Vehicle door lock system has permanent magnet, air coil or electromagnetic coil that can neutralize permanent magnetic force, sensor or switch system or preferably displacement sensor for measuring gap between door and frame and controller

摘要

The system has at least one permanent magnet (1) in the door frame and/or door (4) so the door is pulled to when within a minimal distance of the frame, an air coil (2) or electromagnetic coil wound around the permanent magnet or close to it that can more or less neutralize the permanent magnetic force, a sensor or switch system or preferably displacement sensor for measuring the gap between the door and frame and a controller.