Laminated Vibration Absorption Device for Acoustic Insulation
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Solution Overview
Problem
Existing vibration isolation methods for building structures are inadequate in effectively absorbing vibrations and providing acoustic insulation, particularly in commercial and non-commercial settings, as they often rely on passive techniques like rubber pads or mechanical springs, which may not sufficiently mitigate low and medium frequency vibrations.
Innovation Solution
A vibration absorption device comprising a sound-absorbing cushion and a vibration isolation cushion, where the latter is rigid and the former is supple, laminated together to provide effective isolation and insulation, using materials like neoprene rubber and fire-rated fiberboard panels, with dimples for additional air pocket absorption, and a self-adhesive design for easy mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If passive vibration isolation techniques like rubber pads or mechanical springs are used, then the device structure is simple, but the vibration absorption effectiveness is insufficient particularly for low and medium frequency vibrations
Solution Approach 1:
The patent applies composite materials by combining a supple absorbent cushion (made of sound-absorbing material) with a rigid vibration isolation cushion (made of vibration isolation material) into a single laminated device. This composite structure integrates the advantages of both material types: the supple material absorbs low-frequency vibrations through deformation, while the rigid material provides structural stability and isolates medium-frequency vibrations, thereby resolving the contradiction between structural simplicity and vibration absorption effectiveness.
Solution Approach 2:
The patent applies local quality by creating a device with spatially varying mechanical properties - the absorbent cushion portion is designed to be supple and compliant for absorbing low-frequency vibrations, while the vibration isolation cushion portion is designed to be rigid for providing structural support and isolating medium-frequency vibrations. This local differentiation of material properties allows each region of the device to optimally address specific vibration frequencies, improving overall effectiveness without significantly complicating the overall device structure.
2Reliability
If a laminated structure with supple and rigid cushions is used, then the vibration absorption effectiveness is improved, but the device complexity increases
Solution Approach 1:
The patent applies merging by combining two distinct functional components (the supple absorbent cushion and the rigid vibration isolation cushion) into a single laminated device that functions as one integrated unit. The layers are bonded together to create a unified structure that simultaneously provides both vibration absorption and structural support, thereby improving vibration absorption effectiveness while avoiding the complexity of separate components and their associated mounting hardware.
Solution Approach 2:
The patent applies universality by designing the laminated device to perform multiple functions simultaneously: the supple absorbent cushion absorbs low-frequency vibrations, the rigid vibration isolation cushion provides structural support and isolates medium-frequency vibrations, and the combined structure can be mounted to various building structures (ceilings, floors, partitions) for acoustic insulation. This multi-functionality improves vibration absorption effectiveness across different applications without proportionally increasing device complexity.
3Ease of operation
If traditional vibration isolation methods are used, then the installation process is simple, but the acoustic insulation performance is inadequate
Solution Approach 1:
The patent applies composite materials by laminating the supple absorbent cushion with the rigid vibration isolation cushion, creating a device that combines the sound-absorbing properties of porous materials with the vibration-isolating properties of rigid materials. This composite structure effectively reduces sound transmission by addressing both airborne sound (through the absorbent material) and structure-borne sound (through the rigid isolation layer), thereby improving acoustic insulation performance while maintaining ease of installation as a single integrated unit.
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 device significantly reduces vibrations and sound transmission by 3 to 5 dB, meeting stringent fire resistance and soundproofing standards, and allows for quick and cost-effective assembly without mechanical attachments.
Implementation Method 1
an absorbent cushion comprising sound absorbing material
Implementation Method 2
a vibration isolation cushion comprising vibration isolation material, the vibration isolation cushion overlying and being laminated to the absorbent cushion
Implementation Method 3
the exposed surface comprises an adhesive substance
Data Source
AI summary
A vibration absorption device for acoustic insulation for a building structure comprises an absorbent cushion and a vibration isolation cushion. The building structure is selected from a ceiling structure, a floor structure and a partitioning structure separating two adjacent building compartments or a building compartment and the external environment. The absorbent cushion comprises sound absorbing material and the vibration isolation cushion comprising vibration isolation material. The vibration isolation cushion overlies and is laminated to the absorbent cushion. The vibration isolation cushion is rigid relative to the absorbent cushion. The absorbent cushion is supple relative to the vibration isolation cushion. The vibration absorption device is mountable to the building structure, to isolate vibrations and to provide acoustic insulation between the two separated and adjacent building compartments.