Relay Switch Structure Using Magnetic Intermediary to Prevent Magnetization
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Solution Overview
Problem
Relays using magnetic attraction and repulsion principles face issues such as switch magnetization, deformation, and fatigue due to long-term magnetic influence, leading to incomplete closure.
Innovation Solution
A magnetically operated switch structure with a switch assembly, lower magnetic motion assembly, and upper magnetic motion assembly, utilizing magnetic repulsion or attraction to control the switch's opening and closing through the movement of a movable iron core within a coil set, ensuring minimal magnetic interference and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the switch is subjected to long-term magnetic influence from the magnets, then the magnetic switching function is achieved, but the switch gradually becomes magnetized and loses its ability to be attracted by the magnets
Solution Approach 1:
The patent divides the magnetic system into separate components: upper and lower magnets that do not directly contact the switch, and a magnetic conductor that mediates the magnetic field. This segmentation prevents direct long-term magnetic exposure of the switch to the magnets while maintaining switching functionality.
Solution Approach 2:
The patent introduces a magnetic conductor as an intermediary between the magnets and the switch. The magnetic conductor transmits magnetic force from the magnets to the switch without requiring direct contact, thereby reducing magnetic field exposure and preventing switch magnetization while maintaining effective magnetic actuation.
2Reliability
If the switch is subjected to long-term magnetic attraction by the magnets, then the switching operation is achieved, but both ends of the switch become deformed due to fatigue in the metal parts
Solution Approach 1:
The patent separates the magnetic field generation function (magnets) from the switching function (switch), using a magnetic conductor as an intermediate transmission element. This reduces the mechanical and magnetic stress concentration on the switch ends, preventing deformation and fatigue.
Solution Approach 2:
The magnetic conductor serves as a mediator that distributes and transmits magnetic force more evenly, reducing peak stresses on the switch structure. This intermediary element protects the switch from direct intense magnetic attraction that would cause end deformation and metal fatigue.
3Reliability
If the switch is made of metal for conductivity, then electrical switching is achieved, but the metal switch becomes magnetized under prolonged magnetic influence
Solution Approach 1:
The magnetic conductor acts as an intermediary that transmits magnetic force to the metal switch without requiring the switch to be directly exposed to strong magnetic fields from the magnets. This reduces the magnetic susceptibility issue while maintaining the metal switch's electrical conductivity for effective switching.
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 prevents switch magnetization and deformation, ensuring reliable and efficient switching operations by varying magnetic forces without prolonged exposure to magnetic fields, enhancing relay performance and production yield.
Implementation Method 1
uses the principle of magnetic attraction and repulsion of dual magnets to switch
Implementation Method 2
causes a variation in a magnetic force between the upper magnetic motion assembly and the lower magnetic motion assembly
Data Source
AI summary
The present invention relates to a magnetically operated switch structure for a relay. The magnetically operated switch structure is installed inside the delay and adjacent to a coil set, into which a movable iron core is inserted, and comprises: a switch assembly, a lower magnetic motion assembly and an upper magnetic motion assembly. By operation between powered and unpowered states of the coil set, the movable iron core is driven to move up and down, causing displacement of the upper magnetic motion assembly. This displacement changes the distance between the upper and lower magnetic motion assemblies and causes a variation in a magnetic force between the upper and lower magnetic motion assemblies, thereby controlling opening and closing of the switch assembly. This eliminates excessive mechanical mechanisms, saving costs for manufacturers, and making production, maintenance, and repair processes easier and simpler.