Sliding cover-opening device

A sliding cover-opening device, comprising:

• a top support located on an upper portion of a main body of a cigarette case, wherein an overall structure of the top support is a hollow frame having a plurality of walls for fixing other elements and a plurality of holes for other elements to extend out;
• two side walls of the top support opposite to each other are provided with a pair of sliding grooves, one of the two side walls is provided with a cigarette case snap-fit hole, and the other one of the two side walls is fixedly connected to a spring fixing plate on the cigarette case;
• a sliding-resistant device located inside the hollow frame of the top support, wherein the sliding-resistant device comprises a cylindrical spring cap, a spring threaded seat located on a lower portion of the cylindrical spring cap and fixedly connected to the cylindrical spring cap, a cover pushing spring located inside the cylindrical spring cap, and a spring head located on an upper portion of the cylindrical spring cap and connected to the cover pushing spring;
• a rotatable cover opening device, wherein the rotatable cover opening device comprises a rotatable pushing cover, a first segment of the rotatable pushing cover is in a form of cover for covering at least a part of an upper surface of the top support, and an end of the first segment is provided with a snap-fit block matched with the cigarette case snap-fit hole;
• a second segment of the rotatable pushing cover is a pair of symmetrically separated blocks, each of the separated blocks is provided with a sliding rotating groove, a connection part of the two first segment and the second segment is a cylinder body, two ends of the cylinder body are respectively provided with a rotating locating pin, the rotating locating pin is arranged inside one of the sliding grooves, and the locating pin rotates freely and moves horizontally;
• the rotatable cover opening device further comprises a rotating torsional spring, a main body of the rotating torsional spring is wound on a cylinder body of a fixed support, one end of the rotating torsional spring is fixedly connected inside the sliding rotating groove, and the other end of the rotating torsional spring is fixed by the spring fixing plate.