Pneumatic Tire Tread With Wave-Like Underline Contour
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Solution Overview
Problem
Pneumatic vehicle tires face a challenge in stabilizing certain circumferential areas without compromising aquaplaning properties, as traditional measures for stabilization often impair water drainage and handling performance.
Innovation Solution
A tread profile with a three-wave elevation undercarriage contour, where the middle elevation covers 50% to 60% of the ground contact area width, and lateral elevations 20% to 30%, ensuring localized stabilization and improved rigidity while maintaining effective water drainage through adapted groove depth profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional measures are used to stabilize circumferential areas of the tread, then the tread stability and rigidity are improved, but the water drainage capability and aquaplaning properties are impaired
Solution Approach 1:
The patent applies local quality by creating a three-wave elevation underline contour with different elevation widths (middle elevation 50-60% of contact patch width, lateral elevations 20-30%) that provide localized stabilization. This allows specific circumferential areas to have enhanced rigidity while other areas maintain groove depth for water drainage, resolving the contradiction between overall stability and local water evacuation capability.
2Ease of manufacture
If the underline contour is designed without bulges or deformations, then the manufacturing simplicity is maintained, but the tread stability in circumferential areas is insufficient
Solution Approach 1:
The patent introduces curvature into the underline contour by designing a wave-like shape with three elevations instead of a straight or simple circular contour. This curved, wave-shaped underline contour (with radially highest points 1.0-3.0 mm from tread periphery) provides structural support and stability while remaining manufacturable through conventional tire molding processes.
Data Source
Figure 1
AI summary
A radial-type pneumatic tire with a profiled, grooved tread (1), wherein an envelope extending along the groove bases forms a continuous underline contour (5) over the circumference of the tread (1). The underline contour (5) extends axially and across the width (B) of the tread (1) in a wave-like shape, which is composed of at least three protrusions (6), wherein the radially lowest points of the wave troughs are located at the tread depth between the protrusions (6) and wherein the radially highest points of the protrusions (6) are spaced 1.0 mm to 3.0 mm from the tread periphery.