JP3169317B2 - Disc playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk reproducing apparatus, and more particularly, to a disk reproducing apparatus capable of storing a plurality of disks and selectively reproducing them.

[0002]

2. Description of the Related Art Hitherto, disc reproducing apparatuses mainly storing a plurality of audio compact discs and selectively reproducing one of the compact discs have been commercialized in various systems.
Above all, the method based on Japanese Patent Application Laid-Open No. 3-83262 is
It is widely accepted as a system that has obtained the same convenience as a single playback device.

In this system, as shown in FIGS. 23 to 25, a plurality of disks 105A, 105B, 105C are placed on trays 101A, 101B, 101C one by one.
The stockers 102, which are stacked coaxially, are moved up and down with respect to all the disks. And
The stocker 102 is moved up and down so that the desired height of the disc matches the height for horizontal conveyance, the disc is conveyed to the position of the reproducing means 103 together with the tray by the drawer 104, and the disc is moved together with the tray by the drawer 104. Is carried out of the apparatus.

FIG. 23 shows a state in which a disk 105A is placed on a tray 101A on a drawer 104 that has exited the apparatus. In this case, the disk 105A is transported horizontally along with the tray 101A, Is stored at the bottom. FIG. 24 shows a state in which the reproduction means 103 is reproducing the lowermost disk 105A, and FIG.
This shows a state where the reproducing means 103 is reproducing C.

[0005]

FIG. 23 to FIG. 2 described above.
In the disk selection method shown in FIG. 5, the size of the stocker 102 in the thickness direction (vertical direction) is required to be twice as large as the stocker in order to move the stocker 102 loaded with all the disks up and down.
For this reason, there is a natural limit to reducing the vertical dimension of the mechanism and downsizing the device.

Accordingly, a technical problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, and the purpose is to store a plurality of discs and selectively reproduce them. In a possible disc playback device,
An object of the present invention is to realize a mechanism having a smaller vertical dimension than the conventional method of moving the disk storage unit up and down.

[0007]

In order to achieve the above-mentioned object, a disk reproducing apparatus according to the present invention includes a drawer which reciprocates between a disk take-out position and a reproduction position, and has a plurality of inclination angles at the reproduction position. The disc storage section is provided with a plurality of trays that can be moved only in the plane direction of the disc, and is provided in layers and radially so as to match the plurality of tilt angles of the drawer. . Further, in order to play a disc on a disc transport path inclined at a plurality of inclination angles, a disc reproducing means capable of changing a posture corresponding to the plurality of inclination angles is provided.

[0008]

By the above means, the vertical movement of the disk storage portion, which has been restricted by the vertical dimension of the mechanism in the prior art, can be eliminated, so that a mechanism with a small vertical dimension can be realized, and the size of the disk reproducing apparatus can be reduced. Can be achieved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to an embodiment shown in the drawings. The present embodiment is an example of application to a disc reproducing apparatus for three compact discs.

FIG. 1 is an exploded perspective view of a disc reproducing apparatus according to the present embodiment, FIGS. 2, 3 and 4 are enlarged views showing details of FIG. 1, respectively, and FIG. FIG. 3 is an exploded perspective view showing a drawer and a sub-chassis, FIG. 3 is an exploded perspective view mainly showing a sub-chassis rotating mechanism and a disk drive unit elevating mechanism, and FIG. 4 is an exploded perspective view mainly showing a disk loading mechanism.

First, FIG. 2 will be described. In FIG. 2, 2 is a drawer, 3 is a main tray of the drawer 2, and 7 is a sub chassis.

As shown in the drawing, the inclined grooves 2a and 2b of the drawer 2 descending toward the front side and two similar inclined grooves (not shown) are provided on the main tray 3 having a disk mounting portion.
By supporting each of the projections 3a, 3b, 3c, 3d slidably, the drawer 2 supports the main tray 3 so as to be able to move in parallel in the direction of the inclined groove. However, on the side of the protrusions 3a and 3b, the coil spring 11
The main tray 3 is urged toward the projection 2i provided on the drawer 2, and a coil spring (not shown) urges the main tray 3 on the side of the projections 3c and 3d. It is held at the upper end of the inclined groove.

The long groove 7c of the sub-chassis 7 slidably supports the two projections 2g and 2h of the drawer 2, and similarly, the long groove 7d of the sub-chassis 7 slidably supports the two projections (not shown) of the drawer 2. The sub-chassis 7 supports the drawer 2 slidably in the long groove direction. The lower surface of the drawer 2 integrally has rack portions 2e and 2f, and the pinions 12R and 12L meshing with the rack support the shafts 1Ra and 1La respectively set up on the side chassis 1R and 1L shown in FIG. As an axis, side chassis 1R, 1
Outside L, it is held rotatably. The shaft 1Ra is inserted through a hole 7a of the sub-chassis 7, and similarly, the shaft 1La is inserted through a hole (not shown) of the sub-chassis 7, so that the shafts 1Ra and 1La form a rotation fulcrum of the sub-chassis 7.

On the upper part of the sub-chassis 7, a clamp holder 8 is rotatably supported at fulcrums 7f and 7g. A pin 8a set on the clamp holder 8 is provided on the upper surface of the drawer 2 with the clamp holder 8 and the disk. The clamper 9 is in contact with its own weight. When the drawer 2 slides with respect to the sub-chassis 7 and the pin 8a falls into the concave portion 2j provided on the upper surface of the drawer 2, the clamp holder 8 rotates according to the concave portion 2j, and the clamp holder 8 rotates. The disc clamper 9 supported by the disc is lowered.

Next, FIG. 3 will be described. In FIG. 3, 1R and 1L are side chassis, 4B and 4C are stock trays, 5 is a disk drive unit, 13 is a main chassis, 14 is a pickup chassis, 21 is a step cam holder, and 22 is a step cam.

On the main chassis 13, upright side chassis 1R, 1L are fixed in parallel with each other.

The three stock trays 4A, 4B and 4C for mounting and storing disks have the same shape, but the stock tray 4A is hidden in FIG. The stock tray will be described using the stock tray 4C as a representative.

The stock tray 4C is a side chassis 1R.
Side has two projections 4Ca, 4Cb,
Ca, 4Cb is a long groove 1 provided in the side chassis 1R.
It is slidably supported by Rd. Similarly, the stock tray 4C has two projections (not shown) on the side chassis 1L side, and the two projections are slidably supported by long grooves 1Ld provided in the side chassis 1L. With such a support structure, the stock tray 4C can move the side chassis 1
R and 1L can be moved in the long groove 1Rd and long groove 1Ld directions. This is the same for the other two stock trays 4A and 4B.

However, the three pairs of long grooves located at the upper, middle, and lower positions are not parallel to any pair, and as shown in FIG. 3, the mutual gap is narrow at the near side and wide at the far side. ing. More precisely, the long grooves 1Rc and 1Rd are
Rb is provided at a position rotated and moved by an equal angle on the side chassis 1R around the shaft 1Ra planted on the side chassis 1R. This is the same on the side chassis 1L with the shaft 1La as the center.

The side chassis 1R includes three leaf springs 43.
A, 43B and 43C are fixed, and by catching the projections 4Ab, 4Bb and 4Cb of the stock trays 4A, 4B and 4C, respectively, the stock trays 4A, 4B and 4C are captured.
Can be held at the rear ends of the respective moving ranges (in FIG. 3, the stock trays 4A, 4
C projections 4Ab and 4Cb are captured by leaf springs 43A and 43C).

However, when the disk loading mechanism described later forcibly moves the stock trays 4A, 4B, 4C, the leaf springs 43A, 43B, 43C elastically bend and open the stock trays 4A, 4B, 4C. . Conversely, also when the disc loading mechanism moves the stock trays 4A, 4B, 4C from the near side to the rear end of the movement range, the leaf springs 43A, 43B, 43C elastically bend and the stock trays 4A, 4B. , 4C.

Further, a triple hook 44 is provided on the side chassis 1R so as to be rotatable within the limit of the protrusion 1Re and urged by a coil spring 45, and the protrusion 4Aa of the stock trays 4A, 4B, 4C is provided. , 4Ba, and 4Ca, the stock trays 4A, 4B, and 4C
Can be held at the front end of each moving range (in FIG. 3, the projection 4Ba of the stock tray 4B is caught by the triple hook 44).

However, when the disk loading mechanism described later forcibly moves the stock trays 4A, 4B, 4C, the coil spring 45 elastically expands to open the stock trays 4A, 4B, 4C. Conversely, the disc loading mechanism is the stock tray 4A,
Also when the 4B and 4C are moved from the rear end of the movement range to the front side, the coil spring 45 elastically expands to capture the stock trays 4A, 4B and 4C.

The shafts 1Ra, 1La which are respectively erected on the side chassis 1R, 1L and penetrate through the side chassis 1R, 1L respectively are coaxial, and the shafts 1Ra, 1La are coaxial.
The disk drive unit 5 is fixed to a pickup chassis 14 rotatably supported by the shafts 1Ra, 1La inside the R, 1L. The disk drive unit 5 has a turntable 5a on which a disk is mounted and rotated.

Below the pickup chassis 14, on the main chassis 13, a pickup elevating mechanism as generally described below is provided. The worm wheel 17 rotates via the worm 16 by the driving force of the motor 15, and the worm wheel 17 is provided with a cam groove 17 a to catch the projection 18 b of the arm 18. One end of the arm 18 is rotatably held by the main chassis 13 at a fulcrum 18a, so that the arm 18 rotates according to the cam groove 17a as the worm wheel 17 rotates. At the other end of the arm 18, a rod 20 is rotatably provided via a hinge 19, and the other end of the rod 20 is rotatably connected to the pickup chassis 14. , The pickup chassis 14 is the shaft 1R
a, 1La is pivotally moved up and down.

As described above, the shafts 1Ra and 1La form the pivots of the sub-chassis 7 outside the side chassis 1R and 1L, and also serve as the rotation axes of the pinions 12R and 12L. Here, a sub-chassis rotation mechanism that restricts the rotation of the sub-chassis 7 and selectively determines three types of postures will be described with reference to FIG.

The step cam holder 21 is fixed on the main chassis 13 outside the side chassis 1L and parallel to the side chassis 1L. Step cam holder 21
Has two linear long grooves 21a and 21b, and the long grooves 21a are provided at two projections 22b and 2 of the step cam 22.
2c is slidably supported, and the long groove 21b is
By supporting the second protrusion 22d slidably, the step cam 22 can be moved in parallel with the step cam holder 21 and horizontally.

The step cam 22 has a cam groove 22a,
The cam groove 22a is composed of three horizontal areas having different heights, and two inclined areas connecting the horizontal areas smoothly. When the projection 7h (FIG. 2) provided on the sub-chassis 7 is guided by the cam groove 22a, the sub-chassis 7 rotates with the movement of the step cam 22, and the projection 7h
When h is in any one of the three horizontal regions of the cam groove 22a, the sub chassis 7 stably obtains a predetermined inclined posture.

The step cam 22 has a horizontal rack 22f at its lower end, and the driving force of a motor 23 fixed to the step cam holder 21 is transmitted to the rack 22f via a worm 24, a worm wheel 25, and a pinion 26. Thus, the step cam 22 moves.

The shutter 22e provided at the upper end of the step cam 22 is provided with three photo sensors 2 fixed to the step cam holder 21 as the step cam 22 moves.
The optical axes of 3A, 23B, and 23C are sequentially blocked. The positions of the three photo sensors 23A, 23B, and 23C are respectively determined by the protrusions 7h provided on the sub chassis 7 and the cam grooves 22a.
Are set so that the optical axis is shielded by the shutter 22e when there are three horizontal areas. Therefore, the three types of tilt postures of the sub chassis 7 are determined based on which of the three photo sensors is blocked.

Next, the disk loading mechanism will be described with reference to FIG. The driving force of the motor 30 fixed inside the side chassis 1R is transmitted via a pulley 31 and a belt 32 fixed to the motor shaft to a pulley 33a supported on the outside of the side chassis 1R while being decelerated. The gear 33b integral with the pulley 33a is transmitted to the gear 34a pivotally supported by the gear holder 42 and the gear 34b integral therewith while being further reduced. The gear 34b meshes with the cam gear 35 and the cam gear 36 which are supported by the gear holder 42 at the same time. The gear holder 42 is fixed to the main chassis 13 in parallel with the side chassis 1R.

The driving force of the cam gear 35 is transmitted at an increased speed to a gear 27b projecting from the side chassis 1R via a small cam gear 37 supported by a gear holder 42.
The gear 27a, which is integral with the sub-chassis 7b, is transmitted to the pinion 12R (FIG. 2) that shares a shaft with the rotation fulcrum of the sub-chassis 7 to drive the rack 2e of the drawer 2. The gears 27b and 27a are integrally connected to a gear 28 (FIG. 3) outside the side chassis 1L by a synchronous shaft 29, and the gear 28 shares the shaft with the rotation fulcrum of the sub-chassis 7. Since the rack 2f of the drawer 2 is driven via 12L (FIG. 2), the right and left movement amounts of the drawer 2 match exactly.

On the other hand, the driving force of the cam gear 36 is transmitted to the small cam gear 38 and the gear 39 supported by the gear holder 42 at an increased speed, and the projections 40b, 4 are formed in the long groove 42a of the gear holder 42.
0c is guided, and the rack 40 slidable in parallel with the side chassis 1R is driven. The rack 40 includes the sub chassis 1
A vertical rib 40a perpendicular to R is integrally provided.

Here, as shown in FIG. 2, the sub-chassis 7 supports the slider 10 slidably in the long groove direction by the long groove 7e, and the slider 10 has two protrusions 10a,
10b. With the projections 10a and 10b sandwiching the vertical ribs 40a of the rack 40, the slider 10 moves in accordance with the movement of the rack 40 and in accordance with the inclination posture of the sub-chassis 7. The slider 10 has two small rib-shaped projections 10c and 10d inside the sub chassis 7. The slider 10 is associated with a stock tray as follows.

First, the slider 10 is located at the deep end of the long groove 7e of the sub chassis 7, and the three stock trays 4A, 4
B, 4C are long grooves 1Rb, 1Rc, 1 of the side chassis 1R.
When the sub-chassis 7 is rotated to change the inclination angle at the rear end of Rd, the projection 10c of the two projections of the slider 10 becomes the projection 4A of each of the three stock trays.
a, 4Ba, 4Ca, and pass through the
d passes through the rear side. Also, the inclination angle of the sub chassis 7 is 1
When the inclination angle of one of the stock trays is equal to the projection angle of the stock tray (4Aa or 4Ba or 4Ca),
The slider 10 is sandwiched between two protrusions 10c and 10d.

Next, the slider 10 is located at the front end of the long groove 7e of the sub-chassis 7, and the three stock trays 4A, 4
Either B or 4C is a long groove 1R of the side chassis 1R
b, 1Rc, 1Rd, when the sub-chassis 7 is rotated to change the inclination angle, the projection 10c of the two projections of the slider 10 becomes the projection (4Aa or 4Ba or 4Ba or 4Ba or 4Ba) of the stock tray located at the front end. 4Ca), and the projection 10d passes through the rear side at the same time. When the inclination angle of the sub-chassis 7 is equal to the inclination angle of the stock tray, the projection (4Aa or 4B
a or 4Ca) are two projections 10 of the slider 10
c, 10d.

The vertical rib 40a of the rack 40 and the slider 1
0 and the inclination of the sub-chassis 7 is 1 due to the above relationship between the stock tray protrusion 4Aa or 4Ba or 4Ca.
When the inclination angle of one of the stock trays is equal to that of the other, the stock tray is moved along with the movement of the rack 40.
The stock tray moves the entire stroke of the long groove of the side chassis by the driving force of the cam gear 36.

Next, the relationship between the cam gear 35 and the small cam gear 37 for driving the drawer 2 and the cam gear 36 and the small cam gear 38 for driving the stock tray will be described.

First, from the state in which the drawer 2 has completely protruded from the sub-chassis 7, the state in which the drawer 2 has reached the far end of the sub-chassis 7, and the stock tray located at the front end of the side chassis 1R, 1L is further moved to the rear end. The speed ratio of the series of gears is set so that the cam gear 35 and the cam gear 36 always rotate during the operation process until the storage is completed, and the entire operation process is completed within one rotation.

The cam gear 35 has an outer peripheral cam shape 35b.
And a small tooth width is provided in a specific angle range of the gear portion 35a so as not to mesh with the gear portion 37a of the small cam gear 37, and the small cam gear 37 also has the outer peripheral cam shape 37b, as described above. By engaging both, the cam gear 35
Is rotating in a certain angle range, the small cam gear 3
7 is provided so as not to rotate.

Similarly, the cam gear 36 has an outer peripheral cam shape 36.
b, and provided with a small tooth width in a specific angular range of the gear portion 36a so as not to mesh with the gear portion 38a of the small cam gear 38. The small cam gear 38 also has an outer peripheral cam shape 38b, as described above. The two gears mesh with each other,
A relationship is established in which the small cam gear 38 does not rotate when the rotation is within a certain angle range.

Under such a configuration, by appropriately setting the rotation and stop timings of the small cam gear 37 and the small cam gear 38, the period during which only the drawer 2 moves,
A period during which neither the drawer 2 nor the stock tray moves and a period during which only the stock tray moves are caused to occur unpredictably. In addition, the cam gear 3
5 and 36 continue rotating, the cam gear 36 is provided with the shutter 36c, and the gear holder 42 is provided with three photosensors 41A, 41B and 41C, whereby three states, that is, the drawer 2 has completely protruded from the sub-chassis 7. It is possible to distinguish between a state where the drawer 2 is completely stored and one stock tray is protruding to the front ends of the side chassis 1R and 1L and both are not moved, and a state where the stock tray is completely stored at the rear end. It is.

The structure has been described above, and the disk transfer operation between the drawer 2 and the stock tray will now be described with reference to FIGS.

FIGS. 5 to 8 show a case where a standard diameter disc is used. FIG. 5 shows that the pinion 12R rotates in the direction of arrow a after the user mounts the disc in the apparatus, and the rack 2
e, that is, the drawer 2 is being driven in the direction of arrow b. The main tray 3 is located at the upper end of the inclined grooves 2a and 2b of the drawer 2 by the bias of the coil spring 11 (FIG. 2). The sub chassis 7 changes the inclination angle, and the inclination angle of the sub chassis 7 is changed to the long grooves 1Rb, 1R of the side chassis 1R.
The slider supported by the subchassis 7 by matching the inclination angle of one of the stock trays 4 (one of the stock trays 4A, 4B, 4C (FIG. 3)) located at the front end of Rc, 1Rd (FIG. 3). Ten small rib-shaped protrusions 10c, 1
0d sandwiches the projection 4a of the stock tray 4. At this time, the position of the disk 6 indicated by the one-dot chain line is defined by the arc-shaped steps 3e of the main tray 3 and the projections 3f and 3g. The hatched portion of the main tray 3 represents the disk mounting surface.

FIG. 6 shows a state in which the drawer 2 is transported in the direction of the arrow b, the projection 3a of the main tray 3 is in contact with the inner part of the notch 7i of the sub-chassis 7, and the projection 2h of the drawer 2 is It does not reach the far end of the long groove 7c of the sub chassis 7. At this time, the main tray 3 is parallel to one stock tray 4 which is caught by the slider 10 and located at the front end of the long groove of the side chassis 1R, and the disk mounting surface of the main tray 3 is higher than the stock tray 4. . Therefore,
At this point, the movement of the main tray 3 includes the disc 6
Does not interfere with the stock tray 4. At this time, the shapes of the main tray 3 and the stock tray 4 do not overlap in the axial direction of the disk 6.

FIG. 7 shows that the drawer 2 is further transported in the direction of arrow b so that the projection 2h of the drawer 2
c, and the protrusion 3a of the main tray 3 is brought into contact with the notch 7i of the sub-chassis 7 while the drawer 2
Has reached the lower end of the inclined groove 2a according to the inclined groove 2a. At this time, the main tray 3 is lowered in the axial direction of the disk as compared with the case of FIG. 6, and the disk mounting surface of the main tray 3 is the disk mounting surface of the stock tray 4 (FIG. 7).
, The disk 6 is placed on the stock tray 4.

FIG. 8 shows a state where the stock tray 4 has been transferred to the deep end of the long groove of the side chassis 1R by driving the slider 10 in the direction of the arrow c. The disc 6 is placed on the stock tray 4, and the stock tray 4
Are defined by the arc-shaped steps 4f, 4g, 4h. Thus, the process from mounting the standard diameter disc to storage is completed.

FIGS. 9 to 12 show a case where a small-diameter disk is used. Except for the disc mounting surface, the operation itself is the same as that of the standard diameter disc described above.

FIG. 9 shows a state where the pinion 12R rotates in the direction of arrow a after the user mounts the disk in the apparatus, and drives the rack 2e, that is, the drawer 2, in the direction of arrow b. At this time, the position of the small-diameter disk 6s is defined by the arc-shaped steps 3h and 3i of the main tray. The hatched portion of the main tray 3 represents the disk mounting surface.

FIG. 10 shows a state in which the drawer 2 has been transferred in the direction of the arrow b, and the projection 3a of the main tray 3 has come into contact with the notch 7i of the sub-chassis 7. At this time, the disk mounting surface of the main tray 3 is higher than projections 4i and 4j (FIG. 12) of the stock tray 4 described later. Therefore, in the movement of the main tray 3 at this point, the disc 6s does not interfere with the stock tray 4.

FIG. 11 shows that the drawer 2 is further transferred in the direction of arrow b, and the projection 3a of the main tray 3 is
While reaching the lower end of the inclined groove 2a of the drawer 2 while being in contact with the inner part of the notch 7i. The main tray 3 is lowered in the axial direction of the disk as compared with the case of FIG. 10, and the disk mounting surface of the main tray 3 is the disk mounting surface of the stock tray 4 (in FIG.
The disk 6 s is placed on the stock tray 4.

FIG. 12 shows a state where the stock tray 4 has been transferred to the deep end of the long groove of the side chassis 1R by driving the slider 10 in the direction of the arrow c. The disk 6s is placed on the stock tray 4, and its position is defined by the arc-shaped step 4k of the stock tray 4 and the projections 4i and 4j. Thus, the process from mounting of the small-diameter disc to storage is completed.

Next, the entire operation of this embodiment, that is, mounting, storing, reproducing, changing, and taking out a disk will be described with reference to FIGS.

FIG. 13 shows the side chassis 1R (or 1R).
L), the drawer 2 protrudes, and the user has just placed the disk 6A on the main tray 3.

With the drawer 2 protruding in this manner,
At least one of the three stock trays has no disc mounted thereon, and one of the stock trays having no disc mounted thereon protrudes toward the drawer 2.
In FIG. 13, the stock tray 4B has the disc 6B mounted thereon, and the stock tray 4C has the disc 6C mounted thereon and is located at the back of the apparatus, that is, the disc 6B and the disc 6C are stocked. On the other hand, the stock tray 4A has no disc mounted thereon and protrudes toward the drawer 2, and a control circuit (not shown) stores that the stock tray 4A is in a standby state.

In this embodiment, at this time, of the three horizontal areas of the cam groove 22a of the step cam 22 (FIG. 3),
The middle horizontal area supports the sub chassis 7, and the photo sensor 23B is shielded by the shutter 22e.

At this time, the disk drive unit 5 is in a state of being lowered with the shafts 1Ra and 1La as fulcrums, and the turntable 5a is below the disk mounting surface of the stock tray 4A.

The three photo sensors 4 shown in FIG.
41A of 1A, 41B, and 41C is shielded by the shutter 36c, and a control circuit (not shown) detects that the drawer 2 is in the protruding state.

Here, the user points the drawer 2 to the arrow b (FIG. 1).
4), the cam gear 35 in FIG. 4 rotates counterclockwise through the above-described series of gear trains, and the shutter 36
When c moves, the shielding of the photo sensor 41A is released, and a control circuit (not shown) activates the motor 30 of FIG.
The drawer 2 is driven in the direction of arrow b (FIG. 14).

As shown in FIG. 14, the drawer 2
While moving in the direction, it is inclined as shown by the arrow d in the middle.
This tilting operation is performed by the step cam 2 as shown in FIG.
2 are driven by a motor 23 and the sub-chassis 7 is produced by changing the attitude. The control circuit (not shown) stores that the stock tray 4A is in the standby state, so that the inclination angle of the sub chassis 7 matches the inclination angle of the stock tray 4A, that is, the cam groove 22a of the step cam 22. The step cam 22 is moved to a state in which the lower horizontal area of the three horizontal areas supports the sub-chassis 7, that is, a state in which the photo sensor 23A is shielded by the shutter 22e.

FIG. 15 shows a state where the drawer 2 is further driven in the direction of arrow e after the above-described tilting operation is completed, and the main tray 3 is overlaid on the stock tray 4A. This is the state of FIG. 6 or FIG.

FIG. 16 shows a state where the drawer 2 is further driven in the direction of arrow e, and the main tray 3 is lowered below the stock tray 4A. This corresponds to FIG. 7 or FIG.
In this state, the disc 6A is placed on the stock tray 4A.

At this time, as the drawer 2 moves in the direction of the arrow e, the clamp holder 8 described with reference to FIG. 2 descends, and the disc clamper 9 approaches the disc 6A.

In the above process from FIG. 13 to FIG.
In the small cam gear 37 shown in FIG. 4, the cam gear 35 and the gear portion continue to mesh with each other and rotate continuously. On the other hand, the small cam gear 38
Are facing the narrow range of the tooth width of the cam gear 36 so that the gear portions do not mesh with each other, and the outer peripheral cam 3 of the cam gear 36
6b and the outer cam 38b of the small cam gear 38
8, the small cam gear 38 does not rotate at all.

In FIG. 16, when the main tray 3 has finished descending below the stock tray 4A, that is, as shown in FIG. 7, the protrusion 2h of the drawer 2 reaches the deep end of the long groove 7c of the sub-chassis 7. Then, the narrow range of the tooth width of the cam gear 35 reaches the small cam gear 37, and at the same time, the outer peripheral cam 35b of the cam gear 35 and the outer peripheral cam 37b of the small cam gear 37 suppress the rotation of the small cam gear 37. The small cam gear 37 does not rotate. Also, the small cam gear 38
Is still facing the narrow range of the tooth width of the cam gear 36, and the outer cam 36b of the cam gear 36 and the outer cam 38b of the small cam gear 38 prevent the rotation of the small cam gear 38. Does not rotate. That is, here, a state is created in which neither the small cam gear 37 nor the small cam gear 38 rotates. When entering this state, the shutter 36c in FIG. 4 shields the photosensor 41B, and a control circuit (not shown) recognizes that the disc is at a position where reproduction is possible.

At this time, if the user has previously commanded reproduction of the disk 6A, a control circuit (not shown) stops driving the motor 30 and raises the disk drive unit 5 to reproduce the disk 6A.

FIG. 17 shows a state where the disk drive unit 5 has been raised as described above, and the turntable 5a has caught the disk 6A and lifted it from the stock tray 4A. At this time, the disk 6A is stably held by being sandwiched between the disk clamper 9 (FIG. 2) and the turntable 5a.

The lifting operation of the disk drive unit 5 is performed by rotating the pickup chassis 14 by driving the motor 15 as described with reference to FIG. When the pickup chassis 14 is rotated upward, the protrusions 14a provided on the pickup chassis 14 become holes in the stock tray (holes 4Be and 4Ce (FIG. 3) for the stock trays 4B and 4C, and the stock tray 4A is not shown). And comes into contact with the top surface of the sub-chassis 7. A sudden increase in the load on the motor 15 caused by this contact is electrically detected, and a control circuit (not shown) stops driving the motor 15.

FIG. 18 shows that when the user gives a command to stop the reproduction of the disk 6A, the disk drive unit 5 descends and the stock tray 4A
A shows a state in which A is placed and moved to the far end of the long groove 1Rb of the side chassis 1R, that is, a state in which the storage of the disk 6A is completed.

Here, the lowering of the disk drive unit 5 is performed by rotating the motor 15 in the direction opposite to the direction in which the disk drive unit 5 is raised.
Is stopped because the shutter 18c provided on the arm 18 in FIG. 3 shields the photo sensor 20 and the control circuit (not shown) detects this.

The driving of the stock tray 4A is performed as shown in FIG.
, The motor 30 drives a series of gear trains, and the cam gear 3
6 rotates counterclockwise similarly to FIG. 16, so that a wide range of the tooth width of the cam gear 36 meshes with the small cam gear 38, and the outer cam 36b of the cam gear 36 becomes the outer cam of the small cam gear 38. 38b is no longer restrained and the small cam gear 38 starts to rotate. Further, when the shutter 36c shields the photo sensor 41C, a control circuit (not shown) detects the completion of the storage of the disk and stops the motor 30. During this time, the small cam gear 37 does not continue to rotate.

FIGS. 19 to 21 show the operation when the user instructs the reproduction of the disk 6C stored in the stock tray 4C, that is, the change operation of the disk.

In FIG. 19, a control circuit (not shown) drives the step cam 22 shown in FIG. 3 to make the inclination angle of the sub chassis 7 (FIG. 2, etc.) equal to the inclination angle of the stock tray 4C, and the shutter 22e is turned on. The photo sensor 23C is shielded.

In FIG. 20, a control circuit (not shown) rotates the motor 30 of FIG. 4 in the opposite direction to that of FIGS. 13 to 16, and moves the stock tray 4C in the direction of arrow k. As in the case of FIG. 16, the control circuit (not shown) detects that the small cam gear 37 and the small cam gear 38 have not rotated due to the blocking of the photosensor 41B, and stops driving. At this time, the stock tray 4C
Overlaps the main tray 3.

FIG. 21 shows that, as in the case of FIG. 17, the disk drive unit 5 is raised and the turntable 5a is turned on.
However, the disk 6C has been caught and lifted from the stock tray 4C. The operation of raising and stopping the disk drive unit 5 is as described with reference to FIG.

FIG. 22 shows the operation when the user takes out the disk 6C, and follows the reverse of the above-mentioned operations from FIG. 13 to FIG. That is, the disk drive unit 5 is lowered, and the drawer 2 is driven in the direction of arrow n, whereby the main tray 3 is raised in the disk axial direction,
While receiving the disk 6C from the stock tray 4C and further driving the drawer 2 in the direction of arrow n, the subchassis 7 rotates in the direction of arrow o to reach a horizontal position, and the drawer 2 further drives in the direction of arrow p. By doing so, Figure 1
The drawer 2 protrudes in the same manner as
C can be taken out.

[0077]

As described above, according to the present invention, the drawer is selectively inclined at the same number of stages as the number of disks to be stored, and the drawer and the stock tray exchange disks in the inclined state. In addition, a plurality of stock trays each containing a disc are stacked and arranged radially when viewed from the side, and the discs drawn out according to the inclination of each radiation together with the stock trays are reproduced while being tilted. It is configured to be. Therefore, the entire disk storage unit can be a mechanism that does not move up and down, and a mechanism with a small vertical dimension can be realized, which greatly contributes to downsizing of the apparatus.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the general outline of a disk reproducing apparatus according to one embodiment of the present invention.

FIG. 2 is an exploded perspective view mainly showing a drawer and a sub chassis in FIG.

FIG. 3 is an exploded perspective view mainly showing a sub-chassis rotating mechanism and a disk drive unit elevating mechanism in FIG.

FIG. 4 is an exploded perspective view mainly showing a disc loading mechanism in FIG. 1;

FIG. 5 is an operation explanatory view showing an operation of transferring a standard-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 6 is an operation explanatory view showing an operation of transferring a standard-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 7 is an operation explanatory view showing an operation of transferring a standard-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 8 is an operation explanatory view showing an operation of transferring a standard-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 9 is an operation explanatory view showing a transfer operation of a small-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 10 is an operation explanatory diagram showing an operation of transferring a small-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 11 is an operation explanatory view showing a transfer operation of a small-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 12 is an operation explanatory diagram showing an operation of transferring a small-diameter disc by a main tray and a stock tray in one embodiment of the present invention.

FIG. 13 is an operation explanatory view showing the disk operation operation viewed from the side in one embodiment of the present invention.

FIG. 14 is an operation explanatory diagram showing a disk operation operation viewed from the side in one embodiment of the present invention.

FIG. 15 is an operation explanatory view showing a disk operation operation viewed from the side according to the embodiment of the present invention;

FIG. 16 is an operation explanatory diagram showing a disk operation operation viewed from the side in one embodiment of the present invention.

FIG. 17 is an operation explanatory diagram showing a disk operation operation viewed from the side in one embodiment of the present invention.

FIG. 18 is an operation explanatory view showing a disk operation operation viewed from the side in one embodiment of the present invention.

FIG. 19 is an operation explanatory view showing a disk operation operation viewed from the side according to the embodiment of the present invention;

FIG. 20 is an operation explanatory diagram showing a disk operation operation viewed from the side in one embodiment of the present invention.

FIG. 21 is an operation explanatory diagram showing a disk operation operation viewed from the side in one embodiment of the present invention.

FIG. 22 is an operation explanatory diagram showing a disk operation operation viewed from the side according to the embodiment of the present invention.

FIG. 23 is an operation explanatory view showing a disk operation operation of a disk device according to the related art when viewed from the side.

FIG. 24 is an operation explanatory view showing a disk operation operation of a disk device according to the related art when viewed from the side.

FIG. 25 is an operation explanatory diagram showing a disk operation operation of a disk device according to the related art when viewed from the side.

[Explanation of symbols]

 1R, 1L Side chassis 2 Drawer 3 Main tray 4, 4A, 4B, 4C Stock tray 5 Disk drive unit 6, 6s, 6A, 6B, 6C Disk 7 Sub chassis 10 Slider 12R, 12L Pinion 13 Main chassis 14 Pickup chassis 22 Step cam 27a , 28 Synchronous gear 40 Rack 42 Gear holder

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-117164 (JP, A) JP-A-6-84545 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 17/26

Claims (4)

(57) [Claims] 1. A drawer having a disk mounting member, wherein the drawer has a first position for mounting or removing a disk outside the disk reproducing device, and a second position inside the disk reproducing device. The drawer or at least the disk mounting member of the drawer is capable of selectively taking a plurality of angles of inclination at the second position. A disk reproducing means is provided substantially in the axial direction of the disk at the second position, and a plurality of disks are placed inside the disk reproducing device adjacent to the second position. A stock portion that can be stored in a layered manner in the thickness direction and radially as viewed from the side, and when the drawer is placed in the second position with a disc mounted thereon, the drawer is moved from the drawer to the stock portion; The disk is moved at an inclination angle equal to the inclination angle of the disk mounting member of the drawer. On the other hand, when the drawer is in the second position without mounting the disk, the disk mounting member of the drawer is tilted. A disc reproducing device comprising: a disc moving means for moving a disc from the stock section to the drawer at an inclination angle equal to the angle. 2. The disk reproducing means according to claim 1, wherein said disk reproducing means is capable of selectively tilting the disk mounting member of the drawer at a tilt angle equal to a plurality of types of tilt angles taken at the second position. A disc reproducing apparatus for reproducing a disc located at the second position or a position between the second position and the stock section while the disc is inclined. 3. The disk moving means according to claim 1, wherein, as the disk moving means, the stock unit has a plurality of trays on which disks can be loaded one by one, and the interval between the stocked disks is the second position. Each tray is arranged so that all the disks are substantially radial when viewed from the side, and each tray is arranged in the plane direction of the disk to be mounted, and the stock portion and the above-mentioned portion are narrower on the side closer to, and wider on the far side. A disc reproducing apparatus wherein a disc can be placed and moved between the second position and the second position. 4. The disk according to claim 3, wherein when the disk mounting portion of the drawer and the tray are at the second position with the same inclination angle, they overlap each other in the axial direction of the disk. Between the state where the disk mounting surface of the drawer is higher than the disk mounting surface of the tray and the state where the disk mounting surface of the drawer is lower than the disk mounting surface of the tray. Wherein the drawer or at least the tray and the tray relatively move in the substantially axial direction of the disk so that the drawer and the tray exchange a disk. apparatus.