A new round stretch terminal

Abstract

The utility model provides a novel circular stretching terminal, including copper band and the jack body of copper band stretch forming, be equipped with contact spring in the jack body, one end of jack body is equipped with the limiting structure for limiting contact spring, the other end is welded fixed with contact spring, the utility model discloses the contact spring in the jack body is connected with the welding of jack body, reduces the switching resistance, promotes the current -carrying capacity of terminal, through the stretch forming of copper band to the jack body, not only reduces the generation of waste material in the production process, and simplifies production technology, promotes the terminal production efficiency, is suitable for mass production.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a circular terminal. Background Technology

[0002] The market size of high-voltage connectors for new energy vehicles continues to expand with the development of the new energy vehicle industry, and will continue to show a series of positive development trends in the future due to factors such as technological progress and increased market demand. Initially, power terminals were mainly circular, and the sockets were mostly machined from copper rods. This processing method was inefficient and costly. Furthermore, the traditional method of fixing the circular terminals and wires by screw crimping resulted in uneven pressure and a tendency to loosen.

[0003] Chinese utility model patent CN222072233U, published on November 26, 2024, discloses an elbow terminal and connector. The elbow terminal includes a plug-in portion and a first flat plate connecting portion, which are integrally formed. The plug-in portion has a plug-in cavity configured to plug into the plug-in end of a device to be connected. The first flat plate connecting portion is configured to be welded to a cable to be connected. The plug-in end of the device to be connected and the cable to be connected are not on the same straight line and need to be electrically connected. The elbow terminal also includes a contact element. A mounting groove is provided in the plug-in cavity, and the contact element is snapped into the mounting groove. The plug-in end of the device to be connected is electrically connected to the plug-in portion through the contact element. The contact element includes a spring. However, the patent does not specify the specific snap-in structure, which may lead to micro-friction between the spring element and the terminal conductor (copper alloy), resulting in a high switching resistance. Summary of the Invention

[0004] To address the aforementioned technical problems, this utility model proposes a novel circular stretchable terminal to solve the problem that the spring installation method inside the circular terminal in the prior art may lead to high transfer resistance.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A novel circular stretchable terminal includes a copper strip and a socket body formed by stretching the copper strip. A contact spring is provided inside the socket body. One end of the socket body has a limiting structure for limiting the contact spring, and the other end is welded and fixed to the contact spring. The contact spring in the socket body of this invention is welded to the socket body, reducing the transfer resistance and improving the terminal's current carrying capacity. The socket body is formed by stretching the copper strip, which not only reduces waste during production but also simplifies the production process, improves terminal production efficiency, and is suitable for mass production.

[0007] Furthermore, the socket body is a cylindrical body with open ends.

[0008] Furthermore, in order to limit the contact spring, the limiting structure includes a plurality of bosses arranged at equal angles at the opening of the socket body, and the bosses extend radially inward.

[0009] Furthermore, in order to quickly form the first boss, the first boss is a stamped boss formed by stamping the opening of the insertion hole.

[0010] Furthermore, to improve the stability of the contact spring, the contact spring is welded to the socket body via a circular welding line.

[0011] Furthermore, the contact spring is a torsion spring, leaf spring, snap ring, or helical spring.

[0012] Furthermore, the copper strip is bent to form a "Z" shaped structure.

[0013] Furthermore, the "Z"-shaped structure includes a flat plate connected to the end of the socket body and a welding plate parallel to the flat plate, with the flat plate area connected to the welding plate via an inclined transition plate.

[0014] Furthermore, in order to offset the welding plate from the flat plate, the included angles between the transition plate and the flat plate and the welding plate are all obtuse angles.

[0015] Furthermore, the flat plate forms a second boss on the outer periphery of the end of the socket body.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model reduces the switching resistance and improves the current carrying capacity of the terminals by welding the torsion spring to the socket body;

[0018] 2. The insertion hole body of this utility model is provided with a boss to limit the assembly of the torsion spring, so that the torsion spring is installed in an accurate position.

[0019] 3. This utility model improves terminal production efficiency by stretching copper strips to form the insertion hole body, making it suitable for mass production. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of the present invention. Figure 2 .

[0024] In the diagram: 1-Welding line; 2-Plate; 3-Transition plate; 4-Welding plate; 5-Socket body; 6-Torsion spring; 7-Boss 1. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 As shown in Embodiment 1 of this utility model, a novel circular stretchable terminal includes a copper strip and a socket body 5 formed by stretching on the copper strip. That is, the socket body 5 is formed on the copper strip by stretching. This stretching method can reduce waste generation during production, simplify the production process, improve production efficiency, and reduce terminal costs. In this embodiment, the socket body 5 is a cylindrical body open at both ends. A contact spring is provided inside the socket body 5. Figure 2 As shown, one end of the socket body 5 is provided with a limiting structure for limiting contact. Figure 1 As shown, the other end of the socket body 5 is welded and fixed to the end of the contact spring. Welding and fixing the end of the contact spring to the socket body avoids fretting friction between the two, which can reduce the switching resistance and improve the current carrying capacity of the terminal.

[0027] Furthermore, such as Figure 1 As shown, the contact spring is welded and fixed to the socket body 5 by a full circle of annular welding line 1, so that the contact spring and the socket body 5 are connected as a whole.

[0028] Furthermore, the contact spring is a torsion spring 6, a leaf spring, a snap ring, or a helical spring. In this embodiment, the contact spring is a torsion spring 6.

[0029] Example 2 differs from Example 1 in that, as Figure 2 As shown, the limiting structure includes several protrusions 7 arranged at equal angles at the opening of the socket body 5. Figure 3 As shown, boss 7 extends radially inward. Furthermore, boss 7 is a stamped boss formed by stamping the opening of the insertion hole body 5 inward.

[0030] Example 3 differs from Example 1 in that the copper strip is bent to form a "Z" shaped structure, and the end of the "Z" shaped structure is the welding area.

[0031] Furthermore, the "Z"-shaped structure includes a flat plate 2 connected to the end of the socket body 5 and a welding plate 4 parallel to the flat plate 2, the welding plate 4 being the welding area. The flat plate area 2 is connected to the welding plate 4 via an inclined transition plate 3, forming a "Z"-shaped structure.

[0032] Furthermore, the angle between the transition plate 3 and the flat plate 2 and welding plate 4 is an obtuse angle. In the punched and bent "Z"-shaped structure, one end of the transition plate 3 is connected to the flat plate 2 via a transition arc, the end of the transition plate 3 away from the flat plate 2 is inclined in a direction away from the flat plate 2, and the end of the transition plate 3 away from the flat plate 2 is connected to the welding plate 4 via a transition arc. The flat plate area 2, the transition plate 3, and the welding plate 4 are an integrated structure. The obtuse angle between the transition plate 3 and the flat plate 2 and welding plate 4 allows the flat plate 2 and welding plate 4 to be completely offset, which not only facilitates installation but also does not affect the welding of the welding plate 4.

[0033] Example 4 differs from Example 3 in that, as Figure 3 As shown, the plate 2 forms a second boss on the outer periphery of the end of the socket body 5. The axis of the socket body 5 is perpendicular to the plate 2. The plate 2 forms an outer edge at the end of the socket body 5; this outer edge is the second boss, which is the outer edge left at the opening of the socket body 5 after the steel strip is stretched to form the socket body 5. This second boss facilitates stable positioning and installation of the terminal by being pressed against the limiting structure in the connector.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features therein, within the spirit and principles of the present utility model, shall not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model, and shall all be included within the protection scope of the present utility model.

Claims

1. A novel circular stretchable terminal, characterized in that, It includes a copper strip and a socket body (5) formed by stretching on the copper strip. The socket body (5) is provided with a contact spring. One end of the socket body (5) is provided with a limiting structure for limiting the contact spring, and the other end is welded and fixed to the contact spring.

2. The novel circular stretchable terminal according to claim 1, characterized in that, The socket body (5) is a cylindrical body with open ends.

3. The novel circular stretching terminal according to claim 1 or 2, characterized in that, The limiting structure includes several bosses (7) arranged at equal angles at the opening of the insertion body (5), and the bosses (7) extend radially inward.

4. The novel circular stretchable terminal according to claim 3, characterized in that, The boss 1 (7) is a stamped boss formed by stamping the opening of the insertion hole body (5).

5. The novel circular stretching terminal according to claim 1, 2, or 4, characterized in that, The contact spring is welded to the socket body (5) via an annular welding line (1).

6. The novel circular stretching terminal according to claim 1, 2, or 4, characterized in that, The contact spring is a torsion spring (6), a leaf spring, a snap ring, or a helical spring.

7. The novel circular stretching terminal according to claim 1, 2, or 4, characterized in that, The copper strip is bent to form a "Z" shaped structure.

8. The novel circular stretchable terminal according to claim 7, characterized in that, The "Z"-shaped structure includes a flat plate (2) connected to the end of the socket body (5) and a welding plate (4) parallel to the flat plate (2). The flat plate (2) is connected to the welding plate (4) through an inclined transition plate (3).

9. The novel circular stretchable terminal according to claim 8, characterized in that, The angles between the transition plate (3) and the flat plate (2) and the welding plate (4) are all obtuse angles.

10. The novel circular stretchable terminal according to claim 9, characterized in that, The plate (2) forms a boss on the outer periphery of the end of the insertion body (5).

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