Elastic Composite Filter for Noise Attenuation
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Solution Overview
Problem
Existing elastic electrical connection terminals fail to effectively remove noise such as static electricity and electromagnetic interference due to lack of elasticity and flexibility, making them unsuitable for installation between conductive objects and prone to damage from external shocks.
Innovation Solution
A composite filter with a functional material layer, electrode patterns, and a conductive elastic member that provides elasticity and mechanical coupling, featuring internal electrodes and an electrostatic discharging part for effective noise attenuation and easy installation, while maintaining capacitance stability and allowing for surface mounting and soldering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a typical capacitor is installed at a printed circuit board to remove noise, then noise removal function is achieved, but it is difficult to be installed between conductive objects and runs a high risk of being damaged by external shock due to lack of elasticity
Solution Approach 1:
The patent employs an elastic body as the housing structure that encloses the capacitor, allowing the entire assembly to be flexibly installed between conductive objects while protecting the internal capacitor from external shocks. The elastic body deforms under compression and returns to its original shape, providing both mechanical protection and installation flexibility.
Solution Approach 2:
The patent combines the capacitor with the elastic housing into a single integrated component. The capacitor is disposed inside the elastic body, creating a unified structure that functions both as an electrical component for noise removal and as a mechanically resilient element that can be installed between conductive objects without risk of damage.
2Adaptability or versatility
If elastic electrical connection terminals are used to connect conductive objects, then elasticity and electrical connection are achieved, but they have no functions of removing incoming noise
Solution Approach 1:
The patent creates a multi-functional component where the elastic body serves multiple purposes: it provides mechanical elasticity for connection between conductive objects, houses and protects a capacitor for noise removal, and maintains electrical connectivity. This single component replaces what would otherwise require separate elastic connectors and capacitors, reducing overall system complexity despite the enhanced functionality.
Solution Approach 2:
The capacitor is nested inside the elastic body housing. This nested configuration allows the capacitor to be protected and integrated within the elastic structure, enabling the elastic component to perform both mechanical connection and electrical noise filtering functions without requiring additional external components or complex assembly.
3Length of moving object
If the distance between electrodes is increased to provide long working distance, then dimension tolerance acceptance is improved, but capacitance value decreases
Solution Approach 1:
The patent employs a dielectric member with high dielectric properties positioned between the electrodes. This dielectric material has a high relative permittivity that compensates for the increased distance between electrodes, maintaining the capacitance value despite the larger working distance. The composite structure of electrodes, dielectric member, and elastic body enables both long working distance and adequate capacitance.
Solution Approach 2:
The patent changes the dielectric parameter (relative permittivity) by introducing a dielectric member with high dielectric properties between the electrodes. This parameter change compensates for the increased electrode separation distance, maintaining the capacitance value C = ε₀εᵣA/d by increasing εᵣ to offset the increase in d, thus preserving reliability while achieving long working distance.
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 composite filter effectively attenuates electric shock and noise by providing a long working distance, good elasticity, and stable capacitance, enabling easy surface mounting and internal discharging, while preventing electric shock and noise through the ground, even when pressed by objects.
Implementation Method 1
a conductive elastic member adhered onto the top electrode pattern, wherein the elastic member is coupled electrically and mechanically to the top electrode pattern to be used as an electrode, and the elastic member is in direct contact with a conductive object to provide elasticity
Implementation Method 2
allowing functionality, allowing smooth internal discharging and removing noise such as static electricity
Data Source
AI summary
Disclosed is a technology that enables an elastic composite filter to have a capacitor to remove noise. The elastic composite includes a functional material layer; electrode patterns disposed on top and bottom surfaces of the material layer, respectively; and a conductive elastic member adhered onto the top electrode pattern, wherein the elastic member is coupled electrically and mechanically to the top electrode pattern to be used as an electrode, and the elastic member is in direct contact with a conductive object to provide elasticity.