MOTOR AND METHOD FOR USING AND MAKING THE SAME

摘要

A motor (100) and methods for making and using same. The motor (100) includes a rotor (200) including magnetic poles and a stator (300) comprising a stator core and a winding wound on the stator core. The stator core includes a plurality of stator teeth each including a tooth body (320) and a tooth end formed at an end of the tooth body (320), the tooth end comprising first and second arcuate regions (311A, 311B) facing the rotor (200). When the winding is not energized, a first magnetic coupling between said first arcuate region (311A) and a selected magnetic pole of said rotor (200) is greater than a second magnetic coupling between said second arcuate region (311B) and the selected magnetic pole, said first arcuate region (311A) being offset from a selected tooth body (32) in such a way as to enable movement of said rotor (200) to initiate in either of two opposite directions relative to said selected tooth body (320) upon energizing the winding.