JPS63155455A - Compatible disk player - Google Patents

Abstract

PURPOSE:To miniaturize, especially, to thin a whole disk player by providing concentrically two kinds of turntables, and interposing and installing an intermediate member between a first pressing member and a second pressing member. CONSTITUTION:With respect to a shared rotational driving source containing a spindle 11h, two kinds of the first and the second turntables 12, 14 are provided concentrically, and also, so that the second turntable 14 of the outside is always separated from the moving path of a pickup, and provided with the first pressing member 63 by which a disk clamp mechanism presses the disk against the first turntable 12, at least one intermediate member 65 for supporting this first pressing member 63 so as to be freely rotatable, and also, freely movable in the rotary axis direction of the spindle 11h, and the second pressing member 64 for supporting this intermediate member 65 so as to be freely movable in the rotary axis direction concerned and pressing the disk against the second turntable 14. Since both turntables are provided concentrically, the player can be miniaturized easily, and also, the cost can be reduced.

Description

[Detailed description of the invention] Technical field The present invention relates to compatible disc players.

BACKGROUND ART 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 center hole size and rotation speed. A conventional example of a compatible disc player according to FIGS. 12 to 15 is shown.

As shown in FIG. 12, 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. A group of switches 107 are provided on the front panel 103 to operate the disc player.

A chassis 108 is provided within the housing 102, and a base member 110 shown in FIG. 13 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 1131 has a diameter of approximately 30cI11 or 20c+
It is for rotationally driving the optical video disc 114 of No. 1, and is suitable for high-load, high-speed rotation. A carriage 115 carrying an optical pickup means is arranged behind the first spindle motor 113, and
Disk supporting surface 113a of first spindle motor 113
The base member 110 is guided by a guide shaft 116 provided on the base member 110 so as to move along a plane containing the base member 110 .

Also provided on the base member 110 is a second spindle motor 119 for rotating a compact disc 118 having a diameter of approximately 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. 13 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. Further, the above-mentioned disk holding section 105 carries a disk to be played and conveys it onto each spindle motor, and is provided with a mechanism (not shown) for moving this disk holding section 105. However, the disk holding section 10
5 is the disk supporting surface 11 of the first spindle motor 113
It is moved in two directions: a direction parallel to 3a (direction of arrow Y and its opposite direction) and a direction perpendicular to the direction (direction of arrow 2 and its opposite direction).

As shown in FIG. 12, 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 118 that is movable in the front-rear direction (direction of arrow Y and the opposite direction) with respect to the first carry 132 and that is to be ME on the second spindle motor 119
It has a second carry 133 that carries a. Two circular shallow recesses 132a and 132b are formed concentrically on the upper surface of the first carrier 132, into which optical video discs each having a diameter of about 30 cm and a diameter of 20 marks are inserted.

Further, the upper surface of the second carrier 133 has a circular recess 133a into which the compact disc 118 can be inserted, and a circular recess 133a with a diameter of 20 mm.
A portion 13 that can be continuous with the circular recess 132b provided in the first carrier 132 for a cm optical video disc.
3b are 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. 14, 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 back, 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 disc-shaped first pressing member 163 and a second disc-shaped pressing member 164, each of which cooperates with one of the discs 3 and 119 to perform a disk clamping action, are rotatably attached.

The above-described first and second pressing members 163, 164, holding members 161, 162, etc. that hold them constitute a disc clamping mechanism that clamps the disc conveyed 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. 13) is played will be described. As shown in FIG. 12, 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. 15, 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. 13, 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. 13) 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 movement limit position, the carriage 115 and the first spindle motor 113 are stopped, and the disk holding section 105 moves in the exact opposite manner to the above. The optical video disc 114 is then protruded out of the housing 102 and retrieved.

The disc to be played is compact disc 118 (first
(see FIG. 3), the operation is almost the same as in the case of the optical video disc 114 described above. When the aforementioned determining 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. 14, two sets of disc clamp mechanisms are provided for each spindle motor. (In particular, the two supporting each pressing member 163, 164
(regarding two large holding members 161 and 162) are provided. Therefore, the number of parts is large, leading to an increase in the size and cost of the disk player as a whole. Further, a carriage 11 carrying an optical pickup means
5, it is necessary to set the positions of the two parts of both spindle motors 113 and 119 with high precision and individually, and the position adjustment mechanism for setting the relative positions between these parts becomes complicated. This also increased costs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and its object is to provide a compatible disc player that is easy to downsize and inexpensive.

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 first pressing member in which a second turntable is provided concentrically and a second outer turntable is always spaced apart from a moving path of the pickup, and a disk clamp mechanism presses the disk against the first turntable; at least one intermediate member supporting the first pressing member rotatably and movably in the direction of the rotation axis of the spindle; and supporting the intermediate member movably in the direction of the rotation axis to move the disk to the second turn. It is characterized by comprising a second pressing member that presses against the table.

Embodiments 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 6 is provided on the base member 10. As shown in FIGS.

The motor includes a thrust bearing 11a, a housing 11b,
A stator portion consisting of a core 11c, a radial bearing lie, a yoke 11g, and a spindle 11h.

The rotor section includes a rotor magnet lli.

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

As shown in FIG. 3, this first turntable 12
carries a compact disc 13 (also shown in FIG. 1) having a diameter of 12 cm.

The spindle llh also has a second turntable 14 arranged concentrically with the first turntable 12 and in a direction perpendicular to its disk carrying surface (in the direction of arrow Z and its opposite direction)
It is attached with a predetermined step difference from the first turntable 12. As shown in FIG. 4, the second turntable 14 has a diameter of 30C111 or 20C.
It supports an optical video disc 15 (also shown in FIG. 1) of 1.5 m, and is rotated together with the first turntable 12 by a variable rotation speed motor 11.

A protrusion 12c is formed on the disk supporting surface 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, at the center of the second turntable 14 is an adapter 1 that fits into the center hole of an optical video disc 15 (shown in the first diagram) to center the optical video disc.
4c is provided separately from the main body 14d of the second turntable.

As shown in FIG. 2, FIG. 5, and FIG. 6, the rotation speed variable motor 11, the first and second turntables 12, 14
is mounted on a substantially cylindrical support member 16. This support member 16 is held by a cylindrical guide member 17 so as to be movable in the vertical direction (in the direction of arrow Z and the opposite direction).

The support member 16 has a rack portion 16a along its moving direction.
is formed, and a gear 18a meshes with the rack portion. As shown in FIG. 2, the gear 18a is connected to the output shaft of a motor 18g via other gears 18b, 18c, pulleys 18d, 18e, and a belt 18f. Therefore, by rotating the motor 18g in forward and reverse directions,
Support member 16 and its mounting parts (variable rotation speed motor 11.
The first and second turntables 12.14) are rotated in the vertical direction (
It is caused to reciprocate in the arrow Z direction and the opposite direction).

As shown in FIGS. 2 to 4, a carriage 19 carrying an optical pickup means is disposed behind the first and second turntables 12. It is guided by a guide shaft 20 (shown in the second figure) provided on the base member 10 to move back and forth along a plane including the support surface.

Further, as shown in FIG. 2, a motor 21. Pulley 2
2. Belt 23. A drive mechanism consisting of a pulley 24, a worm 25, etc. is provided, and the carriage 19 is moved by the drive mechanism.

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 7, 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 at the center of the disk supporting section 5.

As shown in FIGS. 7 and 8, the disk holding section 5
A pair of rectangular plate-shaped support members 4 sandwiching the
4, and the disk holding part 5 is moved in a direction parallel to each disk holding surface of the first and second turntables 12.14, in this case, in a front-back direction (direction of arrow Y and the opposite direction thereof). ) is movably supported.

As is clear from FIGS. 7 and 8, a pair of pins 44a are provided on the outer surface of the support member 44 and are spaced apart in the front-rear direction.
are provided in a protruding manner, and both bottles are movably inserted into an L-shaped guide hole 8a formed in the chassis 8.

In other words, the support member 44 is adapted to move along the L-shaped guide hole. The L-shaped guide hole 8a is
A parallel portion 8b extending parallel to the disk supporting surfaces of the first and second turntables 12.14, and a vertical portion 8C extending perpendicularly to each of the disk supporting surfaces continuously from the rear end of the parallel portion. Consists of. A pair of left and right rectangular plate-shaped moving members 45 are provided so as to sandwich the L-shaped guide hole 8a together with the support member 44.

Each moving member 45 is attached to the chassis 8 so as to be movable in the front-rear direction (the direction of arrow Y and the opposite direction). The pins 44a protruding from each support member 44 are
Each moving member 4 is inserted through the L-shaped guide hole 8a of the chassis 8.
It is slidably engaged with a cam hole 45a formed in 5. The cam hole 45a is connected to the first and second turntables 12.1.
A parallel portion 45b extending in a direction parallel to the disk supporting surface of No. 4, in this case, the front-rear direction, and a parallel portion 45b extending upward (in the direction of arrow 2) continuing from the rear end of the parallel portion and toward the rear (counter to the direction of arrow Y). 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 support portion 5 supported by the support member move in the vertical direction, that is, the first and second turntables 12°14. The cam hole 45a is formed to move in a direction perpendicular to the disk supporting surface.

As is clear from FIG. 8, rack portions 45e are formed at the lower ends 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. A pulley 49 with an integrally molded gear portion 49a that meshes with the gear 48. It is connected to the output shaft of a motor 52 via a belt 50 and a small pulley 51. Although not shown, the gear 47
The other end of the shaft 53 fitted to one end reaches the vicinity of the other moving member 45, and a gear that meshes with a rack formed on the moving member is fitted to the other end. It is worn. 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.

In addition, the drive means, each support member 44, and the retesting member 4
5, the L-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. Further, so that the support member 44 is moved together with the moving 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 L-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
4 to the chassis 8, and a lock/release means for locking only the direction is provided.

These locking means, locking/releasing means, the disk holding part 5, the chassis 8, the drive mechanism for moving the disk holding part laterally (described above) including the moving member 45, etc., and the peripheral small parts related to these, 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. 8, another rack section 45f is formed at the lower end of the moving member 45 behind the rack section 45e. A gear 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 player includes a potentiometer 5.
A comparator is built in to compare the terminal voltage of No. 5 with the reference voltage. As also shown in FIG. 8, the front and rear ends of the movable member 45 are engaged with the front and rear ends of the chassis 8, respectively, so that the movable member, and hence the disk carrier 5, can be moved to its starting position. A pair of detection switches 57 and 58 are attached to detect the movement end position. These potentiometers 55. comparator(
(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 the disc clamp mechanism that clamps the disc transported to the performance position.

As shown in FIGS. 7 and 8, a substantially rectangular plate-shaped holding member 61 extending in the left-right direction is provided within the housing 2.
is provided. The holding member 61 is swingably attached to the support member 44 via the pin 44c 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. 9, on the lower surface of the holding member 61, there is a first disk-shaped first turntable that cooperates with the first and second turntables 12, 14 to perform a disk clamping action.
A pressing member 63 and a cylindrical second pressing member 64 are rotatably attached. However, the second pressing member 64 is rotatably held by the holding member 61, and the first pressing member 63 is attached to the second pressing member 64 by a cylindrical intermediate member 65.
It is attached via. The intermediate member 65 is supported by the second pressing member 64 so as to be movable within a predetermined range in the direction of the rotation axis of the spindle 11h (shown in FIG. 3, etc.), that is, in the vertical direction (direction of arrow Z and its opposite direction). Further, the first pressing member 63 is supported by the intermediate member 65 so as to be rotatable and movable within a predetermined range in the direction of the rotation axis of the spindle llh.

As shown in FIGS. 3 and 4, the second pressing member 64
is provided with an annular magnet 64a that attracts the magnetic plate 14g provided on the disk holding portion of the second turntable 14 and applies a clamping force thereto. Further, the first pressing member 63 is provided with an annular magnet 63a which is made of a magnetic material and is attracted to the disk supporting surface of the first turntable 12 to apply a clamping force.

Each of the above-described pressing members 63 and 64, and an intermediate member 65,
The holding member 61 that holds these and the peripheral small members related to these constitute a disc clamping mechanism that clamps the disc transported to the performance position, that is, each turntable.

As shown in FIG. 3, the first pressing member 63 and the intermediate member 65 are housed in the second pressing member 64 when the compact disc 13 is not clamped and when the compact disc 13 is clamped. By providing the member 65, the overall height of each member when accommodated is:
Hl (shown in the third diagram) can be kept small.

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 Figure 0.

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. 7-9.

When the disk carrier 5 reaches this position, a predetermined detection switch is activated, and the motor 52 shown in FIG. 8 starts rotating. At this time, the disk support *5 is locked to the support member 44 by the locking means, and begins to be pulled in integrally. Therefore, the disk holding section 5
moves rearward (counter to the direction of arrow Y) and is completely housed within the housing 2, and then moves downward as shown in FIG. Therefore, the optical video disc 15 is the fourth
It is placed on the second turntable 14 as shown in the figure. Thereafter, as shown in FIG. 6, the support member 16 is moved upward (in the direction of arrow 2) and the disk is clamped onto the second turntable. At this time, the diameter of the disc to be played is determined by a determining means (not shown). In this state, the motor 52 stops, and the disc can be played.

When the loading of the optical video disc 15 is completed, the second turntable 14 is rotated together with the first turntable 12, the carriage 19 (see FIGS. 2 and 3) begins to move, and disc playback begins. However, the rotation speed of each turntable is the same as that of the second turntable 1.
4.

When a detection switch (not shown) detects that the performance has ended and the carriage 19 has reached its movement limit position,
The carriage 19 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. 7 to 9 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, and as shown in FIG. 1 is placed on the turntable 12 and clamped. After this,
The first turntable is rotated together with the second turntable 14 at a rotation speed suitable for the first turntable, and disc 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).

In addition, in the compatible disc player, as shown in FIGS. 5 and 6, a variable rotation speed motor 11 is used.
, the first and second turntables 12.14 are the support member 1
The variable rotation speed motor 11 is mounted on the chassis 10 (see Fig. 2) so that the entire motor can be moved up and down (in the direction of arrow Z and the opposite direction).
It is also possible to have a configuration in which only the first and second turntables 12, 14 are moved while being fixed at the top.

FIG. 11(a) and 11(a) show 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 10.

As shown in FIG. 11, in this disc player, a plurality of cylindrical intermediate members 68 to 7o are interposed between the first and second pressing members 63, 64. As a result, when the disc is not clamped and the compact disc 13
Height of each member as a whole when clamped: H
2 (see FIG. 11 (ω)) is further reduced compared to the configuration shown in FIG. 3.

Effects of the Invention As detailed above, in the compatible disc player according to the present invention, two types of turntables, first and second, are arranged concentrically with respect to a common rotational drive source including a spindle, and The turntable is provided so as to be always spaced apart from the moving path of the pickup, and a disk clamp mechanism includes a first pressing member that presses the disk against the first turntable, and a first pressing member that is rotatable and configured to rotate the spindle. It includes at least one intermediate member movably supported in the axial direction, and a second pressing member that supports the intermediate member movably in the rotation axis direction and presses the disk against the second turntable.

In this way, since the two types of turntables are arranged concentrically, it is only necessary to provide one set of disk clamp mechanisms (especially regarding the holding member 61) for both turntables, which reduces the number of parts and allows both turntables to be used together. In addition to the fact that the rotary drive source is shared, the overall size of the disc player can be easily reduced, and costs can be reduced. 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 (13B) for carrying a compact disc are separate, as in a conventional disc player. There is no need to provide a structure in which the compact disc holding carry (133) is moved relative to the other carry (1:32). This also makes it easier to reduce costs.

Further, in the compatible disc player according to the present invention, as described above, an intermediate member is interposed between the first pressing member and the second pressing member. When not clamping a disc and when clamping a compact disc (Fig. 3, Fig. 11)
(see ω), the first pressing member and the intermediate member are housed within the second pressing member, but by providing this intermediate member, the height dimension of each member as a whole when housed (see 11 (dimensions indicated by H1 and H2, respectively, in ω) can be kept small. Therefore, it is easy to make the disk player as a whole smaller, especially thinner.

[Brief explanation of the drawing]

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.
- ■A cross-sectional view showing a state in which a compact disc is clamped, Figure 4 is a diagram showing a state in which an optical video disc is clamped, and Figures 5 and 6 are for explaining the mechanism for moving each turntable. , FIG. 7 and FIG. 8 are respectively a plan view and a side view of the disc transport mechanism, FIG. 9 is a diagram for explaining the disc clamp mechanism, and FIG. 10 is a diagram for explaining the operation of the disc player. Figure, 1st
Figure 1 (ω, mountain) is a diagram showing another embodiment of the present invention;
1 to 15 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 15 ... Optical video disc 16 ...
- Carriage 63...First pressing member 64...Second pressing 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; a second turntable installed concentrically with the first turntable and spaced apart from the moving path of the carriage; and a disk clamp mechanism that presses a disk against the first and second turntables, the disk clamp The mechanism includes a first pressing member that presses the disk against the first turntable, at least one intermediate member that supports the first pressing member rotatably and movably in the rotation axis direction of the spindle, and the intermediate member. a second pressing member that supports the disc movably in the direction of the rotation axis and presses the disc against the second turntable.