Suspensions, HGAs, and Disk Drive Units

Abstract

The invention discloses a cantilever. The cantilever includes a flexure, a load bar, and an anti-deformation plate between the flexure and load bar. The anti-deformation plate includes a supporting plate portion for supporting the magnetic head through the magnetic head mounting portion and a pair of beam portions. The beam portions each have at least one bend. The bent portion is bent in a direction substantially perpendicular to the supporting plate portion to shape the deformation-resistant plate into a three-dimensional structure. The three-dimensional structure of the support plate is beneficial to resist structural deformation, so that the cantilever has stable lateral rigidity, longitudinal rigidity and relatively small deflection rigidity. This not only makes the HGA have good static performance and improved anti-shock performance, but also helps the head to rotate more easily and have a desired displacement when the micro-actuator is driven. The invention also discloses the magnetic head gimbal assembly with the suspension and its disk drive unit.

Description

technical field [0001] The invention relates to an information recording disk drive unit, in particular to a suspension member of a head gimbal assembly (HGA, head gimbal assembly) with a micro-actuator, a head gimbal assembly and a disk drive unit. Background technique [0002] A common type of information storage device is a magnetic disk drive system that uses magnetic media to store data and a moveable read / write head positioned over the magnetic media to selectively read data from and write data to the magnetic media superior. [0003] Consumers have always expected increasing storage capacity from such disk drive systems, while at the same time expecting faster and more accurate read and write speeds. Therefore, disk manufacturers have been devoting themselves to developing disk systems with higher storage capacity, such as increasing the density of magnetic tracks by reducing the track width or track spacing on the disk, thereby indirectly increasing the storage capa...

AI Technical Summary

Problems solved by technology

In addition, since the magnetic head 103 is partially installed on the magnetic head supporting part 112, and the magnetic head supporting part 112 is connected with the metal substrate 113 through the electrical trace of the flexible member 112, the static posture of the magnetic head 113 is as follows: Static attitude (PSA, pitchstatic attitude) or vertical static attitude (RSA, roll static attitude) is unstable and difficult to control, which will lead to unstable performance of the head gimbal assembly and seriously affect the dynamic performance of the head gimbal assembly. The situation is especially obvious when vibration or shock occurs or during production or operation

Finally, the above-mentioned structure makes the whole head gimbal assembly have poor anti-vibration performance

When vibration and impact events occur, such as tilted fall impact or operation impact, the piezoelectric element of the suspension member 110 or the piezoelectric microactuator 207 may be damaged

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