The characteristic research of contact insertion and separation force in connector

The characteristics of insertion and separation force, as well as the influence of various geometric shapes, sizes, and frictional coefficients on insertion and separation force are studied. A series of mathematical models and some appropriate practical curves are presented. Experimental results show that the peak insertion force of contacts relates to the geometric shape and surface roughness of the guiding head. Both theoretical analysis and experimental results prove that a guiding head of constant slope has a good insertion performance, but requires high peak insertion force. The end of a mate contact is usually designed as an arc guiding head. An arc guiding head has a poor insertion performance, but requires low peak insertion force. The results show that for the male contact a small insertion force can be obtained by selecting suitable geometric shapes and sizes without reducing contact force