JP3277008B2 - Winding device for small rotating electric machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small rotating electric machine having auxiliary poles extending in the axial direction toward the inner diameter side of a yoke, and magnetic poles formed in a Ψ shape between the auxiliary poles. The present invention relates to a winding device for a small rotating electric machine that performs a wire.

[0002]

2. Description of the Related Art A small rotating electric machine detects a position of a rotor constituted by a permanent magnet by a Hall element or the like and sequentially energizes a UVW phase winding of a stator core. There is a so-called brushless motor configured, and an induction motor having a basket-shaped rotor with an alternating current power supply. For such a type of small rotating electric machine, various structures and winding methods of a stator core have been proposed.

[0003] In a brushless motor having good control characteristics, as a very common configuration, T is attached to the inner diameter side of a donut-shaped yoke.
There is a type in which a U-shaped winding is wound by extending a U-shaped magnetic pole. In this case, the winding of the winding is performed by using a yoke portion with respect to a yoke portion formed in a donut shape on the outer periphery. Since the magnetic poles are extended in a T-shape uniformly on the inner circumference of the winding, if windings are sequentially wound around the magnetic poles, all the windings are cut as necessary to form a UVW phase winding. An end may be formed.

However, in the case of a stator of an induction motor as shown in FIG.
When the first winding A is wound around the support portion 4 of the magnetic pole 3 and the second winding B is wound between the arms 5 of the adjacent magnetic pole 3 in the shape of a letter. However, there is a problem that the length of the nozzle 6 of the winding machine for winding the winding must be changed in the radial direction. In addition, there is a problem that the second winding B cannot be wound unless the first winding A is wound first.

In order to continuously wind the first winding A and the second winding B without cutting them when constructing such a brushless motor, for example, the nozzle is indicated by a dotted line in the middle of the winding. The length in the radial direction must be changed as in the nozzle 7 shown.

The present invention has been made in view of such circumstances, and it is easy to wind the windings of a small rotating electric machine having different winding positions in the radial direction, such as a magnetic pole formed in a Ψ shape. It is an object of the present invention to provide a winding device for a small rotating electric machine that can be performed in a small size.

[0007]

According to the present invention, a plurality of auxiliary poles extending in the axial direction are provided on the inner diameter side of a donut-shaped yoke portion, and a Ψ-shaped joint is formed between the auxiliary poles. The magnetic pole consisting of the iron-side support and the arm formed on the inner diameter side extends in the axial direction.
A winding device for a small rotating electric machine that winds a winding around a plurality of stator core supporting portions and arm portions provided with a rotating shaft that rotates and reciprocates at an axial center point of the stator core. A rotary shaft provided with a nozzle that moves radially forward and backward , and a winding that is pulled out from the tip , a rotary shaft provided with a cam for operating the radial movement, and the cam is connected to the nozzle. The operation of the cam allows the nozzle to advance and retreat in the radial direction, extends the nozzle in the first step, winds a winding around the support portion of each magnetic pole, and retracts the nozzle in the second step to retract the magnetic pole. One arm and the supplementary pole
A winding device for a small rotating electric machine capable of winding a winding between the magnetic pole and the other arm of a magnetic pole adjacent to the magnetic pole.
You.

[0008]

The nozzle can be advanced and retracted in the radial direction by the cam, the nozzle is advanced in the radial direction, and the winding is wound around the support portion located on the yoke side, and the nozzle is axially mounted without cutting the winding. The winding can be wound around the arm portion that is retracted in the direction and located on the axial center side. In this way, the winding can be continuously wound without cutting the windings on the magnetic poles of the small rotating electric machine having different winding positions in the radial direction and without removing the stator core from the winding device. it can.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in the drawings. FIG. 1 is a plan view of a main part showing the shape of a stator core and the arrangement of nozzles for winding windings. FIG.
FIG. 2 is a plan view of a main part showing an arrangement of windings and a method therefor. FIG. 3 is a plan view of a main part for describing a step of winding a winding. FIG. 4 is a plan view of a main part for describing a step of winding a winding. FIG. 5 is a plan view of a stator core on which windings are wound. FIG. 6 is a plan view of a stator core showing an example of a structure for protecting a winding. FIG. 7 is a longitudinal sectional view showing a main part of the stator core. FIG.
FIG. 8 is a longitudinal sectional view of a main part showing a structure of a stator core at a position different from the position shown in FIG. 7. FIG. 9 is a longitudinal sectional view of a main part showing a winding method by an example of a winding device for winding a winding around a stator core of a small rotating electric machine of the present invention. FIG.
FIG. 2 is a longitudinal sectional view of a main part showing a structure of a nozzle of a winding device. FIG. 11 is a cross-sectional view of a main part showing an example of a structure for moving the nozzle in the radial direction.

FIG. 1 shows an embodiment in which a small rotating electric machine is a brushless motor, and an auxiliary pole 9 formed in a conical shape and standing upright on the inner diameter side of a donut-shaped yoke portion 8 is provided.
補 -shaped magnetic poles 10 are provided between the three auxiliary poles 9. The magnetic pole 10 is configured such that the supporting portion 11 continuing to the yoke portion 8 is erected toward the axis similarly to the auxiliary pole 9, and the arm is attached to the supporting portion 11. The parts 12a and 12b are provided so as to be bent in a hook shape in the circumferential direction.

Further, the inner diameter side of the support portion 11 and the arm portion 12
Working portions 13a, 13b, 13c facing the rotor (not shown) are formed on the inner diameter sides of the stator cores 14a, 12b, respectively, so that the inner diameter sides are arc-shaped.
Is configured.

At the axial center point 15 of the stator core 14, there is an operation center point of a nozzle 16 for winding a winding, and the nozzle 16
Are inserted into the gap between the auxiliary pole 9 and the magnetic pole 10 so as to reciprocate in the axial direction of the stator core 14 and move in the circumferential direction. The line 17 indicated by the arrow in the figure is the nozzle 1
6 shows a locus in the circumferential direction of No. 6, and shows a position where the winding is wound.

In FIG. 2, the yoke portion 8 of the stator core 14 is shown.
A state is shown in which a winding is wound around each of the magnetic poles 10 provided on the supporting portion 9, and the winding is located on the opposite side without cutting the first winding 18a wound on the support portion 9. A second winding 18b is wound between the arms 12a and 12b so as to interpose the auxiliary pole 9. And the U-phase winding 21a
Is formed. Similarly, windings 19a and 19b are wound and V-phase winding 21b and windings 20a and 20b are wound to form a W-phase winding 21c. Accordingly, six winding ends are drawn out for three phases of U, V, and W phases.

In FIG. 3, the winding is wound by a winding device 2
2, three nozzles 16 are attached, and a winding 23
a, 23b, and 23c are drawn out, respectively, and are shown as being wound around the support portion 9. In this case, the nozzle 16 is configured to operate simultaneously in the axial direction and the circumferential direction of the stator core 14 by the winding device 22,
The winding is wound around the three support portions 9 at the same time.

In FIG. 4, windings 18a, 1
8a and 18c are wound respectively, and the winding 19
The state where a, 19b, and 19c are wound is shown.
The nozzle 16 has an axially shorter dimension than the state shown in FIG.

FIG. 5 shows a state in which the windings 18a, 18a, 18c and the windings 19a, 19b, 19c are wound, and the ends 21a, 21b, 21c and 24 of the windings are shown.
a, 24b and 24c are respectively drawn out.

The winding ends 21a, 21b, 21c and 24a, 24b, 24c are configured to be converged and wired by a printed board (not shown). When the printed circuit board is disposed in parallel with the stator core 14, the winding ends 21a, 21b, 21
c and 24a, 24b, 24c can be connected and converged,
In addition, a lead wire connected to a power supply wire or the like can be easily taken out. Also, it is convenient for attaching and wiring small components such as a Hall element.

In FIG. 6, the stator core 14 is
The operating portions 12b and 12c of the arm portions 12b and 12c and the operating portion 12a of the auxiliary pole 9 have windings 18a and 18b, respectively.
Resin stoppers 25a, 25b, and 25c so that they do not come into contact with the rotor (not shown)
Are formed.

In FIG. 7, the stator core 14 has an insulating layer 26 formed of an insulating material such as a resin on the outer periphery thereof, and stoppers 25a and 25 are integrally formed with the insulating layer 26.
b, 25c are formed.

In FIG. 8, the stator core 14 is formed by laminating steel plates in the axial direction such that the yoke portion 8, the arm portion 12b, and the action portion 13c are parallel to each other. The stopper 25c and the insulating layer 26 are provided so as to integrally cover the outer periphery thereof.

In FIG. 9, a winding device 22 has a stator core 14 mounted on a turntable 27 and a stator core 14.
A rotation shaft 28 passes through the axis of the rotation shaft 28, and a cam 28a is attached to the top of the rotation shaft 28. The three nozzles 16 are provided so as to extend from the rotary shaft 28, and the windings 23a, 23b, and 23c are drawn out and wound around the stator core 14 with the windings 19b and 20b. I have.

The rotating shaft 2 is configured to reciprocate in a circumferential direction by a rotating motor 29 provided at a lower portion of the winding device 22, and further to reciprocate in an axial direction at a lower portion. A cam 30 and a motor 31 for driving the cam 30 are provided.

The cam 30 is configured to reciprocate the rotating shaft 28 in the axial direction by fitting the groove 32 and the pin 33 with respect to the rotating shaft 28.
The rotation shaft 28 is configured such that a winding can be wound around a predetermined portion of the stator core 14 with the nozzle 16. Further, the turntable 27 is configured to rotate the stator core 14 by a predetermined angle according to a predetermined process.
And the windings are sequentially wound. FIG.
0, each of the three nozzles 16 has a winding 23
a, 23b, and 23c are drawn out, and the pin 35 is fitted in the cam groove 36 of the cam 28a at the rear end of the nozzle 16 and moves in the axial direction by rotating the cam 28a. It is configured to be able to. And
A hollow shaft 37 is provided inside the rotation shaft 28 so as to be able to rotate the cam 28a, and is configured to be operated when the nozzle 16 is moved by a lower driving device (not shown). ing. The rotation operation of the cam 28a can be operated from above by a shaft (not shown), and may be operated via the inside of the rotation shaft 28. Of course, when the winding position is changed, the rotation of the rotation shaft 28 is stopped. In this case, the cam 28a may be manually rotated and fixed at that time. Since the cam 28a is provided on the top of the rotating shaft 28, the operation can be easily performed. Further, it is preferable that the cam 28a is locked by a pin or the like so that the cam 28a is not unnecessarily rotated by vibration or the like while the rotation shaft 278 is rotating. These techniques can be easily performed according to the conventional operation of such a winding device.

In FIG. 11, the cam groove 36 is
The nozzle 16 is formed in a spiral shape so that when the a rotates, the nozzle 16 is forcibly moved in the axial direction by the pin 35.

In such a configuration, in the brushless motor, the stator core 14 is formed by stamping and laminating a steel plate with a press, and the winding is wound by the winding device 22. The auxiliary pole 9 extending to the yoke portion 8 at this time is formed in a conical shape, and its side surface and the arm portions 12a, 12b of the magnetic pole 10 are formed.
And the extension of the gap formed by the stator core 14
, The nozzle 16 attached to the rotating shaft 28 can be configured to advance and retreat from the axial point 15, and the winding device 22 can be easily manufactured.

That is, the turntable 27 and the rotating shaft 28 of the winding device 22 can be made to have the same axis, so that not only the processing is easy, but also high precision can be easily obtained. For this reason, it is convenient to obtain a high accuracy in moving the nozzle 16 at a high speed in a small gap. Therefore, even if the nozzle 16 cannot make a circular motion, the rotation can be easily performed at 1,000 revolutions / minute, and the winding speed can be increased.

Further, by forming the auxiliary pole 9 in a conical shape, the magnetic resistance of the auxiliary pole 9 is somewhat reduced, and the magnetic resistance that increases as the distance from the support portion 11 increases can be reduced. . Needless to say, the auxiliary pole 9 may have a constant width other than being formed in a conical shape.
The same operation and effect can be obtained if the extended line of the gap formed between the zero arm portions 12a and 12b and the field is located at the axial center point 15 of the stator core 14. The winding of the winding around the arm portions 12a and 12b of the magnetic pole 10 does not pose a structural problem since the nozzle 16 is inserted only slightly in the radial direction.

Since the cam 28a performing such an operation can simultaneously extend a plurality of nozzles 16 toward the stator core 14 from the rotating shaft 28, the three nozzles 16 as in this embodiment are used. Can be simultaneously operated to wind a plurality of windings at once. Then, the nozzle 16 and the cam 2
When the cam groove 36 is set at an arbitrary position in the radial direction in the circumferential direction other than forming the cam groove 36 in a spiral shape as in the present embodiment, the rotation angle of the cam 28a is changed. And the positions of the nozzles 16 can be arbitrarily set, and the plurality of nozzles 16 can be respectively arbitrarily operated in the radial direction.

Further, in this embodiment, the stator core of the brushless motor has been described. However, it is needless to say that the winding device for a small rotating electric machine according to the present invention can be used for an induction motor, and the operation and effect can be improved. Is the same.

[0030]

According to the present invention, it is possible to perform winding of a small rotating electric machine in which windings are wound at different positions in the radial direction, for example, a Ψ-shaped magnetic pole is provided on the inner diameter side of the yoke portion. It is intended to obtain a winding device for a small rotating electric machine that can easily move a nozzle in a radial direction by operating a cam to a different winding position in a radial direction, and can easily operate a nozzle even when operating a plurality of nozzles at once. Can be moved in the radial direction, and the effect is extremely large when the winding is wound around a stator core having a complicated structure, and is extremely valuable when the winding is automated.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part showing the shape of a stator core and the arrangement of nozzles around which windings are wound.

FIG. 2 is a plan view of a main part showing an arrangement of windings and a method thereof.

FIG. 3 is a plan view of a main part for describing a step of winding a winding.

FIG. 4 is a plan view of a main part for describing a step of winding a winding.

FIG. 5 is a plan view of a stator core on which windings are wound.

FIG. 6 is a plan view of a stator core showing an example of a structure for protecting a winding.

FIG. 7 is a longitudinal sectional view showing a main part of a stator core.

FIG. 8 is a longitudinal sectional view of a main part showing a structure of a stator core at a position different from the position shown in FIG. 7;

FIG. 9 is a longitudinal sectional view of a main part showing a winding method by an example of a winding device for winding a winding around a stator core of a small rotating electric machine of the present invention.

FIG. 10 is a longitudinal sectional view of a main part showing a structure of a nozzle of the winding device.

FIG. 11 is a cross-sectional view of a main part showing an example of a structure for moving a nozzle in a radial direction.

FIG. 12 is a plan view of a main part showing the structure of a conventional stator core.

[Explanation of symbols]

 8 yoke section 9 auxiliary pole 10 magnetic pole 11 support section 12a, 12b arm section 14 stator core 16 nozzle 22 winding device 28 rotating shaft 28a ……cam

Claims (1)

(57) [Claims] 1. A donut-shaped yoke having a plurality of auxiliary poles extending in the axial direction on the inner diameter side of the yoke part, a Ψ-shaped support between the auxiliary poles and a support part on the yoke side and an inner diameter side. A winding device for a small rotating electric machine, comprising a plurality of stator core support portions and a plurality of armatures each having a magnetic pole extending in the axial direction, the winding portion being wound around the arm portions. A rotary shaft that rotates and reciprocates at an axial center point of the rotary shaft. The rotary shaft includes a nozzle that advances and retreats in a radial direction and draws a winding from a tip. The cam is connected to the nozzle, and the cam is operated to allow the nozzle to advance and retreat in the radial direction. In the first step, the nozzle is extended and the winding is wound around the support portion of each magnetic pole. In the second step, the nozzle is retracted and one arm of the magnetic pole is
With the other arm of the magnetic pole adjacent to the magnetic pole with the complementary pole in between
A winding device for a small rotating electric machine in which windings can be wound between them .