US 12,071,019 B2
Electric axle drive unit with integrated brake device with axially movable brake disc element
Doris Maria Wimmer, Ottenhofen (DE); Simon Ortmann, Baden-Baden (DE); Philippe Wagner, Souffelweyersheim (FR); and Aurelien Grauss, Mommenheim (FR)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 17/422,906
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Dec. 17, 2019, PCT No. PCT/DE2019/101098
§ 371(c)(1), (2) Date Jul. 14, 2021,
PCT Pub. No. WO2020/147881, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 102019100738.0 (DE), filed on Jan. 14, 2019.
Prior Publication US 2022/0161649 A1, May 26, 2022
Int. Cl. B60K 7/00 (2006.01); B60K 1/00 (2006.01); F16D 65/18 (2006.01); F16D 121/02 (2012.01); F16D 125/40 (2012.01)
CPC B60K 7/0007 (2013.01) [F16D 65/186 (2013.01); B60K 2001/001 (2013.01); B60K 2007/0092 (2013.01); F16D 2121/02 (2013.01); F16D 2125/40 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric axle drive unit for a motor vehicle, the electric axle drive unit comprising:
an electric motor having, a stator fixedly received in a housing and a rotor rotatably mounted relative to the stator, the rotor being rotationally coupled or rotationally couplable to a wheel hub;
a brake device received in or on the housing that is operatively connected to the wheel hub, such that the brake device is open on a first axial end and closed on a second axial end, the brake device including a first brake component fixedly supported on the housing, a second brake component rotationally coupled to the wheel hub, the second brake component being configured to be frictionally connected to the first brake component;
an actuation unit configured to apply a braking force that interconnects the brake components, the actuation unit is attached to the housing; and
at least one of the brake components includes a support part and a brake disc element which is rotationally fixed to the support part and is displaceably received in an axial direction of a rotational axis of the wheel hub relative to the support part, wherein the actuation unit includes an actuator housing and an actuator displaceably received in the actuator housing, and at least one of the actuator housing or the actuator is arranged to be radially inside the brake disc elements.