A screw with an insulating protective structure

Abstract

This utility model provides a screw with an insulating protective structure, belonging to the field of hardware technology. It includes a bolt shank, an insulating protective component, and a sealing component. A bolt head is connected to the top of the bolt shank. In this utility model, when installing the bolt, the bolt shank is inserted through a through hole in the insulating cap that communicates with the receiving cavity. The bolt shank passes through a transition sleeve, allowing the bolt head to be placed in the receiving cavity. The insulating sleeve is then fitted onto the surface of the bolt shank, enabling the bolt shank and bolt head to be insulated from the high-voltage electrical equipment through the insulating cap and insulating sleeve. Simultaneously, the bolt shank is still made of metal, ensuring both connection strength and insulation requirements. Compared to the traditional method of spraying insulating paint onto the bolt surface, this provides better insulation and has a simpler structure, facilitating installation and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of hardware technology, specifically to a screw with an insulating and protective structure. Background Technology

[0002] Screws, as common fasteners, are widely used in various fields such as industry, communications, and automobiles. They can be found wherever there is fastening and connection. However, screws are made of metal, which makes them conductive. This can cause them to fail in some places where insulation is required for fastening. Severe weather can cause discharge phenomena in the fastening bolts of high-voltage electrical appliances, seriously threatening the safe operation of the system. Currently, the common method is to apply a layer of insulating varnish to the surface of the bolt. However, due to severe peeling of the insulating varnish, the insulation effect is minimal. There are also plastic screws with insulating properties on the market, but these screws have low mechanical strength and cannot meet the requirements of high-strength connection parts. Therefore, designing a screw that can meet certain strength requirements and has insulating protection has broad application prospects. Utility Model Content

[0003] The purpose of this invention is to provide a screw with an insulating and protective structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a screw with an insulating protective structure, comprising a bolt shank, an insulating protective component, and a sealing component;

[0005] Wherein: the top of the bolt rod is connected to a bolt head, and the surface of the bolt rod is threaded with a fixing nut;

[0006] The insulating protective assembly includes an insulating cap and an insulating sleeve. The insulating cap is composed of an insulating head. A transition sleeve is connected to the bottom of the insulating head. A receiving cavity is opened inside the insulating head. A through hole is opened inside the transition sleeve. The through hole communicates with the receiving cavity. After the bolt rod is inserted into the through hole, the bolt head connected to the top is inserted into the receiving cavity. The insulating sleeve is fitted on the surface of the bolt rod.

[0007] The sealing assembly includes a connecting cord attached to the surface of the insulating head, one end of which is connected to a sealing cap, which covers the top of the receiving cavity.

[0008] As a preferred embodiment of this utility model: both ends of the insulating sleeve are connected to contact rings, one end of the contact ring of the insulating sleeve is in contact with the bottom of the transition sleeve, and the other end of the contact ring is in contact with the fixing nut.

[0009] As a preferred embodiment of this utility model, an insulating gasket is also provided between the contact ring and the fixing nut.

[0010] As a preferred embodiment of this utility model: the insulating sleeve is a retractable corrugated sleeve structure.

[0011] As a preferred embodiment of this utility model, the top of the bolt head is provided with an internal hexagonal groove.

[0012] As a preferred embodiment of this utility model, the surface of the bolt rod is coated with an insulating coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) When installing bolts, the bolt shank is inserted through the through hole in the insulating cap that connects to the receiving cavity. The bolt shank passes through the transition sleeve, so that the bolt head is placed in the receiving cavity. The insulating sleeve is placed on the surface of the bolt shank, so that the bolt shank and bolt head are insulated from the high-voltage electrical appliance through the insulating cap and insulating sleeve. At the same time, the bolt shank is still made of metal, so that the connection strength is guaranteed while the insulation requirements are met. Compared with the traditional method of spraying insulating paint on the bolt surface, it has a better insulation effect and a simpler structure, making it easier to install and disassemble.

[0015] (2) A connecting rope is connected to the surface of the insulating head through the provided sealing component. One end of the connecting rope is connected to a sealing cap. When the bolt head is inserted into the cavity, the sealing cap is placed on the top of the cavity, so that the insulating head is sealed by the sealing cap, preventing rainwater from corroding the bolt head when it is installed outdoors. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the present invention.

[0018] Figure 3 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the insulation protection component of this utility model.

[0020] In the diagram: 1. Bolt rod; 2. Bolt head; 3. Fixing nut; 4. Insulating protective assembly; 41. Insulating cap; 411. Insulating head; 412. Transition sleeve; 413. Receiving cavity; 414. Perforation; 42. Insulating sleeve; 5. Sealing assembly; 51. Connecting rope; 52. Sealing cover; 6. Contact ring; 7. Insulating gasket; 8. Socket hexagonal groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1-4 A screw with an insulating protective structure includes: a bolt shank 1, an insulating protective component 4, and a sealing component 5; a bolt head 2 is connected to the top of the bolt shank 1, and a fixing nut 3 is threaded onto the surface of the bolt shank 1.

[0023] Please see Figure 1 , Figure 3 , Figure 4 The insulating protective component 4 includes an insulating cap 41 and an insulating sleeve 42. The insulating cap 41 is composed of an insulating head 411. A transition sleeve 412 is connected to the bottom of the insulating head 411. A receiving cavity 413 is opened inside the insulating head 411. A through hole 414 is opened inside the transition sleeve 412. The through hole 414 communicates with the receiving cavity 413. After the bolt rod 1 is inserted into the through hole 414, the bolt head 2 connected to the top is inserted into the receiving cavity 413. The insulating sleeve 42 is fitted on the surface of the bolt rod 1.

[0024] In practical use: When installing the bolt, the bolt shank 1 is inserted through the through hole 414 in the insulating cap 41, which communicates with the receiving cavity 413. The bolt shank 1 passes through the transition sleeve 412, so that the bolt head 2 is placed in the receiving cavity 413. The insulating sleeve 42 is fitted onto the surface of the bolt shank 1, so that the bolt shank 1 and the bolt head 2 are insulated from the high-voltage electrical appliance through the insulating cap 41 and the insulating sleeve 42. At the same time, the bolt shank 1 is still made of metal, which ensures the connection strength while meeting the insulation requirements. Compared with the traditional method of spraying insulating paint on the bolt surface, it has a better insulation effect and a simpler structure, making it easier to install and disassemble.

[0025] Please see Figure 2 , Figure 4 The sealing assembly 5 includes a connecting rope 51 connected to the surface of the insulating head 411, one end of which is connected to a sealing cap 52, which covers the top of the receiving cavity 413.

[0026] In practical use: A connecting rope 51 is connected to the surface of the insulating head 411, and a sealing cap 52 is connected to one end of the connecting rope 51. After the bolt head 2 is inserted into the cavity 413, the sealing cap 52 is placed on the top of the cavity 413, so that the insulating head 411 is sealed by the sealing cap 52, preventing rainwater from being present in the cavity 413 during outdoor installation and corroding the bolt head 2.

[0027] Please see Figure 3 Both ends of the insulating sleeve 42 are connected to contact rings 6. One end of the insulating sleeve 42 is in contact with the bottom of the transition sleeve 412, and the other end of the contact ring 6 is in contact with the fixing nut 3. The insulating sleeve 42 is a retractable corrugated sleeve structure.

[0028] In practical use: both ends of the insulating sleeve 42 are connected to contact rings 6. The contact ring 6 at one end of the insulating sleeve 42 contacts the bottom of the transition sleeve 412, and the other end contacts the fixing nut 3. Since the insulating sleeve 42 is a telescopic corrugated sleeve structure, it can automatically extend and adjust according to the tightening depth of the fixing nut 3 to meet different connection depths.

[0029] Please see Figure 1 , Figure 3 An insulating gasket 7 is also provided between the contact ring 6 and the fixing nut 3.

[0030] In practical use: An insulating gasket 7 is provided between the contact ring 6 and the fixing nut 3. The insulating gasket 7 can isolate the contact end between the fixing nut 3 and the insulating sleeve 42.

[0031] Please see Figure 1 , Figure 3 The top of the bolt head 2 has an internal hexagonal groove 8.

[0032] In practical use: The top of the bolt head 2 has an internal hexagonal groove 8 for easy disassembly and installation using a wrench.

[0033] Please see Figure 3 The surface of bolt rod 1 is coated with an insulating coating.

[0034] In practical use: The surface of bolt rod 1 is sprayed with an insulating coating to further improve the insulation effect of the bolt.

[0035] When installing the bolt, the bolt shank 1 is inserted through the through hole 414 in the insulating cap 41, which communicates with the receiving cavity 413. The bolt shank 1 passes through the transition sleeve 412, so that the bolt head 2 is placed in the receiving cavity 413. The insulating sleeve 42 is fitted onto the surface of the bolt shank 1, so that the bolt shank 1 and the bolt head 2 are insulated from the high-voltage electrical appliance through the insulating cap 41 and the insulating sleeve 42. At the same time, the bolt shank 1 is still made of metal, which ensures the connection strength while meeting the insulation requirements. Compared with the traditional method of spraying insulating paint on the bolt surface, it has a better insulation effect and a simpler structure, making it easier to install and disassemble.

[0036] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A screw with an insulating protective structure, characterized in that, include: A bolt rod (1), the top end of which is connected to a bolt head (2), and a fixing nut (3) is threaded onto the surface of the bolt rod (1); An insulating protective assembly (4) includes an insulating cap (41) and an insulating sleeve (42). The insulating cap (41) is composed of an insulating head (411). A transition sleeve (412) is connected to the bottom of the insulating head (411). A receiving cavity (413) is opened inside the insulating head (411). A through hole (414) is opened inside the transition sleeve (412). The through hole (414) communicates with the receiving cavity (413). After the bolt rod (1) is inserted into the through hole (414), the bolt head (2) connected to the top is inserted into the receiving cavity (413). The insulating sleeve (42) is fitted on the surface of the bolt rod (1). A sealing assembly (5) includes a connecting rope (51) attached to the surface of an insulating head (411), one end of which is connected to a sealing cap (52) which covers the top of the receiving cavity (413).

2. The screw according to claim 1, characterized in that: Both ends of the insulating sleeve (42) are connected to contact rings (6). The contact ring (6) at one end of the insulating sleeve (42) is in contact with the bottom of the transition sleeve (412), and the contact ring (6) at the other end is in contact with the fixing nut (3).

3. The screw according to claim 2, characterized in that: An insulating gasket (7) is also provided between the contact ring (6) and the fixing nut (3).

4. The screw according to claim 1, characterized in that: The insulating sleeve (42) is a retractable corrugated sleeve structure.

5. The screw according to claim 1, characterized in that: The top of the bolt head (2) is provided with an internal hexagonal groove (8).

6. The screw according to claim 1, characterized in that: The surface of the bolt rod (1) is coated with an insulating coating.

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