De-bouncing keypad and preparation method thereof
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United States of America Patent
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Mar 5, 2019
Grant Date -
May 11, 2017
app pub date -
Jul 15, 2015
filing date -
Jul 21, 2014
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Abstract
The present invention discloses a de-bouncing keypad and a preparation method thereof, wherein the keypad is composed of a rubber substrate and a metal contact having three layers of layered structures. A layer of tin alloy or lead alloy is plated on a surface of the metal contact by electroplating or chemical plating. The metal contact plated with the tin alloy or lead alloy has excellent contact bouncing resistance and arc-ablation resistance, and the metal contact is further composited with the rubber to shape and prepare the rubber de-bouncing keypad.
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