Nutating snap action switch mechanism

Details Nutating snap action switch mechanism Nutating snap action switch mechanism

H - Electricity

01

H

306/299

H01H 13/28 (2006.01) H01H 13/22 (2006.01) H01H 15/10 (2006.01)

Patent

CA 1189891

RA981002 NUTATING SNAP ACTION SWITCH MECHANISM Abstract An electrical switch actuation mechanism is described. Principally useful for keyboard switch data entry devices, the mechanism operates by means of cammed surfaces to produce a generally nutating, rocking snap action. Depression of the key button moves a stem with cam surfaces on it which contact cammed surfaces on a rocking plate member. The action produces a first rocking motion in a first axis followed by second and third combined snapping and rocking actions about second and third axes in that plane, but at different angular orientations from the first action. A hypothetical vertical axis con- structed through the plane of the rocking member will nutate or process in a generally orbital fashion about a central pivot point. The motion of the plane of the rocking plate may be easily coupled to any of a variety of transducer devices be they contacts, capacitive, optical or inductive.

408727

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