Hard disk drive having air pumping groove
AssigneeSamsung Electronics Co., Ltd.
InventorHong-Kwon Lee
Life of this patent
Estimating the term…
Abstract
In a hard disk drive, at least one groove is formed in any of the base plate and the cover plate to pump air toward an outer side of the disk. An outer end of the groove is located at a position inwardly separated from an edge of the disk such that an air journal zone of predetermined width is formed along a circumferential direction of the disk between the outer end of the groove and the edge of the disk. The groove is formed in multiple numbers in a circumferential direction of the disk at a predetermined interval and is extended in a radial direction from an inner side of the disk and curved in a direction in which the disk rotates. Thus, vibration of the disk is reduced by a damping operation of air pumped by the groove having a high pressure in the air journal zone.
Claims13
A hard disk drive comprising:
- a housing having a base plate and a cover plate;
- a spindle motor installed on the base plate;
- a data storage disk installed at the spindle motor;
- and
- an actuator pivotably installed on the base plate and having a magnetic head recording and reading out data on and from the disk,
- wherein a groove is formed in a surface that faces the disk of any of the base plate and the cover plate, to pump air toward an outer circumferential side of the disk, an outer end of the groove is located at a position inwardly separated a predetermined distance from an edge of the disk such that an air journal zone having a predetermined width is formed along a circumferential direction of the disk between the outer end of the groove and the edge of the disk.
A hard disk drive comprising:
- a storage disk;
- and
- a housing, wherein the housing has a groove formed therein to channel fluid to an outer circumference of the disk to reduce vibration.
Dependencies are inferred from the claim text.