Wheel Adapter With Rubber Protrusion for Anti-Stuck Tire Bead
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Solution Overview
Problem
Existing tire adapters fail to prevent the tire bead from detaching from the rim at low pressure and under lateral force while maintaining easy assembly, and previous solutions either complicate disassembly or require standardization changes.
Innovation Solution
An adapter with an axially inner end for mounting on the rim, an axially outer end with a reinforcing element, and a body connecting both ends, featuring a cylindrical seat with a rubbery annular protrusion that supports the tire bead, allowing axial immobilization and radial deformation to reduce stress during impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tire is glued to the mounting rim to increase resistance to loosening, then the anti-stuck performance is improved, but the ease of disassembly deteriorates
Solution Approach 1:
The adapter acts as an intermediary component between the tire bead and the rim hook. It features an axially outer end with an outer reinforcing element that interfaces with the tire bead, and an axially inner end with an inner reinforcing element that interfaces with the rim hook. The body connecting these ends transfers forces while allowing controlled movement, preventing direct gluing of tire to rim while maintaining anti-stuck performance through mechanical interlocking via the reinforcing elements.
2Reliability
If the geometry of the rim is modified to make loosening more difficult, then the anti-stuck performance is improved, but the adaptability deteriorates due to destandardization
Solution Approach 1:
The solution segments the rim-tire interface into three distinct components: the standard rim with its original geometry, the adapter with reinforcing elements at its ends, and the tire bead. This segmentation allows the rim to remain standardized while the adapter provides the enhanced anti-stuck functionality through its inner and outer reinforcing elements, which can be optimized independently of rim geometry.
3Strength
If existing adapters with complex reinforcing sheets are used, then the structural strength is improved, but the device complexity increases and radial deformation capability is insufficient
Solution Approach 1:
The adapter employs composite construction with a body made of elastomeric composition providing flexibility and radial deformation capability. The axially outer end incorporates an outer reinforcing element and the axially inner end incorporates an inner reinforcing element, creating a composite structure that combines the strength of reinforcement with the elasticity of the elastomeric body, achieving both high strength and simplicity without complex multi-layer reinforcing sheets.
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 adapter provides enhanced anti-stuck performance at lower clamping pressures, maintaining easy assembly and reducing stress on the assembly, with the tire bead being immobilized axially like a conventional rim setup but capable of radial movement, thus improving safety and ease of use.
Implementation Method 1
the body comprises, facing the adapter seat, an annular seat protrusion, said protrusion comprising at least one rubbery composition... capable of radial movement, thus improving safety and ease of use
Data Source
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AI summary
The invention relates to an adapter for a wheel assembly having a rotational axis and comprising a tire (P) with two beads (B), a wheel rim (J), where said adapter forms the junction between one of the beads and the wheel rim, where said wheel rim has two wheel-rim seats (20) and two wheel-rim hooks (12), where said adapter has an axially inner end (2) intended to be mounted on the wheel-rim seat and comprising an inner reinforcement element (5), an axially outer end (1) intended to be mounted on the wheel-rim seat and comprising an outer reinforcement element (4), a body (3) connecting said outer end (1) to said inner end (2) such as to form a single part comprising at least one main reinforcement frame that ensures the connection between said outer reinforcement element (4) and said inner reinforcement element (5), a substantially cylindrical adapter seat (7) intended to receive one of said beads, an adapter bearing surface (8) substantially in a plane perpendicular to the axis. This adapter is characterized in that the reinforcement element (4) of the axially outer end is entirely located axially outside the bearing surface (8), and in that the body (3) comprises a ring-shaped seat protuberance (9) opposite the adapter seat (7), where said protuberance (9) comprises at least one rubber composition.