Tire Sidewall Hatching Contrast via Elevation Geometry
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Solution Overview
Problem
Existing vehicle tire sidewall hatching designs lack sufficient contrast and light reflection/absorption differences between different types of hatching area parts, limiting the recognizability of decorative surface elements and inscriptions.
Innovation Solution
The design incorporates two types of hatching area parts with elevations of varying density, height, and angle, where the second type of hatching area part has elevations that are at least 0.1 mm taller, with side flanks at a smaller angle to the sidewall, resulting in increased light absorption and contrast, allowing for higher recognizability of decorative elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If elevations in hatching area parts have uniform height and angle, then manufacturing is simpler, but contrast and light reflection/absorption differences between hatching types are insufficient
Solution Approach 1:
The patent applies local quality by giving elevations in different hatching area parts distinct local characteristics: elevations in the first hatching area part have a first height and first angle, while elevations in the second hatching area part have a second height (at least 0.1 mm greater) and second angle (at least 10° smaller). This local differentiation creates significant contrast in light reflection and absorption properties, enhancing visual recognizability of decorative elements without requiring complex manufacturing equipment.
2Illumination intensity
If elevations are made taller with steeper side flanks, then light absorption increases and contrast improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements parameter changes by specifying quantitative ranges for elevation dimensions: the height difference between the two hatching area part types is at least 0.1 mm, and the angle difference is at least 10°. These parameter specifications ensure sufficient light absorption contrast while providing clear manufacturing targets that balance performance requirements with manufacturability.
3Loss of information
If hatching area parts have high contrast for better recognizability, then decorative element visibility improves, but the complexity of creating different elevation types increases
Solution Approach 1:
The patent applies segmentation by dividing the hatching area into two distinct types of hatching area parts with different elevation characteristics. The first type has elevations with greater height and larger angles, while the second type has elevations with lesser height and smaller angles. This segmentation creates high contrast for improved recognizability of decorative elements and inscriptions, while each segment remains structurally simple enough for practical manufacturing.
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 enhanced contrast and light absorption between hatching area parts significantly improve the recognizability of decorative elements on tire sidewalls, enabling more effective design and information display.
Implementation Method 1
The hatch patches with the greater density of bumps, the smaller angle of their side flanks to the normal to the sidewall, and the greater height absorb significantly more light compared to the bumps in the other type of hatch patch and can appear jet black.
Data Source
Figure 1~2
AI summary
The invention relates to vehicle tires with a lateral wall (1) with a decorative lateral wall hatching made of at least one hatching surface (2) which has two differently designed types of hatching surface sections (5a, 5b), a first type of hatching surface section (5a) and a second type of hatching surface section (5b). A plurality of adjacent elevations (3a, 3b) which run parallel to one another in particular and are substantially triangular in the cross-section are provided in each hatching surface section (5a, 5b). The elevations (3a) run in the first type of hatching surface section (5a) with a concentration which is less than the concentration of the elevations (3b) in the second hatching surface section (5b), and the elevations (3a) in the first type of hatching surface section (5a) run at an angle (β) of at least 45° relative to the elevations (3b) in the second type of hatching surface section (5b). In the second type of hatching surface section (5b), the elevations (3b) have a height (h2) which is taller than the elevations (3a) in the first type of hatching surface section (5a) by at least 0.1 mm and have lateral flanks (7) which run at a smaller angle (a2) relative to a perpendicular to the lateral wall (1) than the lateral flanks (6) of the elevations (3a) in the first type of hatching surface section (5a).