Electric Shock-Proof Plug With Retractable Connector
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Solution Overview
Problem
The existing plugging and unplugging processes of electrical equipment can lead to electric shock accidents due to the generation of electric arcs, especially when children or metal objects come into contact with exposed power supply holes, and require significant force to remove the plug safely.
Innovation Solution
An electric shock-proof plug design featuring an insulating sleeve, a plug body, and a reset member, where the plug body moves between high and low positions within the sleeve, exposing or retracting the connector, and utilizing a sliding member and spring mechanism to prevent electric shocks during unplugging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the plug is manually inserted into the power supply hole, then the electrical equipment can be easily connected to power supply, but an electric arc may be generated causing electric shock
Solution Approach 1:
The plug body is pre-positioned in a retracted state within the insulating sleeve, so that when the plug is inserted into the power socket, the connector is already protected inside the insulating sleeve. This preliminary protective position prevents direct contact between the connector and power socket, eliminating electric arc generation during the plugging action while maintaining ease of operation.
2Object-affected harmful factors
If the plug is manually pulled out from the power supply hole, then the power supply hole becomes exposed creating safety hazard, but a large force is needed and electric arc may be generated
Solution Approach 1:
The plug incorporates a movable plug body that can dynamically transition between retracted and exposed positions. During unplugging, the plug body automatically moves from retracted to exposed position, allowing the connector to be pulled out smoothly without requiring excessive force. This dynamic mechanism ensures the power supply hole remains covered when not in use, eliminating exposure risks while reducing the force needed for unplugging.
3Ease of operation
If the connector is exposed for connection, then electrical connection can be established, but the power supply hole remains exposed creating safety hazard
Solution Approach 1:
The plug body with the connector is nested within the insulating sleeve. The insulating sleeve acts as a protective outer shell that covers the power supply hole when the plug is not in use. When connection is needed, the plug body moves outward from the nested position to establish electrical contact. This nested structure allows the connector to be exposed only when necessary for connection, while keeping the power supply hole covered at all other times, thus maintaining both electrical connection capability and safety.
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 effectively prevents electric shocks during unplugging by retracting the connector into the insulating sleeve, ensuring user safety and reducing the risk of accidents.
Implementation Method 1
the reset member is biased by the plug body to generate an elastic resetting force
Data Source
AI summary
The present disclosure discloses an electric shock-proof plug that comprises an insulating sleeve, a plug body, and a reset member. The plug body is movably disposed in the insulating sleeve. An inner wall of the insulating sleeve comprises a guiding groove, and an outer wall of the plug body comprises a sliding member movably coupled to the guiding groove. The sliding member moves in the guiding groove to drive the plug body to move between a high position and a low position. When the plug body moves to the low position, a connector of the plug body is exposed out of the insulating sleeve, and the reset member generates an elastic resetting force. When the plug body moves to the high position, the connector is retracted back into the insulating sleeve. A user will be prevented from getting an electric shock when unplugging the electric shock-proof plug.