JP2003077205A - Disk drive unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly and surely execute centering of a turntable and a disk of a disk drive unit. SOLUTION: This disk drive unit comprises a turntable 25 on which the disk 24 conveyed by a tray is placed and a clamper 30 which compression bonds and holds the disk 24 placed on the turntable 25 and centers the disk 24 by releasing compression bonding and holding of the disk 24 by the turntable 25 and the clamper 30 right after compression bonding and holding the disk 24 placed on the turntable 25 and again compression bonding and holding the disk 24 by the turntable 25 and the clamper 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive apparatus suitable for being applied to a device capable of recording or reproducing a signal on a disk such as a CD or a DVD.

[0002]

2. Description of the Related Art Conventionally, in a CD player, a DVD player, etc., a disc changer has been employed which can accommodate a plurality of discs in a tray and can freely select and reproduce any disc. For example, in Japanese Unexamined Patent Application Publication No. 2001-60349, a disk drive device that has a disk arrangement table that can be pulled out from the outer casing, and that arbitrarily selects and reproduces a plurality of disks arranged in this disk arrangement table is presented. Has been done.

In this disk drive device, when an arbitrary disk is selected from a plurality of disks stored in the disk placement table and placed on the turntable, the disk is pressed by a clamper between the disk and the turntable. It is designed to be held.

[0004]

As described above, in the conventional disk drive device, when a plurality of disks housed in the disk placement table are housed in the outer casing and any disk is placed on the turntable, It is necessary to align the hole provided at the center of the disc with the central axis of the turntable.

However, the so-called centering in which the center of the disc and the center axis of the turntable do not coincide with each other depending on the time when the disc arranging table is transported in the outer casing or the position of the disc housed in the disc arranging table is not proper. Sufficient conditions occur.

As described above, when the center of the disc does not coincide with the center axis of the turntable and the centering is insufficient, the disc is deformed when the disc is crimped by the clamper and the turntable. If it occurs or if it is rotationally driven for reproduction without being properly placed on the turntable, there is a problem that the optical pickup cannot properly trace the recording track of the disc.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a disk drive device capable of performing centering of a turntable and a disk quickly and reliably.

[0008]

DISCLOSURE OF THE INVENTION A disk drive device according to the present invention comprises a turntable on which a disk is mounted, and a disk mounted on the turntable which is arranged so as to face the turntable. A clamper capable of being crimped together with a table, a clamp means for crimping and sandwiching a disc between the clamper and the turntable by moving one or both of the clamper and the turntable, and the clamp means, Prior to the crimping and clamping operation, a pre-compression operation for temporarily crimping the disk with the clamper and the turntable and a clamp control means for performing a pre-compression releasing operation for releasing the pre-compression are provided. Characterize.

Further, the disk drive device of the present invention crimps and clamps the tray for carrying the disk, the turntable on which the disk carried by the tray is placed, and the disk placed on the turntable. Immediately after the clamper and the disc mounted on the turntable are crimped and clamped by the clamper, the crimping and clamping of the disc is released by the turntable and the clamper, and the disc is crimped and clamped again by the turntable and clamper. And a drive unit.

The drive portion of the disk drive device according to the present invention includes a cam gear which is rotated by a drive source, a pair of cam grooves provided in the cam gear, and one of the cam grooves, which is guided and swung to move. It is characterized by comprising a cam lever for moving the tray and an up-down lever for moving the turntable up and down by being guided and swung by the other cam groove of the cam grooves.

Further, the turntable of the disk drive apparatus of the present invention is characterized in that the turntable is driven in the disk clamping direction and the anti-clamping direction in accordance with the disk transport operation of the tray by the drive section. .

With the disk drive device of the present invention, centering of the disk and the turntable when the disk is crimped and clamped by the turntable and the clamper can be easily and surely performed.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a top view showing a disk drive device according to an embodiment of the present invention, showing a closed state in which a tray 10 is housed in a housing. 2 is a top view showing the tray table 11 and the clamp holder 12 of FIG. FIG. 3 is a top view showing an open state in which the tray 10 of FIG. FIG. 4 is a side view of the disk drive device showing a closed state. FIG. 5 is FIG.
The side view corresponding to FIG. Figure 6
FIG. 4 is a timing chart showing mode transition. Figure 7
10 to 10 are top views in the modes 1 to 4 of FIG. 6, respectively, and the tray 10 of FIG. 3 is excluded.
FIG. 11 is an explanatory diagram for explaining changes in the pickup device for each mode of the timing chart of FIG.
(A) to (e) show changes over time.

In this embodiment, the pickup device is raised by a predetermined amount when the tray is opened while the disc is not being reproduced, and when the disc is placed on the turntable while the tray is housed in the main body. The centering of the turntable can be performed easily and surely.

4 and 5 show a state in which the housing 14 of the disk drive device is placed on the base 13. A chassis 15 is provided in the housing 14, and the housing 1
The tray 10 is attached to the chassis 15 on the front side of No. 4. The tray 10 is disk-shaped as shown in FIG. 1, is supported by the chassis 15, is pulled out from the front of the housing 14, and is exposed to the outside of the housing 14 (open state) as shown in FIG. 4, as shown in FIG.
It is designed to be stored inside (closed state).

A tray table 11 is arranged on the tray 10. The substantially circular tray table 11 has a shaft 9
It can be rotated around the center of the disc and can store a disc such as a CD (compact disc) or DVD disc on the surface.
It has one storage part 8 (see FIG. 1). By rotating the tray table 11, a predetermined storage portion 8 can be positioned on the pick-up device 26, and another predetermined storage portion 8 can be arranged on the front surface side of the housing 14. .

The clamp holder 12 is attached to the end of the chassis 15 on the rear side of the housing 14 by a screw portion 12a. The clamp holder 12 has a clamper 30
As described later, the disk 24 (one-dot chain line) on the storage unit 8 located on the pickup device 26 is attached to the clamper 30 and the turntable 25 (see FIG. 5).
It can be held between and.

When the tray table 11 and the clamp holder 12 shown in FIG. 1 are removed, the state shown in FIG. 2 or 3 is obtained. 2 shows a state where the tray 10 is stored in the housing 14 (closed state), and FIG.
4 shows a state of being exposed to the outside (open state). The transition between the closed state and the open state depends on the motor 16
Done by

As shown in FIG. 3, the motor 16 is fixed to the front end portion of the chassis 15. Tray 10 of FIG.
When removed, the state shown in FIG. 7 is obtained. This Figure 7
The vicinity of the transport mechanism of the tray 10 and the pickup device 26 is shown.

The motor 16 has a rotation shaft arranged in the left-right direction of the housing 14 in the drawing, and a worm 17 is attached to the rotation shaft. The worm 17 meshes with a large-diameter gear of a relay gear 18 rotatably attached to a shaft planted in the chassis 15. The small-diameter gear of the relay gear 18 meshes with a cam gear 19 rotatably provided on a shaft embedded in the chassis 15. The rotation of the motor 16 is performed by the cam gear 1 through the worm 17 and the relay gear 18.
9 is transmitted.

A cam groove 19 is formed on the surface of the cam gear 19.
a and a cam groove 19b are provided respectively. Cam groove 1
A pin 20a provided on the cam lever 20 is adapted to engage with 9a. The cam lever 20 is a pin 2 which is engaged with the cam groove 19 in response to rotation of the cam gear 19 around a shaft 20b planted in the chassis 15 as a swing center.
0a swings when it is guided and moved.
In other words, the cam lever 19 swings as the cam gear 19 rotates as the motor 16 rotates. A pin 20c is planted at the tip of the cam lever 20.
An idle gear 21 is attached rotatably about 0c as an axis.

The idle gear 21 at the tip of the cam lever 20 meshes with the arcuate rack 15a, and the arcuate rack 15a is fixed on the chassis 15 along the movement locus of the tip of the cam lever 20. .

That is, when the cam gear 19 is rotated counterclockwise from the state shown in FIG. 7 by, for example, rotating the motor 16 forward, the cam lever 20 rotates counterclockwise about the swing shaft 20b and the idle gear 21. Also rotates counterclockwise while moving along the arcuate rack 15a.
Move to the rear side. Conversely, when the motor 16 is rotated in the reverse direction, the idle gear 21 moves to the front side of the housing 14 along the arcuate rack 15a while rotating in the clockwise direction.

On the other hand, as shown in FIGS. 2 and 3, on the back side of the tray 10, an arcuate rack 10e is fixedly installed at a position corresponding to the idle gear 21, and the arcuate rack 10e is mounted on the idle gear 21. Meshes with. The idle gear 21 moves counterclockwise on the arcuate rack 10e to the front side of the housing 14, and rotates clockwise to move on the arcuate rack 10e to the rear side of the housing 14. To do.

Since the arcuate rack 15a is fixed to the chassis 15 and the arcuate rack 10e is fixed to the tray 10, the tray 10 is moved to the chassis 15 by rotating the idle gear 21 counterclockwise. The tray 10 is moved to the front side of the chassis 15 by moving the tray 10 to the rear side and rotating clockwise.

That is, when the motor 16 is normally rotated from the state of FIG. 7 to rotate the cam gear 19 counterclockwise,
The cam lever 20 swings counterclockwise about the swing shaft 20b, the idle gear 21 moves on the arc-shaped rack 15 while rotating counterclockwise, and the tray 10 changes from the open state to the closed state. Transition. Conversely, the motor 16
When the cam gear 19 is rotated in the clockwise direction by rotating the tray 1 in the reverse direction, the idle gear 21 moves in the front direction of the housing 14 on the arcuate rack 15a while rotating in the clockwise direction, and the tray 1
0 is moved from the closed state to the open state.

The pickup device 26 has a pickup portion 26a and a turntable 25 which are arranged on a pickup holder 29. Pickup holder 2
9 is supported by a pair of shafts 29a provided in the horizontal direction so as to be vertically swingable at the rear end of the chassis 15. At the front end of the pickup holder 29, a turntable 25 is arranged at a position facing the clamper 30 of the clamp holder 12.

The pickup holder 29 swings around the shaft 29a, and by lowering the front end thereof (down state), a gap is created between the turntable 25 and the clamper 30, and the disc 24 is turned. It becomes possible to arrange between 25 and the clamper 30. When the pickup holder 29 raises the front end up about the shaft 29a (up state), the turntable 25 and the clamper 30 are pressure-bonded to each other, and the intervening disk 24 can be held.

The pickup portion 26a is movable in the front-rear direction in the pickup holder 29, and irradiates the disk 24 rotating on the turntable 25 with laser light while moving in the radial direction. It is possible to write and read data to and from the disk 24.

At the front end of the pickup holder 29,
An engaging portion 27d is formed, and an engaging portion 27c at the rear end of the up / down lever 27 is engaged with the engaging portion 27d. The up-down lever 27 is axially supported by a shaft 27b provided at the lower end of the front end in the horizontal direction, and the engaging portion 27c can be vertically swung about the shaft 27b. Further, a pin 27a is planted upward toward the upper end of the front end of the up-down lever 27, that is, above the shaft 27b.

The pin 27a is adapted to engage with a cam groove 19b formed on the back surface of the cam gear 19. The pin 27a of the up / down lever 27 is guided by the cam groove 19b of the cam gear 19 to move, whereby the up / down lever 27 swings around the shaft 27b. That is, the motor 16
As the cam gear 19 rotates in accordance with the rotation, the up / down lever 27 swings. Up-down lever 27
The rear end side is engaged with the pickup holder 29 having the turntable 25 and the pickup portion 26a mounted thereon, and the pickup holder 29 swings up and down according to the rotation of the cam gear 19.

As shown in FIG. 7, the cam groove 19b formed in the cam gear 19 has a portion with a short diameter (hereinafter, referred to as a short diameter portion) 19bS from the rotation shaft of the cam gear 19 and a long portion (long diameter undivided). 19 bL). The pin 27a is fixed to a predetermined position on the front end of the pickup holder 29 above the shaft 27b. Pin 27a
When the pin passes through the short diameter portion 19bS of the cam groove 19b, the pin 27a is positioned substantially vertically above the shaft 27b (see FIG. 11 (e)). On the other hand, when the pin 27a passes through the long diameter portion 19bL of the cam groove 19b, the pin 27a is located on the rear end side of the position vertically above the shaft 27b (FIG. 1).
1 (b)). That is, in this case, the engagement portion 27c on the rear end side of the up-down lever 27 is located below,
The front end of the pickup holder 29 is located at the position lowered.

At this time, the force of moving the front end downward due to the weight of the pickup holder 29 is the up / down lever.
The pin 27a at the tip of 27 serves to move the pin 27a toward the rear side of the housing 14, and the pin 27a moves the short diameter portion 19 in the cam groove 19b.
It is a force to move from bS to the long diameter portion 19bL.

As shown in FIGS. 3 and 7, in the open state in which the tray 10 is exposed to the outside of the housing 14, the pin 27a is positioned in the middle of the movement from the short diameter portion 19bS to the long diameter portion 19bL in the cam groove 19b. To do. Moreover, at this midway position, the pressure angle of the cam groove 19b is set to a large value. That is, in this state, the pin 27a is moved to the long-diameter portion 1 by the weight of the pickup device 26.
Force to move to 9 bL, that is, cam gear 1
A force to rotate 9 in the counterclockwise direction acts, that is, in the open state that is not during the reproduction, the weight of the pickup device 26 assists the rotation of the cam gear 19 in the counterclockwise direction (the direction in which the tray 10 is stored). Force works,
The tray 10 can be stored with a comparatively small force.

On the contrary, when the tray 10 is moved from the closed state to the open state, a force for suppressing the clockwise rotation of the cam gear 19 is applied by the weight of the pickup device 26 immediately before the completion of the transition to the open state. ,
It is possible to brake the drawer of the tray 10 and smoothly finish the drawer of the tray 10 when the open state is completed.

When the pickup holder 29 is in the down state, the tray table 11 can be rotated even when the tray 10 is closed. In addition, the pickup holder 2
In the up state of 9, the disc 24 is the turntable 2
5 is mounted on and clamped between the clamper 30 and
The pickup section 26a becomes reproducible.

Further, a rotary switch 28 is attached to the chassis 15, and the rotary switch 28 meshes with the cam gear 19 and can output a signal according to the rotation of the cam gear 19. Various operation modes are set based on the output of the rotary switch 28.

Next, the operation of the embodiment thus constructed will be described. Each mode such as loading / unloading of tray 10 and reproduction is performed according to the mode transition diagram of FIG. In FIG. 6, the mode 1 is the open state of the tray 10, the mode 2 is the closed state of the tray 10, and the mode 3 is the tray 1
0 is closed and disk 24 is turntable 25
It is mounted on a disc and can be played by the pickup device 26 in a clamped state (closed / clamped state).
4 is clamped, tray 10 is open (open clamped), and mode 5 is tray 10
Shows the rearranged state in which the clamped state of the disk 24 is once released in the closed state.

7 to 10 correspond to the modes 1 to 4 of FIG. 6, respectively. The states of the pickup device 26 in modes 1 to 4 are shown in FIG.
11 (a), FIG. 11 (b), and FIG. 11 (e).

The transition from modes 1 to 4 is performed in conjunction with the counterclockwise rotation of the cam gear 19. That is, the tray 10 is moved and the pickup device 26 (up / down lever 27) is moved up and down in association with the counterclockwise rotation of the cam gear 19 from the open state of the tray 10, and the closed state of the mode 2 and the mode 3 The state shifts to the closed clamp state of and the open clamp state of mode 4. When the cam gear 19 rotates clockwise, the mode 4 is switched to the mode 1. Rotary switch 28
By detecting the rotational position of the cam gear 19, each of the modes 1 to 4 is set.

Next, detailed operation of each mode will be described with reference to FIGS. 7 to 11.

7 and 11A show the open state of the tray 10 in mode 1. The tray 10 is exposed from the front of the housing 14 to the outside and is in an open state. The up / down lever 27 is in an intermediate state between the up state shown in FIG. 11 (e) and the down state shown in FIG. 11 (b).

As described above, in the present embodiment, the pickup device 2 is in the open state which is not being reproduced.
6 is set to a state in which it is raised by a predetermined amount from a completely down state. As a result, in the open state, the pickup device 26 produces a force in the direction of lowering the tip of the pickup holder 29 by its own weight.

In mode 1, the tray table 11
Can be rotated. The operator can place the disk 24 in a desired storage section 8 by rotating the tray table 11 exposed to the front from the housing 14.
On the tray 10, the rotation position of the tray table 11 is changed, and the disk 24 is mounted in a desired storage section 8.

Tray table 1 equipped with disk 24
1 is that the operator turns on a close button provided on a front panel (not shown) or pushes the tray 10 a little by hand to make the arc-shaped rack 10e fixed to the back surface of the tray 10 idle. The gear 21 is rotated counterclockwise, and the cam lever 20 is rotated counterclockwise. As a result, the cam gear 19 also rotates counterclockwise. This rotation is detected by the rotary switch 28, and the rotary switch 28 outputs an instruction to the motor 16 for normal rotation. After that, the motor 16 rotates in the normal direction and shifts to the mode 2.

From the open state of mode 1 to mode 2
7, the pin 27a of the up / down lever 27 attached to the pickup holder 29 has a short diameter portion 19bS and a long diameter portion 19bL in the cam groove 19b of the cam gear 19, as shown in FIG. Located in the middle of. This portion has a large pressure angle, and due to the weight of the pickup device 29, the pin 27a tends to move toward the rear end direction of the housing 14, that is, the long diameter portion 19bL. The force of the pin 27a trying to move to the long diameter portion 19bL becomes a force when the cam gear 19 is assisted in the counterclockwise rotation, and the force required for storing the tray 10 is reduced. As a result, the signal of the rotary switch 28 can be changed to shift to the mode 2 simply by pushing the tray 10 with a comparatively small force. Further, the load on the motor 6 can be reduced.

When the motor 16 continues to rotate in the forward direction, the mode 2 is closed. 8 and 11B show the closed state. Tray 10
Are housed in a housing 14, as shown in FIG.
After the start of the transition from the mode 1 to the mode 2, the pin 27a of the up / down lever 27 is located at the long diameter portion 19bL. This brings the pickup holder 29 into the down state.

Since the tray 10 is housed in the housing 14, the predetermined housing portion 8 of the tray table 11 is formed as shown in FIG.
As shown in FIG. Since the pickup holder 19 is in the down state, the storage section 8
The upper disk 24 moves between the turntable 25 and the clamper 30, as shown in FIG. In the closed state, the opening portion of the center of the disc 24 is located substantially on the turntable 25.

In the closed state, since there is a gap between the turntable 25 and the clamper 30, the tray table 10 having the disk 24 mounted thereon can be rotated.
The disc 24 to be reproduced can be exchanged.

When the motor 16 is further rotated in the normal state from the closed state of mode 2, the pickup device 26 will move to the position shown in FIG.
1 (b) is changed to the state of FIG. 11 (e), and the mode 3
Move to the closed clamp state of. 9 and 1
1 (e) shows a closed clamp state. In the closed / clamped state, the pickup holder 29 is in the up state, and the turntable 25 rises to clamp the disc 24 with the clamper 30 of the clamp holder 12.

However, the centering of the turntable 25 and the disc 24 may be insufficient by simply setting the pickup holder 29 in the up state. Therefore, immediately after the shift to the mode 3, the motor 16 is rotated in the reverse direction to shift to the mode 5 near the original mode 2, and the motor 16 is again rotated in the forward direction to return to the state of the mode 3. That is, with the tray 10 in the closed state, the pickup device 26 is moved from FIG. 11 (e) to FIG.
1 (c) (the mode rearrangement state), and the pickup device 26 is changed from FIG. 11 (c) to FIG.
After (d), the closed clamp state of FIG. 11 (e) is restored.

In the rearranged state of the mode 5 shown in FIG. 11C, the tray table 11 and the disc 24, which are not shown, do not contact each other, and the clamper 30 and the disc 24 are not in contact with each other.
And are separated from each other. As a result, the pressing force of the clamper 30 on the disk 24 is reduced, and the centering of the disk 24 on the turntable 25 is facilitated. In this state, the motor 16 is rotated in the normal direction to shift to the mode 3, so that the disk 24 can be clamped between the turntable 25 and the clamper 30 in a state where the centering is normally performed.

Between mode 2 and mode 3, that is, after the tray 10 is closed and the pickup holder 29 is moved from the down state to the slightly up state,
The rotation of the tray table 11 is prohibited. Further, the up / down lever 27 is in the up state, and the disc 24
By being clamped between the turntable 25 and the clamper 30, the disc 24 can be accessed for reproduction or the like.

Further, during reproduction of the disk 24, the motor 16 is rotated forward from the closed clamp state of mode 3 to the open clamp state of mode 4. FIG. 10 shows this open clamp state.

In the closed / clamped state, when the motor 16 rotates forward, the cam lever 20 rotates clockwise by the pin 20a being guided by the cam groove 19a. As a result, the idle gear 21 rotates clockwise and moves to the front surface side of the housing 14 along the arcuate rack 15a. As a result, the arc-shaped rack 10e is also attached to the housing 1.
4 to the front side, and finally, the tray 10 is in an open state as shown in FIGS. 10 and 5.

In the open / clamp state, as shown in FIG. 10, the pin 27a of the up / down lever 27 is located at the short diameter portion 19bS. Therefore, the pickup holder 29 maintains the up state,
The disc 24 is in a clamped state and is in a reproducible state. Further, in this case, the peripheral surface of the tray table 11 is located closer to the front surface side of the housing 14 than the turntable 25, and the tray table 11 is rotatable. Therefore, in the open clamp state,
It is possible to replace the disc 24 with another one while reproducing the disc 24.

Further, it is apparent that the mode 16, the mode 2, and the mode 1 are sequentially shifted by rotating the motor 16 in the reverse direction from the mode 4. Further, in this case, it is clear that it is not necessary to perform the reciprocating operation for centering when the mode 3 is switched to the mode 2.

As described above, in the present embodiment, when the disc 24 transported on the tray 10 is held between the turntable 25 and the clamper 30, the turntable 25 is simply put in the up state. The centering of the disk 25 and the disk 24 may be insufficient. Immediately after the mode 3 shifts to the closed / clamped state, the motor 16 is rotated in the opposite direction to shift to the rearranged state of the mode 5 near the closed state of the original mode 2 and the tray table 11 and the disc 24. Does not come into contact with each other and the clamper 30 and the disk 24 are separated from each other,
The pressing force of the clamper 30 on the disk 24 is reduced, and the centering of the disk 24 on the turntable 25 can be easily performed.

The present invention is not limited to application to an apparatus in which a disc is conveyed by a tray, but includes a disc accommodating portion into which a disc is mounted by a user, and the accommodating portion does not move. It can also be applied to a device.

[0060]

As described above, according to the present invention,
When the disc conveyed on the tray is placed on the turntable and is clamped by the clamper, the centering of the opening of the disc and the center of the turntable can be easily and surely centered.

[Brief description of drawings]

FIG. 1 is a top view showing a disk drive device according to an embodiment of the present invention.

FIG. 2 is a top view showing the tray table 11 and the clamp holder 12 shown in FIG.

FIG. 3 is a top view showing an open state in which the tray 10 of FIG. 2 is exposed to the outside of the housing for disc replacement.

FIG. 4 is a side view of the disk drive device.

FIG. 5 is a side view corresponding to FIG.

FIG. 6 is a timing chart showing mode transitions.

FIG. 7 is a top view at the time of mode 1 in FIG.

FIG. 8 is a top view at the time of mode 2 in FIG.

9 is a top view at the time of mode 3 in FIG.

FIG. 10 is a top view at the time of mode 4 in FIG.

FIG. 11 is an explanatory diagram for explaining changes in the pickup device.

[Explanation of symbols]

10 ... Tray, 11 ... Tray table, 12 ... Clamp holder, 19 ... Cam gear, 19a, 19b ... Cam groove, 2
5 ... Turntable, 26 ... Pickup device, 27 ...
Up-down lever, 27a ... pin

Claims (4)

[Claims] 1. A turntable on which a disc is mounted, a clamper which is arranged so as to face the turntable, and which can crimp the disc mounted on the turntable together with the turntable, Clamping means for crimping and clamping the disc between the clamper and the turntable by moving one or both of the clamper and the turntable; and the clamper and the turn before the crimping and clamping operation. A disk drive device, comprising: a pre-compression operation for temporarily crimping the disk on a table; and a clamp control means for performing a pre-compression release operation for releasing the pre-compression. 2. A tray for carrying a disc, a turntable on which the disc carried by the tray is placed, a clamper for crimping and sandwiching the disc placed on the turntable, and a turntable mounted on the turntable. Immediately after the placed disc is crimped and clamped by the clamper, the clamp control means for releasing the crimping and clamping of the disc by the turntable and the clamper, and again for crimping and clamping the disc by the turntable and clamper, is provided. A disk drive device characterized by the above. 3. The drive unit includes a cam gear rotated by a drive source, a pair of cam grooves provided in the cam gear,
One of the cam grooves guides and swings to move the tray to move the tray, and another cam groove guides and swings to the other cam groove to move the turntable up and down. The disk drive device according to claim 2, further comprising: 4. The disk according to claim 2, wherein the turntable drives the turntable in a disk clamping direction and an anti-clamping direction in response to a disk transport operation of the tray by the drive unit. Drive.