CN215419769U

CN215419769U - Stator core for motor stator

Info

Publication number: CN215419769U
Application number: CN202121849903.9U
Authority: CN
Inventors: 沈恩明; 沈以撒
Original assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Current assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-04
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a stator core for a motor stator, which comprises core teeth (1), wherein one end of each core tooth (1) is provided with a first tooth top (2), and the other end of each core tooth (1) is provided with a second tooth top (3). According to the utility model, the stator core is arranged into the single core tooth structure, so that the stator core can be connected and fixed through the buckling structure during assembly, thereby omitting an annular connecting structure among tooth bodies, and greatly reducing the weight of the stator core and the required raw material cost; the iron core teeth can also be arranged side by side in a staggered manner in a stamping layout mode, so that the utilization rate of stamping materials is effectively improved, and the generation of waste materials is reduced.

Description

Stator core for motor stator

Technical Field

The utility model relates to a motor, in particular to a stator core for a motor stator.

Background

At present, a conventional stator core is of an annular structure, a plurality of tooth bodies are distributed on the stator core in an annular mode, and the outside of each tooth body can be coated through insulating paper or a stator framework to form stator teeth for winding of a stator winding. However, such a stator core is not only heavy, but also requires a relatively large amount of metal material, which increases the material cost of the motor stator. On the other hand, the conventional stator core is generally formed by punching, but the stator core has an annular shape, so that the consumption of the core material is increased in the punching process, a lot of waste materials are generated, the material utilization rate is low, and the raw material cost is further increased. Therefore, the existing stator core has the problems of heavy weight, low material utilization rate and high raw material cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stator core for a motor stator. It has the characteristics of light weight, high material utilization rate and low raw material cost.

The technical scheme of the utility model is as follows: the stator core for the motor stator comprises core teeth, wherein one ends of the core teeth are provided with first tooth tops, and the other ends of the core teeth are provided with second tooth tops.

In the stator core for the motor stator, the core teeth, the first tooth tops and the second tooth tops are connected with each other in an i-shape.

In the stator core for the motor stator, the first tooth top, the second tooth top and the core teeth are integrally formed, or the core teeth, the first tooth top and the second tooth top are of a split structure, and the core teeth, the first tooth top and the second tooth top are buckled and connected.

In the stator core for the motor stator, the first tooth top is provided with the first fastening surface on the side close to the core teeth, the second tooth top is provided with the second fastening surface on the side close to the core teeth, and the first fastening surface and the second fastening surface are symmetrically arranged on the left side and the right side of the core teeth.

In the stator core for a motor stator, the width of the first tooth top is greater than the width of the second tooth top, and the width of the second tooth top is greater than the sum of the widths of the first fastening surfaces at two sides.

In the stator core for the motor stator, the plurality of core teeth are connected with each other through the connecting layer, and the connecting layer is a plastic-coated layer or a stator framework.

In the stator core for the motor stator, the first tooth tops and the second tooth tops respectively extend to the outer sides of the two ends of the connecting layer and are mutually buckled with the end face of the connecting layer.

In the stator core for the motor stator, the two ends of the connecting layer are both provided with the step grooves, and the inner end faces of the step grooves at the two ends are respectively buckled with the first tooth top and the second tooth top.

In the stator core for the motor stator, the outer portion of the stator framework is coated with the plastic coating layer.

Compared with the prior art, the utility model has the following characteristics:

(1) according to the stator core structure, the iron core teeth are buckled and fixed during assembly through the matching of the iron core teeth, the first tooth tops and the second tooth tops, so that compared with the existing stator core structure, an annular connecting structure among tooth bodies can be omitted, and further the weight of the stator core and the required raw material cost are greatly reduced;

(2) the stator core with the original annular structure is split into the independent core tooth structures, so that the core teeth can be arranged more tightly during punching and stock layout, waste materials generated in the punching process are reduced, the material utilization rate of the utility model is improved, and the raw material cost of the utility model is further reduced; on the basis, the widths of the first tooth top and the second tooth top are limited, so that the arrangement distance between adjacent stator cores can be further shortened through a staggered arrangement structure which is staggered from head to tail when the stator cores are arranged, the material utilization rate is further improved, and the raw material cost is reduced;

(3) the first tooth top, the second tooth top and the iron core teeth are used as split structures and are mutually buckled, so that the first tooth top, the second tooth top and the iron core teeth can be respectively and independently punched and formed, the stock layout compactness of each stamping part is further improved, the utilization rate of stamping materials is improved, and the generation of stamping waste is reduced;

(4) on the basis, the utility model further optimizes the connection structure of the connection layer to the stator core, and the stator framework or the plastic-coated layer can clamp the core teeth during installation, thereby realizing the fixing effect, preventing the core teeth from moving after installation and improving the connection stability and positioning accuracy of the core teeth; through the matching connection structure of the stator framework and the plastic coating layer, on one hand, the rigidity of the motor stator after molding can be improved, and on the other hand, the relative position between the iron core teeth and the stator framework can be limited, so that the roundness and the concentricity of the iron core teeth after molding are improved;

therefore, the utility model has the characteristics of light weight, high material utilization rate and low raw material cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the present invention from another direction;

FIG. 3 is a cross-sectional view of the core teeth and the connecting layer;

FIG. 4 is a profile view of the core teeth and the connecting layer;

fig. 5 is a drawing of a punching pattern of the stator core in embodiment 1;

fig. 6 is a connecting structure diagram of the stator core in embodiment 2.

The labels in the figures are: 1-iron core teeth, 2-first tooth tops, 3-second tooth tops, 4-connecting layers, 5-step grooves, 201-first buckling surfaces and 301-second buckling surfaces.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.

Example 1. The stator core for the motor stator is formed as shown in figures 1-4 and comprises a core tooth 1, wherein one end of the core tooth 1 is provided with a first tooth crest 2, and the other end of the core tooth 1 is provided with a second tooth crest 3.

The iron core teeth 1, the first tooth tops 2 and the second tooth tops 3 are connected with one another in an I shape.

The first tooth top 2, the second tooth top 3 and the iron core teeth 1 are integrally formed in a punching mode.

The first tooth top 2 is provided with a first buckling surface 201 at one side close to the iron core tooth 1, the second tooth top 3 is provided with a second buckling surface 301 at one side close to the iron core tooth 1, and the first buckling surface 201 and the second buckling surface 301 are symmetrically arranged at the left side and the right side of the iron core tooth 1.

The width of the first tooth top 2 is greater than that of the second tooth top 3, and the width of the second tooth top 3 is greater than the sum of the widths of the first fastening surfaces 201 on both sides.

A plurality of iron core teeth 1 are connected with each other through a connecting layer 4, the iron core teeth 1 are separated from each other, the connecting layer 4 is a plastic-coated layer, and the plastic-coated layer is made of plastic materials or thermosetting materials.

The first tooth top 2 and the second tooth top 3 respectively extend to the outer sides of the two ends of the connecting layer 4 and are mutually buckled with the end surface of the connecting layer 4 through the first buckling surface 201 and the second buckling surface 301.

The two ends of the connecting layer 4 are provided with step grooves 5, and the inner end faces of the step grooves 5 at the two ends are buckled with the first tooth crest 2 and the second tooth crest 3 respectively.

The working principle of the utility model is as follows: when punching and stock layout are performed, the stator core can be arranged in a head-to-tail reversing and up-and-down staggering mode according to the structure shown in fig. 5, so that the iron core teeth 1 and the second tooth tops 3 of the middle stator core can be arranged at the gap between the iron core teeth 1 and the second tooth tops 3 of the stator cores on two sides in an inserting mode, the distance between the adjacent stator cores is effectively shortened, the utilization rate of punching materials is improved, waste materials are reduced, and the raw material cost of the stator cores is reduced.

Stator core then can the articulamentum 4 interconnect when the equipment to utilize articulamentum 4 to carry on spacingly to stator core, the lock structure of cooperation first addendum 2 and second addendum 3 avoids stator core at circumference and ascending drunkenness with radially, replaces current annular iron core structure to realize being connected and fixed to stator core. Through the mutual lock of both ends step groove 5 and first addendum 2, second addendum 3, then can further improve the spacing effect to stator core, avoid stator core's not hard up.

Under the matching of the structures, the connecting layer can be used for replacing the existing annular structure iron core structure to realize the installation and the limiting of the iron core teeth 1, so that the weight and the raw material cost of the stator iron core are effectively reduced, and the utilization rate of the iron core material is improved.

Example 2. The stator core for the motor stator is formed as shown in figure 1, and comprises a core tooth 1, wherein one end of the core tooth 1 is provided with a first tooth crest 2, and the other end of the core tooth 1 is provided with a second tooth crest 3.

The iron core teeth 1, the first tooth tops 2 and the second tooth tops 3 are all of split type structures as shown in fig. 6, and the iron core teeth 1, the first tooth tops 2 and the second tooth tops 3 are connected with one another through concave-convex buckling structures.

Through connecting layer 4 interconnect between a plurality of iron core teeth 1, alternate segregation between each iron core tooth 1, connecting layer 4 is stator skeleton, and stator skeleton can be formed by split type structure interconnect, and stator skeleton's outside cladding has the package to mould the layer, and the material that the layer was moulded to the package is plastic material or thermosetting material.

This embodiment is through connecting iron core tooth 1 with

first addendum

2 and 3 locks in second addendum for first addendum 2, second addendum 3 and iron core tooth 1 can be respectively stamping forming alone, thereby further improve the compactness of arranging of each stamping workpiece, improve the utilization ratio to stamping material and reduce the production of punching press waste material. The stator framework and the plastic-coated layer are matched to connect the stator cores, so that on one hand, the overall rigidity of the motor stator can be improved, on the other hand, the stator cores can be limited by the matching of the stator framework and the plastic-coated layer, and the roundness and the concentricity of the stator cores after positioning are improved.

Claims

1. Stator core for motor stator, its characterized in that: the iron core tooth structure comprises an iron core tooth (1), wherein a first tooth top (2) is arranged at one end of the iron core tooth (1), and a second tooth top (3) is arranged at the other end of the iron core tooth (1).

2. The stator core for a motor stator according to claim 1, wherein: the iron core teeth (1), the first tooth tops (2) and the second tooth tops (3) are mutually connected in an I shape.

3. The stator core for a motor stator according to claim 1, wherein: first addendum (2), second addendum (3) and iron core tooth (1) integrated into one piece, perhaps iron core tooth (1), first addendum (2) and second addendum (3) are split type structure, and the lock is connected between iron core tooth (1), first addendum (2) and second addendum (3).

4. The stator core for a motor stator according to claim 1, wherein: the first tooth top (2) is provided with a first buckling surface (201) on one side close to the iron core tooth (1), the second tooth top (3) is provided with a second buckling surface (301) on one side close to the iron core tooth (1), and the first buckling surface (201) and the second buckling surface (301) are symmetrically arranged on the left side and the right side of the iron core tooth (1).

5. The stator core for a motor stator according to claim 4, wherein: the width of the first tooth top (2) is larger than that of the second tooth top (3), and the width of the second tooth top (3) is larger than the sum of the widths of the first buckling surfaces (201) on the two sides.

6. The stator core for a motor stator according to claim 1, wherein: a plurality of iron core teeth (1) are connected with each other through a connecting layer (4), and the connecting layer (4) is a plastic-coated layer or a stator framework.

7. The stator core for a motor stator according to claim 6, wherein: the first tooth top (2) and the second tooth top (3) respectively extend to the outer sides of two ends of the connecting layer (4) and are buckled with the end face of the connecting layer (4).

8. The stator core for a motor stator according to claim 7, wherein: the two ends of the connecting layer (4) are provided with step grooves (5), and the inner end faces of the step grooves (5) at the two ends are buckled with the first tooth top (2) and the second tooth top (3) respectively.

9. The stator core for a motor stator according to claim 6, wherein: the outside cladding of stator skeleton is moulded the layer.