Rotating Switchboard Shutter Structure for Compact Insulation
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Solution Overview
Problem
Conventional switchboards face challenges in miniaturization due to the need for maintaining a sufficient insulating distance between electrical conductors and shutter plates, which results in increased vertical dimensions and hindered compact design.
Innovation Solution
A pivotable shutter structure with a shutter plate and support members that pivot along an inner side of the switchboard, reducing the vertical movement distance and maintaining a predefined insulating distance, achieved through a hinge-connected mechanism and actuator-driven pivoting motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shutter plate moves vertically to maintain insulating distance, then electrical insulation is ensured, but the vertical dimension of the switchboard increases
Solution Approach 1:
The shutter plate movement is changed from purely vertical translation to pivoting motion along an arc path. The support members connect the shutter plate to the circuit breaker, allowing the shutter plate to rotate about a pivot point rather than move linearly. This dimensional change in motion trajectory enables the shutter plate to maintain adequate insulating distance from electrical conductors while reducing the overall vertical space required in the switchboard.
Solution Approach 2:
The shutter plate assembly is made dynamically adjustable through the pivoting mechanism. As the circuit breaker moves between inserted and withdrawn positions, the shutter plate automatically pivots to different angular positions, dynamically maintaining the insulating distance requirement without requiring excessive vertical clearance. The mechanism adapts its configuration based on the operational state of the circuit breaker.
2Volume of stationary object
If the shutter assembly is made compact, then miniaturization is achieved, but the insulating distance may be compromised
Solution Approach 1:
By changing the shutter plate motion from linear vertical movement to rotational pivoting, the system achieves compact vertical dimensions while preserving insulating distance through angular positioning. The arc-shaped travel path of the shutter plate allows it to remain close to the electrical conductors when needed while maintaining safe clearance through the pivoting geometry.
Solution Approach 2:
The shutter assembly is divided into the shutter plate and separate support members that provide the pivoting connection. This segmentation allows the support members to act as articulated arms that can adjust the position of the shutter plate relative to the electrical conductors, maintaining insulating distance while enabling compact overall dimensions.
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 pivotable shutter structure reduces the vertical dimension of the switchboard while ensuring a secure insulating distance, enabling miniaturization without compromising safety and electrical insulation.
Implementation Method 1
a pair of support members respectively extending from both opposing ends of the shutter plate and along the inner space of the switchboard, a distal end of each of the pair of support members being hinge-connected to each of both opposing sides of the switchboard body
Data Source
AI summary
A switchboard is provided having a rotating shutter structure that comprises: a switchboard body that is provided with a circuit breaker chamber into which a circuit breaker is inserted, and an open hole formed in the rear surface to expose a conductor part of a bushing assembly to the circuit breaker chamber; a shutter part that is rotatably installed in the switchboard body and opens/closes the open hole by rotating; and an operation unit that is installed in the switchboard body and rotates the shutter part when the circuit breaker is inserted into the circuit breaker chamber.