JP2008041162A - Disk unit - Google Patents

Abstract

The center of a disk stored and held in an apparatus main body is aligned with the axis of a turntable so that the disk can be reliably delivered to the turntable.
A reproducing position correcting means and a cylindrical member 59 which is suspended from the top plate of the apparatus main body so as to pass through the center hole D-1 of the disk D which moves upward are provided. The front end portion 59a is formed to be tapered, and even if there is a slight misalignment in the center hole D-1 of the disk, it can be reliably engaged with the cylindrical member 59 to correct the center misalignment.
[Selection] Figure 11

Description

  The present invention relates to a disk device, and more particularly to a disk device that stores and holds a plurality of disks in a main body of the apparatus and places and reproduces a disk selected from the disk on a turntable.

  This type of disk device is provided with a turntable and a disk so as not to hinder the operation of inserting / removing the disk into / from the apparatus main body and the operation of selecting a desired disk from a plurality of disks stored and held. The disk reproducing means provided with a pickup for reading the information is rotatably supported at one end in the apparatus main body and retracted to a retracted position close to the side plate when not reproduced. At the time of reproduction, the disk moves from the retracted position to the reproduction position, the centering position is determined, and the held disk is moved to the turntable and placed.

  On the other hand, as shown in Patent Document 1, a tray that horizontally moves between a position where the disk transfer mechanism is pulled out from the apparatus main body and a position where the disk transfer mechanism is pulled into the apparatus main body, and a disk provided on the tray are provided with a disk. When the tray moves horizontally and the center hole of the disc placed on the disc holder comes to the position immediately before the turntable provided on the fixed side, the disc holder faces the turntable. There is a disc transport mechanism that descends and delivers the disc to the turntable and clamps the disc between the turntable and the clamper.

JP-A-11-213510

  Since the conventional disk device is configured as described above, for example, when a disk having a small outer diameter is inserted into the main body of the apparatus, or when the disk holding position is moved by vibration, the turntable remains displaced. There was a problem that the disc could not be placed on the turntable if it was placed above and there was a shift beyond the guiding protrusion of the turntable. Further, the disk transport mechanism disclosed in Patent Document 1 improves the accuracy of attaching and detaching to the turntable by increasing the position accuracy of the tray, but does not improve the position accuracy of the disk itself.

  The present invention has been made to solve the above-described problems. The center of the disk accommodated in the apparatus main body is aligned with the axis of the turntable, and the disk is reliably delivered to the turntable. The purpose is to be able to.

  In the disk device according to the present invention, a plurality of disks are stored and held in the apparatus body, and the selected disk and the disk above the selected disk are moved upward, and the disk below is moved downward. A disk holding means that divides into two parts vertically and one end of the disk holding means are rotatably supported in the main body of the apparatus. When not reproduced, the disk holding means is retracted to a retracted position close to the side plate. Provided on the bottom plate of the apparatus main body so as to correct the reproduction position of the disk reproducing means, and a disk reproducing means for entering between the moved disks and placing the selected disk on the turntable for reproduction A cylinder provided downward on the top plate of the apparatus main body so that the reproduction line correction means and the axis of the reproduction position correction means are aligned with each other so as to pass through the center hole of the disk moving upward. A wood, and is formed to Mari tapering tip of the cylindrical member.

  According to the present invention, since the tip end portion of the cylindrical member provided to be suspended from the top plate of the apparatus main body is tapered, the disk reproducing means is moved downward from the retracted position to the selected disk. When the selected disk and the disk above the selected disk are moved upward in order to enter between the disks, the center hole fits into the cylindrical member even if the axis of the disk is slightly deviated. Thus, the axis of the disc is corrected, and the disc can be reliably placed on the turntable moved to the reproduction position. At this time, all of the upwardly moving disks in which the center hole is fitted to the cylindrical member together with the selected disk can simultaneously correct the center deviation.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
First, the outline of the configuration of the first embodiment will be described with reference to the drawings. The disk device 1 includes a device main body 11 including a bottom plate 11a, left and right side plates 11b and 11c, a front plate 11d, and a rear plate 11e, and a top plate 11f that covers the upper surface of the device main body 11. In the apparatus main body, there are provided a disk reproducing means 2 for reproducing the disk D, a disk conveying means 3 for taking the disk D in and out of the apparatus main body, and a disk holding means 5 for storing and holding a plurality of disks D.
As shown in FIG. 2, the disk reproducing means 2 has a rotating base 8 whose one end is pivotally supported on a bottom plate 11a by a rotating shaft 12, and an oil damper (not shown) on the rotating base 8. The rotation base 8 is urged and assisted by a link mechanism (not shown) so as to rotate to the retracted position side.

  As shown in FIGS. 2 to 8, the disk holding means 5 includes a plurality of trays 51a to 51n formed in a crescent shape, and a plurality of column bodies 52a to 52a that are vertically moved while holding the trays at predetermined intervals. 52n and a large diameter rotatably attached to the top plate 11f so that gears 52a-1 attached to the upper ends of the respective pillars 52a to 52n (the gears of the pillars 52b and 52n are not shown) mesh with each other. The gear 58 includes guide columns 62a to 62n that are provided in parallel with the column bodies and provided between the bottom plate 11a and the top plate 11f of the apparatus main body 1. The trays 51a to 51n are provided with holding members 53a to 53n for holding the column bodies 52a to 52n at the outer peripheral tip and center, respectively. The holding members 53a to 53n receive the recesses 53a-1 to 53n-1 for holding the column bodies 52a to 52n, the holes 53a-2 to 53n-2 that pass through the guide columns 62a to 62n, and the periphery of the disk D. A receiving member 56 is formed, and pins 55a-1 to 55n-1 that engage with the spiral grooves 54a and 54b of the column are formed in the recesses 53a-1 to 53n-1. The receiving member 56 is provided with a spring member 57 that presses and supports the periphery of the disk D against the tray surface.

  The column bodies 52a to 52n are respectively provided with projections 52a-2, 52b-2, 52n-2 (projections on the top plate side are not shown) on the upper and lower end surfaces, holes 11f-1 on the top plate 11f, and holes on the bottom plate 11a. (Not shown) is supported so as to be rotatable. Spiral grooves 54a are formed in the upper and lower portions of the pillars 52a to 52n so that the trays 51a to 51n can be held at regular intervals, and a space for the disk reproducing means 2 to enter and exit is provided in the middle. Is formed between the selected disk D and the disk D moved downward, the spiral groove 54b connecting the upper and lower spiral grooves 54a by one rotation of the column body is formed. Further, the pressing member 63 is supported through the column body 52b and the guide columns 62a to 62n, is urged upward by the tension spring 64, receives the tray that engages with the lower spiral groove 54a, and always presses the tray upward. Engagement of the tray with the spiral groove 54b is ensured.

  The reproduction base 7 is provided with a turntable 4 on the upper surface of the tip thereof and an optical pickup 6 that moves in the radial direction of the disk D placed on the turntable 4 and reads a signal of the disk D. In addition, a lock plate 14 is attached to the rotation base 8, and a lock claw 14 a for locking the reproduction base 7 is provided at the tip thereof.

  The right side plate 11c, which is a component of the apparatus main body 1, is configured separately from the bottom plate in order to connect an FPC (Flexible Printed Circuit) drawn from the disk reproducing means 2 to a servo substrate attached to the back surface of the bottom plate 11a. Has been.

  The outline of the operation of the first embodiment will be described below with reference to the drawings. First, when a disk D desired to be reproduced is inserted into the apparatus main body 1 from the disk D loading / unloading port 11d-1 provided on the front plate 11d of the apparatus main body 1 shown in FIG. As shown in FIG. 2, the disk D is placed on one tray 51a in which a pin 55 engages with a spiral groove 54b in an intermediate portion of the pillars 52a to 52n (see FIG. 6). When the large-diameter gear 58 is driven in this state, the column bodies 52a to 52n are synchronously rotated through the small-diameter gear 52a-1 (only the one for the column body 52a is illustrated) meshing with the large-diameter gear 58. For this reason, the tray 51a rises to the top plate 11f side via the pins 55a-1, 55b-1, 55n-1 meshing with the spiral grooves 54b of the respective pillars 52a to 52n, and the pins 55a-1, 55b-1 , 55n-1 enters the upper spiral groove 54a, thereby supporting the disk D against the tray 51a.

  On the other hand, when a desired one is selected from a plurality of disks D stored and held in advance in the apparatus main body 1, tray pins 55a-1, 55b-1, When 55n-1 is engaged with the upper spiral groove 54a, the pins 55a-1, 55b-1, 55n-1 of the tray supporting the disk D below the selected disk D are on the lower side. An insertion space for the disk reproducing means 2 is formed between the selected disk D and the disk D below the selected disk D. When the tray pins 55a-1, 55b-1, 55n-1 supporting the selected disk D are engaged with the lower spiral groove 54a, the tray supporting the selected disk D is supported. The upper tray is moved so as to engage with the upper spiral groove 54a via the intermediate spiral groove 54b between the pillars 52a to 52n. In this case, since the spiral groove 54b is connected to the lower spiral groove 54a in only one place, after the tray pins 55a-1, 55b-1, 55n-1 are engaged with the spiral groove 54b, Until the column rotates once, the pins 55a-1, 55b-1, 55n-1 of the other trays cannot engage with the spiral groove 54b. That is, only one tray is always located in the area of the spiral groove 54b during the rotation of the column.

  Then, as shown in FIG. 9, when the tray 51a that has reached the upper end of the intermediate spiral groove 54b enters the region of the upper spiral groove 54a, the tray 51a becomes the state of FIG. 10 and is supported by the tray. The center of the disk D is adjusted by fitting its center hole into the cylindrical member 59. That is, as shown in FIG. 11A, even if the disk D is displaced due to the vibration when the tray is raised, the tip end portion of the cylindrical member 59 is formed to be tapered. ), The disk D is centered by engagement between the hole edge and the tapered surface, and as shown in FIG. 11C, the axis alignment with the turntable 4 described later is performed. D can be reliably placed on the turntable 4.

  When the desired disk D is selected as described above, a space corresponding to the height of the spiral groove 54b is formed between the selected disk D and the disk D below the selected disk D as shown in FIG. W can do.

  In this state, the disk reproducing means 2 is retracted to the retracted position parallel to the right side plate under the driving force of a driving source (not shown) that is activated following the above series of operations. Is moved around the selected disk D as shown in FIG. 12 and FIG. The disc reproducing means 2 thus moved engages with a reproducing position correcting member 19 provided on the bottom plate 11a of the apparatus main body 1, so that the reproducing position is correctly defined. In this state, the large diameter gear 58 rotates in the reverse direction, and the tray supporting the selected disk D descends along the spiral groove 54b via the small diameter gear 52a-1 as shown in FIGS. Thus, the center hole of the disk D supported by the tray 51a is guided by the guide protrusion 4a-1 of the turntable 4 and is surely placed on the turntable 4. On the other hand, since the column body 52a continues to rotate, the tray 51a continues to descend and moves away from the disk D as shown in FIG.

  In this state, reproduction can be performed by rotating the turntable 4 and moving the pickup 6 in the radial direction of the disk D.

  As described above, according to the first embodiment, since the tip 59a of the cylindrical member 59 suspended from the top plate 11f, which is one of the components of the apparatus main body 1, is tapered, it is stored in the apparatus main body. When a desired disk D is selected from the held disks D, a cylinder is surely formed even if the selected disk D and the center hole of the disk D positioned above the selected disk are slightly misaligned. The center shift can be corrected by engaging the member. As a result, the delivery of the disk D to the turntable that has moved below the selected disk D is performed reliably, and no reproduction failure occurs.

  Further, the tapered tip diameter of the cylindrical member 59 is smaller than the tip diameter of the disc guide protrusion 4a of the turntable 4, so that the cylinder D is placed in the center hole of the disc immediately before the disc D is placed on the turntable. By engaging the member 59, the mounting accuracy of the disk D on the turntable 4 can be further increased.

1 is an external perspective view showing the entire disk device of the present invention. It is the perspective view which removed the front board, the right side board, and the top plate, and showed the principal part inside. It is a perspective view which shows the state which inserted one disk in the apparatus main body, and removes a right side board and a top plate. It is a perspective view which shows the state in which the disk was mounted in the tray. It is a perspective view which shows the state which pressed and supported the disk to the tray with the leaf | plate spring. It is a perspective view which shows a disk holding means. It is a perspective view of the mechanism part which raises / lowers a disk. It is a perspective view which shows the state which removed a part of the mechanism part from the baseplate of the apparatus main body. It is the figure which removed the front board in the state which selected the disk, and looked at the inside of an apparatus main body from the front. FIG. 10 is a view of the inside of the apparatus main body viewed from the front surface with the front plate removed in a state where the selected disc of FIG. 9 is raised and the center hole of the disc is fitted to the cylindrical member suspended from the top plate. It is explanatory drawing of the process in which the center hole of a disk is fitted to the cylindrical member suspended from the top plate, and center deviation is corrected. FIG. 6 is a perspective view showing a state where the disc reproducing means is moved from the retracted position to the reproducing position, with the right side plate and the top plate removed. It is a front view which removes a front board in the state of FIG. It is a perspective view which shows the state which mounted the selected disk on the turntable of a disk reproduction | regeneration means, removing a front board, a right side board, and a top plate. It is a front view which shows the state which mounted the selected disk on the turntable of a disk reproduction | regeneration means, removes a front board, a right side board, and a top plate, and shows the inside of an apparatus main body. It is the same figure which shows the reproduction | regeneration state which pulled the tray away from the disk mounted on the turntable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body, 2 Disc reproduction | regeneration means, 3 Disc conveyance mechanism part, 4 Turntable, 5 Disc holding means, 6 Pickup, 7 Playback base, 8 Turning base, 12 Turning axis

Claims (2)

  Disc holding means for storing and holding a plurality of discs in the apparatus main body, and moving the selected disc and the disc above the selected disc upward and moving the lower disc downward to divide the disc into two vertically And one end portion is rotatably supported in the apparatus main body, retracted to a retracted position close to the side plate when not reproduced, and between the selected disk and the disk moved downward during reproduction. Disc reproducing means for entering and reproducing the selected disc placed on a turntable, and reproducing position correcting means provided on the bottom plate of the apparatus main body so as to correct the reproducing position of the disc reproducing means; A cylindrical member suspended from the top plate of the apparatus main body so that the reproducing position correcting means and the axis coincide with each other so as to pass through the center hole of the disk moving upward; Disk device formed tapered Mari. 2. The disk device according to claim 1, wherein the diameter of the tapered tip of the cylindrical member is smaller than the diameter of the tip of the disk guide protrusion of the turntable.

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