CN216390617U

CN216390617U - Motor stator

Info

Publication number: CN216390617U
Application number: CN202122702501.2U
Authority: CN
Inventors: 杨妙玲
Original assignee: Dongguan Dema Electronics Co ltd
Current assignee: Guangdong Dema Electronics Co ltd
Priority date: 2021-11-06
Filing date: 2021-11-06
Publication date: 2022-04-26
Anticipated expiration: 2031-11-06

Abstract

The utility model relates to a motor stator, comprising: the iron core comprises a plurality of iron core single bodies and isolating teeth which are detachably arranged in the middle of each iron core single body; the iron core single body comprises an iron core single body yoke part and protruding parts connected to two opposite ends of the iron core single body yoke part; the yoke part of the iron core monomer is positioned on the circumference of the iron core; the protruding parts of two adjacent iron core monomers are matched to form winding teeth; the winding teeth and the isolation teeth are alternately arranged; an insulating support for wrapping the iron core; the insulating bracket is formed by injection molding; the plurality of windings are uniformly arranged on the iron core at intervals; the windings correspond to the winding teeth one to one. Above-mentioned motor stator, simple structure, convenient to use utilizes a plurality of iron core monomers of parcel of moulding plastics, can pull down the isolation tooth at wire-wound in-process, increases wire winding space to on the winding finishes, will keep apart the tooth and install back the iron core monomer again, can effectively improve the packaging efficiency of iron core, improve wire winding efficiency, reduce assemble duration, be convenient for improve production efficiency.

Description

Motor stator

Technical Field

The utility model relates to the technical field of motor stators, in particular to a motor stator.

Background

The traditional annular laminated stator core is formed by die sinking and stamping a whole iron material, and the die is complex in structure and high in cost. The blank waste is serious in the production process of the annular lamination structure, and the material utilization rate is low. Therefore, a new manufacturing mode appears in the market, a plurality of fan-shaped stators are formed in a progressive stamping, blanking and laminating riveting mode, the fan-shaped stators are mutually riveted into an integral stator core, and compared with a stator core formed by sheet die sinking and stamping, the stator core formed by combining the fan-shaped stators has the absolute advantages of low cost and good quality. However, the sector stator needs riveting or welding assembly, which consumes assembly time and is related to production efficiency, the riveting or welding quality will affect the performance of the stator core, and the spacing between the winding teeth of the stator is too small, which is not beneficial to winding.

SUMMERY OF THE UTILITY MODEL

Based on the motor stator, the motor stator is simple in structure and convenient to use, the assembly efficiency of the iron core can be effectively improved, the winding efficiency is improved, the assembly time is shortened, and the production efficiency is convenient to improve.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

an electric machine stator comprising:

the iron core comprises a plurality of iron core single bodies arranged in a circumferential array and isolating teeth detachably arranged in the middle of each iron core single body; the iron core single body comprises an iron core single body yoke part and protruding parts connected to two opposite ends of the iron core single body yoke part; the iron core single yoke part is positioned on the circumference of the iron core; the protruding parts of two adjacent iron core monomers are matched to form winding teeth; the winding teeth and the isolation teeth are alternately arranged;

the insulating bracket wraps the iron core; the insulating support is formed by injection molding; and

a plurality of windings mounted on the core at uniform intervals; the windings correspond to the winding teeth one to one.

Above-mentioned motor stator, simple structure, convenient to use utilizes a plurality of iron core monomers of parcel of moulding plastics, can pull down the isolation tooth at wire-wound in-process, increases wire winding space to on the winding finishes, will keep apart the tooth and install back the iron core monomer again, can effectively improve the packaging efficiency of iron core, improve wire winding efficiency, reduce assemble duration, be convenient for improve production efficiency.

In one embodiment, the middle part of the yoke part of the single iron core body is provided with a plugging slot; one side of the isolation teeth is convexly provided with an insert block, and the insert block can be slidably inserted into the insertion groove, so that the isolation teeth can be detachably mounted on the yoke parts of the iron core monomers.

In one embodiment, the length direction of the plugging slot is consistent with the axial lead direction of the iron core.

In one embodiment, the middle part of the iron core is provided with a mounting cavity; the bulge is kept away from the one end terminal surface of the single yoke portion of iron core with keep apart the tooth and keep away from the one end terminal surface of the single yoke portion of iron core all is located on the circumference of installation cavity.

In one embodiment, the thickness of the projection is less than the thickness of the isolation tooth, which is less than the thickness of the winding tooth.

In one embodiment, a gap is formed between the protruding parts of two adjacent iron core single bodies, and the gap is used for accommodating the insulating bracket.

Drawings

Fig. 1 is a perspective view of a stator of a motor according to an embodiment of the present invention;

FIG. 2 is an exploded view of the stator of the motor shown in FIG. 1;

fig. 3 is a plan view of a core and an insulating support in the stator of the motor shown in fig. 1;

fig. 4 is a plan view of a core element in the stator of the motor shown in fig. 3;

FIG. 5 is a perspective view of an isolation tooth in the stator of the motor shown in FIG. 1;

fig. 6 is a plan view of a core in the motor stator shown in fig. 1.

Reference is made to the accompanying drawings in which:

10-iron core, 11-iron core monomer, 111-iron core monomer yoke part, 112-bulge, 113-plug slot, 12-isolation tooth, 121-insert block, 13-installation cavity, 14-interval, 15-winding tooth and 16-electric terminal;

20-an insulating support;

30-winding.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 6, a stator of a motor according to an embodiment of the present invention includes an iron core 10, an insulating support 20 wrapping the iron core 10, and a plurality of windings 30 uniformly spaced on the iron core 10; the insulating support 20 is injection molded.

The iron core 10 is approximately arranged in a circular ring shape, and the iron core 10 comprises a plurality of iron core single bodies 11 arranged in a circumferential array and isolation teeth 12 detachably mounted in the middle of each iron core single body 11. The core unit 11 includes a core unit yoke portion 111 arranged in a substantially fan shape, and protruding portions 112 connected to opposite ends of the core unit yoke portion 111; the core element yoke portion 111 is located on the circumference of the core 10.

As shown in fig. 4 and 5, the core unit yoke portion 111 has a central insertion/extraction groove 113 formed in a middle portion thereof, and a longitudinal direction of the insertion/extraction groove 113 coincides with an axial line direction of the core 10. One side of the isolation tooth 12 is convexly provided with an insertion block 121, and the insertion block 121 can be slidably inserted into the insertion slot 113, so that the isolation tooth 12 can be detachably mounted on the yoke 111 of the iron core single body.

The middle part of iron core 10 is equipped with installation cavity 13, and installation cavity 13 is used for holding installation electric machine rotor. And a gap 14 is arranged between the convex parts 112 of the two adjacent iron core single bodies 11, the gap 14 is communicated with the mounting cavity 13, and the gap 14 is used for accommodating the insulating bracket 20. Specifically, in the production process, can be earlier batch production a plurality of iron core monomers 11, then install a plurality of iron core monomers 11 in the mould, a plurality of iron core monomers 11 encircle and form the ring structure, pour into fused insulating material into, insulating material fills in the inside in clearance 14, forms insulating support 20 after insulating material cools off the design, and at this moment, each iron core monomer 11 all wraps up in insulating support 20's inside to realize the interconnect between the iron core monomer 11. Compared with the traditional riveting type or welding type stator, the motor stator disclosed by the utility model has the advantages that the iron core monomer 11 is fixed by using the die and then is subjected to injection molding, so that the production difficulty is effectively reduced, and the production efficiency is greatly improved.

The convex parts 112 of two adjacent iron core monomers 11 are matched to form winding teeth 15, the winding teeth 15 correspond to the windings 30 one by one, namely, one winding tooth 15 is used for winding one winding 30, the winding mode can meet the requirement of industrial production, and the matching of the number of poles of each magnetic field of the motor can also be met, so that stable torque is generated; the gap 14 is located in the middle of the winding teeth 15. Winding tooth 15 and isolation tooth 12 set up in turn, and then make winding 30 and isolation tooth 12 set up in turn, isolation tooth 12 is located between the adjacent winding 30 promptly, play the effect of magnetic field isolation, make the magnetic field between the adjacent winding 30 well-defined, effectively prevent between the adjacent winding 30 too close and lead to each other magnetic field mutual interference and loss, simultaneously, can effectively reduce the magnetic flux density of rotor fundamental wave in motor working process, make the rotor produce higher torque, and then the raising the efficiency.

Further, in the production process, if keep apart tooth 12 and the 15 undersized of winding tooth interval, be unfavorable for the wire winding, can also remove from iron core monomer 11 isolation tooth 12, increase wire winding space to in winding 30 winding, treat that winding 30 winding finishes on will keeping apart tooth 12 and reinstall iron core monomer 11 again, can effectively improve the packaging efficiency of iron core, improve wire winding efficiency, reduce the assemble duration, be convenient for improve production efficiency.

As shown in fig. 6, the thickness a of the projection 112 is smaller than the thickness b of the isolation tooth 12, and the thickness b of the isolation tooth 12 is smaller than the thickness c of the winding tooth 15. The end face of one end of the protruding part 112 far away from the yoke part 111 of the single iron core and the end face of one end of the isolation tooth 12 far away from the yoke part 111 of the single iron core are both located on the circumference of the installation cavity 13.

Still further, as shown in fig. 1 and 2, in the present embodiment, the isolation tooth 12 may also be used to load and mount an electrical terminal 16, one end of the electrical terminal 16 is electrically connected to the winding 30, and the other end of the electrical terminal 16 is connected to an external power source.

Above-mentioned motor stator, simple structure, convenient to use utilizes a plurality of iron core monomers 11 of parcel of moulding plastics, can pull down isolation tooth 12 at wire-wound in-process, increases wire winding space to in winding 30 winding, treat after winding 30 finishes again will keep apart tooth 12 and install back iron core monomer 11 again, can effectively improve the packaging efficiency of iron core, improve wire winding efficiency, reduce the assemble duration, be convenient for improve production efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electric machine stator, comprising:

2. The motor stator according to claim 1, wherein a central portion of the core element yoke portion is provided with a plug-in slot; one side of the isolation teeth is convexly provided with an insert block, and the insert block can be slidably inserted into the insertion groove, so that the isolation teeth can be detachably mounted on the yoke parts of the iron core monomers.

3. The stator of claim 2, wherein the insertion slot has a length direction that is aligned with an axial direction of the core.

4. The motor stator according to claim 1, wherein a mounting cavity is provided in a middle portion of the core; the bulge is kept away from the one end terminal surface of the single yoke portion of iron core with keep apart the tooth and keep away from the one end terminal surface of the single yoke portion of iron core all is located on the circumference of installation cavity.

5. The electric machine stator of claim 1, wherein the projections have a thickness less than a thickness of the spacer teeth, the spacer teeth having a thickness less than a thickness of the winding teeth.

6. The stator according to claim 1, wherein a gap is provided between the protruding portions of two adjacent single iron cores, and the gap is used for accommodating the insulating support.