A structure for a through-hole sleeve for automotive wiring harnesses

By designing a combined structure of the sheath body, threaded tube, clamp, and rubber hose, the problem of reduced sealing caused by vibration loosening of the automotive wiring harness through-hole sheath was solved, thus improving stability and sealing performance.

CN224438462UActive Publication Date: 2026-06-30CHONGQING CHANGQIN AUTOMOBILE PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING CHANGQIN AUTOMOBILE PARTS CO LTD
Filing Date
2025-08-07
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing automotive wiring harness through-hole sleeves are prone to loosening due to vibration during long-term driving, resulting in decreased sealing performance and poor fixing effect, which cannot meet the needs of long-term use.

Method used

A structure comprising a sheath body, a threaded tube, a clamp, a handle, a sealing gasket, and a rubber hose was designed. The structure is secured by threaded connections and cable ties, and combined with a multi-layer rubber membrane to improve sealing and stability.

Benefits of technology

It improves the sealing and stability of automotive wiring harness through-hole sleeves, reduces the risk of loosening and leakage, and ensures a sealing effect for long-term use.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a through-hole sheath structure for automotive wiring harnesses, comprising a sheath body and a threaded tube. A rubber membrane is installed inside the sheath body. The threaded tube is installed on the left side of the sheath body, and a clamping block is threadedly connected to the outer periphery of the threaded tube. A handle is installed on the outer side of the clamping block, and the handle is welded to the clamping block. A second sealing gasket is installed on the inner side of the sheath body, and the second sealing gasket is bonded to the sheath body. A first sealing gasket is installed on the inner side of the clamping block, and the first sealing gasket is bonded to the clamping block. Compared with existing sheath structures, this automotive wiring harness through-hole sheath structure allows the sheath body to be inserted into the hole through which the B216 model wiring harness will pass. The clamping block is screwed onto the threaded tube using the handle and tightened. Then, a tool is used to cut off the excess threaded tube, reducing space occupation. The first sealing gasket on the clamping block and the second sealing gasket on the sheath body adhere to both sides of the hole, facilitating installation while improving the sealing performance of the device.
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Description

Technical Field

[0001] This utility model relates to the field of wiring harness through-hole sheath technology, specifically a structure for automotive wiring harness through-hole sheath. Background Technology

[0002] Automotive wiring harnesses are the main network of automotive circuits. Without wiring harnesses, there would be no automotive circuits. A wiring harness is an assembly that connects circuits by crimping copper contact terminals with wires and cables, then molding an insulator or adding a metal shell, and bundling the wires together. To achieve good constraint on the wiring harness and prevent it from being cut by the hole edges, a wiring harness sheath is usually used to protect the part of the wiring harness that passes through the sheet metal hole. Therefore, an automotive wiring harness through-hole sheath structure is needed.

[0003] The existing patent, CN211943195U, entitled "A Rubber Sheath for Automotive Wiring Harness Through-holes," relates to a rubber sheath for automotive wiring harness through-holes. Through an interference fit design between the wiring harness through-hole and the raised sheath dimensions and the wiring harness, the sealing between the wiring harness and the sheath is ensured. An interference fit design between the sheet metal engagement groove and the sheet metal thickness ensures a seal between the sheath and the sheet metal part, thereby increasing the reliability of the sheath's seal, reducing the difficulty of subsequent sealing processes, eliminating part defects caused by the aging of sealing materials, ensuring the sealing performance of the through-hole rubber sheath, and optimizing the manufacturing process. It features a simple and easy-to-operate structure, eliminates gaps between wires with large differences in wire diameter, and maintains its sealing performance over long-term use, making it highly valuable for promotion and practical application.

[0004] The interference fit design between the sheet metal fitting groove and the sheet metal thickness of the above-mentioned device ensures the sealing performance between the sheath and the sheet metal parts, thereby increasing the sealing reliability of the sheath and reducing the difficulty of the subsequent sealing process. However, as the driving time of the car increases, the continuous vibration during the driving process can easily cause the sheath to loosen and fall off, resulting in poor fixing effect and failing to meet people's usage needs. In view of the above situation, technical innovation is carried out on the basis of the existing sheath structure. Utility Model Content

[0005] The purpose of this utility model is to provide an automotive wiring harness through-hole sheath 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 through-hole sheath structure for automotive wiring harnesses, comprising a sheath body and a threaded tube. A rubber membrane is installed inside the sheath body, and the threaded tube is installed on the left side of the sheath body. A clamping block is threadedly connected to the outer periphery of the threaded tube, and a swivel is installed on the outer side of the clamping block. The swivel is welded to the clamping block. The clamping block is screwed onto the threaded tube and tightened by the swivel. Then, a tool is used to cut off the excess threaded tube to reduce the space occupied.

[0007] Furthermore, a second sealing gasket is installed on the inner side of the sheath body, and the second sealing gasket is bonded to the sheath body.

[0008] Furthermore, a sealing gasket is installed on the inner side of the clamping block, and the sealing gasket is bonded to the clamping block. The sealing gasket on the clamping block and the sealing gasket on the sheath body are attached to both sides of the mine shaft, which facilitates installation and improves the sealing performance of the device.

[0009] Furthermore, a rubber hose is installed inside the rubber membrane, and the rubber hose is embedded in the rubber membrane. The rubber membrane has multiple layers to prevent damage and leakage while ensuring the freedom of the rubber hose in different directions, which facilitates wiring.

[0010] Furthermore, a soft pad is installed inside the rubber hose, and the soft pad is slidably connected to the rubber hose. The soft pad fits snugly against the wire harness, and the soft pad is soft enough to fill gaps and improve the sealing effect.

[0011] Furthermore, a sealing component is installed on the periphery of the rubber hose, and the sealing component is embedded in the rubber hose.

[0012] Furthermore, the sealing assembly includes a cable tie and a fixing block, and the fixing block is slidably connected to the periphery of the cable tie. The cable tie is used to tighten and bind the rubber hose, reducing gaps in the rubber hose.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Insert the sheath body into the hole through which the wire harness of model B216 needs to pass, screw the clamp onto the threaded tube and tighten it with the handle, and then use a knife to cut off the excess threaded tube to reduce the space occupied. The sealing gasket one on the clamp and the sealing gasket two on the sheath body are attached to both sides of the mine tunnel, which facilitates installation and improves the sealing performance of the device. The wire harness passes through the rubber hose, and the soft pad is moved and fitted into the rubber hose corresponding to the position of the cable tie. The rubber hose is tightened by the cable tie. The soft pad is attached to the wire harness. The soft pad is soft enough to fill the gaps and improve the sealing effect. The rubber hose extends to the other side of the hole through the rubber membrane. The rubber membrane is multi-layered to prevent damage and leakage while ensuring the freedom of the rubber hose in different directions, which is convenient for wiring.

[0014] 2. In this utility model, the sheath body is inserted into the hole through which the wire harness of model B216 needs to pass. The clamp is screwed onto the threaded tube and tightened by the handle. Then, the excess threaded tube is cut off with a knife to reduce the space occupied. The sealing gasket one on the clamp and the sealing gasket two on the sheath body are attached to both sides of the mine tunnel, which facilitates installation and improves the sealing performance of the device.

[0015] 3. In this utility model, the wire harness passes through the rubber hose, and the soft pad is moved and fitted into the rubber hose corresponding to the cable tie. The rubber hose is then tightened by the cable tie. The soft pad fits the wire harness and is soft enough to fill gaps and improve the sealing effect. The rubber hose extends to the other side of the hole through the rubber membrane. The rubber membrane has multiple layers to prevent damage and leakage while ensuring the freedom of the rubber hose in different directions, which facilitates wiring. Attached Figure Description

[0016] Figure 1 This is a front perspective view of the through-hole sheath structure of an automotive wiring harness according to the present invention.

[0017] Figure 2 This is a side perspective view of a through-hole sheath structure for automotive wiring harnesses according to this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of a sealing component for an automotive wiring harness through-hole sheath structure according to the present invention.

[0019] In the diagram: 1. Sheath body; 2. Threaded tube; 3. Clamping block; 4. Handle; 5. Sealing gasket one; 6. Sealing gasket two; 7. Rubber membrane; 8. Rubber hose; 9. Soft pad; 10. Sealing assembly; 1001. Cable tie; 1002. Fixing block. Detailed Implementation

[0020] like Figure 1 and Figure 2 As shown, a through-hole sheath structure for automotive wiring harnesses includes a sheath body 1 and a threaded tube 2. A rubber membrane 7 is installed inside the sheath body 1. The threaded tube 2 is installed on the left side of the sheath body 1, and a clamping block 3 is threadedly connected to the outer periphery of the threaded tube 2. A handle 4 is installed on the outer side of the clamping block 3, and the handle 4 is welded to the clamping block 3. A second sealing gasket 6 is installed on the inner side of the sheath body 1, and the second sealing gasket 6 is bonded to the sheath body 1. A first sealing gasket 5 is installed on the inner side of the clamping block 3, and the first sealing gasket 5 is bonded to the clamping block 3. The sheath body 1 is inserted into the hole through which the B216 type wiring harness is to pass. The clamping block 3 is screwed onto the threaded tube 2 using the handle 4 and tightened. Then, the excess threaded tube 2 is cut off with a tool to reduce the space occupied. The first sealing gasket 5 on the clamping block 3 and the second sealing gasket 6 on the sheath body 1 are attached to both sides of the hole, which facilitates installation and improves the sealing performance of the device.

[0021] like Figure 1 and Figure 3As shown, a rubber hose 8 is installed inside the rubber membrane 7, and the rubber hose 8 is embedded in the rubber membrane 7. A soft pad 9 is installed inside the rubber hose 8, and the soft pad 9 is slidably connected to the rubber hose 8. A sealing component 10 is installed on the outside of the rubber hose 8, and the sealing component 10 is embedded in the rubber hose 8. The sealing component 10 includes a cable tie 1001 and a fixing block 1002, and the fixing block 1002 is slidably connected to the outside of the cable tie 1001. The wire harness passes through the rubber hose 8, and the soft pad 9 is moved and fitted into the corresponding position inside the rubber hose 8 of the cable tie 1001. The rubber hose 8 is tightened by the cable tie 1001. The soft pad 9 fits against the wire harness. The soft pad 9 is soft enough to fill gaps and improve the sealing effect. The rubber hose 8 extends to the other side of the hole through the rubber membrane 7. The rubber membrane 7 is multi-layered to prevent damage and leakage while ensuring the freedom of the rubber hose 8 in different directions, which is convenient for wiring.

[0022] Working principle: When using this type of automotive wiring harness through-hole sheath structure, firstly, insert the sheath body 1 into the hole through which the B216 wiring harness will pass. Then, screw the clamp 3 onto the threaded tube 2 using the handle 4 and tighten it. Next, use a tool to cut off the excess threaded tube 2 to reduce space occupation. The sealing gasket 5 on the clamp 3 and the sealing gasket 6 on the sheath body 1 fit together on both sides of the hole, which facilitates installation and improves the sealing performance of the device. The wiring harness passes through the rubber hose 8. Move the soft pad 9 to the corresponding position inside the rubber hose 8 of the cable tie 1001. Tighten the rubber hose 8 with the cable tie 1001. The soft pad 9 fits against the wiring harness. The soft pad 9 is soft enough to fill gaps and improve the sealing effect. The rubber hose 8 extends to the other side of the hole through the rubber membrane 7. The rubber membrane 7 has multiple layers to prevent damage and leakage while ensuring the freedom of the rubber hose 8 in different directions, which is convenient for wiring.

Claims

1. A through-hole sheath structure for automotive wiring harnesses, comprising a sheath body (1) and a threaded tube (2), characterized in that, A rubber membrane (7) is installed inside the sheath body (1). The threaded tube (2) is installed on the left side of the sheath body (1), and a clamping block (3) is threadedly connected to the outer side of the threaded tube (2). A swivel handle (4) is installed on the outer side of the clamping block (3), and the swivel handle (4) and the clamping block (3) are welded together.

2. The automotive wiring harness through-hole sheath structure according to claim 1, characterized in that, A sealing gasket 2 (6) is installed on the inner side of the sheath body (1), and the sealing gasket 2 (6) is bonded to the sheath body (1).

3. The automotive wiring harness through-hole sheath structure according to claim 1, characterized in that, A sealing gasket (5) is installed on the inner side of the clamping block (3), and the sealing gasket (5) is bonded to the clamping block (3).

4. The automotive wiring harness through-hole sheath structure according to claim 1, characterized in that, A rubber hose (8) is installed inside the rubber membrane (7), and the rubber hose (8) and the rubber membrane (7) are connected by an embedded connection.

5. The automotive wiring harness through-hole sheath structure according to claim 4, characterized in that, The rubber hose (8) is fitted with a soft pad (9) inside, and the soft pad (9) and the rubber hose (8) are slidably connected.

6. The automotive wiring harness through-hole sheath structure according to claim 4, characterized in that, A sealing assembly (10) is installed on the periphery of the rubber hose (8), and the sealing assembly (10) and the rubber hose (8) are connected by an embedded connection.

7. The automotive wiring harness through-hole sheath structure according to claim 6, characterized in that, The sealing assembly (10) includes a cable tie (1001) and a fixing block (1002), and the fixing block (1002) is slidably connected to the periphery of the cable tie (1001).