JP4811150B2 - Disk drive device - Google Patents

Description

  The present invention relates to a disk drive device that records and / or reproduces information signals with respect to an optical disk, and more particularly to a so-called slot-in type disk drive device in which an optical disk is directly inserted into the main body of the apparatus.

  Conventionally, optical disks such as CD (Compact Disk), DVD (Digital Versatile Disk) and BD (Blue-ray Disk), and magneto-optical disks such as MO (Magneto optical) and MD (Mini Disk) are widely known as optical disks. Various disk drive devices corresponding to these disks, disk cartridges, and the like have appeared.

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

  On the other hand, there is a so-called slot-in type disk drive device in which a disk is automatically mounted on a turntable simply by inserting a disk from a disk insertion / removal opening provided on the front surface of a housing. The slot-in type disk drive device includes a pair of opposing guide rollers that sandwich the disk inserted from the disk insertion / removal opening, and rotates the pair of guide rollers in opposite directions to thereby remove the disk insertion / removal opening. There is a type that performs a loading operation of drawing an inserted disk into the housing and an ejecting operation of ejecting the disk from the disk insertion / removal port to the outside of the housing.

  Further, for example, mobile devices such as notebook personal computers equipped with a disk drive device are required to be further reduced in size, weight, and thickness, and the accompanying demand for reduction in size, weight, and thickness of the disk drive device is increasing. Therefore, in the slot-in type disk drive device, a contact portion that is in contact with the outer peripheral portion of the disk inserted from the disk insertion / removal port of the front panel is provided at the distal end portion, and the base end portion is rotatably supported. A plurality of rotating arms are arranged, and while the rotating arms are rotated in a plane parallel to the disk, a loading operation for pulling the disk from the disk insertion / removal opening into the housing and a disk insertion / removal opening A disk drive device that performs an ejection operation for discharging from the housing to the outside of the housing is supplied (for example, see Patent Document 1). Ether.). Among the disk drive devices that have been reduced in thickness as described above, the ultra-thin disk drive device mounted on a notebook personal computer or the like has a thickness of 12.7 mm or a hard disk drive that is further reduced in thickness. A disk drive device that has been reduced to 9.5 mm, which is the same thickness as an (HDD) unit, has also been proposed.

  In a disk drive apparatus in which a plurality of rotating arms are arranged and the disk loading operation and the ejecting operation are performed while rotating the rotating arms in a plane parallel to the disk, the direction of ejecting the optical disk The optical disk is ejected by rotating the rotating arm by an urging member such as a torsion coil spring that is urged to rotate. Here, when ejecting the optical disk to the outside of the housing, it is required that the opening formed in the center of the optical disk is exposed to the outside and is stopped at a position where the optical disk does not fall due to its own weight. This is because the user can grip the opening and the side surface of the optical disk by being kept at such a position, and can handle the optical disk without touching the signal recording surface.

  However, the disk drive device has a structure in which the plurality of rotating arms do not start the retraction operation unless the user inserts the housing to some extent. Therefore, in the disk loading operation up to the pull-in start position by the user, the optical disk may collide with the optical pickup or the disk table.

  The disk drive device is urged to rotate in the direction of ejecting the optical disk by the urging member, and the optical disk is ejected by the urging force of the urging member. The optical disk will be pulled in against the forces. Generally, an urging member such as a coil spring has a property that the urging force increases as the load increases. Therefore, in the above disk drive device, when the disk loading operation proceeds and the optical disk is loaded into the housing, the rotational urging force by the rotating arm becomes very large, and a large load is applied to the optical disk. Will also be lost.

JP 2005-100595 A

  Accordingly, the present invention has been made in view of such a conventional situation, and in a so-called slot-in type disk drive device in which an optical disk is directly inserted into the main body of the apparatus, the load on the optical disk is reduced and the optical disk is reduced. It is an object of the present invention to provide a disk drive device that can perform good transport.

In order to achieve the above-described object, a disk drive device according to the present invention is provided in a device main body provided with a rectangular disk insertion / removal port on the front surface side through which a disk is inserted / removed; A disk holding part for rotatably holding the disk, an arm part having a fulcrum part on the back side of the apparatus main body with respect to the disk holding part and rotatably supported on the disk insertion / removal side; and the arm A support arm that is formed at the front end of the disc and supports a side surface on the front side in the insertion direction of the disc. The support arm supports the disc transported to the disc holding portion, and the support arm serves as the disc. An urging member that is urged to rotate toward the insertion / removal port; and a moving member that moves a fulcrum of the urging member in accordance with conveyance of the disc to the disc holding portion. A spring is anchored at one end to the arm is locked at the other end to the moving member, the moving member, the locking portion of the coil spring is moved in the same direction as the conveying direction of the disc It is characterized by.

  In the present invention, by providing a support arm having a moving member that moves the fulcrum of the urging member, the urging force does not increase according to the rotation of the support arm, and the load on the disk is reduced while supporting the disk. In addition, the insertion feeling can be improved.

  Hereinafter, a disk drive device to which the present invention is applied will be described in detail with reference to the drawings. For example, as shown in FIG. 1, the disk drive device 1 is 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. 2, the disk drive device 1 has a structure in which the entire device is thinned to about 12.7 mm, for example, a CD (Compact Disk), a DVD (Digital Versatile Disk), a BD ( It is possible to record / reproduce information signals to / from an optical disc 2 such as a blue-ray disc.

  First, a specific configuration of the disk drive device 1 will be described. As shown in FIGS. 3 to 5, the disk drive device 1 includes a housing 3 serving as an outer housing of the device main body. The housing 3 includes a bottom case 4 having a substantially flat box shape as a lower housing. The top cover 5 is a top plate that covers the upper opening of the bottom case 4. A main chassis that covers a disk transport mechanism 50 that transmits a drive force of the drive mechanism 120 and a drive mechanism 120 that transmits a drive force of the drive mechanism 120 and a base unit 22 that will be described later face upward in the housing 3. 6 is attached.

  As shown in FIGS. 2 and 5, the top cover 5 is made of thin sheet metal, and a top plate portion 5 a that closes the upper opening of the bottom case 4, and the periphery of the top plate portion 5 a is on both side surfaces of the bottom case 4. And a pair of side plate portions 5b that are slightly bent along. A substantially circular opening 7 is formed at a substantially central portion of the top plate portion 5a. The opening 7 is provided so that the engaging protrusion 33a of the turntable 23a that is engaged with the center hole 2a of the optical disc 2 is exposed to the outside during a chucking operation described later. Further, the periphery of the opening 7 of the top plate portion 5a slightly protrudes toward the inside of the housing 3 so as to come into contact with the periphery of the center hole 2a of the optical disc 2 held on the turntable 23a. A contact protrusion 8 is formed.

  A pair of guide projections 11 a and 11 b that guide the optical disk 2 inserted from a disk insertion / removal opening 19 described later while regulating the height of the optical disk 2 in the height direction are swelled toward the inside of the housing 3. Has been formed. The pair of guide protrusions 11a and 11b 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 7, Further, it has a substantially partial conical shape that is raised so that the arc continuously reduces 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 11a and 11b 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.

  By having such a shape, the pair of guide protrusions 11a and 11b 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 port 19. be able to. Moreover, the top cover 5 can improve the rigidity of the top plate part 5a by providing the guide protrusions 11a and 11b having such shapes. 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.

  The bottom case 4 is made of a sheet metal formed in a substantially flat box shape, and the bottom surface portion thereof is substantially rectangular. On one side surface portion, a deck portion that is raised from the bottom surface portion and projects outward. 4a is provided. In the deck portion 4a, a loading arm 51 for drawing an optical disk 2 to be described later into the housing 3, a deck arm 200 for preventing the small-diameter optical disk 101 from being erroneously inserted and centering the large-diameter optical disk 2, and the deck arm A restricting arm 212 for controlling the urging force is rotatably supported.

  On the bottom surface of the bottom case 4, electronic parts such as an IC chip constituting the drive control circuit, connectors for electrical connection of each part, detection switches for detecting the operation of each part, and the like are arranged. A circuit board 59 is attached by screwing or the like. A connector opening 4b is provided on a part of the outer peripheral wall of the bottom case 4 so that the connector mounted on the circuit board 59 faces the outside.

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

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

  A front panel 18 having a substantially rectangular flat plate shape is attached to the front surface of the housing 3 as shown in FIG. The front panel 18 is provided with a rectangular disk insertion / removal port 19 through which the optical disk 2 is inserted and removed in the horizontal direction. That is, the optical disk 2 can be inserted into the housing 3 from the disk insertion / removal opening 19 or discharged from the disk insertion / removal opening 19 to the outside of the housing 3. The disk insertion / removal opening 19 is formed with panel curtains (not shown) on both sides in the direction orthogonal to the longitudinal direction. The panel curtain is made of non-woven fabric or the like cut into a long shape, and is adhered to the back side of the front panel 18 with an adhesive or the like, thereby preventing dust and the like from entering the housing 3 and optical discs. When the disk 2 is inserted and removed, it comes into sliding contact with the disk surface, whereby dust and the like attached to the optical disk 2 can be removed.

  Further, on the front surface of the front panel 18, a display unit 20 that lights and displays an access state with respect to the optical disc 2 and an eject button 21 that is pressed when the optical disc 2 is ejected are provided.

  A pair of guide protrusions 124 and 124 for sliding a slider 122 of a drive mechanism 120 (to be described later) along the one side surface are provided on the one side surface near one side surface of the bottom case 4 where the deck portion 4a is provided. It protrudes apart along the line (see FIG. 9).

  Further, as shown in FIGS. 3 and 4, the main chassis 6 is attached to the bottom surface of the bottom case 4 by screws. The main chassis 6 is disposed above the circuit board 59 so as to partition the inside of the bottom case 4 vertically at substantially the same height as the deck portion 4a. As a result, the housing 3 has a disk transport area in which the loading arm 51, the ejecting arm 52, and the deck arm 200 are pivotably exposed on the top cover 5 side from the main chassis 6, and the bottom case 4 side is driven from the main chassis 6. Arrangement of the drive mechanism 120 including the motor 121 and the slider 122, and the first and second link arms 54 and 55, the operation arm 58, and the loop cam 57 of the disk transport mechanism 50 that transmits the drive force of the drive motor 121 to the eject arm 52. It is the installation area.

  The main chassis 6 is made of a substantially flat plate-like sheet metal. The upper surface 6a covers the bottom case 4 from the back side of the bottom case 4 to one side surface where the deck portion 4a is formed, and the periphery of the upper surface 6a is the bottom case. 4 and a pair of side plate parts 6b bent along both side surfaces. Further, the main chassis 6 is formed with a base opening 6c and an eject arm opening 6d on the upper surface 6a so that the base unit 22 and the eject arm 52 of the disk transport mechanism 50 face the transport area of the optical disk 2, respectively. A side plate opening 6e through which the loading cam plate 53 connected to the slider 122 slid by the drive motor 121 is inserted is formed in the side plate portion 6b on the side where the deck portion 4a is provided.

  To the upper surface 6 a of the main chassis 6, on the bottom case 4 side, the eject arm 52 of the disk transport mechanism 50 that transports the optical disk 2 in and out of the housing 3 and the driving force of the drive mechanism 120 are transmitted to the eject arm 52. The operating arm 58 for operating the loop cam 57 and the loop cam 57 for guiding the movement of the second link arm 55 are locked. Further, the upper surface 6a is adjacent to the base unit 22 and has a side edge facing the disk insertion / removal port 19, a pickup part 90 provided in an eject arm 52 described later, and an edge part 17 on which the second pickup part 250 slides. Is done.

  The main chassis 6 has a side wall in the vicinity of the corner portion on the back side of the housing 3 to which the loop cam 57 is locked and on the other side surface on which the eject arm 52 and the first and second link arms 54 and 55 are provided. A locking portion 98 is formed in which a tension coil spring 56 that biases the eject arm 52 in the ejecting direction of the optical disk 2 via the first link arm 54 is locked.

  The main chassis 6 is provided with a plurality of guide pieces 6 f on the side plate portions 6 b on both sides, and through holes 6 g for fixing to the bottom case 4. On the other hand, screw holes 4c are formed in the bottom case 4 at positions corresponding to the through holes 6g, and the main chassis 6 is fixed by screwing screws into the screw holes 4c and the through holes 6g.

  Further, the main chassis 6 is formed with a centering guide opening 6h from which a guide piece 221 of a centering guide 220 described later is projected in the vicinity of the eject arm opening 6d.

  The disk drive device 1 includes a base unit 22 that constitutes a drive body on the bottom surface of the bottom case 4. As shown in FIG. 6, the base unit 22 has a base chassis 27 formed of a substantially rectangular frame body, and the base chassis 27 is supported by the sub chassis 29 via a plurality of dampers 28 a to 28 c. In the base unit 22, the base chassis 27 is disposed in the bottom case 4 via the sub-chassis 29, so that one end side in the longitudinal direction is positioned at the approximate center of the housing 3. The base unit 22 has, on one end side in the longitudinal direction, a disk mounting portion 23 on which the optical disk 2 inserted into the housing 3 from the disk insertion / removal port 19 is mounted, and the optical disk 2 mounted on the disk mounting portion 23. And a disk rotation drive mechanism 24 for rotating the disk. The base unit 22 also includes an optical pickup 25 that writes or reads signals to and from the optical disk 2 that is rotationally driven by the disk rotation drive mechanism 24, and the optical pickup 25 that transports the optical pickup 25 in the longitudinal direction. A pickup feeding mechanism 26 that feeds in the radial direction is provided, and these are integrally provided in the base chassis 27. The base unit 22 is moved up and down with respect to the optical disc 2 by a base lifting mechanism 150 (to be described later) integrally with the sub chassis 29 when the base chassis 27 is supported by the sub chassis 29.

  The base unit 22 faces the disk transport area from the base opening 6c of the main chassis 6 so that the disk mounting portion 23 is positioned substantially in the center of the bottom surface of the bottom case 4. The base unit 22 can be moved up and down by a base lifting mechanism 150, which will be described later. In the initial state, the base unit 22 is positioned below the optical disk 2 that is inserted into the housing 3 from the disk insertion / removal port 19. The optical disc 2 is rotated with the loading operation and engages the optical disc 2 in a rotatable manner. After the recording / reproducing operation, the base unit 22 is lowered by the base elevating mechanism 150 to be disengaged from the optical disc 2 and retracted from the transport area of the optical disc 2.

  The base chassis 27 is formed by punching a sheet metal into a predetermined shape and bending the periphery slightly downward. On the main surface of the base chassis 27, a substantially semicircular table opening 27a for facing a turntable 23a of a disk mounting portion 23 described later upward, and an objective lens 25a of an optical pickup 25 described later upward. A substantially rectangular pick-up opening 27b is continuously formed. As shown in FIG. 3, a decorative board 30 in which openings corresponding to the openings 27 a and 27 b are formed is attached to the upper surface of the base chassis 27.

  The base chassis 27 is formed with a guide plate 32 at the end opposite to the disk mounting portion 23 to prevent the optical disk 2 from contacting the base chassis 27 and guide the optical disk 2 to the support portion 88 of the eject arm 52. Yes. A fiber sheet (not shown) is affixed to the guide plate 32, and the signal recording surface of the optical disc 2 can be prevented from being damaged even when the optical disc 2 is slidably contacted.

  In the base chassis 27, connecting pieces 41a and 41b connected to the sub-chassis 29 via dampers 28a and 28b protrude from both side surfaces in the longitudinal direction. Each connecting piece 41a, 41b is continuous with the connecting pieces 45a, 45b formed in the subchassis 29, and is provided with an insertion hole 43 through which the stepped screw 42 is inserted.

  The disc mounting portion 23 has a turntable 23a that is rotationally driven by a disc rotation drive mechanism 24, and a chucking mechanism 33 for mounting the optical disc 2 is provided at the center of the turntable 23a. The chucking mechanism 33 includes an engaging protrusion 33a that engages with the center hole 2a of the optical disc 2, and a plurality of portions that lock the periphery of the center hole 2a of the optical disc 2 that is engaged with the engaging protrusion 33a. The optical disc 2 is held on the turntable 23a.

  The disk rotation drive mechanism 24 includes a flat spindle motor 24a that rotates the optical disk 2 integrally with the turntable 23a. The spindle motor 24a includes a turntable 23a provided on the upper surface portion of the table of the base chassis 27. It is attached to the lower surface of the base chassis 27 via a support plate 24b by screws so as to slightly protrude from the opening 27a for use.

  The optical pickup 25 condenses the light beam emitted from the semiconductor laser as the light source by the objective lens 25 a and irradiates the signal recording surface of the optical disc 2, and returns the light beam reflected by the signal recording surface of the optical disc 2. And an optical block that detects light by a light detector composed of a light receiving element or the like, and writes or reads a signal to or from the optical disc 2.

  The optical pickup 25 also drives an objective lens such as a biaxial actuator that drives the objective lens 25a in the optical axis direction (referred to as the focusing direction) and the direction orthogonal to the recording track of the optical disc (referred to as the tracking direction). Based on the detection signal from the optical disk 2 detected by the above-described photodetector, the objective lens 25a is displaced in the focusing direction and the tracking direction by the biaxial actuator on the signal recording surface of the optical disk 2. Further, drive control is performed such as a focus servo for focusing the objective lens 25a and a tracking servo for causing the spot of the light beam collected by the objective lens 25a to follow the recording track. As the objective lens driving mechanism, in addition to such focusing control and tracking control, the signal of the optical disc 2 is irradiated so that the light beam condensed by the objective lens 25a is irradiated perpendicularly to the signal recording surface of the optical disc 2. A triaxial actuator that can adjust the inclination (skew) of the objective lens 25a with respect to the recording surface may be used.

  The pickup feeding mechanism 26 includes a pickup base 34 on which the optical pickup 25 is mounted, a pair of guide shafts 35 a and 35 b that slidably support the pickup base 34 in the radial direction of the optical disc 2, and the pair of guide shafts 35 a, It has a displacement drive mechanism 36 for driving the pickup base 34 supported by 35b in the radial direction of the optical disc 2.

  Of the pair of guide shafts 35a and 35b, the pickup base 34 is formed with a pair of guide pieces 37a and 37b formed with a guide hole through which one guide shaft 35a is inserted, and a guide groove for sandwiching the other guide shaft 35b. The guide piece 38 is formed so as to protrude from the opposite side surfaces. As a result, the pickup base 34 is slidably supported by the pair of guide shafts 35a and 35b.

  The pair of guide shafts 35 a and 35 b are disposed on the lower surface of the base chassis 27 so as to be parallel to the radial direction of the optical disc 2, and the pickup base 34 that the optical pickup 25 faces from the pickup opening 27 b of the base chassis 27. Is guided over the inner and outer peripheries of the optical disc 2.

  The displacement drive mechanism 36 converts the rotational drive of the drive motor 31 attached to the base chassis 27 to linear drive via a gear or a rack (not shown), and the pickup base 34 is converted into a pair of guide shafts 35a and 35b. For example, a stepping motor provided with a lead screw is used for displacement driving in the radial direction of the optical disc 2.

  Next, the sub chassis 29 that supports the base chassis 27 via the dampers 28 will be described. The sub chassis 29 is moved up and down in accordance with the transport of the optical disk 2 by a base lifting mechanism 150 described later, thereby bringing the base chassis 27 close to or away from the optical disk 2. The sub-chassis 29 has substantially the same shape as the outer shape of the base chassis 27, is formed of a substantially rectangular frame body slightly larger than the base chassis 27, and is connected to the base chassis 27 so as to be integrated with the base chassis 27. The base unit 22 is configured. The sub chassis 29 is provided along the side surface where the guide shaft 35 a is provided, and a reinforcing chassis 44 that reinforces the sub chassis 29 is integrally attached. Further, the sub chassis 29 is formed with connecting pieces 45 a and 45 b to which the dampers 28 a and 28 b are attached and connected to the base chassis 27. The connecting piece 45a is provided on one side surface extending in the longitudinal direction and corresponding to the connecting piece 41a of the base chassis 27, and the connecting piece 45b is provided on the other side surface extending in the longitudinal direction on the connecting piece 41b of the base chassis 27. It protrudes at the end of the corresponding disk mounting portion 23 side.

  Note that the connecting piece of the base chassis 27 is connected to the reinforcing chassis 44 fixed to the sub-chassis 29 at the end opposite to the disk mounting portion 23 on the other side surface in the longitudinal direction. A connecting piece 45c is provided corresponding to 41c. As shown in FIG. 7, the connection pieces 45 a to 45 c are formed with insertion holes 46 that are continuous with the insertion holes 43 of the connection pieces 41 a to 41 c of the base chassis 27. Dampers 28a to 28c are attached to the connecting pieces 45a to 45c, respectively, and are connected to the connecting pieces 41a to 41c of the base chassis 27 via the dampers 28a to 28c, and stepped screws 42 are connected to the respective insertion holes 43. , 46 is inserted.

  Further, as shown in FIG. 6, the subchassis 29 is positioned on the side of the disk mounting portion 23 on the side facing the slider 122 described later, and is engaged with and supported by the first cam slit 130 of the slider 122. The first support shaft 47 and the second support shaft 48 that is positioned on the side of the disc mounting portion 23 on the side facing the sub-slider 151 and is supported by being engaged with the second cam slit 170 of the sub-slider 151. And a third support shaft 49 which is positioned on the front side of the side opposite to the side facing the slider 122 and is rotatably supported by the shaft hole 9 provided in the side plate portion 6b of the main chassis 6. And have.

  Therefore, in the sub chassis 29, the first support shaft 47 slides in the first cam slit 130 in conjunction with the sliding of the slider 122 and the sub slider 151, and the second support shaft 48 is the second support shaft 48. By sliding in the cam slit 170, the disk mounting portion 23 side is rotated about the third support shaft 49, and the base chassis 27 can be raised and lowered.

  Further, as shown in FIG. 3, the bottom case 4 is provided with a support that prevents the eject arm 52 from bending downward when the eject arm 52 described later rotates around the disc mounting portion 23. A pin 10 is erected. The support pin 10 is for preventing the optical disk 2 from colliding with the disk mounting portion 23 and being damaged when the eject arm 52 is bent downward. This support pin 10 is located in the vicinity of the disk mounting portion 23 of the base unit 22 and protrudes upward from the bottom surface portion of the bottom case 4, and is inserted through an insertion hole 30 a formed in the decorative plate 30 to convey the disk. It is on the area.

  The base unit 22 having such a configuration is moved up and down in the direction of arrow A and the direction of counter arrow A as shown in the schematic diagram of FIG. At this time, the base chassis 27 is supported only by the sub-chassis 29 through the dampers 28, and all the paths through which vibrations from the outside are transmitted go through the sub-chassis 29 with the dampers 28. Resistance to has been improved. Further, the base chassis 27 does not have an extra weight including the respective dampers 28, that is, the total weight as an object to which the shock is transmitted is light because there is no damper, so that further shock resistance is improved. The

  The disk drive device 1 may be fixed via a damper when the main chassis 6 is fixed to the bottom case 4. Specifically, as shown in FIG. 9, the main chassis 6 is provided with a damper 28 between each guide piece 6 f and the screw hole 4 c of the bottom case 4, and is fixed with a stepped screw.

  In the base unit 22 fixed in this way, as shown in the schematic diagram of FIG. 10, the sub chassis 29 is supported by the main chassis 6, and the main chassis 6 is fixed via the bottom case 4 and the damper 28. At this time, the base chassis 27 is supported only by the subchassis 29 via the dampers 28 a to 28 c, and the subchassis 29 is supported by the main chassis 6, and the main chassis 6 passes through the bottom case 4 and the damper 28. The path through which vibrations from the outside are transmitted passes through the main chassis 6 with the damper 28 and the subchassis 29 with the dampers 28a to 28c, and the damper is arranged in two stages. Therefore, the resistance to impact is further improved.

  Further, as shown in FIG. 9, a cushioning material 39 may be provided between the substantially intermediate portion of the side plate portion 6 b of the main chassis 6 and the bottom case 4. The shock absorber 39 is formed of an elastic member such as a thin rubber piece so that the side plate portion 6b and the bottom case 4 are in direct contact with each other according to the amplitude of vibration caused by the shock and cut off the path through which the shock is transmitted. The buffer material 39 has an adhesive layer formed on one surface, and this adhesive layer is attached to the side plate portion 6 b of the main chassis 6.

  Thereby, even when the clearance between the bottom case 4 and the main chassis 6 is narrowed and the main chassis 6 is connected to the bottom case 4 via the damper 28, the side plate portion 6b of the main chassis 6 can be 4 can be prevented from being transmitted to the main chassis 6 and the base chassis 27 through the contact portion.

  As shown in FIGS. 11 to 19, the disk drive apparatus 1 has the optical disk 2 mounted on the disk insertion / removal position where the optical disk 2 is inserted / removed from the disk insertion / removal port 19 and the turntable 23 a of the disk mounting unit 23. A disk transport mechanism 50 that transports the optical disk 2 to and from the disk mounting position is provided.

  The disk transport mechanism 50 is a surface parallel to the main surface of the optical disc 2 as a support member that is moved between the upper surface 6a of the main chassis 6 and the main surface of the top plate portion 5a facing the disk mounting portion 23. A loading arm 51 and an eject arm 52 that are swingable inside, a loading cam plate 53 that transmits a driving force from a drive mechanism 120 described later to the loading arm 51, and an eject arm 52 that is engaged with the eject arm 52. The first link arm 54 that rotates in the ejection direction of the optical disc 2, the second link arm 55 that is connected to the first link arm 54, and the first link arm 54 and the main chassis 6 are bridged. The tension coil spring 56 and the guide projection 113 of the second link arm 55 are engaged with each other so that the second link arm 5 and an operation arm 58 that is connected to the drive mechanism 120 to operate the first link arm 54 so that the eject arm 52 moves in the direction in which the optical disk 2 is inserted or ejected. ing.

  The disc transport mechanism 50 automatically pulls the optical disc 2 to the disc mounting portion 23 by the loading arm 51 when the eject arm 52 is rotated to a predetermined position by inserting the optical disc 2 from the disc insertion / removal port 19. The eject arm 52 is rotated to the front side of the housing 3 to eject the optical disk 2. Specifically, in the disk transport mechanism 50, the rotation support member 71 of the eject arm 52 is moved between the housing 3 and the eject arm 52 until the eject arm 52 is rotated to a predetermined position and the retracting operation is started after the optical disk 2 is inserted. The guide projection 113 formed on the distal end portion of the second link arm 55 is guided by the loop cam 57 so that the first link arm 54 of the rotation support member 71 is rotated. Movement of the first link arm 54 connected to the rotation support member 71 and the second link arm 55 is restricted by being moved in a direction different from the rotation direction of the engagement hole 80 with which the engagement is performed. Then, the tension coil spring 56 stretched between the first link arm 54 and the main chassis 6 is extended, and the eject arm 52 is moved in the discharging direction. While being urged is rotated in the insertion direction.

  Further, the disk transport mechanism 50 engages the first link arm 54 of the rotation support member 71 by the guide convex portion 113 of the second link arm 55 being guided by the loop cam 57 in the pull-in operation of the optical disk 2. By moving the engaging hole 80 in the same direction as the rotation direction, the extended tension coil spring 56 is contracted, and the urging force of the eject arm 52 in the discharging direction is reduced.

  Further, when the optical disc 2 is ejected, the disc transport mechanism 50 is configured such that when the guide convex portion 113 of the second link arm 55 is guided by the loop cam 57, the eject arm 52 is rotated in the ejecting direction of the optical disc 2. By moving in the same direction as the rotation direction of the engagement hole 80 with which the first link arm 54 of the rotation support member 71 is engaged, the eject arm 52 is rotated without the urging force of the tension coil spring 56 acting. Then, the optical disc 2 is ejected.

  As a result, in the insertion process in which the optical disk 2 is inserted to a predetermined position by the user, the tension coil spring 56 can be extended to exert a biasing force in the ejection direction, so that the insertion of the optical disk 2 by the user is stopped. Even in this case, it is possible to prevent the optical disk 2 from being left in a state where it is inserted in the housing 3 halfway. Further, in the process of retracting the optical disk 2 by the loading arm 51, the tension coil spring 56 contracts, so that the urging force acting on the eject arm 52 in the ejection direction can be eliminated, so that a smooth retracting operation is possible. Further, in the process of ejecting the optical disc, the tension coil spring 56 provided to the eject arm 52 is maintained by maintaining the state in which the first link arm 54 and the engaging portion of the main chassis 6 are close to each other and the tension coil spring 56 is contracted. Since the urging force in the ejecting direction due to is not exerted, the eject arm 52 is rotated according to the operation of the operation arm 58 that receives the driving force of the driving mechanism 120, and the optical disc 2 can be read without depending on the elastic force. The center hole 2a of the optical disc 2 can be stably discharged to a predetermined stop position where the center hole 2a is discharged out of the housing 3.

  Hereinafter, each component of the disk transport mechanism 50 will be described in detail.

  The loading arm 51 pulls the optical disk 2 onto the disk mounting portion 23, and the base end portion of the loading arm 51 is rotatable on the deck portion 4 a of the bottom case 4 to the disk insertion / removal opening 19 side of the disk mounting portion 23. It is supported and the front-end | tip part can be rotated in the arrow a1 direction and the arrow a2 direction in FIG. Specifically, as shown in FIGS. 20 and 21, the loading arm 51 includes an arm main body 51a made of a flat sheet metal, and an insertion hole 60 projects from one end of the arm main body 51a. In FIG. 21, the optical disk 2 is loaded on the deck portion 4a with the rotation support member 63 as a fulcrum by engaging the substantially cylindrical rotation support member 63 projecting from the deck portion 4a. It is supported so as to be rotatable in the direction of arrow a1 and in the direction of arrow a2 in FIG.

  The insertion hole 60 is formed in a long hole shape. Accordingly, the loading arm 51 is rotated in the directions of the arrows a1 and a2 in the drawing while moving along the insertion hole 60. As a result, as will be described in detail later, the loading arm 51 absorbs the deviation of the rotation timing that occurs between the loading arm 51 and the eject arm 52 in accordance with the stroke of the slider 122 in the insertion and withdrawal processes and the ejection process of the optical disk 2. Smooth insertion / ejection of the optical disk 2 can be performed.

  In addition, the loading arm 51 is provided with a contact portion 61 that protrudes upward from the tip of the arm main body 51a so as to be in contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19. A small diameter rotating roller 61a is rotatably attached to the contact portion 61. The contact portion 61 is made of a softer resin than the optical disc 2, and a central portion that comes into contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 19 is curved inward, and both end portions thereof are expanded in diameter. The flange portion has a substantially hourglass shape that restricts the movement of the optical disc 2 in the height direction.

  Further, the loading arm 51 is pressed against the leaf spring 62 from the side in the vicinity of the insertion hole 60, so that the urging force of the leaf spring 62 always keeps the optical disc 2 on the side of the disc insertion / removal opening 19 with the insertion hole 60 as a fulcrum. Is biased in the direction of arrow a1 in FIG. The leaf spring 62 that biases the loading arm 51 includes a base portion 62a that is fixed on the deck portion 4a, and an arm portion 62b that extends from one end of the base portion 62a and biases the loading arm 51.

  Further, the loading arm 51 is provided with an engaging convex portion 64 that is inserted and engaged with a first cam groove 66 of a loading cam plate 53 described later. The loading arm 51 is rotated while restricting the urging force of the leaf spring 62 by the engagement convex portion 64 moving along the first cam groove 66 of the loading cam plate 53.

  The loading cam plate 53 is made of a flat metal plate, and is engaged with a slider 122 of a drive mechanism 120 described later, so that the loading cam plate 53 is moved back and forth on the deck portion 4a as the slider 122 moves. A regulating arm 212 that regulates the urging force of the loading arm 51 and the deck arm 200 described later is rotated. The loading cam plate 53 is overlaid on the loading arm 51 and the restriction arm 212 that are rotatably supported on the deck portion 4 a, and the engaging convex part 64 of the loading arm 51 and the rotation guide of the restriction arm 212. When the portion 215 is inserted, the rotation of the loading arm 51 and the regulating arm 212 is regulated according to the insertion / ejection operation of the optical disc 2.

  As shown in FIGS. 22A and 22B, the loading cam plate 53 includes a first engaging projection 64 projecting from the loading arm 51 and a rotation guide portion 215 of the restricting arm 212. A cam groove 66, a second cam groove 67 through which the guide protrusion 65 protruding from the deck portion 4 a is inserted, a pair of engagement protrusions 68 and 68 that engage with the slider 122, and a restriction arm 212. A third cam groove 69 is formed on the deck portion 4a. The third cam groove 69 is inserted through a rotation support pin 217 that is rotatably supported.

  The first cam groove 66 regulates the rotation of the loading arm 51 urged in the loading direction of the optical disc 2 by the leaf spring 62 by sliding the engagement convex portion 64, and the rotation guide portion. By sliding 215, the regulating arm 212 is rotated to control the urging force of the coil spring 203 locked to the deck arm 200.

  As shown in FIGS. 11 and 21, the first cam groove 66 restricts the engaging convex portion 64 and causes the loading arm 51 to rotate in the direction of the arrow a1 in FIG. A guide portion 66a, a second guide portion 66b which is adjacent to the first guide portion 66a and is continuously formed, restricts the rotational position of the loading arm 51 and supports the optical disc 2 at the centering position, and a second guide portion 66b. 11 is formed continuously with the guide portion 66b and guides the engaging convex portion 64 so that the loading arm 51 rotates in the direction of the arrow a2 in FIG. 11 apart from the outer periphery of the optical disc 2 mounted on the disc mounting portion 23. The guide arm 66c is provided on the opposite side of the second guide portion 66b via the first guide portion 66a, and the restricting arm is guided by guiding the rotation guide portion 215. 12 consists of a fourth guide portion 66d for rotating the.

  The first guide portion 66 a is formed in a direction substantially perpendicular to the moving direction of the loading cam plate 53, and the engaging projection is formed by moving the loading cam plate 53 in the direction of the arrow f 1 on the back side in the housing 3. The loading arm 51 is rotated in the direction of arrow a1 in FIG. The second guide portion 66b is formed substantially parallel to the moving direction of the loading cam plate 53, and restricts the rotation of the loading arm 51 rotated in the direction of the arrow a1 that pulls the optical disc 2 by the first guide portion 66a. Then, the optical disk 2 is centered. The third guide portion 66c is bent toward the inner peripheral side of the housing 3 relative to the second guide portion 66b, and the loading arm 51 is mounted on the disc mounting portion 23 by guiding the engaging convex portion 64. The optical disk 2 can be rotated by being separated from the side surface of the optical disk 2. The fourth guide portion 66d guides the rotation guide portion 215 of the restriction arm 212, and rotates the restriction arm 212 in accordance with the sliding of the loading cam plate, thereby applying a biasing force by the deck arm 200 described later. Control.

  As shown in FIG. 11, the first cam groove 66 is separated from the first guide portion 66a and the engaging convex portion 64 in the state of waiting for the insertion of the optical disc 2, and the leaf spring 62 moves in the direction of the arrow a1. The engaging convex portion 64 of the loading arm 51 that is urged to rotate is in contact with the side surface facing the first guide portion 66a. As a result, the loading cam plate 53 positions the loading arm 51 in the waiting state for inserting the optical disk 2. When the optical disk 2 is inserted into the housing 3 and the loading cam plate 53 is moved to the back side of the housing 3 by the slider 122, the first cam groove 66 has the engagement convex portion 64 as shown in FIG. Is brought into contact with the first guide portion 66a to rotate the loading arm 51 in the direction of the arrow a1 in FIG.

  When the first cam groove 66 is conveyed until the center hole 2a of the optical disc 2 is positioned on the turntable 23a of the disc mounting portion 23, the engaging convex portion 64 is provided with the second guide as shown in FIG. Part 66b is entered. In the loading arm 51, the relative angle between the engaging convex portion 64 and the insertion hole 60 does not change in the second guide portion 66b, so the contact portion 61 is not rotated in the direction of the arrow a1, and the optical disc 2 is brought to the centering position. To support. Thereafter, when the chucking of the optical disk 2 is completed, the first cam groove 66 has the engaging convex part 64 guided by the third guide part 66c as shown in FIG. It is rotated in the direction of arrow a2 in FIG.

  Further, the first cam groove 66 swings when the loading cam plate 53 is moved to the back side of the housing 3 and the rotation guide portion 215 of the restriction arm 212 is guided by the fourth guide portion 66d. Then, the biasing force increases as the optical disk 2 is inserted into the housing 3 by moving the spring latching portion 214 that latches the other end 203b of the coil spring 203 that pivots and biases the deck arm 200. Prevent it from going.

  When the optical disk 2 is ejected, when the loading cam plate 53 is moved in the same direction as the slider 122 is moved in the direction of the arrow f2 on the front side, as shown in FIG. The third guide portion 66c moves to the second guide portion 66b. As a result, the loading arm 51 is rotated in the direction of the arrow a1 in FIG. 17 which is the loading direction of the optical disc 2, and the contact portion 61 comes into contact with the side surface of the optical disc 2 from the front side.

  Further, when the loading cam plate 53 is moved in the direction of the arrow f2 and the engaging convex portion 64 is moved from the second guide portion 66b to the first guide portion 66a, as shown in FIG. As one guide portion 66a is moved in the arrow f2 direction, the contact portion 61 is rotatable in the arrow a2 direction. Further, the eject arm 52 is rotated in the direction of the arrow b <b> 2 for ejecting the optical disk 2 by receiving the driving force of the driving mechanism 120. Therefore, the loading arm 51 is rotated in the direction of the arrow a2 by being pressed by the optical disc 2 conveyed in the ejection direction.

  At this time, the loading arm 51 is rotated while being urged by the leaf spring 62 in the direction of the arrow a1 which is the insertion direction of the optical disc 2. As a result, when the optical disk 2 is ejected, the disk transport mechanism 50 pushes the optical disk 2 to the predetermined ejection position while sandwiching the optical disk 2 by the loading arm 51 and the eject arm 52, and the loading arm 51 suddenly moves the optical disk 2. Jumping out can be prevented.

  When the ejection of the optical disk 2 is completed, the loading arm 51 has a side surface in which the engaging convex portion 64 faces the first guide portion 66a of the first cam groove 66 of the loading cam plate 53 as shown in FIG. , The rotation in the direction of the arrow a1 is restricted, and the optical disk 2 is waited for insertion.

  The second cam groove 67 guides the movement of the loading cam plate 53 by being inserted into a guide convex portion 65 protruding from the deck portion 4a. The second cam groove 67 is a linear cam groove parallel to the moving direction of the slider 122, and the guide convex portion 65 slides with the movement of the slider 122, so that the loading cam plate 53 is moved to the slider 122. Guide in the direction of movement.

  A pair of engaging protrusions 68, 68 that engage with the slider 122 are formed on one side of the loading cam plate 53 so as to be separated from each other. The engaging protrusions 68 and 68 project downward and project toward the bottom surface side of the bottom case 4, thereby engaging the slider 122 disposed along the side surface of the bottom case 4. Engaged with the mating recesses 127 and 127. As a result, the loading cam plate 53 and the slider 122 are integrated, and the loading cam plate 53 is slid as the slider 122 moves.

  The loading cam plate 53 is slidable within a clearance provided between the right guide wall 118 and the deck portion 4a on the other side opposite to the one side where the engagement protrusions 68 and 68 are formed. By being inserted, the floating from the deck portion 4a is prevented.

  The third cam groove 69 is inserted on a rotation support pin 217 that stands on the deck portion 4a and supports the restriction arm 212 to the deck portion 4a so as to be rotatable. Similarly to the second cam groove 67, the third cam groove 69 is a linear cam groove parallel to the moving direction of the slider 122, and is slid to the rotation support pin 217 as the slider 122 moves. Thus, the loading cam plate 53 is guided in the moving direction of the slider 122.

  An eject arm 52 for discharging the optical disk 2 from the disk mounting portion 23 to the outside of the disk insertion / removal port 19 is a side surface opposite to the side surface on which the loading arm 51 is formed, and is closer to the back side of the housing 3 than the disk mounting portion 23. It is arranged. The eject arm 52 transports the optical disc 2 toward the disc mounting portion 23 while being operated by first and second link arms 54 and 55 and an operation arm 58, which will be described later. It is rotated in the direction of arrow b2 in FIG. As shown in FIGS. 23 and 24, the eject arm 52 includes a rotation support member 71 rotatably supported by the main chassis 6, and an extrusion that is rotatably engaged with the rotation support member 71 to push out the optical disc 2. The arm 72 and a coil spring 73 that urges the push arm 72 in the ejection direction of the optical disc 2 are provided.

  The rotation support member 71 is made of a substantially circular sheet metal, and is rotatably attached to the upper surface 6a of the main chassis 6 from the opposite side of the upper surface 6a to the disk transport area. An attachment port 71b with the main chassis 6 is formed in the approximate center of the main surface 71a of the rotation support member 71. A spacer 75 is disposed between the rotation support member 71 and the main chassis 6, and the rotation support member 71 is rotatably attached to the main chassis 6 via the spacer 75.

  Further, the rotation support member 71 is formed with an engagement piece 76 with which the push arm 72 and the coil spring 73 are engaged. The engagement piece 76 is bent from the tip of the standing wall 76a that is erected from the main surface 71a, so that it is provided above the main surface 71a, and the upper surface 6a from the ejection arm opening 6d of the main chassis 6 is provided. Projected to the side. The engaging piece 76 is pushed out by contacting the side surface of the pushing arm 72 with an opening 77 that is continuous with the engaging convex portion 85 of the pushing arm 72 and is swiveled together by a caulking shaft 89. A pair of rotation restricting walls 78 and 78 for restricting the rotation region of the arm 72 and a locking recess 79 for locking one arm 73b of the coil spring 73 are formed. The rotation restricting walls 78 and 78 are formed so as to rise from both the left and right sides of the engaging piece 76, and a restricting projection 87 formed on the pusher arm 72 is disposed therebetween to restrict the turning region of the pusher arm 72. To do.

  Further, the rotation support member 71 has an engagement hole 80 in which a first link arm 54 described later is rotatably engaged with the main surface 71a. The engagement hole 80 communicates with an insertion hole formed at one end 54 a of the first link arm 54, and is rotatably connected to the first link arm 54 by a screw 74.

  Further, the rotation support member 71 has a bent piece 81 formed from one side surface of the main surface 71a. The bent piece 81 is bent downward from the main surface 71a, so that the bent piece 81 abuts against a sub-slider 151 of the base lifting mechanism 150, which will be described later, and the optical disc 2 is inserted into the disc by inserting the optical disc 2. When turned in the direction of the arrow b1 in FIG. 11 conveyed to the mounting portion 23 side, the switch of the first switch SW1 mounted on the circuit board 59 is pressed. As a result, the disk drive device 1 can detect that the eject arm 52 pressed against the optical disk 2 has been rotated to the back side of the housing 3, and can detect the timing for driving the drive mechanism 120.

  Further, the rotation support member 71 is provided with a turning piece 82 for turning a centering guide 220 (to be described later) away from the side surface of the optical disc 2 conveyed to the disc mounting portion 23. When the optical disc 2 is transported to a centering position where the optical disc 2 can be mounted on the disc mounting portion 23, the rotation support member 71 is rotated to contact the cam shaft 233 of the centering guide 220 and the centering guide. 220 is rotated so as to be separated from the optical disc 2 so that the optical disc 2 is rotatable.

  The push-out arm 72 that is rotatably engaged with the engagement piece 76 is a resin molded member formed in a substantially triangular shape, and an engagement convex portion into which the opening 77 of the engagement piece 76 is inserted and engaged. 85, a locking wall 86 that locks the other arm 73 c of the coil spring 73, and a support portion 88 that supports the side surface on the insertion end side of the optical disc 2. The engagement convex portion 85 is a hollow cylindrical body formed at the top of a substantially triangular shape, and the hollow portion communicates with an opening 77 formed in the engagement piece 76 of the rotation support member 71. The coil spring 73 is inserted into the cylindrical portion 73 a and is co-caulked to the engaging piece 76 by the caulking shaft 89. As a result, the push arm 72 is rotatable on the engaging piece 76 with the engaging convex portion 85 as a fulcrum.

  The coil spring 73 engaged with the engaging piece 76 together with the pushing arm 72 by the caulking shaft 89 has a cylindrical portion 73 a inserted through the engaging convex portion 85 and one arm 73 b formed on the engaging piece 76. The other arm 73c is locked to the recess 79, and the other arm 73c is locked to the locking wall 86 formed on the pusher arm 72. It is urged to rotate in the ejecting direction of the optical disc 2 with the convex portion 85 as a fulcrum.

  Further, the pushing arm 72 is formed with a restricting protrusion 87 in the vicinity of the engaging convex portion 85 for determining a rotation region on the engaging piece 76. The restricting protrusion 87 is positioned between the rotation restricting walls 78 and 78 provided upright on the engaging piece 76, and the push arm 72 is turned on the engaging piece 76, whereby the restricting protrusion 87 is interposed between the turning restricting walls 78. Will be reciprocated. Accordingly, the pushing arm 72 is restricted from turning when the restricting protrusion 87 is brought into contact with any one of the turning restricting walls 78, so that the turning region on the engaging piece 76 is determined. .

  Such an extrusion arm 72 is rotatably engaged with the rotation support member 71 and is urged to rotate toward the disc insertion / removal port 19 by a coil spring 73 with a predetermined spring force. Therefore, the eject arm 52 is rotationally operated in the direction of arrow b2 in FIG. 25 to eject the optical disk 2 out of the housing 3 by the first link arm 54 and the operation arm 58 that receive the driving force of the driving mechanism 120 described later. At this time, even when an obstacle is present on the conveyance area of the optical disk 2 and a force in the direction of the arrow b1 is applied, the push arm 72 that receives the force in the direction opposite to the ejection direction of the optical disk 2 is moved by the coil spring 73. The rotation support member 71 is rotated in the direction of the arrow b1 with the opening 77 of the rotation support member 71 as a fulcrum against the urging force. This avoids a situation in which the driving force that rotates the eject arm 52 in the direction of the arrow b2 and the force that operates in the direction opposite to the driving force face each other. Therefore, the optical disk 2 can be used without applying an excessive load to the motor or the like of the drive mechanism 120 that drives the first link arm 54 and the operation arm 58 so as to rotate the eject arm 52 in the direction of the arrow b2 in FIG. It is possible to prevent breakage by being pinched by the urging force in the ejection direction by the eject arm 52 and the force acting in the opposite direction.

  Further, as shown in FIGS. 23 and 24, the push-out arm 72 is provided with a pickup portion 90 that prevents the optical disc 2 from sinking to the bottom case 4 side, as shown in FIGS. The pickup unit 90 includes a pickup arm 91 that supports the optical disk 2 from below, and a pressing member 92 that presses the pickup arm 91 so that the optical disk 2 can be caught.

  The pickup arm 91 includes a rod-shaped shaft portion 91a, a support piece 91b provided on one end side of the shaft portion 91a and supporting the optical disc 2, and an optical disc 2 standing in the vicinity of the support piece 91b and inserted into the housing 3. The abutting piece 91c with which the outer peripheral surface is abutted, and the upper end 6a of the main chassis 6 is slid along the rotation of the eject arm 52 provided at the other end of the shaft portion 91a, and the support piece 91b rises on the shaft portion 91a. And a sliding piece 91d that rotates in the direction.

  The shaft portion 91a is formed in a substantially columnar shape, and a support piece 91b and an abutting piece 91c project from one end side, and a sliding piece 91d projects from the other end side. The shaft portion 91a is rotatably supported by a bearing portion 94 formed on the push-out arm 72. The support piece 91b supports the outer peripheral portion on the insertion end side of the optical disc 2 inserted with an inclination toward the bottom case 4 side, thereby preventing a collision with the optical pickup 25 and the like and returning it to a regular transport region. Yes, it is formed in a substantially rectangular plate shape, is thinned toward the front end side in the longitudinal direction, and is provided with an inclined surface. When the abutting piece 91 c is abutted against the outer peripheral surface of the optical disc 2, the rotation of the shaft portion 91 a is restricted by being supported by the support wall 99 erected on the push-out arm 72. Further, the abutting piece 91c is erected in a direction substantially orthogonal to the extending direction of the support piece 91b from the shaft portion 91a, and when the support piece 91b is supported by the support wall 99, the support piece 91b becomes a normal one of the optical disc 2. It is rotated on the transfer area. The sliding piece 91d protrudes from the shaft portion 91a so as to face the lower surface side of the pushing arm 72 from the opening 95 bored in the pushing arm 72. Then, the sliding piece 91 d slides on the upper surface of the main chassis 6 to rotate and hold the support piece 91 b to the regular transport area of the optical disc 2.

  Further, pressed portions 93 and 93 that are pressed by the pressing member 92 are formed on the shaft portion 91a. The pressed portions 93 and 93 are flattened by providing the shaft portion 91a with a substantially D-shaped cross section, and are pressed by a pressing member 92 formed in a flat plate shape. The pressing member 92 that presses the pressed portions 93, 93 is a leaf spring member formed in a substantially U shape, and is attached to the pushing arm 72 so that the support piece 91 b of the pickup arm 91 is always downward. The shaft portion 91a is urged to rotate so as to be inclined. At this time, the pressing member 92 presses the flat portions of the pressed portions 93 and 93 having a substantially D-shaped cross section, so that the pickup arm 91 is securely rotated so that the support piece 91b faces downward. Can be energized. Further, as a result, the sliding piece 91 d of the pickup arm 91 protrudes from the opening 95 formed in the pushing arm 72 to the lower surface side of the pushing arm 72, and the pushing arm 72 is rotated to the back side of the housing 3. It can be brought into contact with the edge portion 17 of the main chassis 6.

  In the state where the pickup arm 91 is waiting for the insertion of the optical disc 2, the ejecting arm 52 is rotated to the front side of the housing 3, so that the sliding piece 91 d is the edge portion 17 of the main chassis 6. The support piece 91b is inclined downward by being separated from each other and the shaft portion 91a is urged by the pressing member 92. When the optical disc 2 is inserted, the outer peripheral surface of the optical disc is abutted against the abutting piece 91c, whereby the shaft portion 91a is rotated against the urging force of the pressing member 92, and the support piece 91b is the top cover. Raised to the 5th side. As a result, the pickup arm 91 is rotated to the rear side of the housing 3 while supporting the lower surface side of the optical disc 2 by the support piece 91b. Thereafter, when the push-out arm 72 rotates on the upper surface of the main chassis 6, the pick-up arm 91 has a sliding piece 91 d that faces the lower side of the push-out arm 72 through the opening 95 on the upper surface 6 a from the edge portion 17 of the main chassis 6. Is held in a state where the support piece 91b is raised to the top cover 5 side. Accordingly, even when the push arm 72 is separated from the optical disk 2 after the optical disk 2 is transported to the disk mounting portion 23, the support piece 91 b is rotated to the bottom case 4 side by the biasing force of the pressing member 92, and the main chassis 6. There is no sliding on the upper surface of the.

  Further, when the insertion end of the optical disc 2 is inclined and inserted toward the bottom case 4, the outer periphery on the insertion end side of the optical disc 2 is placed on the support piece 91 b that is rotated toward the bottom case 4 in the insertion standby state. Since the surface is supported, it is possible to prevent the optical disk 2 from colliding with other components such as the turntable 23a and the optical pickup 25 disposed on the bottom case 4 side.

  When the optical disk 2 is inserted in an inclined state, the eject arm 52 and the pushing arm 72 are rotated in the direction of the arrow b1, so that the slide arm 91d of the pickup arm 91 is the edge portion 17 of the main chassis 6. The shaft portion 91a is rotated against the urging force of the pressing member 92 and the support piece 91b is rotated to the top cover 5 side. Note that the rotation region of the support piece 91 b is restricted by the abutting piece 91 c provided on the shaft portion 91 a being supported by the support wall 99 provided upright on the push-out arm 72. Further, by rotating the support piece 91b, the outer peripheral portion of the optical disc 2 is abutted against the abutting piece 91c. As a result, the pickup arm 91 can return the optical disc 2 inserted with an inclination toward the bottom case 4 side to the regular transport area.

  In the push-out arm 72, a holding piece 88 is provided in the vicinity of the support piece 91b of the pickup arm 91 so as to hold the outer peripheral portion of the optical disc 2 together with the support piece 91b. The holding piece 88 extends in the same direction as the support piece 91b from the end of the standing wall provided upright from the main surface of the push arm 72. The pushing arm 72 receives the side surface on the insertion end side of the optical disc 2 by the standing wall of the abutting piece 91c and the sandwiching piece 88, and sandwiches the insertion end side of the optical disc 2 by the sandwiching piece 88 and the support piece 91b. The optical disk 2 is rotated to the back side of the housing 3 when retracted, and pushed out to the front side of the housing 3 when ejected.

  The distance between the holding piece 88 and the support piece 91b rotated to the regular transport area is formed slightly larger than the thickness of the optical disc 2, and does not firmly hold the optical disc 2. Therefore, the eject arm 52 prevents the optical disc 2 from being tilted by the sandwiching piece 88 and the support piece 91b as it rotates in the directions of the arrows b1 and b2, and smoothly releases the optical disc 2 and holds it when ejected. Can do.

  Moreover, you may form the extrusion arm concerning the eject arm 52, and a pick-up part as follows.

  As shown in FIGS. 26 and 27, the second push arm 240 has an opening formed in the engagement piece 76 of the rotation support member 71 in the same manner as the push arm 72 attached to the eject arm 52. It is rotatably attached to the portion 77 and is urged to rotate by a coil spring 73 in the direction of the arrow b2 in FIG. The second extrusion arm 240 is a resin molded member formed in a substantially triangular shape, and a pickup support portion 241 provided with a second pickup portion 250 on the opposite side to the top portion supported by the engagement piece 76; A clamping piece 245 that clamps the side surface on the insertion end side of the optical disc 2 is formed together with the pickup arm 251 of the second pickup unit 250.

  The pickup support portion 241 includes a storage recess 242 that rotatably stores the pickup arm 251, and a locking portion 244 that locks the support plate 243 that supports the pickup arm 251 in the storage recess 242. The storage recess 242 is provided along one side of the second push-out arm 240 according to the rod-shaped pickup arm 251 and intermittently supports the upper portion of the pickup arm 251 along the longitudinal direction. In addition, the locking portion 244 locks the support plate 243 from the back side of the storage recess 242 to the pickup support portion 241 by locking a plurality of locking pieces 243 b formed on the support plate 243.

  The support plate 243 is engaged with the pickup support portion 241 from the back surface side of the second push-out arm 240, thereby rotatably supporting the pickup arm 251 on the pickup support portion 241. As shown in FIG. 28, the support plate 243 is engaged with a storage portion 243a for forming a metal plate in a substantially concave shape and storing the pickup arm 251 and a plurality of locking portions 244 provided on the pickup support portion 241. A plurality of locking pieces 243b to be stopped are provided. The support plate 243 stores the pickup arm 251 in the storage portion 243a and the locking piece 243b is locked to the locking portion 244, thereby preventing the support plate 243 from falling off the pickup support portion 241. The support plate 243 is provided with a locking hole 243c for restricting the rotation range of the pickup arm 251. A locking projection 257 projecting from the pickup arm 251 is inserted into the locking hole 243c, and the locking surface 257a of the locking projection 257 is locked, whereby the support portion 254 of the pickup arm 251 is locked. The rotation range can be determined.

  The sandwiching piece 245 sandwiches the outer peripheral portion of the optical disc 2 together with the pickup arm 251 in the same manner as the sandwiching piece 88 of the push-out arm 72 described above, and stands upright from the main surface of the second push-out arm 240. It is formed so as to protrude from the tip in the same direction as the support portion 254 of the pickup arm 251.

  As shown in FIGS. 26 and 27, the second pickup unit 250 includes a pickup arm 251 and a coil spring 252 that urges the pickup arm 251 to rotate. The pickup arm 251 supports the outer peripheral portion of the optical disk 2 inserted obliquely, prevents collision with the optical pickup 25 and the like, and guides it to a regular transport area. FIGS. ), A columnar arm main body 253, a support portion 254 formed at the tip of the arm main body 253 and supporting the outer peripheral portion of the optical disc 2, and an upper surface 6a of the main chassis 6 formed at the rear end of the arm main body 253. , A sliding portion 255 that rotates the arm body 253, a spring locking portion 256 that protrudes from the outer periphery of the arm main body 253, and engages one end of the coil spring 252, and protrudes from the outer periphery of the arm main body 253. And a locking projection 257 inserted through the locking hole 243c of the support plate 243.

  The arm body 253 is housed in a housing recess 242 provided in the second push-out arm 240 and is rotatably held by a housing portion 243a of the support plate 243. On the outer periphery of the arm main body 253, a spring locking portion 256 and a locking protrusion 257 are projected.

  The support portion 254 formed at the distal end of the arm body 253 is formed in a flat plate shape as a whole, and is formed in an acute angle toward the distal end in a side view as shown in FIG. The support unit 254 is supported with the main surface 254 a standing in a substantially orthogonal direction with respect to the main surface of the optical disc 2 in a state of waiting for the optical disc 2 to be inserted. At this time, the support portion 254 can support the side surface on the insertion end side of the optical disc 2 when the main surface 254a is inclined toward the bottom case 4 and the optical disc 2 is inclined toward the bottom case 4.

  The sliding portion 255 formed at the rear end of the arm main body 253 is configured such that a standing wall having a curved surface is erected from the arm main body 253. As shown in FIG. 29 (c), the sliding portion 255 has a curved surface 255a on the side surface in contact with the edge portion 17 of the main chassis 6 when the eject arm 52 is rotated in the arrow b1 direction. When the eject arm 52 is rotated in the direction of the arrow b1, the arm body 253 and the support portion 254 are rotated by coming into contact with the edge portion 17 of the main chassis 6. When the sliding portion 255 comes into contact with the main chassis 6 and the arm main body 253 rotates, the main surface 254a of the support portion 254 that has been rotated in a direction substantially orthogonal to the main surface of the optical disc 2 is the main surface of the optical disc 2. And almost parallel.

  The coil spring 252 that urges the pickup arm 251 to rotate is inserted into the winding portion by the arm main body 253, one end is locked to the main surface portion of the second push-out arm 240, and the other end is the arm of the pickup arm 251. It is latched by a spring latching portion 256 provided on the main body 253. One end of the coil spring 252 is locked to the push-out arm 240 and the other end is locked to the spring locking portion 256 of the pickup arm 251 to urge the pickup arm 251 to rotate.

  The pick-up arm 251 has an arm main body 253 housed in the housing recess 242 of the second push-out arm 240 and a catching projection in the catch hole 243c of the support plate 243 attached from the back side of the second push-out arm 240. By inserting the portion 257, the pickup support portion 241 of the second push-out arm 240 is supported. At this time, in the pickup arm 251, the main surface 254 a of the support portion 254 is substantially orthogonal to the main surface of the optical disc 2 by the spring locking portion 256 biased by the coil spring 252 being brought into contact with the main surface of the support plate 243. Is held upright. As shown in FIG. 30, the support unit 254 waits for insertion of the optical disc 2 in a state where the main surface 254a is inclined toward the bottom case 4 side.

  Then, when the optical disk 2 is inserted into the housing 3, the second push arm 240 is rotated in the direction of the arrow b1 with the side surface on the insertion end side of the optical disk 2 abutting against the standing wall provided with the clamping piece 245. To go. At this time, as shown in FIG. 31, when the tip of the optical disc 2 is inserted while being inclined toward the bottom case 4, the tip of the optical disc 2 is supported by the support portion 254. Therefore, even when the optical disc 2 is inserted while being inclined toward the bottom case 4, the outer peripheral portion of the optical disc 2 collides with the turntable 23 a of the base unit 22 disposed on the bottom case 4, the optical pickup 25, or the like. Can be prevented. The optical disc 2 is guided by the main surface 254a of the support portion 254, so that the outer peripheral portion on the insertion end side is moved to the regular transport region.

  When the eject arm 52 is rotated in the direction of the arrow b1 while the optical disc 2 is supported by the support portion 254, the pickup arm 251 has the curved surface 255a of the sliding portion 255 in contact with the edge portion 17 of the main chassis 6. As a result, the arm body 253 is rotated against the urging force of the coil spring 252. As a result, as shown in FIG. 32, the support portion 254 is rotated from a state where the main surface stands in a direction substantially orthogonal to the main surface of the optical disc 2 to a state substantially parallel to the main surface of the optical disc 2, and is inserted at an angle. The optical disc 2 is guided to the regular transport area and the optical disc 2 is held together with the holding pieces 245 erected on the second push-out arm 240.

  When the eject arm 52 is further rotated in the direction of the arrow b1 in the drawing process of the optical disk 2, the pick-up arm 251 slides the sliding portion 255 on the upper surface 6a of the main chassis 6. It is moved while maintaining a state substantially parallel to the main surface. Accordingly, the pickup arm 251 is rotated to the back side of the housing 3 when inserted and retracted while sandwiching the optical disc 2 together with the sandwiching piece 245, and pushes the optical disc 2 to the front side of the housing 3 when ejected.

  The distance between the sandwiching piece 245 and the support portion 254 rotated to the regular transport area is formed slightly larger than the thickness of the optical disc 2 and does not firmly hold the optical disc 2. Accordingly, the eject arm 52 prevents the optical disc 2 from being tilted by the clamping piece 245 and the support portion 254 as it rotates in the directions of the arrows b1 and b2, and smoothly releases the optical disc 2 and holds it when ejected. Can do.

  Next, the first link arm 54 that is rotatably engaged with the rotation support member 71 of the eject arm 52 will be described. The first link arm 54 rotates the eject arm 52 in an arrow b1 direction or an arrow b2 direction in FIG. 11 which is an insertion direction or an ejection direction of the optical disc 2 when operated by an operation arm 58 described later. . The first link arm 54 is made of a metal plate formed in a substantially rectangular shape, and one end 54a in the longitudinal direction is rotatably engaged with the engagement hole 80 of the rotation support member 71, and the other end in the longitudinal direction. 54b is rotatably engaged with the second link arm 55, and the other end is formed with a locking portion 96 to which one end of a tension coil spring 56 spanned between the main chassis 6 is locked. The other end 58b of the operation arm 58 is attached to a substantially middle portion in the longitudinal direction.

  The first link arm 54 may be engaged with the urging coil spring 97 between the loop cam 57 and the first link arm 54. The biasing coil spring 97 is provided in the case where the power of the slider 122 is not sufficiently transmitted as the rotational force to the rotation support member 71 of the eject arm 52 through the first link arm 54 in the ejecting process of the optical disc 2. Yes, the eject arm 52 is rotated to the ejection position of the optical disk 2.

  One end of the urging coil spring 97 is locked to the loop cam plate 111 of the loop cam 57, and the other end is attached to a substantially middle portion of the first link arm 54. Thereby, the biasing coil spring 97 rotationally biases the rotation support member 71 in the direction of the arrow b2 in FIG. 19 via the first link arm 54 in the ejecting process of the optical disc 2. Therefore, the eject arm 52 can transport the optical disc 2 to a predetermined ejection position. In the present disk transport mechanism 50, the urging coil spring 97 is not essential and is used preliminarily. The disk transport mechanism 50 normally transports the optical disk 2 to a predetermined discharge position by rotating the eject arm 52 in the direction of the arrow b2 according to the sliding operation of the slider 122 instead of the biasing force of the biasing coil spring 97. It is.

  A tension coil spring 56 that is locked to a locking portion 96 formed at the tip of the first link arm 54 moves the eject arm 52 through the first link arm 54 in the direction in which the optical disk 2 is ejected. By urging and urging in the b2 direction, an urging force in the ejection direction is applied to the eject arm 52 when the optical disk 2 is inserted. That is, when the eject arm 52 is rotated in the direction of arrow b1 by inserting the optical disc 2, the first link arm 54 connected to the rotation support member 71 also has one end 54a similarly in the direction of arrow b1. Is rotated. At this time, the tension coil spring 56 locked to the locking portion 96 of the first link arm 54 is engaged with the other end locked to the locking portion 98 of the main chassis 6 and the first link arm 54. One end locked to the stopper 96 is separated and extended. Therefore, in the eject arm 52, the one end 54a of the first link arm 54 and the rotation support member 71 engaged with the first link arm 54 are rotated in the direction of the arrow b1 by the urging force of the tension coil spring 56. Therefore, a biasing force in the direction of the arrow b2 that is the ejection direction of the optical disc 2 is applied with a predetermined force.

  As a result, when the user inserts the optical disc 2, the disc drive apparatus 1 can cause the eject arm 52 to insert the optical disc 2 while applying an urging force in the direction of the arrow b2 opposite to the insertion direction. Therefore, even if the user interrupts the insertion of the optical disc 2 in the middle, the optical disc 2 can be pushed back to the ejection position, and a situation where it is left at a halfway position in the housing 3 can be prevented.

  When the optical disk 2 is inserted into the housing 3 to some extent, a driving mechanism 120 described later is driven, and the optical disk 2 is retracted by the loading arm 51 and an operation that receives the driving force of the driving motor 121 is performed. Since the first link arm 54 is moved by the arm 58, the urging force in the direction of the arrow b2 by the tension coil spring 56 does not act on the eject arm 52. Further, when the optical disk 2 is ejected, the first link arm 54 is guided so that the latching portion 96 and the latching portion 98 of the main chassis 6 are not separated from each other. The urging force does not act on the eject arm 52 and the optical disc 2.

  As shown in FIG. 33, the locking portion 98 of the main chassis 6 to which the tension coil spring 56 is locked between the locking portion 96 of the first link arm 54 has a plurality of locking holes 98a. Yes. The tension coil spring 56 can change the extension length when the optical disk 2 is inserted by changing the locking hole 98a, thereby making the biasing force in the ejection direction variable. In addition, a plurality of locking holes can be formed in the locking portion 96 formed in the first link arm 54. Furthermore, a plurality of locking holes can be formed in both the locking portion 96 and the locking portion 98.

  In this way, by providing a plurality of locking holes in the first link arm 54 and / or the locking portions 96, 98 of the main chassis 6, the extension length of the tension coil spring 56 can be adjusted, and a plurality of tension coil springs 56 having different strengths can be adjusted. Without preparing the above, it is possible to make a desired discharge force act by simply changing the locking position in the locking hole. The urging force of the ejecting coil 52 in the ejecting direction of the eject arm 52 by the tension coil spring 56 can be changed by preparing a plurality of tension coil springs having different strengths. However, it is necessary to prepare a plurality of types of tension coil springs, and the number of parts increases. And parts management by the service department become complicated. Therefore, by forming a plurality of locking holes in the first link arm 54 and the locking portions 96, 98 of the main chassis 6, it is possible to eliminate the burden of using such multiple types of tension coil springs.

  The second link arm 55, which is rotatably engaged with the other end 54b of the first link arm 54, is made of a long sheet metal, and is guided by a guide groove 114 of the loop cam 57 at one end 55a. 113 is provided so that the other end 55b is rotatably engaged with the other end 54b of the first link arm 54. The second link arm 55 controls the distance between the locking portion 96 of the first link arm 54 and the locking portion 98 of the main chassis 6 by the guide convex portion 113 being guided by the loop cam 57.

  Further, the second link arm 55 is formed with an engaging projection 116 that is engaged with a cam groove 108 formed in an operation arm 58 described later. The disc transport mechanism 50 can rotate the eject arm 52 in response to the movement of the slider 122 by engaging the engaging projection 116 of the second link arm 55 with the cam groove 108. 2 can be stably discharged to a predetermined discharge position.

  That is, when a load is applied when the panel curtain provided at the disk insertion / removal opening 19 of the front panel 18 is in sliding contact with the optical disk 2 while the optical disk 2 is being ejected, the rotation support member 71 of the eject arm 52 and the first link arm 54 is urged in the direction of the arrow b1. Here, if the second link arm 55 and the operation arm 58 are not engaged by the engagement protrusion 116, the first link arm 54 allows the operation arm 58 to slide in the direction of the arrow f <b> 2 of the slider 122. As a result, even if it is moved in the direction of the arrow d2, the eject arm 52 cannot be rotated in the direction of the arrow b2 only by rotating in the direction of the arrow d2 with the engagement hole 80 as a fulcrum with respect to the rotation support member 71. Further, the second link arm 55 only rotates relative to the first link arm 54.

  On the other hand, when the second link arm 55 is engaged with the operation arm 58 by the engagement protrusion 116, the engagement protrusion 116 is formed on the side wall of the cam groove 108 as the operation arm 58 moves in the direction of the arrow d <b> 2. Due to the contact, the second link arm 55 cannot freely rotate with respect to the first link arm 54. In other words, the rotation of the first link arm 54 in the direction of the arrow d2 is restricted by the engagement protrusion 116 of the second link arm 55 coming into contact with the side wall of the cam groove 108. Accordingly, even when the eject arm 52 is urged in the direction of the arrow b1 while the optical disk 2 is being ejected, if the operating arm 58 is moved in the direction of the arrow d2, the first link arm 54 is moved in the direction of the arrow b1. The eject arm 52 is moved in the direction of the arrow d2 while being opposed to the urging force, and the eject arm 52 is rotated in the direction of the arrow b2. As a result, the eject arm 52 can be rotated in the direction of the arrow b2 in accordance with the amount of sliding of the slider 122 in the direction of the arrow f2, and the optical disc 2 can be reliably ejected to a predetermined ejection position.

  The second link arm 55 has a locking hole 115 formed at the end engaged with the first link arm 54, and the torsion coil spring 119 is locked. The torsion coil spring 119 has one end locked to the first link arm 54 and the other end locked to the locking hole 115 of the second link arm 55, whereby the first link arm 54 and the second link arm 54 are locked. In the direction in which the angle formed with the link arm 55 increases, that is, in the direction of the arrows g1 and g2 in FIG. 33, which is the direction in which the first link arm 54 and the second link arm 55 open, it is biased. As a result, the second link arm 55 can get over the protrusion 112e provided on the loop cam 57, which will be described later, by the guide protrusion 113, and can be guided from the retracting guide wall 112b to the discharge guide wall 112c.

  The loop cam 57 that guides the movement of the guide projection 113 of the second link arm 55 causes the eject arm 52 to generate a biasing force in the ejecting direction when the optical disc 2 is inserted. An insertion guide portion that guides the first and second link arms 54 and 55 so as not to generate an urging force in the ejection direction on the eject arm 52 when the optical disk 2 is retracted and ejected; As shown in FIG. 34, it has a discharge guide portion, and is formed in a substantially plate-like loop cam plate 111. The loop cam plate 111 is connected to the main chassis 6 as shown in FIG. Is attached to the bottom case 4 side surface of the upper surface 6a. A substantially annular cam wall 112 is erected on the loop cam plate 111 toward the bottom case 4 side. The cam wall 112 is one in which the guide convex portion 113 of the second link arm 55 makes one round in the operation of pulling in and discharging from the insertion of the optical disc 2, and the guide convex portion 113 slides when the optical disc 2 is inserted. The guide wall 112a, the retracting guide wall 112b on which the guide convex portion 113 slides when the optical disc 2 is retracted, and the discharge guide wall 112c on which the guide convex portion 113 slides when the optical disc 2 is ejected are continuously annularly formed. By surrounding these with an outer peripheral portion 112d, an annular guide groove 114 in which the guide convex portion 113 moves is formed. The loop cam 57 is formed with a protrusion 112e that prevents the guide protrusion 113 from going backward between the retracting guide wall 112b and the discharge guide wall 112c.

  As shown in FIG. 11, the insertion guide wall 112a is formed from the right guide wall 118 side to the left guide wall 117 side, while the insertion guide wall 112a is formed from the right guide wall 118 side to the left guide wall 117 side. The discharge guide wall 112c is formed from the left guide wall 117 side toward the right guide wall 118 side toward the back surface of the housing 3.

  The operation arm 58 that is connected to the first link arm 54 and the drive mechanism 120 and operates the eject arm 52 is made of a long metal plate, and one end 58a in the longitudinal direction is connected to the slider 122 of the drive mechanism 120. The third link arm 100 is rotatably engaged, and the other end 58b is rotatably engaged with the first link arm 54. Further, the operation arm 58 is formed with a cam groove 108 through which the engaging projection 116 formed on the second link arm 55 is inserted at the center in the longitudinal direction.

  As described above, the cam groove 108 is engaged with the engaging protrusion 116 of the second link arm 55 to rotate the eject arm 52 in accordance with the sliding operation of the slider 122. When the second link arm 55 circulates around the loop cam 57, the engagement projection 116 is formed in a long hole shape so as to be movable. The cam groove 108 is formed in a direction substantially perpendicular to the arrow d1 direction and the d2 direction in FIG. As a result, the operation arm 58 can restrict the rotation of the second link arm 55 by the engagement protrusion 116 coming into contact with the side wall of the cam groove 108, and the arrow d2 of the first link arm 54 can be controlled. Rotation in the direction can be restricted.

  When the slider 122 is slid, the operation arm 58 is moved in the directions of the arrows d1 and d2 in FIG. 11 which are substantially left and right via the third link arm 100, and the first link arm 54 is moved. And the eject arm 52 is rotated. Specifically, when the operation arm 58 is moved in the direction of the arrow d1 in FIG. 11 by the third link arm 100, the first link arm 54 is pressed in the same direction, thereby causing the eject arm 52 to move to the optical disk 2. It is rotated in the direction of arrow b1 in FIG. Further, when the operation arm 58 is moved in the direction of the arrow d2 in FIG. 11 by the third link arm 100, the first link arm 54 is moved in the same direction, whereby the eject arm 52 is moved in the ejection direction of the optical disc 2. 11 is turned in the direction of arrow b2 in FIG.

  The third link arm 100, which is rotatably engaged with one end 58a of the operation arm 58, is made of a substantially square metal plate, and the bent portion 100a is rotatably attached to the main chassis 6. In FIG. 11, while being supported rotatably in the directions of the arrows c1 and c2, the engaging convex portion 109 formed at one end 100b extending from the bent portion 100a is engaged with the slider 122, and the other end. 100 c is rotatably engaged with the operation arm 58. As a result, when the third link arm 100 receives the driving force of the driving motor 121 of the driving mechanism 120 and the slider 122 is conveyed in the direction of the arrow f1 in FIG. 11 is rotated in the direction of the arrow c1 in FIG. 11, and the operation arm 58 is moved in the direction of the arrow d1 in the figure. Further, when the slider 122 is conveyed in the direction of the arrow f2 in FIG. 11, the third link arm 100 is guided by the first guide groove 125 and rotated in the direction of the arrow c2 in FIG. It is moved in the direction of arrow d2 in the figure.

  The left and right guide walls 117 and 118 disposed on the left and right sides of the disc transport area guide insertion / ejection by sliding the side surface of the optical disc 2, such as a synthetic resin that is softer than the optical disc 2. Is formed by. The right guide wall 118 is disposed on the deck portion 4a, and the left guide wall 117 is disposed on the main chassis 6 and is fixed by screws, adhesive tape, or the like.

  The left and right guide walls 117 and 118 are provided with side walls 117a and 118a. These side walls 117a and 118a are provided at positions spaced apart from the side surface of the optical disc 2 conveyed to the centering position by a predetermined clearance, and do not contact the side surface portion of the optical disc 2 that is rotationally driven.

  Next, operations from insertion to ejection of the optical disk 2 by the disk transport mechanism 50 configured as described above will be described. The transport state of the optical disk 2 is monitored by detecting the pressed state of the first to fourth switches SW1 to SW4 mounted on the circuit board 59. As shown in FIG. 11, the first switch SW <b> 1 is disposed in the rotation region of the rotation support member 71 of the eject arm 52, and is bent on the rotation support member 71 as the eject arm 52 rotates. When pressed by the piece 81, H / L is switched. Further, as shown in FIG. 11, the second to fourth switches SW2 to SW4 are arranged on the moving region of the slider 122, and the slider 122 is sequentially slid in the direction of the arrow f1 or the arrow f2 to sequentially turn on H / L. Will be switched.

  Then, the disk drive device 1 detects the transport state of the optical disk 2 by monitoring the pressed state and the time of the first to fourth switches SW1 to SW4 with a microcomputer, and detects the drive state of the optical disk 2, the drive motor 121, the spindle motor 24a, the light A displacement driving mechanism 36 for moving the pickup 25 is driven.

  Before the optical disk 2 is inserted, as shown in FIG. 11, the slider 122 is slid in the direction of the arrow f2 in the figure, which is the disk insertion / removal port 19 side. The cam plate 53 is locked to a side surface facing the first guide portion 66 a formed in the first cam groove 66 of the cam plate 53, and the contact portion 61 is pivotally held at a position retracted from the transport area of the optical disk 2. Yes. Further, the third link arm 100 engaged with the slider 122 is rotated in the direction of the arrow c2 in FIG. 11, whereby the eject arm that is rotated by the operation arm 58 and the first link arm 54. 52 is rotated in the direction of arrow b2 in FIG. Further, by sliding the slider 122 in the f2 direction, the sub-slider 151 is slid in the direction of the arrow h2 in the figure, whereby the sub-chassis 29 constituting the base unit 22 is lowered to the bottom case 4 side, and the optical disc 2 is retracted from the transfer area.

  When the optical disk 2 is inserted by the user from the disk insertion / removal port 19, the support portion 88 of the eject arm 52 is pressed against the insertion end surface of the optical disk 2, and the eject arm 52 is moved to the arrow b1 in FIG. 12 as shown in FIG. It is rotated in the direction. Further, a contact member 205 of a deck arm 200 described later is also pressed by the insertion end surface of the optical disc 2 and rotated to the back side of the housing 3. At this time, since the rotation support member 71 is rotated in the direction of the arrow b1 with the mounting port 71b as a fulcrum, the eject arm 52 has the first link arm 54 engaged with the rotation support member 71 in the same direction. Moved to. On the other hand, the second link arm 55 engaged with the first link arm 54 is engaged with the guide groove 114 of the loop cam 57 by moving the first link arm 54 in the arrow b1 direction. The guide protrusion 113 is moved toward the front side of the housing 3 along the insertion guide wall 112a. Since the insertion guide wall 112a of the loop cam 57 extends toward the front surface of the housing 3 toward the right guide wall 118, the second link arm 55 is guided by the insertion guide wall 112a. The other end 54b of the first link arm 54 engaged with the other link arm is moved to the right guide wall 118 side and rotated together with the rotation support member 71 in the direction of the arrow b1. Is moved in the opposite direction to one end 54a of the.

  In other words, the first link arm 54 is moved in a direction in which the locking portion 96 near the other end 54 b with which the second link arm 55 is engaged is separated from the locking portion 98 of the main chassis 6. Therefore, as the optical disk 2 is inserted and the eject arm 52 is rotated in the direction of the arrow b1 in FIG. The engaging portion 96 of the first link arm 54 is biased so as to be attracted to the engaging portion 98 of the main chassis 6. Here, since the engagement hole 80 of the rotation support member 71 is rotated to the front side of the housing 3, the first link arm 54 is biased by the tension coil spring 56, thereby causing the housing 3. A force directed toward the back surface of the rotating support member 71, that is, a biasing force in the direction opposite to the rotation direction of the rotation support member 71 acts. Therefore, the eject arm 52 is urged in the direction of the arrow b2 in FIG.

  As a result, the optical disk 2 is inserted against the urging force acting on the eject arm 52 in the ejection direction, so that even when the insertion of the optical disk 2 is stopped halfway by the user, the optical disk 2 goes out of the housing 3. Since it is ejected, it is possible to prevent the optical disk 2 from remaining in the housing 3 in a halfway state.

  When the optical disc 2 is inserted by the user against the urging force and the eject arm 52 is rotated to a predetermined angle, a second piece disposed on the circuit board 59 by the bent piece 81 of the rotation support member 71. 1 switch SW1 is pressed, and the drive mechanism 120 is activated. The driving mechanism 120 receives the driving force of the driving motor 121 and causes the slider 122 to slide in the direction of arrow f1 in FIG. As a result, the loading cam plate 53 is also slid in the same direction together with the slider 122, so that the engaging convex portion 64 of the loading arm 51 is brought into contact with the first guide portion 66 a of the first cam groove 66. In the loading arm 51, when the engagement convex portion 64 is pressed in the direction of the arrow f1 by the first guide portion 66a, the abutment portion 61 rotates in the direction of the arrow a1 in FIG. The optical disk 2 is pulled in.

  When the slider 122 is slid in the direction of the arrow f1 and the optical disk 2 is transported to the centering position located on the disk mounting portion 23 by the loading arm 51, as shown in FIG. The first cam groove 66 of the plate 53 is moved from the first guide portion 66a to the second guide portion 66b. Since the second guide portion 66b is formed parallel to the sliding direction of the slider 122, the loading arm 51 does not perform the guide operation of the engaging convex portion 64 accompanying the movement of the slider 122, and the optical disc 2 is brought to the centering position. Hold. Further, when the optical disk 2 is pulled in, it is understood that the base unit 22 is lowered to the chucking release position by detecting the pressed state of the first to fourth switches SW1 to SW4. It can be transported safely.

  The optical disc 2 is loaded on the loading arm 51, guided by the left and right guide walls 117, 118, and abutted on a deck arm 200 and a centering guide 220, which will be described later, thereby centering on the disc mounting portion 23. Is done.

  Further, when the slider 122 is slid in the direction of the arrow f1, the third link arm 100 is guided by the first guide groove 125 of the slider 122 and rotated in the direction of the arrow c1 in FIG. The operation arm 58 engaged with the arm 100 is moved in the direction of the arrow d1 in FIG. Accordingly, the first link arm 54 engaged with the other end 58b of the operation arm 58 is pressed by the operation arm 58 and moved in the arrow d1 direction.

  As shown in FIG. 12, when the eject arm 52 is rotated to the starting position of the drive mechanism 120, the guide convex portion 113 of the second link arm 55 is retracted from the insertion guide wall 112a of the loop cam 57 and pulled into the guide wall 112b. Therefore, when the first link arm 54 is moved in the arrow d1 direction by the operation arm 58, the second link arm 55 is also moved in the same direction. When the first link arm 54 and the second link arm 55 are moved in the direction of the arrow d1, the first link arm 54 has a locking portion 96 formed on the other end 54b in the main chassis 6. The pulling coil spring 56 is contracted by approaching the locking portion 98 that has been made. Therefore, in the pulling-in operation of the optical disc 2, the urging force in the direction of the arrow b2 that has worked on the eject arm 52 gradually disappears. In the disk transport mechanism 50, the eject arm 52 is rotated in the direction of the arrow b1 by the operation arm 58 that receives the driving force of the drive mechanism 120, so that the pulling-in operation of the optical disk 2 by the loading arm 51 acts on the eject arm 52. This can be performed smoothly without being obstructed by the urging force in the direction and without applying a load to the optical disc 2.

  The guide protrusion 113 is urged to rotate in the direction of the arrow g2 by the torsion coil spring 119 that is locked between the second link arm 55 and the first link arm 54. When moved to the boundary between 112b and the discharge guide wall 112c, the protrusion 112e provided at this boundary can be easily overcome, and the optical disk 2 is not drawn back again toward the guide wall 112b when ejected. .

  The eject arm 52 moves in the direction of the arrow d1 while the first link arm 54 is moved in the direction of the arrow d1 by the operation arm 58 and the guide convex portion 113 of the second link arm 55 is guided by the retracting guide wall 112b. As a result, the urging force of the tension coil spring 56 disappears, and the optical disk 2 is drawn into the back side of the housing 3 by the loading arm 51, whereby the push arm 72 and the rotation support member 71 are moved to the arrow b1 in FIG. It is rotated in the direction.

  When the slider 122 is slid in the direction of the arrow f1, the connecting arm 165 engaged with the slider 122 is rotated, so that the sub-slider 151 is also slid in the direction of the arrow h1 in FIG. Then, after the optical disk 2 is centered, the base unit 22 is raised from the chucking release position to the chucking position by the slider 122 and the sub-slider 151. As a result, the optical disc 2 transported to the centering position is sandwiched between the turntable 23a and the abutting protrusion 8 formed around the opening 7 of the top plate portion 5a around the center hole 2a. Be king.

  At this time, by detecting the pressed state of the first to fourth switches SW1 to SW4, it can be seen that the base unit 22 has been raised to the chucking position, and the optical disk 2 has been chucked to the turntable 23a. I understand that.

  When the slider 122 moves in the arrow f1 direction and the sub-slider 151 is further slid in the arrow h1 direction, the base unit 22 is lowered from the chucking position to the recording / reproducing position. At this time, it is understood that the base unit 22 is lowered to the recording / reproducing position by detecting the pressed state of the first to fourth switches SW1 to SW4.

  When the optical disk 2 is chucked on the turntable 23a, the third link arm 100 is further rotated in the arrow c1 direction by the slider 122 that is slid in the arrow f1 direction, and the operation arm 58 is further moved in the arrow d1 direction. Is done. As a result, the eject arm 52 is rotated in the direction of the arrow b1 via the first link arm 54. In addition, the contact protrusion 168 at the tip of the sub-slider 151 is abutted against the bent piece 81 of the rotation support member 71, and the rotation support member 71 is rotated in the arrow b1 direction. Therefore, in the eject arm 52, the support portion 88 of the push arm 72 and the optical disc 2 are separated. Further, when the eject arm 52 is rotated in the direction of the arrow b1, the rotation piece 82 formed on the rotation support member 71 presses the centering guide 220 that is urged to rotate on the disk transport area, The centering guide 220 is separated from the side surface of the optical disc 2. Further, when the slider 122 is slid in the direction of the arrow f1, the engaging projection 64 of the loading arm 51 is moved from the second guide portion 66b of the loading cam plate 53 to the third guide portion 66c. 16 is rotated in the direction of the arrow a2, and the contact portion 61 is separated from the side surface of the optical disc 2. Furthermore, the deck arm 200 supporting the optical disk 2 when the optical disk 2 is inserted is separated from the side surface of the optical disk 2 by being pressed by the loading cam plate 53.

  As a result, the optical disk 2 is released from the various arms and the centering guide 220 and is rotatable, and waits for a recording or reproduction operation by the user.

  When the sub-slider 151 is moved in the arrow h1 direction, as shown in FIG. Restrict movement. As a result, it is possible to prevent the rotation support member 71 from rotating in the direction of the arrow b2 and the pushing arm 72 and the centering guide 220 from coming into contact with the optical disk 2 being rotationally driven.

  Further, in the loading process of the optical disk 2 of the present disk drive apparatus 1, after the optical disk 2 is chucked on the turntable 23a, the spindle motor 24a is driven to rotate the optical disk 2 halfway and the drive motor 121 is reversed. So-called double chucking is performed in which the base unit 22 is raised again to chucking. As a result, it is possible to prevent the optical disk 2 from being recorded and reproduced while being engaged with the turntable 23a halfway.

  When the recording / reproducing operation is finished and the user performs an operation of ejecting the optical disc 2, first, the drive motor 121 of the drive mechanism 120 is reversed and the slider 122 is slid in the direction of arrow f2 in FIG. As a result, the loading arm 51 is rotated in the direction of the arrow a1 in FIG. The contact portion 61 is in contact with the side surface of the optical disc 2.

  Further, after the sub-slider 151 is slid in the direction of the arrow h2 in the drawing and the pressing to the rotation support member 71 is released, the third link arm 100 is rotated in the direction of the arrow c2 by the slider 122, and the operation arm 58 is moved in the direction of arrow d2. As a result, the other end 54b of the first link arm 54 is also moved in the direction of the arrow d2, so that the eject arm 52 has the rotation support member 71 engaged with the one end 54a of the first link arm 54 in the direction of the arrow b2. And the contact portion 61 of the push-out arm 72 contacts the side surface of the optical disc 2. Here, in the eject arm 52, since the guide convex portion 113 of the second link arm 55 is moved to the discharge guide wall 112c side of the loop cam 57, the locking portion 96 of the first link arm 54 and the main chassis 6 are connected. The engaging portion 98 is rotated without being separated, and the urging force in the discharging direction by the tension coil spring 56 is not generated.

  Further, as the slider 122 moves in the arrow f2 direction, the loading cam plate 53 is moved in the same direction, so that the deck arm 200 pressed against the loading cam plate 53 is also brought into contact with the side surface of the optical disc 2. .

  Next, the slider 122 is further slid in the arrow f2 direction, and the sub-slider 151 is slid in the arrow h2 direction in FIG. 17, thereby lowering the base unit 22 from the recording / reproducing position to the chucking release position. As a result, the optical disk 2 is pushed up by the guide pin 180 erected from the bottom case 4 and the chucking with the turntable 23a is released. The guide pin 180 for releasing the chucking of the optical disc 2 will be described later.

  At this time, when the pressed state of the first to fourth switches SW1 to SW4 is detected, it can be seen that the base unit 22 has been lowered to the chucking release position, and the optical disk 2 can be safely ejected. I understand that.

  Thereafter, the third link arm 100 engaged with the slider 122 is further rotated in the direction of the arrow c2 by sliding the first guide groove 125 of the slider 122, so that the operation arm 58 is further moved to the arrow d2. Moved in the direction. As shown in FIG. 18, when the first link arm 54 is moved in the same direction as the operation arm 58 is moved in the direction of the arrow d2, the eject arm 52 is moved according to the amount of movement of the operation arm 58. The optical disk 2 is ejected by rotating in the direction of the middle arrow b2.

  At this time, the loading arm 51 can be rotated only in accordance with the slide of the loading cam plate 53 by engaging the engaging convex portion 64 with the first cam groove 66 of the loading cam plate 53. Rotation is restricted. In the loading arm 51, the engaging convex portion 64 is guided from the second guide portion 66b to the first guide portion 66a by sliding the loading cam plate 53 together with the slider 122 in the direction of the arrow f2 in FIG. . Although the loading arm 51 is restricted from rotating in the direction of the arrow a2 by the first guide portion 66a, the optical disk 2 is ejected to the front side of the housing 3 by the eject arm 52, and the first guide portion Since 66a moves to the front side of the housing 3 according to the slide of the slider 122, it can be rotated in the direction of the arrow a2, so that the ejection of the optical disc 2 by the eject arm 52 is not hindered.

  Further, as described above, the loading arm 51 is restricted from rotating in the direction of the arrow a2 which is the ejection direction of the optical disc 2 by the engagement convex portion 64 being in contact with the first guide portion 66a. Since the slide and eject arm 52 can be turned in the direction of the arrow a2, the optical disc 2 is suddenly ejected from the disc insertion / removal port 19 by being biased in the ejection direction by the deck arm 200. This can be prevented.

  Further, the loading arm 51 is always urged in the direction of the arrow a1 that urges the optical disk 2 into the housing 3 by a plate spring 62 fixed to the deck portion 4a. Accordingly, the loading arm 51 is biased in the direction of the arrow a1 by the leaf spring 62 when the engagement convex portion 64 is rotated to a position where it comes into contact with the first guide portion 66a, so that the optical disc 2 is ejected. When the arm 52 and the deck arm 200 are moved in the ejection direction, a biasing force in the insertion direction is applied to prevent the optical disc 2 from popping out. The urging force of the leaf spring 62 is a small force compared to the rotational force of the eject arm 52 in the ejection direction, and does not interfere with the ejection of the optical disk 2 by the eject arm 52, and an excessive load is applied to the optical disk 2. It does not give.

  Further, when the first link arm 54 is moved in the direction of the arrow d2 by the operation arm 58, the guide protrusion 113 of the second link arm 55 is surrounded by the discharge guide wall 112c and the outer peripheral wall 112d of the loop cam 57. Slide in the area. At this time, the rotation support member 71 of the eject arm 52 is also rotated in the direction of the arrow b2 by the operation arm 58 via the first link arm 54, whereby the engagement hole with which the first link arm 54 is engaged. 80 is moved toward the back side of the housing 3 and in the direction of the arrow b2. As a result, the first link arm 54 engaged with the engagement hole 80 moves toward the back side of the housing 3 and in the direction of the arrow d2 with substantially the same posture without changing the angle. Since the locking portion 98 formed on the main chassis 6 is formed in the vicinity of the left side corner portion on the back side where the loop cam 57 is locked, the locking portion 96 of the first link arm 54 is engaged with the main chassis 6. The tension coil spring 56 is not stretched by moving while maintaining substantially the same distance from the stop 98. Therefore, the eject arm 52 is not biased by the tension coil spring 56, but is rotated in the direction of the arrow b2 that is the discharge direction by the driving force of the driving mechanism 120, and the eject arm 52 is rotated by an amount corresponding to the slide of the slider 122. Therefore, the optical disk 2 can be stably discharged to a predetermined discharge position without ejecting the optical disk 2 by the urging force of the tension coil spring 56.

  At this time, the disk transport mechanism 50 moves the arrow relative to the eject arm 52 and the first link arm 54 by sliding the optical disk 2 on the panel curtain provided in the disk insertion / removal port 19 of the front panel 18. When the urging force in the direction b1 is applied, the first link arm is brought into contact with the side wall in the cam groove 108 of the operation arm 58, as described above, as described above. Since the rotation of the slider 54 in the direction of the arrow d2 is restricted, the first link arm 54 is accompanied by the operation arm 58 that is moved in the direction of the arrow d2 by an amount corresponding to the sliding amount of the slider 122 in the direction of the arrow f2. And the eject arm 52 is rotated. Therefore, the disc transport mechanism 50 can rotate the eject arm 52 by an amount corresponding to the sliding operation of the slider 122 against the urging force in the arrow b1 direction.

  Then, as shown in FIG. 19, when the slider 122 is moved to the initial position, the slide switch is stopped by pressing the detection switch, and in response to this, the eject arm 52 is also connected to the operation arm 58 and the first link. The optical disk 2 is rotated to the initial position by the arm 54 and stopped at the position where the central hole 2a is ejected from the disk insertion / removal port 19. At this time, when the pressed state of the first to fourth switches SW1 to SW4 is detected, it is understood that the optical disk 2 has been transported to the predetermined ejection position by the eject arm 52, and the drive of the drive motor 121 is stopped.

  Here, the pull-in timing of the optical disk 2 inserted by the user by the loading arm 51 and the discharge restriction timing of the loading arm 51 when the optical disk 2 is discharged are the position in the sliding direction of the loading cam plate 53 of the first guide portion 66a. It is determined by the length of the second guide portion 66b.

  That is, as described above, the loading arm 51 is restricted from rotating by the engagement convex portion 64 being guided by the first cam groove 66 of the loading cam plate 53, and the eject arm 52 is moved in the direction of the arrow b2. When the optical disc 2 is rotated and started to be ejected, the engagement convex portion 64 is brought into contact with the second guide portion 66b and the first guide portion 66a, thereby moving the optical disc 2 in the direction of arrow a2. And the amount of rotation in the direction of the arrow a2 is determined according to the amount of movement of the first guide portion 66a in the direction of the arrow f2. Therefore, if the length of the second guide portion 66b is shortened and the position of the first guide portion 66a is moved to the front side in the sliding direction of the loading cam plate 53 (in the direction of the arrow f2), the engagement is increased accordingly. The timing at which the convex portion 64 is regulated from the second guide portion 66b to the first guide portion 66a is advanced, and the eject arm 52 is moved in the arrow a2 direction at a relatively early timing relative to the rotation of the eject arm 52 in the arrow b2 direction. It can be turned. This prevents the loading arm 51 from obstructing the ejection operation of the optical disc 2 by delaying the rotation timing of the loading arm 51 by the loading cam plate 53 with respect to the ejection operation of the optical disc 2 by the eject arm 52. it can.

  On the other hand, the drawing timing of the optical disc 2 is also determined by the position of the first guide portion 66a of the loading cam plate 53 and the length of the second guide portion 66b. That is, when the optical disk 2 is inserted by the user and the drive mechanism 120 is activated, the slider 122 and the loading cam plate 53 are moved in the direction of the arrow f1. As a result, the engaging convex portion 64 is brought into contact with the first guide portion 66a moving in the direction of the arrow f1, so that the loading arm 51 is rotated in the direction of the arrow a1, and the optical disc 2 inserted by the user is inserted into the housing 3. Pull back to the back side. Therefore, if the second guide portion 66b is long and the sliding direction position of the loading cam plate 53 of the first guide portion 66a is formed on the back side in the sliding direction (in the direction of the arrow f1), the amount from the disk insertion / removal port 19 is increased accordingly. The drawing by the loading arm 51 can be started even when the insertion depth is shallow, that is, the user does not insert the optical disc 2 deeply.

  Therefore, in the disk transport mechanism 50, the position where the first guide portion 66a of the loading cam plate 53 is formed and the first position of the loading cam plate 53 so that the loading arm 51 can prevent the optical disk 2 from being ejected and prevent the optical disk 2 from being pulled in early. The length of the second guide portion 66b is determined. In this disk drive device 1, as shown in FIG. 13, for example, when an optical disk having a diameter of 12 cm is used, the distance from the disk insertion / removal port 19 to the side surface on the rear side in the optical disk insertion direction is about 23 mm to 30 mm. It can be designed so that it can be pulled in by the loading arm 51. In this manner, the disk drive device 1 can reduce the insertion distance by the user by setting the drawing position of the optical disk 2 away from the disk insertion / removal port 19, and pulls the optical disk 2 into the housing 3 without inserting it. Therefore, the feeling of use can be improved.

  In addition, when the optical disk 2 is retracted, the loading arm 51 is retracted in the insertion direction (arrow a1 direction), and when the eject arm 52 is ejecting the optical disk 2, the loading arm 51 is ejected in the ejection direction (arrow a2 direction). The movement timing can be defined by the first cam groove 66 formed in the loading cam plate 53. The loading cam plate 53 is inserted in and removed from the slider 122 when the optical disk 2 is drawn and ejected (arrow f1, It is operated by reciprocating driving in the direction f2). Further, the slider 122 is slid at the same speed by the same amount on the same route when the optical disk 2 is drawn and ejected. Therefore, when the optical disk 2 is drawn and ejected, the amount of rotation of the loading arm 51 relative to the slide amount of the slider 122 and the loading cam plate 53 in the arrow a1 direction and the a2 direction is the same. And the rotation in the direction of the arrow a2 are uniquely determined by the slide positions of the slider 122 and the loading cam plate 53.

  On the other hand, the eject arm 52 that rotates the optical disc 2 in the ejection direction (arrow b2 direction) has a rotation amount in the insertion direction (arrow b1 direction) with respect to the slide amount of the slider 122 when the optical disc 2 is inserted, and a slider during ejection. This is different from the rotation amount in the discharge direction (arrow b2 direction) with respect to the 122 slide amount. This is because when the optical disk 2 is retracted, the eject arm 52 is rotated in the insertion direction (arrow b1 direction) to some extent by the user's insertion operation before the slider 122 is driven, whereas the optical disk 2 is ejected. In some cases, the optical disc 2 is ejected including the amount inserted by the user. That is, although the slide amount of the slider 122 is the same when the optical disk 2 is drawn and ejected, the rotation amount of the eject arm 52 that is rotated according to the slide of the slider 122 is different.

  The difference in the rotation timing of the eject arm 52 with respect to the movement of the slider 122 when the optical disc 2 is inserted and ejected is the second link connected to the rotation support member 71 of the eject arm 52 via the first link arm 54. This is because the movement path of the arm 55 is regulated by the loop cam 57 from insertion to ejection of the optical disk 2. That is, when the optical disk 2 is inserted from the disk insertion / removal port 19 and the eject arm 52 is rotated in the direction of the arrow b1 in a state where the slider 122 is not driven, the second link arm 55 is guided by the insertion guide wall 112a. . Then, when the slider 122 is driven from the front surface to the back surface of the housing 3, the eject arm 52 is further rotated in the direction of the arrow b 1, and the optical disk 2 is retracted to the disk mounting portion 23. Guided by the wall 112b. Then, when the slider 122 is driven from the back surface to the front surface of the housing 3, the eject arm is rotated in the direction of the arrow b 2, and the optical disk 2 is ejected from the disk mounting portion 23 to the disk insertion / removal port 19. 55 is guided to the discharge guide wall 112c and moved to the insertion guide wall 112a. As described above, the second link arm 55 is guided by the loop cam 57 with respect to the movement amount of the slider 122 when the optical disk 2 is inserted and retracted, and the second link is associated with the movement amount of the slider 122 when the optical disk 2 is ejected. The arm 55 is configured to be different from the amount of movement guided by the loop cam 57.

  As described above, the loading arm 51 and the eject arm 52 are both rotated according to the sliding operation of the slider 122, but the loading arm 51 is linearly reciprocated along with the slider 122. In contrast, the eject arm 52 is controlled by a second link arm 55 that takes a circular trajectory with respect to the reciprocating trajectory of the slider 122. Also in the disk transport mechanism 50, the trajectory of the guide convex portion 113 of the second link arm 55 that orbits the guide groove 114 of the loop cam 57 with respect to the reciprocating trajectory of the slider 122 can be uniquely determined. The rotation timing of the loading arm 51 and the eject arm 52 can be matched to the reciprocating drive.

  Here, with respect to the guide groove 114 of the loop cam 57 in which the guide convex portion 113 of the second link arm 55 slides, the guide convex portion that moves according to the movement of the eject arm 52 and the slider 122 from insertion to ejection of the optical disc 2. In the case of forming a narrow shape without taking a margin with respect to the trajectory of 113, the guide convex portion 113 cannot be smoothly moved due to an accuracy error, a mounting error, a secular change, etc. of the loop cam 57 and various arms. There is a possibility that 113 cannot go around the guide groove 114. Therefore, the loop cam 57 needs to have a certain width for the guide groove 114 around which the guide protrusion 113 circulates.

  On the other hand, giving the width to the guide groove 114 may cause the second link arm 55 and the eject arm 52 to not follow the movement of the slider 122 with high accuracy. For example, when the optical disk 2 is ejected, to the ejection guide wall 112c of the second link arm 55 moved through the operation arm 58 and the first link arm 54 as the slider 122 is moved in the arrow f2 direction. And the sliding timing of the loading cam plate 53 accompanying the slide of the slider 122 cause a deviation, and the eject arm 52 rotates in the arrow a2 direction in accordance with the rotation timing in the arrow b2 direction and the slider 122 sliding. Deviation may occur between the rotation timing of the loading arm 51 and the loading arm 51. For this reason, when the optical disk 2 is about to be ejected by the eject arm 52, the loading arm 51 is not opened, and there is a possibility that the ejection of the optical disk 2 is hindered.

  In order to absorb such a difference between the ejection timing of the eject arm 52 and the opening timing of the loading arm 51 and to smoothly eject the optical disc 2 by the eject arm 52, a rotation support member 63 formed in the loading arm 51 is provided. The insertion hole 60 to be inserted is formed in a long hole shape. In the loading arm 51, the insertion hole 60 is formed in a long hole shape, so that the rotation fulcrum moves along the longitudinal direction of the insertion hole 60. As a result, when the loading arm 51 is urged in the direction of the arrow a2 by the optical disc 2 pressed by the eject arm 52, the rotation fulcrum is moved and can be rotated in the same direction. Therefore, even when the rotation timing of the eject arm 52 and the loading arm 51 due to the stroke of the slider 122 is deviated, the ejection of the optical disc 2 is not hindered.

  Further, by forming the insertion hole 60 of the loading arm 51 into a long hole shape, the first guide portion 66 a of the first cam groove 66 formed in the loading cam plate 53 is provided on the back side of the housing 3. Even when the drawing-in timing of the optical disc 2 is advanced by elongating the second guide portion 66b, it is possible to prevent the opening timing of the loading arm 51 in the arrow a2 direction from being delayed when the optical disc 2 is ejected.

  That is, the loading arm 51 is rotated in the direction of the arrow a1 that pulls the optical disc 2 into the housing 3 when the engaging convex portion 64 is pressed by the first guide portion 66a of the first cam groove 66. If the slider 122 contacts the first guide portion 66a as soon as possible from the start of sliding, the insertion distance of the optical disc 2 by the user's hand can be shortened. On the other hand, the loading arm 51 is moved along the first guide portion 66a after the engaging convex portion 64 is guided by the second guide portion 66b of the first cam groove 66. Since the optical disc 2 can be rotated in the direction of the arrow a2 for ejecting the optical disc 2 to the outside, the eject arm 52 is pivoted in the direction of the arrow b2 for ejecting the optical disc 2 by providing the second guide portion 66b long. In this state, if the engagement convex portion 64 is not moved to the first guide portion 66a side, the loading arm 51 cannot rotate in the direction of the arrow a2, and the ejection of the optical disc 2 is hindered.

  At this time, since the rotation fulcrum is shifted by forming the insertion hole 60 in the shape of a long hole, the loading arm 51 can be rotated in the direction of the arrow a2, and the arrow of the loading arm 51 is ejected when the optical disk 2 is ejected. It is possible to prevent the opening timing in the a2 direction from being delayed.

  In addition, the loading arm 51 is provided with a long hole-like insertion hole 60 and the rotation support member 63 is provided on the deck portion 4a. A long hole-like insertion hole 60 may be formed in the upper and lower portions, and the loading arm 51 may be rotatably supported.

  Here, the disc transport mechanism 50 grips the optical disc 2 by recognizing that the user has made a mistake in the optical disc 2 to be inserted in a state where the predetermined amount of the optical disc 2 has been inserted and the driving of the drive motor 121 is started. In this case, after the drive motor 121 is stopped, the optical disk 2 is ejected by reverse driving.

  Specifically, when a predetermined amount of the optical disk 2 is inserted from the disk insertion / removal port 19 and the drive motor 121 is driven, the loading arm 51 moves to the arrow a1 as the slider 122 and the loading cam plate 53 move in the direction of the arrow f1. It is rotated in the direction. Here, when the optical disk 2 is gripped by the user, the rotation of the loading arm 51 is restricted, and the loading cam plate 53 is slid in the direction of the arrow f1 together with the slider 122. The convex portion 64 is locked to the first guide portion 66 a of the loading cam plate 53. Thereby, the slide of the slider 122 and the loading cam plate 53 in the direction of the arrow f1 is restricted. In this state, when a predetermined time elapses, the drive motor 121 is driven in the reverse direction, and the optical disk 2 is ejected in a process reverse to the process of inserting the optical disk 2 described above.

  At this time, since the optical disc 2 is inserted by a predetermined amount, the guide projection 113 of the second link arm 55 is also slid on the insertion guide wall 112a of the loop cam 57. The portion 96 and the locking portion 98 of the main chassis 6 are moved away from each other, and the tension coil spring 56 spanned between them is extended. Therefore, when the drive motor 121 is driven in the reverse direction and the slider 122 is completely slid in the direction of the arrow f2, the first link arm 54 that receives the urging force of the tension coil spring 56 is rotated in the eject arm 52, and the direction of the arrow b2 is reached. It is rotated. Therefore, in the disk drive device 1, the eject arm 52 is urged to rotate in the direction of the arrow b 2 that ejects the optical disk 2 out of the disk insertion / removal port 19 by the tension coil spring 56, and the optical disk 2 is ejected by the urging force of the tension coil spring 56. .

  For this reason, the guide projection 113 of the second link arm 55 moves backward through the insertion guide wall 112a without passing through the discharge guide wall 112c, so that the eject arm 52 is ejected depending on the slide of the slider 122 in the arrow f2 direction. Although it cannot be rotated to the position, the eject arm 52 can be rotated to the ejection position by the urging force of the tension coil spring 56 stored when the optical disk 2 is inserted. Therefore, when the optical disk 2 is loaded, the drive of the drive motor 121 is stopped when the optical disk 2 is grabbed, and the optical disk 2 can be prevented from being left in a state of being halfway through the disk insertion / removal port 19. .

  The abnormal conveyance of the optical disc 2 can be detected by the microcomputer monitoring the pressed state of the first to fourth switches SW1 to SW4 mounted on the circuit board 59. That is, the time for which the slider 122 moves from the state in which the first switch SW1 is pressed by the eject arm 52 until it is detected that the base unit 22 is lowered to the chucking release position is a predetermined time, for example, 3 seconds or more. If it takes time, or if it takes a predetermined time or more until the base unit 22 moves from the chucking release position to the recording / playback position through the chucking position, it is detected that the conveyance is abnormal and the drive motor 121 is detected. The optical disc 2 is ejected by stopping and reversing.

  Further, when an obstacle such as a book is placed in front of the disk insertion / removal port 19 when the optical disk 2 is ejected, the optical disk 2 cannot contact and eject the obstacle, and the drive motor of the drive mechanism 120 An excessive load is applied to 121. Further, when the optical disk 2 is sandwiched between the eject arm 52 that is rotated by the driving force of the drive motor 121 and the obstacle, an excessive load is applied to the optical disk 2.

  Here, as shown in FIG. 23, in the disk drive device 1, the rotation support member 71 and the pushing arm 72 of the eject arm 52 are moved in the direction of the arrow b1 around the opening 77 and the engagement convex portion 85 by the caulking shaft 89. While being rotatably engaged in the b2 direction, the coil spring 73 is urged by a predetermined force in the arrow b2 direction. Accordingly, when the optical disk 2 is ejected, an obstacle that prevents the optical disk 2 from being ejected is placed, and a force opposite to the ejection direction of the optical disk 2 (arrow b2 direction) is applied to the eject arm 52 in the opposite direction. When the pushing arm 72 receiving the force rotates in the direction of the arrow b1, it is possible to prevent a situation in which an excessive load is applied to the drive motor 121 and the optical disc 2.

  Then, the disk drive device 1 stops the drive of the drive motor 121 when the push-out arm 72 of the eject arm 52 is rotated in the arrow b1 direction. If a predetermined time elapses while an obstacle is placed in front of the disk insertion / removal port 19 and the ejection of the optical disk 2 is obstructed, the optical disk 2 is again drawn into the disk mounting portion 23 side. That is, when the optical disk 2 is ejected to the outside from the disk insertion / removal port 19 and one side surface of the optical disk 2 comes into contact with an obstacle and the ejection of the optical disk 2 is stopped for a predetermined time, the drive motor 121 It is rotated in reverse. Accordingly, the first and second link arms 54 and 55 and the operation arm 58 described above are moved in the reverse direction to perform the loading operation of the optical disc 2. Also in this case, since the guide convex portion 113 of the second link arm 55 moves backward along the discharge guide wall 112c, the first link arm 54 and the locking portion 98 of the main chassis 6 are separated from each other. Therefore, the tension coil spring 56 is not expanded, and the urging force in the ejection direction does not act on the eject arm 52.

  As a result, the disk drive device 1 can prevent the optical disk 2 from being left in a state of being sandwiched between the eject arm 52 that is rotated in the ejection direction and the obstacle, and the drive motor 121 and the optical disk. 2 can be prevented from being overloaded.

  The abnormal conveyance of the optical disc 2 can be detected by the microcomputer monitoring the pressed state of the first to fourth switches SW1 to SW4 mounted on the circuit board 59. That is, it takes a predetermined time, for example, 3 seconds or longer, until the drive motor 121 is reversed and the base unit 22 moves down from the recording / reproducing position to the chucking release position through the chucking position. When the slider 122 moves for a predetermined time or more from when the base unit 22 is lowered to the chucking release position until all the first to fourth switches SW1 to SW4 are not pressed, abnormal transport is performed. When it is detected, the drive motor 121 is stopped, and the optical disk 2 is loaded by rotating it forward.

  The loop cam 57 has a large movable region 114a of the guide convex portion 113 in each extending direction of the insertion guide wall 112a and the retracting guide wall 112b of the guide groove 114. When the optical disk 2 is inserted to the deepest part of the housing 3 in a state where the power of the disk drive device 1 is not turned on, the movable area 114a collides with the guide convex part 113 and the outer peripheral part 112d of the loop cam 57 to convey the disk. The mechanism 50 is prevented from being damaged, and the maximum movable range of the guide convex portion 113 accompanying the insertion of the optical disc 2 is secured.

  That is, as shown in FIG. 35, in the state where the power of the disk drive device 1 is turned on, when the optical disk 2 is inserted, the drive motor 121 is driven to slide the slider 122 in the direction of the arrow f1 and the operation arm 58. In accordance with the movement in the direction of the arrow d1, the guide protrusion 113 moves the retracting guide wall 112b toward the discharge guide wall 112c. However, in the state where the power of the disk drive device 1 is not turned on, the drive motor 121 is not driven even if the optical disk 2 is inserted to the back of the housing 3. 55 is not moved toward the discharge guide wall 112c. Therefore, the guide convex portion 113 of the second link arm 55 is formed so that the eject arm 52 is further rotated in the direction of the arrow b1 when the user pushes the optical disc 2 further into the back than the original pulling start position. It deviates from the original route and collides with the outer peripheral portion 112d, and an excessive load is applied to the loop cam 57, the first and second link arms 54 and 55, or the eject arm 52.

  Therefore, the loop cam 57 ensures the maximum movable range of the guide convex portion 113 as the movable region 114a when the optical disc 2 is inserted to the deepest portion of the housing 3 in a state where the power is not turned on. As a result, the disk drive device 1 allows the user to pull the optical disk 2 by the loading arm 51 even when the optical disk 2 is inserted to the deepest part of the housing 3 in a state where the power is not turned on or when the power is turned on. Even when it is pushed to the deepest part of the housing 3 without waiting, the disc transport mechanism 50 can be prevented from being damaged due to the collision between the guide projection 113 and the loop cam 57.

  As described above, according to the disc transport mechanism 50 of the disc drive apparatus 1 to which the present invention is applied, when the optical disc 2 is inserted into the predetermined position by the user, the insertion guide wall of the loop cam 57 is inserted. The guide projection 113 of the second link arm 55 is slid on 112a to guide the first link arm 54 and the locking portion 98 of the main chassis 6 in a direction away from each other. Since the urging force in the discharge direction by the tension coil spring 56 that is stretched can be applied to the eject arm 52, the optical disk 2 is inserted into the housing 3 halfway when the user stops inserting the optical disk 2. It is possible to prevent a situation where the device is left in a state where it is left.

  When the optical disk is retracted, the guide projection 113 is slid on the retracting guide wall 112 b of the loop cam 57 to bring the first link arm 54 and the locking portion 98 close to each other and the operation arm 58 further ejects the arm 52. Is turned in the retracting direction to eliminate the urging force applied to the ejecting arm 52 in the ejecting direction by the tension coil spring 56, and according to the operation of the slider 122 and the operating arm 58 receiving the driving force of the driving mechanism 120. The eject arm 52 can be rotated.

  When the optical disk 2 is ejected, the guide projection 113 is slid on the ejection guide wall 112c of the loop cam 57, so that the first link arm 54 and the engaging portion 98 are not separated from each other, and the slider 122 and the operation arm 58 are not separated. The eject arm 52 can be rotated in the discharge direction by an amount corresponding to the operation.

  Therefore, the disk transport mechanism 50 stably discharges the optical disk 2 to a predetermined stop position where the central hole 2a of the optical disk 2 is discharged out of the housing 3 by the driving force of the driving mechanism 120 without depending on the elastic force. Can do.

  Further, since the disc transport mechanism 50 does not employ a mechanism for rotating the eject arm 52 by the urging force of the tension coil spring 56 when the optical disc 2 is ejected, the eject lever receiving the urging force comes into contact with the optical disc. There is also no contact sound generated in the Therefore, the disk drive device 1 can improve the feeling of use without noise when the optical disk 2 is ejected.

  Next, a description will be given of the deck arm 200 that functions as a support arm that supports the optical disk 2 in order to perform stable conveyance when the optical disk 2 is inserted and removed. As shown in FIG. 11, the deck arm 200 is rotatably provided on the deck portion 4 a of the bottom case 4 and on the back side of the housing 3, and is in a state of waiting for insertion of the optical disk 2. It is urged to rotate toward the insertion / removal port 19 side, supports the inserted optical disk 2, prevents collision of the optical disk 2 with the disk mounting portion 23, etc., and performs stable conveyance during insertion / removal. Specifically, as shown in FIG. 37, the deck arm 200 is supported by the deck portion 4a so as to be rotatable, so that the deck member 200 is in contact with the optical disc 2, and is supported coaxially with the arm member 201. A pressing plate 202 that presses 201 and a coil spring 203 that urges the arm member 201 to rotate are provided, and the arm member 201 and the pressing plate 202 are rotatably attached to the deck portion 4 a by a caulking shaft 204. .

  The arm member 201 includes a substantially rectangular plate-like rotation plate 201a, and an arm portion 201b that is erected from one side edge in the longitudinal direction of the rotation plate 201a and extends in the longitudinal direction. An abutting member 205 that abuts on the optical disc 2 is provided at the tip of 201b. The rotation plate 201a is provided with a rotation support portion supported by the deck portion 4a at one end in the longitudinal direction, and a guide piece 206 for guiding the rotation of the pressing plate 202 at the other end side. Further, the arm portion 201b is formed with a slit 207 that is engaged with one end 203a of the coil spring 203 at an end portion on the side of the rotation support portion in the longitudinal direction.

  The pressing plate 202 supported coaxially with the arm member 201 is for reliably separating the arm member 201 from the outer periphery of the disk when the optical disk 2 is mounted on the turntable 23a. A main surface portion 202a disposed on the plate 201a and a pressing arm 202b that rises from one side edge of the main surface portion 202a on the arm portion 201b side and presses the arm portion 201b. The main surface portion 202a is formed in a substantially rectangular shape, provided with a rotation support portion supported by the deck portion 4a together with the arm member 201 at one end in the longitudinal direction, and formed at the rotation plate 201a of the arm member 201 at the other end side. A guide projection 208 guided by the guide piece 206 is projected. The pressing plate 202 is prevented from being lifted from the rotating plate 201a by the guide convex portion 208 being guided by the guide piece 206. The pressing plate 202 is formed with a contact piece 209 that is in contact with the leading end portion of the loading cam plate 53 slid in the direction of the arrow f1 on the side edge portion opposite to the side edge where the pressing arm 202b is provided. ing. The deck arm 200 is rotated in the direction of the arrow i1 when the contact piece 209 is pressed by the loading cam plate 53, and the contact member 205 provided at the tip of the arm portion 201b is separated from the outer peripheral surface of the optical disc 2. Is done.

  The pressing arm 202 b erected from the main surface portion 202 a extends toward the arm member 201, and the tip is in contact with the arm portion 201 b of the arm member 201. The pressing arm 202b presses the arm portion 201b in the arrow i1 direction when the main surface portion 202a of the pressing plate 202 is pressed by the loading cam plate 53.

  The arm member 201 and the pressing plate 202 are rotatably supported on the deck portion 4a by a caulking shaft 204, and a coil spring 203 is wound around the caulking shaft 204, and the coil spring 203 is always in the discharge direction of the optical disc 2. It is urged to rotate in the direction of an arrow i2. The coil spring 203 has one end 203 a locked to the slit 207 of the arm portion 201 b and the other end 203 b locked to a regulation arm 212 that regulates the urging force of the coil spring 203.

  When the deck arm 200 is rotated in the direction of arrow i1 on the back side of the housing 3, the restriction arm 212 increases the urging force in the direction of arrow i2 by moving the other end 203b of the coil spring 203. This is to prevent it from going on. That is, the restricting arm 212 is a moving member that moves the other end 203 b that is a fulcrum of the coil spring 203 in accordance with the conveyance of the optical disc 2. As with the deck arm 200, the restricting arm 212 is provided on the side of the arm main body 213 that is rotatably mounted on the deck portion 4a and the one end 213a of the arm main body 213, and the other end 203b of the coil spring 203 is locked. And a rotation guide provided on the other end 213b side of the arm body 213 and engaged with a fourth guide portion 66d of a first cam groove 66 formed in the loading cam plate 53. Part 215.

  The arm main body 213 is formed in an elongated shape, and an insertion piece 216 through which a rotation support pin 217 that rotatably locks the arm main body 213 to the deck portion 4a is provided in the middle of the longitudinal direction. Yes. The insertion piece 216 has an insertion hole 216a through which the rotation support pin 217 is inserted. The arm main body 213 is locked to the deck portion 4a so as to be rotatable about the insertion piece 216 by inserting the rotation support pin 217 through the insertion piece 216. Further, the rotation support pin 217 is protruded on the deck portion 4a through the insertion hole 216a, so that the rotation support pin 217 is inserted into the third cam groove 69 formed in the loading cam plate 53 in parallel with the sliding direction, and loaded. The slide of the cam plate 53 is guided.

  The spring locking portion 214 formed at one end 213a of the arm body 213 is locked at the other end 203b of the coil spring 203. As a result, the coil spring 203 holds the arm member 201 whose one end 203a is engaged with the slit 207 of the arm portion 201b and the regulating arm 212 at a predetermined interval. The coil spring 203 rotates the arm member 201 in the direction of the arrow i1 when the optical disk 2 is inserted. Therefore, when the rotation of the restricting arm 212 is restricted, the winding portion inserted through the caulking shaft 204 is provided. One end 203a, which is locked to the slit 207 of the arm portion 201b, is moved in a direction away from the other end 203b, centering on 203c. As a result, the one end 203a of the coil spring 203 is urged toward the other end 203b, so that the arm portion 201b of the arm member 201 that has received this urging force also moves to the casing 3 as the optical disc 2 is inserted into the casing 3. Is energized in the direction of arrow i2, which is the front side of the. Therefore, since the urging force in the ejecting direction is applied to the deck arm 200 that has received the urging force of the coil spring 203, the deck arm 200 sandwiches and supports the inserted optical disk 2 by the eject arm 52 and the loading arm 51. Can do.

  The rotation guide portion 215 provided at the other end 203b of the arm main body 213 is inserted into the fourth guide portion 66d of the loading cam plate 53 as shown in FIG. The regulating arm 212 is rotated according to the direction and the slide in the f2 direction, and the urging force of the coil spring 203 is controlled. That is, as shown in FIGS. 13, 14, and 15, when the optical disk 2 is inserted and the loading cam plate 53 is slid in the direction of the arrow f <b> 1 together with the slider 122, By being guided by the guide portion 66d, the arm main body 213 is rotated with the insertion piece 216 as a fulcrum, and the spring locking portion 214 is rotated in the arrow j1 direction following the deck arm 200 rotating in the arrow i1 direction. . When the spring locking portion 214 follows the deck arm 200, the coil spring 203 does not separate the one end 203 a locked to the arm portion 201 b and the other end 203 b locked to the spring locking portion 214. Therefore, the urging force does not increase as the deck arm 200 rotates in the direction of the arrow i1. Therefore, the regulation arm 212 follows as the deck arm 200 rotates, so that the urging force of the coil spring 203 that urges the arm member 201 in the ejecting direction can be maintained constant. The pull-in operation of the optical disc 2 is not significantly hindered.

  When the loading cam plate 53 is slid in the direction of the arrow f2, the rotation guide portion 215 is rotated by being guided by the fourth guide portion 66d as shown in FIG. Is rotated in the direction of arrow j2. At this time, the deck arm 200 is also urged in the direction in which the one end 203a approaches the other end 203b by the urging force of the coil spring 203, so that the arm member 201 is rotated in the arrow i2 direction. When the optical disk 2 is ejected and the rotation of the spring locking portion 214 in the direction of the arrow j2 is stopped, the deck arm 200 is also rotated to the initial position and waits for the insertion of the optical disk 2.

  The contact member 205 provided at the tip of the arm portion 201b is made of a softer resin than the optical disc 2, and a central portion that comes into contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal port 19 is curved inward. And the flange part expanded in diameter is formed in the lower end part, and it is formed so that the movement of the height direction of the optical disk 2 can be controlled.

  As described above, the deck arm 200 is not limited to supporting and transporting the optical disk 2 with a constant force, and prevents the small-diameter optical disk 101 from being erroneously inserted, and centers the large-diameter optical disk 2. You can also. That is, in the deck arm 200, when the disk drive device 1 is formed exclusively for the optical disk 2 having a large diameter (for example, 12 cm in diameter), the user erroneously inserts the optical disk 101 having a small diameter (for example, 8 cm in diameter). Can be prepared.

  When the small-diameter disk 101 is brought into contact with the push-out arm 72 of the eject arm 52, as shown in FIG. 36, the small-diameter disc 101 is engaged with the tension coil spring 56 or the push-out arm 72 locked to the first link arm 54. The biasing force in the direction of arrow b2 by the coil spring 73 is pushed back out of the disk insertion / removal port 19 and the eject arm 52 is not rotated to the position where the drive mechanism 120 is driven. On the other hand, when the small-diameter disk 101 is inserted in a biased manner toward the loading arm 51, the small-diameter disk 101 is inserted into the housing 3 without being brought into contact with the push-out arm 72 of the eject arm 52, and from the rotation region of the eject arm 52. There is a risk that it will remain at a position that is out of place.

  Therefore, even when the small-diameter disk 101 is biased and inserted into the loading arm 51 side by the deck arm 200 provided on the deck portion 4a opposite to the eject arm 52, the small-diameter disk is inserted to the back of the housing 3. Can be prevented.

  Next, operations of the deck arm 200 and the restriction arm 212 as described above in the process of inserting, retracting, and ejecting the optical disk 2 will be described. As shown in FIG. 11, in a state where the optical disk 2 is waiting to be inserted, the regulating arm 212 is spring-engaged by the rotation guide portion 215 being guided by the fourth guide portion 66 d of the loading cam plate 53. The part 214 is rotated in the direction of the arrow j2. Further, the deck arm 200 is biased by the one end 203a of the coil spring 203 by rotating the spring locking portion 214 in the direction of arrow j2, and the arm member 201 is rotated in the direction of arrow i2. At this time, the deck arm 200 is restricted from rotating in the direction of arrow i <b> 2 by the tip of the guide piece 206 coming into contact with the tip of the loading cam plate 53.

  In a state where the optical disk 2 is waiting to be inserted, the eject arm 52 and the deck arm 200 are in contact with the small-diameter disk 101 in which at least one of the pushing arm 72 and the contact member 205 is inserted from the disk insertion / removal port 19. It is possible. As shown in FIG. 38, when the small-diameter disk 101 is biased toward the deck portion 4a and the small-diameter disk 101 is inserted into the housing 3, the deck arm 200 is pressed against the small-diameter disk 101 by the contact member 205. The arm part 201b is rotated in the arrow i1 direction. Accordingly, since one end 203a of the coil spring 203 locked to the arm portion 201b is separated from the other end 203b locked to the spring locking portion 214, the deck arm 200 moves in the direction of arrow i2, which is the discharge direction. A biasing force of the coil spring 203 is generated. The drive mechanism 120 is not driven even when the small-diameter disk 101 is completely inserted from the disk insertion / removal port 19, and is thus discharged out of the housing 3 by the deck arm 200. Thereby, even when the small-diameter disk 101 is mistakenly inserted, the small-diameter disk 101 can be reliably discharged without remaining in the housing 3.

  When the large-diameter optical disk 2 is inserted, the deck arm 200 is pressed by the optical disk 2 and the arm member 201 rotates in the direction of the arrow i1. As shown in FIG. 12, in the insertion process of the optical disc 2, the drive mechanism 120 is not driven and the slider 122 and the loading cam plate 53 are not slid, so the spring locking portion 214 of the restriction arm 212 is not rotated. Therefore, when the arm member 201 is rotated in the direction of the arrow i1, the coil spring 203 is separated from the one end 203a locked to the arm member 201 and the other end 203b locked to the spring locking portion 214. The urging force in the direction of arrow i2 is applied to the deck arm 200.

  When the optical disk 2 is pulled in, the loading cam plate 53 is slid in the same direction as the slider 122 slides in the arrow f1 direction. When the loading cam plate 53 is slid, as shown in FIGS. 13, 14, and 15, the deck arm 200 is further rotated in the direction of the arrow i1 by the drawing of the optical disk 2 by the loading arm 51, and the first Guided by the fourth guide portion 66 d of the cam groove 66, the restricting arm 212 is rotated about the insertion piece 216, and the spring locking portion 214 is rotated in the direction of the arrow j 1 to follow the deck arm 200. Therefore, the coil spring 203 attached to the deck arm 200 does not separate the one end 203a locked to the arm member 201 and the other end 203b locked to the spring locking portion 214. The urging force acting on the deck arm 200 does not increase. As a result, the biasing force of the deck arm 200 in the direction of the arrow i2 by the coil spring 203 increases as the optical disk 2 is pulled in, and it is possible to prevent the pulling operation by the loading arm 51 from being hindered. Even in the drawing process of the optical disk 2, since the biasing force in the direction of arrow i2 by the coil spring 203 is applied to the deck arm 200, the contact member 205 applies the outer peripheral portion of the optical disk 2 in the same direction with a predetermined force. The optical disk 2 can be supported.

  When the optical disk 2 is almost drawn onto the disk mounting portion 23, as shown in FIG. 16, in the deck arm 200, the abutting piece 209 of the pressing plate 202 is abutted against the leading end of the loading cam plate 53, and the arrow i1. It is rotated in the direction. When the pressing plate 202 is pressed by the loading cam plate 53, the pressing arm 202b extending from the main surface portion 202a biases the arm portion 201b of the arm member 201 in the direction of arrow i1. Thereby, the deck arm 200 can reliably separate the contact member 205 attached to the arm portion 201b from the outer peripheral surface of the optical disc 2 mounted on the turntable 23a.

  In the ejecting process of the optical disc 2, the loading cam plate 53 is moved by the slider 122 in the direction of the arrow f2. When the loading cam plate 53 is slid, the loading arm 51 is rotated in the direction of arrow a2 on the front side of the housing 3, and the eject arm 52 is rotated in the direction of arrow b2, whereby the optical disc 2 is ejected. To go. Further, as shown in FIG. 18, when the loading cam plate 53 is slid, the regulating arm 212 is rotated with the insertion guide 216 as a fulcrum by the rotation guide portion 215 being guided by the fourth guide portion 66d, and the spring engagement. The stop 214 is rotated in the direction of the arrow j2. As a result, the other end 203b of the coil spring 203 is rotated in the direction of the arrow j2 together with the spring locking portion 214, so that the one end 203a of the coil spring 203 and the arm member 201 locked to the one end 203a are It is rotated in the same direction. In the deck arm 200, since the coil spring 203 is rotated in accordance with the rotation of the restriction arm 212, the urging force of the coil spring 203 is not increased, and the optical disk 2 is not ejected by the urging force of the coil spring 203.

  When the sliding of the loading cam plate 53 is stopped, the rotation of the restriction arm 212 is also stopped, so that the rotation of the deck arm 200 by the urging force of the coil spring 203 is also stopped, and the initial position for waiting for the insertion of the optical disc 2 Return to.

  Note that the deck arm 200 may prevent erroneous insertion of the small-diameter optical disc 101. In this case, the eject arm 52 and the deck arm 200 are in contact with the small-diameter disc 101 in which at least one of the push-out arm 72 and the abutting member 205 is inserted from the disc insertion / removal port 19 while waiting for the optical disc 2 to be inserted. It is possible to contact. As shown in FIG. 38, when the small-diameter disk 101 is biased toward the deck portion 4a and the small-diameter disk 101 is inserted into the housing 3, the deck arm 200 is pressed against the small-diameter disk 101 by the contact member 205. The arm part 201b is rotated in the arrow i1 direction. Accordingly, since one end 203a of the coil spring 203 locked to the arm portion 201b is separated from the other end 203b locked to the spring locking portion 214, the deck arm 200 moves in the direction of arrow i2, which is the discharge direction. A biasing force of the coil spring 203 is generated. The drive mechanism 120 is not driven even when the small-diameter disk 101 is completely inserted from the disk insertion / removal port 19, and is thus discharged out of the housing 3 by the deck arm 200. Thereby, even when the small-diameter disk 101 is mistakenly inserted, the small-diameter disk 101 can be reliably discharged without remaining in the housing 3.

  When the large-diameter optical disk 2 is inserted, the deck arm 200 is pressed by the optical disk 2 and the arm member 201 rotates in the direction of the arrow i1. As shown in FIG. 12, in the insertion process of the optical disc 2, the drive mechanism 120 is not driven and the slider 122 and the loading cam plate 53 are not slid, so the spring locking portion 214 of the restriction arm 212 is not rotated. Therefore, when the arm member 201 is rotated in the direction of the arrow i1, the coil spring 203 is separated from the one end 203a locked to the arm member 201 and the other end 203b locked to the spring locking portion 214. As a result, a biasing force in the direction of arrow i2 is applied to the deck arm 200.

  When the abutting member 205 abuts on the outer peripheral portion of the optical disk 2 and the deck arm 200 is rotated to the rear side of the housing 3 and the optical disk 2 is pulled almost to the vicinity of the disk mounting portion 23, the coil spring 203 causes the arrow i2 to move. The optical disk 2 is urged in a direction with a constant force. At this time, a centering guide 220 that is locked to the main chassis 6 is provided in the biasing direction of the contact member 205, and the loading arm 51 that pulls the optical disc 2 into the housing 3, the deck arm 200, and the centering guide 220. The optical disk 2 is centered directly above the turntable 23a of the disk mounting portion 23.

  In this manner, the deck arm 200 is supported on the deck portion 4a so as to be pivotable to a position on the back side of the housing 3 relative to the disc mounting portion 23, thereby preventing erroneous insertion of the small-diameter disc 101 and the optical disc 2. It can fulfill both functions of the centering guide. Further, since the area on the back side of the housing 3 of the deck portion 4a is secured as an empty space even when the optical disk 2 is mounted on the disk mounting portion 23, the deck arm 200 has a pivot point in this area. As a result, the space in the narrowed casing 3 can be used effectively, and the casing 3 is not increased in size.

  Next, a centering guide 220 for centering the optical disc 2 together with the deck arm 200 will be described. As shown in FIG. 3, the centering guide 220 projects from the centering guide opening 6h of the main chassis 6 toward the upper surface 6a and supports the side surface of the optical disc 2 to guide the centering. 40, a guide plate 222 provided with a guide piece 221 for supporting the side surface of the optical disc 2 and a rotating plate 223 for rotating the guide plate 222 are provided. The guide plate 222 and the rotating plate 223 Are attached to the upper surface 6a of the main chassis 6 so as to be rotatable from the rear surface side.

  The guide plate 222 is made of a resin molded product, and a guide piece 221 for guiding the outer peripheral surface of the optical disc 2 from one end of the main surface portion 222a is provided upright. The main surface portion 222a is formed with an insertion hole 224 that is continuous with the opening 229 formed in the rotating plate 223 and into which the caulking pin is inserted. The main surface portion 222a is formed with a locking hole 225 in which a locking portion 225a that is locked to a locking piece 228 standing on the rotating plate 223 is formed. Further, the main surface portion 222a is provided with a connecting convex portion 226 protruding from the back surface and the side surface of the main surface portion 222a. The guide plate 222 can be rotated integrally with the rotating plate 223 by engaging the engaging portion 225 a with the engaging piece 228 and inserting the connecting convex portion 226 into the connecting hole 230.

  The guide piece 221 is erected from the main surface of the guide plate 222 and is in contact with the side edge of the centering guide opening 6h. The guide piece 221 protrudes from the main chassis 6 to the outer periphery of the optical disc 2. And a guide portion 221b for guiding the centering by abutting. In the guide piece 221, the guide plate 222 and the rotating plate 223 are rotated and biased toward the outer peripheral side of the optical disc 2 drawn into the housing 3, so that the abutting wall 221a becomes the centering guide opening. The guide portion 221b is positioned by contacting the side edge of 6h, and the outer peripheral surface of the optical disc 2 is supported by the guide portion 221b.

  The rotating plate 223 is made of a sheet metal member. The main surface portion 223 a has a support wall 227 for supporting the guide piece 221 erected on the guide plate 222, and a locking piece 228 inserted through the locking hole 225. An opening 229 that is coaxially continuous with the insertion hole 224 and a connection hole 230 that is inserted into the connection protrusion 226 are formed.

  The support wall 227 is formed with a connection hole 230 into which a connection convex portion 226 projecting laterally from the contact wall 221a of the guide piece 221 is inserted. The support wall 227 supports the abutting wall 221 a and urges the guide piece 221 toward the outer peripheral surface of the optical disc 2 by the rotation plate 223 being rotated and biased by a tension coil spring 234 described later. The locking piece 228 is erected from the main surface portion 223 a of the rotating plate 223 and is bent to the locking portion 225 a of the locking hole 225 of the guide plate 222 by being bent in a substantially orthogonal direction. Thus, the locking piece 228 urges the guide plate 222 together with the support wall 227 toward the outer peripheral surface side of the optical disc 2.

  The opening 229 is continuous with the insertion hole 224 of the guide plate 222, and a caulking pin (not shown) is inserted therethrough. As a result, the centering guide 220 is rotatably supported on the upper surface 6 a of the main chassis 6, and the guide piece 221 rotates to the outer peripheral surface side of the optical disc 2. It can be rotated in the direction of the arrow k2 that is separated from the surface.

  The rotating plate 223 has a cam shaft 233 that is rotated by a rotating piece 82 formed on the rotation support member 71 of the eject arm 52 on the main surface portion 223a. The cam shaft 233 is formed by attaching a caulking pin to the main surface portion 223 a of the rotating plate 223. The centering guide 220 is rotated in the direction of the arrow b1 in which the eject arm 52 pulls the optical disk 2, so that the rotation piece 82 of the rotation support member 71 comes into contact with and presses the cam shaft 233. The guide piece 221 is rotated in the direction of an arrow k2 that is separated from the outer peripheral surface of the optical disc 2 with a caulking pin inserted through the opening 229 as a fulcrum.

  Further, the rotating plate 223 has an engagement piece 231 that is engaged with the rotation support member 71 of the eject arm 52 on the main surface portion 223a. As shown in FIG. 40, the engagement piece 231 is formed at a position higher than the main surface portion 223a by being bent upward from the main surface portion 223a and then bent to the rotation support member 71 side. It extends on the member 71. Thereby, the rotation plate 223 is engaged with the main surface of the rotation support member 71, and the cam shaft 233 and the rotation piece 82 can be brought into contact with each other.

  Further, the rotation plate 223 has a main surface portion 223 a engaged with a centering guide 220 and a tension coil spring 234 that urges the guide piece 221 to rotate in the direction of the arrow k 1 where the guide piece 221 contacts the outer peripheral surface of the optical disk 2. One end of the tension coil spring 234 is locked to the rotating plate 223 and the other end is locked to the main chassis 6, so that the guide piece 221 of the centering guide 220 is always urged to rotate in the direction of the arrow k <b> 1. . Further, the guide piece 221 is urged to rotate in the direction of the arrow k1, whereby the contact wall 221a is pressed against the side edge of the centering guide opening 6h provided in the main chassis 6 to position the guide portion 221b. Figured. The centering guide 220 is positioned by the contact wall 221a being urged by the centering guide opening 6h by the urging force of the tension coil spring 234, whereby the guide 221b is separated from the outer peripheral surface of the optical disc 2. Can be prevented from swinging.

  Next, the centering process of the optical disc 2 using the centering guide 220 will be described. As described above, in the process of inserting and retracting the optical disk 2, the tension coil spring 234 until the cam shaft 233 of the rotating plate 223 is pressed by the rotating piece 82 formed on the rotation support member 71 of the eject arm 52. Due to the urging force, the guide piece 221 is urged to rotate in the direction of the arrow k1, which is the direction of the outer peripheral surface of the optical disc 2, and the outer peripheral surface of the optical disc 2 can be guided by the guide portion 221b.

  Further, the engaging convex portion 64 is guided by the first cam groove 66 of the loading cam plate 53, so that the loading arm 51 pulls the optical disk 2 into the centering position where the center hole 2a is located immediately above the turntable 23a. Specifically, the loading arm 51 is rotated in the direction of the arrow a1 that draws the optical disc 2 by the engagement convex portion 64 being guided by the first guide portion 66a of the first cam groove 66, and is transported to substantially the centering position. . The loading arm 51 is restricted from rotating in the directions of the arrows a1 and a2 by the engagement convex portion 64 being guided by the second guide portion 66b.

  When the optical disk 2 is further transported to substantially the centering position, the deck arm 200 is also pressed by the outer peripheral surface of the optical disk 2 to rotate in the direction of arrow i1. At this time, the deck arm 200 applies an urging force in the direction of the arrow i2 to the arm member 201 with respect to the optical disc 2 by the coil spring 203. This urging force acts on the optical disk 2 from the contact member 205 attached to the arm member 201 in the direction of the turntable 23a. Further, as described above, the urging force is maintained at a constant amount without increasing due to the movement of the spring locking portion 214 accompanying the rotation of the restricting arm 212.

  That is, in the disk drive device 1, when the optical disk 2 is drawn into the housing 3 as shown in FIG. 15, the swinging of the loading arm 51 and the centering guide 220 is restricted, and a constant urging force is applied by the deck arm 200. It acts on the optical disc 2. In the disk drive device 1, the abutting portion 61 of the loading arm 51, the guide piece 221 of the centering guide 220, and the abutting member 205 of the deck arm 200 are centered on the disc mounting portion 23 around the turntable 23 a. The outer peripheral surface of the optical disk 2 is supported at three points. Of the three points, the optical disc 2 is supported in a rigid state in which swinging is restricted at two points of the contact part 61 and the guide piece 221, and the remaining one point is directed toward the turntable 23 a by the contact member 205. Energizing power is given.

  As described above, in the present disk drive device 1, the loading arm 51 that pulls the optical disk 2 up to the disk mounting portion 23 is positioned rigidly according to the centering position of the optical disk 2, so that the optical disk 2 can be reliably centered. it can.

  Further, in the present disk drive device 1, the centering guide 220 is positioned rigidly according to the centering position of the optical disk 2 in addition to the loading arm 51, so that the optical disk 2 can be centered more reliably.

  Furthermore, the present disk drive device 1 uses two of the contact portion 61, the contact member 205, and the guide piece 221 that are substantially evenly arranged around the turntable 23a as a rigid according to the centering position of the optical disc 2, and the rest. By urging the optical disk 2 toward the turntable 23a by one, centering can be performed more reliably. As a result, when the base unit 22 is raised to the chucking position by a slider 122 and a sub-slider 151 described later, the optical disk 2 and the turntable 23a can be chucked smoothly. Therefore, it is possible to eliminate the generation of sound due to chucking in a state where the center hole 2a of the optical disc 2 and the turntable 23a are displaced, and the load on the optical disc 2 or the turntable 23a.

  Here, during centering, if all of the three points of the contact portion 61 that supports the outer peripheral surface of the optical disc 2, the guide piece 221, and the contact member 205 are restricted to rigid, errors in the outer dimensions of the optical disc 2, There is a possibility that the centering position of the optical disk 2 may be shifted due to an accuracy error of each part, and smooth chucking cannot be performed on any optical disk 2. On the other hand, by configuring the abutting member 205 so as to be able to rotate without being rigid, it is possible to absorb the accuracy error of the optical disc 2 and the components, and to reliably center the optical disc 2. it can.

  At this time, the loading arm 51 rotatably supported by the deck portion 4a has a loading cam plate 53 that guides the engaging projection 64 integrated with the slider 122, and the slider 122 is bottomed as described later. By being supported in the sliding direction by the case 4, the positioning is achieved with respect to the main chassis 6 similarly disposed in the bottom case 4 via the loading cam plate 53 and the slider 122. The centering guide 220 is positioned with respect to the main chassis 6 by the guide piece 221 being rotationally biased by the centering guide opening 6 h of the main chassis 6. The base unit 22 provided with the turntable 23a is also supported so as to be movable up and down with respect to the main chassis 6 as will be described later. That is, the loading arm 51 and the centering guide 220 are positioned on the main chassis 6 on the one hand, and the turntable 23a is positioned on the other hand.

  Therefore, the optical disk 2 is centered on the turntable 23a that is also positioned relative to the main chassis 6 by the loading arm 51 and the centering guide 220 that are positioned relative to the main chassis 6, respectively. Therefore, it is reliably centered.

  During centering, the eject arm 52 is guided by the retracting guide wall 112b of the loop cam 57 by the guide convex portion 113 of the second link arm 55 in the step of retracting the optical disc 2, whereby the first link arm 54 is moved. The locking portion 96 and the locking portion 98 formed on the main chassis 6 are brought close to each other, and the tension coil spring 56 is returned from the extended state. At this time, if the eject arm 52 is a slight force with respect to the optical disc 2, the urging force may be applied in the direction of the arrow b2 on the disc mounting portion 23 side. As a result, the disk drive device 1 is also configured with the ejecting arm 52 biased toward the disk mounting unit 23, the loading arm 51 and the centering guide 220 restricted to the centering position of the optical disk 2, 3 around the disk mounting unit 23. By supporting the optical disc 2 at a point, the optical disc 2 can be centered.

  As shown in FIG. 16, when the optical disk 2 is chucked, the centering guide 220 is configured such that the cam shaft 233 formed on the rotation plate 223 by the rotation piece 82 provided on the rotation support member 71 of the eject arm 52. Is pressed, the rotating plate 223 and the guide plate 222 are rotated around the insertion hole 224 against the urging force of the tension coil spring 234, and the guide piece 221 is moved in the arrow k2 direction. As a result, the guide piece 221 separates the guide portion 221 b from the outer peripheral surface of the optical disc 2.

  As described above, the loading arm 51 is rotated in the direction of the arrow a2 by the engagement convex portion 64 being guided by the third guide portion 66c of the first cam groove 66 of the loading cam plate 53, The contact portion 61 is separated from the outer peripheral portion of the optical disc 2. In the deck arm 200, the abutting piece 209 of the pressing plate 202 is pressed against the tip of the loading cam plate 53 in the direction of the arrow f1, so that the arm member 201 biased by the pressing arm 202b rotates in the direction of the arrow i1. Then, the contact member 205 attached to the arm member 201 is separated from the outer peripheral portion of the optical disc 2. As the slider 122 slides, the eject arm 52 is also rotated in the direction of the arrow b1 via the operation arm 58, and the support portion 88 and the pickup portion 90 are separated from the outer peripheral portion of the optical disc 2.

  As a result, the optical disk 2 chucked on the turntable 23 a is released from the arms and the centering guide 220 that support the outer periphery, and can be rotated by the disk rotation drive mechanism 24.

  As shown in FIG. 11, the drive mechanism 120 that supplies a drive force to the disk transport mechanism 50 includes a drive motor 121, a slider 122 that receives the drive force of the drive motor 121 and slides in the bottom case 4, and the drive motor 121. The gear train 123 that transmits the driving force to the slider 122 is provided on the bottom case 4 side of the main chassis 6. The drive mechanism 120 drives the disk transport mechanism 50 and the base lifting mechanism 150 by sliding the slider 122 with the drive motor 121.

  When the optical disk 2 is inserted to a predetermined position and the first switch SW1 is pressed by the rotation support member 71 of the eject arm 52, the drive motor 121 is driven in the forward rotation direction that moves the slider 122 in the arrow f1 direction. The Further, when the ejecting operation is performed, the driving motor 121 is driven in the reverse direction in which the slider 122 is moved in the arrow f2 direction. The slider 122 is moved in the direction of the arrow f1 or f2 in FIG. 11 according to the loading and ejection of the optical disc 2, thereby driving each arm of the disc transport mechanism 50 and the base lifting mechanism 150. The gear train 123 transmits the driving force of the driving motor 121 to the slider 122 via the rack portion 131.

  As shown in FIG. 41, the slider 122 is made of a resin member formed in a substantially rectangular parallelepiped shape as a whole, and the engagement convex portion 109 formed on the third link arm 100 is engaged with the upper surface 122a. A guide groove 125, a second guide groove 126 with which a connecting arm 165 for driving a sub-slider 151 of the base lifting mechanism 150 described later is engaged, and a pair of engaging protrusions 68, 68 formed on the loading cam plate 53. And a third guide groove 128 that engages with one end of an opening / closing arm that restricts double insertion of the optical disc 2 is omitted.

  The slider 122 is engaged with the first cam slit 130 through which the first support shaft 47 protruding from the sub-chassis 29 of the base unit 22 is inserted into the side surface 122 b on the base unit 22 side, and the gear train 123. The rack part 131 to be formed is formed. The first cam slit 130 is assembled with a first guide plate 152 that prevents the first support shaft 47 of the subchassis 29 from rattling and operates the disk rotation drive mechanism 24 stably. The slider 122 is formed with a slide guide groove 129 along the longitudinal direction on the lower surface 122c. The slide guide groove 129 is guided in a sliding direction by a pair of guide protrusions 124, 124 protruding from the bottom case 4 (see FIG. 9). ).

  Such a slider 122 is disposed on the bottom surface portion of the bottom case 4 between the one side surface portion on which the deck portion 4 a of the bottom case 4 is provided and the base unit 22. The slider 122 is positioned below the optical disk 2 inserted into the housing 3 from the disk insertion / removal port 19, and the upper surface of the slider 122 has a slightly lower height than the deck section 4 a. . The slider 122 is covered by the main chassis 6 and is slid and driven in the forward and rearward arrow f1 and f2 directions via a drive motor 121 and a gear train 123 provided on the bottom surface of the bottom case 4. .

  Then, the drive mechanism 120 moves the third link arm 100 and the operation arm 58 engaged with the third link arm 100 in conjunction with the sliding operation of the slider 122 to rotate the eject arm 52. The loading cam plate 53 is moved back and forth, and the loading arm 51 is rotated. Thus, the drive mechanism 120 performs a loading operation for drawing the optical disc 2 into the housing 3 according to the slide of the slider 122 and an ejecting operation for ejecting the optical disc 2 from the disc mounting portion 23 to the outside of the disc insertion / removal opening 19. Do.

  Next, the base lifting mechanism 150 that lifts and lowers the base unit 22 in conjunction with the above-described sliding operation of the slider 122 will be described. The base lifting mechanism 150 raises the base unit 22 and chucks the optical disk 2 centered at the disk mounting position on the turntable 23a of the disk mounting portion 23. The base lifting mechanism 150 lowers the base unit 22 from the turntable 23a. A base unit 22 between a chucking release position where the optical disk 2 is detached and a recording / playback position where the base unit 22 is positioned between the chucking position and the chucking release position and a signal is recorded or reproduced on the optical disk 2. Move up and down.

  Specifically, the base elevating mechanism 150 includes a first support shaft 47 and a second support shaft 48 formed on the base unit 22 by a slider 122 and a sub-slider 151 that is slid according to the slide operation of the slider 122. The base unit 22 is moved up and down by moving it up and down. On the side surface of the slider 122 facing the base unit 22, as shown in FIG. 41, there is a first cam slit 130 in the longitudinal direction that moves the base unit 22 up and down over the chucking release position and the recording / reproducing position. It is formed over. The first cam slit 130 includes a lower horizontal surface portion 130a corresponding to the chucking release position, an upper horizontal surface portion 130b corresponding to the recording / reproducing position, and an inclined surface portion connecting the lower horizontal surface portion 130a and the upper horizontal surface portion 130b. 130c and a mounting portion 130d to which a first guide plate 152 to be described later is attached are formed, and the first support shaft 47 protruding from the sub chassis 29 of the base unit 22 is slidably inserted.

  The first cam slit 130 guides the movement of the first support shaft 47 and prevents the first support shaft 47 from rattling at the recording / reproducing position to stabilize the disk rotation drive mechanism 24. A first guide plate 152 to be operated is disposed. The first guide plate 152 is made of a leaf spring member, and an engagement hole is provided at one end 152a. The engagement hole is engaged with an engagement convex portion protruding from the attachment portion 130d of the first cam slit 130. At the same time, one end 152a is locked to a projecting piece 153 formed from the upper surface 122a of the slider 122 toward the attachment portion 130d. Further, the first guide plate 152 is formed with a locking piece 140 that is locked to a locking portion 154 provided in the first cam slit 130 at the other end 152b. Further, the first guide plate 152 moves the first support shaft 47 when the base unit 22 is raised to the chucking position above the contact point between the upper horizontal surface portion 130b and the inclined surface portion 130c. When the shaft 47 is moved to the upper horizontal surface portion 130b, a protruding portion 155 that protrudes toward the upper surface 122a of the slider 122 is formed.

  Further, the lower horizontal surface portion 130 a of the first cam slit 130 has a height slightly larger than the diameter of the first support shaft 47 and is slidably formed. On the other hand, the height of the upper horizontal surface portion 130 b with the first guide plate 152 is the same as or slightly lower than the diameter of the first support shaft 47. Therefore, when the first support shaft 47 is moved to the upper horizontal surface portion 130b, the first guide plate 152 is pressed into the first horizontal shaft portion 130b, and the first support shaft 47 is moved between the upper horizontal surface portion 130b. Hold it. Therefore, the first guide plate 152 can suppress the vibration by the spindle motor 24a of the disk rotation drive mechanism 24 provided in the base unit 22, and can rotate the optical disk 2 stably.

  Further, the first guide plate 152 holds the first support shaft 47 between the upper horizontal surface portion 130b, so that the protruding portion 155 protrudes on the upper surface 122a of the slider 122 and presses against the upper surface 6a of the main chassis 6. It is done. Therefore, the slider 122 is pressed toward the bottom case 4 by the first guide plate 152 during recording / reproduction of the optical disc 2, and the influence of vibration and disturbance due to driving of the base unit 22 can be suppressed.

  The locking piece 140 formed on the other end 152b of the first guide plate 152 is bent in a direction orthogonal to the longitudinal direction of the slider 122, and a part of the main surface portion of the other end 152b is formed. The other end 152b is formed so as to protrude in a substantially rectangular shape along the bending direction. The locking portion 154 to which the locking piece 140 is locked is provided in front of the upper horizontal surface portion 130b of the first cam slit 130, and extends in the thickness direction from the upper surface 122a of the slider 122 to the side wall 154a in the thickness direction. A slit 154b is provided. Then, as the first guide plate 152 is locked to the first cam slit 130, the other end 152b of the first guide plate 152 faces the side wall 154a and the locking piece 140, as shown in FIG. Is inserted into the slit 154b, and the upper surface 140a of the locking piece 140 can be brought into contact with the upper portion of the slit 154b.

  When the locking piece 140 is inserted into the slit 154b, the first guide plate 152 comes into contact with the upper surface 140a of the locking piece 140 and the upper part of the slit 154b when an impact is applied in the surface direction. Such an impact can be received by the slider 122 via the upper surface 140 a of the locking piece 140. Accordingly, the first guide plate 152 can be prevented from being plastically deformed even when an impact in the surface direction is applied due to a fall accident of the disk drive device 1 or the like.

  In particular, the first guide plate 152 is made of a long elastic member, and there is a risk of plastic deformation in response to a surface impact. Further, when the disk drive device 1 is shipped from the manufacturer or when the electronic device on which the disk drive device 1 is mounted is transported, the packaging is simplified to cope with an impact applied in the event of a fall accident or the like. Although necessary, the first guide plate 152 can be prevented from being deformed by forming the locking piece 140 so as to be locked to the slider 122.

  The sub-slider 151 supports the second support shaft 48 projecting from the sub-chassis 29 of the base unit 22 and is engaged with the slider 122. The sliding direction of the slider 122 causes the loading direction of the optical disk 2 to be changed. It is arranged so as to be slidable in the direction of the arrow h1 or the arrow h2 perpendicular to FIG.

  As shown in FIGS. 11 and 43, the sub-slider 151 is made of a long plate member made of synthetic resin, and a guide convex portion 157 protruding from the main chassis 6 is engaged with the upper surface 151a. An upper guide groove 158 is formed over the longitudinal direction. In the sub-slider 151, a lower guide groove 160 that engages with a guide convex portion 159 protruding from the bottom case 4 is formed in the longitudinal direction at a position partially displaced from the upper guide groove 158 of the lower surface 151c. (See FIG. 9). The sub-slider 151 is engaged with the guide protrusion 157 protruding from the main chassis 6 in the upper guide groove 158, so that the guide protrusion 157 slides in the upper guide groove 158 and the lower guide Since the guide convex portion 159 protruding from the bottom case 4 is engaged with the groove 160, the guide convex portion 159 slides in the lower guide groove 160, so that the arrow h1 is interlocked with the sliding operation of the slider 122. It is slid in the direction or arrow h2.

  Further, the sub-slider 151 has an engaging groove 166 that is engaged with a connecting arm 165 that is connected to the slider 122, at one end in the longitudinal direction located on the slider 122 side. The engagement groove 166 is provided in an engagement piece 167 that extends in a direction orthogonal to the longitudinal direction of the sub-slider 151. Further, the sub-slider 151 has an abutment convex portion whose other end opposite to the one end where the engagement piece 167 is formed abuts against the rotation support member 71 of the eject arm 52 when the optical disk 2 is loaded. 168. As shown in FIG. 16, the abutment convex portion 168 abuts against the bent piece 81 of the rotation support member 71 when the optical disc 2 is loaded, thereby releasing the pushing arm 72 from the side surface of the optical disc 2. The rotation support member 71 is rotated in the direction, and the rotation of the rotation support member 71 is restricted so that the push arm 72 rotated to a position away from the side surface of the optical disk 2 does not rotate in the side surface direction of the optical disk 2. Accordingly, the sub-slider 151 maintains a state in which the push-out arm 72 of the eject arm 52 is released from the side surface of the optical disc 2.

  The sub-slider 151 is moved to the side surface 151b on the disk insertion / removal port 19 side together with the first cam slit 130 to move the base unit 22 up and down over the chucking position, chucking release position, and recording / reproducing position. The cam slit 170 is formed in the longitudinal direction. The second cam slit 170 connects the lower horizontal surface portion 170a corresponding to the chucking release position, the upper horizontal surface portion 170b corresponding to the recording / reproducing position, and the lower horizontal surface portion 170a and the upper horizontal surface portion 170b. An inclined surface portion 170c corresponding to the king position and an attachment portion 170d to which a second guide plate 171 to be described later is attached are formed, and the second support shaft 48 protruding from the sub chassis 29 of the base unit 22 is slidable. Is inserted.

  The inclined surface portion 170c of the second cam slit 170 is provided to a position higher than the position of the upper horizontal surface portion 170b, and guides the base unit 22 to the upper horizontal surface portion 170b by descending slightly. As a result, the base unit 22 guided by the second cam slit 170 moves the sub-slider 151 in the direction of the arrow h1, so that the second support shaft 48 moves up the inclined surface 170c from the lower horizontal surface 170a. It is moved from the king release position to the chucking position. At this time, the base unit 22 sandwiches the periphery of the center hole 2a of the optical disc 2 centered on the disc mounting portion 23 between the turntable 23a and the abutting protrusion 8 provided on the top plate portion 5a of the top cover 5. Is chucked. When the sub-slider 151 is further slid in the direction of the arrow h1, the second support shaft 48 is lowered from the inclined surface portion 170c to the upper horizontal surface portion 170b, so that the base unit 22 is moved from the chucking position to the recording / reproducing position.

  Similarly to the first cam slit 130, the second cam slit 170 guides the movement of the second support shaft 48 and prevents rattling of the second support shaft 48 at the recording / reproducing position. Thus, a second guide plate 171 for stably operating the disk rotation driving mechanism 24 is provided. The second guide plate 171 is made of a leaf spring member, and an engagement hole is provided at one end 171a. The engagement hole is engaged with an engagement convex portion protruding from the attachment portion 170d of the second cam slit 170. At the same time, one end 171a is locked to a projecting piece 173 formed from the upper surface 151a of the sub-slider 151 toward the mounting portion 170d. Further, the second guide plate 171 is formed with a locking piece 175 that is locked to a locking portion 174 provided in the second cam slit 170 at the other end 171b. The second guide plate 171 moves the second support shaft 48 when the base unit 22 is raised to the chucking position above the contact point between the upper horizontal surface portion 170b and the inclined surface portion 170c. When the shaft 48 is moved to the upper horizontal surface portion 170b, a protruding portion 176 that protrudes toward the upper surface 151a side of the sub-slider 151 is formed.

  Further, the lower horizontal surface portion 170 a of the second cam slit 170 has a height slightly larger than the diameter of the second support shaft 48 and is slidably formed. On the other hand, the height of the upper horizontal plane portion 170 b is the same as or slightly lower than the diameter of the second support shaft 48 with respect to the second guide plate 171. Therefore, when the second support shaft 48 is moved to the upper horizontal surface portion 170b, the second guide plate 171 is pressed into the second support shaft 48 so that the second support shaft 48 is interposed between the upper horizontal surface portion 170b. Hold it. Therefore, the second guide plate 171, together with the first guide plate 152, suppresses vibrations caused by the spindle motor 24 a of the disk rotation drive mechanism 24 provided in the base unit 22, and stably rotates the optical disk 2. Can do.

  Further, the second guide plate 171 holds the second support shaft 48 between the upper horizontal surface portion 170b, so that the protruding portion 176 protrudes on the upper surface 151a of the sub-slider 151, and on the upper surface 6a of the main chassis 6. Pressed. Therefore, the sub-slider 151 is pressed toward the bottom case 4 by the second guide plate 171 during recording / reproduction of the optical disc 2, and the influence of vibration and disturbance due to driving of the base unit 22 can be suppressed.

  The locking piece 175 formed on the other end 171b of the second guide plate 171 is bent at the other end 171b in a direction perpendicular to the longitudinal direction of the sub-slider 151, and a part of the main surface portion of the other end 171b. Is formed so as to protrude forward in the longitudinal direction in a substantially rectangular shape along the bending direction of the other end 171b. Further, as shown in FIGS. 43 and 44, the locking portion 174 to which the locking piece 175 is locked is provided in front of the upper horizontal surface portion 170b of the second cam slit 170, and from the upper surface 151a of the sub-slider 151. A slit 174b extending in the thickness direction is provided on the side wall 174a in the thickness direction. Then, when the second guide plate 171 is locked to the second cam slit 170, the other end 171b of the second guide plate 171 faces the side wall 174a and the locking piece 175 is inserted into the slit 174b. The upper surface 175a of the locking piece 175 can be brought into contact with the upper portion of the slit 174b.

  When the engaging piece 175 is inserted into the slit 174b, the second guide plate 171 is brought into contact with the upper surface 175a of the engaging piece 175 and the upper part of the slit 174b when an impact is applied in the surface direction. Such an impact can be received by the sub-slider 151 via the upper surface 175a of the locking piece 175. Accordingly, like the first guide plate 152, the second guide plate 171 can prevent plastic deformation even when an impact in the surface direction is applied due to a drop accident of the disk drive device 1 or the like.

  A connecting arm 165 that engages with the engaging groove 166 of the sub slider 151 and connects the slider 122 and the sub slider 151 has a support portion 165a provided at a substantially intermediate portion thereof rotatably attached to the main chassis 6. At the same time, the engagement convex portion 177 formed at one end 165b of the support portion 165a is movably engaged with the second guide groove 126 of the slider 122, and the engagement convex portion 178 formed at the other end 165c is sub-shaped. The slider 151 is movably engaged with the engaging groove 166 of the slider 151.

  As shown in FIG. 15, when the slider 122 is moved in the direction of the arrow f1, the connecting arm 165 moves the second guide groove 126 of the slider 122 to move the support portion 165a. The sub-slider 151 is slid in the direction of the arrow h1 while being rotated in the direction of the arrow l1 around the fulcrum, and the engaging convex portion 178 moves in the engaging groove 166. In addition, when the slider 122 is moved in the direction of the arrow f2, the connecting arm 165 moves as shown in FIG. 18 by the engagement convex portion 177 moving in the second guide groove 126, so that the support portion 165a serves as an arrow. The sub-slider 151 is slid in the direction of the arrow h2 while being rotated in the l2 direction and the engaging convex portion 178 moves in the engaging groove 166.

  As shown in FIGS. 3 and 45, the disk drive device 1 includes a central hole 2a of the optical disk 2 conveyed to the centering position by the disk conveying mechanism 50 when the base unit 22 is raised to the chucking position. A guide pin 180 for guiding the base unit 22 is provided so that the disc mounting portion 23 provided in the base chassis 27 is aligned with the turntable 23a.

  As shown in FIG. 45, the guide pin 180 is erected from the bottom surface portion of the bottom case 4, and a flange portion 182 through which the guide hole 181 formed in the base chassis 27 is inserted is formed in the upper portion. The flange portion 182 has a diameter that is slightly larger than the diameter of the guide hole 181 of the base chassis 27, and includes a first guide portion 183 having an inclined surface that increases in diameter toward the upper end portion, and toward the upper end portion. A second guide portion 184 having an inclined surface with a reduced diameter is formed. The flange portion 182 is inserted into the guide wall 185 formed in the guide hole 181 while the first and second guide portions 183 and 184 are in sliding contact with each other when the base chassis 27 is moved up and down. The unit 22 is guided to the chucking position or the chucking release position.

  The guide hole 181 of the base chassis 27 through which the guide pin 180 is inserted is drilled in the vicinity of the turntable 23 a that is away from the third support shaft 49 that is the pivot point of the base unit 22. In the guide hole 181, as shown in FIG. 45, a guide wall 185 bulges out at the lower part of the base chassis 27. The guide wall 185 forms a clearance slightly larger than the diameter of the flange portion 182 of the guide pin 180, and the flange portion 182 passes through this clearance, so that the center hole 2 a of the optical disc 2 and the turntable of the disc mounting portion 23 are inserted. The base unit 22 is guided so as to be aligned with 23a.

  Specifically, as shown by a two-dot chain line in FIGS. 46 and 45A, when the base unit 22 is lowered to the chucking release position, the guide pin 180 has the flange portion 182 at the guide hole 181. It is located above. When the optical disk 2 is conveyed to the centering position, the base chassis 27 is raised, and the flange portion 182 is inserted through the guide hole 181. When the base chassis 27 is raised to the chucking position of the optical disc 2, the guide wall 185 bulging in the guide hole 181 is formed as a guide pin 180 as shown by the solid line in FIGS. The first guide portion 183 is slid, and the flange portion 182 passes through the clearance between the guide walls 185. As described above, the base chassis 27 is raised while being guided by the guide pins 180, whereby the turntable 23a of the disk mounting portion 23 is aligned with the center hole 2a of the optical disk 2 conveyed to the centering position. Therefore, the chucking can be performed smoothly without applying an excessive load to the optical disc 2 or the turntable 23a.

  Further, the guide pin 180 and the guide hole 181 are on the other end side opposite to one end in the longitudinal direction where the third support shaft 49 for supporting the rotation of the base unit 22 is provided, and in the vicinity of the disc mounting portion 23. Therefore, the deviation between the optical disk 2 conveyed to the centering position and the turntable 23a can be corrected most efficiently, and the relationship between the center hole 2a of the optical disk 2 and the turntable 23a can be surely achieved. The alignment with the mating protrusion 33a can be performed.

  48 and 45C, when the base unit 22 is lowered to the recording / reproducing position, the guide wall 185 of the guide hole 181 of the base chassis 27 is moved to the second portion of the flange portion 182. After the guide portion 184 slides and the flange portion 182 is guided to be inserted into the guide hole 181, the guide wall 185 is lowered to a position away from the flange portion 182. Thus, in the state where the base unit 22 is lowered to the recording / reproducing position, the guide pin 180 and the guide hole 181 are not in contact with each other, and therefore, the vibration from the bottom case 4 to the base chassis 27 side through the guide pin 180. And the like are prevented from being transmitted. Therefore, it is possible to prevent disturbance from being transmitted to the disk rotation driving mechanism 24 and the optical pickup 25 through the guide pins 180 and adversely affecting the recording / reproducing characteristics.

  The guide pin 180 is formed to a height that does not contact the lower surface of the optical disk 2 that is rotationally driven by the disk rotation drive mechanism 24, and there is no possibility of damaging the information recording surface of the optical disk 2.

  When the recording / reproducing operation is completed and the optical disk 2 is ejected, the base unit 22 is lowered to the chucking release position, and the optical disk 2 is pushed up from the turntable 23a by the guide pins 180, whereby the chucking is released. At this time, the base chassis 27 has the guide hole 181 positioned below the guide pin 180.

  In the disk drive device 1 to which the present invention is applied, the guide pin 180 also functions as a chucking release pin that releases chucking of the optical disk 2. That is, the guide pin 180 has a hemispherical upper end, and the guide pin 180 and the guide hole 181 of the base chassis 27 are formed in the vicinity of the center hole 2a of the optical disc 2 mounted on the turntable 23a. It is formed corresponding to the region. Thereby, when the base unit 22 is lowered to the chucking release position of the optical disc 2, the optical disc 2 is pushed up by the upper end portion of the guide pin 180, and the chucking with the turntable 23a is released. According to such a configuration, it is not necessary to use a chucking release pin for releasing chucking of the optical disk 2 in addition to the guide pins 180, so that the number of parts can be reduced and the disk drive device 1 can be reduced in weight. it can.

It is an external appearance perspective view which shows the electronic device by which the disc drive apparatus to which this invention was applied is mounted. 1 is an external perspective view showing a disk drive device to which the present invention is applied. 1 is a perspective view showing the inside of a disk drive device to which the present invention is applied. It is a perspective view which shows the disk drive apparatus which removed the main chassis. It is an external appearance perspective view which shows a top cover. It is a perspective view which shows a base unit. It is sectional drawing which shows the connection location of a base chassis and a subchassis. It is a figure for demonstrating the support structure by the damper between a base chassis and a subchassis in a base unit. It is a perspective view which shows the other example of a disk drive apparatus. It is sectional drawing which shows the other example of a disk drive apparatus. It is a top view which shows the disk drive apparatus which waits for insertion of an optical disk. It is a top view which shows the disc drive apparatus which moves to insertion operation from insertion operation. It is a top view which shows the disc drive apparatus which started drawing of the optical disc with the loading arm. It is a top view which shows the disk drive apparatus which has drawn in the optical disk. It is a top view which shows the disc drive apparatus which pulled in the optical disc to the centering position. It is a top view which shows the disk drive apparatus which is recording / reproducing with respect to an optical disk. FIG. 11 is a plan view showing a disk drive device that supports the side surface of the disk with various arms in an optical disk ejection process. It is a top view which shows the disk drive apparatus which discharges | emits an optical disk. It is a top view which shows the disc drive apparatus which conveyed the optical disk to the discharge position. It is a perspective view which shows a loading arm. It is a top view which shows a loading arm. It is a perspective view which shows a loading cam plate, (a) shows the surface side, (b) is a figure which shows a back surface side. It is a disassembled perspective view which shows an eject arm. It is a perspective view which shows an eject arm. FIG. 11 is a plan view for explaining the operation of the eject arm when there is an obstacle on the disc conveyance area in the disc ejection process. It is a perspective view which shows another eject arm. It is a perspective view which shows another eject arm from the back surface side. It is a perspective view which shows the support plate used for another eject arm. It is a figure which shows the pick-up arm of a 2nd pick-up part. It is a perspective view which shows a disk drive apparatus provided with another eject arm. It is a perspective view which shows the 2nd extrusion arm which supports an optical disk with a 2nd pick-up part. It is a perspective view which shows the 2nd extrusion arm which guides an optical disk with a 2nd pick-up. It is a perspective view which shows the latching | locking part which is provided in a main chassis and the one end part of a tension | pulling coil spring is latched. It is a figure which shows a loop cam plate, (a) is a perspective view shown from the attachment surface side to a main chassis, (b) is a perspective view shown from the formation surface side of a guide groove. It is a top view which shows the movement path | route of the guide convex part in a loop cam. It is a top view which shows the disc drive apparatus which prevents the erroneous insertion of a small diameter disc with an eject arm. It is a perspective view which shows a deck arm and a control arm. It is a top view which shows the disc drive apparatus which prevents the erroneous insertion of a small diameter disc with a deck arm. It is a disassembled perspective view which shows a centering guide. It is a perspective view which shows a centering guide. It is a perspective view which shows a 1st guide plate and a slider. It is a perspective view which shows the slider with which the 1st guide plate was latched. It is a perspective view which shows a 2nd guide plate and a sub slider. It is a perspective view which shows the sub slider with which the 2nd guide plate was latched. It is sectional drawing which shows the positional relationship of a guide pin and a guide hole, (a) is a chucking release position, (b) is a disc mounting position, (c) is a figure which shows each positional relationship in a recording / reproducing position. It is a perspective view showing a guide pin and a guide hole in a state where the base unit is lowered to the chucking release position. It is a perspective view showing a guide pin and a guide hole in a state where the base unit is raised to the chucking position. It is a perspective view showing a guide pin and a guide hole in a state where the base unit is raised to the recording / reproducing position.

Explanation of symbols

1 disk drive device, 2 optical disk, 3 housing, 4 bottom case, 5 top cover, 6 main chassis, 17 edge part, 18 front panel, 19 disk insertion / removal port, 22 base unit, 23 disk mounting part, 23a turntable, 25 optical pickup, 27 base chassis, 28 damper, 29 subchassis, 47 to 48 support shaft, 50 disk transport mechanism, 51 loading arm, 52 eject arm, 53 loading cam plate, 54 first link arm, 55 second Link arm, 56 tension coil spring, 57 loop cam, 58 operation arm, 60 insertion hole, 61 contact portion, 63 rotation support member, 66 first cam groove, 71 rotation support member, 72 push-out arm, 73 coil spring, 82 rotation , 88 support section, 90 pickup section, 96, 98 locking section, 100 third link arm, 101 small-diameter disk, 108 cam groove, 112 cam groove, 112a insertion guide wall, 112b pull-in guide wall, 112c discharge guide wall, 113 Guide convex part, 120 Drive mechanism, 122 Slider, 130 First cam slit, 140 Locking piece, 150 Base lifting mechanism, 151 Sub slider, 152 First guide plate, 154 Locking part, 165 Connecting arm, 170 Second cam slit, 171 Second guide plate, 180 guide pin, 200 deck arm, 201 arm member, 202 pressing plate, 203 coil spring, 212 regulating arm, 214 spring locking portion, 220 centering guide, 221 guide piece, 222 Guide plate, 223 Rotating plate, 234 tension coil spring, 240 second push-out arm, 241 pickup support section, 250 second pickup section, 251 pickup arm

Claims (6)

An apparatus main body provided with a rectangular disk insertion / removal port through which a disk is inserted / removed on the front side;
A disk holding unit provided in the apparatus main body and rotatably holding the disk;
An arm part having a fulcrum part on the back side of the main body of the apparatus with respect to the disk holding part and rotatably supported on the disk insertion / removal side, and an insertion direction of the disk formed at the tip of the arm part A support arm for supporting the front side surface, and a support arm for supporting the disk conveyed to the disk holding section;
A biasing member that pivotally biases the support arm toward the disk insertion / removal side;
A moving member that moves the fulcrum of the urging member in accordance with the conveyance of the disk to the disk holding unit,
The biasing member is a coil spring, one end is locked to the arm portion, the other end is locked to the moving member,
The disk drive apparatus according to claim 1, wherein the moving member has a locking portion of the coil spring moved in the same direction as the transport direction of the disk.   2. The disk drive device according to claim 1, wherein the moving member moves a fulcrum of the urging member in a rotation direction of the support arm when the support arm is rotated.   3. The disk drive device according to claim 1, wherein the support arm, the moving member, and the biasing member are provided on a deck portion of the device main body. A first centering member provided on one side in a plane parallel to the disk held by the disk holding portion in a direction orthogonal to the disk insertion / removal direction of the apparatus main body, and supporting the side surface of the disk;
On the other side in a plane parallel to the disk held by the disk holding part in a direction perpendicular to the insertion / removal direction of the disk of the apparatus main body, the apparatus main body can be rotated to the front side of the apparatus main body from the disk holding part. A second centering member that is provided and supports a side surface on the back side in the insertion direction of the disc,
The support arm supports the outer periphery of the disk at three points around the disk holding part together with the first centering member and the second centering member when the disk is pulled into the apparatus main body. The disk drive device according to claim 1, wherein the disk drive device is a disk drive device. A cam plate that rotates the second centering member in response to a driving force of a driving mechanism that is activated by inserting the disc;
5. The disk drive device according to claim 4, wherein the moving member is operated by the cam plate.   The support arm can be brought into contact with a small-diameter disk that has been erroneously inserted by rotating the support portion toward the disk insertion / removal opening side by the biasing member during standby for insertion of the disk. 6. The disk drive device according to claim 1, wherein the disk drive device is a disk drive device.

Images