Switch contact element and its preparation method
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United States of America Patent
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Jul 17, 2018
Grant Date -
May 5, 2016
app pub date -
Nov 12, 2014
filing date -
Dec 31, 2013
priority date (Note) -
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status (Latency Note)
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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.
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International Classification(s)
- C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- C25D:PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC ....
- C23F:NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM S....
- H01H:ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PR....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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