Device for actuating a parking lock
View Patent ↗A device is provided for actuation of a parking lock of a vehicle transmission that is automatically operated in particular, whereby the parking lock can be brought into a locked position by means of a spring mechanism and can be brought out of the locked position and into an unlocked position by means of an actuator, and an electrically operated actuator is provided, acting upon a locking latch arranged in the unlocked position of the parking lock with a locking slide in an engaged position so that the engaged position can be released such that the spring mechanism brings the parking lock into the locked position.
1. A device for actuating a parking lock of a vehicle transmission that is operated automatically, comprising:
a parking lock latch ( 2 );
a locking slide ( 4 );
a spring mechanism ( 3 ) engaged with locking slide ( 4 ) for urging locking slide ( 4 ) to contact parking lock latch ( 2 ) to engage and displace parking lock latch ( 2 ) so that parking lock latch ( 2 ) contacts a locking wheel of the transmission to lock the locking wheel;
a first electrically operated actuator ( 6 ) for urging locking slide ( 4 ) out of engagement with parking lock latch ( 2 );
a locking means ( 12 );
a spring ( 17 ) for urging locking means ( 12 ) to contact locking slide ( 4 ) so that locking means ( 12 ) is in a locked position with locking slide ( 4 ) when locking slide ( 4 ) is out of engagement with parking lock latch ( 2 ); and,
a second electrically operated actuator ( 13 ) or release lever ( 19 ) for urging locking means ( 12 ) out of engagement with locking slide ( 4 ) to release locking slide ( 4 ) out of the locked position with locking means ( 12 ).
2. The device recited in claim 1 wherein actuator ( 6 ) is provided for performing gear shift operations.
3. The device recited in claim 2 wherein a shift finger ( 8 ) of first actuator ( 6 ) can be moved along a shift channel for acting upon locking means ( 12 ) for releasing the engaged position.
4. The device recited in claim 2 wherein a shift finger ( 8 ) acts upon spring-loaded release lever ( 19 ) that in turn acts upon locking means ( 12 ) for releasing the engaged position.
5. The device recited in claim 1 wherein second actuator ( 13 ) is supplied with power by an electric power source ( 15 ) that is independent of a vehicle electric system and second actuator ( 13 ) is triggered by a controller ( 14 ) that is independent of a transmission controller ( 7 ).
6. The device recited in claim 5 wherein first actuator ( 6 ) is operatively arranged to be activated for releasing the engaged position by removing an authorization required for operation of the vehicle.
7. The device recited in claim 5 wherein second actuator ( 13 ) is operatively arranged to be activated for releasing the engaged position by removing an authorization required for operation of the vehicle.
8. The device recited in claim 1 wherein second actuator ( 13 ) is an electromagnet operatively arranged to release the locking means ( 12 ) from the engaged position.
9. The device recited in claim 1 wherein second actuator ( 13 ) is a cam plate ( 23 ) driven by an electric motor operatively arranged to release locking means ( 12 ) from the engaged position.