Flat noncommutator vibration motor,申请号US20040496340-传众专利搜索

Flat noncommutator vibration motor

申请公布号：US7173354(B2)

申请号：US20040496340

申请日期：2004.05.21

申请公布日期：2007.02.06

申请人：

J&J CORP.

发明人：KIM JUNG-HOON

分类号：H02K21/26;H02K7/06;H02K7/065;H02K7/075;H02K11/00;H02K29/08;H02P6/20;H02P25/02

主分类号：H02K21/26

摘要：Disclosed is an improved flat vibration motor to be disposed in a mobile communication terminal, etc. for generating a vibration signal. A brushless-type vibration motor without brushes and a commutator is adopted, instead of a brush-type vibration motor with the brushes and commutator. An eccentric portion is disposed on one side of the peripheral surface of a rotor made of a permanent magnet, and one or more pairs of hall sensors are mounted in the vibration motor so as to start and drive the vibration motor. A motor controller may be used as internally or externally disposed on the vibration motor. The arrangement of a stator coil is improved so as to reduce the loss of magnetic flux as well as remove the non-operation points, thereby preventing the starting and driving disorders of the vibration motor, and improving its performance and efficiency.