Polarized Relay Gap Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional remote control relays with electromagnetic devices face instability in driving operations due to variations in dimensional accuracy of metallic components, leading to fluctuations in suction force and potential malfunctions.
Innovation Solution
A remote control relay design incorporating a polarized electromagnet with a pair of armatures, a yoke, permanent magnets, an auxiliary yoke, and a gap maintaining portion, which maintains a predetermined gap between the armatures and the auxiliary yoke, stabilizing the driving operation with a simple configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electromagnetic devices are used without gap maintaining portions, then the configuration remains simple, but the suction force fluctuates due to dimensional variations in metallic components
Solution Approach 1:
A nonmagnetic plate is introduced as an intermediary component between the armature and the auxiliary yoke. This plate serves as a mediator that maintains a predetermined gap without being affected by magnetic forces, thereby stabilizing the suction force while keeping the overall configuration relatively simple.
Solution Approach 2:
The gap between the armature and the auxiliary yoke is changed from a variable parameter (affected by dimensional variations) to a fixed parameter (maintained at a predetermined value). This is achieved by introducing the gap maintaining portion that physically constrains the gap distance, thereby stabilizing the magnetic circuit parameters.
2Reliability
If the gap between armatures and auxiliary yoke is not maintained, then the configuration is simpler, but the suction force fluctuates leading to potential malfunctions
Solution Approach 1:
The nonmagnetic plate acts as a dedicated intermediary component whose sole function is to maintain the gap. Being nonmagnetic, it does not interfere with the magnetic circuit while providing precise mechanical spacing, thus improving reliability without significantly complicating the structure.
Solution Approach 2:
The gap maintaining function is segmented from the other components and assigned to a dedicated nonmagnetic plate. This segmentation allows for independent optimization of the gap maintenance function while keeping the rest of the electromagnetic device configuration simple.
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 effectively stabilizes the driving operation by maintaining a consistent gap, reducing fluctuations in suction force and enhancing the reliability of the remote control relay's driving mechanism.
Implementation Method 1
a polarized electromagnet including a coil frame, a coil wound around the coil frame, and a plunger, the polarized electromagnet being configured to, when a current is applied to the coil, move the plunger
Implementation Method 2
a permanent magnet whose one magnetic pole makes contact with the yoke
Data Source
AI summary
A polarized electromagnet in a remote control relay includes a pair of armatures into which opposite ends of the plunger in a forward/backward movement direction are respectively inserted and fixed; a yoke to which one of the armatures becomes closer than the other when the plunger is at a stop position; an auxiliary yoke which contacts with one magnetic pole of a permanent magnet whose the other magnetic pole contacting with the yoke, the auxiliary yoke becoming closer to the other of the armatures than the one of the armatures; and a gap maintaining portion for maintaining a gap between the other of the armatures and the auxiliary yoke. When the plunger is at the stop position, the other of the armatures and the auxiliary yoke comes close to each other with the gap, a space is provided between the one of the armatures and the yoke.