Key switch
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United States of America Patent
Stats
-
Jul 6, 2004
Grant Date -
Oct 10, 2002
app pub date -
Mar 26, 2002
filing date -
Mar 26, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A base button 4 wuth a button depressing surface and a shaft portion, and a shaft supporting portion for slidably supporting the shaft portion of the button base 4 are provided. A switch base installable on a print wiring board, a contact rubber providing a conductive portion at a position facing the print wiring board , and a light emitting portion provided on the print wiring board are also included. The shaft portion is lowered by depressing the button depressing surface of the button base 4 and the conductive portion of the contact rubber is lowered until the conductive portion contacts an electrical contact on the print wiring board. Thus, an electrical contact function is exerted and the light emitting portion emits light, when the conducts portion comes into contact with the electrical contact.
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