Self-Sealing Tire Cavity Foam Layout to Prevent Sealant Sticking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing self-sealing tires face challenges in achieving effective noise reduction without compromising the sealing performance, as noise reduction layers can become stuck to the sealant layer, impeding their performance.
Innovation Solution
The use of a silicone foam noise reduction layer, which is sandwiched between the tread portion and the sealant layer, allows for improved noise absorption while maintaining the self-sealing functionality by minimizing adhesion issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a noise reduction layer is installed on the inside of the tire, then noise absorption is improved, but the layer becomes stuck to the sealant layer and deforms, impeding its performance
Solution Approach 1:
The patent introduces an adhesive layer as an intermediary between the noise reduction layer and the sealant layer. This adhesive layer prevents direct adhesion between the noise reduction layer and sealant, eliminating the deformation and performance degradation that occur when the noise reduction layer becomes stuck to the sealant layer during tire operation.
Solution Approach 2:
The patent modifies the adhesion parameters by introducing a specialized adhesive layer with controlled adhesive properties. This adhesive layer has optimized adhesion strength to the tread portion while preventing excessive adhesion to the noise reduction layer, thereby maintaining the noise reduction layer's structural integrity and performance.
2Object-affected harmful factors
If a noise reduction layer is installed on the inside of the tire, then noise absorption is improved, but the layer prevents the sealant layer from flowing to seal punctures
Solution Approach 1:
The adhesive layer serves as a mediator that allows the sealant layer to flow freely toward punctures without being blocked by the noise reduction layer. It provides a interface that facilitates sealant flow while maintaining noise reduction functionality.
Solution Approach 2:
The patent segments the tire interior into distinct functional layers: the tread portion, adhesive layer, noise reduction layer, and sealant layer. This segmentation allows each layer to perform its specific function independently without interfering with others, particularly enabling the sealant layer to flow freely for puncture sealing.
3Object-affected harmful factors
If small parts of the noise reduction layer become separated and are drawn into the puncture, then noise absorption is maintained, but the sealant layer cannot seal the puncture
Solution Approach 1:
The adhesive layer acts as a barrier that prevents small separated parts of the noise reduction layer from being drawn into punctures. It provides a stable interface that stops sealant flow in the event of noise reduction layer degradation, ensuring puncture sealing capability is maintained.
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 configuration enhances both noise reduction and self-sealing performance without increasing the complexity of the tire's internal design, ensuring effective vibration damping and puncture sealing.
Implementation Method 1
a silicone foam noise reduction layer arranged on the sealant layer in the inner cavity of the tire
Implementation Method 2
The sealant layer may comprise or consist of a viscous fluid configured to flow into a puncture or perforation in the tread portion
Data Source
AI summary
A tire as disclosed herein comprises: a tread portion; a bead portion; and a sidewall portion extending between the bead portion and the tread portion. The tread portion, bead portion and sidewall portion define an inner cavity of the tire. The tire further comprises a sealant layer arranged on the tread portion of the tire in the inner cavity of the tire; and a silicone foam noise reduction layer arranged on the sealant layer in the inner cavity of the tire.