Water-proof wiring harness and manufacture method thereof

Abstract

The invention discloses a water-proof wiring harness and a manufacture method thereof. The structure comprises a wiring harness, an inner filler and an outer wrappage, wherein the outer surface of the wiring harness is coated with the inner filler; and the outer wrappage is wrapped out of the wiring harness of which the outer surface is coated with the inner filler. The manufacture method comprises the following steps of: putting the inner filler on the outer surface of the wiring harness which needs to pass through a sealing cavity part; covering the inner filler with the outer wrappage with the proper internal diameter; heating the outer wrappage by a heat gun; ensuring that the outer wrappage is shrunk when meeting heat so as to extrude the inner filler; enabling the inner filler to be permeated into gaps in the wiring harness; enabling the processed wiring harness to be penetrated into the sealing cavity; and locking the wiring harness covered by the outer wrappage by a cable clip. According to the water-proof wiring harness and the manufacture method disclosed by the invention, the outer wrappage is heated to ensure that the inner filler in the wiring harness fully permeates and can not move so as to take a good water-proof insulating effect.

Description

technical field [0001] The invention relates to a wire harness and a manufacturing method thereof, in particular to a waterproof wire harness and a manufacturing method thereof. Background technique [0002] During the wire harness wiring process, it is often the case that the wire harness needs to enter the sealed cavity from the drenchable part. Because there is a gap between the wire harnesses, when the wire harness is poured with water, due to the capillary effect, the water will penetrate into the sealed cavity, resulting in unqualified products. When encountering the problem of water seepage in the wire harness due to the capillary effect, in the past, the only way to apply viscous sealant to the wire harness is to hope that the viscous sealant can fill the gaps in the wires. However, after the gluing is completed, the wiring harness needs to be re-routed, and the wiring harness will be deformed. Even if the sealant is applied in place in the previous process, it is d...

AI Technical Summary

Problems solved by technology

However, after the gluing is completed, the wiring harness needs to be re-routed, and the wiring harness will be deformed. Even if the sealant is applied in place in the previous process, it is difficult to avoid new gaps after the wiring link, so that water leakage will occur again

[0003] The original operation method requires high operating skills of employees, and the success rate is low, which seriously affects product delivery

Since the original method mainly relies on the proficiency of the employees in operating techniques, and after the glue is applied, the wiring harness needs to be formed and routed, so the originally coated wiring harness is prone to sticky sealant cracking and other phenomena, and cannot be waterproofed. Effect

Since the water spray test is often carried out after the product is assembled, it is found that the product leaks after the assembly is completed, and the workload of re-gluing the wiring harness is huge, and the quality is still not guaranteed

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