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：US10026564B2

公开(公告)日：2018-07-17

申请号：US14896403

申请日：2014-09-15

Applicant: NANTONG MEMTECH TECHNOLOGIES CO., LTD

Inventor： Huisheng Han ,  Hongmei Zhang ,  Yang Ding ,  Zhihong Dong ,  Cheng Huang

IPC: H01B13/00 ,  H01H1/02 ,  H01H11/04 ,  C23C18/16 ,  C25D3/46 ,  C25D5/02 ,  C25D5/48 ,  H01H1/023 ,  C25D5/12 ,  C23C18/42 ,  C25D3/48 ,  H01H1/06 ,  C25D3/54

Abstract: This invention discloses a preparation method for precious metal switching contact components by means of plating masking, plating and etching processes. The plating masking process is performed by using a plating mask ink with or without a photo exposure machine. Plating of precious metals is performed by electroless plating or electro plating methods. Etching is carried out with etching solutions containing weak organic acids, weak inorganic acids or acidic buffering agents. Improvement of the etched surface gloss and prevention of the side etching are realized with the sulfur-contained compounds. The dust- and oil stain-resistances of the switch contacts are improved by increasing the etching depth. The switch contacts made by this invention are featured with the advantages of good reliability, good resistance to dust and oil stain, short contact bounce time, long service life, low cost of raw materials and so on.