Active Vibration Damper Layout for Multi-Orientation Mounting
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Solution Overview
Problem
Active vibration dampers cannot be mounted with the front or rear outer wall pointing downward due to high bending stresses on retaining elements, which can lead to immediate or quick destruction.
Innovation Solution
Designing the receptacles for permanent magnets as pot-like boreholes on the outside of the front and rear outer walls, allowing for external access without opening the housing, and using a magnetic back iron yoke with a reduced cross-section to limit the magnetic field strength and compensate for weight forces, enabling mounting in various orientations without requiring additional sealing measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vibration damper is mounted with the front or rear outer wall pointing downward, then mounting versatility is improved, but the retaining elements are subjected to high bending stresses that cause immediate or quick destruction
Solution Approach 1:
The magnetic back iron yoke with reduced cross-section creates a magnetic force that acts as a counterweight to the weight force on the secondary part. This magnetic counterforce compensates for gravity, allowing the damper to be mounted with front or rear walls downward without subjecting retaining elements to excessive bending stresses
Solution Approach 2:
The cross-section of the magnetic back iron yoke is reduced in the region facing the secondary part. This parameter change limits the magnetic field strength to a specific range, optimizing the magnetic force to precisely counterbalance the weight force while preventing overload on retaining elements
2Adaptability or versatility
If receptacles for permanent magnets are introduced into the front and rear outer walls, then mounting in various orientations is enabled, but the outer walls are no longer closed which may require additional sealing measures
Solution Approach 1:
The receptacles for permanent magnets are designed as pot-like boreholes that are nested within the outer wall thickness. The permanent magnets are inserted into these receptacles, which remain embedded in the wall structure. This nesting approach maintains the closed nature of the outer wall while providing access to permanent magnets for creating the magnetic counterforce
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
Enables the active vibration damper to be mounted with the front or rear outer wall pointing downward, maintaining structural integrity and functionality across different orientations, while avoiding the need for additional sealing measures.
Implementation Method 1
a magnetic back iron yoke with a reduced cross-section to limit the magnetic field strength and compensate for weight forces
Implementation Method 2
on account of the force of attraction exerted by the primary part on the secondary part
Data Source
AI summary
An active vibration damper includes a lower outer wall for placement on a floor, and front and rear outer walls, with the front and/or rear outer wall including first and second receptacles in an outer side thereof. The first receptacle receives a permanent magnet and is pot-shaped to maintain a closed configuration of the front and/or rear outer wall. A primary part of an electrical linear actuator is fixed at least on an inside of the lower outer wall, and a secondary part is arranged above the primary part and acted upon by the primary part. Retaining elements fixed to an inside of the upper outer wall movably hold the secondary part for displacement in a substantially linear manner in a left-right direction when the primary part is correspondingly impinged on. A magnetic back iron yoke is received in the second receptacle at the height of the secondary part.