Dual-Driver Ear-Clip Earphone Layout for Higher Sound Pressure
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Solution Overview
Problem
Ear-clip earphones face limitations in volume and sound quality due to the restricted size of the concha cavity, which constrains the sound production portion and acoustic drivers.
Innovation Solution
The ear-clip earphone design incorporates two acoustic drivers within a housing, with a shared sound transmission channel and a sound outlet hole, optimized for the concha cavity, enhancing sound production efficiency and volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single acoustic driver is used in the sound production portion, then the device complexity is reduced, but the sound pressure level and listening volume are insufficient
Solution Approach 1:
The patent combines two acoustic drivers (first acoustic driver and second acoustic driver) into a single sound production portion that fits within the concha cavity. The diaphragms of both acoustic drivers face each other and share a common sound transmission channel, merging their sound output to achieve higher sound pressure level while maintaining compact size.
2Power
If the sound production portion size is increased to improve sound quality, then the listening volume improves, but the ear-clip earphone cannot be properly worn on the concha cavity
Solution Approach 1:
The patent nests the two acoustic drivers within a compact housing that is designed to fit inside the concha cavity. The shared sound transmission channel and optimized diaphragm arrangement allow the sound production portion to achieve sufficient listening volume while maintaining a size appropriate for the concha cavity constraints.
3Power
If the diaphragms are positioned far apart to increase sound transmission channel volume, then the sound quality improves, but the overall size of the sound production portion increases
Solution Approach 1:
The patent arranges the two diaphragms in a face-to-face configuration within the same plane, utilizing the third dimension (depth into the concha cavity) to create the sound transmission channel. This dimensional arrangement allows sufficient sound transmission channel volume for quality sound while keeping the overall footprint compact.
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 dual-diaphragm structure significantly improves sound pressure level and listening volume, while adapting to the concha cavity's space, increasing comfort and sound quality.
Implementation Method 1
a first acoustic driver and a second acoustic driver disposed in the accommodating cavity, a first sound transmission channel being formed between a first diaphragm of the first acoustic driver and a second diaphragm of the second acoustic driver
Data Source
AI summary
An ear-clip earphone is provided. The ear-clip earphone comprises a sound production portion configured to be inserted into a concha cavity of a wearer when the ear-clip earphone is worn by the wearer. The sound production portion comprises a housing having an accommodating cavity; a first acoustic driver and a second acoustic driver disposed in the accommodating cavity, a first sound transmission channel being formed between a first diaphragm of the first acoustic driver and a second diaphragm of the second acoustic driver; a sound outlet hole disposed in the housing, the sound outlet hole being acoustically connected to the first sound transmission channel and exporting sound generated by the first acoustic driver and the second acoustic driver; an abutting portion, configured to abut against behind the ear of the wearer when the ear-clip earphone is worn; and an ear hook, configured to bypass an antihelix and a helix of the wearer and connect the sound production portion to the abutting portion when the ear-clip earphone is worn.