Shoulder Block Tread Recesses for Mud, Wet, and Heat Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tires face challenges in improving mud performance, wet performance, and heat durability, particularly on muddy terrain.
Innovation Solution
The tire design features a tread portion with shoulder lateral grooves and shoulder blocks, including a recessed portion in the second tread surface and a recess in the second side wall surface, which enhances shearing force, expels mud and water, and improves heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tread designs are used, then manufacturing is simple, but mud performance and wet performance are insufficient
Solution Approach 1:
The tread portion is segmented into multiple functional elements: shoulder blocks with recessed portions, side wall surfaces with recesses, and lateral grooves. This segmentation creates distinct zones for mud accumulation, shearing action, and water evacuation, improving mud and wet performance through specialized functions in each segment.
Solution Approach 2:
The invention extends the tread structure from a two-dimensional surface into the third dimension by forming recessed portions in the shoulder blocks and recesses in the side wall surfaces. These three-dimensional features create depth for mud accumulation and enhance the shearing effect, improving performance beyond conventional flat tread designs.
2Reliability
If conventional tread designs are used, then manufacturing is simple, but wet performance and heat durability are insufficient
Solution Approach 1:
The tread is divided into water evacuation channels through lateral grooves and recessed portions that create dedicated pathways for water removal. This segmentation separates water evacuation functions from traction functions, allowing optimized performance in both areas despite increased structural complexity.
Solution Approach 2:
Water and mud are extracted from the tread contact patch through the lateral grooves and recesses. The design actively removes harmful substances (water and mud) that would otherwise degrade wet performance and heat dissipation, separating the evacuation function from the traction function.
3Reliability
If conventional tread designs are used, then structure is simple, but heat durability is insufficient
Solution Approach 1:
Heat is extracted from the tread through enhanced convection channels created by the recessed portions and lateral grooves. These features increase surface area and improve airflow through the tread, actively removing heat from the contact patch to improve heat durability.
Solution Approach 2:
The heat dissipation system transitions from a two-dimensional surface to a three-dimensional structure with recesses and grooves. This dimensional change creates internal channels for heat convection, significantly improving heat removal capability compared to conventional flat tread designs.
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
The design improves mud performance, wet performance, and heat durability by increasing shearing force, expelling mud and water effectively, and enhancing heat dissipation.
Implementation Method 1
the second tread surface includes a recessed portion which is at least partially recessed inward of the first tread surface... a recess hollowed inward in a tire axial direction is formed in the second side wall surface... As a result of adopting the above-described configuration, the present disclosure can improve mud performance
Implementation Method 2
a plurality of shoulder lateral grooves and a plurality of shoulder blocks demarcated by the plurality of shoulder lateral grooves are formed in the tread portion... the recess extends in a tire circumferential direction from one shoulder lateral groove adjacent to the second side wall surface... improve wet performance
Implementation Method 3
a recess hollowed inward in a tire axial direction is formed in the second side wall surface, and the recess extends in a tire circumferential direction from one shoulder lateral groove adjacent to the second side wall surface... improve heat durability
Data Source
AI summary
A tire 1 includes a first shoulder block 5. The first shoulder block 5 includes a first portion 7 that includes a first tread surface 11 forming a first tread end T1 and a first side wall surface 12 extending inward in a tire radial direction from the first tread end T1, and a second portion 8 that includes a second tread surface 15 forming a second tread end T2 and a second side wall surface 16 extending inward in the tire radial direction from the second tread end T2. The second tread surface 15 includes a recessed portion 18 which is at least partially recessed inward of the first tread surface 11 in the tire radial direction such that the second tread end T2 is located inward of the first tread end T1 in the tire radial direction. A recess 19 is formed in the second side wall surface 16. The recess 19 extends in a tire circumferential direction from a shoulder lateral groove 3, and has a bottom portion 20 in the first shoulder block 5.