KR100194331B1 - Optical disc loading device - Google Patents

Abstract

The present invention relates to an optical disc loading apparatus, which provides an optical disc loading apparatus capable of directly loading a disc without a disc tray, thereby simplifying the structure of the disc loading apparatus and significantly reducing the size of the product. For the purpose of automatically loading all the optical disks of various sizes in the correct position in one device, the disk 21 is rotated downward by rotating the clamp 21 of the disk chucking arm 3 without the disk tray. An optical disc loading apparatus for seating and detecting and reproducing a signal recorded on a disc by an optical pickup 13, comprising: a base 1 on which the optical pickup 13 and a turntable 20 are mounted; The base cover (2) is seated on the upper end of the 1, the one side of the disk chucking arm (3) is hinged up and down to one side of the upper end, and the base (1) and Loading and unloading means which is installed in the middle of the base cover (2) to close the disk to the base cover (2) to transfer or withdraw after reproducing on the turntable 20, and the disc is entered by the loading and unloading means The chucking arm pivoting means for rotating the disk chucking arm 3 upwardly and downwardly in accordance with the chucking or withdrawing, and a position for conveying the disk to the loading and unloading means and the disk conveyingly linked to the chucking arm pivoting means. A position shifting means for alternately positioning the non-positioning position, and first and second guiding means for guiding the disk to the correct position on the turntable 20 when various sizes of disks are loaded by the loading and unloading means. It provides an optical disk loading apparatus comprising a.

Description

Optical disc loading device

1 is an exploded perspective view of the present invention.

2 is a perspective view of the combination of the present invention.

3 is a side view of the present invention.

4 is a plan view of the present invention.

5 is a side view showing a state where a disk is loaded on a turntable.

6 is a plan view showing a state in which a disk having a larger size is entered under the guidance of guide means.

FIG. 7 shows a state in which a disc having a smaller size enters with guidance of a guiding means.

(a) is a state in which the disk is biased to the right.

(b) is a state in which the disk is shifted to the left.

* Explanation of symbols for main parts of the drawings

1 Base 2 Base Cover

2a: Hinge Shaft 2b: Blank

3: disc chucking arm 3a: chucking arm protrusion

3c: stopper 4: control panel

4a, 4b: connecting groove 4c: locking hole

4d: Jam Jaw 4e: Long Hole

5,6: disc guide 5a, 6a, 9a: hinge pin

5b, 6b: Pressing plate 5c, 6c: Guide rib

5d, 6d: slope 7,8: disc lever

7a, 8a: hinge hole 7b, 8b: lever shaft

7c, 8c: axis of motion 7d, 8d: axis of connection

9: roller frame 9b: protrusion

9c: blanking plate 10,11: tension spring

13: optical pickup 14,15: gear train

16: disc roller 17: slider

17a: Cam Curve 17b: Rack Gear

17c: slope 18,19: motor

20 turntable 21 clamp

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc loading apparatus, and in particular, to load an optical disc without a disc tray accommodating the optical disc, thereby simplifying the structure of the disc loading apparatus, reducing the size of the product, and accurately loading various sizes of optical discs. It relates to a loading device.

As is well known, the conventional optical disc loading apparatus has been configured to load or withdraw a disc by storing the optical disc in a disc tray and then opening and closing the disc by driving the disc tray.

The research on the optical disc loading device that has been conducted until recently is mainly focused on one-touch operation of the disc tray to make it convenient for the user, and smoothing the operation to prevent mechanical failure and to highlight the image of high quality. It has been studied, and since such a device is essentially equipped with a disc tray, there is only a slight difference in the method of driving the disc tray.

In addition, research into the optical disk itself has been actively conducted, and more compact optical disks have already been developed, and optical disks of various sizes ranging from large to small are currently used.

However, in the related art, as compared with the optical disc, which is more compact as described above, the size of the hardware for accommodating and reproducing it is not remarkably reduced. In particular, as long as a disc tray is provided, not only the disc tray itself but also its driving means must be provided. Therefore, there was a limit to reducing the volume of the loading device, and one disc tray can only store optical discs that fit the size. The need for a device involved the lack of compatibility.

The present invention has been made to solve the problems of the prior art, an object of the present invention is to provide an optical disk loading device that can directly load a disk, without a disk tray to simplify the structure of the disk loading device and products It is to be able to significantly reduce the size of.

It is still another object of the present invention to load optical discs of various sizes in one device, and also to automatically load in the correct position.

The optical disk loading apparatus of the present invention for achieving the above object rotates the clamp of the disk chucking arm downward without seating the disk chuck and mounts the disk on the turntable, and detects and reproduces a signal recorded on the disk by optical pickup. An optical disc loading apparatus, comprising: an optical pickup and a turntable mounted on a base, and a base cover hinged on an optical pickup mounted on the base, wherein the base and the base cover are loaded and unloaded to transfer a disc without a disc tray; By installing the means, the chucking arm rotating means and the positioning means, the disc roller of the loading and unloading means transfers the disk to the turntable side while bringing the disk in close contact with the lower end of the base cover, when the disk is left as it is without a separate disc tray, When the disc enters the turntable, the chucking arm pivot means the chucking arm To rotate and at the same time interlocking the two kingam pivoting means, the positioning means, while leaving the disk roller cover from the base characterized in that one to the chucking the disc on the turntable to clamp the chuck kingam.

The apparatus further includes first and second guiding means for automatically guiding the disc to the correct position on the turntable when the disc is transferred to the optical pickup side via the disc roller, regardless of the size of the disc. It is done.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the optical disk loading apparatus according to the present invention.

1 is an exploded perspective view of the present invention, FIG. 2 is a combined perspective view of the present invention, FIG. 3 is a side view of the present invention, and FIG. 4 is a plan view of the present invention.

As shown, the disc 21 of the disc chucking arm 3 is pivoted downward to seat the disc on the turntable 20, and the optical disc loading to detect and reproduce the signal recorded on the disc by the optical pickup 13 In the apparatus, the present invention mainly consists of the base 1, the base cover 2, the loading and unloading means, the chucking arm rotating means, the position moving means.

In addition, the apparatus comprises first and second guide means for guiding the disc to the correct position of the turntable 20.

In more detail, the base 1 and the base cover 2 form a case of a so-called optical disk loading apparatus, and the base 1 is mounted with the optical pickup 13 and the turntable 20, and the base cover ( 2) the disc chucking arm 3 is rotatably hinged to the hinge shaft 3b on one side of the upper end thereof and is seated on the base 1.

The loading and unloading means transfers the disk to the turntable 20 and the optical pickup 13 or withdraws the disk from the turntable 20 after playback, and is installed between the base 1 and the base cover 2. .

Such loading and unloading means may install a roller frame 9 between the base 1 and the base cover 2, and rotate the disc roller 16 for feeding the disc to one end of the roller frame 9. Hinge, and rotates the disc roller 16 in both directions by roller driving means.

At this time, the disk roller 16 is preferably formed of a synthetic resin material having a soft surface and friction, the disk roller 16 is to transport the disk while in close contact with the bottom of the base cover (2).

As the roller driving means for driving the disc roller 16 as described above, the motor 18 is fixed to one side of the roller frame 9, and the motor 18 and one side of the roller frame 9 are fixed. It is achieved by installing a gear train 15 for connecting the disk roller 16 at a predetermined rotation ratio.

That is, a gear is formed on the rotational shaft of the motor 18, and a series of gear devices that have a predetermined reduction ratio are engaged with the gear, and one side of the disc roller 16 is engaged with a driven gear of the gear device. It is made up.

On the other hand, the front of the roller frame 9 is formed with an upwardly extending shielding plate (9c), which blocks the space generated between the base 1 and the base cover (2) after the disk is loaded once After loading, it prevents another disc from entering and also prevents the ingress of dust and other foreign matter during playback.

The chucking arm pivoting means rotates the disk chucking arm 3 up and down in a timely manner as the disk roller 16 moves in and out of the disk, that is, the disk is moved. A plate-shaped slider 17 having a cam curve 17a having a chucking arm protrusion 3a protrudingly formed on one side of the base 1 and a chucking arm protrusion 3a slidably inserted into one side of the base 1. To install, a slider drive for horizontally moving the slider 17 forward and backward on one side of the base 1 is installed, the cam curve of the slider 17 when the slider 17 is moved back and forth by the slider drive. 17a moves the chucking arm projections 3a up and down so that the chucking arms 3 rotate up and down about the hinge axis 3b.

Here, the slider driving unit has a configuration similar to that of the roller driving means, and a bidirectional rotatable motor 19 on one side of the base 1 and a gear train engaged with the motor 19 to rotate at a predetermined rotation ratio ( 14), a rack gear 17b is formed at the lower end of the slider 17 to be engaged with the last tooth of the gear train 14, and the slider is rotated according to the rotation of the motor 19 and the gear train 14. It is comprised so that 17 may be moved horizontally before and after.

On the other hand, the position movement means is interlocked with the chucking arm (3) so that the roller frame 9 is rotated in time according to the rotation of the chucking arm (3) the disk roller 16 to convey the disk The two sides of the roller frame 9 to be alternately positioned to a position where it can be brought into close contact with the base cover 2 and a position where the disk cannot be conveyed, that is, a position which is separated from the base cover 2. Rotating hinge is hinged to the upper end of the base (1) through a hinge pin (9a), connecting the lower front middle portion of the roller frame 9 and the front one side of the base (1) by a tension spring (11), Protruding portions 9b are formed on the side surfaces of the roller frame 9, and downward slopes 17c corresponding to the protrusions 9b are formed on the front of the slider 17. 17) retracts and is spaced apart from the projection 9b. The roller frame 9 is rotated upward by the elastic force of the tension spring 11 so that the disc roller 16 is in close contact with the lower surface of the base cover 2, and the slider 17 is moved forward when the disc is unloaded. As a result, the inclined surface 17c of the slider 17 pushes the protrusion 9b of the roller frame 9 so that the disc roller 16 is separated from the lower surface of the base cover 2.

In the first and second guiding means, the disk is loaded in the optical disk loading apparatus as described above, and guides all disks of various sizes to the correct positions on the turntable 20. In the present embodiment, the first guiding means It is provided on the front entrance side to guide the large disk, and the second guide means is installed adjacent to the turntable 20 to guide the small disk.

That is, it is to be able to accurately guide all the disk coming in between the operating range of the first and second guide means, the first guide means are two hinge shafts (2a) protruding on both upper ends of the disk cover (2) And two disc levers 7 and 8 rotatably inserted into the respective hinge holes 7 a and 8 a to guide the disc therebetween, and the two disc levers 7 and 8. ) To restore the position before the disc levers 7 and 8 are opened by connecting the plate-shaped control panel 4 and the one side of the control panel 4 connected to the upper end of the base cover 2. It is composed of a tension spring (10) that provides a resilience force, but when the entering disk pushes only one disc lever (7, 8) of the disc levers (7, 8) on both sides, the disc on the other side that does not contact the disc It is impossible to rotate the scrubbers 7 and 8 by restraining a predetermined part of the control panel 4. And restrains the control panel 4 so that the disc levers 7 and 8 rotate only when the disc pushes and rotates the disc levers 7 and 8 on both sides simultaneously. 8) must be guided to the center of the configuration to allow its entry.

That is, as shown in the figure, the disc levers 7 and 8 are formed in a plate shape of approximately 'A', and the lever shafts 7b and 8b protruded downward corresponding to each of the disc levers 7 and 8, and The operation shafts 7c and 8c protruding upwardly and the connection shafts 7d and 8d, and the connection grooves 4a and 4b into which the connection shafts 7d and 8d are inserted into the control panel 4, and the operation. A locking hole 4c into which the shaft 8c is inserted, a locking jaw 4d in close contact with the operation shaft 7c of one side, and two long holes into which the two hinge shafts 2a are slidably inserted. 4e), and when the disc pushes only one side of the lever shafts 7b and 8b, as the control panel 4 moves, the locking hole 4c is on the operating shaft 8c, and the locking jaw 4d is on the operating shaft. This is achieved by preventing the disc levers 7 and 8 from being rotated in correspondence with 7c in each case.

In the figure, reference numeral 2c denotes a long hole formed in the base cover 2 so that the lever shafts 7b and 8b of the disc levers 7 and 8 are inserted and rotated.

The second guide means forms a pair of blanks 2b on both sides of the base cover 2, and a pair of disk guides whose rear ends are hinged rotatably by hinge pins 5a and 6a on the blanks 2b. (5, 6), but at the lower end of the disk guide (5,6) to reduce the width from the front to the rear to guide the disk center to form guide ribs (5c, 6c) facing each other, The inclined surfaces 5d and 6d are formed at the front lower end of the guide ribs 5c and 6c. When the width of the disc is larger than the width formed by the two guide ribs 5c and 6c, the disc is the guide ribs 5c and 6c. Is entered below the inclined surfaces 5d and 6d, and the disc is guided into the guide ribs 5c and 6c when the disc is narrow in width.

In addition, stoppers 3c are formed at both lower ends of rear ends of the disc chucking arms 3 so that the centers of the discs that enter the guides of the disc levers 7 and 8 and the disc guides 5 and 6 are turnedtable 20. Stop at the center of the) and prevent further entry.

Preferably, the disc guides 5 and 6 are pivoted upward during playback so as not to interfere with the rotation of the disc, which is the pressing plate in contact with one side of the disc chucking arm 3 at the rear end of the disc guides 5 and 6. (5b, 6b) so that the disk chucking arm (3) rotates downward when the pressing plates (5b, 6b) are pressed, so that the disk guides (5, 6) are centered around the hinge pins (5a, 6a). Allow upward rotation.

The operation of the optical disk loading apparatus of the present invention made as described above will be described.

First, a state in which a large-size disk D, which can be called a normal size, is loaded with reference to the accompanying drawings, FIG. 3, FIG. 5, and FIG. 6. First, the disk D of the optical disk loading apparatus. As shown in FIG. 3, the inclined surface 17c of the slider 17 is spaced apart from the protrusion 9b of the roller frame 9, and the roller frame 9 is tensioned by the tension spring 11 as shown in FIG. 3. The disc roller 16 is brought into close contact with the base cover 2 by rotating upward about the hinge pin 9a, and the disc chucking arm 3 has its chucking arm protrusion 3a according to the retracted state of the slider 17. As shown in FIG. ) And the disk guides 5 and 6 are spaced apart from the disk chucking arm 3 to maintain the downwardly rotated state indicated by a dotted line in the drawing.

This state is the initial state before loading to the disc D, and when the disc D enters in this state, the side of the disc D is shown as shown in FIG. The lever shafts 7b and 8b of 8 are to be pushed in, and in this case, if only the lever shaft 7b of one side of the disc D is in contact, the disc lever 7 is opened in the direction of the hinge pin 2a. While turning, the operating shaft 7c attempts to move the lever connecting groove 4a of the control panel 4 to the left in the drawing. However, the disc levers 7 and 8 are restrained because the locking holes 4c on the opposite side of the control panel 4 restrain the control panel 4 to prevent further movement by being caught by the operation shaft 8c of the other disc lever 8. It is not possible to open the disk D is impossible to open. At this time, when the disk D is further pushed in, the disk D is naturally guided to the center by the lever shaft 7b so that the other side of the disk D also contacts the lever shaft 8b.

When the disc D pushes the two lever shafts 7b and 8b at the same time, the disc levers 7 and 8 rotate at the same time so that the connecting shafts 7d and 8d move the lever connecting grooves 4a, 4b) is pushed to the left at the same time, and at the same time, the operation shafts 7c and 8c of the disc levers 7 and 8 are naturally released from the engaging jaw 4d and the engaging hole 4c of the control panel 4, It is possible to enter D).

Contrary to the above, when the disc D pushes the lever shaft 8b of the disc lever 8 first, the control shaft 4 pushes the connecting shaft 8d of the disc lever 8 to the left in the drawing. Accordingly, the side locking jaw 4d of the control panel 4 is caught by the operation shaft 7c of the opposite lever shaft 7 and cannot move, and the above-described operation is repeatedly performed to guide the disk D. do.

Of course, at this time, the tension spring (10) pulls the control panel (4) to the right and the disc lever (7,8) always acts the same elastic force to narrow inwards, so the center of the disc (D) has two lever shafts ( It is automatically guided to coincide with the centerline of 7b and 8b, ie to fit the center of the turntable 20.

6 is only a state in which the disc D enters the second guide means through the disc levers 7 and 8, and thus the first guide means of the desk levers 7 and 8 is shown. A detailed understanding of the guiding operation will be made clear with reference to the description of FIG. 7 described later.

To continue the description, as the disk D passes through the lever shafts 7 and 8 as described above, the disk D is attached to the base cover 2 as shown in FIGS. 3 and 6. The disk roller 16 is moved in the direction of the optical pickup 13 and the turntable 20 by the rotation of the disk roller 16 driven by the motor 18 and the gear train 15 engaged with the motor 18, where the disk D is the disk guide. Since the inclined surfaces 5d and 6d of the guide ribs 5c and 6c of (5 and 6) are in contact with each other, the disk D continues to be transported while pushing the disk guides 5 and 6, and then the stopper of the disc chucking arm 3 3c) can no longer be transported.

At this time, the rotation of the motor 18 is stopped, and at the same time, another motor 19 is driven to drive the series of gears 14 engaged with the motor 19 to be engaged with the last gear of the gear train 14. The rack gear 17b of the slider 17 is moved forward.

At this time, since the chucking arm protrusion 3a of the disc chucking arm 3 is inserted into the cam curve 17a of the slider 17, the protruding inclined surface 17c is formed in front of the slider 17. , The inclined surface 17c of the slider 17 moving forward pushes the protrusion 9b of the roller frame 9, and as the roller frame 9 is rotated downward, the disk D roller 16 is the disk D ) Is getting closer and closer to the state.

Accordingly, the disk D falls in the direction of the turntable 20 due to the weight of the disk D, wherein the chucking arm protrusion 3a of the disk chucking arm 3 is driven by the cam curve 17a of the slider 17. By lowering and rotating the disk chucking arm 3 downward about the hinge axis 3b, the clamp 21 of the disk chucking arm 3 is simultaneously mounted on the upper surface of the disk D dropped by its own weight. As shown in FIG. 5, the disk D is safely seated on the turntable 20.

At this time, the stopper (3c) of the disk chucking arm (3) is rotated together when the chucking arm (3) is rotated downward about the hinge axis (3b) is separated from the disk (D), the disk chucking arm (3) One side of the disk guide (5, 6) to press the pressing plate (5b, 6b), accordingly the disk guide (5, 6) is rotated up around the hinge pins (5a, 6a) to be separated from the disk (D) It does not interfere with the rotation of the disc D during playback.

In addition, the shielding plate (9c) extending in front of the roller frame 9 serves to prevent the entry of foreign matter and another disk (D).

Up to now, the state in which the large disk D is loaded has been described. However, the disk d having a small size differs in circumstances. This is because the disk d having a small size may not be accurately seated on the turntable 20 unless it is inserted into a predetermined position at the first insertion. Thus, the present invention has a structure in which the disk d is automatically guided to the correct position even when the disk d is not inserted at a predetermined position during initial insertion.

7 is a view illustrating a state in which a smaller disk d is entered under the guidance of the second guide means. When the disk d is inserted in a direction in which it is first inserted, the disk lever ( 7,8 comes into contact with the lever shafts 7b and 8b first. The role of these levers 7 and 8 is such that when the disk D is not contacted at the same time as in the case of the entry of the large disk D described above, the levers 7 and 8 cannot be operated. If only contact is to be inserted of the disk (d).

That is, as shown in FIG. 7A of the accompanying drawings, when the disc d is inserted into the lever shaft 8b of the disc lever 8, the disc lever 8 has a hinge 2a and a hinge hole. The operating shaft 8c attempts to move the control panel 4 in the direction of the arrow by pushing the locking hole 4c of the control panel 4 while attempting to turn in the direction of the arrow about 8a. Then, as in the case where the above-mentioned large disk D is inserted, the locking jaw 4d formed on the opposite side is caught by the operating shaft 7c of the disk lever 7 to stop further movement. ) Is guided between the two lever shafts (7b, 8b) is made, the entry is made by the disc roller 16 to meet the disc guides (5, 6) while being moved to the turntable (20) position.

At this time, the disk (d) is again corrected in position according to the guide of the guide ribs (5c, 6c) opposite to each other, the width of the disk guide (5, 6) is reduced from the front to the rear toward the lower end of the turntable (20) You will be automatically guided to the correct location.

FIG. 7B shows a state in which the disc d is inserted to the left and is inserted, even when the disc d is inserted to the other disc lever 7 side. Likewise, the engaging hole 4c of the control panel 4 is caught by the operating shaft 8c of the disc lever 8 on the opposite side, and then guided to the center so that the disc d meets the disc guides 5 and 6 and guides it automatically. Will be performed.

When the disk d is positioned accurately on the turntable 20 in this manner, a series of operations as described in the above-described loading of the disk D are repeatedly performed, so that the clamp 21 of the disk chucking arm 3 is closed. The disc d is mounted on the turntable 20 to be played.

In this way, when the playback of the discs D and d is completed, the above-described operation is performed in the reverse order to eject the disc.

That is, the motor 19 is driven in the opposite direction to drive the gear train 15, and as a result, the slider 17 moves backward to rotate the disc chucking arm 3 upward to release the disc clamping state, and at the same time the roller frame. (9) rotates upward, the motor 18, the gear train 14 and the disc roller 16 is driven in the opposite direction, the disc roller 16 drives the disc (D, d) to the base cover (2) The discs D and d are taken out while being in close contact.

As described above, the optical disc loading apparatus according to the present invention can directly load a disc without a disc tray, thereby simplifying the structure of the disc loading apparatus and significantly reducing the size of the product. It is an advantage that can be loaded by accurately guiding all without regard to size and size.

Claims (13)

Without the disc tray, the optical disc loading for rotating the clamp 21 of the disc chucking arm 3 to seat the disc on the turntable 20 and detecting and reproducing the signal recorded on the disc by the optical pickup 13 In the apparatus, a base 1 on which the optical pickup 13 and the turntable 20 are mounted, and is mounted on an upper end of the base 1, and one side of the disc chucking arm 3 is located on one upper end thereof. A base cover (2) which is pivotably lowered, and loading and unloading means installed between the base (1) and the base cover (2) to transfer the disc to the turntable (20) or to withdraw it after regeneration; The chucking arm pivoting means for rotating the disk chucking arm 3 up and down as the disk is entered or withdrawn by the loading and unloading means, and the loading and unloading means interlocked in correspondence with the chucking arm pivoting means. Transport the disc The optical disc loading apparatus being configured to position moving means for alternately located in a position where it does not transfer the position and the disc. The disk according to claim 1, wherein the loading and unloading means is rotatably hinged to a roller frame 9 interposed between the base 1 and the base cover 2, and to one end of the roller frame 9; And a roller driving means for rotating the disc roller (16) in both directions. The method of claim 1, wherein the roller driving means is connected to the bidirectional rotatable motor 18 is fixed to one side of the roller frame 9, and the motor 18 and the disk roller 16 at a predetermined rotation ratio Optical disk loading device, characterized in that consisting of a gear train (15) rotatably installed on one side of the roller frame (9). 2. The optical disc loading apparatus according to claim 1, further comprising a shielding plate (9c) extending upward to prevent entry of foreign matter and another disc after loading the disc in front of the roller frame (9). The chucking arm pivoting means includes a chucking arm protrusion 3a formed at one side of the chucking arm 3 and a cam curve 17a into which the chucking arm protrusion 3a is slidably inserted. A slider having a plate-shaped slider 17 installed on one side of the base 1 and a slider driver mounted on one side of the base 1 to horizontally move the slider 17 forward and backward, The slider 17 moves back and forth by the slider 17, and the cam curve 17a moves the chucking arm protrusion 3a up and down to rotate the upper and lower chucking arms 3 up and down. Optical disc loading device. The method of claim 5, wherein the slider drive unit is a bidirectional rotatable motor (19) fixed to one side of the base 1, gear tooth (14) is meshed with the motor 19 to rotate at a predetermined rotation ratio, And a rack gear (17b) formed at a lower end of the slider (17) and engaged with the last tooth of the gear train (14). The front lower end of the roller frame (9) according to claim 1 or 5, wherein both sides of the roller (9) are rotatably hinged to each other by a hinge pin (9a) on an upper end of the base (1). The intermediate portion and one front side of the base 1 are connected to each other by a tension spring 11, and a protrusion 9b is formed to protrude from the side of the roller frame 9, and the protrusion portion is formed at the front of the slider 17. The downwardly inclined surface 17c corresponding to 9b) is formed, and the roller frame 9 is rotated upward by the elastic force of the tension spring 11 when the disc is loaded so that the disc roller 16 faces the bottom surface of the base cover 2. In the disc unloading, the inclined surface 17c of the slider 17 pushes the protrusion 9b of the roller frame 9 as the slider 17 moves forward. Optical disc loading field, characterized in that separated from the lower surface of the cover (2) Chi. The method of claim 1, characterized in that it comprises first and second guiding means for guiding the disc to the correct position on the turntable 20 when discs of various sizes are loaded by the loading and unloading means. Optical disc loading device. The method of claim 8, wherein the first guide means comprises two hinge shafts (2a) protruding on both sides of the disc cover (2), the hinge shaft (2a) in each of the hinge holes (7a, 8a) Two disc levers 7 and 8 rotatably inserted to guide the disc therebetween, a plate-shaped control panel 4 connected to the two disc levers 7 and 8 and interlocked therewith, and the control panel ( 4) is made of a tension spring (10) which connects one side of the disk cover (2) with the top of the disk cover (7,8) to provide a resilient force to restore to a position before the opening of the disk cover (7), When only one of the disc levers 7 and 8 on both sides is pushed, the disc levers 7 and 8 on the other side, which are not in contact with the disc, are rotated by restraining a predetermined portion of the control panel 4. Disabled and controlled only when the discs push and rotate the disc levers 7 and 8 on both sides simultaneously. The optical disc loading apparatus, characterized in that the restraint is released so that the disc lever (7, 8) (4) pivoting. 10. The disc levers 7 and 8 are formed in a substantially letter-shaped plate, and the disc levers 7 and 8 have lever shafts 7b and 8b projected downward corresponding to each other, and upwardly projecting. The operating shafts 7c and 8c and the connecting shafts 7d and 8d, and the control shaft 4 has connecting grooves 4a and 4b into which the connecting shafts 7d and 8d are inserted. A locking hole 4c into which 8c is inserted, a locking jaw 4d in close contact with the operation shaft 7c of one side, and two long holes 4e into which the two hinge shafts 2a are slidably inserted. When the disc is pushed on only one side of the lever shafts 7b and 8b, as the control panel 4 moves, the locking hole 4c is on the operating shaft 8c, and the locking jaw 4d is on the operating shaft 7c. ) And the disc levers 7 and 8 are not rotated in correspondence with the respective cases. The pair of disk guides (5) according to claim 8, wherein the second guide means (2) has a rear end pivotably hinged by hinge pins (5a, 6a) to blanks (2b) formed on both sides of the base cover (2). 6), and guide ribs 5c and 6c opposed to each other are formed at the lower ends of the disc guides 5 and 6 so as to decrease in width from the front to the rear to guide the discs. The inclined surfaces 5d and 6d are formed at the front lower end of 6c. When the width of the disc is larger than the width formed by the two guide ribs 5c and 6c, the disc is inclined 5d of the malleable guide ribs 5c and 6c. 6d), and when the width of the disc is narrow, the disc is guided to the inside of the guide ribs (5c, 6c). 12. The disk chucking arm (3) according to claim 11, wherein the rear ends of the disk guides (5, 6) are provided with pressing plates (5b, 6b) in contact with one side of the disk chucking arm (3). And pressing the pressing plates (5b, 6b) so that the disk guides (5,6) are rotated upward with respect to the hinge pins (5a). The method of claim 1, wherein the stopper (3c) protruding to form a lower end of the rear end of the disk chucking arm (3) to stop when the center of the loaded disk is located in the center of the turntable 20, further entry Optical disk loading device, characterized in that to prevent.