Tire Main and Sub-Kerfs for Wear-Resistant Drainage
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Solution Overview
Problem
Conventional tires experience a reduction in drainage and grip performance when the tread is worn out due to the degradation of tread kerfs, leading to compromised braking and running capabilities.
Innovation Solution
The tire design incorporates main kerfs and sub-kerfs, featuring a main groove and flow tube, along with an auxiliary groove and flow tube, which are arranged radially and formed in a zigzag shape to maintain drainage and braking performance even when the tread is worn, by enhancing air flow and frictional force through the use of auxiliary grooves and flow tubes with specific diametric relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single main groove and flow tube structure is used to improve drainage performance, then drainage capability is enhanced, but the structure becomes vulnerable to wear degradation
Solution Approach 1:
The single main groove and flow tube structure is segmented into a main groove with main flow tube and multiple auxiliary grooves with auxiliary flow tubes. This segmentation creates redundant drainage pathways, so when the main structure wears, the auxiliary structures continue to provide drainage functionality, thereby maintaining reliability over extended service life.
2Productivity
If the flow tube inner diameter is increased to improve air flow and drainage speed, then drainage performance is enhanced, but the structural complexity increases
Solution Approach 1:
Instead of using one large flow tube, the system segments the flow capacity across multiple auxiliary flow tubes with smaller diameters. Each auxiliary flow tube has an inner diameter greater than its corresponding auxiliary groove width but smaller than the main flow tube inner diameter, distributing the drainage function while managing structural complexity.
Solution Approach 2:
Different flow tubes are assigned different inner diameters based on their specific functions and positions. The main flow tube has a larger diameter for primary drainage, while auxiliary flow tubes have progressively smaller diameters, optimizing local flow characteristics without uniformly increasing overall structural complexity.
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 ensures consistent drainage and braking performance by maintaining frictional force and air flow, even as the tread wears, by utilizing auxiliary grooves and flow tubes that take over drainage functions when the main structures are worn, thus preventing a decline in tire performance.
Implementation Method 1
improving a flow of air and drainage performance
Implementation Method 2
The air within the tire absorbs the shock caused by the unevenness of the road surface by buffering action like a spring
Implementation Method 3
exhibit drainage and braking capabilities when the tread block is worn out
Data Source
AI summary
The present invention relates to a tire with main kerfs and sub-kerfs, and more particularly, to a tire with main kerfs and sub-kerfs, which maintains drainage performance and running and braking performance by additionally including an auxiliary groove and improves a flow of air and drainage performance by including an auxiliary flow tube.