Self-Supporting Plastic Anchor Eliminates Thermal Bridges
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Solution Overview
Problem
Current anchoring systems for thermally insulating building materials face issues such as the creation of thermal bridges, inadequate anchoring strength, and the inability to handle varied building surface materials and conditions, particularly with mineral wool insulation, which is prone to degradation and increased weight with humidity.
Innovation Solution
A self-supporting anchor with screwing or recessing items, such as cut segments or a rim, is used, which penetrates the building insulation and structure without additional reinforcement, utilizing an expansion filling material to create a strong and reliable anchoring connection, preventing thermal bridges and accommodating different insulation types and thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If plastic dowels with metal reinforcement pins are used for anchoring, then anchoring strength is improved, but thermal bridges are created
Solution Approach 1:
The metal reinforcement pin is extracted from the anchoring system. The patent uses plain plastic dowels without metal reinforcement, eliminating the thermal bridge problem while maintaining anchoring strength through the plastic material's expansion and friction mechanisms.
Solution Approach 2:
The patent employs simple, inexpensive plastic dowels that are sufficient for the anchoring task without requiring expensive metal reinforcement. The plastic material provides adequate strength through its expansion properties and friction with the drilled hole.
2Object-affected harmful factors
If disc dowels are used to eliminate thermal bridges, then thermal bridge creation is reduced, but installation labor and cost increase
Solution Approach 1:
Instead of using complex disc-shaped dowels with central holes that require insertion through the insulation, the patent uses simple cylindrical plastic dowels that are inserted into drilled holes in the building structure. This inverts the traditional approach and simplifies the installation process.
Solution Approach 2:
The anchoring system is segmented into simple, standardized plastic dowels that can be quickly installed using conventional drilling and insertion methods, improving installation efficiency compared to complex disc dowels.
3Object-affected harmful factors
If disc dowels are used to improve connection, then thermal bridge creation is reduced, but insulating material cohesion is compromised
Solution Approach 1:
The metal reinforcement pin is removed from the system, eliminating the thermal bridge while the plastic dowel maintains connection through expansion and friction without compromising the insulating material's cohesion.
Solution Approach 2:
The plastic dowel material provides a porous or flexible structure that can expand and create friction with the surrounding material, maintaining cohesion without requiring metal reinforcement that would create thermal bridges.
4Ease of operation
If conventional anchors are used, then installation is simplified, but anchoring strength in varied building surfaces is insufficient
Solution Approach 1:
The patent employs multiple parameters including dowel diameter, length, expansion force, and friction characteristics to optimize anchoring strength for varied building surfaces while maintaining simple installation procedures.
Solution Approach 2:
The plastic dowel material combines properties of flexibility, expansion, and friction to create a composite effect that provides strong anchoring in varied building surfaces including hollow bricks and irregular substrates.
5Force
If disc anchors are used for additional anchoring, then wind load resistance is improved, but anchoring strength in hollow structures is insufficient
Solution Approach 1:
The plastic dowel's porous or flexible structure allows it to expand and fill hollow spaces in building structures, creating friction and mechanical interlocking that provides anchoring strength in hollow bricks and cavities.
Solution Approach 2:
The patent optimizes dowel parameters such as expansion force, diameter, and length to ensure adequate anchoring strength in hollow structures while maintaining resistance to wind loads.
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 enhances the holding-down ability of the anchor, ensuring strong and reliable connections even under stress, such as from wind vibrations, and extends the service life of thermally insulating systems by avoiding thermal bridges and adapting to various insulation materials and conditions.
Implementation Method 1
the anchor in the anchoring hole is filled with an expansion filling material
Data Source
AI summary
The anchoring connection includes a self-supporting anchor (1, 1a, 1b, 1c, 1d) without inner reinforcement pins, the body (2) of which Worn metallic or non-metallic netting in the form of a tubular coil or space spiral (17, 17a) is provided with at least one screwing and/or recessing item, the external maximum dimension Phiz of which, vertical to the longitudinal axis (5) of the body (2), is always bigger than the external maximum dimension Phiz of the body (2) vertical to the longitudinal axis (5) of the body (2). Each screwing item is equipped with at least one cutting edge and/or at least one cutting surface for the creation of the efficient screwing surface (33), which represents the screwing surface (33) or a sum of projections of screwing surfaces (33) to a plane vertical to the longitudinal axis (5) of the body (2). Each recessing item is equipped with at least one recessing edge and/or at least one recessing surface for the creation of the efficient recessing surface (34), which represents the surface or a sum of projections of recessing surfaces (34) to a plane vertical to the longitudinal axis (5) of the body (2). Furthermore, the anchoring connection includes the expansion filling material (3), which fills, after hardening: the body (2) of the anchor (1, 1a, 1 b, 1c, 1d) outside and inside or, as the case may be, the inside of the coil or space spiral of the body (2), the surroundings of the external screwing and/or recessing item, all free space in the anchoring hole (15) and marks in the building insulation (16) created after the penetration of the screwing and/or recessing item into the building insulation (16). A mounting jig (11) and an installation tool (19) are designed for adjustment of the anchor assembly.