Plug Connector Locking Assembly for Low-Force Coupling
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Solution Overview
Problem
Existing plug connector coupling methods require high axial force for connection, which is inefficient and labor-intensive, as they rely on expanding spring devices or locking elements that widen radially during insertion.
Innovation Solution
A method and assembly that utilize a strap-shaped locking element with leg sections and a base leg, where the leg connection sections are arranged to increase the free bending length, reducing the insertion force by changing the support points and extending the lever arms, allowing for easier coupling and reduced axial force requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring devices or locking elements are expanded radially during insertion to form coupling positions, then reliable locking engagement is achieved, but high axial force must be applied making the coupling process labor-intensive
Solution Approach 1:
The locking element transitions from radial expansion to longitudinal engagement. Instead of expanding legs radially outward during insertion, the locking element is guided along the longitudinal axis into engagement slots, changing the dimension of the locking action from radial to axial, thereby reducing the required insertion force while maintaining reliable locking
2Reliability
If the locking element legs are expanded radially during insertion, then positive engagement with coupling slots is formed, but the insertion process becomes inefficient and time-consuming
Solution Approach 1:
The locking element is pre-configured with legs that are already positioned and oriented for engagement before insertion begins. The guiding surfaces and slot alignments are prepared in advance, allowing the legs to slide directly into engagement without requiring radial expansion during the insertion process, thereby improving coupling efficiency
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 method and assembly significantly reduce the insertion force needed for coupling plug connectors by increasing the free bending length of the locking element's legs, making the coupling process easier and more efficient while maintaining a strong holding force.
Implementation Method 1
The locking element (5) is strap-shaped and is in a releasable positive engagement with the two plug connectors (2, 3) when the plug connectors are in the coupling position
Data Source
AI summary
A method for coupling plug connectors to form a plug assembly and a plug assembly is presented. A first and a second plug connector, a sealing element and a locking element are provided. The locking element is arranged in coupling slots of the first plug connector such that a base leg of the locking element is arranged in its center between its two legs in a first position spaced at a first radial distance from a first longitudinal axis. When the second plug connector is inserted into the first plug connector, first leg connection sections are supported on an insertion piece and subsequently second leg sections are supported on the widening section, and, in this process, the base leg is arranged in a second position spaced at a greater second radial distance from the longitudinal axis.