Stretchable Surface Mount Gasket for Tolerance-Adaptive EMI Shielding
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Solution Overview
Problem
Electromagnetic waves generated from electronic components in devices can interfere with surrounding devices and affect human health, necessitating effective electromagnetic shielding solutions, particularly in smaller electronic devices where traditional gaskets may not adequately address these issues.
Innovation Solution
A stretchable surface mount gasket comprising an upper and lower plate connected by deformable connection members made of elastic material, with conductive coating layers and a double-sided tape for stable contact, allowing adjustment in length to accommodate varying distances between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional rigid gaskets are used for electromagnetic shielding, then shielding effectiveness is maintained, but adaptability to varying distances and design tolerances deteriorates
Solution Approach 1:
The gasket incorporates deformable connection members that can dynamically adjust their length and shape to accommodate varying distances between components. These connection members include bent portions and inclined sections that allow the gasket to flex and adapt to different spatial configurations while maintaining continuous contact with both the upper and lower plates, thus preserving shielding effectiveness across different assembly tolerances.
Solution Approach 2:
The gasket utilizes a flexible structure with thin plate-like connection members that can bend and deform elastically. These connection members are configured with bent portions and inclined sections that enable the gasket to conform to varying distances between electromagnetic shielding components while maintaining continuous shielding coverage, resolving the contradiction between flexibility and shielding reliability.
2Adaptability or versatility
If fixed-length gaskets are used, then manufacturing precision is improved, but adaptability to design tolerances deteriorates
Solution Approach 1:
The connection members are designed with bent portions and inclined sections that provide dynamic length adjustment capability. This allows the gasket to accommodate variations in assembly distance and design tolerances without requiring high-precision manufacturing of each individual component's length, as the flexible structure self-adjusts to the actual spacing between components.
Solution Approach 2:
The gasket employs connection members whose effective length and shape parameters can change within certain ranges through elastic deformation. This parameter variability allows the gasket to adapt to different design tolerances and assembly conditions while maintaining consistent shielding performance, reducing the need for extremely precise manufacturing controls.
3Adaptability or versatility
If stretchable connection members are used to increase adaptability, then adaptability to varying distances is improved, but structural complexity increases
Solution Approach 1:
The gasket is divided into distinct components: upper plate, lower plate, and multiple connection members. Each connection member is further segmented into straight portions and bent portions, allowing independent deformation of specific segments while maintaining overall structural simplicity. This segmentation enables length adjustment without requiring complex mechanisms throughout the entire gasket structure.
Solution Approach 2:
The connection members are designed as thin, flexible plate structures with simple bent geometries rather than complex mechanisms. This approach achieves length adjustability and adaptability through simple elastic deformation of thin flexible elements, avoiding the need for complex joints, actuators, or multi-component assemblies that would increase device 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 gasket effectively shields electromagnetic interference and transfers heat while maintaining contact with components, regardless of design tolerances, enhancing device performance and safety.
Implementation Method 1
a plurality of connection members comprising a deformable material connecting the upper plate and the lower plate
Implementation Method 2
A conductive coating layer may be formed on an outer surface of the sponge
Implementation Method 3
electromagnetic shielding gaskets are used... to block external radiation of electromagnetic waves generated from various electronic components
Data Source
AI summary
A surface mount gasket 1 includes an upper plate; a lower plate arranged below the upper plate; and a plurality of connection members comprising a deformable material connecting the upper plate and the lower plate. One end of each of the plurality of connection members is connected to an edge of the upper plate, and another end thereof is connected to an edge of the lower plate. The plurality of connection members may be evenly spaced along the edges of the upper plate and of the lower plate.