| 摘要 |
PROBLEM TO BE SOLVED: To provide a precision motor of which small size and high output are realized, with less cogging torques and torque ripples. SOLUTION: A flexible rare earth magnet 1 of multi-pole magnetization is bent and attached on the inner peripheral surface of a cup-like frame 2 which is a back yoke, constituting a field assembly 3. A bearing 5 is arranged at the center of a stator 4, where six salient poles of an iron core 4a are wound concentrated with a coil 4b, with a shaft 6 fixed to the frame 2 supported freely rotating. A drive circuit is mounted on a drive circuit board 7, to which the coil 4b of the stator (armature) 4 is connected, with electric power supplied to a feed part 8. The jointing part of the flexible rare earth magnet 1 is made to align with the border part of the magnetic pole, when it is attached to the field assembly 3. COPYRIGHT: (C)2005,JPO&NCIPI
|
