Stator core capable of improving strength of motor stator

Abstract

The stator iron core comprises an iron core main body and pressing plates, the iron core main body is formed by laminating a plurality of stamping sheets, the stamping sheets are provided with a plurality of through holes, the plurality of stamping sheets are connected through the through holes by using pins, the pressing plates are arranged at the two ends of the iron core main body, the pressing plates are provided with seam allowances, and the seam allowances are arranged on the pressing plates. The pressing plate is connected with the motor end cover through the spigot. According to the utility model, the plurality of through holes are arranged on the stamping sheets, after the stamping sheets are laminated and welded, the cylindrical pins are knocked into the through holes of the iron core main body, then the pressing plates are welded at the two ends of the iron core main body, and the spigots on the pressing plates are connected with the motor end covers, so that the strength of the motor stator is effectively improved, the stator is kept stable and does not deform, and meanwhile, a casing can be omitted; the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of motor manufacturing, in particular to a stator core capable of improving the strength of a motor stator. Background Art

[0002] At present, most motors fix the stator core to the casing or base to ensure the strength of the stator core and prevent it from deformation. The stator core is also connected to the end cover through the casing or base. In order to reduce costs and facilitate manufacturing, some motors adopt a solution without a casing or base, but the core strength is not enough, resulting in stator deformation, which affects the yield rate of the whole machine. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a stator core that can improve the strength of the motor stator.

[0005] The utility model proposes a stator core capable of improving the stator strength of a motor, comprising:

[0006] An iron core body, wherein the iron core body is formed by stacking a plurality of stamping sheets, a plurality of through holes are provided on the stamping sheets, and the plurality of stamping sheets are connected by pins through the through holes;

[0007] A pressure plate is arranged at two ends of the core body, a stopper is arranged on the pressure plate, and the pressure plate is connected to the motor end cover through the stopper.

[0008] In some embodiments, the plurality of through holes are evenly distributed along the circumference.

[0009] In some embodiments, the number of the through holes is greater than 4.

[0010] In some embodiments, the through hole and the pin are matched with a small clearance.

[0011] In some embodiments, the through hole is a circular hole and the pin is cylindrical.

[0012] In some embodiments, the pin is made of steel.

[0013] In some embodiments, a plurality of the stamping sheets are connected by welding.

[0014] In some embodiments, the pressing plate is connected to the core body by welding.

[0015] In some embodiments, the pressure plate is sheet metal formed.

[0016] In some embodiments, the stopper is connected to the motor end cover by welding.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model arranges a plurality of through holes on the stamping sheet. After the stamping sheets are stacked and welded, cylindrical pins are hammered into the through holes of the core body, and then pressure plates are welded at both ends of the core body. The stoppers on the pressure plates are connected to the motor end cover, which effectively improves the strength of the motor stator and keeps the stator stable and not deformed. At the same time, the casing can be omitted, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a schematic diagram of the main structure of the iron core of the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the main structure of the iron core of the utility model;

[0022] Description of reference numerals:

[0023] Iron core body 1, through hole 2, pin 3, pressure plate 4, stopper 5, welding seam 6. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The stator core for improving the stator strength of a motor according to an embodiment of the utility model will be described below with reference to the accompanying drawings.

[0026] like Figure 1 and 2 As shown, the stator core of the utility model which can improve the stator strength of the motor includes a core body 1 and a pressure plate 4, wherein the pressure plate 4 is arranged at both ends of the core body 1, that is, a pressure plate 4 is arranged at each of the front and rear ends of the core body 1.

[0027] In some embodiments, the pressing plate 4 is connected to the core body 1 by welding.

[0028] In some embodiments, the pressing plate 4 is formed by sheet metal, and the processing technology is simple and the cost is low.

[0029] A stopper 5 is provided on the pressing plate 4, and the pressing plate 4 is connected to the end cover of the motor through the stopper 5, so that the stator core is connected to the end cover of the motor.

[0030] In some embodiments, the stopper 5 is connected to the motor end cover by welding.

[0031] The core body 1 of the stator core is formed by laminating a plurality of stamping sheets.

[0032] In some embodiments, the multiple stamping sheets of the core body 1 are connected together by welding, and the welding seams 6 are formed when the multiple stamping sheets are welded. The multiple stamping sheets are welded to form the core body 1, which is simple to manufacture and low in cost.

[0033] A plurality of through holes 2 are provided on the stamping sheet. The through holes 2 are directly stamped and formed when the sheet is punched. The plurality of stamping sheets are connected by pins 3 through the through holes 2 , that is, the plurality of stamping sheets are connected by the pins 3 .

[0034] The plurality of through holes 2 are evenly distributed along the circumference, and the number of the through holes 2 is more than 4, such as Figure 1 As shown, the number of through holes 2 is eight.

[0035] The through hole 2 is a circular hole, the pin 3 is a cylindrical hole, and a small gap is formed between the through hole 2 and the pin 3. Specifically, after the stamping sheet is stacked and welded, the cylindrical pin is hammered into the through hole 2 of the core body 1, the through hole 2 and the cylindrical pin 3 are formed with a small gap, and the length of the cylindrical pin 3 is 3-5 mm shorter than that of the core body 1.

[0036] It is understandable that the size of the through hole 2 depends on the outer dimensions of the core body 1 . In actual application, the size of the through hole 2 is set according to the outer dimensions of the core body 1 .

[0037] In some embodiments, the pin 3 is made of steel, which has high strength and low cost.

[0038] The utility model is used to set a plurality of through holes 2 on the stamping sheet. After the stamping sheets are stacked and welded, cylindrical pins are hammered into the through holes 2 of the core body 1, and then pressure plates 4 are welded at both ends of the core body 1. The stoppers 5 on the pressure plates 4 are connected to the motor end cover, which effectively improves the strength of the motor stator and keeps the stator stable and not deformed. At the same time, the casing can be omitted, and the structure is simple.

[0039] The structure of the utility model can be well applied to various motors, is simple to manufacture and assemble, and does not affect the original structure of the motor.

[0040] The utility model effectively improves the strength of the stator, changes the disadvantage of easy deformation when directly stacking and welding the stamping sheets to form the iron core, is simple to manufacture and assemble, thereby improving the processing yield and reducing the cost.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms may be for different embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stator core capable of improving the stator strength of a motor, characterized in that: include: An iron core body, wherein the iron core body is formed by stacking a plurality of stamping sheets, a plurality of through holes are provided on the stamping sheets, and the plurality of stamping sheets are connected by pins through the through holes; A pressure plate is arranged at two ends of the core body, a stopper is arranged on the pressure plate, and the pressure plate is connected to the motor end cover through the stopper.

2. The stator core according to claim 1, characterized in that: The plurality of through holes are evenly distributed along the circumference.

3. The stator core according to claim 1, characterized in that: The number of the through holes is greater than 4.

4. The stator core according to claim 1, characterized in that: The through hole and the pin are matched with each other with a small clearance.

5. The stator core according to claim 1, characterized in that: The through hole is a circular hole, and the pin is a cylindrical shape.

6. The stator core according to claim 1, characterized in that: The pin is made of steel.

7. The stator core according to claim 1, characterized in that: A plurality of the stamping sheets are connected by welding.

8. The stator core according to claim 1, characterized in that: The pressing plate is connected to the core body by welding.

9. The stator core according to claim 1, characterized in that: The pressing plate is formed by sheet metal.

10. The stator core according to claim 1, characterized in that: The stopper is connected to the motor end cover by welding.

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