Key switch

Details Key switch Key switch

1999-06-11

2000-10-17

Friedhofer, Michael

Electricity: circuit makers and breakers

Solid contact

Membrane type

200345, H01H 1314

Patent

active

061335398

ABSTRACT:
A key switch comprises a key cap, a support device, a support board, a membrane circuit, and a base. A number of slots formed on sides of the support device engage with hooks of the key cap whereby the key cap is slidably engaged with the support device. A number of protrusions outwardly extends from edges of a bottom surface of the support device to engage corresponding U-shaped positioning portions. Thus, the height of the key switch is limited and the assembly thereof is simplified.

REFERENCES:
patent: 4515999 (1985-05-01), Harper
patent: 5120923 (1992-06-01), Kato et al.
patent: 5172990 (1992-12-01), Weng
patent: 5380969 (1995-01-01), Yang
patent: 5418530 (1995-05-01), Moore et al.

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