Patent ID: 6236135
Filing Date: 2001-05-22
Classification: H02K

Abstract:
A toroidal core type actuator, having two phase separators, comprising a stator and a rotor, said stator having a winding wound on an insulating portion made of a non-magnetic resin applied to a hollow cylindrical core comprising a soft magnetic material, said rotor including a permanent magnet having a north pole and a south pole positioned along the circumferential direction thereof and being rotatably arranged in said core of said stator via a minute air gap, whereinthe number of said phase separators is equal to the number of said poles;said two phase separators comprise a non-magnetic insulating material and are arranged on a peripheral surface of said hollow cylindrical core so as to be separated from each other by approximately 180.degree.; andsaid winding is wound on winding regions separated from each other by said phase separators.