Yoke Assembly with Elastic Deceleration Element for Switching Devices
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Solution Overview
Problem
Electromagnetic switching devices produce noise and mechanical vibrations due to impacts between the actuating assembly and the yoke or housing when switching, which is particularly problematic in industrial applications where multiple devices are arranged closely together, amplifying the noise.
Innovation Solution
A yoke assembly with integrated elastic deceleration elements that absorb energy and reduce the impact noise by decelerating the actuating assembly and switching contact before they reach the yoke, using metal or metal alloy deceleration elements mounted on the yoke to cushion the impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuating assembly directly abuts the yoke during switching, then the switching device achieves reliable contact, but noise and mechanical vibrations are generated
Solution Approach 1:
A rubber element is introduced as an intermediary component between the actuating assembly and the yoke. This rubber element absorbs impact energy through elastic deformation, reducing noise and vibration while maintaining the mechanical connection necessary for reliable switching contact.
Solution Approach 2:
The rubber element is pre-installed on the yoke in advance, positioned to cushion the impact before the actuating assembly reaches the yoke. This beforehand cushioning prevents direct hard contact, reducing impact noise and vibration while ensuring the actuating assembly can still reliably actuate the switching contact.
2Area of stationary object
If multiple electromagnetic switching devices are arranged closely together, then space utilization is improved, but noise amplification occurs
Solution Approach 1:
The rubber element serves as a noise-isolating intermediary that prevents noise transmission between closely arranged devices. By absorbing impact energy locally at each device, it prevents noise amplification even when multiple devices are positioned in close proximity.
3Speed
If the actuating assembly moves quickly to actuate the switching contact, then switching speed is improved, but impact noise increases
Solution Approach 1:
The rubber element is positioned to provide cushioning before the actuating assembly completes its rapid movement. This allows the actuating assembly to maintain high speed during actuation while the rubber element absorbs the impact energy at the end of the stroke, preventing noise generation.
Solution Approach 2:
The rubber element acts as a mediator that decouples the high-speed actuation motion from the yoke structure. It allows rapid switching contact actuation while absorbing the resulting impact, thus maintaining speed performance without generating noise.
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
Significantly reduces impact noise and mechanical vibrations during switching operations, ensuring quiet and efficient operation of electromagnetic switching devices, even in industrial settings.
Implementation Method 1
an elastic deceleration element (52a, 52b) mounted on the yoke (50) and having a deceleration face (53a, 53b)
Implementation Method 2
One of the legs has an electromagnetic element, for example a coil wound around the leg. By energizing the coil, electromagnetic flux is induced into the yoke.
Implementation Method 3
An armature is disposed at the ends of the legs opposite the bend, the armature being pulled towards the ends of the legs upon energizing the coil
Data Source
AI summary
A yoke assembly for an electromagnetic switching device is disclosed. The yoke assembly comprises a yoke and an elastic deceleration element. The yoke has a support face supporting an abutment face of an actuating assembly in a position of the switching device. The elastic deceleration element is mounted on the yoke and has a deceleration face disposed at a distance from the support face.