JP2007273033A - Disk drive unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk drive unit which is excellent in operability and reliability and can be made compact. <P>SOLUTION: The disk drive unit comprises: a fixed part; and an extension/contraction part supported elastically to the fixed part. A disk drive part is mounted on the fixed part, and the extension/contraction part is driven by an extension/contraction drive mechanism to extend and contract to the fixed part. First and second disk holding levers 57, 58 of a disk loading mechanism include disk holding members 57b, 58b for holding both sides in the center of an inserted recording medium, respectively, and are provided so as to move between a first position for holding the recording medium and a second position circumferentially separated from the recording medium. The respective disk holding members include: a disk circumferential abutting part for abutting a circumferential edge of the recording medium; a disk upper surface abutting part for abutting one surface of the recording medium to position a thickness direction of the recording medium; and a disk lower surface abutting part for resiliently abutting the other surface of the recording medium to press the recording medium on the disk upper surface abutting part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device that performs information processing on a disk-shaped recording medium, and in particular, an elastic disk drive device that can be made compact by reducing the size when not in use. About.

  In recent years, disk drive devices have been remarkably reduced in size due to the downsizing of disk drive mechanisms and the like. However, the disk drive device is still generally larger than the size of the disk as a recording medium to be used.

  Usually, in a disk drive device, data is recorded or reproduced while the disk is stored in a disk storage area provided in the device. Therefore, the disk drive device needs to have a disk storage area large enough to store the entire disk. Due to such restrictions, it is difficult to reduce the size beyond the disk size.

  Currently, various configurations are being considered in order to meet the demands for miniaturization, reliability and operability. For example, in Patent Document 1, a sufficient disk storage area is ensured when used, and when not in use, the casing can be made compact without being affected by the outer size of the recording medium disk to be used. A disk drive device with improved performance is disclosed. According to this disk drive device, the housing is composed of a fixed portion and an expansion / contraction portion, the expansion / contraction portion is extended / contracted with respect to the fixed portion, and the expansion / contraction portion extends to secure a disk storage area in the case. Yes. The housing has a lid for taking in and out the disc from the disc storage area, and this lid is shown to be in an open state after completion of the extending operation of the telescopic portion.

  However, in the apparatus disclosed in Patent Document 1, it is necessary to manually mount a disk on a disk drive unit that rotates and drives the disk to read and write information on the disk, and there is room for improvement in terms of operability. In addition, when attaching a lid to insert / remove a disk into / from the disk storage area, it is necessary to secure a corresponding operation area in the lid opening / closing direction in addition to the expansion / contraction direction of the expansion / contraction part. It is very difficult. At the same time, there was a difficulty in incorporation into other devices.

  Patent Document 2 discloses a disk drive device including a disk tray on which a disk is placed. The disk tray is provided so as to be movable between a pull-out position where the disk can be loaded and unloaded and a drive position where the disk can be pulled into the housing and driven. When the disc tray is pulled into the drive position, the playback unit is further raised to clamp the disc. Further, the disk drive device includes a mechanism for preventing the displacement of the reproduction unit and the jumping out of the disk tray when receiving an impact during transportation.

Patent Document 3 discloses a slot-in type optical disc apparatus. According to this apparatus, the optical disc inserted from the opening is sandwiched and transported between the upper tray and the lower tray. The upper tray and the lower tray are opened toward the inner diameter of the disk, and the lower tray is biased toward the upper tray. Thereby, it is possible to hold either a 12 cm or 8 cm optical disk.
JP 2000-187773 (paragraphs 0007-0009, FIG. 1) JP 2002-237119 A JP 2003-45108 A

  However, the disk drive devices disclosed in Patent Documents 2 and 3 require a disk tray larger than the size of the disk to be used and a space for accommodating the disk tray, and it is difficult to reduce the size exceeding the disk size. Also, when loading and unloading a disk, it is necessary to pull out the disk tray, and there is room for improvement in terms of operability.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a disk drive device that is excellent in operability and reliability and can be miniaturized.

A disk drive device according to an aspect of the present invention includes a disk drive unit that supports and rotates a disk-shaped recording medium and performs information processing on the recording medium, a fixed unit on which the disk drive unit is mounted, It is supported so as to be movable along a predetermined expansion / contraction direction between a reduced position overlapping the fixed portion and an extended position at least a part of which protrudes from the fixed portion and forms a disk storage area capable of storing the recording medium. And a front end surface provided in the extension position direction with respect to the expansion / contraction direction, and a disc insertion port provided on the front end surface for inserting and discharging the recording medium in the disc storage area along the expansion / contraction direction, , A telescopic drive mechanism for moving the telescopic part relative to the fixed part along the telescopic direction, and before being inserted through the disk insertion slot Comprising a disc loading mechanism for loading the recording medium into the disk drive unit, a
The disk loading mechanism includes a disk holding member that holds both sides of the center of the recording medium inserted from the disk insertion slot, and a first position for holding the inserted recording medium, and the disk holding member includes A first disc holding lever and a second disc holding lever, which are provided so as to be movable between a second position spaced apart from the recording medium in an outer circumferential direction and allowing rotation of the recording medium, and according to insertion of the recording medium A disk drive lever for moving the first and second disk holding levers between the first position and the second position, and each of the disk holding members abuts on an outer peripheral edge of the recording medium. A disc outer peripheral abutting portion, a disc upper surface abutting portion that abuts on one surface of the recording medium and positions the thickness direction of the recording medium, and the recording medium It has a lower disk surface abutment portion which elastically presses the contact the recording medium to the disc upper surface abutting portion, to the square surface of the

  As described above, according to the present invention, it is possible to provide a disk drive device that is excellent in operability and reliability and can be miniaturized.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 and 2 show a flat display device 1 on which a disk drive device 2 according to this embodiment is mounted. The display device 1 is mounted on a flat box-shaped external casing 1c, an image display panel 1b provided in the external casing and having a display surface exposed to a display window of the external casing, and the external casing. Disk drive device 2. The disk drive device 2 is disposed, for example, below the image display panel 1 b in the vertical direction, and is located on the front side of the display device 1.

  The front surface 2a constituting the front end surface of the disk drive device 2 is provided with a disk insertion port 3 for inserting and ejecting a disk 23 as a recording medium to be described later. When the disk drive device 2 is not used, the front surface 2a of the disk drive device and the front surface of the external housing 1c are substantially flush with each other.

  FIG. 2 shows a form in use of the disk drive device in which the disk is inserted, and the front surface 2 a of the disk drive device 2 protrudes from the front surface of the display device 1. At this time, an operation key portion 71 for setting the device to a predetermined operation state or a stop state is provided on the outer surface of the disk drive device 2 exposed by protruding.

Next, the disk drive device 2 will be described in detail.
FIGS. 3A and 3B are a plan view of the disk drive unit 4 that supports and rotates the disk 23 and reads / writes information from / to the disk when viewed from the top surface, and a main part when viewed from the left side. FIG. 4 is a sectional view of the disk drive unit 4 as seen from the front surface 2a side. FIGS. 3A and 4 show a state where the optical pickup 7 has moved to a position facing the inner circumference of the disk. The disk drive unit 4 includes a drive unit base 5 having a substantially rectangular plate shape, and a disk drive motor 6 is fixed on the drive unit base 5. The disk drive motor 6 includes a rotor, and a turntable 6a on which the disk 23 is placed is formed on the rotor. The disk 23 supported on the turntable 6 a is rotated by the disk drive motor 6.

  An optical pickup 7 is attached to the drive unit base 5. The optical pickup 7 is disposed on the disk side of the FPC cable 7b, which is a flexible cable for transmitting signals, a pickup part 7a having a laser diode (not shown), and has an extension part 7d in the disk outer peripheral direction. It has a plate-like pressing member 7c and a holder 7e for fixing them. The FPC cable 7b extends in the outer circumferential direction of the disk, and then is attached to the back surface side of the drive unit base 5 in a loop. Further, the FPC cable 7b is attached to the side surface of the drive unit base that is extended in the outer peripheral direction of the drive unit base 5 and then bent upward in the rotation direction of the disk drive motor 6. The FPC cable 7b forms a loop whose central axis extends substantially parallel to the rotational axis of the disk drive motor 6, and extends in the upper left direction in the figure.

  The optical pickup 7 is movable in an inner circumferential direction approaching the disk drive motor 6 and an outer circumferential direction away from the disk drive motor 6 by two guide shafts 8 and 9 fixed in parallel to the drive unit base 5. It is supported. The holder 7e has a pair of holding members 7f slidably engaged with the guide shaft 8 and a holding member 7g slidably engaged with the guide shaft 9, and is slidably supported by the guide shafts 8 and 9. ing.

  Both ends of the guide shaft 8 are supported on the drive unit base 5 by support members 10 and 11. Both ends of the guide shaft 9 are supported by the drive unit base 5 by support members 12 and 13. The three support members 11, 12, 13 are provided with an adjustment mechanism capable of adjusting the distance between the guide shafts 8, 9 and the drive unit base 5, and the tilt adjustment of the optical pickup 7 is performed by the adjustment.

  A rack member 14 and a spring member 15 located between the pair of holding members 7f are fixed to the holder 7e. The rack member 14 is formed with a rack 14 a positioned outside the optical pickup 7, and the rack 14 a is biased to the outside of the optical pickup 7 by a spring member 15. A stepping motor 16 is disposed outside the optical pickup 7 on the drive unit base 5. A lead screw 16 a is connected to the rotating shaft of the stepping motor 16, and the lead screw extends in parallel with the guide shaft 8. The rack 14a meshes with the lead screw 16a.

  When the stepping motor 16 rotates and the rotational force is transmitted to the rack member 14 via the lead screw 16a, the optical pickup 7 moves along the guide shafts 8 and 9 in a direction corresponding to the rotation direction of the stepping motor 16. Translated to.

  As shown in FIG. 3B, the stepping motor 16 includes a case 16d that houses a rotor, a magnet, and the like (not shown). The case 16d is formed thin. That is, the case 16d has flat side portions 16b that face each other, and arc-shaped portions that extend between the side portions 16b and face each other. The stepping motor 16 is disposed such that the side surface portion 16b of the case 16d is positioned along a direction orthogonal to the surface of the disk 23 placed on the turntable 6a. Thereby, the lead screw 16a of the stepping motor 16 can be arranged near the optical pickup 7, and the driving loss of the optical pickup 7 can be reduced. Further, the size of the disk drive unit 4 in the depth direction (left and right direction in FIG. 3B) is reduced, and the disk drive device 2 can be downsized. The soldering terminal 16c of the stepping motor 16 is provided facing the disk 23 from the case 16d, and the soldering work to the FPC becomes easy.

  FIG.3 (c) has shown another form. According to this embodiment, the flat side surface portion 16b of the stepping motor 16 is positioned along a direction slightly inclined from the direction orthogonal to the surface of the disk 23 placed on the turntable 6a. Even in such a configuration, substantially the same effect as described above can be obtained.

  The motor FPC cable 70 is connected to the disk drive motor 6 and the stepping motor 16 and is attached to the side surface of the drive unit base 5 that is bent upward in the rotational axis direction of the disk drive motor 6. The motor FPC cable 70 is extended in the left direction in FIG. 3A by forming a loop whose center extends substantially in parallel with the rotating shaft of the disk drive motor 6.

  As shown in FIG. 4, in a state where the disk 23 is loaded on the turntable 6 a, the disk driving unit 4 is clamped by sandwiching the disk 23 between the clamp member 18. The optical pickup 7 faces the signal recording surface of the disk 23. The FPC cable 7b is attached to the back side of the drive unit base 5 in a loop after being extended in the disk outer peripheral direction. Further, the extension portion 7d of the pressing member 7c disposed in the optical pickup 7 suppresses the displacement of the FPC cable 7b in the disk direction and prevents the FPC cable 7b from contacting the disk 23.

  As shown in FIGS. 3 and 4, dampers 17 are attached to substantially four corners of the drive unit base 5, and each damper 17 is attached to a damper base 22 provided on the lower surface side of the drive unit base 5 with screws 21. It is attached.

  FIG. 5 shows a state in which the disk drive unit 4 is viewed from the back side. As shown in FIGS. 4 and 5, a leaf spring 22i is attached to the attachment portion 22j of the damper base 22, and bosses 22a and 22d are fixed to the leaf spring 22i. These bosses 22a and 22d engage with a cam slider 47, which will be described later, and move the disk drive unit 4. The leaf spring 22i is elastic and can displace the height positions of the contact portions 22f, 22g, and 22h provided on the damper base 22 with respect to the bosses 22a and 22d.

  6A shows a cross-sectional view of the disk drive device 2 as viewed from the front surface 2a side, and FIG. 6B is a partially enlarged view of FIG. 6A. As will be described later, the disk drive device 2 includes a disk drive unit 4 and other drive mechanisms mounted thereon and fixed to the external housing 1c of the display device 1, and is movable relative to the fixed unit. A telescopic part 35 that is supported so as to be stretchable.

  The fixing portion includes a base body 24, base guides 25 and 26, and a base top 55, and is formed in a substantially rectangular tube shape. The fixing portion functions as a mounting base that directly or indirectly supports various components. On the lower surface of the base body 24, a main base 39 constituting a control unit for controlling the operation of the entire apparatus is disposed. A base cover 40 is disposed on the lower surface of the main base 39 and is fixed to the base body 24. The base cover 40 is attached to the external housing 1 c of the display device 1.

  The base body 24 includes a substantially flat rectangular plate-like reference surface 24a, and left and right bent portions 24b and 24c that are provided on the left and right edges of the reference surface 24a to form side walls. A base top 55 is attached to the upper portions of the left and right bent portions 24b and 24c and faces the reference surface 24a. Base guides 25 and 26 are fixed to the outer surfaces of the bent portions 24b and 24c, respectively. Slider guides 27 and 28 are attached to the outside of the base guides 25 and 26, respectively. Front top guides 30 and 31 constituting a part of the expansion / contraction part are attached to the outside of the slider guides 27 and 28, respectively. The base top 55 is provided with a disk loading mechanism for holding the disk 23 and a clamp member driving mechanism, which will be described later. A cam slider 47 as a cam member is disposed on the upper surface of the reference surface 24 a of the base body 24, and the disk drive unit 4 is movably attached to the upper surface of the cam slider 47. A left arm 32 and a right arm 33, which will be described later, are provided on the back surface of the reference surface 24a.

  7A, 7B, and 7C are a plan view, a right side view, and a bottom view of the stretchable portion 35, respectively. As shown in FIGS. 6 and 7A, 7B, and 7C, the stretchable portion 35 includes a front top 29 that covers the top surface, side surface, and part of the back surface of the fixed portion, and the bottom surface of the fixed portion. It has a front bottom 34 that covers it and a front panel 36 that covers the front surface of the fixed part, and these are fixed to each other with screws 37 from the top and back surfaces. Thereby, the expansion-contraction part 35 is formed in the flat rectangular box shape which the rear surface opened. The front panel 36 is formed with a disc insertion slot 3 into which the disc 23 is inserted and ejected.

  The front top guides 30 and 31 are fixed to the front top 29. The slider guides 27 and 28 and the front top guides 30 and 31 are supported by base guides 25 and 26, which are fixed portions, so as to be slidable in the front direction of the disk drive device 2, respectively. The slider guides 27 and 28, the front top guides 30 and 31, and the base guides 25 and 26 constitute a slide support mechanism.

  As shown in FIGS. 6A and 6B and FIGS. 7A, 7B, and 7C, an operation key portion 71 is provided on the upper surface of the front top 29, and the disk drive device 2 is set in a predetermined manner. It is possible to set to the operating state or the stopped state. The operation key unit 71 includes an operation key base 71a fixed to a recess 29c formed on the upper surface of the front top 29, a plurality of switch parts 71b mounted on the operation key base, a recess 29c, and an operation key base 71a. Mounting base 71d that fills the gap, and a switch cover 71c that covers them. The front top 29 is formed with a notch 29e in which a recess 29c and a part of the upper surface portion 29d are notched. In the region where the notch 29e is provided, a gap between the front top 29 and the base top 55 can be made large. Parts that require thickness, such as parts facing the base top 55, such as the cam part 29b provided on the back surface of the upper surface part 29d of the front top 29, are arranged outside the movement range of the concave part 29c. Thereby, the thickness of the whole apparatus can be made thin.

  The upper end of the front top 29 and the rear edge of the side surface are bent at a substantially right angle toward the outside to form a front top bent portion 29a. The front top bent portion 29a can increase the strength of the front top 29 and can prevent dust and dust from entering the drive device beyond the upper surface of the front top 29.

  Grooves 34a and 34b extending in the left-right direction in FIG. 7C are formed on the back surface of the front bottom 34, respectively. Further, a cable 71e for transmitting a signal of the operation key base 71a extends from the telescopic portion 35 in the direction of the rear surface 2b of the disk drive device 2.

  FIG. 8 is a right side view showing a state in which the extendable part 35 has moved to the reduced position, covers the fixed part, and is housed in the external housing 1 c of the display device 1. A cable 71e for transmitting the operation key signal and a signal cable to be described later are connected to the main board 39 from the rear surface side of the disk drive device 2.

  FIG. 9 is a right side view illustrating a state in which the expansion / contraction part 35 extends and moves to the extended position and protrudes from the front surface of the external housing 1 c of the display device 1. The slider guide 28 engaged with the base guide 26 slides about half of the length along the extension direction A, and the expansion / contraction part 35 slides almost the entire length in the extension direction. At this time, the operation key portion 71 of the front top 29 that is not exposed to the outside in the reduced state is exposed to the outside when the extendable portion 35 is extended, and the disk drive device 2 can be operated from the outside.

  In the state shown in FIG. 9, the disk 23 inserted from the insertion opening of the expansion / contraction part 35 located at the contracted position shown in FIG. 8 moves by a predetermined amount in the downward direction of the disk rotation axis for mounting on the disk drive unit 4. However, the expansion / contraction part 35 is not moved in the extending direction A.

  Next, the drive system of the disk drive device 2 will be described. 10, FIG. 12 (a), and FIG. 12 (b) show the main part of the drive part provided in the base body 24 of the fixed part. 10 shows a standby state in which the expansion / contraction part 35 is reduced and the disk can be inserted, FIG. 12A shows a standby state after the disk is inserted, and FIG. 12B shows the disk 23 and FIG. A state in which the disk drive unit 4 is mounted is shown.

  A mode motor 42 screwed to a bracket motor 72 is attached to the base body 24, and a worm 43 is attached to a rotating shaft of the mode motor 42 via a connector 73. The worm 43, the gear 44, the gear 45, and the gear 46 are in mesh with each other. A plate-like cam slider 47 is provided on the base body 24. The cam slider 47 has a rack portion 47a that meshes with the gear 46, cam portions 47b, 47c, 47d, and 47e, and gear portions 47f and 47g that drive a lever and the like described later. The cam slider 47 is movable in the left-right direction in FIGS. 10 and 12 when the boss portion 24e and the groove portion 24f provided on the base body 24 engage with the groove portion 47j and the boss portion 47l of the cam slider 47, respectively. ing. When the gear 46 is rotationally driven by the mode motor 42, the cam slider 47 is driven in the left-right direction in the drawing to drive a lever or the like.

  A switch base 48 is provided on the base body 24. A mode switch 49 and a disk detection switch 50 are mounted on the switch board 48, and a cable 51 of the mode motor 42 is connected thereto. The disk detection switch 50 constituting the detection unit detects this when the disk 23 is inserted at a predetermined position, and performs a switching operation. The switch base 48 is connected to the main base 39 on the lower surface of the base body 24 by the FFC cable 52.

  On the base body 24, a switch lever 53 and a first disk drive lever 54 are provided so as to be rotatable around rotation centers 53a and 54a, respectively. The mode switch 49 is turned on and off by turning around the turning center 53a of the switch lever 53, and the disk detection switch 50 is turned on the turning center 54a of the first disk drive lever 54 that functions as a medium detecting member. Turn on and off by turning around. In the switch lever 53 and the first disk drive lever 54, pins 53b and 54b provided on the lever are engaged with cam portions 47c and 47b of the cam slider 47, respectively. As the cam slider 47 moves, the switch lever 53 and the first disk drive lever 54 rotate to switch the mode switch 49 and the disk detection switch 50 on and off.

  Further, the switch lever 53 drives a disk holder 74 described later by rotating. The first disk drive lever 54 has a boss 54c provided on the opposite side of the pin 54b across the rotation center 54a. As will be described later, the boss 54c engages with levers of a disk loading mechanism disposed on the base top 55 of the fixed portion. The first disk drive lever 54 is rotated by the insertion of the disk 23 and switches the disk detection switch 50 from OFF to ON.

  The cam portion 47b of the cam slider 47 engaged with the pin 54b of the first disk drive lever 54 that functions as an engaging portion is formed wide. Therefore, the first disk drive lever 54 can be rotated in a state where the cam slider 47 is positioned at the initial position, and the disk detection switch 50 shown in FIG. 10 and the disk detection switch 50 shown in FIG. 10 are turned off. It is possible to move to This is a configuration for switching the disc detection switch 50 from OFF to ON by inserting a disc, which will be described later. The first disk drive lever 54 is rotated by the movement of the cam slider 47, and the disk detection switch 50 is switched from on to off when the disk is ejected.

  The boss 22a of the damper base 22 shown in FIG. 4 is engaged with the cam portion 47d of the cam slider 47 and the guide portion 24g of the base body 24, as shown in FIGS. The boss 22 d of the damper base 22 is engaged with the cam portion 47 e of the cam slider 47. The bosses 22a and 22d protrude beyond the lower surface of the base body 24, and a lumirror 22b is attached to the front end thereof. In this state, the leaf spring 22i is bent and urges the damper base 22 toward the reference surface 24a side of the base body 24. In the contracted state of the expansion / contraction part 35, that is, in the standby state, the disk drive unit 4 is housed in the base body 24.

  The guide portion 24g of the base body 24 is constituted by a groove extending in the same direction as the extending direction A of the stretchable portion 35 which is the vertical direction of FIG. As the cam slider 47 moves in the right direction, the boss 22a starts moving in the same direction as the extending direction A along the cam shape of the cam portion 47d. The boss 22d moves along the cam shape of the cam portion 47e. As described above, the disk drive unit drive mechanism is configured by the mode motor 42, the worm 43 that transmits the rotation of the mode motor 42, the gears 44 to 46, and the cam slider 47, and the disk drive unit 4 is configured by the disk drive unit drive mechanism. The disk drive device 2 is moved in the direction of the front surface 2a.

  On the lower surface of the reference surface 24a of the base body 24, a left arm 32 and a right arm 33 are provided as arm portions for controlling expansion and contraction of the expansion and contraction portion 35. The left arm 32 and the right arm 33 have rotation center portions 32a and 33a supported by the base body 24 at the base end portions, respectively. Some bosses 32b and 33b are projected. The bosses 32b and 33b protrude in a direction away from the reference surface 24a and engage with grooves 34a and 34b formed in the front bottom 34 of the extendable portion 35 shown in FIG. 7C, respectively. The grooves 34a and 34b extend in a direction orthogonal to the expansion / contraction direction A. The left arm 32 and the right arm 33 are respectively formed with gear portions 32c and 33c protruding toward the reference surface 24a, and the gear portions 32c and 33c can be engaged with the gear portions 47f and 47g of the cam slider 47, respectively. ing.

  In the contracted state shown in FIG. 12, the bosses 32b and 33b are located on the rear end side of the base body 24 with respect to the rotation center portions 32a and 33a of the left arm 32 and the right arm 33, and the extendable portion 35 is set to the contracted position. It is moved.

  When the cam slider 47 is moved rightward from the contracted state shown in FIG. 12, the gear portions 32c and 33c are engaged with and driven by the gear portions 47f and 47g. As a result, as shown in FIG. 13, the left arm 32 is rotated counterclockwise and the right arm 33 is rotated clockwise, and the telescopic part 35 is driven by the left arm and right arm to move in the extending direction A. Transition to the expanded state. The left arm 32, the right arm 33, and the cam slider 47 that drives them constitute an expansion / contraction drive unit, and the mode motor 42, the worm 43 that transmits the rotation of the mode motor 42, the gears 44 to 46, and the expansion / contraction drive unit. A drive mechanism is configured.

  As shown in FIG. 12, in the standby state, the FPC cable 7b of the optical pickup 7 is affixed to the side surface of the drive unit base 5, and forms a loop whose central axis is substantially parallel to the rotation axis of the disk drive motor 6, After being extended in the upper left direction in the figure, it is connected to a main base 39 disposed on the lower surface of the base body 24. The motor FPC cable 70 is affixed to the side surface of the drive unit base 5 and forms a loop whose central axis is substantially parallel to the rotation axis of the disk drive motor 6 and is extended in the left direction in the figure. 24 is connected to a main base 39 disposed on the lower surface of the main body 24.

  FIG. 11 is a timing chart showing the transition of the operation state of the apparatus accompanying the movement of the cam slider 47. As shown in FIG. 12, when the cam slider 47 moves rightward from the standby state in which the disk 23 can be inserted, the disk clamp state is entered. The cam portion 47b of the cam slider 47 that controls the first disk drive lever 54 forms a wide cam groove while the telescopic portion 35 is extended. If the disk 23 is displaced in the extending direction A of the expansion / contraction part 35 during the expansion operation of the expansion / contraction part 35, a first back disk lever 59 described later rotates, and this rotation is performed by the second disk drive lever 60, the first disk. The signal is transmitted to the drive lever 54, and the disk detection switch 50 changes from on to off. As a result, the control unit stops the expansion of the expansion / contraction unit 35 and shifts to the disk ejection mode in order to prevent a clamping error of the disk 23 to the disk drive unit 4.

  Due to the transition to the clamp state, the first disk drive lever 54 shifts from the disk hold state to the disk off state. In the transition from the standby state to the clamped state, the expansion / contraction part 35 changes to the extended state, and the disk drive unit 4 moves in the extension direction A of the expansion / contraction part 35 to rotate the rotation center of the disk drive motor 6 and the disk 23. Align the center.

  When the disc 23 is ejected from the clamped state, it shifts to the ejected state. This is performed by moving the cam slider 47 in the left direction. The first disk drive lever 54, the expansion / contraction section 35, and the disk drive section 4 perform an operation opposite to the transition from the standby state to the clamp state. At this time, the cam slider 47 ejects a predetermined amount of the disc in the extending direction of the telescopic portion 35 when the standby state is shifted to the ejecting state. This facilitates removal of the disk 23. Further, the state shifts from the eject state to the standby state for the next disk insertion.

  The mode switch 49 is in the off state in the standby state, and is in the on state before the clamp state. As a result, the mode motor 42 is braked and stopped in a clamped state. When the disc 23 is ejected, the mode switch 49 changes from the off state to the on state during the transition from the standby state to the eject state. As a result, the mode motor 42 is braked after a certain period of time, temporarily stops in the ejected state, and immediately goes to the standby state. At this time, since the state is changed from on to off, the mode motor 42 is braked and stopped in the standby state.

  FIG. 13A is a plan view showing a drive unit on the base body 24, showing a clamped state in which the expansion / contraction part 35 is extended and recording / reproduction of the disc is possible, and FIG. ) Shows a state in which the disk and the disk drive unit 4 are mounted.

  The switch lever 53 engages with the cam portion 47c of the cam slider 47, and the mode switch 49 is kept on. The first disk drive lever 54 has shifted from a disk hold state to be described later to a disk off state.

  The disk drive unit 4 moves and rotates the expansion / contraction part 35 in the extending direction A, and the disk drive motor 6 is located at the center of rotation in the left-right direction of the disk drive device 2 by a predetermined amount. 23 is aligned with the center of rotation. The position of the disk 23 for switching the disk detection switch 50 when manually inserted is substantially the same as the position where the disk 23 is mounted on the disk drive unit 4.

  On the reference surface 24a of the base body 24, a convex cam portion 24m as a fixed portion protrudes at a predetermined height, and a convex cam portion 24o is formed at a predetermined height in the bent portion on the near side of the base body 24. Tapered portions 24l and 24n extending from the convex cam portions 24m and 24o so as to gently fall in the direction of the reference surface 24a are formed at positions clockwise relative to the boss 22a of the damper base 22. In the operation position shown in FIG. 12B, the disk drive unit 4 does not come into contact with the convex cam portions 24m and 24o, but the disk drive unit 4 is moved to the operation position shown in FIG. The boss 22a is rotated counterclockwise. Then, the contact portions 22f and 22g of the damper base 22 shown in FIG. 5 are lifted by the taper portions 24l and 24n, respectively, and ride on the convex cam portions 24m and 24o, respectively.

  Further, as shown in FIG. 6, the cam slider 47 is formed with a convex cam portion 47i projecting to a predetermined height, and in the right direction in the figure of the convex cam portion, the base body 24 extends from the convex cam portion 47i. A tapered portion 47h that gently falls in the direction of the reference surface 24a is formed. In the operation state of FIG. 12B, the disk drive unit 4 does not come into contact with the convex cam portion 47i, but due to the shift to the operation position shown in FIG. 13B, the contact portion 22h of the damper base 22 becomes a tapered portion. It is lifted along 47h and rides on the convex cam portion 47i. As a result, the disk drive unit 4 is moved in the axial direction of the disk toward the disk 23 only in the clamped state, and when the disk is inserted into the disk drive motor 6 and the turntable 6a of the disk drive motor 6 is mounted. Reduce the disc height difference. Therefore, the reliability of the clamping and unclamping operations of the disk 23 is improved.

  A positioning device for the disk drive unit 4 will be described. The disk drive unit 4 is moved by moving the cam slider 47 rightward from the initial position and driving the bosses 22a and 22b of the damper base 22 along the cam shapes of the cam portions 47d and 47e of the cam slider 47. Done. The base body 24 is formed with a locking portion 24h. In the clamped position in FIG. 13, the locking portion 22k at the end of the damper base 22 is pressed against the locking portion 24h due to the cam shape of the cam portions 47d and 47e of the cam slider 47. At this time, the leaf spring 22i of the damper base 22 functions as an urging member. Further, the cam slider 47 is formed with the hook-shaped positioning angle portion 47k shown in FIG. 6, and in the clamped position shown in FIG. 13, the positioning hole 22l formed in the damper base 22 is engaged with the positioning angle portion 47k. Match. Thereby, the disk drive part 4 is positioned by the latching | locking part 24h of the base body 24, and the positioning corner | angular part 47k of the cam slider 47, and is improving the position accuracy and the vibration proofing effect of the turntable 6a.

  As shown in FIGS. 13 (a) and 13 (b), the left arm 32 and the right arm 33 arranged on the lower surface of the reference surface 24a of the base body 24 are each rotated approximately 180 degrees from the initial position. . At this time, the bosses 32 b and 33 b are located in the front direction, that is, on the front side of the display device 1 with respect to the rotation center portions 32 a and 33 a of the left arm 32 and the right arm 33. Thereby, the expansion-contraction part 35 is in the extended state.

  In the clamped state, the FPC cable 7b of the optical pickup 7 is affixed to the side surface of the drive unit base 5, wound around the side surface of the drive unit base 5, and then a loop is formed to the left in FIG. 13 (b). It has been extended. Further, the FPC cable 7 b is connected to a main base 39 disposed on the lower surface of the base body 24. The motor FPC cable 70 is attached to the side surface of the drive unit base 5 and the loop is opened. The motor FPC cable 70 is extended in the upward direction in FIG. 13B and then connected to the main base 39 disposed on the lower surface of the base body 24. As described above, the FPC cable 7b and the motor FPC cable 70 form a loop whose center axis is substantially parallel to the rotation axis of the disk drive motor 6 in the entire region where the disk drive unit 4 moves between the standby state and the clamped state. Further, the disk drive unit 4 moves in a plane substantially parallel to the plane in which the disk drive unit 4 moves.

  FIGS. 15A and 15B are cross-sectional views of the main part when the standby state of FIG. 12 and the clamped state of FIG. 13 are viewed from the right. In the standby state of FIG. 15A, the mounting surface of the turntable 6 a of the disk drive unit 4 is parallel to the reference surface 24 a of the base body 24. On the other hand, in the clamped state of FIG. 15B, the mounting surface of the turntable 6a is moved in the direction of the disk 23. Further, the disk drive unit 4 rides on the convex cam portions 24m and 24o of the base body 24 and the convex cam portion 47i of the cam slider 47, so that the front surface 2a side of the disk drive device 2 becomes higher. A predetermined angle B is inclined with respect to the surface 24a. In this way, the motor FPC cable 70 and the FPC cable 7b of the optical pickup 7 are twisted by tilting the mounting surface of the turntable 6a in the clamped state with respect to the mounting surface of the turntable 6a in the standby state. It can be reduced and damage to the cable can be prevented. Further, it is possible to secure a gap between the disk detection stopper 63 provided on the upper surface on the rear surface 2b side of the disk drive device 2 and the disk 23.

  14 (a) and 14 (b) are plan views respectively showing the drive unit on the base body 24, and FIG. 14 (a) shows an ejected state in which the expansion / contraction part 35 has moved to the contracted position. FIG. 14A shows a state where the disk and the disk drive unit 4 are mounted in FIG.

  The cam slider 47 is moved from the clamped state to the eject position in the left direction. The switch lever 53 is engaged with the cam portion 47 c of the cam slider 47, and the mode switch 49 is kept on by the switch lever 53. The first disk drive lever 54 has shifted from a disk hold state, which will be described later, to a disk eject state. At this time, the first disk drive lever 54 is separated from the disk detection switch 50, and the disk detection switch 50 is off. After the transition to the standby state, the next disc can be inserted. The disk drive unit 4 moves in the shrinking direction of the telescopic unit 35 and is stored in the base body 24.

  Along with the movement of the cam slider 47, the left arm 32 and the right arm 33 are each rotated approximately 180 degrees in the opposite direction from the clamped state to the standby state. The bosses 32b and 33b are positioned on the rear end side of the fixed portion with respect to the rotation center portions 32a and 33a of the left arm 32 and the right arm 33. The expansion / contraction part 35 is moved in the reduction direction by the left arm 32 and the right arm 33 and is located in the reduced state.

  Next, a structure for holding the disk during the operation of the expansion / contraction part 35 will be described. FIG. 17 shows a switching state of the disc holder 74 by the switch lever 53. The switch lever 53 has a cam portion 53d on the rear surface 2b side of the disk drive device 2 with respect to the rotation center 53a. As shown in FIG. 17, the switch lever 53 has three angular positions of a standby angle position, a disk holder on-angle position, and a mode switch on-angle position, as shown in FIG. Set the state. 17A and 17B show the standby angle position, FIGS. 17C and 17D show the disc holder on-angle position, and FIGS. 17E and 17F show the mode switch on-angle position, respectively. . FIGS. 17B, 17D, and 17F are side views showing the main part viewed from the rear surface 2b side of the disk drive device 2. FIG. The cam slider 47 and the switch lever 53 constitute a holder driving mechanism that drives the disc holder 74.

  The disk holder 74 is located between the disk 23 and the switch lever 53 and has bosses 74a and 74b. As shown in FIG. 10, the bosses 74a and 74b are engaged with the grooves 72a and 72b of the bracket motor 72, respectively. The grooves 72a and 72b of the bracket motor 72 are formed in a long groove shape, and the bosses 74a and 74b of the disk holder 74 are movable along the grooves 72a and 72b in the rotational axis direction of the disk 23 by a predetermined amount. A cam 74 c is formed on the disc holder 74 and faces the cam portion 53 d of the switch lever 53. Further, the disc holder 74 is formed with a disc clamping portion 74d and a guide portion 74e. A rubber member having a high friction coefficient is fixed to the disk holding portion 74d to hold the disk 23.

  As shown in FIGS. 17A and 17B, at the standby angle position of the switch lever 53, the disc holder 74 is held at the standby position, and the stopper portion 74f of the disc holder 74 is stopped by the stopper of the disc drive portion 4 (not shown). The guide part 74e is disposed close to the disk 23 to be inserted. The guide part 74e guides the disk 23 when the disk is inserted. The disc holding portion 74d is disposed with a gap from the guide portion 74e so as not to hit the disc when the disc is inserted.

  FIGS. 17C and 17D show a state where the expansion / contraction part 35 is moving during the transition from the standby state to the clamp state. During this time, the switch lever 53 rotates to the disk holder on-angle position, and the disk holder 74 is moved to the hold position. The switch lever 53 rotates clockwise from the standby angle position shown in FIG. 17A to the disk holder on-angle position, and this rotation causes the cam portion 53d of the switch lever 53 to move the disk holding portion 74d toward the disk 23. It is pushed in. As a result, the bosses 74 a and 74 b of the disc holder 74 abut on the disc side end portions 74 d and 74 e of the grooves 72 a and 72 b of the bracket motor 72, and the disc clamping portion 74 d abuts on the disc 23. The disk 23 is sandwiched and held from both sides by the disk abutting portion 55c of the base top 55 and the disk holding portion 74d. Therefore, the displacement of the inserted disk 23 is prevented during the operation of the expansion / contraction part 35. At this time, as shown in FIG. 26 (d), the contact surface of the disk holding portion 74 d is formed so as to be inclined away from the disk 23 toward the inner circumferential direction of the disk, and the disk holding portion 74 d is formed on the outer periphery of the disk 23. It abuts only on the part, and abuts only on the outer periphery.

  As shown in FIGS. 17E and 17F, in the clamped state, the switch lever 53 rotates counterclockwise from the standby angle position to the mode switch on angle position. By this rotation, the cam portion 53d of the switch lever 53 releases the pushing of the disc holding portion 74d in the direction of the disc 23, and the disc drive portion 4 moves, whereby the stopper portion 74f of the disc holder 74 is not shown. 4 away from the stopper contact portion. As a result, the disc holder 74 is moved to the on position and is greatly separated from the disc 23. As shown in FIG. 10, a spring member 74 g is attached to the disc holder 74. One end of the spring member 74g abuts against the base top 55, so that the disc holder 74 is lightly biased in the direction away from the disc 23, and as shown in FIG. Hold on.

  As described above, the disk 23 is held in the direction of the disk rotation axis by the disk holder 74 during the operation of the expansion / contraction part 35, thereby preventing the inserted disk from being displaced while the expansion / contraction part 35 is extended. Further, it is possible to reduce the clamping error of the disk 23. In the clamped state, the disc holder 74 can be retracted from the disc 23 to ensure a gap with the rotating disc.

  16A and 16B are a plan view and a cross-sectional view showing the worm 43 and the gear 44 of the drive unit. The gear 44 includes a large gear 44 a that engages with the worm 43, a small gear 44 b that engages with the large gear of the gear 45, and an urging spring 44 c. The large gear 44a and the small gear 44b are concentric and turnable, and constitute a clutch mechanism by the pressing force of the urging spring 44c. The clutch force is set to a predetermined value that exceeds the normal load of the drive unit. Here, if a large external force is applied to the expansion / contraction part 35 from the outside during the operation of the expansion / contraction part 35, a large force is applied to the expansion / contraction drive mechanism, particularly the left arm 32 and the right arm 33 of the expansion / contraction drive part. However, the external force as described above can be released by the clutch mechanism of the gear 44, and damage to the telescopic drive mechanism can be prevented.

  The expansion / contraction operation of the expansion / contraction part 35 shown in FIGS. 12 to 14 described above sets the standby state when the disk drive device 2 is not used, and the expansion / contraction part 35 is held in the contracted position covering the fixed part. The depth dimension of the disk drive device 2 can be reduced. During operation of the disk drive device 2, a clamped state is set, the expansion / contraction part 35 extends to secure the accommodation part of the disk 23, and the disk drive part 4 moves to the drive position, thereby reading information from the disk 23. And writing becomes possible. When the disc is ejected, an operation reverse to the extending operation of the expansion / contraction unit 35 is performed, and the disc is ejected by returning to the standby state after passing through the ejection state beyond the standby state. As described above, with respect to the expansion / contraction direction A of the expansion / contraction part 35, the clamp state is arranged in one direction with respect to the standby state, and the ejection state is arranged in the other direction.

  Next, a notification device for inserting a disc will be described. When the disk 23 is inserted into the disk drive device 2 from the disk insertion port 3, the expansion / contraction part 35 extends to cover the disk. At this time, the expansion / contraction part 35 may hit the hand that inserts the disk 23, giving the operator a sense of discomfort. Therefore, as shown in FIG. 32, the disk drive device 2 includes a sound generating device that functions as a notification device, for example, a speaker 80, and a light emitting device, for example, an LED or a notification lamp 82, which are the main units as a control unit. It is connected to the base 39 via drivers 84a and 84b. As the speaker 80, a speaker provided independently of the disk drive device 2 or a speaker of the display device 1 on which the disk drive device is mounted can be used. The notification lamp 82 is provided on the entire surface of the disk drive device 2, for example. As the notification device, the image display panel 1b of the display device 1 may be used.

  When the disc detection switch 50 is turned on by inserting the disc 23, the main board 39 operates the speaker 80 to generate a notification sound. Sound can also be generated by operating the speaker of the display device 1. Further, the main board 39 may notify the operator by turning on the notification lamp 82 by the operation of the disk detection switch 50 by inserting the disk. Alternatively, a display indicating that the disk 23 has been inserted may be performed on the display panel 1b of the display device 1. As a result, the operator can be notified of the disc insertion by voice or display, and the operational feeling can be improved and the danger can be prevented when the extendable portion 35 comes out to the extended position.

  Next, a runaway prevention device for the telescopic portion 35 will be described. As shown in FIGS. 10 and 12, the cam portion 47b of the cam slider 47 provided on the base body 24 has a lock portion 47m formed of a stepped portion. FIG. 10 shows a state in which the disk 23 is not inserted, and the first disk drive lever 54 is located at the standby position (first position) shown in the figure. At this time, the pin 54b of the first disk drive lever 54 is in a position where it can engage with the lock portion 47m, and restricts the movement of the cam slider 47 in the right direction in the figure. On the other hand, FIG. 12 shows a state in which the disc 23 is inserted, and the first disc drive lever 54 is rotated clockwise via a disc loading mechanism described later, and is located at the detection position shown in the drawing. Further, the pin 54b moves in the cam portion 47b and is located at a release position that is disengaged from the lock portion 47m. Thereby, the cam slider 47 is unlocked by the pin 54b, and is allowed to move in the right direction in the figure.

  As described above, only when the disk 23 is inserted, the cam slider 47 can move in the right direction, and the extendable portion 35 can be extended. From this, it is possible to prevent the cam slider 47 from inadvertently moving and extending / contracting the extension part 35 without inserting a disk due to a malfunction or vibration of the control system of the mode motor 42, thereby improving reliability. Can be planned.

  Next, a disk loading mechanism for mounting the disk 23 to the disk drive unit 4 will be described. FIG. 18A shows a disk loading mechanism and a clamp member drive mechanism provided on a base top 55 located on the upper part of the base body 24, and FIG. 18B shows the essential components in the state of FIG. Shows the part. The base top 55 is formed in a substantially flat plate shape having substantially the same dimensions as the reference surface 24 a of the base body 24. The base top 55 is fixed to the upper portions of the left and right bent portions 24b and 24c of the base body 24 by the base guides 25 and 26 shown in FIG. 6, and faces the reference surface 24a substantially in parallel.

  The disk loading mechanism includes a left disk holding lever 57 and a right disk holding lever 58 that hold the disk 23 inserted from the disk insertion port 3 of the extendable portion 35. The left disc holding lever 57 has a rotation center portion 57 a supported on the base top 55 and a disc holding portion 57 b located on the front surface 2 a side of the disc drive device 2. On the left disc holding lever 57, pins 57c and 57d are fixed.

  The right disc holding lever 58 forms a rotation center portion 58 a supported on the base top 55 and a disc holding portion 58 b located on the front surface 2 a side of the disc drive device 2. A cam groove 58c is formed in the right disk holding lever 58, and a pin 57d of the left disk holding lever 57 is always engaged with the cam groove 58c. Thereby, the disc holding portion 57b of the left disc holding lever 57 and the disc holding portion 58b of the right disc holding lever 58 operate substantially in the left and right direction with respect to the central portion of the base top 55.

  The back disk lever 59 for detecting the inserted disk 23 is composed of a first back disk lever 64 that functions as a first disk detection lever and a second back disk lever 65 that functions as a second disk detection lever. . The first back disk lever 64 has a rotation center part 64a rotatably supported on the right disk holding lever 58, and a pin 64c formed at the right end part in the drawing. The second back disc lever 65 has a turning center portion 65 a rotatably supported on the left end portion of the first back disc lever 64, and can turn with respect to the first back disc lever 64. ing.

  The second disk drive lever 60 includes a rotation center 60a supported on the base top 55, a groove 60b that engages with the boss 54c of the first disk drive lever 54 shown in FIG. Cam groove 60c for driving the pin 57c, and a groove portion 60d for engaging with the pin 64c of the back disc lever 59.

  A tension spring 62 is installed between the left disc holding lever 57 and the second disc drive lever 60. By this tension spring 62, the left disc holding lever 57, the right disc holding lever 58, and the second back disc lever 64 are respectively brought into contact with the disc contact portions (first abutment disc) of the disc holding portions 57b, 58b and the second back disc lever 64. (Contact portion) 65b is biased so as to rotate in a substantially central direction of the disk 23 to be inserted. The left disc holding lever 57, right disc holding lever 58, back disc lever 59, second disc drive lever 60, and tension spring 62 constitute a disc loading mechanism. The disk loading mechanism constitutes a disk detection mechanism together with the first disk drive lever 54 and the disk detection switch 50.

  The second disk drive lever 60 biases the lever main body 60q, the small lever 60f having the rotation center 60g supported on the lever main body 60q, and the lever main body 60q and the small lever 60f to the stop 60i. And a spring member 60h to be applied. The lever main body 60q, the small lever 60f, and the spring member 60h operate as a unit during normal operation.

  FIG. 18 shows a standby state in which a disk can be inserted. When the disc 23 having a diameter of 12 cm, which is the second diameter, is inserted, the disc holding portions 57b and 58b and the disc abutment portion 65b of the second back disc lever 65 are pushed by the outer peripheral edge of the disc 23 and become movable. It has become. 24A shows the disk holding portion 57b of the left disk holding lever 57, and FIG. 24B is a side view of the disk holding portion as viewed from the front surface 2a direction of the disk drive device 2. FIG. The disc holding portion 57b of the left disc holding lever 57 has a disc outer peripheral abutment portion 57e that abuts on the outer peripheral edge of the disc 23, and a taper portion 57g. The taper portion 57g lifts the disc lowered by a predetermined amount from the clamped state sandwiched by the disc drive motor 6 to the disc outer peripheral contact portion 57e.

  Further, the disk holding portion 57b includes a left detection lever 57i that is a disk detection member and a spring 57o that is a spring member. The left detection lever 57i includes a rotation center portion 57j that is rotatably supported at the tip of the left disc holding lever 57, a disk contact portion 57k that contacts the outer peripheral edge of the disk 23, and a second locking portion 57l. And have. The left detection lever 57i is biased by a spring 57o so that the disk contact portion 57k rotates counterclockwise toward the disk center. Thus, in the state shown in FIG. 24A, the second locking portion 571 is located at the restriction position engaged with the first locking portion 55d of the base top 55, and is a first diameter, here a small-diameter disk. When a disc having a diameter of 8 cm is inserted, the rotation of the left disc holding lever 57 is locked. FIG. 24C shows a state in which the disk 23 having a diameter of 12 cm starts to be inserted. At this time, the outer peripheral edge of the disc 23 comes into contact with the disc contact portion 57k of the left detection lever 57i, and the left detection lever 57i rotates clockwise and moves to the release position. As a result, the second locking portion 57l is disengaged from the first locking portion 55d of the base top 55, and the left disc holding lever 57 can be rotated clockwise. Therefore, it becomes possible to insert the disk 23 having a diameter of 12 cm. The disc holding portion 58b of the right disc holding lever 58 operates substantially in the left and right direction with respect to the disc holding portion 57b of the left disc holding lever 57 with respect to the center portion of the base top 55.

  The base top 55 is provided with a disk detection stopper 63 for preventing excessive insertion of the disk. FIG. 25 is a cross-sectional view of the main part when viewed from the right side surface direction of FIG. 18B, and shows two states of the disk detection stopper 63. FIG. 25A shows the state of the disc detection stopper 63 when a small-diameter disc 23 b having a diameter of 8 cm is inserted, and the tip end portion 63 f of the stopper is in contact with the base top 55. The outer peripheral edge of the inserted small-diameter disk 23b comes into contact with the second back disk lever 65, and the second back disk lever 65 comes into contact with the second locking portion 63d of the disk detection stopper 63 at a predetermined position for inserting the disk. It will be in the state of FIG.

  FIG. 25B shows a state of the disc detection stopper 63 during the insertion of the disc 23 having a diameter of 12 cm. The outer peripheral edge of the disk is in contact with the second back disk lever 65 by the insertion of the disk 23. At this time, when the disc 23 is inserted, the left disc holding lever 57 rotates clockwise, the right disc holding lever 58 rotates counterclockwise, and the cam portion 58d of the right disc holding lever 58 is cam portion of the disc detection stopper 63. Dive into 63e. The disc detection stopper 63 is attached to the base top 55 by claw portions 63a and 63b, and can be rotated around a line connecting the claw portion 63a and the claw portion 63b. Therefore, when the cam portion 58d of the right disc holding lever 58 enters the cam portion 63e of the disc detection stopper 63, the second locking portion 63d of the disc detection stopper 63 moves to the left in FIG. 25 (b). As a result, the second back disk lever 65 can move to a position where the second back disk lever 65 contacts the first locking portion 63c of the disk detection stopper 63.

  As described above, the disc detection stopper 63 has two engaging portions when the small-diameter disc 23b having the diameter of 8 cm is inserted and when the large-diameter disc 23 having the diameter of 12 cm is inserted, and the large-diameter disc 23 having the diameter of 12 cm is inserted. In this case, both the large and small disks can be inserted by moving the second locking portion 63d when the small-diameter disk 23b having a diameter of 8 cm is inserted to a position where the insertion of the large-diameter disk 23 is not hindered. In the clamp state, which will be described later, the disc detection stopper 63 is urged by the second back disc lever 65 in the disc outer peripheral direction and is held with a gap from the rotating disc. Accordingly, the disk detection stopper 63 does not prevent the disk from rotating, allowing the disk to rotate smoothly and improving the vibration isolation effect.

As shown in FIG. 18, a clamp member drive mechanism including a clamp lever 19 and the like is provided at the center of the base top 55. The clamp member driving mechanism will be described later.
FIG. 19 shows a standby state during the insertion of the disk 23. By inserting the disc 23, the holding portion 57b of the left disc holding lever 57 and the holding portion 58b of the right disc holding lever 58 are pushed toward the outer periphery of the disc and moved in the disc outer peripheral direction. The back disc lever 59 is rotated together with the right disc holding lever 58 and is located in a state where the disc contact portion 65 b of the back disc lever 59 is in contact with the outer peripheral edge of the disc 23. The pin 64c is driven by the movement of the back disc lever 59, and the groove portion 60d of the second disc drive lever 60 is pushed in. Then, in FIG. 19, the second disk drive lever 60 is rotated clockwise to drive the boss 54c of the first disk drive lever 54. As a result, the first disk drive lever 54 is rotated to a position (intermediate position) that is a predetermined amount before the angular position at which the disk detection switch 50 is turned on, as shown in FIG.

  During the insertion of the disk 23 from FIG. 18 to FIG. 19, the disk contact portion 65b of the second back disk lever 65 is pushed against the outer peripheral edge of the disk 23, whereby the second back disk lever 65 is urged clockwise. The boss portion 65 c comes into contact with the locking portion 64 b of the first back disc lever 64. As a result, the first back disc lever 64 and the second back disc lever 65 rotate together, and the stopper contact portion (second contact portion) 65d of the second back disc lever 65 is fixed to the disc detection stopper 63. It is driven to a position where it comes into contact with the first locking portion 63c.

  FIG. 20 shows a standby state in which the disc 23 is further inserted from the state of FIG. When the disc 23 is further inserted, the pin 64c is driven by further rotation of the back disc lever 59, and the groove portion 60d of the second disc drive lever 60 is further pushed. As a result, the second disk drive lever 60 is further rotated clockwise to drive the boss 54c of the first disk drive lever 54. As a result, the first disk drive lever 54 is rotated to a predetermined angular position where the disk detection switch 50 is turned on, that is, the detection position (second position) as shown in FIG. By switching the disk detection switch 50, the control unit detects that the disk 23 has been inserted at the correct position, and rotates the mode motor 42 to start the transition to the clamped state.

  During the insertion of the disc from FIGS. 19 to 20, the disc contact portion 65b of the second back disc lever 65 is pushed against the outer peripheral edge of the disc 23. At this time, the stopper contact portion 65d of the second back disc lever 65 is pushed by the disc. The first stopper 63c of the detection stopper 63 is in contact with the first stopper 63c. Therefore, the second back disc lever 65 is driven counterclockwise, the boss portion 65c is separated from the locking portion 64b of the first back disc lever 64, and the turning center portion 65a of the second back disc lever 65 is turned. . As a result, the first back disk lever 64 is rotated clockwise, and the pin 64 c further pushes the groove 60 d of the second disk drive lever 60. As a result, the second disk drive lever 60 is further rotated clockwise, and is rotated to a predetermined angular position where the disk detection switch 50 is turned on.

  By adopting such a configuration, the ratio of the rotation amount of the second disk drive lever 60 to the disk insertion amount from the state shown in FIG. 18 to the state shown in FIG. 19 is changed from the state shown in FIG. The ratio of the rotation amount of the second disk drive lever 60 to the disk insertion amount in the state shown can be increased. That is, only in the vicinity of turning on the disk detection switch 50, the displacement amount of the first disk drive lever 54 with respect to the disk insertion amount can be increased, and the displacement of the ON operation due to the displacement of the disk detection switch 50 is reduced. Is possible. Thereby, a clamping mistake can be reduced.

  FIG. 21 shows a clamped state in which the disk 23 is clamped by the disk loading mechanism and the clamp member driving mechanism. In this state, the first disk drive lever 54 is rotated clockwise from the standby position, and the second disk drive lever 60 is also rotated clockwise. As a result, the pin 57c provided on the left disc holding lever 57 is driven by the cam groove 60c of the second disc drive lever 60, and the left disc holding lever 57 is rotated in a direction in which the disc holding portion 57b is separated from the disc 23. . The right disc holding lever 58 is rotated in a direction in which the disc holding portion 58 b is separated from the disc 23 in synchronization with the left disc holding lever 57.

  The back disc lever 59 is rotated together with the right disc holding lever 58, and the pin 64c is pushed into the groove portion 60d of the second disc drive lever 60, whereby the second back disc lever 65 is rotated counterclockwise. The contact portion 65 b is separated from the disk 23. At this time, the disc detection stopper 63 is urged toward the outer periphery of the disc by the second back disc lever 65. Thus, each of the disk holding portions 57b and 58b and the disk contact portion 65b can prevent the rotation of the disk mounted on the disk drive motor 6 from being hindered.

  FIG. 22 shows an ejected state in which the disc is ejected in the disc loading mechanism and the clamp member driving mechanism. The first disk drive lever 54 and the second disk drive lever 60 are each rotated counterclockwise. Then, the back disk lever 59 rotates when the pin 64c is pushed into the groove 60d of the second disk drive lever 60, and the disk contact part 65b presses and ejects the disk 23. Thereby, the disk 23 can be easily taken out. When the ejected disc 23 is inserted again, the disc can be inserted by pushing the ejected disc 23 as it is after shifting to the standby state.

  FIG. 23 shows a state in which the ejected disc 23 is forcibly pushed in the eject state shown in FIG. At this time, the back disc lever 59 is pushed in by the disc 23, and the pin 64 c pushes the groove 60 d of the second disc drive lever 60. Here, the second disk drive lever 60 urges and applies the lever body 60q, the small lever 60f having the rotation center 60g on the lever body 60q, and the lever body 60q and the small lever 60f to the stop 60i. It comprises a spring member 60h to be attached. Therefore, the small lever 60f rotates about the rotation center portion 60g, and moves away from the stop portion 60i when the spring member 60h extends. As described above, the spring member 60h is provided in the second disk drive lever 60 that normally operates as a unit, and when the disk 23 is forcibly pushed in, the spring member 60h is deformed and only the small lever 60f is moved, whereby the disk It is possible to absorb an excessive load acting on the loading mechanism and prevent the disk loading mechanism from being damaged.

  FIG. 26A shows a disk loading mechanism and a clamp member driving mechanism provided on the base top 55 when a small-diameter disk 23b having a diameter of 8 cm is inserted in the standby state, and FIG. FIG. 26C shows a side view of the main part viewed from the front surface 2a direction of the disk drive device 2. FIG. When the small-diameter disk 23 b is inserted, the second locking portion 571 of the disk holding portion 57 b of the left disk holding lever 57 and the second locking portion 58 l of the disk holding portion 58 b of the right disk holding lever 58 are the first locking portions of the base top 55. The engaging portions 55d and 55e are kept engaged. Therefore, the position of the small-diameter disk 23b in the left-right direction can be regulated by the disk holding part 57b of the left disk holding lever 57 and the disk holding part 58b of the right disk holding lever 58, and the position of the small-diameter disk 23b at the time of transition to the clamped state is determined. Can do. At this time, as shown in FIG. 26C, the small-diameter disk 23b is held at a predetermined height.

  By inserting the small diameter disk 23b, the disk contact portion 65b of the second back disk lever 65 is pushed in by the small diameter disk, and the stopper contact portion 65d contacts the second locking portion 63d of the disk detection stopper 63. By further inserting the small-diameter disk 23b, the pin 64c is driven by the further rotation of the back disk lever 59, and the second disk drive lever 60 is further pushed in through the groove 60d. As a result, the second disk drive lever 60 is further rotated clockwise to drive the boss 54c of the first disk drive lever 54. As a result, the first disk drive lever 54 is rotated to a predetermined angular position for turning on the disk detection switch 50 as shown in FIG. By switching the disk detection switch 50, it is detected that the small-diameter disk 23b has been inserted at the correct position, and the control unit rotates the mode motor 42 and starts shifting to the clamped state.

  During insertion of the small-diameter disk 23b, the disk contact portion 65b of the second back disk lever 65 is pushed against the outer peripheral edge of the small-diameter disk 23b. At this time, the stopper contact portion 65d of the second back disk lever 65 is Is in contact with the second locking portion 63d. Therefore, the second back disc lever 65 is driven counterclockwise, the boss portion 65c is separated from the locking portion 64b of the first back disc lever 64, and the turning center portion 65a of the second back disc lever 65 is turned. . As a result, the first back disk lever 64 is rotated clockwise, and the pin 64 c further pushes the groove 60 d of the second disk drive lever 60. As a result, the second disk drive lever 60 is further rotated clockwise, and is rotated to a predetermined angular position where the disk detection switch 50 is turned on.

  FIG. 26D is a side view of the main part when the state of FIG. 26B is viewed from the right direction, and shows a state in which the expansion / contraction part 35 is moving. At this time, the portion of the small-diameter disk 23b on the rear surface 2b side of the disk drive device 2 is pressed against the disk contact portion 55c of the base top 55 by the disk holding portion 74d of the disk holder 74 to regulate the height. The height of the left and right central portions is regulated by the disc holding portion 57b of the left disc holding lever 57 and the disc holding portion 58b of the right disc holding lever 58.

  Here, the contact surface of the disk holding portion 74d is formed to be inclined away from the disk 23b in the inner circumferential direction of the disk, and the disk holding portion 74d strongly contacts only the outer peripheral portion of the disk 23. Further, as shown in FIG. 24, the left and right disc holding portions 57b and 58b have a disc lower surface abutting portion 57h at a U-shaped tip portion. The disc lower surface abutting portion 57h is formed to be thin and elastic in the disc thickness direction. The gap between the disk lower surface contact part 57h and the disk upper surface contact part 57m is set to be slightly smaller than the standard disk thickness. When the disc is inserted, the disc lower surface abutting portion 57h is bent and lowered, and the height is regulated by urging the upper surface of the disc to the disc upper surface abutting portion 57m.

  Due to the height regulation of the disk drive device rear surface 2b side portion and the height regulation of the left and right central parts of such a disc, the posture of the small-diameter disc 23b is determined based on the upper surface of the disc, and the posture changes due to disc thickness variations. It can be lost. By using the disk lower surface abutting portion 57h having an elastic structure, the disk height variation (left and right in FIG. 26 (d)) due to the disk thickness variation is reduced. Can do. This prevents the small-diameter disk 23b from contacting a part in the apparatus or interfering with the disk insertion slot 3 during the movement of the expansion / contraction part 35.

  FIG. 27A shows the disc loading mechanism and the clamp member drive mechanism in the clamped state when the small-diameter disc 23b is inserted, and FIG. 27B shows the main part in the state of FIG. FIG. 27 (c) is a side view of the main part viewed from the front surface 2 a direction of the disk drive device 2.

  At this time, the first disk drive lever 54 is rotated clockwise, and the second disk drive lever 60 is rotated clockwise. As a result, the pin 57c of the left disc holding lever 57 is driven by the cam groove 60c of the second disc drive lever 60, and the left disc holding lever 57 rotates in a direction in which the disc holding portion 57b is separated from the small diameter disc 23b. The right disc holding lever 58 rotates in a direction in which the disc holding portion 58b moves away from the small diameter disc 23b in synchronization with the left disc holding lever 57.

  At this time, the second locking portion 571 of the disk holding portion 57 b of the left disk holding lever 57 and the second locking portion 58 l of the disk holding portion 58 b of the right disk holding lever 58 are the first locking portion 55 d of the base top 55. , 55e and the engaged state, it is necessary to release the engaged state. In the transition from the state of FIG. 26 to the state of FIG. 27, the second disk drive lever 60 is rotated clockwise. At the first stage of this rotation, the engagement state of the second locking portion 571 of the disc holding portion 57b of the left disc holding lever 57 and the second locking portion 58l of the disc holding portion 58b of the right disc holding lever 58 is released. In the second stage, the disc holding portion 57b of the left disc holding lever 57 and the disc holding portion 58b of the right disc holding lever 58 are rotated in a direction away from the small diameter disc 23b.

  In releasing the second locking portion 57l in the first stage, the cam portion 60k of the second disk drive lever 60 pushes in the third disk drive lever 61. The third disk drive lever 61 has a rotation center portion 61a provided on the base top 55, and rotates counterclockwise when the cam portion 61b is pushed. As a result, the tip 61c of the third disc drive lever 61 pushes the tip 57n of the left detection lever 57i provided on the disc holding portion 57b of the left disc holding lever 57, and the left detection lever 57i rotates clockwise. Thus, the engagement state of the base top 55 with the first locking portion 55d can be released. Further, in the second locking portion 58l of the disc holding portion 58b of the first stage right disc holding lever 58, the cam portion 60p of the second disc drive lever 60 is provided on the disc holding portion 58b of the right disc holding lever 58. When the front end 58n of the right detection lever 58i is pushed in and the right detection lever 58i rotates counterclockwise, the engaged state with the first locking portion 55e of the base top 55 is released.

  The back disc lever 59 is rotated together with the right disc holding lever 58, and the pin 64c is pushed into the groove portion 60d of the second disc drive lever 60, whereby the disc contact portion 65b is rotated in a direction away from the small diameter disc 23b. . At this time, the disc detection stopper 63 is urged toward the outer periphery of the disc by the second back disc lever 65. Thus, each of the disk holding portions 57b and 58b and the disk contact portion 65b can be held at a position that does not hinder the rotation of the small-diameter disk 23b mounted on the disk drive motor 6. At this time, as shown in FIG. 27 (c), the small-diameter disk 23b is mounted on the turntable 6a of the disk drive motor 6 (not shown), and is held at a height lower than the position of FIG. 26 (c) by a predetermined amount. In the transition to the ejected state, the discs are held at a height at which the disc can be lifted by the tapered portions 57g and 58g of the disc holding portions 57b and 58b.

  With the configuration described above, the disk loading mechanism can regulate the position of the small-diameter disk 23b in the left-right direction in the standby state, and can position the small-diameter disk 23b when shifting to the clamped state. Thereby, a clamping mistake can be prevented, and rotation of the small-diameter disk 23b mounted on the disk drive motor 6 can be prevented from being hindered in the clamped state.

  Next, the clamp member driving mechanism will be described. As shown in FIG. 18, a clamp member drive mechanism including a clamp lever 19 and the like is provided at the center of the base top 55. 28, 29, 30 and 31 (a) show the main part of the clamp member drive mechanism from which the upper clamp member 18b of the clamp member 18 is removed, and FIGS. 28 to 31 (b) show the disk drive device. It is a schematic diagram for operation | movement explanation of the clamp member drive mechanism seen from the front surface 2a direction. FIGS. 28A and 28B show a standby state corresponding to FIG. 20, FIGS. 31A and 31B show a clamped state corresponding to FIG. 21, and FIGS. 29 and 30 show FIGS. The intermediate state with FIG. 31 is shown respectively.

  The clamp lever 19 is provided so as to be capable of rotating in a plane around the rotation center portion 19a. A clamp member 18 is rotatably supported in a hole 19m at one end of the clamp lever 19. The clamp lever 19 abuts against the base top 55 by a convex portion 19b provided on the lower surface on one end side with respect to the rotation center portion 19a and an end portion 19c on the other end side, and the convex portion 19b and the end portion 19c. The clamp member 18 can be moved up and down around a line C1 (see FIG. 29) connecting the two. A pin 19 d is fixed to the clamp lever 19.

  A spring member 20 having a spring portion 20b at one end is attached to the rotation center portion 19a of the clamp lever 19 so as to be rotatable around the rotation center portion 19a. A pin 20 a is formed at the other end of the spring member 20 and is engaged with the cam groove 60 l of the second disk drive lever 60. At this time, the spring portion 20b of the spring member 20 is formed in a shape that sinks into the hole portion 19e of the clamp lever 19 and does not hit the clamp lever 19, and a contact portion 19h of the clamp lever 19 described later moves the clamp member 18 upward. It has a structure that does not prevent lifting.

  The second disk drive lever 60 has a cam groove 60e that drives the pins 19d and 19k of the clamp lever 19, a cam portion 60j, and a cam groove 60l that drives the pin 20a of the spring member 20.

  The cam groove 60e, the cam portion 60j, and the cam groove 60l of the second disk drive lever 60 constitute a clamp lever driving portion, and the second disk drive lever 60, the clamp lever 19, and the spring member 20 are combined with a clamp member driving mechanism. Is configured. In the standby state shown in FIG. 28, the clamp lever 19 is pushed into the front bent portion 29 f of the front top 29 and is positioned within the outer shape of the base top 55. At this time, the clamp lever 19 comes into contact with the upper surface of the base top 55 at the convex portion 19b and the end portion 19c, and the projection 19g comes into contact with the back surface of the cam portion 55b of the base top 55, so that the clamp lever 19 comes into contact. The portion 19h lifts the clamp member 18 upward. As a result, the clamp member 18 is pressed against the front top 29 of the extendable portion 35 which is a raised position that does not hinder disc insertion.

  In the transition from FIG. 28 to FIG. 29, due to the extension of the telescopic portion 35, the cam portion 29 b provided on the back side of the upper surface portion 29 d of the front top 29 pushes the convex portion 19 f of the clamp lever 19, and the clamp lever 19 rotates. It rotates in a plane around the central portion 19a. By this rotation, the suction portion 19i of the clamp lever 19 sinks into the lower surface of the cam groove 60e of the second disk drive lever 60, and the pin 19d rotates to a position where it can engage with the cam groove 60e of the second disk drive lever 60. Is done. At this time, the cam portion 55b that regulates the protruding portion 19g has a shape that is not formed on the protruding portion 19g, and the rising to the protruding portion 19g is allowed by the transition to the state shown in FIGS. To do.

  In FIG. 31, the second disk drive lever 60 shifts to the clamped state. At this time, the cam groove 60e moves to the left in FIG. 31 (b) by the rotation of the second disk drive lever 60, and the pushing of the suction portion 19i of the clamp lever 19 is released. Therefore, the clamp lever 19 can be rotated around a line C1 connecting the convex portion 19b and the end portion 19c. At this time, the pin 20a of the spring member 20 is driven by the cam groove 60l of the second disk drive lever 60, and the spring portion 20b bends and rides on the clamp lever 19. As a result, the spring member 20 generates an urging force, and the tip end portion 19k abuts on the receiving portion 60o at the tip end of the cam portion 60j of the second disc drive lever 60, whereby the rotation of the clamp lever 19 is stopped. Energize.

  As described above, the clamp lever 19 is provided so as to be movable between a position where the disc insertion is not hindered and a holding position where the disc rotation is not hindered. The spring member 20 does not bias the clamp lever 19 when it is in the raised position that does not prevent the disk insertion, and biases the clamp lever 19 when it is in the clamping position that does not prevent the disk from rotating. As a result, it is possible to improve stability at a position where the disc insertion is not hindered and vibration isolation at a position where the disc rotation is not hindered.

  The clamp member 18 holds the disk 23 against the turntable of the disk drive motor 6, and the clamp lever 19 does not hinder the rotation of the disk. As shown in FIG. 15 (b), the surface of the turntable 6a of the disk drive unit 4 is inclined by a predetermined angle B with respect to the reference surface 24a of the base body 24. The height of the convex portion 19b and the height of the receiving portion 60o at the tip of the cam portion 60j of the second disk drive lever 60 are set so as to be substantially parallel to the end portion 19c.

  The centering of the clamp member 18 in the clamp will be described. In the standby state of FIG. 28, the clamp lever 19 is disposed at a first angle located within the outer shape of the base top 55. In the clamped state of FIG. 31, the clamp lever 19 is disposed at the second angle. At this position, the pin 19d of the clamp lever 19 is regulated by the cam portion 60n of the cam groove 60e of the second disk drive lever 60, and the hole 19m at one end of the clamp lever 19 is set concentrically with the clamp member 18. In order not to prevent the rotation of the rotating clamp member 18, the neck portion 18a of the clamp member 18 is formed small with a predetermined gap in the radial direction with respect to the hole portion 19m of the clamp lever 19.

  FIG. 29 shows a state in which the extension of the telescopic part 35 causes the cam part 29b provided on the back side of the upper surface part 29d of the front top 29 to rotate the clamp lever 19, and the clamp member 18 is driven by the rotation of the clamp lever 19. Is shown. At this time, the hole 19m of the clamp lever 19 is set concentrically with the disk drive motor 6 of FIG. 13, but the neck 18a of the clamp member 18 is formed smaller than the hole 19m. The member 18 is not set concentrically with the disk drive motor 6 due to a movement delay corresponding to the gap with respect to the rotation of the clamp lever 19.

  In the transition from the state shown in FIG. 29 to the state shown in FIG. 30, the second disc drive lever 60 is rotated, and the pin 19 d of the clamp lever 19 is in the cam portion 60 m of the cam groove 60 e of the second disc drive lever 60. It is regulated and is located at a third angular position opposite to the first angular position with respect to the second angular position. By this rotation, the clamp member 18 is pushed by the hole 19m of the clamp lever 19 and set to a position substantially concentric with the disk drive motor 6.

  In the transition from the state shown in FIG. 30 to the state shown in FIG. 31, the second disk drive lever 60 is further rotated, and the pin 19 d of the clamp lever 19 moves to the cam portion 60 n of the cam groove 60 e of the second disk drive lever 60. As a result, the clamp lever 19 is at the second angle. Further, the clamp member 18 set substantially concentric with the disk drive motor 6 rotates around the line C1 connecting the convex portion 19b and the end portion 19c of the clamp lever 19 and turns the disk 23 into the disk drive motor 6. Put on. From this, the clamp lever 19 is moved from the first angular position to the second angular position via the third angular position, so that the clamp member 18 is set substantially concentric with the disk drive motor 6 and stable. A high clamping mechanism is constructed.

  In the unclamping operation for releasing the clamp member 18 from the disk 23, the second disk drive lever 60 is operated in reverse, and the state shifts to the state shown in FIG. At this time, the clamp member 18 sandwiches the disk 23 on the turntable of the disk drive motor 6 by the strong magnetic force of the built-in magnet. Therefore, the clamped state is released by pushing the suction part 19i and the tip part 19k of the clamp lever 19 by the cam groove 60e and the cam part 60j of the second disk drive lever 60.

  As described above, according to the disk drive device described above, it is configured by the fixed portion and the expansion / contraction portion, and supports the expansion / contraction portion in a state in which the expansion / contraction portion can be expanded / contracted with respect to the fixed portion. The part is configured to extend. As a result, the depth dimension can be reduced when not in use, and the disk can be inserted in the same direction as the movement of the expansion / contraction section, so that the operating area only needs to be secured in one direction, which is the expansion / contraction direction. Therefore, it is possible to realize a disk drive device capable of saving space even in a used state, and to be easily incorporated into other devices. Further, by adopting a configuration in which the expansion / contraction part is extended only when the disk is inserted, the expansion / contraction part is prevented from popping out due to a malfunction of the control system. As a result, a disk drive device having excellent operability and reliability and capable of being miniaturized is obtained.

Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.
For example, the disk lower surface contact portion of the disk holding member is not limited to being integrated with the disk holding member, but may be formed of a separate member having elasticity such as sponge or rubber. In the above-described embodiment, a disk having a diameter of 8 cm is used as the small diameter disk that is the first diameter, and a disk having a diameter of 12 cm is used as the large diameter disk that is the second diameter. However, the diameter of the disk is not limited to this. It can be changed as necessary.

FIG. 1 is a perspective view showing a flat display device according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a use state of the disk drive device in the display device. FIG. 3 is a plan view showing a disk drive unit of a disk drive device mounted on the display device, and a cross-sectional view of the main part viewed from the left side direction. FIG. 4 is a side view showing the disk drive unit. FIG. 5 is a bottom view of the disk drive unit. FIG. 6 is a front view of the disk drive device as seen from the front side with a part broken away. FIG. 7 is a diagram showing an upper surface, a right side surface, and a rear surface of the expansion / contraction part of the disk drive device. FIG. 8 is a side view showing a state in which the telescopic portion is contracted in the disk drive device. FIG. 9 is a side view showing a state in which the telescopic portion is extended in the disk drive device. FIG. 10 is a plan view showing a drive unit on a base body of the disk drive device. FIG. 11 is a timing chart for explaining the state transition accompanying the movement of the cam slider in the disk drive device. FIG. 12 is a plan view showing a standby state on the base body of the disk drive device. FIG. 13 is a plan view showing a clamped state on the base body of the disk drive device. FIG. 14 is a plan view showing an ejected state on the base body of the disk drive device. FIG. 15 is a cross-sectional view of a main part when the disk drive device is viewed from the right direction. FIG. 16 is a plan view and a cross-sectional view of the main part extracted from the drive unit provided in the base body 24 of the disk drive device. FIG. 17 is a plan view of the main part of the drive unit provided on the base body 24 of the disk drive device, and a side view showing the main part viewed from the rear surface direction of the disk drive device. FIG. 18 is a plan view showing a standby state on the base top of the disk drive device. FIG. 19 is a plan view showing a standby state on the base top of the disk drive device. FIG. 20 is a plan view showing a standby state on the base top of the disk drive device. FIG. 21 is a plan view showing a clamped state on the base top of the disk drive device. FIG. 22 is a plan view showing an ejected state on the base top of the disk drive device. FIG. 23 is a plan view showing an ejected state on the base top of the disk drive device. FIG. 24 is a view showing the operation of the disc holding portion at the tip of the left disc holding lever in the disc drive apparatus. FIG. 25 is a cross-sectional view of the main part viewed from the right side direction showing the disk detection stopper in the disk drive device. FIG. 26 is a plan view showing a standby state when a small-diameter disk on the base top of the disk drive device is inserted. FIG. 27 is a plan view showing a clamped state when a small-diameter disk on the base top of the disk drive device is inserted. FIG. 28 is a plan view showing a standby state of the main part of the clamp member driving mechanism on the base top of the disk drive device, and a schematic view seen from the front side of the disk drive device. FIG. 29 is a plan view showing a state in which the main part of the clamp member driving mechanism on the base top of the disk drive device is in mode transition, and a schematic view seen from the front side of the disk drive device. FIG. 30 is a plan view showing a state during the mode transition of the main part of the clamp member driving mechanism on the base top of the disk drive device, and a schematic view seen from the front side of the disk drive device. FIG. 31 is a plan view showing a clamped state of the main part of the clamp member drive mechanism on the base top of the disk drive device, and a schematic view seen from the front side of the disk drive device. FIG. 32 is a block diagram schematically showing a control system of the disk drive device.

Explanation of symbols

1 ... Thin monitor, 2 ... Disc drive device, 3 ... Disc insertion slot,
4 ... disk drive unit, 5 ... drive unit base, 6 ... disk drive motor,
7 ... Optical pickup, 7b ... FPC cable, 16 ... Stepping motor,
18 ... Clamp member, 19 ... Clamp lever, 23, 23a ... Disc,
24 ... Base body, 29 ... Front top, 32 ... Left arm, 33 ... Right arm,
34 ... Front bottom, 35 ... Expandable part, 36 ... Front panel,
47 ... cam slider, 48 ... switch base, 50 ... disc detection switch,
51 ... Cable, 52 ... FFC cable, 54 ... First disk drive lever,
55 ... Base top, 57 ... Left disc holding lever, 57b ... Disc holding section,
58 ... Right disc holding lever, 59 ... Back disc lever,
60 ... 2nd disc drive lever, 61 ... 3rd disc drive lever 62 ... tension spring, 63 ... disc detection stopper, 64 ... 1st back disc lever,
65 ... second back disk lever, 70 ... motor FPC cable, 71 ... operation key section,
72 ... Bracket motor, 73 ... Connector, 74 ... Disc holder,

Claims (5)

A disk drive unit that supports and rotates a disk-shaped recording medium and performs information processing on the recording medium;
A fixing unit on which the disk drive unit is mounted;
It is supported so as to be movable along a predetermined expansion / contraction direction between a contracted position that overlaps with the fixed part and an extended position that at least partially protrudes from the fixed part and forms a disk storage area that can store the recording medium. And a front end surface provided in the extension position direction with respect to the expansion / contraction direction, and a disc insertion port provided on the front end surface for inserting and discharging the recording medium in the disc storage area along the expansion / contraction direction, A telescopic part having
A telescopic drive mechanism for moving the telescopic part relative to the fixed part along the telescopic direction;
A disk loading mechanism for loading the recording medium inserted through the disk insertion slot into the disk drive unit,
Each of the disk loading mechanisms has a disk holding member that holds both sides of the center of the recording medium inserted from the disk insertion slot, and a first position for holding the inserted recording medium, and the disk holding member includes A first disc holding lever and a second disc holding lever, which are provided so as to be movable between a second position spaced apart from the recording medium in an outer circumferential direction and allowing rotation of the recording medium, and according to insertion of the recording medium A disk drive lever for moving the first and second disk holding levers between the first position and the second position,
Each of the disk holding members includes a disk outer peripheral contact part that contacts an outer peripheral edge of the recording medium, a disk upper surface contact part that contacts one surface of the recording medium and positions the thickness direction of the recording medium, A disk drive apparatus comprising: a disk lower surface contact portion that elastically contacts the other surface of the recording medium and presses the recording medium against the disk upper surface contact portion. The fixed portion has a plate-like base top facing the surface of the inserted recording medium, and the first and second disc holding levers can be rotated between the first position and the second position. Supported by the base top,
The disk drive device according to claim 1, wherein the base top has a disk abutting portion that abuts on the one surface at an insertion side end portion of the inserted recording medium.   The disk drive device according to claim 1, wherein the fixed portion includes a slide support mechanism that movably supports the extendable portion along the extendable direction. The loading mechanism includes a disc detection member provided on each of the first and second disc holding levers, and having a second locking portion that can be engaged with a first locking portion provided on the fixed portion,
Each of the disk detection members includes a restriction position where the second locking portion engages with the first locking portion, and a release position where the second locking portion releases engagement with the first locking portion. When the recording medium having the first diameter is inserted through the disk insertion slot, the movement of the first and second disk holding levers is restricted by being held at the restriction position. Holding in the first position,
Each of the disk detection members has a disk contact portion that has a second diameter larger than the first diameter and contacts a recording medium inserted through the disk insertion slot, and has the second diameter. 2. The disk drive device according to claim 1, wherein when the is inserted, the recording medium moves to the release position to allow the first and second disk holding levers to move to the second position.   The disk drive device according to claim 4, wherein the loading mechanism includes a biasing member that biases the disk detection member to the restriction position.

Images