JP2000057678A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk device capable of keeping the wide space between a disk in the driving operation and disks positioned above and below this disk without increasing the size of a magazine and also capable of securing the sufficiently high damping space even though the structure for supporting only a disk driving part by a damper is adopted. SOLUTION: A slider 40 is moved to the direction Y2 by the moving force of a tray transfer means for pulling out a tray T in the magazine M, and a tray Tb positioned above a selecting tray Ta is lifted up by a tray pressurizing part 40d. The selecting disk Da held by a driving unit U is thereby rotationally driven keeping the enough space in between the disks positioned above and below this disk. The elastically supporting effect by the damper 12 is satisfactorily demonstrated accordingly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive for use in a vehicle or the like, and more particularly, to a disk drive in which one of disks mounted on a tray is selected and held by a disk drive.

[0002]

2. Description of the Related Art As a disk device for a vehicle or the like, there is a disk selection type disk device that selects and drives any one of a plurality of disks. FIG. 5 is a side view showing the structure of a conventional disk selection type disk device. In FIG. 5, a plurality of trays T are housed in a magazine M such that the trays T can be pulled out, and a disc D such as a CD or DVD is placed on each tray T. Magazine M
A disk drive unit 41 is provided at a position opposite to. The disk drive 41 includes a drive base 42
Are elastically supported by the damper 43. On the drive base 42, a spindle motor 44 and a turntable 45 rotationally driven by the spindle motor 44 are provided.
And an optical head for scanning the recording surface of the disk D is mounted. A clamp arm 47 rotatably supported by a shaft 47 a is provided on the drive base 42, and a clamper 46 is rotatably supported at the tip of the clamp arm 47.

When the disk D is not held by the disk drive 41, the tray in the magazine M is selected by moving the disk drive 41 up and down in the Z direction. When the selection operation is completed, the disk drive unit 41 stops, and the selected tray Ta in the magazine M is pulled out in the Y1 direction by a tray transfer unit (not shown). When the disk Da on the selected tray Ta is set on the turntable 45 and clamped by the clamper 46, the empty selected tray Ta is returned into the magazine M. Then, the disk Da set on the turntable 45
Is driven to rotate in a state where it partially overlaps with the other trays T and disks D in the magazine M, and performs reproduction and recording operations.

[0004]

However, in the conventional disk device shown in FIG. 5, in order to rotate the disk Da held on the turntable 45, the disk Da is rotated.
Needs to be separated from the selection tray Ta returned to the magazine M, and a part of the disk Da held on the turntable 45 enters the magazine M. Δa between the disk T and the disk D and the distance δb between the disk Da and the disk D therebelow.
It is necessary to secure a wide range. In particular, in the case of a vehicle, the disk drive unit 41 is elastically supported by the damper 43, and when the vehicle body vibrates, the disk drive unit 41 elastically vibrates up and down (Z direction), and the disk drive unit 41 is mounted on the optical head. Reduces the effects of vibration. Therefore, it is necessary to ensure a sufficiently large upper and lower gap of the disk Da during driving.

However, in practice, the distance for lifting the driven disk Da from the selection tray Ta cannot be increased. If the distance is increased, the gap δa between the driven disk Da and the tray T adjacent thereto is shortened. turn into. Therefore, in the disk device having the structure shown in FIG.
The gap between the trays T in the magazine M is made sufficiently large, or the disk drive unit 41 is not supported by the damper 43, but the disk drive unit 41 and the magazine M are not supported.
Must be installed on a common chassis so that the disk drive unit 41 and the magazine M do not individually move, and the entire chassis is supported by a damper in a housing.

However, if the interval between the trays T is widened as described above, the magazine M becomes large, and this magazine M
It is necessary to increase the size of the housing into which the is inserted. Even in a structure in which the entire chassis on which the disk drive unit 41 and the magazine M are mounted is supported by a damper, it is necessary to similarly increase the size of the housing, which makes it difficult to reduce the size of the entire apparatus.
The present invention has been made to solve the above-mentioned conventional problems, and it is possible to increase a space between a disk being driven and disks located above and below the disk without enlarging the magazine, and only a disk drive unit is provided with a damper. It is an object of the present invention to provide a disk device that can secure a sufficient vibration-proof space even when a supporting structure is adopted.

[0007]

According to the present invention, there is provided a disk mounting section on which a plurality of trays on which disks are mounted are stacked, a turntable on which the center of the disk is mounted, and a head for scanning the disk. A disc driving unit having at least one of the disc setting unit and the disc driving unit moved in the direction in which the disks are arranged to select a disc in the disc setting unit; and a selection tray for moving the selection tray from the disc setting unit to the disk driving unit. Tray transfer means for returning the selected tray to the disk installation portion after the disk on the selected tray is held on the turntable, and the disk held on the turntable is mounted on the disk A disk that is driven to rotate while partially overlapping the other disks stored in the unit In click device, after the selected tray is returned or when returned to the disk installation portion,
A tray pressing means is provided for pressing a tray adjacent to the selected tray away from the selected tray to expand the space between the disc held on the turntable and the disc on the tray adjacent to the turntable. Is what you do.

[0008] The disk installation section may be provided in a housing, and a disk may be inserted one by one from outside into a tray in the disk installation section. May be mounted in a magazine in which is stored. Disc is CD or DV
D, etc., and the disk drive unit reproduces, records, or records and reproduces signals recorded on the disk.

In the present invention, the disc on the selected tray is held on the turntable and at least immediately above the selected tray by the tray pressing means at the same time as or immediately after the selected tray is returned to the disc installation section. Trays are lifted and the trays, preferably above and below the selected tray, are pressed away from each other. Therefore, a sufficiently large space can be secured between the disk held and rotated on the turntable and another adjacent disk in the disk installation portion, and the selected disk is brought into contact with another disk. It can be driven without rotation.

[0010] For example, the tray transfer means has a hook engaged with the selected tray and a motor for reciprocating the hook between a disk installation section and a disk drive section. When the tray is returned to the disk installation portion, it is preferable that the tray pressing means be moved in the direction of pressing the tray by the power of the motor. In the above structure, since the tray pressing means is operated using the power of the tray transfer means, a separate drive source for operating only the tray pressing means is not required.

In this case, when the hook moves in the direction of the disk drive, the tray pressing means stops at a standby position away from the tray, and the hook returns in the final stroke of the return operation of the hook. A structure may be employed in which the tray pressing means is started in the tray pressing direction from the standby position by a moving force. In this structure, since the tray pressing means is operated only when necessary, the load on the motor provided in the tray transfer means can be reduced.

Further, the tray pressing means is disposed on both sides of the tray, and when one of the tray pressing means is driven in the tray pressing direction by the return movement force of the hook, the driving force of the tray pressing means is reduced. Power transmission means for transmitting the other tray pressing means to the other tray pressing means and moving the other tray pressing means in the tray pressing direction may be provided. In this way, the pair of tray pressing means can be driven using the power of the tray transfer means provided only on one side, and the tray can be pressed on both sides by the tray pressing means. Can be reliably separated from the disk being driven.

Further, in the present invention, it is preferable that each tray located in the disk installation section has a recessed recess formed in front of the drawer side so as not to overlap the disk held on the turntable. By forming the recesses in the tray in this manner, the structure in which the tray in the disk installation portion does not hit the disk held by the turntable and being driven further increases the space between the disk being driven and the disks above and below it. Can be spread.

[0014]

FIG. 1 is a plan view showing the entire structure of a disk drive according to the present invention, FIGS. 2 and 3 are enlarged plan views showing details of a tray transfer means, and FIG. It is a side view. The housing 1 of the disk device has a so-called 1DIN size and is buried in a console panel of an automobile. A decorative panel called a nose 2 is attached to a front surface of the housing 1.

An area in front of the housing 1 and located on one side in the width direction is a disk mounting portion 1a. A magazine M is inserted into the disk mounting portion 1a from an insertion opening opening in the nose 2 in the direction of an arrow. Will be loaded. A plurality of trays T are housed in the magazine M so as to be able to be pulled out in the Y1 direction, and a disc D is set on the trays T.
The disk D is a CD, a DVD, or the like. In the following, of the plurality of trays T in the magazine M, the one pulled out by the tray transfer means 3 is referred to as a selected tray Ta,
The disk placed thereon is called a selected disk Da. Further, a tray located above the selection tray Ta is indicated by Tb, and a disc placed thereon is indicated by Db.

As shown in FIG. 1, all the trays T in the magazine M have the same shape, and a central concave portion T1 cut out in a U-shape is formed at the center portion, and is set on the tray T. The center hole D1 of the disk D is located in the center recess T1. An escape recess T2 is formed at the front edge of the tray T in the pull-out direction (Y1 direction).

When the selected disk Da is held on the turntable 14 of the drive unit U, the selected disk D
a is located in the magazine M and overlaps with the other discs D in the magazine M, the escape recesses T2 formed in the tray T in the magazine M
The selected disk Da being driven, which is held in the drive unit U, does not overlap any of the trays T in the magazine M. A transfer recess T3 is formed on the side of each tray T. The edge of the transfer recess T3 on the Y1 side is a drawer side press side T3a, and the edge of the Y2 side is a return side press side T3.
3b.

An elevating chassis 10 is provided in a corner on the rear side of the housing 1. The elevating chassis 10 has a shape that does not overlap the magazine M mounted on the disk installation part 1a in a plan view, and is supported so as to be able to move up and down in the height direction (Z direction) of the housing 1. A selection driving unit 10A is provided in the housing 1, and the lifting and lowering chassis 10 is moved up and down in the Z direction by the selection driving unit 10A, so that a tray T in the magazine M is selected.

The selective driving means 10A is composed of a screw shaft extending in the Z direction and driven to rotate, and a female screw member held by the lifting chassis 10, or a pantograph type provided below the lifting chassis 10. Various mechanisms can be employed, such as a link mechanism described above, or a method in which the lifting chassis 10 is driven to move up and down by a movable slider that moves in the Y1-Y2 direction with an inclined groove. The lifting / lowering chassis 10 has a tray transfer means 3 on one side of the tray T withdrawal direction (Y direction) and a guide 4 on the other side.
Extend parallel to each other.

FIGS. 2 and 3 show the tray transfer means 3 for each constituent member. As shown in FIG. 2, a bent portion 10a is formed on the side of the elevating chassis 10, and a long hole 10 extending in the Y1-Y2 direction is formed on the bottom inside the bent portion 10a.
b is formed. A pair of bearings 31 and 32 are fixed to the tray transfer means 3, and a screw shaft 33 is rotatably supported between the bearings 31 and 32. A pinion gear 34 is fixed to an end of the screw shaft 33 on the Y1 side. A transfer motor 35 is mounted on the lifting chassis 10.
Is fixed, and a worm gear 36 fixed to an output shaft of the transfer motor 35 meshes with the pinion gear 34.

A transfer body 37 is attached to the screw shaft 33. A female screw hole is opened in the transfer body 37, and the female screw hole is screwed to the screw shaft 33. A sliding protrusion 37a is integrally provided on the lower surface of the transfer body 37, and the sliding protrusion 37a is inserted into the elongated hole 10b. The screw shaft 3 is driven by the transfer motor 35.
3 is driven to rotate, the transfer body 37 is
In a state where the rotation is prevented by the engagement between the long hole 7b and the long hole 7a, the movable member is moved in the Y1-Y2 direction.

A hook 37b is formed integrally with the transfer body 37. When the lift chassis 10 is moved up and down in the Z direction by the selection driving means 10A, the hook 37b of the tray transfer means 3 which moves up and down together with the lift chassis 10 is located at a position. It moves within the transfer recess T3. When the lifting chassis 10 stops at a predetermined height, the hook 37b is moved to the transfer recess T of the selection tray Ta.
3 located.

As shown in FIG. 3, the tray transfer means 3 is provided with a slider 40. The slider 40 is disposed on the screw shaft 33,
It is formed by bending a metal plate into an L-shaped cross section. The slider 40 has a pair of sliding claws 40a, 40a protruding therefrom. The sliding claws 40a are guided by slits formed in the bent portion 10a of the elevating chassis 10 so that they can move in the Y1-Y2 direction by a short distance L1. Has become. A return spring 38 is hung between the slider 40 and the elevating chassis 10, and the slider 40 is urged in the Y1 direction by the return spring 38. The slider 40 has Y1-Y2
A long hole 40b extending in the direction is formed, and a driving projection 37c integrally formed on the upper surface of the transfer body 37 is inserted into the long hole 40b.

The slider 40 is provided with a tray pressing portion 40d constituting a tray pressing means.
As shown in the figure, the tray pressing portion 40d is provided with a leading end T on the drawer side of the tray Tb located above the selected tray Ta.
It is provided at a height position facing 4a. That is,
The selection tray Ta pulled out toward the Y1 side by the hook 37b of the transfer body 37 passes under the tray pressing portion 40d of the slider 40.

A slider 39 is also provided inside the guide 4 of the lifting chassis 10. The slider 39 has sliding claws 39a, 39a formed integrally and bent.
The sliding claws 39a, 39a are inserted into slits formed in the guide 4, and the slider 39 is slidable in the Y1-Y2 direction with respect to the guide 4. At the end on the Y2 side of the slider 39, a tray pressing portion 39b constituting another tray pressing means is formed. The tray pressing portion 39b is provided at a height position facing the leading end T4b of another tray Tb located above the selected tray Ta. The selected tray Ta pulled out in the Y1 direction by the hook 37b is
Pass under 9b.

The slider 40 is provided with a connecting piece 40e bent below the moving area of the selection tray Ta, and the other slider 39 is also provided with a connecting piece bent below the moving area of the selection tray Ta. 39c is provided.

A link 41 is rotatably supported by a pin 42 at the bottom of the elevating chassis 10, and one end of the link 41 is connected to the driving piece 40e by a connecting pin 41a. A link 43 is rotatably supported by a pin 44 at the bottom of the lifting chassis 10.
Is connected to the connecting piece 39c by a connecting pin 43a. Between the links 41 and 43, X1 is provided by pins 46, 46 provided at the bottom of the lifting chassis 10.
A transmission link 45 slidably supported in the -X2 direction is provided, a pin 47 provided on the link 41 is inserted into an elongated hole of the transmission link 45, and a pin 48 provided on the other link 43 transmits. The link 45 is connected to the long hole.

The link 41, the link 43 and the transmission link 45 constitute a power transmitting means for transmitting power between the slider 40 constituting one tray pressing means and the slider 39 constituting the other tray pressing means. Have been. This power transmission means is located below the movement area of the selected tray Ta so as not to hinder the movement of the selection tray Ta pulled out in the Y1 direction.

A drive unit (disk drive unit) U is provided on the elevating chassis 10. A drive base 11 is elastically supported on the lifting chassis 10 by dampers 12, 12, 12. Drive base 1
A spindle motor 13 is fixed on 1, and a turntable 14 is fixed to a rotation shaft 13 a of the spindle motor 13.

As shown in FIG. 1, a pair of guide shafts 15a and 15b are fixed on the drive base 11 in parallel, and the optical head 16 is guided by the guide shafts 15a and 15b to move in the Y1-Y2 direction. It is movably supported.
A light emitting element, a light receiving element, and other optical elements are housed in the optical head 16, and an objective lens 16a for irradiating the recording surface of the disk D with laser light is provided.

As shown in FIG. 1, a head transfer means 17 is provided outside the guide shaft 15a. The head transfer means 17 is provided with a screw shaft 19 extending parallel to the guide shaft 15a, and the optical head 16 is provided with a female screw member (not shown) which meshes with the screw shaft 19. The head transfer means 17 is provided with a threat motor 18.
The rotation force of the pinion gear 18 a provided on the output shaft 8 is reduced by the reduction gear and transmitted to the screw shaft 19. Threat motor 18 of the head transfer means 17
When the screw shaft 19 is rotated by this, the optical head 16 meshing with the screw shaft 19 is sent in the inner peripheral direction (Y2 direction) and the outer peripheral direction (Y1) direction.

As shown in FIG. 4, a clamper 21 faces the turntable 14. This clamper 21
It is rotatably supported at the tip of the clamp arm 22. A bent portion 22 is provided at the base end of the clamp arm 22.
a is provided, and the bent portion 22a is
The support bracket 11a bent from 1 is rotatably supported by a support shaft 23. An urging force of an urging member such as a torsion spring or a coil spring acts on the clamp arm 22, and the clamp arm 22 is constantly urged in a downward direction (clamp direction) toward the drive base 11. . The drive base 11 is provided with a clamp release member (not shown), and the clamp release member drives the clamp arm 22 in the clamp release direction.

Next, the operation of the disk device shown in FIGS. 1 to 4 will be described. In a state where all the disks D and the trays T are stored in the magazine M, the tray in the magazine M is selected. This selection operation is performed by moving the lifting chassis 10 up and down in the Z direction by the selection driving means 10A. When the turntable 14 provided on the drive base 11 on the lifting chassis 10 reaches a height position at which the selected disk Da can be held, the lifting drive of the lifting chassis 10 by the selective driving means 10A stops. At this time, the clamp arm 2 of the drive unit U
2 rotates upward, and the clamper 21
Move away from

When the lifting chassis 10 stops at a predetermined height, the hook 37b of the tray transfer means 3 is located at the position shown in FIGS. 2 and 3 in the transfer recess T3 of the selected tray Ta. The tray pressing portion 40d formed on the slider 40 is connected to the tip T4a of the tray Tb on the selected tray Ta.
At the standby position facing the front of the other slider 39
Is also at the standby position facing the front of the tip T4b of the tray Tb above the selected tray Ta. At this time, as shown in FIG. 3, the slider 40 has been moved in the Y1 direction by the return spring 38, and the link 41, the link 43, and the transmission link 45 are in the positions shown by solid lines in FIG.

When the tray selecting operation is completed and the lifting chassis 10 stops at a predetermined height, the transfer motor 35 of the tray transfer means 3 starts, the screw shaft 33 rotates, and the transfer body 37 is driven in the Y1 direction. Is done. The pulling side pressing side T3a of the selection tray Ta is pulled in the Y1 direction by the hook 37b of the transfer body 37, and the selection tray Ta is pulled out in the direction of the drive unit U. At this time, the driving protrusion 37c of the transfer body 37 is connected to the elongated hole 40 formed in the slider 40.
Since the slider 40 slides in the direction b1 in the Y1 direction, the slider 40 remains stopped at the standby position in FIG.

When the hook 37b reaches the position shown in FIG. 2, the selection tray Ta is pulled in the drive unit U to the position shown by the dashed line, and the center hole of the selection disk Da coincides with the turntable 14. At this time, the clamp arm 22 rotates toward the drive base 11, and the turntable 14 and the clamper 21 clamp the center hole of the selected disk Da. Selection disk Da is turntable 1
When it is clamped on 4, the transfer motor 35 rotates in the reverse direction, and the screw shaft 33 is driven to rotate in the direction opposite to that when the tray is pulled out. As a result, the transfer body 37 is driven in the Y2 direction, and the hook 37b moves the return side pressing side T3b of the selection tray Ta to the Y2 direction.
Press in the direction. The pushing force returns the selection tray Ta into the magazine M. When the transfer body 37 returns to the position in FIG. 3, the drive protrusion 37c formed on the transfer body 37 is moved to the end of the elongated hole 40b of the slider 40 on the Y2 side. To the department.

Further, the screw shaft 33 is continuously driven by the transfer motor 35, and the transfer body 37 is moved from the above position to Y.
It moves in two directions to the position. Hook 37b during this time
When the return side pressing side T3b of the selected tray Ta is pushed in the Y2 direction and the transfer body 37 reaches the position, the selected tray Ta is completely returned into the magazine M. Further, while the transfer body 37 moves from position to position, the drive projection 37c provided on the transfer body 37
Is pushed in the Y2 direction, and the slider 40 is moved in the Y2 direction by the distance L1. Therefore, as shown in FIG. 4, the tray pressing portion 40 formed on the slider 40
The d slides on the tapered surface of the tip T4a of the tray Tb on the selected tray Ta and enters the lower side of the tray Tb, and the tray Tb is pushed up.

When the slider 40 is moved by the distance L1 in the Y2 direction, the link 41 connected to the slider 40 rotates counterclockwise as shown by a broken line, and the transmission link 45 is pushed in the X2 direction. And this transmission link 4
5, the link 43 is rotated clockwise as shown by the broken line, and the other slider 39 is moved in the Y2 direction. Therefore, the tray pressing portion 39b formed on the slider 39 is moved to the tip T of the tray Tb on the selected tray Ta.
4b, the tray Tb is lifted by the tray pressing portion 39b.

As described above, when the selected disk Da is set on the turntable 14 of the drive unit U and the selected tray Ta is completely returned into the magazine M, both sides of the tray Tb on the selected disk Ta are placed on the trays. It is lifted by the pressing portion 40d and the tray pressing portion 39b. Therefore, the disk Db on the tray Tb is greatly inclined as shown in FIG. 4, and a wide space is secured between the disk Db and the selected disk Da.

In this embodiment, as shown in FIG. 4, the leading ends T4a, T4 of the tray Tb on the selection tray Ta are used.
By forming w into a wedge shape, the tray pressing portion 40
The tray Tb is pushed up when d and 39b move in the Y2 direction.
The tray Tb may be pushed up by providing a tapered surface at the end on the Y2 side of d and 39b.

Since the leading end of each tray T on the drawer side is an escape recess T2, the selected tray Ta does not overlap with the selected disk Da, and the trays T located above and below the selected disk Ta are not overlapped.
Does not overlap with the selected disk Da. As described above, a part of the selected disk Da on the turntable 14 is inserted into the magazine M, but the tray is not positioned above and below the selected disk Da, and the disk Db is inclined upward. The disk Da is driven to rotate while a large space is secured above.

In this embodiment, the drive base 11 of the drive unit U is elastically supported by the dampers 12 and 12, and when the vehicle body is vibrated, the drive base 11 and the selection disk Da mounted on the drive base 11 move up and down. Vibrates elastically. However, since a large space is formed between the upper and lower disks in the magazine M and the selected disk Da, there is room for the vibration in the vertical direction, and the elastic support effect by the damper can be sufficiently exhibited. .

[0043]

As described above, according to the present invention, the disk held by the disk drive unit is driven to rotate while a part of the disk is left in the magazine. A large space can be formed between them. Therefore, even if the disk drive unit supported by the damper vibrates, a sufficient vibration space for the disk being driven can be secured. In addition, the magazine can be made thinner, and the entire device can be made thinner.

[Brief description of the drawings]

FIG. 1 is a plan view showing a disk drive according to the present invention;

FIG. 2 is an enlarged plan view showing components of a tray transfer unit of the disk device shown in FIG.

FIG. 3 is an enlarged plan view showing constituent members of a tray transfer unit of the disk device shown in FIG. 1;

FIG. 4 is a side view taken along the arrow IV in FIG. 1;

FIG. 5 is a side view of a conventional disk device.

[Explanation of symbols]

 D disk Da selection disk T tray Ta selection tray M magazine U drive unit 1 housing 2 nose 3 tray transfer means 4 guide 10 elevating chassis 11 drive base 12 damper 13 spindle motor 13a rotation axis 14 turntable 16 optical head 21 clamper 22 clamp Arm 37 Transfer body 37b Hook 39 Slider 35 Transfer motor 39b Tray pressing part 40 Slider 40d Tray pressing part 41, 43, 45 Link constituting power transmission means

Claims (5)

[Claims] A disk drive unit having a disk mounting unit on which a plurality of trays on which disks are mounted are stacked, a turntable on which the center of the disk is mounted, and a head for scanning the disk; Selection drive means for selecting at least one of the disks in the disk installation section by moving at least one of the installation section and the disk drive section in the direction in which the disks are arranged; and pulling out a selection tray from the disk installation section toward the disk drive section. Tray transfer means for returning the selected tray to the disk installation portion after the disk is held on the turntable is provided, and another disk in which the disk held by the turntable is stored in the disk installation portion is provided. In a disk drive that is driven to rotate while partially overlapping the disk, When or after the tray is returned into the disc installation section, the tray adjacent to the selected tray is pressed so as to be separated from the selected tray, and the disc held on the turntable and the disc on the tray adjacent to the turntable are pressed. A disk device comprising a tray pressing means for expanding a space. 2. The tray transfer means has a hook engaged with a selection tray, and a motor for reciprocating the hook between a disk installation section and a disk drive section, and the hook is selected by a return operation of the hook. 2. The disk device according to claim 1, wherein when the tray is returned into the disk installation section, the power of the motor causes the tray pressing means to move in a direction of pressing the tray. 3. When the hook moves in the direction of the disk drive unit, the tray pressing means stops at a standby position away from the tray, and in the final stroke of the return operation of the hook, the return movement force of the hook. 3. The disk device according to claim 2, wherein said tray pressing means is started from said standby position in a tray pressing direction. 4. The tray pressing means is disposed on both sides of the tray, and when one of the tray pressing means is driven in the tray pressing direction by the return movement force of the hook, the driving force of the tray pressing means is reduced. 4. The disk drive according to claim 3, further comprising a power transmission unit that transmits the other tray pressing unit in the tray pressing direction by transmitting the power to the other tray pressing unit. 5. The tray according to claim 1, wherein each of the trays located in the disk setting portion has a recessed portion formed at a front side on a drawer side so as not to overlap the disk held on the turntable. Disk device.