Patent ID: 6420693
Filing Date: 2002-07-16
Classification: E05F,E05Y

Abstract:
A foreign object insertion detector device for detecting the insertion of a foreign object between a car window frame and a windowpane when the car window is closed by the windowpane, said foreign object insertion detector device comprising:a weather strip disposed in said car window frame and including, in an inner peripheral portion of the weather strip opposed to a closing-direction downstream edge of said windowpane, a light transmitting cavity portion extending in the longitudinal direction of said inner peripheral portion and communicating with the outside; pressing means which is disposed at least on one of an obliquely downward car exterior side and obliquely downward car interior side of said light transmitting cavity portion of said weather strip, and which, on receiving a pressing force, resulting from a force of a closing windowpane on the inserted foreign object, that is transmitted in an obliquely downward direction with respect to the opening and closing direction of said windowpane through said weather strip to deform said light transmitting cavity portion by concentrating the pressing force toward the light transmitting cavity portion; light emitting means for emitting a given light into said light transmitting cavity portion from one end of said light transmitting cavity portion; light receiving means for receiving said light emitted by said light emitting means, reflected by an inner peripheral surface of said light transmitting cavity portion and transmitted to the other end of said light transmitting cavity portion; and judging means for monitoring the quantity of the light received by said light receiving means, and for judging the presence of the insertion of said foreign object on detecting a decrease in the quantity of said received light caused when said weather strip is elastically deformed by said pressing force and said light transmitting cavity portion is deformed, wherein the pressing means comprises a cavity formed on at least one of the obliquely downward car interior side or exterior side of said light transmitting cavity portion in said weather strip in such a manner that it extends in the longitudinal direction of said light transmitting cavity portion and a projection provided on the at least one obliquely downward car interior side or exterior side inner peripheral surface of said cavity in such a manner that it extends in the longitudinal direction of said cavity, said projection being capable of deforming said light transmitting cavity.