Compact Locking Device for EV Power Feeding Plug
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Solution Overview
Problem
The existing locking devices for power feeding plugs in electric vehicles are bulky due to the requirement of a movable lock bar, which compromises their compactness and security, as they need space for movement, making them less efficient in preventing unauthorized removal and theft.
Innovation Solution
A compact locking device with a pivotable lock mechanism that includes a planar surface lock member and an actuator, utilizing a worm gear mechanism and absorption mechanism to securely lock the power feeding plug without the need for extensive space, ensuring secure and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movable lock bar is used to lock the power feeding plug, then the locking function is achieved, but the device size increases due to the space required for lock bar movement
Solution Approach 1:
The lock member is divided into a fixed portion and a movable portion that can pivot relative to each other. The movable portion includes a locking protrusion that engages with a groove on the power feeding plug, while the fixed portion provides structural support. This segmentation allows the locking function to be achieved with minimal movement space.
Solution Approach 2:
The lock member pivots in a plane parallel to its planar surface, utilizing rotational movement rather than linear translation. This dimensional change from linear to rotational movement significantly reduces the space required for the locking mechanism while maintaining effective locking capability.
2Reliability
If a lock bar with movement space is provided, then the power feeding plug can be locked, but the compactness of the device is reduced
Solution Approach 1:
The lock member is integrated with the housing structure, where the fixed portion is directly formed on or connected to the housing. This merging eliminates the need for separate mounting structures and reduces overall device complexity while maintaining locking capability.
Solution Approach 2:
The lock member transitions from a static structure to a dynamic one with a pivotable movable portion. This dynamic design allows the lock to engage and disengage smoothly with minimal space, improving compactness while maintaining reliable locking functionality.
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 compact and secure locking mechanism that effectively prevents unauthorized removal of the power feeding plug, enhancing safety and reducing the risk of theft while maintaining a compact design.
Implementation Method 1
utilizing a worm gear mechanism and absorption mechanism to securely lock the power feeding plug
Data Source
AI summary
A locking device for a power feeding plug that prevents unauthorized removal of the power feeding plug from an inlet. The locking device includes a lock mechanism that locks the power feeding plug to the inlet. The lock mechanism includes an actuator and a lock member pivotable by the actuator between a lock position, at which the lock member locks the power feeding plug to the inlet, and an unlock position.