Conductive Media Casing Lid for EMI Leakage Shielding
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Solution Overview
Problem
Existing electronic devices with removable storage media suffer from electromagnetic noise leakage through the insertion opening, which can affect the performance and communication speed.
Innovation Solution
A conductive casing and lid connected to a conductor with a larger surface area, such as a ground potential, form an electromagnetic shield, with the lid closing the insertion opening to prevent noise leakage, and a detection mechanism to ensure the lid is in the closed position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the lid is made conductive and connected to the casing to form an electromagnetic shield, then noise leakage is suppressed, but device complexity increases
Solution Approach 1:
The lid is electrically connected to the casing through a conductive structure, merging them into a unified electromagnetic shield. This integration allows the lid and casing to work together as a single shielding system, effectively blocking noise leakage from the storage medium without requiring separate shielding components.
Solution Approach 2:
The conductive lid serves multiple functions: it acts as a cover for the insertion opening, provides electromagnetic shielding when connected to the casing, and can detect insertion status through electrical connection. This multi-functionality reduces the need for additional components, addressing the complexity concern while maintaining noise suppression effectiveness.
2Object-affected harmful factors
If the lid is electrically connected to the casing to form an electromagnetic shield, then noise leakage is prevented, but manufacturing complexity increases
Solution Approach 1:
The lid and casing are designed as integrated conductive components that can be manufactured as a single piece or pre-assembled unit. The conductive structure connecting the lid to the casing is built into the design, allowing for streamlined manufacturing processes rather than requiring post-assembly electrical connections.
Solution Approach 2:
Both the lid and casing are made from conductive materials with similar electrical properties, creating a homogeneous electromagnetic shield system. This material consistency simplifies manufacturing by allowing the use of similar fabrication techniques and materials for both components, reducing production complexity.
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 configuration effectively prevents electromagnetic noise leakage from the storage medium, maintaining device performance and communication speed by ensuring the lid is securely closed.
Implementation Method 1
the casing is electrically connected to a conductor having a surface area larger than that of the casing, and the lid is electrically connected to the casing when the lid is in the close position... the casing serves as an electromagnetic shield for the storage medium housed inside the casing... the lid serves as an electromagnetic shield for the storage medium housed inside the casing
Data Source
AI summary
To provide electronic device that can better prevent leakage of noise from storage medium housed inside casing. Electronic device includes casing configured to carry storage medium therein, casing having insertion opening for inserting storage medium, at least part of casing being conductive, and lid configured to take open position in which insertion opening is opened and close position in which insertion opening is closed, at least part of lid being conductive, wherein casing is electrically connected to conductor having surface area larger than that of casing, and lid is electrically connected to casing when lid is in close position.