Pneumatic Tire Reinforcing Layer With Gaps for Grip and Tire Life
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Solution Overview
Problem
Conventional tires improve steering stability at high speeds but fail to enhance gripping force and tire life, especially in sporting driving conditions.
Innovation Solution
A tire design featuring a belt layer and a two-layer reinforcing structure, where the inner reinforcing layer has continuous strip members and the outer reinforcing layer has gaps between strip members, enhancing ground contact area and suppressing diameter growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a reinforcing layer with continuous strip members is provided to suppress diameter growth and improve steering stability, then steering stability is improved, but gripping force and tire life are not sufficiently enhanced
Solution Approach 1:
The reinforcing layer is divided into multiple independent strip members arranged side by side in the tire width direction, with gaps between adjacent strip members. This segmentation allows the tread to expand more effectively during braking and cornering, improving gripping force while maintaining steering stability through the overall reinforcing structure.
Solution Approach 2:
Different regions of the reinforcing layer have different structures: the center portion has strip members arranged to allow tread expansion for improved gripping, while the shoulder portions maintain continuous structure for steering stability. This local differentiation optimizes both gripping force and steering stability in their respective functional zones.
2Stability of the object's composition
If strip members are arranged closely without gaps to maintain structural integrity, then steering stability is maintained, but ground contact area and gripping force are reduced
Solution Approach 1:
The reinforcing layer uses discrete strip members with gaps between them, allowing the tread to expand radially outward during dynamic operations. This increases the ground contact area and improves gripping force while the strip members maintain overall structural integrity through their collective arrangement.
Solution Approach 2:
The gaps between strip members allow the tread to dynamically expand and contract based on operational conditions. During normal driving, the structure maintains integrity; during braking or cornering, the tread expands to increase ground contact area, optimizing gripping force.
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 improves gripping force and extends tire life while maintaining high steering stability, particularly in high-speed sports driving, by increasing the ground contact area and reducing diameter growth.
Implementation Method 1
the diameter growth of the tire due to the centrifugal force generated during high-speed driving is suppressed
Implementation Method 2
strip-like member (strip member) in which a plurality of cords are rubbed
Data Source
AI summary
A pneumatic tire is provided with a belt layer and a reinforcing layer provided outside the belt layer in tire radial direction. The reinforcing layer has an inner reinforcing layer in which a strip member having a plurality of cords is wound along tire circumferential direction, and an outer reinforcing layer in which the strip member having a plurality of cords is wound along the tire circumferential direction and is provided outside tire radial direction of the inner reinforcing layer. The outer reinforcing layer has a gap between adjacent strip members in tire width direction.