JP2016005350A - Axial gap rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the possibility of a damaged coil when the coil is attached to a slot.SOLUTION: An axial gap rotary electric machine includes: a rotor fixed on a revolving shaft; a stator disposed with a gap between with the rotor along the axial direction of the revolving shaft; and a housing for accommodating the rotor and the stator. The stator includes: a plurality of cores which are disposed according to the circumferential direction of the revolving shaft; a stator coil; and a core retention member which holds the plurality of cores. In a slot which is formed by mutually neighboring cores, there is provided a coil restriction part which contacts to a part of the peripheral surface of the stator coil in the slot, to thereby restrict the movement of the stator coil in the circumferential direction.

Description

  The present invention relates to an axial gap type rotating electrical machine.

  2. Description of the Related Art An axial gap type rotating electrical machine in which a rotor and a stator are arranged side by side in an axial direction with a gap is known. Patent Document 1 describes an electromagnetic coil comprising a plurality of conductor bars that have electrical conductivity and are joined together at tips that should be electrically connected to each other.

JP 2006-288074 A

  In Patent Document 1, a conductor bar constituting a stator coil is fitted and fixed to each slot between stator cores (cores). For this reason, when the stator coil is fitted into the slot, there is a high possibility that the coil is rubbed against the circumferential side surface of the core and the insulating coating of the coil is damaged.

  The axial gap type rotating electrical machine according to claim 1 is a rotor fixed to a rotating shaft, a stator disposed via a rotor and a gap along an axial direction of the rotating shaft, and the rotor and the stator. And the stator has a plurality of cores arranged along the circumferential direction of the rotating shaft, a stator coil, and a core holding member that holds the plurality of cores, and adjacent cores. Is provided with a coil restricting portion for restricting movement of the stator coil in the circumferential direction by contacting a part of the circumferential surface of the stator coil in the slot.

  ADVANTAGE OF THE INVENTION According to this invention, when mounting a stator coil in the slot of a stator, possibility that a stator coil will be damaged can be reduced.

The perspective view which shows the structure of the axial gap type rotary electric machine which concerns on the 1st Embodiment of this invention. The cross-sectional schematic diagram which looked at the axial gap type rotary electric machine which concerns on the 1st Embodiment of this invention from the radial direction of the rotating shaft. The perspective view which abbreviate | omitted illustration of the structural material in the rotor of FIG. The perspective view which shows the stator of FIG. The perspective view which shows a core holding structure. The figure for demonstrating the method to attach a core to a holding member. Schematic which shows the state which has arrange | positioned the single phase coil with respect to the core holding structure. The figure which abbreviate | omitted three coil pieces 6 among the four coil pieces which comprise the single phase coil of FIG. (A) is the schematic which shows a coil piece, (b) is the schematic which shows the state which connected two coil pieces. The cross-sectional schematic diagram of a stator. Schematic which showed the method of mounting | wearing with a stator coil with respect to a core holding structure. The cross-sectional schematic diagram of the stator of the axial gap type rotary electric machine which concerns on the modification 1-1. The cross-sectional schematic diagram of the stator of the axial gap type rotary electric machine which concerns on modification 1-2. The cross-sectional schematic diagram of the stator of the axial gap type rotary electric machine which concerns on the modification 1-3. The schematic diagram which shows the positioning structure of the single phase coil of the axial gap type rotary electric machine which concerns on the modification 1-3. The schematic diagram which shows the positioning structure of the coil piece of the axial gap type rotary electric machine which concerns on modification 1-3. The schematic diagram which looked at the core holding structure of the axial gap type rotary electric machine which concerns on modification 1-4 from the axial direction. The partial expansion schematic diagram which shows the positioning structure of the coil piece of the axial gap type rotary electric machine which concerns on the modification 1-4. The schematic diagram which looked at the core holding structure of the axial gap type rotary electric machine which concerns on modification 1-5 from the axial direction. The cross-sectional schematic diagram of the stator applied to the axial gap type rotary electric machine which concerns on the 2nd Embodiment of this invention. The cross-sectional schematic diagram of the stator applied to the axial gap type rotary electric machine which concerns on the 3rd Embodiment of this invention. The cross-sectional schematic diagram of the stator applied to the axial gap type rotary electric machine which concerns on the 4th Embodiment of this invention. The perspective view which shows the coil piece which concerns on the 4th Embodiment of this invention. The cross-sectional schematic diagram of the stator applied to the axial gap type rotary electric machine which concerns on the 5th Embodiment of this invention. The perspective view which shows the coil piece which concerns on the 5th Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. The axial gap type rotating electrical machine according to the present invention can be applied to, for example, a pure electric vehicle that runs only by a rotating electrical machine, or a hybrid type electric vehicle that is driven by both an engine and a rotating electrical machine.

-First embodiment-
FIG. 1 is a perspective view showing a configuration of an axial gap type rotating electrical machine according to the first embodiment of the present invention, and FIG. 2 shows a rotating shaft of the axial gap type rotating electrical machine according to the first embodiment of the present invention. It is the cross-sectional schematic diagram seen from the radial direction. In addition, in FIG. 1, illustration of the rotating shaft 30 (refer FIG. 2) is abbreviate | omitted.

  The axial gap type rotating electric machine 100 includes a rotating shaft 30 (see FIG. 2), a pair of rotors (hereinafter referred to as rotor 2) fixed to the rotating shaft 30, and an annular shape disposed between the pair of rotors 2. And a housing 25 (see FIG. 2) that accommodates the pair of rotors 2 and the stator 1.

  A rotating electrical machine 100 according to the present embodiment is a 2-rotor 1-stator axial gap rotating electrical machine having a structure in which a stator 1 is sandwiched between a pair of rotors 2 via a predetermined gap (gap). Compared with a single stator type axial gap type rotating electrical machine, more magnetic flux can be used, which is advantageous in terms of higher efficiency and higher output density.

  As shown in FIG. 2, the housing 25 includes a cylindrical center bracket 25c, and a front bracket 25f and a rear bracket 25r that close both ends of the center bracket 25c. A space surrounded by the center bracket 25c, the front bracket 25f, and the rear bracket 25r is an accommodation space for accommodating the pair of rotors 2, the stator 1, and the holding member 4. The front bracket 25f is provided with a through hole through which the rotary shaft 30 passes, and a bearing 31 is provided in the through hole. The rotating shaft 30 is rotatably held by a bearing 31.

  The pair of rotors 2 are arranged to face each other at a predetermined interval in the axial direction of the rotating shaft 30 (hereinafter also simply referred to as the axial direction). Since the pair of rotors 2 have the same shape, one rotor 2 will be described as a representative. The rotor 2 is provided with a shaft hole 2h (see FIG. 1) through which the rotary shaft 30 is inserted. The rotor 2 is integrated with the rotating shaft 30 by inserting and fixing the rotating shaft 30 into the shaft hole 2h.

  FIG. 3 is a perspective view in which the illustration of the structural member 32 in the rotor 2 of FIG. 1 is omitted, that is, only the magnet 3 of the rotor 2 is shown. The rotor 2 includes eight permanent magnets (hereinafter simply referred to as magnets 3) and a disk-shaped structural member 32 (see FIG. 1) to which the magnets 3 are fixed. The magnet 3 may be a neodymium-based or samarium-based sintered magnet, a ferrite magnet, a neodymium-based bonded magnet, or the like.

  The structural member 32 is provided with a recess into which the magnet 3 is fitted along the circumferential direction of the rotating shaft 30 (hereinafter also simply referred to as the circumferential direction). In the recess, the magnets 3 are arranged at equal intervals along the circumferential direction. The magnet 3 is magnetized in the axial direction, and one side in the axial direction is an S pole and the other side is an N pole. The magnets 3 are arranged so that the magnetic poles adjacent in the circumferential direction are alternately reversed, that is, N, S, N, S,.

  The magnet 3 of one rotor 2 and the magnet 3 of the other rotor 2 are arranged at the same position and in the same shape in the circumferential direction when viewed from the axial direction.

  FIG. 4 is a perspective view showing the stator 1 of FIG. As shown in FIG. 4, the stator 1 includes a plurality of stator cores (hereinafter simply referred to as cores 5) arranged at equal intervals along the circumferential direction, and a stator coil 10 arranged in a distributed winding shape. And a holding member 4 that holds the plurality of cores 5. The core 5 is formed by laminating an amorphous foil strip made of an amorphous metal or a magnetic thin plate such as a silicon steel plate, and has a rectangular parallelepiped shape.

  FIG. 5 is a perspective view showing a structure in which the core of the stator 1 is assembled to the holding member 4 (hereinafter referred to as a core holding structure 54), that is, a view showing a state in which the core 5 is assembled to the holding member 4. It is. FIG. 6 is a view for explaining a method of attaching the core 5 to the holding member 4 and shows a state where the core 5 and the holding member 4 are disassembled. In FIG. 6, the holding member 4 fixed to the center bracket 25 c of the housing 25 is partially shown. In FIG. 5, some of a plurality of coil restricting portions 104 </ b> A described later are shown as representatives, and in FIG. 6, the coil restricting portion 104 </ b> A is not shown.

  As shown in FIG. 5, the core 5 is held by the holding member 4, and the holding member 4 is fixed to the housing 25 as shown in FIG. 2. As shown in FIG. 6, the holding member 4 has a pair of holding plates 40. Since the pair of holding plates 40 have the same shape, the one holding plate 40 will be described as a representative. The holding plate 40 has an annular outer peripheral portion 41 and a clamping portion 42 extending from the outer peripheral portion 41 toward the rotating shaft 30. The holding plate 40 is attached to the center bracket 25c of the housing 25 by shrink fitting or press fitting, and the outer peripheral portion 41 of the holding plate 40 is fixed to the inner wall of the center bracket 25c. A plurality of the clamping portions 42 are provided at predetermined intervals along the circumferential direction. An opening 43 into which the core 5 is inserted is provided between a pair of sandwiching portions 42 adjacent in the circumferential direction.

  The pair of holding plates 40 are arranged to face each other with a predetermined interval. The opening 43 of one holding plate 40 and the opening 43 of the other holding plate 40 are arranged so as to coincide when viewed from the axial direction.

  The core 5 is attached to the opening 43 and is sandwiched between a pair of sandwiching portions 42 adjacent in the circumferential direction. The core 5 is disposed such that the magnetic thin plate is substantially orthogonal to the radial direction of the rotating shaft 30 (hereinafter also simply referred to as the radial direction).

  On each of the side surfaces orthogonal to the circumferential direction of the core 5 (hereinafter referred to as the circumferential side surface of the core 5), fitting convex portions 51 that are fitted into the gaps between the pair of holding plates 40 are formed. The fitting convex portion 51 extends in the radial direction at the axial central portion of the core 5.

  When attaching the core 5 to the opening 43, the core 5 is inserted radially outward from the center side of the center bracket 25 c as shown in the figure, and the radially outer surface of the core 5 is brought into contact with the outer peripheral portion 41. As a result, the core 5 is disposed on each of the holding member 4 in the axial direction on one side (hereinafter referred to as the upper side for convenience of explanation) and the axial direction other side of the holding member 4 (hereinafter referred to as the lower side for convenience of description). It is held in a state of protruding toward it. As shown in FIG. 5, the 48 cores 5 are held by the holding member 4, so that the slots 7 are formed by the circumferential side surfaces of the adjacent cores 5.

  The core 5 has a structure that is divided in half in the axial direction by the holding member 4, and the slot 7 formed by the adjacent core 5 is also divided in half in the axial direction by the holding member 4. 7 is formed.

  As shown in FIG. 4, the annular stator coil 10 is arranged in the slot 7 (see FIG. 5), whereby the disc-shaped stator 1 is configured. The stator coil 10 is made of a copper flat wire conductor (rectangular conductor) covered with an insulating coating such as enamel. The stator coil 10 has a plurality of single-phase coils 12.

  FIG. 7 is a schematic view showing a state in which the single-phase coil 12 is arranged with respect to the core holding structure 54. In each single-phase coil 12, four coil pieces 6 are arranged in the circumferential direction, and connection end portions 6a adjacent to each other on the outer diameter side (radial outer side of the cores 5 arranged in the circumferential direction) 1a in the single-phase coil 12; 6i (refer FIG. 9) is connected, and is exhibiting the annular | circular shape. As will be described later, a folded portion 6e (see FIG. 9) of the coil piece 6 is disposed on the inner diameter side (the radial inner side of the core 5 arranged in the circumferential direction) 1b in the single-phase coil 12.

  FIG. 8 is a diagram in which three coil pieces 6 are omitted from the four coil pieces 6 constituting the single-phase coil 12 of FIG. As shown in FIG. 8, the coil piece 6 is opened along the circumferential direction from the turn-up portion to the slot 7 on the inner diameter side 1b, and is also opened along the circumferential direction on the outer diameter side 1a. Yes.

  FIG. 9A is a schematic diagram showing the coil piece 6, and FIG. 9B is a schematic diagram showing a state in which two coil pieces 6 are connected. As shown in FIG. 9A, the coil piece 6 has a structure in which legs are opened in the circumferential direction on both sides starting from a folded portion 6e formed at the center. The folded portion 6e has a structure bent in the edgewise direction (long side direction of the rectangular wire) of the rectangular conductor. The sharp bending structure in the edgewise direction may destroy the insulating coating such as enamel during molding. For this reason, in this Embodiment, the folding | returning part 6e is shape | molded so that it may become a gentle bending structure which has an arc-shaped clearance gap inside, and destruction of an insulating film is prevented.

  Since the folded portion 6e has a bending structure in the edgewise direction, the folded portion 6e has high rigidity and is suitable for maintaining the molded shape of the coil piece 6 alone. Therefore, the connection work by welding of the connection ends 6a and 6i at both ends of the coil piece 6 is facilitated, and the work is also easy when the plurality of single-phase coils 12 are connected to manufacture the stator coil 10 in advance. It becomes. Furthermore, since the shape of the stator coil 10 after assembly is also maintained, the workability of assembling the stator coil 10 to the core holding structure 54 is good.

  The coil piece 6 is further bent from the inner diameter side open leg portions 6d and 6f that are opened in the circumferential direction from both sides of the folded portion 6e, and is bent from the inner diameter side open leg portions 6d and 6f to the slot 7 of the stator 1 on the inner diameter side. It has linear parts 6c and 6g arranged so as to pass from 1b to the outer diameter side 1a. The coil piece 6 has outer-diameter-side spread legs 6b and 6h that are opened in the circumferential direction on the outer-diameter side 1a from the straight portions 6c and 6g and continue to the connection ends 6a and 6i. From the outer diameter side opening leg portions 6b and 6h, the connecting end portions 6a and 6i are extended in the radial direction to form a linear shape.

  When the coil piece 6 is formed, the folded conductor of the folded portion 6e is greatly displaced in the axial direction. Therefore, it is necessary to correct this displacement. That is, the folded conductor passes through the slot 7, and the connection end 6i is connected to the connection end 6a of the other coil piece 6 on the outer diameter side 1a, so that each position becomes an appropriate position. It is necessary to correct the position. This correction is performed by bending in the axial direction at one of the inner diameter side open leg portions 6d and 6f between the folded portion 6e and the slot 7. In the present embodiment, bending is performed at the inner diameter side open leg portion 6f.

  The inner diameter side open leg portion 6f defines the positions of the straight portion 6g and the connecting end portion 6i in the axial direction. As a result, the straight line portion 6g is positioned in a layer close to the holding member 4 of the slot 7 (hereinafter referred to as an inner layer), and the connection end portion 6i is aligned with the connection end portion 6a of the other coil piece 6. Is set. The straight portion 6g of one coil piece 6 is located in the inner layer of the predetermined slot 7, and the straight portion 6c of the other coil piece 6 is a layer far from the holding member 4 of the same slot 7 (hereinafter referred to as an outer layer). ) (See FIG. 10). In the following description, coil conductors constituting the straight portions 6c and 6g arranged in the slot 7 are collectively referred to as an in-slot conductor 11.

  As shown in FIG. 9B, the coil piece 6 is positioned so that the position of the in-slot conductor 11 is set by the folded portion 6e, and the connecting end 6a and the connecting end 6i are aligned on the outer diameter side 1a. Is set.

  When connecting the connection end 6a of one coil piece 6 and the connection end 6i of another coil piece 6 by welding, it is necessary to align the side surfaces (short sides of the flat wire) of the flat wire conductors in the axial direction. There is. Accordingly, the lower end surface of the upper connection end 6a in the axial direction is shaped to be slightly below the upper end surface of the lower connection end 6i, and the connection ends 6a, 6i are axially formed. If they are in elastic contact with each other, they can be stably stacked and aligned. In addition, in order to ensure the connection area by welding more than a conductor cross-sectional area, the connection end part 6a and the connection end part 6i of the coil piece 6 are extended to linear shape only length L1 in radial direction. This linear end can be stably welded by chucking with another member.

  FIG. 10 is a schematic cross-sectional view of the stator 1, schematically showing a cross section taken along line XX of FIG. 8. In FIG. 10, the coil conductor and the coil restricting portion 104A arranged in one slot 7 are shown, and the coil conductor and the coil restricting portion 104A arranged in the other slot 7 are not shown. In the state where all the single-phase coils 12 are arranged (see FIG. 4), one slot includes two conductors of the coil piece 6 in the upper slot 7 and two conductors of the coil piece 6 in the lower slot 7. Four conductors are arranged per hit.

  The in-slot conductor 11 is such that the long side constituting the rectangular cross section of the in-slot conductor 11 is parallel to the axial direction, and the short side constituting the rectangular cross section of the in-slot conductor 11 is orthogonal to the axial direction. Arranged

With reference to FIG. 11, a method of mounting the stator coil 10 on the core holding structure 54 will be described.
-Coil assembly process-
A plurality of coil pieces 6 are arranged in the circumferential direction, and the connection end portions 6a, 6i adjacent on the outer diameter side 1a are connected to each other by welding or the like, and the single-phase coil 12 is assembled in advance. A plurality of single-phase coils 12 are connected side by side in the circumferential direction to form a U-phase winding, a V-phase winding, and a W-phase winding, and each phase winding is connected at a neutral point. Form. The stator coil 10 assembled in advance is arranged coaxially with respect to the core holding structure 54, and is sandwiched from above and below as indicated by arrows to produce the stator 1. The stator coil 10 is fixed to the holding member 4 with an adhesive or the like.

  As described above, since the shape of the coil piece 6 is good, the workability is good when assembling the stator coil 10 in advance, and when the assembled stator coil 10 is attached to the core holding structure 54. Also workability is good.

  According to such a manufacturing method, since the connection ends 6a and 6i of the coil piece 6 are arranged on the outer diameter side 1a, a jig (not shown) is used to join the connection ends 6a and 6i. A space for chucking can be easily secured, and a space for arranging the welding torch can also be easily secured. Therefore, the connection ends 6a and 6i at both ends of the coil piece 6 can be welded and fixed with high accuracy while being chucked by a jig, and the welded stator coil 10 can be assembled into the slot 7 with high accuracy. It is possible to improve the assembly efficiency and reduce the cost.

  Here, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-288074), between the adjacent cores, the stator coil is held by the entire circumferential side surface of the core, that is, the conductor is fitted into the slot. In the combined form, when the stator coil is mounted, there is a high possibility that the insulating coating of the coil is damaged by contact with the core.

  Therefore, in the present embodiment, the interval between the adjacent circumferential side surfaces of the adjacent cores 5, that is, the circumferential width of the slot 7 is made larger than the circumferential width of the in-slot conductor 11, so that the stator coil 10 is When the core holding structure 54 is mounted, the core 5 and the coil conductor are prevented from coming into contact with each other. The in-slot conductor 11 is positioned by the coil restricting portion 104A. As will be described later, the coil restricting portion 104A is configured to be in contact with a part of a side surface orthogonal to the circumferential direction of the in-slot conductor 11 (hereinafter referred to as a circumferential side surface of the in-slot conductor 11). The movement in the circumferential direction is restricted.

  The coil restricting portion 104A will be described with reference to FIGS. The coil restricting portion 104 </ b> A is provided on the holding member 4. The coil restricting portion 104 </ b> A provided on the upper holding plate 40 is provided so as to protrude upward along the axial direction from the sandwiching portion 42. The coil restricting portion 104 </ b> A provided on the lower holding plate 40 is provided so as to protrude downward along the axial direction from the sandwiching portion 42. The coil restricting portion 104A provided on the upper holding plate 40 and the coil restricting portion 104A provided on the lower holding plate 40 have the same configuration, and therefore represent the coil restricting portion 104A of the upper holding plate 40. explain.

  A pair of coil restricting portions 104 </ b> A is provided in each slot 7, and is arranged concentrically with the rotating shaft 30. The coil restricting portion 104A is provided so as to be in contact with the circumferential side surface of the core 5 that defines the slot 7 at substantially the center in the radial direction of the slot 7. The pair of coil restricting portions 104A in the slot 7 are arranged so as to sandwich the in-slot conductor 11 therebetween. In other words, the coil restricting portion 104 </ b> A is disposed between the core 5 and the stator coil 10. The coil restricting portion 104A and the in-slot conductor 11 may always be in contact with each other, or a slight gap may be formed. Even if a slight gap is formed, the movement of the stator coil 10 in the circumferential direction can be restricted by contact.

  As shown in FIG. 10, the axial dimension (protrusion dimension) of the coil restricting portion 104A is shorter than the long side dimension of the in-slot conductor 11, that is, the axial dimension. For this reason, the coil restricting portion 104A contacts the in-slot conductor 11 disposed in the inner layer, but does not contact the in-slot conductor 11 disposed in the outer layer.

  As described above, in the coil piece 6, one (6g) of the straight portions 6c and 6g arranged in the slot 7 is arranged in the inner layer, and the other (6c) is arranged in the outer layer. That is, since at least one of the linear portions 6c and 6g of the coil piece 6 is disposed between the pair of coil restricting portions 104A, the entire coil piece 6 or the single-phase coil 12 is restricted from moving in the circumferential direction. . Therefore, in FIG. 7, in order to restrict the position of one single-phase coil 12, a pair of coil restricting portions 104 </ b> A is provided in each of the eight slots 7, but at least one of the eight slots 7 is provided. The position of the single-phase coil 12 can be restricted by providing a pair of coil restricting portions 104 </ b> A in the slot 7.

According to the first embodiment described above, the following operational effects are obtained.
(1) The stator 1 has stator coils 10 in which cores 5 and slots 7 are alternately arranged in the circumferential direction and arranged in a distributed winding shape. A gap is provided between the stator coil 10 arranged in the slot 7, that is, the in-slot conductor 11, and the core 5. In the slot 7, a coil restricting portion 104 </ b> A that restricts the circumferential movement of the stator coil 10 by contacting a part of the circumferential side surface of the in-slot conductor 11 is provided. As a result, even when vibration or impact is applied to the rotating electrical machine 100, movement in the circumferential direction of the stator coil 10 is restricted, so that the stator coil 10 is fixed due to contact with the core 5. Damage to the insulating coating of the child coil 10 can be prevented, and the insulation reliability of the rotating electrical machine 100 can be improved.

(2) The circumferential dimension of the slot 7, that is, the circumferential dimension between the circumferential side surfaces of the adjacent cores 5 is longer than the circumferential dimension of the in-slot conductor 11, and the circumferential side surface of the in-slot conductor 11 and the core 5 A gap that is at least larger than the gap between the in-slot conductor 11 and the coil restricting portion 104A is formed between the circumferential side surfaces, and the core 5 and the in-slot conductor 11 are configured not to contact each other in the slot 7. Yes. For this reason, when the stator coil 10 is assembled to the core holding structure 54, the possibility that the insulating coating of the stator coil 10 is damaged due to the stator coil 10 coming into contact with the core 5 can be reduced. The insulation reliability of the electric machine 100 can be improved.

(3) The coil restricting portion 104 </ b> A is provided on the holding member 4 that is a component different from the core 5. For this reason, the insulating coating of the stator coil 10 is more effectively applied when the stator coil 10 is mounted by selecting the material of the holding member 4 so that the stator coil 10 is less likely to be damaged during contact. Damage can be prevented and the insulation reliability of the rotating electrical machine 100 can be improved. As the material of the holding member 4, a material softer than the core 5, an elastically deformable material having a lower elastic modulus than the core 5, or the like can be used.

(4) The single-phase coil 12 includes a plurality of coil pieces 6, and the plurality of coil pieces 6 are arranged in the circumferential direction to form an annular shape, and are adjacent on the outer diameter side 1 a of the annular single-phase coil 12. The connection ends 6a and 6i of the coil piece 6 are connected to each other to form an annular electric circuit. According to the present embodiment, since it is not necessary to connect the connection end on the inner diameter side 1b of the single-phase coil 12, the number of connection points can be reduced correspondingly, and the inner-diameter dimension of the single-phase coil 12 that exhibits an annular shape. The rotating electrical machine 100 can be reduced in size. Moreover, since connection work such as welding can be performed on the outer diameter side of the single-phase coil 12, workability is better than when connection work is performed on the inner diameter side of the single-phase coil 12.

The first embodiment can also be implemented with modifications as follows.
(Modification 1-1)
In the first embodiment, the example in which the in-slot conductors 11 arranged in the inner layer and the in-slot conductors 11 arranged in the outer layer are densely arranged has been described, but the present invention is limited to this. Not. As shown in FIG. 12, a predetermined gap may be provided between the in-slot conductor 11 arranged in the inner layer and the in-slot conductor 11 arranged in the outer layer. Thereby, when employ | adopting the cooling system which supplies a refrigerant | coolant to the slot 7, the contact area of a refrigerant | coolant and the conductor 11 in a slot can be increased, and a cooling performance can be aimed at. In addition, when vibration is applied to the rotating electrical machine 100, the insulating coating of the in-slot conductor 11 is caused by the frictional force between the in-slot conductor 11 arranged in the outer layer and the in-slot conductor 11 arranged in the inner layer. It can be prevented from being damaged.

(Modification 1-2)
In the first embodiment, the example in which the coil restricting portion 104A is provided so as to contact only the circumferential side surface of the in-slot conductor 11 arranged in the inner layer has been described, but the present invention is not limited to this. As shown in FIG. 13, the coil restricting portion 104B may be extended from the holding plate 40 to the outer layer. That is, in the present modification, the stator coil 10 is brought into contact with a part of each of the circumferential side surfaces of the in-slot conductor 11 disposed in the inner layer and the in-slot conductor 11 disposed in the outer layer by the coil restricting portion 104B. The movement in the circumferential direction can be restricted. As a result, the stator coil 10 can be held at a predetermined position more stably than in the first embodiment. Note that a coil restricting portion (not shown) may be formed so as to restrain only the in-slot conductor 11 arranged in the outer layer and not restrict the in-slot conductor 11 arranged in the inner layer.

(Modification 1-3)
In the first embodiment, an example in which a pair of coil restricting portions 104A are provided in each slot 7 has been described, but the present invention is not limited to this. As shown in FIG. 14, the coil restricting portion 104 </ b> A may be provided so as to contact only one of the circumferential side surfaces of the in-slot conductor 11. In this case, as shown in FIG. 15, at least two coil restricting portions 104A may be provided so as to restrict the single-phase coil 12 from moving in the circumferential direction. In this modification, one coil restricting portion 104A (the upper coil restricting portion 104A in the figure) of the two coil restricting portions 104A restricts one movement in the circumferential direction (moving counterclockwise in the figure). Of the two coil restricting portions 104A, the other coil restricting portion 104A (the lower coil restricting portion 104A in the figure) restricts the other movement in the circumferential direction (clockwise movement in the figure). Even in such a modification, the same operational effects as those of the first embodiment can be obtained.

  As another example, as shown in FIG. 16, one coil restricting portion 104 </ b> A is provided in at least one slot 7 and another slot 7 so as to restrict movement of one coil piece 6 in the circumferential direction. It is good also as a structure which provides one coil control part 104A in it. According to such a modification, since the number of coil restricting portions 104A can be reduced, the manufacturing cost of the holding member 4 can be reduced, and the cost of the rotating electrical machine 100 can be reduced.

(Modification 1-4)
In the first embodiment, the example in which the pair of coil restricting portions 104A is provided at the radial center of the slot 7 has been described, but the present invention is not limited to this. As shown in FIG. 17, the coil restricting portions 104I and 104O may be provided on the radially inner side of the slot 7 and on the radially outer side of the radial center. According to such a modification, the stator coil 10 can be held in a predetermined position more stably than in the first embodiment. Further, since the contact area between the core restricting portions 104I and 104O and the in-slot conductor 11 can be increased as compared with the first embodiment, the heat generated in the stator coil 10 is efficiently transmitted to the holding member 4. . For this reason, it is possible to improve the heat dissipation effect. Although not shown, the pair of coil restricting portions 104I may be provided only radially inward from the radial center of the slot 7, or the pair of coils only radially outward from the radial center of the slot 7. A restriction unit 104O may be provided.

  By restraining the in-slot conductor 11 in the vicinity of the radially inner end portion, even if vibration or impact is applied to the rotating electrical machine 100, the coil piece 6 has a gap between the straight portion 6c and the inner diameter side leg portion 6d. Can be effectively prevented from coming into contact with the radially inner end of the core 5, and the periphery thereof, the bent portion between the linear portion 6 g of the coil piece 6 and the inner diameter side open leg portion 6 f and the periphery thereof. . By restraining the in-slot conductor 11 in the vicinity of the radially outer end portion, even when vibration or impact is applied to the rotating electrical machine 100, the linear portion 6c of the coil piece 6 and the outer-diameter-side spread leg portion 6b. It is effective that the bent portion between the linear portion 6g of the coil piece 6 and the periphery thereof and the bent portion between the outer diameter side open leg portion 6h and the periphery thereof are in contact with the radially outer end portion of the core 5. Can be prevented. In particular, when the core 5 has a substantially rectangular parallelepiped shape, the gap between the core 5 and the in-slot conductor 11 is shorter at the radially inner end than at the radially outer end. For this reason, it is preferable to provide the coil restricting portion 104I at least inward in the radial direction from the radial center in the slot 7 and to restrain the in-slot conductor 11 in the vicinity of the radially inner end of the slot 7.

  As shown in FIG. 18, one coil restricting portion 104O is provided radially outward from the radial center of the slot 7, and one coil restricting portion 104I is radially inward from the radial center of the slot 7. May be provided.

(Modification 1-5)
The circumferential length of the coil restricting portion can be changed as appropriate. For example, as shown in FIG. 19, the coil restricting portion 104 </ b> L may be provided so as to extend from the radial center in the slot 7 toward the radial inner side and the radial outer side.

  By restraining the in-slot conductor 11 in the vicinity of the radially inner end portion, even if vibration or impact is applied to the rotating electrical machine 100, the coil piece 6 has a gap between the straight portion 6c and the inner diameter side leg portion 6d. It is effective that the bent portion and the periphery thereof, and the bent portion and the periphery thereof between the straight portion 6g of the coil piece 6 and the inner diameter side open leg portion 6f come into contact with the radially inner end portion of the core 5. Can be prevented. By restraining the in-slot conductor 11 in the vicinity of the radially outer end portion, even when vibration or impact is applied to the rotating electrical machine 100, the linear portion 6c of the coil piece 6 and the outer-diameter-side spread leg portion 6b. It is effective that the bent portion and the periphery thereof, and the bent portion and the periphery thereof between the straight portion 6g and the outer diameter side open leg portion 6h of the coil piece 6 are in contact with the radially outer end portion of the core 5. Can be prevented.

  According to such a modification, the stator coil 10 can be held in a predetermined position more stably than in the first embodiment. Further, since the contact area between the core restricting portion 104L and the in-slot conductor 11 can be increased as compared with the first embodiment, the heat generated in the stator coil 10 is efficiently transmitted to the holding member 4. For this reason, it is possible to improve the heat dissipation effect.

-Second Embodiment-
An axial gap type rotating electrical machine according to the second embodiment will be described with reference to FIG. FIG. 20 is a view similar to FIG. 10 and is a schematic cross-sectional view of the stator 1 applied to the axial gap type rotating electrical machine according to the second embodiment. In the figure, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, differences from the first embodiment will be described in detail.

  In the first embodiment, the coil restricting portion 104 </ b> A is provided on the holding member 4. On the other hand, in the second embodiment, the coil restricting portion 205 is provided in the core 5. The coil restricting portion 205 protrudes in the circumferential direction from the circumferential side surface of the core 5, that is, the side surface orthogonal to the circumferential direction in the core 5. The core 5 has a configuration in which magnetic thin plates are laminated. For this reason, the core 5 which has the coil control part 205 can be manufactured easily.

  The pair of coil restricting portions 205 is located at and around the boundary between the inner-slot conductor 11 on the inner layer and the inner-slot conductor 11 on the outer layer, and restricts the position of the inner-slot conductor 11 on the inner and outer layers. ing. In the slot 7, the top surface of the coil restricting portion 205, which is a convex portion, is in contact with the circumferential side surface of the in-slot conductor 11, and the circumferential side surface positioned in the vertical direction of the coil restricting portion 205 is not in contact with the in-slot conductor 11. It is said to be in contact.

  According to such 2nd Embodiment, there exists an effect similar to the effect of (1), (2) and (4) demonstrated in 1st Embodiment. Note that the second embodiment is also implemented by modifying the positions and number of the coil restricting portions 205 and the shape of the coil restricting portions 205, as in the above-described Modifications 1-1 to 1-5. Can do.

-Third embodiment-
An axial gap type rotating electrical machine according to the third embodiment will be described with reference to FIG. FIG. 21 is a view similar to FIG. 10 and is a schematic cross-sectional view of the stator 1 applied to the axial gap type rotating electrical machine according to the third embodiment. In the figure, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, differences from the first embodiment will be described in detail.

  In the first embodiment, the coil restricting portion 104 </ b> A is provided on the holding member 4. On the other hand, in the third embodiment, the coil restricting portion 309 is provided as a component different from the core 5 and the holding member 4. The coil restricting portion 309 has a wedge shape in which one end on the side close to the holding member 4 has a shorter circumferential dimension than the other end on the side far from the holding member 4. The coil restricting portion 309 is inserted between the circumferential side surface of the in-slot conductor 11 and the circumferential side surface of the core 5 in the slot 7 after the stator coil 10 is assembled to the core holding structure 54.

  According to such 3rd Embodiment, there exists an effect similar to 1st Embodiment. In the third embodiment, since the coil restricting portion 309 can be mounted after the stator coil 10 is assembled to the core holding structure 54, the stator coil 10 is fixed due to contact with the core 5. The possibility that the insulating coating of the child coil 10 is damaged can be further reduced.

  It is preferable to form the coil restricting portion 309 from a soft organic material because damage to the insulating coating of the stator coil 10 can be more effectively prevented.

  The third embodiment can also be implemented by modifying the position and number of the coil restricting portions 309 and the shape of the coil restricting portions 309 as in the above-described Modifications 1-1 to 1-5. .

-Fourth embodiment-
An axial gap type rotating electrical machine according to the fourth embodiment will be described with reference to FIGS. 22 and 23. FIG. 22 is a view similar to FIG. 10 and is a schematic cross-sectional view of the stator 1 applied to the axial gap type rotating electrical machine according to the fourth embodiment. FIG. 23 is a perspective view showing a coil piece 406 according to the fourth embodiment. In the figure, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, differences from the first embodiment will be described in detail.

  In the first embodiment, the long side constituting the rectangular cross section of the in-slot conductor 11 is parallel to the axial direction, and the short side constituting the rectangular cross section of the in-slot conductor 11 is orthogonal to the axial direction. Thus, the example in which the in-slot conductor 11 is disposed in the slot 7 has been described (see FIG. 10). On the other hand, in the fourth embodiment, as shown in FIG. 22, the short side constituting the rectangular cross section of the in-slot conductor 411 is parallel to the axial direction, and the rectangular in-slot conductor 411 is rectangular. The in-slot conductor 411 is disposed in the slot 7 so that the long side constituting the cross section is orthogonal to the axial direction.

  As shown in FIG. 23, the coil piece 406 used in the fourth embodiment has a structure in which the folded portion 406e is bent in the flatwise direction (the short-side direction of the rectangular wire) of the rectangular conductor. The bending structure in the flatwise direction can reduce the bending stress as compared with the bending structure in the edgewise direction, so that the insulation reliability of the coil conductor itself can be improved.

  The coil piece 406 is further bent from the inner diameter side open leg portions 406d and 406f that are opened in the circumferential direction from both sides of the folded portion 406e, and is bent from the inner diameter side open leg portions 406d and 406f to the slot 7 of the stator 1 on the inner diameter side. Straight portions 406c and 406g arranged to pass from 1b to the outer diameter side 1a. The coil piece 406 has outer-diameter-side spread legs 406b and 406h that are opened in the circumferential direction on the outer-diameter side 1a from the straight portions 406c and 406g and continue to the connection ends 406a and 406i. The connecting end portions 406a and 406i are extended in the radial direction from the outer diameter side open leg portions 406b and 406h to form a linear shape.

  By bending the inner diameter side open leg portion 406f, the axial positions of the straight portion 406g and the connecting end portion 406i are defined. As a result, the position is set so that the straight line portion 406 g is positioned in the inner layer of the slot 7 and the connection end portion 406 i is aligned with the connection end portion 406 a of the other coil piece 406. The straight portion 406 g of one coil piece 406 is located in the inner layer of the slot 7, and the straight portion 406 c of the other coil piece 406 is located in the outer layer of the slot 7. In this specification, coil conductors constituting the straight portions 406c and 406g arranged in the slot 7 are collectively referred to as an in-slot conductor 411.

  In the coil piece 406, the position of the in-slot conductor 411 is set by the folded portion 406e, and the position is set so that the connection end portions 406a and 406i are aligned on the outer diameter side 1a.

  According to such 4th Embodiment, there exists an effect similar to 1st Embodiment. Note that the fourth embodiment is also implemented by changing the position and number of the coil restricting portions 104A and the shape of the coil restricting portions 104A as in the above-described Modifications 1-1 to 1-5. Can do. Moreover, the coil control part demonstrated in 2nd and 3rd embodiment is also applicable.

  Note that the stator coil 10 can also be produced by combining the coil piece 406 described in the fourth embodiment and the coil piece 6 described in the first embodiment. For example, since a high voltage is applied to the coil piece directly connected to the power supply terminal connection (not shown) of each phase (U phase, V phase, W phase), it is directly connected to the power supply terminal connection. The coil piece 406 described in the fourth embodiment can be employed as the coil piece, and the coil piece 6 described in the first embodiment can be employed as the other coil piece.

  Among the plurality of annular single-phase coils, the coil piece 406 is used for the coil piece constituting the single-phase coil directly connected to the power supply terminal connection portion, and the coil piece 6 is used for the other single-phase coils. You can also

  Thus, by selecting and appropriately arranging coil pieces having different shapes, it is possible to improve the insulation reliability of the entire axial gap rotating electrical machine 100 while reducing the size of the axial gap rotating electrical machine 100. it can.

-Fifth embodiment-
An axial gap type rotating electrical machine according to the fifth embodiment will be described with reference to FIGS. 24 and 25. FIG. 24 is a view similar to FIG. 10 and is a schematic cross-sectional view of the stator 1 applied to the axial gap type rotating electric machine according to the fifth embodiment. FIG. 25 is a perspective view showing a coil piece 506 according to the fifth embodiment. In the figure, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, differences from the first embodiment will be described in detail.

  In the first embodiment, the long side constituting the rectangular cross section of the in-slot conductor 11 is parallel to the axial direction, and the short side constituting the rectangular cross section of the in-slot conductor 11 is orthogonal to the axial direction. Thus, the example in which the in-slot conductor 11 is disposed in the slot 7 has been described (see FIG. 10). In the fourth embodiment, the short sides constituting the rectangular cross section of the in-slot conductor 411 are parallel to the axial direction, and the long sides constituting the rectangular cross section of the in-slot conductor 411 are orthogonal to the axial direction. Thus, the example in which the in-slot conductor 411 is disposed in the slot 7 has been described (see FIG. 22).

  On the other hand, in the fifth embodiment, the in-slot conductor 511 arranged in the inner layer has a long side constituting the rectangular cross section of the in-slot conductor 511 so that the long side is orthogonal to the axial direction, and the inside of the slot It arrange | positions so that the short side which comprises the rectangular cross section of the conductor 511 may become parallel to an axial direction. Further, the in-slot conductor 511 disposed in the outer layer has a short side constituting the rectangular cross section of the in-slot conductor 511 such that the long side constituting the rectangular cross section of the in-slot conductor 511 is parallel to the axial direction. Is arranged so as to be orthogonal to the axial direction.

  As shown in FIG. 25, in the coil piece 506 used in the fifth embodiment, the folded portion 506e is bent in the edgewise direction (long side direction of the rectangular wire) of the rectangular conductor, and then the flatwise direction ( The structure is bent in the direction of the short side of the flat wire. Also in such a bending structure, since the bending stress can be reduced as compared with the bending structure in the edgewise direction, the insulation reliability of the coil conductor itself can be improved.

  In the coil piece 506, the bending direction is rotated 90 degrees at the top of the folded portion 506e. The coil piece 506 is further bent from the inner diameter side open leg portions 506d and 506f that are opened in the circumferential direction from both sides of the folded portion 506e, and is bent from the inner diameter side open leg portions 506d and 506f to the slot 7 of the stator 1 on the inner diameter side. And straight portions 506c and 506g arranged so as to pass from 1b to the outer diameter side 1a. The coil piece 506 has outer-diameter-side spread legs 506b and 506h that are opened in the circumferential direction on the outer-diameter side 1a from the straight portions 506c and 506g and continue to the connection ends 506a and 506i. The connecting end portions 506a and 506i are extended in the axial direction from the outer diameter side open leg portions 506b and 506h to form a linear shape.

  When each coil piece 506 is assembled to the core holding structure 54, the straight portion 506 g of one coil piece 506 is located in the inner layer of the slot 7, and the straight portion 506 c of the other coil piece 506 is placed in the outer layer of the slot 7. To position. In this specification, coil conductors constituting the straight portions 506c and 506g disposed in the slot 7 are collectively referred to as an in-slot conductor 511.

  In the coil piece 506, the position of the in-slot conductor 511 is set by the folded portion 506e, and the position is set so that the connection end portions 506a and 506i are aligned with each other on the outer diameter side 1a.

  According to such 5th Embodiment, there exists an effect similar to 1st Embodiment. Note that the fifth embodiment is also implemented by changing the position and number of the coil restricting portions 104A and the shape of the coil restricting portions 104A as in the above-described Modifications 1-1 to 1-5. Can do. Moreover, the coil control part demonstrated in 2nd and 3rd embodiment is also applicable.

  In addition, the stator coil 10 can also be produced by combining the coil piece 506 described in the fifth embodiment and the coil piece 6 described in the first embodiment. For example, since a high voltage is applied to the coil piece directly connected to the power supply terminal connection (not shown) of each phase (U phase, V phase, W phase), it is directly connected to the power supply terminal connection. The coil piece 506 described in the fifth embodiment can be used as the coil piece, and the coil piece 6 described in the first embodiment can be used as the other coil pieces.

  Among the plurality of annular single-phase coils, the coil piece 506 is used for the coil piece constituting the single-phase coil directly connected to the power supply terminal connection portion, and the coil piece 6 is used for the other single-phase coils. You can also

  Thus, by selecting and appropriately arranging coil pieces having different shapes, it is possible to improve the insulation reliability of the entire axial gap rotating electrical machine 100 while reducing the size of the axial gap rotating electrical machine 100. it can.

  The in-slot conductor 511 arranged in the inner layer is arranged so that the long side constituting the rectangular cross section of the in-slot conductor 511 is parallel to the axial direction, and the in-slot conductor 511 arranged in the outer layer is arranged in the slot. You may arrange | position so that the long side which comprises the rectangular cross section of the conductor 511 may be orthogonal to an axial direction.

The following modifications are also within the scope of the present invention, and one or a plurality of modifications can be combined with the above-described embodiment.
(Modification 2)
In the above-described embodiment, the example in which the connection ends 6a, 6i, 406a, 406i, 506a, and 506i of the plurality of coil pieces 6, 406 and 506 are connected to each other on the outer diameter side 1a has been described. Is not limited to this. The inner diameter side 1b may be connected, and the folded portion may be disposed on the outer diameter side 1a. It can also be set as the structure which connects connection edge parts in each of the internal diameter side 1b and the outer diameter side 1a.

(Modification 3)
The core 5 described above has a quadrangular cross-sectional shape, but the present invention is not limited to this, and the cross-sectional shape may be, for example, a trapezoid or a triangle.

(Modification 4)
The number of poles, the number of slots, and the winding method of the rotating electrical machine can be changed as appropriate.

(Modification 5)
In the above-described embodiment, the description has been given by taking the 2-rotor 1-stator type axial gap type rotating electrical machine as an example, but the present invention is not limited to this. The present invention can be applied to various axial gap type rotating electrical machines in which the rotor 2 and the stator 1 are arranged along the axial direction via a gap (axial gap). For example, the present invention can also be applied to a 1 rotor 1 stator type axial gap type rotating electrical machine.

(Modification 6)
The type of rotor is not limited to the above embodiment. For example, instead of the magnet 3, a switched reluctance motor (SR motor) including a rotor having salient poles may be employed.

(Modification 7)
In the above-described embodiment, an example in which a rectangular wire having a rectangular cross section is used for the stator coil 10 has been described. However, the present invention is not limited to this. For example, a round wire having a circular cross section may be used. When using a round wire, a coil control part is arrange | positioned so that a part of circumferential direction peripheral surface of the conductor in a slot may contact.

(Modification 8)
The rotating electrical machine 100 can also be used for other electric vehicles, for example, railway vehicles such as hybrid trains, passenger cars such as buses, cargo vehicles such as trucks, industrial vehicles such as battery-type forklift trucks, and the like. Moreover, it can utilize for not only a vehicle but the various motors and generators used for household appliances.

  As long as the characteristics of the present invention are not impaired, the present invention is not limited to the above-described embodiments, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention. .

  DESCRIPTION OF SYMBOLS 1 Stator, 1a Outer diameter side, 1b Inner diameter side, 2 Rotor, 2h Shaft hole, 3 Magnet, 4 Holding member, 5 Core, 6 Coil piece, 6a Connection end part, 6b Outer diameter side open leg part, 6c Linear part, 6d Inner diameter side open leg, 6e Folded back part, 6f Inner diameter side open leg part, 6h Outer diameter side open leg part, 6i Connection end, 7 slot, 10 Stator coil, 11 Slot inner conductor, 12 Single phase coil, 25 Housing, 25c Center bracket, 25f Front bracket, 25r Rear bracket, 30 Rotating shaft, 31 Bearing, 32 Structural material, 40 Holding plate, 41 Outer peripheral part, 42 Holding part, 43 Opening part, 51 Fitting convex part, 54 Core holding Structure, 100 rotating electrical machine, 104A, 104B, 104I, 104L, 104O, 205, 309 Coil regulating part, 406 Coil piece, 4 6a Connection end, 406b Outer diameter side leg opening, 406c Straight line part, 406d Inner diameter side opening leg part, 406e Folding part, 406f Inner diameter side opening leg part, 406i Connection end part, 411 In-slot conductor, 506 Coil piece, 506a Connection end portion, 506b Outer diameter side leg opening portion, 506c Straight line portion, 506d Inner diameter side opening leg portion, 506e Folding portion, 506i Connection end portion, 511 In-slot conductor

Claims (10)

A rotor fixed to the rotation axis;
A stator disposed through the rotor and a gap along the axial direction of the rotating shaft;
A housing for housing the rotor and the stator,
The stator includes a plurality of cores arranged along a circumferential direction of the rotation shaft, a stator coil, and a core holding member that holds the plurality of cores.
In the slot formed by the adjacent cores, there is a coil restricting portion that restricts the circumferential movement of the stator coil by contacting a part of the circumferential circumferential surface of the stator coil in the slot. Axial gap type rotating electrical machine provided. In the axial gap type rotating electrical machine according to claim 1,
A pair of the coil restricting portions is provided so as to sandwich the stator coil in at least one slot, or one axial gap type rotating electric machine is provided in at least one slot and one in another slot. In the axial gap type rotating electrical machine according to claim 2,
The stator coil has a plurality of coil pieces, and the plurality of coil pieces are arranged in a circumferential direction of the rotating shaft to form an annular shape and are adjacent to each other on the outer diameter side of the annular stator coil. An axial gap type rotating electrical machine in which the connecting ends of the pieces are connected. In the axial gap type rotating electrical machine according to claim 3,
The axial gap type rotating electrical machine in which the coil restricting portion is provided at least radially inward from the radial center of the rotating shaft in the slot. In the axial gap type rotating electrical machine according to claim 3,
The coil restricting portion is an axial gap type rotating electrical machine extending from a radial center of the rotating shaft in the slot toward a radially inner side and a radially outer side. In the axial gap type rotating electric machine according to any one of claims 1 to 5,
The said coil control part is an axial gap type rotary electric machine provided in components different from the said core. In the axial gap type rotating electrical machine according to claim 6,
The coil restricting portion is provided on the core holding member,
An axial gap type rotating electrical machine in which the coil restricting portion is disposed between the core and the stator coil. In the axial gap type rotating electrical machine according to claim 7,
The core holding member has an outer peripheral portion fixed to the inner wall of the housing, and a sandwiching portion that extends from the outer peripheral portion toward the rotating shaft and sandwiches the core.
The said coil control part is an axial gap type rotary electric machine which is a protrusion part which protruded in the axial direction of the said rotating shaft from the said clamping part. In the axial gap type rotating electric machine according to any one of claims 1 to 5,
The said coil control part is an axial gap type rotary electric machine which is a different part from the said core and the said core holding member. In the axial gap type rotating electric machine according to any one of claims 1 to 5,
The said coil control part is an axial gap type rotary electric machine which is a convex part which protrudes from the circumferential direction side surface of the said core.

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