Inductive Coupling Sealing for Hearing Aid Environmental Protection
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Solution Overview
Problem
The electrical connection in two-parted hearing aid devices is susceptible to environmental influences such as water, air, dust, and sweat, leading to malfunctioning or short circuits due to gaps between the processing and receiving units.
Innovation Solution
The use of inductive signal transmission between the processing and receiving units, with transmitter and receiver sealings to cover the inductive components, reducing the number of openings and protecting against environmental influences, while allowing for easy replacement and maintenance of sealings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If mechanical fastening is used to close the gap between processing unit and receiving unit, then protection against environmental influences is improved, but the connection remains vulnerable to moisture and dust through miniature openings
Solution Approach 1:
The patent replaces the mechanical electrical connection system with an inductive coupling system. The processing unit contains an inductive transmitter and the receiving unit contains an inductive receiver, enabling wireless energy transfer and signal transmission. This eliminates the need for physical electrical contacts and associated openings, thereby maintaining environmental protection while ensuring reliable signal transmission without vulnerability to moisture and dust infiltration through mechanical connection points
2Object-affected harmful factors
If permanent sealing is used to protect electrical connection, then protection against environmental influences is improved, but the device becomes difficult to maintain and repair
Solution Approach 1:
The patent divides the hearing aid into two separable modules: a processing unit and a receiving unit. The inductive coupling interface allows these modules to be separated and reconnected. This segmentation enables easy maintenance and repair of individual components without requiring complex disassembly of permanent seals, while the inductive coupling itself provides environmental protection when the units are connected
Solution Approach 2:
By replacing the mechanical electrical connection with inductive coupling, the patent eliminates the need for permanent sealing of electrical contacts. The inductive interface naturally provides environmental protection while allowing for simple module separation and reattachment, greatly improving maintainability without compromising protection against environmental influences
3Ease of operation
If electrical connection with gaps is used between processing unit and receiving unit, then ease of assembly is improved, but the device becomes susceptible to malfunctioning due to sweat and moisture entry
Solution Approach 1:
The patent replaces the mechanical electrical connection system with an inductive coupling system. The inductive transmitter and receiver enable wireless energy transfer and signal transmission without physical electrical contacts. This maintains ease of assembly through simple module connection while eliminating the vulnerability to sweat and moisture entry that plagues traditional electrical connections with gaps and openings
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 solution effectively reduces the risk of malfunctioning by sealing the electrical connection, maintaining signal transmission while allowing for easy handling and maintenance, and providing a stable contact between the units.
Implementation Method 1
The processing unit has an inductive transmitter which is adapted to transmit an electrical signal to the receiving unit by induction
Implementation Method 2
The receiving unit has an inductive receiver which is adapted to receive an electrical signal from the processing unit by induction
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A hearing aid device (2) has a processing unit (4) and a receiving unit (6), such that, the processing unit (4) and the receiving unit (6) are adapted to be coupled to transmit an electrical signal from the processing unit (4) to the receiving unit (6). The processing unit (2) and the receiving unit (6) have a wireless transmitter (28) and a transmitter sealing (20) to cover the wireless transmitter (28) and a wireless receiver (30) and a receiver sealing (22). The electrical signal is transmitted from the wireless transmitter (28) to the wireless receiver (30) wirelessly. In a preferred embodiment the electrical signal is transmitted by induction. The transmitter sealing (20) and the receiver sealing (22) prevent any environmental influences and thus protect the hearing aid device from malfunctioning or getting short circuited. Magnetic connectors (36, 38) and/or mechanical connectors (32, 34) are provided for a stable contact between the processing unit (4) and the receiving unit (6).