Disk driving apparatus

Abstract

A disk driving apparatus includes: a head base unit which supports a head for recording data into and reproducing data from a storage medium, the head base unit being able to travel between a first position where the head is close to the storage medium for recording data thereto and reproducing data therefrom and a second position where the head is apart from the storage medium; a tray provided with a tray rack extending in a predetermined direction, the tray being slidable along the tray rack between a third position at which the head performs recording and reproduction on the storage medium and a fourth position at which an operator can place the storage medium; a driving power source; a tray gear which is driven by the driving power source; a rotation body gear which is driven by the driving power source; a partial gear which partially engages with the rotation body gear at a predetermined angle; and a rotation body which, in accordance with the rotation of the partial gear, reciprocally rotates so that the head base unit travels between the first position and the second position. When the tray is present at the third position, the tray gear is apart from the tray rack. Moreover, the rotation body includes a rotation body engagement section which engages with the tray while the tray travels from the third position to a predetermined position. Furthermore, the rotation body further includes a rotation body protrusion which pushes the tray substantially in the same direction as the sliding direction of the tray such that the tray gear engages with the tray rack while the tray is travelling between the third position and the fourth position.