Run-flat Support Segments for Split Wheel Rim
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Solution Overview
Problem
Existing run-flat support systems for pneumatic tires face challenges in maintaining vehicle stability and control during deflation, as they often require complex mounting procedures, are prone to displacement due to centrifugal forces, and compromise wheel strength with additional bolt holes.
Innovation Solution
A run-flat support system featuring a positive locking torque assembly and support segments that are removably coupled to a split wheel rim, allowing for secure attachment without reducing the wheel's effective diameter, ensuring stability and traction even in deflated conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If run-flat support devices are made stiff enough to support a tire under run-flat conditions, then tire support capability is improved, but mounting difficulty increases due to the difference in diameter between the tire bead flanges and the interconnecting rim center portion
Solution Approach 1:
The run-flat support device is divided into multiple segments that can be independently manipulated. Each segment can be positioned and secured separately, allowing the device to be mounted on split wheel rims without requiring the entire device to be stretched over the rim in one piece. This segmentation enables easier mounting while maintaining the structural integrity needed for tire support.
2Ease of operation
If run-flat support devices are made resilient enough to be slipped over the bead flanges and engaged with the wheel rim in a static condition, then mounting ease is improved, but the devices tend to slip and lose their support position during high speed operation due to centrifugal forces
Solution Approach 1:
The device incorporates preliminary positioning features such as projections on the inner surface that engage with corresponding features on the wheel rim before the vehicle is put into motion. These preliminary engagements prevent the device from slipping during high-speed operation by establishing secure contact points in advance, while still allowing easy mounting in the static condition.
3Stability of the object's composition
If run-flat devices are equipped with clamps to achieve position maintenance, then position stability is improved, but placement and replacement difficulty increases due to the necessary tight fit against the wheel
Solution Approach 1:
Instead of relying solely on radial clamping force against the wheel, the device incorporates axial retention features such as protrusions that extend beyond the wheel rim or engage with features on the outer surface of the wheel. This adds a dimensional aspect to position maintenance that reduces the tight fit requirement, allowing easier placement and replacement while maintaining stability during operation.
Data Source
AI summary
A run-flat support system and method for installing the same are disclosed. In one embodiment, the run-flat support system includes a torque assembly removably coupled to a split wheel rim of a pneumatic tired wheel. A plurality of support segments are adapted for attachment to the torque assembly in order to support the pneumatic tired wheel in a flat condition such as an under-inflated condition or deflated condition.