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    • 8. 发明授权
    • Hard disk and spindle motor assembly
    • 硬盘和主轴电机组合
    • US07511920B2
    • 2009-03-31
    • US11494464
    • 2006-07-28
    • Yong-kyu ByunMin-pyo HongCheol-soon KimNo-yeol Park
    • Yong-kyu ByunMin-pyo HongCheol-soon KimNo-yeol Park
    • G11B17/02
    • G11B17/0287G11B17/038
    • A spindle motor assembly includes a spindle motor having a shaft and a hub that rotates on the shaft, and a hard disk having a data storage medium mounted in the form of a whole disk, and a fastener attached to the center of a bottom surface of the disk-shaped data storage medium that faces the spindle motor. The fastener is a screw or a nut. In the case in which the fastener is a screw, a head of the screw is attached to the bottom surface of the hard disk, and the body of the screw is received in a screw hole in the upper portion of the shaft of the spindle motor. In the case in which the fastener is a nut, the nut is engaged with an external thread on an outer circumferential surface of the hub of the spindle motor.
    • 主轴电动机组件包括主轴电动机,该主轴电动机具有轴和在轴上旋转的轮毂,以及具有以整个盘的形式安装的数据存储介质的硬盘,以及附接到底盘表面的中心的紧固件 面对主轴电动机的盘状数据存储介质。 紧固件是螺钉或螺母。 在紧固件是螺钉的情况下,螺钉的头部附接到硬盘的底表面,螺钉的主体被容纳在主轴电机的轴的上部的螺纹孔中 。 在紧固件是螺母的情况下,螺母与主轴电机的轮毂的外周面上的外螺纹接合。
    • 10. 发明授权
    • Brushless DC motor and a method of generation power therewith
    • 无刷直流电动机及其发电方法
    • US5804904A
    • 1998-09-08
    • US784869
    • 1997-01-16
    • No-yeol ParkSeong-man JangGun-hee JangJin-yook Yoon
    • No-yeol ParkSeong-man JangGun-hee JangJin-yook Yoon
    • H02K29/00H02K3/18H02K3/28H02K21/22H02K23/26H02K29/03H02K1/22
    • H02K29/03H02K21/22H02K3/28
    • 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.
    • 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。