Fluid connection assembly
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Solution Overview
Problem
Current fluid connection assemblies for refrigeration systems require high insertion force and often necessitate tools for assembly, with retaining clips being difficult to install and prone to loss, and lack clear indication of connection state.
Innovation Solution
A fluid connection assembly comprising a connector body with a groove and a retainer with elastically deformable arms and a projection that engages the groove, allowing for quick assembly and secure connection of a tube without the need for tools, while providing a clear indication of the connection state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a traditional retaining clip design is used, then the connection is secure, but the insertion force required is very large and tools are needed for assembly
Solution Approach 1:
The retainer arms are designed to be elastically deformable, allowing them to dynamically adjust during assembly. The arms flex outward during insertion to accommodate the tube, then spring back to engage the groove, providing a self-adjusting mechanism that reduces insertion force while maintaining secure connection
Solution Approach 2:
The retainer geometry is changed from a rigid clip to an elastic structure with specific arm configurations. The arms include rounded ends and are positioned at specific angles (e.g., 45 degrees) to optimize the distribution of insertion force and engagement mechanics, transforming the force requirement from concentrated to distributed
2Productivity
If a traditional retaining clip is used, then connection is achieved, but the assembly process takes a long time and requires tools
Solution Approach 1:
The retainer is designed as a self-installing component that does not require external tools. The elastic arms automatically engage with the groove when the tube is inserted, and the structure self-secures through its inherent elasticity, eliminating the need for pliers or other assembly tools
Solution Approach 2:
The retainer is divided into multiple independent arms (typically three or four) spaced around the connector body. This segmentation allows each arm to independently engage the groove, distributing the assembly action and enabling quick installation without complex tool requirements
3Shape
If thin retaining clips are used, then the device is compact, but the clips are easy to lose if dropped or misplaced
Solution Approach 1:
Multiple retainer arms are combined into a single integrated retainer component that is permanently attached to the connector body. This merging eliminates the risk of individual clips being lost, as the entire retainer assembly remains fixed to the connector, while still maintaining a compact overall structure
Solution Approach 2:
The retainer is pre-installed and permanently attached to the connector body in a preliminary manufacturing step. This preliminary action ensures the retainer is always in position and cannot be lost during field operations, while the elastic arms maintain the compact design required for refrigeration system components
4Loss of information
If current connection assembly solutions are used, then connection is achieved, but there is no indication of the connection state
Solution Approach 1:
The retainer arms are designed with visual indicators that change appearance based on engagement state. When the arms are engaged with the groove, they assume a specific position that can be visually confirmed, providing clear feedback on connection status without adding complex indicator mechanisms
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
Reduces the insertion force required for assembly, facilitates quick and tool-free connection, and ensures secure engagement of the tube, enhancing the structural integrity and ease of use of the fluid connection.
Implementation Method 1
a retainer, including a plate including a second through-bore, at least one arm, each arm of the at least one arm including a proximal end connected to the plate and a distal end, and a projection connected to the at least one arm at the distal end, the projection operatively arranged to engage the groove to connect the retainer to the connector body
Data Source
AI summary
A fluid connection assembly, including a connector body, including a first end, a second end, a first through-bore, a first radially outward facing surface including a groove, and a first radially inward facing surface, and a retainer, including a plate including a second through-bore, at least one arm, each arm of the at least one arm including a proximal end connected to the plate and a distal end, and a projection connected to the at least one arm at the distal end, the projection operatively arranged to engage the groove to connect the retainer to the connector body.