Presta Valve Nozzle Adapter With One-Handed High-Pressure Release
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Solution Overview
Problem
Existing nozzle adapters for Presta valves are cumbersome and inconvenient to connect and disconnect, especially at high pressures, and existing solutions for other valve types are not applicable.
Innovation Solution
A nozzle adapter designed with a connection seat, control elements, returning elements, and a seal cover, allowing for one-handed operation and automatic disconnection from the Presta valve, featuring engaging portions that securely engage and disengage with the valve under high pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rubber pressing mechanism is used to engage the inflation valve, then the engagement is simple and quick, but the engagement is poor and the rubber is easily removable at high pressure
Solution Approach 1:
The engagement mechanism is divided into multiple teeth (segmented structure) that engage with the male threads of the inflation valve separately, distributing the engagement force and improving overall engagement stability while maintaining ease of operation
Solution Approach 2:
The slidable block can move dynamically between engaged and disengaged positions, allowing quick connection and disconnection while maintaining secure engagement during inflation through the controlled movement of multiple teeth
2Reliability
If a rotatable screwing mechanism with female and male threads is used, then the engagement is secure at high pressure, but the operation is slow and troublesome
Solution Approach 1:
The multiple teeth are pre-positioned on the slidable block to align with the male threads, allowing immediate engagement upon pushing the fitting sleeve forward without requiring rotational screwing motion
Solution Approach 2:
The rotational screwing action is extracted and replaced with a linear pushing motion of the fitting sleeve that directly drives the slidable block to engage the teeth with the male threads, simplifying the operation while maintaining security
3Reliability
If a slidable block with multiple teeth controlled by a fitting sleeve is used, then the engagement is secure at high pressure, but the operation is inconvenient
Solution Approach 1:
The control function of the fitting sleeve is merged with the engagement function by integrating the mechanism where pushing the fitting sleeve forward simultaneously controls the slidable block movement and engages the multiple teeth with the male threads in a single motion
Solution Approach 2:
The slidable block automatically engages and disengages the multiple teeth with the male threads through the pushing and pulling motion of the fitting sleeve, making the system self-operating without requiring additional manual manipulation
4Ease of operation
If manual operation of the fixing device is required to connect and remove the nozzle adapter, then the connection can be controlled, but the operation is troublesome
Solution Approach 1:
The nozzle adapter system is designed to be self-operating where the fitting sleeve controls the slidable block which automatically engages and disengages the multiple teeth with the male threads, eliminating the need for complex manual manipulation of separate fixing devices
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
Enables easy and convenient one-handed connection and disconnection of the nozzle adapter to a Presta valve, ensuring secure engagement and disengagement even at high inflation pressures.
Implementation Method 1
at least one returning element arranged on the at least one control element so that the engaging portion is pushed into the engagement position
Implementation Method 2
when an inflation pressure is excessive, the Presta valve is pushed outward by the air pressure, and two engaging portions of two control elements are pulled to a screwing portion of the Presta valve so that two engaging portions engage with a screwing portion of the Presta valve more forcefully
Data Source
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AI summary
A nozzle adapter for a Presta valve contains: a connection seat, at least one control element, at least one returning element, a seal cover, and a controlling means. The connection seat includes an imaginary axis line, an inlet, an outlet, an air stop ring, a conduit, an engagement position, a coupling slot, and a stopping means. A respective control element has a fixing shaft, an engaging portion, and a controlled portion. The at least one returning element is arranged on the at least one control element. The seal cover is fixed outside the coupling slot, and an airtight space is defined in the coupling slot. The controlling means mounted on a center of the connection seat opposite to the inlet and in the conduit of the airtight space to move with the controlled portion.