Patent ID: 7884312
Filing Date: 2011-02-08
Classification: G01D,H01H,H03K

Abstract:
1. A sensor device comprising: a casing including a base wall, and a plurality of sidewalls extending transversely from a peripheral end of said base wall and cooperating with said base wall to define a receiving space that has an open end opposite to said base wall, said sidewalls including two opposite first sidewalls and two opposite second sidewalls transverse to said first sidewalls, said base wall having an inner surface facing said receiving space, each of said second sidewalls being rooved to form first proximity to said first sidewalls, respectively; an emitter disposed in said receiving space in proximity to one of said first sidewalls and including an emitter element to emit a light signal, an emitter substrate body connected electrically to said emitter element and having two opposite first connecting portions, and an emitter transparent body fixed to a portion of said emitter substrate body between said two first connecting portions and covering said emitter element, said emitter transparent body being disposed between and engaged to said second sidewalls, said first connecting portions engaging respectively said first engaging grooves of said second sidewalls; a receiver disposed in said receiving space in proximity to the other one of said first sidewalls and including a receiver element to receive said light signal, a receiver substrate body connected electrically to said receiver element and having two opposite second connecting portions, and a receiver transparent body fixed to a portion of said receiver substrate body between said two second connecting portions and covering said receiver element, said receiver transparent body being disposed between and engaged to said second sidewalls, said second connecting portions engaging respectively said second engaging grooves of said second sidewalls; a cover body disposed in said receiving space between said second sidewalls and between said emitter and said receiver, said cover body having an inner surface; said cover body, said emitter, and said receiver cooperatively closing said open end of said receiving space; a ball chamber formed between said inner surfaces of said base wall and said cover body; a ball member disposed movably in said ball chamber; an emitter light passage optically communicating with said ball chamber and said emitter; and a receiver light passage optically communicating with said ball chamber and said receiver.