JP2006107729A - Disk automatic selecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely load and unload one disk using a disk carrying means between a rotary table and a disk driving section, by selecting the one disk from a plurality of disks almost erectly placed in a plurality of slits for disk mounting formed in the freely rotable table. <P>SOLUTION: This disk carrying means is provided with a first arm 12 rotatably provided at the side of the one disk D which moved to an eject position on the rotary table 4, a second arm 13 rotatably provided so as to enter from beneath into a slit 4d for disk mounting, which is loaded with the one disk D which moved to the eject position on the rotary table 4, and a third arm 14 rotatably provided above the one disk which moved to the eject position on the rotary table 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention selects one disk from a plurality of disks that are substantially upright and placed on a rotatable rotary table at a narrow pitch, and transports the one disk between the rotary table and the disk drive unit. The present invention relates to an automatic disk selection device that can be reliably loaded and unloaded by means.

  Although an automatic disk selection device for selecting one (desired) disk from a large number of disks has various forms, JP-A-9-82007 stores a large number (100) of disks on a rotary table. A disc device is disclosed.

  20A and 20B are diagrams for explaining a conventional disk device. FIG. 20A shows an initial state of the device, FIG. 20B shows a state in which a disk is loaded from a rotary table to a disk reproducing mechanism, and FIG. It is the figure which showed the state which mounted | wore the disk table of the disk reproduction | regeneration mechanism with the disk.

  The conventional disk device 100 shown in FIG. 20 is described in the above-mentioned Japanese Patent Application Laid-Open No. 9-82007. Here, the disk conveying means in the disk device 100 will be mainly described briefly.

  As shown in FIG. 20A, in the conventional disk device 100, a rotary table 103 is rotatably provided around a support shaft 102 fixed to the casing 101, and the rotary table 103 is arranged along the circumference. A large number (100) of disks D are placed upright in a large number of disk storage sections 103a having slit-shaped openings formed radially, and one disk D selected by inputting a disk number (hereinafter referred to as a disk number). The desired disk D is moved from the standby position to the take-out position by the rotation of the rotary table 103, and the desired disk D is mounted on the disk table 111 of the disk reproducing mechanism 110 by the disk transport means.

  Here, as the disk transport means, the first arm 104 is provided so as to be rotatable about the rotation shaft 106 facing the slit-like opening of the disk storage portion 103a that has reached the take-out position on the rotary table 103. . Further, the second arm 105 is provided on the left side of the desired disk D that has reached the take-out position on the rotary table 103 so as to be rotatable about the rotation shaft 106. Further, a disc guide 107 is provided so as to be movable up and down above the disc reproducing mechanism 110 provided on the left side of the rotary table 103 and above the desired disc D reaching the take-out position on the rotary table 103.

  The first and second arms 104 and 105 are retracted from the outer periphery of the desired disk D before the desired disk D that has reached the take-out position on the rotary table 103 is taken out. On the other hand, the disk guide 107 is located at a position close to the upper outer periphery of the desired disk D. In the embodiment of the present invention described later, a first arm corresponding to the second arm 105 is provided on the side of the rotary table, and a second arm 12 corresponding to the first arm 104 is mounted on the disk of the rotary table. It faces the slit for installation.

  Next, as shown in FIG. 20B, when loading the desired disk D that has reached the take-out position on the rotary table 103 onto the disk table 111 of the disk reproducing mechanism 110, the first arm 104 is rotated. The first arm 104 is rotated counterclockwise around the center 106 to enter the slit-like opening of the disk storage portion 103a, and the first conveying claw 104a formed on the first arm 104 is used to make a desired movement. The lower part of the outer periphery of the disk D is lifted, and the second arm 105 is rotated clockwise about the rotation shaft 106, and a desired disk is formed by the second conveying claw 105 a formed on the second arm 105. Grasp the left side of the outer periphery of D, and then dispose the first and second arms 104 and 105 while holding the desired disk D between the first and second arms 104 and 105. By turning the play mechanism 110 side, the outer peripheral upper portion of the desired disc D is guided by the disk guide 107, and loading the desired disc D on the disc table 111.

Next, as shown in FIG. 20C, after the desired disk D is mounted on the disk table 111, the first and second arms 104 and 105 and the disk guide 107 are retracted from the outer periphery of the desired disk D. I am letting.
Japanese Patent Laid-Open No. 9-82007

  In the conventional disk device 100 described above, a large number (100) of disks D can be placed on the rotary table 103, and a desired disk D selected from the large number of disks D is stored in the disk table of the disk reproducing mechanism 110. Although it can be automatically loaded onto the rotary table 111, there is a demand on the market that a larger number (about 200) of disks D can be placed on the rotary table 103.

  In this case, in order to place a large number (200) of disks D on the rotary table 103 in the disk storage portion 103a having slit-shaped openings without increasing the outer diameter of the rotary table 103, the rotary table 103 is used. The interval (pitch) between the adjacent disk storage portions 103a must be reduced.

  At this time, since the disk storage portion 103 a is formed radially on the rotary table 103, the first arm 104 entering the disk storage portion 103 a is positioned closer to the outer peripheral portion of the rotary table 103. It is necessary to make the width dimension narrower than the arm 105.

  That is, when the interval between the adjacent disk storage portions 103a on the rotary table 103 is reduced, the outer peripheral portion of the desired disk D is reliably positioned by the disk storage portion 103a. Can enter the slit-like opening of the disc storage portion 103a and can grip the outer peripheral portion of the desired disc D with the first conveying claw 104a of the first arm 104, but the desired one mounted on the disc table 111 can be When unloading the disk D to the rotary table 103, the outer periphery of the desired disk D mounted on the disk table 111 is not positioned reliably. Therefore, if the desired disk D is warped, it is formed narrower. Grasping the outer periphery of the desired disk D with the first conveying claw 104a of the first arm 104 If it can not occur. At this time, the operation of unloading the desired disk D from the disk reproduction mechanism 110 to the rotary table 103 is not described in contrast to the operation of loading the desired disk D from the rotary table 103 to the disk reproduction mechanism 110. If it is considered that the unloading operation is the reverse of the loading operation, the unloading operation of the desired disk D becomes uneasy for the above reason. Therefore, when a large number (200) of disks D are placed on the rotary table 103, there is a problem in reliability if the conventional disk transport means is inserted as it is.

  Further, in the conventional disk apparatus 100 described above, as described in paragraph 0063 of the above publication, a 12 cm diameter CD (compact disk) is placed on the rotary table 103, but an 8 cm diameter CD ( An adapter is required when a compact disc is placed. Therefore, in order to mount 12 cm CD and 8 cm CD having different disk diameters on the rotary table 103, a large number of adapters must be prepared, and the apparatus 100 is not easy to use. Further, even when 200 cm of 12 cm CD and 8 cm CD can be stored together, there is a problem in reliability if the conventional disk transport means is inserted as it is.

  Therefore, even when a large number (200) of discs are placed on the rotary table with the disc storage interval narrowed, a disc transport means that can reliably load and unload discs between the rotary table and the disc drive unit is desired. It is rare. Further, there is provided a disk transport means capable of reliably loading and unloading a disk between the rotary table and the disk drive unit even when 12 cm CD and 8 cm CD having different disk diameters are mounted on the rotary table without using an adapter. It is desired.

  The present invention has been made in view of the above problems, and is provided with a plurality of discs that are provided with a rotary table in a casing so as to be rotatable, and are radially formed at substantially equal intervals along the circumference of the rotary table. A plurality of discs are placed upright in the slit, and one disc selected from the plurality of discs is moved from the standby position to the take-out position by rotation of the rotary table, and the one disc In an automatic disk selection apparatus for loading a disk drive unit turntable provided on a side of the take-out position by conveying a disk conveying means, a disk replacement opening is provided on the front surface of the housing, and the opening A lift arm is placed on the chassis base serving as a disk replacement position near the inside of the rotary table. And vertically movable facing the door from below, a disc automatic selection device characterized by lifting the disk specified during disk exchange above said disk mounting slits in the lift arm.

  According to the disk automatic selection device according to the present invention described in detail above, a single disk is selected from a plurality of disks mounted substantially upright on a plurality of disk mounting slits formed on a rotatable rotary table, In the automatic disk selection apparatus for loading and unloading the single disk between the rotary table and the disk drive unit by the disk transport means, the disk transport means is located on the side of the one disk that has reached the take-out position on the rotary table. And a second arm rotatably provided so as to enter from a lower side into a disk mounting slit on which one disk reaching the take-out position on the rotary table is mounted. And a third arm that is pivotably provided above one disk that has reached the take-out position on the rotary table. With this, it is possible to narrow the interval between adjacent disk mounting slits on the rotary table, and accordingly, a large number (200 sheets) of disks can be mounted on the rotary table, One disk can be reliably loaded and unloaded by the first to third arms between the rotary table and the disk drive unit.

  At this time, one disk is loaded from the rotary table onto the turntable of the disk drive unit using the first and second arms, while one disk is loaded onto the turntable of the disk drive unit using the first to third arms. Therefore, the width of the concave groove portion of the third arm can be made wider than the width of the concave groove portion of the second arm.

  Furthermore, since a plurality of types of discs having different disc diameters can be placed together in a plurality of disc placement slits formed on the rotary table without using an adapter, the apparatus can be used conveniently.

  Hereinafter, an embodiment of an automatic disk selection apparatus according to the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a perspective view for explaining an automatic disk selection apparatus according to the present invention. FIG. 2 shows first and second light detection plates and first to third light sensors formed on the rotary table shown in FIG. 3 is an enlarged plan view, FIG. 3 is a diagram showing output waveforms of the first to third optical sensors shown in FIG. 2, and FIG. 4 is an enlarged view showing the vicinity of the take-out position of the rotary table shown in FIG. FIGS. 5A and 5B are a top view and a front view for explaining the disk clamping mechanism of the disk automatic selection apparatus according to the present invention.

  In the disk automatic selection apparatus 1 according to the present invention shown in FIG. 1, a central shaft 3 is fixedly installed on a chassis base 2 serving as a base, and a large-diameter rotary table 4 serving as a disk storage portion is mounted on the central shaft 3. The rotary table 4 is provided so as to be rotatable clockwise and counterclockwise about the central axis 3 by fitting the central hole 4a. At this time, the diameter of the rotary table 4 is about 340 mm.

  In addition, the rotary table 4 has a plurality of disk mounting slits 4d formed radially from the upper surface 4b side to the lower surface 4c side at substantially equal intervals along the circumference and toward the outer peripheral portion 4e. Yes. At this time, the plurality of disk mounting slits 4d are formed so as to reduce the interval (pitch) between the adjacent disk mounting slits 4d without increasing the outer diameter of the rotary table 4 so much. It is formed radially so that the disk D can be placed thereon. Further, as shown in an enlarged view in FIG. 4, a 12 cm diameter CD (compact disc) or an 8 cm diameter CD (compact disc) can be mixed and placed in the plurality of disc placement slits 4 d. Further, the plurality of disk mounting slits 4d are closed in a circular arc shape at both ends of a central opening into which a second arm 13 to be described later enters, and an outer peripheral portion of 12 cm CD or 8 cm CD is reliably positioned at the circular arc portion. The disks D are placed at substantially equal intervals along the circumference and in a substantially upright state radially toward the outer peripheral portion 4e of the rotary table.

  A disk number is displayed along the outer peripheral portion 4e of the rotary table 4, and a gear portion 4f is formed along the circumference below the outer peripheral portion 4e. The spur gear 5 is provided on the gear portion 4f. The small tooth portion 5a is always meshed, and the large tooth portion 5b integrated with the small tooth portion 5a is connected to the motor 7 via a speed reduction mechanism portion 6 including a gear train (not shown).

  Further, on the lower surface 4c side of the rotary table 4 and on the inner peripheral side of the disk mounting slit 4d, first and second light detection plates 4g and 4h are coaxially with the central shaft 3 and are integrally formed downward in a ring shape. Is formed.

  The first light detection plate 4g is formed on the outer peripheral side than the second light detection plate 4h formed on the inner peripheral side, and as shown in FIG. Corresponding to the number of mounting slits 4d, a plurality of concave and convex portions 4g1 and 4g2 are sequentially and repeatedly formed at equal intervals along the ring-shaped circumference. On the other hand, as shown in FIG. 2, the second light detection plate 4h has a pair of concave and convex portions 4h1 and 4h2 formed in an angular range divided by a predetermined angle (30 °) along the ring-shaped circumference. Each of the pair of concavo-convex portions 4h1 and 4h2 is formed as shown in the drawing with different lengths in the order of division.

  Further, one disk D selected by inputting a disk number from among a large number of disks D placed on the rotary table 4 (hereinafter referred to as a desired disk D) is taken out to the disk drive unit 20 described later. In the vicinity of the take-out position, the first and second photosensors 8 and 9 are placed on the chassis base 2 so as to be opposed to the first photodetecting plate 4g formed on the rotary table 4 and slightly shifted in position. A third photosensor 10 is installed facing the second photodetection plate 4h formed on the table 4.

  Then, as shown in FIGS. 3A to 3C, when the rotary table 4 is rotated, the output of the first optical sensor 8 is equally spaced corresponding to the number of disk mounting slits 4d. A function of calculating the relative positional relationship between the standby position where the desired disk D is output and the take-out position where the desired disk D is taken out is provided. Further, the output of the second optical sensor 9 is output with a phase shift of approximately 90 ° with respect to the output of the first optical sensor 8 and has a function of pulling in the desired disk D so as to be surely stopped at the removal position. . Further, the output of the third optical sensor 10 has a function of indicating the absolute addresses of a large number of discs D in combination with the output of the first optical sensor 8 described above.

  Next, a disc guide 11 is provided toward the disc drive unit 20 at the desired position for taking out the disc D above the rotary table 4, and the lower end of the disc guide 11 is fixed on the chassis base 2. It is attached to the central shaft 3 and the upper end is attached to the loading base 15. The disk guide 11 guides the disk D that has reached the take-out position on the rotary table 4.

  Further, in the vicinity of a desired disk D take-out position, first to third arms 12 to 14 serving as disk transport means for taking out the desired disk D to a disk drive unit 20 described later are vertically provided on the chassis base 2. The load base 15 is rotatably provided. At this time, the first and third arms 12 and 14 are respectively supported by rotating shafts 16 and 18 fixed to the loading base 15. On the other hand, the second arm 13 is supported on a rotating shaft 17 on a slide plate 19 provided on the loading base 15 so as to be slidable in the radial direction of the rotary table 4. The first and second arms 12 and 13 are connected to a cam mechanism (not shown) via a link, while the third arm 14 is a rotation base base 25 that rotates a disk drive unit 20 described later. (FIG. 5) and a clutch mechanism (not shown) using a rod.

  That is, as shown in an enlarged view in FIG. 4, the first arm 12 is provided on the right side of the desired disk D that has reached the take-out position on the rotary table 4 so as to be rotatable via the rotation shaft 16. The right outer peripheral portion of the desired disk D that has reached the take-out position is supported.

  Further, the second arm 13 has a rotating shaft 17 on the slide plate 19 so that the second arm 13 can enter the disk mounting slit 4d on which the desired disk D reaching the take-out position on the rotary table 4 is mounted. The lower part of the outer periphery of the desired disk D is lifted up.

  Further, the third arm 14 is provided so as to be pivotable via a pivot shaft 18 above the desired disk D reaching the take-out position on the rotary table 4 and supports the upper outer periphery of the desired disk D. It is like that. The third arm 14 is retracted from the upper part of the outer periphery of the desired disk D when the clutch is turned on by a clutch mechanism (not shown). On the other hand, the third arm 14 drops by gravity when the clutch is turned off.

  Here, as will be described later, when the desired disk D is loaded from the rotary table 4 to the disk drive unit 20 by the second arm 13, the rotary shaft 17 of the second arm 13 is moved by the slide plate 19. On the other hand, while the desired disk D is unloaded from the disk drive unit 20 to the rotary table 4 by the second arm 13, the rotating shaft 17 of the second arm 13 is moved by the slide plate 19. By sliding the rotary table 4 in the outer peripheral direction, the length of the second arm 13 can be set short.

  The first to third arms 12 to 14 are respectively formed with concave groove portions 12a to 14a for gripping the outer peripheral portion of the desired disk D. In addition, two rollers 12a1 which are in contact with the outer peripheral portion of the desired disk D are mounted in the concave groove portion 12a of the first arm 12, and a cam (not shown) is retracted to the second arm 13 during retraction in an operation described later. A protrusion 13b that abuts the mechanism is formed. At this time, as described above, in order to place a large number (200) of disks D in the disk mounting slit 4d, the interval between the adjacent disk mounting slits 4d on the rotary table 4 is reduced. Accordingly, the widths B1 and B2 of the concave grooves 12a and 13a of the first and second arms 12 and 13 are formed narrow so as not to interfere with the disk D adjacent to the desired disk D on the rotary table 4. ing. On the other hand, the width B3 of the concave groove portion 14a of the third arm 14 formed in a portion that does not interfere with the disk D adjacent to the desired disk D on the rotary table 4 is wide. At this time, the widths B1 to B3 of the concave groove portions 12a to 14a of the first to third arms 12 to 14 are set to a relationship of B3> B1 ≧ B2, and the groove widths b1 to b3 of the concave groove portions 12a to 14a are also set. The relationship of b3> b1 ≧ b2 is set with respect to the thickness of the disk D. In the case of B1> B2, b1> b2, when the first and second arms 12 and 13 are in contact with the radially mounted disc D, they are in contact with the outer peripheral side of the rotary table 4 or the rotary table 4 This is due to the difference in the diameter of contact on the inner peripheral side.

  As will be described later, when loading a desired disk D from the rotary table 4 onto the turntable 22 of the disk drive unit 20, the first and second arms 12 and 13 are rotated, while the disk D is turned on the turntable 22. The first to third arms 12 to 14 are rotated when unloading from the rotary table 4 to the rotary table 4. At this time, it is detected whether the diameter of the disk D is 12 cm or 8 cm at the rotation angle until the first arm 12 abuts on the outer right side of the disk D during loading. The operation of the first arm 12 is determined based on the cam mechanism not to be operated, and the first to third arms 12 to 14 are rotated at a predetermined angle according to the diameter of the disk D at a predetermined timing.

  Next, as shown in an enlarged view in FIG. 4, a disk drive unit 20 is provided to the right of the desired disk D removal position. Here, a traverse base 21 serving as a base of the disk drive unit 20 stands upright with respect to the chassis base 2 and is provided substantially in parallel with a desired disk D placed on the rotary table 4. A motor 23 to which the turntable 22 is fixed is attached to the traverse base 21 at a right angle to the traverse base 21. Accordingly, the disk D is rotatably supported on the turntable 22 in a substantially vertical posture. Further, an optical pickup 24 is provided on the side of the turntable 22 so as to be able to reciprocate in the radial direction of the disk D. At this time, the disk drive unit 20 can be rotated by the rotation base base 25 (FIG. 5) in the direction perpendicular to the paper surface, in other words, the axial direction of the turntable 22. Is configured so that the chucking boss 22a of the turntable 22 advances and retreats with respect to the center hole H of the disk D when facing the turntable 22.

  Next, as shown in FIGS. 5A and 5B, the disk clamp mechanism 30 is attached to the loading base 15 so as to face the turntable 22 of the disk drive unit 20.

  The disc clamp mechanism 30 includes a clamper holding member (hereinafter referred to as a clamper holding arm 31), a disc clamper 34 suspended in a loosely fitted state on the clamper holding arm 31, and a disc clamper 34 in the direction of gravity. It is schematically configured with a regulating member 35 that regulates movement.

  That is, the clamper holding arm 31 is provided on the right side surface side of the loading base 15 so as to be rotatable about the rotation shaft 33 while being urged toward the turntable 22 by the torsion spring 32. Here, one end of the clamper holding arm 31 extends to the turntable 22 side, and the disc clamper 34 is suspended in a round fit 31a drilled on one end side of the clamper holding arm 31 in a loosely fitted state. .

  The disk clamper 34 is provided on the turntable 22 side with a first flange portion 34a having a diameter larger than the diameter of the round hole 31a and a diameter smaller than the diameter of the round hole 31a so that the inside of the round hole 31a can be loosely fitted. The small-diameter boss portion 34b and a second flange portion 34c that is formed to have a diameter larger than the diameter of the round hole 31a and are retrofitted so as to prevent removal from the inside of the round hole 31a. The disc clamper 34 is provided so as to be able to contact and separate from the turntable 22 by rotating the clamper holding arm 31 clockwise or counterclockwise while facing the turntable 22.

  The clamper holding arm 31 supports a restricting member 35 for restricting the movement of the disc clamper 34 in the gravity direction so as to be rotatable about a rotating shaft 37 while being biased by a spring 36. Before the disk D is chucked to the turntable 22 in a substantially vertical posture, the restricting member 35 is rotated clockwise around the rotation shaft 37 by the bias of the spring 36, and the disk clamper 34 In a state where the center and the center of the turntable 22 are substantially aligned with each other by the positioning piece 31 b of the clamper holding arm 31, the stepped support portion 35 a provided on one end side of the restricting member 35 is the second of the disc clamper 34. By abutting on the flange portion 34c from below, the disc clamper 34 suspended in a loosely fitted state in the round hole 31a of the clamper holding arm 31 is restricted from moving in the gravity direction in the round hole 31a by its own weight.

  On the other hand, as will be described later, when the disk D is chucked on the turntable 22 in a substantially vertical posture, the convex portion 12b formed on the first arm 12 is formed on the regulating member 35 against the urging force of the spring 36. The restricting member 35 is retracted from the disk clamper 34 by contacting the projecting piece 35b.

  Next, the overall operation of the disk automatic selection apparatus 1 having the above configuration will be described with reference to FIGS.

  6 to 11 are diagrams showing the operation of loading a disk from a rotary table to a turntable. (A) shows a case of 12 cm CD, (B) shows a case of 8 cm CD, and FIG. ), (B) are a front view, a side view, and FIGS. 13 (A), (B) showing a state before the disk is chucked to the turntable in the disk clamping mechanism of the disk automatic selection apparatus according to the present invention. FIG. 14 is a front view and a side view showing a state in which the disc is chucked on the turntable in the disc clamping mechanism of the automatic disc selection apparatus according to the present invention, and FIGS. 14 to 19 show unloading of the disc from the turntable to the rotary table. (A) shows the case of 12 cm CD, and (B) shows the case of 8 cm CD. It is.

  FIGS. 6 to 11 and FIGS. 14 to 19 show the case of 12 cm CD and the case of 8 cm CD, respectively. The basic operation of the first to third arms 12 to 14 is the disk diameter. The operation timing and the rotation angle of the first to third arms 12 to 14 are slightly different depending on the disk diameter, but in the following description, the cases of 12 cm CD and 8 cm CD will be described together.

  First, as shown in FIGS. 6A and 6B, the rotary table 4 is rotated, and a desired disk D selected from a large number of disks D placed on the rotary table 4 is moved from the standby position. Move to the extraction position. In this state, the desired disk D is placed in a substantially upright state in the disk placement slit 4 d of the rotary table 4, and the first to third arms 12 to 14 are placed on the outer periphery of the desired disk D. Evacuated from. Further, the rotation shaft 17 of the second arm 13 reaches a position approaching the rotation shaft 16 of the first arm 12 by the rightward movement of the slide plate 19 (FIG. 4). Thereafter, the operation of loading the disk D from the rotary table 4 side to the turntable 22 side mainly uses the first and second arms 12 and 13.

  That is, as shown in FIGS. 7A and 7B, the first arm 12 is rotated counterclockwise about the rotation shaft 16 and the second arm 13 is rotated about the rotation shaft 17. Turn clockwise. Here, the first arm 12 is made to face the desired disk D slightly earlier than the second arm 13, and the first arm 12 is brought into contact with the outer peripheral right side portion of the disk D. Further, the rotation shaft 17 of the second arm 13 starts to move to the left so as to go to the inner peripheral side of the rotary table 4 via the slide plate 19 (FIG. 4).

  Next, as shown in FIGS. 8A and 8B, the second arm 13 enters the disk placement slit 4d of the rotary table 4 from below and lifts the lower outer periphery of the desired disk D. Then, the disk D is detached from the disk mounting slit 4d, and the disk D is sandwiched between the second arm 13 and the first arm 12 in contact with the outer peripheral right side of the disk D. Here, when the diameter of the disk D is 12 cm, the outer peripheral upper part of the disk D lifted by the second arm 13 is guided by the third arm 14 retracted upward, but the diameter of the disk D is 8 cm. In this case, the disk D cannot be waited until it is guided by the third arm 14, but there is no problem. Then, while maintaining the state in which the desired disk D is sandwiched between the first and second arms 12 and 13, the rotation direction of the first arm 12 is reversed to rotate clockwise about the rotation shaft 16. Further, the second arm 13 is continuously rotated in the clockwise direction while moving the rotation shaft 17 of the second arm 13 to the left via the slide plate 19 (FIG. 4), and the disk D is driven by the disk. The unit 20 is moved to the turntable 22 side.

  Next, as shown in FIGS. 9A and 9B, the first and second arms 12 and 13 are held while the desired disk D is held between the first and second arms 12 and 13, respectively. When the disk is further rotated clockwise, the disk D approaches the turntable 22 side. Further, the rotation shaft 17 of the second arm 13 further moves to the left via the slide plate 19 (FIG. 4).

  Next, as shown in FIGS. 10A and 10B, the first and second arms 12 and 13 are held while the desired disk D is sandwiched between the first and second arms 12 and 13, respectively. Further, the center shaft H of the disc D is moved to the left side through the slide plate 19 (FIG. 4) so that the center hole H of the disc D is turned to the turntable 22. When the disk drive unit 20 is rotated forward in the direction perpendicular to the paper surface and the chucking boss 22a of the turntable 22 enters the center hole H of the disk D, the desired disk D enters the turntable 22. It is supported in a substantially vertical posture.

  Thereafter, the disk clamp mechanism 30 (FIG. 5), which will be described later, operates. At this time, the desired disk D is chucked on the turntable 22 as shown in FIGS. Sometimes, the first and second arms 12 and 13 are retracted from the outer periphery of the disk D. That is, the first arm 12 is further rotated clockwise to retract from the outer periphery of the disk D, and the rotation of the first arm 12 causes the regulating member 35 (FIG. 5) of the disk clamp mechanism 30 to be interlocked. ing. On the other hand, the movement of the second arm 13 to the left of the rotation shaft 17 is stopped, and the second arm 13 is retracted in the disk mounting slit 4d of the rotary table 4 by reversing the rotation direction. Yes. At this time, the second arm 13 is retracted by reversing by pushing the projection 13b with a cam mechanism (not shown).

  Next, as shown in FIGS. 12A and 12B, a circle formed on one end side of the clamper holding arm 31 in a state before the desired disk D is chucked to the turntable 22 in a substantially vertical posture. A disc clamper 34 suspended in a loosely fitted state in the hole 31 a is spaced from the turntable 22 while facing the turntable 22.

  Further, the restricting member 35 rotatably supported by the clamper holding arm 31 is rotated clockwise around the rotation shaft 37 by the bias of the spring 36, and the center of the disk clamper 34 and the turntable 22 are rotated. A stepped support 35a provided on one end side of the restricting member 35 is positioned on the second flange portion 34c of the disc clamper 34 from below while being positioned by the positioning piece 31b of the clamper holding arm 31 so as to substantially coincide with the center. By contact, the disc clamper 34 is restricted from moving in the direction of gravity in the round hole 31a by its own weight. Thus, before chucking the disk D, the center of the disk clamper 34, the center hole H of the disk D loaded on the turntable 22 side, and the center of the turntable 22 are substantially coincident. At this time, the convex portion 12 b formed on the first arm 12 is separated without contacting the protruding piece 35 b formed on the regulating member 35.

  Then, the disk drive unit 20 is rotated by the rotation base base 25 (FIG. 5) so that the chucking boss 22a of the turntable 22 enters the center hole H of the disk D, and the clamper holding arm 31 is moved to the turntable. The disc clamper 34 is moved closer to the turntable 22 by rotating to the 22 side.

  Next, as shown in FIGS. 13A and 13B, after the center hole H of the desired disk D is fitted into the chucking boss 22a of the turntable 22, the disk clamper 34 is moved to the disk D. Thus, the desired disk D is reliably chucked on the turntable 22 in a substantially vertical posture. Thereafter, when the first arm 12 is retreated from the outer peripheral portion of the disk D, the convex portion 12b formed on the first arm 12 comes into contact with the protruding piece 35b formed on the regulating member 35. Is rotated counterclockwise about the rotation shaft 37 against the spring 36, and a stepped support portion 35 a provided on one end side of the regulating member 35 is located below the second flange portion 34 c of the disc clamper 34. evacuate. In a state where the desired disk D is chucked on the turntable 22 by the disk clamper 34, the magnet 22b fixed in the central recess of the chucking boss 22a of the turntable 22 and the central protrusion of the disk clamper 34 Since the magnetic plates 34da fixed to each other attract each other, the disc clamper 34 loosely fitted in the round hole 34a of the clamper holding arm 31 is integrated with the turntable 22 via the disc D supported in a substantially vertical posture. Can rotate.

  Next, when the drive of the desired disk D is completed, as shown in FIGS. 14A and 14B, the first to third arms 12 to 14 are chucked on the turntable 22 of the disk D. Retracted from the outer periphery. Thereafter, the operation of unloading the desired disk D from the turntable 22 side to the rotary table 4 side is not the reverse operation of the loading operation described above, and here, the first to third arms 12 to 14 are used. .

  That is, as shown in FIGS. 15A and 15B, the first arm 12 is rotated while the desired disk D is chucked in a posture substantially perpendicular to the turntable 22 by the disk clamper 34. The first arm 12 is brought into contact with the outer peripheral right side of the disk D by rotating counterclockwise about the shaft 16, and the clutch mechanism (not shown) of the third arm 14 is turned off to drop the gravity. The third arm 14 is pivoted counterclockwise about the pivot shaft 18 to bring the third arm 14 into contact with the upper left corner of the outer periphery of the disk D, and the first arm 12 and the third arm 14 After that, the turntable 22 and the disc clamper 34 are returned to their original initial state. As the first arm 12 rotates counterclockwise, the restricting member 35 comes into contact with the disk clamper 34 again as described with reference to FIG. At this time, since the concave groove portion 14a formed in the third arm 14 is formed to have a wide width, when the third arm 14 faces the disk D, the upper left outer periphery of the disk D is surely placed in the concave groove portion 14a. Can enter. Further, here, the second arm 13 only needs to be retracted into the disk mounting slit 4d of the rotary table 4, but the forward and return paths are partially shared by a cam mechanism (not shown). Is rotated clockwise about the rotation shaft 17 while moving rightward so as to go to the outer peripheral side of the rotary table 4 via the slide plate 19 (FIG. 4), and approaches the lower left of the outer periphery of the disk D. And does not contact the disk D.

  Next, as shown in FIGS. 16A and 16B, the first arm 12 is further rotated counterclockwise with the first arm 12 kept in contact with the outer peripheral right side portion of the disk D, and the first arm 12 rotates the disk. D is lifted slightly upward, the third arm 14 is kept in contact with the upper left part of the outer periphery of the disk D, the rotation direction is reversed clockwise, and the disk D is sandwiched between the first arm 12 and the third arm 14 In this state, the disk D is moved to the rotary table 4 side. Further, the second arm 13 reverses the rotation direction counterclockwise while the rotation shaft 17 moves further to the right via the slide plate 19 (FIG. 4), and thereby the disk mounting slit of the rotary table 4. Although it is moved within 4d, it does not come into contact with the disk D here either.

  Next, as shown in FIGS. 17A and 17B, the first arm 12 is further rotated counterclockwise while keeping the first arm 12 in contact with the right side of the outer periphery of the disk D. The lower right is in contact with the second arm 13 moved into the disk mounting slit 4d. Here, the rotation of the third arm 14 is stopped, and in the case of 12 cm CD, the third arm 14 guides the upper outer periphery of the disk D, while in the case of 8 cm CD, the third arm 14 has an upper outer periphery of the disk D. Does not touch.

  Next, as shown in FIGS. 18A and 18B, the first arm 12 is further rotated counterclockwise while being in contact with the outer peripheral right side of the disk D, and the outer periphery of the disk D is When the second arm 13 supporting the lower right is further rotated counterclockwise and moved below the disk mounting slit 4d, the desired disk D is mounted again in the disk mounting slit 4d. . Here, since the desired disk D is lowered downward, the upper peripheral portion of the disk D is separated from the third arm 14. Further, the rightward movement of the rotation shaft 17 of the second arm 13 stops.

  Next, as shown in FIGS. 19A and 19B, when the desired disk D is completely placed in the disk placement slit 4d, the first and second arms 12 and 13 are moved to the desired disk. When retracted from the outer periphery of D, the disk automatic selection device 1 returns to the original initial state.

It is a perspective view for demonstrating the disk automatic selection apparatus based on this invention. It is the top view which expanded and showed the 1st, 2nd photon detection board formed in the rotary table shown in FIG. 1, and the 1st-3rd photosensor. It is the figure which showed the output waveform of the 1st-3rd optical sensor shown in FIG. It is the front view which expanded and showed the take-out position vicinity of the rotary table shown in FIG. It is a figure for demonstrating the disc clamp mechanism of the disc automatic selection apparatus based on this invention. It is the figure which showed the operation | movement which loads a disc from a rotary table to a turntable. It is the figure which showed the operation | movement which loads a disc from a rotary table to a turntable. It is the figure which showed the operation | movement which loads a disc from a rotary table to a turntable. It is the figure which showed the operation | movement which loads a disc from a rotary table to a turntable. It is the figure which showed the operation | movement which loads a disc from a rotary table to a turntable. It is the figure which showed the operation | movement which loads a disc from a rotary table to a turntable. It is the figure which showed the state before chucking a disk to a turntable in the disk clamp mechanism of the disk automatic selection apparatus which concerns on this invention. It is the figure which showed the state which chucked the disk on the turntable in the disk clamp mechanism of the disk automatic selection apparatus concerning this invention. It is the figure which showed the operation | movement which unloads a disk from a turntable to a rotary table. It is the figure which showed the operation | movement which unloads a disk from a turntable to a rotary table. It is the figure which showed the operation | movement which unloads a disk from a turntable to a rotary table. It is the figure which showed the operation | movement which unloads a disk from a turntable to a rotary table. It is the figure which showed the operation | movement which unloads a disk from a turntable to a rotary table. It is the figure which showed the operation | movement which unloads a disk from a turntable to a rotary table. It is a figure for demonstrating the conventional disc apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Automatic disk selection apparatus, 4 ... Rotary table, 4d ... Disc mounting slit, 12-14 ... Disc conveyance means (1st-3rd arm), 12 ... 1st arm, 12a ... Concave groove part, 13 ... 1st 2 arms, 13a ... concave groove, 14 ... third arm, 14a ... concave groove, 20 ... disk drive, 22 ... turntable, D ... disk.

Claims (1)

  A plurality of discs are placed upright in a plurality of disc mounting slits formed radially at substantially equal intervals along the circumference on a rotatable rotary table, and selected from the plurality of discs The one disk is moved from the standby position to the take-out position by the rotation of the rotary table, and the one disk is moved between the rotary table and a disk drive unit provided on the side of the take-out position by a disk transport means. In the automatic disk selection apparatus for loading and unloading, the disk transport means includes a first arm rotatably provided on a side of the one disk that has reached the take-out position on the rotary table; In the disk mounting slit on which the one disk that has reached the take-out position is placed from below. A second arm rotatably provided so as to enter, and a third arm rotatably provided above the one disk reaching the take-out position on the rotary table. Automatic disk selection device.

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