JPH10228698A - Disk drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately chuck a CD-ROM disk even when a disk drive device is vertically placed. SOLUTION: The CD-ROM disk 14 is chucked by magnetically joining a turntable 12 and a chucking disk 16. On a disk plate 18 for supporting the chucking disk 16, a hook 22 as a positional control member is provided in relation to the chucking disk 16. In the vertically placed disk drive device 10, the chucking disk 16 separated away from the turntable 12 is restrained to the hook 22 and held at the specified position. That is, the chucking disk 16 is held at the position where the center shaft is aligned with a center shaft of the turntable 12. Consequently, the deviation of the centers does not occur between the turntable 12 and the chucking disk 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device, and more particularly to a disk drive device capable of accurately chucking a CD-ROM disk on a turntable arranged such that its rotation axis is horizontal.

[0002]

2. Description of the Related Art FIG. 3 shows an example of such a conventional disk drive. The disk drive device 1 has C
Turntable 3 on which D-ROM disk 2 is placed
And a chucking disk 4 disposed opposite to the chucking disk 4 to support the CD-ROM disk 2 from above, and on the outer peripheral surface of the chucking disk 4, as can be clearly understood from FIG. The tapered portion 5 is formed so that the diameter becomes smaller downward. A disk plate 6 for holding the chucking disk 4 is arranged in relation to the tapered portion 5. And this disk plate 6
The turntable 3 and the chucking disk 4 are joined to each other with their central axes substantially equal by engaging the and the tapered portion 5 with each other.

[0003] That is, as shown in FIG.
When the ROM disk 2 is not chucked (fixed), the chucking disk 4 hangs down by its own weight so as to be locked to the disk plate 6. The disk plate 6 has a circular shape in plan view,
Since the hole 7 whose diameter is slightly larger than the maximum diameter portion of the tapered portion 5 is formed, the chucking disc 4 is formed.
Is displaced toward the turntable 3, the tapered portion 5 of the chucking disk 4 engages with the disk plate 6,
Thereby, the central axis of the chucking disc 4 and the central axis of the hole 7 are made substantially equal. That is, the center deviation between the chucking disc 4 and the turntable 3 is
The correction is performed by the tapered portion 5.

Then, the turntable 3 is displaced upward, and as shown in FIG.
When chucking the
Is pressed upward by the turntable 3. Therefore, an appropriate gap is formed between the chucking disk 4 (tapered portion 5) and the disk plate 6, so that even if a disk having an eccentricity is mounted, for example, the chucking disk The disc 4 can be driven without causing the disc 4 and the disc plate 6 to interfere with each other.

[0005]

As described above, there is no problem when the disk drive device is used horizontally (see FIG. 3), but as shown in FIG. 4, the disk drive device is vertically installed. In this case, there is a problem that the chucking disc 4 is displaced downward due to its own weight when the chucking disc is not chucked, and a center shift occurs between the chucking disc 4 and the turntable 3.

That is, when the chucking state shown in FIG. 4A is released, the turntable 3 is displaced rightward as shown in FIG. 4B. In the state of FIG. 4A, the turntable 3 and the chucking disc 4
And the chucking disk 4 is displaced rightward to a position where the chucking disk 4 is locked to the disk plate 6 as the turntable 3 is displaced.
The chucking disk 4 is detached from the turntable 3 at the same time when the chucking disk 4 is locked to the disk plate 6. After the detachment, the tapered portion 5 of the chucking disk 4 comes into contact with the disk plate 6, and the chucking disk 4 is displaced in the lower left direction due to its own weight, as shown in FIG. In this state, the center deviation between the turntable 3 and the chucking disk 4 is large, and the CD-
It was impossible to chuck the ROM disk 2.

SUMMARY OF THE INVENTION It is, therefore, a main object of the present invention to provide a disk drive capable of accurately chucking a CD-ROM disk even if the disk drive is placed vertically.

[0008]

SUMMARY OF THE INVENTION The present invention provides a CD-RO
A chucking disk which is arranged above a turntable on which an M disk is mounted, and whose outer peripheral surface is formed to have a diameter decreasing downward, and a disk which holds the chucking disk with a certain clearance And a position regulating member for regulating the position of the chucking disk on the disk plate in the vicinity of the chucking disk.

[0009]

The disk plate that supports the chucking disk is provided with a position regulating member that contacts the chucking disk when the disk drive device is placed vertically and regulates its position. In other words, when removing the chucked CD-ROM disk from the vertically mounted disk drive device, the chucking disk detached from the turntable is locked to the position regulating member without displacing the position of the center axis thereof. To be configured. Therefore, since the turntable and the chucking disc are always joined to each other without generating a center shift,
The D-ROM disk can be chucked accurately.

[0010]

According to the present invention, the position of the chucking disk detached from the turntable is regulated, so that the CD-ROM disk can be accurately read even when the disk drive device is placed vertically. Can be chucked. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a disk drive device 10 of this embodiment includes a turntable 12 driven by a motor (not shown). Center hole 14a
Is formed. This projection 12a
Is partially or entirely formed of, for example, a magnet.

Above the turntable 12, the CD-
At a position facing the turntable 12 with the ROM disk 14 interposed therebetween, a chucking disk 16 that presses and holds the CD-ROM disk 14 from above when the CD-ROM disk 14 is chucked (fixed). Be placed. 1, the chucking disc 16 includes a first locking portion 16a, a tapered portion 16b, and a second locking portion 16c.
Are formed so that the diameter decreases toward the second locking portion 16c. The first locking portion 16a and the second locking portion 16c are formed in a substantially disk shape, and the second locking portion 16c has a concave portion 1 fitted with the convex portion 12a of the turntable 12.
6d is formed at the center of the second locking portion 16c and on the turntable 12 side. The chucking disk 16 is formed of a magnetic material in this embodiment, and therefore, the chucking disk 16 and the turntable 12
Are magnetically joined.

In connection with the chucking disk 16, there is provided a disk plate 18 for holding the chucking disk 16 with a certain clearance. That is, the disk plate 18 is formed with a hole 20 having a circular shape in plan view and a diameter slightly larger than the maximum diameter portion of the tapered portion 16b. The disk plate 18 is fixedly connected to the disk drive device 10 and has a hole 20.
Is configured such that the chucking disc 16 is displaced vertically.

On the upper surface of the disk plate 18 and in the vicinity of the chucking plate 16, a hook 22 is provided as a position regulating member which is a feature of the present invention, as can be clearly understood from FIG. The hook 22 is for regulating the position of the chucking disk 16 when the disk drive device 10 is placed vertically as shown in FIG. 2, and as shown in FIG. CD-
When the ROM disk 14 is not chucked (not chucked), it engages with the chucking disk 16 and, as shown in FIG.
When the chuck 4 is chucked, it is provided at a position where it is separated from the chucking disc 16 and does not interfere.

[0015] Therefore, the hook 22 is a CD-ROM.
The hooks 22 are formed integrally with the disc plate 18 with an attachment strength enough to hold the disc 14 at a predetermined position without being detached, and the hook 22 is formed in a shape that does not hinder the rotation of the CD-ROM disc 14. In addition, as shown in FIG.
It is needless to say that the hook 22 is considered so as not to adversely affect the operation of the disk drive device 10 when it is set horizontally.

In operation, as shown in FIG.
When the CD-ROM disk 14 is not chucked,
The chucking disc 16 is engaged with the hook 22 so that the center axis of the chucking disc 16 is
The chucking disk 16 is held at a position substantially equal to the central axis of the chucking disk. Then, the disk drive device 10
When the CD-ROM disk 14 is inserted into the device, the turntable 12 moves toward the chucking disk 16 (to the left in FIG. 2), and the turntable 12 and the chucking disk 16 are magnetically joined. . Even if a slight center shift occurs between the turntable 12 and the chucking disk 16, the center shift can be corrected by magnetic joining.

After joining, the turntable 12 is further displaced to a position where the second locking portion 16c of the chucking disk 16 is locked to the disk plate 18. This state is shown in FIG. 2B, and the chucking of the CD-ROM disk 14 is completed. After reading data from the CD-ROM disk 14, etc., the CD-ROM disk 14
When the disk is taken out of the disk drive device 10, the turntable 12 is displaced rightward in FIG. Since the turntable 12 and the chucking disk 16 are magnetically joined, the chucking disk 16 is displaced rightward with the turntable 12 in a state where the CD-ROM disk 14 is chucked. And
The first locking portion 16a of the chucking disk 16 is locked to the disk plate 18, and the chucking disk 16
Movement is restricted, and the chucking disc 16
Is separated from the turntable 12.

The detached chucking disc 16 falls due to its own weight, but as shown in FIG.
The first locking portion 16a of the chucking disk 16 is locked to the hook 22 provided on the disk plate 18, and the position of the chucking disk 16 is regulated. That is,
The chucking disk 16 detached from the turntable 12 can be held at a position where the center axis thereof is substantially equal to the center axis of the turntable 12. Therefore, the CD-ROM is newly added to the vertically mounted disk drive device 10.
Even when the ROM disk 14 is inserted, the center of the turntable 12 and the chucking disk 16 are securely joined without causing a center shift between the turntable 12 and the ROM disk 14.

According to this embodiment, the disk plate 1
8 is provided with a position restricting member (hook 22) for restricting the position of the chucking disk 16, and the chucking disk 16 detached from the turntable 12 is held at a predetermined position. Can be chucked accurately even when the CD-ROM is placed vertically.

In the above-described embodiment, the case where one position regulating member is provided is shown. However, a plurality of position regulating members may be provided, and the shape thereof is also shown in FIG.
However, the present invention is not limited to the embodiment shown in FIG.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is an illustrative view showing a state where the disk drive device of FIG. 1 is placed vertically.

FIG. 3 is an illustrative view showing a conventional technique;

FIG. 4 is an illustrative view showing a conventional technique;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Disc drive device 12 ... Turntable 14 ... Disc 16 ... Chucking disc 18 ... Disc plate 22 ... Hook

Claims (1)

[Claims] 1. A chucking disk which is disposed above a turntable on which a CD-ROM disk is mounted, and whose outer peripheral surface is formed to have a diameter decreasing downward.
A disc plate that holds the chucking disc with a certain clearance; and a position regulating member that regulates the position of the chucking disc near the chucking disc on the disc plate. A disk drive device, characterized in that: