Stamping terminal and electric connection assembly

Abstract

The utility model relates to a stamping terminal and an electric connection assembly. The stamping terminal is provided with a hollow cylinder and a wiring part. The cylinder body is in a straight cylinder shape formed by rolling a sheet, an elastic cantilever and a fool-proof protrusion are arranged on the periphery of the cylinder body, the elastic cantilever and the fool-proof protrusion are formed by outwards folding the cylinder wall after the cylinder wall is punctured, and the fool-proof protrusion is located right in front of the elastic cantilever. The electric connection assembly comprises an insulating main body and a stamping terminal, a cylinder body of the stamping terminal is inserted into the terminal hole from the rear end of the insulating main body, and the elastic cantilever is guided to slide into the guide groove through cooperation of the fool-proof bulge and the guide groove; when assembly is in place, anti-falling clamping connection is established through the elastic cantilever and the hanging table; a gap is reserved between the inner bottom of the guide groove and the fool-proof protrusion, and the gap meets the requirement that an imbedding tool presses the elastic cantilever, so that the elastic cantilever can be unclamped from the hanging table. The stamping terminal is of an integrated structure, the structure is stable, rapid assembly can be achieved, the manufacturing and assembling cost is reduced, and after installation, the contact area is large, contact resistance is low, falling is not likely to happen, and replacement can be carried out.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection component technology, and in particular to circular connectors, aviation connectors, wire harnesses, etc. for wire-to-wire or wire-to-board connections. Background Technology

[0002] Terminals are connecting elements in electronic and electrical components. Due to their crucial role in circuit connections, they have a wide range of applications, such as circular connectors for wire-to-wire or wire-to-board connections, aviation connectors, and wire harnesses. As electrical components become increasingly integrated and smaller, higher requirements are placed on the structural performance, usability, and assembly performance of terminals. Summary of the Invention

[0003] The purpose of this utility model is to provide a stamped terminal with an integrated structure that is stable, reliable, easy to assemble and implement, and has good self-protection.

[0004] Another objective of this utility model is to provide an electrical connection component that uses the aforementioned stamped terminals, enabling rapid assembly, reducing manufacturing and assembly costs, and providing a large contact area, low contact resistance, and resistance to easy detachment after installation, while also allowing for easy replacement.

[0005] To achieve the above objectives, this utility model provides a stamped terminal having a hollow cylindrical body and a wiring portion extending rearward from the rear end of the cylindrical body.

[0006] The cylindrical body is a straight cylinder formed by rolling a sheet into a circle. The front end of the cylindrical body is provided with a plug interface that allows male terminals to be inserted and form electrical contact. On the outer periphery of the cylindrical body, there are elastic cantilever arms and anti-mistake protrusions formed by the outward folding after the cylinder wall is punctured. The folded end of the elastic cantilever arms faces the rear end of the cylindrical body, while the anti-mistake protrusions are located directly in front of the elastic cantilever arms, and the folding height of the anti-mistake protrusions is less than the folding height of the elastic cantilever arms.

[0007] The above solution is further described in that the peripheral wall of the insertion interface is divided into multiple claw plates that converge towards each other, and the multiple claw plates together clamp the male terminal that is inserted; the elastic cantilever and the foolproof protrusion are embedded between two adjacent claw plates.

[0008] A further improvement of the above scheme is that the rear end of the cylindrical body is provided with a rear cover that bends from the cylindrical wall of the cylindrical body to cover the rear port of the cylindrical body, and the rear cover separates the cylindrical body from the wiring part.

[0009] To achieve the above objectives, this utility model provides an electrical connection assembly, which includes an insulating body and the aforementioned stamped terminal.

[0010] The insulating body has a front end, a rear end, and a terminal hole that passes through the front end and the rear end. The diameter of the terminal hole matches the outer diameter of the cylindrical body of the stamped terminal. A recessed guide groove is provided on the inner wall of the terminal hole. The guide groove and the terminal hole pass through the front end and the rear end of the insulating body. The recessed depth of the guide groove is greater than the folding height of the anti-fooling protrusion. A raised mounting platform is provided in the middle section of the guide groove. The snap-fit ​​side of the mounting platform faces the front end of the insulating body.

[0011] The cylindrical body of the stamped terminal is inserted into the terminal hole from the rear end of the insulating body, and the elastic cantilever is guided into the guide groove by the cooperation of the anti-fooling protrusion and the guide groove. When the stamped terminal is assembled in place, the elastic cantilever and the mounting platform are connected to prevent disengagement. The gap between the inner bottom of the guide groove and the anti-fooling protrusion is sufficient for the insertion tool to press the elastic cantilever, so that the elastic cantilever can be disengaged from the mounting platform.

[0012] A further improvement in the above scheme is that the snap-fit ​​position between the elastic cantilever and the mounting platform satisfies the requirement that a portion of the wiring portion of the stamped terminal is embedded in the terminal hole.

[0013] A further aspect of the above scheme is that the terminal hole is designed as an inwardly recessed entrance at the front end of the insulating body, with the entrance directly opposite the insertion interface. The diameter of the entrance is at least the same as the diameter of the insertion interface, and a limiting step is formed on the inner side of the entrance. This limiting step is used to stop the front end of the cylindrical body and limit the insertion depth of the cylindrical body.

[0014] Furthermore, the electrical connection component described above is a circular connector, an aviation connector, or a wire harness.

[0015] This utility model features a scientifically sound and reasonable structure with low investment costs. The cylindrical body and wiring section are manufactured as a single unit. The cylindrical body is a straight cylinder formed by rolling sheet material, ensuring structural stability and reliability, and facilitating assembly. The front end of the cylindrical body has a plug-in interface that allows male terminals to be inserted and form electrical contact. This interface has a large contact area and low contact resistance. Furthermore, the peripheral wall of the plug-in interface is divided into multiple claw-like pieces that converge towards each other. These claw-like pieces together clamp the inserted male terminal, increasing connection stability and ensuring electrical conductivity. The outer periphery of the cylindrical body features elastic cantilevered arms and anti-misalignment protrusions created by the outward folding of the punctured cylindrical wall. These anti-misalignment protrusions provide assembly guidance and facilitate easy alignment, thus preventing misalignment and protecting the terminals from deformation due to incorrect insertion. The rear end of the cylindrical body is provided with a rear cover that bends from the cylindrical wall to cover the rear port of the cylindrical body. The rear cover separates the cylindrical body from the wiring part, effectively preventing external dust, debris and other objects from entering the interior of the cylindrical body. In addition, when the product needs to be glued, it can also prevent glue from flowing into the interior of the cylindrical body, providing good self-protection.

[0016] The cylindrical body of the stamped terminal is inserted into the terminal hole from the rear end of the insulating body. The elastic cantilever is guided into the guide groove by the cooperation of the anti-fooling protrusion and the guide groove, which can achieve rapid assembly and reduce manufacturing and assembly costs. When the stamped terminal is assembled, the elastic cantilever and the mounting platform establish an anti-disengagement engagement, which is not easy to fall off and ensures a stable connection between the terminal and the insulating body, while also increasing the insertion and extraction force. The gap between the inner bottom of the guide groove and the anti-fooling protrusion allows the insertion tool to press the elastic cantilever, so that the elastic cantilever can be released from the mounting platform. This allows the terminal to be removed for maintenance or replacement, improving practicality. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the stamped terminal structure of this utility model;

[0018] Appendix Figure 2 for Figure 1 Another perspective structural diagram of the embodiment;

[0019] Appendix Figure 3 This is a schematic diagram of the electrical connection component assembly structure of this utility model;

[0020] Appendix Figure 4 for Figure 3 Schematic diagram of the insulating main structure of the embodiment;

[0021] Appendix Figure 5 for Figure 3 A schematic diagram of the assembled structure of the embodiment;

[0022] Appendix Figure 6 for Figure 3 Cross-sectional view of the internal structure after assembly in the embodiment. Detailed Implementation

[0023] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0024] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0025] See Figure 1 , 2 Figures 3, 4, 5, and 6 are schematic diagrams of a preferred embodiment of the present invention, which relates to a stamped terminal and an electrical connection assembly using the stamped terminal.

[0026] Figure 1 , 2 As shown, the stamped terminal 2 in this embodiment is integrally formed by cutting and stamping conductive material. The stamped terminal 2 has a hollow cylindrical body 21 and a wiring portion 22 extending rearward from the rear end of the cylindrical body 21. The wiring portion 22 is preferably a riveting structure with multiple riveting pieces to wrap and rivet the connecting wire 3, thereby achieving a conductive connection between the stamped terminal 2 and the wire 3. The cylindrical body 21 is a straight cylinder formed by rolling sheet material, which effectively improves structural strength and stability and extends the service life of the insertion. At the front end of the cylindrical body 21, there is a plug interface 211 that allows the male terminal to be inserted and form an electrical contact. The contact area is large and the contact resistance is low, which is conducive to electrical conduction and transmission. An elastic cantilever 212 and a foolproof protrusion 213 are provided on the outer periphery of the cylindrical body 21, which are formed by the outward folding after the cylindrical wall is punctured. The folded end of the elastic cantilever 212 faces the rear end of the cylindrical body 21, while the foolproof protrusion 213 is located directly in front of the elastic cantilever 212, and the folding height of the foolproof protrusion 213 is less than the folding height of the elastic cantilever 212. The foolproof protrusion 213 has assembly guidance and is easy to observe and align, which facilitates assembly and prevents the terminals from deforming due to incorrect insertion.

[0027] Furthermore, the peripheral wall of the insertion interface 211 is divided into multiple claw plates 214 that converge inwards. In this embodiment, the claw plates 214 are designed with corresponding bends, such as the middle section of the claw plate 214 being inwardly tapered while the front end of the claw plate 214 is outwardly flared in a trumpet shape. This provides better clamping elasticity and facilitates the insertion of the male terminal, achieving the effect of low insertion force. The multiple claw plates 214 together clamp the inserted male terminal, increasing the stability of the insertion and ensuring electrical conductivity. The elastic cantilever 212 and the anti-misalignment protrusion 213 are embedded between two adjacent claw plates 214 and connected by the corresponding cylindrical wall. This structure is easy to manufacture. In this embodiment, it is preferable that the position of the elastic cantilever 212 and the anti-misalignment protrusion 213 on the cylindrical wall forms an upper and lower relative relationship with the rolled joint line of the cylindrical body 21, thereby obtaining better structural integrity of the elastic cantilever 212 and the anti-misalignment protrusion 213 and improving the efficiency of use.

[0028] Furthermore, the rear end of the cylindrical body 21 is provided with a rear cover 215 that bends from the cylindrical wall of the cylindrical body 21 to cover the rear port of the cylindrical body 21. The rear cover 215 separates the cylindrical body 21 from the wiring part 22. The rear cover 215 is integrally manufactured with the stamped terminal. By bending, it precisely covers the rear port of the cylindrical body, effectively preventing external dust, debris, etc. from entering the interior of the cylindrical body. Moreover, if the product needs to be glued, it can also prevent glue from flowing into the interior of the cylindrical body, providing good self-protection and ensuring that the cylindrical body 21 can be properly inserted and used.

[0029] Figure 1 , 2As shown in Figures 3, 4, 5, and 6, the present invention provides an electrical connection assembly, preferably a circular connector, an aviation connector, or a wire harness, which includes an insulating body 1 and the aforementioned stamped terminal 2. The insulating body 1 has a front end 11, a rear end 12, and a terminal hole 13 passing through the front end and the rear end. The diameter of the terminal hole 13 matches the outer diameter of the cylindrical body 21 of the stamped terminal 2, facilitating the insertion of the cylindrical body 21 and obtaining effective support. A recessed guide groove 131 is provided on the inner wall of the terminal hole 13. The guide groove 131, together with the terminal hole 13, passes through the front end and the rear end of the insulating body. In this embodiment, the guide groove 131 is a U-shaped groove extending from the inner wall of the terminal hole 13. The recessed depth of the guide groove 131 is greater than the folding height of the anti-foolproof protrusion 213, and a raised mounting platform 132 is provided in the middle section of the guide groove 131. The snap-fit ​​side of the mounting platform faces the front end of the insulating body. The wiring portion of the stamped terminal 2... After the 22 is connected to the conductor 3, the cylindrical body 21 of the stamped terminal 2 is inserted into the terminal hole 13 from the rear end 12 of the insulating body 1. During assembly, the direction is determined by the anti-misalignment protrusion 213, ensuring that the anti-misalignment protrusion 213 is aligned with the guide groove 131. At this time, the anti-misalignment protrusion 213 and the guide groove 131 cooperate to guide the elastic cantilever 212 into the guide groove 131. When the anti-misalignment protrusion 213 is inserted, it is guided and corrected by the guide groove 131, making the assembly of the stamped terminal 2 smoother and faster. When the stamped terminal 2 is assembled in place, the elastic cantilever 212 and the mounting platform 132 establish an anti-disengagement engagement, making it difficult to fall off, ensuring a stable connection between the stamped terminal and the insulating body, providing good support for the stamped terminal, and increasing the insertion and extraction force. The gap A between the inner bottom of the guide groove 131 and the anti-fooling protrusion 213 is sufficient to allow the insertion tool to press the elastic cantilever 212, so that the elastic cantilever 212 can be disengaged from the mounting plate 132. This allows the terminal to be removed for maintenance or replacement, improving the practicality of the electrical connection assembly.

[0030] In this embodiment, the engagement position of the elastic cantilever 212 and the mounting platform 132 ensures that a portion of the wiring portion 22 of the stamped terminal 2 is inserted into the terminal hole 13. This allows the insulating body 1 to further protect and reinforce the connection between the wiring portion 22 and the wire 3, improving the usability of the electrical connection assembly. The terminal hole 13 is located at the front end 11 of the insulating body 1 and is designed as an inwardly recessed inlet 133. The diameter of the inlet 133 is at least the same as the diameter of the plug-in interface 211, and the inlet 133 is directly opposite the plug-in interface 211, ensuring accurate and stable insertion of the male terminal. A limiting step 134 is formed inside the inlet 133. This limiting step 134 is used to stop the front end of the cylindrical body 21, limiting the insertion depth of the cylindrical body 21. This structure enables rapid assembly, reduces manufacturing and assembly costs, and after installation, the stamped terminal has a large contact area, low contact resistance, is not easily detached, and can be replaced.

[0031] While the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention should not be limited to the same structure and operation as described above and the accompanying drawings. For those skilled in the art, many equivalent improvements and variations can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention, but these improvements and variations should all fall within the scope of protection claimed by the present invention.

Claims

1. A stamped terminal, characterized in that, The stamped terminal (2) has a hollow cylindrical body (21) and a wiring portion (22) extending rearward from the rear end of the cylindrical body (21). The cylindrical body (21) is a straight cylinder formed by rolling a sheet. The front end of the cylindrical body (21) is provided with a plug interface (211) that allows male terminals to be inserted and form electrical contact. On the outer periphery of the cylindrical body (21), there is an elastic cantilever (212) and a foolproof protrusion (213) formed by folding outward after the cylinder wall is punctured. The folded end of the elastic cantilever (212) faces the rear end of the cylindrical body (21), while the foolproof protrusion (213) is located in front of the elastic cantilever (212), and the folding height of the foolproof protrusion (213) is less than the folding height of the elastic cantilever (212).

2. A stamped terminal according to claim 1, characterized in that, The peripheral wall of the insertion interface (211) is divided into multiple claw plates (214) that converge towards each other, and the multiple claw plates (214) together clamp the male terminal that is inserted; the elastic cantilever (212) and the foolproof protrusion (213) are embedded between two adjacent claw plates (214).

3. A stamped terminal according to claim 1, characterized in that, The rear end of the cylindrical body (21) is provided with a rear cover (215) that bends from the cylindrical wall of the cylindrical body (21) to cover the rear port of the cylindrical body. The rear cover (215) separates the cylindrical body (21) from the wiring part (22).

4. An electrical connection assembly, characterized in that, It includes an insulating body (1) and a stamped terminal (2) of any one of claims 1 to 3 above. The insulating body (1) has a front end (11), a rear end (12) and a terminal hole (13) that passes through the front end and the rear end. The diameter of the terminal hole (13) matches the outer diameter of the cylindrical body (21) of the stamped terminal (2). A recessed guide groove (131) is provided on the inner side wall of the terminal hole (13). The guide groove (131) and the terminal hole (13) pass through the front end and the rear end of the insulating body. The recessed depth of the guide groove (131) is greater than the folding height of the anti-fooling protrusion (213). A raised mounting platform (132) is provided in the middle section of the guide groove (131). The snap-fit ​​side of the mounting platform faces the front end of the insulating body. The cylindrical body (21) of the stamped terminal (2) is inserted into the terminal hole (13) from the rear end head (12) of the insulating body (1), and the elastic cantilever (212) is guided into the guide groove (131) through the cooperation of the anti-fooling protrusion (213) and the guide groove (131); when the stamped terminal (2) is assembled in place, the elastic cantilever (212) and the mounting plate (132) are connected to prevent disengagement; the gap (A) between the inner bottom of the guide groove (131) and the anti-fooling protrusion (213) is sufficient for the insertion tool to press the elastic cantilever (212) so that the elastic cantilever (212) can be disengaged from the mounting plate (132).

5. An electrical connection assembly according to claim 4, characterized in that, The engagement position of the elastic cantilever (212) and the mounting plate (132) satisfies that a portion of the wiring part (22) of the stamped terminal (2) is implanted into the terminal hole (13).

6. An electrical connection assembly according to claim 4, characterized in that, The terminal hole (13) is located at the front end (11) of the insulating body (1) and is designed as an inwardly recessed inlet (133). The inlet (133) is directly opposite the plug interface (211). The diameter of the inlet (133) is at least the same as the diameter of the plug interface (211), and a limiting step (134) is formed on the inner side of the inlet (133). The limiting step (134) is used to stop the front end of the cylindrical body (21) and limit the insertion depth of the cylindrical body (21).

7. An electrical connection assembly according to claim 4, characterized in that, The electrical connection component is a circular connector, an aviation connector, or a wire harness.

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