Precautions for automobile wiring harness layout and layout

11 02 2021

With the continuous improvement of modern automobile safety, comfort and environmental protection requirements, the number of circuits and power consumption on automobiles have increased significantly. As a result, a large number of wiring harnesses are used in limited automobile space. How to arrange more effectively and reasonably has become the automobile manufacturing industry. For the problems faced, this article focuses on the layout of the automotive wiring harness, and gives an overview of the precautions for the layout of the automotive wiring harness.
1. The wiring harness fixing points are arranged reasonably, and the fixing is reliable
(1) According to the actual installation position of the wire harness on the whole vehicle, in order to avoid sagging and shifting of the wire harness, considering the weight, fixing method and convenience of the fixing position of the wire harness, the wire harness must have sufficient and reasonable fixing points and fixing methods Fix it.
(2) Set fixed points according to the direction of the wire harness and the specific shape of the car body. The distance between the two fixed points on the straight line distance without the fulcrum is generally not more than 300mm; one fixed point can be arranged at the obtuse corner position; two fixed points need to be arranged at the right-angle corner Point; avoid sharp corners in the wiring harness.
(3) Select the type and size of the fixed buckle according to the shape and outer diameter of the wire harness, and meet the needs of bearing the weight of the wire harness.
(4) Consider setting a fixed point at the position of the connector connected to other wiring harnesses and electrical devices, and a suitable position not greater than 120mm in front of the connector.
(5) Consider setting a fixed point on the trunk line at the position of the fulcrum, and the distance from the fixed point to the fulcrum is not more than 100mm.
(6) In the installation direction of the fixed buckle, there must be enough space to facilitate the installation and removal of the buckle.
Two, neat appearance, bundled configuration
(1) The wiring harness should be arranged along the edges and along the groove (the wiring groove designed on the car body) to avoid direct pressure on the wiring harness. The wiring harness must not be exposed in the cab; where the wiring harness can be observed, such as the engine room, set eye-catching attraction points or eye-catching colors, and the wiring harness installed here is not protruding or conspicuous.
(2) Arrangement is arranged in a horizontal, horizontal and vertical checkerboard pattern in the projection direction, avoiding diagonal arrangement.

(3) The clearance with the pipeline is uniform, and the clearance with the surrounding parts is reasonable.