Compact Latching Mechanism for Mid-Power Electrical Connector
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Solution Overview
Problem
Mid-power electrical connectors face challenges with bulky latching mechanisms, requiring significant twisting force for engagement and release, leading to user strain and manufacturing costs, especially when made from metal, and are difficult to use in compact spaces.
Innovation Solution
A compact, durable, and inexpensive latching mechanism using plastic housings with metal latching tabs that flex inwardly and outwardly to engage with receptacle features, allowing easy engagement and release without additional parts, and optional tool-requiring designs for safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional latching mechanism with collar and spiral grooves is used, then the connector achieves secure locking, but the mechanism becomes bulky and complex
Solution Approach 1:
The traditional monolithic collar and spiral groove mechanism is segmented into discrete latching tabs with simplified geometry. Each latching tab operates independently within its own latching channel, dividing the complex rotational locking action into simpler, localized engagement events that reduce overall mechanism complexity while maintaining secure locking
Solution Approach 2:
The invention extracts the essential locking function from the complex collar-spiral groove system and isolates it into separate, simplified latching tabs. By removing the interdependent spiral groove geometry and collar rotation mechanism, the patent retains only the core engagement function, significantly reducing mechanism complexity while preserving reliable locking
2Strength
If metal components are used for durability, then the latching mechanism becomes more durable, but manufacturing costs increase significantly
Solution Approach 1:
Instead of making the entire latching mechanism from metal, the patent applies metal material properties locally only to the latching tabs where strength and durability are critically needed for engagement and locking. The surrounding housing and non-critical components remain plastic, optimizing the balance between durability and manufacturing cost by using expensive materials only where absolutely necessary
3Reliability
If a rotatable collar mechanism is used, then the connector achieves secure locking, but significant twisting force is required causing user strain
Solution Approach 1:
The traditional mechanism requires rotational motion to engage the latch, but the patent inverts the approach by using linear pressing motion on pressing tabs to flex the latching tabs inward for engagement and outward for release. This inversion of the operational motion type reduces the twisting force requirement and makes the mechanism easier to operate, especially in cramped spaces
4Volume of moving object
If the connector design is made compact, then space utilization improves, but the latching mechanism becomes difficult to operate in cramped spaces
Solution Approach 1:
The patent changes the operational dimension from rotational (collar twisting) to linear (pressing tab depression). This dimensional change allows the latching mechanism to be operated effectively in compact spaces where rotational motion is constrained, as linear pressing motion can be accommodated in smaller volumes and is easier to perform with limited finger movement space
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 solution provides a comfortable, safe, and efficient latching system that is easy to use even in cramped conditions, reduces manufacturing costs, and maintains durability with a simplified design that minimizes bulkiness and user effort.
Implementation Method 1
the latching tabs flex inwardly on living hinges as they enter latching channels in the receptacle housing. When the housings are fully mated, the latching tabs spring outward to engage with corresponding latching features
Data Source
AI summary
A latching mechanism for a mid-power electrical connector is compact, strong, easy to disengage, durable, and low in manufacturing cost. The basic system includes a plug housing and a receptacle housing, each molded from plastic as a single piece, and at least one simple, mainly flat, metal latching tab inserted into a side of the plug housing. During connection of the housings, the latching tabs flex inward as they enter channels in the receptacle housing, and then spring outward to engage with receptacle latching features. In embodiments, wedge-shaped inward plastic protrusions in the channels engage with holes in the latching tabs. Unlatching requires only pressing the latching tabs gently inward. In embodiments, plastic pressing tabs can be pressed inward with fingers to flex and release the latching tabs. In other embodiments, the latching tabs are inaccessible to fingers, and a tool is required to release the latching tabs.