Refrigerator

A refrigerator comprising:

• a cabinet that defines a storage chamber;
• a drawer door comprising a door part configured to open and close the storage chamber and a drawer part that is configured to be inserted into and withdrawn out of the storage chamber and defines a storage space;
• a rail assembly that slidably couples the drawer door to the cabinet;
• a driving device disposed at the door part and configured to provide a driving force;
• and
• an elevation device disposed at the drawer part, the elevation device being coupled to the driving device to vertically elevate at least a portion of the drawer part,
• wherein the driving device comprises:
• a motor assembly having a motor and a plurality of gears configured to be rotated by the motor, each of the plurality of gears being configured to rotate about respective gear axes that are parallel to a rotation shaft of the motor,
• a pair of screw units, each of the pair of screw units being disposed on opposite sides of the motor assembly and configured to be actuated by the motor assembly at the same time as each other, and
• a pair of levers, each of the pair of levers being coupled to and configured to be rotated by a corresponding one of the pair of screw units, the pair of levers being coupled to and configured to elevate the elevation device, and
• wherein each of the screw units comprises:
• a screw configured to be rotated by the motor assembly along a screw axis that is transverse to the gear axes, and
• a screw holder that receives the screw and has a screw thread engaged with the screw, the screw holder being configured to move along the screw based on a rotation of the screw, and
• wherein the plurality of gears of the motor assembly includes a pair of intersection gears that are orthogonally coupled to respective lower ends of the screws to thereby transmit a driving torque of the motor to the pair of screw units.