US 12,034,358 B2
Electromotive transmission device
Martin Sagmeister, Passau (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Appl. No. 17/614,821
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
PCT Filed Jun. 2, 2020, PCT No. PCT/EP2020/065145
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/245085, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 10 2019 208 034.0 (DE), filed on Jun. 3, 2019.
Prior Publication US 2022/0239196 A1, Jul. 28, 2022
Int. Cl. H02K 9/19 (2006.01); H02K 5/20 (2006.01); H02K 7/00 (2006.01); F16H 57/04 (2010.01)
CPC H02K 9/19 (2013.01) [H02K 5/203 (2021.01); H02K 7/003 (2013.01); F16H 57/046 (2013.01); F16H 57/0476 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electromotive transmission device for a vehicle comprising:
an electric motor having a stator winding and a rotor,
a drive shaft being drivable in rotation by an input shaft of the electric motor via a transmission,
wherein the transmission is arranged coaxially with the input shaft, and the electric motor and the transmission are arranged in a housing which is delimited at least by a radial end wall on a transmission side, the transmission is a planetary transmission having a sun gear, an internal gear, and a plurality of planet gears which are rotatably mounted on an annular carrier component,
the stator winding is coolable by a cooling device,
the transmission has the annular carrier component which, abutting an inner side of the radial end wall, is connected to the end wall,
a radially circumferential annular channel, to which pressurized oil is supplied, is arranged in at least one of the end wall and the annular carrier component, having a plurality of spray outlets arranged distributed around the circumference of the annular channel or a radially circumferential slot-like spray outlet, which are arranged in the annular carrier component and start from the annular channel, and
the plurality of spray outlets are arranged such that spray jets of oil or a spray jet of oil are directed at least one of the stator winding and at the rotor winding.