JP2573713Y2 - Motor stator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator for an electric motor which is divided into an outer ring yoke portion iron core and an inner ring magnetic pole portion.

[0002]

2. Description of the Related Art In recent years, there has been a demand for an inexpensive motor used for driving a fan of home electric appliances.

[0003] In view of the above, the stator of a conventional electric motor generally has a configuration as shown in FIGS. That is, the iron plate 104 having the teeth 103 forming the plurality of openings 101 and the slots 102 is stacked, and the outer periphery of the teeth 103 is covered with the insulating member 105 so that the tooth iron core 106 is integrally formed. Main winding 1 according to the number of motor poles
07 and the auxiliary winding 108 are wound in series. Also,
At both ends of the coil end side of the main winding 107 and the auxiliary winding 108 of the insulating member 105 of the tooth core 106,
An R section 109 is provided. On the other hand, an annular yoke iron core (not shown) is press-fitted to the outer periphery of the tooth iron core 106. The main winding 107 and the auxiliary winding 108
Was carried out as follows.

[0004] First, a main winding 107 is wound in series from the opening 101 of the tooth core 106, and then an auxiliary winding 108 is wound in series. 1
08 can be smoothly wound along the R portion 109 provided at each corner of the insulating member 105 without being sharply bent and damaged or disconnected. The diameters of the 107 and the auxiliary winding 108 are made as small as possible to reduce the manufacturing cost of the stator of the electric motor.

[0005]

[Problems to be Solved by the Invention] By the way, it is well known that when the output of a motor is changed in accordance with the diversification of a product body, it is well-known that the output is changed by changing the thickness of an iron core of the motor. The method is fixed side 110A and movable side 110B
One molding die 110 (shown in FIG.
Generally, the movable side 110B (shown by a dashed line) is provided with a slide-type thickness-corresponding portion 111 corresponding to various thickness dimensions of the toothed iron core to reduce the die cost. However, in the conventional motor stator in which the outer peripheral portion of the tooth portion 103 is covered with the insulating member 105, the R corresponding to the R
The portion 109 must be provided, and the portion has insufficient strength due to the mold structure, and mass production becomes impossible. Accordingly, in order to cope with various thicknesses of the toothed iron core 106, one of the fixed side and the movable side of the molding die including the fixed side and the movable side is adapted to various thicknesses. Since the required number of molded products must be prepared and produced while switching the mold, the cost of the mold increases, and the time required for switching the mold also increases, which increases the manufacturing cost. There was a problem to do.

The present invention solves the above-mentioned problem, and when winding a winding around a tooth portion, the winding diameter is reduced as much as possible without being sharply bent and damaged or disconnected. In order to reduce the manufacturing cost by changing the stacking dimension of the stator of the motor and to change the output of the motor, one molding die can be used to reduce the manufacturing cost. It is intended to provide children.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to stack an iron plate having a plurality of teeth on which a winding conductor corresponding to the number of poles of an electric motor is wound, and A toothed iron core integrally formed by covering the outer peripheral portion with an insulating member, a first winding wound around the toothed iron core from the outer peripheral side, and after the first winding is wound. A second winding wound around the outer periphery side at a position separated by an electrical angle of 90 ° and a yoke iron core that is fitted to the outer circumference of the toothed iron core to form a magnetic path. An R portion is formed at both corners of one end of both ends of the first and second windings of the insulating member on the coil end side, and a convex portion is formed at the center of the other end. This is the configuration of the stator of the electric motor.

[0008]

According to the present invention, the first winding is wound around the teeth of the iron core in the above-described configuration, and then the second winding is wound around the teeth. The first and second windings are sharply bent along the R portion at one end of the insulating member and on an inclined line connecting both corners of the other end and the tip of the projection. Molded metal that consists of a fixed side and a movable side to change the output of the motor by changing the thickness of the stator of the motor and smoothly winding it without being damaged or broken. By simply providing a concave portion at the center of the slide-type thickened portion corresponding to the movable side of the mold, a convex portion of the insulating member can be formed, ensuring the mold strength of this portion, and using a single molding die. It is possible to cope with various thickness dimensions of the tooth core.

[0009]

1 to 5 show an embodiment of the present invention.
This will be described with reference to FIG.

[0010] As shown in the figure, a plurality of elongated substantially rectangular iron plates are laminated to form a tooth portion 2, and these tooth portions 2 are arranged in an annular shape at predetermined intervals at 24 locations. The outer peripheral portion is covered with an insulating member 2A and integrally molded to form the toothed iron core 1. The toothed iron core 1 has a rotor (not shown) inside.
And a slot 4 opened on the outer peripheral side between each tooth portion 2. The auxiliary winding 5 as the first winding and the main winding 6 as the second winding are inserted into the slot 4 from the opening 11 and are directly wound around the tooth portion 2. A cylindrical rising portion 7 for positioning the inner peripheral portions of the coil ends of the auxiliary winding 5 and the main winding 6 in the inner peripheral side direction of the toothed iron core 1 is formed by aligning the inner peripheral surfaces of the rising portions 7 with the holes 3. And a rising rib 8 for positioning the outer peripheral portion of the coil end of the main winding 6 toward the outer peripheral side of the tooth core 1. The rising portion 7 and the rising rib 8 are integrated with the insulating member 2A. Has formed. In addition, an R portion 13 is formed at one corner of both ends on the coil end side of the auxiliary winding 5 and the main winding 6 of the insulating member 2A, and at the center of the other end, The projection 14 is formed. Further, on the tooth portion 2 located at the center of the auxiliary winding 5, a spacer 9 formed such that the front end is located slightly inside the center portion of the tooth portion 2 is integrally formed with the insulating member 2A. I have. The insulating member 2
A, the rising portions 7, the rising ribs 8, and the spacers 9 are all made of an insulating material. On the other hand, a yoke iron core 10 forming a magnetic path is fitted and mounted on the outer peripheral portion of the tooth iron core 1.

The operation of winding the auxiliary winding 5 and the main winding 6 in the stator having the above configuration will be described below.

First, the auxiliary winding 5 is inserted into the slot 4 from the opening 11 and wound around the tooth portion 2 by a straight winding. At this time, since the outer peripheral portion of the coil end of the auxiliary winding 5 is positioned slightly inside the central portion of the tooth portion 2 by the front end portion of the spacer 9, the auxiliary winding 5 is It is wound while being pressed to the side. Subsequently, since the auxiliary winding 5 is pressed and wound to the inner peripheral side as described above, the main winding 6 is wound considerably into the slot 4, and the outer peripheral portion of the coil end stands up. Since it is positioned in the outer peripheral side direction by the raising rib 8, it is wound while being pressed against the inner peripheral side of the tooth core 1. Therefore, the main windings 6 are formed in the order of the opening
It can be wound up to the vicinity. At this time, the auxiliary winding 5
The main winding 6 extends along the R portion 13 at one end of both ends of the insulating member 2A, and along an inclined line 15 connecting both corners of the other end and the tip of the projection 14, It is smoothly wound without being sharply bent and being damaged or broken.

A method of molding the tooth core 1 when the output of the motor is changed by changing the thickness of the tooth core 1 in the stator of the motor configured as described above will be described below. I do.

A molding die 23 for molding the insulating member 2A on the outer periphery of the toothed iron core 2 (in FIG. 7, the outline is shown by a two-dot chain line).
Is a fixed side 20 forming R portions 13 at both corners of one end of the insulating member 2A, and a projection 1 at the center of the other end.
4 and a movable side 2 provided with a sliding-type thickness-corresponding portion 21 corresponding to various thickness dimensions of the tooth core 1.
And 2. The thickness-corresponding portion 21 can be adjusted so as to correspond to various thickness dimensions of the tooth core 1. Further, the stacked thickness corresponding portion 21 has a simple shape in which a concave portion forming the convex portion 14 of the insulating member 2 </ b> A is provided at the center of the front end thereof. It is possible to cope with mass production without lowering the strength of the material.

As described above, according to the stator of the electric motor of the embodiment of the present invention, when the auxiliary winding 5 and the main winding 6 are wound around the teeth 2, they are sharply bent to damage or break. It is possible to smoothly wind the wire without any trouble, and it is possible to change the thickness of the toothed iron core 1 to change the output of the electric motor with one molding die 23.

[0016]

As is apparent from the above description of the embodiment, according to the present invention, when winding the winding around the tooth portion, the winding is prevented from being sharply bent and damaged or disconnected. In addition to reducing the wire diameter of the winding as much as possible and reducing the manufacturing cost, changing the stacking dimension of the stator of this motor and changing the output of the motor can be done with one molding die. It is possible to provide an electric motor stator that can reduce manufacturing costs.

[Brief description of the drawings]

FIG. 1 is a plan view of a tooth core of a motor stator according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along the line BO in FIG. 1;

FIG. 3 is a sectional view taken along the line AO in FIG. 1;

FIG. 4 is a sectional view taken along line C-C 'of FIG.

FIG. 5 is a plan view of the stator.

FIG. 6 is a plan view of a tooth core of a stator of a conventional motor.

FIG. 7 is a sectional view taken along line D-D 'of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tooth part iron core 2 Tooth part 2A Insulating member 5 Auxiliary winding 6 Main winding 14 Convex part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02K 1/04-1/20 H02K 3/30-3/44 H02K 15/02-15/12

Claims (1)

(57) [Scope of request for utility model registration] 1. A toothed iron formed by laminating an iron plate having a plurality of teeth on which a winding conductor according to the number of poles of an electric motor is wound, and covering an outer peripheral portion of the teeth with an insulating member. A core, a first winding wound around the toothed iron core from the outer periphery side, and after the first winding winding, a series winding from the outer periphery to a position separated by an electrical angle of 90 ° from the first winding. A second winding to be mounted, and a yoke iron core fitted to an outer peripheral portion of the toothed iron core to form a magnetic path, wherein coils of the first and second windings of the insulating member are provided. A stator for an electric motor in which R portions are formed at both corners of one end of both end portions on the end side, and a convex portion is formed at a center portion of the other end.