Low profile keyboard switch

Details Low profile keyboard switch Low profile keyboard switch

H - Electricity

03

M

340/178, 340/135

H03M 11/00 (2006.01) H03K 17/975 (2006.01)

Patent

CA 1194182

LOW PROFILE KEYBOARD SWITCH ABSTRACT OF THE DISCLOSURE A capacitance keyboard switch is provided which is of substantially reduced vertical dimensions for reducing in a keyboard the overall space require- ments therefore. The switch of the invention has an overall height of only 0.750 inches (19.05 mm), and a length of travel of as much as 0.150 inches (3.81 mm). This is achieved by eliminating a housing for the switch altogether, utilizing a cooperating plunger-snap-in guide combination, and a single sheet movable capacitor plate which cooperates with a plate on the printed circuit board. In addition, the entire assembly is mounted and supported on the printed circuit board with the components snapped together without the use of separate hardware, such as screws or nuts.

414772

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