Pipe Stanchion Mounting Structure for Vehicle Noise Reduction
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Solution Overview
Problem
Conventional pipe stanchion mounting structures in vehicles experience stress concentration and noise generation due to assembly gaps and elastic deformation, leading to screw loosening and noise during vehicle operation, particularly in eco-friendly vehicles.
Innovation Solution
A pipe stanchion mounting structure with an upper mounting section that integrally fixes the upper end to the roof using a screw part with a thread extension and a nut ring fastener, and a lower mounting section that vertically movably couples the lower end to the floor, utilizing a compression member to absorb relative displacements and prevent noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pipe stanchion is mounted using a conventional structure with assembly gaps, then the height difference between floor and roof can be accommodated, but stress concentration and noise generation occur during vehicle operation
Solution Approach 1:
A vibration damping member is introduced as an intermediary element between the pipe stanchion and the mounting bracket. This mediator absorbs vibrations and reduces noise generation while maintaining the ability to accommodate height differences through the compressible nature of the damping material
Solution Approach 2:
The assembly gap, which originally caused harmful stress concentration and noise, is converted into a beneficial space that accommodates the vibration damping member. The compressible damping material transforms the harmful relative displacement into a beneficial vibration-absorbing mechanism
2Stability of the object's composition
If the pipe stanchion is mounted with fixed coupling, then structural stability is improved, but noise and stress concentration occur due to elastic deformation of the vehicle body
Solution Approach 1:
The mounting structure transitions from a static fixed coupling to a dynamic system where the vibration damping member can compress and expand. This dynamic characteristic allows the structure to maintain stability while adapting to elastic deformations of the vehicle body during operation
Solution Approach 2:
The vibration damping member is pre-installed in the assembly gap to provide beforehand cushioning against stress concentration. This protective element is positioned in advance to absorb and mitigate the harmful effects of elastic deformation before they can cause damage
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 solution effectively prevents noise and enhances the quietness and durability of the vehicle by ensuring secure fixation and movement absorption, reducing stress concentration and noise generation between the pipe stanchion and mounting structures.
Implementation Method 1
the floor and roof are elastically deformed according to the curvature of the road surface, so that the mounting structures mounted on the floor and roof, respectively, to mount both ends of the pipe stanchion may be relatively displaced to each other
Data Source
AI summary
A pipe stanchion mounting structure includes an upper mounting section configured to fixedly mount an upper end of a pipe stanchion on an upper part of a vehicle body, and a lower mounting section configured to mount a lower end of the pipe stanchion on a lower part of the vehicle body in a vertically movable manner, wherein the upper mounting section includes a first mounting bracket fixedly fastened to the upper part of the vehicle body, and a screw part integrally formed on an upper side of the pipe stanchion so as to be fixedly screwed into the first mounting bracket.