WO2008132970A1

WO2008132970A1 - Insulator, stator of electric motor, and electric motor

Info

Publication number: WO2008132970A1
Application number: PCT/JP2008/056843
Authority: WO
Inventors: Kei Sasaki
Original assignee: Toyota Jidosha Kabushiki Kaisha
Priority date: 2007-04-12
Filing date: 2008-04-01
Publication date: 2008-11-06
Also published as: JP2008263719A

Abstract

Provided is an insulator (24), which is inserted and arranged in the outer circumference of a tooth portion radially protruding from an annular yoke portion. The insulator (24) has a plurality of faces confronting the tooth portion, and at least one of the faces has a protruding portion (36) to abut against the tooth portion. The protruding portion (36) is formed only partially of that face in a direction perpendicular to the fitting direction of the insulator (24).

Description

Description Insilleur, Stator of rotating electric machine, and rotating electric machine Technical Field

丰 The invention relates to instable overnight, the stator of a rotating electrical machine, and the technology of the rotating electrical machine

Background art

In general, a rotating electrical machine includes a stator and a rotor, and the rotor and the rotor interact electromagnetically to rotate the rotor and generate a driving force.

FIG. 15 is a partial schematic plan view showing the configuration of the stator used in the electric motor. As shown in FIG. 15, the stator 48 includes an annular yoke portion 50 and a stator core having a tooth portion 52 protruding in the radial direction of the yoke portion 50, a coil 54, and an insulator unit. 5 and 6.

FIG. 16 is a schematic perspective view showing an example of a configuration of a general insulative used for a stator. As shown in FIG. 16, the insulative evening 56 has a fitting hole 58, a storage portion 60, and a flange portion 62. A coil 54 having a predetermined number of windings is disposed in the housing 60. The tooth portion 52 is inserted into the insertion hole 58. The flange 6 2 is used to prevent the coil 5 4 from falling off the insulative overnight 56 6. When the stator 4 8 is manufactured, the dimensions of the plurality of teeth 52 are evenly aligned. Since this is difficult, a gap may be formed between the tooth portion 52 and the insertion hole 5 8 of the insula- tion 56. In such a case, when the stator 48 is manufactured, the insula- toy 56 is dropped or displaced from the teeth portion 52 due to vibration during operation of the rotating electric machine, and the coil 54 is disconnected, etc. There is a case.

Therefore, the other end of the same side facing the stator in the axial direction (arrow Y shown in FIG. 16) from the end of the side of the end of the insulator (end 56a shown in FIG. 16) The protruding part is provided over the end part 5 6 b) shown in the figure, and the protruding part is fitted into the groove part provided in the tooth part. Thus, there has been proposed a rotating electric machine that can fix the Insley evening to the teeth portion (see, for example, Japanese Patent Laid-Open Nos. 2000-14057 and 2001-136698).

In addition, a rotating electrical machine has been proposed in which an elastic part is provided on the side of the insulative evening so that the insulative is in elastic contact with the teeth part and the insulative evening can be fixed to the teeth part (for example, (See JP 2004-297986)

However, in the rotating electrical machines disclosed in Japanese Patent Application Laid-Open Nos. 2000-14057 and 2001-136698, it is difficult to control the size of the protruding portion of the insulator for fitting into the groove provided in the tooth portion. Even if the portion is fitted in the groove portion of the tooth portion, a gap is easily generated between the protruding portion and the groove portion. For this reason, the insular overnight cannot be sufficiently fixed to the teeth part, and an instable evening may occur. In addition, the protrusion of the insulative evening is provided from the end of the side of the insulative to the other end of the stator in the stacking direction. Excessive insertion load is applied, and the instable is easily deformed. As a result, the instable evening cannot be sufficiently fixed to the teeth section, and there may be an assembly night in the instability evening.

In addition, in the insular evening of JP-A-2004-297986, it is difficult to set the shape and dimensions of the elastic part provided in the insulative evening, so the insular evening cannot be sufficiently fixed to the teeth part, Assembling may occur during the evening. Disclosure of the invention

An object of the present invention is an insulative that can suppress the occurrence of an instable overnight assembly, a stator that includes the insulative, and a rotating electrical machine that includes the stator.

(1) The present invention is an insulative device that is fitted and disposed on an outer periphery of a tooth portion that protrudes in a radial direction from an annular yoke portion, and the insulative device includes a plurality of surfaces that face the tooth portion. Provided with at least one of the teeth on the surface A projecting portion that abuts is provided, and the projecting portion is provided only in a part of the surface in a direction perpendicular to the insulative insertion direction.

(2) In the insulative evening described in (1) above, it is preferable that a plurality of the protrusions are provided in a direction orthogonal to the insulative evening insertion direction.

(3) The present invention is a stator of a rotating electric machine including an insulative joint that is fitted and arranged on an outer periphery of a tooth part that protrudes in a radial direction from an annular yoke part, and A plurality of surfaces facing the portion, and at least any one surface is provided with a protruding portion that comes into contact with the teeth portion, and the protruding portion is arranged in a direction orthogonal to the insulative insertion direction, It can be installed only on a part of the surface.

(4) In the stator of the rotating electric machine according to (3), it is preferable that a plurality of the protrusions are provided in a direction orthogonal to the insertion direction of the insulator.

(5) The circumferential stator of the rotating electrical machine according to (3) or (4), wherein the projecting portion is one of a pair of surfaces facing the circumferential direction of the stator of the rotating electrical machine in the plane. It is preferable to be provided only in the part.

(6) The stator of the rotating electrical machine according to (5), wherein the protruding portion is provided at an axial end portion of the stator of the rotating electrical machine among the end portions of the pair of surfaces.

(7) In the stator for a rotating electrical machine according to any one of (3) to (6), it is preferable that the tooth portion includes a locking portion that locks the protruding portion.

(8) The rotating electrical machine stator according to any one of (3) to (7) above,

It is preferable to arrange a coil on the outer periphery of the insulative overnight.

(9) The present invention relates to a rotating electrical machine including a stator of a rotating electrical machine including an insulative joint that is fitted and arranged on an outer periphery of a tooth part that protrudes in a radial direction from an annular yoke part. A plurality of surfaces facing the teeth portion, and at least one of the surfaces is provided with a protruding portion that comes into contact with the teeth portion, and the protruding portion is a direction orthogonal to the insertion direction of the insulative overnight And provided only in a part of the plane.

(1 0) The rotating electrical machine according to (9), wherein the protrusion is insulative. It is preferable that a plurality are provided in a direction perpendicular to the fitting direction.

(11) The rotating electrical machine according to (9) or (10), wherein the protrusion is one of a pair of surfaces facing the circumferential direction of the stator of the rotating electrical machine in the surface. It is preferable to be provided only in the part.

(1 2) The rotating electrical machine according to (1 1), wherein the projecting portion is preferably provided at an axial end portion of the stator of the rotating electrical machine among the ends of the pair of surfaces.

(1 3) The rotating electrical machine according to any one of (9) to (1 2), wherein the tooth portion includes a locking portion that locks the protruding portion. Rotating electric machine.

(14) In the rotating electric machine according to any one of (9) to (13), it is preferable that a coil is disposed on the outer periphery of the above-mentioned hinge.

According to the present invention, the insulator is fitted and arranged on the outer periphery of the tooth portion protruding in the radial direction from the annular yoke portion, and the insulative evening includes a plurality of surfaces facing the teeth portion. A protrusion that abuts on the tooth portion is provided on at least one of the surfaces, and the protrusion is provided only in a part of the surface in a direction perpendicular to the fitting direction of the insulation. As a result, it is possible to provide an insulator that can suppress the occurrence of the assembly of the insulator evening, a stator that includes the insulator evening, and a rotating electrical machine that includes the stator. Brief Description of Drawings

FIG. 1 is a schematic diagram showing an example of the configuration of the rotating electrical machine according to the present embodiment.

FIG. 2 is a partial schematic plan view showing an example of the configuration of the stator according to the embodiment of the present invention.

FIG. 3 is a partial schematic perspective view showing an example of the configuration of the stator according to the embodiment of the present invention.

FIG. 4 is a schematic perspective view showing an example of the configuration of the Insley evening of this embodiment. Fig. 5 is a schematic cross-sectional view of the Insley evening cross section taken along line AA in Fig. 4. FIG. 6 is a schematic cross-sectional view of the cut-off cross-section taken along line BB in FIG. FIG. 7 is a schematic perspective view showing another example of the configuration of the insulation evening of the present embodiment.

FIG. 8 is a schematic cross-sectional view of the cut surface through the line BB in FIG. FIG. 9 is a schematic cross-sectional view of a stator of a cut surface passing through line AA shown in FIG. FIG. 10 is a partial schematic perspective view showing an example of the configuration of a stator according to another embodiment of the present invention.

FIG. 11 is a schematic perspective view showing an example of the configuration of an insulative evening according to another embodiment of the present invention.

Fig. 12 is a schematic cross-sectional view of the insulative section of the cross section taken along line AA in Fig. 11. .

Fig. 13 is a schematic cross-sectional view of the insulative section of the cross section taken along line BB in Fig. 11.

FIG. 14 is a schematic cross-sectional view of the insulator portion and the tooth portion showing a state before the tooth portion is inserted into the insulator overnight.

FIG. 15 is a partial schematic plan view showing the configuration of the stator used in the electric motor. FIG. 16 is a schematic perspective view showing an example of a configuration of a general insulative used for a stator. BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described below.

FIG. 1 is a schematic diagram showing an example of the configuration of the rotating electrical machine according to the present embodiment. The rotating motor is not particularly limited, such as pulse motors such as AC motor, SR motor, and single pole motor. As shown in FIG. 1, the rotating electrical machine 1 includes a stator (10), a rotor (12), a stator (10), and a frame (not shown) that accommodates the rotor (12). Is fixed inside the frame.

The rotor 1 2 includes a shaft 1 4 and a rotor core 1 6. As shown in FIG. 1, the rotor 12 has a rotor core 16 fixed around a shaft 14 disposed in the center. Further, the rotor 12 is inserted and disposed so as to have a predetermined gap between the rotor 12 and the stator 10. The rotor core 16 is provided with a plurality of permanent magnets (18 a, 18 b ′...). Further, the rotor core 16 is configured by laminating and integrating a plurality of electromagnetic steel plates punched by a pressing device. The shaft 14 is supported by a frame body via a bearing (not shown).

Next, the stator according to this embodiment will be described.

FIG. 2 is a partial schematic plan view showing an example of the configuration of the stator according to the embodiment of the present invention. FIG. 3 is a partial schematic perspective view showing an example of the configuration of the stator according to the embodiment of the present invention. As shown in FIGS. 2 and 3, the stator 10 includes a stator core 20, a coil 2 2, and an insular adapter 24.

The stator core 20 has an annular yoke portion 26 and teeth portions 28 (2 8 a, 2 8 b-... Shown in FIG. 1) protruding in the radial direction of the yoke portion 26.

FIG. 4 is a schematic perspective view showing an example of the configuration of the Insley evening of this embodiment. As shown in FIG. 4, the insular evening 24 has a fitting insertion hole 30, a housing part 32, a flange part 34, and a protruding part 36. A coil 2 2 (FIGS. 2 and 3) having a predetermined number of windings is disposed in the housing 3 2. In addition, the teeth portion 28 (FIGS. 2 and 3) is inserted into the insertion hole 30. The buttocks 3 4 are used to prevent the coil 2 2 from dropping out of the insular evening 2 4.

FIG. 5 is a schematic cross-sectional view of the insulative section of the cut surface passing through line AA in FIG. FIG. 6 is a schematic cross-sectional view of the insulative section of the cut surface passing through line BB in FIG. The protruding portion 36 is a tooth portion on at least one of the side surfaces of the teeth portion 24 on the tooth portion 28 side, that is, the side surfaces of the shoulder holes 24 on the fitting hole 30 side. It abuts against 28 and is provided only on a part of the side surface in the direction perpendicular to the direction in which the tooth portion 28 is inserted. Here, in the direction orthogonal to the direction in which the insulative 24 is inserted, the protrusion 36 is provided on the same side surface from the end of the side of the insulative 24. It is not provided over the other end, but is provided in a part between the end of the side surface and the other end of the same side surface. That is, for example, as shown in FIG. 5, when the protrusions 36 are provided on the side surface 38, the radial direction of the stator from the end portion 38a of the side surface 38 shown in FIG. Across the other end 3 8 b towards arrow Z) It is not provided across the other end portion 38 d from the end portion 38 c of the side surface 38 shown in FIG. 6 to the axial direction of the stator (arrow Y shown in FIG. 6). The shape or the like of the protruding portion 36 is not particularly limited.

Further, the protruding portion 36 is a side surface of the insulative portion 24 on the fitting insertion hole 30 side, and is a pair of facing side surfaces (for example, as shown in FIG. 5, the circumferential direction of the stator (FIG. 5 A pair of side surfaces 38 facing the arrow X) shown in FIG. 6 and a pair of side surfaces 40 0) facing the axial direction of the stator (arrow Y shown in FIG. 6) as shown in FIG. It is preferable that it is provided only in the part. In addition, a pair of side surfaces facing the circumferential direction of the stator (arrow X shown in FIG. 5) in terms of fixing to the locking portion (described later) of the teeth portion that can suppress the occurrence of the assembly cover. It is preferable to be provided only in a part of 3 8.

FIG. 7 is a schematic perspective view showing another example of the configuration of the insulation evening of the present embodiment. FIG. 8 is a schematic cross-sectional view of the insulative section of the cut surface passing through line BB in FIG. In the present embodiment, the protrusions 36 are a pair of side surfaces 38 facing the circumferential direction of the stator, and are axial end portions of the stator (a pair of facing surfaces facing the stator axial direction). It is provided on each of the side surfaces 40 (ends in contact with 40 c, 40 d). By adopting such a configuration, even if the coil 2 2 is arranged in the housing portion 32 of the insular evening 24, the deformation, inclination, etc. of the insuring evening 24 can be suppressed. By inserting the teeth part 28 into the insertion hole 30 of the insular evening 24, the insuring evening 24 is arranged on the outer periphery of the teeth part 28.

FIG. 9 is a schematic cross-sectional view of a stator of a cut surface passing through line AA shown in FIG. As shown in FIG. 9, the tooth portion 2 8 is provided with a locking portion 42 that locks the protruding portion 36 of the insular evening 24 when the insular evening 24 is disposed. ing. The locking part 4 2 locks the protrusion part 3 6 of the insular evening 24 to fix the insuring evening 24 to the tooth part 28, and the assembly part of the insuring evening 24 Can be suppressed. In addition, as described above, since the protruding portion 3 6 is provided on a part of the side surface of the insular evening 24, the contact area with the teeth portion 28 is small, and the teeth portion 28 is inserted. It is possible to reduce the fitting load applied to the instigation 24. Therefore, by providing the projecting portion 36 and the locking portion 4 2 of the present embodiment, the insulative portion 24 can be fixed, and the assembly guide Can be suppressed. If the assembly backlash can be suppressed, it is not necessary to secure a space that takes into account the backlash and downsizing of the mobile home is possible. The locking portion 42 is for locking the protruding portion 36 of the insular evening 24. Specifically, in a state where the teeth portion 28 is fitted and inserted into the insulture 24, a portion of the locking portion 42 is brought into contact with the radially inner surface of the stator of the protruding portion 36. To do. As a result, it is possible to easily manage the dimensions of the assembly position of Insule. Further, the position of the locking portion 42 is inside the stator in the radial direction (arrow Z in FIG. 9) from the protruding portion 3 6. provided on the insula 24. The protruding portion 3 6 It is provided at a position where it touches. The engaging part 42 and the projecting part 36 are provided on the tip side of the tooth part 28, so that the section where the insertion load of the tooth part is high can be shortened.

The distance L 3 between the top surfaces of the protruding portions 36 shown in FIG. 9 is preferably smaller than the width L 4 of the teeth portion 28 located on the radially inner side of the stator from the locking portion 42. As a result, when the projecting portion 3 6 is locked to the tooth portion 28, it becomes possible for an operator or the like to recognize the moderation feeling when the fitting load applied to the insulative 24 is released. , Insillere 2 4 can prevent assembly mistakes.

Next, an example of the structure of the stator which concerns on other embodiment of this invention is demonstrated.

FIG. 10 is a partial schematic perspective view showing an example of the configuration of a stator according to another embodiment of the present invention. As shown in FIG. 10, the stator 44 includes a stator core 20, a coil 22, and an insulator 46. In the stator 44 shown in FIG. 10, the same reference numerals are given to the same components as those of the stator 10 shown in FIG. FIG. 11 is a schematic oblique view showing an example of the configuration of an insulative evening according to another embodiment of the present invention. As shown in FIG. 11, the insulture 46 has a fitting insertion hole 30, a housing part 32, a flange part 34, and projecting parts 36 a and 36 b. The housing part 32, the fitting hole 30 and the flange part 34 are the same as described above.

Fig. 1 2 is a schematic cross-sectional view of the incision of the cut surface passing through line A—A in Fig. 11. Fig. 1 3 is an illustration of the insulative view of the cut surface passing through line B-B of Fig. 1 1. FIG. As shown in FIGS. 1 2 and 1 3, the protruding portions 3 6 a and 3 6 b are provided with protruding portions that abut against the teeth portion 28 on all sides of the insulator 46 on the tooth portion 28 side. However, it is provided only on a part of the side surface in the direction perpendicular to the insertion direction of the insulator 46. The part of the side surface here is as described above.

The protrusion of the present embodiment is such that at least one of the pair of opposing protrusions (36a, 36b) is locked by the locking portion of the tooth portion described above, The distance between the top surfaces of at least one of the pair of projecting portions (36a, 36b) facing each other is smaller than the thickness of the tooth portion. In the present embodiment, for example, the protruding portions 3 6 a provided on the pair of side surfaces 38 facing the circumferential direction of the stator shown in FIG. 12 (arrow X shown in FIG. 12) 3 6 a force of the teeth portion 28 It is locked by a locking portion 4 2 (see, for example, FIG. 9). In addition, the tops of the protrusions 36 b provided on the pair of side surfaces 40 (40 c, 40 d) facing the axial direction of the stator shown in FIG. 13 (arrow Y shown in FIG. 13). The distance between the surfaces is smaller than the thickness of the tooth portion 28 inserted. This will be described below as an example. However, the present invention is not limited to this, and the protrusions 3 6 a and 3 6 b may be reversed, and the protrusions 3 6 a and 3 6 b are both teeth 2. The distance between the top surfaces of any of the protrusions 3 6 a and 3 6 b may be smaller than the thickness of the teeth portion 28.

As described above, the projecting portions 3 6 a provided on the pair of side surfaces of the insulative facing the circumferential direction of the stator are provided on the teeth portion 28 as shown in FIG. 9, for example. It is locked by the locking portion 4 2.

FIG. 14 is a schematic cross-sectional view of the insulator portion and the tooth portion showing a state before the tooth portion is inserted into the insulator overnight. As shown in FIG. 14, the top surfaces of the protrusions 3 6 b provided on the pair of side surfaces 40 (40 c, 40 d) of the insular evening 46 facing the stator axial direction The distance L 1 between them is smaller than the thickness L 2 of the teeth portion 28 between the protruding portions 3 6 b. By making the distance L 1 between the top surfaces of the protruding portions 3 6 b smaller than the thickness L 2 of the teeth portion 2 8, a pressing force is applied to the teeth portion 2 8 (in this embodiment, the axial direction of the stator 10). To the teeth part (for example, the open laminated magnetic steel sheet), and in the insulture 46, the axial direction of the stator 10 (shown in Fig. 14) The assembly of arrow Y) can be suppressed. In addition, the protruding part 3 6 b is installed on a part of the side of Therefore, it is possible to reduce the insertion load applied to the insulator 46 when the teeth portion 28 is inserted. Therefore, by providing the protruding portions 36 a and 36 b and the locking portion 42 of the present embodiment, it is possible to suppress assembly. In addition, if the assemblage can be suppressed, it is not necessary to secure a space that takes into account the assemblage.

There are no particular limitations on the material that constitutes the insulative evening (and the protruding portion) as long as it is non-magnetic and insulating. For example, polybutylene terephthalate, polyphenylene sulfide, nylon, etc. Resin, etc. can be used, but resin selection, shape design, etc. are not particularly limited.

The coil 22 used in the present embodiment is wound with a normal winding (having a circular cross-sectional shape of the winding wire), a flat wire (having a square cross-sectional shape of the winding), and the like. Copper, etc. can be used as the material for normal windings and rectangular wires.

The stator core 20 used in the present embodiment is not particularly limited even if the annular yoke portion and the teeth portion are integrally formed, or even if the divided stator cores divided into a plurality are annularly arranged. is not. When the stator core is obtained by arranging the split stator core in a ring shape, it is obtained by providing a nonmagnetic ring on the outer peripheral surface of the yoke portion and shrink fitting.

The yoke part 26 and the tooth part 28 used in the present embodiment are not particularly limited as long as they are a laminated body in which electromagnetic steel sheets are laminated, a compact of a magnetic powder material, or the like. Examples of dust magnetic materials used in the present embodiment include pure Fe system, Fe-Si system, Fe-Co system, Fe-Cr system, and Fe-Cr-Ni system. And particles of Fe metal (alloy) such as Fe-Si-Al.

Further, the dust magnetic material may be one in which an insulating agent such as silicon resin or phenol resin is contained in the above-described particles or the like.

Next, the operation of the rotating electrical machine 1 according to the present embodiment will be described with reference to FIG. For example, when a current is passed through a coil (not shown) provided in the tooth portion 2 8 a of the stator 10, the magnetic flux enters the teeth portion 28 a from the permanent magnet 18 a closest to the teeth portion 28 a. Flows, and the permanent magnet 1 8 a is attracted to the tooth portion 2 8 a. In addition, by passing a current through a coil (not shown) of another tooth portion 28b, The permanent magnet 1 8 b closest to the tooth portion 2 8 b is attracted to the tooth portion 2 8 b. By performing this continuously, the rotor 12 rotates and torque is generated. As described above, the rotary electric machine 1 according to the present embodiment has been described with reference to FIG. 1. However, the configuration of the rotary electric machine is not limited to this, for example, an embedded type in which a permanent magnet is embedded in the rotor core. Even if there is a design change within a range not departing from the gist of the present invention, they are included in the present invention.

Claims

The scope of the claims

1. An insulator that is inserted and arranged on the outer periphery of a tooth portion protruding radially from an annular yoke portion,

The insulative evening has a plurality of surfaces facing the teeth part, and at least one surface is provided with a projecting part that comes into contact with the tooth part, and the projecting part is fitted to the insulative evening. An insulative evening characterized by being provided only in a part of the plane in a direction perpendicular to the insertion direction.

2. The insulator evening according to claim 1, wherein a plurality of the projecting portions are provided in a direction perpendicular to the fitting direction of the insulator.

3. A stator of a rotating electrical machine including an insulative joint fitted and arranged on an outer periphery of a tooth portion protruding in a radial direction from an annular yoke portion,

The insulative is provided with a plurality of surfaces facing the teeth part, and at least one of the surfaces is provided with a projecting part that comes into contact with the tooth part, and the projecting part is fitted to the insulative overnight. A stator for a rotating electrical machine, wherein the stator is provided only in a part of the surface in a direction orthogonal to the insertion direction.

4. The stator for a rotating electrical machine according to claim 3, wherein a plurality of the projecting portions are provided in a direction perpendicular to the insertion direction of the insulator.

5. The stator of the rotating electrical machine according to claim 3, wherein the protrusion is provided only on a part of a pair of surfaces facing the circumferential direction of the stator of the rotating electrical machine in the plane. A stator for a rotating electrical machine.

6. The stator of the rotating electric machine according to claim 5, wherein the protruding portion is provided at an axial end of the stator of the rotating electric machine among the ends of the pair of surfaces. The stator of a rotating machine.

7. The stator of the rotating electrical machine according to claim 3, wherein the teeth portion includes a locking portion that locks the protruding portion.

8. The stator of a rotating electrical machine according to claim 3, wherein a coil is disposed on an outer periphery of the insulative overnight.

9. A rotary electric machine including a stator of a rotary electric machine including an insulative joint fitted and arranged on an outer periphery of a tooth portion protruding in a radial direction from an annular yoke portion,

The insulative is provided with a plurality of surfaces facing the teeth part, and at least one of the surfaces is provided with a projecting part that comes into contact with the tooth part, and the projecting part is fitted to the insulative overnight. The rotating electrical machine is provided only in a part of the surface in a direction orthogonal to the insertion direction.

10. The rotating electrical machine according to claim 9, wherein a plurality of the projecting portions are provided in a direction orthogonal to the insulative insertion direction.

11. The rotating electrical machine according to claim 9, wherein the protrusion is provided only on a part of a pair of surfaces facing the circumferential direction of the stator of the rotating electrical machine in the plane. Rotating electric machine.

1 2. The rotating electrical machine according to claim 1, wherein the projecting portion is provided at an axial end of a stator of the rotating electrical machine among the ends of the pair of surfaces. Electric machine

13. The rotating electrical machine according to claim 9, wherein the tooth portion includes a locking portion that locks the protruding portion.

14. The rotating electrical machine according to claim 9, wherein a coil is disposed on an outer periphery of the insulative overnight.