Valve-integrating container, liquid withdrawing device equipped with the same, and method for manufacturing valve-integrating container

A valve-integrating container, comprising:

• a container body formed in a cylindrical shape extending in an axial direction, the container body having an enlarged-diameter portion, a reduced-diameter portion provided below the enlarged-diameter portion, and a connecting portion connecting the enlarged-diameter portion and the reduced-diameter portion, and
• a valve mechanism mounted to the reduced-diameter portion of the container body and switching whether a liquid stored in the container body is allowed to flow out through a first opening portion provided at a lower end of the reduced-diameter portion,
• the valve mechanism including:
• a spring disposed along the axial direction;
• a spring supporting part supporting one end portion of the spring;
• and
• a valve plug disposed between the spring supporting part and the first opening portion and receiving a biasing force toward the first opening portion from an other end portion of the spring,
• the spring supporting part including:
• a liquid flow channel formed in a cylindrical shape extending along the axial direction;
• a lower end portion mounted to an inner circumferential surface of the reduced-diameter portion;
• an upper end portion projecting toward the enlarged-diameter portion;
• and
• a first guide groove formed on an outer circumferential surface thereof for guiding a liquid stored in the connecting portion downwardly in the axial direction,
• wherein the valve plug has a second guide groove formed on an outer circumferential surface thereof for guiding the liquid guided by the first guide groove, downwardly in the axial direction to the first opening portion.