DC Circuit Breaker Controller Isolation Mechanism
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Solution Overview
Problem
Conventional isolation mechanisms for DC circuit breakers require complex components and significant rotational movement, necessitating the use of tools for operation and complicating the manipulation of connecting and disconnecting from an electric power source.
Innovation Solution
A simplified isolation mechanism comprising a first connector with output terminals and a second connector that rotates 180° to connect or disconnect the output terminals from input terminals, utilizing conductor wiring portions and printed circuit boards to facilitate electric connection and disconnection, along with a supporting frame for secure assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional isolation mechanism with threaded shaft and support nut is used, then the controller can be electrically isolated from terminals, but the structure becomes complicated and requires tool manipulation
Solution Approach 1:
The patent extracts the threading mechanism (threaded shaft and support nut) from the isolation mechanism, removing the complex rotational operation. Instead, it uses a simple linear movable contact that slides along a guide rail to achieve electrical connection and isolation, eliminating the need for tools while maintaining reliable electrical isolation.
Solution Approach 2:
The patent segments the isolation mechanism into distinct functional components: a stationary contact fixed to the terminal, a movable contact that slides to make/break connection, and a guide rail that constrains the movable contact's motion. This segmentation allows each component to perform its specific function simply, avoiding the need for complex integrated mechanisms like threaded shafts.
2Reliability
If a conventional isolation mechanism with threaded shaft is used, then electrical connection can be established, but significant rotational movement is required and operation becomes complicated
Solution Approach 1:
The patent replaces the rotational mechanical system (threaded shaft requiring screwdriver operation) with a linear sliding mechanical system (movable contact on guide rail). This substitution reduces the degree of freedom from rotational movement to simple linear motion, making operation easier and eliminating tool requirements while maintaining reliable electrical connection.
Solution Approach 2:
Instead of using a movable threaded shaft that rotates to move contacts, the patent inverts the approach by making the contact itself movable along a fixed guide rail. This inversion simplifies the operation from complex rotational threading to simple linear sliding, improving ease of operation while achieving the same electrical connection function.
Data Source
AI summary
The present invention relates to an isolation mechanism of a controller for a direct current circuit breaker, which has a simple structure for isolation and connection manipulation. The isolation mechanism of a controller for a circuit breaker comprises a first connector that has a plurality of output terminals electrically connected to the controller and a plurality of input terminals detached from the output terminals for connecting an input electric power source; and a second connector that has a first connection position connected to the first connector and a second connection position rotated at 180° from the first connection position and connected to the first connector, and has a conductor wiring portion electrically connecting the output terminals with the input terminals at the first connection position and electrically disconnecting the output terminals from the input terminals at the second connection position.