Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent
1993-09-23
1995-06-13
Cusick, Ernest G.
Electricity: circuit makers and breakers
Electric switch details
Actuators
200517, 200341, H01H 312
Patent
active
054245168
ABSTRACT:
A low profile electronic pushbutton switch, useful for computer keyboards, is provided having stabilization in both of its horizontal axes, thereby preventing binding of the switch's bearing surfaces and preventing tilting of the upper surface of the switch while being operated. The stabilization is achieved by a pair of yokes that are positioned at 90.degree. angles from one another, and which provide stability to keep the upper surface of the pushbutton switch normal to the direction of depression as the switch is actuated. The yokes are mounted via a "living hinge" to the base surface of the keyboard and to a moveable frame portion that is rigidly attached to the upper cap of the pushbutton switch. The yokes are also movably attached, via a pair of stems, to horizontal slots in the moveable frame portion and to the base. As the switch is depressed, the stems of the yokes will move in the horizontal direction within their horizontal slots to allow stabilized vertical movement of the moveable frame portion. The yokes have center portions which are cut out so as to allow the two yokes to be interleaved within one another, thereby allowing the yokes to both fit within the confines of the moveable frame portion. Utilizing this design, the stroke-to-profile ratio is maximized.
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