Safety device of power window in motor vehicles, has position sensor which detects angular position of drive motor from which opening-closing position of window glass is detected and controlled

摘要

A position sensor (20) with annular resistance track (25a) and conductor tracks (25b,25c) detect angular position of motor (9), from which opening-closing position of window glass is detected. Rotary board (23) with electrically conductive brushes (24a,24b), slides along resistance board of sensor. When motor is actuated, the sensor outputs resistance between electrodes provided along periphery radially.