Modular Sleeve Fastening for Insulation Boards
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Solution Overview
Problem
Existing fastening systems for attaching plate-shaped elements, such as insulation panels, to a load-bearing surface face challenges in achieving a secure bond due to adhesive flow issues and require sleeves of varying lengths for different thicknesses and layers, leading to complex and costly production and logistical efforts.
Innovation Solution
A fastening system with detachable sleeves of standard lengths, connected via screw or snap connections, allowing for easy assembly to achieve the required total length, and featuring spacers for central alignment and adhesive distribution, eliminating the need for sleeves of different lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sleeves of varying lengths are manufactured to accommodate different plate thicknesses and layer configurations, then the fastening system can adapt to various installation requirements, but production complexity and cost increase significantly
Solution Approach 1:
The sleeve is divided into a modular system consisting of a basic sleeve and extendable sections that can be attached in combinations. This segmentation allows the same basic component to be configured in multiple length variations through simple attachment, eliminating the need to manufacture completely different sleeve lengths for different plate thicknesses.
Solution Approach 2:
The basic sleeve design incorporates universal features that allow it to serve multiple functions across different installation scenarios. By adding extendable sections with standardized connection interfaces, a single basic sleeve type can accommodate various plate thicknesses and layer configurations, making the fastening system universally applicable without requiring multiple specialized sleeve designs.
2Adaptability or versatility
If multiple sleeve lengths are kept on site for different insulation board configurations, then various installation scenarios can be addressed, but logistical effort and inventory management increase
Solution Approach 1:
The sleeve system is segmented into a reusable basic sleeve and interchangeable extendable sections. This allows workers to quickly configure the required sleeve length by attaching or removing sections on-site, eliminating the need to transport and manage multiple complete sleeve assemblies of different lengths.
Solution Approach 2:
The sleeve length becomes dynamic and adjustable rather than fixed. The extendable sections can be added or removed based on the specific installation requirements, allowing the same basic sleeve to adapt to different plate thicknesses and layer configurations during the installation process itself.
3Strength
If adhesive is introduced into the sleeve interior to flow through wall openings, then bonding between the plate and fastening system is achieved, but insufficient adhesive displacement of adjacent material results in weak connections
Solution Approach 1:
The sleeve wall is designed with localized features including strategically positioned openings and integrated adhesive distribution elements. These local modifications ensure that adhesive is effectively displaced into the surrounding material at critical bonding zones, creating reliable mechanical interlocking and chemical adhesion where it is most needed for connection strength.
Solution Approach 2:
The adhesive acts as an intermediary substance that is facilitated to flow through the sleeve wall openings by the integrated distribution features. This intermediary mechanism ensures uniform adhesive distribution and adequate penetration into the plate material, bridging the gap between the fastening system and the plate to create a reliable bond.
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
Enables easy and cost-effective anchoring of plate-shaped elements of varying thicknesses and layers, ensuring a uniform and secure connection with adhesive distribution, simplifying production and logistics by using standard sleeves assembled on-site.
Implementation Method 1
adhesive introduced into the interior of the sleeve to pass through
Implementation Method 2
A suitable adhesive is a foam adhesive, preferably one classified as a fire-resistant foam of class B1 according to DIV 4120-1. A polyurethane (PU) foam is preferred due to its comparatively low expansion and high adhesive strength after curing.
Data Source
Figure 1a~1d
Figure 2a~2c
Figure 3a~3c
AI summary
To provide a fastening system that allows for the easy anchoring of plate-shaped elements, particularly insulation boards, of varying thicknesses and/or numbers of layers to a substrate, the fastening system comprises a fastener for anchoring the fastening system to the substrate, at least two sleeves with wall penetrations arranged behind the fastener in one anchoring direction, and a releasable connection between all sleeves. The fastener can be passed through the sleeves and is received by the sleeve furthest forward in the anchoring direction. The wall penetrations in the sleeves are designed to allow the passage of an adhesive that bonds the fastening system to the plate-shaped elements.