Axial gap type brushless motor

摘要

Disclosed is a brushless motor (1A) which is an axial gap type brushless motor (1A) wherein stators (3A, 4A) comprising a coil (41) and a rotor (2) comprising a permanent magnet (23) are arranged with a gap therebetween in the axial direction. The coil (41) is a band-like wire which is spirally wound such that the width direction of the band-like wire generally coincides with the direction of the magnetic flux that is generated by the permanent magnet (23) of the rotor (2). Consequently, the axial gap type brushless motor (1A) having the above-described structure can be further reduced in eddy current loss in comparison to conventional brushless motors.

主权项

1. An axial gap type brushless motor, comprising:
a stator that includes a coil; and a rotor that includes a permanent magnet, the rotor being spaced apart from the stator in an axial direction, wherein the coil is formed of a band-like wire that is spirally wound such that a width direction of the band-like wire generally coincides with a direction of a magnetic flux generated by the permanent magnet of the rotor, wherein a plurality of the permanent magnets are arranged in a peripheral direction, and wherein the rotor includes conductors that extend in a radial direction between the permanent magnets arranged in the peripheral direction, and short-circuiting rings that short-circuit ends of the conductors on inner and outer peripheral sides of the rotor.