Components of automobile wiring harness

2021-11-25

In the modern automobile, there are many wiring harnesses, and electronic control system has a close relationship with wiring harnesses. Someone has played an image of the metaphor: if the computer, sensor and executive components of the function of the human body to metaphor, can say that the computer is equivalent to the human brain, sensor is equivalent to the sensory organ, executive components are equivalent to the motor organ, so the harness is nerve and blood vessels.

Body wiring harness, engine wiring harness, instrument panel wiring harness, door wiring harness, front wiring harness, automobile wiring harness is generally designed into H and E type, some simple also designed into T type.

Automobile wiring harness is the main body of automobile circuit network, without wiring harness there would be no automobile circuit. A wire harness is a component that forms a connecting circuit after crimping the contact terminals (connectors) made of copper and wires and cables with plasticized pressed insulators or metal shells outside.

Wire harness industry chain includes wire and cable, connector, processing equipment, wire harness manufacturing and downstream application industry. Wire harness is widely used in automobiles, household appliances, computer and communication equipment, all kinds of electronic instruments and meters, etc. The body wire harness connects the whole body, and the general shape is H-shaped.

No matter luxury business cars or ordinary economy cars, the components of car harness are basically the same. What are the components of the car harness?

1. Wire:

1.1. All automobile wires are copper multi-core wires, and the outer layer of the wires is wrapped with plastic insulating tubes. This ensures that the wire is soft and not easy to break.

1.2 the wires of automobile harness have various specifications, and the current value of each specification load is different, which is used for the wires of equipment with different power.

2. Connector:

The selection of connectors ensures good contact with electrical parts, minimizes contact resistance and improves reliability.

2.1 sheath material:

When designing plug-ins, different materials can be selected according to different needs, and flame retardant or reinforcing materials can be added to plastics according to the actual situation, so as to achieve the purpose of strengthening or flame retardant.

2.2 terminal material:

The copper used for connectors is mainly brass or bronze (the hardness of brass is slightly lower than that of bronze), in which brass accounts for a large proportion. In addition, different coatings can be selected according to different needs.

3. Wrapping tape:

3.1 purpose:

Use casing and tape to protect the product, which plays the role of wear resistance, high temperature resistance, flame retardant, corrosion prevention, interference prevention, noise reduction and beautification.

2. Method:

For safety and convenience of processing and maintenance, the harness is basically wrapped with plastic adhesive tape.

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