As far as the connection function is concerned, the mating force is an important mechanical property. The insertion force is divided into insertion force and pull-out force (pull-out force is also called separation force), and their requirements are different. There are regulations on the maximum insertion force and the minimum separation force in the relevant standards, indicating that from the perspective of use, the insertion force should be small, and the separation force is too small to affect the reliability of the contact.
Another important mechanical characteristic is the mechanical life of the connector. Mechanical life is actually a durability index, which is called mechanical operation in GB5095. It takes one plug-in and one-off cycle as a cycle to judge whether the connector can normally complete its connection function (such as contact resistance) after the specified plug-in cycle.
The insertion force and mechanical life of the connector are related to the contact structure of the contact (positive pressure), the coating quality of the contact (sliding friction coefficient) and the alignment accuracy (alignment) of the contact.