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Protection method six: rubber sheath

Rubber sheaths, also known as rubber parts, through-hole rubber parts, and door rubber parts, are often used to protect automobile wiring harnesses when they pass through the sheet metal parts of warehouses and doors.

Protection method seven: bracket guard

The wiring harness bracket guard plate is not universal, and the design of the bracket guard plate is different for different models. This kind of bracket guard plate is expensive in the early stage of research and development, and needs to design molds for production. In order to control the overall cost of the vehicle, most manufacturers will not This protection method is widely used.

The three-dimensional layout of the electrical system mainly refers to the use of three-dimensional software such as CATIA and PRONE to arrange the electrical components, wire harnesses and related fixed structures of the vehicle on the vehicle. It includes two parts: three-dimensional layout of electrical devices and three-dimensional layout of electrical wire harnesses. Among them, electrical devices mainly Arrange according to the specific structure of the vehicle. This article summarizes some basic principles and precautions based on the actual three-dimensional layout experience of automotive wiring harnesses. It mainly elaborates on the aspects of wiring harness assembly, wiring harness maintainability, and wiring harness safety and reliability, and provides a basic design for the three-dimensional layout design of automotive electrical wiring harnesses. guidelines.

1. The general process of three-dimensional layout of automobile wiring harness

The three-dimensional layout of the automotive electrical system is carried out according to the design process shown in Figure 2. The electrical system of the whole vehicle is divided into different modules such as chassis, instrument panel, engine, and transmission according to different positions, and the electrical equipment is first arranged for each module. This work is jointly completed by the electrical system designer and the vehicle system engineer. After the electrical equipment layout plan is determined, the wiring harness direction design is started, and the wiring harness direction design is carried out according to the principle of automotive electrical wiring harness layout, and the direction plan is verified until it is reasonable. After completing the direction design of the electrical wiring harness, determine the fixing method and structure according to the direction of the wiring harness, and verify the strength and interference of the fixing method and structure, and draw a two-dimensional diagram of the electrical wiring harness and a two-dimensional diagram of the related fixed structure according to the final design plan. The following mainly discusses the basic design principles and precautions in the process of automotive wiring harness layout.

2. Basic principles and precautions for automobile wiring harness layout

When designing the three-dimensional direction of the automotive wiring harness, the electrical components of the vehicle must be comprehensively considered based on the specific conditions of the wiring harness attachments such as the car body and the frame. When designing the wire harness layout, the problem of wire harness fixing should also be considered. The fixing method and the number of fixed points should be determined according to the metal structure and the mechanical structure of the vehicle. When there are many controllers and they need to be arranged centrally, the layout of the controllers should also be considered. Think hard.

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