Patent ID: 9484776
Filing Date: 2016-11-01
CPC Classification: H02K

Claim Text:
1. A rotor of a motor, the rotor comprising: a first rotor comprising a first rotor core and a plurality of first magnets that is coupled to an outer circumferential surface of the first rotor core; a second rotor comprising a second rotor core and a plurality of second magnets that is coupled to an outer circumferential surface of the second rotor core; and a third rotor stacked between the first rotor and the second rotor, and comprising a third rotor core and a plurality of third magnets that is coupled to an outer circumferential surface of the third rotor core, wherein magnetic fluxes of the plurality of third magnets are less than magnetic fluxes of the plurality of first magnets or second magnets; wherein the plurality of third magnets comprises materials having magnetic fluxes that are less than the magnetic fluxes of the plurality of first magnets or second magnets; and wherein the plurality of first magnets is skewed at a first skew angle with respect to the plurality of third magnets, and the plurality of second magnets is skewed at a second skew angle with respect to the plurality of third magnets.