Inclined Contact Surfaces for Floating Floor Panel Locking
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Solution Overview
Problem
Existing panel locking mechanisms for floating floor coverings suffer from vertical offset issues, leading to wear and weakened cohesion between locked panel edges, as the panel surface with a spring for vertical locking can drop below its initial level, causing design flaws and increased wear.
Innovation Solution
The complementary holding profiles are configured for a pivotal movement, creating a closed butt joint with inclined contact surfaces, where the maximum spacing between lower abutment surfaces defines the movement scope, ensuring the panels remain securely locked and aligned, with the upper contact surfaces arranged parallel to each other for snug fit and reduced gap visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring is used for vertical locking in panel edges, then vertical locking force is improved, but the panel surface drops below its initial level causing wear and weakened cohesion
Solution Approach 1:
Instead of using a spring that pushes upward to maintain panel level, the invention inverts the approach by using inclined contact surfaces that naturally guide panels into proper alignment through gravitational and mechanical contact forces. The inclined surfaces at the panel edges create a self-aligning mechanism where panels lock vertically without requiring a spring that would cause surface depression.
Solution Approach 2:
The invention uses inclined planar surfaces that act as wedge-shaped guiding surfaces. These inclined surfaces create a mechanical advantage where small horizontal movements translate into vertical locking forces, eliminating the need for springs that deform and cause panel surface depression while maintaining reliable vertical locking.
2Strength
If panels are locked with a rigid locking mechanism, then locking strength is improved, but the panels cannot expand or shrink freely causing stress and potential damage
Solution Approach 1:
The locking mechanism transitions from a static rigid connection to a dynamic system where inclined contact surfaces allow controlled movement. The panels can expand and shrink along the incline of the contact surfaces while maintaining locking engagement, converting thermal expansion and contraction forces into harmless sliding movements rather than stress buildup.
Solution Approach 2:
The invention changes the geometric parameters of the locking interface by using inclined surfaces instead of perpendicular rigid joints. This angular configuration allows the locking mechanism to accommodate dimensional changes in panel length while maintaining vertical locking strength, as the inclined surfaces provide both mechanical interlocking and movement tolerance.
3Ease of manufacture
If the butt joint is flat and level with the panel surface, then manufacturing simplicity is improved, but gaps between panels are clearly visible reducing aesthetic quality
Solution Approach 1:
The invention introduces asymmetry at the panel edges by creating inclined contact surfaces that form a V-shaped joint configuration. This asymmetric geometry causes gaps to occur at the deepest point of the V-shape rather than at the surface level, making them invisible from above while maintaining simple manufacturing processes for creating the inclined surfaces.
Solution Approach 2:
The invention moves the gap location from the two-dimensional panel surface to the third dimension by creating a V-shaped groove. Gaps that would normally be visible on the flat panel surface are redirected into the depth of the V-groove, where they become hidden from typical viewing angles while the inclined surfaces remain simple to manufacture.
4Ease of operation
If the locking mechanism allows horizontal movement for panel adjustment, then ease of installation is improved, but play or looseness develops reducing locking precision
Solution Approach 1:
The locking mechanism uses dynamic inclined surfaces that provide controlled movement during installation but automatically transition to a precise locked position. The inclined contact surfaces allow horizontal adjustment forces to move panels into place, then the geometry of the inclines creates mechanical interlocking that eliminates play while maintaining the ability to accommodate thermal expansion and contraction.
Data Source
AI summary
A panel having at least one pair of complementary locking elements at mutually opposite panel edges, wherein the locking elements are in the form of positively locking holding profiles with a locking groove and with a complementary locking tongue respectively, wherein at least at the edge of one of the holding profiles the panel surface has an edge break portion, with the proviso that that holding profile which is provided with the edge break portion is provided with an upper contact surface beneath the edge break portion and the complementary holding profile is provided with a complementary upper contact surface which is arranged substantially parallel thereto, and wherein a butt joint can be produced by the two contact surfaces in contact with each other, wherein the butt joint is inclined relative to the panel surface and for that purpose one of the contact surfaces is associated with a tongue and is inclined downwardly in the direction of the free end of the tongue in question and the complementary upper contact surface is associated with a groove and is inclined downwardly in the direction of the bottom of the groove in question.