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Suspension, and head gimbal assembly and disk drive using the same

一种悬臂件、磁头的技术，应用在臂部件的结构、臂和臂架之间的电连接、换能头相对于臂部件的安装/连接等方向，能够解决降低挠性件103、降低磁盘驱动器可靠性、无法进行磁盘驱动器迅速启动等问题，达到提高线性刚度的效果

Inactive Publication Date: 2007-10-10
SAE MAGNETICS (HK) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, as mentioned above, if the pitch / roll rigidity of the tongue portion 133 is reduced by making the plate thickness of the flexible member 103 thinner, the lengthwise direction of the flexible member 103 will be reduced instead (refer to Fig. 23 ). Arrow 100) stiffness (hereinafter referred to as "linear stiffness") and other issues
And, if adopt the CSS driver of the mode that puts the magnetic head slider on the magnetic disk, and rotate this magnetic disk to make the magnetic head slider float on the magnetic disk, it will cause the magnetic head slider mounted on the tongue part to follow the The disk rotates and is stretched, and thus is attracted by the disk, so that it cannot complete a quick and proper levitation action
[0011] As a result, the disk drive cannot be started quickly, and the disk may not be read correctly, thereby reducing the reliability of the disk drive

Method used

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  • Suspension, and head gimbal assembly and disk drive using the same
  • Suspension, and head gimbal assembly and disk drive using the same
  • Suspension, and head gimbal assembly and disk drive using the same

Examples

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Effect test

Embodiment 1

[0057] The first embodiment of the present invention will be described with reference to FIG. 4 to FIG. 8 . 4 to 5 show the structure of the head gimbal assembly of the present invention, and FIGS. 6 to 7 are enlarged schematic views showing the structure of the flexure and wiring. Fig. 8 is data showing the characteristics of the flexible member of this embodiment.

[0058] [constitute]

[0059] 4 to 5 show a structural example of the HGA 10 mounted on the hard disk drive related to this embodiment. FIG. 4 shows a side view, and FIG. 5 shows a top view of FIG. 4 viewed from below (the surface facing the magnetic disk).

[0060] As shown in Fig. 4 and Fig. 5, the magnetic head gimbal assembly 10 includes: a magnetic head slider 1; a micro-actuator 2 that micro-drives the magnetic head slider 1 and is clamped by an arm; A microactuator 2 and an elastic flexible member 3; a wiring 4 (FPC (flexible printed circuit)) that is formed on the flexible member 3 and transmits signals...

Embodiment 2

[0073] Next, in the cantilever members 3 and 4 of the above structure, the simulation performed to investigate the appropriate value by changing the position and area of ​​the adhesive portion A (fixed portion between the flexible member 3 and the wiring 4 ) will be described. result.

[0074] First, description will be made with reference to FIG. 9A to FIG. 12 . 9A, 9B, 10A, and 10B show suspension members 3 and 4 of different shapes designed by changing the bonding area between the wiring 4 (actuator lead 42 ) on the bonding portion A and the tongue portion 33 . In addition, for convenience of explanation, the structure shown in FIG. 9A is called model 1, and the structure shown in FIG. 10A is called model 3. Each of FIGS. 9A and 10A shows a plan view, and each of FIGS. Schematic enlarged view of site α. In addition, although the simulation was performed using the model 2 and the model 4 having different shapes, the relevant illustration of the other model 2 and the model ...

Embodiment 3

[0086] Next, a third embodiment of the present invention will be described with reference to FIGS. 21 to 22 . In the above-mentioned embodiment, the case where the microactuator is mounted on the HGA and the actuator wire 42 connected to the microactuator is connected to the tongue part 33 has been described. However, in this embodiment, the wiring 4 connected to the read element side terminal formed on the end surface of the magnetic head slider (not shown) is bonded (fixed) to the tongue portion 33 .

[0087] Fig. 21 shows one example. In this illustration, the wiring 4 extending from the rear end side of the flexible member 3 to the cantilever beam 32 facing the reading element side terminal located at the front end is bent inwardly in front of the front end, and a part of the bent portion 42a is It is adhered (fixed) on the inner side of the tongue part 33 . Also, the wiring 4 extends toward the front end side, is bent back toward the tongue portion 33 in front of the co...

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PUM

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Abstract

A suspension is provided for improving reliability in reading / writing of data by improving stiffness in a longitudinal direction of a flexure while realizing low pitch / roll stiffness of a tongue part. The suspension includes: a flexure, including two branched outrigger parts extending to the tip side of the flexure, and a tongue part for mounting a magnetic head slider, located between the outrigger parts and linked to the tip sides of the outrigger parts; a trace formed on the flexure; and a fixed part in which at least a part of a bent part formed in the trace is fixed to the tongue part.

Description

technical field [0001] The invention relates to a suspension, in particular to a suspension equipped with a magnetic head slider. Moreover, it also relates to a head gimbal assembly and a disk drive using the suspension. Background technique [0002] A hard disk drive is an information storage device equipped with a head gimbal assembly mounted with a head slider for recording / reproducing data on a storage medium such as a magnetic disk. Hereinafter, a HGA 100 in the prior art will be introduced with reference to FIG. 1 . [0003] The head gimbal assembly 100 includes a head slider 101, an elastic flexible member 103 on which the head slider 101 is installed at the front end, and an FPC 104 formed on the flexible member 103 to transmit information to the head slider. (flexible printed circuit), and a load bar 105 supporting the flexible member 103 . Wherein, the load bar 105 is installed on the magnetic head arm by means of a substrate (not shown in the figure). Moreover...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/55
CPCG11B5/4833G11B5/4853G11B5/5552G11B5/4826G11B5/486Y10T29/49025
Inventor 松井秀敏本田隆和田善光
Owner SAE MAGNETICS (HK) LTD
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