Coil body, armature, and rotating electrical machine

Abstract

To ensure the strength of a coil body in a configuration where base members are stacked in the axial direction.SOLUTION: A coil body 32 is formed in a radially extending shape using insulating material and has an axially stacked substrate 34. The coil body 32 further has a magnetic field generator 80 that is formed on the substrate 34 using conductive material and generates a rotating magnetic field when energized. Furthermore, the coil body 32 has a reinforcement portion 70 formed in a different area than the area where the magnetic field generator 80 is formed on the axially oriented surface in the substrate 34. This reinforcement portion 70 reinforces the substrate 34.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present disclosure relates to a coil body, an armature, and a rotating electric machine. [Background technology]

[0002] The following Patent Document 1 discloses a coil for a rotating electric machine used in a rotating electric machine such as a motor. The coil for a rotating electric machine described in this document includes multiple coil plate elements formed in a disk shape, and a predetermined wiring pattern is formed on these coil plate elements. Furthermore, these coil plate elements are joined at the inner and outer peripheries while being spaced apart from each other at their intermediate portions, thereby forming a coil plate having a predetermined coil winding pattern. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-061357 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the coil body (coil for a rotating electrical machine) having the configuration described in Patent Document 1, if the coil plate elements are thinned, it may become difficult to ensure the strength of the coil body.

[0005] In consideration of the above, an object of the present disclosure is to provide a coil body, an armature, and a rotating electric machine that can ensure strength in a configuration in which base members are stacked in the axial direction. [Means for solving the problem]

[0006] The coil body (32) that solves the above problem includes a base member (34) formed in a radially extending shape using an insulating material and stacked in the axial direction, a magnetic field generating section (80) formed on the base member using a conductive material and generating a rotating magnetic field when current is applied, and a reinforcing section (70) formed in an area of ​​the base member facing the axial direction different from the area where the magnetic field generating section is formed and reinforcing the base member. An armature (14) includes the coil body. A rotating electric machine (10, 90, 92) includes one of a stator (14) and a rotor (12) including the armature, and the other of a stator and rotor having a magnet (18) arranged axially opposite the coil body.

[0007] With this configuration, the strength of the coil body can be ensured in a configuration in which the base members are stacked in the axial direction. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of a motor, with a portion of the motor cut away; [Diagram 2] FIG. 2 is an exploded perspective view showing the motor with some components cut away; [Diagram 3] FIG. 2 is an exploded perspective view showing the coil body, with a portion of the coil body being cut away. [Figure 4] FIG. 2 is a plan view showing a schematic diagram of a coil body. [Diagram 5] FIG. 1 is a diagram illustrating a star connection. [Figure 6] FIG. 2 is a plan view showing a schematic diagram of one substrate and a coil portion and the like formed on the one substrate. [Figure 7] 2 is a cross-sectional view showing a part of a substrate of a specific layer in a coil portion of a motor and a cross section of the coil portion formed on the substrate. [Figure 8] 4A to 4C are cross-sectional views showing a part of a substrate having multiple layers and cross-sections of coil portions formed on the substrate having multiple layers in a coil portion of a motor. [Figure 9]2 is a plan view showing one substrate constituting a part of a coil body of the motor of the first embodiment, and a plurality of coil portions formed on the substrate. FIG. [Figure 10] 10 is a cross-sectional view that illustrates a cross section of the substrate, etc., taken along the line AA shown in FIG. [Figure 11] 13 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a second embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 12] 12 is a cross-sectional view that illustrates a cross section of the substrate, etc., taken along the line AA shown in FIG. 11. [Figure 13] 13 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a third embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 14] 14 is a cross-sectional view that illustrates a cross section of the substrate, etc., cut along the line AA shown in FIG. 13. [Figure 15] FIG. 11 is a side cross-sectional view that illustrates a motor according to a fourth embodiment. [Figure 16] FIG. 13 is a side cross-sectional view that illustrates a motor according to a fifth embodiment. [Figure 17] 13 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a sixth embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 18] 18 is a cross-sectional view that illustrates a cross section of the substrate, etc., taken along the line AA shown in FIG. 17. [Figure 19] 13 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a seventh embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 20] 13 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to an eighth embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 21] 13 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a ninth embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 22]23 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a tenth embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 23] 16 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to an eleventh embodiment, and a magnetic field generating section formed on the substrate. FIG. [Figure 24] 23 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a twelfth embodiment, and a magnetic field generating section formed on the substrate. FIG. [Diagram 25] FIG. 23 is a plan view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a thirteenth embodiment, and a magnetic field generating section formed on the substrate. [Figure 26] FIG. 23 is a plan view showing a schematic view of a part of one substrate constituting a part of a coil body of a motor according to a fourteenth embodiment, and a magnetic field generating section formed on the substrate. [Figure 27] FIG. 13 is a perspective view that illustrates a process of stacking substrates. [Figure 28] 27 is a plan view showing another example of an engagement portion and corresponds to FIG. 26. FIG. [Figure 29] 27 is a plan view showing another example of an engagement portion and corresponds to FIG. 26. FIG. [Diagram 30] 27 is a plan view showing another example of an engagement portion and corresponds to FIG. 26. FIG. [Diagram 31] FIG. 23 is a plan view illustrating a coil body of a motor according to a fifteenth embodiment. [Diagram 32] 32 is a cross-sectional view that illustrates a cross section of the substrate, etc., taken along the line AA shown in FIG. 31. [Diagram 33] 23 is a side cross-sectional view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a sixteenth embodiment, and a magnetic field generating section formed on the substrate, etc. FIG. [Diagram 34] 23 is a side cross-sectional view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a seventeenth embodiment, and a magnetic field generating section formed on the substrate, etc. FIG. [Diagram 35] 1A to 1C are diagrams illustrating a process of cutting a substrate or the like with a punch, showing the state before cutting. [Diagram 36] 1A to 1C are diagrams showing a schematic diagram of a process of cutting a substrate or the like with a punch, and show a state after cutting is completed. [Figure 37] FIG. 11 is a plan view showing an example in which the outer edge of a substrate has a rectangular shape. [Figure 38] FIG. 11 is a plan view showing an example in which the outer edge of a substrate has a hexagonal shape. [Figure 39] FIG. 11 is a plan view showing an example in which the outer edge of a substrate has a dodecagonal shape. [Diagram 40] FIG. 23 is a plan view showing a schematic view of a part of one substrate constituting a part of a coil body of a motor according to an eighteenth embodiment, and a magnetic field generating section formed on the substrate. [Diagram 41] 23 is a side cross-sectional view showing a schematic diagram of one substrate constituting a part of a coil body of a motor according to a nineteenth embodiment, and a magnetic field generating section formed on the substrate. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (Basic motor configuration) A basic configuration of a motor 10 according to an embodiment of the present disclosure will be described with reference to Figures 1 to 8. Note that the directions of arrows Z, R, and C shown appropriately in the figures respectively indicate one side in the rotational axial direction, the outer side in the rotational radial direction, and one side in the rotational circumferential direction of a rotor 12 described later. Furthermore, hereinafter, when the axial direction, radial direction, or circumferential direction is simply indicated, it is understood to indicate the rotational axial direction, rotational radial direction, or rotational circumferential direction of the rotor 12 unless otherwise specified. Moreover, the motor 10 and the motors of each embodiment described later are examples of rotating electric machines.

[0010] As shown in Figures 1 and 2, motor 10 is an axial gap type brushless motor in which rotor 12 as a rotor and stator 14 as an armature and a stator are arranged facing each other in the axial direction. Note that Figures 1 and 2 are drawings of motor 10 etc. shown as an example, and there are some parts that do not match the numbers of coil portions 16, the numbers of magnets 18, and the shapes of the details that will be described later.

[0011] The rotor 12 includes a rotating shaft 22 rotatably supported via a pair of bearings (not shown), a rotor core 24 fixed to the rotating shaft 22, and a plurality of magnets 18 fixed to the other axial surface of the rotor core 24. The pair of bearings are supported by a frame 21 and a frame end 23, respectively. The stator 14 and the like are housed between the frame 21 and the frame end 23.

[0012] The rotor core 24 is formed in a cylindrical shape and includes a first cylindrical portion 24A to which the rotating shaft 22 is fixed by press-fitting or the like, and a disk portion 24B extending radially outward from one axial end of the first cylindrical portion 24A. The disk portion 24B is formed in a disk shape with the thickness direction being the axial direction. A magnet 18, which will be described later, is fixed to the surface on the other axial side of the disk portion 24B.

[0013] The magnets 18 are formed using a magnetic compound having an intrinsic coercivity Hc of 400 kA / m or more and a residual magnetic flux density Br of 1.0 T or more. 11 TiN, Nd2Fe 14 B, SmFe 17 The magnets 18 are formed using a magnetic compound such as N3 or FeNi. A plurality of magnets 18 are fixed to the surface on the other axial side of the disk portion 24B of the rotor core 24. The magnets 18 whose surfaces on the other axial side are made into the N pole and the magnets 18 whose surfaces on the other axial side are made into the S pole are arranged alternately in the circumferential direction. The number of magnets 18 may be appropriately set in consideration of the output required for the motor 10, etc.

[0014] The stator 14 includes a stator core 26 serving as an armature core formed in an annular shape, and a coil body 32 arranged along one axial surface of the stator core 26. The stator 14 of the present embodiment has a teethless structure in which no part of the stator core 26 is arranged between the coil portions 16 that form part of the coil body 32.

[0015] The stator core 26 is made of a soft magnetic material such as steel. The stator core 26 is formed in a plate shape with the thickness direction being in the axial direction, and is formed in an annular shape when viewed from the axial direction. The stator core 26 is disposed coaxially with the rotor 12, and the radial center position of the stator core 26 and the radial center positions of the multiple magnets 18 fixed to the rotor core 24 coincide in the radial direction.

[0016] As shown in FIG. 3, the coil body 32 is composed of a plurality of substrates 34 serving as a base member formed in a sheet shape using an insulating material, and a plurality of coil portions 16 formed on each of the plurality of substrates 34.

[0017] The substrate 34 is formed in a plate shape with the thickness direction being the axial direction, and is formed in a ring shape when viewed from the axial direction. The substrate 34 may be a flexible substrate that can be curved in its thickness direction, or may be a substrate that cannot be curved in its thickness direction. The coil body 32 of this embodiment has a configuration in which multiple substrates 34 are stacked in the axial direction.

[0018] 3 and 4, the multiple coil sections 16 constitute a magnetic field generating unit 80 that generates a rotating magnetic field, and are formed on multiple substrates 34, respectively. The multiple substrates 34 are stacked in the axial direction, so that the multiple coil sections 16 are arranged at predetermined positions in the circumferential and axial directions.

[0019] 5, the coil units 16 constituting the U phase (U-phase coil group 42U), the coil units 16 constituting the V phase (V-phase coil group 42V), and the coil units 16 constituting the W phase (W-phase coil group 42W) are connected in a star connection. That is, an end of the U-phase coil group 42U opposite to the input / output unit 43 which serves as a current input / output path, an end of the V-phase coil group 42V opposite to the input / output unit 43 which serves as a current input / output path, and an end of the W-phase coil group 42W opposite to the input / output unit 43 which serves as a current input / output path are connected at a neutral point 44.

[0020] FIG. 6 shows a first-layer substrate 34 and a plurality of coil parts 16 formed on the substrate 34. Here, 20 coil parts 16 constituting the U phase, 20 coil parts 16 constituting the V phase, and 20 coil parts 16 constituting the W phase are formed on the first-layer substrate 34. In the following description, the coil parts 16 constituting the U phase may be referred to as coil parts 16U. In addition, the coil parts 16 constituting the V phase may be referred to as coil parts 16V. In addition, the coil parts 16 constituting the W phase may be referred to as coil parts 16W. In the following description, the 20 coil parts 16 constituting the U phase may be referred to as coil parts 16U1 to 16U20. In addition, the 20 coil parts 16 constituting the V phase may be referred to as coil parts 16V1 to 16V20. In addition, the 20 coil parts 16 constituting the W phase may be referred to as coil parts 16W1 to 16W20.

[0021] More specifically, the coil portion 16U1 includes a first extension portion A1 that is inclined radially inward toward one circumferential side, and a second extension portion A2 that extends radially inward from an end of the first extension portion A1 on one circumferential side. The coil portion 16U1 also includes a third extension portion A3 that is inclined radially inward toward one circumferential side from an end of the second extension portion A2 opposite to the first extension portion A1, and a fourth extension portion A4 that is inclined radially outward toward one circumferential side from an end of the third extension portion A3 opposite to the second extension portion A2. Furthermore, the coil portion 16U1 includes a fifth extension portion A5 extending radially outward from the end of the fourth extension portion A4 opposite to the third extension portion A3, and a sixth extension portion A6 inclined radially outward from the end of the fifth extension portion A5 opposite to the fourth extension portion A4 toward one circumferential side. In the following description, the first extension portion A1 to the sixth extension portion A6 may be referred to as the conductor portion 16B. In the coil body 32 of this configuration, the conductor portions 16B are arranged regularly in the circumferential direction.

[0022] Here, the first extension A1, the second extension A2, and the third extension A3 are formed on a surface 34A (a surface on the stator core 26 side and facing the other axial direction) of the substrate 34. The fourth extension A4, the fifth extension A5, and the sixth extension A6 are formed on a surface 34B (a surface on the opposite side of the stator core 26 and facing the one axial direction) of the substrate 34. The third extension A3 and the fourth extension A4 are electrically connected to each other via a via hole or a through hole (not shown) as an example. In FIG. 6, the part of the coil part 16U1 formed on the surface 34A of the substrate 34 is indicated by a solid line. In addition, the part of the coil part 16U1 formed on the surface 34B of the substrate 34 is indicated by a dashed line.

[0023] The second extension portion A2 and the fifth extension portion A5 described above may be referred to as a vertical portion 36. The first extension portion A1 and the sixth extension portion A6 may be referred to as an outer coil end portion 38A which is one of the coil end portions, and the third extension portion A3 and the fourth extension portion A4 may be referred to as an inner coil end portion 38B which is the other of the coil end portions. Since one coil portion 16 has the first extension portion A1 to the sixth extension portion A6, the shape of one coil portion 16U1 when viewed from the thickness direction of the substrate 34 is a substantially V-shaped (U-shaped) shape with the radially outer side of the substrate 34 open and the radially inner side closed.

[0024] The other coil sections 16U2 to 16U20 constituting the U phase are configured similarly to the coil section 16U1, that is, all the coil sections 16 constituting the U phase have substantially the same configuration.

[0025] The coil portion 16U2 connected to the coil portion 16U1 is disposed on one circumferential side of the coil portion 16U1. The coil portion 16U3 connected to the coil portion 16U2 is disposed on one circumferential side of the coil portion 16U2. The coil portion 16U4 connected to the coil portion 16U3 is disposed on one circumferential side of the coil portion 16U3. The coil portion 16U5 connected to the coil portion 16U4 is disposed on one circumferential side of 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 intersect when viewed from the axial direction. As a result, the end of the coil portion 16U5 connected to the coil portion 16U6 is located on one circumferential side of the end of the coil portion 16U1 on the input / output portion 43 side.

[0026] Moreover, the coil portion 16U6 connected to the coil portion 16U5 is disposed on one circumferential side of the coil portion 16U5 and is disposed adjacent to the coil portion 16U1 in the circumferential direction. Moreover, the coil portion 16U7 connected to the coil portion 16U6 is disposed on one circumferential side of the coil portion 16U6 and is disposed adjacent to the coil portion 16U2 in the circumferential direction. Moreover, the coil portion 16U8 connected to the coil portion 16U7 is disposed on one circumferential side of the coil portion 16U7 and is disposed adjacent to the coil portion 16U3 in the circumferential direction. Moreover, the coil portion 16U9 connected to the coil portion 16U8 is disposed on one circumferential side of the coil portion 16U8 and is disposed adjacent to the coil portion 16U4 in the circumferential direction. Moreover, the coil portion 16U10 connected to the coil portion 16U9 is disposed on one circumferential side of the coil portion 16U9 and is disposed adjacent to the coil portion 16U5 in the circumferential direction. The end of coil section 16U10 opposite coil section 16U9 is a neutral point 44.

[0027] The coil parts 16U11 to 16U20 connected in parallel to the coil parts 16U1 to 16U10 are configured similarly to the coil parts 16U1 to 16U10. The coil parts 16U11 to 16U20 are arranged offset by 36° to the other circumferential side with respect to the coil parts 16U1 to 16U10. As a result, the vertical parts 36 of the coil parts 16U11 to 16U20 and the vertical parts 36 of the coil parts 16U1 to 16U10 are arranged at the same circumferential position. Here, the coil parts 16U1 to 16U10 connected in series are called conductor layers 33, and the coil parts 16U1 to 16U10 connected in series are called conductor layers 33. In this embodiment, two conductor layers 33U of the U phase are provided on one substrate 34.

[0028] Although detailed description of the coil parts 16V1 to 16V20 constituting the V phase is omitted, the coil parts 16V1 to 16V20 constituting the V phase have the same configuration as the coil parts 16U1 to 16U20 constituting the U phase. The coil parts 16V1 to 16V20 constituting the V phase are arranged offset by 12° to the other circumferential side with respect to the coil parts 16U1 to 16U20 constituting the U phase. Here, the coil parts 16V1 to 16V10 connected in series are called the conductor layer 33, and the coil parts 16V1 to 16V10 connected in series are called the conductor layer 33. In this embodiment, two conductor layers 33V of the V phase are provided on one substrate 34. The coil parts 16W1 to 16W20 constituting the W phase have the same configuration as the coil parts 16U1 to 16U20 constituting the U phase. Coil portions 16W1 to 16W20 constituting the W phase are arranged offset by 12° to the other circumferential side from coil portions 16V1 to 16V20 constituting the V phase. Here, coil portions 16W1 to 16W10 connected in series are referred to as conductor layer 33, and coil portions 16W1 to 16W10 connected in series are referred to as conductor layer 33. In this embodiment, two conductor layers 33W of the W phase are provided on one substrate 34.

[0029] The second layer substrate 34 overlapped with the first layer substrate 34 and the multiple coil portions 16 formed on the second layer substrate 34 are configured similarly to the first layer substrate 34 and the multiple coil portions 16 formed on the first layer substrate 34. In this embodiment, the pattern of the multiple coil portions 16 formed on the first layer substrate 34 matches the pattern of the multiple coil portions 16 formed on the second layer substrate 34. The multiple coil portions 16 formed on the second layer substrate 34 are offset by 6° to the other circumferential side from the multiple coil portions 16 formed on the first layer substrate 34. Then, the first layer substrate 34 and the second layer substrate 34 are overlapped in the axial direction, so that the multiple coil portions 16 formed on the first layer substrate 34 and the multiple coil portions 16 formed on the second layer substrate 34 are arranged at predetermined positions in the circumferential and axial directions.

[0030] Here, Fig. 4 shows a schematic diagram of a state in which the first layer substrate 34 and the second layer substrate 34 are stacked. In this figure, each part of the coil section 16 arranged between the first layer substrate 34 and the second layer substrate 34 is shown by a solid line, and each other part of the coil section 16 is shown by a dashed line. As shown in this figure, each part of the coil section 16 formed on the first layer substrate 34 and each part of the coil section 16 formed on the second layer substrate 34 are alternately arranged in the circumferential direction and overlap each other in the circumferential direction. This point will be described in detail later using Figs. 7 and 8, which are more simplified.

[0031] The third layer substrate 34 and the fourth layer substrate 34 are also stacked in the same relationship as the first layer substrate 34 and the second layer substrate 34. Even in a configuration having five or more (three layers) substrates 34, the substrates 34 are also stacked in the same relationship as the first layer substrate 34 and the second layer substrate 34. The number of layers of the coil body 32 (the number of layers of substrates 34) may be appropriately set in consideration of the output required for the motor 10, etc.

[0032] 7 and 8 show cross sections of a part of the coil body 32 cut along the axial direction and the circumferential direction. In detail, FIG. 7 shows a cross section of a part of the substrate 34 of a specific layer and the coil section 16 (conductor section 16B) formed on the substrate 34. FIG. 8 shows a cross section of a part of the substrates 34 of a plurality of layers and the coil section 16 (conductor section 16B) formed on each of the substrates 34 of a plurality of layers. Note that hatching of the cross section is omitted in FIG. 7 and FIG. 8. As shown in FIG. 7 and FIG. 8, in this embodiment, when the substrate 34 of one layer and the substrate 34 of the other layer are stacked in the axial direction, the conductor section 16B formed on the substrate 34 of the one layer and the conductor section 16B formed on the substrate 34 of the other layer are alternately arranged along the circumferential direction. Also, when the substrate 34 of the one layer and the substrate 34 of the other layer are stacked in the axial direction, the plurality of conductor sections 16B formed on the substrate 34 of the one layer and the plurality of conductor sections 16B formed on the substrate 34 of the other layer are overlapped in the circumferential direction. Furthermore, as shown in Figures 4, 6, 7 and 8, when a substrate 34 of one layer is stacked with a substrate 34 of another layer in the axial direction, the conductor portions 16B (vertical portions 36) of the coil portions 16 of the same phase are arranged side by side in the axial direction.

[0033] In this embodiment, the circumferential width W1 of the conductor 16B formed on the substrate 34 of the first layer gradually decreases toward the substrate 34 of the second layer. The circumferential width W1 of the conductor 16B formed on the substrate 34 of the second layer gradually decreases toward the substrate 34 of the first layer.

[0034] (Action and Effects) Next, the operation and effects of the motor 10 of this embodiment will be described.

[0035] 1, 2, 4, and 5, in the motor 10 of this embodiment, a rotating magnetic field is generated in the stator 14 by switching the energization of the U-phase coil group 42U, the V-phase coil group 42V, and the W-phase coil group 42W that constitute a part of the stator 14. This causes the rotor 12 to rotate.

[0036] Here, the coil body 32 includes a plurality of substrates 34 and a plurality of coil portions 16 formed on each of the substrates 34. The substrates 34 are stacked in the axial direction, thereby disposing the coil portions 16 at predetermined positions in the circumferential and axial directions. With this configuration, it is possible to prevent the coil body 32 from becoming large in size in the axial direction, compared to a configuration having a coil in which a winding is wound around teeth. As a result, it is possible to prevent the motor 10 from becoming large in size.

[0037] (Configuration for Ensuring Strength of Coil Body 32) Next, the configuration of each embodiment for ensuring the strength of the coil body 32 will be described.

[0038] (First embodiment) The coil body 32 of the motor of the first embodiment will be described with reference to Figures 9 and 10. Note that, in the motor of the first embodiment, members and parts corresponding to those of the motor 10 described above are denoted by the same reference numerals as those of the motor 10 described above, and descriptions thereof may be omitted.

[0039] 9 shows one substrate 34 constituting a part of the coil body 32 of the motor of the first embodiment, and a plurality of coil portions 16 formed on the substrate 34. As shown in this figure, in the coil body 32 of this embodiment, a reinforcing portion 70 for ensuring the strength of the coil body 32 is formed on the substrate 34.

[0040] Here, the region on the radially middle portion of the substrate 34 where the coil portion 16 (magnetic field generating portion 80) is formed will be referred to as the coil portion forming region J1. Also, the region on the radially outer end portion of the substrate 34 where the coil portion 16 (magnetic field generating portion 80) is not formed will be referred to as the first end portion J2. Furthermore, the region on the radially inner end portion of the substrate 34 where the coil portion 16 (magnetic field generating portion 80) is not formed will be referred to as the second end portion J3.

[0041] As shown in FIG. 9 and FIG. 10, the reinforcing portion 70 is formed on the one side surface 34A and the other side surface 34B in the first end region J2 of the substrate 34. In addition, the reinforcing portion 70 is formed on the one side surface 34A and the other side surface 34B in the second end region J3 of the substrate 34. In other words, the reinforcing portion 70 is formed only in the first end region J2 and the second end region J3 of the substrate 34, and the reinforcing portion 70 is not formed in the coil portion forming region J1 of the substrate 34. In addition, the reinforcing portion 70 formed in the first end region J2 is formed continuously over the entire range in the circumferential direction. Furthermore, the reinforcing portion 70 formed in the second end region J3 is formed continuously over the entire range in the circumferential direction. As a result, the reinforcing portion 70 formed in the first end region J2 and the reinforcing portion 70 formed in the second end region J3 are formed in an annular shape when viewed from the axial direction.

[0042] The reinforcing portion 70 is formed, for example, using copper, which is the same material as the coil portion 16 constituting the magnetic field generating portion 80. In this embodiment, the reinforcing portion 70 is formed on the substrate 34 when the magnetic field generating portion 80 is formed on the substrate 34. Note that the magnetic field generating portion 80 and the reinforcing portion 70 are formed into a predetermined pattern, for example, by a process called etching. The thickness dimension t1 of the reinforcing portion 70 is set to the same dimension as the thickness dimension t2 of the magnetic field generating portion 80. In this embodiment, the reinforcing portion 70 and the magnetic field generating portion 80 are not electrically connected to each other.

[0043] In the coil body 32 of the motor of this embodiment described above, the first end region J2 and the second end region J3 of each substrate 34 are configured to be reinforced by the reinforcing portion 70. This ensures the strength of the coil body 32 compared to a configuration in which the reinforcing portion 70 is not provided. Also, the rigidity of the coil body 32 can be ensured. Furthermore, the annular shape of the coil body 32 can be maintained with high precision. Also, by configuring the coil portion forming region J1 to have no reinforcing portion 70, it is possible to suppress unnecessary weight increase.

[0044] Furthermore, in this embodiment, when the first end region J2 and the second end region J3 of the substrate 34 are held by a robot or the like during assembly of the coil body 32, deformation of the first end region J2 and the second end region J3 of the substrate 34 can be suppressed. This improves the handleability of the substrate 34 in the manufacturing process of the coil body 32. Furthermore, by holding only the portion of the substrate 34 reinforced by the reinforcing portion 70 by a robot or the like, contact of the robot with the magnetic field generating unit 80 can be prevented or suppressed.

[0045] In this embodiment, the thickness dimension t1 of the reinforcing portion 70 is set to the same dimension as the thickness dimension t2 of the magnetic field generating portion 80. This makes it possible to prevent the reinforcing portion 70 from hindering the reduction of the clearance between the magnetic field generating portion 80 formed on one substrate 34 and the magnetic field generating portion 80 formed on the other substrate 34 that are adjacent in the axial direction. As a result, it is possible to prevent the provision of the reinforcing portion 70 from reducing the space factor of the coil body 32. Note that a configuration in which the thickness dimension t1 of the reinforcing portion 70 is set to a dimension smaller than the thickness dimension t2 of the magnetic field generating portion 80 may be adopted. The thickness dimension of the reinforcing portion 70 may be set appropriately taking into consideration the strength, rigidity, and the like required for the coil body 32.

[0046] Second embodiment The coil body 32 of the motor of the second embodiment will be described with reference to Figures 11 and 12. Note that in the motor of the second embodiment, members and parts corresponding to those of the motor 10 and the motor of the first embodiment are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0047] 11 and 12 are schematic diagrams showing one substrate 34 constituting a part of the coil body 32 of the motor of the second embodiment, a magnetic field generating section 80 formed on the substrate 34, and the like. As shown in these figures, in the coil body 32 of this embodiment, reinforcing sections 70 for ensuring the strength of the coil body 32 are formed on one side 34A and the other side 34B in the first end region J2 of the substrate 34. In other words, the reinforcing section 70 is formed only in the first end region J2 of the substrate 34, and is not formed in the coil section forming region J1 of the substrate 34. In the configuration of this embodiment, the strength and rigidity of the coil body 32 can be ensured, compared to a configuration in which the reinforcing section 70 is not provided.

[0048] Third embodiment The coil body 32 of the motor of the third embodiment will be described with reference to Figures 13 and 14. Note that in the motor of the third embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0049] 13 and 14 are schematic diagrams showing one substrate 34 constituting a part of the coil body 32 of the motor of the third embodiment, a magnetic field generating section 80 formed on the substrate 34, and the like. As shown in these figures, in the coil body 32 of this embodiment, reinforcing sections 70 for ensuring the strength of the coil body 32 are formed on one side 34A and the other side 34B in the second end region J3 of the substrate 34. In other words, the reinforcing section 70 is formed only in the second end region J3 of the substrate 34, and is not formed in the coil section forming region J1 of the substrate 34. In the configuration of this embodiment, the strength and rigidity of the coil body 32 can be ensured, compared to a configuration in which the reinforcing section 70 is not provided.

[0050] (Fourth embodiment) A motor 90 of the fourth embodiment will be described with reference to Fig. 15. Note that in the motor 90 of the fourth embodiment, members and parts corresponding to the above-mentioned motor 10 and the motors of each embodiment are denoted by the same reference numerals as the members and parts corresponding to the above-mentioned motor 10, etc., and descriptions thereof may be omitted.

[0051] 15, like the motor 10 described above, the motor 90 of this embodiment is a motor (herein referred to as a "single gap motor") in which the magnet 18 of the rotor 12 is disposed on only one axial side of the stator 14. The coil body 32 of the motor 90 of this embodiment has a similar configuration to the coil body 32 of the motor of the first embodiment described above. The coil body 32 of this embodiment has a configuration in which two substrates 34 are stacked.

[0052] Here, in the motor 90 of this embodiment, the magnetic field generating section 80 formed on each substrate 34 is arranged at the same position in the radial direction as the magnet 18 of the rotor 12. That is, the magnetic field generating section 80 formed on each substrate 34 is arranged on the axial extension of the magnet 18 of the rotor 12. Also, the reinforcing section 70 formed on each substrate 34 is arranged at a position offset in the radial direction from the magnet 18 of the rotor 12. That is, the reinforcing section 70 formed on each substrate 34 is not arranged on the axial extension of the magnet 18 of the rotor 12. By doing so, in the motor 90 of this embodiment, the eddy current loss caused by the leakage flux from the magnet 18 to the reinforcing section 70 side can be suppressed compared to a configuration in which the reinforcing section 70 formed on each substrate 34 is arranged on the axial extension of the magnet 18 of the rotor 12. This makes it possible to increase the efficiency of the motor 90.

[0053] Fifth embodiment A motor 92 of the fifth embodiment will be described with reference to Fig. 16. Note that in the motor 90 of the fifth embodiment, members and parts corresponding to the above-mentioned motor 10 and the motors of each embodiment are denoted by the same reference numerals as the members and parts corresponding to the above-mentioned motor 10, etc., and descriptions thereof may be omitted.

[0054] 16, the motor 92 of this embodiment is a motor (herein referred to as a "double gap motor") in which the magnets 18 of the rotor 12 are disposed on both axial sides of the stator 14. The coil body 32 of the motor 92 of this embodiment has a configuration similar to that of the coil body 32 of the motor of the first embodiment described above. The stator 14 of the motor 92 of this embodiment has a configuration in which two substrates 34 are stacked on one axial side of the stator core 26, and two substrates 34 are stacked on the other axial side of the stator core 26.

[0055] In the motor 92 of this embodiment, similarly to the motor 90 of the fourth embodiment, the reinforcing parts 70 formed on each substrate 34 are not disposed on the axial extension of the magnets 18 of the rotor 12. As a result, in the motor 92 of this embodiment, eddy current loss due to leakage flux from the magnets 18 to the reinforcing parts 70 can be suppressed compared to a configuration in which the reinforcing parts 70 formed on each substrate 34 are disposed on the axial extension of the magnets 18 of the rotor 12. This makes it possible to increase the efficiency of the motor 92.

[0056] Sixth embodiment The coil body 32 of the motor of the sixth embodiment will be described with reference to Figures 17 and 18. Note that, in the motor of the sixth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0057] 17 and 18 are schematic diagrams showing a substrate 34 constituting a part of the coil body 32 of the motor of the sixth embodiment, a magnetic field generating section 80 formed on the substrate 34, and the like. As shown in these figures, in the coil body 32 of this embodiment, a reinforcing section 70 for ensuring the strength of the coil body 32 is formed on one surface 34A in the first end region J2 of the substrate 34. That is, the reinforcing section 70 is formed only on one surface in the first end region J2 of the substrate 34. Even in the configuration of this embodiment, the strength and rigidity of the coil body 32 can be ensured, compared to a configuration in which the reinforcing section 70 is not provided.

[0058] Seventh embodiment The coil body 32 of the motor of the seventh embodiment will be described with reference to Fig. 19. Note that, in the motor of the seventh embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0059] FIG. 19 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the seventh embodiment, a magnetic field generating unit 80 formed on the substrate 34, and the like. As shown in this figure, in the coil body 32 of this embodiment, the reinforcing portion 70 is formed on one side surface 34A in the first end region J2 of the substrate 34 and one side surface 34A in the second end region J3. The reinforcing portion 70 formed in the first end region J2 is interrupted at four points in the circumferential direction. The reinforcing portion 70 formed in the second end region J3 is interrupted at four points in the circumferential direction. Here, the reinforcing portion 70 formed in the first end region J2 can also be regarded as being divided into four reinforcing pieces 70A. The reinforcing portion 70 formed in the second end region J3 can also be regarded as being divided into four reinforcing pieces 70A. The four reinforcing pieces 70A formed in the first end region J2 are arranged at equal intervals in the circumferential direction. The four reinforcing pieces 70A formed in the second end region J3 are disposed at equal intervals in the circumferential direction. Furthermore, the circumferential positions of the four reinforcing pieces 70A formed in the first end region J2 are offset by 45° in the circumferential direction from the circumferential positions of the four reinforcing pieces 70A formed in the second end region J3.

[0060] The above-described configuration of the present embodiment also ensures the strength and rigidity of the coil body 32, compared to a configuration in which the reinforcing portion 70 is not provided. In addition, in the present embodiment, the reinforcing portion 70 formed in the first end region J2 is divided into four reinforcing pieces 70A, and the reinforcing portion 70 formed in the second end region J3 is divided into four reinforcing pieces 70A. This makes it possible to reduce leakage flux from the magnet 18 to the reinforcing portion 70 side, compared to a configuration in which the reinforcing portion 70 formed in the first end region J2 and the reinforcing portion 70 formed in the second end region J3 are not divided in the circumferential direction. This makes it possible to suppress eddy current loss associated with leakage flux from the magnet 18 to the reinforcing portion 70 side. As a result, the motor can be made more efficient.

[0061] Eighth embodiment The coil body 32 of the motor of the eighth embodiment will be described with reference to Fig. 20. Note that, in the motor of the eighth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0062] FIG. 20 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the eighth embodiment, a magnetic field generating unit 80 formed on the substrate 34, and the like. As shown in this figure, in the coil body 32 of this embodiment, the reinforcing portion 70 is formed on one surface 34A in the first end region J2 of the substrate 34 and on one surface 34A in the second end region J3. A part of the reinforcing portion 70 formed in the first end region J2 is interrupted at one point in the circumferential direction. In addition, the reinforcing portion 70 formed in the second end region J3 is formed without interruption over the entire range in the circumferential direction. As a result, the shape of the reinforcing portion 70 formed in the first end region J2 is C-shaped when viewed from the axial direction, and the shape of the reinforcing portion 70 formed in the second end region J3 is annular when viewed from the axial direction. Here, in the portion J4 where the reinforcing portion 70 is interrupted in the circumferential direction on the first end region J2, various wirings 94 connected to the magnetic field generating unit 80 are arranged radially outward. In this manner, in this embodiment, the reinforcing portion 70 can be prevented from interfering with the routing of the various wires 94.

[0063] Ninth embodiment The coil body 32 of the motor of the ninth embodiment will be described with reference to Fig. 21. Note that in the motor of the ninth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0064] FIG. 21 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the ninth embodiment, a magnetic field generating unit 80 formed on the substrate 34, and the like. As shown in this figure, in the coil body 32 of this embodiment, the reinforcing portion 70 is formed on one surface 34A in the first end region J2 of the substrate 34 and on one surface 34A in the second end region J3. A part of the reinforcing portion 70 formed in the first end region J2 is formed continuously over the entire range in the circumferential direction. In addition, the reinforcing portion 70 formed in the second end region J3 is interrupted at one point in the circumferential direction. As a result, the shape of the reinforcing portion 70 formed in the first end region J2 when viewed from the axial direction is annular, and the shape of the reinforcing portion 70 formed in the second end region J3 when viewed from the axial direction is C-shaped. Here, in the portion J5 where the reinforcing portion 70 is interrupted in the circumferential direction on the second end region J3, various wirings 94 connected to the magnetic field generating unit 80 are arranged radially inward. In this manner, in this embodiment, the reinforcing portion 70 can be prevented from interfering with the routing of the various wires 94.

[0065] Tenth embodiment The coil body 32 of the motor of the tenth embodiment will be described with reference to Fig. 22. Note that in the motor of the tenth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0066] FIG. 22 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the tenth embodiment, a magnetic field generating unit 80 formed on the substrate 34, and the like. As shown in this figure, in the coil body 32 of this embodiment, the reinforcing portion 70 is formed on one side surface 34A in the first end region J2 of the substrate 34 and one side surface 34A in the second end region J3. The reinforcing portion 70 formed in the first end region J2 is interrupted at three points in the circumferential direction. The reinforcing portion 70 formed in the second end region J3 is interrupted at three points in the circumferential direction. Here, the reinforcing portion 70 formed in the first end region J2 can also be regarded as being divided into three reinforcing pieces 70A. The reinforcing portion 70 formed in the second end region J3 can also be regarded as being divided into three reinforcing pieces 70A. The three reinforcing pieces 70A formed in the first end region J2 are arranged at equal intervals in the circumferential direction. The three reinforcing pieces 70A formed in the second end region J3 are disposed at equal intervals in the circumferential direction. Furthermore, the circumferential positions of the three reinforcing pieces 70A formed in the first end region J2 are offset by 60° in the circumferential direction from the circumferential positions of the three reinforcing pieces 70A formed in the second end region J3.

[0067] In addition, between the reinforcing pieces 70A adjacent in the circumferential direction on the first end region J2, various wirings 94 connected to the magnetic field generating unit 80 are routed radially outward. In this embodiment, the various wirings 94 are routed radially outward at three locations on the first end region J2. In addition, between the reinforcing pieces 70A adjacent in the circumferential direction on the second end region J3, various wirings 94 connected to the magnetic field generating unit 80 are routed radially inward. In this embodiment, the various wirings 94 are routed radially inward at three locations on the second end region J3. In this way, in this embodiment, it is possible to prevent the reinforcing unit 70 from interfering with the routing of the various wirings 94.

[0068] Eleventh embodiment The coil body 32 of the motor of the eleventh embodiment will be described with reference to Fig. 23. Note that in the motor of the eleventh embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0069] FIG. 23 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the eleventh embodiment, a magnetic field generating unit 80 formed on the substrate 34, and the like. As shown in this figure, in the coil body 32 of this embodiment, the reinforcing portion 70 is formed on one surface 34A in the first end region J2 of the substrate 34 and on one surface 34A in the second end region J3. The reinforcing portion 70 formed in the first end region J2 is formed without interruption over the entire range in the circumferential direction. Moreover, the reinforcing portion 70 formed in the second end region J3 is formed without interruption over the entire range in the circumferential direction. Here, the reinforcing portion 70 on the first end region J2 is divided into three in the radial direction via two slits 96. Moreover, the reinforcing portion 70 on the second end region J3 is divided into three in the radial direction via two slits 96.

[0070] The above-described configuration of the present embodiment also ensures the strength and rigidity of the coil body 32, compared to a configuration in which the reinforcing portion 70 is not provided. In addition, in the present embodiment, the reinforcing portion 70 formed in the first end region J2 is configured to be divided in the radial direction via the slits 96, and the reinforcing portion 70 formed in the second end region J3 is configured to be divided in the radial direction via the slits 96. This makes it possible to reduce leakage flux from the magnet 18 to the reinforcing portion 70 side, compared to a configuration in which the reinforcing portion 70 formed in the first end region J2 and the reinforcing portion 70 formed in the second end region J3 are not divided in the radial direction. This makes it possible to suppress eddy current loss associated with leakage flux from the magnet 18 to the reinforcing portion 70 side. As a result, it is possible to improve the efficiency of the motor.

[0071] Twelfth embodiment The coil body 32 of the motor of the twelfth embodiment will be described with reference to Fig. 24. Note that in the motor of the twelfth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0072] FIG. 24 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the twelfth embodiment, a magnetic field generating section 80 formed on the substrate 34, and the like. As shown in this figure, in the coil body 32 of this embodiment, the reinforcing section 70 is formed on one surface 34A in the first end region J2 of the substrate 34 and on one surface 34A in the second end region J3. The reinforcing section 70 formed in the first end region J2 is formed continuously over the entire range in the circumferential direction. The reinforcing section 70 formed in the second end region J3 is formed continuously over the entire range in the circumferential direction. Here, the reinforcing section 70 on the first end region J2 and the reinforcing section 70 on the second end region J3 are each formed using a steel material.

[0073] In the coil body 32 of the motor of the present embodiment described above, the strength and rigidity of the coil body 32 can be improved compared to a configuration in which the reinforcing portion 70 on the first end region J2 and the reinforcing portion 70 on the second end region J3 are formed using copper material.

[0074] Thirteenth embodiment The coil body 32 of the motor of the thirteenth embodiment will be described with reference to Fig. 25. Note that in the motor of the thirteenth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0075] 25 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the thirteenth embodiment, and a magnetic field generating section 80 formed on the substrate 34. As shown in this figure, the coil body 32 of the motor of this embodiment is configured similarly to the coil body 32 of the motor of the twelfth embodiment described above, except that the reinforcing section 70 formed in the first end region J2 and the reinforcing section 70 formed in the second end region J3 are made of a resin material.

[0076] In the coil body 32 of the motor of the present embodiment described above, the weight of the coil body 32 can be reduced compared to a configuration in which the reinforcing portion 70 on the first end region J2 and the reinforcing portion 70 on the second end region J3 are formed using copper or steel.

[0077] Fourteenth embodiment The coil body 32 of the motor of the fourteenth embodiment will be described with reference to Figures 26 and 27. Note that in the motor of the fourteenth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0078] 26 is a schematic diagram showing a part of one substrate 34 constituting a part of the coil body 32 of the motor of the fourteenth embodiment, and a magnetic field generating section 80 formed on the substrate 34. As shown in this figure, the coil body 32 of the motor of this embodiment is configured similarly to the coil body 32 of the motor of the sixth embodiment described above, except for the points that will be described later.

[0079] An engagement portion 98 is formed at the radial center of the first end region J2 and the reinforcement portion 70, penetrating them in the axial direction. In this embodiment, the engagement portion 98 is a circular opening penetrating the first end region J2 and the reinforcement portion 70 in the axial direction. In this embodiment, four engagement portions 98 are formed in one substrate 34 and the reinforcement portion 70 formed on the substrate 34. The four engagement portions 98 are also arranged at equal intervals in the circumferential direction.

[0080] FIG. 27 shows four jigs 100. These four jigs 100 are formed in a round bar shape and fixed to a base (not shown) in a state of being arranged at equal intervals in the circumferential direction. Then, the four jigs 100 are inserted into the four engagement parts 98 formed in the first end region J2 and the reinforcing part 70 of the substrate 34, respectively, to stack the substrates 34. In this manner, in this embodiment, the coil body 32 can be assembled using the four jigs 100. As a result, in this embodiment, the positional accuracy of the other substrate 34 relative to the one substrate 34 can be easily ensured compared to a manufacturing direction in which the four jigs 100 are not used. Also, in this embodiment, the edge part of the engagement part 98 is the opening edge part of the substrate 34 and the opening edge part of the reinforcing part 70. In this configuration, the opening edge part of the substrate 34 is reinforced by the reinforcing part. As a result, it is possible to suppress deformation of the opening edge part of the substrate 34 due to contact of the opening edge part of the substrate 34 with the jig 100.

[0081] In the above-described example, the engaging portion 98 is a circular opening, but the present invention is not limited thereto. For example, as shown in FIG. 28, the engaging portion 98 may be configured by cutting the outer periphery of each of the first end region J2 and the reinforcing portion 70 into a rectangular shape. Also, as shown in FIG. 29, the engaging portion 98 may be configured by cutting the outer periphery of each of the first end region J2 and the reinforcing portion 70 into a triangular shape. Furthermore, as shown in FIG. 30, the engaging portion 98 may be configured by cutting the outer periphery of each of the first end region J2 and the reinforcing portion 70 into a semicircular shape. The configuration of the engaging portion 98 may be appropriately set in consideration of the configuration of the jig 100, etc. Also, the engaging portion 98 may be configured to engage with a part of a member constituting the motor, such as a part of the stator core 26.

[0082] In the seventh to fourteenth embodiments described above, the reinforcing portion 70 is formed only on one side of the substrate 34, but the present invention is not limited to this. The configurations of the seventh to fourteenth embodiments described above can also be applied to a configuration in which the reinforcing portion 70 is formed on both sides of the substrate 34.

[0083] Fifteenth embodiment The coil body 32 of the motor of the fifteenth embodiment will be described with reference to Figures 31 and 32. Note that in the motor of the fifteenth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those corresponding to those of the motor 10, etc., and descriptions thereof may be omitted.

[0084] 31 and 32 are schematic diagrams showing coil body 32 of a motor according to a fifteenth embodiment. As shown in these figures, coil body 32 of the motor according to this embodiment is configured similarly to coil body 32 of the motor according to the second embodiment described above, except for the points described below.

[0085] The reinforcing portion 70 formed on the surface 34A on one side in the first end region J2 of the substrate 34 has eight mating protrusions 102 protruding toward one axial side. These eight mating protrusions 102 are arranged at equal intervals along the circumferential direction. The reinforcing portion 70 formed on the surface 34B on the other side in the first end region J2 of the substrate 34 has eight mating recesses 104 with the other axial side open. These eight mating recesses 104 are arranged at equal intervals along the circumferential direction and are arranged at the same positions in the circumferential direction and radial direction as the eight mating protrusions 102. The mating protrusions 102 and mating recesses 104 can be formed, for example, by performing press punching after forming the reinforcing portion 70 on both axial sides in the first end region J2 of the substrate 34.

[0086] The substrates 34 of each layer are stacked in the axial direction with the mating convex portion 102 formed in the reinforcing portion 70 of one substrate 34 mated with the mating concave portion 104 formed in the reinforcing portion 70 of the other substrate 34. In this manner, the positional accuracy of the other substrate 34 relative to the first substrate 34 can be easily ensured.

[0087] In the present embodiment, an example in which the fitting protrusion 102 and the fitting recess 104 are formed on the reinforcement portion 70 of the first end region J2 of the substrate 34 has been described, but the present invention is not limited thereto. For example, the fitting protrusion 102 and the fitting recess 104 may be formed on the reinforcement portion 70 of the second end region J3 of the substrate 34. However, the configuration in which the fitting protrusion 102 and the fitting recess 104 are formed on the reinforcement portion 70 of the first end region J2 of the substrate 34 has a smaller circumferential angle change of the fitting protrusion 102 and the fitting recess 104 relative to the circumferential misalignment amount (distance) of the fitting protrusion 102 and the fitting recess 104 than the configuration in which the fitting protrusion 102 and the fitting recess 104 are formed on the reinforcement portion 70 of the second end region J3 of the substrate 34. Therefore, from the viewpoint of easily ensuring the circumferential positional accuracy of one substrate 34 relative to another substrate 34, a configuration in which the mating protrusion 102 and the mating recess 104 are formed in the reinforcing portion 70 of the first end region J2 of the substrate 34 is more advantageous than a configuration in which the mating protrusion 102 and the mating recess 104 are formed in the reinforcing portion 70 of the second end region J3 of the substrate 34.

[0088] Sixteenth embodiment The coil body 32 of the motor of the sixteenth embodiment will be described with reference to Fig. 33. Note that in the motor of the sixteenth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are given the same reference numerals as those corresponding to those of the motor 10, etc., and descriptions thereof may be omitted.

[0089] FIG. 33 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the sixteenth embodiment, a magnetic field generating section 80 formed on the substrate 34, and the like. As shown in this figure, in this embodiment, an end 70B of the reinforcing section 70 on the magnetic field generating section 80 side formed on one surface 34A of the substrate 34 and an end 80A of the magnetic field generating section 80 on the reinforcing section 70 side formed on one surface 34A of the substrate 34 overlap in the axial direction. Also, an end 70B of the reinforcing section 70 on the magnetic field generating section 80 side formed on the other surface 34B of the substrate 34 and an end 80A of the magnetic field generating section 80 on the reinforcing section 70 side formed on the other surface 34B of the substrate 34 overlap in the axial direction. In the configuration of this embodiment, the strength and rigidity of the coil body 32 can be ensured as compared to a configuration in which the reinforcing section 70 is not provided.

[0090] Seventeenth embodiment Coil body 32 of the motor of the seventeenth embodiment will be described with reference to Figures 34 to 36. Note that in the motor of the seventeenth embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are given the same reference numerals as those corresponding to those of the motor 10, etc., and descriptions thereof may be omitted.

[0091] 34 shows a schematic diagram of one substrate 34 constituting a part of the coil body 32 of the motor of the seventeenth embodiment, and a magnetic field generating section 80 formed on the substrate 34. As shown in this figure, the coil body 32 of the motor of this embodiment is configured similarly to the coil body 32 of the motor of the second embodiment described above, except for the points that will be described later.

[0092] 35 and 36, in this embodiment, with the substrate 34 set in the die 106, the outer peripheral end 34C of the first end region J2 of the substrate 34 and the outer peripheral end 70C of the reinforcing portion 70 are cut and removed by the punch 108. As a result, as shown in Figs. 34 and 36, the outer peripheral end 34D of the first end region J2 of the substrate 34 and the outer peripheral end 70D of the reinforcing portion 70 are flush with each other. In Fig. 34, the parts cut and removed by the punch 108 (the outer peripheral end 34C of the first end region J2 of the substrate 34 and the outer peripheral end 70C of the reinforcing portion 70) are depicted by dashed lines.

[0093] In the embodiment described above, the outer peripheral edge 34D of the first end region J2 of the substrate 34 and the outer peripheral edge 70D of the reinforcing portion 70 are flush with each other, thereby preventing deformation of the outer peripheral edge 34D of the first end region J2 of the substrate 34.

[0094] In each of the above-described embodiments, the outer edge of the substrate 34 has a circular shape, but the present invention is not limited to this. For example, as shown in Fig. 37, the outer edge of the substrate 34 may have a rectangular shape. As shown in Fig. 38, the outer edge of the substrate 34 may have a hexagonal shape. Furthermore, as shown in Fig. 39, the outer edge of the substrate 34 may have a dodecagonal shape.

[0095] (18th embodiment) The coil body 32 of the motor of the 18th embodiment will be described with reference to Fig. 40. Note that, in the motor of the 18th embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those of the motor 10 and the like, and descriptions thereof may be omitted.

[0096] 40, in the coil body 32 of the motor of this embodiment, the reinforcing portion 70 is electrically connected to the magnetic field generating portion 80. In this configuration, the reinforcing portion 70 can function as a current path to the magnetic field generating portion 80.

[0097] Nineteenth embodiment The coil body 32 of the motor of the 19th embodiment will be described with reference to Fig. 41. Note that, in the motor of the 19th embodiment, members and parts corresponding to those of the motor 10 and the motors of the other embodiments are denoted by the same reference numerals as those corresponding to those of the motor 10, etc., and descriptions thereof may be omitted.

[0098] As shown in Fig. 41, in this embodiment, the thickness dimension t1 of the reinforcing portion 70 is set to be smaller than the thickness dimension t2 of the magnetic field generating portion 80. Moreover, an insulating layer 110 made of an insulating material is formed on the surface of the reinforcing portion 70 opposite the substrate 34. The sum of the thickness dimension t1 of the reinforcing portion 70 and the thickness dimension t3 of the insulating layer is smaller than the thickness dimension t2 of the magnetic field generating portion 80. Even in the configuration of this embodiment described above, the strength and rigidity of the coil body 32 can be ensured, compared to a configuration in which the reinforcing portion 70 is not provided.

[0099] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above, and can of course be modified in various ways without departing from the spirit of the present disclosure. In addition, all or part of the configurations of the embodiments described above can be combined with each other. For example, the configurations of the embodiments can be appropriately selected according to the application of the motor 10, etc. In addition, the configuration of the motor 10, etc. may be applied to a generator. In addition, the configuration of the present disclosure can be applied to a rotor configured to include a coil body 32.

[0100] <Additional Notes> (Appendix 1) A base member (34) formed of an insulating material in a shape extending in a radial direction and laminated in an axial direction; a magnetic field generating unit (80) formed on the base member using a conductive material and configured to generate a rotating magnetic field when electricity is applied; a reinforcing portion (70) formed in a region of the base member, on a surface oriented in the axial direction, different from a region in which the magnetic field generating portion is formed, and reinforcing the base member; A coil body (32) equipped with the (Appendix 2) 2. The coil body according to claim 1, wherein the reinforcing portion is formed using a conductive material. (Appendix 3) 3. The coil body of claim 2, wherein the reinforcing portion and the magnetic field generating portion are electrically connected to each other, thereby forming a current path to the magnetic field generating portion. (Appendix 4) 4. A coil body according to any one of claims 1 to 3, wherein an axial thickness dimension (t1) of the reinforcing portion is set to a dimension equal to or smaller than an axial thickness dimension (t2) of the magnetic field generating portion. (Appendix 5) 5. The coil body according to claim 1, wherein the reinforcing portion is divided in at least one of the circumferential direction and the radial direction. (Appendix 6) A coil body as described in any one of Appendix 1 to Appendix 5, in which an engagement portion (98) is formed in the area where the reinforcing portion is formed in the base member of each layer, and the reinforcing portion forms an edge portion. (Appendix 7) The reinforcing portion formed on the base member of each layer is formed with a fitting convex portion (102) protruding toward one axial side and a fitting concave portion (104) that is open toward the other axial side, 7. A coil body according to any one of claims 1 to 6, wherein the base members of each layer are stacked in the axial direction with the mating convex portion formed in the reinforcing portion of one of the base members mated with the mating concave portion formed in the reinforcing portion of the other of the base members. (Appendix 8) An armature (14) comprising the coil body according to any one of Supplementary Note 1 to Supplementary Note 7. (Appendix 9) One of a stator (14) and a rotor (12) including the armature described in Appendix 8; the other of the stator and the rotor having a magnet (18) arranged axially opposite the coil body; A rotating electric machine (10, 90, 92) equipped with the above structure. [Explanation of symbols]

[0101] 10 motor (rotating electric machine), 12 rotor (rotor), 14 stator (armature, stator), 18 magnet, 32 coil body, 34 base member, 70 reinforcement portion, 80 magnetic field generating portion, 90 motor (rotating electric machine), 92 motor (rotating electric machine), 98 engagement portion, 102 mating protrusion, 104 mating recess, t1 axial thickness dimension of reinforcement portion, t2 axial thickness dimension of magnetic field generating portion

Claims

1. A base member (34) formed of an insulating material in a shape extending in a radial direction and laminated in an axial direction; a magnetic field generating unit (80) formed on the base member using a conductive material and configured to generate a rotating magnetic field when electricity is applied; a reinforcing portion (70) formed in a region of the base member that is different from a region in which the magnetic field generating portion is formed on a surface of the base member that is oriented in the axial direction, and reinforcing the base member; A coil body (32) comprising:

2. The coil body according to claim 1 , wherein the reinforcing portion is formed using a conductive material.

3. The coil body according to claim 2 , wherein the reinforcing portion and the magnetic field generating portion are electrically connected to each other, so that the reinforcing portion serves as a current path to the magnetic field generating portion.

4. 2. The coil body according to claim 1, wherein an axial thickness dimension (t1) of the reinforcing portion is set to be equal to or smaller than an axial thickness dimension (t2) of the magnetic field generating portion.

5. The coil body according to claim 1 , wherein the reinforcing portion is divided in at least one of a circumferential direction and a radial direction.

6. 2. The coil body according to claim 1, wherein an engaging portion (98) having an edge portion of the reinforcing portion is formed in the base member of each layer in the region where the reinforcing portion is formed.

7. The reinforcing portion formed on the base member of each layer is formed with a fitting convex portion (102) protruding toward one axial side and a fitting concave portion (104) that is open toward the other axial side, 2. A coil body as described in claim 1, wherein the base members of each layer are stacked in the axial direction with the mating convex portion formed in the reinforcing portion of one of the base members mated with the mating concave portion formed in the reinforcing portion of the other of the base members.

8. An armature (14) comprising the coil body according to any one of claims 1 to 7.

9. One of a stator (14) and a rotor (12) including the armature according to claim 8; the other of the stator and the rotor having a magnet (18) arranged axially opposite the coil body; A rotating electric machine (10, 90, 92) comprising the above structure.

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