Push-to-Connect Conduit Fitting for High-Pressure Sealing
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Solution Overview
Problem
Existing conduit fittings require complex assembly processes, including threading and machining, and often fail to provide reliable seals under high pressure and vibration, especially in automotive applications where long-term durability and ease of use are critical.
Innovation Solution
A push-to-connect conduit fitting system that uses a non-threaded mechanical connection, incorporating a ferrule and retaining ring mechanism for secure grip and seal, allowing for single-action assembly without machining or shaping of the conduit, and featuring intrinsic gauging for assembly confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional threaded fittings are used, then reliable connection is achieved, but assembly complexity and time increase
Solution Approach 1:
The fitting is divided into distinct functional components: a body with seal mechanism, a ferrule for gripping, and a retaining ring for locking. This segmentation allows each component to perform its specific function efficiently while simplifying the overall assembly process through push-to-connect engagement.
Solution Approach 2:
The threading operation is completely removed from the assembly process. Instead of requiring threaded engagement, the design extracts the connection function and replaces it with a push-to-connect mechanism that achieves reliable attachment without complex assembly steps.
2Reliability
If traditional fittings require threading and machining, then secure connection is achieved, but manufacturing complexity and time increase
Solution Approach 1:
The ferrule is pre-formed with gripping surfaces and the body is pre-equipped with seal mechanisms and retention features. This preliminary preparation of components allows the final assembly to be completed through simple push-to-connect action without requiring threading or machining operations during installation.
3Ease of operation
If conventional fittings are used, then connection is achieved, but vibration resistance and seal reliability under high pressure deteriorate
Solution Approach 1:
The retaining ring provides dynamic locking capability that adapts to vibration and pressure conditions. The ferrule's gripping surfaces maintain constant contact pressure on the conduit, and the seal mechanism dynamically responds to pressure changes, ensuring reliable sealing under high pressure and vibration conditions while maintaining easy push-to-connect assembly.
Data Source
AI summary
A push to connect fitting includes a body member adapted to receive a conduit end, a conduit comprising a first end that can be axially inserted into the body member and a conduit gripping device attached to an exterior surface of the conduit, and a retainer that retains the conduit in place when said conduit is fully inserted into the body member. Additional embodiments include providing a seal with the fitting that seals the exterior surface of the conduit, an optional load retaining sleeve for the conduit gripping device, and an optional gimbal. The push to connect aspect may be realized in the form of a single action unthreaded mechanical connection.