Hinged Fluid Connector Retainer for Low-Force Tube Locking
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Solution Overview
Problem
Current fluid connection assemblies require high insertion force and often necessitate tools for assembly, are prone to structural integrity issues due to improper retaining clip installation, and can be inefficient in space usage, especially in automotive applications where fluid connectors must securely handle refrigerants.
Innovation Solution
A fluid connection assembly featuring a connector body with a retainer that includes a hinged section with tabs and apertures, allowing for a secure and tool-free assembly with reduced insertion force, and providing a stable, space-efficient connection that can be easily disassembled, utilizing a snap-on plastic retainer with living hinges and inner tabs to lock a standard SAE tube form within the connector body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retaining clip is used to secure the tube to the connector body, then the connection is secure, but the insertion force required is very large and tools are needed for assembly
Solution Approach 1:
The retainer incorporates a resilient section that can deform elastically to allow the tab to pass through the aperture during assembly, then returns to its original shape to lock the tube in place. This dynamic behavior enables tool-free assembly while maintaining secure connection.
Solution Approach 2:
The retainer is divided into distinct functional sections: a resilient section for deformation, a tab for engagement, and a body for structural support. This segmentation allows each part to perform its specific function optimally, reducing assembly force while ensuring reliable locking.
2Reliability
If a retaining clip is used to secure the tube, then the connection is secure, but the installation process is difficult and structural integrity may be compromised
Solution Approach 1:
The retainer is designed to install itself onto the connector body without external tools or complex manipulation. The resilient tab automatically engages with the aperture and locks into place through its elastic deformation and recovery, making installation simple and ensuring proper structural integrity.
3Reliability
If a bolted flange connection is used, then the connection is secure, but space efficiency is reduced and tools are required for assembly
Solution Approach 1:
The retainer fits within the connector body structure, with the tab nesting through the aperture and locking behind the tube shoulder. This nested arrangement provides secure connection without the bulk of external flanges or bolts, improving space efficiency while maintaining reliability.
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 solution enables quick, tool-free assembly with low insertion force, enhances structural integrity by reducing joint movement, and prevents seal contamination, while maintaining a secure connection that is space-efficient and serviceable.
Implementation Method 1
a second section (20B) hingedly connected to the first section (20A)
Implementation Method 2
The retainer (20) is formed from a resilient material and may be snap fitted onto the connector body (40)
Data Source
AI summary
A fluid connection assembly, including a connector body, including a first end, a second end, a first through-bore, and a first radially outward facing surface including at least one aperture extending from the first radially outward facing surface to the first through-bore, and a retainer operatively arranged to be removably connected to the connector body, the retainer including a first section, a second section hingedly connected to the first section, a first radially inward facing surface, and at least one tab extending from the first radially inward facing surface, the at least one tab including a second radially inward facing surface, wherein, in a locked state the at least one tab extends through the at least one aperture and the first radially inward facing surface is arranged proximate the first radially outward facing surface.