Segmented Tire Pressure Safety Device
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Solution Overview
Problem
Existing tire technologies fail to maintain a predetermined minimum pressure after damage, leading to safety risks and high costs due to the need for entire tire replacement, and are not compatible with standard wheel rims and tires.
Innovation Solution
A pressure safety device with multiple circularly closed hoses arranged around the tire axis, connected via a common feed connection and detachable feed lines, allowing for individual hose replacement and inflation to restore desired pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single tire is used, then the structure is simple and cost-effective, but the tire must be completely replaced after damage leading to high costs and safety risks
Solution Approach 1:
The tire is divided into multiple independent hoses (typically 3-6 hoses arranged in a circle), each capable of maintaining pressure independently. When one hose is damaged, the others remain intact and can be individually replaced, avoiding complete tire replacement and maintaining safety.
2Reliability
If tires with chambers are used, then pressure can be maintained after damage, but the device complexity increases and compatibility with standard rims is lost
Solution Approach 1:
Instead of complex internal chambers, the invention uses multiple simple circular hoses arranged in a circle within the tire. Each hose is a simple closed loop that can be independently replaced, reducing structural complexity while maintaining the ability to preserve pressure after damage.
Solution Approach 2:
The hose assembly is designed to be compatible with standard wheel rims and tires, allowing the safety feature to be integrated into conventional tire systems without requiring specialized components or modifying the rim structure.
3Reliability
If run-flat tires with reinforced sidewalls are used, then driving can continue after damage, but the tire replacement cost remains high and handling performance is compromised
Solution Approach 1:
By dividing the tire into multiple independent hoses, the system enables selective replacement of only the damaged hose rather than the entire tire. This segmented approach reduces replacement costs while maintaining the ability to continue driving temporarily after damage by inflating the remaining intact hoses.
Data Source
Figure 1~3
Figure 4~5
Figure 6~7b
AI summary
The invention relates to a pressure safeguard device (1) for wheels filled with compressed air, comprising at least two tubes which are arranged so as to run adjacently about the wheel axle and each of which comprises a supply line (3) for compressed air and a common supply connection (4). A connectable and releasable connection is formed on each supply line (3) between the tube (2) and the common supply connection (4). The tubes (2) are preferably releasably connected together so as to form a stack of tubes (2), the lateral regions of which directly adjoin one another along the circumference of the tubes, by means of a connection device (5, 6) which is separate from the tires. If one tube (2) is damaged, the other tubes (2) remain intact and expand together into the entire region between the rim (7) and the tire (8). By refilling compressed air into the intact tubes, the desired tire pressure can be achieved without changing the wheel or the tire.