KR100509244B1 - Disk-reproducing apparatus equipped with multi CD changer - Google Patents

Abstract

The present invention relates to a disc reproducing apparatus equipped with a multi changer, comprising: a locking groove (131) formed in each of a plurality of disc trays (130); The lock is installed on the outer surface of the main frame 100 in the area where the cartridge 110 is mounted, and can be caught in the locking groove 131 of the disc trays 130 or detached from the locking groove 131. A tray fixing and detachment module 140 provided with levers 141; The locking levers 141 are formed in an area spaced in a vertical line corresponding to a horizontal line of each of the locking levers 141, and press the other side of each of the locking levers 141 in a horizontal movement to lock the locking levers in the locking groove 131. A tray selection module 150 having unlocking protrusions 151 for leaving the fields 141; Consists of moving means for horizontally moving the tray selection module 150 or cartridge 110.

Therefore, the present invention has the effect of selectively extracting the disk or extracting the entire disk in an aligned state.

Description

Disc-reproducing apparatus equipped with multi CD changer}

The present invention relates to a disc reproducing apparatus provided with a multi changer, and more particularly, to a disc reproducing apparatus provided with a multi changer capable of extracting a disc selectively or extracting an entire disc in an aligned state.

In general, the multi changer is a product that can play and exchange a plurality of discs in one set, and there are a rotary type and a recently stacked type.

Here, the stacking type may reproduce the discs in the set as required by the user without changing the door of the set, and may exchange them with other discs outside the set during the reproduction.

In order to play a plurality of discs according to a user's request, such a stacked multi-changer needs to load the discs to the playback unit and connect the playback unit to the disc. Perform a series of functions that allow for replacement.

1 is a perspective view of a rotary changer of a disc reproducing apparatus according to the prior art, in which a roulette 3 having a plurality of disc accommodating portions 2 formed on a tray 1 is rotatably coupled, and the tray 1 One side of is coupled to the clamping member 4 for fixing the disk seated in the disk housing (2).

Therefore, when the user selects the desired disk, the playout is performed by the optical pickup (not shown) after the disk is fixed, when the selected receiver 2 is located in the clamping member 4 while the roulette 3 is rotated.

However, such a conventional rotary changer is limited to accommodate a plurality of discs in a single roulette, so that if you want to play more discs, it is inconvenient to replace the discs, and storing a large number of discs is difficult. There was a difficult problem.

Accordingly, an object of the present invention is to provide a disc reproducing apparatus having a multi changer capable of selectively extracting a disc or extracting a whole disc in an aligned state. .

A preferred aspect for achieving the above object of the present invention, the mainframe 100, and the cartridge 110 can be transported in the mainframe 100, the plurality of disk trays are seated and stacked )Wow; In the disc reproducing apparatus comprising an optical pickup module spaced inwardly into the cartridge 110 is installed on one side of the main frame 100,

A locking groove 131 formed in each of the plurality of disc trays 130;

Is installed on the outer surface of the main frame 100 in the area where the cartridge 110 is mounted, and may be caught in the locking groove 131 of the disk trays 130 or may be detached from the locking groove 131. A tray fixing and disengaging module 140 having locking levers 141;

The locking levers 141 are formed in an area spaced in a vertical line corresponding to a horizontal line of each of the locking levers 141, and press the other side of each of the locking levers 141 in a horizontal movement to lock the locking levers in the locking groove 131. A tray selection module 150 having unlocking protrusions 151 for leaving the fields 141;

There is provided a disc reproducing apparatus equipped with a multi changer, wherein the moving means for horizontally moving the tray selection module 150 or the cartridge 110 is further configured.

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

2 is a combined perspective view of a disc reproducing apparatus having a multi-changer according to the present invention, wherein the disc reproducing apparatus of the present invention includes a main frame 100; A cartridge 110 which can be transported by rails 121a and 121b installed at both sides of the main frame 100; An optical pickup module 120 spaced inwardly of the cartridge 110 and installed on one side of the main frame 100; A plurality of disc trays (130) stacked on the cartridge (110), each of which has a disc seated thereon, and each of which has a locking groove; The tray is installed on the outer surface of the main frame 100 in the area where the cartridge 110 is mounted, the tray is provided with locking levers that can be caught in the locking groove of the disk trays 130 or can be detached from the locking groove. Fixing and leaving module 140 and; A tray having lock release protrusions corresponding to a horizontal line of each of the locking levers and spaced apart from each other in a vertical line, and pressing the other side of each of the locking levers in a horizontal movement to release the locking levers from the locking groove; A selection module 150; It consists of moving means for horizontally moving the tray selection module 150 or the cartridge 110.

Figure 3 is a perspective view of the tray of the multi-changer according to the present invention, the locking groove 131 is formed on the side of the tray 130 facing the cartridge, the disk seat 132 is formed therein, The disc seating portion 132 is formed with an opening hole 133 for reading the disc for reproduction.

Figure 4 is a perspective view of the cartridge of the multi-changer according to the present invention, one side of the cartridge 110 opposite to the locking groove 131 of the tray shown in Figure 3 on the same horizontal line with the locking grooves of each tray Locking windows 121 are formed, and rails 122 protruding spaced out sequentially are formed between the locking windows 121.

5 is a perspective view of the tray fixing and release module of the multi-changer according to the present invention, each of the trays through the tray locking groove 131 of the cartridge 110 shown in FIG. A plurality of locking levers 141 are formed on one side of the locking protrusions 141a which are caught by the locking grooves of the lock groove.

In addition, in the area of the tray fixing and releasing module 140 spaced apart from the area where the locking protrusions 141a are formed, the tray spaced apart by the distance 'L' in a vertical line with the respective locking protrusions 141a is selected. Dragon protrusions 142 are formed.

FIG. 6 is an exploded perspective view illustrating a coupling relationship between the tray fixing and separating module of FIG. 5. When the tray fixing and removing module 140 is viewed in more detail, a plurality of horizontal rectangular holes 144 are formed to be spaced apart from each other. The first and second rotation axes 146 and 147 are spaced apart from each other in the vertical direction in the horizontal rectangular holes 144, and vertical rectangular holes 148 are formed to communicate with the horizontal rectangular holes 144. Main plate 145; A rotating shaft guide part 141d mounted to the first rotating shafts 146 is formed in a central region, and a locking protrusion 141a protrudes from one side, and the locking protrusion 141a and the rotating shaft are formed. A front projection 141e is formed between the guide portions 141d, and a first rear projection 141b is formed at one rear, and the second rear projection is spaced apart from the first rear projection 141b at the other rear. A plurality of locking levers 141 in which 141c is formed; One side rear contact with the front protrusion 141e of the locking lever 141, the front protrusion 143b is formed on the one front, the rotary shaft guide portion 143a mounted to the second rotary shaft 147 is A plurality of interlocking levers 143 formed in a central area and provided with a tray selection protrusion 142 protruding from the other front; The main body 149a1 is fastened to the main plate 145, and a plurality of extension parts 149a2 extending to the main body 149a1 are in contact with the front protrusion 141e of each of the locking levers 141. An elastic member 149a; The main body 149b1 is fastened to the main plate 145, and a plurality of extension parts 149b2 extending to the main body 149b1 contact the front protrusion 143b of each of the interlocking levers 143. It consists of two elastic members 149b.

The tray fixing and disengaging module configured as described above is equipped with locking levers 141 and rotary shaft guide parts 141d and 143a of the interlocking levers 143 on the first and second rotary shafts 146 and 147 of the main plate 145. do.

When the main bodies 149a1 and 149b1 of the first and second elastic members 149a and 149b are fastened to the main plate 145, the extension parts 149a2 of the first elastic member 149a are locked. Each front projection 141e of the field 141 is in contact, and extensions 149b2 of the second elastic member 149b are in contact with each of the front projections 143b of the linkage levers 143. .

FIG. 7 is a partial perspective view illustrating a region in which tray fixing and release modules are installed in a main frame of a multi-changer according to the present invention, and are spaced apart from each other on an outer surface of the main frame 100 in a region where disk trays are stacked. One to three windows 101, 102, 103 are formed.

First, the tray selection protrusions 142 of the interlocking levers 143 shown in FIG. 6 are inserted into the first window 101, and the second window 102 is formed of the second elastic portion 149b. The protrusions 141a of the locking levers 141 are inserted into the third window 103 to freely move the extension parts 149b2.

That is, the locking protrusions 141a of the tray fixing and detaching module of FIG. 6 may include the third windows 103 formed on the main frame 100 and the locking windows 121 of the cartridge shown in FIG. 4. Through the through, it is inserted into each of the locking grooves 131 of the trays 130 shown in Figure 3, thereby limiting the movement of the disk trays 130.

Of course, the locking protrusions 141a may be separated from the locking groove 131, and the operation thereof will be described with reference to the following drawings.

8 is a perspective view of the tray selection module according to the present invention, the tray selection module 150 is fastened to the rear of the tray fixing and release module 140 of Figure 5, the unlocking projections 151 is a plate-shaped lock lever The unlocking state moving groove 153 of the same length on the left and right horizontal lines of the unlocking protrusions 151 protruding from the operation prohibiting plate 155 and formed in a stepped shape in an area spaced in a vertical line. And the locked state moving groove 152 is formed.

Here, the unlocking protrusions 151 press the second rear protrusion 141c of the lock lever 141 in the tray fixing and release module 140 of FIG. 6 to lock the protrusion of the lock lever 141. 141a may be separated from the locking groove 131 of the tray 130.

When the second rear protrusion 141c is present in the locked state moving groove 152 of the tray selection module 150 configured as described above, the locking protrusion 141a of the locking lever 141 is inserted into the locking groove of the tray. As a result, the tray does not move and is not extracted out of the disc player.

Thereafter, when the tray selection module 150 is moved in the horizontal direction, the unlocking protrusions 151 press the second rear protrusion 141c and, in this operation, lock the locking lever 141. The protrusion 141a is separated from the locking groove of the tray.

Subsequently, when the second rear protrusion 141c is present in the unlocked state moving groove 153, the tray maintains the unlocked state. The lock lever operation prohibiting plate 155 is an area for restricting the second rear protrusion 141c from moving further.

On the other hand, the lower plate member 157 of the lock lever operation inhibiting plate 155 is formed with a transfer gear 158, it is connected to the gear of the moving means can move the tray selection module 150 horizontally.

9A and 9B are partial cross-sectional views illustrating an operation of releasing a disc tray in a locked state according to the present invention. First, in FIG. 9A, a locking protrusion (not shown) of the locking lever 141 of the tray fixing and release module 140 is shown. 141a is inserted into the locking groove 131 of the disc tray 130 through the third window 103 of the mainframe 100 and the locking window 121 of the cartridge 110, so that the disc tray 130 is It is locked.

In this state, when the tray selection module 150 mounted on the outside of the tray fixing and detaching module 140 is moved to the left side as shown in FIG. 9B, the unlocking protrusion 151 of the tray selection module 150 is a locking lever ( The second rear projection 141c of the 141 is pushed, and the rotation shaft guide portion 141d of the locking lever 141 is rotated about the rotation shaft 146, so that the locking projection 141a of the disk tray 130 It is separated from the groove 131.

At this time, the tray is in the unlocked state, and the unlocked tray can be extracted from the disc reproducing apparatus by the movement of the cartridge by the conveying means.

10 is a partial cross-sectional view showing the state of a tray that is not unlocked when the cartridge is moved out of the apparatus according to the present invention. After the unlocking of the tray is selected, the cartridge is extracted out of the apparatus. Must be transported.

At this time, the selected tray to be transported to the outside of the device is in the state of Figure 9b, that is, the locking projection 141a of the locking lever 141 is separated from the locking groove 131 of the tray 130, the cartridge 110 Is extracted to the outside of the device.

On the contrary, the unselected tray is in the state of FIG. 10 after the cartridge is moved, and the locking protrusion 141a of the locking lever 141 is caught in the locking groove 131 of the tray 130 and the cartridge ( As a result of the movement of the 110, the tray selection protrusion 142 of the interlocking lever 143 passes over the jaw of the rail 122 of the cartridge 110 shown in FIG. 4.

11 is a partial cross-sectional view showing each tray state when the entire tray is extracted in accordance with the present invention, the locking projection 141a of the lock lever 141 is for locking the tray 130 when the entire tray is extracted. Departed from the groove 131, the tray selection protrusion 142 of the interlocking lever 143 is beyond the jaw of the rail 122 of the cartridge 110 shown in Figure 4 by the movement of the cartridge 110, There is no restriction on movement, so the entire tray is taken out of the device by the movement of the cartridge.

Hereinafter, a state in which the multi changer of the disc player according to the present invention is operated will be described with reference to the drawings.

First, the multi-changer of the present invention, as shown in Figure 9a, the locking projection 141a of the locking lever 121 is inserted into the locking groove 131 of the entire tray 130, as shown in FIG. In the state where the disc trays 130 are arranged side by side as shown in FIG. 12, the locking grooves 131 formed in the disc trays 130 are also arranged side by side. Since the rear protrusion 141b of the locking lever 141 provided in the tray fixing and detaching module 140 is inserted into the locking groove 131, the disc tray 130 may be locked to prevent movement. .

Thereafter, as shown in FIG. 9B, when the locking projection 141a of the locking lever 121 is separated from the locking groove 131 of the selected tray 130, the cartridge 110 moves together with the movement of the cartridge 110. The selected tray is extracted to the outside of the disc reproducing apparatus. When the tray selection module 150 is moved (leftward in FIG. 9B), an end of the unlocking protrusion 151 of the tray selection module 150 is connected to the lock lever 141. When the end of the rear protrusion 141c is pressed, the locking lever 141 rotates about the rotation shaft 146, and when the locking lever 141 rotates, the locking protrusion 141a is a locking groove of the tray 130. At 131, the locking protrusion 141a of the locking lever 141 is separated. The locking projection 141a is inserted into the locking groove 131 of the tray 130, and thus the tray 130 has a locking groove 131 of the tray 130 from the locking projection 141a. When the locking protrusion 141a is detached from the cartridge 110, it is possible to move along the cartridge 110, thereby selecting and moving the tray 130. However, at this time, the remaining tray 130 is not selected, the locking projection 141a of the locking lever 141 is inserted into the locking groove 131 of the tray 130 to restrict the movement as shown in FIG. Since the jaw formed at the end of the rail 122 provided on the side of the cartridge 110 to be moved pushes out the tray selection protrusion 142 to rotate the interlocking lever 143, even if the cartridge 110 is moved, It cannot be moved together with the cartridge 110 and is locked by the tray fixing and detachment module 140. As a result, the user can exchange or check only the selected disk.

And, as shown in Figure 11, the locking projection 141a of the locking lever 141 is separated from the locking groove 131 of the entire tray 130, the tray selection projection 142 of the interlocking lever 143. ) Is beyond the jaw of the rail 122 of the cartridge 110 by the movement of the cartridge 110, if the cartridge movement is not restricted at all, the entire tray is moved out of the device as shown in Figure 14 by the movement of the cartridge As shown in FIG. 11, when the tray selection module 150 is moved as far as possible to the left in the initial locking state (FIG. 9), the locking protrusion 141a of the locking lever 141 is sequentially formed. ) Are separated from the locking groove 131 of the disc tray 130 to release the restraint of the disc tray 130. In this state, when the disc trays 130 are transferred using the transfer means, as shown in FIG. 14, the entire disc tray 130 is extracted together with the cartridge 110.

Here, as shown in FIG. 9B, the locking protrusion 141a of the locking lever 141 is detached from the locking groove 131 of the entire trays 130, and the tray selection protrusion of the linkage lever 143 ( If the 142 does not exceed the jaw of the rail 122 of the cartridge 110, the trays are extracted outside the apparatus in a stepped shape as shown in Fig. 15. If the tray selection module 150 is moved to the left, the tray selection module The disc tray 130 may be moved by the unlocking protrusion 151 of the 150 to move the disc tray 130. In the state where the tray selection module 150 is moved to the left side, the tray selection module ( Each of the unlocking protrusions 151 of the 150 presses the rear protrusion 141c of the locking lever 141 to lock the protrusion 141a of the locking lever 141 in the locking groove 131 of the tray 130. The cartridge 110 is removed while the tray 130 is released from the restraint. By moving, each tray 130 is locked by the jaws formed in the mutually inclined directions on the rails 122 on the outside of the cartridge 110, so that the tray 130 is discharged together with the cartridge 110 and stepped out as shown in FIG. Each side of the disc tray 130 is formed so as to be inclined to each other in parallel with the jaw is inclined, and each disc tray sequentially from the disc tray 130 at the bottom by the jaw of the rail 122 formed in a mutually inclined direction Since the lock state of the 130 is released, the disc tray 1300 is stepped out. That is, in FIG. 14, the lock of each disc tray 130 is completely released, and then the cartridge 110 is moved to move the entire disc tray ( 130 is transferred at a time, but in FIG. 15, the cartridge 110 is moved in the process of releasing the lock of each disc tray 130 to sequentially lock the disc tray 130. The disc tray 130 is cascaded so as to be released.

On the other hand, as shown in Fig. 16, even when one of the disc trays of the multi-changer is being played back, the trays selected by unlocking are extracted to the outside of the apparatus as shown in Fig.

Further, the unlocked entire trays are completely extracted to the outside of the apparatus, as shown in FIG. 18, or also extracted in a step shape, as shown in FIG. 19. FIGS. 16 to 19 correspond to FIGS. 12 to 15, respectively. 16 to 19 show one disc tray 130 of a plurality of disc trays 130 being transferred to the optical pickup module 120 by a transfer means and being reproduced, as shown in FIGS. 12 to 15. With the exception of the disc tray 130 during one playback, the remaining disc trays 130 are locked (Fig. 16), one disc tray 130 is selected and extracted to the outside (Fig. 17), The entire disk tray 130 is extracted to the outside (FIG. 18), and the remaining disk trays 130 are extracted to the staircase shape (FIG. 19). Except located on pickup module 120 The operation applied to the cartridge 110, the remaining disk tray 130, which is not located in the optical pickup module 120, the tray fixing and detaching module 140, and the tray selection module 150 are the same as those of FIGS. The operation or state of the disc tray 130 is also the same except that one disc tray 130 is located in the optical pickup module 120.

According to the present invention, an effect of selectively extracting a disk or extracting an entire disk in an aligned state occurs.

Although the invention has been described in detail only with respect to specific examples, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.

1 is a perspective view of a rotary changer of a disc reproducing apparatus according to the prior art;

2 is a perspective view of a combination of a disc reproducing apparatus having a multi changer according to the present invention;

3 is a perspective view of the tray of the multi-changer according to the present invention

4 is a perspective view of the cartridge of the multi-changer according to the present invention

5 is a perspective view of the tray fixing and release module of the multi-changer according to the present invention

6 is an exploded perspective view of the tray fixing and leaving module of FIG.

7 is a partial perspective view showing an area where the tray fixing and release module is installed in the main frame of the multi-changer according to the present invention

8 is a perspective view of a tray selection module according to the present invention;

9A and 9B are partial cross-sectional views illustrating an operation in which the disc tray is released from the locked state according to the present invention.

10 is a partial cross-sectional view showing the state of the tray which is not unlocked when the cartridge is moved out of the apparatus according to the present invention.

11 is a partial cross-sectional view showing each tray state when the entire tray is extracted in accordance with the present invention.

12 is a perspective view showing a state in which all the disc trays of the multi-changer according to the present invention are locked.

Figure 13 is a perspective view showing a state in which the selected tray of the disk trays of the multi-changer according to the present invention is extracted to the outside of the device

Figure 14 is a perspective view showing a state in which the entire disk trays of the multi-changer according to the present invention is extracted to the outside of the device

Fig. 15 is a perspective view showing a state where all of the disc trays of the multi-changer according to the present invention have been stepped out of the apparatus together with the cartridge transfer.

16 is a perspective view showing a state in which one of the disc trays of the multi-changer according to the present invention is being played back;

17 is a perspective view showing a state in which one of the disc trays of the multi-changer according to the present invention is being played and the lock is released and the selected tray is extracted out of the apparatus;

18 is a perspective view showing a state in which one of the disc trays of the multi-changer according to the present invention is being played back and all the unlocked trays are extracted to the outside of the apparatus;

19 is a perspective view showing a state in which one of the disc trays of the multi-changer according to the present invention is being reproduced, and all the unlocked trays are extracted outside the apparatus in a staircase shape.

<Description of the symbols for the main parts of the drawings>

100: mainframe 101,102,103: window

110: cartridge 120: optical pickup module

121: Locking window 121a, 121b: Rail

122: rail 130: disc tray

131: locking groove 132: disc seat

133: opening hole 140: tray fixing and release module

141: locking lever 141a: locking projection

141b, 141c: rear projection 141d, 143a: rotation shaft guide portion

141e, 143b: front projection 142: tray selection projection

143: linkage lever 145: main plate

146,147: axis of rotation 148: vertical rectangular hole

149a, 149b: elastic member 149a1, 149b1: main body

149a2, 149b2: extension 150: tray selection module

151: unlocking protrusion 152: locking state moving groove

153: unlocked state moving groove 155: lock lever operation prohibited plate

157: lower plate

Claims (6)

A main frame 100 and a cartridge 110 which can be transported in the main frame 100 and in which a plurality of disc trays are seated and stacked; In the disc reproducing apparatus comprising an optical pickup module spaced inwardly into the cartridge 110 is installed on one side of the main frame 100, A locking groove 131 formed in each of the plurality of disc trays 130; Is installed on the outer surface of the main frame 100 in the area where the cartridge 110 is mounted, and may be caught in the locking groove 131 of the disk trays 130 or may be detached from the locking groove 131. A tray fixing and disengaging module 140 having locking levers 141; The locking levers 141 are formed in an area spaced in a vertical line corresponding to a horizontal line of each of the locking levers 141, and press the other side of each of the locking levers 141 in a horizontal movement to lock the locking levers in the locking groove 131. A tray selection module 150 having unlocking protrusions 151 for leaving the fields 141; And a moving means for horizontally moving the tray selection module (150) or the cartridge (110). (Correction) The method according to claim 1, Locking windows 121 are formed on one side of the cartridge 110 opposite to the locking groove 131 of the tray on the same horizontal line as the locking grooves 131 of the respective trays. The locking levers 141 of the tray fixing and releasing module 140 are inserted into the locking grooves 131 of the trays through the locking window 121 of the cartridge 110. A disc playback device equipped with a multi changer. The method of claim 2, Between the locking windows 121 of the cartridge 110 are formed rails 122 are projected apart from each other, For tray selection spaced apart by a predetermined distance (L) in a vertical line with each of the locking projections (141a) in the area of the tray fixing and release module 140 spaced apart from the area where the locking projections (141a) is formed. Protrusions 142 are formed, And the tray selection protrusions (142) are on the same line as the rails (122). The method of claim 3, wherein The tray fixing and leaving module 140, A plurality of horizontal rectangular holes 144 are formed to be spaced apart from each other, and each of the horizontal rectangular holes 144 is spaced apart from each other in a vertical direction to form first and second rotation axes 146 and 147, and the horizontal rectangular holes A main plate 145 having a vertical rectangular hole 148 in communication with 144; A rotating shaft guide part 141d mounted to the first rotating shafts 146 is formed in a central region, and a locking protrusion 141a protrudes from one side, and the locking protrusion 141a and the rotating shaft are formed. A front projection 141e is formed between the guide portions 141d, and a first rear projection 141b is formed at one rear, and the second rear projection is spaced apart from the first rear projection 141b at the other rear. A plurality of locking levers 141 in which 141c is formed; One side rear is in contact with the other front of the locking lever 141, the front projection 143b is formed in the one front, the rotary shaft guide portion 143a mounted to the second rotary shaft 147 is located in the center region. A plurality of interlocking levers 143 formed on the other side and provided with a tray selection protrusion 142 protruding from the other front; The main body 149a1 is fastened to the main plate 145, and a plurality of extension parts 149a2 extending to the main body 149a1 are in contact with the front protrusion 141e of each of the levers 141. Member 149a; The main body 149b1 is fastened to the main plate 145, and a plurality of extension parts 149b2 extending to the main body 149b1 contact the front protrusion 143b of each of the interlocking levers 143. Disc reproducing apparatus provided with a multi-changer, characterized in that composed of two elastic members (149b). The method of claim 4, wherein The mainframe 100, Windows 101 and 103 spaced apart from each other are formed on the outer surface of the area where the disk trays are stacked. The tray selection protrusions 142 of the interlocking levers 143 are inserted into the one window 101, and the locking protrusions 141a of the locking levers 141 are inserted into the other window 103. A disc reproducing apparatus provided with a multi-changer, wherein the disc is inserted. The method of claim 4, wherein The tray selection module 150, Is fastened to the rear of the tray fixing and release module 140, Pressing the second rear protrusion 141c of the lock lever 141 on the tray selection module 150 to release the locking protrusion 141a of the lock lever 141 from the locking groove of the tray. The protrusions 151 protrude from the plate-shaped lock lever operation prohibiting plate 155 and are formed in an area spaced vertically. Disc-removing device having a multi-changer, characterized in that the unlocked state moving groove 153 and the locked state moving groove 152 of the same length are formed on the left and right horizontal lines of the unlocking protrusions 151. .