Locking system and flooring board

E - Fixed Constructions – 04 – F

Patent

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Details

E04F 15/04 (2006.01)

Patent

CA 2333962

The invention relates to a locking system for mechanical joining of floorboards (1, 1'). For horizontal mechanical joining there is a projecting portion (P) with a locking element (8) which cooperates with a locking groove (14) in an adjacent board (1'). A tongue-and-groove joint (36, 38) for vertical mechanical joining has cooperating upper abutment surfaces (43, 49) and cooperating lower abutment surfaces (45, 52) which are essentially parallel with the principal plane of the floorboards (1) and of which the lower abutment surfaces (45, 52) are positioned essentially outside the outer vertical plane (OP), i.e. displaced relative to the upper abutment surfaces. The tongue (38) is movable at an angle into the groove (36) and the locking element (8) is insertable into the locking groove (14) by mutual angular movement of the boards (1, 1') about the joint edges (4a, 4b). In the joined state, the cooperating upper abutment surfaces (43, 49) are limited horizontally inwards from the joint edge and outwards to the joint edge by an inner vertical plane (IP) and an outer vertical plane (OP), respectively. In the joined state there is between said vertical planes (IP, OP) and under the tongue (38) a space (S), which extends horizontally from the inner vertical plane (IP) and at least halfway to the outer vertical plane (OP). Such a space can also be formed during a final phase of the inwards angling.

L'invention concerne un système de blocage destiné à l'assemblage mécanique de lattes de parquet (1, 1'). Pour l'assemblage horizontal, une partie saillante (P) dotée d'un élément de blocage (8) coopère avec une rainure de blocage (14) d'une latte adjacente (1'). Un assemblage languette/rainure (36, 38) destiné à un assemblage mécanique vertical comporte des surfaces d'appui supérieures coopérantes (43, 49) et des surfaces d'appui inférieures coopérantes (45, 52) qui sont sensiblement parallèles au plan principal des lattes (1). Les surfaces d'appui inférieures (45, 52) sont placées principalement en dehors du plan vertical extérieur (OP), notamment en décalage par rapport aux surfaces verticales supérieures. La languette (38) peut être soumise à un déplacement angulaire dans la rainure (36) et l'élément de blocage (8) peut être inséré dans la rainure (14) par mouvement angulaire mutuel des lattes (1, 1') autour des rebords de pièces (4a, 4b). Dans l'état assemblé, les surfaces d'appui supérieures coopérantes (43, 49) sont limitées horizontalement vers l'intérieur à partir du rebord de joint et vers l'extérieur jusqu'au rebord par un plan vertical interne (IP) et respectivement par un plan vertical externe (OP). Dans l'état assemblé, un espace (S), situé entre ces plans verticaux (IP, OP) et sous la languette (38), s'étend horizontalement à partir du plan vertical interne (IP) et au moins à mi-parcours jusqu'au plan vertical externe (OP). Un tel espace peut également être formé pendant une phase finale de déplacement angulaire vers l'intérieur.

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