| CPC H02K 1/28 (2013.01) [H02K 1/278 (2013.01); H02K 7/003 (2013.01); H02K 2213/03 (2013.01)] | 17 Claims |
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1. A rotor comprising:
a rotor core; and
a plurality of magnets disposed on an outer circumferential surface of the rotor core to be spaced apart from each other,
wherein the rotor core includes a body and a protruding portion obliquely protruding inward from an inner circumferential surface of the body at a predetermined angle, and
a predetermined gap (G1) is formed between the inner circumferential surface of the body and an end portion of the protruding portion,
wherein the protruding portion includes a plurality of protrusions including a first protrusion and a second protrusion that obliquely protrude from the inner circumferential surface of the body at predetermined angles,
wherein an end portion of the first protrusion and an end portion of the second protrusion protrude in directions to be spaced apart from each other in a circumferential direction,
wherein the first protrusion is closer to the second protrusion than it is to any other protrusion of the plurality of protrusions, and the second protrusion is closer to the first protrusion than it is to any other protrusion of the plurality of protrusions,
wherein the first protrusion and the second protrusion both overlap, in a radial direction, a first magnet of the plurality of magnets, and
wherein the first protrusion and the second protrusion are symmetrically disposed on the basis of a virtual line connecting a center of the rotor core and a center of the first magnet.
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