Multi-Layer Intra-Aural Audio Device for Custom Fit Stability
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Solution Overview
Problem
Intra-aural audio devices often fail to balance comfort and stability, with custom-fitted solutions being time-consuming and expensive, and external support structures being cumbersome.
Innovation Solution
An intra-aural device with multiple layers of different materials that dynamically mold to the user's ear, using a combination of non-allergenic materials and interlocking granules to provide comfort and stability without external support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If custom-fitted devices are used to improve comfort and stability, then the device remains in place and is comfortable, but the manufacturing process becomes time-consuming and expensive
Solution Approach 1:
The device is divided into multiple layers with distinct functions: an inner layer with granular material that molds to the ear canal shape, and an outer layer that provides structural support. This segmentation allows mass production of standardized components while achieving custom-fit performance through the molding layer
Solution Approach 2:
The granular material undergoes parameter changes during insertion - it transitions from a loose, moldable state to a compacted, stable configuration that conforms to the ear canal. This dynamic parameter change enables a single device design to adapt to multiple ear shapes without custom manufacturing
2Reliability
If extraneous support devices like headbands or hooks are added to improve stability, then the device remains in place, but the overall device complexity and user discomfort increase
Solution Approach 1:
The patent extracts the stabilizing function from external support structures (headbands, hooks) and integrates it directly into the intra-aural device itself through the multi-layer construction. The inner granular layer provides form-fitting stability while the outer layer provides structural integrity, eliminating the need for separate support devices
Solution Approach 2:
The device merges the comfort function (through soft granular material conforming to the ear) and the stability function (through the interlocking layer structure) into a single integrated unit. This combination achieves both comfort and stability without requiring additional external components
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 device effectively remains in place during long-term use, offering customizable fit and comfort without the need for external hooks or headbands, addressing the limitations of existing solutions.
Implementation Method 1
The inner layer may comprise a compressible material, such as a granular material, that is configured to deform when a force is applied to the intra aural device during insertion
Implementation Method 2
The outer layer may comprise a non-allergenic material, such as silicone, that is configured to provide a smooth surface against which the granular material may compress
Data Source
AI summary
An intra-aural audio device includes an outer layer shaped to define separate ear canal, concha bowl, and concha cymba portions. An inner layer is disposed within the outer layer, the inner layer having a durometer different than that of the outer layer.