Patent ID: 6371536
Filing Date: 2002-04-16
Classification: E05B,Y10T

Abstract:
Motor vehicle door lock comprising a lock latch and a detent pawl which holds the lock latch in a locked position and a motorized opening drive having an electric drive motor and a step-down gear which, on the driven side causes the detent pawl to be lifted when the drive motor is triggered for releasing the lock latch into an open position; wherein a lifting spring is provided which acts in a lifting direction of the detent pawl, a tension force being applied to the lifting spring when the opening drive reverses for moving the lock latch from the open position into the locked position; wherein the tension force applied to the lifting spring is released when the opening drive is advanced in an opening motion for moving the locking latch from the locked position into the open position, causing said lifting spring to reinforce said opening motion and lifting of the detent pawl with a spring force applied thereby; wherein a retaining element is provided which acts as a stop for the tensioned lifting spring in the locked position; and wherein the retaining element is lifted directly after starting the advance motion of the opening drive by means of the step-down gear for releasing the lifting spring.