Leakage Current Protection Plug Integrally Formed Contact Arms
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Solution Overview
Problem
Conventional leakage current protection plugs have unreliable detector coils due to poor fixation, complex internal wiring leading to increased temperature and manufacturing difficulties, and large size, which compromises reliability and efficiency.
Innovation Solution
A leakage current protection plug design that securely fixes detector coils, reduces internal transfers and solder points, and optimizes component layout to minimize size and cost, featuring integrally formed output moving contact arms directly connected to output conductor wires and a simplified internal structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional leakage current protection plugs use transfer wires between moving contact terminals and output wires, then electrical connections can be established, but the number of transfers and solder points increases, causing internal temperature to rise and reliability to decrease
Solution Approach 1:
The patent merges the moving contact terminal and output wire into a single integrally formed output moving contact arm. This eliminates the need for transfer wires and intermediate solder connections, directly resolving the technical contradiction by reducing wiring complexity while improving reliability through fewer connection points.
Solution Approach 2:
The patent extracts and eliminates the unnecessary transfer wires from the internal wiring structure. By removing these intermediate components, the design achieves direct connection between the moving contact terminal and output conductor wires, thereby reducing the number of solder points and improving reliability.
2Temperature
If conventional leakage current protection plugs use multiple transfer wires and solder points, then electrical connections can be made, but internal temperature rises due to increased resistance and connection points
Solution Approach 1:
The output moving contact arm is designed as an integral component that combines the moving contact terminal and output wire into one piece. This eliminates multiple solder joints and transfer connections, reducing internal resistance and heat generation while simultaneously simplifying the manufacturing process.
3Ease of manufacture
If conventional leakage current protection plugs have complex internal wiring with multiple transfers, then electrical connections are established, but the number of solder points increases making manufacturing difficult
Solution Approach 1:
The patent integrates the moving contact terminal and output wire into a single integrally formed output moving contact arm. This merging of components dramatically reduces the number of solder points and transfers required, making manufacturing easier while simultaneously reducing device complexity.
4Area of stationary object
If conventional leakage current protection plugs have large size, then all components can be accommodated, but space utilization of outlet is reduced and cost increases
Solution Approach 1:
The integral design of the output moving contact arm eliminates the need for separate transfer wires and reduces the number of components required. This consolidation of functions into fewer components enables more compact internal layout, reducing the overall plug volume and improving outlet space utilization.
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
Improves the accuracy of leakage current detection, enhances reliability, reduces internal temperature, and decreases the plug's size and production costs while maintaining safety features like automatic shield line detection.
Implementation Method 1
the detector coil inside the leakage current protection plugs
Implementation Method 2
the trip assembly includes a trip coil frame
Data Source
AI summary
A leakage current protection plug includes a body formed by a top cover and a base, a moving assembly disposed in the body, and output wires. The moving assembly includes a control circuit board, and a detector assembly and a trip assembly disposed on the control circuit board, wherein power input insertion plates and power output moving contact arms are assembled with the moving assembly. Each output moving contact arm is formed integrally and fixed to the detector assembly, and the output ends of the output moving contact arms are directly connected to the output conductor wires. The device has a simple overall structure and can be reliably assembled. By using integrally formed output moving contact arms to directly couple the input and output, it improves the accuracy of the leakage current detection parameters, reduces internal transfers and solder points, and reduces the size and cost of the plug.