Composite Tire Structure With Ring-Locked Inner Tube Integration
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Solution Overview
Problem
Composite tires face integration issues between the inner and outer tubes, leading to noise and potential separation, especially in wider tires, which affects user experience and service life.
Innovation Solution
A composite tire design featuring an outer tube with protruding rings and slots, where the inner tube is integrated using different materials or densities, engaging with the protruding rings' projections or filling slots to ensure secure positioning and prevent separation, utilizing materials like ETPU, EVA, and RP, and incorporating anti-slip patterns for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the composite tire uses wider design, then the tire provides better performance, but the inner tube and outer tube are easily separated forming gaps that result in noise
Solution Approach 1:
The inner tube is divided into different layers along the radial direction, with each layer made of different materials or same material in different densities. This segmentation allows each layer to engage with protruding rings at different positions, preventing separation and gap formation in wider tires while maintaining performance.
Solution Approach 2:
The inner tube is nested within the outer tube, with the inner tube's multiple layers engaging with protruding rings formed on the inner circumferential surface of the outer tube. This nested structure with engagement features ensures the inner tube remains securely positioned within the outer tube, preventing separation even in wider tire designs.
2Adaptability or versatility
If the inner tube and outer tube are made of different materials, then the tire combines advantages of both materials, but the integration between tubes becomes insufficient
Solution Approach 1:
Protruding rings are pre-formed on the inner circumferential surface of the outer tube before the inner tube is installed. These protruding rings with projections or slots create predetermined engagement points that secure the inner tube in place, ensuring strong integration between the differently-materialled tubes from the outset.
Solution Approach 2:
The inner tube is constructed with multiple layers of different materials or same material in different densities, creating a composite structure. This composite inner tube combines the advantages of different materials (such as rubber for wear resistance and PU for comfort) while the layered structure engages with protruding rings to maintain strong integration with the outer tube.
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 secure integration of the inner and outer tubes reduces noise, enhances durability, and extends the tire's service life, while allowing for customizable comfort and performance through varying layer densities, improving user experience and market competitiveness.
Implementation Method 1
The inner tube is centrifugally molded to the inner circumferential surface of the outer tube by using a foaming machine
Data Source
AI summary
A composite tire, having an outer tube and an inner tube made of different materials or the same material but in different densities; an inner circumferential surface of the outer tube is integrally formed with protruding rings; projections or slots are provided on each of the protruding rings; the inner tube is integrated to the inner circumferential surface of the outer tube; the inner tube is divided into different layers made of different materials or the same material but in different densities; the inner tube engages with the protruding rings such that if the projections are provided on each of the protruding rings, the projections are wrapped by the inner tube, or if the slots are provided on each of the protruding rings, the slots are filled by the inner tube. The composite tire is resistant to wearing and also comfortable to use.