公开(公告)号：US10026565B2

公开(公告)日：2018-07-17

申请号：US14896405

申请日：2014-11-12

Applicant: NANTONG MEMTECH TECHNOLOGIES CO., LTD.

Inventor： Huisheng Han ,  Hongmei Zhang ,  Yuan Chen ,  Yang Ding ,  Guoqiang Wu

IPC: H01H1/02 ,  H01H1/021 ,  H01H1/06 ,  H01H11/04 ,  C23C18/31 ,  C23F1/16 ,  C23F1/32 ,  C25D3/12 ,  C25D3/48 ,  C25D7/00 ,  C08J5/12 ,  B32B15/06 ,  B32B15/18 ,  B32B15/20 ,  B32B25/20

Abstract: A switch contact element, having a layered structure comprising three layers: the bottom layer is silicone rubber, the middle layer is a continuous base metal sheet layer, and the upper layer is a discontinuous (stripe-shaped, raised-point-shaped or lattice-shaped) precious metal plated layer or a double-metal composite layer of a discontinuous base metal plated layer and a precious metal plated layer. The thickness of the bottom layer is greater than that of the middle layer, the thickness of the middle layer is greater than that of the upper layer, and the thickness of the upper layer meets the conditions that the conductive current is greater than safe current of conductive contacts on a circuit board, and the service life of a switch for the design is ensured.