JPH0339347B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a disc player, and more particularly to a disc transport mechanism in a disc player that is capable of playing a plurality of types of discs having different outer diameters.

BACKGROUND ART Recently, disc players that can play both optical video discs and compact discs have been developed. In order to rotate these disks, a turntable that supports the disk and a spindle motor that rotates the turntable are used, but for optical video disks and compact disks, the center hole diameter, clamping area, and signal start The dimensions specified by the disk standards, such as the diameter, are greatly different, and it has been difficult to create a turntable that can hold both disks in common. In addition, in order to accurately trace the pits (dents) carved in microscopic order on the disk, it is necessary to have extremely accurate pickup performance and disk rotation control. Since the playback rotation speed of an optical video disk, which has a larger outer diameter and weight than a compact disk, is relatively high, a spindle motor that rotates the disk is required to be suitable for high-load, high-speed rotation.

On the other hand, compact discs are small and lightweight, weighing approximately 1/10 of optical video discs, and have a low playback rotation speed, and when driven in rotation, they are easily affected by cogging and torque fluctuations, so extremely high-precision rotation control is required. need to be done.

For the reasons mentioned above, in disc players that have already been developed, the spindle motors are not shared, but dedicated spindle motors are provided for each of the optical video disc and the compact disc. Although optical video discs and compact discs have the above-mentioned differences, both use a transparent resin surface to focus a laser beam onto a pit and read information signals from the reflected light. Therefore, a format is adopted in which information signals from both disks are read by a single pickup.

FIG. 19a schematically shows the main parts of a disc player that has already been developed. As shown in the figure, a first turntable 202 carries an optical video disk 201 and is driven to rotate by a spindle motor (not shown), and a first turntable 202 carries an optical video disk 201 and is driven to rotate by a number of spindles (not shown) to carry a compact disk (described later). Second turntable 20
3 are arranged so that their rotational central axes are located in the same plane, and each rotates in the direction of arrow Y and in the opposite direction (for example, the front-rear direction of the disc player).
It is capable of reciprocating freely. Although not shown, moving means for moving the first turntable 202 and the second turntable 203 is provided. Note that the position of the first turntable 202 shown in FIG. 19a is the disk rotation drive position of each turntable, and in this case, the arrow Y The carriage 204 is configured to reciprocate in the direction of the arrow X perpendicular to the direction and in the opposite direction (left-right direction of the disk player). The carriage 204 houses an optical pickup means including an objective lens 205.

FIG. 19b shows the state when playing the compact disc 206, in which the second turntable 203 is moved to the disc rotation drive position, and the first turntable 202 is removed from this position. ing.

On the other hand, the above-described disc player includes a disc carrying mechanism that can protrude outside the player housing and includes a disc carrying portion that carries a disc to be played, and that transports the disc to a playing position. When positioning the disk placed on the disk carrying part outside the player housing on the disk carrying surface of the turntable on the spindle motor at the performance position, that is, the disk rotation driving position, the direction parallel to the disk carrying surface. and a direction perpendicular to this direction. FIG. 20 shows a carry 208 as the main part of the disk carrier included in an already developed disk player. As shown, the Carry 208 has a diameter of approximately 30 cm.
and first disk supporting surfaces 208a and 208b that respectively support a 20 cm optical video disk 201.
and a second disk supporting surface 208c that supports the compact disk 206 are provided concentrically. As mentioned above, in the disk ejecting mechanism that carries different types of disks into the player housing and out of the player housing using the same carrier, the disk is delivered to the disk playing means and received from the playing means when the carry is stored. The degree of freedom in design, in which the relationship between the position of the disk and the disk mounting position at the carry protrusion position is fixed, is severely restricted, and the demand for miniaturization cannot be met satisfactorily.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to provide a disk transport mechanism that contributes to miniaturization of the entire disk player.

The disk transport mechanism according to the present invention is provided so as to be able to protrude from and be stored in a player housing, and is configured to carry a disk and move it in a direction substantially parallel to and substantially perpendicular to a disk carrying surface of a turntable. The disk holding part is
The first and second carries are capable of carrying disks of different diameters and are movable relative to each other in a plane substantially parallel to the disk carrying surface of the turntable, and the relative relationship between the first and second carries is The present invention is characterized in that the movement is performed in response to the protruding and retracting operation of the disc holder with respect to the player housing.

Embodiments Hereinafter, a disk player including a disk transport mechanism as an embodiment of the present invention will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 indicates the entire disc player.

As shown in FIG. 1, the front surface of the housing 2, that is, the front panel 3, is provided with a rectangular opening 3a extending in the left-right direction so that the disk carrying part 5 can protrude to the outside of the housing. ing. However, left and right here refers to arrow Y.
It is directed towards the front as indicated by the arrow
The direction is to the left. Further, arrow Z indicates upward.
A door 6 is provided near the opening 3a to close the opening. A group of switches 7 are provided on the front panel 3 to operate the disc player.

A chassis 8 is provided within the housing 2, and a base member 10 shown in FIG. 2 is fixed to a predetermined position on the lower surface of the chassis with screws 11 or the like. These base members 10 and screws 11
etc. are collectively referred to as the support mechanism. One end of the base member 10 has a first turntable 13a attached to its output shaft.
A first spindle motor 13b fitted with the first spindle motor 13b is fixedly installed. This first spindle motor 13b
is for rotating an optical video disk 14 having a diameter of approximately 30 cm or 20 cm,
Suitable for high-load, high-speed rotation. A carriage 15 carrying an optical pickup means is disposed behind the first spindle motor 13b, and a carriage 15 carrying an optical pickup means is disposed behind the first spindle motor 13b.
3c, it is guided by a guide shaft 16 provided on the base member 10.

Also on the base member 10 is a second
A second spindle motor 19b is provided to which a turntable 19a is fitted and for rotating a compact disk 18 having a diameter of about 12 cm. The second turntable 19a has a first position indicated by a solid line in FIG. 2, and a second position indicated by a two-dot chain line in FIG.
It can be moved freely between locations. This first position means that the disk supporting surface 19c of the second turntable is on substantially the same plane as the disk supporting surface 13a of the first turntable 13, and the distance between the centers of rotation with the first turntable 13 is The radius of the compact disk 18 to be carried is D ₂ /2 (however, D ₂
is a position larger than the sum of the diameter of the compact disk 18) and the radius _R1 of the disk supporting surface of the first turntable 13. That is, the outer periphery of the compact disc 18 placed on the second turntable 19a in the first position does not come into contact with the first turntable 13. Further, the second position is a position away from the plane including the disk carrying surface 13c of the first turntable 13 and the movement trajectory of the carriage 15. However, although the second position is different from the detached position shown in the figure, even if the second position is within a plane including the disk supporting surface 13c of the first turntable 13, the optical system placed on the first turntable 13 can be As long as it is outside the diameter of the standard video disk 14. As is clear from the figure, the movement of the second turntable 19a is performed by rotational movement that changes the direction of the rotation center axis of the second turntable. The second position is below the plane including the disk supporting surface 13c of the first turntable 13 and is on the side of the movement trajectory of the carriage 15. There is no other mechanism at this position, and by setting the second position at this position, the so-called dead space is effectively utilized, which helps reduce the size of the disc player as a whole, especially in the direction of arrow Z. It is becoming easier to make devices smaller and thinner. In addition, the first
It is also possible to set the second position below the plane including the disk carrying surface 13c of the turntable 13 and the movement trajectory of the carriage 15. In this case, the disk player can be miniaturized in the direction of the arrow X or the arrow Y. It becomes easier. Furthermore, in the illustrated second position, the direction of the rotation center axis of the second turntable 19a is perpendicular to the direction of movement of the disk carrying surface 13c of the first turntable 13 and the carriage 15, that is, approximately in the direction of arrow X. However, it is also possible to set the second position so that the rotation center axis coincides with, for example, the direction of arrow Y.

The moving means for moving the second turntable 19a will be explained based on FIGS. 3a to 3c.

As shown, the second spindle motor 19
b has a leg member 19d, which is rotatably attached to the base member 10 via a support pin 20 at the distal end of the leg member. Second
A sector gear 21 is located near the spindle motor 19b.
is provided. The fan-shaped gear 21 is a gear body 21
a, an intermediate member 21c which is separate from the gear body and is rotatable about the same axis 21b as the gear body, and is interposed between the gear body and the intermediate member to couple them together. It consists of a coil spring 21d which is a spring member. A lever member 22 is rotatably attached at one end to the rotating end of the intermediate member 21c, which is a constituent member of the sector gear 21, and the other end of the lever member is freely attached to the second spindle motor 19b. It is pivotally attached to the end via a pin 22a. Gear body 21 of sector gear 21
A gear 23 is meshed with a. This gear 23
is the worm wheel 2 that meshes with the worm 24
It is integrally molded with 5. warm 24
is connected to the output shaft of the motor 30 via a pair of pulleys 27, 28 and a belt 29. These gears 23, worm 24, worm wheel 2
5, pulleys 27, 28, belt 29 and motor 3
0 constitutes a rotational force applying means that applies rotational force to the fan-shaped gear 21. Further, the rotational force applying means, the sector gear 21, the lever member 22, and the like constitute a moving means for rotationally moving the second turntable 19a.

The moving means, the first and second turntables 13a and 19a, the first and second spindle motors 13b and 19b, a support mechanism including a base member 10 that supports both spindle motors, and an optical pickup means The carriage 15 containing the disc 15 and peripheral small members related thereto constitute a performance means for performing a disc performance.

Next, a description will be given of a disk conveyance mechanism that includes the aforementioned disk carrying section 5 and conveys a disk to be played to a performance position.

As shown in FIG. 1 and FIG.
It has a carry 32 and a second carry 33 that carries the compact disc 18 to be placed on the second turntable 19a. Two circular shallow recesses 32a and 32b are formed concentrically on the upper surface of the first carrier 32, into which optical video disks having diameters of approximately 30 cm and 20 cm are inserted, respectively.
Further, the upper surface of the second carrier 33 has a circular recess 33a into which the compact disc 18 can be inserted, and a circular recess 33a into which the compact disc 18 can be inserted, and a second carrier 33 for an optical video disc with a diameter of 20 cm.
A portion 3 that can be continuous with the circular recess provided in 2.
3b are formed. A pair of left and right guide shafts 34 are provided at the bottom of the first carry 32 and extend in a plane parallel to the disk supporting surface 13c of the first turntable 13, in this case, in the front-rear direction (direction of arrow Y and the opposite direction). The second carry 33 is slidably attached to both guide shafts. Note that FIGS. 1 and 4 show the state before the second carry 33 moves, and in this state, the circular recess 33a formed in the second carry 33 for inserting the compact disk is
It is located concentrically with respect to circular recesses 32a and 32b provided in the first carrier 32 for fitting an optical video disk. A pair of protrusions 33d are provided on both left and right sides of the second carry 33,
This protrusion 33d is attached to a total of four locking portions 32d and 32e, two of which are provided on the lower surface of the first carry 32.
By engaging, movement of the first carry 33 with respect to the first carry 32 is restricted within a predetermined range.

As is clear from Fig. 4, the first carrier 32
A pair of slide members 35 extend in the front and back direction so as to sandwich the second carry 33 from left and right on the lower surface of the
are provided, and both slide members are capable of reciprocating within a predetermined range in the front-rear direction with respect to the first carry 32. The other end of a coil spring 36 attached to the first carry 32 at one end is connected to both slide members 35,
Both slide members are biased rearward (in the opposite direction of arrow Y) by the coil springs. Each slide member 35 has a rack portion 35a formed along the movement direction on one side in the movement direction, and a gear 38 provided on the lower surface of the first carrier 32 meshes with the rack portion. This gear 38 has two large and small gears provided on the same axis.
The small gear 40 has two gears 39 and 40, and is engaged with the rack portion 35a. large gear 39
is another rack part 33e provided on both left and right sides of the second carry 33 corresponding to the rack part 35a.
It meshes with.

On the other hand, as also shown in FIG. 4, an L-shaped contact portion 2a is provided at a predetermined position within the housing 2, with which the rear end portion of the slide member 35 can come into contact. That is, the rear end of the slide member 35 comes into contact with the abutting part 2a during the rearward movement of the disk carrier 5, and as the disk carrier 5 moves further rearward from this state, the second carrier 33 is moved. It is configured to move rearward with respect to the first carry 32.

7 to 9 show the slide member 35 and the second
Components of the gear 38 interposed between the gear 33 and the carrier 33 are individually shown. As illustrated, a large gear 39, which is a component of the gear 38, is provided with a boss portion 39a, and the small gear 40 is rotatably fitted into the boss portion. A pair of hook portions 40a are formed on one main surface of the small gear 40, and the hook portions are fitted into a pair of fan-shaped openings 39b formed in the large gear corresponding to the hook portions. In some cases, the small gear 40 is the large gear 3.
9, it can be rotated within a predetermined range.
Further, a flange portion 39c is provided on the inner line of the fan-shaped opening 39b, and the hook portion 40a engages with the flange portion, thereby preventing the small gear 40 from falling off from the large gear 39. ing. large gear 39
A ring spring 41 shown in FIG. 9 is interposed between the small gear 40 and the small gear 40. One end of the ring spring 41 is engaged between two protrusions 39d and 39e protruding from the main surface of the large gear 39, and the other end of the ring spring 41 is engaged with a hook 40a of the small gear 40. It has been stopped. That is, the large gear 39 and the small gear 40 are connected via the elastic force of the ring spring 41.
As a result, when a rotational force of a predetermined amount or more is applied between the two gears, the two gears rotate relative to each other.
Note that, as is clear from the above-described configuration, when the disk support portion 5 protrudes outside the housing 2, the bias force of the coil spring 36 is transmitted to the second carry 33 via the slide member 35 and the gear 38, and The second carry is returned to the position shown in FIG.

The slide member 35 described above, the gear 38, and the rack portion 33e formed on the second carry 33,
The movement of the second carry 33 relative to the first carry 32 is controlled by the coil spring 36 serving as a bias force applying means.
A carry movement mechanism is configured to perform the projecting and retracting operation.

Here, by appropriately determining the position of the contact portion 2a protruding inside the housing 2 so that the rear end portion of the slide member 35 comes into contact with the first carrier 32,
The rearward movement of the second carry 33 relative to the disk carrier 33 is set to start after the rearward movement of the disk carrier 5 is started. Disk holding part 5
is manually pushed into the housing 2 from the protruding position shown in FIG. 1 to the position shown in FIG. Yes, but
By determining the timing for starting rearward movement of the second carry 33 as described above, even if excessive force is applied during manual pushing, the second carry 33 and other members will not be adversely affected. .

In this embodiment, when the disk carrying part 5 protrudes outside the housing 2, that is, when the disk carrying part is made to carry a disk, the position of the second carrier 33 is approximately at the center of the disk carrying part. However, it is also possible to position the second carry 33 in this state near the end in the protruding direction of the disk holder. With this configuration, compact disk 1
8 on the second carrier 33, it is no longer necessary to draw out the disk carrying portion 5 to the outside of the housing 2, and operability is improved.

As shown in FIGS. 4 and 5, a pair of rectangular plate-shaped support members 44 are provided so as to sandwich the disk holder 5 on both the left and right sides, and the disk holder 5 is held between the two support members. It is supported so as to be movable in a direction parallel to the disk supporting surface 13c of the first turntable 13, in this case, in the front-rear direction (direction of arrow Y and the opposite direction thereof). As is clear from FIG. 5, a pair of pins 44a are protruded from the outer surface of the support member 44 and are spaced apart in the front-rear direction. It is fitted so that it can be moved freely. That is, the support member 44 is adapted to move along the L-shaped guide hole.
The L-shaped guide hole 8a includes a parallel portion 8b extending parallel to the disk supporting surface 13c of the first turntable 13, and a parallel portion 8b extending perpendicularly to the disk supporting surface 13c continuously from the rear end of the parallel portion. It consists of a vertical portion 8c. A pair of left and right rectangular plate-shaped moving members 45 are provided so as to sandwich the L-shaped guide hole 8a together with the support member 44. Each moving member 45 is attached to the chassis 8 so as to be movable in the front-rear direction (the direction of arrow Y and the opposite direction). The pins 44a protruding from each support member 44 are
Through the L-shaped guide hole 8a of the chassis 8, it is slidably engaged with a cam hole 45a formed in each moving member 45. The cam hole 45a has a parallel portion 45b extending in a direction parallel to the disk supporting surface 13c of the first turntable 13, in this case, in the front-rear direction;
Continuing with the rear end of the parallel portion and rearward (opposite arrow Y
direction) and an inclined portion 45c that slopes upward (in the direction of arrow Z). That is, each moving member 45
When the support member 44 moves in the front-back direction with respect to the support member 44, the support member and the disk support portion 5 supported by the support member move in the vertical direction, that is, in the direction perpendicular to the disk support surface 13c of the first turntable 13. The cam hole 45a is formed to do so.

As is clear from FIG. 5, the pair of moving members 4
A rack portion 45e is formed at the lower end of the moving member 5, and a gear 47 meshes with the rack portion of one of the moving members. This gear 47 includes another gear 48 that meshes with the gear 47, and a gear portion 49a that meshes with the gear 48.
A pulley 49 is connected to an output shaft of a motor 52 via a belt 50 and a small pulley 51, which are integrally formed. Although not shown, the gear 47
The other end of the shaft 53 fitted to one end reaches the vicinity of the other moving member 45, and a gear that meshes with a rack formed on the moving member is fitted to the other end. has been done. That is, gear 47
By rotating, the pair of left and right moving members 4
5 are set to move together.

The pair of moving members 4 are operated by the gears 47, 48, the pulley 49, the belt 50, the small pulley 51, the motor 52, the shaft 53, etc.
A driving means for driving 5 in synchronization is configured. Further, the drive means, each support member 44, both moving members 45, and the L-shaped guide hole 8a of the chassis 8
A drive mechanism for driving the disk carrying section 5 is constituted by these and related peripheral small members.

Although not shown, when the disk holder 5 is moved in the storage direction (rearward) into the housing 2 and reaches the limit position of movement relative to the support member 44, the disk holder 5 is locked relative to the support member. Locking means are provided. Further, so that the support member 44 is moved together with the movable member 45 in the storage direction of the disk carrier, the pin 44a of the support member reaches the intersection of the parallel portion 8b and the vertical portion 8c of the L-shaped guide hole 8a. A locking/releasing means is provided which locks the supporting member to the moving member 45, releases the locked state when the pin 44a reaches the intersection, and locks the supporting member 44 to the chassis 8 only in the storing direction. It is provided.

These locking means and lock/release means, the disk carrying part 5, the carry moving mechanism (described above) consisting of the slide member 35, etc., the drive mechanism for driving the disk carrying part (described above) including the chassis 8, the moving member 45, etc. ) and related peripheral small members constitute a disk conveyance mechanism that conveys the disk to be played to the performance position, that is, each turntable.

As shown in FIG. 5, another rack portion 45f is formed at the lower end of the moving member 45 behind the rack portion 45e. This rack part 45
A gear 56 for operating a rotary potentiometer 55 is meshed with f. The potentiometer 55 and the gear 56 are attached to a bracket portion 8e projecting from the lower end of the chassis 8. Although not shown, a comparator for comparing the terminal voltage of the potentiometer 55 with a reference voltage is incorporated in the control circuit that controls the operation of the disc player. As also shown in FIG. 5, the front and rear ends of the movable member 45 are engaged with the front and rear ends of the chassis 8, respectively, so that the movable member, and hence the disk supporting portion 5, are engaged with each other.
A pair of detection switches 57 and 58 are attached to detect the movement start position and movement end position of the movement. These potentiometer 55, comparator (described above), detection switches 57, 58, etc.,
A position detecting means for detecting the position of the disk holding section 5 is configured.

It should be noted that the moving member 45, and hence the disk holding section 5
It is possible to detect the position using only the potentiometer 55, but as described above, the detection switch 57,
By using 58 in combination, the accuracy of position detection of the disk holder 5 can be improved, and the configuration of the above-mentioned control circuit can also be simplified. Further, although the gear 56 for operating the potentiometer 55 is meshed with the rack portion 45f of the moving member 45, the gear may be configured to mesh with the gear 47 or the gear 48. Furthermore, although a rotary type potentiometer is used in the disc player, it is also possible to use a linear displacement type so-called slide volume.

Next, a description will be given of a clamping mechanism that clamps the disc transported to the performance position.

As shown in FIGS. 4 and 5, within the housing 2 are a pair of substantially rectangular plate-shaped holding members 6 that are spaced apart from each other in the front and back and extend in the left and right directions.
1 and 62 are provided. Each holding member 61,
62 is swingably attached to the support member 44 via a pin 44c at each front end. Further, the rocking direction of each holding member is substantially perpendicular to the disk supporting surface 13c of the first turntable 13. However, each holding member 61, 62
Arc-shaped notches 61a, 62 formed at each rear end of
a is another pin 44d protruding from the support member 45;
The holding members 61 and 62 are fitted with a slight gap therebetween, thereby restricting the downward swinging of the holding members 61 and 62 within a predetermined range, and are configured to be able to swing around the pin 44c as a fulcrum. ing. As shown in FIG. 6, the lower surfaces of each holding member 61 and 62 are provided with first and second turntables 13a and 19a.
A disc-shaped first pressing member 63 and a second disc-shaped pressing member 64, which cooperate with each other to perform a disk clamping action, are rotatably attached, respectively. As shown in FIG. 5, each holding member 61 and 62
Coil springs 65 and 66 are respectively connected to the rear end portions of the springs. Each coil spring has a first
The third pressing members 63 and 64 act to urge both the holding members 61 and 62 in a direction toward the first and second spindle motors 13 and 19, respectively.

As shown in FIG. 5, a roller 62b is provided at the side end of the holding member 62 disposed at the rear, and the roller 62b is attached to a timing cam portion 45h formed at the upper end of the moving member 45. engaged. The shape of this timing cam portion 45h, the shape of the cam hole 45a provided in the moving member 45,
The timing of attaching and detaching the first and second pressing members 63 and 64 to the first and second spindle motors 13 and 19 is set by appropriately determining the amount of movement of the moving member and the like. That is, the first and second spindle motors 13 and 19
The attachment and detachment of the second pressing member and the second pressing member are performed individually. Note that, as is clear from the above explanation, no special drive source is provided for moving the first and second pressing members 63, 64 together with the holding members 61, 62, and this moving operation is performed as described above. This is done by applying driving force to the disc transport mechanism.

The first and second pressing members 63 and 64 described above,
The holding members 61 and 62 that hold these and the coil springs 65 and 66 as biasing means constitute a clamping mechanism that clamps the disks transported to the performance position, that is, each turntable.

Next, the operation of the disk player having the above-mentioned structure will be briefly explained along with the playing procedure with reference to FIGS. 10 to 16.

First, the case where the optical video disc 14 (see FIG. 2) is played will be explained. As shown in FIG.
The optical video disc is fully protruded to the outside and placed in a predetermined position on the disc holder. In addition,
The operation of protruding the disk carrier 5 out of the housing is performed by following the reversal of the retracting operation described below, and therefore will not be described in detail.

Once the optical video disc is placed on the disc holder 5, the disc holder 5 is manually pushed into the housing 2 to the position shown in FIGS. 4-6. When the disk carrier 5 reaches this position, a predetermined detection switch is activated, whereby the motor 52 shown in FIG. 5 begins to rotate. At this time, the disk holding section 5 is attached to the support member 44.
The locking means puts the locking state into a locked state, and begins to be pulled in integrally. Therefore, as shown in FIG.
direction) and is completely housed within the housing 2. Further, as shown in FIGS. 10 and 11, the second carrier 33 is connected to the second turntable 19.
It is moved to the position corresponding to a. Further, at this time, the diameter of the disc to be played is determined by a determining means (not shown).

The disk being transported is an optical video disk 14
When it is determined that this is the case, the moving member 45 is further driven backward by a predetermined distance, as shown in FIG. Therefore, the disc carrier 5 descends together with the support member 44, and the optical video disc 14
is placed on the first turntable 13, and
It is clamped as shown in FIG. In this state, the motor 52 stops and disc performance becomes possible.

When the loading of the optical video disc 14 is completed, the first spindle motor 13b rotates, the carriage 15 (see FIG. 2) begins to operate, and disc performance begins.

When the performance ends and a detection switch (not shown) detects that the carriage 15 has reached its travel limit position, the carriage 15 and the first spindle motor 13b are stopped, and at the same time the motor 52 is stopped.
starts reversing operation. Therefore, as mentioned before, the disk support part 5 protrudes to the outside of the housing 2 through a process completely opposite to that described above, the lock is released, and the disk support part 5 moves forward and backward with respect to the support member 44. It becomes free and becomes the state shown in FIGS. 4 to 6. After this, the disk holding section 5
Manually pull out the optical video disc 14
Collect.

The disc being played is Compact Disc 18.
(See FIG. 2) will be explained. The operation of the disk transport mechanism is exactly the same as that for the optical video disk 14 up to the state shown in FIG. When the above-mentioned determining means determines that the disc to be played is the compact disc 18, the moving member 45 is driven further rearward from the state shown in FIG. 13 to reach the state shown in FIG. 15. Thus, compact disk 18 is the 16th disk.
As shown in the figure, the second turntable 19a
It is clamped at the top. In addition, Fig. 14 and 1
The movement of the second turntable 19a shown in FIG. 6 is performed in response to a signal from the discrimination means.

In this disc player, the movement of the second carry 33 carrying the compact disc 18 with respect to the first carry 32 is performed by linear reciprocating motion; As shown in a and b, the second carry 33 may be a member that swings around the support shaft 70, and a gear 71 and a rack member 72 may be added to drive the second carry. .

Further, in the disc player, when the optical video disc 14 is clamped, the second pressing member 64 for the compact disc 18 is in the clamp release position, and when the second pressing member 64 is in the clamp position, the optical video disc 1
The first pressing member 63 for the second pressing member 64 is also set at the clamp position, but the configuration is not limited to this. For example, a timing cam portion 45h may be provided to move the first pressing member 63 to the clamp release position when the compact disc 18 is clamped.

Effects of the Invention As described in detail above, in the disk transport mechanism according to the present invention, the mechanism is provided such that it can protrude from the player housing so as to be freely stored, carries the disk, and transports the disk in a direction substantially parallel to the disk carrying surface of the turntable and in the same direction. A first and a second carrier are provided, each of which has a disk carrying section for moving the disk in a direction substantially perpendicular to the turntable. The first and second carries are moved relative to each other in response to the movement of the disc carrier into and out of the player housing.

Because of this configuration, it is possible to freely set the relationship between the position at which the disc is delivered to and received from the disc playing means when the disc carrying part is stored, and the position where the disc is placed at the protruding position of the disc carrying part. This increases the degree of freedom in terms of performance and design, making it easier to downsize the entire disc player.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the entire disk player according to the present invention, FIG. 2 is a perspective view of each turntable and its surrounding members, and FIGS. 3 a to 3 are plan views of the second turntable and its surrounding members. , a front view, a left side view, FIGS. 4 and 5 are respectively a plan view and a side view of the internal structure of the disc player, FIG. 6 is a diagram for explaining the clamp mechanism, and FIGS. FIG. 9 is a partially detailed view of the internal structure, FIGS. 10 to 16 are diagrams for explaining the operation of the disc player, and FIGS. 17 a, b and 18 a, b are diagrams of the disc player. FIGS. 19A to 20, which show some modified examples, are diagrams for explaining the main parts of a disc player that has already been developed. Explanation of symbols of main parts, 2...Housing, 2
a... Contact portion, 3... Front panel, 3a...
Opening, 5...Disk carrying part, 6...Door, 8
... Chassis, 8a ... L-shaped guide hole, 8b ...
Parallel part, 8c... Vertical part, 8e... Bracket part, 10... Base member, 13a... First turntable, 13b... First spindle motor,
13c... Disk supporting surface, 14... Optical video disc, 15... Carriage, 16, 34...
...Guide shaft, 18...Compact disk, 19a...Second turntable, 19b...
2nd spindle motor, 19c... Disc support surface, 20... Support pin, 21... Sectoral gear, 21
a...Gear body, 21c...Intermediate member, 21d,
36, 65, 66...Coil spring, 22...
...Lever member, 22a, 44a, 44c, 44d
...Pin, 23, 38, 47, 48, 56, 71
... Gear, 24 ... Worm, 25 ... Worm wheel, 27, 28, 49 ... Pulley, 29,
50... Belt, 30, 52... Motor, 32...
...First carry, 33...Second carry, 33
e, 35a, 45e, 45f...Rack part, 35
... Slide member, 39 ... Large gear, 40 ... Small gear, 41 ... Ring spring, 44 ... Support member, 45 ... Moving member, 45a ... Cam hole, 4
5h...timing cam part, 51...small pulley,
53...shaft, 55...potentiometer,
57, 58...detection switch, 61, 62...holding member, 63...first pressing member, 64...second pressing member.

Claims (1)

[Claims] 1 A disk transport mechanism for supporting a disk to be played by a disk player and transporting it onto a disk supporting surface of a turntable within a housing of the disk player, which can protrude outside of the housing and transport the disk to the outside of the housing. a disk supporting portion for supporting the disk and moving the disk in a direction substantially parallel to the disk supporting surface of the turntable and in a direction substantially perpendicular thereto;
a drive mechanism for driving the disk carrying part, and the disk carrying part has a first carry for carrying a disk, and a second carry for carrying a disk having a diameter different from that of the disk carried by the first carry. the first carrier and the second carrier.
The carry is relatively movable in a plane substantially parallel to the disk carrying surface of the turntable, and the relative movement of the first carry and the second carry is responsive to the protruding and retracting movement of the disk carrying part with respect to the housing. A disk transport mechanism characterized by being made by