Panel Locking Tongue Mechanism for Low-Friction Vertical Unlocking
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Solution Overview
Problem
Existing mechanical locking systems for panels, such as those described in WO2014/209213, face challenges in ease of assembly and disassembly, particularly due to manufacturing tolerances and the need for precise machining of edges.
Innovation Solution
A mechanical locking system for panels featuring a displaceable tongue with a displacement groove and an elongated element that allows for vertical unlocking, where the tongue is displaced along a specific axis to engage with a tongue groove for locking and can be unlocked by an elongated element inserted into an unlocking groove, facilitating linear translation and reducing frictional forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical locking system with a displaceable tongue is used for vertical locking of panels, then the locking reliability is improved, but the manufacturing precision requirements for edge portions increase
Solution Approach 1:
The patent introduces an intermediary element (the displaceable tongue with second portion) that mediates between the locking mechanism and the panel edge. This intermediary absorbs manufacturing tolerances by being displaceable within the displacement groove, allowing the tongue to self-adjust its position while maintaining reliable locking engagement.
Solution Approach 2:
The patent changes the positional parameter of the tongue's second portion by allowing it to displace within the displacement groove. This parameter change enables the system to accommodate variations in edge portion dimensions while maintaining consistent locking performance, thereby reducing manufacturing precision requirements.
2Reliability
If a known unlocking system is used, then the locking mechanism functions adequately, but the ease of disassembly is reduced due to frictional forces and complex machining requirements
Solution Approach 1:
The patent extracts the unlocking function from the traditional tongue-groove interface by introducing a separate elongated element that inserts into a dedicated unlocking groove. This separation allows the unlocking mechanism to operate independently with reduced friction, as the elongated element can be designed with specific geometric features that minimize contact resistance during disassembly.
Solution Approach 2:
The patent adds a new dimensional aspect to the unlocking mechanism by introducing the elongated element that operates in a different spatial dimension than the primary locking tongue. The elongated element engages with the tongue through the unlocking groove, creating a multi-dimensional unlocking action that reduces frictional forces compared to traditional single-plane unlocking systems.
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 enhances the ease of assembly and disassembly of panels by minimizing manufacturing tolerances and reducing the cost and complexity of producing the locking mechanism, while ensuring reliable unlocking with minimal friction.
Implementation Method 1
The tongue is pushed into the displacement groove during a vertical assembling of the panels and springs back into the tongue groove of an adjacent second panel when the panels have reached a locked position
Data Source
AI summary
A set of essentially identical panels, such as building panels, provided with a mechanical locking system including a displaceable tongue arranged in a displacement groove having a first opening at a first edge of a first panel. The tongue is configured to be displaced in the displacement groove along a displacement axis to attain a locking state wherein a first portion of the tongue cooperates with a first tongue groove having a second opening at a second edge of an adjacent second panel, for vertical locking of the first and the second edge. A second portion of the tongue is configured to cooperate with the second edge of the adjacent second panel via an elongated element for vertical unlocking of the first and the second edge.