In the automotive wiring harness products, the main function of the wiring harness guide groove is to secure the wiring harness in the narrow and irregular concealed space of the car and fix it with the body. In places where the ambient temperature is relatively low, such as the passenger compartment area, high polymer plastics are used as the material for the harness guide groove. In harsh environments such as high temperature and vibration, such as the engine compartment, select materials with higher temperature resistance, such as nylon reinforced with glass fiber.
Traditional engine wiring harnesses are protected by corrugated tubes. The wiring harness completed by this design has the characteristics of low cost, simple and flexible manufacture. However, the corrosion resistance and anti-pollution ability of the finished wire is poor, especially dust, oil, etc. can easily penetrate into the wire harness.
The wiring harness completed by polyurethane foam molding has good orientation and is easy to install. Workers only need to follow the forming direction and path after getting the wiring harness to complete the installation in one step, and it is not easy to make mistakes. The wire harness made of polyurethane has many characteristics superior to ordinary wire harnesses, such as strong oil resistance and dust resistance, and no noise after installation of the wire harness, and can be made into various irregular shapes according to the free three-dimensional shape of the body space.