JPS63146271A - Compatible disk player - Google Patents

Abstract

PURPOSE:To obtain a compatible disk player with low cost by using a mobile member which moves a 2nd turntable to a non-disk holding position when the mobile member has free reciprocating motions between a protruded position and non-protruded position and toward a rotary shaft of a spindle. CONSTITUTION:A mobile member 65 moves a 2nd turntable 14 to a non-disk holding position when the mobile member 65 has free reciprocating motions between a protruded position and a non-protruded position and toward a rotary shaft of a spindle 11h and moves to the non-protruded position together with a contact secured to a disk pressing member 63 of a disk clamp mechanism. The member 65 contains an adaptor 14c. In other words, the member 65 is pressed by the member 63 via a disk and the table 14 is moved to a non-disk holding position without using any special drive means. Thus the number of parts is decreased together with reduction of the cost for a compartible disk player.

Description

[Detailed description of the invention] skin five stand 1 The present invention relates to a compatible disc player.

Compatible disc players are already known that play back a plurality of types of discs, such as optical video discs and compact discs, which have different standards such as the size of the center hole and the number of revolutions. A conventional example of a compatible disc player shown in FIGS. 11 to 14 is shown.

As shown in FIG. 11, the front surface of the housing 102 of the compatible disc player, that is, the front panel 103, has a rectangular opening extending in the left-right direction so that the disc holding part 105 can protrude outside the housing. A section 103a is provided. However, the left side here refers to the front direction indicated by the arrow Y, and the direction of the arrow X is the left side. Further, arrow Z indicates upward. A door 106 is provided near the opening 103a to close the opening. Note that a switch group 107 is provided on the front panel 103 for operating the ice cream player.

A chassis 108 is provided within the housing 102, and a base member 110 shown in FIG. 12 is fixed to a predetermined position on the lower surface of the chassis by screws 111 or the like. A first spindle motor 113 is fixed to one end of the base member 110. This first spindle motor 113 is for rotating an optical video disc 114 having a diameter of about 301 or 20z, and is suitable for high-load, high-speed rotation. A carriage 115 carrying an optical pickup means is disposed behind the first spindle motor 113, and is mounted on the base member 110 in order to move along a plane including the disk carrying surface 113a of the first spindle motor 113. It is guided by a guide shaft 116 provided in the.

Also provided on the base member 110 is a second spindle motor 119 for rotating a compact disc 118 having a diameter of about 12 cm.

The second spindle motor 119 is swingable (in the direction of arrow U) between a first position shown by a solid line in FIG. 12 and a second position shown by a two-dot chain line. This first
The position refers to the disk supporting surface 1 of the second spindle motor.
19a is on substantially the same plane as the disk supporting surface 113a of the first spindle motor 113, and the distance between the centers of rotation with the first spindle motor 113 is equal to the radius D2/2 of the compact disk 118 to be supported (however, D2 is the diameter of the compact disk 118) and the radius R1 of the disk supporting surface of the first spindle motor 113. That is, the compact disk 118 placed on the second spindle motor 119 in the first position
The outer periphery of the spindle motor 113 does not come into contact with the first spindle motor 113. Moreover, the above-mentioned second position is
Disk supporting surface 113a of first spindle motor 113
This is the position where the carriage 115 departs from the plane containing the plane and the movement locus of the carriage 115.

Although not shown, the second spindle motor 1
A mechanism is provided for swinging 19. Furthermore, the aforementioned disc holding section 105 carries the disc to be played and conveys it onto each spindle motor.
(not shown) is provided. However, the disk holding portion 105 is arranged in a direction parallel to the disk holding surface 113a of the first spindle motor 113 (the direction of arrow Y and the opposite direction).
and in two directions perpendicular to the direction (direction of arrow Z and direction opposite thereto).

As shown in FIG. 11, the disk holder 105 is
a first carrier 132 carrying an optical video disc 114 to be placed on a first spindle motor 113;
A compact disk 11 that is movable in the front-back direction (direction of arrow Y and the opposite direction) with respect to the first carry 132 and is to be placed on the second spindle motor 119-H.
8. 1st
Two circular shallow recesses 132a and 132b are formed concentrically on the upper surface of the carrier 132, into which optical video disks having diameters of about 30n and 20a are inserted, respectively.

Further, on the upper surface of the second carrier 133, there are four circular parts 133a into which the compact disc 118 can be inserted, and a diameter of 20 mm.
First carrier 132 for cIA optical video discs
A portion 1 that can be continuous with the circular recess 132b provided in the
33b is formed.

Although not shown, the second carrier 133 is moved to the first carrier 13 in conjunction with the movement of the disk holding section 105.
A carry moving mechanism is provided to move the carry with respect to the 2.

As shown in FIG. 13, a pair of substantially rectangular plate-shaped holding members 161 and 162 are provided within the housing 102, spaced apart from each other in the front and rear, and extending in the left and right directions. Each of the holding members 161 and 162 is arranged in a direction perpendicular to the disk supporting surface 113a of the first spindle motor 113, that is, in an up-down direction (direction of arrow Z and the opposite direction).
It can be moved freely. The lower surface of each holding member 161 and 162 is provided with a first and second spindle motor 11.
A first pressing member 163 and a second suppressing member 164 each having a disk shape are rotatably attached to each of the disks 163 and 119 to perform a disk clamping action.

The first and second pressing members 163, 164, holding members 161, 162, etc. that hold them constitute a disc clamping mechanism that clamps the disc transported to the performance position, that is, each spindle motor. . Note that the first and second spindle motors 113, 1
The first and second pressing members 163 and 164 are attached and detached from each other individually.

Next, the operation of the disc player configured as described above will be briefly explained along with the playing procedure.

First, the case where the optical video disc 114 (see FIG. 12) is played will be described. As shown in FIG. 11, the disc holder 105 is completely projected out of the housing 102, and an optical video disc is placed at a predetermined position on the disc holder. Note that the disk holding section 105
The projecting operation to the outside of the housing is performed by following the completely opposite process to the retracting operation described below, and therefore will not be described in detail.

After placing the optical video disc on the disc holder 105, manually move the disc holder 105 to the housing 10.
Push it inside 2. When the disc holder 105 reaches this position, a predetermined detection switch is activated, and the disc holder 1
05 begins to be drawn in. Therefore, the disk holding section 105
further moves backward (in the direction opposite to the arrow Y direction) and removes the housing 10.
It is completely contained within 2. Further, as shown in FIG. 14, the second carry 133 is connected to the second spindle motor 119.
is moved to the corresponding position. Also, at this time,
A determining means (not shown) determines the diameter of the disc to be played.

When it is determined that the disc being transported is an optical video disc 114, the disc holder 105 is lowered, and the optical video disc 114 is placed on the first spindle motor 113 and clamped. . Also,
The second spindle motor 119 is located at a position indicated by a two-dot chain line in FIG. 12, that is, outside the movement trajectory of the carriage 115.

In this state, the disc can be played.

When the loading of the optical video disc 114 is completed, the first spindle motor 113 rotates, the carriage 115 (see FIG. 12) begins to move, and disc playback begins.

When the performance ends and a detection switch (not shown) detects that the carriage 115 has reached its travel limit, the carriage 115 and the first spindle motor 113 are stopped, and the disc holding section 105 is moved in the same manner as described above. Following the reverse process, the optical video disc 114 is projected out of the housing 102 and recovered.

The disc to be played is compact disc 118 (first
(see FIG. 2), the operation is almost the same as in the case of the optical video disc 114 described above. When the aforementioned discrimination means determines that the disc to be played is the compact disc 118, the second spindle motor 119 is swung to the position shown by the solid line in FIG. It is clamped on the second spindle motor. Note that the second spindle motor 119 is oscillated in response to a signal from the above-described determining means.

In the above-mentioned disc player, the two spindle motors 113 and 119 are separately provided separated by a predetermined distance from each other, and therefore, as shown in FIG. 13, two sets of disc clamp mechanisms are provided for each spindle motor. It is provided. Therefore, the number of parts is large, leading to an increase in cost. Furthermore, it is necessary to set the positions of the two parts of both spindle motors 113 and 119 with high precision and individually with respect to the carriage 115 carrying the optical pickup means, and to set the relative positions between these parts. The position adjustment mechanism for this becomes complicated, which also increases costs.

1. The present invention has been made in view of the above points, and its object is to provide a compatible disc player with low cost.

A compatible disc player according to the present invention provides a first and a second dual drive source for a common rotary drive source including a spindle.
A second turntable is mounted concentrically, and a second outer turntable is moved along the spindle from a disk carrying position to a non-disc carrying position so that it is evacuated from the movement trajectory of the pickup, and Protruding position and non-protruding position n in the rotation axis direction
a moving member configured to be able to reciprocate between the two turntables and to come into contact with the disc pressing member of the disc clamp mechanism, and to move the second turntable to the non-disc holding position when the second turntable is moved to the non-protruding position; It is characterized by the presence of

Friend-1-1 Hereinafter, a compatible 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 compatible disc player.

As shown in FIG. 1, the front surface of the housing 2, that is, the front panel 3, is provided with a rectangular opening 3a extending in the left-right direction so that the disk supporting portion 5 can protrude outside the housing. ing. 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. A door 6 is provided near the opening 3a to close the opening. A group of switches 7 are provided on the front panel 3 for operating the disc player.

A chassis 8 is provided within the housing 2, and a base member 1 shown in FIG.
0 is fixed with a screw or the like.

A variable rotation speed motor 11 shown in FIGS. 3 to 5 is provided on the base member 10. As shown in FIGS.

The motor includes a thrust bearing 11a, a housing 11b,
It has a stator section consisting of a core 11C, radial bearings 11d and 11e, and a rotor section consisting of a yoke 11q, a spindle 11h, and a rotor magnet 11i.

A first turntable 12 is attached to the spindle 11h of the variable rotation speed motor 11.

As shown in FIG. 5, this first turntable 12
carries a compact disk 13 (also shown in FIG. 1) having a diameter of 1201 mm. A second turntable 14 is concentrically attached to the first turntable 12 and is freely fitted onto the outside in the axial direction of the spindle 11h.

Specifically, the first turntable 12 has a spindle 11.
For example, four key grooves 128 are formed parallel to the axial direction of h, and a sliding key 148 fixed to the inner peripheral surface of the second turntable 14 is slidably engaged with the key grooves. It is. As shown in FIG. 3, the second turntable 14 carries an optical video disc 15 (also shown in FIG. 1) having a diameter of 301 or 20c1, and rotates together with the first turntable 12. It is rotated by a variable number motor 11.

Note that the position of the second turntable 14 shown in FIG. 3 is referred to as a disk holding position, and the position shown in FIG. 5 is referred to as a non-disc holding position. That is, the second turntable 14 moves between the disk carrying position and the non-disc carrying position.

A protrusion 12C is formed on the disk supporting surface 12b of the first turntable 12. The protrusion 12C fits into the center hole of the compact disk 13 (shown in the first figure) to center the compact disk. Further, in the center of the second turntable 14, there is an adapter 14C that fits into the center hole of the optical video disc 15 (shown in the first figure) to center the optical video disc. It is provided separately from 14d. A coil spring 14e is arranged between the adapter 14c and the main body 14d.

As shown in FIGS. 2, 3, and 5, a carriage 16 carrying an optical pickup means is disposed behind the first and second turntables 12.14, and a disc carrying surface 12b of the turntable;
In order to move after IyJ along a plane including 14f, it is guided by a guide shaft 17 (shown in the second diagram) provided on the base member 10, etc. Further, as shown in FIG. 2, a motor 21. Pulley 22. Belt 23. The drive flPIIll consists of a pulley 24, a worm 25, etc.
A mechanism is provided, and the carriage 16 is moved by the drive mechanism.

When the second turntable 14 is in the aforementioned non-disc holding position (the position shown in FIG. 5), it is separated from the movement path of the carriage 16 and does not interfere with the movement of the carriage.

As shown in FIGS. 3 and 5, a coil spring 27 is provided between the variable rotation speed motor 11 and the second turntable 14. As shown in FIGS. This coil spring 27
is for urging the second turntable 14 toward its disk holding position (the position indicated by the two-dot chain line in FIG. 3).

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 6, the disk holding section 5
, circular first disk carrying surfaces 5a and 5b carrying an optical video disk 15 to be placed on the second turntable 14, and carrying a compact disk 13 to be placed on the first turntable 12. A circular second disk supporting surface 5C is provided. Two first disk supporting surfaces 5a and 5b and one second disk supporting surface 5C are formed concentrically with each other at the center of the disk supporting section 5.

As shown in FIGS. 6 and 7, the disk holding section 5
A pair of rectangular plate-shaped support members 4 sandwiching the
4 are provided, and the disc carrier 5 supports each disc carrier surface 12b of the first and second turntables 12.14 by means of the support members.

It is supported so as to be movable in a direction parallel to 14f, in this case, in the front-back direction (arrow Y direction and the opposite direction). As is clear from FIGS. 6 and 7, the support member 44
A pair of bins 44 are provided on the outer surface of the
A is provided in a protruding manner, and both bottles are movably inserted into a single-shaped guide hole 8a formed in the chassis 8. In other words, the support part @44 moves along the L-shaped guide hole. The single-shaped guide hole 8a has a parallel portion 8b extending parallel to the disk supporting surfaces 12b, 14f of the first and second turntables 12.14;
Continuing from the rear end of the parallel portion, there is a vertical portion 8C extending perpendicularly to each of the disk supporting surfaces. 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 4
Reference numeral 5 is attached to the chassis 8 so as to be movable in the front-rear direction (in the direction of arrow Y and the opposite direction). The pins 44a protruding from each support member 44 are slidably engaged with cam holes 458 formed in each movable member 45 through the straight-line guide hole 8a of the chassis 8. Cam hole 4
5a is the disk supporting surface 12b of the first and second turntables 12.14.

14f, in this case, a parallel portion 45b extending in the front-rear direction, and a slope that is continuous with the rear end of the parallel portion and slopes upward (in the direction of arrow Z) toward the rear (counter to the direction of arrow Y). It consists of a portion 45c.

That is, when each movable member 45 moves in the front-rear direction with respect to the support member 44, the support member and the disk holding part 5 supported by the support member move in the vertical direction, that is, the first and second
Disk carrier 12b, 1 of turntable 12.14
4f and! ! ! The cam hole 45a is formed so as to move in a straight direction.

As is clear from FIG. 7, rack portions 45e are formed at the lower ends of the pair of moving members 45, and #A1147 is engaged with the rack portions of one of the moving members. This gear 47 meshes with the gear 48. A pulley 49 in which a gear portion 49a that meshes with the gear 48 is formed into a body. It is connected to the output shaft of a motor 52 via a belt 50 and a small pulley 51. Although not shown, the other end of the shaft 53 on which the gear 47 is fitted has reached the vicinity of the other moving member 45, and the other end has a
A gear that meshes with a rack portion formed on the moving member is fitted. That is, as the gear 47 rotates, the pair of left and right moving members 45 move together.

The above gears 47, 48, pulley 49, and belt 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 self-moving member 4
5, the single-shaped guide hole 8a of the chassis 8, and peripheral small members related thereto constitute a drive mechanism for driving the disk holding section 5.

Although not shown, when the disk holder 5 is moved in the storage direction (rearward) into the housing 2 and reaches the movement limit position relative to the support member 44, the disk holder 5 is locked relative to the support member. Locking means are provided. In addition, so that the support member 44 is moved together with the moving member 45 in the disc carrier storage direction, until the bin 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. The supporting member is locked to the moving member 45, and when the bottle 44a reaches the intersection, the locked state is released and the supporting member 4
A locking/unlocking means is provided for locking the housing 4 to the chassis 8 only in the storing direction.

These locking means, locking/unlocking means, the disk holding section 5, the chassis 8, the drive mechanism for moving the disk holding section (described above) including the moving member 45, etc., and the peripheral small members related thereto allow the performance to be performed. A disc transport mechanism is constructed to transport a disc to be played to a position, that is, on each turntable.

As shown in FIG. 7, another rack section 45'' is formed at the lower end of the movable member 45 behind the rack section 458.A rotary potentiometer 55 is connected to this rack section 45f. The potentiometer 55 and the gear 56 are attached to a bracket part 8e projecting from the lower end of the chassis 8.Although not shown, the potentiometer 55 and the gear 56 are attached to a bracket part 8e that projects from the lower end of the chassis 8. Potentiometer 5 is included in the control circuit.
A comparator is built in to compare the terminal voltage of No. 5 with the reference voltage. (As shown in FIG. 7, the front and rear ends of the movable member 45 are engaged with the front and rear ends of the chassis 8, respectively, so that the movable member, and therefore the disk carrier 5, starts to move.) A pair of detection switches 57 and 58 are attached to detect the position and the position of the movement path 7.These potentiometers 55 and comparators (
(described above), the detection switches 57 and 58, etc., constitute a position detection means for detecting the position of the disk holder 5.

Next, a description will be given of a disc clamp mechanism that clamps the disc transported to the v4 performance position.

As shown in FIGS. 6 and 7, a holding member 61 having a substantially rectangular plate shape extending in the left-right direction is provided in the housing 2.
is provided. The holding member 61 is swingably attached to the support member 44 via the pin 44G at the front end. Further, the direction in which the holding member swings is substantially perpendicular to the disk supporting surface of each of the turntables described above. However, the arcuate notch 61a formed at the rear end of the holding member 61 fits into the other bottle 44d protruding from the support member 45 with a small gap, so that
The downward swinging of the holding member 61 is regulated within a predetermined range,
It is configured to be able to swing around the bin 44C as a fulcrum. As shown in FIG. 8, on the lower surface of the holding member 61, there is a disc-shaped pressing member 6 that cooperates with the first and second turntables 12, 14 to perform a disc clamping action.
3 is rotatably attached.

As shown in FIGS. 3 and 5, the suppressing member 63 includes an annular magnet 63a that attaches to a magnetic plate 14g provided on the disk supporting portion of the second turntable 14 to apply a clamping force; Another annular magnet 63b is provided which is made of a magnetic material and which attracts the disk holding portion of the first turntable 12 to apply a clamping force.

The above-described pressing member 63 and the holding member 61 that holds it
The disc clamping mechanism which clamps the disc conveyed to the performance position, that is, each turntable, is constituted by these and related peripheral small members.

As shown in FIGS. 3 and 4, the pressing member 63 has an opening 63G into which the adapter 14c as a centering member is loosely inserted when clamping the optical video disc 15.
is formed. In addition, in Fig. 4, adapter 1
Although it is shown that three 4Cs are provided, the third
As is clear from the figures and FIG. 8, they are integrally formed at their respective lower ends.

As mentioned above, when the optical video disc 15 is clamped, the adapter 14c is inserted into the opening 63 of the pressing member 63.
c and protrudes above the disk supporting surface 12b of the first turntable 12.

However, as shown in FIG. 5, when the compact disc 13 is clamped by the pressing member 63, the adapter 14c
The tip is pushed downward and lowered. Accordingly, the entire second turntable 14, including the adapter 14C, moves to its non-disk carrying position. That is, the second turntable 14 is moved to the non-disk holding position by the disk clamp mechanism. Note that the position of the adapter 14C shown in FIG. 3 is referred to as a protruding position, whereas the position of the adapter 14c shown in FIG. 5 is referred to as a non-protruding position. Also,
The upward return movement of the second turntable 14 including the adapter 14C is performed by the biasing force of the coil spring 27.

Next, the operation of the disc player having the above configuration will be described in the ninth section.
The performance procedure will be briefly explained with reference to the figures.

First, the case where the optical video disc 15 (see FIG. 1) is played will be described. As shown in FIG. 1, the disc holder 5 is completely projected out of the housing 2, and the optical video disc 1 is placed in a predetermined position on the disc holder.
Place 5. 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 15 is placed on the disc holder 5, the disc holder 5 is manually pushed into the housing 2 to the position shown in FIGS. 6-8.

When the disk carrier 5 reaches this position, a predetermined detection switch is activated, and the motor 52 shown in FIG. 7 starts rotating. At this time, the disk holding portion 5 is locked to the support member 44 by the locking means, and begins to be drawn into the support member 44. Therefore, the disk holding section 5
moves in the dipping direction (in the opposite direction of arrow Y), is completely housed in the housing 2, and then moves downward as shown in FIG. Therefore, the optical video disc 15 is placed on the second turntable 14 and clamped as shown in FIG. At this time, the diameter of the disc to be played is determined by the diameter determining means shown in the figure.

In this state, the motor 52 stops, and the disc can be played.

When the O-ding of the optical video disc 15 is completed, the second turntable 14 is rotated together with the first turntable 12, the carriage 16 (see FIGS. 2 and 3) begins to move, and disc playback begins. . However, the n rotation number of each turntable is the second turntable 1.
4.

When a detection switch (not shown) detects that the performance has ended and the carriage 16 has reached its movement limit position,
The carriage 16 and the second turntable 14 (as well as the first turntable 12) are stopped, and at the same time the motor 52 starts a reversing operation.

Therefore, as mentioned before, the disk supporting part 5 protrudes to the outside of the housing 2 by following a process completely opposite to that described above.
The state shown in FIGS. 6 to 8 is reached. Thereafter, the optical video disc 15 is recovered by manually pulling out the disc holder 5.

When the disc to be played is the compact disc 13 (see FIG. 1), the disc transport operation is almost the same as that for the optical video disc 15 described above. However, the second turntable 14 is moved to the non-disk holding position t shown in FIG. 5 by the disk clamp 14M and removed from the movement path of the carriage 16. Therefore, the compact disc 13 is placed on the first turntable 12.
placed on top. After this, the first turntable becomes the second turntable.
The disc is rotated together with the turntable 14 at a rotational speed suitable for the first turntable, and disk performance is started. The recovery of the disc is the same as in the case of the optical video disc 15 described above.

Incidentally, the rotation speed of the aforementioned variable rotation speed motor 11 is set by a control circuit (not shown).

FIG. 10 shows the main parts of a compatible disc player as another embodiment of the present invention.

In the following description, the same reference numerals are used for the same or corresponding parts as those of the compatible disc player shown in FIGS. 1 to 9.

As shown in FIG. 10, in the disc player, the first turntable 12 is provided with a rod-shaped moving member 65 that moves between a protruding position and a non-protruding position in the direction of the rotation axis of the spindle 11h. The disc clamping suppressing member 63 comes into contact with the upper end of the movable member and moves it downward (in the opposite direction of the arrow 2), so that the second turntable 14 is moved from the disc holding position (the position shown by the solid line) to the non-disc position. The disk holding position is moved to the position indicated by the two-dot chain line. However, this moving member 65 and the second turntable 14 are connected via a speed-doubling mechanism consisting of two lever members 66 and 67 and three connecting pins 68, so that the second turntable 14 is the moving member. For example, it moves at twice the moving speed of 65, and for twice the distance.

By providing the speed-doubling mechanism in this manner, the amount of protrusion H of the moving member 65 in the protruding position from the disk supporting surface 12b of the first turntable 12 can be kept small.

In the compatible disc players shown in FIGS. 1 to 9, this moving member 65 is not provided, and an adapter 14C serving as a disc centering member is used instead. Therefore, the number of parts is reduced, making it easier to reduce costs.

As described in detail above, in the compatible disc player according to the present invention, the first and second 21! The turntables are mounted concentrically, and the outer second turntable is moved along the spindle from a disk carrying position to a non-disk carrying position, thereby retreating from the movement path of the pickup.

Therefore, it is sufficient to provide only one set of disk clamp mechanisms for both turntables, reducing the number of parts and reducing costs. Moreover, since both turntables are provided concentrically, setting the position of one turntable with respect to the carriage carrying the pickup means necessarily sets the position of the other turntable. Therefore, the position adjustment mechanism for setting the relative positions between the respective parts is simplified, making it easier to reduce costs.

Furthermore, since both turntables are provided concentrically in this way, the carry (132) for carrying an optical video disc and the carry (133) for carrying a compact disc are separate, as in a conventional disc player. The compact disk holding carry (133) is moved to the other carry (132)! There is no need to configure the structure to close. This also makes it easier to reduce costs.

Further, in the compatible disc player according to the present invention, the disc is provided so as to be able to reciprocate between a protruding position and a non-protruding position in the direction of the rotational axis of the spindle, and to be able to come into contact with the disc suppressing member (63) of the disc clamp mechanism. When the second turntable is moved to the non-protruding position, the second turntable is moved to the non-disc holding position fl! J
A member (adapter 14C1 moving member 65) is provided.

That is, the pressing member of the disc clamp mechanism presses the moving member through the disc, thereby moving the second turntable to the disc non-supporting position. Therefore, there is no need to provide a special drive means for moving the second turntable to the non-disk holding position, and the number of parts is reduced, making it easier to reduce costs.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a perspective view showing the entire compatible disc player according to the present invention, FIG. 2 is a plan view of a part of the internal structure of the disc player, and FIG. 3 is related to FIG. 11 is a sectional view showing a state in which an optical video disc is clamped, FIG. 4 is a view taken along the IV-rV arrow in relation to FIG.
7 and 7 are respectively a plan view and a side view of the disc transport mechanism, FIG. 8 is a diagram for explaining the disc clamp am, FIG. 9 is a diagram for explaining the operation of the disc player, and FIG. 10 is a diagram for explaining the operation of the disc player. Figure 1 shows another embodiment of the present invention.
1 to 14 are diagrams for explaining a conventional compatible disc player. Explanation of symbols of main parts 5...Disc support section 11...Variable rotation speed motor 11h...Spindle 12...First turntable 13... ... Compact disc 14 ... Second turntable 14c ... Adapter 15 ... Optical video disc 16 ...
- Carriage 63... Pressing member 65... Moving member

Claims (1)

[Claims] a rotational drive source including a spindle; a first turntable attached to the spindle; a carriage carrying a pickup means and moving along a plane including a disk carrying surface of the first turntable; The first turntable is mounted concentrically with the first turntable and movable between a disk carrying position and a non-disk carrying position in the direction of the rotational axis of the spindle, and is spaced apart from the moving path of the carriage when in the non-disk carrying position. 2 turntables, and a disk clamp mechanism including a pressing member that presses the disk against the first and second turntables, and is provided movably between a protruding position and a non-protruding position in the direction of the rotation axis. A compatible disc player comprising: a moving member that moves the second turntable to the non-disc holding position when the second turntable is moved to the non-disc holding position.