Mechanical lockings of floor panels and a tongue blank

A set of floor panels provided with a locking system comprising a displaceable tongue in a displacement groove in a first edge of a first floor panel, cooperating with a tongue groove in an adjacent second edge of a second floor panel for vertical locking of the first and second edges,

• the locking system further comprises a locking strip including a locking element in one of the first and second edges which cooperates, for horizontal locking of the first and second edges, with a locking groove in the other of the first and second edges,
• the displaceable tongue comprises a protrusion and the displacement groove comprises a cavity, and the protrusion is slideable against a wall of the cavity to obtain a displacement of the displaceable tongue in a first direction perpendicular to the first and second edges and thereby obtain the vertical locking of the first and second edges,
• wherein the cavity extends vertically downwards to the rear side of the first floor panel.

A set of floor panels provided with a locking system comprising a displaceable tongue in a displacement groove in a first edge of a first floor panel, cooperating with a tongue groove in an adjacent second edge of a second floor panel for vertical locking of the first and second edges,

• the locking system further comprises a locking strip including a locking element in one of the first and second edges which cooperates, for horizontal locking of the first and second edges, with a locking groove in the other of the first and second edges,
• the displaceable tongue comprises a protrusion and the displacement groove comprises a cavity, and the protrusion is slideable against a wall of the cavity to obtain a displacement of the displaceable tongue in a first direction perpendicular to the first and second edges and thereby obtain the vertical locking of the first and second edges,
• wherein the protrusion is flexible and configured to exert a horizontal pre-tension against the tongue groove.

A set of floor panels provided with a locking system comprising a displaceable tongue in a displacement groove in a first edge of a first floor panel, cooperating with a tongue groove in an adjacent second edge of a second floor panel for vertical locking of the first and second edges,

• the locking system further comprises a locking strip including a locking element in one of the first and second edges which cooperates, for horizontal locking of the first and second edges, with a locking groove in the other of the first and second edges,
• the displaceable tongue comprises a protrusion and the displacement groove comprises a cavity, and the protrusion is slideable against a wall of the cavity to obtain a displacement of the displaceable tongue in a first direction perpendicular to the first and second edges and thereby obtain the vertical locking of the first and second edges,
• wherein the protrusion is located on a lower and/or upper part of the displaceable tongue.

A tongue blank comprising at least two tongues having a tongue length, the tongues being connected to each other and adapted to be separated from each other and inserted into an edge groove of a floor panel,

• wherein each tongue comprises a main tongue body comprising at least two protrusions extending essentially in a direction along the tongue length, and two recesses,
• wherein each tongue comprises at least two wedge parts located at least partly in or adjacent to the recesses and
• wherein the main tongue body and the at least two wedge parts comprise releasable wedge part connections adapted to be released from the main tongue body during insertion of each tongue into the groove.