteenth Embodiment) Using Figure 30 , the motor of the thirteenth embodiment will be described. Also, in the motor of the thirteenth embodiment, the same symbols are assigned to the members and portions corresponding to those of the motor 10 and the like that have already been described, and the description thereof will be omitted at times.

[0125] Figure 30This is the same as the description of the electric motor 10 in the first embodiment. Figure 8 The corresponding figure shows that, except that the stator 14 of the electric motor in this embodiment is formed on the substrate 34 of the first layer closest to the stator core 26, the stator 14 is constructed in the same manner as the stator 14 of the electric motor 10 in the first embodiment. The soft magnetic portion 150 is formed on one side surface 34A of the substrate 34 of the first layer. Furthermore, on one side surface 34A of the substrate 34 of the first layer, the conductor portion 16B of the coil portion 16 and the soft magnetic portion 150 are arranged alternately in the circumferential direction.

[0126] In the stator 14 of the electric motor described above, the soft magnetic part 150 can also function like a pole tooth in the same way as the stator 14 of the electric motor of the tenth embodiment described above.

[0127] (Fourteenth Implementation) use Figure 31 The electric motor of the fourteenth embodiment will be described. In addition, in the electric motor of the fourteenth embodiment, the components and parts corresponding to the electric motor 10 and the like that already described are marked with the same symbols as the components and parts corresponding to the electric motor 10 and the like, and sometimes their descriptions are omitted.

[0128] Figure 31 This is the same as the description of the electric motor 10 in the first embodiment. Figure 8 The corresponding figure shows that, except that the conductor portion 16B of the coil portion 16 formed on the odd-numbered layer of the substrate 34 counting from the stator core portion 26 side is replaced with a soft magnetic portion 150, the stator 14 of the electric motor 10 in this embodiment is constructed in the same way as the stator 14 of the electric motor 10 in the first embodiment. In the stator 14 of the electric motor in this embodiment, each soft magnetic portion 150 formed on the substrate 34 of one layer and each soft magnetic portion 150 formed on the substrate 34 of other layers are respectively arranged at the same position in the circumferential direction. Thus, each soft magnetic portion 150 formed on the substrate 34 of one layer and each soft magnetic portion 150 formed on the substrate 34 of other layers are configured to be stacked along the axial direction.

[0129] In the stator 14 of the electric motor described above, the soft magnetic part 150 can also function like a pole tooth in the same way as the stator 14 of the electric motor of the tenth embodiment described above.

[0130] (Fifteenth implementation method) use Figure 32 The electric motor of the fifteenth embodiment will be described. In addition, in the electric motor of the fifteenth embodiment, the components and parts corresponding to the electric motor 10 and the like that already described are marked with the same symbols as the components and parts corresponding to the electric motor 10 and the like, and their descriptions are sometimes omitted.

[0131] Figure 32 is the same as that used in the description of the motor of the fourteenth embodiment Figure 31 the corresponding figure. As shown in the figure, the stator 14 of the motor of the present embodiment is configured similarly to the stator 14 of the motor of the fourteenth embodiment except that the conductor portions 16B of a part of the coil portions 16 formed on the base plate 34 of the first even-numbered layer counted from the stator core portion 26 side are replaced with the soft magnetic portions 150. In the stator 14 of the motor of the present embodiment, each of the soft magnetic portions 150 formed on the base plate 34 of one of the odd-numbered layers and each of the soft magnetic portions 150 formed on the base plate 34 of the other of the odd-numbered layers are respectively disposed at the same position in the circumferential direction. In addition, in the stator 14 of the motor of the present embodiment, each of the soft magnetic portions 150 formed on the base plate 34 of one of the even-numbered layers and each of the soft magnetic portions 150 formed on the base plate 34 of the other of the even-numbered layers are respectively disposed at the same position in the circumferential direction. Further, each of the soft magnetic portions 150 formed on the base plate 34 of the odd-numbered layers and each of the soft magnetic portions 150 formed on the base plate 34 of the even-numbered layers are respectively adjacently disposed in the circumferential direction.

[0132] In the stator 14 of the motor of the present embodiment described above, it is also possible to cause the soft magnetic portions 150 to function as the pole teeth similarly to the stator 14 of the motor of the tenth embodiment described above.

[0133] (Sixteenth Embodiment) Use Figure 33 The motor of the sixteenth embodiment will be described. In addition, in the motor of the sixteenth embodiment, the same symbols are assigned to the members and parts corresponding to the already described motor 10 and the like, and the description thereof is sometimes omitted.

[0134] Figure 33 is the same as that used in the description of the motor 10 of the first embodiment Figure 8 the corresponding figure. As shown in the figure, the stator 14 of the motor of the present embodiment is configured similarly to the stator 14 of the motor 10 of the first embodiment except that the conductor portions 16B of a part of the coil portions 16 formed on the base plate 34 of the first odd-numbered layer counted from the stator core portion 26 side are replaced with the soft magnetic portions 150. In the stator 14 of the motor of the present embodiment, the conductor portions 16B of the coil portions 16 formed on the other side face 34B of the base plate 34 of the first layer and the fifth layer are replaced with the soft magnetic portions 150. In addition, in the stator 14 of the motor of the present embodiment, the conductor portions 16B of the coil portions 16 formed on the one side face 34A of the base plate 34 of the third layer and the seventh layer are replaced with the soft magnetic portions 150.

[0135] In the stator 14 of the electric motor described above, the soft magnetic part 150 can also function like a pole tooth in the same way as the stator 14 of the electric motor of the tenth embodiment described above.

[0136] (Seventeenth Implementation) use Figure 34 The electric motor of the seventeenth embodiment will be described. In addition, in the electric motor of the seventeenth embodiment, the components and parts corresponding to the electric motor 10 and the like that already described are marked with the same symbols as the components and parts corresponding to the electric motor 10 and the like, and sometimes their descriptions are omitted.

[0137] Figure 34 This is the same as the description of the electric motor 10 in the first embodiment. Figure 8 The corresponding figure. As shown in the figure, the stator 14 of the electric motor in this embodiment is constructed in the same manner as the stator 14 of the electric motor 10 in the first embodiment, except that the conductor portion 16B of the coil portion 16 formed on the first to third layers of the substrate 34, counted from the stator core portion 26 side, is replaced with a soft magnetic portion 150. In the stator 14 of the electric motor in this embodiment, the conductor portion 16B of the coil portion 16 formed on the other side surface 34B of the first to third layers of the substrate 34 is replaced with a soft magnetic portion 150.

[0138] In the stator 14 of the electric motor described above, the soft magnetic part 150 can also function like a pole tooth in the same way as the stator 14 of the electric motor of the tenth embodiment described above.

[0139] (Eighteenth Implementation) use Figure 35 The electric motor of the eighteenth embodiment will be described. In addition, in the electric motor of the eighteenth embodiment, the components and parts corresponding to the electric motor 10 and the like that already described are marked with the same symbols as the components and parts corresponding to the electric motor 10 and the like, and sometimes their descriptions are omitted.

[0140] Figure 35 This is the same as the description of the electric motor 10 in the first embodiment. Figure 8A corresponding view. As shown in the drawing, the stator 14 of the motor of the present embodiment is configured similarly to the stator 14 of the motor 10 of the first embodiment except that the conductor portions 16B of some or all of the coil portions 16 formed on the substrates 34 of the first, second, third, fourth, and sixth layers counted from the stator core portion 26 side are replaced with soft magnetic portions 150. In the stator 14 of the motor of the present embodiment, the conductor portions 16B of all of the coil portions 16 formed on the substrates 34 of the first and third layers are replaced with soft magnetic portions 150. Also, in the stator 14 of the motor of the present embodiment, the conductor portions 16B of some of the coil portions 16 formed on the substrates 34 of the second, fourth, and sixth layers are replaced with soft magnetic portions 150. Also, the soft magnetic portions 150 formed on the substrates 34 of the first and third layers are stacked in the axial direction, and the soft magnetic portions 150 formed on the substrates 34 of the second, fourth, and sixth layers are stacked in the axial direction. Further, the soft magnetic portions 150 formed on the substrates 34 of the first and third layers are disposed on both sides in the circumferential direction with respect to the soft magnetic portions 150 formed on the substrates 34 of the second, fourth, and sixth layers.

[0141] In the stator 14 of the motor of the present embodiment described above, the soft magnetic portions 150 can also function as the pole teeth similarly to the stator 14 of the motor of the tenth embodiment described above.

[0142] (Nineteenth Embodiment) Use Figure 36 A motor of the nineteenth embodiment will be described. Also, in the motor of the nineteenth embodiment, the same symbols are assigned to the members and portions corresponding to those of the motor 10 and the like that have already been described, and the description thereof is sometimes omitted.

[0143] Figure 36 Only the coil portions 16 formed on one side of the face 34A of one layer of the substrate 34 that constitutes the coil body 32 of the motor of the nineteenth embodiment are shown. As shown in the drawing, in the present embodiment, the width dimension W1 in the circumferential direction of the portion of the conductor portion 16B on the radially outer side is set to a dimension larger than the width dimension in the circumferential direction of the portion of the conductor portion 16B on the radially inner side. Also, a gap 152 is formed between the conductor portions 16B adjacent in the circumferential direction, and the width dimension W3 in the circumferential direction of the radially outer portion of the gap 152 is set to a dimension larger than the width dimension W3 in the circumferential direction of the radially inner portion of the gap 152.

[0144] Specifically, the width dimension W1 in the circumferential direction of the first extension portion Al constituting the radially outer portion of the conductor portion 16B is set to a dimension larger than the width dimension W1 in the circumferential direction of the third extension portion A3 constituting the radially inner portion of the conductor portion 16B. Also, the width dimension W1 in the circumferential direction of the first extension portion Al constituting the radially outer portion of the conductor portion 16B is set to a dimension larger than the width dimension W1 in the circumferential direction of the second extension portion A2 constituting the intermediate portion in the radial direction of the conductor portion 16B. Further, the width dimension W1 in the circumferential direction of the second extension portion A2 constituting the intermediate portion in the radial direction of the conductor portion 16B is set to a dimension larger than the width dimension W1 in the circumferential direction of the third extension portion A3 constituting the radially inner portion of the conductor portion 16B. Also, the width dimension W1 refers to the dimension from the end portion on one side to the end portion on the other side in the cross section of the conductor portion 16B after being cut in the axial direction and the circumferential direction. Also, the width dimension W1 in the circumferential direction of the first extension portion Al gradually increases as it goes toward the radially outer portion. Also, the width dimension W1 in the circumferential direction of the second extension portion A2 gradually increases as it goes toward the radially outer portion. Also, the width dimension W1 in the circumferential direction of the third extension portion A3 gradually increases as it goes toward the radially outer portion.

[0145] Also, the width dimension W3 in the circumferential direction of the gap 152 between the first extension portions Al of the conductor portions 16B adjacent in the circumferential direction is set to a dimension larger than the width dimension W3 in the circumferential direction of the gap 152 between the third extension portions A3 of the conductor portions 16B adjacent in the circumferential direction. Also, the width dimension W3 in the circumferential direction of the gap 152 between the first extension portions Al of the conductor portions 16B adjacent in the circumferential direction is set to a dimension larger than the width dimension W3 in the circumferential direction of the gap 152 between the second extension portions A2 of the conductor portions 16B adjacent in the circumferential direction. Further, the width dimension W3 in the circumferential direction of the gap 152 between the second extension portions A2 of the conductor portions 16B adjacent in the circumferential direction is set to a dimension larger than the width dimension W3 in the circumferential direction of the gap 152 between the third extension portions A3 of the conductor portions 16B adjacent in the circumferential direction. Also, the width dimension W3 in the circumferential direction of the gap 152 between the first extension portions Al of the conductor portions 16B adjacent in the circumferential direction gradually increases as it goes toward the radially outer portion. Also, the width dimension W3 in the circumferential direction of the gap 152 between the second extension portions A2 of the conductor portions 16B adjacent in the circumferential direction gradually increases as it goes toward the radially outer portion. Also, the width dimension W3 in the circumferential direction of the gap 152 between the third extension portions A3 of the conductor portions 16B adjacent in the circumferential direction gradually increases as it goes toward the radially outer portion.

[0146] Further, although not illustrated, the width dimension W1 in the circumferential direction of the sixth extension portion A6 constituting the radially outer portion of the conductor portion 16B is set to a dimension larger than the width dimension W1 in the circumferential direction of the fourth extension portion A4 constituting the radially inner portion of the conductor portion 16B. Further, the width dimension W1 in the circumferential direction of the sixth extension portion A6 constituting the radially outer portion of the conductor portion 16B is set to a dimension larger than the width dimension W1 in the circumferential direction of the fifth extension portion A5 constituting the radially intermediate portion of the conductor portion 16B. Further, the width dimension W1 in the circumferential direction of the fifth extension portion A5 constituting the radially intermediate portion of the conductor portion 16B is set to a dimension larger than the width dimension W1 in the circumferential direction of the fourth extension portion A4 constituting the radially inner portion of the conductor portion 16B. Further, the width dimension W1 in the circumferential direction of the sixth extension portion A6 gradually increases as it goes toward the radially outer side. Further, the width dimension W1 in the circumferential direction of the fifth extension portion A5 gradually increases as it goes toward the radially outer side. Further, the width dimension W1 in the circumferential direction of the fourth extension portion A4 gradually increases as it goes toward the radially outer side.

[0147] Further, the width dimension W3 in the circumferential direction of the gap 152 between the sixth extension portions A6 of the conductor portions 16B adjacent in the circumferential direction is set to a dimension larger than the width dimension W3 in the circumferential direction of the gap 152 between the fourth extension portions A4 of the conductor portions 16B adjacent in the circumferential direction. Further, the width dimension W3 in the circumferential direction of the gap 152 between the sixth extension portions A6 of the conductor portions 16B adjacent in the circumferential direction is set to a dimension larger than the width dimension W3 in the circumferential direction of the gap 152 between the fifth extension portions A5 of the conductor portions 16B adjacent in the circumferential direction. Further, the width dimension W3 in the circumferential direction of the gap 152 between the fifth extension portions A5 of the conductor portions 16B adjacent in the circumferential direction is set to a dimension larger than the width dimension W3 in the circumferential direction of the gap 152 between the fourth extension portions A4 of the conductor portions 16B adjacent in the circumferential direction. Further, the width dimension W3 in the circumferential direction of the gap 152 between the sixth extension portions A6 of the conductor portions 16B adjacent in the circumferential direction gradually increases as it goes toward the radially outer side. Further, the width dimension W3 in the circumferential direction of the gap 152 between the fifth extension portions A5 of the conductor portions 16B adjacent in the circumferential direction gradually increases as it goes toward the radially outer side. Further, the width dimension W3 in the circumferential direction of the gap 152 between the fourth extension portions A4 of the conductor portions 16B adjacent in the circumferential direction gradually increases as it goes toward the radially outer side.

[0148] As explained above, in the present embodiment, the width dimension W1 in the circumferential direction of the portion of the conductor portion 16B on the radially outer side is set to a dimension larger than the width dimension of the portion of the conductor portion 16B on the radially inner side. Thereby, compared to a case where the width dimension W1 in the circumferential direction of the portion of the conductor portion 16B on the radially outer side and the width dimension in the circumferential direction of the portion of the conductor portion 16B on the radially inner side are set to the same dimension, it is possible to improve the space factor of the coil body 32.

[0149] (Twentieth Embodiment) Use Figure 37 The motor of the twentieth embodiment will be explained. Also, in the motor of the twentieth embodiment, the same symbols are attached to the members and portions corresponding to those of the motor 10 and the like that have already been explained, and the explanation thereof is sometimes omitted.

[0150] Figure 37 A substrate 34 of one layer that constitutes a portion of the coil body 32 of the motor of the twentieth embodiment and a coil portion 16 formed on the substrate 34 are shown. As shown in the drawing, in the present embodiment, the range from the first extension portion Al to the second extension portion A2 that constitutes a portion of the conductor portion 16B is formed in a shape that follows an involute curve when viewed in the axial direction. Also, the range from the sixth extension portion A6 to the fifth extension portion A5 that constitutes a portion of the conductor portion 16B is formed in a shape that follows an involute curve when viewed in the axial direction. Thereby, in the present embodiment, compared to a structure where the above-mentioned portions in the conductor portion 16B are formed in a shape that does not follow an involute curve, it is possible to improve the space factor of the coil body 32.

[0151] (Twenty-first Embodiment) Use Figure 38 The motor of the twenty-first embodiment will be explained. Also, in the motor of the twenty-first embodiment, the same symbols are attached to the members and portions corresponding to those of the motor 10 and the like that have already been explained, and the explanation thereof is sometimes omitted.

[0152] Figure 38A perspective view schematically showing the coil body 32 is shown. As shown in this drawing, in the present embodiment, the connection portions 17 extend toward the radially outer side from each of the stacked substrates 34. These connection portions 17 are arranged in a manner that they are concentrated at one portion in the circumferential direction, and are aligned in the axial direction. In addition, the connection portions 17 are portions connected to each of the coil portions 16 formed on the substrates 34, and are, for example, the input portions 43 or the neutral points 44 described above. In the present embodiment, by being configured in a manner that these connection portions 17 are arranged in a manner that they are concentrated at one portion in the circumferential direction and are aligned in the axial direction, wiring between each of the connection portions 17 can be easily achieved. In addition, it is also possible to be configured in a manner that these connection portions 17 are offset from each other in the circumferential direction.

[0153] The above describes each embodiment of the present disclosure, but the present disclosure is not limited to the above, and various modifications can of course be made within the scope of the gist thereof in addition to the above. In addition, all or a part of the structure of each embodiment described above can be combined with each other.

[0154] For example, it is appropriately selected according to the use of the motor 10 or the like. In addition, the structure of the motor 10 or the like can also be applied to a generator. In addition, the structure of the motor 10 or the like can also be applied to a brushless motor of an outer rotor type in which the rotor 12 is arranged on the radially outer side of the stator 14. In addition, the structure of the present disclosure can also be applied to a rotor configured by including the coil body 32.

[0155] <Supplementary Note> (Supplementary Note 1) A coil body includes: a base member (34) that uses an insulating material and is formed in a shape extending in a radial direction, and is stacked in an axial direction; and a plurality of coil portions (16) that each uses an electrically conductive material and is formed on the base member, and has a plurality of conductor portions (16B) arranged in a circumferential direction, and is configured in a manner that the conductor portions formed on one layer of the base member and the conductor portions formed on another layer of the base member are alternately arranged in the circumferential direction, and the plurality of conductor portions formed on one layer of the base member and the plurality of conductor portions formed on another layer of the base member overlap in the circumferential direction.

[0156] (Supplementary Note 2) The coil body as described in Supplementary Note 1, wherein in the structure of the plurality of coil portions formed on one layer of the base member adjacent in the axial direction and the plurality of coil portions formed on another layer of the base member, The pattern of the plurality of the coil portions formed on the base member of one layer is identical to the pattern of the plurality of the coil portions formed on the base member of the other layer.

[0157] (PARAGRAPH 3) The coil body according to any one of PARAGRAPHS 1 to 2, wherein In the structure of the plurality of the coil portions formed on the base member of one layer and the plurality of the coil portions formed on the base member of the other layer, The width dimension (W1) in the circumferential direction of the conductor portion formed on the base member of one layer gradually decreases toward the base member of the other layer,

[0158] The width dimension in the circumferential direction of the conductor portion formed on the base member of the other layer gradually decreases toward the base member of one layer.

[0159] (PARAGRAPH 4) The coil body according to any one of PARAGRAPHS 1 to 3, wherein Further comprising a plurality of magnetic body portions (150) that are each formed of a soft magnetic material and are formed on the base member and are arranged in the circumferential direction.

[0160] (PARAGRAPH 5) The coil body according to any one of PARAGRAPHS 1 to 4, wherein A gap is formed between the conductor portions adjacent in the circumferential direction on the base member of one layer, The width dimension in the circumferential direction of the portion on the radially outer side of the gap is set to a dimension larger than the width dimension in the circumferential direction of the portion on the radially inner side of the gap.

[0161] (PARAGRAPH 6) The coil body according to any one of PARAGRAPHS 1 to 5, wherein Connection portions (17) connected to the plurality of the coil portions are respectively extended from the base member of one layer and the base member of the other layer, The connection portions respectively extended from the base member of one layer and the base member of the other layer are arranged in the axial direction.

[0162] (PARAGRAPH 7) The coil body according to any one of PARAGRAPHS 1 to 6, wherein A portion of the plurality of the coil portions constitutes the coil portions of one phase, Another portion of the plurality of the coil portions constitutes the coil portions of another phase, The conductor portions of the coil portions of the same phase are arranged in the axial direction.

[0163] (Paragraph 8) A coil body comprising: a base member (34) that uses an insulating material and is formed in a shape extending in a radial direction, and is stacked in an axial direction; and a plurality of coil portions (16) that each use an electrically conductive material and are formed on the base member, and have a plurality of conductor portions (16B) arranged in a circumferential direction; and a plurality of magnetic body portions (150) that each use a soft magnetic material and are formed on the base member, the magnetic body portion formed on the base member of one layer and the magnetic body portion formed on the base member of another layer are arranged at the same position in the circumferential direction.

[0164] (Paragraph 9) An armature (14) having the coil body described in any one of Paragraphs 1 to 8.

[0165] (Paragraph 10) The armature described in Paragraph 9, wherein further comprising an armature core portion (26) that uses a soft magnetic material and is formed in a ring shape, the coil body is arranged along the armature core portion, the conductor portion formed on the base member of the layer arranged opposite to the armature core portion is in relief fit with the protrusion portion of the armature core portion.

[0166] (Paragraph 11) The armature described in Paragraph 9, wherein further comprising an armature core portion (26) that uses a soft magnetic material and is formed in a ring shape, the coil body is arranged along the armature core portion, the conductor portion formed on the base member of the layer arranged opposite to the armature core portion is in relief fit with the protrusion portion of the armature core portion, a width dimension in the circumferential direction of the conductor portion arranged opposite to the armature core portion and in relief fit with the armature core portion is set to a dimension smaller than a width dimension in the circumferential direction of the protrusion portion of the armature core portion.

[0167] (Paragraph 12) The armature described in Paragraph 9, wherein further comprising an armature core portion (26) that uses a soft magnetic material and is formed in a ring shape, a plurality of pole tooth portions (26B) that project toward the coil body side are formed on the armature core portion, A plurality of pole tooth insertion holes (34H) for insertion of a plurality of the pole tooth portions are formed in the base member.

[0168] (Addendum 13) A rotary electric machine, the rotary electric machine (10) comprising: One of a stator (14) and a rotor (12) configured to include the armature described in any one of Addenda 9 to 12; and The other of the stator and the rotor having a magnet (18) disposed in opposition to the coil body in a radial direction.

[0169] (Addendum 14) The rotary electric machine described in Addendum 13, wherein In a case where a dimension of the conductor portion in an axial direction in which the coil body opposes the magnet is a thickness dimension (T1), A thickness dimension of the conductor portion formed on the base member of the layer disposed on the magnet side is set to a dimension smaller than a thickness dimension of the conductor portion formed on the base member of the layer disposed on the opposite side to the magnet.

[0170] While the present disclosure is described based on the embodiments, it should be understood that the present disclosure is not limited to the above-described embodiments, structures. The present disclosure also includes various modifications, modifications within the equivalent scope. In addition to this, various combinations, modes, and further, other combinations, modes including only one element, more than or less than them, also belong to the scope, the idea range of the present disclosure.

Claims

1. A coil body, the coil body (32) comprising: a base member (34) that uses an insulating material and is formed in a shape extending in a radial direction, and is stacked in an axial direction; and a plurality of coil portions (16) that respectively use an electrically conductive material and are formed on the base member, and have a plurality of conductor portions (16B) arranged in a circumferential direction, and are configured such that the conductor portions formed on one layer of the base member and the conductor portions formed on other layers of the base member are alternately arranged in the circumferential direction, and a plurality of the conductor portions formed on one layer of the base member and a plurality of the conductor portions formed on other layers of the base member overlap in the circumferential direction.

2. The coil body according to claim 1, wherein in a structure of a plurality of the coil portions formed on one layer of the base member adjacent in the axial direction and a plurality of the coil portions formed on other layers of the base member, a pattern of a plurality of the coil portions formed on one layer of the base member coincides with a pattern of a plurality of the coil portions formed on other layers of the base member.

3. The coil body according to claim 1, wherein in a structure of a plurality of the coil portions formed on one layer of the base member adjacent in the axial direction and a plurality of the coil portions formed on other layers of the base member, a width dimension (Wl) in the circumferential direction of the conductor portions formed on one layer of the base member gradually decreases toward the side of other layers of the base member, a width dimension in the circumferential direction of the conductor portions formed on other layers of the base member gradually decreases toward the side of one layer of the base member.

4. The coil body according to claim 1, further comprising: a plurality of magnetic body portions (150) that respectively use a soft magnetic material and are formed on the base member, and are arranged in the circumferential direction.

5. The coil body according to claim 1, wherein a gap is formed between the conductor portions adjacent in the circumferential direction on one layer of the base member, a width dimension in the circumferential direction of a portion on a radially outer side of the gap is set to a dimension larger than a width dimension in the circumferential direction of a portion on a radially inner side of the gap.

6. The coil body according to claim 1, wherein a connection portion (17) connected to a plurality of the coil portions is extended from one layer of the base member and other layers of the base member, the connection portions extended from one layer of the base member and other layers of the base member are arranged in the axial direction.

7. The coil body according to claim 1, wherein a portion of a plurality of the coil portions constitutes the coil portions of one phase, another portion of a plurality of the coil portions constitutes the coil portions of other phases, the conductor portions of the coil portions of the same phase are arranged in the axial direction.

8. A coil body, the coil body (32) comprising: a base member (34) that uses an insulating material and is formed in a shape extending in a radial direction, and is stacked in an axial direction; and a plurality of coil portions (16) that respectively use an electrically conductive material and are formed on the base member, and have a plurality of conductor portions (16B) arranged in a circumferential direction, and are configured such that the conductor portions formed on one layer of the base member and the conductor portions formed on other layers of the base member are alternately arranged in the circumferential direction, and a plurality of the conductor portions formed on one layer of the base member and a plurality of the conductor portions formed on other layers of the base member overlap in the circumferential direction. ​ A plurality of coil portions (16) are formed on the base member using an electrically conductive material and have a plurality of conductor portions (16B) arranged in a circumferential direction; and A plurality of magnetic body portions (150) are formed on the base member using a soft magnetic material, The magnetic body portion formed on the base member of one layer and the magnetic body portion formed on the base member of another layer are arranged at the same position in the circumferential direction.

9. An armature, The armature (14) includes the coil body according to claim 1.

10. The armature according to claim 9, further comprising an armature core portion (26) formed in a ring shape using a soft magnetic material, The coil body is arranged along the armature core portion, The conductor portion formed on the base member of the layer arranged opposite to the armature core portion is concave-convexly engaged with the armature core portion.

11. The armature according to claim 9, further comprising an armature core portion (26) formed in a ring shape using a soft magnetic material, The coil body is arranged along the armature core portion, The conductor portion formed on the base member of the layer arranged opposite to the armature core portion and a convex portion formed on the armature core portion are concave-convexly engaged, A width dimension in the circumferential direction of the conductor portion arranged opposite to the armature core portion and concave-convexly engaged is set to a dimension smaller than a width dimension in the circumferential direction of the convex portion of the armature core portion.

12. The armature according to claim 9, further comprising an armature core portion (26) formed in a ring shape using a soft magnetic material; A plurality of pole tooth portions (26B) projecting toward the coil body side are formed on the armature core portion, A plurality of pole tooth portion insertion holes (34H) into which the plurality of pole tooth portions are respectively inserted are formed in the base member.

13. A rotary electric machine, the rotary electric machine (10) comprising: one of a stator (14) and a rotor (12) including the armature according to any one of claims 9 to 12; and the other of the stator and the rotor having a magnet (18) arranged opposite to the coil body in an axial direction.

14. The rotary electric machine according to claim 13, wherein a dimension of the conductor portion in the axial direction opposite to the coil body and the magnet is set to a thickness dimension (T1), a thickness dimension of the conductor portion formed on the base member of the layer arranged on the magnet side is set to a dimension smaller than a thickness dimension of the conductor portion formed on the base member of the layer arranged on the side opposite to the magnet. ​ ​ ​

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