Spring Isolation Mount for Electrophoretic Mobility Vibration Control
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Solution Overview
Problem
Current electrophoretic mobility measurement instruments face challenges in isolating external vibrations, which can affect the accuracy of measurements due to insufficient natural frequency and rotational stiffness in existing vibration isolators.
Innovation Solution
The apparatus employs at least three springs with specific configurations, including top and bottom flexing rings, outer and inner rigid connectors, to isolate external vibrations. These springs are designed to maximize rotational/rocking stiffness while maintaining low vertical stiffness, thereby minimizing vertical vibrations and enhancing vibration isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vibration isolators are used, then the instrument can be mounted, but the natural frequency is insufficient and rotational stiffness is low, leading to poor vibration isolation
Solution Approach 1:
The vibration isolation system is segmented into multiple independent springs (at least three) distributed around the instrument chassis. Each spring handles vertical loading while the collective arrangement provides rotational stiffness, resolving the contradiction by dividing the isolation function across multiple elements rather than relying on a single isolator with insufficient stiffness.
Solution Approach 2:
The spring design combines flexible elements (spring material) with rigid connectors (outer and inner rigid connectors). This composite structure allows the spring to provide vertical compliance for low natural frequency while the rigid connectors maintain rotational stiffness, simultaneously achieving both requirements that were previously contradictory.
2Measurement precision
If vibration isolation is enhanced, then measurement accuracy improves, but the structural complexity of the mounting system increases
Solution Approach 1:
Each spring serves multiple functions simultaneously: it provides vertical vibration isolation, supports the instrument weight, and contributes to rotational stiffness through its positioning and rigid connector design. This multi-functionality achieves improved measurement precision without proportionally increasing device complexity, as the same components accomplish multiple objectives.
Solution Approach 2:
The mounting system merges vibration isolation, structural support, and rotational stability functions into a single integrated spring assembly with rigid connectors. By combining these functions rather than using separate components for each, the system achieves high measurement precision while controlling overall structural complexity.
3Reliability
If the spring configuration is optimized for low vertical stiffness, then vertical vibration isolation improves, but rotational/rocking stability may be compromised
Solution Approach 1:
The spring configuration optimizes local properties differently for vertical and rotational directions. The spring material and geometry are designed for low vertical stiffness to isolate vibrations, while the rigid connectors and spatial arrangement of multiple springs provide high rotational stability. This local differentiation of mechanical properties resolves the contradiction between vertical compliance and rotational rigidity.
Solution Approach 2:
The solution transitions from considering only vertical stiffness to a three-dimensional arrangement of multiple springs with rigid connectors. By adding the dimensional aspect of spatial distribution and connector geometry, the system achieves low vertical stiffness through spring compliance while gaining rotational stability through the geometric arrangement, resolving the apparent contradiction.
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 apparatus effectively isolates external vibrations, achieving superior vibration isolation with low natural frequencies and increased rotational stiffness, which improves the accuracy and robustness of electrophoretic mobility measurements.
Implementation Method 1
The apparatus employs at least three springs with specific configurations, including top and bottom flexing rings, outer and inner rigid connectors, to isolate external vibrations
Implementation Method 2
The apparatus includes at least three springs, where each of the at least three springs includes a top flexing ring and a bottom flexing ring
Data Source
AI summary
The present disclosure describes an apparatus to isolate external vibration for electrophoretic mobility measurement. In an exemplary embodiment, the apparatus includes at least three springs, (1) where each of the at least three springs includes (a) a top flexing ring, (b) a bottom flexing ring, (c) a plurality of outer rigid connectors, and (d) an inner rigid connector, (2) where the plurality of outer rigid connectors and the inner rigid connector couple the top flexing ring and the bottom flexing ring to each other, (3) where the inner rigid connector is connected to a surface of a chassis of an electrophoretic mobility measurement instrument, and (4) where the plurality of outer rigid connectors is connected to a ground surface of an enclosure of the instrument.