Stator

Abstract

A stator (10) comprises: a stator core that has a plurality of radially extending tooth parts and a plurality of slots (28) formed between the plurality of tooth parts; an insulator that is mounted to the stator core; a plurality of coil winding parts (18) that are wound on the plurality of tooth parts with the insulator therebetween; and an insulating member (30) that has a plurality of insulating parts (32A, 32B) which are inserted into a plurality of selected slots among the plurality of slots and which provide insulation between adjacent coil winding parts among the plurality of coil winding parts, and a linking part (34) which links the plurality of insulating parts.

Description

Stator CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is based on and claims the benefit of priority from Japanese Patent Application No. 2024-032882, filed on March 5, 2024, the entire contents of which are incorporated herein by reference.

[0002] The technology of the present disclosure relates to a stator.

[0003] A known stator includes a stator core having a plurality of radially extending teeth and a plurality of slots formed between the teeth, an insulator attached to the stator core, and a plurality of windings wound around the teeth via the insulator. Some stators of this type have an insulating sheet inserted into the slots to insulate adjacent windings (see, for example, Japanese Patent Application Laid-Open No. 2008-042959). It is believed that this stator can ensure insulation between adjacent windings.

[0004] As a result of detailed investigation by the inventors, the following problem was discovered: When multiple insulating sheets, each having an independent structure, are inserted into each slot, the number of parts and the number of assembly steps increase, which may result in increased costs.

[0005] The technology disclosed herein provides a stator that can reduce costs compared to inserting multiple independent insulating sheets one by one into each slot.

[0006] The stator according to the disclosed technology comprises a stator core having a plurality of radially extending tooth portions and a plurality of slots formed between the tooth portions, an insulator attached to the stator core, a plurality of winding winding portions wound around the tooth portions via the insulator, and an insulating member inserted into selected slots of the slots and having a plurality of insulating portions that insulate adjacent winding winding portions of the winding winding portions, and a connecting portion that connects the insulating portions.

[0007] According to the technology of the present disclosure, a stator is provided that can reduce costs compared to when multiple insulating sheets, each having an independent structure, are inserted into each slot.

[0008] 13 is a plan view of a stator according to a reference example. FIG. 14 is a plan view of a stator according to the first embodiment. FIG. 15 is a development view showing the stator according to the first embodiment, linearly developed. FIG. 16 is an enlarged view of a main part of FIG. 3. FIG. 17 is a perspective view showing a state in which an insulating member is attached to a stator component according to the first embodiment. FIG. 18 is a perspective view of an insulating member according to the first embodiment. FIG. 19 is an explanatory view explaining how an insulating member is attached to a stator component according to the first embodiment. FIG. 19 is a plan view showing a state in which an insulating member is attached to a stator component according to the first embodiment. FIG. 19 is an enlarged perspective view of a main part of the stator according to the first embodiment. FIG. 19 is a development view showing a stator according to a second embodiment, linearly developed, and is an enlarged view of a main part showing a main part. FIG. 19 is a perspective view of an insulating member according to the second embodiment. FIG. 20 is an explanatory view explaining how an insulating member is attached to a stator component according to the second embodiment. FIG. 21 is a development view showing a stator according to a third embodiment, linearly developed. FIG. 22 is an enlarged view of a main part of FIG. 23. FIG. 24 is a perspective view showing a state in which an insulating member is attached to a stator component according to the third embodiment. FIG. 25 is a perspective view of an insulating member according to the third embodiment. FIG. 26 is an explanatory view explaining how an insulating member is attached to a stator component according to the third embodiment. FIG. 27 is a plan view of a stator according to a fourth embodiment. FIG. 10 is a development view showing a stator according to a fourth embodiment, developed linearly. FIG. 11 is a perspective view showing a state in which an insulating member is attached to a stator component according to the fourth embodiment. FIG. 12 is a perspective view of an insulating member according to the fourth embodiment. FIG. 13 is a plan view showing a state in which an insulating member is attached to a stator component according to the fourth embodiment. FIG. 14 is a plan view of a stator according to a first modified example of the fourth embodiment. FIG. 15 is a perspective view showing a state in which an insulating member is attached to a stator component according to the first modified example of the fourth embodiment. FIG. 16 is a perspective view of an insulating member according to the first modified example of the fourth embodiment. FIG. 17 is a plan view showing a state in which an insulating member is attached to a stator component according to the first modified example of the fourth embodiment. FIG. 18 is a perspective view showing a state in which an insulating member is attached to a stator component according to the second modified example of the fourth embodiment. FIG. 19 is a perspective view showing a state in which an insulating member is attached to a stator component according to the third modified example of the fourth embodiment. FIG. 19 is a perspective view of an insulating member according to the third modified example of the fourth embodiment. FIG. 19 is a plan view of a stator according to a fifth embodiment. FIG. 19 is a development view showing a stator according to the fifth embodiment, developed linearly.10. A perspective view of an insulating member according to the fifth embodiment. A plan view of an insulating member according to the fifth embodiment. A perspective view of an insulating member according to the sixth embodiment. A plan view of an insulating member according to the sixth embodiment. A plan view of a stator according to the seventh embodiment. A perspective view of an insulating member according to the seventh embodiment. A plan view of an insulating member according to the seventh embodiment. A plan view of a stator according to the eighth embodiment. A developed view showing a stator according to the eighth embodiment, linearly developed. A perspective view of an insulating member according to the eighth embodiment. A plan view of an insulating member according to the eighth embodiment. A plan view of a stator according to a first modified example of the eighth embodiment. A perspective view of an insulating member according to a first modified example of the eighth embodiment. A plan view of an insulating member according to a first modified example of the eighth embodiment. A perspective view of an insulating member according to a second modified example of the eighth embodiment. A plan view of an insulating member according to a second modified example of the eighth embodiment. A perspective view of an insulating member according to a third modified example of the eighth embodiment. A plan view of an insulating member according to a third modified example of the eighth embodiment. A developed view showing a stator according to the ninth embodiment, linearly developed. A perspective view of an insulating member according to the ninth embodiment. A plan view of an insulating member according to the ninth embodiment. A plan view of an insulating member according to the ninth embodiment. A developed view showing a stator according to the tenth embodiment, linearly developed. A perspective view of an insulating member according to the tenth embodiment. Fig. 13 is a plan view of a stator according to a tenth embodiment; Fig. 14 is a plan view of a stator according to an eleventh embodiment; Fig. 15 is a perspective view of an insulating member according to an eleventh embodiment; Fig. 16 is a plan view of an insulating member according to an eleventh embodiment;

[0009] [Reference Example] First, a stator according to a reference example that is the basis for the stators according to the first to eleventh embodiments of the technology of the present disclosure, which will be described later, will be described.

[0010] As shown in Fig. 1, the stator 10 includes a plurality of stator components 12. The stator 10 is configured by combining a plurality of stator components 12 in an annular shape. Fig. 1 shows the configuration of half of the stator 10. The stator 10 is applied to a brushless motor. Brushless motors may be used for any purpose. Examples of brushless motors include fan motors, pump drive motors, and compressor motors.

[0011] The X direction indicates the tangential direction of the stator 10, the Y direction indicates the radial direction of the stator 10, and the Z direction indicates the axial direction of the stator 10. In the following description, the circumferential direction of the stator 10 refers to the direction around the central axis of the stator 10. The tangential direction, radial direction, axial direction, and circumferential direction of the stator core 24, which will be described later, are the same directions as the tangential direction, radial direction, axial direction, and circumferential direction of the stator 10, respectively.

[0012] Each stator component 12 includes a core member 14, an insulator 16, and a winding winding portion 18. The core member 14 is formed in a T-shape in a plan view and has a core back portion 20 and teeth portions 22. The core back portion 20 extends in the circumferential direction of the stator core 24, and the teeth portions 22 extend from the center of the core back portion 20 toward the radially inward direction of the stator core 24. The tip portions of the teeth portions 22 are free ends, and the base ends of the teeth portions 22 are connected to the core back portion 20.

[0013] A stator core 24 is formed by combining a plurality of core members 14 in an annular shape. When the stator core 24 is formed, the plurality of core back portions 20 form an annular portion 26 that is the outer periphery of the stator core 24, and the plurality of teeth portions 22 extend radially from the center of the stator core 24. Slots 28 are formed between adjacent teeth portions 22.

[0014] The insulators 16 are attached to the core member 14. Specifically, the insulators 16 are attached to the tooth portions 22 so as to surround the tooth portions 22 in the Y direction. The insulators 16 are made of resin. Examples of resins that can be used to form the insulators 16 include polyimide, polyamide, polyphenylene sulfide (PPS), and polybutylene terephthalate (PBT). The resin that can be used to form the insulators 16 may be any resin.

[0015] The winding portion 18 is wound around the teeth 22 via the insulator 16. The winding portion 18 is formed by winding a wire around the teeth 22 in the radial direction of the stator core 24.

[0016] In the stator 10 configured as described above, when a high voltage is applied to the winding winding portions 18, insulating sheets may be inserted into the slots 28 to insulate adjacent winding winding portions 18. However, if multiple independent insulating sheets are inserted into each slot 28, the number of parts increases, resulting in increased costs. The stators 10 according to the first to tenth embodiments described below aim to reduce costs compared to when multiple independent insulating sheets are inserted into each slot 28.

[0017] In the following description, the arrow Z1 side indicates one axial side of the stator core 24, and the arrow Z2 side indicates the other axial side of the stator core 24.

[0018] First Embodiment Next, a stator 10 according to a first embodiment will be described.

[0019] 2 and 3, the stator 10 includes a plurality of insulating members 30. The insulating members 30 are attached to every other one of the stator components 12. Each insulating member 30 is attached to one of the stator components 12. Each insulating member 30 has the same configuration and is attached to the stator components 12 in the same orientation.

[0020] 4 to 6 , each insulating member 30 has a first insulating portion 32A, a second insulating portion 32B, and a connecting portion 34. The first insulating portion 32A and the second insulating portion 32B are examples of the “plurality of insulating portions” according to the technology of the present disclosure. Each insulating member 30 is formed, for example, from a sheet-like member made of insulating resin.

[0021] In each insulating member 30, the first insulating portion 32A is inserted into one of the plurality of slots 28, and the second insulating portion 32B is inserted into the slot 28 adjacent to the slot 28 into which the first insulating portion 32A is inserted. In the first embodiment, either the first insulating portion 32A or the second insulating portion 32B of each insulating member 30 is inserted into all of the plurality of slots 28. The slot 28 into which the first insulating portion 32A is inserted is an example of a "selection slot" and a "first selection slot" according to the technology of the present disclosure, and the slot 28 into which the second insulating portion 32B is inserted is an example of a "selection slot" and a "second selection slot" according to the technology of the present disclosure.

[0022] The first insulating portion 32A extends in the Y and Z directions. When inserted into the slot 28, the first insulating portion 32A is disposed between adjacent winding portions 18 and provides insulation between the adjacent winding portions 18. Similarly, the second insulating portion 32B extends in the Y and Z directions. When inserted into the slot 28, the first insulating portion 32A is disposed between adjacent winding portions 18 and provides insulation between the adjacent winding portions 18. The connecting portion 34 extends in the X and Y directions. The connecting portion 34 is disposed on the arrow Z1 side of the winding portion 18 and connects the ends of the first insulating portion 32A and the second insulating portion 32B on the arrow Z1 side.

[0023] 7 , the insulating member 30 is attached to the stator component 12 from the side indicated by arrow Z1. More specifically, the insulating member 30 is attached to the winding winding portion 18 of the stator component 12. When the insulating member 30 is attached to the winding winding portion 18, the first insulating portion 32A and the second insulating portion 32B are arranged along an axially extending portion of the winding winding portion 18 that extends in the Z direction, and the connecting portion 34 is arranged along a tangentially extending portion of the winding winding portion 18 that extends in the X direction. The insulating member 30 may be attached to the stator component 12 before the multiple stator components 12 are assembled in an annular shape, or may be attached to the stator component 12 after the multiple stator components 12 are assembled in an annular shape.

[0024] 8, the connecting portion 34 has a plurality of through holes 36 that penetrate in the Z direction. The number of the through holes 36 may be any number. Alternatively, the connecting portion 34 may have only one through hole 36.

[0025] As shown in FIG. 9 , the stator 10 has an insulator cover 38. The insulator cover 38 is disposed on the arrow Z1 side of the insulating member 30. The insulator cover 38 has a mating portion 40, and the insulator 16 has a mating portion 42. The insulator cover 38 is fixed to the insulator 16 by mating the mating portion 40 with the mating portion 42. The insulator cover 38 has a pressing portion 44. The pressing portion extends toward the insulating member 30 (i.e., the arrow Z2 side) along the Z direction and presses down on the insulating member 30. More specifically, the pressing portion 44 presses down on the connecting portion 34.

[0026] As described above in detail, the stator 10 according to the first embodiment includes the insulating member 30. The insulating member 30 includes a first insulating portion 32A that is inserted into one of the plurality of slots 28, a second insulating portion 32B that is inserted into the slot 28 adjacent to the slot 28 into which the first insulating portion 32A is inserted, and a connecting portion 34 that connects the first insulating portion 32A and the second insulating portion 32B. Therefore, compared to inserting a plurality of independent insulating sheets, one for each slot 28, the number of parts and the number of assembly steps can be reduced, resulting in cost reduction.

[0027] The connecting portion 34 connects the ends of the first insulating portion 32A and the second insulating portion 32B on the arrow Z1 side, so that the insulating portion 32A can be attached to the stator component 12 from the arrow Z1 side, improving workability during assembly.

[0028] In each insulating member 30, the first insulating portion 32A is inserted into one of the slots 28, and the second insulating portion 32B is inserted into the slot 28 adjacent to the slot 28 into which the first insulating portion 32A is inserted. Therefore, each insulating member 30 can be attached to every other one of the multiple stator components 12.

[0029] Furthermore, the connecting portion 34 is disposed on the side of the winding portion 18 indicated by the arrow Z1, and has a plurality of through holes 36 that penetrate in the Z direction. Therefore, even when cooling air flowing in the Z direction is supplied to the winding portion 18, the cooling air can pass through the plurality of through holes 36, and therefore, a decrease in the cooling performance for the winding portion 18 can be suppressed.

[0030] Second Embodiment Next, a stator 10 according to a second embodiment will be described.

[0031] In the second embodiment, the configuration of the insulating member 30 is modified as follows compared to the first embodiment. That is, as shown in Figures 10 and 11, the first insulating portion 32A has a first tip portion 52A located on the opposite side from the connecting portion 34, and a first extending portion 54A is formed at the first tip portion 52A. The first extending portion 54A is located on the arrow Z2 side of the winding portion 18 and extends toward the second insulating portion 32B.

[0032] Similarly, the second insulating portion 32B has a second tip portion 52B located on the opposite side from the connecting portion 34, and a second extending portion 54B is formed at the second tip portion 52B. The second extending portion 54B is located on the arrow Z2 side of the winding winding portion 18 and extends toward the first insulating portion 32A.

[0033] The first extending portion 54A and the second extending portion 54B have a plurality of through holes 56 that penetrate in the Z direction. The number of the through holes 56 may be any number. Alternatively, the first extending portion 54A and the second extending portion 54B may each have one through hole 56.

[0034] 12 , the insulating member 30 is assembled to the stator component 12 from the arrow Z1 side with the first extending portion 54A and the second extending portion 54B extending in the Z direction. The first extending portion 54A is then bent toward the second insulating portion 32B, and the second extending portion 54B is bent toward the first insulating portion 32A, thereby attaching the insulating member 30 to the stator component 12. The insulating member 30 may be attached to the stator component 12 before the multiple stator components 12 are assembled in an annular shape, or may be attached to the stator component 12 after the multiple stator components 12 are assembled in an annular shape.

[0035] As described above, in the second embodiment, the first insulating portion 32A has a first extending portion 54A formed at the first tip 52A thereof that extends toward the second insulating portion 32B, and the second insulating portion 32B has a second extending portion 54B formed at the second tip 52B thereof that extends toward the first insulating portion 32A. The first extending portion 54A and the second extending portion 54B are disposed on the arrow Z2 side relative to the winding winding portion 18. This prevents the insulating member 30 from coming off the stator component 12 in the direction of the arrow Z1.

[0036] Furthermore, the first extending portion 54A and the second extending portion 54B have a plurality of through holes 56 that penetrate in the Z direction. Therefore, even when cooling air flowing in the Z direction is supplied to the winding winding portion 18, the cooling air can pass through the plurality of through holes 56, and therefore, a decrease in the cooling performance for the winding winding portion 18 can be suppressed.

[0037] Third Embodiment Next, a stator 10 according to a third embodiment will be described.

[0038] 13 and 14 , in the third embodiment, a plurality of insulating members 130 are used instead of the plurality of insulating members 30 (see FIGS. 2 and 3 ) of the first embodiment. The plurality of insulating members 130 are attached to the plurality of stator components 12, every other one. Each insulating member 130 is attached to one stator component 12. Each insulating member 130 has the same configuration and is attached to the stator component 12 in the same orientation.

[0039] Each insulating member 130 has a first insulating portion 132A, a second insulating portion 132B, a first connecting portion 134A, and a second connecting portion 134B (see also FIGS. 15 and 16 ). The first insulating portion 132A and the second insulating portion 132B are an example of “multiple insulating portions” according to the technology of the present disclosure. The first connecting portion 134A and the second connecting portion 134B are an example of “connecting portion” according to the technology of the present disclosure. Each insulating member 130 is formed from a heat-shrinkable tube.

[0040] In each insulating member 130, the first insulating portion 132A is inserted into one slot 28 of the plurality of slots 28, and the second insulating portion 132B is inserted into the slot 28 of the plurality of slots 28 adjacent to the slot 28 into which the first insulating portion 132A is inserted. In the first embodiment, either the first insulating portion 132A or the second insulating portion 132B of each insulating member 130 is inserted into all of the plurality of slots 28. The slot 28 into which the first insulating portion 132A is inserted is an example of the "selection slot" and "first selection slot" according to the technology of the present disclosure, and the slot 28 into which the second insulating portion 132B is inserted is an example of the "selection slot" and "second selection slot" according to the technology of the present disclosure.

[0041] The first insulating portion 132A extends in the Y and Z directions. When inserted into the slot 28, the first insulating portion 132A is disposed between adjacent winding portions 18, providing insulation between the adjacent winding portions 18. Similarly, the second insulating portion 132B extends in the Y and Z directions. When inserted into the slot 28, the first insulating portion 132A is disposed between adjacent winding portions 18, providing insulation between the adjacent winding portions 18.

[0042] The first coupling portion 134A extends in the X and Y directions. The first coupling portion 134A is located on the arrow Z1 side of the winding portion 18 and couples together first ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z1 side. Similarly, the second coupling portion 134B extends in the X and Y directions. The second coupling portion 134B is located on the arrow Z2 side of the winding portion 18 and couples together second ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z2 side.

[0043] 17 , the insulating member 130 is attached to the stator component 12 from the tip end side of the tooth portion 22. More specifically, the insulating member 130 is attached to the outer periphery of the winding portion 18 of the stator component 12. When heat is applied to the insulating member 130 by a heater or the like, the insulating member 130 contracts and is attached to the outer periphery of the winding portion 18.

[0044] When the insulating member 130 is attached to the outer periphery of the winding portion 18, the first insulating portion 132A and the second insulating portion 132B are arranged along an axially extending portion that is a portion of the winding portion 18 that extends in the Z direction, and the first connecting portion 134A and the second connecting portion 134B are arranged along a tangentially extending portion that is a portion of the winding portion 18 that extends in the X direction. Each insulating member 130 may be attached to the stator components 12 before the multiple stator components 12 are assembled in an annular shape, or may be attached to the stator components 12 after the multiple stator components 12 are assembled in an annular shape.

[0045] The first connecting portion 134A and the second connecting portion 134B have a plurality of through holes 136 (see FIGS. 15 and 16 ) that penetrate in the Z direction. The number of the through holes 136 may be any number. Alternatively, the first connecting portion 134A and the second connecting portion 134B may each have one through hole 136.

[0046] As described above in detail, the stator 10 according to the third embodiment includes the insulating member 130. The insulating member 130 includes a first insulating portion 132A inserted into one of the slots 28, a second insulating portion 132B inserted into a slot 28 adjacent to the slot 28 into which the first insulating portion 132A is inserted, a first connecting portion 134A connecting first ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z1 side, and a second connecting portion 134B connecting second ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z2 side. Therefore, compared to inserting a plurality of independent insulating sheets one by one into each slot 28, the number of parts and assembly steps can be reduced, resulting in cost reduction.

[0047] Each insulating member 130 is formed of a heat-shrinkable tube, and therefore, for example, the insulating member 130 can be attached to the outer periphery of the winding portion 18 from the tip side of the tooth portion 22, and the insulating member 130 can be attached to the outer periphery of the winding portion 18 by applying heat to the insulating member 130 with a heater or the like to shrink the insulating member 130, thereby improving the workability during assembly.

[0048] Furthermore, the first connecting portion 134A is disposed on the side of the arrow Z1 relative to the winding winding portion 18, and has a plurality of through holes 136 that penetrate in the Z direction. Similarly, the second connecting portion 134B is disposed on the side of the arrow Z2 relative to the winding winding portion 18, and has a plurality of through holes 136 that penetrate in the Z direction. Therefore, even when cooling air flowing in the Z direction is supplied to the winding winding portion 18, the cooling air can pass through the plurality of through holes 136, and therefore, a decrease in the cooling performance for the winding winding portion 18 can be suppressed.

[0049] Fourth Embodiment Next, a stator 10 according to a fourth embodiment will be described.

[0050] 18 and 19 , the stator 10 according to the fourth embodiment has a 10-pole, 12-slot configuration with 10 magnetic poles and 12 slots 28. The multiple winding winding portions 18 include a U-phase winding winding portion 18, a V-phase winding winding portion 18, and a W-phase winding portion 18. The U-phase winding winding portion 18 includes a U+-phase winding winding portion 18 and a U-phase winding winding portion 18, the V-phase winding winding portion 18 includes a V+-phase winding winding portion 18 and a V-phase winding winding portion 18, and the W-phase winding winding portion 18 includes a W+-phase winding winding portion 18 and a W-phase winding winding portion 18.

[0051] The U+-phase winding portion 18, the V+-phase winding portion 18, and the W+-phase winding portion 18 are winding portions 18 wound in the forward direction. The U-phase winding portion 18, the V-phase winding portion 18, and the W-phase winding portion 18 are winding portions 18 wound in the reverse direction.

[0052] The multiple winding portions 18 are arranged in a clockwise direction in the following order: U+ phase winding portion 18, U- phase winding portion 18, W+ phase winding portion 18, W- phase winding portion 18, V+ phase winding portion 18, V- phase winding portion 18, U+ phase winding portion 18, U- phase winding portion 18, W+ phase winding portion 18, W- phase winding portion 18, V+ phase winding portion 18, and V- phase winding portion 18.

[0053] In the fourth embodiment, the configuration of the multiple insulating members 30 is modified as follows from the first embodiment. That is, the multiple insulating members 30 are attached to every other stator component 12. Each insulating member 30 is attached to two stator component members 12 (see also FIGS. 20 to 22 ). In each insulating member 30, the first insulating portion 32A is inserted into one of the multiple slots 28, and the second insulating portion 32B is inserted into the slot 28 adjacent to the slot 28 into which the first insulating portion 32A is inserted. The slot 28 into which the first insulating portion 32A is inserted is an example of the “selected slot” and “first selected slot” according to the technology disclosed herein, and the slot 28 into which the second insulating portion 32B is inserted is an example of the “selected slot” and “second selected slot” according to the technology disclosed herein.

[0054] More specifically, the plurality of insulating members 30 include a U-phase insulating member 30 attached across the U+ phase winding winding portion 18 and the U- phase winding winding portion 18, a V-phase insulating member 30 attached across the V+ phase winding winding portion 18 and the V- phase winding winding portion 18, and a W-phase insulating member 30 attached across the W+ phase winding winding portion 18 and the W- phase winding winding portion 18.

[0055] In the U-phase insulating member 30, the first insulating portion 32A is arranged between the U+ phase winding winding portion 18 and the V- phase winding winding portion 18, and the second insulating portion 32B is arranged between the U- phase winding winding portion 18 and the W+ phase winding winding portion 18.

[0056] In the V-phase insulating member 30, the first insulating portion 32A is arranged between the V+ phase winding winding portion 18 and the W- phase winding winding portion 18, and the second insulating portion 32B is arranged between the V- phase winding winding portion 18 and the U+ phase winding winding portion 18.

[0057] In the W-phase insulating member 30, the first insulating portion 32A is arranged between the W+ phase winding winding portion 18 and the U- phase winding winding portion 18, and the second insulating portion 32B is arranged between the W- phase winding winding portion 18 and the V+ phase winding winding portion 18.

[0058] In the fourth embodiment, neither the first insulating portion 32A nor the second insulating portion 32B is disposed between the winding winding portions 18 of the same phase. However, since the potential difference between the winding winding portions 18 of the same phase is smaller than the potential difference between the winding winding portions 18 of different phases, insulation is not required.

[0059] The connecting portion 34 has a plurality of through holes 36 penetrating in the Z direction, which is the same as in the first embodiment.

[0060] In this way, in the fourth embodiment, insulation between the winding portions 18 of the same phase is omitted, so costs can be reduced compared to when insulation is provided between the winding portions 18 of the same phase.

[0061] In the above description, the stator 10 has a 10-pole, 12-slot configuration with 10 magnetic poles and 12 slots 28, but as shown in Fig. 23, it may have an 8-pole, 9-slot configuration with 8 magnetic poles and 9 slots 28. Below, a modified example of the 8-pole, 9-slot configuration of the stator 10 will be described.

[0062] The U-phase winding portion 18 has a U+-phase winding portion 18, a U-phase winding portion 18, and a U+-phase winding portion 18, the V-phase winding portion 18 has a V+-phase winding portion 18, a V-phase winding portion 18, and a V+-phase winding portion 18, and the W-phase winding portion 18 has a W+-phase winding portion 18, a W-phase winding portion 18, and a W+-phase winding portion 18.

[0063] The multiple winding portions 18 are arranged in a clockwise direction in the following order: U+ phase winding portion 18, U- phase winding portion 18, U+ phase winding portion 18, W+ phase winding portion 18, W- phase winding portion 18, W+ phase winding portion 18, V+ phase winding portion 18, V- phase winding portion 18, and V+ phase winding portion 18.

[0064] Each insulating member 30 is attached to three stator components 12 (see also FIGS. 24 to 26 ). In each insulating member 30, the first insulating portion 32A is inserted into one of the slots 28, and the second insulating portion 32B is inserted into the slot 28 three slots away from the slot 28 into which the first insulating portion 32A is inserted.

[0065] The plurality of insulating members 30 include a U-phase insulating member 30 attached across the U+ phase winding portion 18, the U- phase winding portion 18, and the U+ phase winding portion 18, a V-phase insulating member 30 attached across the V+ phase winding portion 18, the V- phase winding portion 18, and the V+ phase winding portion 18, and a W-phase insulating member 30 attached across the W+ phase winding portion 18, the W- phase winding portion 18, and the W+ phase winding portion 18.

[0066] In the U-phase insulating member 30, the first insulating portion 32A is arranged between the U+ phase winding winding portion 18 and the V+ phase winding winding portion 18, and the second insulating portion 32B is arranged between the U+ phase winding winding portion 18 and the W+ phase winding winding portion 18.

[0067] In the V-phase insulating member 30, the first insulating portion 32A is arranged between the V+ phase winding portion 18 and the W+ phase winding portion 18, and the second insulating portion 32B is arranged between the V+ phase winding portion 18 and the U+ phase winding portion 18.

[0068] In the W-phase insulating member 30, the first insulating portion 32A is inserted into the slot 28 located between the W+ phase winding portion 18 and the U+ phase winding portion 18, and the second insulating portion 32B is arranged among the multiple slots 28, between the W+ phase winding portion 18 and the V+ phase winding portion 18.

[0069] In this modified example, neither the first insulating portion 32A nor the second insulating portion 32B is disposed between the winding winding portions 18 of the same phase. However, since the potential difference between the winding winding portions 18 of the same phase is smaller than the potential difference between the winding winding portions 18 of different phases, insulation is not required.

[0070] In this way, in this modified example, insulation between the winding portions 18 of the same phase is omitted, so costs can be reduced compared to when insulation is provided between the winding portions 18 of the same phase.

[0071] 27 and 28 , similarly to the second embodiment, a first extending portion 54A extending toward the second insulating portion 32B may be formed at the first tip end 52A of the first insulating portion 32A, and a second extending portion 54B extending toward the first insulating portion 32A may be formed at the second tip end 52B of the second insulating portion 32B. With this configuration, it is possible to prevent the insulating member 30 from coming off in the direction of arrow Z1 with respect to the stator component 12.

[0072] Furthermore, as shown in Figures 29 and 30, in the fourth embodiment, each insulating member 30 may be replaced with an insulating member 130, which is a heat-shrinkable tube having heat shrinkability as described in the third embodiment.

[0073] Fifth Embodiment Next, a stator 10 according to a fifth embodiment will be described.

[0074] 31 and 32 , in the fifth embodiment, a single insulating member 230 is used instead of the multiple insulating members 30 (see FIGS. 2 and 3 ) of the first embodiment. The insulating member 230 has multiple insulating portions 232 and a connecting portion 234 (see also FIGS. 33 and 34 ). The insulating member 230 is formed, for example, from a sheet-like member made of insulating resin.

[0075] The number of insulating portions 232 is the same as the number of slots 28, and one insulating portion 232 is inserted into each slot 28. A slot 28 into which multiple insulating portions 232 are inserted is an example of a "selective slot" according to the technology of the present disclosure. Each insulating portion 232 extends in the Y direction and the Z direction. When inserted into a slot 28, each insulating portion 232 is disposed between adjacent winding winding portions 18, providing insulation between the adjacent winding winding portions 18. The connecting portion 234 is formed in a ring shape along the circumferential direction of the stator core 24. The connecting portion 234 is disposed on the arrow Z1 side relative to the multiple winding winding portions 18, and connects the ends of the multiple insulating portions 232 on the arrow Z1 side.

[0076] The insulating member 230 is attached to the stator components 12 from the arrow Z1 side after the stator components 12 are combined in an annular shape. When the insulating member 230 is attached to the stator components 12, each insulating portion 232 is arranged along an axially extending portion of the winding winding portion 18 that extends in the Z direction, and the connecting portion 234 is arranged along a tangentially extending portion of the winding winding portion 18 that extends in the X direction.

[0077] The connecting portion 234 has a plurality of through holes 236 penetrating in the Z direction, which is the same as in the first embodiment.

[0078] As described above, in the fifth embodiment, the connecting portion 234 is formed in a ring shape, and the plurality of insulating portions and the connecting portion 234 constitute one insulating member 230. Therefore, compared to the case where a plurality of insulating members 30 are used, the number of parts and the number of assembly steps can be reduced, leading to cost reduction.

[0079] Sixth Embodiment Next, a stator 10 according to a sixth embodiment will be described.

[0080] In the sixth embodiment, the configuration of the insulating member 230 is changed as follows compared to the fifth embodiment. That is, as shown in Figures 35 and 36, each insulating portion 232 is bent into a V shape when viewed from the Z direction. Each insulating portion 232 is bent into a V shape over its entire length in the Z direction.

[0081] As described above, in the sixth embodiment, each insulating portion 232 is bent in a V-shape when viewed from the Z direction. Therefore, the double-layered structure of each insulating portion 232 increases the rigidity of each insulating portion 232, and therefore, when the insulating member 230 is attached to a plurality of stator components 12 from the arrow Z1 side, each insulating portion 232 can be prevented from breaking or deforming. Furthermore, the double-layered structure of each insulating portion 232 increases the thickness of each insulating portion 232, thereby improving insulation properties.

[0082] Seventh Embodiment Next, a stator 10 according to a seventh embodiment will be described.

[0083] In the seventh embodiment, the configuration of the insulating member 230 is changed as follows compared to the sixth embodiment. That is, as shown in Figures 37 to 39 , the connecting portion 234 is formed in a cylindrical shape along the circumferential direction of the stator core 24 and is disposed radially inward of the stator core 24. Each insulating portion 232 extends radially outward from the connecting portion 234 of the stator core 24.

[0084] In the seventh embodiment, each insulating portion 232 is also bent into a V shape when viewed from the Z direction. Each insulating portion 232 is bent into a V shape over the entire length in the Z direction.

[0085] As described above, in the seventh embodiment, the connecting portion 234 is formed in a cylindrical shape along the circumferential direction of the stator core 24 and is disposed radially inward of the stator core 24. Furthermore, each insulating portion 232 extends from the connecting portion 234 radially outward of the stator core 24. Therefore, the axial length of the stator 10 can be shortened compared to when the connecting portion 234 is disposed on one axial side of the stator 10.

[0086] Also in the seventh embodiment, each insulating portion 232 is bent in a V-shape when viewed from the Z direction. Therefore, the double structure of each insulating portion 232 increases the rigidity of each insulating portion 232, and therefore, when the insulating member 230 is attached to a plurality of stator components 12 from the arrow Z1 side, each insulating portion 232 can be prevented from breaking or deforming. Furthermore, the double structure of each insulating portion 232 increases the thickness of each insulating portion 232, thereby improving insulation properties.

[0087] Eighth Embodiment Next, a stator 10 according to an eighth embodiment will be described.

[0088] As shown in Figures 40 and 41 , the stator 10 according to the eighth embodiment has a 10-pole, 12-slot configuration, with ten magnetic poles and twelve slots 28, similar to the fourth embodiment. The eighth embodiment differs from the fourth embodiment in that a single insulating member 230 is used instead of the multiple insulating members 30 (see Figures 18 and 19 ). The insulating member 230 has multiple insulating portions 232 and a connecting portion 234 (see also Figures 42 and 43 ). The insulating member 230 is formed, for example, from a sheet-like member made of insulating resin.

[0089] The number of insulating portions 232 is half the number of slots 28, and each insulating portion 232 is inserted into half of the slots 28, one for each. A slot 28 into which multiple insulating portions 232 are inserted is an example of a "selective slot" according to the technology of the present disclosure. Each insulating portion 232 extends in the Y direction and the Z direction. When inserted into a slot 28, each insulating portion 232 is disposed between adjacent winding winding portions 18, providing insulation between the adjacent winding winding portions 18. The connecting portion 234 is formed in a ring shape along the circumferential direction of the stator core 24. The connecting portion 234 is disposed on the arrow Z1 side relative to the multiple winding winding portions 18, and connects the ends of the multiple insulating portions 232 on the arrow Z1 side.

[0090] The insulating member 230 is attached to the stator components 12 from the arrow Z1 side after the stator components 12 are combined in an annular shape. When the insulating member 230 is attached to the stator components 12, each insulating portion 232 is arranged along an axially extending portion of the winding winding portion 18 that extends in the Z direction, and the connecting portion 234 is arranged along a tangentially extending portion of the winding winding portion 18 that extends in the X direction.

[0091] The connecting portion 234 has a plurality of through holes 236 penetrating in the Z direction, which is the same as in the first embodiment.

[0092] More specifically, the multiple insulating portions 232 are respectively arranged between the U+ phase winding portion 18 and the V- phase winding portion 18, between the U- phase winding portion 18 and the W+ phase winding portion 18, between the V+ phase winding portion 18 and the W- phase winding portion 18, between the V- phase winding portion 18 and the U+ phase winding portion 18, between the W+ phase winding portion 18 and the U- phase winding portion 18, and between the W- phase winding portion 18 and the V+ phase winding portion 18.

[0093] In the eighth embodiment, no insulating portion is disposed between the winding winding portions 18 of the same phase. However, since the potential difference between the winding winding portions 18 of the same phase is smaller than the potential difference between the winding winding portions 18 of different phases, insulation is not required.

[0094] The connecting portion 234 has a plurality of through holes 236 penetrating in the Z direction, which is the same as in the first embodiment.

[0095] In this way, in the eighth embodiment, insulation between the winding portions 18 of the same phase is omitted, which allows for cost reduction compared to when insulation is provided between the winding portions 18 of the same phase.

[0096] Furthermore, the connecting portion 234 is formed in a ring shape, and the insulating portions 232 and the connecting portion 234 constitute one insulating member 230. Therefore, compared to when a plurality of insulating members 30 are used, the number of parts and the number of assembly steps can be reduced, resulting in cost reduction.

[0097] In the above description, the stator 10 has a 10-pole, 12-slot configuration with 10 magnetic poles and 12 slots 28, but as shown in Fig. 44, it may have an 8-pole, 9-slot configuration with 8 magnetic poles and 9 slots 28. A plurality of insulating parts 232 (see also Figs. 45 and 46) may be arranged between the U+-phase winding portion 18 and the V+-phase winding portion 18, between the U+-phase winding portion 18 and the W+-phase winding portion 18, and between the V+-phase winding portion 18 and the W+-phase winding portion 18, respectively.

[0098] In this modified example, no insulating portion 232 is disposed between the winding winding portions 18 of the same phase. However, since the potential difference between the winding winding portions 18 of the same phase is smaller than the potential difference between the winding winding portions 18 of different phases, insulation is not required.

[0099] In this way, in this modified example, insulation between the winding portions 18 of the same phase is omitted, so costs can be reduced compared to when insulation is provided between the winding portions 18 of the same phase.

[0100] 47 and 48, each insulating portion 232 may be bent into a V shape when viewed from the Z direction. Also, each insulating portion 232 may be bent into a V shape over the entire length in the Z direction.

[0101] When each insulating portion 232 is bent in a V-shape when viewed from the Z direction, the double-layered structure of each insulating portion 232 increases the rigidity of each insulating portion 232, thereby preventing each insulating portion 232 from breaking or deforming when the insulating member 230 is attached to a plurality of stator components 12 from the arrow Z1 side. Furthermore, the double-layered structure of each insulating portion 232 increases the thickness of each insulating portion 232, thereby improving insulation properties.

[0102] 49 and 50 , the connecting portion 234 may be formed in a cylindrical shape along the circumferential direction of the stator core 24 (see FIG. 37 , etc.) and disposed radially inward of the stator core 24. Furthermore, each insulating portion 232 may extend radially outward from the connecting portion 234 of the stator core 24. Furthermore, each insulating portion 232 may be bent in a V-shape when viewed from the Z direction. Furthermore, each insulating portion 232 may be bent in a V-shape over its entire length in the Z direction.

[0103] In this way, when the connecting portion 234 is formed in a cylindrical shape along the circumferential direction of the stator core 24 and is positioned radially inward of the stator core 24, and each insulating portion 232 extends from the connecting portion 234 radially outward of the stator core 24, the axial length of the stator 10 can be shortened compared to when the connecting portion 234 is positioned on one axial side of the stator 10.

[0104] Furthermore, each insulating portion 232 is bent in a V-shape when viewed from the Z direction. Therefore, the double structure of each insulating portion 232 increases the rigidity of each insulating portion 232, and therefore, when the insulating member 230 is attached to a plurality of stator components 12 from the arrow Z1 side, each insulating portion 232 can be prevented from breaking or deforming. Furthermore, the double structure of each insulating portion 232 increases the thickness of each insulating portion 232, thereby improving insulation properties.

[0105] Ninth Embodiment Next, a stator 10 according to a ninth embodiment will be described.

[0106] As shown in Figure 51 , in the ninth embodiment, a single insulating member 330 is used instead of the multiple insulating members 30 (see Figures 2 and 3 ) of the first embodiment. The insulating member 330 has multiple first insulating portions 332A, multiple second insulating portions 332B, multiple first connecting portions 334A, and multiple second connecting portions 334B (see also Figures 52 and 53 ). The first insulating portion 332A and the second insulating portion 332B are an example of the "multiple insulating portions" according to the technology of the present disclosure. The first connecting portion 334A and the second connecting portion 334B are an example of the "connecting portion" according to the technology of the present disclosure.

[0107] The insulating member 330 has a configuration in which a first insulating portion 332A, a second insulating portion 332B, a first connecting portion 334A, and a second connecting portion 334B are repeatedly arranged in succession in this order. The insulating member 330 is formed, for example, from a sheet-like member made of insulating resin.

[0108] The total number of the first insulating portions 332A and the second insulating portions 332B is the same as the number of the slots 28, and the first insulating portions 332A and the second insulating portions 332B are alternately inserted one by one into each slot 28. In other words, each first insulating portion 332A is inserted into one slot 28 of the multiple slots 28, and each second insulating portion 332B is inserted into a slot 28 adjacent to the slot 28 into which the first insulating portion 332A is inserted. The slot 28 into which the first insulating portion 332A is inserted is an example of the "selection slot" and "first selection slot" according to the technology of the present disclosure, and the slot 28 into which the second insulating portion 332B is inserted is an example of the "selection slot" and "second selection slot" according to the technology of the present disclosure.

[0109] The first insulating portion 332A extends in the Y and Z directions. When inserted into the slot 28, the first insulating portion 332A is disposed between adjacent winding portions 18, providing insulation between the adjacent winding portions 18. Similarly, the second insulating portion 332B extends in the Y and Z directions. When inserted into the slot 28, the first insulating portion 332A is disposed between adjacent winding portions 18, providing insulation between the adjacent winding portions 18.

[0110] The first coupling portion 334A extends in the X and Y directions. The first coupling portion 334A is located on the arrow Z1 side of the winding portion 18 and couples the end of the first insulating portion 332A on the arrow Z1 side to the end of the second insulating portion 332B adjacent to one side of the first insulating portion 332A on the arrow Z1 side. The second coupling portion 334B extends in the X and Y directions. The second coupling portion 334B is located on the arrow Z2 side of the winding portion 18 and couples the end of the first insulating portion 332A on the arrow Z2 side to the end of the second insulating portion 332B adjacent to the other side of the first insulating portion 332A on the arrow Z2 side.

[0111] The insulating member 330 is attached to the stator components 12 from the tip end side of the tooth portion 22 when the stator components 12 are arranged in a straight line. The stator components 12 are formed into an annular shape after the insulating member 330 is attached. The insulators 16 (see FIG. 1 ) of adjacent stator components 12 may be connected to each other. When the insulating member 330 is attached to the stator components 12, the first insulating portion 332A and the second insulating portion 332B are arranged along an axially extending portion of the winding winding portion 18 that extends in the Z direction, and the first connecting portion 334A and the second connecting portion 334B are arranged along a tangentially extending portion of the winding winding portion 18 that extends in the X direction.

[0112] The first connecting portion 334A and the second connecting portion 334B are the same as in the first embodiment and the like in that they have a plurality of through holes 336 that penetrate in the Z direction.

[0113] As described above, in the ninth embodiment, the first insulating portion 332A, the second insulating portion 332B, the first connecting portion 334A, and the second connecting portion 334B are repeatedly arranged in succession in this order to form a single insulating member 330. Therefore, compared to using a plurality of insulating members 330, the number of parts and the number of assembly steps can be reduced, resulting in cost reduction.

[0114] Tenth Embodiment Next, a stator 10 according to a tenth embodiment will be described.

[0115] 54, the stator 10 according to the tenth embodiment has a 10-pole, 12-slot configuration, with 10 magnetic poles and 12 slots 28, similar to the fourth embodiment. In the tenth embodiment, the configuration of the insulating member 330 is changed as follows compared to the ninth embodiment (see also FIGS. 55 and 56).

[0116] That is, the insulating member 330 has a U-phase insulating attachment portion 330U attached across the U+ phase winding portion 18 and the U- phase winding portion 18, a V-phase insulating attachment portion 330V attached across the V+ phase winding portion 18 and the V- phase winding portion 18, and a W-phase insulating attachment portion 330W attached across the W+ phase winding portion 18 and the W- phase winding portion 18.

[0117] In the U-phase insulating mounting portion 330U, the first insulating portion 332A is arranged between the U+ phase winding winding portion 18 and the V- phase winding winding portion 18, and the second insulating portion 332B is arranged between the U- phase winding winding portion 18 and the W+ phase winding winding portion 18.

[0118] In the V-phase insulating mounting portion 330V, the first insulating portion 332A is arranged between the V+ phase winding winding portion 18 and the W- phase winding winding portion 18, and the second insulating portion 332B is arranged between the V- phase winding winding portion 18 and the U+ phase winding winding portion 18.

[0119] In the W-phase insulating mounting portion 330W, the first insulating portion 332A is arranged between the W+ phase winding winding portion 18 and the U- phase winding winding portion 18, and the second insulating portion 332B is arranged between the W- phase winding winding portion 18 and the V+ phase winding winding portion 18.

[0120] In the tenth embodiment, neither the first insulating portion 332A nor the second insulating portion 332B is disposed between the winding winding portions 18 of the same phase. However, since the potential difference between the winding winding portions 18 of the same phase is smaller than the potential difference between the winding winding portions 18 of different phases, insulation is not required.

[0121] The first connecting portion 334A and the second connecting portion 334B are the same as in the first embodiment and the like in that they have a plurality of through holes 336 that penetrate in the Z direction.

[0122] In this way, in the tenth embodiment, insulation between the winding portions 18 of the same phase is omitted, which allows for cost reduction compared to when insulation is provided between the winding portions 18 of the same phase.

[0123] Eleventh Embodiment Next, a stator 10 according to an eleventh embodiment will be described.

[0124] As shown in Fig. 57, the stator 10 according to the eleventh embodiment has an eight-pole, nine-slot configuration, with eight magnetic poles and nine slots 28, similar to the first modified example of the eighth embodiment (see Fig. 44). In the eleventh embodiment, an insulating member 430 is used instead of the insulating member 230 of the first modified example of the eighth embodiment (see also Figs. 58 and 59).

[0125] The insulating member 430 has a plurality of insulating portions 432, a plurality of first connecting portions 434A, and a second connecting portion 434B. The plurality of first connecting portions 434A and the second connecting portion 434B are examples of "connecting portions" according to the technology of the present disclosure. The number of the plurality of first connecting portions 434A is two. The plurality of insulating portions 432 are respectively arranged between the U+ phase winding portion 18 and the V+ phase winding portion 18, between the U+ phase winding portion 18 and the W+ phase winding portion 18, and between the V+ phase winding portion 18 and the W+ phase winding portion 18.

[0126] Each first coupling portion 434A is disposed on the arrow Z1 side of the winding portion 18 and couples together first ends of adjacent insulating portions 432 on the arrow Z1 side. Each second coupling portion 434B is disposed on the arrow Z2 side of the winding portion 18 and couples together second ends of adjacent insulating portions 432 on the arrow Z2 side.

[0127] In the eleventh embodiment, no insulating portion is disposed between the winding portions 18 of the same phase. However, since the potential difference between the winding portions 18 of the same phase is smaller than the potential difference between the winding portions 18 of different phases, insulation is not required.

[0128] The first connecting portion 434 and the second connecting portion 434 have a plurality of through holes 436 penetrating in the Z direction, which is the same as in the first embodiment.

[0129] In this way, in the eleventh embodiment, insulation between the winding portions 18 of the same phase is omitted, which allows for cost reduction compared to when insulation is provided between the winding portions 18 of the same phase.

[0130] Among the above-described multiple embodiments (including modified examples), embodiments that can be combined may be combined as appropriate.

[0131] The above describes one embodiment of the present disclosure, but the present disclosure is not limited to the above, and it goes without saying that various modifications can be made to the present disclosure without departing from the spirit of the present disclosure.

[0132] The following are additional notes regarding this disclosure. (Supplementary Note 1) A stator (10) comprising: a stator core (24) having a plurality of radially extending tooth portions (22) and a plurality of slots (28) formed between the plurality of tooth portions; an insulator (16) attached to the stator core; a plurality of winding winding portions (18) wound around the plurality of tooth portions with the insulator interposed therebetween; and an insulating member (30, 130, 230, 330, 430) having a plurality of insulating portions (32A, 32B, 132A, 132B, 232, 332A, 332B, 432) inserted into selected slots of the plurality of slots and insulating between adjacent winding winding portions of the plurality of winding winding portions, and connecting portions (34, 134A, 134B, 234, 334A, 334B, 434A, 434B) connecting the plurality of insulating portions. (Supplementary Note 2) The stator according to Supplementary Note 1, comprising a plurality of the insulating members (30), each of the insulating members having a first insulating portion (32A) and a second insulating portion (32B) as the plurality of insulating portions, the first insulating portion being inserted into a first selected slot of the plurality of selected slots, the second insulating portion being inserted into a second selected slot of the plurality of selected slots, and the connecting portion (34) connecting one end portion of the first insulating portion and the second insulating portion in the axial direction of the stator core. (Supplementary Note 3) The stator according to Supplementary Note 2, wherein the second selected slot is a slot adjacent to the first selected slot. (Supplementary Note 4) The stator according to Supplementary Note 2 or Supplementary Note 3, wherein the first insulating portion (32A) has a first tip portion (52A) located on the opposite side to the connecting portion, the second insulating portion (32B) has a second tip portion (52B) located on the opposite side to the connecting portion, the connecting portion (34) is arranged on one side of the winding winding portion in the axial direction of the stator core, the first tip portion has a first extension portion (54A) located on the other side of the winding winding portion in the axial direction of the stator core and extending toward the second insulating portion, and the second tip portion has a second extension portion (54B) located on the other side of the winding winding portion in the axial direction of the stator core and extending toward the first insulating portion.(Supplementary Note 5) The stator according to Supplementary Note 1, comprising a plurality of the insulating members (130), each of the insulating members being a heat-shrinkable tube, and having a first insulating portion (132A) and a second insulating portion (132B) as the insulating portions, and a first connecting portion (134A) and a second connecting portion (134B) as the connecting portion, the first insulating portion being inserted into a first selected slot of the plurality of selected slots, the second insulating portion being inserted into a second selected slot of the plurality of selected slots, the first connecting portion connecting first ends of the first insulating portion and the second insulating portion to each other, and the second connecting portion connecting second ends of the first insulating portion and the second insulating portion to each other. (Supplementary Note 6) The inverter includes a plurality of the insulating members (30), wherein the plurality of winding winding portions include a plurality of U-phase winding winding portions, a plurality of V-phase winding winding portions, and a plurality of W-phase winding winding portions, and the plurality of insulating members include a U-phase insulating member attached across the plurality of U-phase winding winding portions, a V-phase insulating member attached across the plurality of V-phase winding winding portions, and a W-phase insulating member attached across the plurality of W-phase winding winding portions, and the U-phase insulating member, the V-phase insulating member, and the W-phase insulating member each include a first insulating portion (32A) and a second insulating portion (32B) as the plurality of insulating portions, The stator according to Supplementary Note 1, wherein in the insulating member for U-phase, the first insulating portion is arranged between the winding winding portion for U-phase and the winding winding portion for V-phase, and the second insulating portion is arranged between the winding winding portion for U-phase and the winding winding portion for W-phase; in the insulating member for V-phase, the first insulating portion is arranged between the winding winding portion for V-phase and the winding winding portion for W-phase, and the second insulating portion is arranged between the winding winding portion for V-phase and the winding winding portion for U-phase; and in the insulating member for W-phase, the first insulating portion is arranged between the winding winding portion for W-phase and the winding winding portion for U-phase, and the second insulating portion is arranged between the winding winding portion for W-phase and the winding winding portion for V-phase. (Supplementary Note 7) The stator according to Supplementary Note 1, wherein the connecting portion (234) is formed in a ring shape along the circumferential direction of the stator core.(Supplementary Note 8) The stator according to Supplementary Note 1 or Supplementary Note 7, wherein the insulating member (230) is formed of a sheet material, and each of the insulating portions (232) is bent into a V-shape when viewed in the axial direction of the stator core. (Supplementary Note 9) The stator according to Supplementary Note 1, wherein the connecting portion (230) is formed in a cylindrical shape along the circumferential direction of the stator core and is arranged radially inward of the stator core, and each of the insulating portions (232) extends from the connecting portion to the radially outward side of the stator core. (Supplementary Note 10) The stator according to Supplementary Note 1 or Supplementary Note 9, wherein the insulating member (230) is formed of a sheet material, and each of the insulating portions (232) is bent into a V-shape when viewed in the axial direction of the stator core. (Supplementary Note 11) The stator according to Supplementary Note 1, wherein the plurality of winding winding portions include a plurality of winding winding portions for a U phase, a plurality of winding winding portions for a V phase, and a plurality of winding winding portions for a W phase, the plurality of insulating portions (232) are respectively arranged between the winding winding portion for the U phase and the winding winding portion for the V phase, between the winding winding portion for the U phase and the winding winding portion for the W phase, and between the winding winding portion for the V phase and the winding winding portion for the W phase, and the connecting portion (234) is formed in a ring shape along the circumferential direction of the stator core. (Supplementary Note 12) The insulating member (330) is configured such that a first insulating portion (332A) and a second insulating portion (332B) as the insulating portions and a first connecting portion (334A) and a second connecting portion (334B) as the connecting portions are repeatedly and continuously arranged in the order of the first insulating portion, the first connecting portion, the second insulating portion, and the second connecting portion, the first insulating portion is inserted into a first selected slot of the plurality of selected slots, the second insulating portion is inserted into a second selected slot of the plurality of selected slots that is adjacent to the first selected slot, the first connecting portion is arranged on one side of the winding winding portion in the axial direction of the stator core, and the second connecting portion is arranged on the other side of the winding winding portion in the axial direction of the stator core.(Supplementary Note 13) The plurality of winding winding portions include a plurality of winding winding portions of a U-phase, a plurality of winding winding portions of a V-phase, and a plurality of winding winding portions of a W-phase, and the insulating member (330) is configured such that a first insulating portion (332A) and a second insulating portion (332B) as the plurality of insulating portions, and a first connecting portion (334A) and a second connecting portion (334B) as the connecting portion are repeatedly and continuously arranged in the order of the first insulating portion, the first connecting portion, the second insulating portion, and the second connecting portion, and the insulating member has a U-phase insulating attachment portion (330U) attached across the plurality of winding winding portions of the U-phase, a V-phase insulating attachment portion (330V) attached across the plurality of winding winding portions of the V-phase, and a W-phase insulating attachment portion (330W) attached across the plurality of winding winding portions of the W-phase, The insulating attachment portion of the U phase, the insulating attachment portion of the V phase, and the insulating attachment portion of the W phase each have a first insulating portion (332A) and a second insulating portion (332B) as a plurality of the insulating portions, in the insulating attachment portion of the U phase, the first insulating portion is arranged between the winding winding portion of the U phase and the winding winding portion of the V phase, and the second insulating portion is arranged between the winding winding portion of the U phase and the winding winding portion of the W phase, in the insulating attachment portion of the V phase, the first insulating portion is arranged between the winding winding portion of the V phase and the winding winding portion of the W phase, and the second insulating portion is arranged between the winding winding portion of the V phase and the winding winding portion of the U phase, 2. The stator according to claim 1, wherein, in the W-phase insulation attachment portion, the first insulating portion is disposed between the W-phase winding winding portion and the U-phase winding winding portion, and the second insulating portion is disposed between the W-phase winding winding portion and the V-phase winding winding portion.(Supplementary Note 14) The plurality of winding winding portions include a plurality of winding winding portions of a U-phase, a plurality of winding winding portions of a V-phase, and a plurality of winding winding portions of a W-phase, and the plurality of insulating portions (432) are respectively arranged between the winding winding portion of the U-phase and the winding winding portion of the V-phase, between the winding winding portion of the U-phase and the winding winding portion of the W-phase, and between the winding winding portion of the V-phase and the winding winding portion of the W-phase, and the insulating member (430) has a first connecting portion (434A) and a second connecting portion (434B) as the connecting portion, and the first connecting portion is arranged on one side of the winding winding portions in the axial direction of the stator core and connects first ends of adjacent insulating portions among the plurality of insulating portions, The stator according to Supplementary Note 1, wherein the second connecting portion is arranged on the other side of the winding winding portion in the axial direction of the stator core and connects second ends of adjacent insulating portions among the plurality of insulating portions. (Supplementary Note 15) The stator according to any one of Supplementary Note 1 to Supplementary Note 14, wherein the connecting portion is arranged on one side of the winding winding portion in the axial direction of the stator core and has a through hole (36, 136, 236, 336, 436) penetrating the stator core in the axial direction.

Claims

1. A stator (10) comprising: a stator core (24) having a plurality of radially extending teeth (22) and a plurality of slots (28) formed between the plurality of teeth; an insulator (16) attached to the stator core; a plurality of winding windings (18) wound around the plurality of teeth via the insulator; and an insulating member (30, 130, 230, 330, 430) having a plurality of insulating portions (32A, 32B, 132A, 132B, 232, 332A, 332B, 432) inserted into selected slots of the plurality of slots and insulating between adjacent winding windings of the plurality of winding windings, and connecting portions (34, 134A, 134B, 234, 334A, 334B, 434A, 434B) connecting the plurality of insulating portions.

2. A stator as described in claim 1, comprising a plurality of insulating members (30), each of which has a first insulating portion (32A) and a second insulating portion (32B) as the plurality of insulating portions, the first insulating portion being inserted into a first selected slot of the plurality of selected slots, the second insulating portion being inserted into a second selected slot of the plurality of selected slots, and the connecting portion (34) connecting one end of the first insulating portion and the second insulating portion in the axial direction of the stator core.

3. The stator according to claim 2, wherein the second selected slot is a slot adjacent to the first selected slot.

4. A stator as set forth in claim 2 or claim 3, wherein the first insulating portion (32A) has a first tip portion (52A) located on the opposite side to the connecting portion, the second insulating portion (32B) has a second tip portion (52B) located on the opposite side to the connecting portion, the connecting portion (34) is arranged on one side of the winding winding portion in the axial direction of the stator core, the first tip portion has a first extension portion (54A) located on the other side of the winding winding portion in the axial direction of the stator core and extending toward the second insulating portion, and the second tip portion has a second extension portion (54B) located on the other side of the winding winding portion in the axial direction of the stator core and extending toward the first insulating portion.

5. A stator according to claim 1, comprising a plurality of insulating members (130), each of which is a heat-shrinkable tube and has a first insulating portion (132A) and a second insulating portion (132B) as the insulating portions, and a first connecting portion (134A) and a second connecting portion (134B) as the connecting portion, wherein the first insulating portion is inserted into a first selected slot of the plurality of selected slots, and the second insulating portion is inserted into a second selected slot of the plurality of selected slots, the first connecting portion connects first ends of the first insulating portion and the second insulating portion to each other, and the second connecting portion connects second ends of the first insulating portion and the second insulating portion to each other.

6. A motor comprising a plurality of insulating members (30), wherein the plurality of winding winding portions include a plurality of U-phase winding winding portions, a plurality of V-phase winding winding portions, and a plurality of W-phase winding winding portions, wherein the plurality of insulating members include a U-phase insulating member attached across the plurality of U-phase winding winding portions, a V-phase insulating member attached across the plurality of V-phase winding winding portions, and a W-phase insulating member attached across the plurality of W-phase winding winding portions, wherein the U-phase insulating member, the V-phase insulating member, and the W-phase insulating member each have a plurality of first insulating portions (32A) and second insulating portions (32B) as the insulating portions, wherein in the U-phase insulating member, the first insulating portion is arranged between the U-phase winding winding portion and the V-phase winding portion, and the second insulating portion is arranged between the U-phase winding winding portion and the W-phase winding winding portion, 2. The stator according to claim 1, wherein in the insulating member for V phase, the first insulating portion is arranged between the winding winding portion for V phase and the winding winding portion for W phase, and the second insulating portion is arranged between the winding winding portion for V phase and the winding winding portion for U phase; and in the insulating member for W phase, the first insulating portion is arranged between the winding winding portion for W phase and the winding winding portion for U phase, and the second insulating portion is arranged between the winding winding portion for W phase and the winding winding portion for V phase.

7. A stator according to claim 1, wherein the connecting portion (234) is formed in a ring shape along the circumferential direction of the stator core.

8. A stator according to claim 1 or claim 7, wherein the insulating member (230) is formed from a sheet material, and each of the insulating portions (232) is bent into a V-shape when viewed in the axial direction of the stator core.

9. A stator according to claim 1, wherein the connecting portion (230) is formed in a cylindrical shape along the circumferential direction of the stator core and is arranged radially inward of the stator core, and each insulating portion (232) extends from the connecting portion to the radially outward side of the stator core.

10. A stator as set forth in claim 1, wherein the plurality of winding winding portions include a plurality of U-phase winding winding portions, a plurality of V-phase winding winding portions, and a plurality of W-phase winding winding portions, the plurality of insulating portions (232) are respectively arranged between the U-phase winding winding portion and the V-phase winding winding portion, between the U-phase winding winding portion and the W-phase winding winding portion, and between the V-phase winding winding portion and the W-phase winding winding portion, and the connecting portion (234) is formed in a ring shape along the circumferential direction of the stator core.

11. The stator according to claim 1, wherein the insulating member (330) is configured with a first insulating portion (332A) and a second insulating portion (332B) as the insulating portions, and a first connecting portion (334A) and a second connecting portion (334B) as the connecting portions, which are repeatedly arranged in succession in the order of the first insulating portion, the first connecting portion, the second insulating portion, and the second connecting portion, wherein the first insulating portion is inserted into a first selected slot of the plurality of selected slots, and the second insulating portion is inserted into a second selected slot of the plurality of selected slots that is adjacent to the first selected slot, and the first connecting portion is arranged on one side of the winding winding portion in the axial direction of the stator core, and the second connecting portion is arranged on the other side of the winding winding portion in the axial direction of the stator core.

12. The plurality of winding portions include a plurality of winding portions of a U-phase, a plurality of winding portions of a V-phase, and a plurality of winding portions of a W-phase; the insulating member (330) is configured such that a first insulating portion (332A) and a second insulating portion (332B) as the plurality of insulating portions and a first connecting portion (334A) and a second connecting portion (334B) as the connecting portion are repeatedly arranged in the order of the first insulating portion, the first connecting portion, the second insulating portion, and the second connecting portion; the insulating member has a U-phase insulating attachment portion (330U) attached across the plurality of winding portions of the U-phase, a V-phase insulating attachment portion (330V) attached across the plurality of winding portions of the V-phase, and a W-phase insulating attachment portion (330W) attached across the plurality of winding portions of the W-phase; The insulating attachment portion of the U phase, the insulating attachment portion of the V phase, and the insulating attachment portion of the W phase each have a first insulating portion (332A) and a second insulating portion (332B) as a plurality of the insulating portions, in the insulating attachment portion of the U phase, the first insulating portion is arranged between the winding winding portion of the U phase and the winding winding portion of the V phase, and the second insulating portion is arranged between the winding winding portion of the U phase and the winding winding portion of the W phase, in the insulating attachment portion of the V phase, the first insulating portion is arranged between the winding winding portion of the V phase and the winding winding portion of the W phase, and the second insulating portion is arranged between the winding winding portion of the V phase and the winding winding portion of the U phase, 2. The stator according to claim 1, wherein in the W-phase insulation attachment portion, the first insulating portion is arranged between the W-phase winding winding portion and the U-phase winding winding portion, and the second insulating portion is arranged between the W-phase winding winding portion and the V-phase winding winding portion.

13. The plurality of winding winding portions include a plurality of winding winding portions of a U-phase, a plurality of winding winding portions of a V-phase, and a plurality of winding winding portions of a W-phase, and the plurality of insulating portions (432) are respectively arranged between the winding winding portion of the U-phase and the winding winding portion of the V-phase, between the winding winding portion of the U-phase and the winding winding portion of the W-phase, and between the winding winding portion of the V-phase and the winding winding portion of the W-phase, and the insulating member (430) has a first connecting portion (434A) and a second connecting portion (434B) as the connecting portion, and the first connecting portion is arranged on one side of the winding winding portions in the axial direction of the stator core and connects first ends of adjacent insulating portions among the plurality of insulating portions, The stator according to claim 1 , wherein the second connecting portion is arranged on the other side of the winding winding portion in the axial direction of the stator core, and connects second ends of adjacent ones of the plurality of insulating portions.

14. A stator according to any one of claims 1 to 13, wherein the connecting portion is disposed on one side of the winding portion in the axial direction of the stator core, and has a through hole (36, 136, 236, 336, 436) that passes through the stator core in the axial direction.

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