Pneumatic Tire Extension Blocks Sidewall Configuration
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Solution Overview
Problem
Conventional pneumatic tires face challenges in balancing performance characteristics for both on-road and off-road use, particularly in vehicles that require mud traction, treadwear, on-road handling, off-road handling, wet traction, and dry traction, as the performance requirements often conflict with each other.
Innovation Solution
The tire features individualized sidewalls with extension blocks arranged in concentric rings of different configurations on each sidewall, providing varying traction characteristics, with blocks being frustrum-shaped and inclined at specific angles to optimize traction and handling in different conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional tread patterns with circumferential grooves and inclined grooves are used, then the tire can provide basic traction and handling, but it cannot simultaneously optimize performance for both on-road and off-road use
Solution Approach 1:
The patent applies local quality by creating different sidewall configurations with extension blocks at specific locations (shoulder regions) while maintaining conventional tread patterns in other areas. This allows the tire to have specialized off-road traction features where needed without compromising overall on-road handling, thus optimizing performance for both environments simultaneously
Solution Approach 2:
The patent segments the tire sidewall into distinct regions with different block configurations. The extension blocks are positioned in concentric rings at the shoulder regions, creating segmented zones that provide enhanced off-road traction without affecting the central tread areas responsible for on-road performance
2Reliability
If extension blocks are added to the sidewall, then traction characteristics are enhanced, but the sidewall structure becomes more complex
Solution Approach 1:
The extension blocks are positioned asymmetrically in concentric rings at the shoulder regions rather than uniformly across the entire sidewall. This asymmetric placement provides enhanced traction where most needed for off-road performance while minimizing structural complexity in regions where it would provide least benefit
Data Source
AI summary
A tire has a tread and a pair of opposing shoulders. In the first sidewall, a series of extension blocks creates a pair of concentric rings. In the second sidewall, a different configuration of extension blocks may be present. The second sidewall has alternating extension blocks where one of the blocks has a portion that is located radially inward of the other block.