CN114221458B

CN114221458B - Stator

Info

Publication number: CN114221458B
Application number: CN202111557262.4A
Authority: CN
Inventors: 谯龙; 谯伟
Original assignee: Dongguan Weiming Hardware Products Co ltd
Current assignee: Dongguan Weiming Hardware Products Co ltd
Priority date: 2021-12-18
Filing date: 2021-12-18
Publication date: 2024-02-23
Anticipated expiration: 2041-12-18
Also published as: CN114221458A

Abstract

The invention discloses a stator, which comprises a structural main body, wherein the structural main body comprises a stator core formed by punching and stacking a plurality of silicon steel sheets, the stator core is provided with a plurality of teeth which protrude towards the inner side in the axial direction and are distributed at equal intervals, iron core grooves are formed between adjacent teeth, the teeth are formed by arranging a winding part and a limiting part in a T shape in cross section, one outward end of the winding part is fixedly connected with the stator core, the winding part adopts a structure with the width of the middle part decreasing along the upper end and the lower end, and the edges of the upper end and the lower end of the winding part are subjected to rounding angle treatment; the limit groove is formed in the stator core, and edges of the upper end face and the lower end face of the stator core are subjected to fillet treatment, so that on one hand, the stator winding can be fixed on the stator core to avoid loosening, and on the other hand, the edges are subjected to fillet treatment to avoid scraping the side face of the stator winding and even serious damage; meanwhile, the sealing piece is arranged to fill up the iron core slot, so that the loosening probability of the stator winding is reduced.

Description

Stator

Technical Field

The invention relates to the field of motors, in particular to a stator.

Background

The stator is the stationary part of the motor or generator. The stator consists of a stator core, a stator winding and a stand. The main function of the stator is to generate a rotating magnetic field, and the main function of the rotor is to be cut by magnetic lines of force in the rotating magnetic field to generate current.

The most important factor of the stator generating the rotating magnetic field is that most of stator windings on the stator core are directly wound on the stator core in the prior art, and the situation that the stator windings are loose is unavoidable under the long-time use, and meanwhile, the stator windings are damaged in the winding process.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a stator which can solve the problems of the prior art.

The technical scheme adopted for solving the technical problems is as follows: the stator comprises a structural main body, wherein the structural main body comprises a stator core formed by punching and stacking a plurality of silicon steel sheets, the stator core is provided with a plurality of teeth which protrude towards the inner side in the axial direction and are distributed at equal intervals, iron core grooves are formed between adjacent teeth, the teeth are formed by arranging winding parts and limiting parts in a T shape in cross section, one outward end of each winding part is fixedly connected with the stator core, the winding parts adopt a structure with the width of the middle part decreasing along the upper end and the lower end, and the edges of the upper end and the lower end surfaces of each winding part are subjected to rounding angle treatment;

the upper end surface and the lower end surface of the winding part are provided with limit grooves which are symmetrically distributed, the teeth are provided with stator windings with cross sections which are wound on the outer side of the winding part in a shape of a Chinese character 'kou', the stator windings are clamped in the limit grooves, and the stator windings outwards extend to form end-to-end connection ends which are connected with the outside;

the stator core's inboard is equipped with the sealing piece that the cross-section is annular, sealing piece's outer wall with spacing portion one side in-side in close contact, sealing piece's side is equipped with a plurality of radial outside sealing pieces, sealing piece inserts in the clearance between the adjacent tooth, be equipped with on the sealing piece and radially run through sealing piece and sealing piece's louvre.

Further, the thickness of the silicon steel sheet is 0.35-0.4mm;

furthermore, limit holes distributed at equal intervals in circumference are formed in the silicon steel sheets, bolts are inserted into the limit holes to limit and fix a plurality of silicon steel sheets, a vertically placed groove is further formed in the outer wall of the stator core, and welding materials are filled in the groove to fixedly connect the silicon steel sheets;

further, the sealing piece and the sealing piece are made of insulating plastic materials;

further, the stator winding is composed of a plurality of coils with consistent structures, each coil is composed of end parts at two ends and effective edges arranged between the end parts, the effective edges are arranged in the iron core slots, coil connecting wires are further arranged between adjacent coils, and single-side effective edges of the adjacent coils are stacked in the same iron core slot;

further, the outside of stator core is equipped with the frame, one side of frame is equipped with the terminal box, terminal box inwards one side with the end to end link up.

Compared with the prior art, the invention has the beneficial effects that: according to the stator, the limit groove is formed in the stator core, and the edges of the upper end face and the lower end face of the stator core are subjected to fillet treatment, so that on one hand, the stator winding can be fixed on the stator core to avoid loosening, and on the other hand, the fillet treatment is adopted to avoid the edge from scratching the side face of the stator winding and even seriously damaging the side face of the stator winding; meanwhile, the sealing piece is arranged to fill up the iron core slot, so that the loosening probability of the stator winding is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of a first partial structure of the present invention;

FIG. 3 is a schematic view of a second partial structure of the present invention;

FIG. 4 is a schematic diagram of a stator winding in accordance with the present invention;

fig. 5 is a schematic view of a cross-sectional structure of a tooth in the present invention.

Reference numerals in the drawings: 1-silicon steel sheet; 2-stator core; 3-teeth; 4-core slots; 5-winding part; 6-a limiting part; 7-a limit groove; 8-stator windings; 9-a seal; 10-a seal; 11-heat dissipation holes; 12-limiting holes; 13-a bolt; 14-grooves; 15-coil; 16-end; 17-active side; 18-coil connection lines.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

A stator according to the present invention is described in detail below with reference to fig. 1-5: the stator comprises a structural main body, wherein the structural main body comprises a stator core 2 formed by punching and stacking a plurality of silicon steel sheets 1, the stator core 2 is provided with a plurality of teeth 3 protruding towards the inner side in the axial direction and distributed at equal intervals, iron core grooves 4 are formed between every two adjacent teeth 3, each tooth 3 is formed by arranging a winding part 5 and a limiting part 6 in a T-shaped cross section, one end of each winding part 5 facing outwards is fixedly connected with the stator core 2, the winding part 5 adopts a structure with the width of the middle part decreasing along the upper end and the lower end, and the edges of the upper end and the lower end surfaces of the winding part 5 are subjected to rounding angle treatment;

the upper end surface and the lower end surface of the winding part 5 are provided with limit grooves 7 which are symmetrically distributed, the teeth 3 are provided with stator windings 8 with cross sections which are wound on the outer side of the winding part 5 in a shape of a Chinese character 'kou', the stator windings 8 are clamped in the limit grooves 7, and the stator windings 8 outwards extend out to form end-to-end connection ends which are connected with the outside;

the inside of stator core 2 is equipped with the sealing piece 9 that the cross-section is annular, sealing piece 9 the outer wall with the inside one side in spacing portion 6 in close contact, sealing piece 9's side is equipped with a plurality of radial outside sealing pieces 10, sealing piece 10 inserts in the clearance between the adjacent tooth 3, be equipped with on the sealing piece 10 and radially run through sealing piece 10 and sealing piece 9's louvre 11.

Preferably, the thickness of the silicon steel sheet 1 is 0.35-0.4mm;

preferably, the silicon steel sheets 1 are provided with limit holes 12 distributed at equal intervals in circumference, bolts 13 are inserted into the limit holes 12 to limit and fix a plurality of silicon steel sheets 1, the outer wall of the stator core 2 is also provided with vertically placed grooves 14, and the grooves 14 are filled with solder to fixedly connect the silicon steel sheets 1;

preferably, the sealing member 9 and the sealing member 10 are made of insulating plastic materials;

preferably, the stator winding 8 is composed of a plurality of coils 15 with identical structures, the coils 15 are composed of end parts 16 at two ends and effective sides 17 arranged between the end parts 16, the effective sides 17 are arranged in the iron core slots 4, coil connecting wires 18 are further arranged between adjacent coils 15, and single-side effective sides 17 of adjacent coils 15 are stacked in the same iron core slot 4;

preferably, a stand is arranged on the outer side of the stator core 2, a junction box is arranged on one side of the stand, and one inward side of the junction box is communicated with the head-tail connection end.

In summary, according to the stator disclosed by the invention, the limit groove is formed in the stator core, and the edges of the upper end surface and the lower end surface of the stator core are subjected to fillet treatment, so that on one hand, the stator winding can be fixed on the stator core to avoid loosening, and on the other hand, the fillet grinding treatment is adopted to avoid the edge from scraping the side surface of the stator winding or even seriously damaging the side surface of the stator winding; meanwhile, the sealing piece is arranged to fill up the iron core slot, so that the loosening probability of the stator winding is reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The stator is characterized by comprising a structural main body, wherein the structural main body comprises a stator core formed by punching and stacking a plurality of silicon steel sheets, the stator core is provided with a plurality of teeth which protrude towards the inner side in the axial direction and are distributed at equal intervals, iron core grooves are formed between adjacent teeth, the teeth are formed by arranging cross sections of a winding part and a limiting part in a T shape, one outward end of the winding part is fixedly connected with the stator core, the winding part adopts a structure with the width of the middle part decreasing along the upper end and the lower end, and the edges of the upper end and the lower end of the winding part are subjected to rounding angle treatment;

2. A stator according to claim 1, wherein: the thickness of the silicon steel sheet is 0.35-0.4mm.

3. A stator according to claim 1, wherein: the stator core is characterized in that limit holes distributed at equal intervals in circumference are formed in the silicon steel sheets, a plurality of silicon steel sheets are limited and fixed by inserting bolts into the limit holes, a vertically placed groove is further formed in the outer wall of the stator core, and a plurality of silicon steel sheets are fixedly connected by filling welding materials into the groove.

4. A stator according to claim 1, wherein: the sealing piece and the sealing piece are made of insulating plastic materials.

5. A stator according to claim 1, wherein: the stator winding comprises a plurality of coils with consistent structures, each coil comprises end parts at two ends and effective edges arranged between the end parts, each effective edge is arranged in each iron core groove, coil connecting wires are arranged between adjacent coils, and single-side effective edges of adjacent coils are stacked in the same iron core groove.

6. A stator according to claim 1, wherein: the stator core is characterized in that a base is arranged on the outer side of the stator core, a junction box is arranged on one side of the base, and one inward side of the junction box is communicated with the head-tail connection end.