Key switch for keyboard

Details Key switch for keyboard Key switch for keyboard

1999-09-21

2000-09-12

Gellner, Michael L.

Electricity: circuit makers and breakers

Electric switch details

Actuators

H01H 1370

Patent

active

061180920

ABSTRACT:
A key switch comprising a base, a key top arranged above the base, a pair of link members interconnected with each other to support the key top above the base and to direct the key top in a vertical direction, a biasing member for elastically urging the key top vertically away from the base, and a switching mechanism for selectively opening and closing an electric circuit in connection with a vertical movement of the key top. Each of the link members includes opposed first and second side walls, slide portions formed at one ends of the first and second side walls to be slidably engaged with the base, pivot portions formed at halfway points of the first and second side walls to be pivotably engaged with the key top to define a pivot axis of each link member, a joint shaft provided at another end of the first side wall to project from the first side wall, and a joint slot provided at another end of the second side wall to permit the joint shaft to be slidably and pivotably received in the joint slot of counterpart link member.

REFERENCES:
patent: 5779030 (1998-07-01), Ikegami et al.
patent: 5828015 (1998-10-01), Coulon

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