Joining system and method for floor boards and boards therefor

Abstract

The invention relates to a joining system and method for floorboards, e.g. for parquetry. The joining system comprises floor boards intended to be joined with each other, wherein a first board (A) has a protrusion fitting into a recess in a second board (B). The protrusion on the first board comprises hooks ( 1 ) with intermediate slots ( 2 ) or chamfers. The recess ( 11 ) in the second board (B) is delimited on the top side by a solid edge ( 3 ), and on the bottom side by an edge having heads ( 4 ) dimensioned to be inserted through the slots ( 2 ) of the first board (A). The invention will replace the traditional groove and tenon technique. By providing slots or chamfers in the protrusion corresponding to the tenon, and corresponding cuts in the lower limiting edge of the groove, the boards can be joined in a substantially vertical or transversal movement and then be locked by a horizontal movement in the longitudinal direction of the boards. At the same time, the protrusion is shaped like hooks engaging the groove. Hereby, the joining will be very simple to perform, whilst at the same time providing a strong joint.

1 . A joining system for floor boards, comprising boards intended to be joined with each other, wherein a first board has a protrusion fitting into a recess in a second board, wherein said protrusion on the first board comprises hooks with intermediate slots; and said recess in the second board being delimited on the top side by a solid edge; and on the bottom side by an edge having heads; said hooks on the first board being dimensioned to be able to pass between the heads on the second board.  
     
     
         2 . A joining system according to  claim 1 , wherein the hooks exhibit profiled top sides; and the solid edge having a correspondingly profiled underside.  
     
     
         3 . A joining system according to  claim 2 , wherein the top side of the hooks is configured with a straight angled top; and the solid edge is configured with a correspondingly shaped downwardly facing inner side.  
     
     
         4 . A joining system according to  claim 2 , wherein the top side of the hooks is configured with a flat top; and the solid edge is configured with a correspondingly shaped downwardly facing inner side.  
     
     
         5 . A joining system according to  claim 2 , wherein the lower side of the hooks is configured with a projection; and the solid edge is configured with a correspondingly shaped upwardly facing inner side.  
     
     
         6 . A joining system according to  claim 1 , wherein the bottom edge of said recess exhibits shoulders between the heads.  
     
     
         7 . A joining system according to  claim 6 , wherein said shoulders have a rounded upper edge.  
     
     
         8 . A joining system according to  claim 1 , wherein the hooks, the slots and the heads have substantially the same size in the longitudinal direction of the boards.  
     
     
         9 . The joining system according to  claim 8 , wherein the heads are slightly narrower than the slots.  
     
     
         10 . A joining system according to  claim 1 , wherein the short sides of the boards are provided with grooves and tenons fitting into each other.  
     
     
         11 . A board for a joining system, having a protrusion on a first long side of the board and a recess on a second long side of the board, said protrusion fitting into said recess, wherein said protrusion on said first long side comprises hooks with intermediate slots; and said recess in said second long side being delimited on the top side by a solid edge, and on the bottom side by an edge having heads, said hooks being dimensioned to be able to be pass between heads on another identical board, thus allowing identical such boards to be joined with each other.  
     
     
         12 . A board according to  claim 11 , wherein the hooks exhibit profiled top sides and by the solid edge having a correspondingly profiled underside.  
     
     
         13 . A board according to  claim 12 , wherein the top side of the hooks is configured with a straight angled top; and the solid edge is configured with a correspondingly shaped downwardly facing inner side.  
     
     
         14 . A board according to  claim 12 , wherein the top side of the hooks is configured with a flat top; and the solid edge is configured with a correspondingly shaped downwardly facing inner side.  
     
     
         15 . A board according to  claim 12 , wherein the lower side of the hooks is configured with a projection; and the solid edge is configured with a correspondingly shaped upwardly facing inner side.  
     
     
         16 . A board according to  claim 11 , wherein the bottom edge of said recess exhibits shoulders between the heads.  
     
     
         17 . A board according to  claim 16 , wherein said shoulders have a rounded upper edge.  
     
     
         18 . A board according to  claim 11 , wherein the hooks, the slots and the heads have substantially the same size in the longitudinal direction of the boards.  
     
     
         19 . A board according to  claim 18 , wherein the heads are slightly narrower than the slots.  
     
     
         20 . A board according to  claim 11 , wherein the short sides of the boards are provided with grooves and tenons, allowing identical such boards to be joined with each other.  
     
     
         21 . A joining system for floor boards, comprising boards intended to be joined with each other, wherein a first board has a protrusion fitting into a recess in a second board, wherein said protrusion on the first board having chamfers with intermediate hook-shaped portions and having a solid top edge; and said recess in the second board being delimited on the top side by a solid edge; and on the bottom side by an edge having heads; said hook-shaped portions on the first board being dimensioned to be able to pass between the heads on the second board.  
     
     
         22 . A joining system according to  claim 21 , wherein the hook-shaped portions exhibit profiled top sides; and the solid edge of the recess having a correspondingly profiled underside.  
     
     
         23 . A joining system according to  claim 22 , wherein the top side of the hooks is configured with a flat top; and the solid edge of the recess is configured with a correspondingly shaped downwardly facing inner side.  
     
     
         24 . A joining system according to  claim 22 , wherein the lower side of the hooks is configured with a projection; and the solid edge of the recess is configured with a correspondingly shaped upwardly facing inner side.  
     
     
         25 . A joining system according to  claim 21 , wherein the bottom edge of said recess exhibits shoulders between the heads.  
     
     
         26 . A joining system according to  claim 25 , wherein said shoulders have a rounded upper edge.  
     
     
         27 . A joining system according to  claim 21 , wherein the hook-shaped portions, the camfers and the heads have substantially the same size in the longitudinal direction of the boards.  
     
     
         28 . The joining system according to  claim 27 , wherein the heads are slightly narrower than the chamfers.  
     
     
         29 . A joining system according to  claim 21 , wherein the short sides of the boards are provided with grooves and tenons fitting into each other.  
     
     
         30 . A board for a joining system, having a protrusion on a first long side of the board and a recess on a second long side of the board, said protrusion fitting into said recess, wherein said protrusion on said first long side comprises chamfers with intermediate hook-shaped portions; and said recess in said second long side being delimited on the top side by a solid edge, and on the bottom side by an edge having heads, said hook-shaped portions being dimensioned to be able to be pass between heads on another identical board, thus allowing identical such boards to be joined with each other.  
     
     
         31 . A board according to  claim 30 , wherein the protrusion exhibits a profiled top side and by the solid edge of the recess having a correspondingly profiled underside.  
     
     
         32 . A board according to  claim 31 , wherein the top side of the protrusion is configured with a flat top; and the solid edge is configured with a correspondingly shaped downwardly facing inner side.  
     
     
         33 . A board according to  claim 30 , wherein the lower side of the hook-shaped portions is configured with a projection; and the solid edge of the recess is configured with a correspondingly shaped upwardly facing inner side.  
     
     
         34 . A board according to  claim 30 , wherein the bottom edge of said recess exhibits shoulders between the heads.  
     
     
         35 . A board according to  claim 34 , wherein said shoulders have a rounded upper edge.  
     
     
         36 . A board according to  claim 30 , wherein the hook-shaped portions, the chamfers and the heads have substantially the same size in the longitudinal direction of the board.  
     
     
         37 . A board according to  claim 36 , wherein the heads are slightly narrower than the chamfers.  
     
     
         38 . A board according to  claim 30 , wherein the short sides of the boards are provided with grooves and tenons, allowing identical such boards to be joined with each other.  
     
     
         39 . A method of joining floor boards, utilizing boards intended to be joined with each other, wherein a first board has a protrusion fitting into a recess in a second board, said protrusion on the first board comprising hooks with intermediate slots; and said recess in the second board being delimited on the top side by a solid edge; and on the bottom side by an edge having heads and shoulders between the heads; said hooks on the first board being dimensioned to be able to pass between the heads on the second board, comprising the steps of: 
 when the first board is laid in place and to be joined with the second board, fitting the second board from above in such a way that the heads will pass through the slots of the first board;    angling the second board somewhat, and holding it at an appropriate distance from the first board, so that the shoulders will be allowed to pass the hooks;    moving the second board downwards until, the solid edge of the second board abuts the top side of the hooks;    pushing the shoulders under the hooks through pivoting and pushing the two boards together; displacing the second board longitudinally.    
     
     
         40 . A method of joining floor boards according to  claim 39 , wherein the joint is reinforced by glue, applied to the top side of the hooks before mounting the second board.  
     
     
         41 . A method of joining floor boards, utilizing boards intended to be joined with each other, wherein a first board has a protrusion fitting into a recess in a second board, said protrusion on the first board comprising hooks with intermediate slots; and said recess in the second board being delimited on the top side by a solid edge; and on the bottom side by an edge having heads and shoulders between the heads; said hooks on the first board being dimensioned to be able to pass between the heads on the second board, comprising the steps of: 
 when the first board is laid in place and to be joined with the second board, laying the second board on the existing ground next to the first board in such a way that the heads are located straight in front of the slots of the first board and the hooks straight in front of the shoulders;    pushing the boards together so that the hooks pass under the solid edge, past the shoulders and into the recess;    displacing the second board longitudinally.    
     
     
         42 . A method of joining floor boards according to  claim 41 , wherein the joint is reinforced by glue, applied to the top side of the hooks before mounting the second board.  
     
     
         43 . A method of joining floor boards, utilizing boards intended to be joined with each other, wherein a first board has a protrusion fitting into a recess in a second board, said protrusion on the first board comprising chamfers with intermediate hook-shaped portions; and said recess in the second board being delimited on the top side by a solid edge; and on the bottom side by an edge having heads and shoulders between the heads; said hook-shaped portions on the first board being dimensioned to be able to pass between the heads on the second board, comprising the steps of: 
 when the first board is laid in place and to be joined with the second board, laying the second board on the existing ground next to the first board in such a way that the heads are located straight in front of the chamfers of the first board and the hook-shaped portions straight in front of the shoulders;    pushing the boards together so that the hook-shaped portions pass under the solid edge, past the shoulders and into the recess;    displacing the second board longitudinally.    
     
     
         44 . A method of joining floor boards according to  claim 43 , wherein the joint is reinforced by glue, applied to the top side of the protrusion before mounting the second board.