JP2003151198A - Disk drive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk drive device suppressing the deterioration of the rotational characteristic of a disk due to fast rotation. SOLUTION: In this disk drive provided with a tray 5, disposed between an operating position housed inside the main body and a disk loading and extracting position projected outside in a displaceable manner and also formed with a loading part with a disk 3 loaded thereon, inner wall surfaces 5a, 5b, 5c and 5d forming the loading part are provided with an escape opening 5e for letting air flow to the outside of the main body, and air flow that rotates following in the fast rotation of the disk 3 is thereby made to flow out of the escape opening 5e to a flow outlet 6a.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device that suppresses deterioration of the disk rotation characteristics due to high speed rotation.

2. Description of the Related Art As a disk device configured to perform a signal reading operation using a light beam, a CD
CD players using (compact discs) have become popular. A stationary CD player has a tray on the front surface of the main body, on which a disc can be mounted and ejected, and a CD can be placed at a predetermined position on the tray. A turntable for driving the disc and a pickup for reading signals from the disc are provided in the center of the main body.

By the way, the signal writing speed in recent disk devices is not only the prescribed speed but also 16 times or 32 times higher.
In order to perform such a high speed write operation, it is necessary to rotate the disk at a high speed, and the air around the disk is compressed accompanying this high speed rotation. An optical pickup for writing a signal of the disc is arranged on the lower surface of the disc, and a flat portion constituting a tray portion for mounting the disc is used for traveling the optical pickup for reading the disc signal in the radial direction of the disc. An opening is provided. The air passing through the opening merges with the air compressed by the rotation of the disk, and pressure is applied to the surface of the disk due to complicated turbulence, which deteriorates the rotational characteristics of the disk. As a result, there is a problem that defocusing or tracking shift occurs during recording, and the quality of the recording signal deteriorates. The present invention provides a disk device that solves this problem.

DISCLOSURE OF THE INVENTION The present invention is a mounting device which is provided so as to be displaceable between an operating position housed inside a main body and a disc attaching / detaching position projected to the outside and on which a disc is mounted. The tray is provided with an air outlet on the inner wall surface forming the above-mentioned mounting portion to improve the rotation characteristics of the disc.

1 is a perspective view showing a state in which a tray of a disk device according to an embodiment of the present invention is ejected, and FIG. 2 is a side sectional view of an essential part showing a state in which the tray in FIG. 1 is inserted in an operating position. Is. In the figure, 1 is a steel plate main body, 2 is a turntable provided inside the main body 1 and to which a disc 3 is attached and detached, and is rotated by a spindle motor 4 provided inside the main body 1. Is configured. Reference numeral 5 is provided so as to be displaceable between a disk attachment / detachment position protruding outside the main body 1 and an operating position housed in the main body 1, and a mounting portion 5A on which the disk 3 is mounted is formed. Is a tray that
Inner wall surfaces 5a, 5b, 5c, so as to surround the placement portion 5A,
5d is divided and arranged. In addition, an escape port 5 for releasing air is provided between the inner wall surfaces 5a and 5b located on the front surface of the tray.
e is provided, and an opening 5f for performing a reading operation by an optical pickup (not shown) for reading a signal recorded on the disc is formed on the rear flat portion. Reference numeral 6 is a front panel attached to the front surface of the tray 5, and is formed below the rear surface of the front panel 6 so as to be connected to the escape port 5e and constitutes an air passage for outflowing an air flow to the outside. An outlet 6a is provided. In such a configuration, when the tray 5 is displaced from the disc attaching / detaching position to the operating position shown in FIG. 2, the turntable 2 and the spindle motor 4 are displaced from below to the operating position shown in FIG. Although the disk 3 is mounted on the disk 3, the structure is well known and the description thereof is omitted. When the disk 3 is rotationally driven by the spindle motor 4, the airflow also flows in the direction A along with the rotation of the disk 3, and gradually the inner wall surfaces 5a, 5b, 5c, and 5d of the disk 3 in the outer peripheral direction. Along the way the air flow begins to be compressed. The air flow compressed in the outer peripheral direction of the disk 3 flows into the escape port 5e shown in the arrow B from the vicinity of the upper and lower surfaces of the disk 3 and then passes through the back surface of the front panel 6 and is shown in the arrow C through the outlet 6a. It will flow from the news.

As described above, according to the present invention, the disc is placed while being provided so as to be displaceable between the operating position housed inside the main body and the disc attaching / detaching position projected to the outside. Since the inner wall surface forming the mounting portion of the tray on which the mounting portion is formed has an escape port for releasing air to the outside of the main body, the air flow generated accompanying the rotation of the disk flows out from the escape port to the outside. It can be done. as a result,
Since the change in the air pressure applied to the disk surface can be suppressed, the rotation characteristics of the disk can be improved.
Therefore, according to the present invention, it is possible to accurately perform the signal reading operation from the disc by the optical pickup and the signal recording operation to the disc, and the present invention has a great effect especially for high-speed rotation of the disc. It plays.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a tray of a disc device according to an embodiment of the present invention is ejected.

FIG. 2 is a cross-sectional view of essential parts showing a state in which the tray in FIG. 1 is inserted.

[Explanation of symbols]

1 body 3 discs 5 trays 5A mounting part 5a inner wall surface 5b inner wall surface 5c inner wall surface 5d inner wall surface 5e escape port 6 Front panel 6a Outlet

Continued front page    (72) Inventor Takeshi Aoki             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. F-term (reference) 5D046 AA16 CB11

Claims (2)

[Claims] 1. A tray, which is provided so as to be displaceable between an operating position housed inside a main body and a disc attaching / detaching position projected to the outside, and which has a placing portion on which a disc is placed is formed. A disk device provided with an escape port for allowing air to escape to the outside of the main body on an inner wall surface forming the mounting portion. 2. An air outlet is formed on the front surface forming the inner wall surface, and an outlet for connecting the outside and the inside is provided on the front panel facing the escape opening.
The disk device described in 1.