Patent ID: 7380844

Claim:
A lock for doors or hatches of vehicles, with a stationary ( 33 ) rotary latch ( 30 ), into which a closing part ( 35 ) travels when the door or hatch is closed manually, the rotary latch ( 30 ) thus being pivoted against its spring-loading ( 36 ) initially out of an open position ( 30 . 0 ) into a prelatching position ( 30 . 1 ); with a stationary, rotatably supported ( 43 ) pawl ( 40 ), which is spring-loaded ( 42 ) toward the rotary latch ( 30 ) and which, when the rotary latch is in the prelatching position ( 30 . 1 ), drops into a pre-catch ( 31 ) provided on the rotary latch ( 30 ); with a reversible motor, which acts by way of at least one cam ( 11 , 21 ) both on a motorized closing aid and on a motorized opening aid; where, when the motor rotates in one direction ( 13 ), the opening aid exerts no effect but the closing aid is active, pivoting the rotary latch ( 30 ) against its spring-loading ( 36 ) out of the prelatching position ( 30 . 1 ) into an overstroke position ( 30 . 3 ), the rotary latch ( 30 ) carrying the closing part ( 35 ) along with it until the spring-loaded pawl ( 40 ) drops behind the main catch ( 32 ) of the rotary latch ( 30 ); in the overstroke position ( 30 . 3 ), the closing aid releases the rotary latch ( 30 ), as a result of which the spring-loading ( 36 ) moves the rotary latch ( 30 ) back until the pawl ( 40 ) rests against the main catch ( 32 ) of the rotary latch ( 30 ) and determines the main latching position ( 30 . 2 ) of the rotary latch ( 30 ); and when the motor rotates in the opposite direction ( 23 ), the closing aid exerts no effect but the opening aid is active, lifting the pawl ( 40 ) against its spring-loading ( 42 ) out of the main catch ( 32 ) and holding it until the rotary latch ( 30 ) pivots back under the action of its spring-loading ( 36 ) into the open position ( 30 . 0 ) and releases the closing part ( 35 ), wherein the closing aid consists of a closing lever ( 10 ) rotatably supported eccentrically ( 15 ) on the rotary latch ( 30 ), this lever being held in a middle position ( 10 . 0 ) by an impulse spring ( 16 ) and/or by control surfaces; where the closing lever ( 10 ), when in its middle position ( 10 . 0 ), projects into the rotational path of the cam ( 11 ) only in the prelatching position ( 30 . 1 ) and is carried along by the cam ( 11 ) upon rotation in the one direction ( 13 ); where the opening aid consists of a stationary, rotatably supported ( 43 ) driver ( 50 ) and an opening lever ( 20 ), rotatably supported ( 22 ) on the driver ( 50 ), the lever being held in a middle position ( 20 . 0 ) by an impulse spring ( 26 ) and/or by control surfaces; where the opening lever ( 20 ), when in the middle position ( 20 . 0 ), projects into the rotational path of the cam ( 21 ) in the main latching position ( 30 . 2 ) and is carried along by the cam ( 21 ) upon rotation in the opposite direction ( 23 ); and where the carried-along opening lever ( 20 ) pushes the pawl ( 40 ) away from the rotary latch ( 30 ) by way of the driver ( 50 ).