Asymmetric HDD Frame Design for Multi-Directional Vibration Resistance
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Solution Overview
Problem
Existing HDD frames and vibration absorbing elements are ineffective in preventing resonance and fully absorbing vibrations across all directions, leading to reduced lifespan and potential damage in vibrational environments.
Innovation Solution
A HDD frame design with non-symmetric substrate fixing parts and varying lengths from the substrate center, inducing reactions in three dimensions to cancel vibrational frequencies and prevent resonance, incorporating vibration absorbing elements for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vibration absorbing elements are added at all fixing parts to absorb forces from all directions, then the anti-vibration effect is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The patent applies asymmetry by designing the HDD frame with non-uniform extending parts where the first extending part has a different length than the second extending part. This asymmetric configuration creates different reaction forces in different directions, enabling the frame to counteract vibrations from multiple directions without requiring additional vibration absorbing elements at each fixing part, thus resolving the contradiction between anti-vibration effectiveness and device complexity
2Ease of manufacture
If the HDD frame is designed with line symmetry, then the manufacturing and assembly are simplified, but the vibrational energy transfers symmetrically and resonance cannot be prevented
Solution Approach 1:
The patent deliberately breaks line symmetry by making the first extending part have a different length than the second extending part. This asymmetric design causes vibrational energy to transfer in an asymmetric manner, creating interfering reaction forces that destroy specific vibrational frequencies and prevent resonance, while still maintaining a relatively simple manufacturing process
3Reliability
If vibration absorbing elements are used at the fixing parts, then vibrations in one direction can be absorbed, but vibrations from other directions cannot be effectively countered
Solution Approach 1:
The asymmetric extending parts create different reaction force characteristics in different directions. The first extending part and second extending part have different lengths, which causes the frame to generate different reaction forces when subjected to vibrations from different directions, thereby achieving multi-directional vibration resistance without requiring separate vibration absorbing elements for each direction
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
The HDD frame effectively reduces vibrations and prevents resonance, ensuring the HDD operates reliably in vibrational environments by interfering with specific vibrational frequencies and distributing energy absorption across all directions.
Implementation Method 1
During the transfer process of vibrational energy, three-dimensional reactions are induced correspondingly to cancel the kinetic energy transfer. The reactions generated at the static balance point in the three dimensions interfere one another to destroy vibrational frequencies in specific directions.
Implementation Method 2
the disclosed hard disk drive is resistant to vibrations and suffers less from the resonance effect
Implementation Method 3
most of the vibration-proof designs use vibration absorbing elements at the parts that fix the HDD, thereby absorbing vibrations generated by external forces
Data Source
AI summary
A hard disk drive frame is provided. The distances from its hard disk drive fixing parts to the substrate center are not the same. During the process of vibrational energy transfer, three-dimensional reactions are induced correspondingly to cancel the kinetic energy transfer. The reactions generated at the static balance point in the three dimensions interfere one another to destroy vibrational frequencies in specific directions. Therefore, the disclosed hard disk drive is resistant to vibrations and suffers less from the resonance effect.