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    • 6. 发明申请
    • DISK DEVICE
    • 磁盘设备
    • US20090083772A1
    • 2009-03-26
    • US11570000
    • 2006-01-12
    • Kenichi MiyamoriShigeo ObataHiromitsu NodaYoshiro Ueno
    • Kenichi MiyamoriShigeo ObataHiromitsu NodaYoshiro Ueno
    • G11B7/00
    • G11B17/0287G11B17/038
    • There is provided a disk apparatus having a clamp structure, which can fix a disk in a stable manner with a simple construction. More specifically, the disk apparatus includes a hub having a disk inserting portion having a cylindrical plane in the outer part of one end and a disk receiving portion having a flat part and being pivotably supported, a head having an inner hole through which the disk inserting portion is fitted, facing toward one face of a disk, levitating and scanning above the disk and reading a signal recorded on the disk or recording a signal on the disk, the disk being held by the disk receiving portion, and a clamp unit holding the disk with the disk receiving portion. In this case, the disk receiving portion has an inclined or declined plane. Thus, the amount and direction of deformation of the disk, which is caused by clamping, are defined, and obtaining a stable amount of head levitation independently of temperature changes can prevent the occurrence of a distortion of the disk. Therefore, a decrease in head output, for example, can be prevented, and the reliability can be improved.
    • 提供一种具有夹紧结构的盘装置,其能够以简单的结构以稳定的方式固定盘。 更具体地说,盘装置包括具有盘插入部分的轮毂,盘片插入部分在一端的外部具有圆柱形平面,盘片接收部分具有平坦部分并且可枢转地支撑,头部具有内孔,盘插入 安装面向盘的一个面的部分,悬浮并在盘上方扫描并读取记录在盘上的信号或在盘上记录信号,盘被盘接收部分保持,夹持单元保持 磁盘与磁盘接收部分。 在这种情况下,盘接收部分具有倾斜或倾斜的平面。 因此,限定由夹紧引起的盘的变形量和方向,并且独立于温度变化获得稳定的头部悬浮量可以防止盘的变形的发生。 因此,可以防止例如头部输出的减少,并且可以提高可靠性。
    • 7. 发明授权
    • Spindle motor and disk drive device using the same
    • 主轴电机和磁盘驱动装置使用相同
    • US07663280B2
    • 2010-02-16
    • US11912948
    • 2006-05-19
    • Kenichi MiyamoriShigeo ObataHiromitsu NodaHiromi Kita
    • Kenichi MiyamoriShigeo ObataHiromitsu NodaHiromi Kita
    • H02K7/08H02K7/00
    • G11B33/12G11B19/2009G11B33/123H02K7/085
    • A spindle motor and a disk drive device are provided that have a high operation efficiency of the motor, that does not leak oil, and that has an improved stability by decreasing a runout component in the direction of the rotation axis. The spindle motor includes a rotor hub (20) composed of a disk-like flange (201) and a cylinder-shaped shaft (203); a ring-shaped rotating magnet (16) fastened on one main surface of the flange (201); an armature (14) facing the rotating magnet (16); a sleeve (80) rotatably supporting the shaft (203); and a chassis (15) fixing the armature (14) and the sleeve (80). The flange (201) and the shaft (203) are integrally formed with magnetic material; a protrusion is not provided between a mounting surface (204) for mounting the rotating magnet (16) thereon and a counter-face surface (205) facing the end surface of the sleeve; and the mounting surface (204) and the counter-face surface (205) are orthogonal to the direction of the central axis (A-A′) of the shaft (203), and in a level plane; or the mounting surface (204) is recessed stepwise from the counter-face surface (205) toward the disk mounting portion (202).
    • 提供一种主轴电动机和磁盘驱动装置,其具有电动机的高操作效率,不会泄漏油,并且通过减小旋转轴线方向上的跳动分量而具有改进的稳定性。 主轴电动机包括由盘状凸缘(201)和圆筒形轴(203)构成的转子轮毂(20)。 固定在凸缘(201)的一个主表面上的环形旋转磁体(16); 面向所述旋转磁体的电枢(14); 可旋转地支撑所述轴(203)的套筒(80); 以及固定所述电枢(14)和所述套筒(80)的底座(15)。 凸缘(201)和轴(203)与磁性材料一体形成; 在其上安装旋转磁体(16)的安装表面(204)和面向套筒的端表面的相对表面(205)之间没有设置突起; 并且所述安装面(204)和所述反面面(205)与所述轴(203)的中心轴线(A-A')的方向正交,并且在平面内; 或者安装面(204)从对置面(205)向盘安装部(202)逐步凹陷。