JP2006065956A - Disk recording and/or playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk recording and/or playback device that securely chucks an optical disk by inserting an engagement projection part of a turntable turned and tilted by an elevation mechanism into the center hole of the optical disk. <P>SOLUTION: The disk recording and/or playback device is equipped with: a device main body 3; a disk conveying mechanism 60 which conveys the optical disk 2; a disk rotationally driving mechanism 42 having a turntable 47 and lock projection parts 48a locking the optical disk 2 on the turntable 47; the elevation mechanism 90 which elevates and lowers the turntable 47 among a chucking position where the turntable is turned and tilted toward a top cover 5 of the device main body 3 to chuck the optical disk 2 to the lock projection parts 48a, a dechucking position where the turntable is turned and tilted toward a bottom case 4 of the device main body 3 to dechuck the optical disk 2, and an intermediate position where the optical disk 2 is rotationally driven; and a chucking plate 7 which is protrusively provided on the top cover 5 and clamps the optical disk 2 together with the turntable 47 turned and tilted at the chucking position to lock the optical disk 2 to the lock projection parts 48a, and a chucking plate has a tilt surface 7a parallel to the turntable 47 turned and tilted to the chucking position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk recording and / or reproducing apparatus for recording and / or reproducing information signals with respect to an optical disk, and more particularly to a disk recording and / or reproducing apparatus capable of reliably performing an optical disk chucking operation.

  Conventionally, optical disks such as CD (Compact Disk) and DVD (Digital Versatile Disk) and magneto-optical disks such as MO (Magneto optical) and MD (Mini Disk) have been widely known as optical disks. Various disk drive devices corresponding to the above have appeared.

  In the disk drive device, the lid or door provided on the device main body is opened, and the disc is directly mounted on the turntable facing from the device, and the disk is placed on the disk tray that is horizontally removed from the device main body. There are a type in which a disc is automatically mounted on an internal turntable when the disc tray is pulled in, a type in which a disc is directly mounted on a turntable provided in the disc tray, and the like. However, both types require operations such as opening and closing the lid and door, inserting and removing the disc tray, and loading the disc on the turntable.

  On the other hand, there is a so-called slot-in type disk drive device in which a disk is automatically mounted on a turntable only by inserting a disk from a disk insertion / removal port provided on the front surface of the apparatus body. In this disk drive device, when a disk is inserted through the disk insertion / removal opening, the pair of guide rollers are rotated in opposite directions while the disk is sandwiched between the pair of guide rollers facing each other, thereby the disk insertion / removal opening A loading operation for drawing the disk inserted from the disk into the apparatus main body and an ejecting operation for ejecting the disk from the disk insertion / removal port to the outside of the apparatus main body are performed.

  By the way, for mobile devices such as notebook personal computers on which a disk drive device is mounted, there is a demand for further reduction in size, weight, and thickness, and the accompanying demand for reduction in size, weight, and thickness of the disk drive device is also increasing. In recent years, there has been an increasing demand for slot-in type disk drive devices with a better operational feeling than tray type disk drive devices that have been mainstream in personal computers and the like.

  However, in the slot-in type disk drive apparatus, since the length of the pair of guide rollers described above is longer than the diameter of the disk, the dimension in the width direction of the entire apparatus becomes longer. Further, since the disk is sandwiched between the pair of guide rollers, the dimension in the thickness direction is also increased. For this reason, the conventional slot-in type disk drive apparatus is very disadvantageous for miniaturization and thinning.

  In particular, an ultra-thin disk drive device mounted on a notebook personal computer or the like has a standard thickness of 12.7 mm, and further up to 9.5 mm, which is the same thickness as a hard disk drive (HDD) unit. When the thickness is reduced, it is very difficult to divert such a guide roller as it is.

  Therefore, in the slot-in type disk drive device, in order to meet the demand for miniaturization and thinning, a plurality of disks are inserted between the disk inserted from the disk insertion / removal port and the base to which the turntable to which the disk is mounted is attached. Rotating arms are arranged, and while the rotating arms are rotated in a plane parallel to the disk, a loading operation for pulling the disk from the disk insertion / removal port to the inside of the apparatus main body, and a disk from the disk insertion / removal opening to the device There has been proposed a disk drive device that performs an ejecting operation to be discharged to the outside of the main body (see, for example, Patent Document 1).

  In addition, this type of disk drive apparatus includes a disk mounting portion provided with a turntable for rotatably holding an optical disk and an engaging protrusion that engages with a center hole of the optical disk, and transporting the optical disk through the disk mounting section. Elevating operation between a chucking release position for retreating from the area, a chucking position for chucking the optical disk transported to the disk mounting position to the disk mounting section, and an intermediate position for recording or reproducing information signals on the optical disk And an elevating mechanism.

  In the state before the optical disk is transported into the apparatus main body, the lifting mechanism rotates to the chucking release position where the turntable is retracted downward from the transport area of the optical disk and waits for the transport of the optical disk. When the optical disk is transported into the apparatus main body by the rotating arm, the lifting mechanism raises the turntable to the disk mounting position and sandwiches the optical disk with the chucking plate provided on the upper surface of the apparatus main body, and engages. The optical disk is chucked on the turntable by engaging the protrusion with the center hole of the optical disk. Next, the lifting mechanism rotates the turntable to an intermediate position where information signals are recorded or reproduced with respect to the optical disc.

  Further, as shown in FIG. 29, the engaging protrusion 202 for engaging the optical disc is formed to protrude from the central portion of the turntable 201, and is engaged with a plurality of holes that engage the periphery of the central hole 203a of the engaged optical disc 203. A locking claw 204 is formed. When the engaging projection 202 is inserted through the center hole 203a of the optical disc 203, the locking claw 204 is pressed and pushed down by the peripheral surface of the center hole 203a, and protrudes to the upper surface side of the disc, so that the locking claw 204 protrudes from the center hole 203a. The optical disk 203 is locked on the turntable 201 by protruding outward.

  However, since the turntable 201 raised to the chucking position by the lifting mechanism (not shown) is inclined with respect to the upper surface of the apparatus main body, the insertion protrusion 202 is inserted into the center hole 203a of the optical disc 203. Variation in depth will occur. That is, the turntable 201 is rotated and inclined to the chucking position by being raised to the upper surface of the apparatus main body by the lifting mechanism, thereby sandwiching the optical disk 203 with the chucking plate 205 provided on the upper surface of the apparatus main body, The engaging protrusion 202 is inserted through the center hole 203 a of the optical disc 203. At this time, the engagement protrusion 202 has a depth at which one end side 201a of the turntable 201 supported by the lifting mechanism is inserted into the center hole 203a of the optical disc 203 as compared to the front end side 201b facing the one end side 201a. Therefore, there is a case where the locking claw 204a provided on the one end side 201a is pushed down to the peripheral surface of the center hole 203a of the optical disc 203 and does not protrude from the upper surface of the disc, and the optical disc 203 cannot be chucked. . In particular, a chucking error is likely to occur in an optical disc having a large thickness.

JP 2002-117604 A

  Accordingly, the present invention provides a disc recording and / or reproducing apparatus that securely inserts an engaging projection of a turntable rotated and inclined by an elevating mechanism into a center hole of an optical disc, thereby reliably chucking the optical disc. Objective.

  In order to solve the above-described problems, a disk recording and / or reproducing apparatus according to the present invention includes an apparatus main body including a bottom case and a top cover, a disk transport mechanism for transporting an optical disk inside and outside the apparatus main body, and A disk rotation drive mechanism comprising a turntable for rotatably holding an optical disk transported into the apparatus main body, a locking projection for locking the optical disk on the turntable, the turntable, and the top cover. A chucking position in which the optical disk is chucked to the locking protrusion by rotating and tilting to the side, and chucking of the optical disk is released by rotating and tilting to the bottom case side, and the locking protrusion is The chucking release position retracted from the optical disk transport area, the chucking position and the chucking A lifting mechanism that moves up and down over an intermediate position for rotating the optical disk, and a projection that is provided on the top cover so as to face the turntable and is tilted to the chucking position. A chucking plate for locking the optical disk to the locking protrusion by sandwiching the optical disk placed on the turntable together with the turntable; and recording information signals on the optical disk and / or An optical pickup that performs reproduction, and a pickup moving mechanism that moves the optical pickup along the radial direction of the optical disc, and the chucking plate is parallel to the turntable that is rotated and inclined to the chucking position. An inclined surface is provided.

  According to such a disk recording and / or reproducing apparatus, since the inclined surface is formed on the surface of the chucking plate facing the turntable, the inclined surface is parallel to the optical disk rotated and inclined together with the turntable. The optical disk can be clamped with equal force together with the turn table. Accordingly, the engaging protrusion of the turntable is inserted into the center hole of the optical disk at an equal depth, and the plurality of locking claws formed on the engaging protrusion protrude to the upper surface of the disk so that the center hole of the optical disk Lock around. Thereby, the present invention can surely chuck the optical disk on the turntable.

  Hereinafter, a disk recording and / or reproducing apparatus to which the present invention is applied will be described in detail with reference to the drawings. A disk drive device to which the present invention is applied is, for example, a slot-in type disk drive device 1 mounted on a device main body 1001 of a notebook personal computer 1000 as shown in FIG. As shown in FIG. 2, the disk drive apparatus 1 has a structure in which the entire apparatus is thinned to about 12.7 mm, for example, and an optical disk 2 such as a CD (Compact Disk) or a DVD (Digital Versatile Disk). It is possible to record and reproduce information signals. The disk drive apparatus 1 includes a standard size disk having a diameter of 12 cm (hereinafter referred to as a large diameter disk) and a disk having a diameter smaller than that of the large diameter disk and having a diameter of 8 cm (hereinafter referred to as a small diameter disk). It can be supported.

  As shown in FIG. 2, the disk drive apparatus 1 includes a casing 3 that is an outer casing of the apparatus main body. The casing 3 includes a bottom case 4 that is a substantially flat box that is a lower casing, and a bottom case 4. The top cover 5 is a top plate that covers the upper opening of the case 4.

  As shown in FIGS. 2 and 3, the top cover 5 is made of thin sheet metal, and a top plate portion 5 a that closes the upper opening of the bottom case 4, and the periphery of the top plate portion 5 a is on both side surfaces of the bottom case 4. And a pair of side plate portions 5b that are slightly bent along. A substantially circular opening 6 is formed at a substantially central portion of the top plate portion 5a. The opening 6 is provided so that the engaging protrusion 48a of the turntable 47 that is engaged with the center hole 2a of the optical disc 2 is exposed to the outside during a chucking operation described later. Further, the periphery of the opening 6 of the top plate portion 5 a is in contact with the periphery of the center hole 2 a of the optical disk 2 placed on the turntable 47, thereby pressing the optical disk 2 and chucking the turntable 47. A chucking plate 7 is formed so as to slightly protrude toward the inside of the housing 3.

  On the inner main surface of the top plate portion 5a, a distal end portion of a first rotating arm 61 and a distal end portion of a second rotating arm 62, which will be described later, are contiguous or separated from each other while being regulated in the height direction. A guide member 8 for guiding in the direction is provided. The guide member 8 is made of a sheet metal having a substantially arc shape between both side plate portions 5b of the top plate portion 5a, and is attached to the front side of the top plate 5a by spot welding or the like. Further, the guide member 8 has a stepped portion 8a whose back side is made one step higher than the mounting surface on the front side. Thereby, between the step part 8a on the back side of the guide member 8 and the top plate part 5a, the tip part of the first turning arm 61 and the tip part of the second turning arm 62 are engaged. Guide grooves 9 are formed. The top plate portion 5a has working window portions 10 for engaging the leading end portion of the first rotating arm 61 and the leading end portion of the second rotating arm 62 with the guide groove 9 respectively. Is provided.

  As shown in FIG. 4, the chucking plate 7 provided around the opening 6 of the top plate portion 5 a is formed so as to protrude to the inside of the housing 3, and the surface facing the turntable 47 is this An inclined surface 7a having an inclination angle is formed so as to be parallel to the turntable 47 when the turntable 47 is rotated and inclined to the chucking position of the optical disc 2. Further, the chucking plate 7 is formed so that the thickness gradually decreases from the rotation fulcrum side of the base 45 holding the turntable 47 to the tip side opposite to the rotation fulcrum side, and rotates to the chucking position. It is parallel to the inclined turntable 47.

  Accordingly, when the base 45 holding the turntable 47 is raised to the chucking position by the base lifting mechanism 90, the chucking plate 7 is positioned at the disk mounting position by the inclined surface 7a and the turntable 47. The peripheral portion of the center hole 2a can be clamped with an equal force, and the engaging protrusion 48a can be inserted into the center hole 2a of the optical disc 2. That is, since the chucking plate 7 is formed with the inclined surface 7a whose thickness decreases from the rotation fulcrum side to the tip side of the base 45 on the surface of the turntable 47 facing the disk mounting position, Abutting in parallel with the optical disk 2 that is rotated and inclined together with the turntable 47, the peripheral portion of the center hole 2a can be held with the turntable 47 with an equal force. Therefore, the depth at which the engaging protrusion 48a of the turntable 47 is inserted into the center hole 2a of the optical disk 2 is equal on the rotation fulcrum side of the base 45 and the distal end side opposite to the rotation fulcrum side. A plurality of locking claws 48b formed on the protrusion 48a protrude on the upper surface of the disk and lock around the center hole 2a of the optical disk 2 so that the optical disk 2 can be securely chucked on the turntable 47. .

  The chucking plate 7 may be formed by bonding around the opening 6 of the top cover 5 or may be formed integrally with the top cover 5.

  As shown in FIG. 5, the bottom case 4 is made of a sheet metal formed in a substantially flat box shape, and its bottom surface portion has a substantially rectangular shape, and one side surface portion is raised above the bottom surface portion. A deck portion 4a projecting outward is provided. Although not shown, the bottom case 4 has an electronic component such as an IC chip that constitutes a drive control circuit, a connector for electrical connection of each part, and an operation of each part. The circuit board on which the detection switch and the like are arranged is attached by screwing or the like. A chassis 11 is attached to the bottom surface of the bottom case 4 by screws. The chassis 11 is disposed above the circuit board so as to partition the inside of the bottom case 4 vertically at a height substantially equal to the deck portion 4a.

  As shown in FIG. 2, the top cover 5 is attached to the bottom case 4 by screws. Specifically, as shown in FIG. 3, a plurality of through holes 13 through which the screws 12 pass are formed in the outer peripheral edge portion of the top plate portion 5 a. Further, the side plate portions 5b on both sides are provided with a plurality of guide pieces 14 bent inward at substantially right angles. On the other hand, as shown in FIG. 5, a plurality of fixing pieces 15 bent at substantially right angles are provided on the outer peripheral edge of the bottom case 4, and the fixing pieces 15 penetrate the top cover 5. A screw hole 16 corresponding to the hole 13 is formed. In addition, a plurality of guide slits 17 that prevent the plurality of guide pieces 14 of the top cover 5 from coming off are formed on both side surfaces of the bottom case 4.

  When attaching the top cover 5 to the bottom case 4, the top cover 5 is moved from the front side to the back side with the plurality of guide slits 17 of the bottom case 4 engaged with the plurality of guide pieces 14 of the top cover 5. Slide to the side. Thereby, the top plate part 5 a of the top cover 5 is in a state of closing the upper opening of the bottom case 4. In this state, the screw 12 is screwed into the screw hole 16 of the bottom case 4 through the plurality of through holes 13 of the top cover 5. The housing 3 shown in FIG. 2 is configured as described above.

  Note that a label seal (not shown) that covers the opening 6 and the work window 10 described above is attached to the top plate 5a of the top cover 5 after assembly. This prevents dust and the like from entering the inside of the housing 3.

  A front panel 18 having a substantially rectangular flat plate shape is attached to the front surface of the housing 3 as shown in FIG. The front panel 18 is provided with a disk insertion / removal opening 19 through which the optical disk 2 is inserted and removed in the horizontal direction. That is, the optical disk 2 can be inserted into the housing 3 from the disk insertion / removal opening 19 or discharged from the disk insertion / removal opening 19 to the outside of the housing 3. Further, on the front surface of the front panel 18, a display unit 20 that lights and displays an access state with respect to the optical disc 2 and an eject button 21 that is pressed when the optical disc 2 is ejected are provided.

  A plurality of locking pieces for attaching the front panel 18 to the front surface of the housing 3 are provided on the back side of the front panel 18. In the disk drive device 1, a panel curtain that covers the disk insertion / removal opening 19 is provided to prevent dust and the like from entering the inside of the housing 3 from the disk insertion / removal opening 19 of the front panel 18.

  Next, the base unit 40 for chucking and rotating the optical disc 2 and recording and / or reproducing information signals will be described.

  As shown in FIG. 6, the base unit 40 is provided on the bottom surface of the bottom case 4, and a disk mounting portion 41 to which the optical disk 2 inserted into the housing 3 from the disk insertion / removal opening 19 is mounted. A disk rotation drive mechanism 42 that rotationally drives the optical disk 2 mounted on the mounting portion 41, an optical pickup 43 that writes and reads signals to and from the optical disk 2 that is rotationally driven by the disk rotation drive mechanism 42, and this light A pickup feeding mechanism 44 that feeds the pickup 43 in the radial direction of the optical disc 2 and has an ultra-thin structure integrally provided with the base 45.

  The base unit 40 is disposed on the front side of the chassis 11 so that the disk mounting portion 41 is positioned approximately in the center on the bottom surface of the bottom case 4. The base unit 40 can be moved up and down by a base lifting mechanism 90 described later. The optical disk 2 inserted into the housing 3 from the disk insertion / removal port 19 in an initial state before the optical disk 2 is inserted. Is located below. When the optical disk 2 is inserted, the base unit 40 is raised by the base lifting mechanism 90, and the optical pickup 43 is recorded and / or recorded by the optical pickup 43 when the optical disk 2 is mounted on the disk mounting portion 41 and rotated. Perform playback. Next, when the optical disk 2 is ejected, the base unit 40 is lowered by the base lifting mechanism 90 so that the optical disk 2 is detached from the disk mounting portion 41 and can be transported by a disk transport mechanism 60 described later.

  The base 45 is formed by punching a sheet metal into a predetermined shape and bending the periphery slightly downward. On the main surface of the base 45, a substantially semicircular table opening 45 a that faces a turntable 47 of a disk mounting portion 41, which will be described later, and an objective lens 51 of an optical pickup 43, which will be described later, face upward. A substantially rectangular pickup opening 45b is continuously formed. A decorative board (not shown) in which openings corresponding to the openings 45a and 45b are formed is attached to the upper surface of the base 45.

  The disc mounting portion 41 has a turntable 47 that is rotationally driven by a disc rotation drive mechanism 42, and a chucking mechanism 48 for mounting the optical disc 2 is provided at the center of the turntable 47. The chucking mechanism 48 includes an engaging protrusion 48a that engages with the center hole 2a of the optical disc 2, and a plurality of portions that lock the periphery of the center hole 2a of the optical disc 2 that is engaged with the engaging protrusion 48a. The optical disk 2 is held on the turntable 47.

  The disk rotation drive mechanism 42 has a flat spindle motor 49 that rotates the optical disk 2 integrally with the turntable 47, and the spindle motor 49 has a turntable 47 provided on the upper surface portion for the table of the base 45. It is attached to the lower surface of the base 45 with screws so as to protrude slightly from the opening 45a.

  The optical pickup 43 collects the light beam emitted from the semiconductor laser serving as the light source by the objective lens 51 and irradiates the signal recording surface of the optical disc 2, and returns the light beam reflected by the signal recording surface of the optical disc 2. And an optical block that detects light by a light detector composed of a light receiving element or the like, and writes or reads a signal to or from the optical disk 2.

  This optical pickup 43 has an objective lens drive mechanism such as a biaxial actuator that drives the objective lens 51 to move in the optical axis direction (referred to as the focusing direction) and the direction orthogonal to the recording track of the optical disc (referred to as the tracking direction). On the signal recording surface of the optical disc 2 while displacing the objective lens 51 in the focusing direction and the tracking direction by the biaxial actuator based on the detection signal from the optical disc 2 detected by the photodetector described above. Further, drive control is performed such as a focus servo for focusing the objective lens 51 and a tracking servo for causing the spot of the light beam condensed by the objective lens 51 to follow the recording track. As the objective lens driving mechanism, in addition to such focusing control and tracking control, the signal of the optical disc 2 is irradiated so that the light beam condensed by the objective lens 51 is irradiated perpendicularly to the signal recording surface of the optical disc 2. A triaxial actuator that can adjust the inclination (skew) of the objective lens 51 with respect to the recording surface may be used.

  The pickup feeding mechanism 44 includes a pickup base 53 on which the optical pickup 43 is mounted, a pair of guide shafts 54a and 54b that support the pickup base 53 so as to be slidable in the radial direction of the optical disc 2, and the pair of guide shafts 54a and 54a. A displacement driving mechanism 55 is provided for driving the pickup base 53 supported by 54 b in the radial direction of the optical disc 2.

  The pickup base 53 is formed with a pair of guide pieces 56a and 56b formed with a guide hole through which one of the pair of guide shafts 54a and 54b is inserted, and a guide groove for sandwiching the other guide shaft 54b. The guide pieces 57 are formed so as to protrude from the side surfaces facing each other. Accordingly, the pickup base 53 is slidably supported by the pair of guide shafts 54a and 54b.

  The pair of guide shafts 54a and 54b are arranged on the lower surface of the base 45 so as to be parallel to the radial direction of the optical disc 2, and the optical pickup 43 facing the optical pickup 43 through the pickup opening 45b of the base 45 is disposed on the optical disc. 2 is guided over the inner and outer peripheries.

  The displacement drive mechanism 55 converts the rotational drive of the drive motor 58 attached to the base 45 to linear drive via a gear or a rack (not shown), and the pickup base 53 is moved along a pair of guide shafts 54a and 54b. It is driven to move in the radial direction of the optical disk 2, ie, the radial direction of the optical disk 2.

  As shown in FIG. 5, the disk drive apparatus 1 includes a disk insertion / removal position where the optical disk 2 is inserted / removed from the disk insertion / removal port 19 and a disk mounting position where the optical disk 2 is mounted on the turntable 47 of the disk mounting portion 41 And a disk transport mechanism 60 for transporting the optical disk 2 between them. The disc transport mechanism 60 is a disc that serves as a support member operated to move between the main surface of the top plate portion 5a facing the disc mounting portion 41 and the main surface of the optical disc 2 inserted from the disc insertion / removal port 19. The first rotary arm 61 and the second rotary arm 62 are configured to be swingable in a plane parallel to the two main surfaces.

  The first rotating arm 61 and the second rotating arm 62 are disposed on both the left and right sides of the disc mounting portion 41, respectively, and are proximal end portions located on the back side of the disc mounting portion 41, respectively. Is supported in a rotatable manner, and the front end portion located on the front side of the disc mounting portion 41 is close to or separated from each other within a plane parallel to the main surface of the optical disc 2 inserted from the disc insertion / removal port 19. It can swing.

Specifically, the first rotating arm 61 is made of a long sheet metal, and is positioned on one of the left and right sides (for example, the right side in FIG. 5) sandwiching the turntable 47 of the disk mounting portion 41. through the first shaft 64 which end portion is provided on the chassis 11, and is rotatably supported in the arrow a ₁ direction and the arrow a ₂ direction. A first front-side abutting member 65 that abuts on the outer periphery of the optical disc 2 inserted from the disc insertion / removal port 19 protrudes downward from the tip of the first rotating arm 61. It has been. Further, in the vicinity of the base end portion of the first rotating arm 61, when the optical disc 2 is positioned at the disc mounting position, the first front-side abutting member 65 and the outer peripheral portion of the optical disc 2 are in contact with each other. One rear-side contact member 66 is provided protruding downward.

  The first front-side contact member 65 and the first back-side contact member 66 are made of a softer resin than the optical disc 2 and are a central portion that comes into contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19. Are curved inward, and have flange portions 65a and 66a whose both end portions are enlarged in diameter so as to restrict the movement of the optical disc 2 in the height direction. The first front-side contact member 65 and the first back-side contact member 66 have a small diameter that is rotatably attached to the main surface of the first rotating arm 61 facing the disc mounting portion 41. It may be a rotating roller.

On the other hand, the second rotating arm 62 is made of a long sheet metal, and is located on the other left and right sides (for example, the left side in FIG. 5) sandwiching the turntable 47 of the disk mounting portion 41, and is at the base end portion. There through the first support shaft 64 provided on the chassis 11, and is rotatably supported in the arrow b ₁ direction and the arrow b ₂ direction. Further, a second front side abutting member 68 that abuts on the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 19 protrudes downward from the tip of the second rotating arm 62. It has been.

  The second front-side contact member 68 is made of a softer resin than the optical disc 2, and a central portion that comes into contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 19 is curved inward, and both end portions thereof are The flange portion 68a having an enlarged diameter has a substantially hourglass shape that restricts the movement of the optical disc 2 in the height direction. The second front contact member 68 may be a small-diameter rotating roller that is rotatably attached to the main surface of the second rotating arm 62 that faces the disc mounting portion 41.

  Further, a torsion coil spring 70 is provided at the base end portion of the first rotating arm 61 and the second rotating arm 62, which is an urging means for urging the rotating arms 61 and 62 in a direction approaching each other. It has been. The torsion coil spring 70 has one end locked to the base end of the first rotating arm 61 and the other end fixed to the second turn, with the first support shaft 64 inserted through the winding portion. By being locked to the base end portion of the moving arm 62, the first and second rotating arms 61 and 62 are urged in a direction approaching each other. In addition, the torsion coil spring 70 rotates the first and second rotating arms 61 and 62 to draw all types of optical disks 2 having different diameters and weights into the housing 3, and to the outside of the housing 3. It has sufficient urging force to be discharged.

  As described above, the first rotation arm 61 and the second rotation arm 62 are arranged at positions that are substantially symmetrical with respect to the turntable 47 of the disk mounting portion 41, and the rotation center of each other is the same. They coincide with each other at a substantially central portion on the back side of the disc mounting portion 41. Moreover, the front-end | tip part of the 1st rotation arm 61 and the front-end | tip part of the 2nd rotation arm 62 can be slid along a rotation direction in the state engaged with the guide groove 9 of the top-plate part 5a mentioned above. It is supported by.

  The disc transport mechanism 60 has an interlocking mechanism 71 for interlocking the first rotating arm 61 and the second rotating arm 62, and the first rotating arm is connected via the interlocking mechanism 71. 61 and the second turning arm 62 can turn in opposite directions. Specifically, the interlocking mechanism 71 includes a first connecting arm 72 and a second connecting arm 73 that connect the first rotating arm 61 and the second rotating arm 62. The first connecting arm 72 and the second connecting arm 73 are made of a long sheet metal, and one end in the longitudinal direction of each of the first connecting arm 72 and the second connecting arm 73 is the base end of the first rotating arm 61 and the second rotating arm. 62 has a so-called pantograph structure in which the other end in the longitudinal direction is rotatably supported via a second support shaft 74. The second support shaft 74 is engaged with a guide slit 75 provided on the front side of the first support shaft 64 of the chassis 11, and the guide slit 75 extends in the insertion direction of the optical disc 2. It is formed in a straight line.

  Accordingly, the first rotating arm 61 and the second rotating arm 62 are configured such that the first connecting arm 72 and the second connecting arm 73 are configured such that the second support shaft 74 slides in the guide slit 75. It is possible to rotate in opposite directions via each other. That is, the distal end portion of the first rotating arm 61 and the distal end portion of the second rotating arm 62 can be swung in the direction of approaching or separating from each other by such an interlocking mechanism 71.

Further, the disk transport mechanism 60 serves as a loading assisting means for assisting a loading operation for drawing the optical disk 2 from the disk insertion / removal opening 19 into the housing 3, and the main surface of the optical disk 2 inserted from the disk insertion / removal opening 19. A third rotating arm 76 that can swing within a parallel plane is provided. The third rotation arm 76 is made of a long sheet metal, and is located on the front side of the second rotation arm 62 on one of the left and right sides (for example, the left side in FIG. 5) sandwiching the turntable 47 of the disk mounting portion 41. located on the side, via a support shaft 77 having a base end portion is provided on the deck portion 4a, and is rotatably supported in the arrow c ₁ direction and the arrow c ₂ direction. Further, a third abutting member 78 that abuts on the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19 protrudes upward from the tip of the third rotating arm 76. Yes.

  The third abutting member 78 is a small-diameter rotating roller that is rotatably attached to the main surface of the third rotating arm 76 that faces the top plate portion 5a, and is made of a softer resin than the optical disc 2. Further, the third contact member 78 is a flange portion 78a in which a central portion that is in contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 19 is curved inward, and both end portions thereof are enlarged in diameter. The optical disk 2 has a substantially hourglass shape that restricts the movement of the optical disk 2 in the height direction.

  The third rotating arm 76 is separated from the direction in which the third contact member 78 is brought into contact with the outer peripheral portion of the optical disc 2 and the outer peripheral portion of the optical disc 2 by engaging a torsion coil spring (not shown). It is energized so that it can be switched to a direction to perform.

The disk transport mechanism 60 is a main surface of the optical disk 2 inserted from the disk insertion / removal opening 19 as an ejection assisting means for assisting an ejection operation for ejecting the optical disk 2 from the disk insertion / removal opening 19 to the outside of the housing 3. The fourth rotation arm 79 is swingable in a plane parallel to the first rotation arm 79. The fourth turning arm 79 is made of a long sheet metal, and is an intermediate portion of the second turning arm 62 on one of the left and right sides (for example, the left side in FIG. 5) sandwiching the turntable 47 of the disc mounting portion 41. in, and it is rotatably supported in the arrow d ₁ direction and the arrow d ₂ direction. A fourth abutting member 80 that abuts on the back side of the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19 protrudes upward at the tip of the fourth rotating arm 79. Is provided.

  The fourth abutting member 80 is made of a softer resin than the optical disc 2, and a central portion that abuts on the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 19 is curved inward, and both end portions thereof are expanded. The diameter flange portion 80a has a substantially hourglass shape that restricts the movement of the optical disc 2 in the height direction. The fourth contact member 80 may be a small-diameter rotating roller that is rotatably attached to the main surface of the fourth rotating arm 79 that faces the top plate portion 5a.

The second rotary arm 62, the fourth rotating arm 79 is the rear side, that is, when it is rotated in the arrow d ₁ direction, to the rear side of the fourth rotating arm 79 A restricting piece 81 for restricting the rotation is provided.

  The disk transport mechanism 60 has a drive lever 82 for causing the above-described rotating arms 61, 62, 76, 79 to cooperate. The drive lever 82 is made of a resin member formed in a substantially rectangular parallelepiped shape as a whole, and is disposed between one side surface portion of the bottom case 4 and the base unit 40 at the bottom surface portion of the bottom case 4. The drive lever 82 is positioned below the optical disk 2 inserted into the housing 3 from the disk insertion / removal port 19 and has a top surface substantially flush with the bottom surface of the deck section 4a. Have. The drive lever 82 is slidably driven in the front-rear direction via a displacement drive mechanism (not shown) including a drive motor and a gear group provided on the bottom surface of the bottom case 4.

  In the disk transport mechanism 60, the second support shaft 74 described above slides in the guide slit 75 in conjunction with the sliding operation of the drive lever 82. As a result, the first rotating arm 61 and the second rotating arm 62 are rotated in opposite directions via the interlocking mechanism 71. Further, a guide pin 84 that is engaged with a guide slit 83 provided on the upper surface of the drive lever 82 is provided on the base end side of the third rotating arm 76. Accordingly, the third rotation arm 76 is rotated by the guide pin 84 sliding in the guide slit 83 in conjunction with the slide operation of the drive lever 82. The fourth turning arm 79 is also turned in conjunction with the slide operation of the drive lever 82 via a coupling mechanism (not shown).

  In the disk transport mechanism 60, the first rotating arm 61, the second rotating arm 62, the third rotating arm 76, and the fourth rotating arm 79 cooperate with each other while the optical disk 2 is in operation. Loading operation for drawing the optical disk 2 into the housing 3 from the disk insertion / removal opening, centering operation for positioning the optical disk 2 at the disk mounting position, and ejection operation for ejecting the optical disk 2 from the disk insertion / removal opening 19 to the outside of the housing 3. I do.

  As shown in FIG. 5, the disk drive device 1 includes a base lifting mechanism 90 that moves the base 45 that supports the optical pickup 43 up and down in conjunction with the slide of the drive lever 82 described above.

  The base elevating mechanism 90 raises the base 45 and lowers the chucking position for mounting the optical disk 2 positioned at the disk mounting position on the turntable 47 of the disk mounting section 41 and the base 45 to move the disk mounting section. A chucking release position for releasing the optical disk 2 from the turntable 47 of 41, and an intermediate position for recording or reproducing a signal with respect to the optical disk 2 by positioning the base 45 between the chucking position and the chucking release position. The base 45 is moved up and down.

  Specifically, a cam slit (not shown) corresponding to the chucking position, the chucking release position, and the intermediate position extends in the longitudinal direction on the side surface of the drive lever 82 facing the base 45. Is formed.

  A cam lever 91 is disposed on the bottom surface of the bottom case 4 along the side surface on the back side of the base 45. The cam lever 91 is made of a long flat plate member, and is slid in a direction substantially perpendicular to the sliding direction of the driving lever 82 in conjunction with the sliding of the driving lever 82 in the front-rear direction. Further, a cam piece 92 that is bent upward from an edge portion facing the base 45 is provided at an intermediate portion of the cam lever 91. The cam piece 92 is formed with cam slits (not shown) corresponding to the chucking position, the chucking release position, and the intermediate position in the longitudinal direction.

  A bent piece 93 is formed on the bottom surface of the bottom case 4 by bending along the side surface on the back side of the base 45. A vertical slit (not shown) for raising and lowering the base 45 is formed in the bent piece 93 over the vertical direction.

  On the other hand, as shown in FIG. 6, the base 45 is positioned on the side of the disc mounting portion 41 on the side facing the drive lever 82 and is supported by being engaged with the cam slit of the drive lever 82. The second support shaft is located on the side of the disc mounting portion 41 facing the cam lever 91 and is engaged with and supported by the cam slit of the cam piece 92 and the vertical slit of the bent piece 93. 96 and a third side which is rotatably supported in a shaft hole 97 provided on the other side surface of the bottom case 4 and located on the front side of the side surface opposite to the side surface facing the drive lever 82. It is located on the front side of the side opposite to the side opposite to the side facing the camshaft 91 and the cam lever 91, and is fixedly supported to the bottom of the bottom case 4 by screws 100 via an insulator 99 made of a viscoelastic member such as rubber. Fixed support 1 It has one and.

  Therefore, in the base lifting mechanism 90, the first support shaft 95 slides in the cam slit of the drive lever 82 in conjunction with the slide of the drive lever 82 and the cam lever 91, and the second support shaft 96 is connected to the cam lever 91. By sliding the cam slit and the vertical slit of the bent piece 93, the disc mounting portion 41 side of the base 45 rotates the third support shaft 98 supported by the side surface of the bottom case 4 with respect to the front surface side. As a fulcrum, it is moved up and down between the chucking position, the chucking release position, and the intermediate position.

  As shown in FIG. 5, when the base lifting mechanism 90 lowers the base 45, the optical disk 2 mounted on the turntable 47 of the disk mounting portion 41 is placed on the bottom surface of the bottom case 4. A push-up pin 102 is provided as a chucking release means for releasing from 47. The push-up pin 102 is located in the vicinity of the disk mounting portion 41 of the base unit 40, specifically, on the back side of the base 45 closest to the disk mounting portion 41, and protrudes upward from the bottom surface portion of the bottom case 4. Is provided.

  Next, a specific operation of the disk drive device 1 configured as described above will be described. In this disk drive device 1, as shown in FIG. 7, in the initial state before the optical disk 2 is inserted, each of the first rotating arm 61 and the second rotating arm 62 has a predetermined tip portion. It is held open at a spread angle. Further, the third rotating arm 76 is held in a state where the distal end portion is located outside the base end portion and the distal end portion is located on the front side of the base end portion. Further, the fourth rotating arm 79 is held in a state in which the distal end portion is located inside the proximal end portion and the distal end portion is located on the front side of the proximal end portion. The drive lever 82 is located on the front side of the bottom case 4.

  The disk drive device 1 performs a loading operation of pulling the optical disks 2A and 2B to the disk mounting position even when the optical disks 2A and 2B having different outer diameters are inserted from the disk insertion / removal port 19 of the housing 3. Specifically, when the large-diameter disk 2A is inserted from the disk insertion / removal opening 19 of the housing 3, first, as shown in FIG. 8, the large diameter inserted from the disk insertion / removal opening 19 into the housing 3 is inserted. A state in which the back side of the outer peripheral portion of the disk 2A is in contact with the first front-side contact member 65 of the first rotation arm 61 and the second front-side contact member 68 of the second rotation arm 62; Become.

Next, as shown in FIG. 9, when the large-diameter disk 2A is further pushed into the housing 3 from the disk insertion / removal port 19 from this state, the first rotating arm 61 and the second rotating arm 62 Sandwiches the outer peripheral portion of the large-diameter disc 2A between the first front-side contact member 65 and the second front-side contact member 68. At this time, in a state where the first front surface side contact member 65 and the second front surface side contact member 68 are in contact with the back surface side of the outer peripheral portion of the large-diameter disk 2A, The second rotating arm 62 is rotated in a direction away from each other against the bias of the torsion coil spring, that is, in the directions of arrows a ₂ and b ₂ shown in FIG.

Then, when the first rotating arm 61 and the second rotating arm 62 are rotated by a predetermined amount in a direction away from each other, the detection switch provided on the circuit board is pressed, whereby the displacement drive mechanism The slide to the back side of the drive lever 82 is started. Thus, the third rotating arm 76 is rotated in the direction of arrow c ₁ shown in FIG. Further, the third rotating arm 76 is brought into a state in which the third contact member 78 is in contact with the front surface side of the outer peripheral portion of the large-diameter disk 2A, whereby the front surface of the outer peripheral portion of the large-diameter disk 2A. The large-diameter disk 2A is pulled into the housing 3 while pressing the side.

Then, as shown in FIG. 10, until the center hole 2a of the large-diameter disk 2A is located on the back side of the straight line connecting the first front-side contact member 65 and the second front-side contact member 68, When the large-diameter disk 2A is drawn into the housing 3, the first front-side contact member 65 and the second front-side contact member 68 are moved from the back side to the front side along the outer periphery of the large-diameter disk 2A. Go around to the side. Then, the first rotating arm 61 is now in a state in which the first front-side contact member 65 and the second front-side contact member 68 are in contact with the front side of the outer peripheral portion of the large-diameter disk 2A. And the second rotating arm 62 are urged by the torsion coil spring 70 and are rotated in directions close to each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG. Accordingly, the first rotating arm 61 and the second rotating arm 62 pull the large diameter disk 2A to the disk mounting position shown in FIG. 11 while pressing the front surface side of the outer peripheral portion of the large diameter disk 2A. become.

Further, the fourth rotating arm 79 is pressed in a state where the fourth contact member 80 is in contact with the back side of the outer peripheral portion of the large-diameter disk 2A, whereby the arrow d ₁ shown in FIG. It is rotated in the direction. The fourth rotating arm 79 is brought into contact with the regulating piece 81 of the second rotating arm 62 when the large-diameter disk 2A is pulled in at the disk mounting position shown in FIG. It becomes a regulated state.

  On the other hand, when the small-diameter disk 2B is inserted from the disk insertion / removal opening 19 of the housing 3, first, as shown in FIG. 12, the outer periphery of the small-diameter disk 2B inserted into the housing 3 from the disk insertion / removal opening 19 The rear surface side of the first contact portion 65 is in contact with the first front contact member 65 of the first rotation arm 61 and the second front contact member 68 of the second rotation arm 62.

Next, as shown in FIG. 13, when the small-diameter disk 2B is further pushed into the housing 3 from the disk insertion / removal port 19 from this state, the first rotating arm 61 and the second rotating arm 62 are moved. The outer peripheral portion of the small-diameter disk 2B is sandwiched between the first front-side contact member 65 and the second front-side contact member 68. At this time, in a state where the first front surface side contact member 65 and the second front surface side contact member 68 are in contact with the back surface side of the outer peripheral portion of the small-diameter disk 2B, The two rotating arms 62 are rotated away from each other against the bias of the torsion coil spring 70, that is, in the directions of arrows a ₂ and b ₂ shown in FIG.

Then, when the first rotating arm 61 and the second rotating arm 62 are rotated by a predetermined amount in a direction away from each other, the detection switch provided on the circuit board is pressed, whereby the displacement drive mechanism The slide to the back side of the drive lever 82 is started. Thus, the third rotating arm 76 is rotated in the direction of arrow c ₁ shown in FIG. Further, the third rotating arm 76 is in a state where the third contact member 78 is in contact with the front surface side of the outer peripheral portion of the small-diameter disk 2B, so that the front surface side of the outer peripheral portion of the small-diameter disk 2B is moved. The small-diameter disk 2B is pulled into the housing 3 from the disk insertion / removal port 19 while being pressed.

Then, as shown in FIG. 14, the small-diameter disk 2 </ b> B has a small diameter until the center hole 2 a is located on the back side of the straight line connecting the first front-side contact member 65 and the second front-side contact member 68. When the disk 2B is drawn into the housing 3, the first front-side contact member 65 and the second front-side contact member 68 are moved from the back side to the front side along the outer periphery of the small-diameter disk 2B. Wrap around. Then, in this state, the first front arm 61 and the second front member 68 are in contact with the front surface of the outer peripheral portion of the small-diameter disk 2B. The second rotating arm 62 is biased by the torsion coil spring 70 and is rotated in the direction close to each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG. As a result, the first rotating arm 61 and the second rotating arm 62 pull the small-diameter disk 2B to the disk mounting position shown in FIG. 15 while pressing the front surface side of the outer peripheral portion of the small-diameter disk 2B. .

The fourth rotating arm 79, by being pressed in a state where the fourth contact member 80 is abutted to the rear side of the outer peripheral portion of the small-diameter disk 2B, the arrow d ₁ shown in FIG. 14 Rotated in the direction. The fourth rotating arm 79 is brought into contact with the regulating piece 81 of the second rotating arm 62 when the small-diameter disk 2B is pulled in at the disk mounting position shown in FIG. It will be in the state.

  In this disk drive device 1, as shown in FIGS. 11 and 15, the first rotating arm 61 and the second rotating arm 62 draw the optical disks 2A and 2B having different outer diameters to the disk mounting position. At this time, the optical discs 2A and 2B are sandwiched inside the first front contact member 65, the first rear contact member 66, the second front contact member 68, and the fourth contact member 80. Thus, a centering operation for positioning the optical disks 2A and 2B having different outer diameters at the disk mounting position is performed. That is, the center holes 2a of the optical disks 2A and 2B having different outer diameters and the engaging protrusions 48a of the turntable 47 are made to coincide with each other in the direction orthogonal to the main surface of the optical disk 2.

  Next, in the disk drive device 1, after the above-described centering operation of the optical disk 2, the base lifting mechanism 90 raises the base 45, thereby causing the optical disk 2 positioned at the disk mounting position to move to the turntable of the disk mounting portion 41. The chucking operation to be attached to 47 is performed.

  Specifically, when the base 45 is raised from the chucking release position shown in FIG. 16 to the chucking position shown in FIG. 17 by the base lifting mechanism 90, the turntable 47 is rotated and inclined, and the engagement protrusion 48a is moved. The engaging protrusion 48a enters the center hole 2a of the optical disc 2 positioned at the disc mounting position, and the periphery of the center hole 2a of the optical disc 2 is pressed against the chucking plate 7 of the top plate portion 5a. At this time, as described above, the chucking plate 7 has an inclined surface 7a in which an inclination angle is provided on the surface facing the turntable 47 so as to be parallel to the turntable 47 that is rotated and inclined to the chucking position. Therefore, the inclined surface 7a and the turntable 47 sandwich the peripheral portion of the center hole 2a of the optical disc 2 positioned at the disc mounting position with an equal force, and the engagement protrusion 48a is held by the optical disc 2 Can be inserted into the central hole 2a.

  That is, the chucking plate 7 is formed on the surface of the turntable 47 facing the disc mounting position, with the inclined surface 7a having a thickness decreasing from the rotation fulcrum side of the base 45 to the tip side opposite to the rotation fulcrum side. For this reason, it can be brought into contact with the optical disk 2 together with the turntable 47 that is tilted in rotation, and the peripheral portion of the center hole 2a can be clamped with an equal force. Therefore, the depth at which the engaging protrusion 48a of the turntable 47 is inserted into the center hole 2a of the optical disk 2 is equal on the rotation fulcrum side and the tip end side of the base 45, and a plurality of formed on the engaging protrusion 48a. Each of the locking claws 48 b protrudes from the upper surface of the disk and can lock the periphery of the center hole 2 a of the optical disk 2, so that the optical disk 2 can be securely chucked to the turntable 47.

  When the optical disk 2 is held on the turntable 47 as described above, the base 45 is lowered to the intermediate position where the information signal is recorded and / or reproduced with respect to the optical disk shown in FIG. To do.

Further, in the disk drive device 1, after the above-described chucking operation, as shown in FIGS. 19 and 20, the first rotating arm 61 and the first rotating arm 61 are interlocked with the slide toward the back side of the drive lever 82. The two rotating arms 62 are slightly rotated in directions away from each other, that is, in the directions of arrows a ₂ and b ₂ shown in FIGS. 19 and 20. At this time, the fourth rotating arm 79 is rotated integrally with the second rotating arm 62 while being in contact with the regulating piece 81. The third rotating arm 76, in conjunction with the slide to the rear side of the driving lever 82 is slightly rotated in the direction of arrow c ₂ shown in FIGS. 19 and 20. Thereby, from the outer periphery of the optical disks 2A and 2B held by the turntable 47, the first front-side contact member 65, the first back-side contact member 66, the second front-side contact member 68, The third contact member 78 and the fourth contact member 80 are in a separated state.

  In this disk drive device 1, when a recording or reproduction command is sent from the personal computer 1000 from the states shown in FIGS. 18, 19, and 20, information signals are recorded on the optical disk 2 based on this command. Or reproduction is performed. Specifically, the spindle motor 49 rotates the optical disk 2 integrally with the turntable 47, and the optical pickup 43 is moved from the outer peripheral side to the inner peripheral side by the pickup feeding mechanism 44, so that focus servo control and tracking servo control are performed. As a result, the TOC data recorded in the lead-in area of the optical disc 2 is read. Thereafter, when the information signal is recorded, the optical pickup 43 moves to a predetermined address in the program area of the optical disc 2 based on the read TOC data. When reproducing the information signal, the optical pickup 43 moves to an address in the program area where the designated data is recorded. The optical pickup 43 performs an information signal writing or reading operation on a desired recording track of the optical disc 2.

  In the disk drive device 1, when an eject button 21 provided on the front panel 18 is pressed or an eject command is sent from the personal computer 1000 to the disk drive device 1, first, based on this command, The slide toward the front side of the drive lever 82 by the displacement drive mechanism is started.

Then, as shown in FIGS. 21 and 22, in conjunction with the slide of the drive lever 82 toward the front surface, the first rotating arm 61 and the second rotating arm 62 approach each other, that is, 21 and slightly rotated in the directions of arrows a ₁ and b ₁ shown in FIG. At this time, the fourth rotating arm 79 is rotated integrally with the second rotating arm 62 while being in contact with the regulating piece 81. Further, the third rotating arm 76 is slightly rotated in the direction of the arrow c ₁ shown in FIGS. 21 and 22 in conjunction with the slide of the drive lever 82 toward the front side.

  As a result, the first front-side contact member 65, the first back-side contact member 66, the second front-side contact member 68, the first optical disk 2A, 2B held on the turntable 47 are arranged on the outer peripheral portion. The third contact member 78 and the fourth contact member 80 are in contact with each other. In the case of the small-diameter disk 2B shown in FIG. 22, the fourth contact member 80 is separated from the outer peripheral portion of the small-diameter disk 2B.

  Next, in the disk drive device 1, the base lifting mechanism 90 lowers the base 45 to the chucking release position, thereby performing a chucking release operation for removing the optical disk 2 from the turntable 47 of the disk mounting portion 41. Specifically, when the base 45 is lowered to the chucking release position, the tip of the push-up pin 102 comes into contact with the non-signal recording area on the inner peripheral side of the optical disc 2 mounted on the turntable 47 of the disc mounting portion 41. As a result, while pushing up the optical disk 2, the engagement between the center hole 2 a of the optical disk 2 and the locking claw 48 b of the engaging protrusion 48 a is released, and the optical disk 2 is detached from the turntable 47.

Next, in the disk drive device 1, an ejecting operation for ejecting the optical disks 2 </ b> A and 2 </ b> B in the disk mounting portion 41 from the disk insertion / removal port 19 to the outside of the housing 3 is performed. Specifically, when ejecting the large-diameter disk 2A from the disk insertion / removal port 19 of the housing 3, first, as shown in FIG. rotating arm 79 is rotated in the direction of arrow d ₂ shown in Figure 23. Further, the fourth rotating arm 79 is in a state in which the fourth contact member 80 is in contact with the back side of the outer peripheral portion of the large-diameter disk 2A, so that the rear surface of the outer peripheral portion of the large-diameter disk 2A. The large-diameter disk 2A is pushed out of the housing 3 while pressing the side.

Then, as shown in FIG. 24, until the center hole 2a of the large-diameter disk 2A is located on the front side of the straight line connecting the first front-side contact member 65 and the second front-side contact member 68, When the large-diameter disc 2A is discharged to the outside of the housing 3, the first front-side contact member 65 and the second front-side contact member 68 are moved to the front side along the outer peripheral portion of the large-diameter disc 2A. From the back to the back. Then, the first rotating arm 61 is now in a state in which the first front-side contact member 65 and the second front-side contact member 68 are in contact with the back side of the outer peripheral portion of the large-diameter disk 2A. And the second rotating arm 62 are biased by the torsion coil spring 70 and are rotated in directions close to each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG. Thereby, the first rotating arm 61 and the second rotating arm 62 press the large diameter disk 2A in the disk insertion / removal position shown in FIG. 25 while pressing the back side of the outer peripheral portion of the large diameter disk 2A. The center hole 2a of the large-diameter disk 2A is pushed out from the disk insertion / removal opening 19 to a position where it is exposed to the outside of the housing 3.

The third rotating arm 76, by being pressed in a state where the third contact member 78 is brought into contact with the outer circumference of the large-diameter disk 2A, in the direction of arrow c ₂ shown in FIG. 24 It is rotated.

On the other hand, when the small-diameter disk 2B is ejected from the disk insertion / removal port 19 of the housing 3, first, as shown in FIG. 26, the fourth rotating arm is interlocked with the slide of the drive lever 82 to the front side. 79 is rotated in the direction of arrow _{d 2} shown in Figure 26. Further, the fourth rotating arm 79 is in a state where the fourth contact member 80 is in contact with the back side of the outer peripheral portion of the small-diameter disk 2B, so that the back side of the outer peripheral portion of the small-diameter disk 2B is moved. The small diameter disk 2B is pushed out of the housing 3 while being pressed.

27, until the center hole 2a of the small-diameter disk 2B is positioned on the front side of the straight line connecting the first front-side contact member 65 and the second front-side contact member 68, When the disk 2B is ejected to the outside of the housing 3, the first front-side contact member 65 and the second front-side contact member 68 are moved from the front side to the back side along the outer periphery of the small-diameter disk 2B. Wrap around. Then, this time, with the first front-side contact member 65 and the second front-side contact member 68 in contact with the back side of the outer peripheral portion of the small-diameter disk 2B, The second rotating arm 62 is biased by the torsion coil spring 70 and is rotated in the direction close to each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG. Thereby, the first rotating arm 61 and the second rotating arm 62 push the small diameter disk 2B to the disk insertion / removal position shown in FIG. 28 while pressing the back side of the outer peripheral portion of the small diameter disk 2B. Become.

The third rotating arm 76, by being pressed in a state where the third contact member 78 is brought into contact with the outer circumference of the small-diameter disk 2B, times in the direction of arrow c ₂ shown in FIG. 27 Moved.

  As described above, each optical disk 2 pushed out to the disk insertion / removal position by the first rotation arm 61 and the second rotation arm 62 is discharged out of the housing 3 from the disk insertion / removal opening 19 of the front panel 18. Is done.

  The present invention is not limited to the one applied to the slot-in type disk drive device 1 mounted on the above-described notebook type personal computer 1000, and recording and / or reproducing information signals with respect to the optical disk. The present invention is widely applicable to household and vehicle-mounted disk drive devices and game machines.

1 is a perspective view showing an appearance of a notebook personal computer equipped with a disk drive device. FIG. It is an external appearance perspective view which shows the disc drive apparatus which discharged the optical disk to the optimal discharge position. It is the perspective view which looked at the top cover from the inner surface side. It is a side view which shows a mode that an optical disk is chucked to a turntable by pinching an optical disk with a chucking plate and a turntable. It is a top view which shows the structure of a disk drive apparatus. It is a perspective view which shows the structure of a base unit. It is a figure for demonstrating operation | movement of a disk drive apparatus, and is a top view which shows an initial state. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the insertion start state of a large diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the drawing start state of a large diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the drawing-in state at the time of drawing-in of a large diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the centering state of a large diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the insertion start state of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the drawing start state of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the drawing-in state at the time of drawing-in of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the centering state of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a side view which shows the state which has a base unit in a chucking release position. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a side view which shows the state which has a base unit in a chucking position. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a side view which shows the state which has a base unit in an intermediate position. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the chucking state of a large diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the chucking state of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the chucking cancellation | release state of a large diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the chucking cancellation | release state of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the ejection start state of a large diameter disc. It is a figure for demonstrating operation | movement of a disk drive apparatus, and is a top view which shows the extrusion state at the time of discharge | emission of a large diameter disk. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the ejection state of a large diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the ejection start state of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the extrusion state at the time of discharge | emission of a small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the ejection state of a small diameter disc. In the conventional disk drive apparatus, it is a side view which shows a mode that an optical disk is chucked on a turntable by pinching an optical disk with a chucking plate and a turntable.

Explanation of symbols

1 disk drive device, 2 optical disk, 3 housing, 7 chucking plate, 7a inclined surface, 18 front panel, 19 disk insertion / removal port, 40 base unit, 41 disk mounting part, 42 disk rotation drive mechanism, 43 optical pickup, 44 Pickup feed mechanism, 45 base, 47 turntable, 48 chucking mechanism, 48a engaging protrusion, 48b locking claw, 61, 62 first and second rotating arms, 64 first support shaft, 70 torsion coil spring 71 coupling mechanism, 90 base lifting mechanism

Claims (3)

An apparatus body consisting of a bottom case and a top cover;
A disk transport mechanism for transporting the optical disk across the inside and outside of the apparatus body;
A disk rotation drive mechanism comprising: a turntable for rotatably holding the optical disk transported into the apparatus main body; and a locking protrusion for locking the optical disk on the turntable;
The turntable is pivoted and tilted toward the top cover side to chuck the optical disc to the locking projection, and the turntable is pivoted and tilted toward the bottom case side to release chucking of the optical disc. Along with the chucking release position where the locking projection is retracted from the optical disk transport area and the intermediate position where the optical disk is rotated by rotating between the chucking position and the chucking release position. Elevating mechanism
The optical disc is held on the top cover by clamping the optical disc placed on the turn table, which is provided on the top cover so as to be opposed to the turn table, and is rotated and inclined to the chucking position, together with the turn table. A chucking plate to be locked to the stop projection,
An optical pickup for recording and / or reproducing information signals with respect to the optical disc;
A pickup moving mechanism for moving the optical pickup over the radial direction of the optical disc,
The disk recording and / or reproducing apparatus according to claim 1, wherein the chucking plate is provided with an inclined surface parallel to the turntable that is rotated and inclined to the chucking position.   2. The disk recording and / or reproducing apparatus according to claim 1, wherein the chucking plate is provided integrally with or separately from the top cover. The disk transport mechanism, the disk rotation driving mechanism, the optical pickup, and the pickup moving mechanism are integrally assembled to a base, and constitutes a base unit in which one end of the base is rotatably supported by the bottom case,
2. The disk recording and / or reproducing apparatus according to claim 1, wherein the elevating mechanism rotates the other end of the base unit toward the bottom case and the top cover.

Images