Device for sensing an obstacle in the opening range of a closure element of a motor vehicle

摘要

A device for sensing an obstacle in said opening range of an automotive closure element movable between an open position and and closed position, more particularly an electrically powered door window ( 20 ) or sunroof is provided with a weatherseal ( 30 ) sealing the window pane ( 20 ). The weatherseal ( 30 ) is made of an elastomeric material and secured to a frame ( 12 ) of the motor vehicle ( 10 ). The device comprises in addition a sensor for sensing an obstacle in the opening range of the closure element ( 20 ), the sensor comprising at least one electrical conductor ( 40 ) generating an electrical field (F) in the opening range of the closure element ( 20 ). The device achieves by simple ways and means an engineered orientation of the electrical field such that any interference by the closure element ( 20 ) to the capacitive change in the electrical field (F) is precluded by reason of conductive means ( 50 ) comprising a conductive surface ( 51 ) made of an electrically conductive material. The conductive means ( 50 ) are electrically insulated and shield the window pane ( 20 ) from the electrical field (F) generated by the electrical conductor ( 40 ).