Patent ID: 9735637
Date: 2017-08-15
CPC Classifications: H02K

Claim:
1. A magnet-type rotating electric machine, comprising: a rotor comprising a rotary body having an inner circumferential wall surface, the rotary body rotating with a shaft, and main magnets and auxiliary magnets alternately arranged along a circumferential direction of the inner circumferential wall surface; and a stator provided on an inner diameter side of the rotor, for forming a magnetic circuit in cooperation with the rotor, concave portions formed between the adjacent main magnets on one of an outer circumferential side and an inner circumferential side thereof, wherein: each of the main magnets is magnetized to an N-pole and an S-pole in a radial direction, whereas the main magnets are arranged so that the main magnets adjacent to each other through corresponding one of the auxiliary magnets therebetween are magnetized to have opposite polarity patterns; each of the auxiliary magnets is magnetized to the N-pole and the S-pole in the circumferential direction, whereas the auxiliary magnets are arranged so that the auxiliary magnets adjacent to each other through corresponding one of the main magnets therebetween are magnetized to have opposite polarity patterns, the main magnets are held in close contact with the inner circumferential wall surface of the rotary body, whereas each of the auxiliary magnets is spaced apart from the inner circumferential wall surface of the rotary body to provide an air gap therebetween, and the auxiliary magnets are respectively provided in the concave portions.