Threaded Valve Connector for Dual Schrader and Presta Compatibility
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Solution Overview
Problem
Existing dual-purpose valve connectors for Schrader and Presta valves are bulky, complex, and prone to loosening due to their lever-controlled connection mechanism, which is easily affected by external objects, making them inconvenient to use.
Innovation Solution
A threaded type valve connector with a connecting member, threaded member, and joint member that includes seal rings and threaded sections to securely connect both Schrader and Presta valves, maintaining airtightness without additional seals, and featuring a simplified structure that reduces the risk of loosening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lever-controlled connection structure is used to connect Schrader and Presta valves, then the valve connector can accommodate both valve types, but the structure becomes complex and prone to loosening
Solution Approach 1:
The valve connector is divided into separate functional modules: a connecting member with air tube connection, a joint member with two different connection assemblies (first for Presta valve, second for Schrader valve), and a threaded member for securing. This segmentation allows each module to perform its specific function independently, simplifying the overall structure while maintaining compatibility with both valve types.
Solution Approach 2:
The joint member serves multiple functions by integrating two different connection assemblies (first connection assembly for Presta valve with internal thread, second connection assembly for Schrader valve with valve needle penetration) into a single component. This multi-functionality eliminates the need for separate connectors for different valve types, reducing structural complexity while maintaining versatility.
2Adaptability or versatility
If a lever-controlled connection structure is used, then both valve types can be connected, but the connection is easy to loosen and requires large space for lever pivoting
Solution Approach 1:
The lever-controlled mechanical connection system is replaced with a threaded fastening system. The threaded member engages with the connecting member through screw threads, providing a more reliable and secure connection that is resistant to loosening. This substitution eliminates the pivoting lever mechanism entirely, improving connection stability while maintaining dual valve type compatibility.
3Reliability
If additional seal rings are added to maintain airtightness, then sealing performance improves, but the structure becomes more complex
Solution Approach 1:
The sealing function is merged into the connection assemblies themselves rather than being separate additional components. The first connection assembly includes a first seal ring integrated with the Presta valve connection, and the second connection assembly includes a second seal ring integrated with the Schrader valve connection. This integration maintains airtightness while avoiding the addition of separate seal components, thus not increasing structural complexity.
Data Source
AI summary
A valve connector includes a connecting member, a threaded member, a joint member, and first and second connection assemblies. The connecting member is inserted into an axial hole of the threaded member to cause an abutting portion of the connecting member to enter into the axial hole. The joint member forms two threaded sections at two opposite ends thereof. The two threaded sections are alternatively detachably connected to a threaded portion of the threaded member so that a first seal ring of the first connection assembly and a second seal ring of the second connection assembly are alternatively removably abutted against the abutting portion for connecting a Schrader valve and a Presta valve.