Disconnector Blade Spring Assembly With Integrated Push Rod Balancing
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Solution Overview
Problem
Conventional balance spring assemblies for disconnectors require multiple sets of springs and additional components for protection, leading to complex assembly processes, increased costs, and reduced reliability due to limited functionality during blade rotation.
Innovation Solution
A balance spring assembly is integrated into the blade of the disconnector, featuring a push rod and a single spring that compresses and decompresses as the blade rotates, eliminating the need for additional components and enhancing assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional balance spring assembly uses two sets of springs with additional protective components, then the springs are protected from erosion, but the assembly process becomes time-consuming and costly
Solution Approach 1:
The patent merges the protective function and spring function into a single integrated balance spring assembly. The balance spring itself is designed to be resistant to erosion, eliminating the need for separate protective tubes and auxiliary components. This integration reduces the number of parts and simplifies the assembly process while maintaining protection reliability.
Solution Approach 2:
The balance spring is designed to serve multiple functions simultaneously: it provides the balancing force, resists erosion through its material properties, and eliminates the need for separate protective structures. This multi-functionality reduces overall device complexity while maintaining all necessary functions.
2Reliability
If conventional balance spring assembly uses additional protective components, then the springs are protected from erosion, but manufacturing and assembly costs increase
Solution Approach 1:
The protective function is merged into the balance spring itself through material selection and design. The balance spring is made from erosion-resistant material that inherently protects itself, eliminating the need for separate protective components and reducing manufacturing costs.
Solution Approach 2:
The patent extracts the protective function from separate components and integrates it into the balance spring's material properties and design, removing unnecessary parts and reducing overall manufacturing complexity and cost.
3Device complexity
If balance spring assembly is positioned conventionally relative to the blade, then the structure is simple, but the spring cannot fully perform its intended role during blade rotation
Solution Approach 1:
The balance spring assembly is designed with dynamic positioning that allows it to fully engage throughout the blade's rotation range. The spring's location and orientation are optimized to maintain constant effectiveness during operation, ensuring reliable balancing force is applied at all positions.
Solution Approach 2:
The spring assembly is positioned at a specific location on the blade where it can maximize its balancing effect. The local geometry and positioning are optimized to ensure the spring's force is most effective during the critical phases of blade rotation, improving overall functionality.
4Device complexity
If a single spring is used in the blade, then manufacturing and assembly costs are reduced, but the spring may not provide sufficient protection from erosion
Solution Approach 1:
The balance spring is made from specialized erosion-resistant material with modified physical and chemical parameters. This material selection changes the spring's properties to inherently resist erosion without requiring additional protective components, maintaining simplicity while providing protection.
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
This arrangement reduces manufacturing and assembly costs, improves the reliability of the balance spring assembly by allowing it to function throughout the blade's rotation, and minimizes the impact on the fixed contact.
Implementation Method 1
a spring arranged in the blade and around the push rod, the spring held between a second end of the push rod and an end of the blade adjacent to the first shaft
Implementation Method 2
the spring can fully work during the whole process when the blade is rotated from the open position to the close position
Data Source
AI summary
A balance spring assembly for a disconnector comprises a push rod partially and coaxially arranged in a blade of the disconnector which is rotatable about a first shaft to change an operation status of the disconnector, a first end of the push rod fixed to a second shaft so that the push rod is rotatable about the second shaft; and a spring arranged in the blade and around the push rod, the spring held between a second end of the push rod and an end of the blade adjacent to the first shaft, wherein the second shaft is arranged parallel to the first shaft to enable the push rod to axially move in the blade with a rotation of the blade to thereby compress or decompress the spring. By arranging the balance spring assembly at least in part in the blade of the disconnector, only one set of the springs is needed.