公开(公告)号：US12278062B2

公开(公告)日：2025-04-15

申请号：US18029379

申请日：2021-09-22

Applicant: NANTONG MEMTECH TECHNOLOGIES CO., LTD

Inventor： Huisheng Han ,  Yang Ding ,  Lu Chen ,  Hongmei Zhang ,  Linyu Ye ,  Xiaosheng Wu ,  Guoqiang Wu ,  Cheng Huang

IPC: H01H1/021 ,  H01H11/04

Abstract: A rubber and metal composite electric contact and a preparation process therefor. The rubber and metal composite electric contact is a circular layered complex which is formed by tightly combining a metal sheet layer having a plurality of through holes and a rubber layer by means of thermal vulcanization molding and which has a thickness of 0.1 to 5 mm and a diameter of 1 to 15 mm. There is no isolation layer between the rubber layer and the metal layer of the electric contact, so no rubber overflows the outer surface of the metal layer. In the rubber and metal composite electric contact, the rubber and metal are combined firmly and the overall strength of the electric contact is adjustable; the electric contact also has good dust resistance; and the electric contact thus has stable and reliable electrical conductivity.

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.