Multiple-width keyswitch capable of inhibiting noise thereof ind

Details Multiple-width keyswitch capable of inhibiting noise thereof ind Multiple-width keyswitch capable of inhibiting noise thereof ind

1999-08-20

2000-10-24

Gellner, Michael L.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200341, H01H 1370

Patent

active

061370711

ABSTRACT:
An improved multiple-width keyswitch capable of inhibiting noise thereof induced during operation is provided. The multiple-width keyswitch includes a keycap and a substrate. During operation, the keycap moves vertically relative to the substrate. The keycap defines a lower surface which is provided with a plurality of bosses. The substrate is provided with a plurality of openings. Each of the plurality of openings is disposed under one corresponding boss and covered with a deformable layer. When the keycap moves downward to turn on the keyswitch, each of the bosses first impacts the deformable layer into the corresponding opening such that the impact energy of the keycap is absorbed by the deformable layer. Thereby the noise induced by the impact of the keycap can be effectively inhibited. Embodiments and equivalent modifications of the invention are described in detail in the specification.

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patent: 5823325 (1998-10-01), Lin
patent: 5950810 (1999-09-01), Pan et al.
patent: 6004051 (1999-12-01), Hu

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