Folding display rack

A folding display rack, comprising a display frame, wherein the display frame comprises a pair of short frames and at least one pair of long frames, and the folding display rack further comprises:

• a corner connection piece, comprising an upper corner connection piece and a lower corner connection piece, two ends of each long frame are respectively connected to an upper short frame of the pair of short frames and a lower short frame of the pair of short frames through a respective one of the upper corner connection piece and a respective one of the lower corner connection piece;
• and
• an intermediate connection piece, the intermediate connection piece is located at a middle position of a respective one of the long frames and divides a respective one of the long frames into two parts, the long frame can be folded in a direction from a middle to an inner side of the display frame through the intermediate connection piece, the long frames on two sides of the display frame can be folded from the middle through the corner connection piece and then are staggered, folded and stored on the lower short frame, wherein the lower corner connection piece comprises a lower corner body, a lower pin shaft and a lower rotation piece,
• wherein the lower rotation piece is connected to the lower corner body through the lower pin shaft and is rotatable around the lower pin shaft towards the inner side of the display frame, a movable end of the lower rotation piece is in inserting connection with the long frame,
• wherein with one end of the lower pin shaft as a reference point, another end of the lower pin shaft inclines downwards and towards the inner side of the display frame and is insertion-mounted at a connecting end of the lower corner body and the lower rotation piece,
• wherein the upper corner connection piece comprises an upper corner body, an upper pin shaft, and an upper rotation piece, and the upper corner connection piece and the lower corner connection piece are respectively mounted at upper and lower ends of the long frame to form an axisymmetric structure.