Board-to-wire connector
The board-to-wire connector design, which uses multi-ring sockets and nut-pressed wire connections, solves the problems of insufficient terminal insertion and extraction force and inconvenient replacement, improves insertion stability and service life, and reduces maintenance costs.
Patent Information
- Application Number
- CN202520301873.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-25
AI Technical Summary
The terminals of existing board-to-wire connectors are prone to insufficient insertion and extraction force after repeated insertion and removal, affecting contact conductivity. Furthermore, the terminals are inconvenient to replace, affecting service life and cost.
The terminals are designed with a multi-ring socket and a nut-pressed wire connection to ensure connection stability and durability, and allow for individual replacement of damaged terminals.
It achieves stable and durable connection, reduces the risk of circuit breakage, reduces maintenance costs, and improves service life and economy.
Smart Images
Figure CN223927725U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical connector technology, and in particular to a board-to-wire connector. Background Technology
[0002] A board-to-wire connector is a device that connects a circuit board to wires, primarily used for transmitting power and signals. It is widely used in various electronic devices, such as computers, communication equipment, televisions, and medical devices. A board-to-wire connector typically consists of two parts: a female connector for connecting the circuit board and a male connector for connecting the wires. When the male connector is inserted into the female connector, the corresponding terminals make contact, thus establishing a circuit connection. However, existing board-to-wire connectors have terminals arranged in rows within the connector interface. Repeated insertion and removal can lead to insufficient insertion force, affecting contact conductivity and even causing a complete lack of contact. Furthermore, the connector terminals are inconvenient to replace, impacting the connector's lifespan and operating costs. Summary of the Invention
[0003] The purpose of this utility model is to provide a board-to-wire connector that has a simple structure, is easy to manufacture and maintain, and has stable and durable connections with strong practicality.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A board-to-wire connector includes a female connector and a male connector with mating mating connections;
[0006] The female connector has a first insulating base and a first terminal. The first insulating base is fixed on the circuit board and has a circular insertion hole. An insulating central post extending along the insertion direction is provided in the circular insertion hole. A gap is left between the outer periphery of the insulating central post and the inner peripheral wall of the circular insertion hole. The first terminal is assembled on the insulating central post and is spaced around the center of the insulating central post. The first terminal has a solder part for connecting to the circuit board and a first contact part exposed from the outer peripheral surface of the insulating central post.
[0007] The male connector has a second insulating base and a second terminal. The shape and size of the second insulating base match the circular socket, and the interior of the second insulating base has a through socket for fitting an insulating center post. The second terminal is assembled on the second insulating base and is arranged at intervals around the center of the socket. The second terminal has a wire connection portion for connecting wires and a second contact portion exposed from the inner circumferential surface of the socket. The wire connection portion is detachably connected to the wire, and the second contact portion is used to make contact with the first contact portion for conduction.
[0008] When the second insulating base is inserted into the circular socket of the first insulating base, the socket hole engages with the insulating central post, and the second contact portion of the second terminal makes contact with the first contact portion of the first terminal to achieve electrical connection between the circuit board and the wire.
[0009] The above solution is further provided in that the insulating central column is provided with a terminal hole that passes through the insulating central column, and a clearance groove that connects to the terminal hole is provided on the outer peripheral surface of the insulating central column; the first terminal is directly inserted into the terminal hole, the solder part passes through the terminal hole and connects to the circuit board; and the first contact part is exposed through the clearance groove.
[0010] The above-mentioned solution further includes a groove on the inner circumferential wall of the socket of the second insulating base, a second terminal being inserted into the groove, and the wiring portion of the second terminal being bent and hooked onto the corresponding end of the second insulating base. A through hole is provided on the wiring portion, which is exactly aligned with a pre-set screw hole on the corresponding end of the second insulating base, so that the wiring portion can be locked onto the corresponding end of the second insulating base with a screw, and the wiring portion can be connected to the wire with the screw. The second contact portion of the second terminal is an arched elastic portion, and the end of the second contact portion is inserted into a pre-set limiting groove in the groove, so that the second contact portion is kept protruding from the inner circumferential surface of the socket.
[0011] The above solution is further described in that the first insulating seat is a sleeve-shaped body, the insulating central column and the first insulating seat are manufactured independently and coaxially mounted on the circuit board; one end of the first insulating seat is attached to the circuit board, and the attached end of the first insulating seat is provided with multiple harpoon feet, which are inserted into the mounting holes on the circuit board so that the first insulating seat is mounted on the circuit board; the insulating central column is connected to the circuit board through the soldering part of the first terminal to establish a fixed connection posture.
[0012] A further aspect of the above scheme is that a guide groove is provided on the inner peripheral wall of the circular insertion hole of the first insulating base. The guide groove is arranged at intervals around the center of the circular insertion hole on the inner peripheral wall of the circular insertion hole. The guide groove is used to cooperate with the guide ribs preset on the outer peripheral wall of the second insulating base. The number and position of the guide ribs match the guide groove.
[0013] By employing the above structure, this utility model achieves a multi-ring socket connection, with the terminals arranged in separate rings. This provides centripetal compression during insertion, resulting in a stable, durable, and highly practical connection. Furthermore, the use of a nut-pressed wire connection offers advantages over traditional soldered wire connections, including higher tensile strength, reduced risk of breakage, and easier replacement of the second terminal on the male connector. This allows for individual replacement and repair if a second terminal fails, significantly reducing subsequent maintenance costs. Attached Figure Description
[0014] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Appendix Figure 2 for Figure 1 Schematic diagram of the structural breakdown of the embodiment;
[0016] Appendix Figure 3 This is a schematic diagram illustrating the plug-in usage of this utility model;
[0017] Appendix Figure 4 for Figure 1 Cross-sectional view of the internal structure after insertion in the embodiment;
[0018] Appendix Figure 5 for Figure 1 A schematic diagram of the female connector structure in the embodiment. Detailed Implementation
[0019] 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.
[0020] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] See Figure 1 , 2 Figures 3, 4, and 5 are schematic diagrams of a preferred embodiment of this utility model. This utility model relates to a board-to-wire connector, including a female connector and a male connector for mating insertion, wherein:
[0022] The female connector has a first insulating base 1 and a first terminal 2. The first insulating base 1 is fixed on the circuit board 3 and has a circular insertion hole 11. An insulating central post 12 extending along the insertion direction is provided in the circular insertion hole 11. A gap is left between the outer periphery of the insulating central post 12 and the inner peripheral wall of the circular insertion hole 11 to allow for subsequent insertion. The first terminal 2 is assembled on the insulating central post 12 and spaced around the center of the insulating central post 12. The first terminal 2 has a soldering part 21 for connecting to the circuit board 3 and a first contact part 22 exposed from the outer peripheral surface of the insulating central post 12. The male connector has a second insulating base 4 and a second terminal 5. The shape and size of the second insulating base 4 match the circular socket 11, and the interior of the second insulating base 4 has a through socket 41 for connecting the insulating center post 12. The second terminal 5 is assembled on the second insulating base 4, and the second terminals 5 are arranged at intervals around the center of the socket 41. The second terminal 5 has a wiring portion 51 for connecting the wire 6 and a second contact portion 52 exposed from the inner circumferential surface of the socket 41. The wiring portion 51 connects the wire 6 detachably, and the second contact portion 52 is used to make contact with the first contact portion 22 for electrical connection. In use, the second insulating base 4 is inserted into the circular socket 11 of the first insulating base 1, the socket 41 is connected to the insulating center post 12, and the second contact portion 52 of the second terminal 5 makes contact with the first contact portion 22 of the first terminal 2, thereby realizing the electrical connection between the circuit board 3 and the wire 6.
[0023] In this embodiment, the insulating central column 12 is provided with a terminal hole 121 penetrating the insulating central column, and a relief groove 122 communicating with the terminal hole 121 is provided on the outer peripheral surface of the insulating central column 12. The first terminal 2 is a stamped sheet, which is directly inserted into the terminal hole 121 and secured by a barb, improving the assembly stability of the first terminal 2. The welding part 21 protrudes through the terminal hole 121 and connects to the circuit board 3, while the first contact part 22 is exposed through the relief groove 122 so as to make contact and conduct with the second contact part 52. In this embodiment, the first insulating seat 1 is a sleeve-shaped body. The insulating central column 12 and the first insulating seat 1 are manufactured independently and coaxially mounted on the circuit board 3, which facilitates manufacturing and assembly and reduces investment costs. One end of the first insulating base 1 is attached to the circuit board 3, and the attached end of the first insulating base 1 is provided with multiple harpoon feet 13. The multiple harpoon feet 13 are inserted into the mounting holes on the circuit board 3, and then the first insulating base 1 is installed on the circuit board 3 by welding or snap-fit. The insulating central column 12 is connected to the circuit board 3 through the welding part 21 of the first terminal 2 to establish a fixed connection posture.
[0024] The second insulating base 4 has a groove 42 on the inner circumferential wall of the socket hole 41. The second terminal 5 is a stamped irregular structure. The second terminal 5 is inserted into the groove 42, and the wiring part 51 of the second terminal 5 is bent and hooked onto the corresponding end of the second insulating base 4. A through hole 511 is provided on the wiring part 51, which is exactly aligned with the screw hole 43 preset on the corresponding end of the second insulating base 4. This allows the wiring part 51 to be locked onto the corresponding end of the second insulating base 4 by a screw 7, and the wiring part 51 to be connected to the wire 6 by the screw 7. The second contact part 52 of the second terminal 5 is an arched elastic part, and the end of the second contact part 52 is inserted into the preset limiting groove in the groove 42, so that the second contact part 52 is kept protruding from the inner circumferential surface of the socket hole 41. This structure not only satisfies the requirements of stable assembly and convenient wiring of the second terminal 5, but also allows for disassembly and replacement. In this embodiment, the screw hole 43 can be constructed by a thermoplastic nut, which is convenient to manufacture and has good structural integrity.
[0025] In this embodiment, a guide groove 14 is provided on the inner peripheral wall of the circular insertion hole 11 of the first insulating base 1. The guide groove 14 is arranged at intervals around the center of the circular insertion hole on the inner peripheral wall of the circular insertion hole 11. The guide groove 14 is used to cooperate with the guide ribs 44 preset on the outer peripheral wall of the second insulating base 4. The number and position of the guide ribs 44 match the guide groove 14. Through the cooperation and guidance of the guide ribs 44 and the guide groove 14, it is not only convenient for the second insulating base 4 to be inserted into the circular insertion hole 11 of the first insulating base 1, ensuring the conductive connection of the first terminal 2 and the second terminal 5, but also increases the structural integrity of the connection.
[0026] Testing has shown that this invention utilizes a circular structure to achieve a multi-ring interlocking connection, with the terminals arranged in separate rings. This provides centripetal compression during insertion, resulting in a stable, durable, and highly practical connection. Furthermore, the use of a nut-pressed wire connection offers advantages over traditional soldered wire connections, including higher tensile strength, reduced risk of breakage, and easier replacement of the second terminal on the male connector. This allows for individual replacement and repair if a second terminal fails, significantly reducing subsequent maintenance costs.
[0027] 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 board-to-wire connector, comprising a female connector and a male connector which are mated with each other, characterized in that: the female connector has a first insulating housing (1) and first terminals (2), the first insulating housing (1) is fixed on a circuit board (3), and the first insulating housing (1) is provided with a circular insertion hole (11) in which an insulating post (12) extending in the mating direction is arranged, and the outer periphery of the insulating post (12) is spaced from the inner periphery of the circular insertion hole (11); the first terminals (2) are assembled on the insulating post (12) and are arranged at intervals around the center of the insulating post (12), and the first terminals (2) have soldering portions (21) connected to the circuit board (3) and first contact portions (22) exposed from the outer periphery of the insulating post (12); the male connector has a second insulating housing (4) and second terminals (5), the second insulating housing (4) is matched with the circular insertion hole (11) in shape and size, and the second insulating housing (4) is provided with a through sleeve hole (41) for sleeving the insulating post (12); the second terminals (5) are assembled on the second insulating housing (4) and are arranged at intervals around the center of the sleeve hole (41), and the second terminals (5) have wiring portions (51) connected to a wire (6) and second contact portions (52) exposed from the inner periphery of the sleeve hole (41); the wiring portions (51) are connected to the wire (6) by a detachable connection, and the second contact portions (52) are used for contacting and conducting with the first contact portions (22); when the second insulating housing (4) is inserted into the circular insertion hole (11) of the first insulating housing (1), the sleeve hole (41) sleeves the insulating post (12), and the second contact portions (52) of the second terminals (5) contact and conduct with the first contact portions (22) of the first terminals (2), thereby realizing electrical connection between the circuit board (3) and the wire (6). The insulating post (12) is provided with a terminal hole (121) penetrating the insulating post, and is provided with an avoidance groove (122) on the outer periphery of the insulating post (12) and communicating with the terminal hole (121); the first terminals (2) are directly inserted into the terminal hole (121), the soldering portions (21) pass through the terminal hole (121) and are connected to the circuit board (3), and the first contact portions (22) are exposed through the avoidance groove (122). 2. The board-to-wire connector of claim 1, wherein, 3. The board-to-wire connector of claim 1, wherein, The inner circumferential wall of the sleeve joint hole (41) of the second insulating seat (4) is provided with a groove (42), the second terminal (5) is inserted and assembled in correspondence with the groove (42), and the wiring part (51) of the second terminal (5) is bent and hung on the corresponding end of the second insulating seat (4), and a through hole (511) is provided on the wiring part (51), which is in communication with the corresponding threaded hole (43) on the end of the second insulating seat (4), so as to lock the wiring part (51) on the corresponding end of the second insulating seat (4) by using a screw (7), and connect the wiring part (51) and the wire (6) together by using the screw (7); the second contact part (52) of the second terminal (5) is an arched elastic part, and the end of the second contact part (52) is inserted into the limiting groove provided in the groove (42), so that the second contact part (52) remains in a position protruding from the inner circumferential surface of the sleeve joint hole (41).
4. The board-to-wire connector of claim 1, wherein, The first insulating seat (1) is a sleeve-shaped body, the insulating column (12) and the first insulating seat (1) are independently manufactured and coaxially installed on the circuit board (3); one end of the first insulating seat (1) is attached to the circuit board (3), and a plurality of fish fork feet (13) are provided on the attached end of the first insulating seat (1), the plurality of fish fork feet (13) are inserted into the mounting hole on the circuit board (3), so that the first insulating seat (1) is installed on the circuit board (3); the insulating column (12) is fixedly connected to the circuit board (3) through the welding part (21) of the first terminal (2).
5. A board-to-wire connector according to claim 1 or 4, wherein The inner circumferential wall of the circular insertion hole (11) of the first insulating seat (1) is provided with a guide groove (14), which is arranged on the inner circumferential wall of the circular insertion hole (11) around the center of the circular insertion hole; the guide groove (14) is used for cooperating with the guide rib (44) provided on the outer circumferential wall of the second insulating seat (4), and the number and position of the guide rib (44) are matched with the guide groove (14).