JP2013165615A - Positioning device of segment coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a positioning device of a segment coil capable of accurately positioning an end part of the segment coil by increasing the device rigidity and shortening a dimension of a stator in an axial direction.SOLUTION: A positioning device 10 is formed with a lower side housing part 13 in a circumferential shape provided with a plurality of lower side ditches 17 for aligning a segment end part pair 117, a lower plate 11 whose cross-sectional shape of a portion between adjacent lower side housing parts 13 is L-shaped and an upper side housing part 33 provided with a plurality of upper side ditches 37 for aligning a segment end part pair 117 is formed in a circumferential shape, a cross-sectional shape of a portion between adjacent upper side housing part 33 is a crank shape, an upper plate 31 equipped with a rib 38 extended in a stator axis direction is provided, the lower plate 11 and the upper plate 31 are relatively rotated, and the segment end part pair 117 is clamped by the lower side ditches 17 and the upper side ditches 37 and is positioned.

Description

  The present invention relates to a positioning device that positions an end portion of a segment coil inserted into a stator core. More specifically, the present invention relates to a segment coil positioning device that positions the ends of a pair of segment coils to be welded.

  Conventionally, a stator using a segment coil is known. When manufacturing such a stator, after inserting the segment coil formed in the predetermined shape into the slot of the stator core, the end portions (end portion pair) of the segment coils are welded together. When the ends of the pair of segment coils are welded, the segment coils inserted into the slots of the stator core are positioned by the segment coil positioning device.

As this segment coil positioning device, for example, there is one described in Patent Document 1. The positioning device described in Patent Document 1 has a lower end pair pair insertion window into which a segment end pair group is inserted, and a lower side having a lower projecting portion inserted between the segment end pair pairs. It has a plate. Moreover, it has the upper side plate which has an upper side edge pair pair insertion window where a segment edge part pair group is inserted, and has an upper side protrusion part inserted between segment edge part pairs. And the drive part which rotates a lower side plate to the 1st circumferential direction and an upper side plate to the 2nd circumferential direction is provided.
Thereby, in this positioning device, the segment end pair can be positioned at a time by rotating the lower plate and the upper plate by the drive unit.

Japanese Patent Laid-Open No. 2005-130577

  However, in the conventional positioning device, in order to align the segment coils, a clamp portion (contact portion between the plate and the coil) corresponding to the thickness of each plate (for two plates) is necessary. Therefore, it is difficult to shorten the terminal portion of the segment coil, and there is a problem that the stator (motor) becomes large in the axial direction.

  Accordingly, the present invention has been made to solve the above-described problems, and can increase the rigidity of the apparatus to accurately position the segment coil end and reduce the axial dimension of the stator. An object of the present invention is to provide a segment coil positioning device capable of performing

One aspect of the present invention made in order to solve the above-described problems is to position a pair of segment coil ends in order to weld the end portions of the segment coils protruding from the stator core among the segment coils inserted into the slots of the stator core. In the segment coil positioning device, the plurality of segment ends inserted into one slot are accommodated with their tips protruding, and a first groove for aligning the pair of segment coil ends Are formed in a circumferential shape, the cross-sectional shape of the portion between the adjacent first accommodating portions is L-shaped, and the first plate disposed on the end surface of the stator core, 1 A plurality of segment ends inserted into one slot are accommodated with their tips protruding, and a pair of segments A second housing portion having a plurality of second grooves for aligning the end portions of the cylinder is formed in a circumferential shape, and a cross-sectional shape of a portion between adjacent second housing portions forms a crank shape, and a stator is formed in this portion. A rib extending in the axial direction, and a second plate partially inserted into the first plate and disposed on the first plate, the first plate and the second plate The second plate is relatively rotated, and the pair of segment coil ends are clamped and positioned by the first groove and the second groove.

  In this segment coil positioning apparatus, the segment coil end portions are accommodated in the first accommodating portion and the second accommodating portion, and the first plate and the second plate are relatively rotated. Then, the pair of segment coil ends are clamped by the first groove and the second groove, and the segment coil ends are positioned at a stroke.

  And in this segment coil positioning device, the cross-sectional shape of the portion between the adjacent first accommodating portions of the first plate forms an L-shape, and the portion of the second plate between the adjacent second accommodating portions. The cross-sectional shape is a crank shape, and a rib extending in the stator axial direction is provided at this portion. Thereby, each rigidity of a 1st plate and a 2nd plate can be improved. As a result, when positioning the segment coil end, each plate can be prevented from being distorted, and therefore the segment coil end can be positioned with high accuracy.

  Moreover, since the 1st plate and the 2nd plate have comprised the shape mentioned above, the contact area of a segment coil and each plate is fully securable. As a result, heat generated by welding can be released to each plate, so that the insulating coating of the segment coil is not thermally damaged during welding.

In addition, since the first plate and the second plate have the shapes described above, when aligning the segment coil ends, a part of the second plate is inserted into the first plate and the plates are overlapped. can do. Thereby, since the clamp part in a segment coil edge part can be made small, the terminal part of a segment coil can be shortened by that much. As a result, the axial dimension of the stator (motor) can be shortened.
Furthermore, since the stroke distance between the first plate and the second plate can be increased, the interference between the weld ball and each plate can be avoided.

  In the above-described segment coil positioning device, the first plate has a tapered guiding portion that guides a segment coil end portion in the first housing portion at a corner portion of the first housing portion on the stator core side arrangement surface. Is preferably formed.

  By forming such a guide portion, when the segment coil end portion is accommodated in the first accommodating portion and the second accommodating portion, the position variation of the segment coil end portion is absorbed to ensure the segment coil end portion. It can accommodate in a 1st accommodating part and a 2nd accommodating part. Thereby, even if the position of the segment coil end portion is largely deviated, the segment coil end portion can be positioned reliably and with high accuracy.

  In the segment coil positioning device, the first plate and the second plate are each preferably a conductor.

  Thus, when the first plate and the second plate are conductors, when the pair of segment coil ends are clamped by the first groove and the second groove, the first plate, the second plate, and the segment coil end Each part can be made conductive. Thereby, when welding segment coil edge parts, grounding can be taken from contact with a segment coil edge part. Therefore, welding requiring grounding such as TIG welding can be easily performed.

  According to the segment coil positioning apparatus of the present invention, as described above, the rigidity of the apparatus can be increased to accurately position the segment coil end, and the axial dimension of the stator can be shortened.

It is a perspective view which shows partially the stator by which the segment coil was inserted by which the segment coil was inserted in the slot of the stator core. It is sectional drawing which shows schematic structure of a positioning device. It is a perspective view of the lower plate seen from the upper surface side (upper plate side). It is a perspective view of the lower plate seen from the lower surface side (stator core side). It is a perspective view which shows the lower side accommodating part vicinity of the lower plate seen from the stator core side. It is a perspective view of the upper plate seen from the upper surface side. It is a perspective view of the upper plate seen from the lower surface side (lower plate side). It is a perspective view which shows the upper side accommodating part vicinity of the upper plate seen from the lower plate (stator core side). It is a figure which shows the cross-sectional shape of the part between each accommodating part of each plate. It is a figure which shows the state which accommodated the segment edge part pair in each accommodating part. It is the figure which expanded the accommodating part vicinity shown in FIG. It is a figure which shows the state before accommodating the segment coil edge part in each accommodating part in the case where the position shift of the segment coil edge part is large. It is a figure which shows the state after accommodating the segment coil edge part in each accommodating part in the case where the position shift of a segment coil edge part is large. It is a figure which shows the state which performed positioning of a segment edge part pair. It is the figure which expanded the accommodating part vicinity shown in FIG. It is a figure which shows the cross-sectional shape of the part between each accommodating part of each plate in the state which performed positioning of a segment edge part pair. It is a perspective view which shows partially the stator manufactured using the positioning device which concerns on this Embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a segment coil positioning device according to the present invention will be described below in detail with reference to the drawings.
Therefore, first, the stator with the segment coil inserted in a state before the segment coil is positioned by the positioning device according to the present embodiment will be described with reference to FIG. FIG. 1 is a perspective view partially showing a stator in which a segment coil has been inserted into which a segment coil has been inserted into a slot of a stator core.

  As shown in FIG. 1, the stator 100 includes a stator core 101 having a slot 103 and a segment coil 111 inserted into the slot 103. The stator core 101 has an annular shape, and has an upper surface (lead side) 101A and a lower surface (non-lead side) 101B perpendicular to the axial direction thereof. The stator core 101 is configured by laminating a plurality of steel plates in the axial direction. The stator core 101 is formed with a plurality of (48 in this embodiment) slots 103 penetrating in the axial direction. Each slot 103 opens radially inward and extends radially outward. These slots 103 are radially arranged at a predetermined interval in the circumferential direction.

  The segment coil 111 is formed by forming a copper wire having a rectangular cross section into a substantially U shape, and includes two leg portions 112 and a connecting portion 113 for connecting them. The segment coil 111 is entirely covered with enamel, but the tip end side of the leg 112 is in a state where such enamel coating is peeled off for welding and connection later. A plurality of such segment coils 111 are inserted into the respective slots 103 via the slot insulating paper 107.

  Specifically, each segment coil 111 has a segment coil end portion 115 that is a part of the leg portion 112 and is an end portion protruding from the upper surface 101 A of the stator core 101, and the connecting portion 113 is a lower surface of the stator core 101. Each of them is inserted into the slot 103 in a state of protruding from 101B. A pair of segment coil ends 115 adjacent to each other in the radial direction and welded to each other later form a segment end pair 117. Further, a plurality of segment end pairs 117 are arranged in the radial direction (in this embodiment, 5 pairs) and arranged in one slot 103 to constitute a segment end pair group 119. A plurality of segment end pair groups 119 are arranged side by side in a circumferential direction at a predetermined interval (48 groups in this embodiment).

  Next, the positioning device according to the present embodiment will be described with reference to FIGS. FIG. 2 is a cross-sectional view showing a schematic configuration of the positioning device. FIG. 3 is a perspective view of the lower plate viewed from the upper surface side (upper plate side). FIG. 4 is a perspective view of the lower plate viewed from the lower surface side (stator core side). FIG. 5 is a perspective view showing the vicinity of the lower housing portion of the lower plate as seen from the stator core side. FIG. 6 is a perspective view of the upper plate as viewed from the upper surface side. FIG. 7 is a perspective view of the upper plate viewed from the lower surface side (lower plate side). FIG. 8 is a perspective view showing the vicinity of the upper accommodating portion of the upper plate as viewed from the lower plate (stator core side). FIG. 9 is a diagram showing a cross-sectional shape of a portion between each accommodating portion of each plate.

  As shown in FIG. 2, the positioning device 10 includes a housing 10 </ b> A having support columns, a lower plate (first plate) 11 disposed on the upper surface 101 </ b> A side of the stator core 101, and an upper disposed on the lower plate 11. A plate (second plate) 31 is provided. Further, the positioning device 10 includes a drive unit 70 that rotates the lower plate 11 and the upper plate 31.

  As shown in FIGS. 3 and 4, the lower plate 11 is a conductor made of a spring steel material and has a disk shape with a thickness of several mm. The lower plate 11 has a plurality (48 in this embodiment) of lower accommodating portions (first accommodating portions) 13 corresponding to each segment end pair group 119. Each of the lower accommodating portions 13 extends in the radial direction and is arranged radially in the circumferential direction. In these lower accommodating portions 13, segment end pair groups 119 are respectively inserted in a state where the distal end side of each segment coil end portion 115 protrudes from the lower plate 11 (see FIG. 9). .

  As shown in FIG. 5, the lower inner peripheral wall 15 constituting each lower accommodating portion 13 has a lower groove (first groove) 17 on one side (clockwise in FIG. 5) in the circumferential direction. Is formed. A plurality (five in the present embodiment) of the lower grooves 17 are arranged at predetermined intervals in the radial direction. Each lower groove 17 accommodates each segment end pair 117 constituting the segment end pair group 119 in the groove by rotating the lower plate 11.

  As shown in FIGS. 6 and 7, the upper plate 31 is a conductor made of a spring steel material and has a disk shape with a thickness of several mm. The upper plate 31 has a plurality (48 in this embodiment) of upper accommodation portions (second accommodation portions) 33 corresponding to each segment end pair group 119. Each of the upper accommodating portions 33 extends in the radial direction and is arranged radially in the circumferential direction. A segment end pair group 119 is inserted into each of the upper accommodating portions 33 in a state where the distal end side of each segment coil end portion 115 protrudes from the upper plate 31 (see FIG. 9).

  And as shown in FIG. 8, the upper inner peripheral wall 35 which comprises each upper side accommodating part 33 is the other side (in FIG. 8, the counterclockwise side in FIG. 8, the side by which the lower side groove | channel 17 is formed) in the circumferential direction. Has an upper groove 37 on the opposite side. A plurality (five in the present embodiment) of the upper grooves 37 are arranged at predetermined intervals in the radial direction. Each upper groove 37 accommodates the segment end pair 117 constituting the segment end pair group 119 in the groove by rotating the upper plate 31 in the direction opposite to the lower plate 11.

  Here, when the upper plate 31 is arranged on the lower plate 11, as shown in FIG. 9, a part of the upper plate 31 enters the lower plate 11 so that the lower plate 11 and the upper plate 31 overlap each other. It has become. The reason why the lower plate 11 and the upper plate 31 can be arranged so as to overlap with each other is that the cross-sectional shape of the portion between the receiving portions of each plate is the shape shown in FIG.

  Specifically, in the lower plate 11, the cross-sectional shape of the portion between the adjacent lower accommodation portions 13 forms an L shape, and in the upper plate 31, the cross-sectional shape of the portion between the adjacent upper accommodation portions 33. This is because of the crank shape. That is, the crank-shaped portion of the upper plate 31 is fitted into the L-shaped portion of the lower plate 11. Thereby, since the clamp part in the segment coil edge part 115 can be made small, the segment coil edge part can be shortened by that much. In the present embodiment, the length of the segment coil end 115 is shortened by 12.5% compared to the conventional one. As a result, the axial dimension of the stator 100 can be shortened.

  In addition, the cross-sectional shape of the portion between the adjacent lower storage portions 13 of the lower plate 11 forms an L shape, and the cross-sectional shape of the portion of the upper plate 31 between the adjacent upper storage portions 33 forms a crank shape. Since the rib 38 extending in the stator axial direction is provided at this portion, the rigidity of the lower plate 11 and the upper plate 31 is enhanced. Thereby, when positioning the segment coil end part 115, since each plate 11 and 31 is not distorted, the segment coil end part 115 can be positioned accurately.

  Further, in the lower plate 11, a tapered guiding portion 19 for guiding the segment coil end portion 115 in the lower housing portion 13 is formed at a corner portion of the lower housing portion 13 on the arrangement surface on the stator core 101 side. ing. In the present embodiment, similarly, in the upper plate 31, tapered guiding portions 39 are formed at the corners of the upper accommodating portion 33 on the arrangement surface on the lower plate 11 side (stator core 101 side). .

  Returning to FIG. 2, the drive unit 70 includes a clamp column 21 connected to the lower plate 11 and a clamp column 41 connected to the upper plate 31. These clamp columns 21 and 41 are rotatably arranged outside the column of the housing 10A. Specifically, the clamp column 41 is rotatably disposed on the outer periphery of the column 10 </ b> A, and the clamp column 21 is rotatably disposed on the outer periphery of the clamp column 41.

  A plate-like operation portion 41A for rotating the clamp post 41 is provided on the housing 10A at the lower part of the clamp post 41 so as to extend in the horizontal direction. A plate-like operation unit 21A for rotating the clamp column 21 is provided on the operation unit 41A so as to extend in the horizontal direction below the clamp column 21. By moving these operation portions 21A and 41A in the opposite directions, that is, in the front direction and the back direction in FIG. 2, the clamp columns 21 and 41 can be rotated in the opposite directions, respectively. Yes.

  By such an operation of the drive unit 70, the segment coil end 115 is accommodated in each groove by the lower groove 17 and the upper groove 37 provided in the lower plate 11 and the upper plate 31, respectively. 117 is clamped. At this time, the amount of rotation of the lower plate 11 and the upper plate 31 (the stroke distance between the lower groove 17 and the upper groove 37) is larger than that of the conventional apparatus, as described above.

  The lower plate 11 and the upper plate 31 connected to the driving unit 70 are pressed from above by an annular plate presser 51.

  Next, a method for aligning the segment coil end 115 using the above-described alignment apparatus 10 will be described with reference to FIGS. FIG. 10 is a diagram illustrating a state where the segment end pair is accommodated in each accommodating portion. FIG. 11 is an enlarged view of the vicinity of the accommodating portion shown in FIG. FIG. 12 is a diagram illustrating a state before the segment coil end portions are accommodated in the respective accommodating portions when the positional deviation of the segment coil end portions is large. FIG. 13 is a diagram illustrating a state after the segment coil end portions are accommodated in the respective accommodating portions when the positional deviation of the segment coil end portions is large. FIG. 14 is a diagram illustrating a state where the segment end pair is positioned. FIG. 15 is an enlarged view of the vicinity of the accommodating portion shown in FIG. FIG. 16 is a diagram illustrating a cross-sectional shape of a portion between each accommodating portion of each plate in a state where the segment end pair is positioned.

  First, a stator 100 having a segment coil inserted in a state before the segment coil end 115 is positioned is prepared. That is, the slot insulating paper 107 is inserted into the slot 103 of the stator core 101, and the segment coil 111 is further inserted inside the slot 103, whereby the stator 100 with the segment coil inserted is obtained.

Next, by using the positioning device 10 described above, the segment end pair 117 in the stator 100 in which the segment coil has been inserted is positioned at a predetermined position.
First, as shown by a broken line in FIG. 2, the stator 100 having the segment coil inserted therein is set in the positioning device 10. Thereafter, as shown in FIG. 9, the lower plate 11 is disposed on the upper surface 101 </ b> A side of the stator core 101, and each segment end pair group 119 is inserted into the lower housing portion 13, so that each segment coil end 115 The tip side is protruded from the lower plate 11. Further, the upper plate 31 is disposed on the lower plate 11 (on the side opposite to the stator core 101), each segment end pair group 119 is inserted into the upper accommodating portion 33, and the distal end side of the segment coil end portion 115 is accommodated in the upper portion. Project from the portion 33.

  The upper plate 31 may be disposed after the lower plate 11 is disposed on the positioning device 10 or may be disposed on the lower plate 11 in advance to position the superimposed lower plate 11 and upper plate 31. It may be arranged in the device 10.

  By arranging the lower plate 11 and the upper plate 31 in the positioning device 10 in this way, each segment end pair group 119 becomes the lower accommodating portion 13 and the upper accommodating portion 33 as shown in FIGS. 10 and 11. Respectively. 10 and 11, for convenience, each segment end pair 117 is already arranged at a predetermined position. However, in actuality, each segment coil end 115 is slightly positioned from the predetermined position. Misaligned.

Here, even if each segment coil end portion 115 is largely displaced from a predetermined position as shown in FIG. 12, the lower plate 11 has the guide portion 19 formed. As shown in FIG. 13, the segment coil end portion 115 that is misaligned is guided into the lower housing portion 13 by the guide portion 19. In this way, when the segment coil end 115 is accommodated in the lower accommodating portion 13 and the upper accommodating portion 33, the position variation of the segment coil end 115 is absorbed to ensure that the segment coil end 115 is securely disposed in the lower accommodating portion. 13 and the upper accommodating portion 33.

  Next, the drive unit 70 is driven to rotate the lower plate 11 several times in the direction of the arrow D1 and rotate the upper plate 31 several times in the direction of the arrow D2, as shown in FIGS. Then, the lower groove 17 of the lower plate moves toward the D1 direction, and the upper groove 37 of the upper plate 31 moves toward the D2 direction.

  At that time, each segment end pair 117 is sandwiched by the lower groove 17 and the upper groove 37 from both sides, and is restrained at a predetermined position. Therefore, by simply rotating the lower plate 11 and the upper plate 31, all the segment end pairs 117 (total 240 pairs) in the stator 100 in which the segment coils have been inserted can be positioned at a time.

  And the cross-sectional shape of the part between the adjacent lower side accommodating parts 13 among the lower plates 11 makes L shape, and the cross-sectional shape of the part between the adjacent upper side accommodating parts 33 among the upper plates 31 forms a crank shape. In this portion, a rib 38 extending in the stator axial direction is provided. Therefore, the rigidity of each of the lower plate 11 and the upper plate 31 can be improved. Thereby, sufficient strength can be ensured when the segment end pair 117 is positioned, and the plates 11 and 31 are not distorted, so that the segment end pair 117 can be positioned with high accuracy.

  Further, since the lower plate 11 and the upper plate 31 have the above-described shapes, as shown in FIG. 16, the contact area between the segment coil end portion 115 and each of the plates 11 and 31 (each of the grooves 17 and 37) is conventionally set. Can be larger. Thereby, since the heat by welding can be released to each plate, it is possible to prevent the enamel coating of the segment coil 111 from being damaged by heat during welding described later.

  Thereafter, the segment coil ends 115 forming the segment end pair 117 positioned by the positioning device 10 as described above are welded together. Specifically, using a TIG welding apparatus, a welding current is passed between the head of the TIG welding apparatus and the lower plate 11 and the upper plate 31, and arc discharge occurs. By this arc discharge, the welding tip of the segment coil end 115 is melted, and then the melted portion is solidified to weld the segment coil end 115.

  Here, since the lower plate 11 and the upper plate 31 are conductors, the lower plate 11 and the upper plate 31 can be electrically connected to the segment coil end 115. Thereby, when the segment coil end 115 is welded, the ground can be taken from the contact with the segment coil end 115 as described above. Therefore, welding that requires grounding can be easily performed.

  When the welding is completed, the driving unit 70 of the positioning device 10 is driven to rotate the lower plate 11 in the D2 direction and rotate the upper plate 31 in the D1 direction. As a result, the lower groove 17 of the lower plate 11 moves in the D2 direction to move away from the segment coil end 115, and the upper groove 37 of the upper plate 31 moves in the D1 direction to move from the segment coil end 115. Leave.

Then, the upper plate 31 and the lower plate 11 are removed from the positioning device 10. At this time, since the stroke distance between the lower plate 11 and the upper plate 31 is larger than the conventional one, the interference between the weld ball and each of the plates 11 and 31 can be surely avoided.
Thereafter, the stator in which the segment coil end portions 115 forming the segment end pair 117 are welded to each other is removed from the segment positioning device 10, and an insulating film is coated on each welded portion. Thus, the stator 150 shown in FIG. 17 is manufactured.

  Since the stator 150 manufactured in this way uses the positioning device 10, the length of the segment coil end portion 115 is shortened compared to the conventional one, so the coil end height is shortened. And the axial dimension is shortened.

  As described above, according to the positioning device 10 of the present embodiment as described in detail, the cross-sectional shape of the portion between the lower housing portions 13 adjacent to each other in the lower plate 11 forms an L shape, and the upper plate 31 Of these, the cross-sectional shape of the portion between the adjacent upper accommodating portions 33 has a crank shape, and a rib 38 extending in the stator axial direction is provided at this portion. Accordingly, the rigidity of each of the lower plate 11 and the upper plate 31 is increased. Thereby, since it can prevent each plate from distorting at the time of positioning of segment coil end part 115, positioning of segment coil end part 115 can be performed with sufficient accuracy.

  Further, when aligning the segment coil ends 115, a part of the upper plate 31 can be put into the lower plate 11 and the two plates can be arranged in an overlapping manner. Accordingly, since the clamp portion at the segment coil end 115 can be reduced, the length of the segment coil end 115 can be shortened accordingly. Thereby, the axial direction dimension of the stator 150 (motor) can be shortened.

  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 segment coil end portions 115 are joined by TIG welding, but other methods may be used. For example, laser welding, electron beam welding, or the like may be used, or a joining method other than welding, such as soldering or brazing, may be employed. In such a case, each of the plates 11 and 31 may not be a conductor.

DESCRIPTION OF SYMBOLS 10 Positioning device 11 Lower plate 13 Lower accommodating part 17 Lower groove 19 Guiding part 31 Upper plate 33 Upper accommodating part 37 Upper groove 38 Rib 70 Drive part 100 Stator (before positioning)
101 Stator Core 111 Segment Coil 115 Segment Coil End 117 Segment End Pair 119 Segment End Pair 150 Stator

Claims (3)

In a segment coil positioning device that positions a pair of segment coil ends in order to weld the end portions of the segment coils protruding from the stator core among the segment coils inserted into the slots of the stator core,
A plurality of segment end portions inserted into one slot are accommodated in a state in which the tip is projected, and a first accommodating portion having a plurality of first grooves for aligning the pair of segment coil end portions is a circular shape. A first plate disposed on the end face of the stator core, wherein the cross-sectional shape of a portion between the first accommodating portions adjacent to each other is formed in an L shape,
A plurality of segment end portions inserted into one slot are accommodated in a state in which the tip is projected, and a second accommodating portion having a plurality of second grooves for aligning the pair of segment coil end portions is a circular shape. It is formed in a circumferential shape, and the cross-sectional shape of the portion between the adjacent second accommodating portions forms a crank shape, and a rib extending in the stator axial direction is provided in this portion, and a part thereof is inserted into the first plate. A second plate disposed on the first plate,
Have
Segment coil positioning, wherein the first plate and the second plate are relatively rotated, and a pair of segment coil ends are clamped and positioned by the first groove and the second groove. apparatus. In the segment coil positioning device according to claim 1,
The first plate is formed with a tapered guiding portion for guiding a segment coil end portion in the first housing portion at a corner portion of the first housing portion on the arrangement surface on the stator core side. Segment coil positioning device. In the segment coil positioning device according to claim 1 or 2,
The segment coil positioning device, wherein each of the first plate and the second plate is a conductor.

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