Non-Directional Tire Tread Layout to Reduce Lateral Pull
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Solution Overview
Problem
Existing non-directional tire tread sculptures with continuous ribs face issues of lateral pull under driving and braking torque, compromising dry braking and handling performance while maintaining snow traction.
Innovation Solution
A non-directional tire tread design featuring a center rib with angled sipes and shoulder ribs, oriented at acute angles to reduce lateral pull, combined with circumferential grooves for improved hydro performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous rib design is implemented across the entire width of the tire summit, then dry braking and handling performance are improved, but lateral pull increases under driving or braking torque
Solution Approach 1:
The continuous rib design is segmented by introducing circumferential grooves and sipes that break the rib continuity. These segments reduce lateral pull while maintaining dry braking performance through the combined action of multiple smaller rib segments rather than a single continuous rib.
Solution Approach 2:
Different regions of the tread are given different rib configurations. The center rib has a specific angle and segmentation pattern, while shoulder ribs have different angles and continuity. This local differentiation allows each region to optimize for its specific function, reducing overall lateral pull while maintaining dry braking.
2Object-affected harmful factors
If the tread sculpture is angled to reduce noise, then noise levels are reduced, but lateral pull increases
Solution Approach 1:
The angled sculpture is segmented into multiple smaller angled elements rather than a single continuous angled rib. This segmentation reduces lateral pull while preserving the noise-reducing angled configuration through the distributed pattern of smaller features.
3Object-generated harmful factors
If circumferential grooves are added to reduce lateral pull, then lateral pull is reduced, but dry braking performance deteriorates
Solution Approach 1:
The parameters of the circumferential grooves are optimized for this invention - their depth, width, spacing, and angular orientation are specifically tuned to reduce lateral pull while maintaining sufficient rib surface area for dry braking performance. The groove dimensions are carefully balanced to achieve both objectives simultaneously.
4Ease of manufacture
If a non-directional design is used to simplify manufacturing, then manufacturing complexity is reduced, but lateral pull increases
Solution Approach 1:
The tread features asymmetric angular orientations that are arranged in a non-directional pattern. Individual ribs and sipes have specific asymmetric angles, but the overall pattern is symmetric in both rotation directions, allowing the tire to be used in either direction while reducing lateral pull through the asymmetric feature geometry.
Data Source
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AI summary
A tire tread sculpture designed to achieve a high level of dry braking and great handling while not sacrificing snow traction comprising a sculpture design implementing a rib design across the entire width o the tire tread while reducing lateral pull due to the effect of the tread sculpture, the tread sculpture having a plurality of lateral shoulder region features at a first angle and a center rib with a plurality of center features at an angle opposite to the shoulder region features.