Flexure Supporter Structure for Frictional Vibration Isolation
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Solution Overview
Problem
Existing supporters that use frictional damping to suppress vibration are ineffective unless significant vibrations occur, as the upper member simply slides sideways relative to the lower member, limiting the achievement of frictional damping.
Innovation Solution
The supporter includes an upper portion with a load receiver and a lower portion with a second flexure that bends downward when pressed by the first flexure, creating a sliding region where the first and second flexures can slide on each other, effectively reducing or preventing vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the upper member simply slides sideways relative to the lower member using frictional damping, then the structure is simple, but the vibration suppression effect is insufficient unless significant vibrations occur
Solution Approach 1:
The patent applies the dynamics principle by introducing flexures that enable dynamic relative movement between the upper and lower members. The flexures allow the members to move not only horizontally but also vertically and rotate, creating a more complex motion pattern that enhances frictional damping effectiveness across various vibration magnitudes, thus improving vibration suppression while maintaining reasonable structural simplicity.
2Reliability
If flexures are introduced to create a sliding region for enhanced frictional damping, then vibration suppression improves, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the connection between upper and lower members into distinct flexure components. These flexures are segmented elements that provide specific degrees of freedom (horizontal movement, vertical bending, rotation), allowing the complex vibration suppression function to be achieved through modular, manageable components rather than a monolithic complex structure.
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 allows for the reduction or prevention of vibration transmission between the supported body and the floor surface, and vice versa, irrespective of the magnitude of vibration, by utilizing the sliding region between the flexures.
Implementation Method 1
uses frictional damping that occurs at the contact surface between the upper member and the lower member
Implementation Method 2
a sliding region in which the first flexure being bent downward and the second flexure being bent downward as pressed by the first flexure can slide on each other
Data Source
AI summary
A supporter includes an upper portion including a load receiver on which a projection projecting downward from a supported body is to be mounted and which receives a load of the supported body. The supporter includes a lower portion to be provided on a floor surface and on which the upper portion is to be mounted. The upper portion includes, in a center portion thereof in a plan view, a first flexure that bends downward under the load of the supported body received by the load receiver. The lower portion includes a second flexure that bends downward when pressed by the first flexure bending downward. In the supporter, a sliding region in which the first flexure being bent downward and the second flexure being bent downward as pressed by the first flexure can slide on each other is defined by the load receiver having received the load of the supported body.