Liquid-Resistant Acoustic Gasket and Membrane Assembly
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Solution Overview
Problem
Electronic devices with acoustic components are vulnerable to liquid ingress due to exposure, which can lead to damage and impaired operation, and existing solutions fail to effectively isolate the liquid-resistant membrane from non-uniform compressive distributions caused by gasket compression, affecting both sealing and acoustic performance.
Innovation Solution
A liquid-resistant acoustic assembly is designed with a gasket compressed between the acoustic device and the housing, and a liquid-resistant membrane positioned between the housing and the acoustic device, isolated from the gasket's compressive force, using stiffeners or rings to uniformly transfer force and prevent non-uniform compression, allowing the membrane to remain uncompressed or compressed differently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gasket is compressed between the acoustic device and the housing to provide sealing, then liquid resistance is improved, but the membrane is subjected to non-uniform compressive distribution which degrades acoustic performance
Solution Approach 1:
The patent divides the sealing and acoustic functions into separate components: the gasket handles liquid sealing through compression, while the membrane handles acoustic transmission. By positioning the membrane separately from the gasket compression zone, the patent segments the functional responsibilities, allowing each component to optimize its performance without interfering with the other.
Solution Approach 2:
The patent introduces an intermediary structure (such as a shelf or gap) between the gasket and the membrane. This intermediary absorbs or redirects the compressive forces, preventing them from being transmitted non-uniformly to the membrane. The intermediary acts as a buffer that decouples the mechanical sealing function from the acoustic transmission function.
2Reliability
If the membrane is positioned between the gasket and the acoustic device to provide liquid resistance, then sealing is improved, but the membrane is compressed by the gasket compression which degrades sound transmission
Solution Approach 1:
The patent extracts the membrane from the compression path of the gasket. Instead of positioning the membrane directly between the gasket and the acoustic device where it would be subjected to compression, the patent relocates the membrane to a position where it is isolated from the compressive forces. This extraction allows the membrane to maintain its acoustic transmission properties while the gasket continues to provide sealing.
Solution Approach 2:
The patent repositions the membrane in a different spatial dimension relative to the gasket compression. By placing the membrane on a shelf or within a gap that is dimensionally separated from the compression zone, the membrane operates in a different dimensional space where it is not subjected to the compressive forces applied to the gasket.
3Reliability
If the membrane is compressed uniformly to maintain sealing, then liquid resistance is improved, but acoustic performance is degraded due to membrane deformation
Solution Approach 1:
The patent applies different mechanical conditions to different parts of the membrane assembly. The gasket is allowed to be compressed for sealing, while the membrane is positioned in a region where it experiences minimal or uniform compression. This local differentiation of mechanical conditions allows each component to operate in its optimal state: the gasket for sealing and the membrane for acoustic transmission.
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 prevents liquid ingress while maintaining acoustic performance by isolating the liquid-resistant membrane from non-uniform compressive distributions, ensuring effective sealing and sound transmission.
Implementation Method 1
a gasket compressed between the acoustic device and the housing
Implementation Method 2
a membrane located between the housing and the acoustic device that resists passage of liquid but allows passage of air
Implementation Method 3
using stiffeners or rings to uniformly transfer force and prevent non-uniform compression
Implementation Method 4
sound waves to pass to and/or from an acoustic device
Data Source
AI summary
A liquid-resistant acoustic assembly for an electronic device includes an acoustic device positioned in a housing, a gasket compressed between the acoustic device and the housing, and a liquid-resistant membrane. The liquid-resistant membrane is disposed such that it is isolated from a non-uniform compressive distribution resulting from compression of the gasket. The liquid-resistant membrane may be uncompressed by compression of the gasket or compressed by a different compressive force than the gasket. For example, the liquid-resistant membrane may not be positioned between the gasket and the acoustic device, may be separated from the gasket, may be mounted to a shelf of the gasket or within a gap defined by the gasket, mounted to a stiffener positioned within the gasket, and mounted using other similar configurations.