Non-Closed Rim Sensitive Diaphragm Impact Resistance
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Solution Overview
Problem
Existing sensitive diaphragms in sensors, such as microphones and pressure sensors, are prone to failure under strong impacts due to excessive deformation caused by annular rim structures, which increase deformation amplitude but lack sufficient resistance to prevent damage.
Innovation Solution
A sensitive diaphragm with a non-closed annular rim structure, featuring integral and continuous non-closed regions that interrupt the rim, reducing deformation amplitude and risk of failure by distributing stress more effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an annular rim structure is provided at the edge of the sensitive diaphragm to increase deformation amplitude, then the detection effect is improved, but when the sensitive diaphragm is subjected to strong impact, the rim structure causes excessive deformation of the central region leading to failure
Solution Approach 1:
The continuous annular rim structure is segmented into multiple discrete rim sections by introducing non-closed regions. This segmentation allows the rim structure to provide deformation enhancement in normal operation while preventing excessive deformation under strong impact, as the gaps distribute and limit the propagation of deformation forces across the diaphragm structure.
2Ease of operation
If the rim structure is made continuous and closed to maximize deformation amplitude, then sensitivity is improved, but the diaphragm becomes more susceptible to damage under impact
Solution Approach 1:
The rim structure transitions from uniform continuity to having localized variations - continuous rim sections for enhancing deformation amplitude in sensitive regions, and non-closed gaps in other regions to provide impact resistance. This local differentiation allows simultaneous optimization of sensitivity and durability by assigning different structural qualities to different portions of the rim.
Data Source
AI summary
The present disclosure discloses a sensitive diaphragm comprising a diaphragm body, an edge region of the diaphragm body being provided with a rim structure, wherein the rim structure is in a non-closed annular shape, a non-closed region is located at a part not closed by the rim structure, and the non-closed region are integral and continuous with parts of the diaphragm body adjacent to the rim structure. According to the sensitive diaphragm of the present disclosure, the annular rim structure is separated by the non-closed region.