US 11,754,180 B2
Parking lock system for a motor vehicle
Jan Hasenkamp, Allmersbach im Tal (DE)
Assigned to MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Appl. No. 17/786,595
Filed by MERCEDES-BENZ GROUP AG, Stuttgart (DE)
PCT Filed Dec. 9, 2020, PCT No. PCT/EP2020/085314
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/122233, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10 2019 008 811.5 (DE), filed on Dec. 18, 2019.
Prior Publication US 2023/0029244 A1, Jan. 26, 2023
Int. Cl. F16H 63/34 (2006.01); F16H 57/00 (2012.01)
CPC F16H 63/3425 (2013.01) [F16H 63/3483 (2013.01); F16H 2057/0056 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A parking lock system for a motor vehicle, the parking lock system comprising:
a parking lock housing configured for mounting on a transmission housing;
a pawl mounted on the parking lock housing so as to be rotatable about an axis of rotation;
a switching rod mounted on the parking lock housing so as to be slidable in an actuation direction;
an actuation element mounted on the switching rod, wherein the axis of rotation is arranged parallel to the actuation direction,
wherein the parking lock housing has a plate, wherein a planar region of the plate is arranged perpendicularly to the actuation direction and wherein a pawl bolt is mounted in the plate to bear the pawl,
wherein, viewed in the actuation direction, the pawl is arranged behind the plate,
wherein the parking lock housing has an actuation housing configured as one part and as a casting with the plate,
wherein the actuation housing has a cylinder bore of a hydraulic piston cylinder unit, wherein the cylinder bore is arranged coaxially to the switching rod,
wherein the hydraulic piston cylinder unit is configured to displace the switching rod in the actuation direction,
wherein a piston of the piston cylinder unit is arranged within the cylinder bore,
wherein a latch lever is arranged with respect to the actuation direction in a region of the hydraulic piston cylinder unit, wherein the latch lever is pivotably mounted on the actuation housing,
wherein a pivot plane of the latch lever is arranged perpendicularly to the axis of rotation, and
wherein the pawl has a pawl tooth, a bearing point, and an actuation recess, wherein a first connecting line through the bearing point and the actuation recess and a second connecting line through the bearing point and the pawl tooth are at an angle of at least 30°.