Plug-In Connector Clip Locking for Full Insertion Verification
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Solution Overview
Problem
Existing plug-in connectors for hose and pipe connections lack secure locking mechanisms, allowing for accidental release and incomplete insertion detection, leading to unreliable connections under high temperature and pressure conditions.
Innovation Solution
A resilient retaining clip with two pairs of diametrically opposite spring arms, arranged in a U-shape, is designed to lock in a retaining position only when the plug part is fully inserted, serving as both a latching mechanism and an indicator of correct insertion, without requiring additional components. The clip is pre-assembled on the coupling part and features guide pins and inclined surfaces for secure engagement and locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a resilient ring retaining clip is used without locking mechanism, then the plug-in connector can be easily assembled and disassembled, but the connection is not secure against accidental release
Solution Approach 1:
The retaining clip is designed with dynamic characteristics, being resilient and movable between insertion and retaining positions. The clip can be easily actuated for assembly/disassembly but locks securely in the retaining position through the locking element engagement, providing both ease of operation and reliability
Solution Approach 2:
The locking element changes its positional parameter from a first position (allowing movement) to a second position (locking position). This parameter change transforms the retaining clip from a movable state to a locked state, securing the connection while maintaining ease of operation during intentional actuation
2Device complexity
If no indication mechanism is provided, then the device structure remains simple, but it is impossible to ensure whether the plug part is completely plugged in and correctly blocked
Solution Approach 1:
The retaining clip serves as a visual indicator through its positional state. When the locking element is in the locked position, the retaining clip is held in the retaining position, providing visible information that the plug part is correctly inserted and secured. This indicator function is achieved without adding complex separate indication mechanisms
Solution Approach 2:
The retaining clip performs multiple functions: it retains the plug part, provides visual indication of correct insertion, and works in conjunction with the locking element for secure locking. This multi-functionality eliminates the need for separate indication components, maintaining structural simplicity while providing complete insertion information
3Productivity
If the retaining clip can be moved into the retaining position without complete insertion, then the assembly process is faster, but the connection is not secure and may not be correctly blocked
Solution Approach 1:
The locking element is pre-configured to engage with the retaining clip only when the plug part is completely inserted. This preliminary configuration ensures that the locking action can only occur after correct insertion, preventing premature locking while maintaining efficient assembly speed
Solution Approach 2:
The system provides mechanical feedback through the interplay between the locking element and retaining clip. The locking element can only transition to the locked position when the plug part is fully inserted, providing automatic feedback that confirms correct insertion before securing the connection
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
Ensures secure locking of the plug part against accidental release and provides a visual indication of correct insertion, maintaining connection integrity under high temperature and pressure conditions, while simplifying manufacturing and assembly.
Implementation Method 1
a radially slotted retaining clip (3), which is resiliently elastic at least in portions, comprising at least two latching arms
Implementation Method 2
The resilient force of the ring holds the ring in the retaining position
Data Source
AI summary
A plug connector including a coupling part with a receiving opening into which a plug part, having a plug shaft with a collar, can be inserted. The plug connector also includes a resilient, radially slotted retaining clip having at least two spring arms and which can be pre-assembled on the coupling part and moved radially between an insertion position and a holding position for the plug part. The plug part can be inserted into the receiving opening when the retaining clip is in the insertion position, and when in the holding position he plugged-in plug part, and the collar thereof, can be blocked by the retaining clip against being pulled out. In the insertion position, the retaining clip projects with respect to the outer circumference of the coupling part, and in the holding position the retaining clip is flush with the outer circumference of the coupling part.