PCB self-locking terminal

Abstract

The utility model relates to a PCB self-locking terminal, which is provided with a frame-shaped conductive main body and a pair of elastic cantilevers used for clamping a conductor, the pair of elastic cantilevers are connected to the frame-shaped conductive main body and extend towards the inside of the frame-shaped conductive main body, and the pair of elastic cantilevers extend towards the direction far away from the insertion end of an insertion hole and gradually approach to form a clamping opening. The clamping opening and the plugging hole in the frame-shaped conductive main body are coaxially arranged; and an unlocking part is arranged on the frame-shaped conductive main body, and the unlocking part opens the clamping opening by itself or in cooperation with an external tool, so that the elastic cantilever releases the conductor. According to the utility model, the risk of plastic deformation of the elastic cantilever can be effectively reduced, the clamping opening of the elastic cantilever is opened by using the unlocking part or cooperating with an external tool during disassembly, so that the elastic cantilever releases the conductor, the conductor can be disassembled, and the adverse effect caused by pulling out with force is reduced; therefore, the wiring convenience of the PCB is improved, the terminal is detachable and replaceable, and the terminal can provide reliable electric connectivity and durability at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a conductive terminal used on a PCB board. Background Art

[0002] Traditional PCB board wiring is to solder the wires on the PCB board. This mode is not easy to disassemble and maintain after assembly. Subsequently, conductive terminals that are electrically connected to the wires in a clamping manner appeared, which is convenient for installation with the wires. However, this type of conductive terminal mainly uses the elasticity of the elastic cantilever for assembly and disassembly, that is, it is assembled by inserting with force or removed by pulling out with force. In order to facilitate pulling out, the elasticity of the elastic cantilever is usually not too large. Such a design not only has insufficient clamping force, but also causes the elastic cantilever to easily undergo plastic deformation during vibration. Once the elastic cantilever undergoes plastic deformation, the electrical contact between the conductive terminal and the wire will become unreliable or fail. Summary of the invention

[0003] The utility model aims to provide a PCB self-locking terminal, which increases the clamping stability and facilitates disassembly and assembly.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] PCB self-locking terminal, which has:

[0006] A frame-shaped conductive body, the frame-shaped conductive body encloses a plug-in hole for the conductor to be inserted into the assembly; and

[0007] a pair of elastic cantilevers for clamping the conductor;

[0008] The pair of elastic cantilevers are connected to the frame-shaped conductive body and extend toward the inside of the frame-shaped conductive body, the pair of elastic cantilevers extend toward the insertion end away from the plug hole and gradually approach to form a clamping opening, and the clamping opening is coaxially arranged with the plug hole on the frame-shaped conductive body; and

[0009] An unlocking portion is provided on the frame-shaped conductive body, and the unlocking portion can open the clamping mouth by itself or in cooperation with an external tool, so that the elastic cantilever releases the conductor.

[0010] The above scheme further has the following features: the elastic cantilever is a structure formed by bending the remaining material cut from the corresponding side surfaces of the frame-shaped conductive body inwardly, and the inner side surface of the elastic cantilever is provided with a clamping portion that embraces the conductor.

[0011] The above scheme is further that the frame-shaped conductive body is in the shape of a box extending along the plug-in direction, a welding surface is provided at the bottom of the frame-shaped conductive body, and the unlocking portion is a through hole located at the top of the frame-shaped conductive body, and the unlocking portion is located directly above the clamp so that the unlocking portion cooperates with an external tool to open the clamp.

[0012] The above scheme is further that the elastic cantilever is separated on the left and right sides of the conductor insertion direction and is in a sideways posture, and the height dimension of the elastic cantilever in the sideways direction is greater than the outer diameter of the clamped part of the conductor, and the clamping part of the elastic cantilever is a bracket groove formed by local stamping of the inner side surface of the elastic cantilever.

[0013] The above solution is further that the welding surface is provided with concave tin-eating portions, and the tin-eating portions are arranged in an array on the welding surface.

[0014] The above scheme is further that the corresponding end of the frame-shaped conductive body is provided with an insertion limiting baffle, which is away from the insertion end of the plug hole and directly faces the clamping opening.

[0015] The above scheme is further that the frame-shaped conductive body is in the shape of a rectangular box, so that the insertion opening of the plug hole of the frame-shaped conductive body forms four limiting walls.

[0016] The utility model adopts a pair of elastic cantilevers to clamp the conductor, and an unlocking part is provided on the frame-shaped conductive body. The unlocking part itself or a cooperating external tool opens the clamping mouth of the elastic cantilever so that the elastic cantilever releases the conductor. Such a design makes the elasticity of the pair of elastic cantilevers large enough, thereby effectively reducing the risk of plastic deformation of the elastic cantilever. When disassembling, the unlocking part itself or a cooperating external tool is used to open the clamping mouth of the elastic cantilever so that the elastic cantilever releases the conductor, and the conductor can be removed, thereby reducing the adverse effects caused by pulling out with force.

[0017] The utility model improves the convenience of PCB board wiring and is also detachable, while the terminals can provide reliable electrical connectivity and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the utility model;

[0019] Attached Figure 2 , 3 for Figure 1 Another perspective structural diagram of;

[0020] Attached Figure 4 for Figure 1 Schematic diagram of embodiment and conductor combination structure;

[0021] Attached Figure 5 It is a schematic diagram of disassembly implementation of the utility model. DETAILED DESCRIPTION

[0022] The concept, specific structure and technical effects of the utility model will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the utility model.

[0023] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] See also Figure 1 , 2 , 3, 4, and 5 are schematic diagrams of preferred embodiments of the present invention. The present invention is related to a PCB self-locking terminal, which has a frame-shaped conductive body 1, preferably the frame-shaped conductive body 1 is formed by stamping a plate, and the frame-shaped conductive body 1 is enclosed to form a plug-in hole 11 for inserting and assembling a conductor 3; and a pair of elastic cantilevers 2 for clamping the conductor 3. The pair of elastic cantilevers 2 are connected to the frame-shaped conductive body 1 and extend toward the inside of the frame-shaped conductive body 1, and the pair of elastic cantilevers extend in the direction away from the insertion end of the plug-in hole 11 and gradually approach to form a clamp 21, which is coaxially arranged with the plug-in hole 11 on the frame-shaped conductive body 1, and clamps the conductor 3 by gradually approaching; the conductor 3 can be a wire or a conductive metal part. This embodiment takes the wire as an example. When inserting and assembling, the outer sheath of the wire is first peeled off to expose the inner core and then inserted into the plug-in hole 11 for assembly. The wire can be a single-core wire, a multi-core twisted wire, etc., which is not limited here. The clamping opening 21 is coaxially arranged with the plug hole 11, which is convenient for inserting and assembling the conductor 3. An unlocking portion 12 is arranged on the frame-shaped conductive body 1, and the unlocking portion 12 can open the clamping opening 21 by itself or with an external tool, so that the elastic cantilever 2 releases the conductor 3, and the conductor can be pulled out, thereby reducing the adverse effects caused by pulling out with force.

[0025] Figure 1 , 2 As shown in Figures 3, 4, and 5, in this embodiment, the elastic cantilever 2 is made by bending the remaining material cut from the corresponding side of the frame-shaped conductive body 1 inwardly, and is made in one piece. It is not only convenient to make the elastic cantilever 2, but also the elastic cantilever 2 has a stable structure, good elasticity, and durability. In this embodiment, a clamping portion 22 that surrounds the conductor 3 is provided on the inner side of the elastic cantilever 2 to obtain an embracing contact connection, increase the contact points, and improve the electrical connectivity. In this embodiment, the elastic cantilever 2 is separated on the left and right sides of the insertion direction of the conductor 3 and is in a side-standing posture, and the height dimension of the elastic cantilever 2 in the side-standing direction is greater than the outer diameter of the clamped part of the conductor 3, which increases the structural elasticity and clamping space of the elastic cantilever 2; the clamping portion 22 of the elastic cantilever 2 is a bracket groove formed by local stamping of the inner side of the elastic cantilever 2, which adapts to the outer contour of the conductor, not only increases the clamping contact surface, but also can better match the conductor shape and improve the clamping stability.

[0026] Figure 1 , 2 As shown in Figures 3, 4 and 5, in this embodiment, the frame-shaped conductive body 1 is in the shape of a box extending along the plug-in direction. Preferably, the frame-shaped conductive body 1 is in the shape of a rectangular box, so that the insertion port of the plug-in hole 11 of the frame-shaped conductive body 1 forms four limiting walls, which can be used to fit and limit the outer sheath on the wire, thereby increasing the stability of the wire insertion connection. A welding surface 13 is provided at the bottom of the frame-shaped conductive body 1 for upper plate bonding welding. At the same time, in this embodiment, a concave tin-eating portion 131 is provided on the welding surface 13, and the tin-eating portion 131 is arranged in an array on the welding surface 13, thereby increasing the welding firmness and improving the terminal plug-in connection performance. The unlocking portion 12 is a through hole located at the top of the frame-shaped conductive body 1, and the unlocking portion 12 is located directly above the clamp 21, so that the unlocking portion 12 cooperates with the external tool 4 to open the clamp 21. As shown Figure 5 As shown, an external tool 4 (which may be a screwdriver or an awl, etc.) is inserted from top to bottom through the unlocking portion 12, and the elastic cantilever is pushed to open the clamping openings 21 of a pair of elastic cantilevers, so that the elastic cantilever 2 releases the conductor 3, and the conductor can be pulled out, thereby reducing the adverse effects caused by forcible pulling out. Of course, it is not ruled out that the unlocking portion 12 is a pressing piece constructed on the frame-shaped conductive body 1, and the clamping opening 21 is opened between the pressing pieces to facilitate disassembly.

[0027] Figure 1 , 2 As shown in Figures 3, 4 and 5, in this embodiment, the corresponding end of the frame-shaped conductive body 1 is provided with an insertion limiting baffle 14, which is away from the insertion end of the plug-in hole 11 and directly opposite to the clamp 21. The insertion limiting baffle 14 can effectively prevent excessive insertion of the conductor and avoid assembly accidents.

[0028] The utility model adopts a pair of elastic cantilever to clamp the conductor, and an unlocking part is provided on the frame-shaped conductive body. The unlocking part itself or cooperates with an external tool to open the clamping mouth of the elastic cantilever so that the elastic cantilever releases the conductor. This design makes the elasticity of the pair of elastic cantilever large enough, so as to effectively reduce the risk of plastic deformation of the elastic cantilever. When disassembling, the unlocking part itself or cooperates with an external tool to open the clamping mouth of the elastic cantilever so that the elastic cantilever releases the conductor, and the conductor can be removed, reducing the adverse effects caused by pulling out with force. The utility model improves the convenience of PCB board wiring, and is also detachable, and the terminal can provide reliable electrical connectivity and durability.

[0029] Although the preferred specific embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention should not be limited to the structures and operations that are exactly the same as the above description and the accompanying drawings. For those skilled in the art, many equivalent improvements and changes 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 changes should all fall within the scope of protection required by the present invention.

Claims

1. PCB self-locking terminal, characterized in that: have: A frame-shaped conductive body (1), the frame-shaped conductive body (1) enclosing a plug-in hole (11) for inserting a matching conductor (3) into the assembly; and A pair of elastic cantilevers (2) for clamping the conductor (3); The pair of elastic cantilevers are connected to the frame-shaped conductive body (1) and extend toward the interior of the frame-shaped conductive body (1); the pair of elastic cantilevers extend in a direction away from the insertion end of the plug hole (11) and gradually approach each other to form a clamping opening (21); the clamping opening (21) is coaxially arranged with the plug hole (11) on the frame-shaped conductive body (1); and An unlocking portion (12) is provided on the frame-shaped conductive body (1), and the unlocking portion (12) opens the clamping opening (21) by itself or in cooperation with an external tool, so that the elastic cantilever (2) releases the conductor (3).

2. The PCB self-locking terminal according to claim 1, characterized in that: The elastic cantilever (2) is formed by bending the remaining material cut from the corresponding side surface of the frame-shaped conductive body (1) inwardly, and the inner side surface of the elastic cantilever (2) is provided with a clamping portion (22) that embraces the conductor (3).

3. The PCB self-locking terminal according to claim 1, characterized in that: The frame-shaped conductive body (1) is in the form of a box extending along the plugging direction. A welding surface (13) is provided at the bottom of the frame-shaped conductive body (1), and the unlocking portion (12) is a through hole located at the top of the frame-shaped conductive body (1). The unlocking portion (12) is located directly above the clamping opening (21), so that the unlocking portion (12) cooperates with an external tool to open the clamping opening (21).

4. The PCB self-locking terminal according to claim 2, characterized in that: The elastic cantilever (2) is located on the left and right sides of the conductor (3) insertion direction and is in a sideways posture, and the height dimension of the elastic cantilever (2) in the sideways direction is greater than the outer diameter of the clamped portion of the conductor (3), and the clamping portion (22) of the elastic cantilever (2) is a bracket groove formed by local stamping of the inner side surface of the elastic cantilever (2).

5. The PCB self-locking terminal according to claim 3, characterized in that: The welding surface (13) is provided with an inwardly concave tin-eating portion (131), and the tin-eating portions (131) are arranged in an array on the welding surface (13).

6. The PCB self-locking terminal according to claim 3, characterized in that: The corresponding end of the frame-shaped conductive body (1) is provided with an insertion limiting baffle (14), which is away from the insertion end of the plug hole (11) and directly faces the clamping opening (21).

7. The PCB self-locking terminal according to claim 3, characterized in that: The frame-shaped conductive body (1) is in the shape of a rectangular box, so that the insertion opening of the plug hole (11) of the frame-shaped conductive body (1) forms four limiting walls.

Images