Key switch and keyboard input device using the same

Details Key switch and keyboard input device using the same Key switch and keyboard input device using the same

2006-08-22

2006-08-22

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Actuators

Reexamination Certificate

active

07094984

ABSTRACT:
A key top of a key switch is formed so as to extend in a horizontal direction, not in a vertical direction. On a rear surface of the key top, a reinforcing member that horizontally extends is mounted on one end portion in the vertical direction and a torsion bar that horizontally extends is rotatably supported on the other end portion in the vertical direction. When the key top is pressed against a biasing force of an elastic member, the reinforcing member prevents the key top from deforming.

REFERENCES:
patent: 5669723 (1997-09-01), Chang
patent: 6011227 (2000-01-01), Yoneyama
patent: 6100482 (2000-08-01), Koma et al.
patent: 6107584 (2000-08-01), Yoneyama
patent: 6597344 (2003-07-01), Narusawa et al.
patent: 6657139 (2003-12-01), Hasunuma
patent: 6689977 (2004-02-01), Ito et al.
patent: 6723935 (2004-04-01), Watanabe
patent: A1 3067837 (2000-01-01), None

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