Universal Safety Gate Mechanism for Electrical Outlets
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Solution Overview
Problem
Existing power outlets lack universal safety gate mechanisms that can effectively prevent electroshock accidents caused by foreign objects, particularly for outlets with rated currents above 15 A, as existing safety gates are not applicable to these higher-rated outlets due to differences in plug pin configurations.
Innovation Solution
A safety gate mechanism comprising upper and lower slide plates with inclined slants and recessed platforms that interact with plug pins to selectively cover socket holes, allowing plug insertion while preventing foreign objects from contacting live components, and can be adapted for outlets with rated currents of 15 A and 20 A or above by adjusting the sliding components and resetting mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional safety gate devices are used for outlets with rated current of 15 A or below, then electroshock prevention is achieved, but the device cannot be applied to outlets with rated current of 20 A or above due to different plug pin configurations
Solution Approach 1:
The safety gate device is designed with a universal structure that can accommodate both 15 A outlets (with parallel long slot socket holes) and 20 A outlets (with T-shaped socket holes). The gate body includes movable gate leaves that can be positioned to cover different socket hole configurations, allowing a single device to serve multiple outlet types without requiring separate safety gates for each rated current.
2Reliability
If safety gate devices are added to outlets, then electroshock prevention is improved, but the structure becomes more complicated
Solution Approach 1:
The safety gate employs movable gate leaves that can dynamically open and close. The gate leaves are connected via hinges to the gate body and can be moved between a closed position (covering socket holes for safety) and an open position (allowing plug insertion). This dynamic mechanism provides effective electroshock prevention while maintaining operational convenience, as the gate automatically opens when a plug is inserted and returns to closed position afterward.
3Ease of operation
If socket holes are kept open for easy plug insertion, then ease of operation is improved, but safety is compromised due to risk of foreign object insertion
Solution Approach 1:
The safety gate is positioned to cover the socket holes before any plug or foreign object is inserted. The gate leaves are initially in the closed position, preventing access to live components. When a plug is inserted, the plug's pins contact the gate leaves and force them open, allowing the plug to pass through. This preliminary protective action ensures safety is maintained while allowing legitimate plug insertion.
Data Source
AI summary
A safety gate for selectively covering socket holes of an electrical outlet comprises an upper slide plate comprising an upper space with an upper recessed platform on a first side and an upper slant on an opposed side. A lower slide plate comprises a lower space with a lower slant on a first side and a lower recessed platform on an opposed side. The upper and lower spaces allow load plug pins to pass through, and the intervals of the spaces correspond to the interval of load plug pins. The upper slide plate is stacked with the lower slide plate to overlap the upper recessed platform with the lower slant and the upper slant with the lower recessed platform. The upper slide plate slides relative to the lower slide plate. Load plug pins slide along the inclined slopes of the upper and lower slants to slidingly displace the upper and lower slide plates a distance that is no less than the thickness of a pin.