The utility model discloses a lid of hidden bolt structure, including lid subassembly and the movable top cover of being located on lid subassembly open, be equipped with the suction
nozzle on lid subassembly, the one end of top cover is equipped with the groove body, is equipped with the movable
paddle on the groove body, and the one end rotation is connected in the groove body, and the other end is buckled with lid subassembly, and the top cover is unlocked through manual rotation
paddle, one side or both sides of groove body is equipped with the connection component and passes into the
paddle, and the paddle is installed in the groove body through the connection component, and the connection component hides in the paddle, and the connection component is completely hidden, does not
expose, and beautiful, firm and reliable, has reduced the risk that the shaft comes out, loosens because of the size cooperation difference, has greatly promoted product use convenience and the degree of appearance, avoided the abrasion that the lid falls to the shaft caused, therefore will not appear the situation that the shaft abrasion leads to the unlocking resistance feeling even damage.