Earphone Positioning Structure for Stability and Comfort
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Solution Overview
Problem
Conventional earphones with wireless electronics modules face challenges in achieving proper orientation and stability due to the absence of wires or cables, leading to discomfort and instability, especially with the added weight of the electronics module causing the earpiece to shift and rotate improperly within the ear.
Innovation Solution
A positioning and retaining structure with outer and inner legs made of silicone, designed to be stiffer in certain directions and more compliant in others, which includes a curved outer leg that follows the anti-helix and an angled design to seat securely under the anti-helix, providing multiple modes of positioning to accommodate various ear geometries and sizes, and an acoustic driver module slanted inwardly and forwardly to shift the center of gravity, enhancing stability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless electronics module is added to earphone, then functionality is improved, but stability and orientation are worsened due to weight causing earpiece to shift and rotate
Solution Approach 1:
The positioning and retaining structure with curved outer leg and angled inner leg acts as a counterweight mechanism, using the structural geometry and material distribution to offset the gravitational effect of the electronics module, preventing the earpiece from shifting downward and rotating improperly within the ear
2Stability of the object's composition
If positioning structure is made stiffer to improve stability, then stability is improved, but comfort is worsened due to increased pressure on the ear
Solution Approach 1:
The positioning and retaining structure employs local quality by having the outer leg and inner leg with specific geometric configurations that concentrate stiffness in directions where structural support is needed (preventing downward shift and rotation) while maintaining compliance in directions where comfort is prioritized (reducing pressure on the ear), achieving both stability and comfort through directionally differentiated mechanical properties
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 solution ensures proper and uniform orientation of the earpiece, providing greater stability and comfort by distributing force and reducing pressure on the ear, while maintaining acoustic performance across different ear sizes and shapes.
Implementation Method 1
A positioning and retaining structure with outer and inner legs made of silicone, designed to be stiffer in certain directions and more compliant in others
Data Source
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AI summary
An earphone (10) comprising: an acoustic driver (116); a housing (16) containing the acoustic driver, the housing including a front chamber (114) acoustically coupled to the acoustic driver and a nozzle (126) acoustically coupled to the front chamber; and an ear interface comprising: a body portion (12) that fits beneath the tragus and antitragus and has a surface (13) that rests against the concha of a user's ear when worn by the user, an outlet (15) arranged to fit inside the user's ear canal entrance so as to seal it with minimal pressure, the outlet being coupled to the nozzle of the housing and providing a passageway for conducting acoustic energy from the acoustic driver to the user's ear canal, and a positioning and retaining structure (20) terminating at an extremity (35) and arranged for contacting the antihelix of the user's ear along a length (40), and the extremity of the positioning and retaining structure contacts the base of the helix of the user's ear.