Mechanical locking of floor panels

A set of floor panels provided with a locking system, the locking system comprising a separate displaceable tongue integrated with an edge of a floor panel for connecting the edge vertically to an adjacent edge of a similar panel,

• wherein at least a part of the displaceable tongue is displaceable in a first horizontal direction, and
• wherein the floor panel and the similar floor panel are configured to be locked vertically by a pressure applied in a second horizontal direction substantially perpendicular to the first direction at an edge section of the displaceable tongue and essentially along the edge,
• wherein the floor panels are provided with first and second connectors, the connectors are integrated with the floor panels and configured to connect adjacent edges, the first connector comprises a locking strip with an upwardly directed locking element at the edge of the floor panel and a downwardly open locking groove at an adjacent edge of another floor panel for connecting the adjacent edges in a horizontal direction perpendicular to the adjacent edges, the second connector comprises the displaceable tongue at the edge of the floor panel, and a horizontally open tongue groove in the adjacent edge of the another floor panel for connecting the adjacent edges in vertical direction, the connectors are configured to be locked with angling or a vertical motion,
• wherein a locking part of the displaceable tongue is arranged in an inner initial position in a displacement groove at the edge of the floor panel, and
• wherein the locking part is configured to be displaced in the first horizontal direction from the initial unlocked position to a final outer locked position in the tongue groove of another the floor panel by the pressure directed in the second horizontal direction.