JPH05182335A - Multi-disk player - Google Patents

Abstract

PURPOSE:To enable a replacement or take-out for another disk while keeping a disk playing as it is, even if the number of motors and their driving systems is two, by elevating and lowering the disk playing part in the section where a connecting tooth is engaged with a planet gear mechanism. CONSTITUTION:A tray base 1 freely movable in the direction of the arrow A-B is moved together with a rotary tray 3 capable of placing plural disks 9 thereon. This movement is performed in such a manner that a U-shaped tooth part provided with two lines of racks 1c, 1d and the connecting tooth 1e concentric to a rotational radius of the planet gear 19 is engaged with the gear 19. At the same time, the disk playing part 20 playing the disk 9 is also elevated/lowered in the direction of the arrow G-H in the section where the connecting tooth 1e is engaged with the gear 19. By this procedure, the replacement or take-out for other disk 9 is performed while keeping the disk playing as it is, even if the number of motors and their driving systems is two.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-disc player in which a plurality of discs are mounted and the discs can be continuously played, or discs and songs can be arbitrarily selected and played. It is about.

[0002]

2. Description of the Related Art In recent years, various types of multi-disc players have been put on the market with the spread of discs, but various systems have been adopted in order to realize higher performance, higher performance and lower cost. As one of the methods, there is a method in which a plurality of discs are placed on a rotary tray on a tray base that moves in the front-rear direction and the discs to be played are selected by rotating the rotary tray.

An example of the above-mentioned conventional multi-disc player will be described below with reference to the drawings.

FIG. 10 is a perspective view showing an entire conventional multi-disc player, and FIG. 11 is an exploded perspective view thereof. 10 and 11, the tray base 50 is housed in the hole 51a of the panel chassis 51, and the tray base 50 is attached to the ribs 51b provided on the left and right of the panel chassis 51.
The guide portion 50a is fitted and is movable in the direction of arrow b. Reference numeral 52 is a rotary tray, which is attached to a shaft 50b of the tray base 50 so as to be rotatable in the arrow C or the two directions, and has five disk mounting portions 52a.
A notch 52b is provided at the center of the. The motor 53 attached to the tray base 50 is provided with a toothed portion 5 of the rotary tray 52 via a reduction mechanism including a motor pulley 54, a belt 55, a pulley gear 56, and a drive gear 57.
The rotary tray 52 is rotated in the arrow C or D direction by driving the tooth portion 57a of the drive gear 57 on 2c. Reference numeral 58 is a disk.

A motor 59 mounted on the panel chassis 51 is provided with a rack 50c provided on the lower surface of the tray base 50 and a drive gear 63 via a reduction mechanism including a motor pulley 60, a belt 61, a pulley gear 62 and a drive gear 63. The tooth base 63a is driven to move the tray base 50 in the arrow or fork direction. Reference numeral 64 is a disc playing portion, 64a is a turntable which carries the disc 58 placed on the rotary tray 52, shaft portion 64b is a supporting portion 51c of the panel chassis 51, and disc playing portion 64 is an arrow or a head. It is attached so that it can rotate in any direction. Also, the pin 64
c is coupled to the cam portion 65a of the elevating gear 65, and the rotation of the elevating gear 65 causes the disk playing portion 64 to rotate in the direction of the sway or the f direction. The motor 66 rotates the elevating gear 65 via a reduction mechanism including a motor pulley 67, a belt 68, and a pulley gear 69.

Reference numeral 70 is a cutout 5 in the rotary tray 52.
The clamp plate 7 is a clamper that carries the disc 59 between the turntable 64a and the turntable 64a of the disc playing portion 64 that passes through 2b.
It is rotatably attached to the first hole 71a. In addition,
The ribs 50d provided on the tray base 50 are for preventing the disc 58 placed on the rotary tray 52 from falling, and 50e is an opening for the disc playing portion 64. The dimension 1 is larger than the outer diameter of the disk 58 in order to pass the disk 58 which is being played.

The operation of the multi-disc player constructed as above will be described below. First, in order to place the disk 58 on the rotary tray 52, when a command is issued to output the tray base 50 and the rotary tray 52 to the outside of the panel chassis 51, the motor 59 rotates and the motor pulley 60, the belt 61, the pulley gear 62,
Since the tooth portion 63a of the drive gear 63 drives the rack 50c of the tray base 50 in the arrow A direction via the speed reduction mechanism including the drive gear 63, the tray base 50 moves in the A direction and the disk loading of the rotary tray 52 is performed. The placement portion 52a stops at the place outside the panel chassis 51. Then, the disk 58 is mounted on the disk mounting portion 52a of the rotary tray 52. (In this embodiment, two discs can be placed at the same time.) When the next disc 58 is placed on the remaining disc placement portion 52a of the rotary tray 52, the motor 53 is rotated by a command, and the motor pulley 54 and the belt 55 are placed. Since the tooth portion 57a of the drive gear 57 drives the tooth portion 52c of the rotary tray 52 in the arrow C direction via the speed reduction mechanism including the pulley gear 56 and the drive gear 57, the rotary tray 52 rotates in the arrow C direction. And
The disc mounting portion 5 on which the disc 58 is not mounted yet
Since 2a stops at the place where it comes out of the panel chassis 51, the next disk 58 can be placed. By repeating this, the disks 58 can be mounted on the disk mounting portions 52a of all the rotary trays 52.

Next, when a command is issued to play the disk 58, the motor 59 first rotates in the opposite direction to the above, so that the tray base 50 also moves in the arrow B direction opposite to the above direction and the panel chassis 51. Stop inside the house. Then, since the motor 53 rotates to move the disk 58 to be played to the playing position, the rotary tray 52 also rotates in the arrow C or D direction, and the specified disk 58 comes under the clamper 70 at the playing position. Stop where you stand. Next, the motor 66 rotates and the motor pulley 6
Since the elevating gear 65 is rotated through the speed reducing mechanism including the belt 7, the belt 68, and the pulley gear 69, the pin 64c of the disc playing portion 64 which is linked by the cam portion 65a of the elevating gear 65 moves to move the disc playing portion 64. Rotates in the direction of arrow E and carries the disc 58 between the turntable 64a and the clamper 70 to start playing.

When the performance ends, the next disk 5
In order to play 8, the motor 66 first rotates in the opposite direction to rotate the disc playing portion 64 in the direction of the arrow, and then the rotation of the motor 53 causes the rotary tray 52 to rotate in the direction of arrow C or D. The next disk 58 is moved to the playing position, and the disk playing portion 64 is rotated in the arrow E direction in the same manner as described above to play the disk 58. By repeating this, all the disks 5 placed on the rotary tray 52
You can play 8.

Next, when the disk 58 is finished playing and the disk 58 is replaced or taken out, when a command is issued, the motor 66 first rotates to rotate the disk playing portion 64 in the direction of the arrow, and then the motor 59. Tray base 50 by rotating
Moves in the direction of arrow a, and the disk 58 placed on the rotary tray 52 appears outside the panel chassis 51. Therefore, the Irisu 擘 瓩 Gun 茲 螢 璲 烅 碅 海 纅 繅 繇 胲 辰 蹄 轇 罇 纲 woven耓 璽 肇 譽 い 毅 Europeanwei 鹽 胅 酽 鹽 胓 情 斀 惀 Favor ■ Good ■ 毅 餓 鮎 鸓 麓 蟲 蟲 蟒 芒 蚒 约 5 Another disc 58 while playing the disc 58 To replace or remove the
The rotation of 9 causes the tray base 50 to move in the direction of arrow A, so that the rotary tray 5 is provided outside the panel chassis 51.
Since the disk 58 placed on No. 2 is ejected, the disk 58 other than the one being played can be replaced or taken out while the rotary tray 52 is rotated by the rotation of the motor 53 by a command.

[0011]

However, in the conventional multi-disc player as described above, the disc 58 is used.
In order to allow another disk 58 to be exchanged or removed while the music is being played, the motors 53, 59, 66
Also, there is a problem that the number of drive systems is required to be three, and the number of parts is large and the cost is high.

In view of the above-mentioned conventional problems, the present invention is capable of exchanging or taking out another disc while the disc is being played even if the number of motors and its drive systems is two. The purpose of the present invention is to provide an inexpensive multi-disc player which has a small number of components.

[0013]

In order to solve the above-mentioned problems, a multi-disc player according to the present invention is configured so that the tray base is moved in the front-rear direction by rotating a plurality of rows of racks on the tray base and planetary gears connecting the racks. The planetary gear mechanism is engaged with a substantially U-shaped or O-shaped tooth portion having a connecting tooth that is concentric with the radius of movement, and the disc playing portion is moved up and down in the section where the connecting tooth and the planetary gear mechanism are engaged. Is to do.

[0014]

According to the present invention, as described above, the movement of the tray base in the front-rear direction is substantially the same as the rack having a plurality of rows of racks on the tray base and the connecting teeth concentric with the turning radius of the planetary gears connecting the racks. The planetary gear mechanism is engaged with the U-shaped or O-shaped tooth portion, and the disc playing portion is moved up and down in the section where the connecting teeth and the planetary gear mechanism are engaged with each other. Even with two discs, another disc can be exchanged or taken out while the disc is still playing.

[0015]

Embodiments of the multi-disc player of the present invention will be described in detail below with reference to FIGS.

FIG. 1 is a perspective view showing an entire multi-disc player according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a detailed plan view of a drive mechanism portion therein, and FIG.
5 is an operation explanatory view of the drive mechanism section, FIG. 5 is a timing chart of FIG. 4, and FIG. 6 is an operation explanatory view of the disk guard. FIG. 7 shows a multi-disc play in the second embodiment.
8 is a perspective view showing the whole of the yarn maker, an eighth is a perspective view of the disc guard portion, and FIG. 9 is an assembled sectional view of the disc guard.

1 to 9, the tray base 1 is housed in the hole 2a of the panel chassis 2, and the guide portions 1a of the tray base 1 are fitted to the ribs 2b provided on the left and right of the panel chassis 2. The arrow fork is movable in the direction of B. 3 is a rotary tray, a tray base 1
The shaft 1b is rotatably attached in the direction of arrow C or in the two directions, and notches 3b are provided at the centers of the five disk mounting portions 3a. The motor 4 attached to the tray base 1 is such that the tooth portion 3a of the rotary tray 3 is driven by the tooth portion 8a of the drive gear 8 via a reduction mechanism including a motor pulley 5, a belt 6, a pulley gear 7, and a drive gear 8. According to this, the rotary tray 3 is rotated in the arrow C or D direction. Reference numeral 9 is a disk.

The motor 10 mounted on the panel chassis 2 includes a motor pulley 11, a belt 12, and a pulley gear 1.
3, the sun gear 15 through the toothed portion 14a of the up-and-down gear 14 meshed with each other via the speed reducing mechanism including the up-and-down gear 14.
Is designed to rotate. As shown in detail in FIG. 3, the sun gear 15 has teeth of a planetary gear 19 rotatably attached to a shaft 18 on a planetary arm 17 which is rotatable about an axis 16 in the directions of arrows and F. It meshes with the portion 19a. The tooth portion 19b of the planetary gear 19 meshes with the two rows of racks 1c and 1d provided on the lower portion of the tray base 1 and the connecting tooth 1e concentric with the turning radius of the planetary gear 19 by the planetary arm 17 connecting them. Therefore, the tray base 1 is moved in the arrow or fork direction by the rotation of the planetary gear 19. Further, the rib 1f provided on the tray base 1 is in mesh with the shaft 18 on the planetary arm 17, and the tooth portion 19b of the planetary gear 19 is provided on the tray base 1 in two rows of racks 1c, 1d and the racks 1c, 1d. It follows the connecting tooth 1e that connects the.

Reference numeral 20 is a disc playing portion, 20a is a turntable carrying the disc 9 placed on the rotary tray 3, shaft portion 20b is a supporting portion 2c of the panel chassis 2, and disc playing portion 20 is an arrow. It is also attached so that it can be rotated in the direction C. Also, the pin 20c
Is connected to the cam portion 14b of the lifting gear 14, and the rotation of the lifting gear 14 causes the disk playing portion 20 to rotate in the direction of arrow F or in the direction of arrow F. Reference numeral 21 denotes the disc playing portion 2 which passes through the notch 3b of the rotary tray 3.
It is a clamper that carries the disk 9 between the No. 0 turntable 20a and is rotatably attached to the hole 22a of the clamp plate 22 attached to the panel chassis 2. The rib 1g provided on the tray base 1 is for preventing the disc 9 placed on the rotary tray 3 from falling off.

Reference numeral 23 denotes a claw portion 23 in the hole 1h of the tray base 1.
The disk guard is rotatably attached in the arrow direction or the n direction by a, and is normally urged in the C direction by the spring 24. However, when the tray base 1 moves in the arrow A direction, The pin 23b comes into contact with the rib 2d of the panel chassis 2 so that the disc guard 23 can be rotated in the G direction. Further, the rib 23c at one end is for preventing the disc 9 placed on the rotary tray 3 from falling off, and has the same height as the rib 1g of the tray base 1. 1i of the tray base 1 is a disc playing section 20
It is an opening for. The dimension l is larger than the outer diameter of the disc 9 in order to pass the disc 9 being played.

The operation of the multi-disc player constructed as above will be described below. First, since the disc 9 is placed on the rotary tray 3, as shown in FIG.
And from the state (2) of the drive mechanism of FIG. 5, the tray base 1
When a command is issued to output the rotary tray 3 to the outside of the panel chassis 2, the motor 10 rotates in the arrow direction, and the motor pulley 11, the belt 12, the pulley gear 13,
Since the sun gear 15 is rotated by the tooth portion 14a of the ascending / descending gear 14 that meshes with each other and rotates in the arrow direction via the speed reducing mechanism including the ascending / descending gear 14, the planet gear 19 rotates in the arrow direction and the planet arm 17 moves. Furthermore, it tries to rotate in the direction of arrow E. Then, since the tooth portion 19b of the planetary gear 19 drives the rack 1c of the tray base 1 in the direction a, the tray base 1 moves in the direction of the arrow a, and the disk mounting portion 3a of the rotary tray 3 moves to the panel chassis 2. It stops when it goes out, that is, in the state (1) of the drive mechanism in FIGS. 4 (B) and 5.

Then, the disk 9 is placed on the rotary tray 3
It is mounted on the disk mounting portion 3a. (2 in this embodiment
Can be placed at the same time. ) When the next disk 9 is mounted on the remaining disk mounting portion 3a of the rotary tray 3, the motor 4 is rotated by a command, and a reduction mechanism including a motor pulley 5, a belt 6, a pulley gear 7, and a drive gear 8 is installed. Since the tooth portion 8a of the drive gear 8 drives the tooth portion 3c of the rotary tray 3 in the arrow C direction, the rotary tray 3 rotates in the arrow C direction. And still disc 9
The disk mounting portion 3a, which has not been mounted, stops at the place outside the panel chassis 2, so that the next disk 9 can be mounted. By repeating this, the disks 9 can be mounted on the disk mounting portions 3a of all the rotary trays 3.

Next, when a command is issued to play the disk 9, the motor 10 first rotates in the direction of the arrow opposite to the above, so that the elevating gear 14 and the planetary gear 19 also rotate in the direction of the arrow to move the tray. Move the base 1 in the direction of arrow B,
Where the tray base 1 is stored in the panel chassis 2,
That is, the drive mechanism is stopped in the state (2) of the drive mechanism shown in FIGS. Then, since the motor 4 rotates to move the disk 9 to be played to the playing position, the rotary tray 3 also rotates in the arrow C or D direction, and the designated disk 9 comes under the clamper 21 at the playing position. Stop where you stand.

Next, since the motor 10 further rotates in the two directions to further rotate the elevating gear 14 in the direction of the arrow, the pin 20c of the disc playing portion 20 linked by the cam portion 14b of the elevating gear 14 moves. , Disk playing section 20
Rotates in the direction of arrow T and carries the disc 9 between the turntable 20a and the clamper 21 to start playing. At this time, since the sun gear 15 is rotated by the tooth portion 14a of the ascending / descending gear 14 which meshes with each other and rotates in the arrow direction, the planet gear 19 also rotates in the arrow direction along the connecting teeth 1e of the tray base 1 and the planet arm. Reference numeral 17 is rotated in the direction of the arrow to reach the driving mechanism state (3) in FIGS. 4C and 5 and is stopped. Since the connecting tooth 1e of the tray base 1 is concentric with the turning radius of the planetary gear 19 by the planetary arm 17, the planetary arm 17 and the planetary gear 19 are connected.
Even if is rotated, the tray base 1 does not move in the arrow or fork direction.

When the performance ends, the next disc 9
First, the motor 10 rotates in the arrow direction to rotate the elevating gear 14 in the arrow direction, and the disc playing portion 20 rotates in the arrow direction. At this time, since the sun gear 15 is rotated by the tooth portion 14a of the elevating gear 14 which meshes and rotates in the arrow direction as described above, the planet gear 19 also rotates in the arrow direction along the connecting tooth 1e of the tray base 1. At the same time, the planetary arm 17 rotates in the direction of arrow E, and enters the state (2) of the drive mechanism shown in FIGS. 4 (A) and 5 and is stopped. Then, the rotation of the motor 4 causes the rotary tray 3 to rotate in the direction of arrow C or D to move the next disk 9 to the playing position. 20 is rotated in the direction of arrow T, that is, the driving mechanism is in the state (3) shown in FIGS. 4C and 5, and the disc 9 is played. By repeating this, all the disks 9 placed on the rotary tray 3 can be played.

Then, the performance of the disk 9 is completed and the disk 9 is finished.
When exchanging or taking out the
Rotates in the arrow direction to rotate the disc playing portion 20 in the arrow direction, that is, after the state (2) of the driving mechanism in FIGS. 4A and 5, the motor 10 is further moved in the arrow direction. By rotating, the tray base 1 is moved in the arrow A direction in the same manner as described above to be in the state (1) of the drive mechanism of FIGS. 4B and 5, and is placed on the rotary tray 3 outside the panel chassis 2. Since the disc 9 comes out, the disc 9 can be replaced or taken out while the rotary tray 3 is rotated by the rotation of the motor 4 according to a command.

Also, with the disk 9 still playing,
That is, when another disk 9 is exchanged or taken out in the state (3) of the drive mechanism of FIGS. 4C and 5, when a command is issued, the motor 10 rotates in the direction of the arrow and meshes in the direction of the arrow. The sun gear 1 is rotated by the teeth 14a of the rotating lifting gear 14.
Since 5 rotates, the planet gear 19 rotates in the direction of the arrow and the planet arm 17 further tries to rotate in the direction of the arrow. Then, since the tooth portion 19b of the planetary gear 19 drives the rack 1d of the tray base 1 in the arrow A direction,
The tray base 1 moves in the direction of arrow A, and stops when the disk mounting portion 3a of the rotary tray 3 comes out of the panel chassis 2, that is, at the state (4) of the driving mechanism shown in FIGS. 4D and 5. To do. Then, after the command, the motor 4
With the rotation of, the disk 9 other than the one being played can be replaced or taken out while rotating the rotary tray 3. Then, after exchanging or removing the disk 9, when a command to store the tray base 1 in the panel chassis 2 is issued, the motor 10 rotates in the arrow R direction opposite to the above, and the tray base 1 moves in the arrow B direction. The drive mechanism is moved to the state (3) of the drive mechanism shown in FIGS. 4C and 5 and stopped.

Since the shaft 18 on the planetary arm 17 is constantly guided by the ribs 1f of the tray base 1, the tooth portions 19b of the planetary gear 19 have two rows of racks 1c and 1d of the tray base 1. And always follows the connecting teeth 1e connecting them.

Further, in the state of FIG. 6A, that is, in the state where the tray base 1 is housed in the panel chassis 2,
The disc guard 23 is biased by the spring 24 in the direction n so as not to interfere with the disc playing portion 20, but the pin 23b of the disc guard 23 is moved to the panel as the tray base 1 moves in the direction of arrow a. Since it abuts on the ribs 2d of the chassis 2, the disc guard 23 rotates in the direction of the arrow, and the state shown in FIG.
When the disk is completely outside the panel chassis 2, the opening 1i of the tray base 1 is closed to prevent the disk 9 from falling. In FIG. 6B, the dimension a is smaller than the outer diameter of the disk 9 (even when the diameter is small).

Next, a second embodiment of the disk guard is shown in FIG.
The description will be made using 9 to 9. The difference from the above-mentioned embodiment is that the hole 1h of the tray base 1 is in the arc-shaped guide groove 1j, the rib 2d of the panel chassis 2 is in the cam portions 2e and 2f of the U-shaped groove portion, and the disk is The shape of the guard 25 has changed, and the spring 24 has been abolished. As for assembly, as shown in FIG. 8, two claw portions 25a of the disc guard 25 are formed in the guide groove 1j of the tray base 1 (the other claw shape is omitted in FIG. 8, but they are the same). ) Is inserted. At this time, as shown in FIG. 9 (A), the claw portion 25a once falls inward, and thereafter, as shown in FIG. 9 (B), the claw portion 25a returns to the original state, so that the claw portion 25a is removed from the guide groove 1j. Disappear. When the tray base 1 and the panel chassis 2 are assembled, the pin 25b of the disk guard 25 is engaged with the cam portion 2e or 2f of the U-shaped groove. At this time, the width of the U-shaped groove of the cam portions 2e and 2f is slightly larger than the diameter of the pin 25. Also,
The width of the guide groove 1j is such that the claw portion 25a of the disc guard 25 can slide after being assembled.

The operation will be described below. When the tray base 1 is stored in the panel chassis 2, the pin 25b
Is in the straight portion of the cam portion 2e. That is, the disc guard 25 is located in front of the guide groove 1j of the tray base 1. Next, when the tray base 1 is pushed out in the direction of arrow B from the direction of arrow B, the pin 25 of the disk guard 25
b is engaged with the cam portion 2f of the panel chassis 2 and the cam portion 2f moves with the pin 25b as the tray base 1 moves.
By pressing, the disc guard rotates along the arc-shaped guide groove 1j from the direction indicated by the arrow to the re-direction, and the tray base 1 comes out just as in the state of FIG. 6B in the above example. In this state, the disc guard 25 closes the opening 1i of the tray base 1 to prevent the disc 9 from passing (falling in). When the tray base 1 is subsequently stored, the pin 25b of the disk guard 25 is rotated in a cam shape so that the disk guard 25 escapes from the opening 1i of the tray base 1. This role is exactly the same as that of the above-mentioned embodiment, but since the spring 24 is abolished, the assembling property is very good, and the cost of the spring 24 is not required, so that a significant cost reduction can be realized.

As described above, according to this embodiment, the movement of the tray base movable in the arrow arrow direction together with the rotary tray 3 on which a plurality of discs 9 can be placed is moved in two rows on the tray base 1. Racks 1c, 1d and the planet gears 19 are engaged with the substantially U-shaped tooth portion having the connecting teeth 1e that are concentric with the turning radius of the planet gears 19 that connect the racks 1c, 1d, and the connecting teeth 1e and the planets. Even if the number of motors and their drive systems is two, the disc playing portion 20 that plays the disc 9 in the section where the gear 19 meshes is moved up and down in the direction of the arrow torch. It becomes possible to replace or remove the disk 9 of.

Further, the disc playing portion 20 of the tray base 1
In the vicinity of the opening 1i in which the disc 9 is connected, the tray base 1 rotates in the arrow line direction as the arrow base moves in the arrow direction, and the disc 9 passes through the opening 1i of the tray base 1 when necessary. Disc guard 23 or 2 to prevent (fall)
By providing 5, the disc 9 is prevented from falling into the product and being unable to be taken out even when the product is moved or tilted while the disc 9 is mounted on the disc mounting portion 3a of the rotary tray 3. can do.

[0034]

As described above, according to the present invention, the movement of the tray base in the front-back direction is substantially the same as the rack having a plurality of rows of racks on the tray base and the connecting teeth concentric with the turning radius of the planetary gears that connect the racks. The planetary gear mechanism is engaged with the U-shaped or O-shaped tooth portion, and the disc playing portion is moved up and down in the section where the connecting teeth and the planetary gear mechanism are engaged with each other. Even with two discs, another disc can be exchanged or taken out while the disc is still playing.

The tray base moves or pivots in the vicinity of the opening to which the disk playing portion is connected in accordance with the movement of the tray base in the front-rear direction, and when necessary, the disk passes (drops) from the opening of the tray base. ) To prevent the disc from falling into the product and preventing it from being taken out even when the product is moved or tilted with the disc placed on the disc tray of the rotary tray. Can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire multi-disc player according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a multi-disc player according to an embodiment of the present invention.

FIG. 3 is a detailed plan view of a drive mechanism portion of a multi-disc player according to an embodiment of the present invention.

FIG. 4 is an operation explanatory diagram of a drive mechanism section of a multi-disc player according to an embodiment of the present invention.

FIG. 5 is a timing chart for explaining the operation of the drive mechanism section of the multi-disc player in one embodiment of the present invention.

FIG. 6 is an operation explanatory diagram of the disc guard of the multi-disc player according to the embodiment of the present invention.

FIG. 7 is an exploded perspective view of a multi-disc player according to a second embodiment of the present invention.

FIG. 8 is an exploded perspective view of a disc guard portion according to a second embodiment of the present invention.

FIG. 9 is an assembled sectional view of a disk guard portion in the second embodiment of the present invention.

FIG. 10 is a perspective view showing an entire conventional multi-disc player.

FIG. 11 is an exploded perspective view of a conventional multi-disc player.

[Explanation of symbols]

 1 Tray base 2 Panel chassis 3 Rotary tray 4 Motor 5 Motor pulley 6 Belt 7 Pulley gear 8 Drive gear 9 Disc 10 Motor 11 Motor pulley 12 Belt 13 Pulley gear 14 Lifting gear 15 Sun gear 16 Shaft 17 Planetary arm 18 Shaft 19 Planetary gear 20 Disc playing part 21 Clamper 22 Clamp plate 23, 25 Disc guard 24 Spring

Claims (3)

[Claims] 1. A rotary tray on which a plurality of discs can be placed and which is rotatable together with the discs, and a rotary tray drive means for rotating the rotary tray,
A tray base that supports the rotary tray and the rotary tray drive means and is movable in the front-rear direction; a tray base moving means that moves the tray base in the front-rear direction; And a disc playing unit elevating means for vertically moving the disc playing unit, the movement of the tray base in the front-back direction is connected to a plurality of rows of racks on the tray base. The planetary gear mechanism is engaged with a substantially U-shaped or O-shaped toothed portion having connecting teeth concentric with the turning radius of the planetary gear.
A multi-disc player, wherein the disc playing portion is moved up and down in a section where the connecting teeth and the planetary gear mechanism mesh with each other. 2. The tray base is moved or pivoted in the vicinity of an opening where the disk playing portion is associated with the tray base along with the front-back movement of the tray base, and when necessary, from the opening of the tray base. Passage of the disc (fall)
The multi-disc player according to claim 1, further comprising a disc guard for preventing the above-mentioned problem. 3. The disc guard is provided on a guide fixing claw provided on the disc guard, a guide pin provided on the disc guard, and a rear portion of the tray base,
An arc-shaped guide groove into which the guide fixing claw is slidably fitted, and a chassis are provided, and engage with the guide pin to interlock with the movement of the tray base in the front-rear direction. When moving forward, the disc guard is rotated along the arc-shaped guide groove to the opening of the tray base, and when the tray base is moved backward, the disc guard is moved along the arc-shaped guide groove. 3. The multi-disc player according to claim 2, further comprising a cam portion that rotates in a direction away from the opening of the base.