公开(公告)号：US5804904A

公开(公告)日：1998-09-08

申请号：US784869

申请日：1997-01-16

申请人： No-yeol Park ,  Seong-man Jang ,  Gun-hee Jang ,  Jin-yook Yoon

发明人： No-yeol Park ,  Seong-man Jang ,  Gun-hee Jang ,  Jin-yook Yoon

IPC分类号： H02K29/00 ,  H02K3/18 ,  H02K3/28 ,  H02K21/22 ,  H02K23/26 ,  H02K29/03 ,  H02K1/22

CPC分类号： H02K29/03 ,  H02K21/22 ,  H02K3/28

摘要： An improved 10-pole 9-slot brushless DC motor used as a spindle motor used in devices, such as a computer hard disk driver or a laser scanner, is provided which reduces cogging torque and improves driving torque. The motor includes a field magnet having an annular permanent magnet which is formed of 10 magnetic poles attached to each other in a radial orientation, for generating a flux field and an armature formed by winding an armature core formed of nine slots and nine salient-poles with windings connected in three phases. Also, the field magnet of the motor is rotated by the rotating magnetic field generated by the armature windings. Since the motor has a short cycle and low cogging torque, the motor is very stable. Also, torque ripple is low and the torque characteristics as a whole are improved, thus achieving high efficiency.

摘要翻译： 用作用于诸如计算机硬盘驱动器或激光扫描器的装置中的主轴电动机的改进的10极9槽无刷直流电动机，其减少齿槽转矩并提高驱动扭矩。 电动机包括具有环形永磁体的磁场磁体，该环形永磁体由径向定向彼此附接的10个磁极形成，用于产生磁通场，以及通过卷绕由9个槽和9个凸极组成的电枢铁芯而形成的电枢 绕组分三相连接。 此外，电动机的磁场磁体由电枢绕组产生的旋转磁场旋转。 由于电机具有短循环和低齿槽转矩，电机非常稳定。 此外，转矩脉动低，整体上的转矩特性提高，从而达到高效率。