JP2005085450A - Disk drive unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable making a whole device thinner even when an insertion guide member guiding regulating an insertion angle of an optical disk inserted from a disk insertion and ejection opening is provided. <P>SOLUTION: This unit has an insertion guide member 113 guiding regulating an insertion angle of an optical disk 2 inserted from a disk insertion and ejection opening 21, when the base 31 is at a chucking releasing position, the insertion guide member 113 is elevated to a position at which an insertion angle of the optical disk 2 inserted from the disk insertion and ejection opening 21 is regulated, when the base 31 is at a chucking position, the insertion guide member 113 is dropped to a position at which it is separated from the optical disk 2 loaded to the disk loading part 27. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disk drive device that records and / or reproduces information signals to and from an optical disk, and more particularly to a slot-in type disk drive device that can directly insert and eject an optical disk from a disk insertion / removal port.

  As optical disks, optical disks such as CD (Compact Disk) and DVD (Digital Versatile Disk) and magneto-optical disks such as MD (Mini Disk) have been widely known, and various disk drive devices corresponding to these disks are available. Has 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 from the disk insertion / removal port, the pair of guide rollers rotate in opposite directions while the disk is sandwiched between the pair of guide rollers facing each other. As a result, a loading operation for drawing the disk inserted from the disk insertion / removal opening into the inside of the housing and an ejection operation for ejecting the disk from the disk insertion / removal opening to the outside of the housing can be performed.

  By the way, portable electronic devices such as notebook personal computers on which such disk drive devices are mounted are required to be further reduced in size, weight, and thickness. The demand is also increasing.

  However, in the above-described slot-in type disk drive apparatus, the length of the pair of guide rollers is longer than the diameter of the disk, so that the overall width of the 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.

  Therefore, as a slot-in type disk drive device that can be reduced in size and thickness, it is inserted from the disk insertion / removal port by a plurality of rotating arms that rotate in cooperation with each other in a plane parallel to the optical disk. There has been proposed a disk drive device that performs a loading operation for drawing an optical disk into the housing and an ejecting operation for ejecting the optical disk from the disk insertion / removal port to the outside of the housing (for example, Patent Documents 1 and 2). See).

  By the way, in such a thinned slot-in type disk drive device, when the disk is inserted from the disk insertion / removal port, the signal recording surface (lower surface) of the disk comes into contact with the components in the housing depending on the disk insertion angle. There is a risk of injury.

  For example, in the disk drive device described in Patent Document 2, a base body having a turntable surface for placing a disk is provided, and the base body is raised after the disk is drawn into the housing. Thus, a chucking operation for placing the disc on the turntable surface is performed. For this reason, the disk drive device is provided with an insertion guide that regulates and guides the insertion angle of the disk so that the disk inserted from the disk insertion / removal port does not come into contact with components on the base body.

  However, when such an insertion guide is provided, when the chucking operation is performed by raising the base, the base must be raised so that the turntable surface is positioned above the insertion guide. Therefore, the dimension in the thickness direction of the entire apparatus must be increased by the increase.

JP-A-8-167209 JP 2003-16710 A

  Therefore, the present invention has been proposed in view of such a conventional situation, and is a case where an insertion guide member is provided that guides while restricting the insertion angle of the optical disk inserted from the disk insertion / removal opening. Another object of the present invention is to provide a disk drive device that can further reduce the thickness of the entire device.

  In order to achieve this object, a disk drive device according to the present invention includes a housing provided with a disk insertion / removal port through which an optical disk is inserted / removed on the front surface, and an optical inserted into the housing from the disk insertion / removal port. A disk mounting unit on which the disk is mounted, a disk rotation driving mechanism for rotating the optical disk mounted on the disk mounting unit, and writing and / or writing of signals to and from the optical disk rotated by the disk rotation driving mechanism Alternatively, it has an optical pickup for reading, and a pickup feeding mechanism for feeding the optical pickup over the inner and outer circumferences of the optical disk, and these are inserted from a disk insertion / removal opening with a base unit provided integrally with the base. An abutting portion that abuts on the outer peripheral portion of the optical disc is provided at the distal end portion, and the base end portion is rotatably supported. Thus, a plurality of rotating members that can swing in a plane parallel to the optical disk are provided, and the plurality of rotating members are inserted from the disk insertion / extraction opening of the housing while cooperating with each other. A disk transport mechanism that performs a loading operation that pulls the optical disk to a disk mounting position that is mounted on the disk mounting unit, and an ejection operation that ejects the optical disk from the disk insertion / removal port to the outside of the housing. A base lifting mechanism that lifts and lowers the base between a chucking position for mounting the optical disk positioned at the mounting position on the disk mounting portion and a chucking release position for lowering the base and removing the optical disk from the disk mounting portion. And an insertion guide member that guides the optical disc inserted through the disc insertion / removal opening while restricting the insertion angle of the optical disc. , In synchronism with the base of the vertical movement by the base lifting mechanism is characterized in that it comprises a disc guide mechanism elevating and lowering the insertion guide member.

  As described above, in the disk drive device according to the present invention, since the disk guide mechanism moves up and down the insertion guide member in synchronization with the lifting operation of the base by the base lifting mechanism, the base is in the chucking release position. The insertion guide member is raised to a position that regulates the insertion angle of the optical disk inserted from the disk insertion / removal opening, and when the base is in the chucking position, the insertion guide member is separated from the optical disk mounted on the disk mounting portion. Can be lowered to position.

  Therefore, in the disk drive device according to the present invention, even when an insertion guide member is provided for guiding while restricting the insertion angle of the optical disk inserted from the disk insertion / removal port, the base lifting mechanism can be moved up and down. The range can be narrowed, and the entire apparatus can be further reduced in thickness.

  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.

(1) Configuration of Disk Drive Device First, a specific configuration of the disk drive device 1 will be described.

(1-1) Configuration of Case As shown in FIGS. 2 and 3, the disk drive device 1 includes a case 3 serving as an outer case of the device main body 1a. It has a bottom case 4 assembled and a top cover 5 that covers the upper surface of the apparatus main body 1a.

  As shown in FIGS. 3 and 4, the top cover 5 forms a top plate portion 5 a in which a relatively thin sheet metal closes the upper opening of the bottom case 4, and the periphery of the top plate portion 5 a is the bottom case 4. It has a shape slightly bent along both side surfaces and the back surface. 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 projection 34a of the turntable 27a engaged with the center hole 2a of the optical disc 2 is exposed to the outside during a chucking operation to be described later. A contact protrusion 7 that slightly protrudes toward the inside of the housing 3 is formed so as to contact the periphery of the center hole 2a of the optical disc 2 held on the turntable 27a.

  A pair of guide protrusions 8 a and 8 b that guide the optical disk 2 inserted from a disk insertion / removal opening 21, which will be described later, while regulating the height in the height direction, bulge toward the inside of the housing 3. Has been formed. The pair of guide protrusions 8a and 8b are raised so as to draw an arc in the insertion direction of the optical disc 2 at a position that is substantially symmetrical with respect to the center line along the insertion direction of the optical disc 2 passing through the opening 6. And, it has a substantially partial conical shape that is raised so that the arc continuously decreases in diameter from the outside toward the inside in a direction substantially perpendicular to the insertion direction of the optical disc 2. That is, the pair of guide protrusions 8a and 8b has a shape in which the cone is divided along the axial direction and the tops of the cones face inward, and continuously from the outside toward the inside. It is low and thin.

  The pair of guide protrusions 8a and 8b has such a shape, and smoothly guides the inside of the housing 3 while correcting the shift in the width direction of the optical disk 2 inserted from the disk insertion / removal opening 21. be able to. Moreover, the top cover 5 can improve the rigidity of the top plate part 5a by providing the guide protrusions 8a and 8b having such a shape. The main surface on the inner side of the top plate portion 5a is processed to reduce the frictional resistance with the optical disc 2.

  As shown in FIGS. 3, 5 and 6, the bottom case 4 is made of a sheet metal that is formed in a substantially flat box shape as a lower housing, and has a bottom surface that is substantially rectangular and has one side surface. The deck is provided with a deck portion 4a that is raised from the bottom surface and projects outward.

  A circuit board 9 on which a drive control circuit that performs drive control of each part of the apparatus main body 1 a is configured is disposed on the bottom surface of the bottom case 4. The circuit board 9 is attached to the bottom surface portion of the bottom case 4 on the back side by screws. On the circuit board 9, an electronic component 10 such as an IC chip constituting the drive control circuit, a connector 11 for electrical connection of each part, and detection switches SW 1, SW 2 for detecting the operation of each part. SW3 and the like are arranged. Among these, the external connector 12 for electrical connection with the apparatus main body 1001 of the personal computer 1000 has a circuit so as to face the outside through the opening 13 formed on the back surface of the bottom case 4 as shown in FIG. It is mounted on the substrate 9.

  A chassis 14 is attached to the bottom surface of the bottom case 4 by screws. The chassis 14 is arranged above the circuit board 9 so as to partition the inside of the bottom case 4 up and down at substantially the same height as the deck portion 4a. The chassis 14 has a surrounding portion 15 surrounding the external connector 12, and the surrounding portion 15 is formed by bending the chassis 14 along the outer shape of the connector 12. Accordingly, the surrounding portion 15 prevents dust and the like from entering the inside of the housing 3 from the opening 13 of the bottom case 4 where the external connector 12 faces the outside, and the surrounding portion 15 holds the external connector 12. As a result, the mounting strength of the external connector 12 to the circuit board 9 is increased.

  Here, the top cover 4 is attached to the bottom case 5 and the chassis 14 by screws. Specifically, as shown in FIGS. 3 and 4, a plurality of first through holes 17 a through which the screws 16 pass are formed in the outer peripheral edge portion of the top plate portion 5 a. In addition, a second through hole 17b through which the screw 16 is similarly penetrated is formed inside the first through hole 17a. On the other hand, as shown in FIGS. 3 and 5, a plurality of first fixing pieces 18 a bent inward are provided on the outer peripheral edge of the bottom case 4. A plurality of first screw holes 19a corresponding to the first through holes 17a of the top cover 5 are formed. In addition, the chassis 14 is provided with a second fixed piece 18b that is bent upward and has its tip end bent horizontally at the same height as the first fixed piece 18a. The second fixed piece 18b is disposed on the inner side of the outer peripheral edge of the bottom case 4 and on the outer side of the outer periphery of the optical disk 2 positioned at a disk mounting position described later. A second screw hole 19b corresponding to the second through hole 17b of the top cover 5 is formed.

  In this disk drive device 1, the bottom opening is opened through the first through hole 17 a and the second through hole 17 b of the top case 5 with the top opening 5 a of the top cover 5 closed. The housing 3 is configured by screwing the screws 16 into the first screw holes 19 a of the case 4 and the second screw holes 19 b of the chassis 14. Thereby, the housing | casing 3 prevents that dust etc. penetrate | invade into the inside of the apparatus main body 1a. A cover seal (not shown) that covers the opening 6 is attached to the top plate 5a of the top cover 5 in order to prevent the entry of dust and the like from the opening 6 described above.

  The housing 3 is provided inside the plurality of first fixing pieces 18a separately from the plurality of first fixing pieces 18a provided with the top cover 5 at the outer peripheral edge of the bottom case 4. By being screwed to the second fixed piece 18 b of the chassis 14, it is possible to increase its rigidity without causing interference with the optical disk 2 inserted into the housing 3.

  As shown in FIGS. 2 and 3, a front panel 20 having a substantially rectangular flat plate shape is attached to the front surface of the housing 3. The front panel 20 is provided with a disk insertion / removal port 21 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 21 or discharged from the disk insertion / removal opening 21 to the outside of the housing 3. Further, on the front surface of the front panel 20, a display unit 22 that lights and displays an access state to the optical disc 2 and an eject button 23 that is pressed when the optical disc 2 is ejected are provided.

  A pair of guide members 24a and 24b for guiding the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 21 while being regulated in the height direction and the width direction are provided on both side portions on the front side of the bottom case 4. Yes.

  Of these pair of guide members 24a and 24b, one guide member 24a is made of a long resin member with little friction with the optical disc 2 as shown in FIGS. 3, 5 and 9, and the deck portion 4a. Attached along the upper side. Further, a guide groove 25a is formed along the insertion direction of the optical disc 2 on the side surface opposite to the mounting surface of the guide member 24a. The inner surface of the guide groove 25a is curved inward so as to make point contact with the outer periphery of the optical disc 2.

  As shown in FIGS. 3, 5 and 10, the other guide member 24b is made of a long resin member with little friction with the optical disc 2 as in the case of the one guide member 24a. Are attached along the opposite side. Further, a guide groove 25b is formed along the insertion direction of the optical disc 2 on the side surface opposite to the mounting surface of the guide member 24b. The inner surface of the guide groove 25b is curved inward so as to make point contact with the outer periphery of the optical disk.

  The pair of guide members 24 a and 24 b are in contact with the outer peripheral portion of the optical disc 2 by forming the inner surfaces of the guide grooves 25 a and 25 b slidably in contact with the outer peripheral portion of the optical disc 2 to be in point contact with the outer peripheral portion of the optical disc 2. It is possible to guide the outer periphery of the optical disc 2 inserted from the disc insertion / removal opening 21 appropriately and smoothly while restricting the outer circumference of the optical disc 2 in the height direction and the width direction.

  In particular, in this disk drive device 1, even when the optical disk 2 in which two disk substrates such as a DVD are bonded together with an adhesive is inserted from the disk insertion / removal port 21, it protrudes from the outer periphery of the optical disk 2. A loading operation for drawing the optical disk 2 inserted from the disk insertion / removal opening 21 into the housing 3 without being affected by the adhesive, and an ejection operation for ejecting the optical disk 2 from the disk insertion / removal opening 21 to the outside of the housing 3. Can be performed smoothly.

  In the pair of guide members 24a and 24b, the inner surface shape of the above-described guide grooves 25a and 25b is not limited to the above-described curved shape inside as long as the inner surface shape is in point contact with the outer peripheral portion of the optical disc 2, for example, the outer It is also possible to have a curved shape or a polygonal shape inclined obliquely inward.

(1-2) Configuration of Base Unit As shown in FIGS. 3, 5, 6, and 11, the apparatus main body 1 a includes a base unit 26 that forms a drive main body on the bottom surface of the bottom case 4.

  The base unit 26 includes a disk mounting portion 27 on which the optical disk 2 inserted into the housing 3 from the disk insertion / removal port 21 is mounted, and a disk rotation drive that rotates the optical disk 2 mounted on the disk mounting section 27. A mechanism 28, an optical pickup 29 for writing or reading a signal to or from the optical disk 2 that is rotationally driven by the disk rotation driving mechanism 28, and a pickup feed that feeds the optical pickup 29 over the inner and outer circumferences of the optical disk 2. It has a mechanism 30 and has an ultra-thin structure in which these are integrally provided on the base 31.

  The base unit 26 is disposed on the front side of the circuit board 9 and the chassis 14 so that the disc mounting portion 27 is positioned substantially in the center on the bottom surface of the bottom case 4. The base unit 26 can be moved up and down by a base lifting mechanism 93 described later, and is positioned below the optical disk 2 inserted into the housing 3 from the disk insertion / removal port 21 in the initial state. .

  The base 31 is formed by punching a sheet metal into a predetermined shape and bending the periphery slightly downward. On the main surface of the base 31, a substantially semicircular table opening 32a for facing a turntable 27a of a disk mounting portion 27 described later upward and an objective lens 29a of an optical pickup 29 described later facing upward. A substantially rectangular pickup opening 32b is formed continuously. A decorative plate 33 having openings 33a corresponding to the openings 32a and 32b is attached to the upper surface of the base 31.

  The disk mounting portion 27 has a turntable 27a that is rotationally driven by a disk rotation drive mechanism 28, and a chucking mechanism 34 for mounting the optical disk 2 is provided at the center of the turntable 27a. The chucking mechanism 34 includes an engaging projection 34a 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 34a. The optical disc 2 is held on the turntable 27a.

  The disk rotation drive mechanism 28 has a flat spindle motor 28a that rotates the optical disk 2 integrally with the turntable 27a. The spindle motor 28a has a turntable 27a provided on the upper surface portion for the table of the base 31. It is attached to the lower surface of the base 31 by screws so as to protrude slightly from the opening 32a.

  The optical pickup 29 collects the light beam emitted from the semiconductor laser serving as the light source by the objective lens 29 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. The optical pickup 29 has a biaxial actuator that drives the objective lens 29a to move in a focusing direction parallel to the optical axis of the objective lens 29a and a tracking direction orthogonal to the optical axis direction of the objective lens 29a. The focusing control and tracking control of the objective lens 29a with respect to the optical disc 2 is performed based on the detection signal from the optical disc 2 detected by the photodetector described above.

  The pickup feeding mechanism 30 includes a pickup base 35 on which an optical pickup 29 is mounted, a pair of guide shafts 36a and 36b that support the pickup base 35 so as to be slidable in the radial direction of the optical disc 2, and the pair of guide shafts 36a and 36a. A displacement drive mechanism 37 is provided for driving the pickup base 35 supported by 36 b in the radial direction of the optical disc 2.

  Of the pair of guide shafts 36a and 36b, the pickup base 35 is formed with a pair of guide pieces 38a and 38b formed with a guide hole through which one guide shaft 36a is inserted, and a guide groove for sandwiching the other guide shaft 36b. The guide pieces 39 are formed so as to protrude in opposite directions. Thereby, the pickup base 35 is slidably supported by the pair of guide shafts 36a and 36b.

  The pair of guide shafts 36a and 36b are disposed on the lower surface of the base 31 so as to be parallel to the radial direction of the optical disc 2, and the pickup base 35 facing the objective lens 29a from the pickup opening 32b of the base 31 is disposed on the optical disc. 2 is guided over the inner and outer peripheries.

  The displacement drive mechanism 37 converts the rotational drive of the drive motor 37a attached to the base 31 to linear drive via a gear or a rack (not shown), and the pickup base 35 is moved along a pair of guide shafts 36a and 36b. It is driven to move in the radial direction of the optical disk 2, i. In the base unit 26, the optical pickup 29 is positioned on the outer peripheral side in the radial direction in the initial state.

(1-3) Configuration of Disc Conveying Mechanism As shown in FIGS. 3, 5, and 6, the apparatus main body 1 a includes a disc insertion / removal position where the optical disc 2 is inserted / removed from the disc insertion / removal port 21, The turntable 27a is provided with a disk transport mechanism 40 that transports the optical disk 2 to and from the disk mounting position where the optical disk 2 is mounted.

  The disk transport mechanism 40 is positioned below the optical disk 2 inserted into the housing 3 from the disk insertion / removal opening 21 and is swingable in a plane parallel to the optical disk 2. A moving arm 41, a second rotating arm 42, and a third rotating arm 43 are provided.

The first rotating arm 41 is formed of a long flat plate member, and is positioned on one of the left and right sides (for example, the right side) of the disc mounting portion 27 with the turntable 27a interposed therebetween, and the base end portion is on the deck portion 4a. via a support shaft 44 provided on and is rotatably supported by the arrow a ₁ direction and the arrow a ₂ direction. Further, a first contact pin 41 a that comes into contact with the outer peripheral portion of the optical disk 2 inserted from the disk insertion / removal opening 21 from the back side is provided at the tip of the first rotating arm 41 so as to protrude upward. ing. Further, an intermediate portion of the first rotating arm 41 is in contact with the outer peripheral portion of the optical disk 2 from the back side together with the first contact pin 41a when the optical disk 2 is positioned at the disk mounting position. One positioning pin 41b is provided protruding upward.

Further, an intermediate arm 46 is rotatably attached to the proximal end side of the first rotating arm 41 via a support shaft 45. The intermediate arm 46 is formed of a substantially J-shaped flat plate member, and one end 47 a of the first tension coil spring 47 is hooked on the intermediate portion of the intermediate arm 46. Further, the other end 47a of the first tension coil spring 47 is hooked on the side surface of the deck portion 4a as shown in FIGS. Accordingly, the first rotating arm 41 is urged through the intermediate arm 46 direction, i.e. in the arrow a ₂ direction to rotate toward the front side by the first tension coil spring 47.

As shown in FIGS. 3, 5, and 6, the second rotating arm 42 is formed of a long flat plate member, and the left and right other sides (for example, the left side) sandwiching the turntable 27 a of the disk mounting portion 27. located in the base end portion via a support shaft (screw) 48 which is provided on the chassis 14, and is rotatably supported in the arrow b ₁ direction and the arrow b ₂ direction. Further, a second contact pin 42 a that is in contact with the outer peripheral portion of the optical disk 2 inserted from the disk insertion / extraction opening 21 from the back side is provided at the tip of the second rotating arm 42 so as to protrude upward. ing. In addition, the second rotating arm 42 has an intermediate portion in contact with the outer peripheral portion of the optical disc 2 from the back side together with the second contact pin 42a when the optical disc 2 is positioned at the disc mounting position. Two positioning pins 42b are provided protruding upward.

In addition, one end 49 a of the second tension coil spring 49 is hooked on an intermediate portion of the second rotating arm 42. The other end 49 b of the second tension coil spring 49 is hooked to the chassis 14. Accordingly, the second rotating arm 42, a direction to rotate toward the front side by the second tension coil spring 49, i.e., is biased in the arrow b ₂ direction. Further, the second tension coil spring 49 changes the direction of the urging force with respect to the second rotating arm 42 as the second rotating arm 42 is rotated from the front side to the back side. direction to rotate toward the rear side from the direction rotating towards the side, i.e. switched from the arrow b ₂ direction of the arrow b ₁ direction. Conversely, the second tension coil spring 49 changes the direction of the urging force with respect to the second rotating arm 42 as the second rotating arm 42 is rotated from the back side to the front side. direction to rotate toward the front side from the direction to rotate toward the rear side, i.e. switches from the arrow b ₁ direction of the arrow b ₂ direction.

  The first rotating arm 41 and the second rotating arm 42 are arranged at positions that are substantially symmetrical with respect to the turntable 27a of the disk mounting portion 27, and in the initial state, the distal end portion is the base end. It is arranged in a substantially inverted C shape so that the tip portion is located on the front side of the base end portion and located on the inner side of the portion.

  In addition, the disc transport mechanism 40 includes a first gear 50 and a second gear 51 meshed with each other as a connecting mechanism for interlocking the first rotating arm 41 and the second rotating arm 42 with each other. A first connecting arm 52 that connects the first gear 50 and the first rotating arm 41, and a second connecting arm 53 that connects the second gear 51 and the second rotating arm 42. have.

  The first gear 50 and the second gear 51 are located substantially symmetrically with respect to the center line along the insertion direction of the optical disc 2 passing through the turntable 27a on the chassis 14 via the support shafts 50a and 51b. It is mounted for rotation.

  The first connecting arm 52 is formed of a long flat plate member, and one end thereof is rotatably attached to the first rotating arm 41 via a support shaft 54, and downward from the other end. The protruding engaging pin 55 is engaged with an engaging hole 56 provided in the main surface of the first gear 50, thereby connecting the first rotating arm 41 and the first gear 50. Yes. In addition, a guide slit 57 is formed in the middle portion of the first connecting arm 52 in the longitudinal direction. On the other hand, as shown in FIG. 5, a guide shaft 59 inserted through the guide slit 57 is erected on the bottom surface portion of the bottom case 4, and the guide shaft 59 has a screw hole 59a at the tip. doing. As shown in FIG. 6, the intermediate portion of the first connecting arm 52 is screwed into a screw hole 59 a provided at the tip of the guide shaft 59 in a state where the guide shaft 59 is inserted into the guide slit 57. By screwing 60, the guide shaft 59 is supported so as to be movable within a range of sliding in the guide slit 57. Accordingly, the first connecting arm 52 rotates the first gear 50 according to the rotation of the first rotating arm 41 (or the first rotating arm according to the rotation of the first gear 50). 41 can be rotated).

  Similarly, the second connecting arm 53 is formed of a long flat plate member, and one end portion is rotatably attached to the second rotating arm 42 via the support shaft 61 and is downward from the other end portion. The engagement pin 62 projecting toward the engagement portion is engaged with an engagement hole 63 provided in the main surface of the second gear 51, thereby connecting the second rotating arm 42 and the second gear 51. It is connected. A guide slit 64 is formed in the middle portion of the second connection arm 53 in the longitudinal direction. On the other hand, as shown in FIG. 5, a guide shaft 65 inserted through the guide slit 64 is erected on the bottom surface portion of the bottom case 4, and the guide shaft 65 has a screw hole 65a at the tip. doing. As shown in FIG. 6, the intermediate portion of the second connecting arm 53 is screwed into a screw hole 65 a provided at the tip of the guide shaft 65 in a state where the guide shaft 65 is inserted into the guide slit 64. The guide shaft 65 is movably supported within a range in which the guide shaft 65 slides in the guide slit 64 by being screwed together. Thereby, the second connecting arm 53 rotates the second gear 51 according to the rotation of the second rotating arm 42 (or the second rotating arm according to the rotation of the second gear 51). 42 can be rotated).

  As described above, since the first gear 50 and the second gear 51 are engaged with each other, when one gear rotates in one direction, the other gear rotates in the other direction. Become. That is, the first gear 50 and the second gear 51 rotate in opposite directions while interlocking with each other. Therefore, the first rotating arm 41 and the second rotating arm 42 can swing in the opposite directions while being interlocked with each other by such a coupling mechanism.

As shown in FIGS. 3, 5, and 6, the third rotating arm 43 is formed of a long flat plate member, and one of the left and right sides (for example, the right side) sandwiching the turntable 27 a of the disk mounting portion 27. the first is located on the front side of the pivot arm 41, via a support shaft 67 having a base end portion is provided on the deck portion 4a, rotatably in the arrow c ₁ direction and the arrow c ₂ direction It is supported. A third abutting pin 43 a that abuts on the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 21 is provided at the tip of the third rotating arm 43 so as to protrude upward.

Further, as shown in FIGS. 6 and 8, one end 68 a of the third tension coil spring 68 is hooked on the base end side of the third rotating arm 43. The other end 68b of the third tension coil spring 68 is hooked on the side surface of the deck portion 4a. Thus, the third pivot arm 43, a direction to rotate toward the rear side by the third tension coil spring 68, i.e., is biased in the arrow c ₁ direction. Note that, in the initial state, the third rotating arm 43 has a distal end portion located on the inner side of the proximal end portion and a distal end portion located on the front side of the proximal end portion.

  In the disk transport mechanism 40, the first rotating arm 41, the second rotating arm 42, and the third rotating arm 43 cooperate with each other, and the optical disk inserted from the disk insertion / extraction opening 21 of the housing 3. Loading operation for pulling 2 to the disk mounting position to be mounted on the disk mounting portion 27, centering operation for positioning the optical disk 2 at the disk mounting position, and ejecting the optical disk 2 from the disk insertion / removal port 21 to the outside of the housing 3 Perform the action.

  In addition, the disc transport mechanism 40 performs the loading operation, centering operation, and ejecting operation of the optical disc 2 by the first rotating arm 41, the second rotating arm 42, and the third rotating arm 43 described above. A drive lever 69 that is a first slide member that is slid in the direction, a displacement drive mechanism 70 that drives the drive lever 69 to be displaced in the front-rear direction, and a first slide that is slid in the front-rear direction in conjunction with the slide of the drive lever 69. 2 and a movable plate 71 which is a slide member.

  As shown in FIGS. 6, 12, and 13, the drive lever 69 is made of a resin member that is formed in a substantially rectangular parallelepiped shape, and the bottom surface of the bottom case 4 has one side surface portion of the bottom case 4. It is disposed between the circuit board 9 and the base unit 26. The drive lever 69 is positioned below the optical disk 2 inserted into the housing 3 from the disk insertion / removal opening 21 and has a top surface substantially equal to the bottom surface of the deck section 4a. Have.

  The drive lever 69 is formed with a pair of front and rear guide slits 72a and 72b penetrating in the thickness direction in the longitudinal direction. In the drive lever 69, a support shaft of a gear group 77 described later is inserted into the front guide slit 72a, and the guide shaft 59 provided on the bottom surface portion of the bottom case 4 is inserted into the rear guide slit 72b. By doing so, it is slidably supported in the front-rear direction.

  A rack gear 73 is formed on the bottom surface of the drive lever 69 from the front surface side to the midway portion in the longitudinal direction. On the other hand, as shown in FIGS. 3, 5, and 6, the displacement drive mechanism 70 includes a drive motor 75 held by a motor case 74 on the front side of the bottom surface of the bottom case 4, and a rotation shaft of the drive motor 75. And a gear group 77 interposed between the worm gear 76 and the rack gear 73 of the drive lever 69, and these gear groups 77 are respectively pivotally supported on a support shaft on the bottom case 4. Has been. The displacement drive mechanism 70 drives the drive lever 69 to the rear side via the worm gear 76, the gear group 77, and the rack gear 73 by rotating the drive motor 75 in one direction (forward rotation). Then, by driving the drive motor 75 to rotate in the other direction (reverse rotation), the drive lever 69 is displaced to the front side via the worm gear 76, the gear group 77, and the rack gear 73.

  As shown in FIGS. 12 and 13, three guide pieces 78 a, 78 b, 78 c, one guide pin 79, and one screw hole 80 are provided on the upper surface of the drive lever 69. On the other hand, as shown in FIG. 14, the movable plate 71 is made of a sheet metal that has been punched into a predetermined shape, and is disposed on the deck portion 4a. In the movable plate 71, three guide slits 81a, 81b, 81c and one guide slit 81d through which the screw 82 passes are formed in the longitudinal direction. As shown in FIG. 6, the drive lever 69 and the movable plate 71 are configured such that the two guide pieces 78 a and 78 b of the drive lever 69 are engaged with the two guide slits 81 a and 81 b of the movable plate 71. One guide piece 81c of 69 is engaged with the edge of the movable plate 71, the guide pin 79 of the drive lever 69 is engaged with the guide slit 81c of the movable plate 71, and the screw 82 is the guide slit 81d of the movable plate 71. And is slidable in the same direction while being engaged with each other in a plane parallel to the optical disc 2 by being screwed into the screw hole 80 of the drive lever 69.

  Further, between the drive lever 69 and the movable plate 71, when the drive lever 69 is driven to be displaced in the discharge direction of the optical disk 2 by the displacement drive mechanism 70, the disk is ejected from the disk insertion / extraction opening 21 to the outside of the housing 3. A buffer mechanism 83 is provided for absorbing a difference in displacement between the drive lever 69 and the movable plate 71 that is generated by applying an external force to the optical disc 2 that is opposite to the ejection direction of the optical disc 2. .

  This buffer mechanism 83 has a compression coil spring 84 that is a buffer member, and this compression coil spring 84 is held between a pair of guide slits 72a and 72b of the drive lever 69 shown in FIGS. It is held in the hole 85. Further, the end portion on the back side of the compression coil spring 84 is held by a protrusion 85 a protruding from the end portion on the back side of the holding hole 85. On the other hand, the front end portion of the compression coil spring 84 is held by a protrusion 86 protruding from the vicinity of the guide slit 81d of the movable plate 71 shown in FIG.

  As shown in FIGS. 6 and 14, the movable plate 71 rotates the first rotating arm 41 and the second rotating arm 42, so that the first cam pin 87 provided on the intermediate arm 46 has a first cam pin 87. The first cam slit 88 to be engaged, the pressing piece 90 a for pressing the pressed piece 89 provided on the intermediate arm 46 from the back side, and the pressed protrusion 41 c provided on the first rotating arm 41. And a second pressing portion 90b for pressing from the front side.

  The 1st cam slit 88 has the 1st slit part 88a and the 2nd slit part 88b which were formed linearly over the front-back direction, and is linearly formed toward the front from the edge part of the back side. The second slit part 88b formed linearly from the end on the front side to the rear side has a shape slightly offset outward from the formed first slit part 88a.

  The pressing piece 90a is formed so as to protrude outward from the edge of the movable plate 71, and can be brought into contact with the pressed piece 89 that is bent upward from the middle portion of the intermediate arm 46 from the back side. It has become.

  The pressing portion 90 b is formed by partially cutting the rear edge of the movable plate 71, and a pressed protrusion 41 c that protrudes downward from a midway portion of the first rotating arm 41. Can be contacted from the front side.

  Further, since the movable plate 71 rotates the third rotation arm 43, the movable plate 71 has a second cam slit 92 that engages with the second cam pin 91 provided on the third rotation arm 43. Have. The second cam slit 92 has a first slit portion 92a and a second slit portion 92b that are linearly formed in the front-rear direction, and is linear from the end on the back side to the front. The second slit portion 92b formed in a straight line from the front side end portion to the rear side has a shape slightly offset inward from the first slit portion 92a formed in the above. The second cam slit 92 includes a third slit portion 92c formed so as to form an arc inwardly from an end on the back side of the first slit portion 92a to a middle portion in the front, and the third slit portion 92c. And a fourth slit portion 92c formed linearly from the front end of the slit portion 92c toward the middle portion of the first slit portion 92a. The third slit portion 92c and the fourth slit Between the part 92d and the middle part ahead of the 1st slit part 92a, the opening part which the cam pin 91 can move freely is formed.

(1-4) Configuration of Base Elevating Mechanism As shown in FIGS. 3, 5, and 6, the apparatus main body 1 a moves up and down the base 31 of the base unit 26 in conjunction with the slide of the drive lever 69 described above. A base lifting mechanism 93 is provided.

  The base elevating mechanism 93 raises the base 31 to lower the base 31 and lowers the chucking position where the optical disk 2 positioned at the disk mounting position is mounted on the turntable 27a of the disk mounting section 27. A chucking release position for releasing the optical disk 2 from the 27 turntable 27a, and an intermediate position for recording or reproducing a signal to or from the optical disk 2 by positioning the base 31 between the chucking position and the chucking release position. The base 31 is moved up and down.

  In order to move the base 31 up and down, a first cam slit 94 is formed in the longitudinal direction on the side surface of the drive lever 69 that faces the base 31 as shown in FIGS. . The first cam slit 94 includes a first horizontal surface portion 94a for positioning the base 31 at the chucking release position, a top surface portion 94b for positioning the base 31 at the chucking position, and the base 31. And a second horizontal surface portion 94c for positioning at the intermediate position.

  Further, as shown in FIGS. 6 and 15, a cam lever 95, which is a third slide member, is disposed on the bottom surface of the bottom case 4 along the side surface on the back side of the base 31. The cam lever 95 is formed of a long flat plate member, and has a pair of front and rear guide slits 96a and 96b and a guide slit through which the guide shaft 65 is inserted between the pair of guide slits 96a and 96b. 96c is formed over the longitudinal direction. On the other hand, as shown in FIG. 5, a pair of guide pieces 97a and 97b engaged with the pair of guide slits 96a and 96b are formed at the bottom of the bottom case 4 by bending. Thus, the cam lever 95 is supported so as to be slidable in a direction substantially perpendicular to the sliding direction of the drive lever 69 along the side surface on the back side of the base 31.

  Further, a guide pin 98 is formed to project upward at a position intersecting with the drive lever 69 of the cam lever 95 shown in FIG. On the other hand, a guide slit 99 with which the guide pin 98 is engaged is formed on the bottom surface of the drive lever 69 shown in FIGS. The cam lever 95 is slidable in a direction orthogonal to the sliding direction of the drive lever 69 by the guide pin 98 sliding in the guide slit 99 in conjunction with the longitudinal sliding of the drive lever 69. Yes.

  As shown in FIG. 15, a cam piece 100 for raising and lowering the base 31 is formed at the intermediate portion of the cam lever 95 by bending upward from an edge portion facing the base 31. A second cam slit 101 is formed in the cam piece 100. The second cam slit 101 includes a first horizontal surface portion 101a for positioning the base 31 at the chucking release position, and a base. The top surface portion 101b for positioning 31 at the chucking position and the second horizontal surface portion 101c for positioning the base 31 at the intermediate position are provided. Further, as shown in FIG. 5, a bent piece 102 is formed on the bottom surface of the bottom case 4 along the side surface on the back side of the base 31, and the base 31 is attached to the bent piece 102. A vertical slit 103 for raising and lowering is formed.

  On the other hand, as shown in FIGS. 5, 6, and 11, the base 31 is positioned on the side of the disk mounting portion 27 on the side facing the drive lever 69, and the first cam slit 94 of the drive lever 69. The first support shaft 104 that is engaged with and supported by the cam lever 95 and the side of the disc mounting portion 27 that faces the cam lever 95, the second cam slit 101 of the cam piece 100 and the vertical of the bent piece 102. The second support shaft 105 that is supported by being engaged with the slit 103 is located on the front side of the side opposite to the side facing the drive lever 69 and is provided on the other side of the bottom case 4. An insulator 108 made of an elastic member such as rubber is disposed on the front side of the third support shaft 107 rotatably supported by the shaft hole 106 and the side surface opposite to the side surface facing the cam lever 95. Through the bottom And a fixing portion 110 fixed by screws 109 to the bottom portion of the scan 4.

  Accordingly, in the base 31, the first support shaft 104 slides in the first cam slit 94 in conjunction with the slide of the drive lever 69 and the cam lever 95, and the second support shaft 105 is moved to the second cam. By sliding in the slit 101 and the vertical slit 103, the disk mounting portion 27 side can be raised and lowered with respect to the front side.

  Further, as shown in FIGS. 5 and 6, when the base lifting mechanism 93 lowers the base 31, the optical disc 2 mounted on the turntable 27 a of the disc mounting portion 27 is disposed on the bottom surface of the bottom case 4. Is provided with a push-up pin 111 which is a chucking release means for releasing from the turntable 27a. The push-up pin 111 is located in the vicinity of the disc mounting portion 27 of the base unit 26, specifically, on the back side of the base 31 closest to the disc mounting portion 27 and protrudes upward from the bottom surface portion of the bottom case 4. Is provided.

(1-5) Configuration of Disc Guide Mechanism As shown in FIGS. 3, 5, and 6, the apparatus main body 1 a regulates the insertion angle of the optical disc 2 that is inserted into the bottom case 4 from the disc insertion / extraction opening 21. A disc guide mechanism 112 is provided for guiding while guiding.

  The disc guide mechanism 112 has an insertion guide lever 113 that is operated up and down in synchronization with the up and down movement of the base 31 by the base up and down mechanism 93. The insertion guide lever 113 is made of a long 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 a support shaft 114 provided on the base end side. It is engaged with a bearing portion 115 provided on the back side of the motor case 74 and is rotatably supported. Further, a guide pin 116 is formed to protrude toward the drive lever 69 at the distal end portion of the insertion guide lever 113. On the other hand, as shown in FIGS. 12 and 13, the drive lever 69 is provided with a first cam portion 117 to which the guide pin 116 is slidably contacted. 69 has a first horizontal surface portion 117a having a height substantially coinciding with the upper surface portion 69, and a second horizontal surface portion 117b that is one step lower than the first horizontal surface portion 117a.

  Also, as shown in FIGS. 5 and 6, one end of a torsion spring 118 supported on the back surface of the motor case 74 is attached to the proximal end side of the insertion guide lever 113. The proximal end side of the insertion guide lever 113 is urged upward by the elastic force of the torsion spring 118. Conversely, the distal end side of the insertion guide lever 113 is urged downward, and the guide pin 116 is always pressed against the upper surface portion of the first cam portion 117.

  Therefore, when the drive lever 69 is slid in the front-rear direction, the insertion guide lever 113 slides on the upper surface of the first cam portion 117 so that the optical disc 2 inserted from the disc insertion / extraction opening 21 is inserted. It is moved up and down between a guide position that regulates the insertion angle and a retreat position that is separated from the lower surface of the optical disk 2 mounted on the turntable 27a of the disk mounting section 27.

(1-6) Configuration of Shutter Open / Close Mechanism As shown in FIGS. 3, 5, and 6, the apparatus main body 1 a has the optical disk 2 mounted on the turntable 27 a of the disk mounting portion 27 on the front side of the bottom case 4. In this state, a shutter opening / closing mechanism 119 for preventing the new optical disc 2 from being inserted into the housing 3 from the disc insertion / removal opening 21 is provided.

  The shutter opening / closing mechanism 119 has a shutter member 120 that is moved up and down in synchronization with the lifting and lowering operation of the insertion guide lever 113 by the disk guide mechanism 112. The shutter member 120 is formed of a substantially rectangular flat plate member, and the back surface side is engaged with a vertical slit 121 provided on the front surface of the bottom case 4 so as to be slidable in the vertical direction. In addition, the rear side of the shutter member 120 is supported by one end of a rotating arm 122 that is rotatably supported on the side surface of the motor case 74. On the other hand, the other end of the torsion spring 118 is attached to the other end of the rotating arm 122. The other end of the rotating arm 122 is urged upward by the elastic force of the torsion spring 118. On the other hand, one end side of the rotating arm 122 is biased downward, and the shutter member 120 is held downward.

  In the shutter opening / closing mechanism 119, when the insertion guide lever 113 is moved up and down in conjunction with the slide in the front-rear direction of the drive lever 69, the torsion spring 118 supported by the motor case 74 rotates around the axis, The direction of the urging force of the torsion spring 118 is reversed. That is, the other end side of the rotating arm 122 is biased downward by the elastic force of the torsion spring 118, and conversely, one end side of the rotating arm 122 is biased upward. It will be in the state. Thereby, the shutter member 120 is held upward.

  Accordingly, when the drive lever 69 is slid in the front-rear direction, the shutter member 120 follows the path of the optical disk 2 inserted from the disk insertion / removal opening 21 while synchronizing with the lifting / lowering operation of the insertion guide lever 113 by the disk guide mechanism 112. It is moved up and down between the closing position for closing and the open position for opening the path of the optical disk 2 inserted from the disk insertion / removal port 21.

  Incidentally, as shown in FIG. 3, a protective film 123 for preventing contact with the signal recording surface of the optical disc 2 is formed on the second rotating arm 42 and the base 31 described above. The protective film 123 is made of a material with little friction with the optical disc 2 and is provided in a plurality at positions corresponding to the outer peripheral portion of the optical disc 2 at the disc mounting position. A protective sheet 124 is attached to the front side of the base 31 to prevent contact with the signal recording surface of the optical disk 2 inserted from the disk insertion / removal port 21.

  As shown in FIG. 6, among the plurality of detection switches SW1, SW2, and SW3 arranged on the circuit board 9 described above, the first detection switch SW1 is the optical disk 2 inserted from the disk insertion / removal port 21. This is for detecting the presence or absence and instructing the drive start of the drive lever 69, and is arranged in the vicinity of the second connecting arm 53. On the other hand, a pressing piece 125 for pressing the detector of the first detection switch SW1 is formed at the intermediate portion of the second connecting arm 53 by bending from the back side.

  When the first rotation arm 41 and the second rotation arm 42 are rotated to the back side along with the insertion of the optical disc 2, the first detection switch SW <b> 1 moves the detector to the second connection arm 53. The pressing piece 125 is turned on. And while the 1st rotation arm 41 and the 2nd rotation arm 42 are located in the back side rather than this detection position, ie, while the optical disk 2 is in the housing | casing 3, a detection element is set to the press piece 125. FIG. The pressed state is maintained, and the ON state of the first detection switch SW1 is maintained.

  The second detection switch SW <b> 2 and the third detection switch SW <b> 3 are for detecting the position of the drive lever 69 and controlling the drive of the drive lever 69, and are the ends facing the drive lever 69 of the circuit board 9. They are arranged side by side at a predetermined interval on the edge.

  Among these, the second detection switch SW2 is located on the back side with respect to the third detection switch SW3, and the drive lever 69 slides to the back side, and the detector is pressed by the side surface portion of the drive lever 69. , Will be on. While the drive lever 69 is positioned on the back side of the detection position, the detector is pressed against the side surface of the drive lever 69, and the second detection switch SW2 is kept on.

  On the other hand, the third detection switch SW3 is located on the front side of the second detection switch SW2, and when the detector is pushed upward by the second cam portion 126 provided on the side surface portion of the drive lever 69, Turns on. As shown in FIGS. 12 and 13, the second cam portion 126 provided in the drive lever 69 pushes up the detector of the third detection switch SW3 and turns on the third switch SW1. A horizontal plane portion 126a and a second horizontal plane portion 126b that is one step lower than the first horizontal plane portion 126a in order to turn off the third switch SW3 in front of the first horizontal plane portion 126a. have. Note that, in the initial state, the third detection switch SW3 is in an ON state because the detector is pushed up by the first horizontal surface portion 126a.

(2) Operation of Disk Drive Device Next, a specific operation of the disk drive device 1 configured as described above will be described.

(2-1) Initial Operation The disc drive apparatus 1 performs an initial operation before the optical disc 2 is inserted according to the timing chart shown in FIG.

  Specifically, as shown in FIG. 16, first, the personal computer 1000 is powered on, and the supply of power from the apparatus main body 1001 to the apparatus main body 1a via the external connector 12 is started, so that the third detection is performed. When the ON state of the switch SW3 is detected, the displacement drive mechanism 70 slides the drive lever 69 to the front end while rotating the drive motor 75 in the reverse direction. At this time, the third detection switch SW3 is configured such that the detector sliding on the first horizontal surface portion 126a of the second cam portion 126 descends along the inclined surface on the back side of the first horizontal surface portion 126a. , Switching from the on state to the off state.

  Next, when the OFF state of the third detection switch SW3 is detected, the displacement drive mechanism 70 slides the drive lever 69 to the back side while rotating the drive motor 75 forward. When the third detection switch SW3 in the off state is turned on again, the displacement drive mechanism 70 stops driving the drive motor 75.

  Further, when the supply of power to the apparatus main body 1a is started, as shown in FIG. 32, the ON state of the first detection switch SW1 and the second detection switch SW2 is detected, and the third detection switch When the ON state of SW3 is detected, it is determined that the optical disk 2 is mounted on the disk mounting unit 27, and the drive by the drive motor 75 is not started, and a preparation state for a recording / reproducing operation described later is set.

  As described above, the initial operation of the disk drive device 1 is completed.

(2-2) Loading Operation In this disk drive device 1, when the optical disk 2 is inserted from the disk insertion / removal opening 21 of the housing 3, the disk insertion / removal opening 21 moves into the inside of the housing 3 according to the timing chart shown in FIG. 30. A loading operation for drawing the optical disk 2 inserted into the disk to the disk mounting position is performed.

  Specifically, first, from the state shown in FIG. 16, when the optical disk 2 is inserted into the housing 3 from the disk insertion / removal port 21, the optical disk 2 is regulated in the height direction by the pair of guide protrusions 8a and 8b. Then, the optical disc 2 is guided into the housing 3 while the outer peripheral portion of the optical disc 2 is regulated in the height direction and the width direction by the pair of guide members 24a and 24b.

  Further, as shown in FIGS. 22 and 23, the disk guide mechanism 112 is configured such that the guide pin 116 of the insertion guide lever 113 is positioned on the first horizontal surface portion 117a of the first cam portion 117, so The lever 113 regulates the insertion angle of the optical disk 2 inserted from the disk insertion / removal port 21. Thereby, when the optical disk 2 is inserted into the housing 3 from the disk insertion / removal port 21, the signal recording surface of the optical disk 2 is brought into contact with the components on the base 31, and the signal recording surface is prevented from being damaged. It is possible.

  The optical disk 2 inserted from the disk insertion / removal port 21 is brought into contact with the first contact pin 41a of the first rotation arm 41 and the second contact pin 42a of the second rotation arm 42. It becomes a state.

  Next, when the optical disk 2 is further pushed into the housing 3 from the disk insertion / removal opening 21 from this state, the outer peripheral portion of the optical disk 2 is moved to the first contact pin 41a and the second contact hole as shown in FIG. While pressing the contact pin 42a, the first rotating arm 41 and the second rotating arm 42 resist the urging of the first tension coil spring 47 and the second tension coil spring 49, and face each other in the opposite directions. It is turned toward the side. When the first rotation arm 41 and the second rotation arm 42 are rotated by a predetermined amount toward the back side, the first detection switch SW1 is pressed by the pressing piece 125 of the second connection arm 53. The detector is pressed. Accordingly, the first detection switch SW1 is turned on, and the displacement drive mechanism 70 rotates the drive motor 75 forward based on the detection signal from the first detection switch SW1 to the rear side of the drive lever 69. Start the slide.

  On the other hand, as shown in FIG. 16, the third rotating arm 43 has the third contact pin 43 a connected to the optical disk 2 as the optical disk 2 is inserted into the housing 3 from the disk insertion / removal port 2. It will be in the state contact | abutted with the back side of the outer peripheral part. Further, when the optical disk 2 is further pushed into the housing 3 from the disk insertion / removal port 21 from this state, the third rotating arm 43 is moved to the third position while the optical disk 2 presses the third contact pin 43a. The coil spring 68 is rotated outward against the biasing force of the tension coil spring 68. At this time, the third abutment pin 43 a goes around to the front side along the outer peripheral portion of the optical disc 2. Then, this time, the third contact pin 43a is brought into contact with the front surface side of the outer peripheral portion of the optical disc 2, so that the third rotating arm 43 is urged by the third tension coil spring 68 to the back surface side. Rotate toward.

  When the movable plate 71 is slid to the back side in conjunction with the slide of the drive lever 69 to the back side, the second cam pin 91 that slides in the second cam slit 92 is the fourth slit portion. The third rotating arm 43 is rotated toward the back side by being pressed by 92d.

  As a result, the optical disk 2 has the first contact pin 41a and the second contact pin 41a of the first rotating arm 41 urged by the first tension coil spring 47 and the second tension coil spring 49 on the back side of the outer peripheral portion thereof. To the back surface side of the third rotation arm 43 in which the third contact pin 43a is in contact with the front surface side of the outer peripheral portion of the rotation arm 42 while being in contact with the second contact pin 42a. Is turned into the inside of the housing 3.

  The second tension coil spring 49 changes the direction of the urging force with respect to the second turning arm 42 as the second turning arm 42 is turned from the front side to the back side. By switching from the direction of turning toward the back side to the direction of turning toward the back side, the optical disk 2 is helped to be drawn into the housing 3.

  As described above, the first turning arm 41, the second turning arm 42, and the third turning arm 43 cooperate with each other to draw the optical disc 2 to the disc mounting position shown in FIG. Then, the optical disk 2 is transported into the housing 3.

(2-3) Centering Operation Next, in this disk drive device 1, as shown in FIG. 18, the third rotating arm 43 that rotates toward the back side moves the third contact pin 43a to the optical disk 2. The first outer periphery of the optical disk 2 transported to the disk mounting position in contact with the front surface side of the outer peripheral part of the first rotating arm 41 positioned corresponding to the disk mounting position. The optical disc 2 is positioned at the disc mounting position by pressing toward the contact pin 41a and the first positioning pin 41b and the second contact pin 42a and the second positioning pin 42b of the second rotating arm 42. Centering operation is performed.

(2-4) Chunking Operation Next, in this disc drive apparatus 1, as shown in FIGS. 24 and 25, the base lifting mechanism 93 raises the base 31 to raise the optical disc 2 positioned at the disc mounting position. Is mounted on the turntable 27 a of the disk mounting portion 27.

  Specifically, when the cam lever 95 is slid to the left side in conjunction with the slide of the drive lever 69 to the back side, the first support shaft 104 of the base 31 is moved to the first cam slit 94 of the drive lever 69. The second support shaft 105 of the base 31 slides in the second cam slit 101 of the cam piece 100 and the vertical slit 103 of the bent piece 102. Then, the first support shaft 104 slides in the first cam slit 94 from the first horizontal surface portion 94a to the top surface portion 94b, and the second support shaft 105 moves in the second cam slit 101 in the first cam slit 101. By sliding from the horizontal surface portion 101a to the top surface portion 101b, the base 31 is raised to the chucking position.

  At this time, the periphery of the center hole 2a of the optical disc 2 is pressed against the contact projection 7 of the ceiling portion 5a while the engaging projection 34a enters the center hole 2a of the optical disc 2 positioned at the disc mounting position. The optical disk 2 is held on the turntable 27a in a state where the engaging protrusion 34a is engaged with the center hole 2a of the optical disk 2 and the plurality of locking claws 34b are locked around the center hole 2a of the optical disk 2. Is done. As a result, the first chucking operation for mounting the optical disk 2 on the disk mounting portion 27 is performed.

  Next, in the disk drive device 1, as shown in FIG. 19, the movable plate 71 is slid to the end on the back side in conjunction with the slide of the drive lever 69 to the back side.

  At this time, the pressing portion 90b of the movable plate 71 presses the pressed protrusion 41c of the first rotating arm 41 from the front side. As a result, the first rotating arm 41 and the second rotating arm 42 are connected to the first contact pin 41a, the first positioning pin 41b, and the second from the outer periphery of the optical disk 2 at the disk mounting position. The contact pin 42a and the second contact pin 42b are rotated to a position where they are separated from the back side. Further, when the first cam pin 87 of the intermediate arm 46 slides within the first cam slit 88 of the movable plate 71, the position of the first cam pin 87 is changed from the first slit portion 88a to the second slit portion 88b. Switch to.

  On the other hand, when the second cam pin 91 of the third rotating arm 43 slides in the second cam slit 92 of the movable plate 71, the position of the second cam pin 91 is changed from the first slit portion 92a to the second position. It switches to the slit part 92b. As a result, the third rotating arm 43 rotates from the outer peripheral portion of the optical disc 2 at the disc mounting position to a position where the third contact pin 43a is separated from the front side. Thereby, from the outer peripheral part of the optical disk 2 mounted on the disk mounting part 27, the first contact pin 41a and the first positioning pin 41b of the first rotation arm 41 and the second rotation arm 42 are removed. The second contact pin 42a, the second positioning pin 42b, and the third contact pin 43a of the third rotating arm 43 are separated from each other.

  Further, in the disk drive device 1, as shown in FIGS. 26 and 27, when the drive lever 69 is slid to the end on the back side, the cam lever 95 is moved to the left side in conjunction with the slide of the drive lever 69. Slide to the end. At this time, the first support shaft 104 slides in the first cam slit 94 from the top surface portion 94b to the second horizontal surface portion 94c, and the second support shaft 105 passes through the second cam slit 101 in the top surface portion. By sliding from 101b to the second horizontal surface portion 101c, the base 31 is lowered to the intermediate position.

  Here, as shown in FIG. 30, the second detection switch SW <b> 2 is turned on when the detector is pressed against the side surface of the drive lever 69. The third detection switch SW3 is switched from the on state to the off state when the detector slides on the second horizontal surface portion 126b of the second cam portion 126.

  At this time, the spindle motor 28a of the disk rotation drive mechanism 28 rotates the optical disk 2 and shifts the phase of the optical disk 2. Further, the displacement drive mechanism 70 reverses the drive motor 75 to slide the drive lever 69 to the front side.

  When the cam lever 95 is slid rightward in conjunction with the slide of the drive lever 69 to the front side, the first support shaft 104 moves from the second horizontal plane portion 94c in the first cam slit 94. It slides to the top surface part 94b, and the 2nd spindle 105 slides in the 2nd cam slit 101 from the 2nd horizontal surface part 101c to the top surface part 101b. As a result, the second chucking operation for mounting the optical disk 2 on the disk mounting portion 27 is performed in a state where the base 31 is again raised to the chucking position and the phase of the optical disk 2 is shifted.

  In the disk drive device 1, after the second chucking operation described above is completed, the third detection switch SW3 in the off state is turned on by sliding the drive lever 69 toward the front as shown in FIG. The second detection switch in the on state is turned off.

  At this time, the displacement drive mechanism 70 causes the drive motor 75 to rotate forward, whereby the drive lever 69 is slid to the back side. In this disk drive device 1, as shown in FIG. 19, when the movable plate 71 is slid to the end on the back side in conjunction with the slide of the drive lever 69 to the back side, the disk mounting unit 27 The first contact pin 41a and the first positioning pin 41b, and the second contact pin 42a and the second contact pin 42b from the outer peripheral portion of the mounted optical disk 2 to the position where they are separated from the back side. The first rotation arm 41 and the second rotation arm 42 are rotated, and the third rotation arm is moved from the outer peripheral portion of the optical disc 2 to the position where the third contact pin 43a is separated from the front side. 43 is rotated.

  Further, in this disk drive apparatus 1, as shown in FIGS. 26 and 27, when the drive lever 69 is slid to the rear end, the cam lever 95 is slid to the left end, and the base 31 is again moved. Lower to an intermediate position.

  Then, as shown in FIG. 30, when the second detection switch SW2 in the off state is turned on and the third detection switch SW3 in the on state is turned off again, the displacement drive mechanism 70 is driven by the drive motor 75. Stop driving.

  Further, as shown in FIGS. 26 and 27, the disc guide mechanism 112 has the guide pin 116 of the insertion guide lever 113 in the second position of the first cam portion 117 when the drive lever 69 is located at the end on the back side. The insertion guide lever 113 is lowered to a position away from the optical disc 2 mounted on the turntable 27a of the disc mounting portion 27. Thereby, when the optical disk 2 mounted on the turntable 27a is rotationally driven, contact between the insertion guide lever 113 and the signal recording surface of the optical disk can be avoided.

  Further, the shutter opening / closing mechanism 119 raises the shutter member 120 to a position where the path of the optical disk 2 inserted from the disk insertion / removal port 21 is blocked while synchronizing with the downward movement of the insertion guide lever 113. Thereby, it is possible to prevent a new optical disk 2 from being inserted into the housing 3 from the disk insertion / removal opening 21 in a state where the optical disk 2 is mounted on the turntable 27a.

  As described above, the loading operation of the disk drive device 1 is completed.

(2-5) Recording / Reproducing Operation In this disc drive apparatus 1, in the state shown in FIG. 19, FIG. 26 and FIG. 27, information signals are recorded on or reproduced from the optical disc 2 mounted on the disc mounting portion 27. . Specifically, the spindle motor 28a rotates and drives the optical disc 2 integrally with the turntable 27a, and the optical pickup 29 is moved from the outer peripheral side to the inner peripheral side by the pickup feeding mechanism 30, so that focus servo control and tracking servo control are performed. As a result, the TOC data recorded in the lead-in area of the optical disc 2 is read. Thereafter, when the information signal is recorded, the optical pickup 29 is moved 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 29 moves to an address in the program area where the designated data is recorded. The optical pickup 29 performs an information signal writing or reading operation on a desired recording track of the optical disc 2.

  As shown in FIG. 32, during the recording / reproducing operation, the first detection switch SW1 is in the on state, the second detection switch SW2 is in the on state, and the third detection switch SW3 is off. Is in a state.

  As described above, the recording / reproducing operation of the disk drive device 1 is performed.

(2-6) Eject Operation In this disc drive apparatus 1, according to the timing chart shown in FIG. 31, an eject operation for ejecting the optical disc 2 mounted on the disc mounting portion 27 from the disc insertion / extraction opening 21 to the outside of the housing 3 is performed. Do.

  Specifically, first, when an eject button 23 provided on the front panel 20 is pressed or an eject command is sent from the personal computer 1000 to the disk drive device 1, the displacement is determined based on this command. The drive mechanism 70 slides the drive lever 69 to the front side while rotating the drive motor 75 in the reverse direction.

  When the cam lever 95 is slid to the right in conjunction with the slide of the drive lever 69 to the front side, the first support shaft 104 moves from the second horizontal plane portion 94c in the first cam slit 94. It slides to the 1st horizontal surface part 94a through the top surface part 94b, and the 2nd spindle 105 passes through the 2nd cam slit 101 from the 2nd horizontal surface part 101c to the 1st horizontal surface part 101a through the top surface part 101b. And slide. As a result, as shown in FIGS. 22 and 23, the base 31 is lowered to the chucking release position.

(2-7) Chucking Release Operation Next, in this disc drive apparatus 1, the chucking release operation for releasing the optical disc 2 from the turntable 27 a of the disc mounting portion 27 by lowering the base 31 to the chucking release position. I do. Specifically, as shown in FIG. 28, when the base 31 is lowered to the chucking release position, the tip of the push-up pin 111 is not on the inner peripheral side of the optical disk 2 mounted on the turntable 27a of the disk mounting section 27. By contacting the signal recording area, the optical disk 2 is detached from the turntable 27a while pushing up the optical disk 2.

  Further, as shown in FIGS. 22 and 23, the disc guide mechanism 112 has the guide pin 116 of the insertion guide lever 113 connected to the first cam portion 117 as the drive lever 69 slides to the front side. 1 on the horizontal surface portion 117a. As a result, the insertion guide lever 113 rises to a position where the insertion angle of the optical disk 2 inserted from the disk insertion / removal port 21 is regulated.

  Further, the shutter opening / closing mechanism 119 lowers the shutter member 120 to a position where the path of the optical disk 2 inserted from the disk insertion / removal opening 21 is opened in synchronization with the upward movement of the insertion guide lever 113.

  Next, in the disk drive device 1, the movable plate 71 is slid to the front side in the order shown in FIGS. 18, 17 and 16 in conjunction with the slide of the drive lever 69 to the front side. At this time, the pressing piece 90a of the movable plate 71 presses the pressed piece 89 of the intermediate arm 46 from the back side. As a result, the first rotating arm 41 and the second rotating arm 41 are in contact with the first contact pin 41a and the second contact pin 42a from the back side to the outer peripheral portion of the optical disc 2 at the disc mounting position. The rotating arms 42 are rotated toward the front side in opposite directions.

  The first tension coil spring 47 urges the first rotating arm 41 in a direction to rotate toward the front surface side, and the second tension coil spring 49 has the second rotating arm 42 on the back surface. With the rotation from the side to the front side, the direction of the urging force with respect to the second rotation arm 42 is changed from the direction rotating toward the back side to the direction rotating toward the front side. Switch. This helps to eject the optical disk 2 to the outside of the housing 3.

  On the other hand, as shown in FIG. 20, the third rotating arm 43 is configured such that the second cam pin 91 is moved to the second cam of the movable plate 71 as the movable plate 71 is slid to the front end. The inside of the slit 92 is slid along the third slit portion 92c and rotated to the front side.

  As described above, the first turning arm 41, the second turning arm 42, and the third turning arm 43 cooperate with each other to move the optical disc 2 to the disc insertion / removal position shown in FIG. The optical disk 2 is discharged from the disk insertion / removal port 21 to the outside of the housing 3.

  Here, as shown in FIG. 31, the second detection switch SW2 is turned off by releasing the pressing by the side surface portion of the drive lever 69, and the first detection switch SW1 is connected to the second connecting arm. When the pressing by the pressing piece 125 of 53 is released, the state is turned off. In addition, the third detection switch SW3 is configured such that the detector sliding on the first horizontal surface portion 126a of the second cam portion 126 descends along the inclined surface on the back side of the first horizontal surface portion 126a. Switch from on to off.

  At this time, as shown in FIG. 20, the driving lever 69 slides to the front side end, so that the pressing piece 90 a of the movable plate 71 presses the pressed piece 89 of the intermediate arm 46 from the back side. As a result, the first rotating arm 41 rotates to the foremost part, and the optical disk 2 is reliably discharged from the disk insertion / removal opening 21 to a position where the center hole 2a faces the outside of the housing 3.

  Further, after the off state of the third detection switch SW3 is detected, as shown in FIG. 16, the displacement drive mechanism 70 slides the drive lever 69 to the back side while rotating the drive motor 75 forward. When the third detection switch SW3 in the off state is turned on again, the displacement drive mechanism 70 stops driving the drive motor 75.

  As described above, the ejection operation of the disk drive device 1 is performed.

  As described above, in the disk drive device 1, the first rotation arm 41, the second rotation arm 42, and the third rotation arm 43 that cooperate with each other are used to load and eject the optical disk 2. Therefore, as a slot-in type disk drive device, the entire device can be further reduced in size, weight, and thickness.

  Further, in this disk drive apparatus 1, for example, as shown in FIG. 17, an optical disk 200 having a diameter (for example, 8 cm) smaller than a regular size (for example, 12 cm) is inserted into the housing 3 from the disk insertion / removal port 21. Even if it exists, the 1st rotation arm 41 and the 2nd rotation arm 42 to the back side to the position where the detector of the 1st detection switch SW1 is pressed by the pressing piece 125 of the 2nd connection arm 53 And will not rotate. Therefore, in this disk drive apparatus 1, before the first detection switch SW1 is turned on, that is, before the drive lever 69 is started to be driven by the drive motor 75, the disk mounting portion 27 is sandwiched and is substantially symmetrical. The first rotating arm 41 and the second rotating arm 42 arranged in an inverted C shape at the position forcibly causes the small-diameter optical disc 200 to be forced out of the housing 3 from the disc insertion / extraction opening 21. Can be discharged.

  Further, in this disk drive device 1, the above-described centering operation of the optical disk 2 can be performed appropriately and stably by optimizing the arrangement and the rotation direction of the respective rotation arms 41, 42, 43. . That is, in the centering operation of the optical disc 2 described above, as shown in FIG. 18, the third rotating arm 43 that rotates toward the back side moves the third contact pin 43 a to the front surface of the outer peripheral portion of the optical disc 2. The first abutting pin 41a of the first rotating arm 41 positioned corresponding to the disc mounting position, and the outer peripheral portion of the optical disc 2 conveyed to the disc mounting position in a state of being in contact with the disc side. The first positioning pins 41b and the second contact pins 42a and the second positioning pins 42b of the second rotating arm 42 are pressed substantially evenly.

  Therefore, in this disk drive device 1, unlike the disk drive device described in Patent Document 2, the position and the pressing direction of the pins that are in contact with the outer edge of the disk of each oscillating body do not become uneven. There is no need to provide a new disk positioning member or disk guide to solve this problem. In addition, such a stable centering operation can appropriately perform the subsequent chucking operation.

  Further, in this disk drive device 1, after the first chucking operation is performed, the phase of the optical disk 2 is shifted and the second chucking operation is performed, so that the optical disk 2 is securely attached to the disk mounting portion 27. It is possible to install.

  Further, in this disk drive device 1, the base 31 is raised by the structure for attaching the top cover 5 to the bottom case 4 whose rigidity of the housing 3 is improved, and the optical disk 2 is placed on the turntable 27 a of the disk mounting portion 27. It is possible to improve the operation reliability when mounting.

  In the disk drive device 1, the spindle motor 28a of the disk rotation drive mechanism 28 described above rotates and drives the optical disk 2, and the intermediate position for shifting the phase of the optical disk 2 and the recording or reproduction of signals with respect to the optical disk 2 are performed. Although the recording / reproducing position is matched, the intermediate position and the recording / reproducing position are not necessarily matched. That is, in the disk drive device 1, after the chucking operation, the base 31 is lowered, and the disk rotation drive mechanism 28 at the time when the periphery of the center hole 2 a of the optical disk 2 is separated from the abutting protrusion 7 of the ceiling portion 5 a. Since the optical disk 2 can be rotationally driven and the phase of the optical disk 2 can be shifted, the intermediate position and the recording / reproducing position can be set to different positions.

  Further, in this disk drive apparatus 1, since the disk mounting portion 27 side of the base 31 is moved up and down with respect to the front surface side by the base lifting mechanism 93, the phase of the optical disk 2 is shifted by about 180 °. Accordingly, the position of the turntable 27a for performing the first chucking operation and the position of the turntable 27a for performing the second chucking operation can be reversed, and a more reliable chucking operation can be stably performed. is there.

  Here, the chucking operation is performed twice, but the number of times of repeating the chucking operation is arbitrary. In addition, after repeating this chucking operation, when the optical pickup 29 described above moves from the outer peripheral side to the inner peripheral side and the focus servo control and tracking servo control are not applied, the optical disc 2 is forcibly forced by the eject operation. By discharging, the operation of the disk drive device 1 is stabilized.

  Further, in this disc drive apparatus 1, the optical pickup 29 and the signal recording surface of the optical disc 2 during the chucking operation are positioned by positioning the optical pickup 29 on the outer peripheral side in the radial direction until the chunking operation of the optical disc 2 is completed. It is possible to avoid the danger of a collision with

  Further, in this disk drive device 1, the above-described insertion guide lever 113 regulates the insertion angle of the optical disk 2 inserted from the disk insertion / removal opening 21 in synchronization with the raising / lowering operation of the base 31, and the disk mounting portion 27. Since it is moved up and down between the retracted position away from the lower surface of the optical disk 2 mounted on the turntable 27a, an insertion guide member for regulating the insertion angle of the optical disk 2 is provided on the bottom surface portion of the bottom case 4. Even in such a case, it is possible to further reduce the thickness of the entire apparatus by narrowing the range of the raising / lowering operation of the base 31.

  In addition, since the disc drive apparatus 1 includes the shutter member 120 that is operated up and down in synchronization with the up-and-down operation of the insertion guide lever 113, an error may occur when the optical disc 2 is loaded without increasing the overall size of the apparatus. Thus, the optical disk 2 can be prevented from being inserted into the housing 3 from the disk insertion / removal opening 21.

  Further, in this disk drive device 1, for example, as shown in FIG. 21, when the drive lever 69 is driven to be displaced in the ejecting direction of the optical disk 2 by the displacement drive mechanism 70, the disk insertion / removal port 21 moves outside the housing 3. The compression coil spring 84 can absorb the difference in displacement between the drive lever 69 and the movable plate 71 caused by external force applied to the ejected optical disk 2 in the direction opposite to the ejection direction of the optical disk 2. It is.

  Thereby, it is possible to avoid dangers such as damage to the internal mechanism and the optical disk 2 due to an external force applied in the opposite direction to the ejecting operation during the ejecting operation of the optical disk 2.

  Further, in the disk drive device 1, as shown in a buffer mechanism 83 shown in FIG. 33, for example, the disk drive device 1 is movable between the first compression coil spring 84a and the second compression coil spring 84b held in the holding hole 85 of the drive lever 69. It is also possible to adopt a configuration in which a holding portion 127 provided on the plate 71 holds.

  Among these, the first compression coil spring 84 a that is the first buffer member has an end on the back side held by the movable plate 71, and an end on the front side held by the drive lever 69. On the other hand, the front end portion of the second compression coil spring 84 b that is the second buffer member is held by the movable plate 71, and the rear end portion thereof is held by the drive lever 69.

  Thus, in the disk drive device 1, when the drive lever 69 is displaced in the insertion direction of the optical disk 2 by the displacement drive mechanism 70, the optical disk 2 drawn into the housing 3 from the disk insertion / removal port 21 is While the first compression coil spring 84a absorbs the difference in displacement between the drive lever 69 and the movable plate 71 caused by external force applied in the direction opposite to the drawing direction of the optical disk 2, it is driven by the displacement drive mechanism 70. When the lever 69 is displaced and driven in the ejection direction of the optical disk 2, an external force is applied to the optical disk 2 ejected from the disk insertion / removal port 21 to the outside of the housing 3 in the direction opposite to the ejection direction of the optical disk 2. It is possible to absorb the difference in displacement between the drive lever 69 and the movable plate 71 caused by this by the second compression coil spring 84b. It is.

  Further, the first compression coil spring 84a and the second compression coil spring 84b may be one compression coil spring interposed between the drive lever 69 and the movable plate 71. In this case, the compression coil spring is driven by The intermediate portion of the compression coil spring 84 is held by the holding portion 127 provided on the movable plate 71 while being held in the holding hole 85 of the lever 69.

  Also in this case, when the drive lever 69 is displaced in the ejecting direction of the optical disk 2 by the displacement driving mechanism 70, the optical disk 2 is ejected from the disk insertion / removal opening 21 to the outside of the housing 3. When the drive lever 69 is driven to be displaced in the insertion direction of the optical disc 2 by the displacement drive mechanism 70 and the difference in displacement between the drive lever 69 and the movable plate 71 caused by an external force applied in the direction opposite to the ejection direction, The amount of displacement between the drive lever 69 and the movable plate 71 caused by an external force applied to the optical disc 2 drawn into the housing 3 from the disc insertion / removal opening 21 in the direction opposite to the drawing direction of the optical disc 2. This difference can be absorbed by this compression coil spring.

Industrial availability

  The present invention is not limited to the slot-in type disk drive device 1 mounted on the above-described notebook personal computer 1000, and is a disk drive that records and / or reproduces information signals with respect to an optical disk. Widely applicable to devices.

1 is a perspective view showing an external appearance of a notebook personal computer equipped with a disk drive device to which the present invention is applied. FIG. It is a perspective view which shows the external appearance of a disk drive apparatus. It is a disassembled perspective view which shows the structure of an apparatus main body, a top cover, and a front panel. It is the perspective view which looked at the top cover from the inner surface side. It is a disassembled perspective view which shows the structure of an apparatus main body. It is a top view which shows the structure of an apparatus main body. It is a rear view which shows the structure of an apparatus main body. It is a side view which shows the structure of an apparatus main body. (A) is a perspective view of the one guide member from the upper side, (b) is a perspective view of the one guide member from the lower side, (c), the X ₁ -X ₁ 'Cross section. (A) is a perspective view of the other guide member from the upper side, (b) is a perspective view of the other guide member from the lower side, (c), the X ₂ -X ₂ 'Cross section. It is a perspective view which shows the structure of a base unit. (A) is the perspective view which looked at the drive lever from the upper side, (b) is the perspective view which looked at the drive lever from the lower side. (A) is the top view which looked at the drive lever from the upper side, (b) is the bottom view which looked at the drive lever from the lower side, (c) is the side view which looked at the drive lever from one side It is a figure and (d) is the side view which looked at the drive lever from the other side. (A) is a perspective view which shows the structure of a movable plate, (b) is a top view which shows the structure of a movable plate. (A) is a perspective view which shows the structure of a cam lever, (b) is a top view which shows the structure of a cam lever, (c) is a side view which shows the structure of a cam lever. It is a figure for demonstrating operation | movement of a disc insertion / removal mechanism, and is a top view which shows the state in which the disc was inserted to the disc insertion / removal position. It is a figure for demonstrating operation | movement of a disc insertion / removal mechanism, and is a top view which shows the state by which the conveyance operation of the disc was started. It is a figure for demonstrating operation | movement of a disc insertion / removal mechanism, and is a top view which shows the state by which the disc was conveyed to the disc mounting position. It is a figure for demonstrating operation | movement of a disc insertion / removal mechanism, and is a top view which shows the state which the conveyance operation of the disc was complete | finished. It is a figure for demonstrating operation | movement of a disk insertion / removal mechanism, and is a top view which shows the state by which the disk was discharged | emitted to the disk insertion / removal position. It is a figure for demonstrating operation | movement of a disc insertion / removal mechanism, and is a top view which shows the state by which the disc was forcibly pushed inside the housing | casing at the time of eject operation | movement. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, a guide raising / lowering mechanism, and a shutter opening / closing mechanism, (a) is a top view which shows the state in which a base unit exists in a chucking release position, (b) is the figure It is a side view which shows the positional relationship of the 1st spindle of the base in a chucking release position, and the 1st cam slit of a drive lever, (c) is the 2nd spindle of the base in the chucking release position It is a side view which shows the positional relationship with the 2nd cam slit of a cam piece, and the vertical slit of a bending piece. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, a guide raising / lowering mechanism, and a shutter opening / closing mechanism, and is sectional drawing which shows the state which has a base unit in a chucking release position. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, a guide raising / lowering mechanism, and a shutter opening / closing mechanism, (a) is a top view which shows the state in which a base unit exists in a chucking position, (b) is the chuck | chuck. It is a side view which shows the positional relationship of the 1st spindle of the base in a king position, and the 1st cam slit of a drive lever, (c) is the 2nd spindle of the base in the chucking position, and a cam piece It is a side view which shows the positional relationship with the 2nd cam slit of this, and the vertical slit of a bending piece. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, a guide raising / lowering mechanism, and a shutter opening / closing mechanism, and is sectional drawing which shows the state which has a base unit in a chucking position. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, a guide raising / lowering mechanism, and a shutter opening / closing mechanism, (a) is a top view which shows the state in which a base unit exists in a recording / reproducing position, (b) is the recording. It is a side view which shows the positional relationship of the 1st support shaft of the base in a reproduction | regeneration position, and the 1st cam slit of a slide lever, (c) is the 2nd support shaft of the base and the cam piece in the recording / reproduction position. It is a side view which shows the positional relationship with the 2nd cam slit of this, and the vertical slit of a bending piece. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, a guide raising / lowering mechanism, and a shutter opening / closing mechanism, and is sectional drawing which shows the state which has a base unit in a recording / reproducing position. It is a figure for demonstrating operation | movement of a base raising / lowering mechanism, a guide raising / lowering mechanism, and a shutter opening / closing mechanism, and is sectional drawing which shows the state in which the disk contact | abutted with the raising pin. 6 is a timing chart showing switching states of the first switch, the second switch, and the third switch during the initial operation of the disk drive device. 6 is a timing chart showing switching states of the first switch, the second switch, and the third switch during the loading operation of the disk drive device. 6 is a timing chart showing switching states of the first switch, the second switch, and the third switch during the eject operation of the disk drive device. 6 is a timing chart showing switching states of a first switch, a second switch, and a third switch during a recording / reproducing operation of the disk drive device. It is a top view which shows the modification of a buffer mechanism.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Disc drive apparatus, 2 Optical disk, 3 Housing | casing, 4 Bottom case, 5 Top cover, 9 Circuit board, 12 Connector, 14 Chassis, 24a, 24b A pair of guide member, 26 Base unit, 27 Disc mounting part, 27a Turntable 28 disk rotation drive mechanism, 31 base, 34 chucking mechanism, 40 disk transport mechanism, 41 first rotation arm, 42 second rotation arm, 43 third rotation arm, 46 intermediate arm, 47 first 1 tension coil spring, 49 second tension coil spring, 50 first gear, 51 second gear, 52 first coupling arm, 53 second coupling arm, 68 third tension coil spring, 69 drive lever, 70 Displacement drive mechanism, 71 Movable plate, 8 Buffer mechanism, 84 compression coil spring, 93 base lifting mechanism, 95 cam lever, 111 push-up pin, 112 disc guide mechanism, 113 insertion guide lever, 119 shutter opening / closing mechanism, 120 shutter member, SW1 first detection switch, SW2 second detection Switch, SW3 third detection switch

Claims (3)

A housing provided with a disk insertion / removal port through which an optical disk is inserted / removed on the front surface;
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 signals to and from the optical disk that is rotationally driven by a driving mechanism; and a pickup feeding mechanism that feeds the optical pickup over the inner and outer circumferences of the optical disk. A base unit that is integrated with the base;
A contact portion that comes into contact with the outer peripheral portion of the optical disc inserted from the disc insertion / removal opening is provided at the distal end portion, and the base end portion is rotatably supported, so that a surface parallel to the optical disc is provided. The optical disk inserted from the disk insertion / removal port of the housing is connected to the disk mounting portion while the plurality of rotation members cooperate with each other. A disk transport mechanism for performing a loading operation for pulling up to a mounted disk mounting position and an ejecting operation for discharging the optical disk from the disk insertion / removal port to the outside of the housing;
A chucking position for mounting the optical disk positioned at the disk mounting position by raising the base to the disk mounting part, and a chucking release for lowering the base and removing the optical disk from the disk mounting part. A base lifting mechanism that lifts and lowers the base between the positions;
An insertion guide member that guides the optical disc inserted from the disc insertion / removal opening while restricting the insertion angle, and moves the insertion guide member up and down while synchronizing with the up and down operation of the base by the base up and down mechanism. A disk drive device comprising a disk guide mechanism.   When the base is in the chucking release position, the disk guide mechanism raises the insertion guide member to a guide position that regulates an insertion angle of the optical disk inserted from the disk insertion / removal port, and the base is 2. The disk drive device according to claim 1, wherein, when in the chucking position, the insertion guide member is lowered to a retracted position separated from the optical disk mounted on the disk mounting portion. A shutter opening / closing mechanism for preventing a new optical disk from being inserted into the housing through the disk insertion / removal port when the optical disk is mounted on the disk mounting unit;
The shutter opening / closing mechanism is inserted from the disk insertion / removal opening and a closing position for closing the path of the optical disk inserted from the disk insertion / removal opening while being synchronized with the lifting / lowering operation of the insertion guide member by the disk guide mechanism. 2. The disk drive apparatus according to claim 1, further comprising a shutter member that is moved up and down between an open position for opening the path of the optical disk.

Images