Patent ID: 9353859
Filing Date: 2016-05-31
CPC Classification: F16H

Claim Text:
1. A park lock mechanism for a vehicle driveline component having a rotatable member, the park lock mechanism comprising: a housing; a dog ring that is adapted to be coupled to the rotatable member for common rotation, the dog ring being received in the housing and comprising a plurality of circumferentially spaced apart teeth; a pawl having a pawl tooth, the pawl being pivotably coupled to the housing for movement about a pivot axis between a first pivot position, in which the pawl tooth is disengaged from the teeth of the dog ring so as to not impede rotation of the dog ring relative to the housing, and a second pivot position in which the pawl tooth engages the teeth of the dog ring so as to impede rotation of the dog ring relative to the housing; a pawl spring that biases the pawl toward the first pivot position; a cam follower that is coupled to the pawl for movement therewith about the pivot axis; a cam that is rotatable about a movement axis that is transverse to the pivot axis between a first cam position and a second cam position, the cam contacting the cam follower and including a first cam portion and a second cam portion, wherein positioning of the cam in the first cam position orients the first cam portion on the cam follower to thereby position the pawl in the first pivot position, and wherein positioning of the cam in the second cam position orients the second cam portion on the cam follower to thereby position the pawl in the second pivot position; a first actuator assembly that is selectively operable to rotate the cam from the first cam position to the second cam position, the first actuator assembly having a first actuator and a lost motion coupling, the first actuator comprising a first output member that is rotatable about the movement axis, the lost motion coupling having a coupling input, which is mounted on the first output member, and a coupling output, the lost motion coupling being configured to decouple the first output member from the coupling output within a predetermined range of motion of the coupling output relative to the first output member, the cam being mounted on the coupling output; and a second actuator assembly that is selectively operable to rotate the cam between the first and second cam positions, the second actuator assembly having a second actuator and a loader, the second actuator having a second output member that is axially movable along the movement axis between a first loader position, in which the loader is disengaged from the cam, and a second loader position, in which the loader is engaged to the cam, the second actuator assembly being configured to drive the cam toward the second cam position when the loader is positioned in the second loader position; wherein operation of the second actuator assembly to rotate the cam from the first cam position to the second cam position does not cause corresponding motion of the first output member.