Patent ID: 6481556
Filing Date: 2002-11-19
Classification: F16H

Abstract:
A parking lock for an automatic transmission of a motor vehicle, comprising:an actuating signal, triggered by a driver via a hydraulic actuating device (7), for one of blocking and releasing the automatic transmission; a parking pawl (16) movable via a rotatable fixture (1); the fixture (1) comprising, in combination with the hydraulic actuating device (7),: a first disc (2); a second disc (3); and a detent unit (14); the hydraulic actuating device comprising: a piston (6); a cylinder (8); and one recoil spring (9); and the parking pawl (16) being one of movable manually from a vehicle space, via an operating connection, and hydraulically movable via the actuating device (7); wherein the parking pawl (16) is moved to one of: (a) a disengaged state by a rotation in a first direction of the fixture (1) around a central axis (20), by a first pressurized shifting of the hydraulic actuating device (7), and, at the same time, bringing the detent unit (14) to an open state; and (b) is moved to an engaged state by a rotation in a second opposite direction of the fixture (1) around the central axis (20), by a second pressureless shifting of the hydraulic actuating device (7).