JP2633518B2 - Disk player - Google Patents

Description

Description: TECHNICAL FIELD 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 capable of playing 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 disc standards such as the center hole diameter, clamping area, and signal start diameter. Therefore, it has been difficult to realize a spindle motor capable of holding both disks in common. In addition, in order to accurately trace pits (dents) carved in micron order on the disk, it is necessary to control the rotation of the disk extremely accurately together with the performance of the pickup. Since the optical video disk having a larger outer diameter and a larger weight than a compact disk has a relatively high reproduction rotation speed, a spindle motor that rotates the optical disk is required to be suitable for high-load high-speed rotation.

On the other hand, compact discs, which are about 1/10 the weight of optical video discs and are small and light, have a low playback speed, and when they are driven to rotate, they are susceptible to cogging and torque fluctuations, resulting in extremely accurate rotation control. Need to do.

For the above reasons, disc players that have already been developed do not share a spindle motor,
A dedicated spindle motor is provided for each of the optical video disk and the compact disk. Although the optical video disk and the compact disk have the above-mentioned differences, both focus the laser beam on the pit via the transparent resin surface and read the information signal by the reflected light. In this case, a single pickup reads information signals from both disks.

FIG. 19 (a) shows an outline of a main part of a disc player which has already been developed. As shown, a first spindle motor 2 for rotating and driving an optical video disc 201
02 and a second spindle motor 203 for rotationally driving a compact disk (described later) are arranged such that their respective rotation center axes are located in the same plane, and are respectively in the direction of the arrow Y and in the direction opposite thereto (for example, of a disk player). In the front-rear direction). Although not shown, a moving means for moving the first spindle motor 202 and the second spindle motor 203 is provided. The position of the first spindle motor 202 shown in FIG. 19 (a) is the disk rotation drive position of each spindle motor, and along this plane including the disk carrying surface of the spindle motor at this position, The carriage 204 reciprocates in the direction of the arrow X perpendicular to the direction of the arrow Y and in the direction opposite thereto (the left-right direction of the disc player). The carriage 204 is an objective lens 205
And optical pickup means including the following.

FIG. 19 (b) shows a state when the compact disc 206 is reproduced.
203 moves to the disk rotation drive position, and the first spindle motor 202 is released from this position.

In the disc player having such a configuration, a large space must be provided in the player housing to reciprocate the first spindle motor 202 and the second spindle motor 203, and the entire disc player is large. In addition, the moving means for reciprocating the two spindle motors also needs to have a large output, which also causes an increase in the size of the disc player. Further, since the relative position dimension with respect to the optical pickup means needs to be high precision, both spindle motors must be accurately positioned at the above-mentioned disk rotation drive position, and the positioning mechanism for each The motor is provided separately, and the structure is complicated.

Apart from the above, the already developed disc player comprises a disc carrying mechanism which can protrude out of the player housing and which carries the disc to be played and which carries the disc to the playing position. ing. When positioning the disk placed on the disk holding portion outside the player housing on the playing position, that is, the disk holding surface of the spindle motor at the disk rotation driving position, a direction parallel to the disk holding surface and a direction perpendicular thereto. The transfer is performed by moving in two directions. FIG. 20 shows a carry 208 as a main part of the disk holding portion of the already developed disk player. As shown, Carry 2
08 has an optical video disc 201 with a diameter of about 30 cm and 20 cm.
Disk carrying surfaces 208a and 208b carrying the compact disc 206 and a second disc carrying surface 208c carrying the compact disc 206, respectively.
Are provided concentrically. Thus, by arranging the first and second disk carrying surfaces concentrically,
When the disc carrier protrudes out of the player housing, it is possible to give the listener a sense of beauty. However, it is a matter of course that the color of the skin of the carrier 208 is utilized as it is, and even if the surface of the carrier is painted, the colors of the first and second disk carrying surfaces are the same. Therefore, there is a concern that the position of the compact disc 206 having the smallest diameter on the carrier 208 becomes unclear.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points,
Its purpose is to make it easy to reduce the size, to have a simple structure, and to obtain an aesthetic feeling when the disc carrying portion for carrying the disc and transporting it to the playing position protrudes from the player housing. It is another object of the present invention to provide a disk player which can clarify the mounting position of each disk on the disk carrier, has a large degree of freedom in design of the disk carrier, and has good assemblability.

A disk player according to the present invention includes a playing means and a disk transport mechanism for carrying a disk to be played and transporting the disk to a playing position. The playing means is fixed on a predetermined support mechanism and rotationally drives, for example, an optical video disk. First
A second spindle motor having a spindle motor, a carriage that carries pickup means and moves along a plane including a disk carrying surface of the first spindle motor, and a second spindle motor that rotationally drives a compact disk Are located on substantially the same plane as the disk holding surface of the first spindle motor, and
The first position where the distance between the rotation centers of the spindle motor and the disk to be carried and the radius of the disk carrying surface of the first spindle motor are larger than the sum of the first position and the plane including the disk carrying surface of the first spindle motor. A moving means for moving the second spindle motor between the range and a second position deviating from the movement locus of the carriage; and the disk transport mechanism projects outside the player housing. A disk carrier for carrying the disk and moving the disk in a direction parallel to and perpendicular to the disk carrier surface of the first spindle motor; and a drive mechanism for driving the disk carrier. And the disk carrier is the first
A first carry for carrying a disc to be mounted on the spindle motor; and a second carry for carrying a disc to be mounted on the second spindle motor, wherein the first carry and the second carry are The first carrier and the second carry are relatively movable in a plane parallel to the disk carrying surface of the first spindle motor, and the relative movement of the first and second carriers is performed in accordance with the projecting and storing operation of the disk carrying portion with respect to the player housing. And a carry moving mechanism for performing relative movement of each of the carries.
A slide member provided on one of the carriers so as to be movable in the direction of relative movement of the two carriers and having a rack formed along the direction of movement and capable of contacting a predetermined contact portion provided in the player housing; A biasing force is applied to the other one of the racks corresponding to the one of the racks, the gear provided on the one of the racks and meshing with the respective racks, and the first and second carriers. And a biasing force applying means.

Embodiment 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, a rectangular opening 3a extending in the left-right direction is provided on the front surface of the housing 2, that is, on the front panel 3, so that the disk carrier 5 can protrude outside the housing. ing. Here, the left and right referred to here are forwards indicated by arrow Y, and the direction of arrow X is leftward. Arrow Z indicates the upper direction. A door 6 for closing the opening is provided near the opening 3a. A switch group 7 for operating the disk player is provided on the front panel 3.

A chassis 8 is provided in 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. The base member 10, the screw 11, and the like are collectively referred to as a support mechanism. A first spindle motor 13 is fixed to one end of the base member 10. This first spindle motor 13 has a diameter of about 30 cm.
Alternatively, it is for rotationally driving the 20 cm optical video disc 14, 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 moves on a base member 10 so as to move along a plane including a disk carrying surface 13 a of the first spindle motor 13. Are guided by a guide shaft 16 provided at the center of the vehicle.

On the base member 10, a second spindle motor 19 for rotating a compact disc 18 having a diameter of about 12 cm is provided.
Is provided. The second spindle motor 19 is movable between a first position indicated by a solid line in FIG. 2 and a second position indicated by a two-dot chain line. The first position is defined as the disk holding surface 19a of the second spindle motor.
Is located on substantially the same plane as the first spindle motor 13 disk carrying surface 13a, and the distance between the rotation centers of the first spindle motor 13 and the radius of the compact disk 18 to be carried is
D _2/2 (where, D ₂ is compact diameter of disk 18) is greater a position than the sum of the disk carrying surface radius R ₁ of the and the first spindle motor 13. That is, the second in the first position
Compact disc mounted on spindle motor 19
That is, the outer periphery of 18 does not contact the first spindle motor 13. The second position is a position where the first spindle motor 13 departs from the plane including the disk carrying surface 13a and the movement locus of the carriage 15.
However, although different from the detached position shown in the figure, the second position is the disk carrying surface 13a of the first spindle motor 13.
May be outside the diameter of the optical video disc 14 mounted on the first spindle motor 13. As is apparent from the drawing, the movement of the second spindle motor 19 is performed by a rotational movement that changes the direction of the rotation center axis of the second spindle motor. The second position is lower than a plane including the disk carrying surface 13a of the first spindle motor 13 and is on a 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, a so-called dead space is effectively used, and miniaturization of the entire disc player, particularly miniaturization in the direction of arrow Z, is achieved. It is easy to reduce the thickness, that is, to reduce the thickness. Note that the second position can be set below the plane including the disk carrying surface 13a of the first spindle motor 13 and the movement locus of the carriage 15. In this case, the disk player can be set in the arrow X or Y direction. It is easy to reduce the size. Also,
In the illustrated second position, the direction of the rotation center axis of the second spindle motor 19 is substantially perpendicular to the direction of movement of the carriage 15 with the disk carrying surface 13a of the first spindle motor 13, that is, substantially coincides with the arrow X direction. However, it is also possible to set the second position such that the rotation center axis coincides with, for example, the arrow Y direction.

Moving means for moving the second spindle motor 19 will be described with reference to FIGS. 3 (a) to 3 (c).

As shown, the second spindle motor 19 is a leg member.
19 (b), and is rotatably attached to the base member 10 at the distal end of the leg member and via the support pin 20. A fan gear 21 is provided near the second spindle motor 19. The sector gear 21 is a gear body 21a
And the gear body is separate from and coaxial with the gear body.
An intermediate member 21c is provided rotatably about b, and a coil spring 21d is interposed between the gear body and the intermediate member and serves as a spring member. A lever member 22 is rotatably attached at one end to a rotating end of an intermediate member 21c which is a constituent member of the sector gear 21, and the other end of the lever member is free of the second spindle motor 19. It is pivotally attached to the end via a pin 22a. Sector gear 2
The gear 23 meshes with the first gear body 21a. This gear 23
Is integrally formed with a worm wheel 25 that meshes with the worm 24. The worm 24 includes a pair of pulleys 27 and 2
It is connected to an output shaft of a motor 30 via a belt 8 and a belt 29. These gears 23, worm 24, worm wheel 25,
The pulleys 27 and 28, the belt 29 and the motor 30 form a sector gear.
A rotational force applying means for applying a rotational force to the motor 21 is configured. Further, a moving means for rotating the second spindle motor 19 is constituted by the rotational force applying means, the sector gear 21, the lever member 22, and the like.

The moving means and the first and second spindle motors
13, 19, and a base member 10 supporting both spindle motors
By the supporting mechanism including, the carriage 15 including the optical pickup means, and peripheral small members associated therewith,
Performance means for playing a disk is configured.

Next, a description will be given of a disk transport mechanism that includes the above-described disk carrier 5 and transports a disk to be played to a playing position.

As shown in FIGS. 1 and 4, the disc carrier 5 has a first carry 32 for carrying an optical video disc 14 to be placed on a first spindle motor 13 and a second carry on a second spindle motor 19. Compact disc 18 to be placed
And a second carrier 33 for carrying the same. On the upper surface of the first carry 32, two circular shallow concave portions 32a and 32b into which optical video discs of about 30 cm and 20 cm in diameter are respectively inserted.
Are formed concentrically. On the upper surface of the second carrier 33, a circular recess 33 into which the compact disc 18 can be inserted is inserted.
a and a portion 33b which can be connected to the circular recess provided on the first carry 32 for an optical video disc having a diameter of 20 cm. In the lower part of the first carry 32, a plane parallel to the disk carrying 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 (the direction of the arrow Y and the opposite direction) are provided, and the second carry 33 is slidably attached to the two guide shafts. FIGS. 1 and 4 show a state before the second carrier 33 is moved. In this state, the circular concave portion 33a formed in the second carrier 33 for fitting a compact disk is inserted into the first carrier. The optical video disc 32 is provided concentrically with the circular recesses 32a and 32b for fitting the optical video disc. The left and right sides of the second carrier 33 are provided with a pair of protrusions 33d.
A total of four locking portions 32d and 32 projecting from the lower surface of 2
When the projection 33d is engaged with e, the first carry
The movement of the first carry 33 with respect to 32 is restricted within a predetermined range.

As is apparent 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 the left and right. The carriage 32 can reciprocate within a predetermined range in the front-rear direction. Both slide members
The other end of a coil spring 36 attached to the first carry 32 at one end is connected to 35, and the two slide members apply a bias force toward the rear (the direction opposite to the arrow Y) by the coil spring. Has been granted. Each slide member 35 has a rack portion 35a formed on one side with respect to the moving direction along the moving direction.
A gear 38 provided on the lower surface of the rack meshes with the rack portion. The gear 38 is composed of two large and small gears 3 provided coaxially.
9 and 40, and meshed with the rack portion 35a is the small gear 40.
It is. The large gear 39 meshes with another rack portion 33e provided on both the left and right sides of the second carry 33 so as to correspond to the rack portion 35a.

On the other hand, as also shown in FIG.
An L-shaped contact portion 2a with which the rear end of the slide member 35 can contact is provided at a predetermined position in the inside. That is, the rear end of the slide member 35 abuts on the contact portion 2a during the backward movement of the disk carrier 5, and the disk carrier 5 further moves rearward from this state, whereby the first carrier 33 is moved to the first carry position.
It is designed to move backward with respect to the carry 32.

7 to 9 show the slide member 35 and the second carrier.
3 individually shows constituent members of a gear 38 interposed between the gear 38 and the gear 33. As shown in the figure, a boss 39a is provided on a large gear 39 which is a component of the gear 38, and a small gear 40
Is rotatably fitted to the boss portion. A pair of hooks 40a are formed on one main surface of the small gear 40, and a pair of fan-shaped openings formed on the large gear corresponding to the hooks are formed.
By the hook part being inserted into 39b,
The small gear 40 can rotate with respect to the large gear 39 within a predetermined range. Further, a flange 39c is provided on the inner line of the fan-shaped opening 39b, and the hook 40a is engaged with the flange,
Thus, the small gear 40 is prevented from falling off the large gear 39. A ring spring 41 shown in FIG. 9 is interposed between the large gear 39 and the small gear 40. One end of the ring spring 41 projects from the main surface of the large gear 39.
The other end of the ring spring is locked to the hook 40a of the small gear 40. 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, the two gears relatively rotate when a predetermined rotational force or more is applied between the two gears. As is apparent from the above-described configuration, when the disk carrier 5 projects out of the housing 2, the coil spring 36
Of the second through the slide member 35 and the gear 38
It is transmitted to the carry 33, and the second carry is returned to the position shown in FIG.

The slide member 35, the gear 38, and the second carry
Carry movement which moves the second carrier 33 with respect to the first carrier 32 in accordance with the projecting and storing operation of the disk carrier 5 with respect to the housing 2 by the rack portion 33e formed in the 33 and the coil spring 36 as biasing means. A mechanism is configured.

Here, the rearward movement of the second carrier 33 with respect to the first carrier 32 can be determined by appropriately setting the position of the contact portion 2a protruding into the housing 2 so that the rear end of the slide member 35 contacts. It is set to start after the rearward drive of the disk carrier 5 is started. The disc carrier 5 is manually pushed into the housing 2 from the protruding position shown in FIG. 1 to the position shown in FIG.
Thereafter, the housing is completely housed in the housing by a drive mechanism to be described later. By setting the start timing of the backward movement of the second carrier 33 as described above, an excessive force may be applied at the time of manual pushing. Even if it does, the members such as the second carrier 33 will not be adversely affected.

In this embodiment, when the disk carrier 5 projects outside the housing 2, that is, when the disk is carried on the disk carrier, the second carrier 33 is moved.
Is located substantially at the center of the disk holder, but the position of the second carrier 33 in this state may be near the end of the disk holder in the protruding direction.
With this configuration, the compact disc 18
When the disk carrier 5 is carried on the second carrier 33, it is not necessary to largely pull out the disk carrier 5 outside the housing 2, and the operability is improved.

As shown in FIGS. 4 and 5, a pair of rectangular plate-like support members sandwich the disk holder 5 on both left and right sides.
The disk carrier 5 is provided on the disk carrier surface 13a of the first spindle motor 13 by the two support members.
In this case, in this case, in the front-rear direction (the direction of arrow Y and the opposite direction). Fifth
As is apparent from the drawing, a pair of pins 44a spaced apart in the front-rear direction is provided on the outer surface of the support member 44,
Both pins are movably fitted into L-shaped guide holes 8a formed in the chassis 8. That is, the support member 44 moves along the L-shaped guide hole. The L-shaped guide hole 8a has a parallel portion 8b extending in parallel with the disk carrying surface 13a of the first spindle motor 13, and extends perpendicularly to the disk carrying surface 13a continuously from the rear end of the parallel portion. And a vertical portion 8c. Support member 44
Also, a pair of left and right rectangular plate-like moving members 45 are provided so as to sandwich the L-shaped guide hole 8a. Each moving member 45 is attached to the chassis 8 so as to be movable in the front-rear direction (the direction of the arrow Y and the opposite direction). Each support member 44
The pin 44a protruding from the L-shaped guide hole 8a of the chassis 8
Through the 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 carrying surface 13a of the first spindle motor 13, in this case, a front-rear direction, and a rear end of the parallel portion connected to the rear end (in a direction opposite to the arrow Y). And an inclined portion 45c inclined upward (in the direction of the arrow Z) toward. That is, when each moving member 45 moves in the front-rear direction with respect to the supporting member 44, the supporting member and the disk supporting portion 5 supported by the supporting member move vertically, that is, the disk supporting surface 13a of the first spindle motor 13. The cam hole 45a is formed so as to move in a direction perpendicular to the above.

As is clear from FIG. 5, a rack 45e is formed at the lower end of the pair of moving members 45, and the gear 47 meshes with the rack of one of the moving members. This gear 47
Another gear 48 meshing with the gear, a gear portion meshing with the gear 48
Pulley 49 belt 50 and small pulley 51 integrally formed with 49a
Is connected to the output shaft of the motor 52 via the Although not shown, the other end of the shaft 53 in which the gear 47 is fitted at one end reaches near the other moving member 45, and is formed on the other end of the shaft 53. The gear which meshes with the rack part is fitted. That is, when the gear 47 rotates, the pair of left and right moving members 45 move together.

The gears 47 and 48, the pulley 49, the belt 50, the small pulley 51, the motor 52, the shaft 53, and the like constitute driving means for synchronously driving the pair of moving members 45. . A drive mechanism for driving the disk carrier 5 by the driving means, the support members 44, the two moving members 45, the L-shaped guide holes 8a of the chassis 8, and small peripheral members related thereto. It is configured.

Although not shown, the disk carrier 5 is moved in the housing direction (rearward) into the housing 2 to support the disk.
Lock means is provided for locking the disk carrier to the support member when the movement limit position with respect to 44 is reached. Also, the pin 44a of the support member is moved to the parallel portion 8b and the vertical portion 8c of the L-shaped guide hole 8a so that the support member 44 is moved together with the moving member 45 in the direction of accommodating the disk holder.
The support member is locked with respect to the moving member 45 until the crossing portion is reached, and the locked state is released when the pin 44a reaches the crossing portion. Lock / release means for locking are provided.

These locking means, locking / unlocking means, the disk carrying portion 5, a carry moving mechanism (described above) including a slide member 35 and the like, a chassis 8 and a drive mechanism for driving the disk carrying portion including the moving member 45 (described above). ) And peripheral small members related thereto constitute a playing position, that is, a disk transport mechanism for transporting a disk to be played on 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. A gear 56 for operating a rotary potentiometer 55 is engaged with the rack 45f. The potentiometer 55 and the gear 56 are attached to a bracket 8e protruding 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 a control circuit for controlling the operation of the disc player. Similarly, as shown in FIG. 5, near the front and rear ends of the chassis 8, the front end and the rear end of the moving member 45 are engaged with each other, so that the moving member, and thus the disk carrier 5, starts moving. And a pair of detection switches 57 and 58 for detecting the movement end position. These potentiometer 55, comparator (described above) and detection switches 57, 58
Thus, a position detecting means for detecting the position of the disk carrier 5 is constituted.

Although the position detection of the moving member 45 and therefore the position of the disk holder 5 can be performed only by 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. As a result, the configuration of the control circuit described above can be simplified.
Although the gear 56 for operating the potentiometer 55 is meshed with the rack portion 45f of the moving member 45, the gear may mesh with the gear 47 or the gear 48. Further, although a rotary potentiometer is used in the disk player, a so-called slide volume of a linear displacement type can be used.

Next, a clamp mechanism for clamping the disc conveyed to the playing position will be described.

As shown in FIGS. 4 and 5, a pair of substantially rectangular plate-like holding members 61 and 62 are provided in the housing 2 so as to be separated from each other in the front-rear direction and extend in the left-right direction. 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 the first spindle motor 13.
The direction is substantially perpendicular to the disk carrying surface 13a. However, the arc-shaped notches 61a, 62a formed at the rear ends of the holding members 61, 62 are provided with other pins 44d projecting from the support member 45.
Are fitted with a slight gap therebetween, whereby the downward swinging of the holding members 61 and 62 is restricted within a predetermined range, and the swinging operation with the pin 44c as a fulcrum can be performed. . As shown in FIG. 6, each of the holding members 61 and 62
A disc-shaped first pressing member 63 and a second pressing member 64, which cooperate with one of the first and second spindle motors 13 and 19, respectively, and perform a disk clamping operation, are rotatably mounted on the lower surface of the disk. ing. As shown in FIG. 5, coil springs 65 and 66 are connected to the rear ends of the holding members 61 and 62, respectively. The coil springs act to bias the holding members 61 and 62 in a direction in which the first and second pressing members 63 and 64 approach the first and second spindle motors 13 and 19, respectively.

As shown in FIG. 5, a holding member arranged rearward
A roller 62b is provided at a side end of the moving member 62, and the moving member 4
The roller is attached to the timing cam 45h formed at the upper end of
62b is engaged. By appropriately determining the shape of the timing cam portion 45h, the shape of the cam hole 45a provided in the moving member 45, the amount of movement of the moving member, etc., the first and second spindle motors 13, 19 And the timing of attachment and detachment of the second pressing members 63 and 64 is set. That is, the attachment and detachment of the first and second pressing members to and from the first and second spindle motors 13 and 19 are performed individually. Note that, as is clear from the above description, the first
No special drive source for moving the second pressing members 63 and 64 together with the holding members 61 and 62 is provided, and the moving operation is performed by applying a driving force by the above-described disk transport mechanism. Has become.

The first and second pressing members 63 and 64, the holding members 61 and 62 for holding these members, and the coil springs 65 and 66 as biasing means are conveyed to the playing position, that is, each spindle motor. A clamp mechanism for clamping the disc is configured.

Next, the operation of the disc player having the above configuration will be described in the second step.
A brief description will be given along the performance procedure with reference to FIGS. 10 to 16 as well.

First, the case of playing the optical video disk 14 (see FIG. 2) will be described. As shown in FIG. 1, the disc carrier 5 is completely protruded out of the housing 2, and the optical video disc is placed at a predetermined position on the disc carrier. The operation of projecting the disk carrier 5 out of the housing is performed in exactly the reverse of the storing operation described below, and will not be described in detail.

After the optical video disc is placed on the disc carrier 5, the disc carrier 5 is manually pushed into the housing 2 to the position shown in FIGS. When the disk carrier 5 reaches this position, a predetermined detection switch operates, whereby the motor 52 shown in FIG. 5 starts rotating. At this time, the disk carrier 5 is supported by the support member 44.
Is locked by the lock means, and starts to be integrally retracted. Therefore, as shown in FIG. 12, the disk carrier 5 moves backward (in the direction opposite to the arrow Y) and is completely housed in the housing 2. 10 and 11
As shown in the figure, the second carry 33 is moved to a position corresponding to the second spindle motor 19. At this time, the disc diameter to be played is discriminated by discriminating means (not shown).

When it is determined that the disk being transported is the optical video disk 14, as shown in FIG.
45 is further driven backward by a predetermined distance. Accordingly, the disk carrier 5 is lowered together with the support member 44, and the optical video disk 14 is mounted on the first spindle motor 13 and clamped as shown in FIG. In this state, the motor 52 stops, and the disk can be played.

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

When the end of the performance and the detection switch (not shown) detects that the carriage 15 has reached the movement limit position,
The carriage 15 and the first spindle motor 13 are stopped, and at the same time, the motor 52 starts a reversing operation. Therefore, as described above, the disk carrier 5 projects out of the housing 2 by following the completely reverse process, and the lock is released. It becomes free and becomes the state shown in FIG. 4 to FIG. Thereafter, the optical disc 14 is collected by manually pulling out the disc carrier 5.

The case where the disk to be played is the compact disk 18 (see FIG. 2) will be described. The operation of the disk transport mechanism is exactly the same as that of the optical video disk 14 up to the state shown in FIG. When the discriminating means judges that the disc to be played is the compact disc 18, the moving member 45 is driven further rearward than the state shown in FIG. 13 to reach the state shown in FIG. Thus, the compact disc 18 is, as shown in FIG.
It is clamped on the second spindle motor 19. In addition,
The movement of the second spindle motor 19 shown in FIGS. 14 and 16 is performed in response to a signal from the determination means.

Incidentally, in the disc player, the movement of the second carrier 33 carrying the compact disc 18 with respect to the first carrier 32 is performed by linear reciprocating motion, as shown in FIGS. 17 (a) and (b) and FIG. As shown in FIGS. 18 (a) and 18 (b), the second carry 33 is a member that swings around a support shaft 70, and a gear 71 and a rack member 72 are added to drive the second carry. It can also be configured.

In the disc player, when the optical video disc 14 is clamped, the second pressing member 64 for the compact disc 18 is at the unclamping position, and when the second pressing member 64 is at the clamping position, the optical video disc 14 The first pressing member 63 is also set at the clamp position, but the present invention is not limited to this configuration. For example, the timing cam portion corresponding to the first pressing member (for the second pressing member 64, By providing a timing cam portion 45h), the first pressing member 63 can be moved to the clamp release position when the compact disc 18 is clamped.

As described in detail above, in the disc player according to the present invention, a first spindle motor fixed on a predetermined support mechanism and configured to rotationally drive an optical video disc, for example,
A carriage that carries the pickup means and moves along a plane including the disk carrying surface of the first spindle motor; and a second spindle motor that rotationally drives the compact disk, wherein the second spindle motor has a disk carrying surface. Is located on substantially the same plane as the disk holding surface of the first spindle motor, and the distance between the rotation centers of the first spindle motor and the radius of the disk to be held and the first
Moveable between a first position which is larger than the sum of the radius of the disk carrying surface of the spindle motor and a predetermined range of a plane including the disk carrying surface of the first spindle motor and a second position which is separated from the movement locus of the carriage. And a moving means for moving the second spindle motor.

Therefore, as compared with a disc player of a type in which all of the provided spindle motors are moved, the space provided in the player housing for moving the spindle motor is small, and the size of the entire disc player is easily reduced. It is becoming.

Further, the moving means for moving the second spindle motor only needs to have a small output and a small size. Further, a positioning mechanism for positioning the second spindle motor at the first position, that is, the disk rotation driving position, is also one. Since only one disk player needs to be provided, the size of the entire disc player can be further easily reduced, and the structure can be simplified.

Further, in the disc player according to the present invention, a disc carrier for projecting out of the player housing and carrying the disc to move the disc in a direction parallel to and perpendicular to the disc carrying surface of the first spindle motor. And a drive mechanism for driving the disc carrier. The disc carrier has a first carry for carrying a disc to be mounted on the first spindle motor, and a second carrier for carrying the disc to be mounted on the first spindle motor. A second carrier for carrying a disk to be mounted on the spindle motor, wherein the first and second carries are relatively movable in a plane parallel to the disk carrying surface of the first spindle motor. , The first carry and the second
The relative movement of the carrier is performed in accordance with the operation of projecting and storing the disc carrying portion in the player housing.
That is, when the disc carrier projects outside the player housing, the first carry and the second
The carriages are arranged concentrically, and when the disc carrier is accommodated in the player housing, both the carriers can move to positions corresponding to the first and second spindle motors, respectively. -ing

As described above, even though the respective spindle motors are spaced apart from each other in the same direction of the pickup means, when the disc carrying portion protrudes out of the player housing, the two carriers can be positioned concentrically. Therefore, it can give the listener a sense of beauty. In addition, since the carriers that carry the respective disks are independent, it is extremely easy to color-code the respective carriers, and the mounting positions of the respective disks on the disk carrier can be clarified. This increases the degree of freedom in design.

In the disc player according to the present invention, a carry moving mechanism for relatively moving the respective carriers is provided on one of the first and second carries so as to be movable in the direction of relative movement between the two carries. And a slide member having a rack portion formed along the moving direction and capable of contacting a predetermined contact portion provided in the player housing, and another rack provided on the other of the one corresponding to the rack portion. A gear provided on the one side and meshing with each of the racks; and a biasing means for applying a biasing force to the first and second carriers.

That is, the two carriers are relatively moved by utilizing a part of the driving force of the disk transport mechanism. Therefore, it is not necessary to provide a special drive source for performing the relative movement, and it is easy to reduce the size of the entire disc player. Further, since the carry moving mechanism is compactly housed in the disc carrying portion including the first and second carries, it is easy to reduce the size, and the assemblability when assembling the disc player is good. It is becoming.

[Brief description of the drawings]

FIG. 1 is a perspective view 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 FIGS. 3 (a) to 3 (c) are the second spindle motor and its periphery. FIGS. 4 and 5 are plan and side views, respectively, of the internal structure of the disc player, FIG. 6 is a diagram for explaining a clamp mechanism, and FIGS. 9 (a) to 9 are partially detailed views of the internal structure, FIGS. 10 to 16 are diagrams for explaining the operation of the disc player, and FIGS. 17 (a), (b) and FIG. FIGS. 18 (a) and (b) are views showing a partial modification of the disc player, and FIGS. 19 (a) to 20 are views for explaining the main parts of the already developed disc player. . Description of Signs of Main Parts 2 Housing, 2a Contact Section 3 Front Panel 3a Opening 5 Disk Carrier 6 Door 8 Chassis 8a L-shaped Guide Hole 8b … Parallel part, 8c… Vertical part 8e… Bracket part 10… Base member 13… First spindle motor 13a… Disc carrying surface 14… Optical video disc 15… Carriage 16,34… Guide Shaft 18 Compact disk 19 Second spindle motor 19a Disk holding surface 20 Support pin 21 Sector gear, 21a Gear body 21c Intermediate member 21d, 36, 65, 66 Coil Spring 22 Lever members 22a, 44a, 44c, 44d Pins 23, 38, 47, 48, 56, 71 Gears 24 Worm 25 Worm wheel 27, 28, 49 Pulley 29, 50 …… Belt 30,52 …… Motor 32 …… First carry 33 …… Second carry 33e, 35a, 45e, 45f… La Clamp part 35 Slide member 39 Large gear, 40 Small gear 41 Ring spring 44 Support member 45 Moving member 45a Cam hole 45h Timing cam part 51 Small pulley Reference numeral 53 Shaft 55 Potentiometer 57 58 Detection switch 61 62 Holding member 63 First pressing member 64 Second pressing member

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhiko Seto 4-2610 Tokorozawa Hanazono Pioneer Corporation Tokorozawa Plant (72) Inventor Shigeharu Furusawa Tokorozawa City Hanazono 4-2610 Pioneer Tokorozawa Plant

Claims (3)

(57) [Claims] An electronic musical instrument comprising: a housing; a playing means provided in the housing; and a disk transport mechanism for carrying a disk to be played and transporting the disk to a playing position, wherein the playing means includes a support mechanism, and the support mechanism. A first spindle motor fixedly mounted on the first spindle motor,
A carriage moving along a plane including a disk carrying surface of the spindle motor; and a distance between the rotation centers of the first and second spindle motors, wherein the disk carrying surface is located on substantially the same plane as the disk carrying surface of the first spindle motor. Is larger than the sum of the radius of the disc to be carried and the radius of the disc carrying surface of the first spindle motor, the predetermined range of the plane including the disc carrying surface of the first spindle motor, and the movement locus of the carriage. Second to leave
A second spindle motor movable between the first and second positions, and a moving means for moving the second spindle motor, wherein the disk transport mechanism can protrude outside the housing and carry the disk to support the second disk. A spindle motor having a disk carrier for moving the disk in a direction parallel to and perpendicular to the disk carrier surface of the spindle motor, and a drive mechanism for driving the disk carrier; A first carry for carrying a disc to be mounted on the first spindle motor; and a second carry for carrying a disc to be mounted on the second spindle motor, wherein the first carry and the second carry are provided. The carry is relatively movable in a direction parallel to the disk carrying surface of the first spindle motor, and the first carry and the A carry mechanism for performing relative movement of the two carriers in accordance with a projecting and storing operation of the disc holder with respect to the housing, wherein the carry movement mechanism is provided to either one of the first carry and the second carry. A slide member movably provided in a relative movement direction of the rack member and having a rack portion formed along the movement direction and capable of contacting a predetermined contact portion provided in the housing; And a gear provided on one of the racks and meshing with the rack and the other rack, and a bias force applying means for applying a bias force to the first carry and the second carry. And a disk player. 2. The disc player according to claim 1, wherein the relative movement of the first and second carriers is performed after the drive of the disc carrier is started. 3. An outer diameter of a disk carried by said second spindle motor is smaller than an outer diameter of a disk carried by said first spindle motor, and said second carrier carries a disk when said second carrier carries a disk. 3. The disk player according to claim 1, wherein the position is set near an end of the disk holding portion in a protruding direction.