Refrigerator

A refrigerator comprising:

• a cabinet that includes a storage compartment and an opening on a first surface of the storage compartment;
• a door that is coupled to the cabinet and that is configured to open or close the opening, the door movable between an initial position and a secondary position;
• a first drawer that is located in the storage compartment and that is configured to store food;
• a plurality of first rollers, each of the plurality of first rollers being coupled to a first side of the first drawer or a second side of the first drawer;
• a plurality of first support rails, each of the plurality of first support rails being coupled to a first side of the storage compartment or a second side of the storage compartment, and each of the plurality of first support rails being configured to guide one or more of the plurality of first rollers;
• a base that is located at a third side of the first drawer in the storage compartment and that moves the base between a first position and a second position;
• and
• a withdrawal unit that moves the base between the first position and the second position based on movement of the door between the initial position and the secondary position, respectively,
• wherein the base includes first one of a connection protrusion and a protrusion insertion groove, the first drawer includes a second one of the connection protrusion and the protrusion insertion groove, the connection protrusion being selectively coupled to and uncoupled from the protrusion insertion groove based on a distance between the first drawer and the base,
• wherein each of the plurality of first support rails includes an inclined section that guides one or more of the plurality of first rollers and gradually changes a height of the first drawer as one or more of the plurality of first rollers moves in the inclined section, thereby changing the distance between the first drawer and the base,
• wherein, when the door is in the initial position, the connection protrusion and the protrusion insertion groove are coupled together such that the base is configured to move together with the first drawer, and
• wherein, when the door moves from the initial position to the secondary position, one or more of the plurality of first rollers moves in a corresponding one or more of the inclined sections of the plurality of first support rails as the base moves from the first position to the second position, thereby changing the height of the first drawer and changing the distance between the first drawer and the base such that the connection protrusion separates from the protrusion insertion groove.