US 12,485,742 B2
Wheel device with integrated electric motor for a motor vehicle
Isabel Ramirez Ruiz, Modena (IT)
Assigned to FERRARI S.P.A., Modena (IT)
Filed by FERRARI S.P.A., Modena (IT)
Filed on Apr. 21, 2023, as Appl. No. 18/304,392.
Claims priority of application No. 102022000008270 (IT), filed on Apr. 27, 2022.
Prior Publication US 2023/0347730 A1, Nov. 2, 2023
Int. Cl. B60K 7/00 (2006.01)
CPC B60K 7/0007 (2013.01) [B60K 2007/0038 (2013.01); B60K 2007/0092 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A wheel device (4) for a motor vehicle (1), the device (4) comprising:
a rim (5) having an axis (H) and an outer surface (6) defining a seat (7) for mounting a tire (8),
a wheel hub (9) arranged about the axis (H) inside the rim (5) and suitable for being coupled to a suspension of the motor vehicle (1),
an electric motor (10) comprising a stator (11) arranged coaxially with the wheel hub (9) in a fixed position relative to the wheel hub (9) and a rotor (12) configured to magnetically interact with the stator (11),
a radial bearing (13) rotatably supporting the rotor (12) about said axis (H) with respect to the wheel hub (9) and stator (11),
characterized in that the rim (5) is fitted on the rotor (12) with interference, whereby the rim (5) is fixed with respect to the rotor (12), wherein the radial bearing (13) comprises an outer ring (22) arranged about said axis (H) and fixed with respect to the rotor (12).