Patent ID: 8916814

Claim:
A sensor switch comprising: a housing including a receiving chamber which is defined by a top wall, a bottom wall and a multi-sided chamber surrounding wall formed between said top and bottom walls; a rolling member disposed rollably in said receiving chamber; and an optoelectronic device mounted in said housing and having a light emitter and a light receiver disposed outwardly of said chamber surrounding wall at two opposite positions; said chamber surrounding wall being formed with two light passage holes which are aligned respectively with said light emitter and said light receiver to permit a light path from said light emitter to said light receiver to extend therethrough; said rolling member being movable in said receiving chamber between a blocking position to block said light path and an unblocking position to unblock said light path; said bottom wall having a bottom inclined wall face that is inclined with respect to a plane extending substantially parallel to and below said light path from said light emitter to said light receiver and that forms an included angle of from −80 degrees to 80 degrees with respect to a first axis lying in said plane, said rolling member alternately blocking and unblocking said light path when moving to and fro on said bottom wall; and said chamber surrounding wall including first and second included wall faces which extend convergingly toward said bottom wall and which respectively form an included angle with respect to a second axis that extends in said plane and that is perpendicular to said first axis, and third inclined wall face that is inclined with respect to a third axis perpendicular to said first and second axes.