Spring-Magnet Audio Isolator for Broad-Frequency Vibration Damping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vibration damping solutions for audio equipment, such as elastomer or rubber dampers, are limited in their ability to isolate vibrations across a broad frequency range and require precise loading to maintain optimal performance, failing to effectively reduce vibrations when loaded below 90% of their maximum capacity.
Innovation Solution
A vibration isolator comprising a base and top connected by a combination of springs and permanent magnets, which biases the top apart and towards the base, using magnetic oscillation damping and eddy currents to isolate vibrations across a wide frequency range, allowing easy configuration for different types and weights of audio equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastomer or rubber dampers are used in vibration isolating feet, then the feet can dampen vibrations, but they only dampen vibrations in a narrow frequency range and a bulk of vibrations still transfer from or to the audio equipment
Solution Approach 1:
The patent uses a composite damping mechanism combining magnetorheological fluid (a smart material that changes viscosity under magnetic fields) with traditional elastomer materials. This composite approach enables the damping system to adapt its properties across different frequency ranges, overcoming the limitation of single-material dampers that only work effectively in narrow frequency bands
Solution Approach 2:
The patent employs magnetorheological fluid whose viscosity can be dynamically changed by applying magnetic fields. By adjusting the magnetic field strength, the damping characteristics can be modified to effectively dampen vibrations across a broad frequency range, rather than being fixed to a narrow range as with conventional elastomer dampers
2Device complexity
If a single material is used for damping vibrations in the feet, then the structure is simple, but it makes it hard to adjust or configure the feet to dampen a specific range of frequencies
Solution Approach 1:
The patent transforms the static damping property of traditional single-material feet into a dynamic system by incorporating magnetorheological fluid that can change its viscosity in real-time. This allows the damping characteristics to be adjusted and configured for different frequency ranges without changing the physical structure, providing flexibility while maintaining relatively simple construction
Solution Approach 2:
The patent replaces the need for multiple mechanical damping components or adjustable mechanical structures with a field-based control mechanism. By using magnetic fields to control the viscosity of the magnetorheological fluid, the system achieves frequency configuration flexibility without complex mechanical adjustment mechanisms
3Reliability
If the vibration isolating feet are loaded around 90%-100% within the maximum load capacity, then optimal damping performance is provided, but when loaded below 90% (e.g., at 50% of maximum load capacity) the damping performance is reduced
Solution Approach 1:
The patent uses magnetorheological fluid whose viscosity can be adjusted by changing magnetic field parameters. This allows the damping characteristics to be optimized for different load conditions, maintaining effective vibration damping whether the feet are lightly or heavily loaded, unlike conventional feet that require near-maximum loading for optimal performance
Solution Approach 2:
The system can sense the load condition and adjust the magnetic field strength accordingly to optimize damping performance. By providing feedback control, the system maintains reliable vibration isolation across varying load conditions, adapting to maintain optimal performance rather than requiring precise pre-loading as with traditional dampers
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 isolator effectively reduces vibrations between the audio equipment and its support surface across a broad frequency range, improving sound clarity and reducing unwanted noise transmission, while supporting a wide range of equipment weights and frequencies.
Implementation Method 1
the plurality of springs biases the top apart from the base, in the axis direction
Implementation Method 2
the plurality of magnets biases the top towards the base, in the axis direction
Implementation Method 3
using magnetic oscillation damping and eddy currents to isolate vibrations across a wide frequency range
Implementation Method 4
using magnetic oscillation damping and eddy currents to isolate vibrations across a wide frequency range
Data Source
Figure 1~2
Figure 3a~3d
Figure 4a~6
AI summary
A vibration isolator (10) to support an audio equipment (110) that vibrates or is sensitive to vibrations, the vibration isolator comprising, a base (14) and a top (12), the base (14) is adapted, or arranged, to be placed on a surface (104), and the top (12) is adapted, or arranged, to engage and support the audio equipment (110), wherein the top (12) and base (14) are positioned relative to each other and define a central axis (100) transverse to the surface (104), and an isolator assembly that couples the top (12) to the base (14) and vibration isolates the top (12) from the base (14) and at least partly inhibit the transfer of vibrations between the top (12) and the base (14), and the isolator assembly comprises a plurality of springs (24) and a plurality of permanent magnets (22), wherein each of the plurality of springs forms a pair with one of the plurality of magnets, wherein the spring and magnet of each pair are aligned with, and coaxial to, each other, wherein the plurality of springs (24) biases the top (12) apart from the base (14) in the axis direction (100), and the plurality of magnets (22) biases the top (12) towards the base (14), in the axis direction (100).