JPH046662A - Disk player - Google Patents

Abstract

PURPOSE:To prevent a reproduction mechanism from being abutted onto a large sized disk at the reproduction of the large sized disk by using the large sized disk loaded on a rotary tray so as to block the displacement of a clamp mechanism to the clamp position. CONSTITUTION:A clamp mechanism 14 and a reproduction mechanism 10 are interlocked with each other in order to operate the clamp mechanism 14 and the reproduction mechanism 10 in an excellent timing and to simplify a drive mechanism driving respectively the clamp mechanism 14 and the reproduction mechanism 10. Moreover, when a large sized disk is placed on a rotary tray 3, when the clamp mechanism 14 is displaced from the non-clamp position to the clamp position, the clamp mechanism 14 is abutted onto an outer circumfer ence edge of the large sized disk by a circumference 24 with no CD loading part 5 of the rotary tray 3 formed thereto and a start shaped central part 25 and the displacement of the reproducing mechanism 14 to the reproducing position is not implemented. Thus, the possibility of elevating the reproduction mechanism in error, components of the CD use reproduction mechanism is abutted onto an analog record disk and giving a damage to the analog record disk is precluded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention is capable of reproducing a large-diameter disk that can be placed on a rotating tray, and also plays a plurality of small-diameter disks that can be placed on the rotating tray. This invention relates to a disc player device that can automatically replace small-diameter discs.

(Example) Conventional technology A disc autochanger device that sets a plurality of discs and automatically changes the disc to be played is known.Currently, such a disc autochanger device uses a CD-type optical disc (CD). For example, as shown in Japanese Patent Application Laid-Open No. 62-239375, such a disc autochanger device is capable of rotating a tray around a rotating shaft, A plurality of disc mounting parts on which discs are placed at the center are provided radially on the tray, and by rotating the tray, a desired disc mounting part faces a playback mechanism provided with a turntable, an optical pickup, etc. A rotary type disc autochanger device is known that moves to a playback position and plays the disc placed on the disc loading section.Such a rotary type disc autochanger device changes the disc to be played. As mentioned above, the operation is as simple as rotating the tray, so compared to the type where multiple discs are stored and the desired disc is taken out and played, the disc speed is lower. This is advantageous in shortening the time required for replacement, has a simple structure, and is advantageous in terms of manufacturing cost.

By the way, the rotary disc auto changer device disclosed in the above-mentioned publication is of a so-called front loading type in which the tray can be extended from the front of the cabinet, and discs are loaded and unloaded while the tray is extended from the cabinet. In this case, a mechanism for sliding the tray is required, which increases costs. For that reason,
As a popular product, rotary disc auto changer devices are equipped with a lid that can be opened and closed on the cabinet to cover the top of the rotating tray, and by opening the lid, discs can be loaded and removed from above. A method has been proposed.

The above-mentioned top-open rotary disc autochanger can load and unload multiple discs at the same time without rotating the tray, but when playing a disc, the disc is pressed onto the turntable. The clamping mechanism for holding the disc covers the upper part of the disc mounting section in the playback position, so when loading or unloading a disc on the covered disc mounting section, rotate the tray so that the clamping mechanism It was necessary to make sure that the disk was not located above the disk mounting section, making it troublesome to attach and detach the disk.

Therefore, if the clamp mechanism is rotatably supported in the cabinet and can be avoided from the position where the disc mounting part of the tray is formed, the disc mounting part at the playback position can be mounted without rotating the tray. It is also possible to attach and detach the disk in the storage section.

By the way, CD players are now widely used in Japan in place of so-called record players, which mechanically read analog records recorded with analog signals using a single pickup.

However, there are cases where analog records that the user already owns are played back, and in many countries overseas, CD players are not yet widespread and record players are the main audio source device.

Therefore, a record player is still necessary, and a stereo set requires both a CD player and a record player. Therefore, the applicant of the present application first made it possible to use the tray of a rotary autochanger device for a CD player as a turntable for analog records, and also provided a set of pickups for the CD player.
We are proposing a composite disc player device that can play not only D but also analog records.

By the way, a rotary disc autochanger device has a playback mechanism that can move up and down, and when the tray rotates, the playback mechanism is moved to a lowered non-playback position so that the rotation of the tray cannot be interfered with, and When playing a CD, it is necessary to move the playback mechanism to a raised playback position, mount the CD on a turntable provided in the playback mechanism, and place an optical pickup provided in the playback mechanism at a predetermined position. be. Therefore, in the above-mentioned composite disc player, when playing a CD, it is necessary to move the clamp mechanism to the clamp position and also to move the playback mechanism to the playback position. On the other hand, when reproducing an analog record, it is necessary to displace the clamp mechanism to a non-clamp position and also to displace the reproduction mechanism to a non-reproduction position.

Therefore, in the composite type disc player device, the clamp mechanism and the playback mechanism can be operated at good timing by displacing the clamp mechanism and the playback mechanism in conjunction with each other.

(c) Problems to be Solved by the Invention However, in a composite type disc player device, if an operation is performed to play a CD by mistake with an analog record placed on the tray, the playback mechanism is raised. As a result, components of the reproducing mechanism such as a CD turntable or optical pickup come into contact with the analog record, and there is a risk of damaging the analog record or the components of the reproducing mechanism.

(d) Means for Solving the Problems The present invention is a disc player device made in view of the above points, which includes a turntable for rotating a /JX diameter disc and a device for reading out signals recorded on a small diameter disc. a pickup, a playback mechanism supported so as to be movable between a playback position in which a small-diameter disc is played and a non-playback position, and a chuck member for pressing the small-diameter disc onto the turntable. At the same time, between a clamp position in which a small-diameter disc mounted on a mounting section that has been moved to a playback position is crimped and held on the turntable, and an unclamped position in which the mounting section is removed from the position where it is formed. and a clamp mechanism displaceably supported, and configured to displace the reproduction mechanism in conjunction with the displacement of the clamp mechanism, and when the clamp mechanism is displaced to the clamp position, the clamp mechanism is moved to the rotating tray. The clamp mechanism is provided with a portion that is lower than the upper surface of the large-diameter disk placed on the rotating tray so as to come into contact with the large-diameter disk placed on the rotating tray.

(*) Function The present invention operates the clamp mechanism and the regeneration mechanism at good timing, and simplifies the drive mechanism that drives the clamp mechanism and the regeneration mechanism, respectively. In addition to making the mechanism work together,
When the large-diameter disk is placed on the rotating tray, when the clamp mechanism is completely displaced from the non-clamped position to the clamped position, the clamp mechanism comes into contact with the outer peripheral edge of the large-diameter disk. At this time, the reproducing mechanism is prevented from being displaced to the reproducing position.

(v) Embodiment FIG. 1 is a plan view showing an embodiment of a disc player device according to the present invention, in which (1) is a cabinet, (2) is a center shaft supported by the cabinet (1), and (3) is a plan view showing an embodiment of a disc player device according to the present invention.
) is rotatably attached to the cabinet (1) about the center shaft (2), and has a concave CD mounting portion (4) on which the CD (4) is placed.
5) is a rotary tray in which five rotary trays are arranged radially around the center shaft (2), and (6) is a rotary tray (
A rim (7) is formed concentrically with the rotating tray (3) on the lower surface of the rotating tray (3), and a pulley (8) is fixed to the rotating shaft (7a).
6) A motor that drives the rotary tray (3) via a rubber belt (9) stretched between them;
4); a CD turntable (11) for rotating the CD; an optical pickup (12) for reading out signals recorded on the CD (4);
a reproducing mechanism (14) for reproducing CDs provided at a predetermined position within the cabinet (1), the reproducing mechanism (14) facing the reproducing mechanism (10); This is a clamp mechanism for pressing and holding the CD placed on the CD placing portion (5) that has been moved to the playback position on the CD turntable (11).

The CD mounting part (5) of the rotating tray (3) is used for mounting the CD (4) on the CD turntable (11) and for placing the CD (4) on the CD turntable (11), and for loading the CD with the light beam from the optical pickup (12).
A hole (15) has been formed in each case to trace D (4>).

Further, the regeneration mechanism (10) is supported so as to be movable up and down with the shaft (16) as the central axis of rotation, and the regeneration mechanism (10) is
10) is raised, the CD turntable (11>
The CD mounting surface of is projected above the CD mounting portion (5>) through the hole (15).The playback mechanism (10)
As shown in FIG. 2, which is a partial sectional view taken from the axial direction of the shaft (16), the shaft (16) is in a lowered state except when a CD is being played.

On the other hand, as shown in FIG. 3, which is a cross-sectional view taken along the line 0-0 in FIG. The clamp mechanism (b) is provided with a clamp plate (19) supported rotatably in the vertical direction about a shaft (18). The clamp plate (19) has a CD (
A chuck member (20) for crimping and holding 4) on the CD turntable (11) is rotatably and loosely fitted, and the clamp plate (19) is formed on the lower surface of the clamp plate (19). The hemispherical projection (21) is connected to the rotation shaft (17).
) is placed on a guide protrusion (22) formed on a part of the cabinet (1) around the cabinet (1). The guide protrusion (22) has a clamp mechanism (
14) is displaced to the clamp position shown by the solid line in FIG. 1, the portion that can be brought into contact with the protrusion (21) is made low, and the clamp mechanism (14) is moved to the non-clamp position shown by the dashed line in FIG. The portion of the protrusion (21) that comes into contact with the protrusion (21) is made to gradually become higher as the protrusion (21) is displaced.

Therefore, the position of the chuck member (20) gradually becomes higher as the clamp mechanism (14) is displaced from the clamp position to the non-clamp position.
4) to the non-clamping position, the chuck member (20) is prevented from colliding with a high part of the outer periphery of the rotary tray (3), and the rotational displacement of the clamp mechanism (14>) is not inhibited. .

By the way, the peripheral part (24) where the CD mounting part (5) of the rotating tray (3) is not formed and the star-shaped central part (25)
is a support part for mechanically supporting an analog record (26) on which an analog signal is recorded, and is one step higher than the CD mounting part (5>). A viscoelastic resin or rubber mat (not shown) is attached to the center to hold the analog record (26) and to absorb the vibrations of the analog record (26). The shaft (2> is formed to protrude from the upper surface of the rotating tray 3),
Its diameter corresponds to the center hole of the analog record (26).

In addition, the cabinet (1>) is supported so as to be horizontally rotatable about a vertical axis (27), and is also supported on a horizontal axis (27).
8) The tone arm (
A pickup mechanism (31) is provided which includes a tone arm (29) and a tilted cartridge (30) provided at the tip of the tone arm (29).

The rotary tray (K), clamp mechanism (Dan), and pickup mechanism (31) are mounted on a hinge (32) on the back of the cabinet (1), as shown in the side view of the model in Figure 4.
), which is attached so as to be openable and closable, and the lid (33) is made of a transparent synthetic resin material, so that the inside can be seen even when the lid is closed. It is made like this.

Next, a method of using the CD autochanger device configured as described above will be explained. Of course, when setting a CD or an analog record, the lid (33) is left open (or removed).

First, when playing CDs, place 1 to 5 CDs (depending on the number of CDs to be played) on the CD loading section of the rotary tray.
5). In this case, the clamp mechanism (14) is rotated to the non-clamping position as shown by the dashed line in FIG. 5) Make sure that a CD can be placed on it.

After the CD (4) is placed on the desired CD placement portion (5), the clamp mechanism (14) is rotated to the clamp position shown by the solid line in FIG. Here, the clamp mechanism (
The chuck member (20) of 14) is as shown in FIG.
It is arranged so that the bottom surface is higher than the top surface of the CD (4) placed on the CD placement section (5). In addition, since the regeneration mechanism (10) has been completely lowered as shown in Figure 2,
The rotary tray (3) can be rotated even when the clamp mechanism (14) is displaced to the clamp position. Therefore, when selecting a CD to play, allow the rotary tray (D) to rotate with the clamp mechanism (B) displaced to the clamp position, and place the desired CD mounting portion (5) on the rotating tray (D).
Playback mechanism (10)
Move it to the playback position opposite to. In this case, if the motor (7) is energized and the pulley (8) is rotated, the rotation of the pulley (8) is transmitted to the rim (6) of the rotating tray (≦) via the belt (9). Therefore, the rotating tray (
The disc can be rotated, and the desired CD can be moved to the playback position.

When the desired CD is moved to the playback position, the playback mechanism (10) is then raised. The regeneration mechanism (1) is raised by rotating in the direction of arrow A in FIG. 2 using the shaft (16) as a rotation axis. As the rise continues, eventually
CD turntable (11) The protrusion in the center is for CDs (4
), and the CD (4) is fully inserted into the center hole (4a) of the C
It is placed on the D turntable (11).

The reproducing mechanism (10) is further raised until the upper surface of the CD (4) is in contact with the lower surface of the chuck member (20), and then the raising of the reproducing mechanism (10) is stopped. . In this state, the CD (4) is placed on the CD mounting section (5).
The CD turntable (11) is crimped and held by a chuck member (20). Therefore, when the spindle motor (34) is energized and the CD turntable (11) is rotated, the CD (
4>, the CD (4) can be played back by the optical pickup (12).

Therefore, after lowering the playback mechanism (10) and rotating the rotating tray (3) to move the CD (4) placed on the CD placement section (5) to the playback position, the playback mechanism (10) and press and hold the CD (4) on the CD turntable (11) repeatedly, thereby sequentially loading a plurality of CDs placed on each CD mounting section (5). It can be played.

On the other hand, when reproducing an analog record, the clamp mechanism (14) is rotated to the non-clamping position and removed from the position where the analog record is stored. Then, insert the center hole of the analog record (26) into the center shaft (2) and place the analog record (26) on the rotating tray (3).
Place it on. Here, since the regeneration mechanism (10) is configured to descend before rotating the clamp mechanism (14) to the non-clamping position, the state in which the clamping mechanism (B) is rotated to the non-clamping position In the rotating tray (
)) can be rotated.

Therefore, the rotary tray (3) is rotated, the analog record (26) is rotated, and the tone arm (2) is rotated.
9) so that the analog record (26) is traced by the cartridge (30), the analog record (26) is traced by the pickup mechanism (31).
can be played.

The rotation of the rotary tray (3) when rotating the analog record (26) is controlled by the motor (7) which serves as a drive source for rotating the rotary tray (3) when selecting a CD to play.
).

Further, the CD mounting portion (5) of the rotating tray (3) is formed one step lower than the support portion on which the analog record (26) is placed, and the step of the CD mounting portion (5) is C
Since the thickness is larger than that of D, the CD is placed on the CD mounting section 5.
The analog record (26) can be placed on the rotary tray (3) while being placed on the rotary tray (3).

By the way, the present invention is characterized in that the reproducing mechanism (10) and the clamping mechanism (14) can be moved in conjunction with each other to cause displacement, and this point will be explained in detail next.

FIGS. 5 and 6 show plan views of the drive mechanism that drives the reproduction mechanism (10) and the clamp mechanism (14), with the clamp mechanism (14) being displaced to the clamp position and the non-clamp position, respectively. In figure 0 showing (35)
(36) is a motor serving as a driving source, and (36>) is a first pulley (37) fitted on the rotating shaft (35a) of the motor (35). The second pulley (39) to be connected is the second pulley (
(37) is formed coaxially with the first gear; (40) is the first gear formed coaxially with the first gear;
The gear (39) meshes with the second gear, (41) is the second gear.
The third gear (42) formed coaxially with the gear (40) has a gear portion (42a) with which the third gear (41) is meshed, and a spiral first cam on the upper surface. (
A cam member (43) is formed, and (44) is rotatably supported around a shaft (45), and a guide pink 46) that can be guided by the first cam (43).
and a first rotating member (49) formed with a drive pin (48).
) is rotatably supported around the shaft (50),
The second rotating member is fixed to the clamp mechanism (moon) and has a hole (51) into which the drive pin (48) of the first rotating member (44) is inserted.

As shown in FIG.
A second cam (60) is provided with a groove formed around the side surface with a slope so as to be connected to each other by the regeneration mechanism (10). A support portion (61) formed at one end of the chassis is inserted, and one end of the regeneration mechanism (10) is fully supported.

Also, a substrate (not shown) on which the cam member (42) is pivotally supported.
, the first and second switches (62) and (63) are fixedly fixed, and the first and second switches (62) and (63) are connected to projections formed on the back surface of the cam member (42). (64) so as to be switched according to the displacement state of the cam member (42).

By the way, the hole (51) of the second rotating member 49)
The diameter of the drive pin (48) of the rotating member (44) is large compared to the diameter of the drive pin (48), and the drive pin (48) is formed in the hole (51).
) is inserted with plenty of room. Therefore, the first and second rotating members (44) and (49) are connected with each other with some play. Here, a spring member (52) having a coil spring in the center and protruding in substantially the same direction at both ends is attached to the second rotation member (49), and the drive pin (48) The spring member (52) can be interposed between both ends thereof. Therefore, the drive pin (48)
is regulated in position by the spring member (52).

Next, the operation will be explained.

The motor (35) is energized, and the rotating shaft (
35a), the rotation is caused by the second pulley (35a).
6), transmission belt (38), second pulley (37), first gear (39), second gear <40), and third gear (41)
), the speed is reduced and transmitted to the cam member (42).

Therefore, when the rotation shaft (35a) of the motor (35) is rotated clockwise, the cam member (42) rotates clockwise, while the rotation shaft (35a) of the motor (35) is rotated clockwise.
) in the counterclockwise direction, the cam member (42>
rotates counterclockwise.

By the way, when the cam member (42) rotates, the second cam (
The support part (61) of the regeneration mechanism (10)
) is displaced, so that the regeneration mechanism (10) displaces the shaft (1
6) It can be rotated up and down around the center. Here, when the cam member (42) rotates clockwise, the support portion (61) moves toward the lower flat portion (60b) of the second cam (60).
On the other hand, when the cam member (42) rotates counterclockwise, the support portion (61) is displaced toward the upper flat rough portion (60a). The displacement is completed from the upper flat rough portion (60a) toward the lower flat portion (60b). Therefore, when the cam member (42) rotates clockwise, the regeneration mechanism (10) rises and is displaced to the regeneration position, and when the cam member (42> rotates counterclockwise, it descends and displaces it. Displaced to the playback position.

Further, when the cam member (42) rotates, the first cam (43)
), the guide pin (46) is displaced according to the displacement of
The first rotating member (44) is rotated. When the first rotating member (44) rotates, the drive pin (44) rotates in accordance with the rotation.
8) is displaced. Here, when the drive pin (48) is displaced, no matter which direction the drive pin (48) is displaced, the drive pin (48)
comes into contact with the spring member (52). Then, when the drive pin (48) is completely displaced against the biasing force of the spring member (52), the second rotation member (49) is prevented from rotating. Therefore, the clamp mechanism (14) is rotated.
In this case, the second rotating member (49) includes a spring member (
52) generates a force in the direction opposite to the direction in which the drive pin (48) is displaced, so the clamp mechanism (14)
The spring member (52) is supported without wobbling by the force pressing the drive pin (48).

By the way, the first rotating member (44) is the first cam (43).
Due to the spiral shape of the cam member (42), the cam member (42) is rotated in a direction opposite to that of the cam member (42). The second rotating member (49) is
It is rotated in a direction opposite to the rotation direction of the first rotation member (44). Therefore, the clamp mechanism (14) is rotated in the same direction as the cam member (4), and when the cam member (name) rotates clockwise, the clamp mechanism (14) is rotated clockwise and the cam member (4) is rotated clockwise.
2) rotates counterclockwise, a trace of rotation will be left in the counterclockwise direction.

Now, the support part (61) of the regeneration mechanism (paddy) is the second cam (marked)
It is located at the lower flat part (60b) of the regeneration mechanism (
10) has been displaced to the non-reproduction position, and the second rotating member (49) has been displaced to the first position shown in FIG.
It is assumed that the clamp mechanism (14) is displaced to the clamp position shown by the solid line in FIG. In this state, the motor (35) is energized so that the rotating shaft (35a) rotates clockwise, and when the cam member (42) rotates clockwise, the regeneration mechanism (10) is raised. The reproduction mechanism (1
0) will eventually be displaced to the playback position.

Further, when the cam member (42) rotates clockwise, the second
The rotating member (49) is rotated clockwise. Here, when the second rotating member (49) is displaced to the second position shown in FIG. 6, the clamp mechanism (b) is displaced to the non-clamping position shown by the dashed line in FIG. ing. For that reason,
When the second rotating member (49) is rotated clockwise,
Eventually, the clamping mechanism (14) is displaced to the non-clamping position. At this time, the protrusion (64) of the cam member (42)
> brings the first switch (62) into a state where it can be switched. Therefore, by detecting the switching state of the first switch (62), it is detected that the clamp mechanism (14) has been displaced to the non-clamping position.

On the contrary, the 65th! In the state shown in A, the rotating shaft (35a
) rotates counterclockwise, the motor (35) is energized, and the cam member (42) rotates counterclockwise. Therefore, the reproducing mechanism (10) is lowered and is eventually displaced to the non-reproducing position.

Further, when the cam member (49) is completely rotated counterclockwise, the second rotation member (49) leaves a trace of rotation in the counterclockwise direction. Therefore, the clamp mechanism (14) is rotated counterclockwise, and the clamp mechanism (14) is eventually displaced to the clamp position. At this time, the second switch (63) is brought into a state where it can be switched by the protrusion (64) of the cam member (42). Therefore, by detecting the switching state of the second switch (63), it is detected that the clamp mechanism (14) has been displaced to the clamp position.

By the way, the first cam (43> and the second cam of the cam member (42)
Due to the relationship with the cam (60), when the clamp mechanism (14) is displaced from the non-clamp position to the clamp position, the reproduction mechanism (10) is not yet fully displaced to the reproduction position. That is, when the cam member (42) rotates clockwise, the clamp mechanism (14) is first displaced from the non-clamp position to the clamp position, and then the regeneration mechanism (10) is displaced from the non-clamp position to the clamp position.
) is displaced from the non-reproduction position to the reproduction position.
and the second cams (43) and (60) are formed in relation to each other. Therefore, when the reproducing mechanism (10) is displaced from the non-reproducing position to the reproducing position, the clamping mechanism (14) has been displaced to the clamping position, and the chuck member (20) is attached to the turntable (11>). Since the reproducing mechanism (10) is displaced to the opposite position, the CD turntable (11
) can be crimped onto the top.

On the other hand, when the cam member (42) rotates counterclockwise, the regeneration mechanism (10) is first displaced from the regeneration position to the non-regeneration position, and then the clamp mechanism (14) is displaced from the clamp position to the non-clamp position. In other words, when the clamping mechanism (14) is displaced to the non-clamping position, the reproducing mechanism (10) has already been displaced to the non-reproducing position. The displacement of the clamping mechanism (14) to the unclamped position is not prevented.

Next, a case will be described in which the clamp mechanism (14) is moved to the clamp position while the analog record (26) is placed on the rotary tray (3).

As shown in FIG. 3, the clamp mechanism (14) has a protrusion (23a) extending downward at the tip of the outer cover member (23).
The lower end of the protrusion (23a) is lower than the top surface of the analog record placed on the rotary tray (3). Therefore, when the clamp mechanism (agricultural) is displaced to the clamp position while the analog record (26> is placed on the rotary tray (3)), as shown in No. 7r5!J, the clamp mechanism ( The tip of the analog cord (26) touches the outer edge of the cord (26),
Displacement of the clamp mechanism (14) to the clamp position is inhibited.

Here, the control circuit system that controls the drive mechanism of the clamp mechanism (14) will be explained.

Figure 8 is a circuit block diagram showing the control circuit system.
5) is a motor drive circuit that supplies a drive current to drive the motor (35), and (66) is a first and second switch (62).
) and (63) are detected, and the clamp mechanism (1
(67) is an input detection means for detecting the operation state of the operation means (68) operated when performing a predetermined operation; (69) is the position detection means (66) for detecting the displacement position of ) and a control means (70) for controlling the motor drive circuit (65) according to the detection output of the input detection means (67); This is a timer means that starts counting time when an operation that causes displacement is performed. The timer means (70) can be reset when the position detection means (66) detects that the clamp mechanism (14) has been displaced to the clamp position, and the control means (69) is preset by the timer means (70). When the set time is counted, the motor drive circuit (65)
The motor drive circuit (65) is controlled so that a drive signal for rotating the motor (35) in the reverse direction is generated. Here, the set time is set to be longer than the time required when the clamp mechanism (circle) is smoothly displaced from the non-clamped position to the clamped position. The clamp mechanism (14
) to the clamping position is completed and the clamping mechanism (
14) can be stopped without being completely displaced in the opposite direction.

On the other hand, for some reason, the timer means (
70), when the set time is counted, the clamping mechanism (14) is displaced in the opposite direction and returned to the non-clamping position.

In the circuit block diagram of FIG. 8, the same numbers as those in the mechanical drawings indicate the same parts.

Now, with the analog record (26) placed on the rotary tray (3), if you accidentally perform an operation that causes the clamp mechanism (14) to start moving to the clamp position, for example, play a CD. Here, the operation is performed by the operation means (68), and the operation state is detected by the input detection means (67).

On the other hand, in this case, the position detection means (66) can detect the switching states of the first and second switches (62) and (63), and cannot detect that the second switch (63) is open. When the clamp mechanism (14) is in the clamp position, the clamp mechanism (14) is not displaced to the clamp position. At this time, if it is detected by the detection output of the input detection means (67) that the operation is to displace the clamp mechanism (14) to the clamp position, the control means (69>) controls the motor drive circuit (65) in accordance with the operation. ) is controlled, and the motor drive circuit (65) generates a drive signal that allows the motor (35) to rotate in order to displace the clamp mechanism (14) to the clamp position. starts displacement to the clamp position in response to the drive signal.

Further, when it is detected by the detection output of the input detection means (67) that the operation is to displace the clamp mechanism (dan) to the clamp position, the control means (69) controls the timer means (70).
) controls the start of time measurement. Therefore, the timing by the timer means (7o) is started at the same time as the clamp mechanism (14) starts to be displaced to the clamp position.

By the way, analog record (26) or rotary tray (β
), when the clamp mechanism (14) is displaced toward the clamp position, the clamp mechanism (14) will eventually reach the 5 position.
The tip of the ll' structure (14) is an analog record (26).
), and the displacement of the clamp mechanism (14) is stopped. Therefore, the clamp mechanism (14) is not displaced to the clamp position and the second switch (63) is not fully closed, but the timer means (7o) measures the set time, so the control means (69) motor (3)
The motor drive circuit (65) can be controlled so that a drive signal for rotating the motor 5) in the reverse direction can be generated.

The clamping mechanism (14) is therefore displaced back to the unclamped position.

In addition, in this case, since the clamp mechanism (14) is not displaced to the clamp position, the reproduction mechanism (lO) is not displaced to the reproduction position, which may damage the analog record (26) and the components of the reproduction mechanism <10>. I have nothing to say.

(g) Effects of the Invention As described above, the present invention provides a disk player device in which a clamp mechanism and a playback mechanism operate in conjunction with each other. Since the displacement of the large-diameter disk and the structure of the large-diameter disk and the playback mechanism can be prevented from coming into contact with the large-diameter disk, it is possible to prevent the playback mechanism that is not required when playing a large-diameter disk from coming into contact with the large-diameter disk. This has the advantage that damage to parts can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
A partial sectional view to explain how the reproduction mechanism shown in the figure is displaced,
Fig. 3 is a sectional view taken along the line 0-0' in Fig. 1, Fig. 4 is a model diagram showing the state in which the lid is attached, and Figs. FIG. 7 is a partial cross-sectional view for explaining the present invention, and FIG. 8 is a circuit block showing the control circuit system of the drive mechanism of the clamp mechanism. It is a diagram. Explanation of main drawing numbers (3)... Rotating tray, (10)... Playback mechanism,
(14)... Clamp mechanism, (42)... Cam member, (62) (63)... Switch, (65)...
...Motor drive circuit, (66)...Position detection means,
(69)...control means, (70)...timer means.

Claims (1)

[Claims] (1) A large-diameter disc can be placed on a rotatably supported rotary tray, and the large-diameter disc can be played, and a plurality of small-diameter discs can be placed radially around the rotation axis of the rotary tray. In a disc player device in which a small-diameter disc to be played can be replaced by rotating the rotary tray and changing the position of the small-diameter disc, the turntable for rotating the small-diameter disc and the signal recorded on the small-diameter disc are a playback mechanism that has a pickup for reading and is supported so as to be movable between a playback position in which the small-diameter disc is played and a non-playback position; and a chuck member that presses the small-diameter disc onto the turntable. and a clamp position in which a small-diameter disc placed on the mounting section moved to the playback position is held under pressure on the turntable, and a non-clamped position in which the mounting section is removed from the position where the mounting section is formed. a clamp mechanism displaceably supported between the clamp mechanisms, the reproduction mechanism being displaced in conjunction with the displacement of the clamp mechanism; A portion that is lower than the upper surface of the disk is provided, and when the clamp mechanism comes into contact with a large-diameter disk on the rotating tray and the displacement of the clamp mechanism to the clamp position is inhibited, the reproduction mechanism is displaced to the reproduction position. What is claimed is: 1. A disc player device characterized in that the disc player is configured to prevent the occurrence of