Wiring terminal screw capable of winding electric wire

Abstract

The wiring terminal screw capable of winding the electric wire comprises a screw rod and a screw head, the screw head is arranged at the rear end of the screw rod, the front end of the screw rod is provided with a clamping groove, the clamping groove penetrates through the front end and the two radial sides of the screw rod, the outer side wall of the screw rod is provided with a protruding external thread, and the outer side wall of the screw rod is provided with a clamping groove. And the external thread is arranged at the rear end of the screw rod. After being inserted into the clamping groove, the wire is wound on the screw rod through rotation of the screw, so that the contact area and winding turns of the wire and the screw are greatly increased, and the stability of wire fixation is remarkably enhanced. And even under the condition of strong vibration or long-term use, the wire is not easy to loosen or fall off, so that the reliability of circuit connection is effectively guaranteed. In industrial equipment, large vibration and impact are often faced, the firm winding and fixing mode can ensure that the electric wire is always kept in a good connection state, and equipment faults caused by connection looseness are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware fasteners, and particularly relates to a terminal screw capable of winding electric wires. Background Art

[0002] A terminal screw is a key component in electrical connections.

[0003] It is usually made of metal materials and includes a screw head for rotational operation, which commonly has shapes such as cross, flat, or hexagon socket. The screw part has threads for mating with the threaded holes of the terminal. It is mainly used to fix electric wires, ensuring a tight and stable connection between the electric wires and the terminal, thereby guaranteeing the normal transmission of electric current. It can effectively prevent the electric wires from loosening or falling off due to vibration, external pulling, etc., ensuring the safety and reliability of the circuit.

[0004] The terminal screw fixes the electric wire. The stripped electric wire is inserted into the corresponding position of the terminal, and the terminal screw is rotated. The threads of the screw engage with the threaded holes of the terminal. As the screw is screwed in, the front end of the screw gradually presses the metal conductor of the electric wire.

[0005] In this way of pressing and fixing the electric wire, after the screw loosens, the problem of the electric wire becoming loose and falling off easily occurs. Summary of the Invention

[0006] In view of the problems pointed out in the background art, the utility model provides a terminal screw capable of winding electric wires to solve the above technical problems.

[0007] The technical solution of the utility model is realized as follows:

[0008] A terminal screw capable of winding electric wires includes a screw rod and a screw head. The screw head is arranged at the rear end of the screw rod. A clamping groove is provided at the front end of the screw rod, and the clamping groove runs through the front end and the radial two sides of the screw rod. An outward protruding external thread is provided on the outer side wall of the screw rod, and the external thread is arranged at the rear end of the screw rod.

[0009] The utility model is further arranged such that an inward concave positioning winding groove is provided on the outer side wall of the screw rod, and the positioning winding groove is arranged at the front end of the screw rod.

[0010] The utility model is further arranged such that the positioning winding groove is a spiral structure.

[0011] The utility model is further arranged such that the inner wall of the clamping groove is provided with anti-slip textures.

[0012] The utility model is further arranged such that the cross-section of the positioning winding groove is semi-circular.

[0013] The present utility model is further configured such that the number of turns of the spiral structure is 2 to 5 turns.

[0014] The present utility model is further configured such that the inner wall roughness of the positioning winding groove is less than or equal to Ra0.8.

[0015] The present utility model is further configured such that the helix angle of the spiral structure is 10° to 30°.

[0016] By adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0017] The terminal screw provided by the present utility model can wind the electric wire. After the electric wire is inserted into the clamping groove, it is wound around the screw rod by rotating the screw, which greatly increases the contact area and the number of winding turns between the electric wire and the screw, thereby significantly enhancing the stability of the electric wire fixation. Even under strong vibration or long-term use, the electric wire is not easily loosened or detached, effectively ensuring the reliability of the circuit connection. In industrial equipment, large vibrations and impacts are often encountered, and this firm winding and fixing method can ensure that the electric wire always maintains a good connection state, reducing equipment failures caused by loose connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0021] The following is a description of the present utility model with reference to Figure 1 as follows:

[0022] Embodiment 1: A terminal screw for winding wires, comprising a screw rod 1 and a screw head 2. The screw head 2 is arranged at the rear end of the screw rod 1. A clamping groove 3 is provided at the front end of the screw rod 1. The clamping groove 3 runs through the front end and the two radial sides of the screw rod 1. The clamping groove 3 provided at the front end provides a position for the initial placement of the wire, facilitating subsequent winding operations. Its function is to initially accommodate and position the wire. This design helps to stably place the wire in the clamping groove 3 before winding the wire, preventing the wire from shifting during the winding process. An outward protruding external thread 4 is provided on the outer sidewall of the screw rod 1. The external thread 4 is located at the rear end of the screw rod 1 and is used to cooperate with the threaded hole of the terminal to achieve a fastening connection. In actual electrical wiring work, the operator first places the wire into the clamping groove 3, then rotates the screw head 2 to wind the wire along the screw rod 1, and finally uses the external thread 4 at the rear end to fix the entire screw on the terminal. The terminal screw with this structure is relatively simple to operate and can effectively improve the stability and reliability of wire connection.

[0023] An inward concave positioning winding groove 5 is provided on the outer sidewall of the screw rod 1. The positioning winding groove 5 is arranged at the front end of the screw rod 1. The positioning winding groove 5 is of a spiral structure. The spiral positioning winding groove 5 provides a clear path and guide for the winding of the wire, enabling the wire to be wound more neatly and orderly on the screw rod 1, avoiding chaotic winding of the wire. The inward concave structure increases the contact area between the wire and the screw rod 1, thereby increasing the frictional force and making it more difficult for the wire to loosen or slip off after winding. It helps to fix the wire more firmly on the screw rod 1, especially in the case of external pulling or vibration, ensuring the stability of the wire connection. In actual wiring operation, after the operator places the wire into the clamping groove 3, the wire is wound along the spiral positioning winding groove 5, and the wire can naturally distribute along the shape of the groove, improving the winding efficiency and quality. Moreover, during long-term use, the existence of the positioning winding groove 5 can effectively reduce circuit failures caused by wire loosening.

[0024] The inner wall of the clamping groove 3 is provided with anti-slip textures. Enhance friction: When the wire is inserted into the clamping groove 3, the anti-slip textures can increase the frictional force between the inner wall of the clamping groove and the wire. This enables the wire to obtain a certain fixing effect when initially inserted into the clamping groove and is not easily slid or displaced. Improve fixing stability: During the process of rotating the screw to wind the wire around the screw rod 1, the anti-slip textures help prevent the wire from sliding relatively within the clamping groove 3, thereby ensuring that the wire can be wound and fixed as expected, further improving the stability and reliability of the entire fixing structure.

[0025] The cross-section of the positioning winding groove 5 is semi-circular. The semi-circular shape can provide a natural and smooth guide for the wire, making the wire winding process smoother and reducing the possible obstacles and jams during wire winding. Compared with cross-sections of other shapes, the semi-circular shape can increase the contact area between the wire and the positioning winding groove 5 to a certain extent, thereby enhancing the friction and fixing effect, and making the wire less likely to loosen or slip off.

[0026] The number of turns of the spiral structure is 2 to 5 turns. The range of 2 to 5 turns can provide sufficient wire winding length to ensure that the wire can be fully wound around the screw 1 to achieve stable fixation. The appropriate number of turns can generate an appropriate tightening force, which can firmly fix the wire without damaging the wire or making it difficult to disassemble due to excessive winding.

[0027] The inner wall roughness of the positioning winding groove 5 is less than or equal to Ra0.8. The roughness Ra0.8 is a relatively small value, indicating that the inner wall of the positioning winding groove 5 is relatively smooth. A smoother surface can reduce the contact resistance between the wire and the positioning winding groove, which is beneficial to the smooth transmission of current, reduce power loss and heat generation.

[0028] The helix angle of the spiral structure is 10° to 30°. The helix angle of 10° to 30° can provide a more appropriate winding speed and force during the wire winding process. A smaller helix angle (such as about 10°) can make the winding tighter and provide a greater fixing force; while a larger helix angle (close to 30°) can make the winding operation faster.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A terminal screw for winding an electric wire, comprising a screw rod (1) and a screw head (2), wherein the screw head (2) is arranged at the rear end of the screw rod (1), and characterized in that: The front end of the screw rod (1) is provided with a clamping groove (3), which passes through the front end and two radial sides of the screw rod (1). The outer wall of the screw rod (1) is provided with a protruding external thread (4), and the external thread (4) is arranged at the rear end of the screw rod (1).

2. A terminal screw capable of winding electric wires according to claim 1, characterized in that: An inwardly concave positioning winding groove (5) is provided on the outer side wall of the screw rod (1), and the positioning winding groove (5) is arranged at the front end of the screw rod (1).

3. A terminal screw capable of winding electric wires according to claim 2, characterized in that: The positioning winding groove (5) is a spiral structure.

4. A terminal screw capable of winding electric wires according to claim 1, characterized in that: The inner wall of the clamping groove (3) is provided with an anti-slip texture.

5. A terminal screw capable of winding electric wires according to claim 2, characterized in that: The cross section of the positioning winding groove (5) is semicircular.

6. A terminal screw capable of winding electric wires according to claim 3, characterized in that: The number of turns of the spiral structure is 2 to 5.

7. A terminal screw capable of winding electric wires according to claim 3, characterized in that: The inner wall roughness of the positioning winding groove (5) is less than or equal to Ra0.

8.

8. The terminal screw capable of winding electric wires according to claim 3, characterized in that: The helical pitch angle of the spiral structure is 10° to 30°.

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