Binding post screw

Abstract

The utility model provides a binding post screw, which comprises a screw body, the front end of the screw body is connected with a wire pressing disc, the wire pressing disc is rotatably connected with the screw body, the front end of the screw body is provided with a connecting hole, the wire pressing disc is provided with a connecting shaft connected with the connecting hole, and the connecting shaft is provided with a connecting shaft. An annular anti-disengaging protrusion is arranged on the outer side wall of the connecting shaft, and an anti-disengaging groove connected with the anti-disengaging protrusion is formed in the inner side wall of the connecting hole. The front end of the screw body is connected with the wire pressing disc, so that the problem that when a cylindrical metal core wire is pressed and fixed, the front end of the screw and a wire core slip, and consequently fixation is not firm is effectively solved. The wire pressing disc can increase the contact area with the electric wire, more stable pressure distribution is provided, and therefore the fixing effect on the electric wire is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware fasteners, in particular to a wiring terminal screw. Background Art

[0002] In the wall switch, the terminal screws work with the copper ring to secure the wires.

[0003] The securing process involves stripping the wire to an appropriate length and placing it in a specific position within the copper ring. The screw is then screwed into the ring, with the outer threads of the screw firmly engaging the inner threads. As the screw rotates, it gradually penetrates deeper into the copper ring. During this process, the tip of the screw gradually approaches the wire, applying pressure. As the screw continues to advance, its tip directly applies pressure to the wire. This pressure is evenly distributed across the contact surface of the wire through the copper ring, increasing friction and preventing the wire from slipping. Much like pressing down firmly on an object with your hand to prevent it from moving, the screw applies constant and even pressure to the wire, securing it securely. The pressure from the screw may cause slight deformation of the copper ring.

[0004] However, when tightening and fixing a cylindrical metal core wire, the front end of the screw tends to slip against the wire core as the screw rotates, causing the wire to move to the radial side of the screw. The slippage between the front end of the screw and the wire core means insufficient friction between the two. This may be because the surface of the front end of the screw is too smooth to effectively grip the wire core. After the wire moves to the radial side of the screw, the clamping fixation formed by the cooperation with the side wall of the copper part is not the best way to bear the force. This clamping mainly relies on the friction and extrusion force between the side wall of the copper part and the wire, rather than direct axial compression. For example, gently clamping a cylinder from the side with your hands is far less stable than pressing directly from the top. Because the wire is on the radial side of the screw, it is subjected to uneven force. Some areas may be under greater pressure, while other areas are under less pressure, which can easily cause the wire to loosen during long-term use. Summary of the Invention

[0005] In view of the problems pointed out in the background technology, the utility model proposes a wiring terminal screw to solve the above technical problems.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A wiring terminal screw comprises a screw body, wherein the front end of the screw body is connected with a wire pressing disc.

[0008] The utility model is further configured such that the wire pressing disc is rotatably connected to the screw body.

[0009] The utility model is further configured such that a connecting hole is provided at the front end of the screw body, a connecting shaft connected to the connecting hole is provided on the wire pressing disc, an annular anti-slip protrusion is provided on the outer side wall of the connecting shaft, and an anti-slip groove connected to the anti-slip protrusion is provided on the inner side wall of the connecting hole.

[0010] The present invention is further configured such that the wire pressing disc is circular, and the diameter of the wire pressing disc is equal to the diameter of the screw rod of the screw body.

[0011] The present invention is further configured such that a wire pressing groove is provided on the end surface of the wire pressing disc, and the wire pressing groove is provided through both radial sides of the wire pressing disc.

[0012] The present invention is further configured such that a plurality of the wire pressing grooves are provided, and the plurality of wire pressing grooves are spaced apart from each other and arranged in parallel.

[0013] The utility model is further configured such that the inner wall of the wire pressing groove is provided with anti-slip lines.

[0014] The present invention is further configured such that the spacings between adjacent wire pressing grooves are equal.

[0015] The utility model is further configured such that the bottom of the wire pressing groove is arc-shaped.

[0016] The utility model is further configured such that the edge of the wire pressing disc is chamfered.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are:

[0018] The terminal screw provided by this utility model has a wire pressing disc connected to the front end of the screw body, effectively solving the problem of slipping between the front end of the screw and the wire core when tightening and securing cylindrical metal-core wires, resulting in unstable fixation. The wire pressing disc can increase the contact area with the wire, providing more stable pressure distribution, thereby significantly improving the fixing effect of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is an exploded schematic diagram of the present utility model.

[0022] Figure 3 It is a cross-sectional view of the present utility model.

[0023] Figure 4 This is a structural diagram of the wire pressing disc of the utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference as follows Figure 1-4 The utility model is described as follows:

[0026] Example 1: A terminal screw comprises a screw body 1, which is the main part of the entire screw and has the main function of threaded connection and fixation with the copper part. The front end of the screw body 1 is connected to a wire pressing disc 2, which is rotatably connected to the screw body 1. When the screw body 1 is tightened with the copper part and enters the copper part, the screw body 1 can press the wire inserted into the copper part through the wire pressing disc 2. As the screw body 1 is tightened, the wire pressing disc 2 contacts the wire and forms pressure. At this time, the screw body 1 rotates and the wire pressing disc 2 does not rotate. As the screw body 1 is tightened, the wire is gradually compressed and fixed. The wire pressing disc 2 is connected to the front end of the screw body 1, directly contacts the wire and applies a pressing force. The rotating connection structure allows the wire pressing disc 2 and the screw body 1 to rotate relative to each other. When the screw body 1 is rotated and tightened, the wire pressing disc 2 maintains stable contact with the wire and does not rotate with it. This design avoids damage or displacement of the wire caused by the rotation of the wire pressing disc 2. In practice, when tightening the screw, the screw body 1 penetrates deeply into the copper component, while the wire clamp 2 firmly presses the wire. Because the wire clamp 2 does not rotate, the wire is not damaged by friction and is gradually tightened more firmly. This structure effectively solves the problems that can arise when traditional screws are used to tighten wires, such as wire slippage and damage.

[0027] The front end of the screw body 1 is provided with a connecting hole 3, which provides an interface for connection with the wire drum 2. Its size and shape need to match the connecting shaft 4 to ensure that the two can be accurately connected. The wire drum 2 is provided with a connecting shaft 4 connected to the connecting hole 3. The connecting shaft 4 is the part of the wire drum 2 used to connect to the screw body 1. Its length and diameter must adapt to the connecting hole 3 to ensure the stability of the installation and the flexibility of rotation. The outer wall of the connecting shaft 4 is provided with an annular anti-slip protrusion 5, and the inner wall of the connecting hole 3 is provided with an anti-slip groove 6 connected to the anti-slip protrusion 5. The anti-slip protrusion 5 is provided on the outer wall of the connecting shaft 4 to prevent the connecting shaft 4 from accidentally falling out of the connecting hole 3. In actual use, if the anti-slip protrusion 5 and the anti-slip groove 6 are not matched, when the screw is subjected to a large external force or vibration, the connecting shaft 4 may fall out of the connecting hole 3, causing the wire drum 2 to fail. With this structure, even under harsh working conditions, the wire pressing disc 2 and the screw body 1 can always be reliably connected, thereby effectively pressing the wires and ensuring the stability and safety of the circuit connection.

[0028] The crimping disc 2 is circular, with a diameter equal to the diameter of the screw shaft of the screw body 1, and its edges are chamfered. During installation, the crimping disc's diameter is equal to the screw shaft's, allowing it to fit smoothly into the installation space. The chamfered edges ensure safer and smoother operation. Furthermore, the circular shape and uniform pressure distribution ensures that the wires are securely and stably compressed, maintaining a good connection even in complex circuit environments.

[0029] The end surface of the wire drum 2 is provided with a wire pressing groove 7. The wire pressing groove 7 is arranged on both radial sides of the wire drum 2, allowing the wire to be fully embedded in the groove, providing a more comprehensive fixation and compression effect, helping to limit the movement of the wire in all directions and enhancing the stability of the fixation. There are multiple wire pressing grooves 7, which can fix multiple wires simultaneously, improving the efficiency and flexibility of the terminal screws, dispersing the pressure, and ensuring that each wire receives a uniform compression force. The multiple wire pressing grooves 7 are spaced apart and arranged in parallel, ensuring that each wire has an independent fixing space, avoiding mutual interference and affecting the fixing effect between the wires. The neat arrangement facilitates production and installation operations. The equal spacing between adjacent wire pressing grooves 7 ensures that the pressure distribution within each wire pressing groove is relatively uniform, avoiding the situation where the pressure in certain areas is too high or too low, reflecting the regularity and consistency of the design and improving the quality and reliability of the product. The bottom of the wire pressing groove 7 is curved, which better fits the shape of the wire, increases the contact area, improves the compression effect, reduces the local pressure on the wire, and reduces the risk of damage to the wire. The inner wall of the wire pressing groove 7 is provided with anti-slip grooves, which increases the friction between the wire and the wire, further preventing the wire from sliding in the wire pressing groove, and ensuring that the wire remains in a fixed position even when subjected to vibration or external force.

[0030] In actual wiring scenarios, if multiple wires of varying thicknesses need to be secured simultaneously, this type of crimping tray, with multiple evenly spaced crimping grooves with a curved bottom and anti-slip grooves, ensures that each wire is securely fastened, preventing loosening or displacement due to vibration or external forces. Furthermore, the curved bottom and anti-slip grooves protect the wire insulation from excessive compression and wear, improving the safety and durability of the wire connection.

[0031] When only one wire is compressed, and the wire is arranged perpendicular to the wire pressing groove 7. Multiple parallel and equally spaced wire pressing grooves 7 act perpendicularly on the wire, and can apply pressure evenly, so that the wire is bent and compressed to the same degree at different positions. This vertical setting ensures that the bending shape of the wire in the wire pressing groove is regular, avoiding uneven compression caused by irregular deformation. The contact area between the wire and the wire pressing disc is increased, thereby enhancing the friction, making it more difficult for the wire to move in the wire pressing groove. The wavy curvature allows the wire to disperse the force when it is pulled by external force, reducing loosening or breakage caused by excessive local force. Since the wire is pressed into a wavy shape by the joint action of multiple wire pressing grooves 7, its axial movement is greatly restricted, thereby improving the stability of the fixation. This vertically arranged wire pressing groove 7 bends the wire into a wavy shape and provides a reliable, stable and long-lasting fixing effect for a single wire.

[0032] Alternatively, only one crimping trough 7 can be provided to compress a single wire, which is then inserted into the trough. This single crimping trough 7 design offers a relatively simple structure, reducing manufacturing complexity and cost. Focusing on compressing a single wire, it allows for more precise control of the clamping force and position. The shape and size of the trough 7 match the wire, providing excellent wrapping and compression, ensuring the wire's precise position within the trough and preventing it from shifting or loosening.

[0033] In the accompanying drawings, the thread structure on the screw rod of the screw body 1 is not drawn.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A terminal screw, comprising a screw body (1), characterized in that: The front end of the screw body (1) is connected to a wire pressing disc (2); the wire pressing disc (2) is rotatably connected to the screw body (1); the front end of the screw body (1) is provided with a connecting hole (3), the wire pressing disc (2) is provided with a connecting shaft (4) connected to the connecting hole (3), the outer side wall of the connecting shaft (4) is provided with an annular anti-slip protrusion (5), and the inner side wall of the connecting hole (3) is provided with an anti-slip groove (6) connected to the anti-slip protrusion (5).

2. The terminal screw according to claim 1, characterized in that: The wire pressing disc (2) is circular, and the diameter of the wire pressing disc (2) is equal to the diameter of the screw rod of the screw body (1).

3. The terminal screw according to claim 1, wherein: A wire pressing groove (7) is provided on the end surface of the wire pressing disc (2), and the wire pressing groove (7) is provided through both radial sides of the wire pressing disc (2).

4. The terminal screw according to claim 3, characterized in that: The wire pressing grooves (7) are provided in plurality, and the plurality of wire pressing grooves (7) are spaced apart from each other and arranged in parallel.

5. The terminal screw according to claim 4, characterized in that: The inner wall of the wire pressing groove (7) is provided with anti-slip lines.

6. The terminal screw according to claim 4, characterized in that: The spacing between adjacent wire pressing grooves (7) is equal.

7. The terminal screw according to claim 3, characterized in that: The bottom of the wire pressing groove (7) is arc-shaped.

8. The terminal screw according to claim 2, characterized in that: The edge of the wire pressing disc (2) is chamfered.

Images