Dual-Driver Clip-On Earbud for Concha-Limited Sound Output
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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 the sound production portion size is increased to improve sound quality and volume, then the sound production efficiency improves, but the ear-clip earphone cannot be properly worn due to concha cavity space constraints
Solution Approach 1:
The patent combines two acoustic drivers into a single sound production portion, merging their sound transmission channels to share a common outlet hole. This allows the system to achieve the sound production capability of larger devices while maintaining a compact form factor that fits within the concha cavity, resolving the contradiction between sound quality and size constraints.
Solution Approach 2:
The patent utilizes the three-dimensional space of the concha cavity by positioning acoustic drivers at different spatial locations and orientations. The sound transmission channels are arranged to exploit vertical and radial dimensions, allowing efficient sound production without increasing the overall footprint of the device.
2Device complexity
If a single acoustic driver is used to simplify the structure, then the device complexity is reduced, but the sound volume and quality are insufficient
Solution Approach 1:
The patent merges two acoustic drivers into a unified sound production system where both drivers share common structural elements including the housing, diaphragm assembly, and sound outlet hole. This combining approach doubles the sound production capability while avoiding the complexity of having completely separate acoustic systems.
Solution Approach 2:
The sound outlet hole serves multiple functions simultaneously: it acts as the acoustic output for both drivers, provides structural support for the diaphragm assembly, and forms part of the sound transmission channel geometry. This multi-functionality reduces overall device complexity while maintaining high sound volume.
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, ensuring comfort and 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
Implementation Method 2
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
Data Source
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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.