Coil body, armature and rotary electric machine

Abstract

To raise efficiency and torque in a configuration in which base members are laminated in an axial direction.SOLUTION: A coil body 32 comprises: a plurality of substrates 34 laminated in an axial direction; and a plurality of conductor layers 33 each formed on the plurality of substrates 34 by using a conductive material. In addition, the coil body 32 comprises a first serial connection part 50S1 which connects a first conductor layer 33 formed on a first substrate 34 in series with a first conductor layer 33 formed on a second substrate 34. Moreover, the coil body 32 comprises a second serial connection part 50S2 which connects a second conductor layer 33 formed on the first substrate 34 in series with a second conductor layer 33 formed on the second substrate 34. Furthermore, the coil body 32 comprises a parallel connection part 52 which connects each conductor layer 33 connected by the first serial connection part 50S1 in parallel with each conductor layer 33 connected by the second serial connection part 50S2.SELECTED DRAWING: Figure 10

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 recent years, there has been a demand for higher efficiency and higher torque in rotating electrical machines, but the configuration described in Patent Document 1 above leaves room for improvement in this regard.

[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 achieve high efficiency and high torque 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 plurality of base members (34) formed into a radially extending shape using an insulating material and stacked in the axial direction, a plurality of conductor layers (33) formed on each of the plurality of base members using a conductive material, a first series connection portion (50) that connects in series the first conductor layer formed on the first base member and the first conductor layer formed on the second base member, a second series connection portion that connects in series the second conductor layer formed on the first base member and the second conductor layer formed on the second base member, and a parallel connection portion (52) that connects in parallel the conductor layers connected by the first series connection portion and the conductor layers connected by the second series connection portion. The coil body (32) is formed into a radially extending shape using an insulating material and includes a plurality of base members (34) stacked in the axial direction, a plurality of conductor layers (33) formed on each of the plurality of base members using a conductive material, a first series connection portion (50) connecting in series the plurality of conductor layers formed on the first base member and connected in parallel to each other, and the plurality of conductor layers formed on the second base member and connected in parallel to each other, a second series connection portion connecting in series the plurality of conductor layers formed on the third base member and connected in parallel to each other, and the plurality of conductor layers formed on the fourth base member and connected in parallel to each other, and a parallel connection portion (52) connecting in parallel the conductor layers connected at the first series connection portion and the conductor layers connected at the second series connection portion. The armature (14) also includes the coil body. In addition, the rotating electric machine (10, 54, 56, 58, 60) 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, it is possible to achieve high efficiency and high torque 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] 1 is a cross-sectional view showing a schematic diagram of a motor according to a first embodiment. [Figure 10] 1 is a cross-sectional view illustrating a coil body of a motor according to a first embodiment. [Figure 11] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 12] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 13] FIG. 11 is a cross-sectional view illustrating a motor according to a second embodiment. [Figure 14] FIG. 11 is a cross-sectional view illustrating a coil body of a motor according to a second embodiment. [Figure 15] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 16A] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 16B] FIG. 2 is a cross-sectional view illustrating a coil body of a motor. [Figure 17] FIG. 11 is a cross-sectional view illustrating a motor according to a third embodiment. [Figure 18] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 19] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 20] FIG. 1 is a cross-sectional view that shows a schematic diagram of a motor having six laminated layers of substrates. [Figure 21] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 22] FIG. 2 is a block diagram showing the state of connections of each conductor layer. [Figure 23] FIG. 11 is a cross-sectional view illustrating a motor according to a fourth embodiment. [Figure 24] FIG. 13 is a cross-sectional view that illustrates a motor in which the connection state of each conductor layer is changed from that of the motor of the fourth embodiment. [Diagram 25] FIG. 13 is a perspective view that illustrates a coil body of a motor according to a fifth embodiment, showing a state before the first substrate and the second substrate are laminated. [Figure 26] FIG. 13 is a plan view that illustrates a coil body of a motor according to a fifth embodiment, showing a state before the first substrate and the second substrate are laminated. [Figure 27] FIG. 13 is a plan view illustrating a coil body of a motor according to a fifth embodiment, in which a first substrate and a second substrate are laminated. [Figure 28] FIG. 13 is a perspective view that illustrates a coil body of a motor according to a sixth embodiment, showing a state before the first substrate and the second substrate are laminated. [Figure 29] FIG. 13 is a perspective view showing a coil body of a motor according to a sixth embodiment, in which a first substrate and a second substrate are laminated. [Diagram 30] FIG. 13 is a plan view that illustrates a coil body of a motor according to a seventh embodiment, showing a state before the first substrate, the second substrate, and the third substrate are laminated. [Diagram 31] FIG. 13 is a plan view that illustrates a coil body of a motor according to a seventh embodiment, showing a state in which a first substrate and a second substrate are laminated. [Diagram 32] FIG. 13 is a plan view that illustrates a coil body of a motor according to a seventh embodiment, showing a state in which a first substrate, a second substrate, and a third substrate are laminated. [Diagram 33] FIG. 13 is a perspective view that illustrates a coil body of a motor according to an eighth embodiment, showing a state before the first substrate, the second substrate, and the third substrate are laminated. [Diagram 34] FIG. 13 is a perspective view that illustrates a coil body of a motor according to an eighth embodiment, showing a state in which a first substrate, a second substrate, and a third substrate are laminated. [Diagram 35] FIG. 13 is a plan view that illustrates a coil body of a motor according to an eighth embodiment, showing a state before the first substrate, the second substrate, and the third substrate are laminated. [Diagram 36] FIG. 13 is a plan view that typically shows a coil body of a motor according to an eighth embodiment, illustrating a state midway through a process of laminating a first substrate, a second substrate, and a third substrate. [Figure 37] FIG. 13 is a plan view that illustrates a coil body of a motor according to an eighth embodiment, showing a state in which a first substrate, a second substrate, and a third substrate are laminated. [Figure 38] FIG. 13 is a plan view showing a coil body of a motor according to a ninth embodiment, illustrating a state before the first substrate and the second substrate are laminated. [Figure 39] FIG. 23 is a plan view showing a coil body of a motor according to a tenth embodiment, illustrating a state before the first substrate and the second substrate are laminated. [Diagram 40] FIG. 23 is a plan view showing a coil body of a motor according to an eleventh embodiment, illustrating a state before the first substrate and the second substrate are laminated. [Diagram 41] 16A to 16C 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 according to an eleventh embodiment. [Diagram 42] FIG. 23 is a perspective view illustrating a coil body of a motor according to a twelfth embodiment, showing a state before the first substrate and the second substrate are laminated. [Diagram 43]FIG. 23 is a plan view illustrating a coil body of a motor according to a twelfth embodiment, in which a first substrate and a second substrate are laminated. [Diagram 44] FIG. 23 is a perspective view illustrating a coil body of a motor according to a thirteenth embodiment, showing a state before the first substrate and the second substrate are laminated. [Diagram 45] FIG. 23 is a plan view illustrating a coil body of a motor according to a thirteenth embodiment, in which a first substrate and a second substrate are laminated. [Diagram 46] FIG. 23 is a plan view showing a schematic diagram of a first substrate and the like constituting a part of a coil body of a motor according to a fourteenth embodiment. [Figure 47] FIG. 23 is a perspective view showing a coil body of a motor according to a fourteenth embodiment, in which a first substrate and a second substrate are laminated. [Figure 48] FIG. 23 is a plan view showing a schematic diagram of a first substrate and the like constituting a part of a coil body of a motor according to a fifteenth embodiment. [Figure 49] FIG. 23 is a perspective view showing a coil body of a motor according to a fifteenth embodiment, in which a first substrate and a second substrate are laminated. [Figure 50] FIG. 23 is a perspective view showing a coil body of a motor according to a sixteenth embodiment, in which a plurality of substrates are stacked. 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 portions 16 are formed on multiple substrates 34, respectively. The multiple substrates 34 are stacked in the axial direction, so that the multiple coil portions 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 one surface 34A (the surface on the stator core 26 side) of the substrate 34. The fourth extension A4, the fifth extension A5, and the sixth extension A6 are formed on the other surface 34B (the surface opposite to the stator core 26) of the substrate 34. The third extension A3 and the fourth extension A4 are electrically connected via vias, through holes, etc. (not shown) as an example. In FIG. 6, the part of the coil part 16U1 formed on the one surface 34A of the substrate 34 is indicated by a solid line. In addition, the part of the coil part 16U1 formed on the other 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 to suppress loss due to circulating current) Incidentally, the coil body 32 constituting a part of the motor 10 described above has a configuration in which the substrates 34 having the above-mentioned configuration are stacked in the axial direction. In this configuration, the distances between the magnet 18 and the multiple coil sections 16 (conductor layers 33) formed on the substrates 34 of each layer are different from each other. Therefore, it is considered that an induced voltage difference occurs between the coil sections 16 (conductor layers 33) formed on the substrate 34 of one layer and the coil sections 16 (conductor layers 33) formed on the substrate 34 of the other layer, and a circulating current occurs between them. Hereinafter, the configuration of each embodiment having a series connection section 50 and a parallel connection section 52 for suppressing loss due to this circulating current will be described.

[0038] (First embodiment) A motor 54 according to the first embodiment will be described with reference to Figures 9 to 11. Note that in the motor 54 according to the first embodiment, members and parts corresponding to those in the motor 10 described above are given the same reference numerals as those in the motor 10 described above, and descriptions thereof may be omitted.

[0039] As shown in Fig. 9, the coil body 32 of the motor 54 of this embodiment is configured by stacking two substrates 34. Of the two substrates 34, the substrate 34 arranged on the stator core 26 side will be referred to as a first substrate 34S1, and the substrate 34 arranged on the magnet 18 side will be referred to as a second substrate 34S2. Note that the line indicated by the symbol T in Fig. 9 indicates the magnetic flux of the magnet 18.

[0040] Two conductor layers 33 are provided on the first substrate 34S1. In FIG. 9, the conductor layer 33 on one side is formed on one surface of the first substrate 34S1, and the conductor layer 33 on the other side is formed on the other surface of the first substrate 34S1. However, these conductor layers 33 are formed along both sides of the substrate 34, similar to the motor 10 described above. In addition, in FIG. 9, only the conductor layer 33 of one of the U-phase, V-phase, and W-phase is illustrated. Here, one of the conductor layers 33 formed along the first substrate 34S1 is referred to as the first conductor layer 33S1, and the other conductor layer 33 is referred to as the second conductor layer 33S2.

[0041] Similar to the first substrate 34S1, two conductor layers 33 are provided on the second substrate 34S2. Here, one of the conductor layers 33 formed along the second substrate 34S2 is referred to as a third conductor layer 33S3, and the other conductor layer 33 is referred to as a fourth conductor layer 33S4.

[0042] As shown in Figures 10 and 11, the first conductor layer 33S1 formed on the first substrate 34S1 and the fourth conductor layer 33S4 formed on the second substrate 34S2 are connected in series via the first series connection part 50S1. The second conductor layer 33S2 formed on the first substrate 34S1 and the third conductor layer 33S3 formed on the second substrate 34S2 are connected in series via the second series connection part 50S2. Furthermore, the conductor layers 33S1 and 33S4 connected by the first series connection part 50S1 and the conductor layers 33S2 and 33S3 connected by the second series connection part 50S2 are connected in parallel via the parallel connection part 52.

[0043] The first base member described in Appendix 1 at the end of this specification corresponds to the first substrate 34S1. The first conductor layer formed on the first base member described in Appendix 1 corresponds to the first conductor layer 33S1. The second base member described in Appendix 1 corresponds to the second substrate 34S2. The first conductor layer formed on the second base member described in Appendix 1 corresponds to the fourth conductor layer 33S4. The first series connection portion described in Appendix 1 corresponds to the first series connection portion 50S1. The second conductor layer formed on the first base member described in Appendix 1 corresponds to the second substrate 34S2. The second conductor layer formed on the second base member described in Appendix 1 corresponds to the third substrate 34S3. The second series connection portion described in Appendix 1 corresponds to the second series connection portion 50S2. The parallel connection portion described in Supplementary Note 1 corresponds to the parallel connection portion 52.

[0044] Here, if the induced voltage generated in the first conductor layer 33S1 is V1, the induced voltage generated in the second conductor layer 33S2 is V2, the induced voltage generated in the third conductor layer 33S3 is V3, and the induced voltage generated in the fourth conductor layer 33S4 is V4, in the motor 54 of this embodiment, the relationship between the induced voltages V1 to V4 is expressed by the following equation 1. V4=V3≒V2=V1...Formula 1

[0045] That is, by connecting in series the fourth conductor layer 33S4 arranged closest to the magnet 18 and the first conductor layer 33S1 arranged closest to the magnet via the first series connection part 50S1, and connecting in series the third conductor layer 33S3 arranged on the magnet 18 side and the second conductor layer 33S2 arranged on the opposite side of the magnet 18 via the second series connection part 50S2, the induced voltage generated between the fourth conductor layer 33S4 and the first conductor layer 33S1 can be made closer to the induced voltage generated between the third conductor layer 33S3 and the second conductor layer 33S2. Then, by connecting in parallel via the parallel connection section 52 the conductor layers 33S1 and 33S4 connected by the first series connection section 50S1 and the conductor layers 33S2 and 33S3 connected by the second series connection section 50S2, it is possible to suppress loss due to a circulating current circulating between the fourth conductor layer 33S4 and the first conductor layer 33S1 and between the third conductor layer 33S3 and the second conductor layer 33S2, and as a result, it is possible to achieve high efficiency and high torque of the motor 54. Note that in a configuration in which the conductor layers 33S1, 33S2, 33S3, and 33S4 are simply connected in parallel, the relationship between the induced voltages V1 to V4 generated in the conductor layers 33S1, 33S2, 33S3, and 33S4 is expressed by the following formula 1.1, and therefore it is not possible to obtain the effect of suppressing loss due to a circulating current as in the motor 54 of this embodiment. V4>V3>V2>V1 Equation 1.1

[0046] As shown in FIG. 12, even in a configuration in which the first conductor layer 33S1 and the third conductor layer 33S3 are connected in series via the first series connection portion 50S1, the second conductor layer 33S2 and the fourth conductor layer 33S4 are connected in series via the second series connection portion 50S2, and the conductor layers 33S1, 33S3 connected by the first series connection portion 50S1 and the conductor layers 33S2, 33S4 connected by the second series connection portion 50S2 are connected in parallel via the parallel connection portion 52, it is possible to suppress losses due to circulating currents circulating between the conductor layers 33, as in the motor 54 of the first embodiment described above.

[0047] Second embodiment A motor 56 of the second embodiment will be described with reference to Figures 13 to 15. In the motor 56 of the second embodiment, members and parts corresponding to the motor 10 and the motor 54 of the first embodiment are denoted by the same reference numerals as those corresponding to the motor 10, etc., and descriptions thereof may be omitted.

[0048] As shown in FIG. 13, the coil body 32 of the motor 56 of this embodiment is configured by stacking three substrates 34. Here, the three substrates 34 are called the first substrate 34S1, the second substrate 34S2, and the third substrate 34S3 in order from the stator core 26 side to the magnet 18 side. Moreover, one conductor layer 33 formed along the first substrate 34S1 is called the first conductor layer 33S1, and the other conductor layer 33 is called the second conductor layer 33S2. Moreover, one conductor layer 33 formed along the second substrate 34S2 is called the third conductor layer 33S3, and the other conductor layer 33 is called the fourth conductor layer 33S4. Moreover, one conductor layer 33 formed along the third substrate 34S3 is called the fifth conductor layer 33S5, and the other conductor layer 33 is called the sixth conductor layer 33S6.

[0049] As shown in FIG. 14 and FIG. 15, the first conductor layer 33S1 formed on the first substrate 34S1 and the fourth conductor layer 33S4 formed on the second substrate 34S2 are connected in series via the first series connection portion 50S1. The second conductor layer 33S2 formed on the first substrate 34S1 and the third conductor layer 33S3 formed on the second substrate 34S2 are connected in series via the second series connection portion 50S2. The fourth conductor layer 33S4 formed on the second substrate 34S2 and the fifth conductor layer 33S5 formed on the third substrate 34S3 are connected in series via the third series connection portion 50S3. The third conductor layer 33S3 formed on the second substrate 34S2 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in series via the fourth series connection portion 50S4. Furthermore, each conductor layer 33S1, 33S4, 33S5 connected by the first series connection portion 50S1 and the third series connection portion 50S3, and each conductor layer 33S2, 33S3, 33S6 connected by the second series connection portion 50S2 and the fourth series connection portion 50S4 are connected in parallel via the parallel connection portion 52.

[0050] The first base member described in Supplementary Notes 1 and 3 at the end of this specification corresponds to the first substrate 34S1. The second base member described in Supplementary Notes 1 and 3 corresponds to the second substrate 34S3. The third base member described in Supplementary Notes 3 corresponds to the third substrate 34S2. The first conductor layer formed on the first base member described in Supplementary Notes 1 and 3 corresponds to the first conductor layer 33S1. The first conductor layer formed on the second base member described in Supplementary Notes 1 and 3 corresponds to the fifth conductor layer 33S5. The first series connection portion described in Supplementary Notes 1 and 3 corresponds to the first series connection portion 50S1 and the third series connection portion 50S3. The first conductor layer formed on the third base member described in Supplementary Notes 3 corresponds to the fourth conductor layer 33S4. Moreover, the second conductor layer formed on the first base member described in Supplementary Notes 1 and 3 corresponds to the second conductor layer 33S2. Moreover, the second conductor layer formed on the second base member described in Supplementary Notes 1 and 3 corresponds to the sixth conductor layer 33S6. Moreover, the second series connection portion described in Supplementary Notes 1 and 3 corresponds to the second series connection portion 50S2 and the fourth series connection portion 50S4. Moreover, the second conductor layer formed on the third base member described in Supplementary Note 3 corresponds to the third conductor layer 33S3.

[0051] Here, if the induced voltage generated in the first conductor layer 33S1 is V1, the induced voltage generated in the second conductor layer 33S2 is V2, the induced voltage generated in the third conductor layer 33S3 is V3, the induced voltage generated in the fourth conductor layer 33S4 is V4, the induced voltage generated in the fifth conductor layer 33S5 is V5, and the induced voltage generated in the sixth conductor layer 33S6 is V6, in the motor 56 of this embodiment, the relationship between the induced voltages V1 to V6 is expressed by the following equation 2. V6=V5≒V4=V3≒V2=V1...Formula 2

[0052] In other words, the induced voltage generated between each of the conductor layers 33S1, 33S4, and 33S5 connected by the first series connection portion 50S1 and the third series connection portion 50S3 can be made to approach the induced voltage generated between each of the conductor layers 33S2, 33S3, and 33S6 connected by the second series connection portion 50S2 and the fourth series connection portion 50S4. Furthermore, by connecting in parallel via the parallel connection portion 52 each of the conductor layers 33S1, 33S4, 33S5 connected by the first series connection portion 50S1 and the third series connection portion 50S3 and each of the conductor layers 33S2, 33S3, 33S6 connected by the second series connection portion 50S2 and the fourth series connection portion 50S4, it is possible to suppress losses due to circulating currents circulating between each of the conductor layers 33S1, 33S4, 33S5 and each of the conductor layers 33S2, 33S3, 33S6, and as a result, it is possible to achieve high efficiency and high torque of the motor 56.

[0053] As shown in FIG. 16A, the first conductor layer 33S1 and the third conductor layer 33S3 are connected in series via the first series connection portion 50S1, the second conductor layer 33S2 and the fourth conductor layer 33S4 are connected in series via the second series connection portion 50S2, the third conductor layer 33S3 and the fifth conductor layer 33S5 are connected in series via the third series connection portion 50S3, and the fourth conductor layer 33S4 and the sixth conductor layer 33S6 are connected in series via the fourth series connection portion 50S4. Further, the conductor layers 50S1, 50S3, and 50S5 connected by the first series connection portion 50S1 and the third series connection portion 50S3, and the conductor layers 50S2, 50S4, and 50S6 connected by the second series connection portion 50S2 and the fourth series connection portion 50S4 are connected in parallel via the parallel connection portion 52. With this configuration as well, as with the motor 56 of the second embodiment, loss due to circulating current circulating between the conductor layers 33 can be suppressed.

[0054] The configuration of the coil body 32 of the motor 56 of the second embodiment can be applied to a coil body 32 in which a plurality of substrates 34 are stacked to form three or more layers and an odd number of layers. For example, in a coil body 32 in which a plurality of substrates 34 are stacked to form five layers, the substrate 34 arranged closest to the stator core 26 corresponds to the first substrate 34S1 in the motor 56 of the second embodiment. The substrate 34 arranged closest to the magnet 18 corresponds to the third substrate 34S3 in the motor 56 of the second embodiment. Furthermore, the three substrates 34 arranged between the substrate 34 arranged closest to the stator core 26 and the substrate 34 arranged closest to the magnet 18 correspond to the second substrate 34S2 in the motor 56 of the second embodiment. In this way, the configuration of the coil body 32 of the motor 56 of the second embodiment can be expanded and applied to a coil body 32 in which a plurality of substrates 34 are stacked to form five or more layers and an odd number of layers.

[0055] The configuration of the coil body 32 of the motor 56 of the second embodiment can be applied to the coil body 32 in which a plurality of substrates 34 are stacked to form an even number of layers, which is equal to or greater than four. For example, as shown in FIG. 16B, in the coil body 32 in which a plurality of substrates 34 are stacked to form four layers, the substrate 34 arranged closest to the stator core 26 corresponds to the first substrate 34S1 in the motor 56 of the second embodiment. The substrate 34 arranged closest to the magnet 18 corresponds to the third substrate 34S3 in the motor 56 of the second embodiment. Furthermore, the two substrates 34 arranged between the substrate 34 arranged closest to the stator core 26 and the substrate 34 arranged closest to the magnet 18 correspond to the second substrate 34S2 in the motor 56 of the second embodiment. In more detail, the coil body 32 is configured such that four substrates 34 are stacked. Here, the three substrates 34 are called the first substrate 34S1, the second substrate 34S2, the third substrate 34S3, and the fourth substrate 34S4 in order from the stator core 26 side to the magnet 18 side. Moreover, one conductor layer 33 formed along the first substrate 34S1 is called the first conductor layer 33S1, and the other conductor layer 33 is called the second conductor layer 33S2. Moreover, one conductor layer 33 formed along the second substrate 34S2 is called the third conductor layer 33S3, and the other conductor layer 33 is called the fourth conductor layer 33S4. Moreover, one conductor layer 33 formed along the third substrate 34S3 is called the fifth conductor layer 33S5, and the other conductor layer 33 is called the sixth conductor layer 33S6. Moreover, one conductor layer 33 formed along the fourth substrate 34S4 is called the seventh conductor layer 33S7, and the other conductor layer 33 is called the eighth conductor layer 33S8. The first conductor layer 33S1 formed on the first substrate 34S1 and the fourth conductor layer 33S4 formed on the second substrate 34S2 are connected in series via the first series connection portion 50S1. The second conductor layer 33S2 formed on the first substrate 34S1 and the third conductor layer 33S3 formed on the second substrate 34S2 are connected in series via the second series connection portion 50S2. The fourth conductor layer 33S4 formed on the second substrate 34S2 and the fifth conductor layer 33S5 formed on the third substrate 34S3 are connected in series via the third series connection portion 50S3.The third conductor layer 33S3 formed on the second substrate 34S2 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in series via the fourth series connection portion 50S4. The fifth conductor layer 33S5 formed on the third substrate 34S3 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 are connected in series via the fifth series connection portion 50S5. The sixth conductor layer 33S6 formed on the third substrate 34S3 and the seventh conductor layer 33S7 formed on the fourth substrate 34S4 are connected in series via the sixth series connection portion 50S5. Furthermore, the conductor layers 33S1, 33S4, 33S5, and 33S8 connected by the first series connection portion 50S1, the third series connection portion 50S3, and the fifth series connection portion 50S3, and the conductor layers 33S2, 33S3, 33S6, and 33S7 connected by the second series connection portion 50S2, the fourth series connection portion 50S4, and the sixth series connection portion 50S6 are connected in parallel via the parallel connection portion 52. In this way, the configuration of the coil body 32 of the motor 56 of the second embodiment can be expanded and applied to a coil body 32 in which a plurality of substrates 34 are stacked so as to have four or more layers and an even number of layers. The first base member described in Supplementary Notes 1 and 3 at the end of this specification corresponds to the first substrate 34S1. The second base member described in Supplementary Notes 1 and 3 corresponds to the fourth substrate 34S4. The third base member described in Supplementary Notes 3 corresponds to the second substrate 34S2 and the third substrate 34S3. There are a plurality of third base members described in Supplementary Notes 3. The first conductor layer formed on the first base member described in Supplementary Notes 1 and 3 corresponds to the first conductor layer 33S1. The first conductor layer formed on the second base member described in Supplementary Notes 1 and 3 corresponds to the eighth conductor layer 33S8. The first series connection portion described in Supplementary Notes 1 and 3 corresponds to the first series connection portion 50S1, the third series connection portion 50S3, and the fifth series connection portion 50S5. Moreover, the first conductor layer formed on the third base member described in Supplementary Note 3 corresponds to the fourth conductor layer 33S4 and the fifth conductor layer 33S5. Moreover, the second conductor layer formed on the first base member described in Supplementary Notes 1 and 3 corresponds to the second conductor layer 33S2. Moreover, the second conductor layer formed on the second base member described in Supplementary Notes 1 and 3 corresponds to the seventh conductor layer 33S7. Moreover, the second series connection portion described in Supplementary Notes 1 and 3 corresponds to the second series connection portion 50S2, the fourth series connection portion 50S4, and the sixth series connection portion 50S6. Moreover, the second conductor layer formed on the third base member described in Supplementary Note 3 corresponds to the third conductor layer 33S3 and the sixth conductor layer 33S6.

[0056] Third embodiment A motor 58 of the third embodiment will be described with reference to Figures 17 and 18. Note that in the motor 58 of the third embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are denoted by the same reference numerals as the members and parts corresponding to the motor 10 described above, and description thereof may be omitted.

[0057] As shown in FIG. 17, the coil body 32 of the motor 58 of this embodiment is configured by stacking four substrates 34. Here, the four substrates 34 are called the first substrate 34S1, the second substrate 34S2, the third substrate 34S3, and the fourth substrate 34S4 in order from the stator core 26 side to the magnet 18 side. Moreover, one conductor layer 33 formed along the first substrate 34S1 is called the first conductor layer 33S1, and the other conductor layer 33 is called the second conductor layer 33S2. Moreover, one conductor layer 33 formed along the second substrate 34S2 is called the third conductor layer 33S3, and the other conductor layer 33 is called the fourth conductor layer 33S4. Moreover, one conductor layer 33 formed along the third substrate 34S3 is called the fifth conductor layer 33S5, and the other conductor layer 33 is called the sixth conductor layer 33S6. Moreover, one conductor layer 33 formed along the fourth substrate 34S4 will be referred to as a seventh conductor layer 33S7, and the other conductor layer 33 will be referred to as an eighth conductor layer 33S8.

[0058] As shown in Figures 17 and 18, the first conductor layer 33S1 and the second conductor layer 33S2 formed on the first substrate 34S1 are connected in parallel. The third conductor layer 33S3 and the fourth conductor layer 33S4 formed on the second substrate 34S2 are connected in parallel. The fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in parallel. The seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 are connected in parallel.

[0059] The first conductor layer 33S1 and the second conductor layer 33S2 formed on the first substrate 34S1 and the seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 are connected in series through the first series connection portion 50S1. The third conductor layer 33S3 and the fourth conductor layer 33S4 formed on the second substrate 34S2 and the fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in series through the second series connection portion 50S2. Furthermore, the conductor layers 33S1, 33S2, 33S7, and 33S8 connected by the first series connection portion 50S1 and the conductor layers 33S3, 33S4, 33S5, and 33S6 connected by the second series connection portion 50S2 are connected in parallel through the parallel connection portion 52.

[0060] The first base member described in Appendix 2 at the end of this specification corresponds to the first substrate 34S1. The multiple conductor layers formed on the first base member described in Appendix 2 and connected in parallel correspond to the first conductor layer 33S1 and the second conductor layer 33S2. The second base member described in Appendix 2 corresponds to the fourth substrate 34S4. The multiple conductor layers formed on the second base member described in Appendix 2 and connected in parallel correspond to the seventh conductor layer 33S7 and the eighth conductor layer 33S8. The first series connection portion described in Appendix 2 corresponds to the first series connection portion 50S1. The third base member described in Appendix 2 corresponds to the second substrate 34S2. The multiple conductor layers formed on the third base member described in Appendix 2 and connected in parallel correspond to the third conductor layer 33S3 and the fourth conductor layer 33S4. Moreover, the fourth base member described in Supplementary Note 2 corresponds to the third substrate 34S3. Moreover, the multiple conductor layers formed on the fourth base member described in Supplementary Note 2 and connected in parallel to each other correspond to the fifth conductor layer 33S5 and the sixth conductor layer 33S6. Moreover, the second series connection portion described in Supplementary Note 2 corresponds to the second series connection portion 50S2. Moreover, the parallel connection portion described in Supplementary Note 2 corresponds to the parallel connection portion 52.

[0061] Here, if the induced voltage generated in the first conductor layer 33S1 is V1, the induced voltage generated in the second conductor layer 33S2 is V2, the induced voltage generated in the third conductor layer 33S3 is V3, the induced voltage generated in the fourth conductor layer 33S4 is V4, the induced voltage generated in the fifth conductor layer 33S5 is V5, the induced voltage generated in the sixth conductor layer 33S6 is V6, the induced voltage generated in the seventh conductor layer 33S7 is V7, and the induced voltage generated in the eighth conductor layer 33S8 is V8, in the motor 58 of this embodiment, the relationship between the induced voltages V1 to V8 is expressed by the following equation 3. V8=V7≒V6=V5≒V4=V3≒V2=V1...Formula 3

[0062] That is, the induced voltage generated between the conductor layers 33S1, 33S2, 33S7, and 33S8 connected by the first series connection portion 50S1 can be made to approach the induced voltage generated between the conductor layers 33S3, 33S4, 33S5, and 33S6 connected by the second series connection portion 50S2. By connecting the conductor layers 33S1, 33S2, 33S7, and 33S8 connected by the first series connection portion 50S1 and the conductor layers 33S3, 33S4, 33S5, and 33S6 connected by the second series connection portion 50S2 in parallel via the parallel connection portion 52, it is possible to suppress loss due to circulating current circulating between the conductor layers 33S1, 33S2, 33S7, and 33S8 and the conductor layers 33S3, 33S4, 33S5, and 33S6, and as a result, it is possible to achieve high efficiency and high torque of the motor 58.

[0063] As shown in FIG. 19, the first conductor layer 33S1 and the fourth conductor layer 33S4 are connected in series via the first series connection portion 50S1, the second conductor layer 33S2 and the third conductor layer 33S3 are connected in series via the second series connection portion 50S2, the fourth conductor layer 33S4 and the fifth conductor layer 33S5 are connected in series via the third series connection portion 50S3, the third conductor layer 33S3 and the sixth conductor layer 33S6 are connected in series via the fourth series connection portion 50S4, the fifth conductor layer 33S5 and the eighth conductor layer 33S8 are connected in series via the fifth series connection portion 50S5, and the sixth conductor layer 33S6 and the seventh conductor layer 33S7 are connected in series via the sixth series connection portion 50S6. Further, the conductor layers 33S1, 33S4, 33S5, and 33S8 connected by the first series connection portion 50S1, the third series connection portion 50S3, and the fifth series connection portion 50S5, and the conductor layers 33S2, 33S3, 33S6, and 33S7 connected by the second series connection portion 50S2, the fourth series connection portion 50S4, and the sixth series connection portion 50S6 are connected in parallel via the parallel connection portion 52. With this configuration as well, as with the motor 58 of the third embodiment, loss due to circulating current circulating between the conductor layers 33 can be suppressed.

[0064] The configuration of the coil body 32 of the motor 58 of the third embodiment can be applied to a coil body 32 in which a plurality of substrates 34 are stacked so as to have four or more layers and an even number of layers. For example, in a coil body 32 in which a plurality of substrates 34 are stacked in six layers, the substrate 34 arranged closest to the stator core 26 corresponds to the first substrate 34S1 in the motor 58 of the third embodiment. The substrate 34 arranged closest to the magnet 18 corresponds to the fourth substrate 34S4 in the motor 58 of the third embodiment. Furthermore, the four substrates 34 arranged between the substrate 34 arranged closest to the stator core 26 and the substrate 34 arranged closest to the magnet 18 correspond to the second substrate 34S2 and the third substrate 34S3 in the motor 58 of the third embodiment. In this way, the configuration of the coil body 32 of the motor 58 of the third embodiment can be expanded and applied to a coil body 32 in which a plurality of substrates 34 are stacked so as to have six or more layers and an even number of layers. Specifically, the coil body 32 shown in FIG. 20 has a configuration in which six substrates 34 are stacked. Here, the six substrates 34 are called the first substrate 34S1, the second substrate 34S2, the third substrate 34S3, the fourth substrate 34S4, the fifth substrate 34S5, and the sixth substrate 34S6 in order from the stator core 26 side to the magnet 18 side. Moreover, one conductor layer 33 formed along the first substrate 34S1 is called the first conductor layer 33S1, and the other conductor layer 33 is called the second conductor layer 33S2. Moreover, one conductor layer 33 formed along the second substrate 34S2 is called the third conductor layer 33S3, and the other conductor layer 33 is called the fourth conductor layer 33S4. Moreover, one conductor layer 33 formed along the third substrate 34S3 is called the fifth conductor layer 33S5, and the other conductor layer 33 is called the sixth conductor layer 33S6. Moreover, one conductor layer 33 formed along the fourth substrate 34S4 will be referred to as the seventh conductor layer 33S7, and the other conductor layer 33 will be referred to as the eighth conductor layer 33S8. Moreover, one conductor layer 33 formed along the fifth substrate 34S5 will be referred to as the ninth conductor layer 33S9, and the other conductor layer 33 will be referred to as the tenth conductor layer 33S10. Moreover, one conductor layer 33 formed along the sixth substrate 34S6 will be referred to as the eleventh conductor layer 33S11, and the other conductor layer 33 will be referred to as the twelfth conductor layer 33S12.

[0065] As shown in FIG. 21, the first conductor layer 33S1 and the second conductor layer 33S2 formed on the first substrate 34S1 are connected in parallel. The third conductor layer 33S3 and the fourth conductor layer 33S4 formed on the second substrate 34S2 are connected in parallel. The fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in parallel. The seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 are connected in parallel. The ninth conductor layer 33S9 and the tenth conductor layer 33S10 formed on the fifth substrate 34S5 are connected in parallel. The eleventh conductor layer 33S11 and the twelfth conductor layer 33S12 formed on the sixth substrate 34S6 are connected in parallel.

[0066] The first conductor layer 33S1 and the second conductor layer 33S2 formed on the first substrate 34S1 and the seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 are connected in series through the first series connection part 50S1. The third conductor layer 33S3 and the fourth conductor layer 33S4 formed on the second substrate 34S2 and the ninth conductor layer 33S9 and the tenth conductor layer 33S10 formed on the fifth substrate 34S5 are connected in series through the second series connection part 50S2. The fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 and the eleventh conductor layer 33S11 and the twelfth conductor layer 33S12 formed on the sixth substrate 34S6 are connected in series through the third series connection part 50S3. Furthermore, the conductor layers 33S1, 33S2, 33S7, and 33S8 connected by the first series connection portion 50S1, the conductor layers 33S3, 33S4, 33S9, and 33S10 connected by the second series connection portion 50S2, and the conductor layers 33S5, 33S6, 33S11, and 33S12 connected by the third series connection portion 50S3 are connected in parallel via the parallel connection portion 52. With this configuration as well, as with the motor 58 of the third embodiment, loss due to circulating current circulating between the conductor layers 33 can be suppressed.

[0067] In addition, in the coil body 32 in which six substrates 34 are laminated, as shown in FIG. 22, the first conductor layer 33S1 and the second conductor layer 33S2 formed on the first substrate 34S1 and the fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in series via a first series connection portion 50S1, and the third conductor layer 33S3 and the fourth conductor layer 33S4 formed on the second substrate 34S2 and the seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 are connected in series via a second series connection portion 50S1. the fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 and the ninth conductor layer 33S9 and the tenth conductor layer 33S10 formed on the fifth substrate 34S5 are connected in series via the third series connection section 50S3; and the seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 and the eleventh conductor layer 33S11 and the twelfth conductor layer 33S12 formed on the sixth substrate 34S6 are connected in series via the fourth series connection section 50S4. Also, the conductor layers 33S1, 33S2, 33S5, 33S6, 33S9, and 33S10 connected by the first series connection portion 50S1 and the third series connection portion 50S3 are connected in parallel to the conductor layers 33S3, 33S4, 33S7, 33S8, 33S11, and 33S12 connected by the second series connection portion 50S2 and the fourth series connection portion 50S4 via the parallel connection portion 52. In this configuration, as in the motor 58 of the third embodiment, the loss due to the circulating current circulating between the conductor layers 33 can be suppressed. The configuration shown in FIG. 22 is a configuration in which the configuration shown in the third embodiment (see FIGS. 17 and 18) is applied to a coil body 32 in which a plurality of substrates 34 are stacked to form six layers.

[0068] (Fourth embodiment) A motor 60 of the fourth embodiment will be described with reference to Fig. 23. Note that in the motor 60 of the fourth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are denoted by the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0069] As shown in FIG. 23, the motor 60 of this embodiment is a motor (herein referred to as a "double axial type motor") configured such that magnets 18 are disposed on both axial sides of the coil body 32. The coil body 32 of the motor 60 of this embodiment is configured such that four substrates 34 are stacked. Here, the four substrates 34 are referred to as a first substrate 34S1, a second substrate 34S2, a third substrate 34S3, and a fourth substrate 34S4 in order from the magnet 18 side on one side to the magnet 18 side on the other side. The center position 70 in the axial direction of the four substrates 34 is the center between the second substrate 34S2 and the third substrate 34S3.

[0070] The first conductor layer 33S1 and the second conductor layer 33S2 formed on the first substrate 34S1 and the fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in series via the first series connection part 50S1. The third conductor layer 33S3 and the fourth conductor layer 33S4 formed on the second substrate 34S2 and the seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 are connected in series via the second series connection part 50S2. This allows the induced voltage generated between the conductor layers 33S1, 33S2, 33S5, and 33S6 connected by the first series connection part 50S1 to be close to the induced voltage generated between the conductor layers 33S3, 33S4, 33S7, and 33S8 connected by the second series connection part 50S2. By connecting in parallel via the parallel connection parts 52 the conductor layers 33S1, 33S2, 33S5, and 33S6 connected by the first series connection part 50S1 and the conductor layers 33S3, 33S4, 33S7, and 33S8 connected by the second series connection part 50S2, it is possible to suppress losses due to circulating currents circulating between the conductor layers 33S1, 33S2, 33S5, and 33S6 and the conductor layers 33S3, 33S4, 33S7, and 33S8, thereby achieving high efficiency and high torque of the motor 60. The configuration of this embodiment is effective for a double axial type motor.

[0071] 24, the first conductor layer 33S1 and the second conductor layer 33S2 formed on the first substrate 34S1 are connected in series to the third conductor layer 33S3 and the fourth conductor layer 33S4 formed on the second substrate 34S2 through the first series connection part 50S1, and the fifth conductor layer 33S5 and the sixth conductor layer 33S6 formed on the third substrate 34S3 are connected in series to the seventh conductor layer 33S7 and the eighth conductor layer 33S8 formed on the fourth substrate 34S4 through the second series connection part 50S2. Also, the conductor layers 33S1, 33S2, 33S3, and 33S4 connected by the first series connection part 50S1 are connected in parallel to the conductor layers 33S5, 33S6, 33S7, and 33S8 connected by the second series connection part 50S2 through the parallel connection part 52. In this configuration as well, similar to the motor 60 of the fourth embodiment, the loss due to the circulating current circulating between the conductor layers 33 can be suppressed.

[0072] Fifth embodiment The motor of the fifth embodiment will be described with reference to Figures 25 to 27. Note that in the motor of the fifth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0073] As shown in Figs. 25 to 27, in the coil body 32 of the motor of this embodiment, the first substrate 34S1 and the second substrate 34S2 are connected via an interlayer connection portion 64, which will be described later in detail. More specifically, the first substrate 34S1 and the second substrate 34S2 are formed by one planar member 66. Conductor layers 33 are formed in the planar member 66 at portions corresponding to the first substrate 34S1 and the second substrate 34S2, respectively. In addition, a series connection portion 50 that connects the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the second substrate 34S2 in series is formed in a portion of the planar member 66 that connects the first substrate 34S1 and the second substrate 34S2 to each other. 26 and 27, the first substrate 34S1 and the second substrate 34S2 are laminated by folding back the planar member 66 at a folding back position 68. In the configuration of this embodiment, the conductor layers 33 formed on the first substrate 34S1 and the second substrate 34S2 can be formed on one planar member 66. In addition, in the configuration of this embodiment, an additional process for connecting the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the second substrate 34S2 via the series connection portion 50 can be eliminated.

[0074] Sixth embodiment The motor of the sixth embodiment will be described with reference to Figures 28 and 29. Note that in the motor of the sixth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0075] 28 and 29, in the coil body 32 of the motor of this embodiment, similarly to the coil body 32 of the motor of the fifth embodiment, the first substrate 34S1 and the second substrate 34S2 are formed by one planar member 66. In the portion of this planar member 66 connecting the first substrate 34S1 and the second substrate 34S2, a first series connection portion 50S1 that connects in series the first conductor layer 33S1 formed on the first substrate 34S1 and the fourth conductor layer 33S4 formed on the second substrate 34S2, and a second series connection portion 50S2 that connects in series the second conductor layer 33S2 formed on the first substrate 34S1 and the third conductor layer 33S3 formed on the second substrate 34S2 are formed. In the configuration of this embodiment, the conductor layers 33 formed on the first substrate 34S1 and the second substrate 34S2 can be formed on one planar member 66. In addition, in the configuration of this embodiment, it is possible to eliminate the need for an additional process for connecting the first conductor layer 33S1 formed on the first substrate 34S1 and the fourth conductor layer 33S4 formed on the second substrate 34S2 via the first series connection portion 50S1 and an additional process for connecting the second conductor layer 33S2 formed on the first substrate 34S1 and the third conductor layer 33S3 formed on the second substrate 34S2 via the second series connection portion 50S2.

[0076] Seventh embodiment The motor of the seventh embodiment will be described with reference to Figures 30 to 32. Note that in the motor of the seventh embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0077] As shown in Figs. 30 to 32, in the coil body 32 of the motor of this embodiment, the first substrate 34S1, the second substrate 34S2, and the third substrate 34S3 are connected via an interlayer connection portion 64, which will be described later in detail. More specifically, as shown in Fig. 30, the first substrate 34S1, the second substrate 34S2, and the third substrate 34S3 are formed by one planar member 66. Conductor layers 33 are formed in the planar member 66 at locations corresponding to the first substrate 34S1, the second substrate 34S2, and the third substrate 34S3, respectively. In addition, a first series connection portion 50S1 that connects the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the second substrate 34S2 in series is formed in a portion of the planar member 66 that connects the first substrate 34S1 and the second substrate 34S2 to each other in series. In addition, a second series connection portion 50S2 that connects the conductor layer 33 formed on the second substrate 34S2 and the conductor layer 33 formed on the third substrate 34S3 in series is formed in the portion of the planar member 66 that connects the second substrate 34S2 and the third substrate 34S3 in series is formed. As shown in Figs. 30 and 31, the planar member 66 is folded back at a first folding position 68S1, so that the first substrate 34S1 and the second substrate 34S2 are stacked. As shown in Figs. 31 and 32, the planar member 66 is folded back at a second folding position 68S2, so that the second substrate 34S2 and the third substrate 34S3 are stacked, so that the first substrate 34S1, the second substrate 34S2, and the third substrate 34S3 are stacked. In the configuration of this embodiment, the conductor layers 33 formed on the first substrate 34S1, the second substrate 34S2, and the third substrate 34S3 can be formed on one planar member 66. In addition, in the configuration of this embodiment, it is possible to eliminate the need for an additional process for connecting the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the second substrate 34S2 via the first series connection portion 50S1 and an additional process for connecting the conductor layer 33 formed on the second substrate 34S2 and the conductor layer 33 formed on the third substrate 34S3 via the second series connection portion 50S2.

[0078] Eighth embodiment The motor of the eighth embodiment will be described with reference to Figures 33 to 37. Note that in the motor of the eighth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0079] As shown in Figs. 33 and 34, in the coil body 32 of the motor of this embodiment, the first substrate 34S1 and the third substrate 34S3 are connected via an interlayer connection portion 64, which will be described later in detail. More specifically, as shown in Fig. 30, the first substrate 34S1 and the third substrate 34S3 are formed by one planar member 66. Conductor layers 33 are formed in the planar member 66 at portions corresponding to the first substrate 34S1 and the third substrate 34S3, respectively. In addition, a series connection portion 50 that connects the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the third substrate 34S3 in series is formed in the portion of the planar member 66 that connects the first substrate 34S1 and the third substrate 34S3 to each other. As shown in Figs. 34 to 36, the planar member 66 is folded back at the folding back position 68, so that the first substrate 34S1 and the third substrate 34S3 are laminated. Here, when the planar member 66 is folded back at the folding back position 68, the second substrate 34S2 is disposed between the first substrate 34S1 and the third substrate 34S3. As a result, as shown in Figs. 34 and 37, the first substrate 34S1, the second substrate 34S2, and the third substrate 34S3 are laminated. In the configuration of this embodiment, the conductor layers 33 formed on the first substrate 34S1 and the third substrate 34S3 can be formed on one planar member 66. In addition, in the configuration of this embodiment, an additional process for connecting the conductor layers 33 formed on the first substrate 34S1 and the third substrate 34S3 via the series connection portion 50 can be eliminated.

[0080] Ninth embodiment The motor of the ninth embodiment will be described with reference to Fig. 38. Note that in the motor of the ninth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0081] As shown in FIG. 38, in the coil body 32 of the motor of this embodiment, the first substrate 34S1 and the second substrate 34S2 are connected via an interlayer connection portion 64. The first substrate 34S1 and the second substrate 34S2 of the coil body 32 of the motor of this embodiment correspond to the second substrate 34S2 and the third substrate 34S3 and the first substrate 34S1 and the fourth substrate 34S4, respectively, in the coil body 32 of the motor 58 of the third embodiment described above. More specifically, the first substrate 34S1 and the second substrate 34S2 are formed by one planar member 66. In the planar member 66, the U-phase conductor layer 33U, the V-phase conductor layer 33V, and the W-phase conductor layer 33W are formed at the portions corresponding to the first substrate 34S1 and the second substrate 34S2, respectively. In addition, in the interlayer connection portion 64 that connects the first substrate 34S1 and the second substrate 34S2 in the planar member 66, a U-phase series connection portion 50U that connects in series the U-phase conductor layer 33U formed on the first substrate 34S1 and the U-phase conductor layer 33U formed on the second substrate 34S2 is formed. In addition, in the interlayer connection portion 64, a V-phase series connection portion 50V that connects in series the V-phase conductor layer 33V formed on the first substrate 34S1 and the V-phase conductor layer 33V formed on the second substrate 34S2 is formed. In addition, in the interlayer connection portion 64, a W-phase series connection portion 50W that connects in series the W-phase conductor layer 33W formed on the first substrate 34S1 and the W-phase conductor layer 33W formed on the second substrate 34S2 is formed. Further, the interlayer connection portion 64 is formed with an input / output portion 43 which serves as an input path of a current to each conductor layer 33 or an output path of a current from the conductor layer 33. The U-phase series connection portion 50U, the V-phase series connection portion 50V, and the W-phase series connection portion 50W correspond, as an example, to the first series connection portion 50S1 and the second series connection portion 50S2 in the coil body 32 of the motor 58 of the third embodiment described above. The first substrate 34S1 and the second substrate 34S2 are laminated by folding back the planar member 66 at a folding back position 68 of the interlayer connection portion 64.In addition, in this embodiment, before the planar member 66 is folded back at the folding position 68 of the interlayer connection portion 64, the U-phase conductor layer 33U, the V-phase conductor layer 33V, and the W-phase conductor layer 33W formed on the first substrate 34S1 and the U-phase conductor layer 33U, the V-phase conductor layer 33V, and the W-phase conductor layer 33W formed on the second substrate 34S2 are configured symmetrically with respect to the folding position 68.

[0082] In the configuration of the present embodiment described above, it is possible to eliminate the need for an additional process for connecting the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the second substrate 34S2 via the series connection portion 50. In addition, by providing an interlayer connection portion 64 that connects the first substrate 34S1 and the second substrate 34S2 and folding back at a predetermined folding position 68 in the interlayer connection portion 64, it is possible to ensure the positional accuracy of the first substrate 34S1 and the second substrate 34S2. Note that the above-mentioned parallel connection portion 52 may be formed in the interlayer connection portion 64.

[0083] Tenth embodiment The motor of the tenth embodiment will be described with reference to Fig. 39. Note that in the motor of the tenth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0084] 39, the coil body 32 of the motor of this embodiment includes a first substrate 34S1 and a second substrate 34S2 in which the first substrate 34S1 and the second substrate 34S2 are connected via an interlayer connection portion 64. The first substrate 34S1 and the second substrate 34S2 of the coil body 32 of the motor of this embodiment correspond, as an example, to the first substrate 34S1 and the second substrate 34S2 in the coil body 32 of the motor 58 of the first embodiment described above, respectively. In the configuration of this embodiment, too, an additional process for connecting the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the second substrate 34S2 via the series connection portion 50 can be eliminated.

[0085] Eleventh embodiment The motor of the eleventh embodiment will be described with reference to Figures 40 and 41. Note that in the motor of the eleventh embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0086] As shown in Fig. 40, the coil body 32 of the motor of this embodiment is configured similarly to the coil body 32 of the motor of the ninth embodiment (see Fig. 38) except for the following points. In the coil body 32 of the motor of this embodiment, before the planar member 66 is folded back at the folding back position 68 of the interlayer connection portion 64, the U-phase conductor layer 33U, the V-phase conductor layer 33V, and the W-phase conductor layer 33W formed on the first substrate 34S1 and the U-phase conductor layer 33U, the V-phase conductor layer 33V, and the W-phase conductor layer 33W formed on the second substrate 34S2 are configured in the same pattern. Then, by folding back the planar member 66 at the folding back position 68 of the interlayer connection portion 64, the first substrate 34S1 and the second substrate 34S2 are laminated as shown in Fig. 41. Furthermore, in a state in which the first substrate 34S1 and the second substrate 34S2 are stacked, the plurality of conductors 16B formed on the first substrate 34 and the plurality of conductors 16B formed on the second substrate 34 are disposed at the same positions in the circumferential direction. In a state in which the first substrate 34 and the second substrate 34 are stacked, the plurality of conductors 16B formed on the first substrate 34 and the plurality of conductors 16B formed on the substrate 34 of the other layer overlap in the axial direction.

[0087] Also in the configuration of the present embodiment described above, it is possible to eliminate the need for an additional process for connecting the conductor layer 33 formed on the first substrate 34S1 and the conductor layer 33 formed on the second substrate 34S2 via the series connection portion 50. Furthermore, by forming the U-phase conductor layer 33U, the V-phase conductor layer 33V, and the W-phase conductor layer 33W formed on the first substrate 34S1 and the U-phase conductor layer 33U, the V-phase conductor layer 33V, and the W-phase conductor layer 33W formed on the second substrate 34S2 in the same pattern, it is possible to suppress an increase in the number of design steps for the conductor layer 33 formed on each substrate 34.

[0088] Twelfth embodiment The motor of the twelfth embodiment will be described with reference to Figures 42 and 43. Note that in the motor of the twelfth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0089] As shown in Figs. 42 and 43, in the coil body 32 of the motor of this embodiment, a first substrate 34S1 and a second substrate 34S2 are laminated. Here, a pair of input / output parts 43, which are current input paths to the conductor layer 33 formed on the first substrate 34S1 or current output paths from the conductor layer 33, extend radially outward from the outer periphery of the first substrate 34S1. The pair of input / output parts 43 are arranged at intervals in the circumferential direction. In addition, a pair of input / output parts 43, which are current input paths to the conductor layer 33 formed on the second substrate 34S2 or current output paths from the conductor layer 33, extend radially outward from the outer periphery of the second substrate 34S2. The pair of input / output parts 43 are arranged at intervals in the circumferential direction. Then, one of the input / output parts 43 (one side in the circumferential direction) extending from the first board 34S1 and one of the input / output parts 43 (the other side in the circumferential direction) extending from the second board 34S2 are disposed at the same position in the circumferential direction. This allows the input / output part 43 (one side in the circumferential direction) extending from the first board 34S1 and the input / output part 43 (the other side in the circumferential direction) extending from the second board 34S2 to be disposed close to each other in a state in which the first board 34S1 and the second board 34S2 are stacked. As a result, it is possible to easily perform the connection work between the input / output part 43 (one side in the circumferential direction) extending from the first board 34S1 and the input / output part 43 (the other side in the circumferential direction) extending from the second board 34S2.

[0090] Thirteenth embodiment The motor of the thirteenth embodiment will be described with reference to Figures 44 and 45. Note that in the motor of the thirteenth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0091] 44 and 45, 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, except that a pair of input / output parts 43 extend radially inward from the inner peripheries of the first board 34S1 and the second board 34S2. The coil body 32 of the motor of this embodiment can also facilitate the connection work between one input / output part 43 (one circumferential side) extending from the first board 34S1 and one input / output part 43 (the other circumferential side) extending from the second board 34S2.

[0092] Fourteenth embodiment The motor of the fourteenth embodiment will be described with reference to Figures 46 and 47. Note that in the motor of the fourteenth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0093] As shown in FIG. 46 and FIG. 47, in the coil body 32 of the motor of this embodiment, a first substrate 34S1 and a second substrate 34S2 are laminated. Here, a pair of U-phase input / output parts 43U, which are current input paths to the U-phase conductor layer 33U formed on the first substrate 34S1 or current output paths from the U-phase conductor layer 33U, extend radially outward from the outer periphery of the first substrate 34S1. The pair of U-phase input / output parts 43U are arranged with a gap in the circumferential direction. As an example, the gap θ in the circumferential direction between the pair of U-phase input / output parts 43U is set to (360° / number of slots×2). In addition, a pair of V-phase input / output parts 43V, which are current input paths to the V-phase conductor layer 33V formed on the first substrate 34S1 or current output paths from the V-phase conductor layer 33V, extend radially outward from the outer periphery of the first substrate 34S1. The pair of V-phase input / output parts 43V are arranged at a circumferential interval on one side of the circumferential direction relative to the pair of U-phase input / output parts 43U. The circumferential interval θ between the pair of V-phase input / output parts 43V is also set to (360° / number of slots×2). In addition, a pair of W-phase input / output parts 43W, which are current input paths to the W-phase conductor layer 33W formed on the first substrate 34S1 or current output paths from the W-phase conductor layer 33W, extend radially outward from the outer periphery of the first substrate 34S1. The pair of W-phase input / output parts 43W are arranged at a circumferential interval. The pair of W-phase input / output parts 43W are arranged at a circumferential interval on one side of the circumferential direction relative to the pair of V-phase input / output parts 43V. The circumferential interval θ between the pair of W-phase input / output parts 43W is also set to (360° / number of slots×2). The U-phase conductor layer 33U, V-phase conductor layer 33V, W-phase conductor layer 33W, a pair of U-phase input / output units 43U, a pair of V-phase input / output units 43V and a pair of W-phase input / output units 43W formed on the second substrate 34S2 have the same configuration as the U-phase conductor layer 33U, V-phase conductor layer 33V, W-phase conductor layer 33W, a pair of U-phase input / output units 43U, a pair of V-phase input / output units 43V and a pair of W-phase input / output units 43W formed on the first substrate 34S1, respectively.

[0094] Then, as shown in FIG. 47, the first substrate 34S1 and the second substrate 34S2 are stacked at a position where the second substrate 34S2 is rotated θ° to one side in the circumferential direction with respect to the first substrate 34S1. As a result, one U-phase input / output unit 43U extending from the first substrate 34S1 and one U-phase input / output unit 43U extending from the second substrate 34S2 are arranged at the same circumferential position and close to each other. Also, one V-phase input / output unit 43V extending from the first substrate 34S1 and one V-phase input / output unit 43V extending from the second substrate 34S2 are arranged at the same circumferential position and close to each other. Furthermore, one W-phase input / output unit 43W extending from the first substrate 34S1 and one W-phase input / output unit 43W extending from the second substrate 34S2 are arranged at the same circumferential position and close to each other. By doing this, in the coil body 32 of the motor of this embodiment, it is possible to easily connect one U-phase input / output portion 43U extending from the first board 34S1 to one U-phase input / output portion 43U extending from the second board 34S2, connect one V-phase input / output portion 43V extending from the first board 34S1 to one V-phase input / output portion 43V extending from the second board 34S2, and connect one W-phase input / output portion 43W extending from the first board 34S1 to one W-phase input / output portion 43W extending from the second board 34S2.

[0095] Fifteenth embodiment The motor of the fifteenth embodiment will be described with reference to Figures 48 and 49. Note that in the motor of the fifteenth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0096] As shown in Figures 48 and 49, the coil body 32 of the motor of this embodiment is configured in the same manner as the coil body 32 of the motor of the 14th embodiment, except that a pair of U-phase input / output sections 43U, a pair of V-phase input / output sections 43V and a pair of W-phase input / output sections 43W extend radially inward from the inner periphery of the first substrate 34S1 and the second substrate 34S2. In the coil body 32 of the motor of this embodiment, it is also possible to easily connect one U-phase input / output portion 43U extending from the first board 34S1 to one U-phase input / output portion 43U extending from the second board 34S2, to one V-phase input / output portion 43V extending from the first board 34S1 to one V-phase input / output portion 43V extending from the second board 34S2, and to connect one W-phase input / output portion 43W extending from the first board 34S1 to one W-phase input / output portion 43W extending from the second board 34S2.

[0097] Sixteenth embodiment The motor of the sixteenth embodiment will be described with reference to Fig. 50. Note that in the motor of the sixteenth embodiment, members and parts corresponding to the motor 10 described above and the motor 54 of each embodiment are given the same reference numerals as the members and parts corresponding to the motor 10 described above, and descriptions thereof may be omitted.

[0098] 50, the coil body 32 of the motor of this embodiment is configured by stacking the coil body 32 of the motor of the above-mentioned 14th embodiment and the coil body 32 of the motor of the 15th embodiment. Therefore, the coil body 32 of the motor of this embodiment also facilitates the connection work between one U-phase input / output portion 43U extending from the first board 34S1 and one U-phase input / output portion 43U extending from the second board 34S2, the connection work between one V-phase input / output portion 43V extending from the first board 34S1 and one V-phase input / output portion 43V extending from the second board 34S2, and the connection work between one W-phase input / output portion 43W extending from the first board 34S1 and one W-phase input / output portion 43W extending from the second board 34S2.

[0099] Although each embodiment of the present disclosure has been described above, the present disclosure is not limited to the above, and can be modified in various ways without departing from the spirit of the present disclosure. In addition, all or part of the configurations of each embodiment described above can be combined with each other. For example, the configurations of each embodiment 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 including a coil body 32. In addition, in the description of each embodiment of the present disclosure, the substrate 34, the conductor layer 33, and the series connection portion 50 are described with numbers such as "first" and "second", but these numbers are numbers given for convenience of description. Therefore, it does not mean that these numbers must be exactly the same as the numbers described in the claims.

[0100] <Additional Notes> (Appendix 1) A plurality of base members (34) formed in a radially extending shape using an insulating material and stacked in an axial direction; A plurality of conductor layers (33) formed on the plurality of base members, respectively, using a conductive material; a first series connection portion (50) that connects in series the first conductor layer formed on the first base member and the first conductor layer formed on the second base member; a second series connection portion that connects in series the second conductor layer formed on the first base member and the second conductor layer formed on the second base member; a parallel connection portion (52) that connects in parallel each of the conductor layers connected in the first series connection portion and each of the conductor layers connected in the second series connection portion; A coil body (32) equipped with the (Appendix 2) A plurality of base members (34) formed in a radially extending shape using an insulating material and stacked in an axial direction; A plurality of conductor layers (33) formed on the plurality of base members, respectively, using a conductive material; a first series connection portion (50) that connects in series a plurality of the conductor layers formed on the first base member and connected in parallel to each other and a plurality of the conductor layers formed on the second base member and connected in parallel to each other; a second series connection portion that connects in series a plurality of the conductor layers formed on the third base member and connected in parallel to each other and a plurality of the conductor layers formed on the fourth base member and connected in parallel to each other; a parallel connection portion (52) that connects in parallel each of the conductor layers connected in the first series connection portion and each of the conductor layers connected in the second series connection portion; A coil body (32) equipped with the (Appendix 3) a third base member is provided between the first base member and the second base member; the first conductor layer formed on the first base member and the first conductor layer formed on the second base member are connected via the first series connection portion and the first conductor layer formed on the third base member; A coil body as described in Appendix 1, in which the second conductor layer formed on the first base member and the second conductor layer formed on the second base member are connected via the second series connection portion and the second conductor layer formed on the third base member. (Appendix 4) a plurality of conductor layers formed on a first base member arranged on one axial side with respect to a central position (70) of the plurality of base members in the axial direction, and a plurality of conductor layers formed on a third base member arranged on the other axial side with respect to the central position are connected via a first series connection portion; a plurality of the conductor layers formed on the second base member disposed on one axial side with respect to the central position and a plurality of the conductor layers formed on the fourth base member disposed on the other axial side with respect to the central position are connected via the second series connection portion; 3. The coil body of claim 2, wherein each of the conductor layers connected in the first series connection portion and each of the conductor layers connected in the second series connection portion are connected via the parallel connection portion. (Appendix 5) a plurality of the conductor layers formed on a first base member arranged on one axial side of a central position (70) of the plurality of the base members, and a plurality of the conductor layers formed on a second base member arranged on one axial side of the central position are connected via the first series connection portion; a plurality of the conductor layers formed on the third base member disposed on the other axial side with respect to the central position and a plurality of the conductor layers formed on the fourth base member disposed on the other axial side with respect to the central position are connected via the second series connection portion; 3. The coil body of claim 2, wherein each of the conductor layers connected in the first series connection portion and each of the conductor layers connected in the second series connection portion are connected via the parallel connection portion. (Appendix 6) an interlayer connection portion (64) for connecting one of the base members to another of the base members; 6. The coil body according to any one of Supplementary Note 1 to Supplementary Note 5, wherein at least one of the series connection portion connecting the conductor layer formed on one of the base members and the conductor layer formed on the other of the base members, the parallel connection portion connecting the conductor layer formed on one of the base members and the conductor layer formed on the other of the base members, and an input / output portion (43) serving as an input path of current to the conductor layer or an output path of current from the conductor layer is formed on the interlayer connection portion. (Appendix 7) 7. A coil body as described in claim 6, in which one base member and another base member connected via the interlayer connection portion are stacked in the axial direction with a portion of the interlayer connection portion bent. (Appendix 8) 8. A coil body according to any one of Supplementary Note 1 to Supplementary Note 7, in which an input / output section serving as a current input path to the conductor layer formed on one of the base members or a current output path from the conductor layer, and an input / output section (43) serving as a current input path to the conductor layer formed on another of the base members or a current output path from the conductor layer, are each arranged at the same circumferential position. (Appendix 9) The coil body described in Appendix 8, wherein the base member from which the input / output portion extends radially outward and the base member from which the input / output portion extends radially inward are stacked in the axial direction. (Appendix 10) An armature (14) comprising the coil body according to any one of Supplementary Note 1 to Supplementary Note 9. (Appendix 11) The armature core (26) is formed using a soft magnetic material, 11. The armature according to claim 10, wherein the armature core and the coil body are arranged opposite to each other in the axial direction with a portion of the armature core not being disposed between the conductor layers formed on each of the base members. (Appendix 12) One of a stator (14) and a rotor (12) including the armature according to claim 10 or 11; the other of the stator and the rotor having a magnet (18) arranged axially opposite the coil body; A rotating electric machine (10, 54, 56, 58, 60) equipped with the above structure. [Explanation of symbols]

[0101] 10 motor (rotating electric machine), 12 rotor (rotor), 14 stator (armature, stator), 18 magnet, 26 stator core (armature core), 32 coil body, 33 conductor layer, 34 substrate (base member), 43 input / output section, 50 series connection section, 52 parallel connection section, 64 interlayer connection section, 70 center position, 54 motor (rotating electric machine), 56 motor (rotating electric machine), 58 motor (rotating electric machine), 60 motor (rotating electric machine)

Claims

1. a plurality of base members (34) formed in a shape extending in a radial direction using an insulating material and stacked in an axial direction; a plurality of conductor layers (33) formed on the plurality of base members using a conductive material; a first series connection portion (50) that connects in series the first conductor layer formed on the first base member and the first conductor layer formed on the second base member; a second series connection portion that connects in series the second conductor layer formed on the first base member and the second conductor layer formed on the second base member; a parallel connection section (52) that connects in parallel each of the conductor layers connected by the first series connection section and each of the conductor layers connected by the second series connection section; A coil body (32) comprising:

2. a plurality of base members (34) formed in a shape extending in a radial direction using an insulating material and stacked in an axial direction; a plurality of conductor layers (33) formed on the plurality of base members using a conductive material; a first series connection portion (50) that connects in series a plurality of the conductor layers formed on the first base member and connected in parallel to one another and a plurality of the conductor layers formed on the second base member and connected in parallel to one another; a second series connection portion that connects in series the plurality of conductor layers formed on the third base member and connected in parallel to one another and the plurality of conductor layers formed on the fourth base member and connected in parallel to one another; a parallel connection section (52) that connects in parallel each of the conductor layers connected by the first series connection section and each of the conductor layers connected by the second series connection section; A coil body (32) comprising:

3. a third base member is provided between the first base member and the second base member; the first conductor layer formed on the first base member and the first conductor layer formed on the second base member are connected via the first series connection portion and the first conductor layer formed on the third base member; 2. A coil body as described in claim 1, wherein the second conductor layer formed on the first base member and the second conductor layer formed on the second base member are connected via the second series connection portion and the second conductor layer formed on the third base member.

4. a plurality of conductor layers formed on a first base member arranged on one axial side of a center position (70) of the plurality of base members in the axial direction, and a plurality of conductor layers formed on a second base member arranged on the other axial side of the center position, are connected via the first series connection portion; a plurality of the conductor layers formed on the third base member disposed on one axial side of the central position and a plurality of the conductor layers formed on the fourth base member disposed on the other axial side of the central position are connected via the second series connection portion; 3. The coil body according to claim 2, wherein each of the conductor layers connected by the first series connection portion and each of the conductor layers connected by the second series connection portion are connected via the parallel connection portion.

5. The plurality of conductor layers formed on the first base member arranged on one axial side with respect to the axial center position (70) of the plurality of base members, and the plurality of conductor layers formed on the second base member arranged on one axial side with respect to the center position are the first are connected via a series connection, a plurality of the conductor layers formed on the third base member disposed on the other axial side of the central position and a plurality of the conductor layers formed on the fourth base member disposed on the other axial side of the central position are connected via the second series connection portion, 3. The coil body according to claim 2, wherein each of the conductor layers connected by the first series connection portion and each of the conductor layers connected by the second series connection portion are connected via the parallel connection portion.

6. an interlayer connection portion (64) that connects one of the base members to another of the base members; 2. The coil body according to claim 1, wherein at least one of the series connection portion connecting the conductor layer formed on one of the base members with the conductor layer formed on another of the base members, the parallel connection portion connecting the conductor layer formed on one of the base members with the conductor layer formed on another of the base members, and an input / output portion (43) which serves as an input path for current to the conductor layer or an output path for current from the conductor layer is formed on the interlayer connection portion.

7. 7. The coil body according to claim 6, wherein one of the base members and another of the base members connected via the interlayer connection portion are stacked in the axial direction with a portion of the interlayer connection portion bent.

8. 2. A coil body as described in claim 1, wherein an input / output section which serves as a current input path to the conductor layer formed on one of the base members or a current output path from the conductor layer, and an input / output section (43) which serves as a current input path to the conductor layer formed on another of the base members or a current output path from the conductor layer, are each arranged at the same circumferential position.

9. The coil body according to claim 8, wherein the base member in which the input / output portions extend radially outward and the base member in which the input / output portions extend radially inward are stacked in the axial direction.

10. An armature (14) comprising the coil body according to any one of claims 1 to 9.

11. The armature core (26) is formed using a soft magnetic material.

11. The armature according to claim 10, wherein the armature core and the coil body are arranged to face each other in the axial direction, with a portion of the armature core not being positioned between the conductor layers formed on each of the base members.

12. One of a stator (14) and a rotor (12) comprising the armature of claim 10; the other of the stator and the rotor having a magnet (18) arranged axially opposite the coil body; A rotating electric machine (10, 54, 56, 58, 60) comprising:

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