JPH09251693A - Disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable sure clamping of a disk by providing pawls for clamping the disk mounted on a tray even when the disk is mounted on the tray in the erect attitude. SOLUTION: A disk mounting recessed part 11 of the tray 10 is provided with the shape almost suited to the outer shape of the disk and also with the inside diameter somewhat larger than the diameter of the disk. Notched parts 70, 71 are arranged at both left/right sides of the tray 10 for making the disk easily to be picked up from the recessed part 11 by finger. When the disk is mounted on the tray 10 in the erect attitude, a part of the end of the disk is arranged so as to project from one notched part positioned at the lower side out of the notched parts 70, 71. Around the recessed part 11, when the disk is mounted in the erect attitude, the pawls 72 (72a, 72b, 72c, 72d) are provided for holding the disk so as not to fall off from the recessed part 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus such as a CD (compact disc) player and a CD-ROM drive.

[0002]

2. Description of the Related Art A CD-ROM drive with a built-in computer is a tray having an optical disk mounted in and out of a cabinet having a disk drive mechanism such as an optical pickup, a disk motor, and a turntable (loading / unloading). ) The type that can be done is the current mainstream.

Further, in order to pursue the miniaturization (thinning) of the CD-ROM drive, there is a pickup unit in which an optical pickup and a disk drive mechanism are integrally mounted and which is moved up and down at the same time when the tray is taken in and out. The CD-ROM drive is roughly classified into one in which the disc is mounted in an upright posture and one in which the disc is laid down. CD-R to be mounted with the disc upright
In the case of the OM drive, the tray must be provided with a mechanism for holding the disc to prevent the disc from falling out of the tray.

[0004]

At present, the present inventors have
We are considering a disc tray that can be mounted in either an upright position or a recumbent position and will not fall out even if the disc is mounted in the upright position. Then, one conclusion is that the inner diameter of the recess for mounting the disc in the tray is larger than the disc diameter, the disc is placed in the center of the recess in the recumbent posture, and the disc is located at the lower end of the recess in the standing posture. It has been found that a mechanism is desirable in which a disc is dropped and the disc is held from both sides at the dropping position to prevent the disc from falling off. According to this, there is an advantage that the member for holding the disc end portion from the outside in the standing posture does not become an obstacle when the disc is inserted into the recess.

However, according to this structure, the positions of the discs in the tray are deviated between the standing posture and the recumbent posture.
When the tray on which the disc is mounted in the upright posture is loaded into the drive body, the position of the center hole of the disc deviates from the center of the clampable position by the clamper and the turntable, and the disc cannot be clamped in some cases.

The present invention has been made in view of such circumstances, and has a recess for mounting a disc having an inner diameter larger than the disc diameter, and when the disc is mounted in an upright posture, the disc is mounted at the lower end of the recess. It is an object of the present invention to provide a disc reproducing device having a tray for holding a disc at a position where it is dropped and moved, and which guarantees a reliable disc clamping even when the disc is mounted on the tray in an upright posture.

[0007]

In order to achieve the above-mentioned object, a disk reproducing apparatus of the present invention is provided with a disk so that it can be inserted into and taken out of an apparatus body as described in claim 1. A tray for holding the disc at a position where the disc has a recess for mounting the disc having an inner diameter larger than the diameter of the disc, and when the disc is mounted in an upright position, the disc is dropped and moved to the lower end of the recess, A disc drive mechanism that is provided movably in the thickness direction of the disc mounted on the tray at a position approximately in the center of the recessed portion of the inserted tray, and that is used to clamp and drive the disc mounted on the tray, and the tray. When it is inserted into the device body in the upright posture, the disc located at the lower end of the recess of the tray is recessed to a position where the disc drive mechanism can clamp the disc. In those formed by providing a disc moving means for moving.

In the present invention, specifically, as described in claim 2, the tray has a cutout portion for allowing the lower portion of the disk mounted on the tray to protrude from the lower end surface of the tray when standing upright. The disc moving means engages with the lower portion of the disc protruding from the notch and moves the disc in the recess to a position where the disc can be clamped by the disc drive mechanism.

As described above, according to the present invention, when the tray is inserted into the main body of the apparatus in the upright posture, the disk moving means can position the disk located at the lower end of the concave portion of the tray so that the disk can be clamped by the disk drive mechanism. Since the disc is moved up to the inside of the concave portion, a reliable disc clamping is guaranteed even when the disc is mounted on the tray in an upright posture.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, modes for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing the external appearance of a CD-ROM drive according to the present invention. In FIG. 1, 1 is a cabinet and 2 is a front panel. On the front panel 2,
An opening 3 for inserting and removing the tray 10, and a tray 1
Eject switch 4 for giving an electrical command to discharge 0, and insert wire etc. for the purpose of manually forcibly discharging tray 10 when automatic discharge of tray 10 is disabled due to motor failure or the like. Small hole for doing 5
Is provided.

In FIGS. 2 to 4, 20 is a frame made of mold resin, 30 is a pickup unit (hereinafter referred to as PU unit), and 40 and 41 are the tray 10 and the PU unit 30 in the frame 20. A pair of sliders for supporting and guiding their movement. The frame 20 has slider support portions 21 and 21 for slidably supporting the sliders 40 and 41 in the direction of arrow XX ′, and a motor 23 as a power source for loading and unloading the tray 10. The mounted motor mount 22 and each slider 40,
A connecting member mounting portion 24 to which a connecting member 50 for synchronizing the sliding movement of 41 is mounted, and a clamper mounting portion 25 for rotatably holding the clamper 60 are provided.

As shown in FIGS. 3 to 5, a tray 10 has a disk mounting recess 11 in which an optical disk (not shown) is mounted, and a part of a signal recording surface of the optical disk mounted in the disk mounting recess 11. A window 12 is provided to expose the. Further, slider engaging projections 13 and 13 are provided on both outer surfaces of the tray 10. The protrusions 13 and 13 are respectively attached to the sliders 40 and 41.
It is fitted in the guide grooves 42, 42 provided in the.
As a result, the tray 10 is placed on the sliders 40 and 41,
It is supported so as to be movable in the direction of arrow XX '.
A rack gear 14 is provided on the inner surface on one side of the tray 10. The rack gear 14 is connected to the loading motor 23 through a plurality of gears. In addition, a pinhole 15 for positioning is provided on the back surface of the disk mounting recess 11 of the tray 10. By inserting the fixing pin 32 provided in the PU unit 30 into the pin hole 15, the tray 10 and the PU unit 30 are positioned and fixed to each other.

In the tray 10, when the present CD-ROM drive is installed in a computer in a vertical position (when a disc is mounted in a standing position in the tray), the tray 1 is used.
A disk holding mechanism is provided to prevent the disk from dropping from 0. This disk holding mechanism will be described later in detail.

As shown in FIGS. 3 and 4, the PU unit 3
Reference numeral 0 denotes an optical disc while sandwiching the optical disc between an optical pickup 31 for reading an information signal from the signal recording surface of the optical disc, a pickup feed mechanism 33 for feeding the optical pickup 31 in the radial direction of the optical disc, and a clamper 60. A disk drive mechanism including a turntable for rotating and driving the disk, a disk motor 34, and the like, a frame 35 for integrally supporting these, and a printed wiring board and the like. Frame 3
The fixing pin 32 described above is provided on the reference numeral 5. The sliders 4 are provided on both side surfaces of the frame 35, respectively.
Guide holes 43, 44, 45, 46 provided in 0, 41
Guide pins 36a, 36b, 36c, 36 which are inserted into
d is provided.

As shown in FIGS. 4 and 6, each slider 4
Reference numerals 0 and 41 respectively relate to slider engaging projections 13 and 13 provided on the outer side surfaces of both sides of the tray 10, and are guide grooves for slidably supporting the tray 10 in the direction of arrow XX '. 42, 42 and two guide holes 43, 44
And 45 and 46. Each guide hole 43, 44 and 4
5 and 46 respectively include guide pins 36a, 36b and 36c, 36 provided on the frame 35 of the PU unit 30.
d is inserted. The PU unit 30 is connected to the sliders 40 and 4 by combining the guide holes and the guide pins.
Moves up and down simultaneously with slide 1.

Rack gears 47 and 48 are provided at the lower ends of the sliders 40 and 41, respectively. Each rack gear 4
The gears 7, 48 mesh with gears 51, 52 fixed to both ends of the shaft 53 of the connecting member 50. Each slider 4
0 and 41 are connected to each other by this connecting member 50 and are configured to slide in synchronization with each other. A rack gear 49 is provided on one slider 41.

Further, each slider 40, 41 has a disk eccentric guide protrusion for eccentrically moving the disk mounted on the tray 10 to a position where it can be clamped when the tray 10 is loaded, and a disk is loaded when the disk clamp is released. A disk return guide protrusion for returning to the height position in the tray 10 at the time is provided. These will be described in detail later.

Next, the tray loading operation will be described.

FIGS. 7A and 8 show the state when the tray 10 is being discharged. When ejecting the tray, each guide pin 36a, 36b, 36c, 36 of the PU unit 30
d is a guide hole 43 provided in each slider 40, 41,
It is on the upper horizontal part (a) of 44, 45, and 46. At this time, the turntable 28 and the clamper 60 are separated. On the other hand, the rack gear 14 provided on the tray 10 is
It is connected to the first gear (b) of the clutch gear 64.

Loading of the tray 10 is started by the user pushing the tray 10 in the direction of the arrow X'with a finger or the like. When the tray 10 has moved a certain distance, this is electrically detected by the switch 70 mounted on the frame 20, and the detection signal is notified to the controller. As a result, the controller controls the loading motor 23 to start. When the motor 23 is activated, the clutch gear 64 rotates in the direction of the arrow, whereby the tray 10 is automatically loaded inside.

When the retracted amount of the tray 10 reaches a predetermined distance, as shown in FIG. 9, the end surface 10a of the tray 10 on the insertion side contacts the one end 81 of the rotary lever 80. The rotary lever 80 is rotatably supported on the frame 20 via a support shaft 82. The rotary lever 80 has the other end portion 83 for pushing out one slider 40 to the front side (direction of arrow X). Therefore, one end 81 of the rotary lever 80 abuts on the insertion-side end surface 10a of the tray 10, and the rotary lever 80 rotates in the direction of arrow C, whereby the slider 40 slides toward the front side (direction of arrow X). To start. When the slider 40 moves, the other slider 41 connected to the slider 40 via the connecting member 50 also slides in the arrow X direction in synchronization with the slider 40.

As shown in FIG. 10, in the tray 10, the end surfaces 16a and 16b of the tray 10 are the surfaces 20c of the frame 20.
The loading of the tray 10 is completed when the tray 10 is moved to the position where it abuts. At this time, as shown in FIG.
Each guide pin 36a, 36b, 36 of the PU unit 30
c and 36d are guide holes 43 and 4 of the sliders 40 and 41.
4, 45, 46 on the slope (b). That is, the PU unit 30 is located almost in the middle of its lifting range.

On the other hand, the rack gear 49 of the slider 40 is
At this time, the gear 61 is already connected. Therefore, the sliders 40 and 41 are moved in the arrow X direction by the power of the loading motor 23 transmitted through the clutch gear 64, the gear 61, and the rack gear 49. At this time, the clutch gear 64 disconnects the power of the motor 23 to the tray loading mechanism, and the sliders 40, 4
Power is transmitted only to the lifting mechanism of No. 1.

FIG. 11 shows a state where the movement of the sliders 40 and 41 has been completed (a state where disk loading has been completed).
Is shown. At this time, as shown in FIG.
Each guide pin 36a, 36b, 36c of the unit 30,
36d is the guide holes 43, 44 of the sliders 40, 41,
It is located in the lower horizontal part (c) of 45 and 46. At this time, the optical disk is clamped by the turntable 28 and the clamper 60. Further, the fixing pin 32 provided in the PU unit 30 is fitted into the pin hole 15 provided in the tray 10, whereby the tray 1 is provided.
The positioning of the 0 and the PU unit 30 in the up-down direction, the front-rear direction, the left-right direction, and the mutual fixing are achieved.

The tray 10 is ejected by the eject switch 4
It is started by pressing. When the controller receives the eject detection signal from the eject switch 4, the controller controls the loading motor 23 so as to drive it in the reverse rotation direction to that during loading. As a result, the PU unit 30 moves from the position (height) in FIG. 7C to the position (height) in FIG. 7B, and the disc is unclamped. After that, the tray is discharged by the procedure completely opposite to the loading operation described above. When the tray 10 is ejected into place, this event is electronically detected by the switch 70 mounted on the frame 20. The controller controls the motor 23 to stop when the detection signal from the switch 70 is input.

Next, details of the disc holding mechanism of the tray will be described.

As shown in FIGS. 5 and 12, the disc mounting recess 11 of the tray 10 has a shape that substantially matches the outer shape of the disc D and has an inner diameter slightly larger than the disc diameter. Notches 70 and 71 are provided on the left and right sides of the tray 10 to facilitate the extraction of the disc from the disc mounting recess 11 with a finger. When the disc is mounted on the tray in the upright posture, a part of the end of the disc is Cutout 70,
It can be projected from one of the notches located at the lower side of 71.

Around the disk mounting recess 11, four claws 72 (72a, 72b, 72c, 72a, 72b, 72c) for holding the disk D so as not to fall out of the disk mounting recess 11 when the disk is mounted in an upright posture. 72d) is provided. That is, as shown in FIG. 13, the disc D has two claws 7 arranged with the tray notch 71 (one in this example, the lower side) defined by the left-right orientation of the CD-ROM drive incorporated in the computer main body.
It is held on the tray 10 by 2c and 72d. FIG.
FIG. 15 shows an enlarged cross section of the claw portion, and FIG. 15 shows an enlarged cross section of the end portion of the tray cutout portion. Thus, the claw 72 holds the disk D by pressing the disk D with the surface 73 facing the bottom surface 11a of the disk mounting recess 11. Nail 7
The protrusion amount h1 of 2 may be about 1 mm, and if it is too long, for example, in the case of a double-sided disc, the claws will come into contact with the signal recording area, which is not preferable for disc protection, and the disc mounting / removing part 11 can be taken in and out In the position of the nail is obstructed.

FIG. 16 is a sectional view showing the movement of the disc when the disc is mounted on the tray 10. In the figure,
The disk located at A inserted by the user in the approximate center of the disk mounting recess 11 falls in the recess 11 immediately after the user releases his / her finger, and the tapered surface 11b (FIG. 5, FIG. 12, indicated by the shaded portion in FIG. 13), and moves to the position B where it abuts the two claws 72c and 72d. In addition, stochastically, the disc after dropping often has a form in which the upper side of the disc falls down into the recess 11 leaving a trail of guidance of the tapered surface 11b, but here it is assumed that the disc falls straight down. To do.

A flat surface 11c is formed at a portion of the inner wall of the recessed portion that rises up from the tapered surface 11b.
The distance between the claw 72 and the claw 72 in the disc thickness direction substantially coincides with the disc thickness (may be slightly smaller than the disc thickness). For this reason, there is no fear that the upper side of the disc mounted on the tray 10 in the upright posture will largely fall outward from the disc mounting recess 11.

By the way, when the flat surface 11c at the portion where the taper surface 11b of the inner wall of the recess is ascended is sufficiently narrowed (including the case where the flat surface 11c does not exist), as shown in FIGS. The probability that the disk D will be held in an oblique posture leaving a trace of the disk D being guided by the surface 11b will be increased. In this case, the disc D
The upper side of the disk falls into the disk mounting recess 11 with the claw 72 as a fulcrum, and the lower side of the disk D slightly tilts in the direction protruding from the disk mounting recess 11.

When the disk D is projected more than the disk mounting recess 11 of the tray 10, there is a concern that the disk and the components in the cabinet 1 may collide when the tray 10 is transported (loading / unloading).
Since the protruding flying height h2 on the lower side of the disk in this example is extremely small, there is no fear of that. On the contrary, by tilting the upper side of the disc into the recess 11 in this manner, the posture of the disc during tray transportation becomes more stable, and the upper side of the disc does not momentarily protrude from the recess due to disturbance vibration. The risk of the above collision is further eliminated.

Thus, the CD-ROM of this embodiment
The drive is provided with the pawl 72 that functions to contact the disc and restrain the disc in the disc mounting recess 11 only when the disc is mounted on the tray 10 in the standing posture. It can be used both for mounting in and in the recumbent position.

Further, since two claws 72 for holding the disc are provided at symmetrical positions on the left and right sides of the tray 10, this CD-
The left and right orientation of the ROM drive incorporated in the computer body is also free.

Next, a mechanism for eccentricizing the disc mounted on the tray 10 to a clampable position when the tray 10 is loaded, and a mechanism for returning the disc to a fixed position inside the tray 10 when the disc is unclamped. The mechanism will be described.

As described above, in the present CD-ROM drive, when the disc is mounted on the tray 10 in the upright posture, the disc falls below the original height position by the distance L as shown in FIG. . That is, the center position of the disc is displaced by the distance L as compared with the case where the disc is mounted on the tray 10 in the recumbent posture. Originally CD-
In the ROM drive, a part called centering is mounted on the turntable to absorb the positional deviation from the center hole of the disk. Although some positional deviation is corrected by this centering, the disk clamp is successful, but The present CD-ROM drive has the following configuration for more reliably performing the disc clamping when the disc is mounted on the tray 10 in the upright posture.

As shown in FIG. 5, the slider 40 includes
A disc eccentric guide part 91 for guiding the disc to a height position where it can be reliably clamped by contacting the lower end face of the disc protruding from the notch 71 on the lower side of the tray 10 at the time of loading the tray 10, and at the time of releasing the disc clamp. A disc return guide 92 is provided for returning the disc to the original height position in the tray 10 at the time of loading.

FIGS. 19, 20 and 21 are a plan view and a sectional view showing details of the disc eccentric guide portion 91 and the disc return guide portion 92, respectively. As shown in these figures,
On the slider 40, a disc eccentric guide portion 91 is formed in a groove shape along the moving path D of the lower end portion of the disc at the time of initial tray loading. The bottom surface of this groove is partly a slope surface 91a, and this slope surface 91a raises the height position of the disk D in the loaded tray 10 by L1.

Further, in FIGS. 19 and 20, C is the position of the disk in the tray when the disk clamp is released. When the disc is mounted on the tray in the recumbent posture, the disc returns to its original position in the tray 10 due to gravity falling as the turntable 28 descends. However, when the disc is mounted on the tray 10 in the standing posture, the clamp is released. Later the disc falls straight down. So this CD-
The ROM drive is provided with a disk return guide unit 92. The disc return guide portion 92 has a tapered surface 92a for abutting the lower end face of the disc that has dropped after releasing the clamp and guiding the disc to the disc position in the tray when the tray is transported. Next, the disc eccentric guide portion 91 and the disc return guide portion 9
22 to 27 about the movement of the disk according to FIG.
Will be described in more detail with reference to. During loading of the tray 10, the lower end of the disc protruding from the notch 71 on the lower side of the tray 10 comes into contact with the slope surface 91a of the disc eccentric guide portion 91 (see FIG. 22 (a) and FIG. 24). A flat top surface 9 after climbing the surface 91a
1b is reached (see FIG. 22 (b) and FIG. 25). As a result, the center position of the disc D in the tray 10 reaches a height position where it can be clamped, and the disc clamp is achieved by the clamper 60 and the turntable 28 (FIG. 22).
(C), see FIG. 26). This disc clamping is performed by the movement on the turntable 28 side, and as a result, the disc D is driven at a position slightly above the disc mounting recess 11 of the tray 10.

In the tray unloading operation, first, the turntable 28 is separated from the clamper 60 to release the disc clamp. As a result, the disc D drops downward (see FIG. 23 (b) and FIG. 27). Simultaneously with this disc clamp releasing operation, the slider 40 slides in the arrow X'direction. This slider 40
The lower end surface of the disc that has dropped due to the movement of the disk abuts on the tapered surface 92a of the disk return guide portion 92 provided on the slider 40, and the guiding action of the tapered surface 92a causes the disk D as a whole to move toward the disk eccentric guide portion. 91
23, that is, the disk position in the tray at the time of initial tray loading (see FIG. 23C).

As described above, the CD of this embodiment
-The ROM drive puts the disc in the tray 10
By providing the claw 72 which functions to hold the disc in the disc mounting recess 11 only when mounted on the tray, it can be used both when the disc is mounted on the tray in the upright position and when it is mounted in the recumbent position. It becomes possible. That is, since the disc in the upright posture is held in a position where it is dropped and moved downward in the recess 11, that is, a position deviated from the center of the disc mounting recess 11, when the disc is inserted into or removed from the recess 11. The claw 72 does not become an obstacle. Further, since the disc in the upright posture is held at a position where it is entirely floated up from the bottom surface side of the concave portion 11, extra interference between the disc in the recumbent posture and the claw 72 does not occur. Further, since the disc in the upright posture is held in a posture substantially parallel to the disc mounting surface of the tray 10 or in a posture in which the upper side of the disc is tilted to the bottom side of the concave portion 11, the disc and the CD-RO are conveyed during tray transportation.
The collision with the parts on the M drive body side does not occur.
Therefore, the CD-ROM drive of this embodiment can be favorably used both when the disk is mounted on the tray 10 in the upright posture and when it is mounted in the recumbent posture.

Further, by providing two claws 72 for restraining the disk symmetrically on the left and right of the tray 10, the right and left directions can be freely selected when the present CD-ROM drive is incorporated into the computer main body. Further, since the claw 72 for holding the disc is easily provided on the tray by integral molding, the number of parts and the number of assembling steps are not substantially increased. Therefore, it is possible to reduce the size, weight and cost of the CD-ROM drive.

Further, in the CD-ROM drive of the present embodiment, the disc eccentric guide portion 91 is used to shift the center position of the disc in the tray when the disc is mounted on the tray 10 in the upright posture and when the disc is mounted in the recumbent posture. It can be corrected and the disc clamp can be ensured.

In addition, the CD-ROM drive of this embodiment is provided with the disc return guide portion 92 for returning the disc to the original height position in the tray 10 at the time of loading the disc when the clamp is released. When the disc is mounted on the tray 10 in the upright posture, the unloading operation of the tray can be stably performed.

[0046]

As described above, according to the present invention, there is a disc mounting recess having an inner diameter larger than the disc diameter, and when the disc is mounted in the upright posture, the disc is dropped and moved to the lower end in the recess. In the disc reproducing apparatus having the tray for holding the disc at the position, it is possible to guarantee the reliable disc clamping even when the disc is mounted on the tray in the upright posture.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a CD-ROM drive according to an embodiment of the present invention.

FIG. 2 is a view showing the inside of the CD-ROM drive of FIG. 1 from the back side with the cabinet removed.

FIG. 3 is a diagram showing a state in which a tray is pulled out in FIG.

FIG. 4 is an exploded view of the CD-ROM drive shown in FIG.

FIG. 5 is a perspective view of the tray of the CD-ROM drive shown in FIG. 1 viewed from the side of the disk mounting surface.

FIG. 6 is a diagram showing a connection relationship between a slider, a tray, and a PU unit.

FIG. 7 is a side view showing the operation during tray loading.

FIG. 8 is a plan view showing a state when the tray is discharged.

FIG. 9 is a plan view showing a state in which the tray is being pulled in.

FIG. 10 is a plan view showing a state at the end of retracting the tray.

FIG. 11 is a plan view showing a state of loading completion and disk clamp completion.

FIG. 12 is a plan view of the tray.

FIG. 13 is a plan view of a tray on which a disc is mounted in a standing posture.

FIG. 14 is an enlarged cross-sectional view of a claw portion that holds a disc on a tray in a standing posture.

FIG. 15 is an enlarged cross-sectional view of a terminal portion of the tray cutout portion.

FIG. 16 is a sectional view showing the movement of the disc when the disc is mounted on the tray.

FIG. 17 is a diagram showing another example of the claw portion.

FIG. 18 is a view showing another example of the end portion of the tray cutout portion.

FIG. 19 is a plan view showing details of a disc eccentric guide part and a disc return guide part.

20 is a sectional view taken along line XX ′ in FIG.

21 is a cross-sectional view taken along the line YY 'of FIG.

FIG. 22 is a cross-sectional view showing the operation of the disc guide by the disc eccentric guide portion.

FIG. 23 is a cross-sectional view showing an operation of guiding a disk by a disk return guide unit.

FIG. 24 is a plan view showing a state immediately before contact between the disc eccentric guide portion and the disc lower end surface.

FIG. 25 is a plan view showing a state after disc eccentricity by the disc eccentricity guide portion.

FIG. 26 is a plan view showing a disc clamp completed state.

FIG. 27 is a plan view showing a disc clamp released state.

[Explanation of symbols]

 10 ... Tray 11 ... Disk mounting recess 11a ... Bottom of disk mounting recess 11b ... Tape surface of disk mounting recess 11c ... Flat surface of disk mounting recess 70, 71 ... Cutout 72 (72a, 72b, 72c, 72d) ... Claw 91 ... Disk eccentric guide section 91a ... Slope surface of disk eccentric guide section 92 ... Disk return guide section

Claims (2)

[Claims] 1. A disk mounting recess is provided so that it can be inserted into and taken out of an apparatus main body and has an inner diameter larger than the diameter of the disk, and the recess when the disk is mounted in an upright posture. A tray that holds the disc at a position where it is dropped and moved to the lower end of the tray, and is movable in the thickness direction of the disc mounted on the tray at a position approximately in the center of the concave portion of the tray that is inserted into the apparatus main body A disc drive mechanism for clamping and driving a disc mounted on the tray, and a disc drive mechanism located at a lower end of the recess of the tray when the tray is inserted into the apparatus main body in an upright posture. A disc moving means for moving the disc in the recess to a position where the disc can be clamped by the disc drive mechanism. Disk playback apparatus according to symptoms. 2. The disc reproducing apparatus according to claim 1, wherein the tray has a cutout portion that allows a lower portion of the disc mounted on the tray to protrude from a lower end surface of the tray when the tray is in an upright posture, and the disc moving means is provided with the notch portion. A disc reproducing apparatus, characterized in that the disc is engaged with a lower portion of the disc protruding from the notch to move the disc in the recess to a position where the disc drive mechanism can clamp the disc.