JPH09265706A - Recording and reproducing device for information recording disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost of parts and to miniaturize a device by simplifying the constitution. SOLUTION: An arm 51 has a laser pickup 55 and a turntable 53 and is constituted to be turnable. A magazine 2 for housing CDs is fitted around a supporting axis 52 of the arm 51. The magazine 2 is capable of housing a plurality of CDs to be layered, and the CD can selectively moved in its layering direction. In recording or reproducing the CD, a reproducing space part is formed by moving the CD in the layering direction. The laser pickup 55 and the turntable 53 enters the reproducing space part underneath the CD by turning the arm 51, and the CD is chucked with the turntable 53. Since the arm 51 is freely turnable, any magazine 2 can be connected to the turntable 53. Then, the CD is rotated, and the laser pickup 55 is moved on the arm 51 to read and reproduce a signal recorded on the CD.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for an information recording disc. Specifically, a plurality of magazines that movably support a disc holder on which a plurality of information recording discs are mounted are provided, and recording or reproduction is performed by a shared head unit attached to a rotatable arm for the discs stored in this magazine. The present invention relates to a recording / reproducing apparatus for an information recording disk, which can reduce the size of the apparatus and reduce the number of parts by performing the above.

[0002]

2. Description of the Related Art Conventionally, as a recording / reproducing apparatus for an information recording disc, which accommodates a plurality of information recording discs and selectively records / reproduces information on / from one information recording disc, for example, a compact disc (hereinafter referred to as CD There is a CD changer that plays (call).

As shown in FIG. 8, a general CD changer currently on the market has a disc tray 143 for loading / unloading a CD into / from the apparatus main body in addition to the CD reproducing section 142.
And a stocker 14 for storing a plurality of CDs in the apparatus body
4 and the stocker 144 or the disc tray 143, and a carriage 145 for exchanging CDs between them.

When reproducing a CD, the designated CD is pulled out from the stocker 144 and placed on the carriage 145. Then, the carriage 145 descends to the height of the reproducing unit 142, and the reproduction of the CD is performed here.

[0005]

However, the above-mentioned CD
Although the changer can store a large number of CDs, it is necessary to provide a disc tray 143, a carriage 145, and a drive mechanism for these, which causes an increase in cost due to an increase in the number of parts. In addition, a space for installing the carriage 145 and its drive mechanism and the carriage 145.
It is necessary to secure a space or the like for vertically moving the device, which causes a problem of increasing the size of the device.

Therefore, the present invention has solved the above-mentioned problems and is capable of accommodating a large number of information recording disks, and simplifies the configuration to reduce the size of the apparatus and the number of parts. The present invention proposes a recording / reproducing apparatus for a possible information recording disc.

[0007]

In order to solve the above problems, according to the present invention, there is provided an information recording disk recording / reproducing apparatus for recording or reproducing information on a disk,
A single head that is provided with multiple magazines that support multiple disc holders that hold the discs in a stacked state so that they can move in a direction substantially perpendicular to the disc surface, and that is shared by the individual discs mounted in each magazine An arm having a portion is rotatably attached, a disc selecting means having a plurality of cam grooves is slidably attached to a magazine, and a selecting pin provided on each disc holder is associated with the disc selecting means. It is characterized in that a specific disc is moved to a position where recording and reproduction are possible according to the slide amount of the disc selecting means.

When recording or reproducing the information recording disc, the disc holder moves in the disc stacking direction,
A reproducing space is formed below the recording surface of the designated disc. Then, the arm rotates, and the head portion enters the reproducing space portion and is arranged close to the recording surface of the disc. In this state, the head section records or reproduces signals on the disk.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a recording / reproducing apparatus for an information recording disk according to the present invention.

In this embodiment, a reproduction-only compact disc (hereinafter referred to as a CD) is used as an information recording disc.
A CD changer that handles a CD will be described.

FIG. 1 shows an example in which a CD changer 1 according to the present invention is attached to an audio system component 121.
In this audio system component 121, a concave portion 124 having a substantially rectangular shape in plan view is provided on the upper surface of a cabinet 122 formed in a substantially rectangular parallelepiped shape, and a CD is provided on the bottom surface of the concave portion 124.
The changer 1 is attached. A cover plate 123 is openably and closably attached to the recessed portion 124.
Open and insert or remove the CD from the CD changer 1.

As shown in FIG. 2, the CD changer 1 is composed of a plurality (4 in this embodiment) of magazines 2 and an arm 51 which is rotatable. Arm 51
And each magazine 2 has a substantially rectangular base plate 11 with a recessed portion 124.
Each magazine 2 is attached to a support shaft 52 of an arm 51.
Are arranged in a radial pattern with a predetermined space therebetween.

As shown in FIGS. 3 and 4, the magazine 2 includes a disc holder body 21, two disc holders 22a and 2a.
2b and two link bodies 23a and 23b are provided, and three CDs can be stacked and housed in a direction substantially perpendicular to the CD surface (disk stacking direction).

The disc holder body 21 comprises a disc holder plate portion 24 for holding a CD and a rear edge portion 25 bent downward from the rear edge portion of the disc holder plate portion 24. The disc holder plate portion 24 is provided with a semicircular CD placement portion 26 having a diameter slightly larger than the diameter of the CD, and both ends of the CD placement portion 26 are connected by a band-shaped CD holding plate 131. It

At the center of the CD holding plate 131, there is a disc portion 1
33 is formed, and the rotary chuck part 132 is rotatably attached thereto. An opening 27 is opened at the center of the rotary chuck 132, and three claws 28 that are detachably engaged with the center hole of the CD are formed on the lower surface of the opening 27 at the edge thereof. The CD mounted on the rotary chuck 132 is held so that the front half of the CD projects from the disc holder body 21.

The rotary chuck portion 132 is configured to be rotatable because the turntable 53 (FIG. 2) is rotated by the rotation of the arm 51 (FIG. 2) as described later.
This is because the CD mounted on the rotary chuck unit 132 can be rotated when the CD is coupled to the second chuck unit.

As shown in FIGS. 5 and 6, connecting portions 29 are formed at both ends of the rear edge portion 25 of the disc holder body 21. On the other hand, a rear plate 12 is formed on the upper surface of the base plate 11 and is arranged close to the inner wall surface of the recessed portion 124. Supporting pieces 15, 15 are bent and formed toward both ends of the rear plate 12 toward the disc holder body 21 side. This support piece 15
The lower part of the connecting portion 29 of the disc holder body 21 is rotatably supported by the support shaft 30 on the outside of the disc holder body 2.
1 is rotatable. Further, as shown in FIG. 5, side plates 13 and 13 are erected on the base plate 11, and the disc holder body 21 abuts on the tops thereof,
As shown in FIG. 6, the disc holder body 21 is horizontally supported at a predetermined height.

Link bodies 23a, 23 shown in FIGS.
CD placement parts 31 and 31 which are cut out in a semicircular shape having a diameter slightly larger than the diameter of the CD are provided in b. Each link body 23
a, 23b has connecting piece portions 38, 38 bent downward from both side edges of the rear portion, and the connecting piece portions 38, 38 are connected by the connecting pins 40, 40 on both sides of the disc holder body 21. It is rotatably supported on the side surface of 29.

The link members 23a, 23b are provided with connecting piece portions 37, 37 which are bent downward from both side edges of both tip portions of the CD placement portion 31. The connecting pieces 37, 37 are for pivotally supporting the disk holders 22a, 22b described later. Further, the selection pin 4 is provided on one side of the connecting piece portion 37.
Projections 1a and 41b are provided.

On the other hand, the disc holders 22a and 22b are formed in a band shape, and a disc portion 134 is formed in the center thereof. A rotary chuck portion 141 is rotatably attached to the disc portion 134. An opening portion 32 is opened at the center of the rotary chuck portion 141, and three claw portions 33 that are detachably engaged with the center hole of the CD are formed at the edges of the opening portion 32 so as to project. On both sides of the disc holders 22a and 22b, connecting projections 34 are formed so as to project toward the link bodies 23a and 23b, respectively. The connecting pieces 37, 37 are rotatably supported by the connecting pins 39, 39 on the side surfaces of the connecting protrusions 34, 34 of the disk holders 22a, 22b.

The tips of the connecting projections 34 of the disk holders 22a and 22b serve as contact portions 35 (shown in FIG. 6) which are fitted and contacted with the lower surfaces of the link bodies 23a and 23b.
The disc holders 22a, 22b are regulated by the abutment of 5 so as not to rotate beyond a predetermined range. The CD mounted on the rotary chuck 141 is supported so that the front half of the CD projects from the disc holders 22a and 22b.

The magazine 2 is C as shown in FIG.
By opening and rotating the disc holder body 21 upward when the D is attached and detached, the disc holder body 21 and the disc holders 22a and 22b are opened in a fan shape. By closing the disc holder body 21,
The disc holders 22a and 22b are stacked in the disc stacking direction and housed in the magazine 2.

As shown in FIG. 2, the arm 11 is attached to the base 11.
1 is provided, and the arm 51 is configured to be rotatable 180 degrees about the support shaft 52 at the right end base. As shown in FIGS. 5 and 6, a turntable 53 for clamping the center hole of the CD and a motor 54 as a driving means for rotating the turntable 53 are attached to the tip of the arm 51, and the head is mounted on the arm 51. A laser pickup 55 as a unit is movably arranged along the arm 51. Therefore, the motor 54 and the laser pickup 55 are commonly used for any of the CDs mounted in the four magazines 2.

Then, the arm 51 is rotated by a drive mechanism (not shown), and the arm 51 is moved up and down by a lift mechanism (not shown) according to the height position of the selected CD. Further, the laser pickup 55 is sent along the arm 51 by a pickup moving mechanism (not shown). As the drive mechanism, the elevating mechanism, and the pickup moving mechanism, for example, a general feeding mechanism is used.

Further, as shown in FIG. 5, a cam plate for disc selection (disc selection means) is provided near the side surface of each magazine 2.
61 are slidably provided respectively. A rack 141 is formed on the lower edge of the disc selecting cam plate 61 as shown in FIG. 7, and a gear 142 meshing with the rack 141 is driven by a driving means (not shown) to move the disc selecting cam plate 61. To slide.

In the disc selecting cam plate 61, an introducing groove 65 having an opening on the upper surface is formed along the vertical direction toward the right side (on the rear plate portion 12 side in FIG. 6) in the drawing.
2 cam grooves 66a, 66b are formed toward the left side. Each of the cam grooves 66a and 66b includes an upper horizontal groove portion 67 horizontally formed from the introduction groove 65 toward the left side, an inclined groove portion 68 inclined downward from the upper horizontal groove portion 67 toward the left side, and a left side from a lower end of the inclined groove portion 68. It is composed of a lower horizontal groove portion 69 that is horizontally formed toward. The inclined groove portion 68 of the lower cam groove 66a is located on the right side of the inclined groove portion 68 of the upper cam groove 66b.

The selection pins 41a and 41b of the disc holders 22a and 22b enter the introduction groove 65 when the disc holder body 21 is closed. The upper horizontal groove portion 67 of each of the cam grooves 66a and 66b opening to the introduction groove 65 is formed by the introduction groove 65.
When the disc selection cam plate 61 slides to the right, the selection pins 41a and 41b are placed in the upper horizontal groove portions 67 of the cam grooves 66a and 66b. It is accessible.

As the disc selection cam plate 61 slides backward, first, the selection pin 41a of the lower disc holder 22a descends along the inclined groove portion 68, and then the selection pin 41b of the intermediate disc holder 22b. Is the inclined groove 6
Go down along 8. That is, each disc holder 22
The position where the selection pins 41a, 41b of a, 22b are located at the height of each upper horizontal groove portion 67 becomes the disc selection position of the first CD (the CD mounted in the lower disc holder 22a), and the lower disc. The position where the selection pin 41a of the holder 22a descends along the inclined groove portion 68 becomes the disc selection position of the second CD (the CD mounted in the intermediate disc holder 22b), and the selection pin 41b of the intermediate disc holder 22b becomes The position lowered along the inclined groove portion 68 is set to the third CD (C mounted on the upper disc holder body 21).
This is the disc selection position in D).

The operation of the present embodiment configured as above will be described. The CD changer is in a standby state when the CD is attached or detached. In the standby state, the cam plate 61 for disc selection
Is at the position shown in FIG. 7 (A), and the selection pins 41a, 41b of the disc holders 22a, 22b with respect to the introduction groove 65 are located.
Can be inserted and removed in the upward direction. Further, as shown in FIG. 2, the arm 51 has been moved to a position retracted from the magazine 2.

When mounting the CD, the lid 123 of the audio system component 121 is opened as shown in FIG. As a result, the CD changer 1 is exposed to the outside. By rotating the disc holder body 21 of the magazine 2 to be stored here upward, the disc holder body 21 and each disc holder 22a, as shown in FIG.
22b is opened like a fan.

The CD is inserted from the opened portions of the opened disc holder body 21 and the respective disc holders 22a and 22b, and the center hole of the CD is engaged with the respective claw portions 28 and 33, and the disc holder body 21 and the respective discs. Holder 22
It is stored in the CD placement portions 26 and 31 of a and 22b, respectively. After the CD is stored, by closing the disc holder body 21, the disc holder body 21 and the disc holders 22a and 22b are superposed in the disc stacking direction as shown in FIG. Further, when the CD is taken out, it can be taken out by the reverse operation to that when the CD is attached.

Next, a case where the reproduction of the first CD mounted on the disc holder 22a on the lower side of one of the magazines 2 is performed will be described. In the standby state of the CD changer 1, the disc selecting cam plate 61 is at the position shown in FIG. 7A, and the disc holders 22a and 22b (FIG. 4) are arranged in contact with the upper disc holder body 21 (FIG. 4). Therefore, a reproducing space is formed on the lower side of the first CD mounted on the lower disc holder body 22a.

Subsequently, as shown in FIG. 2, the arm 51 is moved up and down corresponding to the height position of the first CD by an elevator mechanism (not shown). The arm 51 is driven by a drive mechanism not shown.
When the laser is rotated, the laser pickup 55 enters the magazine 2 in which the designated CD is stored, and the turntable 53 is located below the rotary chuck 141 (FIG. 3) in which the center hole of the CD is connected. Is connected from. Then, the CD is rotated by the drive of the motor 54 (FIG. 6), and the laser pickup 55 moves on the arm 51 to read and reproduce the signal recorded on the CD. The arm 51
Since is rotatable, the turntable 53 can be connected to the CD of any magazine 2.

Next, the case of reproducing the second CD mounted on the intermediate disc holder 22b will be described. As shown in FIG. 7 (B), a disc plate selection cam plate 61.
Is moved by the rotation of the gear 142. By the movement of the disc selection cam plate 61, the selection pins 41a and 41b enter the upper horizontal groove portions 67 of the respective cam grooves 66a and 66b, and then only the lower selection pin 41a enters the inclined groove portion 68. 41 a descends along the inclined groove portion 68.

By lowering the lower selection pin 41a, as shown in FIG.
As shown in FIG. 6, the lower disc holder 22a and the CD are lowered substantially in parallel by the rotation of the link body 23a, and are reproduced below the second CD mounted on the intermediate disc holder 22b. A space portion A is formed.

Then, as shown in FIG. 2, the arm 51 moves up and down and rotates, so that the laser pickup 55 enters the magazine 2 in which the designated CD is stored.
The turntable 53 is connected from below to the rotary chuck 141 (FIG. 3) to which the center hole of the CD is connected. Then, the CD is rotated by the drive of the motor 54 (FIG. 6),
Laser pickup 55 moves on arm 51 and CD
The signal recorded in is read and reproduced.

Next, the case of reproducing the third CD mounted on the upper disc holder body 21 will be described. As shown in FIG. 7 (C), the disc plate selection cam plate 61
Is further moved by the rotation of the gear 142. As a result, the selection pin 41b of the intermediate disc holder 22b descends along the inclined groove portion 68.

When the intermediate selection pin 41b is lowered, the intermediate disc holder 22b (FIG. 4) and the CD are lowered by the rotation of the link body 23b (FIG. 4) while being kept substantially horizontal, and the upper disc holder body 21 (FIG. A space for reproduction is formed under the third CD mounted in 4).

Subsequently, as shown in FIG. 2, the arm 51 moves up and down and rotates, so that the laser pickup 55 enters the magazine 2 in which the designated CD is stored.
The turntable 53 is connected from below to the rotary chuck portion 132 to which the center hole of the CD is connected. Motor 54
The CD is rotated by driving (FIG. 6), and the laser pickup 55 moves on the arm 51 to read and reproduce the signal recorded on the CD.

As described above, by providing a plurality of magazines 2 in which the respective disc holders 22a and 22b for detachably mounting the CDs are connected by the respective plurality of link bodies 23a and 23b so as to be movable in the disc stacking direction, A large number of CDs can be stored and recorded or reproduced with a simple structure. In addition, the laser pickup 55 and the motor 5
By attaching 4 to the rotatable arm 51,
These parts can be shared for each magazine 2, and the number of parts can be reduced and the cost can be reduced.

In this embodiment, the magazine 2 is replaced by 4
Although the example in which the magazine 2 is provided is shown, the number of the magazines 2 to be installed is not limited to this, and may be a case where two or six magazines 2 are provided, for example. Further, the information recording disc includes reproduction only, both recording and reproduction. Therefore, the information recording disc is not limited to a compact disc, but includes a video disc, a magneto-optical disc capable of recording and reproducing, a magnetic disc, and the like.

[0042]

As described above, according to the present invention, in a recording / reproducing apparatus for an information recording disc for recording or reproducing information on the disc, a plurality of disc holders for holding the discs in a stacked state are provided on the disc surface. A plurality of magazines for movably supporting in a substantially vertical direction are provided, an arm having a single head unit shared for each disc mounted in each magazine is rotatably attached, and a plurality of cam grooves are provided. A disc selecting means having a disc is slidably attached to the magazine, and a selection pin provided on each disc holder is associated with the disc selecting means to record / reproduce a specific disc according to the slide amount of the disc selecting means. The feature is that it is moved to a possible position.

Therefore, according to the present invention, a plurality of magazines for accommodating a plurality of information recording disks are provided, and a single head unit is attached to a rotatable arm so that the head unit is shared by these magazines. Therefore, the configuration of the device can be simplified and the cost can be reduced. Further, since the disc holder on which the disc is mounted can be selectively moved in the laminating direction of the discs, there is an effect that the device can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an audio system component 121 equipped with a CD changer 1 which is a recording / reproducing apparatus for an information recording disc according to the present invention.

FIG. 2 is a top view of a CD changer.

FIG. 3 is a perspective view showing a configuration of a magazine 2.

FIG. 4 is a perspective view showing a state of the magazine 2 when reproducing the second CD loaded in the intermediate disc holder 22b.

5 is a top view showing a positional relationship between the arm 51 and the magazine 2. FIG.

FIG. 6 is a side sectional view showing a state of the magazine 2 when reproducing the second CD mounted on the intermediate disc holder 22b.

FIG. 7 is a diagram for explaining the operation of the disc selection cam plate 61.

FIG. 8 is a side sectional view showing a configuration of a conventional CD changer.

[Explanation of symbols]

 1 CD Changer 2 Magazines 22a, 22b Disc Holders 23a, 23b Link 41a, 41b Selection Pin 51 Arm 52 Spindle 53 Turntable 54 Motor 55 Laser Pickup 61 Disc Selection Cam Plate 66a, 66b Cam Groove 121 Audio System Component CD Information Compact disc as a recording disc

Claims (3)

[Claims] 1. An information recording disk recording / reproducing apparatus for recording / reproducing information on / from a disk, wherein a plurality of disk holders for holding the disks in a stacked state can be moved in a direction substantially perpendicular to the disk surface. A plurality of magazines for supporting the disc, a rotatably mounted arm having a single head portion shared by the discs mounted in the magazines, and a disc selecting means having a plurality of cam grooves. Is slidably attached to the magazine, and the selection pin provided on each disc holder is associated with the disc selecting means to record and reproduce the specific disc according to the sliding amount of the disc selecting means. A recording / reproducing apparatus for an information recording disc, characterized in that it is moved to a possible position. . 2. The plurality of magazines are radially arranged with a predetermined space therebetween with a rotation axis of the arm as a center so that the arm can be commonly used for the plurality of magazines. A recording / reproducing apparatus for an information recording disk according to claim 1. 3. A recording / reproducing apparatus for an information recording disc according to claim 2, wherein a disc driving means shared by the respective discs mounted in the respective magazines is attached to the arm.