Channel Chip Fixing Assembly for Stable Piezoelectric Actuation
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Solution Overview
Problem
The existing structure for fixing a channel chip and a piezoelectric element to a mounting portion in particle inspection devices is complex, complicating the device's design and potentially reducing operational reliability.
Innovation Solution
A chip fixing device with a mounting portion and a fixing unit that includes a substrate, a fixing member with an elastically deformable portion, and a holding member that moves to press the channel chip against the substrate, allowing the piezoelectric element to actuate the pressure changing unit while simplifying the fixing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the piezoelectric element is disposed in the chip fixing device instead of in the channel chip, then the manufacturing cost is reduced, but the fixing structure becomes complicated
Solution Approach 1:
The patent combines the piezoelectric element with the fixing member into an integrated assembly. The piezoelectric element is disposed within the fixing member structure, merging two separate components (piezoelectric element and fixing mechanism) into one unified component. This reduces the number of parts and simplifies the overall fixing structure while maintaining the cost advantage of external piezoelectric element placement.
2Reliability
If the channel chip is fixed to the mounting portion with the piezoelectric element touching the pressure changing unit, then the pressure changing unit is actuated appropriately, but the fixing structure becomes complicated
Solution Approach 1:
The piezoelectric element and fixing member are merged into an integrated assembly where the piezoelectric element is positioned to contact the pressure changing unit through the fixing member structure. This ensures reliable actuation while maintaining a simplified unified structure rather than separate components.
Solution Approach 2:
The fixing member acts as an intermediary structure that bridges the mounting portion and the channel chip while incorporating the piezoelectric element. This intermediary structure provides a stable platform for the piezoelectric element to actuate the pressure changing unit reliably.
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
The simplified structure enhances operational accuracy and reliability of the pressure changing unit by accurately fixing the channel chip and piezoelectric element, ensuring smooth and stable operation.
Implementation Method 1
the fixing member including an elastically deformable portion configured to fix the holding member to the fixing member by deforming elastically when pressing the channel chip against the substrate
Implementation Method 2
a piezoelectric element configured to actuate the pressure changing unit
Data Source
AI summary
A chip fixing device includes a mounting portion on which a channel chip is mounted and a fixing unit for fixing the channel chip mounted on the mounting portion. The channel chip includes a channel through which a liquid containing a particle flows and a pressure changing unit for introducing the particle of interest from the channel. The mounting portion includes a substrate on which the channel chip is set. The fixing unit includes a fixing member for pressing the channel chip against the substrate, a piezoelectric element for actuating the pressure changing unit, and a holding member configured to hold the piezoelectric element and movable in a direction in which the holding member approaches and separates from the pressure changing unit. The fixing member includes an elastically deformable portion for fixing the holding member to the fixing member by deforming elastically when pressing the channel chip against the substrate.