Hitachi-lg Data Storage, Inc.

Yosuke Ishizuka

Koji Matsumoto

Shinsuke Takatsuka

Seiji Hamaie

Nozomu Harada

Provided is an optical disk device, including a top case and a bottom case which constitute a housing having a substantially box shape in which: the top case includes, on one side thereof, a hook which engages with the bottom case; the bottom case includes an engaging portion which is provided with a cutout which engages with the hook; and a shielding portion for preventing an air flow passing through the cutout is provided in an inside of the cutout.

Optical disk device having an air flow shielding portion

The present invention provides an optical disk drive that performs a stable lock operation with a small number of components at the time of the insertion of a tray. The optical disk drive has a locking mechanism which engages the inserted tray with the chassis, a reset arm provided in the tray to return the locking mechanism to the initial state, and an engaging boss that is provided in the chassis and is engaged with the reset arm. The tray has a projecting portion for controlling the engagement position between the reset arm and the engaging boss. The projecting portion comes into contact with a back surface of the engaging boss, to control the engaging amount between the reset arm and the engaging boss to be constant.

Optical disk drive

In an optical disc apparatus, convex portions are provided on the inner surface of a top cover that covers the top surface side of the apparatus such that the convex portions are directly opposite or directly above a flexible printed circuit board during the slide-in/slide-out movements of a tray. The convex portions are positioned further outwardly from the outer circumference of an optical disc with respect to the rotation center of the optical disc upon completion of the slide-in movement of the tray. The convex portions guide or slide part of the flexible printed circuit board along the tip end surfaces of the convex portions in the direction of the slide-in movement of the tray when the part of the flexible printed circuit board comes into contact with the inner surface of the top cover during the slide-in movement of the tray.

Optical disc apparatus

To prevent an optical disc from being removed from a clamper even when an impact force is applied in an optical disc apparatus. A displacement amount by which a disc motor is sunk on the bottom case side is suppressed. In more detail, a convex portion which protrudes in the bottom cover direction is provided at a region including the whole or a part of an orthographically-projected surface of the disc motor on a surface of a bottom case opposed to a rear surface of the disc motor, and in a state of recording or reproducing, the sum of a distance between a motor fixing plate and a bottom cover and a distance between the bottom cover and the convex portion of the bottom case is smaller in the rotational axis direction of the disc motor than the sum of a distance between an optical disc and a tray and an insertion depth by which a clamper is inserted into a center hole of an optical disc.

In an optical disk apparatus, an ejection lock mechanism includes three (3) arm portions; i.e., a lock arm for locking a tray, being engaged with a lock member provided on a housing, a drive arm, in contact with the lock arm, for moving the lock arm to a position of being engaged with or releasing from engagement with the lock member, a solenoid having a movable plunger to be engaged with the drive arm, and a reset arm for restoring the plunger of the solenoid, wherein the reset arm is made up with an arm portion and an elastic portion, which are formed in one (1) body (as a unit) from a plastic, and the arm portion has two (2) arm pieces, and wherein a first arm piece has a function for moving the drive arm to the position of releasing from engagement with the lock member, through rotation thereof while being in contact with the lock member, and a second arm piece has a function for restoring the drive arm to a plunger storing portion of the solenoid, with a biasing force of the elastic portion, and the elastic portion has the 'U'-shaped portions, turning round to the reset arm through an upper portion of the drive arm, whereby rotation of the first arm piece in contact with the lock member makes a mutual distance between the 'U'-shaped portions, so as to maintain stability on the spring biasing force thereof.

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Kawasaki, Japan

Yosuke Ishizuka