Anti-loose wire terminal

Abstract

The utility model discloses a kind of anti-loose wire terminals, including support plate, support plate both ends are equipped with resistance and pressure unit, two resistance and pressure units are connected with winding unit, resistance and pressure unit includes fastening bolt, top screw joint pipe and bottom screw joint pipe are screwed on fastening bolt, top screw joint pipe is located on the upper end of bottom screw joint pipe, spring and pressing sheet are movably set on the upper end of top screw joint pipe on fastening bolt, hand screw cap is screwed on the top end of fastening bolt, spring is located between hand screw cap and pressing sheet, pressing sheet bottom is equipped with U type limit buckle, U type limit buckle is connected with winding unit, so that wire passes through from the crack of screw joint sleeve and is wound on screw joint sleeve, then screw joint cap is tightened to make it compress wire, this structure can effectively prevent wire loosening in long-term use.

Description

Technical Field

[0001] This utility model belongs to the technical field of anti-loosening wire terminals, specifically relating to an anti-loosening wire terminal. Background Technology

[0002] Terminal blocks are used for wire connection. Existing terminal blocks are mostly crimped, and the wires are prone to loosening due to their own weight. Furthermore, the terminals after the wires are connected are exposed outside the protective structure, making them susceptible to loosening due to the expansion of external objects, which in turn affects the connection effect. CN222146614U discloses a wire anti-loosening mechanism for terminal blocks. Its principle is to push two clamps to hold the wires on both sides of the wires to fix the wires at the interface. However, this fixing method is prone to loosening of the clamps during long-term use, causing the wires to fall off. Moreover, the exposed wires are prone to accumulating dust, which affects the use.

[0003] To address the aforementioned issues, this application proposes an anti-loosening wire terminal block. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A wire terminal block designed to prevent loosening includes a support plate, with pressing units at both ends of the support plate, and winding units connected to the two pressing units. The terminal block is characterized in that:

[0006] The pressing unit includes a fastening bolt, on which a top screw connector and a bottom screw connector are screwed. The top screw connector is located at the upper end of the bottom screw connector. A spring and a pressure plate are movably sleeved on the fastening bolt and located at the upper end of the top screw connector. A hand-tightening cap is screwed to the top of the fastening bolt. The spring is located between the hand-tightening cap and the pressure plate. A U-shaped limiting buckle is provided at the bottom of the pressure plate. The pressing unit is connected to the winding unit through the U-shaped limiting buckle.

[0007] The support plate is movably inserted at both ends onto the fastening bolts. The top and bottom screw connectors are located at the upper and lower ends of the support plate, respectively. When the top and bottom screw connectors rotate relative to each other, they clamp the support plate.

[0008] The winding unit includes a U-shaped connecting buckle that cooperates with the U-shaped limiting buckle. The U-shaped connecting buckle is snapped into the U-shaped limiting buckle. A threaded connector is provided on the other end of the U-shaped connecting buckle relative to the fastening bolt. A threaded sleeve for winding the wire is fixed at the front end of the threaded connector. A threaded cap for pressing the wire is screwed onto the threaded sleeve.

[0009] The winding unit is hung on the fastening bolt on the pressing unit via the U-shaped connecting buckle and is locked in the U-shaped limiting buckle. The pressing unit presses the U-shaped limiting buckle, thereby fixing the winding unit.

[0010] Preferably, a sealing plate is provided on one end of the screw connector near the U-shaped connecting buckle, and a dustproof sleeve is screwed onto the screw connector. One end of the dustproof sleeve is pressed onto the sealing plate, and the other end is provided with a rubber sheet.

[0011] Preferably, the top surface of the top screw pipe is provided with multiple anti-slip textures distributed along the circumferential direction.

[0012] Preferably, the outer surface of the dustproof sleeve is provided with multiple anti-slip raised strips.

[0013] Preferably, the diameter of the compression plate is larger than the diameter of the top screw-in tube.

[0014] Preferably, the two ends of the spring abut against the hand-tightening cap and the pressure plate, respectively.

[0015] Preferably, the screw sleeve is a tubular structure with two fan-shaped fittings.

[0016] Preferably, a nut is screwed onto the lower end of the fastening bolt.

[0017] Compared with the prior art, the technical effects and advantages of this utility model are:

[0018] 1. By turning the hand-tightening cap counterclockwise, the spring force is reduced, pushing the pressure plate upward so that the U-shaped connecting buckle is engaged with the fastening bolt. Adjust the position of the U-shaped connecting buckle so that it is locked in the U-shaped limit buckle to prevent the winding unit from loosening. Loosen the pressure plate so that the pressure plate is pressed against the U-shaped connecting buckle by the spring force. Then turn the hand-tightening cap clockwise so that the pressure plate presses the U-shaped connecting buckle tightly against the upper end of the top screw tube, thus limiting and fixing it.

[0019] 2. When using, first remove the dustproof sleeve and screw cap, and let the wire pass through the rubber sheet, dustproof sleeve, screw sleeve and screw cap. Then peel off the outer insulation sheath of the wire, let the exposed copper strip pass through the gap of the screw sleeve and wrap around the screw sleeve. Then screw the screw cap clockwise to press the copper strip tight, and then screw the dustproof sleeve clockwise to complete the installation. This structure can effectively prevent the wire from loosening during long-term use.

[0020] 3. When maintenance personnel need to disassemble the wires, they can directly twist the cap by hand, push the pressure plate upward, and remove the U-shaped connecting clip to separate the pressure unit and the winding unit, thus separating the wires from the terminals. It is not necessary to completely disassemble the pressure unit and the winding unit, which improves the disassembly and assembly efficiency and is beneficial to maintenance work. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This describes the connection relationship between the winding unit and the top screw connector;

[0023] Figure 3 This is a structural diagram of the winding unit of this utility model;

[0024] Figure 4 This is a diagram showing the positional relationship of the U-shaped limiting buckle of this utility model;

[0025] Figure 5 This is a diagram showing the positional relationship of the anti-slip texture of this utility model.

[0026] In the diagram: 1. Fastening bolt; 2. Top screw-in connector; 3. Bottom screw-in connector; 4. Support plate; 5. Nut; 6. Hand-tightening cap; 7. Spring; 8. Pressure plate; 9. Dustproof sleeve; 10. Rubber sheet; 11. Threaded connector; 12. Sealing plate; 13. Threaded sleeve; 14. Threaded cap; 15. U-shaped connecting buckle; 16. Anti-slip texture; 17. U-shaped limit buckle; 20. Wire. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0029] This application discloses an anti-loosening wire terminal block, comprising a support plate 4, with pressing units at both ends of the support plate 4, and winding units for winding and fixing the wire 20 connected to the two pressing units.

[0030] The pressing unit includes a fastening bolt 1, a top screw-in connector 2, a bottom screw-in connector 3, a hand-tightening cap 6, a spring 7, a pressure plate 8, and a U-shaped limiting buckle 17. The fastening bolt 1 is screwed with the top screw-in connector 2 and the bottom screw-in connector 3. The top screw-in connector 2 is located at the upper end of the bottom screw-in connector 3. The fastening bolt 1 is movably fitted with the spring 7 and the pressure plate 8 at the upper end of the top screw-in connector 2. The diameter of the pressure plate 8 is larger than the diameter of the top screw-in connector 2. The top of the fastening bolt 1 is screwed with the hand-tightening cap 6. The spring 7 is located between the hand-tightening cap 6 and the pressure plate 8. The two ends of the spring 7 abut against the hand-tightening cap 6 and the pressure plate 8, respectively. The bottom of the pressure plate 8 is provided with a U-shaped limiting buckle 17, and the U-shaped limiting buckle 17 is connected to a winding unit.

[0031] The two ends of the support plate 4 are movably inserted through the fastening bolts 1. The top screw pipe 2 and the bottom screw pipe 3 are located at the upper and lower ends of the support plate 4, respectively. When the top screw pipe 2 and the bottom screw pipe 3 rotate relative to each other, they clamp the support plate 4.

[0032] The winding unit includes a screw connector 11, a screw sleeve 13, a screw cap 14, and a U-shaped connecting clip 15. The U-shaped connecting clip 15 is locked inside a U-shaped limiting clip 17, which prevents the U-shaped connecting clip 15 from shaking and rotating, thus improving installation stability and providing an anti-loosening function. A screw connector 11 is provided on the other end of the U-shaped connecting clip 15 relative to the fastening bolt 1. A screw sleeve 13 for winding the wire 20 is fixed at the front end of the screw connector 11. The screw sleeve 13 is a tubular structure with two fan-shaped mating parts. A screw cap 14 for pressing the wire 20 is screwed onto the screw sleeve 13. In use, the wire 20 is passed through the gap between the screw sleeves 13 and wound around the screw sleeves 13. After the wire 20 is wound, the screw cap 14 is screwed on to press the wire 20, thereby improving connection stability and preventing loosening.

[0033] The winding unit is hung on the fastening bolt 1 on the pressing unit via the U-shaped connecting buckle 15 and is locked in the U-shaped limiting buckle 17. The pressing unit presses the U-shaped limiting buckle 15 to fix the winding unit.

[0034] In use, turn the hand-tightening cap 6 counterclockwise to reduce the elastic force of the spring 7, push the pressure plate 8 upward so that the U-shaped connecting buckle 15 is hooked onto the fastening bolt 1. Adjust the position of the U-shaped connecting buckle 15 so that it is locked in the U-shaped limiting buckle 17. Release the pressure plate 8 so that the pressure plate 8 is pressed against the U-shaped connecting buckle 15 by the elastic force of the spring 7. Then turn the hand-tightening cap 6 clockwise to compress the spring 7, increase its elastic potential energy, so that the pressure plate 8 presses the U-shaped connecting buckle 15 tightly against the upper end of the top screw pipe 2, thus limiting and fixing it.

[0035] When maintenance personnel need to disassemble the wire 20, they can directly unscrew the hand cap 6, and after it is loosened, push the pressure plate 8 upward and remove the U-shaped connecting buckle 15, thereby separating the pressure unit and the winding unit, so that the wire 20 is separated from the terminal block. It is not necessary to completely disassemble the pressure unit and the winding unit, which improves the disassembly and assembly efficiency and is beneficial to maintenance work.

[0036] In this embodiment, a sealing plate 12 is provided on one end of the screw connector 11 near the U-shaped connecting buckle 15. A dustproof sleeve 9 is screwed onto the screw connector 11. One end of the dustproof sleeve 9 is pressed against the sealing plate 12, and the other end is provided with a rubber sheet 10, which improves the dustproof performance and prevents dust from falling onto the screw sleeve 13 and affecting normal use. The rubber sheet 10 is made of a soft material and can hold and limit the wire 20, which not only has a protective function but also a limiting function.

[0037] In use, unscrew the dustproof sleeve 9 and the screw cap 14 counterclockwise to remove them, allowing the wire 20 to pass through the rubber sheet 10, dustproof sleeve 9, screw sleeve 13 and screw cap 14. Then use a wire stripper to peel off the outer insulation sheath of the wire 20, allowing the exposed copper strip to pass through the gap in the screw sleeve 13 and wrap around the screw sleeve 13. Then tighten the screw cap 14 to press the copper strip, and finally screw the dustproof sleeve 9 clockwise to complete the installation.

[0038] In this embodiment, the top surface of the top screw pipe 2 is provided with a plurality of anti-slip textures 16 distributed along the circumferential direction. The U-shaped connecting buckle 15 is tightly attached to the top surface of the top screw pipe 2 by the downward pressure of the pressure plate 8. The anti-slip textures 16 effectively enhance the anti-slip properties of the top screw pipe 2, thereby significantly improving the stability of the entire device during the installation process.

[0039] In this embodiment, the outer surface of the dustproof sleeve 9 is provided with multiple anti-slip protrusions to enhance its anti-slip performance.

[0040] In this embodiment, a nut 5 is screwed to the lower end of the fastening bolt 1. The fastening bolt 1 and the nut 5 are used to complete the fixed installation of this utility model, for example, to fix it on the terminal frame in the power distribution cabinet.

[0041] Components not described in detail in this utility model are existing technologies.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire terminal block for preventing loosening, comprising a support plate (4), wherein the support plate (4) has pressing units at both ends, and each of the pressing units is connected to a winding unit, characterized in that: The pressing unit includes a fastening bolt (1), on which a top screw tube (2) and a bottom screw tube (3) are screwed. The top screw tube (2) is located at the upper end of the bottom screw tube (3). A spring (7) and a pressure plate (8) are movably sleeved on the fastening bolt (1) and located at the upper end of the top screw tube (2). A hand-tightening cap (6) is screwed to the top of the fastening bolt (1). The spring (7) is located between the hand-tightening cap (6) and the pressure plate (8). A U-shaped limiting buckle (17) is provided at the bottom of the pressure plate (8). The pressing unit is connected to the winding unit through the U-shaped limiting buckle (17). The support plate (4) is movably inserted at both ends onto the fastening bolts (1). The top screw pipe (2) and the bottom screw pipe (3) are located at the upper and lower ends of the support plate (4) respectively. When the top screw pipe (2) and the bottom screw pipe (3) rotate relative to each other, they clamp the support plate (4). The winding unit includes a U-shaped connecting buckle (15) that cooperates with the U-shaped limiting buckle (17). The U-shaped connecting buckle (15) is locked inside the U-shaped limiting buckle (17). A screw connector (11) is provided on the other end of the U-shaped connecting buckle (15) relative to the fastening bolt (1). A screw sleeve (13) for winding the wire (20) is fixed at the front end of the screw connector (11). A screw cap (14) for pressing the wire (20) is screwed onto the screw sleeve (13). The winding unit is hung on the fastening bolt (1) on the pressing unit by the U-shaped connecting buckle (15) and is locked in the U-shaped limiting buckle (17). The pressing unit presses the U-shaped limiting buckle (17) to fix the winding unit.

2. The anti-loosening wire terminal according to claim 1, characterized in that: A sealing plate (12) is provided on one end of the screw connector (11) near the U-shaped connecting buckle (15). A dustproof sleeve (9) is screwed onto the screw connector (11). One end of the dustproof sleeve (9) is pressed onto the sealing plate (12), and the other end is provided with a rubber sheet (10).

3. The anti-loosening wire terminal according to claim 1, characterized in that: The top surface of the top screw pipe (2) is provided with multiple anti-slip textures (16) distributed along the circumferential direction.

4. The anti-loosening wire terminal according to claim 2, characterized in that: The outer surface of the dustproof sleeve (9) is provided with multiple anti-slip raised strips.

5. The anti-loosening wire terminal according to claim 1, characterized in that: The diameter of the pressure plate (8) is larger than the diameter of the top screw tube (2).

6. The anti-loosening wire terminal according to claim 1, characterized in that: The two ends of the spring (7) abut against the hand-tightening cap (6) and the pressure plate (8), respectively.

7. The anti-loosening wire terminal according to claim 1, characterized in that: The threaded sleeve (13) is a tubular structure with two fan-shaped fittings.

8. The anti-loosening wire terminal according to claim 1, characterized in that: The lower end of the fastening bolt (1) is screwed with a nut (5).

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