Circuit Breaker Handle Stabilization via Adjustable Spring
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Solution Overview
Problem
Circuit breakers face challenges in maintaining the handle's position stability during ON/OFF operations due to the elastic force of the spring, which makes it difficult to operate the handle to the OFF position and complicates the installation process.
Innovation Solution
An apparatus with a handle operating member that includes an elastic member to provide rotational force to the second link, allowing the handle to be stably fixed in ON or OFF positions, featuring a body part, rotary member, and fixing member to receive and apply elastic force, ensuring smooth operation and convenient installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a spring is installed to fix the handle position, then the handle position stability is improved, but the ease of operation deteriorates because the elastic force makes it difficult to operate the handle to the OFF position
Solution Approach 1:
The patent applies the dynamics principle by making the spring's elastic force adjustable rather than fixed. The spring pressure adjusting mechanism allows the elastic force to be dynamically changed to match different operating conditions, enabling the spring to provide sufficient stabilizing force while still allowing the handle to be operated easily to the OFF position when needed.
Solution Approach 2:
The patent implements parameter changes by providing multiple adjustable parameters for the spring mechanism, including spring pressure adjustment and selectable spring strengths. This allows the elastic force parameter to be optimized for different scenarios, resolving the contradiction between needing strong enough force for stability and weak enough force for easy operation.
2Stability of the object's composition
If a spring is installed to fix the handle position, then the handle position stability is improved, but the device complexity increases due to complicated installation requirements
Solution Approach 1:
The patent applies segmentation by dividing the spring mechanism into modular components: the spring itself, the pressure adjusting mechanism, and the mounting structure. This modular segmentation allows each component to be independently installed and adjusted, significantly reducing the overall installation complexity while maintaining position stability.
Solution Approach 2:
The patent implements self-service through the automatic adjustment mechanism that allows the spring pressure to be adjusted without disassembling the entire device. The pressure adjusting mechanism enables operators to self-adjust the spring force to optimal levels, eliminating the need for complex professional installation procedures.
3Stability of the object's composition
If the spring elastic force is increased to maintain handle position, then the handle position stability is improved, but the ease of operation worsens as it becomes more difficult to move the handle
Solution Approach 1:
The patent resolves this contradiction by making the spring's elastic force dynamic rather than static. The pressure adjusting mechanism allows the elastic force to be adapted in real-time to match the specific operational requirements, enabling strong stabilizing force during normal operation while allowing easy handle movement when switching positions is needed.
Solution Approach 2:
The patent applies preliminary anti-action by providing an adjustment mechanism that counteracts the excessive elastic force before it becomes a problem. The pressure adjusting mechanism allows pre-setting of the spring force to the optimal level, preventing the elastic force from becoming too strong and making handle operation difficult, while still providing sufficient force for position stability.
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 apparatus ensures the handle is stably maintained in ON or OFF positions without sagging, enhancing operational ease and simplifying the installation process by providing consistent rotational force in the same direction as the handle's movement.
Implementation Method 1
having an elastic member to provide elastic force to the second link, while being rotated cooperatively according to rotation of the second link
Data Source
AI summary
An apparatus for remotely operating a handle of a circuit breaker which includes a handle, a first plate, to which the handle is rotatably connected, allowing the handle to be attached to a distributing board, a second plate allowing the first plate to be attached to the distributing board, a first link transferring a rotary motion of the handle, as a linear motion, and a second link rotated according to the linear motion of the first link to provide rotational force enabling the circuit breaker to be switched on or off, includes a handle operating member connected to the second link, having an elastic member to provide elastic force to the second link, while being rotated cooperatively according to rotation of the second link, to fixedly support an ON or OFF position of the handle.