Single-Type Panel Coupling Profiles for Herringbone Installation

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Solution Overview

Problem

Existing panel installation systems require multiple types of panels and complex manufacturing processes to achieve herringbone patterns, leading to increased costs, complexity, and reduced productivity.

Innovation Solution

A panel design with three profiles - groove-tongue, groove, and groove-double tongue - allows for installation in complex patterns like herringbone using only one type of panel, ensuring efficient locking and simplified manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple types of panels are used to achieve herringbone patterns, then installation flexibility is improved, but stockkeeping complexity and installation costs increase

Engineering Contradiction:
Improveinstallation pattern flexibilityVSAvoidstockkeeping complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The panel is designed with four identical coupling edges, each capable of functioning as either a tongue or a groove depending on the installation orientation. This universal design allows the same panel type to be used in parallel, herringbone, and diagonal patterns without requiring multiple panel variants, thereby reducing stockkeeping complexity while maintaining installation flexibility.

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

2Adaptability or versatility

If complex edge profiles are created to enable herringbone installation, then installation pattern capability is improved, but manufacturing complexity and productivity increase

Engineering Contradiction:
Improveherringbone installation capabilityVSAvoidpanel production speed
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The coupling edge is segmented into distinct functional zones: a bearing surface for load transfer, a locking surface for vertical engagement, and a groove for lateral retention. This segmentation allows each zone to be optimized independently using standard profiling operations, simplifying the manufacturing process while enabling complex installation patterns.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling edges are pre-profiled during panel manufacturing with all necessary geometric features (bearing surfaces, locking surfaces, grooves) already formed. This preliminary action eliminates the need for on-site modification or complex assembly operations, thereby maintaining high production speed while enabling herringbone installation capability.

Inventive Principle:
Principle #10Preliminary action

3Ease of manufacture

If standard tongue and groove profiles are used on all edges, then manufacturing simplicity is improved, but installation pattern flexibility deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidinstallation pattern variety
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

While all four edges of the panel have identical profiles, the asymmetric orientation of these edges relative to the panel geometry enables different installation patterns. The coupling edge design includes asymmetric features (tongue positioned at one end, groove at the other) that allow the same profile to function differently depending on which edge is being installed, thereby achieving pattern flexibility without compromising manufacturing simplicity.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentEP4257775B1panel
Publication Date: 2025.07.09 ESCHLBECK FRANZ
  • EP4257775B1 patent drawingFigure 1~2
  • EP4257775B1 patent drawingFigure 3~5
  • EP4257775B1 patent drawingFigure 6~8

AI summary

A rectangular panel comprises four edges each provided with continuous coupling profiles. The coupling profiles enable to couple a plurality of such panels. The panels and the coupling profiles are configured such that only one type of panel is required to install the panels in herringbone configuration.