Foldable container having corner locking structure

A foldable container comprising:

• a bottom plate;
• a top plate;
• and side wall panels including a front panel, a rear panel, and a side panel provided between the bottom plate and the top plate, wherein the top plate is completely detachably coupled to the side wall panel,
• the container comprising:
• posts (P) provided on both sides of the front panel and the rear panel in a vertical direction to bear a load of the container;
• torsion bars provided at lower ends of the side panel, the front panel, and the rear panel, respectively;
• and a corner locking structure that couples the top plate, the rear panel, and the side panel at an upper corner,
• wherein the corner locking structure comprises:
• a corner casting protrusion protruding downward from a lower end of a corner casting of a corner of the top plate;
• a first coupling hole (123) penetrating the corner casting protrusion in a transverse direction;
• a post coupling hole (P1) provided at an upper end of the post and into which the corner casting protrusion is inserted;
• a second coupling hole (P3) penetrating the post coupling hole in the transverse direction;
• and
• a corner locking member (160) provided on the side panel and inserted into the first coupling hole (123) and the second coupling hole (P3) to couple the top plate, the rear panel, and the side panel.