JP3427333B2 - 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 device provided with a recording medium exchanging device, and more particularly to a recording medium reproducing device in which recording mediums are stacked and stored in a stocker.

[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.

In such a disc reproducing apparatus, the disc is placed on the carrier and stored in the magazine, and the selected disc is transferred to the reproducing position together with the carrier by the transferring means, and is also transferred from the reproducing position into the magazine. Will be returned. The transfer means is provided with a hook, and the hook is engaged with the notch of the carrier, and any carrier can be pulled out by the hook as the transfer means moves up and down.

A necessary clearance is provided between the hook and the notch in the carrier so that the hook does not come into contact with the carrier when the transfer means moves up and down. The protrusion of the leaf spring attached to the magazine is press-fitted into the recess provided in the carrier, and the carrier is positioned in the magazine by a click action.

In such a disk reproducing apparatus, when a strong impact is applied to the carrier in the magazine during the transfer of the apparatus, the recess of the carrier and the convex portion of the leaf spring are disengaged from each other and the carrier is fixed in the magazine. There was a risk of deviation.
When the carrier is thus displaced, there is a problem that the hook comes into contact with the carrier when the transfer means is moved up and down in order to select the disc to be reproduced, and the transfer means is prevented from moving up and down.

In the disk reproducing apparatus proposed in Japanese Patent Laid-Open No. 4-38663, a stocker is provided in the apparatus so as to be able to move up and down, and a carrier on which a disk is placed is housed in the groove of each stage of the stocker. . The stocker is moved up and down so that the carrier on which the selected disk is placed matches the transfer height of the disk transfer means.

The stocker lifting means in this apparatus is
It is composed of a screw rod rotatably provided on the chassis and a nut provided at the bottom center of the stocker so as to be screwed to the screw rod. The position of the threaded rod on the chassis corresponds to the center hole of the disc stored in the stocker. The diameter of the screw rod is smaller than that of the center hole of the disc.

Therefore, by rotating the screw rod, the stocker is moved up and down. Further, when the stocker is lowered, the screw rod is inserted into the central hole of the disc in the stocker.

When the stocker is lowered, the screw rod is inserted into the notch for arranging the reproducing means in the carrier on which the disc is not placed.

However, the notch is formed large so that the turntable and the pickup can be inserted therethrough. Therefore, the notch of the carrier and the screw rod are largely separated from each other. That is, even in this device, it was not possible to prevent the carrier from being displaced.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to prevent displacement of a carrier on which a recording medium is placed in a stocker. It is to provide a recording medium reproducing device.

[0012]

A recording medium reproducing apparatus of the present invention comprises a carrier having a recording medium mounting portion, a locking portion formed at a portion other than the recording medium mounting portion of the carrier, A stocker capable of accommodating a carrier, a reproducing means for reproducing a recording medium, and a transferring means for transferring the carrier between the inside of the stocker and the outside of the apparatus or a reproducing position,
The carrier includes a positioning unit that relatively positions the heights of the stocker and the transfer unit, and a carrier fixing unit that is driven to lock the carrier, and the locking unit is attached to the carrier. The carrier fixing portion is a rod-shaped projection having a diameter that allows the carrier to be positioned when it is inserted into the hole, and the carrier fixing portion is used when the carrier is not moving the carrier into or out of the stocker. The carrier is configured to be inserted through the stopper to lock the carrier.

Further, the recording medium reproducing apparatus of the present invention is
A carrier having a recording medium mounting portion and a locking portion, a stocker capable of accommodating the carrier, a reproducing means for reproducing a recording medium, and a carrier for transferring the carrier between the inside of the stocker and the outside of the apparatus. One transfer means, and a second transfer means for transferring the carrier between the inside of the stocker and the reproduction position,
Positioning means for relatively positioning the heights of the stocker and the first and second transfer means, and a carrier fixing portion driven to be locked to the locking portion of the carrier are provided. The stopper is a hole formed in the carrier at a position other than the recording medium mounting part, and the carrier fixing part is a rod-shaped protrusion having a diameter that allows the carrier to be positioned when the carrier is inserted into the hole. The first transfer means or the second transfer means is configured to insert the locking portion and lock the carrier when the carrier is not inserted into or removed from the stocker.

Further, the recording medium reproducing apparatus of the present invention is
In each of the recording medium reproducing devices, the carrier fixing portion is configured by an elevating member which is inserted into the hole portion and is formed so as to be able to ascend and descend. Further, in the recording medium reproducing apparatus, the elevating member is configured to be urged by a spring so as to rise by the elastic force of the spring.

Further, the recording medium reproducing apparatus of the present invention is
In each of the recording medium reproducing devices, the locking portion further includes a hole portion arranged so as to be coaxial with a hole of the recording medium placed on the recording medium placing portion, and the carrier fixing portion is A hole portion formed at a location other than the recording medium mounting portion, and a hole portion arranged so as to be coaxial with the hole of the recording medium mounted on the recording medium mounting portion, respectively; This is provided with the first and second fixing members. In addition, in each of the recording medium reproducing devices, a detection unit that detects that the elevating member has risen is provided, and a drive mechanism that drives the elevating member is driven to raise the elevating member, When the detection unit does not detect the rise of the elevating member, it is determined that the recording medium or the carrier is displaced, and the predetermined control is performed.

[0016]

According to the recording medium reproducing apparatus of the present invention, the elevating member is raised in a state where the carrier on which the recording medium is placed is returned to the inside of the stocker. Even if a strong impact is applied, the carrier hole is inserted into the elevating member, so that the carrier does not shift in the stocker. Further, if the elevating member is urged by a spring so as to be lifted by the elastic force of the spring, troubles due to interference between the elevating member and the carrier can be prevented.

[0017]

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 casing and the position outside the casing 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.

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

The elevating member 26 is provided so as to be vertically movable so as to pass through the central hole of the disk placed on the carrier in the stocker 21, and the first transfer means or the second transfer means transfers the carrier to the stocker. At the timing of entering and exiting from 21, the carrier is located below the entry and exit position of the carriers.

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 or the stocker 21 can be replaced 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.

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 placing a disk by means of the large-diameter disk recess 20e or the small-diameter disk recess 20f, and is supported by the 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 elevating 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 elevating member 26 urges the elevating member 26 upward, and the concave portion formed at the tip of the arm 58 shown in FIG. The base end of 26a is locked. The arm 58 moves the elevating member 26 up and down, but when the elevating member 26 moves up, the switch SW10 is operated via the switch operating rod 11. The rod-shaped protrusion 26 a is inserted through the disk center hole in the stocker 21, and the rod-shaped protrusion 26 b is inserted in the hole 20 of the carrier 20 in the stocker 21.
Insert c. The hole 20c is formed outside the large-diameter disk recess 20e in the carrier 20. Further, the stocker 21 is provided with a hole 21c at a position corresponding to the hole 20c of the carrier 20 in the stocker 21.

The switch actuating arm 28 is rotatably supported by the shaft 1g of the main chassis 1 through the hole 28a, and the right end portion thereof abuts 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 operating 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 to the outside of 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 drawing 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 engages with the straight portion of the J-shaped groove 31a, and the carrier drawing member 36 is driven.

A shaft 35a of a rotating member 35 rotatably supported by the slider tray 31 engages with a J-shaped groove 2a of the right side chassis 2 shown in FIG. 1 and engages with a 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, the carrier drawing member 36 is first moved forward, and then the slider tray 31 is moved forward together with the carrier drawing 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, 32a are fitted into the recesses 1f, 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, 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 so 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 speed reducing 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 outer 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 provided in the bottom surface of the main chassis 1 shown in FIG. 1 and a hole provided on the lower left side 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 elevating / lowering 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 urged forward by a tension coil spring 72. Lifting member operating slider 59
The cam follower portion 59b provided therein engages with the protrusion 63a of the cam gear 63 and is driven by the cam gear 63 in the front-rear direction. Then, the cam-shaped protrusion 59a provided on the lower surface thereof engages with the edge of the arm 58 rotatably supported by the holding member 55 to rotate the arm 58.

That is, the main slider 34 raises and lowers the elevating member 26 shown in FIG. 2, but raises the elevating member 26 when the carrier 20 is not in and out of the stocker 21. For example, carrier 2 with the 8 cm disc misaligned
When 0 is stored in the stocker 21, the lifted up / down member 26 is prevented from moving up due to the displaced disc, and the switch SW10
Does not operate, it is possible to detect disc displacement, carrier displacement, and the like.

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

When the elevating member 26 is raised, the rod-shaped projections 26a and 26b are inserted into the central hole of the disk 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, due to the lifting stroke of the lifting member 26, a rod-shaped projection 26a is formed in the center hole of the disk above the loading hook 40, and the carrier 20
The rod-shaped protrusions 26b are not inserted into the holes 20c of the respective. 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, the lifting member 26
Even if vibration is applied when the
And the disc mounted on the carrier does not shift.

When the elevating member 26 descends, the carrier withdrawing member 36 and the loading hook 40 can withdraw the carrier 20 in the stocker 21 in the respective directions. It should be noted that when the elevating member 26 is descending, even if vibration or the like is applied to the device, the carrier pulling-out member 36 and the loading hook 40 are locked by the rod-shaped projection 26b.
Since they are respectively locked to the carriers 20 at positions where there is no, those carriers 20 do not shift.

Rod-like projections 26a and 26 of the elevating member 26
By providing a taper at the tip of b, a small displacement of the disk or carrier can be corrected when the elevating 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 which is rotatably supported on the slightly rear right side of the main chassis 1, and the gear 64 is further provided on a rotary member 65 which is 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 rotary 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. 3D shows the state where the elevating 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. 6 (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 where the elevating member 26 descends.

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 stocker 21 can be moved up and down to match the height of the carrier of the disk to be reproduced with the loading hook 40 to select the disk to be reproduced. 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 to adjust the height of the carrier 20 for disc exchange 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 at the beginning 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.
While rotating from point D to point B in (f), the elevating member 26 once rises and then descends, as shown in FIG. 9 (d). Then, the internal gear 52 is rotated by the second motor 50, and the loading slider 9 is sent backward. The carrier 20 is moved onto the turntable 70 a by the loading slider 9 via the loading hook 40. (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,
With this device, it is possible to exchange discs 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 elevating member 26 rises, but the elevating member 2
If the position of the disk 6 or the carrier 20 is prevented from rising by these members due to the positional displacement, 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 it is returned to the inside, the elevating member 26 is likewise 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.

When the apparatus is stopped after the disk reproduction or the disk replacement is completed, the elevating member 26 is raised and the stocker 21 is lowered to insert the elevating member 26 into all the disks and carriers in the stocker. Let By doing so, 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.

[0088]

According to the recording medium reproducing apparatus of the present invention,
Since the elevating member is raised in the state where the carrier on which the recording medium is placed is returned to the stocker, even if a strong shock is applied to the carrier in the magazine during the transfer of the device in that state, the hole of the carrier is lifted. The carrier will not slip in the stocker because it is inserted into the. Further, if the elevating member is urged by a spring so as to be lifted by the elastic force of the spring, troubles due to interference between the elevating member and the carrier can be prevented.

If the carrier is pulled out in two directions from the stocker so that the disk in the stocker can be exchanged even during reproduction, the carrier easily shifts in the stocker. However, when the present invention is applied to such a disk reproducing apparatus. The effect is particularly great.

[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.

[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 lifting 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-shaped 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 Elevating member operating slider, 59a Protrusion, 59b
Cam follower section 60 Brake member, 60a Cam follower section, 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 front page (72) Inventor Masafumi Yamaguchi 1-21, 5 Ogawa Higashi, Akigawa, Tokyo Kenwood Precision Co., Ltd. (72) Inventor Ryota Okabe 1-21, 5 Ogawa Higashi, Akigawa, Tokyo Kenwood Precision (56) Reference JP-A-5-120782 (JP, A) JP-A-6-349186 (JP, A) Actual development Sho-58-179680 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 17/26

Claims (6)

(57) [Claims] 1. A carrier having a recording medium mounting portion, a locking portion formed at a portion other than the recording medium mounting portion of the carrier, a stocker capable of accommodating the carrier, and a recording medium to be reproduced. Reproduction means, transfer means for transferring the carrier between the inside of the stocker and the outside of the apparatus or a reproduction position, positioning means for relatively positioning the heights of the stocker and the transfer means, and the relationship between the carriers. A carrier fixing portion that is driven to lock to the stopper, the locking portion is a hole formed in the carrier, and the carrier fixing portion fixes the carrier when inserted into the hole. It is a rod-shaped projection having a diameter that allows positioning, and is configured to insert the locking portion and lock the carrier when the transfer means does not move the carrier into and out of the stocker. Recording medium reproducing apparatus. 2. A carrier having a recording medium mounting portion and a locking portion, a stocker capable of accommodating the carrier, a reproducing means for reproducing a recording medium, and the carrier inside the stocker and outside the apparatus. And a second transfer means for transferring the carrier between the stocker and the reproduction position.
Transfer means, and positioning means for relatively positioning the heights of the stocker and the first and second transfer means,
A carrier fixing portion that is driven to be locked to a locking portion of the carrier, wherein the locking portion is a hole formed in a portion other than the recording medium mounting portion in the carrier, The carrier fixing portion is a bar-shaped projection having a diameter that allows the carrier to be positioned when it is inserted into the hole, and is locked when the first transfer means or the second transfer means does not move the carrier into or out of the stocker. A recording medium reproducing device, characterized in that the recording medium reproducing device is configured to be inserted through a portion to lock the carrier. 3. The recording medium reproducing apparatus according to claim 1, wherein the carrier fixing portion is configured by an elevating member which is inserted into the hole and is capable of ascending and descending. 4. The recording medium reproducing apparatus according to claim 3, wherein the elevating member is configured to be biased by a spring so as to be lifted by the elastic force of the spring. 5. The locking portion further includes a hole portion arranged to be coaxial with a hole of the recording medium placed on the recording medium placing portion, and the carrier fixing portion includes the recording medium. First and first holes that are respectively inserted through a hole formed in a place other than the mounting portion and a hole arranged so as to be coaxial with the hole of the recording medium mounted on the recording medium mounting portion. The recording medium reproducing apparatus according to claim 1, further comprising two fixing members. 6. A detection unit is provided for detecting that the lifting member is raised, and the detection unit is driven even if a drive mechanism for driving the lifting member is driven to raise the lifting member. 6. The recording medium reproducing apparatus according to claim 5, wherein when the rise of the elevating member is not detected, it is determined that the recording medium or the carrier is displaced and a predetermined control is performed.