Disk Apparatus Protective Cover With Recessed Shock Absorber
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Solution Overview
Problem
Existing protective covers in magnetic disk drives are inadequate in reducing impacts from the side of the housing, leading to insufficient protection against shocks and drops.
Innovation Solution
Incorporating a shock absorber sandwiched between a protective cover and the housing side surface, with a recess in the housing to accommodate part of the absorber, maintaining dimensional compliance with standards while enhancing impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover is added to the housing, then impact protection is improved, but the device complexity increases
Solution Approach 1:
The shock absorber is nested within a recess formed in the housing itself, rather than being attached externally. The recess is defined by the housing structure (side wall and bottom wall), creating an integrated cavity that houses the shock absorber material. This nesting approach provides impact protection while minimizing additional device complexity.
Solution Approach 2:
The shock absorber material is placed locally at the specific position where impact protection is most needed (the side surface of the housing). The recess is formed only at the required location rather than modifying the entire housing structure, allowing targeted impact protection with minimal structural changes.
2Reliability
If a shock absorber is added between the protective cover and housing, then impact resistance is improved, but the volume of the device increases
Solution Approach 1:
The shock absorber is nested within a recess that is formed by removing material from the housing, not by adding external volume. The recess creates an internal cavity that accommodates the shock absorber material while maintaining the external dimensions of the housing. This allows the device to gain impact resistance without increasing its overall volume.
Solution Approach 2:
Material is discarded (removed) from the housing to create the recess cavity, and this removed space is then recovered (utilized) to house the shock absorber material. This transformation of unused housing material into functional shock absorption space provides impact protection without volume increase.
3Reliability
If the housing structure is modified to include a recess, then shock absorption capability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The recess is formed locally at the specific position requiring shock absorption, rather than modifying the entire housing structure. This localized approach concentrates the manufacturing precision requirements to a small, well-defined area, making the precision requirements more manageable compared to global structural modifications.
Solution Approach 2:
The recess dimensions (depth, width, length) can be adjusted as parameters to optimize shock absorption capability while maintaining manufacturability. By controlling the volume and shape parameters of the recess, the design balances shock absorption performance with manufacturing precision capabilities.
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
Significantly reduces impact forces on the disk apparatus, preventing absorber deterioration and ensuring stable performance over time, while adhering to standard dimensions.
Implementation Method 1
a shock absorber sandwiched between the side plate and the one side surface of the base
Data Source
AI summary
A disk apparatus includes a housing including a base, the base including a bottom wall and a frame-like side wall standing upright along peripheral edges of the bottom wall, and a top cover joined to the base, a rotatable disk-shaped recording medium disposed in the housing, a protective cover including a top plate secured to the top cover and a side plate facing one side surface of the base, and a shock absorber sandwiched between the side plate and the one side surface of the base.