Electromagnetic Relay Switch Control Unit for Vibration Resistance
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Solution Overview
Problem
Conventional electromagnetic relays face issues with waste heat production and armature displacement due to continuous current requirements and magnetic attraction, leading to safety concerns and vibration.
Innovation Solution
An electromagnetic relay assembly with a housing, electromagnetic unit, switch assembly, and switch control unit, featuring a sliding member and locking mechanism that ensures reliable switching between connected and disconnected states without continuous power, using a magnetic spool, coil, and armature, along with a resilient force to maintain the switch state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coil is continuously energized to maintain the circuit at the closed position, then the circuit remains closed, but waste heat is produced and peripheral elements age faster
Solution Approach 1:
The relay uses periodic electromagnetic activation instead of continuous energization. The resilient member stores mechanical energy when the armature is actuated, maintaining the closed circuit position without continuous power supply. This periodic action eliminates continuous waste heat generation while preserving circuit closure reliability.
Solution Approach 2:
The resilient member serves itself by storing mechanical energy during actuation and automatically releasing it to maintain the armature position. This self-service mechanism eliminates the need for continuous external energy input, reducing waste heat production while maintaining reliable circuit closure.
2Loss of energy
If a permanent magnet is used to attract and position the armature at a circuit making position, then the armature is positioned without continuous power, but the armature may be displaced due to vibration
Solution Approach 1:
The system transitions from static magnetic attraction to dynamic mechanical locking. The resilient member provides dynamic mechanical force that adapts to vibrational conditions, while the locking member engages with the guide groove to provide stable positioning. This dynamic mechanism maintains armature position reliability without continuous power while resisting vibrational displacement.
Solution Approach 2:
The locking member acts as an intermediary between the resilient member and the armature. It translates the resilient force into a stable mechanical lock within the guide groove, providing reliable positioning that resists vibration without requiring continuous power input.
3Reliability
If a locking mechanism with sliding member and locking member is added to prevent armature displacement, then position stability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is merged with the existing electromagnetic unit and switch assembly. The sliding member integrates with the guide groove structure, and the locking member combines the resilient force application with the mechanical locking function. This merging reduces overall device complexity while achieving reliable armature positioning.
Solution Approach 2:
The guide groove serves multiple functions: it guides the sliding member's movement, provides the locking interface for the locking member, and defines the armature's operational path. This multi-functionality reduces the need for separate components, thereby reducing device complexity while maintaining position stability.
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 provides reliable and safe operation even in vibrating environments, reducing waste heat and maintaining switch states without continuous power, enhancing safety and reducing assembly complexity.
Implementation Method 1
When the coil 62 is energized by a small electrical current that passes therethrough, a magnetic field is generated by the iron core 61 due to electromagnetic induction
Implementation Method 2
The switching unit provides a resilient force to push the sliding member to the first position and to place the locking portion in the first locking site
Data Source
AI summary
An electromagnetic relay assembly includes a switching unit to push a sliding member and to place a locking portion of a locking member to lock the sliding member at a first position where the switching unit switches a first conductive plate and a second conductive plate to an electrically disconnected state. When a coil is energized, the sliding member is moved to a second position, and the locking portion of the locking member is placed to lock the sliding member in the second position where the switching unit is actuated by the sliding member to switch the first and second conductive plates to an electrically connected state.