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    • 9. 发明申请
    • SPINDLE MOTOR
    • 主轴电机
    • US20120306303A1
    • 2012-12-06
    • US13427799
    • 2012-03-22
    • Young Tae KIMSang Jin PARKWon Ki PARKIk Sun LEE
    • Young Tae KIMSang Jin PARKWon Ki PARKIk Sun LEE
    • H02K7/08
    • F16C17/107F16C17/026F16C33/107F16C2370/12
    • Disclosed herein is a spindle motor including a rotating part including a rotating shaft, a hub, and a magnet and a fixing part including a sleeve supporting the rotating shaft and an armature opposite to the magnet, wherein a working fluid is injected between the rotating shaft and the sleeve so as to form a fluid dynamic bearing part, and the sleeve is as a sintered sleeve by sintering and a top and a bottom of an inner peripheral surface of the sleeve is protruded toward the rotating shaft, whereby the spindle motor improving dynamic pumping capability and extending a span of a radial bearing part to a top end and a bottom end of the sleeve as compared with the spindle motor according to the prior art can be provided.
    • 这里公开了一种主轴电动机,其包括:旋转部,包括旋转轴,轮毂和磁体;以及固定部,包括支撑旋转轴的套筒和与磁铁相反的电枢,其中工作流体被注入到旋转轴 和套筒形成流体动力轴承部,套筒通过烧结作为烧结套筒,套筒的内周面的顶部和底部朝向旋转轴突出,由此主轴电机改善动态 可以提供与根据现有技术的主轴电机相比,泵送能力并将径向轴承部分的跨度延伸到套筒的顶端和底端。