Conductive Gasket for Hard Disk Drive Shielding
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Solution Overview
Problem
Electromagnetic radiation degrades the performance of electronic devices like hard disk drives by interfering with magnetoresistive elements of read/write heads, primarily due to leakage through gaps between the base deck and cover.
Innovation Solution
Incorporating a conductive layer between the cover and base of the hard disk drive enclosure to block electromagnetic radiation, combined with a gasket for sealing, where the conductive layer is positioned to intercept radiation before it reaches the internal cavity, and is formulated with materials like silver, copper, or gold for effective radiation blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conductive layer is added to block electromagnetic radiation, then radiation shielding effectiveness is improved, but device complexity increases
Solution Approach 1:
The conductive layer is integrated into the gasket structure, merging the sealing function and electromagnetic shielding function into a single component. The gasket includes both the sealing portion that creates the seal between cover and base, and the conductive layer portion that blocks electromagnetic radiation, eliminating the need for separate shielding components.
Solution Approach 2:
The gasket is designed to perform multiple functions simultaneously: it provides mechanical sealing to prevent contamination and integrates a conductive layer to provide electromagnetic radiation shielding. This multi-functional design reduces the overall number of components needed in the enclosure assembly.
2Object-affected harmful factors
If a conductive layer is positioned between cover and base, then radiation blocking capability is improved, but manufacturing complexity increases
Solution Approach 1:
The conductive layer is combined with the gasket as an integrated component, where the conductive layer is positioned within or on the gasket structure. This integration allows the sealing and shielding functions to be achieved in a single assembly step, reducing manufacturing complexity compared to installing separate shielding layers.
3Reliability
If a gasket is added to create a seal, then sealing capability is improved, but device complexity increases
Solution Approach 1:
The sealing function and electromagnetic shielding function are merged into a single gasket component. The gasket includes a sealing portion for creating the seal and a conductive layer portion for radiation blocking, reducing the total component count while maintaining both sealing reliability and radiation shielding effectiveness.
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 conductive layer effectively reduces electromagnetic radiation entering the enclosure, enhancing the sealing capability and preventing interference with read/write heads, thereby maintaining data integrity and extending the lifespan of the hard disk drive.
Implementation Method 1
a conductive layer positioned between the cover and the base and arranged to reduce radiation from entering the enclosure
Data Source
AI summary
An electronic device which includes a cover, a base coupled to the cover to create an enclosure, a conductive layer positioned between the cover and the base and arranged to reduce radiation from entering the enclosure, and a gasket positioned between the cover and the base to create a seal and positioned between the conductive layer and the enclosure.