Cylindrical Fastening Element for Insulated Wall Anchoring
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Solution Overview
Problem
Existing fastening elements for insulated building walls lack a connection to the load-bearing masonry, leading to deformation of insulation material or inability to assemble heavier add-on parts effectively.
Innovation Solution
A cylindrical fastening element with a continuous opening and a jacket featuring a recess at one end for attaching add-on parts and a holding means anchored in the building wall, allowing for axial pretension and rotational stability, along with wing-like projections and longitudinal ribs for enhanced grip and load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fastening elements are used without connection to load-bearing masonry, then installation is simple, but the insulation material deforms beyond serviceability limits or cannot support heavier loads
Solution Approach 1:
The fastening element is divided into two functional parts: a first retaining means (anchor) that connects to the load-bearing masonry, and a second retaining means that holds the attachment. This segmentation allows each part to perform its specific function optimally - the first anchor provides structural support by engaging the masonry, while the second anchor secures the attachment, together resolving the contradiction between simple installation and high load-bearing capacity.
Solution Approach 2:
The second retaining means is received within the first retaining means, creating a nested configuration. The cylindrical body of the second anchor fits into the anchor sleeve of the first anchor, forming a compact integrated assembly. This nesting allows the complex dual-anchor system to be installed as a single unit, maintaining installation simplicity while achieving high load-bearing capacity through the combined structure.
2Strength
If heavier loads are attached to insulation material only, then installation process remains simple, but the insulation material cannot support the loads
Solution Approach 1:
The first retaining means acts as an intermediary between the load-bearing masonry and the attachment. Its anchor sleeve engages the masonry structure, transferring loads from the attachment through the fastening element to the strong masonry substrate. This intermediary connection ensures reliable load transfer and prevents insulation material failure, achieving both high load support capacity and connection stability.
3Strength
If a dual retaining means system is used to connect to masonry, then load-bearing capacity increases, but installation complexity increases
Solution Approach 1:
The first and second retaining means are merged into a single integrated fastening element assembly. The second anchor is pre-configured to be received by the first anchor, allowing both anchors to be installed simultaneously in one operation. This merging eliminates the need for separate installation steps, reducing installation complexity while maintaining the load-bearing advantages of the dual-anchor system.
Data Source
Figure 1a~1c
Figure 2
AI summary
A cylindrical fastening element (1) for attaching an attachment (11) to a building wall (13) insulated with insulating material (12), having a continuous opening (2) from a first end region (3) of the cylindrical fastening element (1) to a second end region (4) of the cylindrical fastening element (1) and having a sheath (5), wherein the fastening element (1) is configured at the first end region (3) to attach an attachment (11) to the cylindrical fastening element (1), and the cylindrical fastening element (1) is configured at the second end region (4) such that a head (10) of a first retaining means, which can be arranged in the continuous opening (2), is held in the longitudinal extent of the continuous opening (2) in the direction of the second end region by the second end region (4),and the jacket (5) has a recess (6) at the second end region (4) for arranging the retaining head (10) in the through opening (2).