Soft-Collision Electromagnetic Driving Mechanism With Damping
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Solution Overview
Problem
Existing electromagnetic driving mechanisms experience strong impact forces and bounce when hindered, leading to arc discharge, contact damage, and noise, which affect electrical quality and mechanical lifespan in switch apparatus.
Innovation Solution
A soft-collision electromagnetic driving mechanism with a movable shaft, damping piston, and damping liquid, where the damping piston is connected to a movable iron core and drive coils, utilizing a two-way discharge channel and one-way discharge valve to reduce collision impact, ensuring smooth contact and strong driving force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If strong driving force is used in electromagnetic driving mechanism, then driving speed is improved, but impact force and bounce increase causing arc discharge and contact damage
Solution Approach 1:
The patent introduces a damping mechanism with damping liquid and discharge channels before the collision occurs. The damping piston and damping liquid are positioned to absorb impact energy during the collision process, cushioning the blow before it reaches the contact surfaces. This beforehand cushioning prevents arc discharge and contact damage while maintaining high driving speed.
Solution Approach 2:
The damping liquid acts as an intermediary substance between the moving electromagnetic driving mechanism and the stationary structure. When collision occurs, the damping liquid flows through the discharge channels, providing a medium that absorbs and dissipates impact energy, thereby reducing the harmful effects of collision on contacts and structure.
2Force
If rigid contact is used in electromagnetic driving mechanism, then driving force is improved, but collision damage to contact surfaces increases shortening mechanical lifespan
Solution Approach 1:
The damping mechanism is pre-positioned to activate during collision. The damping liquid and discharge channels are designed to engage before the full impact force reaches the contact surfaces, cushioning the blow in advance. This protects the contact surfaces from damage while preserving the strong driving force capability.
Solution Approach 2:
The patent uses a hydraulic damping system where damping liquid flows through restricted channels during collision. The hydraulic resistance provides a controlled cushioning effect that reduces impact damage to contact surfaces and structure, thereby extending mechanical lifespan while maintaining driving force.
3Force
If rigid collision occurs in electromagnetic driving mechanism, then driving force is improved, but noise increases affecting environment
Solution Approach 1:
The damping liquid serves as an intermediary that absorbs collision energy through viscous flow and turbulence in the discharge channels. This energy absorption converts mechanical collision energy into fluid motion and heat, significantly reducing the noise generated by rigid collision while preserving the driving force.
4Object-affected harmful factors
If damping mechanism is added to reduce impact, then impact force is reduced, but device complexity increases
Solution Approach 1:
The damping mechanism is merged with the electromagnetic driving mechanism structure. The damping piston is integrated into the moving assembly, and the damping liquid chambers are combined with the existing cylindrical structure. This merging reduces the number of separate components and simplifies the overall structure while maintaining impact reduction capability.
Solution Approach 2:
The damping mechanism serves multiple functions: it reduces impact force, dampens vibrations, and extends mechanical lifespan. By integrating these functions into a single damping system with liquid and discharge channels, the patent avoids adding separate complex subsystems, thereby limiting the increase in device complexity.
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 mechanism achieves smooth contact and strong driving force while minimizing impact forces and noise, enhancing the mechanical lifespan and electrical quality of switch apparatus.
Implementation Method 1
a damping liquid is filled in the first and second sealing chambers, and a two-way discharge channel is arranged between the first and second sealing chambers
Implementation Method 2
The electromagnetic mechanism comprises a second cylinder, a permanent magnet, the movable shaft and a movable iron core, and drive coils
Data Source
AI summary
A soft-collision electromagnetic driving mechanism comprises a movable shaft driven by an electromagnetic mechanism, wherein the movable shaft is fixed to a movable iron core, an upper part of the movable shaft is connected to a movable damping mechanism, the movable damping mechanism comprises a first cylinder, the first cylinder has a movable damping piston therein, the movable damping piston is formed by a damping piston head and damping piston rods disposed at two sides of the damping piston head, first and second sealing chambers are at the two sides of the damping piston head respectively, a damping liquid is filled in the first and second sealing chambers, and a two-way discharge channel is arranged between the first and second sealing chambers. The driving mechanism is a permanent magnetic linear driving mechanism having a simple structure, a strong driving force and smooth contact, which can be used to drive electrical switches or devices requiring smooth contact, strong driving force and high speed.