Pneumatic Tire Side Ridge Anchoring Wax Durability
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Solution Overview
Problem
Pneumatic tire waxes applied to the tire side portions tend to come off due to wind and rain, reducing their protective and polishing effects, necessitating frequent reapplication and lacking persistence.
Innovation Solution
A pneumatic tire design featuring a ridge region on the tire side portion with specific geometric parameters, including pitch length, height, and angle, which enhances the durability and coatability of the wax, preventing it from peeling off while maintaining its protective and polishing effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wax is applied to the tire side portion to protect and polish the surface, then the protective and polishing effects are improved, but the wax comes off due to wind and rain over time, reducing the persistence of the effect
Solution Approach 1:
The tire side surface is segmented into multiple ridges with specific pitch lengths (0.52-1.50 mm) and height-to-width ratios (0.60-1.40), creating a textured surface structure that mechanically anchors the wax. This segmentation prevents the wax from forming a continuous film that can easily peel off, thereby improving wax durability while maintaining protective effects
Solution Approach 2:
The ridge structure creates local variations in surface properties, with peak regions providing anchoring points for wax and valley regions allowing wax accumulation. This local quality differentiation ensures that wax adheres more strongly at critical locations, enhancing persistence without compromising overall protective function
2Ease of operation
If the tire side portion is made smooth to enhance wax coatability, then the ease of wax application is improved, but the wax comes off more easily due to lack of mechanical anchoring
Solution Approach 1:
The invention transitions from a two-dimensional smooth surface to a three-dimensional ridged surface with controlled geometry. The ridges have specific dimensions (pitch 0.52-1.50 mm, height-to-width ratio 0.60-1.40) that create mechanical interlocking in the vertical dimension, improving wax adhesion while the overall surface remains regular enough to maintain good coatability
Data Source
AI summary
A pneumatic tire includes a tread portion, a tire side portion, and a bead portion and includes a ridge region in a predetermined region of the tire side portion. The ridge region is formed with a plurality of ridges arranged. The plurality of ridges periodically protrudes from a base surface in parallel to one another. A pitch length between the ridges that are adjacent in a cross-sectional view of the plurality of ridges along an orthogonal direction, which is a direction orthogonal to an extension direction, is 0.52 mm or more and 1.50 mm or less. A ratio of a height to a width of one of the ridges along the orthogonal direction is 0.60 or more and 1.40 or less.