Quick Connect Assembly With Visual Full-Engagement Indicator
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Solution Overview
Problem
Existing quick connect fittings lack a reliable method to ensure full engagement during assembly, leading to potential errors in fluid transfer line connections, which can result in leaks or incomplete connections.
Innovation Solution
A quick connect connection assembly featuring a tube end form and an indicator tab that protrudes from the assembly only when fully engaged, providing a visual and potentially trackable indication of a secure connection through radially outward and inward facing surfaces and apertures, ensuring proper alignment and engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional quick connect fittings are used without an indicator mechanism, then the connection speed is fast, but it is impossible to verify whether the connection is fully engaged, leading to assembly errors
Solution Approach 1:
The indicator tab changes its visual state (protruding vs. flush) to indicate connection status. When the tube end form is fully inserted, the indicator tab protrudes from the radially outward facing surface; when not fully inserted, it remains flush with the surface. This visual color/position change provides immediate verification of proper engagement without adding complex verification mechanisms.
Solution Approach 2:
The indicator tab serves as an intermediary element that translates the internal connection state into an externally visible signal. It is operatively arranged to be removably secured to the quick connect, with its position determined by the engagement state of the tube end form, thereby mediating between the hidden connection mechanism and the external observer.
2Reliability
If manual inspection methods are used to verify connection engagement, then no additional components are needed, but assembly errors occur due to human error or oversight
Solution Approach 1:
The connection assembly performs self-verification through the indicator tab mechanism. The system automatically indicates its own engagement state without requiring external inspection tools or human judgment. The indicator tab protrudes or remains flush based solely on the physical engagement state, providing self-evident verification that eliminates human error and reduces verification time.
Solution Approach 2:
The indicator tab provides immediate visual feedback about the connection state. As the tube end form is inserted, the indicator tab's position changes in real-time, giving continuous feedback to the operator about whether proper engagement has been achieved, thereby ensuring reliable assembly without time-consuming inspection procedures.
3Loss of information
If an indicator mechanism is added to show connection status, then connection verification becomes possible, but the device structure becomes more complex
Solution Approach 1:
The indicator tab is integrated into the existing quick connect structure and serves multiple functions: it acts as both a structural component of the connection assembly and a visual indicator of engagement status. The tab is operatively arranged to be removably secured to the quick connect, allowing it to fulfill both mechanical and informational roles without requiring a completely separate indicator system.
Solution Approach 2:
The indicator mechanism is implemented locally at the connection interface rather than as a system-wide complex mechanism. The indicator tab is positioned at the radially outward facing surface where it can be easily observed, and its simple protruding/flush state provides localized information about the specific engagement status without requiring complex global monitoring systems.
Data Source
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AI summary
A quick connect connection assembly, including a quick connect (160), including a first end (162), a second end (174), a first radially outward facing surface (164A), a first radially inward facing surface (178), a second radially inward facing surface (180), and at least one aperture (167) extending from the first radially outward facing surface to the first radially inward facing surface, and an indicator tab (140) operatively arranged to be removably secured to the quick connect, the indicator tab including at least one tab (148) having a tongue (152), wherein the at least one tab (148) is arranged to extend through the at least one aperture (167) and radially inward from the first radially inward facing surface (178).