System for joining building boards

A mechanical locking system for locking a first edge of a first panel to a second edge of an identical second panel, the mechanical locking system comprising:

• a tongue and groove on the first edge and the second edge forming a first mechanical connection locking the first and second edges to each other in a first direction at right angles to a principal plane of the panels;
• a locking device arranged on an underside of the first and the second edges, the locking device forming a second mechanical connection locking the first and the second edges to each other in a second direction parallel to the principal plane and at right angles to the edges;
• the locking device including a locking groove which extends parallel to and spaced from the second edge, the locking groove being open at the underside of the second edge and including an internal surface;
• the locking device further including a strip extending from the first edge, the strip extending throughout substantially an entire length of the first edge and being provided with a locking element projecting from the strip;
• the strip, the locking element, and the locking groove being configured such that when the second edge is pressed against an upper part of the first edge and is then angled down, the locking element can enter the locking groove;
• the locking element has a locking surface which faces the first edge and is configured so as to contact the internal surface of the locking groove when the first and second edges are joined together to prevent substantial separation of the joined first and second edges;
• and
• the locking element further including an outer portion which is most distant to the joined edges and is not in contact with the locking groove when-the first and second edges are joined together.

A mechanical locking system for locking a first edge of a first floor panel to a second edge of an identical second floor panel, the mechanical locking system comprising:

• a tongue and groove on the first edge and the second edge forming a first mechanical connection locking the first and second edges to each other in a first direction at right angles to a principal plane of the panels;
• a locking device arranged on an underside of the first and the second edges, the locking device forming a second mechanical connection locking the first and the second edges to each other in a second direction parallel to the principal plane and at right angles to the edges;
• the locking device including a locking groove which extends parallel to and spaced from the second edge, the locking groove being open at the underside of the second edge and including an internal surface;
• the locking device further including a strip extending from the first edge, the strip extending throughout substantially an entire length of the first edge and being provided with a locking element projecting from the strip;
• the strip, the locking element, and the locking groove being configured such that when the second edge is pressed against an upper part of the first edge and is then angled down, the locking element can enter the locking groove;
• the locking element has a locking surface which faces the first edge and is configured so as to contact the internal surface of the locking groove to prevent substantial separation of the joined first and second edges;
• and
• the locking element further including an outer portion which is most distant to the joined edges and is not in contact with the locking groove when the first and second edges are joined together.

A floating laminate floor board including an upper decorative wear layer, a core layer arranged beneath the upper decorative wear layer, the core layer being made of a material that is not as hard as the upper decorative wear layer, a base layer beneath the core layer, and a mechanical locking system for locking a first edge of a first floor board to a second edge of an identical second floor board, the mechanical locking system comprising:

• a tongue and groove on the first edge and the second edge forming a first mechanical connection locking the first and second edges to each other in a first direction at right angles to a principal plane of the floor boards, the tongue and groove being formed in the material of the core layer;
• and
• a locking device arranged on an underside of the first and the second edges, the locking device forming a second mechanical connection locking the first and the second edges to each other in a second direction parallel to the principal plane and at right angles to the edges, wherein the locking device includes a locking groove which extends parallel to and spaced from the second edge, the locking groove being open at the underside of the second edge and including an internal surface,
• wherein the locking device further includes a strip extending from the first edge, the strip extending throughout substantially an entire length of the first edge and being provided with a locking element projecting from the strip,
• wherein the strip, the locking element, and the locking groove are configured such that when the second edge is pressed against an upper part of the first edge and is then angled down, the locking element can enter the locking groove, and
• wherein the locking element has a locking surface which faces the first edge and is configured so as to contact the internal surface of the locking groove to prevent substantial separation of the joined first and second edges.

A mechanical locking system for locking a first edge of a first panel to a second edge of an identical second panel, the mechanical locking system comprising:

• a tongue on the first edge and a tongue groove on the second edge, the tongue and the tongue groove forming a first mechanical connection locking the first and second edges to each other in a first direction at right angles to a principal plane of the panels;
• a locking device arranged on an underside of the first and the second edges, the locking device forming a second mechanical connection locking the first and the second edges to each other in a second direction parallel to the principal plane and at right angles to the edges;
• the locking device including a locking groove which extends parallel to the second edge, the locking groove being open at the underside of the second panel and including an internal surface;
• the locking device further including a strip comprising a lower portion of the tongue groove and extending along a lower surface of the first panel, the strip extending throughout substantially an entire length of the first edge and being provided with a locking element projecting from the strip;
• the strip, the locking element, and the locking groove being configured such that when the second edge is pressed against an upper part of the first edge and is then angled down, the locking element can enter the locking groove;
• the locking element has a locking surface which faces the tongue groove and is configured so as to contact the internal surface of the locking groove when the first and second edges are joined together to prevent substantial separation of the joined first and second edges;
• and
• the locking element Her including an outer portion which is most distant to the joined edges and is not in contact with the locking groove when the first and second edges are joined together.