Patent ID: 7852602

Claim:
A disk device comprising: an enclosure which internally includes a disk accommodating unit and an actuator accommodating unit; at least one disk medium which is accommodated in the disk accommodating unit and is rotated by a spindle motor; a rotation actuator assembly which is accommodated in the actuator accommodating unit and reads or writes data using a head to the disk medium; a voice coil motor which is accommodated in the actuator accommodating unit to drive the rotation actuator assembly, and includes an upper yoke, an upper magnet, a lower magnet, a lower yoke, and a coil fitted to the rotation actuator assembly; and an airflow dividing member which is provided near a communicating hole connecting between the inside and the outside of the upper yoke, and divides a part of airflow generated by the rotation of the disk medium and passing along the inner wall of the enclosure, toward the communicating hole.