Patent ID: 11865908
Assignee: HOFER POWERTRAIN INNOVATION GMBH
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 18:
19. A twin transmission for a duo electric machine powertrain with single-wheel drive, to be driven by two electric machines, each for driving a respective road wheel of a motor vehicle, the twin transmission comprising:
a first sub-transmission and a second sub-transmission;
one single middle stationary axle;
an input shaft configured for connection to each of the two electric machines, through which input shaft one of the first and second sub-transmission of the twin transmission is driven as a result of a drive power of said one of the two electric machines;
a spur gear intermediate bearing, on which at least one gear is located and supported;
the single middle stationary axle being configured for support of the spur gear intermediate bearing, the single middle stationary axle being fixed to a transmission case and being configured to stiffen the transmission case; and
an output shaft configured for being connected with a wheel half-axle,
wherein:
the input shaft and the output shaft are arranged for torque transfer by rotation through a tooth meshing of gears having a first gear center for the input shaft, a second gear center for the single middle stationary axle and a third gear center for the output shaft,
a transmission train from the input shaft, via the spur gear intermediate bearing, to the output shaft is configured with the first gear center, the second gear center, and the third gear center following a shape of an upside down letter V,
the input shaft and the output shaft are located on an uniform, geometrically defined plane, which is spanned by the third gear center and by an axis of the input shaft through the first gear center, wherein the plane is configured for being arranged parallel to a plane spanned by four road wheel carriers of the motor vehicle,
the spur gear intermediate bearing is a deflection stage for a torque, and
the spur gear intermediate bearing has at least one freewheel body and at least one gear that is mounted as an idler wheel, so that introduced transverse forces are at least partially compensated by diverting transverse forces on the idler wheel with respect to the single middle stationary axle.