Motorized Changeover Switch Structure for Compact High-Current Switching
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Solution Overview
Problem
Existing changeover switches are too large and complex, lacking efficient mechanisms for high current applications, and require costly manufacturing and complex installation.
Innovation Solution
A compact switch design with a motorized moving mechanism, including a rotative kinematic mechanism and gear system, allows quick and efficient switching between multiple contacts, ensuring reliable connections and disconnections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional changeover switch configurations are used, then the switch can provide reliable electrical connection and disconnection, but the switch size becomes too large for compact applications
Solution Approach 1:
The patent combines multiple switch functions into a single integrated changeover switch unit, merging the disconnecting mechanism and changeover contacts into one compact structure. This eliminates the need for separate parallel lead switches, reducing overall volume while maintaining reliable electrical connection and disconnection capabilities through the integrated movable contact and terminal contact arrangement
Solution Approach 2:
The patent reconfigures the switch contacts and moving mechanism in a three-dimensional arrangement within the switch body, utilizing spatial optimization to achieve compact dimensions. The movable contact is positioned to engage with terminal contacts from multiple directions, allowing reliable electrical connection in a reduced volume compared to traditional linear configurations
2Volume of moving object
If compact switch designs are implemented to reduce space, then the switch volume decreases, but the construction becomes more complex
Solution Approach 1:
The moving mechanism in the patent performs multiple functions simultaneously: it provides arc suppression during disconnection, enables changeover between different electrical paths, and maintains reliable contact engagement. This multi-functionality eliminates the need for separate dedicated components for each function, simplifying the overall construction while achieving compact dimensions
Solution Approach 2:
The patent introduces a movable contact as an intermediary element that mediates between the disconnecting mechanism and the terminal contacts. This single intermediary component handles both the breaking and making of electrical connections, as well as the changeover function, reducing the number of separate parts needed and simplifying the internal construction
3Reliability
If high current carrying capacity is ensured, then the switch can support high short circuit currents, but the switch size increases
Solution Approach 1:
The patent optimizes the physical parameters of the terminal contacts and movable contact, including their cross-sectional area, material composition, and contact pressure, to achieve high current carrying capacity in a compact form. By carefully selecting contact materials with high conductivity and appropriate contact geometries, the switch supports high short circuit currents without requiring increased 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 design achieves a compact, reliable, and efficient switch capable of handling high current levels with simple manufacturing and easy installation, suitable for complex electrical systems.
Implementation Method 1
a moving mechanism comprising electrically motorized means
Implementation Method 2
at least two terminal contacts protruding from the switch body, at least one movable contact, which is movable from an operative position, wherein the movable contact is electrically coupled between the at least two terminal contacts
Data Source
Figure 1
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AI summary
The present invention relates to a switch (1) comprising a switch body (2), suitable for containing switch components, at least two terminal contacts (34, 40), protruding from the switch body, at least one movable contact (29), which is movable from an operative position, wherein the movable contact is electrically coupled between the at least two terminal contacts, and a disconnecting position, wherein the movable contact is electrically uncoupled between the at least two terminal contacts. The switch further comprises a moving mechanism (6) comprising motorized means (9) and a support sliding element (21) for the movable contact, driven by the moving mechanism and the motorized means, in order to move the movable contact between the operative position and the disconnecting position.