Problem to be solved: to provide a portable tumbler capable of opening and closing a smooth lid.Solution: the rotor ring 8 is installed on the outer side of the lid 2 so that the spring 4 is compressed or loosened by the hinge 3 on the upper lid of the main body, and the rotor ring is turned off, and the projection inside the rotor ring is detached from the home.The leaf spring 7 installed in the lid is opened while rotating by the restoring force of the spring with the leaf springWhen a lid is pushed vertically from the upper side to the bottom, the projection inside the rotor ring is inserted into the homeReturned to the original positionThe lid is closed and locked.Diagram
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