US 12,241,509 B2
Drive unit for a vehicle
Janek Kraeuter, Ludwigsburg (DE); Timo Kiekbusch, Ludwigsburg (DE); Tobias Schlittenbauer, Tamm (DE); Witold Techman, Bietigheim-Bissingen (DE); and Zhengyu Liu, Stuttgart (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/928,961
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed May 4, 2021, PCT No. PCT/EP2021/061686
§ 371(c)(1), (2) Date Dec. 1, 2022,
PCT Pub. No. WO2021/244814, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 10 2020 206 851.8 (DE), filed on Jun. 2, 2020.
Prior Publication US 2023/0235792 A1, Jul. 27, 2023
Int. Cl. F16D 1/10 (2006.01); F16C 33/66 (2006.01)
CPC F16D 1/10 (2013.01) [F16C 33/6681 (2013.01); F16C 2361/61 (2013.01); F16D 2001/103 (2013.01); F16D 2300/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A drive unit (10) for a vehicle, the drive unit comprising an electric machine (12) having a rotor shaft (14) and a transmission (16) having a transmission shaft (18),
wherein the rotor shaft (14) and the transmission shaft (18) are interlocking and coupled by an interlocking toothing (44), wherein a lubricant channel (46) is formed in the transmission shaft (18), which lubricant channel feeds into an inner space (48) of the rotor shaft (14) at an end facing the rotor shaft (14) in order to provide lubricant for the interlocking toothing (44), wherein the rotor shaft (14) has an end side (50) at an axial end facing the transmission shaft (18), on which end side one or more openings (52) are formed, extending from an inner circumference (54) of the rotor shaft (14) bordering the inner space (48) to an outer circumference (56) thereof, such that the lubricant channel (46) is fluidically connected to the openings (52) via the inner space (48) and the interlocking toothing (44).