Through-Hole Filter Structure for Strength and Stress Relaxation
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Solution Overview
Problem
Existing filters face challenges in improving strength, particularly in areas where support portions are provided, leading to difficulty in stress relaxation when external forces are applied.
Innovation Solution
A filter design featuring a filter base portion with through-holes and a support portion having protruding portions, where a clearance is formed between the base and support portions, allowing for deformation and stress relaxation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a support portion is provided in the filter to improve strength, then the filter becomes more rigid, but stress relaxation capability deteriorates
Solution Approach 1:
The support portion is divided into multiple protruding portions that are segmented and distributed within the through-holes. This segmentation allows the support structure to provide strength while maintaining flexibility for stress relaxation, as each protruding portion can independently deform to accommodate stress variations.
Solution Approach 2:
The inner wall of the through-hole is designed with a tapered shape that is different from the outer wall, creating local quality variation. The first opening is larger than the second opening, providing a clearance space that enables local deformation for stress relaxation while the protruding portions provide localized support strength.
2Strength
If the filter base portion is made more rigid to improve strength, then structural integrity improves, but deformation capability under stress deteriorates
Solution Approach 1:
The filter base portion incorporates a dynamic clearance space between the inner and outer walls of the through-holes. This clearance allows the structure to adapt dynamically to applied stresses by deforming within the available space, while the protruding portions maintain structural integrity during this deformation process.
Solution Approach 2:
The protruding portions are nested within the through-holes of the filter base portion. This nesting arrangement allows the support elements to be integrated within the filtering structure, providing strength enhancement while the clearance between nested components enables deformation capability.
Data Source
AI summary
A filter that includes: a filter base portion having a first main surface and a second main surface, the filter base portion defining a plurality of through-holes connecting the first main surface and the second main surface via an inner wall extending from the second main surface toward the first main surface; and a support portion that has a plurality of protruding portions located in respective through-holes of the plurality of through-holes and disposed on the second main surface of the filter base portion, the plurality of protruding portions having an outer wall in contact with the inner wall of the filter base portion, wherein a first opening on the first main surface side of the filter base portion is larger than a second opening on the second main surface side of the filter base portion, and there is a clearance between the filter base portion and the support portion.