JP7381624B2 - Insulators and rotating electric machines - Google Patents

Description

The present invention relates to an insulator and a rotating electric machine.

2. Description of the Related Art Insulators are known that are provided in a stator of a rotating electrical machine and are interposed between a stator core and a coil. Some insulators of this type include a sensor fixing part to which a temperature sensor that measures the temperature of the coil is fixed (see Patent Document 1). The sensor fixing part described in Patent Document 1 has an insertion port into which the temperature sensor is inserted, and the cantilever-shaped arm is elastically deformed outward by the pressing force applied from the temperature sensor inserted into the insertion port. , the temperature sensor is urged toward the coil by the elastic restoring force of this arm.

Japanese Patent Application Publication No. 2013-172478

Since the conventional sensor fixing part has a configuration in which a cantilever-like arm is elastically deformed, the tip part (temperature sensing part, etc.) of the temperature sensor needs to have rigidity. For this reason, even if a flexible thermistor is used, there is a risk that it will be difficult to fix the thermistor, or that the pressure (pressure contact force) for bringing the temperature sensing portion into contact with the coil may be insufficient.
The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to appropriately hold a thermistor using an insulator.

An insulator provided in a stator of a rotating electric machine and interposed between a stator core and a coil includes a thermistor holding part that holds a thermistor that measures the temperature of the coil, and the thermistor holding part includes a temperature sensing part of the thermistor. a first holding part that holds a portion near the tip obliquely to a predetermined surface of the coil; and a second holding part that holds the tip of the thermistor along the predetermined surface of the coil. The first holding part has a thermistor insertion hole into which the tip of the thermistor is inserted, and the second holding part has the tip of the thermistor that has passed through the thermistor insertion hole, and the second holding part has a thermistor insertion hole into which the tip of the thermistor is inserted. It is characterized by having a pressing part that presses against a predetermined surface.

An insulator can be used to properly hold the thermistor.

1 is a diagram showing a stator of a rotating electrical machine according to an embodiment of the present invention. FIG. 2 is a perspective view showing an insulator having a thermistor holding portion together with its peripheral structure. FIG. 3 is a diagram showing a state in which the clip and thermistor are removed from FIG. 2; 4 is a diagram illustrating the insulator together with its peripheral configuration as viewed from a direction different from that in FIG. 3. FIG. FIG. 3 is a diagram showing the insulator together with its peripheral components from the V side in FIG. 2; FIG. 3 is a diagram schematically showing the structure of a first holding part and a second holding part.

Embodiments of the present invention will be described below with reference to the drawings.

[Embodiment]
FIG. 1 is a diagram showing a stator 11 of a rotating electrical machine 10 according to an embodiment of the present invention.
The rotating electric machine 10 is a component that constitutes a generator or a drive motor mounted on a vehicle such as an electric vehicle or an electric motorcycle, and includes a stator 11 and a rotor 12. Reference numeral C1 in FIG. 1 is a rotating shaft of the rotating electrical machine 10, which also coincides with the central axes of the rotor 12 and stator 11. Each direction in the following description is a direction based on the rotating electrical machine 10 unless otherwise specified. Further, one side in the axial direction of the rotation axis C1 will be referred to as the front side, and the other side will be referred to as the rear side.

The stator 11 is disposed on the outer peripheral side of the rotor 12 and includes a plurality of insulators 20 , a coil 22 wound around each insulator 20 , and a stator core 24 . The stator 11 is formed into an annular shape by press-fitting convex and concave portions provided on the circumference of the stator core 24.

Each of the plurality of insulators 20 is arranged along the circumferential direction of the rotating electric machine 10. The insulator 20 is a winding frame of the coil 22, and specifically includes a cylindrical portion 32, an inner flange portion 34, and an outer flange portion 36. The cylindrical portion 32 covers a stator core extending along the radial direction of the rotating electrical machine 10 , and the coil 22 is wound around the outer peripheral surface of the cylindrical portion 32 .

The inner flange portion 34 is an end portion on the inner circumference side of the insulator 20 in the radial direction of the rotating electrical machine 10 and is formed integrally with the cylindrical portion 32 . The outer peripheral flange portion 36 is an end portion on the outer peripheral side of the insulator 20 in the radial direction of the rotating electric machine 10, and is formed integrally with the cylindrical portion 32.

The inner flange portion 34 and the outer flange portion 36 protrude further toward one axial side (front side) of the rotating electric machine 10 than the coil end 22a of the coil 22 wound around the cylindrical portion 32. Note that the coil end 22a is a portion of the coil 22 wound around the cylindrical portion 32 that constitutes the front side and the rear side of the rotating electric machine 10, and includes a portion that is in contact with a temperature sensing portion 43 of a thermistor 41, which will be described later. .

The coil 22 is electrically connected to any one of a U-phase cable, a V-phase cable, and a W-phase cable that extend outside from the rear side of the rotating electric machine 10. The U-phase cable, V-phase cable, and W-phase cable are connected to, for example, a three-phase AC power source.

The stator core 24 is formed in an annular shape and is arranged on the outer peripheral side of the plurality of insulators 20 arranged along the circumferential direction of the rotating electric machine 10. This stator core 24 fixes the coil 22 wound around each insulator 20 by restraining the insulator 20 from being separated from the outer peripheral side of each insulator 20.

In this configuration, one of these insulators 20 is provided with a thermistor holding section 51 (FIG. 2) that holds a thermistor 41 that measures the temperature of the coil 22. Note that, except for the thermistor holding part 51, the shape and structure of each part of the rotating electrical machine 10 including the insulator 20 can be the same as that of a conventional rotating electrical machine.

FIG. 2 is a perspective view showing the insulator 20 having the thermistor holding portion 51 together with the surrounding structure. The symbol X in FIG. 2 indicates the front side in the axial direction of the rotating shaft C1, and the symbol Y indicates the radial direction (radially outer side) of the rotating electrical machine 10.
The thermistor holding section 51 is a holding section that holds the thermistor 41 in contact with the coil 22 . The thermistor 41 is a type of contact temperature sensor, and has a small temperature sensing part 43 (Fig. 6) at the tip of a flexible wiring 42, and has advantages such as being easy to place in a limited space. There is.

The temperature sensing section 43 is also referred to as a temperature sensing element, a thermistor element, or a thermistor sensor. The wiring 42 is a flexible covered wiring in which a core wire serving as a conductor is covered with an insulating outer sheath, and is also referred to as a lead wire or a cable.

As shown in FIG. 2, the inner flange portion 34 and the outer flange portion 36 of the insulator 20 protrude outward (frontward) from the coil end 22a of the coil 22. A recess 36a that is recessed toward the rear is provided at the front end of the outer flange 36. The surface of the coil end 22a is exposed to the outside in the radial direction of the rotating electric machine 10 due to the recess 36a.

The thermistor holding part 51 includes a first holding part 52 located on one circumferential side of the stator 11 with respect to the recess 36a, and a second holding part 53 located on the opposite side of the stator 11 in the circumferential direction with respect to the recess 35. Be prepared. The first holding portion 52 and the second holding portion 53 are integrally provided on the outer peripheral side flange portion 36 of the insulator 20. Both the first holding part 52 and the second holding part 53 are provided at positions overlapping the coils 22 when viewed from the outside in the radial direction of the stator 11 .

The first holding portion 52 is located on the radially outer side of the outer flange portion 36 and further rearward than the front end of the outer flange portion 36 . The first holding portion 52 has a thermistor insertion hole 54 (FIG. 4) that guides the temperature sensing portion 43 of the thermistor 41 toward the recess 36a.
Since the first holding part 52 is located at the rear of the front end of the outer flange part 36, even if the first holding part 52 is provided, the outer flange part 36 is located in the axial direction of the rotation axis C1 (corresponding to the X direction). Do not increase the size.

Further, the first holding portion 52 is provided at a position overlapping the stator core 24 in the axial direction of the rotation axis C1 (corresponding to the X direction). Therefore, it is possible to prevent the first holding portion 52 from protruding outward in the radial direction from the stator core 24, and it becomes easier to suppress the stator 11 and the rotating electric machine 10 from increasing in size in the radial direction.
In this embodiment, the temperature sensing portion 43 of the thermistor 41 is brought into contact with a surface of the coil end 22a on the front side of the rotating electrical machine 10 and on the radially outer side of the stator 11. However, the position where the temperature sensing part 43 is brought into contact may be changed as appropriate within a range where the temperature of the coil 22 can be measured.

After the tip portion B1 (FIG. 6) of the thermistor 41 including the temperature sensing portion 43 is passed through the first holding portion 52, the clip 61 shown in FIG. 2 is fixed thereto. This clip 61 prevents the thermistor 41 from falling off from the thermistor holding portion 51.

FIG. 3 is a diagram showing a state in which the clip 61 and thermistor 41 are removed from FIG. 2, and FIG. 4 is a diagram showing the insulator 20 together with the surrounding structure as seen from a direction different from that in FIG. 3.
As shown in FIGS. 3 and 4, the first holding portion 52 includes a pair of guide portions 55 that guide the wiring 42 of the thermistor 41, and a pair of engagement portions 56 with which the clip 61 engages. One end of the thermistor insertion hole 54 (the open end on the opposite side of the coil) is located near the pair of guide portions 55 .

The pair of guide portions 55 are provided at intervals in the axial direction of the rotating electrical machine 10, and the wiring 42 is arranged between them, thereby regulating the movement of the wiring 42 in the axial direction of the rotating electrical machine 10. The pair of engaging portions 56 are formed as protrusions that protrude from the pair of guide portions 55 in the axial direction of the rotating electrical machine 10 .
The clip 61 is formed in a U-shaped cross-sectional shape (gate-shaped cross-sectional shape), and engages with each of the pair of engaging portions 56 when the opening side of the clip 61 is moved toward the first holding portion 52 side. It has an engaged portion 62 (a hole in this configuration, FIG. 2). The clip 61 has a surface 61M that holds down the wiring 42 from the right side in FIG. Note that the shape of the clip 61 may be changed as appropriate.
The pair of guide portions 55 and engagement portions 56 correspond to the “fixing portion for fixing the clip 61” of the present invention.

FIG. 5 is a diagram showing the insulator 20 along with its peripheral components from the V side in FIG. 2. 5 shows the surface 22X of the coil 22 (hereinafter referred to as the coil surface 22X), which the temperature sensing part 43 of the thermistor 41 actually contacts to measure the temperature, and the thermistor The arrangement state of the insertion hole 54 and the wiring 42 of the thermistor 41 is shown.
As shown in FIG. 5, the thermistor insertion hole 54 is formed as a through hole extending obliquely to the coil surface 22X. The angle between the central axis of the thermistor insertion hole 54 and the coil surface 22X is indicated by θA.

After the wiring 42 of the thermistor 41 is inserted into the thermistor insertion hole 54, it is bent at an acute angle (indicated by angle θB in the figure) between the pair of guide parts 55, and the bent part is inserted from the outside by a clip 61. Being held down. Since the wiring 42 is held in a state bent at an acute angle within the clip 61, even if the wiring 42 of the thermistor 41 is pulled, the wiring 42 becomes difficult to move, and the influence on the fixed state of the thermistor 41 can be reduced.

As shown in FIG. 5, the wiring 42 exposed to the outside of the rotating electrical machine 10 is arranged along the circumferential direction of the stator 11 on the radially outer side of the insulator 20, and is connected to the stator core 24 in the axial direction of the rotation axis C1. Overlap. Therefore, the wiring 42 can be routed more compactly than when the wiring 42 is arranged along the radial outer side of the stator 11 or along the rotation axis direction of the coil 22.

FIG. 6 is a diagram schematically showing the structures of the first holding part 52 and the second holding part 53.
The first holding part 52 holds a part B2 (hereinafter referred to as a part near the tip B2) of the thermistor 41 near the tip B1 including the temperature sensing part 43 of the thermistor 41 diagonally with respect to the coil surface 22X. Hold. More specifically, the thermistor insertion hole 54 includes an inclined surface 54A having an angle θA with respect to the coil surface 22X, and an opposing surface 54B opposite to this inclined surface 54A, and between the inclined surface 54A and the opposing surface 54B. By sandwiching the portion B2 near the tip of the thermistor 41, the portion B2 near the tip is held obliquely with respect to the coil surface 22X.

The above-mentioned inclined surface 54A will be explained.
The first holding portion 52 has a coil side portion 52A located on the coil 22 side with respect to the thermistor insertion hole 54. The coil side portion 52A is formed in a shape in which the cross-sectional area (cross-sectional areas are indicated by S1 and S2 in FIG. 6, and the relationship S1>S2) decreases as it approaches the second holding portion 53, thereby achieving the above-mentioned An inclined surface 54A is formed.
Note that the inclination angle of the inclined surface 54A can be adjusted to an arbitrary inclination angle by adjusting the cross-sectional areas S1, S2, etc. Furthermore, the present invention is not limited to the configuration in which the sloped surface 54A is formed at a constant slope angle, and various sloped surfaces such as the sloped surface 54A along an arc may be employed.

When the tip B1 of the thermistor 41 is inserted into the thermistor insertion hole 54, the tip B1 is guided toward the coil surface 22X by the inclined surface 54A and the opposing surface 54B. This makes it easier to press the tip B1 of the thermistor 41 against the coil surface 22X. That is, the first holding part 52 guides the tip part B1 of the thermistor 41 toward the coil surface 22X, and makes it easy to ensure sufficient pressure (pressing force) to bring the temperature sensing part 43 into contact with the coil surface 22X.

In this configuration, a protective tube 45 that covers the temperature sensing section 43 is attached to at least the tip end B1 of the thermistor 41. The protective tube 45 is made of a flexible and thermally conductive material, and is bent along the coil surface 22X and the inner peripheral surface of the thermistor insertion hole 54. In FIG. 6, the protection tube 45 is held between the inclined surface 54A and the opposing surface 54B at the innermost part of the thermistor insertion hole 54, so that the portion B2 near the tip of the thermistor 41 is brought into contact with the coil surface 22X. It shows a state where it is positioned obliquely to the other side.

The distance between the inclined surface 54A and the opposing surface 54B gradually becomes narrower toward the back of the thermistor insertion hole 54. Thereby, the cross-sectional area of the thermistor insertion hole 54 decreases as it approaches the coil 22. Since the entrance side of the thermistor insertion hole 54 is widened, it becomes easier to insert the thermistor 41. Further, since the back side (coil 22 side) of the thermistor insertion hole 54 is narrowed, it becomes easier to clamp the thermistor 41 and fix the position of the thermistor 41.

Note that the location sandwiched between the inclined surface 54A and the opposing surface 54B is not limited to the protective tube 45, and may be the location of the wiring 42. The shapes of the inclined surface 54A and the opposing surface 54B are not limited to the shape shown in FIG. 6, and a wide range of shapes that can hold the portion B2 near the tip of the thermistor 41 obliquely with respect to the coil surface 22X can be applied, for example, an inclined surface. The gap between 54A and opposing surface 54B may be constant.

The second holding portion 53 has a holding portion 53A that presses the tip B1 of the thermistor 41 toward the coil surface 22X, and this holding portion 53A holds the tip B1 of the thermistor 41 along the coil surface 22X. Then, the temperature sensing portion 43 is brought into pressure contact with the coil surface 22X.
The holding part 53A is located on the opposite side of the coil surface 22X with respect to the part of the outer flange part 36 located on the opposite side of the stator 11 in the circumferential direction with respect to the recessed part 36a (corresponding to the opposite side of the first holding part 52). By providing a radial recess 53B that is recessed (radially outward of the rotating electric machine 10), it is integrally formed with the outer peripheral side flange portion 36.

A gap is formed between the radial recess 53B and the coil surface 22X, into which the tip B1 of the thermistor 41 fits. As a result, the tip portion B1 of the thermistor 41 is pressed toward the coil surface 22X by the holding portion 53A, and the tip portion B1 is held in contact with the coil surface 22X and in a state along the coil surface 22X.

As shown in FIG. 6, it is preferable that the holding portion 53A extends to the vicinity of the first holding portion 52 and presses the vicinity of the temperature sensing portion 43 of the thermistor 41. By extending the holding portion 53A to the vicinity of the first holding portion 52, the tip portion B1 of the thermistor 41 passing through the first holding portion 52 can be held as much as possible. Moreover, by pressing the vicinity of the temperature sensing part 43 of the thermistor 41, displacement of the temperature sensing part 43 is suppressed and it becomes easy to bring the temperature sensing part 43 into sufficient pressure contact with the coil surface 22X.
Note that the first holding portion 54B and the pressing portion 53A may be connected. In this case, the thermistor 41 coming out of the first holding part 54B can be easily guided to the coil 22 side of the holding part 53A.

As explained above, the insulator 20 interposed between the stator core and the coil 22 of the stator 11 includes the thermistor holding part 51, and the thermistor holding part 51 holds the portion B2 near the tip of the thermistor 41 relative to the coil surface 22X. The first holding part 52 holds the tip part B1 of the thermistor 41 obliquely, and the second holding part 53 holds the tip part B1 of the thermistor 41 along the coil surface 22X. The first holding part 52 has a thermistor insertion hole 54 into which the tip B1 of the thermistor 41 is inserted, and the second holding part 53 has a presser that holds the tip B1 that has passed through the thermistor insertion hole 54 toward the coil surface 22X. It has a section 53A.

According to this configuration, a separate holder member for holding the thermistor 41 is not required, and the thermistor holding part 51 can be easily made compact by reducing the number of parts. Further, since the first holding portion 52 holds the portion B2 near the tip of the thermistor 41 diagonally with respect to the coil surface 22X, it is easy to secure the pressure contact force that brings the temperature sensing portion 43 of the thermistor 41 into contact with the coil surface 22X, and , the thermistor holding portion 51 can be made more compact than a configuration in which the tip portion B1 and the portion near the tip B2 of the thermistor 41 are held perpendicularly to the coil surface 22X. Therefore, the thermistor 41 can be properly held using the insulator 20, and it is advantageous for making the stator 11 more compact.

Further, the first holding portion 52 has a coil side portion 52A located on the coil 22 side with respect to the thermistor insertion hole 54, and the cross-sectional area of the coil side portion 52A decreases as it approaches the second holding portion 53. According to this configuration, the coil side portion 52A functions as a guide surface that guides the temperature sensing portion 43 and the like of the thermistor 41 toward the coil surface 22X, and as a holding surface that holds the thermistor 41 obliquely. This makes it easier to properly hold the thermistor 41.

Further, the cross-sectional area of the thermistor insertion hole 54 decreases as it approaches the coil 22. According to this configuration, the inlet side of the thermistor insertion hole 54 becomes wider, making it easier to insert the thermistor 41. Furthermore, since the coil 22 side of the thermistor insertion hole 54 becomes narrower, it becomes easier to clamp the thermistor 41 and fix the position of the thermistor 41.

Further, both the first holding portion 52 and the second holding portion 53 overlap the coil 22 when viewed from the outside in the radial direction of the stator 11 . That is, the thermistor holding portion 51 overlaps with the coil 22 when viewed from the radially outer side of the stator 11. This makes it easier to make the thermistor holding part 51 more compact in the axial direction of the rotating electrical machine 10 than in the case where the thermistor holding part 51 is shifted in the axial direction of the rotating electrical machine 10 with respect to the coil 22 .

Further, around the thermistor insertion hole 54, a pair of guide portions 55 and an engaging portion 56 are provided that function as a fixing portion for fixing a clip 61 that presses the wiring 42 of the thermistor 41 from the outside. According to this configuration, it becomes easier to prevent the thermistor 41 from shifting even if the wiring 42 is pulled.
Furthermore, the wiring 42 of the thermistor 41 is bent at an acute angle within the clip 61. According to this configuration, it becomes easier to reduce the influence on the fixed state of the thermistor 41 when the wiring 42 of the thermistor 41 is pulled.

Further, since the wiring 42 of the thermistor 41 is arranged along the circumferential direction of the stator 11 on the radial outside of the insulator 20, the wiring 42 can be arranged radially outside of the stator 11 or rotated with respect to the coil 22. The wiring 42 can be routed more compactly than in the case where it is arranged in an axial position.

Further, the pair of engaging portions 56 are provided at intervals in the axial direction of the rotating electric machine 10 and are members that the clips 61 engage with, respectively, and the pair of guide portions 55 are provided at intervals in the axial direction of the rotating electric machine 10. The wiring 42 of the thermistor 41 is arranged between the members. The clip 61 prevents the wiring 42 from coming off from between the guide parts 55. According to this configuration, when the wiring 42 is pulled in the axial direction of the rotating electric machine 10, the movement of the wiring 42 can be restricted by the guide portion 55, and the situation where the clip 61 comes off can be prevented.

Further, by employing the insulator 20 provided with the thermistor holding portion 51 in the rotating electrical machine 10, it becomes advantageous to reduce the number of parts of the rotating electrical machine 10 and downsize the rotating electrical machine 10.

The above-described embodiment shows one aspect of the present invention, and the present invention is not limited to the above-described embodiment. For example, although the present invention has been described as being applied to the insulator 20 used in the rotating electric machine 10 shown in FIG. 1, it may also be applied to insulators used in other rotating electric machines. Further, the shape and structure of each part of the insulator 20 may be changed as appropriate. Further, the shape and structure of each part of the thermistor holding section 51 may be changed as appropriate without departing from the spirit of the present invention.

[Configuration supported by the above embodiment]
The above embodiment supports the following configurations.

(Structure 1) An insulator provided in a stator of a rotating electrical machine and interposed between a stator core and a coil includes a thermistor holding part that holds a thermistor that measures the temperature of the coil, and the thermistor holding part is configured to sense the temperature of the thermistor. a first holding part that holds a portion near the tip including the hot part obliquely to a predetermined surface of the coil; and a first holding part that holds the tip of the thermistor along the predetermined surface of the coil. a second holding part, the first holding part has a thermistor insertion hole into which the tip of the thermistor is inserted, and the second holding part has a thermistor insertion hole into which the thermistor has passed the tip, An insulator characterized by having a pressing part that presses against the predetermined surface of the coil.
According to this configuration, a separate holder member for holding the thermistor 41 is not required, and the thermistor holding part 51 can be easily made compact by reducing the number of parts. In addition, it becomes easier to secure the pressure contact force that brings the temperature sensing portion of the thermistor into contact with the coil. These allow the thermistor to be properly held using the insulator, and are also advantageous for downsizing.

(Structure 2) The first holding part has a coil side part located on the coil side with respect to the thermistor insertion hole, and the cross-sectional area of the coil side part decreases as it approaches the second holding part. The insulator according to configuration 1, characterized in that:
According to this configuration, the coil side portion functions as a guide surface that guides the thermistor toward the coil and a holding surface that holds the thermistor diagonally, making it easier to properly hold the thermistor.

(Structure 3) The insulator according to Structure 1 or 2, wherein the cross-sectional area of the thermistor insertion hole decreases as it approaches the coil.
According to this configuration, the inlet side of the thermistor insertion hole is wide, making it easier to insert the thermistor, and the coil side of the thermistor insertion hole is narrower, making it easier to clamp the thermistor and fix the position of the thermistor.

(Structure 4) The insulator according to any one of Structures 1 to 3, wherein the thermistor holding portion overlaps the coil when viewed from the outside in the radial direction of the stator.
According to this configuration, it becomes easier to make the thermistor holding part more compact in the axial direction of the rotating electrical machine than in the case where the thermistor holding part is shifted in the axial direction of the rotating electrical machine with respect to the coil.

(Structure 5) The insulator according to any one of Structures 1 to 4, which has a fixing part around the thermistor insertion hole for fixing a clip that presses the wiring of the thermistor from the outside.
According to this configuration, it becomes easy to prevent the thermistor from shifting even if the wiring is pulled.

(Structure 6) The insulator according to Structure 5, wherein the wiring of the thermistor is bent at an acute angle within the clip.
According to this configuration, it becomes easier to reduce the influence on the fixed state of the thermistor when the wiring of the thermistor is pulled.

(Structure 7) The insulator according to Structure 5 or 6, wherein the wiring is arranged along the circumferential direction of the stator on the radially outer side of the insulator.
According to this configuration, the wiring can be routed more compactly than in the case where the wiring is arranged on the outside in the radial direction of the stator or in a position in the rotational axis direction with respect to the coil.

(Structure 8) The fixing part is provided at intervals in the axial direction of the rotating electric machine, and includes an engaging part with which the clip engages, and a pair of guides provided at intervals in the axial direction of the rotating electric machine. Any one of configurations 5 to 7, characterized in that the clip prevents the wiring from falling out from between the guide parts when the wiring is arranged between the pair of guide parts. The insulator described in.
According to this configuration, when the wiring is pulled in the axial direction of the rotating electric machine, the movement of the wiring can be restricted by the guide portion, and a situation where the clip comes off can be prevented.

(Structure 9) A rotating electric machine comprising the insulator according to any one of Structures 1 to 8.
This configuration is advantageous in reducing the number of parts of the rotating electrical machine and downsizing the rotating electrical machine.

10 Rotating electric machine 11 Stator 12 Rotor 20 Insulator 22 Coil 22a Coil end 36a Recess 41 Thermistor 42 Wiring 43 Temperature sensing part 51 Thermistor holding part 52 First holding part 52A Coil side part 53 Second holding part 53A Holding part 54 Thermistor insertion hole 55 Guide part (fixed part)
56 Engagement part (fixed part)
61 Clip 62 Engaged part B1 Tip of the thermistor B2 Portion near the tip of the thermistor (portion near the tip)

Claims (9)

In the insulator provided in the stator (11) of the rotating electric machine (10) and interposed between the stator core and the coil (22),
comprising a thermistor holding part (51) holding a thermistor (41) that measures the temperature of the coil (22),
The thermistor holding part (51) holds a part (B2) of the thermistor (41), including the temperature sensing part (43), close to the tip part (B1) obliquely with respect to the surface of the coil (22). a first holding part (52);
a second holding part (53) that holds the tip (B1) of the thermistor (41) along the surface of the coil (22);
The first holding part (52) has a thermistor insertion hole (54) into which the tip (B1) of the thermistor (41) is inserted,
The second holding part (53) is characterized by having a pressing part (53A) that presses the tip (B1) that has passed through the thermistor insertion hole (54) toward the surface of the coil (22). insulator. The first holding portion (52) has a coil side portion (52A) located on the coil (22) side with respect to the thermistor insertion hole (54), and the cross-sectional area of the coil side portion (52A) is , the insulator according to claim 1, wherein the closer to the second holding part (53), the smaller the decrease. The insulator according to claim 1 or 2, wherein the cross-sectional area of the thermistor insertion hole (54) decreases as it approaches the coil (22). The insulator according to any one of claims 1 to 3, wherein the thermistor holding portion (51) overlaps the coil (22) when viewed from the radially outer side of the stator (11). Claim 1 characterized in that a fixing part (55, 56) is provided around the thermistor insertion hole (54) for fixing a clip (61) that holds the wiring (42) of the thermistor (41) from the outside. The insulator according to any one of 4 to 4. The insulator according to claim 5, wherein the wiring (42) of the thermistor (41) is bent at an acute angle within the clip (61). The insulator according to claim 5 or 6, wherein the wiring (42) is arranged along the circumferential direction of the stator (11) on the radially outer side of the insulator (41). The fixing parts (55, 56) are provided at intervals in the axial direction of the rotating electric machine (10), and the engaging part (56) with which the clip (61) engages, and the rotating electric machine (10). a pair of guide parts (55) provided at intervals in the axial direction of the
Claim characterized in that, in a state where the wiring (42) is disposed on the pair of guide parts (55), the clip (61) prevents the wiring from falling out from between the guide parts (55). 8. The insulator according to any one of 5 to 7. A rotating electric machine comprising the insulator according to any one of claims 1 to 8.

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