JP2002095226A - Manufacturing method of dynamoelectric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a dynamoelectric machine which can reduce the number of manufacturing processes and a manufacturing cost. SOLUTION: A coil wire 42 formed continuously into a U-shaped zigzag shape is folded into a coil shape to form a winding subassembly 30. The winding subassemblies 30 formed beforehand are attached to teeth of a stator to form windings 17. The coil wire 42 is formed from a winding wire material plate by punching. The coil wire 42 has a 1st U-shaped part 42a formed on one end of the coil wire 42, and a plurality of other 2nd U-shaped parts 42b formed continuously from a part adjacent to the 1st U-shaped part 42a to the other end of the coil wire 42. The coil wire 42 is folded successively from the 1st U-shaped part 42a to the other end of the coil wire 42 so as to put the respective U-shaped parts 42a and 42b upon each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a rotary electric motor in which a rectangular winding is wound around teeth provided on one of a stator and a rotor.

[0002]

2. Description of the Related Art Generally, a rotary motor having a structure in which a rectangular copper wire is wound in a coil shape around teeth of a stator core is disclosed. In addition, the present applicant has proposed a rotary electric motor in which a winding subassembly obtained by winding a rectangular copper wire in a coil shape in advance is mounted on teeth of a stator core in an earlier application. In this case, a coil as a winding sub-assembly is manufactured by winding a rectangular copper wire in a coil shape using a coil spring forming machine or the like.

[0003]

By the way, the production of the winding sub-assembly by the coil spring forming machine requires an expensive coil spring forming machine, and the man-hour required for manufacturing the coil is increased. This is a problem in reducing the amount of light.

[0004] In addition, the conventional method as described above requires an operation of winding a rectangular copper wire in a coil shape. The bent portion of the coil made of a rectangular copper wire is more difficult to bend as the bending radius is smaller, and stress is easily applied to the bent portion. Therefore, the bending radius has a limit.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a method of manufacturing a rotary electric motor capable of reducing the number of manufacturing steps and manufacturing costs.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a rotary electric motor in which a rectangular winding is wound around teeth provided on one of a stator and a rotor. In the manufacturing method, the rectangular winding forms a winding wire sub-assembly by punching and shaping a plate material of a winding material to form a continuous coil wire, and folding the coil wire into a coil shape. The gist is that the winding sub-assembly is attached to the teeth.

According to a second aspect of the present invention, there is provided a method for manufacturing a rotary electric motor in which a rectangular winding is wound around teeth provided on one of a stator and a rotor, wherein the rectangular winding is formed into a U-shaped zigzag. The gist is to form a winding sub-assembly by folding a continuously formed coil wire into a coil shape, and attach the winding sub-assembly to a tooth.

According to a third aspect of the present invention, in the method of the second aspect, the coil wire is:
The gist of the present invention is that the sheet material of the winding material is formed by punching.

The invention according to claim 4 is the invention according to claim 2 or 3.
Wherein the coil wire has a plurality of U-shaped portions, and is sequentially folded from one end of the coil wire to the other end of the coil wire so that the U-shaped portions overlap each other. The gist is that they have done so.

According to a fifth aspect of the present invention, in the method for manufacturing a rotary electric motor according to the fourth aspect, the coil wire is:
A first U-shaped portion formed at one end of the coil wire and the first U-shaped portion;
And a plurality of other second U-shaped portions continuously formed to the other end of the coil wire rod adjacent to the U-shaped portion, between the first U-shaped portion and the second U-shaped portion, and A bending deviation correcting portion is provided between the second U-shaped portions, and the first U-shaped portion is arranged such that the U-shaped portions overlap each other with the center line of the bending deviation correcting portion as a folding line. The point is that the coil wire is sequentially folded toward the other end of the coil wire.

According to a sixth aspect of the present invention, there is provided a method for manufacturing a rotary electric motor in which a rectangular winding is wound around a tooth provided on one of a stator and a rotor, wherein the rectangular winding is a plate material of a winding material. Are formed in a staggered comb-tooth shape to form a continuous coil wire, and each adjacent comb-tooth-shaped side of the coil wire is formed so as to undulate and stagger in a staggered shape, and each adjacent protrusion is provided. The winding wire sub-assembly is created by compressing and folding the coil wire so that the adjacent side and each adjacent recessed side are respectively substantially continuous, and mounting the winding sub-assembly on a tooth. The gist is to become

(Operation) According to the first aspect of the present invention,
The rectangular winding is obtained by mounting a winding subassembly prepared in advance on a tooth. Therefore, obstruction between adjacent teeth can be avoided at the time of winding the winding, so that the rectangular winding can be easily wound (attached) to each tooth.

In addition, since the coil wire is formed by stamping and forming a plate material of a winding material, the coil wire and the winding sub-assembly can be easily manufactured. further,
The winding sub-assembly can be easily formed by folding a coil wire continuous in a zigzag into a coil shape.
As a result, it is possible to reduce the number of manufacturing steps and manufacturing cost of the rotary motor.

According to the second aspect of the present invention, the rectangular winding is formed by mounting a winding subassembly prepared in advance on a tooth. Therefore, obstruction between adjacent teeth can be avoided at the time of winding the winding, so that the rectangular winding can be easily wound (attached) to each tooth.

Further, since the winding sub-assembly can be easily formed by folding a coil wire rod that is continuous in a U-shaped zigzag into a coil shape, it is possible to reduce the number of manufacturing steps and manufacturing costs of the rotary motor. further,
Since the rectangular winding is formed in the winding sub-assembly without bending, the bending radius of the bending portion in the coil-shaped winding sub-assembly can be reduced.

According to the invention of claim 3, according to claim 2,
In addition to the effects of the invention described in (1), the coil wire is formed by punching a sheet material of a winding material. Therefore, the coil wire and thus the winding sub-assembly can be made more easily. As a result, the number of manufacturing steps and manufacturing cost of the rotary electric motor can be further reduced.

According to the invention described in claim 4, according to claim 2,
In addition to the operation of the invention described in the above items 3 and 3, each U
The winding sub-assembly is created by folding the character portions sequentially from one end of the coil wire to the other end of the coil wire so as to overlap each other. Therefore, the operation of folding each U-shaped portion of the coil wire can be performed easily and accurately.

According to the invention set forth in claim 5, according to claim 4,
In addition to the operation of the invention described in the above, the first U-shaped portion and the second U-shaped portion
Between the U-shaped portions and between the second U-shaped portions, a bending deviation correcting portion is provided, and each U-shaped portion is folded using the center line of the bending deviation correcting portion as a folding line.

Therefore, the coil wire can be easily folded so that the respective U-shaped portions are overlapped only by bending the bending deviation correcting portion. As a result, the winding subassembly can be made more easily.

According to the sixth aspect of the present invention, the rectangular winding is formed by mounting a winding subassembly prepared in advance on a tooth. Therefore, obstruction between adjacent teeth can be avoided at the time of winding the winding, so that the rectangular winding can be easily wound (attached) to each tooth.

Further, since the coil wire is formed by cutting a sheet material of the winding material into a staggered comb shape, the coil wire and the winding sub-assembly can be easily manufactured. Further, the winding sub-assembly is formed so that each adjacent comb-shaped side of the coil wire continuously formed in a zigzag shape is undulating and staggered, and each adjacent protruding side and each adjacent side are formed. The coil wire can be easily formed by compressing and folding the coil wire so that the concave sides are substantially continuous. As a result, it is possible to reduce the number of manufacturing steps and manufacturing cost of the rotary motor.

Further, since the coil wire is formed by cutting a sheet material of the winding material into a staggered comb shape, the sheet material is consumed as a continuous region having substantially no void. Therefore, the yield of the material for forming the coil wire (rectangular winding) can be improved, and the manufacturing cost can be further reduced.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) Hereinafter, a first embodiment of the present invention applied to a rotating magnetic field type motor as a rotating motor will be described.
An embodiment will be described with reference to FIGS.

FIG. 1 shows a rotating magnetic field type electric motor 1 according to this embodiment.
0 shows a schematic configuration. As shown in FIG. 1, the rotating magnetic field type electric motor 10 is a three-phase nine-slot motor, and includes a stator 11 and a rotor 12.

The stator 11 has an outer core 13 and an inner core 14, as shown in FIGS. The outer core 13 is formed in an annular shape, and is provided with a plurality of wedge-shaped recesses 15a on an inner peripheral surface 15 thereof. In the present embodiment, nine wedge-shaped recesses 15a are provided.

The inner core 14 has n teeth 16 extending in the radial direction and arranged in the rotational direction. In the present embodiment, nine teeth 16 are provided in the same number as the wedge-shaped concave portions 15a. A wedge-shaped convex portion 16a for fitting with the concave portion 15a is provided at a tip portion (outer end portion) of each tooth 16. The base ends (inner ends) of the teeth 16 are connected to each other, and the connection forms an annular portion 16b. The portion between the base end and the distal end of the tooth 16 is referred to as the winding part 16 of the tooth 16.
c.

The winding part 16 of each tooth 16
Each of the windings 17 is wound with a winding 17 as a rectangular winding by a winding method described later. In this embodiment, each tooth 1
The winding 17 wound around 6 is made of a rectangular copper wire having a rectangular cross section having a long side surface and a short side surface.

On the other hand, as shown in FIG. 1, the rotor 12 of the electric motor 10 comprises a rotating shaft 18, a base 19 and a permanent magnet 20, and is rotatably supported inside the annular portion 16b of the stator 11. .

Hereinafter, a method of winding the winding 17 around each tooth 16 will be described. In this embodiment, the windings 17 are formed in advance in the winding sub-assemblies 30 as shown in FIG. 2 corresponding to the respective teeth 16, and the winding sub-assemblies 30 are mounted on the respective teeth 16. I have.

More specifically, first, using a plate material 41 made of a winding material (for example, copper or copper alloy) as shown in FIG. 3, a coil wire material continuously formed in a U-shaped zigzag as shown in FIG. 42 is punched out by press working. In this embodiment, as shown in FIGS. 3 and 4, a coil wire 42 having a rectangular cross section and having a line width C smaller than the plate thickness D is formed by using a plate material 41 having a plate thickness D. As shown in FIG. 3, the coil wire 42 is connected to one end thereof (for example, FIGS. 3 and 4).
The width A between the inner surfaces of the first U-shaped portion 42a at the left end (indicated by) is smaller than the width B between the inner surfaces of the other second U-shaped portions 42b. Moreover, the first U-shaped part 4
The width A between the inner surfaces of 2a is equal to the difference between the width B between the inner surfaces of each second U-shaped portion 42b and the line width C of the coil wire 42. That is, A = BC. further,
The width A between the inner surfaces of the first U-shaped portion 42a is set slightly larger than the width T of each tooth 16 shown in FIGS.

Next, the coil wire 42 is folded into a coil shape as shown in FIG. 5 to form the winding sub-assembly 30. More specifically, first, as shown in FIG. 5A, the first U-shaped portion 42a is
The second U adjacent to the fold line K1 shown in FIG.
An arrow P shown in FIG. 5A so as to overlap the character portion 42b.
Fold along one direction. Subsequently, the overlapping first U-shaped portion 42a and the second U-shaped portion 42b adjacent to the first U-shaped portion 42a are connected to a second U-shaped portion 42b adjacent to the folding line K2 as a center line. Fig. 5 (b) so as to overlap from below
In the direction of arrow P2 shown in FIG. Then, the adjacent second lines with the folding lines K3 to K6 as center lines in this way.
When the coil wire 42 is folded up and down (in a zigzag shape) so as to overlap the U-shaped portion 42b, the coil-shaped winding sub-assembly 30 shown in FIG. 5C is created. At this time, the width between the coil inner surfaces of the coil-shaped winding subassembly 30 is BC (= A).

According to the rotating field motor 10 of the present embodiment, the following features can be obtained. (1) In the present embodiment, the winding 17 is formed by mounting a winding subassembly prepared in advance on the teeth 16. Therefore, it is possible to avoid obstruction between the adjacent teeth 16 at the time of winding the winding.
6 can be easily wound (mounted).

Further, since the winding sub-assembly 30 can be easily formed by folding the coil wire 42 continuous in a U-shaped zigzag into a coil shape, the number of manufacturing steps and manufacturing cost of the rotating magnetic field type motor 10 can be reduced. Can be.

(2) In this embodiment, the coil wire 42
Was formed by punching a plate material 41 of a material for winding.
Therefore, the coil wire 42 and the winding sub-assembly 30 can be made more easily. As a result, the number of manufacturing steps and manufacturing cost of the rotating magnetic field type electric motor 10 can be further reduced.

The U-shaped portions 42a, 42a,
Since the curved portion at 42b is formed by direct punching without being curved, the curved portion at each of the U-shaped portions 42a and 42b, that is, the coil-shaped winding subassembly 3
The radius of curvature of the zero curved portion can be made smaller than in the prior art.

(3) In this embodiment, the coil wire 42
A first U-shaped portion 42a formed at one end of the coil wire 42 and a coil wire 4 adjacent to the first U-shaped portion 42a.
Other plural (three) continuously formed up to the other end of 2
Of the second U-shaped portion 42b. In addition, the first U-shaped portion 42a, the second U-shaped portion 42b, and the second U-shaped portion 42
b are folded in order from the first U-shaped portion 42a toward the other end of the coil wire 42 so as to overlap each other.

Therefore, each U-shaped portion 42 of the coil wire 42
The operations of folding the a and b can be performed easily and accurately, and the winding sub-assembly 30 can be easily formed.

(4) In the present embodiment, the first U-shaped portion 42
The width A between the inner surfaces of a is equal to the difference between the width B between the inner surfaces of each second U-shaped portion 42b and the line width C of the coil wire 42. That is, A = BC.

Therefore, by successively folding the first U-shaped portion 42a toward the other end of the coil wire 42, the width A between the inner surfaces of the first U-shaped portion 42a is equal to the width B between the inner surfaces. -C (= A) Winding Subassembly 30
Can be easily created.

(Second Embodiment) Hereinafter, a second embodiment in which the present invention is embodied in a rotating magnetic field type electric motor will be described with reference to FIGS. In the second embodiment, since the method of creating the winding subassembly to be mounted on each tooth 16 as the winding 17 of the first embodiment is changed,
The detailed description of the same parts is omitted.

First, using a substantially rectangular plate 61 made of a winding material (for example, copper or a copper alloy) as shown in FIG. 6, a coil wire 62 continuous in a staggered zigzag pattern shown in FIG. 7 is formed. Punched by pressing. In the present embodiment, the coil wire 62 is formed using substantially the entire surface of the plate 61, and the end surfaces 61 a and 6 of the plate 61 are formed.
1b forms an end face of the coil wire 62.

As shown in FIG. 7, the coil wire 62 has a plurality of (eight) sides 62a, 62b, 62c, 62d, 62 substantially equally divided in the width direction according to the required number of turns.
e, 62f, 62g, and 62h are formed alternately. More specifically, between sides 62a and 62b, sides 62c and 62
d, between the sides 62e and 62f, and between the sides 62g and 62h, respectively, the connecting portions 6 arranged on one side thereof (lower left side in FIG. 7).
3, 64, 65, and 66, and the other side (the upper right side in FIG. 7) is separated. Also, the side 62b,
62c, between sides 62d and 62e, and between sides 62f and 62g are connected by connecting portions 67, 68 and 69 arranged on the other side (upper right side in FIG. 7), respectively, and are on the same side (lower left side in FIG. 7). ) Are separated.

The connection portions 63 and 64, the connection portions 64 and
Notched portions 71, 72, 73 cut out in the longitudinal direction are formed between the connecting portions 65, 65, and between the connecting portions 65, 66, respectively, between the sides 62b, 62c, between the sides 62d, 62e, and between the sides 62f, 62f. The cutouts 71, 62g respectively,
72 and 73 are separated. In addition, connection section 6
Notches 74 and 75 formed in the longitudinal direction are formed between 7, 68 and between the connecting portions 68 and 69, respectively, and are cut between the sides 62c and 62d and between the sides 62e and 62f, respectively. It is separated at the notches 74 and 75.

Next, each adjacent side 62 of the coil wire 62
a to 62h are formed by press working so as to undulate in an uneven shape. More specifically, the sides 62a, 62
c, 62e, and 62g are bent on one side (lower left side of FIG. 7) along a mountain fold line shown by a broken line and a valley fold line shown by a dashed line. In addition, side 62
b, 62d, 62f, and 62h are bent along the mountain fold line and the valley fold line which are alternated with the mountain fold line and the valley fold line, respectively. Further, the sides 62c, 62e, and 62g are bent along the mountain fold line indicated by a broken line and the valley fold line indicated by a dashed line on the other side (upper right side in FIG. 7), and the sides 62b, 62d. , 62f are respectively bent along the mountain fold line and the valley fold line which are alternated with the mountain fold line and the valley fold line. As a result, as shown in FIG. 8, the sides 62a, 62c, 62e, and 62g are projected, and the sides 62b, 62d, 62f, 62
h is recessed.

At the same time, between the sides 62a and 62b, between the sides 62c and 62d, between the sides 62e and 62f, and between the sides 62g and 62g,
The connection portions 63 to 66 are bent in a substantially Z shape along the mountain fold lines and the valley fold lines set in the connection portions 63 to 66 with 62h interposed therebetween (see FIG. 8). In addition, the side 62
b and 62c, between sides 62d and 62e, and sides 62f and 62
The connection portions 67 to 69 are bent in a substantially inverted Z-shape along the mountain fold lines and valley fold lines that are alternated with the above-mentioned mountain fold lines and valley fold lines set in the connection portions 67 to 69 with the space between g therebetween. (See FIG. 8). Thus, the sides 62a, 62
c, 62e, 62g and sides 62b, 62d, 62f, 62
h is such that the opposing surfaces are separated from each other by the step difference.

Next, the coil wire 62 bent in the above-described manner is compressed in a direction substantially perpendicular to the longitudinal direction by press working. That is, the connection portions 63 to 66 are bent in a substantially Z-shape, and the space between the connection portions 63 and 64 and the connection portion 6 are formed.
Notch portions 71 and 72 are formed between 4 and 65, respectively. Further, the connection portions 67 to 69 are bent in a substantially inverted Z-shape, and are provided between the connection portions 67 and 68 and the connection portions 68 and 69.
Notches 74 and 75 are formed between them. Therefore, as shown in FIG. 9, each of the adjacent protruding sides 62a,
62c, 62e, 62g and each adjacent concave side 6
The coil wire 62 is compressed such that 2b, 62d, 62f, and 62h are substantially continuous. The winding sub-assembly 80 is created by folding the coil wire 62 into a coil shape in the above manner. This winding sub-assembly 8
As in the first embodiment, the winding 17 is formed by attaching 0 to each tooth 16.

The width A1 between the opposing surfaces of the protruding sides 62a, 62c, 62e, 62g and the recessed sides 62b, 62d, 62f, 62h of the winding sub-assembly 80.
9 (see FIG. 9) is set slightly larger than the width T of each tooth 16 shown in FIGS.

As described in detail above, according to the present embodiment, the following effects can be obtained. (1) In the present embodiment, the winding 17 is formed by mounting a winding subassembly prepared in advance on the teeth 16. Therefore, it is possible to avoid obstruction between the adjacent teeth 16 at the time of winding the winding.
6 can be easily wound (mounted).

Further, the winding sub-assembly 80 is formed on the adjacent comb-tooth-shaped side 6
2a to 62h are formed so as to undulate in an uneven shape. In addition, each adjacent protruding side 62a, 62
c, 62e, 62g and each adjacent recessed side 62
The coil wire 62 can be easily formed by compressing and folding it into a coil shape so that b, 62d, 62f, and 62h are substantially continuous. As a result, the number of manufacturing steps and manufacturing cost of the rotating magnetic field type electric motor 10 can be reduced.

(2) In the present embodiment, the coil wire 62
Was formed by cutting a plate material 61 of a winding material into a staggered comb shape. Therefore, the coil wire 62 and the winding sub-assembly 80 can be easily manufactured. As a result, the number of manufacturing steps and manufacturing cost of the rotating magnetic field type electric motor 10 can be further reduced.

(3) In this embodiment, the coil wire 62
Is formed by cutting the sheet material 61 of the winding material into a staggered comb shape, so that the sheet material 61 can be consumed as a continuous region having almost no void. Therefore, the yield of the material for forming the coil wire 62 (winding 17) can be improved, and the manufacturing cost can be further reduced.

This embodiment may be modified as follows. The arc portions of the U-shaped portions 42a and 42b in the first embodiment may be formed in a straight line as shown in FIG. In this case, the features (1) to (4) of the first embodiment described above.
The same effects as those described in (1) can be obtained.

As shown in FIG. 11, the bending deviation correcting section 42c may be provided between the U-shaped sections 42a and 42b in the first embodiment. That is, the first U-shaped portion 42a, the second U-shaped portion 42b, and the second U-shaped portion 42b are connected to each other via the bending displacement correcting portion 42c without being directly connected to each other. Then, the center line of each bending deviation correcting portion 42c is set as a folding line K1 to K6 so that the U-shaped portions 42a and 42b overlap each other.
Is folded to form the winding subassembly 30. In this case, features (1) to (1) of the first embodiment.
In addition to the effect described in (4), the coil wire 42 can be easily folded by bending the bending deviation correcting portion 42c. As a result, the winding sub-assembly 30 can be made more easily.

Further, the winding 17 in the first embodiment is replaced with the winding sub-assembly 5 shown in FIG.
0 may be created and implemented. In detail, FIG.
As shown in (a), a line width C using a plate material 41 having a thickness D is used.
Is formed by punching a coil wire 52 having a rectangular cross section and having a rectangular cross section. The coil wire 52 is formed such that each U-shaped portion 52a has the same width A between the inner surfaces. Then, by twisting the straight common connecting portion 52b between the U-shaped portions 52a in order from one end to the other end of the coil wire 52 so that the straight common connecting portion 52b itself becomes a torsion center axis, the coil wire 52 is twisted. Is folded and winding sub-assembly 50
Is created. In this case, in addition to the effects described in the features (1) to (3) of the first embodiment, each U-shaped portion 52a
Since the width between the inner surfaces is the same, the coil wire 52
Can be folded from any one end, that is, there is no directionality when folding the coil wire 52. As a result, it is possible to increase the manufacturing efficiency of the winding sub-assembly 50 and simplify the manufacturing management.

In the first embodiment, the plate material 4 having a thickness D
Although the coil wire 42 having a rectangular cross section having a line width C smaller than the plate thickness D is formed by using No. 1, the plate thickness D may be smaller than the line width C. In this case, substantially the same effects as the effects (1) to (4) of the first embodiment can be obtained.

In the first embodiment, each tooth 16
The windings 17 wound on each of the teeth were made of a rectangular copper wire having a rectangular cross section having a long side surface and a short side surface.
The winding 17 wound around 6 may be formed of a rectangular copper wire having a square cross section. That is, the plate thickness D and the line width C may be equal. In this case, substantially the same effects as the effects (1) to (4) of the first embodiment can be obtained.

In the first embodiment, the coil wire 42
Was carried out by forming a plate material 41 of a material for winding by punching, but the coil wire 42 may be formed and carried out by another processing method. In this case, the same effects as the effects (1), (3), and (4) of the first embodiment can be obtained.

In the second embodiment, the coil wire 62 is formed using substantially the entire surface of the plate 61, and the end surfaces 61 a and 61 b of the plate 61 form the end of the coil wire 62. did. On the other hand, a plate material wider than the coil wire 62 may be used. Also in this case, since the plate material is consumed as a continuous region having substantially no void, the same effects as the effects (1) and (2) of the second embodiment can be obtained.

The sides 62a to 62 in the second embodiment.
The number of 2h (eight) is an example, and may be changed to another number according to the required number of turns of the coil. In the second embodiment, the shape of the winding 17 wound around each of the teeth 16 was not mentioned, but a rectangular copper wire having a rectangular cross section having a long side surface and a short side surface or a rectangular copper wire having a square cross section was used. It may be implemented by a line.

The rotating magnetic field type electric motor 10 in each of the above-described embodiments may be embodied with a motor other than nine teeth 16. In this case, the same effects as those of the above embodiments can be obtained.

In each of the above embodiments, the teeth 16 around which the windings 17 are wound are provided on the stator 11, but may be provided on the rotor 12. In this case, the same effects as those of the above embodiments can be obtained.

The arrangement relationship between the stator 11 and the rotor 12 in each of the above embodiments is merely an example. For example, the rotor 12 may be provided on the outer peripheral side of the stator 11. In this case, the same effects as those of the above embodiments can be obtained.

In each of the above embodiments, the present invention is embodied in a rotating magnetic field type motor. However, the present invention is not limited to the rotating magnetic field type motor, and other rotary motors having a rectangular winding (motors, etc.) And may be implemented. In this case, the same effects as those of the above embodiments can be obtained.

Next, technical ideas other than the invention described in the claims that can be grasped from the above embodiment and other examples will be described below together with their effects. (1) In the method of manufacturing a rotary electric motor according to claim 4, the coil is formed by twisting the straight common linear connecting portion (52b) between the U-shaped portions (52a) such that the U-shaped portions (52a) overlap each other. A method for manufacturing a rotary electric motor, wherein a wire (52) is folded.

Accordingly, in addition to the effect of the invention described in claim 4, it is possible to increase the manufacturing efficiency of the winding sub-assembly and simplify the manufacturing management. (2) In the method for manufacturing a rotary electric motor according to claim 5, the width (A) between inner surfaces of the first U-shaped portion (42a).
Is the difference (B−) obtained by subtracting the line width (C) of the coil wire (42) from the width (B) between the inner surfaces of the second U-shaped portion (42b).
A method for manufacturing a rotary electric motor, wherein the method is set equal to (C).

Therefore, in addition to the effect of the invention described in claim 5, the winding sub-assembly can be made more easily.

[0067]

As described in detail above, according to any one of the first, second and sixth aspects, a rectangular winding can be easily wound (mounted) on each tooth.
It is possible to reduce the number of manufacturing steps and manufacturing cost of the rotary electric motor.

According to the invention of claim 3, according to claim 2,
In addition to the effects of the invention described in (1), the number of manufacturing steps and manufacturing cost of the rotary electric motor can be further reduced. Claim 4
According to the invention described in (1), in addition to the effects of the inventions described in (2) and (3), the operation of folding each U-shaped portion of the coil wire can be performed easily and accurately.

According to the invention set forth in claim 5, according to claim 4,
In addition to the effects of the invention described in (1), the winding sub-assembly can be made more easily.

[Brief description of the drawings]

FIG. 1 is a plan view of a rotating magnetic field type electric motor according to a first embodiment.

FIG. 2 is an exploded perspective view of a main part of a stator of the rotating magnetic field type electric motor.

FIG. 3 is an explanatory view showing a method of manufacturing a coil wire for producing a winding sub-assembly.

FIG. 4 is a perspective view of a coil wire.

FIG. 5 is an explanatory view showing a method of folding a coil wire.

FIG. 6 is a perspective view showing a plate member for producing a winding sub-assembly according to a second embodiment.

FIG. 7 is an exemplary perspective view of the coil wire according to the embodiment;

FIG. 8 is an explanatory view showing a method of folding a coil wire.

FIG. 9 is an explanatory view showing a method of folding a coil wire.

FIG. 10 is a perspective view of another example of a coil wire.

FIG. 11 is a plan view of another example of a coil wire.

FIG. 12 is a perspective view of another example of a coil wire and a winding sub-assembly.

[Explanation of symbols]

Reference numeral 10: rotating magnetic field type electric motor, 11: stator, 12: rotor, 16: teeth, 17: rectangular winding, 30, 50, 8
0: winding sub-assembly, 42, 52, 62: coil wire, 42a: first U-shaped part, 42b: second U-shaped part,
42c: bending displacement correcting section, 52a: U-shaped section, 52b: straight common connecting section, 62a to 62h: side, K1 to K6: folding line.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsuhiko Matsushita 390 Umeda, Kosai-shi, Shizuoka Prefecture Asmo Co., Ltd. (72) Inventor Yoshito Nishikawa 390 Umeda, Kosai-shi, Shizuoka Prefecture Asmo Co., Ltd. (72) Inventor Miki Suzuki Introduction 390 Umeda, Kosai-shi, Shizuoka Asmo Co., Ltd. (72) Inventor Akihiro Suzuki 390 Umeda, Kosai-shi, Shizuoka Asmo Co., Ltd.F-term (reference) 5H002 AA07 AB01 AB06 AC08 AE08 5H603 AA03 AA09 BB01 BB05 BB12 CA01 CA02 CA05 CB01 CC11 CC17 CD01 CD04 CD14 CD21 CD32 CD33 CE01 EE03 EE12 5H604 AA08 BB01 BB08 BB14 CC01 CC05 CC16 5H615 AA01 BB01 BB05 BB14 BB16 PP01 PP06 PP12 PP13 QQ02 QQ09 QQ19 QQ27 SS03 SS04 SS05 SS09 SSSS SS19

Claims (6)

[Claims] 1. A method for manufacturing a rotary electric motor in which a rectangular winding (17) is wound around a tooth (16) provided on one of a stator (11) and a rotor (12). ) Is a plate material (41, 6) of a material for winding.
1) is formed by punching to form a coil wire (42, 52, 62) which is continuous in a zigzag manner.
The winding subassemblies (30, 50, 80) are formed by folding the winding subassemblies (30, 50, 80), and the teeth (1
6) A method for manufacturing a rotary electric motor, wherein the method is mounted on. 2. A method for manufacturing a rotary electric motor in which a rectangular winding (17) is wound around a tooth (16) provided on one of a stator (11) and a rotor (12). ) Forms a winding sub-assembly (30, 50) by folding a coil wire (42, 52) continuously formed in a U-shaped zigzag into a coil shape, and forms the winding sub-assembly (30, 50). A method for manufacturing a rotary electric motor, comprising: mounting a tooth on a tooth (16). 3. The rotary electric motor according to claim 2, wherein the coil wire (42, 52) is formed by stamping and forming a plate (41) of a material for winding. Manufacturing method. 4. The method for manufacturing a rotary electric motor according to claim 2, wherein the coil wire (42, 52) has a plurality of U-shaped portions (42).
a, 42b, 52a), and folded in order from one end of the coil wire (42, 52) toward the other end of the coil wire (42) such that the U-shaped portions (42a, 42b, 52a) overlap each other. A method for manufacturing a rotary electric motor, characterized in that: 5. The method for manufacturing a rotary electric motor according to claim 4, wherein the coil wire (42) is provided with a first U-shaped portion (42a) formed at one end of the coil wire (42). A plurality of other second U-shaped portions (42) continuously formed to the other end of the coil wire (42) adjacent to one U-shaped portion (42a).
b), between the first U-shaped portion (42a) and the second U-shaped portion (42b) and between the second U-shaped portions (42b). ) Is provided, and the bending deviation correcting section (42c) is provided.
Of the U-shaped portions (42a, 42b) in order from the first U-shaped portion (42a) toward the other end of the coil wire (42) so that the respective U-shaped portions (42a, 42b) overlap each other with the center line of A method for manufacturing a rotary electric motor, comprising: 6. A method for manufacturing a rotary electric motor in which a rectangular winding (17) is wound around a tooth (16) provided on one of a stator (11) and a rotor (12). ) Cuts the plate material (61) of the winding material into alternate staggered comb teeth to form a coil wire (62) continuous in a zigzag pattern, and each adjacent comb tooth side (62a) of the coil wire (62). To 62h) are formed so as to undulate in an alternately uneven shape, and each adjacent protruding side (62a, 62c, 62e, 62g) and each adjacent concave side (62b, 62d, 62f, 62h). ) Is compressed and folded into a coil shape such that the coil sub-assembly (80) is substantially continuous, thereby forming a winding sub-assembly (80).
0) is attached to a tooth (16).