Disk Device Damper on Inclined Load Beam Surface
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Solution Overview
Problem
The existing disk devices face challenges in positioning control of magnetic heads due to vibration of the load beam, leading to potential interference between dampers attached to head gimbal assemblies, which affects the accuracy and efficiency of data storage.
Innovation Solution
The design incorporates a damper configuration where the damper is attached to the load beam with specific dimensions and orientations, ensuring that the value of the distance between the damper's end and the axis of the through hole is 0.11 or less, preventing interference between the dampers of adjacent head gimbal assemblies and allowing for effective vibration attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dampers are attached to the load beam surfaces facing the other HGAs, then vibration attenuation is improved, but the dampers of the two HGAs attached to both sides of the arm approach and interfere with each other
Solution Approach 1:
The patent applies asymmetry by configuring the dampers with different lengths on opposite sides of the arm. Specifically, the first HGA has a damper with a first length, while the second HGA has a damper with a second length that is different from the first length. This asymmetric configuration ensures that the dampers do not interfere with each other while both effectively attenuating vibrations of their respective load beams.
2Object-affected harmful factors
If the distance between the damper's end and the axis of the through hole is reduced to 0.11 or less, then damper interference is prevented, but the configuration complexity increases
Solution Approach 1:
The patent applies parameter changes by precisely controlling the distance parameter between the damper's end and the axis of the through hole. The specification sets this distance to be 0.11 or less, which is a quantitative parameter adjustment that prevents damper interference while maintaining a relatively simple overall configuration. This parameter optimization allows the system to achieve non-interference without requiring complex structural modifications.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively prevents damper interference, reduces vibration of the load beam, and allows for a higher number of magnetic disks to be mounted, enhancing storage capacity and data storage accuracy.
Implementation Method 1
The damper works to attenuate the vibration of the load beam, if it occurs
Data Source
AI summary
According to one embodiment, a disk device includes an arm with a through hole, a base plate, a load beam, and a damper. The arm has a first surface and a second surface opposite the first surface. The base plate has a first protrusion in the through hole. The load beam is attached to the base plate and has a fourth surface and a fifth surface opposite the fourth surface. The first surface and the fourth surface faces one magnetic disk. The fifth surface is inclined so as to be closer to the one magnetic disk as is further away from the arm. The damper is attached to the fifth surface. A value obtained by dividing a first distance between the first surface and the second surface by a second distance between an end of the damper and an axis of the through hole is 0.11 or less.