Flow Meter Substrate Vibration Resistance Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing flow meters lack sufficient measures to prevent deformation due to vibration, which can lead to increased stress and reduced reliability.
Innovation Solution
A flow meter design featuring a flat circuit substrate divided into two regions, with a support disposed in one region and a fixing unit in the other, where the support contacts both the substrate and a cover to prevent deformation and reduce stress, using a press-fit terminal for mechanical and electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit substrate is housed inside a housing with a cover, then the substrate is protected from external environment, but the substrate may deform due to vibration during operation
Solution Approach 1:
The circuit substrate is divided into two distinct regions: a first region that is supported by a support structure to prevent deformation, and a second region that is fixed to the housing using a fixing unit. This segmentation allows each region to serve its specific function - the first region maintains substrate integrity under vibration while the second region provides secure mechanical attachment to the housing.
Solution Approach 2:
Different structural measures are applied to different regions of the substrate. The first region receives support from a support structure that contacts both the substrate and cover to prevent vibration-induced deformation, while the second region is secured through a fixing unit that connects the substrate to the housing. This localized approach optimizes vibration resistance where needed while maintaining overall structural integrity.
2Object-affected harmful factors
If a support structure is added to prevent substrate deformation, then vibration resistance improves, but device complexity increases
Solution Approach 1:
The support structure is designed to contact both the circuit substrate and the cover simultaneously, merging the support function with the existing housing structure. The fixing unit connects the substrate to the housing, integrating the fixation function into the overall housing assembly. This merging approach provides vibration resistance without adding completely separate, complex support systems.
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 design effectively prevents deformation of the circuit substrate during vibration, reduces stress concentrations, and enhances the reliability of the flow meter by stabilizing the substrate and housing connection.
Implementation Method 1
an elastic deformation region which is elastically deformed is previously formed on the press-fit terminal, and the elastic deformation region is press-fitted into a through hole formed in the circuit substrate to achieve electrical connection
Implementation Method 2
a wire of gold, aluminum or the like is welded to the semiconductor module, the circuit substrate or the like using heat or ultrasonic waves to achieve electrical connection
Implementation Method 3
a wire of gold, aluminum or the like is welded to the semiconductor module, the circuit substrate or the like using heat or ultrasonic waves
Data Source
AI summary
A flow meter includes: a flat substrate; a housing that houses the substrate and has an open in at least one surface; a cover that covers the substrate and covers an open surface of the housing; a support that supports the substrate and is in contact with the cover and the substrate; and a fixing unit that connects the substrate and the housing, in which, in a first region and a second region formed by dividing the substrate into two parts at a center in a longitudinal direction, the support is disposed in the first region, and the fixing unit is disposed in the second region.