Stationary Coil With Ferromagnetic Core for Hearing Aid Receiver
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Previous hearing aid receiver designs require precise coil construction and integration, limiting manufacturing efficiency, customization, and increasing costs due to the coil's deep integration and need for tight tolerances around the moving reed.
Innovation Solution
The coil is fixedly attached to a ferromagnetic core, allowing for easier alignment and customization, with the coil module being a self-contained unit that remains stationary during operation, eliminating the need for precise placement and reducing manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coil is deeply integrated into the receiver construction with tight tolerances around the moving reed, then the receiver achieves reliable operation, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The receiver is divided into separate functional modules: a stationary coil assembly with ferromagnetic core and a separate moving reed assembly. This segmentation allows each module to be manufactured independently with standard tolerances, then assembled together, eliminating the need for tight tolerances between coil and reed while maintaining reliable operation.
Solution Approach 2:
A ferromagnetic core is introduced as an intermediary element between the coil and the moving reed. The core is fixedly attached to the coil assembly and provides a stable magnetic path, allowing the coil to generate magnetic flux without requiring precise alignment with the moving reed, thus reducing manufacturing complexity while ensuring reliable operation.
2Productivity
If the coil is fixedly attached to a stationary ferromagnetic core, then manufacturing efficiency and customization improve, but the magnetic circuit configuration changes from previous designs
Solution Approach 1:
The magnetic circuit is segmented into a stationary portion (coil with ferromagnetic core) and a moving portion (reed). This allows the stationary coil assembly to be manufactured efficiently with standardized components while the moving reed can be customized for different applications, achieving both high productivity and adaptability.
Solution Approach 2:
The stationary coil assembly with ferromagnetic core serves as a universal module that can be paired with different reed configurations to meet various application requirements. This multi-functional design allows the same coil assembly to support different magnetic circuit configurations, maintaining versatility while improving manufacturing efficiency.
3Reliability
If the coil is configured to match specific electrical requirements, then performance is optimized, but manufacturing commonality and efficiency are reduced
Solution Approach 1:
The receiver system is segmented into a standardized coil assembly platform and application-specific reed components. The coil assembly can be manufactured in high volumes with common specifications, while the reed portions can be customized for specific electrical performance requirements, achieving both manufacturing commonality and performance optimization.
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
This approach significantly reduces production costs and enhances manufacturing efficiency, enabling highly customizable and cost-effective hearing aid receivers with improved design flexibility and performance.
Implementation Method 1
a coil is used to induce magnetic flux or field as electrical current is run through the coil. The magnetic field is induced into a ferromagnetic core which comprises a portion of a magnetic circuit.
Implementation Method 2
The magnetic field is induced into a ferromagnetic core which comprises a portion of a magnetic circuit.
Data Source
AI summary
A receiver includes an acoustic module and a coil module. The acoustic module includes a first housing, a plurality of magnets, and an armature. The armature is disposed within the first housing and extends between the plurality of magnets. The coil module is coupled to the acoustic module, is physically separate from the acoustic module, and includes a second housing and a coil. The coil disposed within the second housing and does not surround the armature. The coil is excitable by an electrical current representative of acoustic energy and excitation of the coil produces a magnetic flux path which moves the armature.