JP7397708B2 - Device - Google Patents

Description

The present invention relates to an apparatus.

Patent Document 1 discloses a rotating electrical machine that can be applied to hybrid vehicles and electric vehicles.

JP 2019-41454 Publication

In a rotating electric machine, the stator coil serves as the heating element. In order to cool the stator, a method can be considered in which the stator is directly cooled by jetting a refrigerant liquid (for example, oil, etc.) to the stator. According to this method, the stator can be efficiently cooled.

However, even in this case, there is room for improvement in the cooling of the stator by the jetted refrigerant liquid, and it is desired to further improve the cooling efficiency of the stator.

The present invention has been made in view of such problems, and an object of the present invention is to improve the cooling efficiency of the stator when using a method of directly cooling the stator with jetted refrigerant liquid.

An apparatus according to an aspect of the present invention is a rotating electrical machine including a stator having a plurality of insulators, wherein the plurality of insulators include a rotating electrical machine including a first insulator and a second insulator, and a rotating electrical machine including a first insulator and a second insulator. and a refrigerant liquid supply section that supplies refrigerant liquid to the coil wound around the insulator. The first insulator and the second insulator are arranged adjacent to each other in the circumferential direction. The first inner plate portion of the first insulator includes a first main body portion and an inner diameter portion located on the inner diameter side of the first main body portion. An outer circumferential surface of the inner diameter portion of the first inner plate portion of the first insulator is arranged to face an inner circumferential surface of the second inner plate portion of the second insulator.

According to this aspect, a gap having a labyrinth structure is formed between the first insulator and the second insulator by the first inner plate portion and the second inner plate portion. Therefore, the refrigerant liquid becomes difficult to flow through the gap, and the refrigerant liquid tends to stay between the first insulator and the second insulator. As a result, it is possible to improve the cooling efficiency of the stator when using a method in which the stator is directly cooled by the jetted refrigerant liquid.

1 is a schematic configuration diagram of a hybrid vehicle equipped with a device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of the rotating electric machine. FIG. 2 is a diagram of main parts of the rotating electric machine viewed along the axial direction. It is a figure showing an insulator alone. FIG. 3 is a diagram showing main parts of a first insulator and a second insulator. It is a figure showing a 1st modification. It is a figure showing a 2nd modification.

Hereinafter, a hybrid vehicle (hereinafter simply referred to as "vehicle") 100 including a power transmission device 10 as a device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic configuration diagram of a vehicle 100. As shown in FIG. 1, vehicle 100 includes engine 1 and power transmission device 10 provided in a power transmission path connecting engine 1 and drive wheels 5. As shown in FIG.

In this embodiment, the power transmission device 10 is a transmission, and includes a variator 20, a forward/reverse switching mechanism 30, and a rotating electric machine 40.

Rotating electric machine 40 is provided between variator 20 and engine 1 in a power transmission path.

The rotating electrical machine 40 includes a housing 41, a cover 42 as a fixed member provided at the opening of the housing 41 on the engine 1 side, a stator 43 provided on the inner periphery of the housing 41, a rotating shaft 44, and a rotating shaft. 44, and a clutch 48 that connects and disconnects the rotor 80 and the input shaft 11. The rotor 80 includes a rotor frame 81 and a core 82 provided on the outer periphery of the rotor frame 81.

The rotating electric machine 40 is fixed to the power transmission device 10 by fastening the cover 42 to the case 12 of the power transmission device 10 with bolts (not shown).

The input shaft 11 is rotatably supported by the cover 42 via a bearing 50, and receives the output rotation of the engine 1. Further, the rotating shaft 44 is rotatably supported by the housing 41 via a bearing 51.

Clutch 48 is a normally open hydraulic clutch. The engagement and disengagement of the clutch 48 are controlled by hydraulic pressure regulated by a hydraulic control valve unit (not shown). Clutch 48 is a wet multi-disc clutch, but other clutches may be used.

When the clutch 48 is engaged, the input shaft 11 and the rotor 80 are directly connected. That is, the input shaft 11 and the rotating shaft 44 are directly connected and rotate at the same speed.

The rotating electrical machine 40 can operate as an electric motor that receives power from a battery (not shown) and is driven to rotate. Further, the rotating electrical machine 40 functions as a generator when the rotor 80 receives rotational energy from the drive wheels 5, and can charge the battery.

The variator 20 includes a primary pulley 2 and a secondary pulley 3 that are arranged so that their V-grooves are aligned, and a belt 4 that is stretched across the V-grooves of the pulleys 2 and 3.

An engine 1 is arranged coaxially with the primary pulley 2, and a rotating electric machine 40 and a forward/reverse switching mechanism 30 are provided between the engine 1 and the primary pulley 2 in this order from the engine 1 side.

The forward/reverse switching mechanism 30 has a double pinion planetary gear set 30a as a main component, a sun gear of which is coupled to a rotating shaft 44 of a rotating electrical machine 40, and a carrier coupled to a primary pulley 2 of a variator 20. The forward/reverse switching mechanism 30 further includes a forward clutch 30b that directly connects the sun gear and carrier of the double pinion planetary gear set 30a, and a reverse brake 30c that fixes the ring gear. When the forward clutch 30b is engaged, the input rotation from the rotating shaft 44 is transmitted to the primary pulley 2 in the same rotational direction, and when the reverse brake 30c is engaged, the input rotation from the rotating shaft 44 is reversed and the rotation is transmitted to the primary pulley 2. transmitted to.

The forward clutch 30b is engaged by being supplied with clutch pressure from the hydraulic control valve unit when the forward traveling mode is selected as the traveling mode of the vehicle 100. The reverse brake 30c is engaged when brake pressure is supplied from the hydraulic control valve unit when the reverse travel mode is selected as the travel mode of the vehicle 100.

The rotation of the primary pulley 2 is transmitted to the secondary pulley 3 via the belt 4, and the rotation of the secondary pulley 3 is transmitted to the drive wheels 5 via the output shaft 8, gear set 9, and differential gear device 15.

In order to make it possible to change the gear ratio between the primary pulley 2 and the secondary pulley 3 during the above power transmission, one of the conical plates forming the V groove of the primary pulley 2 and the secondary pulley 3 is fixed to the conical plates 2a and 3a. The other is movable conical plates 2b and 3b which are movable in the axial direction.

These movable conical plates 2b, 3b are urged toward the fixed conical plates 2a, 3a by supplying primary pulley pressure and secondary pulley pressure from the hydraulic control valve unit, thereby frictionally engaging the belt 4 with the conical plates. In this way, power is transmitted between the primary pulley 2 and the secondary pulley 3.

During gear shifting, the width of the V-groove of both pulleys 2 and 3 is changed by the differential pressure between the primary pulley pressure and the secondary pulley pressure generated in accordance with the target gear ratio, and the belt 4 is wound around the pulleys 2 and 3. The target gear ratio is achieved by continuously changing the arc diameter.

Between the rotating electrical machine 40 and the forward/reverse switching mechanism 30, there is a pipe 53 as an oil supply member extending in an arc shape along the circumferential direction of the rotating electrical machine 40, and a pipe 53 that covers the rotating electrical machine 40 side of the forward/reverse switching mechanism 30. An intermediate cover 31 is provided that faces the rotating electrical machine 40 in the axial direction via a pipe 53.

The pipe 53 is connected to an oil passage provided inside the intermediate cover 31, and allows the oil supplied through the intermediate cover 31 to be delivered to the stator of the rotating electrical machine 40 through a plurality of holes 53a formed on the rotating electrical machine 40 side. It is designed to eject towards 43.

A sprocket 55 is rotatably supported by the intermediate cover 31 via a bush 54. The sprocket 55 is connected to the rotating shaft 44 of the rotating electric machine 40 via a connecting member 56, and the sprocket 55 is further connected to a sprocket 6b provided on the input shaft 6a of the oil pump 6 by a chain 57. As a result, when the rotating electric machine 40 rotates, the oil pump 6 is driven and oil is supplied to the hydraulic control valve unit.

The bush 54 and sprocket 55 are provided at positions overlapping the pipe 53 in the radial direction. "Overlapping in the radial direction" means that they are arranged so that at least a portion thereof overlaps when viewed from the radial direction. Further, the chain 57 is arranged between one end and the other end of the arc-shaped pipe 53, that is, so as to pass through the notch of the pipe 53. Thereby, the size of the power transmission device 10 in the axial direction can be suppressed.

The vehicle 100 is configured as described above, and has two driving modes: an EV mode in which the rotating electrical machine 40 is driven by electric power supplied from the battery and running using only the driving force of the rotating electrical machine 40; The vehicle has an engine running mode in which the vehicle is driven, and an HEV mode in which the vehicle is driven by the driving force of the engine 1 and the rotating electric machine 40.

In the EV mode, the vehicle 100 travels with the clutch 48 released and either the forward clutch 30b or the reverse brake 30c engaged, driving only the rotating electric machine 40 with electric power from the battery.

In the engine running mode, the vehicle 100 drives only the engine 1 and runs with the clutch 48 and either the forward clutch 30b or the reverse brake 30c engaged.

In the HEV mode, the vehicle 100 drives the engine 1 and the rotating electric machine 40 and runs with the clutch 48 and either the forward clutch 30b or the reverse brake 30c engaged.

Next, the configuration of the rotating electrical machine 40 will be described in detail with reference to FIG. 2. FIG. 2 is a sectional view of the rotating electric machine 40.

As shown in FIG. 2, the housing 41 has a cylindrical portion 41a provided on the outer circumferential side and a cylindrical portion 41b provided on the inner circumferential side and extending toward the inside of the housing 41. A stator 43 is fixed to the inner periphery of the cylindrical portion 41a. The cylindrical portion 41b rotatably supports the rotating shaft 44 via the bearing 51.

The stator 43 includes a stator core 431, an insulator 432, and a stator coil 433. The stator core 431 is constructed by laminating a large number of thin electromagnetic steel plates. Insulator 432 is made of resin, for example, and is provided on stator core 431 to insulate stator core 431 and stator coil 433. Stator coil 433 is wound around insulator 432.

On the surface of the housing 41 facing the pipe 53, an elongated opening 41c is formed along the circumferential direction. As a result, oil ejected from the hole 53a of the pipe 53 is directly blown onto the stator coil 433 through the opening 41c, as shown by the arrow.

As a result, the stator coil 433 that generates heat is efficiently cooled, so the stator 43 can be efficiently cooled, and thus the rotating electric machine 40 can be efficiently cooled. The oil corresponds to a refrigerant liquid, and the pipe 53 corresponds to a refrigerant liquid supply section. Note that the shape and number of the openings 41c can be set as appropriate.

The outer peripheral side of the cover 42 is fixed to the case 12 of the power transmission device 10. Further, the cover 42 has a cylindrical portion 42a provided on the inner peripheral side and extending toward the housing 41 side.
The cylindrical portion 42a rotatably supports the input shaft 11 via a bearing 50.

A seal member 59 is provided between the cylindrical portion 42a and the input shaft 11 to prevent oil from leaking to the outside.

A needle bearing 60 that receives a load in the axial direction and a needle bearing 61 that receives a load in the radial direction are provided between the input shaft 11 and the rotating shaft 44.

A clutch hub 62 is fixed by welding to the end of the input shaft 11 on the forward/reverse switching mechanism 30 side. The clutch hub 62 has a cylindrical portion 62a provided on the outer circumferential side and extending toward the engine 1 side. A plurality of drive plates 48a of the clutch 48 are attached to the outer periphery of the cylindrical portion 62a so as to be slidable in the axial direction by spline connection.

A rotor frame 81 is fixed to the outer periphery of the rotating shaft 44 by welding. The rotor frame 81 has a cylindrical portion 81a provided on the outer circumferential side. A core 82 is fixed to the outer periphery of the cylindrical portion 81a.

A plurality of driven plates 48b of the clutch 48 are attached to the inner periphery of the cylindrical portion 81a so as to be slidable in the axial direction by spline connection. The retainer plate 63 is interposed between a driven plate 48b disposed at the end opposite to the piston arm 64 and a ring 65 fixed to a groove on the inner circumference of the cylindrical portion 81a. The retainer plate 63 is thicker in the axial direction than the driven plate 48b, and prevents the drive plate 48a and the driven plate 48b from falling down.

When fastening pressure is supplied from the hydraulic control valve unit to the piston oil chamber 66, the piston 67 moves toward the engine 1 while compressing the return spring 68. The clutch 48 is brought into the engaged state by the pressing force transmitted from the piston 67 via the needle bearing 69 and the piston arm 64. The needle bearing 69 prevents the piston 67 from rotating as the piston arm 64 rotates.

FIG. 3 is a diagram of main parts of the rotating electrical machine 40 viewed along the axial direction. FIG. 4 is a diagram showing the insulator 432 alone. FIG. 3 shows the main parts of the rotating electrical machine 40 above a horizontal line passing through the axis of the stator 43.

As shown in FIG. 3, a plurality of insulators 432 are provided in the circumferential direction. Stator core 431 is provided with a plurality of protrusions extending radially inward from a ring-shaped portion, and insulator 432 is attached to the protrusions of stator core 431 .

As shown in FIG. 4, the insulator 432 has a U-shaped three-dimensional shape, and is attached to the stator core 431 by attaching the U-shaped opening portion to the convex portion of the stator core 431 from the axial direction. . The insulator 432 is fixed by being press-fitted into the convex portion of the stator core 431. Stator coil 433 is wound around insulator 432 that is attached to stator core 431 .

As shown in FIG. 3, the plurality of insulators 432 include a first insulator 432A and a second insulator 432B. The first insulator 432A and the second insulator 432B are arranged above a horizontal line passing through the axis of the stator 43. The first insulator 432A and the second insulator 432B constitute two insulators arranged adjacent to each other in the circumferential direction among the plurality of insulators 432.

In this embodiment, the power transmission device 10 is a rotating electrical machine 40 including a stator 43 having a plurality of insulators 432, and the plurality of insulators 432 include a first insulator 432A, a second insulator 432B, The first insulator 432A and the second insulator 432B are arranged adjacent to each other in the circumferential direction.

To further explain the insulator 432 using FIG. 4, the insulator 432 has a winding portion 432a, an inner plate portion 432b, and an outer plate portion 432c. A stator coil 433 is wound around the winding portion 432a. An inner plate portion 432b and an outer plate portion 432c are provided at both radial ends of the winding portion 432a. The inner plate portion 432b is located on the inner diameter side of the rotating electric machine 40 than the outer plate portion 432c.

The inner diameter side plate portion 432b and the outer diameter side plate portion 432c have a shape that protrudes further to the periphery than the wrapped portion 432a. The inner diameter side plate portion 432b and the outer diameter side plate portion 432c are shaped to protrude beyond the wrapped portion 432a even on the side where the insulator 432 opens in a U-shape.

The outer diameter plate portion 432c has an engaging portion that engages the outer diameter plate portions 432c between the insulators 432 adjacent to each other in the circumferential direction of the rotating electrical machine 40. For example, such an engaging portion is formed by a groove provided at one end in the circumferential direction of the outer diameter side plate portion 432c and extending in the axial direction, and an insertion portion provided at the other end in the circumferential direction and having a shape to fit into the groove. Can be configured.

By the way, in this embodiment, as described above, a method is adopted in which oil is jetted to the stator 43 to directly cool the stator 43, thereby efficiently cooling the stator 43.

However, even in this case, if the ejected oil immediately flows down from the stator 43, the ejected oil will not be used for cooling before sufficient heat is removed from the stator 43.

Therefore, in this embodiment, in order to further improve the cooling efficiency of the stator 43, the first insulator 432A and the second insulator 432B in the power transmission device 10 are configured as described below.

FIG. 5 is a diagram showing main parts of the first insulator 432A and the second insulator 432B. The first inner plate portion 432bA indicates the inner plate portion 432b of the first insulator 432A. The second inner plate portion 432bB indicates the inner plate portion 432b of the second insulator 432B.

The inner plate portion 432b has a main body portion B and a protruding portion P. The main body portion B is connected to the winding portion 432a. The first main body part BA indicates the main body part B of the first insulator 432A, and the second main body part BB indicates the main body part B of the second insulator 432B.

The protrusion P protrudes from the main body B in the circumferential direction of the rotating electric machine 40. The protrusion P includes a protrusion P1 that protrudes from the main body B at one end in the circumferential direction of the rotating electric machine 40, and a protrusion P2 that protrudes from the main body B at the other end in the circumferential direction of the rotary electric machine 40. The protrusion P1 is provided radially inward in the rotating electrical machine 40 than the protrusion P2. The first protrusion P1A indicates the protrusion P1 of the first insulator 432A, and the second protrusion P2B indicates the protrusion P2 of the second insulator 432B. The first protrusion P1A overlaps the second protrusion P2B in the radial direction.

In the power transmission device 10 configured in this manner, the outer circumferential surface S1 of the first inner plate portion 432bA is arranged to face the inner circumferential surface S2 of the second inner plate portion 432bB. The outer circumferential surface S1 is a surface of the rotating electric machine 40 facing the outer circumferential side, and the inner circumferential surface S2 is the surface of the rotating electric machine 40 facing the inner circumferential side.

According to such a configuration, a gap C having a labyrinth structure is formed between the first insulator 432A and the second insulator 432B. Therefore, it becomes difficult for oil to flow through the gap C, and oil tends to stay between the first insulator 432A and the second insulator 432B. As a result, it becomes possible to improve the cooling efficiency of the stator 43 when using a method of directly cooling the stator 43 with the jetted oil (an effect corresponding to claim 1).

In this embodiment, the outer circumferential surface S1 is arranged to face the inner circumferential surface S2 obliquely. According to such a configuration, by arranging the opposing surfaces of the outer circumferential surface S1 and the inner circumferential surface S2 diagonally, the entrance or exit of the gap C of the labyrinth structure is improved compared to the case where the opposing surfaces are arranged parallel to each other. You can narrow down the width of the sides. Therefore, the flow of oil passing through the gap C of the labyrinth structure can be regulated, and oil is more likely to stay between the first insulator 432A and the second insulator 432B, thereby increasing the cooling efficiency. 2).

In this embodiment, the first inner plate portion 432bA includes a first body portion BA and a first protrusion P1A that protrudes from the first body portion BA in the circumferential direction, and the second inner plate portion 432bB includes: It has a second body part BB and a second protrusion part P2B that protrudes from the second body part BB in the circumferential direction. The outer circumferential surface S1 of the first protrusion P1A is arranged to face the inner circumferential surface S2 of the second protrusion P2B.

According to such a configuration, the first protruding part P1A and the second protruding part P2B protruding in the circumferential direction from each main body part B overlap in the radial direction, so that the structure can easily secure space on the inner diameter side. (Effect corresponding to claim 4).

In this embodiment, the radial thickness of the first protrusion P1A is smaller than the radial thickness of the first body part BA, and the radial thickness of the second protrusion P2B is smaller than the radial thickness of the second body part BB. It's also small.

According to such a configuration, the gap C of the labyrinth structure can be formed while suppressing the radial thickness of the inner diameter side plate portion 432b, so that it is possible to have a structure in which it is easy to secure the space on the inner diameter side (Claim 6). ).

The labyrinth structure of the gap C is bent at at least one place, and has a structure that suppresses the movement of oil that is ejected from the pipe 53, collides with the stator 43, and scatters toward the inner diameter side. Furthermore, the cooling efficiency is greatly affected by the oil that tends to move toward the inner diameter side due to gravity.

Therefore, in this embodiment, the first insulator 432A and the second insulator 432B are arranged above the horizontal line passing through the axis of the stator 43.

According to such a configuration, the oil that tends to move toward the inner diameter side due to gravity can be effectively retained in the gap C of the labyrinth structure, so that the effect of improving cooling efficiency is high (effect corresponding to claim 7). ).

If the shapes of the plurality of insulators 432 are different, confirmation work will increase and become complicated when assembling the insulators 432.

In this embodiment, the plurality of insulators 432 are designed to have the same shape.

According to such a configuration, confirmation work is reduced when assembling the insulator 432, and assembling efficiency is improved. Furthermore, when the insulator 432 is molded using a mold or the like, there is no need to manufacture a plurality of molds, resulting in cost reduction (an effect corresponding to claim 8).

The first insulator 432A and the second insulator 432B may be configured as follows.

FIG. 6 is a diagram showing a first modification. Also in the first modification, the shapes of the plurality of insulators 432 can be designed to have the same shape. This also applies to the second modified example described later.

In this example, the inner plate portion 432b has an inner diameter portion IP instead of the protrusion P. The inner diameter part IP is located on the inner diameter side than the main body part B, and has a radial protrusion part IP1 and a circumferential protrusion part IP2. The radial protruding portion IP1 protrudes inward in the radial direction of the rotating electrical machine 40 from the inner diameter plate portion 432b, and the circumferential protruding portion IP2 protrudes in the circumferential direction of the rotating electrical machine 40 from the radial protruding portion IP1. Inner diameter part IPA indicates inner diameter part IP in first insulator 432A. In this example, the outer circumferential surface S1 indicates the outer circumferential surface of the inner diameter portion IPA, and the inner circumferential surface S2 indicates the inner circumferential surface of the second inner diameter side plate portion 432bB. The outer circumferential surface S1 is formed at a circumferentially protruding portion IP2 of the inner diameter portion IPA.

In such a first modification, the outer circumferential surface S1 of the inner diameter portion IPA is arranged to face the inner circumferential surface S2 of the second inner diameter plate portion 432bB.

According to such a configuration, the length of the opposing surfaces of the outer circumferential surface S1 and the inner circumferential surface S2 can be increased in the circumferential direction, thereby increasing the effect of regulating the flow of oil passing through the gap C of the labyrinth structure. I can do it. Therefore, since oil is more likely to stay between the first insulator 432A and the second insulator 432B, the cooling efficiency is increased (an effect corresponding to claim 3).

In this example, the radial thickness of the portion of the inner diameter portion IPA that faces the inner circumferential surface S2 of the second inner diameter side plate portion 432bB, that is, the circumferentially protruding portion IP2 of the inner diameter portion IPA, is It is set smaller than the thickness.

According to such a configuration, the gap C of the labyrinth structure is formed while suppressing the radial thickness of the circumferential protruding portion IP2 of the inner diameter portion IPA, so it is possible to have a structure in which it is easy to secure the space on the inner diameter side. (Effect corresponding to claim 5).

The outer circumferential surface S1 of the first inner plate portion 432bA may be arranged to face the inner circumferential surface S2 of the second inner plate portion 432bB as follows.

FIG. 7 is a diagram showing a second modification. In the second modification, a recess is formed at one end in the circumferential direction of the rotating electrical machine 40 of the first inner plate portion 432bA, and a recess is formed at the other end in the circumferential direction (the first inner diameter side) of the second inner plate portion 432bB in the rotating electrical machine 40. A convex portion that is accommodated in the concave portion is formed at the end opposite to one end in the circumferential direction of the plate portion 432bA.

In this example, the surface of the concave portion of the rotating electrical machine 40 located on the radially inner side constitutes the outer peripheral surface S1, and the surface of the convex portion of the rotating electrical machine 40 located on the radially inner side constitutes the inner peripheral surface S2. The outer circumferential surface S1 and the inner circumferential surface S2 are arranged to face each other, and a gap C having a labyrinth structure is formed by the first inner plate part 432bA and the second inner plate part 432bB. Therefore, also in this case, it becomes possible to increase the cooling efficiency (effect corresponding to claim 1).

In addition, in this case, by arranging the opposing surfaces of the outer circumferential surface S1 and the inner circumferential surface S2 diagonally, the inlet and outlet sides of the gap C of the labyrinth structure are The width can also be narrowed down (an effect corresponding to claim 2).

Although the embodiments of the present invention have been described above, the above embodiments merely show a part of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments. do not have.

In the above embodiment, a case has been described in which the first insulator 432A and the second insulator 432B are arranged above the horizontal line passing through the axis of the stator 43. However, the arrangement of the first insulator 432A and the second insulator 432B is not necessarily limited to this.

For example, in the above embodiment, the device is described as the power transmission device 10. However, the device may be a rotating electrical machine-mounted device (a device equipped with a rotating electrical machine), and the power transmission device 10 can also be understood as a rotating electrical machine-mounted device.

Furthermore, in the above embodiment, the power transmission device 10 has been described as a transmission. However, the power transmission device 10 may be a speed reducer, a transmission with a motor (also a device mounted on a rotating electrical machine), a speed reducer with a motor (also a device mounted on a rotating electrical machine), or the like.

10 Power transmission device (device)
40 Rotating electric machine 43 Stator 431 Stator core 432 Insulator 432A First insulator 432bA First inner plate portion 432B Second insulator 432bB Second inner plate portion 433 Stator coil (coil)
53 Pipe (refrigerant liquid supply section)
B1 First body part B2 Second body part IPA Inner diameter part P1A First protrusion part P2B Second protrusion part S1 Outer peripheral surface S2 Inner peripheral surface

Claims (4)

A rotating electrical machine including a stator having a plurality of insulators, the plurality of insulators including a first insulator and a second insulator;
a refrigerant liquid supply unit that supplies refrigerant liquid to the coils wound around the first insulator and the second insulator,
the first insulator and the second insulator are arranged adjacent to each other in the circumferential direction,
The first inner plate portion of the first insulator includes a first main body portion and an inner diameter portion located on the inner diameter side of the first main body portion,
An apparatus characterized in that an outer circumferential surface of the inner diameter portion of the first inner plate portion of the first insulator is arranged to face an inner circumferential surface of the second inner diameter plate portion of the second insulator. The device according to claim 1,
A device characterized in that a radial thickness of a portion of the inner diameter portion of the second insulator that faces the inner circumferential surface of the second inner plate portion is smaller than a radial thickness of the first main body portion. . The device according to claim 1 or 2,
The outer circumferential surface of the first inner plate portion of the first insulator is disposed obliquely opposite to the inner circumferential surface of the second inner plate portion of the second insulator. Featured device. The device according to any one of claims 1 to 3,
A device characterized in that the plurality of insulators are designed to have the same shape.

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