Angle Connector with Elastomer Layer for Noise Reduction
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Solution Overview
Problem
Existing angle connectors in building and mechanical engineering transmit structure-borne noise and vibrations due to direct attachment of legs to components, which is not effectively mitigated by prior solutions.
Innovation Solution
Incorporating a sound-absorbing and/or vibration-isolating intermediate layer made of materials like elastomers between the legs and components, preventing direct contact and thus reducing noise transmission, with optional additional layers at fastening points to prevent sound bridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If direct attachment of legs to components is used, then structural strength and stability are improved, but structure-borne noise transmission increases
Solution Approach 1:
A vibration isolation element is introduced as an intermediary component between the angle connector leg and the component to be fastened. This intermediary element decouples the direct mechanical connection, thereby reducing structure-borne noise transmission while preserving the structural strength provided by the angle connector.
2Object-generated harmful factors
If vibration isolation elements are added to reduce noise, then sound insulation is improved, but device complexity increases
Solution Approach 1:
The vibration isolation element is integrated with the angle connector to form a combined fastening system. This merging approach allows the vibration isolation function to be incorporated without significantly increasing overall device complexity, as the elements work together as a unified assembly.
3Object-generated harmful factors
If intermediate layers are provided between legs and components, then vibration isolation is improved, but ease of manufacture deteriorates
Solution Approach 1:
The vibration isolation element is designed as a thin, flexible component that can be easily positioned and attached between the angle connector leg and the component. This thin-film approach maintains ease of manufacture while providing effective vibration isolation through its material properties.
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 the transmission of structure-borne noise and vibrations by using elastomer-based intermediate layers, ensuring effective sound insulation and vibration isolation between connected components.
Implementation Method 1
The interposition of the intermediate layer made of a sound-absorbing and/or vibration-isolating material between at least one of the legs and one of the components at least largely prevents structure-borne noise from being transmitted
Implementation Method 2
The intermediate layer favorably has a static modulus of elasticity between 0.025 N/mm 2 and 5 N/mm 2 and a dynamic modulus of elasticity between 0.025 N/mm 2 and 15 N/mm 2
Data Source
Figure 1~2
Figure 3
AI summary
Angle connector with at least two legs (1, 2) arranged at an angle to each other that differs from 0° and 180° for fastening a component (3) to another component (4), wherein at least one intermediate layer (5) made of a sound-absorbing and/or vibration-insulating material is arranged on at least one of the legs (1).