发明授权
US06243230B1 Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit
有权
带有流体动力流体轴承单元的磁盘驱动单元和带有驱动单元的磁盘设备
- 专利标题： Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit
- 专利标题（中）： 带有流体动力流体轴承单元的磁盘驱动单元和带有驱动单元的磁盘设备
-
申请号： US09277163申请日： 1999-03-26
-
公开(公告)号： US06243230B1公开(公告)日： 2001-06-05
- 发明人: Katsutoshi Nii , Kenji Tomida , Hiroshi Nishida , Kouki Uefune , Yuuichi Yanagase , Masaru Muranishi , Takashi Kouno , Kazuhiko Kawakami , Hisanobu Kanamaru , Noriyuki Kumasaka
- 申请人： Katsutoshi Nii , Kenji Tomida , Hiroshi Nishida , Kouki Uefune , Yuuichi Yanagase , Masaru Muranishi , Takashi Kouno , Kazuhiko Kawakami , Hisanobu Kanamaru , Noriyuki Kumasaka
- 优先权： JP10-085497 19980331
- 主分类号： G11B1702
- IPC分类号： G11B1702
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.
信息查询
