JP2001229599A - Disk tray and disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost disk device, wherein space is saved and the number of components is reduced by providing a tray with a common step in the specified loading position of a CD or MD, identifying and discriminating the CD and the MD by an inserting/ejecting mechanism part to control insertion setting to each specified musical performance position, and simplifying the shutter mechanism of the MD and the structure of a disk playing part. SOLUTION: A tray 10 is provided with a first step 10a for loading a first disk, and a second step 10b for loading a second disk, and the center C1 of the first disk 1 loaded on the first step 10a and the center C2 of the second disk loaded on the second step 10b are shifted from each other by a distance L1 where the shutter 42b of the second disk is opened/closed in a disk inserting/ ejecting direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a disk tray on which a first disk (for example, MD) and a second disk (for example, CD) can be placed, and a disk device using the tray.

[0002]

2. Description of the Related Art A conventional disk drive comprises a storage section in which a plurality of trays are stored and a playing section for reproducing information on the disk or recording information on the disk. The tray has a diameter of 8 cm or 12 cm. CDs are used by being fitted and mounted on the CD steps of the tray, respectively.
D is rarely mixed. Further, in the conventional disk device on which the MD is mounted, the step of positioning each disk by setting the rotation center of each disk to the same position (concentric structure) so as to minimize the space dimension occupied by both the CD and MD disks. With a tray formed with
A turntable for MD is fixed to two spindle motors, a turntable adapter is mounted for playing CDs, a turntable common adapter mechanism that can support both disks is provided, and a positioning pin for positioning the MD is used for playing CDs. And a pin retracting mechanism for retracting. In this disk device, the MD is placed at a position where it does not hinder the performance of a CD occupying a larger area than the MD.
It is necessary to provide the shutter mechanism, and the shutter mechanism is complicated because of the concentric structure that minimizes the space occupied by both disks.

[0003]

In such a disk device, it is difficult and inconvenient to mix and play a CD and an MD. In a conventional disk device that plays a CD and an MD mixedly, there is a problem that the shutter mechanism of the MD is complicated as described above, and it is difficult to secure stable disk chucking. Comes out. Further, as disclosed in Japanese Patent Application Laid-Open No. 10-228702, there is a technique in which the rotation centers of a CD and an MD are shifted in advance by a tray, and a CD or an MD is played on a turntable provided for each of them. Two turntables are required, and the mechanism becomes complicated.

The present invention solves such a problem. The shutter mechanism of the MD can be easily installed, the structures of the tray storage section and the disk playing section are simplified, and the space is saved and the number of parts is reduced. It is an object to realize a low-cost disk tray and disk device.

[0005]

In order to achieve the above object, the present invention provides a first disk having an openable and closable shutter for exposing or blocking a recording surface or a shape different from the first disk. A disc tray on which a second disc can be commonly mounted, the disc tray having a first step for mounting the first disc and a second step for mounting the second disc; The first step and the second step are defined by the center of the first disk mounted on the first step and the center of the second disk mounted on the second step. It is characterized in that the shutters are formed so as to be shifted from each other in accordance with the distance in which the shutter is opened and closed in the insertion / ejection direction.

A first disk or a second disk is mounted on the mounting surface of the first disk at the first step and the mounting surface of the second disk at the second step, respectively. An identification hole for identifying whether or not the operation is performed is formed.

Further, a projection for positioning the first disk is provided on the mounting surface of the first disk at the first step.

[0008] A disc tray on which a first disc having an openable and closable shutter for exposing or blocking a recording surface or a second disc having a shape different from that of the first disc can be commonly mounted. A first step for mounting the first disk, and a second step for mounting the second disk, wherein the first step and the second step are the first step. The center of the first disk mounted on the step and the center of the second disk mounted on the second step correspond to the distance in which the shutter is opened and closed in the disk insertion / ejection direction. A disc including an insertion / ejection mechanism for moving a disc tray formed so as to be displaced from each other to insert and eject the disc from the outside of the apparatus, and a playing section capable of playing the first disc or the second disc In the device, the insertion Mechanism, when the disc tray is placed the second disk is inserted, to move the disk tray to a position opposite to the playing unit,
When the disc tray on which the first disc is placed is inserted, the disc tray is further moved in the insertion / ejection direction by the distance from the position to make the disc tray face the playing section. It is characterized by having.

Further, a shutter opening means is provided for opening the shutter of the first disk mounted on the disk tray when the disk tray is further moved in the insertion / ejection direction by the distance from the position. It is characterized by becoming.

A first disk or a second disk is mounted on the mounting surface of the first disk at the first step and the mounting surface of the second disk at the second step, respectively. Discrimination holes for discriminating whether or not the disc is loaded are formed, and a disc tray on which the first disc is placed is inserted or the second disc is placed depending on the presence or absence of light passing through the respective discrimination holes. It is characterized in that it is determined whether or not the placed disk tray is inserted.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk drive according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram showing the structure of a disk device according to a first embodiment of the present invention, and FIG. 2 is a detailed view of an insertion / ejection mechanism of the disk device according to the first embodiment of the present invention. FIG. 3A is a top view, FIG. 3B is a side view, and FIG. 3 is a diagram showing a detailed structure of a tray of the disk device according to the first embodiment of the present invention. The components in the drawing mainly show the main members according to the present invention.

The disk drive 80 according to the first embodiment of the present invention has a CD 41 as shown in FIGS.
A storage box 30 in which a plurality of trays 10 on which the (second disk) or the MD 42 (first disk) is mounted are stored;
The storage section 40 into which the storage box 30 is inserted and installed, and the tray 10 of the storage box 30 are retracted and inserted by the claws 52 and the retraction arms 53 of the insertion / ejection mechanism section 50 to reproduce the information of the disk or to store the information on the disk. And a disk playing device main body 81 having a playing section 60 to be played.

As shown in FIG. 3, the tray 10 has an MD4
It is formed of a rectangular resin material on which the CD 2 or the CD 41 is placed. A plurality of trays 10 are stored in the storage box 30. The tray 10 has a step 10 a (second step) on which the CD 41 is fitted and placed.
Is formed in a circular shape around the center C1 of the
A step 10b (first step) on which the D42 is fitted and placed is formed in a quadrangular shape on the step 10a, with a step having a depth t1 further than the step 10a. This step 10b
Is that the center C2 of the MD42 is greater than the center C1 of the CD41.
The tray 10 is provided at a position shifted by a distance L1 in a direction opposite to the insertion direction (arrow A) of the tray 10 shown in FIG. That is, the distance L1 indicates the amount of movement of the MD 42 required to open and close the shutter that exposes / blocks the recording surface of the MD 42.

The hole 10 has a space for opening and closing the shutter 42b of the MD 42, and has a space for exposing the recording surfaces of the CD 41 and the MD 42 downward.
c is formed rearward from the end of the step 10b on the insertion direction (arrow A) side. A hole 11b for discriminating CD41 is provided near the outer periphery on the surface of the step 10a, and a hole 11a for discriminating MD42 and MD42 near the outer periphery on the surface of the step 10b.
The tapered positioning pins 12 (the height of the pins is equal to or less than the depth t1 of the step 10b) are provided to face the positioning holes 42a. The shutter 4 for exposing / blocking the recording surface of the MD 42 by the step 10 b and the pin 12.
2b is arranged on the near side shown in FIG. 3 (that is, on the right side when viewed from the insertion direction A).

The MD 11 hole 11a and the CD 41 hole 11b provided on the tray 10 identify whether the disk placed on the tray 10 is the MD 42 or the CD 41. This specifies the placement direction when placing a document, and prevents placement in the wrong direction.

A projection 13 and a notch 10d are formed on the tray 10 in the insertion direction (arrow A).
The claw 52 of the insertion / ejection mechanism 50 is fitted into the notch 10 d, and the projection 13 is hooked by the pull-in arm 53 or the like.
0 is inserted and inserted.

The tray 10 according to the first embodiment is a tray on which two types of discs, MD42 and CD41 for a diameter of 12 cm, are placed. A CD with a CD 41 may be used. As shown in FIG. 2, the insertion / ejection mechanism 50 includes a claw 52 that is fitted into the notch 10 d of the tray 10 and has a protrusion 52 a for retracting the protrusion 13 of the tray 10, and a guide pin 59 on the claw 52. An inverted C-shaped arm 53 having a gear portion 53b for moving the claw 52 connected thereto via a link, a connection gear 56 meshed with the gear portion 53b of the arm 53, and a gear 57 meshed with the connection gear 56. , Insertion / ejection mechanism body 51 directly connected to gear 57
A drive motor 58 installed on the upper surface of the disc and detection elements 61a and 61 corresponding to the issuance elements 68a and 68b for discriminating whether the disc placed on the tray 10 is the MD42 or the CD41.
b and an insertion / ejection mechanism main body 51.

As shown in FIG. 2, the insertion / ejection mechanism main body 51 pulls the tray 10 into the internal cavity and holds it. The insertion / ejection mechanism main body 51 is formed of a metal plate or the like having a hollow box shape and an open lower surface. Have been. The insertion / ejection mechanism main body 51 includes:
An elongated hole 51a for guiding the claw 52 on the upper surface is provided.
Lever 6 for raising and lowering the insertion / ejection mechanism body 51 on the upper and lower side surfaces
An elongated hole 51b for guiding the guide 2 and 63 is formed, and a projection 51c for holding the claw 52 is formed on the left end surface. A drive motor 58, a connection gear 56, and an arm 53 are provided on the upper surface. The arm 53 is installed via a rotary shaft 55, and is rotated clockwise R1 via the gear 57 and the connecting gear 56 by the activation of the drive motor 58, so that the tray 10 is
1 is drawn inside.

Light emitting elements 68a and 68b are mounted on the lower back surface of the insertion / ejection mechanism main body 51, and detection elements for receiving light of the light emitting elements 68a and 68b are provided on the upper surface of the insertion / ejection mechanism main body 51. 61a and 61b are attached, respectively, and the MD42 hole 11a and the CD41 hole 1 of the tray 10 are provided.
1b, it is detected whether or not the light from the light emitting elements 68a, 68b is shielded, and it is determined whether the disc placed on the tray 10 is the CD 41 or the MD 42. In this discrimination, when the disc placed on the tray 10 is the CD 41 (shown in FIG. 2), the MD 42 hole 11
a, the light from the light emitting elements 68a and 68b from the CD 41 11b is blocked by the CD 41, and both light are blocked. In the case of MD, the light emitting element 6 from the CD 41 11b on the tray 10 is used.
8b is transmitted, and only the light from the light emitting element 68a from the MD 42 hole 11a is blocked by the MD 42 and is shielded.

In the first embodiment, the case of the CD 41 will be described, and in the case of the MD 42, the second embodiment will be described.
Although the insertion / ejection mechanism 50 according to the first embodiment has a structure including the drive motor 58, the gear 57, and the arm 53, a structure using a cam or the like may be used without being limited thereto.

The playing section 60 includes an insertion / ejection mechanism section 50, a lifting / lowering mechanism section having levers 62, 63, etc. for raising and lowering the insertion / ejection mechanism section 50, and lowering the insertion / ejection mechanism section 50 to chuck the disk. It is composed of a turntable 65 to be rotated, a pickup 66 and the like, for reproducing information from the disk or recording information on the disk. This performance section 60
When playing (or recording) MD42 or CD41,
Turntable shared adapter mechanism that can support both disks fixed to one spindle motor (not shown)
Is provided.

Next, the operation of the disk device 80 will be described with reference to FIGS. 1, 2 and 3. FIG.

When playing the CD 41, the CD 41 is fitted and placed on the step 10 a of the tray 10, and the tray 10 is inserted and stored in the storage box 30. When playing the MD42, place the MD42 on the step 10b of the tray 10.
With the hole 42a of the MD 42 fitted into the pin 12 provided on the tray 10 so that the shutter 42b is in the right direction perpendicular to the insertion direction A of the tray 10. It is inserted and stored in the storage box 30. At this time, even if the MD 42 is erroneously mounted in the mounting direction, the MD 42 is blocked by the pins 12 so that the MD 42 does not fit and the mounting in the wrong direction is prevented.

A storage box 30 in which a plurality of trays 10 are stored
Into the storage section 40 of the disk device 80. Next, at the time of playing the disc, the tray 10 is removed from the storage box 30 installed in the storage section 40 to the playing section 6 of the disk device 80.
The protrusion 13 of the tray 10 is pulled into the insertion / ejection mechanism main body 51 by pulling the projection 13 of the tray 10 with the claw 52 of the insertion / ejection mechanism 50 provided on the main body 50. The pull-in of the tray 10 is engaged with the gear portion 53b of the arm 53 via the gear 57 and the connecting gear 56 by the activation of the drive motor 58 installed in the insertion / ejection mechanism main body 51 to interlock with the arm 53. Is rotated clockwise R1. By this rotation, the guide pin 59 provided on the claw 52 is moved to the guide elongated hole 53 of the arm 53.
a and the guide pin 59 is pressed and moved by the side surface of the long hole 53 a of the arm 53, and the claw 52 connected to the guide pin 59 is fitted. Moves in the right direction R1. In this retraction movement, as shown in FIG. 2A, the center position of the guide pin 59 is the distance L from the position X1 to the position X2.
The tray 10 is adjusted so that the left end surface (the rear end side with respect to the insertion direction A) of the tray 10 is positioned at a distance L6 from the left end surface S1 of the insertion / ejection mechanism main body 51. At this time, when the disc placed on the tray 10 is the CD 41, the center C1 of the CD 41 is located at a position separated from the left end face S1 of the insertion / ejection mechanism main body 51 by a distance L5, and the CD 41
Of the center C1 is opposed to the turntable 65 below.

In this state, the detection elements 61a and 61b installed on the upper surface of the insertion / ejection mechanism main body 51 block light from the light emitting elements 68a and 68b from the holes 11a and 11b of the tray 10 and the CD 41 blocks the light. Thus, the light-shielded state is detected, and the disc placed on the tray 10 is
41 is determined. At this position, the determined C
The insertion / ejection mechanism main body 51 that pulls in and holds the tray 10 on which the D41 is placed is provided with a lever 62 of an elevating mechanism,
63, and the CD 41 is chucked to the turntable 65 via the turntable adapter, rotated by the spindle motor, and
6 or the like is used to reproduce or record the CD 41.

When the disc placed on the tray 10 is the MD 42, the detecting elements 61a and 61b transmit the light from the light emitting element 68b from the hole 11b of the tray 10 and the light emitting element from the hole 11a. The light from 68a is MD4
2 to detect that the disk is MD42. At this time, the driving motor 58 is further driven to rotate the arm 53 in the clockwise direction R1 via the gear 57 and the connecting gear 56. By this rotation, as shown in FIG. 3, the guide pin 59 is displaced from the center C1 position of the CD 41 placed on the tray 10 to the center C2 position of the MD 42 by a distance L.
The slide is further moved in the right direction P1 for about one minute. At this time, the center C2 of the MD 42 faces the turntable 65 below. The details of this further retraction movement will be described in a second embodiment.

Thus, in the present disk drive, the tray on which the disk is mounted is a common tray capable of mounting a CD or MD at a predetermined position.
When playing a disc, the disc mounted on the tray is driven by the identification hole provided on the disc mounting surface of the tray and the detection element provided on the main body of the disc device.
By making it possible to determine whether or not each disc is inserted, it is easy to set the insertion of each disc into a predetermined playing position, and the structures of the tray storage section and the disc playing section have been simplified to save space and reduce the number of parts. Cost reduction and the like can be performed.
Further, in the present disk device, the positioning pins provided on the MD mounting surface of the tray prevent the MD from being mounted on the tray in the wrong direction, thereby improving reliability.

Next, a disk drive according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a detailed structural view showing a state at the start of opening of an MD shutter opening / closing mechanism provided in an insertion / ejection mechanism 50 of a disk device according to a second embodiment of the present invention, and FIG. ,
FIG. 5B is a side view, and FIG. 5 is a detailed structural diagram showing a state when the opening of the MD shutter opening / closing mechanism provided in the insertion / ejection mechanism 50 of the disk device according to the second embodiment of the present invention is completed. (A) is a top view and (b) is a side view. Further, description of components in the second embodiment of the present invention that are the same as those in the first embodiment will be omitted. The components in the drawing mainly show the main members according to the present invention.

As shown in FIGS. 4 and 5, the insertion / ejection mechanism 50 of the disk device 80 according to the second embodiment of the present invention is different from that of the first embodiment in that When the loaded disc is the MD 42, an opening / closing mechanism 70 for opening and closing the shutter 42b of the MD 42 is added to the disc insertion / ejection mechanism 50.

The disk placed on the tray 10 is MD4
In the case of No. 2, as shown in FIGS. 4 and 5, the guide pin 59 is further moved by the distance L1 between the center C1 position of the CD 41 placed on the tray 10 and the center C2 position of the MD 42. Slide in the right direction P1. The position of the tray 10 on which the MD 42 is placed during the performance of the MD 42 is
Since the position of the tray 10 on which the MD 41 is placed is further slid in the rightward direction P1 by a distance L1 with respect to the position of the tray 10 on which the MD 41 is placed, a positioning pin (not shown) for positioning the tray 10 on which the MD 42 is placed is provided. It is installed on the lower rear surface of the insertion / ejection mechanism main body 51 at a position shifted to the right P1 by the distance L1 so as not to interfere with the CD41 even when the CD41 is placed on the tray 10. At this time, MD
The center C2 of 42 faces the turntable 65 below.

The opening / closing mechanism 70 includes a shutter 4 of the MD 42.
2b that opens and closes the drive motor 75 and the drive motor 7
5, a rotation shaft 72 for supporting the rotation of the drive gear 74, the connection gear 73, and the hook 71, and the shutter 42b.
, And the like. The opening / closing mechanism 70 is attached and installed on the bottom rear surface of the insertion / ejection mechanism main body 51.

The drive motor 75 controls the control unit (not shown) that the disc placed on the tray 10 is the MD42.
Is rotated according to the instruction of the control unit.

The hook fitting 71 has a C-shaped shape provided with a projection 71b for pressing the right end face of the shutter 42b provided on the MD 42, a gear 71a, and a fitting hole 71c into which the rotary shaft 72 is fitted. Formed of a metal material or the like.
Normally, the hook 71 is at a position where the protrusion 71b does not abut the shutter 42b. However, when the drive motor 75 is started, the hook 71 rotates counterclockwise through the gear 71a via the drive gear 74 and the connection gear 73. The shutter 72b is rotated about the shaft 72 by a rotation angle R5, and is provided on the right end surface of the shutter 42b so as to protrude to a position where the protrusion 71b abuts. Due to this counterclockwise rotation (rotational angle R5), the tray 10 has a hole 10c through which the protrusion 71b can be inserted from the side of the tray 10 so that the protrusion 71b of the hook metal 71 is not obstructed by the tray 10. Is provided.

Next, the operation of the insertion / ejection mechanism 50 provided in the disk device 80 will be described with reference to FIGS.

The disk device 80 according to the first embodiment
As described in the second embodiment, also in the second embodiment, when playing a disc, the storage box 30
The tray 10 is pulled into the disk device main body 51 by pulling the projection 13 of the tray 10 with the claw 52 of the insertion / ejection mechanism unit 50 provided in the playing unit 60 of the disk device 80, and the guide pin 59 The center position is moved from the position X1 to the position X2 by a distance L20 so that the left end face (the rear end side with respect to the insertion direction A) of the tray 10 is positioned at a distance L6 from the left end face S1 of the disk device main body 51. Adjusted.

The disk placed on the tray 10 is MD4
In the case of No. 2, the detection elements 61a and 61b installed on the upper surface of the insertion / ejection mechanism
The control unit (not shown) determines that the disk is MD42 by detecting that the light from the light emitting element 68b is transmitted through the hole and the light from the light emitting element 68a from the hole 11a is shielded. I do. At this time, the drive motor 58 is further activated by a command from the control unit, the arm 53 is further rotated clockwise R1 via the gear 57 and the connecting gear 56, and the guide pin 59 is moved to the X direction shown in FIG.
2 corresponds to the distance L1 from the position X3 shown in FIG. 5 (that is, the center C1 of the CD 41 placed on the tray 10).
The distance L1 between the center and the center C2 of the MD 42 is shifted from the center L2). During this sliding movement, the shutter 42b of the MD 42
Opened by 0.

Opening of the shutter 42b of the MD 42 is performed as shown in FIG.
As shown in the figure, the position of the tray 10 on which the MD 42 is placed is such that the left end face (the rear end side with respect to the insertion direction A) of the tray 10 enters the left end face S1 of the disk device main body 51 by a distance L6 (that is, the position). , MD42 placed on tray 10
The center C2 is located at a distance L10 from the left end surface S1 of the disk device main body 51) and starts from the position where the CD 41 is played. That is, at this time, the projection 71b of the hook metal fitting 71 is turned on by the command of the control unit.
The shutter 42b is rotated in a counterclockwise direction R5 from a position distant from the end surface having the second shutter 42b, and comes into contact with the right end surface of the shutter 42b. The rotation of the hook metal 71 in the counterclockwise direction R5 is activated by the drive motor 75 mounted on the bottom rear surface of the disk insertion / ejection mechanism main body 51.
The drive gear 74 and the connecting gear 73 that are directly connected to the gears interlock, and the gear portion 71 of the hook metal 71 meshed with the connecting gear 73.
As a result, the shutter 42b is rotated about the rotation shaft 72 as a fulcrum, and stops at a position in contact with the right end surface of the shutter 42b.

The shutter 42b of the MD 42 is such that the projection 71b of the hook 71 is
5, the tray 10 on which the MD 42 is placed is moved relative to the disc insertion / ejection mechanism main body 51 and the position of the guide pins 59 is shifted rightward from X2 to X3 shown in FIG. By sliding to P1, the tray 10, that is, the MD 42 is moved by the distance L1 to the protrusion 7
1b and the shutter 42b move while being in contact with each other. Therefore, the shutter 42b is slid and opened by the pressing of the projection 71b by the distance L1. As shown in FIG. 5, this opened state is a position where the center C2 of the MD 42 placed on the tray 10 is separated from the left end surface S1 of the insertion / ejection mechanism main body 51 by a distance L5 (L10 + L1), that is, FIG. At the same position as the predetermined performance position of the CD 41 (that is, the position where the center C2 of the MD 42 and the turntable 65 face each other) as shown in FIG.

At the position where the release is completed, the MD
The insertion / ejection mechanism main body 51 that draws and holds the tray 10 on which the tray 42 is placed is lowered via levers 62, 63, etc. of the elevating mechanism, and the MD 42 is chucked to the turntable 65 via the turntable adapter. The MD 42 is rotated by a spindle motor, and the MD 42 is reproduced or recorded using the pickup 66 or the like. At this time, the opening / closing mechanism 70 is in a state where the shutter 42 b of the MD 42 is opened, and is attached to the bottom back surface of the insertion / ejection mechanism main body 51 in a region apart from the outer periphery of the MD 42 placed on the tray 10. Therefore, M
It does not interfere with the reproduction or recording of D42.

As described above, when the MD 42 is played, the CD
41, the tray 10 is held at a distance L1 (CD
(The distance between the center C1 of the MD 41 and the center C2 of the MD 42) is further retracted, so that a pin (not shown) for positioning the tray 10 on which the MD 42 is placed is an MD.
Since it can be inserted and installed independently for 42, there is no need to provide a conventional pin retracting structure.

Thus, in the present disk drive, when the disk placed on the tray is an MD, a mechanism for opening and closing the shutter of the MD is added, and the tray is notched so that the opening and closing mechanism can be inserted. Holes are provided, and the insertion / ejection mechanism discriminates between CD and MD when the disc is played, and is controlled by the insertion / ejection mechanism, further simplifying the structure of the tray storage section and the disc playing section. Therefore, space saving and cost reduction by reducing the number of parts can be performed.

It should be noted that not only the example described in the present embodiment, but also a step 10b in which the MD is placed in the opposite direction and the MD is arranged L1 deeper than the insertion direction (in this embodiment, Conversely, it is located closer to the insertion direction)
May be provided. In this case, the shutter of the MD can be opened by returning the tray to the discharge side by L1.

[0044]

As described above, according to the present invention, in the present disk device, the tray on which the disk is placed
The first disc and the second disc can be placed with a step at a position where the first disc and the second disc are shifted from each other in the insertion direction of the disc corresponding to a distance at which a shutter held by the first disc is opened and closed. When playing a disc, the insertion / ejection mechanism discriminates and discriminates between the first disc and the second disc, and inserts and controls the predetermined position for each performance. In addition, the structure of the disk playing section can be simplified, and the space and the number of parts can be reduced. Further, the positioning pin of the first disk provided on the tray and the notch hole for opening and closing the shutter prevent the first disk from being erroneously mounted on the tray, thereby improving reliability and improving the first disk. A shutter opening / closing mechanism for opening / closing the disk shutter can be easily installed, and the structure can be simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a structure of a disk device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a detailed structure of an insertion / ejection mechanism of the disk device according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a detailed structure of a tray of the disk device according to the first embodiment of the present invention.

FIG. 4 is a detailed structural diagram showing a state at the time of opening start of an MD shutter mechanism provided in an insertion / ejection mechanism of a disk device according to a second embodiment of the present invention.

FIG. 5 is a detailed structural diagram showing a state when the opening of an MD shutter mechanism provided in an insertion / ejection mechanism of a disk device according to a second embodiment of the present invention is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Tray 11a, 11b ... CD / MD discrimination hole 12 ... MD positioning pin 13 ... Tray draw-in projection 30 ... Storage box 40 ... Disk device storage part 41 ··· CD 42 ··· MD 50 ··························································································· ..Driving gear 58 ... Driving motor 59 ... Guide pin 60 ... Playing part 61a, 61b ... Detection element 62,63 ... Elevating lever 64 ... Pin 65 ... Turntable 66 ... Pickup 68a, 68b ... Light emitting element 70 ... Shutter opening / closing mechanism 71 ... Hook fitting 72 ... Rotating shaft 73 ... Connecting gear 74 ... Driving gear 75 ..Drive motors 0 ... disk device 81 ... disk playing device main body

Claims (6)

[Claims] 1. A disk tray on which a first disk having an openable and closable shutter for exposing or blocking a recording surface or a second disk having a shape different from that of the first disk can be mounted in common, A first step on which a first disk is placed;
And a second step on which the first disc is placed. The first step and the second step are formed by a center of a first disc placed on the first step, and a second step. A disc tray, wherein a center of a second disc placed on a step is formed so as to be shifted from each other in a direction in which the shutter is opened and closed in a disc insertion / ejection direction. 2. A first disk or a second disk is mounted on a mounting surface of a first disk at the first step and a mounting surface of a second disk at the second step, respectively. 2. The disc tray according to claim 1, wherein an identification hole for identifying whether the disc tray has been inserted is formed. 3. The disk tray according to claim 1, wherein a projection for positioning the first disk is provided on a mounting surface of the first disk at the first step. 4. A disk tray on which a first disk having an openable and closable shutter for exposing or shielding a recording surface or a second disk having a shape different from the first disk can be commonly mounted. A first step for mounting the first disk, and a second step for mounting the second disk, wherein the first step and the second step are the first step. The center of the first disk mounted on the step and the center of the second disk mounted on the second step correspond to the distance in which the shutter is opened and closed in the disk insertion / ejection direction. A disc including an insertion / ejection mechanism for moving a disc tray formed so as to be displaced from each other and inserting / ejection to the outside of the apparatus, and a playing section capable of playing the first disc or the second disc In the apparatus, the inserter / ejector When the disc tray on which the second disc is placed is inserted, the unit moves the disc tray to a position facing the playing unit, and the disc tray on which the first disc is placed is inserted. If so, the disc tray is further moved in the insertion / ejection direction by the distance from the position to make the disc tray face the playing section. 5. A shutter opening means for opening a shutter of the first disk mounted on the disk tray when the disk tray is further moved in the insertion / ejection direction by the distance from the position. 5. The disk device according to claim 4, wherein: 6. A first disk or a second disk is mounted on a mounting surface of a first disk at the first step and a mounting surface of a second disk at the second step, respectively. Discrimination holes for discriminating whether or not the disc is loaded are formed, and a disc tray on which the first disc is placed is inserted or the second disc is placed depending on the presence or absence of light passing through the respective discrimination holes. 5. The disk device according to claim 4, wherein it is determined whether the placed disk tray is inserted.