Magnetic Switch External Magnet Holder Design
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Solution Overview
Problem
Magnetic switches for electric vehicles have a complex assembly process due to multiple permanent magnet holders, which increases the number of components and complicates maintenance, leading to potential damage during disassembly.
Innovation Solution
A magnetic switch design featuring a permanent magnet positioned outside the upper frame with a single externally fitted U-shaped permanent magnet holder, simplifying assembly and removal by reducing the number of components and eliminating the need for intricate disassembly tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two permanent magnet holders are pushed and installed into the upper frame in a symmetric manner, then the permanent magnets can be fixed within the upper frame, but the number of components increases and the assembly and maintenance complexity deteriorates
Solution Approach 1:
The patent merges two separate permanent magnet holders into a single integrated holder that supports both permanent magnets. This single holder is installed in one piece into the upper frame, reducing the total number of components while maintaining the functionality of fixing both permanent magnets securely.
2Reliability
If two permanent magnet holders are pushed and installed into the upper frame, then the permanent magnets are fixed, but the disassembly performance deteriorates and surrounding parts may be damaged
Solution Approach 1:
The patent segments the permanent magnet holder from the upper frame, allowing the holder to be removed as a separate component. The holder includes engagement portions that detachably engage with the upper frame, enabling easy removal of the permanent magnets without damaging surrounding parts during maintenance.
3Ease of operation
If a single externally fitted permanent magnet holder is used, then assembly and maintenance are simplified, but the permanent magnets must be positioned outside the upper frame
Solution Approach 1:
The patent transitions the permanent magnet positioning from an internal arrangement (within the upper frame) to an external arrangement (on the outer surface). This dimensional change allows for simplified assembly and maintenance while achieving the same functional effect through the external positioning of magnets.
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 design facilitates easier assembly and maintenance while reducing the risk of damaging surrounding components, and lowers manufacturing costs by simplifying the component structure.
Implementation Method 1
A magnetic field (B) generated from the permanent magnet 6a, 6b interacts with a current (+l, -l) to generate a force (+F, -F) of pushing an arc occurring during the switching to an outside
Data Source
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AI summary
The present invention relates to a magnetic switch, and more particularly, to a magnetic switch provided with a permanent magnet disposed at an outside of an upper frame and an externally fitted permanent magnet holder to reduce a number of components and facilitate maintenance. A magnetic switch according to an embodiment of the present disclosure may include an upper frame formed in a box shape on which a lower surface thereof is open; a pair of fixed contacts installed in a fixed manner within the upper frame; a movable contact brought into contact with or separated from the pair of fixed contacts to conduct or block a circuit; a pair of permanent magnets disposed on part of the upper frame; and a permanent magnet holder coupled to part of the upper frame to fix the pair of permanent magnets to the upper frame, wherein a first and a second mounting portion are provided at outer sides on a front and a rear surface of the upper frame, respectively, to place the pair of permanent magnets into the first and the second mounting portion, and the permanent magnet holder is formed in a U-shape and coupled to an upper portion of the upper frame to fix the pair of permanent magnets to an outside of the upper frame.