| 摘要 |
<p>The frame for cupboards is generally parallel-opipedic in shape and is formed of sections preferably of extruded aluminium, which form columns (1), crosspieces (2) and beams (3). Each beam (3) has two longitudinal wings (6) adapted to fit tightly in respective housings (13) which are part of the columns (1) and crosspieces (2), so that they are arranged at right angles to each other. At the end of each column (1), crosspiece (2) and beam (3) there are complementary and respective means of coupling (10-11, 15-16, 4) which exert on the beam (3) a permanent axial action bringing it into proximity with the column (1) or crosspiece (2). <IMAGE></p> |
