Back to results
US 7,548,005 B2Granted
Electric motor having improved relative phase control
AssigneeHonda Motor Co.Ltd.
InventorsMasaaki Kaizuka, Hiromitsu Sato, Hirofumi Atarashi, Shoei Abe
Life of this patent
Estimating the term…
Abstract
This electric motor includes first permanent magnets secured integrally to an outer periphery side rotor and second permanent magnets secured integrally to an inner periphery side rotor. The first permanent magnets and the second permanent magnets are arranged so as to offset the relative torque produced between the outer periphery side rotor and the inner periphery side rotor based on the magnetic flux of the inner peripheral permanent magnets and the outer peripheral permanent magnets.
Claims12
An electric motor comprising:
- a rotating device capable of changing a relative phase between an inner periphery side rotor having a first peripheral permanent magnets arranged along the circumferential direction and an outer periphery side rotor having a second peripheral permanent magnets arranged along the circumferential direction, the inner periphery side rotor and the outer periphery side rotor being concentric, by rotating one or the other about the rotation axis;
- third permanent magnets secured integrally to the outer periphery side rotor;
- and
- fourth permanent magnets secured integrally to the inner periphery side rotor, wherein
- the third permanent magnets and the fourth permanent magnets are arranged so as to offset a relative torque produced between the outer periphery side rotor and the inner periphery side rotor based on a magnetic flux of the first peripheral permanent magnets and the second peripheral permanent magnets.
2 more elements
Dependencies are inferred from the claim text.