HDD Baseplate Recessed Region for Disk Shock Protection
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Solution Overview
Problem
Hard-disk drives (HDDs) face damage from mechanical shocks due to physical contact between the magnetic-recording disk and the baseplate, as the existing clearance is difficult to adjust without compromising durability.
Innovation Solution
A recessed region is introduced on the baseplate near the outer diameter of the magnetic-recording disk to increase clearance and minimize contact, potentially incorporating a non-data zone or dampening material to absorb impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the thickness of baseplate is reduced to provide additional clearance between baseplate and disk, then the clearance is improved, but the durability of baseplate is worsened
Solution Approach 1:
The baseplate surface is modified locally by creating a recessed region at specific locations where disk contact is most likely to occur during shock events. This localized modification provides additional clearance exactly where needed without reducing the overall baseplate thickness, thereby maintaining baseplate durability while preventing disk damage.
2Reliability
If the clearance between baseplate and disk is increased to prevent contact during shock, then the protection of disk is improved, but the structural integrity of baseplate is worsened
Solution Approach 1:
Rather than uniformly increasing clearance across the entire baseplate surface, recessed regions are created only at specific locations where disk contact is most likely to occur during shock events. This localized approach provides protection exactly where needed while maintaining the structural integrity and stiffness of the overall baseplate.
Solution Approach 2:
The baseplate surface is segmented into multiple recessed regions positioned at different locations based on shock analysis. These discrete recessed areas provide targeted protection without requiring a uniform reduction in baseplate thickness across the entire surface, thus preserving overall structural integrity.
3Reliability
If recessed region is added to baseplate to increase clearance, then the protection of disk is improved, but the manufacturing complexity is worsened
Solution Approach 1:
The formation of recessed regions is integrated into the existing baseplate manufacturing process. The recesses can be created using standard machining, molding, or stamping techniques that are already employed in baseplate production, allowing the protective feature to be added without requiring entirely new manufacturing equipment or processes.
Data Source
AI summary
Approaches for a hard-disk drive (HDD) baseplate comprising a recessed region that provides additional clearance for a disk. The protective enclosure of the HDD comprises a baseplate. The surface of the baseplate, which opposes a magnetic-recording disk, comprises a recessed region near the outer diameter (OD) of the magnetic-recording disk. The recessed region prevents the disk from being damaged through inadvertent physical contact with the baseplate, which may arise when the HDD receives a mechanical shock. The recessed region may be designed to minimize the damage to the disk if physical contact between the disk and the baseplate does occur. The recessed region may have a variety of shapes, such as a circular indentation or one or more non-contiguous regions in the baseplate where physical contact between the disk and the baseplate is deemed likely to occur.