Current Switch Integrating Permanent Magnets Within Energizing Contacts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing current switch designs with auxiliary fixed electrodes and permanent magnets as separate parts result in increased complexity and dimensions, which hinders efficient current switching performance and compactness.
Innovation Solution
Integrating permanent magnets within the energizing contacts of the current switch, arranged to generate a magnetic flux perpendicular to the arc, allowing for improved arc driving and extinction, thereby enhancing switching performance while reducing the switch's dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If auxiliary fixed electrode and permanent magnet are arranged as separate parts adjacent to main fixed electrode, then arc driving and extinction function is achieved, but device complexity and dimensions increase
Solution Approach 1:
The patent combines the auxiliary fixed electrode and permanent magnet into a single integrated component structure. The permanent magnet is positioned within the housing adjacent to the main fixed electrode, while the auxiliary fixed electrode is formed as part of the same assembly, eliminating the need for separate mounting of these components and reducing overall device complexity while maintaining arc driving and extinction functionality
2Reliability
If auxiliary fixed electrode and permanent magnet are arranged as separate parts, then arc driving function is achieved, but switch dimensions increase
Solution Approach 1:
The permanent magnet is nested within the housing structure adjacent to the main fixed electrode, and the auxiliary fixed electrode is integrated into the same spatial arrangement. This nesting approach allows multiple functional components to occupy overlapping or adjacent spaces efficiently, reducing the overall volume of the switch while ensuring the magnetic field and electric field work together for effective arc driving and extinction
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 effectively improves current switching performance by driving and extinguishing arcs within the switch, reducing the overall dimensions and preventing arc movement to adjacent contacts, thus minimizing wear and energy loss.
Implementation Method 1
a permanent magnet arranged within the energizing contacts and arranged such that a magnetic flux generated by the permanent magnet is perpendicular to an arc
Data Source
Figure 1(a)~1(c)
Figure 2
Figure 3(a)~3(c)
AI summary
A current switch includes a blade-shaped movable contact (26) that extends in a radial direction from a rotation center, and that reciprocates such that a free end of the movable contact (26) draws a rotation locus, a fixed contact (20) that includes a plurality of pairs of energizing contacts (31) that come into and out of contact with the movable contact (26), a movable arcing contact (1) that is provided on the movable contact (26), fixed arcing contacts (2) that are provided on a pair of energizing contacts (31a), and a pair of permanent magnets (6a, 6b) that are arranged within the pair of energizing contacts (31a) adjacent to the fixed arcing contacts (2).