JP5198221B2 - Disk device and disk detection method - Google Patents

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 to a storage type disk device capable of storing a plurality of disks and a disk detection 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 the conventional disk device, a sensing device such as a mechanical switch or a photo sensor is provided to detect insertion and ejection of the disk. However, if the parts that drive the mechanical switch cannot move normally due to wear, etc., it will be misjudged that the disc has not been ejected even though the disc has actually been ejected, and the eject operation will continue. However, there was a problem that it was impossible to get out of this state.

Factors for misjudgment include not only wear of parts but also adhesion of foreign matters and deformation of parts. For this reason, the mechanical switch is not driven normally, reaches the mechanical stack, and it becomes difficult to return to normal.
JP 2007-87507 A

  In the conventional disk device of the related art, if a component that drives a mechanical switch that detects insertion or ejection of a disk does not operate normally, a misjudgment is made, and the ejection operation is continued to reach the mechanical stack.

  SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a disk device and a disk detection method capable of continuing normal operation even when a normal output cannot be obtained from a mechanical switch that detects insertion / ejection of a disk. And

According to a first aspect of the present invention, there is provided a disc reproducing apparatus according to the present invention, wherein a housing having a disc insertion slot and a disc inserted through the disc insertion slot are guided to a loading position, and from the loading position to the disc insertion slot. A transfer unit that is provided in the housing and rotationally drives the disk at the loading position; a sliding member that starts sliding from an initial position in response to insertion and ejection of the disk ; A first disk detection unit including a switching element that performs a switching operation when the sliding member returns to an initial position and detects insertion and ejection of the disk; and insertion of the disk into the first disk detection A second disk detector including a sensor that detects the disk earlier than the first disk and detects the ejection of the disk later than the first disk detector; , Comprising a control unit for controlling the operation specified by determining the detection result of the second disc detecting unit, wherein the control unit, the slide member during ejection of the disk does not return to the initial position When the switch element shows an unspecified response, the response result is not applied as a determination element, and the ejection of the disk is determined with priority given to the detection result of the sensor.

The present invention according to claim 7 is directed to a transfer unit that guides a disk inserted through a disk insertion slot to a loading position and ejects the disk from the loading position through the disk insertion slot, and the disk at the loading position. the a disc detecting method for a disk device Ru and a drive unit for driving rotation, a sliding member for starting the slide from the initial position in response to insertion and ejection of said disc, said sliding member is the initial position A disk detecting unit including a switching element that performs a switching operation when returning, detecting insertion and ejection of the disk by a sensor, detecting insertion of the disk before the switching element by a sensor, and ejecting the disk to the switch Detecting later than the element, determining the detection result of the switch element and the sensor, and controlling the specified operation; If serial detection result of the switching element without the sliding member during ejection of the disk is returned to the initial position shown outside the specified response without applying the response result determination element, preferentially a detection result of the sensor And determining whether or not the disc is ejected.

  In the disk device of the present invention, even when the guide pin interlocked with the sliding member does not normally return to the initial position when the disk is ejected, the ejection of the disk can be detected and the next operation can be performed. The event can be avoided.

  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 discharged 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 in FIG. 3 and the transfer position shown in FIG. 4. FIG. 7 shows the first transfer roller 231 in the transfer unit 20. It is a perspective view which shows the drive 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 carried in 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, and the bearing 34 is inserted into the outer periphery of the selection shafts 32a32b and 32c, and a locking portion (at a fulcrum 34a in FIG. Are formed so as to protrude integrally, and this locking portion is slidably locked in the groove 33 of each selection shaft 32.

  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 rotates counterclockwise, the tray 31 moves along the selection shaft 32. When the selection shaft 32 is rotated downward one by one 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 32a32b, 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 illustrating the configuration of a 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.

  When the disc D is ejected in the (B direction), the guide pins 9a and 9b are once pushed open by the disc D. 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.

  FIG. 12C is an enlarged front view showing the slider 57a and the guide pin 9a. Further, as shown in FIG. 3, photosensors 59a and 59b (hereinafter referred to as sensors) for detecting insertion and ejection (insertion / removal) of the disk D are provided inside the insertion slot 2. The sensors 59a and 59b are disposed inside the guide pins 9a and 9b, and the distance between the sensors 59a and 59b is shorter than the distance between the guide pins 9a and 9b. 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 that detects 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 that detects 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 first disk detection unit that detects insertion and ejection (insertion / removal) of the disk D. The photosensors 59a and 59b constitute a second disc detection unit that detects insertion of the disc D before the first detection unit and detects ejection of the disc D later than the first detection unit. .

  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 sensors 59a and 59b are blocked from passing light by the disk D, and then the guide pins 9a and 9b are opened away from each other, and the switches SW1 and SW2 are turned off. Disc insertion 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 held in 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 user removes the disk D in this state, the sensors 59a and 59b transmit light and detect ejection of the disk D.

  Accordingly, 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 the ejection of the disk D, and the sensors 59a and 59b eject the disk D a little later. Detected. 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.

  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 detection results from the sensor 50 that detects the chucking of the disk D and the photosensors 59a and 59b that detect the insertion and removal of the disk D, and further according to the opening and closing of the guide pins 9a and 9b. The outputs of the switches SW1 and SW2 and the switches SW3 and SW4 that switch are supplied.

  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.

  By the way, in the retractable disk device 100, the determination of insertion or ejection of the disk D is performed by using mechanical switches SW1 and SW2 provided near the insertion slot 2 and sensing devices such as the photosensors 59a and 59b. In particular, the switches SW1 and SW2 are structured to be turned on and off by sliders 57a and 57b interlocked with guide pins 9a and 9b that operate by inserting and ejecting the disk D.

  However, the guide pins 9a and 9b may not normally return to the initial position even when the disk D is removed. If the controller 60 does not return to the initial position, the controller 60 determines that the disk D has not yet been removed, so that it cannot transition to the next operation and effectively falls into the mechanical stack state. Therefore, even if there is a request for reloading, since the disk has actually been removed, it cannot be loaded, and the ejection operation is continued, so that it is impossible to escape from this state.

  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. 15A shows a state in which the guide pins 9a and 9b are normally returned to the initial positions. In this state, when the sliders 57a and 57b return to the initial positions, the switches SW1 and SW2 are pressed and turned on.

  FIG. 15B shows a state in which one of the guide pins 9a and 9b does not normally return to the initial position. In this state, since the slider 57a does not return to the initial position, the switch SW1 is not pressed and the switch remains off. FIG. 15C shows a state where the other guide pin 9b does not normally return to the initial position. In this state, since the slider 57b does not return to the initial position, the switch SW2 is not pressed and the switch remains off.

  As a factor that prevents the guide pins 9a or 9b from returning to the initial position, friction between the studs 58a and 58b and the front surface portion 1a of the housing 1 can be considered. For example, as shown in FIG. 12C, when loading or ejecting the disk D, a load is applied to the guide pins 9a and 9b and the sliders 57a and 57b slide, but the studs 58a and 58b Since the front portion 1a is generally made of metal, the front portion 1a in contact with the studs 58a and 58b is worn by friction between the metals. Further, when the loading and ejecting operations of the disk D are repeated, the wear naturally increases, and the swinging load of the guide pins 9a and 9b increases.

  The guide pins 9a and 9b are urged in the direction of pulling each other by the spring, but the sliders 57a and 57b may not return to the initial positions only by the force of the spring. This can be improved by increasing the force of the spring, but the load during insertion and ejection of the disk D increases and the feeling of insertion deteriorates, so there is a limit to increasing the spring force.

  Further, since the sliders 57a, 57b and the like are parts near the insertion port 2, foreign matter and the like are easily introduced, and even when foreign matter or the like adheres to the sliding portion, the guide pins 9a and 9b become the sliding load in the same manner. It becomes a factor not to return to the initial position. In addition, deformation of the sliding surfaces of the sliders 57a and 57b can be cited as a factor.

  Therefore, the present invention is characterized in that even when the guide pins 9a and 9b do not return to the initial positions, the operation moves to the next designated operation so that the mechanical stack can be avoided.

  That is, in the present invention, at the timing when the photosensors 59a and 59b detect the ejection of the disk (no disk) when the disk D is ejected, the logical values of the switches SW1 and SW2 are confirmed, and the unresponsive switch is determined to be abnormal. The process proceeds to the next operation.

  FIG. 16 is a plan view showing the positional relationship between the guide pins 9a and 9b and the photosensors 59a and 59b in the vicinity of the insertion slot 2, and shows the operation when the disk D is ejected. An arrow B indicates the ejection direction of the disk D.

  FIG. 17 shows output waveforms of the switches SW1 and SW2 and the sensors 59a and 59b. 17A shows an output waveform of the switches SW1 and SW2 when the guide pins 9a and 9b return to the initial position normally, and FIG. 17B shows that the guide pin 9b does not return to the initial position normally. The output waveform when the switch SW2 responds outside the specification is shown.

  If it is normal, when the disk D is ejected and the user removes it, the guide pins 9a and 9b provided in the insertion slot 2 return to the initial position, and in conjunction with this, the sliders 57a and 57b return to the initial position. The outputs of SW1 and SW2 change from “H” to “L”. Next, the disk D passes through the positions of the photosensors 59a and 59b, and the outputs of the photosensors 59a and 59b change from "H" to "L".

  Accordingly, as shown in FIG. 17A, the control unit 60 determines that the logical values of the switches SW1 and SW2 are “L” at the timing t1 when the logical values of the photosensors 59a and 59b change (H → L). It is determined that the disk D has been removed, and the process proceeds to the designated next operation.

  On the other hand, if the slider 57b does not return to the initial position due to a problem with the sliders 57a and 57b, for example, as shown in FIG. 17B, the output of the switch SW1 changes from “H” to “L”. The output of SW2 remains “H” and indicates an unspecified response. Thereafter, the disk D passes through the positions of the photosensors 59a and 59b and is ejected, and the outputs of the photosensors 59a and 59b change from “H” to “L”.

  In this case, the control unit 60 confirms the logical values of the switches SW1 and SW2 and performs self-diagnosis processing at the timing t1 when the logical values of the photosensors 59a and 59b change from H to L. That is, if it is normal, the output of the switches SW1 and SW2 should already be “L” at timing t1, but if there is a switch that remains “H” (with disk), that switch (here SW2). ) Output is abnormal, that is, it is determined that the guide pin 9b has not returned.

In the subsequent control, the detection output of the switch SW2 determined to be abnormal (the guide pin does not return) is not applied as a determination element, and the detection results of the sensors 59a and 59b and the normal switch SW1 are given priority to the disk D. Is determined, and the next control is started. Therefore, by such a self-diagnosis process, even when the guide pins 9a and 9b do not return to the initial position, it is possible to shift to the designated next operation and avoid the mechanical stack.
When the switches SW1 and SW2 are re-inspected after the loading is completed and the guide pins 9a and 9b return to normal, the detection results of the switches SW1 and SW2 are applied as determination elements in the subsequent operation.

  Thus, according to the present invention, normal operation can be continued even when the sliders 57a and 57b interlocked with the guide pins 9a and 9b do not normally return to the initial position when the disk D is ejected. The event can be avoided.

  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 positional relationship of a guide pin and a photosensor. The wave form diagram which shows the output waveform of a switch element and a photo sensor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Disc 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 ... Disc 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)
58a, 58b ... Stud 59a, 59b ... Photo sensor 60 ... Control unit 61 ... Spindle motor 62 ... Thread motor 63 ... Servo controller 64 ... RF amplifier M1, M2, M3 ... Motor SW1, SW2 ... Switch element 100 ... Storage type disk device

Claims (9)

A housing having a disk insertion slot;
A transfer unit that guides a disc inserted through the disc insertion port to a loading position and discharges the disc from the loading position through the disc insertion port;
A drive unit provided in the housing and for rotationally driving the disk at the loading position;
A sliding member that starts sliding from an initial position in response to insertion and ejection of the disk, and a switching element that performs switching operation when the sliding member returns to the initial position and detects insertion and ejection of the disk ; A first disk detector including:
A second disk detection unit including a sensor that detects insertion of the disk before the first disk detection unit and detects ejection of the disk later than the first disk detection unit;
A control unit that determines the detection results of the first and second disk detection units and controls a specified operation;
If the sliding member does not return to the initial position when the disc is ejected and the switch element exhibits an unspecified response, the control unit does not apply the response result as a determination factor, and the detection result of the sensor The disc apparatus is characterized in that the disc ejection is determined with priority given to.   The control unit determines the detection result of the switch element at the detection timing of the sensor when the disk is ejected, and when the switch element shows an unspecified response, the disk is based on the detection result of the sensor. The disk apparatus according to claim 1, wherein the discharge is judged.   The detection output from the switch element and the sensor is supplied to the control unit as a binary logical value, and the control unit determines ejection of the disk based on the logical value exhibited by the switch element and the sensor. 3. The disk device according to claim 2, wherein: Wherein, when said sliding member is returned to normal initial position, the detection result in disk device according to claim 1, wherein applying the determination factor of the switching element. The sliding member includes a pair of sliders arranged symmetrically with respect to the disc insertion slot and sliding in parallel with the disc insertion slot,
Each mounting guide pins on the slider, the guide pin pushes open the insertion and removal of the disk, according to claim 1, wherein said switching element when the guide pin is returned to its original position, characterized in that the operating switch Disk unit. The second disk detection unit includes a pair of photosensors arranged inside the housing with respect to the pair of sliders,
6. The disk device according to claim 5 , wherein a distance between the pair of photosensors is shorter than a distance between the guide pins. Ru comprising a transfer unit for discharging through the disc insertion opening from said loading position and guides the disk inserted through the disk insertion opening in the loaded position, and a driving unit for rotationally driving the disc in the loading position A disk detection method for a disk device ,
Inserting the disk by a disk detection unit including a sliding member that starts sliding from an initial position in response to insertion and ejection of the disk, and a switch element that performs a switching operation when the sliding member returns to the initial position And detecting discharge,
The insertion of the disk is detected by the sensor before the switch element, and the ejection of the disk is detected later than the switch element,
Control the designated operation by judging the detection result of the switch element and the sensor,
If the sliding member does not return to the initial position when the disc is ejected and the detection result of the switch element shows an unspecified response, the response result is not applied as a determination element, and the detection result of the sensor is given priority. And determining whether the disk is ejected. When the disk is ejected, the detection result of the switch element is determined at the detection timing of the sensor, and when the switch element shows an unspecified response, the ejection of the disk is determined based on the detection result of the sensor. 8. The disk detection method according to claim 7, wherein: 9. The disk detection method according to claim 8 , wherein when the sliding member returns to the initial position normally, the detection result of the switch element is applied as a determination element.

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