Wheel device with integrated electric motor for a motor vehicle
AssigneeFerrari S.P.A.
InventorIsabel Ramirez Ruiz
Life of this patent
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Abstract
A wheel device for a motor vehicle includes a rim having an axis and an outer surface defining a seat for mounting a tire, a wheel hub arranged about the axis inside the rim and suitable to be coupled to a suspension of the motor vehicle, an electric motor comprising a stator arranged coaxially with the wheel hub in a fixed position with respect to the wheel hub and a rotor configured to magnetically interact with the stator, a radial bearing supporting the rotor rotatably about said axis with respect to the wheel and to the stator, wherein the rim is fitted on the rotor with interference, whereby the rim is fixed with respect to the rotor.
Claims12
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).
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), wherein the radial bearing (13) comprises an inner ring (21) arranged about said axis (H) and fixed with respect to the wheel hub (9),
- 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), and
- a brake caliper device (26) carried by the wheel hub (9) and having at least one portion (28) extending within the inner ring (21) of the radial bearing (13).
Dependencies are inferred from the claim text.