JPH0518192B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a disc player, and more particularly to 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. Spindle motors are used to rotate these discs, but optical video discs and compact discs differ greatly in the dimensions specified by the disc standards, such as center hole diameter, clamping area, and signal start line. Therefore, it has been difficult to realize a spindle motor that can hold both disks in common. In addition, in order to accurately trace the pits (dents) carved in micron 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.When driving them in rotation, they are susceptible to cogging and torque fluctuations, and 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 disc players and compact discs have the above-mentioned differences, they both focus a laser beam on a pit through a transparent resin surface 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. 17a schematically shows the main parts of a disc player that has already been developed. As shown in the figure, a first spindle motor 202 that rotationally drives an optical video disc 201 and a second spindle motor 203 that rotationally drives a compact disc (described later) are arranged so that their rotational central axes are located within the same plane. , and are capable of reciprocating in the direction of arrow Y and in the opposite direction (for example, in the front-rear direction of the disc player). Although not shown, a moving means for moving the first spindle motor 202 and the second spindle motor 203 is provided. In addition, Figure 17a
The position of the first spindle motor 202 shown in FIG. The carriage 204 is configured to reciprocate in the direction of arrow X and the opposite direction (left-right direction of the disk player). The carriage 204 houses an optical pickup means including an objective lens 205.

FIG. 17b shows the state when playing the compact disc 206, in which the second spindle motor 203 has moved to the disc rotation drive position, and the first spindle motor 202 has been moved away from this position. There is.

In a disk player with such a configuration, the first
In order to allow the spindle motor 202 and the second spindle motor 203 to reciprocate, a large space must be provided within the player housing, making the entire disk player large. Also, 2
The moving means for reciprocating the two spindle motors also needs to have a large output, which also causes the disk player to become larger.
Furthermore, since the relative positional dimension with the optical pickup means needs to be highly accurate, both spindle motors must be accurately positioned at the disk rotation drive position, and a positioning mechanism for this purpose is attached to each spindle motor. Each motor is provided separately, resulting in a complicated structure.

Apart from the above, already developed disc players include a disc carrying mechanism that can protrude outside the player housing and that transports the disc to the playing position, including a disc carrying part that carries the disc to be played. ing. When positioning the disk placed on the disk holding part outside the player housing on the disk holding surface of the spindle motor at the playing position, that is, the disk rotation drive position, the direction parallel to and perpendicular to the disk holding surface is determined. Transport is performed by moving in two directions. FIG. 18 shows a carry 208 as the main part of the disk carrier included in an already developed disk player. As shown, the carrier 208 includes optical video disks 20 approximately 30 cm and 20 cm in diameter.
1, the first disk supporting surfaces 208a,
208b and a second disk carrying surface 208c for carrying the compact disk 206 are each provided concentrically. By arranging the first and second disk supporting surfaces concentrically in this way, it is possible to give a listener a sense of beauty when the disk supporting section protrudes outside the player housing. However, if the skin color of the carry 208 is to be used as it is, and even if the surface of the carry is painted, the colors of the first and second disk supporting surfaces should be the same color. Ori,
As a result, there was a concern that the placement position of the compact disk 206, which has the smallest diameter, on the carrier 208 would become unclear.

Summary of the Invention The present invention has been made in view of the above-mentioned points, and its purpose is to facilitate miniaturization, to have a simple structure, and to carry a disk and transport it to a performance position. It is possible to obtain an aesthetic appearance when the disk carrying part of the disc holder protrudes from the player housing, and also to make it possible to clearly set the placement position of each disc on the disc holder, and to have a greater degree of freedom in designing the disc holder. To provide a disk player with reliable disk conveyance and good assemblability.

A disc player according to the present invention includes a playing means and a disc transport mechanism for carrying and transporting a disc to be played to a playing position, and the playing means is fixed on a predetermined support mechanism to play, for example, an optical video disc. It has a first spindle motor that rotationally drives a compact disk, a carriage that carries a pick-up means and moves along a plane that includes a disk carrying surface of the first spindle motor, and a second spindle motor that rotationally drives a compact disk. ,
The second spindle motor has a disk supporting surface located on substantially the same plane as the disk supporting surface of the first spindle motor, and the distance between the rotation centers of the second spindle motor and the first spindle motor is equal to the radius of the disk to be supported and the first spindle motor. The carriage is movable between a first position that is larger than the sum of radii of the disk carrying surfaces of the spindle motors, and a second position that is separated from a predetermined range of a plane that includes the disk carrying surfaces of the first spindle motor and the movement locus of the carriage. The disk transport mechanism is configured to be able to protrude to the outside of the player housing and support the disk so as to move the second spindle motor in parallel with the disk supporting surface of the first spindle motor. and a drive mechanism for driving the disk support, the disk support to be placed on the first spindle motor. a first carry for carrying a disk; and a second carry for carrying a disk to be placed on the second spindle motor, the first carry and the second carry being on the disk carrying surface of the first spindle motor. the first carry and the second carry are relatively movable in a plane parallel to A carry moving mechanism for performing the movement is arranged to extend in the direction of relative movement of the first and second carries, is provided movably with respect to the player housing in a direction perpendicular to the direction of extension, and is arranged to extend in the direction of relative movement of the first and second carries. a rack member having a rack portion formed therein; another rack portion provided on one of the first and second carries in correspondence with the rack portion; and each rack portion provided on the other with respect to the first carry. It is characterized by having a gear that meshes with the gear.

Embodiment Hereinafter, a disk player 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 by screws 11 or the like. These base members 10 and screws 11
etc. are collectively referred to as the support mechanism. A first spindle motor 13 is fixed to one end of the base member 10 . This first spindle motor 13 drives an optical video disc 14 with a diameter of about 30 cm or 20 cm.
It is intended for rotationally driving a motor, and is suitable for high-load, high-speed rotation. A carriage 15 carrying an optical pickup means is disposed behind the first spindle motor 13, and is mounted on the base member 10 in order to move along a plane including the disk carrying surface 13a of the first spindle motor 13. It is guided by a guide shaft 16 provided at.

The base member 10 is also provided with a second spindle motor 19 for rotating a compact disk 18 having a diameter of approximately 12 cm. The second spindle motor 19 is movable between a first position shown by a solid line in FIG. 2 and a second position shown by a two-dot chain line. This first position is
Disk carrying surface 19a of the second spindle motor
is the first spindle motor 13 and the disk carrying surface 13
The compact disc 18 radius D ₂ /2 (where D ₂ is the diameter of the compact disc 18) and the first This position is larger than the sum of the radius R ₁ of the disk supporting surface of the spindle motor 13 . That is, the outer periphery of the compact disk 18 placed on the second spindle motor 19 in the first position is prevented from coming into contact with the first spindle motor 13. Further, the second position is a position away from the plane including the disk carrying surface 13a of the first spindle motor 13 and the movement locus of the carriage 15. However, although the second position is different from the detached position shown in the figure, even if it is within a plane including the disk supporting surface 13a of the first spindle motor 13,
It is sufficient that the diameter is outside the diameter of the optical video disk 14 placed on the first spindle motor 13. As is clear from the figure, the movement of the second spindle motor 19 is performed by rotational movement that changes the direction of the central axis of rotation of the second spindle motor. The second position is below the plane including the disk supporting surface 13a of the first spindle motor 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 the arrow Z. It is becoming easier to make devices smaller and thinner. Note that it is also possible to set the second position below the plane including the disk holding surface 13a of the first spindle motor 13 and the movement trajectory of the carriage 15. In this case, the second position can be set below the movement trajectory of the carriage 15. It becomes easier to downsize. Further, in the illustrated second position, the rotation center axis of the second spindle motor 19 is aligned with the disk supporting surface 13a of the first spindle motor 13 and the carriage 1.
Although the second position is perpendicular to the movement direction of 5, that is, substantially coincident with the direction of arrow X, it is also possible to set the second position so that the central axis of rotation coincides with, for example, the direction of arrow Y.

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

As shown, the second spindle motor 19
has a leg member 19b, and the base member 1 is connected to the base member 1 at the distal end of the leg member and via a support pin 20.
0 so that it can rotate and move. A sector gear 21 is provided near the second spindle motor 19. The sector gear 21 is a gear body 21a.
, an intermediate member 21c that is separate from the gear body and rotatable about the same axis 21b as the gear body, and a spring that is interposed between the gear body and the intermediate member and connects them. It consists of a coil spring 21d which is a 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 fan-shaped gear 21, and the other end of the lever member is freely attached to the second spindle motor 19. It is pivotally attached to the end via a pin 22a. A gear 23 meshes with the gear body 21a of the sector gear 21. This gear 23 is integrally molded with a worm wheel 25 that meshes with a worm 24. The worm 24 is connected to an output shaft of a motor 30 via a pair of pulleys 27 and 28 and a belt 29. These gears 2
3. The worm 24, the worm wheel 25, the pulleys 27, 28, the belt 29, and the motor 30 constitute a rotational force applying means for applying 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 spindle motor 19.

The moving means, the first and second spindle motors 13, 19, a support mechanism including a base member 10 that supports both spindle motors, a carriage 15 including an optical pickup means, and peripheral small parts related thereto. These members constitute a playing means for performing disk performances.

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 FIGS. 1 and 4, the disk carrying section 5 includes a first carry 32 carrying an optical video disk 14 to be placed on a first spindle motor 13, and a first carry 32 carrying an optical video disk 14 to be placed on a first spindle motor 13, and a first carry 32 carrying an optical video disk 14 to be placed on a first spindle motor 13, The second carrier 33 carries the compact disc 18 to be placed on the disc. 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 disk 18 can be inserted.
and a portion 33b that can be continuous with the circular recess provided in the first carrier 32 for an optical video disc with a diameter of 20 cm. 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 13a of the first spindle motor 13, in this case, in the front-rear direction (in the 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 carrier 33 moves, and in this state, the circular recess 33a formed in the second carrier 33 for inserting a compact disk is inserted into the first carrier. Circular recesses 32a, 32 for fitting an optical video disk provided in 32
It is located concentrically with respect to b. A pair of protrusions 33d are provided on both left and right sides of the second carry 33, and these protrusions 33d engage four locking parts 32d and 32e, two each, protruding from the lower surface of the first carry 32. By doing so, the movement of the first carry 33 relative to the first carry 32 is restricted within a predetermined range.

As is clear from FIG. 4, the housing 2 includes a second carrier 33 for the first carrier 32
A rack member 35 that extends in the direction of movement, that is, the front-back direction, and has a rack portion 35a formed at the right end along the direction of extension, is provided so as to be movable in a direction perpendicular to the direction of extension, in this case, in the vertical direction. . Gear 3 provided on the lower surface of the first carrier 32
8 is engaged with the rack part. This gear 38 has two large and small gears 39 and 40 provided coaxially, and it is the large gear 39 that meshes with the rack portion 35a. The small gear 40 meshes with another rack portion 33e provided on the left side of the second carry 33 in correspondence with the rack portion 35a.

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.

The rack member 35 described above, the gear 38, and the second
The rack portion 33e formed on the carry 33 allows the second carry 3 to be attached to the first carry 32.
A carry movement mechanism is constructed that moves the disc holder 5 according to the protruding and retracting operation of the disk holder 5 with respect to the housing 2.

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, the compact disk 18
When carrying the disk on the second carrier 33, it is no longer necessary to draw out the disk carrying part 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. in a direction parallel to the disk supporting surface 13a of the first spindle motor 13;
In this case, it is supported so as to be movable in the front-rear direction (in the direction of arrow Y and the opposite direction). As is clear from FIG. 5, a pair of pins 44a are protruded from the side surface of the support member 44 and are spaced apart in the front-rear direction. It can be moved freely to dry. That is, the support member 44 is adapted to move along the L-shaped guide hole.
The L-shaped guide hole 8a is connected to the first spindle motor 13.
It consists of a parallel portion 8b extending parallel to the disk carrying surface 13a, and a vertical portion 8c continuing from the rear end of the parallel portion and extending perpendicularly to the disk carrying surface 13a. 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-back direction (in 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 is arranged in a direction parallel to the disk supporting surface 13a of the first spindle motor 13;
In this case, the parallel portion 45b extending in the front-rear direction
and a sloped portion 45c that is continuous with the rear end of the parallel portion and slopes upward (direction of arrow Z) toward the rear (counter-direction of arrow Y). That is, when each movable member 45 moves in the front-rear 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, the disk support surface 13a of the first spindle motor 13. The cam hole 45a is formed to move in a direction perpendicular to the cam hole 45a.

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 is configured to drive 5 in synchronization. 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 movable 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 lock means and lock/release means, the disk carrying part 5, the carry moving mechanism (described above) comprising the rack 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 conveying mechanism that conveys the disk to be played to the playing position, that is, onto each spindle motor.

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, near both front and rear ends of the chassis 8,
A pair of detection switches 57 and 58 are installed, which detect the movement start position and movement end position of the movement member 45, and therefore the disk carrier 5, by engagement of the front and rear ends of the movement member 45, respectively. ing. The potentiometer 55, the comparator (described above), the detection switches 57, 58, and the like constitute a position detection means for detecting the position of the disk holding section 5.

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 5
By using 7 and 58 in combination, the accuracy of detecting the position of the disk holder 5 can be improved, and the configuration of the above-mentioned control circuit can also be simplified. Also, a gear 56 for operating the potentiometer 55
is meshed with the rack portion 45f of the moving member 45, but 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 swing direction of each holding member is approximately perpendicular to the disk supporting surface 13a of the first spindle motor 13. However, each holding member 61, 6
Arc-shaped notches 61a, 6 formed at each rear end of 2
2a is another pin 44 protruding from the support member 45.
d with a slight gap, thereby restricting the downward swinging of the holding members 61 and 62 within a predetermined range, and allowing swinging motion using the pin 44c as a fulcrum. It is configured. As shown in FIG. 6, the lower surfaces of each holding member 61 and 62 are provided with first and second spindle motors 13 and 19.
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. 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 second 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 gum 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
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 from the disk 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 disk transported to the playing position, that is, onto each spindle motor.

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 FIGS. 1 and 4, the disc holder 5 is completely projected out of the housing 2, and an optical video disc is placed at a predetermined position on the disc holder. It should be noted that the operation of protruding the disk holder 5 out of the housing is performed by following the reverse process 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. 5 and 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 causes the locking member to enter a locked state and begin to be pulled in integrally. Therefore, as shown in FIG. 12, the disk carrier 5 moves rearward (in the direction of arrow Y) and is completely accommodated within the housing 2. In addition to the above-mentioned manual push-in, the second
The carry 33 is moved to a position corresponding to the second spindle motor 19. Also, at this time,
A determining means (not shown) determines the diameter of the disc to be played.

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 spindle motor 13 and 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 13 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 13 are stopped, and at the same time, the motor 52 starts its reverse 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 spindle motor 19
It is clamped at the top. In addition, Fig. 14 and 1
The movement of the second spindle motor 19 shown in FIG. 6 is performed in response to a signal from the above-mentioned determining means.

Effects of the Invention As described in detail above, in the disc player according to the present invention, the first spindle motor is fixed on a predetermined support mechanism and rotatably drives, for example, an optical video disc, and the first spindle motor supports a pick-up means. It has a carriage that moves along a plane that includes the disk carrying surface of the motor, and a second spindle motor that rotationally drives the compact disk, the second spindle motor having a disk carrying surface that is parallel to the disk carrying surface of the first spindle motor. a first position located substantially on the same plane as the first spindle motor and in which the distance between the centers of rotation with the first spindle motor is larger than the sum of the radius of the disk to be supported and the radius of the disk supporting surface of the first spindle motor; 1, the carriage is movable between a predetermined range of a plane including the disk supporting surface of the spindle motor and a second position where the carriage departs from the movement locus of the carriage;
A moving means for moving the spindle motor is provided.

Therefore, compared to a disk player in which all of the installed spindle motors are moved, the space provided within the player housing for moving the spindle motors is smaller, and the overall size of the disk player can be reduced. It's getting easier.

Further, the moving means for moving the second spindle motor can also be of low output and small size, and furthermore, the positioning mechanism for positioning the second spindle motor at the first position, that is, the disk rotation drive position is also required. Since it is only necessary to provide one, the overall size of the disk player can be further reduced.
Moreover, the structure is simple.

Furthermore, in the disk player according to the present invention, a disk that can protrude outside the player housing, supports the disk, and moves the disk in a direction parallel to and perpendicular to the disk supporting surface of the first spindle motor. It has a disk transport mechanism including a carrying part and a drive mechanism for driving the disk carrying part, and the disk carrying part has a first carry carrying a disk to be placed on the first spindle motor, and a drive mechanism for driving the disk carrying part. 2
and a second carry carrying a disk to be placed on the spindle motor, the first carry and the second carry being relatively movable in a plane parallel to the disk carrying surface of the first spindle motor. , the relative movement of the first carry and the second carry is performed in response to the protrusion and retraction movement of the disk carrier with respect to the player housing. That is, the first carry and the second carry are positioned concentrically when the disk carrying part protrudes outside the player housing;
Furthermore, when the disk carrier is housed in the player housing, both of the carries can be moved to positions corresponding to the first and second spindle motors, respectively.

In this way, even though the spindle motors are disposed apart from each other in the direction of movement of the pick-up means, when the disk carrier protrudes outside the player housing, the two carries are positioned concentrically. As a result, it is possible to give a sense of beauty to the listener. Also,
Since the carries that carry each disk are independent, it is extremely easy to color code each carry, which makes it possible to clarify the placement position of each disk on the disk holder, and to design the disk holder. This increases the degree of freedom above.

Further, in the disc player according to the present invention, the carry movement mechanism for relative movement of the respective carries is arranged to extend in the direction of relative movement of the first and second carries, and extends with respect to the player housing. a rack member provided movably in a direction perpendicular to the direction and having a rack portion formed along the direction of extension; and a rack member provided in one of the first and second carriers corresponding to the rack portion. and a gear provided on the other side of the rack and meshes with each of the racks.

That is, the structure is such that the relative movement of the two carries is performed using part of the driving force of the disk transport mechanism. Therefore, there is no need to provide a special drive source for performing the relative movement, and it is easy to downsize the disk player as a whole. Further, since the relative movement of the two carries is performed through highly reliable members such as the rack part of the rack member, a gear that meshes with the rack part, and another rack part that meshes with the gear, the carrier The operation of the disks and therefore the transport and positioning of the disks is ensured. Furthermore, since the carry is configured to be moved only by the simple meshing of the two racks and gears, no matter where the carry stops, the load remains applied to each of the racks, etc. There is no possibility of deformation of the member due to the load.

Furthermore, the above-mentioned gear is a so-called double gear consisting of two gears each meshing with each of the above-mentioned rack parts and having a different number of teeth, so that the relative moving speed of the carry can be increased (decreased) compared to the protruding and retracting speed of the disk carrying part. ) When configuring a speed increasing (decreasing) mechanism that
If the movement stroke of the carry is constant, the speed increase (reduction) ratio can be reduced by increasing the length of the rack portion of the rack member fixed to the player housing. Therefore, the resistance force associated with the movement of the carry can be kept small, and the power source can also be small.

Further, since the carry moving mechanism is compactly housed in the disk carrying member including the first and second carries, it is easier to downsize the disk player, and the disk player is easily assembled. It's getting old.

[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 spindle motor and its surrounding members, and FIGS. 3 a to 3 c are plan views of the second spindle motor 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, FIGS. 7a to 9 are partial detailed diagrams of the internal structure, and FIGS. 10 to 16 are diagrams for explaining the operation of the disc player. Figure 17a to 1
FIG. 8 is a diagram 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 portion, 8c... Vertical portion, 8e... Bracket portion, 10... Base member, 13... First spindle motor, 13a... Disk supporting surface, 14...
...Optical video disc, 15...Carriage,
16, 34... Guide shaft, 18... Compact disk, 19... Second spindle motor,
19a...Disk supporting surface, 20...Support pin,
21...Sector gear, 21a...Gear body, 21c
...Intermediate member, 21d, 65, 66...Coil spring, 22...Lever member, 22a, 44
a, 44c, 44d...pin, 23, 38, 4
7, 48, 56, 71... Gear, 24... Worm, 25... Worm wheel, 27, 28, 4
9...Pulley, 29,50...Belt, 30,5
2... Motor, 32... First carry, 33...
2nd carry, 33e, 35a, 45e, 45f
... Rack part, 35 ... Rack member, 39 ... Large gear, 40 ... Small gear, 41 ... Ring spring, 44 ... Supporting member, 45 ... Moving member, 45
a...Cam hole, 45h...Timing cam part, 5
1... Small pulley, 53... Shaft, 55... Potentiometer, 57, 58... Detection switch,
61, 62... Holding member, 63... First pressing member, 64... Second pressing member.

Claims (1)

[Scope of Claims] 1. A disc transport mechanism that carries a disc to be played and transports it to a performance position;
The playing means includes a support mechanism, a first spindle motor fixedly mounted on the support mechanism, a carriage carrying a pickup means and moving along a plane including a disk carrying surface of the first spindle motor, and a disk. The supporting surface is located on substantially the same plane as the disk supporting surface of the first spindle motor, and the distance between the centers of rotation with the first spindle motor is the radius of the disk to be supported and the radius of the disk supporting surface of the first spindle motor. a second spindle motor that is movable between a first position that is greater than the sum of the above and a second position that is separated from a predetermined range of a plane including a disk carrying surface of the first spindle motor and a movement trajectory of the carriage; a moving means for moving the second spindle motor, and the disk transport mechanism is capable of projecting to the outside of the housing and supports the disk in a direction parallel to and parallel to the disk supporting surface of the first spindle motor. The disk carrier has a disk carrier for moving the disk in a vertical direction, and a drive mechanism for driving the disk carrier, and the disk carrier supports a disk to be placed on the first spindle motor. the first carrier, and the second carrier.
a second carry carrying a disk to be mounted on the spindle motor, the first carry and the second carry being relatively movable in a direction parallel to the disk carrying surface of the first spindle motor; a carry moving mechanism for moving the first carry and the second carry relative to each other in response to a protruding and retracting operation of the disk carrying section with respect to the housing; a rack member disposed to extend in the moving direction, movable in a direction perpendicular to the extending direction with respect to the housing, and having a rack portion formed along the extending direction; and the first carrier and the second carrier. A disk player characterized in that it has another rack part provided on one of the racks corresponding to the rack part, and a gear provided on the other side of the rack part and meshes with the rack part and the other rack part. . 2. The outer diameter of the disk supported by the second spindle motor is smaller than the outer diameter of the disk supported by the first spindle motor, and the position of the second carry when causing the second carry to carry the disk is determined by the disk. Claim 1, characterized in that the support part is set near the end in the protruding direction.
Disc player as described in section.