JP2689936B2 - Disc loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc player, and more particularly, to a disc loading device for a device that pulls out all optical discs from a cartridge for use.

[0002]

2. Description of the Related Art Conventionally, in an apparatus having optical heads on both sides of an optical disk, the upper optical head is allowed to escape upward during disk loading in order to pass a cartridge case or a disk tray between the upper and lower optical heads. A method of returning to a fixed position after loading was adopted.

[0003]

In the case of an optical disc apparatus in which the optical heads are arranged on both sides of the disc as described above, it is conceivable to fix the optical heads to improve the accuracy. When fixed, no proposal has been made in the past as to how to load an optical disc.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an optical disk apparatus in which the optical heads are accessed from both sides of the optical disk, the optical disk being loaded between the upper and lower optical heads while the optical head is fixed. Especially.

[0005]

In order to solve the above-mentioned problems, in the present invention, a cartridge for accommodating a sub-tray for supporting the peripheral portion of an optical disk so that the sub-tray can be taken in and out,
A cartridge guide mechanism for guiding the insertion of the cartridge, a disc transport mechanism for pulling out the sub-tray from the cartridge and moving it to above the turntable, an elevating means for raising and lowering the turntable, and a holding mechanism for holding the optical disc on the turntable. According to the above, a disk loading device was constructed.

[0006]

The disk transport mechanism pulls out the sub-tray on which the optical disk is placed from the cartridge, and then the lifting means raises the turntable, and the holding means holds the optical disk on the turntable. As a result, the optical disk can be loaded without retracting the optical head disk.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an entire disc loading apparatus according to an embodiment of the present invention, and FIGS. 2A and 2B are a plan view and a side view showing a disc carrying mechanism according to an embodiment of the present invention, respectively. 3 shows the drive mechanism of the disc transport mechanism. 4 (a), (b), (c), (d), and (e) show the operating states of the slide pins of the disc transport mechanism. FIG. 5 shows the operation of the slide plate of the cartridge guide mechanism of one embodiment of the present invention, and FIG. 6 (a), (b), (c),
(D) shows the operating states of the lock arm and the carriage arm. FIG. 7 shows an embodiment of a cartridge used in the disk loading device of the embodiment of the present invention.
(A) is a perspective view and (b) is a rear view. FIG. 8 shows its internal view. 9A, 9B, and 9C show the operation of the lock mechanism of the sub-tray in the cartridge. FIG.
FIG. 11 is a side view of a disc chucking mechanism (holding mechanism), and FIG. 11 shows a drive mechanism of the disc chucking mechanism. FIG. 12 shows a state in which the top base 81, which is closed during normal performance, is opened around a fulcrum 84 in an embodiment of an optical disk drive unit and a recording / reproducing system that employs the disk loading device of the present invention. It is a perspective view.

As shown in FIG. 1, the disc loading apparatus of the present invention, a cartridge 5, a cartridge guide mechanism 4 for guiding the insertion of the cartridge 5, and a sub-tray from the cartridge 5 is moved to a position above a turntable. The disk transport mechanism 1 is provided.

As shown in FIG. 7, the cartridge 5 comprises a case 12, a sub-tray 13 and an optical disk 10. The sub-tray 13 has four disk supports 20.
Case 1 with the optical disk 10 placed on (FIG. 8)
It is stored in 2. The sub-tray 13 is shown in FIG.
As shown in (a), the lock arms 14 are provided on both sides of the tip, and the left and right lock arms 14 are pressed against the lock grooves 15 in the case 12 so that the lock arms 14 cannot be pulled out in a normal state without being released. It has become.

Further, at both ends on the back side of the case 12, as shown in FIG.
As shown in (b), lock holes 19 are formed at two places, and by inserting a pin 38 (FIG. 6) from the lower side, it is used for fixing the cartridge 5 in the apparatus. This will be described later.

A pull-out hole 17 is provided at the left and right ends of the sub-tray 13 (FIG. 7), and a carriage access window 18 is provided around the pull-out hole 17 on the upper surface of the case 12.

The cartridge guide mechanism 4 attached to the inside of the disc transport mechanism 1 has a mechanism for supporting and fixing the inserted cartridge 5 as described later.

As shown in FIG. 2, in the disc transport mechanism 1, the carriage arm 74 for pulling out the sub-tray 13 and the optical disc 10 is located inside the guide plate 50, and the left and right are connected by a carriage guard 75 having a thickness thinner than that of the sub-tray 13. Has been done. Two slide pins 71 for forward and backward movement are fixed to each of the left and right sides of the carriage arm 74 by caulking each two left and right sides. Further, one carriage pin 70 for inserting the sub-tray 13 into the pull-out hole 17 of the sub-tray 13 and pulling out the sub-tray 13 from the case 12 is caulked and fixed to each of the left and right.

The left and right guide plates 50 are the rear bars 5
2, fixed by the underbar 53.

As shown in FIG. 2B, three rack grooves 202 are formed in the guide plate 50, while rollers (not shown) are attached to the rack 51 to form each groove 2.
02, the rack 50 is guided by the rack groove 202 and is movable in the length direction of the guide plate 50. The slide pin 71 includes a guide roller 72 and a rack roller 7.
3 engages with the second rack groove 202 and the cam groove 201 formed in the guide plate 50 and the rack 51, respectively. The slide pin 71 rolls in the second slide groove 200 cut in the guide plate 50 while being pushed by the cam groove 201 cut in the rack 51, thereby moving vertically and horizontally according to the shape of the cam groove 201. . The slide pin 201, the cam groove 201, and the slide groove 200 are provided in two sets in order to have strength.

Next, the actual loading operation will be described with reference to the drawings. When the cartridge 5 shown in FIG. 7 is horizontally inserted into the cartridge insertion opening 6 shown in FIG. 1, the tip of the cartridge 5 contacts the slide plate 30 of the cartridge guide mechanism 4 as shown in FIG. Slide plate 3
0 moves horizontally on two slide shafts 31 which are caulked and fixed to the cartridge guide mechanism 4, and is pulled by a spring 32 in a direction to push out the cartridge 5.
When the cartridge 5 is pushed in as it is and the cartridge 5 reaches the cartridge loading completion position, the cartridge 5 hits the stopper 33 and stops.

At this time, a part of the slide plate 30 blocks the slit portion of the cartridge loading sensor 34 which is an opposed type optical sensor to detect that the cartridge 5 is completely inserted.

Normally, as shown in FIG. 9A, the sub tray 13 is
Is locked and cannot be pulled out,
When the lock release arm 42 of the cartridge guide mechanism 4 is inserted into the lock release hole 16 of the cartridge 5 by inserting the cartridge 5 as shown in FIG. 9B, the lock of the cartridge 5 is released, and FIG. As described above, the sub-tray 13 can be pulled out. FIG. 9B
State is a cartridge loading completion state.

In FIG. 5, when the cartridge loading sensor 34 operates and the disc transport mechanism 1 described below operates at the same time and holds the cartridge 5 as it is, the disc loading motor 62 operates and the rack 51 moves in the loading direction. .

As shown in FIG. 6A, the cartridge lock arm 38 rotates about a lock arm shaft 40 caulked and fixed to the cartridge guide mechanism 4, and a spring 39
Is pushed in the arrow direction (FIG. 6B), and the link 35 receives the force and is pushed in the arrow direction (FIG. 6B).

With the movement of the rack 51 (the rack 51
The drive mechanism of the rack 35 will be described later), and the arm drive roller 41 at the tip of the link 35 rolls on the upper surface of the rack 51,
When 1 moves to the state of FIG. 6B, the link 35 rotates around the link shaft 37, and the cartridge lock arm 38 is pushed by the spring 39 and rotates through the link 36. At the same time, the tip of the cartridge lock arm 38 is the spring 3
9 is inserted into the lock hole 19 on the back side of the case 12 (FIG. 6 (c)). When the rack 51 moves to this state, the cartridge 5 is fixed, and the cartridge 5 does not return to the front even if the hand is released.

The disc transport mechanism 1 is in the disc unloading state when the cartridge loading is completed, and the shutter 76 shown in FIG. 2B shuts off the slit portion of the disc unloading sensor 68 which is an opposed optical sensor. There is. Upon completion of cartridge loading, the cartridge loading sensor 34 (FIG. 5)
And the disc loading motor 62
Rotates in the loading direction.

As shown in FIG. 3, the rotation of the disc loading motor 62 is transmitted in the order of the pulley 64, the belt 63, the worm pulley 65, the worm wheel 57, the front pulley 56, and the loading belt 66.
It is converted into the horizontal movement of the rack 51 shown in (b).

The front pulley shaft 54 transmits the rack 51 on the facing surface to the loading belt 66 from the front pulley 56 on the facing surface. The loading belt 66 and the rack 51 are fixed by a belt member 67. The loading belt 66 is pulled by the rear pulley 58 on the side opposite to the front pulley 56.

FIG. 4 shows the rack groove 20 of the guide plate 50.
2 and the cam groove 201 of the rack 51 and the positional relationship during loading of the slide pins 71 crimped on both ends of the carriage arm 74 are shown. The movement will be described below with reference to this figure and FIG.

FIG. 4A shows the unloading state of the disc, whereby the cam groove 201 moves in the direction of the arrow. When the unloading overrun portion 208 passes through the first vertical portion 205 of the slide groove 200, the slide pin 71 is pushed by the first sloped portion 209, and the slide pin 71 is pushed.
Start descending as in (b).

As a result, the carriage arm 74 connected to the slide pin 71 descends as shown in FIG. 6C, and the left and right carriage pins 70 are inserted into the pull-out holes 17 of the sub-tray 13. In this state, the carriage guard 75 is at the same height as the sub-tray 13 and does not interfere with the upper and lower optical heads 83 even if it is moved horizontally.

In this state, when the disk loading motor 62 further rotates and the rack 51 moves at the same time,
The slide pin 71 horizontally moves on the horizontal portion 207 as shown in FIG. 4C while being pushed by the second slope 210 of FIG.
At the same time, as shown in FIG. 6D, the carriage arm 74
Moves horizontally in the direction of the spindle motor 85 (see FIG. 2) of the mechanical deck 3.

At this time, the optical disc 10 has the sub tray 13
At the same time, it is pulled out from the case 12.

When the slide pin 71 reaches the end point of the horizontal portion 207, the slide pin 71 is pushed up by the second slope 210 along the second vertical portion 206 as shown in FIG. At the position where the slide pin 71 reaches the loading overrun portion 211 as shown in (e), the shutter 77 (FIG. 2B) shuts off the slit of the disc loading sensor 69 which is an optical sensor of the opposite type, and the disc loading sensor. 69 works to stop the loading motor 61.

From this state, the spindle motor 85 is raised for disk chucking. As shown in FIG. 11, the power of the disk chucking motor 100 is the motor pulley 101, the belt 102, and the worm pulley 10.
3, the worm wheel 104 is converted into a horizontal movement through the cam gear 105, the cam groove 204, the elevating arm 110 (rotating around the shaft 7), the cam slide arm 119, and the cam slide arm pin 123, and FIG.
By horizontally moving the under cam 118 shown in FIG.
An upward force is applied to the elevating pin 120 press-fitted on the side surface of the fifteenth side to raise the elevating plate 115. On the elevating plate 115, the spindle base 114 having the spindle motor 85 attached is regulated in the horizontal direction by the guide shaft 113, the spring 116 is sandwiched therebetween, and the spring 116 is contracted by the side hook 117. It is kept.

Elevating plate 115 and spindle base 114
Is the under base 1 fixed to the base plate 80.
The guide shaft 113 press-fitted into the shaft 12 restricts it in the horizontal direction. When the elevating plate 115 rises, it is transmitted to the spindle base 114 through the spring 116, and the spindle base 114 also rises.

During the ascent, the upper surface of the spindle base 114 abuts the lower surface of the under base 112. The subsequent rise of the elevating plate 115 is absorbed by the bending of the spring 116. The bending amount of the spring 116 serves as a force for fixing the spindle motor 85.

When the spindle motor 85 is completely lifted, the sensor shutter 109 attached to the cam gear 105 blocks the slit portion of the spindle up sensor 106, which is an opposed optical sensor attached to the sensor base 108 shown in FIG. Then the spindle up sensor 10
6 works to stop the disk chucking motor 100.

When the ascent of the spindle motor 85 is completed, the optical disk 10 is chucked by the spindle magnet 86 to the disk hub 11 made of a magnetic material and adhered to the optical disk 10, and the turntable 11 is turned on.
In the state of being fixed on the disk 1, the disk tray 82 is slightly lifted (FIG. 10). The position of the disk 10 at this time is determined by the disk hub 11 entering the spindle shaft 122.

In this state, the disk loading is completed, and the optical disk 10 is chucked on the turntable 111 by the spindle magnet 86.

A spindle down sensor 107 is also attached to the sensor base 108 of FIG. 11 and is used for unloading. Further, for the disc unloading of the optical disc 10 for which recording / reproduction is completed, the above-described reverse operation may be performed as it is.

[0038]

As described above, according to the present invention,
By providing the mechanism for horizontally pulling out the optical disk from the cartridge case, it is possible to obtain an effect that the disk can be loaded between the fixed upper and lower heads that cannot pass through the cartridge case and the disk tray.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a disc loading device of the present invention.

2A and 2B show a disk transport mechanism in one embodiment of the present invention, FIG. 2A being a plan view and FIG. 2B being a side view.

FIG. 3 shows a drive mechanism of a disc transport mechanism.

FIG. 4 is a side view showing the operating states of slide pins of the disc transport mechanism in the order of (a), (b), (c), (d), and (e).

FIG. 5 shows an operation of the slide plate in the cartridge guide mechanism of the embodiment of the present invention.

FIG. 6 is a side view showing, in the order of (a), (b), (c), and (d), the operation status of the lock arm in the cartridge guide mechanism and the operation status of the carriage arm in the disk transport mechanism.

7A and 7B show an embodiment of a cartridge according to an embodiment of the present invention, FIG. 7A is a perspective view with a sub-tray pulled out, and FIG. 7B is a back view.

FIG. 8 shows the internal structure of the cartridge.

FIG. 9 shows a lock mechanism of a sub-tray in a cartridge, (a) shows details of the lock mechanism, (b) shows an unlocked state, and (c) shows a state in which the sub-tray is pulled out.

FIG. 10 is a side view showing a disk chucking mechanism in one embodiment of the present invention, including a partial cross section.

FIG. 11 shows a drive mechanism of a disc chucking mechanism.

FIG. 12 shows an example of an optical disk drive unit and a recording / reproducing mechanism of a mechanical deck adopting an embodiment of the present invention,
FIG. 6 is a perspective view showing a state in which a top base supporting the upper optical head is opened.

[Explanation of symbols]

 1 Disc Transport Mechanism 4 Cartridge Guide Mechanism 5 Cartridge 10 Optical Disc 11 Disc Hub 13 Sub Tray 86 Spindle Magnet 111 Turnable

Claims (3)

(57) [Claims] 1. A cartridge in which a sub-tray supporting a peripheral portion of a disk is removably housed, a cartridge guide mechanism for guiding the insertion of the cartridge into the apparatus, and the sub-tray is pulled out from the cartridge to extract a turntable. In the disc loading device, which is equipped with a disc transport mechanism for moving the disc up, a lifting unit for raising and lowering the turntable, and a holding mechanism for holding the optical disc on the turntable , a hole is formed in the sub-tray. And the disc transport mechanism engages with the hole to form the sub tray.
A disk loading device having a pin for pulling out a . 2. The holes are formed on the left and right end portions of the sub-tray.
The disc loading device according to claim 1, wherein two discs are formed . 3. A cartridge for accommodating a sub-tray supporting a peripheral portion of a disk so that the sub-tray can be taken in and out, a cartridge guide mechanism for guiding the insertion of the cartridge into the apparatus, and a sub-tray drawn out from the cartridge to extract a turntable. a disk transfer mechanism for moving to the upper, and elevating means for raising and lowering the turntable, the disk loading apparatus characterized by comprising a holding mechanism for holding the optical disc on the turntable, the left and right front end of the sub-tray Two holes are formed in the portion, and the disc transport mechanism engages with each of the holes to cause the sub-mount.
An arm provided with a pin for drawing out the ray, a guide plate having a groove for vertically moving and horizontally moving the arm, a rack for moving the arm vertically and horizontally in cooperation with the guide plate, and the rack The disc loading device according to claim 1, further comprising a mechanism for horizontally moving the disc.