Flexure Support Structure for Low-Amplitude Vibration Isolation
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Solution Overview
Problem
Existing supporters that use frictional damping to suppress vibration are ineffective unless significant vibrations occur, failing to adequately prevent vibration transmission between the supported body and the floor surface.
Innovation Solution
A supporter design featuring an upper member with a flexure that bends downward under load, forming a sliding region with a lower member's corresponding flexure or contact, allowing for sliding motion to suppress vibration transmission regardless of magnitude.
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 introduces flexures that dynamically change the contact interface between upper and lower members. The flexures bend under load to create a sliding region, transforming the static simple sliding structure into a dynamic system that adapts to vibration conditions, thereby improving vibration suppression effectiveness while maintaining structural simplicity
Solution Approach 2:
The patent changes the physical state of the contact surface by introducing flexures that bend under load, creating a sliding region with specific friction characteristics. This parameter change enables the contact interface to transition from rigid to flexible, allowing effective frictional damping across various vibration magnitudes while keeping the overall structure simple
2Device complexity
If frictional damping is used with simple sideways sliding, then the structure remains simple, but vibration transmission cannot be suppressed for small vibrations
Solution Approach 1:
The flexures introduce dynamic behavior to the contact interface, allowing the system to respond to both small and large vibrations. The bending action of the flexures creates a sliding region that activates frictional damping across the full range of vibration magnitudes, effectively suppressing vibration transmission without complicating the overall structure
Solution Approach 2:
The flexures act as intermediary elements between the upper and lower members, mediating the force transmission and creating a controlled sliding region. This intermediary mechanism enables effective vibration suppression across all magnitudes while maintaining the simplicity of the basic sliding 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
The supporter effectively suppresses vibration transmission between the supported body and the floor surface by enabling sliding motion between flexures or contacts, irrespective of vibration magnitude.
Implementation Method 1
when the supported body or the floor surface vibrates, the first flexure and the second flexure slide on each other within the sliding region... suppress transmission of the vibration
Data Source
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AI summary
[Problem] To suppress, irrespective of the magnitude of vibration, transmission of vibration of a supported body to a floor surface and transmission of vibration of the floor surface to the supported body. [Means to Solve Problem] According to an aspect of the present invention, a supporter is provided. The supporter includes an upper member 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 member which is arranged on a floor surface and on which the upper member is to be mounted. The upper member 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 member 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 formed by the load receiver having received the load of the supported body.