KR19980058928A - Loading and unloading device and method of minidisc player - Google Patents

Abstract

The present invention relates to a mini-disc player, comprising a loading motor unit mounted on a tray 2 and a power source, and a mini-disc within the tray 2 receiving power from the loading motor unit mounted on the tray 2. A first disc transfer unit for transferring MD), a lever motor unit mounted on the tray 2 and a power source, and a mini mounted on the tray 2 by receiving power from the lever motor unit mounted on the tray 2. The second disc transfer unit for loading the disc (MD) into the storage end (3), and the mini disc (MD) mounted on the tray (2) and received by the power of the lever motor unit seated on the storage end (3) tray By providing a loading and unloading device of a mini disc player composed of a third disc transfer unit which is unloaded by (2), it is possible to load and unload the mini disc with two power sources, thereby assembling process time and circle. The cost is reduced, and the loading and unloading is possible without using the roller made of rubber, so even after a long time of use, the mini disc can be loaded and unloaded smoothly, improving the reliability of the product and improving the life of the product. It has a prolonged effect.

Description

Loading and unloading device and method of minidisc player

The present invention relates to a minidisc player, and more particularly, to a loading and unloading apparatus and method of a minidisc player for facilitating exchange of a minidisc between a tray and a storage stage and between a tray and a disc holder.

In general, a mini disc player plays a role of reproducing data stored in a mini disc, an optical recording medium. The mini disc player includes a tray on which a mini disc inserted externally is seated, and a mini disc positioned behind the tray and seated on the tray. And a pickup unit for loading, storing and storing the pickup unit, and a pickup unit positioned at the bottom of the tray to play the mini disc.

In addition, the loading and unloading device of the mini-disc player moves the mini-disc inserted from the outside into the tray or loads the tray from the tray to the housing, and moves the mini-disc seated in the housing into the tray or unloading from the tray. It is responsible for the loading function, it consists of a plurality of loading roller portion mounted in the tray, and a plurality of pinch roller portion for transporting the mini-disc mounted on each storage end to the tray.

That is, the loading and unloading of the mini-disc was possible by driving the plurality of loading roller parts mounted in the tray and the plurality of pinch roller parts mounted in each storage end by the loading motor.

However, the loading roller portion and the pinch roller portion includes a rubber roller, and the roller has a problem in that the elastic force is lost as the use time passes and smooth loading and unloading cannot be performed.

In addition, the roller has a problem that the reliability of loading and unloading of the mini-disc is lost by providing sliding friction without providing friction to the mini-disc when a lubricant such as oil or cream necessary for driving the gear is attached.

Therefore, the present invention has been made to solve the problems described above, the configuration is simplified can reduce the assembly process time and cost, it is possible to load and unload the mini disk without using a roller product An object of the present invention is to provide an apparatus and method for loading and unloading a mini-disc player, which improves the reliability thereof.

1 is a plan view showing a typical mini-disc player,

2 is a plan view showing a loading and unloading device of a mini-disc player according to the present invention;

3 is a plan view showing an operating state of the first disc transfer unit according to the present invention;

3A is a view illustrating a state in which a mini-disc is forcibly inserted from the outside;

3b is a view showing a state in which the holder structure holds the loading groove of the mini-disc;

3c is a view showing a state in which the mini-disc is completely seated in the tray,

3d is a view showing a state in which the holder structure is completely spaced from the mini-disc;

4 is a plan view showing an operating state of the second disc transfer unit according to the present invention;

5 is a plan view showing an operating state of the third disk transfer unit according to the present invention;

6 to 8 are flowcharts illustrating a loading and unloading method of the mini disc player according to the present invention.

Explanation of symbols for the main parts of the drawings

1: chassis 2: tray

3: storage stage 4: playing stage

11: loading motor 12: worm gear

13: Medium gear 14: Rocker

15: stopper 16: first rack plate

17: Home Cam 18

19: first driving pin 20: first position sensor

21: 11th sensing hole 22: 12th sensing hole

23: 13th sensing hole 24: lever motor

25: Worm Gear 26: Medium Gear

27: loading lever 28: second rack plate

29: Г-type cam groove 30: second drive pin

31: second position sensor 32: 21st sensing hole

33: 22nd sensing hole 34: 23rd sensing hole

35: take out lever 36: b type cam groove

37: third driving pin

An apparatus for loading and unloading a mini-disc player according to the present invention for achieving the above object is a loading motor unit mounted on a tray and being a power source, and receiving power from the loading motor unit mounted on the tray. A first disc transfer unit for transferring a mini disc in the tray, a lever motor unit mounted on the tray and a power source, and a mini disc mounted on the tray receiving power from the lever motor unit to load the mini disc mounted on the tray into the storage end; And a second disc transfer unit mounted on the tray and a third disc transfer unit mounted on the tray to receive the power of the lever motor unit and to unload the mini disc mounted on the receiving end into the tray.

In addition, the method of loading and unloading a mini-disc player according to the present invention includes a first process of inputting a command to store a mini-disc inserted into the storage end and a mini-disc in an initial position of the first disc transfer unit. A second process of inserting the second process, a third process of completing the loading of the mini disc into the tray by the first disc transfer unit, a fourth process of moving the tray to a desired position of the storage end, and a first disc transfer unit of the mini disc. A fifth process of transferring the tray from the tray toward the storage end, a sixth process of completing the loading of the mini-disc into the storage end by a second disc transfer unit, and a seventh process of restoring the second disc transfer unit to its initial position. It is done.

In addition, the method of loading and unloading a mini-disc player according to the present invention includes a first process of inputting a command to move to an initial position while waiting for a command after loading the mini-disc into a storage stage, and a tray moving to an eject position. And a third process of moving the first disc transfer unit to the initial position.

In addition, the method of loading and unloading a mini-disc player according to the present invention includes a first process of seating the first mini-disc on a storage stage and then injecting a second mini-disc stored in another storage stage while waiting for a command; A second process of moving the tray to a desired storage end; a third process of unloading the second mini disc into the tray; and a fourth process of restoring the third disc transport to an initial position; A fifth process of completing the unloading of the second mini-disc into the tray, a sixth process of moving the tray to the eject position, and a seventh process of unloading the second mini-disc to the outside It is characterized by consisting of a process.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 illustrates a general multi-mini disc player, in which a tray 2 capable of vertically moving vertically is mounted in the first half of the chassis 1, and a plurality of mini discs MD are mounted in the second half of the chassis 1. A plurality of storage stages 3 to be stored are fixed, and a disc playing stage 4 is mounted in the chassis 1 below the storage stage 3 to play the mini disc MD.

2 shows a loading and unloading device of a mini-disc player according to the present invention, a loading motor unit mounted on the tray 2 and a power source, and mounted on the tray 2 to power the loading motor unit. A first disc transfer unit for receiving the mini disc MD from the tray 2, a lever motor unit mounted on the tray 2 and a power source, and a lever motor unit mounted on the tray 2. A second disc transfer unit configured to receive the power and load the mini disc MD mounted on the tray 2 into the storage end 3, and a power supply unit mounted on the tray 2 to receive power from the lever motor unit; It consists of a third disk transfer unit for unloading the mini-disc (MD) seated in 3) to the tray (2).

Here, the loading motor unit is a loading motor 11 which is a power source, a worm gear 12 press-fitted to the loading motor 11, and an intermediate gear for transmitting the power of the loading motor 11 to the first disc transfer unit ( 13).

The first disc transfer unit may be configured to hold a loading groove of the mini disc MD while moving left and right horizontally and to load and unload the mini disc MD while moving back and forth horizontally, and the loading motor as the holder structure. The first power transmission means for transmitting the negative power.

The holder structure detects the presence of the locker 14 fitted into the loading groove of the mini-disc (MD) and the mini-disc (MD) forcibly inserted from the outside, and the loading groove and the locker (14) of the mini-disc (MD) It consists of the stopper 15 which makes it become a straight line.

The first power transmission means is formed on the first rack plate 16 and the first rack plate 16 to move horizontally forward and backward by receiving power from the loading motor unit. The cam groove 17, the guide groove 18 formed in the tray 2, and the holder structure is mounted on the A first driving pin 19 inserted into the type cam groove 17 and the guide groove 18 to move the holder structure forward and backward or horizontally or horizontally and horizontally as the first rack plate 16 moves forward and backward horizontally; It consists of a first sensing unit for detecting the position of one rack plate (16).

Here, the first sensing unit is formed on the first position sensor 20 mounted on the tray 2 and the first rack plate 16 and the first rack plate 16 is in the initial position if the first position is in the first position. The first position sensor 20 when the eleventh sensing hole 21 sensed by the sensor 20 and the first rack plate 16 and the mini disc MD are completely seated on the tray 2 are provided. The first sensing plate 22 is detected by the first position sensor 20 is formed in the first rack plate 16 and the first rack plate 16 is located in the rearmost position detected by the The thirteenth sensing hole 23 is formed.

In addition, the lever motor unit is a power source of the lever motor 24, the worm gear 25 pressed into the lever motor 24, and the power of the lever motor 24 to the second disk transfer unit or the third disk transfer unit It consists of a transmission gear 26.

In addition, the second disk conveying unit is a loading lever 27 for completely seating the mini-disc (MD) moved slightly from the tray 2 toward the storage end (3) by the first disk conveying unit to the storage end (3), It is composed of a second power transmission means for transmitting the power of the lever motor unit to the loading lever 27 to rotate the loading lever 27.

The second power transmission means is engaged with the lever motor portion, the second rack plate 28 horizontally moving forward and backward, the Г-shaped cam groove 29 formed in the second rack plate 28, and the loading lever 27 And a second driving pin 30 to be inserted into the Г-shaped cam groove 29 so that the loading lever 27 rotates when the second rack plate 28 moves in the front direction of the tray. It consists of a second sensing unit for detecting the position of the plate 28.

Here, the second sensing unit is formed on the second position sensor 31 fixed to the tray 2, the second rack plate 28 and the second rack plate 28 is located in the initial position when the second The twenty-first sensing hole 32 sensed by the position sensor 31 and the second rack plate 28 are formed in the second rack plate 28 and the loading lever 27 is rotated when the second lever is rotated. It consists of a twenty-second sensing hole (33) detected by the two-position sensor (31).

In addition, the third disc transfer unit is located at the rear end of the storage end (3) take-out lever 35 for unloading the mini-disc (MD) seated on the storage end (3) to the tray (2), and the lever It is composed of a third power transmission means for transmitting the power of the motor unit to the take-off lever 35 to rotate the take-out lever 35.

The third power transmission means is engaged with the lever motor unit and moves horizontally forward and backward to the second rack plate 28, the b-shaped cam groove 36 formed on the second rack plate 28, and the take-out lever 35 And a third drive pin 37 configured to be inserted into the b-shaped cam groove 36 to rotate the take-out lever 35 when the second rack plate 28 moves in the rearward direction of the storage end, and the second rack plate. It consists of a second sensing unit for detecting the position of 28.

Here, the second sensing unit is formed on the second position sensor 31 fixed to the tray 2, the second rack plate 28 and the second rack plate 28 is located in the initial position when the second The twenty-first sensing hole 32 sensed by the position sensor 31 and the second rack plate 28 are formed in the second rack plate 28 and the eject lever 35 rotates when the second lever plate 28 is moved. It consists of a twenty-third sensing hole 34 sensed by the two-position sensor (31).

Referring to the operation of the present invention configured as described above are as follows.

First, referring to FIGS. 2 to 4, a process of loading the mini disc MD from the outside into the storage end 3 is described. The holder structure is positioned at an initial position to receive the mini disc MD inserted from the outside. As shown in FIG. 3A, the initial position of the holder structure is determined by the first rack plate 16 of the tray 2 so that the first position sensor 20 detects the eleventh sensing hole 21. Moving to the forefront, and the first drive pin (19) The locker 14 is spaced apart from the tray 2 and the stopper 15 is moved into the tray 2 by moving to the left by the mold cam groove 17 and the guide groove 18.

When the mini disc MD is forcibly inserted from the outside while the holder structure is in the initial position as described above, the loading groove of the mini disc MD and the locker 14 form a straight line. The MD stops entering further, and the loading motor 11 drives in the disc loading direction.

When the loading motor 11 is driven in the disc loading direction, the rotational force of the loading motor 11 is transmitted to the first rack plate 16 through the worm gear 12 and the intermediate gear 13 to provide the first rack. The plate 16 is moved horizontally in the rear direction of the tray, and as shown in FIG. 3B, the first driving pin 19 is The locker 14 is inserted into the loading groove of the mini-disc MD while moving to the right along the trajectory of the mold cam groove 17 and the guide groove 18.

As shown in FIG. 3C, when the loading motor 11 continuously drives in the disc loading direction while the locker 14 holds the loading groove of the mini disc MD as described above, the first rack plate 16 may be used. The mini disc MD is completely loaded into the tray 2 while horizontally moving in the tray rearward direction with the locker 14.

At this time, the first position sensor 20 detects the twelfth sensing hole 22 and the loading motor 11 stops driving.

As described above, the tray 2 can move to a desired storage end 3 position while vertically moving in the state in which the mini disc MD is seated, which is based on the selecting motor and the step plate.

When the tray 2 is moved to the desired position of the storage end 3, the loading motor 11 drives again in the disc loading direction so that the first rack plate 16 moves horizontally in the rear direction of the tray. 1 drive pin (19) The cam cam 17 and the guide groove 18 are moved along the trajectory, and the locker 14 moves the mini disc MD slightly from the tray 2 toward the storage end 3 and the stopper 15. And the locker 14 is moved horizontally to the left to leave the tray 2.

That is, as shown in FIG. 3D, when both the locker 14 and the stopper 15 are separated from the tray 2, the first position sensor 20 detects the thirteenth sensing hole 23 and the loading motor 11 is driven. Stop.

In the state where the mini-disc MD slightly advances toward the storage end 3 as described above, the lever motor 24 is driven in the disc loading direction so that the rotational force of the lever motor 24 is increased with the worm gear 25 and the intermediate gear. When the second rack plate 28 is transferred to the second rack plate 28 through 26, the second rack plate 28 moves horizontally in the front direction of the tray as shown in FIG. 4, and the second driving pin 30 is formed in a Г shape. The loading lever 27 rotates clockwise while moving along the trajectory of the cam groove 29.

At this time, the loading lever 27 rotates and loads the mini disc MD slightly off the tray 2 into the storage end 3, and the mini disc MD is loaded and the second position sensor 31 is completed. ) Detects the twenty-second sensing hole 33, the lever motor 24 stops driving.

When the loading of the mini disc MD is completed as described above, the lever motor 24 is driven in the disc unloading direction, and the second rack plate 28 is horizontally moved in the front direction of the tray so that the second position sensor 31 is moved. Detects the twenty-first sensing hole 32 indicating the initial position of the second rack plate 28, the lever motor 24 stops driving.

In addition, the process of unloading the mini-disc MD stored in the other storage stage to the outside through the tray 2 in the state in which the mini-disc MD is stored in the arbitrary storage stage 3 as described above. 3 and 5, the tray 2 is moved to the position of the desired storage end 3 by the selecting motor and the step plate.

After the tray 2 moves to the desired position of the storage end 3, the lever motor 24 drives in the disc unloading direction so that the second rack plate 28 moves in the rearward direction of the storage end. As shown in the drawing, the ejection lever 35 rotates counterclockwise while the third driving pin 37 moves along the trajectory of the B-shaped cam groove 36.

At this time, the take-out lever 35 unloads the mini-disc MD stored in the storage end 3 toward the tray 2, as shown in FIG. 3D, the locker 14 and the mini-disc ( The mini disc MD is transferred to a position where the loading groove of the MD is aligned. At this time, when the second position sensor 31 detects the 23rd sensing hole 34, the lever motor 24 stops driving.

In addition, the loading lever 27 guides the mini disc MD so that the mini disc MD does not flow while the take-out lever 35 transfers the mini disc MD to the tray 2 as described above. do.

The take-out lever 35 has to be repositioned after the mini disc MD is transferred to the tray 2, and the lever motor 24 is driven in the disc loading direction so that the second rack plate 28 moves in the tray front direction. When the second position sensor 31 detects the twenty-first sensing hole 32 and moves horizontally, both the second rack plate 28, the extraction lever 35, and the loading lever 27 are returned to their original positions. 24 stops driving.

When the takeout lever 35 is returned to the original position as described above, the loading motor 11 should be driven to completely unload the mini-disc MD to the tray 2. When the first rack plate 16 is moved horizontally in the front direction of the tray, the locker 14 is inserted into the loading groove of the mini-disc MD as shown in FIG. 3B, and the first position sensor 20 is driven. Detects the twelfth sensing hole 22, the loading motor 11 stops driving because the mini-disc MD is unloaded to the tray 2.

When the mini disc MD is unloaded to the tray 2 and the mini disc MD is seated on the tray 2 as described above, the tray 2 is moved to the eject position by the selecting motor and the step plate. Move.

If the loading motor 11 drives in the disc unloading direction after the tray 2 moves to the eject position, the locker 14 moves in the tray front direction while holding the loading groove of the mini disc MD. The mini-disc MD is unloaded to the outside.

At this time, when the first position sensor 20 detects the eleventh sensing hole 21, the lever motor 24 stops driving. As shown in FIG. It is a state which moved horizontally to the left by the type | mold cam groove 17, and the locker 14 becomes an initial state which escape | deviated from the loading groove of a mini disc.

As described above, when the locker 14 moves away from the loading groove of the mini disc MD, the mini disc MD may be easily taken out from the outside.

A method of loading, unloading, and unloading a mini-disc player configured and functioning as described above will be described with reference to FIGS. 6 to 8.

The loading and unloading method of a mini disc player for storing an externally inserted mini disc MD in the storage stage 3 includes a first process of inputting a mini disc storage command as shown in FIG. 6, and a first disc. A second process of inserting the mini disc MD in a state where the transfer part is in the initial position, a third process of completing loading of the mini disc MD on the tray 2 by the first disc transfer part, and the tray 2; A fourth process of moving to a desired position of the storage end 3, a fifth process of transferring the mini-disc MD from the tray 2 toward the storage end 3, and a second disk transport of the first disk transport unit. The sixth process of loading the mini-disc MD into the storage stage 3 and the seventh process of restoring the second disc transfer unit to an initial position.

Here, the second process is a process of forcibly inserting the mini-disc until it is stopped by the stopper 15, and in the third process, the loading motor 11 is driven in the disc loading direction so that the first rack plate 16 Is moved horizontally to the rear of the tray, the first position sensor 20 detects the twelfth sensing hole 22, and the loading motor 11 stops driving.

In the fifth process, the loading motor 11 drives in the disc loading direction so that the first rack plate 16 moves horizontally in the rear direction of the tray, and the first position sensor 20 moves to the thirteenth sensing hole 23. And a step in which the loading motor 11 stops driving. In the sixth process, the lever motor 24 drives in the disc loading direction so that the second rack plate 28 moves in the tray front direction. Moving to the second position sensor 31, the second position sensor 31 detecting the twenty-second sensing hole 33, and the lever motor 24 stops driving.

In the seventh process, the lever motor 24 is driven in the disc unloading direction to move the second rack plate 28 in the rearward direction of the storage end, and the second position sensor 31 is moved to the twenty-first sensing hole 32. ) And the lever motor 24 stops driving.

In addition, the loading and unloading method of the mini-disc player, which loads the mini-disc MD into the storage stage 3 and moves to the initial position while waiting for the command, is inputted by a command to move to the initial position as shown in FIG. 7. And a second process of moving the tray 2 to the eject position, and a third process of moving the first disc transfer unit to the initial position.

In this third process, the loading motor 11 is driven in the disk unloading direction so that the first rack plate 16 moves horizontally in the front direction of the tray, and the first position sensor 20 is the eleventh sensing hole. And sensing the 21 and stopping the driving of the loading motor 11.

In addition, the loading and unloading method of the mini disc player for seating the first mini disc MD on the storage stage 3 and ejecting the second mini disc MD stored in another storage stage while waiting for the command is illustrated in FIG. 8. As described above, a first process of inputting a second mini-disc eject command, a second process of moving the tray 2 to a desired storage stage 3, and a third disc transfer unit to tray the second mini-disc MD A third process of unloading to (2), a fourth process of restoring the third disc transfer unit to an initial position, and a first disc transfer unit to complete the unloading of the second mini disc MD to the tray 2; The fifth process is performed, and the sixth process of moving the tray 2 to the eject position, and the seventh process of unloading the second mini disc MD to the first disc transfer unit.

In this case, if the second mini-disc MD does not exist, the method includes displaying a mini-disc, and the third process includes driving the lever motor 24 in the direction of the unloading of the disc to form a second rack plate ( 28 moves in the rearward direction of the storage end, the second position sensor 31 detects the twenty-third sensing hole 34, and the lever motor 24 stops driving.

In the fourth process, the lever motor 24 drives the disc loading direction so that the second rack plate 28 moves in the front direction of the tray, and the second position sensor 31 moves the twenty-first sensing hole 32. And a step in which the lever motor 24 stops driving, and in the fifth process, the loading motor 11 is driven in the disk unloading direction so that the first rack plate 16 is in the tray front direction. And horizontally moving to the first position sensor 20, sensing the twelfth sensing hole 22 by the first position sensor 20, and stopping the driving of the loading motor 11.

In the seventh process, the loading motor 11 is driven in the disk unloading direction so that the first rack plate 16 is horizontally moved in the forward direction of the tray, and the first position sensor 20 is the eleventh sensing hole 21. ) And stopping the driving of the loading motor 11.

As described above, the present invention is configured to enable the loading and unloading of the mini-disc with two power sources, thereby reducing the assembly process time and cost, and using the roller because it can be loaded and unloaded without using a rubber roller. Even if a lot of time passes, the mini disk can be loaded and unloaded smoothly, thereby improving the reliability of the product and extending the life of the product.

Claims (30)

A loading motor unit mounted on the tray and being a power source, a first disk conveying unit mounted on the tray and transferring power of the loading motor unit to transfer a mini disc in the tray, a lever motor unit mounted on the tray and a power source; And a second disc transfer unit mounted on the tray and receiving the power of the lever motor unit and loading the mini disc mounted on the tray into the storage end, and mounted on the tray and seated on the storage end receiving the power of the lever motor unit. Loading and unloading device of a mini-disc player, characterized in that consisting of a third disc transfer unit for unloading the mini-disc into the tray. The method of claim 1, The loading motor unit is a loading motor as a power source, a worm gear press-fitted to the loading motor, and a medium gear for transmitting the power of the loading motor to the first disk transfer unit, loading and unloading apparatus of the mini disc player . The method of claim 1, The first disc transfer unit is a holder structure for holding the loading groove of the mini disc while moving left and right horizontally and loading and unloading the mini disc while moving back and forth horizontally, and power transmission means for transmitting power of the loading motor unit to the holder structure. Loading and unloading device of the mini-disc player, characterized in that consisting of. The method of claim 3, The holder structure is a mini-disc player comprising a locker fitted into the loading groove of the mini-disc, and a stopper for detecting the presence or absence of a forced-inserted mini-disc and making the loading groove and the locker of the mini-disc in a straight line. Loading, unloading device. The method of claim 3, The power transmission means includes a first rack plate which is horizontally moved back and forth by receiving power of the loading motor unit, and formed on the first rack plate. A cam groove, a guide groove formed in the tray, and mounted on the holder structure Loading and unloading device of the mini-disc player, characterized in that the first drive pin is inserted into the cam groove and the guide groove to move the holder structure forward and backward horizontally or horizontally and horizontally moved as the first rack plate horizontally moved . The method of claim 5, The power transmission means loading and unloading apparatus of the mini-disc player, characterized in that it comprises a first sensing unit for detecting the position of the first rack plate. The method of claim 6, The first sensing unit, a first position sensor mounted on a tray, an eleventh sensing hole formed in the first rack plate and detected by the first position sensor when the first rack plate is in an initial position, and the first A 12th sensing hole formed in a rack plate and detected by the first position sensor when the mini-disc is fully seated in the tray; and a first sensing hole formed in the first rack plate and positioned in the rearmost position of the first rack plate. Loading and unloading device of the mini-disc player, characterized in that consisting of the thirteenth sensing hole detected by the position sensor. The method of claim 1, The lever motor unit comprises a lever motor as a power source, a worm gear press-fitted to the lever motor, and a medium gear for transmitting the power of the lever motor to the second disc transfer unit or the third disc transfer unit. Loading, unloading device. The method of claim 1, The second disc transfer unit may include a loading lever that completely seats the mini disc slightly moved from the tray toward the storage end by the first disk transport unit, and transmits the power of the lever motor unit to the loading lever to rotate the loading lever. Loading and unloading device of a mini-disc player, characterized in that consisting of a power transmission means to. The method of claim 9, The power transmission means is engaged with the lever motor unit and moves horizontally forward and backward, a second cam plate formed in the second rack plate, the cam lever groove formed in the loading lever and inserted into the Г cam cam groove, the second rack plate And a second driving pin configured to rotate the loading lever when the plate moves in the front direction. The method of claim 10, The power transmission means loading and unloading apparatus of the mini-disc player, characterized in that it comprises a second sensing unit for detecting the position of the second rack plate. The method of claim 11, The second sensing unit is a second position sensor fixed to the tray, a 21st sensing hole formed in the second rack plate and the second position sensor is detected by the second position sensor when the second rack plate is located in the initial position, and the second And a second sensing plate formed on a second rack plate and configured to sense a second sensing hole detected by the second position sensor when the second lever plate is moved and the loading lever rotates. The method of claim 1, The third disc transfer unit is located at the rear of the storage end and the take-out lever for unloading the mini-disc seated on the storage end to the tray, and transmits the power of the lever motor unit to the take-out lever to rotate the take-out lever. Loading and unloading device of a mini-disc player, characterized in that consisting of a power transmission means. The method of claim 13, The power transmission means is engaged with the lever motor unit and moves horizontally forward and backward, the b-shaped cam groove formed on the second rack plate, the take-out lever is inserted into the b-shaped cam groove and the second rack plate is accommodated. The loading and unloading device of the mini-disc player, characterized in that consisting of a third drive pin to rotate the take-out lever when moving in the rear direction. The method of claim 14, The power transmission means loading and unloading apparatus of the mini-disc player, characterized in that it comprises a second sensing unit for detecting the position of the second rack plate. The method of claim 15, The second sensing unit is a second position sensor fixed to the tray, a 21st sensing hole formed in the second rack plate and the second position sensor is detected by the second position sensor when the second rack plate is located in the initial position, and the second And a twenty-third sensing hole formed on a second rack plate and detected by the second position sensor when the second lever plate is moved and the ejector lever rotates. A first process of inputting a command to store an externally inserted minidisk in a storage end, a second process of inserting a minidisk in a state where the first disc transporter is in an initial position, and a first disc transporter of the minidisk A third process of completing the loading into the tray, a fourth process of moving the tray to a desired position of the storage end, a fifth process of transferring the mini disc from the tray to the storage end, and a second process of transferring the second disk. And a sixth process of completing the loading of the mini-disc into the storage stage and a seventh process of restoring the second disc transfer unit to the initial position. The method of claim 17, And the second process is a process of forcibly inserting the minidisc until the minidisc is stopped by the stopper. The method of claim 17, In the third process, the loading motor is driven in the disk loading direction so that the first rack plate is moved horizontally in the rear direction of the tray, the first position sensor detects the twelfth sensing hole, and the loading motor is driven. Method of loading and unloading a mini-disc player, characterized in that the step of stopping. The method of claim 17, In the fifth process, the loading motor is driven in a disc loading direction so that the first rack plate is moved horizontally in the rear direction of the tray, the first position sensor detects the thirteenth sensing hole, and the loading motor is driven. Method of loading and unloading a mini-disc player, characterized in that the step of stopping. The method of claim 17, In the sixth process, the lever motor is driven in the disc loading direction, and the second rack plate is moved forward in the tray, the second position sensor detects the 22nd sensing hole, and the lever motor stops driving. Loading and unloading method of the mini-disc player, characterized in that consisting of steps. The method of claim 17, In the seventh process, the lever motor is driven in a disc unloading direction to move the second rack plate in a rearward direction of the storage end, the second position sensor detects a twenty-first sensing hole, and the lever motor is driven. Method of loading and unloading a mini-disc player, characterized in that the step consisting of stopping. A first process of inputting a command to move to the initial position while waiting for the command after loading the mini-disc into the storage stage, a second process of moving the tray to the eject position, and a third process of moving the first disc transfer unit to the initial position Method of loading and unloading a mini-disc player, characterized in that consisting of a process. The method of claim 23, wherein In the third process, the loading motor is driven in the disk unloading direction so that the first rack plate is moved horizontally in the front direction of the tray, the first position sensor detects the eleventh sensing hole, and the loading motor is driven. Method of loading and unloading a mini-disc player, characterized in that the step consisting of stopping. The first process of seating the first mini-disc in the storage stage and the command for ejecting the second mini-disc stored in the other storage stage while the command is waiting, the second process of moving the tray to the desired storage stage, and the third disk A third process of the conveying unit unloading the second mini disc into the tray, a fourth process of the third disc conveying unit restoring to an initial position, and a first disc conveying unit completing the unloading of the second mini disc into the tray A fifth process, a sixth process of moving the tray to an eject position, and a seventh process of unloading the second mini-disc to the outside of the second mini-disc; . The method of claim 25, And if the second mini-disc does not exist, displaying the absence of the mini-disc. The method of claim 25, The third process includes the step of driving the lever motor in the disk unloading direction to move the second rack plate in the rear direction of the storage end, the second position sensor to detect the 23rd sensing hole, the lever motor is driven Method of loading and unloading a mini-disc player, characterized in that the step consisting of stopping. The method of claim 25, In the fourth process, the lever motor is driven in the disc loading direction, and the second rack plate is moved forward in the tray, the second position sensor detects the 21st sensing hole, and the lever motor stops driving. Loading and unloading method of the mini-disc player, characterized in that consisting of steps. The method of claim 25, In the fifth process, the loading motor is driven in the disk unloading direction so that the first rack plate is moved horizontally in the forward direction of the tray, the first position sensor detects the 12th sensing hole, and the loading motor is driven. Loading and unloading device of the mini-disc player, characterized in that consisting of a step of stopping. The method of claim 25, In the seventh process, the loading motor is driven in the disk unloading direction so that the first rack plate is moved horizontally in the front direction of the tray, the first position sensor detects the eleventh sensing hole, and the loading motor is driven. Method of loading and unloading a mini-disc player, characterized in that the step consisting of stopping.