Acoustic Device Waterproof Membrane Pressure Buffering

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Solution Overview

Problem

Conventional acoustic devices, such as loudspeakers, face challenges in maintaining water resistance and acoustic performance under varying pressure conditions, particularly when submerged in water or exposed to pressure changes, which can lead to mechanical fatigue and damage to the waterproof vibrating membrane.

Innovation Solution

The acoustic device incorporates a waterproof vibrating membrane with convex and concave portions, paired with a magnetic component and a protection panel featuring corresponding pressure buffering portions, which match the membrane's shape to absorb and distribute pressure evenly, enhancing the device's pressure resistance and water resistance without compromising acoustic properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a waterproof vibrating membrane is used in an acoustic device, then water resistance is improved, but the membrane becomes vulnerable to pressure changes causing mechanical fatigue and damage

Engineering Contradiction:
Improvewater resistanceVSAvoidpressure resistance
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The magnetic component is designed with a pressure buffering portion that protrudes toward the waterproof vibrating membrane in advance, creating a cushioning structure that absorbs pressure changes before they reach the membrane, preventing mechanical fatigue and damage while maintaining water resistance

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Strength

If the waterproof vibrating membrane is made convex or concave to improve pressure resistance, then acoustic performance may be compromised

Engineering Contradiction:
Improvepressure resistanceVSAvoidacoustic performance
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The pressure buffering portion of the magnetic component acts as an intermediary between the waterproof vibrating membrane and the external pressure environment. It absorbs pressure changes while allowing the membrane to maintain its optimal acoustic shape, thus protecting acoustic performance while improving pressure resistance

Inventive Principle:
Principle #24Intermediary (Mediator)

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 configuration effectively prevents damage to the waterproof vibrating membrane from pressure changes, improving its pressure resistance and water resistance, allowing the device to function effectively in reinforced waterproof environments without sacrificing acoustic performance.

Implementation Method 1

the magnetic component includes a concave pressure buffering portion corresponding to a shape of the convex portion of the waterproof vibrating membrane wherein the concave pressure buffering portion is recessed toward a side opposing to a side on which the waterproof vibrating membrane is located

Methodology Applied
Scientific EffectPressure distribution:

Data Source

PatentUS10310567B2Acoustic device
Publication Date: 2019.06.04 CASIO COMPUTER CO LTD
  • US10310567B2 patent drawing
  • US10310567B2 patent drawing
  • US10310567B2 patent drawing

AI summary

An acoustic device includes a waterproof vibrating membrane and a magnetic component disposed below the waterproof vibrating membrane. The waterproof vibrating membrane includes a convex portion which protrudes toward a position of the magnetic component, or a concave portion which is recessed opposing to a position of the magnetic component. The magnetic component includes a concave pressure buffering portion corresponding to a shape of the convex portion of the waterproof vibrating membrane wherein the concave pressure buffering portion is recessed toward a side opposing to a side on which the waterproof vibrating membrane is located, or a convex pressure buffering portion corresponding to a shape of the concave portion of the waterproof vibrating membrane wherein the convex pressure buffering portion protrudes toward a side on which the waterproof vibrating membrane is located.