JPH05250791A - Reproducing apparatus for disk and operating method thereof - Google Patents

Abstract

PURPOSE:To make it possible to use one motor for both a tray hook drive motor and an OPEN/CLOSE motor by adopting a clutch gear. CONSTITUTION:A reproducing apparatus for a disk is equipped with a pinion 23 related to movement of a tray hook, a pinion 37 related to movement of a drawer of a manual part, a clutch gear 24 coupled selectively with the pinions 23 and 37 changed over by an elevating operation of an elevator, and a motor 28 driving this gear 24. The power of the motor 28 is transmitted to the gear 24 through a worm 29, a wheel 30 and a back height gear 31 and drives the pinion 23 when the gear 24 is at a high position, while driving the pinion 37 through a small gear 27, a large gear 32, a pulley 33, a belt 34, a pulley 35, a cam gear 36, etc., when the gear 24 is at a low position. The pinion 37 engages with a rack 38 of the drawer and conducts an operation of OPEN/ CLOSE of the drawer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus for a CD (compact disc) or the like.

[0002]

2. Description of the Related Art With the spread of disk reproducing devices, the functions have been diversified, and a drawer-shaped drawer protrudes by pressing the OPEN / CLOSE button, and the drawer is of a drawer type in which the disk is manually set in the tray inside the drawer. There is also a magazine system in which a magazine case in which a plurality of discs are stored in advance is attached to a disc reproducing device, and trays are drawn out one by one from the magazine case.

Further, there has already been provided one in which a magazine system and the above-mentioned drawer system are incorporated in one disk reproducing device (this system is called "combined magazine / manual insertion system" for convenience).

FIG. 15 is an internal plan view of a conventional magazine / manual insertion combined-type reproducing apparatus, FIG. 16 is a side view of the same, and FIG. 17 is an explanatory view of a drive section of the apparatus. Note that the drawings are to be viewed in the direction of reference numerals (the same applies hereinafter).

Conventional magazine remanufacturing device 10 with combined manual insertion
To briefly explain the configuration of No. 0, as shown in FIG. 16, the magazine storage unit 103 is arranged on the manual insertion unit 102 mainly including the drawer 101 similar to the drawer of the desk, and behind them (on the left side of the drawing). The elevator 104 is arranged.

The elevator 104 moves up and down by the forward and reverse rotations of the vertical screw 105 shown in the upper center of FIG. In FIG. 15, 106 is a lock claw of the magazine case MC (see FIG. 16) stored in the magazine storage unit 103,
Reference numeral 107 denotes a solenoid for opening / closing the lock claw 106,
108 is a tray hook.

Next, the operation will be described. A magazine case MC having a stack of about 6 trays T ... The tray T is a thin rectangular plate on which the discs are placed, which can be moved horizontally in the magazine case MC, and the desired discs are placed one by one on the trays T.

For example, when the top disc of the magazine case MC is selected, the elevator motor 1 shown in FIG.
09 starts and rotates the screw 106 via the gear 110 to move the elevator 104 in FIG. 16 to a predetermined height.

Next, the tray hook 108 in FIG. 15 moves from the right to the left in the drawing to pull out the tray T onto the elevator 104. This movement is performed by the following procedure.

A tray hook drive motor 11 shown in FIG.
1 starts, and the pinion 113 is rotated via the gear train 112. The pinion 113 moves the rack 114 horizontally,
The tray hook 1 fitted to the rack 114 so as to be able to move up and down through the pillar 115 of FIG.
08 is moved horizontally. Therefore, the tray hook 108 moves up and down on the upper surface of the elevator 104 while being in contact with the tray T.

The elevator 104 descends to the lowest level, where after the reproduction of the disc is carried out, it is re-elevated to the original position. Then, the tray hook 108 returns the tray T to the original position of the magazine case MC, thereby completing one cycle.

The magazine case MC includes a solenoid 107.
(Fig. 15) opens the lock claw 106,
It is ejected by a payout spring (not shown) built in the magazine storage unit 103.

Next, the level position control and power failure countermeasures not mentioned in the above description will be described.

FIG. 18 is a view (principle diagram) viewed from the arrow 18 in FIG. 15, in which a slit plate 117 is fixedly installed at one corner of the elevator 104, and a sensor 119 monitors holes 118 ... Vertical slit plate 1
I'm watching 17. 121 is a level reference limit switch. Therefore, the slit plate 117 kicks the origin limit switch 121 to provide a level reference. After that, the designated hole 11 of the slit plate 117 that rises
8 is detected by the sensor 119, the elevator motor 109 (FIG. 17) is stopped via the microcomputer 120.

The above is the principle of the level position control. However, when the power supply is turned off due to a power failure or the like, the memory of the microcomputer 120 disappears, and as a result, the disc being played cannot be returned to the magazine case MC. is there.

FIG. 19 is a view (principle diagram) viewed from the arrow 19 in FIG. 15, in which the mechanical level memory means formed by fitting the slider 124 with the limit switch 123 to the saw-tooth plate 122 erected on the chassis at the time of power failure. It is attached as a measure.

The slider 124 meshes with the sawtooth plate 122 at the level of the tray just before and stands by in accordance with the principle described later. When the memory is lost due to a power failure or the like, the elevator 104 is first raised and stopped when the limit switch 123 is turned on at the position shown by the arrow in FIG. Alternatively, after turning on the limit switch 123, the sensor 1
It is also possible to stop the elevator 104 when 19 detects. This confirms the level immediately after the power failure.

At this level, the tray hook 108 (see FIG. 1)
The tray T is returned to the magazine case MC in 5), but at this time, the tray hook 108 or its accessory is the slider 1
The lock of 24 is released (the claw 124a is disengaged from the saw teeth by the operation of the arrow). When the tray hook 108 moves up and down at the right end of the drawing, the tray hook 108 moves up and down integrally because the tray hook 108 meshes with the slider 124, and the tray hook 108 moves to the left in the drawing (the tray T moves to the elevator 104). (Moved to pull out to)
4 is locked and held by the sawtooth plate 122.

Next, the operation of the manual feed portion 102 will be described. Figure 1
When the disk CD is placed on the tray in the drawer 101 (arrow) which is pulled out at 6 (arrow) and the CLOSE button is pressed,
The OPEN / CLOSE motor 125 of FIG. 17 starts,
The rack 12 below the drawer 101 via the gear group 126
By horizontally moving 7, the drawer 101 is moved to the push-in position.

The operation of aligning the elevator 104 with the level of the drawer 101, pulling out the tray with the tray hook 108, and reproducing the disc is the same as described above.

[0021]

The conventional disc reproducing apparatus 100 described above has an elevator motor 1 as shown in FIG.
09, tray hook movement motor 111 and OPEN / C
Three motors, the LOSE motor 125, are required, and in addition to this, the solenoid 107 (FIG. 15) for ejecting the magazine case MC and the limit switch 123 (FIG. 19) for power failure countermeasures are required.

However, in recent years, there has been a demand for reduction in the number of parts as the size of the disk reproducing apparatus has been reduced, and an object of the present invention is to integrate the above-mentioned electric parts and reduce the manufacturing cost of the disk reproducing apparatus.

[0023]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a disc reproducing apparatus including a first pinion for moving a tray hook, a second pinion for moving a drawer of a manual feed section, and an elevator. It is characterized in that it is provided with a clutch gear which is switched by ascending and descending movement and is selectively connected to the first pinion and the second pinion, and a motor which drives this clutch gear.

Alternatively, in the disc reproducing apparatus, a slide cam provided with a stepped cam groove for raising and lowering an elevator and a tray hook are integrated with the chassis when the tray hook is located in the vicinity of the magazine storage portion, and the tray hook is played. A slider that moves integrally with the slide cam away from the chassis when moved to a position near the position; and switch means that is provided on the chassis and that is operated by the slider that is moved immediately after the power failure is restored. To do.

[0025]

By using the clutch gear, the tray hook drive motor and the OPEN / CLOSE motor can be combined into one motor.

Further, by adopting a slider which is integral with the chassis or integral with the slide cam in accordance with the position of the tray hook, the slide cam can be returned to the position corresponding to the selected tray, and thus the control system Even if the position memory is lost, the return operation is smoothly performed.

Further, after the tray is collected in the magazine case, the slide cam is reciprocally moved back and forth around the specified position, so that the slider can be guided to a position suitable for being integrated with the chassis, and thus the slider is engaged. Malfunctions can be prevented.

[0028]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an internal plan view of a disc reproducing apparatus according to the present invention, FIG. 2 is a side view of the same, and FIG. 3 is an explanatory view of the same driving section.
The disc reproducing device 1 is a combined magazine / manual insertion type device similar to the disc reproducing device 100 described in the section of the prior art, and is a magazine storage part 2 and a manual insertion part 3 below it.
, An elevator 4, and a triangular slide cam 10.

The slide cam 10 has a stepwise cam groove 11 formed along the oblique side thereof.
A pin 4a protruding from the elevator 4 is fitted in the.
Therefore, the elevator 4 gradually rises as the slide cam 10 horizontally moves to the left in the figure.

A long rack 12 is cut on the lower rear surface of the slide cam 10, and the rack 12 has a third rack at the lower left of FIG.
The pinion 20 meshes. The third pinion 20 is normally and reversely rotated by the second motor 22 via the gear group 21.

In FIG. 1, 5 is a tray hook,
The tray hook 5 is fitted on the column 6 so as to be vertically movable. The support column 6 has an L shape in a side view with a support rack 8 that extends horizontally horizontally below a long spring 7 (not shown because it is below the spring 7 and the like, but see FIG. 11 described later). 8 is driven by the first pinion 23 in FIG.

FIG. 4 is a sectional view taken along line 4-4 of FIG.
The pinion 23 meshes with the clutch gear 24. The clutch gear 24 is rotatably supported by a headed pin 25,
It is constantly urged upward by the spring 26. The clutch gear 24 is configured to descend when pushed by the elevator 4 shown by an imaginary line, disengage from the second pinion 23, and mesh with the right small gear 27.

As shown in FIG. 3, the power of the first motor 28 is transmitted to the clutch gear 24 via the worm 29, the wheel 30, and the height gear 31, and when the clutch gear 24 is in the high position, the first pinion 23 is used. When the clutch gear 24 is in the low position, the second pinion 37 is driven via the small gear 27, the large gear 32, the pulley 33, the belt 34, the pulley 35, the cam gear 36 and the like.

The second pinion 37 is a drawer rack 38.
Mate and make a drawer open / close.

Comparing FIG. 17 according to the prior art with FIG. 3, it can be seen that the three motors 109, 111, 125 are replaced with two motors 22, 28, and the number of motors is reduced.

With the above construction, for example, when the uppermost disc of the magazine case MC is selected, the slide cam 10 in FIG. 2 moves from right to left in the figure to hold the elevator 4 at a predetermined position. Tray hook 5 in Figure 1
The tray is pulled out with the slide cam 10 shown in FIG.
By returning to the position of, the elevator 4 reaches the play position, and the reproduction operation is performed here. After reproduction, the trays are returned to the original magazine case in the reverse order.

The level position control and power failure countermeasures not mentioned in the above description of operation will be described below.

FIG. 5 is a rear view of the front portion of the slide cam according to the present invention. Although the overall structure of the slide cam 10 will be described later with reference to FIG. 7, a spring 50 is provided at the front portion of the slide cam 10.
The first slider 51 is fitted so as to be slidable in the direction of the arrow via.

The ridge 51a of the first slider 51 pushes the first switch 52 on the chassis side as the first slider 51 moves a certain distance in the direction of the arrow. In the figure, 51b is an arm.

FIGS. 6 (a) and 6 (b) are operation views of the first slider of the present invention, and the first slider 51 is characterized by different operations depending on the position of the column 6. For the sake of convenience, the right side of the figure is called the front and the left side of the figure is called the rear.

FIG. 6A shows the case where the support column 6 is located at the front or in the middle. In this case, when the slide cam 10 moves forward, the protrusion 51a of the first slider 51 pushes the first switch 52. The pressed first switch 52 outputs a level reset signal, that is, a level reference signal.

FIG. 6B shows the case where the support column 6 is at the rear side, and in this case, the stopper member S1 provided on the support column rack 8 that moves together with the support column 6 becomes effective. That is, although the slide cam 10 moves forward, the arm 51b of the first slider 51 is stopped by the stopper member S1.
The switch 52 cannot be pressed and only the spring 50 extends.

The first slider 51 is configured to be slidable in order to distinguish FIG. 6 (a) from FIG. 6 (b), the reason for which will be described later.

FIG. 7 is a rear perspective view of the slide cam of the present invention. On the rear surface of the slide cam 10, in addition to the cam groove 11 and the rack 12, a triangular protrusion 40 is provided above the rack 12.
Are arranged in series, and the protrusions 40 ...
Alternately press plunger 1 (fixed to chassis).

The protrusions 40 are provided so as to correspond to the eject, play, draw, and trays 1 to 6 in the magazine case. Since the reference signal is issued by the first switch 52 as described in FIG. 6A, the slide cam 10 forcibly moving according to the arrow stops at the moment when the selected protrusion 40 presses the second switch 41. It is supposed to be done.

The first slider 51 and the first switch 52
It can be said that the protrusions 40 ... And the second switch 41 controls the level position of the elevator 4. Next, the power failure countermeasure mechanism will be described.

FIG. 8 is an exploded explanatory view of the power failure countermeasure mechanism of the present invention. The slide cam 10 is provided with a sawtooth portion 42 separately from the rack 12, and a second U-shaped groove 43 including the sawtooth portion 42 is provided. The slider 45 is fitted. This second slider 45
Is provided with a square hole 45b in a back plate 45a, a roller 46 is exposed from the square hole 45b, and a triangular protrusion 45c is provided on the rear face. The first switch 52 fixed to the chassis S by the protrusion 45c.
Is turned on / off. The first switch 52 is provided at a position higher than the second switch 41.

The chassis S is also provided with a square hole S2 at a height position corresponding to the square hole 45b, and the leaf spring 48 faces this.

FIG. 9 is a cross-sectional view of the second slider. The roller 46 is large enough to fit in the square hole 45b. Although not described in FIG. 8, a leaf spring 49 is provided inside the second slider 45. The leaf spring 49 holds the neck pin 46a of the roller 46 with a screw.

FIGS. 10 (a) and 10 (b) are operation views of the second slider. FIG. 10 (a) shows that the roller 46 is fitted in the square hole S2 of the chassis S so that the second slider 45 is stationary. Is in a state. Since the leaf spring 48 is located in the recess 8a of the support rack, the roller 46 is not pushed.

On the other hand, in FIG. 10 (b), the leaf spring 48 is pushed by the convex portion 8b of the support rack to push out the roller 46, and the roller 46 pushes out the leaf spring 49 with the neck pin 46a. As a result, the convex portion 49a of the leaf spring 49 is formed. Meshes with the sawtooth portion 42 on the slide cam side, and this time the second slider 4
Reference numeral 5 interlocks with the slide cam 10.

FIGS. 11A to 11E are action diagrams of the slide cam and the second slider. When the tray is selected, the slide cam 10 moves rearward in order to raise the elevator 4 with the column 6 in the front (FIG. 11A).
At this time, the second slider 45 is stationary.

When the height of the elevator 4 is determined, then the support 6 moves rearward, and the leaf spring 48 is pushed out on the way, the second slider 45 moves together with the slide cam 10 from that time. (FIG.11 (c)). The slide cam 10 moves forward to lower the elevator 4 for playing, and at this time, the second slider 45 also moves integrally with the slide cam 10 (FIG. 11D).

After that, when a power failure occurs, if the slide cam 10 is moved backward, the second slider 45 will push the first switch 52 after a short time (FIG. 11).
(E)). Since the position in FIG. 11E is substantially the same as that in FIG. 11C, the height of the elevator at this time matches the height in this cycle. Alternatively, it is also possible to stop the elevator 4 at the time when the above-mentioned second switch 41 is pressed after pressing the first switch 52. Therefore, the operation can be redone from FIG. 11 (c).

That is, the first switch 52 is shown in FIG.
When the column 6 shown in (c) to (e) is in the rear position,
Works as a height memory switch.

However, as shown in FIG. 11D, the slide cam 10 often moves forward, and the first slider 51 approaches the first switch 52. Therefore, in this embodiment, as shown in FIG. 6B, the first slider 51 does not press the first switch 52 when the column 6 is located rearward.

When the support column 6 is located at the front or in the middle as shown in FIGS. 11 (a) and 11 (b),
As shown by, the level is reset by the protrusion 51a of the first slider 51 pressing the first switch 52, and the recovery after a power failure is easily performed.

FIG. 12 is an explanatory view of the magazine unlocking mechanism of the present invention, a part of which is shown in FIGS. 1 and 2.
The lock claw 53 is supported by a pin 54, which is swung by a yoke member 55, and the yoke member 55 is supported by a shaft 56 on the chassis side.

Therefore, the arm 57 of the slide cam 10 (see FIG.
(See) moves forward as indicated by the arrow, the yoke member 55 rotates counterclockwise and the lock claw 53 is swung in the unlock direction. The magazine case MC is ejected by an eject spring (not shown) built in the magazine storage section.

As described above, in the present embodiment, the number of motors, which used to be three in the past, can be changed to two. In addition, since the lock pawl 53 is opened by the slide cam 10, the conventional solenoid 107 is not required. Further, since the first slider 51 is slidably attached to the slide cam 10, the conventional power failure countermeasure limit switch 123 is provided. It is not necessary, so that the number of parts can be reduced, and the size and weight of the disc reproducing device can be reduced.

Next, a technique for preventing malfunction of the disc reproducing apparatus of the present invention will be described. In FIG. 11, (a) → (b)
As described above, the disk selection and the recording / reproducing are performed by the operations of (c) and (d).

FIGS. 13 (f) to 13 (i) are operation diagrams showing the operation after the disc is reproduced, and the following alphabets are attached to match FIG. 11 in order. FIG. 13F shows the operation of moving the slide cam 10 in the direction of the arrow and returning the elevator 4 (not shown) to the original height since the reproduction operation is completed. The second slider 45 fits into the square hole S2 of the chassis S and is locked during movement. In FIG. 13 (g), the column 6 is moved in the arrow direction in order to move the tray forward from the elevator 4 that has been returned to the original height. FIG.
(H) shows a state in which the tray is returned to the front magazine case MC or the like. Then, if the reproduction command is input, the slide cam 10 moves to return to FIG. 11A where the height of the elevator 4 is corrected.

By the way, FIG. 13 (f) to FIG. 13 (g)
The second slider 45 rarely goes into the square hole S2 at the stage of transition to the step of the next step (see FIG. 11).
There is an inconvenience that it does not shift to (a) to (d). If FIGS. 11 (a) to 11 (d) are not executed, the tray cannot be returned to the predetermined stage of the magazine case at the time of power failure,
It's a problem. The reason why the roller 46 does not enter the square hole S2 of the chassis S is that the leaf spring 49 of FIG.
When meshing with the saw-toothed portion 42 on the slide cam side, it is conceivable that they mesh with each other by a few teeth.

Therefore, the roller 46, that is, the second slider 45.
Requires a technique for surely engaging the square hole S2 of the chassis, which technique will be described below.

FIG. 13 (i) is a diagram for explaining the position correction of the second slider 45. The slide cam 10 in FIG. 13 (h) is reciprocated forward and backward by a certain distance in FIG. 13 (i) to complete the meshing. Let

FIG. 14 is a flow chart when a disc exchange command is issued during reproduction by the disc reproducing apparatus of the present invention.
When a disk replacement command is issued in ST01 (meaning step No. 1), it is checked in ST02 whether or not the drawer is closed. This is because it is programmed not to proceed to the next step when the drawer is open. If yes (Y), no problem, but if no (N), ST0
Drawer is forcibly closed at 3.

It is confirmed in ST04 that the file is being reproduced, and S
The reproduction operation is forcibly ended at T05. Next, the elevator is raised to the tray collecting stage (ST06), and the tray is returned to the magazine case (ST07).

In ST08, the second motor is normally rotated. The elevator goes up by rotating in the normal direction. This forward rotation operation is the second
Continue until the switch 41 is turned off (ST09). When the second switch 41 is turned off, the second motor is reversely rotated in ST10. In this reverse rotation operation, the second switch 41 once turns on (ST11) and turns off again (ST1).
Continue until 2). That is, the second in ST09 and ST11
The forward / reverse rotation operation of the motor causes a fine reciprocating motion of the slide cam 10 shown by an arrow in FIG. 13 (i), and as a result, the second slider 45 surely meshes with the square hole S2.

If the second motor is normally rotated in ST13, the second switch 41 is turned on (ST14), the second motor is stopped (ST15), and the elevator is raised or lowered to the next designated stage in ST16. Good. The features of FIG. 14 are summarized in that the steps of ST08 to ST12 marked with * are added to the normal flow. After the tray is collected in the magazine case, the slide cam is reciprocated back and forth around the specified position. Thus, the slider could be guided to a position suitable for being integrated with the chassis.

[0070]

As described above, according to the present invention, by adopting the clutch gear, the tray hook drive motor and the OPEN can be obtained.
A single motor can serve as the / CLOSE motor.

Further, by adopting a slider which is integral with the chassis or integral with the slide cam in accordance with the position of the tray hook, the slide cam can be returned to the position corresponding to the selected tray, and thus the control system Even if the position memory is lost, the return operation can be performed smoothly.

Further, after the tray is collected in the magazine case, the slide cam is reciprocally moved back and forth around the specified position, so that the slider can be guided to a position suitable for being integrated with the chassis, and thus the slider is engaged. Malfunctions can be prevented.

[Brief description of drawings]

FIG. 1 is an internal plan view of a disc reproducing apparatus according to the present invention.

FIG. 2 is a side view of the disc reproducing apparatus according to the present invention.

FIG. 3 is an explanatory view of a drive unit of the disc reproducing apparatus according to the present invention.

4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is a rear view of a slider cam front portion according to the present invention.

FIG. 6 is an operation diagram of a first slider according to the present invention.

FIG. 7 is a rear perspective view of the slide cam according to the present invention.

FIG. 8 is an exploded view of the power failure countermeasure mechanism according to the present invention.

FIG. 9 is a sectional view of a second slider according to the present invention.

FIG. 10 is an operation diagram of a second slider according to the present invention.

FIG. 11 is an operation diagram of a slide cam and a second slider according to the present invention.

FIG. 12 is an explanatory diagram of a magazine unlock mechanism according to the present invention.

FIG. 13 is an operation diagram showing the operation after reproducing the disc of the present invention.

FIG. 14 is a flow chart when a disc exchange command is issued during reproduction by the disc reproducing apparatus of the present invention.

FIG. 15 is a plan view of the inside of a conventional magazine / manual insertion type playback device.

FIG. 16 is a side view of a conventional magazine / manual insertion type reproducing device.

FIG. 17 is an explanatory view of a drive unit of a conventional magazine / manual insertion combined-use reproducing apparatus

FIG. 18 is a view (principle diagram) viewed in the direction of arrow 18 in FIG.

FIG. 19 is a view (principle diagram) viewed from arrow 19 of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disk reproducing device, 2 ... Magazine storage part, 3 ... Manual insertion part, 4 ... Elevator, 5 ... Tray hook, 10 ... Slide cam, 11 ... Cam groove, 20 ... 3rd pinion, 22 ...
Second motor, 23 ... First pinion, 24 ... Clutch gear, 28 ... Motor (first motor), 37 ... Second pinion, 45 ... Slider (second slider), 51 ... First slider, 52 ... Switch means ( 1st switch), MC ... Magazine case, S ... Chassis.

Claims (3)

[Claims] 1. A magazine accommodating portion into which a magazine case accommodating a plurality of discs can be mounted, and a manual insertion portion that can handle at least one disc separately from the magazine case, and are horizontally pulled by a tray hook. In a disc reproducing device for moving a tray to a play position by an elevator, the disc reproducing device includes a first pinion for moving a tray hook, a second pinion for moving a drawer-like drawer of a manual feed unit, and A disc reproducing apparatus comprising: a clutch gear which is switched by up and down movement of an elevator and is selectively connected to the first pinion and the second pinion; and a motor which drives the clutch gear. 2. A magazine accommodating portion into which a magazine case accommodating a plurality of discs can be mounted, and a manual insertion portion that can handle at least one disc separately from the magazine case. In a disc reproducing apparatus in which a tray is moved to a play position by an elevator, the disc reproducing apparatus has a slide cam provided with a stepped cam groove for moving the elevator up and down, and the tray hook is provided in the vicinity of a magazine storing portion. Slider that is integrated with the chassis when it is located at the position and that moves integrally with the slide cam when the tray hook moves near the play position and moves away from the chassis, and a slider that is provided on the chassis and that is moved immediately after the power failure is restored. A disc reproducing apparatus comprising: a switch unit that is operated by. 3. An elevator for moving a tray laterally pulled by a tray hook to a play position, and a slide cam provided with a stepped cam groove for raising and lowering the elevator.
A disc reproducing apparatus comprising: a slider that is integrated with the chassis when the tray hook is located near the magazine storage portion; and a slider that moves integrally with the slide cam away from the chassis when the tray hook moves near the play position. In the operating method, the disk reproducing apparatus is characterized in that after the tray is collected in the magazine case, the slide cam is reciprocally moved back and forth around the specified position to guide the slider to a position suitable for being integrated with the chassis. Driving method.