Universal Hearing Aid PCB with Solder-Selectable Polarity
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Solution Overview
Problem
Current hearing assistance devices, such as hearing aids, require distinct circuit configurations for the right and left ears due to opposite battery polarities, leading to increased manufacturing complexity and costs.
Innovation Solution
A printed circuit board with a solder selectable portion that allows for configuration as either a left or right hearing assistance device, using jumper fingers or other conductive devices to select battery polarity, enabling a single flexible circuit to be used in both ears by bridging connections during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate circuit configurations are used for right and left hearing assistance devices, then battery polarity requirements are met, but manufacturing complexity and costs increase
Solution Approach 1:
The patent applies universality by designing a single printed circuit board that can serve both right and left hearing assistance devices. The circuit board includes selectable configurations that allow it to adapt to different battery polarity requirements, eliminating the need for separate circuit designs for each ear.
Solution Approach 2:
The patent implements dynamics through solder selectable jumpers that allow the circuit configuration to be changed during assembly. This dynamic reconfiguration capability enables the same physical circuit board to be adapted for different polarity requirements based on whether it is being assembled for a right or left device.
2Reliability
If separate circuit configurations are used for right and left hearing assistance devices, then proper battery polarity is ensured, but manufacturing time and productivity decrease
Solution Approach 1:
The patent applies preliminary action by pre-configuring the circuit board with selectable jumpers during manufacturing, but leaving the actual configuration selection to be made during assembly based on the intended ear (right or left). This allows the board to be prepared in advance while maintaining flexibility for rapid configuration selection during final assembly.
Solution Approach 2:
The patent segments the circuit board into distinct selectable portions with jumpers that can be independently configured. This segmentation allows assembly workers to quickly select and configure only the relevant polarity settings without having to handle or configure entire separate circuit boards, thereby speeding up the assembly process.
3Reliability
If separate circuit configurations are used for right and left hearing assistance devices, then polarity requirements are satisfied, but material costs and manufacturing complexity increase
Solution Approach 1:
The patent merges the functionality of separate right and left circuit configurations into a single unified circuit board design. By combining multiple configuration options into one board with selectable jumpers, the patent reduces the number of different circuit board types that need to be manufactured, stored, and assembled, thereby simplifying production and reducing material costs.
Data Source
AI summary
This disclosure relates to method and apparatus for selecting right and left configurations of hearing assistance device circuits, such as battery polarity. In various applications the present subject matter is applicable to a flexible circuit in hearing assistance devices, including but not limited to hearing aids. In one example, a printed circuit board is configured during manufacture to be used in either a left or a right hearing assistance device. The printed circuit board includes a solder selectable portion to provide for selection of left or right during assembly of the hearing assistance device, according to various embodiments.