Composed element, multi-layered board and panel-shaped element for forming this composed element

1. A composed element, the composed element being a wall covering having a front side, comprising at least two panel-shaped elements which are formed from a board material, wherein the panel-shaped elements are interconnectable in a plane by means of coupling means comprising a tongue and a groove made as profiled parts in the board material, wherein said coupling means also comprise locking elements including a tongue locking element and a groove locking element, which, in a coupled condition, prevent the moving apart of the tongue and groove and wherein the panel-shaped elements possess a covering at first and second opposed sides, said covering being performed in the form of a laminate, a foil or a lacquer layer wherein the panel-shaped elements have a front side and a rear side, the front side of the panel-shaped elements forming said front side of the wall covering;

wherein the coupling means and locking elements allow coupling the panel-shaped elements by means of a turning movement;

wherein the tongue locking element is only present at a first side of the tongue, whereas a second side of the tongue is free from the locking elements;

wherein the groove is bordered by first and second lips, the first lip protruding beyond the second lip;

wherein the tongue locking element at the first side of the tongue cooperates, in the coupled condition, with the groove locking element at the first lip, and wherein the second side of the tongue cooperates, in the coupled condition, with the second lip;

wherein said second lip has a distal end defining a theoretical closing plane in which the panel-shaped elements fit together, said closing plane being defined as a plane perpendicular to the front side of said wall covering and extending through said distal end of the second lip;

wherein the tongue locking element and the groove locking element have locking surfaces at which the tongue locking element and groove locking element contact each other when coupled;

wherein the locking surface of the groove locking element is positioned at a location distally beyond the distal end of the second lip;

wherein the locking surface of the groove locking element extends between a first contact point and a second contact point, the second contact point being closer to the front side of the panel-shaped elements than the first contact point;

wherein said second contact point defines a first distance between said second contact point and the closing plane, measured perpendicular to the closing plane;

wherein the tongue in the coupled condition defines a second distance as the distance between said closing plane and the most distal end of the tongue;

wherein said first distance is larger than said second distance;

wherein the tongue locking element is formed by a protrusion at said first side of the tongue, said protrusion comprising a proximal side surface, a distal side surface and a central portion, wherein the proximal side surface includes said locking surface of the tongue and wherein the central portion is formed by the portion of the protrusion that is located most distant from said front side of the wall covering, the central portion forming a portion of the tongue most distant from the front side;

wherein in the coupled condition a clearance is present distally in front of said distal side surface of the protrusion wherein said second lip has a first side bordering said groove and a second side opposite to the first side, the second side of the first lip comprising a portion that is spaced inward with respect to the rear side of the corresponding panel-shaped element, said spaced inward portion at extending up to the distal end of the first lip; wherein a portion of the rear side of the panel lacking the spaced inward portion extends up to the closing plane.

2. The composed element of claim 1 , wherein the coupling means are configured such that the panel-shaped elements match into each other with a pretension, which provides for that the panel-shaped elements in coupled condition are drawn towards each other.

3. The composed element of claim 1 , wherein the covering is performed in the form of a laminate of the HPL or DPL type.

4. The composed element of claim 1 , wherein the panel-shaped elements are realized from board material of pressed and consolidated wood components.

5. The composed element of claim 4 , wherein the panel-shaped elements are realized from particle board.

6. The composed element of claim 4 , wherein the panel-shaped elements are realized from MDF or HDF.

7. The composed element of claim 1 , wherein the tongue and groove as well as the locking elements are made in one piece as profiled parts in the board material.