Tyre Anchoring Element Interlayer for Microcrack Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing anchoring technologies for objects on the inner surface of tyres, such as monitoring devices, face issues with mechanical stress-induced detachments and microcracks due to the perforation of tyre components during vulcanization, limiting the size and durability of the anchoring elements, especially under extreme conditions like high speeds and temperatures.
Innovation Solution
A tyre design incorporating an anchoring element as a single unit interposed between two vulcanizable polymer sheets, which are integrated during the vulcanization process, ensuring a stable and durable connection without mechanical interaction, allowing for a larger and more robust anchoring surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a first fastening element is fixed to an inner surface of the tyre by mechanically connecting at least two parts with a tyre component sandwiched between them during vulcanization, then the anchoring device can be attached to the tyre, but microcracks may form in the tyre component due to perforation and mechanical stress
Solution Approach 1:
The patent introduces a specific rubber compound composition as an intermediary material between the fastening element and the tyre structure. This intermediary layer absorbs mechanical stresses and prevents direct stress concentration that would cause microcracks, while still maintaining effective anchoring of the monitoring device to the tyre.
Solution Approach 2:
The patent modifies the chemical and physical parameters of the rubber compound by incorporating specific additives and adjusting the formulation. These parameter changes enhance the material's ability to withstand vulcanization stresses and prevent microcrack formation while maintaining anchoring effectiveness.
2Strength
If the anchoring element size is limited to avoid damages during rotation cycles, then the tyre structure remains intact, but the size and weight of the object that can be fixed is restricted
Solution Approach 1:
The patent employs a composite material system consisting of the rubber compound with specific additives and the fastening element. This composite structure allows for larger anchoring elements without compromising tyre integrity, as the composite material distributes and absorbs stresses more effectively than homogeneous materials.
Solution Approach 2:
By changing the physical and chemical parameters of the rubber compound through additive incorporation, the patent enables the use of larger anchoring elements. The modified material properties allow the tyre structure to accommodate bigger objects while maintaining structural integrity during rotation cycles.
3Reliability
If a rigid casing is used to protect the electronic unit, then the electronic unit operates correctly, but the anchoring device must maintain a reliable connection between a deformable tyre and a substantially undeformable object under mechanical stress
Solution Approach 1:
The patent modifies the physical parameters of the rubber compound to create a material that can accommodate the rigid casing while maintaining reliable connection. The modified compound has enhanced elasticity and stress distribution properties that bridge the deformation compatibility gap between the deformable tyre and the rigid electronic unit casing.
Solution Approach 2:
The specially formulated rubber compound acts as an intermediary layer between the rigid casing and the tyre structure. This intermediary material absorbs and distributes mechanical stresses, allowing the rigid casing to remain protected while maintaining a reliable connection to the deformable tyre under various mechanical stresses during operation.
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 the anchoring element's durability and stability, preventing undesired detachments and microcracks, enabling the attachment of larger objects while withstanding high mechanical stresses, particularly at high speeds and temperatures.
Implementation Method 1
which are integrated during the vulcanization process
Data Source
Figure 1~2
Figure 3~4
Figure 4A~4B
AI summary
A tyre (1) for vehicle wheels is described comprising an inner surface (1a) and at least one anchoring element (4) configured to fasten an object (5) to the inner surface (1a), wherein the anchoring element (4) is at least partially incorporated in a first portion of the tyre (1) defining the inner surface (1a) and is accessible from the inner surface (1a). The anchoring element (4) comprises: i) a central body (9), provided with a base (9a), ii) a seat (10), defined in the central body (9), configured to at least partially house the object (5), the seat (10) being provided with a first mechanical coupling element (12) configured to cooperate with a second mechanical coupling element (13) associated to the object (5) so as to fasten the object (5) to the anchoring element (4); iii) at least one coupling portion (11; 27) of the central body (9) to the tyre (1). The coupling portion (11; 27) transversely projects from the base (9a) of the central body (9) and is interposed between and in contact with the first portion of the tyre (1) defining the inner surface (la) of the tyre (1) and with a second portion of the tyre (1) radially outer with respect to the first portion.