Fisheye terminal for stable welding-free connection and connector

Abstract

The utility model relates to a fisheye terminal and a connector for stabilizing welding-free connection, the fisheye terminal comprises a connecting part, a base part arranged at one end of the connecting part, an elastic part and a pin part, the elastic part comprises two arc-shaped camber beams which are symmetrically arranged, one end of each camber beam is connected with the base part, and the other end of each camber beam is connected with the pin part. One end of the fisheye terminal is connected with the base part, the other end of the fisheye terminal is connected with the pin part, a fisheye hole is formed between the two camber beams, continuous clamping grooves are formed in the camber beams and the outer side wall of the base part in the bending direction of the camber beams and the outer side wall of the base part, and when the fisheye terminal is inserted into a through hole in a circuit board, the side wall of the through hole in the circuit board is clamped with the clamping grooves. Compared with the prior art, the clamping grooves are creatively designed in the elastic parts of the fisheye terminals, and the clamping grooves abut against the inner walls of the through holes to support the circuit board, so that the fisheye terminals have stable holding force and electrical performance requirements in the circuit board, unstable connection between the fisheye terminals and the circuit board is avoided, and signals and current can be reliably transmitted.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a fisheye terminal and connector for stable solderless connection. Background Technology

[0002] Fisheye terminals, as connecting devices, are used for connections and contacts in electronic products and circuit boards. Their manufacturing process commonly utilizes stamping technology. They typically have a circular shape, resembling a fish's eye, hence the name "fisheye terminal." Figures 1-3 As shown.

[0003] Fisheye terminals offer an alternative to soldering for installation. They achieve reliable electrical contact connections through a cold-connection, solderless process. The fisheye terminal is pressed into a hole in the PCB board, and clamping force is applied through the pressing force. During pressing, the fisheye terminal undergoes elastic deformation and connects to the PCB board. Fisheye terminals enable solderless electromechanical interconnection, allowing for rapid connector installation onto PCB modules. Eliminating the soldering process not only reduces connection impedance but also further lowers production costs and assembly time.

[0004] With the increasing use of fisheye terminals in the industry, the connection between fisheye terminals and PCB boards cannot guarantee a stable connection within the holes, which has a certain impact on signal and current transmission. Therefore, it is necessary to improve the structure of fisheye terminals to ensure a stable connection between them and the PCB board holes. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide a fisheye terminal and connector for stable solderless connection.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] One of the technical solutions of this utility model is to provide a fisheye terminal for stable solderless connection, including a connecting part, one end of which is sequentially connected to a base, an elastic part, and a pin part.

[0008] The elastic part includes two symmetrically arranged arc-shaped beams. One end of each beam is connected to the base, and the other end is connected to the pin portion. A fisheye hole is formed between the two beams.

[0009] The outer wall of the curved beam and the base is provided with continuous slots along its bending direction. When the fisheye terminal is inserted into the through hole on the circuit board, the side wall of the through hole on the circuit board engages with the slot.

[0010] In some specific embodiments, the depth of the slot is less than the minimum width of the cross-section of the curved beam.

[0011] In some specific embodiments, both the curved beam and the base are provided with arc-shaped edges.

[0012] In some specific embodiments, the thickness of the fixed end of the plug portion is greater than the thickness of its free end, wherein the fixed end is the end connected to the bent beam.

[0013] In some specific embodiments, the thickness of the curved beam near the base is the same as the thickness of the base, the thickness of the curved beam near the pin is the same as the thickness of the fixed end of the pin, and the thickness of the curved beam near the base is greater than the thickness of the curved beam near the pin.

[0014] In some specific embodiments, the connecting portion has a press-in force-bearing block fixedly connected to the end surface that connects to the base.

[0015] In some specific embodiments, the cross-sectional width of the end of the base connected to the pressure-bearing block is greater than the cross-sectional width of the end of the base connected to the elastic part.

[0016] In some specific embodiments, the cross-sectional width of the end of the base connected to the elastic part is less than or equal to the minimum cross-sectional width of the elastic part.

[0017] In some specific embodiments, the fisheye terminal is integrally formed by stamping.

[0018] The second technical solution of this utility model is to provide a connector, including a circuit board and a fisheye terminal as described in the above technical solution. The circuit board has a through hole, and the fisheye terminal is connected to the circuit board through the through hole, and the side wall of the through hole is engaged with the slot.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention creatively designs a slot in the elastic part of the fisheye terminal. First, the pin is inserted into the through hole of the circuit board. When the elastic part and the circuit board are connected, the slot on the curved beam abuts against the inner wall of the through hole to support the circuit board. This ensures that the fisheye terminal has a stable holding force and meets the electrical performance requirements in the circuit board, thereby avoiding unstable connection between the two and ensuring reliable transmission of signals and current. Attached Figure Description

[0021] Figure 1 This is a top view of an existing fisheye terminal.

[0022] Figure 2 for Figure 1 Schematic diagram of section AA.

[0023] Figure 3 This is a schematic diagram of the existing fisheye terminal structure.

[0024] Figure 4 This is a schematic diagram of the structure of the fisheye terminal of this utility model.

[0025] Figure 5 This is a top view of the fisheye terminal of this utility model.

[0026] Figure 6 for Figure 5 Schematic diagram of section AA.

[0027] The diagram is labeled as follows:

[0028] 1 is the base, 2 is the elastic part, 201 is the bent beam, 3 is the insertion part, 4 is the fish eye hole, 5 is the slot, 6 is the pressure receiving block, and 7 is the connecting part. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] In the following embodiments, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0033] Example 1:

[0034] like Figures 4-6 This is a fisheye terminal for stable solderless connections, comprising a connecting portion 7, one end of which is sequentially connected to a base 1, an elastic portion 2, and a pin portion 3.

[0035] The elastic part 2 includes two arc-shaped and symmetrically arranged curved beams 201. One end of each curved beam 201 is connected to the base 1, and the other end is connected to the insert part 3. A fish-eye hole 4 is formed between the two curved beams 201.

[0036] The curved beam 201 and the outer wall of the base 1 are provided with continuous slots 5 along their bending direction. When the fisheye terminal is inserted into the through hole on the circuit board, the side wall of the through hole on the circuit board is engaged with the slot 5.

[0037] In this technical solution, the fisheye terminal is first inserted into the through hole of the circuit board through the pin part 3. When the elastic part 2 and the circuit board are connected, the slot 5 on the bent beam 201 abuts against the inner wall of the through hole to support the circuit board, thereby avoiding unstable connection between the two.

[0038] Furthermore, the depth of the slot 5 is less than the minimum width of the cross-section of the curved beam 201, so that the sidewalls of the holes on the circuit board can be surrounded by the three sidewalls of the slot 5, thereby effectively ensuring the stability between the two when the fisheye terminal is inserted into the through hole on the circuit board.

[0039] Both the curved beam 201 and the base 1 are provided with rounded edges to avoid damage to the sidewalls of the through holes on the circuit board when the fisheye terminal is inserted into the through holes on the circuit board.

[0040] To further facilitate the insertion of the fisheye terminal into the through-hole on the circuit board, the thickness of the fixed end of the pin portion 3 is greater than the thickness of its free end, wherein the fixed end is the end connected to the curved beam 201. The thickness of the end of the curved beam 201 near the base 1 is the same as the thickness of the base 1, and the thickness of the end of the curved beam 201 near the pin portion 3 is the same as the thickness of the fixed end of the pin portion 3. The greater thickness of the end of the curved beam 201 near the base 1 than the end of the curved beam 201 near the pin portion 3 facilitates precise positioning of the fisheye terminal during assembly, facilitates pre-pressing, and reduces damage to the sidewalls of the holes on the circuit board during the pre-pressing process.

[0041] A pressing-in force-bearing block 6 is fixedly connected to the end surface of the connecting portion 7 that connects to the base portion 1. By applying external force to the pressing-in force-bearing block 6, the fisheye terminal gradually deforms and is inserted into the through hole on the circuit board under the pressure of the pressing-in force-bearing block 6. The cross-sectional width of the end of the base portion 1 connected to the pressing-in force-bearing block 6 is greater than the cross-sectional width of the end of the base portion 1 connected to the elastic portion 2. The cross-sectional width of the end of the base portion 1 connected to the elastic portion 2 is less than or equal to the minimum cross-sectional width of the elastic portion 2.

[0042] The fisheye terminal is integrally formed by stamping, which facilitates its manufacturing. The material of the fisheye terminal can be phosphor bronze or copper-nickel-silicon alloy.

[0043] Example 2:

[0044] This embodiment provides a connector, including a circuit board and a fisheye terminal as described in Embodiment 1. The circuit board has a through hole, and the fisheye terminal is connected to the circuit board through the through hole, and the sidewall of the through hole is engaged with the slot 5.

[0045] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A fisheye terminal for stable solderless connection, comprising a connecting portion (7), characterized in that, One end of the connecting part (7) is sequentially connected to a base (1), an elastic part (2), and a pin part (3). The elastic part (2) includes two curved beams (201) arranged symmetrically in an arc shape. One end of each curved beam (201) is connected to the base (1), and the other end is connected to the pin part (3). A fish-eye hole (4) is formed between the two curved beams (201). The curved beam (201) and the outer sidewall of the base (1) are provided with continuous slots (5) along their bending direction. When the fisheye terminal is inserted into the through hole on the circuit board, the sidewall of the through hole on the circuit board engages with the slot (5).

2. The fisheye terminal for stable solderless connection according to claim 1, characterized in that, The depth of the slot (5) is less than the minimum width of the cross-section of the curved beam (201).

3. The fisheye terminal for stable solderless connection according to claim 1, characterized in that, Both the curved beam (201) and the base (1) are provided with arc edges.

4. The fisheye terminal for stable solderless connection according to claim 1, characterized in that, The thickness of the fixed end of the pin portion (3) is greater than the thickness of its free end, wherein the fixed end is the end connected to the curved beam (201).

5. The fisheye terminal for stable solderless connection according to claim 4, characterized in that, The thickness of the curved beam (201) near the base (1) is the same as the thickness of the base (1), the thickness of the curved beam (201) near the pin (3) is the same as the thickness of the fixed end of the pin (3), and the thickness of the curved beam (201) near the base (1) is greater than the thickness of the curved beam (201) near the pin (3).

6. The fisheye terminal for stable solderless connection according to claim 1, characterized in that, The connecting part (7) has a press-in force block (6) fixedly connected to the end surface that is connected to the base (1).

7. The fisheye terminal for stable solderless connection according to claim 6, characterized in that, The cross-sectional width of the end of the base (1) connected to the pressing force block (6) is greater than the cross-sectional width of the end of the base (1) connected to the elastic part (2).

8. The fisheye terminal for stable solderless connection according to claim 1, characterized in that, The cross-sectional width of the end of the base (1) connected to the elastic part (2) is less than or equal to the minimum cross-sectional width of the elastic part (2).

9. The fisheye terminal for stable solderless connection according to claim 1, characterized in that, The fisheye terminal is integrally formed by stamping.

10. A connector, characterized in that, Includes a circuit board and a fisheye terminal as described in any one of claims 1 to 9, wherein the circuit board has a through hole, the fisheye terminal is connected to the circuit board through the through hole, and the sidewall of the through hole is engaged with the slot (5).

Images