US 5,409,273 AGranted

Locking-aid device for a lock

AssigneeMercedes-Benz AG

InventorsKlaus-Peter Claar, Martin Lindmayer, Jan Schilling, Andreas Schmidt

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Abstract

A locking-aid device is disclosed for a lock, especially for a vehicle door lock or flap lock, in which a pneumatic single-acting locking-aid drive is provided for displacing an abutment for a rotary latch out of a catch position into a locking position, in which the abutment is secured positively by means of a detent pawl. According to the invention the detent pawl can be lifted out, during the opening of the lock, independently of a movement of the locking-aid drive by means of an operative connection. This can be brought about purely mechanically or by means of a separate drive for lifting out the detent pawl during the opening of the lock, so that the abutment can always jump into its catch position immediately during or after the opening of the lock and thus also allows a successive multiple activation of the locking-aid assistance.

Claims15

Dependent claims

Locking-aid device for a lock, especially for a vehicle door lock or flap lock, which has an abutment movable to and fro between a catch position assumed automatically during the opening of the lock and a locking position, especially a locking wedge having a closed locking lug, for a movable lock latch, comprising:

a locking-aid drive which is movable out of a position of rest during the locking of the opened lock for the purpose of bringing the abutment out of the catch position into the locking position,
a first detent pawl for fixing the abutment in its locking position after the return of the locking-aid drive uncouplable from the abutment into its position of rest,
a drive device for automatically lifting out the first detent pawl, during the opening of the lock, by means of an operative connection,
and a drive device control mechanism for actuating the drive device for lifting out the first detent pawl by means of the operative connection independently of the locking-aid drive remaining in the position of rest, whereby the abutment can be moved automatically into its catch position immediately whenever the lock is opened, without the activation of the locking-aid drive.

1 more element

Dependencies are inferred from the claim text.