Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent
1977-02-16
1979-05-08
Hart, Ro E.
Electricity: circuit makers and breakers
Electric switch details
Actuators
H01H 312
Patent
active
041538293
ABSTRACT:
A pushbutton switch is disclosed which comprises a housing and a contact unit contained in the housing. The contact unit includes a fixed contact member, a movable contact member disposed in parallel, spaced relation with the fixed contact member, an insulating member interposed between the fixed and movable contact members and formed with an opening. The movable contact member has a snap-action disc portion preformed so as to bow at its center away from the fixed contact member so that when the disc portion is pushed it is snapped to project through the opening of the insulating member into contact with the fixed contact member. The contact unit also includes a resilient member disposed adjacent the movable contact member and having a projection extending toward the center of the disc portion for pushing the disc portion. A spring member is provided to have a zigzagged portion for pushing the resilient member toward the movable contact member. Also provided is a lever supported for reciprocating movement in the housing to push the zigzagged portion so as to drive the resilient member, thereby accomplishing a contact between the fixed contact member and the movable contact member.
REFERENCES:
patent: 3674970 (1972-07-01), Bedocs
patent: 3969600 (1976-07-01), Sims
patent: 3978297 (1976-08-01), Lynn
patent: 4029916 (1977-06-01), Chu
patent: 4056700 (1977-11-01), Stanner
Alps Electric Co. ,Ltd.
Dunne Gerard F.
Hart Ro E.
Shoup Guy W.
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