Cantilever member, magnetic head tab combination and disk drive unit

Abstract

The invention discloses a cantilever member which comprises a flexible member, a load bar and a deformation resistant plate which is arranged between the flexible member and the load bar. The deformation resistant plate comprises a support plate part for supporting a magnetic head by a magnetic head mounting part, and a pair of cross beam parts. The cross beam parts respectively comprise at least one bending part. The bending part bends towards a direction approximately vertical to the support plate part so that the deformation resistant plate is formed into a 3D structure. The 3D structure of the support plate part benefits deformation resistance of the structure so that the cantilever member has stable transverse rigidity, longitudinal rigidity and small deflection rigidity, which not only causes good static property and improved shockproof property of a folded piece set of the magnetic head, but also helps the magnetic head to rotate more easily with the expected displacement when a microactuator is driven. The invention also discloses a folded piece set of the magnetic head with the cantilever member and a disc 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 electric trace of the flexible member 112, the static posture of the magnetic head 113 is as follows: The lateral static attitude (PSA, pitchstatic attitude) or longitudinal 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, which This situation is especially obvious when vibration or impact 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

Images