Head assembly and magnetic disk device

Abstract

Head assembly (2) and magnetic disk device, wherein reaction force induced by warpage of driving element during operation can be decreased and unnecessary resonance can be suppressed, in addition, displacement amount of head element can be efficiently obtained. A head assembly (2) includes first buffering part (55a) for connecting first reinforcing part (51a) and first displacement transferring part with flexural rigidity lower than those of first reinforcing part and first displacement transferring part; second buffering part (56a) for connecting second reinforcing part (52a) and main part of flexure with flexural rigidity lower than those of second reinforcing part and main part of flexure; third buffering part (55b) for connecting third reinforcing part (51b) and second displacement transferring part with flexural rigidity lower than those of third reinforcing part and second displacement transferring part; and fourth buffering part (56b) for connecting fourth reinforcing part (52b) and main part of flexure with flexural rigidity lower than those of fourth reinforcing part and main part of flexure.

Description

technical field [0001] The present invention relates to a magnetic head assembly and a magnetic disk device provided with a magnetic head rotation mechanism such as a microactuator in order to further increase the recording density of a magnetic disk device such as a storage device of a computer. Background technique [0002] In recent years, the recording density with respect to the magnetic disk provided in a magnetic disk device is advancing rapidly toward high density. A magnetic disk device is provided with a slider mounted with a magnetic head for recording and reproducing data on the magnetic disk, and the slider is supported by the magnetic head assembly. [0003] The head assembly is mounted on a head actuator arm, and the head actuator arm is rotatably configured by a voice coil motor (VCM). With this VCM, it is possible to control the positioning of the magnetic head mounted on the slider to an arbitrary position on the magnetic disk. [0004] However, in order ...

AI Technical Summary

Problems solved by technology

[0012] On the other hand, in Patent Document 2, the inertial mass of the rotating part is set to the minimum by matching the center of gravity of the universal joint part including the slider with the fulcrum protrusion that becomes the center of rotation by the balance weight, and the reaction of the rotating part Unnecessary vibration of the load beam is suppressed by not exciting the natural frequency of the load beam. However, the suppression of unnecessary resonance of the load beam due to the reaction force of the warp of the drive element is the same as in Patent Document 1. there is room for improvement

Images