Hearing Aid Flexible Antenna PCB Orientation
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Solution Overview
Problem
There is a need to reduce the size of the electrical assembly of hearing devices while maintaining design flexibility and simplifying routing, which existing technologies have not adequately addressed.
Innovation Solution
The integration of a flexible printed circuit board with an antenna and a printed circuit board, where the terminal normal and board normal form an angle between 30° to 150°, allowing for reduced pad surface area and simpler routing, and optionally including indentations to accommodate terminals and enhance mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible printed circuit board with antenna is integrated at a non-perpendicular angle (30° to 150°) to the printed circuit board, then design flexibility and routing simplicity are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by specifying a range of angles (30° to 150°) for the terminal normal relative to the board normal, rather than requiring a fixed perpendicular orientation. This angular parameter variation enables design flexibility while the patent compensates for the increased manufacturing complexity through standardized connection structures and automated assembly processes
Solution Approach 2:
The electrical assembly is segmented into distinct components (printed circuit board, flexible printed circuit board with antenna) that can be manufactured and positioned independently. The connection between these segments uses standardized pads and terminals that accommodate angular variations, allowing each component to be optimized separately while maintaining overall assembly functionality
2Volume of moving object
If the terminal normal and board normal form an angle between 30° to 150°, then the size of the electrical assembly is reduced, but the complexity of the connection structure increases
Solution Approach 1:
The patent utilizes angular orientation in the spatial dimension to reduce the footprint of the electrical assembly. By positioning the flexible printed circuit board terminal at an angle (30° to 150°) relative to the printed circuit board, the connection structure exploits spatial arrangement to minimize overall assembly size while maintaining electrical connectivity through appropriately designed conductive paths and contact areas
3Device complexity
If the flexible printed circuit board is positioned at an angled orientation, then routing is simplified, but mechanical stress on the flexible board increases
Solution Approach 1:
The patent applies local quality by providing mechanical support and stress distribution specifically at the connection region where the flexible printed circuit board meets the printed circuit board. The angled orientation (30° to 150°) simplifies routing in the main body of the device, while localized reinforcement structures at the connection point address the increased mechanical stress in that specific area
Data Source
AI summary
A hearing aid having an electrical assembly, the electrical assembly includes a printed circuit board having a first board surface and a second board surface, the printed circuit board having a first pad in a first pad region on the first board surface, the first pad region having a first board normal; a flexible printed circuit board comprising an antenna, the antenna having a first terminal in a first terminal region on a first flexfilm surface of the flexible printed circuit board, the first terminal region having a first terminal normal; and first electrically conductive material connecting the first pad and the first terminal, and wherein the first terminal normal and the first board normal forms a first angle that is anywhere from 30° to 150°.