An electronic apparatus according to an embodiment comprises a first housing, a second housing, a display, a motor disposed in the first housing and providing the second housing with a driving force, a driving gear coupled to the motor, at least one transmitting gear which is engaged with the driving gear so as to be rotatable about a rotary shaft that is perpendicular to the rotary shaft of the driving gear according to the rotation of the driving gear, and a rack gear which is moved according to the rotation of the at least one transmitting gear, wherein the rack gear comprises a plurality of teeth engaged with the at least one transmitting gear, and has a gear surface facing a direction perpendicular to a direction in which one surface of the second housing faces.