Micro-driver, magnetic head tabs assembly and magnetic disk driver using it
A technology of micro-drive and magnetic head, which is applied in the directions of aligning the magnetic track on the magnetic disk, driving/moving the recording head, configuring/installing the recording head, etc., which can solve the problem of limiting the bandwidth of the servo system of the disk drive and improving the capacity, and achieves the increase The effect of large servo system bandwidth, good head position adjustment, and large position stroke adjustment ability
Inactive Publication Date: 2008-08-13
SAE MAGNETICS (HK) LTD
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Problems solved by technology
[0007] However, since the piezoelectric micro-actuator 205 and magnetic head 203 are mounted on the cantilever tongue (not shown), when the piezoelectric micro-actuator 205 is excited, it will act as Simple translation causes the magnetic head 203 to oscillate, which produces a resonance of the suspension at the same frequency as the vibration caused by the excitation of the suspension substrate.
This will limit the disk drive's servo bandwidth and increase in capacity
Method used
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[0046] refer to image 3 According to the present invention, a magnetic head gimbal assembly 3 includes a magnetic head 31 , a micro-driver 32 and a suspension member 8 for carrying the magnetic head 31 and the micro-driver 32 .
[0047] Also refer to image 3 , the suspension member 8 includes a load beam (load beam) 17 , a flexible member (flexure) 13 , a hinge member (hinge) 15 and a base plate (base plate) 11 . The load bar 17 is provided with a plurality of small protrusions 329 (refer to Figure 6 ). A plurality of electrode contacts 308 are provided on the flexible member 13 , one end of the plurality of electrode contacts 308 is connected to a control system (not shown), and the other end is connected to a plurality of cables 309 , 311 . refer to Figure 4 and 5 , the flexible member 13 also includes a cantilever tongue (suspension tongue) 328, the cantilever tongue 328 is used to support the micro-driver 32 and the magnetic head 31, and make the bearing force alw...
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The assembly includes magnetic head, rotatable micro drive, and cantilever part for supporting magnetic head and the drive. The rotatable micro drive rotates the magnetic head horizontally with core of magnetic head as axis. The rotatable micro drive includes bottom plate connected to the cantilever part, two arm plates distributed on the bottom plate symmetrically, and at least one piezo-electric piece connected to the arm plate. The said rotatable micro drive also can include four pieces of arm plates distributed on the bottom plate symmetrically, and four piezo-electric pieces connected to the four piezo-electric pieces. The invention also discloses structure of hard disk drive of using the said assembly.
Description
technical field [0001] The present invention relates to a disk drive, in particular to a micro drive and a head gimbal assembly using the micro drive. Background technique [0002] A disk drive is an information storage device that uses magnetic media to store data. refer to Figure 1a , the existing typical disk drive (Disk Drive) includes a disk and a drive arm for driving the head gimbal assembly 277 (Head Gimbal Assembly, HGA) (the head gimbal assembly 277 is provided with a suspension member with a magnetic head 203 (not marked)). Wherein, the magnetic disk is mounted on a spindle motor for driving the magnetic disk to rotate, and a Voice-Coil Motor (Voice-Coil Motor, VCM) is used to control the movement of the driving arm, thereby controlling the magnetic head 203 to move from one magnetic track to the other on the surface of the magnetic disk. next track to read or write data from the disk. [0003] However, during the travel of the magnetic head 203, due to the in...
Claims
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IPC IPC(8): G11B5/596G11B21/10
Inventor 姚明高白石一雅
Owner SAE MAGNETICS (HK) LTD