JP2014121167A - Insulator for tooth core of rotary electric machine, insulator fixture for tooth core of rotary electric machine, stator of rotary electric machine, rotary electric machine, and coil winding method of rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulator for a tooth core of a rotary electric machine which improves the maximum possible number of turns and space factor, and allows higher efficiency and smaller size of the rotary electric machine.SOLUTION: An insulator 3 for a tooth core of a rotary electric machine is provided which includes: a tube body 31 which covers the entire circumference of a trunk part of a split tooth core 11; a coil winding part 34 composed of an inner flange 32 and an outer flange 33 which are raised from both ends of the tube body 31; and an annular connection part 35 which is connected to one end part of a stator in an axial direction, at each inner flange 32. The insulator includes a fixing part 36 integrally molded with the inner flange 32, to be fixed to an insulator fixing bracket 5 which is separate from the insulator 3 inserted with the insulator 3 on an inner peripheral side on the insulator 3 when winding a coil 4, at an end part of the insulator 3 on the side having the connection part 35 and the opposite side of the stator in the axial direction.

Description

  The present invention relates to an insulator for a tee score of a rotating electrical machine in which a core is divided in the circumferential direction by the same number as the number of slots, or divided into a teeth portion and a yoke portion, and continuously wound around a plurality of cores in the same phase. The present invention relates to an insulator fixture for a teascore of a rotating electrical machine, a stator of the rotating electrical machine, a rotating electrical machine, and a coil winding method of the rotating electrical machine.

Conventionally, a technique described in Patent Document 1 has been proposed for a stator of a rotating electrical machine that is manufactured by fitting a plurality of tee scores to an annular yoke core and a manufacturing method thereof.
In the invention described in this document, insulating insulators are attached to a plurality of tee scores before assembly, and these tee scores are arranged at the same position as that of the stator configuration, and each is indexed with a winding index jig. The tip of the tea score is gripped from the inside of the stator, and then a coil is wound around each tea score in turn.

JP-A-11-178259

For example, in the electric motor of Patent Document 1, since the tip portion (shoe) of the tee score is gripped by the index jig and the coil is wound by the flyer nozzle, it is necessary to leave a gripping space on the yoke core side of the tooth tip portion.
Specifically, a holding space is provided between the insulator that insulates the tee score and the tip of the tooth, and this portion is held by an index jig.
However, with such a configuration, the space provided for gripping is wasted, and the space where the coil can be wound cannot be used effectively, and the space factor of the coil is reduced. It was.

  The present invention has been made to solve such a problem, and in the insulator for a tea score having an annular connecting portion for connecting an annularly disposed tea score, the maximum number of turns that can be wound is increased. An insulator for a tea machine for a rotating electrical machine, an insulator fixing tool for a tea score for a rotating electrical machine, a stator for the rotating electrical machine, a rotating electrical machine, It aims at providing the coil winding method of a rotary electric machine.

An insulator for a tea score of a rotating electrical machine according to the present invention is:
A plurality of divided tee scores around which a coil is wound are insulated for a coil and are disposed in an annular shape at equal intervals in a positional relationship when a stator is configured.
A cylinder that covers the entire circumference of the trunk of the split tee score,
A coil winding part composed of an inner flange and an outer flange standing upright from both ends of the cylindrical body,
Each inner collar consists of an annular connecting part connected to one end of the stator in the axial direction,
The insulator is fixed to an insulator fixture separate from the insulator that is inserted into the inner peripheral side of the insulator when the coil is wound around the side having the connecting portion and the end of the insulator opposite to the axial direction of the stator. And a fixing part integrally formed with the inner flange.

An insulator for a tea score of a rotating electrical machine according to the present invention is:
The insulator is fixed to an insulator fixture separate from the insulator that is inserted into the inner peripheral side of the insulator when the coil is wound around the side having the connecting portion and the end of the insulator opposite to the axial direction of the stator. Because it has a fixed part integrally molded with the inner flange,
When the coil is wound, the insulator connecting part and the fixing part are gripped to fix the insulator to the base part, thereby securing a space for gripping the wound body at a place related to the stator winding space. There is no need to do it.
For this reason, the maximum number of windings and the space factor that can be wound are improved, and the rotating electric machine can be highly efficient and downsized.

It is a top view which shows arrangement | positioning of the division | segmentation tee score and annular yoke core which concern on Embodiment 1 of this invention. It is a perspective view of the division | segmentation tea score which concerns on Embodiment 1 of this invention. It is an assembly process figure and perspective view of a stator concerning Embodiment 1 of this invention. It is the perspective view and side view of the insulator for tea scores which concern on Embodiment 1 of this invention. It is a perspective view which shows the base component and fixing plate which concern on Embodiment 1 of this invention. It is a figure which shows the state which has wound the coil in each coil winding part of the coil winding body attached to the base component which concerns on Embodiment 1 of this invention. It is a perspective view of the coil winding body which concerns on Embodiment 1 of this invention. It is a figure which shows the state which has wound the coil in each coil winding part of the coil winding body attached to the base component which concerns on Embodiment 2 of this invention. It is a perspective view of the chuck | zipper components which concern on Embodiment 2 of this invention. It is a perspective view which shows the state which attached and removed the chuck | zipper components which concern on Embodiment 2 of this invention. It is a figure which shows the state which has wound the coil in each coil winding part of the coil winding body attached to the base component which concerns on Embodiment 3 of this invention. It is sectional drawing explaining a mode that the coil winding body which concerns on Embodiment 3 of this invention is attached to a base component. It is sectional drawing explaining the manufacturing process of the rotary electric machine which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an insulator for a tea machine of a rotating electrical machine, an insulator fixture for a tea score of the rotating electrical machine, a stator of the rotating electrical machine, a rotating electrical machine, and a coil winding method of the rotating electrical machine according to the first embodiment of the present invention. It explains using.
In the present embodiment, description will be made using an example of a capacitor drive motor that is a kind of rotating electrical machine having a split core structure in which a stator is divided into eight split tee scores and one annular yoke core.
Further, in this specification, “outer side” and “inner side” refer to “outer side” in relation to the stator for the components mentioned on the spot, unless otherwise specified. It shall mean “inner circumference side”.

FIG. 1 is a plan view showing the arrangement of divided tee scores 11a to 11h according to Embodiment 1 of the present invention (hereinafter referred to simply as divided tee score 11 when there is no need to indicate individually) and an annular yoke core 12. FIG.
FIG. 2 is a perspective view of the divided tee score 11.
The divided tee score 11 is made of a magnetic material and has a press-fit portion 111 that is press-fitted into the annular yoke core 12 on the outer peripheral side.
The annular yoke core 12 is made of a magnetic material, and has a press-fit portion 121 on the inner peripheral side as shown in FIG. A stator core is configured by press-fitting the press-fitting part 111 of the divided tee score 11 into the press-fitting part 121.

FIG. 3A is a diagram showing a manufacturing procedure of the stator 10 manufactured in this embodiment, and before combining the coil winding body 30 around which the coil 4 is wound, the coil winding body 40 and the annular yoke core 12. It is a figure which shows the state of.
FIG. 3B is a diagram showing a state after the coil wound body 30 around which the coil 4 is wound, the coil wound body 40 and the annular yoke core 12 are combined.
The coil 4 wound around the coil winding body 30 constitutes a coil group having the same phase of the electric motor, and the coil 4 wound around the coil winding body 40 constitutes another coil group having the same phase.
The invention according to the first embodiment relates to a technique for gripping the coil winding bodies 30 and 40 when the coil 4 of the coil winding body 30 and the coil winding body 40 is wound.

FIG. 4A is a perspective view of the insulator 3.
FIG. 4B is a side view of the insulator 3.
The insulator 3 is integrally formed of an insulating material.
The insulator 3 includes a cylindrical body 31 that covers the entire circumference of the body portion of the split tee score 11, an inner collar 32 that is erected on the inner peripheral side of the cylindrical body 31, and an outer body that is erected from the outer peripheral side of the cylindrical body 31. The coil winding part 34 which consists of the collar 33, and the connection part 35 which has the cyclic | annular shape and connects the axial direction one end part of the stator 10 of the inner collar 32 are comprised.
The inner peripheral surface of the insulator 3 is formed along the outer periphery of a rotor (not shown) to be inserted therein.
Coil wound bodies 30 and 40 are obtained by inserting the split tee score 11 into the cylindrical body 31 of the insulator 3.
Further, the coil 4 wound around the coil winding portion 34 of the insulator 3 is passed along the connecting portion 35 to the adjacent coil winding portion 34.
The coil 4 wound around the insulator 3 forms an in-phase coil group of the electric motor.

The fixing which connects the edge parts of the inner collar 32 of the adjacent coil winding part 34 to the other end part on the opposite side to the one end part which provided the connection part 35 with respect to the axial direction of the stator 10 of the insulator 3. A portion 36 is provided.
A method of using the fixing portion 36 will be described later.

Next, a method of manufacturing the stator 10 by winding the coil 4 around the coil winding portions 34 of the coil winding bodies 30 and 40 will be described.
FIG. 5 is a perspective view showing the base component 5 and the fixing plate 55 (insulator fixing tool) to which the coil winding body 30 is attached during coil winding.
The base part 5 includes a connecting portion insertion portion 51 having a diameter smaller than that of the main body portion 53 at an upper end portion.
Further, chuck component mounting portions 52 are provided at equal intervals on the outer peripheral surface of the lower portion of the base component 5.
The fixing plate 55 has a pan lid shape that can be completely covered from above the connecting portion insertion portion 51 of the base component 5.
FIG. 6A is a perspective view showing a state where the coil 4 is wound around each coil winding portion 34 of the coil winding body 30 attached to the base component 5 (the flyer nozzle is omitted).
FIG. 6B is a top view of FIG.
In addition, although the coil winding method about the coil winding body 30 is demonstrated here, it is the same also about the coil winding body 40. FIG.

First, the insulator 3 is covered from the upper side of the base part 5, and the connecting part insertion part 51 of the base part 5 is inserted into the inner peripheral side of the connecting part 35 of the insulator 3.
Next, the fixing plate 55 is completely put on the connecting part insertion part 51 of the base part 5 from above the connecting part 35 of the insulator 3, and is fixed to the base part 5 with the screw 20 that becomes the rotating shaft 21 of the base part 5.
As described above, the connecting portion 35 of the insulator 3 is sandwiched and fixed between the base component 5 and the fixing plate 55.

Further, the fixing part 36 of the insulator 3 is fixed to the chuck part mounting part 52 of the base part 5 with the screw 25 by the chuck part 6.
At this time, the bottom portion (including the fixed portion 36) on the inner peripheral side of the insulator 3 is also formed in an annular shape (the fixed portion 36 portion has an arc shape) so as to closely follow the bottom portion on the outer peripheral side of the base component 5. .
As a result, the insulator 3 is fixed to the base component 5 from both the upper and lower directions in FIG.

The base component 5 has a mechanism that rotates around the center of the screw 20 as the rotation shaft 21, and the flyer nozzle 7 of FIG. 6B has a mechanism that rotates around the rotation shaft 19.
The fryer nozzle 7 is a hollow cylinder, and a wire 17 is supplied from the tip through the inside.
With the rotation of the flyer nozzle 7, the wire 17 is wound around each winding portion in order to form the concentrated winding coil 4.

Since the coil wound body 30 has a structure in which the divided tee scores 11a to 11d are arranged in an annular shape, the divided tee scores 11a to 11d can be turned into the flyer nozzle 7 simply by rotating the base part 5 around the rotation axis by 90 °. It can be made to oppose in order.
At this time, the crossover between the coils 4 is not cut, and is arranged along the connecting portion 35 of the insulator 3.
In this way, the coil 4 is wound continuously on the divided tee scores 11a to 11d.

FIG. 7A is a perspective view of the coil wound body 30 after the coil 4 is wound.
FIG. 7B is a perspective view of the coil wound body 30 after the fixing portion 36 is cut.
After winding all the coils 4 of the coil winding body 30 as shown in FIG. 7A, the fixing portion 36 is cut as shown in FIG. 7B.
Similarly, the coil 4 is wound around the coil wound body 40, and then, as shown in FIG. 3B, the coil wound bodies 30, 40 and the annular yoke core 12 are integrated to form the stator 10 of the rotating electrical machine. obtain.

According to the insulator 3 for a tea machine of a rotating electrical machine, the insulator fixing tool for a tea core of the rotating electrical machine, the stator 10 of the rotating electrical machine, the rotating electrical machine, and the coil winding method of the rotating electrical machine according to the first embodiment of the present invention. The following effects can be obtained.
First, the fixing portion 36 is provided in the insulator 3, and when the coil 4 is wound, the fixing portion 36 is gripped and the insulator 3 is fixed to the base part 5, so that a place related to the winding space of the stator 10 is obtained. There is no need to secure a space for gripping the coil winding body 30.
As a result, the maximum number of turns that can be wound and the space factor are improved, and the rotating electric machine can be made highly efficient and downsized.

Moreover, since the structure of the insulator 3 is a structure in which the divided tee scores 11a to 11d are annularly arranged, the in-phase coil winding part 34 is opposed to the flyer nozzle 7 in order only by rotating the base part 5 around the rotating shaft 21. In addition, since the crossover can be routed along the connecting portion 35 of the insulator 3, the winding operation can be simplified and speeded up, and productivity can be improved.
Further, since the fixing portion 36 of the insulator 3 is provided between the adjacent in-phase cores, even when the flyer nozzle 7 is wound on the innermost peripheral side of the coil 4, the range through which the flyer nozzle 7 and the wire 17 pass and the chuck component 6. Thus, the coil 4 can be wound without interference, and the coil winding apparatus can be downsized.
Furthermore, the rigidity of the insulator 3 is increased by providing the fixing portion 36 of the insulator 3 so as to join the inner flanges 32 of the adjacent coil winding portions 34.

Embodiment 2. FIG.
Hereinafter, the second embodiment of the present invention will be described with reference to the drawings, focusing on portions different from the first embodiment.
FIG. 8A is a perspective view of the coil winding body 230 attached to the base component 205.
FIG. 8B is a side view of FIG.
FIG. 9 is a perspective view of the chuck component 206.
FIG. 10 is a view showing the periphery of the chuck part mounting portion 252 of the insulator 203 and the chuck part 206, and is an enlarged perspective view seen from the direction B in FIG.
FIG. 6A is a view showing a state in which the fixing portion 236 of the insulator 203 is fixed by the chuck component 206, and FIG. 6B is a view showing a state before the chuck component 206 is attached.

The difference between the first embodiment and the present embodiment is that the fixing portion 236 of the insulator 203 and the shape of the chuck component 206 and the installation position of the chuck component 206 are different, and the other configurations are the same as those of the first embodiment. .
Therefore, in the present embodiment, only the shapes of the fixing portion 236 and the chuck component 206 will be described.

  As shown in FIG. 8, the connecting portion 235 of the insulator 203 is sandwiched and fixed between the fixing plate 55 and the base component 205, and the chuck component 206 is attached to the chuck component attaching portion 252 of the base component 205 to fix the insulator 203. By sandwiching 236, the insulator 203 is fixed to the base part 205, and the coil 4 is wound.

In the first embodiment, the fixing part 36 of the insulator 3 is temporarily installed in the middle of the adjacent coil winding part 34 so that the chuck component 6 for fixing the attachment part 10 of the insulator 3 and the flyer nozzle 7 do not interfere with each other. In this embodiment, as shown in FIG. 9, for example, two claw portions 16 are provided on the chuck component 206, and as shown in FIG. 10, the end of the inner flange 232 on the side not connected to the connecting portion 235 is extended, A concave fixing portion 236 is provided to be fitted into the claw portion 16.
As shown in the part surrounded by the broken line in FIG. 8B, the chuck part 206 is entirely on the inner peripheral side of the stator from the inner flange 232 of the insulator so that it does not interfere with the wire 17 and the flyer nozzle 7. It is set as the structure arrange | positioned.

  According to the insulator for the tea score of the rotating electrical machine, the insulator fixing tool for the tea core of the rotating electrical machine, the stator of the rotating electrical machine, the rotating electrical machine, and the coil winding method of the rotating electrical machine according to the second embodiment of the present invention In addition to the effects described in the first embodiment, it is not necessary to remove the fixing portion 236 after winding the coil, and the man-hours for manufacturing the stator and the amount of material used for the insulator can be suppressed.

  In addition, since the two claw portions 16 of the chuck component 206 are provided at the corners of the end portions of the inner flange 232, the chuck component 206 is fixed to effectively prevent the insulator 203 from being displaced in the circumferential direction.

Embodiment 3 FIG.
Hereinafter, the third embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the second embodiment.
FIG. 11A is a perspective view of the coil winding body 330 attached to the base component 305.
FIG. 11B is a side view of FIG. 11A and shows the positional relationship with the flyer nozzle 7.
The difference between the present embodiment and the second embodiment is only that the shape of the fixing portion 336 of the insulator 303 and the shape of the chuck component 306 are different.
Since the other configuration is the same as that of the second embodiment, only the shape of the fixing portion 336 and the shape of the chuck component 306 will be described in this embodiment.

11A and 11B, the portion enclosed by the broken line in FIG. 11A is compared with the equivalent portion of FIGS. 8A and 8B of the second embodiment. The thickness of the fixing portion 336 provided in the inner collar 332 is set to be equal to or greater than the thickness of the other part of the inner collar 332.
Still, since the fixing portion 336 is provided by being offset (stepped down) on the inner peripheral side (inward in the radial direction), the surface of the chuck component 306 attached to the fixing portion 336 protrudes to the outer peripheral side from the surface of the inner flange 332. There is nothing.

FIG. 12 is a cross-sectional view for explaining how the coil winding body 330 is attached to the base component 305.
The figure (a) is the state before attaching the coil winding body 330 to the base component 305,
FIG. 4B shows a state in which the coil winding body 330 is attached to the base component 305.
FIG. 3C shows a state after the coil winding body 330 is attached to the base component 305.
When the coil winding body 330 is attached to the base part 305, the fixing portion 336 of the insulator 303 interferes with the base part 305.
However, as shown in FIG. 12, each coil winding part 334 of the insulator 303 is given elasticity so that the side not connected to the connection part 335 can be opened. The coil winding body 330 can be attached to the base component 305 by opening in the direction of the arrow b).

FIG. 13 is a cross-sectional view illustrating a process of manufacturing the rotating electrical machine 300 by inserting the rotor 9 inside the coil winding body 330.
FIG. 6A shows a state before the rotor 9 is inserted inside the stator 310,
FIG. 5B shows a state where the rotor 9 is inserted inside the stator 310,
FIG. 3C shows a state after the rotor 9 is inserted inside the stator 310.
When inserting the rotor 9 into the stator 310, as shown in FIG. 13B, the rotor 9 is placed on the inner peripheral side of the stator 310 in the same manner as when the coil winding body 330 is attached to the base component 305. Can be inserted.

According to the insulator for teascore of a rotating electrical machine, the insulator fixing tool for teascore of the rotating electrical machine, the stator of the rotating electrical machine, the rotating electrical machine, and the coil winding method of the rotating electrical machine according to Embodiment 3 of the present invention In addition to the effects described in the second embodiment, the rigidity of the fixing portion 336 of the chuck component 306 and the insulator 303 can be increased by increasing the thickness of the fixing portion 336 of the chuck component 306 and the insulator 303.
Thereby, even when the load applied to the chuck component 306 and the insulator 303 is large when the coil 4 is wound, the coil 4 can be wound without damaging the insulator 303.

  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.

10,310 Stator, 11, 11a-11h, 111 Press-in part,
12 annular yoke core, 121 press-fitting part, 16 claw part, 17 wire, 19 rotating shaft,
20, 25 screws, 3, 203, 303 insulators,
6, 206, 306 chuck parts, 21 rotating shaft,
30, 230, 330, 40 Coil wound body, 31 cylinder,
32, 232, 332 Inner side, 33 Outer side, 34, 334 Coil winding part,
35, 235, 335 connecting part, 36, 236, 336 fixing part,
52,252 chuck parts mounting part, 4 coils, 5,205,305 base parts,
51 connecting part insertion part, 52 chuck part attaching part, 55 fixing plate,
7 Flyer nozzle, 9 rotor, 300 rotating electrical machine.

Claims (16)

A plurality of divided tee scores on which coils are wound are insulators for a tea machine of a rotating electrical machine that are insulated from the coils and arranged annularly at equal intervals in the positional relationship when the stator is configured,
A cylinder covering the entire circumference of the trunk of the divided tea score;
A coil winding part constituted by an inner flange and an outer flange standing from both ends of the cylindrical body;
Each of the inner flanges comprises an annular coupling portion connected to one end portion of the stator in the axial direction,
The insulator is inserted separately from the side having the connecting portion and the insulator inserted into the inner peripheral side of the insulator when the coil is wound around the end of the insulator opposite to the axial direction of the stator. An insulator for a tea-score of a rotating electric machine having a fixing part integrally formed with the inner collar, which is fixed to the insulator fixing tool. The insulator for a tea score of a rotating electrical machine according to claim 1, wherein the fixing portion has a recess. The insulator for a tea machine of a rotating electric machine according to claim 1, wherein the fixing portion is formed by extending the inner collar in the axial direction of the stator. The insulator for teascores of a rotating electrical machine according to claim 2, wherein the recesses are provided at both corners of the end portion of the fixed portion. The said fixing | fixed part is stepped down in the axial direction of the said stator from the outer peripheral surface of the said inner collar, It is for the tea score of the rotary electric machine of any one of Claims 1-4. Insulator. The insulator for a tea machine of a rotating electrical machine according to any one of claims 1 to 5, wherein the fixing portion is formed to have a thickness equal to or greater than a thickness of the inner collar. The insulator for a tea machine of a rotating electrical machine according to claim 1, wherein the fixing portion is formed by connecting edges of the inner flanges of adjacent coil winding portions to each other. The insulator for a tea score of a rotating electric machine according to claim 7, wherein an inner peripheral surface of the fixing portion has an arc shape. The stator of the rotary electric machine provided with the insulator for teascores of the rotary electric machine of any one of Claims 1-8. A rotating electrical machine comprising the stator according to claim 9. Two 1-phase teeth groups each including the insulator for a teascore of a rotating electric machine according to any one of claims 1 to 8, and the coil winding portions belonging to the teeth groups are alternately arranged. A rotating electric machine having a stator that is combined in such a manner. 6. A rotating electrical machine having an insulator for a teascore of a rotating electrical machine according to claim 5, wherein a length between the two fixed portions located symmetrically with respect to the rotational axis of the insulator is outside the rotor. A rotating electrical machine that is smaller than the diameter. An insulator fixture for fixing an insulator for a tea score of a rotating electrical machine according to claim 1,
A disk-like connecting part insertion part having the same outer diameter as the inner diameter of the connecting part, which is inserted from the side where the connecting part is not present in the connecting part of the insulator;
A cylindrical fixture body having the same outer diameter as the inner diameter of the insulator is integrally formed on the same axis, and the coupling portion fixing plate for sandwiching and fixing the coupling portion of the insulator between the end surfaces of the fixture body. An insulator fixing tool for a tea score of a rotating electric machine. The insulator fixing tool for a tea machine of a rotating electric machine according to claim 13, further comprising a chuck component that sandwiches and fixes the fixing portion of the insulator between the fixing tool body. The coil winding method of the rotary electric machine which winds the said coil in order to the said several coil winding part of the said insulator fixed to the insulator fixing tool of Claim 14. The insulator according to claim 7 or 8 is fixed to the insulator fixture according to claim 13, and the coil is wound around the coil winding portions in order, and then the fixing portion is cut. A coil winding method for a rotating electrical machine.

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