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Disc drive, rigid disc drive and casing for rigid disc drive

A technology of hard disk drive and drive device, applied in the direction of driving/moving recording heads, instruments, flat record carrier equipment, etc., to achieve the effects of reducing disc jitter, stabilizing turbulence, and reducing disc jitter

Inactive Publication Date: 2005-11-09
HITACHI GLOBAL STORAGE TECH NETHERLANDS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the increase of HDD rotation speed causes the problem of read / write data accuracy caused by disk jitter to become very serious

Method used

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  • Disc drive, rigid disc drive and casing for rigid disc drive
  • Disc drive, rigid disc drive and casing for rigid disc drive
  • Disc drive, rigid disc drive and casing for rigid disc drive

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] Embodiments of the present invention will be described with reference to the drawings.

[0035] figure 1 is a plan view of a hard disk drive (HDD) 10 according to this embodiment of the present invention, and figure 2 yes figure 1 A side view of HDD 10 is shown. The HDD 10 is a head load / unload type HDD. In addition, the HDD 10 has a 3.5-inch form factor and is rated at 15,000 rpm to increase data read / write speed.

[0036] Such as figure 1 As shown, the HDD 10 forms a disk case 16 by sealing the upper portion of the opening of the shallow box-shaped aluminum alloy base 12 with a top cover 14 (not shown in this figure).

[0037] The top cover 14 is screwed to the base 12 through a rectangular frame-shaped sealing member (not shown) by which the inside of the disk case 16 is made airtight.

[0038] Inside the disk housing 16 , a spindle motor 18 with a built-in bushing structure is arranged at the center of the base 12 . On the top surface of the shaft sleeve 20 ...

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PUM

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Abstract

The invention provides a disk plate drving device, a hard disk driver and a shell for the hard disk dirver. To restrain a flutter of a magnetic disk in a high-speed hard disk drive, a ramp 40 is provided so as to be separated with a predetermined space from a side wall 12a of a base 12. Between the side wall 12a and the ramp 40 is formed a bypass channel 42. An air flow is supplied toward a magnetic disk 22 through the bypass channel 42. By using such a configuration, a flutter of the magnetic disk is reduced.

Description

technical field [0001] The invention relates to a disk drive device represented by a hard disk drive. Background technique [0002] A hard disk drive (hereinafter abbreviated as HDD) is widely used as a computer data storage device, and has a structure in which a single or a plurality of magnetic disks are arranged coaxially and driven by a spindle motor. A head positioned relative to the disk reads data from, and writes data to, the disk. The magnetic head is driven by an actuator, generally a Voice Coil Motor (hereinafter abbreviated as VCM). The disks, heads and actuators are housed in a housing called the disk housing. The disc case is composed of a thin box-shaped base made of, for example, an aluminum alloy, and a top cover for sealing the opening of the base. [0003] A major technical problem with HDDs is to increase the speed at which data stored on the disk is read, and the speed at which data is written to the disk. One way to solve thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B21/12G11B5/54G11B21/02G11B25/04G11B33/14
CPCG11B5/54G11B33/148G11B21/02
Inventor 中本辰雄津田真吾
Owner HITACHI GLOBAL STORAGE TECH NETHERLANDS BV
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