Push-to-Connect Coupling Layout to Prevent Conduit Scratching
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Solution Overview
Problem
Existing push-to-connect couplings for conduit systems often score or scratch the outer surface of the conduit during insertion, compromising the effectiveness of the seal.
Innovation Solution
A push-to-connect coupling design featuring a toothed gripping ring located outboard of the seal, with a wiper positioned further outboard to clean the conduit surface and ensure a watertight seal, and a cap that secures the components with sonic or spin welding, preventing damage to the conduit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the gripping ring is located outboard of the seal, then the coupling can secure the conduit, but the gripping ring scores or scratches the outer surface of the conduit
Solution Approach 1:
The coupling is divided into distinct functional segments: a seal member positioned inboard to contact the conduit surface, and a gripping ring positioned outboard to engage the conduit. This segmentation allows each component to perform its specific function without interfering with the other, preventing the gripping ring from scratching the conduit surface while maintaining secure connection.
Solution Approach 2:
The seal member acts as an intermediary element between the conduit and the gripping ring. It is positioned between the gripping ring and the conduit surface, preventing direct contact between the gripping ring teeth and the conduit outer surface, thereby eliminating scratching while still allowing the gripping ring to secure the conduit.
2Strength
If adhesive is used to secure conduit connections, then the connection is secure, but installation time and cost increase
Solution Approach 1:
The coupling mechanism is designed to be self-securing through the interaction between the gripping ring and conduit. The gripping ring automatically engages and secures the conduit upon insertion, eliminating the need for external adhesives or additional fastening steps, thereby reducing installation time and cost while maintaining connection security.
Solution Approach 2:
The mechanical gripping system replaces the chemical bonding system (adhesive). Instead of using adhesive to create a secure connection, the patent employs a mechanically actuated gripping ring that physically engages and secures the conduit through friction and mechanical interlocking, providing immediate secure connection without waiting for adhesive curing.
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 design prevents conduit surface scratching while ensuring a secure and watertight connection without the need for adhesives, reducing installation time and costs.
Implementation Method 1
The seal provides a watertight seal between the coupling and the conduit
Implementation Method 2
The seal provides a watertight seal between the coupling and the conduit
Implementation Method 3
The gripping ring engages the conduit to secure the connection between the coupling and the conduit
Implementation Method 4
a cap that secures the components with sonic or spin welding
Implementation Method 5
a cap that secures the components with sonic or spin welding
Data Source
AI summary
A quick coupling system where a conduit can be pushed into the coupling to secure and seal the conduit with the coupling includes a gripping ring and a seal. The seal is located outboard of the gripping ring so that the gripping ring does not damage the outer surface of the conduit engaged by the seal. The coupling system also may include a wiper outboard of the seal to clean the outer surface of the conduit as the conduit is inserted into the coupling system.