Patent ID: 8482179

Claim:
A brushless motor comprising: a stator comprising a stator core having a plurality of pole tooth portions radially extending from a circular portion and coils wound around the plurality of tooth portions, respectively, wherein the coils are each composed as a single phase coil, and each of the plurality of pole tooth portions has a circumferentially extended tooth head portion at a tip portion thereof; and a rotor comprising a magnet having N poles and S poles disposed alternatively in a circumferential direction, wherein a number of the pole tooth portions is twice as large as a number of the magnetic poles of the magnet wherein each of the magnetic poles of the magnet opposes a pair of pole tooth portions of the stator core adjacent to each other, wherein the coils wound on the pair of the pole tooth portions and configuring a same phase are arranged in the same winding direction, and wherein adjacent pairs of the pole tooth portions, respectively opposing adjacent poles of the magnet, are disposed such that the coils of one of the adjacent pairs of the pole tooth portions are arranged in the opposite direction from that of the coils of the other adjacent pair of pole tooth portions.