JPH0982008A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent, for example, dust/dirt and an obstacle from entering inside by smoothly inserting and drawing out a disk. SOLUTION: An opening 5 opposed to a disk storage unit 2 built in the front surface side of an enclosure 1 is provided and an inner-edge part 5a1 of an inner lower surface 5a is made to be an arc-shaped curved edge along the peripheral surface of a rotary table 7. A disk cover 103 is provided at the upper portion of a part facing the opening 5 of the rotary table 7, its upper surface part corresponds to the inner upper surface of the opening 5, and both side surface parts 103b and 103c are made to correspond to an inner both side surfaces. The inner-edge parts 103b1 and 103c1 are arc-shaped curved edges along the outer-periphery edge of a disk being housed in the rotary table 7 and the space between the opening 5 and the periphery surface of the rotary table 7 and the gap with the outer-periphery edge of the disk to be stored are closed by upper surface parts 103a and the side surface parts 103b and 103c of the lower surface 5a and the disk cover 103.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for recording and / or reproducing by using a disk-shaped recording medium such as an optical disk or a magneto-optical disk as a recording medium, and in particular, a large number of disk-shaped recording media are stored. One disk-shaped recording medium is taken out from the disk-shaped recording medium housing unit, and an information signal such as a tone signal recorded on the taken-out disk-shaped recording medium is reproduced, or a tone signal or the like is recorded on the disk-shaped recording medium. The present invention relates to a disk device that records an information signal.

[0002]

2. Description of the Related Art In a conventional disc device, a disc insertion / removal opening for inserting / removing an optical disc into / from a disc storage unit is formed in a housing from the front side to the top side.
The lid that opens and closes the insertion / removal opening is also formed in an L-shaped cross section, and when it is opened, the lid is largely jumped upward, and the insertion / removal opening is configured to open from the front surface side to the upper surface side.
Then, the insertion / removal of the optical disk into / from the disk storage unit is performed from above.

[0003]

However, in the case of a disk device in which the disk insertion / removal opening is formed from the front surface side to the upper surface side and the optical disk is inserted / removed from above, the installation place is limited, that is, other equipment. It was inconvenient to use because it could not be installed on the lower side or in the middle of the shelf.

Further, since the insertion / removal opening is widely opened, the disk storage unit is largely exposed, and dust is likely to adhere to the inside of the disc. In addition, dust is apt to enter the inside, and therefore dustproof means must be provided. The configuration was complicated.

The present invention has been made in view of the above points, and has a simple structure that allows a disc-shaped recording medium such as an optical disc to be easily inserted into and removed from the storage unit, and an obstacle can be surely prevented from entering the inside. It is an object of the present invention to provide a disk device having such a structure.

[0006]

In order to achieve the above object, the present invention is rotatably supported around a support shaft, has a main surface formed in a substantially mountain shape, and has a plurality of radial portions centered around the support shaft. A disc-shaped recording medium storage unit provided with a storage section for holding each of the disc-shaped recording media, and one disc-shaped recording medium selected from a large number of disc-shaped recording media stored and held in the storage unit are provided. A recording and / or reproducing mechanism which is mounted and records an information signal on the disk-shaped recording medium or reproduces the recorded information signal, and is housed and held in any one housing portion provided in the disk-shaped recording medium housing unit. A disk device comprising a transport mechanism for feeding and / or returning the recorded disk-shaped recording medium to / from a recording and / or reproducing mechanism, the housing containing the disk device. An opening for inserting and removing the disc-shaped recording medium is provided on the front surface side corresponding to the disc-shaped recording medium storage unit, and an arcuate curved edge along the peripheral surface of the disc-shaped recording medium storage unit is provided on the inner lower surface of this opening. The inner side surfaces are formed with arcuate curved edges along the outer peripheral edge of the disk-shaped recording medium housed and held in the disk-shaped recording medium housing unit, and the inner upper surface covers the upper edge side of the disk-shaped recording medium. The cover surface is formed.

A cover for covering the upper peripheral surface of the disk-shaped recording medium is provided inside the opening so as to correspond to the upper part of the disk-shaped recording medium housing unit facing the opening. Arc-shaped curved edge portions are formed on both side surface portions along the outer peripheral edge of the disk-shaped recording medium.

With this configuration, the disc-shaped recording medium can be smoothly inserted into and removed from the housing unit with the cover surface of the disc-shaped recording medium on the inside upper surface side of the opening from the front side of the housing serving as a guide. The inner circumference of the opening is
By forming the cover surface portion on the upper surface side, the lower surface portion forming the arc-shaped curved edge portion along the peripheral surface of the storage unit, and the both side surface portions forming the arc-shaped curved edge portion along the outer peripheral edge of the disk-shaped recording medium, The space between the opening and the peripheral surface of the storage unit and the space between the upper peripheral edge and the outer peripheral edge of the disk-shaped recording medium are closed to prevent dust from entering the inside and accidental insertion of fingers, obstacles, etc. It

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 11 show one embodiment of the present invention, in which one optical disk is taken out from a disk housing unit which houses a large number of optical disks, and information signals such as tone signals recorded on the taken optical disk are recorded. FIG. 1 is an external perspective view of an auto-loading type CD player showing a specific example of a disc device for reproducing, in which the front door of the disc device of the present invention is opened, and FIG. 2 is a diagram of the disc device of the present invention. FIG. 3 is an external perspective view of the front door closed, FIG. 3 is a vertical cross-sectional side view of the disk device of the present invention with a part omitted, FIG. 4 is a plan view showing the internal structure, and FIG. 5 is a plan view of part of FIG. 6 is an enlarged view of an essential part of FIG. 3, which is a plan view of the disc transport mechanism, FIG. 7 is a perspective view showing the disc transport mechanism, FIG. 8 is a rear side perspective view of the portion shown in FIG. 7, and FIG.
11 to 11 are explanatory views showing the operating states of the disc transport mechanism of the disc device of the present invention.

As shown in FIGS. 1 and 2, the disk device of the present invention is an optical disk D showing a specific example of a disk-shaped recording medium in a housing 1 which constitutes a device body having a substantially rectangular shape.
Of a plurality of optical discs (100 in this embodiment), which is a disc-shaped recording medium storage unit, and a plurality of optical discs D stored in the disc storage unit 2. A disk carrying mechanism 3 showing a specific example of a recording medium carrying mechanism for taking out and carrying one optical disk D, and this disk carrying mechanism 3
The disc reproducing mechanism 4 or the like showing one specific example of the recording and / or reproducing mechanism for reproducing the information recorded on the optical disc D carried by the device is built in.

The housing 1 has a box-shaped box body 1a having an opening on the front side, and a front panel 1b for closing the front opening of the box body 1a. The opening 5 is formed. The opening 5 of the front panel 1b can be opened and closed by a front door 6 which is also rotatably attached to the front panel 1b. A part of the front side of the rotary table 7, which is the main body of the disk storage unit 2 rotatably incorporated in the box main body 1a, faces the interior of the opening 5 of the front panel 1b which is opened and closed by the front door 6. The optical disk D can be stored and taken out through the opening 5.

For this reason, the inner edge portion 5a ₁ of the inner lower surface 5a of the opening 5 is formed in a curved arc shape along the outer peripheral surface of the rotary table 7, and the inner edge portions of the inner both side surfaces 5b, 5c, that is, both inner side surfaces 5b, The inner edge portions 103b ₁ and 103c ₁ of both side surface portions 103b and 103c of the disk cover 103, which will be described later and continuously correspond to 5c, are the rotary table 7.
The optical disc D is housed in a circular arc shape along the outer peripheral edge of the optical disc D so that the rotary table 7 can be rotated without any hindrance, and the upper surface 103a of the disc cover 103 is continuously formed on the inner upper surface 5d of the opening 5. Corresponding, opening 5
Fingers or obstacles are prevented from being inserted into the inside from the inner peripheral portion.

Further, the front panel 1b has a power switch 8 for turning on / off the power supplied from an external power source.
a, an operation dial 8b that can rotate the rotary table 7 by a desired amount in either the left or right direction by a manual rotation operation, and many other operation switches 8
c (for example, a reproduction switch, a pause switch, a stop switch, etc.) is provided. These operation dials 8b
The input state by the operation switch 8c and the like, and the operation state such as performance based on the input are displayed by the display unit 9 (for example, a liquid crystal display) provided below the opening 5.

As shown in FIGS. 3 and 4, the disk storage device 2 arranged in the housing 1 has a rotary table 7 rotatably supported on the box body 3a side via a support shaft 7. And a table drive mechanism 11 for rotationally driving the rotary table 7 around a support shaft 10. The support shaft 10 penetrates through the center of the rotary table 7 and projects vertically, and at the upper end of its upper projection, a support pin 12a of an upper bearing plate 12 fixed to the upper plate of the box body 1a of the housing 1. Is rotatably fitted, and a support pin 13a of a lower bearing plate 13 fixed to the lower surface plate of the box body 1 is rotatably fitted to the lower end of the lower protrusion of the rotary table. 7 is rotatable in parallel with the bottom surface of the housing 1.

Further, the support shaft 10 has a lower surface piece 12 of an upper bearing plate 12 bent and formed so as to be parallel to the bottom surface of the housing 1.
b and the upper surface piece 13a of the lower bearing plate 13, the upper surface piece 13a of the lower bearing plate 13 supports the rotary table 7 from below, and the lower surface piece 1 of the upper bearing plate 12
The upward movement of the rotary table 7 is prevented by 2b, so that the rotary table 7 is always rotated horizontally at a predetermined height position.
Reference numeral 14 in the figure denotes a bearing ring fitted and fixed to the center of the upper portion of the rotary table 7.

As shown in FIGS. 3 and 9 to 11, the rotary table 7 has a disk mountain shape in which the central portion of the upper surface is bulged in a cylindrical shape, and the upper surface of the rotary table is inclined outward in the radial direction. A plurality of disk storage portions 15 (100 in this embodiment) are formed in the portion in a radial manner around the rotation center of the support shaft 10 as a specific example of the recording medium storage portion. More specifically, the rotary table 7 includes a disc-shaped inner supporting portion 16 and the inner supporting portion 16.
A ring-shaped outer support portion 17 which is concentrically arranged with a predetermined gap in the radial direction with respect to the inner support portion 16
And a large number of partition walls 18 that connect the outer supporting portions 17 to each other. The partition walls 18 are arranged at equal angular intervals in the circumferential direction by 10
There are provided 100 disk storage portions 15 each of which is a concave portion curved in an arc shape by providing zero.

The disk storage portion 15 of the rotary table 7 includes an inner receiving portion 20 provided on the upper surface of the inner supporting portion 16, an outer receiving portion 21 provided on the upper surface of the outer supporting portion 17, and an adjacent partition wall. It is composed of an operation port 22 formed of a slit-shaped opening provided between 18 and penetrating in the vertical direction. The inner receiving portion 20 and the outer receiving portion 21 are formed to have a substantially V-shaped cross section, and their bottom surfaces have a radius of curvature corresponding to the radius of curvature of the outer peripheral surface of the optical disc D, and V-shaped grooves 23 and 24 each having a substantially V-shaped cross section are provided. The lower portion of the optical disc D is supported by the V-shaped groove 24 of the outer receiving portion 21 and the outer peripheral side of the V-shaped groove 23 of the inner receiving portion 20, and the optical disc D is supported by the inner peripheral side of the V-shaped groove 23 of the inner receiving portion 20. The sides are supported.

Thus, when the optical disk D is stored in the disk storage portion 15 of the rotary table 7, both outer peripheral edges of the outer peripheral surface of the optical disk D come into contact with both slopes of the V-shaped grooves 23 and 24, respectively, and the optical disk is formed by these slopes. D
Is supported. In addition, the outer peripheral edges of the outer peripheral surface of the optical disc D contact with lines over substantially the entire length of the V-shaped grooves 23 and 24,
The optical disc D is held so as to be sandwiched from both sides by the two parallel planes including the contact line. Therefore, due to the action of the V-shaped grooves 23 and 24, the optical disc D is securely held by the disc storage portion 15 and vertically supported in a state of standing upright so as to be substantially vertical.

A ring-shaped first detection plate 25 and a second detection plate 26 are provided on the lower surface of the rotary table 7 so as to be concentric with each other about the support shaft 10. The first detection plate 25 has a diameter larger than that of the second detection plate 26, and the lower end surface thereof has slits formed at a constant pitch in the circumferential direction. The number of the slits is formed at the same pitch corresponding to the number of the disk storage portions 15 provided on the rotary table 7, and accordingly, 100 slits are provided in this embodiment.

On the other hand, the second detection plate 26 is located inside the first detection plate 25, and ten slits are provided on the lower end surface thereof at different pitches in the circumferential direction. The ten slits of the second detection plate 26 having different pitches and the 100 slits of the first detection plate 25 having the same pitch can identify the respective positions of the 100 disc storage portions 15. Then, three optical sensors 27, 28, 29 are provided in association with the first and second detection plates 25, 26.

Each of the three optical sensors 27 to 29 is composed of a combination of a light emitting element and a light receiving element, and is attached to a lower bearing plate 12 which pivotally supports the support shaft 10 of the rotary table 7, and a mounting plate 30. Is attached to.
For the first detection plate 25, the first optical sensor 27 and the second
Is installed at a predetermined distance from the optical sensor 28 of
A third optical sensor 29 is installed on the detection plate 26 of FIG. The first to third optical sensors 27 to 29 are set to output, for example, high-level detection signals when detecting the slit portions of the corresponding detection plates 25 and 26, for example.

The detection signals of the three optical sensors 27 to 29 are
It is configured so that it can be supplied to a control device (not shown), and through a predetermined arithmetic processing by the arithmetic processing device, 100 disc addresses corresponding to the 100 disc storage portions 15 can be specified. By thus specifying the position of the disc storage portion 15 of the rotary table 7 in 100, it is possible to accurately perform an operation such as taking out the optical disc D in the disc storage portion 15 having a desired disc number and playing back. it can.

On the lower surface side of the rotary table 7 and outside the first detection plate 25, both detection plates 25, 2 are provided.
A cylindrical lock plate 31 is provided so as to be concentric with the lock plate 6. The lock plate 31 is provided with 100 lock recesses 32 that are open to the outside in the radial direction at equal intervals in correspondence with the disc storage portion 15 of 100, and the stopper pin 33 is engaged with the desired lock recess 32. By doing so, the rotation of the rotary table 7 is stopped, the rotary table 7 is positioned at a desired position, and the disk storage unit 1 having a desired disk number is obtained.
The rotary table 7 can be locked with 5.

Reference numeral 34 shown in FIGS. 3 and 4 is a supporting roller for supporting the outer supporting portion 17 which is the outer peripheral edge of the rotary table 7 from below, and is composed of five supporting rollers 34 arranged substantially evenly in the circumferential direction. By supporting the outer peripheral edge of the rotary table 7, bending deformation of the outer peripheral edge of the rotary table 7 when the optical disk D is stored is prevented. The support roller 34 is rotatably attached to a support plate 35 attached to the box body 1a side by a support pin, and by the action of the support roller 34, for example, the optical discs D are stored in all the disc storage portions 15. The stability of rotation of the rotary table 7 and the like under heavy load such as time are secured.

Further, the outer peripheral surface of the rotary table 7, that is, the outer peripheral surface of the outer supporting portion 17, is provided with a gear portion 36 over the entire circumference thereof. The gear portion 36 is for rotating and driving the rotary table 7. The output gear 37a of the reduction gear train 37 of the table drive mechanism 11 is meshed with the rotary table 7 via the reduction gear train 37. It is connected to the drive motor 38 so that power can be transmitted. The reduction gear train 37 includes five gears including an output gear 37a and a driven pulley 37b, and a drive belt 39 is wound between the driven pulley 37b and a drive pulley 38a fixed to the rotation shaft of the table drive motor 38. It has been passed. The table drive motor 38 is directly fixed to the base plate 40, while the reduction gear train 37 is rotatably attached to the base plate 40 via a plurality of shafts.

As shown in FIGS. 7 and 8, a stand plate 41 is fixed to the base plate 40 so as to stand upright, and a disc carrying mechanism 3 and a disc reproducing mechanism 4 are provided in association with the stand plate 41. There is. As shown in FIG. 7, the stand plate 41 includes a standing plate portion 41a provided so as to stand vertically on the base plate 40, and a bearing portion continuously provided on one side in the plane direction of the standing plate portion 41a. 41b, and an opening window 41c is formed in the standing plate portion 41a. Stand plate 4
An arm bracket 42 is arranged in the first opening window 41c, and the chucking plate 43 is rotated below the arm bracket 42 by pivotally supporting the upper portion of the arm bracket 42 on the stand plate 41. It is held so that it can swing in the axial direction.

The chucking plate 43 is held by the arm bracket 42 so that the holding pieces 42a and 42b provided on the arm bracket 42 have a margin between the side flanges 43a and 43b of the chucking plate 43 in the rotational direction and the axial direction. Are engaged and held.

The arm bracket 42 is pivotally adjusted by the stand plate 41 by an adjusting mechanism 44 interposed between the arm bracket 42 and the standing plate portion 41a of the stand plate 41. The adjusting mechanism 44 is provided with an adjusting screw 44a which is screwed into the standing plate portion 41a of the stand plate 41 and abuts on the upper end portion of the arm bracket 42, that is, the side holding the chucking plate 43 and the opposite side with the shaft supporting portion interposed therebetween. The adjusting screw 44a is constructed by a tension spring 44b which is stretched in the vicinity of the adjusting screw 44a and constantly urges the arm bracket 42 toward the stand plate 41 side.
The arm bracket 42 is rotated by the forward / backward movement of the holding brackets 42a and 42b so that the holding pieces 42a and 42b can be rotationally adjusted so as not to come into contact with the chucking plate 43 in a chucking state described later.

As shown in FIG. 3, the stand plate 41
The base end of an upper bearing plate 12 that fixes and supports the support shaft 7 is fixed to the upper end of the. A disc guide 45 is arranged on one surface side of the upper bearing plate 12, and the disc guide 4
One end of 5 is rotatably supported on the tip side of the upper bearing plate 12, and the other end extends horizontally and is arranged above the arm bracket 43 so as to be vertically swingable. An engaging pin 46 is laterally inserted and engaged with an end portion of the disc guide 45 on the swinging side, and
The engagement pin 46 is fixed to an upper end portion of a guide link 47 that is held by the stand plate 41 so as to be slidable in the vertical direction on one surface side of the stand plate 41. As shown in FIGS. 6 and 7, the guide link 47
The lower end portion of the cam pin 48 is bent laterally and is arranged behind the cylindrical cam 50, and is fixed to the tip of the bent portion of the cam pin 48.
Is urged by the spring 49 to the disc guide driving cam portion 54 of the cylindrical cam 50.

The cylindrical cam 50 is provided with an optical system driving cam portion 51 provided on the upper surface of a cylindrical cam body, an arm driving cam portion 52 provided on the outer peripheral surface of the cam body, and a lower portion of the cam body. Gear portion 53, the disc guide driving cam portion 54 provided on the upper surface of the gear portion 53, and the gear portion 53.
Rotary table drive cam 55 provided on the lower surface of the
And a stopper pin driving cam portion 56 provided on the lower surface of the cam body. The cylindrical cam 50 is rotatably fitted to a pivot 57 that is erected on the base plate 40, and the upper part of the center of rotation is the base plate 40.
It is rotatably supported by a cam bracket 58 that is mounted upright.

The cam bracket 58 includes a fixed bracket 58a fixed to the base plate 40, and a support bracket 58b which is attached to the fixed bracket 58a in the height direction, that is, the axial direction of the cylindrical cam 50 so as to be adjustable by an adjusting mechanism 58c. The cylindrical cam 50 is rotatably engaged and supported by the support bracket 58b. The adjusting mechanism 58c is composed of an adjusting operator 58c ₁ having an eccentric shaft portion and an engaging elongated hole 58c ₂ .

An output gear 61a of a reduction gear train 61 of a cam drive mechanism 60 meshes with a gear portion 53 of the cylindrical cam 50, and the cylindrical cam 50 transmits power to a cam drive motor 62 via the reduction gear train 61. Connected as possible. The reduction gear train 61 is composed of seven gears including an output gear 61a and a driven pulley 61b, and a drive belt 63 is wound between the driven pulley 61b and a drive pulley 62a fixed to a rotation shaft of a cam drive motor 62. It has been passed. The cam drive motor 62 is fixed to the base plate 40, while the reduction gear train 61 is rotatably attached to the base plate 40 via a plurality of shafts.

Further, as shown in FIGS. 6 and 7, between the bearing portions 41b and 41d formed on the stand plate 41 in a substantially U-shape, the shaft sleeve 64 is formed with its center hole oriented in the lateral direction. Is fixed, and a rotary shaft 65 is rotatably inserted into and rotatably supported by a central hole of the shaft sleeve 64. A first arm 66 of the disk transport mechanism 3 is fixed to the tip of one of the protrusions of the rotary shaft 65 so as to be integrated in the rotational direction, and a sleeve 67 is provided inside the first arm 66. This sleeve 6 is movably fitted
A second arm 68 is fixed to 7 and is integrated in the rotational direction. An adjusting mechanism 69 of the disc transport mechanism 3 is provided on the other protruding portion side of the rotating shaft 65. The adjusting mechanism 69 is provided on the base plate 40 on the other side of the rotary shaft 65.
Outer side bearing portion 4 of the flange 65a fixed to the end portion of the protruding portion extending to the bearing portion 40a side of the stand plate 41
1d and a compression coil spring 69a interposed therebetween, and an adjusting screw 69b screwed into the bearing portion 40a of the base plate 40 so as to face the end surface of the rotating shaft 65.

The rotary shaft 65 is a compression coil spring 69.
The end face is constantly urged to slide outward by a and is abutted against the adjusting screw 69b, and is slid in the axial direction by the forward / backward movement of the adjusting screw 69b so that the first arm 66 and the second arm 68 are moved. The movement is adjusted in the inner / outer direction (arrow a in FIG. 7), that is, in the direction of the rotation axis of the disc.

The first arm 66 has an action piece 66a extending to one side in the radial direction of the rotary table 7 about the rotation axis 65 and an input piece 66b extending to the opposite side.
And the operating piece 66a is formed in a U-shape to avoid the outer supporting portion 17 of the rotary table 7,
The first conveying claw 71 is fixed to the tip portion thereof. Whether the first transport claw 71 supports the optical disc D stored in the disc storage portion 15 of the rotary table 7 from below and lifts it by the rotation of the first arm 66 to move it to the disc reproducing mechanism 4 side. Or, on the contrary, it is for returning the optical disc D mounted in the disc reproducing mechanism 4 to the disc storage portion 15. Therefore, the first transport claw 71 is used for each disk storage unit 1 of the rotary table 7.
5 has a shape corresponding to the planar shape of the operation port 22 so that the operation port 22 can be passed in the vertical direction, and a holding groove 71a for holding the optical disc D so as not to be detached is formed on the upper surface thereof. Has been done. A slide pin 72 is fixed to the tip of the input piece of the first arm 66.

The second arm 68 extends to the input side of the first arm 66, and the tip of the second arm 68 is bent to the side of the first arm 66. The transport claw 73 is fixed. The second transport claw 73 cooperates with the first transport claw 71 by the rotation of the second arm 68 to hold the optical disc D in a sandwiched state, and holds the optical disc D on the rotary table 7 and the disc reproducing mechanism 4. It is intended to be transported between and. Therefore, the second transport claw 73 is formed with a holding groove 73a for holding the optical disc D so as not to be demounted like the first arm 66, and the holding groove 73a is held by the operating claw 71. It is attached to the second arm 68 so as to face 71a. A slide pin 74 is fixed to a middle part of the second arm 68.

The slide pin 72 of the first arm 66.
A forked portion 75b provided at the tip of the horizontal portion 75a of the first L-shaped link 75 is slidably engaged with the. The first L-shaped link 75 is arranged on the side of the cylindrical cam 50 of the stand plate 41, and the two guide pins 76 fixed to the stand plate 41 are connected to the first L-shaped link 75.
The first L-shaped link 75 is slidably supported in the vertical direction by slidably engaging with the two elongated holes provided in the vertical portion 75c. Further, the forked portion 77b provided at the tip of the horizontal portion 77a of the second L-shaped link 77 is slidably engaged with the slide pin 74 of the second arm 68. The second L-shaped link 77 is arranged so as to be overlapped with the first L-shaped link 76 with a predetermined gap therebetween, and the two guide pins 7 are provided.
The second L-shaped link 77 is also slidably supported in the vertical direction by slidably engaging 6 with the two elongated holes provided in the vertical portion 77c of the second L-shaped link 77. .

An upper cam pin 78 projecting toward the cylindrical cam 50 is fixed to the base of the horizontal portion 75a of the first L-shaped link 75, and a cylindrical portion is provided at the base of the horizontal portion 77a of the second L-shaped link 77. A lower cam pin 79 protruding toward the cam 50 is fixed. The upper and lower cam pins 78 and 79 are provided on the cylindrical cam 50.
Are arranged so as to face each other in the vertical direction with the arm driving cam portion 52 interposed therebetween. A spring 80 is stretched between the first and second L-shaped links 75 and 77, and the spring force of the spring 80 causes the upper cam pin 7 to move.
8 is biased to the upper surface of the arm driving cam portion 52, and the lower cam pin 79 is biased to the lower surface of the arm driving cam portion 52. Due to the shapes of the upper and lower cam surfaces of the arm driving cam portion 52, the first arm 66 and the second arm 68 are given different movements as will be described later, so that the optical disc D can be transported.

The stopper pin driving cam portion 56 of the cylindrical cam 50 comprises a cam groove formed in a substantially C shape, and the stopper pin driving cam portion 56 has a cam pin 82 fixed to the base end of a slide lever 81. Are slidably engaged. The stopper pin driving cam portion 56 includes the cylindrical cam 50.
It is provided so as to be eccentric with respect to the pivot 57 which is the center of rotation of the slide lever 81.
Is given a predetermined slide amount. Slide lever 81
Has a tip extending toward the center of the rotary table 7 and a base end side guided by a lever pin 83 provided upright on the base plate 40, while the tip is rotatably connected to a base end of a swing lever 84. Has been done. A rotating shaft 85 is inserted in the middle of the swing lever 84, and the stopper pin 33 is fixed to the tip on the opposite side and protrudes upward. The rotating shaft 85 is erected on a support plate 86 slidably supported on the base plate 40.

Thus, by retracting the slide lever 81, the stopper pin 33 moves forward through the swing motion of the swing lever 84. As a result, the stopper pin 33
Enter into the lock concave portion 32 provided in the lock plate 31 of the rotary table 7, whereby the rotary table 7 is locked in the rotation direction. On the other hand, when the slide lever 81 is moved forward and the stopper pin 33 is retracted, the stopper pin 33 comes out of the lock concave portion 32, whereby the rotation direction lock of the rotary table 7 is released.

Further, the support plate 86 is provided with a long hole 86a extending in the direction in which the slide lever 82 extends and a plurality of long holes 86b extending in a direction intersecting with the long hole 86a. Protrusions bulging from the base plate 40 are engaged with a plurality of elongated holes 86b of the support plate 86, and by restricting the movement of the support plate 86 by these protrusions, the support plate 86 slides only in the intersecting direction. It is possible. An adjustment operator 87, which is rotatably supported by the base plate 40, is inserted into the elongated hole 86a of the support plate 86, and an eccentric shaft provided between the head and the shaft of the adjustment operator 87. Portion is long hole 86a
Is rotatably fitted in. The elongated hole 86a of the support plate 86 and the adjusting operator 87 constitute an adjusting mechanism.

Thus, by rotating the adjusting operator 87 to eccentrically move the eccentric shaft portion, the support plate 86 can be slid in the direction in which the elongated hole 86b extends in accordance with the amount of eccentricity of the eccentric shaft portion. In this way, when the adjustment operator 87 is rotated and the support plate 86 is slid, the rotation shaft 8
Since the position of the stopper pin 33 changes together with 5, the swing position of the stopper pin 33 changes accordingly. As a result, the lock position of the rotary table 7 that is locked at the forward position of the stopper pin 33 can be adjusted. In this way, by making the lock position of the rotary table 7 adjustable, the position of the slit-like operation port 22 of each disc storage portion 15 at a predetermined position of the rotary table 7 can be aligned with the first arm 66. it can.

Further, the disc guide drive cam portion 54 of the cylindrical cam 50 is composed of an arcuate ridge extending in the circumferential direction, and an inclined surface is provided at one end in the circumferential direction of the disc guide drive cam portion 54. The cam pin 48 can be moved up and down. The cam pin 48 is aligned with the cam portion 5 along the inclined surface.
The guide link 47 is lifted by an amount corresponding to the lift of the cam pin 48 when the guide link 47 is lifted up. By the function of the disc guide driving cam portion 54, the optical disc D
At the time of chucking, the cam pin 48 is lifted, and one end of the disc guide 45 is lifted through the operation of the guide link 47 and the engaging pin 46 which are integral with the cam pin 48. Thereby, it is considered that the optical disc D does not come into contact with the disc guide 45 even when the disc guide 45 is separated from the optical disc D and shake occurs during rotation.

Further, the rotary table driving cam portion 55 of the cylindrical cam 50 is composed of an arcuate ridge extending in the circumferential direction, and detects the rotational direction of the cylindrical cam 50 as shown in FIG. 3 and FIG. The control switch 88 is turned on / off by the circumferential edges of the rotary table driving cam portion 55. The detection signal of the control switch 88 is input to a control device (not shown) serving as control means having a CPU (central processing unit), RAM / ROM (storage device) and the like. Then, the control device executes predetermined arithmetic processing based on the detection signal of the control switch 88 and outputs the control signal to the table drive motor 38 and the cam drive motor 62, so that loading of the optical disc, reproduction performance, etc. will be described later. Run.

Further, the optical system driving cam portion 51 of the cylindrical cam 50 is composed of a substantially C-shaped cam groove, and the optical system driving cam portion 51 is also the stopper pin driving cam portion 5.
As in the case of No. 6, it is provided so as to be eccentric with respect to the pivot 57 which is the center of rotation of the cylindrical cam 50. As shown in FIG. 3, the optical disc driving cam portion 51 constitutes the disc reproducing device 4. A cam pin 92 fixed to the lower end of a frame plate 91 on which the optical pickup 90 is mounted.
Are slidably engaged with each other, and the eccentric amount of the cam portion 51 imparts a predetermined opening / closing operation to the frame plate 91.

That is, as shown in FIGS. 3 and 4, the frame plate 91 is the cylindrical cam 5 of the stand plate 41.
It is arranged so as to face the 0 side with a predetermined interval. Further, a support shaft 59 provided on the cam bracket 58 and a support shaft 93a provided on the arm bracket 93 fixed to the upper surface of the stand plate 41 pivotally support the rear upper and lower ends of the frame plate 91, and thereby the frame. The rotary table 7 side of the plate 91 is swingable in the left-right direction. Further, the frame plate 91
The cam pin 92 is provided at the lower part of the above, and the cam pin 92 is moved by the optical system driving cam portion 51 so that it can be opened and closed on the lower cylindrical cam 50 side.

A plurality of mounting means 9 are mounted on the frame plate 91 which can be swung to the right and left and downward as described above.
The mounting plate 95 is elastically supported in the front-back, left-right and up-down directions through the mounting plate 9.
5 is configured to absorb the vibration applied thereto.
A spindle motor and a pickup drive motor 96 are fixed to the attachment plate 95, and a disc table 97 is attached to the rotary shaft of the spindle motor. The disk table 97 is provided with a truncated cone-shaped convex portion so that the optical disk D can be aligned and held, and the chucking plate 43 is arranged so as to be able to approach and separate so as to face the disk table 97. There is.

A feed screw shaft 99 is connected to a pickup drive motor 96 mounted on a mounting plate 95 via a reduction gear train 98, and the feed screw shaft 99 is a feed screw shaft fixed to one side of the optical pickup 90. Nut 100
Are screwed together. The feed screw shaft 99 is a mounting plate 95.
The guide rail 101 is rotatably supported by the mounting plate 95 so as to be parallel to the feed screw shaft 99.
It is provided in. A bearing member 102 fixed to the other side of the optical pickup 90 is slidably engaged with the guide rail 101, and the optical pickup 90 is movable between the guide rail 101 and the feed screw shaft 99. Is held.

Thus, the rotational force of the pickup drive motor 96 is transmitted to the reduction gear train 98 to rotate and drive the feed screw shaft 99, whereby the optical pickup 90 is guided by the guide rail 101 in the radial direction of the disc table 97. Move to move closer or farther. When the optical pickup 90 moves, the information recorded on the recording surface of the optical disc D is read, and the reproduction performance or the like is executed. Therefore, the optical pickup 90 contains a light source such as a laser diode, a predetermined optical device such as a beam splitter and a collimator lens, and a photodiode and the like.

As shown in FIGS. 3 and 5, a disc cover 103 is attached to the inner side of the opening 5 of the front panel 1b from above to both sides of the rotary table facing the opening 5. It is screwed to the upper bearing plate 12 by a bracket 104. In the disc cover 103, the rear half 103a ₁ of the upper surface 103a is bent in an arc shape so that the optical disc D accommodated in the disc accommodating portion 15 of the rotary table 7 can pass in the vertical direction, and the both side surface portions 103b and 103c are curved. Inner edge portions 103b ₁ and 103c ₁ from the inner edge to the upper edge are curved and formed in an arc shape, and the optical disc D is vertically inserted from the opening 5 of the front panel 1b and stored in the disc storage portion 15 of the rotary table 7. In addition to serving as a guide for closing, the inner upper portion of the opening 5 is closed to prevent accidental insertion of fingers, obstacles, and the like.

A semi-circular disc protrusion prevention frame 105 is provided from the disc cover 103 so as to correspond to the upper half of the rotary table 7 on both sides.
By the pop-out prevention frame 105, each disc storage unit 1
The optical disc D is prevented from jumping out from the optical disc 5.

Further, as shown in FIG. 3, an optical disc D having a predetermined diameter, which is accommodated in the disc accommodating portion 15 of the rotary table 7, is radially outside the rotary table 7 and near the disc transport mechanism 5. Optical sensor 1 for detecting the presence or absence of (CD of 12 cm in diameter in this embodiment)
10 are provided. The optical sensor 110 includes a light emitting portion 111 that is fixed to the bottom plate side of the box body 3a and emits predetermined light, and a light receiving portion 112 that receives light from the light emitting portion 111 that is fixed to the top plate side of the box body 3a. It consists of and. For example, a light emitting diode (LED) can be applied as the light emitting unit 111 of the optical sensor 110, and, for example, a phototransistor can be applied as the light receiving unit 112.

The light emitting portion 111 and the light receiving portion 112 of the optical sensor 110 are located outside the rotary table 7 in the radial direction at a position where they do not come into contact with the optical disc D supported substantially vertically in the disc housing portion 15. Moreover, the optical axis L is arranged so as to intersect the plane (vertical surface) of the optical disc D. That is, as shown in FIG. 3, the light emitting section 111 is fixed to the mounting panel 113 with the light emitting port of the light directed upwards.
3 is attached to a support piece 40a formed on the base plate 40. The light receiving portion 112 is fixed to a mounting panel 114, and the mounting panel 114 is mounted on the upper bearing plate 12.

The disk device having such a structure is
For example, by using as follows, a desired one optical disk D can be selected from a plurality of optical disks D and a reproduction performance can be executed. First, an appropriate number of optical disks D are stored in the disk storage unit 2 in the housing 1. In this embodiment, 100 disc storage portions 15 are set on the rotary table 7 of the disc storage unit 2, and each disc storage portion 15 has one disc storage portion 15.
You can store optical discs D one by one, so you can store at most one at a time.
It is possible to store 00 optical disks D. The size of the optical disk D used is generally 12 cm, but an optical disk of 8 cm can be used by using an adapter.

In this case, the work of housing the optical disk D in each disk housing portion 15 of the disk housing unit 2 is first performed manually. First, as shown in FIG. 1, the front door 6 at the center of the front panel 1b is pulled toward the front to open the opening 5 to expose the front side of the rotary table 7. Next, the optical disc D held in the hand is inserted vertically into the opening 5, and the optical disc D is stored in the disc storage portion 15 located on the front side of the rotary table 7. When housing a plurality of optical disks D, the front operation dial 8b is rotated in an arbitrary direction to rotate the rotary table 7 to the right or left to search for an empty disk housing portion 15 and search for the optical disk D. To store.

At this time, unique addresses 1 to 100 are assigned to the 100 disk storage portions 15, and the position of the rotary table 7 is controlled by a control device for controlling the operation of the disk device. It is performed based on the above address. Therefore, at the time of subsequent reproduction and performance, etc., each disk storage unit 1 of the disk storage unit 2
The relationship between the address No. 5 and the optical disc D accommodated in the disc accommodating portion 15 corresponding to the address needs to be clarified in advance.

Therefore, in this type of disc device, a storage device that can freely write and erase information is usually provided, and when the optical disc D is stored, the information of the stored optical disc D is input for each address. It is possible. The information on the optical disc D is the front panel 1b.
The information about the optical disc D stored in the disc storage unit 15 located in front of the loadable disc transport mechanism 3 can be displayed by the display unit 9 disposed on the front surface of the disc. Is displayed.

When the optical disc D is stored in the disc storage portion 15 of the rotary table 7 in this way, in the case of this embodiment, the optical disc D is held in a substantially vertical state in each disc storage portion 15. . That is, since both outer peripheral edges are supported on the outer peripheral surface of the optical disc D by the V-shaped grooves 23 and 24 of the disc storage portion 15, the optical disc D can be securely held in a substantially vertical state without rattling. You can

Thus, as in the present embodiment, 100 disc storage portions 15 are arranged on the rotary table 7 arranged on the same circumference, and the optical disc D is stored in each disc storage portion 15 and supported in a donut shape. Then, inside the rotary table 7, the gap between the adjacent optical discs D can be narrowed as much as possible, whereby the space in the housing 1 can be reduced and the entire disc device can be miniaturized. It is possible to secure a sufficiently large gap on the outer side in the radial direction of the rotary table 7 between the adjacent optical discs D.

Next, a case will be described in which the optical disk D stored in the disk storage portion 15 of the rotary table 7 is taken out by the disk transfer mechanism 5 and transferred, and is mounted on the disk reproduction mechanism 4 to perform reproduction performance. The operation of transporting the optical disc D can be performed as follows, for example.

In the initial state before this operation is started, the stopper pin 33 is in the retracted position by the action of the stopper pin driving cam portion 56 of the cylindrical cam 50, as shown in FIG. 7 is not engaged with any of the lock recesses 32 provided in the lock plate 31 of No. 7, and therefore the rotary table 7 is in a rotatable state. The rotary table driving cam portion 55 of the cylindrical cam 50 is in contact with the operating element 88a of the control switch 88, and the detection signal thereof is input to the control device. Further, as shown in FIG. 3, by the action of the arm driving cam 52 of the cylindrical cam 50, the first arm 66 is pushed down and positioned below the rotary table 7, while the second arm 68 moves backward. It is located below the chucking plate 43.

Furthermore, due to the function of the optical system driving cam portion 51 of the cylindrical cam 50, the rotary table 7 side of the frame plate 91 is slightly opened, and the disc table 97.
Are separated from the chucking plate 43. On the other hand, the cam pin 48 is provided on the disc guide driving cam portion 54.
Are not in contact with each other, and the guide link 47 has a spring 49.
The disk guide 45 is in the lowered state because it is pushed down by the spring force of.

From this state, after turning on the power switch 8a shown in FIG. 1 to supply power to the disk device,
The optical disk D desired to be reproduced and played is selected, and the address number of the disk storage portion 15 in which the selected optical disk D is stored is input by the operation switch 8c. in this case,
The optical sensor 110 constantly (or at every predetermined timing) detects whether or not the optical disc D is stored in the disc storage portion 15 of the rotary table 7 located at the take-out position of the optical disc D by the disc transport mechanism 5. The detection signal is input to the control device.

That is, when the light emitting section 111 of the optical sensor 110 emits light, the light travels toward the light receiving section 112 oppositely disposed on the optical axis within the range limited by the shape of the light emitting port 111a. At this time, when the optical disc D is present in the disc storage portion 15 located at the ejecting position, the light-shielding portion outside the optical axis of the optical disc D blocks the progress of the light, so that the light is received by the light receiving portion 112. Not done. Therefore, the light receiving unit 112 sends a detection signal indicating that the predetermined light is not received to the control device. Based on this detection signal, the control device determines that the optical disc D is in the disc storage portion 15 at the eject position, and also determines the address number of the disc storage portion 15 based on the detection signals from the three optical sensors 27 to 29. to decide. Then, these judgment results are displayed on the display unit 9 of the front panel 1b.

On the other hand, when the optical disk D is not housed in the disk housing portion 15 at the take-out position, the light from the light emitting portion 111 is directly received by the light receiving portion 112, so that the light receiving portion 112 has a predetermined size. A detection signal indicating that light is received is sent to the control device. Based on this detection signal and the detection signals from the optical sensors 27 to 29, the control device determines that there is no optical disc D in the disc storage portion 15 at the ejection position, determines the address number, and displays it on the display portion 9. indicate.

Thus, by providing the optical sensor 110, the optical disk D can be stored in the disk storage portion 15 at the eject position.
It is possible to instantly determine whether or not is stored. Therefore, in a CD changer capable of accommodating as many as 100 optical discs D at a time, the target optical disc D can be searched easily and in a short time from the accommodated optical discs D, and desired music or the like can be quickly performed. Can be played. Moreover, since the optical axis of the optical sensor 110 is provided on the outer peripheral portion of the rotary table 8,
As shown in FIG. 7, an optical disc Dd having a smaller diameter than the optical disc D to be detected (for example, a CD having a diameter of 8 cm) is not detected. Therefore, this optical sensor 110 can detect only CDs of a target size, excluding CDs having different diameters.

Further, the optical axes L of the light emitting section 111 and the light receiving section 112 are arranged so as to intersect with the plane of the optical disc D, so that the surface of the optical disc D is irradiated with light and not only the light directly input but also the reflected light is received. Since light is also received, it is possible to configure the optical sensor 110 using an inexpensive photoelectric conversion element such as a light emitting diode or a phototransistor. Furthermore,
Since it is an optical sensor, it is possible to maintain the quietness of the disk device without generating operation noise unlike the mechanical sensor.

The rotary table 7 can be rotated by manually turning the operation dial 8b. In this case as well, the address number of the disc storage portion 15 moved to the eject position is displayed on the display portion 9. . At this time, the contents of the optical disc D can be visually confirmed by opening the front door 6 and looking at the label of the optical disc D accommodated in the disc accommodating portion 15 facing the opening 5.

Next, the selection signal of the optical disc D selected as described above is input to the control device, whereby the control device sequentially outputs a predetermined control signal, and the table drive motor 39 and the cam drive are driven. Motor 6
2 is drive-controlled. The control device first supplies a drive current to the table drive motor 38 of the table drive mechanism 9, transmits the rotational force of the rotation shaft to the gear portion 36 of the rotary table 8 via the drive belt 39 and the reduction gear train 37, The rotary table 7 is rotationally driven until the disc storage portion 15 in which the selected optical disc D is stored moves to the take-out position which is the front portion of the disc transport mechanism 5.

When the desired disk storage portion 15 is installed opposite to the front portion of the disk transport mechanism 3 by the rotation of the rotary table 7, the control device causes the cam drive motor 6 to move.
2 is supplied with a drive current to rotate its rotary shaft to transmit the rotational force to the gear portion 53 of the cylindrical cam 50 via the drive belt 63 and the reduction gear train 61, so that the cylindrical gear 50 moves in one direction (for example, the forward rotation direction). ) To rotate. As a result, first, the cam pin 8 engaged with the stopper pin driving cam portion 56 is
2 moves to the rotation center side of the cylindrical cam 50 to retract the slide lever 81, and swings the swing lever 84 around the rotation shaft 85.
By swinging the stopper pin 33 to the rotary table 8
Rock to the side. As a result, the stopper pin 33 enters the lock concave portion 32 corresponding to the selected disc storage portion 15, and thereby the rotary table 7 is locked at the desired position.

A little later than the movement of the stopper pin 33, the cam portion 52 is actuated by the operation of the arm driving cam portion 52.
Slide pin 72 fixed to the first L-shaped link 75 biased to the upper surface of the slide pin 7 and the slide pin 7 fixed to the second L-shaped link 77 biased to the lower surface of the cam portion 52.
4 and 4 close each other, that is, the upper slide pin 72 is pushed down, while the lower slide pin 74 is pulled up. As a result, the bifurcated portion 75b provided at the tip of the horizontal portion 75a of the first L-shaped link 75 pushes down the slide pin 72 slidably engaged with this, while the horizontal portion 75a of the second L-shaped link 77 is horizontal. The forked portion 77b provided at the tip of the portion 77a pulls up the slide pin 74 slidably engaged with the forked portion 77b.

As a result, in FIGS. 3 and 9, the first arm 66 pivots counterclockwise about the pivot shaft 65, while the second arm 68 opposes the pivot shaft 65. Rotate clockwise. Then, as shown in FIG. 9, the first conveying claw 71 provided at the tip of the first arm 66 enters the operation port 22 of the disc storage portion 15 of the upper surface of the rotary table 7 selected from below, and the disc concerned. Storage 1
The optical disc D accommodated in the optical disc 5 is pushed up from below and taken out from the disc accommodating portion 15, and the second transport claw 73 provided at the tip of the second arm 68 causes the optical disc D to move.
And holds the optical disc D so that the optical disc D is sandwiched in the diametrical direction. When the cylindrical cam 50 further rotates in the normal rotation direction, only the rotation direction of the second arm 68 reverses, and the first and second transport claws 71 and 73 are rotated.
Cooperate to rotate counterclockwise.

Such first and second arms 66, 6
By the rotation of 8, the optical disk D is guided by the disk guide 45 and moved to the disk reproducing mechanism 4 side. And
When the optical disc D is held by the first and second transfer claws 71 and 73 and moves to a predetermined chucking position, the opening side of the frame plate 91 is closed by the action of the optical system driving cam portion 51, and the optical disc D is rotatable therewith. The disk table 97 held in parallel with the chucking plate 43 held in the stand plate 41. As a result, the chucking plate 43 is attracted to the disc table 97 across the optical disc D by the magnetic force of the magnet fixed to the chucking plate 43. As a result, the optical disc D is rotatably held on the disc table 97, and the chucking operation of the optical disc D is completed.

After the chucking operation is completed, as shown in FIG. 11, the second arm 68 further rotates counterclockwise so that the second carrying claw 73 is separated from the optical disc D, while the first arm 68 is rotated counterclockwise. The arm 66 rotates in the opposite clockwise direction to the extent that the first conveying claw 71 moves away from the optical disc D.
At the same time, the cam pin 48 fixed to the guide link 47 is pushed up by the action of the disc guide driving cam portion 54, and the guide link 47 is raised by the pushing amount. As a result, the outer end of the disc guide 45 is lifted by the engaging pin 46 fixed to the guide link 47 so as to be separated from the optical disc D by an appropriate amount. As a result, the preparation for the reproduction performance of the optical disc D is completed.

It is to be noted that the first and second conveying claws 71 and 73 and the disc guide 45 are separated from the optical disc D by an appropriate amount because the optical disc D is shaken by excessive vibration during reproduction or the like. Even if
This is to prevent the optical disc D from coming into contact with the first transport claw 70 and the like.

Thereafter, the control device outputs a control signal for reproduction and performance, drives the spindle motor to rotate the optical disc D mounted on the disc plate 97, and drives the pickup drive motor 96 to drive the optical disc D. The pickup 90 is moved in the radial direction of the optical disc D. At this time, the optical pickup 90 reads the information recorded on the information recording surface of the optical disc D, and the reproduction performance is executed based on the read information.

When the desired reproduction performance is completed, the control device causes the cam drive motor 62 and the table drive motor 3 to operate.
A control signal for rotating and driving 8 in the opposite direction to the above is output, and a transport operation for returning the optical disc D to the disc storage device 4 is performed. First, the control device outputs a control signal for rotationally driving the cam drive motor 62 in the direction opposite to the rotational direction, and rotationally drives the cylindrical cam 50 in the reverse direction opposite to the normal direction. As a result, from the state shown in FIG. 11, the guide link 47 is pushed down via the cam pin 48 by the rotation of the disc guide driving cam portion 54 of the cylindrical cam 50, and the engagement pin 46 that is integral therewith is lowered so that the disc guide is guided. The outer end of 45 is pulled down and approaches the upper side of the optical disc D.

At the same time, the rotation of the arm driving cam portion 52 of the cylindrical cam 50 causes the upper and lower cam pins 78 and 79 to move up and down, and the upper cam pin 78 is first pushed down to move the first L-shaped link 75. While the lower cam pin 79 is pulled up, the second L-shaped link 77 rises. As a result, in FIG. 10, the first arm 66 rotates counterclockwise, and the first transport claw 71 moves to the optical disc D.
While the second arm 68 rotates clockwise, the second carrying claw 73 approaches the optical disc D and supports it from the rear side.

A little later than this, the optical system driving cam portion 5
The rotation of 1 moves the cam pin 92 to the side of the pivot 57 that supports the cylindrical cam 50, and opens the rotary table 8 side of the frame plate 91. As a result, the disc table 97 is separated from the chucking plate 44 against the attraction force of the magnet, the optical disc D is released, and the loading state is released. As a result, the optical disc D is supported by the first transport claw 71 and the second transport claw 73 from the lower front and rear sides from below, and the upper part is guided by the disc guide 45.

When the cylindrical cam 50 further rotates in the reverse direction, the arm driving cam portion 52 rotates, whereby the upper cam pin 7 is rotated.
8 is pushed up and the lower cam pin 79 is pulled up, so that the first L-shaped link 75 and the second L-shaped link 78 both rise. As a result, as shown in FIG. 9, both the first arm 66 and the second arm 68 rotate clockwise about the rotation shaft 65. As a result, as shown in FIG. 9, the optical disc D moves to the rotary table 7 side along the disc guide 45, and the first conveying claw 70 passes through the operation port 22 of the disc storage portion 15 to move the rotary table 7. By moving downward, the optical disc D is returned to the original disc storage portion 15.

At the same time, the slide lever 81 is pushed out by the rotation of the rotary table driving cam portion 55, so that the stopper pin 33 retracts through the swing of the swing lever 84 and engages with the lock recess 32. Is canceled. As a result, the rotary table 8 becomes rotatable and the operation for reproducing and playing the next optical disk D becomes possible.

The disk device configured as described above is
By forming the opening 5 on the front surface side of the housing 1, the optical disk D can be positioned from the front surface side of the housing 1 to the inner upper surface side of the opening 5 with respect to the rotary table 7 which is the main body of the disk storage unit 2. The upper surface portion 103 of the disc cover 103
A can be used as a guide to perform smoothly.

The inner peripheral portion of the opening 5 has an arcuate curved edge portion 1 along the upper surface portion 103a of the disc cover 103 and the outer peripheral edge of the optical disc D housed in the rotary table 7.
03b ₁ and 103c ₁ are formed on both side surface portions 103b,
103 c and the inner lower surface 5 a of the opening 5 having the arcuate curved edge 5 a ₁ along the peripheral surface of the rotary table 7 between the opening 5 and the peripheral surface of the rotary table 7. Also, the gap between the upper edge and the outer edge of the optical disc D is closed to prevent dust from entering the inside and accidental insertion of fingers, obstacles and the like.

Although the embodiment of the present invention has been described with respect to the case where the disc storage unit is constituted by the rotary table, the disc table storage unit may be configured to be moved linearly, and in this case, the opening is provided. The inner edge portion of the inner lower surface 5a of the portion 5 is formed linearly. Further, the configurations and shapes of other members can be changed without departing from the spirit of the present invention. Further, in the above example, the example in which the disc device according to the present invention is applied to the reproducing device for the optical disc has been described, but it is also applied to the recording and / or reproducing device using various disc-shaped recording media such as a magneto-optical disc. it can.

[0085]

As described above, in the disk device according to the present invention, when the disk-shaped recording medium is inserted into or removed from the housing unit, the covering surface of the disk-shaped recording medium on the inside upper surface side of the opening from the front side of the housing serves as a guide. In addition, the inner peripheral portion of the opening has an arcuate curve along the outer peripheral edge of the disk-shaped recording medium and the cover surface on the upper surface side and the arcuate curved edge along the peripheral surface of the storage unit. By forming the both side surfaces forming the edge portion, the space between the opening portion and the peripheral surface of the storage unit and between the upper peripheral edge and the outer peripheral edge of the disk-shaped recording medium is closed to prevent dust from entering the interior. It is possible to prevent invasion of the robot and accidental insertion of fingers, obstacles, etc., and further improve safety.

[Brief description of drawings]

FIG. 1 is an external perspective view of a disk device according to the present invention with a front door opened.

FIG. 2 is an external perspective view of the disk device according to the present invention with the front door closed.

FIG. 3 is a vertical sectional side view with a part of the disk device according to the present invention omitted.

FIG. 4 is a plan view showing the internal structure of a disk device according to the present invention.

FIG. 5 is an enlarged plan view of a disc insertion opening side of the disc device according to the present invention.

FIG. 6 is an enlarged plan view of the drive unit side of the disk device according to the present invention.

FIG. 7 is a perspective view showing a disc carrying mechanism and a chucking mechanism of the disc device according to the present invention.

8 is a rear side perspective view of the portion shown in FIG. 7. FIG.

FIG. 9 is a side view showing a state before the operation of the disc carrying mechanism of the disc device according to the present invention is started.

FIG. 10 is a side view showing a state where the disc transport mechanism of the disc device according to the present invention is in the middle of operation.

FIG. 11 is a side view showing an operation completed state of the disc carrying mechanism of the disc device according to the present invention.

[Explanation of symbols]

1 Case 2 Disc Storage Unit 3 Disc Transport Mechanism 4 Disc Playback Mechanism 5 Opening 5a Inner Lower Surface 5a ₁ Circular Curved Inner Edge 6 Front Door 7 Rotary Table 15 Disc Storage 22 Operation Port 31 Lock Plate 32 Lock Recess 33 Stopper Pin 40 Base plate 41 Stand plate 42 Arm bracket 43 Chucking plate 50 Cylindrical cam 58 Cam bracket 58a Fixed bracket 58b Support bracket 58c Adjustment mechanism 65 Rotating shaft 66 First arm 68 Second arm 69 Adjustment mechanism 75 First L Shaped link 77 Second L-shaped link 78 Upper cam pin 79 Lower cam pin 81 Slide lever 84 Swing lever 85 Rotating shaft 86 Support plate 86a Elongated hole 87 Adjustment operator 90 Optical pickup 91 Frame plate 97 disc table 103 disc cover 103a upper surface portions 103b and 103c side surface portions 103b ₁ and 103c ₁ arcuate curved inner edge portion 105 protrusion prevention frame D optical disc

Claims (4)

[Claims] 1. A storage unit is provided that is rotatably supported about a support shaft, has a main surface formed in a substantially mountain shape, and holds a plurality of disk-shaped recording media radially around the support shaft. A disc-shaped recording medium storage unit and one disc-shaped recording medium selected from a large number of disc-shaped recording media stored and held in the storage unit are mounted, and an information signal is recorded or recorded on the disc-shaped recording medium. A recording and / or reproducing mechanism for reproducing the recorded information signal, and a recording and / or reproducing mechanism for the disk-shaped recording medium housed and held in any one of the housings provided in the disk-shaped recording medium housing unit. A disk device comprising a transport mechanism for feeding and returning to and from the disk-shaped recording medium storage unit in a housing containing the disk device. An opening for inserting and removing the disc-shaped recording medium is provided on the front side, and an arcuate curved edge along the peripheral surface of the disc-shaped recording medium storage unit is formed on the inner lower surface of the opening, and both inner side surfaces are An arcuate curved edge portion is formed along the outer peripheral edge of the disk-shaped recording medium housed and held in the disk-shaped recording medium housing unit, and an inner upper surface is formed with a covering surface that covers the upper peripheral edge side of the disk-shaped recording medium. A disk device characterized by being. 2. A cover is provided inside the opening, and covers the upper peripheral surface side of the disk-shaped recording medium corresponding to above the portion of the disk-shaped recording medium housing unit facing the opening. 2. An arcuate curved edge along the outer peripheral edge of the disk-shaped recording medium is formed on both side surfaces of the cover.
The disk device according to item 1. 3. The disk-shaped recording medium storage unit is located above the disk-shaped recording medium storage unit over substantially the entire circumference thereof, and corresponds to the upper peripheral portion of the disk-shaped recording medium stored and held in the disk-shaped recording medium storage unit with a required space. The disk device according to claim 1, further comprising a pop-out prevention frame. 4. The disk device according to claim 2, wherein the pop-out prevention frame is continuously provided on the cover, and a gap portion is formed at a take-out portion of the disk-shaped recording medium.