Flexible Plate Speaker Box for Distortion Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing speaker boxes in portable devices suffer from high frequency distortion due to rigid materials, poor buffering ability, and inadequate sealing efficiency, particularly when subjected to mechanical stress and manual assembly challenges.
Innovation Solution
A speaker box design featuring an upper cover with a flexible plate made of materials like TPE, TPU, or silica, which includes a sealing ring and extending portions to enhance stability and acoustic performance by matching resonance frequencies and improving sealing through elastic abutment and secure fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid plastic or metal plate is used for the upper cover, then structural strength is improved, but high frequency distortion occurs in the front sound cavity
Solution Approach 1:
The patent applies local quality by using flexible material specifically for the plate portion that interacts with the sound cavity, while other parts of the upper cover can maintain rigid structure for strength. This localized application of flexibility reduces high frequency distortion without compromising overall structural integrity.
Solution Approach 2:
The patent changes the material parameter from rigid to flexible for the plate portion, which alters the resonance characteristics and reduces high frequency distortion. This parameter change allows the plate to better isolate vibrations while maintaining structural function.
2Ease of manufacture
If rigid plastic is used for the supporting wall, then manufacturing ease is improved, but buffering ability and stability during dropping deteriorate
Solution Approach 1:
The patent changes the material parameter from rigid to flexible for the supporting wall, which improves buffering ability during dropping while maintaining ease of manufacture through injection molding of flexible materials. This parameter change enhances reliability without significantly complicating the manufacturing process.
Solution Approach 2:
The patent may use composite materials or flexible polymers that combine manufacturing ease with improved shock absorption properties, allowing the supporting wall to both ease of manufacture and stability during dropping.
3Reliability
If sealing foam is attached to the sound passageway by manual work, then sealing effectiveness is improved, but assembly efficiency deteriorates
Solution Approach 1:
The patent applies self-service by designing a sealing mechanism that automatically seals the sound passageway during assembly without requiring manual attachment of sealing foam. The flexible plate or integrated sealing structure self-adjusts and seals effectively, eliminating manual work while maintaining sealing effectiveness.
Solution Approach 2:
The patent merges the sealing function with the structural plate or upper cover assembly, integrating the sealing mechanism into the main structure. This integration allows sealing to occur automatically during assembly, improving both effectiveness and efficiency simultaneously.
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 flexible plate design reduces distortion, enhances buffering ability, and improves sealing efficiency, resulting in improved acoustic performance and stability of the speaker box, especially during mechanical stress like dropping.
Implementation Method 1
The flexible plate is made of flexible material with a Young's modulus smaller than a Young's modulus of the upper cover 1
Implementation Method 2
improving sealing through elastic abutment and secure fastening
Data Source
AI summary
The present application discloses a speaker box. The speaker box includes a lower cover and an upper cover for forming an accommodation space for receiving a speaker. The speaker includes a diaphragm. The upper cover includes a top wall and a side wall extending from the top wall. The speaker box further includes a plate having a main body and a sealing ring. The plate is made of flexible material with a Young's modulus smaller than a Young's modulus of the upper cover.