Rotating Power Plug Adapter for Stable EV Charging Connection
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Solution Overview
Problem
Existing adapters for connecting electric vehicle charging cables to power outlets often result in unstable connections, leading to wire breakage and disconnection due to the weight of the cable and improper orientation, which can cause deformation and render the power plug unusable.
Innovation Solution
A versatile adapter with adjustable blade and earth terminal slots that can be oriented to match either upward or downward terminal slots in the power outlet, ensuring stable conductivity and secure connection without requiring the power plug to be turned upside down, featuring symmetrical slot arrangements and engagement mechanisms to prevent misalignment and accidental disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adapter is used with the earth terminal oriented downward to match power outlets with bottom terminal slots, then the adapter can be connected to the power outlet, but the cable bends downward causing wire breakage or increased electrical resistance
Solution Approach 1:
The adapter allows the earth terminal to be oriented upward instead of downward, inverting the conventional orientation. This enables the cable to extend upward from the power plug rather than downward, preventing cable bending and wire breakage while maintaining proper electrical connection to bottom terminal slots in the power outlet.
Solution Approach 2:
The adapter incorporates a rotatable power plug that can rotate 180 degrees, allowing dynamic adjustment of the earth terminal orientation. This enables the user to switch between upward and downward orientations depending on the power outlet configuration, preventing cable damage while ensuring proper connection.
2Ease of operation
If the power plug is plugged in with the cable extending downward, then the connection can be made, but the cable weight causes the power plug to disconnect unintentionally and fall
Solution Approach 1:
By inverting the orientation so the cable extends upward from the power plug rather than downward, the weight of the cable acts to keep the plug inserted rather than pulling it out. This upward extension configuration prevents unintentional disconnection caused by cable weight.
3Adaptability or versatility
If the power plug is turned upside down to match the adapter orientation, then the connection can be made, but the power plug may be deformed or bent and become unusable
Solution Approach 1:
The power plug is designed to rotate 180 degrees within the adapter body, allowing it to change orientation dynamically without being turned upside down externally. This rotation mechanism maintains proper alignment with the adapter's blade slots and terminal slots while preventing deformation or bending of the power plug components.
Data Source
AI summary
An adapter is placed between a power outlet and a power plug to electrically connect them. The adapter includes a pair of blade slots and a pair of terminal slots arranged in correspondence with a pair of blades and a pair of earth terminals protruding from a power plug. The pair of blade slots is arranged on a first reference line passing through a center of an adapter body in a radial direction, and is arranged laterally symmetrical with respect to a second reference line. The pair of terminal slots is arranged on the second reference line, and is arranged vertically symmetrical with respect to the first reference line.