Pushbutton switch
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United States of America Patent
Stats
-
Apr 16, 1996
Grant Date -
N/A
app pub date -
Jan 17, 1995
filing date -
Jan 21, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pushbutton switch is provided comprising a pushbutton having its lower portion inserted in a pushbutton housing section and being formed in its lower end with a pin accommodating hole; a pin having its upper end portion resiliently held in the pin accommodating hole by a coil spring; and a movable contact support having a movable contact piece therein and held in a switch housing section for seesaw motions by the lower end of the pin, whereby electric connection of the common contact is switched between two fixed contacts. A spring retainer plate to which the lower end of the coil spring is fixed is housed in the switch housing section for vertically upward and downward sliding movements. The spring retainer plate is formed at its opposite ends with legs depending therefrom for always maintaining the posture of the spring retainer plate parallel to the bottom panel. A switching member is interposed between the undersurface of the spring retainer plate and the top surface of the movable contact support so as to transmit the resilient force of the coil spring from the spring retainer plate to the movable contact support through the switching member to thereby hold the tilt of the movable contact support in a 'bistable' manner.
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