Sequential Switching Device with Surrounding Heterogeneous Joint Points
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Solution Overview
Problem
Conventional switching devices with heterogeneous joint points have unstable engagement and larger occupied space due to parallel arrangement of conductive reeds, leading to reduced service life and increased voltage drop and thermal loss.
Innovation Solution
A sequential switching device with a surrounding heterogeneous joint points structure, where a middle conductive joint point with higher arc wearing resistance is initially engaged and then connected in parallel with an external conductive joint point of lower resistance for stable engagement, and vice versa during disengagement, to reduce voltage drop and thermal loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two heterogeneous joint points are assembled with individual conductive reed and arranged in a parallel structure, then the switching device can perform sequential ON/OFF operations, but the occupied space is larger and the engagement of joint points is not stable
Solution Approach 1:
The patent combines two previously separate conductive reeds into a single integrated conductive reed structure. This merged structure contains both the first conductive reed and the second conductive reed, allowing sequential ON/OFF operations while reducing the overall occupied space. The integration eliminates the need for separate reed assemblies and reduces structural complexity.
Solution Approach 2:
The patent implements a nested structure where the first conductive reed and second conductive reed are arranged concentrically within the same radial space. The first conductive reed is positioned closer to the center while the second conductive reed is positioned farther from the center, both sharing the same rotational axis. This nesting approach allows both reeds to occupy the same radial envelope, significantly reducing the occupied space while maintaining sequential operation capability.
2Ease of operation
If two heterogeneous joint points are assembled with individual conductive reed and arranged in a parallel structure, then the switching device can perform sequential ON/OFF operations, but the engagement of joint points is not stable
Solution Approach 1:
The patent combines two previously separate conductive reeds into a single integrated conductive reed structure. This merged structure contains both the first conductive reed and the second conductive reed, allowing sequential ON/OFF operations while reducing the overall occupied space. The integration eliminates the need for separate reed assemblies and reduces structural complexity.
Solution Approach 2:
The patent designs the conductive reeds with different arc wearing resistance properties, causing them to engage and disengage in a predetermined sequential order. The first conductive reed (with higher arc wearing resistance) engages first during ON operation, followed by the second conductive reed (with lower arc wearing resistance). During OFF operation, the second reed disengages first, followed by the first reed. This preliminary design of differential properties ensures stable and reliable sequential engagement without requiring complex control mechanisms.
3Productivity
If conventional parallel arrangement of conductive reeds is used, then the switching device can operate, but the voltage drop and thermal loss of joint point are increased
Solution Approach 1:
The patent designs the conductive reeds with different arc wearing resistance properties, causing them to engage and disengage in a predetermined sequential order. The first conductive reed (with higher arc wearing resistance) engages first during ON operation, followed by the second conductive reed (with lower arc wearing resistance). During OFF operation, the second reed disengages first, followed by the first reed. This preliminary design of differential properties ensures stable and reliable sequential engagement without requiring complex control mechanisms.
Solution Approach 2:
The patent changes the physical parameters of the conductive reeds, specifically the arc wearing resistance, to create functional differentiation. The first conductive reed is designed with higher arc wearing resistance while the second conductive reed has lower arc wearing resistance. This parameter change enables sequential engagement behavior and optimizes the electrical performance by reducing voltage drop and thermal loss through the heterogeneous joint point structure.
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 enhances engagement stability and prolongs the service life of joint points by generating a time delay during ON/OFF operations, reducing voltage drop and thermal loss while maintaining stable engagement.
Implementation Method 1
the middle conductive joint point having higher arc wearing resistance is firstly subject to the arc generated during the electric engagement
Implementation Method 2
the voltage drop and thermal loss of joint points can be reduced
Data Source
AI summary
The present invention is an innovation about a sequential switching device with surrounding heterogeneous joint points structure, in which the exterior of a middle conductive joint point is surrounded by a heterogeneous external joint point structure, so that a time delay is generated between the two joint points during the sequential OF/OFF operations, so the service life of joint points of a mechanical joint point switch can be prolonged, and the voltage drop and thermal loss of joint point are reduced, especially characterized in that the engagement and stability of joint points are enhanced.