Coupling Profile With Visible Joint for Fire-Safe Facade Panels

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Solution Overview

Problem

Existing coupling systems for symmetric tongue-and-groove panels lack flexibility in accommodating different panel designs and do not effectively address fire safety and visual aesthetics, particularly in facade cladding applications.

Innovation Solution

A coupling profile with a tongue-receiving part and a groove-receiving part that creates a visible joint and includes a filling strip to provide spacing between panels, enhancing fire safety and visual differentiation, while accommodating various panel types, including those made from polymer materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If coupling systems are designed for symmetric panels only, then the coupling mechanism is simple, but the adaptability to different panel designs is poor

Engineering Contradiction:
Improveadaptability to different panel designsVSAvoidcoupling profile structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The coupling profile is designed with a universal structure that can accommodate both symmetric and asymmetric tongue-and-groove panels. The profile includes a groove-receiving part and a tongue-receiving part that can adapt to different panel configurations, making a single coupling type suitable for multiple panel designs and materials including polymer extruded panels.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If panels are placed directly adjacent without spacing, then the number of panels required is minimized, but fire safety is compromised

Engineering Contradiction:
Improvefire safetyVSAvoidnumber of panels required
Core Design Contradiction:
Object-affected harmful factorsVSQuantity of substance

Solution Approach 1:

The coupling profile acts as an intermediary element between adjacent panels, creating a controlled spacing gap. This gap serves as a fire barrier while the coupling profile itself maintains the structural connection. The profile includes a filling strip that can provide visual continuity while maintaining the safety spacing, thus mediating between aesthetic requirements and fire safety.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If the joint between panels has the same color and surface structure as the panel, then the visual appearance is uniform, but visual distinction and aesthetic appeal are reduced

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidvisual appearance
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The coupling profile incorporates a filling strip with different color and/or surface structure compared to the main panel surfaces. This creates a deliberate visual distinction at the joint area, transforming what would normally be a hidden connection element into a visible aesthetic feature. The local quality change enhances visual appeal while the coupling profile maintains structural functionality.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4711550A1Coupling profile for coupling tongue-and-groove panels
Publication Date: 2026.03.18 HEERING KUNSTSTOF PROFIELEN
  • EP4711550A1 patent drawingFigure 1
  • EP4711550A1 patent drawingFigure 2
  • EP4711550A1 patent drawingFigure 3

AI summary

The invention provides a coupling profile for coupling tongue-and-groove panels along their longitudinal sides, the coupling profile having a tongue side and a groove side, wherein said tongue side comprises a tongue-receiving part adapted to engage the tongue of a first tongue-and-groove panel, the groove side comprises a groove-receiving part adapted to engage the groove of a second tongue-and-groove panel, the tongue-receiving part and the groove-receiving part in transverse direction set apart for providing a panel spacing between the first and second tongue-and-groove panel, and the coupling profile further comprising a filling strip for filling said panel spacing for providing a visible joint between the first and second tongue-and-groove panels.