Fixing System for Lightweight Loads on Insulating Coatings
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Solution Overview
Problem
Existing fixing systems for lightweight loads on insulating coatings of external building walls, such as window shutter hinges, face challenges with unreliable anchoring due to the soft nature of polyurethane foam panels and the need for precise alignment, leading to inefficiencies and the requirement for multiple device sizes for varying coating thicknesses.
Innovation Solution
A fixing device comprising a base fixed to the masonry wall and a separate support with a grid structure, where a bushing is inserted into holes in both the coating and support, and a chemical anchoring product is injected to secure lightweight loads, eliminating the need for pre-formed holes and adjustable frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blocks with pre-formed threaded holes are used for mounting shutter hinges, then the fixation reliability is improved, but the adaptability to different coating thicknesses deteriorates
Solution Approach 1:
The fixing device is divided into two separate components: a base block fixed to the wall and a support element with the threaded hole. This segmentation allows the base to remain embedded in the insulating coating while the support can be adjusted to accommodate different coating thicknesses, thereby maintaining both fixation reliability and adaptability.
Solution Approach 2:
The support element is designed to be adjustable relative to the base block, enabling dynamic adaptation to various coating thicknesses. This dynamic configuration allows the threaded hole to be positioned at the correct depth regardless of the insulating coating thickness, preserving both reliability and versatility.
2Manufacturing precision
If adjustable mounting frames are used to position blocks, then the positioning precision is improved, but the device complexity and time consumption increase
Solution Approach 1:
The positioning function is extracted from a separate adjustable mounting frame and integrated directly into the base block through pre-marked positioning holes. This eliminates the need for complex disposable frames while maintaining positioning precision, thereby reducing device complexity and installation time.
Solution Approach 2:
Positioning holes are pre-marked on the base block during manufacturing with the correct center-to-center distances. This preliminary action eliminates the need for complex adjustable frames during installation, simplifying the device while maintaining precise positioning capability.
3Strength
If threaded holes are drilled in aluminum plates, then the fixation strength is improved, but the manufacturing difficulty increases due to aluminum shavings sticking to the drill bit
Solution Approach 1:
Instead of drilling threaded holes in aluminum plates, the invention uses plastic blocks with pre-formed threaded holes molded during the molding process. This eliminates the drilling operation and associated manufacturing difficulties while providing sufficient fixation strength for lightweight loads like shutter hinges.
Solution Approach 2:
The material parameter is changed from aluminum to plastic for the base block. This material substitution eliminates the problem of aluminum shavings sticking to drill bits during threading, while the molded threaded holes provide adequate fixation strength for the intended application.
4Adaptability or versatility
If multiple sizes of fixing devices are stocked, then the adaptability to different coating thicknesses is improved, but the device complexity and inventory requirements increase
Solution Approach 1:
The fixing device is designed as a universal system where the base block remains constant and only the support element needs to be adjusted or replaced for different coating thicknesses. This multi-functionality allows a single base block design to serve multiple thickness requirements, reducing inventory complexity while maintaining adaptability.
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 system provides a versatile, reliable, and precise method for anchoring lightweight loads, adaptable to various coating thicknesses without requiring disposable frames or pre-formed holes, ensuring strong and efficient fixation.
Implementation Method 1
a chemical anchoring product injected in the said bushing in order to hold the supporting means inserted in the bushing
Data Source
Figure 1
Figure 2~2A
Figure 3
AI summary
a fixing system of lightweight loads on insulating coatings of external walls in buildings comprising: a fixing device (1) comprising a base (2) intended to be fixed to a masonry wall (m) and a support (3) that protrudes externally from the said base (2), the said fixing device (1) being covered with an insulating coating (c) applied on the said masonry wall (m), a bushing (4) intended to be inserted in a hole (f) obtained in the said insulating coating (c) and in the said support (3), and a chemical anchoring product (6) injected in the said bushing (4) to hold the said supporting means (9) inserted in the said bushing.