Motor vehicle door lock or the like
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A motor vehicle door lock with a lock latch (4) and a detent pawl (5) which holds the lock latch (4) in the locked position (main catch (4a) and optionally a preliminary catch (4b)) and with a motorized opening drive (6), the motorized opening drive (6) having a drive motor (7) which is preferably an electric motor and has a step-down gear (8) which, on the driven side engages the detent pawl (5) of a detent pawl lever (9) or the like which moves the detent pawl (5) and lifts the detent pawl (5) when the drive motor (7) is triggered accordingly, so that the lock latch (4) is released—opening position. This releasing is optimized with regard to opening forces by a lifting spring (11) being provided which acts in the lifting direction of the detent pawl (5) in association with the step-down gear (8) or the detent pawl lever (9) or the like, so that the lifting spring (11) is tensioned when the opening drive (6) reverses from the open position into the locked position and so that the lifting spring (11) reinforces the opening motion and the lifting motion of the detent pawl (5) with its spring force when the opening drive (6) is advanced from the locked position into the open position.
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Citations
14 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- 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;
Specification