| CPC H02K 1/276 (2013.01) [H02K 21/14 (2013.01)] | 2 Claims |
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1. A motor comprising a rotor and a stator disposed around the rotor, wherein
the rotor includes:
a plurality of pairs of magnet slots evenly spaced in a circumferential direction of the rotor, each pair of magnet slots being arranged in a V-shape opening outward in a radial direction of the rotor;
a plurality of pairs of main magnets housed in the plurality of pairs of magnet slots with their polarities alternately reversed in the circumferential direction so that a north pole and a south pole alternately face outward in the radial direction; and
a plurality of auxiliary magnets including an outer magnet housed in an outer end in the circumferential direction in each of the pairs of magnet slots, and
both of a first condition and a second condition are satisfied, wherein
the first condition is that the main magnets are sintered magnets and the auxiliary magnets are bonded magnets,
the second condition is that magnetization directions of the main magnet and the outer magnet housed in a same one of the magnet slots intersect outside of the rotor in the radial direction so as to define an acute angle,
the plurality of auxiliary magnets include a plurality of inner magnets housed in inner ends in the circumferential direction in each of the pairs of magnet slots, and
the main magnet and the inner magnet housed in a same one of the magnet slots are magnetized in a same direction.
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