JP2010067303A - Disk driving device and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize the position of a loading arm in an insertion standby state of an optical disk. <P>SOLUTION: The disk driving device includes: a device body 3 into/from which a disk 2 is inserted/ejected; an arm body 51a rotatably supported on a support point part 63 disposed on one side within a plane parallel to the disk 2 in a direction orthogonal to the insertion/ejection direction of the disk 2 of the device body 3; a support part 61 for supporting the rear side face of the disk 2, in the insertion direction, disposed in the tip of the arm body 51a, a loading arm 51 rotated in the insertion direction to pull the disk 2 into the device body 3 when the disk 2 is inserted and rotated in the ejection direction when the disk 2 is ejected; and a holding member 70 for holding, when the disk 2 is inserted, the arm body 51a in a rotatable insertion standby position toward the side face of one side of the device body 3 by the support part 61 pressed by the outer periphery of the disk 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disk drive device for recording and / or reproducing information signals to and from an optical disk, and in particular, a so-called slot-in type disk drive device that is automatically mounted by directly inserting an optical disk into the device body. The present invention also relates to an electronic device equipped with this disk drive device.

  Conventionally, optical disks such as CD (Compact Disk) and DVD (Digital Versatile Disk) BD (Blu-ray Disk), magneto-optical disks such as MO (Magneto optical) and MD (Mini Disk) have been widely known as optical disks. Various disk drive devices corresponding to these disks and disk cartridges 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. Then, there are a type in which the disc is automatically mounted on the turntable inside the housing when the disc tray is pulled in, or a type in which the disc is directly mounted on the turntable provided in the disc tray. 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. Accordingly, there is an increasing demand for reduction in size, weight, and thickness of the disk drive device. . Against this background, in the slot-in type disk drive device, a contact part that contacts the outer peripheral part of the disk inserted from the disk insertion / removal port of the front panel is provided at the front end part, and the base end part can be rotated. A plurality of supported rotating arms are arranged, and while the rotating arms are rotated in a plane parallel to the disk, a loading operation of pulling the disk from the disk insertion / removal opening into the housing and the disk to the disk 2. Description of the Related Art A disk drive device that performs an ejection operation for discharging from an insertion / removal port to the outside of a housing is provided (see, for example, Patent Document 1). 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 these rotating arms in a plane parallel to the disk, generally, FIG. As shown in FIG. 2, a loading arm for retracting the disc and an eject arm for ejecting the disc are connected to one drive source via a link mechanism. Each loading arm and eject arm are rotated in conjunction with the drive source and the link mechanism when the disk is inserted and ejected to carry the disk.

  A loading arm 300 shown in FIG. 39 has an arm body 302 that is rotatably supported on one side in a direction orthogonal to the insertion direction of the optical disc 301. A support portion 303 that supports the outer peripheral surface of the optical disc 301 is provided at the tip of the arm main body 302. Further, the arm main body 302 is provided with a guide convex portion 304, and the guide convex portion 304 is engaged with the guide groove 306 of the loading cam plate 305. The loading arm 300 is urged in the direction of the arrow a1 in FIG. 39 by drawing the optical disc 301 into the housing 307 by a leaf spring 308 attached to the housing 307.

  The loading cam plate 305 rotates the loading arm 300, is supported so as to be slidable in the front-rear direction of the housing 307, and is connected to the slider 309. The loading cam plate 305 is slid forward and backward with respect to the housing 307 together with the slider 309. As a result, the loading cam plate 305 guides the guide convex portion 304 of the loading arm 300 with the guide groove 306 and rotates it in the directions of arrows a1 and a2 in FIG.

  In the loading arm 300, when the optical disc 301 is inserted, the support portion 303 is pressed by the outer peripheral surface of the optical disc 301 and rotates in the direction of the arrow a <b> 2 toward the side surface of the housing 307. It is slid in contact with. The loading arm 300 is rotated in the direction of the arrow a <b> 1 by the guide convex portion 304 being guided by the guide groove 306 as the loading cam plate 305 slides. As a result, the loading arm 300 presses the side surface on the back side in the insertion direction of the optical disc 301 and pulls it into the housing 307.

  Here, in the disk drive device shown in FIG. 39, when waiting for the insertion of the optical disk, the engagement of the guide convex portion 304 of the loading arm 300 and the guide groove 306 of the loading cam plate 305 is disengaged. The loading arm 300 is held at a predetermined insertion standby position by the urging force of the leaf spring 308. Therefore, if variation occurs in the biasing force of the leaf spring 308 or the sliding position of the slider 309, the position of the loading arm 300 in the insertion standby state is not stable, and the danger of being held at an excessively rotated position in the arrow a1 direction. There is.

  That is, if the loading arm 300 is held at a position that is excessively rotated in the direction of the arrow a1, the support portion 303 is pressed in the direction of the arrow a1 by the optical disc 301, thereby preventing insertion of the optical disc 301 and risk of damage. Arise.

JP 2008-4212 A

  Therefore, the present invention stabilizes the position of the loading arm in the optical disk insertion standby state and can reliably rotate the side of the housing when the optical disk is inserted, and an electronic device on which the disk drive apparatus is mounted. The purpose is to provide equipment.

  In order to solve the above-described problems, a disk drive device according to the present invention includes a device main body into which a disk is inserted and removed, and an in-plane parallel to the disk in a direction perpendicular to the disk insertion / removal direction of the device main body. An arm body that is rotatably supported by a fulcrum provided on one side of the disk, and a support that supports a side surface on the back side in the insertion direction of the disk provided at the tip of the arm body. When the disc is inserted, the disc is rotated in the insertion direction to pull the disc into the apparatus main body, and when the disc is ejected, the loading arm is rotated in the ejection direction. And a holding member that holds the arm body at an insertion standby position that is rotatable toward the one side surface of the apparatus body. It is intended.

  An electronic device according to the present invention includes a device main body provided with a disk insertion / removal port, and a disk drive device disposed in the device main body, into which a disk is inserted / removed via the disk insertion / removal port, The disk drive device is rotated by a device main body into which the disk is inserted and removed, and a fulcrum provided on one side in a plane parallel to the disk in a direction perpendicular to the disk insertion / removal direction of the device main body. There is an arm body that is freely supported, and a support portion that is provided at the tip of the arm body and supports a side surface on the back side in the insertion direction of the disk, and is rotated in the insertion direction when the disk is inserted. The disk is pulled into the main body of the apparatus, and when the disk is ejected, a loading arm that is rotated in the ejecting direction, and when the disk is inserted, the outer periphery of the disk supports the support. By parts are pressed, and a holding member for holding the arm body rotatable insertion standby position toward a side surface of the one side of the apparatus main body.

  According to the present invention, in the disk insertion standby state, when the loading arm is held by the holding member and the support portion is pressed against the outer peripheral surface of the disk, the arm main body is rotated in the lateral direction on one side of the apparatus main body. Held in position. Therefore, when the disc is inserted, it is possible to reliably prevent the arm main body from rotating in the direction opposite to the one side surface of the apparatus main body.

  Hereinafter, a disk drive device and an electronic apparatus 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 ( Information signals can be recorded / reproduced with respect to the optical disc 2 (Blu-ray Disc).

<Case configuration>
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.

  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 that draws an optical disk 2 to be described later into the housing 3, and a deck arm 200 that prevents erroneous insertion of a small-diameter optical disk having a diameter of 8 cm, for example, and that centers a large-diameter optical disk 2 having a diameter of 12 cm, for example. In addition, a regulation arm 212 for controlling the urging force of the deck arm 200 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.

  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 6 a is adjacent to the base unit 22 and has a side edge facing the disk insertion / removal port 19 as an edge portion 17 on which a pickup portion 90 provided on an eject arm 52 described later slides.

  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 6f on the side plate portions 6b on both sides and a through hole 6g for fixing to the bottom case 4 (see FIG. 9). 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.

<Base unit>
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.

  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 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.

  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

<Disc transport mechanism>
As shown in FIGS. 10 to 18, the disk drive device 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 disk 2 is ejected, the disc transport mechanism 50 is guided in the ejection direction of the optical disc 2 by the guide convex portion 113 of the second link arm 55 being guided by the loop cam 57. When the first link arm 54 of the rotation support member 71 of the ejection arm 52 is moved in the same direction as the rotation direction of the engagement hole 80 with which the first link arm 54 is engaged, the ejection force is not exerted by the tension coil spring 56. The arm 52 is rotated to eject the optical disc 2.

  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.

<Loading arm>
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. 19 and 20, 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. 20, the optical disk 2 is loaded onto the deck portion 4a with the rotation support shaft 63 as a fulcrum by engaging the 60 with a substantially cylindrical rotation support shaft 63 protruding 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 FIG. 20 while moving along the insertion hole 60. As a result, the loading arm 51 absorbs the deviation of the rotation timing generated between the ejection arm 52 and the ejecting arm 52 according to the stroke of the slider 122 in the insertion / retraction process and the ejection process of the optical disk 2, thereby smoothly inserting the optical disk 2. It can be discharged.

  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 61 a that supports the outer periphery of the optical disc 2 is rotatably attached to the contact portion 61. The rotating roller 61a is made of resin, 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 both ends thereof are enlarged flange portions so that the height of the optical disc 2 is increased. It has a substantially hourglass shape that restricts movement in the vertical 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. 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 the urging force of the leaf spring 62 is regulated by the engagement convex portion 64 moving along the first cam groove 66 of the loading cam plate 53.

<Loading cam plate>
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. The control arm 212 that controls the urging force of the loading arm 51 and the deck arm 200 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.

  In the loading cam plate 53, as shown in FIGS. 21A and 21B, the engagement convex portion 64 protruding from the loading arm 51 and the rotation guide portion 215 of the restriction arm 212 are inserted. 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 the rotation support pin 217 that is rotatably supported (FIG. 18).

  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. 10 and 20, 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. A third guide portion 66b formed continuously with the guide portion 66b guides the engaging projection 64 to rotate in the direction of arrow a2 in FIG. 10 where the loading arm 51 is separated 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 and 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.

<Holding piece>
The loading cam 51 is inserted into the first cam groove 66 at a position facing the first guide portion 66a in a state where the loading cam plate 53 moves toward the disk insertion / removal port 19 in the waiting state for insertion of the optical disk 2. A holding piece 70 is formed to be held at the insertion standby position. The holding piece 70 is formed so as to extend on the rotation region of the engagement convex portion 64, and the rotation of the arm main body 51 a is restricted by the contact of the engagement convex portion 64, and the loading arm 51 is placed in a predetermined waiting state for insertion. Hold in position.

  The holding piece 70 can adjust the insertion standby position of the loading arm 51 by adjusting the width W of the first cam groove 66. That is, the loading arm 51 is always rotated in the direction of the arrow a1 in FIG. 22 by the plate spring 62, and the engaging convex portion 64 is urged to rotate toward the outside of the housing 3. And since the holding piece 70 is extended on the rotation area | region of the engagement convex part 64, the contact side 70a with which the engagement convex part 64 of the holding piece 70 contacts, and the penetration hole 60 of the arm main body 51a, and The rotation angle of the loading arm 51 is defined according to the width W of the load arm 51. The width W can be appropriately designed depending on, for example, the width dimension of the holding piece 70, the dimension of the loading cam plate 53, or the arrangement of the loading cam plate 53 and the loading arm 51 on the deck portion 4a.

  As described above, the disk drive device 1 forms the holding piece 70 on the loading cam plate 53 that restricts the rotation of the loading arm 51, thereby interlocking with the sliding of the loading cam plate 53, Can be regulated.

  Further, the holding piece 70 has a contact side 70a extending in parallel with the sliding direction of the loading cam plate 53, so that when the sliding position of the loading cam plate 53 varies as shown in FIG. In addition, the loading arm 51 can be reliably projected over the rotation region of the engaging convex portion 64 and held at a predetermined insertion standby position.

  The loading standby position of the loading arm 51 defined by the holding piece 70 means that the engaging convex portion 64 is brought into contact with the holding piece 70 in the insertion standby state of the optical disc 2 so that the contact portion 61 is moved to the optical disc 2. Is the position where the arm body 51a is rotated in the direction of arrow a2 in FIG. The loading arm 51 is pivotally held at such an insertion standby position to prevent a situation where the arm body 51a is pivoted in the direction of the arrow a1 and the optical disc 2 cannot be inserted by being pressed against the optical disc 2. The arm body 51a and the contact portion 61 can be prevented from being damaged.

  Here, as shown in FIG. 24, the angle formed by the line L connecting the rotation fulcrum of the loading arm and the abutting portion with which the outer peripheral surface of the optical disc abuts and the insertion direction D of the optical disc is defined as the angle of the loading arm. The rotation angle is defined as θ3. In the conventional disk drive device, in the optical disk insertion standby state, the loading arm insertion standby position is not fixed. Therefore, when the rotation angle θ3 of the loading arm shown in FIG. There is a possibility that the contact portion is pressed against the outer peripheral surface of the optical disk and rotated in the direction of arrow a1 in FIG.

  When the rotation angle θ3 of the loading arm is about 42 °, the normal line N connecting the center of the disk and the contact portion of the loading arm and the line connecting the rotation fulcrum of the loading arm and the contact portion. L overlaps. At this time, the pressure angle θ1 at the contact point between the outer peripheral surface of the optical disk and the contact portion of the loading arm is 90 °, and the loading arm is rotated in the direction of arrow a2 in FIG. 24 depending on the insertion speed and angle of the disk by the user. This prevents the smooth insertion of the optical disc and damages the loading arm.

  Therefore, in the disk drive device 1, the insertion standby position of the loading arm 51 in the optical disk 2 insertion standby state is restricted, and for example, as shown in FIG. 25, the rotation angle θ3 of the loading arm 51 is smaller than approximately 42 °. In this manner, the engaging projection 64 is brought into contact with the holding piece 70 to restrict the rotation of the arm body 51a. In FIG. 25, the rotation angle θ3 of the loading arm 51 is set to 22 °. Therefore, the disc drive apparatus 1 can prevent the loading arm 51 from rotating in the direction of the arrow a1 when the optical disc 2 is inserted, can reliably insert the optical disc 2, and can prevent the loading arm 51 from being damaged. .

  Further, in the disk drive device 1, as shown in FIG. 26, the rotation angle θ3 of the loading arm 51 may be formed to be 2 ° or more. When the rotation angle θ3 is set to 2 °, the loading arm 51 has been previously rotated in the direction of the arrow a2 in FIG. 26, so that when the outer peripheral surface of the optical disc 2 is pressed, It is reliably rotated in the same direction.

  Note that when the rotation angle θ3 of the loading arm 51 is smaller than 2 °, the disk drive device 1 uses the contact portion 61 of the loading arm 51 until the optical disk 2 is inserted into the housing 3 by the user. The outer peripheral surface is not supported. Therefore, if the rotation angle θ3 of the loading arm 51 is less than 2 °, the signal recording surface of the optical disk 2 may be in sliding contact with the main chassis 6 in the disk drive device 1 and the recording / reproduction quality may be affected.

  Further, in the disk drive device 1, when the rotation angle θ3 of the loading arm 51 is smaller than 2 °, the contact portion 61 at the insertion standby position is separated from the optical disk 2 inserted in the housing 3. Therefore, when the loading arm 51 is rotated in the direction of the arrow a1, the abutment portion 61 collides with the back side in the insertion direction of the optical disc 2, and the operation feeling is such that it is pulled forcibly.

  Therefore, the disk drive device 1 cannot adopt a configuration in which the rotation angle θ3 of the loading arm 51 is smaller than 2 °.

  Further, in the disk drive device 1, the loading arm 51 may be formed so that the rotation angle θ3 is 2 ° or more and 10 ° or less. By setting the rotation angle θ3 of the loading arm 51 within such a range, the force required to insert the optical disc 2 can be reduced and smooth insertion can be realized.

  Here, in FIG. 25, a straight line orthogonal to the tangent at the contact position of the contact portion 61 of the optical disk 2 is referred to as a disk normal, and the definition of each symbol shown in FIG. 25 is shown below.

F1: Force of loading arm 51 (= biasing force of leaf spring 62)
F2: Reaction force of loading arm 51 (force required to rotate in the direction of arrow a2)
(F1 = F2)
F3: Force in the disk normal direction necessary to obtain the vector F2 (F2 is the component force of F3)
F4: Component force of F3 toward the loading arm 51 F5: Force in the insertion direction of the optical disc 2 F6: Force in a direction orthogonal to the insertion direction of the optical disc 2 θ1: Angle formed by the disc normal and the perpendicular of the loading arm 51 θ2 : Angle of F3 from the direction orthogonal to the insertion direction of the optical disk 2 θ3: In the optical disk 2 waiting to be inserted, a line passing through the rotation support member 63 and the contact portion 61 serving as a fulcrum of the loading arm 51 and the optical disk 2 Angle formed by the insertion direction (rotating angle of the loading arm 51)
When the force in the insertion direction of the optical disk 2 necessary for generating the force of the vector F3 is obtained, the larger the F3, the more the disk insertion force is required, and the larger F6 is, the more the disk insertion direction is distorted. Therefore, when F3 and F6 are large, the uncomfortable feeling of introduction is large.

When θ3 = 22 ° F1 = F2 = 0.2 [N] (20 gf: leaf spring 62 set value)
θ1 = 59.7 °
θ2 = 37 °
F3 = F2 / Cosθ1
= 0.2 / Cos 59.7 °
= 0.396 [N]
F5 = F3 * Sinθ2
= 0.396 * Sin37 °
= 0.238 [N]
F6 = F3 * Cosθ2
= 0.396 * Cos37 °
= 0.316 [N]

When θ3 = 2 ° F1 / F2 = 0.2 [N] (20 gf: leaf spring 62 set value)
θ1 = 22.1 °
θ2 = 20.1 °
F3 = F2 / Cosθ1
= 0.2 / Cos 22.1 °
= 0.216 [N]
F5 = F3 * Sinθ2
= 0.216 * Sin20.1 °
= 0.074 [N]
F6 = F3 * Cosθ2
= 0.216 * Cos20.1 °
= 0.202 [N]
Hereinafter, similarly, F5 and F6 when θ3 = 37 °, 32 °, 27 °, 17 °, 12 °, and 7 ° are determined are shown in FIGS. 27 and 28.

  As shown in FIGS. 25 to 28, the smaller θ1 is, that is, the smaller θ3 is, the smaller the force F5 required for inserting the optical disc 2 is, and the smaller the inserting force is. Further, since the force F6 in the direction orthogonal to the insertion direction of the optical disc 2 is also reduced, the force for distorting the direction in which the optical disc 2 is inserted is also reduced, so that the insertion feeling is improved.

  Then, by setting the rotation angle θ3 of the loading arm 51 to 10 degrees or less, for example, compared with the case where θ3 is set to 22 degrees, F5 is reduced to half or less (0.238 → 0.102), and F6 is set to about 3 It was able to be reduced to 2 / (0.316 → 0.214). As a result, the optical disc 2 can be inserted more smoothly and without trouble.

  Next, operations of the loading arm 51 and the loading cam plate 53 will be described. As shown in FIG. 10, the loading arm 51 is attached to the leaf spring 62 when the engaging convex portion 64 is locked to the holding piece 70 of the first cam groove 66 in the waiting state for insertion of the optical disc 2. It is held at a predetermined insertion standby position against the force. 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 loading cam plate 53 has the engagement convex portion 64 as shown in FIG. The abutment is made in contact with the first guide portion 66a of one cam groove 66, and the loading arm 51 is rotated 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, 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 finished, as shown in FIG. 15, the engaging cam 64 is guided by the third guide part 66 c in the first cam groove 66, and the loading arm 51 is separated from the optical disk 2. 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. 16, which is the loading direction of the optical disc 2, and the contact portion 61 is brought into contact with the side surface of the optical disc 2 from the front side.

  When the loading cam plate 53 is further 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, the loading arm 51 is moved to the first position 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 loading arm 51 finishes ejecting the optical disk 2, the engaging projection 64 is engaged with the holding piece 70 of the first cam groove 66 of the loading cam plate 53 as shown in FIGS. 18 and 10. Thus, the optical disc 2 is held at a predetermined insertion standby position and waits for insertion of the optical disc 2.

  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.

<Eject arm>
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 disk 2 to the disk mounting portion 23 side while being operated by first and second link arms 54 and 55 and an operation arm 58, which will be described later, and the direction of the arrow b1 in FIG. It is rotated in the direction of the arrow b2 in FIG. 29 and 30, the eject arm 52 includes a rotation support member 71 that is 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. 10 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 roundtrip. 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. 31 to eject the optical disc 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 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 is not overloaded 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. 29 and 30, 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 at the tip. 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. 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 91b is rotated toward the bottom case 4 by the urging force of the pressing member 92, and the main chassis 6 is moved. 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.

<First link arm>
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. 10 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. Accordingly, the biasing coil spring 97 rotationally biases the rotation support member 71 in the direction of the arrow b2 in FIG. 18 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 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 biasing force does not act on the eject arm 52 and the optical disc 2.

  As shown in FIG. 32, 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 ejection coil 52 in the ejection direction by the tension coil spring 56 can be changed by preparing a plurality of tension coil springs having different strengths, but it is necessary to prepare a plurality of types of tension coil springs and increase the number of parts. 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.

<Second link arm>
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 operation arm 58 is moved in the direction of the arrow d2, the first link arm 54 moves in the direction of the arrow b1. The eject arm 52 is moved in the direction of the arrow d2 while being moved in the direction of the arrow d2 against the biasing force. Thus, the eject arm 52 can rotate in the arrow b2 direction according to the sliding amount of the slider 122 in the arrow f2 direction, and can reliably eject the optical disc 2 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 is increased, that is, the direction in which the first link arm 54 and the second link arm 55 are opened, it is urged to rotate in the directions of arrows g1 and g2 in FIG. 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.

<Loop cam>
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. 33, 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. 10, 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.

<Operation arm>
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. The operation arm 58 is formed with a cam groove 108 through which the engagement protrusion 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. 10 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. 10 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. 10 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. Is rotated in the direction of arrow b2 in FIG.

<Third link arm>
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. 10, 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. Accordingly, 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. 10, the first guide groove 125 formed in the slider 122. 10 is rotated in the direction of arrow c1 in FIG. 10, and the operation arm 58 is moved in the direction of arrow d1 in the figure. Further, when the slider 122 is conveyed in the direction of arrow f2 in FIG. 10, the third link arm 100 is guided by the first guide groove 125 and rotated in the direction of 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 separated 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.

  A deck arm 200 is provided on the back side of the housing 3 on the deck portion 4a. In the deck arm 200, the disk drive device 1 is formed exclusively for the optical disk 2 having a large diameter (for example, 12 cm in diameter), so that the user may accidentally insert an optical disk having a small diameter (for example, 8 cm in diameter). It is provided. The deck arm 200 is intended to center the large-diameter optical disc 2.

<Optical disk insertion / ejection operation>
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. 10, 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. 10, 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 so that the 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. 10, 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 arm main body 51a is rotated in the direction of arrow a2 when it is locked to the holding piece 70 formed in the first cam groove 66 of the cam plate 53 and the contact portion 61 is pressed against the outer peripheral surface of the optical disc 2. Is held at the insertion standby position. Further, the third link arm 100 engaged with the slider 122 is rotated in the direction of the arrow c2 in FIG. 10, 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 from the disk insertion / removal port 19 by the user, the contact portion 61 of the loading arm 51 is pressed by the outer peripheral surface of the optical disk 2. At this time, the loading arm 51 is held at the insertion standby position by engaging the engaging convex portion 64 with the holding piece 70 of the loading cam plate 53. Specifically, since the loading arm 51 has a rotation angle θ3 smaller than 42 °, the arm main body 51a is reliably rotated in the direction of the arrow a2 in FIG. Therefore, the loading arm 51 can prevent a situation in which the optical disc 2 cannot be inserted, damage to the contact portion 61, the arm main body 51a, and the optical disc 2 due to the arm main body 51a rotating in the direction of the arrow a1. .

  In addition, the loading arm 51 can support the outer peripheral surface of the optical disc 2 by the contact portion 61 with the insertion when the rotation angle θ3 at the insertion standby position is 2 ° or more. Insertion can be prevented. Therefore, the optical disk 2 can prevent the signal recording surface from being damaged by sliding contact with the main chassis 6. In addition, the loading arm 51 has a contact portion 61 before the pulling operation of the optical disc 2 is started later when the loading cam plate 53 slides by setting the rotation angle θ3 at the insertion standby position to 2 ° or more. Comes into contact with the back side of the optical disk 2 in the insertion direction. Therefore, the optical disk 2 smoothly moves from insertion to pull-in, and the operational feeling is not impaired.

  Furthermore, the loading arm 51 is orthogonal to the insertion force F5 of the optical disc 2 and the insertion direction of the optical disc 2 as described above by setting the rotation angle θ3 at the insertion standby position to 2 ° or more and 10 ° or less. The direction force F6 is reduced, and it is possible to rotate more smoothly in the direction of the arrow a2.

  When the optical disk 2 is further inserted into the housing 3 following the rotation of the loading arm 51 in the direction of the arrow a2, the support portion 88 of the eject arm 52 is pressed against the insertion end surface of the optical disk 2, and FIG. As shown, the eject arm 52 is rotated in the direction of the arrow b1 in FIG. 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 side of the housing 3 toward the right guide wall 118 side, 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 the 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. 11, the tension coil spring 56 stretched between the first link arm 54 and the main chassis 6 is expanded, 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 drive mechanism 120 receives the drive force of the drive motor 121 and causes the slider 122 to slide in the direction of the 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 engaging 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 by the loading arm 51 to the centering position located on the disk mounting portion 23, the engagement convex portion 64 is moved to the loading cam 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.

  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. 11, 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.

  Further, 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. 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 on 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. 15, the contact portion 61 is separated from the side surface of the optical disc 2 by being rotated in the direction of the arrow a2. Furthermore, the deck arm 200 that has centered the optical disc 2 is separated from the side surface of the optical disc 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 direction of the arrow h1, as shown in FIG. 15, the tip portion is abutted against the bent piece 81 of the rotation support member 71 and the rotation of the rotation support member 71 in the direction of the arrow b2 is performed. 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 completed 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. 16 as the engaging convex portion 64 moves from the third guide portion 66c of the loading cam plate 53 to the second guide portion 66b. 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 direction of the arrow f2, and the sub-slider 151 is slid in the direction of the arrow h2 in FIG. 16, 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 a guide pin (not shown) standing upright from the bottom case 4, and the chucking with the turntable 23a is released.

  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. 17, 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. 18, when the slider 122 is moved to the initial position, the slide operation 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.

  When the slider 122 is moved to the initial position, the loading cam plate 53 is also slid to the disk insertion port 19 side, and the loading arm 51 is held at a predetermined insertion standby position. At this time, since the loading cam plate 53 is formed with the abutment side 70a of the holding piece 70 parallel to the sliding direction of the loading cam plate 53, the loading arm 51 is surely provided even when the sliding position varies. It can overhang on the rotation area | region of the engagement convex part 64, and can control rotation of the loading arm 51. FIG. Thus, the loading arm 51 is in a predetermined insertion standby state in which the arm body 51a is rotated in the direction of arrow a2 in FIG. 22 when the contact portion 61 is pressed against the outer peripheral surface of the optical disk 2 in the optical disk 2 insertion standby state. Held in position.

  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 apparatus 1, as shown in FIG. 12, 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 back side in the insertion direction of the optical disk 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 may be hindered.

  In order to absorb such a deviation 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 shaft 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 disc 2 is ejected. It is possible to prevent the opening timing in the a2 direction from being delayed.

  The loading arm 51 is provided with a long insertion hole 60, the rotation support shaft 63 is provided on the deck portion 4a, and the cylindrical rotation support shaft 63 is provided on the loading arm 51 so as to protrude from 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.

  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 when the optical disc 2 is inserted, 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.

<Drive mechanism>
As shown in FIG. 10, 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. 10 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. 34, the slider 122 is made of a resin member that is formed in a substantially rectangular parallelepiped shape. The slider 122 is engaged with the engagement protrusion 109 formed on the third link arm 100 on 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. 34, a first cam slit 130 that moves the base unit 22 up and down over the chucking release position and the recording / reproducing position is provided in the longitudinal direction. 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. 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. They are arranged so as to be slidable in the direction of an arrow h1 or an arrow h2 perpendicular to FIG.

  As shown in FIGS. 10 and 36, the sub-slider 151 is made of a long flat 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. 15, when the optical disk 2 is loaded, the contact convex portion 168 is brought into contact with the bent piece 81 of the rotation support member 71 to release the pushing arm 72 from the side surface of the optical disk 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. 36 and 37, the locking portion 174 to which the locking piece 175 is locked is provided in front of the upper horizontal surface portion 170 b of the second cam slit 170, and from the upper surface 151 a 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. 14, 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. 17, the engagement convex portion 177 moves in the second guide groove 126, so that the support portion 165a serves as the fulcrum. 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.

<Other embodiments>
The configuration of the disk drive device 1 to which the present invention is applied has been described above. The loading arm 51 of the disk drive device 1 to which the present invention is applied has the engaging convex portion 64 on the holding piece 70 of the loading cam plate 53. In addition to the configuration of being held at a predetermined insertion standby position by being locked, the biasing force of the leaf spring 62 may be used to hold the predetermined insertion standby position.

  Specifically, as shown in FIG. 38, the loading arm 51 is formed with a holding side 51b that is held at a predetermined insertion standby position by the leaf spring 62 being locked to the arm body 51a. The holding side 51b can hold the loading arm 51 at the predetermined insertion standby position described above by restricting the rotation of the arm body 51a when the leaf spring 62 is abutted in parallel. The loading arm 51 is always urged to rotate so that the leaf spring 62 abuts the holding side 51 b, and when the guide of the engaging convex portion 64 by the first cam groove 66 of the loading cam plate 53 is released. The urging force of the leaf spring 62 is held at a predetermined insertion standby position.

  The disc drive apparatus 1 can also hold the loading arm 51 at a predetermined insertion standby position by using such a configuration, and can be reliably rotated in the direction of the arrow a2 when the optical disc 2 is inserted. .

  Further, the disk drive device 1 is provided with a position restricting convex portion that protrudes on the rotation area of the loading arm 51 on the deck portion 4a, and resists the urging force of the leaf spring 62 during the disk insertion standby. 51a may be locked to the position restricting convex portion and thereby held at a predetermined insertion standby position. When the optical disk 2 is retracted or ejected, the loading arm 51 is rotated by the loading cam plate 53, so that the loading arm 51 is rotated in the direction of the arrow a1 or a2 over the position regulating convex portion.

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. 1 is a perspective view showing the inside of a disk drive device from the bottom side. 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. FIG. 6 is a plan view showing a state in which the loading arm is held at a predetermined insertion standby position in the optical disk insertion standby state. FIG. 6 is a plan view showing a state in which the loading arm is held at a predetermined insertion standby position in the optical disk insertion standby state. It is a top view which shows the state in which the optical disk was inserted in the state in which the loading arm is not hold | maintained at the predetermined insertion standby position. It is a top view which shows the state in which the optical disk was inserted in the state in which the loading arm is hold | maintained at the predetermined insertion standby position. It is a top view which shows the state in which the optical disk was inserted in the state in which the loading arm is hold | maintained at the predetermined insertion standby position. 6 is a graph showing the relationship between the rotation angle of the loading arm and the force required to insert the optical disc 2; 6 is a table showing the relationship between the rotation angle of the loading arm and the force required to insert the optical disc 2. 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 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 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 a top view which shows the other example of a loading arm. It is a top view which shows the conventional disk drive apparatus.

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, 70 holding piece, 70a contact side, 71 rotation support member, 72 Extrusion arm, 73 Coil spring, 82 Rotating piece, 88 support portion, 90 pickup portion, 96, 98 locking portion, 100 third link arm, 108 cam groove, 112 cam groove, 112a insertion guide wall, 112b pull-in guide wall, 112c discharge guide wall, 113 Guide convex portion, 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 portion, 165 connecting arm, 170 first 2 cam slits, 171 second guide plate, 200 deck arm, 203 coil spring, 212 regulating arm, 214 spring locking portion, 220 centering guide, 221 guide piece,

Claims (8)

The device body into which the disc is inserted and removed,
An arm main body rotatably supported by a fulcrum provided on one side in a plane parallel to the disk in a direction perpendicular to the disk insertion / removal direction of the apparatus main body, and provided at the tip of the arm main body And a support portion for supporting the side surface on the back side in the insertion direction of the disc. When the disc is inserted, the disc is rotated in the insertion direction to draw the disc into the apparatus main body, and when the disc is ejected. A loading arm rotated in the discharging direction;
When the disk is inserted, the support member is pressed by the outer periphery of the disk, so that a holding member that holds the arm main body at an insertion standby position that is rotatable toward the one side surface of the apparatus main body. And a disk drive device. Having a cam portion with which an engaging portion formed on the arm body is engaged, and having a loading cam plate for rotating the loading arm,
The disk drive device according to claim 1, wherein the loading cam plate has the holding member formed on the cam portion. The engaging part is composed of an engaging convex part protruding from the arm body,
The cam portion is formed on the loading cam plate and includes an engagement groove with which the engagement convex portion is engaged.
The holding member comprises a holding piece formed in the engagement groove,
3. The disk drive apparatus according to claim 2, wherein the loading arm is urged to rotate in the direction in which the disk is pulled in by an urging member provided in the apparatus main body.   4. The disk drive device according to claim 3, wherein the holding piece is formed in parallel with a sliding direction of the loading cam plate.   The rotation angle of the loading arm formed by a straight line passing through the fulcrum part and the support part and an insertion direction of the disc at the insertion standby position is smaller than 42 °. Disk drive device.   6. The disk drive device according to claim 5, wherein the rotation angle of the loading arm is 2 ° or more at the insertion standby position.   The disk drive device according to claim 6, wherein the rotation angle of the loading arm is approximately 10 ° to 2 ° at the insertion standby position. A device body provided with a disk insertion / removal port;
A disk drive device disposed in the device main body, into which a disk is inserted / removed via the disk insertion / removal port,
The disk drive device
The device body into which the disc is inserted and removed,
An arm main body rotatably supported by a fulcrum provided on one side in a plane parallel to the disk in a direction perpendicular to the disk insertion / removal direction of the apparatus main body, and provided at the tip of the arm main body And a support portion for supporting the side surface on the back side in the insertion direction of the disc. When the disc is inserted, the disc is rotated in the insertion direction to draw the disc into the apparatus main body, and when the disc is ejected. A loading arm rotated in the discharging direction;
When the disk is inserted, the support member is pressed by the outer periphery of the disk, so that a holding member that holds the arm main body at an insertion standby position that is rotatable toward the one side surface of the apparatus main body. And electronic equipment.

Images