High Voltage Switch with Rotary Actuator and Planar Substrate
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Solution Overview
Problem
Conventional high-voltage switching devices are complex, costly, and unreliable due to their design features that attempt to prevent arc formation, which often require continuous energization and exotic materials, leading to increased complexity and reduced reliability.
Innovation Solution
A simple and reliable high-voltage switch apparatus utilizing a planar substrate with a rotary actuator and non-conductive arm that reconfigures the circuit in an unpowered state, featuring conductive contacts with a breakdown voltage of at least 500V, allowing for selective rotation between positions without the need for continuous energization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional designs use clamping circuits, inert gas compartments, or exotic contact materials to prevent arc formation, then arc prevention is improved, but device complexity and cost increase while reliability decreases
Solution Approach 1:
The patent removes the need for complex arc prevention mechanisms (clamping circuits, inert gas compartments, exotic materials) by extracting the core function to simple mechanical contact separation in air. The design accepts that arcs may form but relies on the inherent properties of air and simple geometry to prevent them from becoming problematic, thereby eliminating unnecessary complexity.
Solution Approach 2:
Instead of trying to prevent arcs through complex active mechanisms, the patent inverts the approach by using passive geometric design - specifically contact shapes with large radii and adequate spacing - to naturally reduce arc formation risk. The system works with rather than against the natural tendency toward arcing.
2Speed
If solenoids with return springs are used to move contacts, then switching speed is improved, but continuous energization is required increasing energy consumption and complexity
Solution Approach 1:
The patent employs periodic or momentary energization of the solenoid only during switching transitions rather than continuous energization. The solenoid is activated briefly to move contacts to the desired position, then de-energized while maintaining position through mechanical means, thereby eliminating continuous energy consumption while preserving switching capability.
3Object-affected harmful factors
If contacts are enclosed in vacuum or inert gas compartments, then arc prevention is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent removes the vacuum or inert gas enclosure entirely, allowing contacts to operate directly in air. This extraction of the protective environment eliminates the complex sealing, pumping, or gas-filling systems required, dramatically simplifying manufacturing while maintaining acceptable arc prevention through geometric design and adequate contact spacing.
Data Source
AI summary
An apparatus for reconfiguring a high-voltage circuit. The apparatus has a planar substrate, a non-conductive arm comprising a first contact and a rotary actuator having a body fixed to the substrate and a rotatable element fixed to the arm. The actuator is configured to selectably rotate the arm between a first position and a second position relative to the substrate. The apparatus also has a second contact fixed to the substrate such that the first contact makes conductive contact with the second contact when the arm is in the first position. The apparatus has a breakdown voltage that is greater than or equal to 500V.