JP2004087013A - Disk reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk reproducing device in which a disk cartridge can be surely positioned and a manufacturing cost can be reduced. <P>SOLUTION: A lever member 2 is pivoted at the side plane of a chassis 1 fixed to a main body part 30, a first shaft part 3 provided at one end of the lever member 2 is energized upward by an energizing means 9 and a second shaft part 4 is provided at the other end. When an upper cover 40 is opened, the first shaft part 3 is elevated by energizing force and at the second shaft part 4 is lowered, when the disc cartridge 2 is loaded and the upper cover 40 is closed, the first shaft part 3 is lowered by being pushed by the disk cartridge 2, while the second shaft part 4 is elevated, and the disk cartridge 2 is positioned. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disc reproducing apparatus for reproducing recorded information of a disc stored in a disc cartridge.
[0002]
[Prior art]
FIG. 20 is a perspective view showing a conventional disk reproducing apparatus for reproducing recorded information by mounting a disk cartridge containing a disk such as an MD or MO. An upper cover 140 is pivotally supported by the main body 130 of the disc reproducing device 150, and the upper cover 140 is turned in the AB direction so that the upper surface can be opened and closed.
[0003]
A chassis 101 is fixed to the main body 130, and an optical pickup 106 for reading recorded information is attached to the chassis 101 so as to be movable in the radial direction of the disk 21. On the upper surface of the chassis 101, first and second shaft portions 101a and 101b arranged front and rear are provided to protrude upward.
[0004]
The first and second shaft portions 101a and 101b are fitted into first and second holes 20a and 20b formed in the disc cartridge 20 to position the disc cartridge 20. A lock member 131 is provided on the front side of the main body 130. The lock member 131 is integrated with the eject button 132 and is movable in the left-right direction.
[0005]
Further, a holder 110 that pivots integrally with the upper lid 140 is pivotally supported on the chassis 101. The holder 110 holds the disk cartridge 20, and the disk cartridge 20 is transported between the mounting position and the reproduction position by opening and closing the upper cover 140. Further, a lock piece 141 is provided on the front surface of the upper lid 140. The lock piece 141 is engaged with the lock member 131 to lock the closed state of the upper lid 140.
[0006]
In the disk reproducing device 150 having the above-described configuration, when the eject button 132 is moved in the direction C, the engagement between the lock piece 141 and the lock member 131 is released. As a result, the upper lid 140 rotates in the direction of arrow A, and the upper lid 140 is opened, as shown in FIG. 21, so that the disc cartridge 20 can be inserted into the holder 110.
[0007]
When the disc cartridge 20 is inserted to a predetermined position and the upper cover 140 is rotated in the direction of arrow B, the upper cover 140 is closed as shown in FIG. At this time, the lock piece 141 and the lock member 131 are engaged to lock the upper lid 140. Also, the first and second shaft portions 101a and 101b are fitted into the first and second holes 20a and 20b of the disk cartridge 20, and the disk cartridge 20 is positioned. Then, the spindle motor 105 is fitted into the hole 21a of the disk 21 to drive the disk 21 to rotate.
[0008]
When the eject button 132 is slid from the state shown in FIG. 22, the engagement between the lock piece 141 and the lock member 131 is released. As a result, the upper cover 140 is rotated in the direction of arrow A, and when the upper cover 140 is disposed at a predetermined rotation angle, a discharge mechanism (not shown) provided at the rear of the main body 130 operates to remove the disc cartridge 20. Push forward. Thereby, the disk cartridge 20 can be taken out.
[0009]
[Problems to be solved by the invention]
However, according to the above-described conventional disc reproducing apparatus, the disc cartridge 20 is inserted into the inclined holder 110, and thus the rear second shaft portion 101b is formed low to prevent interference with the disc cartridge 20. As a result, when the upper cover 140 is closed, the disk cartridge 20 cannot be positioned reliably, and there is a risk that the spindle motor 105 will collide with the disk 21 and damage the disk 21.
[0010]
In addition, if the ejection mechanism is pushed early when the disc cartridge 20 is ejected, the disc cartridge 20 may collide with the lock member 131. On the other hand, if the extrusion timing is late, the ejection mechanism may not operate even if the upper lid 140 is opened to the maximum rotation angle. For this reason, it is necessary to increase the component accuracy and the assembly accuracy of the ejection mechanism, and there is a problem that the cost of the disk reproducing device 150 increases.
[0011]
In order to solve these problems, a configuration in which the rotation angle when the upper lid 140 is opened may be increased. According to this configuration, it is possible to increase the height of the second shaft portion 101b, and to avoid collision between the disk cartridge 20 and the engaging member 131 even if the accuracy of parts and assembly of the ejection mechanism is low.
[0012]
However, if the rotation angle of the upper lid 140 is increased, the interior can be easily visually recognized when the upper lid 140 is opened, and thus there is a problem that the appearance is impaired. Further, as shown in FIG. 23, there is a risk that the optical pickup 106 and the like may be damaged by erroneously inserting the disk cartridge 20 below the holder 110. Therefore, the above problem cannot be solved by increasing the rotation angle of the upper lid 140.
[0013]
SUMMARY OF THE INVENTION An object of the present invention is to provide a disk reproducing apparatus capable of reliably positioning a disk cartridge. Another object of the present invention is to provide a disk reproducing apparatus capable of reducing the manufacturing cost.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the present invention reads disk information by mounting a disk cartridge having first and second holes provided before and after in an insertion direction by opening and closing an upper lid pivotally supported by a main body. In the disc reproducing apparatus, a holder that rotates together with the upper lid and holds a disc cartridge, and first and second positions that respectively fit the first and second holes to position the disc cartridge when the upper lid is closed. A shaft portion, wherein the second shaft portion is lowered when the upper lid is opened, and the second shaft portion is raised when the disk cartridge is mounted on the holder and the upper lid is closed. .
[0015]
According to this configuration, the upper lid is opened and the disc cartridge is inserted into the holder. At this time, the second shaft part descends and retreats from the path of the disk cartridge. When the upper lid is closed, the holder rotates and the disc cartridge is arranged at a predetermined position. At this time, the first shaft portion is fitted into the first hole portion of the disk cartridge, and the second shaft portion is raised and fitted into the second hole portion of the disk cartridge. Thus, the disc cartridge is positioned, and the disc is reproduced.
[0016]
Further, the present invention is characterized in that the first shaft rises when the upper lid is opened, and the first shaft lowers when the disk cartridge is mounted on the holder and the upper lid is closed. According to this configuration, when the upper lid is opened, the first shaft portion rises, and erroneous insertion of the disk cartridge below the holder is prevented.
[0017]
Further, when the first shaft portion rises above the lock member protruding upward on the front surface, even if the rear end of the disc cartridge is pressed by the ejection mechanism when the rotation angle of the upper lid is small, the first hole portion and the first hole portion are moved upward. The disk cartridge is held by the engagement of the single shaft portion, and collision between the lock member and the disk cartridge is prevented.
[0018]
The first and second shafts that move up and down are arranged at both ends of a lever member pivotally supported on the side surface of the chassis, and can be realized by urging the first shaft upward. When the disc cartridge is mounted, the bottom surface of the first hole of the disc cartridge comes into contact with the first shaft, and the first shaft descends and the second shaft rises against the urging force. Further, when the first shaft portion is inserted into the guide hole provided in the chassis to engage the lever member with the first shaft portion, the first shaft portion can be moved straight by the guide of the guide hole.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a disk reproducing apparatus according to the first embodiment. In the disc reproducing apparatus 50, the upper lid 40 is pivotally supported by the main body 30, and the upper lid 40 is turned in the AB direction so that the upper surface can be opened and closed. When the disc cartridge 20 accommodating the disc 21 is inserted into the holder 10 that rotates integrally with the upper cover 40 and the upper cover 40 is closed, the disc cartridge 20 is held by the holder 10 and mounted on the disc reproducing device 50. ing.
[0020]
FIG. 2 is an exploded perspective view of the disk reproducing device 50. Support plates 30c are provided upright on both sides in the left-right direction at the rear of the main body 30 formed in a box shape having an open upper surface. The support plate 30c is provided with pivot shafts 30a, 30b protruding laterally. A lock member 31 urged leftward by a tension spring 33 is provided on the front surface of the main body 30. The lock member 31 is integrated with an eject button 32 provided on the outer surface side, and is movable in the left-right direction.
[0021]
Shaft holes 40a, 40b are formed on both sides of the upper lid 40, which is formed in a box shape with an open lower surface, to be fitted to the pivots 30a, 30b. As a result, the upper lid 40 is rotated to open and close the disk reproducing device 50. A lock piece 41 that can be engaged with the lock member 31 is attached to the front surface of the upper lid 40. The closed state of the upper lid 40 is locked by the engagement between the lock member 31 and the lock piece 41.
[0022]
The chassis 1 made of sheet metal is fixed to the main body 30 by screws (not shown) or the like. Pivot portions 1j and 1k are erected at both rear portions of the chassis 1 by bending, and pivot portions 1j and 1k are provided with pivot shafts 1b and 1c protruding laterally. A cam groove 1d is formed in one pivot portion 1k so as to be inclined rearward as going upward.
[0023]
A spindle motor 5 is mounted substantially at the center of the chassis 1. The spindle motor 5 is fitted in a hole 21a (see FIG. 1) provided at the center of the disk 21, and holds and rotates the disk 21. On the side of the spindle motor 5, an optical pickup 6 for reading information recorded on the disk 21 is arranged. The optical pickup 6 has one side inserted through the guide shaft 7 and the other side engaged with the guide portion 8. Thus, the optical pickup 6 can move in the radial direction of the disk 21.
[0024]
Protrusions 1e, 1f, 1g, and 1h are provided at four places on the upper surface of the chassis 1. The protrusions 1e, 1f, 1g, and 1h abut on the disk cartridge 20 mounted on the disk reproducing device 50 to position the disk cartridge 20 in the height direction.
[0025]
The right protrusions 1e, 1f are provided with through holes 1m, 1n (see FIG. 7), and the first and second shaft portions 3, 4 are inserted through the through holes 1m, 1n. On one side surface of the chassis 1, a lever member 2 pivotally supported by a support shaft 1a is provided. Both ends of the lever member 2 are extended to the rear surface side of the chassis 1 by bending, and a second shaft portion 4 is integrally provided at one end.
[0026]
The opposite end of the second shaft portion 4 with respect to the support shaft 1a is notched as shown in FIG. 3 to form a groove 2a. The groove 2 a is engaged with an engagement groove 3 a formed on the peripheral surface of the first shaft 3 and can move integrally with the first shaft 3. As a result, the lever member 2 rotates about the support shaft 1a, and the first and second shaft portions 3, 4 can move up and down like a seesaw. A leaf spring (biasing means) 9 is attached to the rear surface of the chassis 1. The open end of the leaf spring 9 presses the bottom surface of the first shaft portion 3 to urge the first shaft portion 3 upward.
[0027]
The holder 10 is formed by sheet metal working, and the pivot shafts 1b and 1c of the chassis 1 are fitted into shaft holes 10a and 10b provided on both side surfaces so as to be rotatable. Further, the holder 10 is integrated with the upper lid 40 by a holding mechanism (not shown), and is integrally rotated at a different rotation angle from the upper lid 40.
[0028]
The holder 10 is provided with holding portions 10b with both side portions bent toward the back side. The disk cartridge 20 is held by the holding portion 10b, and the disk cartridge 20 rotates together with the holder 10 and is mounted on the protrusions 1e, 1f, 1g, and 1h of the chassis 1.
[0029]
A discharge mechanism 15 is provided at the rear of the holder 10. 4 and 5 are a side view and a top view showing details of the discharge mechanism 15. The discharge mechanism 15 has a rotating plate 11, a slide plate 12, and a tension spring 13. The rotating plate 11 is rotatably mounted on a rotating shaft 10c provided on the upper surface of the holder 10. The rotating plate 11 has a claw 11c protruding upward, and a tension spring 13 is hooked between the claw 11e and the claw 10e provided on the upper surface of the holder 10. Thereby, the rotating plate 11 is urged clockwise as viewed from above.
[0030]
An abutting portion 11b with which the disk cartridge 20 abuts is formed on the lower surface side of the tip of the rotating plate 11. A lever portion 11d having an open end extends from the rear portion of the rotating plate 11. A hook 11a protruding forward is formed at the tip of the lever 11d, and the hook 11a is resiliently deformable in a direction perpendicular to the direction in which the lever 11d extends so that the hook 11a can swing. Further, a claw portion 10d that can be engaged with the hook 11a is formed on the rear surface of the holder 10.
[0031]
The slide plate 12 has an L-shaped cross section, and the side surface is disposed between the pivot 1k of the chassis 1 and the holder 10. A guide groove 12c is formed on the side surface of the slide plate 12. A guide protrusion 10e provided on the holder 10 is engaged with the guide groove 12c, and the slide plate 12 is slidable in the front-back direction along the holder 10 by the guide of the guide protrusion 10e.
[0032]
A cam projection 12 b is provided behind the guide groove 12. The cam projection 12b is engaged with the cam groove 1d of the chassis 1, and when the holder 10 is rotated around the pivot shaft 1c and opened, the cam projection 12b is guided by the cam groove 1d and the slide plate 12 moves rearward. It has become. On the upper surface side of the slide plate 12, a lock release piece 12a extends rearward. The unlocking piece 12a is open at the tip and is elastically deformable in a direction perpendicular to the direction in which it extends.
[0033]
In the disc reproducing device 50 having the above configuration, when the eject button 32 is moved in the direction C, the engagement between the lock piece 41 and the lock member 31 is released. Thereby, the upper lid 40 is rotated and opened in the direction of arrow A, and the disc cartridge 20 can be inserted into the holder 10.
[0034]
6 to 9 are a left side view, a top view, a right side view, and a front view showing a state where the disk cartridge 20 has begun to be inserted. The rotation angle of the upper lid 40 is regulated so as to form a gap through which the disc cartridge 20 can pass between the lock piece 41 and the lock member 31, and the insertion-side surface of the holder 10 faces the gap. Be placed.
[0035]
The first shaft portion 3 protrudes upward by the urging force of the leaf spring 9, and its tip approaches the holder 10 and is disposed above the lock member 31. Accordingly, the lever member 2 is inclined, and the second shaft portion 4 is retracted below the chassis 1. Thereby, the disk cartridge 20 can be inserted into the holder 10 without interference between the disk cartridge 20 and the second shaft portion 4.
[0036]
Detailed side and top views of the discharge mechanism 15 are shown in FIGS. The cam projection 12b of the slide member 12 is guided rearward by the cam groove 1d of the chassis 1 as the holder 10 rotates. As a result, the slide member slides rearward, and the unlocking piece 12a is disposed rearward of the claw 10d of the holder 10.
[0037]
When the disc cartridge 20 is further inserted, the disc cartridge 20 comes into contact with the contact portion 11b of the turning plate 11, and the turning plate 11 turns against the urging force of the tension spring 13. When the disk cartridge 20 is inserted to a predetermined position, as shown in FIGS. 12 and 13, the tip of the lever portion 11d of the rotating plate 11 presses the unlocking piece 12a to elastically deform. Then, the hook 11a of the lever portion 11d is engaged with the claw portion 10d of the holder 10, and the rotating plate 11 is locked.
[0038]
Next, when the upper lid 40 is closed, the disk cartridge 20 rotates while being held by the holder 10. Thereby, the disk cartridge 20 is placed on the protrusions 1e, 1f, 1g, and 1h of the chassis 1. 14 to 17 are a left side view, a top view, a right side view, and a front view showing this state.
[0039]
The lock member 31 is engaged with the lock piece 41 to lock the closed state of the upper lid 40. The first shaft portion 3 fits into the first hole portion 20a of the disc cartridge 20, is pressed by the bottom surface of the first hole portion 20a, and descends against the urging force of the leaf spring 9. As a result, the lever member 2 rotates and the second shaft portion 4 rises, and fits into the second hole portion 20b of the disc cartridge 20. Thereby, the surface direction of the disk cartridge 20 is positioned.
[0040]
Also, as shown in FIGS. 18 and 19, the cam projection 12b is guided by the cam groove 1d of the chassis 1 by the rotation of the upper lid 40, and the slide member 12 slides forward. Thereby, the unlocking piece 12a of the slide member 12 retreats from the lever 11d of the rotating member 11.
[0041]
When the eject button 32 is operated while the disc cartridge 20 is mounted to release the engagement between the lock piece 41 and the lock member 31, the upper lid 40 can be opened. When the upper cover 40 is opened, the slide member 12 slides backward by being guided by the cam groove 1d of the chassis 1. As a result, the tip of the unlocking piece 12a presses the tip of the lever 11d of the rotating member 11, and the engagement between the claw 10d of the holder 10 and the hook 11a is released.
[0042]
As a result, the lock of the rotating member 11 is released, and the rotating plate 11 is rotated by the tension spring 13. The contact portion 11b presses the rear surface of the disk cartridge 20 by the rotation of the rotation plate 11, so that the disk cartridge 20 is ejected from the holder 10. Thereby, the disk cartridge 20 can be taken out.
[0043]
According to the present embodiment, when the upper lid 40 is opened and the disc cartridge 20 is inserted, the second shaft portion 4 descends to prevent interference with the disc cartridge 20. In addition, when the disc cartridge 20 is mounted and the upper lid 40 is closed, the second shaft 4 rises and fits into the second hole 20b, so that the height of the second shaft 4 can be increased. The disk cartridge 20 can be reliably positioned.
[0044]
When the upper lid 40 is opened and the disc cartridge 20 is inserted, the first shaft portion 3 rises to the vicinity of the holder 10. Therefore, when the upper lid 40 is closed, the disc cartridge 20 rotates together with the holder 10 and the first The hole 20a and the first shaft 3 are fitted. Thus, the disk cartridge 20 can be reliably mounted at a predetermined position. Further, since the disc cartridge 20 is not erroneously inserted below the holder 10 due to being blocked by the first shaft portion 3, it is possible to prevent the optical pickup 6 from being damaged.
[0045]
Further, since the first shaft portion 3 rises above the lock member 31 when the upper cover 40 is opened, the discharge timing by the discharge mechanism 15 when the upper cover 40 is opened with the disc cartridge 20 mounted is earlier. However, the first shaft portion 3 and the first hole portion 20a are engaged with each other, so that the disc cartridge 20 is not ejected.
[0046]
Thereby, even if the component accuracy and the assembly accuracy of the ejection mechanism 15 are low, the collision between the disk cartridge 20 and the lock member 31 can be prevented, and the rotation angle of the upper lid 40 can be reduced. Accordingly, it is possible to prevent the erroneous insertion of the disk cartridge 20 and make it difficult to visually recognize the inside of the disk reproducing device, thereby reducing the manufacturing cost of the disk reproducing device 50 without deteriorating the appearance.
[0047]
In addition, since the first shaft portion 3 is not formed integrally with the lever member 2 and the lever member 2 is moved up and down by engagement, the first shaft portion 3 is guided by the through hole (guide hole) 1m provided in the projection 1e of the chassis 1 to guide the first shaft portion 3. The shaft 3 can be moved straight. Accordingly, since the first hole 20a farther from the pivots 1b and 1c moves substantially linearly by the rotation of the holder 10, the displacement between the raised first shaft 3 and the first hole 20a is reduced. As a result, the first shaft portion 3 can be securely fitted into the first hole portion 20a.
[0048]
【The invention's effect】
According to the present invention, when the upper lid is opened and the disc cartridge is inserted, the second shaft portion is lowered to prevent interference with the disc cartridge. In addition, when the disk cartridge is mounted and the upper lid is closed, the second shaft rises and fits into the second hole, so that the height of the second shaft is increased to position the disk cartridge more reliably. Can be.
[0049]
When the upper lid is opened and the disc cartridge is inserted, the first shaft rises, so that when the upper lid is closed, the disc cartridge rotates and the first hole and the first shaft fit early. Thereby, the disk cartridge can be reliably mounted at the predetermined position. Further, since the disc cartridge is not erroneously inserted below the holder due to being blocked by the first shaft portion, it is possible to prevent the optical pickup from being damaged.
[0050]
Also, when the upper lid is opened, the first shaft rises to a position above the lock member, so that when the upper cover is opened with the disk cartridge mounted, the first shaft is discharged even when the ejection timing is earlier. And the first hole are engaged, and the disc cartridge is not ejected.
[0051]
This makes it possible to prevent the collision between the disk cartridge and the lock member and to reduce the rotation angle of the upper lid even if the component accuracy and the assembly accuracy of the ejection mechanism are low. Therefore, it is possible to prevent erroneous insertion of the disk cartridge and to reduce the manufacturing cost of the disk reproducing apparatus without making it difficult to visually recognize the inside of the disk reproducing apparatus and deteriorating the appearance.
[0052]
Further, since the first shaft portion is not formed integrally with the lever member and the lever member is moved up and down by engagement, the first shaft portion can be moved straight by the guide of the guide hole provided in the chassis. Therefore, since the first hole portion far from the pivot shaft moves substantially linearly by the rotation of the holder, the positional displacement between the raised first shaft portion and the first hole portion is reduced to ensure the first shaft portion. Can be fitted into the first hole.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a disk reproducing apparatus according to an embodiment of the present invention; FIG. 2 is an exploded perspective view showing a disk reproducing apparatus according to an embodiment of the present invention; FIG. FIG. 4 is a top view showing an engaged state of a single shaft portion and a lever member. FIG. 4 is a side view showing a discharge mechanism of the disk reproducing apparatus according to the embodiment of the present invention. FIG. 5 is a discharge mechanism of the disk reproducing apparatus according to the embodiment of the present invention. FIG. 6 is a left side view showing a disc reproducing apparatus according to an embodiment of the present invention. FIG. 7 is a top view showing a disc reproducing apparatus according to an embodiment of the present invention. FIG. 8 is a disc according to an embodiment of the present invention. FIG. 9 is a front view showing a disc reproducing apparatus according to an embodiment of the present invention. FIG. 10 is a side view showing a state in which an upper cover of an ejection mechanism of the disc reproducing apparatus according to the embodiment of the present invention is opened. FIG. 11 shows a disc according to an embodiment of the present invention. FIG. 12 is a top view showing a state in which an upper cover of a discharge mechanism of a raw device is opened. FIG. 12 is a side view showing a state in which a disk cartridge is inserted in a discharge mechanism of a disk reproducing apparatus according to an embodiment of the present invention. FIG. 14 is a top view showing a state in which a disc cartridge of an ejection mechanism of the disc reproducing apparatus according to the embodiment is inserted. FIG. 14 is a left side view showing a state in which a disc cartridge is inserted in the disc reproducing apparatus according to the embodiment of the present invention. FIG. 16 is a top view showing a state in which the disk cartridge of the disk reproducing apparatus according to the embodiment is inserted; FIG. 16 is a right side view showing a state in which the disk cartridge is inserted in the disk reproducing apparatus according to the embodiment of the present invention; FIG. 18 is a front view showing a state in which the disk cartridge of the disk reproducing apparatus according to the embodiment is inserted; FIG. 19 is a side view showing a state in which a disc cartridge of the ejection mechanism is mounted. FIG. 19 is a top view showing a state in which a disc cartridge of the ejection mechanism of the disc reproduction apparatus according to the embodiment of the present invention is mounted. FIG. FIG. 21 is a side view showing a state where a disk cartridge of a conventional disk reproducing apparatus is inserted. FIG. 22 is a side view showing a state where a disk cartridge of a conventional disk reproducing apparatus is mounted. FIG. Diagram for explaining the problem of the disc reproducing apparatus
DESCRIPTION OF SYMBOLS 1, 101 Chassis 1m, 1n Through-hole 2 Lever member 3, 101a First shaft part 4, 101b Second shaft part 5, 105 Spindle motor 6, 106 Optical pickup 9 Leaf spring 10, 110 Holder 11 Rotating member 12 Slide member 13 Tension Spring 15 Ejection Mechanism 20 Disk Cartridge 20a First Hole 20b Second Hole 21 Disk 30, 130 Main Body 31, 131 Lock Member 32, 132 Eject Button 40, 140 Top Lid 41, 141 Lock Piece 50, 150 Disk Playback apparatus

Claims (7)

By opening and closing the upper lid pivotally supported by the main body, in a disk reproducing apparatus for reading disk information by mounting a disk cartridge having first and second holes provided before and after in the insertion direction, the disk player rotates together with the upper lid. And a first and a second shaft portion for fitting the first and second holes to position the disc cartridge when the upper cover is closed, respectively, wherein the upper cover is opened. The disc reproducing apparatus according to claim 1, wherein the second shaft portion moves down when the disc cartridge is mounted on the holder and the upper lid is closed. By opening and closing the upper lid pivotally supported by the main body, in a disk reproducing apparatus for reading disk information by mounting a disk cartridge having first and second holes provided before and after in the insertion direction, the disk player rotates together with the upper lid. And a first and a second shaft portion for fitting the first and second holes to position the disc cartridge when the upper cover is closed, respectively, wherein the upper cover is opened. Wherein the first shaft portion rises, and the first shaft portion descends when the disk cartridge is mounted on the holder and the upper lid is closed. 3. The second shaft part according to claim 2, wherein the second shaft part descends when the upper lid is opened, and rises when the disk cartridge is mounted on the holder and the upper lid is closed. Disc playback device. A lock member is formed on the front surface of the main body portion so as to protrude upward, and is engaged with the upper lid to lock a closed state of the upper lid. 4. The disc reproducing apparatus according to claim 2, wherein the disc reproducing apparatus protrudes upward. 5. The disk reproducing apparatus according to claim 4, further comprising a discharge mechanism for pressing and discharging a rear end of the disk cartridge when the upper lid is opened. A chassis pivotally supporting the holder and fixed to the main body; a lever member pivotally supported on a side surface of the chassis and having first and second shaft portions attached to both sides of a pivot shaft; 6. The disc reproducing apparatus according to claim 1, further comprising: urging means for urging the portion upward. 7. The disk reproducing apparatus according to claim 6, wherein a guide hole into which the first shaft portion is inserted is provided in the chassis, and the first shaft portion engages with the lever member to rotate the lever member. apparatus.

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