Display rack

Display rack comprising a plurality of display frames enclosing flat panes and interconnected by coupling members, each display frame comprising frame side members and corner pieces interconnecting adjacent ends of said side members, said frame members being extruded profiles having a constant cross-section over the entire length thereof including two parallel tube portions interconnected by a bridge portion and having between said tube portions two longitudinal grooves, said grooves having openings in opposite directions and the bridge portion being located mainly in the plane of the completed display rack, said corner pieces having at least two pairs of mutually perpendicular legs, the legs of each pair being mutually parallel and inserted into said tube portions of the frame side members under friction, the improvement wherein at least one externally located longitudinal groove of each display frame has a longitudinal axis, is recessed having said outwardly facing opening along the entire length of the groove and being narrower than the rest of the groove, a dowel member of each of said coupling member positioned within the groove and including a portion preventing said dowel member from being forced out of the groove transversely to the longitudinal axis thereof, said corner pieces being formed with cavities constituting extensions of the recessed grooves of the frame side members with the dowel members passing without any obstacle through the corner pieces and into said recessed grooves, and wherein each coupling member comprises at least two said dowel members, each of which is introduced through one of the cavities of a corner piece and projected further into the corresponding recessed groove in a frame side member to interconnect at least two adjacent display frames at a given corner of said display rack.