Loudspeaker Front Cover Enhanced Chamber Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional speakers face challenges in generating desired acoustic characteristics and sound volume in confined spaces, such as vehicles and handheld devices, due to limited interior space and acoustic absorption issues, leading to resonance, phase deviations, and reduced sound quality and volume.
Innovation Solution
A loudspeaker apparatus with a front cover forming an enhanced chamber using elastic spacers and a diaphragm to improve sound quality and increase volume by redirecting acoustic waves, eliminating the need for a rear cabinet and reducing dust ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional speaker with rear cabinet is used, then sound volume and acoustic quality are improved, but device size and structural complexity increase
Solution Approach 1:
The patent inverts the conventional speaker design by placing the resonant chamber in front of the speaker unit instead of at the rear. The front cover with diaphragm forms an enhanced chamber that interacts with acoustic waves generated by the speaker unit, eliminating the need for a rear cabinet while maintaining sound volume and quality.
Solution Approach 2:
The patent utilizes the front dimension of the speaker unit by creating a vertical enhanced chamber between the speaker unit and the front cover. This three-dimensional space arrangement allows the resonant chamber to function without increasing the horizontal footprint of the device.
2Power
If a conventional speaker with rear cabinet is used, then sound volume and acoustic quality are improved, but structural complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the front cover with the diaphragm structure, where the diaphragm serves dual functions as both the front cover component and the resonant chamber boundary. This integration eliminates separate rear cabinet structures and simplifies the overall speaker assembly.
Solution Approach 2:
The diaphragm in the front cover serves multiple functions: it forms the boundary of the enhanced chamber, acts as a resonant element, and replaces the traditional rear cabinet structure. This multi-functionality reduces the number of components and simplifies manufacturing.
3Volume of moving object
If speaker is installed in confined space with acoustic absorption, then device compactness is improved, but sound quality and volume deteriorate due to resonance and phase deviation
Solution Approach 1:
The patent changes the acoustic parameters by creating a controlled resonant chamber with specific volume and boundary conditions. The enhanced chamber formed by the front cover and diaphragm modifies the acoustic impedance and resonance characteristics, improving sound quality despite the compact size and surrounding acoustic absorption.
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 enhances sound quality and volume, eliminates broken sounds, and simplifies the speaker design, making it suitable for compact devices without compromising structural integrity or increasing production costs.
Implementation Method 1
The acoustic wave generated by the speaker is formed by vibration of a diaphragm after having received electronic signals that cause alteration of air pressure in the surrounding environment
Implementation Method 2
the platform space from the rear seat to rear glass can be used as a resonant chamber for the speaker installed on the platform behind the rear seat
Implementation Method 3
When the electric signal passes through the voice coil 140, a magnetic force alteration occurs that interacts with the magnetic field of the magnetic member 130. The voice coil 140 alters according to the electronic signal. And the magnetic member 130 is attracted or repulsed to drive the diaphragm 110 outwards or inwards
Data Source
AI summary
A loudspeaker apparatus includes a speaker unit and a front cover. The speaker unit generates acoustic waves according to an external electronic signal. The front cover located in front of the speaker unit includes a plurality of elastic spacers and a diaphragm, and the elastic spacers and the diaphragm form an enhanced chamber, such, that the acoustic waves generated by the speaker unit go through the enhance chamber, and then drives the diaphragm to generate the acoustic waves again.