Patent ID: 9675191
Date: 2017-06-13
CPC Classifications: A47G,B65D

Claim:
1. A stopper for a beverage container comprising: a stopper main body that attaches to an upper opening of a beverage container main body and comprises a liquid through hole on the inside thereof; 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; wherein the hinge shaft connects a hinge portion of the stopper main body with right and left hinge portions of the lid, wherein the hinge portion of the stopper main body is axially aligned between the right and left hinge portions; a storage portion is provided in the hinge portion of the stopper main body; a torsion spring is housed in the storage portion; a cover member covers an opening of the storage portion; the torsion spring and the cover member are integrated with the hinge portion of the stopper main body and the right and left lid hinge portions by the hinge shaft, the cover member rotatable with respect to the hinge portion of the stopper main body; the hinge portion of the stopper main body and the cover member enclose the torsion spring; arm portions, which are provided at both end portions of the torsion spring, are respectively freely fitted into a fixed groove which is provided in the storage portion, and a latching groove which is provided in the cover member; and, the lid is biased toward an opening direction by a connection portion of the cover member abutting against a connection receiving portion of the lid.