Rotating electrical machine and stator of rotating electrical machine

Abstract

This rotating electrical machine comprises: an annular stator core; a wire connection part covered with an insulating member; and a temperature sensor provided to the wire connection part, wherein the temperature sensor is provided on a first side which is one side in the radial direction of the insulating member, the insulating member includes an extending part extending in the circumferential direction, the extending part includes a first locking part provided so as to protrude to a second side which is the other side in the radial direction, a second locking part provided so as to protrude to the second side at a position different from the first locking part in the circumferential direction, and a third locking part provided on the first side, and a wire connected to the temperature sensor passes a third side which is one side in the axial direction of the insulating member and is locked by the first locking part on a fourth side which is the other side in the axial direction of the insulating member, is locked by the second locking part on the third side, passes the fourth side of the extending part and is locked by the third locking part, and is led out to the third side.

Description

Rotating electric machines, stators for rotating electric machines

[0001] The present invention relates to a rotating electric machine and a stator for the rotating electric machine.

[0002] Motors are configured to receive power by connecting to an inverter, but as motor specifications become more sophisticated, wiring methods become more complex, requiring measures to ensure strength and layout.As an example of a layout measure for a motor stator, Patent Document 1 listed below discloses a configuration in which a temperature sensor is appropriately held at a bent portion of a bus bar, making it easy to adjust the position of the bus bar connection terminal.

[0003] Japanese Patent Application Laid-Open No. 2022-71979

[0004] In view of the configuration described in Patent Document 1, the present invention aims to provide a rotating electric machine and a stator for the rotating electric machine that ensure strength and layout feasibility for a temperature sensor, and that ensure reliability and assembly stability.

[0005] A rotating electric machine comprising an annular stator core, a connecting portion covered with an insulating member, and a temperature sensor provided on the connecting portion, wherein the temperature sensor is provided on a first side, which is one radial side of the insulating member, and the insulating member has an extending portion extending in a circumferential direction, the extending portion having a first locking portion protruding toward a second side, which is the other radial side, a second locking portion protruding toward the second side at a position different from the first locking portion in the circumferential direction, and a third locking portion provided on the first side, and wherein wiring connected to the temperature sensor passes through a third side, which is one axial side of the insulating member, and is locked to the first locking portion on a fourth side, which is the other axial side of the insulating member, and is locked to the second locking portion on the third side, passes through the fourth side of the extending portion, and is locked to the third locking portion, and is drawn out to the third side.

[0006] An object of the present invention is to provide a rotating electric machine and a stator for the rotating electric machine that ensure the reliability of the temperature sensor portion and the assembly stability.

[0007] 1A and 1B are a perspective view and a partial cross-sectional view of a stator of a rotating electric machine according to a first embodiment of the present invention; an explanatory view of the wire connection portion of FIG. 1 according to a first embodiment of the present invention; an explanatory view of an extension portion of the wire connection portion of FIG. 2 according to a first embodiment of the present invention; a cross-sectional view of the wire connection portion of FIG. 2 with an insulating member removed and explaining the configuration of the portion to be measured according to a first embodiment of the present invention; a plan view explaining the configuration of a third locking portion according to a first embodiment of the present invention; an explanatory view of an extension portion of the wire connection portion according to a second embodiment of the present invention; and an explanatory view of a locking portion of the extension portion of FIG. 6 according to a second embodiment of the present invention.

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The following description and drawings are examples for explaining the present invention, and some omissions and simplifications have been made as appropriate for clarity of explanation. The present invention can be implemented in various other forms. Unless otherwise specified, each component may be singular or plural.

[0009] In order to facilitate understanding of the invention, the position, size, shape, range, etc. of each component shown in the drawings may not represent the actual position, size, shape, range, etc. Therefore, the present invention is not necessarily limited to the position, size, shape, range, etc. disclosed in the drawings.

[0010] (First embodiment and overall configuration) (Fig. 1) Fig. 1(a) is an overall perspective view of a stator of a rotating electric machine, and Fig. 1(b) is a partially enlarged view showing the relationship between the coils and slots when the stator of the rotating electric machine of Fig. 1(a) is viewed in cross section. The stator 1 of the rotating electric machine is provided in a housing (not shown), and has a stator core 1a and a wire connection portion 2 attached to the stator core 1a. The stator core 1a is formed in an annular shape and has a plurality of slots 1b.

[0011] The coil 3 has an end portion 3a and a straight portion 3b. The end portion 3a is a portion that protrudes axially from the stator core 1a to the outside. The straight portion 3b is a portion that is inserted side by side in the radial direction in the slot of the stator core 1a. The end portion 3a has a joint portion 3c and an inclined portion 3d. The straight portion 3b is a portion of the coil 3 that is inserted into the slot 1b. The coil 3 is covered with an insulating coating except for the joint portion 3c. The joint portion 3c is electrically connected to a first coil connection portion 31 and a second coil connection portion 32, which will be described later.

[0012] (Figs. 2 to 4) The configuration of the wire connection part 2 shown in Figs. 2 to 4 will be described. Fig. 4(a) is a simplified diagram of the base part 2c of the wire connection part 2 with the insulating member 4 removed, and Fig. 4(b) is a cross-sectional view illustrating the configuration of the part to be measured 7.

[0013] The wire connection portion 2 includes a conductor 13, and is formed by covering the conductor 13 with an insulating member 4. The wire connection portion 2 has a fixed portion 2a and a base portion 2c. The base portion 2c is formed to extend in the circumferential direction and has an extension portion 6, a first base portion 21, and a second base portion 22. The extension portion 6 is formed only with the insulating member 4. The fixed portion 2a is a portion that fixes the wire connection portion 2 to a housing (not shown). The fixed portion 2a is provided on one side in the circumferential direction with respect to the measured portion 7. The extension portion 6 is provided on the other side in the circumferential direction with respect to the measured portion 7. The measured portion 7 is provided between the fixed portion 2a and the extension portion 6.

[0014] The base portion 2c has a plurality of coil connection portions for connection to the joint portions 3c (FIG. 1) of the coil 3. As the coil connection portions, a first coil connection portion 31 is formed at an end portion of the first base portion 21, and a second coil connection portion 32 is formed at an end portion of the second base portion 22. The first base portion 21 and the second base portion 22 are provided on a second side that is opposite to a first side that is one side in the radial direction.

[0015] The temperature sensor 10 is attached to the conductor 13 in the portion to be measured 7 that is not covered with the insulating member 4 in the connection portion 2, thereby ensuring responsiveness. The temperature sensor 10 is provided on a first side, which is one radial side, in the connection portion 2. With this configuration, the temperature sensor 10 measures the temperature of the conductor 13 that is connected to the coil 3 of the stator 1, and the detected temperature of the coil 3 is transmitted to a control unit (not shown) via the wiring 5 connected to the temperature sensor 10, thereby enabling the control unit to perform control to prevent the motor from burning out.

[0016] The temperature sensor 10 is susceptible to vibration, which generates loads, and therefore there is a risk that the wiring 5 connected to the sensor 10 may be broken or disconnected. Therefore, the present invention employs a structure in which the connection part 2, which is covered with an insulating member, is provided with an extension part 6 formed of an insulating member 4 and extending in the circumferential direction. The extension part 6 supports the structure in which the wiring 5 to which the sensor 10 is attached rises from the connection part 2.

[0017] The extension portion 6 has a first locking portion 6a, a second locking portion 6b, a third locking portion 6c, and a fourth locking portion 6d. The first locking portion 6a is provided so as to protrude toward the second side, which is the other radial side. The second locking portion 6b is provided so as to protrude toward the second side at a position different from the first locking portion 6a in the circumferential direction. The third locking portion 6c is provided on the first side. The fourth locking portion 6d is provided on the third side, which is one axial side.

[0018] By utilizing the extension portion 6 having such a structure, the wire 5 is routed via each locking portion to ensure the stability of the wire 5 connected to the temperature sensor 10. Specifically, the wire 5 first passes through the fourth locking portion 6d provided on the third side and is locked by the first locking portion 6a on the fourth side, which is the other side in the axial direction. The wire 5 is also locked by the second locking portion 6b on the third side. The wire 5 then passes through the fourth side, is locked by the third locking portion 6c, and is drawn out to the third side.

[0019] In this way, the wiring 5 is fixed in contact with each other at two or more paired surfaces in the axial direction and two or more paired surfaces in the radial and circumferential directions by each locking portion, and is routed in a wavy pattern, thereby suppressing resonance of the wiring 5 and reducing the load on the temperature sensor 10.

[0020] The second coil connection portion 32 is located farther from the base portion 2c than the first coil connection portion 31. The base portion 2c and the second coil connection portion 32 are integrally covered with the insulating member 4. In other words, the second base portion 22 is configured to bridge the base portion 2c and the second coil connection portion 32 from the base portion 2c formed in the circumferential direction toward the second side, and the bridging portion is covered with the insulating member 4. This ensures a spatial distance between the second coil connection portion 32, which is a phase portion, and the first coil connection portion 31, thereby ensuring insulation. Furthermore, the rigidity of the second base portion 22 is improved, suppressing stress generated in the second coil connection portion 32 and improving vibration resistance.

[0021] The measurement target 7 includes a pair of first measurement target portions 7a protruding from the base 2c toward the first side, and a second measurement target portion 7b connecting the pair of first measurement target portions 7a and formed on the first side. Thus, the measurement target 7 is configured such that a portion of the conductor 13 protrudes radially outward from the base 2c in a rib-like shape. By placing the temperature sensor 10 on the second measurement target portion 7b, not only is it easier to attach the temperature sensor 10 to the measurement target 7, but the section modulus of the measurement target 7 is also ensured, improving seismic resistance. It also suppresses heat transfer to the insulating member 4. Furthermore, because there are no interfering components with the first measurement target portion 7a, workability is improved due to structural constraints on the temperature sensor 10 mounting jig, and confirmation of the temperature sensor 10 after installation is facilitated.

[0022] The first base 21 is connected to one end of the first measured portion 7a. The second base 21 is connected to the other end of the first measured portion 7a. In this configuration, the current flowing through the coil connection portions 31, 32 flows without branching between the first base 21, one end of the first measured portion 7a, the second measured portion 7b, the other end of the first measured portion 7a, and the second base 22. This reduces the discrepancy between the temperature of the coil 3 and the temperature of the measurement location of the temperature sensor 10, reduces the error in the detected temperature, and improves control accuracy. This also contributes to improving the motor output density.

[0023] (Fig. 5) In the extension portion 6, the third locking portion 6c has a ring-shaped through hole 11 with an opening 12 in one portion. The wiring 5 is arranged to pass through the through hole 11. The conductor 9 is integrally covered with a cylindrical insulating coating 8 to prevent damage to the conductor 9. The through hole 11 of the third locking portion 6c has a rectangular cross section. The multiple conductors 9 that form the wiring 5 are arranged side by side in the longitudinal direction of the through hole 11.

[0024] When the wiring 5 is placed in the through hole 11 of the third locking portion 6c, it is inserted through the opening 12. Here, if the opening width of the opening 12 is L and the diameter of the conductor 9 is D, the relationship D<L<2D holds. In other words, it is not possible to insert two conductors 9 side by side into the through hole 11 with respect to the width L of the opening 12; rather, the conductors 9 must be inserted into the through hole 11 one by one with respect to the width L of the opening 12. This reduces the risk that the wiring 5 in the through hole 11 will protrude to the outside at the third locking portion 6c, making it impossible to ensure the fixation of the wiring 5.

[0025] Furthermore, the wiring 5 is fixed in contact with the four sides of the through hole 11, so that it is locked in the radial and circumferential directions, improving vibration resistance. This also improves the positional stability of the erected structure of the wiring 5, improving assembly workability.

[0026] With this configuration of each locking part, the wires 5 are routed around the extension parts 6 made of insulating member 4, thereby reducing the load acting on the sensor 10. Furthermore, in conventional motors, even if a 2Y connection could be realized by molding the coil, changing to a 4Y connection could sometimes result in an issue in manufacturing costs. However, with the present invention, the connection parts 2 can be swapped to accommodate different motor lineups, and the configuration of the present invention can be realized at low cost even when changing to a 4Y connection.

[0027] Second Embodiment (FIGS. 6 and 7) The extension portion 6 has a first locking portion 6a, a second locking portion 6b, and a third locking portion 6c. The first locking portion 6a and the second locking portion 6b are provided at different positions on one radial side (first side). The third locking portion 6c is provided on the other radial side (second side). The temperature sensor 10 is provided on the first side.

[0028] In such a configuration of the extension portion 6, the wiring 5 connected to the temperature sensor 10 is first routed between the first locking portion 6a and the second locking portion 6b via one axial side (upper side in the drawing) of the extension portion 6. Then, the wiring 5 is routed between the second locking portion 6b and the third locking portion 6c via the other axial side (lower side in the drawing) of the extension portion 6. Then, the wiring 5 is pulled out to one axial side at the third locking portion 6c.

[0029] In this configuration, of the first locking portion 6a, the second locking portion 6b, and the third locking portion 6c, at least the third locking portion 6c has a ring-shaped through hole 11 having an opening similar to the opening 12 in part, similar to the through hole 11 shown in Fig. 5. The wiring 5 having a plurality of conductors 9 is arranged to pass through this through hole 11.

[0030] With this configuration, the same effect can be achieved even if the sensor 10 is installed at a location in the wire connection portion 2 other than the location shown in Fig. 2. As shown in the figure, the second locking portion 6b may also have the same through-hole 11 configuration as the third locking portion 6c.

[0031] According to the embodiment of the present invention described above, the following advantageous effects are achieved.

[0032] (1) A rotating electric machine including an annular stator core 1a, a wire connection portion 2 covered with an insulating member 4, and a temperature sensor 10 provided on the wire connection portion 2, wherein the temperature sensor 10 is provided on a first side, which is one radial side, of the insulating member 4, and the insulating member 4 includes an extending portion 6 extending in a circumferential direction, and the extending portion 6 includes a first locking portion 6a provided to protrude to a second side, which is the other radial side, and a second locking portion 6a provided at a position different from the first locking portion 6a in the circumferential direction. The wiring 5 connected to the temperature sensor 10 passes through the third side, which is one axial side of the insulating member 4, and is locked by the first locking portion 6a at the fourth side, which is the other axial side of the insulating member 4, and is locked by the second locking portion 6b at the third side, passes through the fourth side of the extension portion 6, and is locked by the third locking portion 6c, and is drawn out to the third side. In this way, it is possible to provide a rotating electric machine that ensures the reliability of the temperature sensor unit 10 and ensures assembly stability.

[0033] (2) The third engaging portion 6c has a ring-shaped through-hole 11 with an opening 12 in a portion thereof, and the wiring 5 is disposed so as to pass through the through-hole 11. This reduces the load on the temperature sensor 10 and stabilizes the rising position of the wiring 5 connected to the temperature sensor 10.

[0034] (3) The wiring 5 is formed by covering a plurality of conductors 9 with a cylindrical insulating coating 8, the through hole 11 has a rectangular cross section, and the plurality of conductors 9 are arranged side by side in the longitudinal direction of the through hole 11. This reduces the load on the temperature sensor 10 and stabilizes the rising position of the wiring 5 connected to the temperature sensor 10.

[0035] (4) The wiring 5 is formed by covering a plurality of conductors 9 with a cylindrical insulating coating 8, and when the opening width of the through hole 11 is L and the diameter of the conductors 9 is D, D<L<2D is satisfied. This makes it possible to stabilize the rising position of the wiring 5.

[0036] (5) The extending portion 6 has a fourth locking portion 6d on the third side, and the portion of the wiring 5 passing from the first side to the second side is locked by the fourth locking portion 6d. This reduces the load on the temperature sensor 10.

[0037] (6) The connection portion 2 includes a conductor 13 partially covered by the insulating member 4. The conductor 13 includes a base portion 2c extending in the circumferential direction, a coil connection portion protruding from the base portion 2c on the second side, and a measurement portion 7 on which the temperature sensor 10 is provided. The measurement portion 7 includes a pair of first measurement portions 7a protruding to the first side and a second measurement portion 7b connecting the pair of first measurement portions 7a on the first side. This improves earthquake resistance and makes it easier to install and check the temperature sensor 10.

[0038] (7) The base 2c includes a first base 21 and a second base 22. The first base 21 is connected to one side of the first measured portion 7a, and the second base 22 is connected to the other side of the first measured portion 7a. The current flowing through the first base 21 flows without branching between the one side of the first measured portion 7a, the second measured portion 7b, the other side of the first measured portion 7a, and the second base 22. This reduces the discrepancy between the coil temperature and the temperature of the measurement site of the temperature sensor 10, contributing to an improvement in the motor output density.

[0039] (8) The connection portion 2 includes a conductor 13 partially covered with an insulating member 4. The conductor 13 includes a base 2c extending in the circumferential direction, a coil connection portion protruding from the base 2c on the second side, and a measured portion 7 on which a temperature sensor 10 is provided. A plurality of coils 3 partially covered with an insulating coating are inserted into the stator core 1a. The coils 3 include straight portions 3b that are inserted side by side in the radial direction in the slots 1b of the stator core 1a, and end portions 3a that are protruding axially from the stator core 1a to the outside. The end portions 3a include inclined portions 3d and joint portions 3c. The coil connection portion includes a first coil connection portion 31 that is joined to the joint portion 3c, and a second coil connection portion 32 that is joined to the joint portion 3c and is located farther away from the base 2c than the first coil connection portion 31. The base 2c and the second coil connection portion 32 are integrally covered with the insulating member 4. By doing so, it is possible to improve earthquake resistance and ensure insulation.

[0040] (9) The stator 1 is provided in a housing, the connection portion 2 has a fixed portion 2a fixed to the housing, the fixed portion 2a is provided on one circumferential side of the measured portion 7, and the extending portion 6 is provided on the other circumferential side of the measured portion 7, and the measured portion 7 is provided between the fixed portion 2a and the extending portion 6. This improves the earthquake resistance of the rising portion of the wiring 5.

[0041] (10) A stator for a rotating electric machine includes an annular stator core 1a, a wire connection portion 2 covered with an insulating member 4, and a temperature sensor 10 provided on the wire connection portion 2, wherein the temperature sensor 10 is provided on a first side, which is one radial side, of the insulating member 4, and the insulating member 4 includes an extending portion 6 extending in the circumferential direction, and the extending portion 6 includes a first locking portion 6a provided to protrude to a second side, which is the other radial side, and a second locking portion 6a provided at a position different from the first locking portion 6a in the circumferential direction. The wiring 5 connected to the temperature sensor 10 passes through the third side, which is one axial side of the insulating member 4, and is locked by the first locking portion 6a at the fourth side, which is the other axial side of the insulating member 4, and is locked by the second locking portion 6b at the third side, passes through the fourth side of the extension portion 6, and is locked by the third locking portion 6c, and is drawn out to the third side. In this way, it is possible to provide a stator 1 for a rotating electric machine that ensures the reliability of the temperature sensor portion 10 and the stability of assembly.

[0042] (11) A rotating electric machine includes an annular stator core 1a, a connection portion 2 covered with an insulating member 4, and a temperature sensor 10 provided on the connection portion 2, wherein the temperature sensor 10 is provided on one radial side of the insulating member 4, and the insulating member 4 includes an extension portion 6 extending in the circumferential direction, the extension portion 6 including a first locking portion 6a and a second locking portion 6b provided on one radial side and a third locking portion 6c provided on the other radial side, and the wiring 5 connected to the temperature sensor 10 is routed between the first locking portion 6a and the second locking portion 6b via one axial side of the extension portion 6, routed between the second locking portion 6b and the third locking portion 6c via the other axial side of the extension portion 6, and drawn out to one axial side at the third locking portion 6c. This configuration ensures the reliability of the temperature sensor portion 10 and ensures assembly stability even when different motor models are used.

[0043] (12) The configuration described in (11), wherein at least the third locking portion 6c among the first locking portion 6a, the second locking portion 6b, and the third locking portion 6c has a ring-shaped through-hole 11 having an opening 12 in a portion thereof, and the wiring 5 is disposed so as to pass through the through-hole 11. This configuration can accommodate different models of motors and ensure the stability of the erection of the wiring 5 connected to the temperature sensor 10.

[0044] The present invention is not limited to the above-described embodiments, and various modifications and combinations of other configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to those having all of the configurations described in the above-described embodiments, and includes those in which some of the configurations are omitted.

[0045] REFERENCE SIGNS LIST 1 Stator of rotating electrical machine 1a Stator core 1b Slot 2 Wire connection portion 2a Fixed portion 2c Base portion 3 Coil 3a End portion 3b Straight portion 3c Joint portion 3d Inclined portion 4 Insulating member 5 Wiring 6 Extension portion 6a First locking portion 6b Second locking portion 6c Third locking portion 6d Fourth locking portion 7 Measured portion 7a First measured portion 7b Second measured portion 8 Insulating coating 9 Conductor 10 Temperature sensor 11 Four sides of through hole 12 Opening 13 Conductor 21 First base portion 22 Second base portion 31 First coil connection portion 32 Second coil connection portion

Claims

1. A rotating electric machine comprising: an annular stator core; a connecting portion covered with an insulating member; and a temperature sensor provided on the connecting portion, wherein the temperature sensor is provided on a first side, which is one radial side, of the insulating member; the insulating member has an extending portion extending in a circumferential direction, the extending portion having a first locking portion protruding toward a second side, which is the other radial side, a second locking portion protruding toward the second side at a position different from the first locking portion in the circumferential direction, and a third locking portion provided on the first side; and wherein wiring connected to the temperature sensor passes through a third side, which is one axial side of the insulating member, and is locked to the first locking portion at a fourth side, which is the other axial side of the insulating member, and is locked to the second locking portion at the third side, and passes through the fourth side of the extending portion, is locked to the third locking portion, and is drawn out to the third side.

2. A rotating electric machine according to claim 1, wherein the third engaging portion has a ring-shaped through hole with an opening in a portion thereof, and the wiring is arranged passing through the through hole.

3. A rotating electric machine according to claim 2, wherein the wiring is formed by covering a plurality of conductors with a cylindrical insulating coating, the through hole has a rectangular cross section, and the plurality of conductors are arranged side by side in the longitudinal direction of the through hole.

4. A rotating electric machine according to claim 2, wherein the wiring is formed by covering a plurality of conductors with a cylindrical insulating coating, and where L is the opening width of the through-hole and D is the diameter of the conductors, D<L<2D.

5. A rotating electric machine according to claim 1, wherein the extending portion has a fourth locking portion on the third side, and the portion of the wiring passing from the first side to the second side is locked by the fourth locking portion.

6. A rotating electric machine as claimed in claim 1, wherein the connection portion comprises a conductor partially covered by the insulating member, the conductor comprising a base portion extending in the circumferential direction, a coil connection portion protruding from the base portion on the second side, and a measured portion on which the temperature sensor is provided, the measured portion comprising a pair of first measured portions protruding to the first side, and a second measured portion connecting the pair of first measured portions to each other on the first side.

7. A rotating electric machine according to claim 6, wherein the base comprises a first base and a second base, the first base is connected to one of the first measured parts, and the second base is connected to the other of the first measured parts, and the current flowing through the first base flows without branching between the one of the first measured parts, the second measured part, the other of the first measured parts, and the second base.

8. A rotating electric machine according to claim 1, wherein the connection portion comprises a conductor partially covered by the insulating member, the conductor comprising a base portion extending circumferentially, a coil connection portion protruding from the base portion on the second side, and a measured portion on which the temperature sensor is provided, a plurality of coils partially covered by insulating coating are inserted into the stator core, the coils comprising straight portions which are inserted side by side in the radial direction in slots of the stator core, and end portions which protrude axially from the stator core to the outside, the end portions comprising an inclined portion and a joint portion, the coil connection portion including a first coil connection portion joined to the joint portion, and a second coil connection portion joined to the joint portion and located further away from the base than the first coil connection portion, and the base portion and the second coil connection portion are integrally covered by the insulating member.

9. A rotating electric machine according to claim 6, wherein the stator core is provided within a housing, the connection portion has a fixed portion fixed to the housing, the fixed portion is provided on one circumferential side of the measured portion, the extension portion is provided on the other circumferential side of the measured portion, and the measured portion is provided between the fixed portion and the extension portion.

10. A stator for a rotating electric machine comprising: an annular stator core; a connecting portion covered with an insulating member; and a temperature sensor provided on the connecting portion, wherein the temperature sensor is provided on a first side, which is one radial side, of the insulating member; the insulating member has an extending portion extending in a circumferential direction, the extending portion having a first locking portion protruding toward a second side, which is the other radial side, a second locking portion protruding toward the second side at a position different from the first locking portion in the circumferential direction, and a third locking portion provided on the first side; wherein wiring connected to the temperature sensor passes through a third side, which is one axial side of the insulating member, and is locked by the first locking portion at a fourth side, which is the other axial side of the insulating member; is locked by the second locking portion at the third side; passes through the fourth side of the extending portion, is locked by the third locking portion, and is drawn out to the third side.

11. A rotating electric machine comprising: an annular stator core; a connecting portion covered with an insulating member; and a temperature sensor provided on the connecting portion, wherein the temperature sensor is provided on one radial side of the insulating member; the insulating member has an extending portion extending in a circumferential direction; the extending portion has a first locking portion and a second locking portion provided on the one radial side and a third locking portion provided on the other radial side; and wiring connected to the temperature sensor is routed between the first locking portion and the second locking portion, via one axial side of the extending portion, routed between the second locking portion and the third locking portion, via the other axial side of the extending portion, and drawn out to one axial side at the third locking portion.

12. A rotating electric machine according to claim 11, wherein, of the first, second and third locking portions, at least the third locking portion has a ring-shaped through hole with an opening in a portion thereof, and the wiring is arranged to pass through the through hole.

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