Pressurizable Adapter for High-Flow Tubeless Tire Inflation
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Solution Overview
Problem
Tire valves for tubeless tires face limitations in air flow rate, particularly at high pressures, which compromises driving safety by restricting the ability to inflate tires efficiently.
Innovation Solution
A pressurizable adapter is introduced that replaces the mechanical part of the valve core, allowing a Schrader valve with a larger diameter to take over the function of a Presta valve, enabling increased air flow by removing the limiting Schrader valve core from the receiving tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Presta valve is used in tubeless tires, then the valve can be installed, but the air flow rate is limited and cannot achieve high pressure inflation
Solution Approach 1:
The patent changes the critical parameter of valve core diameter from the Presta standard (narrow) to the Schrader standard (wide). By installing a Schrader valve core in the tubeless tire adapter, the air flow cross-sectional area increases significantly, enabling high-pressure inflation while maintaining reliable sealing and driving safety.
Solution Approach 2:
The patent separates the valve functions into distinct components: the Presta valve stem remains for installation compatibility, while a separate Schrader valve core is installed in the adapter body. This segmentation allows each component to optimize its function - the Presta stem provides secure mounting, while the Schrader core provides high-flow air passage.
2Productivity
If the receiving tube diameter is limited by the Presta valve core, then the valve structure is compact, but the air flow rate is restricted
Solution Approach 1:
The patent resolves the dimensional conflict by adding a modular adapter component that interfaces between the narrow Presta valve stem and the wide Schrader valve core. This intermediate dimension allows the receiving tube to accommodate both the compact Presta installation footprint and the larger Schrader air flow requirements.
3Productivity
If a Schrader valve core is installed in the adapter, then maximum air flow is achieved, but the valve structure becomes more complex
Solution Approach 1:
The adapter design achieves universality by being compatible with both Presta and Schrader valve systems. The adapter accepts a Presta valve stem for installation while housing a Schrader valve core for high-flow operation. This multi-functional design allows the same adapter structure to serve different valve types, reducing overall system complexity despite the internal Schrader core addition.
Data Source
AI summary
A pressurizable adapter of bicycle valve can be used for a tubeless bicycle tire and contains: a receiving tube, a valve core and a valve cap. The receiving tube includes an internal screw portion, an air outlet, a first connecting part, an air inlet, at least one sealing ring and a connecting section. The valve core used is a standardized valve core. The valve core is housed in the connecting section of the receiving tube, the second connecting section of the valve core is connected to the first end of the receiving tube, and the second connecting portion of the valve core is in contact with the first connecting portion of the receiving tube, so that a closing effect is achieved. The valve cap contains a third connecting portion configured to connect to the first connecting portion and covers the air inlet of the receiving tube.