Disk Device Ramp Support Mechanism for Head Separation
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Solution Overview
Problem
Existing disk devices face challenges in reliably supporting the suspension when the magnetic head moves from the load position to the unload position, as the suspension may deviate from the position where it can be supported by the ramp, leading to potential misalignment and reduced storage capacity.
Innovation Solution
The disk device incorporates a ramp with a first and second support mechanism, where the second support is positioned farther from the first support and the second rotation axis, allowing the magnetic head to be separated from the recording surface at a greater distance, ensuring reliable support and preventing adherence to the recording surface during unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the ramp supports the suspension at a position closer to the first rotation axis, then the magnetic head can be separated farther from the recording surface, but the suspension may deviate from the support position during movement
Solution Approach 1:
The ramp is divided into multiple support portions: a first support portion and a second support portion positioned at different radial distances from the first rotation axis. This segmentation allows the suspension to be supported at different positions during different phases of movement, ensuring both reliable support and adequate separation distance.
Solution Approach 2:
The solution transitions from a single-point support to a multi-position support system along the radial dimension. By adding the second support portion at a different radial position, the system gains additional degrees of freedom in controlling the suspension's movement trajectory, allowing it to maintain both stability and separation distance.
2Length of moving object
If the second support is positioned farther from the first support, then the magnetic head separation distance increases, but the suspension may become unstable during transition
Solution Approach 1:
The first support portion is positioned to provide preliminary support to the suspension before it reaches the outer region. This preliminary support ensures the suspension is properly guided and stabilized during the transition phase, preventing instability even when the second support portion is positioned far away to maximize separation distance.
Solution Approach 2:
The first support portion acts as an intermediary element between the rotation axis and the second support portion. It provides intermediate stabilization during the suspension's movement, allowing the second support to be positioned farther away while maintaining overall system stability throughout the transition.
Data Source
AI summary
According to one embodiment, a disk device includes a recording medium, a magnetic head, a ramp, and an actuator. The recording medium has a recording surface and is rotatable around a first rotation axis. The actuator includes a first portion extending so as to be separated from a second rotation axis and separated from the recording surface as the distance from the second rotation axis increases, holds the magnetic head, and is rotatable around the second rotation axis. A first support is provided on the ramp, extends around the second rotation axis, and can support the first portion so that the magnetic head is separated from the recording surface. A second support is provided on the ramp, is located between the first rotation axis and the first support, is separated from the second rotation axis farther than the first support, and can support the first portion.