Tire Sidewall Pattern Layout for Broader Decorative Expression

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Solution Overview

Problem

Existing tire decorations lack the ability to broaden the width of expression, limiting aesthetic variety.

Innovation Solution

A tire design featuring plural large pattern areas on the outside surface, composed of recesses and protrusions, with first and second pattern areas of different sizes and shapes, partitioned by smooth surfaces, to enhance luminance contrast and decorative depth.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If decoration formed by fine recesses and protrusions is provided to a side face of a tire, then aesthetic appearance is improved, but the width of expression is limited

Engineering Contradiction:
Improveluminance contrastVSAvoidwidth of expression
Core Design Contradiction:
Illumination intensityVSAdaptability or versatility

Solution Approach 1:

The decorative section is segmented into multiple large pattern areas, each containing first and second pattern areas with different luminances. This segmentation allows for greater design flexibility and broader expression width while maintaining high aesthetic appeal through controlled luminance contrast.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions within the decorative section are assigned different luminance characteristics. The first pattern areas have lower luminance while the second pattern areas have higher luminance, creating local quality variations that broaden the width of expression and enhance aesthetic diversity.

Inventive Principle:
Principle #3Local quality

2Ease of manufacture

If uniform pattern areas are used for decoration, then manufacturing is simplified, but aesthetic variety is reduced

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidaesthetic variety
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The decorative section is divided into multiple large pattern areas with distinct first and second pattern areas. This segmentation enables aesthetic variety through different luminance regions while maintaining manufacturing simplicity by using standardized recesses and protrusions that can be efficiently molded.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Local quality variations are achieved by creating first pattern areas with lower luminance and second pattern areas with higher luminance within each large pattern area. This approach enhances aesthetic variety without complicating the overall manufacturing process, as both regions use the same basic recesses and protrusions structure.

Inventive Principle:
Principle #3Local quality

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 enables a broader width of expression and enhanced aesthetic appeal by utilizing luminance differences between pattern areas, providing a more dynamic decorative section.

Implementation Method 1

the second pattern area has a higher luminance than the first pattern area

Methodology Applied
Scientific EffectLuminance difference: Reflection

Data Source

PatentEP4309919B1tire
Publication Date: 2025.11.19 BRIDGESTONE CORP
  • EP4309919B1 patent drawingFigure 1
  • EP4309919B1 patent drawingFigure 2
  • EP4309919B1 patent drawingFigure 3A~3B

AI summary

A tire including plural large pattern areas disposed along a tire circumferential direction on a tire side section, each formed by recesses and protrusions, and partitioned by spaces that are smooth surfaces. The large pattern areas are each configured including a first pattern area and a second pattern area that is disposed adjacent to the first pattern area and that has a higher luminance than the first pattern area.