Arrangement and processing of automotive wire harness cable

Before arranging the wiring harness, draw the wiring harness diagram in advance, which is different from the circuit schematic diagram. The circuit schematic is an image that describes the relationship between the various electrical parts, which does not reflect how the electrical parts are connected to each other, and is not affected by the size and shape of the individual electrical components and the distance between them. The wiring diagram must take into account the size and shape of the individual electrical components and the distance between them, and also reflect how the electrical components are connected to each other. After the wiring harness factory makes the wiring harness wiring board according to the wiring harness diagram, the wiring is cut and arranged according to the provisions of the wiring board.

The main line bundle of the vehicle is generally divided into the engine (ignition, electric injection, power generation, starting), instrumentation, lighting, air conditioning, auxiliary appliances and other parts, with the main line bundle and branch wiring harness. A vehicle main line has multiple branch harnesses, just like tree poles and tree branches. The main line bundle of the vehicle often takes the instrument panel as the core part and extends back and forth. Due to the length relationship or convenient assembly, the wiring harness of some cars is divided into the front wiring harness (including the instrument, engine, front light assembly, air conditioning, battery), the rear wiring harness (taillight assembly, license plate light, luggage light), the top wiring harness (door, top light, speaker) and so on.

Each end of the wire harness will be marked with numbers and letters to indicate the connection object of the wire, and the operator can see that the mark can be correctly connected to the corresponding wire and electrical device, which is particularly useful when replacing the wire harness. At the same time, the color of the wire is divided into monochrome line and two-color line, and the use of the color is also specified, which is generally the standard customized by the car factory. The industry standard only specifies the main color, such as the provision of single black dedicated to the wire, red monochrome for the power cord, can not be confused. The cord is wrapped with woven thread or plastic adhesive tape, for safety, processing and maintenance convenience, woven wire wrap has been eliminated, and is now wrapped with sticky plastic tape.

The cord is wrapped with woven thread or plastic adhesive tape, for safety, processing and maintenance convenience, woven wire wrap has been eliminated, and is now wrapped with sticky plastic tape. The connection between the wiring harness and the wiring harness, and between the wiring harness and the electrical parts, adopts the connector or the wire lug. The connector is made of plastic and has a plug and socket. The wiring harness is connected with the wiring harness, and the connection between the wiring harness and the electrical parts is connected with the wiring harness or the wire lug. With the increase of car functions, the general application of electronic control technology, more and more electrical parts, more and more wires, and the wire harness will become thicker and heavier. Therefore, the advanced automobile has introduced the CAN bus configuration and adopts the multiplex transmission system.

Compared with the traditional wiring harness, the multiplex transmission device greatly reduces the number of wires and connectors, making the wiring easier.

The conductor of the automobile wire is made of many copper wires twisted, and the twisted conductor has good bending and flexibility. The copper wire of the stranded conductor is drawn by using a wire drawing machine to draw a very thick copper rod through multiple draws. The size of the copper wire is about 0.1~0.4mm, and the thickness of the hair is about the same. The traditional wire drawing machine can only draw one piece of copper wire each time, the copper wire drawn by the single wire drawing machine is drawn at different times, different equipment, its process conditions are very different, mold, lubrication, drawing force, tempering temperature and time and other process parameters are difficult to maintain consistency, such copper wire together, its size, material, metallographic structure, The mechanical elastic modulus and the ultimate elongation at break are very different. At present, the advanced wire drawing machine is a multi-head wire drawing machine with continuous annealing, which can draw a bunch of copper wire at a time, and this bunch of copper wire has more than a dozen. This kind of wire drawing machine occupies a small area, high production efficiency, significant energy saving, less employment, labor intensity. Multi-head wire drawing technology is mainly to ensure the high quality of automotive wires.