JPH07322578A - Manufacture of stator for motor - Google Patents

Abstract

PURPOSE:To eliminate the ineffective space, which may often occur at the inner diametral part of a slot, by shifting a coil, wound in series around a tooth part and fitted in a slot, efficiently in the inner diametral side. CONSTITUTION:When a coil is wound in series, rising parts A3-3, B3-5 are projected farther than a rotor hole toward the inner diametral side. Consequently, a linear coil end is provided and the coil is shifted efficiently toward the inner diametral side of a slot and thereby the ineffective space can be eliminated at the inner diametral part of the slot. Upon finishing the winding, the rising part B3-5 and the coil are extended in the outer peripheral direction of the tooth part core 4 thus ensuring the space required for inserting the rotor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an electric motor stator used for driving a fan of home electric appliances such as a fan and a ventilation fan.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for simplification of manufacturing of motor stators as well as cost rationalization. Further, in general, when a coil is directly wound from the outer diameter portion to a motor stator of this type, an opening for direct winding of the coil is required at the outer peripheral portion, but the stator core is provided at the yoke portion. There are two methods, that is, a method of providing the same number of openings as the number of slots of No. 1 and a method of dividing the stator core into a yoke portion and a tooth portion and providing an opening in the outer peripheral portion of the tooth core. Usually, the latter is adopted because of its ease of assembly, and the present invention also eliminates the problem when the latter coil winding method is adopted and gives a great effect.

Conventionally, the manufacturing method of this type of electric motor stator has generally been constructed as shown in Japanese Patent Application No. 62-187207. The configuration will be described below with reference to FIGS. 11 to 15. As shown in the figure, the tooth core 11
Reference numeral 0 denotes a plurality of teeth 112 of the same shape arranged radially outward of a rotor hole 111 into which a rotor (not shown) is inserted, and each tooth 112 is integrally connected by an insulating resin 113, A slot 115, which is a space around which the coil 114 is wound, is formed between the teeth 112. The tooth 1
A convex portion 116 projecting in the circumferential direction is provided on the outer circumference of the groove 12, and the slot 1 is provided between the convex portion 116 and the adjacent convex portion 116.
An opening 117 for winding a coil is formed on the coil 15. The coil wire 114-1 supplied from the winding machine fryer 118 slides down the slope of the coil guide jig 119 mounted on the outer peripheral edge of the tooth core 110, and the opening 11
It was a manufacturing method in which the coil 114 was housed in the slot 115 from 7 and formed.

[0004]

In such a conventional method for manufacturing a motor stator, the coil wire 114-1 slid down the smooth slope of the coil guide jig 119 has a coil end portion 114-2 which is a ring. The rising portions 113-1 tend to be linearly arranged as the inner diameter side limit line, so that it is difficult to fit them in the inner portion (inner diameter portion) of the slot 115. Therefore, if it is attempted to wind the coil more than the amount shown in FIGS. 10 and 11, the coil wire 141-1 overflows from the opening 117 and the coil cannot be wound. That is, although there is a winding space, it is an ineffective space and cannot be actually wound, and there is a problem that the slot area cannot be effectively utilized.

The present invention solves the above problems by effectively utilizing a slot space in a manufacturing process of an electric motor, that is, by efficiently winding a coil wound directly around a tooth portion and fitted in the slot in the inner diameter direction of the slot. The first purpose is to secure an insertion space for the rotor by eliminating the ineffective space that tends to be generated near the inner diameter of the slot.

A second object is to prevent the rising portion B and the toothed iron core from being deformed even when the coil tension is applied to the rising portion B and the toothed iron core during the winding operation of the coil. It is in.

A third object is to secure the expansion space to the outer diameter side of the coil when the standing portion B is pressed and deformed when the coil is wound directly, and the rising portion B is deformed under pressure.

A fourth object is to mount the receiving jig without deforming the rising portion B.

A fifth object of the present invention is to reduce the necessary expansion force during the expansion work of the wound coil in the outer peripheral direction of the tooth core without reducing the number of coil wires to be accommodated in the slots, and to prevent disconnection or damage of the coil. To prevent.

A sixth object is to prevent deformation and damage of the inner diameter of the tooth core in the step of pressurizing and deforming the rising portion B and the subsequent steps.

A seventh object is to prevent the rising portion B and the coil from contracting and deforming again in the inner diameter direction.

An eighth object is to prevent the root portion of the rising portion B from being damaged when the rising portion B is deformed by pressure in the outer peripheral direction.

A ninth object is to expand the coil in the outer peripheral direction efficiently and reliably.

The tenth object is to prevent warping and deformation of the insulating material on the front and back surfaces of the stator and to minimize the reduction of the slot area.

An eleventh object is to reduce the defect rate at the time of molding when the rising portion B is integrally molded of resin and prevent the rising portion B from being damaged in the pressurizing and deforming process of the rising portion B. Especially.

[0016]

A first means for achieving the first object of the present invention is to provide teeth and an outer peripheral edge portion, which are provided substantially radially on the outer periphery of a rotor hole and have an integral multiple of the number of poles. A tooth core having an opening for winding a coil directly around it, a coil surrounded by a plurality of teeth and housed in the slot through an insulating material, and fitted to the outer periphery of the tooth core after coil winding In the stator composed of a yoke core that forms a magnetic path, the insulating material radially integrates adjacent teeth at the inner peripheral edge of the tooth core, and the side surface of the slot and the tooth are integrated. A coil guide rib A projecting in the axial direction of the rotor integrally with the surface of the iron core, a ring-shaped rising portion A provided at a position protruding toward the inner diameter side from the inner circumference of the tooth core, and a rising portion A Terminal block for integrated coil end processing, back side of tooth core and A coil guide rib B extending in the axial direction of the rotor integrally with this and a rising portion B extending further obliquely in the inner diameter from the inner peripheral edge of the tooth core are integrally provided, and the root of the rising portion B is The manufacturing method is a hinge structure having a movable function and including a step of expanding the rising portion B and the wound coil in the outer peripheral direction of the tooth core after the winding of the coil is completed.

The second means for achieving the second object is made of metal or hard resin along the inner diameter portion of the tooth core and the inner diameter portion of the rising portion B during the coil winding operation. The manufacturing method is such that the coil is wound directly while the receiving jig is attached to the tooth core and the inner diameter of the rising portion B.

A third means for achieving the third object is a structure in which a rib cover which is a part of the coil guide rib B on the back surface of the tooth core provided with the rising portion B is removable. The manufacturing method is such that the coil is mounted before the direct winding operation and removed after the operation is completed.

A fourth means for achieving the fourth object is a manufacturing method of a structure in which the receiving jig is inserted with the rising portion A on the tooth core surface removed.

Further, a fifth means for achieving the fifth object is the plane shape of the coil end of the B-phase coil which is arranged at an electrical angle of 90 ° after winding the A-phase coil in the coil winding work. Is formed in an arc shape or a V shape, and is wound without lowering a predetermined winding tension.

A sixth means for achieving the sixth object is a structure in which the receiving jig can be divided into an inner diameter holding portion of the tooth core and a holding portion of the rising portion B. In the manufacturing method, only the holding portion of the portion B moves in the rotor axial direction.

A seventh means for achieving the seventh object is that, in the step of pressurizing and deforming the rising portion B, the pressurizing deformation is completed and at the same time, the inner diameter guide is moved to the inner diameter of the rising portion B. The manufacturing method is such that it is mounted on the section.

The eighth means for achieving the eighth object is that the rising portion B is provided at a position where the outer circumference of the rotor hole is divided into an integer number, and the root thereof is not an arc shape but a linear shape. The manufacturing method having the above structure is adopted.

In the ninth means for achieving the ninth object, the rising portion B is provided with reference to the position of the inner coil wound near the rotor hole, and at least the center of the coil is provided. And a position for supporting both ends of the coil end portion.

Further, the first to achieve the tenth object
No. 0 means is that the insulating material on the inner surface of the slot is provided in a part that does not hinder the direct winding of the coil, and the front surface and the back surface of the stator are connected together to be integrally molded. Insulation is mainly performed by the insulating film.

Further, the first for achieving the eleventh object
The first means is a manufacturing method in which the rising portion B is integrated with the receiving jig and the wound coil is expanded to the outer peripheral side of the tooth core, and then another component made of an insulating material is mounted.

[0027]

According to the present invention, since the rising portion A and the rising portion B are provided so as to project to the inner diameter side from the rotor hole when the coil is directly wound by the manufacturing method of the first means described above, The end is linear, and the coil is efficiently displaced toward the inner diameter side of the slot, so that the void space in the inner diameter portion of the slot can be eliminated.

According to the manufacturing method of the second means, since the receiving jig is mounted on the inner diameter side of the flexible rising portion B at the base, tension is applied during the direct winding of the coil. Also, the rising portion B can be prevented from being deformed, and the tooth core integrated with the insulating material is also prevented from being deformed.

According to the manufacturing method of the third means, the rib cover which is a part of the coil guide rib B for the inner coil, which is mounted when the coil is directly wound, is removed when the rising portion B is deformed under pressure. Therefore, a space is provided on the outer diameter side of the inner A-phase coil, and the rising portion B and the coil can be easily expanded to the outer diameter side of the tooth core.

Further, according to the manufacturing method of the fourth means, since the receiving jig is inserted with the rising portion A removed,
Extremely smooth work is possible, and the receiving jig can be mounted without deforming the rising portion B.

According to the manufacturing method of the fifth means, the planar shape of the coil end is made into an arc shape or a V shape, and the coil end is wound without lowering the winding tension to reduce the number of coil strands contained in the slot. Without this, it is possible to reduce the required expansion force and prevent the occurrence of coil breakage and scratches when expanding the wound coil in the outer peripheral direction of the tooth core.

Further, according to the manufacturing method of the sixth means, the receiving jig is divided into the tooth portion iron core holding portion and the rising portion B holding portion, and the tooth portion iron core holding portion is mounted even after the winding of the coil is completed. Since it is continued, it is possible to prevent deformation and damage of the inner diameter of the tooth core.

Further, by the manufacturing method of the seventh means, immediately after the coil and the rising portion B are expanded in the outer peripheral direction of the tooth core, the inner diameter guide is attached to the inner diameter side of the rising portion B again in the inner diameter direction. It is possible to prevent contraction and deformation.

Further, according to the manufacturing method of the eighth means, since the root portion of the rising portion B is not an arc shape but a straight shape, it can be bent easily and damage to the rising portion B can be prevented.

Further, according to the manufacturing method of the ninth means, since the center of the coil end portion of the A-phase coil wound near the rotor and the rising portions B on both sides are provided, the coil can be efficiently and surely removed. It can be expanded in the circumferential direction.

Further, according to the manufacturing method of the tenth means, since the insulating material is integrally molded, the front and back surfaces of the tooth core are connected by using only the outer peripheral side surface and a part of the inner peripheral end portion. Since the insulating material is prevented from warping or deforming, and the slot is insulated by the insulating film, the reduction of the slot area can be minimized.

Further, according to the manufacturing method of the eleventh means, since the rising portion B is integrated with the receiving jig, the defective rate at the time of integrally molding the insulating material is reduced and the rising portion B is subjected to the pressure deformation process. The rising part B can be prevented from being damaged.

[0038]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
From now on, description will be made with reference to FIG. 7. As shown in the figure, a plurality of teeth 1 in which an iron core plate is punched out and laminated in the axial direction of a rotor (not shown below) are arranged radially around the rotor hole 2 into which the rotor is inserted. 1 is integrally connected to the outer peripheral portion of the rotor hole 2 by an insulating material 3 to form an opening 6 for direct winding of the coil 5 on the outer peripheral edge portion of the tooth core 4 and the tooth iron. The insulating material 3 on the front surface and the back surface of the core 4 is connected and integrated at a part of the adjacent tooth 1 and the slot 7 constituted by the tooth 1.

Further, on the surface of the toothed iron core 4, there is a ring-shaped standing at a position projecting to the inner diameter side from the coil guide rib A3-1 projecting in the axial direction of the rotor and the inner peripheral edge of the toothed iron core 4. Raising part A3-2 and this ring-shaped rising part A3-
Pin terminal 8 for terminal treatment of coil 5 integrated with 2
1 has a terminal block portion 8 provided with a coil guide rib B3-3 on the back surface of the tooth core 4 and a thin-walled portion 3 integrally therewith.
-4, and has a rising portion B3-5 that extends from the inner peripheral edge portion of the tooth portion iron core 4 in the diagonal direction of the inner diameter. The yoke portion iron core 9 is fitted to the outer diameter side of the tooth portion iron core 4 to form a magnetic path to form a stator.

With the above structure, the coil 5 is directly wound from the opening 6 on the outer peripheral side of the tooth core 4 by the flyer winding machine 10 or the like, and surrounds the plurality of teeth 1 for each pole and for each phase. Is stored in. First, the A-phase coil 5-1 is housed in the slots 7-1 to 7-6, 7-7 to 7-12, 7-13 to 7-18, and 7-19 to 7-24, but has a ring-shaped standing. The raising portion A3-2 is provided at a position protruding toward the inner diameter side from the inner peripheral edge portion of the tooth portion iron core 4, and the raising portion B3
The coil end of the A-phase coil 5-1 is linear because the 3-5 is provided along the inner peripheral edge portion of the tooth portion iron core 4 in the diagonal direction of the inner diameter, and thus the A-phase coil 5-1 is a slot. 7 is stored closer to the inner diameter side. Phase A coil 5
-1 and the winding of the B-phase coil 5-2 arranged at a position different in electrical angle by 90 degrees from this is completed, and the insulating member 10 for preventing leakage of the coil is mounted inside the opening 6 of the slot 7. , By utilizing the hinge structure of the thin portion 3-4 at the base to expand the rising portion B3-5 toward the outer diameter side of the tooth core 4, the A-phase coil 5-1 and the B-phase coil 5- Two
It is possible to secure a space for assembling the rotor by expanding only the coil end of the outer peripheral direction.

As described above, according to the method of manufacturing the electric motor stator of the first embodiment of the present invention, the coils 5-1 and 5-5 are obtained by bringing the coil end closer to the inside than the inner diameter portion of the tooth core 4.
-2 can be stored close to the inner diameter side of the slot 7,
It is possible to eliminate an ineffective space that is likely to occur in the inner diameter portion of the slot 7.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted (hereinafter, referred to as the first embodiment).
The same up to one example).

As shown in the figure, a receiving jig 12 made of metal or hard resin is mounted along the inner diameter of the tooth core 4 and the inner diameter of the rising portion B3-5.

With the above construction, the coil wire 5-3 supplied from the fryer winding machine 10 slides on the smooth slope of the winding guide jig 11 and is accommodated in the slot 7, but the coil 5
Since it is wound while applying tension, it tries to deform by giving a contracting force to the rising portion B3-5 and the tooth core 4 but the rising portion B3-5 and the inner diameter of the tooth core 4 are deformed. Since the receiving jig 12 is attached along the above, these deformations can be prevented.

As described above, according to the method of manufacturing the motor stator of the second embodiment of the present invention, since the coil 5 is wound directly while the receiving jig 12 is mounted, the start-up portion B3-
5 can be prevented from deforming, and the tooth core 4 integrated with the insulating material 3 can also be prevented from deforming.

Next, a third embodiment of the present invention will be described with reference to FIGS. As shown in the figure, the same number of coil guide ribs B3-3 as the number of coils 5 are provided on the back surface of the tooth core.
A rib cover 3-6 is attached to the.

With the above structure, the direct winding of the A-phase coil 5-1 and the B-phase coil 5-2 is completed, and when the rising portion B is deformed under pressure, the rib cover 3-6 is removed to remove the A-phase coil. A space can be obtained on the outer diameter side of.

As described above, according to the method for manufacturing an electric motor stator of the third embodiment of the present invention, a space is secured on the outer diameter side of the A-phase coil 5-1 so that the start-up portion B3-5 and the above-mentioned portion are formed. The A-phase coil 5-1 and the B-phase coil 5-2 can be easily deformed and expanded to the tooth core outer diameter side.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. As shown in the figure, the rising portion A is detachably attached and fixed to the inner diameter portion of the coil guide rib A3-1.

With the above-mentioned structure, the receiving jig 12 has the rising portion A3-2 attached to the inner diameter portion of the coil guide rib A3-1 on the surface of the tooth core 4 removed and inserted, and the tooth core 4
And the rising portion B3-5 is attached to the inner diameter portion thereof, and thereafter, the rising portion A3-2 again has the coil guide rib A3-.
It can be fixed to the inner diameter portion 1.

As described above, according to the method of manufacturing the electric motor stator of the fourth embodiment of the present invention, since the receiving jig 12 is inserted with the rising portion A3-2 removed, an extremely smooth work is possible. Therefore, the receiving jig 12 can be mounted without deforming the rising portion B3-5.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. As shown in the figure.

In the above structure, the B-phase coil 5-2 is A
It is wound directly around the phase coil at an electrical angle of 90 °.
The planar shape of the coil end is formed in an arc shape that bulges toward the inner diameter side of the tooth core 4.

As described above, according to the method of manufacturing the electric motor stator of the fifth embodiment of the present invention, the B-phase coil 5-2 has a predetermined winding applied to the coil wire 5-3 during direct winding. Since the plane shape is wound in an arc shape on the outer diameter side of the A-phase coil 5-1 without changing the tension, it is wound without reducing the number of turns of the coil wire 5-3 housed in the slot 7. When the coil 5 is expanded in the outer peripheral direction of the tooth core 4, it is possible to reduce the necessary expansion force and prevent the coil 5 from being broken or scratched.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG.

As shown in the figure, the receiving jig 12 is divided into a tooth portion core holding portion 12-1 and a rising portion B holding portion 12-2.

In the above structure, the tooth portion core holding portion 12-1 of the receiving jig 12 after the coil 5 is directly wound and the inner diameter portion of the tooth portion iron core 4 is held, and the rising portion B holding portion 12- Two
Only the lower part moves downward and the start-up part B3-5 and the coil 5
Is deformed under pressure toward the outer diameter side of the tooth core 4 to expand.

As described above, according to the method of manufacturing the electric motor stator of the sixth embodiment of the present invention, the receiving jig 12 causes the inner diameter holding portion 12-1 of the tooth core 4 and the rising portion B holding portion 12-2.
It has a structure that can be divided into
Since only -2 moves in the axial direction of the rotor, it is possible to prevent deformation and damage of the tooth core 4 and the insulating material 3 due to the contracting force of the coil 5 wound directly.

Next, a seventh embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG.

As shown in the figure, an inner diameter guide 13 is attached to the inner diameter portion of the rising portion B3-5 in a state of being expanded by being pressed and deformed by the receiving jig 12.

In the above structure, the inner diameter guide 13 is mounted on the inner diameter portion of the rising portion B3-5 immediately before the pressure deformation is finished, and then the receiving jig 12 is removed.

As described above, according to the method of manufacturing the electric motor stator of the seventh embodiment of the present invention, the inner diameter guide has the rising portion B.
Since it is mounted on the inner diameter side, the coil 5 and the rising portion B3-5 can be prevented from contracting and deforming in the inner diameter direction of the tooth core 4 again after the receiving jig 12 is attached and detached.

Next, an eighth embodiment of the present invention will be described with reference to FIGS. 1 and 14.

As shown in the drawing, the rising portion B3-5 is connected to the coil guide rib B3-3 via the thin portion 3-4, and is formed so as to extend in the diagonal direction of the inner diameter of the tooth core 4.

In the above structure, the root portion of the rising portion B, that is, the thin portion 3-4 is provided so as to be linearly connected to the coil guide rib B instead of being arcuate.

As described above, according to the method of manufacturing the electric motor stator of the eighth embodiment of the present invention, since the root portion of the rising portion B, that is, the thin portion 3-4 is linear, the rising portion B is bent. This makes it easy to prevent the rising portion B and the coil 5 from being damaged during the pressure deformation work.

Next, a ninth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. As shown in the figure, the tooth core 4
A-phase coil 5-1 for one pole wound directly on the inner diameter side of
Are three start-up parts B3-5a, 3-5b, 3-5c
It is wrapped so that it overlaps with the top.

In the above structure, three start-up parts B3
-5a, 3-5b, 3-5c are respectively provided at positions supporting the center, left side, and right side of the A-phase coil 5-1 for one pole,
The same applies to the A-phase coil of the other pole.

As described above, according to the method of manufacturing the electric motor stator of the ninth embodiment of the present invention, the three starting portions B3-5 are provided.
a, 3-5b and 3-5c are A-phase coils for one pole 5-
Because it is provided in the position to support the center of 1, the left side, and the right side,
Three rising parts B3-5a, 3-5b, 3-5c in the pressurizing deformation and expansion process of the coil 5 and the rising part B.
Can reliably and efficiently work with equal force on the A-phase coil 5-1.

Next, a tenth embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG.

As shown in the figure, the insulating material 3a on the inner peripheral portion of the tooth core 4 and the insulating material 3b on the outer diameter side and provided on the wall surface of a small portion of the slot 7 and the tooth core 4 are formed. The insulating materials 3 (including 3-1, 3-3, 3-5) on the front surface and the back surface are all integrally formed, and an insulating film 14 is attached to the side surface of the slot 7.

In the above structure, the insulating material 3a structurally connects the teeth 1 adjacent to each other on the inner peripheral portion of the tooth core 4, and the insulating material 3b forms the tooth portion at a very small part of the side wall in the slot 7. The insulating resin 3 on the front surface and the back surface of the iron core 4 is structurally connected, and the inside of the slot 7 is insulated by an insulating film.

As described above, according to the electric motor stator of the tenth embodiment of the present invention, the integral molding of the insulating material uses only the outer side surface of the slot and a part of the inner peripheral end portion of the tooth core. Since the front surface and the back surface of 4 are connected to each other, warping or deformation of the insulating material 3 is prevented, and the insulating film is used to insulate the slot, so that the reduction of the slot area can be minimized.

Next, an eleventh embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS.

As shown in the drawing, a receiving jig A12a integral with the rising portion B is mounted on the inner diameter portion of the tooth core 4 and the separate component 15 is the coil 5 wound directly and the receiving member. It is inserted and fixed to the tool A12a.

In the above structure, the receiving jig A12a is fixed to the inner diameter portion of the tooth core 4 and after the winding of the coil is completed, the receiving jig A12a is moved in the axial direction of the rotor to press the coil 5. It can be deformed and expanded in the outer diameter direction of the tooth core 4. Further, by inserting and fixing the separate member 15 between the coil 5 and the receiving jig A12a after completion of the expansion work, it is possible to prevent the coil 5 from contracting again in the inner diameter direction.

As described above, according to the method of manufacturing the electric motor stator of the eleventh embodiment of the present invention, since it is not necessary to form the thin portion having the hinge function by resin integral molding, the defective rate at the time of molding can be reduced. It is possible to reduce the number, and it is possible to prevent a situation in which the rising portion B is damaged because it does not have the rising portion B structurally.

[0078]

As is apparent from the above embodiments, according to the present invention, when the coil is directly wound, the rising portion A and the rising portion B are provided so as to project from the rotor hole toward the inner diameter side. Therefore, since the coil end is linear and the coil is efficiently moved toward the inner diameter side of the slot, it is possible to provide a method of manufacturing a motor stator that can eliminate an invalid space in the inner diameter portion of the slot.

Further, the rising portion B having flexibility at the root portion
Since the receiving jig is attached to the inner diameter side of
It is possible to provide a method of manufacturing an electric motor stator that can prevent the rising portion B from being deformed even when a tension is applied during the direct winding of the coil and also prevent the tooth core integrated with the insulating material from being deformed.

Further, since the rib cover, which is a part of the coil guide rib B for the inner coil, which is mounted when the coil is directly wound, is configured to be removed when the rising portion B is deformed by pressure, the inner A phase A space is provided on the outer diameter side of the coil, and it is possible to provide a method of manufacturing an electric motor stator that can easily extend the rising portion B and the coil to the outer diameter side of the tooth core.

Further, since the receiving jig is inserted with the rising portion A removed, an extremely smooth work is possible, and the receiving jig can be mounted without deforming the rising portion B. A method of manufacturing a stator can be provided.

Further, since the planar shape of the coil end is arcuate or V-shaped, the coil end is wound without lowering the winding tension to reduce the number of coil strands contained in the slot. It is possible to provide a method of manufacturing an electric motor stator that can reduce the necessary expansion force and can prevent the occurrence of coil breakage and scratches during the expansion work of the mounted coil in the outer peripheral direction of the tooth core.

Further, the receiving jig is divided into the tooth portion core holding portion and the rising portion B holding portion, and the tooth portion iron core holding portion is configured to continue to be mounted even after the winding of the coil is completed. It is possible to provide a method of manufacturing an electric motor stator that can prevent deformation and damage of the inner diameter of the iron core.

Further, since the inner diameter guide is attached to the inner diameter side of the rising portion B immediately after the coil and the rising portion B are expanded in the outer peripheral direction of the tooth core, the contraction deformation in the inner diameter direction is prevented again. It is possible to provide a method of manufacturing an electric motor stator that can be prevented.

Further, since the base portion of the rising portion B has a linear shape instead of an arc shape, it can be bent easily,
It is possible to provide a method of manufacturing an electric motor stator that can prevent the rising portion B from being damaged.

Further, since the center of the coil end portion of the A-phase coil wound near the rotor and the rising portions B on both sides are provided, the coil can be efficiently and surely expanded in the outer peripheral direction. It is possible to provide a method of manufacturing an electric motor stator that can be performed.

In addition, since the insulating material is integrally molded, the front and back surfaces of the tooth core are connected by using only the outer peripheral side surface of the slot and a part of the inner peripheral end portion. Since warping and deformation are prevented and the insulation of the slot is made of an insulating film, it is possible to provide a method of manufacturing an electric motor stator capable of minimizing the reduction of the slot area.

Further, since the rising portion B is constructed to be integrated with the receiving jig, the defect rate at the time of integrally molding the insulating material is reduced, and the rising portion B is pressed and deformed in the step of deforming the rising portion B. It is possible to provide a method of manufacturing an electric motor stator that can prevent damage.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a stator of a method for manufacturing an electric motor stator according to first, third, fourth, eighth, and tenth embodiments of the present invention.

FIG. 2 is a partial cross-sectional view of the first embodiment and the third embodiment seen from the upper surface.

FIG. 3 is a bottom view of the first and third embodiments after winding the A-phase coil.

FIG. 4 is a side sectional view showing a state of winding coils around a stator according to the first embodiment, the second embodiment, and the third embodiment.

FIG. 5 is a side sectional view showing the expansion work of the coils of the first embodiment, the third embodiment, and the fifth embodiment.

FIG. 6 is a bottom view showing the finished stator of the first embodiment.

FIG. 7 is a partial cross-sectional view showing a finished stator of the first embodiment.

FIG. 8 is a side sectional view showing the receiving jig of the fourth embodiment inserted.

FIG. 9 is a bottom view showing the stator after winding the winding wire of the fifth embodiment.

FIG. 10 is a side sectional view showing the stator after winding the winding wire according to the sixth embodiment.

FIG. 11 is a sectional side view showing the coil of the sixth embodiment during expansion work.

FIG. 12 is a side sectional view showing a stator after mounting an inner diameter guide of the seventh embodiment.

FIG. 13 is a side sectional view showing a stator when the receiving jig of the seventh embodiment is attached and detached.

FIG. 14 is an enlarged view showing a root portion of a rising portion B of the eighth embodiment.

FIG. 15 is a bottom view showing the stator after winding the A-phase coil for one pole in the ninth embodiment.

FIG. 16 is a partial cross-sectional view showing a stator of the tenth embodiment.

FIG. 17 is a side sectional view showing the winding of the stator of the eleventh embodiment.

FIG. 18 is a side sectional view showing the stator after the coil expanding work and another component mounting of the eleventh embodiment.

FIG. 19 is a top view of a stator showing a conventional method for manufacturing an electric motor stator.

FIG. 20 is a side sectional view showing the winding state of the same winding.

FIG. 21 is a top view of the same.

[Explanation of symbols]

 1 Tooth 3 Insulating Material 3-1 Coil Guide Rib A 3-2 Rising Part A 3-3 Coil Guide Rib B 3-4 Thin Part 3-5 Rising Part B 3-6 Rib Cover 4 Teeth Iron Core 5 Coil 5-1 A-phase coil 5-2 B-phase coil 7 Slot 12 Receiving jig 12a Receiving jig A 12-1 Tooth part iron core holding part 12-2 Start-up part B holding part 13 Inner diameter guide 14 Insulating film

Claims (11)

[Claims] 1. A tooth core having an integer multiple of the number of poles substantially radially provided on the outer periphery of a rotor hole, a tooth core having an opening for winding a coil directly around the outer peripheral edge, and a plurality of teeth. In a stator composed of a coil housed in the slot via an insulating material, and a yoke iron core that forms a magnetic path by being fitted to the outer periphery of the tooth iron core after winding the coil, the insulating material is The teeth adjacent to each other at the inner peripheral edge of the tooth core are integrated in the radial direction, and the side surface of the slot, the surface of the tooth core, and the coil guide rib A protruding integrally with the surface of the tooth core in the axial direction of the rotor and the tooth. A ring-shaped rising portion A provided at a position projecting to the inner diameter side from the inner circumference of the iron core, a terminal block portion for coil terminal processing integrated with the rising portion A, the back surface of the tooth core and the same. Coil guide rib B along the rotor axis and tooth core inside A rising portion B extending further from the peripheral portion in the diagonal direction of the inner diameter is integrally provided, and the root portion of the rising portion B has a hinge structure and has a movable function. A method for manufacturing an electric motor stator, which comprises a step of expanding the raised portion B and the wound coil in the outer peripheral direction of the tooth core. 2. At the time of coil winding work, a receiving jig made of metal or hard resin is provided along the inner diameter portion of the tooth core and the inner diameter portion of the rising portion B on the inner diameter portions of the tooth core and the rising portion B, respectively. The method for manufacturing an electric motor stator according to claim 1, wherein the coil is directly wound on the coil while being mounted. 3. The coil guide rib on the back surface of the tooth core provided with the rising portion B has a structure in which a rib cover, which is a part of the coil guide rib, can be attached and detached, and is mounted before the coil is directly wound.
The method of manufacturing an electric motor stator according to claim 1, wherein the electric motor stator is removed after the work. 4. The method for manufacturing an electric motor stator according to claim 1, wherein the receiving jig is inserted with the rising portion A on the surface of the tooth core removed. 5. In the coil winding operation, the planar shape of the coil ends of the B-phase coil arranged at an electrical angle of 90 ° after the winding of the A-phase coil is formed into an arc shape or a V shape, and the winding tension is reduced. The method for manufacturing an electric motor stator according to claim 1, wherein the motor stator is wound without being wound. 6. A structure in which a receiving jig has a structure capable of being divided into an inner diameter holding portion of a tooth core and a holding portion of a rising portion B, and only the holding portion of the rising portion B moves in the rotor axial direction. The method for manufacturing an electric motor stator according to claim 1. 7. The method of manufacturing an electric motor stator according to claim 1, wherein in the step of pressurizing and deforming the rising portion B, the inner diameter guide is attached to the inner diameter portion of the rising portion B at the same time when the pressure deformation is completed. . 8. The method of manufacturing an electric motor stator according to claim 1, wherein the rising portion B is provided at a position where the outer circumference of the rotor hole is divided into an integer number, and the root is not arcuate but linear. 9. The start-up portion B is provided with reference to the position of an inner coil wound near the rotor hole, and is provided at least at a position that supports the center portion of the coil and both ends of the coil end portion. Item 1. A method for manufacturing an electric motor stator according to item 1. 10. The insulating material on the inner surface of the slot is provided on a part of the coil that does not hinder the direct winding of the coil, and the front surface and the back surface of the stator are connected together to be integrally molded. The method of manufacturing an electric motor stator according to claim 1, wherein the insulating film is mainly used for insulation. 11. The electric motor according to claim 1, wherein the rising portion B is integrally formed with a receiving jig, and the wound coil is expanded to the outer peripheral side of the tooth core, and then a separate component made of an insulating material is mounted. Stator manufacturing method.