Patent attributes
A stopper for a beverage container is described. The stopper includes a stopper main body that is attached to an upper opening of a beverage container main body and includes a liquid through hole on the inside thereof; and a lid that is axially supported by a hinge shaft that is provided at an end of the stopper main body, and which opens and closes the liquid through hole in a rotational manner; the hinge shaft connects a hinge portion of the stopper main body, and right and left hinge portions of the lid; a storage portion is provided on at least one of the right and left hinge portions of the lid, and the hinge portion of the stopper main body; at least one end of the storage portion in the axis direction of the hinge shaft forms an opening; and a torsion spring is stored in the storage portion, and a cover member covers the opening of the storage portion.
