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    • 1. 发明授权
    • Spindle motor
    • 主轴电机
    • US06252322B1
    • 2001-06-26
    • US09411584
    • 1999-10-01
    • Naoki KawawadaTadao IwakiTakahumi SuzukiHiromitsu Goto
    • Naoki KawawadaTadao IwakiTakahumi SuzukiHiromitsu Goto
    • H02K516
    • F16C17/107F16C33/107F16C2370/12G11B19/2009H02K5/1675
    • A spindle motor comprises a base, a stator coil connected to the base, and a sleeve-and-bearing unit connected to a central portion of the base. The sleeve-and-bearing unit has a sleeve and a bearing section mounted in the sleeve having a linear expansion coefficient greater than that of the sleeve. The sleeve has a groove disposed in an outer peripheral surface thereof for receiving an adhesive material for connecting the base to the outer peripheral surface of the sleeve. A rotor unit is connected to the sleeve-and-bearing unit for undergoing rotation relative to the sleeve-and-bearing unit. The rotor unit has a shaft section supported by the bearing section for undergoing rotation, a hub connected to the shaft section for rotation therewith, and a rotor magnet connected to the hub and disposed opposite to and spaced apart from the stator coil.
    • 主轴电动机包括基座,连接到基座的定子线圈和连接到基座的中心部分的套筒和轴承单元。 套筒和承载单元具有套筒和安装在套筒中的轴承部分,线性膨胀系数大于套筒的线性膨胀系数。 套筒具有设置在其外周表面中的槽,用于接收用于将基座连接到套筒的外周表面的粘合材料。 转子单元连接到套筒和承载单元以相对于套筒和承载单元转动。 转子单元具有由轴承部分支承以转动的轴部分,连接到轴部分以与其一起旋转的轮毂,以及连接到毂并且与定子线圈相对并间隔开的转子磁体。