Shielding Device with Resilient Fastening Eyelet
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Solution Overview
Problem
Existing shielding devices face challenges in effectively decoupling oscillations and heat transmission, requiring compression of wire mesh decoupling elements that lose elasticity during fastening, and have insecure fastening eyelets prone to disassembly issues, increasing manufacturing costs and complexity.
Innovation Solution
A shielding device with a resiliently supported fastening eyelet that moves radially within a shielding element's fastening opening, utilizing spring washers and intermediate layers to maintain constant friction force and reduce thermal transmission, allowing for adaptable oscillation and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wire mesh decoupling element is compressed during fastening to provide oscillation damping, then oscillation damping is improved, but the wire mesh loses its elastic compressibility and can no longer effectively damp oscillations
Solution Approach 1:
The coupling device is designed as a resilient element that remains dynamically compressible during operation. Unlike the wire mesh that loses elasticity when compressed, the coupling device maintains its ability to compress and rebound, providing continuous oscillation damping throughout the service life of the fastening connection.
Solution Approach 2:
The coupling device changes its compression parameter dynamically in response to oscillations. It compresses during oscillatory movements and rebounds, maintaining variable elasticity that adapts to the oscillation amplitude, thereby providing effective damping without permanent deformation.
2Object-affected harmful factors
If a wire mesh structure is used to reduce temperature transmission, then thermal insulation is improved, but the wire mesh must be compressed during fastening which reduces its insulating capability
Solution Approach 1:
The thermal insulation function is extracted from the fastening eyelet and assigned to a dedicated intermediate layer. This intermediate layer is positioned between the coupling device and the shielding element, providing consistent thermal insulation without being affected by the compression and movement of the fastening components.
3Ease of manufacture
If the fastening eyelet is not secured in captive fashion, then manufacturing is simpler, but special steps are required to ensure the decoupling element cannot come out during assembly
Solution Approach 1:
The coupling device is designed with a geometry that enables preliminary insertion through the fastening opening. The resilient nature of the coupling device allows it to be inserted before the shielding element is fully assembled, and it automatically secures itself through elastic retention, preventing it from falling out during assembly operations.
4Adaptability or versatility
If the fastening eyelet is resiliently supported to move freely in radial direction, then adaptability to tolerances is improved, but the fastening security may be compromised
Solution Approach 1:
The coupling device acts as an intermediary element between the fastening eyelet and the shielding element. It provides resilient support that allows controlled radial movement to accommodate tolerances, while simultaneously maintaining secure fastening through its elastic retention and frictional engagement with the shielding element surface.
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 solution provides reliable oscillation and heat decoupling with reduced manufacturing costs, improved fastening security, and adaptable design for various stress scenarios, ensuring constant force application and minimizing wear on the shielding element.
Implementation Method 1
the fastening eyelet is supported by a resiliently embodied coupling device so that it is resiliently supported relative to the shielding element in an axial direction and is able to move in the fastening opening relative to the shielding element in at least one radial direction when acted on with friction force
Implementation Method 2
radially outer regions of the coupling device cooperate in a resiliently prestressed fashion with sliding zones on opposite surfaces of the shielding element
Data Source
AI summary
The invention relates to a shielding device with a shielding element and at least one fastening eyelet for fastening the shielding device to a counterpart fastening piece and for receiving a fastening element. The fastening eyelet is movably supported in a fastening opening of the shielding device. The fastening eyelet is supported by a resiliently embodied coupling device so that the fastening eyelet is resiliently supported relative to the shielding element in an axial direction and is movable in the fastening opening relative to the shielding element in at least one radial direction when acted on with friction force. To produce friction force, radially outer regions of the coupling device cooperate in a resiliently prestressed fashion with sliding zones of opposing outsides of the shielding element.