Active Vibration Damper Housing for Multi-Orientation Mounting
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Solution Overview
Problem
Active vibration dampers are limited in mounting orientations, specifically unable to be mounted with the front or rear outer walls facing downwards due to high bending stresses on holding elements, which can lead to destruction.
Innovation Solution
The design incorporates cup-shaped receptacles for permanent magnets on the outer walls, allowing for external access without opening the housing, and a magnetic return yoke with a reduced cross-section to limit magnetic field strength, enabling secure mounting in various orientations without additional sealing measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vibration damper is mounted with front or rear outer walls facing downwards, then mounting versatility is improved, but the holding elements are subjected to high bending stresses that lead to destruction
Solution Approach 1:
The magnetic components (permanent magnets and return yoke) are extracted from the internal structure and relocated to receptacles on the outer surface of the housing. This allows the magnetic force to be applied externally to counteract gravity when mounted in any orientation, eliminating the bending stress problem on holding elements while enabling universal mounting versatility
2Reliability
If permanent magnets and return yoke are installed inside the housing, then magnetic circuit functionality is improved, but sealing complexity increases due to open receptacles
Solution Approach 1:
The permanent magnets and return yoke are nested within cup-shaped receptacles that are integrated into the housing structure. The cup shape provides natural containment and sealing surfaces, allowing the magnetic components to be protected within the housing without requiring additional sealing measures, thus maintaining both functionality and simplicity
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
This configuration allows the vibration damper to be mounted with any outer wall facing downwards, ensuring durability and maintaining functionality across different orientations, while minimizing the need for additional sealing measures.
Implementation Method 1
Due to the force of attraction exerted by the primary part on the secondary part
Implementation Method 2
a resulting magnetic field strength of the magnetic circuit formed by the secondary part, the permanent magnets and the return yoke is preferably limited by the return yoke
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to an active vibration damper, having a substantially cuboid housing (1), such that the housing (1), when positioned having a lower outer wall (2) on the floor, additionally has an upper outer wall (3), a front and rear outer wall (4, 5) and a left and a right outer wall (6, 7). A primary part (8) of an electrical linear actuator is fixed on the inside of the lower outer wall (2). The primary part (8) acts on a secondary part (10) of the electrical linear actuator, arranged above the primary part (8). The secondary part (10) is movably held on the left and right via a retaining element (14, 15), fixed to the inside of the upper outer wall (3) in each case, such that the secondary part (10) is movable in a substantially linear manner when the primary part (8) is correspondingly impinged on in the left-right direction. A number of receptacles (16) for permanent magnets (17) and, furthermore, a receptacle (18) for a magnetic back iron yoke (19) are introduced into the front outer wall (4) and/or into the rear outer wall (5) at the height of the secondary part (10). The receptacles (16, 18) are introduced in the outside of the front and/or rear outer wall (4 and 5). The receptacles (16) for the permanent magnets (17) are designed in a pot-like manner, such that the corresponding outer wall (4 and 5) is retained as a closed outer wall despite the receptacles (16) for the permanent magnets (17).