Directional Commercial Tire Tread for Wet and Winter Traction
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Solution Overview
Problem
Existing commercial vehicle tires face challenges in enhancing traction performance, particularly on ice, snow, and wet roads, with existing designs focusing on circumferential ribs rather than block treads.
Innovation Solution
The central tread area is designed with oblique grooves forming a V-shape across its width, terminating within the tread, and divided by cuts that create block-like profile structures with inclined grooves varying in angle to improve drainage and traction, especially under different driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the central tread area is provided with numerous slits and grooves to improve drainage on wet roads, then drainage performance is improved, but the tread structure becomes softer and less effective for traction on ice and snow
Solution Approach 1:
The central tread area is segmented into multiple block-like profile structures by dividing cuts and further cuts, creating a balanced structure that provides both drainage channels and stiff load-bearing blocks for winter traction
Solution Approach 2:
Different regions of the tread are given different properties: the block-like profile structures provide stiffness for winter traction while the grooves and cuts provide drainage channels, with each region optimized for its specific function
2Duration of action of stationary object
If the tread is designed with circumferential ribs instead of block treads, then wear resistance is improved, but traction performance on ice, snow, and wet roads deteriorates
Solution Approach 1:
The circumferential rib is segmented into block-like profile structures by dividing cuts and further cuts, combining the wear resistance of circumferential ribs with the traction benefits of block tread patterns
Solution Approach 2:
The tread structure is designed to be dynamically adaptable, with block-like structures that can deform under load to improve contact with the road surface while maintaining the overall circumferential rib structure for wear resistance
3Reliability
If further cuts are added to each block-like profile structure to improve drainage, then drainage capability is enhanced, but the block structures become less stiff and effective for cornering on snow and ice
Solution Approach 1:
The further cuts are designed with specific dimensions (width 0.4-1.6mm, depth 60-100% of tread depth) to provide sufficient drainage while maintaining adequate block stiffness, using partial action rather than complete segmentation
Solution Approach 2:
The width and depth parameters of the further cuts are optimized to achieve the right balance between drainage capability and block stiffness, with cuts extending 60-100% of tread depth but maintaining narrow width to preserve structural integrity
Data Source
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AI summary
The invention relates to a commercial vehicle tire with a directional tread (1) having a central tread area (3) which has block-like profile structures (3a) limited by division cuts (8), each of which is provided with further cuts (10).The central tread area (3) is provided with oblique grooves (7) extending towards each other in a V-shape across its maximum width (bb), wherein the division cuts (8) run between the oblique grooves (7) extending towards each other in a V-shape and a division cut (8) extends from the end of each oblique groove (7), wherein the further cuts (10) traverse the respective block-like profile structures (3a), are inclined with respect to the circumferential direction opposite to the oblique grooves (7) adjacent to the block-like profile structure (3a) and extend at angles (ε) to the axial direction, which increase stepwise from cut (10) to cut (10) starting from that further cut (10) which follows the corresponding division cut (8) against the rolling direction (R).