Switch Break Mechanism With Telescopic Handle Reset After Tripping
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Solution Overview
Problem
Traditional solid-state circuit breakers with mechanical break modules have three stable states, leading to user operation inconvenience after tripping, as the rotary handle remains in the closed position, requiring manual reset.
Innovation Solution
A break mechanism for a switching apparatus that includes a contact driving assembly, a handle assembly with a telescopic driving part, and an auxiliary assembly, allowing the handle assembly to return to the open position after tripping, thus reducing stable states to two.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical break module with three stable states is used, then reliable electrical isolation is provided, but user operation inconvenience occurs as the rotary handle remains in the closed position after tripping
Solution Approach 1:
The patent applies the dynamics principle by making the telescopic driving part dynamically adjustable in length. During rotation in the first direction, it keeps length unchanged to drive the contact driving assembly; during rotation in the second direction, it retracts to avoid the driven part, enabling the handle assembly to automatically return to the open position after tripping while maintaining reliable electrical isolation
Solution Approach 2:
The telescopic driving part acts as an intermediary mechanism between the handle assembly and the contact driving assembly. It transfers rotational motion from the handle assembly to the contact driving assembly during closing operation, and selectively disengages during tripping operation, enabling automatic handle reset without compromising the mechanical break function
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 break mechanism simplifies user operations by allowing a single action for opening or closing, reduces the risk of mis-operation, and enhances the reliability and user experience of the switching apparatus through improved free tripping functionality.
Implementation Method 1
a torsion spring adapted to provide an elastic force to allow the contact driving assembly to rotate in the first rotation direction
Implementation Method 2
an electromagnetic driving component comprising a push rod which is operable to push the auxiliary assembly to move to the second position in the first moving direction when tripping
Data Source
AI summary
Embodiments of the present disclosure provides a break mechanism for a switching apparatus and a switching apparatus. The break mechanism comprises a contact driving assembly, comprising a driven part and coupled to a moving contact to drive the moving contact to move between an open position and a closed position; a handle assembly adapted to rotate around a pivot shaft and comprising a relevant driving part and a telescopic driving part which is telescopic, the telescopic driving part keeping a length unchanged during a rotation of the handle assembly in a first rotation direction to drive the contact driving assembly to rotate in a second rotation direction, thereby driving the moving contact to move to the closed position, and the telescopic driving part adapted to retract during a rotation of the handle assembly in the second rotation direction to avoid the driven part; and an auxiliary assembly coupled to the relevant driving part, and adapted to move to a second position in a first movement direction during tripping of the switching apparatus, thereby causing the handle assembly to rotate in the second rotation direction. The break mechanism is easy to operate and difficult to mis-operate, and can better support the free tripping function.