Shoulder Tread Drainage Groove Layout for Wet Grip and Low Noise
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Solution Overview
Problem
Existing tire treads struggle to balance stability, noise reduction, and wet-weather performance, particularly in achieving optimal water drainage without compromising structural integrity and noise generation.
Innovation Solution
The tire design incorporates a circumferentially extending drainage groove that opens into an axially inner end of a transverse groove, without connecting to it, allowing for efficient water drainage while maintaining structural integrity and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large negative volume is used in the tire tread, then water drainage performance is improved, but tire noise increases and driving stability deteriorates
Solution Approach 1:
The drainage groove is segmented into multiple sections: a first groove running in the transverse direction, a second groove also in the transverse direction, and a circumferential drainage groove connecting them. This segmentation allows water to be channeled efficiently while maintaining smaller overall negative volume compared to continuous circumferential grooves, thereby reducing noise while improving drainage.
Solution Approach 2:
The drainage groove transitions from a purely transverse orientation to include a circumferential component. The circumferential drainage groove connects the inner ends of the first and second grooves, creating a three-dimensional drainage path that enhances water removal efficiency without requiring excessive groove volume, thus balancing drainage performance with noise reduction.
2Productivity
If a large negative volume is used in the tire tread, then water drainage performance is improved, but driving stability deteriorates
Solution Approach 1:
The groove system is divided into transverse grooves (first and second grooves) and a circumferential drainage groove, creating discrete drainage zones rather than continuous large-volume grooves. This segmentation maintains structural integrity and driving stability while providing sufficient drainage capacity through the coordinated arrangement of multiple groove sections.
Solution Approach 2:
The groove design concentrates drainage functionality in specific localized areas (shoulder regions with transverse and circumferential grooves) rather than distributing large-volume grooves across the entire tread. This localized approach provides effective water drainage where most needed while preserving stability in other critical areas of the tire structure.
3Productivity
If additional intersections and junctions are added to transverse grooves, then water drainage is improved, but structural integrity deteriorates and noise increases
Solution Approach 1:
Instead of creating multiple intersections and junctions in transverse grooves, the design uses a separate circumferential drainage groove that connects to the inner ends of transverse grooves. This segmented approach provides effective water drainage pathways without compromising the structural integrity of the tread blocks, as the transverse grooves remain simple and uninterrupted.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances wet-weather handling, limits noise generation, and maintains driving stability by optimizing groove arrangement and depth profiles.
Implementation Method 1
a circumferentially extending drainage groove that opens into an axially inner end of a transverse groove, without connecting to it, allowing for efficient water drainage
Data Source
Figure 1
Figure 2~3
AI summary
Vehicle tire (1) with at least one first and one second groove (2, 3), wherein the first and the second groove (2, 3) are formed in a shoulder region (4) of the vehicle tire (1) and extend predominantly in the transverse direction, wherein at least one drainage groove (5) extending predominantly in the circumferential direction is arranged such that the drainage groove (5) opens into an axially inner end of the first groove (2). The drainage groove (5) extends from the first groove (2) in the circumferential direction past an axially inner end of the second groove (3), wherein the drainage groove (5) is not connected to the second groove (3).