JP3091665B2 - Control method of disk playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a disk reproducing apparatus for reproducing information from a disk as an information recording medium. More particularly, the present invention relates to a method for controlling a disk reproducing apparatus having a changer function capable of storing a plurality of disks vertically and selectively reproducing a specified disk from among them.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a disk reproducing apparatus in which a plurality of optically readable disks are vertically arranged and selectively reproduced (see Japanese Patent Publication No. 7-7560).
This is, as shown in FIGS. 40 and 42, the device body (1).
At the back, a stocker (74) capable of storing a plurality of disks arranged in multiple stages in the vertical direction is provided. The stocker (74) is provided with a sub-tray (58) on which each disk D is placed. An optical head base (27) for playing a disc is provided inside the front panel (10) of the apparatus main body (1), and the outside and inside of the apparatus main body (1) are provided above the optical head base (27). A reciprocating main tray (4) is provided.

[0003] Above the main tray (4), a clamp piece (57) for holding a disc is provided so as to be able to move up and down with respect to the optical head base (27). The main tray (4) on which the disk is placed is pulled into the apparatus main body (1), and the clamp piece (57) is lowered while facing the optical head base (27). It is held on the base (27) and can be reproduced. The description of the mechanism for raising and lowering the clamp piece (57) is omitted. The stocker (74) meshes with a plurality of worms (59) erected on the bottom surface of the apparatus main body (1) and is provided so as to be able to move up and down.

When a user places a new disc on the main tray (4) and wants to play the disc, first, the user pulls out the main tray (4), places a disc D on the main tray (4), and places the disc on the main tray (4). Is stored in the apparatus body (1). As shown in FIG. 41, the main tray (4) faces the optical head base (27) at the storage position in the apparatus main body (1). Clamp piece (57)
Is lowered, and the center of the disc is pressed and held gently, and reproduction is performed. When the user operates the front panel (10) to designate and input a desired disc in the stocker (74), the worm (59) is rotated by the drive mechanism as shown in FIG. The stocker (74) rises and the sub-tray (58) on which the disc to be played is
Ascend to the position in the same plane as (4) and stop. In this state, the disc is transferred from the sub-tray (58) to the main tray (4) by a transport mechanism (not shown), and
(4) moves horizontally above the optical head base (27), and reproduction becomes possible as described above.

[0005]

In the conventional disk reproducing apparatus, the main tray (4) on which the disk is placed is located on the optical head base (27) during the disk reproduction, so that the disk is reproduced. Main tray (4)
You can't just move. Therefore, it is inconvenient to store another disk in the apparatus main body (1) or to remove it from the apparatus main body (1) during reproduction of the disk.
Therefore, the applicant has devised a disk reproducing apparatus which solves such inconvenience.

[0006] As described later, an opening / closing slide (80) for sliding a selected tray (4) between a stocker (74) and a disc discharge position is connected to a tray (4) loading mechanism. Raised and lowered independently, and tray even during disc playback
(4) can be taken out of the apparatus (see FIG. 25). The conventional disk reproducing device raises and lowers the stocker (74), but the disk reproducing device proposed by the applicant raises and lowers the opening and closing slide (80), so that the opening and closing slide (80) is raised and lowered smoothly, and the tray is moved up and down. A device for linking with (4) is required. Further, in general, such a disk reproducing apparatus has a memory therein, and when reproducing a disk, it is possible to know which tray (4) the disk placed on is reproducing. However, if the power is turned off during the playback of the disc, the contents stored in the memory are erased, and the tray (4) holding the disc being played is stored in the stocker (74) when the power is turned on again. I don't know which height position to return to. In this case, it is conceivable to provide a sensor in the stocker (74) for detection, but the number of parts increases and the manufacturing cost increases. The present invention clarifies a control method for efficiently and safely driving a mechanical deck of a disk reproducing apparatus proposed by the applicant. It is a further object of the present invention to dispose trays and gear trains for sliding the trays at regular positions when tray unloading is completed, and to safely raise and lower the trays. A further object of the present invention is to simply and reliably detect at which position in the stocker the tray should be stored at the time of initial power-on.

[0007]

A disk reproducing apparatus is provided at a loading completion position, and selects one tray.
A tray holder (5) capable of supporting (4), and a guide rod (40) that is softly locked to each tray (4) and slides in the opening and closing direction, and the tray opening and closing mechanism is engaged with the guide rod (40). The transport mechanism is provided on the tray holder (5), meshes with the tray (4), releases the soft engagement of the guide rod (40) with the spring during loading, and moves the tray (4) to the tray holder. A gear train (6) that slides toward (5), in which the tray (4) comes into contact with the tray holder (5) when the unloading is completed, and the gear train (6) A contact wall (63) for restricting the rotation of the shaft is provided. Also, a loading detection switch that detects the presence of the tray (4)
(SW3) is provided at the loading completion position of the tray (4), and when the tray (4) is stored in the stocker (74),
Close position detection switch operated by opening / closing slide (80)
(SW2) is provided on the transition path of the opening / closing slide (80).

At the start of unloading, the tray opening / closing mechanism is operated to urge the guide rod (40) in the direction opposite to the unloading direction.
After 3) hits the tray holder (5), the gear train (6)
Is rotated in the unloading direction. Also tray
(4) When starting to move up and down, the gear train (6) is once rotated in the loading direction and then unloaded again, and after the unloading operation is completed, the tray opening / closing mechanism is operated in the direction opposite to the unloading direction. The guide rod (4
Restrict the sliding of 0). Further, when the initial power is turned on, the tray holder (5) is once lowered to a position where the disc can be reproduced, and the tray is moved by the loading detection switch (SW3).
If the presence of (4) is confirmed, the tray (4) and the tray holder (5) are raised and lowered to respective height positions in the stocker (74), and the height position where the tray (4) is to be stored is set. In order to confirm whether or not the tray (4) is displaced, the tray (4) is unloaded once by operating the transport mechanism, and when the tray (4) collides with another tray (4), the tray (4) is unloaded. The switching of the closing position detection switch (SW2) by the linked opening / closing slide (80) is detected, and it is detected that the tray (4) is placed at an incorrect height position.

[0009]

[Action and effect]

1. When unloading the tray (4),
By operating the tray opening / closing mechanism, the guide rod (40) is urged in the direction opposite to the unloading direction. When the unloading is completed, the contact wall (63) of the gear train (6) becomes the tray holder (5).
Then, the gear train (6) is further rotated in the unloading direction. The guide opening / closing mechanism restricts the sliding of the guide rod (40) in the unloading direction.
(40) does not slide with the unloading of the tray (4). Therefore, when the unloading is completed, the tray (4) can be softly locked with the guide rod (40) without fail, and is reliably positioned at the disk discharge position. Further, when the unloading is completed, the gear train (6) may slightly rotate from a normal position due to a repulsive force when the contact wall (63) collides with the tray holder (5). By rotating the gear train (6) again in the unloading direction, the gear train (6) can be deployed at a regular position. Therefore, when loading the tray (4) again, the loading operation can be performed smoothly. 2. When raising and lowering the tray (4), once the gear train
After rotating (6) in the loading direction, unloading is performed again. As a result, when the tray (4) starts moving up and down, even if the gear train (6) is initially displaced in the rotational direction from the original position, it is returned to the normal position. After the unloading operation is completed, operate the tray opening / closing mechanism to move the guide rod (4
Restrict the sliding of 0). The guide rod (40) is provided at a regular position. Therefore, when the tray (4) and the tray opening / closing mechanism move up and down, they do not hit the gear train (6) and the guide rod (40), respectively.
The tray (4) and the tray opening / closing mechanism can be raised and lowered smoothly. 3. Loading detection switch at initial power-on
The tray (4) whose existence is confirmed by (SW3) is moved up and down to each height position. The tray (4) disposed at each height position is once unloaded, and when it collides with another tray (4a), a closing position detection switch (SW2) using an opening / closing slide (80) connected to the tray (4a). ) Is detected,
It detects that the tray (4) has been deployed at the wrong height position. Therefore, it is not necessary to provide a separate detecting means for checking whether or not the tray (4) is arranged at the regular height position, and the height position at which the tray (4) is to be stored can be determined by a simple means. And can be reliably detected.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In the following description, the direction in which the disc is inserted into the apparatus main body (1) is referred to as front, and the direction in which the disc is ejected is referred to as rear. FIG. 1 is a perspective view of the apparatus main body (1). Insert the door into the insertion window on the front panel (10) of the main unit (1).
(16) is provided with its lower end pivotally supported, and a mechanical deck (100) is provided inside the door (16), as shown in FIG. When the door (16) is opened, the stocker plate (75) in the mechanical deck (100) is exposed, and a plurality of rail rods (76) are arranged in multiple stages on the inner surfaces of both side walls of the stocker plate (75). . Each of the rails (76) accommodates a tray (4) on which a disc is placed, and each tray (4) is horizontally arranged in a plurality of stages. In this embodiment, three trays (4), (4) and (4) will be described.

[0011] The playback, stop, and removal of the disc are performed by a play button (11), a stop button (12),
This is performed by operating the open / close button (13). Device body (1)
The power is turned on by operating the power button (14), and the disc to be reproduced is selected by operating the number buttons (15), (15), and (15). The signals of the above operation buttons are displayed on the front panel (10).
Is input to the processor (200) connected to the device, and the operation of the device is controlled by the processor (200). This embodiment is characterized by a control method of the disk reproducing apparatus.
First, the outline of the configuration of the apparatus will be described.

(Overall Configuration) FIG. 3 is a perspective view of the mechanical deck (100), and FIG. 17 (a) is a left side view of the inside of the mechanical deck (100). The mechanical deck (100) includes a pair of side plates (7) and (70) on a chassis (2), and a tray holder (5) on which one selected tray (4) is placed at the back of the mechanical deck (100). ) Is arranged to be able to move up and down. An optical head base (27) having a turntable (29) and a pickup (28) is provided on the chassis (2) at a position below the tray holder (5). In the following description, the ejection position of the tray (4) or the disc means the position where they protrude outside the mechanical deck (100) as shown by the dashed line in FIG. 3. As shown in FIG. 5, the standby position and the reproduction position inside the door (16) are the positions where they reach the optical head base (27). The loading completion position is a position where they have advanced from the storage position to above the reproduction position. As will be described later, a tray opening / closing mechanism is provided on one side of the side plate (7) to allow the tray (4) to protrude and retract from the apparatus main body (1).
(4) reciprocates between the disc ejection position and the position accommodated in the stocker (74) (see FIG. 5). Also, the tray (4) is pulled into the inner part of the mechanical deck (100) by the transport mechanism, descends while being placed on the tray holder (5), and the tray (4) reaches the optical head base (27). Then, the disc is reproduced (see FIG. 18A). Further, while the tray (4) maintains the reproduction position where it has reached the optical head base (27), only the tray opening / closing mechanism is lifted off the tray (4), and the other tray (4) in the stocker (74) is raised. ) Can be opened and closed (see FIGS. 26 and 30). Hereinafter, the details will be described.

As shown in FIGS. 3 and 4, each tray (4)
Has a rack portion (42) formed inward on one side of a mounting plate (430) on which a disk is mounted. Tray (4)
A guide rod (40) extending back and forth is detachably fitted to the outside of the one side. The gear train (6) provided on the tray holder (5) meshes with the rack (42), and the tray (4) slides back and forth by rotation of the gear train (6). An opening (51) is formed in the center of the tray holder (5) to allow the passage of a laser beam from the pickup (28) during disc reproduction. A clamp piece that covers the center of the disk on the turntable (29) is attached to the upper surface of the tray holder (5).
Illustration is omitted.

From both sides of the tray holder (5), 3
The projecting shafts (50), (50), (50) protrude. The protruding shafts (50), (50), and (50) on one side face the first vertical hole (71) formed in the side plate (70).
(71), (71), and the tray holder (5) is in the first vertical hole (71) (7).
1) It is provided to be able to move up and down along (71). The side plate (70)
A plate-like first slide body (9) is provided slidably forward and backward on the outside of the tray holder. Two of the protruding shafts (50), (50), and (50) of the tray holder (5) are the first slide bodies. It penetrates the vertical holes (71) and (71) and fits into the cam groove (93) formed in the first slide body (9). A guide plate (77) is attached to the inside of the left side plate (7),
The three trays (4), (4), (4) are fitted and supported between the guide plate (77) and the stocker plate (75). Therefore,
The stocker (74) in this embodiment includes a stocker plate (75) and a guide plate (77). FIG. 30 is a cross-sectional view of FIG. 3 taken along line AA. Each tray (4) is separated by a predetermined distance, and the stocker plate (75) and the guide plate (77)
It is stored straddling.

As shown in FIG. 3, the mounting plate (4) of the tray (4)
30), a first concave portion (400) having substantially the same diameter as the outer diameter (12 cm) of the standard-size disk is formed. When the disk is mounted, the upper surface of the disk and the tray (4) are formed. The depth of the first concave portion (400) is set so that the upper surface of the first concave portion (400) becomes the same surface. Further, in order to mount a disk having a small recording capacity and an outer diameter of 8 cm in the first recess (400), the first recess (400) is concentric with the first recess (400), and the inner diameter is larger than that of the first recess (400). A small second recess (410) is formed. Where both recesses
Notches (420) are formed in (400) and (410) for reading information recorded on the disc by a pickup. Incidentally, both the tray (4) and the tray holder (5) are made of synthetic resin in view of the weight reduction of the whole apparatus.

FIG. 4 is an exploded perspective view of a part of the mechanical deck (100). To simplify the drawing, illustration of various gears and switches is omitted. The guide plate (77) has elongated holes (78), (78), (78) extending in the front-rear direction arranged in three upper and lower stages. Inside the left side plate (7), a second slide body (90) is provided slidably forward and backward on the chassis (2), and the second slide body (90) is provided with the first slide body. (9) Cam groove (93) (93)
A cam groove (94) symmetrical with the front and back is provided. The first slide body (9) and the second slide body (90) are connected by a rotating lever (92) attached to the lower surface of the chassis (2).
The rotating lever (92) has a central portion pivotally supported by the bottom surface of the chassis (2), and a first sliding member (9) and a second sliding member at both ends.
(90) Engage the slot formed in (90), and both slides (9) (90)
Are driven in opposite directions. The tray holder 5 moves up and down along the cam grooves 93, 93 and 94 and the first vertical hole 71 by sliding the first and second slide bodies 9 and 90 back and forth. After the tray (4) is transported forward by the gear train (6) and is placed on the tray holder (5), the tray (4) and the tray holder (5) are lowered. Tray (4) is optical head base
When (27) is reached, the disc can be played.

The left side plate (7) has the same first vertical holes (71), (71), (71) as the other side plates (70), and the second vertical holes narrower than the first vertical holes (71). (72), (72) and (72) are established respectively. The side plate (7)
A third slide body (91) is attached along the side plate (7) to the outside of the. The third slide body (91) has an L-shape integrally including a horizontal plane and a vertical plane. The horizontal plane is in contact with the lower surface of the chassis (2), and cam grooves (95) and (95) are formed in the vertical plane.
Outside the third slide body (91), a support bracket (8) made of resin is provided to face the side plate (7). Three pins (81), (81) and (81) protrude inward from the support bracket (8), of which two pins (81) and (81) pass through the cam grooves (95) and (95). The other one is inserted in the second vertical hole (72) (72), respectively.
Fit each in 2). An opening / closing slide (80) is attached to the outside of the support bracket (8).
0) is fitted into a guide hole (87) which is extended and opened in the support bracket (8). The opening / closing slide (80) slides forward along the guide hole (87) to convey the tray (4) to a position to be stored in the stocker plate (75) and slides backward as described later. Then, the tray (4) is moved in the disc ejection direction.

Therefore, the tray (4) is moved between the position for ejecting the disk indicated by a dashed line in FIG. 5, the position stored in the stocker plate (75) indicated by a solid line, and the position waiting above the optical head base (27). To move horizontally. The tray (4) is further supported by the tray holder (5) and descends from the position where it stands by above the optical head base (27) toward the optical head base (27). In the following description, the position where the tray (4) is stored in the stocker (74) is referred to as a closed position, and the position where the tray (4) slides in the disk discharging direction is referred to as an open position. Loading of the tray (4) toward the tray holder (5) is performed, and the tray (4) moves away from the tray holder (5) to the stocker.
Sliding toward (74) is called unloading.

In FIG. 5, M1 to M3 are motors for driving the respective mechanical components, SW1 to SW5 are switches for detecting the operation end position of the mechanical components, and SE1 is a sensor comprising a photocoupler. The motor (M1) performs the operation of raising and lowering the tray (4), the motor (M2) performs the operation of lifting and lowering the tray holder (5), and the motor (M3) performs the loading and unloading operations of the tray (4). The processor (20
Switches (SW1) to (SW4) and a sensor (SE1) are connected to the input port of (0), and the motors (M1) to (
(M3) is connected. Each operation button on the front panel (10) is connected to the processor (200), and various modes are set by operating the operation buttons. Hereinafter, the mechanism controlled by the motor and the switch will be described in detail.

(Tray Opening / Closing Mechanism) FIGS. 6 and 7 are left side views of the mechanical deck (100). For convenience of explanation, only the highest tray (4) is shown. On the inside of the side plate (7), a motor (M
1) is attached, and the rotating shaft (88) of the motor (M1) is a side plate.
Projecting outward through (7). Support bracket (8)
An intermediate gear (84) and a pulley (85) are provided in the center of the
The intermediate gear (84) is driven by the pulley (85). Pulley (8
5) is connected to a rotating shaft (88) of the motor (M1) via a belt (86), and the intermediate gear (84) is connected to an opening / closing slide (80). The front end of the opening and closing slide (80) fits into the guide hole (87),
The rotation of the motor (M1) drives the pulley (85) and the intermediate gear (8
Slide back and forth through 4). A closing position detection switch (SW2) and an opening position detection switch (SW1) are provided on the transition path of the opening / closing slide (80).
Is the upper end of the opening / closing slide (80).
(SW1) is pushed in at the lower end of the opening / closing slide (80).

An opening and closing slide is provided on the support bracket (8).
A lock lever (83) is provided to face the upper end of (80). The lock lever (83) is pivotally supported at the center and is spring-biased counterclockwise. The lock lever (83) is fitted to the open / close slide (80) disposed at the closed position, holds the closed position of the open / close slide (80), and opens / closes when an external impact is suddenly applied. 80) to prevent misalignment. A locking claw (82) protrudes inward from the opening / closing slide (80) and fits into a guide hole (87) of the support bracket (8). A projection (41) projects outward from the tip of the guide rod (40), and the locking claw (82)
Fits into the projection (41) (see FIG. 27). Support bracket
At (8), a groove (89) into which the projection (41) fits is formed perpendicular to the guide hole (87). In this embodiment, since the three trays (4) are provided, the guide rod (40) and the projections (41) are also provided at three upper and lower positions, and as shown in FIG. ) Are aligned in the closed position. The protrusion (4) other than the protrusion (41) fitted to the locking claw (82) is inserted into the concave groove (89).
1) The fitting of (41) prevents the tray (4) in the stocker (74) from being displaced back and forth due to external vibration.

Here, the tray (4) and the guide rod (40) are shown in FIG.
It is configured as shown in (a) and (b). The guide rod (40) has a stop shaft (43) protruding forward of the protrusion (41), and the stop shaft (43) is at the front end of the long hole (78) of the guide plate (77) in the closed position. Abut The guide rod (40) has a receiving surface for supporting the tray (4).
(49) is protruded horizontally inward, and a leaf spring (44) is provided on the inside of the rear end so as to be cantilevered. The leaf spring (44) is provided with a convex part (45) inward at the center part, and on the side part of the tray (4),
A concave portion (46) into which the convex portion (45) fits is opened. Leaf spring
The tray (4) is softly locked to the guide rod (40) by the elastic force of (44). FIG. 8 (b) is a diagram showing a state where the tray (4) and the guide rod (40) are assembled as viewed from the direction of arrow B. Rack part
The height of (42) is larger than the thickness of the mounting plate (430), the lower end protrudes from the lower surface of the mounting plate (430), and the lower surface of the receiving surface (49) matches the lower surface of the rack portion (42). . FIG. 10 is a plan view of the tray (4) and the tray holder (5) in the closed position. tray
One large tooth (48) having a larger tooth thickness than other teeth is formed substantially at the center of the rack portion (42) of (4). As will be described later, the gear train (6) of the tray holder (5) and the rack (4)
2) When assembling, if the relative position is shifted, the tray
This is to make the sliding of (4) impossible.

When the opening / closing slide (80) slides backward against the engagement with the lock lever (83) by the rotation of the motor (M1) from the closed position shown in FIG. The tray (4) slides in the opening direction together with the guide rod (40) due to the engagement between the tray and the projection (41). As shown in FIG. 7, when the opening / closing slide (80) pushes the open position detection switch (SW1), the rotation of the motor (M1) is stopped, and the disk can be placed on the tray (4) in this state. When the user operates the front panel (10) from the open position to input a signal to store the disc in the stocker (74), the motor (M1) rotates to open and close the slide (8).
0) slides forward. The tray (4) and the guide rod (40) also slide forward. The opening / closing slide (80) is a closed position detection switch
When (SW2) is pushed in, the rotation of the motor (M1) stops and reaches the closed position.

(Tray Loading Mechanism) FIG. 11 is a plan view showing a completed loading state. In FIGS. 10 and 11, the side plates (7) and (70) are omitted for convenience of explanation.
The gear train (6) provided on the tray holder (5) is operated by a motor (M3) provided on the back side of the tray holder (5). The first gear (60) on the downstream side of the gear train (6) is provided with a recess (62) having no teeth formed on a part of the peripheral surface thereof, and the guide rod (40) in the closed position, that is, the unloading position. Rack section (4
The tip of 2) fits into the recess (62). Figure 9 shows the tray holder
FIG. 5 is a left side view of the tray (5) and the tray (4), showing a tray holder (5).
A guide piece (53) for supporting the tray (4) protrudes from the inside of the side of the tray. The first gear (60) meshes with the second gear (61),
The upper surface of the first gear (60) is provided higher than the upper surface of the second gear (61). The tray (4) slides while being supported by the guide piece (53) while the lower side of the rack (42) is fitted to the upper end of the first gear (60). As described above, the rack portion of the tray (4)
(42) The lower side is lower than the mounting surface (430), so the mounting surface (430)
Does not hit the gear train (6).

As shown in FIGS. 10 and 16, the second gear
(61) has a contact wall (63) on the lower surface. Tray holder (5)
An arc-shaped concave groove (52) is formed on the upper surface, and the second gear (61) is formed.
Rotates with the tip of the contact wall (63) fitted in the concave groove (52). An unloading detection switch (SW5) is provided at a rotation transition road end of the contact wall (63) on the tray holder (5). In the gear train (6), the abutment wall (63) of the second gear (61) abuts on the clockwise edge of the concave groove (52), and the unloading detection switch (SW5) is pushed in. (60) dent
Assembled with (62) facing outward. In the peripheral surface of the second gear (61), a portion (61a) meshing with the first gear (60) is provided with only a part of the tooth surface to constitute a Geneva mechanism. This prevents the tray (4) from sliding more than the normal amount of movement even if the motor (M3) rotates more than the normal rotation for some reason.

At the back of the tray holder (5), the tray (4)
Loading detection switch pushed by the front end of the
(SW3) is provided. Further, a locking lever (54) spring-biased counterclockwise is provided on the side of the switch (SW3), and a portion corresponding to the locking lever (54) on the lower surface of the mounting plate (430). Is formed with a concave portion (47). Recess (4
The fitting of the locking lever (54) with the locking lever (54) prevents the tray (4) from being displaced due to external vibration when the loading is completed.

At the time of loading, the motor (M3) is energized, the first gear (60) rotates clockwise, and the end of the recess (62) of the first gear (60) is moved to the rack (42) of the tray (4). Kick out the tip of). The rack (42) and the first gear (60) mesh with each other, and the guide rod (40) and the tray (4) are drawn forward and slid. However, the sliding of the guide rod (40) is restricted because the stop shaft (43) is in contact with the front end of the long hole (78) of the guide plate (77), and the guide rod (40) by the leaf spring (44) is used. And the tray (4) is released from the soft lock, and only the tray (4) slides forward.

The first gear (60) makes one rotation, the recess (62) fits into the large tooth (48) shown in FIG. 10, and the rack (42) slides further forward, so that the tray (4) Is guided by the guide piece (53),
Keep moving forward. As shown in FIG. 11, when the tray (4) pushes the loading detection switch (SW3), the motor (M
3) The rotation stops. In this state, the tray (4) can be moved up and down together with the tray holder (5). If the second gear (6
1) There was a mistake in the installation, and in the closed position, the contact wall (6
If 3) is mounted so that the unloading detection switch (SW5) is not depressed, the depression (62) does not mesh with the large tooth (48) during rotation of the first gear (60), so that loading cannot be performed. Therefore, it can be seen that the second gear (61) is not mounted in a proper state. The gears in this embodiment are all made of synthetic resin such as polyacetal.

(Tray lifting mechanism) Tray (4) is a tray holder
The tray holder (5) is moved up and down between the loading completion position and the optical head base (27) by being supported by (5), and the tray holder (5) is moved forward and backward by the second and third slide bodies (90) and (91). , Cam groove
Go up and down along (93) and (94). The second and third slides (9
0 and 91 are driven by a gear mechanism (3) provided on the chassis (2). Hereinafter, a detailed configuration will be described. FIG. 12 shows the mechanical deck without the tray (4) and the optical head base (27).
FIG. 13 is a perspective view of (100), and FIG. 13 is a plan view of a mechanism for sliding the first slide body (9) and the second slide body (90).
A motor (M) is located rearward from the center of the chassis (2).
A gear mechanism (3) connected to the gear mechanism (2) is provided;
Fits into a recess (20) formed in the chassis (2). The gear at the downstream end of the gear mechanism (3) is provided by overlapping two gears (30) and (31). The upper gear (30) is connected to the second slide body (90).
, And the lower gear (31) meshes with the rack portion (97) of the third slide body (91) as described later.
The gear (31) has a reference hole (31a) for positioning when assembling to the chassis (2).

Two positioning projections (34) (34a) protrude from the upper surface of the drive gear (32) meshing with the lower gear (31),
A control gear (33) is fitted to the positioning projections (34) (34a). The two positioning protrusions (34) (34a) have different diameters, and the control gear (33) is not mounted at an incorrect angle. At the periphery of the control gear (33), there are six detection holes (38) (38)
Are set up on concentric circles. Recess (20) in chassis (2)
Is connected to the opening (21), and the lower gear (31) is exposed from the opening (21). The third slide body (91) is mounted separately from a rotation transition path of a rotation lever (92) provided on the lower surface of the chassis (2), and the gear (31) is mounted on the third slide body.
(91) (see FIG. 14).

The chassis (2) is provided with arc-shaped grooves (22) and (22) corresponding to both ends of the rotating lever (92).
Both ends of (2) penetrate through the arc-shaped grooves (22) and (22) and are fitted to the first slide body (9) and the second slide body (90), respectively. The rotation lever (92) is spring-biased counterclockwise to urge the first slide body (9) forward and the second slide body (90) backward. On the chassis (2), sandwich the detection hole (38),
A sensor (SE1) composed of a photocoupler is attached. The sensor (SE1) counts the number of detection holes (38) passing when the control gear (33) rotates, and the processor (200) shown in FIG.
Reads the count information, temporarily stores it in the memory, and detects the rotational position of the control gear (33). First,
The sliding of the second slide bodies (9) and (90) is controlled by detecting the rotation angle of the control gear (33) by the sensor (SE1).

The control gear (33) is composed of two intermediate gears (39) (39)
Through the motor (M2) on the chassis (2). A playback position detection switch (SW4) is provided on the transition path of the second slide body (90) at the back of the chassis (2).
The reproduction position detection switch (SW4) is set to the second slide body (9
When pushed by the tip of (0), the rotation of the motor (M2) stops. As shown in FIGS. 12 and 15, the control gear (3
3) is formed in three stages, and forms a large gear (36) and a small gear (37) on the lower surface of the flange (35). The detection holes (38) (38) are opened in the flange (35). On the lower surface of the small gear (37), the drive gear
(32) Holes (380) (380) into which the positioning protrusions (34) (34a) fit
a) has been established. The small gear (37) meshes with the upper gear (30), and the peripheral surface extends for about 180 °, with no play
(370) is formed.

The drive gear (32) has similar play surfaces (320) and (320) separated from each other at two places on the peripheral surface, and an opening (340) is provided below each play surface (320). The gears (30) and (31) are provided with recessed surfaces (300) and (310) that do not form tooth surfaces at two places on the peripheral surface. From the lower end of each concave surface (300) (310), an ejection tooth (330) kicked by a mating gear protrudes laterally, and the ejection tooth (330) is an opening (340) of the driving gear (32). Fit in. The above play surface (320) (370)
Are formed to have substantially the same diameter as the tooth bottom, and constitute a Geneva mechanism with the mating counterpart gear.

The cam groove (94) formed on the vertical surface of the second slide body (90) slopes four flat portions (94d), (94c), (94b), and (94a), which rise in order toward the front. They are connected by grooves. Therefore, the rotation of the motor (M2) causes the second slide body (90) to rotate.
Slides forward, the tray holder (5) fitted into the cam groove (94) is lowered. As shown in FIG. 12, FIG. 17 and FIG. 18, the four flat portions (94d) (94c) (94b) (94a) correspond to the height positions of the three trays (4) and the tray holder (5). Corresponds to the position placed on the optical head base (27). That is, as shown in FIG. 17 (a), the projecting shaft of the tray holder (5)
When (50) is engaged with the flat portion (94a) at the highest position,
The tray holder (5) faces the tray (4) provided at the highest position. At this time, in the control gear (33), as shown in FIG. 17 (b), a detection hole (38) serving as a reference for detecting a rotational position is opposed to the sensor (SE1).

When the motor (M2) is energized and the control gear (33) rotates counterclockwise, the rotation of the gear (30) meshing with the control gear (33) causes the second slide (90) to slide forward. The first slide body (9) slides rearward via the rotation lever (92). Tray holder by sliding of both slides (9) (90)
(5) descends along the cam grooves (93), (93) and (94). Control gear
FIG. 24 shows the relationship between the rotation angle of (33) and the height position of the tray holder (5). The control gears (33) are 76.
When rotated by 2 ° and 139.4 °, the protruding shaft (50) of the tray holder (5) is fitted to the flat portions (94b) and (94c). Control gear (3
When 3) rotates 20.5 ° from the reference position, as shown in FIG. 18 (a), the protruding shaft (50) is fitted to the lowermost flat portion (94d), and the tray holder (5) is moved to the optical head. Reach base (27). That is, the tray holder (5) reaches the reproduction position.

As shown in FIGS. 28 and 29, a shutter plate (700) is provided inside the right side plate (70) so as to face the front end of the stocker plate (75). A vertically extending elongated hole (710) is formed below the shutter plate (700), and the elongated hole (710) projects inward from the side plate (70).
And the shutter plate (700) is slidable up and down. Notches (720), (720), and (720) are formed in the shutter plate (700) so as to correspond to the front opening of the stocker plate (75), and an arm piece (730) projecting outward from the lower end is provided in the first plate. It is fitted at a position slightly above the lower end of the vertical hole (71). Shutter plate (7
When the tray holder (5) is raised, the projecting shaft (50) is in contact with the lower end of the long hole (710). At this time, the notch (720) and the opening on the tray holder (5) side of the stocker plate (75) are aligned. Tray holder (5)
Is lowered, the protruding shaft (50) is moved to the arm (730) of the shutter plate (700).
Press down. The notch (720) moves down from the opening of the stocker plate (75) on the tray holder (5) side and descends. Shutter plate (7
(00) closes the front opening of the stocker plate (75) as shown in FIG. 29 (b) and regulates the forward sliding of the tray (4). Thus, when a disc is being reproduced, that is, when one tray (4) and the tray holder (5) are lowered to the lowest position, even if an impact is applied to the apparatus main body (1), the other trays (4) are not moved. Prevents shifting forward.

(Support Bracket Elevating Mechanism) The gear mechanism (3) is attached to the chassis (2) as follows. FIG.
As shown in (a), the third slide body (91) is pulled backward, and the rack portion (97) and the reference hole (31a) of the lower gear (31) are aligned and fitted together. At this time, the concave surfaces (310) and (310) of the gear (31) are in contact with the third slide body (91).
One of the ejection teeth (330) faces the drive gear (32) side without going to the rack part (97) side. Next, the drive gear (32) is mounted such that one play surface (320) faces the kickout tooth (330). At this time, the positioning projections (34) (34a) are located on a line perpendicular to the sliding direction of the third slide body (91).

Thereafter, as shown in FIG. 20A, the second slide body (90) is retracted, and the upper gear (30) is moved to the rack section.
Attach so as to engage with (96). One of the ejection teeth (330) of the gear (30) faces the control gear (33). Next, the control gear (3
3) Attach the holes (380) (380a) to the positioning projections (34) (34a). At this time, the clockwise end of the play surface (370) faces the kickout tooth (330). When the motor (M2) rotates and the control gear (33) rotates counterclockwise, the play surface (3
Opposition of the concave surface (300) of the gear (30) and the gear (30) comes off. The small gear (37) of the control gear (33) kicks the push-out tooth (330) of the gear (30) and rotates the gear (30) clockwise. The gear (30) rotates while meshing with the small gear (37) of the control gear (33). Control gear
Since the driving gear (32) and the driving gear (32) are linked by the positioning projections (34) and (34a), the driving gear (32) and the gear (31) meshed with the driving gear (32) also rotate clockwise. . The second and third slide bodies (90) and (91) advance at the same speed. The tray (4) and the tray holder (5) start lowering.

When the control gear (33) rotates 139.4 ° from the reference position and the tray holder (5) descends to a position facing the lowermost tray (4), as shown in FIG. ,
The play surface (320) of the drive gear (32) and the concave surface (310) of the gear (31)
And the gear (31) stops rotating once. Therefore, the third slide body (91) also temporarily stops. The control gear (33) continues to rotate, rotates the gear (30), and slides the second slide body (90) forward. As shown in FIG.
゜ Rotate and the tray holder (5) will move the optical head base (27)
, The small gear (37) of the control gear (33) is disengaged from the gear (30), and the play surface (370) of the small gear (37) and the concave surface (300) of the gear (30) are disengaged. opposite. Therefore, the second slide body (90)
Stops moving forward. Thereafter, even if the control gear (33) rotates counterclockwise, the second slide body (90) does not move forward.

When the drive gear (32) further rotates 9 ° from this state, as shown in FIG. 19C, the play surface (320) of the drive gear (32) is disengaged from the gear (31). The gear (31) and the drive gear (32) start to mesh with each other, and the third slide body (91) moves forward again. When the control gear (33) rotates 344.6 ° from the reference position, the sensor (SE1) detects the detection hole (38) and
The rotation of (M2) stops (see FIG. 23 (b)). That is, the third slide body (91) has the tray holder (5) with the lowest tray.
It does not slide from the position facing (4) until it comes into contact with the optical head base (27), and slides after the tray holder (5) reaches the optical head base (27). The intermittent driving is performed in such a manner that the tray holder (5) reaches the optical head base (27) and the support bracket (8) as described later.
For raising and lowering.

FIGS. 21 to 23 show the relative positional relationship between the second slide body (90) and the third slide body (91). FIG. 24 shows the positional relationship between the tray holder (5) and the support bracket (8) with respect to the rotation angle of the control gear (33). As described above with reference to FIG. 4, of the three pins (81) (81) (81) protruding from the support bracket (8), two pins (8
1) (81) penetrates the cam grooves (95) (95) of the third slide body (91), fits into the second vertical holes (72) (72) of the side plate (7), and slides up and down. Only allowed. The other pin (81) fits in the second vertical hole (72). Each cam groove (95) is gradually raised toward the front 3
A flat part (95c), (95b), and (95a) are integrally formed with a front half part connected by an inclined groove and a rear half part in which the front half is inverted. The inclination angle of the inclined groove is first,
It is the same as the inclination angle of the inclined grooves of the cam grooves (93) and (94) of the second slide bodies (9) and (90). Three flats (95c) (95b) (95a)
Corresponds to the height position of the three trays (4), (4), (4). That is, like the first and second slide bodies (9) and (90), the highest flat portion (95a) corresponds to the highest tray (4),
The lowermost flat portion (95c) corresponds to the lowest tray (4).

Until the control gear (33) rotates 139.4 ° from the reference position, as described above, both the second slide body (90) and the third slide body (91) move forward in synchronization with each other. The relative positions of the slide bodies (90) and (91) do not change. Accordingly, the support bracket (8) descends along with the tray holder (5) along the cam grooves (95) and (95). When the rotation angle of the control gear (33) exceeds 139.4 °, as shown in FIG. 22, the third slide (91) stops moving forward, and only the second slide (90) moves forward. The support bracket (8) stops descending and the pin
(81) remains fitted in the lowermost flat portion (95c).

When the control gear (33) rotates 220.5 ° from the reference position, the second slide (90) stops as described above. Further rotation by 9 ° causes the third slide body (91) to move forward with the second slide body (90) stopped. The tray holder (5) stops lowering and the support bracket (8) is
(81) rises again from the state of being fitted to the lowermost flat portion (95c). The rotational position of the control gear (33) is detected by the sensor (SE1) and, as shown in FIG.
When rotated by 44.6 °, the sensor (SE1) detects the passage of the detection hole (38) farthest clockwise from the reference position,
The rotation of the motor (M2) stops. At this time, as shown in FIG. 23 (a), the pin (81) of the support bracket (8) is fitted to the flat portion (95a) at the highest position.

As described above, the support bracket (8) is provided with the opening / closing slide (80), and the locking claw (8) of the opening / closing slide (80) is provided.
2) is engaged with the projection (41) of the guide rod (40) connected to the tray (4) (see FIGS. 25 and 27). Therefore, the tray (4) to be selected by the opening / closing slide (80) can be changed by raising and lowering the support bracket (8). In this embodiment,
Even when the disc is being played with the tray holder (5) facing the optical head base (27), the support bracket (8) is raised by the further advance of the third slide body (91), and the open / close slide ( The disc can be taken out by the operation of 80). Each operation will be described below.

(Refer to FIG. 1, FIG. 3, and FIG. 5 to FIG. 7) When inserting a disk from outside into the mechanical deck (100), first, the open / close button (13) is operated. The motor (M1) rotates, the opening / closing slide (80) retreats, and the tray (4)
It moves to the disk ejection position with (40). When the open / close slide (80) pushes the open position detection switch (SW1), the motor (M1) stops. User trays disc (4)
When the open / close button (13) is operated again, the motor (M1)
Is reversed, the opening / closing slide (80) moves forward, and the tray (4) is stored in the stocker (74). When the opening / closing slide (80) pushes the closing position detection switch (SW2), the motor (M1) stops. The tray (4) reaches the closed position and is stored in the stocker (74).

(See FIG. 10 and FIG. 11) The reproduction button (11) is operated to reproduce the disk stored in the stocker (74). The unloading detection switch (SW5) is turned off by the rotation of the motor (M3) and the rotation of the second gear (61) of the gear train (6). The tray (4) moves forward with the soft engagement with the guide rod (40) released, the front end of the tray (4) pushes the loading detection switch (SW3), and the motor (M3) stops. The tray (4) is supported by the tray holder (5) by the guide piece (53), and reaches a loading completed state. Here, the guide rod (40) is
The guide rod (40) that is not loaded together with (4)
Is the slide (80) for opening and closing the support bracket (8) as described above.
When the guide rod (40) is loaded, the opening / closing slide (80) must also be loaded,
This is because the entire device becomes larger.

(Elevating Operation FIGS. 12 to 15, FIG. 17,
From this state, the motor (M2) rotates, the first and second slides (9) and (90) slide in opposite directions, and the tray (4) and the tray holder (5) are moved. Together, cam groove (93)
Descend along (94). The sensor (SE1) counts the number of the detection holes (38) passing therethrough and checks the height position of the tray holder (5). The second slide body (90) is set to the playback detection switch (SW).
4) Push in the tray holder (5) with the sensor (SE1).
When the motor reaches the optical head base (27), the rotation of the motor (M2) is stopped. The disc inserted from the front panel (10) into the mechanical deck (100) and placed on the tray (4) can be played.

To play a disc stored in the stocker 74 in advance, the number button 15 is operated to select the tray 4 on which the disc to be played is placed. The processor (200) first determines the desired tray (4) from the tray holder (5) based on the number of detection holes (38) stored in the memory.
Judge whether it is facing the motor, and if it is,
(M3) is energized to load the tray (4). If not, rotate the motor (M2) to raise and lower the tray holder (5), and move the tray holder (5) to the desired tray.
After facing the same plane as (4), the motor (M3) is energized to load the tray (4). In addition, tray (4)
The same operation is performed when only the tray holder (5) is moved up and down in the unloading state.

(Operation for Ejecting Disc During Reproduction) See FIGS. 6, 7, 19, 20, and 23 to 26. The tray (4) and the tray holder (5) are placed on the optical head base (27). In order to remove the other tray (4) in the playback state, first enter the number of the disc to be removed, and then
Operate the open / close button (13). For example, the lowest tray
This shows a case where the disc placed on (4) is reproduced and the disc placed on the tray (4) at the highest position is ejected. As shown in FIGS. 24 and 25, from the position where the tray holder (5) faces the lowermost tray (4), move the optical head base.
Since the third slide body (91) does not slide until reaching (27), the pin (81) of the support bracket (8) is fitted in the lowermost flat portion (95c) of the cam groove (95). Remains. The protrusions (41) of the trays (4) and (4) at the highest position and the intermediate position respectively fit into the concave grooves (89) of the support bracket (8), and the back and forth play is regulated.

From this state, the motor (M2) rotates in the direction for loading the third slide body (91), and as shown in FIGS. 24 and 26, the support bracket (8) is moved to the cam groove (9).
Ascend along 5). Control gear (3
When it is detected that (3) has rotated 344.6 °, the sliding of the third slide body (91) is stopped, and at this time, the pin (81) is moved to the highest flat portion (95a) of the cam groove (95). ).

Since the projections (41) connected to the tray (4) are vertically aligned, the locking claws (82) engaged with the projections (41) corresponding to the lowermost tray (4). Rises directly above,
The engagement is disengaged, and as shown in FIG.
Engage with the projection (41) corresponding to (4). In this state, by sliding the opening / closing slide (80) toward the open position, the disk in the tray (4) disposed at the highest position can be taken out. That is, another disk can be taken out while reproducing the disk.

(Unloading operation) The unloading operation follows the reverse operation path. When storing the disc whose reproduction has been completed in the stocker (74), the number of the tray (4) on which the disc has been placed is input by the number button (15), and the open / close button (13) is operated. When the control gear (33) has rotated more than 220.5 ° from the reference position, that is, when the tray holder (5) has reached the optical head base (27) and the support bracket (8) has been raised, By the rotation of the motor (M2), the third slide body (91) slides backward, and the support bracket (8) descends.

With the further rotation of the motor (M2), the first slide body (9) slides forward and the second slide body (90) slides backward, and the reproduction position detection switch (SW4) is turned off.
The tray holder (5) rises from the position where it reaches the optical head base (27). Tray holder (5) by sensor (SE1)
When it is detected that has reached the height position to stop, the rotation of the motor (M2) stops. The motor (M3) is energized,
When the tray (4) returns to the closed position, the unloading detection switch (SW5) is pushed in, and the motor (M3) stops. The tray (4) and the guide rod (40) are softly locked by a leaf spring (44). The motor (M1) rotates, the tray (4) slides in the disc ejection direction, the opening / closing slide (80) pushes the open position detection switch (SW1), and the motor (M1) stops. In this state, the disc can be taken out.

[Control Operation] The present invention is characterized by the control operation of the mechanism of the disk reproducing apparatus in the above embodiment. Specifically, there are a positioning operation of the gear train (6) at the time of unloading, a confirmation operation at the time of raising / lowering the tray holder (5), and an operation at the time of initial power-on. Hereinafter, each of them will be described. The arrangement positions of the motors and switches are as shown in FIG.

(Positioning of Gear Train During Unloading) In the above unloading operation, the following problems may occur. When the loading is completed, as described above, the fitting between the tray (4) and the guide rod (40) is released, and the plate spring (44) is fitted into the concave portion (46) immediately before the completion of the unloading, and the tray ( 4) and the guide rod (40) are softly locked. However, when the guide rod (40) is slidable rearward,
When the tray (4) comes into contact with the leaf spring (44), the guide
(40) is slid backward to reach the open position without the tray (4) and the guide rod (40) being fitted. From this state, the motor
When (M1) rotates and the tray (4) and the guide rod (40) move toward the closed position, the tray (4) does not reach the normal closed position. Therefore, immediately before the completion of unloading, it is necessary to securely lock the tray (4) and the guide rod (40). As a countermeasure, the processor (200) performs the operation control shown in the flowcharts of FIGS.

First, at the start of unloading, once
The motor (M3) is rotated in the unloading direction for 00 ms (S1, S2), and it is confirmed that the closed position detection switch (SW2) is ON (S3). This operation is performed when the tray holder (5) and the tray (4) have not reached the height position to be unloaded due to a user's operation error and erroneous sensing of the sensor (SE1). This is to prevent loading. In this embodiment, the tray
Since (4) has three sheets, NO.1, NO.2, and NO.
No. 3. As shown in FIGS. 31 and 32, for example, when unloading the tray (4) to be stored in the position of No. 3, the tray of No. 1 is mistakenly loaded.
It is assumed that the tray (4) is raised to a position corresponding to (4). In step S1, the tray (4) to be unloaded collides with the tray (4a) provided at the position of No. 1, and pushes the tray (4a) backward. Opening / closing slide (8
0) No locking claw (82). Projection connected to one tray (4)
Since the tray (4) is caught on the (41), the tray (4) to be unloaded slides the opening / closing slide (80) backward through the locking claw (82) and the projection (41). Close position detection switch (S
W2) turns OFF, so the tray to be unloaded
It can be seen that (4) is not deployed at the regular height position. In this case, since the tray (4) cannot be unloaded, the processor (200) displays a mechanical error (P3).
Here, the time for rotating the motor (M3) is set to 300 ms.
This is because it is sufficient to determine whether (SW2) is ON or OFF.

In step S3, the closed position detection switch (SW2)
Remains ON, that is, when it is confirmed that the tray (4) is disposed at the regular height position, the motor (M1) is rotated to urge the opening / closing slide (80) forward (S4). ). The engagement between the locking claw (82) and the projection (41) urges the guide rod (40) forward. In this state, the motor (M3) is rotated to unload the tray (4) meshed with the gear train (6). Since the guide rod (40) is restricted from sliding backward in step S4 by the rotational torque of the motor (M1), even if the tray (4) contacts the leaf spring (44), the guide rod (40) is ) Does not move backward. Therefore, the tray (4) and the leaf spring (44) are securely locked. The motor (M3) and the gear train (6) rotate further,
When the contact wall (63) of the second gear (61) shown in FIG. 16 pushes the unloading detection switch (SW5), the rotation of the motor (M3) stops (S5, S6). The contact wall (63) contacts the edge of the concave groove (52). Since the contact wall (63) and the tray holder (5) are made of synthetic resin as described above, when the contact wall (63) comes into contact with the edge of the concave groove (52), the elasticity is reduced. Due to the repulsive force, the second gear (61) may rotate in the loading direction.
As a countermeasure, the pulse voltage shown in FIG.
3) and the following control is performed.

After the motor (M3) stops, it waits for 90 ms (S7). After the standby, the motor (M3) is again rotated in the unloading direction for 70 ms (S8, S9). After elapse of 70 ms, the motor (M3) is stopped (S10), and after waiting for 60 ms, the motor (M3) is again rotated in the unloading direction (S11, S11).
12). After elapse of 40 ms, the motor (M3) is stopped (S13, S1
4) After waiting for 30 ms, the motor (M3) is rotated in the unloading direction (S15, S16). After a lapse of 20 ms, the control operation ends (S17, S18). As described above, in the unloading completed state, the motor (M3) is intermittently driven to gradually reduce the rotation amount, so that the contact wall (63) and the edge of the concave groove (52) come into contact with each other. In addition, the second gear by the elastic repulsion of both
The displacement of (61) can be suppressed. Even with the control method described below, when the tray (4) is unloaded,
The operations from steps S1 to S19 are performed.

(Loading control when raising and lowering the tray holder) The tray holder (5) is moved from the current position to the stocker.
When raising and lowering to the height position corresponding to each tray (4) storage location in (74), the control shown in FIG. 35 is performed. First, it is confirmed that the reproduction position detection switch (SW4) is OFF (S20). This is to make it possible to confirm the height position of the tray holder (5) when the memory contents in the processor (200) are lost due to a power failure or the like. That is, if the reproduction position detection switch (SW4) is initially ON, the tray holder (5) has reached the optical head base (27), and it is understood that the tray holder (5) can only move upward thereafter. There is no mistake in the direction to rotate (M2).

If the reproduction position detection switch (SW4) is OFF, the motor (M3) is once rotated in the loading direction (S21). After 100 ms, the motor (M3) is stopped (S22, S23). After stopping the motor (M3), after 100 ms elapses (S24), the motor (M3) is reversed and the unloading control shown in the above steps S1 to S19 is performed.
(S25, S26). This is for disposing the first gear (60) at a normal rotation position when the tray holder (5) is moved up and down. That is, when an external vibration or impact is applied to the apparatus main body (1), the first gear (60) of the gear train (6) slightly shifts in the rotating direction, and the first gear (60) and the rack of the tray (4) are moved. The relative position of the part (42) may deviate from the normal position shown in FIG. In this case, when raising and lowering the tray holder (5),
Since the first gear (60) on the tray holder (5) may hit the rack (42) of the tray (4), the above operation is performed to dispose the first gear (60) in a proper position. Then, the tray holder (5) is raised and lowered smoothly. In step S21, the motor (M3) is rotated for 100 ms. However, it is needless to say that this time can be appropriately changed regardless of 100 ms.

Next, the motor (M1) is rotated to urge the opening / closing slide (80) in the closing direction (S27). When the closed position detection switch (SW2) is turned on, the rotation of the motor (M1) is stopped (S28). This is because when the tray holder (5) moves up and down, the support bracket (8) also moves up and down, so that the projection (41) connected to the tray (4) and the locking claw (82) of the opening and closing slide (80) are moved. If hit, the support bracket (8) cannot be moved up and down smoothly. Therefore, the projections (41) are arranged at regular positions to smoothly raise and lower the support bracket (8). Thereafter, the motor (M2) is rotated to raise and lower the tray holder (5) (S29). The control gear (33) rotates, and the sensor (SE
When the height position to be stopped is detected by 1), the motor
(M2) stops (S30).

(Initial control at power-on) When transporting the apparatus body (1) with the power turned off,
(4) is stored in the stocker (74), and the tray holder (5) is made to reach the optical head base (27). This state is called an “initial state”. The reason is, as mentioned above,
When the tray holder (5) reaches the optical head base (27), the shutter plate (700) is lowered to close the front opening of the stocker plate (75) (see FIG. 29). Therefore, when an impact is applied from the outside, the tray (4) can be prevented from coming off the guide rod (40) and shifting forward. When the power is turned on after the transportation is completed, or when the power is turned on again after the power failure, no information is stored in the memory of the processor (200). In this case, the processor (200) performs the initial check operation shown in FIGS.

First, the motor (M3) is rotated in the loading direction (S40). 150 ms after starting motor (M3) rotation
It is determined whether the loading detection switch (SW3) is turned on within (S41, S42). The reason why the rotation time of the motor (M3) is set to 150 ms is that if the motor (M3) is rotated by 150 ms, the O of the loading detection switch (SW3) is turned off.
This is because the time is sufficient to detect N and OFF.
If the switch (SW3) does not turn on, the tray (4) is not placed on the tray holder (5), or
When it is determined that (4) has not been sufficiently loaded on the tray holder (5), the motor (M3) is unloaded (S43). Unloading detection switch (SW5) is O
If it becomes N, the rotation of the motor (M3) is stopped (S45). At the time of this unloading operation, the above steps S1 to
The control up to S19 is performed. Loading detection switch
When (SW3) is turned on within 150 ms, the rotation of the motor (M3) is stopped because the tray (4) has been loaded into the tray holder (5) (S41, S45).
Through the above processing, it can be determined whether or not the tray (4) is placed on the tray holder (5).

Next, the motor (M1) is rotated to urge the opening / closing slide (80) in the closing direction (S46). When the lock lever (83) and the opening / closing slide (80) are engaged and the opening / closing slide (80) pushes the closing position detection switch (SW2), the motor (M1) stops (S47, S48). The reason for performing this operation is to smoothly raise and lower the support bracket 8 and the tray holder 5 as described above. After this, the tray holder (5)
Is lowered until it reaches the optical head base (27), and each tray (4) is stored in the stocker (74) to return to the initial state. Hereinafter, the operation will be described in detail.

First, the reproduction position detection switch (SW4) is set to O
It is determined whether or not N (S49), and if OFF, the tray holder (5)
Does not reach the optical head base (27). Therefore, by rotating the motor (M2), the second slide body (90)
Is advanced, and the tray holder (5) is lowered (S50). Hereinafter, when the tray holder (5) is moved up and down, the above steps S20 to S20 are performed.
It goes without saying that the control up to S31 is performed. The playback position detection switch (SW4) is turned on and the sensor (SE
When 1) detects that the tray holder (5) has been lowered, the motor
The rotation of (M2) stops (S52, S53, S54).

In step S49, a reproduction position detection switch
If (SW4) is ON, the motor (M2) is once rotated to raise the tray holder (5) (S51). When the reproduction position detection switch (SW4) is turned off, the tray holder (5) is again turned on.
Is lowered, and the operations from steps S50 to S54 are performed. The reason for performing this operation is as follows. Generally, a switch for switching between ON and OFF has an operation stroke. Therefore, the playback position detection switch (SW4) is turned on.
However, the second slide body (9
0) may slightly deviate from the normal position. For this reason, after the sensor (SE1) confirms that the second slide body (90) has been disposed at the proper position, the subsequent operation is performed.

If the loading detection switch (SW3) is OFF after the motor (M2) is stopped (S55), the unloading operation has been performed in steps S43 to S45, and the tray (4) is placed in the tray holder (5). ) Is not placed, and it can be seen that all the trays (4), (4), (4) are stored in the stocker (74). Therefore, the tray holder (5)
Returns to the initial state of reaching the optical head base (27), and the initial check operation ends. In step S55, if the loading detection switch (SW3) remains ON, it is determined that any tray (4) is placed on the tray holder (5), that is, the loading is completed. In this case, when the power is turned on again, the processor
(200) contains the tray placed on the tray holder (5).
Since information on which height position corresponds to (4) is not stored, it is not known which position the tray (4) may be returned to. In this case, the tray (4) is temporarily set to No. 1
The tray is moved up to a position corresponding to the tray (4), and is unloaded. When the tray (4) is stored in the stocker (74), a series of operations is completed. Tray (4) is stocker (74)
If not, return the tray (4) to the loading completed position, and place the tray (4) and the tray holder (5) in No. 2
After lowering to the position corresponding to the tray (4), the same operation is performed to search for a position in the stocker (74) where the tray (4) is to be stored. Hereinafter, this operation will be described in detail.

First, the motor (M2) is rotated to once raise the tray holder (5) and the support bracket (8) to a position corresponding to the No. 1 tray (4) (S56). The sensor (SE1) shown in FIG. 12 counts the number of detection holes (38) passing therethrough, and confirms that the tray holder (5) and the support bracket (8) have reached the position corresponding to the highest tray (4). Upon detection, the rotation of the motor (M2) is stopped (S57). Next, the motor (M3) and the gear train (6) are rotated to unload the tray (4) (S58). If the tray (4) to be unloaded is the tray (4a) that should be placed at the position of No. 1, the tray (4) is stored in the stocker (74) as it is. When the gear train (6) rotates and the unloading detection switch (SW5) is turned on, the motor (M
The rotation of 3) is stopped (S59, S62). After this, the motor
(M2) is rotated to lower the tray holder (5) (S6
3) When it is detected that the tray holder (5) has reached the optical head base (27) by the reproduction position detection switch (SW4) and the sensor (SE1) (S64, S65), the rotation of the motor (M2) is started. To stop. That is, it returns to the initial state.

In this case, as shown in FIGS. 31 and 32, the tray (4) to be unloaded is NO.
It is assumed that the tray is not the first tray (4a). At this time,
Since the tray (4a) is already provided at the position of No. 1, the tray (4) to be unloaded is
a) Press backward. The support bracket (8) moves to the highest position, and the projection (41) of the tray (4a) is engaged with the locking claw (82) of the opening / closing slide (80). And the closing position detection switch (SW2) is turned off (S
60). Therefore, it is detected that the tray (4) is placed at the wrong height position. This operation is the same as that described for the unloading operation of the tray (4).

The processor (200) reverses the rotation of the motor (M3) and rotates in the loading direction (S61) to load the tray (4). The loading detection switch (SW3) is turned on and the tray (4) is placed in the tray holder.
When the motor (M3) is loaded, the rotation of the motor (M3) is stopped (S66, S67). Next, since the opening / closing slide (80) is pushed backward and the closing position detection switch (SW2) remains OFF, the motor (M1) is rotated to slide the opening / closing slide (80) forward. (S68). When the closed position detection switch (SW2) is turned on, the rotation of the motor (M1) is stopped (S69, S70). In step S71, it is determined whether or not the above operation has been performed three times. If the operation has not been performed for the third time, the process proceeds to step S72. Step S72
Then, the motor (M2) is rotated to lower the tray holder (5) by one step, and the tray holder (5) is disposed at a height position corresponding to the intermediate position. Thereafter, the operations of steps S57 to S70 are repeated.

When the above operation is performed at three height positions, the tray (4) must be stored at any one of the height positions. If the tray (4) cannot be stored at any height position in the stocker (74), the processor (200) displays a mechanical error on the front panel (10) and an error occurs in the mechanical deck (100). Notify the user that
(S73). As a method of displaying a mechanical error, an error indicator lamp is provided on the front panel (10), and the indicator lamp is turned on or all operation buttons are turned on. Causes of such mechanical errors include erroneous sensing of the sensor (SE1) and tray
It is conceivable that a foreign object has been inserted into the stocker (74) into which (4) is to be inserted.
Know that repairs are needed.

The disk reproducing apparatus according to the above embodiment has the following advantages. 1. When unloading the tray (4),
The guide rod (40) is urged in the direction opposite to the unloading direction via the opening / closing slide (80). When the unloading is completed, the contact wall (63) of the gear train (6) becomes the tray holder (5).
Then, the gear train (6) is further rotated in the unloading direction. Guide rod (40) by opening and closing slide (80)
The guide rod (40) does not slide with the unloading of the tray (4) because the sliding of the tray (4) is restricted when the unloading of the tray (4) is completed. ) And soft-lock securely. Further, when the unloading is completed, the gear train (6) may slightly rotate from a normal position due to a repulsive force when the contact wall (63) collides with the tray holder (5). By rotating the gear train (6) again in the unloading direction, the gear train (6) can be deployed at a regular position. Therefore, when loading the tray (4) again, the loading operation can be performed smoothly. 2. When raising and lowering the tray (4), once the gear train
After rotating (6) in the loading direction, unloading is performed again. After the unloading operation is completed, the opening / closing slide (80) is operated to restrict the sliding of the guide rod (40). At the start of the lifting and lowering of the tray (4), even if the gear train (6) is initially displaced in the rotational direction from the original position, it is returned to the normal position. Further, the guide rod (40) is also arranged at a regular position.
Therefore, when the tray (4) and the opening / closing slide (80) move up and down, they do not hit the gear train (6) and the guide rod (40), respectively.
(4) The opening and closing slide (80) can be raised and lowered smoothly. 3. Loading detection switch at initial power-on
The tray (4) whose existence is confirmed by (SW3) is moved up and down to each height position. When the tray (4) arranged at each height position is once unloaded and collides with another tray (4), the opening / closing slide (80) connected to the tray (4) is closed by the closing position detection switch ( SW2), so the tray
It can be seen that (4) was deployed at the wrong height. Therefore, there is no need to provide a separate detecting means for checking whether or not the tray (4) is arranged at the regular height position.
The height position at which the tray (4) is to be stored can be reliably detected by simple means.

The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an apparatus main body.

FIG. 2 is a perspective view of a main part of the apparatus main body with a door opened.

FIG. 3 is a perspective view of a mechanical deck.

FIG. 4 is an exploded perspective view of the mechanical deck.

FIG. 5 is a plan view of the mechanical deck.

FIG. 6 is a left side view of the mechanical deck in a closed position.

FIG. 7 is a diagram showing an open position of the above.

8A is an exploded perspective view of a tray and a guide rod, and FIG. 8B is a view of the tray and the guide rod assembled and viewed from the direction of arrow B. FIG.

FIG. 9 is a side view of the tray holder and the tray.

FIG. 10 is a plan view showing a relationship between a tray holder and a tray at an open position.

FIG. 11 is a plan view showing a relationship at a closed position according to the embodiment.

FIG. 12 is a perspective view of a tray holder elevating mechanism.

FIG. 13 is a plan view of the same.

FIG. 14 is a partially cutaway view of the chassis.

FIG. 15 is a perspective view of a control gear and a drive gear.

FIG. 16 is a perspective view showing a state where the second gear is mounted on the tray holder.

FIG. 17A is a side view showing a state where the tray holder has been moved up and down, and FIG. 17B is a plan view when the control gear is at a reference position.

FIG. 18A is a side view showing a state where the tray holder is completely lowered, and FIG. 18B is a plan view showing the amount of rotation of the control gear at this time.

FIGS. 19 (a), (b) and (c) are plan views showing an intermittent operation of a third slide body.

FIGS. 20A and 20B are plan views showing the operation of the second slide body.

FIG. 21 is a left side view showing a relative position of a second slide body and a third slide body in an initial state.

FIG. 22 is a left side view showing a state where the second slide body has been advanced forward.

FIG. 23 (a) is a left side view showing a state in which the third slide body has been advanced, and FIG. 23 (b) is a view showing a rotational position of a control gear at this time.

FIG. 24 is a diagram illustrating a rotation angle of a control gear and a positional relationship between a tray holder and a support bracket.

FIG. 25 is a left side view showing the position of a support bracket corresponding to the lowest tray.

FIG. 26 shows a state in which the tray holder is completely lowered.
It is a left view which shows the state in which the support bracket was lifted.

FIG. 27 is a plan view showing an engagement state between a locking claw and a projection.

FIG. 28 is a side view showing the inside of the side plate.

29A is a front view when the shutter plate is fitted to the stocker plate, and FIG. 29B is a front view when the shutter plate closes the stocker plate.

FIG. 30 is a cross-sectional view of FIG. 3 taken along line AA.

FIG. 31 is a left side view showing a state where the tray is placed at an incorrect height position and unloaded.

FIG. 32 is a plan view omitting a support bracket and side plates of the above.

FIG. 33 is a flowchart showing a process when unloading a tray.

FIG. 34 is a flowchart showing a process when unloading a tray.

FIG. 35 is a flowchart showing a process when the tray holder is moved up and down.

FIG. 36 is a flowchart showing processing at the time of initial power-on.

FIG. 37 is a flowchart showing processing when initial power is turned on.

FIG. 38 is a flowchart showing processing at the time of initial power-on.

FIG. 39 is a diagram showing pulse voltages supplied to a motor when a tray is unloaded.

FIG. 40 is a side view of a conventional disk reproducing apparatus when a disk is to be inserted.

FIG. 41 is a side view showing a state in which the optical head base is opposed to the main tray in the above and can be reproduced.

FIG. 42 is a side view showing a state where the stocker is raised.

[Explanation of symbols]

 (1) Main unit (4) Tray (5) Tray holder (6) Gear train (27) Optical head base (40) Guide rod (74) Stocker

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Akihiro Yoshioka 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-63-175261 (JP, A) 60-6053058 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 17/22-17/30

Claims (3)

(57) [Claims] 1. A stocker (7) provided in an apparatus main body (1).
4), a tray (4) which is horizontally stored in a plurality of stages in the stocker (74), and on which discs are placed, and an optical head base (at the bottom of the apparatus main body (1), which reproduces the discs). Two
7), a tray opening / closing mechanism which engages with any one of the plurality of trays (4) to open and close the tray (4) between the stocker (74) and the disc discharge position, and a tray (4). ) The stocker
(74) and a transport mechanism for substantially horizontally moving between the loading completion position above the optical head base (27), a disc reproducing apparatus provided with a transport mechanism capable of ascending and descending to the loading completion position. Tray holder (5) that can transfer trays (4)
And a guide rod (40) which is softly locked to each tray (4) by a spring body and slides in the opening / closing direction.
0), the transport mechanism is provided on the tray holder (5), meshes with the tray (4), and guides the guide rod (40) during loading.
And a gear train (6) for releasing the soft locking of the tray (4) and sliding the tray (4) toward the tray holder (5). In the gear train (6), the tray (4) is completely unloaded. Sometimes, a contact wall that contacts the tray holder (5) and regulates the rotation of the gear train (6)
At the start of unloading, the guide rod (40) is urged in the direction opposite to the unloading direction by the tray opening and closing mechanism, and when the unloading is completed, the contact wall (63) is set in the tray holder.
A method for controlling a disk reproducing apparatus for further rotating the gear train (6) in the unloading direction after colliding with (5). 2. A stocker (7) provided in an apparatus main body (1).
4), a tray (4) which is horizontally stored in a plurality of stages in the stocker (74), and on which discs are placed, and an optical head base (at the bottom of the apparatus main body (1), which reproduces the discs). Two
7), a tray opening / closing mechanism which engages with any one of the plurality of trays (4) to open and close the tray (4) between the stocker (74) and the disc discharge position, and a tray (4). ) The stocker
In a disc reproducing apparatus provided with a transport mechanism for moving substantially horizontally between (74) and the loading completion position above the optical head base (27), each tray (4) is loaded with the optical head base (27). A tray holder (5), which is provided to be able to move up and down between the trays and supports one tray (4) transferred by the transport mechanism and moves up and down together with the tray (4); The tray opening / closing mechanism moves up and down in synchronization with the elevation of the tray (4).
(4) a sliding mechanism (80) that can be selectively engaged with a guide rod (40) attached to a tray (4) other than the tray (4), and the transport mechanism is provided on a tray holder (5); A gear train (6) that engages with (4) and releases the soft lock with the guide rod (40) during loading, and slides the tray (4). When the tray (4) starts moving up and down, After the gear train (6) is once rotated in the loading direction, it is unloaded again. After the unloading operation is completed, the tray opening / closing mechanism is urged in the direction opposite to the unloading direction, and the guide rod (40) is moved. A method for controlling a disk reproducing device that restricts sliding. 3. A stocker (7) provided in the apparatus main body (1).
4), a tray (4) that is horizontally stored in a plurality of stages in a stocker (74), and on which a disk is placed, an optical head base (27) for playing a disk, and a multi-stage tray (4) A tray opening / closing mechanism that engages with any one of the above and moves the tray (4) between the stocker (74) and the disc discharge position.
A transport mechanism for moving the tray (4) substantially horizontally between the stocker (74) and the loading completion position above the optical head base (27);
A tray holder that supports one tray (4) delivered by a transport mechanism and moves up and down together with the tray (4) in a disc reproducing apparatus provided to be able to move up and down between the loading completion position (5) and a loading detection switch (SW3) provided on the tray holder (5) for detecting the presence of the tray (4). The tray opening / closing mechanism is synchronized with the elevation of the tray holder (5). Ascending and descending, the tray corresponding to the elevating position of the tray holder (5)
(4) having an opening / closing slide (80) that can be selectively engaged with the tray (4) on the horizontal transition path of the opening / closing slide (80) when the tray (4) is stored in the stocker (74) by the transport mechanism. In addition, a closing position detection switch (SW
At the time of initial power-on, the tray holder (5) is once lowered to a position where the disc can be reproduced, and when the presence of the tray (4) is confirmed by the loading detection switch (SW3), the tray holder ( 5) The tray (4) is moved up and down to each height position in the stocker (74), and it is checked whether the tray (4) is displaced from the height position to be stored. When the tray (4) is once unloaded by operating the transport mechanism and collides with another tray (4a),
When the switching of the closing position detection switch (SW2) by the opening / closing slide (80) connected to the tray (4a) is detected, the tray is detected.
(4) A method for controlling a disk reproducing apparatus for detecting that the disk player is disposed at an incorrect height position.