JP2010118118A - Disk device and wrong insertion prevention method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device preventing wrong insertion during ejection of a disk. <P>SOLUTION: The disk device includes: a casing having a disk slot, a chucking mechanism for holding a disk, a transfer unit for transferring the disk between the disk slot and the holding position of the chucking mechanism, a switching element switched according to insertion/ejection of a disk to detect the insertion/ejection of the disk, and a control unit for determining disk wrong insertion by monitoring the disk holding state of the chucking mechanism and the operation of the switching element during the ejection operation of the disk, controlling the transfer unit when disks are wrongly inserted to eject the second disk inserted later, and ejecting the first disk inserted first after the ejection of the second disk. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disk device capable of reproducing and recording a disk such as a CD (Compact Disk) and a DVD (Digital Versatile Disc), and more particularly, a storage disk device capable of storing a plurality of disks and a dual disk. The present invention relates to an insertion prevention method.

  2. Description of the Related Art Conventionally, a changer-type disk device that can store a plurality of disks loads (conveys) a disk inserted from a disk insertion slot into a housing by a transfer unit, and loads the loaded disk in the thickness direction of the disk. They are stored in trays stacked on each other. A disk selected from the plurality of trays is rotationally driven by a drive unit, and data recorded on the disk is read or recorded on the disk by an optical head.

  Patent Document 1 describes such a storage disk device.

  In addition, in such a storage type disc device, a shutter mechanism is provided to prevent the insertion of irregularly shaped discs and double disc insertion, and the shutter is closed except during loading and ejecting to prevent entry of foreign matter and the like. ing.

  However, since the shutter opens while the disc is being ejected, if another disc is accidentally pushed at this time, it may enter the apparatus. If such an erroneous operation is performed, two disks may be inserted into the apparatus, and none of the disks can be ejected, and there is a possibility of falling into a mechanical stack.

Patent Document 2 discloses a disk abnormal insertion detection device. In this example, a device for detecting that a plurality of discs to be inserted one by one has been successively inserted is described. However, there is no description about countermeasures for erroneous insertion at the time of disc ejection.
JP 2007-87507 A JP 2001-101746 A

  In the conventional disk device, a shutter mechanism is provided to prevent double insertion of the disk. However, since the shutter opens during the ejection of the disk, another disk may be erroneously inserted at this time. There were cases where two disks were inserted inside the apparatus, and none of the disks could be ejected.

  SUMMARY OF THE INVENTION In view of the above circumstances, the present invention provides a disk device and a double insertion prevention method for monitoring an erroneous insertion during ejection of a disk and discharging a subsequently inserted disk when determining double insertion. With the goal.

  According to a first aspect of the present invention, there is provided a disc apparatus according to the present invention, comprising: a housing having a disc insertion slot; a tray that supports the disc; and a holding member disposed to face the tray; A chucking mechanism for holding the disk, a transfer unit for transferring the disk between the disk insertion port and the holding position of the chucking mechanism, and a drive unit for rotationally driving the disk at the holding position; Switching operation according to the insertion and ejection of the disk, a disk detection unit including a switch element for detecting the insertion and ejection of the disk, and the holding state of the disk in the chucking mechanism during the disk ejection operation and the disk The operation of the switch element is monitored to discriminate double insertion of the disk. When the disk is inserted twice, the transfer unit is And a controller that ejects the second disc inserted later and ejects the first disc inserted earlier after the second disc is ejected. It is characterized by.

According to a ninth aspect of the present invention, there is provided a double insertion preventing method according to the present invention, wherein a holding member is disposed opposite to a tray that supports a disk, and the chucking mechanism is capable of holding the disk between the holding member and the tray. A transfer unit for transferring the disk between a disk insertion slot and a holding position of the chucking mechanism;
The insertion and ejection of the disk are detected by a switching element that performs switching operation according to the insertion and ejection of the disk, and the holding state of the disk and the operation of the switching element are monitored in the chucking mechanism during the ejection of the disk. Then, disc double insertion is discriminated, and when the disc is double inserted, the transfer unit is controlled to eject the second disc inserted later, and the second disc is ejected. After that, the first inserted disc is ejected.

  In the disk device of the present invention, it is possible to monitor erroneous insertion during ejection of the disk, and when the double insertion is determined, the subsequently inserted disk can be ejected, and double insertion can be prevented.

  Hereinafter, an embodiment of a storage disk device of the present invention will be described with reference to the drawings.

  First, the structure of the storage disk device 100 according to an embodiment of the present invention will be described. The basic structure of the disk device 100 is the same as that described in Patent Document 1.

 FIG. 1 and FIG. 2 are plan views showing the internal structure of the storage disk device 100, and mainly show the drive unit 10 and the disk storage portion 30 configured in the housing 1. Note that a disk insertion slot 2 is provided on the right side of the figure, and the disk is inserted into the disk device 100 from the direction of arrow A in the figure and ejected in the direction of arrow B.

 The drive unit 10 can rotate between a retracted position shown in FIG. 1 and an intervention position shown in FIG. 2 with one end as a fulcrum, and is provided with a turntable 11 at the other end. When the drive unit 10 is in the intervention position, the drive unit 10 selects the disk stored in the disk storage unit 30 and places it on the turntable 11, and drives the disk to perform reproduction or recording. The disk storage unit 30 includes a stacked tray 31 for storing a plurality of disks. The detailed configuration will be described later.

  The drive unit 10 is supported by a unit support base 13 as shown in FIG. The inner edge 13 a of the support base 13 has an arc shape, and the inner edge 13 a is located slightly away from the outer peripheral edge of the disk supported by the disk storage portion 30.

  The drive unit 10 has an elongated drive base 12. A support shaft 14 protrudes upward on the back side of the unit support base 13, and the drive base 12 is supported by the support shaft 14. The drive unit 10 is supported by the support shaft 14 in the direction of arrow C (FIG. 2). To turn. The drive unit 10 is rotated by the movement of the drive slider 15, and the drive slider 15 is moved by the rotation of the first motor M1 (not shown).

  As shown in FIG. 2, when the drive unit 10 rotates to the intervention position, the turntable 11 moves to the disk storage unit 30. In this intervention position, the rotation center of the turntable 11 is located below the center hole of the disk supported by the tray 31.

    A spindle motor is attached to the rotating end of the drive base 12, and the turntable 11 is fixed to a motor shaft 11a of the spindle motor. The turntable 11 has a central convex portion 11b that enters the central hole of the disk D and a flange portion 11c that extends from the central convex portion 11b.

  In addition, a clamp mechanism is mounted in the turntable 11, and this clamp mechanism has clamp claws (not shown) protruding radially from the central convex portion 11b. When the clamp claw is retracted into the central convex portion 11b, it is in the non-clamp mode. When the clamp claw protrudes, the peripheral portion of the center hole Da of the disk D is sandwiched between the clamp claw and the flange portion 11c, and the disk D is clamped to the turntable 11 to enter the clamp mode.

  The drive base 12 of the drive unit 10 is equipped with a clamp switching mechanism for operating the clamp pawl. After the drive unit 10 moves to the intervention position, the clamp pawl is moved from the non-clamp mode by the movement of the drive slider 15. Switch to clamp mode.

  Further, an optical head 16 is mounted on the drive base 12 adjacent to the turntable 11. An objective lens 17 is provided on the upper surface of the optical head 16, and a thread mechanism (not shown) for moving the optical head 16 in the radial direction of the disk D is provided. The objective lens 17 can be moved in the radial direction of the disk D clamped to the turntable 11 by the thread mechanism.

  Also, dampers 18 are fixed at three locations on the bottom surface of the housing 1. That is, support shafts 19 are fixed downward at three locations on the bottom surface of the support base 13, and each support shaft 19 is supported by each damper 18. 1 can be elastically supported on the bottom surface.

    FIG. 3 is a plan view showing the internal structure of the storage disk device 100, and mainly shows the configuration of the disk storage unit 30 and the transfer unit 20 that transfers the disk D to the disk storage unit 30. 4 and 5 are plan views showing the loading operation of the disk D into the disk storage unit 30, and FIG. 6 is a plan view showing when the disk D is driven.

  The transfer unit 20 has an elongated unit frame 21 extending in parallel with the disc insertion slot 2, and a roller shaft 22 is provided in parallel in the unit frame 21, and both ends of the roller shaft 22 are rotatable to the side surface of the unit frame 21. It is supported by.

  The outer periphery of the roller shaft 22 is provided with a first transfer roller 231 and a second transfer roller 232 made of a material having a high friction coefficient such as natural rubber, and the transfer rollers 231 and 232 are spaced apart in the axial direction. Arranged to be free. The transfer unit 20 rotates (revolves) around the fulcrum shaft 53 between the standby position shown in FIG. 3 and the transfer position shown in FIG.

  FIG. 7 is a perspective view showing the first transfer roller 231 in the transfer unit 20 and its driving mechanism. The transfer roller 231 faces the sliding member 24 provided in the unit frame 21, and sandwiches the disk D between the transfer roller 231 and the sliding member 24 (and the transfer roller 232 and the sliding member 24). . Therefore, the disk D can be carried into the housing 1 by the rotation of the transfer rollers 231 and 232 and the disk D can be discharged from the housing 1 by rotating the transfer rollers 231 and 232 in the reverse direction.

  One end of the roller shaft 22 protrudes from the side surface 21 a of the unit frame 21, and the gear 25 is fixed to the protruding roller shaft 22. A gear 26 that meshes with the gear 25 is provided on the side surface 21a. Further, on the lower surface of the unit frame 21, a support piece 21b is integrally formed protruding downward, a shaft 27 is fixed to the support piece 21b, and a gear in which a gear 28 and a worm wheel 29 are integrated with the shaft 27 is rotated. Supports freely.

  Further, a fulcrum shaft 53 of the gear 51 and the worm gear 52 is rotatably inserted into the bearing portion 21c provided in the unit frame 21 so that the worm wheel 29 and the worm gear 52 are engaged with each other. The gear 51 and the worm gear 52 are rotated by a third motor M3 (see FIG. 1), and the rotational force of the worm wheel 29 is transmitted to the gear 25 via the gear 28 and the gear 26 to drive the roller shaft 22. The transfer rollers 231 and 232 are rotated.

  As shown in FIG. 7, the gear 51 below the fulcrum shaft 53 fixed to the bottom surface of the housing 1 meshes with an intermediate gear 54 (FIG. 1) provided on the bottom surface of the housing 1. It is driven by a motor M3.

  The transfer unit 20 is slightly separated from the outer peripheral edge of the disk D supported by the tray 31 of the disk storage unit 30 in the standby position of FIG. On the other hand, as shown in FIG. 4, when the transfer unit 20 is rotated to the transfer position about the fulcrum shaft 53, a virtual line (conveyance center line Ob) perpendicular to the axis of the transfer rollers 231 and 232 is The direction is 30.

  When the transfer unit 20 is in the transfer position of FIG. 4, the disk D loaded by the transfer rollers 231 and 232 is supplied to the tray 31 of the disk storage unit 30, and then, as shown in FIG. Returns to the standby position.

  FIG. 5 shows a state where the disk D is supported (chucked) on the tray 31. The disk D supplied to the tray 31 is held by the tray 31 and holding members 46, 47, 48. The operation of the holding members 46, 47, 48 will be described in detail later. FIG. 6 shows a state when the disk D is reproduced. The disk D is released from chucking by the holding members 46, 47 and 48 and is supported by the turntable 11.

  FIGS. 8A and 8B are perspective views showing the shutter opening / closing mechanism provided at the disk insertion slot 2 as viewed from the front side of the housing 1. The shutter 3 is formed of, for example, a thin metal plate and has an elongated shape that covers the disc insertion slot 2. Sliding pins 4a and 4b are fixed to the rear surface of the upper end of the shutter 3 at intervals, and elongated holes 5a and 5b are formed in the front surface 1a of the housing 1 in the vertical direction. By inserting the slide pins 4a and 4b into the elongated holes 5a and 5b, the shutter 3 moves up and down while in contact with the front surface 1a of the housing 1.

  An opening / closing member 6 is provided on the rear surface of the shutter 3, and opening / closing cams 7 a and 7 b are formed on the opening / closing member 6. The open / close cams 7a and 7b are long holes provided in the shutter open / close member 6, and the sliding pins 4a and 4b are inserted into the open / close cams 7a and 7b.

  The open / close cams 7a and 7b are stepped, and when the open / close member 6 moves to the arrow X1 side, as shown in FIG. 8A, the slide pins 4a and 4b are pushed down and the shutter 3 is moved. Descends and closes the insertion slot 2. When the opening / closing member 6 moves in the X2 direction, the sliding pins 4a and 4b are pushed up as shown in FIG. 8B, and the shutter 3 moves upward to open the insertion port 2. In this state, the disk D can be taken in and out. Although the mechanism for moving the opening / closing member 6 is omitted, the shutter 3 is opened when the disk D is inserted or ejected, and the shutter 3 is closed in other states.

  Next, the configuration of the disk storage unit 30 will be described. As shown in FIG. 9, the disk storage unit 30 is provided in the housing 8 and has a plurality of fan-shaped disk supports (tray) 31. The housing 8 is in the housing 1. Each tray 31 is supported by shafts (selection shafts) 32a, 32b, and 32c at three locations on the outer edge. Reference numeral 8 a denotes a ceiling portion of the housing 8.

FIG. 10 is an enlarged view showing one of the selection shafts 32 a, 32 b, and 32 c, and FIG. 11 is a view showing a state where the disk D is supported by one of the trays 31. In the following description, the selection shafts 32a, 32b, and 32c may be collectively referred to as the selection shaft 32.
As shown in FIG. 10, a spiral groove 33 is formed on the outer periphery of the selection shaft 32. The grooves 33 have dense pitches 33a and 33b above and below the selection shaft 32, and form grooves of at least 5 rounds (5 pitches) or more. Further, in the intermediate portion of the selection shaft 32, the grooves 33 have a sparse pitch 33c, and the grooves 33 are formed by one pitch between the upper dense pitch and the lower dense pitch.

  The trays 31 are formed of, for example, a thin metal plate, and are provided in a stack of six sheets in the vertical direction, each having a fan shape. As shown in FIG. 11, a bearing 34 is fixed to the tray 31. The bearing 34 is inserted into the outer periphery of the selection shafts 32 a, 32 b, and 32 c, and a locking portion (a fulcrum of FIG. 10) is placed inside the bearing 34. 34a (shown by 34a) integrally projectingly formed, and this locking portion is slidably locked in the groove 33 of each selection shaft 32.

  Further, the locking portions 34a of the bearings 34 of the six trays 31 are locked to the pitches of the grooves 33. When the selection shaft 32 is rotated counterclockwise, the tray 31 is moved along the selection shaft 32 by one. When the selection shaft 32 is rotated clockwise and the selection shaft 32 rotates clockwise, the tray 31 is fed upward along the selection shaft 32 one by one and moves up and down like an elevator. Therefore, the selection shaft 32 and the drive unit that rotates the selection shaft 32 constitute an elevator mechanism.

  Thus, each tray 31 is raised or lowered by the rotation of the selection shaft 32, and the tray 31 located in the sparse pitch portion 33c in the center portion of the selection shaft 32 (the tray 31 at the selection position α) is adjacent to the lower tray 31. The drive unit 10 can be made to enter the space greatly away from it, and reproduction and recording are possible.

  The bearings 34 inserted through the selection shafts 32a, 32b, 32c are provided with holding members 46, 47, 48 facing the tray 31, respectively. However, in FIGS. 3 and 4 to 6, the holding members 46, 47, and 48 are illustrated through the tray 31 for easy understanding.

  As shown in FIG. 3, the holding member 46 is rotatably supported on the outer periphery of the bearing 34 on the selection shaft 32a. Similarly, the holding member 47 is arranged on the outer periphery of the bearing 34 on the selection shaft 32b. 48 is rotatably supported on the outer periphery of the bearing 34 on the selection shaft 32c. As shown in FIG. 3, a tension coil spring 49 is hung between each holding member 46, 47, 48 and the tray 31, and the holding member 46, 47, 48 is urged counterclockwise. Yes.

  The holding members 46, 47, and 48 are made of, for example, a synthetic resin material, and are rotatably supported on the outer periphery of the bearing 34 while being in close contact with the lower surface of the tray 31. The holding members 46, 47, and 48 integrally form arm portions 46a, 47a, and 48a, and have stepped holding claws 46b, 47b, and 48b at the distal ends of the arm portions 46a, 47a, and 48a.

  The holding claws 46b, 47b, and 48b are opposed to each other with a predetermined distance from the lower surface of the tray 31, and this facing distance is equal to or slightly larger than the thickness dimension of the disk D. The periphery of the disk D can be held between the lower surface and the holding claws 46b, 47b, 48b. In this way, each holding member 46, 47, 48 constitutes a chucking mechanism that holds the disk D with the tray 31.

  12A and 12B are diagrams showing the configuration of a disk detection unit that detects insertion and ejection of the disk D, where FIG. 12A is a perspective view and FIG. 12B is a cross-sectional view. Two horizontally long holes 2a and 2b are provided in parallel to the insertion opening 2 below the disk insertion opening 2 of the front face 1a of the housing 1, and the inner surface of the holes 2a and 2b is formed in the hole 2a. Sliding members (sliders) 57a and 57b that slide along are attached.

  The sliders 57a and 57b are provided with studs 58a and 58b penetrating the holes 2a and 2b. Guide pins 9a and 9b are attached to the upper surfaces of the sliders 57a and 57b. The guide pins 9a and 9b are urged by a spring (not shown) in a direction that attracts each other. When the disc D is inserted from the insertion port 2 (in the direction A), the guide pins 9a and 9b The sliders 57a and 57b are pushed and opened by the disk D against the above, and move away from each other along the holes 2a and 2b.

  Also, when the disc D is ejected (in the direction B), the guide pins 9a and 9b are once pushed open by the disc D, and when the disc D is ejected, the guide pins 9a and 9b are attracted to each other by the spring force. The sliders 57a and 57b slide to their original positions. The state returned to the original position is set as the initial position.

  In addition, switch elements SW1 and SW2 that perform switching operations by sliding the sliders 57a and 57b are provided on the bottom surface of the housing 1 (hereinafter referred to as switches). FIG. 13 is a bottom view of the stowable disk device 100, in which a pair of sliders 57 a and 57 b are mounted symmetrically inside the disk insertion slot 2, and the bottom surface of the housing 1 is close to the front surface portion 1 a. The switch mounting plate 1b is provided. The switches SW1 and SW2 and the switches SW3 and SW4 that are turned on and off by sliding of the sliders 57a and 57b are mounted on the mounting plate 1b.

  The switches SW1 and SW2 are switches that detect that the sliders 57a and 57b are at the initial position, and are turned on when the sliders SW1 and SW2 are at the initial position. The switch SW3 is a switch for detecting that the disk D is ejected to a predetermined position when the disk D is inserted to a predetermined position or when the disk D is ejected. The switch SW4 is a switch for detecting the outermost periphery of the disk D. The switches SW1 and SW2, the sliders 57a and 57b, and the guide pins 9a and 9b constitute a disk detection unit that detects insertion and ejection (insertion / removal) of the disk D.

  Hereinafter, the operation of the disk device 100 will be described.

  First, when loading the disk D into the disk device 100, as shown in FIG. 8B, the shutter 3 is raised and the insertion slot 2 is opened. When the disk D is inserted from the insertion slot 2, the guide pins 9a and 9b open in a direction away from each other, the switches SW1 and SW2 are turned off, and the insertion of the disk D is detected.

  Further, when the guide pins 9a and 9b are opened and the switch S3 is turned on, the third motor M3 (see FIG. 2) is started, and the transfer rollers 231 and 232 of the transfer unit 20 at the standby position are rotated in the loading direction. D is sandwiched between the transfer rollers 231 and 232 and the sandwiching portion 24 (FIG. 7) and carried into the housing 1. At this time, the holding member 46 is rotated in the γ1 direction by the drive member 56 so as not to disturb the loading of the disk D.

  When the outermost periphery of the disk D is detected by the switch SW4, the second motor M2 is restarted, and the transfer unit 20 rotates about the fulcrum shaft 53 to the transfer position shown in FIG. The transfer rollers 231 and 232 continue to rotate while rotating to the transfer position, and the disk D is moved from the disk insertion port 2 to the disk storage portion by the rotation (revolution) of the transfer unit 20 and the rotation of the transfer rollers 231 and 232. It is carried into 30 holding positions. FIG. 5 shows a state in which the disk D is loaded and loaded into the disk storage unit 30.

  When the disk D is inserted, the holding member 46 is rotated in the γ1 direction as shown in FIG. 3. However, as the disk D is inserted, the drive by the drive member 56 is released, and the disk 49 is pulled by the spring 49. To turn. The center of the disk D is indicated by D0 and the center hole is indicated by Da.

  The holding members 47 and 48 are also rotated in the γ4 direction by the spring 49. Therefore, the disk D fed into the tray 31 first hits the holding member 46 as shown in FIG. 4, and rotates the holding member 46 in the direction of γ1 against the urging force of the spring 49.

  Further, the transferred disk D hits the holding members 47 and 48. As a result, as shown in FIG. 5, the disk D enters between the lower surface of the tray 31 and the holding claws 46 b, 47 b, 48 b, and the holding members 47, 48 resist the urging force of the spring 49 in the γ3 direction. Rotate. Then, the outer peripheral edge of the disk D is positioned and chucked by the holding members 47 and 48.

  Further, the sensor 50 detects that the disk D is chucked on the tray 31. That is, as shown in FIG. 5, the detection unit 48h located between the light emitting element and the light receiving element of the sensor 50 is removed, so that the detection output is turned on.

  After the disk D is stored, the transfer unit 20 is rotated from the transfer position to the standby position by the second motor M2. When the transfer unit 20 returns to the standby position, the shutter 3 is closed and the insertion port 2 is closed as shown in FIG. At this time, the disk D is held between the lower surface of the tray 31 and the holding claws 47b, 48b, 48c of the holding members 46, 47, 48.

  When driving the disk D held on the tray 31, as shown in FIG. 6, the central convex portion 11 b (see FIG. 1) of the turntable 11 provided in the drive unit 10 at the intervention position is the central hole Da of the disk D. Enter and clamp disc D. At this time, the holding members 47 and 48 are further rotated in the γ3 direction by the driving member 55, the holding claws 47b and 48b are separated from the outer peripheral edge of the disk D, and the holding member 46 is further γ1 by the driving member 56. The holding claw 46b is separated from the outer peripheral edge of the disk D to the outside.

  Thereafter, the drive unit 10 moves to the bottom side than during the clamping operation, and the disk D moves away from the lower surface of the tray 31. Thus, the disk D clamped by the turntable 11 is driven to rotate by the turntable 11, and the signal recorded on the disk D is read by the optical head 16, or the signal is recorded on the disk D. At this time, the unit support base 13 is elastically supported by the damper 18.

  On the other hand, when the disk D that has been reproduced or recorded is ejected (ejected), the spindle motor stops and the rotation of the turntable 11 stops. Further, the support base 13 is lifted, and the disk D is pressed against the lower surface of the tray 31 at the selected position α. At this time, as shown in FIG. 5, the holding member 46 is rotated in the γ2 direction, the holding members 47 and 48 are rotated in the γ4 direction, and the disk D is placed on the lower surface of the tray 31 and the holding claws 46b, 47b and 48b. And hold on.

  Then, the clamp of the disk D by the turntable 11 is released, the unit support base 13 and the drive unit 10 are lowered toward the bottom surface, and the disk D comes out of the turntable 11.

  Thereafter, the transfer unit 20 moves from the standby position to the transfer position, and the transfer rollers 231 and 232 are rotated in the carry-out direction by the third motor M3. Further, the transfer unit 20 moves from the standby position shown in FIG. 4 to the standby position shown in FIG. 3, so that the disk D moves in the carry-out direction and is ejected from the insertion port 2 by the rotation of the transfer rollers 231 and 232.

  In the middle of ejecting the disk D, the guide pins 9a and 9b are pushed by the disk D and opened away from each other. When the disk D is subsequently ejected, the guide pins 9a and 9b return to the initial positions. When the guide pins 9a and 9b (sliders 57a and 57b) return to the initial positions, the switches SW1 and SW2 are turned on to detect ejection of the disk D. After the disc D is ejected in this way, the holding claws 46b, 47b, 48b are returned to the state of FIG. 3 by the spring 49, the shutter 3 is raised, and the insertion slot 2 is closed.

  In this way, the storage type disc device 100 loads the disc D inserted from the disc insertion slot 2 into the inside of the housing 1 by the transfer unit 20 and puts it in the tray 31 stacked in the disc thickness direction. Can be stored. Further, the disk D selected from the stored tray 31 can be driven to rotate by the drive unit 10 and data can be read or recorded on the disk by the optical head 16.

  FIG. 14 is a block diagram of a control system of the storage disk device 100 of the present invention. In FIG. 14, in the disk device 100, a control unit 60 constituted by a microcomputer controls the overall operation of the device.

 The disk D is rotated at a constant linear velocity by the spindle motor 61, and information is read from the disk D or recorded on the disk D by the optical head 16. The optical head 16 is moved in the radial direction of the disk D by the thread motor 62. A servo controller 63 controls the rotation of the spindle motor 61 under the control of the control unit 60, and controls the tracking control of the optical head 16, the focus control, and the driving of the sled motor 62.

 Reference numeral 64 denotes an RF amplifier, which amplifies an RF signal corresponding to information read by the optical head 16 and transmits it to the next stage. Further, the RF amplifier 64 separates the focus control signal and the tracking control signal from the RF signal and sends these control signals to the servo controller 63.

  A digital signal processing circuit 65 digitizes the RF signal output from the RF amplifier 64 and performs demodulation processing and error correction processing of the digitized signal. A memory 66 such as SDRAM is connected to the digital signal processing circuit 65, and for example, file information such as MP3 compressed music data is temporarily stored in the memory 66 so as to be readable and writable. The file information read from the memory 66 is supplied to the decoder 67. The decoder 66 decompresses MP3 compressed music data, for example, and converts it into uncompressed normal music data.

  A host interface 68 is connected to the control unit 60. The host interface 68 sends a command from the host (not shown) to the control unit 60 and sends data of the disk device 100 to the host. A display unit 69 such as an LCD is connected to the host side so that the current operation state of the disk device 100 can be displayed.

  Furthermore, motor drivers 70, 71, 72 for driving the first motor M1, the second motor M2, and the third motor M3 are connected to the control unit 60. The control unit 60 is supplied with the sensor 50 that detects the chucking of the disk D, and the outputs of the switches SW1 and SW2 and the switches SW3 and SW4 that switch according to the opening and closing of the guide pins 9a and 9b.

  The first motor M1 and the second motor M2 are driven and controlled by motor drivers 71 and 72, respectively, and perform rotation of the drive unit 10 and revolution control of the transfer unit 20. The selection shaft 32 is rotationally controlled to select the disk D or the like. The third motor M3 is driven and controlled by the motor driver 73 and controls the rotation of the transfer rollers 231 and 232. The control unit 60 also performs opening / closing control of the shutter 3.

  In such a retractable disk device 100, detection of insertion and ejection of the disk D is performed by SW1 and SW2 provided in the vicinity of the insertion slot 2. Further, how far the disk D has been inserted is detected by the switches SW3 and SW4.

  FIG. 15 is an explanatory diagram including a front view and a plan view for explaining the movement of the guide pins 9a and 9b (sliders 57a and 57b). FIG. 15 shows a state in which the guide pins 9a and 9b are normally returned to the initial positions. When the guide pins 9a and 9b return to the initial positions, the switches SW1 and SW2 are pushed by the sliders 57a and 57b, and the switches are turned on.

  The switch SW3 detects that the disk D has been inserted to a predetermined position, or that the disk D has been ejected to a predetermined position when the disk D is ejected, and the switch SW4 detects the outermost periphery of the disk D.

  By the way, in such a storage-type disc apparatus 100, various measures are taken in order to prevent the insertion of foreign matter or irregularly shaped discs and the double insertion of discs. For example, a shutter mechanism as shown in FIG. 8 is provided in order to prevent double insertion of foreign matter or discs, and the entrance of foreign matter or the like is prevented by closing the shutter 3 except during loading and ejection. Further, the disk disk insertion slot 2 is narrowed so that only one disk can pass.

  Also in software processing, it is possible to prevent a deformed disk or a plurality of disks from being inserted when the disk is loaded. For example, after the loading of the disc is completed, the shutter 3 is closed, so that the switches SW1 to SW4 provided in the disc insertion slot 2 do not respond.

  Accordingly, when the switches SW1 to SW4 have reacted in this state, it is determined that an irregular disk or a second disk has been inserted, and the transfer rollers 231 and 232 are rotated in the discharge direction to discharge the disk D. This prevents the insertion of deformed discs that can cause mechanical stacking.

  However, even if such a contrivance is applied, if another disk is pushed in while the disk D is ejected, the disk may enter the apparatus in some cases, and any of the disks may not be ejected and may reach the stack.

  That is, when ejecting the disk D, the eject button is pressed, but the flow of ejecting operation is to first open the shutter 3, release chucking of the disk D, and then rotate the transfer rollers 231, 232 to rotate the disk D. Is discharged from the insertion port 2. At this time, the sensor 50 detects the chucking release of the disk D.

  However, since the shutter 3 is opened first in a series of eject operations, another disc may be pushed in even though the disc is being ejected, depending on the user's usage or misrecognition. When such an erroneous operation is performed, two disks are inserted into the apparatus, and the two disks are overlapped in the apparatus, and neither disk can be ejected and the mechanism stack is reached.

  Further, even if the user pulls out one before the two completely overlap, the remaining disk is unchucked and the software recognizes that there is no disk. For this reason, the remaining disk falls into the apparatus and cannot be restored to normal.

  Therefore, the present invention detects the insertion of the second disk by monitoring the switches SW1 to SW4 of the insertion slot 2 during the ejection of the disk D. Further, it is characterized in that the second disc inserted later is ejected in response to the detection result, and then the first disc inserted first is ejected. Furthermore, in order to prevent the recurrence of double insertion, the user is alerted.

  That is, the guide pins 9a and 9b in the insertion slot 2 are closed before the ejection of the disk D is started in a normal ejection series of operations, and therefore, the four switches SW1 linked to the guide pins 9a and 9b are closed. ~ SW4 should not react. However, if any of the switches SW1 to SW4 reacts at this time, there is a possibility that a second disk or the like has been inserted into the insertion slot 2.

  Therefore, the control unit 60 monitors the four switches SW1 to SW4 of the insertion slot 2 at the initial stage of ejection, that is, before the ejection of the disk D is started yet the shutter 3 is opened. If at least one of the switches (SW1 to SW4) reacts at this time, it is determined that the second disk is inserted during the ejection.

  FIG. 16 shows a state in which the second disc D2 is inserted at the start of ejection of the disc D. At this time, the transfer unit 20 is at the transfer position (dotted line position). When the second disk D2 is inserted, the guide pins 9a and 9b are pushed open, so that one of the switches SW1 to SW4 reacts depending on the degree of insertion.

  When the insertion of the second disk D2 is detected during ejection, the control unit 60 does not release chucking for the first existing disk D1, and performs re-chucking when it is about to be released. . Then, the transfer unit 20 is revolved (the transfer rollers 231 and 232 do not rotate) and returned from the transfer position to the standby position. As a result, the second disk D2 is discharged in the direction of the insertion slot 20.

  If the transfer unit 20 is in the standby position when the second disk D2 is inserted, the original disk D is not engaged with the transfer rollers 231 and 232, so the second disk inserted later is inserted. D2 is engaged with the transfer rollers 231 and 232.

Here, the control unit 60 rotates the transfer rollers 231 and 232 in the discharge direction for a predetermined time in a state where the transfer unit 20 is in the standby position, and forcibly discharges the second disk D2. In this state, the transfer rollers 231 and 232 are driven in the forced discharge mode, for example, for 2 seconds (up to 8 seconds). In this way, the second disk D2 is discharged. After the second disk D2 is ejected, the ejection operation of the first disk D originally requested for ejection is performed.
FIG. 17 is a flowchart showing the double insertion prevention process by the control unit 60. In FIG. 17, step S1 is an ejection start step. In step S2, it is determined whether or not the eject button has been pressed. When the eject button is pressed, the response of the switches SW1 to SW4 is confirmed in step S3. If any of the switches SW1 to SW4 reacts, the second disk or the like is inserted into the insertion slot 2 in step S4. Consider it as possible. If there is no response from the switches SW1 to SW4, the process proceeds to step S12.

  If insertion of the second disk D2 is detected during ejection, it is determined in step S5 whether or not the first disk D is chucked using the output of the sensor 50, and if it is chucked. In step S7, if the chucking is cancelled, rechucking is performed in step S6.

  In step S7, the position of the transfer unit 20 is determined. If it is in the transfer position, the transfer unit 20 is revolved and returned to the standby position in step S8. When the transfer unit 20 is in the standby position in step S7 or when the transfer unit 20 returns to the standby position due to revolution, in step S9, the transfer rollers 231 and 232 are rotated in the discharge direction for a predetermined time to force the second sheet. The disc D2 is ejected.

  In the next step S10, it is determined whether or not the second disk D2 has been ejected based on the reaction of the switches SW1 and SW2. If it has been ejected, the process proceeds to step S12, and the first one that originally requested the ejection The disc D is discharged. If it is determined in step S10 that the second disk D2 has not been ejected, it is determined that a deformed disk has been inserted. Forced discharge. When the first disc D is ejected, the ejection operation is terminated in step S13.

  When the second disk D2 is thus discharged, the original disk D (first sheet) is discharged as usual. In addition, a warning is displayed on the display unit 69. FIG. 18 shows a display example on the display unit 69. The display unit 69 can display the operation state of the disk device 100. For example, immediately after the eject button is pressed, “BUSY” indicating that ejection is being prepared is displayed, and “EJECT” is displayed during ejection. If the second disc is inserted by mistake, a warning message such as “NO MORE DISC” is displayed. Thereby, a user can be alerted.

  Thus, according to the present invention, it is possible to prevent another disk from being inserted while the disk is being ejected, and to prevent a mechanical stack. In addition, when there is an abnormal operation, a warning is displayed on the display unit so that the user can recognize that the operation is incorrect.

  In the above description, a storage-type disk device that stores a plurality of disks has been described. However, the present invention can also be applied to a disk device that drives and controls one disk. Various modifications can be made without departing from the scope of the claims.

FIG. 3 is a plan view showing a drive unit and a disk storage portion of the disk device according to the embodiment of the present invention. The top view explaining a motion of the drive unit concerning the embodiment. The top view which shows the structure of the disc storage part and transfer unit which concern on the same embodiment. The top view which shows the loading operation | movement of the disc to a disc storage part. The top view which shows the chucking operation | movement of the disc in a disc storage part. The top view which shows the time of a drive of a disk. The perspective view which shows the structure of the transfer roller of a transfer unit. The perspective view explaining the opening / closing operation | movement of the shutter of a disc apparatus. The perspective view which shows the whole structure of a disk storage part. The front view which shows the structure of the selection axis | shaft of a disk storage part. The front view which shows the holding | maintenance state of the disk in a disk storage part. The perspective view, sectional drawing, and front view which show the structure of the detection part which detects insertion and discharge | emission of a disk. The bottom view of a storage-type disc apparatus. 1 is a block diagram showing a control system of a disk device according to an embodiment of the present invention. Explanatory drawing explaining a motion of a guide pin (slider). The top view which shows the condition where the disk was double-inserted in the disk apparatus. The flowchart which shows the process of double insertion prevention of a disk. FIG. 5 is an explanatory diagram showing various display examples during operation of the disk device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Disk insertion slot 3 ... Shutter 9a, 9b ... Guide pin 10 ... Drive unit 11 ... Turntable 16 ... Optical head 20 ... Transfer unit 21 ... Unit frame 231, 232 ... Transfer roller 30 ... Disk storage part 31 ... Tray 32 (32a, 32b, 32c) ... Selection shaft 33 (33a, 33b, 33c) ... Groove 34 ... Bearing 46,47,48 ... Holding member 50 ... Chucking sensors 57a, 57b ... Slider (sliding member)
60 ... Control unit 61 ... Spindle motor 62 ... Thread motor 63 ... Servo controller 64 ... RF amplifier 69 ... Display unit M1, M2, M3 ... Motor SW1, SW2, SW3, SW4 ... Switch element 100 ... Storage type disk device

Claims (15)

A housing having a disk insertion slot;
A chucking mechanism for holding the disk between the holding member and the tray, and having a tray that supports the disk and a holding member disposed to face the tray;
A transfer unit for transferring the disk between the disk insertion slot and a holding position of the chucking mechanism;
A drive unit for rotationally driving the disk in the holding position;
A disk detection unit including a switching element that performs switching operation according to insertion and ejection of the disk and detects insertion and ejection of the disk;
During the disk ejection operation, the disk holding state in the chucking mechanism and the operation of the switch element are monitored to discriminate double insertion of the disk, and the transfer unit is controlled when the disk is inserted twice. And a controller that ejects the second inserted disc and ejects the first inserted disc after the second disc is ejected. . The chucking mechanism has a sensor for determining a holding state of the disk,
2. The disk device according to claim 1, wherein the control unit determines the double insertion when the switching element reacts in a state where the sensor detects holding of the disk.   2. The control unit according to claim 1, wherein when the double insertion is determined, the control unit discharges the second disk while holding the first disk by the chucking mechanism. Disk unit. The disk detection unit has a sliding member that slides according to the insertion and removal of the disk,
The disk device according to claim 1, wherein the switching element performs a switching operation by sliding of the sliding member to detect insertion / removal of the disk. The sliding member has a pair of sliders that are arranged symmetrically with respect to the disk insertion slot and slide in parallel with the disk insertion slot. A guide pin is attached to each slider, and the guide pin is attached to the slider. Push open by inserting and removing the disc,
5. The disk device according to claim 4, wherein the switching element performs a switching operation in conjunction with the movement of the guide pin. The transport unit includes a transport roller for transporting the disk, and the transport unit is capable of rotating the disk between a transport position on the chucking device side and a standby position on the disk insertion port side. There,
2. The disk apparatus according to claim 1, wherein the rotation direction of the transfer unit and the rotation direction of the front transfer roller are reversed according to insertion and ejection of the disk.   The controller is configured to return the standby unit to the standby position when the transfer unit is in the transfer position, rotate the transfer roller, and eject the second disk when the double insertion is determined. The disk device according to claim 6.   The disk device according to claim 1, wherein the control unit displays a warning on a display unit when determining the double insertion. A holding member is disposed opposite to the tray that supports the disc, and a chucking mechanism that can hold the disc between the holding member and the tray, and a holding position of the disc insertion slot and the chucking mechanism. A transfer unit for transferring between
Detecting insertion and ejection of the disk by a switching element that performs switching operation according to insertion and ejection of the disk,
During the disk ejection operation, the disk holding state in the chucking mechanism and the operation of the switch element are monitored to discriminate double insertion of the disk,
When the disk is inserted twice, the transfer unit is controlled, and the second inserted disk is ejected.
The double insertion prevention method, wherein after the second disc is ejected, the first disc inserted first is ejected. The chucking mechanism has a sensor for determining a holding state of the disk,
10. The double insertion prevention method according to claim 9, wherein the double insertion is discriminated when the switching element reacts in a state where the sensor detects holding of the disk.   10. The double insertion prevention method according to claim 9, wherein when the double insertion is determined, the second disk is ejected after the first disk is held by the chucking mechanism. .   The sliding member that slides in accordance with the insertion / removal of the disk, wherein the switching element performs a switching operation by sliding of the sliding member to detect insertion / removal of the disk. 9. The double insertion prevention method according to 9. The transport unit has a transport roller for transporting the disk,
The transfer unit is capable of rotating the disk between a transfer position on the chucking device side and a standby position on the disk insertion port side,
10. The double insertion prevention method according to claim 9, wherein the rotation direction of the transfer unit and the rotation direction of the front transfer roller are reversed according to the insertion and ejection of the disk.   14. When determining the double insertion, if the transfer unit is in the transfer position, the transfer unit is returned to the standby position, the transfer roller is rotated, and the second disk is ejected. Double insertion prevention method.   The double insertion prevention method according to claim 9, wherein a warning is displayed on a display unit when the double insertion is determined.

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