JP3541553B2 - Information recording disk recording and playback device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording / reproducing apparatus for an information recording disk. More specifically, a plurality of magazines for movably supporting a disk holder on which a plurality of information recording disks are mounted are provided, and recording or reproduction is performed by a common head unit attached to a rotatable arm with respect to the disks stored in the magazine. The present invention relates to a recording / reproducing apparatus for an information recording disk, which can reduce the size of the apparatus and the number of components by performing the method.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as an information recording disk recording / reproducing apparatus for accommodating a plurality of information recording disks and selectively recording / reproducing information on one information recording disk, for example, a compact disk (hereinafter referred to as a CD) is reproduced. There is a CD changer to do.
[0003]
As shown in FIG. 8, a general CD changer currently on the market has a disk tray 143 for inserting and removing a CD into and from the apparatus main body and a plurality of CDs housed in the apparatus main body in addition to the CD reproducing section 142. And a carriage 145 for exchanging CDs between the stocker 144 and the disc tray 143.
[0004]
When playing a CD, the specified CD is pulled out from the stocker 144 and placed on the carriage 145. Subsequently, the carriage 145 descends to the height of the reproducing unit 142, where the reproduction of the CD is performed.
[0005]
[Problems to be solved by the invention]
However, while the above-described CD changer can store a large number of CDs, it requires the provision of the disk tray 143, the carriage 145, and a drive mechanism for these components, which causes an increase in the number of parts and an increase in cost. Further, it is necessary to secure a space for installing the carriage 145 and its driving mechanism, a space for the carriage 145 to move up and down, and the like, and there is a problem that the apparatus becomes large.
[0006]
In view of the above, the present invention has been made to solve the above-described problem, and is an information capable of accommodating a large number of information recording disks and capable of simplifying the configuration to reduce the size of the apparatus and reduce the number of parts. A recording / reproducing apparatus for a recording disk is proposed.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, in the present invention, an information recording disk recording / reproducing apparatus for recording or reproducing information on a disk includes a plurality of disk holders for holding the disks, and each of the disk holders is rotatable. The disk holder can be deformed into a state in which the disk holder opens in a fan shape and the disks can be attached and detached, and each disk holder overlaps in the disk stacking direction and multiple disks are stacked in the stacking direction. A plurality of magazines are provided in which disk holders held in a stacked state can move in a direction substantially perpendicular to the disk surface, and an arm having a single head shared by each disk mounted on each magazine is rotated. When the disk selecting means movably mounted and having a plurality of cam grooves is slidably mounted on the magazine, In addition, a selection pin provided on each disk holder is associated with the disk selection means, so that a specific disk is moved to a position where recording and reproduction can be performed according to the slide amount of the disk selection means. Things.
[0008]
When the information recording disk is to be attached or detached, each disk holder is opened in a fan shape by rotating the disk holder, and the disc is attached to or detached from the disk holder from an open portion of each disk holder. By closing the disk holders, the disk holders are superposed in the disk stacking direction.
When recording or reproducing an information recording disk, the disk holder moves in the disk stacking direction, and a space for reproduction is formed below the recording surface of the specified disk. Then, the arm is rotated, and the head unit enters the space for reproduction and is arranged close to the recording surface of the disk. In this state, the head unit records or reproduces signals on the disk.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of an information recording disk recording / reproducing apparatus according to the present invention will be described with reference to the drawings.
[0010]
In this embodiment, a CD changer that handles a compact disc for reproduction only (hereinafter referred to as a CD) as an information recording disc will be described.
[0011]
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 the audio system component 121, a substantially rectangular recessed portion 124 is provided on the upper surface of a cabinet 122 formed in a substantially rectangular parallelepiped, and the CD changer 1 is attached to the bottom surface of the recessed portion 124. A cover plate 123 is attached to the recessed portion 124 so as to be openable and closable. The cover plate 123 is opened, and a CD is attached to and detached from the CD changer 1.
[0012]
As shown in FIG. 2, the CD changer 1 includes a plurality of (four in this embodiment) magazines 2 and an arm 51 which is rotatable. The arm 51 and each magazine 2 are attached to the substantially rectangular base plate 11 of the recessed portion 124, and each magazine 2 is radially arranged with a predetermined interval centered on the support shaft 52 of the arm 51.
[0013]
The magazine 2 includes a disk holder body 21, two disk holders 22a and 22b, and two link bodies 23a and 23b as shown in FIGS. 3 and 4, and is arranged in a direction substantially perpendicular to the CD surface (disk stacking direction). Three CDs can be stacked and stored.
[0014]
The disk holder body 21 includes a disk holder plate 24 for holding a CD and a rear edge 25 bent downward from the rear edge of the disk holder plate 24. The disk holder plate portion 24 is provided with a semi-circular cutout CD arrangement portion 26 having a diameter slightly larger than the diameter of the CD, and both ends of the CD arrangement portion 26 are connected by a band-shaped CD holding plate 131. You.
[0015]
A disc portion 133 is formed at the center of the CD holding plate 131, and a rotary chuck portion 132 is rotatably attached thereto. An opening 27 is opened at the center of the rotary chuck portion 132, and three claw portions 28 which removably engage with the center hole of the CD are formed on the edge thereof so as to protrude downward. The CD mounted on the rotary chuck 132 is held so that the first half thereof protrudes from the disk holder 21.
[0016]
The rotatable chuck 132 is rotatable because the rotation of the arm 51 (FIG. 2) connects the turntable 53 (FIG. 2) to the rotary chuck 132, as will be described later. This is because the CD mounted on the CD can be rotated.
[0017]
As shown in FIGS. 5 and 6, connecting portions 29 are formed at both ends of the rear edge 25 of the disk holder 21. On the other hand, a rear plate 12 is formed on the upper surface of the base plate 11, and is disposed close to the inner wall surface of the concave portion 124. Supporting pieces 15, 15 are bent at both end edges of the rear plate 12 toward the disk holder body 21. The lower part of the connecting portion 29 of the disk holder 21 is rotatably supported by a support shaft 30 outside the support piece 15 so that the disk holder 21 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 top of the base plate 11, whereby the disc holder body 21 is brought into a predetermined position as shown in FIG. Supported horizontally at height.
[0018]
The link members 23a and 23b shown in FIGS. 3 and 4 are provided with semicircular notched CD placement portions 31 and 31 having a diameter slightly larger than the diameter of the CD. Each of the link bodies 23a, 23b has connecting pieces 38, 38 bent downward from both side edges of the rear part thereof, and the connecting pieces 38, 38 are connected by connecting pins 40, 40 on both sides of the disk holder body 21. Parts 29, 29 are rotatably supported on the side surfaces.
[0019]
Each of the link bodies 23a, 23b is provided with connecting piece portions 37, 37 bent downward from both side edges of both ends of the CD placement portion 31. The connecting pieces 37 are for pivotally supporting disk holders 22a, 22b described later. Further, selection pins 41a and 41b are protruded from one side of the connection piece 37, respectively.
[0020]
On the other hand, the disk holders 22a and 22b are formed in a band shape, and a disk portion 134 is formed at the center thereof. A rotary chuck portion 141 is rotatably attached to the disk portion 134. An opening 32 is opened at the center of the rotary chuck portion 141, and three claw portions 33 which are detachably engaged with the center hole of the CD are formed at the edge thereof. On both sides of the disk holders 22a and 22b, connecting projections 34 are formed to project toward the link bodies 23a and 23b, respectively. The connecting pieces 37 are rotatably supported by the connecting pins 39 on the side surfaces of the connecting protrusions 34 of the disk holders 22a, 22b.
[0021]
The distal end of the connecting projection 34 of the disk holders 22a, 22b becomes a contact portion 35 (shown in FIG. 6) which fits and contacts the lower surfaces of the link bodies 23a, 23b. , 22b are prevented from rotating beyond a predetermined range. The CD mounted on the rotary chuck 141 is supported so that the first half thereof protrudes from the disk holders 22a and 22b.
[0022]
Then, as shown in FIG. 3, the magazine 2 opens and rotates the disk holder body 21 upward when the CD is attached or detached, so that the disk holder body 21 and each of the disk holders 22a and 22b are opened in a fan shape. By closing the disk holder 21, the disk holder 21 and the respective disk holders 22 a and 22 b are stacked in the disk stacking direction and stored in the magazine 2.
[0023]
As shown in FIG. 2, an arm 51 is provided on the base 11, and the arm 51 is configured to be rotatable through 180 degrees around a 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. A laser pickup 55 as a unit is provided movably along the arm 51. Therefore, the motor 54 and the laser pickup 55 are commonly used for any CD mounted on the four magazines 2.
[0024]
Then, the arm 51 is rotated by a drive mechanism (not shown), and the arm 51 is moved up and down in accordance with the height position of the selected CD by an elevating mechanism (not shown). The laser pickup 55 is sent along the arm 51 by a pickup moving mechanism (not shown). As the driving mechanism, the lifting mechanism, and the pickup moving mechanism, for example, a general feed mechanism is used.
[0025]
As shown in FIG. 5, a disc selecting cam plate (disk selecting means) 61 is slidably provided near the side surface of each magazine 2. As shown in FIG. 7, a rack 141 is formed on the lower edge of the disc selecting cam plate 61, and the gear 142 meshing with the rack 141 is driven by a driving means (not shown) so that the disc selecting cam plate 61 is moved. Slide.
[0026]
The disc selection cam plate 61 is formed with an introduction groove 65 which is open on the upper surface on the right side in the figure (toward the rear plate portion 12 shown in FIG. 6) in the vertical direction, and two cams from the introduction groove 65 are formed. The grooves 66a and 66b are formed toward the left. Each of the cam grooves 66a and 66b includes an upper horizontal groove 67 formed horizontally from the introduction groove 65 to the left, an inclined groove 68 inclined downward from the upper horizontal groove 67 to the left, and a left side from the lower end of the inclined groove 68. And a lower horizontal groove 69 formed horizontally toward. The inclined groove 68 of the lower cam groove 66a is located to the right of the inclined groove 68 of the upper cam groove 66b.
[0027]
The selection pins 41a and 41b of the respective disk holders 22a and 22b enter the introduction groove 65 when the disk holder body 21 is closed. The upper horizontal groove 67 of each of the cam grooves 66a, 66b opening into the introduction groove 65 substantially coincides with the height position of each of the selection pins 41a, 41b that have entered the introduction groove 65, and the disc selection cam plate 61 moves rightward. The selection pins 41a and 41b can enter the upper horizontal groove 67 of each of the cam grooves 66a and 66b during sliding.
[0028]
As the disc selection cam plate 61 slides backward, first, the selection pin 41a of the lower disk holder 22a is lowered along the inclined groove 68, and then the selection pin 41b of the intermediate disk holder 22b is inclined. Descend along 68. In other words, the position where the selection pins 41a and 41b of the disk holders 22a and 22b are at the height of the upper horizontal groove 67 is the disk selection position of the first CD (CD mounted on the lower disk holder 22a). The position where the selection pin 41a of the lower disk holder 22a is lowered along the inclined groove 68 becomes the disk selection position of the second CD (the CD mounted on the intermediate disk holder 22b), and the intermediate disk holder 22b The position where the selection pin 41b is lowered along the inclined groove portion 68 becomes the disk selection position of the third CD (CD mounted on the upper disk holder body 21).
[0029]
The operation of the present embodiment configured as described above will be described. When a CD is loaded or unloaded, the CD changer is in a standby state. In the standby state, the disc selection cam plate 61 is at the position shown in FIG. 7A, and the selection pins 41a and 41b of the disc holders 22a and 22b can be inserted into and removed from the introduction groove 65 in the upward direction. Further, as shown in FIG. 2, the arm 51 has been moved to a position retracted from the magazine 2.
[0030]
When a CD is loaded, the lid 123 of the audio system component 121 is opened as shown in FIG. Thereby, the CD changer 1 is exposed to the outside. When the disk holder 21 of the magazine 2 to be stored is opened and rotated upward, the disk holder 21 and each of the disk holders 22a and 22b are opened in a fan shape as shown in FIG.
[0031]
A CD is inserted from the opened disc holder body 21 and the open portion of each of the disc holders 22a and 22b, and the disc holder body 21 and each of the disc holders 22a and 22a The CDs are stored in the CD placement sections 26 and 31 respectively. After the CD is stored, the disc holder body 21 is closed, so that the disc holder body 21 and each of the disc holders 22a and 22b are overlapped in the disc stacking direction as shown in FIG. Also, when taking out a CD, the CD can be taken out by the reverse operation of the mounting.
[0032]
Next, a case will be described in which the first CD mounted on the lower disk holder 22a of one of the magazines 2 is reproduced. 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 space for reproduction is formed below the first CD mounted on the lower disk holder 22a.
[0033]
Subsequently, as shown in FIG. 2, the arm 51 is moved up and down by a lifting mechanism (not shown) corresponding to the height position of the first CD. When the arm 51 is rotated by a drive mechanism (not shown), the laser pickup 55 enters the magazine 2 in which the specified CD is stored, and the turntable 53 is connected to the rotary chuck portion 141 to which the center hole of the CD is connected. (FIG. 3) is connected from below. Then, the CD is rotated by driving the motor 54 (FIG. 6), and the laser pickup 55 moves on the arm 51 to read and reproduce a signal recorded on the CD. Since the arm 51 is rotatable, the turntable 53 can be connected to any of the magazines 2 CD.
[0034]
Next, a case where the second CD mounted on the intermediate disk holder 22b is reproduced will be described. As shown in FIG. 7B, the disk selecting 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 grooves 67 of the respective cam grooves 66a and 66b, and then only the lower selection pins 41a enter the inclined grooves 68. 41 a descends along the inclined groove 68.
[0035]
When the lower selection pin 41a is lowered, the lower disk holder 22a and the CD are lowered substantially in parallel by the rotation of the link body 23a as shown in FIGS. 4 and 6, and are mounted on the intermediate disk holder 22b. A space A for reproduction is formed below the second CD.
[0036]
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 specified CD is stored, and the turntable 53 is connected to the center hole of the CD. To the rotating chuck 141 (FIG. 3). Then, the CD is rotated by driving the motor 54 (FIG. 6), and the laser pickup 55 moves on the arm 51 to read and reproduce a signal recorded on the CD.
[0037]
Next, a case where the third CD mounted on the upper disk holder 21 is reproduced will be described. As shown in FIG. 7C, the disc selecting cam plate 61 is further moved by the rotation of the gear 142. This causes the selection pin 41b of the intermediate disk holder 22b to move down along the inclined groove 68.
[0038]
By the lowering of the intermediate selection pin 41b, the intermediate disk holder 22b (FIG. 4) and the CD are lowered while being substantially horizontal by the rotation of the link body 23b (FIG. 4), and are moved to the upper disk holder body 21 (FIG. 4). A space for reproduction is formed below the third CD mounted.
[0039]
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 specified CD is stored, and the turntable 53 is connected to the center hole of the CD. Is connected to the rotating chuck portion 132 from below. The drive of the motor 54 (FIG. 6) rotates the CD, and the laser pickup 55 moves on the arm 51 to read and reproduce a signal recorded on the CD.
[0040]
As described above, a simple configuration is provided by providing a plurality of magazines 2 connected by a plurality of link members 23a and 23b so that the disk holders 22a and 22b for detachably mounting a CD can be moved in the disk stacking direction. Thus, a large number of CDs can be stored and recorded or reproduced. In addition, by attaching the laser pickup 55 and the motor 54 to the rotatable arm 51, these parts can be shared for each magazine 2 and the number of parts can be reduced to reduce the cost.
[0041]
In this embodiment, an example in which four magazines 2 are provided is shown. However, the number of magazines 2 is not limited to this, and for example, a case in which two or two magazines 2 are provided may be used. In addition, the information recording disk includes both a read-only type and both a recording type and a reproduction type. Therefore, information recording disks are not limited to compact disks, but include video disks, magneto-optical disks capable of recording and reproduction, and magnetic disks.
[0042]
【The invention's effect】
As described above, the present invention relates to an information recording / reproducing apparatus for recording / reproducing information on / from a disc, comprising a plurality of disc holders for holding the discs, and rotatably supporting each disc holder. The disk holder can be deformed into a state in which the disk holders open in a fan shape and the disks can be attached and detached, and each disk holder can be deformed into a state in which the disks overlap in the disk stacking direction and a plurality of disks are stacked in the stacking direction. A plurality of magazines are provided in which a disk holder to be held can move in a direction substantially perpendicular to the disk surface, and an arm having a single head shared by each disk mounted on each magazine is rotatable. A disk selecting means having a plurality of cam grooves is slidably mounted on the magazine, and It is characterized in that it has be moved to the recordable and reproducible position the particular disk in accordance with the amount of sliding of the disk selecting means by which a selection pin provided on Kuhoruda associated with disk selection means.
[0043]
Therefore, according to the present invention, a plurality of magazines for accommodating a plurality of information recording disks are provided, and a single head is attached to a rotatable arm so that the heads are shared by these magazines. In addition, it is possible to reduce the cost by simplifying the configuration of the device. In addition, the disk holder for mounting the disk can be opened and removed in a fan shape, and the disk can be attached and detached, and the disk holder can be selectively moved in the direction in which the disks are stacked, so that the device can be downsized.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of an audio system component 121 to which a CD changer 1 which is a recording / reproducing apparatus for an information recording disk according to the present invention is mounted.
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 a magazine 2 when reproducing a second CD mounted on an intermediate disk holder 22b.
FIG. 5 is a top view showing a positional relationship between the arm 51 and the magazine 2.
FIG. 6 is a side sectional view showing a state of a magazine 2 when reproducing a second CD mounted on an intermediate disk holder 22b.
FIG. 7 is a diagram for explaining the operation of a 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 Magazine 22a, 22b Disk holder 23a, 23b Link body 41a, 41b Selection pin 51 Arm 52 Support shaft 53 Turn table 54 Motor 55 Laser pickup 61 Disk selection cam plate 66a, 66b Cam groove 121 Audio system component CD information Compact disc as recording disc

Claims (3)

In an information recording disk recording / reproducing device that records or reproduces information on a disk,
A plurality of disk holders for holding the disk are provided, each of the disk holders is rotatably supported, the disk holder is opened in a fan shape, and the disk is detachable, and each of the disk holders is mounted in the disk stacking direction. A plurality of magazines are provided which can be deformed into a state in which a plurality of disks are stacked in a stacking direction, and in which the disk holder for holding the disks in a stacked state can move in a direction substantially perpendicular to the disk surface. And
An arm having a single head shared by each of the disks mounted on each of the magazines is rotatably mounted,
A disk selecting means having a plurality of cam grooves is slidably attached to the magazine, and a selection pin provided on each of the disk holders is associated with the disk selecting means, thereby reducing a sliding amount of the disk selecting means. A recording / reproducing apparatus for an information recording disk, wherein the specific disk is moved to a position where recording / reproduction is possible in response to the specific disk. 2. The plurality of magazines are radially arranged at predetermined intervals around a rotation axis of the arm so that the arm can be commonly used for the plurality of magazines. Recording / reproducing apparatus for the information recording disk described in the above. 3. The recording / reproducing apparatus for an information recording disk according to claim 2, wherein disk driving means shared with each of said disks mounted on each of said magazines is mounted on said arm.

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