摘要:
A spindle motor assembly that utilizes a fluid dynamic bearing electrically grounded to provide a conductive path through the spindle motor assembly. In one embodiment, the fluid dynamic bearing includes a liquid metal that is conductive and of low electrical resistance that provides the conductive path between the spindle and the spindle housing.
摘要:
A Spindle motor assembly that utilizes a fluid dynamic bearing electrically grounded to provide a conductive path through the spindle motor assembly. In one embodiment, the fluid dynamic bearing includes a liquid metal that is conductive and of low electrical resistance that provides the conductive path between the spindle and the spindle housing.
摘要:
Approaches for a single part that comprises an upstream spoiler and a crash stop for use within a hard-disk drive (HDD). The integrated upstream spoiler and crash stop has one or more wings which diverts and reduces the flow of air, resulting from the rotation of the magnetic-recording disks within the HDD, from a magnetic-recording head of the HDD. The integrated upstream spoiler and crash stop has a structure that also prevents the actuator from moving beyond a particular location. After the integrated upstream spoiler and crash stop has been affixed within the HDD, the one or more wings may be rotated between the one or more magnetic-recording disks into a desired position.
摘要:
Approaches for determining the likelihood that a hard-disk drive (HDD) will experience an imminent error in operation, and preventing the same, using an atmospheric pressure sensor are provided. The HDD comprises an atmospheric pressure sensor capable of determining the altitude at which the HDD is currently located. The HDD also comprises a risk assessment component capable of (a) determining an expression of how likely it is that the HDD will experience an imminent error in operation based, at least in part, upon the current altitude of the HDD, and (b) communicating the expression to a user of the HDD. The HDD may optionally comprise one or more of a particle counter, differential pressure sensor, and a chemical vapor sensor for use by the risk assessment component. If the HDD is above a particular altitude, the Thermal Fly-Height control settings of the heads may be adjusted to reduce risk of error.
摘要:
An aerodynamic device for aerostatic sealing in a hard disk drive (HDD) including an exterior surface configured to modify airflow in the HDD and proximate at least one magnetic disk and an inlet port configured to receive pressurized airflow. The aerodynamic device also includes a plurality of outlet ports disposed on the exterior surface configured to discharge the pressurized airflow directly onto the at least one magnetic disk and aerostatically seal the aerodynamic device with the at least one magnetic disk.
摘要:
Approaches for a single part that comprises an upstream spoiler and a crash stop for use within a hard-disk drive (HDD). The integrated upstream spoiler and crash stop has one or more wings which diverts and reduces the flow of air, resulting from the rotation of the magnetic-recording disks within the HDD, from a magnetic-recording head of the HDD. The integrated upstream spoiler and crash stop has a structure that also prevents the actuator from moving beyond a particular location. After the integrated upstream spoiler and crash stop has been affixed within the HDD, the one or more wings may be rotated between the one or more magnetic-recording disks into a desired position.
摘要:
An apparatus and method for increasing the buffer volume in a fluid dynamic bearing is disclosed. One embodiment provides a thrust washer coupled with a shaft of a fluid dynamic bearing. In addition, at least one groove is provided on an outward facing side of the thrust washer. In so doing, the at least one groove increases a fluid capacity of the capillary buffer of the fluid dynamic bearing without requiring a change in the size or shape of a capillary buffer of the fluid dynamic bearing.
摘要:
The disk lubricant tank of the present invention includes a lubricant bath cover device that resides on the lubricant bath surface to suppress surface waves. The bath cover includes a plurality of finger-like projecting members that define a plurality of disk passage slots therebetween. A plurality of disks are disposed upon a disk holding mandrel and are lowered into the lubricant bath. Each disk passes through a separate disk passage slot during the dipping process. The finger-like projections reside on the bath surface between the disk to suppress surface waves that would otherwise impinge upon side surfaces of the disk, leading to lubricant overcoat areas upon the side surfaces of the disk. Therefore, hard disks of the present invention are formed with a more uniform lubricant coating wherein unwanted lubricant overcoat areas formed by surface waves in the lubricant bath are suppressed.
摘要:
A load/unload ramp spoiler for a hard disk drive is disclosed. One embodiment provides a load/unload ramp body having at least one load/unload ramp associated therewith, the at least one load/unload ramp for receiving at least one slider coupled with an actuator assembly. In addition, at least one spoiler is integrated with the load/unload ramp body to reduce detrimental local excitation of an airflow encountering the load/unload ramp body.
摘要:
A bearing system having variably grooved radial and thrust bearing with reduced groove angle near bearing entry is described. In an embodiment, the bearing system includes a housing. The bearing system also includes a shaft centrally located in the housing. The bearing system additionally includes a rotor portion that is adapted to be rotated about the shaft and contained within the housing. The bearing further includes a variably angled groove disposed on an internal surface of the bearing system. The variably angled groove reduces ingestion of air in the bearing system during operation of the bearing system.