Open Earphone Concha Fit for Sound Output Without Ear Canal Blockage
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Solution Overview
Problem
Existing earphones often compromise wearing comfort and output performance due to their design, particularly in-ear devices that block the ear canal, limiting user experience and safety.
Innovation Solution
The open earphone design includes a sound production device partially inserted into the auricular concha cavity with a specific overlap ratio and distance configuration, utilizing an ear hook for secure fitting without blocking the ear canal, and employing a cavity-like structure for enhanced sound propagation and leakage cancellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sound production device is inserted deeper into the ear canal to improve sound output performance, then the sound quality is improved, but the wearing comfortability and user safety deteriorate due to ear canal blockage
Solution Approach 1:
The patent extracts the sound production device from the ear canal environment and relocates it to the auricular concha cavity. This extraction eliminates the harmful blockage of the ear canal while maintaining sound output performance through optimized positioning and cavity utilization.
Solution Approach 2:
Instead of inserting the sound production device into the ear canal as in conventional designs, the patent inverts the approach by positioning it in the auricular concha cavity. This inversion resolves the contradiction by achieving sound output without ear canal blockage.
2Object-affected harmful factors
If the sound production device is positioned to not block the ear canal to improve wearing comfortability, then user comfort and safety are improved, but sound output performance deteriorates
Solution Approach 1:
The patent transitions from the traditional ear canal positioning to the auricular concha cavity, utilizing a different spatial dimension. This dimensional change allows the sound production device to maintain performance while avoiding ear canal blockage.
Solution Approach 2:
The patent changes the positioning parameters of the sound production device, specifically the overlap ratio with the auricular concha cavity projection area and the distance from the inner contour projection. These parameter adjustments optimize both comfort and sound output performance.
3Reliability
If the overlap ratio of the sound production device projection area to the auricular concha cavity projection area is increased to improve sound output, then sound quality is improved, but the device complexity increases
Solution Approach 1:
The patent defines specific parameter ranges for the overlap ratio (not less than 44.01% or not less than 11.82%) and distance (not greater than 16 mm or not greater than 8 mm), providing clear design guidelines that balance performance optimization with manufacturing feasibility.
Data Source
AI summary
The present disclosure relates to an open earphone. The open earphone may include a sound production device and an ear hook including a first part and a second part connected in sequence. The first part may be hooked and arranged between an auricle and a head of a user. The second part may extend to a front lateral surface of the auricle and may be connected to the sound production device. The sound production device may be worn at a position that is near an ear canal without blocking an earhole of the user. The sound production device may be at least partially inserted into an auricular concha cavity of the user. An overlap ratio of a projection area of the sound production device on a sagittal plane to a projection area of the auricular concha cavity on the sagittal plane may be not less than 44.01%.