Studded Tyre Layout With Variable Stud Protrusion for Lasting Grip
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Studded tires experience reduced grip over time due to wear of studs, leading to inadequate traction and steering control, especially on icy and snowy roads.
Innovation Solution
The design of studded tires with varying stud protrusions in the center and shoulder areas, where center area studs have higher protrusions than shoulder area studs, combined with specific stud configurations and tire structures to optimize grip and reduce wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If studs are installed in tread blocks, then grip on ice is improved, but grip deteriorates over time due to wear
Solution Approach 1:
The patent applies local quality by differentiating stud protrusion heights between center and shoulder areas. Center area studs have higher protrusion (1.0-1.3mm) while shoulder area studs have lower protrusion (0.6-0.9mm). This local differentiation optimizes grip in the center area where it is most needed while reducing road wear and maintaining acceptable grip in shoulder areas throughout the tire's lifetime.
2Reliability
If studs have high protrusion, then grip is improved, but road wear increases
Solution Approach 1:
The patent reduces road wear by implementing local quality with varying stud protrusions. Shoulder area studs have lower protrusion (0.6-0.9mm) compared to center area studs (1.0-1.3mm), which minimizes road wear in shoulder areas while maintaining sufficient grip. This local differentiation balances grip performance with road wear reduction.
3Ease of manufacture
If uniform stud protrusion is used, then manufacturing is simplified, but grip performance deteriorates due to wear distribution
Solution Approach 1:
The patent optimizes grip consistency throughout the tire's lifetime by applying local quality with differentiated stud protrusions. Center area studs with higher protrusion (1.0-1.3mm) maintain grip as they wear, while shoulder area studs with lower protrusion (0.6-0.9mm) are designed to wear down to an optimal height. This local differentiation ensures consistent grip performance across different tire usage conditions.
Data Source
Figure 1a~1f
Figure 1g~1j
Figure 2a~2b
AI summary
The invention relates to a tyre (200) comprising a tread (210) having tread blocks (220); a plurality of stud holes (250); and a plurality of studs (100) installed in at least some of the stud holes (250). Studs (100b) in a centre area (CR) of the tyre (200) have higher protrusion from a surface of the tread block (220) than studs (100a) in a shoulder area (SR1, SR2) of the tyre (200).