JP4613529B2 - Disk drive device - Google Patents

Description

  The present invention relates to a disk drive device that records and / or reproduces information signals with respect to an optical disk, and more particularly to a slot-in type disk drive device that is compatible with disks having different outer diameters.

  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 housing is opened, and the disc is directly mounted on the turntable facing from the housing, and the disc is placed on the disc tray that is horizontally removed from the housing. 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 simply by inserting a disk from a disk insertion / removal opening provided on the front surface of a housing. 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 inside into the housing and an ejection operation for ejecting the disk from the disk insertion / removal port to the outside of the housing 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. The rotating arms are arranged, and each rotating arm is rotated in a plane parallel to the disk while the abutting portion provided at the tip of the rotating arm is in contact with the outer peripheral portion of the disk. A disk that performs a loading operation for drawing the disk from the disk insertion / removal opening into the housing, a centering operation for positioning the disk on the turntable, and an ejection operation for ejecting the disk from the disk insertion / removal opening to the outside of the housing A drive device has been proposed (see, for example, Patent Document 1).

  However, since the disk drive device described in the above-mentioned Patent Document 1 can be used only for a standard size disk having a diameter of 12 cm, the recording used for a disk having a different outer diameter from the standard size, such as a single CD or a camcorder. When a small-diameter disk having a diameter of 8 cm, such as a commercial DVD, is inserted from the disk insertion / removal slot, the small-diameter disk is forcibly ejected from the disk insertion / removal slot. In other words, in the disk drive device described in Patent Document 1, it is not possible to carry a disk having different outer diameters by a plurality of rotating arms. For this reason, a thin slot-in disk drive device capable of transporting disks having different outer diameters by a plurality of rotating arms is desired.

  By the way, in the disk drive device described in Patent Document 1 described above, after the disk is pulled into the casing, the disk is pressed against the top plate of the casing by the rise of the base, thereby mounting the disk on the turntable. King operation is performed. On the other hand, in this disk drive device, a chucking releasing operation for releasing the disk mounted on the turntable by the lowering of the base is performed while the plurality of rotating arms described above hold the outer periphery of the disk. For this reason, when the base is lowered on the bottom surface of the housing, the tip is brought into contact with the non-signal recording area inside the disc mounted on the turntable, and the push-up pin for pushing up the disc is upward. It protrudes toward the end.

  Here, when considering a disk drive device that transports disks having different outer diameters using the plurality of rotating arms described above, in a state where the small diameter disk is mounted on the turntable among the large diameter disk and the small diameter disk. When the chucking release operation of this small-diameter disk is performed, the load applied to the abutting portion of the above-mentioned rotating arm increases due to the difference in outer diameter between the large-diameter disk and the small-diameter disk, and the rotating arm has a small diameter. There is a very high possibility that a small-diameter disk cannot be properly unchunked from the turntable without being able to hold the outer periphery of the disk.

JP 2002-117604 A

  Therefore, the present invention has been proposed in view of such a conventional situation, and provides a disk drive device capable of appropriately and reliably performing chucking releasing operation of optical disks having different outer diameters. For the purpose.

  In order to achieve this object, a disk drive device according to the present invention includes a housing provided with a disk insertion / removal opening through which a large-diameter and a small-diameter optical disk having different outer diameters are inserted / removed, and a disk insertion / removal opening. A disk mounting portion on which an optical disk inserted into the housing is mounted; a disk rotation driving mechanism for rotating the optical disk mounted on the disk mounting portion; and an optical disk rotated by the disk rotation driving mechanism. And an optical pickup for writing and / or reading signals to and from the optical disk, and a pickup feeding mechanism for moving the optical pickup in the radial direction of the optical disk. The optical disk is loaded into the disk loading / unloading position where the optical disk is inserted / removed from the outlet and the disk loading part A disk transport mechanism that transports an optical disk having a different outer diameter from the disk mounting position, a chucking position where the optical disk is mounted on the disk mounting part by raising the base, and a base is lowered from the disk mounting part. A base lifting mechanism that lifts and lowers the base between the chucking release position for removing the optical disk and a plurality of push-up members that protrude upward from the bottom surface of the housing. When lowered to the chucking release position, a plurality of push-up members are brought into contact with the large-diameter or small-diameter optical disk mounted on the disk mounting portion, and the large-diameter or small-diameter from the disk mounting portion is pushed up by pushing up the disk. It is characterized in that a chucking releasing operation for removing the optical disk is performed.

  As described above, in the disk drive device according to the present invention, the plurality of push-up members push up the large-diameter or small-diameter optical disk mounted on the disk mounting portion by lowering the base. It is possible to appropriately and reliably perform the chucking release operation.

  Hereinafter, a disk drive device 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 device 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 (hereinafter referred to as a small diameter disk). It can be supported.

  First, a specific configuration of the disk drive device 1 will be described.

  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 28a of the turntable 23a 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 5a slightly protrudes toward the inside of the housing 3 so as to come into contact with the periphery of the center hole 2a of the optical disc 2 held on the turntable 23a. A contact protrusion 7 is formed.

  On the inner main surface of the top plate portion 5a, a distal end portion of a first rotating arm 35 and a distal end portion of a second rotating arm 36, 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. As a result, the front end portion of the first rotating arm 35 and the front end portion of the second rotating arm 36 are engaged between the step portion 8a on the back side of the guide member 8 and the top plate portion 5a. Guide grooves 9 are formed. The top plate portion 5a has working window portions 10 for engaging the guide groove 9 with the tip portion of the first turning arm 35 and the tip portion of the second turning arm 36, respectively. Is provided.

  As shown in FIG. 4, 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 in the bottom of the bottom case 4, electronic components such as an IC chip constituting the drive control circuit, connectors for electrical connection of each part, detection for detecting the operation of each part A circuit board on which a switch or the like is 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.

  The top cover 4 is attached to the bottom case 5 by screws as shown in FIG. 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. 4, a plurality of fixed pieces 15 bent at substantially right angles are provided on the outer peripheral edge of the bottom case 4, and these fixed 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) is attached to the top plate portion 5a of the top cover 5 after the assembly so as to cover the opening 6 and the working window 10 described above. 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.

  As shown in FIGS. 4 and 5, the disk drive device 1 includes a base unit 22 that constitutes a drive body on the bottom surface of the bottom case 4.

  The base unit 22 includes a disk mounting portion 23 to which the optical disk 2 inserted into the housing 3 from the disk insertion / removal opening 19 is mounted, and a disk rotation drive for rotating the optical disk 2 mounted to the disk mounting section 23. A mechanism 24; an optical pickup 25 that writes or reads signals to / from the optical disk 2 that is rotationally driven by the disk rotation driving mechanism 24; and a pickup feeding mechanism 26 that feeds the optical pickup 25 in the radial direction of the optical disk 2. These have an ultra-thin structure provided integrally with the base 27.

  The base unit 22 is disposed on the front side of the chassis 11 so that the disk mounting portion 23 is located substantially in the center on the bottom surface of the bottom case 4. The base unit 22 can be moved up and down by a base lifting mechanism 55 described later, and is positioned below the optical disk 2 inserted into the housing 3 from the disk insertion / removal port 19 in the initial state. .

  The base 27 is formed by punching a sheet metal into a predetermined shape and bending the periphery slightly downward. On the main surface of the base 27, a substantially semicircular table opening 27a for facing a turntable 23a of a disk mounting portion 23 described later upward, and an objective lens 25a for an optical pickup 25 described later facing upward. A substantially rectangular pickup opening 27b is continuously formed. A decorative board (not shown) in which openings corresponding to the openings 27a and 27b are formed is attached to the upper surface of the base 27.

  The disc mounting portion 23 has a turntable 23a that is rotationally driven by a disc rotation drive mechanism 24, and a chucking mechanism 28 for mounting the optical disc 2 is provided at the center of the turntable 23a. The chucking mechanism 28 includes an engaging projection 28a 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 projection 28a. The optical disc 2 is held on the turntable 23a.

  The disk rotation drive mechanism 24 has a flat spindle motor 24a that rotates the optical disk 2 integrally with the turntable 27a. The spindle motor 24a is a table whose base 27 is a turntable 23a provided on the upper surface. It is attached to the lower surface of the base 27 by screws so as to slightly protrude from the opening 27a.

  The optical pickup 25 condenses the light beam emitted from the semiconductor laser serving as the light source by the objective lens 25 a 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 disc 2.

  In addition, the optical pickup 25 includes an objective lens such as a biaxial actuator that drives the objective lens 25a to move in an optical axis direction (referred to as a focusing direction) and a direction orthogonal to a recording track of the optical disc (referred to as a tracking direction). Based on the detection signal from the optical disk 2 that has a drive mechanism and is detected by the above-described photodetector, the signal recording of the optical disk 2 is performed while the objective lens 25a is displaced in the focusing direction and the tracking direction by the biaxial actuator. Drive control is performed such as a focus servo for focusing the objective lens 25a on the surface and a tracking servo for causing the spot of the light beam condensed by the objective lens 25a 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 25a 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 25a with respect to the recording surface may be used.

  The pickup feeding mechanism 26 includes a pickup base 29 on which the optical pickup 25 is mounted, a pair of guide shafts 30a and 30b that support the pickup base 29 so as to be slidable in the radial direction of the optical disc 2, and the pair of guide shafts 30a and 30a. It has a displacement drive mechanism 31 that drives the pickup base 29 supported by 30b in the radial direction of the optical disc 2.

  Of the pair of guide shafts 30a and 30b, the pickup base 29 is formed with a pair of guide pieces 32a and 32b formed with a guide hole through which one guide shaft 30a is inserted, and a guide groove for sandwiching the other guide shaft 30b. The guide pieces 33 are formed so as to protrude from the side surfaces facing each other. Thereby, the pickup base 29 is slidably supported by the pair of guide shafts 30a and 30b.

  The pair of guide shafts 30a and 30b are disposed on the lower surface of the base 27 so as to be parallel to the radial direction of the optical disc 2, and the optical pickup 25 is exposed to the optical pickup 25 from the pickup opening 27b of the base 27. 2 is guided over the inner and outer peripheries.

  The displacement drive mechanism 31 converts the rotational drive of the drive motor 31a attached to the base 27 into linear drive via a gear or a rack (not shown), and moves the pickup base 29 along a pair of guide shafts 30a and 30b. 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. 4, 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 23a of the disk mounting portion 23. And a disk transport mechanism 34 for transporting the optical disk 2 between them.

  The disk transport mechanism 34 is used as a support member that is operated to move between the main surface of the top plate portion 5a facing the disk mounting portion 23 and the main surface of the optical disk 2 inserted from the disk insertion / removal port 19. The first pivot arm 35 and the second pivot arm 36 are swingable within a plane parallel to the two main surfaces.

  The first rotating arm 35 and the second rotating arm 36 are arranged on both the left and right sides of the disc mounting portion 23, respectively, and are proximal end portions located on the back side of the disc mounting portion 23, respectively. Is supported in a rotatable manner, and the front end portion located on the front side of the disc mounting portion 23 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 35 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. 4) sandwiching the turntable 23a of the disk mounting portion 23. via the first support shaft 37 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 38 that abuts on the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19 protrudes downward from the tip of the first rotating arm 35. It has been. Further, in the vicinity of the base end portion of the first rotating arm 35, when the optical disc 2 is positioned at the disc mounting position, the first front-side abutting member 38 and the outer peripheral portion of the optical disc 2 are abutted. One rear side contact member 39 is provided so as to protrude downward.

  The first front contact member 38 and the first rear contact member 39 are made of a softer resin than the optical disc 2 and are in contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion opening 19. Are curved inward, and have flange portions 38a and 39a whose both end portions are enlarged in diameter to restrict the movement of the optical disc 2 in the height direction. The first front-side contact member 38 and the first back-side contact member 39 have a small diameter that is rotatably attached to the main surface of the first rotating arm 35 that faces the disc mounting portion 23. It may be a rotating roller.

On the other hand, the second rotating arm 36 is made of a long sheet metal, and is located on the other left and right sides (for example, the left side in FIG. 4) sandwiching the turntable 23a of the disc mounting portion 23, and has a base end portion. There through the first support shaft 37 provided on the chassis 11, and is rotatably supported in the arrow b ₁ direction and the arrow b ₂ direction. A second front-side abutting member 40 that abuts on the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19 protrudes downward from the tip of the second rotating arm 36. It has been.

  The second front-side contact member 40 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 40a 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 40 may be a small-diameter rotating roller that is rotatably attached to the main surface of the second rotating arm 36 that faces the disk mounting portion 23.

  As described above, the first rotation arm 35 and the second rotation arm 36 are arranged at positions that are substantially symmetrical with respect to the turntable 23a of the disk mounting portion 23, and the respective rotation centers are located. They coincide with each other at a substantially central portion on the back side of the disc mounting portion 23. Further, the distal end portion of the first rotation arm 35 and the distal end portion of the second rotation arm 36 are slidable along the rotation direction while being engaged with the guide groove 9 of the top plate portion 5a. It is supported by.

  The disk transport mechanism 34 has an interlocking mechanism 41 for interlocking the first rotating arm 35 and the second rotating arm 36, and the first rotating arm is connected via the interlocking mechanism 41. 35 and the second rotation arm 36 are rotatable in opposite directions.

  Specifically, the interlocking mechanism 41 includes a first connecting arm 42 and a second connecting arm 43 that connect the first rotating arm 35 and the second rotating arm 36. The first connecting arm 42 and the second connecting arm 43 are made of a long sheet metal, and one end in the longitudinal direction of each of the first connecting arm 42 and the second connecting arm 43 is the base end of the first rotating arm 35 and the second rotating arm. 36 has a so-called pantograph structure in which the other end portion in the longitudinal direction is rotatably supported via a second support shaft 44. The second support shaft 44 is engaged with a guide slit 45 provided on the front side of the first support shaft 37 of the chassis 11, and the guide slit 45 extends in the insertion direction of the optical disc 2. It is formed in a straight line.

  Therefore, the first rotating arm 35 and the second rotating arm 36 are configured such that the first connecting arm 42 and the second connecting arm 43 are formed by the second support shaft 44 sliding in the guide slit 45. It is possible to rotate in opposite directions via each other. That is, the distal end portion of the first rotating arm 35 and the distal end portion of the second rotating arm 36 can be swung in the direction of approaching or separating from each other by such an interlocking mechanism 41.

  In addition, a torsion coil spring (not shown), which is an urging means for urging the rotating arms 35 and 36 toward each other, is provided at the base end portions of the first rotating arm 35 and the second rotating arm 36. Z.) is provided.

  The disk transport mechanism 34 is parallel to the main surface of the optical disk 2 inserted from the disk insertion / removal opening 19 as a loading assisting means for assisting a loading operation for drawing the optical disk 2 into the housing 3 from the disk insertion / removal opening 19. A third rotating arm 46 that is swingable in the plane is provided.

The third rotation arm 46 is made of a long sheet metal, and is located on the front side of the second rotation arm 36 on one of the left and right sides (for example, the left side in FIG. 4) sandwiching the turntable 23a of the disk mounting portion 23. located on the side, via a support shaft 47 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 48 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 46. Yes.

  The third abutting member 48 is a small-diameter rotating roller that is rotatably attached to the main surface of the third rotating arm 46 that faces the top plate portion 5a, and is made of a softer resin than the optical disc 2. In addition, the third contact member 48 is a flange portion 40a in which 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 expanded 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 disk transport mechanism 34 is parallel to the 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. A fourth rotating arm 49 that can be swung in a smooth plane is provided.

The fourth rotation arm 49 is made of a long sheet metal, and is an intermediate portion of the second rotation arm 36 on one side on the left and right sides (for example, the left side in FIG. 4) sandwiching the turntable 23a of the disk mounting portion 23. in, and is rotatably supported in the arrow d ₁ direction and the arrow d ₂ direction. A fourth abutting member 50 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 49. Is provided.

  The fourth contact member 50 is made of a softer resin than the optical disc 2, the 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 expanded in diameter. The flange portion 50a has a substantially drum shape that restricts the movement of the optical disc 2 in the height direction. The fourth abutting member 50 may be a small-diameter rotating roller that is rotatably attached to the main surface of the fourth rotating arm 49 that faces the top plate portion 5a.

Further, the second rotating arm 36, the fourth rotating arm 49 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 49 A restricting piece 51 for restricting the rotation is provided.

  The disk transport mechanism 34 has a drive lever 52 for causing the above-described rotating arms 35, 36, 46, 49 to cooperate. The drive lever 52 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 22 on the bottom surface portion of the bottom case 4. The drive lever 52 is located below the optical disk 2 inserted into the housing 3 from the disk insertion / removal port 19 and has a top surface substantially equal to the bottom surface of the deck section 4a. Have. The drive lever 52 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 34, the above-described second support shaft 44 slides in the guide slit 45 in conjunction with the slide operation of the drive lever 52. Thereby, the first rotation arm 35 and the second rotation arm 36 are rotated in the opposite directions via the interlocking mechanism 41. A guide pin 54 that is engaged with a guide slit 53 provided on the upper surface of the drive lever 52 is provided on the proximal end side of the third rotating arm 46. Accordingly, the third rotating arm 46 is rotated by the guide pin 54 sliding in the guide slit 53 in conjunction with the sliding operation of the drive lever 52. The fourth turning arm 49 is also turned in conjunction with the slide operation of the drive lever 52 via a coupling mechanism (not shown).

  In the disk transport mechanism 34, the first rotating arm 35, the second rotating arm 36, the third rotating arm 46, and the fourth rotating arm 49 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. 4, the disk drive device 1 includes a base lifting mechanism 55 that moves the base 27 up and down in conjunction with the slide of the drive lever 52 described above.

  The base elevating mechanism 55 raises the base 27 and lowers the chucking position where the optical disk 2 positioned at the disk mounting position is mounted on the turntable 23a of the disk mounting section 23, and the base 27 is moved downward. A chucking release position for detaching the optical disk 2 from the turntable 23a, and an intermediate position where the base 27 is positioned between the chucking position and the chucking release position and a signal is recorded or reproduced on the optical disk 2. The base 27 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 52 that faces the base 27. Is formed.

  A cam lever 56 is disposed on the bottom surface of the bottom case 4 along the side surface on the back side of the base 27. The cam lever 56 is composed of a long flat plate member, and is slid in a direction substantially perpendicular to the sliding direction of the drive lever 52 in conjunction with the sliding of the drive lever 52 in the front-rear direction. In addition, a cam piece 57 that is bent upward from an edge portion facing the base 27 is provided at an intermediate portion of the cam lever 56. A cam slit (not shown) corresponding to the chucking position, the chucking release position, and the intermediate position is formed in the cam piece 57 in the longitudinal direction.

  A bent piece 58 is formed on the bottom surface of the bottom case 4 along the side surface on the back side of the base 27. A vertical slit (not shown) for raising and lowering the base 27 is formed in the bent piece 58 over the vertical direction.

  On the other hand, as shown in FIG. 5, the base 27 is positioned on the side of the disk mounting portion 23 on the side facing the drive lever 52 and is supported by being engaged with the cam slit of the drive lever 52. The second support shaft 59 is located on the side of the disc mounting portion 23 on the side facing the cam lever 56 and is engaged with and supported by the cam slit of the cam piece 57 and the vertical slit of the bent piece 58. 60 and a third side which is rotatably supported by a shaft hole 61 provided on the side surface on the other side of the bottom case 4, located on the front side of the side surface opposite to the side surface facing the drive lever 52. Located on the front side of the side opposite to the side facing the support shaft 62 and the cam lever 56, is fixedly supported by a screw 64 on the bottom surface of the bottom case 4 via an insulator 63 made of a viscoelastic member such as rubber. Fixed support 65 The has.

  Therefore, in the base lifting mechanism 55, the first support shaft 59 slides in the cam slit of the drive lever 52 in conjunction with the slide of the drive lever 52 and the cam lever 56, and the second support shaft 60 is the cam lever 56. By sliding the cam slit and the vertical slit of the bent piece 58, the disk mounting portion 23 side of the base 27 is located between the chucking position, the chucking release position, and the intermediate position with respect to the front surface side. Raised and lowered.

  As shown in FIG. 4, when the base lifting mechanism 55 lowers the base 27, the optical disk 2 mounted on the turntable 23 a of the disk mounting portion 23 is placed on the bottom surface of the bottom case 4. A push-up pin 66 is provided as a chucking release means for detaching from 23a. The push-up pin 66 is located in the vicinity of the disc mounting portion 23 of the base unit 22, specifically, on the back side of the base 27 closest to the disc mounting portion 23, 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. 6, in the initial state before the optical disk 2 is inserted, the first rotating arm 35 and the second rotating arm 36 have predetermined tip portions. It is held open at a spread angle. Further, the third rotating arm 46 is held in a state in which the distal end portion is located outside the proximal end portion and the distal end portion is located on the front side of the proximal end portion. Further, the fourth rotating arm 49 is held in a state where the distal end portion is located on the inner side of the base end portion and the distal end portion is located on the front side of the base end portion. The drive lever 52 is located on the front side of the bottom case 4.

  In this disk drive apparatus 1, even when optical disks 2A and 2B having different outer diameters are inserted from the disk insertion / removal opening 19 of the housing 3, a loading operation is performed to pull these optical disks 2A and 2B to the disk mounting position. Is possible.

  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. 7, the large diameter inserted from the disk insertion / removal opening 19 into the housing 3 is inserted. A state in which the rear side of the outer peripheral portion of the disk 2A is in contact with the first front-side contact member 38 of the first rotation arm 35 and the second front-side contact member 40 of the second rotation arm 36; Become.

Next, as shown in FIG. 8, 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 35, the second rotating arm 36, Sandwiches the outer peripheral portion of the large-diameter disk 2A between the first front-side contact member 38 and the second front-side contact member 40. At this time, in a state where the first front-side contact member 38 and the second front-side contact member 40 are in contact with the back side of the outer peripheral portion of the large-diameter disk 2A, The second rotating arm 36 is rotated in the 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.

  When the first rotation arm 35 and the second rotation arm 36 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 52 is started.

Thus, the third rotating arm 46 is rotated in the direction of arrow c ₁ shown in FIG. Further, the third rotating arm 46 is in a state where the third contact member 48 is in contact with the front surface side of the outer peripheral portion of the large-diameter disk 2A, so that 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. 9, 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 38 and the second front-side contact member 40, When the large-diameter disk 2A is drawn into the housing 3, the first front-side abutting member 38 and the second front-side abutting member 40 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 35 is now in a state in which the first front-side contact member 38 and the second front-side contact member 40 are in contact with the front side of the outer peripheral portion of the large-diameter disk 2A. And the second rotating arm 36 are biased by the torsion coil springs and rotated in directions close to each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG.

  Thus, the first rotating arm 35 and the second rotating arm 36 pull the large-diameter disk 2A to the disk mounting position shown in FIG. 10 while pressing the front side of the outer peripheral portion of the large-diameter disk 2A. become.

Further, the fourth rotating arm 49 is pressed in a state in which the fourth contact member 50 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. Then, when the large-diameter disk 2B is pulled in at the disk mounting position shown in FIG. 10, the fourth rotating arm 49 is brought into contact with the regulating piece 51 of the second rotating arm 36, and the rotation is performed. It becomes a regulated state.

  On the other hand, when the small-diameter disk 2B is inserted from the disk insertion / removal port 19 of the housing 3, first, as shown in FIG. 16, the outer periphery of the small-diameter disk 2B inserted into the housing 3 from the disk insertion / removal port 19 The back side of the first part is in contact with the first front side contact member 38 of the first rotation arm 35 and the second front side contact member 40 of the second rotation arm 36.

Next, as shown in FIG. 17, 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 35 and the second rotating arm 36 are moved. The outer peripheral portion of the small-diameter disk 2B is sandwiched between the first front-side contact member 38 and the second front-side contact member 40. At this time, in a state where the first front surface side contact member 38 and the second front surface side contact member 40 are in contact with the back surface side of the outer peripheral portion of the small-diameter disk 2B, The two rotating arms 36 are rotated 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.

  When the first rotation arm 35 and the second rotation arm 36 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 52 is started.

Thus, the third rotating arm 46 is rotated in the direction of arrow c ₁ shown in FIG. 17. Further, the third rotating arm 46 is in a state where the third contact member 48 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.

18, until the center hole 2a of the small-diameter disk 2B is located on the back side with respect to the straight line connecting the first front-side contact member 38 and the second front-side contact member 40, as shown in FIG. When the disk 2B is pulled into the housing 3, the first front-side contact member 38 and the second front-side contact member 40 move from the back side to the front side along the outer periphery of the small-diameter disk 2B. Wrap around. Then, this time, with the first front-side contact member 38 and the second front-side contact member 40 in contact with the front surface side of the outer peripheral portion of the small-diameter disk 2B, The second turning arm 36 is biased by the torsion coil spring and is turned in the direction approaching each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG.

  Accordingly, the first rotating arm 35 and the second rotating arm 36 pull the small-diameter disk 2B to the disk mounting position shown in FIG. 19 while pressing the front side of the outer peripheral portion of the small-diameter disk 2B. .

The fourth rotating arm 49, by being pressed in a state where the fourth contact member 50 is abutted to the rear side of the outer peripheral portion of the small-diameter disk 2B, the arrow d ₁ shown in FIG. 18 Rotated in the direction. When the small-diameter disk 2B is pulled in at the disk mounting position shown in FIG. 19, the fourth rotating arm 49 is brought into contact with the regulating piece 51 of the second rotating arm 36, and its rotation is restricted. It will be in the state.

  In this disk drive device 1, as shown in FIGS. 10 and 19, the first rotating arm 35 and the second rotating arm 36 draw the optical disks 2A and 2B having different outer diameters to the disk mounting position. In this case, the optical discs 2A and 2B are sandwiched inside the first front contact member 38, the first rear contact member 39, the second front contact member 40, and the fourth contact member 50. 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 28a of the turntable 23a are made to coincide with each other in the direction orthogonal to the main surface of the disk 2.

  Next, in the disk drive device 1, after the above-described centering operation of the optical disk 2, the base lifting mechanism 55 raises the base 27, so that the optical disk 2 positioned at the disk mounting position is moved to the turntable of the disk mounting unit 23. A chucking operation to be attached to 23a is performed.

  Specifically, when the base 27 is raised from the chucking release position shown in FIG. 26 to the chucking position shown in FIG. 27 by the base elevating mechanism 55, it engages with the center hole 2a of the optical disk 2 positioned at the disk mounting position. While the portion 28a enters, the periphery of the center hole 2a of the optical disc 2 is pressed against the abutting projection 7 of the top plate portion 5a, whereby the engagement projection 28a is engaged with the center hole 2a of the optical disc 2, and The optical disk 2 is held on the turntable 23a with the plurality of locking claws 28b locking the periphery of the center hole 2a of the optical disk 2. Then, with the optical disk 2 being held on the turntable 23a, the base 27 is lowered to the intermediate position shown in FIG.

Further, in the disk drive device 1, after the above-described chucking operation, as shown in FIGS. 11 and 20, the first rotating arm 35 and the first rotating arm 35 are interlocked with the slide toward the back side of the drive lever 52. The two rotating arms 36 are slightly rotated in directions away from each other, that is, in the directions of arrows a ₂ and b ₂ shown in FIGS. At this time, the fourth rotating arm 49 is rotated integrally with the second rotating arm 36 while being in contact with the regulating piece 51. The third rotating arm 46, in conjunction with the slide to the rear side of the driving lever 52 is slightly rotated in the direction of arrow c ₂ shown in FIGS. 11 and 20.

  Thereby, from the outer peripheral part of the optical disks 2A and 2B held by the turntable 23a, the first front-side contact member 38, the first back-side contact member 39, the second front-side contact member 40, The third contact member 48 and the fourth contact member 50 are in a separated state.

  In the disk drive device 1, when a recording or reproduction command is sent from the personal computer 1000 from the state shown in FIGS. 11, 20, and 28, an information signal is recorded on the optical disk 2 based on the command. Or reproduction is performed. Specifically, the spindle motor 24a rotates the optical disk 2 integrally with the turntable 23a, and the optical pickup 25 is moved from the outer peripheral side to the inner peripheral side by the pickup feeding mechanism 26, so that the 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 25 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 25 moves to an address in the program area where the designated data is recorded. The optical pickup 25 performs an information signal writing or reading operation on a desired recording track of the optical disc 2.

  In this disk drive device 1, when an eject button 21 provided on the front panel 20 is pressed or an ejection command is sent from the personal computer 1000 to the disk drive device 1, first, based on this command, Then, sliding of the drive lever 52 to the front side by the displacement drive mechanism is started.

Then, as shown in FIGS. 12 and 21, in conjunction with the sliding of the drive lever 52 to the front side, the direction in which the first rotating arm 35 and the second rotating arm 36 are close to each other, that is, FIG. 12 and slightly rotated in the directions of arrows a ₁ and b ₁ shown in FIG. At this time, the fourth rotating arm 49 is rotated integrally with the second rotating arm 36 while being in contact with the regulating piece 51. Further, the third rotating arm 46 is slightly rotated in the direction of the arrow c ₁ shown in FIGS. 12 and 21 in conjunction with the slide of the drive lever 52 toward the front side.

  As a result, the first front-side contact member 38, the first back-side contact member 39, the second front-side contact member 40, the first front-side contact member 40, the outer periphery of the optical discs 2A and 2B held by the turntable 23a. The third contact member 48 and the fourth contact member 50 are in contact with each other. In the case of the small-diameter disk 2B shown in FIG. 21, the fourth contact member 50 is separated from the outer peripheral portion of the small-diameter disk 2B.

  Next, in the disk drive device 1, the base lifting mechanism 55 lowers the base 27 to the chucking release position, thereby performing a chucking release operation for removing the optical disk 2 from the turntable 23 a of the disk mounting portion 23.

  Specifically, when the base 27 is lowered to the chucking release position, the tip of the push-up pin 66 comes into contact with the non-signal recording area on the inner circumference side of the optical disc 2 mounted on the turntable 23a of the disc mounting portion 23. As a result, the optical disk 2 is detached from the turntable 23a while pushing up the optical disk 2.

  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 23 from the disk insertion / removal port 19 to the outside of the housing 3 is performed.

Specifically, when the large-diameter disk 2A is ejected from the disk insertion / removal port 19 of the housing 3, first, as shown in FIG. rotating arm 49 is rotated in the direction of arrow d ₂ shown in FIG. In addition, the fourth rotating arm 49 is in a state in which the fourth contact member 50 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. 14, 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 38 and the second front-side contact member 40, When the large-diameter disk 2A is ejected to the outside of the housing 3, the first front-side contact member 38 and the second front-side contact member 40 are front-side along the outer periphery of the large-diameter disk 2A. From the back to the back. Then, the first rotating arm 35 is now in a state where the first front-side contact member 38 and the second front-side contact member 40 are in contact with the back side of the outer peripheral portion of the large-diameter disk 2A. And the second rotating arm 36 are biased by the torsion coil springs and rotated in directions close to each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG.

The third rotating arm 46, by being pressed in a state where the third contact member 48 is brought into contact with the outer circumference of the large-diameter disk 2A, in the direction of arrow c ₂ shown in FIG. 14 It is rotated.

  Then, the first rotating arm 35 and the second rotating arm 36 press the large diameter disk 2A in the disk insertion / removal position shown in FIG. The center hole 2a of the diameter disk 2A is pushed out from the disk insertion / removal opening 19 to a position exposed to the outside of the housing 3.

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. 22, the fourth rotating arm is interlocked with the slide of the drive lever 52 to the front side. 49 is rotated in the direction of arrow _{d 2} shown in Figure 22. Further, the fourth rotating arm 49 is in a state in which the fourth contact member 50 is in contact with the back side of the outer peripheral portion of the small-diameter disc 2B, so that the back side of the outer peripheral portion of the small-diameter disc 2B is moved. The small diameter disk 2B is pushed out of the housing 3 while being pressed.

23, 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 38 and the second front-side contact member 40, When the disk 2B is ejected to the outside of the housing 3, the first front-side contact member 38 and the second front-side contact member 40 are moved from the front side to the back side along the outer periphery of the small-diameter disk 2B. Wrap around. Then, in this state, the first front arm abutting member 38 and the second front surface abutting member 40 are in contact with the back surface side of the outer peripheral portion of the small-diameter disk 2B. The second rotating arm 36 is urged by the torsion coil spring and is rotated in the direction adjacent to each other, that is, in the directions of arrows a ₁ and b ₁ shown in FIG.

The third rotating arm 46, by being pressed in a state where the third contact member 48 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. 23 Moved.

  The first rotating arm 35 and the second rotating arm 36 push the small-diameter disk 2B to the disk insertion / removal position shown in FIG. 24 while pressing the back side of the outer peripheral portion of the small-diameter disk 2B. .

In the case of the small-diameter disk 2B, as shown in FIG. 25, the first turning arm 35 and the second turning arm 36 are in a direction close to each other, that is, arrows a ₁ and b shown in FIG. _By further rotating in the direction ₁ , the small-diameter disk 2B can be pushed out from the disk insertion / removal opening 19 to the position where the center hole 2a of the small-diameter disk 2B is exposed to the outside of the housing 3.

  As described above, in the disk drive device 1, when the large-diameter disk 2 </ b> A and the small-diameter disk having different outer diameters are pulled to the disk mounting position by the first rotating arm 35 and the second rotating arm 36. By sandwiching the optical discs 2A and 2B inside the first front contact member 38, the first back contact member 39, the second front contact member 40, and the fourth contact member 50, It is possible to perform a centering operation for positioning these optical disks 2A and 2B having different outer diameters at the disk mounting position.

  Here, as schematically shown in FIG. 29, the first rotating arm 35 and the second rotating arm 36 are disposed at positions that are substantially symmetrical with the turntable 23a of the disk mounting portion 23 interposed therebetween. It can be rotated in a direction close to or away from each other around a rotation center O located on the back side of the turntable 23a.

  Of the four contact members 38, 39, 40, and 50 that are in contact with the outer peripheral portions of the optical disks 2 </ b> A and 2 </ b> B having different outer diameters, they are positioned on the front side of the turntable 23 a of the first rotating arm 35. The first front-side abutting member 38 and the first back-side abutting member 39 located on the back side of the turntable 23 a of the first rotating arm 35 and the turntable of the second rotating arm 36. The second front-side contact member 40 located on the front side of 23a and the fourth contact member 50 located on the back side of the turntable 23a of the second rotating arm 36 are the same as those of the turntable 23a. The positional relationship is substantially symmetric with respect to the center line along the insertion direction of the optical disc 2 passing through the center portion and the rotation center O.

  By the way, when centering the large-diameter disk 2A having a diameter of 12 cm and when centering the small-diameter disk having a diameter of 8 cm, the rotation of the first rotating arm 35 and the second rotating arm centered on the rotation center O is performed. An angular difference is generated by Δθ in the moving range.

  Therefore, if the arrangement of the four abutting members 38, 39, 40, 50 is set in advance in consideration of this angle difference Δθ, the four abutting members 38, 39 can be used in the centering operation described above. , 40, 50 can be brought into contact with the outer peripheral portions of the optical disks 2A, 2B having different outer diameters.

Specifically, the than turntable 23a around the rotation center O through the front side arc and S _1, the outer peripheral portion of the large-diameter disc 2A and a small-diameter disc 2B in the arc S ₁ and the disk mounting position The contact points are A and B, respectively, and an arc centering on the rotation center O passing through the back side of the turntable 23a is S ₂ (S ₁ > S ₂ ), and this arc S ₂ and the large diameter at the disk mounting position Two arcs S ₁ and S ₂ satisfying the relationship of angle AOB = A′OB ′ = Δθ when the contact points between the outer periphery of the disk 2A and the outer periphery of the small-diameter disk 2B are A ′ and B ′, respectively. , It exists over a range of a predetermined radius. And it is designed so that the four contact members 38, 39, 40, 50 are arranged at positions satisfying such a relationship.

In the vicinity of the arc S _1, [Delta] [theta] as the radius becomes smaller decreases, [Delta] [theta] increases the radius increases. The design limit is a point slightly beyond the arc S ₁ , that is, a place where contact with the outer peripheral portion of the small-diameter disk 2 B is impossible. On the other hand, in the vicinity of the arc S _2, as [Delta] [theta] is large radius decreases, [Delta] [theta] decreases as the radius increases. Δθ has a minimum value, which is a design limit.

In actual design, the most preferable radii of the arcs S ₁ and S ₂ and the angle difference Δθ are set within the range of the degree of freedom of design. These are easily obtained while drawing using CAD software or the like. It is possible.

  As described above, in the disk drive device 1, the first rotating arm 35 and the second rotating arm 36 have the first front-side contact member 38, the first back-side contact member 39, the first When the optical disks 2A and 2B having different outer diameters are sandwiched inside the front surface side contact member 40 and the fourth contact member 50, respectively, the central portions (center holes) of the optical disks 2A and 2B having different outer diameters are sandwiched. 2a) and the central portion of the disc mounting portion 23 (with the engaging projection 28a of the turntable 23a) can be made to coincide with each other in the direction orthogonal to the main surface of the disc 2. That is, it is possible to appropriately and stably perform the centering operation for positioning the optical disks 2A and 2B having different outer diameters at the disk mounting position.

  Further, in this disk drive device 1, the first rotating arm 35 and the second rotating arm 36 pull the large diameter disk 2A and the small diameter disk having different outer diameters to the disk mounting position and simultaneously perform the centering operation. Is called. That is, the centering operation by the first rotating arm 35 and the second rotating arm 36 also serves as an operation of further pulling the optical disk 2 drawn by the third rotating arm 46 to the disk mounting position.

  Therefore, in this disk drive apparatus 1, regardless of the difference in the outer diameter of the optical disks 2A and 2B inserted from the disk insertion / removal port 19, the loading operation for pulling the optical disks 2A and 2B having different outer diameters to the disk mounting position is performed appropriately. It is possible to carry out stably.

  Specifically, the radius of the large-diameter disk 2A is 6 cm, whereas the radius of the small-diameter disk 2B is 4 cm. Therefore, the small-diameter disk 2B has an extra disk insertion / removal opening of about 2 cm than the large-diameter disk 2A. The distance from the disc mounting position to the disc mounting position will not be equal unless it is pushed from 19 into the housing 3. That is, the small-diameter disk 2B has a short stroke of about 2 cm from the disk insertion / removal opening 19 to the disk mounting position, compared to the large-diameter disk 2A.

  Therefore, in the disk drive device 1, in order to absorb the difference in stroke due to the difference in outer diameter between the large-diameter disk 2A and the small-diameter disk 2B, first, the center of the small-diameter disk 2B is obtained by the third rotating arm 46. The small-diameter disk 2B is pushed into the housing 3 until the hole 2a is positioned on the back side with respect to the straight line connecting the first front-side contact member 38 and the second front-side contact member 40. If the small-diameter disk 2A is pushed in about 10 mm more than the large-diameter disk 2A as an actual margin, the subsequent pulling operation becomes more stable.

  Next, the first rotating arm 35 and the second rotating arm 36 are urged by the torsion coil springs and rotated in directions close to each other, whereby the first front contact member 38 and the second rotating arm 36 are rotated. The small-diameter disk 2B sandwiched between the two front-side contact members 40 is pulled to the disk mounting position.

  At this time, the stroke difference due to the difference in outer diameter between the large-diameter disk 2A and the small-diameter disk 2B is absorbed according to the degree of closing of the first rotating arm 35 and the second rotating arm 36. Become. As a result, the optical disks 2A and 2B having different outer diameters can be reliably pulled to the disk mounting position.

  Further, the disk drive device 1 has a configuration in which the third contact member 48 of the third rotating arm 46 can also contact the outer peripheral portion of the large-diameter disk 2A during the centering operation of the large-diameter disk 2A. It has become. That is, a total of five contact members 38, 39, 40, 48, and 50 are brought into contact with the outer peripheral portion of the large-diameter disk 2A.

  Here, the abutting portion that abuts on the outer peripheral portion of the optical disc 2 during the centering operation is the front side of the turntable 23 a of the first rotating arm 35 and the turntable of the first rotating arm 35. At least 3 surrounding the turntable 23a among the back side from the turntable 23a, the front side from the turntable 23a of the second turning arm 36, and the backside from the turntable 23a of the second turning arm 36. A total of 3 or more are required for each location.

  Therefore, the disk drive device 1 is not necessarily limited to the above configuration as long as the above-described conditions are satisfied. For example, the third contact member 48 is separated from the outer peripheral portion of the large-diameter disk 2A during centering. It is also possible to adopt a configuration in which the number of contact points at the time of centering is three or three.

  Further, in the disk drive device 1, as in the first modification shown in FIG. 30, for example, the shape of the contact members 38, 39, 40, and 50 that are in contact with the outer peripheral portion of the optical disk 2 during centering is substantially circular. It can also be arcuate. The radius of this arc is preferably smaller than the radius of the large-diameter disk 2a.

  In this case, the starting position of the loading operation by the first rotating arm 35 and the second rotating arm 36 can be set to the front, and the amount of the optical disk 2 discharged from the optical disk insertion / removal port 19 after the ejection operation is completed. Can be increased.

  Further, in this case, as schematically shown in FIG. 31, when centering the large-diameter disk 2A, the first back-side abutting member 39 and the back side of the fourth abutting member 50 having a substantially arc shape ( The outer peripheral portion of the large-diameter disk 2A comes into contact with the point A ′ shown in FIG. On the other hand, when the small-diameter disk 2B is centered, the small-diameter disk 2B is placed on the front side (point B ′ shown in FIG. 31) of the first back-side abutting member 39 and the fourth abutting member 50 having a substantially arc shape. The outer peripheral part of this will contact.

  Therefore, A′OB ′ = Δθ becomes smaller as the arc portions of the first back-side contact member 39 and the fourth contact member 50 become longer. Further, when the angle difference Δθ is decreased, the rotation range of the first rotation arm 35 and the second rotation arm 36 is narrowed. As a result, for example, there are obtained merits such as a reduction in dead space due to a decrease in the passing portions of the rotating arms 35 and 36 and a reduction in mechanical stress due to a decrease in the driving stroke of the driving lever 52 that drives the rotating arms 35 and 36. be able to.

  Thus, since the setting range of the angle difference Δθ is widened by making the shapes of the first back surface side contact member 39 and the fourth contact member 50 substantially circular arc shapes, the degree of freedom in design is further increased. Is possible.

  Further, in the disk drive device 1, as in the second modification shown in FIG. 32, for example, a plurality of abutting members are arranged at each abutting position that abuts on the outer peripheral portion of the optical disk 2 during centering. It may be. Here, instead of the first back side abutting member 39, a large diameter capable of coming into contact with the outer peripheral portion of the large diameter disk 2A on the back side of the turntable 23a of the first rotating arm 35. The contact member 70a for use and the contact member 70b for small diameter that can contact the outer peripheral portion of the small diameter disk 2A are disposed.

  The fourth abutting member 50 may be divided into a plurality of abutting members. The fourth abutting member 50 is configured so that the outer periphery of the optical disc 2 is loaded during the aforementioned loading operation and ejecting operation. In order to prevent the discontinuous operation of the fourth rotating arm 49 by the divided contact members, it is desirable to have a substantially arc shape that is a continuous shape.

  Further, as the ejection assisting means for assisting the ejecting operation of the optical disc 2 described above, as shown in FIGS. 30 and 32, it swings in a plane parallel to the main surface of the optical disc 2 inserted from the disc insertion / removal opening 19. It is also possible to adopt a configuration in which a possible fifth rotation member 71 is rotatably attached to the first rotation arm 35. Further, the fifth rotating member 71 is provided with a fifth abutting member 72 projecting upward, which abuts on the back side of the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19. Yes. Thereby, it is possible to perform the above-described ejection operation more reliably.

  Further, in the disk drive device 1, the first rotating arm 35 and the second rotating arm 36 are optical disks inserted from the main surface of the top plate part 5 a facing the disk mounting part 23 and the disk insertion / removal port 19. It is rotated between the two main surfaces.

  For this reason, the above-described loading operation, centering operation, and ejecting operation of the optical disc 2 can be performed appropriately and stably without being affected by the clearance between the optical disc 2 inserted from the disc insertion opening 19 and the base 27. Is possible.

  In particular, even when the chucking operation of mounting the small-diameter disk 2B on the turntable 23A by raising the base 27 after the centering operation of the small-diameter disk 2B among the optical disks 2A and 2B having different outer diameters is performed. It is possible to avoid a collision between the rotating arm 35 and the second rotating arm 36 and the base 27.

  Therefore, in this disk drive apparatus 1, the entire apparatus can be further reduced in size, weight, and thickness without being affected by the clearance between the optical disk 2 and the base 27 that are narrowed during chucking. It is possible to deal with optical disks 2A and 2B having different diameters.

  Further, in the disk drive device 1, the distal end portion of the first rotating arm 35 and the distal end portion of the second rotating arm 36 are engaged with the guide groove 9 of the guide member 8 provided on the top plate portion 5a. It is supported so as to be slidable. As a result, the first rotating arm 35 and the second rotation between the main surface of the top plate portion 5a facing the disc mounting portion 23 and the main surface of the optical disc 2 inserted from the disc insertion / removal port 19 are performed. The moving arm 36 can be stably rotated.

  Furthermore, the casing 3 attaches such a guide member 8 to the front side of the top plate portion 5a, so that the guide member 8 functions as a reinforcing rib, and as a result, increases the rigidity of the top cover 5. Is possible. As a result, the rigidity of the top cover 5 in the vicinity of the disk insertion / removal opening 19 is prevented from being lowered, and the operation reliability when the optical disk 2 is mounted on the turntable 23a of the disk mounting portion 23 by raising the base 27 is improved. Is possible.

  As described above, the disk drive device 1 can be used for the optical disks 2A and 2B having different outer diameters with a simple mechanism, and an adapter corresponding to the large-diameter disk is attached to the small-diameter disk 2B. It is not necessary and the operability can be further improved. In addition, operation reliability is high and cost reduction is easy.

  In the disk drive device 1, the number of parts can be greatly reduced compared to the conventional slot-in type disk drive device that can handle the optical disks 2A and 2B having different outer diameters. Further, it is possible to reduce the size, weight and thickness. In particular, as an ultra-thin slot-in disk drive device mounted on a notebook personal computer 1000 or the like, it is possible to cope with thicknesses as thin as 12.7 mm and 9.5 mm.

  Next, a specific configuration for controlling the drive of the disk drive device 1 will be described. In the following description, portions equivalent to those of the disk drive device 1 are not described and are denoted by the same reference numerals in the drawings. Further, parts different from the disk drive device 1 and parts omitted from the description will be described as appropriate.

  Of the first to fourth rotating arms 35, 36, 46, and 49 constituting the disk transport mechanism 34, the first rotating arm 35 and the second rotating arm 36 are as shown in FIG. A pair of front and rear rotating rollers 73a and 73b are rotatably attached to the first front surface side contact member 38 and the second front surface side contact member 40, respectively. Of the pair of rotating rollers 73a and 73b, the rotating roller 73a on the front side is a portion that comes into contact with the outer peripheral portion of the optical disc 2 during the above-described loading operation and ejecting operation, and rotates on the rear side. The roller 73b is a portion that is in contact with the outer peripheral portion of the light disk 2 during the centering operation described above. As described above, by providing the pair of rotating rollers 73a and 73b with different functions, the loading operation of the large-diameter disk 2A and the small-diameter disk 2B by the first rotating arm 35 and the second rotating arm 36 described above. Thus, the centering operation and the ejecting operation can be performed reliably and stably.

  In the interlocking mechanism 41, as shown in FIGS. 33, 34 and 35, the first rotating arm 35 and the second rotating arm 36 described above are replaced with a large-diameter disk 2A and a small-diameter having different outer diameters. It is necessary to perform a rotation operation corresponding to the disk 2B. Therefore, the cam piece 57 bent upward from the intermediate portion of the cam lever 56 is further bent in a substantially U shape in the horizontal direction. The horizontal surface portion 57a of the cam piece 57 has a first cam portion 74a corresponding to the large-diameter disc 2A and a front surface side of the first cam portion 74a cut out in a slit shape so that the small-diameter disc A second cam portion 74b corresponding to 2B is formed.

  In the interlocking mechanism 41, the first rotation arm 35 and the second rotation when the large-diameter disk 2A is inserted from the disk insertion / removal port 19 of the housing 3 and when the small-diameter disk 2B is inserted are provided. The engagement state of the second support shaft 44 with respect to the first cam portion 74a and the second cam portion 74b is switched depending on the difference in the degree of opening with the arm 36.

  Specifically, when the large-diameter disc 2A is inserted, the second support shaft 44 is engaged with the first cam portion 74a and interlocked with the sliding operation in the left-right direction of the cam lever 56 described above. The second support shaft 44 slides in the guide slit 45. As a result, the first turning arm 35 and the second turning arm 36 can be turned in a direction close to or away from each other in accordance with the outer diameter of the large-diameter disk 2A.

  On the other hand, when the small-diameter disk 2B is inserted, the second support shaft 44 is engaged with the second cam portion 74b, and this second lever 44 is interlocked with the above-described sliding movement of the cam lever 56 in the left-right direction. The support shaft 44 slides in the guide slit 45. Accordingly, the first rotation arm 35 and the second rotation arm 36 can be rotated in the direction of approaching or separating from each other in accordance with the outer diameter of the small-diameter disk 2B.

  Further, as shown in FIG. 34, the disk transport mechanism 34 is a first urging unit that urges the first rotating arm 35 and the second rotating arm 36 described above in a direction approaching each other. The torsion coil spring 75 is provided. The first torsion coil spring 75 has one end hooked on the base end of the arm 35 with the first support shaft 37 inserted through the winding portion and the other end second. The first rotating arm 35 and the second rotating arm arm 36 are urged toward each other by being hooked on the rotating arm 36.

  In addition, as shown in FIGS. 34 and 57, the disk transport mechanism 34 has a biased state in which the first rotary arm 35 and the second rotary arm 36 described above are biased in directions close to each other. As an urging switching means capable of switching between a non-urging state, a pressing lever 76 that presses the second rotating arm 36, and the pressing lever 76 is connected to the first rotating arm 35 and the second rotating arm. 36, and a second torsion coil spring 77 which is a biasing means for biasing in a direction in which they are close to each other.

  The pressing lever 76 is made of a long sheet metal, and has an abutting pin 76a abutting against the second rotating arm 36 at one end thereof and an upper end portion of the driving lever 52 shown in FIG. And a cam pin 76b engaged with the formed cam groove 78. The pressing lever 76 is located between a contact position where the contact pin 76 a is in contact with the second rotating arm 36 and a retracted position where the contact pin 76 b is separated from the second rotating arm 36. Is pivotally supported on the chassis 11 in a rotatable state.

  The second torsion coil spring 77 has its winding portion pivotally supported by the chassis 11, one end of which is similarly hooked on the chassis 11, and the other end is hooked on the pressing lever 76. The contact pin 76 a of the pressing lever 76 is biased in the direction in which the contact pin 76 a contacts the second rotating arm 36.

  Therefore, in the disc transport mechanism 34, the pressing lever 76 presses the second rotating arm 36, so that the first rotating arm 35 and the second rotating arm 36 described above are brought close to each other. The drive lever 52 is moved to the rear side while the cam pin 76b of the pressing lever 76 slides in the cam groove 78 of the drive lever 52 in conjunction with the sliding operation of the drive lever 52 to the rear side from the biased state. When the second torsion coil spring 77 is slid to the end, the second torsion coil spring 77 is turned to the retracted position against the urging force, thereby switching to the non-biasing state.

  As shown in FIGS. 33 and 34, the third rotating arm 46 is urged by a torsion coil spring 79 which is urging means disposed on the deck portion 4a. One end of the torsion coil spring 79 is hooked on a latch pin 79a of the deck portion 4a, and the other end is hooked on a latch pin 79b provided on the lower surface of the third rotating arm 46. The direction of the urging force urged by the third rotating arm 46 can be switched between the direction in contact with the outer peripheral portion of the optical disc 2 and the direction away from the outer peripheral portion of the optical disc 2. Is possible.

  Further, the third rotating arm 46 is inserted into a substantially L-shaped shaft hole 46a through which the support shaft 47 is inserted, and a cam groove 80 formed in the upper surface portion of the drive lever 52 shown in FIG. And a cam pin 76b to be engaged. As shown in FIG. 56, the third rotation arm 46 is rotated by the cam pin 46b sliding in the cam groove 80 in conjunction with the sliding operation of the drive lever 52. Further, the rotation center of the third rotation arm 46 can be switched by the position of the support shaft 47 in the shaft hole 46a.

  The fourth rotation arm 49 is rotated in conjunction with the slide operation of the drive lever 52 via the coupling mechanism 81 shown in FIG.

  Specifically, the connecting mechanism 81 connects the crank arm 82 a supported rotatably via the first support shaft 37 and the crank arm 82 a and the fourth rotating arm 49. It has a crank mechanism comprising a connecting arm 82b. The connecting arm 82b is formed with a long hole 83b through which the guide pin 83a provided on the second rotating arm 36 is inserted. Therefore, this crank mechanism can rotate the crank arm 82 a in conjunction with the rotation operation of the fourth rotation arm 49.

  In addition, as shown in FIG. 35, the coupling mechanism 81 meshes with the first gear 84 rotated on the bottom surface of the bottom case 4 via the crank arm 82a described above, and the first gear 84. A second gear 85 and a rotation operation member 87 in which a third gear 86 meshed with the second gear 85 is formed.

  The rotation operation member 87 is for rotating the fourth rotation arm 49 in conjunction with the slide operation of the drive lever 52, and is engaged with a slide member 92 of the drive lever 52 described later. Engaging pins 88 and positioning pins 89 that abut the rear end of the drive lever 52 during recording and reproduction to position and fix the drive lever 52.

  The turning operation member 87 is urged to one side in the turning direction (here, the clockwise direction in FIG. 35) by a tension coil spring 90 which is an urging means. One end of the tension coil spring 90 is hooked on a hook pin 90 a provided on the bottom surface of the bottom case 4, and the other end is hooked on a hook pin 90 b provided on the rotation operation member 87. Thus, the turning operation member 87 is biased to one side in the turning direction. The rotation operation member 87 is formed with a substantially arcuate slit 91 for releasing the latch pin 90a.

  On the other hand, on the back side of the drive lever 52, a slide member 92 that is slidable in the front-rear direction with respect to the drive lever 52 is attached. The slide member 92 is urged toward the front side by the first and second tension coil springs 93a and 93b, and the engagement pin 88 of the rotation operation member 87 is engaged with the end on the back side. As a result, the rotation operation member 87 is rotated in conjunction with the slide operation of the drive lever 52.

  The first and second tension coil springs 93a and 93b are configured such that the front end is hooked on the drive lever 52 and the back end is hooked on the slide member 92. The drive lever 52 is biased toward the front side. Among these, the 1st tension coil spring 93a is for operating the normal drive lever 52 and the slide member 92 integrally, The spring force is about 200-300 gf. On the other hand, the second tension coil spring is for protecting the mechanism when the optical disk 2 cannot be normally ejected, and its spring force is about 400 to 600 gf.

  Therefore, in the coupling mechanism 81, when the fourth rotating arm is rotated toward the back side during the loading operation of the optical disc 2, the first gear 84 is rotated via the crank mechanism 82 described above. Moved. Then, when the first gear 84, the second gear 85, and the third gear 86 are meshed with each other, the rotation operation member 87 resists the bias of the tension coil spring 90 and the other side in the rotation direction (here, FIG. 35 (counterclockwise direction). Thereby, the drive lever 52 can be slid to the back side in conjunction with the back side of the fourth turning arm.

  On the other hand, when the optical disc 2 is ejected, the drive lever 52 is slid to the front side, so that the rotation operation member 87 moves to one side of the rotation direction (here, the clockwise direction in FIG. 35). ). Thus, the fourth rotating arm can be rotated to the front side via the crank mechanism 82 by meshing the third gear 86, the second gear 85, and the first gear 84.

  As shown in FIG. 33, the fifth rotating member 71 has a gear portion 71 a formed over a predetermined region of the outer peripheral portion, and the gear portion 71 a is an internal tooth disposed on the chassis 11. By being engaged with the gear 94, the rotation operation is performed in conjunction with the rotation operation of the first rotation arm 35.

  In order to raise and lower the base unit 22 by the base elevating mechanism 55, the drive lever 52 has a first cam slit 95 formed on the side surface facing the base 31, as shown in FIG. The first cam slit 95 includes a first horizontal surface portion 95a for positioning the base 22 at the chucking release position, and a top surface portion 95b for positioning the base 22 at the chucking position. And a second horizontal surface portion 95c for positioning the base 22 at the intermediate position.

  On the other hand, the cam piece 57 of the cam lever 56 is formed with a second cam slit 96 as shown in FIG. 38 (b), and this second cam slit 96 releases the base 22 from the chucking. A first horizontal surface portion 96a for positioning the base 22 at the position, a top surface portion 96b for positioning the base 22 at the chucking position, and a second horizontal surface portion 96c for positioning the base 22 at the intermediate position. Have.

  Here, the cam lever 56 has a pair of front and rear guide slits 97a and 97b formed on its main surface, and the guide slits 97a and 97b protrude from the bottom surface portion of the bottom case 4 shown in FIG. When the pair of headed guide pins 98a and 98b are engaged with each other, they are supported so as to be slidable in the left-right direction substantially orthogonal to the sliding direction of the drive lever 52 along the back side surface of the base 22. Yes.

  Further, a guide pin 99 is formed to protrude upward at a position where the cam lever 56 intersects the drive lever 52. On the other hand, a guide slit 100 with which the guide pin 99 is engaged is formed on the bottom surface of the drive lever 52 shown in FIG. As shown in FIG. 35, the cam lever 56 is orthogonal to the sliding direction of the drive lever 56 by the guide pin 99 sliding in the guide slit 100 in conjunction with the sliding of the drive lever 52 in the front-rear direction. It is slid in the direction.

  As shown in FIG. 5 described above, the base 27 is located on the side of the disc mounting portion 23 facing the drive lever 52 and is engaged with and supported by the first cam slit 95 of the drive lever 52. The first support shaft 59 is located on the side of the disc mounting portion 23 on the side facing the cam lever 56, and is engaged and supported by the second cam slit 96 of the cam piece 57 and the vertical slit of the bent piece 58. The second support shaft 60 is located on the front side of the side opposite to the side facing the drive lever 52, and is rotatable in a shaft hole 61 provided on the other side of the bottom case 4. A bottom surface portion of the bottom case 4 via an insulator 63 made of a viscoelastic member such as rubber, located on the front side of the side surface opposite to the side surface facing the cam lever 56 and the third support shaft 62 supported. Fixedly supported by screws 64 And it has a fixed support 65.

  Therefore, in the base lifting mechanism 55, the first support shaft 59 slides in the first cam slit 95 of the drive lever 52 in conjunction with the slide of the drive lever 52 and the cam lever 56, and the second support shaft. 60 slides in the second cam slit 96 of the cam lever 56 and the vertical slit of the bent piece 58, so that the disk mounting portion 23 side of the base 27 is in the chucking position and the chucking release position with respect to the front side. And the intermediate position.

  Specifically, in the chucking release position shown in FIG. 58, the cam lever 56 is slid rightward in conjunction with the slide of the drive lever 52 to the front side, whereby the first support shaft 59 is in the first position. The second support shaft 60 is positioned on the first horizontal plane portion 96 a in the second cam slit 96, and is positioned on the first horizontal plane portion 94 a in the cam slit 95. As a result, the base unit 22 is lowered to the chucking release position.

  In the chucking position shown in FIG. 59, the cam lever 56 is slid to the left side in conjunction with the slide of the drive lever 52 to the back side, whereby the first support shaft 59 is moved to the first cam slit. 95, the second support shaft 60 is positioned on the top surface portion 96 b in the second cam slit 96. Thereby, the base unit 22 rises to the chucking position.

  In addition, in the intermediate position shown in FIG. 60, the cam lever 56 is slid to the left end in conjunction with the sliding of the rear end of the drive lever 55, whereby the first support shaft 59 is in the first position. The second support shaft 60 is positioned at the second horizontal plane portion 96 c in the second cam slit 96, and the second support shaft 60 is positioned at the second horizontal plane portion 95 c in the second cam slit 96. As a result, the base unit 22 is lowered to an intermediate position between the chucking release position and the chucking position.

  As shown in FIGS. 39 and 40, a rack member 101 that is slidable in the front-rear direction by a predetermined stroke is attached to the front side of the drive lever 52. A rack gear 101a is formed on the rack member 101 in the front-rear direction. On the other hand, on the bottom surface of the bottom case 4, as shown in FIG. 35, a drive motor 102 constituting a displacement drive mechanism, a worm gear 103 attached to the rotation shaft of the drive motor 102, and the worm gear to a rack gear. A gear train 104 for transmitting the power of the drive motor is arranged.

  Therefore, as shown in FIG. 39, the displacement drive mechanism is configured such that the rack member 101 is moved to the back of the drive lever 52 via the worm gear 103, the gear train 104, and the rack gear 101a by driving the drive motor 102 to rotate in one direction. In the state of being pulled to the side, the drive lever 52 is driven to be displaced to the back side together with the rack member 101. On the other hand, in this displacement drive mechanism, as shown in FIG. 40, the rack member 101 is moved in front of the drive lever 52 via the worm gear 103, the gear train 104 and the rack gear 101 a by driving the drive motor 102 to rotate in the other direction. In the state of being pulled out to the side, the drive lever 52 is driven to be displaced to the front side integrally with the rack member 101.

  Further, as shown in FIG. 36, a circuit board 105 on which a drive control circuit that performs drive control of each part is configured is disposed on the bottom surface portion of the bottom case 4. The circuit board 105 is attached to the bottom surface of the bottom case 4 on the back side by screws. Further, on the bottom surface portion of the bottom case 4 and the circuit board 105, an electronic component (not shown) such as an IC chip constituting the drive control circuit, and a connector 106 for electrical connection of each portion. Detection switches SW1, SW2, SW3, SW4 and the like for detecting the operation of each unit are arranged.

  Then, the drive control circuit detects the position of the drive lever 52 driven by the above-described displacement drive mechanism based on the detection signals from these detection switches SW1, SW2, SW3, SW4, and drives by this displacement drive mechanism. The drive control of the lever 52 is performed.

  Among these, the first detection switch SW <b> 1 is disposed at the front end of the bottom case 4. The first detection switch SW1 is turned on / off by the front end portion of the drive lever 52. On the other hand, the second to third detection switches SW2, SW3, SW4 are arranged side by side at a predetermined interval on the edge of the circuit board 9 facing the drive lever 52. And these 2nd thru | or 4th detection switch SW2, SW3, SW4 is switched on / off by the cam part 107 provided in the side part of the drive lever 52 shown in FIG.37 (b), (c).

  Next, specific drive control of the disk drive device 1 configured as described above will be described.

  In this disk drive device 1, first, when the optical disk 2 is in the inserted state, the initial operation before the optical disk 2 is inserted is performed while controlling the drive of the drive lever 55 according to the timing chart shown in FIG. In other cases, the initial operation before the optical disc 2 is inserted is performed while controlling the drive of the drive lever 55 according to the timing chart shown in FIG.

  Next, when the large-diameter disk 2A is inserted from the disk insertion / removal opening 21 of the housing 3, the large-diameter shown in FIGS. 41 to 44 is performed while controlling the drive of the drive lever 55 according to the timing chart shown in FIG. The loading operation of the disk 2A is performed.

  Specifically, first, in the insertion start state of the large-diameter disk 2A shown in FIG. 41, the contact lever 76a of the pressing lever 76 contacts the drive lever 52, so that the drive lever 52 faces the front side. Is energized. Further, when the cam pin 76 b of the pressing lever 76 presses the cam groove 78 of the driving lever 52, a thrust toward the front side is generated in the driving lever 52.

  Next, in the loading start state of the large-diameter disk 2A shown in FIG. 42, when the fourth rotation arm 49 pressed by the large-diameter disk 2A is rotated toward the back side, the coupling mechanism 81 is used. Then, the drive lever 55 slides toward the back side. At this time, the movement of the cam pin 46 b of the third rotating arm 46 is restricted in the cam groove 80 of the drive lever 52. Therefore, the slide member 92 moves toward the back side against the bias of the first tension coil spring 93a with respect to the drive lever 52. The drive control circuit detects that the drive lever 52 has moved to the rear side by a predetermined stroke when the third rotating arm 46 becomes a predetermined angular position, that is, when the large-diameter disk 2A can be retracted. Then, rotational driving in one direction of the driving motor 102 is started.

  Next, in the centering state of the large-diameter disk 2A shown in FIG. 43, the third contact member 48 of the third rotation arm 46 and the fourth contact member 50 of the fourth rotation arm 49 The centering operation of the large-diameter disk 2A is performed between the fifth rotating member 71 and the fifth abutting member 72. Then, as shown in FIG. 44, chucking of the large-diameter disk 2A is completed.

  In this disk drive device 1, the base unit 22 is raised to the chucking position, the first chucking operation for mounting the large-diameter disk 2A on the turntable 23a is performed, and the base unit 22 is lowered to the intermediate position. Then, after the spindle motor 24a rotationally drives the large-diameter disk 2A and shifts the phase of the disk, the base unit 22 is raised again to the chucking position, and the large-diameter disk 2A is mounted on the turntable 23a for the second time. The chucking operation is performed.

  Next, in the recording / reproducing state of the large-diameter disk 2A shown in FIG. 45, the third contact member 48 of the third rotating arm 46 and the fourth contact member of the fourth rotating arm 49 are used. 50 and the fifth contact member 72 of the fifth rotating member 71 are separated from the outer peripheral portion of the large-diameter disk 2A.

  On the other hand, in the disk drive apparatus 1, the large-diameter disk 2A shown in FIGS. 46 and 47 is ejected while performing drive control of the drive lever 55 according to the timing chart shown in FIG.

  Here, at the time of ejecting the large-diameter disk 2A shown in FIG. 46, the position of the support shaft 47 in the shaft hole 46a of the third rotating arm 46 is switched, so that the third rotating arm 46 is loaded. It rotates in a direction away from the outer peripheral portion of the large-diameter disk 2A at a timing earlier than the time.

  More specifically, the third rotating arm 46 first moves from the state shown in FIG. 56A to the state shown in FIG. 56B in conjunction with the slide on the front side of the drive lever 52. At this time, the cam pin 46b slides on the right side of the cam groove 80 so that the third rotating arm 46 rotates counterclockwise.

  Next, when the state shown in FIG. 56C is reached, the cam pin 44b is brought into contact with the inclined surface in the cam groove 80, whereby the third rotating arm 46 is pressed to the left side. At this time, the support shaft 47 passes through the lower straight portion of the L shape in the shaft hole 46a. At this point, the large-diameter disk 2A is ready to be ejected.

  Next, when the state shown in FIG. 56 (d) is reached, the position of the support shaft 47 in the shaft hole 46a is switched to the right end of the L-shape, so that the third rotating arm 46 is rotated around this position. Fully open.

  Next, when the state shown in FIG. 56 (e) is reached, the third rotating arm 46 is urged by the torsion coil spring 79 so that the position of the support shaft 47 in the shaft hole 46a is at the left end of the L-shape. By switching, it returns to the state before loading again.

  As described above, in the disk drive device 1, by switching the rotation center of the third rotation arm 46, the third rotation coil spring 93 b is extended from the extended state at the time of ejection. It is possible to prevent the arm 46 from opening suddenly, and it is possible to stably perform the ejecting operation of the large-diameter disk 2A.

  On the other hand, when the small-diameter disk 2B is inserted from the disk insertion / extraction opening 21 of the housing 3, while performing the drive control of the drive lever 55 according to the timing chart shown in FIG. 63 as in the case of the large-diameter disk 2B, The loading operation of the small-diameter disk 2B shown in FIGS. 48 to 52 is performed.

  Specifically, first, in the insertion start state of the small-diameter disk 2B shown in FIG. 48, the contact pin 76a of the pressing lever 76 contacts the drive lever 52, so that the drive lever 52 moves toward the front side. It is energized. Further, when the cam pin 76 b of the pressing lever 76 presses the cam groove 78 of the driving lever 52, a thrust toward the front side is generated in the driving lever 52.

  Next, in the loading start state of the small-diameter disk 2B shown in FIG. 49, when the fourth rotating arm 49 pressed by the small-diameter disk 2B is rotated toward the back side, it is driven via the coupling mechanism 81. The lever 55 slides toward the back side. Then, the drive control circuit detects that the drive lever 52 has moved to the rear side by a predetermined stroke, and rotational drive in one direction of the drive motor 102 is started. Then, the cam pin 46 b of the third rotating arm 46 moves in the cam groove 80 of the drive lever 52, so that the third contact member 48 is in contact with the outer peripheral portion of the small-diameter disk 2, and the third The pivot arm 46 pivots in the direction in which the small-diameter disk 2B is drawn.

  Next, in the centering state of the small-diameter disk 2B shown in FIG. 50, the rear rotating roller 73b provided on the first front contact member 38 of the first rotating arm 35 and the second rotating arm. 36, the rear rotation roller 73b provided on the second front surface contact member 40, the fourth contact member 50 of the fourth rotation arm 49, and the fifth rotation member 71. The centering operation of the large-diameter disk 2A is performed with the abutting member 72. Then, as shown in FIG. 51, chucking of the large-diameter disk 2A is completed.

  In this disk drive device 1, the base unit 22 is raised to the chucking position, the first chucking operation for mounting the small-diameter disk 2B on the turntable 23a is performed, and the base unit 22 is lowered to the intermediate position. After the spindle motor 24a rotates and drives the small-diameter disk 2B and shifts the phase of the disk, the base unit 22 is raised again to the chucking position, and the small-diameter disk 2B is mounted on the turntable 23a for the second chucking. It is operating.

  Next, in the recording / reproducing state of the small-diameter disk 2B shown in FIG. 52, the rear rotating roller 73b provided on the first front contact member 38 of the first rotating arm 35 and the second rotation The rotation roller 73b on the back side provided on the second front surface contact member 40 of the moving arm 36, the fourth contact member 50 of the fourth rotation arm 49, and the fifth rotation member 71 The fifth contact member 72 is separated from the outer peripheral portion of the small-diameter disk 2B.

  On the other hand, in the disk drive apparatus 1, the small-diameter disk 2B shown in FIGS. 53 and 54 is ejected while performing drive control of the drive lever 55 according to the timing chart shown in FIG.

  Specifically, first, in the ejected state of the small-diameter disk 2B shown in FIG. 53, as the drive lever 52 slides toward the front side, the fourth rotating arm 49 is connected via the coupling mechanism 81. While being rotated to the front side, the abutment pin 76a of the pressing lever 76 is abutted against the drive lever 52, and the first rotation arm 35 and the second rotation arm 36 are attached in a direction close to each other. Rush. Thereby, as shown in FIG. 54, the small-diameter disk 2B can be ejected vigorously.

  By the way, in this disk drive apparatus 1, as shown in FIG. 55, when the small-diameter disk 2B is inserted from the position shifted to the first rotating arm 35 side of the disk insertion / removal port, Although the first rotating arm 35 and the second rotating arm 36 are rotated in directions away from each other, the second support shaft that slides in the guide slit 45 is caught by the curved portion 45a that is curved to the left. As a result, the rotation of the first rotating arm 35 and the second rotating arm 36 in the direction away from each other is locked, and further insertion of the small-diameter disk 2B is prevented.

  Thereby, in the disk drive device 1, it is possible to prevent a state in which the loading operation of the small-diameter disk 2B is not properly performed.

  When the small-diameter disk 2B is inserted from the position where the small-diameter disk 2B is shifted to the second rotation arm 36 side of the disk insertion / removal opening, rotational driving in one direction of the drive motor 102 is started at an early timing. For this reason, the third rotating arm 46 forcibly pulls the small-diameter disk 2B toward the center. Therefore, there is no problem when the small-diameter disk 2B is shifted to the first rotating arm 35 side.

  Further, in this disk drive apparatus 1, both when the large-diameter disk 2A is inserted and when the small-diameter disk 2B is inserted, the drive lever 52 is slid to the back side by the same stroke. Since the drive of the drive lever 52 to the back side is started, it is possible to drive the drive lever 52 thereafter by the same sequence control, and a separate detection switch for each of the disks 2A and 2B having different outer diameters. It is possible to simplify the structure.

  In addition, as shown in FIGS. 66 and 67, the disk drive apparatus 1 includes a first disk guide for guiding the optical disk 2 inserted from the disk insertion / removal port 19 on the front side of the bottom case 4 while restricting the insertion angle. A mechanism 108 and a shutter opening / closing mechanism 109 for preventing a new optical disk 2 from being inserted into the housing 3 through the disk insertion / removal port 19 when the optical disk 2 is mounted on the turntable 23a. Yes.

  As shown in FIGS. 66, 67 and 68, the first disk guide mechanism 108 has an insertion guide lever 110 which is operated up and down while synchronizing with the up and down operation of the base unit 22 by the base up and down mechanism 55. . The insertion guide lever 110 is made of a resin member with little friction with the optical disc 2, and is arranged along the insertion direction in the insertion direction of the optical disc 2, and the support shaft 111 provided on the proximal end side of the motor case 112. It is engaged with a bearing portion 113 provided on the back side and is rotatably supported. Further, on the upper surface of the insertion guide lever 110, a horizontally long guide piece 110a along the disk insertion / removal port 19 is formed so as to protrude toward the front side in order to correspond to the large diameter disk 2A and the small diameter disk 2B. The insertion guide lever 110 is formed with a pressed piece 110b that is pressed by a pressing piece 114 provided on the base 27 so as to protrude from the side surface on the back side.

  Further, one end of a torsion bar 115 supported on the back surface of the motor case 112 is engaged with the lower surface of the guide piece 110 a of the insertion guide lever 110. The torsion bar 115 is inserted into a torsion coil spring 116 attached to the motor case 112, and has one end directed upward and the other end directed downward by the urging force of the torsion coil spring 116.

  In the first disc guide mechanism 108, as shown in FIG. 70A, when the base 27 is in the chucking release position, the pressing piece 114 of the base 27 displaces the pressed piece 110b of the insertion guide lever 110. By pressing downward, the guide piece 110a of the insertion guide lever 110 can be raised to a position where the insertion angle of the optical disk 2 inserted from the disk insertion / removal opening 19 is restricted. On the other hand, as shown in FIG. 70 (b), when the base 17 is at the intermediate position, the insertion guide lever 110 is released by releasing the pressing of the pressing piece 114 of the base 27 against the pressed piece 110 b of the insertion guide lever 110. The guide piece 110a can be lowered to a position away from the signal recording surface of the optical disc 2 mounted on the turntable 23a.

  Accordingly, in this disk drive device 1, the second disk guide mechanism 108 moves up and down the insertion guide lever 110 while interlocking with the lifting and lowering operation of the base 27 by the base lifting mechanism 55. When the large-diameter disk 2A or the small-diameter disk 2B having a different outer diameter is inserted from the guide 19, the guide piece 110A of the insertion guide lever 110 regulates the insertion angle of the optical disk 2 inserted from the disk insertion / removal opening 19 while By guiding the inside of the housing 3, it is possible to prevent the signal recording surface of the disk 2 from coming into contact with the components in the housing 3 and being damaged. In particular, since the guide piece 110a of the insertion guide lever 110 has a horizontally long shape along the disk insertion / removal port 19, not only the large diameter disk 2A but also the small diameter disk 2B having a smaller diameter than the large diameter disk 2A. Is also available.

  As shown in FIGS. 66, 67 and 69, the shutter opening / closing mechanism 109 has a shutter member 117 which is operated up and down in synchronization with the up / down operation of the insertion guide lever 110 by the first disk guide mechanism 108 described above. ing. The shutter member 117 is formed of a substantially rectangular flat plate member, and the rear side is engaged with a vertical slit 118 provided on the front surface of the bottom case 4 and supported so as to be slidable in the vertical direction. Further, a pair of shutter pieces 117a extended along the disk insertion / removal opening 19 is provided on both side surfaces of the shutter member 117 so as to correspond to the large diameter disk 2A and the small diameter disk 2B. The other end of the torsion bar 115 supports the back side of the shutter member 117. Thereby, the shutter member 117 is held downward.

  Then, the shutter member 117 is in synchronization with the ascending / descending operation of the insertion guide lever 110 by the first disk guide mechanism 108, and the closing position for closing the path of the optical disk 2 inserted from the disk insertion / removal opening 19 Is moved up and down between the open position where the path of the optical disc 2 inserted from the open position is opened.

  Specifically, in the shutter opening / closing mechanism 109, as shown in FIG. 71A, when the base 27 is in the chucking release position, the path of the optical disk 2 into which the shutter member 117 is inserted from the disk insertion / removal opening 19 is opened. Can be lowered to the open position. On the other hand, in the shutter opening / closing mechanism 109, as shown in FIG. 71 (b), when the insertion guide lever 110 is raised when the base 17 is in the intermediate position, the torsion bar 115 supported by the motor case 112 is rotated about its axis. Rotates and pushes the shutter member 117 upward. As a result, the shutter member 117 can be raised to the closing position that blocks the path of the optical disk 2 inserted from the disk insertion / removal port 19.

  Therefore, in this disk drive device 1, a new large-diameter disk 2 or small-diameter disk 2 </ b> B is inserted into the housing 3 from the disk insertion / removal port 19 by the shutter member 117 in a state where the optical disk 2 is mounted on the turntable 23 a. Can be prevented. In particular, since the pair of shutter pieces 117 a of the shutter member 117 has a double wing shape extending along the disk insertion / removal opening 19, the small-diameter disk 2 </ b> B is formed from the gap between the shutter member 117 and the disk insertion / removal opening 19. It is possible to prevent insertion.

  Further, as shown in FIGS. 66, 67 and 71, the disk drive device 1 contacts the fourth contact member 50 of the fourth rotating arm 49 with the small-diameter disk 2B inserted from the disk insertion / removal port. A second disk guide mechanism 118 that guides the inside of the housing 3 while regulating the contactable height is provided.

  The second disc guide mechanism 118 has a guide lever 119 that is operated up and down in synchronism with the up and down movement of the base unit 22 by the base up and down mechanism 55 in the vicinity of the tip of the fourth rotating arm 49. . The guide lever 119 is made of a resin member with little friction with the optical disc 2, and is arranged along the insertion direction in the insertion direction of the small-diameter disc 2 </ b> B, and a support shaft 119 a provided on the base end side is provided on the bottom case 4. It is engaged with a bearing portion 120a of a bearing member 120 provided on the bottom surface portion and is rotatably supported.

  Further, a guide pin 119 b is formed to protrude toward the drive lever 52 at the distal end side of the guide lever 119. On the other hand, as shown in FIGS. 37 (b) and 37 (c), the drive lever 52 is provided with a cam portion 121 to which the guide pin 119b is slidably contacted. On the other hand, on the base end side of the guide lever 113, an elastic piece 119c is provided extending from the front side to the back side. And the front-end | tip part of this elastic piece 119c is latched by the latching | locking part 120b of the bearing member 120. FIG. Therefore, the distal end side of the guide lever 119 is urged downward by the elastic force of the elastic piece 119c.

  Further, a disk guide portion 119 d for guiding the small-diameter disk 2 B inserted from the disk insertion / removal opening 19 to the fourth contact member 50 of the fourth rotating arm 49 is provided on the upper surface of the front side of the guide lever 119. Is provided. On the other hand, when the small-diameter disk 2B is discharged from the disk insertion / removal port 19 to the outside of the housing 3, the fourth rotating arm 49 is restricted in the height direction on the upper surface of the back side of the guide lever 119. However, an arm guide portion 119e for guiding from the back side to the front side is provided. Thus, when the fourth turning arm 49 is turned from the back side to the front side, the engagement protrusion of the fourth contact member 50 of the fourth turning arm 49 and the turntable 23a. It is possible to avoid a collision with 28a.

  When the drive lever 52 is slid in the front-rear direction, the guide lever 119 raises the small-diameter disk 2B inserted from the disk insertion / removal port 19 by the guide pin 119b sliding on the upper surface of the cam part 121. It is moved up and down between a guide position that restricts in the direction and a retracted position that is separated from the lower surface of the small-diameter disk 2B mounted on the turntable 23a.

  Therefore, in this disk drive device 1, when the small-diameter disk 2 </ b> B is inserted from the disk insertion / removal opening 19 of the housing 3, the second guide lever located in the vicinity of the tip of the fourth rotating arm 49 is the disk insertion / removal opening. The small-diameter disc 2B inserted from 19 is guided to the inside of the housing 3 while being regulated to a height at which it can abut against the fourth abutting member 50 of the fourth rotating arm 49, and thereafter The loading operation of the small-diameter disk 2B can be performed appropriately and reliably.

  The insertion guide lever 110 is located in the vicinity of the tip of the second rotating arm 36, and the optical disk 2 inserted from the disk insertion / removal port 19 is inserted into the second front side of the second rotating arm 36. It also has a function similar to that of the guide lever 119 for guiding the inside of the housing 3 while restricting the height to allow contact with the contact member.

  By the way, the disk drive device 1 may be configured to have a plurality of push-up pins 66 as chucking release means for detaching the optical disk 2 from the turntable 23a.

  For example, in the disk drive device 1 shown in FIG. 72, a pair of push-up pins 66a and 66b are provided so as to protrude upward from the bottom surface portion of the bottom case 4 facing each other with the disk mounting portion 23 interposed therebetween. Specifically, of the pair of push-up pins 66 a and 66 b, one push-up pin 66 a is located on the back side of the base 27 closest to the disk mounting portion 23 and faces upward from the bottom surface portion of the bottom case 4. Projecting. On the other hand, the other push-up pin 66b is located in the vicinity of the front-side disk mounting portion 23 opposite to the one push-up pin 66a and the disk mounting portion 23 and penetrates the base 27 in the bottom. The case 4 is provided so as to protrude upward from the bottom surface.

  In the disc drive apparatus 1, the base lifting mechanism 55 lowers the base 27 to the chucking release position, thereby performing a chucking release operation for removing the optical disc 2 from the turntable 23a. Specifically, when the base 27 is lowered to the chucking release position, the tips of the pair of push-up pins 66a and 66b come into contact with the non-signal recording area on the inner peripheral side of the optical disc 2 mounted on the turntable 23a. These push-up pins 66a and 66b push the optical disc 2 up and detach the optical disc 2 from the turntable 23a.

Here, the distance between the rotation center of the turntable 23a and the one push-up pin 66a is L1, and the distance from the rotation center of the turntable 23a to the line segment connecting the pair of push-up pins 66a and 66b is L2. When the moment generated in the optical disc 2 when the chucking release operation is performed only for the push-up pins 66a is M, the optical disc 2 is generated when the chucking release operation is performed by the pair of push-up pins 66a and 66b. The moment M ′ can be expressed by the following equation.
M ′ = L2 / L1 × M (where L2 <L1)
Therefore, from this equation, when the chucking release operation is performed with the pair of push-up pins 66a and 66b, the moment generated in the optical disc 2 is greater than when the chucking release operation is performed with only one push-up pin 66a. M ′ can be greatly reduced.

  Ideally, the moment M ′ generated in the optical disk 2 is set to 0 (∵L2 = 0) by arranging the rotation center of the turntable 23a and the pair of push-up pins 66a and 66b on the same straight line. However, it is often difficult to arrange them on the same straight line due to design constraints such as component interference. Therefore, in reality, a pair of push-up pins is used so that the moment when it becomes impossible to cancel chucking is obtained by calculation or experiment, and the value of M ′ in the above formula becomes smaller than this moment. What is necessary is just to determine arrangement | positioning of 66a, 66b.

  As described above, in this disk drive device 1, since the moment generated in the optical disk 2 when chucking is released can be reduced, the small-diameter disk 2B of the large-diameter disk 2A and the small-diameter disk 2B is blocked. Even when the king release operation is performed, it is possible to reduce the load applied to the abutting member of the rotating arm that holds the outer peripheral portion of the small-diameter disk 2B, and to reliably detach the small-diameter disk 2B from the turntable 23a. It is. Therefore, in the disk drive device 1, it is possible to appropriately and reliably perform the chucking releasing operation of the large diameter disk 2A and the small diameter disk 2B having different outer diameters.

  Further, the disk drive device 1 may have a configuration in which three or more push-up pins 66 are provided.

  For example, in the disk drive device 1 shown in FIG. 73, the bottom surface of the bottom case 4 is such that the three push-up pins 66a, 66b, 66c are positioned at the vertices of a polygon (here, a triangle) surrounding the disk mounting portion 23. It protrudes from the part upward. Specifically, in addition to the two push-up pins 66a and 66b described above, the third push-up pin 66c, together with the two push-up pins 66a and 66b in the vicinity of the disc mounting portion 23, surrounds the triangle S that surrounds the disc mounting portion 23. The bottom case 4 is provided so as to protrude upward from the bottom surface of the bottom case 4 while being located at the top of the bottom case 4 and penetrating the base 27.

  In this disk drive device 1, when the base 27 is lowered to the chucking release position by the base lifting mechanism 55, the tip ends of the three push-up pins 66a, 66b, 66c are the inner periphery of the optical disk 2 mounted on the turntable 23a. By abutting against the non-signal recording area on the side, the push-up pins 66a, 66b, 66c push the optical disk 2 up while detaching the optical disk 2 from the turntable 23a.

  In this case, by disposing the turntable 23a inside the three push-up pins 66a, 66b, 66c, it is possible to prevent the moment M ′ from being generated in the optical disc 2 when the chucking is released.

  As described above, in this disk drive device 1, since it is possible to prevent the occurrence of a moment when the chucking of the optical disk 2 is released, the chucking of the small diameter disk 2B out of the large diameter disk 2A and the small diameter disk 2B. Even when the releasing operation is performed, it is possible to reduce the load applied to the contact member of the rotating arm that holds the outer peripheral portion of the small-diameter disk 2B described above, and to reliably detach the small-diameter disk 2B from the turntable 23a. is there. Therefore, in the disk drive device 1, it is possible to appropriately and reliably perform the chucking releasing operation of the large diameter disk 2A and the small diameter disk 2B having different outer diameters.

  In addition, the disk drive device 1 includes a disk push-up mechanism 160 that lifts and lowers the push-up lever 161 that pushes up the optical disk 2 mounted on the turntable 23a while interlocking with the lift operation of the base 27, as shown in FIG. It is also possible to adopt a configuration.

  Specifically, the push-up lever 161 of the disc push-up mechanism 160 is a long member made of a resin that has little friction with the optical disc 2, and a pair of push-up levers 161 along the side surface on the back side of the base and the side surface on the drive lever 52 side. Has been placed. The push-up lever 161 is pivotally supported through a bearing portion 161a provided on the bottom surface portion of the bottom case 4 so that one end side and the other end side swing vertically. It is possible. Further, an abutting pin 161b that abuts against the optical disc 2 is formed at one end of the push-up lever 161 so as to protrude upward. On the other hand, a pressed piece 161 c that is pressed by the lower surface of the descending base 27 is formed at the other end of the push-up lever 161 so as to protrude toward the base 27. The push-up lever 161 is urged in a direction in which the pressed piece 161b abuts on the lower surface of the base 27 by a spring member such as a tension coil spring (not shown).

  In the disk push-up mechanism 160 configured as described above, when the base 27 is lowered to the chucking release position by the base elevating mechanism 55, the base 27 pushes the pressed piece 161c of the push-up lever 161 downward. Then, the contact pin 161b of the push-up lever 161 is raised to the push-up position for pushing up the optical disc 2 mounted on the turntable 23a. As a result, the pair of push-up levers 161 pushes up the optical disc 2 while the abutment pins 161b of the pair of push-up levers 161 come into contact with the optical disc 2 mounted on the turn table 23a. Can be withdrawn.

  On the other hand, when the base 27 is in the intermediate position, the contact pin 161b of the push-up lever 161 is moved from the optical disk mounted on the turntable 23a while the pressed piece 161c of the push-up lever 161 is in contact with the base 27. It is lowered to the retreat position where it is separated.

  As described above, in the disk push-up mechanism 160, the large-diameter disk 2A and the small-diameter disk 2B are operated by raising and lowering the contact pin 161b of the push-up lever 161 in conjunction with the raising and lowering operation of the base 27 by the base raising and lowering mechanism 55. Among these, even when the chucking releasing operation of the small-diameter disk 2B is performed, the small-diameter disk 2B is turned while reducing the load applied to the contact member of the rotating arm that holds the outer peripheral portion of the small-diameter disk 2B. It is possible to reliably leave the table 23a. Therefore, in the disk drive device 1, it is possible to appropriately and reliably perform the chucking releasing operation of the large diameter disk 2A and the small diameter disk 2B having different outer diameters.

  The push-up lever 160 disposed along the side surface of the base 27 on the drive lever 52 side is located in the vicinity of the distal end portion of the second rotating arm 36. The guide lever 119 for guiding the optical disc 2 inserted from the guide 19 to the inside of the housing 3 while restricting the optical disc 2 to a height at which the optical disc 2 can be brought into contact with the second front contact member 40 of the second rotating arm 36; It is possible to have the same function.

  Therefore, in this case, when the base 27 is in the chucking release position, the guide lever (the height equivalent to the above-mentioned push-up position) is used to restrict the push-up lever 161 in the height direction of the optical disc 2 inserted from the disc insertion / removal port 19. Or a position higher than that) so that the optical disk 2 inserted from the disk insertion / removal port 19 can be brought into contact with the second front-side contact member 40 of the second rotating arm 36. It is possible to guide appropriately to the inside of the housing 3 while regulating.

  Further, the disk drive device 1 may be configured such that the push-up pin 66 and the disk push-up mechanism 160 are combined.

  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 can be widely applied to disk drive devices that perform the above.

1 is a perspective view showing an appearance of a notebook personal computer equipped with a disk drive device. FIG. It is a perspective view which shows the external appearance of a disk drive apparatus. It is the perspective view which looked at the top cover from the inner surface side. 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 disc 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 delivery 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 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 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 ejection 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 delivery state at the time of discharge | emission 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 completion 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 delivery 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 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 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 small diameter disc. It is a figure for demonstrating operation | movement of a disc drive apparatus, and is a top view which shows the delivery 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 completion 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 overstroke 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 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 schematic diagram for demonstrating the centering operation | movement of a large diameter disc and a small diameter disc. It is a top view which shows the 1st modification of a disk drive apparatus. It is a schematic diagram for demonstrating the centering operation | movement of the large diameter disc by the 1st modification, and a small diameter disc. It is a top view which shows the 2nd modification of a disk drive apparatus. It is a top view which shows the state which removed the top cover of the disk drive apparatus. It is a top view which shows the state which removed some components of the disk drive apparatus. It is a top view which shows the state which removed some components of the disk drive apparatus. It is a top view which shows the positional relationship of the drive lever and detection switch of a disk drive apparatus. (A) is the side view which looked at the drive lever from one side, (b) is the top view which looked at the drive lever from the upper side, (c) is the side view which looked at the drive lever from the other side It is a figure and (d) is the top view which looked at the drive lever from the lower side. (A) is a top view which shows the structure of a cam lever, (b) is a side view which shows the structure of a cam lever. (A) is the top view which looked at the drive lever at the time of loading operation from the lower side, (b) is the top view which looked at the drive lever from the upper side. (A) is the top view which looked at the drive lever at the time of ejection operation from the lower side, (b) is the top view which looked at the drive lever from the upper side. 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 loading 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 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 chucking completion 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 recording / reproducing 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 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 discharge completion 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 loading 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 centering 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 completion 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 recording / reproducing 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 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 discharge completion 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 state in which the small diameter disc was inserted near one side. It is a top view for demonstrating operation | movement of the 3rd rotation arm at the time of ejection. It is a principal part top view which shows the engagement state of a press lever and a drive lever. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, (a) is a top view which shows the state in which a base unit exists in a chucking release position, (b) is the 1st of the base in the chucking release position. FIG. 6 is a side view showing the positional relationship between one support shaft and the first cam slit of the drive lever, and FIG. 4C is a second support shaft of the base and a second cam of the cam piece at the chucking release position. It is a side view which shows the positional relationship with a slit, (d) is a side view which shows the position of the base unit in the chucking release position. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, (a) is a top view which shows the state in which a base unit exists in a chucking position, (b) is the 1st of the base in the chucking position. It is a side view which shows the positional relationship of a spindle and the 1st cam slit of a drive lever, (c) is the 2nd spindle of a base in the chucking position, and the 2nd cam slit of a cam piece. It is a side view which shows a positional relationship, (d) is a side view which shows the position of the base unit in the chucking position. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, (a) is a top view which shows the state which has a base unit in an intermediate position, (b) is the 1st spindle of the base in the intermediate position And (c) is a side view showing the positional relationship between the second camshaft of the base and the second cam slit of the cam piece at the intermediate position. It is a side view to show, (d) is a side view which shows the position of the base unit in the intermediate position. 6 is a timing chart showing switching states of a first switch, a second switch, a third switch, and a fourth switch when a disk of the disk drive device is in the initial operation. 6 is a timing chart showing switching states of the first switch, the second switch, the third switch, and the fourth switch when the disk drive device is in the absence of a disk and in an initial operation. 6 is a timing chart showing switching states of a first switch, a second switch, a third switch, and a fourth switch during a loading operation of the disk drive device. 6 is a timing chart showing switching states of a first switch, a second switch, a third switch, and a fourth switch during a large-diameter disk ejection operation of the disk drive device. 6 is a timing chart showing switching states of a first switch, a second switch, a third switch, and a fourth switch during a small-diameter disk ejection operation of the disk drive device. It is a top view which shows the positional relationship of a 1st disc guide mechanism, a 2nd disc guide mechanism, a shutter opening / closing mechanism, and a small diameter disc. It is a top view which shows the positional relationship of a 1st disk guide mechanism, a 2nd disk guide mechanism, and a shutter opening / closing mechanism, and a large diameter disk and a small diameter disk. It is a principal part figure which shows the structure of a 1st disc guide mechanism. It is a principal part front view which shows the structure of a shutter opening / closing mechanism. It is a figure for demonstrating operation | movement of a 1st disc guide mechanism and a shutter opening / closing mechanism, (a) is sectional drawing which shows the state in which a base unit exists in a chucking release position, (b) is a base unit It is sectional drawing which shows the state which is in a recording / reproducing position. FIG. 9 is a diagram for explaining the operation of the second disc guide mechanism, where (a) is a cross-sectional view showing a state in which the base unit is in the chucking release position, and (b) is a diagram showing the base unit in the recording / reproducing position It is sectional drawing which shows a state in. It is a top view which shows the structure of the disk drive apparatus by which a pair of push-up pin is arrange | positioned. It is a top view which shows the structure of the disc drive apparatus by which three push-up pins are arrange | positioned. It is a top view which shows the structure of a disk drive apparatus provided with a disk raising mechanism.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Disc drive apparatus, 2 Optical disk, 3 Housing | casing, 4 Bottom case, 5 Top cover, 8 Guide member, 9 Guide groove, 10 Window part, 11 Chassis, 19 Disc insertion / extraction slot, 22 Base unit, 23 Disc mounting part, 23a Turntable, 24 disc rotation drive mechanism, 25 optical pickup, 26 pickup feed mechanism, 27 base, 28 chucking mechanism, 34 disc transport mechanism, 35 first rotating arm, 36 second rotating arm, 38 first Front side abutting member, 39 first back side abutting member, 40 second front side abutting member, 41 interlocking mechanism, 46 third rotating arm, 48 third abutting member, 49 fourth Rotating arm, 50 fourth contact member, 52 drive lever, 55 base Lowering mechanism, 56 cam lever, 66 push-up pin, 71 fifth rotating member, 72 fifth contact member, 81 coupling mechanism, 101 rack member, 108 first disk guide mechanism, 109 shutter opening / closing mechanism, 110 insertion guide Lever, 117 shutter member, 118 second disk guide mechanism, 119 guide member, 160 disk push-up mechanism, 161 push-up lever

Claims (5)

A housing provided with a disk insertion / removal port through which a large-diameter and a small-diameter optical disk with different outer diameters are inserted / removed,
A disk mounting portion on which the optical disk inserted into the housing from the disk insertion / removal port is mounted; a disk rotation driving mechanism for rotating the optical disk mounted on the disk mounting portion; and the disk rotation An optical pickup that writes and / or reads a signal to and from the optical disk that is rotationally driven by a driving mechanism; and a pickup feeding mechanism that moves the optical pickup in a radial direction of the optical disk. A base unit provided integrally with the base;
A disk that transports optical disks having different outer diameters between a disk insertion / removal position where the optical disk is inserted / removed from the disk insertion / removal opening and a disk mounting position where the optical disk is mounted on the disk mounting portion. A transport mechanism;
The base is moved between a chucking position in which the base is raised and the optical disk is mounted on the disk mounting portion, and a chucking release position in which the optical disk is detached from the disk mounting portion by lowering the base. A base lifting mechanism for lifting and lowering;
A plurality of push-up members protruding upward from the bottom surface of the housing,
When the base lifting mechanism lowers the base to the chucking release position, the plurality of push-up members are brought into contact with the large-diameter or small-diameter optical disk mounted on the disk mounting portion, and the disk is A disk drive device characterized in that a chucking releasing operation for detaching the large-diameter or small-diameter optical disk from the disk mounting portion is performed by pushing up.   2. The disk drive device according to claim 1, wherein the plurality of push-up members are provided in pairs at positions facing each other with the disk mounting portion interposed therebetween.   2. The disk drive device according to claim 1, wherein the plurality of push-up members are provided so as to be positioned at respective vertexes of a polygon surrounding the disk mounting portion.   2. The disk drive device according to claim 1, further comprising a disk push-up mechanism for raising and lowering the push-up member while interlocking with the raising and lowering operation of the base by the base lifting mechanism.   The disk push-up mechanism raises the push-up member to a push-up position for pushing up the optical disk mounted on the disk mounting portion when the base is at the chucking release position, and when the base is at the intermediate position, 5. The disk drive device according to claim 4, wherein the push-up member is lowered to a retracted position separated from the optical disk mounted on the disk mounting portion.

Images