Annular Bead Lock Mechanism for Balanced Tire Sealing
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Solution Overview
Problem
Current bead locking systems for vehicle wheels are costly, unbalanced, and create design limitations, particularly in tubeless tire sealing on spoked-wheel rims, with external bead locks requiring complex and expensive wheel modifications and internal designs prone to leaks and imbalance.
Innovation Solution
A mechanically simple annular ring-based bead locking mechanism that securely locks the tire bead around the entire circumference of the wheel, maintaining balance and creating an airtight seal without high-pressure air bladders, suitable for various wheel types and convertible tube-type tires to tubeless configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external bead locks are used to secure the tire bead, then the tire locking function is improved, but the wheel complexity and cost increase significantly
Solution Approach 1:
The invention extracts the bead locking function from the wheel structure itself and implements it through a separate, removable bead lock device that clamps independently of the wheel design. This allows the locking function to be added without modifying the wheel, thereby reducing overall system complexity while maintaining reliability
Solution Approach 2:
The bead lock device is designed as a universal component that can be applied to various wheel and tire configurations without requiring wheel-specific modifications. The device performs multiple functions including securing the bead, creating sealing surfaces, and enabling tubeless conversion across different wheel types
2Device complexity
If internal bead locks with single-point clamping are used, then the device complexity is reduced, but the tire security and sealing effectiveness deteriorate
Solution Approach 1:
The bead lock device is segmented into multiple clamping points around the tire circumference, with each segment contributing to the overall locking force. This segmentation provides distributed security along the entire bead interface while maintaining relatively simple device construction through modular design
Solution Approach 2:
The invention merges the bead locking function with the sealing function into a single integrated device structure. The same clamping mechanism that secures the bead also creates the sealing surface against the rim, eliminating the need for separate components and improving reliability without significantly increasing complexity
3Device complexity
If internal bead locks are used to secure the tire, then the device complexity is reduced, but the wheel balance deteriorates causing vibration
Solution Approach 1:
The bead lock device is divided into multiple segments distributed evenly around the tire circumference. Each segment applies localized clamping force, and the distributed arrangement ensures balanced loading on the wheel assembly, preventing vibration while maintaining simple device construction through modular segmentation
Solution Approach 2:
The device is designed to apply uniform clamping force at all clamping points around the tire, creating equipotential pressure distribution. This balanced force application prevents any single location from bearing excessive load, maintaining wheel balance and eliminating vibration while keeping the device structure relatively simple
Data Source
AI summary
An annular and ring extends around the interior of a wheel/rim on which a tire is mounted. The inner diameter of the annular ring is sized for a snug fit on the wheel rim. A tensioning cable extends through the tubular ring and opposed arms are attached to the ring and are movable between disengaged and engaged positions. The apparatus is selectively movable by actuation of a cable tensioner between a first, disengaged position where the arms do not engage the tire and thereby lock it to the rim, and a second, engaged position in which the arm bear against the tire beads, capturing the tire beads between the rim flanges and the wing members to lock the tire to the rim and to create and/or enhances the air-tight seal between the tire and the rim. The bead lock apparatus may be beneficially used in combination with a foam insert for enhanced tire performance.