JPH10106114A - Changer type disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a disk from being abutted due to its wobbling by drawing out a disk from a holder in horizontally rotating a reproducing means simultaneously with movement of a disk supporting part without vertically moving the reproducing means. SOLUTION: The disk 71 is supported in its circumferential periphery by a disk supporting part 23 of the disk holder 11. At the time of reproducing, a belt driving mechanism 40 and a guide driving mechanism 50 are moved by a belt/guide driving mechanism 85, so as to bring them in their noncontact state with the disk 71. Subsequently, a mechanical chassis 63 is rotated around an axis 68 as the center by 45 degrees, and afterward, the rotating center of a turntable 61 is moved into an aligning position with a center hole 81 of the disk 71. Afterward, a cylindrical cam is rotated, and the disk holder 11 is lowered and placed on the turntable 61. Then, the disk 71 is drawn out of the disk holder 11 by the mechanical chassis 63 and is reproduced. Morevoer, the disk supporting part can simultaneously be moved by 1st and 2nd cylindrical cams for the purpose of selcting a disk.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a changer type disk reproducing apparatus capable of selectively reproducing a plurality of disks.

[0002]

2. Description of the Related Art In order to reduce the size of an apparatus, a reproducing means including an optical pickup and a turntable is horizontally moved between a plurality of disks arranged coaxially, and a selected disk is pulled out from its storage position. Japanese Unexamined Patent Publication No. 3-235 discloses a changer-type disk reproducing apparatus capable of reproducing data without any change
No. 248, JP-A-6-131793, JP-A-7-16
No. 9168 and the like.

In these conventional examples, in order to move the reproducing means between the disks, it is necessary to provide a sufficient clearance between the recording surface of the disk to be reproduced and another disk adjacent to the recording surface. . On the other hand, minimizing the device in the direction perpendicular to the disk surface is achieved by minimizing other disk spacing.

Here, as a disk moving means for controlling the vertical movement of a disk housed in the apparatus, Japanese Patent Application Laid-Open No. 3-235248 discloses a method of rotating a plurality of mounting plates on which one disk is mounted. Although the control is performed by the cam, it is necessary to provide a tray holding arm for connecting to the rotating cam on each mounting plate, which increases the number of parts. Also, in JP-A-6-131793,
The tray holding the disc is engaged with a cam groove formed on the outer periphery of the rotating shaft, and the tray is moved up and down in close contact by rotating the rotating shaft. Further, the cam grooves are formed at irregular pitches so that a sufficient clearance can be obtained above and below the tray on which the disk to be reproduced is placed.

[0005]

SUMMARY OF THE INVENTION Here, Japanese Unexamined Patent Application Publication No.
In Japanese Patent No. 31793, the details of the chucking mechanism between the disk and the turntable are not described because the mechanism is not described. Here, in the case where the reproducing means simply moves horizontally, the disc holding member that holds the disc like the above-described tray is moved vertically to chuck the disc on the turntable, and then the holding member is moved vertically, In order to rotate the disk, it is necessary to separate the chucked disk from the holding member. With this movement, the other holding member also moves, so that the reproduced disk and the other disk holding member or the disk held by the disk come close to each other, and are perpendicular to the disk surface required for the disk being reproduced. There is a disadvantage that the clearance decreases.

[0006]

According to the present invention, as a means for solving the above-mentioned problems, a plurality of disk holding members for holding the respective disks and a plurality of disk holding members so that the plurality of disks are coaxial. First and second disk holding member moving means for moving the member in a direction perpendicular to the disk surface; reproducing means having at least an optical pickup and a turntable for reproducing the disk; and a turntable provided on the disk holding member. A reproducing means moving mechanism for moving the reproducing means so as to be located at a retreat position which does not overlap with the stored disk and a reproducing position at which the center of rotation of the disk stored in the disk holding member is substantially aligned with the center of the disk; And control means for controlling the second disk holding member moving means.

[0007]

The control means drives both the first and second disk holding member moving means together to drive a plurality of disk holding members in a first movement state and only the first disk holder movement means, A second movement state in which only the disk holder engaged with the first disk holder moving means is moved can be taken.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a changer type disk reproducing apparatus capable of storing five disks will be described below.

FIG. 1 is a main part top view showing a state in which no disk is stored in a disk reproducing apparatus 1 capable of storing five disks. An arcuate disk holder 11 provided corresponding to each of the five disks and holding the disk over an angular range of about 180 degrees around the periphery of the disk.
To 15 are stacked. In FIG. 1,
Among the disk holders 11 to 15, the first disk holder 11 located at the top is shown. The disk holder 11 is provided with four flanges 16, each of which has a round hole 17. FIG. 35 is an enlarged view of the flange 16.
Engaging pins 18 for fitting into cam grooves 33 and 34 formed in a disk holder moving means 30 described later for moving the disk holders 11 to 15 in a direction perpendicular to the paper surface direction of FIG. Have been. The disk holders 11 to 15 have the same configuration.

FIG. 8 is a sectional view taken along the line AA shown in FIG. 1, and shows a sectional view of the disk holder 11 and the disk holder moving means 30. The disk holder 11 has a disk support portion 23, 24 for holding the peripheral portion of the label surface of the disk and a recording surface opposed thereto, and a base portion 25 on which the disk support portions 23, 24 are integrally mounted.
And a flange 16 attached to the base 25. The disk holder moving means 30 has a two-piece structure of a first cylindrical cam 31 and a second cylindrical cam 32 having the same outer diameter, and the lower second cylindrical cam 32 is a first cylindrical cam. 31 and the first cylindrical cam 31
Are rotatable with respect to pins 35 provided on the chassis 4. Cam grooves 33 and 34 are formed on the outer periphery of each of the first cylindrical cam 31 and the second cylindrical cam 32, and the engagement pins 1 formed on the flange 16 described above are formed.
8 are fitted. Therefore, the first and second cylindrical cams 3
The disk holder moving means 30 including the first and second 32 functions as first and second disk holder moving means for moving the disk holders 11 to 15 in the vertical direction.

FIG. 7 is a side view of the disk holder moving means 30. As shown also in FIG.
The reference numerals 3 and 34 are formed at an irregular pitch throughout.
P1 to P11 indicate the engagement pins 18, ie, the positions at which the disk is moved by the rotation of the disk holder moving means 30, and the respective pitches between P1 and P5 are L1 and the respective pitches between P5 and P7. Is L1
The larger pitch between L2 and P7-P8 is L3, and the pitch between P3 and P8-P11 is larger than L2.
It is set to 1. In the illustrated rotation position, the rotation positions of the first cylindrical cam 31 and the second cylindrical cam 32 are positioned so that the joining positions of the cam grooves 32 and 33 coincide. Note that the pitch L1 is set such that there is no space between adjacent disk holders and the disk holders are close to each other.

A first cylindrical cam 31 and a second cylindrical cam 32
Are provided with spur gears 36 and 37, respectively. The spur gears 36 and 37 are connected to required cylindrical cam driving mechanisms 83 and 82, such as motors, for controlling the rotation direction and the rotation position of the first cylindrical cam 31 and the second cylindrical cam 32.
The disk holder moving means 30 is provided for each of the four flanges 16, and the spur gears 36 and 37 are provided.
Are connected to each other, so that the four disk holder moving means 30 become cylindrical cam driving mechanisms 82 and 83.
, And are driven to rotate in the same direction by the same rotation angle. Therefore, the disk holders 11 to 15 are vertically moved in the apparatus 1 while maintaining the parallel state.

In FIG. 1, a front panel 2 of an apparatus 1 is shown.
1, a belt driving mechanism 40 is disposed on the left side in FIG. 1 and a guide mechanism 50 is disposed on the right side. Details of the belt drive mechanism 40 will be described with reference to FIG. 36 showing a top view thereof and FIG. 37 being a cross-sectional view taken along line BB shown in FIG. Between a pair of upper and lower guide plates 41 and 42 formed so as to sandwich the peripheral portion of the disc, a drive pulley 43 and a driven pulley 44 driven by a required pulley drive mechanism 84 such as a motor are provided. An endless drive belt 45 stretched around is disposed. A fixed block 46 is disposed in the loop of the drive belt 45 so that the drive belt 45 does not bend inward.

On the other hand, as shown in FIG. 38 which is a top view of the guide mechanism and FIG. 39 which is a cross-sectional view taken along the line C--C in FIG. 38, a pair of upper and lower guides formed so as to clamp the peripheral edge of the disk. It is composed of plates 51 and 52 and a guide wall 53 which is arranged between the guide plates and abuts against the periphery of the disk. The belt drive mechanism 40 and the guide mechanism 50 are connected to each other by a required connecting mechanism (not shown) by arrows DE in FIG.
The belt drive mechanism 40 is connected so that when the guide mechanism 50 moves a required distance in the direction of arrow E, the belt drive mechanism 40 moves the same distance in the direction of arrow D opposite thereto. In order to move the belt drive mechanism 40 and the guide mechanism 50 in the direction of the arrow D-E, a required belt / guide drive mechanism 8 such as a motor is used.
5 are provided.

Accordingly, when the drive pulley 43 is rotated counterclockwise by the pulley drive mechanism 84 in a state where the disk is held between the drive belt 45 and the guide wall 53, the disk is moved in the direction of the arrow DE. The disk inserted into the apparatus 1 from the slit 3 formed in the front panel 2 is transported into the selected disk holder by rotating while being rotated clockwise in the direction of arrow F perpendicular to the arrow. When the drive pulley 43 is driven to rotate clockwise by the pulley drive mechanism 84, the disk is transported while rotating counterclockwise in the direction of arrow G opposite to the arrow F, so that the disk is moved from the selected disk holder. Is pulled out and transferred to a position where a part of the disk projects from the slit 3.

In FIG. 1, a spindle motor 62 (not shown in FIG. 1) for rotationally driving a turntable 61 for mounting a disk is fixedly arranged on a mechanical chassis 63. The turntable 61 is called a self-chucking type, and does not require a clamper for clamping a disk between the turntable 61 and the turntable 61. An optical pickup 66 is provided on the mechanical chassis 63 so as to be movable between the inner circumference and the outer circumference of the disk with the rotation of a feed screw 65 driven to rotate by a sled motor 64. As is well known, the disc is irradiated with laser light emitted from an optical pickup 66 while rotating the disc by a turntable 61, and the reflected light is read to reproduce information recorded on the disc. Reproduction means is constituted by the turntable 61 and the optical pickup 66.

The optical pickup 6 is mounted on the mechanical chassis 63.
A guide rail 67 is provided so that 6 moves in parallel.
The movement of the optical pickup 66 is guided. The mechanical chassis 63 is arranged around a shaft 68 provided at one end thereof as shown in FIG.
Can be rotated 45 degrees in the counterclockwise direction from the position shown in FIG. 5, and can be moved in parallel in the direction of arrow F from this rotated position, and the movement is controlled by a required mechanical drive mechanism 86 such as a motor. . Therefore, the shaft 68
The mechanical drive mechanism 86 constitutes a reproducing means moving mechanism for moving the reproducing means.

Here, the turntable 61 is located between the front panel 2 and the disk holders 11 to 15, and as shown in FIG. 3, the turntable 61 is held in a state where the disk 71 is held in the disk holder 11. Are not overlapped with the disc 71 and are located in the loading path of the disc 71 between the front panel 2 and the disc 71.

FIG. 40 is a circuit block diagram of the apparatus 1. Information read by the optical pickup 66 is output from an output terminal 92 after being subjected to required data processing by a reproduction circuit 91. A control circuit 93 composed of a microcomputer or the like controls the reproduction circuit 91 and also controls the above-described cylindrical cam drive mechanisms 82 and 83, a pulley drive mechanism 84, a belt / guide drive mechanism 85, and a mechanical chassis drive mechanism 86.
Are controlled at timings to be described later.

In the above configuration, the operation is described by (1) FIGS. 1 to 6 which are plan views of main parts of the apparatus 1, and (2) the disk holder moving means 30 for controlling the vertical movement of the disk holders 11 to 15. FIG.
7 and (3) are cross-sectional views of the disk holder moving means 30, showing 15 height positions P1 to P11, and FIGS.
0, (3) is a side view of a main part of the apparatus 1, which will be described with reference to FIGS. 21 to 34 for explaining the movement of the disk and the disk holders 11 to 15 in the apparatus 1.

As shown in FIG. 1, in the initial state in which the disk can be stored, the driving belt 45 of the belt driving mechanism 40 is driven.
The distance between the guide mechanism 50 and the guide wall 53 is set to be smaller than the diameter of the disk. In this initial state, the first cylindrical cam 31 is located at the position P6 in the cam groove 33 as shown in FIG. 8 so that the slit 3 of the front panel 2 and the first disk holder 11 have the same height. The engagement pin 18 formed on the flange 16 of the disk holder 11 is located. The second to fifth
The engaging pins 18 formed on the flanges 16 of the disk holders 12 to 15 are located at positions P8 to P11 of the cam groove 34 in the second cylindrical cam 32.

When the disk 71 is inserted into the slit 3 from this state, the belt driving mechanism 40 is driven by the insertion force.
Are moved by the same distance in the direction of arrow D and the guide mechanism 50 is moved by the same distance in the direction of arrow E, as shown in FIGS. 2 and 21. This movement triggers the drive pulley 43 of the belt drive mechanism 40 to move the pulley drive mechanism 84 As a result, the driving belt 45 is rotated counterclockwise to rotate the driving belt 45 counterclockwise. As a result, the disk 71 held between the drive belt 45 and the guide wall 53 rotates in the direction indicated by the arrow F while rotating clockwise.
The belt drive mechanism 40 and the guide mechanism 50
Are further moved slightly apart from each other, and then the device 1
Will be loaded into.

The rotation of the drive belt 45 causes the disk 7
FIGS. 3, 9 and 22 show a state in which 1 is mounted on the first disk holder 11. In this state, the disc 71 is the disc supporting portion 23 of the disc holder 11,
24 stably supports the peripheral edge over about 180 degrees. When reproducing the loaded disc 71, first, the belt driving mechanism 40 is moved in the direction of arrow D by the belt / guide driving mechanism 85, and the guide mechanism 50 is moved in the direction of arrow E by the belt / guide driving mechanism 85.
0 and the guide mechanism 50 are in a non-contact state.

Thereafter, the mechanical chassis 63 is rotated counterclockwise about 45 degrees about the shaft 68 from the retracted position shown in FIG. 3 to the position shown in FIG. The mechanical chassis 63 is moved to the position shown in FIGS. 5 and 23 where the center of rotation is aligned with the center of the center hole 81 formed in the disk 71.
Moved by

From this position, the second cylindrical cam 32 is not rotated, and only the first cylindrical cam 31 is driven by the cylindrical cam drive mechanism 82.
By rotating the disk holder 11 by 180 degrees counterclockwise to lower the disk holder 11 from the position P6 to the position P7 by the pitch L2, the disk 71 is placed on the turntable 61 as shown in FIGS. Turntable 61 with self-chucking mechanism
Then, the disk 71 is chucked. When the disk holder 11 is lowered, the other disk holders 11 to 15 do not move.

After the disk 71 is chucked on the turntable 61, the mechanical chassis 63 is moved in the direction of arrow G in FIG. 5 by the mechanical drive mechanism 86 so that the disks 71 are pulled out of the disk holder 11 and It will be in a non-contact state. This state is shown in FIGS. 6, 11 and 25. Therefore, the mechanical chassis 63
The disk 71 is pulled out of the disk holder 11 by the parallel movement from FIG. 5 to FIG. 6, and the turntable 61, the mechanical chassis 63, and the mechanical chassis driving mechanism 86 constitute a disk extracting means.

At the position where the disk is pulled out,
By rotating only the first cylindrical cam 31 clockwise by 360 degrees by the cylindrical cam drive mechanism 82, the disc holder 11 has a pitch L from the position P7 to P5 in FIG.
The distance is increased by twice the distance of 2. FIG. 12 and FIG.
6 is shown.

Thereafter, the mechanical chassis 63 is moved in the direction of arrow F in FIG. 6 by the mechanical drive mechanism 86, and the disk 71 is moved to the same position as in FIG. 5 in plan view. At this time, FIGS. As shown in the figure, the disk holder 11 is moved in the direction perpendicular to the disk surface by twice the disk 71 and the pitch L2. Therefore, even when the disk 71 fluctuates or the mechanical chassis 63 is supported by the suspension, and when the mechanical chassis 63 vibrates in the vertical direction due to external vibration or the like, the rotating disk 71 is moved to another member. Contact is prevented.

Here, the mechanical chassis 63 is arranged so that the turntable 61 is located between the front panel 2 and the disks held by the disk holders 11 to 15 at the retracted position shown in FIGS. As described above, the disk 71 stored in the disk holder 11 is once pulled out to the disk pull-out position shown in FIG.
The front panel 15 cannot be arranged close to the front panel 2, and it is necessary to provide a required space with the front panel 2.

However, in this embodiment, the mechanical chassis 63 is arranged in this space, and in particular, the turntable 61 in the retracted position is an occupied plane area formed by transferring the disk 71 from FIG. 2 to FIG. Are located at positions that do not overlap the disks stored in the disk holders 11 to 15. Therefore,
Since there is no need to separately secure a space for the turntable 61 at the retracted position, the width direction (DE direction in FIG. 1) and the depth direction (FG in FIG. 1) of the device.
In the direction (1)).

The operation of storing another disk 72 in the disk holder 12 after the reproduction of the disk 71 is completed will be described below. After the reproduction of the disc 71 shown in FIGS. 5, 13 and 27 is completed, the mechanical chassis 63 is moved in the direction of arrow G in FIG.
26, the disk 71 is moved to the disk pull-out position. Then, the disk holder 11
From the position P5 to the position P7 (FIG. 7) shown in FIGS.
), Only the cylindrical cam 31 is rotated 360 degrees counterclockwise by the cylindrical cam drive mechanism 82, but the cylindrical cam 32 does not rotate at this time. By this rotation, the disk holder 11 is aligned with the disk 71 at the height position.

In this state, the mechanical chassis 63 is moved in the direction of arrow F by the mechanical chassis driving mechanism 86, so that the disk 71 is moved as shown in FIGS. 5, 10 and 24.
Is inserted into the disc holder 11. Thereafter, only the cylindrical cam 31 is rotated 180 degrees clockwise to move the disk holder 11 from the position P7 in FIG. 7 to P6, raise the disk 71 as shown in FIGS. And the disk 71 is released from chucking. Furthermore, the mechanical drive mechanism 8
6, the mechanical chassis 63 is moved from the reproduction position shown in FIG. 5 through the position shown in FIG. 4 to a retreat position which does not hinder the vertical movement of the disk as shown in FIG.

Thereafter, only the cylindrical cam 31 is rotated by 180 degrees counterclockwise by the cylindrical cam drive mechanism 82, and FIG.
After the disk holder 11 is once returned to the position P7 as shown in FIG.
And 32 are both rotated 360 degrees clockwise, so that the disk holder 11 at the position P7 is moved to the position P5.
The disk holder 12 at the position P8 is raised to the position P7, the disk holder 13 at the position P9 is raised to the position P8, the disk holder 14 at the position P10 is raised to the position P9, and the disk holder 15 at the position P11 is raised to the position P10 ( (See FIG. 7). With the rise of the disk holder 11, the chucking between the turntable 61 and the disk 71 is released. This state is shown in FIG.

By rotating the cylindrical cam 31 only 180 degrees clockwise by the cylindrical cam drive mechanism 82 without rotating the cylindrical cam 32 from the state shown in FIG. 14, the disk holder 12 is moved from the position P7 to the position P6. (See FIG. 7). Thereby, the disk holder 12 is aligned in the height direction with the slit 3 formed in the front panel 2. This state is shown in FIG. 15 and FIG.

From this state, as shown in FIG. 1, the distance between the drive belt 45 of the belt drive mechanism 40 and the guide wall 53 of the guide mechanism 50 is moved to a position smaller than the diameter of the disk. Thereafter, the disk 72 is loaded from the slit 3 and the disk 72 is held by the disk holder 12 in the same manner as described above, as shown in FIGS.

Thereafter, when reproducing the disk 72,
After moving the mechanical chassis 63 (FIG. 30), only the first cylindrical cam 31 is rotated 180 degrees counterclockwise without rotating the second cylindrical cam 32, and the disk 72 is chucked to the turntable 61. (FIGS. 17 and 31),
After the mechanical chassis 63 is moved and the disk 72 is pulled out from the disk holder 12 (FIGS. 18 and 32), the first cylindrical cam 31 is rotated without rotating the second cylindrical cam 32.
Rotate only 360 degrees clockwise to disc holder 1
2 is moved to a position P5 in FIG. 7 and the disk holder 11 is moved to a position P4 (FIGS. 19 and 33).
3 is moved to a reproduction state (FIGS. 20, 34).

As described above, the second cylindrical cam 32
And the case where only the first cylindrical cam 31 rotates without rotating, and the case where both rotate within the same angle range.
That is, during playback of the disc, the disc holder corresponding to the disc is located at the position P5 (see FIG. 7).
When the disc holder is moved from this position to a position P7 at which the disc holder is aligned with the reproduction position in the height direction in order to mount the disc after reproduction on the disc holder, the cylindrical cam 32 is controlled so as not to rotate. Similarly, when reproducing the loaded disc, when moving from the position P6 aligned with the loading surface in the height direction to the position P7 aligned with the chucking position, the first cylindrical cam is similarly formed. Only 31 is driven to rotate counterclockwise.

On the other hand, in a state where all disks are stored in the apparatus 1, for example, the first disk holder 11
When the disc mounted on the fourth disc holder 14 located fourth from the top is reproduced after the reproduction of the disc 71 mounted on the cylindrical cams 31 and 32 is completed.
Are rotated clockwise so that the disk holder 11 is at the position P3, the disk holder 12 is at the position P4, the disk holder 13 is at the position P5, the disk holder 14 is at the position P7, and the disk holder 15 is at the position P8 (see FIG. 7). After that, the disc holder 14 is moved from the position P7 to the position P6 only by the cylindrical cam 31 and then controlled to move to the positions P7 and P5 in time series.

Accordingly, by separating the cylindrical cams 31 and 32, the disk holder on which the disk to be reproduced is mounted is moved to the position P7 aligned with the reproduction position, and then the disk holder positioned below the disk holder is moved. Further, since the disc holder can be moved to the position P5 without moving the disc mounted thereon, a sufficient clearance can be obtained below the disc to be reproduced.

The reproducing means moving mechanism in the above-described embodiment includes a turntable 61 and an optical pickup 66.
The mechanism 63 is rotated counterclockwise by 45 degrees and then moved in parallel to move the turntable 61 from a retracted position where the disk does not overlap the disk to a disk reproducing position. The present invention is not limited to this, and various moving methods can be adopted depending on the configuration of the reproducing means moving mechanism.

The disk holder moving mechanism in the above-described embodiment is constituted by the cylindrical cams 31 and 32 which engage with the disk holders 11 to 15, but the present invention is not limited to this, and the same operation can be achieved. Other mechanisms can be employed.

Further, in the above-described embodiment, the drive belt 45 engaging with the periphery of the disk is used as the disk transfer means.
However, the present invention is not limited to this. For example, it is also possible to transfer by a pair of rollers that sandwich the recording surface and the label surface of the disk, and each configuration can take various modes.

Further, in the above-described embodiment, the disk holding member is formed by the disk holder which holds the disk periphery over a range of about 180 degrees, but may be formed by a plate on which the disk is mounted, for example. . In this case, when the disc is placed on the plate such that the recording surface of the disc faces the plate, after the chucking operation, the plate and the plate located below the plate are lowered, and the plate is moved at the time of the lowering. The first and second disk holding member moving mechanisms may be configured so that the plate located above the disk does not move close to the chucked disk.

[0044]

As described above, according to the present invention, it is possible to simultaneously move the disk holding member for selecting a disk, and to move the disk holding member holding the disk to be reproduced at the time of reproducing the disk. ,
Since there is no unnecessary movement of other disk holding members, it is possible to provide a small-sized disk reproducing apparatus capable of reproducing a disk with a sufficient clearance.

[Brief description of the drawings]

FIG. 1 is a main part plan view for explaining the operation of a disk reproducing device in a time-series manner.

FIG. 2 is a main part plan view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 3 is an exemplary plan view for explaining the operation of the disk reproducing device in a time-series manner;

FIG. 4 is an exemplary plan view for explaining the operation of the disk reproducing device in a time-series manner;

FIG. 5 is an essential part plan view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 6 is an exemplary plan view for explaining the operation of the disk reproducing device in a time-series manner;

FIG. 7 is a side view of the cam means.

FIG. 8 is a sectional view taken along the line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 9 is a sectional view taken along line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 10 is a sectional view taken along line AA in FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 11 is a sectional view taken along line AA in FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 12 is a sectional view taken along line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 13 is a sectional view taken along the line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 14 is a sectional view taken along the line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 15 is a sectional view taken along line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 16 is a sectional view taken along line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 17 is a sectional view taken along line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 18 is a sectional view taken along line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 19 is a sectional view taken along line AA of FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 20 is a sectional view taken along line AA in FIG. 1 for explaining the operation of the cam means in a time-series manner.

FIG. 21 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 22 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 23 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 24 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 25 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 26 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 27 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 28 is an essential part side view for explaining the operation of the disk reproducing device in time series;

FIG. 29 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 30 is an essential part side view for explaining the operation of the disk reproducing apparatus in a time-series manner.

FIG. 31 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 32 is an essential part side view for explaining the operation of the disk reproducing device in time series;

FIG. 33 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 34 is an essential part side view for explaining the operation of the disk reproducing device in a time-series manner.

FIG. 35 is an enlarged view of a flange 16;

FIG. 36 is a top view of the belt drive mechanism 40.

FIG. 37 is a sectional view taken along line BB of FIG. 36;

38 is a top view of the guide mechanism 50. FIG.

FIG. 39 is a sectional view taken along line CC in FIG. 38;

FIG. 40 is a circuit block diagram of a disk reproducing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc reproduction apparatus 11-15 Disk holder 30 Disk holder moving means 31 First cylindrical cam 32 Second cylindrical cam 33-34 Cam groove 40 Belt drive mechanism 45 Drive belt 50 Guide mechanism 53 Guide wall 60 Turntable 66 Optical pickup 71-72 Disc 82-83 Cylindrical cam drive mechanism 84 Pulley drive mechanism 85 Belt / guide drive mechanism 86 Mechanical chassis drive mechanism 93 Control circuit

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[Procedure amendment]

[Submission date] December 2, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 21

FIG.

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 6

FIG. 7

FIG. 23

FIG. 24

FIG. 39

FIG. 8

FIG. 9

FIG. 25

FIG. 26

FIG. 27

FIG. 28

FIG. 37

FIG. 10

FIG. 11

FIG. 29

FIG.

FIG. 31

FIG. 32

FIG.

FIG. 13

FIG. 33

FIG. 34

FIG. 14

FIG.

FIG. 35

FIG. 36

FIG. 38

FIG. 16

FIG.

FIG. 40

FIG.

FIG.

FIG.

Claims (2)

[Claims] 1. A plurality of disk holding members for holding respective disks so that the plurality of disks are coaxial, and first and second moving means for moving the plurality of disk holding members in a direction perpendicular to a disk surface. A disc holding member moving unit, a reproducing unit having at least an optical pickup and a turntable for reproducing a disc, and a retreat position where the turntable does not overlap a disc stored in the plurality of disc holding members; A reproducing unit moving mechanism for moving the reproducing unit so that the center of rotation of the disk stored in the disk holding member is located at a reproduction position where the rotation center thereof is substantially aligned; and the first and second disk holding member movements. A first movement state in which the means are driven together to move the plurality of disk holding members; and The first and second disk holding members are driven to move only the disk holding member moving means and to move only the disk holding members engaged with the first disk holding member moving means to the second movement state. A changer-type disc reproducing apparatus, comprising: control means for controlling a moving means. 2. A rotating cam, wherein said first and second disk holding member moving means have coaxial rotation axes, extend in the moving direction of said disk holding member, and have a cam groove formed on an outer surface thereof. 2. The changer-type disc reproducing apparatus according to claim 1, wherein: