Patent ID: 6300700
Filing Date: 2001-10-09
Classification: H02K,Y02T

Abstract:
A motor rotating and driving by utilizing reluctance torque, comprising:a stator core having a plurality of teeth;a plurality of slots provided individually between each pair of said plurality of teeth;a winding applied on each of said plurality of teeth by a single turn; anda rotor incorporating a plurality of groups of permanent magnets, said plurality of groups of permanent magnets are included at a plurality of magnetic poles, respectively, said permanent magnets within each of said groups being formed in plural layers, each of said magnets including a middle portion and two end portions;wherein a distance between a surface of said permanent magnets that is adjacent to said plurality of teeth and a core outer circumference of said rotor is wider at said middle portions than at said end portions,the middle portion of said permanent magnets projects toward the center of the rotor, end portions of at least two of said layers within one of said groups being disposed adjacent to said core outer circumference.