Offset Leg Holding Device for Heavy Facade Cladding
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Solution Overview
Problem
Existing holding devices for attaching panel-shaped wall or ceiling cladding elements to structural substructures face challenges in achieving sufficient mechanical stability and load capacity, especially when dealing with heavy facade elements and insulation layers, while also requiring adjustable spacing and thermal separation.
Innovation Solution
A multi-part holding device with a base part and extension part, where the base part has an elongate base plate and a leg offset from its longitudinal edges, allowing central loading and connection to a holding profile, made from metallic materials like stainless steel for increased robustness and adjustability, and incorporating insulation strips for thermal separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the holding device is designed with a long overhang to bridge insulation layers and create ventilation gaps, then the adaptability to different building configurations is improved, but the mechanical stability and load capacity deteriorate due to the law of the lever
Solution Approach 1:
The holding device is divided into multiple segments: a base part with a base plate, extension parts that can be connected to the base part, and a bracket part. This segmentation allows the device to achieve long overhangs through multiple connected sections rather than a single long cantilever, distributing the structural load and improving mechanical stability while maintaining adaptability to different building configurations.
Solution Approach 2:
The leg of the base part is offset inwards relative to the longitudinal edges of the base plate, creating a T-shaped configuration rather than a simple L-shape. This dimensional arrangement allows the extension part to connect centrally to the leg, enabling substantial central loading of the base part and improving load capacity while maintaining the necessary overhang length for adaptability.
2Strength
If angular metal holding devices are used to ensure mechanical stability, then the strength is improved, but the thermal insulation performance deteriorates due to heat bridges
Solution Approach 1:
An insulating element is introduced as an intermediary component between the base part and the extension part of the holding device. This insulating element acts as a thermal barrier that breaks the heat bridge created by continuous metal contact, reducing heat transfer while allowing the mechanical connection to maintain structural stability. The insulating element is positioned at the interface where the extension part connects to the base part.
3Ease of manufacture
If the holding device is designed as a single integrated component, then the manufacturing simplicity is improved, but the adjustability of spacing deteriorates
Solution Approach 1:
The holding device is designed as separate modular components including a base part, extension parts, and a bracket part that can be connected together. This segmentation enables adjustability of spacing by selecting different combinations and configurations of extension parts while keeping each individual component relatively simple to manufacture using standard stamping and bending processes.
Solution Approach 2:
The holding device incorporates adjustable features that allow the spacing and configuration to be modified during installation. The connection between the base part and extension parts, as well as the bracket part, enables dynamic adjustment of the device's geometry to适应 different spacing requirements while maintaining manufacturing simplicity through standardized components.
Data Source
Figure 1
Figure 2a~2b
Figure 3a~4b
AI summary
The invention relates to a multi-part holding device (1) for attaching panel-shaped wall or ceiling cladding elements to a substrate provided by the building. The holding device comprises a base part (3) that can be attached to the substrate and at least one extension part (4) that can be connected to the base part (3) and that can be connected to a retaining profile (2) for receiving at least one panel-shaped wall or ceiling cladding element. The base part (3) has an elongated base plate (5) and at least one leg (6) perpendicular to it for connecting the base part (3) to the extension part (4). According to the invention, the leg (6) is arranged offset inwards relative to a first and a second longitudinal edge (5.1, 5.2) of the base plate (5). The invention further relates to a method for manufacturing such a holding device (1) and to a holding system comprising such a holding device (1) and a retaining profile (2).