Membrane for key switch and the key switch

Details Membrane for key switch and the key switch Membrane for key switch and the key switch

2007-04-17

2007-04-17

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

C200S520000

Reexamination Certificate

active

10527399

ABSTRACT:
The present invention provides a key switch diaphragm capable of obtaining a good click feeling and capable of avoiding contact failure and having a high durability. A key switch diaphragm30comprises a thin plate having flexibility and conductivity, and the key switch diaphragm30includes a truncated pedestal16, and a spherical domical portion18being raised toward an upper portion of the pedestal16on the side of the upper portion of the pedestal16. The domical portion18is provided at its substantially central portion with an outwardly raised portion32being raised toward an outer surface of the domical portion18. An edge of the outwardly raised portion32on the side of its inner surface forms a contact34.

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