JP3438494B2 - Disc player with disc changer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus with a disc changer for accommodating a plurality of discs and selecting and reproducing any disc.

[0002]

2. Description of the Related Art Conventionally, there has been known a disc reproducing apparatus with a disc changer which accommodates a plurality of discs and selects and reproduces an arbitrary disc from the discs. JP-A-7-
The disk reproducing device proposed in Japanese Patent No. 302460 is
A structure in which multiple disc trays on which discs are placed are moved horizontally between the disc storage position, the disc playback position, and the disc replacement position, and the playback unit is moved up and down to match the position of the disc to be played. A motor for moving the disc, a motor for raising and lowering the disc tray moving means so as to match the height of the disc tray for moving, and a motor for raising and lowering the reproducing unit. That is, this device uses three motors for loading and exchanging the disc.

In the disk reproducing apparatus proposed by the applicant of the present application in Japanese Patent Application No. 7-61570, two motors are used for loading or replacing the disk, and the power of one of these motors is transmitted to the other motor. Switching the destination.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The disc reproducing apparatus proposed in Japanese Patent No. 02460 requires three motors for disc exchange and loading. If there are a large number of motors, the motors themselves are expensive, resulting in high cost, and there is a problem in that material costs for wiring and assembly work such as soldering are required. Further, there is a problem that it is difficult to reduce the size of the device because the space required for the motor and the speed reduction mechanism is large.

In the disk reproducing apparatus of Japanese Patent Application No. 7-61570, the number of motors used is small, but the power must be further transmitted to the power transmission switching mechanism itself, which complicates the mechanism and also requires two motors. There is a problem that the timing adjustment of the operation between the motors becomes complicated.

The present invention has been made in view of the above points, and an object of the present invention is to provide a disk reproducing apparatus with a disk changer which can reduce the number of motors used and reduce the manufacturing cost. .

Still another object of the present invention is to switch the power transmission destination only by the rotation direction of the motor,
It is an object of the present invention to provide a disc reproducing apparatus with a disc changer that can eliminate complications in assembling such as timing adjustment.

[0008]

DISCLOSURE OF THE INVENTION A disc reproducing apparatus with a disc changer according to the present invention comprises a plurality of disc trays on which discs are placed and arranged so as to be vertically stacked, and a disc tray fixed to the main body of the device. A guide for horizontally guiding, a first transfer means for horizontally transferring the disc tray between a first position, which is a disc storage position, and a second position outside the apparatus, and the disc tray from the first position to the first position. Second transfer means for horizontally transferring to a third position opposite to the second position, reproducing means for reproducing a disk on the disk tray at the third position, and raising and lowering the reproducing means for raising the height of an arbitrary disk tray. First positioning means for positioning the disk, clamping means for clamping the disk on the positioned playback means, and first and second transfer means. Second positioning means for positioning the disk tray at an arbitrary height of the disc tray, and the gear of the first driving means selectively meshes with the tray open / close rack of the first transferring means or the loading rack of the second transferring means. With a disc changer configured to drive the first transfer means, the second transfer means and the clamp means by the first drive means, and to drive the first positioning means and the second positioning means by the second drive means by fitting. In the disc player,

The tray open / close rack, the loading rack, and the starting rack are arranged so that they can mesh with the gears of the first drive means, and the gears mesh with only the starting rack in the initial state. The movement of the starting rack due to rotation in one direction causes the starting rack to bring the tray open / close rack into engagement with the gear, and the movement of the starting rack due to rotation of the gear in the other direction in the initial state causes the starting rack to load the loading rack. It is configured so as to be brought into a meshed state with the gear.

Further, in the disc reproducing apparatus with the disc changer, the clamping means is driven by a stroke after the loading rack drives the first transfer means.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus with a disk changer according to an embodiment of the present invention will be described with reference to the drawings. First, the outline of the configuration of the disc reproducing apparatus of the embodiment will be described with reference to FIG. The disc tray in FIG. 1 is provided with a recess for placing a disc on the upper surface, and is supported so as to be movable in the horizontal direction. The disc tray is transported by the first transport means between a first position, which is a disc storage position, and a second position outside the apparatus, and is transported by the second transport means, between the first position and a third position, which is a disc playback position. Will be transported in.

The reproducing means is moved up and down by the first positioning means so as to match the height of the disc tray.
The first transfer means and the second transfer means are moved up and down by the second positioning means so as to match the height of the disc tray.

The first transfer means and the second transfer means are selectively driven by the first driving means, and the first positioning means and the second positioning means are selectively driven by the second driving means.

The clamp means for clamping the disc on the turntable of the reproducing means is driven by the stroke after the second transport means transports the disc tray to the third position. Then, the clamp means presses the reproduction unit chassis, which is supported in a floating state by the frame of the reproduction means via the elastic member, or separates the reproduction unit chassis, to bring the disc into an unclamped state or a clamped state.

Next, the construction of the above-mentioned means and clamp means will be described with reference to the exploded perspective views separately shown in FIGS. The XYZ directions shown in the figures are common to each figure.
The X direction is the front direction, that is, the direction in which the disc tray 2 projects from the housing. In addition, the same reference numerals are attached to the center lines connected in each drawing.

The main chassis 1 shown in FIG. 2 supports the entire apparatus. Further, the holes 2a, 2 of the disc trays 2, 2 ...
.. pass through the rods 1a, 1a ... Shown in FIG. 3, and the disc trays 2, 2, ... Are supported by the rods 1a, 1a. The bracket 1d and the guide member 1b for fixing the rods 1a, 1a ...
It is fixed to.

The recess 2b provided in the disc tray 2 is a protrusion 3a of the tray open / close rack 3 shown in FIG.
Alternatively, it can be engaged with any of the protrusions 5a of the slider 5 supported by the loading rack 4. The tray open / close rack 3, the loading rack 4 and the slider 5 are transfer means holders 6 shown in FIGS. 5 and 6A.
And 7 are slidably supported in the X direction.

The transfer means holders 6 and 7 are fastened so as to sandwich these racks and sliders, and are supported by the main chassis 1 so as to be vertically movable. The starting rack 8 is supported by the transfer means holders 6 and 7 so as to be slidable in the X direction. The gear 9 is rotatably supported by the transfer means holders 6 and 7, and can mesh with the tray open / close rack 3, the loading rack 4 and the starting rack 8 as shown in FIG. 6B.

The shafts 6a, 6a of the transfer means holder 6 are inserted into the stepped grooves 10a, 10a of the slider 10 (shown in FIG. 5) which is slidably supported on the main chassis 1 in the X direction. Is moved up and down by the movement in the X direction. The gear 9 is always meshed with the final gear 11 having a wide tooth width, which is rotatably supported by the main chassis 1 shown in FIG.
The final gear 11 is rotated by a motor 12 and a speed reduction mechanism supported by the main chassis 1. Motor 12
The reduction mechanism, the final gear 11 and the gear 9 constitute a first drive means. 5 and 6, the drive units of the tray open / close rack 3, the loading rack 4, and the starting rack 8 will be described. The lock arm 13 is rotatably supported by the tray open / close rack 3, and the lock arm 13 is rotatably supported. The shaft 13a is inserted through the arcuate groove 3b of the tray open / close rack 3 and engaged with the J-shaped groove 6b of the transfer means holder 6. The shaft 13b of the lock arm 13 has an arcuate cutout 8 in the starting rack 8.
It can be engaged with a.

The lock arm 14 is the loading rack 4
Is rotatably supported on the shaft 1 of the lock arm 14.
4 a is inserted through the arcuate groove 4 a of the loading rack 4 and is engaged with the J-shaped groove 7 a of the transfer means holder 7. The shaft 14b of the lock arm 14 has an arcuate cutout 8 in the starting rack 8.
It can be engaged with b.

The lock arm 15 is rotatably supported by the slider 5, the shaft 15a of the lock arm 15 engages with the J-shaped groove 7b of the transfer means holder 7, and the circular arc of the loading rack 4 is provided. The shape cutout 4b can be engaged.

The microswitch 16 is a transfer means holder 6
, And detects the + X direction movement end position (tray open position) of the tray open / close rack 3. The micro switch 17 is fixed to the transfer means holder 6 and is operated by the slider 5 and the lever 21,
-X direction movement end position of tray open / close rack 3 (tray close position) and + of loading rack 4
The X-direction movement end position (unloading position) is detected. The micro switch 18 is fixed to the transfer means holder 6 and detects the −X direction movement end position (loading position) of the loading rack 4.

The micro switch 19 is the main chassis 1
It is fixed to the + X direction and detects the movement end position of the slider 10 in the + X direction (the home position which is the uppermost position of the transfer means holders 6 and 7). The micro switch 20 is fixed to the main chassis 1, and the protrusion 10 of the slider 10 is
It is operated by the lever 22 operated by b and 10b, and the moving distance of the slider 10 is counted. The controller detects the height of the transfer means holders 6 and 7 by the output signals of the microswitches 19 and 20.

The disk guide 23 shown in FIG. 3 is supported by the main chassis 1 so as to be vertically movable, and the coil spring 2
4 is urged upward. Shaft 2 on bracket 1d
A lever 25 rotatably supported via 6 holds the shafts 23a, 23a of the disc guide 23 to lower the disc guide 23. The lever 25 is the slider 1 shown in FIG.
It is rotated by the 0 boss 10c. Disc guide 23
Is lowered as the transfer means holders 6 and 7 are lowered. The position of the disc guide 23 coincides with the center hole of the disc on the tray at the position shown in FIG. 1 (the first position which is the disc storage position), and the disc guide 23 inserts the disc to prevent the disc from being displaced. .

The locking members 27, 27 ... Are supported by the bracket 1d so as to be movable in the Y direction, and are biased in the −Y direction by a leaf spring 28 attached to the bracket 1d. The locking members 27, 27 ... Are driven in the + Y direction one by one from the top when the transfer means holder 7 moves in the −Z direction by the protrusion of the transfer means holder 7 (not visible in FIGS. 5 and 6). To be done. At the timing of driving in the + Y direction, the locking members 27, 27 ... Normally lock the recess 2c (shown in FIG. 2) of the disc tray 2, but the protrusion 3a of the tray open / close rack 3 or the slider 5 is used. Protrusion 5
When a is engaged with the recess 2b of the disc tray 2, the engagement between the recess 2c of the disc tray 2 and the locking member 27 is released. That is, the locking member 27
The disc tray 2 which is disengaged from the protrusion 5a of the tray open / close rack 3 or the protrusion 5 of the slider 5 is
The height is such that it engages with a. Locking member 27,
27 ... Prevents the disc tray 2 from being displaced.

The frame 31 shown in FIG. 4 supports the reproducing unit chassis 30 in a floating state via an elastic member. FIG. 9 shows the supporting state of the reproducing unit chassis 30 in detail. The reproducing unit chassis 30 supports a disc motor to which an optical pickup and a turntable 30a are fixedly configured, and constitutes a reproducing unit. Two points at the rear end (-X direction in FIG. 4) of the reproduction unit chassis 30 are fastened to the frame 31 with screws via the elastic members 32, and two points at the front end are the elastic member 32 and the coil spring 33.
Is supported by being biased in the Z direction.

The clamper holder 31a is fastened to the frame 31, and supports a clamper 37 composed of a yoke 34, a magnet 35, and a magnet holder 36 with play at a position facing the turntable 30a.

The clamp arm 38 is rotatably supported by the frame 31 by its shaft 38a, and the shafts 38c, 38c of the clamp arm 38 extend above and below the front end of the reproducing unit chassis 30. The clamp slider 39 is supported by the frame 31 so as to be slidable in the front-rear direction, and the shaft 38b of the clamp arm 38 is inserted into an oblique groove 39b provided in the frame.

An elevating slider 41 shown in FIG. 4 is slidably supported in the main chassis 1 in the X direction, and a rotary member 42 rotatably supported by the main chassis 1 in an elongated hole 41b extending in the Y direction (see FIG. 2) shaft 42a
Is inserted. The shafts 31b, 31b ... Of the frame 31 pass through the stepped grooves 41a, 41a ... of the elevating slider 41 and the vertical grooves 1e, 1e ... of the main chassis 1 shown in FIG. The frame 31 is driven in the vertical direction (Z direction) by the movement of the elevating slider 41 in the X direction.

The levers 43 and 44 shown in FIG. 2 are rotatably supported by the main chassis 1, and the tension coil spring 4
5 is pressed against the cam 42b of the rotating member 42.
Microswitches 46 and 47 are arranged to be actuated on levers 43 and 44, respectively. Rotating member 4
As the frame 2 rotates in one direction, the frame 31 is moved up and down via the elevating slider 41 so as to match the height of the disc tray 2. The height of the frame 31 is detected by the outputs of the microswitches 46 and 47. To be done.

The clamp slider 39 described with reference to FIG. 4 is provided with a rack 39a, and the rack 39a constantly meshes with a gear 40 rotatably supported by the main chassis 1. The clamp slider 39 moves up and down together with the frame 31, but the tooth width of the gear 40 is wide and the clamp slider 3
Despite the ascent and descent of 9, the meshing does not come off.

An impeller 48 having a partial gear 48a that meshes with the gear 40 is rotatably supported by the main chassis 1.
The protrusion of the loading rack 4 described with reference to FIGS. 5 and 6 (formed at the rear of the loading rack so as to extend in the −Y direction and not visible in FIGS. 5 and 6) is rotated. A torsion coil spring 49 is pressed against a prism 48b provided at the lower part of the impeller 48, and the rotating position of the impeller 48 is maintained even if the protrusion of the loading rack 4 rises and is disengaged from the impeller 48. Be done.

The impeller 48 rotates the reproducing unit chassis 30 via the gear 40, the clamp slider 39, and the clamp arm 38 to perform the unclamping operation of the disc as described later, but the loading rack 4 causes the disc to move. It is driven by the stroke after transferring the tray 2 to the reproduction position.

The slider 50 slidably supported by the frame 31 and driven by the clamp arm 38 pivotally supports the main chassis 1 and pivots the lever 51 urged by the tension coil spring 52. The lever 51 actuates the micro switch 53, and the clamp state is detected by the output of the micro switch 53.

Next, with reference to FIGS. 2 and 5, the rotary member 42 and the drive portion of the slider 10 will be described. As shown in FIG. 2, a gear 42c is formed on the outer periphery of the rotating member 42, and the slider 10 shown in FIG.
Are formed. The pitch line of the deformed rack 10d has a shape in which an arc is smoothly connected to a straight line. The slider 10 has a guide groove 10e and an arc-shaped groove 10 along the deformed rack 10d.
f is formed.

When the slider 10 is at the end of movement in the X direction, the locking member 54 is supported by the main chassis 1 so as to be able to enter the arcuate groove 10f. The torsion coil spring 55 biases the locking member 54 in the counterclockwise direction (the inrush direction) in FIG.

The gear 56 shown in FIG. 2 is rotatably supported by the main chassis 1, and is rotationally driven by a motor 57 fixed to the main chassis 1 via a speed reduction mechanism. A shaft 59 press-fitted into a neck swing arm 58 that is rotatably supported coaxially with the gear 56 rotatably supports a pendulum gear 61. The pendulum gear 61 always meshes with the gear 56. The conical spring 60 interposed between the step of the shaft 59 and the pendulum gear 61 causes the pendulum gear 61 to move to the swing arm 5.
8 is pressed to generate frictional force. Due to this frictional force, the neck swing arm 58 receives a driving force in the rotation direction of the gear 56.

This driving force causes the swing arm 58 to rotate, and the pendulum gear 61 meshes with either the gear 42c of the rotating member 42 or the deformed rack 10d of the slider 10. When the pendulum gear 61 meshes with the gear 42c, the neck swing arm 58 receives a driving force in the clockwise direction when viewed from above,
The pendulum gear 61 rotates counterclockwise, and the rotating member 42 rotates clockwise.

When the motor 57 is reversed in this state,
The neck swing arm 58 rotates counterclockwise to move the pendulum gear 6
1 engages with the circular arc portion of the odd-shaped rack 10d of the slider 10. At that time, the shaft 59 is inserted into the guide groove 10e of the slider 10. In this way, the rotational position of the neck swing arm 58 is regulated by the engagement between the shaft 59 and the guide groove 10e and the engagement between the pendulum gear 61 and the deformed rack 10d. When the pendulum gear 61 rotates clockwise, the neck swing arm 58 further rotates counterclockwise. At this time, the shaft 58a of the neck swing arm 58 rotates the locking member 54 to engage with the slider 10. Release it.

When the pendulum gear 61 comes into mesh with the straight portion of the deformed rack 10d, the slider 10 is moved in the upper left direction (-X direction) in FIG. When the pendulum gear 61 meshes with the straight portion of the odd-shaped rack 10d, the swing of the neck swing arm 58 is restricted, and the forward / reverse rotation of the motor 57 causes the slider 10 to be fed in both directions. The range of rotation of the neck swing arm 58 in the clockwise direction is the main chassis 1
Of the pendulum gear 61 is regulated by the stopper 1f of the pendulum gear 61 by the friction torque applied to the swing arm 58.
Are prevented from biting into the gear 42c of the rotating member 42.

The motor 57, the speed reducing mechanism for reducing the rotation of the motor 57, and the gear 56 constitute the second drive means. The second driving unit drives the first positioning unit including the slider 10 and the second positioning unit including the rotating member 42 and the elevating slider 41.

Next, the operation of the tray open / close rack 3, the loading rack 4 and the starting rack 8 will be described with reference to FIGS. Figure 7 in the initial state
As shown in (a) and (A), the gear 9 is the starting rack 8
Tray open closed rack 3 that meshes with chisel
And does not mesh with the loading rack 4. When the gear 9 rotates clockwise in FIG. 7A, the starting rack 8 is sent to the right.

While the starter rack 8 is fed to the right, the shaft 13b of the lock arm 13 is drawn into the arcuate cutout 8a of the starter rack 8 and the lock arm 13 is rotated clockwise. Then, the shaft 13a of the lock arm 13 moves in the J-shaped groove 6b of the moving means holder 6 and enters the straight portion of the J-shaped groove 6b. At the same time, the shaft 13b is inserted into the back of the arcuate notch 8a so that the starting rack 8 and the tray open / close rack 3 move integrally.

FIG. 7B, FIG. 7B to FIG. 7D, and FIG. 7D show the tray open / close rack 3 being fed. When the start rack 8 is sent to the right together with the tray open / close rack 3, the gear 9 disengages. However, the tray open / close rack 3 meshes with the gear 9, and the tray 9 is opened by bidirectional rotation of the gear 9. The close rack 3 is sent bidirectionally.

The tray open / close rack 3 is moved from the position shown in FIG. 7A to the position shown in FIG. It is returned to the position shown in 7 (a). By moving the tray open / close rack 3, the disc tray 2 is transferred between a storage position and a position outside the apparatus.
The tray open / close rack 3 constitutes a first transfer means.

FIG. 8 shows the initial state (FIG. 8A and FIG.
In the state shown in (A), the case where the gear 9 rotates counterclockwise is shown. As described above, in the initial state, the gear 9 meshes only with the starting rack 8 and does not mesh with the tray open / close rack 3 and the loading rack 4. The gear 9 is shown in FIG.
When it is rotated counterclockwise, the starting rack 8 is fed to the left.

While the starter rack 8 is fed to the left, the shaft 14b of the lock arm 14 is drawn into the arcuate cutout 8b of the starter rack 8 and the lock arm 14 is rotated clockwise. Then, the shaft 14a of the lock arm 14 moves in the J-shaped groove 7a of the moving means holder 7 and enters the straight portion of the J-shaped groove 7a. At the same time, the shaft 14b is inserted into the arcuate notch 8b so that the starting rack 8 and the loading rack 4 move integrally.

FIG. 8B, FIG. 8B to FIG. 8D, and FIG. 8D show the loading rack 4 being fed. Starting rack 8 together with loading rack 4
Is disengaged from the gear 9 when sent to the left, but the loading rack 4 is engaged with the gear 9, and the bidirectional rotation of the gear 9 causes the loading rack 4 to be sent bidirectionally.

The loading rack 4 is moved from the position shown in FIG. 8 (a) to the position shown in FIG. 8 (d) by the counterclockwise rotation when viewed from above the gear 9, and by the clockwise rotation of the gear 9 shown in FIG. It is returned to the position shown in a). In the state shown in FIGS. 8A and 8B, the slider 5 is locked to the loading rack 4 by the lock arm 15.
Although it moves with the loading rack 4, when the shaft 15a of the lock arm 15 is guided by the J-shaped groove 7b of the transfer means holder 7 and the lock arm 15 rotates clockwise as shown in FIG. 15a is a loading rack 4
Out of the circular arc notch 4b of the loading rack 4
And the locked state of the slider 5 is released. The loading rack 4 can be further moved leftward with the slider 5 left.

8D and 8D show a state in which the loading rack 4 has moved to the left end of the movement. When the locked state of the loading rack 4 and the slider 5 is released, the shaft 15a is restricted by the edge of the loading rack 4 and the lock arm 15 does not rotate. The movement of the shaft 15a in the left-right direction is restricted by the J-shaped groove 7b, and the slider 5 is stopped.

The projection 5a of the slider 5 described above is engaged with the recess 2b of the disc tray 2, and the slider 5 transfers the disc tray 2 between the storage position and the disc reproducing position. The slider 5, the loading rack 4, and the lock arm 15 constitute second transfer means. The loading rack 4 further moves to the left with the slider 5 left, but the clamp means is driven by such movement of the loading rack 4 as described above.

Next, the disc clamping / unclamping operation will be described with reference to FIGS. 9, 10 and 11.
Although details of the clamp slider 39 are not shown in FIG. 4, as shown in FIGS.
An L-shaped groove 39c extending in the X-direction and the Y-direction is provided on the projection on the upper part of 9. The torsion coil spring 62 mounted on the frame 31 enters the L-shaped groove 39c and presses the clamp slider 39 in the X direction and the Y direction.

As described above, the clamp slider 39
The clamp arm 38 is rotated by the movement in the X direction,
The playback unit chassis 30 is pressed or released to perform unclamping or clamping operation. Specifically, when the clamp slider 39 moves in the + X direction, the disc is unclamped, and when it moves in the −X direction, the disc is clamped. 11C and 11F show the disc clamped state. At this time, the turntable lifts the disc from the disc tray (not shown in FIG. 11C) and clamps it. Figure 11
(A) and (d) show the disc unclamped state. 11 (b) and 11 (e) show an intermediate state.

The reproduction unit chassis 30 is a frame 31.
Although the playback unit chassis 30 is directly driven by the clamp / unclamp operation, the turntable is separated from the clamper after the elastic member is elastically deformed while the turntable is attracted to the clamper. There is no shock as with time. In the case where the clamp / unclamp operation is performed by driving the frame, an impact occurs when the turntable separates from the clamper.

The load of the clamp arm 38 differs between the clamp operation and the unclamp operation. That is, the clamping force of the clamper and the elastic force of the coil spring 33 act in the rotating direction of the clamp arm 38 during the clamping operation, but in the opposite direction during the unclamping. As described above, the load of the clamp arm 38 is unbalanced, but the load of the clamp slider 39 is balanced by the action of the torsion coil spring 62.

In the clamped state shown in FIG. 10D, the torsion coil spring 62 does not apply a force to the clamp slider 39 in the X direction (unclamping operation direction). The load is not so great while the clamp slider 39 moves to the position shown in FIG. 10 (c), but after this point, the load sharply increases.

At that time, the torsion coil spring 62 applies a large force in the moving direction of the clamp slider 39, and the load for driving the clamp slider 39 is balanced. During the clamp operation, the torsion coil spring 62 increases the load on the clamp slider 39, but the elastic force of the coil spring 33 acts as a driving force for the clamp slider 39 and reduces the load by the torsion coil spring 62.

Next, the disk storage operation, disk loading operation, disk replacement operation, etc. will be described. When the disc is stored in the device, in the initial state where the loading rack 4 is in the forward position (+ X direction movement end) and the tray open / close rack 3 is in the retracted position, the moving means holders 6 and 7 are moved up and down to open and close the tray. The protrusion 3a of the rack 3 is adjusted to the height of the disc tray 2, and the tray open / close rack 3 is moved forward to project the disc tray 2 out of the housing. Then, the disc is placed on the disc tray 2 and the disc tray 2 is pulled into the housing.

When loading the disc, the moving means holders 6 and 7 are moved up and down in the above-mentioned initial state to move the slider 5
5a is adjusted to an arbitrary height of the disc tray 2 and the loading rack 4 is retracted to move the disc tray 2 to the reproducing position. By further retracting the loading rack 4, the disc is clamped, and the disc is brought into a reproducing state.

In the case of exchanging a disc on the other disc tray in the storage position in the reproducing state, first, the moving means holders 6 and 7 are raised to remove the projection of the loading rack 4 from the impeller 48. At this time, the protrusion 5a of the slider 5 is disengaged from the recess 2b of the disc tray 2, but during clamping, the protrusion 38d of the clamp arm 38 is in the square hole 2d of the disc tray 2, so the position of the disc tray 2 is It is regulated.

Then, the loading rack 4 is advanced to the initial position. It is apparent from the above description that the disc on the disc tray can be exchanged in this state. In this way, the disc on the disc tray other than the disc tray on which the disc being reproduced is placed can be exchanged while the disc is being reproduced.

[0062]

According to the disc reproducing apparatus with the disc changer of the present invention, the disc tray transfer operation for disc exchange and the disc tray transfer operation for disc loading are performed by using one motor as a drive source.
Since the power transmission of the drive source is switched only in the rotation direction of the motor, the number of motors used is small and it is not necessary to match the operation timing of the power transmission switching mechanism.

[Brief description of drawings]

FIG. 1A is a plan view for explaining a schematic configuration of a disc reproducing apparatus with a disc changer according to an embodiment of the present invention, and FIG. 1B is a side view of the same.

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

FIG. 3 is an exploded perspective view showing another portion of the disc reproducing apparatus.

FIG. 4 is an exploded perspective view showing still another portion of the disc reproducing apparatus.

FIG. 5 is an exploded perspective view showing still another portion of the disc reproducing apparatus.

FIG. 6 is a first transfer means and a second transfer means of the disc reproducing apparatus.
It is an exploded perspective view showing a transfer means.

7A to 7D are side views for explaining the operation of the first transfer means and the second transfer means of the disc reproducing apparatus, and FIGS. 7A to 7D are the same parts. It is a top view.

8A to 8D are side views for explaining the operation of the first transfer means and the second transfer means of the disc reproducing apparatus, and FIGS. 8A to 8D are the same parts. It is a top view.

FIG. 9 is an exploded perspective view showing a clamp means of the disc reproducing apparatus.

FIG. 10 (a) is a perspective view showing a portion of the clamp means, and FIGS. 10 (b) to 10 (d) are partial plan views for explaining the operation of the clamp means.

11 (a) to 11 (c) are front views for explaining the operation of the clamp means, and FIGS. 11 (d) to 11 (f) are side views for explaining the operation of the clamp means. is there.

[Explanation of symbols]

1 main chassis, 1a rod, 1b guide member, 1c top plate, 1d bracket, 1e vertical groove, 1f
Stopper 2 Disc tray, 2a hole, 2b recess, 2c recess, 2d square hole 3 tray open / close rack, 3a protrusion, 3b
Arc-shaped groove 4 Loading rack, 4a Arc-shaped groove, 4b Arc-shaped notch 5 Slider, 5a Protrusion 6 Moving means holder, 6a shaft, 6b J-shaped groove 7 Moving means holder, 7a J-shaped groove, 7b J-shaped Groove 8 Starter rack, 8a, 8b Arc notch 9 Gear 10 Slider, 10a Stepped groove, 10b Protrusion, 1
0c boss, 10d irregular rack, 10e guide groove, 1
0f Arc-shaped groove 11 Final gear 12 Motor 13 Lock arm, 13a, 13b Shaft 14 Lock arm, 14a, 14b Shaft 15 lock arm, 15a Shaft 16, 17, 18, 19, 20 Micro switch 21, 22 Lever 23 Disk guide 24 Coil spring 25 Lever 26 Shaft 27 Locking member 28 Leaf spring 30 Playback unit chassis, 30a Turntable 31 Frame, 31a Clamper holder, 31b Shaft 32 Elastic member 33 Coil spring 34 Yoke 35 Magnet 36 Magnet holder 37 Clamper 38 Clamp arm, 38a , 38b, 38c axes,
38d convex portion 39 clamp slider, 39a rack, 39b
Groove, 39c L-shaped groove 40 gear 41 lifting slider, 41a step groove, 41b elongated hole 42 rotating member, 42a shaft, 42b cam, 42c
Gears 43 and 44 Lever 45 Tension coil springs 46 and 47 Micro switch 48 Impeller, 48a Partial gear, 48b Square column 49 Torsion coil spring 50 Slider 51 Lever 52 Tension coil spring 53 Micro switch 54 Locking member 55 Torsion coil spring 56 gear 57 motor 58 neck swing arm, 58a shaft 59 shaft 60 conical spring 61 pendulum gear 62 torsion coil spring

Continuation of the front page (56) Reference JP-A-7-282520 (JP, A) JP-A-63-79273 (JP, A) JP-A-1-224970 (JP, A) JP-A-61-142559 (JP , A) JP-A-63-217563 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 17/30 G11B 17/26

Claims (2)

(57) [Claims] 1. A plurality of disc trays on which discs are placed and arranged so as to be vertically stacked, a guide fixed to the main body of the device for guiding the disc trays in the horizontal direction, and a disc storage position for the disc trays. A first position for horizontal transfer between a first position which is
Transfer means, second transfer means for horizontally transferring the disc tray from the first position to a third position opposite to the second position, and a reproducing means for reproducing a disc on the disc tray at the third position; First positioning means for raising and lowering the reproducing means to position the disc tray at an arbitrary height, clamping means for clamping the disc on the positioned reproducing means, and raising and lowering the first transfer means and the second transfer means. Second positioning means for positioning the disk tray at an arbitrary height of the disc tray, and the gear of the first driving means selectively meshes with the tray open / close rack of the first transferring means or the loading rack of the second transferring means. The first transfer means, the second transfer means, and the clamp means are driven by the first drive means by being fitted to each other, and the first positioning means and the second positioning means. In a disk reproducing device with a disk changer configured to be driven by a second driving means, the tray open / close rack, the loading rack and the starting rack are arranged so as to be capable of meshing with the gear of the first driving means. In the state, the gear meshes only with the starting rack, and the movement of the starting rack in the initial state by the rotation of the gear in one direction causes the starting rack to bring the tray open / close rack into the meshed state with the gear. A disk reproducing device with a disk changer configured such that the starting rack guides the loading rack into engagement with the gear by the movement of the starting rack due to rotation in the other direction. 2. The disc reproducing apparatus with a disc changer according to claim 1, wherein the clamping means is driven by a stroke after the loading rack drives the first transfer means.