Adjustable Securing Mechanism for Hearing Aids
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Solution Overview
Problem
Conventional securing mechanisms for space access devices, particularly audio transmitting devices, face issues such as discomfort due to high forces applied, easy dislodgment, failure to conform to the shape of internal spaces, lack of fluid flow, and inadequate sound modulation, leading to leakage and inconsistent performance.
Innovation Solution
A securing mechanism with adjustable outwardly projecting members that transition from a relaxed to a securing state, allowing for secure engagement, fluid flow, and sound modulation, featuring a sound blocking portion to prevent external sound transmission while allowing airflow and conforming to the internal space's shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional securing means (securing rings, compliant outer layers) are used to secure the device, then the device can be held in place, but the securing means apply high forces that cause discomfort to the user
Solution Approach 1:
The securing mechanism is divided into multiple independent outwardly projecting members (fins) that can individually contact the ear canal surface. This segmentation distributes the securing force across multiple contact points rather than concentrating it, reducing discomfort while maintaining reliable securing.
Solution Approach 2:
The outwardly projecting members are designed to be flexible and adaptable, transitioning from a relaxed state during insertion to a securing state when engaged with the ear canal. This dynamic behavior allows the members to conform to the ear canal shape, distributing force evenly and reducing discomfort while maintaining secure engagement.
2Reliability
If conventional securing means are used, then the device can be secured, but the devices are easily dislodged
Solution Approach 1:
The outwardly projecting members have an asymmetric geometry with a broader base and tapered tip. This asymmetric shape provides mechanical interlocking with the ear canal surface, making it difficult for the device to be dislodged while allowing easy insertion. The asymmetric design creates directional friction that resists removal forces.
Solution Approach 2:
The outwardly projecting members feature curved surfaces that conform to the cylindrical geometry of the ear canal. This curvature allows the members to wrap around and engage with the ear canal walls, creating a secure fit that resists dislodgment while maintaining comfort through even force distribution.
3Reliability
If conventional securing means are used, then the device can be secured, but the means do not self-adjust or self-conform to the shape of the internal space
Solution Approach 1:
The outwardly projecting members are made of a flexible material that changes its physical parameters (shape, cross-sectional area) in response to the ear canal geometry. When inserted, the members deform to match the specific shape and size of the user's ear canal, providing a customized fit without requiring custom manufacturing for each user.
Solution Approach 2:
The securing mechanism automatically adjusts and conforms to the ear canal shape through the inherent flexibility of the outwardly projecting members. The members self-adjust their position and orientation to optimize engagement with the ear canal surface, eliminating the need for manual adjustment or custom fitting procedures.
4Reliability
If conventional securing means are used, then the device can be secured, but there is no fluid flow through the device or between the securing means and the opening
Solution Approach 1:
The securing mechanism features localized openings and gaps between the outwardly projecting members that allow fluid flow in specific regions. This local quality enables air circulation and moisture management at the ear canal interface while maintaining overall securing effectiveness, preventing discomfort from trapped moisture or heat.
5Reliability
If conventional securing means are used, then the device can be secured, but there is no means for modulating audio signal amplitude and frequency
Solution Approach 1:
The outwardly projecting members serve multiple functions: they provide mechanical securing engagement with the ear canal surface, allow fluid flow for comfort, and modulate audio signals through their physical structure. This multi-functionality integrates securing, comfort, and acoustic performance into a single component design.
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 mechanism provides extended wear comfort, secure engagement, and improved sound quality by reducing leakage and enhancing the fitting range of hearing aids, allowing for fluid flow and effective sound modulation.
Implementation Method 1
at least a portion of the adjustable securing mechanism is configured to transition from a first state to a securing state when inserted into the internal space or opening, wherein the securing state comprises at least the securing portion being constrained to have a smaller cross-sectional diameter relative to a cross-sectional diameter in the first state
Data Source
AI summary
Securing mechanisms for space access devices, such as an audio signal transmitting device, include a plurality of outwardly projecting members that are configured to transition from a relaxed state to a securing state when the space access device is inserted into an internal space or opening that has an inside diameter smaller than an outside diameter of the outwardly projecting members in the relaxed state. The outwardly projecting members securely engage a surface of the internal space and conform to the shape and size of the internal space. A sound blocking portion can be provided to substantially prevent air/sound flow past the sound blocking portion of the securing mechanism.