Tyre Sidewall Hatching for Angle-Independent Contrast
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle tire hatched areas exhibit varying contrast depending on lighting conditions and angles, leading to inconsistent visibility and visibility loss at certain angles.
Innovation Solution
The implementation of zigzag-patterned hatching ribs with additional ribs branching off from inner corners, offsetting adjacent ribs, and specific dimensions and angles to enhance light scattering and absorption, ensuring consistent high contrast from all viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional parallel hatching ribs are used, then manufacturing is simple and cost-effective, but contrast visibility drops abruptly at certain viewing angles
Solution Approach 1:
The patent applies asymmetry by changing from traditional parallel hatching ribs to a zigzag pattern with alternating inner and outer corner regions. This asymmetric geometric configuration ensures that light scattering and shadow effects occur consistently across different viewing angles, eliminating the abrupt contrast drop-off seen in symmetric parallel rib designs.
Solution Approach 2:
The invention introduces a new dimensional aspect by adding transverse ribs that extend perpendicular to the longitudinal direction of the hatching ribs. This creates a two-dimensional crosshatch pattern rather than simple one-dimensional parallel lines, providing multiple light interaction surfaces that maintain contrast visibility from various angles.
2Manufacturing precision
If hatched areas are engraved into the mold surface, then high quality imprinting is achieved, but the contrast is highly dependent on incident light direction
Solution Approach 1:
The hatching ribs are segmented into multiple sections with alternating orientations (inner corner regions and outer corner regions). This segmentation creates numerous small reflective and absorptive surfaces that interact with light from different directions, ensuring consistent contrast appearance regardless of incident light angle while maintaining precise mold imprinting.
3Illumination intensity
If additional ribs are added to enhance contrast, then light scattering improves, but device complexity increases
Solution Approach 1:
The invention merges the functions of multiple rib types into a unified zigzag pattern. The transverse ribs are integrated directly into the zigzag configuration at inner corner regions, combining the light-scattering function of additional ribs with the geometric efficiency of the zigzag pattern. This integration enhances light scattering while minimizing structural complexity compared to adding separate additional rib elements.
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 achieves a high and consistent contrast effect across various lighting conditions, enhancing visibility and shadow effects, particularly on black rubber tires.
Implementation Method 1
Light incident from all possible directions is scattered, reflected multiple times, and absorbed by these ribs
Implementation Method 2
Light incident from all possible directions is scattered, reflected multiple times, and absorbed by these ribs
Implementation Method 3
Light incident from all possible directions is scattered, reflected multiple times, and absorbed by these ribs
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The invention relates to a vehicle tyre (1), in particular a pneumatic vehicle tyre, comprising sidewalls (2), a tread (3) and at least one hatched surface (4) on at least one of the sidewalls (2) and/or the tread (3), wherein the hatched surface (4) has hatching ribs (5) which have an elongate design and are arranged in parallel or largely in parallel to one another in longitudinal extension directions (ER). The vehicle tyre is characterized in that the hatching ribs (5) have successive zig-zag-shaped rib portions (5a, 5b) which alternately enclose inner corner and outer corner regions (6, 7), wherein a freely ending additional rib (8) branches off from the inner corner regions (6) in each case on the same side of the hatching ribs (5) and wherein hatching ribs (5) extending next to each other are offset relative to one another with respect to their longitudinal extension directions (ER) such that, in the case of adjacent hatching ribs (5), the outer corner regions (7) and the inner corner regions (6) are in each case lying opposite one another. The invention also relates to a vulcanization mold and to a method for producing the pneumatic vehicle tyre.