Abstract: A profile-connecting device for connecting two profile bars. The first profile bar has an end side which abuts a longitudinal side of a second profile bar. At least the outer longitudinal side of the second profile bar which is directed toward the end side of the first profile bar and at least one outer longitudinal side of the first profile bar has an undercut groove.

Abstract: A profile-connecting device (10) for connecting two profile bars (20; 30), in particular made of light metal, of which a first profile bar (20) has an end side butting against a longitudinal side of a second profile bar (30), at least that outer longitudinal side of the second profile bar (30) which is directed toward the end side of the first profile bar (20) and at least one outer longitudinal side, in particular two mutually opposite outer longitudinal sides, of the first profile bar (20) having an undercut groove (32; 22), is characterized by a clamping unit (13), which, at least in certain regions, has an outer contour which can be clamped in the groove (22) by virtue of being widened, a screw unit (14) which can be introduced into a continuous cutout (27) of the clamping unit (13), and a threaded unit (16) which can be introduced with rear-engagement action into the groove (32) of the second profile bar (30), the clamping unit (13) being spread apart, and thus clamped in the groove (22) of the first pro