Dry Screed Panel Stepped Rebate Clamping Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dry screed panels in dry construction are complex and expensive to produce, making them difficult to lay quickly, easily, and safely, and requiring additional screwing for securement.
Innovation Solution
A dry screed panel design featuring cuboid base and cover panels with offset rabbets that engage in a form-fitting manner, using sloping clamping surfaces to create a clamping region for secure adhesion without the need for screws, allowing for easy assembly and improved contact pressure through clamping and wedge effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional dry screed panels with tongue and groove and locking lugs are used, then panel connection is achieved, but the design becomes complex and expensive
Solution Approach 1:
The panel connection system is segmented into distinct functional zones: the clamping region with sloping clamping surfaces for mechanical interlocking, and the adhesive receiving zones (channel and joint) for chemical bonding. This segmentation allows each zone to perform its specific function efficiently, simplifying the overall design while maintaining connection strength.
Solution Approach 2:
The locking lug element is extracted from the design, eliminating the complex combination of tongue and groove with locking lugs. The connection is achieved through the clamping surfaces and adhesive system alone, reducing manufacturing complexity and cost while maintaining structural integrity.
2Reliability
If additional screwing is used to secure panels, then connection reliability is improved, but installation time and complexity increase
Solution Approach 1:
The mechanical clamping function and adhesive bonding function are merged into a single integrated connection system. The sloping clamping surfaces provide immediate mechanical interlocking upon panel insertion, while the adhesive receiving zones prepare the interface for chemical bonding, eliminating the need for separate screwing operations.
Solution Approach 2:
The panel connection system is self-servicing through the clamping mechanism. When panels are inserted, the sloping clamping surfaces automatically engage and lock the panels together through the clamping region, providing self-securing without requiring additional fastening operations by the installer.
3Productivity
If panels are simply placed together without interlocking features, then installation is quick, but connection strength and stability are insufficient
Solution Approach 1:
The sloping clamping surfaces are pre-configured on the panels to automatically engage and create mechanical interlocking as soon as the panels are placed together. This preliminary mechanical action occurs during the placement itself, providing immediate connection strength without requiring additional steps, thereby maintaining high installation speed.
Solution Approach 2:
The sloping clamping surfaces use angled/curved geometry rather than flat surfaces, creating a wedge-like clamping action. This curved surface design generates mechanical interlocking force through the clamping region, providing strong panel connection while allowing quick insertion and assembly.
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 enables quick, safe, and cost-effective assembly of dry screed panels, eliminating the need for screws and ensuring high adhesive force between panels, thus simplifying the installation process and enhancing panel cohesion.
Implementation Method 1
the two clamping surfaces (12; 16) lie flat against one another at least in certain areas in a clamping region (31)
Implementation Method 2
improved contact pressure through clamping and wedge effects
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a cuboid dry screed panel (1) for a subfloor (28) in dry construction, comprising a panel height direction (4), a first, flat screed panel broad side (18), in particular a screed panel bearing surface (18), a second screed panel broad side (19) opposite this in the panel height direction (4), in particular a screed panel top surface (19), and four screed panel side surfaces (20) adjoining each other in pairs, each having a stepped rebate (21a;b), wherein the dry screed panel (1) has at least one first stepped rebate (21a) and at least one complementary second stepped rebate (21b), and wherein the stepped rebates (21a;21b) each have a first rebate butt surface (22;25), a second rebate butt surface (23;26) and a rebate bearing surface (24;27) having, wherein the first fold joint surface (22) of the first step joint (21a) has a first, inclined clamping surface (12) and the complementary first fold joint surface (26) of the second step joint (21b) has a second, inclined clamping surface (16), wherein the two first fold joint surfaces (22;26) are designed such that, after joining two dry screed panels (1), the two step joints (21a;b) interlock in a form-fitting manner, - the two clamping surfaces (12;16) lie flat against each other at least partially in a clamping area (31), and - the two first fold joint surfaces (22;26) are spaced apart from each other on both sides of the clamping area (31) when viewed in the panel height direction (4), and a subfloor with such dry screed panels.;