Sitzsensor mit Schalter auf Folie und Widerstandselement

摘要

PROBLEM TO BE SOLVED: To provide a seating sensor preventing disconnection failure due to addition of a disconnection detecting resistive element while restraining deterioration of a disconnection detecting performance of the seating sensor.

SOLUTION: A disconnection detecting resistive element R2 and a current limiting resistive element R2 are arranged nearer a connector than all of film switches 17-20 on a seating face. This can improve a degree of freedom of a wiring such that a wiring to multiple film switches dispersed and arranged at each part of a seating face is, for example, branched into many parts. Because there is no need to arrange the disconnection detecting resistive element on the seating face, such problems are easily avoided that stress concentration due to seating on a connection between the disconnection detecting resistive element and a conductive wire is repeated and the connection is subjected to disconnection, and that a resistance value fluctuation is caused because of pressure on the disconnection detecting resistive element.

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