| 摘要 |
<p>It comprises an angular shape (1) whose faces (2,3) are provided with a number of protruding tabs (5) with longitudinal serrations (6) resembling an arrowhead and which are pressure-fitted into longitudinal grooves (15) provided along the edges of the panels (13,14) to be assembled, and is characterised in that prolongations in the form of wings (9,10,12), which decrease in thickness towards their free edge, project from the longitudinal edge of both faces (2,3) of the shape (1) as well as from the arris formed where said faces meet, said prolongations being pressed and flattened against the adjacent surface of the elements (13,14) to be assembled when the device is fitted. A longitudinal groove (4) can be provided along the internal line formed where the two faces (2,3) of the shape (1) converge. <IMAGE></p> |
