Abstract: A frame assembly for a case or similar article comprising a first and a second frames each being a one-piece structure and being different from each other only in their mutual engagement part so that the first frame is hinged to the second frame with side walls and corner pieces incorporated therein to complete a case. Each frame comprises side portions connected to each other by a brace piece thus forming corner openings for receiving the corner pieces. Each frame has adjacent ends which are so arranged that the contacting line of the two ends is covered by the hinge mechanism and unseen from the outside.