Sony Corporation

Zensaku Mitsuji

Manabu Obata

Mitsunori Matsumura

Hideaki Tsutsumi

Hisashi Negoro

Morihiro Murata

Yusuke Hirano

A disk drive unit advantageously prevents dust from adhering to a pickup. The disk drive unit has a housing and a tray. The tray reciprocates between a retracted position and a projected position. A first pickup and a second pickup have a spindle motor located therebetween. The tray has a first cutout and a second cutout. A cover is provided to cover the top of the second pickup in its retreated position. The cover has a cover piece, which is disposed in a front portion of the cover that is positioned on the upstream side relative to the rotational direction of a disk-shaped recording medium such that it is movable in a direction parallel to the direction in which the second pickup moves, and urged in the projecting direction.

Disk drive unit

In a disc cartridge, the shutter opening/closing operation is to be performed reliably. To this end, the distal ends of a first engagement memberand a second engagement memberprovided to a baseare pivotally movable in a direction along a lateral surface of a housing, in addition to being movable in a direction perpendicular to the lateral surface of the housing. The state of engagement of the first engagement memberand the second engagement member, provided to the base, with a first mating engagement sectionand with a second mating engagement section, provided to an inner rotor, facing outwards from one lateral surface of the housing, when the baseperforms relative movement along the lateral surface of the housing, may be maintained for prolonged time, while the load applied to the distal ends during engagement and disengagement may be reduced.

Shutter closing mechanism and disc driving apparatus

A disk drive apparatus includes a casing having an upper plate; and a tray. The upper plate includes an arm having an attracted member fixed thereto. When the tray moves from a protruding position to a recording-and-playback position, since engagements of the arm and the tray are engaged with each other, the main body of the arm swings, and the attracted member serves as a chucking position facing a chucked portion of the disk-shaped recording medium placed on the tray. When the tray moves from the recording-and-playback position to the protruding position, since the engagement of the arm is detached from the engagement of the tray, the main body of the arm swings, and the attracted member serves as a retracting position retracting above the chucked portion of the disk-shaped recording medium.

Growing community of inventors

Kanagawa, Japan

Zensaku Mitsuji