JP3427334B2 - Recording medium 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 recording medium reproducing apparatus provided with a recording medium exchanging device, and more particularly, a stocker and a recording medium transferring means are relatively positioned to select a recording medium to be reproduced or exchanged. The present invention relates to a recording medium reproducing device.

[0002]

2. Description of the Related Art Conventionally, as a recording medium reproducing apparatus having a recording medium exchanging device, as shown in FIG. 11, a magazine having a disc inserted therein is externally mounted in the device, and a disc in the magazine is selected. There was a disc player to play.

When exchanging a disc in a magazine with such a disc reproducing device, the magazine is taken out from the device and the disc is exchanged. When the disc in the magazine is being reproduced, there is a disc being reproduced. If another disc is inserted in a different location, it will interfere with the other discs when the disc being played back is returned to the magazine. Therefore, it is prohibited to take out the magazine during playback and the disc in the magazine cannot be replaced. It was like this.

Also, since an expensive magazine is required,
There has been a problem that the cost of the entire device increases. In addition, the magazine must be taken out even when only one disc in the device is exchanged, which makes the disc exchange operation troublesome.

Further, the disk transfer means for transferring the disk to the reproducing means for selecting the disk to be reproduced in the magazine has been moved up and down to the position of the disk to be reproduced. Then, the carrier on which the disk is placed is guided to the guide groove of the disk transfer means and transferred to the reproducing position.

As described above, since the guide groove is provided in the disk transfer means that moves up and down with respect to the chassis, it is difficult to accurately align the position of the guide groove with the position of the carrier in the magazine, and if there is a displacement. There is a problem that the carrier cannot be smoothly guided from the magazine to the guide groove. Further, there is a problem that the carrier and the transfer means vibrate due to the friction between the carrier and the guide groove during the transfer of the carrier.

Further, since an expensive magazine is required,
There has been a problem that the cost of the entire device increases. In addition, the magazine must be taken out even when only one disc in the device is exchanged, which makes the disc exchange operation troublesome.

Japanese Laid-Open Patent Publication No. 4-3 discloses a disk reproducing apparatus equipped with a disk changer which does not use a magazine.
FIG. 1 shows an example of a disk reproducing device disclosed in Japanese Patent No. 8673.
2 shows. The stocker shown in the drawing accommodates a plurality of carriers on which discs can be placed, and is moved up and down by the stocker moving means so as to match the height at which any carrier is pulled out to the tray.

The tray is moved between the load position shown in FIGS. 12 (a) and 12 (b) and the eject position shown in FIG. 12 (c). As shown in FIG. 12 (a), the carrier on which an arbitrary disc is placed is pulled out onto the tray at the loading position, and further, as shown in FIG. 12 (b), the reproducing means clamps the disc for reproduction. Done.

The tray on which the carrier is placed is shown in FIG.
When moving from the state shown in to the position shown in FIG.
The carrier on the tray is exposed to the outside of the housing, and the disc on the carrier can be replaced or a new disc can be placed on the carrier. Figure 1 shows the tray on which the carrier is placed.
2C is moved to the position shown in FIG. 12A, and the carrier on the tray is returned to the stocker, so that the disk is replaced or the disk is inserted into the apparatus.

However, in this type of disk reproducing apparatus, since the guide groove of the carrier is provided in the transfer means which moves in the horizontal direction with respect to the chassis, the disk reproducing apparatus from the stocker is the same as the disk reproducing apparatus using the above-mentioned magazine. There was a problem of introducing the carrier into the guide groove and a problem of vibration during transfer.

Further, in this disc reproducing apparatus, the disc is transferred to the reproducing position or to the outside by a single transfer means. Then, the carrier on which the disc is placed is pulled out from the stocker in one direction, passes through the reproduction position and is transferred to the outside, so that there is a problem that the disc cannot be exchanged during reproduction.

On the other hand, the user often thinks of the disk to be reproduced next during reproduction of the disk, and there is a strong demand to exchange the disk during reproduction when the disk to be reproduced next is not in the apparatus. .

[0014]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to allow a recording medium to be exchanged during reproduction without using a magazine, and Another object of the present invention is to provide a recording medium reproducing apparatus that can smoothly guide and transfer the recording medium.

[0015]

A recording medium reproducing apparatus of the present invention reproduces a recording medium, a stocker capable of accommodating the recording medium, a plurality of carriers on which the recording medium is placed and accommodated in the stocker, and the recording medium. Reproducing means, a first transferring means for transferring the carrier between the inside of the stocker and the outside of the apparatus, a second transferring means for transferring the carrier between inside of the stocker and the reproducing means, and Positioning means for relatively positioning the stocker and the first transfer means and the second transfer means, and the second transfer means guides the carrier to the reproduction position in the reproduction means, and the position is set at the position. A carrier groove for holding the carrier, or a guide groove provided in a member fixed to the device body, wherein one carrier is transferred to the reproduction means by the second transfer means. In this state, by driving the positioning means to allow another carrier to be transferred to the outside of the apparatus by the first transfer means, another recording medium can be exchanged during reproduction of one recording medium. It is configured as follows. Further, in the recording medium reproducing apparatus, at least one of the guide grooves is provided in a member constituting the reproducing means.

[0016]

According to the recording medium reproducing apparatus of the present invention, for selecting the first transferring means for transferring the recording medium to the outside of the apparatus and the second recording medium transferring means and the recording medium for transferring the recording medium to the reproducing means. Since the recording medium transfer path of the first transfer means is a path that does not pass through the reproducing means, the recording medium can be exchanged during reproduction.

Further, since the guide groove for guiding the recording medium in the second transfer means is provided in the apparatus main body or a member fixed to the apparatus main body, the recording medium can be guided and transferred smoothly.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus which is an embodiment of the present invention will be described with reference to the drawings. First, the outline of the disc reproducing apparatus according to the embodiment will be described with reference to FIG. Carriers (not shown in FIG. 10) on which discs can be placed are housed in the shelves of the respective stages of the stocker 21 arranged in the housing, and the carriers are moved up and down to match the drawer height.

The slider tray 31 constituting the first transfer means moves between the inside of the housing and the position outside the housing shown in the drawing,
The carrier of the stocker 21 is exposed to the outside of the housing so that the disc on the carrier can be replaced or the disc to be added can be placed on the carrier. When the disc on the carrier is exchanged or a disc is added, the slider tray 31 stores the disc in the stocker 21.

The second transfer means (not shown in FIG. 10) pulls out the carrier in the stocker 21 from the stocker 21 at a height different from that of the slider tray 31 and transfers it to the position of the disk reproducing means. Then, the disc mounted on the carrier is clamped and reproduced by the disc reproducing means.

The disk position detecting member 26 is a stocker 21.
It is provided so as to be able to move up and down so as to pass through the central hole of the disk placed on the carrier inside, and at the timing when the carrier is put in and out of the stocker 21 by the first transfer means or the second transfer means. It is located below the access point.

Since the first transfer means pulls out the carrier from the stocker 21 to the side opposite to the disk reproducing means, the disk in the stocker 21 can be exchanged or stockered whether the disk reproducing means holds the disk or not. It is possible to add a disc to the disc 21.

The second motor drives the second transfer means and the stocker moving means, the first motor drives the first transfer means and the disk clamp means of the disk reproducing means, and further, the second motor. Power is switched between the second transfer means and the stocker moving means.

Next, details of the embodiment will be described with reference to FIGS. 1 to 4 are exploded perspective views showing respective parts of a disc reproducing apparatus according to an embodiment of the present invention. Figure 1
In the following description, the positive direction of the X axis, the positive direction of the Y axis, and the positive direction of the Z axis will be referred to as a rearward direction, a rightward direction, and an upward direction, respectively. The posture of each component in FIGS. 2 to 4 is shown in FIG.
It doesn't change in relation to the one.

Reference numeral 1 shown in FIG. 1 denotes a main chassis, which supports the entire components shown in FIGS. The right side chassis 2 is fastened to the right side of the main chassis 1, and the gear train support member 3 and the guide plate 4 are fastened to the right side chassis 2. The rotation of the first motor 7 fastened to the gear train support member 3 is transmitted to the gear 8 via the belt and the idler gear. These drive mechanisms are supported by the gear train support member 3.

The loading slider 9 is supported by the guide plate 4 so as to be slidable in the front-rear direction, and the rack 9 that engages with the external teeth 52a of the internal gear 52 shown in FIG.
a and is driven by the internal gear 52 in the front-back direction. The clamper support member 5 is fastened to the rear upper surface of the main chassis 1 and holds the clamper 10.

The stocker cover 6 is the stocker 2 shown in FIG.
1 is fastened to the front upper surface of the main chassis 1 so as to cover the upper part of the switch 1 and the switch operating rod 11 is attached to the stocker cover 6
It is movably supported by a cylindrical portion extending downward in the center of. The switch SW10 is fixed to the stocker cover 6 so as to face the switch operating rod 11 via the substrate. Further, although not shown, a locking rod is provided on the back surface of the stocker cover at a position corresponding to the hole 21c of the stocker 21 shown in FIG. The length of this locking rod is substantially the same as that of the switch operating rod.

The switches SW2 and SW4 to SW9 are mounted on the switch substrate 12 and the main chassis 1
It is fixed to the bottom of the. The switch actuating slider 13 is supported by the main chassis 1 so as to be movable in the left-right direction, and a protrusion 13 a provided thereon abuts on the protrusions 9 b and 9 c of the loading slider 9. When the loading slider 9 moves rearward, that is, to the loading position, the protrusion 9c of the loading slider 9 pushes the switch operating slider 13 to the right through the convex portion 13a, and the switch S.
When W7 is operated to move the loading slider 9 forward, that is, to the carrier storage position, the projection 9b of the loading slider 9 causes the switch operation slider 13 to project to the convex portion 13a.
The switch SW8 is pushed to the left via the switch.

The carrier 20 shown in FIG. 2 is capable of positioning and mounting a disk by means of a large-diameter disk recess 20e or a small-diameter disk recess 20f, and is supported by grooves 21a, 21a, ... Provided on the inner wall of the stocker 21. 6 are stored in the stocker 21. The leaf spring 24 fixed to the stocker 21 engages with the recess 20g of the carrier 20 to lightly position the carrier 20. The carrier 20 has a hook engaging notch 20b shown in FIG.
6 hooks 36a. Therefore, the carrier 20
Can be moved between the stocker 21 and the outside of the housing by the carrier drawing member 36.

Further, the hook engaging notch 2 of the carrier 20
0a is a hook 40 of the loading hook 40 shown in FIG.
engage a. Therefore, the carrier 20 can be moved between the stocker 21 and the reproduction position by the loading hook 40. The carrier withdrawing member 36 and its drive mechanism form a first transfer means, and the loading hook 40 and its drive mechanism form a second transfer means.

The shafts 21b and 21b of the stocker 21 are engaged with the longitudinal grooves 1a and 1a provided in the main chassis 1. In addition, the shafts 22 that are respectively erected on the front plate 22 and the rear plate 23 that are fastened to the lower side of the stocker 21 are provided.
a, 22a and 23a engage with stepped grooves 25c, 25c ... Of the stocker lift slider 25.

The slot 25e of the stocker elevating / lowering slider 25 is formed in the guide rod 1c of the main chassis 1, and the groove 25b,
25b is inserted into a shaft (not shown) on the main chassis. Therefore, the stocker elevating slider 25 is supported by the main chassis 1 so as to be slidable in the left and right directions. The stocker elevating slider 25 is driven by the rack 2
5a, which engages with a gear 56 (shown in FIG. 4).
The stocker 21 is moved up and down by moving the stocker elevating slider 25. The stocker elevating slider 25 and its drive mechanism constitute a stocker moving means.

The disc position detecting member 26 is vertically movable by engaging the hollow portions provided in the rod-shaped projections 26a and 26b with the guide rods 1c and 1d of the main chassis 1 shown in FIG. The compression coil spring 27 sandwiched between the main chassis 1 and the disc position detecting member 26 urges the disc position detecting member 26 upward, and the recess formed at the tip of the arm 58 shown in FIG. The base end of the rod-shaped projection 26a of the detection member 26 is locked. The arm 58 serves as the disc position detecting member 26.
Is moved up and down, but when the disc position detecting member 26 rises, the switch SW10 is operated via the switch operating rod 11. The rod-shaped protrusion 26a is inserted through the center hole of the disk inside the stocker 21, and the rod-shaped protrusion 26b is inserted through the hole 20c of the carrier 20 inside the stocker 21. In addition, this hole 2
0c is a large-diameter disk recess 20e in the carrier 20.
It is formed on the outer side. Also, in the stocker 21,
A hole 21c is provided in the stocker 21 at a position corresponding to the hole 20c of the carrier 20.

The switch operating arm 28 is rotatably supported by the shaft 1g of the main chassis 1 through the hole 28a, and the right end portion of the switch operating arm 28 contacts the switch SW6. Also,
The projection 28b is formed in the holes 25d, 2 of the stocker lifting slider 25.
The switch actuating arm 28 swings every time 5d ... The switch SW6 is turned on / off each time the hole 25d passes. The pitch between the holes 25d coincides with the moving distance for moving the carrier 20 up and down one step.

The switch actuating arm 29 is rotatably supported by a boss 1h on the right side of the bottom surface of the main chassis 1 via a shaft 29a, and its lower rear end contacts the switch SW9. Further, the projection 29b corresponds to the step of being pulled out by the carrier pulling-out member 36, and is in contact with the rear end portion of the carrier 20 at this position. Therefore,
The switch actuating arm 29 rotates when the carrier 20 is pulled out from the stocker or returned.
The switch SW9 detects that the carrier 20 has been returned to the stocker 21 by the carrier drawing member 36. Alternatively, the presence / absence of a carrier on the stage pulled out by the carrier pulling-out member 36 is detected. Tongue piece 23 of the rear plate 23
b is the switch S when the stocker 21 moves to the lowest position.
Activate W2. When the stocker 21 is moved to the lowest position, the stocker position is set to 0, and when the stocker 21 is raised, the stocker position is counted up every time the switch SW6 is turned on and off, and when the stocker 21 is lowered, the switch SW6 is switched. The control circuit can store the position of the stocker 21 by down-counting the position of the stocker each time the switch is turned on and off.

In the switch holding member 38 shown in FIG. 3, the U-shaped convex portion 38b formed on the lower surface of the switch holding member 38 is fitted into the U-shaped concave portion 2d in front of the right side chassis 2 shown in FIG. It is fastened to the chassis 2. The slider tray 31 includes the main chassis 1 and the switch holding member 3.
It is supported by 8 so as to be movable in the front-rear direction. That is, the convex portion 38a of the switch holding member 38 engages with the groove (not shown in FIG. 3) provided on the right side surface of the slider tray 31, and the main chassis 1
1j on the left side of the groove is provided on the left side of the slider tray 31 (hidden in FIG. 3 and not shown).
Is engaged with.

The positional relationship between the slider tray 31 and the stocker 21 is shown in FIGS. FIG. 5 shows a state where the slider tray 31 returns the carrier 20 into the stocker 21, and FIG. 6 shows a state where the carrier 20 is pulled out of the housing. As shown in the figure, since the slider tray 31 is formed and arranged so as to sandwich the stocker 21 from the left and right, the slider tray 31 forms a long left and right support portion,
It is stably supported so as to be slidable in the front-rear direction and, as will be described later, the main slider 34 and the carrier pull-out member 3 are provided.
6 can be stably supported. Moreover, the slider tray 31
Since the slider tray 31 surrounds the stocker 21 when it is stored in the housing, the stroke of the slider tray 31 can be increased in a narrow space and the carrier 20 can be pulled out for a long distance.

The actuating piece of the switch SW3, which is fastened to the switch holding member 38, is provided when the slider tray 31 is housed in the housing or during the stroke of moving outside the housing (moving stroke in the forward direction). Slider tray 3
1 is pushed to the right side surface, but at the end of the movement stroke of the slider tray 31 to the outside of the housing, the rear end inclined portion 31c of the slider tray 31 comes to face the operating piece of the switch SW3, and the pressing of the operating piece is released. To be done. That is, the switch SW3 operates at the open position of the slider tray 31, and detects the open position of the slider tray 31.

The guide plate 33 is the slider tray 31.
It is fastened to the lower surface of. The guide plate 33 and the slider tray 31 sandwich the main slider 34 and the carrier pullout member 36, and support these members so as to be movable in the front-rear direction.

The rack 34a provided on the lower surface of the main slider 34 in the front-rear direction meshes with the gear 8 shown in FIG. 1, and the main slider 34 moves in the front-rear direction by the forward and reverse rotation of the first motor 7. To be done. Main slider 3
Reference numeral 4 is a slider tray 31 and a carrier drawing member 36.
The gear 6 shown in FIGS. 4, 5 and 6.
Rotate 2.

That is, the shaft 37a of the rotating member 37, which is rotatably supported by the carrier pull-out member 36, engages with the J-shaped groove 31a of the slider tray 31, and also engages with the recess 34c of the main slider 34. Has become. When the main slider 34 is moving rearward, the shaft 37a moves to J
The main slider 34 does not drive the carrier pull-out member 36 because it engages with the rightward protrusion of the shaped groove 31a and does not engage with the recess 34c.

On the other hand, when the main slider 34 moves forward, the recess 34c draws in the shaft 37a, the shaft 37a comes into engagement with the straight portion of the J-shaped groove 31a, and the carrier drawing member 36 is driven.

The shaft 35a of the rotating member 35 rotatably supported on the slider tray 31 engages with the J-shaped groove 2a of the right side chassis 2 shown in FIG. 1 and engages with the recess 34d of the main slider 34. Is possible. Main slider 3
4 is moving rearwardly, the shaft 35a engages the J-shaped groove 2a.
The main slider 34 does not drive the slider tray 31 because the main slider 34 engages with the rightward protruding portion and does not engage with the recess 34d.

On the other hand, when the main slider 34 moves forward, the recess 34d pulls in the shaft 35a, the shaft 35a comes into engagement with the straight portion of the J-shaped groove 2a, and the slider tray 31 is driven.

When the main slider 34 moves forward, first the carrier pulling member 36 is moved forward, and then the slider tray 31 is moved forward together with the carrier pulling member 36. Carrier withdrawing member 36
When the carrier moves forward, the carrier 20 in the stocker 21
Is pulled forward, and its tip is placed on the tongues 32a, 32a of the lower plate 32 fastened to the slider tray 31.

The tongues 32a and 32a are fitted into the recesses 1f and 1f provided in the frame upper surface 1e of the main chassis 1 when the slider tray 31 is housed in the housing, and the tongues 32a and 32a are stored in the stocker 21. It is close to the carrier 20. In this way, when the carrier 20 is pulled out, the recesses 20d, 20d at the tip of the carrier 20 engage with the protrusions 31b, 31b of the slider tray 31, and the position of the tip of the carrier 20 in the left-right direction is determined. The carrier 20
Is supported by the frame upper surface 1e of the main chassis 1, and the left and right vertical positions of the carrier 20 are determined by the left and right vertical surfaces of the frame upper surface 1e.

As described above, the main slider 34 can be moved further rearward after the slider tray 31 is pulled into the housing. The main slider 34 moved further rearward in this manner is shown in FIGS.
The gear 62 shown in is rotated. Figure 5 shows the main slider 3
4 shows the state in which the gear 62 starts to rotate. When the main slider 34 moves backward, the rear end of the gear 6
The gear 62 rotates by pushing the second protrusion 62a. Then, the gear 62 comes into mesh with the rack 34b of the main slider 34, but the positional relationship between the gear 62 and the main slider 34 is constant, and the mesh is smoothly achieved.

The loading hook support member 39 is fastened to the rear upper surface of the right side chassis 2 such that the holes 39c and 39d fit into the shafts 2b and 2c of the right side chassis 2. The rotating member 41 is rotatably supported by the loading hook 40, and its shaft 41a engages with the L-shaped groove 39a of the loading hook supporting member 39.
The shaft 41b engages with the inclined groove 9d of the loading slider 9 shown in FIG. Therefore, the loading hook 40 is
It is supported by the loading hook support member 39 and the loading slider 9 so as to be movable in the front-rear direction.

FIG. 8 shows a state in which the loading slider 9 drives the loading hook 40. FIG. 8 (a) shows the loading hook 40 in the middle of driving, and at this time, the shaft 41a (in the portion hidden by the shaft 41b) is engaged with the horizontal portion of the L-shaped groove 39a, and is rotated. The member 41 does not rotate, and the loading hook 40 is attached to the loading slider 9
Moves together with. In FIG. 8B, the shaft 41a has the L-shaped groove 3
9a shows the state in which it is engaged with the rear end of the horizontal portion, and FIG. 8 (c) shows the state in which the loading slider 9 has moved to the end of the movement stroke. The loading slider 9 is shown in FIG.
Even when the rotating member 41 rotates while moving from the position shown in FIG. 8 to the position shown in FIG. 8C, the loading hook 40 hardly moves, and the loading slider 9 bounces and the moving position varies. The stopping position of the loading hook 40 becomes stable.

When the loading hook 40 moves rearward, the carrier 20 in the stocker 21 is pulled out by the loading hook 40, and the clamper supporting member 5 shown in FIG.
Guided by the guide groove 5a of FIG. 4 and the guide groove 39b of the loading hook support member 39 shown in FIG. 3, and transferred to the position just above the turntable 70a shown in FIGS. In this way, the carrier 20 is guided by the member fixed to the main chassis 1, so that the carrier 20 does not vibrate during transfer and is reliably pulled into the guide portion.

Both the carrier withdrawing member 36 and the loading hook 40 withdraw the carrier 20 from the stocker 21, and they have a height of 1 of the carrier as shown in FIG.
The carrier 20 is offset by a step, and the carriers 20 are not pulled together.

The driving gear 51, the internal gear 52 and the carrier gear 54 shown in FIG. 4 are rotatably supported by the shaft 1h. The lower end and the upper end of the shaft 1h are respectively supported by the hole 1k of the main chassis 1 and the hole 55a of the holding member 55 fastened to the main chassis 1 shown in FIG. The hole 55a of the holding member 55 is the hole 1k of the main chassis 1.
It is fastened to correspond with. The planetary gears 53, 53 rotatably supported by the shaft of the carrier gear 54 are internal gears 5.
Sun gear 5 formed on inner gear 52b of No. 2 and driving gear 51
Mesh with 1b. These gears form a planetary gear mechanism.

The reduction mechanism driven by the second motor 50 fixed to the boss 1m of the main chassis 1 shown in FIG. 1 meshes with the large gear 51a of the driving gear 51, and the second motor 50 drives the driving gear 51. To rotate. The rotation of the driving gear 51 is transmitted to the carrier gear 54 when the internal gear 52 is stopped, and is transmitted to the internal gear 52 when the carrier gear 54 is stopped.

The external teeth 52a of the internal gear 52 mesh with the rack 9a of the loading slider 9 as described above, and drive the loading slider 9. The carrier gear 54 is connected to the rack 25 a of the stocker lifting slider 25 via the gears 56 and 57 that are rotatably supported so as to be sandwiched between the main chassis 1 and the holding member 55, and drives the stocker lifting slider 25.

The shaft 61 is fitted and supported by a hole 1p formed in the bottom surface of the main chassis 1 shown in FIG. 1 and a hole formed in the lower left side lower surface of the loading hook support member 39 shown in FIG. There is. The shaft 61 is the cam gear 63.
And the gear 62 are rotatably supported. The projection 63a of the cam gear 63 is fitted in the recess 62b of the gear 62, and the cam gear 63 and the gear 62 rotate integrally. The gear 62 is rotated by the main slider 34 as described above.

The disc position detecting member operating slider 59 is slidably supported on the upper side of the holding member 55 through a plurality of elongated holes extending in the front-rear direction, and is biased forward by a tension coil spring 72. There is. In the disk position detecting member operating slider 59, the cam follower portion 59b provided therein engages with the protrusion 63a of the cam gear 63,
It is driven in the front-rear direction by the cam gear 63. The cam-shaped projection 59a provided on the lower surface of the holding member 55
The arm 58 is engaged with the edge of the arm 58 rotatably supported by the arm 58 to rotate the arm 58.

That is, the main slider 34 raises and lowers the disc position detecting member 26 shown in FIG. 2, but raises the disc position detecting member 26 when the carrier 20 is not in and out of the stocker 21. For example, when the carrier 20 is stored in the stocker 21 with the disc displaced by 8 cm, the disc SW and the carrier shift are detected because the disc displaced detector prevents the disc position detection member 26 from rising and the switch SW10 does not operate. it can.

The disk position detecting member 26 is formed so as to have an elevating stroke corresponding to the carrier 20 locked to the carrier pulling member 36 and the loading hook 40, respectively. That is, the lifting stroke of the disc position detecting member 26 corresponds to two stages of the carrier.

When the disc position detecting member 26 is raised, the rod-shaped projections 26a and 26b are inserted into the center hole of the disc in the stocker and the hole 20c of the carrier 20, respectively. At this time, the rod-shaped protrusion 26a contacts the switch actuation rod 11 to operate the switch SW10, and the rod-shaped protrusion 26b contacts the locking rod on the back surface of the stocker cover.

On the other hand, there is a situation in which the stocker 21 is raised and the carrier exists at a position above the loading hook 40. In this case, the disc position detecting member 2
Due to the lifting stroke of 6, the loading hook 40
A rod-shaped projection 26a in the center hole of the disk above
The rod-shaped projections 26b are not inserted into the holes 20c of the carrier 20, respectively. However, in such a situation, the switch actuating rod 11 is inserted in the disc center hole above the loading hook, and the engaging rod on the rear surface of the stocker cover is inserted in the hole 20c of the carrier 20. Therefore, regardless of the position of the stocker 21, even if vibration is applied when the disc position detection member 26 is raised, the discs placed on the carrier 20 and the carrier will not be displaced.

When the disk position detecting member 26 is lowered, the carrier withdrawing member 36 and the loading hook 40 can withdraw the carrier 20 in the stocker 21 in the respective directions. When the disc position detecting member 26 is lowered, even if vibration or the like is applied to the device, the carrier pulling member 36 and the loading hook 40 are respectively locked to the carrier 20 at the position where the rod-shaped protrusion 26b does not exist. Therefore, the carriers 20 do not shift.

The rod-like protrusion 26 of the disc position detecting member 26
If the tips of a and 26b are provided with taper, a small displacement of the disk or carrier can be corrected when the disk position detecting member 26 rises. Then, it is possible to prevent the loading hook 40 or the carrier pulling-out member 36 from coming into contact with the carrier when the stocker is moved up and down.

The brake member 60 is slidably supported in the front-rear direction so as to be sandwiched between the main chassis 1 and the holding member 55, and a cam follower portion 60a provided therein.
Engages with the cam 63b of the cam gear 63 and is driven by the cam gear 63 in the front-back direction. Then, the protrusion 60b provided therein locks the carrier gear 54, and the protrusion 60c locks the internal gear 52. As described above, when the carrier gear 54 is locked, the internal gear 52 is driven to rotate, and when the internal gear 52 is locked, the carrier gear 54 is driven. The movement of 34 switches the power transmission destination of the second motor 50.
The brake member 60, its drive mechanism, and the planetary gear mechanism constitute a power switching means.

The cam gear 63 meshes with a gear 64 rotatably supported on the right side of the rear of the main chassis 1, and the gear 64 is further provided on a rotary member 65 rotatably supported by a shaft 1n of the main chassis 1. It meshes with the tooth 65a. The shaft 65c of the rotating member 65 has a J-shaped groove 71 of a slider 71 slidably supported on the rear portion of the main chassis 1.
engaged with a. The radius of the arc portion of the J-shaped groove 71a is 6
It coincides with the turning radius of 5c, and the slider 71 moves or stops while the turning member 65 is turning.

The shafts 69a, 69a of the elevating member 69 are engaged with the vertical guide grooves 1b, 1b of the main chassis 1 and the oblique elevating guide grooves 71b, 71b of the slider 71. Therefore, the lifting member 69 is not
4 moves up and down via the gear 62 to the slider 71.
The mechanism chassis 70 is attached to the elevating member 69 via a spring and a damper.

A disk motor is fixed to the mechanism chassis 70, and a turntable 70a is fixed to the rotary shaft of the disk motor. Light pick up 7
0b is attached to the mechanism chassis 70 so as to be fed in the radial direction of the disk held on the turntable 70a. At a home position where the optical pickup 70b is farthest from the turntable 70a, a switch SW1 (not shown) is activated to detect the home position of the optical pickup.

When the mechanism chassis 70 rises and the turntable 70a rises, the disc on the carrier 20 is clamped by the turntable 70a and the clamper 10 and rotationally driven by the disc motor. While the disc is rotating, the optical pickup 70b is sent in the disc radial direction to reproduce the signal recorded on the disc. The member attached to the mechanism chassis 70, the clamper 1
0 and the drive mechanism of the mechanism chassis 70 constitute the reproducing means.

The levers 66 and 67 are rotatably supported by the main chassis 1 by fitting the respective holes 66a and 67a with the shaft (not shown) of the main chassis 1 at positions close to the rotating member 65. The trailing end is pressed against the cam 65b of the rotating member 65 by being biased by the tension coil spring 68. The tips of the levers 66 and 67 are the switches S, respectively.
It contacts W4 and SW5.

The levers 66 and 67 swing as the rotating member 65 rotates about the axes fitted into the holes 66a and 67a. The levers 66 and 67 are respectively SW4.
And activate SW5. The switch SW4 is turned on when the mechanism chassis 70 rises or immediately before starting to descend, and the switch SW5 is turned on.
Turns on when is falling or just before starting to rise.

The chart of FIG. 9 shows the operation timing of each member. The horizontal axis of FIGS. (A) to (h) is the main slider stroke, and the scale is the same. The main slider movement start point A indicates that the main slider is in the forward movement position, and the main slider movement end point B indicates that the main slider is in the rearmost movement position.

(B) and (c) show the movement periods of the slider tray 31 and the carrier 20, respectively. The movement end point C of the slider tray 31 is earlier than the movement end point D of the carrier 20. FIG. 6D shows a state where the disc position detecting member 26 is moved up and down. Part (e) of FIG. 7 shows a state in which the turntable is raised and lowered. The point G at the raised position of the turntable is detected by the switch SW4 as described above. FIG. 6F shows the rotating state of the cam gear 63. Figure (g) shows the rotatable state of the members of the planetary gear mechanism. The carrier can rotate before the H point, and the internal gear can rotate after the J point.

FIG. 7 (h) shows how the stocker is moved up and down and the loading slider is moved. The stocker is moved up and down before the carrier rotation limit H point. Further, the loading slider is driven after point F at which the disc position detection member 26 is lowered.

Next, the operation of the disc reproducing apparatus having the above structure will be described. The device is controlled by a control circuit according to the operation of each of the switches SW1 to SW10 and the operation of a key (not shown) provided on the front panel of the housing. In the initial state, as shown in FIG. 5, the carrier withdrawing member 36 and the loading hook 40 are arranged so that the carrier 2 in the stocker 21
It is in a state of being locked with 0 and 20. Further, the main slider 34 is at a position immediately before it is separated from the gear 62, and the gear 62 is rotated clockwise as viewed from above.

The turntable 70a is in a raised state. The stocker 21 is at the lowest position. Further, the brake member 60 is moved rearward so that the protrusion 6
0c meshes with the internal gear 52 to stop it.
(At this time, the switches SW2, SW4, and SW8 are on, and the switches SW5 and SW7 are off.) Therefore, the second motor 50 operates the carrier gear 5
Only 4 can be rotated. Therefore, the stocker lifting slider 25 is moved by the second motor.
The stocker 21 shown in FIG.

In this state, the disk to be reproduced can be selected by moving the stocker 21 up and down to match the height of the carrier of the disk to be reproduced with the loading hook 40. That is, the stocker 21 is raised by the second motor, and the counter of the control circuit that stores the stocker position is up-counted from 0 by turning on / off the switch SW6, so that the height of the carrier of the disc to be reproduced is adjusted to the loading hook 40. be able to. Also,
It is also possible to match the height of the carrier 20 for disc exchange with the carrier drawing member 36.

Disc exchange will be described first. The disc exchange can be performed in the initial state described above, but can also be performed in the reproduction state in which the loading hook 40 moves the carrier 20 onto the turntable 70a. (At this time, the switch SW7 is turned on and the switch SW8 is turned on.) That is, as described above, when the main slider 34 is at the position shown in FIG. 5, the turntable 70a is in a raised state. If one of the carriers 20 is transferred onto the turntable 70a by the loading hook 40 before the turntable 70a is lifted, the disc on the carrier 20 is held by the turntable 70a and the clamper 10 and is in a reproduction state. Has become. Even if the main slider 34 moves from the position shown in FIG. 5 to the front (downward in the drawing), the state of the brake member 60 does not change and the gear 52 does not rotate, so the reproduction state does not change.

After the stocker elevating slider 25 is moved by the second motor 50 to elevate the stocker 21 and the height of the carrier 20 for disc exchange is adjusted to the carrier withdrawing member 36, the main slider 34 is moved to the first motor 7 Is sent in the forward direction.

At the initial stage of the movement process of the main slider 34, the rotating member 35 shown in FIG. 3 is rotated clockwise as viewed from above, and its shaft 35a has a J shape of the right side chassis 2 shown in FIG. The shaft 35a of the rotating member 35 is engaged with the portion of the groove 2a in the direction perpendicular to the moving direction of the slider tray 31.
Is prevented from moving in the front-back direction, and the slider tray 31 supporting the rotating member 35 does not move.

Similarly, the carrier pull-out member 36 does not move in the initial stage of the forward movement of the main slider 34. In the course of the forward movement of the main slider 34, the rotating member 37 shown in FIG. 3 is guided by the recess 34c of the main slider 34 to rotate, and the shaft 37a of the rotating member 37 enters into the straight portion of the J-shaped groove 31a. The pullout member 36 is driven forward. The carrier 20 is sent and the front end portion is the lower plate 31.
The tongue pieces 32a, 32a are supported by the slider tray 31.

When the main slider 34 moves further,
The recess 34d of the main slider 34 engages with the shaft 35a to rotate the rotating member 35 counterclockwise. Then, the axis 35
a is engaged with a portion of the J-shaped groove 2a extending in the moving direction of the slider tray 31, the slider tray 31 becomes movable, and the shaft 35a is pushed by the recess 34d so that the slider tray 3
1 moves in the front direction, that is, in the protruding direction from the housing.

That is, the slider tray 31 moves from the position shown in FIG. 5 to the position shown in FIG. At this time, the switch SW3 is turned off. In the state shown in FIG. 6, the slider tray 31 projects from the housing, and the carrier 20 is also drawn out by the carrier drawing member 36 so as to be integrated with the slider tray 31. Carrier 2 in the state shown in FIG.
The disk on 0 can be replaced or the disk can be placed on the carrier 20.

The storage of the carrier 20 in the stocker 21 is performed by reversing the motor 7. At this time axis 3
5a is guided by the J-shaped groove 2a, and the rotating member 35 rotates clockwise. Therefore, after the slider tray 31 is retracted (detected by turning on the switch SW4), the main slider 34 can be further retracted. The disks of all carriers can be replaced by repeating the steps of moving the stocker up and down to select the carrier, projecting the selected carrier out of the housing, and replacing the disks.

Next, the operation of reproducing a disc of an arbitrary carrier from the initial state will be described. In the initial state shown in FIG. 5, when the carrier 20 of the disc to be reproduced by moving the stocker up and down is aligned with the loading hook 40 and the main slider 34 is retracted by the first motor 7, the teeth of the gear 62 mesh with the rack 34b. Gear 62 fits
And the cam gear 63 is rotated counterclockwise.

Then, the turntable 71a is lowered from the raised position, the brake member 60 is moved forward, and the carrier gear 54 is moved.
Is stopped. (This is detected when the switch SW5 is turned on.) The cam gear 63 is shown in FIG.
During rotation from point D to point B in (f), as shown in FIG. 9D, the disc position detection member 26 once rises and then falls.

Then, the internal gear 52 is rotated by the second motor 50, and the loading slider 9 is sent backward. The carrier 20 is mounted on the turntable 7 by the loading slider 9 via the loading hook 40.
Moved to 0a. (The state is detected when the switch SW7 is turned on.) After that, the main slider 34 is moved forward by the rotation in the opposite direction to the front of the first motor 7 until just before it is separated from the gear 62 (the position shown in FIG. 5). Then, the turntable 70a is lifted to clamp the disc and the disc is brought into a reproducing state. (This state is detected by turning on the switch SW4.) In this state, the first motor 7 is in a state of moving the main slider 34, and the disc can be exchanged as described above. That is, this device allows the disc to be exchanged during playback.

The operation of returning the disc to the stocker 21 after the reproduction of the disc is carried out by rotating the first motor 7 and the second motor 50 in the opposite direction to that when the disc is mounted on the turntable. That is, first, the first
The motor 7 moves the main slider 34 from point D to point B shown in FIG. 9 (the main slider 34 retracts from the position shown in FIG. 5. This state is detected by turning on the switch SW5. ) Then the second motor 50
Thus, the loading slider 9 is advanced from the reproducing position to the position shown in FIG. 5 and the carrier 20 is stored in the stocker 21. In this state, the initial state shown in FIG. 5 is obtained. (This state is detected when the switch SW8 is turned on.) The position of the carrier of the disc being reproduced is stored by the control circuit, and the disc is controlled to be returned to its original position after reproduction. .

As described above, the disc is reproduced or the disc in the stocker is exchanged, but when the slider tray 31 is moved from the outside of the casing to the inside of the casing, that is, the carrier 20 is stored in the stocker 21 from the outside of the casing. After that, the main slider 34 is moved to point G shown in FIG. (This is detected when the switch SW4 is turned on.) By moving the main slider 34 in this way, the disc position detecting member 26 rises, but the disc position detecting member 26 moves to the position of the disc or the carrier 20. If the rise prevents these members from rising due to the shift, the switch SW10 does not operate. At that time, the slider tray 31 is moved to the outside of the housing. Then, the slider tray 31 can be moved into the housing after correcting the displacement of the disk.

The carrier 20 is moved from the reproducing position to the stocker 21.
Similarly, when returned to the inside, the disc position detection member 26 is similarly raised, and if the disc or the carrier 20 is displaced, the returned carrier 20 is discharged to the outside of the housing. In this case, the stocker 21 is lowered by one stage of the carrier, and the height of the carrier to be discharged is adjusted to the height of the carrier drawing member 36, and then the main slider 33 is moved to the outside of the housing.

Further, when the apparatus is stopped after the disk reproduction or the disk exchange is completed, the disk position detecting member 2
6 is raised, and the stocker 21 is lowered to insert the disc position detecting member 26 into all the discs and carriers in the stocker. By doing this,
Even when a force is applied to the disk and the carrier in the stocker 21 by moving the device, the carrier and the disk are not displaced.

[0090]

According to the recording medium reproducing apparatus of the present invention,
The first transfer means includes the first transfer means for transferring the recording medium to the outside of the apparatus, the second recording medium transfer means for transferring the recording medium to the reproducing means, and the positioning means for selecting the recording medium. By making the recording medium transfer path of (1) a path that does not pass through the reproducing means, it is possible to exchange the recording medium during reproduction.

Further, since the guide groove for guiding the recording medium in the second transfer means is provided in the apparatus main body or a member fixed to the apparatus main body, the recording medium can be smoothly guided and transferred.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a portion of a disc reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a portion of the disc reproducing apparatus according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a portion of a disc reproducing apparatus according to an embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a portion of a disc reproducing apparatus according to an embodiment of the present invention.

FIG. 5 is a plan view showing a portion of the disc reproducing apparatus according to the embodiment of the present invention.

FIG. 6 is a plan view showing a portion of the disc reproducing apparatus according to the embodiment of the present invention.

FIG. 7 is a schematic side view showing a portion of the disc reproducing apparatus according to the embodiment of the present invention.

FIG. 8 is a side view showing a portion of the disc reproducing apparatus according to the embodiment of the present invention.

FIG. 9 is a chart showing the operation of the disc reproducing apparatus according to the embodiment of the present invention.

FIG. 10 is a block diagram showing an outline of a disc reproducing apparatus which is an embodiment of the present invention.

FIG. 11 is a schematic view showing a conventional example.

FIG. 12 is a schematic view showing another conventional example.

[Explanation of symbols]

1 main chassis, 1a, 1b guide groove, 1c, 1
d guide rod, 1e frame upper surface, 1f recess 2 right side chassis 2a J-shaped groove 3 gear train support member 4 guide plate 5 clamper support member 5a guide groove 6 stocker cover 7 first motor 8 gear 9 loading slider, 9a Rack, 9b, 9c
Protrusion, 9d Inclined groove 10 Clamper 11 Switch operating rod 12 Switch substrate 13 Switch operating slider, 13a Convex portion 20 Carriers 20a, 20b Hook engaging notch,
20c hole 20d recess, 20e large-diameter disk recess, 20f
Small diameter disc recess 20g Recess 21 Stocker, 21a Groove, 21b Shaft 22 Front plate, 22a Shaft 23 Rear plate, 23a Shaft, 23b Tongue piece 24 Leaf spring 25 Stocker lift slider, 25a Rack, 25b
Groove, 25c stepped groove, 25d hole 26 disk position detection member, 26a, 26b rod-shaped protrusion 27 compression coil spring 28 switch operating arm, 28a hole, 28b protrusion 29 switch operating arm, 29a shaft, 29b protrusion 31 slider tray, 31a J-shape Groove, 31b Protrusion 32 Lower plate, 32a Tongue piece 33 Guide plate 34 Main slider, 34a, 34b Rack, 34
c, 34d Recess 35 Rotating member, 35a Shaft 36 Carrier drawing member, 36a Hook 37 Rotating member, 37a Shaft 38 Switch holding member 39 Loading hook support member, 39a L-shaped groove,
39b Guide groove 40 Loading hook, 40a Hook 41 Rotating member, 41a, 41b Shaft 50 Second motor 51 Driving gear, 51a Large gear, 51b Sun gear 52 Internal gear, 52a External tooth, 52b Internal tooth 53 Planetary gear 54 Carrier gear 55 Holding members 56, 57 Gear 58 Arm 59 Disc position detection member operating slider, 59a Protrusion, 59b Cam follower portion 60 Brake member, 60a Cam follower portion, 60
b, 60c protrusion 61 shaft 62 gear, 62a protrusion, 62b recess 63 cam gear, 63a protrusion, 63b cam 64 gear 65 rotating member, 65a tooth, 65b cam, 65c
Shafts 66, 67 Lever 68 Tension coil spring 69 Lifting member, 69a Shaft 70 Mechanism chassis, 70a Turntable,
70b Optical pickup 71 Slider, 71a J-shaped groove, 71b Elevating guide groove 72 Tension coil spring SW2-SW10 switch

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masashi Yamaguchi 1-21, 5 Ogawa Higashi, Akigawa-shi, Tokyo Within Kenwood Precision Co., Ltd. (72) Inventor Ryota Okabe 1-21, 5 Ogawa-Higashi, Akigawa, Tokyo Kenwood Precision (56) Reference JP 5-120782 (JP, A) JP 6-259870 (JP, A) JP 1-224969 (JP, A) JP 63-16463 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 17/26

Claims (2)

(57) [Claims] 1. A stocker capable of accommodating a recording medium, a plurality of carriers on which the recording medium is placed and accommodated in the stocker, reproducing means for reproducing the recording medium, and the carrier inside and outside the stocker. And a second transfer means for transferring the carrier between the inside of the stocker and the reproducing means, and the stocker and the first transfer means and the second transfer. Positioning means for relatively positioning the means, and the second transfer means for guiding the carrier to a reproducing position in the reproducing means and fixing the carrier to the apparatus main body for holding the carrier at the position. A guide groove provided on the member, and the positioning means in a state where one carrier is being transferred to the reproducing means by the second transfer means. Recording by driving so that another carrier can be transferred to the outside of the apparatus by the first transfer means so that another recording medium can be exchanged during reproduction of one recording medium. Media playback device. 2. The recording medium reproducing apparatus according to claim 1, wherein at least one of the guide grooves is provided in a member constituting the reproducing means.