Integrated Locking Member in Plug-In Circuit Breakers
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Solution Overview
Problem
Traditional plug-in circuit breakers for 5G communication equipment face challenges in miniaturization, safety, and complexity due to multiple independent locking mechanisms required for preventing energized operations, leading to increased parts, space occupation, and potential misoperation hazards.
Innovation Solution
A plug-in circuit breaker design featuring a single locking member with a rotating locking protrusion and driving surface, integrated with the opening and closing button, which prevents closure when not installed correctly and locks the breaker in place to prevent unauthorized removal, simplifying the structure and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple independent locking mechanisms are configured to prevent energized operations, then safety is improved, but device complexity and space occupation increase
Solution Approach 1:
The patent combines multiple locking functions into a single integrated locking mechanism. The locking component works together with the opening and closing button to provide multiple safety functions: preventing closure before insertion, preventing pulling out during insertion, and preventing misoperation. This merging approach maintains safety while reducing the number of parts and simplifying the overall structure.
Solution Approach 2:
The locking mechanism is designed to perform multiple functions simultaneously. The same locking component and button assembly provide several protection functions against different types of energized operations, making the locking mechanism universal rather than requiring separate specialized mechanisms for each safety function.
2Reliability
If multiple independent locking mechanisms are configured to prevent energized operations, then safety is improved, but the number of parts and space occupation increase
Solution Approach 1:
The patent merges multiple locking functions into a single integrated locking mechanism that works with the opening and closing button. This eliminates the need for multiple separate locking mechanisms, reducing the number of parts while maintaining comprehensive safety protection against various energized operation risks.
3Reliability
If a locking mechanism is provided to prevent pulling out in closing state, then safety is improved, but the structure becomes more complex
Solution Approach 1:
The patent integrates the function of preventing pulling out in closing state into the same locking mechanism that prevents closure before insertion. The locking component and button assembly work together to provide both protection functions without requiring separate transmission mechanisms, thereby simplifying the overall transmission fit.
4Reliability
If multiple sets of independent locking apparatuses are arranged in parallel, then comprehensive safety protection is achieved, but ease of operation deteriorates due to potential misoperation
Solution Approach 1:
The patent combines multiple safety functions into a single integrated locking mechanism that operates through one button assembly. This unified approach provides comprehensive safety protection while maintaining operational simplicity, eliminating the risk of misoperation that could arise from multiple independent locking apparatuses.
Data Source
AI summary
A plug-in circuit breaker that includes a circuit breaker housing with a limiting hole and a opening and closing button. The circuit breaker further includes a locking member rotatably arranged inside the circuit breaker housing with an upper portion close to the limiting hole provided with a locking protrusion fitting. A lower portion of the circuit breaker housing is provided with a locking driving surface fitting with the opening and closing button. When the limiting hole is not shielded, the opening and closing button jacks up the locking driving surface to enable the locking protrusion to extend out of the limiting hole. The plug-in circuit breaker is closed when the limiting hole is shielded, so that the locking protrusion cannot extend out of the limiting hole. The locking driving surface limits the opening and closing button, so that the opening and closing button cannot press to the destined position.