Terminal copper bar riveting and welding structure

Abstract

The utility model provides a terminal copper bar riveting and welding structure comprising a copper bar body and a connecting column, the copper bar body is provided with a riveting through hole, the riveting through hole penetrates through the copper bar body along the vertical direction, the riveting through hole is cylindrical, the connecting column comprises a riveting part, a welding part and a connecting part which are integrally arranged, the riveting part penetrates through the riveting through hole, and the welding part penetrates through the connecting part. The upper end face of the riveting part is an arc-shaped face, the middle of the arc-shaped face protrudes upwards, the arc-shaped face corresponds to the upper portion of the riveting through hole, the welding part is fixed to the lower portion of the riveting part, the upper end face of the welding part makes contact with the lower end face of the copper bar body after riveting, and the upper end of the connecting part is fixed to the middle of the lower end of the welding part. The copper bar body and the connecting column are tightly matched and fixed through riveting and then are further fixed through welding, the fixing firmness degree is high, the riveting effect is improved, after riveting, the arc-shaped face becomes a plane flush with the upper end face of the copper bar body, attractiveness is achieved, and the electrical function of the copper bar can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of copper bar assembly structures, and particularly relates to a riveting and welding structure for a terminal copper bar. Background Art

[0002] The terminal copper bar is used to connect with the terminal. During use, screws are often used to fix the terminal and the copper bar. In some application scenarios, connection columns for connecting with the terminal need to be fixed on the copper bar first, and then the terminal is connected through the connection columns. Generally, the connection columns are fixedly connected to the copper bar by welding. However, relying solely on welding as a fixing means to fix the copper bar and the connection columns, the fixing effect is not reliable. During use, the connection columns and the copper bar are prone to cracking at the welding joint due to vibration, and finally the connection columns and the copper bar are separated, resulting in connection failure and affecting the normal use of the product. Therefore, it is necessary to make a riveting and welding structure for the terminal copper bar to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a riveting and welding structure for a terminal copper bar to solve the problems mentioned in the background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A riveting and welding structure for a terminal copper bar, comprising a copper bar body and a connection column. A riveting through hole is formed in the copper bar body, and the riveting through hole penetrates the copper bar body in the vertical direction. The shape of the riveting through hole is a cylinder. The connection column includes a riveting part, a welding part and a connecting part which are integrally arranged. The riveting part passes through the riveting through hole. The upper end surface of the riveting part is an arc surface, and the middle part of the arc surface protrudes upward. The arc surface corresponds to the upper part of the riveting through hole. The welding part is fixed below the riveting part. The upper end surface of the welding part contacts the lower end surface of the copper bar body after riveting. The upper end of the connecting part is fixed in the middle of the lower end of the welding part.

[0006] Further description of the utility model: A riveting blind hole is also formed in the copper bar body. The riveting blind hole corresponds to the lower end of the copper bar body. The middle part of the riveting blind hole is communicated with the middle part of the riveting through hole. The welding part corresponds to the riveting blind hole.

[0007] Further description of the utility model: The shape of the riveting blind hole is frustum-shaped, and an annular inner wall is provided on the outer periphery of the riveting blind hole. The annular inner wall inclines towards the middle from top to bottom.

[0008] Further description of the utility model: The shape of the welding part is a cylinder. The upper end surface of the welding part corresponds to the inside of the welding blind hole. An annular riveting groove is provided on the outer periphery of the lower end of the welding part.

[0009] Further description of the present utility model: The inner wall at the upper end of the annular riveting groove is a riveting plane, and the plane of the lower end of the copper bar body corresponding to the outer periphery of the riveting blind hole is a welding plane. After riveting, the riveting plane is flush with the welding plane.

[0010] Further description of the present utility model: The inclination angle of the annular inner wall is 5° to 15°

[0011] The beneficial effects of the present utility model are as follows: When assembling the connecting column and the copper bar body, first pass the riveting part of the connecting column through the riveting through hole of the copper bar body, and use a riveting device to rivet the riveting part. The riveting head on the riveting device first contacts the middle of the arc surface. During the continuous downward pressing process, the material of the riveting part is evenly extruded outward, so that the outer diameter of the riveting part increases, filling the gap between the riveting part and the riveting through hole, and making the riveting part and the copper bar body tightly fit. After riveting, the welding part contacts the lower end surface of the copper bar body, and by welding at the junction of the welding part and the copper bar body, the copper bar body and the connecting column are further fixed, and the two are firmly connected. The advantage of this design is that first, the copper bar body and the connecting column are tightly fixed by riveting, and then the two are further fixed by welding. The fixing firmness is high, and during riveting, by riveting the arc surface, the material can be more evenly extruded outward, improving the riveting effect. After riveting, the arc surface becomes a plane flush with the upper end surface of the copper bar body, which is not only beautiful but also can ensure its electrical function. Description of the Drawings

[0012] Figure 1 is the overall structure diagram of the present utility model;

[0013] Figure 2 is the partial sectional perspective view of the present utility model;

[0014] Figure 3 is the structure diagram of the copper bar body in the present utility model;

[0015] Figure 4 is the structure diagram of the connecting column in the present utility model;

[0016] Figure 5 is the partial sectional view before riveting of the present utility model;

[0017] Figure 6 is the partial sectional view after riveting of the present utility model;

[0018] Description of the Reference Numerals:

[0019] 1. Copper bar body; 11. Riveting through hole; 12. Riveting blind hole; 121. Annular inner wall; 13. Welding plane; 2. Connecting column; 21. Riveting part; 211. Arc surface; 22. Welding part; 221. Annular riveting groove; 2211. Riveting plane; 23. Connecting part. Detailed Implementation Modes

[0020] The present utility model will be further described in conjunction with the accompanying drawings as follows:

[0021] As Figures 1 to 6 shown, a riveting and welding structure for a terminal copper bar includes a copper bar body 1 and a connecting column 2. A riveting through-hole 11 is formed in the copper bar body 1. The riveting through-hole 11 penetrates the copper bar body 1 in the vertical direction. The shape of the riveting through-hole 11 is a cylinder. The connecting column 2 includes a riveting part 21, a welding part 22 and a connecting part 23 which are integrally arranged. The riveting part 21 passes through the riveting through-hole 11. The upper end surface of the riveting part 21 is an arc surface 211. The middle part of the arc surface 211 bulges upward. The arc surface 211 corresponds to the upper part of the riveting through-hole 11. The welding part 22 is fixed below the riveting part 21. The upper end surface of the welding part 22 contacts the lower end surface of the copper bar body 1 after riveting. The upper end of the connecting part 23 is fixed in the middle of the lower end of the welding part 22.

[0022] When assembling the connecting column 2 and the copper bar body 1, first pass the riveting part 21 of the connecting column 2 through the riveting through-hole 11 of the copper bar body 1, and use a riveting device to rivet the riveting part 21. The riveting head on the riveting device first contacts the middle part of the arc surface 211. During the continuous downward pressing process, the material of the riveting part 21 is evenly extruded outward, so that the outer diameter of the riveting part 21 increases, filling the gap between the riveting part 21 and the riveting through-hole 11, and making the riveting part 21 and the copper bar body 1 tightly connected. After riveting, the welding part 22 contacts the lower end surface of the copper bar body 1. By welding at the junction of the welding part 22 and the copper bar body 1, the copper bar body 1 and the connecting column 2 are further fixed, and the connection between the two is firm. The advantage of this design is that first, the copper bar body 1 and the connecting column 2 are tightly fixed by riveting, and then the two are further fixed by welding. The fixing firmness is high. And during riveting, by riveting the arc surface 211, the material can be more evenly extruded outward, improving the riveting effect. After riveting, the arc surface 211 becomes a plane flush with the upper end surface of the copper bar body 1, which is not only beautiful but also can ensure its electrical function.

[0023] A riveting blind hole 12 is also formed in the copper bar body 1. The riveting blind hole 12 corresponds to the lower end of the copper bar body 1. The middle part of the riveting blind hole 12 is communicated with the middle part of the riveting through-hole 11. The welding part 22 corresponds to the riveting blind hole 12.

[0024] During riveting, in addition to riveting the upper riveting part 21, the outer periphery of the welding part 22 is also riveted. After the outer periphery of the welding part 22 is squeezed, it becomes thinner and the outer diameter increases. The outer periphery of the welding part 22 fills the riveting blind hole 12, so that the welding part 22 is also riveted to the copper bar body 1, improving the connection firmness.

[0025] The shape of the riveting blind hole 12 is frustum-shaped, and an annular inner wall 121 is provided on the outer periphery of the riveting blind hole 12, and the annular inner wall 121 inclines towards the middle from top to bottom.

[0026] By providing the inclined annular inner wall 121, the welded part 22 after riveting can be firmly connected to the riveting blind hole 12, preventing the welded part 22 from disengaging downward from the riveting blind hole 12.

[0027] The shape of the welded part 22 is cylindrical. The upper end face of the welded part 22 corresponds to the inside of the welding blind hole, and an annular riveting groove 221 is provided on the outer periphery of the lower end of the welded part 22.

[0028] By providing the riveting groove, the material around the welded part 22 is thinner. When applying pressure to the riveting groove during riveting, the welded part 22 is more likely to be filled into the riveting blind hole 12.

[0029] The upper inner wall of the annular riveting groove 221 is a riveting plane 2211, and the plane of the lower end of the copper row body 1 corresponding to the outer periphery of the riveting blind hole 12 is a welding plane 13. The riveting plane 2211 is flush with the welding plane 13 after riveting.

[0030] After riveting, the riveting plane 2211 is flush with the welding plane 13. During welding, by welding at the junction between the riveting plane 2211 and the welding plane 13, the welding operation is more convenient and the welding stability is also beneficial.

[0031] The inclination angle of the annular inner wall 121 is 5° to 15°, which can effectively prevent the welded part 22 from disengaging downward from the riveting blind hole 12.

[0032] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A riveting and welding structure for a terminal copper bar, characterized in that: It includes a copper bar body and a connecting column. A riveting through hole is formed in the copper bar body. The riveting through hole penetrates the copper bar body in the vertical direction. The shape of the riveting through hole is a cylinder. The connecting column includes a riveting part, a welding part and a connecting part which are integrally arranged. The riveting part passes through the riveting through hole. The upper end face of the riveting part is an arc surface. The middle part of the arc surface protrudes upward. The arc surface corresponds to the upper part of the riveting through hole. The welding part is fixed below the riveting part. The upper end face of the welding part contacts the lower end face of the copper bar body after riveting. The upper end of the connecting part is fixed in the middle of the lower end of the welding part.

2. The riveting and welding structure of a terminal copper bar according to claim 1, wherein: A riveting blind hole is also formed in the copper bar body. The riveting blind hole corresponds to the lower end of the copper bar body. The middle part of the riveting blind hole is communicated with the middle part of the riveting through hole. The welding part corresponds to the riveting blind hole.

3. A terminal copper bar riveting and welding structure according to claim 2, characterized in that: The shape of the riveting blind hole is frustum-shaped. An annular inner wall is provided on the outer periphery of the riveting blind hole. The annular inner wall inclines towards the middle from top to bottom.

4. A terminal copper bar riveting and welding structure according to claim 3, characterized in that: The shape of the welding part is a cylinder. The upper end face of the welding part corresponds to the inside of the welding blind hole. An annular riveting groove is provided on the outer periphery of the lower end of the welding part.

5. A terminal copper bar riveting and welding structure according to claim 4, characterized in that: The upper end inner wall of the annular riveting groove is a riveting plane. The plane of the lower end of the copper bar body corresponding to the outer periphery of the riveting blind hole is a welding plane. The riveting plane is flush with the welding plane after riveting.

6. The riveting and welding structure of a terminal copper bar according to claim 4, characterized in that: The inclination angle of the annular inner wall is 5° to 15°.

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