Adhesive Retaining Ring Mount for Lightweight Wall Fastening
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Solution Overview
Problem
Existing fastening solutions for lightweight wall components in aircraft construction are cumbersome, heavy, and difficult to install, particularly when trying to achieve a force- and form-fitting interface without increasing the weight or complexity of the installation process.
Innovation Solution
A retaining device with a main body featuring a circular-ring-shaped surface and offset passage openings, which includes a fastening arrangement and a cover, uses an adhesive track for secure attachment to the wall, allowing for a force- and form-fitting interface with a counterpart fastener, and is designed for easy installation and adaptability to different wall thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If inserts with threaded nuts or clamps are adhesively bonded in blind holes to provide a force- and form-fitting interface, then the fastening strength is improved, but the weight and installation complexity increase significantly
Solution Approach 1:
The fastening device is divided into a two-part system: a retaining device with adhesive bonding surface for wall attachment, and a separate fastening element that inserts through the wall. This segmentation allows the adhesive to provide the primary bonding function while the fastening element provides mechanical engagement, reducing the need for heavy inserts in blind holes.
Solution Approach 2:
The heavy threaded nuts and clamps are extracted from the adhesive bonding system. Instead of embedding these heavy components in blind holes, the patent uses a simple retaining device with adhesive surface that bonds directly to the wall, eliminating the need for heavy fastening inserts.
2Reliability
If inserts are prepared and introduced beforehand at exactly the right point to provide a force- and form-fitting interface, then the fastening reliability is improved, but the installation time and complexity increase
Solution Approach 1:
The retaining device is prepared in advance with the adhesive surface ready for bonding, but the actual fastening element is not pre-installed in blind holes. Instead, the retaining device is bonded to the wall first, and the fastening element is simply inserted through the wall opening at the time of use, eliminating the need for complex pre-preparation of blind holes and inserts.
3Ease of operation
If clip connectors are used to provide a fastening element on the rear side of the sandwich panel, then the ease of mounting is improved, but the adaptability to different wall positions is limited to edges only
Solution Approach 1:
The retaining device is designed with a universal adhesive bonding surface that can be attached to any wall surface (edges, flat surfaces, curved surfaces) rather than being limited to edge positions only. The same device structure serves multiple positioning functions through its adhesive attachment capability.
4Strength
If a fastening device is adhesively bonded to the wall over a full area to attach objects to tiles, then the attachment strength is improved, but the complexity of the fastening system increases
Solution Approach 1:
Instead of using full-area adhesive bonding which requires complex fastening systems, the patent uses localized adhesive bonding at the retaining device's bonding surface. This localized approach provides sufficient attachment strength while keeping the device structure simple and easy to install.
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 a lightweight, easy-to-use fastening system that reduces the force introduced into the wall volume, eliminates the need for hollow chambers, and allows for easy adaptation to varying wall thicknesses, while ensuring secure attachment and aesthetic integration.
Implementation Method 1
uses an adhesive track for secure attachment to the wall
Data Source
AI summary
A retaining device for attachment of objects to a wall surface includes a main body, a fastening arrangement, and a cover lockable to the main body that arches over the fastening arrangement. The main body has a bottom side, that faces the wall during mounting, and a top side, that faces away and includes a retaining ring. The fastening arrangement includes a fastener and a centering cap which fixes the fastener. The bottom side of the main body has a circular-ring-shaped surface, on inner and outer edges of which, in each case, one closed encircling web is provided which faces away from the bottom side. Two passage openings are provided in the circular-ring surface between the top and bottom sides. When attached, the main body is pressed onto the wall and an adhesive is injected through one of the passage openings until it emerges again at the other passage opening.