JPH0737366A - Disk device - Google Patents

Abstract

(57) [Summary] [Structure] A turntable 14 capable of driving the above-mentioned discs is supported on a disc table 1 on which a plurality of discs can be placed so that the rotation axes of the respective discs are located on the circumference of a virtual circle. The chassis 13 is provided so as to rotate about the rotation axis passing through the center of the virtual circle while maintaining the distance from the disk table 1. [Effect] The rotation range of the chassis 13 and the turntable 14 can be made substantially the same as the virtual circle and can be accommodated within the area occupied by each disk, so that it is necessary for the disk table 1 on which each disk is mounted. The area can be made smaller than that of the conventional one, and hence the size can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device capable of mounting a plurality of disk-shaped recording media and reproducing desired recording media.

[0002]

2. Description of the Related Art In recent years, optical discs such as compact discs and magneto-optical discs such as mini discs are known as disc-shaped recording media for recording and reproducing various information such as music and images. A disk device is conceivable in which a plurality of disks can be mounted in the above device so that these disks can be used in a single device.

As the above-mentioned disc device, for example, a plurality of discs are placed on a disc-shaped disc table,
By rotating the disc table, the desired disc is moved to a predetermined reproducible position,
It is known to selectively reproduce a desired disc.

[0004]

However, in the above-mentioned conventional configuration, when four compact disks having a diameter of 12 cm are mounted, for example, as shown in FIG. 12, each disk 24 'is rotated from the center of rotation of the disk table 31. Since the minimum radius is the distance to the outermost circumference of the disk table 31
, Or the diameter of the rotation range circle required for rotating the disk table 31 is about 290 mm at the minimum. Therefore, the area required for the disk table 31 is larger than the area occupied by the plurality of disks 24 ', which causes a problem of increasing the size.

Further, in order to be able to use disks having different disk diameters, for example, disks having a diameter of 8 cm and a disk having a diameter of 12 cm, a recess into which a 12 cm disk is fitted is formed in the disk table 31, and further, a recess of 8 cm is formed in the recess. The small recess into which the disc is fitted is formed so as to be concentric with the recess.

However, since the stepped portion between the concave portion and the small concave portion is set to be small in order to share the reproducing means for reproducing the 8 cm and 12 cm discs, the 8 cm disc can be easily broken by a shock or the like. There is also a problem in that the 8 cm disc cannot be properly reproduced because the disc protrudes further.

[0007]

In order to solve the above-mentioned problems, in the disk device according to the first aspect of the present invention, a holding table on which a plurality of disk-shaped recording media can be placed rotates and reproduces each of the recording media. Are provided so that the rotation axes of the respective recording media are located on the circumference of a virtual circle on the holding table, and the recording media are rotated by being inserted into the openings. Reproducing means including a driving means and a reading means for scanning the recording medium through the opening to read the information data of the recording medium, and a standby position for avoiding contact between the reproducing means and the recording medium, A moving means for displacing the reproducing means with respect to the holding table is provided between the reproducing means and a reproducible position where the recording medium can be rotated and reproduced, and a rotating means for supporting the reproducing means and the moving means. , The provisional At pivot axis passing through the center of the circle, it is characterized in that is provided so as to rotate relative to the holder while maintaining the distance between the supporter.

According to a second aspect of the present invention, there is provided a disk device according to the first aspect.
In the disk device described above, a stabilizing means for stabilizing the rotation of the recording medium by sandwiching the recording medium with the driving means when the reproducing means is displaced to the reproducible position by the moving means is integrated with the reproducing means. It is characterized in that it is attached to the rotating means so as to rotate in the direction.

In order to solve the above-mentioned problems, a disk device according to a third aspect of the present invention is the disk device according to the first or second aspect, in which a gear member is provided on a support member that rotatably supports the rotating means. The drive gear portion, which is provided coaxially with the rotation shaft of the rotation means, transmits the driving force from the drive means, and displaces integrally with the reproduction means, when the reproduction means is in the standby position. It is characterized in that it is provided so as to mesh with the gear part, and the meshing with the gear part is released when the regeneration means is in the reproducible position.

According to a fourth aspect of the present invention, in the disc apparatus according to the first, second or third aspect, the recording medium has a center hole coaxial with its rotation axis and is displaced integrally with the reproducing means. The holding means is provided so as to have a protruding member which is inserted into a center hole of another recording medium different from the recording medium reproduced by the reproducing means when the reproducing means is displaced to the reproducible position. It has a feature.

According to a fifth aspect of the present invention, there is provided a disk device according to the fourth aspect.
In the disc device described above, when the holding means is displaced to the reproducible position, the holding member comes into contact with a peripheral portion of a center hole of the recording medium to displace the recording medium with respect to a holding base, and the projecting member. It is characterized by having on the base side.

[0012]

According to the structure described in claim 1, since the reproducing means at the standby position does not come into contact with the holding table, the rotation is not hindered. Therefore, the reproducing means can be rotated by the rotating means to the desired position of the recording medium placed on the holding table.

At this time, since the reproducing means rotates about the rotation axis passing through the center of the virtual circle while maintaining the distance from the holding table, the reproducing means is rotated in parallel with the holding table. Can be moved. Therefore, the driving means of the reproducing means can be set so that its rotation axis passes through the circumference of the virtual circle. Accordingly, since the rotation axes of the respective recording media are set on the circumference of the virtual circle, it becomes possible to make the rotation axis of the drive means substantially coincide with the desired rotation axis of the recording medium.

From this, by displacing the reproducing means from the standby position to the reproducible position by the moving means, the driving means of the reproducing means is inserted into the opening to rotate the recording medium, and the reproducing means is rotated. Since the recording medium can be read by scanning the rotating recording medium by the reading means, a desired recording medium can be selected and reproduced.

By the way, conventionally, since a desired recording medium is selected and reproduced by the reproducing means by rotating a holding table on which a plurality of recording media are placed on the reproducing means, each recording medium is occupied. The area required for rotation of the holding table is larger than the area, resulting in an increase in size.

However, in the above arrangement, the opening of the holding table can be formed in the virtual circle so that the reading means can scan, for example, from the rotation axis of the recording medium toward the center of the virtual circle. The rotation range of the moving means and the reproducing means,
It may be substantially the same as the virtual circle. As a result, the rotation range of the reproducing means can be set within the area occupied by each recording medium, so that the area required for the holder on which each recording medium is placed can be made smaller than before.

According to the second aspect of the present invention, since the stabilizing means is attached to the rotating means, the stabilizing means is rotated integrally with the driving means, so that the stabilizing means is driven by the driving means. Can be always placed in a predetermined position.

As a result, the reproducing means is rotated to the desired position of the recording medium, and the moving means displaces the reproducing means to the reproducible position, whereby the recording medium is rotated by the driving means and the driving means. By sandwiching the recording medium between the recording medium and the stabilizing means, the rotation of the recording medium can be stabilized.

Therefore, the above structure can stabilize the rotations of the plurality of recording media placed on the holding table by the single stabilizing means when the recording media are driven by the driving means.

According to the above-mentioned structure, when the reproducing means is in the reproducible position, the meshing between the gear portion and the drive gear portion is released, so that the driving force of the driving means for rotating the recording medium is set. This prevents the rotating means from rotating.

On the other hand, when the reproducing means is in the standby position, the gear portion and the drive gear portion are in mesh with each other, and the rotating means is rotated by the driving force from the driving means. The rotation of the medium and the driving of the rotating means can be combined.

According to the above structure, when the reproducing means is displaced to the reproducible position, the protrusion member is inserted into the center hole of another recording medium different from the recording medium reproduced by the reproducing means. Therefore, the movement of the recording medium in a direction substantially perpendicular to the rotation axis of the recording medium can be restricted.

According to the fifth aspect of the present invention, the recording medium reproduced by the reproducing means is different from the recording medium by the contact member, and the recording medium is displaced by the reproducing means. Since it can be displaced like the recording medium to be reproduced, it is possible to prevent the reproducing means from coming into contact with another recording medium due to the displacement to the reproducible position.

[0024]

【Example】

[Embodiment 1] The following will describe one embodiment of the present invention as Embodiment 1 with reference to FIGS. 1 to 8. In the disk device, as shown in FIG.
And a top lid 28a for opening and closing the upper surface of the case 28, and a disk table (holding table) on which a plurality of disk-shaped recording media, for example, four disks (not shown) can be placed on the upper surface of the case 28. 1 is formed. Examples of the disc include a compact disc and a video disc.

On the disc table 1, disc mounting portions 1a, 1b, 1 on which the respective discs can be placed at equal intervals over the circumference of a virtual circle assumed on the upper surface thereof.
c-1d is formed.

The disk mounting portions 1a, 1b, 1c, 1
d is formed in a two-step circular concave shape that is slightly larger than the above disc. For example, the outer diameter of the above disc is 12 cm.
A compact disc (1a _{1 in the} figure) and a compact disc of 8 cm (1a _{2 in the} figure) of two kinds having different outer diameters can be held and mounted by fitting.

Further, the disc mounting portions 1a, 1b, 1
In c.1d, the disk table 1 from the center of them.
Four openings 1e are formed toward the center of the. In the opening 1e, a turntable (driving means) 14 included in the disc reproducing means described later can be freely inserted and taken out in the rotation axis direction thereof, and an optical pickup (not shown) as a reading means included in the disc reproducing means. No)
Is provided so that the disc can be scanned between the rotation axis of the disc and the central portion of the disc table 1.

The mechanism for reproducing a disc in the above-mentioned disc device is an elevating mechanism for moving the disc reproducing means and the disc holding means up and down, and a rotation for rotating the disc reproducing means and the disc holding means to a designated disc position. And a dynamic mechanism. In addition, the up-down direction in this specification refers to the direction of the rotation axis of the disk.

First, the lifting mechanism will be described.
As shown in FIGS. 3 to 5, a main chassis (supporting member) 2 that supports the elevating mechanism and the rotating mechanism is fixedly provided below the disc table 1, and an upper surface of the main chassis 2 includes: An arc rack portion (gear portion) 2a coaxial with the center of the virtual circle is formed so that its teeth are radially outward.

On the upper surface of the main chassis 2, there is provided a rotary table (rotating means) 3 formed in a substantially circular plate shape in parallel with the virtual circle and a rotary shaft passing through the center of the virtual circle. It is provided so as to rotate while maintaining a distance from the table 1, that is, maintaining parallel to the disk table 1.

On the rotary table 3, rising plates 3A and 3B for movably supporting the lifting mechanism are erected parallel to each other and formed so as to extend in the radial direction from the rotating shaft. Further, the rising plate 3A has a vertical guide groove 3a for supporting the lifting mechanism so as to be vertically movable.
-3b is formed parallel to each other. On the other hand, in the rising plate 3B, the vertical guide grooves 3a of the rising plate 3A are provided.
・ Vertical guide grooves 3c at positions facing 3b
3d are formed respectively.

A shift lever (L) 4 and a shift lever (R) 5 for raising and lowering the disc reproducing means and the like are provided on the main chassis 2 so as to face each other in parallel.

The shift lever (L) 4 is mounted close to the rising plate 3A so as to be movable in the radial direction from the rotary shaft, and a guide shaft described later is inserted to move the guide shaft up and down. Guide grooves 4a-4 having sloped portions
b, and at the bottom, an interlocking groove 4c for interlocking the shift lever (L) 4 and the shift lever (R) 5
Is equipped with.

Further, the shift lever (L) 4 has
A rack portion 4d extending from the center of the rotary table 3 in the radial direction of the rotary shaft is formed. The rack portion 4d drives the shift lever (L) 4 and the shift lever (R) 5 described above.

On the other hand, the shift lever (R) 5 is mounted close to the rising plate 3B so as to be movable in the radial direction from the rotating shaft, and will be described later similarly to the shift lever (L) 4. The guide groove is provided with guide grooves 5a and 5b having a slanted portion for inserting and removing the guide shaft and moving the guide shaft up and down, and a lower portion is provided with an interlocking groove 5c for interlocking the shift lever (L) 4 and the shift lever (R) 5. I have it.

On the rotary table 3, a shift connecting lever 6 for interlocking the shift lever (L) 4 and the shift lever (R) 5 is rotated about a fulcrum shaft 3e provided upright on the rotary table 3. The guide bosses 6a, 6b at both ends thereof are inserted into the respective interlocking grooves 4c, 5c.

Between the shift levers (L) 4 and the shift levers (R) 5 provided so as to face each other, a mechanical holder 7 for holding a disc reproducing means including an optical pickup 17 and the like described later is provided. It is provided so as to be movable in the moving axis direction. The mechanical holder 7 has the aforementioned guide shafts 7a, 7b, 7c, 7d extending outward.

The guide shaft 7a has guide grooves 4a and 3a.
Is inserted into the guide groove 4a, 3a and is movably supported by the guide grooves 4a and 3a. The guide shaft 7b is inserted into the guide groove 4b and 3b and is movably supported by the guide grooves 4b and 3b. Inserted in 3c and movably supported by the guide grooves 4c and 3c, the guide shaft 7d is inserted into the guide grooves 4d and 3d and movably supported by the guide grooves 4d and 3d.

A shift gear 8 for driving the shift lever (L) 4 is provided on the rotary table 3. The shift gear 8 has a gear portion 8a and a pulley 8b coaxially, and the gear portion 8a is constantly meshed with the rack portion 4d of the shift lever (L) 4.

Further, on the rotary table 3, a shift motor 10 for driving the shift gear 8 and a motor pulley 11 attached to its rotary shaft 10a are provided, and the pulley 8b and the motor pulley 11 are provided.
A belt 12 for transmitting a driving force is stretched between and.

Next, the operation of the lifting mechanism will be described. The rotation of the shift motor 10 depends on the rotation of the motor pulley 1.
1. The rack portion 4d which rotates the shift gear 8 via the belt 12 and meshes with the gear portion 8a of the shift gear 8
Shift lever (L) 4 having a rotary table 3
Move horizontally in the radial direction.

The shift lever (R) 5 is horizontally moved in the opposite direction to the shift lever (L) 4 by the movement of the shift lever (L) 4 being transmitted through the shift connecting lever 6. The movement of the shift lever (L) 4 and the shift lever (R) 5 causes the mechanical holder 7 to move in the vertical direction which is the rotation axis direction.

That is, the guide shafts 7a, 7b, 7c, 7d of the mechanical holder 7 are connected to the vertical guide grooves 3a, 3b of the rising plates 3A, 3B, the shift lever (L) 4 and the shift lever (R). 5 guide grooves 4a, 4b, 5
The mechanical holder 7 moves up and down by moving along the inclined portions a. The disk reproducing means held by the mechanical holder 7 is lifted and lowered by the lifting mechanism as described above.

Next, the disk reproducing means, the disk holding means, and the rotating mechanism for rotating the above-mentioned means will be described. In the disc device, as shown in FIGS. 1 and 4, the CD chassis 13 holding the disc reproducing means is provided on the mechanical holder 7 above the rotary table 3. The spindle motor 16 is attached to the lower surface of the CD chassis 13, and the C
A turntable 14 and a drive pulley 15 are coaxially attached to the upper surface of the D chassis 13, and are press-fitted and fixed to the tip of the rotary shaft of the spindle motor 16. Therefore, the rotary shaft of the spindle motor 16 rotatably penetrates the CD chassis 13.

The optical pickup 17 described above is mounted on the CD chassis 13 so as to be movable in the radial direction of the rotary table 3. The optical pickup 17 is driven by a pickup drive mechanism (not shown) incorporated on the CD chassis 13 and scans the rotating disk 24 held above to read information on the disk 24. It is like this.

On the CD chassis 13, a disc holding angle (holding means) 18 for holding each disc 24 by being inserted into the center hole 24a of each disc 24 different from the disc 24 driven by the turntable 14. Are provided so as to face the disc table 1.

The disc holding angles 18 are substantially T extending from the center of the rotary table 3 in the radial direction.
Are formed in a character shape and have three arm portions 18a ... When the turntable 14 drives the disc 24, the disc 2 is attached to the tip of each arm portion 18a.
The disk holding projections 18b that can be fitted into the four center holes 24a are respectively provided toward the disk table 1.

Therefore, the disc holding angle 1
The reference numeral 8 is adapted to rotate integrally with the rotary table 3 and move up and down integrally with the disc reproducing means such as the turntable 14.

On the upper surface of the rotary table 3, the disc 24 on the turntable 14 is mounted.
A stabilizer angle 19 for pressing the disk 4 to stabilize the rotation of the disk 24 is attached.

The stabilizer angle 19 is erected from almost the center of the rotary table 3, extends through the center of the disc table 1 and extends above the disc table 1, and the erection 19a. Disc table 1 bent from the tip of
And an extension portion 19b extending in parallel with the turntable 14 and extending to a position facing the turntable 14.

Furthermore, at the tip of the extending portion 19b,
A stabilizer (stabilizing means) 20 for stabilizing the rotation of the disk 24 by pressing the disk 24 placed on the turntable 14 against the turntable 14 by magnetic force or the like is coaxial with the rotation axis of the turntable 14. It is attached so that it can be rotated.

As shown in FIGS. 1 and 6, a rotary drive angle 21 is extended outward on the upper surface of the CD chassis 13, and the drive force of the spindle motor 16 is transmitted to the tip of the rotary drive angle 21. The rotary drive gear 2 for rotating the rotary table 3
2 is rotatably attached.

The rotary driving gear 22 includes a pulley portion 22a to which a driving force is transmitted from the driving pulley 15 via a belt 25, and a gear which rotates below the pulley portion 22a integrally with the pulley portion 22a. Part 22b
And have.

On the other hand, on the rotary table 3, FIG.
As also shown, the rotary gear 23 to which the driving force is transmitted from the rotary drive gear 22 is rotatably provided. The rotary gear 23 has a gear portion 2 at the bottom thereof.
3a and a gear portion 23b above the gear portion 23a. The rotary drive gear 22 and the rotary gear 23 form a drive gear portion for transmitting the drive force of the spindle motor 16 for rotating the rotary table 3.

As shown in FIGS. 7 and 8, the gear portion 23a always meshes with the circular arc rack portion 2a of the main chassis 2, and the gear portion 23b moves the CD chassis 13 in the vertical direction. Accordingly, the rotary drive gear 2
The two gear portions 22b are arranged so that they can be meshed with each other and a position where the meshing is released.

Next, the disk reproducing means, the disk holding means, and the rotating mechanism configured as described above will be described. First, as shown in FIGS. 1 and 5, the mechanical holder 7 is held in the case 28 by moving upward in the case 28 by the elevating mechanism. As a result, the mechanical holder 7
The CD chassis 13 held by the CD chassis 13 also rises and is held at that position, and the turntable 14, the drive pulley 15, the spindle motor 16, the optical pickup 17, the disc holding angle 18, the rotary attached to the CD chassis 13 are held. The drive angle 21 and the rotary drive gear 22 are also raised and held.

At this time, the disc 24 mounted on the disc mounting portion 1d, for example, on the disc table 1 is sandwiched between the ascending turntable 14 and the stabilizer 20 located above the turntable 14, and is turned by the stabilizer 20. It is pressed and held on the table 14.

When the disc 24 is reproduced, the spindle motor 16 is rotated in the above state, so that the disc 24 is rotationally driven by the spindle motor 16 via the turntable 14 and starts to rotate.

Then, the information disc is read from the recording surface of the rotating disc 24 by the optical pickup 17 positioned below the disc 24 and scanning in the radial direction. The disc reproducing means includes the optical pickup 17 and the spindle motor 16 as described above.

At this time, each of the disks 24 mounted on the other disk mounting portions 1a, 1b, 1c different from the disk mounting portion 1d has its center hole 24a.
The disk holding projections 18b of the disk holding angle 18 are inserted into the disk holding angle 18, respectively, so that the movement in the lateral shift direction is restricted and the positioning is fixed.

As a result, it is possible to avoid the inability to reproduce the disc 24 due to the displacement of the disc 24 that is not driven, and it is possible to improve the reliability of reproducing each disc 24. In addition, the two-stage concave disk mounting portions 1a to 1
Since it is possible to prevent the displacement of the small-diameter disc placed on d and prevent the reproduction of the small-diameter disc, it is possible to set the step inside each of the disc mounting portions 1a to 1d to be small and to achieve the thinning.

Next, the disc 2 in the reproduction state as described above.
4 will be described for each operation when another disk 24 is exchanged for reproduction. First, after stopping the spindle motor 16, as shown in FIG.
When the CD chassis 13 and the like are lowered, the disc mounting portion 1
The turntable 14 and the disc holding protrusions 18a to 18d are separated from the discs 24 mounted on the a to 1d. At this time, the rotary drive angle 21 also descends as the CD chassis 13 descends.

As a result, as shown in FIG. 8, the tip end portion of the guide shaft 21a of the rotary drive angle 21 is inserted into the boss hole 3d provided upright on the rotary table 3, so that it is integrated with the guide shaft 21a. The rotary drive gear 22 that rotates in a horizontal direction is guided to a predetermined position. At this time, the gear portion 22b of the rotary drive gear 22 meshes with the gear portion 23b of the rotary gear 23.

After the descent of the CD chassis 13 and the like is completed in this way, the drive pulley 1 is rotated by rotating the spindle motor 16 as shown in FIGS.
5, the rotary gear 23 rotates via the belt 25 and the rotary drive gear 22. At this time, the gear portion 23a of the rotary gear 23 attached to the rotary table 3 and the arc rack portion 2a on the main chassis 2
Since the and are meshed, the rotary table 3
It is rotated by the rotation of the rotary gear 23.

When the rotary table 3 rotates in this way, the turntable 14 rotates, but as shown in FIG. 4, the turntable 14 and the disc holding projections 18a to 18d are preliminarily formed on the respective discs 24 and discs. Since it descends so as to be separated from the table 1, there is no hindrance to the rotation of the rotary table 3, and each of the discs 24 is attached to the turntable 1.
It is also possible to avoid the risk of damage due to contact with the 4 or the like.

By such rotation of the rotary table 3, the disc 2 desired by the turntable 14 is obtained.
4, the spindle motor 16 stops rotating and the rotary table 3 stops rotating.

After that, when the CD chassis 13 or the like is raised by the elevating mechanism, the meshing of the rotary drive gear 22 and the rotary gear 23 is released, so the drive of the rotary table 3 by the rotation of the spindle motor 16 is released. Meanwhile, the disk 24 is fixed, that is, chucked by the turntable 14 and the stabilizer 20. As a result, the disk 2
4 is ready to be reproduced.

[Second Embodiment] Next, another embodiment of the present invention will be described as a second embodiment with reference to FIGS.
The disk device of the second embodiment is provided with a new disk holding means in place of the disk holding means of the first embodiment, and the other structure is the same. Therefore, in the following description, members having the same function are assigned the same member numbers as in the first embodiment, and the description thereof is omitted.

In the disc device, as shown in FIG. 9, when the disc 24 is held in a reproducible state on the turntable 14, another disc 24 different from the disc 24 driven by the turntable 14 is loaded. A disc holding angle 26 for holding is provided.

Like the disc holding angle 18 in the first embodiment, the disc holding angle 26 has substantially T-shaped arm portions 26a, and these arm portions 26a ...
At the tip of the disk 24, there is provided a substantially cylindrical disk holding projection (contact member) 26b that abuts the peripheral edge of the center hole 24a of the disk 24 and holds the disk 24.

In each of the disc holding projections 26b, the rotary table 3 rotates and the turntable 14
When located coaxially with the desired center hole 24a of the disk 24, it is provided so as to be coaxial with the center hole 24a of another disk 24 different from the disk 24.

Further, each of the above-mentioned disk holding projections 26b
Are formed so that when the CD chassis 13 rises from the standby position to the reproducible position, their tips come into contact with the lower surfaces of the peripheral portions of the center holes 24a of the respective discs 24 to raise the respective discs 24. Has been done. That is, when the CD chassis 13 is raised to the reproducible position, each of the discs 24 is raised in the same manner as the disc 24 which is raised by the turntable 14.

In addition, each of the disc holding projections 26b
At the tip of each of the cylindrical projections 26c, each of which has a substantially columnar shape and can be inserted into the center hole 24a, is erected coaxially. When the CD chassis 13 rises to the reproducible position, the protrusions 26c are inserted into the center holes 24a, respectively, when the CD chassis 13 is in the standby position and separated from the lower surfaces of the discs 24 facing each other. The radial movement of each disk 24 is regulated.

Next, the operation of the configuration of the second embodiment will be described. When the disk 24 is brought into a reproducible state, the CD chassis 13 is raised by the elevating mechanism shown in the first embodiment, and the CD The disc holding angle 26 attached to the chassis 13 is also raised.

At this time, the protrusions 26c are respectively inserted into the center holes 24a of the other discs 24, which are different from the discs 24 raised by the turntable 14, so that the discs 24 can be moved in the radial direction. It is regulated, positioned and fixed.

Simultaneously with the above positioning, the tips of the disc holding projections 26b ... Abut on the lower surface of the peripheral edge of the center hole 24a to raise the discs 24, so that the turntable 14 raises and holds them. The other discs 24 different from the discs 24 are prevented from coming into contact with the ascending CD chassis 13 and the mechanical holder 7.

As a result, in the structure of the second embodiment, the mounting position of the CD chassis 13 or the like at the standby position is closer to the disk 24 than the standby position of the optical pickup 17 or the CD chassis 13 in the first embodiment. Since it can be provided in the same manner, it is possible to reduce the thickness.

Further, since it is not necessary to mount only the optical pickup 17 so as to project from the CD chassis 13 toward the disc 24 side, the optical pickup 7 can be held more firmly, and the drive of the optical pickup 17 can be stabilized. ing.

Next, FIG. 10 shows an application example in which the holding of the disk 24 is further strengthened in the configuration of the second embodiment.
And it demonstrates based on FIG. In the disk device in this application example, instead of the stabilizer angle 19 in the first embodiment, as shown in FIGS. 10 and 11, the disks 24 placed on the disk mounting portions 1a to 1d are replaced with the disk holding protrusions 26b. ... Or stabilizers 27a, 27b, 27c and 27d for stabilizing the rotation of the disc 24 with the turntable 14 interposed therebetween.
Is rotatably provided on the upper lid 28a.

The stabilizers 27a to 27d are provided so that when the upper lid 28a is closed, the respective rotation axes thereof coincide with the center axes of the disk holding projections 26b ... Or the turntable 14.

Each such stabilizer 27a-27
By providing d, each disk 24 placed on the disk table 1 is restricted from moving in the radial direction by each projection 26c of the disk holding angle 26 when the CD chassis 13 or the like is raised to the reproducible position. Further, it is pushed up by the disc holding protrusions 26b and is sandwiched between the stabilizers 27a to 27c. Also,
The turntable 14 also holds the disk 24 placed on the disk mount 1d, for example.

As a result, the discs 24 are restricted not only in the radial direction but also in the vertical movement, which is the rotation axis direction of the discs 24, and the holding of the discs 24 in the reproducible position is further strengthened. To be done.

[0083]

As described above, the disk device according to the first aspect of the present invention mounts a plurality of disk-shaped recording media on the circumference of a virtual circle so that the rotation axes of the respective recording media are positioned. The rotating means for supporting the reproducing means capable of reproducing the recording medium with respect to the obtained holding table is rotated about the rotation axis passing through the center of the virtual circle while maintaining the distance from the holding table. It is the configuration provided in.

Therefore, in the above structure, the rotation range of the rotating means and the reproducing means can be made substantially the same as the virtual circle, and can be accommodated within the area occupied by each recording medium. Since the area required for the holders on which the respective media are placed can be made smaller than in the conventional case, there is an effect that the size can be reduced.

A disk device according to a second aspect of the present invention is
Further, a stabilizing means for stabilizing the rotation of the recording medium by sandwiching the recording medium with the driving means is attached to the rotating means so as to rotate integrally with the reproducing means. Is.

Therefore, in the above configuration, the rotation of the plurality of recording media placed on the holding table can be stabilized by the single stabilizing means when the recording media are driven by the driving means, respectively. It has the effect of being able to achieve down.

A disk device according to claim 3 of the present invention is
Further, a gear portion is provided coaxially with a rotating shaft of the rotating means on a supporting member that rotatably supports the rotating means, and a driving force from the driving means is transmitted to the reproducing means. The drive gear part that is integrally displaced meshes with the gear part when the reproducing means is in the standby position, and the meshing with the gear part is released when the reproducing means is in the reproducible position. It is the structure provided as follows.

Therefore, in the above construction, the driving force of the driving means is transmitted to the gear portion when the reproducing means is in the standby position,
When the regeneration means is in the reproducible position, the transmission of the driving force to the gear portion is cut off. Therefore, the drive unit can be used to drive the rotating unit and the recording medium, and the cost can be reduced.

A disk device according to a fourth aspect of the present invention is
Further, the recording medium has a center hole coaxial with its rotation axis, and the holding means that is integrally displaced with the reproducing means is reproduced by the reproducing means when the reproducing means is displaced to the reproducible position. The recording medium is configured so as to have a protrusion member that is inserted into the center hole of another recording medium different from the medium.

Therefore, in the above construction, when the reproducing means is displaced to the reproducible position, the projecting member is inserted into the center hole of another recording medium different from the recording medium reproduced by the reproducing means. Since the movement of the recording medium in the direction substantially perpendicular to the rotation axis of the medium can be regulated, the displacement of the recording medium due to a shock or the like can be avoided, and the reliability in reproducing the recording medium can be improved. Has the effect.

A disk device according to a fifth aspect of the present invention is
Further, the holding means has an abutting member on the base side of the projecting member that abuts on the peripheral edge of the center hole of the recording medium to displace the recording medium with respect to the holding base when the holding means is displaced to the reproducible position. It has a structure.

Therefore, with the above structure, another recording medium different from the recording medium reproduced by the reproducing means can be displaced by the contact member in the same manner as the recording medium reproduced by the reproducing means. It is possible to prevent the displaced reproducing means from coming into contact with another recording medium.

With the above arrangement, the user does not need to consider contact between the reproducing means and another recording medium, and the reproducing means can be provided closer to the recording medium. Therefore, it is possible to reduce the thickness.

[Brief description of drawings]

FIG. 1 is a main part plan view showing a rotating mechanism of a disk device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the disk device.

FIG. 3 is a plan view of an essential part showing an elevating mechanism of the disk device.

4 is a cross-sectional view of a standby position in the disk device, which is a cross section taken along the line II of FIG.

5 is a sectional view of a reproducible position in the disc device, which is a sectional view taken along the line II of FIG.

FIG. 6 is an enlarged plan view of the rotating mechanism.

FIG. 7 is a cross-sectional view of an essential part of a reproducible position in the rotating mechanism, which is a cross section taken along line II-II in FIG.

FIG. 8 is a sectional view of a main part of a standby position in the rotating mechanism, which is a sectional view taken along the line II-II in FIG.

FIG. 9 is a cross-sectional view of essential parts of a disk device according to a second embodiment of the present invention.

FIG. 10 is a perspective view of the disk device.

FIG. 11 is a cross-sectional view of essential parts of a disk device as an application example of the second embodiment.

FIG. 12 is a plan view of a conventional disc table.

[Explanation of symbols]

 1 disk table (holding table) 3 rotary table (rotating means) 14 turntable (driving means) 17 optical pickup (reading means)

Claims (5)

[Claims] 1. A holding table on which a plurality of disk-shaped recording media can be placed has openings for rotating and reproducing each recording medium, and on a circumference of a virtual circle on the holding table. A drive unit that is provided so as to position the rotation axis of each recording medium and is inserted into the opening to rotate the recording medium, and the recording medium is scanned through the opening to read the information data of the recording medium. Reproducing means including a reading means is provided, and the reproducing means is provided between a standby position for avoiding contact between the reproducing means and the recording medium and a reproducible position where the recording medium can be rotated and reproduced by the reproducing means. A moving means for displacing the moving table with respect to the holding table, and a rotating means for supporting the reproducing means and the moving means maintains a distance from the holding table on a rotating shaft passing through the center of the virtual circle. While holding the above To the disk device, characterized in that is provided so as to rotate. 2. Stabilizing means for stabilizing the rotation of the recording medium by sandwiching the recording medium with the driving means when the reproducing means is displaced to the reproducible position by the moving means.
2. The disk device according to claim 1, wherein the disk device is attached to the rotating means so as to rotate integrally with the reproducing means. 3. A reproducing member, wherein a gear portion is provided coaxially with a rotating shaft of the rotating means on a supporting member for rotatably supporting the rotating means, and a driving force from the driving means is transmitted. A drive gear portion that is integrally displaced with the gear portion meshes with the gear portion when the reproducing means is in the standby position, and disengages with the gear portion when the reproducing means is in the reproducible position. 3. The disk device according to claim 1, wherein the disk device is provided so that 4. The recording medium has a center hole coaxial with its rotation axis, and a holding means that is integrally displaced with the reproducing means is moved by the reproducing means when the reproducing means is displaced to a reproducible position. 4. A projection member which is inserted into a center hole of another recording medium different from the recording medium to be reproduced is provided.
The disk device described. 5. The holding means, when displaced to the reproducible position, contacts the peripheral edge of the center hole of the recording medium to displace the recording medium with respect to the holding table, and the abutting member of the projecting member. The disk device according to claim 4, wherein the disk device is provided on the base side.