Spoked rotor for an electric motor
AssigneeNidec Motor Corporation
InventorsKEITH I. HOEMANN, MICHAEL W. MAJOR, PHILIP S. JOHNSON, WILLIAM R. LEWIS, KENT A. SHEERAN
Life of this patent
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Abstract
A rotor is provided for use in an electric motor. The rotor includes a shaft assembly rotatable about an axis. The rotor also includes a plurality of magnets arranged arcuately about the shaft assembly, and a plurality of pole segments arranged arcuately about the shaft assembly. The pole segments alternate with the magnets, such that each of the magnets is at least in part interposed between adjacent pole segments. The pole segments interlock with the coupling element.
Claims23
A rotor for use in an electric motor, said rotor comprising:
- a shaft assembly rotatable about an axis and including a shaft, a coupling element, and a key interconnecting the shaft and the coupling element;
- a plurality of magnets arranged arcuately about the shaft assembly;
- and
- a plurality of pole segments arranged arcuately about the shaft assembly,
- said pole segments alternating with the magnets, such that each of said magnets is at least in part interposed between adjacent pole segments,
- said pole segments interlocking with the coupling element,
- said coupling element comprising a monolithic, homogenous body that extends circumferentially about the shaft, with the body projecting from the shaft to interlock with the pole segments.
A rotor for use in an electric motor, said rotor comprising:
- a shaft assembly rotatable about an axis and including a shaft and a metal coupling element;
- a plurality of magnets arranged arcuately about the shaft assembly;
- and
- a plurality of pole segments arranged arcuately about the shaft assembly,
- said pole segments alternating with the magnets, such that each of said magnets is at least in part interposed between adjacent pole segments,
- said pole segments interlocking with the coupling element.
Dependencies are inferred from the claim text.