Internal Venting Mechanism for Audio System Non-Porous Membrane

Solution Overview

Problem

Portable electronic devices face challenges in maintaining the functionality of audio components, such as microphones and speakers, due to environmental factors like temperature and humidity changes, which can cause fluctuations in relative pressure and degrade performance.

Innovation Solution

The implementation of a venting element within the audio component that defines a fluid path extending from the housing's internal volume to the audio component's internal volume, using a combination of fluid impermeable and permeable layers to regulate pressure while attenuating acoustic waves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a non-porous membrane is used in the audio component, then protection against environmental factors is improved, but pressure regulation is worsened

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSStress or pressure

Solution Approach 1:

The venting element is divided into multiple layers including a fluid impermeable layer and a fluid permeable layer, each performing a specific function: the impermeable layer provides protection while the permeable layer enables pressure regulation through controlled fluid pathways

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The venting element acts as an intermediary component between the non-porous membrane and the external environment, providing a controlled fluid pathway that allows pressure equalization while maintaining the protective function of the membrane

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stress or pressure

If a venting element with fluid pathways is added, then pressure regulation is improved, but device complexity is worsened

Engineering Contradiction:

Core Design Contradiction:

Stress or pressureVSDevice complexity

Solution Approach 1:

The venting element combines multiple functions into a single integrated component: it provides pressure regulation through fluid pathways, acoustic wave attenuation through its layered structure, and protection for the audio component, eliminating the need for separate components for each function

Inventive Principle:

Principle #5Merging (Combining)

3Object-affected harmful factors

If the fluid path extends parallel to the fluid impermeable layer, then acoustic wave attenuation is improved, but manufacturing precision is worsened

Engineering Contradiction:

Core Design Contradiction:

Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The fluid permeable layer is positioned specifically adjacent to the fluid impermeable layer at targeted locations within the venting element, creating local fluid pathways that provide acoustic attenuation while allowing for manufacturing tolerances in other areas of the component

Inventive Principle:

Principle #3Local quality

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

This solution effectively regulates relative pressure within the audio component, preventing damage and ensuring optimal functionality, while also reducing the impact of acoustic waves on the microphone's performance.

Implementation Method 1

The venting element can define a fluid path extending from the first internal volume to the second internal volume and place the first internal volume in fluid communication with the second internal volume

Methodology Applied

Scientific EffectFluid communication:

Implementation Method 2

The fluid impermeable layer can define a channel extending from a central portion of the venting element to a periphery of the venting element

Methodology Applied

Scientific EffectChannel flow:

Implementation Method 3

The porous material can define the fluid path

Methodology Applied

Scientific EffectPorosity: Porosity

Implementation Method 4

The coil can at least partially define the fluid path

Methodology Applied

Scientific EffectTortuous flow path:

Implementation Method 5

The fluid permeable intermediate layer can place the first and second channels in fluid communication

Methodology Applied

Scientific EffectFluid permeability: Permeation

Data Source

PatentUS12212906B2Internal venting mechanisms for audio system with non-porous membrane

Publication Date: 2025.01.28

AI summary

An electronic device can include a housing, an audio component, and a gasket. The housing can define a first internal volume and the audio component can define a second internal volume. The audio component can include membrane and a venting element having a fluid impermeable layer. The venting element can define a fluid path placing the first internal volume and the second internal volume in fluid communication. At least a portion of the fluid path can extend parallel to the fluid impermeable layer. The gasket can define a seal between the first internal volume and an ambient environment adjacent the housing.