Foldable Drywall Corner Element With Elastic Displacement Absorption
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Solution Overview
Problem
Existing prefabricated components for dry construction, particularly for forming inside corners, are prone to displacement issues in substructures, leading to damage and optical defects like cracks in the paper top layer and gypsum boards, especially in roof trusses.
Innovation Solution
A prefabricated component featuring elastically deformable connecting elements and stabilizing strips that can fold to form inside corners, with end sections perpendicular to the building board plane to prevent plaster material breakage and ensure secure attachment, using thermoplastic elastomers and insertion grooves for secure fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the two building board sections are connected only by the paper cover layer, then the structure is simple, but displacements in the substructure cause tearing of the paper top layer and damage to the building boards
Solution Approach 1:
The connection system is segmented into multiple functional components: stabilizing strips embedded in the building boards, a connecting element with attachment portions, and a deformable connecting portion. This segmentation allows each component to perform its specific function - the stabilizing strips provide rigid attachment points, the connecting element transfers forces, and the deformable portion absorbs displacement through elastic deformation, preventing damage to the building boards.
Solution Approach 2:
The deformable connecting portion is designed to absorb displacement forces before they can damage the building boards or paper layers. By providing this cushioning element in advance, the system preemptively handles substructure displacements, preventing tearing and damage that would occur in simpler connected designs.
2Ease of operation
If the stabilizing strips are attached at an angle of attack, then installation space is created, but acute-angled plaster cross-sections form that tend to break out
Solution Approach 1:
The stabilizing strips have different geometric properties at different locations. The main body is angled to provide installation space and facilitate folding, while the end sections are perpendicular to create stable, non-acute cross-sections. This local differentiation of geometric quality allows the system to simultaneously achieve ease of installation and prevention of plaster breakage.
Solution Approach 2:
Instead of having the entire stabilizing strip angled, the design inverts the approach by making the critical end sections perpendicular while the main body remains angled. This inversion of the geometric property at the critical location prevents the formation of acute-angled plaster cross-sections that would break out, while maintaining the installation space benefits of the angled configuration.
3Stability of the object's composition
If a rigid connecting element is used, then structural stability is achieved, but substructure displacements cause cracks and optical defects
Solution Approach 1:
The connecting element transitions from a purely rigid structure to a dynamic system with elastic degrees of freedom. The deformable connecting portion can dynamically adjust its shape through elastic deformation to accommodate substructure displacements, maintaining structural stability while preventing the formation of cracks and optical defects that would result from rigid constraints.
Solution Approach 2:
The connecting element's mechanical parameters are changed by incorporating a deformable portion with different stiffness characteristics. This parameter change allows the system to maintain stability under normal conditions while accommodating displacement forces through elastic deformation, preventing damage that would occur with purely rigid connections.
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 prevents the tearing of the paper top layer and reduces the formation of cracks, ensuring a stress-free attachment and maintaining the integrity of the drywall corners, thus enhancing the durability and aesthetic quality of the construction.
Implementation Method 1
the two stabilizing strips are connected to an elastically deformable connecting element to form an inside corner of a dry construction. This elastically deformable connecting element ensures that shifts in the substructure do not tear the paper top layer.
Data Source
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AI summary
The invention relates to a prefabricated building element (03) for creating room corners in drywall construction with a building panel (05) made of gypsum board, gypsum fibers or wood-based materials, which has a recess (09) facing a rear side (08), wherein a right and a left building panel section (10, 11) adjoin the recess (09), and wherein the building panel sections (10, 11) are foldable relative to each other, and wherein a right and a left stabilizing strip (01, 02) are provided, and wherein the stabilizing strips (01, 02) are each attached to a building panel section (10, 11) within the recess (09), and wherein the two stabilizing strips (01, 02) are connected with an elastically deformable connecting element (04).