Electromagnetic Relay Base Structure for Heat Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The insulating base of conventional electromagnetic relays can deform under heat, leading to changes in the relay's characteristics and performance.
Innovation Solution
Incorporating a rigid member made of a magnetic material with higher rigidity than the base into the electromagnetic relay's base to enhance its strength and suppress magnetic flux leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base is made of an insulating material such as resin, then the base provides electrical insulation, but the base deforms under heat during energization
Solution Approach 1:
The base is constructed as a composite structure combining an insulating material (resin) with a rigid member made of magnetic material. This composite design allows the base to maintain electrical insulation properties while the rigid magnetic member provides thermal stability and prevents deformation under heat during energization.
2Strength
If a rigid member is incorporated in the base to increase strength, then the base resists deformation, but the device complexity increases
Solution Approach 1:
The rigid member incorporated in the base serves multiple functions simultaneously: it acts as a structural reinforcement to prevent base deformation, provides a magnetic flux shield to suppress leakage, and maintains the geometric relationships between components. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity.
3Strength
If the rigid member extends from the contact block to the electromagnet block, then the strength of the rigid member increases, but the magnetic flux leakage suppression may be compromised
Solution Approach 1:
The rigid member is positioned and dimensioned to provide localized magnetic flux shielding at critical areas where flux leakage occurs, rather than extending unnecessarily. This localized approach maintains adequate strength for structural support while minimizing interference with the magnetic field path between the permanent magnet and contact block.
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 increased strength of the base prevents deformation due to heat or mechanical stress, while the magnetic rigid member effectively suppresses magnetic flux leakage, maintaining the relay's performance.
Implementation Method 1
The permanent magnet generates a magnetic field in the contact block
Implementation Method 2
The rigid member is made of a magnetic material having a higher rigidity than the base, is incorporated in the base, and suppresses a magnetic flux leakage of the permanent magnet
Data Source
AI summary
An electromagnetic relay includes a base, a contact block, an electromagnet block, a permanent magnet, and a rigid member. The base is insulating. The contact block is placed on the base. The electromagnet block is placed on the base at a space from the contact block. The permanent magnet generates a magnetic field in the contact block. The rigid member is made of a magnetic material having a higher rigidity than the base, is incorporated in the base, and suppresses a magnetic flux leakage of the permanent magnet.