A national standard and European standard charging interface welded terminal structure

Abstract

The utility model relates to national standard and the welding type terminal structure of charging interface of Europe standard technical field, especially a national standard and the welding type terminal structure of charging interface of Europe standard, including terminal head subassembly and connecting end, terminal head subassembly and connecting end pass through friction welding connection, terminal head subassembly is head male needle or terminal subassembly, the connecting end is screwing tail end or welding tail end, terminal subassembly includes terminal main part, reed and gland, the inside of terminal main part is equipped with reed, and the front end is locked through the gland, the screwing tail end is made through riveting screw thread after integrated cold upsetting forming, the welding tail end is made through integrated cold upsetting forming, the utility model discloses through split type cold upsetting forming and friction welding process, realizes the modularization combination of terminal head subassembly and connecting end, to realize the cost reduction and efficiency increase.

Description

Technical Field

[0001] This utility model relates to the technical field of welding terminal structure for charging interfaces that conform to national and European standards, and in particular to a welding terminal structure for charging interfaces that conforms to national and European standards. Background Technology

[0002] The power terminals of existing electric vehicle charging sockets according to national and European standards are all one-piece terminals, which require machining to form the entire terminal. This results in a large amount of time spent in manufacturing and significant material waste during the process. In addition, the above forming process has certain limitations on the product's shape and structure. Based on these issues, the existing terminal forming process cannot make the terminal structure simpler. Utility Model Content

[0003] To overcome the shortcomings of existing designs, this utility model provides a welding terminal structure for charging interfaces that conforms to both national and European standards.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a welding terminal structure for charging interfaces conforming to national and European standards, including a terminal head assembly and a connecting end; the terminal head assembly and the connecting end are connected by friction welding; the terminal head assembly is a male pin or a terminal assembly, and the connecting end is a screw-in tail end or a welding tail end; the terminal assembly includes a terminal body, a spring, and a pressure cap, the terminal body has a spring inside, and the front end is locked by the pressure cap; the screw-in tail end is formed by integral cold forging and then riveting threads, and the welding tail end is formed by integral cold forging.

[0005] According to another embodiment of the present invention, the terminal body further includes an internal receiving cavity and a front-end limiting groove; the spring is movably installed in the receiving cavity, and the pressure cap is disposed in the limiting groove at the front end of the terminal body, and is interference-fitted with the limiting groove.

[0006] According to another embodiment of the present invention, the spring is further comprising: open at both ends, including two sets of positioning rings with the same front and rear diameters and an elastic grid bar in the middle; the elastic grid bar is provided in several sets, with the two ends respectively connected to the two sets of positioning rings, forming a rotating and waist-tight spiral shape; the pressure cover includes a cap body and a locking part; the cap body covers the top of the terminal body, the positioning part has a cap body edge that protrudes downward, the side of the positioning part abuts against the limiting groove, and the end abuts against the stepped surface of the terminal body.

[0007] According to another embodiment of the present invention, the inner diameter of the cap body is smaller than the diameter of the positioning ring.

[0008] According to another embodiment of the present invention, the European standard screw terminal structure further includes the head male pin and the screw tail end.

[0009] According to another embodiment of the present invention, the European standard welding terminal structure further includes the head male pin and the welding tail end.

[0010] According to another embodiment of the present invention, the standard screw-welded terminal includes the terminal assembly and the screw tail end.

[0011] According to another embodiment of the present invention, the standard welding terminal structure further includes the terminal assembly and the welding tail end.

[0012] The beneficial effects of this utility model are that the terminal structure of this utility model can select the corresponding tail material (copper material, aluminum material) for friction welding according to the different materials (copper wire, aluminum wire) of the required connecting wire, thereby achieving cost reduction and efficiency improvement. When it is necessary to weld or screw copper wire, the tail end of the terminal can also be selected to be made of copper material and friction welded to the front end of the terminal, and then the whole is subjected to surface electroplating treatment process, which can further reduce the cost of the terminal. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a structural diagram of a standard screw-on welded terminal.

[0015] Figure 2 This is a structural diagram of a standard screw-on welded terminal.

[0016] Figure 3 This is a structural diagram of a European standard solder terminal;

[0017] Figure 4 This is an assembly structure diagram of the terminal assembly;

[0018] Figure 5 This is an internal sectional view of a standard screw-welded terminal.

[0019] Figure 6 This is an internal sectional view of a standard screw-welded terminal.

[0020] Figure 7 This is an internal sectional view of the European standard welded terminal structure.

[0021] In the figure: 1. Terminal head assembly, 2. Connecting end, 3. Head male pin, 4. Terminal assembly, 5. Screw tail end, 6. Welding tail end, 7. Terminal body, 8. Spring, 9. Pressure cap, 10. Receiving cavity, 11. Limiting groove, 12. Positioning ring, 13. Elastic grid bar, 14. Cap body, 15. Locking part. Detailed Implementation

[0022] like Figure 1-3As shown, a Chinese national standard and European standard charging interface welded terminal structure includes a terminal head assembly 1 and a connecting end 2; the terminal head assembly 1 and the connecting end 2 are connected by friction welding; the terminal head assembly 1 is a male head pin 3 or a terminal assembly 4, and the connecting end 2 is a screw-in tail end 5 or a welded tail end 6; the terminal assembly 4 includes a terminal body 7, a spring 8 and a pressure cap 9, the terminal body 7 is provided with a spring 8 inside, and the front end is locked by the pressure cap 9; the screw-in tail end 5 is formed by integral cold forging and then riveting threads, and the welded tail end 6 is formed by integral cold forging.

[0023] According to another embodiment of the present invention, the terminal body 7 further includes an internal receiving cavity 10 and a front limiting groove 11; the spring 8 is movably installed in the receiving cavity 10, and the pressure cover 9 is disposed in the limiting groove 11 at the front end of the terminal body 7, and is interference-fitted with the limiting groove 11.

[0024] According to another embodiment of the present invention, the spring 8 is further comprising two open ends, including two sets of positioning rings 12 with the same front and rear diameters and an elastic grid 13 in the middle; the elastic grid 13 is provided in several sets, with the two ends respectively connected to the two sets of positioning rings 12, forming a rotating and waist-tight spiral shape; the pressure cover 9 includes a cap 14 and a locking part 15; the cap 14 covers the top of the terminal body 7, the positioning part has the edge of the cap 14 and protrudes downward, the side of the positioning part abuts against the limiting groove 11, and the end abuts against the stepped surface of the terminal body 7.

[0025] According to another embodiment of the present invention, the inner diameter of the cap body 14 is smaller than the diameter of the positioning ring 12.

[0026] According to another embodiment of the present invention, the European standard screw terminal structure further includes the head male pin 3 and the screw tail end 5.

[0027] According to another embodiment of the present invention, the European standard welding terminal structure further includes the head male pin 3 and the welding tail end 6.

[0028] According to another embodiment of the present invention, the standard screw-welded terminal includes the terminal assembly 4 and the screw tail end 5.

[0029] According to another embodiment of the present invention, the standard welding terminal structure further includes the terminal assembly 4 and the welding tail end 6.

[0030] In the specific operation process, the European standard terminal connects the male pin 3 at the head to the screw end 5 or the welding end 6 by friction welding. The interface material matches the wire material and is electroplated as a whole. When selected, the screw end 5 is fixed to the copper or aluminum wire by bolts. When selected, the welding end 6 is directly brazed to the wire. The national standard terminal inserts the spring 8 into the receiving cavity 10 of the terminal body 7. The positioning ring 12 is inserted into both ends of the receiving cavity 10. The rotating waist structure of the elastic grid 13 provides radial elastic force to ensure multi-point contact with the plug-in terminal. The positioning part of the pressure cover 9 is aligned with the limiting groove 11 and pressed vertically down until the end of the positioning part 15 abuts against the step surface of the limiting groove 11 of the terminal body 7, thus limiting the displacement of the pressure cover 9, thereby assembling the terminal assembly 4. The short-terminal assembly 4 is connected to the screw end 5 or the welding end 6 by friction welding. The interface material matches the wire material and is electroplated as a whole.

[0031] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A welding terminal structure for a charging interface conforming to Chinese and European standards, characterized in that, It includes a terminal head assembly (1) and a connecting end (2); the terminal head assembly (1) and the connecting end (2) are connected by friction welding; the terminal head assembly (1) is a male head pin (3) or a terminal assembly (4), and the connecting end (2) is a screw tail end (5) or a welding tail end (6); the terminal assembly (4) includes a terminal body (7), a spring (8) and a pressure cap (9), the terminal body (7) is provided with a spring (8) inside, and the front end is locked by the pressure cap (9); the screw tail end (5) is formed by integral cold forging and then riveting threads, and the welding tail end (6) is formed by integral cold forging.

2. The welding terminal structure for charging interfaces according to national and European standards as described in claim 1, characterized in that, The terminal body (7) includes an internal accommodating cavity (10) and a front limiting groove (11); the spring (8) is movably installed in the accommodating cavity (10), and the pressure cap (9) is placed in the front limiting groove (11) of the terminal body (7) and is interference-fitted with the limiting groove (11).

3. The welding terminal structure for charging interfaces according to national and European standards as described in claim 1, characterized in that, The spring (8) has openings at both ends and includes two sets of positioning rings (12) with the same front and rear diameters and an elastic grid (13) in the middle; the elastic grid (13) is provided in several sets, with the two ends respectively connected to the two sets of positioning rings (12), forming a rotating and waist-tight spiral shape; the cover (9) includes a cap (14) and a locking part (15); the cap (14) covers the top of the terminal body (7), the positioning part has the edge of the cap (14) and protrudes downward, the side of the positioning part abuts against the limiting groove (11), and the end abuts against the stepped surface of the terminal body (7).

4. The welding terminal structure for charging interfaces according to national and European standards as described in claim 3, characterized in that, The inner diameter of the cap body (14) is smaller than the diameter of the positioning ring (12).

5. The welding terminal structure for charging interfaces according to national and European standards as described in claim 1, characterized in that, The European standard screw terminal structure includes the head male pin (3) and the screw tail end (5).

6. The welding terminal structure for charging interfaces according to national and European standards as described in claim 1, characterized in that, The European standard welding terminal structure includes the head male pin (3) and the welding tail end (6).

7. The welding terminal structure for charging interfaces according to national and European standards as described in claim 1, characterized in that, The national standard screw-welded terminal includes the terminal assembly (4) and the screw tail end (5).

8. The welding terminal structure for charging interfaces according to national and European standards as described in claim 1, characterized in that, The national standard welding terminal structure includes the terminal assembly (4) and the welding tail end (6).

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