| 简介 |
PROBLEM TO BE SOLVED : To provide a spindle motor of high efficiency of which iron loss can be reduced.
SOLUTION : The spindle motor includes a stator and a rotor. The rotor has a permanent magnet which is a high-resistance magnet of a specific resistance value being 0.2 mΩcm or higher, being partially insulated with a layer containing a fluorine compound containing at least one of rare earth elements or alkaline earth elements. The stator has a stator core having a yoke and a salient pole, as well as a stator coil. The stator core is made from a stacked steel plate. The salient pole and the yoke of the steel plate are formed by an etching process.
COPYRIGHT : (C)2009, JPO&INPIT |
客服热线：
手机版
二维码
