stator

Abstract

The stator (10) includes a stator core portion having a plurality of tooth portions extending in a radial direction and a plurality of slots (28) formed between the plurality of tooth portions, an insulator mounted to the stator core portion, a plurality of winding portions (18) wound to the plurality of tooth portions with the insulator interposed therebetween, and an insulating member (30) having a plurality of insulating portions (32A, 32B) inserted into a plurality of selected slots of the plurality of slots and insulating between adjacent winding portions of the plurality of winding portions, and a connecting portion (34) connecting the plurality of insulating portions.

Description

[0001] Mutual citation of related applications

[0002] This application is based on and claims priority to Japanese Patent Application No. 2024-032882, filed on March 5, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The technology disclosed herein relates to stators. Background Technology

[0004] As a stator, a known stator includes: a stator core having a plurality of radially extending pole teeth and a plurality of slots formed between the pole teeth; an insulator mounted on the stator core; and a plurality of winding portions wound around the pole teeth with the insulator in between. Furthermore, in this stator, there is a structure in which insulating sheets are inserted into the slots to insulate adjacent winding portions (for example, see Japanese Patent Application Laid-Open No. 2008-042959). It can be considered that this stator can ensure insulation between adjacent winding portions. Summary of the Invention

[0005] After detailed research, the inventors discovered the following problem: When inserting multiple independently structured insulating sheets into each slot one by one, the cost may increase due to the increased number of components and assembly time.

[0006] The technology disclosed herein provides a stator that reduces costs compared to inserting multiple insulating sheets of independent structure one by one into each slot.

[0007] The stator disclosed herein includes: a stator core having a plurality of radially extending pole teeth and a plurality of slots formed between the plurality of pole teeth; an insulator mounted on the stator core; a plurality of winding portions wound around the plurality of pole teeth with respect to the insulator; and an insulating member having a plurality of insulating portions and a connecting portion, wherein the plurality of insulating portions are inserted into a plurality of selector slots among the plurality of slots and insulate adjacent winding portions among the plurality of winding portions, and the connecting portion connects the plurality of insulating portions.

[0008] According to the technology disclosed herein, a stator is provided that can reduce costs compared to inserting multiple insulating sheets of independent structure one by one into each slot. Attached Figure Description

[0009] Figure 1 This is a top view of the stator in the reference example.

[0010] Figure 2 This is a top view of the stator according to the first embodiment.

[0011] Figure 3 This is an unfolded diagram showing the stator according to the first embodiment unfolded into a straight line.

[0012] Figure 4 yes Figure 3 Enlarged view of the main parts.

[0013] Figure 5 This is a perspective view showing the state in which an insulating member is mounted on a stator component according to the first embodiment.

[0014] Figure 6 This is a perspective view of the insulating component according to the first embodiment.

[0015] Figure 7 This is an explanatory diagram illustrating the case where an insulating member is installed on the stator constituent member according to the first embodiment.

[0016] Figure 8 This is a top view showing the state in which an insulating member is mounted on the stator component according to the first embodiment.

[0017] Figure 9 This is an enlarged perspective view of the main part of the stator according to the first embodiment.

[0018] Figure 10 This is an unfolded view showing the stator according to the second embodiment unfolded into a straight line, and it is an enlarged view showing the main parts.

[0019] Figure 11 This is a perspective view of the insulating component according to the second embodiment.

[0020] Figure 12 This is an explanatory diagram illustrating the case where an insulating member is installed on a stator component according to the second embodiment.

[0021] Figure 13 This is an unfolded diagram showing the stator according to the third embodiment unfolded into a straight line.

[0022] Figure 14 yes Figure 13 Enlarged view of the main parts.

[0023] Figure 15 This is a perspective view showing the state in which an insulating member is mounted on the stator component according to the third embodiment.

[0024] Figure 16 This is a perspective view of the insulating component involved in the third embodiment.

[0025] Figure 17This is an explanatory diagram illustrating the case where an insulating member is installed on the stator component according to the third embodiment.

[0026] Figure 18 This is a top view of the stator according to the fourth embodiment.

[0027] Figure 19 This is an unfolded diagram showing the stator according to the fourth embodiment unfolded into a straight line.

[0028] Figure 20 This is a perspective view showing the state in which an insulating member is mounted on the stator component according to the fourth embodiment.

[0029] Figure 21 This is a perspective view of the insulating component according to the fourth embodiment.

[0030] Figure 22 This is a top view showing the state in which an insulating member is mounted on the stator component according to the fourth embodiment.

[0031] Figure 23 This is a top view of the stator according to the first variation of the fourth embodiment.

[0032] Figure 24 This is a perspective view showing the state in which an insulating member is mounted on a stator component according to the first variation of the fourth embodiment.

[0033] Figure 25 This is a perspective view of the insulating member involved in the first variation of the fourth embodiment.

[0034] Figure 26 This is a top view showing the state in which an insulating member is mounted on a stator component according to the first variation of the fourth embodiment.

[0035] Figure 27 This is a perspective view showing the state in which an insulating member is mounted on a stator component according to the second variation of the fourth embodiment.

[0036] Figure 28 This is a perspective view of the insulating member involved in the second variation of the fourth embodiment.

[0037] Figure 29 This is a perspective view showing the state in which an insulating member is mounted on a stator component according to the third variation of the fourth embodiment.

[0038] Figure 30 This is a perspective view of the insulating member involved in the third variation of the fourth embodiment.

[0039] Figure 31This is a top view of the stator according to the fifth embodiment.

[0040] Figure 32 This is an unfolded diagram showing the stator according to the fifth embodiment unfolded into a straight line.

[0041] Figure 33 This is a perspective view of the insulating component according to the fifth embodiment.

[0042] Figure 34 This is a top view of the insulating member according to the fifth embodiment.

[0043] Figure 35 This is a perspective view of the insulating component according to the sixth embodiment.

[0044] Figure 36 This is a top view of the insulating member according to the sixth embodiment.

[0045] Figure 37 This is a top view of the stator according to the seventh embodiment.

[0046] Figure 38 This is a perspective view of the insulating member according to the seventh embodiment.

[0047] Figure 39 This is a top view of the insulating member according to the seventh embodiment.

[0048] Figure 40 This is a top view of the stator according to the eighth embodiment.

[0049] Figure 41 This is an unfolded diagram showing the stator according to the eighth embodiment unfolded into a straight line.

[0050] Figure 42 This is a perspective view of the insulating member according to the eighth embodiment.

[0051] Figure 43 This is a top view of the insulating member according to the eighth embodiment.

[0052] Figure 44 This is a top view of the stator according to the first variation of the eighth embodiment.

[0053] Figure 45 This is a perspective view of the insulating member involved in the first variation of the eighth embodiment.

[0054] Figure 46 This is a top view of the insulating member involved in the first variation of the eighth embodiment.

[0055] Figure 47 This is a perspective view of the insulating member involved in the second variation of the eighth embodiment.

[0056] Figure 48 This is a top view of the insulating member involved in the second variation of the eighth embodiment.

[0057] Figure 49 This is a perspective view of the insulating member involved in the third variation of the eighth embodiment.

[0058] Figure 50 This is a top view of the insulating member involved in the third variation of the eighth embodiment.

[0059] Figure 51 This is an unfolded diagram showing the stator according to the ninth embodiment unfolded into a straight line.

[0060] Figure 52 This is a perspective view of the insulating member according to the ninth embodiment.

[0061] Figure 53 This is a top view of the insulating member according to the ninth embodiment.

[0062] Figure 54 This is an unfolded view showing the stator according to the tenth embodiment unfolded into a straight line.

[0063] Figure 55 This is a perspective view of the insulating member according to the tenth embodiment.

[0064] Figure 56 This is a top view of the stator according to the tenth embodiment.

[0065] Figure 57 This is a top view of the stator according to the eleventh embodiment.

[0066] Figure 58 This is a perspective view of the insulating component according to the eleventh embodiment.

[0067] Figure 59 This is a top view of the insulating member according to the eleventh embodiment. Detailed Implementation

[0068] [Reference Example]

[0069] First, the stator involved in the reference example will be explained, which serves as a premise for the stator involved in the first to eleventh embodiments of the present disclosure described later.

[0070] like Figure 1 As shown, the stator 10 includes a plurality of stator constituent members 12. The stator 10 is constructed by assembling the plurality of stator constituent members 12 into a ring shape. Figure 1The diagram shows half of the structure of stator 10. Stator 10 is used in a brushless motor. Brushless motors can be used for any application. Examples of brushless motors include fan motors, pump drive motors, and compressor motors.

[0071] The X direction represents the tangential direction of the stator 10, the Y direction represents the radial direction of the stator 10, and the Z direction represents the axial direction of the stator 10. Furthermore, in the following description, the circumferential direction of the stator 10 refers to the direction about the central axis of the stator 10. The tangential, radial, axial, and circumferential directions of the stator core 24, as described later, are the same as the tangential, radial, axial, and circumferential directions of the stator 10, respectively.

[0072] Each stator component 12 includes a core component 14, an insulator 16, and a winding portion 18. The core component 14, when viewed from above, is T-shaped and has a core back 20 and pole teeth 22. The core back 20 extends circumferentially along the stator core 24, and the pole teeth 22 extend radially inward from the center of the core back 20 toward the stator core 24. The front end of the pole teeth 22 is a free end, and the base end of the pole teeth 22 is connected to the core back 20.

[0073] The stator core 24 is constructed by assembling multiple core members 14 into a ring. In the state of constructing the stator core 24, multiple core backs 20 form annular portions 26 that serve as the outer periphery of the stator core 24, and multiple pole teeth 22 extend radially from the center portion of the stator core 24. Grooves 28 are formed between adjacent pole teeth 22.

[0074] The insulator 16 is mounted on the core member 14. Specifically, the insulator 16 is mounted on the pole tooth portion 22 in a manner surrounding the pole tooth portion 22 in the Y direction. The insulator 16 is made of resin. Examples of resins forming the insulator 16 include polyimide, polyamide, polyphenylene sulfide (PPS), and polybutylene terephthalate (PBT). The resin forming the insulator 16 can be any resin.

[0075] The winding portion 18 is wound around the pole tooth portion 22 with the insulator 16 in between. The winding portion 18 is formed by radially winding the winding wire around the stator core portion 24 relative to the pole tooth portion 22.

[0076] However, in the stator 10 with the above-described structure, when a high voltage is applied to the winding section 18, insulating sheets are sometimes inserted into the slots 28 to insulate adjacent winding sections 18. Here, when multiple independently structured insulating sheets are inserted one by one into each slot 28, the cost increases due to the increased number of components. The purpose of the stator 10 described below in the first to tenth embodiments is to reduce cost compared to the case where multiple independently structured insulating sheets are inserted one by one into each slot 28.

[0077] Additionally, in the following description, the side with arrow Z1 indicates one axial side of the stator core 24, and the side with arrow Z2 indicates the other axial side of the stator core 24.

[0078] [First Implementation]

[0079] Next, the stator 10 according to the first embodiment will be described.

[0080] like Figure 2 and Figure 3 As shown, the stator 10 includes a plurality of insulating members 30. The plurality of insulating members 30 are installed at every other interval relative to a plurality of stator constituent members 12. Each insulating member 30 is installed on a stator constituent member 12. The insulating members 30 have the same structure and are installed on the stator constituent member 12 in the same orientation.

[0081] like Figures 4 to 6 As shown, 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 "multiple insulating portions" involved in the present disclosure. Each insulating member 30 is formed, for example, from a sheet-like member made of insulating resin.

[0082] In each insulating member 30, a first insulating portion 32A is inserted into one of the plurality of slots 28, and a 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 slots 28. The slot 28 into which the first insulating portion 32A is inserted is an example of the "selection slot" and "first selection slot" involved in the present disclosure, and the slot 28 into which the second insulating portion 32B is inserted is an example of the "selection slot" and "second selection slot" involved in the present disclosure.

[0083] The first insulating portion 32A extends along the Y and Z directions. When inserted into the slot 28, the first insulating portion 32A is disposed between adjacent winding portions 18, insulating them from each other. Similarly, the second insulating portion 32B extends along the Y and Z directions. When inserted into the slot 28, the second insulating portion 32B is disposed between adjacent winding portions 18, insulating them from each other. The connecting portion 34 extends along the X and Y directions. The connecting portion 34 is disposed on the arrow Z1 side of the winding portion 18, connecting the arrow Z1 side ends of the first insulating portion 32A and the second insulating portion 32B to each other.

[0084] like Figure 7As shown, the insulating member 30 is mounted to the stator component 12 from the side indicated by arrow Z1. More specifically, the insulating member 30 is mounted to the winding portion 18 in the stator component 12. With the insulating member 30 mounted to the winding portion 18, the first insulating portion 32A and the second insulating portion 32B are arranged along the axial extension portion (Z-direction) of the winding portion 18, and the connecting portion 34 is arranged along the tangential extension portion (X-direction) of the winding portion 18. The insulating member 30 can be mounted to the stator component 12 before the multiple stator components 12 are assembled into a ring, or it can be mounted to the stator component 12 after the multiple stator components 12 are assembled into a ring.

[0085] like Figure 8 As shown, the connecting portion 34 has a plurality of through holes 36 extending along the Z direction. The number of through holes 36 can be arbitrary. Alternatively, the connecting portion 34 may have only one through hole 36.

[0086] like Figure 9 As shown, the stator 10 has an insulator cover 38. The insulator cover 38 is disposed on the side of the insulating member 30 (arrow Z1). The insulator cover 38 has a fitting portion 40, and the insulator 16 has a fitting portion 42. The insulator cover 38 is fixed to the insulator 16 by fitting the fitting portion 40 with the fitting portion 42. The insulator cover 38 has a pressing portion 44. The pressing portion extends along the Z direction toward the insulating member 30 (i.e., the side of arrow Z2) and presses against the insulating member 30. More specifically, the pressing portion 44 presses against the connecting portion 34.

[0087] As detailed above, the stator 10 according to the first embodiment includes an insulating member 30. The insulating member 30 includes: a first insulating portion 32A, which is inserted into one of a plurality of slots 28; a second insulating portion 32B, which is inserted into a slot 28 adjacent to the slot 28 into which the first insulating portion 32A is inserted; and a connecting portion 34, which connects the first insulating portion 32A and the second insulating portion 32B. Therefore, compared with the case where multiple insulating sheets of independent structure are inserted one by one into each slot 28, the number of parts and assembly time can be reduced, thereby reducing costs.

[0088] Furthermore, the connecting portion 34 connects the ends of the first insulating portion 32A and the second insulating portion 32B on the arrow Z1 side to each other. Therefore, since it can be installed on the stator component 12 from the arrow Z1 side, the workability during assembly can be improved.

[0089] Furthermore, 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. Therefore, each insulating member 30 can be installed with respect to every other one of the plurality of stator constituent members 12.

[0090] Furthermore, the connecting portion 34 is disposed on the arrow Z1 side of the winding portion 18 and has a plurality of through holes 36 extending along 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, thus suppressing the decrease in cooling performance of the winding portion 18.

[0091] [Second Implementation]

[0092] Next, the stator 10 according to the second embodiment will be described.

[0093] In the second embodiment, the structure of the insulating member 30 is changed compared to the first embodiment as follows. That is, as... Figure 10 and Figure 11 As shown, the first insulating portion 32A has a first front end portion 52A located on the opposite side of the connecting portion 34, and a first protrusion 54A is formed on the first front end portion 52A. The first protrusion 54A is disposed on the arrow Z2 side of the winding portion 18 and extends toward the second insulating portion 32B side.

[0094] Similarly, the second insulating portion 32B has a second front end portion 52B located on the opposite side of the connecting portion 34, and a second protrusion 54B is formed on the second front end portion 52B. The second protrusion 54B is disposed on the arrow Z2 side of the winding portion 18 and extends toward the first insulating portion 32A side.

[0095] The first protrusion 54A and the second protrusion 54B have a plurality of through holes 56 extending along the Z direction. The number of through holes 56 can be arbitrary. Alternatively, the first protrusion 54A and the second protrusion 54B may each have one through hole 56.

[0096] like Figure 12 As shown, the insulating member 30 is assembled to the stator component 12 from the arrow Z1 side with the first protrusion 54A and the second protrusion 54B extending in the Z direction. Then, the insulating member 30 is installed to the stator component 12 by bending the first protrusion 54A toward the second insulating portion 32B and bending the second protrusion 54B toward the first insulating portion 32A. The insulating member 30 can be installed on the stator component 12 either before the multiple stator component 12s are assembled into a ring or after the multiple stator component 12s are assembled into a ring.

[0097] Thus, in the second embodiment, a first protrusion 54A extending toward the second insulation portion 32B is formed at the first front end portion 52A of the first insulation portion 32A, and a second protrusion 54B extending toward the first insulation portion 32A is formed at the second front end portion 52B of the second insulation portion 32B. The first protrusion 54A and the second protrusion 54B are disposed on the arrow Z2 side of the winding portion 18. Therefore, it is possible to prevent the insulation member 30 from disengaging from the stator component 12 toward the arrow Z1 side.

[0098] Furthermore, the first protrusion 54A and the second protrusion 54B have a plurality of through holes 56 extending along the Z direction. Therefore, even when cooling air flowing in the Z direction is supplied to the winding section 18, the cooling air can pass through the plurality of through holes 56, thus suppressing the decrease in cooling performance of the winding section 18.

[0099] [Third Implementation]

[0100] Next, the stator 10 according to the third embodiment will be described.

[0101] like Figure 13 and Figure 14 As shown, in the third embodiment, compared to the first embodiment, a plurality of insulating members 130 are used instead of a plurality of insulating members 30 (see Figure 1). Figure 2 and Figure 3 Multiple insulating members 130 are installed every other one relative to multiple stator constituent members 12. Each insulating member 130 is installed on one stator constituent member 12. Each insulating member 130 has the same structure and is installed on the stator constituent member 12 with the same orientation.

[0102] 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) Figure 15 and Figure 16 The first insulating portion 132A and the second insulating portion 132B are examples of the "multiple insulating portions" involved in the technology of this disclosure. The first connecting portion 134A and the second connecting portion 134B are examples of the "connecting portion" involved in the technology of this disclosure. Each insulating member 130 is formed of a heat-shrinkable tube with heat shrinkability.

[0103] In each insulating member 130, a first insulating portion 132A is inserted into one of the plurality of slots 28, and a second insulating portion 132B is inserted into the slot 28 adjacent to the slot 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 the slots 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" involved in 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" involved in the present disclosure.

[0104] The first insulating portion 132A extends along the Y and Z directions. When inserted into the insertion slot 28, the first insulating portion 132A is disposed between adjacent winding portions 18, insulating them from each other. Similarly, the second insulating portion 132B extends along the Y and Z directions. When inserted into the insertion slot 28, it is disposed between adjacent winding portions 18, insulating them from each other.

[0105] The first connecting portion 134A extends along the X and Y directions. The first connecting portion 134A is disposed on the arrow Z1 side of the winding portion 18, and connects the first ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z1 side to each other. Similarly, the second connecting portion 134B extends along the X and Y directions. The second connecting portion 134B is disposed on the arrow Z2 side of the winding portion 18, and connects the second ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z2 side to each other.

[0106] like Figure 17 As shown, the insulating member 130 is assembled from the front end side of the pole tooth portion 22 to the stator component 12. More specifically, the insulating member 130 is assembled to the outer periphery of the winding portion 18 in the stator component 12. When the insulating member 130 is heated by a heater or the like, the insulating member 130 shrinks, thereby mounting the insulating member 130 to the outer periphery of the winding portion 18.

[0107] With the insulating member 130 installed on the outer periphery of the winding portion 18, the first insulating portion 132A and the second insulating portion 132B are arranged along the axial extension portion (Z-direction extension) of the winding portion 18, and the first connecting portion 134A and the second connecting portion 134B are arranged along the tangential extension portion (X-direction extension) of the winding portion 18. Each insulating member 130 can be installed on the stator component 12 before the plurality of stator component 12 are assembled into a ring, or after the plurality of stator component 12 are assembled into a ring.

[0108] The first connecting portion 134A and the second connecting portion 134B have a plurality of through holes 136 extending along the Z direction (see reference). Figure 15 and Figure 16 The number of through holes 136 can be arbitrary. In addition, the first connecting part 134A and the second connecting part 134B may each have one through hole 136.

[0109] As detailed above, the stator 10 according to the third embodiment includes an insulating member 130. The insulating member 130 includes: a first insulating portion 132A, which is inserted into one of a plurality of slots 28; a second insulating portion 132B, which is inserted into a slot 28 adjacent to the slot into which the first insulating portion 132A is inserted; a first connecting portion 134A, which connects the first ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z1 side to each other; and a second connecting portion 134B, which connects the second ends of the first insulating portion 132A and the second insulating portion 132B on the arrow Z2 side to each other. Therefore, compared to the case where multiple independently structured insulating sheets are inserted one by one into each slot 28, the number of components and assembly time can be reduced, thus reducing costs.

[0110] Furthermore, each insulating member 130 is formed of a heat-shrinkable tube. Therefore, for example, by assembling the insulating member 130 from the front end side of the pole tooth portion 22 onto the outer periphery of the winding portion 18, and by heating the insulating member 130 with a heater or the like to shrink it, the insulating member 130 can be installed onto the outer periphery of the winding portion 18, thus improving workability during assembly.

[0111] Furthermore, the first connecting portion 134A is disposed on the arrow Z1 side of the winding portion 18 and has a plurality of through holes 136 extending along the Z direction. Similarly, the second connecting portion 134B is disposed on the arrow Z2 side of the winding portion 18 and has a plurality of through holes 136 extending along 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 136, thus suppressing the decrease in cooling performance of the winding portion 18.

[0112] [Fourth Implementation]

[0113] Next, the stator 10 according to the fourth embodiment will be described.

[0114] like Figure 18 and Figure 19As shown, the stator 10 in the fourth embodiment has a 10-pole, 12-slot structure with 10 magnetic poles and 12 slots 28. Multiple winding sections 18 include U-phase winding sections 18, V-phase winding sections 18, and W-phase winding sections 18. The U-phase winding sections 18 include U+-phase winding sections 18 and U-phase winding sections 18; the V-phase winding sections 18 include V+-phase winding sections 18 and V-phase winding sections 18; and the W-phase winding sections 18 include W+-phase winding sections 18 and W-phase winding sections 18.

[0115] The winding sections 18 of the U+ phase, V+ phase, and W+ phase are winding sections 18 wound in the forward direction. The winding sections 18 of the U- phase, V- phase, and W- phase are winding sections 18 wound in the reverse direction.

[0116] Multiple winding sections 18 are arranged in a clockwise direction in the following order: U+ phase winding section 18, U- phase winding section 18, W+ phase winding section 18, W- phase winding section 18, V+ phase winding section 18, V- phase winding section 18, U+ phase winding section 18, U- phase winding section 18, W+ phase winding section 18, W- phase winding section 18, V+ phase winding section 18, and V- phase winding section 18.

[0117] In the fourth embodiment, the structure of the plurality of insulating members 30 is changed from that of the first embodiment as follows: The plurality of insulating members 30 are installed every two relative to the plurality of stator constituent members 12. Each insulating member 30 is installed on two stator constituent members 12 (see also...). Figures 20 to 22 In each insulating member 30, the first insulating part 32A is inserted into one of the plurality of slots 28, and the second insulating part 32B is inserted into one of the plurality of slots 28, which is one slot away from the slot into which the first insulating part 32A is inserted. The slot 28 into which the first insulating part 32A is inserted is an example of the "selection slot" and "first selection slot" involved in the technology of this disclosure, and the slot 28 into which the second insulating part 32B is inserted is an example of the "selection slot" and "second selection slot" involved in the technology of this disclosure.

[0118] More specifically, the plurality of insulating members 30 include: a U-phase insulating member 30, which is mounted across the winding portion 18 of the U+ phase and the winding portion 18 of the U- phase; a V-phase insulating member 30, which is mounted across the winding portion 18 of the V+ phase and the winding portion 18 of the V- phase; and a W-phase insulating member 30, which is mounted across the winding portion 18 of the W+ phase and the winding portion 18 of the W- phase.

[0119] In the U-phase insulation member 30, the first insulation part 32A is disposed between the winding part 18 of the U+ phase and the winding part 18 of the V- phase, and the second insulation part 32B is disposed between the winding part 18 of the U- phase and the winding part 18 of the W+ phase.

[0120] In the V-phase insulation member 30, the first insulation part 32A is disposed between the V+ phase winding part 18 and the W- phase winding part 18, and the second insulation part 32B is disposed between the V- phase winding part 18 and the U+ phase winding part 18.

[0121] In the insulating member 30 of the W phase, the first insulating part 32A is disposed between the winding part 18 of the W+ phase and the winding part 18 of the U- phase, and the second insulating part 32B is disposed between the winding part 18 of the W- phase and the winding part 18 of the V+ phase.

[0122] Furthermore, in the fourth embodiment, neither the first insulating portion 32A nor the second insulating portion 32B is disposed between the winding portions 18 of the same phase. However, 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, so insulation is not required.

[0123] The connecting portion 34 has a plurality of through holes 36 extending along the Z direction, which is the same as in the first embodiment.

[0124] Thus, in the fourth embodiment, since the insulation between the winding portions 18 of the same phase is omitted, the cost can be reduced compared to the case where the winding portions 18 of the same phase are insulated from each other.

[0125] Furthermore, in the above description, the stator 10 is a 10-pole, 12-slot structure with 10 magnetic poles and 12 slots 28, but it can also be as follows: Figure 23 The diagram shows an 8-pole, 9-slot structure with 8 magnetic poles and 9 slots 28. The following describes a variation of the 8-pole, 9-slot stator 10 structure.

[0126] The U-phase winding section 18 has a U+ phase winding section 18, a U- phase winding section 18, and a U+ phase winding section 18; the V-phase winding section 18 has a V+ phase winding section 18, a V- phase winding section 18, and a V+ phase winding section 18; the W-phase winding section 18 has a W+ phase winding section 18, a W- phase winding section 18, and a W+ phase winding section 18.

[0127] Multiple winding sections 18 are arranged in a clockwise direction in the following order: U+ phase winding section 18, U- phase winding section 18, U+ phase winding section 18, W+ phase winding section 18, W- phase winding section 18, W+ phase winding section 18, V+ phase winding section 18, V- phase winding section 18, and V+ phase winding section 18.

[0128] Each insulating component 30 is installed on one of the three stator components 12 (see also) Figures 24 to 26 In each insulating member 30, the first insulating part 32A is inserted into one of the plurality of slots 28, and the second insulating part 32B is inserted into one of the plurality of slots 28, which is two slots away from the slot 28 into which the first insulating part 32A is inserted.

[0129] The plurality of insulating members 30 include: a U-phase insulating member 30, which is installed across the winding portion 18 of the U+ phase, the winding portion 18 of the U- phase, and the winding portion 18 of the U+ phase; a V-phase insulating member 30, which is installed across the winding portion 18 of the V+ phase, the winding portion 18 of the V- phase, and the winding portion 18 of the V+ phase; and a W-phase insulating member 30, which is installed across the winding portion 18 of the W+ phase, the winding portion 18 of the W- phase, and the winding portion 18 of the W+ phase.

[0130] In the U-phase insulation member 30, the first insulation part 32A is disposed between the winding part 18 of the U+ phase and the winding part 18 of the V+ phase, and the second insulation part 32B is disposed between the winding part 18 of the U+ phase and the winding part 18 of the W+ phase.

[0131] In the V-phase insulation member 30, the first insulation part 32A is disposed between the V+ phase winding part 18 and the W+ phase winding part 18, and the second insulation part 32B is disposed between the V+ phase winding part 18 and the U+ phase winding part 18.

[0132] In the insulating member 30 of the W phase, the first insulating part 32A is inserted into the slot 28 located between the winding part 18 of the W+ phase and the winding part 18 of the U+ phase, and the second insulating part 32B is disposed in the slots 28 between the winding part 18 of the W+ phase and the winding part 18 of the V+ phase.

[0133] Furthermore, in this modified example, neither the first insulating part 32A nor the second insulating part 32B is disposed between the winding parts 18 of the same phase. However, the potential difference between the winding parts 18 of the same phase is smaller than the potential difference between the winding parts 18 of different phases, so insulation is not required.

[0134] Thus, in this modified example, since the insulation between the winding portions 18 of the same phase is omitted, the cost can be reduced compared to the case where the winding portions 18 of the same phase are insulated.

[0135] In addition, it can also be like Figure 27 and Figure 28 As shown, similarly to the second embodiment, a first protrusion 54A extending toward the second insulating portion 32B is formed at the first front end portion 52A of the first insulating portion 32A, and a second protrusion 54B extending toward the first insulating portion 32A is formed at the second front end portion 52B of the second insulating portion 32B. With this configuration, it is possible to prevent the insulating member 30 from disengaging from the stator component 12 toward the arrow Z1 side.

[0136] In addition, it can also be like Figure 29 and Figure 30 As shown, in the fourth embodiment, the heat-shrinkable tube, i.e., the insulating member 130, which has heat shrinkability as described in the third embodiment, is used instead of each insulating member 30.

[0137] [Fifth Implementation]

[0138] Next, the stator 10 according to the fifth embodiment will be described.

[0139] like Figure 31 and Figure 32 As shown, in the fifth embodiment, compared to the first embodiment, a single insulating member 230 is used instead of multiple insulating members 30 (see Figure 1). Figure 2 and Figure 3 The insulating member 230 has multiple insulating portions 232 and connecting portions 234 (see also) Figure 33 and Figure 34 The insulating member 230 is formed, for example, from a sheet-like member made of an insulating resin.

[0140] The number of insulating portions 232 is the same as the number of slots 28, and the insulating portions 232 are inserted one by one into each slot 28. The slots 28 for inserting the insulating portions 232 are an example of the "selection slots" disclosed herein. Each insulating portion 232 extends along the Y and Z directions. Each insulating portion 232, when inserted into the slot 28, is disposed between adjacent winding portions 18, and insulates the adjacent winding portions 18 from each other. A connecting portion 234 is formed in a ring shape along the circumference of the stator core portion 24. The connecting portion 234 is disposed on the arrow Z1 side of the multiple winding portions 18 and connects the ends of the multiple insulating portions 232 on the arrow Z1 side.

[0141] After the multiple stator constituent members 12 are assembled into a ring, the insulating member 230 is installed on the multiple stator constituent members 12 from the arrow Z1 side. With the insulating member 230 installed on the multiple stator constituent members 12, each insulating portion 232 is arranged along the portion extending in the Z direction of the winding portion 18, i.e., the axial extension portion, and the connecting portion 234 is arranged along the portion extending in the X direction of the winding portion 18, i.e., the tangential extension portion.

[0142] The connecting portion 234 has a plurality of through holes 236 extending along the Z direction, which is the same as in the first embodiment.

[0143] Thus, 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 an insulating member 230. Therefore, compared with the case of using multiple insulating members 30, the number of parts and assembly time can be reduced, thereby reducing costs.

[0144] [Sixth Implementation Method]

[0145] Next, the stator 10 according to the sixth embodiment will be described.

[0146] In the sixth embodiment, the structure of the insulating member 230 is changed compared to the fifth embodiment as follows. That is, as... Figure 35 and Figure 36 As shown, each insulating part 232 is bent into a V-shape when viewed from the Z direction. Each insulating part 232 is bent into a V-shape along its entire length in the Z direction.

[0147] Thus, in the sixth embodiment, each insulating portion 232 is bent into a V-shape when viewed from the Z direction. Therefore, since the rigidity of each insulating portion 232 is increased due to its double structure, breakage or deformation of each insulating portion 232 can be suppressed when the insulating member 230 is mounted to the plurality of stator constituent members 12 from the arrow Z1 side. Furthermore, the increased thickness of each insulating portion 232 due to its double structure improves insulation performance.

[0148] [Seventh Implementation]

[0149] Next, the stator 10 according to the seventh embodiment will be described.

[0150] In the seventh embodiment, the structure of the insulating member 230 is changed compared to the sixth embodiment as follows. That is, as... Figures 37 to 39 As shown, the connecting portion 234 is formed in a cylindrical shape along the circumference of the stator core portion 24 and is disposed on the radially inner side of the stator core portion 24. Each insulating portion 232 extends from the connecting portion 234 to the radially outer side of the stator core portion 24.

[0151] Furthermore, 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 along its entire length in the Z direction.

[0152] Thus, in the seventh embodiment, the connecting portion 234 is formed in a cylindrical shape along the circumference of the stator core portion 24 and is disposed radially inside the stator core portion 24. Furthermore, each insulating portion 232 extends radially outside the stator core portion 24 from the connecting portion 234. Therefore, compared to the case where the connecting portion 234 is disposed on one axial side of the stator 10, the axial length of the stator 10 can be shortened.

[0153] Furthermore, in the seventh embodiment, each insulating portion 232 is also bent into a V-shape when viewed from the Z direction. Therefore, since the rigidity of each insulating portion 232 is increased due to its double structure, breakage or deformation of each insulating portion 232 can be suppressed when the insulating member 230 is mounted to the plurality of stator constituent members 12 from the arrow Z1 side. Furthermore, since the thickness of each insulating portion 232 is increased due to its double structure, insulation performance can be improved.

[0154] [Eighth Implementation]

[0155] Next, the stator 10 according to the eighth embodiment will be described.

[0156] like Figure 40 and Figure 41 As shown, the stator 10 in the eighth embodiment is the same as that in the fourth embodiment, having 10 poles and 12 slots (10 poles, 12 slots). In the eighth embodiment, compared to the fourth embodiment, a single insulating member 230 is used instead of multiple insulating members 30 (see Figure 1). Figure 18 and Figure 19 The insulating member 230 has multiple insulating portions 232 and connecting portions 234 (see also) Figure 42 and Figure 43 The insulating member 230 is formed, for example, from a sheet-like member made of an insulating resin.

[0157] The number of insulating portions 232 is half the number of slots 28, and the insulating portions 232 are inserted piece by piece into half of the slots 28. The slots 28 into which the insulating portions 232 are inserted are an example of the "selection slots" disclosed herein. Each insulating portion 232 extends along the Y and Z directions. Each insulating portion 232, when inserted into a slot 28, is disposed between adjacent winding portions 18, and insulates adjacent winding portions 18 from each other. A connecting portion 234 is formed in a ring shape along the circumference of the stator core portion 24. The connecting portion 234 is disposed on the arrow Z1 side of the multiple winding portions 18 and connects the ends of the multiple insulating portions 232 on the arrow Z1 side.

[0158] After the multiple stator constituent members 12 are assembled into a ring, the insulating member 230 is installed on the multiple stator constituent members 12 from the arrow Z1 side. With the insulating member 230 installed on the multiple stator constituent members 12, each insulating portion 232 is arranged along the portion extending in the Z direction of the winding portion 18, i.e., the axial extension portion, and the connecting portion 234 is arranged along the portion extending in the X direction of the winding portion 18, i.e., the tangential extension portion.

[0159] The connecting portion 234 has a plurality of through holes 236 extending along the Z direction, which is the same as in the first embodiment.

[0160] More specifically, multiple insulating portions 232 are respectively disposed between the winding portion 18 of the U+ phase and the winding portion 18 of the V- phase, between the winding portion 18 of the U- phase and the winding portion 18 of the W+ phase, between the winding portion 18 of the V+ phase and the winding portion 18 of the W- phase, between the winding portion 18 of the V- phase and the winding portion 18 of the U+ phase, between the winding portion 18 of the W+ phase and the winding portion 18 of the U- phase, and between the winding portion 18 of the W- phase and the winding portion 18 of the V+ phase.

[0161] Furthermore, in the eighth embodiment, the insulating portion is not disposed between the winding portions 18 of the same phase. However, 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, so insulation is not required.

[0162] The connecting portion 234 has a plurality of through holes 236 extending along the Z direction, which is the same as in the first embodiment.

[0163] Thus, in the eighth embodiment, since the insulation between the winding portions 18 of the same phase is omitted, the cost can be reduced compared to the case where the winding portions 18 of the same phase are insulated from each other.

[0164] Furthermore, the connecting portion 234 is formed in a ring shape, and the multiple insulating portions 232 and the connecting portion 234 constitute an insulating member 230. Therefore, compared with the case of using multiple insulating members 30, the number of parts and assembly time can be reduced, thereby reducing costs.

[0165] Furthermore, in the above description, the stator 10 is a 10-pole, 12-slot structure with 10 magnetic poles and 12 slots 28, but it can also be as follows: Figure 44 As shown, this is an 8-pole, 9-slot structure with 8 magnetic poles and 9 slots 28. Furthermore, multiple insulating portions 232 (see also...) Figure 45 and Figure 46Alternatively, they can be respectively configured between the winding section 18 of the U+ phase and the winding section 18 of the V+ phase, between the winding section 18 of the U+ phase and the winding section 18 of the W+ phase, and between the winding section 18 of the V+ phase and the winding section 18 of the W+ phase.

[0166] In addition, in this modified example, the insulating portion 232 is not disposed between the winding portions 18 of the same phase. However, 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, so insulation is not required.

[0167] Thus, in this modified example, since the insulation between the winding portions 18 of the same phase is also omitted, the cost can be reduced compared to the case where the winding portions 18 of the same phase are insulated.

[0168] In addition, it can also be like Figure 47 and Figure 48 As shown, each insulating part 232 is bent into a V-shape when viewed from the Z direction. Furthermore, each insulating part 232 can also be bent into a V-shape along its entire length in the Z direction.

[0169] Thus, when each insulating portion 232 is bent into a V-shape when viewed from the Z direction, the rigidity of each insulating portion 232 is increased due to its double structure. Therefore, when the insulating member 230 is installed on the multiple stator constituent members 12 from the arrow Z1 side, breakage or deformation of each insulating portion 232 can be prevented. Furthermore, since the thickness of each insulating portion 232 is increased due to its double structure, insulation performance can be improved.

[0170] In addition, it can also be like Figure 49 and Figure 50 As shown, the connecting portion 234 extends along the aforementioned stator core portion 24 (refer to...). Figure 37 The insulating portions (e.g., circumferentially formed into a cylindrical shape) are disposed radially inside the stator core 24. Furthermore, each insulating portion 232 may extend radially outward from the connecting portion 234 towards the stator core 24. Moreover, each insulating portion 232 may be bent into a V-shape when viewed from the Z-direction. Additionally, each insulating portion 232 may be bent into a V-shape along its entire length in the Z-direction.

[0171] Thus, when the connecting portion 234 is formed into a cylindrical shape along the circumference of the stator core portion 24 and is disposed on the radial inner side of the stator core portion 24, and each insulating portion 232 extends from the connecting portion 234 to the radial outer side of the stator core portion 24, the axial length of the stator 10 can be shortened compared to the case where the connecting portion 234 is disposed on the axial side of the stator 10.

[0172] Furthermore, each insulating portion 232 is bent into a V-shape when viewed from the Z direction. Therefore, because each insulating portion 232 has a double structure, its rigidity is increased, thus preventing breakage or deformation of each insulating portion 232 when the insulating member 230 is mounted to the multiple stator constituent members 12 from the arrow Z1 side. Moreover, because each insulating portion 232 has a double structure, its thickness is increased, thereby improving insulation performance.

[0173] [Ninth Implementation]

[0174] Next, the stator 10 according to the ninth embodiment will be described.

[0175] like Figure 51 As shown, in the ninth embodiment, compared to the first embodiment, a single insulating member 330 is used instead of multiple insulating members 30 (see Figure 1). Figure 2 and Figure 3 The insulating member 330 has a plurality of first insulating portions 332A, a plurality of second insulating portions 332B, a plurality of first connecting portions 334A, and a plurality of second connecting portions 334B (see also) Figure 52 and Figure 53 The first insulating portion 332A and the second insulating portion 332B are examples of the "multiple insulating portions" involved in the technology of this disclosure. The first connecting portion 334A and the second connecting portion 334B are examples of the "connecting portion" involved in the technology of this disclosure.

[0176] The insulating member 330 is configured such that a first insulating portion 332A, a second insulating portion 332B, a first connecting portion 334A, and a second connecting portion 334B are repeatedly connected in the order of the first insulating portion 332A, the first connecting portion 334A, the second insulating portion 332B, and the second connecting portion 334B. The insulating member 330 is formed, for example, from a sheet-like member made of resin with insulating properties.

[0177] The total number of the plurality of first insulating portions 332A and the plurality of second insulating portions 332B is the same as the number of the plurality of slots 28. The plurality of first insulating portions 332A and the plurality of second insulating portions 332B are alternately inserted into each slot 28. That is, each first insulating portion 332A is inserted into one of the plurality of slots 28, and each second insulating portion 332B is inserted into the 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" involved in the technology of this 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" involved in the technology of this disclosure.

[0178] The first insulating portion 332A extends along the Y and Z directions. When inserted into the insertion slot 28, the first insulating portion 332A is disposed between adjacent winding portions 18, insulating them from each other. Similarly, the second insulating portion 332B extends along the Y and Z directions. When inserted into the insertion slot 28, it is disposed between adjacent winding portions 18, insulating them from each other.

[0179] The first connecting portion 334A extends along the X and Y directions. The first connecting portion 334A is disposed on the arrow Z1 side of the winding portion 18, and connects the arrow Z1 side end of the first insulating portion 332A to the arrow Z1 side end of the second insulating portion 332B adjacent to one side of the first insulating portion 332A. The second connecting portion 334B extends along the X and Y directions. The second connecting portion 334B is disposed on the arrow Z2 side of the winding portion 18, and connects the arrow Z2 side end of the first insulating portion 332A to the arrow Z2 side end of the second insulating portion 332B adjacent to the other side of the first insulating portion 332A.

[0180] The insulating member 330 is mounted on the stator constituent members 12 from the front end side of the aforementioned pole tooth portion 22, with the plurality of stator constituent members 12 arranged in a straight line. After the insulating member 330 is mounted, the plurality of stator constituent members 12 form a ring. The insulator 16 of adjacent stator constituent members 12 (see reference) Figure 1 They can also be connected to each other. When the insulating member 330 is installed on the plurality of stator constituent members 12, the first insulating part 332A and the second insulating part 332B are arranged along the portion extending in the Z direction in the winding part 18, i.e., the axial extension portion, and the first connecting part 334A and the second connecting part 334B are arranged along the portion extending in the X direction in the winding part 18, i.e., the tangential extension portion.

[0181] The first connecting portion 334A and the second connecting portion 334B have a plurality of through holes 336 extending along the Z direction, which is the same as in the first embodiment.

[0182] Thus, 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 connected in the order of the first insulating portion 332A, the first connecting portion 334A, the second insulating portion 332B, and the second connecting portion 334B, thereby constituting an insulating member 330. Therefore, compared with the case of using multiple insulating members 330, the number of parts and assembly time can be reduced, thereby reducing costs.

[0183] [Tenth Implementation]

[0184] Next, the stator 10 according to the tenth embodiment will be described.

[0185] like Figure 54 As shown, the stator 10 in the tenth embodiment is the same as that in the fourth embodiment, having 10 poles and 12 slots (10 poles, 12 slots). In the tenth embodiment, the structure of the insulating member 330 is changed from that in the ninth embodiment as follows (see also...). Figure 55 and Figure 56 ).

[0186] That is, the insulating member 330 has: an insulating mounting portion 330U for the U phase, which is mounted across the winding portion 18 of the U+ phase and the winding portion 18 of the U- phase; an insulating mounting portion 330V for the V phase, which is mounted across the winding portion 18 of the V+ phase and the winding portion 18 of the V- phase; and an insulating mounting portion 330W for the W phase, which is mounted across the winding portion 18 of the W+ phase and the winding portion 18 of the W- phase.

[0187] In the U-phase insulation mounting portion 330U, the first insulation portion 332A is disposed between the winding portion 18 of the U+ phase and the winding portion 18 of the V- phase, and the second insulation portion 332B is disposed between the winding portion 18 of the U- phase and the winding portion 18 of the W+ phase.

[0188] In the V-phase insulation mounting portion 330V, the first insulation portion 332A is disposed between the V+ phase winding portion 18 and the W- phase winding portion 18, and the second insulation portion 332B is disposed between the V- phase winding portion 18 and the U+ phase winding portion 18.

[0189] In the insulation mounting section 330W of the W phase, the first insulation section 332A is disposed between the winding section 18 of the W+ phase and the winding section 18 of the U- phase, and the second insulation section 332B is disposed between the winding section 18 of the W- phase and the winding section 18 of the V+ phase.

[0190] Furthermore, in the tenth embodiment, neither the first insulating portion 332A nor the second insulating portion 332B is disposed between the winding portions 18 of the same phase. However, 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, so insulation is not required.

[0191] The first connecting portion 334A and the second connecting portion 334B have a plurality of through holes 336 extending along the Z direction, which is the same as in the first embodiment.

[0192] Thus, in the tenth embodiment, since the insulation between the winding portions 18 of the same phase is omitted, the cost can be reduced compared to the case where the winding portions 18 of the same phase are insulated from each other.

[0193] [Eleventh Implementation Method]

[0194] Next, the stator 10 according to the eleventh embodiment will be described.

[0195] like Figure 57 As shown, the stator 10 according to the eleventh embodiment is similar to the first variation of the eighth embodiment (see reference). Figure 44 Similarly, it is an 8-pole, 9-slot structure with 8 magnetic poles and 9 slots 28. In the eleventh embodiment, compared with the first variation of the eighth embodiment, insulating member 430 is used instead of insulating member 230 (see also...). Figure 58 and Figure 59 ).

[0196] The insulating member 430 has a plurality of insulating portions 432, a plurality of first connecting portions 434A, and a plurality of second connecting portions 434B. The plurality of first connecting portions 434A and second connecting portions 434B are examples of "connecting portions" involved in the present disclosure. The number of the plurality of first connecting portions 434A is two. The plurality of insulating portions 432 are respectively disposed between the winding portion 18 of the U+ phase and the winding portion 18 of the V+ phase, between the winding portion 18 of the U+ phase and the winding portion 18 of the W+ phase, and between the winding portion 18 of the V+ phase and the winding portion 18 of the W+ phase.

[0197] Each first connecting portion 434A is disposed on the arrow Z1 side of the winding portion 18 and connects the first ends of the adjacent insulating portions 432 on the arrow Z1 side to each other. The second connecting portion 434B is disposed on the arrow Z2 side of the winding portion 18 and connects the second ends of the adjacent insulating portions 432 on the arrow Z2 side to each other.

[0198] Furthermore, in the eleventh embodiment, the insulating portion is not disposed between the winding portions 18 of the same phase. However, 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, so insulation is not required.

[0199] The first connecting portion 434 and the second connecting portion 434 have a plurality of through holes 436 extending along the Z direction, which is the same as in the first embodiment.

[0200] Thus, in the eleventh embodiment, since the insulation between the winding portions 18 of the same phase is omitted, the cost can be reduced compared to the case where the winding portions 18 of the same phase are insulated from each other.

[0201] Furthermore, among the above-described multiple embodiments (including variations), the embodiments that can be combined can also be appropriately combined.

[0202] The above describes one embodiment of the present disclosure, but the present disclosure is not limited to the above. Various modifications and implementations can be made without departing from its spirit.

[0203] The following are notes relating to this disclosure.

[0204] (Note 1)

[0205] A stator (10) includes: The stator core (24) has a plurality of radially extending pole teeth (22) and a plurality of grooves (28) formed between the plurality of pole teeth. An insulator (16) is mounted on the stator core; Multiple winding portions (18) are wound around the multiple pole teeth with respect to the insulator; and An insulating member (30, 130, 230, 330, 430) has multiple insulating portions (32A, 32B, 132A, 132B, 232, 332A, 332B, 432) and connecting portions (34, 134A, 134B, 234, 334A, 334B, 434A, 434B), wherein the multiple insulating portions are inserted into multiple selector slots of the multiple slots and insulate adjacent winding portions of the multiple winding portions, and the connecting portions connect the multiple insulating portions.

[0206] (Note 2)

[0207] According to the stator described in Appendix 1, wherein, Includes multiple insulating components (30). Each of the insulating members has a first insulating portion (32A) and a second insulating portion (32B) as a plurality of the insulating portions. The first insulating part is inserted into the first selection slot among the plurality of selection slots. The second insulating part is inserted into the second selection slot among the plurality of selection slots. The connecting part (34) connects the ends of the first insulating part and the second insulating part on one side of the stator core in the axial direction.

[0208] (Note 3)

[0209] According to the stator described in Appendix 2, wherein, The second selection slot is the slot adjacent to the first selection slot.

[0210] (Note 4)

[0211] According to the stator described in Appendix 2 or Appendix 3, wherein, The first insulating portion (32A) has a first front end portion (52A) located on the opposite side of the connecting portion. The second insulating portion (32B) has a second front end portion (52B) located on the opposite side of the connecting portion. The connecting part (34) is disposed on one side of the winding part along the axial direction of the stator core. A first protrusion (54A) is formed at the first front end portion. The first protrusion is disposed on the other side of the winding portion in the axial direction of the stator core portion and extends toward the second insulation portion side. A second protrusion (54B) is formed at the second front end. The second protrusion is disposed on the other side of the winding portion in the axial direction of the stator core and extends toward the first insulation portion.

[0212] (Note 5)

[0213] According to the stator described in Appendix 1, wherein, Includes multiple insulating components (130). Each of the insulating members is a heat-shrinkable tube and has: a first insulating part (132A) and a second insulating part (132B) as the plurality of insulating parts; and a first connecting part (134A) and a second connecting part (134B) as the connecting parts. The first insulating part is inserted into the first selection slot among the plurality of selection slots. The second insulating part is inserted into the second selection slot among the plurality of selection slots. The first connecting portion connects the first insulating portion and the first end of the second insulating portion to each other. The second connecting portion connects the first insulating portion and the second end of the second insulating portion to each other.

[0214] (Note 6)

[0215] According to the stator described in Appendix 1, wherein, Includes multiple insulating components (30). The plurality of winding sections include multiple winding sections of U phase, multiple winding sections of V phase, and multiple winding sections of W phase. The plurality of insulating members include: an insulating member for the U phase, mounted across the plurality of winding portions of the U phase; an insulating member for the V phase, mounted across the plurality of winding portions of the V phase; and an insulating member for the W phase, mounted across the plurality of winding portions of the W phase. The insulating member of the U phase, the insulating member of the V phase, and the insulating member of the W phase each have a first insulating part (32A) and a second insulating part (32B) as a plurality of insulating parts. In the insulating member of phase U, the first insulating portion is disposed between the winding portion of phase U and the winding portion of phase V, and the second insulating portion is disposed between the winding portion of phase U and the winding portion of phase W. In the insulating member of phase V, the first insulating portion is disposed between the winding portion of phase V and the winding portion of phase W, and the second insulating portion is disposed between the winding portion of phase V and the winding portion of phase U. In the insulating member of phase W, the first insulating portion is disposed between the winding portion of phase W and the winding portion of phase U, and the second insulating portion is disposed between the winding portion of phase W and the winding portion of phase V.

[0216] (Note 7)

[0217] According to the stator described in Appendix 1, wherein, The connecting portion (234) is formed in a ring shape along the circumference of the stator core.

[0218] (Postscript 8)

[0219] According to the stator described in Appendix 1 or Appendix 7, wherein, The insulating component (230) is formed of sheet material. Each of the insulating portions (232) is bent into a V-shape when viewed from the axial direction of the stator core.

[0220] (Note 9)

[0221] According to the stator described in Appendix 1, wherein, The connecting portion (230) is formed in a cylindrical shape along the circumference of the stator core and is disposed on the radial inner side of the stator core. Each of the insulating portions (232) extends radially outward from the connecting portion toward the stator core.

[0222] (Postscript 10)

[0223] According to the stator described in Appendix 1 or Appendix 9, wherein, The insulating component (230) is formed of sheet material. Each of the insulating portions (232) is bent into a V-shape when viewed from the axial direction of the stator core.

[0224] (Postscript 11)

[0225] According to the stator described in Appendix 1, wherein, The plurality of winding sections include multiple winding sections of U phase, multiple winding sections of V phase, and multiple winding sections of W phase. The plurality of insulating portions (232) are respectively disposed between the winding portion of the U phase and the winding portion of the V phase, between the winding portion of the U phase and the winding portion of the W phase, and between the winding portion of the V phase and the winding portion of the W phase. The connecting portion (234) is formed in a ring shape along the circumference of the stator core.

[0226] (Postscript 12)

[0227] According to the stator described in Appendix 1, wherein, The insulating member (330) is configured such that a first insulating portion (332A) and a second insulating portion (332B), which are the plurality of insulating portions, and a first connecting portion (334A) and a second connecting portion (334B), which are the connecting portions, are repeatedly connected in the order of the first insulating portion, the first connecting portion, the second insulating portion, and the second connecting portion. The first insulating part is inserted into the first selection slot among the plurality of selection slots. The second insulating part is inserted into the second selection slot, which is adjacent to the first selection slot, among the plurality of selection slots. The first connecting portion is disposed on one side of the winding portion along the axial direction of the stator core. The second connecting portion is disposed on the other side of the winding portion along the axial direction of the stator core.

[0228] (Postscript 13)

[0229] According to the stator described in Appendix 1, wherein, The plurality of winding sections include multiple winding sections of U phase, multiple winding sections of V phase, and multiple winding sections of W phase. The insulating member (330) is configured such that a first insulating portion (332A) and a second insulating portion (332B), which are the plurality of insulating portions, and a first connecting portion (334A) and a second connecting portion (334B), which are the connecting portions, are repeatedly connected 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: an insulating mounting portion (330U) for the U phase, which is mounted across the plurality of winding portions of the U phase; an insulating mounting portion (330V) for the V phase, which is mounted across the plurality of winding portions of the V phase; and an insulating mounting portion (330W) for the W phase, which is mounted across the plurality of winding portions of the W phase. The insulating mounting portion of the U phase, the insulating mounting portion of the V phase, and the insulating mounting portion of the W phase each have a first insulating portion (332A) and a second insulating portion (332B) that are multiple insulating portions. In the insulating mounting portion of phase U, the first insulating portion is disposed between the winding portion of phase U and the winding portion of phase V, and the second insulating portion is disposed between the winding portion of phase U and the winding portion of phase W. In the insulating mounting portion of phase V, the first insulating portion is disposed between the winding portion of phase V and the winding portion of phase W, and the second insulating portion is disposed between the winding portion of phase V and the winding portion of phase U. In the insulating mounting portion of phase W, the first insulating portion is disposed between the winding portion of phase W and the winding portion of phase U, and the second insulating portion is disposed between the winding portion of phase W and the winding portion of phase V.

[0230] (Postscript 14)

[0231] According to the stator described in Appendix 1, wherein, The plurality of winding sections include multiple winding sections of U phase, multiple winding sections of V phase, and multiple winding sections of W phase. The plurality of insulating portions (432) are respectively disposed between the winding portion of the U phase and the winding portion of the V phase, between the winding portion of the U phase and the winding portion of the W phase, and between the winding portion of the V phase and the winding portion of the W phase. The insulating member (430) has a first connecting portion (434A) and a second connecting portion (434B) as the connecting portion. The first connecting portion is disposed on one side of the winding portion along the axial direction of the stator core, and connects the first ends of adjacent insulating portions among the plurality of insulating portions to each other. The second connecting portion is disposed on the other side of the winding portion in the axial direction of the stator core, and connects the second ends of adjacent insulating portions among the plurality of insulating portions to each other.

[0232] (Postscript 15)

[0233] The stator according to any one of Annexes 1 to 14, wherein, The connecting portion is disposed on one side of the winding portion along the axial direction of the stator core, and has a through hole (36, 136, 236, 336, 436) extending along the axial direction of the stator core.

Claims

1. A stator (10), comprising: The stator core (24) has a plurality of radially extending pole teeth (22) and a plurality of grooves (28) formed between the plurality of pole teeth. An insulator (16) is mounted on the stator core; Multiple winding portions (18) are wound around the multiple pole teeth with respect to the insulator; as well as An insulating member (30, 130, 230, 330, 430) has multiple insulating portions (32A, 32B, 132A, 132B, 232, 332A, 332B, 432) and connecting portions (34, 134A, 134B, 234, 334A, 334B, 434A, 434B), wherein the multiple insulating portions are inserted into multiple selector slots of the multiple slots and insulate adjacent winding portions of the multiple winding portions, and the connecting portions connect the multiple insulating portions.

2. The stator according to claim 1, characterized in that, Includes multiple insulating components (30). Each of the insulating members has a first insulating portion (32A) and a second insulating portion (32B) as a plurality of the insulating portions. The first insulating part is inserted into the first selection slot among the plurality of selection slots. The second insulating part is inserted into the second selection slot among the plurality of selection slots. The connecting part (34) connects the ends of the first insulating part and the second insulating part on one side of the stator core in the axial direction.

3. The stator according to claim 2, characterized in that, The second selection slot is the slot adjacent to the first selection slot.

4. The stator according to claim 2 or 3, characterized in that, The first insulating portion (32A) has a first front end portion (52A) located on the opposite side of the connecting portion. The second insulating portion (32B) has a second front end portion (52B) located on the opposite side of the connecting portion. The connecting part (34) is disposed on one side of the winding part along the axial direction of the stator core. A first protrusion (54A) is formed at the first front end portion. The first protrusion is disposed on the other side of the winding portion in the axial direction of the stator core portion and extends toward the second insulation portion side. A second protrusion (54B) is formed at the second front end. The second protrusion is disposed on the other side of the winding portion in the axial direction of the stator core and extends toward the first insulation portion.

5. The stator according to claim 1, characterized in that, Includes multiple insulating components (130). Each of the insulating members is a heat-shrinkable tube and has: a first insulating part (132A) and a second insulating part (132B) as the plurality of insulating parts; and a first connecting part (134A) and a second connecting part (134B) as the connecting parts. The first insulating part is inserted into the first selection slot among the plurality of selection slots. The second insulating part is inserted into the second selection slot among the plurality of selection slots. The first connecting portion connects the first insulating portion and the first end of the second insulating portion to each other. The second connecting portion connects the first insulating portion and the second end of the second insulating portion to each other.

6. The stator according to claim 1, characterized in that, Includes multiple insulating components (30). The plurality of winding sections include multiple winding sections of U phase, multiple winding sections of V phase, and multiple winding sections of W phase. The plurality of insulating members include: an insulating member for the U phase, mounted across the plurality of winding portions of the U phase; an insulating member for the V phase, mounted across the plurality of winding portions of the V phase; and an insulating member for the W phase, mounted across the plurality of winding portions of the W phase. The insulating member of the U phase, the insulating member of the V phase, and the insulating member of the W phase each have a first insulating part (32A) and a second insulating part (32B) as a plurality of insulating parts. In the insulating member of phase U, the first insulating portion is disposed between the winding portion of phase U and the winding portion of phase V, and the second insulating portion is disposed between the winding portion of phase U and the winding portion of phase W. In the insulating member of phase V, the first insulating portion is disposed between the winding portion of phase V and the winding portion of phase W, and the second insulating portion is disposed between the winding portion of phase V and the winding portion of phase U. In the insulating member of phase W, the first insulating portion is disposed between the winding portion of phase W and the winding portion of phase U, and the second insulating portion is disposed between the winding portion of phase W and the winding portion of phase V.

7. The stator according to claim 1, characterized in that, The connecting portion (234) is formed in a ring shape along the circumference of the stator core.

8. The stator according to claim 1 or 7, characterized in that, The insulating component (230) is formed of sheet material. Each of the insulating portions (232) is bent into a V-shape when viewed from the axial direction of the stator core.

9. The stator according to claim 1, characterized in that, The connecting portion (230) is formed in a cylindrical shape along the circumference of the stator core and is disposed on the radial inner side of the stator core. Each of the insulating portions (232) extends radially outward from the connecting portion toward the stator core.

10. The stator according to claim 1, characterized in that, The plurality of winding sections include multiple winding sections of U phase, multiple winding sections of V phase, and multiple winding sections of W phase. The plurality of insulating portions (232) are respectively disposed between the winding portion of the U phase and the winding portion of the V phase, between the winding portion of the U phase and the winding portion of the W phase, and between the winding portion of the V phase and the winding portion of the W phase. The connecting portion (234) is formed in a ring shape along the circumference of the stator core.

11. The stator according to claim 1, characterized in that, The insulating member (330) is configured such that a first insulating portion (332A) and a second insulating portion (332B), which are the plurality of insulating portions, and a first connecting portion (334A) and a second connecting portion (334B), which are the connecting portions, are repeatedly connected in the order of the first insulating portion, the first connecting portion, the second insulating portion, and the second connecting portion. The first insulating part is inserted into the first selection slot among the plurality of selection slots. The second insulating part is inserted into the second selection slot, which is adjacent to the first selection slot, among the plurality of selection slots. The first connecting portion is disposed on one side of the winding portion along the axial direction of the stator core. The second connecting portion is disposed on the other side of the winding portion along the axial direction of the stator core.

12. The stator according to claim 1, characterized in that, The plurality of winding sections include multiple winding sections of U phase, multiple winding sections of V phase, and multiple winding sections of W phase. The insulating member (330) is configured such that a first insulating portion (332A) and a second insulating portion (332B), which are the plurality of insulating portions, and a first connecting portion (334A) and a second connecting portion (334B), which are the connecting portions, are repeatedly connected 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: an insulating mounting portion (330U) for the U phase, which is mounted across the plurality of winding portions of the U phase; an insulating mounting portion (330V) for the V phase, which is mounted across the plurality of winding portions of the V phase; and an insulating mounting portion (330W) for the W phase, which is mounted across the plurality of winding portions of the W phase. The insulating mounting portion of the U phase, the insulating mounting portion of the V phase, and the insulating mounting portion of the W phase each have a first insulating portion (332A) and a second insulating portion (332B) that are multiple insulating portions. In the insulating mounting portion of phase U, the first insulating portion is disposed between the winding portion of phase U and the winding portion of phase V, and the second insulating portion is disposed between the winding portion of phase U and the winding portion of phase W. In the insulating mounting portion of phase V, the first insulating portion is disposed between the winding portion of phase V and the winding portion of phase W, and the second insulating portion is disposed between the winding portion of phase V and the winding portion of phase U. In the insulating mounting portion of phase W, the first insulating portion is disposed between the winding portion of phase W and the winding portion of phase U, and the second insulating portion is disposed between the winding portion of phase W and the winding portion of phase V.

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

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

Images