Universal Tire Valve Connector With Piston-Sealed Air Coupling
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Solution Overview
Problem
Existing tire valve systems require multiple adapters for different valve types (Dunlop, Presta, Schrader), leading to inconvenience and wear, as users struggle to identify the correct adapter and manage constant changes, compromising the tightness of the connection.
Innovation Solution
A universal connecting device with a hollow body, pressure chamber, and piston system that accommodates various valve types by using a central seal and spring-loaded piston to ensure pressure-tight connections without the need for adapters, allowing compressed air to flow into the tire valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple interchangeable adapters are used for different valve types, then compatibility with various valve types is improved, but device complexity and ease of operation deteriorate due to the need to manage and change multiple adapter pieces
Solution Approach 1:
The connecting device incorporates a universal valve receptacle with a circumferential seal that can accommodate multiple valve types (Dunlop, Presta, Schrader) through a single integrated design. The seal is positioned and dimensioned to create pressure-tight connections with different valve stem diameters, eliminating the need for multiple interchangeable adapters while maintaining compatibility across all valve types
2Adaptability or versatility
If multiple interchangeable adapters are used for different valve types, then compatibility with various valve types is improved, but ease of operation deteriorates due to difficulty in identifying the correct adapter
Solution Approach 1:
The connecting device uses a single universal adapter design with a valve receptacle that accepts all three major valve types through its circumferential seal mechanism. Users no longer need to identify or select from multiple adapter types, as the universal design automatically accommodates different valve stems through proper sealing geometry
3Adaptability or versatility
If interchangeable adapters are constantly changed, then compatibility with various valve types is improved, but reliability deteriorates due to wear compromising connection tightness
Solution Approach 1:
The universal connecting device features a circumferential seal in the valve receptacle that is designed to work with multiple valve types without wear. The seal creates a pressure-tight connection that remains reliable across different valve stems, eliminating the wear issues associated with constantly changing interchangeable adapters
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 safe and convenient filling of tires with different valve types without additional adapters, reducing wear and ensuring a secure, airtight connection, thus improving user experience and extending adapter lifespan.
Implementation Method 1
a spring element, i.e. an elastically deformable device, in a second direction, opposite to the first direction
Implementation Method 2
the pressure chamber and the air inlet of the tire valve into pressure-tight communication with one another
Implementation Method 3
The compressed air connection (5) serves to conduct compressed air from a compressed air source into the pressure chamber (23)
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The invention relates to a connecting device (1) for connecting a tire valve of a pneumatic tire to a compressed air source, wherein the tire valve is optionally a Dunlop valve (25), a Schrader valve (27), or a Presta valve (26), each comprising a valve stem (28) with a valve element. The connecting device comprises a hollow body (3) with a pressure chamber (23) which is in flow communication with a compressed air connection (5). A valve receptacle (20) includes a circumferential seal for interaction with the valve stem. A piston (6) pre-tensioned by a spring element is arranged in the pressure chamber (23), which, when a Presta valve (26) or a Dunlop valve (25) is inserted into the valve receptacle (20), can be displaced against a restoring force of the spring element (8) and ensures a flow connection between the air inlet of the inserted Presta valve (26) or Dunlop valve (25) and the pressure chamber (23).The piston (6) can be moved in the pressure chamber (23) by supplying compressed air in order to interact with the valve element of a Schrader valve (27) inserted into the valve receptacle (20).