Pneumatic Tire Side Protector Segmentation
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Solution Overview
Problem
Existing pneumatic tires face challenges in improving mud performance and heat accumulation while maintaining cut resistance, as conventional side protectors either increase heat buildup or fail to effectively grip and release mud.
Innovation Solution
A pneumatic tire design featuring alternately arranged S-shaped and L-shaped first and second protect ribs on the sidewall, with varying radial lengths and angles, which increase the surface area for heat dissipation and enhance mud grip and release, while forming intricate concavities for cut resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a side protector is formed as a rib extending continuously in the tire circumferential direction, then cut resistant performance is improved, but heat accumulation increases due to increased rubber volume
Solution Approach 1:
The continuous rib structure is divided into multiple segments (first protect ribs and second protect ribs) arranged alternately in the tire circumferential direction. This segmentation reduces the continuous rubber volume while maintaining protective coverage, thereby decreasing heat accumulation while preserving cut resistance.
Solution Approach 2:
Different regions of the side protector are designed with different rib configurations. The first protect ribs have an S-shaped main part while the second protect ribs have an L-shaped main part, creating local variations in structure that optimize both heat dissipation and protective performance in different circumferential positions.
2Temperature
If radial grooves are added to the side protector to decrease rubber volume and improve heat dissipation, then heat accumulation decreases, but mud performance becomes insufficient
Solution Approach 1:
The protect ribs incorporate curved geometries (S-shaped and L-shaped main parts) instead of straight lines. These curved forms create effective mud-gripping surfaces that enhance mud performance while the overall segmented structure maintains reduced rubber volume for heat dissipation.
3Productivity
If the side protector structure is made more complex to improve mud performance, then mud grip capability increases, but heat accumulation increases due to increased rubber volume
Solution Approach 1:
The side protector is segmented into alternating first and second protect ribs with different shapes. This segmentation allows complex mud-gripping geometries to be distributed across multiple smaller elements rather than one large continuous structure, maintaining effective mud interaction while reducing overall rubber volume for heat generation.
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 design improves mud performance by enhancing grip and preventing spin on slippery surfaces, reduces heat accumulation through increased surface area and disturbed airflow, and provides effective cut resistance by preventing damage from sharp objects.
Implementation Method 1
the side protector comprises first protect ribs and second protect ribs arranged alternately in the tire circumferential direction, the first protect ribs each have a main part extending radially inwardly from a radially outer edge of the side protector in the form of an S shape, and the second protect ribs each have a main part extending radially inwardly from the radially outer edge of the side protector in the form of an L shape
Implementation Method 2
when running on a rough road, the grooves can grip the mud to improve the mud performance of the tire
Data Source
AI summary
A pneumatic tire has a side protector 9 comprising first protect ribs 11 and second protect ribs 12 arranged alternately in the circumferential direction. The first protect ribs 11 each have a main part 13 extending radially inwardly in the form of an S shape. The second protect ribs 12 each have a main part 14 extending radially inwardly in the form of an L shape.