Ball Valve Tire Stem for Choke-Free Inflation and Deflation
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Solution Overview
Problem
Existing tire valve assemblies for bicycle wheels, particularly tubeless systems, face challenges in efficiently inflating and deflating tires due to choke points and the need for frequent disassembly to remove these choke points, which complicates the process and can lead to inefficiencies.
Innovation Solution
A tire valve assembly with a ball valve mechanism that allows for seamless inflation and deflation by rotating between closed and open positions, utilizing a lever system to control fluid flow through a bore aligned with the valve stem axis, and a valve cap that adjusts to inhibit or facilitate fluid flow, eliminating the need for disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional tire valve assemblies are used, then the structure is simple, but frequent disassembly is required to remove choke points during inflation and deflation
Solution Approach 1:
The patent implements a dynamic valve mechanism that allows the valve core to rotate between open and closed positions without disassembly. The valve stem can be rotated to align the bore with either the inflation port or the deflation port, enabling seamless switching between inflation and deflation modes without requiring take-apart operations.
Solution Approach 2:
The valve assembly is designed to perform multiple functions through a single integrated structure. The same valve stem and bore serve both inflation and deflation purposes by rotating to different orientations, eliminating the need for separate components or disassembly procedures for each function.
2Productivity
If traditional valve assemblies with choke points are used, then the structure is simple, but the inflation and deflation process becomes inefficient
Solution Approach 1:
The valve employs a dynamic rotation mechanism where the valve stem can be manually rotated to change the flow path. During inflation, the bore aligns with the inflation port for high-speed air intake; during deflation, rotation aligns the bore with the deflation port, eliminating choke points and improving efficiency without excessive complexity.
Solution Approach 2:
The valve internal structure is segmented into distinct flow paths for inflation and deflation. The bore can be oriented to connect with either the inflation port or the deflation port, creating separate efficient flow channels for each operation without requiring complex multi-component systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates efficient tire inflation and deflation without choke points, enhancing user convenience and reducing the need for assembly/disassembly, thereby improving the operational efficiency of tire inflation systems.
Implementation Method 1
The valve cap is adjustable relative to the valve stem between a first position where the seal is pressed against the valve stem to inhibit a flow of fluid out of the hollow interior, and a second position where the seal is spaced away from the valve stem to facilitate a limited flow of fluid out of the hollow interior
Implementation Method 2
A tire valve assembly with a ball valve mechanism that allows for seamless inflation and deflation by rotating between closed and open positions
Data Source
AI summary
A tire valve assembly includes a valve stem defining a hollow interior and a valve positioned within the hollow interior. The valve is manually movable between a closed position to inhibit movement of fluid through the valve stem and an open position to facilitate movement of fluid through the valve stem to inflate the tire.