A system for cooling and lubricating a rotor shaft bearing of an electric machine is provided. In one example, the system includes a plurality of oil passages that extend axially through a rotor shaft and open into a sealed cavity near a housing interface between an electric machine housing and gearbox housing to route oil to the rotor shaft bearing for cooling and lubrication thereof.

An axial end of an output shaft facing toward an input shaft has a first hole that is concentric with the output shaft and that axially extends to a predetermined depth. An axial end of the input shaft facing toward the output shaft has a second hole that is concentric with the input shaft and that axially extends to a predetermined depth. A connection pin is inserted in the first hole and the second hole to connect the first hole and the second hole. When the output shaft and the input shaft axially approach each other, the connection pin interposed between the output shaft and the input shaft allows the output shaft and the input shaft to avoid coming into contact with each other.

A group transmission device includes a main transmission which has a main shaft, a countershaft and a spur gear pair which includes a first spur gear arranged coaxially and axially overlapping with the main shaft and a second spur gear arranged coaxially and axially overlapping with the countershaft. A range group has a first shaft non-rotationally connected to the main shaft, a second shaft non-rotationally connected to a transmission output shaft, a third shaft and a blocking switching unit. A first switching unit non-rotationally connects the third shaft to a housing. A second switching unit has an axially shiftable switching element and non-rotationally connects the third shaft to the first spur gear. The main shaft is coupled non-rotationally to a transmission input shaft. A third switching unit has an axially shiftable further switching element and non-rotationally connects the first spur gear to the first shaft of the range group.

A drive unit system for an axle of an electric vehicle comprises: a first drive unit comprising a first rotor inside a first stator; a first transmission for a first wheel of the axle, the first transmission having a first input shaft coupled to a first gear having a first helix angle; a second transmission for a second wheel of the axle, the second transmission having a second input shaft coupled to a second gear having a second helix angle opposite to the first helix angle; and a coupling connecting the first and second input shafts to each other.

The present invention relates to a torque transmission assembly for a motor vehicle comprising a two-stage spur gear, having an input shaft for introducing the torque of a drive unit and an output shaft arranged parallel to the input shaft, and comprising a dual clutch following the spur gear in the torque flow for selectively transmitting the torque from a first and second stage of the spur gear to an output-side torque transmission member of the torque transmission assembly, wherein the dual clutch has a clutch output hub, on which the torque transmission member is arranged in a rotationally fixed manner, and the clutch output hub and the output shaft are supported against one another via at least one radial bearing.

The disclosure relates to a transmission system for a vehicle comprising a first gear assembly, a second gear assembly, an intermediate unit comprising a first sprocket element, a second sprocket element, a coupling element, and an output gear assembly with an output shaft. The first sprocket element is connectable to an input shaft of a traction motor of the vehicle in an axial direction of the first sprocket element to receive an input torque and the first gear assembly is connectable to the second sprocket element coaxially to convert the input torque to a first output torque. The second sprocket element is arranged radially to the first sprocket element and in communication with the first sprocket element through the coupling element to receive the input torque and the second gear assembly is connectable to the first sprocket element coaxially to convert the input torque to a second output torque.

The invention relates to an actuating drive and to a guiding element for use in an actuating drive. The actuating drive according to the invention includes an electric motor, comprising a rotor rotatably supported on a rotor axle and an output gear mechanically coupled to the rotor. The actuating drive further includes a guiding element comprising a guide configured to radially guide the output gear relative to an output axis. The guiding element also includes a first axle receiver configured to receive a distal end of the rotor axle. The guiding element also includes a second axle receiver configured to receive a central portion of the transmission axle.

A power transmission device includes a housing having a first chamber and a second chamber, a left gear unit accommodated in the first chamber and having a first rotation shaft, and a right gear unit accommodated in the second chamber and having a second rotation shaft located coaxially with the first rotation shaft. The housing has a center housing located between the first chamber and the second chamber. The center housing has a flat plate portion, a first bearing support portion supporting a first bearing located at a first end of the first rotation shaft, and a second bearing support portion supporting a second bearing located at a first end of the second rotation shaft. The flat plate portion is provided with a gap in at least a part of an annular region located between the first bearing support portion and the second bearing support portion.

In a drive device, a first flow path of a fluid connects a gear accommodation portion and an inlet of a pump. A second flow path connects an outlet of the pump and one end of a third flow path via a cooler. The third flow path is inside a partition wall of a housing and intersects a rotation axis of a first shaft. A fourth flow path connects another end of the third flow path and one end of a fifth flow path. The fifth flow path is inside a gear side lid of the housing. Another end of the fifth flow path is connected to one end of a second shaft in an axial direction. One end of a sixth flow path is connected to another end of the third flow path. Another end of the sixth flow path is inside a housing tubular portion.

In a vehicular power transmitting system, a fixing portion of a brake retaining portion receives a reaction force from a reverse drive brake and is located in a portion of a circumference of the brake retaining portion, which is outside a predetermined circumferential portion close to the shifting shaft support portion and is defined by a pair of lines tangent to a circumference of the shifting shaft and parallel to a straight line connecting first and second axes and located on opposite sides of the straight line, as seen in a plane normal to the first axis, where a forward/reverse switching device including the reverse drive brake is disposed on the first axis, and a gear type transmission is disposed on the first axis and the second axis and an outer housing wall and a partition wall radially inwardly extending from the outer housing wall are provided.