Vacuum-sealed container

A vacuum-sealed container comprising:

• a container main body, which has a lid coupling groove formed along an edge of an upper end portion of an opening and disposed along a closed route;
• a lid main body, which is made of a material having elasticity and formed to be convex upward, and has a sealing portion that is formed along an edge of the lid main body and is inserted into the lid coupling groove to seal an interior of the container main body;
• and
• a valve, which is installed on the lid main body to provide a passageway through which air in the container main body is discharged to the outside, the valve being configured to open or close the passageway;
• wherein the lid coupling groove is disposed such that an opening of the lid coupling groove is directed toward an inside of the container main body, and an inner surface of the lid coupling groove becomes gradually higher outwardly,
• when the sealing portion is inserted into the lid coupling groove, an upper surface of the sealing portion comes into contact with an upper surface of the lid coupling groove, and a lower surface of the sealing portion comes into contact with a lower surface of the lid coupling groove, such that double sealing is made,
• wherein the lid main body is characterized as follows:
• (i) when a central portion of the lid main body is pressed downward in a state in which the air passageway is open, the lid main body is elastically deformed convexly downwardly,
• (ii) when the force applied to the container main body is eliminated, the lid main body is to be spread upward by its own elastic force.