Sinuous Sound Transmission Channel for Impurity Blocking
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Solution Overview
Problem
Folding-screen mobile phones with receivers on both sides face challenges in maintaining sound quality due to external impurities entering through sound transmission channels, affecting sound transmission and the service life of the receiver audio assembly.
Innovation Solution
A housing member design incorporating a rear shell, middle frame, and sound transmission gap, where the sound transmission channel is sinuously extended to prevent external impurities from entering and ensure sound quality by altering the sound exiting direction of the receiver audio assembly, and using a foam assembly to further prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a straight sound transmission channel is used, then sound transmission efficiency is improved, but external impurities can easily enter the accommodating cavity affecting sound quality
Solution Approach 1:
The sound transmission channel is designed with a sinusoidal curved path instead of a straight line. This curvature allows sound waves to transmit effectively while the winding structure naturally blocks external impurities from reaching the accommodating cavity, thus protecting sound quality without compromising transmission efficiency
Solution Approach 2:
The foam assembly is introduced as an intermediary material within the sound transmission channel. This foam acts as a filter that allows sound transmission while blocking external impurities, effectively mediating between the need for sound transmission and the need to prevent contamination
2Object-affected harmful factors
If the sound transmission channel is extended sinuously, then external impurities are prevented from entering, but the sound transmission path becomes longer
Solution Approach 1:
The sinusoidal curvature of the sound transmission channel achieves a optimal balance: the curved path is sufficiently winding to block external impurities while maintaining a reasonable length for effective sound transmission. The specific curvature design ensures impurity blocking without excessive path extension
3Volume of stationary object
If the receiver audio assembly is positioned with sound exiting toward the rear shell, then internal space is optimized, but sound transmission quality deteriorates
Solution Approach 1:
The sound transmission channel is designed to extend in multiple spatial dimensions rather than a simple linear path. This multi-dimensional routing allows the sound to travel through an optimized path that maintains quality while accommodating the receiver audio assembly positioning for space optimization
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 design enhances sound quality and extends the service life of the receiver audio assembly by preventing external impurities from entering the sound transmission channel and accommodating cavity, thereby improving the stability and convenience of the electronic device.
Implementation Method 1
The middle frame is provided with a sound transmission channel for communicating the opening of the accommodating cavity with the sound transmission gap
Data Source
AI summary
A housing member and an electronic device are provided. The housing member is configured to accommodate a receiver audio assembly, and includes a rear shell, a middle frame and a sound transmission gap for sound transmission. The rear shell and the middle frame define an accommodating cavity for accommodating the receiver audio assembly, the accommodating cavity is provided with an opening for sound transmission, and the opening is opposite to the rear shell. The middle frame is provided with a sound transmission channel for communicating the opening of the accommodating cavity with the sound transmission gap. The electronic device includes the receiver audio assembly and the housing member. The receiver audio assembly is fixed in the accommodating cavity. The sound exiting direction of the receiver audio assembly is opposite to the rear shell and coincides with a direction of the opening of the accommodating cavity.