| 摘要 |
Two hollow profile bars (1; 2) of identical rectangular cross section, in which two inside profiles (10; 11) of identical rectangular cross section are formed, are set against each other at an angle and connected by means of two dowels (17) that are of at least partially round cross section and which are installed by means of blocks (12; 13) that are matched to the cross section of the inside profile (10; 11), on the one side in the two inside profiles (10; 11) of the one hollow profile bar (1), from which they protrude at the face side, and on the other side in the one inside profile (11) of the other hollow profile bar (2), through the wall (8) of which they pass in drilled holes, the blocks (12) being secured in the latter hollow profile bar (2) by means of pins (22) that fit through drilled holes in the wall (3) of the hollow profile bar into drilled holes (20) in the blocks (12) and the dowels (17) which extend in recesses (19) in the blocks (12) that match them in cross section, are held by these same pins (22) and which extend into drilled holes (21) in the dowels (17) or clamp them with their tips, and the blocks (13) and the dowels (17) are held in the first profile bar (1) in the same way (2730) or the dowels (17) are previously connected to the blocks (13) (24-26) and the pins fit into drilled holes in the blocks or clamp them with their tips. |
