JP3336551B2 - 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 having a recording medium exchange apparatus, and more particularly to a recording medium reproducing apparatus in which recording media are stored in a stocker.

[0002]

2. Description of the Related Art Conventionally, as a recording medium reproducing apparatus having a recording medium exchange apparatus, as shown in FIG. 14, a magazine in which a disk is inserted is mounted in the apparatus from the outside, and a disk in the magazine is selected. There was a disc player for playing.

In such a disk reproducing apparatus, a disk is placed on a carrier and stored in a magazine, transferred to a reproducing position together with the carrier, and returned from the reproducing position into the magazine. The carrier is provided with a recess for positioning the disc, and the disc is placed in the recess. However, when the carrier is transferred at a high speed, the disc may be displaced from the recess. Further, even when the carrier is not being transported, if the apparatus vibrates, the disc in the magazine may be displaced.

Usually, the carrier is provided with a small-diameter disk positioning recess at the center of the large-diameter disk positioning recess so that the large-diameter disk and the small-diameter disk can be positioned. Therefore, the distance between the upper surface of the small-diameter disk and the upper carrier is large, and the small-diameter disk is particularly likely to be displaced. If the disc is left with its position shifted, a problem occurs when the small-diameter disc is reproduced.

[0005] The disc reproducing apparatus proposed in Japanese Patent Application Laid-Open No. 4-38663 has a stocker provided in the apparatus, and a carrier on which a disc is mounted is housed in each groove of the stocker. The stocker is raised and lowered so that the carrier on which the selected disk is mounted is adjusted to the transport height of the disk transport means.

[0006] In this apparatus, means for raising and lowering the stocker includes:
It is composed of a screw rod rotatably provided on the chassis and a nut provided at the center of the bottom of the stocker to be screwed to the screw rod. The position of the screw rod in the chassis is a position corresponding to the center hole of the disk stored in the stocker. The diameter of the threaded rod is smaller than the diameter of the center hole of the disk.

Accordingly, the stocker is raised and lowered by rotating the screw rod. When the stocker is lowered, the screw rod is inserted into the center hole of the disk in the stocker.

In other words, in this apparatus, the disc does not shift in the stocker even when vibration is applied while the stocker is lowered.

However, with this configuration, it was not possible to detect a disc shift when the disc was returned into the carrier. Therefore, when the disk is returned into the stocker while being shifted from the stocker, there is a problem that the screw bar and the disk interfere with each other when the stocker is lowered.

[0010]

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 provide a recording medium which is displaced when stored in a stocker. It is therefore an object of the present invention to provide a recording medium reproducing apparatus for detecting this and discharging the recording medium out of the apparatus.

[0011]

According to the present invention, there is provided a recording medium reproducing apparatus comprising: a stocker capable of accommodating a recording medium; reproducing means for reproducing the recording medium; Transfer means for transferring between stockers, positioning means for relatively positioning the height of the stocker and the transfer means, a switch for detecting a displacement of storage of the recording medium in the stocker, and a recording medium in the stocker. And a recording medium position detection member configured to be operated when the switch is operated and the recording medium is not moving the recording medium into and out of the stocker.

When the switch is not operated by the recording medium position detecting member, the recording medium is transferred out of the apparatus.

[0013]

According to the recording medium reproducing apparatus of the present invention, after the recording medium is returned into the stocker, when the switch for detecting the storage deviation of the recording medium detects the storage deviation of the recording medium, the switch is returned to the stocker. The recording medium transferred to the outside of the apparatus corrects the positional deviation of the recording medium, thereby preventing a trouble due to the positional deviation of the recording medium.

A recording medium position detecting member configured to operate a switch for detecting a storage displacement of the recording medium in the stocker and to be operated when the transfer means does not move the recording medium into and out of the stocker is provided. In the case where the switch is not operated when the recording medium position detecting member is operated, the recording medium is transported to the outside of the apparatus to correct the position deviation of the recording medium, thereby preventing a trouble due to the position deviation of the recording medium. it can.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. First, an outline of the disc reproducing apparatus of the embodiment will be described with reference to FIG. A carrier (not shown in FIG. 10) on which a disk can be placed is stored on a shelf at each stage of the stocker 21 arranged in the housing, and the carrier is moved up and down in order to adjust an arbitrary carrier to the drawer height.

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

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

The disk position detecting member 26 is connected to the stocker 21.
Is provided so as to be able to move up and down so as to pass through a center hole of a disc placed on a carrier inside the carrier, and when the first transfer means or the second transfer means moves the carrier in and out of the stocker 21, the carrier is removed from the carrier. It is located below the entry / exit position.

Since the first transfer means pulls the carrier out of the stocker 21 to the opposite side of the disc reproducing means, the disc transfer or stocker in the stocker 21 can be maintained regardless of whether the disc reproducing means holds the disc or not. 21 can be added.

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

Next, an embodiment will be described in detail with reference to FIGS. 1 to 4 are exploded perspective views showing respective parts of a disk reproducing apparatus according to an embodiment of the present invention. FIG.
, 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, in the following description. In addition, the posture of each part in FIGS.
Has not changed in relation to the ones.

A reference numeral 1 shown in FIG. 1 denotes a main chassis, which supports all the 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 a belt and an 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 a rack 9 on the lower left side thereof is engaged with the external teeth 52a of the internal gear 52 shown in FIG.
a, and is driven in the front-rear direction by the internal gear 52. 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 a stocker 2 shown in FIG.
The switch operating rod 11 is fastened to the upper surface of the front side of the main chassis 1 so as to cover the upper part of the main chassis 1.
Is supported movably up and down by a cylindrical portion extending downward at the center of the frame. The switch SW10 is fixed to the stocker cover 6 so as to face the switch operating rod 11 via the substrate. Although not shown, a locking bar 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 the locking rod is substantially the same as the length of the switch operating rod.

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

The carrier 20 shown in FIG. 2 is capable of positioning and mounting a disk by the large-diameter disk recess 20e or the small-diameter disk recess 20f, and is supported by grooves 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 is engaged with the recess 20g of the carrier 20 to lightly position the carrier 20. The carrier 20 has a hook engaging notch 20b whose carrier extracting member 3 shown in FIG.
6 hook 36a. Therefore, the carrier 20
Can be moved between the stocker 21 and the outside of the housing by the carrier drawer member 36.

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

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

The elongated hole 25e of the stocker elevating slider 25 is formed in the guide rod 1c of the main chassis 1, and the groove 25b,
Reference numeral 25b is inserted through a shaft (not shown) on the main chassis. For this reason, the stocker lifting slider 25 is supported by the main chassis 1 so as to be slidable in the left-right direction. The stocker lifting slider 25 is driven by the rack 2
This is performed by a gear 56 (shown in FIG. 4) that meshes with the gear 5a.
The stocker 21 is moved up and down by moving the stocker elevating slider 25. A stocker moving means is constituted by the stocker lifting slider 25 and its driving mechanism.

The disc position detecting member 26 has a hollow portion provided at the bar-like projections 26a and 26b, and engages with the guide bars 1c and 1d of the main chassis 1 shown in FIG. The compression coil spring 27 sandwiched between the main chassis 1 and the disk position detecting member 26 urges the disk position detecting member 26 upward, and the concave portion formed at the tip of the arm 58 shown in FIG. The base end of the rod-like projection 26a of the detection member 26 is locked. The arm 58 is connected to the disc position detecting member 26.
Is moved up and down, but when the disk position detecting member 26 rises, the switch SW10 is operated via the switch operating rod 11. The rod-like projection 26a passes through the center hole of the disc in the stocker 21, and the rod-like projection 26b passes through the hole 20c of the carrier 20 in the stocker 21. In addition, this hole 2
0c is a large-diameter disc recess 20e in the carrier 20.
It is formed more outside. 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 on the shaft 1g of the main chassis 1 through a hole 28a, and the right end thereof contacts the switch SW6. Also,
The protrusion 28b is provided with a hole 25d, 2 of the stocker elevating slider 25.
The switch operation arm 28 swings every time the entry hole 25d passes through 5d. The switch SW6 is turned on and off every time the hole 25d passes. The pitch between the holes 25d is equal to the moving distance for moving the carrier 20 up and down one step.

The switch operating arm 29 is rotatably supported by a boss 1h slightly to the right in the center of the bottom surface of the main chassis 1 via a shaft 29a, and its lower rear end is in contact with the switch SW9. The projection 29b corresponds to the step to be pulled out by the carrier pull-out member 36, and is in contact with the rear end of the carrier 20 at that position. Therefore,
The switch operation arm 29 rotates when the carrier 20 is pulled out of the stocker or returned.
The switch SW9 detects that the carrier 20 has been returned into the stocker 21 by the carrier drawer member 36. Alternatively, the presence or absence of the carrier at the stage pulled out by the carrier pullout member 36 is detected. Tongue piece 23 of rear plate 23
b indicates a switch S when the stocker 21 moves to the lowermost position.
Activate W2. The stocker position when the stocker 21 is moved to the lowermost position is set to 0, the stocker position is counted up each time the switch SW6 is turned on and off when the stocker 21 is raised, and the switch SW6 is set when the stocker 21 is lowered. The control circuit can store the position of the stocker 21 by counting down the position of the stocker every time the switcher is turned on and off.

The switch holding member 38 shown in FIG. 3 has a U-shaped convex portion 38b formed on the lower surface thereof fitted into a front U-shaped concave portion 2d 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.
8 for supporting the front-rear movement. That is, the convex portion 38a of the switch holding member 38 engages with a groove (hidden and not shown in FIG. 3) provided on the right side surface of the slider tray 31, and the main chassis 1
The protrusion 1j on the left side of the groove is provided on the left side of the slider tray 31 (hidden and not shown in FIG. 3).
Is engaged.

The positional relationship between the slider tray 31 and the stocker 21 is shown in FIGS. FIG. 5 shows a state in which the carrier 20 is returned to the stocker 21 by the slider tray 31, and FIG. 6 shows a state in which the carrier 20 is drawn 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 support portion on the left and right,
The main slider 34 and the carrier pull-out member 3 are supported stably and slidably in the front-rear direction.
6 can be stably supported. Moreover, the slider tray 31
When is stored in the housing, the slider tray 31 is configured to surround the stocker 21, so that the stroke of the slider tray 31 can be increased in a narrow space, and the carrier 20 can be drawn out for a long distance.

The operating piece of the switch SW3 fastened to the switch holding member 38 is moved when the slider tray 31 is housed in the housing or during a movement stroke (forward movement stroke) outside the housing. Slider tray 3
1, but at the end of the movement stroke of the slider tray 31 out of the housing, the rear end inclined portion 31c of the slider tray 31 is opposed to the operating piece of the switch SW3, and the pressing of the operating piece is released. Is 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 a slider tray 31
Is fastened to the lower surface. The guide plate 33 and the slider tray 31 support these members movably in the front-rear direction so as to sandwich the main slider 34 and the carrier pull-out member 36.

A rack 34a provided in the front-rear direction on the lower surface of the main slider 34 meshes with the gear 8 shown in FIG. 1, and the main slider 34 moves in the front-rear direction when the first motor 7 rotates forward and backward. Is done. Main slider 3
4 is a slider tray 31 and a carrier pull-out member 36
And the gear 6 shown in FIGS. 4, 5 and 6
Rotate 2.

That is, the shaft 37a of the rotating member 37 rotatably supported by the carrier drawer member 36 engages with the J-shaped groove 31a of the slider tray 31, and can engage with the recess 34c of the main slider 34. It has become. When the main slider 34 is moving backward, the shaft 37a
The main slider 34 does not drive the carrier pull-out member 36 because the main slider 34 is engaged with the right protrusion of the shape groove 31a and is not engaged with the recess 34c.

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

The shaft 35a of the rotating member 35 rotatably supported by the slider tray 31 is engaged with the J-shaped groove 2a of the right side chassis 2 shown in FIG. It is possible. Main slider 3
4 is moving backward, the shaft 35a is in the J-shaped groove 2a.
The main slider 34 does not drive the slider tray 31 because the main slider 34 does not engage with the recess 34d.

On the other hand, when the main slider 34 moves forward, the recess 34d retracts the shaft 35a, and the shaft 35a engages with the linear portion of the J-shaped groove 2a, so that the slider tray 31 is driven.

When the main slider 34 moves forward, the carrier drawer 36 first moves forward, and then the slider tray 31 moves forward together with the carrier drawer 36. Carrier extraction member 36
Moves forward, the carrier 20 in the stocker 21
Of the lower plate 32 fastened to the slider tray 31 and placed on the tongue pieces 32a, 32a of the lower plate 32.

When the slider tray 31 is housed in the housing, the tongue pieces 32a, 32a are fitted into the recesses 1f, 1f provided on the upper surface 1e of the frame of the main chassis 1, and the tongue pieces 32a, 32a It is close to the carrier 20. When the carrier 20 is pulled out in this manner, 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 surfaces of the frame upper surface 1e determine the horizontal position of the carrier 20.

As described above, the main slider 34 can be further moved rearward after the slider tray 31 is drawn into the housing. The main slider 34 moved further rearward in this manner is shown in FIGS.
Is rotated. FIG. 5 shows the main slider 3
4 shows a state where the gear 62 starts to rotate. When the main slider 34 moves rearward, the rear end thereof
The gear 62 rotates by pushing the second projection 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 gear 62 smoothly meshes.

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 are fitted to the shafts 2b and 2c of the right side chassis 2. The rotation 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 support member 39,
The shaft 41b is engaged with the inclined groove 9d of the loading slider 9 shown in FIG. Therefore, the loading hook 40
The loading hook support member 39 and the loading slider 9 are supported so as to be movable in the front-rear direction.

FIG. 8 shows a state where the loading slider 9 drives the loading hook 40. FIG. 8A shows the driving of the loading hook 40 in which the shaft 41a (at a portion hidden by the shaft 41b) is engaged with the horizontal portion of the L-shaped groove 39a. The member 41 does not rotate, and the loading hook 40 is connected to the loading slider 9.
It moves together with. FIG. 8B shows that the shaft 41a has the L-shaped groove 3.
FIG. 8C shows a state in which the loading slider 9 has moved to the end of the movement stroke. The loading slider 9 is shown in FIG.
8C from the position shown in FIG. 8C to the position shown in FIG. 8C, the loading hook 40 hardly moves, the loading slider 9 bounces, and the moving position varies. The stopping position of the loading hook 40 is stabilized.

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

The carrier extracting member 36 and the loading hook 40 both extract the carrier 20 from the stocker 21. As shown in FIG.
The carrier 20 is displaced by the step, and the carrier 20 is not pulled.

The driving gear 51, the internal gear 52 and the carrier gear 54 shown in FIG. 4 are rotatably supported on the shaft 1h. A lower end and an upper end of the shaft 1h are supported by a hole 1k of the main chassis 1 and a hole 55a of a holding member 55 fastened to the main chassis 1 shown in FIG. The hole 55a of the holding member 55 has a hole 1k of the main chassis 1.
It is fastened to correspond. The planetary gears 53 rotatably supported on the shaft of the carrier gear 54 are internal gears 5.
2 internal teeth 52b and sun gear 5 formed on the driving gear 51
Meshes with 1b. These gears constitute a planetary gear mechanism.

A reduction mechanism driven by a second motor 50 fixed to the boss 1m of the main chassis 1 shown in FIG. 1 meshes with a large gear 51a of a driving gear 51, and the second motor 50 is Is driven 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 25a of the stocker elevating slider 25 via gears 56 and 57 rotatably supported so as to be sandwiched between the main chassis 1 and the holding member 55, and drives the stocker elevating slider 25.

The shaft 61 is fitted and supported in a hole 1p provided on the bottom surface of the main chassis 1 shown in FIG. 1 and a hole provided on the lower left surface of the loading hook support member 39 shown in FIG. I have. And the shaft 61 is a cam gear 63
And the gear 62 are rotatably supported. The projection 63a of the cam gear 63 is fitted with 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 slider 59 for operating the disc position detecting member is slidably supported in the front-rear direction above the holding member 55 through a plurality of long holes extending in the front-rear direction, and is urged forward by the tension coil spring 72. I have. In the disk position detecting member operation slider 59, a cam follower portion 59b provided on the slider 59 engages with a projection 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 thereof is
The arm 58 is rotated by engaging with the edge of the arm 58 rotatably supported on the arm 58.

That is, the main slider 34 raises and lowers the disk position detecting member 26 shown in FIG. 2, but raises the disk position detecting member 26 when the carrier 20 is not in or out of the stocker 21. For example, if the carrier 20 is stored in the stocker 21 with the 8 cm disk displaced, the disk displacement detecting member 26 is prevented from rising by the displaced disk and the switch SW10 does not operate. it can.

Incidentally, the disk position detecting member 26 is formed so as to have a vertical stroke corresponding to the carrier 20 locked by the carrier extracting member 36 and the loading hook 40, respectively. That is, the lifting stroke of the disk position detecting member 26 corresponds to two steps of the carrier.

When the disc position detecting member 26 is raised, the rod-like 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 projection 26a comes into contact with the switch operating rod 11 to operate the switch SW10, and the rod-shaped projection 26b comes into contact with the locking rod on the back surface of the stocker cover.

On the other hand, there is a situation where the stocker 21 is raised and the carrier exists above the loading hook 40. In this case, the disc position detecting member 2
6, the loading hook 40
A bar-like projection 26a is provided in the center hole of the upper disc.
The rod-shaped protrusions 26b are not inserted into the holes 20c of the carrier 20, respectively. However, in such a situation, the switch operating rod 11 is inserted into the disk center hole above the loading hook, and the locking rod on the back of the car cover is inserted into the hole 20c of the carrier 20. Therefore, regardless of the position of the stocker 21, even if vibration is applied when the disk position detecting member 26 is raised, the disk placed on the carrier 20 and the carrier does not shift.

When the disk position detecting member 26 is lowered, the carrier 20 in the stocker 21 can be pulled out in each direction by the carrier pulling member 36 and the loading hook 40. Note that, when the disc position detecting member 26 is lowered, the carrier extraction member 36 and the loading hook 40 are locked to the carrier 20 at a position where the bar-shaped protrusion 26b does not exist even if vibration is applied to the apparatus. Therefore, the carriers 20 do not shift.

The bar-like projection 26 of the disc position detecting member 26
If a taper is provided at the tips of a and 26b, a small displacement of the disc or the carrier can be corrected when the disc position detecting member 26 rises. In addition, it is possible to prevent the loading hook 40 or the carrier pull-out member 36 from coming into contact with the carrier when the stocker is moved up and down.

The brake member 60 is supported so as to be slidable 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 thereon is provided.
Are engaged with the cam 63b of the cam gear 63, and are driven in the front-rear direction by the cam gear 63. The protrusion 60b provided on the carrier 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 power transmission destination of the second motor 50 is switched by the movement of 34.
Power switching means is constituted by the brake member 60, its driving mechanism, and the planetary gear mechanism.

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

The shafts 69a of the elevating member 69 are engaged with the vertical guide grooves 1b of the main chassis 1 and the oblique elevating guide grooves 71b of the slider 71. Therefore, the lifting member 69 is attached to the main slider 3.
4 moves up and down through 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 a rotating shaft of the disk motor. Light Pickup 7
Reference numeral 0b is attached to the mechanism chassis 70 so as to be fed in a 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 operated, and the home position of the optical pickup is detected.

When the mechanism chassis 70 is raised and the turntable 70a is raised, the disk on the carrier 20 is clamped by the turntable 70a and the clamper 10 and is driven to rotate by a disk motor. While the disk is rotating, the optical pickup 70b reproduces signals recorded on the disk by being sent in the radial direction of the disk. The member mounted on the mechanism chassis 70, the clamper 1
The playback mechanism is constituted by the drive mechanism of the mechanism chassis 70 and the drive mechanism.

The levers 66 and 67 are located close to the rotating member 65, and their respective holes 66a and 67a are fitted to the shaft (not shown) of the main chassis 1 and are rotatably supported by the main chassis 1. The rear end thereof is pressed against the cam 65b of the rotating member 65 by being urged by the tension coil spring 68. The ends of levers 66 and 67 are connected to switch S, respectively.
It contacts W4 and SW5.

The levers 66 and 67 swing in accordance with the rotation of the rotating member 65 about the axis fitted with the holes 66a and 67a. The levers 66 and 67 are connected to SW4
And SW5 is activated. The switch SW4 is turned on when the mechanism chassis 70 is raised or immediately before the mechanism chassis 70 starts to be lowered.
Turns on when is falling or just before starting to rise.

The chart in FIG. 9 shows the operation timing of each of the above members. The horizontal axes in FIGS. 7A to 7H are the main slider strokes and are scaled in the same manner. The main slider movement start point A indicates that the main slider is at the re-advance position, and the main slider movement end point B indicates that the main slider is at the last retreat position.

FIGS. 9B and 9C show the moving 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. 4D shows a state where the disk position detecting member 26 is moved up and down. FIG. 7E shows a state where the turntable is raised and lowered. The point G at the ascending position of the turntable is detected by the switch SW4 as described above. FIG. 7F shows the state of rotation of the cam gear 63. FIG. 7G shows a rotatable state of the members of the planetary gear mechanism. The carrier can be rotated before the point H, and the internal gear can be rotated after the point J.

FIG. 9H shows the movement of the stocker up and down and the movement of the loading slider. Before the carrier rotation limit H point, the stocker is moved up and down. Further, the loading slider is driven after the point F at which the disk position detecting member 26 is lowered.

Next, the operation of the disk reproducing apparatus having the above configuration will be described. The control circuit shown in FIG. 11 includes a microcomputer, a memory, an input / output interface, a driver circuit, and the like.
The signal from W10 and the signal from the reproducing unit are input,
The first motor 7 (M1) and the second motor 50 (M
2) and further outputs a play signal to the playback unit,
Further, it drives a disk motor and a pickup feed motor of the reproducing unit.

In the initial state, as shown in FIG. 5, the carrier extracting member 36 and the loading hook 40 are connected to the stocker 2.
1 are locked with the carriers 20 and 20 in FIG. The main slider 34 is at a position immediately before leaving the gear 62, and the gear 62 rotates clockwise as viewed from above.

Then, the turntable 70a is in a raised state. The stocker 21 is at the lowest position. Further, the brake member 60 is moved rearward, and the protrusion 6
0c meshes with the internal gear 52 and stops it.
(At this time, the switches SW2, SW4, and SW8 are turned on, and the switches SW5 and SW7 are turned off.)
Only 4 can be rotated. Therefore, the stocker elevating slider 25 is moved by the second motor,
Is moved up and down.

In this state, the disc to be reproduced can be selected by adjusting the height of the carrier of the disc to be reproduced by raising and lowering the stocker 21 to the loading hook 40. That is, the stocker 21 is raised by the second motor, and the counter of the control circuit for storing the stocker position is counted up from 0 by turning on and off the switch SW6, so that the height of the carrier of the disk to be reproduced is adjusted to the loading hook 40. be able to. Also,
The height of the carrier 20 for exchanging disks can be adjusted to the carrier drawer member 36.

First, disk exchange will be described. Disc replacement can be performed in the above initial state, but can also be performed in a 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 rises, the disc on the carrier 20 is held by the turntable 70a and the clamper 10 to be in the reproduction state. Has become. Then, even if the main slider 34 moves forward (downward in the figure) from the position shown in FIG. 5, the state of the brake member 60 does not change and the gear 52 does not rotate, so that the reproduction state does not change.

After moving the stocker elevating slider 25 by the second motor 50 to elevate and lower the stocker 21 to adjust the height of the carrier 20 for exchanging disks with the carrier draw-out member 36, the main slider 34 is moved by the first motor 7 Is sent forward.

In 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 is in the J-shape of the right side chassis 2 shown in FIG. Since the groove 2a is engaged with a portion of the groove 2a in the direction perpendicular to the moving direction of the slider tray 31, the shaft 35a of the rotating member 35 is engaged.
Is prevented, and the slider tray 31 supporting the rotating member 35 does not move.

Similarly, the carrier extracting member 36 does not move in the early stage of the forward movement of the main slider 34. In the course of the forward movement of the main slider 34, the turning member 37 shown in FIG. 3 is guided by the recess 34c of the main slider 34 and turns, so that the shaft 37a of the turning member 37 enters the linear portion of the J-shaped groove 31a and the carrier. The drawer member 36 is driven forward. The carrier 20 is sent and the front end portion is the lower plate 31.
Are supported on the slider tray 31 on the tongue pieces 32a, 32a.

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 shaft 35
a engages with the portion of the J-shaped groove 2a extending in the direction of movement of the slider tray 31, so that the slider tray 31 is movable and the shaft 35a is pushed by the recess 34d so that the slider tray 3
1 moves forward, that is, in the direction in which it protrudes 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 protrudes from the housing, and the carrier 20 is also drawn out by the carrier draw-out member 36 so as to be integrated with the slider tray 31. In the state shown in FIG.
The disk on disk 0 can be replaced or the disk can be placed on carrier 20.

The carrier 20 is stored in the stocker 21 by rotating the motor 7 in the reverse direction. 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. By repeatedly moving the stocker up and down to select a carrier, projecting the selected carrier out of the housing, and exchanging disks, the disks of all carriers can be exchanged.

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, after the stocker is moved up and down and the carrier 20 of the disc to be reproduced is adjusted to the loading hook 40, the main slider 34 is moved backward by the first motor 7, and the teeth of the gear 62 mesh with the rack 34b. Gear 62
And the cam gear 63 is rotated counterclockwise.

Then, the turntable 71a descends from the raised position, the brake member 60 moves forward, and the carrier gear 54
Is stopped. (This is detected when the switch SW5 is turned on.) FIG.
As shown in FIG. 9D, during the rotation from the point D to the point B in (f), the disk position detecting member 26 once rises and then descends.

Then, the internal gear 52 is rotated by the second motor 50, and the loading slider 9 is sent backward. The carrier 20 is turned on the turntable 7 by the loading slider 9 via the loading hook 40.
0a. (This state is detected when the switch SW7 is turned on.) Thereafter, the main slider 34 is rotated forward in a direction opposite to the direction in front of the first motor 7 until immediately before the main slider 34 is separated from the gear 62 (the position shown in FIG. 5). And the turntable 70a rises to clamp the disk and enter a reproducing state. (This state is detected when the switch SW4 is turned on.) In this state, the first motor 7 moves the main slider 34, and the disk can be replaced as described above. That is, in this apparatus, it is possible to change disks during reproduction.

The operation of returning the disk to the stocker 21 after the end of the disk reproduction is performed by rotating the first motor 7 and the second motor 50 in a direction opposite to that when the disk is mounted on the turntable. That is, first, the first
The main slider 34 is moved from the point D to the point B shown in FIG. 9 by the motor 7 (the main slider 34 is retracted from the position shown in FIG. 5. This state is detected when the switch SW5 is turned on. ) Then the second motor 50
5, the loading slider 9 is advanced from the reproduction position to the position shown in FIG. 5, and the carrier 20 is stored in the stocker 21. This state is the initial state shown in FIG. (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 so that the disc is returned to the original position after the reproduction. .

As described above, the playback of the disk or the replacement of the disk in the stocker is performed. When the slider tray 31 is moved from the outside of the housing to the inside of the housing, that is, the carrier 20 is stored in the stocker 21 from outside the housing. After that, the main slider 34 is moved to the point G shown in FIG. (This is detected when the switch SW4 is turned on.) By moving the main slider 34 in this manner, the disk position detecting member 26 rises, but the disk position detecting member 26 moves to the position of the disk or carrier 20. If the upward movement is prevented by these members due to the displacement, the switch SW10 does not operate. At that time, the slider tray 31 is moved out of the housing. Therefore, the user can quickly reposition the displaced disk at the correct position.

The carrier 20 is moved from the reproduction position to the stocker 21.
When the disk or the carrier 20 is displaced, the disc position detecting member 26 is similarly raised, and if there is a displacement of the disc or the carrier 20, the returned carrier 20 is discharged out of the housing. In this case, the main slider 33 is moved out of the housing after the height of the carrier to be discharged by lowering the stocker 21 by one step of the carrier is adjusted to the height of the carrier drawer member 36.

When the power of the apparatus is turned off after the completion of the disk reproduction or the disk exchange, the disk position detecting member 26 is raised, and the stocker 21 is lowered to move the disk position detecting member 26 in the stocker. Through the disc and carrier. With this configuration, even when a force is applied to the disk and the carrier in the stocker 21 by moving the apparatus or the like, the displacement of the carrier or the disk does not occur.

Next, the processing when the carrier on which the disk is placed is stored in the stocker will be described. FIG. 12 shows a routine of the control circuit when the slider tray is closed in the housing from the open state in which the slider tray protrudes out of the housing. When the tray close key provided on the operation key shown in FIG. 11 is pressed, the first motor 7 is driven in a direction to retract the main slider 34 in step S1. The main slider 34 retreats from the point A in FIG. 9, but the position where the motor 7 is stopped is detected in step S2.
In FIG. 9, the main slider 34 is moved backward to a point G at which the turntable starts to descend. When the timing is detected by the switch SW4, the process proceeds to step S3, where the first motor 7 is stopped, and the process proceeds to step S4. I do.

At point G, as shown in FIG. 9D, the timing at which the disk position detecting member 26 rises is reached.
Therefore, in step S4, it is determined whether or not the disk position detecting member 26 is raised, that is, the switch SW10
Is determined by checking whether or not is turned on. If the switch SW10 is on, this routine ends. If the switch SW10 has not been turned on, the process proceeds to step S5, and the first motor 7 is driven in a direction to advance the main slider 34 until the tray is opened. The tray open state is detected when the rear end of the slider tray 31 is separated from the switch SW3 and the switch SW3 is turned off. This routine ends in this state.

As described above, when the disk on the carrier is displaced when the slider tray 31 is closed and the lifting of the disk position detecting member 26 is prevented, the slider tray 31 is opened. Is correctly set and the tray close key is operated to close the slider tray 31.

FIG. 13 shows a routine of the control circuit when the reproduction is stopped or ended and the carrier 20 at the reproduction position is returned to the stocker 21. When the reproduction of the disc ends or the reproduction stop key is pressed, the turntable is lowered in step S6. That is, the first motor 7 is driven in a direction to move the main slider 34 backward. The main slider 34 moves from point G in FIG.
The position at which the motor 7 is retracted to the point but stops the motor 7 is detected in step S7. The timing is switch SW5
Is detected in step S8, the process proceeds to step S8, the first motor 7 is stopped, and the process proceeds to step S9.

In step S9, the loading slider 9 is moved forward by the second motor 50, and the carrier 20 at the reproducing position is stored in the stocker 21. In addition,
The fact that the carrier 20 has been sent to the storage position of the stocker 21 is detected by the switch SW8 and the second motor 50 is detected.
Is stopped. Next, in step S10, the main slider 34 is moved to the point G shown in FIG. G
In the point, as shown in FIG.
6 has come up.

Therefore, in step S11, it is determined whether or not the disk position detecting member 26 is raised by the switch S.
The determination is made by checking whether W10 is on. If the switch SW10 is on, this routine ends. If the switch SW10 is not turned on, the disc position detecting member 26 is prevented from being lifted by the displacement of the disc. Therefore, the process proceeds to step S12, and the stocker 21 is moved so that the carrier returned from the reproduction position is adjusted to the ejection position. Lower by one step. That is, the second motor 50 is rotated in a direction to lower the stocker 21 until the switch SW6 is turned on and off once.

Next, in step S13, the first motor 7 is driven in a direction for moving the main slider 34 forward until the tray is opened. In the tray open state, the rear end of the slider tray 31 is connected to the switch SW3.
And is detected when the switch SW3 is turned off. This routine ends in this state.

As described above, if the disc on the carrier is displaced when the carrier 20 is returned to the stocker 21 from the reproduction position and the disc position detecting member 26 is prevented from rising, the carrier is discharged out of the housing. Therefore, the user can set the disk correctly and operate the tray close key to close the slider tray 31.

[0096]

According to the recording medium reproducing apparatus of the present invention,
After the recording medium is returned to the stocker, when the switch for detecting the storage deviation of the recording medium detects the storage deviation of the recording medium, the recording medium returned to the stocker is transported to the outside of the apparatus and the position of the recording medium is moved. The displacement can be corrected, and a trouble due to the displacement of the recording medium can be prevented.

Further, a recording medium position detecting member configured to operate a switch for detecting a displacement of storage of the recording medium in the stocker and to be operated when the transfer means does not put the recording medium into and out of the stocker is provided. In the case where the switch is not operated when the recording medium position detecting member is operated, the recording medium is transported to the outside of the apparatus to correct the position deviation of the recording medium, thereby preventing a trouble due to the position deviation of the recording medium. it can.

[Brief description of the drawings]

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

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

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

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

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

FIG. 6 is a plan view showing a part of a disk reproducing apparatus according to an embodiment of the present invention.

FIG. 7 is a schematic side view showing a part of a disk reproducing apparatus according to an embodiment of the present invention.

FIG. 8 is a side view showing a part of the disk 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 configuration diagram schematically showing a disk reproducing apparatus according to an embodiment of the present invention.

FIG. 11 is a block diagram showing a control unit of the disk reproducing apparatus according to the embodiment of the present invention.

FIG. 12 is a chart showing the operation of the disc reproducing apparatus according to the embodiment of the present invention;

FIG. 13 is a chart showing the operation of the disc reproducing apparatus according to the embodiment of the present invention.

FIG. 14 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
Projection, 9d Inclined groove 10 Clamper 11 Switch operating rod 12 Switch board 13 Switch operating slider, 13a projection 20 Carrier 20a, 20b Hook engagement notch,
20c hole 20d recess, 20e recess for large diameter disc, 20f
Recess for small-diameter disc 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 lifting slider, 25a rack, 25b
Groove, 25c Stepped groove, 25d hole 26 Disk position detecting member, 26a, 26b Rod protrusion 27 Compression coil spring 28 Switch operation arm, 28a hole, 28b protrusion 29 Switch operation arm, 29a axis, 29b protrusion 31 Slider tray, 31a J-shaped Groove, 31b Projection 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 extracting 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 member 56, 57 Gear 58 Arm 59 Disk position detection member operation slider, 59a Projection, 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 teeth, 65b cam, 65c
Shaft 66, 67 Lever 68 Tension coil spring 69 Elevating 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 to SW10 Switch

Claims (1)

(57) [Claims] 1. A stocker capable of accommodating a recording medium, reproducing means for reproducing the recording medium, transport means for transporting the recording medium between the inside of the stocker and outside the apparatus or a reproducing position, the stocker and the transport Positioning means for relatively positioning the height with respect to the means, a switch for detecting the displacement of the storage of the recording medium in the stocker, and inserting the central hole of the recording medium in the stocker to operate the switch. A recording medium position detecting member configured to be operated when the transfer unit does not move the recording medium into and out of the stocker, and when the switch is not operated by the recording medium position detecting member, And a recording medium reproducing apparatus for transferring a recording medium out of the apparatus.