Floating Floor Locking System with Spring-Loaded Clip

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Solution Overview

Problem

Existing floating floor systems face challenges in maintaining large continuous surfaces without expansion joint profiles, especially with moisture-sensitive materials that exhibit significant dimensional changes due to humidity variations, leading to visible joint gaps and increased installation complexity.

Innovation Solution

A mechanical locking system for rectangular floorboards that allows for movement between boards, reducing visible joint gaps and enabling large continuous surfaces by incorporating a tongue-and-groove mechanism with a play that compensates for dimensional changes, and production equipment that enhances precision in manufacturing small floorboards with tight tolerances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional tongue and groove joints are used to join floating floorboards, then vertical locking is achieved, but horizontal locking requires glue which increases installation complexity and time

Engineering Contradiction:

Improveinstallation simplicityVSAvoidlocking system complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the traditional tongue-and-groove mechanical locking system with a clip-based locking mechanism. The clip (14) engages with a groove (12) to provide both vertical and horizontal locking in a single integrated component, eliminating the need for separate gluing operations and simplifying installation while maintaining structural integrity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The locking system combines multiple functions into a single integrated mechanism. The clip (14) simultaneously provides vertical engagement through the groove (12) and horizontal locking through its engagement with the floorboard edges, consolidating what would traditionally require separate components and operations into one unified system

Inventive Principle:

Principle #5Merging (Combining)

2Manufacturing precision

If floorboards are joined with tight mechanical locking to eliminate joint gaps, then appearance quality improves, but installation time increases due to precision requirements

Engineering Contradiction:

Improvejoint gap precisionVSAvoidinstallation time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent employs a clip (14) with a spring mechanism that applies controlled elastic force to maintain consistent locking pressure. This parameter-based approach ensures uniform joint gap closure across all floorboards without requiring ultra-precise manual alignment during installation, as the spring compensates for minor dimensional variations

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The spring-loaded clip (14) automatically adjusts and maintains optimal locking engagement as floorboards are assembled. The spring mechanism self-regulates the locking force to ensure consistent joint gap elimination without requiring precise manual adjustment or specialized tools during installation

Inventive Principle:

Principle #25Self-service

3Productivity

If mechanical locking systems are used without glue, then installation speed increases, but reliability of locking connection decreases

Engineering Contradiction:

Improveinstallation speedVSAvoidlocking connection strength

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The clip (14) incorporates a curved engagement surface that interfaces with the groove (12). This curved geometry distributes the locking force across a larger contact area rather than concentrating it at a single point, enhancing the reliability of the mechanical connection while maintaining the glue-free installation advantage

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The spring mechanism in the clip (14) is pre-loaded during manufacturing to provide immediate engagement force upon installation. This preliminary action ensures that the locking connection is established with full strength from the start, eliminating the need for additional gluing operations while maintaining reliable connection

Inventive Principle:

Principle #10Preliminary action

4Area of stationary object

If large continuous floating floor surfaces are installed, then area coverage increases, but visible joint gaps increase due to dimensional changes from humidity variations

Engineering Contradiction:

Improvecontinuous floor surface areaVSAvoidjoint gap visibility

Core Design Contradiction:

Area of stationary objectVSShape

Solution Approach 1:

The spring-loaded clip (14) creates a dynamic locking system that can accommodate dimensional changes in floorboards caused by humidity variations. As the floorboards expand or contract, the spring mechanism maintains continuous engagement with the groove (12), keeping the joint gaps closed and preventing their visibility while allowing the large continuous floor surface to move as a unified structure

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS7516588B2Floor covering and locking systems

Publication Date: 2009.04.14 VÄLINGE INNOVATION AB

AI summary

Floorboards with a mechanical locking system that allows movement between the floorboards when they are joined to form a floating floor.