SPINDLE MOTOR AND DISK DRIVE APPARATUS PROVIDED WITH THE SAME
    4.
    发明申请
    SPINDLE MOTOR AND DISK DRIVE APPARATUS PROVIDED WITH THE SAME 审中-公开
    主轴电机和磁盘驱动装置提供

    公开(公告)号:US20090168639A1

    公开(公告)日:2009-07-02

    申请号:US12342242

    申请日:2008-12-23

    IPC分类号: G11B23/00

    摘要: A spindle motor includes a rotor unit rotatably supported by a bearing portion arranged to rotate about a central axis, a stator radially opposed to the rotor magnet with a gap therebetween and a substantially ring-shaped magnetic member arranged within a gap at an axial space between a disk and coil layers of the stator. The magnetic member includes a first planar portion and a second planar portion formed in a region overlapping with a moving region of a head unit, the first planar portion being positioned higher than the second planar portion. A carriage unit arranged to support the head unit may be accommodated within a space defined by the radial outer surface of the first planar portion, the upper surface of the second planar portion and the lower surface of the disk. Further, the coil layers can be made radially non-uniform in conformity with the shape of the magnetic member.

    摘要翻译: 主轴电动机包括转子单元,该转子单元由布置成围绕中心轴线旋转的轴承部分可转动地支撑,与转子磁体径向相对的定子,其间具有间隙,并且基本上环形的磁性部件布置在间隙内, 定子的盘和线圈层。 磁性构件包括形成在与头单元的移动区域重叠的区域中的第一平面部分和第二平面部分,第一平面部分定位成高于第二平面部分。 布置成支撑头单元的托架单元可以容纳在由第一平面部分的径向外表面,第二平面部分的上表面和盘的下表面限定的空间内。 此外,线圈层可以根据磁性构件的形状在径向上不均匀地制成。

    Disk drive spindle motor with hole volume and component density relationship
    5.
    发明授权
    Disk drive spindle motor with hole volume and component density relationship 有权
    磁盘驱动主轴电机具有孔体积和组件密度的关系

    公开(公告)号:US08675304B2

    公开(公告)日:2014-03-18

    申请号:US13353557

    申请日:2012-01-19

    摘要: A motor includes a stationary portion and a rotating portion. The rotating portion includes a sleeve portion including one communicating hole arranged to extend completely there through from an upper surface to a lower surface thereof, and a cover portion including a hole portion. The axial extension range of the hole portion is arranged to overlap with the axial extension range of the communicating hole in a radial direction. A center of the hole portion is arranged on a plane including a central axis and a center of the communicating hole. The communicating hole and the hole portion are arranged on opposite sides of the central axis. The following inequality is satisfied: V2

    摘要翻译: 电动机包括固定部分和旋转部分。 旋转部分包括套筒部分,该套筒部分包括一个连通孔,其布置成从上表面到下表面完全延伸,以及包括孔部分的盖部分。 孔部的轴向延伸范围与径向的连通孔的轴向延伸范围重叠。 孔部的中心配置在包括连通孔的中心轴和中心的平面上。 连通孔和孔部布置在中心轴的相对侧。 满足以下不等式:V2 <(sigma1 / sigma2)·V1,其中sigma1是套筒部分的密度,V1是连通孔的体积,sigma2是盖部分的密度,V2是体积 孔部。

    MOTOR AND STORAGE DISK DRIVE
    7.
    发明申请
    MOTOR AND STORAGE DISK DRIVE 有权
    电机和存储盘驱动器

    公开(公告)号:US20120250183A1

    公开(公告)日:2012-10-04

    申请号:US13353557

    申请日:2012-01-19

    IPC分类号: H02K5/24 G11B17/02

    摘要: A motor includes a stationary portion and a rotating portion. The rotating portion includes a sleeve portion including one communicating hole arranged to extend completely there through from an upper surface to a lower surface thereof, and a cover portion including a hole portion. The axial extension range of the hole portion is arranged to overlap with the axial extension range of the communicating hole in a radial direction. A center of the hole portion is arranged on a plane including a central axis and a center of the communicating hole. The communicating hole and the hole portion are arranged on opposite sides of the central axis. The following inequality is satisfied: V2

    摘要翻译: 电动机包括固定部分和旋转部分。 旋转部分包括套筒部分,该套筒部分包括一个连通孔,其布置成从上表面到下表面完全延伸,以及包括孔部分的盖部分。 孔部的轴向延伸范围与径向的连通孔的轴向延伸范围重叠。 孔部的中心配置在包括连通孔的中心轴和中心的平面上。 连通孔和孔部布置在中心轴的相对侧。 满足以下不等式:V2 <(&sgr; 1 /&sgr; 2)·V1,其中&sgr; 1是套筒部分的密度,V1是连通孔的体积,2是盖的密度 部分,V2是孔部的体积。