Development of balanced-type high shock suspension for 0.85-in hard disk drive

Author

Kuwajima, Hideki ; Kita, Hiromi ; Hashi, Hideyuki ; Miyamoto, Makoto ; Ueno, Yoshihiro ; Inagaki, Tatsuhiko ; Matsuoka, Kaoru

Author_Institution

Panasonic Electron. Devices Co., Ltd, Fukui, Japan

Volume

42

Issue

2

fYear

2006

Firstpage

255

Lastpage

260

Abstract

In this paper, we propose a novel shockproof head gimbals assembly (HGA) structure incorporated with "a balanced-type head suspension" for 0.85-in hard disk drives (HDDs), and investigated its performance on external shock resistance during read/write operations. Experimental drop impact test results confirm that the 0.85-in drive equipped with the new suspension structure is durable over 2000 G (1.0 ms duration) of external shock, ensuring no head slider and/or disk surface damage. According to computer simulation and experimental results, potential shock resistance of more than 2000 G may also be possible with the head actuator itself, which points to its application in cellular phones.

Keywords

disc drives; hard discs; impact testing; magnetic heads; shock absorbers; suspensions (mechanical components); 0.85 in; 1 ms; balanced-type head suspension; cellular phones; computer simulation; disk surface damage; drop impact test; external shock resistance; hard disk drive; head actuator; head gimbals assembly; head slider; high shock suspension; impact acceleration; read-write operations; Actuators; Application software; Assembly; Cellular phones; Computer simulation; Drives; Electric shock; Hard disks; Surface resistance; Testing; Balanced-type suspension; drop impact test; external shock resistance; hard disk drive; head gimbals assembly; impact acceleration; mobile use; shock-proof;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.861736

Filename

1580684