Winding stator core for generator

Abstract

The utility model discloses a winding stator iron core for a generator, which relates to the technical field of motors and comprises an iron core body, the iron core body comprises a yoke part and a tooth part, and a winding groove is jointly formed between the yoke part and the tooth part; the multiple positioning holes are formed in the yoke part of the iron core body in the circumferential direction of the iron core body; the iron core body comprises a yoke part and a plurality of stress hole groups, the stress hole groups comprise first stress holes and second stress holes, the first stress holes and the second stress holes are circumferentially arrayed in the yoke part respectively, and the first stress holes and the second stress holes are used for enhancing the integrity of the overall structure of the iron core body; the plurality of hollow parts are arranged on the yoke part in a circumferential array manner, the number of the hollow parts is the same as that of the tooth parts, and the hollow parts are used for adjusting the deformation of the yoke part. According to the utility model, the stress hole group is arranged, so that the problem of out-of-roundness of the motor stator iron core caused by stress deformation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a wound stator core for a generator. Background Art

[0002] Generators are widely used in industrial and agricultural production, national defense, science and technology, and daily life. There are many forms of generators, and their working principles are all based on the law of electromagnetic induction and the law of electromagnetic force. Appropriate magnetic and conductive materials are used to form magnetic circuits and circuits that conduct electromagnetic induction with each other to generate electromagnetic power, thereby achieving the purpose of energy conversion.

[0003] During the production process of the existing motor stator core, there is a process of winding the stamped strips into spiral stator laminations. During the winding process, the stamped strips are constrained by space, and then the yoke of the punching strips undergoes harmful deformation and wrinkles, which causes the motor stator core to lose its roundness due to stress deformation. Utility Model Content

[0004] The main purpose of the utility model is to provide a wound stator core for a generator. By arranging a stress-bearing hole group, after the first stress-bearing hole and the second stress-bearing hole are deformed by stress extrusion, the cross-sections of the first stress-bearing groove and the second stress-bearing groove are close to each other, thereby ensuring the integrity of the inner circle of the core body, and effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides a winding stator core for a generator, comprising a core body, a positioning hole, a force-bearing hole group and a hollow part;

[0006] The core body comprises a yoke portion and a tooth portion, wherein winding grooves are formed between the yoke portion and the tooth portion, and the number of the winding grooves is the same as the number of the tooth portions;

[0007] The plurality of positioning holes are all opened on the yoke of the core body, and the plurality of positioning holes are evenly arranged along the circumferential direction of the core body;

[0008] The force-bearing hole group includes a first force-bearing hole and a second force-bearing hole, and a plurality of the first force-bearing holes and the second force-bearing holes are respectively arranged in a circumferential array on the yoke, and the first force-bearing holes and the second force-bearing holes are used to enhance the integrity of the overall structure of the core body;

[0009] A plurality of hollow parts are arranged in a circular array on the yoke, and the hollow parts are opened on one side close to the inner circle of the core body. The number of the hollow parts is the same as the number of the teeth, and the hollow parts are used to adjust the deformation of the yoke.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, a first force angle is formed on the side of the first force-bearing hole away from the center of the core body, a first force groove is formed on the side of the first force-bearing hole close to the center of the core body, the straight line where the first force-bearing hole and the first force groove are located coincides with the straight line where the diameter of the first force-bearing hole is located, and the straight line where the first force-bearing hole and the first force groove are located coincides with the straight line where the diameter of the core body is located.

[0012] Furthermore, a second stress angle is formed on the side of the second stress-bearing hole away from the center of the core body, and a second stress groove is formed on the side of the second stress-bearing hole close to the center of the core body. The straight line where the second stress-bearing hole and the second stress groove are located coincides with the straight line where the diameter of the core body is located, and the straight line where the second stress-bearing hole and the second stress groove are located intersects with one end of the second stress-bearing hole.

[0013] Furthermore, the core body is formed by stamping a material strip at one time, and the core body is a multi-layer structure.

[0014] Furthermore, the positioning holes are used to identify the direction during installation, and the provision of the positioning holes improves the heat dissipation efficiency of the core body.

[0015] Furthermore, the hollow portion is arranged in a long strip shape, and the positioning holes and the force-bearing hole group are arranged in a circular shape.

[0016] The beneficial effects of the utility model are as follows: the utility model provides a winding stator core for a generator, which has the following advantages:

[0017] 1. The utility model provides a stress-bearing hole group. When the stamped material strip is wound, the yoke of the core body is subjected to external force, the first stress-bearing hole and the second stress-bearing hole are squeezed and deformed, the two side sections of the first stress-bearing groove are squeezed and pressed together, and the two side sections of the second stress-bearing groove are squeezed and pressed together. At the same time, the first stress-bearing angle and the second stress-bearing angle disperse the external force, ensuring the unity of the center of the circle, so that the yoke of the core body remains circular, thereby avoiding the problem that when the material strip of the existing stator core is wound, the stress groove on the stress hole and the stress angle are not on the same straight line, and the two sides of the stress groove cannot be close to each other after the force is applied, thereby causing the core to lose its roundness due to stress deformation.

[0018] 2. The utility model provides hollow parts. When the stamped material strip is wound, the yoke of the core body is subjected to external force. Under the action of external force, multiple hollow parts keep the inner circle section of the core body close together, ensuring the unity of the center of the circle, so that the overall structure of the core body is more solid, and the yoke of the core body remains circular, thereby avoiding the problem of loss of roundness due to force deformation during the winding process.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a wound stator core for a generator proposed in the utility model.

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of a wound stator core for a generator proposed in the utility model from another angle.

[0023] Figure 3 This is a schematic diagram of the two-dimensional structure of an iron core body in a wound stator iron core for a generator proposed in the utility model.

[0024] Figure 4 The utility model provides a winding stator core for a generator Figure 3 Enlarged view of point A in the middle.

[0025] In the figure: 1. core body; 2. yoke; 3. tooth; 4. winding groove; 5. positioning hole; 6. force-bearing hole group; 7. hollow part; 8. second force-bearing groove; 9. first force-bearing groove; 10. second force-bearing angle; 11. first force-bearing angle; 12. first force-bearing hole; 13. second force-bearing hole. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-4 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] like Figure 1-4 As shown, the utility model provides a winding stator core for a generator, comprising a core body 1, a positioning hole 5, a force-bearing hole group 6 and a hollow portion 7;

[0030] The core body 1 is a multi-layer structure, and the core body 1 includes a yoke 2 and a tooth 3. A winding groove 4 is formed between the yoke 2 and the tooth 3. The winding groove 4 is used to wind a metal wire. The number of the winding grooves 4 is the same as the number of the tooth 3.

[0031] The plurality of positioning holes 5 are all provided on the yoke 2 of the core body 1, and the plurality of positioning holes 5 are evenly arranged along the circumferential direction of the core body 1. The positioning holes 5 are arranged in a circular shape. The extraction of the positioning holes 5 improves the heat dissipation efficiency of the core body 1, and the positioning holes 5 are used to identify the direction during installation, thereby improving the production efficiency of the installation process;

[0032] The force-bearing hole group 6 includes a first force-bearing hole 12 and a second force-bearing hole 13, and a plurality of the first force-bearing holes 12 and the second force-bearing holes 13 are respectively arranged in a circumferential array on the yoke 2, and the first force-bearing holes 12 and the second force-bearing holes 13 are used to enhance the integrity of the overall structure of the core body 1;

[0033] A plurality of the stress-bearing hole groups 6 are arranged in a circumferential array on the yoke 2 , and the stress-bearing hole groups 6 are used to enhance the integrity of the overall structure of the core body 1 ;

[0034] A plurality of hollow portions 7 are arranged in a circumferential array on the yoke 2, and the hollow portions 7 are opened on one side close to the inner circle of the core body 1. The hollow portions 7 are used to adjust the deformation of the yoke 2, and the number of the hollow portions 7 is the same as the number of the teeth 3.

[0035] In this embodiment, the core body 1 is formed by one-time stamping of a material strip, and the machine used is a press;

[0036] In this embodiment, the hollow portion 7 is arranged in a long strip shape, and the force-bearing hole groups 6 are arranged in a circular shape;

[0037] In this embodiment, a first stress angle 11 is provided on a side of the first stress hole 12 away from the center of the core body 1, a first stress groove 9 is provided on a side of the first stress hole 12 close to the center of the core body 1, a straight line where the first stress hole 12 and the first stress groove 9 are located coincides with a straight line where the diameter of the first stress hole 12 is located, and a straight line where the first stress hole 12 and the first stress groove 9 are located coincides with a straight line where the diameter of the core body 1 is located, a second stress angle 10 is provided on a side of the second stress hole 13 away from the center of the core body 1, a second stress groove 8 is provided on a side of the second stress hole 13 close to the center of the core body 1, a straight line where the second stress hole 13 and the second stress groove 8 are located coincides with a straight line where the diameter of the core body 1 is located, and a straight line where the second stress hole 13 and the second stress groove 8 are located intersects with an end portion of one side of the second stress hole 13;

[0038] In this embodiment, when the stamped material strip is wound, the yoke 2 of the core body 1 is subjected to external force, the first force-bearing hole 12 and the second force-bearing hole 13 are squeezed and deformed, the two side sections of the first force-bearing groove 9 are squeezed and pressed together, and the two side sections of the second force-bearing groove 8 are squeezed and pressed together. At the same time, the first force angle 11 and the second force angle 10 disperse the external force to ensure the unity of the center of the circle, so that the yoke 2 of the core body 1 remains circular, thereby avoiding the problem that the force groove and the force angle on the force hole are not on the same straight line when the material strip of the existing stator core is wound, and the two sides of the force groove cannot be close to each other after the force is applied, thereby causing the core to lose its roundness due to deformation due to force. At the same time, under the joint action of the second force groove 8 and the second force angle 10, the overall structure of the core body 1 is made more solid, and the inner circle section of the core body 1 is made close to each other, thereby increasing the magnetic circuit and improving the magnetic flux, so that the product power is higher and more stable.

[0039] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A wound stator core for a generator, characterized in that: include: An iron core body (1), the iron core body (1) comprising a yoke (2) and a tooth (3), a winding slot (4) being formed between the yoke (2) and the tooth (3), the number of the winding slots (4) being the same as the number of the tooth (3); Positioning holes (5), wherein a plurality of the positioning holes (5) are all provided on the yoke (2) of the core body (1), and the plurality of the positioning holes (5) are evenly arranged along the circumferential direction of the core body (1); A force-bearing hole group (6), the force-bearing hole group (6) comprising a first force-bearing hole (12) and a second force-bearing hole (13), a plurality of the first force-bearing holes (12) and the second force-bearing holes (13) are respectively arranged in a circumferential array on the yoke (2), and the first force-bearing holes (12) and the second force-bearing holes (13) are used to enhance the integrity of the overall structure of the core body (1); A hollow portion (7), wherein a plurality of the hollow portions (7) are arranged in a circular array on the yoke (2), and the hollow portions (7) are arranged in an open manner on a side close to the inner circle of the core body (1), the number of the hollow portions (7) being arranged is the same as the number of the teeth (3), and the hollow portions (7) are used to adjust the deformation of the yoke (2).

2. A wound stator core for a generator according to claim 1, characterized in that: A first force angle (11) is provided on the side of the first force-bearing hole (12) away from the center of the iron core body (1), and a first force groove (9) is provided on the side of the first force-bearing hole (12) close to the center of the iron core body (1). The straight line where the first force-bearing hole (12) and the first force groove (9) are located coincides with the straight line where the diameter of the first force-bearing hole (12) is located, and the straight line where the first force-bearing hole (12) and the first force groove (9) are located coincides with the straight line where the diameter of the iron core body (1) is located.

3. The wound stator core for a generator according to claim 1, characterized in that: A second force angle (10) is provided on the side of the second force-bearing hole (13) away from the center of the iron core body (1), and a second force groove (8) is provided on the side of the second force-bearing hole (13) close to the center of the iron core body (1). The straight line where the second force-bearing hole (13) and the second force groove (8) are located coincides with the straight line where the diameter of the iron core body (1) is located, and the straight line where the second force-bearing hole (13) and the second force groove (8) are located intersects with one end of the second force-bearing hole (13).

4. The wound stator core for a generator according to claim 1, characterized in that: The iron core body (1) is formed by one-time stamping of a material strip, and the iron core body (1) is a multi-layer structure.

5. The wound stator core for a generator according to claim 1, characterized in that: The positioning hole (5) is used to identify the direction during installation, and the provision of the positioning hole (5) improves the heat dissipation efficiency of the iron core body (1).

6. A wound stator core for a generator according to claim 1, characterized in that: The hollow portion (7) is arranged in a long strip shape, and the positioning hole (5) and the force-bearing hole group (6) are arranged in a circular shape.

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