JP2568933B2 - Disc playback device - Google Patents

Description

Description: TECHNICAL FIELD The present invention generally relates to a disk reproducing apparatus,
The present invention relates to a disc reproducing apparatus for reproducing signals recorded on a plurality of stored discs.

2. Description of the Related Art Video disk players, compact disk players, compact disk ROMs, and the like are known as laser disk players that read video signals or audio signals recorded using a laser. Most of the laser disc players are of a type in which a disc selected by a user is inserted and then played, and when trying to play another disc, the player is temporarily stopped and the disc is replaced. There is a disadvantage that the player must be operated again later.

On the other hand, an automatic continuous-play automatic energy storage called a jukebox has been put into practical use. In this automatic energy storage, a large number of ordinary synthetic resin disks (ie, records) are stored in the main body, and when the user selects an arbitrary disk from outside, the device automatically moves the disk to the play position. It is a method of moving and playing.

[Problems to be Solved by the Invention] However, in the above-mentioned jukebox, since a large number of disks are displayed and stored on a plurality of shelves on the second floor or more, removal and storage for selection of disks are performed. The movement of the mechanical operating part necessary for redisplay and the like is complicated. That is, the operating part must move in the X and Y directions in the display part of the disc,
Also, a stop position must be specified for each coordinate. Furthermore, access takes time because the distance to move the disc to the play location (playback location) is long. That is, in the conventional jukebox, there is a problem that a complicated mechanical structure is required for taking out and storing the disk, and it takes time to access.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and one object of the present invention is to simplify a structure for taking out and reproducing a specified disc in a disc reproducing apparatus. Another object of the present invention is to reduce the time required for taking out a specified disc in a disc reproducing apparatus.

[Means for Solving the Problems] A disk playback device according to the present invention includes a disk storage unit, a disk ejection mechanism, a rotation drive unit, and a playback unit. The disk storage section stores and stores a plurality of disks in a donut shape and is rotatable. The disc ejection mechanism is provided adjacent to a part of the disc storage unit, and takes out a disc stored in the disc storage unit. The rotation drive unit drives the disk storage unit in response to a disk specification signal given from the outside so that the disk specified by the disk specification signal moves to the take-out position of the disk take-out mechanism. The disc ejecting mechanism ejects the specified disc when the designated disc moves to the ejection position of the disc ejecting mechanism. The reproducing unit is provided adjacent to the disc ejecting mechanism and reproduces a signal recorded on the disc ejected by the disc ejecting mechanism.

In the disk playback device configured as described above,
The disc ejection mechanism includes a chassis, a loading lever, a pair of guide channels, and an unloading lever. The chassis, from the inner circumference side of the disk storage section,
It is arranged so as to extend toward the reproducing section positioned on the outer peripheral side of the disk storage section. The loading lever is attached to the inner peripheral end of the chassis located on the inner peripheral side of the disk storage, and takes out the disk from the disk storage. The pair of guide channels are arranged so as to face each other with an interval therebetween, and guide the ejected disc to the reproducing unit. The unloading lever is attached to the outer peripheral end of the chassis located on the outer peripheral side of the disc storage unit,
The disc is retreated from the reproducing section to the disc storage section through the pair of guide channels.

The reproducing unit includes a clamper and a laser pickup movably arranged between a position separated by a first distance from each other and a position separated by a second distance longer than the first distance.

When the clamper and the laser pickup are moved to a position separated by a first distance from each other, the pair of guide channels can be moved so as to reduce the distance on the disc storage unit side in conjunction with the clamper and the laser pickup. Are located. One end of each of the loading lever and the unloading lever is connected to each other by a tension spring, and is arranged so as to be synchronized with each other in the same direction.

[Operation] In the disk reproducing apparatus of the present invention, a plurality of disks are arranged and stored in a donut shape in the disk storage section. The rotation drive unit rotationally drives the disk storage unit so that the disk specified from the outside moves to the extraction position of the disk extraction mechanism. The disc ejecting mechanism ejects the specified disc when the designated disc moves to the ejection position of the disc ejecting mechanism. The removed disk is reproduced by the reproducing unit. As described above, a desired disk can be taken out by rotating and driving the disk storage portion, so that its mechanical structure can be simplified. Also, with the simplification of the mechanical structure,
The time required to eject a disc is reduced.

Further, in the disk reproducing apparatus of the present invention, the specified disk moves in a predetermined direction from the disk storage portion and is taken out by the loading lever. After the reproduction is completed, the disc is moved from the reproduction section to the disc storage section in a predetermined direction by the unloading lever and stored. In this manner, the removal and storage of the disk are performed only by moving one-dimensionally. for that reason,
It is possible to provide a disk ejecting mechanism that is advantageous for reducing the size and size of the disk reproducing device.

FIG. 1 is a perspective view of a disk reproducing apparatus according to an embodiment of the present invention. Referring to FIG. 1, a rotating frame A is disposed at a central portion of a main body H, and two disc playing portions B and a disc exchanging portion C are disposed at an outer peripheral portion thereof. The disc play section B and the exchange section C are arranged from the inner peripheral side to the outer peripheral side. The main body H is provided with an outlet (not shown) for exchanging a disc at a position corresponding to the outer peripheral direction from the inner exchanging section C.

The rotating frame A includes a rotating plate 2 that rotates about a center hub 1, a display table 3 integrally attached to an upper surface of the rotating plate 2, and radiation grooves 5 cut on the upper and lower sides of the display table 3. Become. On the outer periphery of the rotating plate 2, a position determining opening 6 for determining an address of the radiation groove 5 and a gear 7 are provided.
A drive mechanism 8 that meshes with the gear 7 to rotationally drive the rotary plate 2 is disposed on the outer peripheral side of the rotary frame A.

As shown in FIG. 2, a bending spring 9 is arranged on the outer peripheral side below the radiation groove 5 so that the disk D can be stably housed, so that the disk D does not suddenly jump out of the display stand 3. I have to.

With such a configuration, the disk D inserted into the radiation groove 5 of the display stand 3 is sent to the display unit B by the driving mechanism 8 driving the rotary plate 2. In this process, the selection of the disc D is based on the designation by an electric signal from the user, and the designation signal is set to one of the addresses assigned to the respective radiation grooves 5. Is performed through the operation of designating.

The drive mechanism 8 rotates the rotating plate while counting the position determining openings 6 until the disk D corresponding to the designated address is sent to the disk playing section B. Accordingly, although not shown, the drive mechanism 8 includes an electronic circuit that senses and counts the position determining opening 6 and a motor controlled by the electronic circuit.

FIG. 2 is a structural diagram showing a linking structure of the disc play unit B and the exchange unit C shown in FIG. Referring to FIG. 2, a disc playing section B is arranged around the rotating frame A, and an exchange section C is arranged on the inner periphery of the rotating frame A. A disc play portion B disposed on the outer periphery of the rotating frame A includes a chassis 11 having an extension portion 10 extending toward the inner periphery side of the display stand 3, and a loading lever 12 symmetrically arranged and synchronized with the extension portion 10.
And an unloading lever 13.

FIG. 3a is a structural diagram showing the structure of the disc play section B. Referring to FIG. 3a, the loading lever 12 and the unloading lever 13 are rotatably held on the shafts 14 and 15 in the chassis 11, respectively. The levers 12 and 13 are linked to each other by their upper ends being connected to a tension spring 16. The levers 12 and 13 are synchronized with each other by an operation lever 17 disposed on the rear side of the chassis 11. The operating lever 17 has a rack gear 18 at a lower end driven by a motor (not shown). When the motor drives the operating lever 17 in the direction of the arrow "a" in the drawing, an interlocking pin 19a attached to the upper end of the loading lever 12 is pushed by the tip of the operating lever 17, and the loading lever 12 is drawn with the shaft 14 as a base point. The disk D stored in the display stand 3 is pushed into the inside of the chassis 11. In this case, the unloading lever 13 also turns synchronously in the direction of arrow "B" through the tension spring 16 connected to the upper end thereof, so that the disk D guided inside the chassis 11 does not interfere.

Conversely, when the operating lever 17 is advanced in the direction opposite to the arrow "A" in the drawing, the unloading lever 13
Arrow 19b is pushed with the axis 15 as the base point.
The loading lever 12 also turns in the direction opposite to the arrow “B” by the tension spring 16. The movement of the operation lever 17 is controlled by a limit switch or a precision control based on the number of rotations of the motor.
It is desirable that 13 be able to synchronize accurately.

A pair of guide channels 20 and 22 for receiving the guided disk D is vertically arranged at a position corresponding to the radiation groove 5 of the display stand 3 inside the chassis 11. The guide channels 20 and 21 are not fixedly provided but are swingably held by fixed shafts 22 and 23, respectively. On the other hand, a link which receives the pulling force of the spring 24 between the diagonal ends of the guide channels 20 and 21
25 is provided to change the attitude of both guide channels 20 and 21 in conjunction with the movement of a slider described later.

A clamper 26 is arranged inside the chassis 11 so that the disc D guided along the guide channels 20 and 21 is accurately set on a laser pickup to be described later, and a slider 27 is provided below the clamper 26. Is provided. Further, a laser pickup 28 is arranged on the opposite side of the clamper 26 with the chassis 11 as a boundary.

4a and 4b are enlarged structural views of a part of the disc play section B shown in FIG. 3a as viewed from above. Clamper
The ends of 26 and the laser pickup 28 are connected to each other like a nipper so as to be close to or remote from each other by an axis 29 as shown in FIG. 4b or FIG. It is provided diagonally. Therefore, the clamper 26 and the laser pickup 28
When they overlap each other around the chassis 11, the disc D is sandwiched in the middle, and the laser pickup 28 plays the disc D in this state. The movement of the clamper 26 starts with the slider 27, and the movement of the laser pickup 28 starts with the other slider 30.
The sliders 27 and 30 are provided so as to be operable at the same time with respect to the chassis 11, and can be slid along the surface of the chassis 11 by the same motor (not shown) as the driving system of the operating lever 17. .

Next, the interlocking relationship between the clamper 26, the laser pickup 28, and the sliders 27, 30 will be described. Slider 2
7 and 30 have predetermined cam grooves 31 and 32, respectively, the cam roll 33 of the clamper 26 moves along the cam groove 31 of the slider 27, and the cam groove 32 of the slider 30 The cam roll 34 moves. Slider 27
And 30, the movement of the clamper 26 and the laser pickup 28 are located close to or remote from each other. In particular, the slider 30 has, in addition to the cam groove 32, a side cam groove 35 on the lower right side as shown in FIG. 3a.

The cam roll 36 provided at the lower end of the link 25 is inserted into the side cam groove 35, and when the slider 30 starts operating, the link 25 is located at the end 35a of the side cam groove 35, and the link 25 is slightly moved. We will take it down. As a result, the upper and lower guide channels 20 and 21 respectively
The disc is rotated in the direction connected to the link 25 with the base points 22 and 23 as a base, and the diameter of the outlet side is reduced until the disc D is held by the clamper 26, so that the disc D does not reverse.

The above operation will be further described. A spring 24 is connected to the center of the link 25. This spring
The tensile force of 24 always acts in a fixed direction. The cam roll 36 is always in contact with one side surface of the cam groove 35 of the slider 30. Therefore, as shown in FIG. 3b, when the slider 30 moves in the direction of arrow I, the cam roll 36 moves to the terminal end 35a of the cam groove 35 along the shape of the cam groove 35, and the link 25 moves downward. Will move.

As a result, the upper and lower guide channels 20 and 21 are
The connecting shaft 20a of the guide channels 20 and 21 connected to the link 25, respectively, starting from the respective shafts 22 and 23.
And 21a, while turning in the directions of arrows II and II '. Until the disc D is held by the clamper 26, the gaps on the outlet side of the upper and lower guide channels 20 and 21 are narrowed to each other, but the gap on the opposite side is the disc D.
Are spread in a rotatable state, creating free space.

FIG. 5 is a structural diagram of the exchange unit C shown in FIG.
With reference to FIG. 5, a replacement part C is formed by a chassis 40 extended and formed on the outer peripheral side of the display stand 3 fixedly held at the center of the hub 1.
And an exchange lever 42 pivotally supported by the chassis 40 and operating in a manner similar to the loading lever 12 or the unloading lever 13 described above. Exchange lever 42
In the same manner as in the disc play section B, an interlocking lever (not shown) is provided on the back side of the chassis 40 by a motor (not shown) to reciprocate. By swinging, the exchange lever 42 reciprocates in the direction of arrow "c" in the drawing with the fixed shaft 43 as a starting point. Therefore, the disk D stored in the display stand 3 is pushed out.

The disk playback device configured as described above operates as follows. It is assumed that a large number of disks D are previously stored in the display table 3 of the rotating frame A through an outlet provided in the main body H.

First, when the user selects any one of the disks D stored in the display stand 3 of the rotating frame A using a keyboard or the like, the selected disk D
The drive mechanism 8 rotates the rotating plate 2 until is sent to the disc play section B. At that time, the drive mechanism 8 counts the position determining openings 6 formed on the outer periphery of the rotating plate 2, and the selected disk D is accurately positioned at the position of the disk playing section B.

The completion of the driving of the driving mechanism 8 means that the selected disk D is positioned at the disk playing section B, and in response to the signal, the operating lever 17 shown in FIG. The loading lever 12 is swiveled interlockingly while sliding. Thereby, the disc D selected from the display 3 is guided along the bending spring 9 between the guide channels 20 and 21. In this process, when the loading lever 12 is actuated, the unloading lever 13 is pivoted together by the tension spring 16 and is guided to the guide channels 20 and 21 to move to the right as shown in FIG. 3a. It does not hinder the path of the disc D to be inserted.

When the disk D is guided to the guide channels 20 and 21 by the loading lever 12, the sliders 27 and 30 slide along the surface of the chassis 11. Here, as a means for detecting that the disk D has been guided to the guide channels 20 and 21, a sensor or a limit switch is preferably arranged at a predetermined position on the chassis 11.

When the sliders 27 and 30 slide, as shown in FIG. 4a, the clamper 26 and the laser pickup 28, which are positioned obliquely in a direction symmetric with respect to the chassis 1, move into the cam grooves 31 and 32 of the sliders 27 and 30. As the respective cam rolls 33 and 34 move along, they come close to each other as shown in FIG. 4b, and as a result, the disc D is sandwiched between the clamper 26 and the laser pickup 28. In this process, when the slider 30 starts to operate, as shown in FIG. 3b, the link 25 also moves downward along the cam groove 35 on the side face thereof, and the disk D
Before the disk D is sandwiched between the clamper 26 and the laser pickup 28, the guide channels 20 and 21 reduce the diameter on the exit side, so that the disk D does not reverse. When the above operation is completed, the disc D is reproduced and played by the laser pickup 28.

When the play ends, the sliders 27 and 30 return to their original positions, and the link 25, the clamper 26, and the laser pickup 28 also return to their original positions. At the end of this process, the operating lever 17 also returns to its original position, and the unloading lever 13 pushes the disc D into the radiation groove 5 of the display 3 at the corresponding address. Subsequently, when another disc D is selected, the above-described process is repeated, and it is possible to play continuously.

In such an automatic player, when replacing the disk D stored in the rotating frame A, the user specifies the address of the disk D to be replaced. The rotating frame A rotates to guide the disk D of the corresponding address to the exchange unit C, and then the exchange lever of the exchange unit C shown in FIG.
42 turns and displays the disk D to be replaced on the display stand 3.
Extrude outside. As already explained, the extruded disc D will exit the main body H immediately because the exchange part C is coincident with the outlet of the main body H.

As a disk to be stored in the disk reproducing apparatus shown in FIG. 1, for example, a compact disk (CD) or a video disk can be applied. Moreover,
It is pointed out that by storing a disk on which other types of signals are recorded, the disk reproducing apparatus can be used for various purposes.

It should be noted that the technology required to control the disk reproducing apparatus shown in FIG. 1 can be realized by those skilled in the art by using electronic microcomputer technology.

[Effects of the Invention] As described above, according to the present invention, a rotation drive unit for rotating a disk storage unit in which a plurality of disks are arranged and stored in a donut shape is provided, and a stored desired disk is taken out. With this configuration, the structure required for taking out and reproducing the disc is simplified, and the time required for taking out the disc is shortened. Further, since the ejection and storage of the disc are performed only by one-dimensional movement of the disc, it is possible to provide a disc ejection mechanism that is advantageous for reducing the size and weight of the disc reproducing apparatus.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disk reproducing apparatus showing one embodiment of the present invention. FIG. 2 is a structural diagram showing a linking structure of the disc play unit and the exchange unit shown in FIG. No.
FIGS. 3a and 3b are structural views showing the structure of the disc play unit shown in FIG. 2 according to the movement of the slider. FIGS. 4a and 4b are views of a part of the disc play unit shown in FIG. 3a as viewed from above, and are enlarged structural views as the slider moves. FIG. 5 is a structural view of the exchange unit shown in FIG. In the figure, A is a rotating frame, B is a disc playing section, C is an exchange section, D is a disc, and H is a main body.

Claims (3)

(57) [Claims] 1. A disk reproducing apparatus for reproducing signals recorded on a plurality of disks, comprising: a rotatable disk storage unit for arranging and storing the plurality of disks in a donut shape; A disk ejecting mechanism provided adjacent to the unit for ejecting a disk accommodated in the disk accommodating unit; and a disk designated by the disk designation signal in response to an externally designated disk designation signal. A rotation drive unit that rotationally drives the disk storage unit so as to move to a take-out position of the mechanism, wherein the disc take-out mechanism is configured such that when the designated disc is moved to the take-out position of the disc take-out mechanism, Ejecting a specified disc, further provided adjacent to the disc ejection mechanism, and provided by the disc ejection mechanism. A reproducing unit for reproducing a signal recorded on the output disk, wherein the disk ejecting mechanism is positioned from an inner peripheral side of the disk storing unit to an outer peripheral side of the disk storing unit. A chassis disposed so as to extend toward the playback unit, and an inner peripheral side end of the chassis located on an inner peripheral side of the disk storage unit, and removing the disk from the disk storage unit A loading lever, a pair of guide channels arranged so as to face each other at an interval, and guiding the ejected disc to the reproducing unit; and an outer peripheral end of the chassis located on an outer peripheral side of the disk storage unit. An unloading lever attached to the storage unit and configured to eject the disk from the playback unit to the disk storage unit through the pair of guide channels. And a clamper movably disposed between a position separated by a first distance from each other and a position separated by a second distance longer than the first distance from each other. When the clamper and the laser pickup move to a position separated from each other by the first distance, the pair of guide channels are interlocked with the clamper and the laser pickup, and One end of each of the loading lever and the unloading lever is connected by a tension spring so that the loading lever and the unloading lever are linked to each other in the same direction in synchronization with each other. A disc reproducing apparatus for reproducing signals recorded on a plurality of discs, wherein 2. The signal recorded on the plurality of disks includes an audible signal, and the reproducing unit reproduces the audible signal recorded on the disk extracted by the disk extracting mechanism. The disk reproducing apparatus according to claim 1. 3. The disk according to claim 1, wherein the plurality of disks are disposed on a plurality of radiation grooves formed in the disk storage portion, and on the outer peripheral side below the radiation grooves, the disks spring outward from the radiation grooves. 2. The disk reproducing apparatus according to claim 1, further comprising a bending spring having a tensile force for preventing the spring from popping out.