JPH08297904A - Disk reproducing device - Google Patents

Abstract

PURPOSE: To obtain a disk reproducing device which can house a disk in its main body even when the device is reproducing information from another disk. CONSTITUTION: A disk reproducing device is provided with an opening/closing slide 80 which moves a disk tray 4 between a stocker 74 and disk discharging position and a gear train 6 which moves the tray 4 between the stocker 74 and a loading completing position in the horizontal direction. The reproducing device is also provided with a second sliding body 90 which moves the tray 4 moved to the loading completing position in the vertical direction while the tray 4 is faced to an optical head base 27 and third sliding body 91 which is moved in the vertical direction synchronously to the vertical movement of the tray 4 and, when the tray 4 reaches the optical head base 27, is further slid so as to raise the opening/closing slide 80 and connects the slide 80 to another tray 4 in the stocker 74.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus for reproducing information on a disc as an information recording medium. In particular, the present invention relates to a disc reproducing apparatus having a changer function capable of accommodating a plurality of discs and selectively reproducing a designated disc from 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 reproduces them (see Japanese Patent Publication No. 7-7560).
As shown in FIGS. 29 and 31, this is the device body (1).
A stocker (74) capable of accommodating a plurality of discs arranged vertically in multiple stages is provided in the inner portion, and a sub tray (58) on which each disc D is placed is provided in the stocker (74). An optical head base (27) for reproducing a disc is provided inside the front panel (10) of the device body (1), and the outside and inside of the device body (1) are placed above the optical head base (27). A reciprocating main tray (4) is provided. Main tray
A clamp piece (57) for holding the disc is provided above (4).
However, it 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 disc is placed is pulled into the main body (1) of the apparatus, and the clamp piece (57) is lowered while the disc D faces the optical head base (27). It is held on the base (27) and can be regenerated.
The description of the mechanism for moving the clamp piece (57) up and down is omitted. The stocker (74) is engaged with a worm (59) erected on the bottom surface of the apparatus main body (1) and is vertically movable.

When a user places a new disc on the main tray (4) for reproduction, the main tray (4) is first pulled out, the disc D is placed, and the main tray (4) is placed. Is stored in the device body (1). As shown in FIG. 30, the main tray (4) is housed 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 and the center part of the disc is lightly pressed and held for playback. When the user operates the front panel (10) and inputs a signal for reproducing 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 reproduced is placed is positioned in the same plane as the main tray (4) and stops. In this state, the disc is transferred from the sub tray (58) to the main tray (4) by a transport mechanism (not shown),
(4) moves horizontally above the optical head base (27), and reproduction is possible as described above.

[0004]

In the conventional disc reproducing apparatus, since the main tray (4) on which the disc is placed is located on the optical head base (27) during disc reproduction, the disc is reproduced. Main tray (4)
You can't move only. For this reason, when the disc at the user's hand is to be stored in the stocker (74) in the device body (1), when the disc playback device is playing another disc, the playback operation is temporarily stopped. To do. After this, the main tray (4) must be pulled out and the disc must be replaced before being stored, which is inconvenient. Further, while the disc is being played back, another disc stored in the stocker (74) cannot be taken out. SUMMARY OF THE INVENTION It is an object of the present invention to provide a disc reproducing apparatus capable of accommodating another disc in the main body of the apparatus or taking it out from the stocker even while the disc is being reproduced.

[0005]

DISCLOSURE OF THE INVENTION A disc reproducing apparatus has a tray arranged at a loading completion position by a transport mechanism.
The slide body comprises a slide body (90) for raising and lowering (4) facing the optical head base (27), and a slide body (91) for raising and lowering the tray opening / closing mechanism in synchronization with the raising and lowering of the tray (4).
In (91), the slide body (91) is connected to the tray opening / closing mechanism and the tray (4) reaches the optical head base (27).
By further sliding, the cam groove (95) for raising the tray opening / closing mechanism is opened, and the tray opening / closing mechanism is connected to the other tray (4) in the stocker (74) at the raised position. In addition, both slide bodies (90) (91) are a single motor (M2)
Connected to the gear mechanism (3) driven by the gear mechanism (3)
Is in a state where the tray (4) and the tray opening / closing mechanism are lowered from the loading completion position to a position facing the lowest tray (4), the tray (4) reaches the optical head base (27), and the slide body (91 ) Is a state in which the tray opening / closing mechanism starts to move upward, and a gear (31) and a drive gear (32) for temporarily stopping sliding of the slide body (91).

[0006]

[Action and effect]

1. When the tray (4) has reached the optical head base (27) by the slide body (91), the tray opening / closing mechanism ascends and is connected to the tray (4) stored in the stocker (74). Therefore, even when the disc loaded on the tray (4) is being reproduced, the tray opening / closing mechanism can be raised to convey another tray (4) stored in the stocker (74) to the disc ejecting position. it can. In other words, another disc can be loaded or exchanged during playback of the disc, which is convenient for use. 2. By the intermittent drive of the gear (31) and the drive gear (32), the slide body (91) is lowered from the loading completion position to the position where the tray (4) and the tray opening / closing mechanism face the lowest tray (4). The sliding is temporarily stopped between the closed 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. Therefore, when the tray (4) reaches the optical head base (27), the tray opening / closing mechanism is arranged at a position corresponding to the lowest tray (4), and the tray (4) is opened / closed during the disc reproduction. At this time, the operation of raising the tray opening / closing mechanism and connecting it to the tray (4) can be performed quickly. Also, both slides (90) (9
Sliding of 1) is a single motor (M
2), the mechanism for sliding the slide bodies (90) (91) is simplified.

[0007]

An 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 the front, and the direction in which the disc is ejected is the rear. FIG. 1 is a perspective view of the apparatus body (1). At the insertion window of the front panel (10) of the device body (1), a door (16) is provided with its lower end pivotally supported, and inside the door (16), as shown in FIG. 100) is provided. Door (1
When 6) is opened, 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 rail rod (76) accommodates a tray (4) on which a disc is placed, and each tray (4) is horizontally arranged in a plurality of stages. Tray in this embodiment
(4) (4) (4) will be described as three sheets. Disc playback,
The reproduction is stopped and taken out by operating the reproduction button (11), the stop button (12) and the open / close button (13) provided on the front panel (10). To turn on the power to the device body (1), operate the power button (14), and select the disc to play by pressing the number button (1
5) Select (15) and (15) to perform. Signals from the above operation buttons are sent to the processor (200) connected to the front panel (10).
And the operation of the apparatus is controlled by the processor (200).

(Overall Structure) 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) is a pair of side plates on the chassis (2).
(7) (70) is provided, and a tray holder (5) on which one selected tray (4) is placed is provided in the inner part of the mechanical deck (100). Below the tray holder (5) is an optical head base (2) having a turntable (29) and a pickup (28).
7) is provided. In the following description, the ejection position of the tray (4) or the disc is the position where they are projected to the outside of the mechanical deck (100) as shown by the dashed line in FIG. 3, 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 accommodation 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 the 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 accommodated 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),
Drop the tray holder (5) while it is still
The disc is reproduced with (4) reaching the optical head base (27) (see FIG. 18 (a)). Further, even when the tray (4) has reached the optical head base (27), the tray opening / closing mechanism is detached from the tray (4) and lifted to open / close another tray (4). 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 disc is mounted.
2) is formed inward. A guide rod (40) extending in the front-rear direction is detachably fitted to the outside of the one side portion of the tray (4). The gear train (6) provided on the tray holder (5) is
The tray (4) slides back and forth by meshing with 2) and rotation of the gear train (6). At the center of the tray holder (5) is an opening (51)
Is opened to allow the laser beam from the pickup (28) to pass through when playing the disc. A clamp piece that covers the turntable 29 is attached to the upper surface of the tray holder 5, but the illustration is omitted.

Three protruding shafts (50) (50) (50) are projected from the side surface of the tray holder (5). The salient shaft (50) (50) (50)
Fits in the first vertical holes (71), (71), (71) formed in the side plate (70), and the tray holder (5) is vertically movable. A plate-shaped first slide body (9) is provided on the outer side of the side plate (70) so as to be slidable back and forth, and the protruding shafts (50) (50) of the tray holder (5) are provided.
Two of the (50) penetrate the first vertical holes (71) (71) to
It fits in the cam groove (93) formed in the slide body (9). A guide plate (77) is attached to the inside of the left side plate (7), and the three trays (4), (4) and (4) are the guide plates.
It is fitted and supported between (77) and the stocker plate (75). Therefore, the stocker (74) in this embodiment is the stocker plate (7
5) and guide plate (77). FIG. 28 shows
It is sectional drawing which cut | disconnected FIG. 3 by the AA line. Each tray (4)
Are stored in the stocker plate (75) and the guide plate (77) at a predetermined interval.

As shown in FIG. 3, the mounting plate (4) of the tray (4) is
A first recess (400) having a diameter substantially the same as the outer diameter (12 cm) of a standard size disc is formed inside the disc 30. When the disc is placed, the upper surface of the disc and the tray (4 The depth of the first concave portion (400) is set so that the upper surfaces of () are flush with each other. 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 disk is concentric with the first recess (400) and the diameter is larger than that of the first recess (400). A second small recess (410) is formed. Here, both recesses (40
Notches (420) for reading information recorded on the disc with a pickup are formed in 0) and 410. Both the tray 4 and the tray holder 5 are made of synthetic resin in view of weight reduction of the entire apparatus.

FIG. 4 is an exploded perspective view of a part of the mechanical deck (100). For convenience of explanation, description 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, which are arranged in three stages vertically. 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 slide body (90) has a cam groove for the first slide body (9).
(93) A cam groove (94) symmetrical to the front and rear of (93) is opened.
The first slide body (9) and the second slide body (90) are connected by a rotation lever (92) attached to the lower surface of the chassis (2). The turning lever (92) is pivotally supported at its central portion on the lower surface of the chassis (2), and its both ends are engaged with elongated holes formed in the first slide body (9) and the second slide body (90), respectively. There is. Both slide bodies (9) and (90) are driven in opposite directions to each other. As the first and second slide bodies (9) and (90) slide back and forth, the tray holder (5) is moved along the cam grooves (93) (93) (94) and the first vertical hole (71). Move up and down. The tray (4) has the gear train (6)
Then, after being conveyed forward and placed on the tray holder (5), the tray (4) and the tray holder (5) descend. The tray (4) reaches the optical head base (27), and the disc can be reproduced.

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 holes (71) are opened, respectively. 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 by integrally including a horizontal surface and a vertical surface, the horizontal surface contacts the lower surface of the chassis (2), and cam grooves (95) (95) are formed in the vertical surface. Third
On the outside of the slide body (91), a resin support bracket
(8) is provided facing the side plate (7). Support bracket
Three pins (81) (81) (81) project inward from (8),
Two of the pins (81) (81) penetrate the cam grooves (95) (95) into the second vertical holes (72) (72), and the other one into the second vertical hole (72). Fit in each. An opening / closing slide (80) is attached to the outside of the support bracket (8), and the opening / closing slide (80) extends in the support bracket (8) in the front-rear direction and is provided with a guide hole (87).
To fit. As will be described later, the open / close slide (80) slides forward along the guide hole (87) to convey the tray (4) to the position where it is stored in the stocker plate (75) and slide backward. By doing so, the tray (4) is moved in the disc ejection direction.

Therefore, the tray (4) is located between the disk ejection position shown by the one-dot chain 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). Move horizontally. The tray (4) further descends from the position waiting 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 closed and the tray is
The open position is the position where (4) slides in the disc ejection direction. Also, the tray (4) is slid toward the tray holder (5) for loading, and the tray (4) is for the tray holder (5).
Sliding from (5) toward the stocker (74) is called unloading.

In FIG. 5, M1 to M3 are motors for driving the mechanical parts, SW1 to SW4 are switches for detecting the operation end positions of the mechanical parts, and SE1 is a sensor composed of a photocoupler. The motor (M1) performs the opening / closing operation of the tray (4), the motor (M2) performs the lifting operation of the tray holder (5), and the motor (M3) performs the loading / unloading operation of the tray (4). Hereinafter, the mechanism controlled by the motor and the switch will be described in detail.

(Tray Opening / Closing Mechanism) FIGS. 6 to 7 are left side views of the mechanical deck (100). For convenience of explanation, only the highest tray (4) is shown. Inside the side plate (7), the motor (M
1) is attached, and the rotation 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 in mesh with each other at the center of the support bracket (8). The intermediate gear (84) meshes with the opening / closing slide (80), and the pulley (85) is connected to the rotating shaft (88) of the motor (M1) via the belt (86). A front end portion of the opening / closing slide (80) is fitted in the guide hole (87), and is slid back and forth via the pulley (85) and the intermediate gear (84) by the rotation of the motor (M1). A closed position detection switch (SW2) and an open position detection switch (SW1) are provided on the transition path of the opening / closing slide (80), and the closing position detection switch (SW2) is located at the upper end of the opening / closing slide (80). Detection switch (SW1) slides open / close
It is pushed in at the lower end of (80).

On the support bracket (8) is an opening / closing slide.
A lock lever (83) is provided facing the upper end of the (80). The lock lever (83) is spring-biased in the counterclockwise direction and is fitted to the opening / closing slide (80) arranged in the closed position,
Prevents displacement of the open / close slide (80) when external impact is applied. The locking claw (82) projects inward from the opening / closing slide (80) and fits into the guide hole (87) of the support bracket (8). The 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). The support bracket (8) is formed with a groove (89) orthogonal to the guide hole (87) into which the protrusion (41) fits. In this embodiment, since three trays (4) are provided, the guide rods (40) and the protrusions (41) are also arranged at three positions above and below,
As shown in FIG. 25, the protrusions (41) are aligned in the closed position. The groove (89) has a projection fitted to the locking claw (82).
The protrusions (41) (41) other than (41) are fitted to prevent the trays (4) other than the tray (4) to be slid back and forth from being displaced forward and backward 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 stop shaft (43) is provided in front of 1), and the stop shaft (43) contacts the front end of the elongated hole (78) of the guide plate (77) at the closed position. The guide rod (40) also has a receiving surface (4) for supporting the tray (4).
9) is provided so as to project horizontally inward, and a leaf spring (44) is cantileveredly provided inside the rear end portion. The leaf spring (44) is provided with a convex portion (45) facing inward at the center thereof, and a concave portion (46) into which the convex portion (45) is fitted is formed on a side portion of the tray (4). Leaf spring (44)
The tray (4) is softly locked to the guide rod (40) by the elastic force of. FIG. 8 (b) is a view of the tray (4) and the guide rod (40) assembled, viewed from the direction of arrow B. The lower end of the rack portion (42) projects from the lower surface of the mounting plate (430), and the lower surface of the receiving surface (49) coincides with 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. One large tooth (48) having a larger tooth thickness than the other teeth is formed substantially in the center of the rack portion (42) of the tray (4). As will be described later, this is the gear train (6) of the tray holder (5) and the rack portion.
This is because the tray (4) cannot be slid if the relative position is displaced when the (42) is assembled.

When the open / close slide (80) slides backward from the closed position shown in FIG. 6 by the rotation of the motor (M1), the locking claw (82) and the projection (41) are engaged with each other to cause the tray (4 ) Is the guide rod (4
Slide with 0) in the opening direction. As shown in FIG. 7, when the open / close slide (80) pushes in 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). From the open position, the user operates the front panel (10) to load the disc (7
When a signal to be stored in 4) is input, the opening / closing slide (80) slides forward due to the rotation of the motor (M1). Tray (4)
And the guide rod (40) also slides forward. Opening / closing slide (80)
When the closed position detection switch (SW2) is pushed in, the motor (M1)
Stops rotating and reaches the closed position.

(Tray Loading Mechanism) FIG. 11 is a plan view of the loading completion state. In FIGS. 10 and 11, the side plates (7) and (70) are omitted for convenience of description.
The gear train (6) provided on the tray holder (5) is driven by a motor (M3) arranged 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) in which a tooth is not formed on a part of its peripheral surface, and the rack portion (40) of the guide rod (40) in the closed position ( 42) has a dent (6
Fit in 2). FIG. 9 is a left side view of the tray holder (5) and the tray (4), and a guide piece (53) for supporting the tray (4) projects inside the side portion 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 part (42) is supported by the guide piece (53) and slides while being fitted to the upper end part 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
The (61) has an abutment wall (63) on the lower surface. Tray holder (5)
An arcuate groove (52) is opened on the upper surface, and the second gear (61)
Rotates with the tip of the contact wall (63) fitted in the 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 contact wall (63) of the second gear (61) contacts the clockwise edge of the groove (52), and the unloading detection switch (SW5) is pushed in to move the first gear. (60) dent
Assembled with (62) facing outward. The Geneva mechanism is constructed by providing only a part of the tooth surface at the portion (61a) on the peripheral surface of the second gear (61) that meshes with the first gear (60). This prevents the tray (4) from sliding more than the normal movement amount 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) is
Detection switch pushed in by the front end of the
(SW3) is provided. Further, a locking lever (54) which is spring-biased in the counterclockwise direction 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). A recessed portion (47) is formed in this. Recess (4
By fitting the locking lever (54) with the locking lever (54), the tray (4) is prevented from being displaced due to external vibration when the tray (4) is completely loaded.

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 at the rack portion (42) of the tray (4). ) Kick out the tip. The rack portion (42) and the first gear (60) mesh with each other to slide the guide rod (40) and the tray (4) forward. The guide rod (40) is restricted in sliding because the stop shaft (43) is in contact with the front end of the elongated hole (78) of the guide plate (77). 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) rotates once, the recess (62) is fitted into the large tooth (48) shown in FIG. 10, and the tray (4) is moved to the guide piece (5).
Guided by 3), continue to move 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) is stopped. In this state, the tray (4) is the tray holder.
With (5), it is possible to move 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 recesses (62) and the large teeth (48) do not mesh with each other, and loading cannot be performed. Therefore, the second gear (6
It turns out that 1) is not installed in the proper state. All gears in this embodiment are made of synthetic resin such as polyacetal.

(Tray Lifting Mechanism) FIG. 12 is a perspective view of the mechanical deck (100) excluding 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 plan view of a mechanism for sliding (90). Chassis (2)
A gear mechanism (3) linked to a motor (M2) is provided from the upper center part toward the rear, and the gear mechanism (3) is a chassis.
It fits in the recess (20) formed in (2). The gear at the downstream end of the gear mechanism (3) is provided by stacking two gears (30) and (31), and the gear at the upper side (30) is the rack part (9) of the second slide body (90).
The lower gear (31) meshes with the rack portion (97) of the third slide body (91) as will be described later. The gear (31) has a reference hole (3
1a) has been opened.

Two positioning protrusions (34) (34a) project from the upper surface of the drive gear (32) which meshes with the lower gear (31),
The control gear (33) is fitted to the positioning protrusions (34) (34a). The two positioning protrusions (34) (34a) have different diameters from each other, and the control gear (33) is not attached at an incorrect angle. There are six detection holes (38) (38) on the periphery of the control gear (33).
Are concentrically opened. The left end of the recess (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 away from the rotation transition path of the turning lever (92) provided on the lower surface of the chassis (2), and the gear (31) is the third slide body (91).
(See FIG. 14).

The chassis (2) is provided with circular arc grooves (22) and (22) corresponding to both ends of the rotating lever (92), and the rotating lever (9) is formed.
Both ends of 2) penetrate through the circular arc grooves 22, 22 and are fitted to the first slide body 9 and the second slide body 90. The rotation lever (92) is biased counterclockwise by the spring to move the first slide body.
(9) is urged forward and the second slide body (90) is urged backward. A sensor (SE1) composed of a photocoupler is attached on the chassis (2) so as to sandwich the detection hole (38). The sensor (SE1) is a detection hole through which the control gear (33) rotates.
(38) is counted, the processor (200) shown in FIG. 1 reads the count information, stores it in the memory once, and detects the rotational position of the control gear (33). The sliding of the first and second slide bodies (9) and (90) is controlled by the sensor (SE1).
It is controlled by detecting the rotation angle of (33).

The control gear (33) has two intermediate gears (39) (39).
Via a motor (M2) on the chassis (2).
A reproduction position detection switch (SW4) is provided on the transition path of the second slide body (90) in the back of the chassis (2), and the reproduction position detection switch (SW4) is the tip of the second slide body (90). When pushed by, the rotation of the motor (M2) stops. As shown in FIGS. 12 and 15, the control gear (33) has three
The gear (36) and pinion (37) are formed on the lower surface of the collar (35) in steps.
Is formed. The detection holes (38) (38) are opened in the collar (35). On the lower surface of the pinion (37), locate the positioning protrusions (34) (3
Holes (380) (380a) into which 4a) is fitted 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) (320) spaced apart from each other at two locations on its 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) which do not form tooth surfaces at two locations on the peripheral surface, respectively. From the lower end of each recessed surface (300) (310), a kicking tooth (330) kicked by the mating gear protrudes laterally, and the kicking tooth (330) is opened.
Fit in (340). The play surfaces (320) (370) are formed to have substantially the same diameter as that of the tooth bottom, and form a Geneva mechanism with the mating gear to be fitted.

A cam groove (9) formed in the second slide body (90).
4) has four flat parts (94
d) (94c) (94b) (94a) are connected by inclined grooves. Therefore,
When the second slide body (90) slides forward due to the rotation of the motor (M2), the tray holder (5) fitted in the cam groove (94).
Goes down. As shown in FIGS. 12, 17 and 18,
The four flat parts (94d) (94c) (94b) (94a) are three trays.
The height position of (4) and the position where the tray holder (5) is placed on the optical head base (27) correspond. That is, FIG.
As shown in (a), when the projecting shaft (50) of the tray holder (5) is engaged with the flat portion (94a) at the highest position, the tray holder (5) is placed at the highest position. It faces 4). At this time, in the control gear (33), as shown in FIG. 17 (b), the detection hole (38) serving as the detection reference of the rotational position has a sensor (S).
It faces E1).

When the motor (M2) is energized and the control gear (33) rotates counterclockwise, the second gear is rotated by the rotation of the gear (30).
The slide body (90) slides forward. The first slide body (9) slides rearward via the turning lever (92). By sliding both slide bodies (9) and (90), the tray holder (5) moves to the cam groove (9
3) Go down 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).
Control gears (33) are 76.2 ° and 139.4 ° from the reference position, respectively.
When rotated by °, the protruding shaft (50) of the tray holder (5) will be
Fits on (94b) and (94c). When the control gear (33) rotates 220.5 ° from the reference position, as shown in FIG.
(50) fits on the bottom 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 lifting mechanism) Gear mechanism (3)
Are attached to the chassis (2) as follows. FIG.
As shown in FIG. 9 (a), the third slide body (91) is retracted rearward so that the rack portion (97) and the reference hole (31a) of the lower gear (31).
And attach. At this time, the concave surface (3) of the gear (31)
10) (310) does not face the rack portion (97) side of the third slide body (91), but one kicking tooth (330) faces the drive gear (32) side.
Next, set the drive gear (32) so that one play surface (320)
Attach so that it faces (330). At this time, the positioning protrusions (34) (34a) are located on a line orthogonal to the sliding direction of the third slide body (91).

Then, as shown in FIG. 20 (a), the second slide body (90) is pulled in, and the upper gear (30) is moved to the rack portion.
Install so that it meshes with (96). One kick tooth (330) of the gear (30) faces the control gear (33) side. Next, control gear (3
3), the end of the play surface (370) on the clockwise side is the kick tooth (330).
Position the holes (380) and (380a) so that they are facing the projections (34).
Attach according to (34a). When the motor (M2) rotates and the control gear (33) rotates counterclockwise, the play surface (370) and the recessed surface (300) of the gear (30) are disengaged from each other. Gear (30)
The kick tooth (330) is kicked by the end face of the opening (340),
It rotates clockwise and meshes with the control gear (33) to rotate.
The control gear (33) and the drive gear (32) are the positioning protrusions (34) (34a).
Thus, the gear (31) also meshes with the drive gear (32) to rotate because they are connected. The second and third slide bodies (90) and (91) both advance at the same speed.

The control gear (33) rotates 139.4 ° from the reference position, that is, the tray holder (5) is the lowest tray (4).
19 (b), the play surface (320) of the drive gear (32) and the recessed surface of the gear (31) are lowered as shown in FIG. 19 (b).
(310) face each other, and the gear (31) temporarily stops rotating. 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), 20.5 °, that is, tray holder (5)
When comes into contact with the optical head base (27), the small gear (37) of the control gear (33) and the gear (30) are disengaged, and the play surface (370) of the small gear (37) and the gear (30) The concave surface (300) faces. Therefore, the second slide body (90) stops. After that, 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, the play surface (320) of the drive gear (32) and the facing of the gear (31) are disengaged as shown in FIG. 19 (c). , The gears (31) and the drive gears (32) start to mesh with each other, and the third slide body (91) slides again. When the control gear (33) rotates 344.6 ° from the reference position, the sensor (SE1) detects the detection hole (38) and the motor
The rotation of (M2) stops (see FIG. 23 (b)). That is, the third slide body (91) has the tray holder (5) as the lowest tray.
It does not slide from the position facing (4) until it contacts the optical head base (27), but slides after the tray holder (5) reaches the optical head base (27). The intermittent drive is performed in this manner when the tray holder (5) reaches the optical head base (27) as will be described later.
This is for raising and lowering.

21 to 23 show the second slide body (90).
And the relative positional relationship between 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 mentioned above, the three pins (81) (81) (81) protruding from the support bracket (8)
Of the two, the two pins (81) (81) arranged at the lower end are the third
The side plate (7) penetrates the cam grooves (95) (95) of the slide body (91).
It fits in the second vertical hole (72) (72) and is only allowed to slide up and down.
The other pin (81) fits into the second vertical hole (72). Each cam groove
(95) has three flat parts (95
c) (95b) and (95a) are connected to each other by an inclined groove, and a front half is integrally provided with a rear half having a shape in which the front half is turned upside down. The inclination angle of the inclined groove is the first and second slide bodies.
(9) It is the same as the inclination angle of the inclined grooves of the cam grooves (93) and (94) of (90). 3 flat parts (95c) (95b) (95a) are 3 trays
(4) (4) Corresponds to the height position of (4). That is, the first,
Similar to the second slide body (9) (90), the highest flat part (95a)
Corresponds to the highest tray (4) and the bottom flats (95
c) corresponds to the lowest tray (4).

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

When the control gear 33 rotates 220.5 ° from the reference position, the second slide body 90 stops as described above. When it is further rotated by 9 °, the third slide body (91) advances while the second slide body (90) is stopped. The tray holder (5) stops descending and the support bracket (8)
(81) rises again from the state of being fitted to the lowest 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 passage of the detection hole (38) farthest from the reference position in the clockwise direction, and the rotation of the motor (M2) is stopped. At this time, as shown in FIG. 23 (a), the pin (81) of the support bracket (8) is fitted in 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, by raising and lowering the support bracket (8), the tray (4) to be opened and closed by the opening / closing slide (80) can be changed. The feature of this embodiment is that, even when the tray holder (5) faces the optical head base (27) and the disc is being reproduced, the third slide body (91) is further advanced, so that the support bracket (8) is formed. The disc can be removed by operating the open / close slide (80). Each operation will be described below.

(Opening / Closing Operation) When inserting a disc into the mechanical deck (100) from the outside, first of all, the opening / closing button (13) is operated. The motor (M1) rotates, the open / close slide (80) retracts, and the tray (4) moves to the guide rod.
It moves to the disc ejection position with (40). When the open / close slide (80) pushes the open position detection switch (SW1), the motor (M1) stops. User trays discs (4)
When the open / close button (13) is operated again, the motor (M1)
Is reversed, the open / close slide (80) advances, and the tray (4) is stored in the stocker (74). When the open / close slide (80) pushes the closed position detection switch (SW2), the motor (M1) stops. The tray (4) reaches the closed position.

(Loading operation See FIGS. 10 and 11)
Next, when reproducing the disc stored in the stocker (74), the reproduction 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)
Moves forward by releasing the soft lock 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) fits into the tray holder (5) and reaches the loading completion state.

(Elevating operation FIGS. 12 to 15, FIG. 17,
(See FIG. 18) From this state, the motor (M2) rotates and the first and second slide bodies (9) and (90) slide in opposite directions, so that the tray (4) and the tray holder (5) are Together, cam groove (93)
Go down along (94). The sensor (SE1) counts the detection holes (38) passing through, 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
The rotation of (M2) is stopped. The disc placed on the tray (4) can be reproduced.

When the disc is previously stored in the stocker (74), the number button (15) is operated to select the tray (4) on which the disc to be reproduced is placed. Processor
(200) first judges from the count number of the detection holes (38) stored in the memory whether or not the tray holder (5) faces the desired tray (4), and if they face each other, the motor ( Energize M3) to load the tray (4). If they do not face each other, rotate the motor (M2) to move the tray holder (5)
Is moved up and down so that the tray holder (5) faces the desired tray (4) and then the motor (M3) is energized to load the tray (4).

(Operation of taking out disc during reproduction FIG. 6, FIG. 7, FIG. 19, FIG. 20, FIG. 23 to FIG. 26) The tray (4) and the tray holder (5) are placed on the optical head base (27). In order to take out another tray (4) in the opened state, first enter the number of the disk to be taken out, then open / close button
Operate (13). As an example, the case where the disc placed on the tray (4) at the lowest position is reproduced and the disc placed on the tray (4) at the highest position is ejected is shown. As shown in FIGS. 24 and 25, the third slide body (91) slides from the position where the tray holder (5) faces the lowest tray (4) until it reaches the optical head base (27). Since it does not, the pin (81) of the support bracket (8) remains fitted in the lowest flat portion (95c) of the cam groove (95). The protrusions (41) of the trays (4) and (4) at the highest position and the middle position respectively have support brackets.
It fits in the 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) moves the cam groove (9).
Go up along 5). Sensor (SE1) controls gear (3
When it is detected that 3) has rotated 344.6 °, the sliding of the third slide body (91) stops, and at this time, the pin (81) moves the highest flat part (95a) of the cam groove (95). ).

Since the protrusions (41) connected to the tray (4) are aligned in a vertical line, the locking claws (82) engaged with the protrusions (41) corresponding to the lowest tray (4) are Ascending, the engagement is released, and as shown in FIG. 26, the projection (41) corresponding to the tray (4) at the highest position is engaged. In this state, open / close slide
By sliding (80) toward the open position, the disc in the tray (4) placed at the highest position can be taken out. That is,
You can eject another disc while playing it. Also, the first to raise and lower the tray holder (5),
The second slide bodies 9 and 90 and the third slide body 91 for raising and lowering the support bracket 8 can be driven by a single motor M2, which leads to simplification of the mechanism.

Regarding the unloading operation, the operation path opposite to the above is followed. When storing a 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 then open / close the button (13).
To operate. When the control gear (33) is rotated more than 20.5 ° from the reference position, that is, when the tray holder (5) reaches the optical head base (27) and the support bracket (8) is raised, The rotation of the motor (M2) causes the third slide body (91) to slide backward, and the support bracket (8) descends.

By 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) with sensor (SE1)
When it is detected that the motor has reached the height position where it should be stopped, the rotation of the motor (M2) is stopped. 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 open / close 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 goes without saying that the number of trays may be three or more. A roller (not shown) may be fitted to the protruding shaft (50) to improve the slidability with the cam grooves (93) (93) (94).

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or limiting the scope. The configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a device 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 a mechanical deck.

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

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

FIG. 7 is a view showing the open position of the above.

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

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

FIG. 10 is a diagram showing the relationship between the tray holder and the tray in the open position.

FIG. 11 is a diagram showing a relationship in the above closed position.

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

FIG. 13 is a plan view of the above.

FIG. 14 is a partially cutaway view of the above 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 attached to the tray holder.

FIG. 17A is a side view of the tray holder in a state where lifting and lowering is completed, and FIG. 17B is a plan view when the control gear is at the reference position.

FIG. 18 (a) is a side view of the tray holder in a completely lowered state, and FIG. 18 (b) is a plan view showing the rotation amount of the control gear at this time.

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

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

FIG. 21 is a diagram showing the relative positions of the second slide body and the third slide body in the initial state.

FIG. 22 is a view showing a state where the second slide body of the above is completed to advance.

FIG. 23 (a) is a diagram showing a state in which the third slide body of the same is completely moved forward, and FIG. 23 (b) is a diagram showing a rotational position of the control gear at this time.

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

FIG. 25 is a diagram showing the position of the support bracket corresponding to the lowest tray.

FIG. 26 shows a state where the tray holder has been completely lowered.
It is a figure which shows the state which the support bracket completed rising.

FIG. 27 is a plan view showing an engagement state of a locking claw and a protrusion.

FIG. 28 is a drawing of FIG. 3 taken along the line AA.

FIG. 29 is a diagram when a disc is inserted in the conventional disc reproducing device.

FIG. 30 is a diagram showing a state in which the optical head base faces the main tray of the above and reproduction is possible.

FIG. 31 is a diagram showing a state in which the stocker of the same is raised.

[Explanation of symbols]

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

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoji Arikuma 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A stocker arranged in the apparatus body (1).
(74), a tray (4) horizontally accommodated in the stocker (74) in a plurality of stages, on which discs are respectively mounted, an optical head base (27) for reproducing the disc, and a plurality of trays (4). ) And a tray opening / closing mechanism for moving the tray (4) between the stocker (74) and the disc ejection position by engaging with any one of the above (4) and the tray (4) and the optical head base (74). 27) In a disc reproducing apparatus having a transport mechanism that moves substantially horizontally to the upper loading completion position, the tray (4) transported to the loading completion position by the transport mechanism is placed on the optical head base (27). A slide body (90) for facing up and down and a slide body (91) for raising and lowering the tray opening / closing mechanism in synchronization with the raising and lowering of the tray (4) are provided. The slide body (91) is connected to the tray opening / closing mechanism. tray
When (4) reaches the optical head base (27), the slide body (91) further slides to open a cam groove (95) for raising the tray opening / closing mechanism, and at the raised position. The tray opening / closing mechanism is used for other trays in the stocker (74).
A disc reproducing device characterized by being linked to (4). 2. Both slides (90) (91) are a single motor
It is connected to the gear mechanism (3) driven by (M2), and the gear mechanism (3) is lowered from the loading completion position to the position where the tray (4) and the tray opening / closing mechanism face 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 (which temporarily stops sliding of the slide body (91) ( The disc reproducing apparatus according to claim 1, further comprising a drive gear (32) and a drive gear (32).