Electrical switch having a two-stage snap action interface...

Details Electrical switch having a two-stage snap action interface... Electrical switch having a two-stage snap action interface...

H - Electricity

01

H

H01H 5/00 (2006.01) H01H 37/66 (2006.01) H01H 5/02 (2006.01) H01H 37/52 (2006.01) H01H 37/60 (2006.01)

Patent

CA 2105429

ELECTRICAL SWITCH HAVING A TWO STAGE SNAP ACTION INTERFACE FOR ENHANCED OPERATION ABSTRACT OF THE DISCLOSURE An electrical switch assembly includes a snap action switch which is actuated from one to another conduction state by a snap action interface mechanism moved by an external actuation element between first and second corresponding positions. The snap action interface mechanism prevents the snap action switch from operating improperly when the external actuation element is of the type which provides a slowly moving, low actuation force. A preferred embodiment has as a part of the interface mechanism, a lever having a ferromagnetic portion which snaps between the first and second positions under the influence of at least one magnet. The switch assembly is particularly suitable for actuation by the bimetal coil strip which commonly forms the temperature responsive element in a thermostat.

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