Insulation Board Fastening Sleeve with Adhesive Radial Expansion
Solution Overview
Problem
Existing fastening systems for insulating panels require complex installation processes and multiple components, including plate dowels that need to be adapted to specific insulation thicknesses, and often result in inadequate anchoring and heat transfer issues.
Innovation Solution
A fastening system using sleeves without a holding plate, filled with adhesive, which expand radially into the insulating material, providing a secure and uniform connection with the substrate, eliminating the need for plate dowels and additional work steps, and featuring a conical design and polygonal connections for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If plate dowels are used for fastening insulating panels, then anchoring strength is improved, but device complexity increases and installation time is lost due to needing to adapt dowel length to insulation thickness
Solution Approach 1:
The sleeve is designed as a universal fastening component that can be used for all insulation thicknesses without requiring adaptation. The sleeve combines the functions of a holding plate and an expansion anchor in a single element, eliminating the need for different-length plate dowels for different insulation thicknesses. This universal design maintains anchoring strength while reducing device complexity.
Solution Approach 2:
The invention merges the holding plate function and the expansion anchor function into a single integrated sleeve structure. The sleeve includes a holding plate at one end and an expansion zone at the other, combining multiple fastening functions into one component. This integration reduces the number of separate parts needed while maintaining or improving anchoring performance.
2Reliability
If plate dowels with milling devices are used, then anchoring security is improved, but installation time increases due to the milling process
Solution Approach 1:
The sleeve is pre-expanded at the construction site by inserting a expansion tool through the insulating panel and inflating or mechanically expanding the sleeve within the substrate. This preliminary expansion creates the anchoring security before the insulation panel is fully installed, eliminating the need for time-consuming milling operations after installation. The expansion action is performed in advance, securing the anchor before final assembly.
3Ease of operation
If conventional fastening systems are used, then installation is straightforward, but heat transfer through fastener heads increases energy loss
Solution Approach 1:
The holding plate of the sleeve is designed with a thin, flexible structure that can be deformed during the expansion process. When the sleeve is expanded, the holding plate bends and conforms to the insulating panel surface, creating a flexible barrier that reduces thermal conduction. This flexible thin-plate design maintains ease of installation while minimizing heat transfer through the fastener head area.
4Strength
If multiple components are used for fastening, then anchoring strength is improved, but productivity decreases due to complex assembly procedures
Solution Approach 1:
The invention combines multiple fastening components (holding plate, expansion zone, anchoring elements) into a single integrated sleeve component. This unified design maintains the pull-out security of multi-component systems while dramatically simplifying the installation process. The sleeve is installed as one piece, eliminating the need to assemble multiple separate components on-site, thereby improving productivity without sacrificing anchoring strength.
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
This solution simplifies installation, increases pull-out security, achieves higher strength values, and reduces heat transfer, allowing for stable anchoring of insulation boards under various loads without the need for additional components or equipment.
Implementation Method 1
a sleeve provided with wall openings without a holding plate, after the fastening means has been anchored in the substrate, closed with a pre-drilled hole up to above the introduced sleeve, running there largely flush with the surface of the insulating board, and radially expanding over the wall openings into the insulating material, the sleeve enclosing or Einkammernden adhesive filled
Data Source
Figure 1~3
Figure 4
Figure 5~7
AI summary
The invention relates to a method for attaching insulation boards (2) or similar insulating materials to a load-bearing substrate (3) and a fastening system for this purpose, wherein a sleeve (1), optionally together with a dowel (6) engaging in the hole in the substrate (8), is inserted into the insulation board (2) by means of a fastening element (7, 12) received by the sleeve (1), and anchored in the substrate (3) by means of the fastening element (7, 12). The aim is to create such a method and fastening system with which simple installation with reduced effort can be achieved when processing external thermal insulation composite systems.This is achieved by filling a sleeve (1, 100, 200) without a retaining plate, which has wall openings (4), with an adhesive (5) after the fastening element (7, 12) has been anchored in the substrate (3). The adhesive seals the pre-drilled hole (9) up to above the inserted sleeve (1, 100, 200) and extends radially over the wall openings (4) into the insulation material (14), thus creating a chamber within the sleeve (1, 100, 200).