Power Outlet Retention Mechanism for Secure Plug Locking
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Solution Overview
Problem
Loosely plugged connections between power outlets and plugs can lead to overheating, electrical arcing, and increased risk of fires, as well as damage to sockets and plugs due to lack of retention, posing safety hazards.
Innovation Solution
A power outlet and plug combination featuring a ground pin with an indent and a retention mechanism, where a rod interacts with the indent to securely lock the plug in place, preventing removal and ensuring proper connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional power outlet without retention mechanism is used, then the plug can be easily inserted and removed, but the connection becomes loose leading to overheating, electrical arcing, and fire hazards
Solution Approach 1:
The retention mechanism is activated automatically upon plug insertion, engaging the rod with the ground pin indent before any electrical connection is established. This preliminary mechanical securing prevents loose connections and subsequent electrical hazards during operation
Solution Approach 2:
The rod acts as an intermediary mechanical element between the receptacle and plug, physically bridging the gap and maintaining secure contact. The rod engages with the indent on the ground pin to provide positive retention, preventing the harmful effects of loose connections
2Reliability
If a power outlet with retention mechanism is used, then the plug is securely locked in place preventing loose connections, but the device complexity increases
Solution Approach 1:
The retention mechanism is segmented into distinct functional components: the rod for mechanical engagement, the spring for providing retention force, and the indent on the ground pin for positive locking. This segmentation allows each component to be simple in design while collectively providing secure retention
Solution Approach 2:
The retention mechanism is self-activating through spring force that automatically engages the rod with the ground pin indent upon plug insertion. The spring-loaded design provides automatic retention without requiring external actuation or complex control systems, simplifying the overall device complexity
3Reliability
If the rod is seated within the indent of the ground pin, then the electrical plug is prevented from removal, but the ease of operation for plug removal decreases
Solution Approach 1:
The retention mechanism transitions from a static locked state to a dynamic release state when removal force is applied. The spring-loaded rod can move dynamically to disengage from the indent, allowing easy plug removal when needed while maintaining secure retention during normal operation
Solution Approach 2:
The retention mechanism applies preliminary mechanical resistance to prevent unintended plug removal. However, this resistance is designed to be overcome by deliberate user action, providing preliminary protection against accidental disconnection while allowing intentional removal when required
Data Source
AI summary
An apparatus includes an electrical plug insertable into a power outlet of a receptacle, where the electrical plug includes a ground pin with an indent. The apparatus further includes a retention mechanism enclosed by the receptacle includes a rod configured to interact with the indent of the ground pin, where the rod seated within the indent of the ground pin prevents a removal of the electrical plug from the power outlet.