Patent ID: 9385581
Filing Date: 2016-07-05
CPC Classification: H02K

Claim Text:
1. A magnetic gear mechanism comprising two rotors each including permanent magnets having a plurality of poles; and pole shoe members formed of a first soft magnetic material, having a plurality of poles, and arranged between the rotors, wherein rotation is transmitted by modulating magnetic fluxes having respective ratios of magnet pole numbers by pole shoe members thereof, wherein the rotors each are formed of a laminated member of a second soft magnetic material, and include the permanent magnets arranged in an interior of the second soft magnetic material, a number of divisions of the magnets is differentiated between magnets in a first rotor of the two rotors having a larger number of poles and magnets in a second rotor of the two rotors having a smaller number of poles, and the number of divisions of the magnets in the first rotor having the larger number of poles is larger, and the permanent magnets in the first rotor having the larger number of poles are arranged so as not to be exposed to a surface of the first rotor facing the pole shoe members that modulate the magnetic fluxes, wherein a portion of the second soft magnetic material is disposed between the permanent magnets and the surface of the first rotor facing the pole shoe members, and are divided into a plurality of pieces in the axial direction.