Rotary Isolation Switch Energy Storage Structure
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Solution Overview
Problem
Existing rotary isolation switches with remote tripping functions face issues such as asynchronous energy storage and switching operations, leading to potential safety hazards and complex, cumbersome structures. Additionally, the friction between the spring and operating shaft causes wear and power attenuation, resulting in abnormal switch states.
Innovation Solution
The proposed energy storage structure includes an operating shaft, a delayed energy storage mechanism, and a locking mechanism. The delayed energy storage mechanism comprises a first energy storage spring and a turntable, where the turntable rotates between an energy release position and an energy storage position, and the locking mechanism ensures the turntable remains at the energy storage position until unlocked. This design allows energy storage to be completed synchronously with the closing operation of the operating shaft, preventing failure of remote opening control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a delayed energy storage mechanism is provided to achieve remote tripping function, then the remote tripping function is achieved, but the energy storage process and switch closing operation cannot be carried out synchronously, leading to potential safety hazards
Solution Approach 1:
The patent applies preliminary action by designing the turntable to rotate and complete energy storage of the spring before the operating shaft completes its closing operation. The turntable is driven by the operating shaft during its rotation, and the spring is pre-charged during this process. The locking mechanism then locks the turntable at the energy storage position, ensuring energy is ready before the switch closes, eliminating the timing delay between energy storage and closing operation.
2Reliability
If a delayed energy storage mechanism is provided to achieve remote tripping function, then the remote tripping function is achieved, but the structure becomes complex and cumbersome to install
Solution Approach 1:
The patent merges the energy storage mechanism with the existing operating shaft and turntable components of the isolation switch. The turntable, which already exists for switching operations, is dual-purpose: it drives the spring for energy storage while also performing its original switching function. The locking mechanism integrates with these existing components, combining multiple functions into a unified structure that reduces overall complexity compared to adding a completely separate energy storage system.
Solution Approach 2:
The turntable serves multiple functions: it performs the original switching operation by rotating the operating shaft, simultaneously drives the spring for energy storage through its rotation, and its position is locked by the locking mechanism to maintain the charged state. This multi-functionality eliminates the need for separate dedicated components for each function, simplifying the overall structure.
3Volume of stationary object
If the spring of the delayed energy storage mechanism is sleeved on the operating shaft and in contact with it, then the energy storage mechanism is compact, but parts are easily worn and power attenuation occurs due to friction
Solution Approach 1:
The patent introduces a bushing as an intermediary component between the spring and the operating shaft. The bushing is rotatably connected to the operating shaft, and the spring is sleeved on the bushing rather than directly on the shaft. This intermediary bushing reduces direct contact and friction between the spring and the operating shaft, minimizing wear and power attenuation while maintaining the compact structure. The bushing acts as a mediator that protects the critical operating shaft from direct frictional contact.
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 solution ensures reliable and stable remote opening control by completing energy storage before or during the closing operation, avoiding potential safety hazards and simplifying the structure for easier installation and operation. The design also reduces wear and friction, enhancing the longevity and performance of the rotary isolation switch.
Implementation Method 1
the delayed energy storage mechanism comprises a first energy storage spring and a turntable; the operating shaft rotates between an opening position and a closing position, the turntable rotates between an energy release position and an energy storage position
Data Source
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AI summary
The present invention relates to the field of low-voltage electrical appliances, in particular to an energy storage structure and a rotary isolation switch including the energy storage structure. The energy storage structure includes an operating shaft which rotates between a closing position and an opening position, a delayed energy storage mechanism and a locking mechanism, wherein the delayed energy storage mechanism includes a first energy storage spring and a turntable which is in driving fit with the operating shaft and rotates between an energy release position and an energy storage position; the locking mechanism is used for locking the turntable at the energy storage position; when the operating shaft rotates from the opening position to the closing position, the turntable rotates from the energy release position to the energy storage position with the rotation of the operating shaft, and drives the first energy storage spring to store energy at the same time; the turntable is coaxially arranged with the operating shaft; and when or before the operating shaft arrives at the closing position, the turntable arrives at the energy storage position. The energy storage structure and the rotary isolation switch both have a reliable and stable remote opening control function.