| 摘要 |
<p>A floor panel (1) has an edge portion presenting a sidewardly open groove (40) in which a flexible tongue (30) formed as a separate part is received. The tongue (30) has a length direction (L) along the edge portion, a width (W) in the horizontal plane perpendicular to the length and a thickness (T) in the vertical direction. The tongue (30) is designed to cooperate, in a connected state with a tongue groove (20) of an adjacent floor panel (1') and to lock the adjacent panels vertically. The width (W) of the tongue is larger than the thickness (T) and the width (W) varies along the length (L). The tongue has a protruding part (P2) that, in locked position, protrudes outside the groove (40) and that locks against the tongue groove (20). In locked position, the protruding part (P2) of the tongue tilts towards the front side (61) of the panel and a part of the upper tongue surface (33) presses against the upper groove surface (43) while parts of lower surfaces (35,45) close to the bottom (44) of the groove (40) press against each other.
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