Common fixing methods and use of automotive wiring harnesses

Harness fixing design is the harness layout and direction design is very important one, its main form mainly has tie, snap and bracket. Tie: tie is fixed harness use z more protective materials, mainly made of PA66 material. Most of the fixing of the wire harness is completed by the tie. The role of the tie is to fasten the wire harness, so that it is firmly and reliably fixed in the body metal plate holes, bolts, steel plate and other parts of the body, to prevent the wire harness vibration, displacement or interference with other parts of the damage to the wire harness. Although there are many types of ties, but according to the type of cardboard metal can be divided into the following types: card round hole type tie, card waist round hole type tie, card bolt type tie, card steel plate type tie, etc.; round hole type tie is mostly used for the metal plate is relatively flat, the wiring space is large, the wiring harness runs smoothly, such as the cab. The diameter of the round hole is generally 5 to 8mm; waist round hole type tie is mostly used for the thicker trunk or branch of the wiring harness. This kind of tie can't be rotated freely after installation, and the fixed stability is strong. Mostly used in the front compartment, the diameter of 12 × 6mm, 12 × 7mm); clevis bolt type ties are mostly used for thicker sheet metal or uneven, the harness runs irregularly, such as the firewall. The apertures are generally 5mm and 6mm; steel cleat type ties are mainly used to clamp the metal plate at the edge of the sheet metal to make the wiring harness transition smoothly and avoid the wiring harness from being scratched by the edge of the metal plate. It is mainly used at the wiring harness and rear bumper in the cab. The thickness of the metal plate is generally 0.8~2.0mm. buckle: the role of the buckle is the same as the strap, are fixed protective belt. There are PP, PA6, PA66, POM and other materials. Commonly used types of buckles are T-type buckle, L-type buckle, pipe clip buckle, connector buckle, etc.; T-type buckle and L-type buckle is mainly used for wiring harness wiring space due to the installation of external trim and narrow or the wiring harness itself is not suitable for punching the location of the wiring harness, such as the edge of the wiring harness cab roof, generally round holes or waist round holes; pipe clamps are mainly used for places where it is not suitable for punching or can not be punched, such as the engine body, generally tongue type sheet metal; connector clips are mainly used to cooperate with the connector, used to fix the connector on the body. Generally round holes, waist round holes or keyholes. This type of snap is highly targeted. Generally a certain type of snap can only be used for the corresponding series of connectors.

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