Smart Tire Inner Liner Structure for Electronic Module Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pneumatic tires with integrated electronic components face durability issues due to direct contact between electronic components and tire materials, leading to separation and reduced lifespan.
Innovation Solution
A pneumatic tire design featuring a carcass with butyl rubber and adhesive rubber layers, an electronic module with a cover rubber layer that includes an inner and outer layer to prevent direct contact between the electronic component and tire materials, and strategic placement of the electronic component to minimize interference and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic component is directly integrated into the tire structure without protective layers, then the device complexity is reduced, but the durability and reliability deteriorate due to separation between electronic components and tire materials
Solution Approach 1:
The patent introduces an adhesive rubber layer as an intermediary between the electronic component and the tire's inner liner layer. This adhesive layer prevents direct contact between incompatible materials (electronic component and butyl rubber), eliminating separation issues while maintaining structural integration. The intermediary layer resolves the contradiction by enabling reliable integration without requiring complex protective encapsulation.
2Device complexity
If a single-layer protective cover is used for the electronic component, then the device complexity is reduced, but the reliability deteriorates due to insufficient protection against separation and deformation
Solution Approach 1:
The protective cover is segmented into two distinct layers: an inner layer in direct contact with the adhesive rubber layer, and an outer layer facing the tire's inner liner. This segmentation allows each layer to be optimized for its specific function - the inner layer provides adhesive bonding, while the outer layer provides mechanical protection. The segmented structure resolves the contradiction by delivering enhanced protection without requiring a single overly complex protective system.
3Ease of manufacture
If the electronic component is placed in direct contact with the butyl rubber layer, then the manufacturing process is simplified, but the reliability deteriorates due to material incompatibility and separation
Solution Approach 1:
The adhesive rubber layer serves as a mediator between the electronic component and the butyl rubber inner liner. This intermediary layer is specifically designed to be compatible with both materials, providing reliable adhesion and preventing separation. The mediator enables simple manufacturing processes while ensuring material compatibility, resolving the contradiction between ease of manufacture and reliability.
Data Source
AI summary
A pneumatic tire of the present disclosure includes a tread portion, sidewall portions, bead portions, a carcass, and an inner liner layer. The carcass includes a plurality of carcass cords and a topping rubber layer. The inner liner layer includes a butyl rubber layer and an adhesive rubber layer. An electronic module is disposed between the carcass and the adhesive rubber layer. The electronic module includes an electronic component and a cover rubber. The cover rubber includes an inner layer and an outer layer. The electronic component is covered between the inner layer and the outer layer of the cover rubber.