Waterproof Microphone Membrane Deformation Control

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Solution Overview

Problem

Conventional waterproof microphones fail to prevent extreme resilient deformations of waterproof vibration membranes due to external and internal pressure changes, which can lead to rupture or plastic deformation.

Innovation Solution

Incorporating outward and inward resilient deformation inhibiting members on the outer and inner sides of the waterproof vibration membrane with spaces between them, respectively, to prevent extreme deformations caused by pressure changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If waterproof vibration membranes are provided to cover the openings of the housing, then the microphone element is waterproofed and functions as a waterproof type, but the waterproof vibration membranes are resiliently deformed toward the inside by an extreme amount under extreme water pressure

Engineering Contradiction:

Improvewaterproof functionalityVSAvoidmembrane deformation

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The stainless mesh is pre-installed on the inner side of the waterproof vibration membrane to provide preliminary support and resistance against inward deformation. This preventive structure opposes the water pressure before extreme deformation can occur, maintaining membrane stability while preserving waterproof functionality.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The stainless mesh acts as an intermediary structure between the waterproof vibration membrane and the internal components. It provides mechanical support to the membrane under water pressure, distributing the stress and preventing both extreme inward deformation and outward resilient deformation, thus protecting the membrane while maintaining waterproof integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Strength

If stainless meshes are provided on the inner sides of the waterproof vibration membranes with spaces therebetween, then extreme inward resilient deformations are inhibited and the membranes are prevented from being ruptured, but outward resilient deformations are not prevented

Engineering Contradiction:

Improveresistance to inward deformationVSAvoidprotection against bidirectional deformation

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The solution segments the protection function into two distinct components: the stainless mesh for inward deformation protection and the outward resilient deformation inhibiting member for outward deformation protection. This segmentation allows each component to be optimized for its specific directional protection function, ensuring comprehensive bidirectional protection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of relying on a single structure to handle both inward and outward deformations, the invention introduces a separate inhibiting member on the outer side that functions in the opposite direction to the stainless mesh. This inverted approach provides balanced bidirectional protection by addressing each deformation direction with a dedicated structure.

Inventive Principle:

Principle #13The other way round (Inversion)

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

Effectively inhibits both inward and outward resilient deformations of the waterproof vibration membrane, preventing rupture or plastic deformation under extreme water pressure or internal pressure changes, ensuring the microphone's waterproof functionality.

Implementation Method 1

the waterproof vibration membranes are vibrated according to the sound pressure level of the transmitted sound

Methodology Applied

Scientific EffectSound pressure vibration: Sound

Implementation Method 2

the waterproof vibration membranes tend to be resiliently deformed toward the inside by an extreme amount

Methodology Applied

Scientific EffectResilient deformation: Elasticity

Data Source

PatentUS9510091B2Microphone

Publication Date: 2016.11.29 CASIO COMPUTER CO LTD

AI summary

When external pressure extremely increases, a waterproof vibration membrane tends to be resiliently deformed extremely toward the inside. However, an inward resilient deformation inhibiting member provided on the inner side of the waterproof vibration membrane with a space therebetween inhibits this extreme inward resilient deformation of the waterproof vibration membrane, whereby the waterproof vibration membrane is prevented from being ruptured or plastically deformed. On the other hand, when the internal pressure extremely increases, the waterproof vibration membrane tends to be resiliently deformed extremely toward the outside. However, an outward resilient deformation inhibiting member provided on the outer side of the waterproof vibration membrane with a space therebetween inhibits this extreme outward resilient deformation of the waterproof vibration membrane, whereby the waterproof vibration membrane is prevented from being ruptured or plastically deformed.