Durable Pneumatic Tire Design with Embedded Electronics
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Summary
Problems
Pneumatic tires with embedded electronic components, such as RFID, face destruction from impact loads during travel and durability issues due to the embedded hard components, and there is a risk of the components falling off when attached to the tire surface.
Innovation solutions
A pneumatic tire design featuring a bead reinforcing layer and a clinch member with lower rigidity than the bead reinforcing layer, where the electronic component is embedded between these two layers, ensuring the clinch member has a lower complex elastic modulus and heat generation property to absorb impact without damaging the component.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the electronic component is embedded in the inside of the unvulcanized tire and then integrated with the tire by vulcanization adhesion, then the electronic component is prevented from falling off, but the electronic component is easily destroyed by an impact load during traveling on the road surface and the durability of the tire is lowered
Why choose this principle:
The bead reinforcing layer is designed with locally optimized properties: it has high rigidity (E*≥70 MPa) to provide structural support and prevent electronic component destruction, while the clinch member has lower rigidity (E* < 70 MPa) to reduce stress concentration. This local differentiation of material properties resolves the contradiction between attachment reliability and impact resistance.
Principle concept:
If the electronic component is embedded in the inside of the unvulcanized tire and then integrated with the tire by vulcanization adhesion, then the electronic component is prevented from falling off, but the electronic component is easily destroyed by an impact load during traveling on the road surface and the durability of the tire is lowered
Why choose this principle:
The invention uses composite material structures: the bead reinforcing layer combines rubber composition with high rigidity requirements (E*≥70 MPa, tan δ≤0.15) to create a protective environment for the electronic component, while the clinch member uses a different rubber composition with lower rigidity. This composite approach allows simultaneous achievement of secure attachment and impact protection.
Application Domain
Data Source
AI summary:
A pneumatic tire design featuring a bead reinforcing layer and a clinch member with lower rigidity than the bead reinforcing layer, where the electronic component is embedded between these two layers, ensuring the clinch member has a lower complex elastic modulus and heat generation property to absorb impact without damaging the component.
Abstract
Provided is a tire manufacturing feature in which even when an electronic component is embedded in a tire, damage due to impact load during traveling on the road surface is inhibited and the durability of the tire is prevented from deteriorating. A pneumatic tire provided with: a bead reinforcing layer provided in the tire-axial-direction outer side of the carcass of a bead part the bead reinforcing layer reinforcing the bead part from the outer side of the carcass; a clinch member provided on the tire-axial-direction outer side of the bead reinforcing layer; and an electronic device. The clinch member has a rigidity lower than that of the bead reinforcing layer, and the electronic component is embedded between the bead reinforcing layer and the clinch member.