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Piezoelectric drive, and disk device

A piezoelectric driver and piezoelectric body technology, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric devices/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, etc., can Solve the problems of large-scale circuit structure, difficult to apply, complex structure, etc.

Inactive Publication Date: 2004-05-19
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, not only the structure is complicated, but also the scale of the circuit structure is large, especially in small magnetic disk devices, there is a problem that it is difficult to apply

Method used

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  • Piezoelectric drive, and disk device
  • Piezoelectric drive, and disk device
  • Piezoelectric drive, and disk device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Next, embodiments of the present invention will be described with reference to the drawings.

[0032] figure 1 is a perspective view of a magnetic head supporting mechanism equipped with an actuator element constituted by a piezoelectric actuator in an embodiment of the present invention, figure 2 is a perspective view showing the magnetic head support mechanism exploded, image 3 is a perspective view of a slider used in this head support mechanism.

[0033] exist Figure 1 to Figure 3 Among them, the magnetic head support mechanism 100 has, for example, a load beam 4 that supports the slider 2 on which the magnetic head 1 is mounted at the front end. The load beam 4 has a square base end portion 4a mounted on a head actuator arm (not shown), and the base end portion 4a is fixed to the substrate 5 by laser beam welding or the like. The substrate 5 is mounted on the above-mentioned head actuator arm. The load beam 4 is constituted by a neck portion 4b extending fo...

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PUM

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Abstract

Disclosed are a piezoelectric actuator with reinforced bending mode to suppress bending resonance caused by extension / contraction movements of the piezoelectric actuator and a disk drive using the same. A flexible substrate is separated by a slit. The first piezoelectric element unit (10a) and the second piezoelectric element unit (10b), both show extension / contraction displacement, are disposed on one of the slit-separated flexible substrates respectively. A coupling portion (40) is provided to couple said separated flexible substrates across the slit, wherein the coupling portion is provided at a position corresponding to an antinode of primary bending mode of the first and second piezoelectric element units being fixed in respective both ends.

Description

technical field [0001] The present invention relates to a piezoelectric actuator element formed of a piezoelectric material having a stretching property when a voltage is applied, and more particularly to a piezoelectric actuator used in a magnetic head position determining mechanism of a magnetic disk device, and the use of the piezoelectric actuator disk device. Background technique [0002] In recent years, magnetic disk devices have increased the linear recording density along the magnetic track through the improvement of the magnetic head element. Along with this, the improvement of the recording density perpendicular to the track direction becomes important, and it is necessary to achieve a finer track pitch. In order for the magnetic head to correctly follow a narrow track, it is necessary to have a mechanism that moves the magnetic head minutely. [0003] In a magnetic disc type information recording and reproducing apparatus, a magnetic head for recording and repr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B21/08G11B5/48G11B5/55G11B5/596G11B21/10G11B21/21H01L41/09H01L41/22H01L41/313
CPCH01L41/0986G11B5/4826G11B5/596H10N30/206G11B21/08
Inventor 桑岛秀树松冈薰
Owner TDK CORPARATION