Fluidic Device Unit Structure with Internal Fastening
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Solution Overview
Problem
Conventional fluidic device unit structures with integrated fluidic devices face issues of chemical solution stagnation and potential solidification due to diagonally extending channels, leading to liquid pooling and reduced reliability.
Innovation Solution
A fluidic device unit structure that integrates multiple fluidic devices with a base member and a fastened portion inside the base member, allowing flexible placement of channels to prevent stagnation, using a plate and bolts for secure fixation without the need for wide through-holes, thus avoiding inclined channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluidic devices are fixed to the base member using through-holes and bolts, then the fluidic devices can be securely integrated, but the channel placement is restricted and diagonal channels are formed causing chemical solution stagnation
Solution Approach 1:
The fastening structure transitions from a two-dimensional through-hole configuration to a three-dimensional arrangement with the fastened portion positioned inside the base member and the fastening member extending through the fluidic device. This dimensional change allows the channel to be placed optimally without being constrained by through-hole locations, preventing diagonal channels that cause stagnation while maintaining secure integration.
2Strength
If through-holes are formed in both the base member and fluidic devices for bolting, then secure fixation is achieved, but wide spaces are required and channel routing is constrained
Solution Approach 1:
The fastened portion is nested inside the base member rather than requiring a through-hole that penetrates the entire base member thickness. This nesting approach reduces the space occupied by the fastening structure and eliminates the need for wide through-holes, allowing channels to be routed freely without spatial constraints while maintaining strong fixation through the fastening member that engages with the internal fastened portion.
Data Source
AI summary
Provided is a fluidic device unit structure in which a plurality of fluidic devices are integrated into a single unit and in which retention of a chemical solution or the like can be prevented. The fluidic device unit structure includes a plurality of fluidic devices connected through a channel; a base member on which the plurality of fluidic devices are integrally disposed; a fastened portion disposed inside the base member; and a fastening member fastened to the fastened portion through at least the fluidic device to thereby hold the fluidic device with the base member.