JP3081501B2 - Disc 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 disk reproducing apparatus for reproducing information from a disk as an information recording medium. In particular, the present invention relates to a disc reproducing apparatus having a changer function capable of storing a plurality of discs and selectively reproducing a designated disc from among the discs.

[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. 29 and 31, 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. Main tray
Above (4), a clamp piece (57) for holding the disc
Are 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 worm (59) erected on the bottom 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 back, first, the user pulls out the main tray (4), places a disc D on the main tray (4), and places it on the main tray (4). Is stored in the apparatus body (1). As shown in FIG. 30, the main tray (4) is stored in the apparatus main body (1), and the main tray (4) and the optical head base (27) face each other. The clamp piece (57) descends, lightly presses and holds the center of the disc, and can reproduce. When the user operates the front panel (10) to input a signal to reproduce a desired disc in the stocker (74), the worm (59) is rotated by the drive mechanism as shown in FIG. . The stocker (74) moves up and down, and the sub-tray (58) on which the disc to be played is placed is stopped on the same plane as the main tray (4). 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.

[0004]

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. For this reason, when a disc in the user's hand is to be stored in the stocker (74) in the apparatus body (1) and the disc reproducing apparatus is reproducing another disc, the reproducing operation is temporarily stopped. I do. Thereafter, the main tray (4) must be pulled out, the disc must be replaced, and then stored, which is inconvenient. Also, during playback of the disc, other discs stored in the stocker (74) cannot be taken out. SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk reproducing apparatus in which another disk can be stored in the apparatus main body or can be taken out from a stocker while the disk is being reproduced.

[0005] The disc reproducing apparatus includes a slide body (90) for raising and lowering the tray (4) conveyed to the loading completion position by the transport mechanism, facing the optical head base (27).
The tray opening and closing mechanism is raised and lowered in synchronization with the lifting and lowering of the tray (4).
Slide body (91) with a cam groove (95)
You. The tray (4) connected to the tray opening / closing mechanism reaches the optical head base (27), and while maintaining the disc reproducible state,
The slide body (91) slides to raise the tray opening and closing mechanism,
In the raised position, the tray opening / closing mechanism is linked to the other tray (4) in the stocker (74 ) and dispenses the other tray (4).
To the discharge position.

[0006]

[Action and effect]

1. With the tray (4) reaching the optical head base (27) by the slide body (91), the tray opening / closing mechanism is raised and connected to the tray (4) stored in the stocker (74). Therefore, even during the reproduction of the disc placed on the tray (4), it is possible to raise the tray opening / closing mechanism and convey the other tray (4) stored in the stocker (74) to the disc ejection position. it can. In other words, other discs can be inserted or replaced even during playback of the disc, which is convenient for use. 2. Due to the intermittent drive of the gear (31) and the driving gear (32), the slide body (91) is lowered from the loading completion position of the tray (4) and the tray opening / closing mechanism to a position facing the lowermost tray (4). The sliding is temporarily stopped between the state in which the tray (4) reaches the optical head base (27) and the state in which the slide body (91) starts to raise the tray opening / closing mechanism. Therefore, when the tray (4) reaches the optical head base (27), the tray opening / closing mechanism is provided at a position corresponding to the lowest tray (4), and the tray (4) is opened / closed during disc playback. Then, the operation of raising the tray opening / closing mechanism and connecting the tray to the tray (4) can be performed quickly. Also, both slides (90) (9
The sliding of 1) is performed by a single motor (M) connected to the gear mechanism (3).
2), the mechanism for sliding the slide bodies (90) and (91) is simplified.

[0007]

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). In the insertion window of the front panel (10) of the apparatus body (1), a door (16) is provided pivotally supported at the lower end, and inside the door (16), as shown in FIG. 100) are provided. Door (1
6), the stocker plate (75) in the mechanical deck (100) is exposed, and a plurality of rail rods (76) are provided on the inner surface of the stocker plate (75).
Are arranged in multiple stages. 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, the tray
(4) (4) (4) is described as three sheets. Playing discs,
Playback stop and take-out are performed by operating a play button (11), a stop button (12), and an open / close button (13) provided on the front panel (10). The power to the apparatus body (1) is turned on by operating the power button (14), and the selection of the disc to be played is made by the number button (1).
5) Select and operate (15) and (15). The signal of each operation button is a processor (200) connected to the front panel (10).
The operation of the apparatus is controlled by the processor (200).

(Overall Configuration) FIG. 3 is a perspective view of the mechanical deck (100), and FIG. 17 (a) is a side view of the inside of the mechanical deck (100). The mechanical deck (100) has a pair of side plates on the chassis (2).
(7) A tray holder (5) on which one selected tray (4) is placed is provided at the back of the mechanical deck (100). An optical head base (2) having a turntable (29) and a pickup (28) is provided below the tray holder (5).
7) is provided. 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 door (1
The standby position and the reproduction position inside 6) are the positions where they have reached 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 for opening / closing each tray (4) with respect to the apparatus main body (1) is provided on a side portion of one side plate (7), and the tray opening / closing mechanism moves up and down to move each tray (4). The tray (4) reciprocates between the disc ejection position and the position stored in the stocker (74) (see FIG. 5). Also, the tray (4) on which the disc is placed is pulled into the back of the mechanical deck (100),
Lower while placed on the tray holder (5),
The disc is reproduced while (4) reaches the optical head base (27) (see FIG. 18 (a)). Further, even when the tray (4) reaches the optical head base (27), the tray opening / closing mechanism is lifted off the tray (4), and another tray (4) can be opened / closed. Hereinafter, the details will be described.

As shown in FIG. 3, each tray (4) has a rack (4) on one side of a mounting plate (430) on which a disk is mounted.
2) is formed inward. A guide rod (40) extending back and forth is detachably fitted to the outside of the one side of the tray (4). The gear train (6) provided on the tray holder (5)
2), and the tray (4) slides back and forth by rotation of the gear train (6). At the center of the tray holder (5), an opening (51)
Is established to allow the passage of the laser beam from the pickup (28) during disc reproduction. A clamp piece for covering the turntable (29) is attached to the upper surface of the tray holder (5), but is not shown.

Three projecting shafts (50), (50), (50) protrude from the side surface of the tray holder (5). The protruding shaft (50) (50) (50)
Are fitted in first vertical holes (71), (71), (71) formed in the side plate (70), and the tray holder (5) is provided to be able to move up and down. Outside the side plate (70), a plate-shaped first slide body (9) is slidably provided back and forth, and the protruding shafts (50) and (50) of the tray holder (5) are provided.
Of (50), two penetrate the first vertical holes (71) and (71) and
The cam groove (93) formed in the slide body (9) is fitted. A guide plate (77) is attached inside the left side plate (7), and the three trays (4), (4), (4) are guide plates.
(77) and the stocker plate (75) are fitted and supported. Therefore, the stocker (74) in this embodiment is
5) and a guide plate (77). FIG.
FIG. 4 is a sectional view taken along line AA of FIG. 3. Each tray (4)
Are stored in the stocker plate (75) and the guide plate (77) at predetermined intervals.

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 place a disk having a small recording capacity and an outer diameter of 8 cm in the first concave portion (400), the first concave portion (400) is concentric with the first concave portion (400) and the diameter is larger than that of the first concave portion (400). A small second recess (410) is formed. Here, both recesses (40
In (0) and (410), a notch (420) for reading information recorded on the disk by a pickup is formed. 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). For convenience of description, illustration of various gears and switches is omitted in FIG. 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 on the chassis (2) so as to be slidable back and forth. The second
The cam groove of the first slide body (9) is provided in the slide body (90).
(93) A cam groove (94) which is symmetrical with (93) 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 pivot lever (92) is pivotally supported at the center at the lower surface of the chassis (2), and has both ends engaged with elongated holes formed in the first slide body (9) and the second slide body (90), respectively. I have. The slide bodies 9 and 90 are driven in opposite directions. As the first and second slide bodies (9) and (90) slide back and forth, the tray holder (5) moves along the cam grooves (93), (93) and (94) and the first vertical hole (71). Go up and down. Tray (4) is the gear train (6)
The tray (4) and the tray holder (5) are lowered after being transported forward and placed on the tray holder (5). The tray (4) reaches the optical head base (27), and the disc can be played.

The left side plate (7) has the same first plate as the side plate (70).
Vertical holes (71), (71), (71) and second vertical holes (72), (72), (72) narrower than the first vertical hole (71) are respectively opened. A third slide body (91) is attached to the outside of the side plate (7) so as to face the side plate (7). 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. Third
On the outside of the slide body (91), a support bracket made of resin
(8) is provided facing the side plate (7). Support bracket
From (8), three pins (81), (81) and (81) project inward,
Two of the pins (81) and (81) pass through the cam grooves (95) and (95), respectively, into the second vertical holes (72) and (72), and the other pin into the second vertical hole (72). Fit each. An opening / closing slide (80) is attached to the outside of the support bracket (8), and the opening / closing slide (80) extends to the front and rear of the support bracket (8) and is provided with a guide hole (87).
Fits. As described later, the opening / closing slide (80) slides forward along the guide hole (87) to convey the tray (4) to a position where it is stored in the stocker plate (75) and slide backward. Then, the tray (4) is moved in the disc ejection direction.

Accordingly, the tray (4) is moved between the position for ejecting the disk shown by the dashed line in FIG. 5, the position stored in the stocker plate (75) shown by the solid line, and the position waiting above the optical head base (27). To move horizontally. The tray (4) further descends from a standby position above the optical head base (27) toward the optical head base (27). In the following description, the tray
The position where (4) is stored in the stocker (74) is the closed position, and the tray is
The position where (4) slides in the disk ejection direction is defined as an open position. The loading of the tray (4) sliding toward the tray holder (5) is performed.
Sliding away from (5) toward the stocker (74) is called unloading.

In FIG. 5, M1 to M3 are motors for driving the respective mechanical parts, SW1 to SW4 are switches for detecting the operation end position of the mechanical parts, and SE1 is a sensor comprising a photocoupler. The opening / closing operation of the tray (4) is performed by the motor (M1), the raising / lowering operation of the tray holder (5) is performed by the motor (M2), and the loading and unloading operations of the tray (4) are performed by the motor (M3). 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.
It protrudes outward through (7). An intermediate gear (84) and a pulley (85) are provided at the center of the support bracket (8) so as to mesh with each other. The intermediate gear (84) meshes with the opening / closing slide (80), and the pulley (85) is connected to a rotating shaft (88) of the motor (M1) via a belt (86). The opening / closing slide (80) has a front end fitted into the guide hole (87), and is slid back and forth by the rotation of the motor (M1) via the pulley (85) and the intermediate gear (84). A closing position detection switch (SW2) and an opening position detection switch (SW1) are provided on a transition path of the opening / closing slide (80), and the closing position detection switch (SW2) is located at an upper end of the opening / closing slide (80). Detection switch (SW1) slides open / close
Each is pushed in at the lower end of (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 spring-biased in a counterclockwise direction, and is fitted to the opening / closing slide (80) provided at the closed position,
Prevents displacement of the open / close slide (80) when an external impact is applied. 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 distal end of the guide rod (40), and the locking claw (82) fits into the projection (41) (see FIG. 27). The support bracket (8) is formed with a groove (89) in which the protrusion (41) fits, orthogonal to the guide hole (87). In this embodiment, since the three trays (4) are provided, the guide rod (40) and the projection (41) are also provided at three upper and lower positions,
As shown in FIG. 25, the projections (41) are aligned on a straight line in the closed position. The protrusion fitted to the locking claw (82) is in the concave groove (89).
The projections (41) and (41) other than (41) are fitted to prevent the tray (4) other than the tray (4) to be slid back and forth 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 protrusion (4
A restraining shaft (43) is protruded forward of 1), and the restraining shaft (43) contacts the front end of the long hole (78) of the guide plate (77) at the closed position. The guide rod (40) has a receiving surface (4) for supporting the tray (4).
9) is projected 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) has a convex portion (45) provided inward at the center, and a concave portion (46) in which the convex portion (45) fits is formed on the side of the tray (4). Leaf spring (44)
The tray (4) is softly locked to the guide rod (40) by the elastic force of (1). FIG. 8B 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. The lower end of the rack (42) projects 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 (42). FIG. 10 is a plan view of the tray (4) and the tray holder (5) in the closed position. At the substantially center of the rack portion (42) of the tray (4), one large tooth (48) having a larger tooth thickness than other teeth is formed. This is, as described later, the gear train (6) of the tray holder (5) and the rack section.
This is to prevent the tray (4) from sliding if the relative position is shifted when assembling (42).

When the opening / closing slide (80) slides rearward from the closed position shown in FIG. 6 by the rotation of the motor (M1), the engagement between the locking claw (82) and the projection (41) causes the tray (4) to move. ) Is the guide rod (4
Slides in the opening direction together with 0). As shown in FIG. 7, when the open / close slide (80) pushes the open position detection switch (SW1), the rotation of the motor (M1) stops, and in this state, the tray
A disk can be placed on (4). The user operates the front panel (10) from the open position to remove the disc from the stocker (7).
When a signal to be stored in 4) is input, the opening and closing slide (80) slides forward due to the rotation of the motor (M1). Tray (4)
And the guide rod (40) also slides forward. The opening and closing slide (80)
When the closing position detection switch (SW2) is pushed in, 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 driven 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 rack portion (40) of the guide rod (40) in the closed position. The tip of 42) is concave (6
Fits in 2). FIG. 9 is a left side view of the tray holder (5) and the tray (4). A guide piece (53) for supporting the tray (4) protrudes from the inside of the side of the tray holder (5). The first gear (60) meshes with the second gear (61), and the upper surface of the first gear (60) is provided higher than the upper surface of the second gear (61). tray
In (4), the lower end of the rack (42) is slid while being supported by the guide piece (53) while being fitted to the upper end of the first gear (60).
As described above, since the lower end of the rack portion (42) of the tray (4) is lower than the mounting surface (430), 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 on the rotation transition path 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. Thus, even if the motor (M3) rotates more than the normal rotation for some reason, the tray (4) is prevented from sliding more than the normal movement amount.

At the back of the tray holder (5), a 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.

During 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 part (42) and the first gear (60) mesh with each other, and slide the guide rod (40) and the tray (4) forward. Since the stop shaft (43) of the guide rod (40) is in contact with the front end of the elongated hole (78) of the guide plate (77), sliding is restricted. The soft engagement between the guide rod (40) and the tray (4) by the leaf spring (44) is released, 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 tray (4) is connected to the guide piece (5).
It is guided by 3) and keeps moving forward while covering the gear train (6). As shown in FIG. 11, when the tray (4) pushes the loading detection switch (SW3), the rotation of the motor (M3) stops. In this state, the tray (4) is placed in the tray holder.
With (5), it becomes possible to go up and down. If the second gear (61) is in the closed position and the contact wall (63) is mounted so as not to push the unloading detection switch (SW5),
When the first gear (60) rotates, the recess (62) does not mesh with the large tooth (48), so that loading cannot be performed. Therefore, the second gear (6
It can be seen that 1) is not installed in the proper state. The gears in this embodiment are all made of synthetic resin such as polyacetal.

(Tray Elevating Mechanism) FIG. 12 is a perspective view of the mechanical deck (100) without the tray (4) and the optical head base (27), and FIG. 13 is a first slide body (9) and a second slide body. It is a top view of the mechanism which slides (90). Chassis (2)
A gear mechanism (3) connected to the motor (M2) is provided on the rear side from the upper central portion, and the gear mechanism (3) is a chassis.
It fits into the recess (20) formed in (2). The gear at the downstream end of the gear mechanism (3) is provided by overlapping two gears (30) and (31), and the upper gear (30) is provided on the rack (9) of the second slide body (90).
6), 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 (3) for positioning when assembling to the chassis (2).
1a) has been established.

From the upper surface of the drive gear (32) meshing with the lower gear (31), two positioning projections (34) (34a) project,
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 concentrically. The left end of the concave portion (20) of the 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 grooves (22) and (22) corresponding to both ends of the rotating lever (92).
Both ends of (2) penetrate the arc-shaped grooves (22) and (22), and are fitted to the first slide body (9) and the second slide body (90). The rotation lever (92) is spring-biased in the counterclockwise direction, and the first slide body is rotated.
(9) is urged forward, and the second slide body (90) is urged rearward. A sensor (SE1) composed of a photocoupler is mounted on the chassis (2) so as to sandwich the detection hole (38). The sensor (SE1) is a detection hole that passes when the control gear (33) rotates.
(38) is counted, and the processor (200) shown in FIG. 1 reads the count information, temporarily stores it in the memory, and detects the rotational position of the control gear (33). The sliding of the first and second slides (9) and (90) is controlled by a sensor (SE1).
It is controlled by detecting the rotation angle of (33).

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), and the playback position detection switch (SW4) is connected to the tip of the second slide body (90). , The rotation of the motor (M2) stops. As shown in FIGS. 12 and 15, the control gear (33)
Formed in a step, a large gear (36) and a small gear (37) on the lower surface of the collar (35)
Is formed. The detection holes (38) (38) are opened in the flange (35). Positioning protrusions (34) (3
Holes (380) and (380a) into which 4a) fits are opened. Small gear
(37) meshes with the upper gear (30), and a play surface (370) having no tooth surface is formed on the peripheral surface over about 180 °.

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), a kick-out tooth (330) kicked by the mating gear protrudes sideways, and the kick-out tooth (330) is opened.
Fits (340). The play surfaces (320) and (370) are formed to have substantially the same diameter as the tooth bottom, respectively, and constitute a Geneva mechanism with the mating counterpart gear to be fitted.

The cam groove (9) opened in the second slide body (90)
4) are four flat parts (94
d) (94c) (94b) (94a) are connected by inclined grooves. Therefore,
When the second slide body (90) slides forward by the rotation of the motor (M2), the tray holder (5) fitted into the cam groove (94).
Descends. As shown in FIGS. 12, 17 and 18,
The four flat portions (94d) (94c) (94b) (94a) have three trays.
The height position (4) and the position where the tray holder (5) is placed on the optical head base (27). That is, FIG.
As shown in (a), when the protruding shaft (50) of the tray holder (5) is engaged with the flat portion (94a) at the highest position, the tray holder (5) moves the tray (5 4). At this time, the control gear (33) has a sensor (S) as shown in FIG.
E1).

When the motor (M2) is energized and the control gear (33) rotates counterclockwise, the rotation of the gear (30) causes the second gear to rotate.
The slide body (90) slides forward. The first slide body (9) slides rearward via the rotation lever (92). The tray holder (5) is moved by the cam grooves (9) by the sliding of both slide bodies (9) and (90).
3) descend along (93) (94). FIG. 24 shows the relationship between the rotation angle of the control gear (33) and the height position of the tray holder (5).
The control gears (33) are respectively 76.2 ゜ and 139.4 from the reference position.
゜ When rotated, the protruding shaft (50) of the tray holder (5)
Fit to (94b) and (94c). When the control gear (33) rotates 220.5 ° from the reference position, as shown in FIG.
(50) fits into the lowest flat part (94d), and the tray holder
(5) reaches the optical head base (27). That is, the tray holder (5) reaches the reproduction position.

(Support bracket elevating mechanism) Gear mechanism (3)
Is mounted on the chassis (2) as follows. FIG.
As shown in FIG. 9 (a), the third slide body (91) is pulled rearward, and the rack portion (97) and the reference hole (31a) of the lower gear (31) are drawn.
And attach them together. At this time, the concave surface (3
10) and (310) do not face the rack portion (97) side of the third slide body (91), and one of the ejection teeth (330) faces the drive gear (32).
Next, one play surface (320) connects the drive gear (32) to the
(330). At this time, the positioning projections (34) (34a) are located on a line orthogonal 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), the clockwise end of the play surface (370)
Position the holes (380) and (380a) so that they face the positioning protrusions (34).
Install according to (34a). When the motor (M2) rotates and the control gear (33) rotates counterclockwise, the play surface (370) and the concave surface (300) of the gear (30) come off. Gear (30)
The kickout tooth (330) is kicked by the end face of the opening (340),
It rotates clockwise and meshes with the control gear (33) to rotate.
Control gear (33) and drive gear (32) are positioning protrusions (34) (34a)
Therefore, the gear (31) also meshes with the drive gear (32) and rotates. The second and third slide bodies (90) and (91) advance at the same speed.

The control gear (33) rotates 139.4 ° from the reference position, that is, the tray holder (5) is the lowermost tray (4).
As shown in FIG. 19B, the play surface (320) of the drive gear (32) and the concave surface of the gear (31)
The gear (31) stops rotating once. Therefore, the third slide body (91) also temporarily stops. Control gear (33)
20 continues to rotate, the second slide body (90) slides, and FIG.
As shown in (b), 220.5 °, that is, the tray holder (5)
Is in contact with 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 gear (30) are disengaged. The concave surface (300) faces. Therefore, the second slide body (90) stops. Hereafter, the control gear (3
Even if 3) 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). Then, the third slide body (91) slides again, starting to mesh with the gear (31) and the drive gear (32). 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 a 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, the three pins (81) (81) (81) protruding from the support bracket (8)
Of the two, the two pins (81) and (81)
The side plate (7) passes through the cam grooves (95) (95) of the slide body (91).
, And only vertical sliding is allowed.
The other pin (81) fits in the second vertical hole (72). Each cam groove
(95) shows three flat portions (95
c) A front half portion where (95b) and (95a) are connected by an inclined groove, and a rear half portion having a shape obtained by inverting the front half are integrally provided, and have a substantially V-shape. The inclination angle of the inclined groove is the first and second slide bodies
(9) The inclination angles of the inclined grooves of the cam grooves (93) and (94) of (90) are the same. The three flats (95c) (95b) (95a) have three trays
(4) It corresponds to the height position of (4) and (4). That is, first,
Like the second slide body (9) (90), the highest flat part (95a)
Corresponds to the tray (4) at the highest position, and the lowermost flat portion (95
c) 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) advance synchronously. 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 by 20.5 ° 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 the rotation reaches 44.6 °, the sensor (SE1) detects the passage of the detection hole (38) farthest clockwise from the reference position, and 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 and closing slide (80), and the locking claw (8) of the opening and 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 opened and closed by the opening and closing slide (80) can be changed by raising and lowering the support bracket (8). The feature of this embodiment is that even when the disc is being reproduced with the tray holder (5) facing the optical head base (27), the third slide body (91) is further advanced, so that the support bracket (8) Can be raised, and the disc can be taken out by operating the opening / closing slide (80). Hereinafter, each operation will be described.

(Refer to FIG. 1, FIG. 3, FIG. 5 to FIG. 7) When a disc is inserted 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.

(Loading Operation See FIGS. 10 and 11)
Next, when playing the disc stored in the stocker (74), the play button (11) is operated. The motor (M3) rotates,
The rotation of the second gear (61) of the gear train (6) turns off the unloading detection switch (SW5). Tray (4)
Is released from the soft engagement with the guide rod (40), the front end of the tray (4) pushes the loading detection switch (SW3), and the motor (M3) stops. The tray (4) is fitted into the tray holder (5), and reaches a loading completed state.

(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 detection holes (38) passing therethrough and confirms the position of the tray holder (5). When the second slide body (90) pushes the reproduction detection switch (SW4) and the sensor (SE1) detects that the tray holder (5) has reached the optical head base (27), the motor is turned on.
The rotation of (M2) is stopped. The disc placed on the tray (4) can be reproduced.

When a disc is stored in the stocker 74 in advance, the number button 15 is operated to select the tray 4 on which the disc to be reproduced is placed. Processor
(200) first determines whether or not the tray holder (5) faces the desired tray (4) from the count number of the detection holes (38) stored in the memory. M3) is energized to load the tray (4). If not, rotate the motor (M2) and set the tray holder (5).
Is raised and lowered, and the motor (M3) is energized so that the tray holder (5) faces the desired tray (4), and the tray (4) is loaded.

(Operation for Ejecting Disk 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 state of being pressed, first enter the number of the disc to be removed, and then
Operate (13). As an example, a case is shown in which a disc placed on the lowest tray (4) is played and a disc placed on the highest tray (4) is ejected. As shown in FIGS. 24 and 25, the third slide body (91) slides from the position where the tray holder (5) faces the lowermost tray (4) to the optical head base (27). As a result, the pin (81) of the support bracket (8) remains fitted in the lowermost flat portion (95c) of the cam groove (95). The projections (41) of the trays (4) and (4) at the highest position and the middle position respectively have support brackets (41).
It fits in the concave groove (89) of (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 claw (82) engaged with the projection (41) corresponding to the lowermost tray (4) is As a result, the engagement is released, and as shown in FIG. 26, the engagement is made with the projection (41) corresponding to the tray (4) at the highest position. In this state, open and close the slide
By sliding (80) toward the open position, the disc in the tray (4) arranged at the highest position can be taken out. That is,
While playing a disc, you can remove another disc. In addition, the first for raising and lowering the tray holder (5),
The second slides (9) and (90) and the third slide (91) for raising and lowering the support bracket (8) can be driven by a single motor (M2), which leads to simplification of the mechanism.

Incidentally, the unloading operation follows the reverse operation path. When storing the disc that has been played back in the stocker (74), enter the number of the tray (4) on which the disc was placed with the number button (15), and open / close the button (13).
Operate. 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. In this embodiment, the number of trays (4) is three, but it is needless to say that three or more trays may be used. Further, a roller (not shown) may be fitted to the protruding shaft (50) to improve the slidability with the cam grooves (93), (93), (94).

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 appended 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 diagram illustrating a relationship between a tray holder and a tray at an open position.

FIG. 11 is a diagram 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 diagrams showing an intermittent operation of a third slide body.

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

FIG. 21 is a diagram showing a relative position between a second slide body and a third slide body in an initial state.

FIG. 22 is a view showing a state in which the second slide body has advanced forward.

FIG. 23A is a diagram showing a state in which the third slide body has been advanced, and FIG. 23B is a diagram 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 diagram illustrating a position of a support bracket corresponding to a lowermost tray.

FIG. 26 shows a state in which the tray holder is completely lowered.
It is a figure 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 drawing of FIG. 3 taken along line AA.

FIG. 29 is a diagram when a disc is to be inserted in a conventional disc reproducing apparatus.

FIG. 30 is a view showing a state in which an optical head base is opposed to the main tray in the above and can be reproduced.

FIG. 31 is a view showing a state where the stocker is raised.

[Explanation of symbols]

 (1) Apparatus body (3) Gear mechanism (4) Tray (27) Optical head base (31) Gear (32) Drive gear (74) Stocker (90) Second slide (91) Third slide (95) Cam groove

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shoji Arikuma 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-6-119703 (JP, A) ( 58) Field surveyed (Int. Cl. ⁷ , DB name) G11B 17/22-17/30

Claims (2)

(57) [Claims] 1. A stocker provided in an apparatus main body (1).
(74), a tray (4) which is horizontally stored in a plurality of stages in the stocker (74), and on which a disc is placed, an optical head base (27) for playing the disc, and a plurality of trays (4). ) And a tray opening and closing mechanism for moving the tray (4) between the stocker (74) and the disc discharge position by engaging with one of the trays (4) and the tray (4) with the stocker (74) and the optical head base ( 27) In a disc reproducing apparatus provided with a transport mechanism for moving substantially horizontally to an upper loading completion position, the tray (4) transferred to the loading completion position by the transport mechanism is transferred to the optical head base (27). The slide body (90) that moves up and down in opposition, and the tray opening and closing mechanism raises and lowers the tray (4)
Slide with a cam groove (95) that moves up and down in synchronization with
The tray (4) connected to the tray opening / closing mechanism reaches the optical head base (27), and the slide body (91) slides to raise the tray opening / closing mechanism while maintaining a disk reproducible state. In this raised position, the tray opening / closing mechanism is linked to the other tray (4) in the stocker (74 ) and ejects the other tray (4) to the disc.
A disc reproducing apparatus characterized by being moved to an outgoing position . 2. The two slide bodies (90) and (91) are a single motor.
The gear mechanism (3) was linked with the gear mechanism (3) driven by (M2), and the gear mechanism (3) was lowered from the loading completion position of the tray (4) and the tray opening / closing mechanism to a position facing the lowest tray (4). Between the state and the state in which the tray (4) reaches the optical head base (27) and the slide body (91) starts to raise the tray opening / closing mechanism, a gear () for temporarily stopping the slide body (91) from sliding. 2. The disc reproducing apparatus according to claim 1, comprising a drive gear (32) and a drive gear (32).