CN218829295U

CN218829295U - Inner rotor split stator core structure with stable assembly size

Info

Publication number: CN218829295U
Application number: CN202223245339.7U
Authority: CN
Inventors: 杨良才; 李红文; 罗英; 何超飞
Original assignee: Zhongshan Midis Power Technology Co ltd
Current assignee: Zhongshan Midis Power Technology Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-04-07
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to the technical field of motors, in particular to an inner rotor split stator core structure with stable assembly size, which comprises an outer split stator core with a winding, wherein the outer split stator core with the winding comprises a retainer, and a plurality of split stator core units wound with coils are arranged around the inner wall of the retainer; the assembly excircle of the stator core with the winding of the inner rotor structure is stable in size, deformation cannot occur, and the stator core with the winding and the inner circle of the motor shell are easy, simple and reliable to assemble.

Description

Inner rotor split stator core structure with stable assembly size

Technical Field

The utility model relates to the technical field of motors, concretely relates to stable inner rotor split stator core structure of assembly size.

Background

In order to reduce the production cost of the motor and improve the utilization rate and the production efficiency of materials, a split type stator core structure adopting an outer rotor is gradually applied and popularized. However, the split stator structure of the inner rotor structure is still not mature, and some problems exist in production and assembly.

For example, the technology of "inner rotor permanent magnet motor with split stator structure with low torque ripple" disclosed in patent CN202023148392.6, has the following disadvantages:

(1) After the winding split stator is manufactured, the winding split stator is easy to deform in the carrying and paint dipping processes, the excircle size precision of the assembly often cannot meet the ideal requirement, even becomes elliptical, the subsequent assembly into a motor shell is difficult, and the assembly of some stators at larger deformation points cannot be performed. Although the deformation can be controlled by a special tool, the effect is not ideal and the production efficiency is low.

(2) Because the stator takes place deformation easily, extrude each other between the adjacent split stator core unit and result in the damaged risk of enameled wire enamel skin easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect with not enough, provide an assembly stable in size's inner rotor split stator core structure.

The utility model discloses an inner rotor split stator core structure with stable assembly size, which comprises an outer split stator core with a winding, wherein the outer split stator core with the winding comprises a retainer, and a plurality of split stator core units wound with coils are uniformly arranged around the inner wall of the retainer;

the retainer comprises a yoke part, the outer end face of the yoke part is a stator assembling face, and an integrated key is arranged on the stator assembling face; a plurality of mortises are formed in the periphery of the inner wall of the retainer, and retainer positioning surfaces are correspondingly formed on two sides of each mortice;

the split stator core unit comprises a tooth part, one end of the tooth part is provided with a tenon, and the tenon is matched with the mortise of the retainer; the other end of the tooth part is provided with a pole shoe; iron core positioning surfaces are correspondingly arranged on two sides of the tenon of the tooth part and matched with the retainer positioning surfaces; and a coil is wound on the tooth part.

Furthermore, the inner walls of the split stator core units in the retainer form a first circular track surface, and the first circular track surface and the retainer are of a concentric circle structure.

Furthermore, the part between the two retainer positioning surfaces between the two mortises on the inner wall of the yoke part is an inner arc-shaped surface, a plurality of inner arc-shaped surfaces form a second inner circular surface track, and the second inner circular surface track and the retainer are of a concentric circle structure.

Further, the integral key is integrally manufactured with the retainer, and the number of the integral keys can be one or more.

Further, the shape of tenon is dovetail type or arc type.

Further, the shape of the mortise is dovetail type or arc type.

After the structure is adopted, the utility model discloses beneficial effect does: an inner rotor split stator core structure that assembly size is stable, it realizes that there is winding stator core's assembly excircle size of inner rotor structure is stable, has and can not take place deformation, has winding stator core and motor housing in the circle assemble advantages such as easy, simple, reliable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:

fig. 1 is a schematic view illustrating an assembly of a stator core with windings and a motor casing according to the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the assembly of the stator core with winding and the motor casing in the present invention;

fig. 3 is a schematic structural view of a stator core with windings according to the present invention;

fig. 4 is a schematic perspective view of the split stator core unit and the retainer assembly of the present invention;

fig. 5 is a schematic structural view of the retainer of the present invention;

fig. 6 is a schematic perspective view of a split stator core unit according to the present invention;

fig. 7 is a schematic structural diagram of a split stator core unit according to the present invention.

Description of reference numerals:

motor housing-a; a keyway-a 1;

the outer split is provided with a winding stator core-b;

a retainer-1; a mortise-101; cage positioning face-102; a yoke-103; stator mounting face-104; an integral bond-105;

a split stator core unit-2; tenon-201; an iron core positioning surface-202; tooth-203; pole shoe-204

A coil-3; .

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 3 to 7, the inner rotor split stator core structure with stable assembly dimension according to the present embodiment includes an outer split stator core b with windings, the outer split stator core b with windings includes a holder 1, and a plurality of split stator core units 2 wound with coils 3 are disposed around an inner wall of the holder 1;

the shape of the retainer 1 is a circular ring, the retainer 1 comprises a yoke part 103, the outer end surface of the yoke part 103 is a stator assembling surface 104, and an integrated key 105 is arranged on the stator assembling surface 104; a plurality of mortises 101 are uniformly formed in the periphery of the inner wall of the retainer 1, and retainer positioning surfaces 102 are correspondingly formed on two sides of each mortice 101;

the split stator core unit 2 comprises a tooth part 203, one end of the tooth part 203 is provided with a tenon 201, and the tenon 201 is matched with the mortise 101 of the retainer 1; the other end of the tooth part 203 is provided with a pole shoe 204; two sides of the tenon 201 of the tooth part 203 are correspondingly provided with iron core positioning surfaces 202, and the iron core positioning surfaces 202 are matched with the retainer positioning surface 102; the teeth 203 are wound with coils 3.

Furthermore, the inner walls of the plurality of split stator core units 2 in the holder 1 form a first circular track surface, and the first circular track surface and the holder 1 are of a concentric structure.

Furthermore, the part between the two retainer positioning surfaces 102 between the two mortises 101 on the inner wall of the yoke 103 is an inner arc-shaped surface, and a second inner circular surface track formed by a plurality of inner arc-shaped surfaces is of a concentric circle structure with the retainer 1.

Further, the integral key 105 is integrally formed with the holder 1, and the number of the integral keys 105 may be one or more.

Further, the shape of the tenon 201 is a dovetail shape or an arc shape.

Further, the shape of the mortise 101 is a dovetail shape or an arc shape.

The working principle of the utility model is as follows:

in the design, the outer split stator core b with the winding comprises a retainer 1, and a plurality of split stator core units 2 wound with coils 3 are arranged around the inner wall of the retainer 1. The split stator core unit in the design is in a T shape and is formed by laminating a plurality of punching sheets.

The structure of the retainer 1 in the design is an annular structure, and can be formed by laminating a plurality of punching sheets and also can be formed by other good magnetic conductive materials. The outer end surface of the cage 1 is a cage positioning surface 102, and the cage positioning surface 102 is provided with an integral key 105. The integral key 105 is fitted with a key groove a1 on the motor casing a. A plurality of mortises 101 are formed in the periphery of the inner wall of the retainer 1, and the mortises 101 are matched with tenons 201 of the split stator core units 2. The coil 3 is wound around the tooth portion 203.

And is convenient to be matched with the retainer 1 for installation. Iron core positioning surfaces 202 are arranged on two sides of a tenon 201 of a tooth part 203 of the split stator iron core unit 2 correspondingly provided with the holder positioning surfaces 102 on two sides of the mortise 101 on the holder 1, and the two iron core positioning surfaces 202 are matched with the holder positioning surfaces 102.

During installation, the tenon 201 of the split stator core unit 2 is clamped into the mortise 101 on the inner wall of the holder 1, and at this time, the core positioning surfaces 202 on two sides of the tooth 203 of the split stator core unit 2 are arranged on the holder positioning surfaces 102 on two sides of the tenon 201, so that positioning fit installation is formed.

As shown in fig. 1-2, the operation of installing the outer-lobed wound stator core b in the present design into the motor casing a is: an integral key 105 on the retainer 1 in the stator core b with the outer split winding is clamped into a key groove a1 on the inner wall of the motor shell a to form positioning clamping. And then the stator (stator core b with winding in external split) is formed by wiring and paint dipping through the required electrical schematic diagram.

The integral key 105 in this design is a positioning key, and has a convex structure, and the shape of the integral key can be a rectangle, an arc and the like. The stator mounting surface 104 in this design is circular and fits the inner wall of the motor housing a. The integral key 105 is integrally manufactured with the cage 1. In this design, a plurality of split iron core unit is inlayed with the tongue-and-groove through the tenon of tooth portion one end and is connected together and form the stator, and when the stator assembled the motor casing, the convex structure on the circular holder was connected with the concave structure that corresponds on the casing.

The utility model has the advantages as follows:

(1) The assembly excircle of the stator core with the winding has stable size and is not easy to deform in the processes of paint dipping and carrying.

(2) The stator core with the winding is easily assembled with the motor shell, and the assembly efficiency is improved.

(3) The stator is prevented from being deformed by the aid of a tool, and defective products caused by too large deformation and incapability of use are avoided.

(4) Simple structure, assembly efficiency is high.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an assembly stable in size's inner rotor split stator core structure which characterized in that: the split-type stator core comprises a holder, wherein a plurality of split-type stator core units wound with coils are arranged on the periphery of the inner wall of the holder;

the retainer comprises a yoke part, the outer end face of the yoke part is a stator assembling face, and an integrated key is arranged on the stator assembling face; a plurality of mortises are uniformly formed in the periphery of the inner wall of the retainer, and retainer positioning surfaces are correspondingly formed on two sides of each mortice;

2. An assembled dimensionally stable inner rotor split stator core structure according to claim 1, wherein: the inner walls of the split stator core units in the retainer form a first circular track surface, and the first circular track surface and the retainer are of concentric circle structures.

3. An assembled dimensionally stable inner rotor split stator core structure according to claim 1, wherein: the part between the two retainer positioning surfaces between the two mortises on the inner wall of the yoke part is an inner arc-shaped surface, a second inner circular surface track formed by a plurality of inner arc-shaped surfaces and the retainer are of a concentric circle structure.

4. An assembled dimensionally stable inner rotor split stator core structure according to claim 1, wherein: the integral keys and the retainer are integrally manufactured, and the number of the integral keys can be one or more.

5. An assembled dimensionally stable inner rotor split stator core structure according to claim 1, wherein: the tenon is in a dovetail shape or an arc shape.

6. An assembled dimensionally stable inner rotor split stator core structure according to claim 1, wherein: the shape of the mortise is dovetail or arc.