Terminal with composite welding elastic sheet

Abstract

The utility model provides a terminal with a composite welding elastic sheet, which comprises a terminal main body, the terminal main body comprises a connecting cavity used for forming electric connection and an elastic sheet wrapped on the outer side of the terminal main body and fixed through welding, the elastic sheet comprises a first bending part and a second bending part, and the first bending part is connected with the second bending part. The first bending part is arranged at the front end of the elastic sheet, the second bending part is arranged at the position, close to the rear end, of the elastic sheet, and the first bending part and the second bending part are bent and extend into the terminal main body to form abutting limiting with the terminal main body. Aiming at the defects in the prior art, the utility model provides the terminal with the composite welding elastic sheet, which has excellent conductivity and wear resistance and is elastic.

Description

Technical Field

[0001] This utility model relates to the field of terminals, and in particular to a terminal with a composite welding spring. Background Technology

[0002] In the field of electrical connections, terminals are the core components for realizing circuit conduction and signal transmission. Their connection reliability, insertion and removal life, assembly accuracy and error prevention capability directly affect the operational stability and safety of the entire electrical system. With the continuous improvement of industrial automation, various electrical equipment have increasingly stringent performance requirements for terminals. Especially in application scenarios with high frequency insertion and removal, high vibration and high precision assembly, traditional terminals have gradually become unable to meet the usage requirements.

[0003] Existing terminals often employ a single-material, one-piece molding structure, using only copper or copper alloys with excellent conductivity. This results in inherent shortcomings in elasticity and wear resistance, leading to problems such as elastic fatigue and poor contact after prolonged insertion and removal, severely impacting connection reliability and service life. Some terminals also incorporate spring clips, but the connection between the spring clips and the terminal body is typically via snap-fit ​​or riveting, which can cause positioning deviations during assembly. This not only reduces the precision and efficiency of automated production but also may lead to loosening due to vibration or other factors during long-term use, resulting in unstable connections. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a terminal with a composite welding spring that combines excellent conductivity, wear resistance, and elasticity.

[0005] To achieve the above objectives, this utility model provides a terminal with a composite welding spring, comprising a terminal body, the terminal body including a connecting cavity for forming an electrical connection, and a spring wrapped around the outside of the terminal body and fixed by welding. The spring includes a first bending portion and a second bending portion, the first bending portion being disposed at the front end of the spring, and the second bending portion being disposed near the rear end of the spring, and both the first bending portion and the second bending portion are bent and extended into the terminal body to form an abutment and limiting contact with it.

[0006] The advantages of the above technical solution are as follows: by wrapping the outer side of the terminal body with a fixed spring sheet formed by welding, and combining the first bent part at the front end of the spring sheet with the second bent part near the rear end to bend into the terminal body to form a contact limiting setting, the structural fit and joint force-bearing performance of the spring sheet and the terminal body can be enhanced by welding and the contact limiting setting of the double bent parts. Furthermore, the terminal body can be made of copper-nickel-silicon material with excellent conductivity, while the spring sheet can be made of high-strength stainless steel material. Utilizing its high elasticity and wear resistance, the insertion and removal life of the terminal can be greatly improved, meeting the usage requirements of harsh application scenarios such as high-frequency insertion and removal and high vibration.

[0007] The present invention can be further configured such that: the spring sheet includes elastic portions disposed on both sides, one end of the elastic portion is connected to the front end of the spring sheet, the elastic portion extends in the length direction corresponding to the terminal body, and the other end of the elastic portion extends obliquely in the direction away from the terminal body.

[0008] By further designing elastic portions on both sides of the spring, one end of the elastic portion is connected to the front end of the spring, while the other end extends along the length of the terminal body and tilts away from the terminal body. During the insertion of the terminal into the mating part, the elastic portion gradually compresses and generates a noticeable change in resistance. The operator can clearly perceive the insertion status through touch, forming a identifiable insertion feedback. After insertion, the rebound force of the elastic portion can continuously apply a clamping force, making the terminal and the mating part tightly engaged, effectively limiting the axial displacement of the terminal, achieving reliable position holding and anti-retraction effects, and avoiding the problem of loosening and retraction of the pin under vibration conditions. Finally, when disassembly and maintenance are required, only a directional force needs to be applied to cause the elastic portion to undergo adaptive deformation, releasing the locking limit. The entire process does not require special tools, is simple to operate, and will not cause damage to the terminal and the mating part, thus allowing for safe disassembly and maintenance operations.

[0009] The present invention can be further configured such that: the spring sheet includes a plurality of anti-misalignment ribs, the plurality of anti-misalignment ribs are respectively disposed on both sides of the spring sheet, and the anti-misalignment ribs extend in the length direction corresponding to the terminal body.

[0010] By further designing the spring clip, several anti-foolproof ribs extending along the length of the terminal body on both sides can form a precise guiding and limiting fit with the mating structure of the mating part. In automated assembly or manual operation, this can directly avoid situations such as reverse assembly or misaligned assembly of the terminals, greatly improving the accuracy and efficiency of assembly.

[0011] The present invention can be further configured such that: the terminal body includes a plurality of contact bubbles located in the connection cavity, the plurality of contact bubbles are respectively disposed on both sides of the connection cavity and are arranged in a convex shape facing each other, and the contact bubble includes a contact surface, the contact surface being arranged in a tapered shape that gradually decreases towards the center.

[0012] By further designing the connection cavity, several contact bubbles are protruding on both sides, with their contact surfaces forming a tapered structure that gradually decreases in size towards the center. When the terminal is inserted into the mating part, the tapered surface can pierce the oxide layer of the mating part, ensuring the quality of the contact and the stability of current and signal transmission. The multiple sets of symmetrically distributed contact bubbles can form a multi-point contact structure. Even under long-term insertion and removal or vibration conditions, if some contact points experience slight wear, the remaining contact points can still maintain stable conductivity, greatly improving the connection reliability and service life of the terminal.

[0013] The present invention can be further configured such that: the terminal body includes a wiring portion located at the rear end, the wiring portion is provided with a front pressure foot and a rear pressure foot extending to both sides, and the front pressure foot is provided with a wire reinforcing rib.

[0014] By further designing the front and rear pressure feet of the terminal body's rear wiring section, the wires can be double-clamped and fixed, significantly improving the connection strength between the wires and the wiring section. This prevents the wires from loosening or falling off under conditions of vibration or pulling. At the same time, the additional wire reinforcing ribs at the front pressure feet further enhance the limiting effect on the wires, distribute the force on the crimping part, reduce damage to the wires during crimping operations, and ensure the stability of current transmission.

[0015] The present invention can be further configured such that: the terminal body includes a strip located at the rear end, and the strip is provided with a plurality of positioning holes arranged at intervals.

[0016] By further designing several positioning holes spaced apart on the rear strip of the terminal body, the positioning holes provide precise reference positioning for the continuous stamping and forming of the terminal during the stamping manufacturing stage. This effectively eliminates the cumulative errors caused by multi-process stamping and achieves micron-level precision control of the terminal dimensions. In the automated assembly stage, the positioning holes can precisely cooperate with the positioning pins of the automated equipment to ensure that the terminal is stably transported to the center position of the crimping die, avoiding crimping defects caused by positioning deviations. Finally, the positioning holes can also serve as a window for production status monitoring and quality traceability. By linking with the production traceability system, key process parameters such as stamping and crimping of the terminal can be recorded, facilitating rapid investigation and tracing of subsequent quality problems and comprehensively improving the standardization and controllability of terminal production. Attached Figure Description

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2 This is a top view of an embodiment of the present utility model;

[0019] Figure 3 This is an embodiment of the present utility model. Figure 2 Sectional view at point AA;

[0020] Figure 4 This is a schematic diagram of the spring sheet structure in an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the front end of the terminal body in an embodiment of this utility model;

[0022] The components include: terminal body 1; connecting cavity 11; contact bubble 12; contact surface 121; wiring part 13; front pressure foot 131; rear pressure foot 132; wire reinforcing rib 133; material strip 14; positioning hole 141; spring piece 2; first bending part 21; second bending part 22; elastic part 23; anti-foolproof rib 24; and solder joint 25. Detailed Implementation

[0023] An embodiment of this utility model of a terminal with a composite welding spring is shown below. Figure 1-5 As shown: It includes a terminal body 1, which includes a connecting cavity 11 for forming an electrical connection, and a spring piece 2 that is wrapped around the outside of the terminal body 1 and fixed by welding. Three solder points 25 are formed on the spring piece 2 at intervals along its length. The spring piece 2 includes a first bending portion 21 and a second bending portion 22. The first bending portion 21 is located at the front end of the spring piece 2, and the second bending portion 22 is located near the rear end of the spring piece 2. Both the first bending portion 21 and the second bending portion 22 are bent and extended into the terminal body 1 to form an abutment and limit with it.

[0024] The spring 2 includes elastic portions 23 located on both sides. One end of the elastic portion 23 is connected to the front end of the spring 2. The elastic portion 23 extends in the length direction corresponding to the terminal body 1, and the other end of the elastic portion 23 extends obliquely away from the terminal body 1.

[0025] The spring piece 2 includes a plurality of anti-mistake ribs 24, which are respectively disposed on both sides of the spring piece 2 and extend in the length direction corresponding to the terminal body 1.

[0026] The terminal body 1 includes a plurality of contact bubbles 12 located in the connection cavity 11. The plurality of contact bubbles 12 are respectively disposed on both sides of the connection cavity 11 and are arranged in a convex shape facing each other. Each contact bubble 12 includes a contact surface 121, which is arranged in a tapered shape that gradually decreases towards the center.

[0027] The terminal body 1 includes a wiring portion 13 located at the rear end. The wiring portion 13 is provided with a front pressure foot 131 and a rear pressure foot 132 extending to both sides. The front pressure foot 131 is provided with a wire reinforcing rib 133.

[0028] The terminal body 1 includes a strip 14 located at the rear end, and the strip 14 is provided with a plurality of positioning holes 141 arranged at intervals.

[0029] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A terminal with a composite solder wad, comprising a terminal body, said terminal body comprising a connecting cavity for constituting an electrical connection, characterized in that: It includes a spring sheet that is wrapped around the outside of the terminal body and fixed by welding. The spring sheet includes a first bending portion and a second bending portion. The first bending portion is located at the front end of the spring sheet, and the second bending portion is located near the rear end of the spring sheet. Both the first bending portion and the second bending portion are bent and extended into the terminal body to form an abutment and limit with it.

2. The terminal with composite welding spring as claimed in claim 1, wherein: The spring includes elastic portions on both sides. One end of the elastic portion is connected to the front end of the spring, and the elastic portion extends along the length direction of the terminal body. The other end of the elastic portion extends obliquely away from the terminal body.

3. The terminal with a composite welding spring according to claim 1 or 2, characterized in that: The spring includes several anti-misalignment ribs, which are respectively disposed on both sides of the spring and extend along the length of the corresponding terminal body.

4. The terminal with composite welding spring according to claim 1 or 2, characterized in that: The terminal body includes a plurality of contact bubbles located in the connection cavity. The plurality of contact bubbles are respectively disposed on both sides of the connection cavity and are arranged in a convex shape facing each other. Each contact bubble includes a contact surface, which is arranged in a cone shape that gradually decreases in size towards the center.

5. The terminal with a composite welding spring piece according to claim 1 or 2, characterized in that: The terminal body includes a wiring portion located at the rear end, and the wiring portion is provided with a front pressure foot and a rear pressure foot extending to both sides, and the front pressure foot is provided with a wire reinforcing rib.

6. The terminal with a composite welding spring piece according to claim 1 or 2, characterized in that: The terminal body includes a strip located at the rear end, and the strip is provided with a number of positioning holes arranged at intervals.

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