Dual Shutter Structure to Prevent Single-Plug Insertion Jamming
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Solution Overview
Problem
Existing power converters lack effective safety mechanisms to prevent single-plug insertion, leading to potential electric shock risks, especially when children play with them, and the safety door protection structure often gets stuck and cannot be reset.
Innovation Solution
An anti-single-plug protection door system with a first and second protective door that move in the same direction, utilizing a spring mechanism and sliding columns to ensure smooth operation and prevent sticking, combined with inclined guide surfaces and limit blocks to secure the doors in place, ensuring safe and reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety door protection structure is added to the power converter, then the protection function against single-plug insertion is improved, but the safety door gets stuck and cannot be reset during use
Solution Approach 1:
The patent makes the protection door structure dynamic by introducing a spring component that enables automatic resetting. The door can move between locked and unlocked positions, and the spring provides the restoring force to return the door to its initial state after being pushed open, transforming the static door structure into a dynamic system that automatically resets after use.
Solution Approach 2:
The protection door is divided into multiple components: the door body, the spring mechanism, and the guide structure. This segmentation allows each component to perform its specific function - the door provides protection, the spring provides resetting capability, and the guide ensures proper movement - thereby solving the contradiction between maintaining protection function and enabling easy reset.
2Reliability
If the first protective door and second protective door are arranged to contact and interfere with each other, then the safety protection role is improved, but the device complexity increases
Solution Approach 1:
The patent merges the functions of two protective doors into a single integrated structure where the first and second protective doors contact and interfere with each other. This combined structure provides enhanced safety protection while avoiding the complexity of completely separate door mechanisms, as the doors work together as a coordinated system rather than independent components.
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 system effectively prevents single-plug insertion and ensures the safety doors can be reset, reducing the risk of electric shock and improving overall safety by maintaining door functionality.
Implementation Method 1
a spring group (5) arranged between the first protective door (3) and the front end of the upper surface of the bracket (2)
Data Source
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AI summary
The invention discloses an anti-single-plug protection door for a multinational power converter, which comprises a main body cover, a bracket arranged in the main body cover, a first protection door arranged on the bracket, a second protection door arranged on the bracket and a spring set arranged between the first protection door and the front end of the bracket, wherein the first protection door and the second protection door contact and interfere with each other, and the first protection door and the second protection door move in the same direction. The purpose of the invention is to provide an anti-single-plug protection door for multinational power converters. During normal use, the first protection door and the second protection door can keep moving in the same direction along a straight line, so as to prevent the phenomenon that the safety door is stuck and cannot be reset, so that the first protection door and the second protection door can play a better safety protection role.