METHOD FOR PREVENTING JAMMING OF FOREIGN MATTER, AND ANTI-JAMMING SYSTEM

摘要

The invention relates to a method for preventing jamming of foreign matter (16) in an opening (17) which can be closed by a motor-driven device (13), like for instance a car door window, sliding roof, or similar. In this method, when a detector beam (7) detects foreign matter (16) in the opening (17), the motor-driven device (13) is switched off or into reverse. The inventive method is characterized in that the direction of the detector beam (7) changes continuously, so that the detector beam (7) travels over the closing edge (18) of the opening (17) which is to be closed (17). The invention also relates to an anti-jamming system which functions in accordance with the inventive method. The anti-jamming system is characterized in that it has a deflecting element (1, 5) for deflecting the detector beam (7), which is used to continuously change the direction of the detector beam (7).