Poor contact of the terminal wires

Among the connecting lines, the terminal line is one of the major categories. It is often used to process internal wiring of various electrical appliances and home appliances, making the connection easier, and the volume of electronic products is greatly reduced, and the cost of production is also reduced. Production efficiency has been improved. However, the premise of these benefits is that the production process is strictly controlled and no bad conditions can occur. In general, there are three main types of defective terminal wires, namely poor contact, poor insulation, and poor fixing. The following three cases are introduced by the wire harness manufacturer Konnra Electronics.

First, the terminal line is in poor contact
The contacts of the terminal wires must have an excellent structure, stable and reliable contact retention and good electrical conductivity. Because the metal conductor inside the terminal wire is the core component of the terminal, it transfers the voltage, current or signal from the external wire or cable to the corresponding contact of the connector to which it is mated.
On the other hand, due to the unreasonable design of the contact structure of the terminal wire, the material selection is wrong, the mold is unstable, the processing size is poor, the surface is rough, and the surface treatment process such as heat treatment plating is unreasonable. In addition, improper assembly, poor storage and use, improper operation, will cause poor contact of the terminal wires at the contact and mating parts of the contact.
Second, the terminal line insulation is poor
The insulator function of the terminal wires is to keep the contacts in the correct position and to insulate the contacts and the contacts from each other between the contacts and the housing. Therefore, the insulation must have excellent electrical properties, mechanical properties and process forming properties. In particular, with the high density and wide use of miniaturized terminals, the effective wall thickness of the insulator is getting thinner and thinner. This is also a higher requirement for the insulation material of the terminal wire, the precision of the injection mold and the molding process.
On the other hand, due to the presence of metal excess on the surface or inside the insulator of the terminal wire, surface dust, flux, and the like are contaminated. Organic material precipitates and harmful gas adsorption film and surface water film fuse to form ionic conductive channels, moisture absorption, mildew, insulation material aging and other reasons, will cause short circuit, leakage, breakdown, low insulation resistance, etc., resulting in terminal lines Poor insulation.
Third, the terminal line is not properly fixed
The insulator of the terminal wire not only acts as an insulator, but also provides precise centering and protection for the extended contact piece, and also has the function of mounting and locking and fixing on the device. If the terminal line is not properly fixed, the lighter will affect the contact and cause a momentary power failure. The serious result is the disintegration of the product.

The disintegration refers to the abnormality between the plug and the socket caused by the unreliable structure caused by the material, design, process, etc., due to the material, design, process, etc., and the abnormal separation between the pin and the jack will cause the control system to generate electric energy. Serious consequences of transmission and signal control interruptions. Due to unreliable design, incorrect material selection, improper selection of molding process, poor quality of heat treatment, mold, assembly, welding, etc., the assembly is not in place, etc., which will cause the terminal line to be poorly fixed.