Key switch structure for input device

Details Key switch structure for input device Key switch structure for input device

2009-03-24

2010-11-30

Leon, Edwin A. (Department: 2833)

Electricity: circuit makers and breakers

Electric switch details

Actuators

C200S314000, C200S341000

Reexamination Certificate

active

07842895

ABSTRACT:
A key switch structure used in an input device is disclosed to include a circuit module, a key cap supported on a vertically compressible and elastically deformable hollow actuation member of a rubber membrane of the circuit board, a positioning board fastened to the circuit module, and two links arranged in a crossed manner and coupled between coupling portions of the positioning and the key cap to guide vertical movement of the key cap by means of a scissor action when the key cap is pressed by a user to compress the vertically compressible and elastically deformable hollow actuation member in triggering a circuit module to produce a control signal.

REFERENCES:
patent: 6686549 (2004-02-01), Douzono et al.
patent: 7525056 (2009-04-01), Chiba et al.
patent: 7709760 (2010-05-01), Chen et al.

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