Receiver Assembly Vibration Dampening Elastic Foil
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Solution Overview
Problem
Existing receiver assemblies in personal audio devices, such as hearing aids, suffer from vibrations that are not effectively reduced, leading to feedback issues due to the rigid structures used in prior art, which limit the performance of these devices.
Innovation Solution
A receiver assembly with a vibration dampening element formed by an elastic foil that connects the sound outlet of the receiver to the assembly housing, providing compliance to decouple vibrations and reduce their transmission, while allowing sound to propagate effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rigid structure is used to support the receiver, then positioning precision is improved, but vibration transmission to the housing increases
Solution Approach 1:
The suspension structure is divided into multiple segments with different material properties - a rigid portion for positioning and a flexible portion for vibration dampening. This segmentation allows each part to perform its specific function optimally without compromising the other.
Solution Approach 2:
Different portions of the suspension structure have different mechanical properties - the first portion is rigid for precise positioning, while the second portion is flexible for vibration reduction. This local differentiation of material properties resolves the contradiction between positioning precision and vibration transmission.
2Strength
If a solid suspension member with significant material thickness is used, then structural strength is improved, but vibration reduction capability deteriorates
Solution Approach 1:
The second portion of the suspension structure uses a flexible material with thin wall characteristics to provide vibration dampening. This flexible thin-walled structure effectively reduces vibrations while maintaining sufficient structural integrity through its integration with the rigid portion.
Solution Approach 2:
The suspension structure combines rigid and flexible materials in a composite construction. The rigid portion provides structural strength and positioning accuracy, while the flexible portion provides vibration reduction, achieving both requirements simultaneously through material composition rather than relying on thick solid structures alone.
3Stability of the object's composition
If the receiver is rigidly mounted to the housing, then stability is improved, but feedback from vibrations increases
Solution Approach 1:
The suspension structure introduces dynamic flexibility to the mounting system through the flexible second portion, allowing the receiver to be mounted stably while enabling vibration isolation. This dynamic characteristic prevents rigid coupling that would cause feedback while maintaining operational stability.
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 elastic foil vibration dampening element significantly reduces vibrations from the receiver to the assembly housing, minimizing feedback and enhancing the performance of personal audio devices by effectively decoupling the receiver from the housing.
Implementation Method 1
a vibration dampening element connects the sound outlet and the assembly sound outlet, the vibration dampening element being formed by an elastic foil and being compliant to reduce vibrations from the receiver to the assembly housing
Data Source
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Figure 3
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AI summary
The present invention provides a receiver assembly comprising a receiver and an assembly housing. The receiver comprises a sound outlet configured to outlet sound from the receiver. The receiver is arranged at least partly within the assembly housing. The assembly housing comprises an assembly sound outlet. The sound outlet is arranged in communication with the assembly sound outlet for outlet of sound from the receiver via the assembly sound outlet. A vibration dampening element connects the sound outlet and the assembly sound outlet. The vibration dampening element is formed by an elastic foil and is compliant to reduce vibrations from the receiver to the assembly housing.