Hard disk drive having a damper for reducing vibrations

    公开(公告)号:US07023657B2

    公开(公告)日:2006-04-04

    申请号:US10175952

    申请日:2002-06-21

    IPC分类号: G11B17/02

    CPC分类号: G11B25/043 G11B33/08

    摘要: A hard disk drive having a vibration reducing damper is disclosed. The hard disk drive is provided with a damper which is interposed between a through hole provided at a cover plate and a screw joined to the upper end of the shaft of a spindle motor, and includes at least one viscoelastic material layer. It is preferable that the damper has a multi-layered structure in which at least one high stiffness layer has relatively higher stiffness and at least one low stiffness layer made of a viscoelastic material has relatively lower stiffness. With the above configuration, the damper restrains vibrations generated by the spindle from being transferred to the cover plate, noises generated by the hard disk drive are reduced, and, in addition, since vibrations generated by the spindle motor are damped, disk fluttering is reduced.

    DISK PLAYER, AND TURNTABLE INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER, CLAMPER INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER AND SPINDLE MOTOR INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER ADOPTED FOR DISK PLAYER
    92.
    发明授权
    DISK PLAYER, AND TURNTABLE INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER, CLAMPER INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER AND SPINDLE MOTOR INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER ADOPTED FOR DISK PLAYER 有权
    自动补偿动力平衡机,自动补偿动力平衡机,自动补偿动力平衡机和主动马达,包含自动补偿动力平衡盘

    公开(公告)号:US06456583B1

    公开(公告)日:2002-09-24

    申请号:US09487245

    申请日:2000-01-20

    IPC分类号: G11B1920

    摘要: A disk player having a self-compensating dynamic balancer which can limit internal vibrations generated by an eccentric center of gravity of a disk, and a turntable, a clamper and a spindle motor which incorporate a self-compensating dynamic balancer. The self-compensating dynamic balancer is formed integrally with rotating members in a disk player; that is, a turntable, a clamper and/or a rotor of a spindle motor. The self-compensating dynamic balancer includes at least one race which is integrally formed with the rotating member and rotates around a rotational shaft, a mobile unit which is located in the race to be capable of moving, and a cover member for covering an opening of the race. Thus, internal vibrations occurring due to the eccentric center of gravity of the disk can be effectively limited by the self-compensating dynamic balancer in which the mobile unit is disposed far away from the center of orbital rotation by a centrifugal force during rotation of the disk.

    摘要翻译: 具有能够限制由盘的偏心重心产生的内部振动的自补偿动平衡器的磁盘播放器,以及包含自补偿动态平衡器的转台,夹持器和主轴电动机。 自补偿动平衡器与盘播放器中的旋转构件一体形成; 即主轴电动机的转台,夹持器和/或转子。 所述自补偿动平衡器包括至少一个与所述旋转构件整体形成并围绕旋转轴旋转的座圈,位于所述座圈中以便能够移动的移动单元和用于覆盖所述旋转轴的开口的盖构件 比赛 因此,由于盘的偏心重心产生的内部振动可以被自补偿动平衡器有效地限制,其中移动单元在盘的旋转期间通过离心力远离轨道旋转中心远离轨道旋转中心 。

    DISK PLAYER, AND TURNTABLE INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER, CLAMPER INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER AND SPINDLE MOTOR INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER ADOPTED FOR DISK PLAYER
    93.
    发明授权
    DISK PLAYER, AND TURNTABLE INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER, CLAMPER INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER AND SPINDLE MOTOR INCORPORATING SELF-COMPENSATING DYNAMIC BALANCER ADOPTED FOR DISK PLAYER 有权
    自动补偿动力平衡机,自动补偿动力平衡机,自动补偿动力平衡机和主动马达,包含自动补偿动力平衡盘

    公开(公告)号:US06373154B1

    公开(公告)日:2002-04-16

    申请号:US09487244

    申请日:2000-01-20

    IPC分类号: H02K704

    摘要: A disk player having a self-compensating dynamic balancer which can limit internal vibrations generated by an eccentric center of gravity of a disk, and a turntable, a clamper and a spindle motor which incorporate a self-compensating dynamic balancer. The self-compensating dynamic balancer is formed integrally with rotating members in a disk player; that is, a turntable, a clamper and/or a rotor of a spindle motor. The self-compensating dynamic balancer includes at least one race which is integrally formed with the rotating member and rotates around a rotational shaft, a mobile unit which is located in the race to be capable of moving, and a cover member for covering an opening of the race. Thus, internal vibrations occurring due to the eccentric center of gravity of the disk can be effectively limited by the self-compensating dynamic balancer in which the mobile unit is disposed far away from the center of orbital rotation by a centrifugal force during rotation thereof.

    摘要翻译: 具有能够限制由盘的偏心重心产生的内部振动的自补偿动平衡器的磁盘播放器,以及包含自补偿动态平衡器的转台,夹持器和主轴电动机。 自补偿动平衡器与盘播放器中的旋转构件一体形成; 即主轴电动机的转台,夹持器和/或转子。 所述自补偿动平衡器包括至少一个与所述旋转构件整体形成并围绕旋转轴旋转的座圈,位于所述座圈中以便能够移动的移动单元和用于覆盖所述旋转轴的开口的盖构件 比赛 因此,可以通过自动补偿动平衡器有效地限制由于盘的偏心重心产生的内部振动,其中移动单元在其旋转期间通过离心力远离轨道旋转中心远离轨道旋转中心。