JPS61229265A - Disc player - Google Patents

Abstract

PURPOSE:To attain miniaturization and to simplify the structure by constituting a carry moving device of a rack provided to the 1st or 2nd carry, a slide member in contact with a contact part provided in a player housing, a gear meshing with the rack and a bias force providing means. CONSTITUTION:A couple of slide members 35 are provided on the lower face of the 1st carry 32 to clip the 2nd carry from the left and right, they are reciprocated within a prescribed range in forward/backward directions to the 1st carry 32, the other end of a coil spring 36 fitted to the 1st carry 32 is connected to one end to provide a bias force toward Y opposite to the arrow. The rack 35a is formed on one end of each slide member 35 with respect to its moving direction and meshes with a gear 38 provided to the lower face of the 1st carry 32. An L-shaped contact part 2a is provided to a prescribed position in the housing 2, the rear end of the slide member 35 is in contact with the contact part 2a on the way of backward movement of the disc support 5 and when the part 5 moves further backward, the 2nd carry 33 is moved backward to the 1st carry 32.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player, and more particularly to a disc player 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 are largely compatible in terms of dimensions stipulated by disc standards, such as center hole diameter, clamping area, and signal start diameter. Therefore, it was difficult to create a spindle motor that could hold both disks in common.

In addition, in order to accurately trace bits (dents) carved in micron order on the disk, it is necessary to make the rotation #Jm of the disk extremely accurate as well as the performance of the pickup. Since the playback rotation speed of an optical video disc, which has a larger outer diameter and weight than a compact disc, is relatively high, a spindle motor suitable for high-load i-speed rotation is required for rotating the optical video disc.

On the other hand, compact discs are small and lightweight, weighing about 1/10 of optical video discs, and have low playback speeds (when driven in rotation, they are easily affected by cogging and torque fluctuations, and have extremely high viscosity). It is necessary to perform rotation control.

For the above-mentioned reasons, disc players that have already been developed do not share a common spindle motor, but have dedicated spindle motors for each of the optical video disc and compact disc. Although optical video discs and compact discs have the above-mentioned differences, both use a laser beam focused on the bit through a transparent resin surface, and the information signal is read by the reflected light. Therefore, a format is adopted in which information signals from both disks are read by a single pickup.

FIG. 19 (ω shows the outline of 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 compact disc (excellent description) are shown. The second spindle motors 203 that are rotatably driven are arranged so that their rotational central axes are located in the same plane, and are movable back and forth in the direction of arrow Y and the opposite direction (for example, the front and back 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. The position 202 is the disk rotation drive position of each spindle motor, and along the plane including the disk supporting surface of the spindle motor at this position, in this case, in the arrow X direction perpendicular to the arrow Y direction and in the opposite direction (in the left-right direction of the disc player), the carriage 204
is designed to move back and forth. The carriage 204 is equipped with an optical pickup means including an objective lens 205.

FIG. 19+b+ shows the state when playing back 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 disc player having such a configuration, a large space must be provided within the player housing in order to allow the first spindle motor 202 and the second spindle motor 203 to reciprocate, making the entire disc player large. Further, the moving means for reciprocating the two spindle motors needs to have a large output, which also causes the disk player V to become larger.

Furthermore, since the relative positional dimension with the optical pickup means needs to be highly accurate, it is necessary to accurately position both spindle motors at the above-mentioned disk rotation drive position, and a positioning mechanism for this purpose is provided for each spindle motor. Each motor is provided separately, making the structure complicated.

Separately from the above discussion, disc players that have already been developed include a disc carrying mechanism that can protrude outside the player housing and that carries the disc to be played, and that transports the disc to the playing position. ing. When positioning the disc that has been placed on the disc holder outside the player housing on the disc holder surface of the spindle motor at the playing position, that is, the disc rotation drive position, the direction parallel to and perpendicular to the disc holder surface. It is carried out by moving in two directions. FIG. 20 shows a carry 208 as the main part of the disc holder included in an already developed disc player. As shown in the figure, the carrier 208 includes a first disk carrier 2 that carries optical video disks 201 with diameters of approximately 30 cm and 20 cm, respectively.
08a.

208b, and a second one carrying compact disc 206.
A disk supporting surface 208C is provided concentrically with each other. By arranging the first and second disc supporting surfaces concentrically in this manner, it is possible to give a listener an aesthetic impression when the disc supporting part protrudes outside the player housing.

However, if the color of the skin of the carrier 208 is to be used as it is, and even if the surface of the carrier is painted, the colors of the first and second disk supporting surfaces should be the same color. As a result, there is a concern that the placement position of the compact disc 206, which has the smallest diameter, on the carrier 208 may become unclear.

11 Sad 11 The present invention has been made in view of the above points, and its purpose is to facilitate miniaturization, to have a simple structure, and to carry a disc and transport it to a playing position. In addition to providing an aesthetic appearance when the disc holder protrudes from the play 17 housing, the placement position of each disc on the disc holder can be made clear, and the design of the disc holder has a greater degree of freedom. Another object of the present invention is to provide a disc player that is easy to assemble.

A disc player according to the present invention includes a playing means and a disc transport mechanism for supporting and transporting a disc to be played to a playing position, and the playing means is fixed on a predetermined support mechanism and rotates, for example, an optical video disc. a carriage that carries a pickup means and moves along a plane that includes a disk carrying portion of the first spindle motor; and a second spindle motor that rotationally drives a compact disk; The two-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 first spindle motor and the first spindle motor is determined by the radius of the disk to be supported and the first spindle motor. movement between a first position that is larger than the sum of radii of the disk supporting surface of the first spindle motor and a second position where the carriage departs from a predetermined range of a plane that includes the disk supporting surface of the first spindle motor and a movement trajectory of the carriage; The disc transport mechanism is capable of projecting to the outside of the player housing and supports a disc so as to be parallel to the disc carrying portion of the first spindle motor. a disk holder for moving the disk in a direction and a direction perpendicular thereto; and a drive mechanism for driving the disk holder; and a second carry that carries a disk to be IF on the second spindle motor, and the first carry and the second carry are parallel to the disk carrying surface of the first spindle motor. The first carry and the second carry are relatively movable in a plane, and the relative movement of the first carry and the second carry is made in response to the protruding and retracting operation of the disk holding section with respect to the play 17 housing, and the relative movement of the respective carries is A carry moving mechanism for moving the carrier is provided on one of the first and second carries so as to be movable in the relative moving direction of the two carries, has a rack portion formed along the moving direction, and is provided in the player housing. a slide member that can come into contact with a predetermined contact portion provided on the one side, another rack portion provided on the other side corresponding to the rack portion, and a gear provided on the one side that meshes with each rack portion. and a bias force applying means for applying a bias force to the first and second carries.

Table-"L"1 Hereinafter, a disc 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 disc support portion 5 can protrude outside the housing. Being beaten. However, the term "left and right" as used herein refers to the front direction indicated by the arrow Y, and the direction of the arrow X is the left direction. Further, arrow Z indicates upward. In the vicinity of the opening 3a, the opening is r! A door 6 is provided for closing. 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 member 10, screws 11, etc. are collectively referred to as a support mechanism.

A first spindle motor 13 is provided at one end of the base member 10.
is permanently installed. This first spindle motor 13 is
It is for rotating an optical video disk 14 having a diameter of approximately 30C11 or 20C1m, 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.
A guide shaft 16 provided on the base member 10 to move along a plane including the disk supporting surface 13a of No. 3.
is guided by.

Also provided on the base member 10 is a second spindle motor 19 for rotating a compact disc 18 having a diameter of approximately 12 cm. 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 means that the disk supporting surface 19a of the second spindle motor is on substantially the same plane as the disk supporting surface 13a of the first spindle motor 13, and the distance between the rotation centers of the first spindle motor 13 is The radius D2/2 of the compact disc 18 to be supported (where D2 is the diameter of the compact disc 18) and the first spindle motor 13
This position is larger than the sum of the disk supporting surface radii R1. 4ν That is, the outer circumference of the compact disc 18 placed on the second spindle motor 19 in the first position is
This is done so that it does not come into contact with the first spindle motor 13. Furthermore, the second position is 1111-! from the plane including the disk holding surface 13a of the first spindle motor 13 and the movement locus of the carriage 15. This is the J position. However, although it is different from the detached position shown in the figure, the second
The position can be on the first spindle motor 13 even if it is within a plane that includes the disk supporting surface 13a of the first spindle motor 13! It is sufficient if it is outside the diameter of the optical video disc 14 placed thereon. 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 rotation center axis of the second spindle motor.
The position is on the disk supporting surface 1 of the first spindle motor 13.
It is below the plane including 3a and on the side of the movement locus 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, and the disc player as a whole can be made smaller, especially in the two directions of the arrow. It has also become easier to make the device thinner and thinner. Note that it is also possible to set the second position below the plane including the disk holding part 13a of the first spindle motor 13 and the movement locus 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. Also,
In the illustrated second position, the direction of the central axis of rotation of the second spindle motor 19 is perpendicular to the moving direction of the disk supporting surface 13a of the first spindle motor 13 and the carriage 15, that is, substantially coincides with the direction of the arrow X. However, it is also possible to set the second position so that the rotation center axis coincides with the direction of arrow Y, for example.

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

As shown, the second spindle motor 19 has a leg member 19(b), which is rotatably attached to the base member 10 at the distal end of the leg member and via a support pin 20. . A sector gear 21 is provided near the second spindle motor 19. The fan-shaped gear 21 includes a gear body 21a, an intermediate member 21c that is separate from the gear body and rotatable around a coaxial shaft 21b with the gear body, and an intermediate member 21c interposed between the gear body and the intermediate member. Coil spring 2, which is a spring member that connects these
1d. A lever member 22 is rotatably attached at one end to the rotating end of the intermediate member 21c that is a component of the sector gear 21, and the other end of the lever member 22 is connected to the second spindle motor 19. bottle 22a at the free end of
It is pivotally connected via. Gear body 21 of sector gear 21
A gear 23 is meshed with a. This gear 23 is integrally molded with a worm wheel 25 that meshes with a worm 24. The worm 24 is connected to a pair of pulleys 27.
It is connected to the output shaft of a motor 30 via a belt 28 and a belt 29 . These gears 23 and worm 24. Worm wheel 25. Pulley 27.28. The belt 29 and the motor 30 constitute a rotational force applying means that applies rotational force to the fan-shaped gear 21. Further, the rotational force applying means, the fan-shaped gear 21, the lever member 22, etc., provide the second
A moving means for rotationally moving the spindle motor 19 is configured.

Note that the moving means and the first and second spindle motors 1
3.19, a support mechanism including a base member 10 that supports both spindle motors, a carriage 15 including an optical pickup means, and peripheral small members related thereto constitute a playing means for playing a disc. There is.

Next, a description will be given of a disc transport mechanism that includes the disc carrying section 5 described above and transports a disc to be played to a playing position.

As shown in FIGS. 1 and 4, the disk holding section 5
a first carry 32 carrying an optical video disc 14 to be placed on a first spindle motor 13;
The second carry 33 carries the compact disk 18 to be placed on the second spindle motor 19. Two circular shallow recesses 32a and 32b are concentrically formed on the upper surface of the first carry 32, into which optical video disks of approximately 301 and 20 diameters are inserted, respectively. Further, on the upper surface of the second key 33, there is a circular recess 33a into which the compact disc 18 can be inserted, and
A portion 33b is formed that can be continuous with the circular recess provided in the first carrier 32 for a cm optical video disc. In the lower part of the first carry 32, in a plane parallel to the disk supporting surface 13a of the first spindle motor 13,
In this case, a pair of left and right guide shafts 34 extending in the front-rear direction (direction of arrow Y and the opposite direction thereof) are provided, and the second carry 33 is attached to both guide shafts so as to be freely movable. Note that Figures 1 and 4 are
The state before the carry 33 moves is shown, and in this state, the circular four parts 33a formed on the second carry 33 for inserting and inserting a compact disc are the same as those provided on the first carry 32 for inserting and inserting an optical video disc. circular recess 32
It is located concentrically with respect to a and 32b. A pair of protrusions 33d are provided on both left and right sides of the second carry 33, and these protrusions 33d are engaged with 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 with respect to the first carry 32 is restricted within a predetermined range.

As is clear from FIG. 4, a pair of slide members 35 extending in the front-rear direction are provided on the lower surface of the first carry 32 so as to sandwich the second carry 33 from left and right sides, and both slide members are connected to the first carry 33. It is capable of reciprocating within a predetermined range in the front-rear direction with respect to the 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 moved rearward (
A bias force is applied in the opposite direction of arrow Y). Each slide member 35 has a rack portion 35a formed on one side thereof in the direction of movement, and extends along the direction of movement.
A gear 38 provided on the lower surface of the first carry 32 meshes with the rack portion. This gear 38 has two large and small gears 39 and 40 provided coaxially, and it is the small gear 40 that meshes with the rack portion 35a. The large gear 39 meshes with another rack portion 33e provided on both left and right sides of the second carry 33 corresponding to the rack portion 35a.

On the other hand, as also shown in FIG. 4, a letter-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 abutment part 2a during the backward movement of the disc holder 5, and as the disc holder 5 moves further rearward from this state, the second carry 3
3 is configured to move rearward with respect to the first carry 32.

7 to 9 individually show the constituent members of the gear 38 interposed between the slide member 35 and the second carry 33. 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. This allows the small gear 40 to rotate within a predetermined range relative to the large 6N1139.

Further, a flange portion 39C is provided on the extension 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. . A ring spring 41 shown in FIG. 9 is interposed between the large #JR39 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, large gear 3
9 and the small gear 40 are connected through the elastic force of the ring spring 41, and as a result, when a rotational force of more than a predetermined value is applied between the two gears, the two gears become relative to each other. Rotate.

Note that, as is clear from the above-described configuration, when the disk support portion 5 protrudes outside the housing 2, the bias of the coil spring 36 is transmitted to the second carry 33 via the slide member 35 and the gear 38, and 2 Carry is returned to the position shown in FIG.

The movement of the second carry 33 relative to the first carry 32 is controlled by the slide member 35, the gear 38, the rack part 33e formed on the second carry 33, and the coil spring 36 serving as a bias force applying means. A carry movement mechanism is configured in response to the protruding and retracting operation of the housing 2 of the housing 2.

Here, the second carry 33 is moved backward relative to the first carry 32 by appropriately adjusting the position of the contact portion 2a protruding into the housing 2 so that the rear end of the slide member 35 comes into contact with it. is set to start after the rearward drive of the disk holder 5 has started. The disk support portion 5 is manually pushed into the housing 2 from the protruding position shown in FIG. 1 to the position shown in FIG. However, by determining the timing at which the second carry 33 starts to move backward as described above, even if excessive force is applied during manual pushing, members such as the second carry 33 will not be adversely affected. It will disappear.

In this embodiment, when the disk holding part 5 protrudes outside the housing 2, that is, when the disk holding part 5 is made to carry a disk, the second carry 33
Although the position of the second carry 33 in this state is approximately at the center of the disc holder, it is also possible to position the second carry 33 near the end of the disc holder in the protruding direction.

With this configuration, compact disc 1
8 on the second carry 33, it is no longer necessary to draw out the disk holding part 5 to the outside of the housing 2, and the operability is improved.

As shown in FIGS. 4 and 5, the disk holding section 5
A pair of rectangular plate-shaped support members 4 sandwich the
4, and the disk supporting portion 5 supports the disk supporting surface 1 of the first spindle motor 13 by means of both supporting members.
It is supported so as to be movable in a direction parallel to 3a, in this case, in the front-back direction (arrow Y direction and the opposite direction).

As is clear from FIG. 5, a pair of bins 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 single-shaped guide hole 8a includes a parallel portion 8b that extends parallel to the disk holding portion 13a of the first spindle motor 13, and a parallel portion 8b extending parallel to the disk holding portion 13a of the first spindle motor 13, and a parallel portion 8b extending parallel to the disk holding portion 13a of the first spindle motor 13.
and a vertical portion 8C extending perpendicularly to the vertical direction. A pair of left and right rectangular plate-shaped moving members 45 are provided so as to sandwich the single-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).

A bottle 44a protruding from each support member 44 is attached to the chassis 8.
The cam holes 45a1. :Fm is movably engaged. The cam hole 45a has a parallel portion 45b extending in a direction parallel to the disk holding portion 13a of the first spindle motor 13, in this case, in the front-rear direction, and a parallel portion 45b extending in a direction continuous with the rear end of the parallel portion and rearward (in the direction opposite to the arrow Y direction). and an inclined portion 45c which is inclined upward (in the direction of arrow Z). That is, each moving member 4
5 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
The cam hole 45a is formed so that the cam hole 45a moves in the vertical direction, that is, in the direction perpendicular to the disk supporting surface 13a of the first spindle motor 13.

As is clear from FIG. 5, a rack portion 45e is formed at the lower end portions of the pair of moving members 45, and a gear 47 meshes with the rack portion of one of the moving members. This gear 4
7 is another gear 48 that meshes with the gear 48, and a pulley 49 and a belt 5 that are integrally formed with a gear portion 49a that meshes with the gear 48.
0 and a small pulley 51, the output shaft of a motor 52 is connected to the output shaft of the motor 52. Although not shown, the other end of the shaft 53 with the gear 47 fitted at one end reaches the vicinity of the other moving member 45, and a A gear that meshes with the rack part is fitted. That is, by rotating the tooth lI47,
The pair of left and right moving members 45 are designed to move together.

The above gears 47, 48, pulley 49, and pelt 50
The small pulley 51, motor 52, shaft 53, etc. constitute a driving means for driving the pair of moving members 45 in synchronization.

Further, the drive means, each support member 44, and the image movement member 4
5, the single-shaped guide hole 8a of the chassis 8, and the II
A drive mechanism for driving the disk holder 5 is constituted by the 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 movement start position relative to the support member 44, the disk holder 5 is locked relative to the support member. 079 means are provided. Further, so that the support member 44 is moved together with the movable member 45 in the storage direction of the disc holder, the pin 44a of the support member reaches the intersection of the parallel portion 8b and the vertical portion 8C of the single-shaped guide hole 8a. A locking/releasing means locks the supporting member to the moving member 45, releases the locked state when the bin 44a reaches the intersection, and locks the supporting member 44 to the chassis 8 only in the storing direction. It is provided.

A drive machine for driving the disk holding section, which includes these locking means and locking/unlocking means, the disk holding section 5, the carry moving mechanism (described above) consisting of the slide member 35, etc., the chassis 8, the moving member 45, etc. (mentioned above) and peripheral small members connected to them constitute a disc transport mechanism that transports the disc to be played to the performance position, that is, onto each spindle motor.

As shown in FIG. 5, another rack section 45f is formed at the lower end of the moving member 45 behind the rack section 45e. An m wheel 56 for operating a rotary potentiometer 55 is meshed with this rack portion 45f. Note that the potentiometer 55 and the gear 56 are attached to a bracket portion 8e that projects from the lower end of the chassis 8. Although not shown, the control circuit that controls the operation of the disc plate 17 includes a comparator that compares the terminal voltage of the potentiometer 55 with a reference voltage. As also shown in FIG. 5, the front and rear ends of the movable member 45 are respectively engaged with the front end portions of the chassis 8, thereby starting the movement of the movable member, and thus the disk supporting portion 5. A pair of detection switches 57 and 58 are attached to detect the position and the end position of movement. The potentiometer 55, the comparator (described above), the detection switches 57, 58, and the like constitute a position detecting means for detecting the position of the disk holder 5.

Although it is possible to detect the position of the moving member 45, and hence the disk holder 5, using only the potentiometer 55, the position detection accuracy of the disk holder 5 can be improved by using the detection switches 57 and 58 together as described above. In addition to improving the performance, the configuration of the control circuit described above can also be simplified. Further, although the gear 56 for operating the potentiometer 55 is meshed with the rack portion 45 of the moving member 45, it is also possible to have a configuration in which the gear meshes with the gear 47 or the gear 48. Although a rotary type potentiometer is used in , it is also possible to use a linear displacement type so-called slide volume.

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

As shown in FIGS. 4 and 5, a pair of substantially rectangular plate-shaped holding members 61 and 62 are provided within the housing 2, spaced apart from each other in the front and rear, and extending in the left and right directions. Each of the holding members 61 and 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 substantially perpendicular to the disk supporting surface 13a of the first spindle motor 13. However, the arcuate notches 61a, 62a formed at the rear end of each holding member 61, 62 fit with the other bottle 44d protruding from the support member 45 with a small gap, and as a result, The downward swinging of the holding members 61 and 62 is restricted within a predetermined range to support and support the bottle 44c.
It is constructed so that it can perform a pivoting motion. As shown in FIG. 6, on the lower surface of each of the holding members 61 and 62, a disk-shaped first restraint member is provided which cooperates with one of the first and second spindle motors 13 and 19, respectively, to perform a disk clamping action. The member 63 and the second pressing member 64 are each rotatably attached. As shown in FIG. 5, a coil spring 6 is attached to the rear end of each holding member 61 and 62.
5.66 are each connected. Each of the coil springs acts to bias both holding members 61.62 in a direction in which the first and second pressing members e3:64 approach the first and second spindle motors 13.19, respectively.

As shown in FIG. 5, the holding member 6 located at the rear
A roller 62b is provided at the side end of the moving member 45, and the O-roller 62b engages with a timing cam portion 45h formed at the upper end of the moving member 45. The shape of the timing cam portion 45h and the cam hole 45 provided in the moving member 45
The timing of attaching and detaching the first and second suppressing members 63.64 to the first and second spindle motors 13.19 is set by appropriately determining the shape of a and the moving peak of the moving member. That is, the first and second suppressing members are individually attached to and detached from the first and second spindle motors 13.19. Note that, as is clear from the above description, the first and second suppressing members 63.
No special driving source is provided for moving the holding members 61 and 64 together with the holding members 61 and 62, and this moving operation is performed by applying driving force from the disk transport mechanism described above.

The above-mentioned first and second pressing members 63, 64, holding members 61, 62 that hold these members, coil springs 65, 66 as biasing means, etc., are carried to the playing position, that is, onto each spindle motor. A clamp mechanism is configured to clamp the disk.

Next, the operation of the disc player configured as described above will be explained in the first
The performance procedure will be briefly explained with reference to FIGS. 0 to 16.

First, the case where the optical video disc 14 (see FIG. 2) is played will be explained. As shown in FIG. 1, 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 a process completely opposite to the retracting operation described below, and therefore will not be described in detail.

Once the optical video disc has been placed on the disc carrier 5, the disc carrier 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, and the motor 52 shown in FIG. 5 starts rotating. At this time, the disk holding section 5 is attached to the supporting member 4.
4 becomes locked by the locking means and begins to be drawn into the body. Therefore, as shown in FIG. 12, the disk supporting portion 5 moves rearward (in the direction opposite to the arrow Y) and is completely housed within the housing 2.

Further, as shown in FIGS. 10 and 11, the second carry 33 is moved to a position corresponding to the second spindle motor 19. Also, at this time, the diameter of the disc to be played is determined by a determining means (not shown).

When it is determined that the disk being conveyed is the optical video disk 14, the moving member 45 is further driven backward by a predetermined distance, as shown in FIG. Therefore,
The disc carrier 5 is lowered 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 the disc can be played.

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

When a detection switch (not shown) detects that the performance has ended and the carriage 15 has reached its movement limit position,
The key 11 ridge 15 and the first spindle motor 13 are stopped, and at the same time, the motor 52 starts a reverse operation. Therefore, as mentioned before, the disc 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 disc support part 5 moves forward and backward with respect to the support member 44. It becomes free and enters the state shown in FIGS. 4 to 6. Thereafter, the optical video disc 14 is recovered by manually pulling out the disc holder 5.

The case where the disc to be played is the compact disc 18 (see FIG. 2) will be explained. The operation of the disc transport mechanism is similar to that for the optical video disc 14 up to the state shown in FIG.
8, the moving member 45 is driven further backward than the state shown in FIG. 13, and reaches the state shown in FIG. 15. The compact disc 18 is thus clamped on the second spindle motor 19, as shown in FIG. Note that the second
Movement of the spindle motor 19 is performed in response to a signal from the above-mentioned determining means.

In addition, in the disc player, the first carry 3 of the second carry 33 carrying the compact disc 18 is
The movement relative to the second carry 33 is performed by linear reciprocating motion, but as shown in FIG. 17 (ω, (b)) and FIG. It is also possible to adopt a configuration in which the second carry is driven by adding the 611171 and the rack member 72 to this member.

Further, in this 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 18 The first pressing member 63 is also set at the clamp position; however, the present invention is not limited to this configuration. It is also possible to provide a configuration in which the first pressing member 63 is moved to the clamp release position when the compact disc 18 is clamped, by providing a timing cam portion 45h.

Effects of the Invention As detailed above, the disc player according to the present invention includes a first spindle motor that is identified on a predetermined support mvtt and rotationally drives, for example, an optical video disc, and a first spindle motor that carries a pickup means and that is mounted on a predetermined support mvtt. It has a carriage that moves along a plane that includes a disk carrying surface of the motor, and a second spindle motor that rotationally drives a compact disk, the second spindle motor having a disk carrying surface that is opposite 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 is movable between a predetermined range of a plane including the disk holding 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 second spindle motor is provided.

Therefore, compared to a disc player in which all of the spindle motors are moved, the space provided within the player housing for the movement of the spindle motors is smaller, making it easier to downsize the disc player as a whole. It has become.

Further, the moving means for moving the second spindle motor can 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 disc player, it is easier to reduce the size of the entire disc player, and the structure is simple.

Furthermore, in the disc player according to the present invention, a disc holder that can protrude outside the player housing and that supports the disc and moves the disc in a direction parallel to and perpendicular to the disc carrying surface of the first spindle motor is provided. and a drive mechanism for driving the disk holder, and the disk holder has a first carry that carries the disk placed on the M1 spindle motor. and a second carry carrying a disk to be placed on the second spindle motor, and the first carry and the second carry are arranged in a plane parallel to the disk supporting surface of the first spindle motor. The first carry and the second carry are relatively movable, and the relative movement of the first carry and the second carry is performed in response to the protruding and retracting operation of the disc carrying part with respect to the player housing. In other words, the disc holder is housed within the player housing so that the first carry and the second carry are positioned concentrically when the disc holder protrudes outside the player housing. At times, both 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 spaced apart from each other in the direction of movement of the pickup means, when the disk holding section 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. In addition, since the carries that support each disk are independent, it is extremely easy to color code each carry, making it possible to clarify the placement position of each disk on the disk holder, and to This increases the degree of freedom in design.

In addition, in the disc player according to the present invention, there is a key 1 for relative movement of each carry! A carry moving mechanism is provided on one of the first and second carries so as to be movable in a direction of relative movement of both carries, a rack portion is formed along the moving direction, and a predetermined rack portion is provided in the player housing. a slide member that can come into contact with the abutting portion; another rack portion provided on the other side corresponding to the rack portion; a gear provided on the one side and meshing with each of the rack portions; and bias force applying means for applying bias force to the first and second carries.

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 entire disc player. In addition, since this carry moving camera structure is compactly housed within the disk holding section that includes the first and second carries, it is easier to downsize and has good assembly efficiency when assembling the disk player. This is the result.

[Brief explanation of the drawing]

Fig. 1 is a perspective view, not showing the entire disc player according to the present invention, Fig. 2 is a perspective view of each spindle motor and its peripheral members, and Fig. 3(a) to C) is a perspective view of the second spindle motor and its peripheral parts. 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 R structure; Figures 7 (ω to 9 are partial detailed views of the internal structure described above, Figures 10 to 16 are diagrams for explaining the operation of the disc player, and Figure 17 (ω, (b)
and FIG. 18 (ω, crest) are diagrams showing a partial modification of the disc player, and FIGS. Explanation of symbols of main parts 2...Housing 2a...Contact portion 3...Front panel 3a...Opening 5...Disc Carrying part 6... Door 8... Chassis 8a... L-shaped guide hole 8b... Parallel portion 8G... Vertical portion 8e. ... Bracket portion 10 ... Base member 13 ... First spindle motor 13a ...
... Disc holding surface 14 ... Optical video disc 15 ...
・Ki 17 Ritsuji 16.34...Guide shaft 18...
・Compact disk 19...Second spindle motor 19a...
... Disk supporting surface 20 ... Support bin 21 ... Fan-shaped gear 21a ...
Gear body 21C...Intermediate members 21d, 36, 65.66...Coil spring 22...Lever member 22a, 44a, 44c, 44d--Bin 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 33e, 35a, 45e, 45r ---------
Rack portion 35...Slide member 39...Large gear 40...Small gear 41...Ring spring 44...Support member 45... ...Moving member 45a...Cam hole 45h...Timing cam portion 51...Small pulley 53...Shaft 55...Potentiometer 57.58...Detection switch 61.62...Holding member 63...First pressing member 64...Second suppression member

Claims (3)

[Claims] (1) The playing means includes a housing, a playing means provided in the housing, and a disc conveying mechanism that carries a disc to be played and transports it to a playing position, and the playing means includes a supporting mechanism and a playing means provided on the supporting mechanism. a first spindle motor fixedly mounted; a carriage carrying a pickup means and moving along a plane including a disk carrying surface of the first spindle motor; and a disk carrying surface having a disk carrying surface of the first spindle motor. a first position located on substantially the same plane 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; A second spindle motor movable between a predetermined range of a plane including a disk supporting surface of the spindle motor and a second position away from a movement locus of the carriage, and a moving means for moving the second spindle motor. The disk transport mechanism includes a disk carrier that can protrude outside the housing and that supports the disk and moves the disk in a direction parallel to and perpendicular to the disk carrying surface of the first spindle motor. and a drive mechanism for driving the disk holding section,
The disk holding unit has a first carry for carrying a disk to be placed on the first spindle motor, and a second carry for carrying a disk to be placed on the second spindle motor, and the second carry carries a disk to be placed on the second spindle motor. 1 carry and 2nd
The carry is relatively movable in a direction parallel to the disk carrying surface of the first spindle motor, and the relative movement of the first carry and the second carry is caused by the protruding and retracting movement of the disk carrying part with respect to the housing. The carry moving mechanism is provided on one of the first carry and the second carry so as to be movable in a direction of relative movement between the two carries, and a rack portion is formed along the direction of movement. and a slide member that can come into contact with a predetermined contact portion provided in the housing, another rack portion provided on the other side corresponding to the rack portion, and a slide member provided on the one side and the rack portion. What is claimed is: 1. A disc player comprising: a gear that meshes with the first carry and the other rack; and bias force applying means for applying a bias force to the first carry and the second carry. (2) The disc player according to claim 1, wherein the relative movement of the first carry and the second carry is performed after the start of driving of the disc holder. (3) The outer diameter of the disk carried by the second spindle motor is smaller than the outer diameter of the disk carried by the first spindle motor, and the position of the second carry when the second carry carries the disk is 3. The disc player according to claim 1, wherein the disc player is set near an end in a protruding direction of the disc holder.