Tool case

A combination tool case comprising:

• a front frame unit, said front frame unit comprising a rectangular open frame and two side panels injection-molded from plastics in integrity, said open frame having two beveled coupling faces disposed at two opposite lateral sides thereof, said side panels each having a beveled coupling face disposed at one side thereof and fitting the beveled coupling faces of said open frame, the beveled coupling faces of said side panels being respectively hinged to the beveled coupling faces of said open frame for enabling said open frame and said side panels to be turned between a first position where said open frame and said side panels are maintained at the same plane, and a second position where said side panels are disposed perpendicular to said open frame and the beveled coupling faces of said side panels are respectively abutted against the beveled coupling faces of said open frame;
• a back frame unit, said back frame unit comprising a back panel and a bottom panel injection-molded from plastics in integrity, said back panel comprising a beveled coupling face disposed at one side, said bottom panel comprising a beveled coupling face, said back panel comprising a beveled coupling face hinged to the beveled coupling face of said bottom panel for enabling said back panel and said bottom panel to be turned relative to each other between a first position where said back panel and said bottom panel are disposed at the same plane, and a second position where said back panel and said bottom panel are disposed at right angles and the beveled coupling face of said back panel is abutted against the beveled coupling face of said bottom panel;
• a front frame and back frame fastening structure that secures said front frame unit and said back frame unit together;
• a storage box supported on said front frame unit and said back frame unit at a top side, said storage box comprised of a box body and a cover pivoted to said box body and adapted for closing/opening said box body;
• a plurality of drawers mountable in space surrounded by said front frame unit, said back frame unit, and said storage box;
• and
• a drawer positioning structure adapted for securing said drawers to the space surrounded by said front frame unit, said back frame unit, and said storage box;
• said drawer positioning structure comprising a plurality of clamping plates respectively provided at a rear side of each of said drawers, and a locating rod inserted through said clamping plates and rotated through an angle between a first position where said clamping plates are engaged with said locating rod to hold said drawers inside the space surrounded by said front frame unit, said back frame unit, and said storage box, and a second position where said clamping plates are disengaged from said locating rod, enabling said drawers to be moved away from the space surrounded by said front frame unit, said back frame unit, and said storage box.