Waterproof Membrane Design for Audio Ports
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing waterproof membranes for electronic devices face a trade-off between waterproofness and sound transmission characteristics, making it difficult to maintain performance when exposed to high water pressure, particularly in devices with audio functions.
Innovation Solution
A conversion element member with a waterproof membrane that has a specific non-joining portion design, where the membrane is joined to the outer surface of the conversion element with a spacing distance between 0.01 mm and X mm, allowing for enhanced waterproofness while minimizing the impact on sound transmission by limiting deformation to the elastic range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof membrane is attached to cover the external transmission port, then waterproofness is improved, but sound transmission characteristics deteriorate
Solution Approach 1:
The waterproof membrane is designed with different regions having different properties: a joining portion that adheres to the conversion element and a non-joining portion that remains spaced away. This local differentiation allows the membrane to provide waterproofing while maintaining sound transmission pathways through the non-joining region, resolving the contradiction between waterproofness and sound transmission characteristics
Solution Approach 2:
The waterproof membrane is segmented into distinct functional portions: a joining portion for securing the membrane to the conversion element and a non-joining portion that creates a spaced relationship. This segmentation enables the membrane to simultaneously achieve waterproof sealing at the boundaries while preserving acoustic properties in the central region
2Reliability
If waterproofness is enhanced by attaching a waterproof membrane, then resistance to water pressure is improved, but the membrane deforms under high water pressure affecting performance
Solution Approach 1:
The spaced relationship between the non-joining portion of the waterproof membrane and the outer surface of the conversion element creates a buffer zone that cushions the membrane against high water pressure. This pre-established spacing prevents excessive deformation by providing compliance space, allowing the membrane to absorb pressure variations without permanent deformation or performance degradation
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 solution effectively enhances the waterproofness of electronic devices while maintaining sound transmission characteristics, even under high water pressure, by controlling the deformation of the waterproof membrane within the elastic range, thus preventing permanent deformation and maintaining performance.
Implementation Method 1
a waterproof membrane preventing entry of water
Implementation Method 2
controlling the deformation of the waterproof membrane within the elastic range, thus preventing permanent deformation
Data Source
AI summary
The conversion element member of the present disclosure includes: a conversion element having an opening capable of functioning as a ventilation port and/or a sound-transmitting port; and a waterproof membrane. The conversion element has an outer surface provided with the opening. The waterproof membrane is joined, at a joining portion thereof, to the outer surface of the element so as to cover the opening, the joining portion having a shape surrounding the opening when viewed in a direction perpendicular to the outer surface. The waterproof membrane has a non-joining portion defined as a portion surrounded by the joining portion when viewed in the direction, the non-joining portion having a region overlapping the outer surface when viewed in the direction. A spacing distance D1 between the membrane and the outer surface in the region is 0.01 mm to X mm, where X represents, in an indentation test on the waterproof membrane.