Portable suitcases

A portable suitcase, comprising:

• a case, wherein side walls of the case and a bottom wall of the case enclose a first accommodation space, tops of the side walls enclose a first opening, and the first opening is in communication with the first accommodation space;
• a case lid, wherein one side of the case lid is rotatably connected to the top of one of the side walls of the case such that the case lid is capable of opening and closing the first opening;
• a box, wherein the box comprises box side walls, and the box side walls include two opposing side walls, a top of the box forms a second opening, the box being rotatably connected to an inner side of the side walls of the case;
• and
• a cover plate, including a first side and a second side, wherein the first side is opposite to the second side, the first side is rotatably connected to the case lid, and both ends of the second side are slidably connected to tops of inner sides of the two opposing side walls, such that the cover plate is capable of opening and closing the second opening;
• wherein during closing the first opening, the cover plate is moved to the top of the box to close the second opening, and the box is moved through the first opening into the first accommodation space;
• and
• during opening the first opening, the box is moved through the first opening to an outside of the first accommodation space, and the cover plate is moved to open the second opening.