Thin-Walled Elastic Roller for Stable Surface Speed
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Solution Overview
Problem
Existing elastic rollers are either too complex and costly, prone to creases, or suffer from instability in surface speed due to shear elasticity, making them unsuitable for applications requiring low load, lightweight, and stable surface speed.
Innovation Solution
The design features a thin-walled cylindrical pipe with flanges at both ends that deform integrally with the pipe under stress, eliminating the need for foamed bodies or rubber, and incorporating a high-friction surface coating to prevent shear elasticity, ensuring stable deformation and extended life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rubber or plastic foamed body is provided over a metal core to achieve elasticity, then the roller possesses reactive-force-producing elasticity, but the structure becomes complicated and cost increases
Solution Approach 1:
The invention extracts the elastic function from traditional rubber/plastic foamed bodies and implements it through a thin-walled cylindrical pipe structure that utilizes elastic deformation of the pipe wall itself, eliminating the need for separate elastic material layers
Solution Approach 2:
The thin-walled cylindrical pipe acts as a flexible shell structure that provides elasticity through its wall deformation, replacing the traditional approach of using thick rubber or foamed plastic layers while maintaining the elastic function
2Strength
If a group of small-bore elastic tubes are arranged at the outer peripheral portion of a shaft body and covered by a large-bore elastic tube, then elasticity is achieved, but the amount of deformation varies under constant load causing contact pressure fluctuation
Solution Approach 1:
The invention segments the elastic structure into multiple ribs radially arranged on the inner surface of the thin-walled pipe, where each rib independently deforms under load to provide stable and uniform elastic response
Solution Approach 2:
The rib structure dynamically adapts to applied loads through controlled deformation, maintaining consistent contact pressure by distributing the elastic response across multiple structural elements
3Force
If hollow thin-walled cylindrical pipes are supported by ring-like elastic bodies disposed in intervening fashion, then the pipe is supported, but shear deformation occurs causing increase in shear force that leads to failure or delamination
Solution Approach 1:
The invention merges the support function with the elastic deformation function by integrating the rib structure directly into the thin-walled pipe, eliminating separate ring-like elastic bodies and their associated shear stress problems
Solution Approach 2:
The invention uses a composite structure combining the thin-walled cylindrical pipe material with radially arranged ribs, creating an integrated composite element that provides both support and elastic deformation without shear failure
4Manufacturing precision
If the outside diameter is formed using a die, surface grinding, or the like to achieve precision, then dimensional accuracy is improved, but the manufacturing process becomes complex and costly
Solution Approach 1:
The invention performs preliminary forming of the thin-walled cylindrical pipe with integrated rib structures during the molding process, achieving the final precise geometry in one step without requiring subsequent die forming or surface grinding operations
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 configuration allows for elastic deformation at low loads, maintaining stable surface speed and reducing costs, while the high-friction coating enhances gripping capabilities and prevents surface scratches.
Implementation Method 1
a thin-walled cylindrical pipe (2a) which is capable of elastic deformation
Implementation Method 2
incorporating a high-friction surface coating to prevent shear elasticity, ensuring stable deformation and extended life
Data Source
Figure 1(a)~1(d)
Figure 2(a)~2(e)
Figure 3(a)~3(e)
AI summary
Provided is an elastic roller that is capable of elastic deformation at low load, that is lightweight and low-cost, and that is such that the surface speed of the roller has been made stable. At a drawing showing the view from the side of pipe 2 and flange 3 which make up roller 1, roller 1 in accordance with the present invention which has pipe 2 and flange 3 is supported by shaft 8 which is inserted therein along axis 8a of shaft 8, the situation being such that elastic deformation occurs upon being pressed downward by pressure P from pressure-applying body 11 above pipe 2. (a) in FIG. 6 is a drawing in which none of the four outermost ribs 7a disposed in outermost gap 6a between outermost ring 4a of flange 3 and middle ring 4b which is mutually adjacent thereto and toward the interior therefrom is present in the upper portion of pipe 2, being a drawing in which this is pressed downward by pressure P from pressure-applying body 11 above thin-walled cylindrical pipe 2a directly above a location in outside gap 6a which is intermediate between two mutually adjacent ribs 7a that are separated from each other so as to be disposed at left and right at outside gap 6a, and in which outermost ring 4a and thin-walled cylindrical pipe 2a at that location press upward in resilient fashion, and are indented therebelow by amount of indentation 12.