The present invention includes a body having a storage compartment defined therein, a door for opening and closing the storage compartment, a lifting member, which includes a handle and a first gear extending in a vertical direction and which is disposed at the door in a manner of being movable upward and downward, a second gear, which is disposed at the door so as to engage with the first gear, a third gear, which is disposed at the door so as to engage with the second gear, and a pushing member, which is disposed at the door so as to be movable in forward and rearward directions and which includes a fourth gear engaging with the third gear, the pushing member exerting external force on the body when the lifting member is lowered, thereby offering an advantage in that a user such as a child, who is short, can easily open the door.