JPH03296963A - Rotary disk autochanger device - Google Patents

Abstract

PURPOSE:To protect a pickup by covering the upper part of the pickup with a covering member when the upper part of the pickup is not covered with a clamping mechanism. CONSTITUTION:The disk autochanger device is provided with a turntable 11 and the covering member 23 supported on the upper part of a reproducing mechanism 10 having a pickup 12 so as to be displaced interlocking with the clamping mechanism 14. The member 23 is displaced so as to recede from the upper part of the pickup 12 at the time of moving the mechanism 14 to a clamping position, or be displaced so as to cover the upper part of the pickup 12 at the time of moving the mechanism 14 to a non-clamping position.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention rotates a rotary tray that is rotatably supported by a cabinet, thereby playing back a plurality of discs placed on the rotary tray. Regarding a rotary type disc autochanger device that automatically replaces discs, it is particularly a rotary type that allows discs to be loaded and unloaded on the disc loading section by opening a lid that is provided on the cabinet so that it can be opened and closed to cover the upper part of the rotary tray. This invention relates to a disc autochanger device.

(b) Conventional technology A disc autochanger device is known in which a plurality of discs are set and the disc to be played is automatically changed.Currently, such a disc autochanger device uses a CD-type optical disc (CD). Those for use are becoming popular. As such a disc autochanger device, for example, as shown in Japanese Unexamined Patent Application Publication No. 62-239375, there is a disc that allows a tray to rotate around a rotating shaft and on which a disc is placed around the rotating shaft. A plurality of disc mounting sections are provided radially on the tray, and by rotating the tray, a desired disc mounting section is moved to a playback position facing a playback mechanism provided with a turntable, an optical pickup, etc., and the disc is mounted. A rotary type device is known that plays back a disc placed on a holder. With such a rotary disc autochanger device, the operation of changing the disc to be played is as simple as rotating the tray as described above, so it is stored with multiple discs loaded and the inside of the disc is changed. Compared to the type in which a desired disc is taken out and played, it is advantageous in shortening the time required to change the disc, and also 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 can be loaded and unloaded with the tray extended from the cabinet. If you do this, you will need a mechanism to slide the tray, which will increase costs.
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.

(c) Problems to be Solved by the Invention By the way, the above-mentioned top-opening rotary disc autochanger device can simultaneously load and unload a plurality of discs without rotating the tray.
When playing a disc, the clamp mechanism used to press and hold the disc on the turntable covers the top of the disc mount in the playback position, so it is difficult to attach or remove the disc on the covered disc mount. In this case, the tray must be rotated so that the clamping mechanism is not located above the disk mounting section, which makes the work of attaching and detaching the disk cumbersome.

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.

However, when the clamp mechanism is rotated, the hole formed in the disc mounting part of the tray at a position facing the turntable and optical pickup for playing the disc is exposed, so foreign objects can be inserted through the hole. There is a drawback that there is an increased risk of damaging the reproducing mechanism if the player touches the components of the reproducing mechanism, particularly the optical pickup or the mechanism for sending the optical pickup.

(D) Means for Solving the Problems The present invention is a rotary type disc autochanger device which has been made in view of the above points, and which has a chuck member for pressing a disc onto a turntable and a chuck member for moving the disc to a playback position. a clamp supported so as to be movable between a clamp position in which a disc placed on a mounting portion is crimped and held on the turntable and a non-clamped position in which the disc is removed from the position where the mounting portion is formed; and a cover member that is displaceably supported above the playback mechanism having the turntable and the pickup, and that is displaced in conjunction with the clamp mechanism, when the clamp mechanism is moved to the clamp position. At the same time, when the clamp mechanism is moved to a non-clamping position, the cover member can be displaced to cover the top of the pickup.

(*) Function The present invention has a structure in which a clamp mechanism is rotatably supported in a cabinet, and when a disc is placed on a tray, the clamp mechanism can be avoided from the position where the disc placement part of the tray is formed. At the same time, in order to play the disc, it is possible to insert and remove discs from all the disc mounting parts formed on the tray without rotating the tray. A cover member covers the top of the optical pickup so that at least the optical pickup is not exposed through a hole formed at a position facing the table and the optical pickup.

(f) Embodiment FIG. 1 is a plan view showing an example of a rotary disc autochanger 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 rotatably attached to the cabinet (1) with the center shutter (2) as a rotation center axis, and a concave CD mounting portion (5) on which a CD (4) is placed is mounted on the cabinet (1). Five rotary trays are arranged radially around a center shaft (2), (6) is a rim formed concentrically with the rotary tray (base) on the lower surface of the rotary tray (7); A pulley (8) is fixed to the rotating shaft (7a), and a rubber belt (9) is stretched between the pulley (8) and the rim (6).
A motor drives the rotating tray via a CD turntable (11) for rotating the CD (4), and a light for reading out signals recorded on the CD (4). a pick-up (12), and the optical pick-up (1
2) a feeding mechanism (13) for feeding CDs (13) in the radial direction of the CD (4); ) is a clamping mechanism for holding the CD placed on the CD mounting portion (5), which has been moved to the playback position opposite to the CD turntable (11), by pressure 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) is formed in each case to trace D (4).

Further, the regeneration mechanism (10) is supported so as to be movable up and down about the shaft (16) as a rotation center axis, 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). As shown in FIG. 2, which is a partial cross-sectional view from the axial direction of the screen (16), the playback mechanism is in a lowered state except when the CD is being played.

On the other hand, the clamp mechanism (14) is rotatably supported by the cabinet (1) in the horizontal direction by the rotation shaft (17), as shown in FIG.
The clamp mechanism (14) is provided with a clamp plate (19) supported rotatably in the vertical direction about a shaft (18). The clamp plate (19) includes:
A chuck member (20) for crimping and holding the CD (4) on the CD turntable (11) is rotatably loosely fitted, and the clamp plate (19) is attached to the clamp plate (19).
9) The hemispherical protrusion (21) formed on the lower surface is supported by placing it on the guide protrusion (22) formed on a part of the cabinet (1) around the rotation axis (17). has been done. The guide protrusion (22) has a low portion that contacts the protrusion (21) when the clamp mechanism (14) is displaced to the clamp position shown by the solid line in FIG. The portion of the protrusion (21) that comes into contact with the protrusion (21) gradually becomes higher as the protrusion (14) is moved to the non-clamped position shown by the dashed line in FIG.

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 rotating tray (3), and the rotational displacement of the clamping mechanism (14) is not inhibited. .

Further, although the details will be described later, a cover member (23) is provided to cover the hole (15) of the CD mounting portion (5) that is displaced to the playback position in conjunction with the rotation of the clamp mechanism (14). The cover member (23) is configured to be displaced.
When the clamp mechanism (14) moves to the clamp position, it is displaced so as to be removed from the hole (15), and when the clamp mechanism (14) moves to the non-clamp position, it covers the hole (15). is displaced.

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 record disc on which analog signals are mechanically recorded (
26), and serves as a support section for supporting the CD mounting section (26).
5), and all or part of the support part is made of viscoelastic resin or other material to hold the record (26) and absorb the vibrations of the record (26). The rubber mat (not shown) is completely stuck.

The center shaft (2) is formed to protrude from the upper surface of the rotating tray (base), and its diameter corresponds to the center hole of the record disc (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 cartridge (30) with a needle hole provided at the tip of the tone arm (29).

The rotary tray (3), clamp mechanism (14), and pickup mechanism (31) are mounted on a hinge (3) on the back side of the cabinet <1>, as shown in the model view from the side in Fig. 4.
2) so that it can be covered by a lid (33) that is attached to the lid so that it can be opened and closed. It is designed so that you can see it.

Next, a method of using the CD autochanger device configured as described above will be explained. Of course, when setting a CD or record, be sure to close 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 (3) of the rotating tray (3).
5). In this case, the clamping mechanism (14) is rotated to the non-clamping position as shown by the dashed line in FIG. 5) Make sure that the CD can be placed on the
After placing the CD (4) on the desired CD placing portion (5), the clamp mechanism (b) is rotated to the clamping position shown by the solid line in FIG. Here, the clamp mechanism (1
As shown in FIG. 2, the chuck member (20) (4) is arranged so that its lower surface is higher than the upper surface of the CD (4) placed on the CD mounting portion (5). Furthermore, since the reproducing mechanism (10) is lowered as shown in FIG. 2, the rotary tray (3) cannot be rotated even when the clamp mechanism (14) is displaced to the clamp position. I can do it. Therefore, when selecting a CD to play, rotate the rotary tray (3) with the clamp mechanism (14) displaced to the clamp position, and place the CD on the desired CD mounting section (5).
Playback mechanism (10)
Move it to the playback position opposite to. In this case, when 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 (3) via the belt (9). Therefore, the rotating tray (
3) can be rotated, and a 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 playback mechanism (10) is rotated in the direction of arrow A in FIG. It is raised by moving. Here, the clamp mechanism (1
4) is in the clamp position, and the cover member (23) has been displaced to a position out of the hole (15) of the CD mounting portion (5) in the playback position. Therefore, the playback mechanism (10) is raised, and as it continues to rise, the protrusion at the center of the CD turntable (11) will eventually be inserted into the center hole (4a) of the CD (4), The CD (4) is placed on the CD 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 separated from the CD mounting part (5) and is held by the chuck member (20>) on the CD turntable (11).Therefore, the spindle motor ( 34) When electricity is applied and the CD turntable (11) is rotated, the CD (4) is rotated, so the optical pickup (12) causes the CD turntable (11) to rotate.
D(4) can be reproduced.

Therefore, after the playback mechanism (10) is lowered and the rotating tray (3) is rotated to allow the CD (4) placed on the CD placement section (5) to be moved 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 playing a record, the clamp mechanism (1
4) Rotate to the non-clamp position and remove from the position where the record is placed. Then, insert the center hole of the record (26) into the center shaft (2) and insert the record (26) into the center shaft (2).
26) is placed on the rotating tray (base). Here, since the regeneration mechanism (10) is configured to descend before rotating the clamp mechanism (14) to the non-clamping position,
With the clamp mechanism (14) rotated to the non-clamp position, the rotating tray (3) can be rotated.

Therefore, rotate the rotary tray (3) and record the record (
26〉, the tone arm (29) is also rotated, and the cartridge (30) is used to record the record (26).
), the pickup mechanism (!) can be traced.
The record disc (26) can be played back.

In addition, in this case, by rotating the clamp mechanism (14) to the non-clamping position, the cover member (23)
Since it is displaced to a position that covers the hole (15) of the CD placement part (5) in the playback position, foreign objects cannot be inserted through the hole (↑5) or the playback mechanism (10) may be touched. Nothing like that.

In addition, the rotating tray (
The rotation of the rotary tray (base) is performed by a motor (7) which serves as a driving source for rotating the rotary tray (base) when selecting a CD to be played.

Further, the CD mounting portion (5) of the rotating tray (3) is formed one step lower than the support portion on which the record disc (26) is placed, and the step of the CD mounting portion (5) is Therefore, while the CD is placed on the CD mounting/receiving section <5), the record disc (26
) can be placed.

By the way, the present invention is characterized in that the cover member (23) is displaced in accordance with the rotation of the clamp mechanism (14), and this point will be explained in detail next.

5 and 6 show plan views of the drive mechanism that drives the clamp mechanism (14) and the cover member (23), with the clamp mechanism (14) being displaced to the clamp position and the non-clamp position, respectively. In figure 0 showing (35
) is the motor serving as the driving source, and (36) is the motor (35)
A first pulley (37) fitted on the rotating shaft (35a) of
) is a second pulley connected to the first pulley (36) via a transmission belt (38), (39) is a first gear coaxially formed with the second pulley (37), and (40) is a second pulley connected to the first pulley (36) via a transmission belt (38); A second gear (41) is meshed with the first gear (39), and a third gear (41) is formed coaxially with the second gear (40).
is formed with a gear portion (42a) that is engaged with the third gear (41), and has a spiral cam (43) on the top surface.
), the cam member (44) is rotatably supported around a shaft (45), and a guide bin (46) guided by the cam (43) and a gear part ( 47) and a first rotating member (49) formed with a drive bin (48), the first rotating member (49) is rotatably supported around a shaft (50), and the clamping mechanism (14) is connected to the shaft (5o). and the first rotating member (44)
A second rotating member (52) has a hole (51) into which the drive bottle (48) can be inserted; (52) is a fourth gear with which the gear portion (47) of the first rotating member (44) is engaged; ) is the axis (5
a gear portion (55) which is pivotally supported for rotational displacement about 4) and in which the fourth gear (52) meshes;
and a hole (56). and,
The cover member (23) is rotatably supported around a shaft (57) provided concentrically on the center shaft (2), and the cover member (23) is supported so as to be rotatable about a shaft (57) provided concentrically on the center shaft (2). The hole (56) of the third rotating member (53) is provided so as to cover the hole (15) of the portion (5).
It has a pin (58) inserted into.

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

Therefore, when the rotating shaft (35a) of the motor (35) is rotated clockwise, the cam member (婬) rotates clockwise, while the rotating shaft (35a) of the motor (35)
When the cam member is rotated counterclockwise, the cam member is rotated counterclockwise.

By the way, when the cam member (42) rotates, the 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, the second rotating member (49) is rotated. Therefore, the clamp mechanism (b) is rotated. In this case, the first rotating member (44) is rotated in a direction opposite to the rotating direction of the cam member (43) due to the spiral shape of the cam (43). The second rotating member (49) is
The first rotating member (44) is rotated in a direction opposite to the rotation direction of the first rotating member (44). Therefore, the clamp mechanism (14) is rotated clockwise when the cam member (14) is rotated clockwise, and is rotated counterclockwise when the cam member (14) is rotated counterclockwise. be moved.

On the other hand, when the first rotating member (44) rotates, the gear portion (44) rotates.
7), the fourth gear (52) is rotated. and,
When the fourth gear (52) rotates, the third rotating member (53) is rotated via the gear portion (55). Therefore, the cover member (23) is rotated when the pin (58) is completely displaced. In this case, the fourth gear (52) is
rotated in a direction opposite to the rotational force direction of the first rotation member (44),
The third rotation member (53) is rotated in a direction opposite to the rotation direction of the fourth gear (52). Then, the cover member (23
) is rotated in a direction opposite to the rotation direction of the third rotation member (53). Therefore, when the cam member (42) rotates clockwise, the cover member (23) rotates clockwise, and when the cam member (42) rotates counterclockwise, the cover member (23) rotates clockwise.
Rotated counterclockwise.

By the way, when the second rotating member (49) is completely displaced to the first position shown in FIG.
It has been displaced to the clamp position shown by the solid line in the figure. At this time, the cover member (23) is displaced from the hole (15) of the CD mounting portion (5) in the playback position, as shown in FIG.

Now, in the above-mentioned state, the motor (35) is energized so that the rotating shaft (35a) rotates clockwise.
The cam member (42) rotates clockwise. Therefore, the second
The rotating member (49) is rotated clockwise.

Here, the second rotating member (49) is connected to the second rotating member (49) shown in FIG.
When displaced to the position, the clamping mechanism (14)
It has been displaced to the non-clamped position as indicated by the dashed line in FIG. Therefore, when the second rotating member (49) is rotated clockwise, the clamping mechanism (14) is eventually displaced to the non-clamping position.

On the other hand, when the cam member (42) rotates clockwise, the cover member (23) rotates clockwise. Therefore, the cover member (23) is eventually displaced to cover the hole (15) of the CD mounting section (5) at the playback position, as shown in FIG.

Conversely, in the state shown in FIG. 6, if the motor (35) is energized so that the rotating shaft (35a) rotates counterclockwise, the cam member (婬) rotates counterclockwise and the rotational axis (35a) rotates counterclockwise. 2
The rotating member (49) can be rotated counterclockwise. For that reason,
The clamp mechanism (B) is rotated counterclockwise, and the clamp mechanism (B) is eventually displaced to the clamp position.

On the other hand, when the cam member rotates counterclockwise, the cover member (23) rotates counterclockwise.

Therefore, as shown in FIG.
Displaced to a state outside of.

Therefore, in order to be able to play the record,
When the clamping mechanism (L!) is displaced to the non-clamping position, the cover member (23) is moved to the CD mounting section (5) at the playback position.
), and on the other hand, when the clamp mechanism (b) is moved to the clamp position to play a CD, the cover member (23) covers the hole (15). It will be out of place.

(g) Effects of the Invention As described above, the present invention provides a structure in which the top of the pickup is covered by the cover member when the clamp mechanism is in the non-clamp position and the top of the pickup is not covered by the clamp mechanism. This has the advantage that the pickup can be protected, and the cover member is displaced from above the pickup in conjunction with the displacement of the clamp mechanism to the clamp position during disk playback. This has the advantage that no special operation for displacing the cover member is required.

[Brief explanation of drawings]

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 from 0-0゛ in Fig. 1, Fig. 4 is a model diagram showing how the lid is attached, and Figs. 5 and 6 show the main mechanism of the present invention, each with a clamp mechanism. It is a top view which shows the state displaced to a clamp position and a non-clamp position. Explanation of main drawing numbers (3)...Rotating tray, (5)...CD mounting section,
10)...Reproduction mechanism, (12)...Optical pickup, (14)...Clamp mechanism, (23)...
...Cover member.

Claims (1)

[Claims] (1) The tray is provided with a plurality of radially placing portions on which disks are placed around the rotation axis of the tray rotatably supported by the cabinet, and the plurality of placing portions are provided by rotating the tray. A rotary type disc auto changer device that moves a predetermined mounting part to the playback position and selects the disc to be played, which includes a turntable to rotate the disc and a pickup to read out the signals recorded on the disc. a reproducing mechanism, a hole formed in a position of the tray mounting portion facing the turntable and the pickup for reproducing the disc, and a chuck member for compressing the disc onto the turntable; It is movable between a clamp position in which a disc placed on the mounting section moved to the playback position is held under pressure on the turntable, and an unclamped position in which the disc is removed from the position where the mounting section is formed. and a cover member that is movably supported above the reproduction mechanism and is displaced in conjunction with the clamp mechanism, when the clamp mechanism is moved to the clamp position. A rotary disc autochanger characterized in that the cover member is displaced so as to be removed from above the pickup, and the cover member is also displaced so as to cover the top of the pickup when the clamp mechanism is moved to a non-clamping position. Device.