Tire Sidewall Identifier Grooves for High-Contrast Marking
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Solution Overview
Problem
Existing vehicle tire sidewall identifiers face limitations in achieving diverse contrasts and fine gradients without compromising sidewall stability, aerodynamic performance, and cleanability, due to constraints on groove depth and density.
Innovation Solution
Incorporating identifier grooves with inner corrugations transverse to the longitudinal direction, allowing for varied groove designs and inner corrugation patterns to enhance contrast diversity and gradients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If very pronounced, deep groove structures are used to achieve high contrast identifiers, then contrast diversity is improved, but aerodynamic characteristics deteriorate due to rough surface structure causing air turbulences
Solution Approach 1:
The invention changes the geometric parameters of the groove structures, specifically limiting groove depth to a range that prevents excessive surface roughness while maintaining sufficient contrast. The groove depth is controlled to balance optical contrast requirements with aerodynamic performance, avoiding the creation of deep cavities that would generate harmful air turbulences.
Solution Approach 2:
The invention applies different groove characteristics to different regions of the identifier. By varying groove depth, width, and spacing locally across the identifier surface, sufficient contrast is achieved in specific areas without creating universally deep grooves that would harm aerodynamics. This localized differentiation allows contrast optimization without compromising overall aerodynamic performance.
2Illumination intensity
If very deep grooves are used to enhance contrast, then contrast diversity is improved, but cleanability deteriorates due to dirt accumulation in deep grooves
Solution Approach 1:
The invention optimizes groove depth parameters to create a balance between contrast generation and dirt accumulation prevention. By controlling groove depth within specific ranges and designing groove profiles with appropriate opening widths, the structures maintain sufficient visual contrast while preventing dirt from becoming trapped in excessively deep cavities, thereby improving cleanability.
3Illumination intensity
If very thin material webs are used between grooves to increase groove density, then contrast diversity is improved, but sidewall stability deteriorates due to lack of load bearing capability
Solution Approach 1:
The invention establishes optimal parameter ranges for material web thickness and groove spacing that ensure sufficient structural strength while maintaining contrast diversity. By carefully controlling the dimensions of material webs between grooves and the spacing between adjacent grooves, the design achieves high identifier contrast without compromising the load-bearing capability and stability of the sidewall structure.
4Illumination intensity
If high groove density is used to achieve fine contrast gradients, then contrast diversity is improved, but manufacturing precision requirements increase due to limitations of material-removing processes
Solution Approach 1:
The invention selects groove parameters including depth, width, and spacing that are within the achievable precision range of existing material-removing manufacturing processes. By designing groove dimensions and densities that align with current manufacturing capabilities, the invention enables production of high-contrast identifiers with fine gradients without imposing unrealistic precision requirements that would make manufacturing prohibitively difficult or expensive.
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 enables high contrast diversity and fine gradient adjustments without affecting sidewall stability, improving aerodynamic performance and cleanability, while reducing the risk of damage and dirt accumulation.
Implementation Method 1
there is a need to specifically adjust the light scattering behavior of the surface of the tire sidewall by the design of the tire sidewall
Data Source
AI summary
The invention relates to a vehicle tire comprising a tread provided for contacting the road surface, and two sidewalls which adjoin the tread. At least one sidewall has an identifier region. The identifier region comprises a multiplicity of identifier grooves which extend in the sidewall of the vehicle tire (10). The identifier grooves have in each case one inner corrugation having a multiplicity of elongate elevations and/or depressions which in the interior of the identifier grooves run transversely to the longitudinal direction of the identifier grooves. The elongate elevations and depressions, conjointly with the longitudinal direction of the identifier grooves, include in each case an angle in the range of 20° to 90°.