Patent ID: 7569962

Claim:
An A-phase brushless motor, where A is an integer greater than or equal to 2, comprising: a stator having q stator poles, where q is an integer greater than or equal to A, the stator poles forming S stator pole sets each consisting of A stator poles each of which corresponds to one of A phases, where S is an integer equal to (q/A); and a rotor having p rotor poles, where p is an integer greater than or equal to 2, and being so arranged that the rotor poles face the stator poles, wherein, p≧q, the stator poles are arranged in a circumferential direction of the motor such that a difference in electrical angular position between any adjacent two of the A stator poles in each of the S stator pole sets is equal to (360°/A), and each of the stator poles has an angular width that corresponds to an electrical angular width of 180°.