JP3354359B2 - Recording medium playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium reproducing apparatus provided with a recording medium exchanging apparatus. The present invention relates to a recording medium reproducing apparatus capable of reliably positioning the recording medium.

[0002]

2. Description of the Related Art FIG. 24 shows an example of a disk reproducing apparatus disclosed in Japanese Patent Application Laid-Open No. 4-38673 as a recording medium reproducing apparatus having a conventional recording medium exchange apparatus. The stocker shown in the figure contains a plurality of carriers on which disks can be placed, and is moved up and down by the stocker moving means so as to match the height of an arbitrary carrier to be pulled out to a tray. That is, the stocker is configured to be moved by the number of shelves that store the carriers.

The tray is moved between a load position shown in FIGS. 24A and 24B and an eject position shown in FIG. As shown in FIG. 24A, a carrier on which an arbitrary disc is placed is pulled out onto a tray at a loading position, and further, as shown in FIG. Done.

FIG. 24A shows a tray on which a carrier is placed.
When moving from the state shown in FIG. 24 to the position shown in FIG.
The carrier on the tray is exposed outside the housing, and the disc on the carrier can be replaced or a new disc can be placed on the carrier. Fig. 2 shows the tray on which the carrier is placed.
The state shown in FIG. 4 (c) is moved to the position shown in FIG. 24 (a), and the carrier on the tray is returned to the stocker, thereby exchanging a disk or inserting a disk into the apparatus. This disc player is advantageous in that it does not use the disc magazine used in the conventional disc player with changer. Incidentally, the disc magazine is expensive, and if it is left detached from the apparatus, it takes time to find it, which is inconvenient to use.

[0005] However, Japanese Patent Application Laid-Open No. Hei 4-38673 discloses the above.
In the disc reproducing apparatus disclosed in the above publication, there is only one means for pulling out the carrier from the stocker, so that there is a disadvantage that the disc in the stocker cannot be replaced while the carrier is being reproduced at the position of the reproducing means.

In addition, when the stocker moving means moves the stocker so as to match the tray drawer height, the stocker moving means moves upward and downward under the influence of gravity in order to move and position vertically. There is a difference in the stop position when moving in the downward direction. In other words, the stocker is stopped after the target position is detected, but there are differences in the detection positions depending on the respective moving directions. There was a problem that can not be decided.

On the other hand, in the conventional disk reproducing apparatus shown in FIG. 25, the disks are arranged vertically in the horizontal direction, and the reproducing means is moved in the horizontal direction to adjust the position of the disk.
Reproduction means include a turntable, a pickup,
Clamping means and the like are provided. In such a type of disc changer, it is required to quickly move the reproducing means moved for positioning. However, if the reproducing means is moved and positioned at a high speed in both directions, positioning may be performed in a state in which the reproducing means passes through the disk to be reproduced. Therefore,
Even with such a disk reproducing apparatus, there is a fear that the target disk cannot be reproduced.

The conventional disk reproducing apparatus shown in FIG.
The reproducing means is fixed, and the disk accommodating portion which accommodates the disks arranged vertically is moved in the horizontal direction in order to align the disk to be reproduced with the position of the reproducing means. Such a disk reproducing apparatus also has the same drawbacks as the disk reproducing apparatus described with reference to FIG.

[0009]

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 make it possible to exchange a recording medium in a storage unit even during reproduction of the recording medium. Another object of the present invention is to provide a recording medium reproducing apparatus capable of reliably performing positioning for selecting a disk.

[0010]

According to the present invention, there is provided a recording medium reproducing apparatus comprising: an accommodating portion capable of accommodating a plurality of recording media; reproducing means for reproducing the recording medium; First transfer means for transferring the recording medium between the storage section and the reproduction position, and recording medium in the storage section and the first or second transfer means. Positioning means for relatively positioning the means, positioning driving means for driving the positioning means to a target position, and control means,

When the positioning means is moved in one direction in the direction of gravity, the control means moves the positioning means until it exceeds the target position, and then moves the positioning means in a direction opposite to the moving direction. It is configured to move and position the target position, and to stop the positioning means at the target position without exceeding the target position when moving the positioning means in the direction opposite to the one direction. is there.

[0012]

According to the recording medium reproducing apparatus of the present invention, even when the second transport means is transported from the storage section to the recording medium reproducing means and the recording medium is being reproduced, the arbitrary recording medium can be read by the positioning means. The recording medium can be exchanged by transferring the recording medium out of the housing in accordance with the position of the first transfer means.

When positioning the housing and the first and second transfer means, the control means moves the positioning means until the position exceeds the target position, and then positions the positioning means in a direction opposite to the moving direction. It is configured to move the means to position the target position.

When moving the positioning means in one direction in the direction of gravity, the control means moves the positioning means until it exceeds a target position, and then moves the positioning means in a direction opposite to the moving direction. Then, when the target position is positioned and the positioning means is moved in the direction opposite to the one direction, the positioning means can be stopped at the target position without exceeding the target position.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording medium reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. First, an outline of the recording medium reproducing apparatus of the embodiment will be described with reference to FIG. Of course, various recording media can be used. In the following embodiment, an example will be described in which a compact disk (hereinafter simply referred to as a disk) is used as a recording medium. Each shelf of the storage unit 21 arranged in the housing (six stages in the embodiment)
Accommodates a disk. The first transfer means moves the disk between the inside of the storage unit 21 and a position outside the housing, and
The transfer means moves the disc between the storage section 21 and the reproduction means. The first and second transfer means are not driven up and down.

The storage section 21 is moved up and down to adjust an arbitrary disk to the draw-out height of the first or second transfer means. As shown in FIG. 20A, the first transfer means is the second transfer means.
Is disposed one stage lower in the storage section 21 than the transfer means. FIG. 20B shows a state where the storage unit 21 has been moved to the lowermost position. At this time, the first transfer means is engaged with the uppermost disk, and the second transfer means is located at a position corresponding to the upper space of the storage section 21. FIG. 20 (c)
Indicates a state in which the storage unit 21 has been moved to the uppermost position. At this time, the second transfer means is engaged with the lowermost disk, and the first transfer means is located at a position corresponding to the lower space of the storage section 21. As described above, the storage unit 21 has six shelves for storing disks, and is driven by a stroke corresponding to seven stages of disks.

The reproducing means is driven vertically. When the disk is transferred to the playback position by the second transfer means, the playback means rises and clamps the disk between the turntable and the clamper. Then, the disk is driven to rotate to be in a reproducing state.

In order to confirm that the disk in the storage section 21 is at the proper position, a disk position detecting member 26 is provided so as to be able to move up and down so as to pass through the center hole of the disk in the storage section 21. The disk position detecting member 2
6 rises due to the elasticity of the spring. The up / down stroke of the disk position detecting member 26 is equivalent to two steps of the disk. When the disk position detecting member 26 is lowered, the disk transferred by the first or second transfer means does not interfere with the disk position detecting member 26. . After the disk is transferred into the storage section 21 by the first or second transfer means, the disk position detecting member 26 is raised. The disc through which the disc position detecting member 26 is not inserted is inserted into a member fixed above the disc position detecting member 26.

The second motor drives the second transfer means and the storage section moving means, the first motor drives the first transfer means and the disk clamp means of the disk reproduction means, and further, the second motor Is switched between the second transfer means and the storage section moving means.

Since the first transfer means pulls out the disk from the storage section 21 on the opposite side of the disk reproduction means, the disk exchange in the storage section 21 can be performed regardless of whether the disk reproduction means holds the disk or not. Alternatively, a disk can be added to the storage section 21.

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. In FIG. 1, the positive direction of the X axis, the positive direction of the Y axis, and the positive direction of the Z axis are referred to as the backward direction, the right direction, and the upward direction, respectively, in the following description. The posture of each component in FIGS. 2 to 4 is not changed in relation to that of FIG.

The main chassis 1 shown in FIG. 1 supports all the components shown in FIGS. The right side chassis 2 is fastened to the right side of the main chassis 1. The gear train support member 3 and the guide plate 4 are fastened to the right side chassis 2. The first motor 7 is fastened to the gear train support member 3. The gear train support member 3 supports a transmission mechanism including a belt and an idler gear. The transmission mechanism is the first
Of the motor 7 is transmitted to the gear 8 supported by the gear train supporting member 3. The clamper support member 5 is fastened to the rear upper surface of the main chassis 1 and holds the clamper 10 rotatably. FIG. 2 shows the left inner wall of the clamper support member 5.
A guide groove 5a for transferring the carrier 20 shown in FIG. The switches SW2 and SW4 to SW9 are mounted on the switch board 12, and are fixed to the bottom surface of the main chassis 1.

The stocker cover 6 is connected to the stocker 2 shown in FIG.
1 is fastened to the upper surface on the front side of the main chassis 1 so as to cover the upper part of the main chassis 1. The positional relationship between the stocker cover 6 and the stocker 21 is shown in detail in FIGS. FIG. 5 is a cross-sectional view showing a state where all the carriers 20 are stored in the stocker 21, and FIG. 6 is a cross-sectional view showing a state where the carrier 20 is partially pulled out from the stocker 21. As shown in the figure, the switch operating rod 11 is supported by a cylindrical portion 6a extending downward at the center of the stocker cover 6 so as to be vertically movable. The switch SW10 is fixed to the stocker cover 6 so as to face the switch operating rod 11 via the substrate.

At the right front of the stocker cover 6, a locking bar 6b is located at a position corresponding to the hole 21c of the stocker 21 shown in FIG.
Is provided. The height of the lower end of the locking rod 6b is substantially the same as the height of the lower end of the cylindrical portion 6a. A stopper 6c is provided at a lower front part of the stocker cover 6. Further, a light receiving element 74 is provided on the stocker cover 6.
Are attached via the substrate. A light emitting element 73 that emits light toward the light receiving element 74 is attached to the main chassis 1 via a substrate.

As shown in detail in FIG. 14C, the loading slider 9 is engaged with the guide plate 4 and is slidably supported by the guide plate 4 in the front-rear direction. On the lower left side of the loading slider 9, a rack 9a is provided which meshes with the external teeth 52a of the internal gear 52 shown in FIGS. The rack 9a meshes with the internal gear 52, and the loading slider 9 is driven in the front-rear direction by the rotation of the internal gear 52. As shown in FIG. 14A, the protrusions 13a of the switch operation slider 13 are engaged with the elongated holes 1s, 1s of the main chassis 1, and the switch operation slider 13 is movable to the left and right in the main chassis 1. Supported.

As shown in detail in FIGS. 14 (a), 14 (d), 14 (b) and 14 (e), the projection 13a provided on the switch operation slider 13 comes into contact with the projections 9b and 9c of the loading slider 9. FIG. 14 (a) and FIG. 14 (d)
When the loading slider 9 moves to the front, that is, the carrier storage position, as shown in FIG.
The protrusion 9b pushes the switch operation slider 13 to the left through the projection 13a to operate the switch SW8. As shown in FIGS. 14B and 14E, when the loading slider 9 moves rearward, that is, to the loading position, the projection 9c of the loading slider 9 moves the switch operating slider 13 rightward through the convex portion 13a. Activate the push switch SW7. When the projection 9b or 9c of the loading slider 9 does not press the projection 13a of the switch operating slider 13, the switch operating slider 13 is pushed by the switches SW7 and SW8 and is at the intermediate position.

In the carrier 20 shown in FIG. 2, the disk can be positioned and mounted by the concave portion 20e for the large diameter disk or the concave portion 20f for the small diameter disk. Carrier 2
A hole 20c is formed outside the 0 large-diameter disk recess 20e. The hole 20c is formed at a position corresponding to the hole 21c of the stocker 21 when the carrier 20 is stored in the stocker 21. Therefore, the above-described locking bar 6b of the stocker cover 6 is inserted into the hole 20c of the carrier 20 via the hole 21c of the stocker 21. The stocker 21 supports the carrier 20 by grooves 21a, 21a,... Provided in the inner wall, and accommodates six carriers 20. As described above, the stocker 21 is provided with the hole 21c at a position corresponding to the hole 20c of the carrier 20 in the stocker 21. Further, a hole 20h is provided in a part of the small diameter disc recess 20f in the carrier 20. As described later, the hole 20h is for allowing the light flux from the light emitting element 73 to pass when the carrier 20 moves from the outside of the housing to the inside of the stocker 21.

The leaf spring 24 fixed to the stocker 21 shown in FIG. 2 is engaged with the recess 20g of the carrier 20 to lightly position the carrier 20. The first hook engagement notch 20b of the carrier 20 is engaged with the first hook 36a of the carrier extracting member 36 shown in FIG. Therefore, the carrier 20 can be moved between the stocker 21 and the outside of the housing by the carrier drawer member 36.

The second hook engaging notch 20a of the carrier 20 is engaged with the second hook 40a of the loading hook 40 shown in FIG. 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, a front plate 22 and a rear plate 23 are fastened to the lower side of the stocker 21. Front plate 22
Are provided with shafts 22a, 22a. Rear plate 2
3, a shaft 23a is provided upright, and a tongue piece 23b is further provided.

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 the shafts 1r, 1r 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 elevating slider 25 is provided with a step-like groove 25c having seven horizontal portions, a rack 25a.

Rack 25a of stocker elevating slider 25
Are engaged with the gear 56 shown in FIGS. The shafts 22a, 22a of the front plate 22 and the rear plate 23
Is inserted through the step-like grooves 25c. That is, the rotation of the gear 56 moves the stocker elevating slider 25 to move the stocker 21 up and down. The storage unit moving means is constituted by the stocker elevating slider 25 and its driving mechanism.

When the stocker 21 is at the home position, which is the lowest position, the tongue piece 23b is set to the switch S.
Activate W2. At this time, the carrier 20 on the upper shelf of the stocker 21 comes to a position where it is pulled out of the housing by the carrier drawer member 36. Then, whether or not the carrier 20 is present at a position corresponding to the carrier withdrawing member 36 (in this case, the upper shelf of the stocker) can be detected by a switch SW9 described later. At this time, the loading hook 40 is located in the space above the upper shelf.

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. The switch operating arm 28 is pushed by the switch SW6 and is urged in the counterclockwise direction. Projection 2 of switch operation arm 28
8b are holes 25d of the stocker elevating slider 25, 25d,.
When the stocker elevating slider 25 moves, the projection 28b is moved to the hole 25d every time the hole 25d passes.
The switch operation arm 28 swings into d. The switch SW6 is turned on and off every 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 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 when the stocker 21 is lowered, the switch S
The control circuit can store the position of the stocker 21 by counting down the position of the stocker each time W6 is turned on and off.

The stocker can be raised from the home position by the height of seven shelves. When the stocker is at the highest position, the lowermost shelf is at the position where the carrier is moved in and out by the loading hook 40. . That is, the carrier drawer member 36 is located in the space below the lower shelf. As described above, the stepped groove of the stocker raising / lowering slider 25 is set so that the stocker is temporarily stopped when the shelf of each step of the stocker has a height corresponding to the loading hook 40 and the carrier pull-out member 36. 25c is provided with seven horizontal portions.

The disk position detecting member 26 is a rod-like projection 26.
a and 26b, and the bar-shaped projections 26a and 26b
The inside of 6b is a hollow part opened to the lower surface. FIG.
Are engaged with the hollow portions of the bar-like projections 26a and 26b, and the disk position detecting member 26 is vertically movable.

A 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. A recess 58a formed at the tip of the arm 58 shown in FIG. 4 locks the base end of the bar-like projection 26a of the disc position detecting member 26. The arm 58 moves the disk position detecting member 26 up and down. FIG. 5 shows a state where the disk position detecting member 26 has risen, and FIG. 6 shows a state where the disk position detecting member 26 has fallen.

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.

The switch operating arm 29 shown in FIGS. 2, 5 and 6 is rotatably supported by a center boss 1h slightly to the right of the bottom of the main chassis 1 via a shaft 29a, and has a lower rear end thereof. Is in contact with the switch SW9 and is urged by 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 or returned from the stocker, and turns on and off the switch SW9. The switch SW9 detects that the carrier 20 has been returned into the stocker 21 by the carrier drawer member 36. Further, the switch SW9 detects the presence or absence of the carrier at the stage pulled out by the carrier pullout member 36.

The switch holding member 38 shown in FIG. 3 is tightened so that the U-shaped convex portion 38b formed on the lower surface thereof fits into the U-shaped concave portion 2d in front of the right side chassis 2 shown in FIG. Is being worn. The slider tray 31 is supported by the main chassis 1 and the switch holding member 38 so as to be movable in the front-rear direction. That is, the projection 38a of the switch holding member 38 engages with the groove 31d provided on the right side of the slider tray 31, and the projection 1j on the left side of the main chassis 1 is provided on the left side of the slider tray 31. With the groove 31e.

The positional relationship between the slider tray 31 and the stocker 21 is shown in FIGS. FIG. 7 shows a state in which the carrier 20 is returned to the stocker 21 by the slider tray 31, and FIG. 8 shows a state in which the carrier 20 is drawn out of the housing. As shown in the figure, the slider tray 31 is formed and arranged so as to sandwich the stocker 21 from the left and right.
1e and 31d can be formed. Therefore, the main slider 34 and the carrier pull-out member 36 can be stably supported in a slidable manner in the front-rear direction. Moreover, since the slider tray 31 is configured to surround the stocker 21 when the slider tray 31 is stored in the housing, the stroke of the slider tray 31 can be increased in a small space, and the carrier 2
0 can be drawn a long distance.

The operation piece of the switch SW3 fastened to the switch holding member 38 is used when the slider tray 31 is stored in the housing as shown in FIG. During the movement stroke), the slider tray 31 is pressed against the right side surface. As shown in FIG. 8, 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
Becomes opposed to the operating piece of the switch SW3, and the pressing of the operating piece is released. That is, the switch SW3 detects the open position of the slider tray 31.

The guide plate 33 shown in FIG. 3 is fastened to the lower surface of the slider tray 31. Guide plate 3
The slider 3 and the slider tray 31 support these members so as to be movable in the front-rear direction so as to sandwich the main slider 34 and the carrier pull-out member 36.

A rack 34a is provided on the lower surface of the main slider 34 in the front-rear direction. The rack 34a meshes with the gear 8 shown in FIG. Therefore, the main slider 34
Is moved in the front-rear direction by the forward and reverse rotation of the first motor 7. The main slider 34 is the slider tray 31
Then, the carrier drawer member 36 is moved, and the gear 62 shown in FIGS. 4, 7 and 8 is rotated.

That is, by moving the main slider 34 backward, the slider tray 31 can be pulled into the housing. Then, even after the slider tray 31 is drawn into the housing, the slider tray 31 can be further moved rearward. Then, the main slider 34 further moved backward rotates the gear 62 shown in FIGS. 4, 7 and 8.

The carrier pull-out member 36 shown in FIGS. 3 and 9 to 11 rotatably supports a rotating member 37,
The shaft 37a of the rotating member 37 is engaged with the J-shaped groove 31a of the slider tray 31. The shaft 37a of the rotating member 37 can also engage with the recess 34c of the main slider 34. Slider tray 3 shown in FIG. 3 and FIGS.
Numeral 1 supports the rotating member 35 so as to be freely rotatable. The shaft 35a of the rotating member 35 is engaged with the J-shaped groove 2a of the right side chassis 2 shown in FIG.
And can be engaged.

FIGS. 9 to 11 are diagrams showing changes in the relative positional relationship between the main slider 34, the slider tray 31, and the carrier pull-out member 36. FIG. As shown in FIG. 9, when the main slider 34 is moving backward, the shaft 37a
Engages with the right protrusion of the J-shaped groove 31a and does not engage with the recess 34c, so that the main slider 34 does not drive the carrier pull-out member 36. At this time, the main slider 34 does not drive the slider tray 31 because the shaft 35a is engaged with the right protrusion of the J-shaped groove 2a and is not engaged with the recess 34d. That is, in the state shown in FIG. 9, even if the main slider 34 moves, the carrier pull-out member 36 and the main slider 34 are not moved.

When the main slider 34 moves forward to the position shown in FIG. 10, the recess 34c retracts the shaft 37a, and the shaft 37a engages with the linear portion of the J-shaped groove 31a. Driven. At this time, the main slider 34 has not been moved yet.

When the main slider 34 moves forward to the position shown in FIG. 11, the recess 34d retracts the shaft 35a, the shaft 35a comes into engagement with the linear portion of the J-shaped groove 2a, and the slider tray 31 is driven. Is done. When the main slider 34 moves forward, first, the carrier drawer 3
6 is moved forward, and then the slider tray 31 is moved forward together with the carrier pull-out member 36.

When the carrier pullout member 36 moves forward, the carrier 20 in the stocker 21 is pulled forward,
The tip is placed on tongue pieces 32a, 32a of lower plate 32 fastened to slider tray 31. FIG. 6 shows a state in which the carrier 20 is placed on the tongue pieces 32a, 32a of the lower plate 32. As shown in FIG. 6, when the carrier 20 is pulled out from the stocker 21 to the outside of the housing, the distance C between the disc on the carrier 20 and the stopper 6c of the stocker cover 6 is equal to the thickness of the disc. It is configured to be smaller.

When the slider tray 31 is housed in the housing, the tongues 32a, 32a fit into the recesses 1f, 1f provided on the frame upper surface 1e 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.

The shaft 61 shown in FIG. 4 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 support member 39 shown in FIG. Have been. The shaft 61 has the cam gear 63 and the gear 6
2 is rotatably supported. Projection 63 of cam gear 63
a is fitted into the recess 62b of the gear 62,
3 and the gear 62 rotate integrally. The gear 62 is rotated by the main slider 34 as described above.

FIG. 7 shows a state where the main slider 34 starts rotating the gear 62. When the main slider 34 moves rearward, the rear end pushes the projection 62a of the gear 62, and the gear 62 rotates. Then, the gear 62 comes into mesh with the rack 34b of the main slider 34.
The positional relationship between 2 and the main slider 34 is constant, and the meshing state is smoothly achieved.

The support member 39 shown in FIG. 3 is fastened so that the holes 39c and 39d are fitted to the shafts 2b and 2c of the right side chassis 2. On the left side surface of the support member 39, a guide groove 5a for guiding the carrier when the carrier 20 is transferred is provided together with the guide groove 5a of the clamper holding member 5 described above with reference to FIG. Rotating member 4
1 is rotatably supported by the loading hook 40. The shaft 41a of the rotating member 41 is connected to the L-shaped groove 3 of the supporting member 39.
9a. The shaft 41b is engaged with the inclined groove 9d of the loading slider 9 shown in FIG. Thus, the loading hook 40 is supported by the support member 39 and the loading slider 9 so as to be movable in the front-rear direction. FIG. 12 shows an assembled state of the supporting member 39, the loading slider 9, the loading hook 40, and the rotating member 41.

FIG. 13 shows a state where the loading slider 9 drives the loading hook 40. FIG. 13 (a)
Indicates the middle of the driving of the loading hook 40. At this time, the shaft 41a (in a portion hidden by the shaft 41b) is L
The rotating member 41 does not rotate, and the loading hook 40 moves integrally with the loading slider 9 because it is engaged with the horizontal portion of the groove 39a.

FIG. 13B shows a state where the shaft 41a is engaged with the rear end of the horizontal portion of the L-shaped groove 39a, and FIG. 13C shows a state where the loading slider 9 has moved to the end of the movement stroke. While the loading slider 9 moves from the position shown in FIG. 13B to the position shown in FIG. 13C, the rotating member 41 rotates, the loading hook 40 hardly moves, and the loading slider 9 bounces. Thus, even when the moving position varies, the stopping position of the loading hook 40 is stabilized.

As described above, the second carrier 20
Since the hook engaging notch 20a is engaged with the second hook 40a of the loading hook 40, when the loading hook 40 moves rearward, the carrier 20 in the stocker 21 is pulled out by the loading hook 40. The guide groove 5a of the clamper support member 5 and the guide groove 39b of the support member 39 described above with reference to FIGS. 1 and 3 directly guide the turntable 70a shown in FIGS. Transferred to loading position. 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.

As described above, the carrier 20 is moved between the inside of the stocker 21 and the turntable 70a by the movement of the loading slider 9, and the moving end of the loading slider 9 is switched by the switch SW7 as described earlier with reference to FIG. And SW8. The carrier extracting member 36 and the loading hook 40 both extract the carrier 20 from the stocker 21, but they are shifted in height by one step of the carrier as shown in FIGS. 20 and 6 and do not pull the carrier 20 against each other. .

The driving gear 51, the internal gear 52 and the carrier gear 54 shown in FIGS. 4 and 15 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 holding member 55 is fastened so that its hole 55a corresponds to the hole 1k of the main chassis 1. Planet gears 53 rotatably supported on the shaft of a carrier gear 54
Meshes with the internal gear 52b of the internal gear 52 and the sun gear 51b formed on the driving gear 51. These gears constitute a planetary gear mechanism.

The second motor 50 is fixed to a boss 1m of the main chassis 1 shown in FIG. Second motor 5
The second motor 50 drives the driving gear 51 to rotate because the speed reduction mechanism driven by 0 is engaged with the large gear 51 a of the driving gear 51. 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 (shown in FIG. 15) as described above, and drive the loading slider 9. The carrier gear 54 is connected to the rack 25a of the stocker lifting 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 lifting slider 25.

The slider 59 shown in FIGS. 4 and 16 to 18 has a holding member 5 through a plurality of elongated holes extending in the front-rear direction.
5, is slidably supported in the front-rear direction, and is urged forward by a tension coil spring 72. The slider 59 has a cam follower portion 59b provided on the slider 59 engaged with a projection 63a of the cam gear 63, and is driven by the cam gear 63 in the front-rear direction. Then, a cam-shaped projection 59a provided on the lower surface engages with the edge of the arm 58 rotatably supported by the holding member 55, and rotates the arm 58 as shown in FIGS.

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.

The disc position detecting member 26 is formed so as to have a lifting stroke corresponding to the carrier 20 locked by the carrier pull-out 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 operation rod 11 to operate the switch SW10, and the rod-shaped projection 26b comes into contact with the locking rod 6b on the back surface of the stocker cover.

On the other hand, the stocker 21 is raised, and the carrier 20 is located above the loading hook 40.
There are situations where there is. In this case, due to the up / down stroke of the disc position detecting member 26, a bar-like projection 26a is formed in the center hole of the disc above the loading hook 40.
Is not inserted, and the rod-shaped protrusion 2
6b will not be inserted. However, in such a situation, as shown in FIG. 5, the cylindrical portion 6a is provided in the center hole of the disk above the loading hook 40, and the locking bar 6 on the back surface of the stocker cover is provided in the hole 20c of the carrier 20.
b will be inserted respectively. Therefore, regardless of the position of the stocker 21, the disc position detecting member 2
When the vibration is applied when the carrier 6 is rising, the carrier 2
0 and the disc mounted on the carrier do not shift.

As shown in FIG. 6, when the disc 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 and the loading hook 40. In addition,
When the disc position detecting member 26 is lowered, even if vibration or the like is applied to the apparatus, the carrier pull-out 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. 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. Therefore, Stocker 2
When raising / lowering 1, it is possible to prevent the loading hook 40 or the carrier pull-out member 36 from coming into contact with the carrier 20.

The brake member 60 shown in FIGS. 4 and 16 to 18 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 the cam follower portion 60a provided thereon is provided with a cam gear. The cam gear 63 is engaged with the cam 63 b and driven by the cam gear 63 in the front-rear direction. The protrusion 60b provided on the brake member 60
Locks the carrier gear 54, and the projection 60c is the internal gear 5
Lock 2

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 the brake member 60. That is, the main slider 34 switches the power transmission destination of the second motor 50. Power switching means is constituted by the brake member 60, its driving mechanism, and the planetary gear mechanism.

The cam gear 63 shown in FIGS. 4 and 16 to 18 meshes with a gear 64 rotatably supported on the rear right side of the main chassis 1. Rotating member 6 supported by
5 is meshed with the teeth 65a. Rotating member 65
Shaft 65c is engaged with a J-shaped groove 71a of a slider 71 slidably supported at the rear portion of the main chassis 1. J
The radius of the arc portion of the shape groove 71a matches the rotation radius of the shaft 65c, and the slider 71 moves or stops while the rotating 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 lever 6 shown in FIG. 4 and FIGS.
Reference numerals 6 and 67 denote positions close to the rotating member 65. The respective holes 66a and 67a are fitted to the shaft of the main chassis 1 and are rotatably supported by the main chassis 1. The end is pressed against the cam 65b of the rotating member 65. The tips of the levers 66 and 67 abut the switches SW4 and SW5, respectively.

The levers 66 and 67 swing about the axis fitted with the holes 66a and 67a in accordance with the rotation of the rotating member 65. 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.

FIG. 16 shows that the cam gear 63 has the main slider 3.
4 shows a state before being rotated. At this time, the disc position detecting member 26 is lowered, and the internal gear 52 is locked to the brake member 60. Further, the turntable 70a is raised. Then, the switches SW4 and SW5 are off.

FIG. 17 shows that the cam gear 63 has the main slider 3.
Reference numeral 4 denotes a state in which the rotation has been made halfway. At this time, the disc position detecting member 26 is raised, and the internal gear 52 is locked to the brake member 60. Further, the turntable 70a is raised. And the switch S
W4 is on and switch SW5 is off.

FIG. 18 shows that the cam gear 63 has the main slider 3.
4 shows a state in which the lens is rotated to the maximum rotation angle.
At this time, the disc position detecting member 26 is lowered, and the carrier gear 54 is locked to the brake member 60.
Further, the turntable 70a is lowered. And
The switch SW4 is off and the switch SW5 is on.

The chart in FIG. 19 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. 8B and 8C 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. 9F 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 elevating and lowering 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. 21 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.

The device is controlled by a control circuit in accordance with the operation of each of the switches SW1 to SW10 and the operation of keys (not shown) provided on the front panel of the housing. In the initial state, as shown in FIG.
And the loading hooks 40 are locked with the carriers 20, 20 in the stocker 21. 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 an up state. The stocker 21 is located at the lowest position. Further, the brake member 60 is moved rearward as shown in FIG. 16, and the projection 60c meshes with the internal gear 52 to stop it. (At this time, the switches SW2 and SW
4 and SW8 are on, and switches SW5 and SW7 are off. Therefore, the second motor 50 can rotate only the carrier gear 54. Accordingly, the stocker lifting slider 25 is moved by the second motor, and the stocker 21 shown in FIGS. 2, 5 and 6 is raised and lowered.

In this state, the stocker 21 is raised and lowered,
The disc to be reproduced can be selected by adjusting the height of the carrier of the disc to be reproduced 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. Further, the height of the carrier 20 for exchanging disks can be adjusted to the carrier drawer member 36.

First, disk replacement 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 off.) That is, as described above, when the main slider 34 is at the position shown in FIG. 7, the turntable 70a is in a state of being raised. 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. 7, 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 drawer 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 rotating member 37 shown in FIG. 10 is guided by the recess 34c of the main slider 34 and rotates, and the shaft 37a of the rotating member 37 enters the linear portion of the J-shaped groove 31a and the carrier is moved. The drawer member 36 is driven forward. The carrier 20 is sent and the front end is the lower plate 3.
The slider tray 31 is placed on the tongue pieces 32a
Supported by

When the main slider 34 moves further,
As shown in FIG. 11, the recess 34d of the main slider 34
Engages with the shaft 35a to rotate the rotating member 35 counterclockwise. Then, the shaft 35a engages with the portion of the J-shaped groove 2a extending in the moving direction of the slider tray 31, and the shaft 35a
1 becomes movable, and the shaft 35a is pushed by the recess 34d, so that the slider tray 31 moves in the forward direction, that is, in the protruding direction from the housing.

That is, the slider tray 31 moves from the position shown in FIG. 7 to the position shown in FIG. At this time, the switch SW3 is turned off. In the state shown in FIG. 8, the slider tray 31 protrudes from the housing, and the carrier 20 is also drawn out by the carrier drawer 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.

The slider tray 31 retreats and the carrier 2
The presence / absence of a disk in the carrier 20 is detected based on a signal from the light receiving element 74 when “0” is stored in the stocker 21. Since the distance C shown in FIG. 6 is smaller than the thickness of the disk, it is possible to prevent two disks from being loaded on the carrier 20 and being pulled into the housing. 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. 7, after the stocker is raised and lowered and the carrier 20 of the disk 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 The gear 62 and the cam gear 63 are 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. This state is shown in FIG. While the cam gear 63 rotates from the point D to the point B in FIG. 19 (f), as shown in FIG. 19 (d), the disk position detecting member 26 once rises and then falls.

Then, the internal gear 52 is rotated by the second motor 50, and the loading slider 9 is sent backward. The carrier 20 is 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. 7). 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 by the motor 7 shown in FIG.
From the point to the point B (the main slider 34 is
Retreat from the position shown in. This state is detected when the switch SW5 is turned on. ) Then the second motor 5
0, the loading slider 9 is moved from the reproduction position to the position shown in FIG.
The carrier 20 is advanced to the position shown in FIG. This state is the initial state shown in FIG.

As described above, the reproduction of the disk or the exchange of the disk in the stocker is performed. 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. Then, after correcting the displacement of the disk, the slider tray 31 can be moved into the housing.

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 apparatus is stopped after the disk reproduction or disk exchange is completed, the disk position detecting member 2
6, the stocker 21 is lowered, and the disc position detecting member 26 is inserted through all the discs and carriers in the stocker. By doing this,
Even when a force is applied to the disk and the carrier in the stocker 21 by, for example, moving the apparatus, no displacement of the carrier or the disk occurs.

Next, the positioning operation of the stocker 21 will be described with reference to FIGS. FIG. 22A is a time chart when the stocker 21 is moved from the lowermost position to the uppermost position. When a positive voltage is applied to the second motor, the stocker 21 rises and a pulse is generated in the switch SW6. The circled numbers in the figure indicate the stocker 21
The height position is shown. When the stocker 21 is at the lowermost position, the switch SW2 outputs the L level. FIG. 22B is a time chart when the stocker 21 is moved from the uppermost position to the lowermost position. When a negative voltage is applied to the second motor, the stocker 21 descends, and a pulse is generated in the switch SW6. It should be noted that the circled numbers in the figure indicate the height position of the stocker 21 as in FIG. In this case, the switch SW2 operates immediately before the second motor stops.

FIG. 23 is a flowchart showing the positioning operation of the stocker 21. When the positioning operation routine is executed, first, in step S1, it is determined whether or not there is a request to change the current height of the stocker position, and if so, the process proceeds to step S2, and there is no request. In this case, the process moves to step S6. In step S2, it is determined whether or not the current stage is changed to the upper stage. If the current stage is changed to the upper stage, the process proceeds to step S3. If not, the process proceeds to step S7.

In step S3, the current stage is compared with the target stage, and the number of moving stages is set in the memory.
Move to In step S4, the second motor is driven in a direction to raise the stocker 21, and the process proceeds to step S5. In step S5, the number of moving stages and the number of pulses of the switch SW6 are compared to determine whether an H pulse of the target stage has been detected. If detected, the process proceeds to step S6, and if not detected, step S5 is repeated. Step S
During execution of 5, the pulse from the switch SW6 is being counted. In step S6, the second motor is stopped, and this routine ends.

In step S7, it is determined whether or not the current stage is changed to a lower stage. If the change is to a lower stage, the process proceeds to step S8. If not, the process proceeds to step S1. In step S8, the current stage is compared with the target stage, the number of moving stages is set in the memory, and the process proceeds to step S9. In step S9, the second motor is driven in a direction to lower the stocker 21, and the process proceeds to step S10. In step S10, it is determined whether or not the lowermost position detection switch SW2 is on (L).
Then, the process proceeds to step S12.

In step S12, the number of moving stages and the switch S
By comparing the number of pulses of W6, it is determined whether or not the target stage H pulse has been detected. If detected, the process proceeds to step S13, and if not detected, the process proceeds to step S10.
Note that the pulses from the switch SW6 are counted while executing Steps S10 and S12. In step S13, it is determined whether or not the target stage L pulse has been detected. If detected, the process proceeds to step S4, and if not detected, step S13 is repeated. That is, in S13, the position beyond the target position, specifically,
It detects between the carrier at the target position and the carrier immediately above the carrier at the target position. Step S11
Then, it is determined whether or not the H pulse of the switch SW6 has been detected. If the H pulse has been detected, the process proceeds to step S6, and if not, the step S11 is repeated.

As described above, when the stocker 21 is moved in the lowering direction, it is once moved until the target position is passed, and then the stocker 21 is raised and the switch SW is moved.
Since the stocker 21 is stopped by the H pulse of 6, the stocker 21 can be stopped at the same position as when the stocker 21 is raised. When the stocker 21 is stopped at the lowest position, the stocker 21 is always positioned in the lowered state, so that the stocker 21 can always be stopped at the same position without moving until the target position is passed.

Although the embodiment has been described with respect to the case where the positioning means is moved in the vertical direction, the effect of stopping and positioning while moving in one direction is the same in the case of horizontal movement. The present invention can be applied to the disk reproducing apparatus described with reference to FIGS.

[0111]

According to the recording medium reproducing apparatus of the present invention,
A plurality of recording media are stored in the device, and the recording media can be exchanged during reproduction. Further, since positioning for reproduction or replacement can be reliably performed, a recording medium reproducing apparatus that is very easy to use can be provided.

[Brief description of the drawings]

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

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

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

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

FIG. 5 is a sectional view showing a portion of a recording medium reproducing apparatus according to an embodiment of the present invention. The cut surface is stepped so as to pass through the centers of the stocker cover 6 and the disc position detecting member 26, respectively.

FIG. 6 is a sectional view showing another state of the portion shown in FIG. 5;

FIG. 7 is a plan view showing a portion of a recording medium reproducing apparatus according to an embodiment of the present invention.

FIG. 8 is a plan view showing another state of the portion shown in FIG. 7;

FIG. 9 is a plan view showing a recording medium reproducing apparatus according to an embodiment of the present invention, with a portion cut away.

FIG. 10 is a plan view showing another state of the portion shown in FIG. 9;

FIG. 11 is a plan view showing still another state of the portion shown in FIG. 9;

FIG. 12A is a plan view showing a part of a recording medium reproducing apparatus according to an embodiment of the present invention, and FIG. 12B is a side view showing the same part.

FIG. 13 is a partial side view showing the operation of the recording medium reproducing apparatus according to the embodiment of the present invention.

14 (a) and 14 (b) are partial plan views showing the operation of a recording medium reproducing apparatus according to an embodiment of the present invention, and FIG. 14 (c) is a cross-sectional view taken along the line CC in FIG. 14 (a). , FIG.
4 (d) is a detailed view of a portion D in FIG. 14 (a), and FIG.
(E) is a detailed view of a portion E in FIG. 14 (b).

FIG. 15 is a cross-sectional view of a recording medium reproducing apparatus according to an embodiment of the present invention, showing a gear meshing relationship by a cut surface connecting gear centers.

16A is a plan view showing a portion of a recording medium reproducing apparatus according to an embodiment of the present invention, and FIG. 16B is a view of the recording medium reproducing apparatus in a state shown in FIG. 16A. 16 (c) is a cross-sectional view taken along the line CC in FIG. 16 (b).

FIG. 17 is a diagram showing another state of the portion shown in FIG. 16;

FIG. 18 is a view showing still another state of the portion shown in FIG. 16;

FIG. 19 is a chart showing the operation of the recording medium reproducing apparatus according to the embodiment of the present invention.

20 (a) is a configuration diagram schematically showing a recording medium reproducing device according to an embodiment of the present invention, FIG. 20 (b) is a partial configuration diagram schematically showing the recording medium reproducing device, and FIG. c)
21B is a diagram showing another state of the portion shown in FIG.

FIG. 21 is a block diagram illustrating a control unit of a recording medium reproducing apparatus according to an embodiment of the present invention.

FIG. 22 is a time chart showing an operation of the recording medium reproducing apparatus according to the embodiment of the present invention.

FIG. 23 is a flowchart showing an operation of the recording medium reproducing apparatus according to the embodiment of the present invention.

FIG. 24 is a schematic configuration diagram showing a conventional example.

FIG. 25 is a schematic configuration diagram showing another example of the related art.

FIG. 26 is a schematic configuration diagram showing still another example of the related art.

[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, 6a cylindrical portion, 6b locking bar, 6c Stopper part 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 convex portion 20 Carrier 20a Second hook engaging notch, 20
b Notch of first hook engagement, 20c hole 20d recess, 20e recess for large diameter disc, 20f
Small-diameter disk recess 20g recess, 20h hole 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 first hook 37 rotating member, 37a shaft 38 switch holding member 39 support member, 39a L-shaped groove, 39b guide groove 40 loading hook, 40a second Hook 41 Rotating member, 41a, 41b Shaft 50 Second motor 51 Driving gear, 51a Large gear, 51b Sun gear 52 Internal gear, 52a External gear, 52b Internal gear 53 Planetary gear 54 Carrier gear 55 Holding member 56, 57 Gear 58 Arm 59 Slider, 59a Projection, 59b Cam follower 60 Brake member, 60a Cam follower 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 73 Light emitting element 74 Light receiving element SW2 to SW10 Switch

Claims (1)

(57) [Claims] An accommodating portion capable of accommodating a plurality of recording media;
Playback means for playing back a recording medium; first transfer means for transferring the recording medium between the inside of the housing portion and the outside of the housing;
Second transfer means for transferring the recording medium between the inside of the storage section and the reproduction position, positioning means for relatively positioning the recording medium in the storage section and the first or second transfer means, Positioning drive means for driving the positioning means to a target position; andcontrol means, wherein the control means, when moving the positioning means in one direction in the direction of gravity, the positioning means until the position exceeds the target position. Is moved, the positioning means is moved in a direction opposite to the moving direction to position the target position, and when the positioning means is moved in the direction opposite to the one direction, the position exceeds the target position. A recording medium reproducing apparatus characterized in that a positioning means is stopped at a target position without using a recording medium.