Wheel Motor with Rotating Stator
AssigneeEmpire Technology Development LLC
InventorVelayutham Kadal Amutham
Life of this patent
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Abstract
An in-wheel motor having an inner stationary portion (the stator), and an outer rotating portion (the rotor) that rotates around the stator and drives a wheel directly attached to the rotor. The stator may comprise an inner support structure around which a plurality of magnets having windings are disposed in a circumferential fashion. The rotor circumferentially surrounds the stator, and includes permanent magnets placed at an interval along a surface of the rotor. An intermediate layer between the rotor and the stator is comprised of a bearing that allows movement of the rotor relative to the stator. By attaching a wheel directly to the outer surface of the rotor, a compact and efficient wheel-mounted electrical motor may be provided.
Claims20
An in-wheel motor comprising:
- an inner stationary stator including a plurality of magnets comprised of windings, the magnets arranged at an outer circumference thereof;
- an outer rotor surrounding the inner stator and including a plurality of rotor magnets arranged circumferentially thereon;
- and
- a bearing layer positioned between the stator and the rotor for allowing rotational movement of the rotor relative to the stator, and for distributing forces applied to the outer rotor.
An in-wheel motor comprising:
- an inner stationary stator including a plurality of magnets comprised of windings, the magnets arranged at an outer circumference thereof, and an inner support ring attached to the magnets and extending in a direction parallel to a central axis of the in-wheel motor away from the magnets;
- an outer rotor surrounding the inner stator and including a plurality of magnets arranged circumferentially thereon, and a rotor projection portion extending in the direction parallel to the central axis of the in-wheel motor so as to surround inner support ring;
- and
- a bearing layer positioned radially between the inner support ring of the stator and the rotor projection portion allowing rotational movement of the rotor relative to the stator, and for distributing forces applied to the outer rotor.
Dependencies are inferred from the claim text.