Lockable USB Connector With Spring Clip Retention
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Solution Overview
Problem
USB connections lack a secure attachment mechanism, allowing for easy unauthorized removal, which is a concern for devices requiring secure attachment even under extreme forces.
Innovation Solution
A lockable USB connector system featuring a receptacle with an opening and a spring clip having a plug retention tang oriented perpendicular to the engagement surface, which engages with the receptacle's opening to provide positive retention, and is secured using a two-piece case for authorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If USB plug retention prongs are made resilient to allow easy insertion and removal, then ease of operation is improved, but security against unauthorized removal deteriorates
Solution Approach 1:
The connector system is segmented into two functional parts: a resilient retention mechanism for easy operation and a separate locking mechanism for security. The locking mechanism includes a locking element with a locking surface that engages with a receptacle, creating a distinct security function separate from the resilient retention prongs.
Solution Approach 2:
The locking mechanism introduces dynamic states to the connector system. The locking element can be in a locked position (resisting removal forces) or an unlocked position (allowing removal). This dynamic capability allows the same connector to provide both easy operation when unlocked and security when locked, resolving the contradiction between these two requirements.
2Reliability
If a locking mechanism is added to secure USB connections, then security against unauthorized removal is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is merged with the existing retention prong structure. The locking element is positioned to work in conjunction with the resilient retention prongs, combining the security function with the existing easy-operation function in a unified connector design rather than adding a completely separate mechanism.
Solution Approach 2:
The locking element acts as an intermediary between the plug and receptacle, providing the security function. It mediates the interaction between the two components by engaging with the receptacle's locking surface, allowing security to be added without fundamentally redesigning the entire connector system.
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 system ensures secure attachment of USB devices, resisting unauthorized removal forces and allowing only authorized personnel to disconnect the device.
Implementation Method 1
the spring clip having a plug retention tang... When the spring clip assumes a locking position the plug retention tang aligns with the opening
Implementation Method 2
the plug retention prongs 20, being made of resilient material, naturally return inwardly toward an inner holding position and the detents 22 at least partially fall into the holes 32, creating a releasable snap fit
Data Source
AI summary
A lockable connector includes a receptacle having an opening located on an engagement surface and a spring clip slidably attached to the receptacle, the spring clip having a plug retention tang oriented substantially perpendicular to the opening on the engagement surface, the plug retention tang being positioned on the spring clip so that when the spring clip assumes a locking position the plug retention tang aligns with the opening located on the engagement surface of the receptacle.