Microphone Conductive Elastic Member for Stable Electrical Connection
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Solution Overview
Problem
The existing microphone designs face issues with the stability of electrical connections between the unit case and the audio-signal output circuit board, leading to potential noise generation and component damage due to stress from the circuit board, which causes disconnection of the ground path.
Innovation Solution
Incorporating a conductive elastic member between the microphone unit and the audio-signal output circuit board, and an elastic member within the microphone case, to absorb stress and maintain a stable electrical connection by ensuring the unit case's open end contacts the circuit board's receivers, thus preventing excessive stress on the microphone components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the audio-signal output circuit board is attached directly to the circuit board with solder to reduce dimensions, then the overall microphone dimensions are reduced, but the electrical connection becomes unstable and prone to disconnection due to stress
Solution Approach 1:
A conductive elastic member is introduced as an intermediary between the audio-signal output circuit board and the circuit board. This elastic member maintains electrical connection through elastic deformation, absorbing stress that would otherwise cause disconnection of solder joints, thereby resolving the contradiction between compact dimensions and connection reliability.
2Volume of moving object
If the circuit board is positioned close to the microphone unit to reduce size, then the microphone section dimensions are reduced, but stress from the circuit board causes disconnection of the ground path
Solution Approach 1:
The conductive elastic member is pre-installed between the circuit board and microphone unit to provide cushioning against future stress. This elastic element anticipates and absorbs mechanical stress before it can cause ground path disconnection, preventing the harmful effects of connection instability and noise.
3Reliability
If solder is used to attach the circuit board to the unit case for electrical connection, then the connection is established, but the connection becomes disconnected or unstable when components are pushed forward by stress
Solution Approach 1:
The rigid solder connection is replaced with a dynamic elastic member that can deform under stress. This elastic member maintains electrical conductivity while adapting to dimensional changes and stress, ensuring stable connection despite the dynamic forces acting on the compact microphone structure.
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 configuration ensures a reliable electrical connection between the unit case and the audio-signal output circuit board, reducing noise and component damage by absorbing stress and maintaining contact even when the circuit board shifts, thereby enhancing the microphone's operational stability and reliability.
Implementation Method 1
Incorporating a conductive elastic member between the microphone unit and the audio-signal output circuit board, and an elastic member within the microphone case, to absorb stress and maintain a stable electrical connection
Implementation Method 2
an elastic member within the microphone case, to absorb stress and maintain a stable electrical connection by ensuring the unit case's open end contacts the circuit board's receivers
Data Source
AI summary
A microphone is provided that ensures the electrical connection between a unit case and an audio-signal output circuit board. The microphone includes a unit case 10 having a shape of a hollow cylinder with a closed end and accommodating an electroacoustic transducer 20, an audio-signal output circuit board 40 connected to the electroacoustic transducer, and a microphone case accommodating the unit case and the audio-signal output circuit board, wherein the audio-signal output circuit board has a receiver 41 disposed on a portion of the peripheral edge of the audio-signal output circuit board, and an open end 11 of the unit case comes into contact with the receiver and is positioned when the unit case and the audio-signal output circuit board are accommodated in the microphone case.