Tire Marking Surface Grid for Higher Contrast and Easy Demolding
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Solution Overview
Problem
Existing pneumatic vehicle tire designs with marking surfaces, such as parallelogram grids, have limited contrast effects and production challenges, particularly in achieving high contrast and easy producibility.
Innovation Solution
A parallelogram grid with interior angles of 35° to 90°, where at least half of the parallelograms have an additional elevation, increases the density and variation of inclined surfaces for enhanced light scattering and absorption, improving contrast and demolding capabilities during tire production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a parallelogram grid marking surface is used, then the contrast effect is enhanced, but the production complexity increases due to additional molding requirements
Solution Approach 1:
The marking surface is segmented into multiple parallelogram elements with specific interior angles (35° to 90°). Each parallelogram can be independently configured with or without additional elevations, allowing the complex optical effect to be achieved through repetition of modular geometric units rather than requiring a completely unique complex mold design.
Solution Approach 2:
Different regions of the marking surface have different local geometries - some parallelograms have additional elevations while others do not. This local variation in quality creates the desired contrast effect through selective light scattering and shadow formation, while the overall pattern remains systematic and manufacturable.
2Illumination intensity
If additional elevations are added to parallelograms, then light scattering and contrast are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The invention specifies parameter ranges rather than exact values - interior angles between 35° to 90° (preferably 40° to 50°, particularly 45°), and systematic variation of elevation heights. These parameter ranges provide manufacturing tolerance windows that maintain the desired optical effect while accommodating normal manufacturing variations.
Solution Approach 2:
The additional elevations within the parallelograms do not need to achieve perfect geometric precision to be effective. The patent accepts that some variation in elevation height and position will occur during manufacturing, and the optical contrast effect remains sufficient even with these imperfections, as long as the basic geometric configuration is maintained.
3Illumination intensity
If the interior angle is reduced to 35°-55°, then contrast effect and shadow formation are enhanced, but demolding difficulty increases
Solution Approach 1:
The vulcanization mold is designed with preliminary draft angles and surface release characteristics that anticipate the demolding challenge. By pre-configuring the mold geometry with appropriate taper and surface properties, the marking surface can be successfully demolded even with the acute 35°-55° interior angles that create superior shadow effects.
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 solution significantly enhances the contrast effect by increasing light scattering and absorption, providing clearer marking visibility and improved demolding, while maintaining production efficiency.
Implementation Method 1
The scattering of light on the flanks of the elevations reduces the reflection of the light on the surface of the tire, which changes the brightness effect
Implementation Method 2
light can be reflected, scattered and absorbed in different directions
Implementation Method 3
The additional inclined surfaces of the additional elevation increase the scattering, the multiple reflection and the absorption of light that is incident on the marking surface
Data Source
AI summary
A pneumatic vehicle tire (1) having sidewalls (2) and a tread (3) and having at least one marking surface (4) on at least one of the sidewalls (2) and/or on the tread (3), wherein the marking surface (4) has two parallel sets (5, 5′) of elongate elevations (6, 6′), wherein the two parallel sets (5, 5′) intersect and form a parallelogram grid.The problem addressed is therefore that of influencing the contrast effect in even more targeted fashion, and further increasing the contrast effect. It is also the intention to realize easy producibility of the tire.This is achieved in that the parallelograms of the parallelogram grid have an interior angle (7) of 35° to 90°, and in that at least one parallelogram, preferably at least half of the parallelograms, particularly preferably all of the parallelograms, has or have an additional elevation (8) within its or their areal extent.