Fastener to attach a column to a tubular bar, attached column and assembly with at least a column and a bar

摘要

The fastener (1) for attaching a column (3) to a tubular bar (5) has two jaws (7, 9) and a screw (11) with which the jaws (7, 9) are held in one end of the bar (5) diametrically opposite one another in the longitudinal direction of the bar. The jaws (7, 9) are movable with respect to one another. Each jaw (7, 9) has an end face (15a, 17a) which is intended for bearing against the column (3), is adapted to the latter and has a projecting extension (19a, 21a) claw-like or hook-like in cross-section. The cross-section of the extension (19a or 21a) of the one jaw (7 or 9) is designed in mirror image to the cross-section of the extension (21a or 19a) of the other jaw (9 or 7). In each case an extension (19a, 21a) of each jaw (7, 9) engages in one overhanging edge area of one of two grooves (35, 37) formed in the column (3). The fastener (1) according to the invention enables telescoping columns to be used, since the fasteners (1) do not protrude into the inner space of the column (3). Furthermore, in an assembly produced from columns (3) and bars (5) which are connected to one another by the fasteners (1) according to the invention, columns with two different diameters can be used without having to adapt the length of the bars (5). The annular grooves (35, 37) on the outside of the column (3) can be produced inexpensively in a turning operation which is simple to carry out. The bars (5) can be attached to the column (3) at almost any angle, which results in additional design possibilities in the manufacture of assemblies. IMAGE