Fisheye terminal with flexible structure

Abstract

The present application relates to the technical field of electronic connectors, and discloses a fisheye terminal with a flexible structure, including a crimping part, a supporting part, a flexible part and a welding part; the crimping part is fixedly connected to the supporting part; the welding part includes two welding feet and a connecting part electrically connecting the two welding feet, and the connecting part is located at one end of the welding feet close to the first PCB board; the supporting part is overlapped to the side of the connecting part close to the first PCB board, and the supporting part is connected to the connecting part through the flexible part; after the crimping part is inserted into the conductive hole on the first PCB board, the supporting part is pressed against the first PCB board; the welding part is used to be welded to the second PCB board. The present application has the advantage of adjusting the misalignment between the fisheye and the conductive hole of the PCB board during the fisheye pressing process to improve the compatibility of the product.

Description

Technical Field

[0001] The present application relates to the technical field of electronic connectors, and in particular to a fisheye terminal with a flexible structure. Background Art

[0002] The combination of press-fit terminals and PCB boards (i.e., circuit boards) is a solderless connection method that can reduce the use of flux and avoid adverse reactions when the motherboard is exposed to an over-temperature soldering furnace, and can be easily removed and replaced. Because there are no solder problems such as empty solder joints, its electrical reliability is high, and it is widely used in industries such as communications and automotive electronics. A solderless press-fit connection used in electronic connection devices and electronic devices using similar technologies. The press-fit connection consists of terminals with suitable press-fit areas inserted into the plated through holes of double-layer or multi-layer printed circuit boards. This type of automotive connector component is usually called a "fisheye terminal" (Pressfit). One end of the terminal is connected to the PCB board by SMT soldering, and the other end is connected to the PCB board by a press-fit connector to achieve the connection of the automotive circuit.

[0003] Fisheye terminals are a type of press-fit terminals. The two elastic parts of the terminals are squeezed and elastically contracted, so that the fisheye terminals can be smoothly inserted into the conductive holes of the circuit board, thereby realizing electrical connection between the fisheye terminals and the circuit board. Fisheye terminals have the advantages of being easy to assemble with the circuit board, no need for welding, being removable, and being able to match smaller conductive holes on the circuit board, so they are widely used.

[0004] With the rapid development and popularization of new energy vehicles, the requirements for automotive electrical systems are getting higher and higher. Electronic connectors are key components for power and signal transmission. The quality of connectors directly affects the performance of the entire electrical system. Therefore, people pay more and more attention to the reliability of electronic connectors. In the field of electronic connectors, fisheye terminals are increasingly widely used. They have the characteristics of low insertion force, short process, vibration resistance, tolerance compensation and little damage to printed circuit board holes.

[0005] Previously, we mainly relied on importing mature products from abroad, which were constrained by existing products in terms of structure and process, and had certain inapplicability. For example, the particularity of the structure led to high requirements for the compatibility of the fisheye position, which resulted in high production costs, low efficiency, high scrap rate and other shortcomings, affecting the large-scale mass production of products. Summary of the invention

[0006] In order to adjust the misalignment between the fisheye and the conductive hole of the PCB board during the fisheye pressing process to improve the compatibility of the product, the present application provides a fisheye terminal with a flexible structure.

[0007] The present application provides a fisheye terminal with a flexible structure, which adopts the following technical solution:

[0008] A fisheye terminal with a flexible structure comprises a crimping portion, a supporting portion, a flexible portion and a welding portion; the crimping portion is fixedly connected to the supporting portion; the welding portion comprises two welding feet and a connecting portion electrically connecting the two welding feet, and the connecting portion is located at one end of the welding feet close to the first PCB board; the supporting portion is overlapped to a side of the connecting portion close to the first PCB board, and the supporting portion is connected to the connecting portion through the flexible portion; after the crimping portion is inserted into a conductive hole on the first PCB board, the supporting portion is pressed against the first PCB board; the welding portion is used for welding to a second PCB board.

[0009] By adopting the above technical solution, in the first stage: the flexible structure of the flexible part supports, the pre-introduction flexible structure of the fisheye crimping part begins to play a role, and adjusts the misalignment of the fisheye during the pressing process. The flexible structure of the flexible part provides the initial support force, so that the fisheye can smoothly enter the conductive hole on the first PCB board. The second stage: the fisheye is pressed into the conductive hole, and the support part supports the fisheye to be inserted into place. When the fisheye enters the conductive hole on the first PCB board to a certain depth, the support part begins to play a role, and the support fisheye structure continues to press in. The support part ensures that the fisheye is completely pressed into the PCB board, while maintaining the tight fit between the fisheye and the conductive hole on the first PCB board. Therefore, by improving the fisheye structure and adopting the puncture type, the flexibility of the fisheye inserted into the conductive hole on the first PCB board is increased. At the same time, the flexible structure added to the product can automatically adjust the misalignment of the fisheye and the conductive hole on the first PCB board during the fisheye pressing process to ensure that the fisheye can be smoothly inserted; the flexible structure can also provide additional buffering to reduce the damage of the fisheye to the first PCB board during the insertion process. Due to the existence of the flexible structure, the fisheye terminal can be adapted to the conductive holes on the first PCB board of different sizes and shapes, so that the fisheye terminal can have greater compatibility during the plug-in process.

[0010] Optionally, the flexible portion includes a first bending portion, a second bending portion and a third bending portion that are fixedly connected, one end of the first bending portion is fixedly connected to a side of the supporting portion away from the crimping portion, one end of the third bending portion is fixedly connected to a side of the connecting portion close to the second PCB board, one end of the second bending portion is fixedly connected to an end of the first bending portion away from the supporting portion, and the other end is fixedly connected to an end of the third bending portion away from the connecting portion.

[0011] By adopting the above technical solution, the flexible part can be bent and deformed within a larger range by including three fixedly connected bending parts, so as to adapt to the position offset between PCB boards. Although the flexible part has a high degree of flexibility, since its parts are fixedly connected, it is ensured that the connector will not fall off or loosen when subjected to external force, and maintains good mechanical stability. The design is relatively simple, easy to manufacture and process, and reduces production costs. By adopting a flexible part design including a first bending part, a second bending part and a third bending part that are fixedly connected, the fisheye structure connector can provide better flexibility and offset compensation capabilities while maintaining high stability and easy manufacturing.

[0012] Optionally, limiting protrusions are provided on both sides of the connection portion at the overlapping portion of the support portion, and a movable gap for displacement is reserved between the limiting protrusion and the support portion.

[0013] By adopting the above technical solution, the limiting protrusion limits the supporting part, preventing the fisheye from being displaced within a relatively stable range during the process of being inserted into the conductive hole on the first PCB board, thereby avoiding excessive deviation or shaking.

[0014] Optionally, the first bending portion is parallel to the third bending portion; the second bending portion is perpendicular to the first bending portion; or the second bending portion includes an arc-shaped bending portion.

[0015] By adopting the above technical solution, the right-angle structural design can provide stable offset compensation in the vertical direction because the second bending portion is perpendicular to the first and third bending portions. The arc design allows offset compensation in multiple directions (not just vertical or horizontal directions), thereby improving the flexibility and adaptability of the connection portion.

[0016] Optionally, a height dimension of the limiting protrusion is lower than a height dimension of the supporting portion.

[0017] By adopting the above technical solution, it is ensured that when the support part is displaced, the limiting protrusion will not directly interfere with the support part, thereby ensuring the smooth operation and stability of the connector.

[0018] Optionally, the length of the support portion is greater than the distance between the two welding feet.

[0019] By adopting the above technical solution, the increase in the length of the supporting portion provides a larger contact area and supporting force, so that the connector is more stable when subjected to external force and is not easy to fall off or loosen.

[0020] Optionally, the crimping portion includes a fisheye hole, and a terminal strength zone, a retaining force zone, a transition zone, an insertion zone and a pre-insertion zone arranged in sequence; the terminal strength zone is an overall arc-shaped structure and is connected to the support portion; the retaining force zone is connected to the end of the terminal strength zone away from the support portion, and is parallel to the inner wall of the conductive hole; the transition zone is connected to the end of the retaining force zone away from the terminal strength zone, and the distant ends gradually approach each other; the insertion zone is connected to the end of the transition zone away from the retaining force zone, and the insertion zone is pointed; the pre-insertion zone is provided with a guide surface for fitting into the conductive hole, and is located at the end of the insertion zone away from the transition zone.

[0021] By adopting the above technical solutions, and combining the design of fisheye holes and multiple functional areas, the connector can maintain a stable connection state in various complex application scenarios, reducing the risk of connection failure. The design of the pointed insertion area and guide surface makes it easier for the connector to be inserted into the conductive hole, reducing the resistance and time during insertion. The design of the arc-shaped terminal strength area and retention area provides the necessary strength and stability, extending the service life of the connector. The design of the transition area and pre-insertion area enables the connector to adapt to conductive holes of different shapes and sizes, improving the compatibility and flexibility of the connector.

[0022] Optionally, the first bending portion and / or the third bending portion includes a torsion portion, and the torsion portion is formed by a connection between two connecting plates having an angle difference.

[0023] By adopting the above technical solution and introducing a torsion portion design in the first bending portion and / or the third bending portion, the fisheye structure connector further improves its flexibility and offset compensation capability while maintaining high stability and durability.

[0024] A fisheye terminal with a flexible structure comprises a press-in portion, an elastic portion and a pin portion; the pin portion comprises two pin ends, the pin ends are welded on a second PCB board, and the pin portion further comprises a conductive connector connecting the two pin ends; the press-in portion is connected to a conductive support member through the elastic portion; the conductive support member is conductively connected and overlapped to a side of the conductive connector close to the first PCB board; after the press-in portion is inserted into a conductive hole on the first PCB board, the conductive support member is pressed against the first PCB board.

[0025] By adopting the above technical solution, the insertion process: insert the pressing part into the conductive hole on the first PCB board. During the insertion process, the elastic part is squeezed and elastically deformed, so that the pressing part adapts to the position of the conductive hole. Conductive connection: when the pressing part is fully inserted into the conductive hole, the first PCB board and the second PCB board are fixed and locked, and the conductive support member is pressed against the first PCB board. At this time, the conductive support member and the conductive connecting member form a conductive connection on the side close to the first PCB board, thereby completing the electrical connection of the entire connector. Offset compensation: when there is a position deviation between the first PCB board and the second PCB board, the elastic part can be elastically deformed to absorb this deviation. By adjusting the material and shape of the elastic part, its offset compensation capability can be optimized to meet different application requirements.

[0026] Optionally, the elastic portion includes a fourth bending portion, a fifth bending portion and a sixth bending portion; one end of the fourth bending portion is fixedly connected to the pressing portion, and the other end is fixedly connected to one end of the fifth bending portion, the other end of the fifth bending portion is fixedly connected to one end of the sixth bending portion, and the other end of the sixth bending portion is fixedly connected to the conductive support member.

[0027] By adopting the above technical solutions, the fisheye structure connector further improves its elastic deformation ability and offset compensation performance while maintaining high stability and durability. This enables the connector to better adapt to the position deviation between different PCB boards, providing a strong guarantee for reliable connection in various complex application scenarios.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: when the crimping portion is inserted into the conductive hole on the first PCB board, the supporting portion is pressed against the first PCB board to ensure the electrical connection and mechanical stability between the connector and the first PCB board. At the same time, the flexible portion allows the connector to bend and deflect within a certain range to adapt to the position deviation between the PCB boards. Finally, the welding portion is welded to the second PCB board to complete the entire connection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0030] Figure 2 It is a schematic diagram of the overall structure in the application scenario of the embodiment of the present application.

[0031] Figure 3 It is a force analysis diagram of the first stage of the installation process in application embodiment 1.

[0032] Figure 4 It is a top view of application embodiment 1.

[0033] Figure 5It is a structural schematic diagram of the crimping portion in application embodiment 1.

[0034] Figure 6 It is a manufacturing process of application embodiment 1 and an expanded schematic diagram of the overall structure.

[0035] Figure 7 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0036] Figure 8 It is a schematic diagram of the overall structure of the first structure of Example 3 of the present application.

[0037] Fig. 9 It is a manufacturing process of application embodiment 3 and an expanded schematic diagram of the overall structure.

[0038] Fig.10 yes Fig. 9 Schematic diagram of the folded structure.

[0039] Fig.11 It is a schematic diagram of the overall structure of the second structure of Example 3 of the present application.

[0040] 1. Crimp portion; 101. Fisheye hole; 2. Support portion; 3. Flexible portion; 301. First bending portion; 302. Second bending portion; 303. Third bending portion; 304. Twisting portion; 4. Welding portion; 401. Welding foot; 402. Connecting portion; 403. Position limiting protrusion; 5. First PCB board; 501. Conductive hole; 6. Second PCB board; 7. Press-in portion; 8. Elastic portion; 9. Pin portion; 10. Conductive connector; 11. Conductive support member; 12. Fourth bending portion; 13. Fifth bending portion; 14. Sixth bending portion. DETAILED DESCRIPTION

[0041] The present application is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] Example 1

[0043] An embodiment of the present application discloses a fisheye terminal with a flexible structure.

[0044] Reference Figure 1 and Figure 2A fisheye terminal with a flexible structure includes a crimping portion 1, a supporting portion 2, a flexible portion 3 and a welding portion 4; the crimping portion 1, the supporting portion 2, the flexible portion 3 and the welding portion 4 are integrally formed and made of a conductive material. The welding portion 4 includes two welding legs 401 and a connecting portion 402 electrically connecting the two welding legs 401, the two welding legs 401 are arranged in parallel and vertically welded to the second PCB board 6. The connecting portion 402 is located at one end of the welding legs 401 close to the first PCB board 5, and the connecting portion 402 is a C-shaped structure or a U-shaped structure as a whole. The supporting portion 2 is a rectangular rod-shaped structure as a whole, the length direction of the supporting portion 2 is parallel to the first PCB board, and the two ends of the supporting portion 2 are overlapped to the side of the connecting portion 402 close to the first PCB board 5; in the initial position, the two ends of the supporting portion 2 are respectively placed corresponding to the positions of the two welding legs 401. The crimping part 1 is fixedly connected to the center of the support part 2 and close to the side of the first PCB board 5; the support part 2 is far away from the side of the first PCB board 5, and the position corresponding to the crimping part 1 is connected to the side of the connecting part 402 far away from the first PCB board 5 through the flexible part 3. After the crimping part 1 is inserted into the conductive hole 501 on the first PCB board 5, the support part 2 is pressed against the first PCB board 5 under the action of the flexible part 3.

[0045] Reference Figure 3 and Figure 4 In the actual operation process, it is mainly divided into two stages:

[0046] The first stage: the flexible structure of the flexible part 3 supports, and the pre-introduction flexible structure of the fisheye crimping part 1 begins to play a role, adjusting the misalignment of the fisheye during the pressing process. The flexible structure of the flexible part 3 provides an initial support force, so that the fisheye can smoothly enter the conductive hole 501 on the first PCB board 5.

[0047] The second stage: the fish eye is pressed into the conductive hole 501, and the support part 2 supports the fish eye to be inserted into place. When the fish eye enters the conductive hole 501 on the first PCB board 5 to a certain depth, the support part 2 starts to play a role, supporting the fish eye structure to continue to be pressed in. The support part 2 ensures that the fish eye is completely pressed into the PCB board, while maintaining a close fit between the fish eye and the conductive hole 501 on the first PCB board 5.

[0048] Therefore, by improving the fisheye structure and adopting a piercing method, the flexibility of inserting the fisheye into the conductive hole 501 on the first PCB board 5 is increased, and the flexible structure added to the product can automatically adjust the misalignment between the fisheye and the conductive hole 501 on the first PCB board 5 during the fisheye pressing process to ensure that the fisheye can be smoothly inserted; the flexible structure can also provide additional buffering to reduce the damage of the fisheye to the first PCB board 5 during the insertion process. Due to the existence of the flexible structure, the fisheye terminal can be suitable for the conductive holes 501 on the first PCB board 5 of different sizes and shapes, which can make the fisheye terminal have greater compatibility during the insertion process.

[0049] Reference Figure 1 The flexible portion 3 includes an integrally formed first bending portion 301, a second bending portion 302 and a third bending portion 303, which are U-shaped or C-shaped as a whole. One end of the first bending portion 301 is vertically fixedly connected to the side of the support portion 2 away from the crimping portion 1, and one end of the third bending portion 303 is vertically fixedly connected to the side of the connecting portion 402 close to the second PCB board 6. One end of the second bending portion 302 is fixedly connected to the end of the first bending portion 301 away from the support portion 2, and the other end is fixedly connected to the end of the third bending portion 303 away from the connecting portion 402. The angle between the first bending portion 301 and the second bending portion 302 is an acute angle, a right angle or an obtuse angle, and the right angle is used as an example for display in the attached drawings.

[0050] By including three fixedly connected bending parts, the flexible part 3 can be bent and deformed within a larger range, thereby adapting to the position offset between PCB boards. Although the flexible part 3 has a high degree of flexibility, since its various parts are connected in an integrally formed manner, it is ensured that the connector will not fall off or loosen when subjected to external force, thereby maintaining good mechanical stability. This design is relatively simple, easy to manufacture and process, and reduces production costs. Therefore, by adopting a flexible part 3 design including a first bending part 301, a second bending part 302 and a third bending part 303 that are fixedly connected, the fisheye structure connector can provide better flexibility and offset compensation capabilities while maintaining high stability and easy manufacturing characteristics.

[0051] The connection part 402 is integrally formed with block-shaped limiting protrusions 403 on both sides of the overlapped part of the support part 2, and a movable gap is reserved between the limiting protrusions 403 and the end side walls of the support part 2 for displacement, so as to adjust the misalignment between the fish eye and the conductive hole 501 on the first PCB board 5. The limiting protrusions 403 limit the support part 2, preventing the fish eye from being displaced within a relatively stable range during the insertion of the conductive hole 501 on the first PCB board 5, thereby avoiding excessive deviation or shaking. In order to ensure that the limiting protrusions 403 do not directly interfere with the support part 2 when the support part 2 is displaced, the height dimension of the limiting protrusions 403 is lower than the height dimension of the support part 2, thereby ensuring the smooth operation and stability of the connection part 402.

[0052] In other embodiments, in addition to the first bend 301 being parallel to the third bend 303; the second bend 302 is perpendicular to the first bend 301. The second bend 302 may also include an arcuate bend, that is, the flexible portion 3 is a U-shaped structure as a whole. The right-angle structural design can provide stable offset compensation in the vertical direction because the second bend 302 is perpendicular to the first and third bends 303. The arc design allows offset compensation in multiple directions (not just vertical or horizontal directions), thereby improving the flexibility and adaptability of the connecting portion 402.

[0053] The length of the support portion 2 is greater than the spacing between the two solder legs 401. The increase in the length of the support portion 2 provides a larger contact area and support force, making the connector more stable when subjected to external force and less likely to fall off or loosen. A longer support portion 2 can ensure a more reliable electrical connection with the PCB board, reducing electrical failures caused by poor contact. With the length of the support portion 2, the connection portion 402 can maintain good contact and connection even when the position deviation between the PCB boards is large, thereby improving the adaptability and compatibility of the connection portion 402.

[0054] Reference Figure 5 The crimping portion 1 includes a fisheye hole 101, and an integrally formed terminal strength zone, a retaining force zone, a transition zone, an insertion zone and a pre-insertion zone; the terminal strength zone is an overall arc-shaped structure and is connected to the support portion 2; the retaining force zone is connected to the end of the terminal strength zone away from the support portion 2, and is parallel to the inner wall of the conductive hole 501; the transition zone is connected to the end of the retaining force zone away from the terminal strength zone, and the distant ends gradually approach each other; the insertion zone is connected to the end of the transition zone away from the retaining force zone, and the insertion zone is pointed; the pre-insertion zone is provided with a guide surface for fitting into the conductive hole 501, and is located at the end of the insertion zone away from the transition zone.

[0055] By combining the design of the fisheye hole 101 and multiple functional areas, the connector can maintain a stable connection state in various complex application scenarios and reduce the risk of connection failure. The design of the pointed insertion area and the guide surface makes it easier for the connector to be inserted into the conductive hole 501, reducing the resistance and time during insertion. The design of the terminal strength area and the retention area of ​​the arc structure provides the necessary strength and stability, extending the service life of the connector. The design of the transition area and the pre-insertion area enables the connector to adapt to conductive holes 501 of different shapes and sizes, improving the compatibility and flexibility of the connector.

[0056] Reference Figure 6 The structure of this embodiment can be formed by stamping, shearing, bending or other methods of the plate shown in the figure. The operation is simple and conducive to large-scale production.

[0057] The implementation principle of a fisheye terminal with a flexible structure in an embodiment of the present application is that the fisheye can accommodate a larger offset between the fisheye and the PCB hole. When the board spacing is 12mm or 9mm, the maximum offset in the structure of the present application can reach ±0.8mm, which is compatible with large fluctuations in PCB hole positions, thereby reducing the process difficulty and ensuring product reliability and mass production feasibility.

[0058] Example 2

[0059] An embodiment of the present application discloses a fisheye terminal with a flexible structure.

[0060] Reference Figure 7 , the structure of this embodiment 2 is basically the same as that of embodiment 1, except that: the first bending portion 301 and / or the third bending portion 303 includes a torsion portion 304, and the torsion portion 304 is formed by the connection of two connecting plates with an angle difference. In the accompanying drawings, the torsion portion 304 is provided on the first bending portion 301 as an example for display; the first bending portion 301 is composed of a long strip of plate-like structure, and the degree of twisting in the middle part is 90°, forming two rectangular long strips of plate-like structures perpendicular to each other, and the connection between the two rectangular long strips of plate-like structures is the torsion portion 304. In other embodiments, the above-mentioned torsion portion 304 structure may be provided on the third bending portion 303, or the above-mentioned torsion portion 304 structure may be provided on both the first bending portion 301 and the third bending portion 303.

[0061] By introducing the design of the torsion portion 304 in the first bending portion 301 and / or the third bending portion 303 , the fisheye structure connection portion 402 further improves its flexibility and offset compensation capability while maintaining high stability and durability.

[0062] Example 3

[0063] An embodiment of the present application discloses a fisheye terminal with a flexible structure.

[0064] Reference Figure 8, a fisheye terminal with a flexible structure, including an integrally formed press-in portion 7, an elastic portion 8 and a pin portion 9. The pin portion 9 includes two parallel pin ends, which are vertically welded on the second PCB board 6, and the end of the pin portion 9 away from the second PCB board 6 is integrally formed with a conductive connector 10 connecting the two pin ends. The conductive connector 10 is a C-shaped or U-shaped structure as a whole. The press-in portion 7 is connected to a conductive support member 11 through the elastic portion 8; the conductive support member 11 is a rectangular parallelepiped as a whole, and the length direction is parallel to the first PCB board 5. The conductive support member 11 is conductively connected and overlapped to the side of the conductive connector 10 close to the first PCB board 5. Similarly, the end of the conductive connector 10 corresponding to the conductive support member 11 is integrally formed with a limiting protrusion 403. After the press-in portion 7 is inserted into the conductive hole 501 on the first PCB board 5, the conductive support member 11 is pressed against the first PCB board 5.

[0065] The elastic portion 8 includes an integrally formed fourth bending portion 12, a fifth bending portion 13 and a sixth bending portion 14; one end of the fourth bending portion 12 is fixedly connected to the pressing portion 7, and the other end is fixedly connected to one end of the fifth bending portion 13, the other end of the fifth bending portion 13 is fixedly connected to one end of the sixth bending portion 14, and the other end of the sixth bending portion 14 is fixedly connected to the conductive support member 11.

[0066] The press-in portion 7 is located at the outer circumference or the inner circumference of the conductive connector 10 , and a movable gap is reserved between the side wall of the fourth bent portion 12 and the side wall of the conductive connector 10 .

[0067] The fisheye structure connection part 402 further improves its elastic deformation ability and offset compensation performance while maintaining high stability and durability, so that the connection part 402 can better adapt to the position deviation between different PCB boards, providing a strong guarantee for reliable connection in various complex application scenarios.

[0068] One of the processing processes:

[0069] First, follow Fig. 9 The figure shown in the figure is punched, a break line is set at the bending point, and folding and punching are performed according to the steps in the figure.

[0070] Production method ①, such as Fig. 9 and Fig.10 As shown in , the structure above the dotted line is folded back along the dotted line; Figure 8 In this structure, the press-in portion 7 is located on the outer peripheral side of the conductive connector 10; the press-in portion 7 is further punched to form Figure 8 The fisheye structure shown.

[0071] Production method ②, such as Fig. 9 and Fig.10As shown in , the structure above the dotted line is folded forward along the dotted line; Figure 8 The press-in portion 7 is located on the inner circumference of the conductive connector 10; the press-in portion 7 is further punched to form Fig.11 The fisheye structure shown.

[0072] Insertion process: insert the press-in portion 7 into the conductive hole 501 on the first PCB board 5. During the insertion process, the elastic portion 8 is squeezed and elastically deformed, and the fracture line is punched and broken; under the action of the elastic portion 8, the press-in portion 7 can be inserted into the conductive hole 501. After the press-in portion 7 is fully inserted into the conductive hole 501, the first PCB board 5 and the second PCB board 6 are fixed and locked by bolts or other connectors, and the conductive support member 11 is pressed against the first PCB board 5. At this time, the conductive support member 11 forms a conductive connection with the side of the conductive connector 10 close to the first PCB board 5, thereby completing the electrical connection of the entire connector. When there is a position deviation between the first PCB board 5 and the second PCB board 6, the elastic portion 8 can be elastically deformed to absorb this deviation. By adjusting the material and shape of the elastic portion 8, its offset compensation capability can be optimized to adapt to different application requirements. The presence of the elastic portion 8 enables the connection portion 402 to perform offset compensation in multiple directions, thereby improving the flexibility of the connection portion 402. By reasonably designing the material and shape of the elastic portion 8, the connector can be compatible with a larger offset, thereby adapting to the position deviation between different PCB boards. The manufacturing process of the fisheye structure is relatively simple and the cost is low. The fisheye terminal with a flexible structure achieves high flexibility and offset compensation capability when connecting between PCB boards through its unique design and working principle. These advantages enable the connector to provide excellent electrical connection and stable performance in various complex application scenarios.

[0073] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fisheye terminal with a flexible structure, characterized in that: The invention comprises a crimping portion, a supporting portion, a flexible portion and a welding portion; the crimping portion is fixedly connected to the supporting portion; the welding portion comprises two welding feet and a connecting portion electrically connecting the two welding feet, and the connecting portion is located at one end of the welding foot close to the first PCB board; the supporting portion is overlapped to a side of the connecting portion close to the first PCB board, and the supporting portion is connected to the connecting portion through the flexible portion; after the crimping portion is inserted into the conductive hole on the first PCB board, the supporting portion is pressed against the first PCB board; the welding portion is used to be welded to the second PCB board; the flexible portion comprises a first bending portion, a second bending portion and a third bending portion that are fixedly connected, and the first bending portion, the second bending portion and the third bending portion are connected to each other. The three bending parts are U-shaped as a whole; one end of the first bending part is fixedly connected to the side of the supporting part away from the crimping part, one end of the third bending part is fixedly connected to the side of the connecting part close to the second PCB board, one end of the second bending part is fixedly connected to the end of the first bending part away from the supporting part, and the other end is fixedly connected to the end of the third bending part away from the connecting part; limiting protrusions are arranged on both sides of the overlapping part of the supporting part on the connecting part, and a movable gap for displacement is reserved between the limiting protrusion and the supporting part; the first bending part and / or the third bending part include a torsion part, and the torsion part is formed by the connection of two connecting plates with an angle difference.

2. The fisheye terminal with a flexible structure according to claim 1, characterized in that: The first bending portion is parallel to the third bending portion; the second bending portion is perpendicular to the first bending portion or the second bending portion includes an arc-shaped bending portion.

3. The fisheye terminal with a flexible structure according to claim 1, characterized in that: The height dimension of the limiting protrusion is lower than the height dimension of the supporting portion.

4. The fisheye terminal with a flexible structure according to claim 3, characterized in that: The length of the support portion is greater than the distance between the two welding feet.

5. The fisheye terminal with a flexible structure according to claim 1, characterized in that: The crimping portion includes a fisheye hole, and a terminal strength zone, a retaining force zone, a transition zone, an insertion zone and a pre-insertion zone which are arranged in sequence; the terminal strength zone is in an arc-shaped structure as a whole and is connected to the support portion; the retaining force zone is connected to one end of the terminal strength zone away from the support portion and is parallel to the inner wall of the conductive hole; the transition zone is connected to one end of the retaining force zone away from the terminal strength zone, and the distant ends gradually approach each other; the insertion zone is connected to one end of the transition zone away from the retaining force zone, and the insertion zone is pointed; the pre-insertion zone is provided with a guide surface for fitting into the conductive hole, and is located at one end of the insertion zone away from the transition zone.

6. A fisheye terminal with a flexible structure, characterized in that: The invention comprises a pressing part, an elastic part and a pin part; the pressing part is used to be plugged into the conductive hole on the first PCB board; the pin part comprises two pin ends, the pin ends are welded on the second PCB board, and the pin part also comprises a conductive connector connecting the two pin ends; the pressing part is connected to a conductive support member through the elastic part, and the conductive support member is overlapped or integrally connected to a side of the conductive connector close to the first PCB board; a fracture line is arranged at the connection between the pressing part and the conductive connector; in the process of the pressing part being plugged into the conductive hole on the first PCB board, the elastic part is squeezed and elastically deformed, and the fracture line is punched and cut off; the elastic part comprises a fourth bending part, a fifth bending part and a sixth bending part; one end of the fourth bending part is fixedly connected to the pressing part, and the other end is fixedly connected to one end of the fifth bending part, the other end of the fifth bending part is fixedly connected to one end of the sixth bending part, and the other end of the sixth bending part is fixedly connected to the conductive support member; the fourth bending part, the fifth bending part and the sixth bending part are located between two adjacent pin ends.

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