JP2008178222A - Member for fixing temperature detection element and rotary electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member for fixing a temperature detection element in which the fixing position and the fixing power of the temperature detection element are stabilized, and the temperature of the coil can be measured stably and accurately, and to provide a rotary electric machine. <P>SOLUTION: In the bracket 31 for fixing a temperature detection element, a blade portion 32 being inserted from the outer circumferential side of the stator 20, and a wing portion 33 having a groove 34 for fixing the temperature detection element 30 and touching the surface where the groove 34 is formed to the side face of the coil end 22e are formed at a cuffs portion 12 located in a slot 23, i.e. the clearance between the end face of the stator core 21 and the coil end 22e. Width dimension W of the wing portion 33 is set to straddle the cuffs 12 at three or more positions. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a temperature detecting element mounting member for mounting a temperature detecting element for detecting the temperature of a coil provided in a stator of a rotating electric machine, and a rotating electric machine using the temperature detecting element mounting member. More specifically, the present invention relates to a temperature detection element mounting member and a rotating electric machine that stabilize the mounting position and fixing force of the temperature detection element and can accurately measure the temperature of the coil.

  Generally, a rotating electrical machine such as an electric motor generates heat during operation. In particular, when the load on the electric motor becomes excessive, there is a possibility that heat is generated greatly and rapidly. In order to detect this heat generation and prevent damage to the coil or the like, conventionally, a temperature detection element is attached to the coil portion to detect the temperature of the coil. For example, Patent Document 1 discloses an electric motor in which a temperature detection element fixed by a guide is inserted and fixed in a tunnel-like gap in a coil end portion of the electric motor. According to the technique described in this document, the temperature detection element is surely in contact with the coil surface, and the temperature detection element mounting structure is easy to maintain.

Moreover, the part where the temperature becomes the fastest is slightly different even with a stator (stator) of the same specification, depending on the type of motor and its arrangement. For this reason, it is desirable to arrange the temperature detection element at a site where the temperature is expected to be the fastest according to the type of the motor, the type of the mounted machine, and the like. Since this part can be determined to some extent by experiment, the mounting position of the temperature detecting element has been set according to the result. Conventionally, the attachment position is often set above or to the side of the coil, and the temperature detection element is manually attached to the position by marking the position.
Japanese Patent No. 3699025

  However, in the above-described conventional technique, since the guide for holding the temperature detection element is attached to the tunnel-shaped gap of the coil end portion, the temperature can be measured only at the portion between the coil end and the core. Therefore, under the influence of heat dissipation by the core, it cannot be said that the temperature of the coil can be measured appropriately. In general, this position is often different from the most desired position.

  Alternatively, in the method of attaching the temperature detection element manually by an operator, variation in arrangement tends to occur. If there are variations in the arrangement, the detection results also vary, so safety standards had to be set more strictly. In addition, it is necessary to devise such as marking the pallet that conveys the stator so that an unskilled worker does not cause an arrangement error. However, there is a problem that the number of types of pallets increases in this way.

For this reason, in the Japanese Patent Application No. 2006-090348, the present applicant can accurately position the mounting position of the temperature detection element, and can stably and reliably measure the temperature of the stator (stator) coil. Proposed members.
However, the temperature detection element mounting member is finally fixed to the coil by the racing yarn. For this reason, as shown in FIG. 25, there is a possibility that the lacing yarn 13 is not applied to (disengaged from) the temperature detection element attachment member 131. If the lacing yarn is not applied to the temperature detection element mounting member, the fixing force of the temperature detection element mounting member to the coil is reduced, and the temperature detection element cannot be completely brought into contact with the outside of the coil end. It becomes impossible to measure the temperature accurately.

  Therefore, the present invention has been made to solve the above-described problems, and stabilizes the mounting position and fixing force of the temperature detection element, and also enables the temperature of the coil to be measured stably and accurately. It is an object to provide a detection element mounting member and a rotating electrical machine.

The temperature detection element mounting member according to the present invention, which has been made to solve the above-mentioned problems, has a temperature detection element for detecting the temperature of the coil provided in the stator, and is fixed to the coil by a racing yarn that binds the coil end. In the temperature detecting element mounting member, a blade inserted from the outer peripheral side of the stator into a cuff part located between the slots formed in the stator core, which is a gap between the end face of the stator core and the coil And a wing portion for attaching the temperature detecting element to the outside of the coil end of the stator, and the width dimension of the wing portion is determined by the cuff portion. It is characterized by being set to straddle three or more places.
The coil end outer side means a side surface of the coil end (outer end surface in the radial direction of the stator) or an end surface of the coil end (outer end surface in the axial direction of the stator).

In this temperature detection element mounting member, a blade portion inserted from the outer peripheral side of the stator into a cuff portion located between the slots formed in the stator core in the gap between the end surface of the stator core and the coil, An attachment portion for attaching the temperature detection element is formed, and a wing portion for bringing the surface on which the attachment portion is formed into contact with the outside of the coil end of the stator. For this reason, when a blade part is inserted in a cuff part, the surface in which the attaching part was formed among wing parts contacts the coil end outer side. In this state, the temperature detection element mounting member is fixed to the coil by a lacing yarn that binds the coil end. Specifically, the racing yarn is hung on the wing portion, and the temperature detection element mounting member is fixed to the coil.
Thereby, the temperature detection element mounting member is accurately positioned with respect to the stator core and the coil. At this time, since the temperature detection element is attached to the attachment portion, the temperature detection element can be reliably placed in contact with the outside of the coil end. And the temperature detection element can be made to contact the location to measure of a coil by forming the attachment part for attaching a temperature detection element to the desired position of a wing part.

  And in this temperature detection element attachment member, the width dimension of the wing part is set so that three or more cuff parts may be straddled. Here, the width dimension of the wing part means the dimension of the wing part in the circumferential direction of the stator. Thereby, since the racing yarn is passed through the cuff portion, the racing yarn can be reliably applied to the wing portion. As a result, the mounting position and fixing force of the temperature detection element mounting member with respect to the coil can be stabilized, and the temperature detection element can always be completely in contact with the outside of the coil end. Accordingly, the coil temperature can be measured accurately (with high accuracy).

In the temperature detection element mounting member according to the present invention, it is desirable that notches are formed at both ends of the wing.
In addition, the both ends of a wing part mean the both ends in the width direction (the circumferential direction of a stator) of a wing part.

  By forming the notch portion in this way, the racing yarn can be caught in the notch portion and the racing yarn can be prevented from being detached from the wing portion. Thereby, a racing thread | yarn can be reliably hung on the both ends of a wing part. As a result, the mounting position and fixing force of the temperature detection element mounting member on the coil can be further stabilized, and the temperature detection element can be completely brought into contact with the outside of the coil end with certainty. Therefore, the temperature of the coil can be measured more accurately.

  In the temperature detection element mounting member according to the present invention, it is also preferable that the opposite surface of the wing portion on which the mounting surface is formed is anti-slip so that the racing yarn does not slip. .

  By applying the anti-slip process in this way, the racing yarn does not slide on the wing part. This prevents the racing yarn from coming off from the wing part. As a result, the mounting position and fixing force of the temperature detection element mounting member on the coil can be further stabilized, and the temperature detection element can be completely brought into contact with the outside of the coil end with certainty. Therefore, the temperature of the coil can be measured more accurately.

  And as a slip prevention process, the process (slit process) which forms a some slit should just be given. This is because such a simple process prevents the racing yarn from slipping from the wing portion and prevents the racing yarn from coming off the wing portion. In addition to the slit processing, processing for roughening the surface roughness of the wing portion on which the racing yarn is applied may be used.

In the temperature detection element mounting member according to the present invention, it is desirable to have two or more blade portions.
Alternatively, it is preferable that the wing portion has a protrusion that contacts the end surface of the stator core on the traveling side in the racing direction with respect to the blade portion.

  Due to the tension generated in the vertical direction of the racing yarn (the axial direction of the stator) during racing, the temperature detection element mounting member may be inclined (rotated) in the racing direction (see FIG. 13). And if a temperature detection element attachment member will be fixed with respect to a coil in the state inclined, a temperature detection element cannot be made to contact the location which wants to measure a coil. That is, the mounting position of the temperature detection element is shifted. For this reason, there exists a possibility that the temperature of a coil cannot be measured correctly.

  Therefore, in this temperature detection element mounting member, two or more blade portions are provided. Or the protrusion part which contacts the end surface of a stator core is provided in the wing part in the racing direction progress side rather than the blade part. Thereby, it is possible to prevent the temperature detection element mounting member from being inclined (rotated) in the racing direction by the tension generated in the vertical direction (axial direction of the stator) of the racing yarn during racing. Therefore, the temperature detection element can be surely brought into contact with a position to be measured on the coil. As a result, the temperature of the coil can be measured more accurately.

  In the temperature detecting element mounting member according to the present invention, it is desirable that a through hole is formed in the wing portion.

  When the varnish treatment is performed on the stator, the varnish cannot be dropped and impregnated in the portion where the wing portion is located (the coil covered by the wing portion). That is, the wing part impedes varnish impregnation into the coil (see FIG. 19). For this reason, the varnish impregnation to the coil in which the wing part is located depends on the permeation from the periphery. As a result, the varnish fixing force of the coil is partially reduced, which may cause a reduction in the performance of the stator.

  Therefore, in this temperature detection element mounting member, a through hole for allowing the dropped varnish to pass through the wing is formed in the wing. Thereby, since a varnish can be directly adhered to the coil in which a wing part is located through a through hole, a varnish can be impregnated in a coil without lack. Therefore, the varnish fixing force of the coil can be made uniform, and the performance of the stator does not deteriorate.

  The number of through holes provided in the wing portion may be one or plural, but it is preferable to increase the opening area as much as possible within the allowable range of strength of the temperature detection element mounting member (wing portion). By doing so, the varnish can be reliably adhered to the coil where the wing portion is located without deficiency, and the varnish can be reliably impregnated into the coil without deficiency.

  The rotating electrical machine according to the present invention, which has been made to solve the above problems, is a rotating electrical machine to which a temperature detecting element for detecting the temperature of a coil provided in a stator is attached, wherein the temperature detecting element is claimed in claims 1 to 4. It is attached by any one temperature detection element attachment member described in Item 7.

  In this rotating electrical machine, since the temperature detection element is attached by any one of the temperature detection element attachment members described above, the temperature of the coil can be measured stably and accurately.

  According to the temperature detection element mounting member and the rotating electric machine according to the present invention, as described above, the mounting position and fixing force of the temperature detection element can be stabilized and the coil temperature can be measured stably and accurately.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a most preferred embodiment in which a temperature detection element mounting member and a rotating electrical machine according to the present invention are embodied will be described in detail with reference to the drawings. In the following embodiments, a case will be described in which the temperature is detected on the side surface of the coil end (end portion in the radially outward direction of the stator).

(First embodiment)
First, the first embodiment will be described. Therefore, a temperature detection element mounting bracket and a motor using the temperature detection element mounting bracket according to the first embodiment will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a schematic configuration of the motor according to the first embodiment. FIG. 2 is a perspective view showing the temperature detection element mounting bracket according to the first embodiment. FIG. 3 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the first embodiment is mounted on the stator. FIG. 4 is a diagram showing the arrangement positions of the temperature detection elements in a state where the temperature detection element mounting bracket according to the first embodiment is mounted on the stator. FIG. 5 is a diagram showing the arrangement positions of the temperature detection elements in a state where the temperature detection element mounting bracket according to the first embodiment is mounted on the stator. FIG. 6 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the first embodiment is fixed to the coil with a racing yarn.

  As shown in FIG. 1, the motor 10 according to the present embodiment is configured such that a stator 20 and a rotor (not shown) are housed in a case 11. The stator 20 is obtained by winding a coil 22 around a substantially annular stator core 21. The stator core 21 is configured by laminating a plurality of electromagnetic steel plates and integrally bonding them. A large number of slots 23 are provided on the inner peripheral surface of the stator core 21, and one coil 22 is wound around the plurality of slots 23 (see FIG. 5). That is, the stator 20 is a so-called distributed winding stator. In a slot 23 formed in the stator core 21, a slot paper (not shown) for ensuring insulation between the stator core 21 and the coil 22 is inserted and arranged with an end protruding from the stator core 21. Thus, a cuff portion 12 is formed with a gap between the end face of the stator core 21 and the coil 22. A temperature detection element 30 is attached to the stator 20 by a temperature detection element attachment bracket 31.

  Here, the temperature detection element mounting bracket 31 includes a blade portion 32 and a wing portion 33 as shown in FIG. The blade part 32 is a part inserted into the cuff part 12. The blade portion 32 has a tapered shape with a width that decreases toward the tip, and is formed so that the height gradually decreases toward the tip at the tip 32a. Thereby, the insertion to the cuff part 12 is performed smoothly.

  The wing portion 33 has a substantially T-shape formed so as to rise from the rear end portion of the blade portion 32, and is a portion that contacts the side surface of the coil end 22 e of the coil 22. The wing portion 33 has a curved surface having substantially the same curvature as the outer peripheral surface of the stator core 21. And as shown in FIG. 6, the width dimension (circumferential direction length) W is set so that the cuff part 12 may be straddled three or more places.

A groove 34 for attaching the temperature detection element 30 is formed on the inner side surface 33 i of the wing portion 33. This groove 34 corresponds to the mounting portion of the present invention. The temperature detection element 30 is bonded to the groove 34. Thus, when the temperature detection element mounting bracket 31 is arranged on the stator 20 as shown in FIG. 3, the temperature detection element 30 is arranged at a predetermined position on the side surface of the coil end 22e as shown in FIGS. It has become so. As a result, the temperature detection element 30 can be accurately arranged at a desired temperature measurement location on the side surface of the coil end 22e by a simple operation of inserting the blade portion 32 of the temperature detection element mounting bracket 31 into the predetermined cuff portion 12. Can do.
The temperature detecting element 30 may be anything as long as it can measure the coil temperature, such as a thermocouple contact or thermistor.

  The temperature detection mounting bracket 31 having the above-described configuration is fixed to the coil 22 by a racing yarn after the blade portion 32 is inserted into the predetermined cuff portion 12 and attached to the stator 20. At this time, the cuff part 12 in which the blade part 32 is inserted is removed and racing is performed. For this reason, when the width dimension of the wing part is small as in the conventional temperature detection mounting bracket, there is a possibility that the lacing yarn does not hang on the wing part, or even if it hangs off.

  On the other hand, in the temperature detection element mounting bracket 31 according to the present embodiment, the width dimension W of the wing portion 33 is set so as to straddle the cuff portion 12 at three or more locations. For this reason, as shown in FIG. 6, the lacing yarn 13 can be reliably hung on the wing portion 33. As a result, the mounting position and fixing force of the temperature detection element mounting bracket 31 with respect to the coil 22 can be stabilized, and the temperature detection element 30 can always be brought into complete contact with the side surface of the coil end 22e. Therefore, the temperature of the coil 22 can be measured accurately (with high accuracy).

As described above in detail, according to the temperature detection element mounting bracket 31 according to the first embodiment, the blade part 32 inserted into the cuff part 12 from the outer peripheral side of the stator 20 and the temperature detection element 30 are mounted. The groove 34 is formed, and the wing portion 33 that contacts the side surface of the coil end 22e with the surface on which the groove 34 is formed is included. Therefore, the temperature detection element 30 can be formed simply by inserting the blade portion 32 into the predetermined cuff portion 12. The coil end 22e can be accurately placed at a desired temperature measurement location on the side surface.
And since the width dimension W of the wing part 33 is set so that the cuff part 12 may be straddled three or more places, the racing thread | yarn 13 can be reliably applied to the wing part 33. FIG. Thereby, since the temperature detection element mounting bracket 31 is firmly fixed to the coil 22, the mounting position and fixing force of the temperature detection element mounting bracket 31 with respect to the coil 22 can be stabilized, and the temperature detection element 30 is always provided. Can be brought into full contact with the side surface of the coil end 22e. Therefore, the temperature of the coil 22 can be measured accurately (with high accuracy).

  Further, according to the motor 10 according to the first embodiment, since the temperature detection element 30 is fixed to the coil 22 by the temperature detection element mounting bracket 31 described above, the temperature of the coil 22 is provided. Can be measured accurately (with high accuracy).

(Second Embodiment)
Next, a second embodiment will be described. The second embodiment has the same basic configuration as the first embodiment, but has a slightly different wing shape. For this reason, in the following description, it demonstrates centering around difference, and attaches | subjects the same code | symbol in a drawing about the thing of the same structure, and abbreviate | omits the description suitably.

  Therefore, a temperature detection element mounting bracket according to a second embodiment will be described with reference to FIGS. FIG. 7 is a perspective view showing a temperature detection element mounting bracket according to the second embodiment. FIG. 8 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the second embodiment is fixed to the coil by the racing yarn.

As shown in FIG. 7, the temperature detection element mounting bracket 31 a according to the second embodiment has a blade portion 32 and a wing portion 33 as in the first embodiment, and the width dimension of the wing portion 33. Is set to straddle three or more cuffs. And notches 35 are formed at both ends of the wing 33.
For this reason, when the temperature detection element mounting bracket 31a is arranged on the stator core 21 and racing with the racing yarn is performed, the racing yarn 13 is caught (entered) into the cut portion 35 as shown in FIG. Thus, the lacing yarn 13 can be prevented from being detached. Thereby, the lacing yarn 13 can be reliably hung on both ends of the wing portion 33.

  As described above in detail, according to the temperature detection element mounting bracket 31a according to the second embodiment, the notches 35 and 35 are formed at both ends of the wing 33, so the wing 33 The lacing yarn 13 can be reliably hung on both ends. Thereby, the attachment position and fixing force with respect to the coil 22 of the temperature detection element attachment bracket 31a can be further stabilized, and the temperature detection element 30 can be completely brought into contact with the side surface of the coil end 22e. Therefore, the temperature of the coil 22 can be measured more accurately.

(Third embodiment)
Next, a third embodiment will be described. The third embodiment has the same basic configuration as the first embodiment, but the shape of the outer surface of the wing part is slightly different. For this reason, in the following description, it demonstrates centering around difference, and attaches | subjects the same code | symbol in a drawing about the thing of the same structure, and abbreviate | omits the description suitably.

Therefore, a temperature detection element mounting bracket according to a third embodiment will be described with reference to FIG. FIG. 9 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the third embodiment is fixed to the coil with a racing yarn.
As shown in FIG. 9, the temperature detection element mounting bracket 31 b according to the third embodiment has a blade portion 32 and a wing portion 33 as in the first embodiment, and the width dimension of the wing portion 33. Is set to straddle three or more cuffs. A large number of slits 36 are formed on the outer surface 33 o of the wing portion 33.

  For this reason, when the temperature detection element mounting bracket 31 b is arranged on the stator core 21 and racing is performed using the racing yarn 13, the racing yarn 13 positioned on the outer surface 33 o of the wing portion 33 is less likely to slip due to the slit 36. As a result, the racing yarn 13 can be prevented from being detached from the wing portion 33, so that the racing yarn 13 can be reliably hung on the wing portion 33.

  As described above, according to the temperature detection element mounting bracket 31b according to the third embodiment, since the plurality of slits 36 are formed on the outer surface 33o of the wing portion 33, the wing portion 33 is raced. The yarn 13 can be reliably hung. Thereby, the attachment position and fixing force with respect to the coil 22 of the temperature detection element attachment bracket 31b can be further stabilized, and the temperature detection element 30 can be completely brought into contact with the side surface of the coil end 22e. Therefore, the temperature of the coil 22 can be measured more accurately.

(Fourth embodiment)
Next, a fourth embodiment will be described. The fourth embodiment has the same basic configuration as the first embodiment, but differs in that it has two blade portions. For this reason, in the following description, it demonstrates centering around difference, and attaches | subjects the same code | symbol in a drawing about the thing of the same structure, and abbreviate | omits the description suitably.
Therefore, a temperature detection element mounting bracket according to a fourth embodiment will be described with reference to FIGS. FIG. 10 is a perspective view showing a temperature detection element mounting bracket according to the fourth embodiment. FIG. 11 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the fourth embodiment is mounted on the stator. FIG. 12 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the fourth embodiment is fixed to the coil by the racing yarn.

  As shown in FIGS. 10 and 11, the temperature detection element mounting bracket 31 c according to the fourth embodiment includes a total of two blade portions 32 and 32, one at each end. Each blade portion 32 is formed at both end portions (end portions in the stator circumferential direction) of the temperature detection element mounting bracket 31c. For this reason, the shape of the wing part 33 is slightly different from the above-described embodiment (one blade part). That is, in the present embodiment, the shape of the wing portion 33 is a substantially inverted U shape. The temperature detection element mounting bracket 31c is disposed on the stator core 20 with each blade portion 32 inserted into a predetermined cuff portion 12 such that one cuff portion 12 is positioned between the two blade portions 32, 32. The

  Here, when the number of blade portions 32 is one as in the first to third embodiments described above, the racing yarn 13 is generated in the vertical direction (stator axial direction) during racing as shown in FIG. The temperature detecting element mounting bracket 31 (31a, 31b) may be inclined (rotated) in the racing direction due to the tension applied. FIG. 13 is an explanatory diagram for explaining the cause of the inclination of the temperature detection element mounting bracket when there is one blade portion. If the temperature detection element mounting bracket 31 (31a, 31b) is fixed with respect to the coil 22 in a tilted state, the temperature detection element 30 cannot be brought into contact with the portion of the coil 22 to be measured. That is, the mounting position of the temperature detection element 30 is shifted. For this reason, there is a possibility that the 22 temperature of the coil cannot be accurately measured.

  In contrast, in the temperature detection element mounting bracket 31c according to the fourth embodiment, the blade portions 32 are provided at both ends thereof. That is, two blade portions 32 are provided. For this reason, as shown in FIG. 12, it is possible to prevent the temperature detection element mounting bracket 31c from being inclined (rotated) in the racing direction by the tension generated in the vertical direction (stator axial direction) of the racing yarn 13 during racing. it can. Therefore, the temperature detection element 30 can be reliably brought into contact with the portion of the coil 22 that is desired to be measured. Further, since the cuff portion 12 through which the lacing yarn 13 is passed between the blades 32 and 32 exists, the lacing yarn 13 can be reliably hung on the wing portion 33.

Here, a modification will be described with reference to FIG. FIG. 14 is a diagram illustrating a modification of the fourth embodiment. In the above-described fourth embodiment, the blade portions 32 and 32 are provided apart from each other at the end portions. However, as shown in FIG. 14, the blade portions 32 and 32 may be provided adjacent to each other. In other words, the blade portions 32 and 32 can be provided so that the blade portions 32 and 32 are arranged in the adjacent cuff portions 12 and 12. Even if the blade portions 32 are provided in this way, it is possible to prevent the temperature detection element mounting bracket 31cm from being inclined (rotated) in the racing direction during racing.
However, in this case, in order to reliably hang the racing yarn 13 on the wing portion 33, it is necessary to set the width dimension of the wing portion 33 so as to straddle the cuff portion 12 or more.

  As described above in detail, according to the temperature detecting element mounting bracket 31c according to the fourth embodiment, since the two blade portions 32 are provided at each of the both ends, a temperature at the time of racing. The detection element mounting bracket 31c can be prevented from being tilted (rotated) in the racing direction, the temperature detection element 30 can be reliably brought into contact with the portion to be measured of the coil 22, and the lacing yarn 13 can be brought into contact with the wing portion 33. It can be reliably hung on. Thereby, the attachment position and fixing force with respect to the coil 22 of the temperature detection element attachment bracket 31c can be further stabilized, and the temperature detection element 30 can be completely brought into contact with the side surface of the coil end 22e. Therefore, the temperature of the coil 22 can be measured more accurately.

(Fifth embodiment)
Next, a fifth embodiment will be described. The fifth embodiment has the same basic configuration as the first embodiment, but differs in that it includes a protrusion that contacts the end face of the stator core. For this reason, in the following description, it demonstrates centering around difference, and attaches | subjects the same code | symbol in a drawing about the thing of the same structure, and abbreviate | omits the description suitably.
Therefore, a temperature detection element mounting bracket according to a fifth embodiment will be described with reference to FIGS. 15 and 16. FIG. 15 is a perspective view showing a temperature detection element mounting bracket according to the fifth embodiment. FIG. 16 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the fifth embodiment is fixed to the coil by the racing yarn.

As shown in FIGS. 15 and 16, the temperature detection element mounting bracket 31 d according to the fifth embodiment is provided with protrusions 37, 37 extending downward at both ends of the wing portion 33. The protrusion 37 comes into contact with the end surface of the stator core 21 when the temperature detection element mounting bracket 31 d is disposed on the stator 20.
Accordingly, as shown in FIG. 16, it is possible to prevent the temperature detection element mounting bracket 31d from being inclined (rotated) in the racing direction by the tension generated in the vertical direction (stator axial direction) of the racing yarn 13 during racing. it can. Therefore, the temperature detection element 30 can be reliably brought into contact with the portion of the coil 22 that is desired to be measured. Further, since the cuff portion 12 through which the lacing yarn 13 is passed exists between the blade portion 32 and the protrusion 37, the lacing yarn 13 can be reliably hung on the wing portion 33.
In the present embodiment, the projections 37 are provided at both ends, but only one projection 37 may be provided on the traveling side in the racing direction with respect to the blade portion 32 (only the projection located on the left side in FIG. 16). Even in this case, it is possible to prevent the temperature detection element mounting bracket 31d from being inclined during racing.

  As described above in detail, according to the temperature detection element mounting bracket 31d according to the fifth embodiment, the wings 33 are provided with the protrusions 37 and 37 that contact the end face of the stator core 21 at both ends. Sometimes the temperature detection element mounting bracket 31d can be prevented from tilting (rotating) in the racing direction, the temperature detection element 30 can be reliably brought into contact with the portion to be measured of the coil 22, and the lacing yarn 13 can be winged. The portion 33 can be reliably hung. Thereby, the attachment position and fixing force with respect to the coil 22 of the temperature detection element attachment bracket 31d can be further stabilized, and the temperature detection element 30 can be completely brought into contact with the side surface of the coil end 22e. Therefore, the temperature of the coil 22 can be measured more accurately.

(Sixth embodiment)
Finally, a sixth embodiment will be described. The sixth embodiment has the same basic configuration as the first embodiment, but differs in that a through hole is formed in the wing portion. For this reason, in the following description, it demonstrates centering around difference, and attaches | subjects the same code | symbol in a drawing about the thing of the same structure, and abbreviate | omits the description suitably.
Therefore, a temperature detection element mounting bracket according to a sixth embodiment will be described with reference to FIGS. 17 and 18. FIG. 17 is a perspective view showing a temperature detection element mounting bracket according to the sixth embodiment. FIG. 18 is a diagram illustrating a state in which the temperature detection element mounting bracket according to the sixth embodiment is fixed to the coil by the racing yarn.

  As shown in FIGS. 17 and 18, the temperature detection element mounting bracket 31 e according to the sixth embodiment includes a through hole 38 in the wing portion 33. The through hole 38 is a horizontally long hole formed in the approximate center of the wing portion 33.

  Here, in the above-described first to fifth embodiments, as shown in FIG. 19, when the varnish treatment is performed on the stator 20, the wing portion 33 is located (covered by the wing portion 33). The coil 22 cannot be directly impregnated with the varnish 41 dropped from the dropping nozzle 40. That is, the wing part 33 impedes varnish impregnation into the coil 22. For this reason, impregnation of the varnish into the coil 22 where the wing portion 33 is located depends on penetration from the periphery. For this reason, the varnish adhering force of the coil 22 is partially reduced, and there is a possibility that the performance of the stator 20 is reduced. In addition, FIG. 19 is explanatory drawing for demonstrating the cause in which the varnish impregnation with respect to a coil is partially insufficient.

  On the other hand, in the temperature detection element mounting bracket 31e according to the sixth embodiment, since the wing portion 33 includes the through hole 38, the varnish 41 dripped from the dripping nozzle 40 passes through the through hole 38. Thus, the varnish 41 can be directly adhered to the coil 22 where the wing portion 33 is located. As a result, the varnish 41 can be impregnated even in the coil 22 where the wing portion 33 is located.

  Here, a modified example will be described with reference to FIGS. FIG. 20 is a diagram illustrating a modification of the sixth embodiment in which two through holes are provided in the wing portion. FIG. 21 is a diagram showing a modification of the sixth embodiment in which a large number of through holes are provided in the wing portion. In the sixth embodiment described above, only one elongated hole 38 is provided in the wing 33, but two circular through holes 38a may be provided as shown in FIG. As shown in FIG. 21, a large number of small circular through holes 38b can be provided. Thus, by providing a plurality of through holes 38a and 38b, the varnish 41 can be impregnated into the coil 22 where the wing portion 33 is located without being insufficient.

  As described above, according to the temperature detection element mounting bracket 31e according to the sixth embodiment, since the wing portion 33 includes the through hole 38, the varnish 41 dripped from the dripping nozzle 40 penetrates. It passes through the hole 38 and adheres directly to the coil 22. For this reason, since the varnish 41 can be impregnated even in the coil 22 where the wing portion 33 is located, the varnish fixing force of the coil 22 can be made uniform without being partially reduced, and the stator 20 performance degradation does not occur.

  It should be noted that the above-described embodiment is merely an example and does not limit the present invention in any way, and various improvements and modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the case where the temperature detection element 30 is disposed on the side surface of the coil end 22e has been described. However, as shown in FIG. 22, the wing portion 33a is formed in an L shape so that the coil end 22e is formed. The temperature detecting element 30 can also be disposed on the end face of the.

  Moreover, a temperature detection element attachment bracket can also be comprised combining the above-mentioned 1st-6th embodiment arbitrarily. For example, as shown in FIG. 23, the temperature detection element mounting bracket 31f can be configured by combining the second, fifth, and sixth embodiments. Thus, a synergistic effect can be acquired by combining each embodiment.

  In the above-described embodiment, the wing portion in which the groove 34 is formed in the circumferential direction of the stator is illustrated. However, the formation direction of the groove 34 is not limited to this direction. For example, as shown in FIG. It can also be formed in the axial direction.

It is sectional drawing which shows schematic structure of the motor which concerns on 1st Embodiment. It is a perspective view which shows the temperature detection element attachment bracket which concerns on 1st Embodiment. It is a figure which shows the state which attached the temperature detection element attachment bracket which concerns on 1st Embodiment to the stator. It is a figure which shows the arrangement position of the temperature detection element in the state which attached the temperature detection element attachment bracket which concerns on 1st Embodiment to the stator. It is a figure which shows the arrangement position of the temperature detection element in the state which attached the temperature detection element attachment bracket which concerns on 1st Embodiment to the stator. It is a figure which shows the state by which the temperature detection element attachment bracket which concerns on 1st Embodiment was fixed with respect to the coil with the racing thread | yarn. It is a perspective view which shows the temperature detection element attachment bracket which concerns on 2nd Embodiment. It is a figure which shows the state by which the temperature detection element attachment bracket which concerns on 2nd Embodiment was fixed with respect to the coil with the racing thread | yarn. It is a figure which shows the state by which the temperature detection element attachment bracket which concerns on 3rd Embodiment was fixed with respect to the coil with the racing thread | yarn. It is a perspective view which shows the temperature detection element attachment bracket which concerns on 4th Embodiment. It is a figure which shows the state which attached the temperature detection element attachment bracket which concerns on 4th Embodiment to the stator. It is a figure which shows the state by which the temperature detection element attachment bracket which concerns on 4th Embodiment was fixed with respect to the coil with the racing thread | yarn. It is explanatory drawing for demonstrating the cause which a temperature detection element attachment bracket inclines in the case of one blade part. It is a figure which shows the modification in 4th Embodiment. It is a perspective view which shows the temperature detection element attachment bracket which concerns on 5th Embodiment. It is a figure which shows the state by which the temperature detection element attachment bracket which concerns on 5th Embodiment was fixed with respect to the coil with the racing thread | yarn. It is a perspective view which shows the temperature detection element attachment bracket which concerns on 6th Embodiment. It is a figure which shows the state by which the temperature detection element attachment bracket which concerns on 6th Embodiment was fixed with respect to the coil with the racing thread | yarn. It is explanatory drawing for demonstrating the cause in which the varnish impregnation with respect to a coil is partially insufficient. It is a figure which shows the modification of 6th Embodiment which provided two through-holes in the wing part. It is a figure which shows the modification of 6th Embodiment which provided many through-holes in the wing part. It is sectional drawing which shows the temperature detection element attachment bracket which arrange | positions a temperature detection element in a coil end end surface. It is a perspective view which shows the temperature detection element attachment bracket which combined 2nd, 5th, and 6th embodiment. It is sectional drawing which shows a temperature detection element attachment bracket provided with the wing part which formed the groove | channel in the stator axial direction. It is explanatory drawing for demonstrating the problem in the conventional temperature detection element attachment bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Motor 11 Case 12 Cuff part 13 Racing thread 20 Stator 21 Stator core 22 Coil 22e Coil end 30 Temperature detection element 31 Temperature detection element attachment bracket 32 Blade part 33 Wing part 33i Inner side face 33o Outer side face 34 Groove (attachment part)
35 Notch 36 Slit 37 Projection 38 Through-hole

Claims (8)

In the temperature detection element mounting member, to which the temperature detection element for detecting the temperature of the coil provided in the stator is attached, and fixed to the coil by the lacing thread that binds the coil end,
A blade portion inserted from an outer peripheral side of the stator into a cuff portion located between slots formed in the stator core, which is a gap between an end surface of the stator core and the coil;
A mounting portion for attaching the temperature detection element is formed, and has a wing portion for bringing the mounting portion into contact with the coil end outside of the stator,
The temperature detection element mounting member, wherein a width dimension of the wing portion is set so as to straddle the cuff portion at three or more locations. In the temperature detection element mounting member according to claim 1,
A temperature detection element mounting member, wherein notches are formed at both ends of the wing. In the temperature detection element mounting member according to claim 1 or 2,
An anti-slip process is applied to the opposite surface of the wing portion where the attachment surface is formed so that the racing yarn does not slip. In the temperature detection element mounting member according to claim 3,
An anti-slip process is a process for forming a plurality of slits. In any one temperature detection element attachment member described in Claims 1-4,
A temperature detection element mounting member having two or more blade portions. In any one temperature detection element attachment member described in Claims 1-4,
The temperature detection element mounting member, wherein the wing part has a protrusion part that contacts the end face of the stator core on the traveling side in the racing direction with respect to the blade part. In any one temperature detection element attachment member described in Claims 1-6,
A temperature detection element mounting member, wherein a through hole is formed in the wing portion. In a rotating electrical machine equipped with a temperature detection element that detects the temperature of a coil provided in a stator,
The rotating electrical machine, wherein the temperature detection element is attached by any one temperature detection element attachment member according to claim 1.

Images