公开(公告)号：EP0915468A1

公开(公告)日：1999-05-12

申请号：EP98119865.8

申请日：1998-10-20

申请人： Hitachi, Ltd.

发明人： Okunaga, Nobuyuki ,  Iwakura, Masao ,  Nakagoshi, Kazuo ,  Ogawa, Takuji ,  Chuma, Akira ,  Kugiya, Fumio ,  Suzuki, Tomio ,  Kojima, Toshiaki ,  Sakai, Kazuo ,  Kodama, Naoki ,  Ishigaki, Tatsuya

IPC分类号： G11B25/04 ,  G11B5/012

CPC分类号： G11B33/142 ,  G11B5/012 ,  G11B25/043

摘要： A magnetic disk drive that shape coefficient is 3.5 inches are provided, which is designed as rotating magnetic media in a high speed in order to consume a low electric power, to generate a less heat, and to access more quickly.
When magnetic disk media are rotated in a higher speed, an electric power consumption and a heat generation are increased because of a load increase in rotating the magnetic disk media. An avoidance of such problems and setting an additional special cooling mechanism to magnetic disk drive systems, for example, disk array systems, is presented.
A housing 11 of magnetic disk drive in a shape coefficient 3.5 inches mounts magnetic disk media 21 for a magnetic disk drive in a shape coefficient 2.5 inches, which aims a lightweighting of a rotational spindle portion, a decrease of a torque loss during on-load rotation with the media, and a decrease of a electric current into a spindle motor 41 during rotation.
Further, fins 11a for heat radiation may be arranged around the housing 11, which results in avoidance or decrease raising a temperature in the housing 11.

摘要翻译： 提供了形状系数为3.5英寸的磁盘驱动器，其被设计为高速旋转磁介质以消耗低功率，产生较少的热量并更快地进入。 当磁盘介质以更高的速度旋转时，由于磁盘介质的旋转负载增加，电力消耗和发热量增加。 提出了避免这些问题并且为磁盘驱动系统（例如磁盘阵列系统）设置附加的专用冷却机构。 形状系数为3.5英寸的磁盘驱动器的壳体11以2.5英寸的形状系统安装用于磁盘驱动器的磁盘介质21，其目的在于减轻转动主轴部分的重量，减少负载中的扭矩损失 与介质的旋转，以及在旋转期间电流进入主轴电动机41的电流。 此外，用于散热的翅片11a可以布置在壳体11的周围，这导致避免或减小提高壳体11中的温度。