Tire Ridges with Overlapping Extending Portions for Light Reflection Suppression
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Solution Overview
Problem
Existing tire technologies face challenges in moldability and durability of pattern protrusions, particularly with fibrous protrusions that are difficult to mold and prone to abrasion, while also experiencing unwanted light reflection.
Innovation Solution
A tire design featuring a pattern of ridges with main body and extending portions that overlap and extend in different directions, arranged at specific heights and pitches to attenuate light reflection and enhance moldability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If protrusions are formed on the tire surface to improve visibility, then light reflection is suppressed, but rubber flow into mold holes becomes difficult and moldability deteriorates
Solution Approach 1:
The invention changes the geometric parameters of the protrusions by specifying a height of 0.2mm to 0.5mm and pitch of 0.15mm to 0.35mm. These parameter optimizations enable rubber to flow into the mold cavities while maintaining the light reflection suppression effect, thus resolving the contradiction between visibility improvement and moldability
2Illumination intensity
If protrusions are formed to suppress light reflection, then visibility is improved, but the protrusions become fibrous and resistance against abrasion decreases
Solution Approach 1:
The invention specifies optimal parameter ranges for protrusion height (0.2mm to 0.5mm) and pitch (0.15mm to 0.35mm) that prevent fibrous formation during molding. These parameter controls ensure the protrusions maintain structural integrity and abrasion resistance while still providing the desired light reflection suppression for improved visibility
3Illumination intensity
If ridges are arranged densely to suppress light reflection from multiple directions, then visibility is improved, but the complexity of the pattern increases
Solution Approach 1:
The invention segments the tire surface into multiple ridges with specific geometric configurations (main body portion and extending portions). This segmentation approach allows light reflection suppression from multiple directions through systematic arrangement of simpler ridge elements, improving visibility while managing pattern complexity through modular design
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 effectively suppresses light reflection, improves visibility, and ensures excellent moldability and durability by arranging ridges with overlapping portions and precise pitch and height configurations.
Implementation Method 1
when light is incident between the wall surfaces of the adjacent ridges, the light is repeatedly reflected between the wall surfaces and is gradually attenuated
Data Source
AI summary
A tire includes: a pattern portion, in which plural ridges having ridgelines are arranged adjacent to each other, on a tire surface, the ridgelines including a main body portion and a first extending portion and a second extending portion that extend in different directions from the main body portion in plan view, in which the first extending portion of a ridge and the second extending portion of an adjacent ridge at least partially overlap each other when viewed from a direction orthogonal to an adjacent direction of the ridges, a height of the ridge is from 0.2 mm to 0.5 mm, and ridges adjacent to each other are arranged at a constant pitch of from 0.15 mm to 0.35 mm.