Pneumatic Tire Sound Absorber Segmented Bonding

Solution Overview

Problem

Existing pneumatic vehicle tires face challenges in reducing rolling noise while maintaining optimal weight and manufacturing efficiency, as full-area adhesive bonding for sound absorption increases weight and manufacturing complexity, and is costly.

Innovation Solution

The tire features alternating adhesion promoter sections and adhesion promoter-free sections with a separating agent on the inner surface, allowing for partial bonding and reducing adhesive usage, weight, and manufacturing complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If full-area adhesive bonding is used to bond the absorber to the inner surface of the pneumatic vehicle tire, then sound absorption is effective, but the weight of the tire increases and manufacturing complexity increases

Engineering Contradiction:

Improverolling noiseVSAvoidweight of the tire

Core Design Contradiction:

Object-affected harmful factorsVSWeight of moving object

Solution Approach 1:

The bonding area is segmented into adhesion promoter sections and adhesion promoter-free sections arranged in an alternating pattern around the circumference of the inner tire surface. This segmentation allows the absorber to be bonded only in specific regions rather than over the full area, reducing adhesive consumption and tire weight while maintaining sufficient sound absorption functionality.

Inventive Principle:

Principle #1Segmentation

2Object-affected harmful factors

If full-area adhesive bonding is used to bond the absorber to the inner surface of the pneumatic vehicle tire, then sound absorption is effective, but manufacturing costs increase

Engineering Contradiction:

Improverolling noiseVSAvoidmanufacturing cost

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The bonding area is segmented into adhesion promoter sections and adhesion promoter-free sections arranged in an alternating pattern around the circumference of the inner tire surface. This segmentation allows the absorber to be bonded only in specific regions rather than over the full area, reducing adhesive consumption and tire weight while maintaining sufficient sound absorption functionality.

Inventive Principle:

Principle #1Segmentation

3Reliability

If full-area adhesive bonding is used to bond the absorber to the inner surface of the pneumatic vehicle tire, then bonding strength is sufficient, but the manufacturing process becomes more complex

Engineering Contradiction:

Improvebonding strengthVSAvoidmanufacturing process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bonding area is segmented into adhesion promoter sections and adhesion promoter-free sections arranged in an alternating pattern around the circumference of the inner tire surface. This segmentation allows the absorber to be bonded only in specific regions rather than over the full area, reducing adhesive consumption and tire weight while maintaining sufficient sound absorption functionality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the inner tire surface are given different properties: adhesion promoter sections provide bonding capability while adhesion promoter-free sections provide separation. This local differentiation allows the absorber to be securely bonded where needed while avoiding bonding in other regions, simplifying the manufacturing process by eliminating the need for full-area bonding operations.

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

This solution reduces the weight and manufacturing costs of the tire, simplifies the manufacturing process, and allows for precise predetermination of tire properties while maintaining effective sound absorption.

Implementation Method 1

the cohesive bond consists of an adhesion promoter applied between the absorber and the inner surface of the pneumatic vehicle tire

Methodology Applied

Scientific EffectAdhesive bonding: Adhesive

Implementation Method 2

the adhesion promoter-free sections have been coated with a separating agent

Methodology Applied

Scientific EffectSeparating agent effect:

Data Source

PatentUS11072210B2Pneumatic vehicle tyres

Publication Date: 2021.07.27 CONTINENTAL REIFEN DEUTSCHLAND GMBH

AI summary

A pneumatic vehicle tire (1) having a profiled tread (2) that merges at either side into sidewalls (3), the end of which is formed by a tire bead (5, 6) insertable in an airtight manner into a wheel rim (7) of a vehicle wheel (8), wherein an absorber (10) has been integrated into the pneumatic vehicle tire (1) for sound absorption and the cohesive bond consists of an adhesion promoter (11) applied between the absorber (10) and the inner surface (9) of the pneumatic vehicle tire (1), has been further developed in accordance with the invention in that the inner surface (9) of the pneumatic vehicle tire (1) has mutually alternating adhesion promoter sections (12) and adhesion promoter-free sections (13), the adhesion promoter-free sections (13) having been coated with a separating agent (14).