Quick-Connect Plug Socket Locking Sleeve Design
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Solution Overview
Problem
Existing plug and socket arrangements require significant time and labor for connection and disconnection due to the need for screwing over the entire thread length, especially in densely arranged connections used in automation technology, and previous solutions have high production costs and complex manufacturing processes.
Innovation Solution
A quick-connect plug and socket arrangement featuring a locking sleeve with radially biased projections that engage screw threads, allowing for axial insertion and secure locking without the need for extensive turning, where the sleeve is made from a resilient metal sheet through punching and bending, reducing production costs and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a screw connection is made over the entire thread length to secure the plug member, then connection strength is improved, but connection time and labor expenditure increase significantly
Solution Approach 1:
The connection process is segmented into two distinct phases: a quick axial insertion phase that brings contacts together, followed by a brief turning phase that engages only the last few thread turns for final retention. This segmentation allows the majority of the thread length to remain unengaged during insertion, dramatically reducing connection time while maintaining secure connection through the final locking phase.
2Productivity
If bayonet-like connection possibilities or unthreaded areas are provided to facilitate axial assembly, then connection speed is improved, but production costs and device complexity increase
Solution Approach 1:
Instead of providing unthreaded areas along the entire thread length (excessive action), the invention uses only the necessary portion of the thread - specifically the last few thread turns - for the final locking engagement. This partial use of the thread's full potential achieves secure connection without the need for complex unthreaded areas or bayonet mechanisms, thereby maintaining connection speed while reducing structural complexity.
3Ease of manufacture
If the locking sleeve is made from resilient metal sheet through punching and bending, then manufacturing cost is reduced, but structural complexity increases
Solution Approach 1:
The locking sleeve is constructed from resilient metal sheet material that can be punched and bent into form, creating a flexible yet structurally sound component. This approach eliminates the need for expensive machined parts or complex assemblies, reducing production costs while the inherent flexibility of the thin metal sheet provides the necessary resilient biasing force for the locking projections.
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
Enables fast, secure, and cost-effective connections with reduced assembly time, even in tight spaces, and allows for easy disconnection with minimal turning, while maintaining vibration safety and compliance with industrial standards.
Implementation Method 1
a locking sleeve arranged concentrically between the plug and the circular socket opening... which locking sleeve includes a resilient projection that is radially biased outwardly into locking engagement with screw threads
Data Source
AI summary
A quick-fastening plug and socket arrangement includes a locking sleeve arranged concentrically between the plug and the circular socket opening within which the plug is axially inserted, which locking sleeve includes a resilient projection that is radially biased outwardly into locking engagement with screw threads carried by the inner circumferential surface of the socket opening. Alternatively, the projecting portion is biased radially inwardly for locking engagement with screw threads carried by the outer circumferential surface of the plug member. The sleeve is connected against longitudinal displacement relative to one of the plug and socket members, which sleeve is rotatable relative to the associated plug and socket member, thereby to release the plug for removal from the socket opening.