Interlocking Panel Profiles for Low-Force Angled Uncoupling

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Solution Overview

Problem

Existing panels with vertical interlocking profiles require substantial force for uncoupling, risking damage and are cumbersome, especially during replacement or repositioning.

Innovation Solution

The panels feature mutually interacting profiles that allow coupling by vertical insertion and uncoupling by a downward angling movement, utilizing complementary shapes and coatings to reduce mechanical resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If panels are coupled by vertical insertion establishing interlocking in horizontal and vertical directions, then coupling strength and stability are improved, but uncoupling requires substantial force and risks damage

Engineering Contradiction:
Improvecoupling strengthVSAvoidease of uncoupling
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The coupling system is segmented into two distinct functional parts: vertical interlocking profiles for secure coupling and horizontal angling movement capability for easy uncoupling. The profile is divided into a coupling portion establishing vertical interlocking and a release portion enabling horizontal disengagement, allowing independent optimization of coupling strength and uncoupling ease.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of requiring vertical extraction (reverse of coupling) to uncouple the panels, the invention inverts the uncoupling mechanism by enabling horizontal angling movement. The profiles are designed to interlock vertically for coupling but allow horizontal disengagement through angling, reversing the conventional approach where uncoupling follows the reverse path of coupling.

Inventive Principle:
Principle #13The other way round (Inversion)

2Reliability

If vertical interlocking profiles are used to establish secure coupling, then coupling reliability is improved, but uncoupling becomes cumbersome and time-consuming

Engineering Contradiction:
Improvecoupling reliabilityVSAvoidtime for uncoupling
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The coupling system transitions from a static vertical interlocking mechanism to a dynamic system that accommodates both vertical coupling and horizontal uncoupling movements. The profiles are designed with geometric features that allow the connection to be rigid in the vertical direction during coupling while permitting controlled angular movement in the horizontal direction for quick release.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention adds a horizontal dimension to the uncoupling process. While coupling occurs in the vertical dimension through insertion, uncoupling is achieved by introducing horizontal angling movement. This dimensional transition allows the profiles to disengage without requiring reverse vertical extraction, significantly reducing uncoupling time.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If substantial force is applied to extract panels vertically, then uncoupling can be achieved, but damage risk to profiles increases

Engineering Contradiction:
Improveuncoupling capabilityVSAvoidprofile integrity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The invention replaces the mechanical extraction system (vertical force application) with an angular disengagement system. Instead of applying substantial vertical force to overcome interlocking, the profiles are designed to release through controlled horizontal angling movement, substituting high-force linear extraction with low-force rotational/displacement motion.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention changes the operational parameters of uncoupling from high-force vertical extraction to low-force horizontal angling. By modifying the direction and magnitude of the applied force (from substantial vertical force to minimal horizontal displacement), the system achieves uncoupling while preserving profile integrity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP4726143A2Panel and method of uncoupling two interconnected panels
Publication Date: 2026.04.15 I4F LICENSING NV
  • EP4726143A2 patent drawingFigure 1~3
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  • EP4726143A2 patent drawingFigure 5~6

AI summary

The present invention relates to a panel suitable as a floor, ceiling or wall panel, which panel is of a planar design having an upper side, a bottom side and side edges. Furthermore, the invention relates to a covering comprising a plurality of interconnected panels according to the invention. The invention also relates to a method of uncoupling two (or more) interconnected panels.