Multi-Chamber Tire Venting for Faster Pressure Equalization

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Solution Overview

Problem

Conventional multi air chamber tires require time and effort to adjust internal pressures across multiple air chambers, making them inconvenient for use.

Innovation Solution

A multi air chamber tire design featuring partition walls and ventilation members that allow or shut off ventilation between chambers based on predetermined conditions, such as air injection or leakage, to manage internal pressure effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If each air chamber is independently filled with gas, then air leakage is prevented during tire failure, but adjustment of internal pressures requires time and effort

Engineering Contradiction:

Improveair leakage preventionVSAvoidpressure adjustment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The tire is divided into multiple independently sealed air chambers by partition walls, allowing each chamber to maintain its pressure independently. This segmentation enables continuous travel even when one chamber loses pressure, directly addressing the reliability improvement while the ventilation member provides the time-saving mechanism for pressure adjustment

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A ventilation member is introduced as an intermediary component that can selectively connect or isolate air chambers. This mediator allows rapid pressure equalization between chambers when needed, eliminating the time-consuming manual adjustment process while maintaining the independent sealing structure that prevents air leakage during failure

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If ventilation members connect air chambers, then pressure adjustment is simplified, but air leakage may occur between chambers

Engineering Contradiction:

Improvepressure adjustment convenienceVSAvoidair leakage prevention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The ventilation member is designed with dynamic opening and closing capabilities, allowing it to adapt its state based on operational needs. When connected, it enables easy pressure adjustment between chambers; when closed, it prevents air leakage, thus resolving the contradiction between operational ease and reliability

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The ventilation member changes its flow parameter (from open to closed state) based on operational conditions. This parameter change allows the system to switch between modes: facilitating pressure equalization during maintenance and preventing air leakage during normal operation or failure scenarios

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12109855B2Multi air chamber tire and method for controlling internal pressure of same

Publication Date: 2024.10.08 BRIDGESTONE CORP

AI summary

A multi air chamber tire 1 includes a partition wall 30 configured to define and form a plurality of air chambers 20 disposed adjacent to each other in an inner cavity of a tire, and a ventilation member 10 provided to the partition wall 30, and configured to connect the plurality of air chambers 20 in a state where ventilation is allowed. The ventilation member 10 allows ventilation between the plurality of air chambers 20 when a predetermined condition is satisfied indicating that fluid is being injected into at least one of the plurality of air chambers 20 from outside of the tire, and the ventilation member 10 shuts off the ventilation between the plurality of air chambers 20 when the predetermined condition is not satisfied.