CN214900371U

CN214900371U - Motor iron core structure

Info

Publication number: CN214900371U
Application number: CN202023239725.6U
Authority: CN
Inventors: 颜丝; 袁春龙; 周向; 陈国旗; 祝令帅
Original assignee: Jiangsu CRRC Electric Co Ltd
Current assignee: Jiangsu CRRC Electric Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-11-26
Anticipated expiration: 2030-12-29

Abstract

The utility model provides a motor iron core structure, which comprises an iron core main body, a tooth pressing plate, a pressing ring and an axial fastener, wherein the iron core main body is a laminated silicon steel sheet; the tooth pressing plates are respectively arranged at two ends of the iron core main body; the pressing rings are respectively covered on the tooth pressing plates; the axial fasteners are respectively arranged on the surfaces of the pressing rings and extrude and compress the pressing rings towards the direction of the iron core main body. The utility model has the advantages of tooth clamp plate manufacturing is simple, be fit for batch production, the product uniformity is good, the yields is high, the iron core tooth opens little and be difficult for the piece that looses.

Description

Motor iron core structure

Technical Field

The utility model relates to a motor manufacturing technology field, concretely relates to motor core structure.

Background

The iron core is an important component of the motor and is made of a key material, namely a silicon steel sheet. In order to reduce eddy current loss and heat generation, the motor iron core is formed by laminating thin silicon steel sheets layer by layer, and two ends of the iron core are axially compressed by adopting a tooth pressing plate and a pressing ring. However, in the actual production process, the phenomena of iron core loose pieces and excessive tooth tension (the axial height of the tooth top of the iron core exceeds the axial height of the tooth bottom) often occur. The iron core scattered sheet and the tooth stretch are too big, easily lead to the motor to generate heat too big, also cause motor vibration and noise problem simultaneously, become the technical problem that technical staff in the field need solve urgently.

In order to solve the problems of loose sheets and tooth tension, the teeth of the tooth pressure plate are pre-bent to achieve the purpose of compressing the iron core silicon steel sheets after assembly. This kind of tooth clamp plate is great usually in thickness, and its tooth passes through modes such as laser cutting or machine tool machining shaping, and raw and other materials are extravagant great, and machine-shaping is with high costs, and is efficient, and has the pre-bending control degree of difficulty big, the relatively poor scheduling problem of uniformity.

Therefore, there is a need to provide a new solution.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that exists among the prior art, the utility model discloses a motor core structure, concrete technical scheme is as follows:

the utility model provides a motor iron core structure, which comprises an iron core main body, a tooth pressing plate, a pressing ring and an axial fastener,

the iron core main body is a laminated silicon steel sheet;

the tooth pressing plates are respectively arranged at two ends of the iron core main body;

the pressing rings are respectively covered on the tooth pressing plates;

the axial fasteners are respectively arranged on the surfaces of the pressing rings and extrude and compress the pressing rings towards the direction of the iron core main body.

Furthermore, the tooth pressing plate comprises a substrate and a pressing block, wherein the substrate is provided with racks which are uniformly distributed, and the pressing block is fixed in the middle of the racks.

Furthermore, the base plate is a thin plate, and the pressing block is welded to the middle position of the rack in a spot welding mode.

Furthermore, the pressing block is wedge-shaped, the large end of the pressing block is close to the tooth top of the rack, and the small end of the pressing block is close to the tooth root of the rack.

Further, the wedge angle of the pressing block is less than 3 degrees.

Further, the substrate is in the shape of a complete circular structure.

Furthermore, the shape of the substrate is a multi-segment sector structure on the same circumference.

Furthermore, the rack is positioned at the inner side of the substrate, and the tooth top of the rack is close to the center of the substrate.

Furthermore, the rack is located outside the substrate, and the tooth top of the rack is far away from the center of the substrate.

The utility model discloses following beneficial effect has:

1. the utility model provides a motor core structure, tooth clamp plate manufacturing is simple, be fit for batch production.

2. The utility model provides a motor core structure, it is with low costs, do benefit to and improve market competition.

3. The utility model provides a motor core structure, the product uniformity is good, and the yields is high.

4. The utility model provides a motor core structure, the iron core tooth is opened for a short time and is difficult for the piece that looses.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a motor core structure provided by an embodiment of the present invention.

Fig. 2 is a schematic view of the structure of the toothed pressure plate of fig. 1 with the rack located substantially outside.

Fig. 3 is a schematic view of the toothed press plate of fig. 1 with the rack substantially inside.

Fig. 4 is a schematic structural view of a cross-sectional view of the tooth pressure plate of fig. 2 and 3.

The iron core comprises an iron core body 1, a tooth pressing plate 2, a pressing ring 3, an axial fastening piece 4, a base plate 21, a pressing block 22 and a rack 23.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides a motor core structure, refer to fig. 1-4, including iron core main part 1, tooth clamp plate 2, clamping ring 3 and axial fastener 4. The iron core main body 1 is a laminated silicon steel sheet. The tooth pressing plates 2 are respectively arranged at two ends of the iron core main body 1. The pressing rings 3 are respectively covered on the tooth pressing plates 2. The axial fasteners 4 are respectively arranged on the surfaces of the pressing rings 3, and the pressing rings 3 are extruded and compressed in the direction of the iron core body 1 by the axial fasteners 4.

The tooth pressing plate 2 comprises a base plate 21 and a pressing block 22, wherein racks 23 which are uniformly distributed are arranged on the base plate 21, and the pressing block 22 is fixed in the middle of the racks 23.

The base plate 21 is a thin plate, and the pressing block 22 is spot-welded to the middle position of the rack 23.

The pressing block 22 is wedge-shaped, the large end of the pressing block 22 is close to the tooth top of the rack 23, and the small end of the pressing block 22 is close to the tooth root of the rack 23.

The wedge angle of the pressure piece 22 is less than 3 deg..

In one embodiment, the substrate 21 is shaped as a complete circular structure.

In one embodiment, the base plate 21 is in the shape of a multi-segment sector structure on the same circumference.

In one embodiment, the rack 23 is located inside the base plate 21, and its tooth top is toward the center of the base plate 21.

In one embodiment, the rack 23 is located outside the base plate 21, and its tooth top is far away from the center of the base plate 21.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications and changes may be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A motor iron core structure is characterized by comprising an iron core main body, a tooth pressing plate, a pressing ring and an axial fastener,

the iron core main body is a laminated silicon steel sheet;

the pressing rings are respectively covered on the tooth pressing plates;

2. The motor iron core structure according to claim 1, wherein the tooth pressing plate comprises a base plate and a pressing block, wherein the base plate is provided with uniformly arranged racks, and the pressing block is fixed in the middle of the racks.

3. The motor core structure according to claim 2, wherein the base plate is a thin plate, and the press block is spot-welded to a middle position of the rack.

4. The motor core structure of claim 2, wherein the compacts are wedge-shaped, with a large end of the compacts being located near the top of the rack and a small end of the compacts being located near the bottom of the rack.

5. The electric machine core structure of claim 2, wherein the wedge angle of the compacts is less than 3 °.

6. The electric machine core structure of claim 2, wherein the base plate is shaped as a complete circular structure.

7. The motor core structure of claim 2 wherein the base plate is shaped as a multi-segment sector on the same circumference.

8. The electric machine core structure according to claim 6 or 7, wherein the rack is located inside the base plate, and the tooth top thereof is toward the center of the base plate.

9. The motor core structure according to claim 6 or 7, wherein the rack is located outside the base plate, and a tooth crest thereof is away from a center of the base plate.