Hearing Aid Loudspeaker Box with Elastic Seal
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Solution Overview
Problem
Hearing aids with loudspeakers face challenges in achieving high amplification while protecting sound-sensitive components from loudspeaker-generated soundwaves and vibrations, requiring effective fluid-tight and vibration-damping solutions.
Innovation Solution
A cup-shaped loudspeaker box with a reversibly connected, nondestructively detachable design using elastic and rigid materials for a fluid-tight seal and vibration damping, incorporating elastomeric materials and interference fits for secure and maintainable assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the loudspeaker box is adhesively bonded or welded to achieve fluid-tight closure, then the fluid-tightness is improved, but the ease of repair and maintenance deteriorates
Solution Approach 1:
The loudspeaker box is divided into separate components (box body and cover) that can be detached from each other. The cover can be removed to access the loudspeaker for maintenance or replacement, while the box body remains intact. This segmentation allows the box to maintain fluid-tightness during operation while enabling easy access for repair and maintenance activities.
2Stability of the object's composition
If the loudspeaker is mounted rigidly to achieve stable positioning, then the positioning stability is improved, but the vibration damping deteriorates
Solution Approach 1:
The loudspeaker cover is designed as a flexible component that can elastically deform to absorb vibrations generated by the loudspeaker. This flexible cover maintains the positioning stability of the loudspeaker while simultaneously damping vibrations and preventing them from being transmitted to the box body and surrounding structures.
3Power
If high amplification is achieved to compensate for hearing loss, then the hearing compensation effectiveness is improved, but the sound protection for sensitive components deteriorates
Solution Approach 1:
The internal space of the hearing device is segmented into separate compartments: one for the loudspeaker and another for the microphone. The loudspeaker box with its removable cover creates an acoustic isolation zone that allows high amplification output without exposing the microphone to the generated soundwaves, thus enabling high power output while protecting sensitive components from harmful sound exposure.
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 provides durable, cost-effective, and maintainable fluid-tight closure and effective vibration damping, reducing structure-borne sound transmission and enabling high amplification in hearing aids.
Implementation Method 1
by a material at the overlap that has an elasticity which is increased relative to a material of at least one of said box bottom shell or said box cover shell
Implementation Method 2
mounted in a vibration-reducing manner in this loudspeaker box, for example by means of an elastomer (for example a rubber or the like)
Data Source
AI summary
A loudspeaker box that is particularly suitable for a hearing aid, includes a cup-like box bottom shell, which delimits a box interior for at least partially receiving a loudspeaker, and a cup-like box cover shell, which, in the intended assembly state of the loudspeaker box, is placed on the box bottom shell overlapping it for a part of its cup height to enclose the box interior and to house the loudspeaker. In the intended assembly state, the box bottom shell and the box top shell form a fluid-tight seal of the box interior in the region of their overlap by the use of a material with increased elasticity relative to the box bottom shell and/or the box cover shell. The box bottom shell and cover shell are reversibly connected to one another in a nondestructively releasable manner.