公开(公告)号：US06636379B2

公开(公告)日：2003-10-21

申请号：US09896729

申请日：2001-06-28

申请人： Randy K Rannow ,  Walter Wong

发明人： Randy K Rannow ,  Walter Wong

IPC分类号： G11B3314

CPC分类号： G11B33/08 ,  G11B25/043 ,  G11B33/1446

摘要： A particulate filter for a disc drive also functions as an acoustic noise filter and a mechanical vibration filter. The impaction filter covers substantial portions of the interior of the disc drive housing, thus reducing particulates in both radial and tangential airflow currents. The impaction filter is constructed of a soft material, such as polypropylene and modified acrylic fibers, so that particulates are bound to the surface of the impaction filter upon impact. The textured surface of the filter and the static caused by the operation of the discs in close proximity with the filter cause the particulates to tend to remain bound to the filter. Because the impaction filter covers substantial portions of the interior of the disc drive housing, rather than specific locations within the housing, the particulates in the tangential airflow currents are reduced. Moreover, the fabrication and coverage area of the impaction filter reduces acoustic noise and mechanical vibrations.

摘要翻译： 用于磁盘驱动器的微粒过滤器还用作声学噪声滤波器和机械振动滤波器。 冲击过滤器覆盖盘驱动器壳体的内部的大部分，从而减少径向和切向气流中的微粒。 冲击过滤器由诸如聚丙烯和改性丙烯酸纤维的软质材料构成，使得颗粒在冲击时结合到冲击过滤器的表面。 过滤器的纹理表面和由过滤器附近的盘的操作引起的静电导致颗粒倾向于保持与过滤器的结合。 因为冲击过滤器覆盖盘驱动器壳体的内部的大部分，而不是壳体内的特定位置，所以切向气流中的微粒减小。 此外，冲击滤波器的制造和覆盖区域减少了声学噪声和机械振动。