Detachable Hearing Aid Speaker Assembly for Stable Connector Sealing
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Solution Overview
Problem
Hearing aids face challenges in maintaining stable connections in harsh environments due to exposure to fluids, wax, and sweat, with existing connectors prone to misalignment and failure, affecting their longevity and usability.
Innovation Solution
A detachable speaker unit system with a plug-and-socket connector design featuring loop and protrusion structures, spring contacts, and a sealing mechanism, ensuring stable mechanical alignment and resistance to unintentional detachment, while allowing easy insertion and removal without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a detachable speaker unit with connector is used to allow different types and sizes of output transducers, then adaptability is improved, but connection stability deteriorates due to exposure to harsh environments
Solution Approach 1:
The connector is divided into two separate parts: a socket connector integrated into the behind-the-ear housing and a plug connector integrated into the connecting element. This segmentation allows the detachable speaker unit to be connected or disconnected as needed while maintaining connection stability through proper mechanical design of each segment.
Solution Approach 2:
The plug connector is designed to insert into and nest within the socket connector, forming a nested structure. The plug housing receives the socket housing, and the contact pins are received within the contact cavities, creating a nested arrangement that ensures stable connection while allowing adaptability.
2Ease of operation
If the connector is made detachable to allow easy removal and replacement, then ease of operation is improved, but connection stability deteriorates due to risk of unintentional detachment
Solution Approach 1:
The connector design incorporates asymmetric features including a non-circular cross-section of the connecting element and corresponding asymmetric guide structures in the socket connector. This asymmetry allows easy insertion in the correct orientation while preventing unintentional detachment by ensuring the connector can only be removed through deliberate user action.
Solution Approach 2:
The connector incorporates curved or rounded features in its design, such as the generally circular cross-section of the connecting element that transitions to a more specific shape near the connector interface. This curvature design facilitates easy insertion while maintaining stable connection through the rounded interface geometry.
3Shape
If the connector interface is made small to reduce visibility and improve comfort, then aesthetic appearance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The socket connector incorporates guide structures and alignment features that preliminarily position the plug connector during insertion. The guide ribs and corresponding grooves, along with the asymmetric cross-section, perform the alignment action before the final connection is made, reducing the precision requirements for the final positioning.
Solution Approach 2:
The connector design incorporates intermediary alignment features such as guide ribs, grooves, and asymmetric cross-sectional shapes that mediate the connection process. These intermediary structures facilitate precise alignment of the small connector interface by providing mechanical guidance during insertion, reducing the overall manufacturing precision requirements.
Data Source
AI summary
The present disclosure relates to a hearing aid and detachable speaker unit assembly. The detachable speaker unit assembly comprises a fastening structure to provide an enhanced removal force and stable insertion into the ear canal of the user.