Pneumatic Tire Sidewall Serration for Water Cleaning
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Solution Overview
Problem
Existing pneumatic tires lack both high visibility and effective cleaning performance, particularly on the sidewall portions, where deposits can be difficult to remove without using organic cleaning agents, which can deteriorate the rubber and harm the environment.
Innovation Solution
A pneumatic tire design featuring a serration region on the sidewall with specific geometric parameters, including parallel ridges and plane portions, optimized for improved visibility and cleaning performance using only water, enhancing hydrophilic properties and self-cleaning effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an organic cleaning agent is used to remove deposits on the tire side portion, then cleaning performance is improved, but the rubber deteriorates and environmental harm occurs
Solution Approach 1:
The tire surface structure enables self-cleaning through water alone, without requiring external cleaning agents. The serration region with specific ridge geometry allows water to automatically remove deposits during normal washing, making the cleaning process self-sufficient and eliminating the need for harmful chemicals
Solution Approach 2:
The invention changes the physical parameters of the tire surface by creating a serration region with specific geometric characteristics (ridge length Lb of 0.5-0.7mm, height RH of 0.08-0.15mm, and Lr/Lb ratio of 1.2-2.0). These parameter changes enable the surface to interact with water in a way that enhances cleaning performance without requiring chemical agents
2Illumination intensity
If the sidewall surface is made smooth to improve appearance, then visibility of indicators is improved, but cleaning performance deteriorates
Solution Approach 1:
The invention applies local quality by creating a serration region with specific geometric features in a predetermined area of the sidewall, while maintaining smoothness in other areas. This localized structuring allows the tire to have both good visibility (through smooth indicator areas) and good cleaning performance (through the serrated cleaning region)
Solution Approach 2:
The sidewall surface is segmented into different functional regions: a serration region with parallel ridges for cleaning purposes, and a plane portion for visibility. This segmentation allows each region to optimize its specific function while working together as a unified system
3Ease of operation
If a serration region with parallel ridges is provided on the sidewall to improve cleaning performance, then water can remove deposits more easily, but the structure becomes more complex
Solution Approach 1:
The serration region creates a dynamic interaction between water flow and the tire surface. The specific ridge geometry (Lb=0.5-0.7mm, RH=0.08-0.15mm, Lr/Lb=1.2-2.0) allows water to dynamically wet and flow across the surface, automatically removing deposits without requiring complex mechanical cleaning mechanisms
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 tire achieves enhanced visibility and cleaning performance by allowing water to easily wet and remove deposits, while maintaining the integrity of the rubber and minimizing environmental impact.
Implementation Method 1
enhancing hydrophilic properties and self-cleaning effects
Implementation Method 2
allowing water to easily wet and remove deposits
Data Source
AI summary
A pneumatic tire includes a serration region in a predetermined region of a sidewall portion. The serration region is formed by arranging a plurality of ridges, the plurality of ridges protruding from a base surface in parallel to each other and being periodically arranged. A length of one cycle of the plurality of ridges along the base surface is 0.5 mm or more and 0.7 mm or less. The pneumatic tire includes a plane portion surrounded by the serration region.