Importance

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Abstract

An anti-clamping device for a vehicle door driven in opening and closing movements by a turnable shaft in turn driven by a transmission rod. The anti-clamping device comprises a telescopic element interposed in the transmission rod and including first and second telescopically engaged parts having retracted and extended positions. A control member is mounted on one of the parts and can be in the form of a projecting pin while spaced switches are mounted on the other of the parts. The pin projects between the switches to operate a selected one thereof depending on whether the parts are telescopically retracted or extended to reverse the direction of door movement. Thereby when an obstacle is present in the path of travel of the door, stress in the transmission rod will be accompanied by telescopic retraction or extension of the parts depending upon whether the door is in its opening or closing movement which produces closure of one of the switches to reverse the direction of door movement.

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First Claim