| 摘要 |
The invention relates to a locking system for mechanical joining of floorboards ( 1, 1' ) which have a body ( 30 ), a lower balancing layer ( 34 ) and an upper surface layer ( 32 ). A strip ( 6 ) is integrally formed with the body ( 30 ) of the floorboard ( 1 ) and extends under an adjoining floorboard ( 1' ). The strip ( 6 ) has a locking element ( 8 ), which engages a looking groove ( 14 ) in the underside of the adjoining floorboard ( 1' ) and forms a horizontal joint. A tongue ( 38 ) and a tongue groove ( 36 ) form a vertical joint between upper and lower plane-parallel contact surfaces ( 43, 45 ) and are designed in such manner that the lower contact surfaces ( 45 ) are on a level between the upper side of the locking element ( 8 ) and a plane containing the underside ( 3 ) of the floorboard. The invention also relates to a floorboard having such a locking system, a floor made of such floorboards, as well as a method for making such a locking system.
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