Flexible Tongue Locking for Floor Panels
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Solution Overview
Problem
Current mechanical locking systems for floor panels require complex installation methods involving multiple steps and often rely on friction for vertical locking, which is weak and prone to movement due to humidity changes or foot traffic, and are costly to produce.
Innovation Solution
A vertical folding locking system using a flexible tongue integrated into the panel's joint edge, which allows all sides to be locked with a simple angling action, featuring a sliding groove and locking strip design that reduces installation time and material costs, and ensures strong vertical locking without the need for tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional mechanical locking systems use friction-based vertical locking, then the locking mechanism is simple in structure, but the vertical locking strength is weak and prone to movement
Solution Approach 1:
The patent employs a flexible tongue element that can bend and deform during the locking process. This flexible component engages with a groove in the adjacent panel, creating a mechanical interlock that provides strong vertical locking while maintaining structural simplicity. The flexibility allows the tongue to snap into place and maintain constant contact pressure.
Solution Approach 2:
The locking system transitions from static friction-based holding to a dynamic snapping mechanism. The flexible tongue is designed to deform elastically during installation and then snap into a locked position, creating a more reliable mechanical connection that actively maintains locking force rather than relying on passive friction.
2Device complexity
If mechanical locking systems require multiple installation steps with tools, then the locking can be achieved with simple structures, but the installation time and complexity increase
Solution Approach 1:
The locking system is designed to be self-installing through a simple angling action. The flexible tongue automatically engages with the groove when panels are angled together, eliminating the need for separate locking operations or specialized tools. The design leverages the installation motion itself to activate the locking mechanism.
Solution Approach 2:
The patent combines the locking function with the installation motion. Instead of requiring separate steps for positioning and locking, the angling action that brings panels together simultaneously activates the flexible tongue to engage with the groove, merging two operations into one efficient motion.
3Device complexity
If locking systems rely on friction for vertical locking, then the structure remains simple, but the locking reliability decreases under humidity changes and foot traffic
Solution Approach 1:
The flexible tongue element maintains constant mechanical contact with the groove walls through its elastic deformation, creating a reliable interlock that is insensitive to humidity changes. The continuous contact pressure ensures stable locking under varying environmental conditions and mechanical loads from foot traffic.
Solution Approach 2:
The flexible tongue is designed with pre-compression or pre-tension that maintains constant contact force with the groove. This beforehand cushioning effect ensures that the locking force remains stable under varying loads, compensating for potential gaps or movements before they affect locking reliability.
4Device complexity
If traditional locking systems use separate components for horizontal and vertical locking, then the locking function is comprehensive, but the manufacturing cost increases
Solution Approach 1:
The flexible tongue serves multiple functions: it provides vertical locking through engagement with the groove, maintains constant contact pressure for reliability, and guides the panel during installation. This multi-functionality eliminates the need for separate components, reducing part count and manufacturing complexity while maintaining comprehensive locking capability.
Solution Approach 2:
The patent merges the vertical locking function with the installation guidance function into a single flexible tongue component. This integration reduces the number of separate parts that need to be manufactured and assembled, lowering production costs while achieving both vertical locking and installation ease.
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 system enables efficient, tool-free installation of all four sides of floor panels vertically and horizontally with high precision, maintaining panel alignment and stability under varying humidity conditions, while reducing production and installation costs.
Implementation Method 1
The flexible tongue is designed to be flexible so that at least one of the sides of the floor panel can be joined by a vertical motion parallel to the vertical plane
Implementation Method 2
a spring effect caused by said bending of said flexible tongue
Data Source
AI summary
Floor panels (1, 1′) are provided with a mechanical locking system including a flexible tongue (30) in a sliding groove (40) which during a vertical folding motion is displaced. Moreover, a tongue blank (50), a production method and an installation method are shown.