Anti-conduction screw structure

Abstract

The utility model discloses an anti-conductive screw structure, which relates to the technical field of screws, and comprises a screw insulating cap and a screw main body, the screw insulating cap is wrapped on the screw main body by adopting a plastic packaging process, the screw insulating cap is made of insulating materials, the screw main body is made of metal materials, and the screw design of combining metal and engineering plastics is adopted. According to the metal screw provided by the utility model, the torsion and dismounting times required by the installation of the metal screw can be met, the safety protection effect of an electrified part on an installation tool and personnel can also be met, the performance and the safety are improved, and meanwhile, the screw insulating cap is installed on the screw main body in a plastic sealing manner, so that the screw insulating cap and the screw main body are connected into a whole; the interface bonding strength of metal and plastic is improved, the problems of layering, cracking and the like of the material in the using process are avoided, and the reliability and durability of the product are improved.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, specifically to a screw structure that is non-conductive. Background Technology

[0002] In the automotive assembly industry, screws are common fasteners, widely used in the assembly of various products. Depending on the usage environment and requirements, screws can be made of different materials, such as metals and plastics. Metal screws possess excellent mechanical properties and durability, but their conductivity may pose a safety hazard to live parts. Engineering plastic screws, on the other hand, have good insulation properties, but their torque and number of disassembly cycles may not meet the requirements of metal screws. To address these issues, several solutions exist in the existing technology. One is to use surface treatment techniques, such as electroplating and coating, to give plastic screws a certain metallic appearance and texture, while improving their wear resistance and corrosion resistance. Another is to use composite material technology, combining metal and plastic in a certain way to form a new material that possesses both metallic and plastic properties. However, existing technologies still have some problems in practical applications. First, while surface treatment technology can improve the appearance and performance of plastic screws, its processes are complex, costly, and may cause environmental pollution. Second, although composite material technology can produce high-performance metal-plastic composite materials, the interfacial bonding strength is insufficient, which may lead to problems such as delamination and cracking during use. In addition, existing metal-plastic combination screws, while meeting torque and disassembly requirements, often fail to ensure safety performance, such as protection against live parts. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a non-conductive screw structure to address the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a non-conductive screw structure, comprising a screw insulating cap and a screw body, wherein the screw insulating cap is wrapped on the screw body by a sealing process, the screw insulating cap is made of insulating material, and the screw body is made of metal material.

[0005] Furthermore, the head of the screw body is formed with a flower-shaped portion, and the sidewall of the flower-shaped portion is formed with a plurality of mating teeth along its own circumference, and the screw insulating cap is sealed on the flower-shaped portion.

[0006] Furthermore, a limiting ring is integrally formed on the screw body, the diameter of the limiting ring being larger than the diameter of the screw body, and an annular groove is formed on the inner wall of the screw insulating cap, with the limiting ring fitting into the annular groove.

[0007] Furthermore, an abutment ring is integrally formed on the screw body, the diameter of the abutment ring is larger than the diameter of the screw body, the limiting ring is located between the abutment ring and the flower-shaped part, and the abutment ring is partially located inside the screw insulating cap.

[0008] Furthermore, a central hole is provided at the end of the flower-shaped part away from the screw body, and a central post is formed inside the screw insulating cap, the central post being adapted to fit into the hollow hole.

[0009] Furthermore, the surface of the screw body is coated with an anti-corrosion coating.

[0010] The beneficial effects of this utility model are:

[0011] 1. The screw design, which combines metal and engineering plastics, can meet the torque and disassembly frequency required for metal screw installation, while also ensuring the safety of installation tools and personnel for live parts, thus achieving a dual improvement in performance and safety.

[0012] 2. It avoids the complex processes and high costs of traditional surface treatment technologies, and also avoids potential environmental pollution, making it more environmentally friendly and economical.

[0013] 3. The screw insulating cap is installed on the screw body by sealing with plastic, so that the screw insulating cap and the screw body are connected as one piece. The flower-shaped part enhances the mating connection strength, improves the interface bonding strength between metal and plastic, avoids problems such as delamination and cracking of materials during use, and improves the reliability and durability of the product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of an anti-conductive screw structure according to the present invention.

[0015] Figure 2 for Figure 1 Sectional view along line AA;

[0016] In the diagram, 1-screw insulating cap, 2-screw body, 3-flower-shaped part, 4-meshing teeth, 5-limiting ring, 6-hollow hole, 7-center post, 8-abutment ring. Detailed Implementation

[0017] Example 1

[0018] like Figure 1 and Figure 2As shown, an anti-conductive screw structure includes a screw insulating cap 1 and a screw body 2. The screw insulating cap 1 is wrapped around the screw body 2 using a sealing process. The screw insulating cap 1 is made of insulating material, while the screw body 2 is made of metal. The screw insulating cap is installed on the screw body using a sealing process, making the screw insulating cap 1 and the screw body 2 an integral unit. This improves the interfacial bonding strength between the metal and plastic, avoids problems such as delamination and cracking during use, and improves the reliability and durability of the product. Preferably, the screw insulating cap 1 is made of engineering plastic. The screw design combining metal and engineering plastic can meet the torque and disassembly frequency required for metal screw installation, while also providing safety protection for installation tools and personnel in live parts, achieving a dual improvement in performance and safety.

[0019] Furthermore, the surface of the screw body 2 is coated with an anti-corrosion coating, which effectively prevents corrosion during use, thereby improving the screw's service life and safety.

[0020] Example 2

[0021] Based on Example 1, such as Figure 1 and Figure 2 As shown, the head of the screw body 2 has a flower-shaped part 3, and the sidewall of the flower-shaped part 3 has several mating teeth 4 along its circumference. The screw insulating cap 1 is encapsulated on the flower-shaped part 3. A limiting ring 5 is integrally formed on the screw body 2. The diameter of the limiting ring 5 is larger than the diameter of the screw body 2. An annular groove is formed on the inner wall of the screw insulating cap 1, and the limiting ring 5 fits into the annular groove. A central hole 6 is opened at the end of the flower-shaped part 3 away from the screw body 2. A central post 7 is formed inside the screw insulating cap 1, and the central post 7 fits into the hollow hole 6. The mating area is increased by the cooperation between the flower-shaped part 3 and the screw insulating cap 1, so that when the screw insulating cap 1 is rotated, the torque can be well transmitted to the flower-shaped part 3 of the screw body 2 without affecting the normal use of the screw. Secondly, the connection strength between the screw insulating cap 1 and the screw body 2 is further strengthened by the cooperation between the limiting ring 5 and the annular groove. By optimizing the shape of the screw, the screw's torsional and tensile strength are improved, thereby improving the screw's service life and safety.

[0022] Example 3

[0023] Based on Example 1, such as Figure 1 As shown, an abutment ring 8 is integrally formed on the screw body 2. The diameter of the abutment ring 8 is larger than the diameter of the screw body 2. The limiting ring 5 is located between the abutment ring 8 and the flower-shaped part 3. The abutment ring 8 is partially located inside the screw insulating cap 1. After the screw is installed in place, the abutment ring 8 will abut against the connection part to avoid the screw insulating cap 1 contacting the screw installation position and causing unstable connection.

Claims

1. A screw structure that prevents electrical conductivity, characterized in that, The screw includes a screw insulating cap (1) and a screw body (2). The screw insulating cap (1) is wrapped around the screw body (2) using a sealing process. The screw insulating cap (1) is made of insulating material. The screw body (2) is made of metal material. The head of the screw body (2) has a flower-shaped part (3). The sidewall of the flower-shaped part (3) has several mating teeth (4) along its own circumference. The screw insulating cap (1) is sealed on the flower-shaped part (3).

2. The anti-conductive screw structure according to claim 1, characterized in that, A limiting ring (5) is integrally formed on the screw body (2). The diameter of the limiting ring (5) is larger than the diameter of the screw body (2). An annular groove is formed on the inner wall of the screw insulating cap (1). The limiting ring (5) is adapted to fit in the annular groove.

3. The anti-conductive screw structure according to claim 2, characterized in that, An abutment ring (8) is integrally formed on the screw body (2). The diameter of the abutment ring (8) is larger than the diameter of the screw body (2). The limiting ring (5) is located between the abutment ring (8) and the flower-shaped part (3). The abutment ring (8) is partially located inside the screw insulating cap (1).

4. The anti-conductive screw structure according to claim 1, characterized in that, The flower-shaped part (3) has a central hole (6) at one end away from the screw body (2), and a central post (7) is formed inside the screw insulating cap (1), and the central post (7) is adapted to fit inside the central hole (6).

5. The anti-conductive screw structure according to claim 1, characterized in that, The surface of the screw body (2) is coated with an anti-corrosion coating.

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