Speaker Resilient Member Protects Sound-Absorbing Particles

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Solution Overview

Problem

Existing speakers filled with sound-absorbing particles are prone to damage and wear due to compression and friction during transportation, affecting their sound-absorbing effectiveness.

Innovation Solution

A speaker design featuring a housing with a filling cavity and a resilient member, such as foam, that can deform to maintain the volume of sound-absorbing particles and prevent movement and friction, with the resilient member sandwiched between the hole cover and the particles, and optionally bonded or integrally formed with the hole cover.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sound-absorbing particles are filled in the filling cavity to improve low-frequency performance, then the low-frequency performance is improved, but during transportation the particles are compressed and moved causing friction and wear that reduces effectiveness

Engineering Contradiction:

Improvesound-absorbing effectivenessVSAvoidparticle wear and damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A resilient member (such as a foam block) is pre-installed in the filling cavity to cushion and protect the sound-absorbing particles before transportation occurs. This resilient member absorbs compression forces and prevents direct contact between particles during bumps, thereby reducing wear and damage before the harmful effects can occur.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The resilient member acts as an intermediary element between the housing wall and the sound-absorbing particles. It mediates the mechanical stresses during transportation, distributing compression forces and preventing the particles from moving and rubbing against each other, thus protecting the particles while maintaining their sound-absorbing function.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If sound-absorbing particles are densely packed to maximize filling volume, then the low-frequency performance is improved, but the particles are more susceptible to compression damage during transportation

Engineering Contradiction:

Improvefilling volume of sound-absorbing particlesVSAvoidresistance to compression damage

Core Design Contradiction:

Quantity of substanceVSStrength

Solution Approach 1:

The resilient member is installed beforehand in the filling cavity to provide a cushioning effect that protects the densely packed sound-absorbing particles from compression damage during transportation, allowing maximum particle filling without compromising their structural integrity.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The system combines sound-absorbing particles with a resilient material (such as foam) to create a composite structure. The resilient material provides mechanical protection while the particles maintain their sound-absorbing function, achieving both high filling volume and resistance to compression damage.

Inventive Principle:

Principle #40Composite materials

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 resilient member effectively prevents the sound-absorbing particles from becoming loose and worn, maintaining their effectiveness by absorbing sound without compression-induced damage.

Implementation Method 1

The resilient member can deform in a height direction of the filling hole, and the resilient member is sandwiched in a compressed state between the hole cover and the sound-absorbing particles

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The resilient member effectively prevents the sound-absorbing particles from becoming loose and worn, maintaining their effectiveness by absorbing sound without compression-induced damage

Methodology Applied

Scientific EffectEnergy absorption through deformation: Viscoelasticity

Implementation Method 3

sound-absorbing particles filled in the filling cavity, so as to improve the low-frequency performance of the speaker

Methodology Applied

Scientific EffectAcoustic absorption: Acoustic Absorption

Data Source

PatentUS12120484B2Speaker

Publication Date: 2024.10.15 AAC MICROTECH (CHANGZHOU) CO LTD

AI summary

A speaker includes a housing having a receiving space, a speaker unit and a cavity received in the receiving space, sound-absorbing particles filled in the filling cavity, a filling hole opened in the housing and communicating with the filling cavity for filling the sound-absorbing particles into the filling cavity, a hole cover covering the filling hole and a resilient member filled in the filling hole. The resilient member can deform in the height direction of the filling hole, and the resilient member is sandwiched in a compressed state between the hole cover and the sound-absorbing particles. Compared with the related art, the sound-absorbing particles of the speaker disclosed by the present disclosure are not easily damaged.