公开(公告)号：US06724577B2

公开(公告)日：2004-04-20

申请号：US09790690

申请日：2001-02-23

申请人： Eiji Ishii ,  Takashi Kouno ,  Hayato Shimizu

发明人： Eiji Ishii ,  Takashi Kouno ,  Hayato Shimizu

IPC分类号： G11B554

CPC分类号： G11B21/22 ,  G11B5/54

摘要： The structure is made such that an aerodynamic latch is provided in an outer portion of a magnetic disc, a front end portion exposed to a wind in the aerodynamic latch is formed to be shorter than an outer peripheral surface of the magnetic disc, and the wind receiving portion of the aerodynamic latch moves an air stream outlet from an end surface of the magnetic disc and a shroud in a direction of forming a flow passage for passing through a portion apart from the magnetic disc. Accordingly, a stable aerodynamic latch drive can be achieved and an air stream within the disc is not disturbed, so that it is possible to reduce a flutter and a consumed electric power.

摘要翻译： 该结构使得在磁盘的外部设置空气动力学闩锁，在空气动力学闩锁中暴露于风中的前端部分形成为比磁盘的外周表面短，并且风 空气动力学闩锁的接收部分使空气流出口从磁盘的端面移动，并且护罩沿形成流路的方向移动以通过与磁盘分离的部分。 因此，可以实现稳定的空气动力学闩锁驱动，并且盘内的空气流不被干扰，使得可以减少颤动和消耗的电力。

公开(公告)号：US06243230B1

公开(公告)日：2001-06-05

申请号：US09277163

申请日：1999-03-26

申请人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

发明人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

IPC分类号： G11B1702

CPC分类号： H02K5/1675 ,  F16C17/028 ,  F16C33/1075 ,  F16C2370/12 ,  G11B19/2018

摘要： A disk drive unit includes a rotary member, which has a spindle, and has an information-recording disk fixedly mounted thereon, and a bearing unit rotatably supporting the spindle. The bearing unit includes a radial bearing device, provided in opposed relation to an outer peripheral surface of the spindle, and a thrust bearing device provided in opposed relation to a distal end surface of the spindle. The radial bearing device has a concentric arc-shaped bearing surface, which is concentric with the circular outer periphery of the spindle, and a non-concentric arc-shaped bearing surface which is non-concentric with the circular outer periphery of the spindle. The disk drive unit further includes a motor for imparting a rotational force to the spindle, and a lubricating fluid filled in the bearing unit.

摘要翻译： 磁盘驱动单元包括具有主轴的旋转构件，并且具有固定地安装在其上的信息记录盘，以及可旋转地支撑心轴的轴承单元。 轴承单元包括与主轴的外周表面相对设置的径向轴承装置，以及与主轴的远端表面相对设置的止推轴承装置。 径向轴承装置具有与心轴的圆形外周同心的同心圆弧状的支承面，以及与心轴的圆形外周不同心的非同心圆弧状的支承面。 盘驱动单元还包括用于向主轴施加旋转力的马达和填充在轴承单元中的润滑流体。