Tire Electronic Device Anchoring with Composite Elastomer
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Solution Overview
Problem
Existing tire-mounted electronic devices face mechanical stress issues due to centrifugal forces, axial, and longitudinal forces during rotation, braking, and cornering, leading to potential ruptures and cracks in the anchoring body, which compromises their durability and longevity.
Innovation Solution
A tire assembly featuring an electronic device anchored by a crosslinked elastomeric composition comprising synthetic diene rubber and halogenated butyl rubber, which provides enhanced resistance to mechanical stresses, abrasion, and maintains functionality throughout the tire's lifespan without ruptures or cracks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an electronic device is mounted in a tyre using a conventional anchoring body, then the device can be secured to the tyre, but the anchoring body is subjected to tremendous centrifugal forces and mechanical stresses during tyre rotation that cause compression, deformation, and potential ruptures or cracks
Solution Approach 1:
The anchoring body is made from a composite elastomeric composition comprising synthetic diene rubber (providing tensile strength and elasticity) and halogenated butyl rubber (providing abrasion resistance and chemical stability). This combination creates a material that can withstand the tremendous centrifugal forces, compression, and deformation during high-speed rotation without ruptures or cracks, resolving the contradiction between strength and reliability under mechanical stress.
2Ease of manufacture
If the anchoring body is made from a single elastomeric material, then the manufacturing process is simple, but the material cannot simultaneously provide sufficient resistance to abrasion, compression, and mechanical stresses
Solution Approach 1:
The patent employs a composite elastomeric composition combining synthetic diene rubber and halogenated butyl rubber in specific proportions. This composite material provides simultaneous resistance to abrasion, compression, and mechanical stresses while maintaining manufacturability through established vulcanization processes, thus resolving the contradiction between ease of manufacture and strength.
3Ease of operation
If the anchoring body uses conventional elastomeric material, then the electronic device can be mounted, but the assembly cannot withstand fast accelerations, decelerations, and high-speed rotation without ruptures or cracks
Solution Approach 1:
The composite elastomeric composition of synthetic diene rubber and halogenated butyl rubber provides the necessary mechanical properties to withstand fast accelerations, decelerations, and high-speed rotation. The synthetic diene rubber contributes elasticity and tensile strength, while the halogenated butyl rubber provides abrasion resistance and chemical stability, ensuring the assembly can be mounted easily and reliably withstand extreme mechanical stresses throughout the tyre's lifespan.
4Stability of the object's composition
If the anchoring body is designed to absorb centrifugal force compression, then it can maintain integrity during rotation, but it must also resist instantaneous relaxation when the tyre contacts the road, requiring enhanced material properties
Solution Approach 1:
The composite elastomeric composition is specifically designed to handle both compression during rotation and instantaneous relaxation during road contact. The synthetic diene rubber provides the elasticity needed to absorb compression and return to original shape, while the halogenated butyl rubber enhances abrasion resistance and structural stability, enabling the anchoring body to maintain integrity under compression and resist relaxation forces without ruptures or cracks.
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 assembly effectively resists mechanical stresses, maintaining integrity at high speeds up to 270 km/h and withstanding fast accelerations and decelerations without ruptures, ensuring the electronic device's longevity and the tire's lifespan of approximately 50,000 kilometers without the need for premature maintenance.
Implementation Method 1
an anchoring body (40) made of a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition
Implementation Method 2
the tremendous centrifugal force which acts on the sensor during the tyre rotation
Implementation Method 3
the antenna placed in the tyre can be coupled by induction, and by virtue of which the necessary energy for operation of the sensor and the possible control unit is supplied by the antenna itself
Data Source
AI summary
A tire having an internal surface includes an electronic device and an anchoring body mounted on the internal surface for engagement between the electronic device and the internal surface of the tire, wherein the anchoring body includes a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition including a synthetic diene rubber, preferably in an amount of from 20 to 80 phr, and a halogenated butyl rubber, preferably in an amount of from 80 to 20 phr.