Electricity: circuit makers and breakers – Solid contact – Push button operated
Patent
1990-07-20
1991-04-02
Luebke, Renee S.
Electricity: circuit makers and breakers
Solid contact
Push button operated
200308, H01H 1302
Patent
active
050048805
ABSTRACT:
A push button switch including a casing unit composed of an upper casing and a lower casing, a switch device provided in the casing unit, a stem slidably supported to the casing unit for switching on and off the switch device, an elastic member for normally elastically biasing the stem in such a direction as to restore an initial condition of the stem, and a clicking leaf spring adapted to abut against the stem for giving a click feeling to an operator upon depression of the stem. The clicking leaf spring is made up of a base portion having opposite ends abutting against opposed inner surfaces of the upper casing and the lower casing and thereby being held between the upper casing and the lower casing, and a spring portion split from the base portion by a pair of slits each having a closed end. A spring fulcrum is defined by the straight-line distance between the closed ens. The spring portion is such that it is removed from both the upper casing and the lower casing. Upon depression of the stem, the spring portion of the leaf spring is elastically deformed at the spring fulcrum thus increasing a deformation span of the spring portion.
REFERENCES:
patent: 4467160 (1984-08-01), Murmann et al.
Alps Electric Co. ,Ltd.
Heid David W.
Luebke Renee S.
Shoup Guy W.
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