JP6124757B2 - Manufacturing method of stator of rotating electric machine - Google Patents

Description

This invention relates to a manufacturing method for the stator of the rotating electric machine.

  Conventionally, a stator of a rotating electrical machine has a plurality of teeth pieces arranged on the inner peripheral side of a cylindrical iron core, and a coil is formed in a slot formed in a gap between the adjacent teeth pieces in the circumferential direction. Therefore, the insertion of the coil becomes complicated, and it is difficult to arrange the coils at high density. In view of this, a technique has been proposed in which a core is formed so as not to damage the coil by inserting a band-shaped iron core into a gap between coils formed in advance in a cylindrical shape from the outer periphery of the coil (see, for example, Patent Document 1). ).

  According to Patent Document 1, the teeth are formed in a curved shape so that the radius of the arc gradually decreases from the base of the teeth to the tip of the teeth, so that the teeth can be inserted when the teeth are inserted into the gap of the coil. Trying to avoid rubbing between the tip and the coil.

JP 2008-283736 A

However, in the rotating electrical machine disclosed in Patent Document 1, even if damage to the coil can be prevented, there is a problem in that the motor performance is lowered due to the expansion of the air gap in the arc portion of the tooth tip portion facing the rotor. there were.
Also, when the iron core is configured by laminating plate-like magnetic members in a spiral shape, the stator iron core is composed of a plurality of blocks divided in the circumferential direction, so that it is plate-shaped compared to an integral iron core. There was a problem that the adhesion force between the magnetic members was weakened.

The present invention has been made to solve the above-described problems, and the tooth portion of the laminated core can be inserted into a coil group formed in advance so as not to deteriorate the performance and insulation of the rotating electrical machine. and to provide a manufacturing method of a stator that rotating electrical machine.

A method of manufacturing a stator for a rotating electrical machine according to the present invention includes:
A laminated divided core lamination process that constitutes a laminated iron core in which a plurality of magnetic core pieces each having a magnetic part composed of a yoke part having an arc shape and a teeth part protruding inwardly from the yoke part is formed;
In a method of manufacturing a stator of a rotating electrical machine, including a stator coil forming step of integrally forming a stator coil group of the rotating electrical machine,
The laminated divided core is mounted on a stator coil group, which is attached to a laminated iron core in which a plurality of magnetized iron core pieces each having an arcuate yoke portion and a teeth portion projecting inwardly from the yoke portion are laminated and wound together in advance. When the laminated tooth portion is inserted from the outer peripheral side of the stator coil group, the coil protection member for protecting the stator coil group is:
An inner peripheral surface covering portion that covers an inner peripheral surface of the laminated core that is opposed to an outer peripheral surface of a rotor that is inserted inside a stator core that is configured by arranging a plurality of the laminated cores in a ring shape;
Continuous with the inner peripheral surface covering portion, possess a side surface covering portion for covering the tip portion of at least the inner peripheral side of the circumferential direction of the side surface of the laminated teeth,
The coil protection member is formed such that a removal region including the inner peripheral surface covering portion can be separated from other remaining regions,
The inner peripheral surface covering portion and the side surface covering portion are both formed longer than the axial length of the laminated core, and when the coil protective member is attached to the laminated core, the coil protective member is Of the portions extending from both axial end surfaces of the laminated core, the cut portion for removing the removal region is provided at the end on the boundary line between the removal region and the other remaining region,
The coils protective member between the removal region of the coil protection member and the lamination teeth, has a circumferential width and the same width of the laminated teeth, an auxiliary member to assist the cutting of the removal region A coil protection member attaching step, which is inserted and attached to the laminated core,
Inserting the laminated teeth portion of the laminated core with the coil protection member into the coil gap provided at equal intervals in the stator coil group from the outer peripheral side of the stator coil group, A laminated teeth portion insertion step to be formed;
After the laminated tooth portion insertion step, a removal region separation step of peeling off and removing the removal region of the coil protection member together with the auxiliary member is provided.

According to the invention the method for manufacturing the stator of the engagement Ru rotary electric machine, the leading end of the laminated teeth of the laminated segment core by placing a resin, laminated segment core and the stator coil group, in particular with its insulation coating Direct contact can be avoided. Thereby, it can prevent that the front-end | tip of a lamination | stacking division | segmentation iron core contacts a stator coil group or its insulating film, and it has an effect which prevents the insulation fall of a stator.
Further, covering the tip of the laminated tooth portion with the resin member over the entire circumference improves the fixing force between the iron core pieces and has an effect of helping to maintain the shape of the stator iron core.

It is the side view and sectional drawing of the stator which concern on Embodiment 1 of this invention. It is sectional drawing of the rotary electric machine which inserted the rotor in the inner peripheral side of the stator of Fig.1 (a). It is a top view of a laminated iron core in the state where coil protection member 3 was attached to a lamination plan part of a lamination iron core and each lamination division iron core. It is a perspective view of the lamination | stacking division | segmentation iron core which concerns on Embodiment 1 of this invention. It is a perspective view of the stator coil group for rotary electric machines which concerns on Embodiment 1 of this invention. It is an expanded view of the coil protection member which concerns on Embodiment 1 of this invention. It is a figure which shows the method of removing the removal area | region and the coil protection member attachment process which affixes a coil protection member to the lamination | stacking division | segmentation iron core which concerns on Embodiment 1 of this invention. It is a figure which shows the expanded view of the other coil protection member which concerns on Embodiment 1 of this invention, its attachment, and a peeling state. It is the side view and sectional drawing of the stator which concern on Embodiment 2 of this invention. It is a figure which shows the expanded view of the coil protection member which concerns on Embodiment 2 of this invention, its example of installation, and a peeling state. It is the side view and sectional drawing of the stator which concern on Embodiment 3 of this invention. It is the side view and sectional drawing of the stator which concern on Embodiment 4 of this invention. It is a top view which shows the state which each attached three types of coil protection members which concern on Embodiment 4 of this invention to the lamination | stacking tooth | gear part. It is a figure which shows the order which attaches each coil protection member which concerns on Embodiment 4 of this invention to a lamination | stacking division | segmentation iron core. It is the side view and sectional drawing of the stator which concern on Embodiment 5 of this invention. It is a figure which shows the order which attaches each coil protection member which concerns on Embodiment 5 of this invention to a lamination | stacking division | segmentation iron core.

Embodiment 1 FIG.
Hereinafter, a method for manufacturing a coil protection member, a rotating electrical machine stator, and a rotating electrical machine stator according to Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1A is a side view of the stator according to Embodiment 1 of the present invention.
FIG. 1B is a cross-sectional view taken along line AA in FIG.
FIG. 2 is a cross-sectional view of the rotating electrical machine 100 in which the rotor 2 is inserted on the inner peripheral side of the stator of FIG.
The stator 1 includes a laminated iron core 10 (stator iron core) and a stator coil group 12. In the following description, the terms “circumferential direction”, “axial direction”, “radial direction”, “inner peripheral side”, “outer peripheral side”, and “axial center” refer to the “circumferential direction” of the laminated core and stator unless otherwise specified. “Axial direction” “radial direction” “inner peripheral side” “outer peripheral side” “axial center”. When the rotor 2 is inserted inside the stator 1 in FIGS. 1A and 1B, a rotating electrical machine 100 is obtained.

3A is a plan view of the laminated core 10, and FIG. 3B is a plan view of the laminated core 10 in a state where the coil protection member 3 is mounted on the laminated teeth 11 a of each laminated divided core 11. It is. FIG. 4 is a perspective view of the laminated core 11.
The laminated divided iron core 11 is formed by laminating a yoke part having an arcuate shape and a plate-like magnetic member having a tooth part protruding from the yoke part (a laminated divided iron core lamination process). Of the laminated core 11, the portion where the yoke portions of the plate-like magnetic members are laminated is the laminated yoke portion 11 b, and the portion where the teeth portions are laminated is the laminated tooth portion 11 a. Between each laminated yoke part 11b of the laminated iron core 10 is a slot 13. The shape of the laminated tooth portion 11a is preferably a tapered shape in which the width in the circumferential direction becomes narrower toward the inner tip of the iron core.

  FIG. 5 is a perspective view of the stator coil group 12 for the rotating electrical machine 100. The stator coil group 12 is formed by winding a coil to be attached to each laminated tooth portion 11a in advance and integrally forming it in an annular shape (stator coil forming step). Coil gaps 12a are formed on the side surfaces in the circumferential direction of the stator coil group 12 so as to insert the laminated tooth portions 11a of the laminated core 11 from the outer peripheral side at equal intervals.

  FIG. 6 is a development view of the resin coil protection member 3. The coil protection member 3 is a member that is attached to a predetermined range on the inner peripheral side of the laminated tooth portion 11 a of the laminated divided iron core 11. When inserting the laminated teeth 11a of each laminated core 11 into the coil gap 12a of the stator coil group 12, it is used to prevent damage to the insulating film of the wires constituting the stator coil group 12. A predetermined range on one surface of the coil protection member 3 is subjected to a process of giving adhesiveness.

The coil protection member 3 includes an inner peripheral surface covering portion that covers the inner peripheral surface of the laminated tooth portion 11a facing the rotor 2 and a side surface covering that covers the side surface of the laminated tooth portion 11a, depending on the region that is attached to the laminated laminated core 11. Divided into parts. The area inside the two vertical folds 31 closer to the center shown in FIG. 6 is the inner peripheral surface covering portion, and the area outside the folds 31 is the side surface covering portion.
The coil protection member 3 is divided into two regions as a classification of a portion that exists only at the time of manufacture of the stator and a portion that remains after the manufacture of the stator. These are two remaining areas 3a (two left and right in the figure) shown in FIG. 6 and a removal area 3b. The remaining region 3a is a portion that remains on the product while being attached to both circumferential side surfaces and both axial end surfaces of the laminated tooth portion 11a, and the removal region 3b is the entire inner circumferential surface of the laminated tooth portion 11a, the shaft during manufacture. Are attached to the inner peripheral side tip of both end surfaces in the direction and the inner peripheral side tip of both end surfaces in the circumferential direction, but finally removed before inserting the rotor. The two fold lines 31 extending left and right in the paper surface of FIG. 6 correspond to corners formed by the upper end surface and lower end surface of the laminated tooth portion 11a. Further, the two vertical folds 31 correspond to corners formed by the inner peripheral surface of the laminated tooth portion 11a and both side surfaces in the circumferential direction.

  The cut 33 is a process for facilitating the removal of the removal region 3b. A perforation 32 is provided between the notches 33 provided at the upper and lower ends. The auxiliary process for cutting is performed so that the removal region 3b can be reliably cut. Note that the auxiliary processing may be thin-wall processing for thinning the resin in that portion.

FIG. 7 is a diagram showing a coil protection member attaching step for attaching the coil protection member 3 to the laminated core 11 and a method for removing the removal region 3b.
Fig.7 (a) is a top view which shows the state which affixed the coil protection member 3 on the both sides | surfaces and inner peripheral surface of the lamination | stacking tooth | gear part 11a.
FIG. 7B is a perspective view of FIG.
FIG.7 (c) is a top view which shows the state which bent and stuck the coil protection member 3 to the upper end surface side of the lamination | stacking teeth part 11a.
FIG.7 (d) is a perspective view of FIG.7 (c).
FIG.7 (e) is a figure which shows the state which peels off the removal area | region 3b of the coil protection member 3 stuck on the front-end | tip area of the lamination | stacking teeth part 11a.

Hereinafter, the coil protection member attaching step will be described. As shown in FIGS. 7A and 7B, the fold line 31 includes corners formed by the inner peripheral surface and both side surfaces of the laminated tooth portion 11a, corners formed by the inner peripheral surface and upper and lower end surfaces, and both side surfaces. The coil protection member 3 is affixed to the periphery of the laminated tooth portion 11a so as to follow a corner portion formed by the upper and lower end surfaces. Next, as shown in FIGS. 7C and 7D, the portions of the coil protection member 3 that protrude from the laminated tooth portion 11a in the axial direction are bent on both side surfaces first and pasted to the upper and lower end surfaces. Next, it is attached to the upper and lower end surfaces from the inner peripheral surface side. At this time, a grip portion 34 in which the coil protection member 3 is folded is formed at the top end portion of the upper and lower end surfaces of the laminated tooth portion 11a.
The surface of the removal region 3b that contacts the laminated tooth portion 11a is not subjected to adhesive processing. Thereby, the holding | grip part 34 does not adhere to the lamination | stacking teeth part 11a completely.

  In this way, after the coil protection member 3 is attached to the laminated tooth portion 11 a of each laminated divided iron core 11, the laminated tooth portion 11 a is inserted into the coil gap 12 a of the stator coil group 12 from the outer peripheral side of the stator coil group 12. (Laminated teeth portion insertion step). Thereafter, the grip part 34 described above is gripped, and the removal region 3b of the coil protection member 3 is peeled off from the inside of the stator 1 (removal region separation step). An end portion in the circumferential direction of the grip portion 34 corresponds to the portion of the notch 33 of the original coil protection member 3, and the root of the grip portion 34 is connected to the perforation 32. Therefore, when the grip portion 34 is pulled, the removal region 3b is peeled off cleanly from the perforation.

  Thus, since the coil protection member 3 is provided with the folds 31 at the portions corresponding to the respective corners, the coil protection member 3 can be easily attached. Further, when the coil protection member 3 is bent and pasted to the laminated tooth portion 11a, a grip portion 34 is formed and gripped when the removal region 3b of the coil protection member 3 on the inner peripheral surface facing the rotor 2 is peeled off. Has the effect of facilitating. Further, since the coil protection member 3 is provided with the notches 33 and the perforations 32, there is an effect that the coil protection member 3 can be surely cut at a predetermined place when the removal region 3b is peeled off. Further, since the perforation 32 is provided slightly on the outer peripheral side from the tip portion of the laminated tooth portion 11a, even if burrs are generated when the removal region 3b is peeled off, the perforation 32 does not come into contact with the rotor 2. .

FIG. 8A is a development view of the coil protection member 103 made of resin. The difference between the above-described coil protection member 3 and the coil protection member 103 described below is the presence or absence of the perforation 32.
The perforation 32 is not provided in the coil protection member 103. On the other hand, a peeling member 35 (auxiliary member) shown in FIG. 8B is arranged between the coil protection member 103 and the inner peripheral surface of the laminated tooth portion 11a. The peeling member 35 is a plate material having the same width as the circumferential width of the inner peripheral surface of the laminated tooth portion 11a. Even in such a configuration, by providing the notch 33, the coil protection member 103 is peeled off so as not to remain on the inner peripheral surface facing the rotor of the laminated tooth portion 11a as shown in FIG. 8C. Is possible.

  According to the coil protection member, the stator of the rotating electrical machine, and the method for manufacturing the stator of the rotating electrical machine according to the first embodiment of the present invention, the coil protection member 3 is attached to the tip of the laminated tooth portion 11a. When the laminated tooth portion 11a is inserted in the axial direction from the outer peripheral side of the stator coil group 12 toward the coil gap 12a, the tip of the laminated tooth portion 11a does not directly contact the stator coil group 12, This has the effect of preventing damage to the stator coil group 12, particularly damage to the insulating film. Further, since the tip of the laminated tooth portion 11a is covered with the coil protection member 3 over the entire circumference, the iron core pieces constituting each laminated material can be mutually restrained in the laminating direction, and the individual iron core pieces are peeled off from the laminated iron core by an external force. There is an effect to prevent. Furthermore, by finally peeling off the removal region 3b of the coil protection member 3, the coil protection member disappears on the inner peripheral surface of the laminated tooth portion 11a facing the rotor, and an air gap can be appropriately secured.

Embodiment 2. FIG.
Hereinafter, the coil protection member, the stator of the rotating electrical machine, and the method of manufacturing the stator of the rotating electrical machine according to the second embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the first embodiment.
FIG. 9A is a side view of the stator 201 according to Embodiment 2 of the present invention.
FIG.9 (b) is sectional drawing in the BB line of Fig.9 (a).
When a rotor is inserted inside the stator 201 in FIGS. 9A and 9B, a rotating electrical machine is obtained.

  The resin coil protection member 203 according to the present embodiment is different in size from the coil protection member 3 according to the first embodiment. The coil protection member 203 is disposed only at the very tip of the laminated tooth portion 11a. Further, the coil protection member 203 is all peeled off after the laminated tooth portion 11a is inserted into the coil gap 12a.

FIG. 10A is a development view of the coil protection member 203 made of resin.
Fig.10 (a) is a top view which shows the state which affixed the coil protection member 203 on the both sides | surfaces and inner peripheral surface of a lamination | stacking tooth | gear part.
FIG.10 (c) is a figure which shows the state which peels off the whole coil protection member 203 stuck on the front-end | tip area of the lamination | stacking tooth | gear part 11a.
As shown in FIG. 10A, the coil protection member 203 does not include the incision or peeling member described in the first embodiment, and is completely peeled off after the laminated tooth portion 11a is inserted into the coil gap 12a.

  According to such a configuration, the coil protection member 203 can be manufactured with the minimum necessary material. Further, since the cushioning material is provided between the corner portion at the tip of the laminated tooth portion 11a and the stator coil group 12 when the laminated tooth portion 11a is inserted, damage to the film of the stator coil group 12 can be prevented. In addition, the coil protection member 203 is bonded to the portions protruding in the axial direction from both end surfaces of the laminated tooth portion 11a, so that the gripping at the time of peeling becomes easy and the peeling work becomes easy. It is done.

Embodiment 3 FIG.
Hereinafter, the coil protection member, the stator of the rotating electrical machine, and the method for manufacturing the stator of the rotating electrical machine according to the third embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the first and second embodiments.
FIG. 11A is a side view of the stator 301 according to Embodiment 3 of the present invention.
FIG.11 (b) is sectional drawing in CC line of Fig.11 (a).
When a rotor is inserted inside the stator 301 shown in FIGS. 11A and 11B, a rotating electric machine is obtained.
The coil protection member 303 according to the present embodiment covers the entire laminated tooth portion 11a, whereas the coil protecting members 3 and 203 of the first and second embodiments cover a part of the laminated tooth portion 11a. Is different.

  According to such a configuration, since the corners of the laminated tooth portion 11a that contacts the stator coil group 12 when the laminated tooth portion 11a is inserted are all covered with the coil protection member 303, the corner portion at the tip of the laminated tooth portion 11a and Direct contact between all the corners on the side surface in the circumferential direction and the stator coil group 12 can be avoided, and damage to the stator coil group 12, particularly the insulating film, can be prevented.

Embodiment 4 FIG.
Hereinafter, a manufacturing method of the coil protection member, the stator of the rotating electrical machine, and the stator of the rotating electrical machine according to the fourth embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the third embodiment.
FIG. 12A is a side view of the stator 401 according to Embodiment 1 of the present invention.
FIG.12 (b) is sectional drawing in the DD line | wire of Fig.11 (a).
When a rotor is inserted inside the stator 401 shown in FIGS. 12A and 12B, a rotating electrical machine is obtained.
In the coil protection member 403 according to the present embodiment, the coil protection member 303 of the third embodiment covers the entire laminated tooth portion 11a. The difference is that it covers the corners.

  FIG. 13 is a plan view showing a state in which the three types of coil protection members 403a, 403b, and 403c used in the present embodiment are respectively attached to the laminated tooth portion 11a. As shown in FIG. 13, the coil protection member 403a (both ends wide), the coil protection member 403b (one end wide one end narrow), and the coil protection member 403c (both ends narrow) are not only laminated tip 11a tips but also laminated yokes. It arrange | positions so that this part may be protected along the inner peripheral side corner | angular part of the part 11b.

  In the present embodiment, the coil protection member 403a (wide at both ends), the coil protection member 403b (wide at one end and narrow at one end), and the coil protection member 403c (narrow at both ends) are combined to form each laminated tooth portion 11a and laminated yoke portion 11b. These are arranged at the inner peripheral side corners. The coil protection member 403a (wide at both ends) is composed of two wide portions 403aw on both sides and a basic tooth portion 403a1. The coil protection member 403b (wide at one end and narrow at one end) includes a narrow portion 403an, a wide portion 403aw, and a basic tooth portion 403a1. Further, the coil protection member 403c (both ends are narrow) includes two narrow portions 403an and a basic tooth portion 403a1.

FIG. 14 is a diagram illustrating an order in which the coil protection members 403a to 403c are attached to the laminated core.
When arranging the coil protection member 403a (wide at both ends), the coil protection member 403b (wide at one end, narrow at one end), and the coil protection member 403c (below at both ends), the narrow portion is arranged so as to overlap the outer peripheral side of the wide portion. . Specifically, as shown in FIG. 14, the coil protection member 403a (wide at both ends) is disposed at the corners of the laminated tooth portion 11a and the laminated yoke portion 11b, and the laminated tooth portion 11a is inserted into the coil gap 12a. Next, adjacent to the coil gap 12a into which the laminated tooth portion 11a of the laminated core 11 in which the coil protection member 403b (wide at one end and narrow at one end) is arranged at the corners of the laminated tooth portion 11a and the laminated yoke portion 11b is inserted first. Insert into the coil gap 12a. Similarly, the laminated tooth portions 11a in which the coil protection members 403b (one end wide and one end narrow) are sequentially inserted into the adjacent coil gaps 12a. In the final coil gap 12a, the laminated tooth portion 11a of the laminated divided iron core 11 in which the coil protection member 403c (narrow width at both ends) is disposed at the corners of the laminated tooth portion 11a and the laminated yoke portion 11b is inserted. It should be noted that the narrow portions 403bn or 403cn of the adjacent coil protection member overlap below the wide portions 403aw on both end faces of the laminated yoke portion 11b.

  According to such a configuration, the corner portions on the inner peripheral side of the laminated tooth portion 11a and the laminated yoke portion 11b, that is, the place where the laminated divided iron core 11 and the stator coil group 12 are in contact are all made of resin-made coil protection members 403a to 403c. Covered with. Therefore, not only can the stator coil group 12 be prevented from being damaged by the corner of the tip of the laminated tooth portion 11a, but also an insulation distance between the stator coil group 12 and the laminated core 11 can be secured, and it also has a function as an insulating member. It becomes possible to make it.

Embodiment 5. FIG.
Hereinafter, the coil protection member, the stator of the rotating electrical machine, and the method for manufacturing the stator of the rotating electrical machine according to the fifth embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the fourth embodiment.
FIG. 15A is a side view of the stator 501 according to Embodiment 1 of the present invention.
FIG.15 (b) is sectional drawing in the EE line | wire of Fig.15 (a).
When a rotor is inserted inside the stator 501 shown in FIGS. 15A and 15B, a rotating electrical machine is obtained.
In Embodiment 4, three types of coil protection members, coil protection members 403a to 403c, were used. However, in this embodiment, the coil protection member 403a (wide at both ends) and the coil protection member 403c (both ends at narrow) Alternating types of coil protection members are arranged.

  FIG. 16 is a diagram showing the order in which the coil protection members 403a and 403c are attached to the laminated core. When the coil protection member 403a (wide at both ends) and the coil protection member 403c (narrow at both ends) are disposed, the narrow portions are disposed so as to overlap the outer peripheral side of the wide portion. Specifically, as shown in FIG. 16, coil protection members 403a (wide at both ends) are arranged at the corners of the laminated tooth portion 11a and the laminated yoke portion 11b, and every other laminated tooth portion 11a is inserted into the coil gap 12a. To do. Next, the laminated tooth portion 11a of the laminated core 11 having the coil protection member 403c (narrow width at both ends) arranged at the corners of the laminated tooth portion 11a and the laminated yoke portion 11b is sequentially inserted into the vacant coil gap 12a.

  In addition, on both end faces of the laminated yoke portion 11b, the narrow portion 403cn of the adjacent coil protection member overlaps under the wide portion 403aw. As can be seen from a comparison between FIG. 12 and FIG. 15, the types of coil protection members to be used are different between the fourth embodiment and the fourth embodiment, and how the coil protection members overlap in the laminated yoke portion 11 b is as follows. The narrow portion 403an of the adjacent coil protection member 403c always overlaps under the wide portion 403aw, but the appearance after mounting is the same. According to such a configuration, the same effect as in the fourth embodiment can be obtained.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

1, 201, 301, 401, 501 Stator, 2 rotor,
3, 103, 203, 303, 403, 403a, 403b, 403c coil protection member,
403a1 Basic teeth part, 403aw wide part,
403an, 403bn, 403cn narrow portion, 3a remaining region, 3b removed region,
10 laminated iron cores, 11 laminated divided iron cores, 11a laminated teeth part,
11b Laminated yoke portion, 12 stator coil group, 12a coil gap, 13 slots, 31 folds, 32 perforations, 33 cuts, 34 gripping portion, 35 peeling member, 100 rotating electric machine.

Claims (1)

A laminated divided core lamination process that constitutes a laminated iron core in which a plurality of magnetic core pieces each having a magnetic part composed of a yoke part having an arc shape and a teeth part protruding inwardly from the yoke part is formed;
In a method of manufacturing a stator of a rotating electrical machine, including a stator coil forming step of integrally forming a stator coil group of the rotating electrical machine,
The laminated divided core is mounted on a stator coil group, which is attached to a laminated iron core in which a plurality of magnetized iron core pieces each having an arcuate yoke portion and a teeth portion projecting inwardly from the yoke portion are laminated and wound together in advance. When the laminated tooth portion is inserted from the outer peripheral side of the stator coil group, the coil protection member for protecting the stator coil group is:
An inner peripheral surface covering portion that covers an inner peripheral surface of the laminated core that is opposed to an outer peripheral surface of a rotor that is inserted inside a stator core that is configured by arranging a plurality of the laminated cores in a ring shape;
Continuous with the inner peripheral surface covering portion, possess a side surface covering portion for covering the tip portion of at least the inner peripheral side of the circumferential direction of the side surface of the laminated teeth,
The coil protection member is formed such that a removal region including the inner peripheral surface covering portion can be separated from other remaining regions,
The inner peripheral surface covering portion and the side surface covering portion are both formed longer than the axial length of the laminated core, and when the coil protective member is attached to the laminated core, the coil protective member is Of the portions extending from both axial end surfaces of the laminated core, the cut portion for removing the removal region is provided at the end on the boundary line between the removal region and the other remaining region,
The coils protective member between the removal region of the coil protection member and the lamination teeth, has a circumferential width and the same width of the laminated teeth, an auxiliary member to assist the cutting of the removal region A coil protection member attaching step, which is inserted and attached to the laminated core,
Inserting the laminated teeth portion of the laminated core with the coil protection member into the coil gap provided at equal intervals in the stator coil group from the outer peripheral side of the stator coil group, A laminated teeth portion insertion step to be formed;
The manufacturing method of the stator of a rotary electric machine provided with the removal area separation process of peeling off and removing the removal area of the coil protection member with the auxiliary member after the lamination teeth part insertion process.

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