Key switch having elastic portions for facilitating attachment o

Details Key switch having elastic portions for facilitating attachment o Key switch having elastic portions for facilitating attachment o

1994-10-27

1996-04-30

Walczak, David J.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200345, H01H 1370

Patent

active

055127193

ABSTRACT:
A key switch wherein a switching action is effected by movements of a keytop movably connected to a holder via a scissors-type support linkage which consists of first and second links connected pivotally about a common primary pivot shaft. The keytop, holder and first and second links include at least one special secondary pivot shaft each carried by a special support portion, and at least one special bearing portion each engaging the corresponding special secondary pivot shaft. The special support portion and/or the corresponding special bearing portion has/have an elastic portion which elastically yields to allow engagement of the special pivot shaft and the special bearing portion during assembling of the keytop, support linkage and holder.

REFERENCES:
patent: 4433225 (1984-02-01), Cowles
patent: 4580022 (1986-04-01), Oelsch et al.
patent: 4771146 (1988-09-01), Suzuki et al.
patent: 4902862 (1990-02-01), Oelsch et al.
patent: 5268545 (1993-12-01), Bruner
patent: 5278371 (1994-01-01), Watanabe et al.
patent: 5278372 (1994-01-01), Takagi et al.
patent: 5278374 (1994-01-01), Takagi et al.
patent: 5280147 (1994-01-01), Mochizuki et al.
patent: 5399822 (1995-03-01), Sato et al.

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