Pressure-free self-locking wiring terminal

Abstract

The utility model discloses a pressure-free self-locking wiring terminal, which comprises a hollow cavity, the lower end of the hollow cavity is open, the upper end of the hollow cavity is fixedly connected with a joint, a fixing body is movably arranged in the hollow cavity, the upper end of the fixing body is sleeved with a spring, and the upper end of the spring is in contact with the top surface in the hollow cavity. A hollow cavity is arranged in the fixing body, a plurality of metal balls are movably arranged on the side wall of the fixing body close to the bottom, the metal balls roll between the fixing body and the inner wall of the hollow cavity, the upper space in the hollow cavity is wide, and the lower space in the hollow cavity is gradually narrowed. A user only needs to insert a wire to complete connection, the operation process is greatly simplified, the operation difficulty is reduced, even a person without professional skills can easily operate, the working efficiency is remarkably improved, and the wire can be tightly locked through cooperation of the spring, the fixing body, the metal ball and the unique structure of the hollow cavity to ensure stable circuit connection.

Description

Technical Field

[0001] This utility model relates to the technical field of terminal block devices, specifically to a pressure-free self-locking terminal block. Background Technology

[0002] In the field of electrical connections, terminal blocks are key components for achieving wire connections. Existing terminal blocks mainly come in two structures: screw-fit and snap-fit. Screw-fit terminals require the use of screwdrivers or other tools to tighten screws to secure the wires, making the process cumbersome. Snap-fit ​​terminals also require additional tools to apply pressure to complete the locking action.

[0003] Some self-locking terminal blocks rely on complex mechanical structures with numerous parts, making assembly difficult and prone to failure due to component wear during use. Others utilize material deformation for self-locking, but frequent operation leads to material fatigue, resulting in reduced self-locking performance, short service life, and unreliable reliability. Therefore, developing a terminal block that is easy to operate and highly reliable is of significant practical importance. Utility Model Content

[0004] (I) Technical Issues

[0005] This invention provides a pressure-free self-locking terminal block to solve the problems of cumbersome operation and low reliability of existing terminal blocks.

[0006] (II) Technical Content

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a pressure-free self-locking terminal block, including a hollow cavity, the lower end of which is open and the upper end of which is fixedly connected to a connector. A fixed body is movably disposed inside the hollow cavity, and a spring is sleeved on the upper end of the fixed body. The upper end of the spring contacts the top surface inside the hollow cavity. Multiple metal balls are movably disposed on the side wall of the fixed body near the bottom. The metal balls roll between the fixed body and the inner wall of the hollow cavity. The upper space inside the hollow cavity is wider and the lower space gradually narrows.

[0008] Furthermore, the fixing body is a cylinder with an open bottom. Three movable grooves are evenly distributed along the circumference of the side wall of the fixing body. The metal ball is movably disposed in the movable groove. One end of the movable groove near the inner side wall of the fixing body is provided with a limiting protrusion to prevent the metal ball from falling out. The other end of the metal ball rolls in contact with the inner wall of the hollow cavity.

[0009] Furthermore, the hollow cavity is cylindrical, and the diameter of its internal space gradually decreases from top to bottom.

[0010] Furthermore, the outer side of the fixing body is provided with a boss for mounting the spring.

[0011] Furthermore, the connector is either round or flat, and both the connector and the hollow cavity are made of copper.

[0012] Furthermore, the lower end of the hollow cavity is provided with a blocking block to prevent the fixed body from sliding down and falling out.

[0013] (III) Technical Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. Simple and convenient operation: It abandons the traditional terminal block operation mode that relies on external tools. Users only need to insert the wire to complete the connection, which greatly simplifies the operation process and reduces the difficulty of operation. Even people without professional skills can easily get started and significantly improve work efficiency.

[0016] 2. Stable and reliable connection: Through the coordinated operation of springs, fixing bodies, metal balls, and a unique hollow cavity structure, the wires are firmly locked in place, ensuring a stable circuit connection. The overall structural design is simple, reducing the use of complex components and lowering the risk of failure due to component wear and damage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the pressure-free self-locking terminal block of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the pressure-free self-locking terminal block of this utility model in use.

[0019] Figure 3 This is a schematic diagram of area A of the pressure-free self-locking terminal block of this utility model.

[0020] As shown in the figure: 1. Hollow cavity; 2. Connector; 3. Fixing body; 4. Spring; 5. Metal ball; 6. Movable groove; 7. Limiting protrusion; 8. Boss; 9. Blocking block; 10. Wire connector. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Combined with appendix Figure 1 To be continued Figure 3 The pressure-free self-locking terminal block includes a hollow cavity 1. The lower end of the hollow cavity 1 is open and the upper end is fixedly connected to a connector 2. The connector 2 is a round head or a flat head. Both the connector 2 and the hollow cavity 1 are made of copper. A fixed body 3 is movably installed inside the hollow cavity 1. A spring 4 is sleeved on the upper end of the fixed body 3. The upper end of the spring 4 contacts the inner top surface of the hollow cavity 1. A plurality of metal balls 5 are movably installed on the side wall of the fixed body 3 near the bottom. The metal balls 5 roll between the fixed body 3 and the inner wall of the hollow cavity 1. The upper space inside the hollow cavity 1 is wider and the lower space gradually narrows. A blocking block 9 is provided at the lower end of the hollow cavity 1 to prevent the fixed body 3 from sliding down and falling out.

[0025] The fixing body 3 is a cylinder with an open bottom. Three movable grooves 6 are evenly distributed along the circumference of the side wall of the fixing body 3. The metal ball 5 is movably disposed in the movable groove 6. One end of the movable groove 6 near the inner side wall of the fixing body 3 is provided with a limiting protrusion 7 to prevent the metal ball 5 from falling out. The other end of the metal ball 5 is in rolling contact with the inner wall of the hollow cavity 1. The outer side of the fixing body 3 is provided with a boss 8 for sleeved spring 4.

[0026] The hollow cavity 1 is cylindrical, and the diameter of its internal space gradually decreases from top to bottom.

[0027] The working principle of this utility model is as follows: by utilizing the internal space structure of the hollow cavity 1, which is wider at the top and narrower at the bottom, and in combination with the synergistic effect of the fixing body 3, the spring 4 and the metal ball 5, when the wire is inserted, the position of the metal ball 5 is changed by the up and down movement of the fixing body 3, thereby realizing the unlocking and self-locking of the wire.

[0028] The working process of this utility model is as follows:

[0029] 1. Initial state: The terminals are unconnected, and the spring 4 is in a naturally extended state, providing a downward thrust to the fixing body 3, keeping it in a position close to the lower part of the hollow cavity 1. At this time, the metal balls 5 are partially exposed on the side wall of the fixing body 3 and roll in contact with the inner wall of the hollow cavity 1. Due to the narrow space at the bottom of the hollow cavity 1, the metal balls 5 move closer together.

[0030] 2. Wire Insertion: Insert the stripped wire upwards through the opening at the lower end of the hollow cavity 1. The wire first contacts the metal ball 5 at the lower end of the fixing body 3, pushing the fixing body 3 upwards against the metal ball 5. During the upward movement of the fixing body 3, the spring 4 is compressed, causing the spring 4 to compress and store elastic potential energy. Because the upper space of the hollow cavity 1 is relatively wide, during the upward movement of the fixing body 3, the three metal balls 5 move outwards along the movable groove 6 on the side wall of the fixing body 3. At this time, the wire is not blocked by the metal balls 5 and can smoothly pass through the metal balls 5 to insert into the interior of the fixing body 3.

[0031] 3. Self-locking formation: When the external force squeezing the wire disappears, the compressed spring 4 recovers its deformation and pushes the fixing body 3 downward. As the fixing body 3 moves downward, due to the narrow space at the bottom of the hollow cavity 1, the three metal balls 5 come together under the pressure of the inner wall of the hollow cavity 1, tightly locking the wire and achieving a stable connection between the wire and the terminal.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pressure-free self-locking terminal block, comprising a hollow cavity (1), wherein the lower end of the hollow cavity (1) is open and the upper end is fixedly connected to a connector (2), characterized in that: The hollow cavity (1) is equipped with a fixed body (3) inside. A spring (4) is sleeved on the upper end of the fixed body (3). The upper end of the spring (4) contacts the top surface inside the hollow cavity (1). Multiple metal balls (5) are movably arranged on the side wall of the fixed body (3) near the bottom. The metal balls (5) roll between the fixed body (3) and the inner wall of the hollow cavity (1). The upper space inside the hollow cavity (1) is wider and the lower space gradually narrows.

2. The pressure-free self-locking terminal block according to claim 1, characterized in that: The fixed body (3) is a cylinder with an open bottom. Three movable grooves (6) are evenly distributed along the circumference of the side wall of the fixed body (3). The metal ball (5) is movably disposed in the movable groove (6). One end of the movable groove (6) near the inner side wall of the fixed body (3) is provided with a limiting protrusion (7) to prevent the metal ball (5) from falling out. The other end of the metal ball (5) is in rolling contact with the inner wall of the hollow cavity (1).

3. The pressure-free self-locking terminal block according to claim 1, characterized in that: The hollow cavity (1) is cylindrical, and the diameter of its internal space gradually decreases from top to bottom.

4. The pressure-free self-locking terminal block according to claim 2, characterized in that: The outer side of the fixing body (3) is provided with a boss (8) for mounting the spring (4).

5. The pressure-free self-locking terminal block according to claim 1, characterized in that: The connector (2) is round or flat, and both the connector (2) and the hollow cavity (1) are made of copper.

6. The pressure-free self-locking terminal block according to claim 1, characterized in that: The hollow cavity (1) is provided with a blocking block (9) at the lower end to prevent the fixed body (3) from sliding out.

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