A magnetic disc drive assembly comprises a disc drive housing defining a drive chamber. A desiccant housing in the drive chamber is joined to the bottom wall of the disc drive housing. The desiccant housing has end walls and side walls extending along a width and a length, respectively, of the desiccant housing, the length being oriented substantially parallel to the length of the drive chamber to form a structural beam for the disc drive housing. The desiccant housing has a top opening between the desiccant chamber and the drive chamber and a bottom opening through the bottom wall of the drive housing through which the desiccant is placed into the desiccant chamber. A separate bottom cover closes the bottom opening so that the desiccant may be place into the disc drive as the last assembly step.
CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority from U.S. Provisional Application No. 60/057,955, filed Sept. 5, 1997 for "Ultra High Performance Disc Drive" by Kent J. Forbord and from U.S. Provisional Application No. 60/063,322, filed Oct. 27, 1997 for "Ultra High Performance Disc Drive" by Kent J. Forbord.
Embodiments of the present invention pertain to maintaining an acceptable level of relative humidity inside of a disk drive. According to one embodiment, clean dry air is blow over a cover of the disk drive. The cover includes an unsealed servo write slot. The amount of clean dry air blown over the cover is regulated while a servo write process is performed so that a portion of the clean dry air is introduced into the disk drive.
A hard disk device with air stabilizing wings which enable the straightening of the airflow between disks and the suppression of the vibration of disks and actuators.
A filter assembly for a data storage device. The filter assembly includes a flow passage having an inlet and outlet to provide a recirculating filter. The filter assembly is positioned to provide a pressure differential between the inlet and outlet of the flow passage. A breather filter includes an opening for ambient air exchange through a second flow passage which is opened to the pressure differential of the flow passage of the recirculating filter to enhance ambient air exchange. An air dam assembly interposed in an air flow path provides a high pressure region and low pressure region. An assembly structure includes an air dam and a filter flow passage to enhance the pressure differential across the flow passage. Flow turbulence through the flow passage is reduced via flow plates supported between raised edge portions of the flow passage.
A base support member for a disc drive is provided. The base support member includes a disc support cavity configured to house and support a spinning disc, and a filter support cavity configured to house and support a filter. The base support member also includes at least one surface that defines an airborne filtering channel that is generally disposed within the filter support cavity of the base support member. The airborne filtering channel has an inlet opening positioned in a first location proximate the disc support cavity and an outlet opening positioned in a second location proximate the disc support cavity. The airborne filtering channel is configured to receive a flow of air from the spinning disc at the inlet opening, pass the flow of air through the filter cavity and to discharge the flow of air at the outlet opening.
A base member of a disk drive having a bottom plate, on which a spindle motor to rotate a disk is mounted, and a side wall positioned along an edge of the bottom plate. The base member has a clock window positioned on the side wall, through which a clock head to write servo track information on the disk is inserted in the disk drive, and a concave adjacent to the clock window and having a predetermined depth relative to an upper surface of the bottom plate, to accommodate the clock head inserted through the clock window.
