Welding-free contact pin

Abstract

The utility model provides a welding-free contact pin which is connected with a metal lead, the welding-free contact pin and the metal lead are integrally formed, the welding-free contact pin comprises an insertion rod and an end head, one end of the insertion rod is connected with the metal lead, and the other end of the insertion rod is fixedly connected with the end head. By adopting the welding-free contact pin provided by the utility model, the stability and the reliability of connection are obviously improved. As the insertion rod and the end head are connected with the metal lead through an integrated forming process, the problems of infirm connection and insufficient mechanical strength possibly caused by a traditional welding mode are avoided. The design not only enhances the overall mechanical strength of the pin, but also simplifies the manufacturing and mounting processes, and improves the production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of electromechanical connection, and in particular to a solder-free pin, which is particularly suitable for electromechanical connection in automotive electronics, communication equipment and various electrical equipment. Background Art

[0002] With the development of electronic technology, electrical connectors are widely used in various electronic devices and systems. Especially in the electromechanical system of automobiles, the performance of the pin, as an important part of the connector, directly affects the reliability and stability of the entire system. The traditional method of manufacturing pins is mainly to cut and shape them from copper sheets. Although this process can meet basic usage requirements, it has problems such as complex process, high cost and low production efficiency.

[0003] Fisheye pins are widely used in electromechanical connections of printed circuit boards (PCBs) and other control units due to their reliable performance, efficient installation process and low space requirements. Traditional fisheye pins are usually cut and formed from copper sheets. This method not only has low material utilization, but also easily generates burrs during the cutting and forming process, affecting the quality of the pins.

[0004] In addition, the traditional manufacturing process of pins often requires welding, which increases the process steps and manufacturing costs. At the same time, poor electrical contact is prone to occur during the welding process, affecting the electrical connection reliability of the pins.

[0005] In order to solve these problems, some solder-free connectors have appeared on the market, which achieve electrical connection through mechanical clamping, crimping, etc. However, these existing solder-free connectors still have shortcomings in practical applications, such as poor connection reliability, complex assembly, and high contact resistance.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0007] In view of the problems in the prior art, the purpose of the utility model is to provide a soldering-free pin, which connects the insertion rod and the end with the metal lead through an integrated molding method, and has the advantages of reasonable structure, reliable connection, high mechanical strength and easy installation, thereby solving the problems of unstable connection, insufficient mechanical strength and complicated manufacturing and installation processes in the prior art, while broadening the application of lead wires, simplifying the manufacturing process and saving costs.

[0008] The embodiment of the utility model provides a soldering-free pin, which is connected to a metal lead. The soldering-free pin and the metal lead are integrally formed. The soldering-free pin includes an insertion rod and an end. One end of the insertion rod is connected to the metal lead, and the other end of the insertion rod is fixedly connected to the end.

[0009] Furthermore, the metal lead is a round metal lead.

[0010] Furthermore, the metal lead is a copper wire.

[0011] Furthermore, the tip is a fish-eye shaped needle.

[0012] Furthermore, the number of the fish-eye-shaped needles is two.

[0013] Furthermore, a "V"-shaped knurling structure is provided on the surface of the insertion rod to increase the friction and fixing force between the insertion rod and the matching component.

[0014] Furthermore, the "V"-shaped knurling structure is composed of four "V"-shaped knurlings evenly distributed on the surface of the insertion rod.

[0015] Furthermore, a transition section is provided between the end and the insertion rod, and the diameter of the transition section gradually increases from the insertion rod to the end, so as to provide positioning and support when the insertion rod is inserted into the PCB.

[0016] Furthermore, a shoulder is provided between the end and the insertion rod, and protruding limit blocks are provided on the left and right sides of the shoulder.

[0017] Furthermore, the shoulder is formed by a press to ensure that the insertion rod is not deformed during the insertion process.

[0018] Furthermore, the solder-free pins and the metal leads are integrally formed by a stamping process.

[0019] Furthermore, the thickness of the insert rod is controlled by adjusting the stamping process parameters to meet the needs of different application scenarios.

[0020] Furthermore, the plug rod is processed by an environmentally friendly electroplating process to improve the corrosion resistance and environmental friendliness of the plug rod.

[0021] The solder-free pin provided by the utility model has the following advantages:

[0022] By adopting the solder-free plug pin of the utility model, the stability and reliability of the connection are significantly improved. Since the plug rod and the end are connected to the metal lead through an integrated molding process, the problems of loose connection and insufficient mechanical strength that may be caused by the traditional welding method are avoided. This design not only enhances the overall mechanical strength of the plug pin, but also simplifies the manufacturing and installation process and improves production efficiency.

[0023] In addition, in some optional embodiments, the solder-free pin of the utility model is provided with a transition section and a shoulder in structure. The transition section gradually increases from the insertion rod to the end, providing effective positioning and support for the insertion rod, and the concave design on the left and right sides of the shoulder enhances the fixing force and stability of the pin when inserted into the PCB. The "V"-shaped knurling structure on the surface of the insertion rod further increases the friction between the insertion rod and the mating component, preventing the pin from loosening or falling off during use.

[0024] In some optional embodiments, the utility model also provides implementation methods of various end shapes and quantities, especially the design of fisheye-shaped needles, which are suitable for different application scenarios and meet the connection requirements of various electrical and electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0026] Figure 1 This is a front view of a solder-free pin in one embodiment of the utility model;

[0027] Figure 2 It is a front view schematic diagram of a solder-free pin in one embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of the end of a solder-free pin according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] 110 Insertion rod 111 Knurling structure

[0031] 120 end 130 transition section

[0032] 140 Shoulders DETAILED DESCRIPTION

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that the utility model will be comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. "Or" and "or" in the specification may both mean "and" or "or". Although the terms "upper", "lower", "between", etc. may be used in this specification to describe different exemplary features and elements of the utility model, these terms are used herein only for convenience, such as according to the directions of the examples in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the utility model.

[0034] The utility model provides a solder-free pin connected to a metal lead. The solder-free pin and the metal lead are integrally formed. The solder-free pin includes an insertion rod and an end. One end of the insertion rod is connected to the metal lead, and the other end of the insertion rod is fixedly connected to the end. When in use, the pin is inserted into the socket of the circuit board, and the end is in close contact with the corresponding electrical connection component on the circuit board to ensure good electrical connection performance. The pin and the metal lead are integrally formed, which reduces the welding process and improves production efficiency and product quality. When in use, the staff only needs to insert the pin into the circuit board without the need for additional welding steps. The operation is simple and efficient. The pin has the advantages of simple structure and high reliability as a whole.

[0035] Combine the following Figures 1 to 3 The working principle of the solder-free pin of an embodiment of the utility model is specifically introduced. It is understandable that the following description is only an example and is not intended to limit the protection scope of the utility model.

[0036] like Figures 1 to 3 As shown, in this embodiment, a solder-free pin is provided, which is connected to a metal lead. The solder-free pin and the metal lead are integrally formed. The solder-free pin includes a plug rod 110 and an end 120. One end of the plug rod 110 is connected to the metal lead, and the other end of the plug rod 110 is fixedly connected to the end 120. Definition Figure 2 The vertical direction is the height direction, and the axial direction of the solder-free pin is parallel to the height direction. Figure 2The left and right directions in the figure are the left and right directions of reference. The utility model is used for mechanical and electronic connection of circuit boards and other control units. The insertion rod 110 of the pin is partially inserted into the socket of the circuit board to ensure that the pin is firmly fixed on the circuit board. The shaped end 120 is in close contact with the corresponding electrical connection component on the circuit board to ensure good electrical connection performance. The pin and the metal lead are integrally formed, which reduces the welding process and improves production efficiency and product quality. When in use, the staff only needs to insert the pin into the circuit board without the need for additional welding steps. The operation is simple and efficient. The pin can be a single-end structure or a double-end structure to meet different application requirements. The pin has the advantages of simple structure and high reliability as a whole.

[0037] In order to further solve the problems of stability and processing convenience of metal lead connection, the metal lead in the utility model is a circular metal lead. The circular metal lead has high mechanical strength and good electrical conductivity, which can ensure the electrical connection reliability and mechanical stability of the pin during use. At the same time, the processing technology of the circular metal lead is relatively simple, and it is easy to achieve one-piece molding, which reduces the processing difficulty and production cost. In practical applications, the shape of the metal lead is not specifically limited, and it can be a metal lead of other shapes, as long as the technical effect of the utility model can be achieved. For example, the metal lead can be square, oval or other cross-sectional shapes with similar properties. These deformations and alternatives belong to the protection scope of the utility model without affecting the technical effect.

[0038] In order to further improve the conductivity and anti-oxidation ability of the solder-free pins, the metal lead in the utility model is a copper wire. Copper wire has excellent conductivity and good corrosion resistance, which can ensure that the pins maintain stable electrical connection performance and reliable mechanical strength during long-term use. At the same time, the copper material has good processing performance, and it is easy to achieve precision processing and one-piece molding, which further improves production efficiency and product quality. In practical applications, the material of the metal lead is not specifically limited, and it can be other metal materials that can achieve the technical effects of the utility model. For example, the metal lead can be aluminum wire, silver-plated copper wire or other metal materials with similar conductivity and anti-oxidation properties. These alternatives are all within the scope of protection of the utility model without affecting the technical effects.

[0039] In order to further enhance the connection stability and mechanical strength of the solder-free pin, the terminal 120 in the utility model is a fisheye-shaped needle. The fisheye-shaped needle design can provide a large contact area and good fitting performance, ensuring that the pin can be firmly fixed after being inserted into the circuit board socket, reducing the risk of loosening and falling off. At the same time, the fisheye-shaped structure helps to reduce the insertion force and improve assembly efficiency. In practical applications, the shape of the terminal 120 is not specifically limited, and can be other structures that can achieve the technical effect of the utility model. For example, the terminal 120 can be spherical, conical or other shapes with similar fitting performance and connection stability. These alternatives all belong to the scope of protection of the utility model without affecting the technical effect. By adopting a fisheye-shaped needle, the solder-free pin of the utility model adopts a fisheye-shaped needle to provide a large contact area and good fitting performance, ensuring that the pin can be firmly fixed after being inserted into the circuit board socket, effectively reducing the risk of loosening and falling off. The fisheye-shaped structure enhances the mechanical strength of the pin terminal 120, making it less likely to deform or break during use, and improving the reliability and durability of the product. The fisheye-shaped needle design optimizes the insertion force, reduces the force required to insert the pin into the circuit board socket, improves assembly efficiency, and reduces the difficulty of manual operation. The larger contact area helps to improve the electrical contact performance and ensure the stability and reliability of electrical signal transmission. The fisheye-shaped needle is suitable for various types of circuit board connections to meet the needs of different application scenarios. The shape of the terminal 120 is not strictly limited, and other structures can be selected according to specific application requirements, providing flexibility in design and application. In summary, this embodiment further improves the connection stability, mechanical strength and assembly efficiency of the solder-free pin by adopting a fisheye-shaped needle as the terminal 120, while taking into account both electrical contact performance and design flexibility, and has significant technical advantages and broad application prospects.

[0040] In order to further enhance the multi-point contact stability and connection reliability of the solder-free pins, the number of fisheye needles in this embodiment is two. This double fisheye needle design can provide multiple contact points to ensure that the pin is more firmly fixed and has better electrical contact performance after being inserted into the circuit board socket. The two fisheye needles can provide support and connection in different directions, further reducing the risk of loosening and falling off. In practical applications, the shape and number of the needles are not specifically limited, and can be other structures that can achieve the technical effects of the utility model. For example, the number of needles can be one, two or more, and the shape can be spherical, conical or other shapes with similar fitting performance and connection stability. These alternatives are within the scope of protection of the utility model without affecting the technical effects.

[0041] In order to further improve the connection stability and reliability of the solderless pin, a "V"-shaped knurled structure 111 is provided on the surface of the plug rod 110. The main function of the knurling is to introduce interference, increase the friction of axial movement, and maintain radial compression between the pin and its mating component. Such a design can effectively reduce the loosening of the pin during use, improve the reliability and stability of the connection, thereby extending the service life of the pin and reducing maintenance costs. In practical applications, the shape of the knurled structure 111 is not specifically limited, and can be other shapes. As long as the structure can achieve technical effects such as increasing the friction of axial movement and maintaining radial compression, it belongs to the protection scope of the present utility model.

[0042] In order to further improve the connection stability and reliability of the solder-free pin, the "V"-shaped knurling structure 111 is composed of four "V"-shaped knurlings evenly distributed on the surface of the plug rod 110. These "V"-shaped knurlings can be processed by a stamping process, through the up and down extrusion of the mold, piercing the metal wire. For example, a highly ductile metal such as copper is used, and the stamping causes overflow to form burrs. Such a design not only increases the friction and radial compression between the pin and its mating parts, but also helps to improve the anti-loosening and stability of the pin, making it more suitable for connection requirements in various working environments and conditions. In practical applications, the number of "V"-shaped knurlings is not specifically limited, and can be other numbers. As long as the knurling structure 111 can achieve technical effects such as increasing friction and maintaining radial compression, it belongs to the protection scope of the present utility model.

[0043] In order to further improve the connection stability and reliability of the solder-free pin, the diameter of the transition section 130 gradually increases from the insertion rod 110 to the end 120. Such a transition section 130 design is intended to provide a more uniform force distribution for the connection between components, reduce stress concentration during the connection process, and thus improve the reliability and stability of the connection. In practical applications, the shape of the transition section 130 can be adjusted according to the needs of the connection. For example, a transition section 130 of a corresponding shape can be set according to the needs of connecting to the end 120 or the shoulder 140. Figure 1 to Figure 2 The transition section 130 shown is a setting scheme adopted for connecting to the shoulder 140. In practical applications, the setting of the transition section 130 is not specifically limited and can be other shapes. As long as the transition section 130 structure can achieve the technical effect of providing uniform force distribution and reducing stress concentration, it belongs to the protection scope of the present utility model.

[0044] In order to further improve the connection stability and reliability of the solder-free pin, a shoulder 140 is provided between the end 120 and the insertion rod 110, and protruding limit blocks are provided on the left and right sides of the shoulder 140. The shoulder 140 designed in this way can be compressed by a pressure clamp, and the shoulder 140 is formed by a press so that the pin can be inserted into the printed circuit board to ensure that the insertion rod 110 does not deform during the insertion process. The protruding limit block of the shoulder 140 can ensure the correct position of the pin during the connection process, prevent the pin from being too deep or not deep enough, thereby improving the installation accuracy and connection stability of the pin. In actual applications, the shape and layout of the shoulder 140 and the limit block are not specifically limited, and can be other shapes. As long as the function of improving the connection accuracy and stability can be achieved, it belongs to the protection scope of the present utility model.

[0045] In order to further improve the manufacturing efficiency and connection stability of solder-free pins, the solder-free pins and metal leads are integrally formed by a stamping process. This stamping process can be formed by placing the metal lead and the pin together in a mold, and then applying high pressure to form, so that the pin and the metal lead are formed in the same process, which greatly improves the manufacturing efficiency and product consistency. The one-piece molding method can also reduce the connection interface between the pin and the metal lead, reduce the resistance and failure possibility during the connection, and thus improve the stability and reliability of the connection. This manufacturing process integrates the metal lead and the pin, which can not only simplify the production process, but also reduce manual operations and reduce production costs. The use of metal leads to manufacture solder-free pins also broadens the application range of wires, provides more options for the design and manufacture of pins, and further saves costs. In practical applications, the one-piece molding process is not specifically limited, and can be other molding methods. As long as the process can achieve the one-piece molding of the pin and the metal lead and improve the manufacturing efficiency and connection stability, it belongs to the protection scope of the utility model.

[0046] In order to further improve the applicability of the plug rod 110, the thickness of the plug rod 110, the "V" knurled structure 111, the shoulder 140, the transition section 130 or the end 120 can be controlled by adjusting the flattening process parameters to meet the needs of different application scenarios. Through this technical means, the thickness of the plug rod 110 can be flexibly adjusted according to specific application scenarios and needs, thereby optimizing the connection performance of the pin. Such a design can ensure the stability and reliability of the plug rod 110 in different environments and improve the applicability and flexibility of the pin.

[0047] In order to further improve the corrosion resistance and environmental friendliness of the plug rod 110, the plug rod 110 is treated with an environmentally friendly electroplating process. This process can effectively form a protective film on the surface of the plug rod 110, provide good corrosion resistance, and extend the service life of the plug rod 110. At the same time, the environmentally friendly electroplating process meets environmental protection requirements, reduces pollution to the environment, and improves the environmental friendliness of the product.

[0048] Figures 1 to 3 In the embodiments, the alignment fixture is cylindrical as an example. In other embodiments, the shape of the end 120 can be round, square, or other geometric shapes in addition to the fisheye shape to meet different connection requirements and aesthetic requirements; the shape of the knurling structure 111 can be knurling of other shapes, such as serrated, annular, etc., in addition to the "V"-shaped knurling, to meet different friction and compression requirements; the number of "V"-shaped knurling can be increased or decreased in addition to four "V"-shaped knurlings to adjust the friction and compression between the pin and the mating component; the shape of the transition section 130 can be designed as a cone, a cone, or other shapes to meet the requirements of different connection environments and component structures; the shape of the shoulder 140 and the limit block can be designed as a protrusion, a groove, or other shapes to ensure the stable connection of the pin and prevent the pin from being too deep or too shallow. These different combinations can be selected according to specific application requirements to achieve the best connection effect and stability.

[0049] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A solder-free pin connected to a metal lead, characterized in that: The solder-free pin is integrally formed with the metal lead, and comprises an insertion rod and an end, one end of the insertion rod is connected to the metal lead, and the other end of the insertion rod is fixedly connected to the end.

2. The solder-free pin according to claim 1, characterized in that: The metal lead is a round metal lead.

3. The solder-free pin according to claim 2, characterized in that: The metal lead is a copper wire.

4. The solder-free pin according to claim 1, characterized in that: The end is a fish-eye shaped needle.

5. The solder-free pin according to claim 4, characterized in that: The number of the fish-eye-shaped needles is two.

6. The solder-free pin according to claim 1, characterized in that: The surface of the insertion rod is provided with a "V"-shaped knurling structure.

7. The solder-free pin according to claim 6, characterized in that: The "V"-shaped knurling structure consists of four "V"-shaped knurlings evenly distributed on the surface of the insertion rod.

8. The solder-free pin according to claim 1, characterized in that: A transition section is provided between the end head and the insertion rod, and the diameter of the transition section gradually increases from the insertion rod to the end head.

9. The solder-free pin according to claim 1, characterized in that: A shoulder is arranged between the end and the insertion rod, and protruding limit blocks are arranged on the left and right sides of the shoulder.

10. The solder-free pin according to any one of claims 1 to 9, characterized in that: The solder-free pin and the metal lead are integrally formed by a stamping process.

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