Waterproof Sound-Transmitting Sheet With Pressure Equalization Groove
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Solution Overview
Problem
Waterproof sound-transmitting sheets used in mobile electronic devices face challenges in maintaining pressure resistance and sound transmission efficiency, as they can be damaged by external pressure due to inability to release internal air, leading to increased pressure and reduced resilience.
Innovation Solution
A waterproof sound-transmitting sheet with a communication groove in the second adhesive layer allows air to flow between the inner and outer spaces, preventing excessive pressure buildup and enhancing resilience by enabling air exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the waterproof sound-transmitting sheet is made completely waterproof and airtight, then the waterproof performance is improved, but the internal air cannot escape under external pressure causing the sheet to be damaged
Solution Approach 1:
The second adhesive layer is designed with a communication groove that creates a controlled porous structure. This groove allows air to pass through while maintaining the overall waterproof seal, enabling the sheet to equalize internal and external pressure without compromising waterproof performance. The groove acts as a pressure relief channel that prevents damage under external pressure.
Solution Approach 2:
The adhesive layer is segmented into different functional zones: the first adhesive layer provides complete sealing for waterproof performance, while the second adhesive layer contains the communication groove that creates a localized non-sealing path. This segmentation allows different parts of the adhesive structure to serve different functions - waterproofing and pressure equalization.
2Reliability
If the waterproof sound-transmitting sheet is made with high sealing performance, then the waterproof function is improved, but the resilience under pressure changes is reduced
Solution Approach 1:
The communication groove in the second adhesive layer creates a controlled porous structure that allows air to pass through while maintaining the overall waterproof seal. This enables the sheet to equalize internal and external pressure, improving resilience under pressure changes without compromising the waterproof function.
Solution Approach 2:
The communication groove acts as an intermediary element between the inner and outer spaces. It provides a controlled path for air to move between these spaces, mediating the pressure difference and allowing the sheet to adapt to pressure changes while maintaining waterproof integrity.
3Reliability
If the adhesive layers are made completely sealed, then the waterproof performance is improved, but the sound transmission efficiency is reduced due to pressure buildup
Solution Approach 1:
The communication groove creates a controlled porous structure in the second adhesive layer that allows air to pass through. This prevents pressure buildup that would otherwise hinder sound transmission, while the groove's design maintains the overall waterproof seal. The porous structure enables pressure equalization without creating pathways for water penetration.
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 sheet maintains pressure resistance up to 10 bar and returns to its original shape, improving sound transmission performance and durability by allowing air to escape and re-enter, thus preventing deformation and maintaining sound transmittance.
Implementation Method 1
the communication groove makes an inner space of the waterproof sound-transmitting layer surrounded by the waterproof sound-transmitting layer and the second adhesive layer and an outer space of the waterproof sound-transmitting sheet communicate with each other
Implementation Method 2
a waterproof sound-transmitting layer having a waterproof function and configured to transmit a sound
Data Source
AI summary
Disclosed is a waterproof sound-transmitting sheet. The waterproof sound-transmitting sheet comprises: a waterproof sound-transmitting layer having a waterproof function and configured to transmit sound; a first adhesive layer attached to the upper surface of the waterproof sound-transmitting layer; and a second adhesive layer attached to the lower surface, opposite the upper surface, of the waterproof sound-transmitting layer. The second adhesive layer includes a communication groove for communicating an inner space of the waterproof sound-transmitting layer and the space outside the waterproof sound-transmitting sheet, wherein in the inner space of the waterproof sound-transmitting layer is surrounded by the waterproof sound-transmitting layer and the second adhesive layer.