Intersecting Tire Sipe Pattern for Chunking-Resistant Traction
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Solution Overview
Problem
Tire treads with sipes are prone to tearing and chunking due to the weakening effect of sipes, which compromises their durability and traction performance, especially under side scrub conditions.
Innovation Solution
A tire tread design featuring a plurality of tread elements with intersecting sipes extending at different non-zero angles, creating a pattern that enhances resistance to chunking and cracking by distributing stress and improving traction without compromising the tread's edge integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If sipes are provided to the tire tread to improve traction, then traction performance is improved, but the tread blocks become weaker and more susceptible to tearing or chunking
Solution Approach 1:
The sipe pattern is segmented into multiple sets (first set, second set, third set) with different orientations and angles relative to the lateral axis. Each set of sipes is positioned at specific angles (e.g., first angle, second angle, third angle) to distribute stress differently across the tread blocks, preventing any single orientation from causing excessive weakening while maintaining multi-directional traction capabilities
Solution Approach 2:
The sipe pattern employs asymmetric positioning and angular orientations relative to the lateral axis of the tire tread. The different sets of sipes are arranged with different angles and positions, creating an asymmetric pattern that optimizes both traction in multiple directions and structural reinforcement of tread blocks by avoiding uniform stress distribution
2Object-generated harmful factors
If sipes are cut or molded into the tire tread to improve traction, then water film cutting ability is improved, but the tread blocks become more susceptible to tearing or chunking at edges
Solution Approach 1:
The sipe pattern divides the water film cutting function across multiple sets of sipes oriented at different angles. This segmentation allows each set to handle specific directional water displacement while the collective pattern distributes the mechanical stress, preventing edge tearing and chunking that would result from a single concentrated sipe orientation
Solution Approach 2:
The sipe pattern extends the water film cutting capability into multiple angular dimensions by providing sipes at different orientations (first angle, second angle, third angle) relative to the lateral axis. This multi-dimensional arrangement maintains effective water displacement in various directions while distributing stress across the tread structure, preserving edge integrity
3Ease of operation
If a sipe pattern is provided within tread elements to improve traction, then deformation facilitation is improved, but hysteresis loss increases due to weakened tread blocks
Solution Approach 1:
The sipe pattern segments the deformation function across multiple sets of sipes with different orientations. This allows the tread blocks to deform more easily in multiple directions by distributing the deformation demand across different sipe orientations, reducing the energy loss associated with any single deformation event while maintaining overall flexibility
Data Source
AI summary
A tire tread is provided. The tire tread includes a plurality of tread elements positioned on a tire tread surface so as to comprise a tread pattern. The tire tread also includes a plurality of grooves provided between the plurality of tread elements. A first set of sipes is provided to the tire tread, the first set of sipes extending from a longitudinal axis of the tire tread and toward a first edge of the tire tread at a first non-zero angle with respect to a lateral axis of the tire tread. A second set of sipes is also provided to the tire tread, the second set of sipes extending from the longitudinal axis and toward the first edge of the tire tread at a second non-zero angle with respect to the lateral axis, the second set of sipes intersecting the first set of sipes.