Keyswitch of multiple-width key

Details Keyswitch of multiple-width key Keyswitch of multiple-width key

1998-11-16

2000-05-02

Gellner, Michael L.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200341, H01H 1370

Patent

active

060575220

ABSTRACT:
A keyswitch including a keycap, a switch element, a rubber sheet, a housing, a balance lever is provided. The switch element, responsive to the reciprocal movement of the keycap, selectively turns ON. The rubber sheet is disposed on the switch element. The housing includes a pair of hook devices. The hook device and the housing constitutes a slot. A opening is provided on the housing at location corresponding to the hook device. The balance lever includes a longitudinal portion connected to two traverse portions forming an "U" shape. The end of the traverse portion is disposed into the slot corresponding to the hook device. A protrusion is provided integrally on the rubber sheet at location corresponding to the hook device. The protrusion passed the opening and contacts with the end terminals of the traverse portions of the balance lever to lower the noise.

REFERENCES:
patent: 4771146 (1988-09-01), Suzuki et al.
patent: 5878872 (1999-03-01), Tsai

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