Circuit Breaker Operating Device for Circuit Isolation
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Solution Overview
Problem
Existing circuit breakers lack a mechanism to isolate the main circuit and detection circuit for maintenance, making inspection and maintenance difficult due to the impossibility of separating these components.
Innovation Solution
A circuit breaker with a circuit operating device that includes a moving unit rotatably coupled between first and second fixed units, allowing connection or isolation between the main and detection circuits, facilitated by a rotating unit, movable terminal, and spring mechanism with a ball guide portion for pressure control, enabling visual confirmation of the connected or isolated state through a display portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the main circuit and detection circuit are integrated without isolation mechanism, then the circuit breaker structure is simple, but maintenance and inspection become difficult
Solution Approach 1:
The circuit breaker is divided into separate main circuit and detection circuit sections with independent access paths. The detection circuit can be accessed and maintained separately from the main circuit through the designed isolation mechanism, allowing technicians to service one circuit without affecting the other.
Solution Approach 2:
The circuit breaker incorporates a dynamic isolation mechanism that can switch between connected and isolated states. This allows the detection circuit to be dynamically separated from the main circuit during maintenance operations, providing flexibility in system configuration and maintenance access.
2Ease of repair
If an isolation mechanism is added to separate main circuit and detection circuit, then maintenance accessibility is improved, but device complexity increases
Solution Approach 1:
A circuit operating device serves as an intermediary component between the main circuit and detection circuit. This device controls the connection and isolation states, providing a centralized control point that simplifies the overall structure while enabling maintenance access.
Solution Approach 2:
The circuit operating device performs multiple functions: it controls circuit connection, provides isolation during maintenance, and enables visual status indication. By consolidating these functions into a single component, the overall device complexity is minimized while achieving multiple objectives.
3Ease of operation
If a rotating moving unit is used to connect or isolate circuits, then circuit state control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The rotating moving unit incorporates a spring mechanism that automatically returns the rotor to its initial position after operation. This self-resetting feature reduces the need for precise manual positioning and compensates for manufacturing tolerances, as the spring force ensures consistent return to the starting state.
Solution Approach 2:
The rotor design incorporates curved surfaces and rounded features that facilitate smooth rotation and reduce sensitivity to minor manufacturing variations. The curved geometry of the moving terminal and contact portions allows for easier engagement and disengagement, reducing the precision requirements for rotational positioning.
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
Enables effective isolation and connection of the main and detection circuits, simplifying maintenance and providing a clear visual indication of the circuit state, thus facilitating easier inspection and operation.
Implementation Method 1
a spring inserted into the accommodating portion, and at least one ball disposed on at least one end of the spring in a manner of facing at least one of the first fixed unit and the second fixed unit
Implementation Method 2
a movable terminal disposed through the rotating unit, to be brought into contact with the first fixed terminal and the second fixed terminal or to be separated from the first fixed terminal and the second fixed terminal according to the rotation of the rotating unit
Data Source
AI summary
A circuit breaker having a circuit operating device according to one embodiment of the present invention includes a circuit unit having a main circuit, a detecting unit having a detection circuit for detecting a fault current in the main circuit, and a circuit operating device configured to allow connection or isolation between the main circuit and the detection circuit, wherein the circuit operating device includes a first fixed unit and a second fixed unit connected to the main circuit and the detection circuit, respectively, and arranged in parallel to each other, and a moving unit rotatably coupled between the first fixed unit and the second fixed unit to connect or isolate the main circuit and the detection circuit to or from each other.