Tire Tread Groove Structure for Heat Dissipation in Thick Gauges
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Solution Overview
Problem
Thick tread gauges in heavy-load tires lead to increased heating temperatures in the tread portion, degrading the durability of structural members and impairing tire function.
Innovation Solution
The tire design features circumferential and lateral grooves with narrow grooves and projecting surfaces that enhance heat dissipation by creating a forced air flow through narrow grooves when the tire contacts the ground, reducing heat generation in the tread portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the tread gauge is made thick to improve wear life, then the wear resistance is improved, but the heating temperature in the tread portion increases which degrades the durability of structural members
Solution Approach 1:
The tread surface is segmented into multiple blocks separated by circumferential grooves, lateral grooves, and narrow grooves. This segmentation creates independent cooling channels that allow air to flow through the tread portion, dissipating heat generated during operation while maintaining sufficient rubber thickness for wear resistance.
Solution Approach 2:
Air is introduced as an intermediary cooling medium that flows through the narrow grooves and circumferential grooves. This air flow acts as a heat carrier, removing excess heat from the tread portion and belt structure without requiring reduction in tread gauge thickness.
2Duration of action of stationary object
If the tread gauge is made thick to improve wear life, then the wear resistance is improved, but the durability of structural members such as belt is degraded
Solution Approach 1:
The groove system segments the tread and belt structure into heat-isolated zones. The narrow grooves extend through the tread to the belt, creating thermal pathways that prevent heat accumulation in the belt while maintaining the overall structural integrity and thickness required for durability.
Solution Approach 2:
The invention utilizes pneumatic cooling by introducing air flow through the groove system. This pneumatic cooling mechanism removes heat from the belt and internal tire structures without compromising their thickness or structural durability, allowing the tread gauge to remain thick for wear resistance.
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 effectively suppresses heat generation in the tread portion, thereby improving the durability of the tire even when the tread rubber thickness is increased.
Implementation Method 1
enhance heat dissipation by creating a forced air flow through narrow grooves when the tire contacts the ground
Implementation Method 2
enhance heat dissipation by creating a forced air flow through narrow grooves
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
A tire including: circumferential grooves each formed along a circumferential direction of a tire; lateral grooves provided at predetermined intervals along the circumferential direction of the tire, each of the lateral grooves having one end being opened to a side of the tire and the other end being communicated with the circumferential groove; and narrow grooves provided in blocks defined by the circumferential grooves and the lateral grooves, each of the narrow grooves having one end being opened to the side of the tire and the other end being communicated with the circumferential groove, in which the tire includes a projecting surface that projects, at a position more to one side or the other side in the circumferential direction of the tire than the narrow groove that is opened to the tire side, further to an outer side in a tire width direction than a tire side shape to which the narrow groove is opened, and in which the projecting surface extends in a tire radial direction from a ground contact end so as to include a groove bottom of the narrow groove.