Wear parameters must be considered in the connector design process. Because wear will directly affect the overall service life of the connector, strict testing must be carried out to ensure that the connector can meet the requirements and specifications. In this paper, the manufacturer of UPZB electronic connector mainly shares the wear problem of the connector for everyone, which is the key to the degradation of contact normal force!

Wear is a factor that indirectly leads to the degradation of connector performance. If the wear of connector contact surface exposes the contact base metal, additional corrosion sources will be directly introduced at the contact interface and affect the contact normal force of connector. The loss of contact normal force is an indirect connector degradation mechanism, because it increases the possibility of contact interface fretting during the service life of the connector.

Fretting will lead to fretting corrosion of tinned connectors and fretting wear in noble finished product systems. In both cases, the loss of contact normal force will lead to an increase in sensitivity to fretting, thus leading to corrosion related degradation and an increase in contact resistance.

In short, the contact normal force of the connector is generated by the deflection of the socket contact beam when the plug contact is inserted into the socket, because the connector mating process will generate contact force. However, due to the incorrect alignment of the connector in the fitting process, excessive stress on the contact beam may occur during the fitting process of the connector.

Although many connectors have anti stress functions, such as alignment function or beam stop, to reduce the possibility of contact force reduction due to permanent deformation. However, in the case of a double beam contact system, if the connectors are not paired correctly, the increase in the gap between the two beams will prove this permanent deformation. Especially when the connector is re inserted, the overstressed beam will reduce the contact force.
The above explanation that connector wear is the key to the degradation of contact normal force is shared here. If you want to know about other aspects of the connector industry, you can follow the official website or WeChat official account of Hezhong Baogen Electronics.