JP2002171704A - Salient pole concentrated winding motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a salient pole concentrated winding motor, provided with a stator wherein the work for providing insulation between windings in the phase positions and insulation between the windings and a stator core body is facilitated, insulating materials do not drop of and the reliability of insulation is ensured, and windings can be wound to the flange end portions of bobbins for winding. SOLUTION: The salient pole concentrated winding motor is provided with the stator 10, wherein stator teeth 13 with windings 15 wound thereon through the bobbins 14 are fitted into the stator core body 12. Gaps are formed between the flange end portions of the bobbins 14 and 14 placed on the adjoining stator teeth 13 and 13 and the stator core body 12. T-shaped flange potions, formed by folding insulating paper 19 into a T shape, are inserted into the gaps, and the T-shaped central portions of the insulating paper 19 are inserted between the winding 15 and the winding 15 wound on the adjoining bobbins 14 and 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a salient-pole concentrated winding motor having a stator in which a stator tooth having a winding wound thereon is fitted to a stator core body, and particularly to adjacent windings at inter-phase positions. The present invention relates to a salient-pole concentrated winding motor characterized by an interphase insulation and an insulation structure between a stator core body.

[0002]

2. Description of the Related Art FIG. 1 is a plan view showing a stator structure of a conventional salient-pole concentrated winding motor of this type, and FIG. 2 is a partially enlarged view thereof. As shown in the figure, the stator core 11 is divided into a stator core body 12 and a stator tooth 13, and the rear ends of a plurality of (six in the figure) stator teeth 13 wound with a winding 15 via a bobbin 14 are provided with a stator core. The stator 10 is configured to be fitted into the main body 12. The distal end surface of the stator teeth 13 is formed in an arc shape so as to face the outer peripheral surface of a rotor (not shown) along a predetermined gap.

[0003] In the stator 10 having the above-described structure, the insulating structure at the inter-phase position is, as shown in Figs. 1 and 3, after winding the winding 15 and covering the entire surface of the winding 15 with the insulating tape 17. When the windings 15 of each phase are close to each other between the phases, the insulating paper 16 has been inserted in that portion. FIG. 4 is a perspective view showing only insulating paper. In addition, as shown in FIG. 2, the insulation between the stator core body 12 and the winding 15 is provided with a space between the flange ends of the bobbin 14 to secure an insulation distance t between the winding 15 and the stator core.

[0004] The insulating structure at the inter-phase position of the stator having the above configuration has the following problems. After winding the winding 15 around the stator teeth 13, it is troublesome to wind the insulating tape 17, and it is difficult to shorten the working time.

In a structure in which the insulating paper 16 is simply inserted into a portion where the phases are close to each other, there is a possibility that the insulating paper 16 is not securely fixed and may be displaced or fall off. Also,
If this is adhered, there is a problem that member cost and work time are required.

In order to secure an insulation distance between the winding 15 and the stator core main body 12, the winding 15 cannot be wound up to the flange end of the bobbin 14 for winding.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and eliminates the above problems (1) to (4) to provide insulation between windings at interphase positions and insulation between windings and a stator core body. A salient pole concentrated winding motor having a stator that is easy to take, has a reliable insulation without the insulating material falling off, and can wind the winding up to the flange end of the winding bobbin. The purpose is to provide.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is a projection provided with a stator having a configuration in which a stator tooth having a winding wound around a stator core body via a bobbin is fitted. In a pole concentrated winding motor, a gap is provided between a flange end of a bobbin provided on an adjacent stator tooth and a stator core body, and T
A T-shaped central portion of the insulating material is inserted between the windings wound on adjacent bobbins while simultaneously sandwiching the T-shaped flange portion of the insulating material formed in the shape of a letter. And

As described above, a gap is provided between the flange end portion of the adjacent bobbin and the stator core body, and the T-shaped flange portion of the insulating material is sandwiched in the gap, and at the same time, the winding wound around the adjacent bobbin. Since the T-shaped central portion of the insulating material was inserted between the wire and the winding, the insulation was formed in a T-shape to provide insulation between the windings at the interphase position and insulation between the windings and the stator core body. It is only necessary to insert the T-shaped flange end portion of the insulating material into the gap provided between the flange portion of the bobbin and the stator core main body, and the operation becomes extremely easy. In addition, the insulation reliability is improved without the insulating material falling off. Furthermore, since a gap is provided between the flange end of the bobbin and the stator core body, and a T-shaped flange of insulating material is sandwiched in the gap, the winding is wound up to the flange end of the winding bobbin. Can be.

According to a second aspect of the present invention, in the salient pole concentrated winding motor according to the first aspect, the insulating material is formed by bending an insulating paper into a T shape.

According to a third aspect of the present invention, in the salient pole concentrated winding motor according to the first aspect, the insulating material is formed in a T shape by using an insulating resin material.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 is a plan view showing the stator structure of the salient-pole concentrated winding motor according to the present invention, and FIG. 6 is a partially enlarged view thereof. 1 and 2, the stator core 11 is divided into a stator core body 12 and a stator tooth 13, and a plurality of (six in FIG. 1) stator teeth 1 around which a winding 15 is wound via a bobbin 14.
The rear end 3 is fitted into the stator core body 12 to form the stator 10.

That is, the central portion of the stator core body 12 is polygonal (in the figure, hexagonal and strictly 12
(A square hole) is formed, and a fitting groove 12a is formed in the center of each side surface of the hole.
The rear end portion 13a of the stator teeth 13 formed in the same shape in 2a is press-fitted by a press or the like, and the stator core body 12 and the stator teeth 13 on which a plurality of (six in the figure) windings 15 are wound are integrated. Assembled. The distal end surface of the stator teeth 13 is formed in an arc shape so as to face the outer peripheral surface of a rotor (not shown) along a predetermined gap.

In the above-described stator structure of the salient-pole concentrated winding motor, each winding 15 has adjacent stator teeth 13 arranged in another phase, that is, U-phase, V-phase, and W-phase windings 15 as shown in FIG. Have been. Therefore, it is necessary to provide insulation between the windings 15 at adjacent positions between the phases and insulation between the windings 15 and the stator core 12.

As shown in FIG. 6, the outer end of the bobbin located on the outer side is cut obliquely to form the insulation, and a gap 18 is formed between the cut surface and the inner surface of the stator core body 12.
Is provided. Here, the width d of the gap 18 is set to d = 0.
5 is set. As shown in FIG.
A T-shaped flange portion of insulating paper (heat-resistant polyaramid paper having a thickness of 0.25) 19 formed by bending into a letter shape is inserted and sandwiched, and at the same time, insulating paper is provided between adjacent windings 15. Insert the 19 T-shaped central part. Insulating paper 19 is gap 1
Folded portions 19a, 19a are formed at the ends inserted into the fitting 8, and the fitting is adjusted to a tight fit.

FIGS. 8 and 9 are views showing insulating paper 19 formed in a T-shape by changing the method of folding the insulating paper. The insulating paper 19 of FIG. 8 bends a portion corresponding to both ends of a T-shaped flange portion 19b inserted into the gap 18, furthermore, bends both sides at a central portion of the flange portion 19b, and forms two T-shaped central portions 19c. 19c is formed. 9 is a T-shaped flange 19b inserted into the gap 18.
And the center portion 1 of the flange portion 19b.
This is a configuration in which one T-shaped central portion 19c is formed by bending at 9d. The same effect as described above can be obtained by configuring the insulating paper 19 as shown in FIGS.

FIG. 10 is a partially enlarged plan view of the stator structure of the salient-pole concentrated winding motor according to the present invention. Here, a resin material such as PPS (polyphenylene sulfide) is used as an insulating material to be inserted and sandwiched in the gap 18, and a T-shaped insulating resin material 20 is used as shown in FIG. The T-shaped flange portion 20a of the insulating resin material 20 is inserted into the gap 18, and at the same time, the T-shaped central portion of the insulating resin material 20 is inserted between the adjacent windings 15. The dimensions of the gap 18 and the insulating resin material 20 are determined in consideration of the fitting of the insulating resin material 20.

[0018]

As described above, according to the invention described in each claim, a gap is provided between the flange end of the adjacent bobbin and the stator core body, and a T-shaped flange of insulating material is provided in the gap. Since the T-shaped central part of the insulating material was inserted between the windings wound on the adjacent bobbins at the same time as sandwiching the part,
The following excellent effects can be obtained.

In order to obtain insulation between the windings at the interphase position and insulation between the windings and the stator core body, the operation of previously winding an insulating tape or the like on the windings can be omitted, and a T-shape is formed. It is only necessary to insert the T-shaped flange portion of the insulating material into the gap provided between the flange portion of the bobbin and the stator core body, and the operation becomes extremely easy.

The T-shaped central portion of the insulating material inserted into the gap between the flange end portion of the bobbin and the stator core body is inserted into the gap between the flange end portion of the bobbin and the stator core. In addition, the reliability of insulation is improved without the insulating material falling off as in the conventional case.

Since a gap is provided between the flange end portion of the adjacent bobbin and the stator core body, and a T-shaped flange portion made of an insulating material is interposed in the gap, the winding is performed up to the flange end portion of the winding bobbin. Can be wound.

[Brief description of the drawings]

FIG. 1 is a plan view showing a stator structure of a conventional salient-pole concentrated winding motor.

FIG. 2 is a partially enlarged view of FIG. 2;

FIG. 3 is a perspective view showing an example of an insulating structure of a stator winding portion of a conventional salient-pole concentrated winding motor.

FIG. 4 is a perspective view showing insulating paper used for an insulating structure of a stator winding portion of a conventional salient-pole concentrated winding motor.

FIG. 5 is a plan view showing a stator structure of the salient-pole concentrated winding motor according to the present invention.

FIG. 6 is a partially enlarged view of FIG. 5;

FIG. 7 is a perspective view showing a configuration of an insulating material used in the salient pole concentrated winding motor according to the present invention.

FIG. 8 is a perspective view showing a configuration of an insulating material used in the salient pole concentrated winding motor according to the present invention.

FIG. 9 is a perspective view showing a configuration of an insulating material used in the salient-pole concentrated winding motor according to the present invention.

FIG. 10 is a partially enlarged plan view showing a stator structure of the salient-pole concentrated winding motor according to the present invention.

FIG. 11 is a perspective view showing a configuration of an insulating resin material used for the salient-pole concentrated winding motor according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Stator 11 Stator core 12 Stator core main body 13 Stator teeth 14 Bobbin 15 Winding 16 Insulating paper 17 Insulating tape 18 Gap 19 Insulating paper 20 Insulating resin material

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kozo Matake 11-1 Haneda Asahimachi, Ota-ku, Tokyo F-term in Ebara Densan Co., Ltd. CB25 CC11 CD01 CD21 CE01 FA04 5H604 AA08 BB01 BB08 BB14 CC01 CC05 CC16 DB15 PB02 PB03 5H615 AA01 BB01 BB05 BB14 PP06 PP13 PP16 QQ02 QQ19 RR04

Claims (3)

[Claims] 1. A salient-pole concentrated winding electric motor comprising a stator having a configuration in which a stator tooth having windings wound around a stator core body via a bobbin is fitted to a stator core body, wherein the stator teeth are provided on adjacent stator teeth. A gap is provided between the flange end of the bobbin and the stator core main body, and a T-shaped flange portion of an insulating material formed in a T-shape is sandwiched in the gap, and a winding wound around the adjacent bobbin at the same time. A salient pole concentrated winding motor, wherein a T-shaped central portion of the insulating material is inserted between windings. 2. The salient-pole concentrated winding motor according to claim 1, wherein the insulating material is formed by bending insulating paper to form a T-shape. 3. The salient-pole concentrated winding motor according to claim 1, wherein the insulating material is formed in a T shape with an insulating resin material.