JPH0719422B2 - Multi-disc player - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player, and more particularly to a multi-disc player capable of accommodating a plurality of discs and sequentially selecting any of the discs contained therein for continuous performance.

BACKGROUND ART A jukebox is generally known as a disc player capable of accommodating a plurality of discs and sequentially selecting any of the discs contained therein to enable continuous performance. However, the conventional jukebox itself is so large that it is not suitable for home use.

In recent years, it has been called a digital audio disc (hereinafter abbreviated as DAD), and by recording a digital signal, it is possible to increase the amount of information to be stored and to reproduce it as compared with a conventional analog audio disc that has a signal. Several types of discs have been developed and are widely used, which generate less noise. Among them, especially the method of recording and reading a signal by using a laser beam, a disc generally called a compact disc having an outer diameter of about 12 cm is easy to handle and enables downsizing of the entire disc player. is there. Recently, multiple small DADs (for example, 4 to 6)
A multi-disc player has been developed that can be stored at any time and is optimal as a home jukebox that plays these continuously. By the way, the performance time for a small DAD is 1
It can hold about 1.5 times as much information as conventional analog audio discs. Therefore, for example, 6
About 120 songs can be accommodated in a single disc if the playing time is about 3 minutes, and it is easy to cover each genre such as jazz or enka.

A multi-disc player basically has a playing means including a turntable and a pickup means, a disc holder that holds a disc so that it can be projected and stored, and is inserted and mounted in a mounting portion in a player housing, and a disc holder inside the disc holder. A disc take-out / transport mechanism for transporting the disc to the playing position, that is, the turntable is provided.

In the multi-disc player, when the disc in the disc holder is transported onto the turntable, the disc is moved in two directions, a direction parallel to the disc-carrying surface of the turntable and a direction substantially perpendicular thereto. . Therefore, the disc ejecting / transporting mechanism is configured to move the disc in a direction parallel to the disc-carrying surface of the turntable so as to project it to the outside of the disc holder, and the disc projecting to the turntable. And a second disk moving means that moves in a direction substantially perpendicular to the disk carrying surface.

In the already developed multi-disc player, as the disc holder, a disc holder made by assembling several kinds of individually molded members made of resin or the like was used. For example, it is composed of a housing which is a main body of the disc holder, and a plurality of carrying plates which are provided separately from the housing and carry the respective discs. However, since a plurality of types of members are used in this way, a large number of molding apparatuses for molding the respective members are required, and a process for assembling the respective members is also required, resulting in high cost. Was becoming. In addition, the amount of materials used is large, which also contributes to the cost increase.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a multi-disc player including a disc holder whose cost is low.

A multi-disc player according to the present invention holds a disc in a projecting and retractable manner and inserts and mounts the disc into a mounting portion in a player housing, and moves the disc in a direction parallel to a disc-carrying surface of a turntable. A first disc moving means for projecting to the outside of the disc holder, and the disc holder is formed with a holding portion for slidingly contacting the outer peripheral portion of the disc to guide and hold the disc to the storage position. Is provided with an engaging portion that detachably engages with the outer periphery of the disc and restricts the detachment from the storage position. Inside the player housing, the disc is taken out before the disc is taken out and conveyed by the first disc moving means. It is characterized in that an engaging portion detaching means for detaching the engaging portion from the outer circumference of the disk is provided.

Embodiments Hereinafter, essential parts of a multi-disc player as an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, arrow X indicates the left side of the multi-disc player, and arrow Y indicates the front side. The arrow Z shown in FIG. 2 indicates the upper side. As shown in the figure, a magazine 3 as a disc holder is removably inserted and mounted in a mounting portion inside the player housing 2. The magazine 3 is formed in a flat rectangular parallelepiped shape as a whole, and has an open rear surface. The magazine 3 holds, for example, four disks 5. Each disc 5
Are arranged and housed in order at a predetermined pitch in a direction substantially perpendicular to a disk carrying surface of a turntable, which will be described later, in this case, in the vertical direction (the arrow Z direction and the opposite direction).

As is particularly clear from FIGS. 3 to 5, the magazine 3 is formed with holding portions 3a to 3g for slidingly contacting the outer peripheral portion of the disk 5 to guide and hold the disk to its storage position. The magazine 3 is integrally molded of resin including the respective holding portions. The holding portion 3g provided in the center of the right end portion of the magazine 3 among the above-mentioned engaging portions serves as an engaging portion that detachably engages with the outer periphery of the disc 5 and restricts the detachment of the disc from its storage position. Has become. Further, the holding portion 3g is flexible and, as described above, is integrally formed with the main body of the magazine 3 and engages with the outer periphery of the disc 5 by its elasticity to prevent the disc 5 from being detached from the storage position. is doing. Normally, the member for restricting the removal of the disc is provided separately from the magazine 3.
The magazine 3 is extremely easily formed by being integrally formed with the main body.

A moving member 7 made of a steel plate is arranged in the player housing 2 and is movable in the vertical direction, that is, the arrangement direction of the disks 5. A turntable 8 is provided on the moving member 7. On the moving member 7 and behind the turntable 8, a carriage 10 carrying an optical pickup means is arranged, and is reciprocally movable along a plane including the disk carrying surface 8a of the turntable 8. It is attached to the member 7. Carriage driving means (not shown) for driving the carriage 10 is also provided on the moving member 7.

The turntable 8, the carriage 10 including the optical pickup means, and the carriage driving means constitute a playing means for playing a disk. That is, the playing means is provided on the moving member 7 and moves together with the moving member in a direction perpendicular to the disk carrying surface 8a of the turntable 8, that is, in the vertical direction (the arrow Z direction and the opposite direction). Although not shown, moving member moving means for moving the moving member 7 in the vertical direction is provided.

A pair of guide shafts 12 and 13 extending in the front-rear direction are provided at both left and right ends of the upper surface of the moving member 7. A slider 14 is slidably attached to both of the guide shafts, and a holding plate 15 for holding the main surface of the disk 5 is attached on the slider. On the moving member 7 and on the right side of the guide shaft 13, there are a pair of pulleys.
17,18 are provided. A belt 19 is wound around the both pulleys, and a part of the belt is connected to the right end portion of the slider 14. A worm wheel 18a is integrally formed with the pulley 18 arranged at the rear side, and the worm 20a fitted to the output shaft of the motor 20 meshes with the worm wheel.

By the guide shafts 12 and 13, the slider 14, the pulleys 17 and 18, the belt 19, the motor 20, and the peripheral small members related thereto, the holding plate 15 is arranged so as to project the disc 5 from the magazine 3. The held disk 5
A holding plate driving means that is driven together with the holding plate driving means is configured. Further, the holding plate driving means and the holding plate 15
And the peripheral members associated therewith constitute a first disk moving means for moving the disk 5 in a direction parallel to the disk carrying surface 8a (second shown) of the turntable 8 and projecting it out of the magazine 3. There is.

A pair of disc guide members 22 and 23 are provided on the moving member 7 so as to slide on the left and right sides of the disc 5 protruding from the magazine 3 and guide the disc. Also,
As shown in FIG. 1, on the upper surface of the right front end of the moving member 7, a slide plate 25 is reciprocally movable within a predetermined range in the front-rear direction (the arrow Y direction and the opposite direction) via a pin 25a. It is provided. On the other hand, a protrusion 3i is formed on the holding portion 3g of the magazine 3, and the slide plate 25
The front end of the protrusion 3i can engage with the rear edge of the protrusion 3i. A solenoid plunger 26 for applying a driving force to the slide plate 25 is arranged on the upper surface of the right front end of the moving member 7 and to the right of the slide plate 25. The slide plate 25 and the solenoid plunger 26 constitute an engaging portion detaching means for detaching the holding portion 3g as an engaging portion that engages with the outer periphery of the disc 5 from the outer periphery of the disc.

As shown in FIG. 2, a plate-shaped support body 29 extending in the front-rear direction (the arrow Y direction and the opposite direction) is arranged below the turntable 8 and in the vertical direction (the arrow Z direction). And in the opposite direction), the movable member 7 is movably attached. As shown in Figure 1,
A disk-shaped pressing member 30 is rotatably attached to the support body 29 so as to come into contact with the surface of the disc 5 opposite to the turntable 8 and cooperate with the turntable to perform a disc clamping action. Also, although not shown, the support 29
Supporting means driving means is provided for driving up and down together with the pressing member 30.

The support body 29, the pressing member 30, and the support body drive means (described above) constitute a clamp mechanism that clamps the disk 5. In addition, this clamp mechanism
It is also used as a second disk moving means for moving the disk 5 projected out of the magazine 3 by the above-mentioned first disk moving means in a direction (upward) substantially perpendicular to the disk carrying surface 8a of the turntable 8. . Further, the second disc moving means and the first disc moving means constitute a disc take-out / conveying mechanism for conveying the disc 5 in the magazine 3 to the playing position, that is, the turntable 8.

Next, the operation of the multi-disc player having the above-mentioned configuration will be briefly described according to the playing procedure.

First, when the disc to be played is designated by pressing the operation button, the moving member 7 is moved upward or downward. Therefore, the holding plate 15 provided on the moving member 7 reaches a position where the disc to be played can be held. After that, the motor 20 rotates to drive the holding plate 15 forward (direction of arrow Y), and the desired disk 5 is taught by the holding plate. At the same time, the first
As is apparent from the figure, the solenoid plunger 26 operates and the output shaft thereof is retracted, whereby the slide plate 25 moves forward (the direction of the arrow Y), and the holding portion 3g engaged with the disc is moved to the slide plate 25. It is pushed by and is deformed from the state shown by the solid line in the figure to the state shown by the chain double-dashed line, and is released from the outer periphery of the disc. As a result, when the disc can be projected out of the magazine 3, the motor 20 is reversed and the disc is moved backward together with the holding plate 15. Disk 5 is turntable 8
When it reaches the position just below, the support 29 is driven upward (direction of arrow Z), whereby the holding plate 15 bends upward by a predetermined amount, and the disc is clamped to the turntable 8.

Then, the sandwiching plate 15 is further driven rearward to separate from the disc 5, and reaches the position shown by the chain double-dashed line in FIG.

Thus, the performance becomes possible, and the turntable 8 and the carriage 10 operate to start the performance. When the performance is finished, the disc 5 is stored in the magazine 3. However, the disc storing operation is performed by following the reverse process of the disc loading operation described above, and the detailed description thereof will be omitted. Thereafter, the above operation is repeated according to the designated number of songs.

As described above in detail, in the multi-disc player according to the present invention, the disc holder (magazine 3) which holds the disc (5) so that it can be housed in a protruding manner and is inserted and mounted in the mounting portion in the player housing, The disc holder (magazine 3) has a first disc moving means for moving the disc in a direction parallel to the disc carrying surface (8a) of the turntable (8) and projecting the disc to the outside of the disc holder. A holding portion (3a to 3g) that slides on the outer periphery to guide and hold the disc to its storage position.
And an engaging portion (3g) for detachably engaging the outer periphery of the disc to restrict the detachment from the storage position, the holding portion being provided in the player housing. Engagement part detaching means (slide plate 25 and solenoid plunger 2) for detaching the engaging part from the outer periphery of the disc before the disc is taken out and conveyed by the disc moving means.
6) is provided.

With such a configuration, the disc holder (magazine 3) including the holding portion can be integrally formed of resin or the like as a whole. Therefore, the number of molding devices for molding the disc holder is small,
In addition, the number of man-hours to be assembled by the completion of the disc holder is also reduced, so that the cost can be easily reduced.

Further, since the engaging / disengaging means is provided, the engaging portion (3g) is disengaged from the disc before the disc is taken out by the disc take-out / conveying mechanism, so that the resistance by the engaging portion is added to the disc. Instead, the disc can be smoothly taken in and out of the disc holder (3), and the friction between the disc and the engaging portion can be prevented.

[Brief description of drawings]

1 and 2 are a plan view and a side view of an essential part of a multi-disc player according to the present invention, and FIGS. 3 and 4 are a plan view and a front view including a partial cross section of a magazine serving as a disc holder. , FIG. 5 is a partial detailed view of the magazine. Explanation of symbols of main parts 2 …… Player housing 3 …… Magazine 5 …… Disk 7 …… Movement member 8 …… Turntable 10 …… Carriage 15 …… Clamping plate

Claims (2)

[Claims] 1. A player housing, a playing means including a turntable and a pick-up means, provided in the player housing, and a disk for holding the disk so that it can be housed in a projecting manner and for being inserted and mounted in a mounting portion in the player housing. The disk holder includes a holder and a disk ejecting / conveying mechanism for conveying the disk in the disk holder to a playing position. The disk ejecting / conveying mechanism moves the disk in a direction parallel to the disk carrying surface of the turntable to move the disk holder. A multi-disc player having a first disc moving means for projecting outward and a second disc moving means for moving the disc protruding outside the disc holder in a direction substantially perpendicular to the disc carrying surface, The disc holder is slidably in contact with the outer periphery of the disc and A holding portion that guides and holds the disc to the storage position is formed, and the holding portion is provided with an engagement portion that detachably engages with the outer periphery of the disc and restricts the disc from leaving the storage position. A multi-disc player, characterized in that inside the player housing, there is provided an engaging portion detaching means for detaching the engaging portion from the outer circumference of the disc before the first disc moving means takes out and conveys the disc. 2. The multi-disc player according to claim 1, wherein the engaging portion is flexible and is integrally formed with the disc holder.