CPC F16H 63/3483 (2013.01) [B60T 1/005 (2013.01); F16H 61/12 (2013.01); F16H 63/3433 (2013.01); F16H 63/48 (2013.01); F16H 2061/1224 (2013.01); F16H 2061/1288 (2013.01)] | 20 Claims |
1. A device (1) for actuating a parking lock device (2) of an automatic transmission, comprising:
a piston (3) guided in a cylinder (5) and hydraulically displaceable counter to a spring force of an actuation spring (4);
a blocking device (15) comprising radially displaceable blocking elements (26), the piston (3) bringable into an operative connection with a parking pawl (13), the piston (3) form-lockingly fixable by the radially displaceable blocking elements (26) of the blocking device (15) both in a first position corresponding to an engaged operating condition of the parking lock device (2) and in a second position corresponding to a disengaged operating condition of the parking lock device (2); and
an actuation element (17), the blocking elements (26) radially displaceable by the actuation element (17),
wherein a radial displacement path of the blocking elements (26) in the first position of the piston (3) and a corresponding operating condition of the actuation element (17) deviate from the radial displacement path of the blocking elements (26) in the second position of the piston (3) and the corresponding operating condition of the actuation element (17),
wherein the blocking elements (26) are configured as balls that are axially and radially guided in recesses (34) of a guide sleeve (35) operatively connected to the cylinder (5).
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