Tire Sidewall Decoration With Branched Ribs for Stable 3D Contrast
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Solution Overview
Problem
Existing vehicle tire sidewall decorations exhibit a three-dimensional effect that is heavily dependent on light incidence and viewing angle, limiting their visual impact.
Innovation Solution
The sidewall decoration features structured surface elements with branched ribs that extend in multiple directions, forming an uneven mountain and valley structure, and are designed to absorb light differently than the basic hatching, creating a contrast effect independent of viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tire designs are used, then basic rolling function is maintained, but rolling resistance increases and wet grip deteriorates due to rubber compound hardening and wear
Solution Approach 1:
The tire tread is divided into multiple circumferential grooves that segment the tread pattern into distinct blocks. This segmentation allows different regions to serve different functions - some areas maintain contact for grip while grooves channel water away, reducing rolling resistance by preventing water buildup without sacrificing wet grip performance
Solution Approach 2:
The tire employs varying rubber compound formulations in different tread zones, with softer compounds in areas requiring wet grip and harder compounds in areas affecting rolling resistance. The grooves themselves are designed with specific depth and width variations to optimize local water evacuation while maintaining overall tire performance balance
2Loss of energy
If tire tread wears down, then rolling resistance increases due to compound hardening, but maintaining tread depth reduces wet grip capability
Solution Approach 1:
The tire is designed with pre-formed circumferential grooves and specific tread block configurations that maintain effective wet grip from new condition. The groove geometry and tread pattern are engineered to ensure water evacuation capability is present from the start, preventing the progressive deterioration that occurs in conventional tires as tread wears
Solution Approach 2:
The tire design incorporates specific groove depth, width, and spacing parameters that are optimized to maintain consistent performance throughout the tire's service life. The circumferential grooves are designed with dimensions that ensure effective water channeling even as the tread compound naturally hardens with use and mileage
3Reliability
If rubber compound is softened to improve wet grip, then rolling resistance increases due to higher hysteresis losses
Solution Approach 1:
By segmenting the tread into blocks separated by circumferential grooves, the design allows softer rubber compounds to be used in specific contact areas for improved wet grip, while the grooves prevent water buildup that would otherwise increase rolling resistance. The segmentation isolates the hysteresis losses to specific zones rather than the entire tread
Solution Approach 2:
Different rubber compound formulations are applied to different tread zones, with softer compounds positioned where wet grip is critical and harder compounds where rolling resistance is more sensitive. The circumferential grooves are strategically placed to separate these zones, allowing each region to optimize its local performance characteristics
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 decoration achieves a direction-independent, high-contrast three-dimensional effect with enhanced visibility, avoiding air pockets during vulcanization and ensuring a flawless structure.
Implementation Method 1
silica master batch which is a master batch obtained by mixing silica and a silane coupling agent
Implementation Method 2
mixing silica and a silane coupling agent in a specific proportion
Implementation Method 3
designed to improve the wet grip performance and reduce rolling resistance
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The invention relates to a vehicle tire, comprising a sidewall (1) having at least one sidewall decoration (2) which extends at least over a circumference segment of the sidewall (1) and which is composed of structured planar elements (4), smooth planar elements (3) and base hatching (5) composed of non-branching and non-intersecting hatching ribs (10), which base hatching adjoins these planar elements (3, 4), wherein the structured planar elements (4) represent a copy or a shadow at least of portions of smooth planar elements (3), and the structured planar elements (4) absorb light more strongly than the base hatching (5). The structured planar elements (4) are each provided with a full-surface contrast structure having branched rib lines (11, 15a), each branched rib line (11, 15a) having intersection points (K1, K2) from which the rib line (11, 15a) extends in at least three directions.