Fold-Down Floor Panel Coupling for Stronger Locking
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Solution Overview
Problem
Existing floor panels with integral coupling parts face a compromise between connection strength and ease of installation, with solutions like elastic locking strips being costly and integral coupling profiles offering insufficient resistance or requiring damaging installation.
Innovation Solution
The floor panels incorporate specific structural properties and material characteristics in their coupling parts, featuring vertically and horizontally active locking systems with angled contact faces and pretension mechanisms to ensure strong connections while facilitating easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate elastic locking strips are used to achieve vertical interlock, then connection strength is improved, but production cost increases
Solution Approach 1:
The patent combines the vertical locking function and horizontal locking function into a single integrated coupling profile that is extruded as one piece. This eliminates the need for separate elastic locking strips while maintaining both vertical and horizontal interlock capabilities, thereby reducing production cost while preserving connection strength.
Solution Approach 2:
The integral coupling profile performs multiple functions simultaneously: it provides vertical locking through its downwardly pointing locking element, horizontal locking through its upwardly pointing locking element, and structural support through its lip configuration. This multi-functionality replaces what would traditionally require multiple separate components.
2Ease of manufacture
If integral coupling profiles are used to reduce cost, then production cost decreases, but connection strength becomes insufficient
Solution Approach 1:
The coupling profile is segmented into distinct functional zones: a vertical locking zone with downwardly pointing elements, a horizontal locking zone with upwardly pointing elements, and support lips. This segmentation allows each zone to be optimized for its specific function while being manufactured as an integral piece, achieving both cost efficiency and adequate connection strength.
Solution Approach 2:
The patent optimizes geometric parameters of the coupling profile including the angles of contact faces, the dimensions of locking elements, and the positioning of support lips. These parameter changes enable the integral profile to achieve sufficient connection strength through carefully designed mechanical geometry rather than relying on separate reinforced components.
3Strength
If coupling is made too stiff to ensure connection strength, then connection strength is improved, but ease of installation deteriorates
Solution Approach 1:
The coupling profile incorporates dynamic elements including elastically deformable locking parts that can flex during installation and then lock into place. The downwardly pointing locking element can deform to allow panel insertion, then springs into a locked position, providing both ease of installation and strong final connection.
Solution Approach 2:
The coupling profile is pre-configured with built-in flexibility and deformation capacity in its locking elements. This preliminary design allows the coupling to accommodate installation movements without requiring external adjustment or damage, enabling easy installation while maintaining strong connection upon completion.
4Ease of operation
If coupling offers little resistance to unlocking for easy installation, then ease of installation is improved, but connection strength deteriorates
Solution Approach 1:
The coupling profile features nested locking mechanisms where the downwardly pointing locking element engages with a corresponding recess in the adjacent panel, and the upwardly pointing locking element engages with a recess in the panel below. This nested configuration creates multiple interlocking points that provide both ease of initial engagement and strong resistance to unlocking.
Solution Approach 2:
The coupling design incorporates built-in mechanical resistance through its geometry and material properties that prevent unintended unlocking. The locking elements are designed to require deliberate force to disengage, while still allowing easy installation through controlled deformation during the folding-down process.
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 provides a balance between robust coupling strength and simplified installation, reducing production costs and minimizing installation damage.
Implementation Method 1
the downwardly pointing locking element makes contact with the upwardly pointing locking element, wherein this contact on the upwardly pointing locking element is located above said contact faces
Implementation Method 2
these contact faces are at least situated on the half of said female coupling part which is located closest to the upwardly pointing locking element
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
A floor panel (1) for forming a floor covering wherein the floor panels are provided with coupling parts (8, 9) on at least one pair of edges (4, 5), that these coupling parts are made mainly of the material of the floor panel, and that these coupling parts are configured such that two of such floor panels can be installed and locked together at said pair of edges via a downward movement and/ or via the fold-down principle.