Keyswitch assembly

Details Keyswitch assembly Keyswitch assembly

1993-03-18

1994-07-12

Luebke, Renee S.

Electricity: circuit makers and breakers

Electric switch details

Actuators

H01H 312

Patent

active

053290844

ABSTRACT:
The present invention provides a keyswitch assembly having a key restrained from horizontal movement and from free vertical movement so that the key will not be moved by an accidental light touch to the key while providing a satisfactory touch of the key and reliable switching action. Pairs of pins formed at the opposite ends of four support members, four upper guide portions and four lower guide portions cooperate to support a key for vertical movement. The respective inner surfaces of the guide portions are substantially in contact with the respective outer surfaces of the support members, each with a very small clearance therebetween, respectively. A pressure plate, mounted on an elastic switching member, and the support members cooperate to support the key. Thus, the key is restrained from horizontal movement and from free vertical movement.

REFERENCES:
patent: 4580022 (1986-04-01), Oelsch et al.
patent: 4902862 (1990-02-01), Oelsch et al.
patent: 5268545 (1993-12-01), Bruner
patent: 5278371 (1994-01-01), Watanabe et al.

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