Clicked key board switch

Details Clicked key board switch Clicked key board switch

1989-04-11

1990-07-17

Recla, Henry J.

Electricity: circuit makers and breakers

Solid contact

Membrane type

200341, 200332, H01H 110

Patent

active

049422766

ABSTRACT:
A clicked key board switch capable of minimizing an error or deviation between a position at which click feeling is produced and a position at which the switch is turned on while reducing the number of parts. In the switch, when a key stem slidably arranged in a frame is pushed down, a membrane switch is forcedly operated through a pressing element provided in the frame. The pressing element includes a base fixed at an upper end thereof on the side of the frame and provided thereon a projection engaged with the key stem when it is pushed down and a pressing section connected to the base so as to extend from the base to a position above the membrane switch and forcedly operating the membrane switch when the base is laterally forced by the key stem.

REFERENCES:
patent: 3909564 (1975-09-01), Scheingold et al.
patent: 3982081 (1976-09-01), Demler, Jr.
patent: 4486637 (1984-12-01), Chu
patent: 4553009 (1985-11-01), Van Zeeland
patent: 4800245 (1989-01-01), Murmann et al.
patent: 4831223 (1989-05-01), Wako

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