Floating Fastener Shock-Absorbing Structure for Vibration Damping
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Solution Overview
Problem
Conventional floating fasteners fail to effectively absorb and buffer stress caused by vibrations, leading to poor signal quality due to the transmission of external forces and impacts to electronic components.
Innovation Solution
A floating fastener with a shock-absorbing structure comprising a base with a cylindrical portion, a flexible liner, and a buffer pad, where the buffer pad and flexible liner are positioned on opposing surfaces of a preset first plate to absorb stress, and a positioning tube with a tapered wall surface that supports the buffer pad against the plate, along with a locking mechanism with internal and external threads for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the floating fastener uses a rigid fixed structure, then the fastening strength is improved, but the transmission of vibration and impact force to electronic components increases
Solution Approach 1:
The patent employs flexible liners and buffer pads made of elastomeric materials that conform to the surfaces of electronic components. These flexible elements provide shock absorption and vibration damping while maintaining secure fastening, resolving the contradiction between rigid fastening strength and vibration transmission prevention.
Solution Approach 2:
The patent incorporates buffer pads and elastic members in advance within the fastening structure to cushion against upcoming impacts and vibrations. This beforehand cushioning prevents harmful forces from being transmitted to electronic components while maintaining fastening integrity.
2Device complexity
If the floating fastener uses a simple fixed structure, then the device complexity is reduced, but the shock-absorbing capability is insufficient
Solution Approach 1:
The patent uses a nested structure where the buffer pad is positioned within the fastening assembly, and the flexible liner is integrated into the connecting seat. This nesting approach provides comprehensive shock absorption without significantly increasing overall device complexity, as elements are integrated rather than added as separate external components.
Solution Approach 2:
The patent combines rigid metallic components (connecting seat, cap) with flexible elastomeric materials (buffer pad, flexible liner) to create a composite fastening structure. This composite approach enhances shock-absorbing capability while maintaining relatively simple overall structure, as the different materials work together within the existing fastening geometry.
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 described structure effectively absorbs and buffers stress, reducing vibrations and maintaining signal quality by providing a stable and secure attachment to the preset plates, thus enhancing the performance of floating fasteners in absorbing external forces.
Implementation Method 1
the buffer pad and the flexible liner are flexibly held against the upper and lower surfaces of the preset first plate to absorb and buffer the stress transmitted to the preset first plate when the floating fastener vibrates
Implementation Method 2
a flexible liner attached with a bottom surface thereof to a top surface of the bottom plate, the flexible liner comprising a perforation placed outside the cylindrical portion of the base
Data Source
AI summary
A floating fastener with shock-absorbing structure includes a base having a cylindrical portion and a bottom plate and an abutment ring and an inner ring formed in the cylindrical portion, a fixing element having a head, a shank and locking portion, a flexible liner having a top-sided positioning embedding portion placed in a first fixing hole of a preset first plate, a positioning tube having a tube body and a protruding ring portion, and a buffer pad having a ring groove positioned on the protruding ring portion of the positioning tube. The assembly structure of the positioning tube and the buffer pad is placed outside the cylindrical portion of the base from top to bottom through the perforation of the positioning tube to form a positioning, and the bottom side of the buffer pad is held against the upper surface of the preset first plate.