Flame-retardant wire harness protective sleeve structure

Abstract

The utility model discloses a flame-retardant wire harness protective sleeve structure which comprises a corrugated sheet, the outer wall of the top and the outer wall of the bottom of the corrugated sheet are respectively provided with a connecting sheet, the corrugated sheet and the connecting sheets are in a bent state when not stressed, connecting assemblies are installed outside the two connecting sheets, and the connecting assemblies are connected with the corrugated sheet. The connecting assembly comprises a first extension strip arranged at the end of a connecting piece, a second extension strip is arranged on the outer wall, close to the outer side, of one end of the connecting piece, the outer walls of the sides, away from each other, of the first extension strip and the second extension strip are each provided with an inserting-connecting groove, and the two inserting-connecting grooves are slidably connected with the same connecting pin in an inserted mode. According to the utility model, through the arrangement of the connecting assembly, under the condition that the whole wire harness does not need to be disassembled, the scheme can realize the rapid disassembly and replacement of the external protection sleeve of the wire harness, thereby not only improving the maintenance efficiency, but also avoiding the complex operation and potential risk possibly brought by the overall disassembly of the wire harness.

Description

Technical Field

[0001] This utility model relates to the field of wire harness protection sleeve technology, specifically a flame-retardant wire harness protection sleeve structure. Background Technology

[0002] In modern industry and transportation, wiring harnesses face complex and harsh working environments. For example, in the engine compartment of a car, wiring harnesses must withstand the combined effects of high temperatures (up to 120°C or even higher), oil contamination, vibration, and other factors. Therefore, protective sleeves are often installed on the outside of the wiring harness.

[0003] A search revealed a Chinese patent publication number CN222484182U, which discloses a flame-retardant protective sleeve for automotive wiring harnesses. The sleeve includes a tube with interfaces fixedly connected to both ends, a support sleeve disposed inside the tube, and a positioning groove with a slidably connected positioning block inside the groove. This utility model provides a flame-retardant protective sleeve for automotive wiring harnesses.

[0004] Existing protective sleeves, as described above, are generally one-piece structures. Once the wiring harness is connected, if you want to replace the protective sleeve, you need to disassemble the wiring harness to complete the operation, which is inconvenient and has room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a flame-retardant wire harness protective sleeve structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flame-retardant wire harness protective sleeve structure, including a corrugated sheet, with a connecting piece provided on the top outer wall and the bottom outer wall of the corrugated sheet. The corrugated sheet and the connecting piece are in a bent state when not under force. A connecting component is installed on the outside of both connecting pieces. The connecting component includes an extension strip one provided at the end of the connecting piece, and an extension strip two provided on the outer wall of the connecting piece one end near the outer side. An insertion groove is provided on the outer wall of the side of the extension strip one and the extension strip two that are far apart from each other. The same connecting pin is slidably inserted into the two insertion grooves.

[0007] This solution allows for the rapid disassembly and replacement of the outer protective sleeve of the wire harness without disassembling the entire harness. This improves maintenance efficiency and avoids the complex operations and potential risks associated with disassembling the entire harness. Simply bend the corrugated sheet to unfold it into a flat state, making the protective sleeve ready for direct installation in the appropriate position. After installing the protective sleeve, wrap the corrugated sheet around the outside of the wire harness. This completely encloses and protects the wire harness. Compared to traditional methods, there is no need to pass the wires through the through-holes in the protective sleeve, simplifying the process. Next, install the connecting piece and its related components. Bring the extension strip one at the end of the connecting piece and the extension strip two on the side wall of the connecting piece close together, then insert the connecting pin into the two insertion slots. This operation effectively prevents the positions of extension strip one and extension strip two from changing, thus ensuring the overall protective effect.

[0008] As a further preferred embodiment of this technical solution, a limit bolt is slidably inserted into the end of the connecting pin, and a threaded groove is formed on the outside of the end of the limit bolt, with a nut threaded onto the outside of the threaded groove.

[0009] As a further preferred embodiment of this technical solution, brominated flame retardants are added inside the corrugated sheet and the connecting sheet.

[0010] As a further preferred embodiment of this technical solution, polyimide is added inside the corrugated sheet and the connecting sheet.

[0011] As a further preferred embodiment of this technical solution, both the corrugated sheet and the connecting sheet are coated with a nano-aluminum hydroxide coating.

[0012] As a further preferred embodiment of this technical solution, each of the two connecting pieces is provided with two horizontally arranged extension plates at the ends that are far apart from each other, and each of the four extension plates has a through hole inside.

[0013] As a further preferred embodiment of this technical solution, each edge of the connecting pin end portion is machined with rounded corners.

[0014] This utility model provides a flame-retardant wire harness protective sleeve structure, which has the following beneficial effects:

[0015] This invention, by setting up a connecting component, enables the rapid disassembly and replacement of the outer protective sleeve of the wire harness without disassembling the entire harness. This improves maintenance efficiency and avoids the complex operations and potential risks associated with disassembling the entire harness. By bending the corrugated sheet and unfolding it into a flat state, the protective sleeve is ready for direct installation in the appropriate position. After installing the protective sleeve, the corrugated sheet is wrapped around the outside of the wire harness, completely protecting it. Compared to traditional methods, there is no need to pass the wires through the through-holes in the protective sleeve, simplifying the operation. Next, the connecting piece and its related components are installed. The extension strip one at the end of the connecting piece and the extension strip two on the side wall of the connecting piece are brought close together, and then the connecting pin is inserted into the two insertion slots. This operation effectively prevents the positions of extension strip one and extension strip two from changing, thus ensuring the overall protective effect. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the corrugated sheet and connecting sheet structure of this utility model;

[0018] Figure 3 This is an enlarged structural diagram of the connecting component of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0020] In the diagram: 1. Corrugated sheet; 2. Connecting piece; 3. Connecting assembly; 4. Extension plate; 301. Extension strip one; 302. Extension strip two; 303. Insertion groove; 304. Connecting pin; 305. Limiting bolt; 306. Nut; 307. Rounded corner. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 3As shown in this embodiment, a flame-retardant wire harness protective sleeve structure includes a corrugated sheet 1. A connecting piece 2 is provided on the top outer wall and the bottom outer wall of the corrugated sheet 1. The corrugated sheet 1 and the connecting piece 2 are in a bent state when not under force. A connecting component 3 is installed on the outside of the two connecting pieces 2. The connecting component 3 includes an extension strip 301 provided at the end of the connecting piece 2. An extension strip 302 is provided on the outer wall of one end of the connecting piece 2 near the outer side. An insertion groove 303 is provided on the outer wall of the side of the extension strip 301 and the extension strip 302 that are far away from each other. The same connecting pin 304 is slidably inserted into the two insertion grooves 303.

[0023] First, bend the corrugated sheet 1 to unfold it into a flat state. At this point, the protective sleeve is ready for direct installation and can be easily installed in the corresponding position. After installing the protective sleeve, wrap the corrugated sheet 1 around the outside of the wire harness. In this way, the wire harness will be completely wrapped and protected by the corrugated sheet. Compared with the traditional method, there is no need to pass the wire through the through hole of the protective sleeve for installation, which simplifies the operation process. Next, install the connecting piece 2 and its related components. Bring the extension strip 301 at the end of the connecting piece 2 and the extension strip 302 on the side wall of the connecting piece 2 close to each other, and then insert the connecting pin 304 into the two insertion slots 303. This operation can effectively prevent the position of the extension strip 301 and the extension strip 302 from changing, thereby helping to ensure the overall protection effect.

[0024] like Figure 3 and Figure 4 As shown, a limiting bolt 305 is slidably inserted into the end of the connecting pin 304. The limiting bolt 305 has a threaded groove on its outer surface, and a nut 306 is threaded onto the outer surface of the groove. After passing through the insertion groove 303, the end of the connecting pin 304 extends outwards. By passing the limiting bolt 305 through this extended portion and then screwing the nut 306 into the threaded portion of the limiting bolt 305, the position of the connecting pin 304 can be prevented from changing, thus maintaining the connection.

[0025] like Figure 1 and Figure 2 As shown, brominated flame retardants are added inside the corrugated sheet 1 and the connecting sheet 2. When burning, they can release bromine free radicals. The bromine free radicals can combine with active free radicals such as hydroxyl free radicals in the combustion reaction, interrupt the combustion chain reaction, and achieve the purpose of flame retardancy.

[0026] Polyimide is added inside the corrugated sheet 1 and the connecting sheet 2. Blending polyimide with other wire harness protective sleeve matrix materials can significantly improve the heat resistance of the materials. The polyimide molecular chain contains a large number of aromatic rings and imide groups. These structures have high thermal stability and can maintain the integrity of the molecular chain at high temperatures.

[0027] Both the corrugated sheet 1 and the connecting sheet 2 are coated with a nano aluminum hydroxide coating. When heated, the coating decomposes and absorbs a large amount of heat, reducing the surface temperature of the coating. At the same time, the water vapor produced by the decomposition can dilute the concentration of combustible gas, and the aluminum oxide residue after decomposition can form a heat insulation layer to prevent the transfer of heat and oxygen.

[0028] like Figure 1 As shown, each of the two connecting pieces 2 has two horizontally arranged extension plates 4 at its far ends, and each of the four extension plates 4 has a through hole. By passing the connector through the through hole of the connecting piece 2, the protective sleeve can be connected to the external device.

[0029] like Figure 4 As shown, each edge of the end portion of the connecting pin 304 is machined with a rounded corner 307, which makes the process of connecting the connecting pin 304 connecting the extension strip 1 301 and the extension strip 2 302 more fault-tolerant.

[0030] This utility model provides a flame-retardant wire harness protective sleeve structure, the specific working principle of which is as follows:

[0031] When installing the protective sleeve, firstly, bend the corrugated sheet 1 to unfold it into a flat state. At this point, the protective sleeve is ready for direct installation and can be easily installed in the corresponding position. After installing the protective sleeve, wrap the corrugated sheet 1 around the outside of the wire harness. In this way, the wire harness will be completely wrapped and protected by the corrugated sheet. Compared with the traditional method, there is no need to pass the wire through the through hole of the protective sleeve for installation, simplifying the operation process. Next, install the connecting piece 2 and its related components. Bring the extension strip 301 at the end of the connecting piece 2 and the extension strip 302 on the side wall of the connecting piece 2 close to each other, and then insert the connecting pin 304 into the two insertion slots 303. This operation can effectively prevent the position of the extension strip 301 and the extension strip 302 from changing, thus helping to ensure the overall protective effect. After the connecting pin 304 passes through the insertion slot 303, the end will extend outward. Pass the limit pin 305 through the extension part, and then screw the nut 306 into the threaded part of the limit pin 305 to prevent the position of the connecting pin 304 from changing and losing the connection effect.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant wire harness protective sleeve structure, comprising a corrugated sheet (1), characterized in that: A connecting piece (2) is provided on the top outer wall and the bottom outer wall of the corrugated sheet (1). The corrugated sheet (1) and the connecting piece (2) are in a bent state when not under force. A connecting component (3) is installed on the outside of the two connecting pieces (2). The connecting component (3) includes an extension strip (301) provided at the end of the connecting piece (2). An extension strip (302) is provided on the outer wall of the connecting piece (2) near the outside. An insertion groove (303) is provided on the outer wall of the side of the extension strip (301) and the extension strip (302) that are far apart from each other. The two insertion grooves (303) are slidably inserted into the same connecting pin (304).

2. The flame-retardant wire harness protective sleeve structure according to claim 1, characterized in that: The end of the connecting pin (304) is slidably inserted into a limiting bolt (305), and the end of the limiting bolt (305) has a threaded groove, and a nut (306) is threadedly fitted on the outside of the threaded groove.

3. The flame-retardant wire harness protective sleeve structure according to claim 1, characterized in that: The corrugated sheet (1) and the connecting sheet (2) contain brominated flame retardants.

4. The flame-retardant wire harness protective sleeve structure according to claim 1, characterized in that: Polyimide is added inside the corrugated sheet (1) and the connecting sheet (2).

5. The flame-retardant wire harness protective sleeve structure according to claim 1, characterized in that: Both the corrugated sheet (1) and the connecting sheet (2) are coated with a nano-aluminum hydroxide coating.

6. The flame-retardant wire harness protective sleeve structure according to claim 1, characterized in that: Two horizontally arranged extension plates (4) are provided at the ends of the two connecting pieces (2) that are far apart from each other, and each of the four extension plates (4) has a through hole.

7. The flame-retardant wire harness protective sleeve structure according to claim 1, characterized in that: The ends of the connecting pin (304) are all machined with rounded corners (307).

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