Bead Lock Wheel Flange Protection
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Solution Overview
Problem
Current bead locks fail to adequately prevent damage to wheel flanges when tires are operated at lower than normal pressures, leading to potential vehicle immobilization and significant costs associated with replacing damaged wheels, especially in off-road and military applications where tires are prone to deflation due to high lateral forces, punctures, or ballistic events.
Innovation Solution
The development of a bead lock system with a raised portion that extends above the outboard wheel flange, fabricated from materials such as rubber, elastomer, metal, or composite materials, which provides enhanced protection by securing the tire beads to the wheel flanges, thereby preventing separation and deflation, and can be customized in height and width to fit various tire and wheel geometries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a tire is operated at lower than normal tire pressure to increase ground contact patch and traction, then tire traction and flotation are improved, but the tire beads may separate from the wheel flanges causing rapid deflation and wheel flange damage
Solution Approach 1:
The bead lock device is installed on the wheel before the tire is mounted, positioned between the wheel flange and the tire bead. This preliminary placement creates a mechanical barrier that prevents the tire bead from separating from the wheel flange under low pressure conditions, allowing the tire to be operated at reduced pressures for improved traction without compromising bead retention reliability
Solution Approach 2:
The bead lock acts as an intermediary component between the wheel flange and the tire bead. It provides a mechanical interface that maintains the connection between these two elements under low pressure conditions, transferring the securing function from the tire inflation pressure alone to a dedicated mechanical locking structure that prevents bead separation while allowing lower operating pressures for enhanced traction and flotation
2Reliability
If internal bead locks are installed to secure tire beads to wheel flanges, then bead separation is prevented, but the wheel flanges may still be damaged during tire deflation events
Solution Approach 1:
The bead lock device includes a protective element that extends beyond the wheel flange surface to provide a cushioning barrier. This protective structure absorbs and distributes the impact forces that occur during tire deflation events, preventing these forces from being concentrated on the wheel flange and thereby preventing damage while maintaining reliable bead locking performance
Solution Approach 2:
The protective element of the bead lock is designed as a sacrificial component that can be replaced if damaged. This allows the main structural components of the wheel and tire to be preserved, reducing the need for expensive wheel replacements while maintaining the reliability of the bead locking system throughout its service life
3Ease of operation
If wheel flanges are forced to carry vehicle weight due to tire deflation, then the vehicle remains mobile, but significant damage to wheel flanges is incurred
Solution Approach 1:
The protective element extending from the bead lock provides a cushioning barrier before the tire fully deflates and the wheel flange is forced to bear the full vehicle weight. This protective structure distributes and absorbs the impact loads, preventing damage to the wheel flange while maintaining vehicle mobility during and after deflation events
Data Source
AI summary
A system. The system includes a wheel, a tire and a bead lock assembly. The wheel defines an axis of rotation and includes an outboard wheel flange and an inboard wheel flange. The tire is mounted on the wheel, and the tire and the wheel cooperate to define a tire cavity. The bead lock assembly is within the tire cavity, and has a radially outermost surface which is a first distance from the axis of rotation. At least one of the outboard and inboard wheel flanges has a radially outermost surface which is a second distance from the axis of rotation. The first distance is greater than the second distance.