Pneumatic Valve Spring-Loaded Seal for Easy Pump Attachment
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Solution Overview
Problem
Conventional pneumatic valve systems, such as Schrader and Presta valves, are difficult to attach and detach, often leading to leaks and inaccurate pressure readings due to poor sealing and require significant force and awkward positioning, making them inefficient and uncomfortable to use.
Innovation Solution
A pneumatic valve system with a core body and cap member that includes a sealing plug and biasing member, allowing for easy attachment and detachment with minimal force by using a ball and groove mechanism, eliminating the need for external threaded connections or levered locking chucks, and providing a secure seal with a pin passage and inflation pin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pneumatic valves (Schrader, Presta) are used with locking mechanisms, then the connection reliability is improved, but the ease of operation deteriorates due to requiring two hands and considerable finger strength
Solution Approach 1:
The patent replaces the complex mechanical locking system (lever and chuck) with a simplified spring-loaded sealing mechanism. The pump head attaches to the valve stem through direct pushing, where a spring automatically compresses to create a sealing force, eliminating the need for manual locking operations while maintaining connection reliability.
Solution Approach 2:
The spring mechanism automatically engages and disengages the sealing contact between the pump head and valve stem. When the pump head is pushed onto the valve stem, the spring compresses and creates the seal without requiring additional locking actions. The system self-regulates the sealing force through spring compression, making the operation simple and reliable.
2Reliability
If conventional pneumatic valves use external sealing mechanisms, then the sealing capability is improved, but the device complexity increases due to additional components like locking levers
Solution Approach 1:
The patent merges the sealing function and the connection function into a single integrated mechanism. The spring-loaded seal is built into the valve stem structure itself, and the pump head's attachment mechanism directly engages with this seal. This integration eliminates separate locking components while maintaining effective sealing through the compressed spring contact.
3Reliability
If conventional valves require awkward positioning for extended periods, then the connection stability is improved, but the user comfort deteriorates
Solution Approach 1:
The spring mechanism is pre-compressed during the attachment process itself. When the pump head is pushed onto the valve stem, the spring automatically compresses to the correct sealing force, establishing a stable connection immediately. This preliminary action during attachment eliminates the need for prolonged awkward positioning to maintain connection stability.
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
The new valve system allows for easy, secure, and reliable attachment and detachment of the pump-head to the valve stem with reduced physical effort, preventing leaks and improving user comfort and accuracy of pressure readings.
Implementation Method 1
a biasing member disposed in the interior passageway and arranged to bias the sealing plug to a sealed position
Data Source
AI summary
A pneumatic valve for a tire having a stem fluidly coupled to a pressure vessel is provided. The pneumatic valve includes a core body that couples to the stem, the core body having an interior passageway. A cap is coupled to the core body, the cap having a concavity on an outer diameter and a bore hole extending from one end, the bore hole being in selective fluid communication with the interior passageway. The cap further has an interior portion, the core body being at least partially disposed in the interior portion. A valve seat is disposed in the interior portion between the core body and the cap member. A sealing plug is moveably disposed at least partially in the interior passageway and at least partially within the bore hole. A biasing member is disposed in the interior passageway and arranged to bias the sealing plug against the valve seat.