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Head balance rack assembly and disc driver

A disk drive and gimbal technology, which is applied in the field of circuit layout, can solve problems such as positioning accuracy limitations, and achieve the effect of suppressing adverse effects

Inactive Publication Date: 2010-06-23
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are positioning accuracy limitations when using voice coil motors (VCMs) to drive actuators

Method used

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  • Head balance rack assembly and disc driver
  • Head balance rack assembly and disc driver
  • Head balance rack assembly and disc driver

Examples

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be described below. For clarity of illustration, the following description and drawings may contain appropriate omissions and simplifications. Throughout the drawings, like elements are denoted by like reference numerals, and unnecessary repetitive descriptions thereof are omitted for clarity of illustration. In the embodiments of the present invention, a hard disk drive (HDD) has been described as an example of a disk drive device.

[0027] An HDD according to an embodiment of the present invention includes a two-stage actuator including a positioning mechanism using a voice coil motor and a positioning mechanism (microactuator) on a suspension using a piezoelectric element. A microactuator according to an embodiment of the present invention includes two piezoelectric elements fixed in gimbal tongues. The two piezoelectric elements are arranged side by side in the rotation direction of the actuator (left-right direc...

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Abstract

The invention provides a head balance rack assembly and disc driver, a piezoelectric element is fixed in an HGA in a tongue part of a balance rack, the unfavorable influence of a cable on the rotation of a head slide block caused by the telescoping motion of the piezoelectric element is inhibited. In one embodiment of the invention, The HGA (200) comprises two piezoelectric elements (205a, 205b) fixed in the tongue part (223) of the balance rack. The head slide block (105) is adhered on a stage (131) of the tongue part of the balance rack. the telescoping motion of the piezoelectric elements causes the rotation of the stage. lead-in wires (217a-217b) for transmitting a signal for the head slide block extend and are inserted between a connecting weld tray (315) and a connecting weld tray (315b) at the head slide block side of the piezoelectric elements. The arrangement can reduce the stress caused when the rigidity of the cables resists the telescoping of the piezoelectric element, thereby inhibiting the wobbling of the piezoelectric element to be reduced.

Description

technical field [0001] The present invention relates to head gimbal assemblies and disk drives, and more particularly to wiring arrangements in head gimbal assemblies with piezoelectric elements. Background technique [0002] Disk drive devices using various recording disks such as optical disks, magneto-optical disks and floppy disks are known in the art. In particular, hard disk drives (HDDs) have been widely used as storage devices for computers and have become an indispensable storage device for current computer systems. Furthermore, HDDs have been widely used in mobile image recording / reproducing devices, car navigation systems, cellular phones, etc. other than computers due to their outstanding characteristics. [0003] The magnetic disks used in HDDs have multiple concentric data and servo tracks. Each data track includes a plurality of data sectors containing user data recorded thereon. Each servo track has address information. A servo track includes a plurality ...

Claims

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Application Information

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IPC IPC(8): G11B5/60G11B21/21G11B21/10
CPCG11B5/4853G11B5/4873
Inventor 高田茂则高桥治英萩谷忍若月耕作土田裕康须藤公彦
Owner WESTERN DIGITAL TECH INC
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