Keyboard device

Details Keyboard device Keyboard device

1997-08-08

1999-10-19

Walczak, David J.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200345, H01H 1370

Patent

active

059672986

ABSTRACT:
In conventional keyboard devices, since an elastic member is disposed between an insulating substrate and the central crossing part of levers, it is impossible to realize a thin keyswitch, and a high cost is required to modify the height of the keyswitch to a desired value required in a specific application. The invention provides a keyboard device having no such problems. In the keyboard device of the invention, a first and second levers are combined with each other via a shaft such that they cross each other; an elastic member is disposed in a hollow formed in the first or second lever; and the top portion of the elastic member is in contact with the pedestal formed on the back surface of the keytop. This structure allows a reduction in space between the keytop and the top portion of the elastic member. Thus, it is possible to realize a thin-type keyboard device, and it is also possible to accommodate the requirement of various heights of keyswitches simply by making a modification on the keytop. This allows a reduction in production cost.

REFERENCES:
patent: 5280147 (1994-01-01), Mochizuki et al.
patent: 5457297 (1995-10-01), Chen
patent: 5630501 (1997-05-01), Tsay

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