Refillable container

A refillable container, comprising:

• an outer container, which has an opening formed on top thereof, and is made of plastic;
• a cover, which is configured to close the opening of the outer container, and is made of plastic;
• an inner container, which is made of paper, configured to store a liquid content therein, and is accommodated in the outer container so as to be replaceable when the liquid content is used up, the inner container having a hole formed in an upper surface thereof, and having a suction port formed by sealing the hole with a tearable film;
• and
• a dispense pump, which is provided on the cover, and is configured to pump up and dispense the liquid content with a suction tube to an outside of the refillable container under a state in which the suction tube is stuck into the suction port of the inner container accommodated in the outer container, the suction tube of the dispense pump being inserted into the suction port of the inner container when the opening of the outer container is closed by the cover,
• wherein the suction tube of the dispense pump has a diameter smaller than a diameter of the hole that forms the suction port of the inner container,
• wherein the suction tube includes a collar portion having a wedge shape and a diameter equal to or slightly larger than the diameter of the hole,
• wherein, when the opening of the outer container is closed by the cover, along with downward movement of the suction tube of the dispense pump, the collar portion is brought into abutment against the hole, and is elastically deformed so as to enter the inner container, and
• wherein, when the cover is disengaged from the outer container, along with upward movement of the suction tube of the dispense pump, the collar portion is caught by the hole, thereby being pulled up together with the inner container.