JP2010176773A - Disk transportation mechanism, disk drive, and electronic appliance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably and smoothly eject a disk to a prescribed ejection position. <P>SOLUTION: A disk transportation mechanism includes: an eject arm 22 that is freely turnably supported inside a device body 3 in/from which disks 2A, 2B different in large and small diameters are inserted/removed, and that is pressed by a disk 2 to be turned in the insertion direction in inserting the disk 2, and turned in the ejection direction to eject the disk 2 out of the device body 3 in ejecting the disk 2; and a slide member 24 having a first latching part 76 for latching the eject arm 22 to a turning position where a large diameter disk 2A is ejected to a prescribed ejection position and a second latching part 77 for latching the eject arm 22 to a turning position where a small diameter disk 2B is ejected to a prescribed ejection position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disk transport mechanism for transporting a disk over the inside and outside of the apparatus main body, a disk drive using the disk transport mechanism, and an electronic apparatus using the disk drive, and in particular, inserting the disk directly into the apparatus main body. The present invention relates to a so-called slot-in type disk transport mechanism, a disk drive, and an electronic device.

  Conventionally, optical disks such as CD (Compact Disk) and DVD (Digital Versatile Disk) BD (Blue-ray Disk), and magneto-optical disks such as MO (Magneto optical) and MD (Mini Disk) have been widely known as optical disks. Various disk drive devices corresponding to 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. There are a type in which a disc is automatically mounted on an internal turntable when the disc tray is pulled in, a type in which a disc is directly mounted on a turntable provided in the disc tray, and the like. However, both types require operations such as opening and closing the lid and door, inserting and removing the disc tray, and loading the disc on the turntable.

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

  In addition, in electronic equipment such as a personal computer on which a disk drive device is mounted, there is a demand for further reduction in size, weight, and thickness. In the slot-in type disk drive device, a plurality of abutting portions that are in contact with the outer peripheral portion of the disk inserted from the disk insertion / removal port of the front panel are provided at the front end portion, and the base end portion is rotatably supported. The rotating arm is arranged, and while the rotating arm is rotated in a plane parallel to the disk, a loading operation for pulling the disk from the disk insertion / removal opening into the housing and a disk from the disk insertion / removal opening are performed. 2. Description of the Related Art A disk drive device that performs an ejecting operation for discharging to the outside of the body is provided (see, for example, Patent Document 1).

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

  However, in the above disk drive device, since the driving force for ejecting the optical disk is only the spring elastic force, the stationary position of the optical disk ejected outside the apparatus main body tends to vary. In addition, the stationary position of the optical disk may vary due to the elastic force changing due to the aging of the biasing member. Further, a panel curtain made of non-woven fabric or the like should be provided at the disk insertion / removal port through which the optical disk is inserted or ejected in order to stabilize the stationary position of the optical disk and remove dust adhering to the signal recording surface of the optical disk. There is. However, if the quality of the panel curtain varies, it will be difficult to stabilize the stationary position of the optical disk.

  In addition, since the optical disk is inserted and ejected while swinging a plurality of rotating arms, the track of the optical disk is not stable. Particularly, when inserting and ejecting a small-diameter disk, it is straight from the disk insertion / removal opening provided on the front of the housing. It was not possible to perform smooth insertion / ejection such as no discharge.

JP 2005-100595 A

  Therefore, the present invention is capable of stably ejecting a disc to a predetermined ejection position during an ejection operation in a disc transport mechanism that transports a disc using an arm that is rotatably supported by the apparatus body. It is another object of the present invention to provide a disk transport mechanism, a disk drive, and an electronic device that can smoothly eject a disk.

  In order to solve the above-described problems, a disc transport mechanism according to the present invention is rotatably supported in a device body into which a disc having a different size is inserted and removed, and is pressed against the disc when the disc is inserted. An eject arm that is rotated in the insertion direction and rotates in the ejection direction when the disc is ejected to eject the disc out of the apparatus main body, and the eject arm is in a pivot position that ejects the large-diameter disc to a predetermined ejection position. And a slide member having a second locking portion for locking the eject arm at a rotational position for discharging the small-diameter disk to a predetermined discharge position. is there.

  Further, the disk drive according to the present invention includes an apparatus main body, a disk transport mechanism for transporting disks having different sizes across the inside and outside of the apparatus main body, and recording and reproduction for recording or reproducing information signals with respect to the disk. And / or a playback mechanism, and the disc transport mechanism is rotatably supported in the apparatus main body, pressed when the disc is inserted and rotated in the insertion direction, and ejected when the disc is ejected. An eject arm that pivots in a direction and ejects the disk to the outside of the apparatus main body, a first locking portion that latches the eject arm at a pivot position that ejects the large-diameter disk to a predetermined ejection position, and And a slide member having a second locking portion for locking the eject arm at a rotational position for discharging the small-diameter disk to a predetermined discharge position.

  An electronic apparatus according to the present invention includes a device main body connected to a disk drive, and the disk drive includes a device main body and a disk transport mechanism for transporting disks having different large and small diameters inside and outside the device main body. A recording and / or reproducing mechanism for recording or reproducing information signals on the disk, and the disk transport mechanism is rotatably supported in the apparatus body, and is inserted into the disk when the disk is inserted. An eject arm that is pressed and rotated in the insertion direction, rotates in the ejection direction when the disk is ejected and ejects the disk to the outside of the apparatus main body, and a pivot position that ejects the large-diameter disk to a predetermined ejection position. A first locking portion for locking the eject arm, and a lock position for discharging the small-diameter disk to a predetermined discharge position. It is intended and a sliding member having a second engaging portion.

  In order to solve the above-described problem, the disk transport mechanism according to the present invention is rotatably supported in the apparatus main body to which the disk is inserted and removed, and is pressed by the disk when the disk is inserted and inserted in the insertion direction. And an eject arm that rotates in the eject direction when the disc is ejected and ejects the disc to the outside of the apparatus main body, and a pivot member that pivots the eject arm in the eject direction. Are formed with a plurality of support portions that contact the outer peripheral surface of the disk at different angles.

  Further, the disk drive according to the present invention includes an apparatus main body, a disk transport mechanism for transporting disks having different sizes across the inside and outside of the apparatus main body, and recording and reproduction for recording or reproducing information signals with respect to the disk. And / or a playback mechanism, and the disc transport mechanism is rotatably supported in the apparatus main body, pressed when the disc is inserted and rotated in the insertion direction, and ejected when the disc is ejected. An eject arm that rotates in a direction and ejects the disk to the outside of the apparatus main body, and a pivot member that rotates the eject arm in the eject direction, and the eject arm has different angles with respect to the outer peripheral surface of the disk. A plurality of support portions that come into contact with each other are formed.

  An electronic apparatus according to the present invention includes a device main body connected to a disk drive, and the disk drive includes a device main body and a disk transport mechanism for transporting disks having different large and small diameters inside and outside the device main body. A recording and / or reproducing mechanism for recording or reproducing information signals on the disk, and the disk transport mechanism is rotatably supported in the apparatus body, and is inserted into the disk when the disk is inserted. An eject arm that is pressed and pivoted in the insertion direction, pivots in the ejection direction when the disc is ejected and ejects the disc out of the apparatus main body, and a pivot member that pivots the eject arm in the eject direction. The eject arm is provided with a plurality of support portions that contact the outer peripheral surface of the disk at different angles.

  According to the present invention, the eject arm can be locked at a position corresponding to the diameter of the disk, and the amount of rotation of the eject arm can be reliably regulated according to the disk diameter. Therefore, the disc ejection position can be set to a desired position, and the disc can be ejected stably to this ejection position.

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 an external appearance perspective view which shows a bottom case. It is an external appearance perspective view which shows a top cover, (a) shows an outer surface side, (b) shows an inner surface side. It is an external appearance perspective view which shows a circuit board, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a loading arm, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a loading cam plate, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows an eject arm, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a slide guide rail, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a subchassis unit, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a chassis plate, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a slide arm, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a slide operation board, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a position control board, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a base unit, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a main slider, (a) shows the top cover side, (b) shows the bottom case side. It is an external appearance perspective view which shows a sub slider, (a) shows the top cover side, (b) shows the bottom case side. It is a top view which shows the disc drive apparatus in which the small diameter disc is inserted. It is a top view explaining operation | movement of the switch operation cam part when a small diameter disc is inserted. It is a top view which shows the disk drive apparatus which draws in a small diameter disk. It is a top view which shows the disk drive apparatus which conveys a small diameter disk to a disk mounting position, and performs chucking. It is a top view which shows the disc drive apparatus which released the small diameter disc. It is a top view which shows the disc drive apparatus which has pinched the small diameter disc. It is a top view which shows the disk drive apparatus which has discharged | emitted the small diameter disk. It is a top view which shows the disc drive apparatus which conveyed the small diameter disc to the disc insertion / removal position. It is a top view which shows the disk drive apparatus which returned to the insertion standby state. It is a top view which shows the disc drive apparatus in which the large diameter disc is inserted. (A) is a top view explaining the operation | movement which a lock pin retracts | saves from a lock groove, (b) is a top view explaining the operation | movement of a switch operation cam part when a large diameter disc is inserted. It is a top view which shows the disk drive apparatus which draws in a large diameter disk. It is a top view which shows the disk drive apparatus which conveys a large diameter disk to a disk mounting position, and performs chucking. It is a top view which shows the disk drive apparatus which released the large diameter disk. It is a top view which shows the disk drive apparatus which has clamped the large diameter disk. It is a top view which shows the disk drive apparatus which has discharged | emitted the large diameter disk. It is a top view which shows the disc drive apparatus which conveyed the large diameter disc to the disc insertion / removal position. It is a top view which shows the disk drive apparatus which returned to the insertion standby state.

Hereinafter, a disk transport mechanism, a disk drive, and an electronic apparatus to which the present invention is applied will be described in detail with reference to the drawings. The description will be given in the following order.
1. 1. Device main body 2. Disk transport mechanism Base unit 4. 4. Drive mechanism Disc insertion / ejection process

<1. Main unit>
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 is formed in a substantially rectangular box shape as a whole, and is compatible with an optical disk 2 such as a CD (Compact Disk), a DVD (Digital Versatile Disk), or a BD (Blue-ray Disc). It is possible to record and reproduce information signals. In addition, the disk drive device 1 can mount either a large-diameter disk 2A having a diameter of about 12 cm or a small-diameter disk 2B having a diameter of about 8 cm.

  First, a specific configuration of the disk drive device 1 will be described. As shown in FIGS. 2 to 5, the disk drive device 1 includes a device main body 3 serving as an outer casing. The device main body 3 includes a bottom case 4 having a substantially flat box shape as a lower housing and a bottom case 4. The top cover 5 is a top plate that covers the upper opening of the case 4, and the front panel 6 that is an insertion / removal surface of the optical disk 2. In the apparatus main body 3, a disk conveying mechanism 20 that conveys the optical disk 2 having a large and small diameter across the inside and outside of the apparatus main body 3, and recording and / or recording of an information signal with respect to the optical disk 2 conveyed in the apparatus main body 3. A base unit 130 having an optical pickup for reproduction and a driving mechanism 150 for supplying a driving force to the disk transport mechanism 20 are provided.

  Then, the optical disc 2 is inserted into the apparatus main body 3 from a disc insertion / removal opening 15 provided in the front panel 6 and is conveyed to the inside by the disc conveyance mechanism 20. For the apparatus body 3, the front panel 6 is provided with a front surface 3a on which the optical disk 2 is inserted and removed, a rear surface 3b with respect to the insertion direction of the optical disk 2, and a left side surface 3c with respect to the front panel 6. A right side surface facing the front panel 6 is a right side surface 3d.

  As shown in FIGS. 5A and 5B, the top cover 5 is made of a 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 the bottom case 4. And a pair of side plate portions 5b slightly bent along the both side surfaces. A substantially circular opening 7 is formed at a substantially central portion of the top plate portion 5a. The opening 7 is for allowing the engaging protrusion 143a of the turntable 132a that is engaged with the center hole 2a of the optical disc 2 to face 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 apparatus main body 3 so as to come into contact with the periphery of the center hole 2a of the optical disc 2 held on the turntable 132a. A contact protrusion 8 is formed.

  As shown in FIG. 4, the bottom case 4 is made of a sheet metal formed in a substantially flat box shape, and its bottom surface portion is substantially rectangular, and the right side surface portion is raised above the bottom surface portion. A deck portion 4a projecting outward is provided. On the deck portion 4a, a loading arm 21 for pulling an optical disk 2 described later into the apparatus main body 3 and a loading cam plate 23 for driving the loading arm 21 are rotatably supported. Further, the deck portion 4 a is attached with a deck guide rail 19 that prevents the loading arm 21 from being lifted and guides the rotation at the side edge on the front surface 3 a side of the apparatus body 3.

  The bottom case 4 is provided with a circuit board 10 on the bottom surface of which a detection switch for detecting the operation of each part is disposed. As shown in FIG. 6, the circuit board 10 is mounted with electronic components such as an IC chip constituting a drive control circuit, and a connector for electrical connection of each part, and a plurality of detection switch groups 11 are provided. Is arranged. Specifically, the circuit board 10 includes first and second large-diameter disk detection switches 11a and 11b that detect insertion of the large-diameter disk 2A, and a small-diameter disk detection switch 11c that detects insertion of the small-diameter disk 2B, respectively. It has an eject position detection switch 11d, a home position detection switch 11e, and a release position detection switch 11f that are pressed according to the slide of the main slider 152.

  Further, the bottom case 4 is provided with a chucking release pin 12 standing on the bottom surface portion to release chucking between the turntable 132a and the optical disc 2. The chucking release pin 12 is located near the center hole 2a of the optical disc 2 held by the turntable 132a of the base unit 130 when a traverse chassis 131 of the base unit 130 described later is lowered from the recording / reproducing position to the chucking release position. By pushing up, chucking between the turntable 132a and the optical disc 2 is released.

  Further, a sub chassis unit 25 of a disk transport mechanism 20 described later is attached to the back side of the bottom case 4. In the bottom case 4, the circuit board 10 is disposed below the sub-chassis unit 25, and the upper part of the sub-chassis unit 25 is a disk transport area in which the eject arm 22, the slide guide rail 24, and the like move.

  The bottom case 4 has a pair of elevating guides in which a support rail 13 that slidably supports a main slider 152 (to be described later) and a slit that guides the elevating of the traverse chassis 131 of the base unit 130 are formed vertically. Walls 14 and 14 are formed to rise.

  As shown in FIG. 2, the front panel 6 constituting the front surface 3a of the apparatus body 3 is formed in a substantially rectangular shape, and has a rectangular disk insertion / removal port 15 through which the optical disk 2 is inserted and removed in the horizontal direction over the longitudinal direction. Is provided. That is, the optical disk 2 can be inserted into the apparatus main body 3 from the disk insertion / removal opening 15 or can be ejected from the disk insertion / removal opening 15 to the outside of the apparatus main body 3. The disk insertion / removal opening 15 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 cut into a long shape, and is adhered to the back side of the front panel 6 with an adhesive or the like, thereby preventing dust and the like from entering the apparatus main body 3 and optical discs. When the disk 2 is inserted or removed, it comes into sliding contact with the disk surface, thereby removing dust and the like adhering to the optical disk 2 and preventing the optical disk 2 from popping out or coming off from the disk insertion / removal port 15.

  In addition, on the front surface of the front panel 6, a display unit 16 that lights and displays an access state with respect to the optical disc 2 and an eject button 17 that is pressed when the optical disc 2 is ejected are provided.

<2. Disk transport mechanism>
Next, the disc transport mechanism 20 that transports the optical disc 2 across the inside and outside of the apparatus main body 3 will be described. The disk transport mechanism 20 includes a disk insertion / removal position (FIGS. 27 and 35) where the optical disk 2 is inserted / removed from the disk insertion / removal opening 15 and a disk mounting position where the optical disk 2 is mounted on the turntable 132a of the disk mounting portion 132 ( The optical disk 2 is transported between FIG. 22 and FIG.

  The disc transport mechanism 20 is moved between the deck portion 4a and the top plate portion 5a, and can be swung in a plane parallel to the main surface of the optical disc 2 inserted into the apparatus main body 3. 21 and an eject arm 22, a loading cam plate 23 that transmits a driving force from a driving mechanism 150, which will be described later, to the loading arm 21, a slide guide rail 24 that slides on the outer peripheral surface of the optical disc 2 to guide insertion and ejection, and a slide And a sub-chassis unit 25 that supports the guide rail 24 and the eject arm 22.

  In the disk transport mechanism 20, when the optical disk 2 is inserted from the disk insertion / removal port 15 and the eject arm 22 is rotated to a predetermined position corresponding to the disk diameter, the loading arm 21 receiving the driving force of the driving mechanism 150 is moved. The optical disk 2 is automatically drawn into the apparatus main body 3 by being rotated to the back surface 3b side. In the drawing process of the optical disc 2, the disc transport mechanism 20 performs centering by supporting the optical disc 2 with the loading arm 21, the eject arm 22 and the slide guide rail 24, and the center hole 2a of the optical disc 2 faces the turntable 132a. Transport to the disc loading position. Further, when the disc transport mechanism 20 is instructed to eject the optical disc 2, the eject arm 22 rotates to the front surface 3 a side so that the center hole 2 a of the optical disc 2 faces the disc insertion / extraction opening 15. Drain to the position.

  At this time, in the disk transport mechanism 20, the position of the slide guide rail 24 is regulated according to the disk diameter, and the eject arm 22 is locked to the slide guide rail 24, so that the eject arm 22 corresponds to the disk diameter. The amount of rotation. Thereby, the disk transport mechanism 20 can transport both the large-diameter disk 2A and the small-diameter disk 2B to the disk insertion / removal position where the center hole 2a faces from the disk insertion / removal port 15 and hold it without dropping.

[Loading arm]
Hereinafter, each component will be described in detail. The loading arm 21 pulls the optical disc 2 onto the disc mounting portion 132 of the base unit 130, and the base end portion is on the deck portion 4a of the bottom case 4 and closer to the disc insertion / removal opening 15 side than the disc mounting portion 132. is rotatably supported, and the distal end is rotatable in the arrow a ₁ direction and the arrow a ₂ direction in FIG. 3. Specifically, as shown in FIGS. 7A and 7B, the loading arm 21 includes an arm main body 21a made of a flat sheet metal, and an insertion hole 30 is formed in a main surface portion of the arm main body 21a. by the insertion hole 30 is engaged by rotatably bis 31 in the deck portion 4a, the upper deck portion 4a of the screw 31 as a fulcrum, the arrow a ₁ direction in FIG. 3 and FIG. 7 loading the optical disc 2 and is rotatably supported in the same in the arrow a ₂ direction to eject the optical disc 2.

  In addition, the loading arm 21 is provided with a guide roller 33 that is in contact with the outer peripheral portion of the optical disk 2 inserted from the disk insertion / removal port 15 at the tip of the arm body 21a. The guide roller 33 is rotatably attached to a support pin protruding from the tip of the arm body 21a. Further, the guide roller 33 is made of a softer resin than the optical disc 2, the central portion that comes into contact with the outer peripheral portion of the optical disc 2 inserted from the disc insertion / removal opening 15 is curved inward, and both end portions thereof are expanded in diameter. The flange portion has a substantially hourglass shape that restricts the movement of the optical disc 2 in the height direction.

  Further, as shown in FIG. 7B, the loading arm 21 is provided with an engaging projection 34 that is inserted and engaged with a first cam groove 42 of a loading cam plate 23 described later. The loading arm 21 rotates the loading cam plate 23 when the engaging projection 34 moves along the first cam groove 42 of the loading cam plate 23, and responds to the rotation of the loading cam plate 23. Is rotated. Note that an arc-shaped insertion hole 35 is opened in the deck portion 4 a in accordance with the rotation region of the engaging convex portion 34 inserted through the first cam groove 42 of the loading cam plate 23.

[Loading cam plate]
As shown in FIGS. 8A and 8B, the loading cam plate 23 for driving the loading arm 21 is made of a flat plate metal, and is engaged with a main slider 152 of the drive mechanism 150 described later, thereby As the main slider 152 moves, the deck 4a is rotated, whereby the loading arm 21 is rotated and a slide guide rail 24 described later is locked or unlocked. The loading cam plate 23 is rotatably supported by a support piece 4b (see FIG. 4) protruding from the deck portion 4a on the bottom case 4 by a screw 39, so that the deck 39 is supported on the deck 39 with the screw 39 as a fulcrum. 3 in which is rotatable in the arrow b ₁ direction and the arrow b ₂ direction. The loading cam plate 23 has an arm engaging portion 40 that is engaged with the loading arm 21 at one end extending toward the front surface 3 a side of the apparatus main body 3, and has one end extending toward the back surface 3 b side of the apparatus main body 3. A rail lock portion 41 that engages and disengages with the slide guide rail 24 is formed.

  The arm engaging portion 40 is formed with a first cam groove 42 into which an engaging convex portion 34 protruding from the loading arm 21 is inserted. The first cam groove 42 is formed in a long hole shape in which the engaging projection 34 can move in accordance with the rotation of the loading cam plate 23 and the loading arm 21.

The rail lock portion 41 protrudes from the deck portion 4 a onto the bottom surface portion of the bottom case 4 and extends to the slide area of the slide guide rail 24. As shown in FIG. 8B, in the rail lock portion 41, the lock pin 44 that is engaged and disengaged with the lock groove 78 of the slide guide rail 24 protrudes toward the bottom surface portion side. The lock pin 44, the loading cam plate 23 by the loading arm 21 along with the insertion of the large-diameter disk 2A is rotated in the arrow b ₁ direction and retracted from the lock groove 78 of the slide guide rail 24 is slidable . On the other hand, the locking pin 44, since the loading cam plate 23 by the loading arm 21 at the time of insertion of the small-diameter disk 2B is hardly rotated in the arrow b ₁ direction, without retracting from the lock groove 78 of the slide guide rails 24, restricting the slide Maintain the state.

In addition, the loading cam plate 23 has a slider pin 45 that protrudes from the base end side of the rail lock portion 41 and protrudes toward the bottom surface side to engage with the loading cam 155 of the main slider 152. The loading cam plate 23 is rotated in the direction of the arrow b ₁ or b _{2 when} the slider pin 45 slides along the loading cam 155 as the main slider 152 slides, thereby rotating the loading arm 21. Let

Further, the loading cam plate 23 is inserted into an insertion hole 46 formed on the back side of the deck portion 4a, and a locking convex portion 48 that is locked to one end of the coil spring 47 is formed. The loading cam plate 23, by receiving the urging force of the coil spring 47 via the locking projections 48 are rotationally biased to normally arrow b ₂ direction. The locking projection 48 protrudes downward from a stepped portion 49 having a step at a position higher than the deck portion 4a, and one end of a coil spring 47 supported by the deck portion 4a is locked.

The loading cam plate 23 is pivoted in the direction of the arrow b ₂ that receives the urging force of the coil spring 47 when the slider pin 45 engages with the loading cam 155 of the main slider 152 in the waiting state for insertion of the optical disc 2. It is regulated. At this time, in the loading cam plate 23, the rail lock portion 41 is rotated to the front surface 3a side, and the lock pin 44 is engaged with the lock groove 78 of the slide guide rail 24.

Then, the loading cam plate 23, the large-diameter disk 2A is inserted, by being rotated in the arrow b ₁ direction by the loading arm 21, the slider pin 45 on the large-diameter disc cam portion 155a of the loading cam 155 Moving. When the main slider 152 is slid, the loading cam plate 23 is rotated according to the shape of the large-diameter disk cam portion 155a, and the large-diameter disk 2A is drawn by the loading arm 21.

  The loading cam plate 23 maintains its initial position without being rotated by the loading arm 21 when the small-diameter disk 2B is inserted. When the main slider 152 is slid, the loading cam plate 23 is rotated according to the shape of the small-diameter disk cam portion 155 b of the loading cam 155, and the loading arm 21 pulls the small-diameter disk 2 </ b> B.

When the optical disk 2 is ejected, the loading cam plate 23 is guided by the large-diameter disk cam section 155a or the small-diameter disk cam section 155b in accordance with the slide of the main slider 152, and the loading arm 21 is moved by the arrow a. Turn in _two directions. As a result, the optical disc 2 is ejected while being sandwiched between the eject arm 22 and the loading arm 21.

[Eject arm]
The eject arm 22 for discharging the optical disk 2 from the disk mounting portion 132 to the outside of the disk insertion / removal opening 15 is the side surface opposite to the side surface on which the loading arm 21 is formed, and is the rear surface 3b of the apparatus body 3 from the disk mounting portion 132. It is arranged on the side. The eject arm 22 is rotated to FIG arrow c ₁ direction and the optical disc 2 is guided to the recording and reproducing position while being pressed against the optical disc 2 in FIG. 3 in the arrow c ₂ direction to discharge the disc slot 15 side . As shown in FIGS. 3 and 9A and 9B, the eject arm 22 includes a support shaft 51 that is rotatably supported by the subchassis unit 25, and a disc support portion 52 that supports the outer peripheral surface of the optical disc 2. And a locking pin 53 to be engaged with and disengaged from a slide guide rail 24 described later.

The support shaft 51 protrudes from the lower surface side of the eject arm 22 and is inserted and supported by a bearing portion 104 provided in the sub chassis unit 25 provided on the bottom surface portion of the bottom case 4. Thus, the eject arm 22 is rotatably supported in the arrow c ₁ direction and c ₂ direction in FIG. 3. Further, the support shaft 51 is engaged with the other end of the coil spring 55 fitted in the bearing portion 104. One end of the coil spring 55 is locked to the chassis plate 90 of the sub-chassis unit 25, so that the eject arm 22 rotates in the direction of arrow c ₂ that always ejects the optical disc 2 by receiving the biasing force of the coil spring 55. It is energized.

  The disc support 52 that supports the outer peripheral surface of the optical disc 2 includes a pickup portion 56 that is formed at the tip portion and prevents the optical disc 2 from sinking to the bottom case 4 side, and a first support that supports the outer peripheral surface of the optical disc 2. A roller 57 and a second support roller 58;

  The pickup unit 56 is a resin-molded member formed so that the tip is directed toward the disk insertion / removal port 15 in the insertion standby state in which the eject arm 22 is rotated to the front surface 3a side of the apparatus main body 3 and gradually toward the tip. An inclined surface that is thin is formed. The pickup unit 56 supports the recording surface side of the optical disc 2 by this inclined surface, prevents sinking to the bottom case 4 side, and slides the inclined surface toward the first support roller 57 side. To guide.

  The first and second support rollers 57 and 58 support the optical disc 2 by contacting the outer peripheral surface of the disc in the insertion / ejection process of the optical disc 2, and are directed upward toward the distal end side of the eject arm 22. Is provided. The first and second support rollers 57 and 58 are rotatably attached to a support pin protruding from the distal end side of the eject arm 22. Further, the first and second support rollers 57 and 58 are made of a resin softer than the optical disk 2, and a central portion that comes into contact with the outer periphery of the optical disk 2 inserted from the disk insertion / removal port 15 is curved inward. Both ends of the optical disk 2 have a substantially hourglass shape that restricts the movement of the optical disk 2 in the height direction as flanges having enlarged diameters.

  The first support roller 57 provided on the front end side of the disc support portion 52 supports the outer peripheral surface of the disc during insertion and ejection of the optical disc 2. The second support roller 58 provided behind the first support roller 57 supports the outer peripheral surface of the disc when the optical disc is centered and when ejection is started. These first and second rollers 57 and 58 are rotatably inserted and supported by support pins that are erected on a rotating plate 52 a that is swingably provided at the tip of the eject arm 22.

That is, when the optical disk 2 is inserted, the eject arm 22 first supports the optical disk 2 by the pickup unit 56 and guides it to the first support roller 57. The eject arm 22 is pressed to the back side of the apparatus main body 3 while supporting the outer periphery of the disk surface in the first support roller 57, it will be rotated in the arrow c ₁ direction. When the optical disk 2 is conveyed to the vicinity of the recording / reproducing position, the outer peripheral surface of the disk is transferred from the first support roller 57 to the second support roller 58, and the optical disk 2 is supported by the second support roller 58. At the start of disc ejection, the outer peripheral surface of the disc is supported by the second support roller 58 and pressed toward the front surface 3 a of the apparatus main body 3.

  At this time, since the eject arm 22 supports the outer peripheral surface of the disc by the second support roller 58, the pushing angle of the optical disc 2 with respect to the ejection direction can be suppressed and smooth ejection can be performed. That is, the ejection of the optical disk 2 is performed by the disk support portion 52 of the eject arm 22 pressing the outer peripheral surface of the disk, but when the ejection direction starts, the pressing direction of the disk support portion 52 is inclined with respect to the ejection direction. The pressing force is dispersed on the side surface side of the apparatus body 3 and smooth discharge becomes difficult, and an excessive load is applied to the optical disc 2, the eject arm 22, and the slide guide rail 24. On the other hand, when the contact angle of the disc support 52 with respect to the outer peripheral surface of the disc is set to a small inclination with respect to the ejection direction at the start of ejection of the optical disc 2, the ejecting amount of the eject arm 22 is insufficient and the disc is conveyed to a predetermined insertion / removal position. become unable. Further, if it is attempted to solve the shortage of the push-out amount, the rotation area of the eject arm 22 is expanded, and the apparatus body 3 is increased in size. Therefore, in the disk drive device 1, first and second support rollers 57 and 58 are provided on the disk support portion 52 of the eject arm 22 so as to come into contact with the outer peripheral surface of the disk at different angles. The roller 58 is brought into contact with an angle with respect to the discharge direction, and the first support roller 57 pushes the roller 58 to a predetermined insertion / removal position at the end of the discharge.

  Further, the eject arm 22 is provided with a locking pin 53 that is engaged with and disengaged from the slide operation plate 92 and the slide guide rail 24 on the back surface 3 b side of the apparatus main body 3. The locking pin 53 protrudes from the bottom surface side of the bottom case 4, and includes first and second pressing sides 74 and 75 formed on the slide guide rail 24, and first and second locking sides 76. , 77 is rotatable. The locking pin 53 is inserted through the second insertion hole 100 of the chassis plate 90 and faces the slide area of the slide operation plate 92.

The locking pin 53 is pressed by the slide operation plate 92 of the sub-chassis unit 25 before recording / reproduction of the optical disc 2, thereby rotating the eject arm 22 in the direction of the arrow c ₁ to move the disc support portion 52. The optical disk 2 is separated from the outer peripheral surface. Further, the locking pin 53 presses the slide guide rail 24 and slides it in the direction of the arrow d ₁ to separate the rail member 73 on which the outer peripheral surface of the optical disc 2 slides away from the outer peripheral surface of the optical disc 2. Further, when the optical disk 2 is ejected, the locking pin 53 is locked to the slide guide rail 24 and rotates the eject arm 22 to a position corresponding to the disk diameter. The locking pin 53 is inserted through the second insertion hole 100 formed in the sub chassis unit 25.

Further, the eject arm 22 is rotated the auxiliary pin 59 rotating in the arrow b ₂ direction to discharge the optical disc 2 by being pressed by the sub-chassis unit 25 upon ejection of the optical disk 2 is assisted is formed. The rotation assist pin 59 protrudes from the bottom surface side of the bottom case 4 and is formed on the slide area of the slide operation plate 92 of the sub chassis unit 25. The eject arm 22, upon ejection of the optical disk 2, turning the auxiliary pin 59 is added rotational force in the arrow b ₂ direction by being biased in rotation assisting spring 120 provided on the slider board 92 The optical disc 2 can be reliably transported to the insertion / removal position.

Further, the eject arm 22, the switch operating cam 60 for operating the first large-diameter disk detection switch 11a and the small-diameter disk detection switch 11c mounted on the circuit board 10 with the rotation in the arrow b ₁ direction form Has been. The switch operation cam portion 60 is formed by being bent toward the circuit board 10 from the vicinity of the support shaft 51, and when the eject arm 22 is rotated, the first large-diameter disk detection switch 11a and the small-diameter disk detection switch 11c. Can be pressed.

The switch operating cam 60 is in the insertion stand-by state of the optical disc 2, by the eject arm 22 is rotated in the arrow c ₂ direction, the first large-diameter disk detection with presses the small disk detection switch 11c It is separated from the switch 11a. In this state, when the small-diameter disk 2B is inserted, the switch operation cam portion 60 is separated from the small-diameter disk detection switch 11c and is also rotated to a position away from the first large-diameter disk detection switch 11a. The disk drive device 1 detects that the small-diameter disk 2B has been inserted by detecting the pressed state of the detection switch group 11.

  On the other hand, when the large-diameter disk 2A is inserted in the waiting state for insertion, the switch operation cam portion 60 is separated from the small-diameter disk detection switch 11c and rotated to a position where the first large-diameter disk detection switch 11a is pressed. The At this time, the slide guide rail 24 is pressed by the large-diameter disk 2A and slid toward the left side surface 3c, thereby depressing the second large-diameter disk detection switch 11b protruding upward from the switch hole 94. Yes. The disk drive apparatus 1 detects that the large-diameter disk 2A has been inserted by detecting the pressed state of the detection switch group 11.

[Slide guide rail]
As shown in FIGS. 3 and 10, the slide guide rail 24 that guides insertion / ejection of the optical disc 2 is formed in a substantially L shape as a whole and is slidably supported by the sub-chassis unit 25 so that the optical disc 2 can be slid. It is possible to slide in the directions of arrows d ₁ and d ₂ in FIG. 3 which are substantially orthogonal to the insertion / ejection direction. The slide guide rail 24 guides the insertion / ejection of the optical disc 2 and centers the optical disc 2 by the loading arm 21 and the eject arm 22.

  The slide guide rail 24 includes a guide portion 70 on which the outer peripheral surface on the left side in the insertion direction of the optical disc 2 is slid, and a guide plate 71 supported by the chassis plate 90 of the sub chassis unit 25. The guide unit 70 has an apparatus in which a rail member 73 made of a resin member on which the optical disk 2 can slide with low resistance is attached to a long sheet metal continuous from the guide plate 71 on the upper surface 70a side serving as a disk conveyance area. The main body 3 extends in parallel with the insertion / ejection direction of the optical disc 2 toward the front surface 3a side. The rail member 73 has a tip that is substantially continuous with the disk insertion / removal opening 15 and is inclined toward the left side surface 3c, so that the optical disk 2 can be easily drawn. The rail member 73 has a substantially U-shaped cross section by opening the right side surface and forming the left side surface and the upper and lower surfaces. The rail member 73 supports the outer peripheral surface of the optical disc 2 from the three directions, and extends vertically and horizontally. Inclination is prevented, and the guide is guided so that it can be conveyed straight in the conveyance direction.

  Further, the rail member 73 is extended to the vicinity of the front surface 3a of the apparatus main body 3, so that the outer peripheral surface of the optical disk 2 slides in the whole process of inserting and ejecting the optical disk 2, and the optical disk 2 is transported toward the main school. Transport straight. Therefore, the disk drive apparatus 1 can convey the optical disk 2 straight in the front-rear direction of the apparatus main body 3 without meandering by the rotation of the loading arm 21 and the eject arm 22, thereby enabling smooth conveyance. Therefore, it is possible to carry out the disc transport with good quality.

  The guide plate 71 is provided on the back surface 3b side of the apparatus main body 3 in the left-right direction and is slidably supported by the chassis plate 90. The guide plate 71 includes first and second pressing sides 74 and 75 that are pressed by the locking pin 53 of the eject arm 22, and first and second locking sides 76 and 77 that lock the locking pin 53. And a lock groove 78 in which the lock pin 44 provided on the loading cam plate 23 is engaged and disengaged is formed.

The guide plate 71 is slid to the right side 3d side of the apparatus main body 3 at all times when the other end of the coil spring 79 that is locked at one end to the chassis plate 90 is locked. It is biased to the middle arrow d ₂ direction.

The first and second pressing sides 74 and 75 are pressed by the locking pins 53 of the eject arm 22, thereby separating the slide guide rail 24 from the rail member 73 of the guide portion 70 from the outer peripheral surface of the optical disc 2. it is intended to slide in the arrow d ₁ direction. First and second push sides 74 and 75 are formed toward the facing capable right side 3d side a locking pin 53 of the eject arm 22 is rotated in the arrow c ₁ direction. The first pressing side 74 is a portion that is pressed by the locking pin 53 when the large-diameter disk 2A is mounted, and the second pressing side 75 is pressed by the locking pin 53 when the small-diameter disk 2B is mounted. It is provided at a position corresponding to the rotation region of the locking pin 53 at the time.

First pressing edge 74, the slide guide rails 24 with the insertion of the large-diameter disk 2A is slid into the d ₁ direction, abuts the locking pin 53 of the eject arm 22 is rotated in the c ₁ direction . The first pressing edge 74 is pressed by the lock pin 53 of the eject arm 22 is rotated in the c ₁ direction by a further sliding of the main slider 152. Thus, the slide guide rails 24 in order to slide in the arrow d ₁ direction against the biasing force of the coil spring 79, the rail member 73 that was supporting the outer peripheral surface of the large-diameter disk 2A is separated from the large-diameter disk 2A This can be rotated.

Second pressing edges 75, since the slide guide rail 24 at the time of insertion of the small-diameter disk 2B is locked at the initial position to wait for the optical disk insertion, the eject arm 22 is rotated in the c ₁ direction in the initial position It contacts the locking pin 53. The second pressing edge 75 is pressed by the lock pin 53 of the eject arm 22 is rotated in the c ₁ direction by a further sliding of the main slider 152. Thus, the slide guide rails 24 in order to slide in the arrow d ₁ direction against the biasing force of the coil spring 79, the rail member 73 that was supporting the outer peripheral surface of the small-diameter disk 2B is separated from the small-diameter disk 2B, which Can be rotated.

First and second Kakaritomehen 76 and 77, by engaging the locking pin 53 of the eject arm 22, to regulate the rotational position of the c ₂ direction of the eject arm 22, depending on the disc diameter The optical disk 2 is reliably conveyed to a predetermined disk insertion / removal position. First, second Kakaritomehen 76 and 77 are formed facing the locking pin 53 of the eject arm 22 is rotated in the arrow c ₂ direction lockably back 3b. The first locking side 76 is a part for locking the locking pin 53 in the discharging process of the large-diameter disk 2A, and the second locking side 77 is the part for locking the locking pin 53 in the discharging process of the small-diameter disk 2B. The slide guide rail 24 is formed at a position corresponding to the slide area.

The first Kakaritomehen 76, the slide guide rails 24 with the discharge of the large-diameter disk 2A is slid into the d ₂ direction, the lock pin 53 of the eject arm 22 is rotated in the c ₂ direction engaging Stop. That is, the slide guide rail 24, because continue to slide in the arrow d ₂ direction in response to the discharge of the large-diameter disk 2A, On rotation region of the locking pin 53, a first engagement projecting rear 3b side A stop edge 76 is positioned, thereby restricting excessive rotation of the eject arm 22. Therefore, the eject arm 22 is restricted from rotating before the disk support portion 52 is rotated in the vicinity of the disk insertion / removal opening 15, and thus the large-diameter disk 2 </ b> A is reliably moved to the disk insertion / removal position where the center hole 2 a faces the outside. Can be conveyed.

Second Kakaritomehen 77, the lock pin 53 of the eject arm 22 is rotated in the c ₂ direction with the discharge of the small-diameter disk 2B is engaged. That is, since the slide guide rail 24 is locked at the insertion standby position slid in the direction of the arrow d2, the _second locking side 77 is placed on the rotation region of the locking pin 53 when the small-diameter disk 2B is ejected. Is located. Since the second locking side 77 is recessed to the front surface 3a side relative to the first locking side 76, the eject arm 22 can be rotated to the front surface 3a side. Therefore, the eject arm 22 can rotate the disk support portion 52 to the vicinity of the disk insertion / removal port 15 and reliably transport the small-diameter disk 2B to the disk insertion / removal position where the center hole 2a faces the outside.

  Further, since the disc transport mechanism 20 regulates the ejection positions of the large-diameter disc 2A and the small-diameter disc 2B by engaging the eject arm 22 with the first and second engaging sides 76, the disc insertion mechanism The disc can be ejected stably without the dislocation position varying.

The locking groove 78 provided in the loading cam plate 23 for engaging and disengaging the lock pin 44 has an opening for engaging and disengaging on the side surface on the back side of the guide plate 71 and is formed in a substantially arc shape toward the front surface side. Yes. The slide guide rail 24 is locked when the lock pin 44 is engaged from the opening of the lock groove 78, the slide in the d ₁ direction is restricted, and the lock pin 44 is unlocked to release the d ₁ direction. Can be slid.

Then, the slide guide rails 24, in the initial state to wait for insertion of the optical disc 2 by being slid in the arrow d ₂ direction by the coil spring 79, the arrow b ₂ loading is rotationally biased in a direction the cam plate 23 The lock pin 44 is engaged with the lock groove 78.

When small-diameter disk 2B is inserted, the rotation of the loading cam plate 23 is held in a restricted state, the locked state is maintained, the slide guide rails 24, slide in the d ₁ direction is restricted. Therefore, the slide guide rail 24 can guide the small-diameter disk 2B straight.

When the large-diameter disk 2A is inserted, since the loading cam plate 23 in accordance with the rotation of the loading arm 21 is also rotated in the arrow b ₁ direction, the lock pin 44 is retracted from the lock groove 78. Therefore, the slide guide rails 24, the lock is released by the locking pin 44 is slid in the d ₁ direction with the insertion of the large-diameter disk 2A.

  Further, the guide plate 71 is formed with a locking projection 81 and a spring locking side 82 for locking a centering spring 80 that urges the slide guide rail 24 to the centering position on an upper surface 71 a facing the top cover 5. ing. The centering spring 80 assists the centering positioning by the slide guide rail 24 when the large-diameter disk 2A is centered. In the centering spring 80, an annular portion 80a is inserted into a locking projection protruding from the upper surface 71a of the guide plate 71, and one end 80b is locked to a spring locking side 82 formed on the guide plate 71. The end 80 c protrudes to the left side from the opening opened in the guide portion 70.

The other end 80c, the tip is formed in an annular shape, the slide guide rails 24 with the insertion of the large-diameter disk 2A is slid in the arrow d ₁ direction, it is brought into contact with the left side surface 3c of the device body 3. When the other end 80c is brought into contact with the left side surface 3c, the centering spring 80, the biasing force by being deflected occurs, to urge the slide guide rails 24 in the arrow d ₂ direction. Therefore, the slide guide rails 24 may be opposed to the pressing force of the arrow d ₁ direction by the large-diameter disk 2A and maintains the centering position.

The slide guide rail 24 is slidably supported by the chassis plate 90 and is formed with first and second slide rollers 85 and 86 that enable smooth sliding. The first slide roller 85 is composed of a roller member fitted to a guide shaft 88 projecting from the lower surface 70 b of the guide portion 70, and is inserted into the first slide guide groove 95 formed in the chassis plate 90 to be rolled. Move. The second slide roller 86 is composed of a roller member fitted to a guide shaft 89 protruding from the lower surface 71 b of the guide plate 71, and is inserted into a second slide guide groove 96 formed in the chassis plate 90 for rolling. Move. As shown in FIG. 11B, the other end of the coil spring 79 whose one end is locked to the chassis plate 90 is locked to the guide shaft 89. Thus slide guide rails 24 are slid urged to constantly arrow d ₁ direction by the urging force of the coil spring 79.

  As shown in FIG. 10B, the slide guide rail 24 has a guide pin 87 inserted into a third slide guide groove 97 formed in the chassis plate 90 at the end of the lower surface 71b of the guide plate 71. Projected. That is, the slide guide rail 24 is supported by the chassis plate 90 at three points, the first and second slide rollers 85 and 86 and the guide pin 87.

[Subchassis unit]
Next, the sub chassis unit 25 that slidably supports the slide guide rail 24 will be described. As shown in FIGS. 11A and 11B, the sub-chassis unit 25 includes a chassis plate 90 that supports the slide guide rail 24, a slide arm 91 that operates in conjunction with the main slider 152, and a slide that is slid by the slide arm 91. An operation plate 92 and a position regulating plate 93 that regulates the position of the slide guide rail 24 in conjunction with the slide operation plate 92 are provided. Then, the sub-chassis unit 25, slides the guide rail 24 while slidably supported in the arrow d ₁ direction and d ₂ directions substantially perpendicular to the conveying direction of the optical disc 2, depending on the diameter of the optical disc 2 to be inserted, conveyed The slide position is restricted during the stroke.

  As shown in FIGS. 12A and 12B, the chassis plate 90 supports the slide guide rail 24, a slide arm 91, a slide operation plate 92, and a position regulating plate 93, which will be described later, and is attached to the bottom case 4. As a result, it is fixed to the back surface 3b side of the apparatus main body 3. The chassis plate 90 is formed with first to third slide guide grooves 95 to 97 that support the slide guide rail 24 in the left-right direction. The first slide guide groove 95 is inserted through the first slide roller 85 provided in the guide portion 70, and the second slide guide groove 96 is inserted through the second slide roller 86 provided in the guide plate 71. The third slide guide groove 97 is inserted with a guide pin 87 provided at the end of the guide plate 71.

Chassis plate 90, first to the first to third slide guide grooves 95 to 97, by the second sliding roller 85, 86 and the guide pin 87 is inserted, arrow _{d 1} and _{d 2} of the slide guide rails 24 Supports slidable in the direction. At this time, since the first and second guide rollers 85 and 86 roll in the first and second slide guide grooves 95 and 96, the slide guide rail 24 slides smoothly without sliding resistance. Can do.

  Further, the chassis plate 90 is formed with a first insertion hole 99 through which the rotation assist pin 59 protruding from the eject arm 22 is inserted. The chassis plate 90 is formed with a second insertion hole 100 through which the locking pin 53 protruding from the eject arm 22 is inserted. The chassis plate 90 has a third insertion hole 101 through which the lock pin 44 of the loading cam plate 23 is inserted. Each of the first to third insertion holes 99 to 101 is opened in an arc shape according to the rotation area of the rotation auxiliary pin 59, the locking pin 53 or the lock pin 44.

  Further, the chassis plate 90 is formed with a locking piece 102 at one end of the coil spring 79 at the right edge. The chassis plate 90 is formed with a switch hole 94 on the left side edge so that the second large-diameter disk detection switch 11b faces upward.

  The chassis plate 90 has an opening 103 through which the switch operation cam portion 60 of the eject arm 22 is inserted. In the vicinity of the opening 103, a bearing portion 104 is erected so as to rotatably support the support shaft 51 of the eject arm 22. The bearing portion 104 has a hollow cylindrical shape, protrudes from the lower surface side of the chassis plate 90, opens at one end of the cylinder on the upper surface side, and the support shaft 51 of the eject arm 22 is inserted therethrough. Further, as shown in FIG. 11A, the bearing 104 is fitted with a coil spring 55 that rotationally biases the eject arm 22 on the outer peripheral surface.

As shown in FIG. 12B, a support pin 105 that rotatably supports a slide arm 91 that is linked to the main slider 152 is attached to the lower surface side of the chassis plate 90. As shown in FIGS. 13A and 13B, the slide arm 91 is formed in a substantially L shape as a whole, and has a shaft hole portion 110 that is pivotally supported by the support pin 105 at one end and the other end. An engagement shaft portion 111 that engages with the main slider 152 is formed, and an engagement pin 112 that engages with the slide operation plate 92 is provided at the corner portion. Slide arm 91, the main slider 152 slides, the engaging shaft portion 111 is driven to rotate in the arrow _{e 1} direction and _{e 2} direction supporting pin 105 as a pivot. Thereby the slide arm 91 slides the slider board 92 in the arrow _{f 1} direction and the _{f 2} direction via the engagement pin 112.

  As shown in FIGS. 25 and 34, the slide operation plate 92 slid by the slide arm 91 assists in releasing and ejecting the optical disk 2 by the eject arm 22 and sliding the position restricting plate 93. As shown in FIGS. 14A and 14B, the slide operation plate 92 has a substantially rectangular plate shape, and is formed with a plurality of long holes 116 that are inserted into and supported by the support protrusions 115 protruding from the chassis plate 90. Has been. The long hole 116 is formed over the slide direction of the slide operation plate 92, and the support convex portion 115 is slidably inserted therethrough.

Further, the slide operation plate 92 has an engagement hole 117 with which the engagement pin 112 of the slide arm 91 is engaged. The engagement hole 117 is formed in a direction substantially orthogonal to the slide direction of the slide operation plate 92, and the engagement pin 112 of the slide arm 91 is engaged therewith. Accordingly, when the slide arm 91 rotates in conjunction with the main slider 152, the slide operation plate 92 slides in the engagement hole 117 along the long hole 116, and the arrow f in FIG. slides in the _first direction and _{f 2} directions.

The slide operation plate 92 is formed with an operation cam hole 118 for operating the position restricting plate 93. The operation cam hole 118 includes a non-operation portion 118 a extending in the sliding direction of the slide operation plate 92, and an operation portion 118 b that is inclined with respect to the slide direction and slides the position restriction plate 93 in conjunction with the slide of the slide operation plate 92. Are formed continuously. Then, the slider board 92, when slid in the arrow _{f 1} direction by the slide arm 91, 11 the position regulating plate 93 by the operation section 118b of the operation cam hole 118 (b) in the arrow _{g 1} direction and _{g 2} directions Slide to.

  The slide operation plate 92 is formed with a release piece 119 that separates the disc support 52 from the outer peripheral surface of the optical disc 2 by pressing the locking pin 53 of the eject arm 22. The release piece 119 includes a first release piece 119a formed according to the rotation position of the locking pin 53 when the large-diameter disk 2A is inserted, and the rotation position of the locking pin 53 when the small-diameter disk 2B is inserted. And a second release piece 119b formed according to the above.

Slider board 92, when being slid into the direction of arrow f ₂ in the insertion stand-by state of the optical disc 2, the release piece 119 is retracted from the rotation weight region of the locking pin 53. When the large-diameter disk 2A is inserted and the eject arm 22 is rotated to the centering position, the locking pin 53 is positioned on the slide operation plate 92 at a position facing the first release piece 119a. Accordingly, the slider board 92 presses the lock pin 53 by sliding in the arrow f ₁ direction, and further rotating the eject arm 22 to c ₁ direction, the outer peripheral surface of the disk support portion 52 large-diameter disk 2A Can be separated from

When the small-diameter disk 2B is inserted and the eject arm 22 is rotated to the centering position, the slide operation plate 92 has the locking pin 53 positioned at a position facing the second release piece 119b. Accordingly, the slider board 92 presses the lock pin 53 by sliding in the arrow f ₁ direction, and further rotating the eject arm 22 to c ₁ direction, the disk support portion 52 from the outer peripheral surface of the small-diameter disk 2B Can be separated.

The slide operation plate 92 is engaged with the rotation assist spring 120. Rotating auxiliary spring 120 by energizing the rotating auxiliary pin 59 of the eject arm 22 during ejection of the optical disk 2, to assist the rotation in the arrow c ₂ direction of the eject arm 22, securely inserted optical disk 2 It is to be discharged to the escape position. As the rotation assisting spring 120, for example, a torsion coil spring is used, and the annular portion 120a is inserted into the engaging protrusion 123 projecting from the slide operation plate 92 and the one end 120b is protruded from the slide operation plate 92. When the slide operation plate 92 is slid, the one end 120 b can be separated from and connected to the rotation assist pin 59 of the eject arm 22.

Specifically, pivoting the auxiliary spring 120, in the insertion stand-by state of the optical disc 2 is at a position spaced apart from the pivot auxiliary pin 59 of the eject arm 22 is rotationally biased in the arrow c ₂ direction. Then, the optical disc 2 is inserted, the slider board 92 with the eject arm 22 is rotated in the c ₁ direction is slid to the f ₁ direction, turning the auxiliary spring 120, rotation of the rotary auxiliary pins 59 It moves in the same direction as the direction and does not hinder the rotation of the eject arm 22. When the slide operation plate 92 is slid in the direction f ₂ in conjunction with the rotation of the slide arm 91 when the optical disk 2 is ejected, the rotation assist spring 120 moves in the same direction as the rotation assist pin 59.

At this time, the eject arm 22 is gradually rotated in the c ₂ direction while pressing the outer circumferential surface of the optical disk 2 receives the urging force of the coil spring 55, but extruding a sufficient optical disc 2 only the urging force of the coil spring 55 because it can not, the amount rotation of the rotating auxiliary pin 59 relative to the sliding amount of the f ₂ direction of the slider board 92 is short. Thus, turning the auxiliary spring 120 abuts a pivot auxiliary pins 59, by pressing, to assist the rotation in the arrow c ₂ direction of the eject arm 22. When the optical disk 2 is conveyed to the disk insertion position by the user, by the main slider 152 is slightly slid in the arrow h ₁ direction, since the slider board 92 is slid in the f ₁ direction in conjunction, rotates aid The spring 120 is held at a position separated from the rotation assist pin 59.

Further, in the insertion stand-by state of the optical disc 2, the optical disk 2 even though the power of the disc drive apparatus 1 is not turned on is inserted, pivoting the auxiliary in accordance with the rotation of the c ₁ direction of the eject arm 22 The pin 59 contacts the rotation assist spring 120. At this time, since the slide operation plate 92 is not slid in the direction f ₁ , the rotation assist spring 120 is in contact with the rotation assist pin 59 and pressed to move the eject arm 22 in the direction of arrow c ₂ for ejecting the optical disc 2. Push back. Thus, turning the auxiliary spring 120, when the optical disk 2 when the power is not turned on is inserted, rotated the eject arm 22 to c ₂ direction, it is possible to prevent erroneous insertion of the optical disc 2.

The position restricting plate 93 that is slid by the slide operation plate 92 restricts the slide guide rail 24 to a position corresponding to the disc diameter when the optical disc 2 is centered. As shown in FIGS. 15 (a) and 15 (b), the position restricting plate 93 has a substantially rectangular plate shape, and a plurality of long holes 122 that are inserted and supported by support convex portions 121 protruding from the chassis plate 90 are formed. ing. The long hole 122 is formed over the sliding direction of the position restricting plate 93, and the support convex portion 121 is slidably inserted therethrough. Position regulating plate 93, by being supported by the supporting protrusion 121, the chassis plate 90 becomes the sliding direction and the direction substantially perpendicular to the slide guide rail 24 FIG 11 (b) in the arrow g ₁ direction and g ₂ directions It is possible to slide.

The position restricting plate 93 has a cam pin 124 protruding from the operation cam hole 118 of the slide operation plate 92. As the cam pin 124 moves along the operation cam hole 118, the position restricting plate 93 slides in the arrow g ₁ direction or the g ₂ direction along the long hole 122 according to the slide of the slide operation plate 92.

  Further, the position restricting plate 93 is formed with a restricting side 125 for restricting sliding by the guide shaft 88 of the slide guide rail 24 coming into contact with the side surface facing the left side surface 3c of the device body 3, and the right side surface 3d side of the device body 3 A rail biasing spring 126 for biasing the guide shaft 88 of the slide guide rail 24 is provided on the side surface of the slide guide rail 24. The rail urging spring 126 has an annular portion 126a inserted through a locking protrusion 127 protruding from the position restricting plate 93, and one end 126b locked to a locking piece 128 of the position restricting plate 93. The end 126c protrudes in the vicinity of the guide shaft 88.

Position regulating plate 93, the optical disc 2 is drawn into the apparatus main body 3, by being slid in the arrow g ₁ direction, it enters the slide area of the guide shaft 88 of the slide guide rail 24, depending on the disc diameter regulation The side 125 or the rail biasing spring 126 comes into contact with the guide shaft 88. The position regulating plate 93, by being slid in the arrow g ₂ direction and retracted from the sliding region of the guide shaft 88, separated from the guide shaft 88.

Regulatory edge 125 is for regulating a slide guide rail 24 which slides in the arrow d ₁ direction by the large-diameter disk 2A is inserted into the centering position of the large-diameter disk 2A. Regulatory edge 125, the slide guide rails 24 with the insertion of the large-diameter disk 2A is slid in the arrow d ₁ direction, after the guide shaft 88 is moved to the left side surface 3c side of the restricting side 125 of the arrow g ₁ direction It slides and is positioned on the first slide guide groove 95 formed in the chassis plate 90 through which the guide shaft 88 is inserted. Thus, regulation edge 125, the slide guide rails 24 are slid in the arrow d ₂ direction by the urging force of the coil spring 79 guide shaft 88 abuts to restrict any further sliding in the arrow d ₂ direction. The slide guide rail 24 is held at the centering position of the large-diameter disk 2 </ b> A when the guide shaft 88 abuts on the restriction side 125 and the slide is restricted.

The rail urging spring 126 is formed of, for example, a torsion coil spring, and the annular portion is inserted into a support pin protruding from the position restricting plate 93, one end is retained by the retaining piece of the position restricting plate 93, and the other end is disposed on the right side. It is held so as to protrude to the surface 3d side. The other end of the rail biasing spring 126 is a biasing unit for biasing the guide shaft 88, the position regulating plate 93 is slid to g ₁ direction, the slide guide rails 24 in the insertion waiting state guide shaft 88 It is formed so as to be able to abut. Such rail urging spring 126, the small-diameter disk 2B is inserted, by the position regulating plate 93 is slid in the arrow g ₁ direction, the guide shaft 88 of the slide guide rail 24 is locked in the insertion waiting position Contact from the back side. At this time, since the guide shaft 88 is located on the right side with respect to the rail biasing spring 126, the guide shaft 88 is biased toward the right side when the rail biasing spring 126 abuts. The slide guide rail 24 is held at the centering position of the small-diameter disk 2 </ b> B by the guide shaft 88 being biased by the rail biasing spring 126.

Such position regulating plate 93, the optical disc 2 is inserted, the main slider 152 is driven, is slid in the arrow g ₁ direction via the slide arm 91 and the slider board 92, a guide shaft 88 of the slide guide rails 24 Abutted. Therefore, the position restricting plate 93 restricts the position of the slide guide rail 24 only when the optical disc 2 is centered, and is separated when the optical disc 2 is inserted or ejected. There is no hindrance by applying a load.

<3. Base unit>
Next, the base unit 130 for recording and / or reproducing information signals with respect to the optical disc 2 will be described. The base unit 130 constitutes a drive main body of the disk drive device 1 and has a traverse chassis 131 formed of a substantially rectangular frame body as shown in FIGS. 16 (a) and 16 (b). By arranging 131 in the bottom case 4, one end side in the longitudinal direction is positioned at the approximate center of the apparatus main body 3. The base unit 130 has, on one end side in the longitudinal direction, a disk mounting portion 132 to which the optical disk 2 inserted into the apparatus main body 3 from the disk insertion / removal port 15 is mounted, and the optical disk 2 mounted to the disk mounting portion 132. And a disk rotation drive mechanism 133 that rotates the disk. The base unit 130 also has an optical pickup 135 that writes or reads signals to and from the optical disk 2 that is rotationally driven by the disk rotation driving mechanism 133, and the optical pickup 135 that is transported in the longitudinal direction. A pickup feeding mechanism 136 that feeds in the radial direction is provided, and these are provided integrally with the traverse chassis 131. The base unit 130 is moved up and down with respect to the optical disc 2 by the drive mechanism 150 (to be described later) of the traverse chassis 131.

  The base unit 130 is supported by the bottom case 4 so that the disk mounting portion 132 is positioned substantially at the center, and faces the disk transport area. The base unit 130 can be moved up and down by a drive mechanism 150 to be described later. In the initial state, the base unit 130 is positioned below the optical disk 2 inserted into the apparatus main body 3 from the disk insertion / removal opening 15, and the loading of the optical disk 2 is performed. Raised with the operation, the optical disk 2 is rotatably engaged. After the recording / reproducing operation, the base unit 130 is lowered by the drive mechanism 150 to be disengaged from the optical disk 2 and retracted from the transport area of the optical disk 2.

  The traverse chassis 131 is formed by punching a sheet metal into a predetermined shape and bending the periphery slightly downward. On the main surface of the traverse chassis 131, a substantially semicircular table opening 131a for facing a turntable 132a of a disk mounting portion 132 described later upward, and an objective lens 135a of an optical pickup 135 described later upward. A substantially rectangular pick-up opening 131b to be exposed is continuously formed. As shown in FIG. 16A, a decorative plate 137 having openings corresponding to the openings 131a and 131b is attached to the upper surface of the traverse chassis 131.

  Further, the traverse chassis 131 is provided with support pieces 138 supported by the bottom case 4 on both sides of the side surface facing the front surface 3 a of the apparatus main body 3. The traverse chassis 131 is supported so that the disk mounting portion 132 is swingable in the vertical direction by fitting the support piece 138 to the support convex portion 139 erected on the bottom case 4. The support piece 138 has an insertion hole through which the support convex portion 139 is inserted, and a damper 140 is fitted in the insertion hole. The damper 140 has a hollow portion through which the support convex portion 139 can be inserted. Further, the support convex portion 139 is formed with a screw hole into which the mounting screw 139a is screwed.

  In the traverse chassis 131, the support piece 138 is inserted into the support convex portion 139 via the damper 140, and the mounting screw 139a is screwed into the screw hole of the support convex portion 139 from above the damper 140. 4 is attached.

  The traverse chassis 131 is located on the side of the disc mounting portion 132 on the side facing the main slider 152, which will be described later, and is engaged with and supported by the first cam slit 160 of the main slider 152. 141 and a second support shaft 142 that is located on the side of the disk mounting portion 132 on the side facing the sub-slider 153 and is supported by being engaged with the second cam slit 165 of the sub-slider 153. Yes. The first support shaft 141 and the second support shaft 142 are inserted through the slits of the elevating guide walls 14 and 14 formed in the bottom case 4 and engage with the first and second cam slits 160 and 165.

  Accordingly, in the traverse chassis 131, the first support shaft 141 slides in the first cam slit 160 in conjunction with the slide of the main slider 152 and the sub slider 153, and the second support shaft 142 is the second support shaft 142. By sliding in the cam slit 165, the disk mounting portion 132 side can be moved up and down with the support convex portion 139 as a fulcrum. At this time, the traverse chassis 131 is guided to move in the vertical direction by the first and second support shafts 141 and 142 being guided by the elevating guide walls 14 and 14.

  The disc mounting portion 132 has a turntable 132a that is rotationally driven by a disc rotation drive mechanism 133, and a chucking mechanism 143 for mounting the optical disc 2 is provided at the center of the turntable 132a. The chucking mechanism 143 includes an engaging protrusion 143a that is engaged 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 143a. The optical disc 2 is held on the turntable 132a.

  The disk rotation drive mechanism 133 includes a flat spindle motor 133a that rotates the optical disk 2 integrally with the turntable 132a. The spindle motor 133a includes a turntable 132a provided on the upper surface portion and a table of the traverse chassis 131. It is attached to the lower surface of the traverse chassis 131 via a support plate 133b so as to slightly protrude from the opening 131a.

  The optical pickup 135 condenses the light beam emitted from the semiconductor laser serving as the light source by the objective lens 135 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.

  Further, the optical pickup 135 drives an objective lens such as a biaxial actuator that drives the objective lens 135a to be displaced in an optical axis direction (referred to as a focusing direction) and a direction orthogonal to a recording track of an optical disc (referred to as a tracking direction). Based on the detection signal from the optical disc 2 detected by the above-described photodetector, the biaxial actuator displaces the objective lens 135a in the focusing direction and the tracking direction, and on the signal recording surface of the optical disc 2. Further, drive control is performed such as a focus servo for focusing the objective lens 135a and a tracking servo for causing the spot of the light beam condensed by the objective lens 135a to follow the recording track. As the objective lens driving mechanism, in addition to such focusing control and tracking control, the signal of the optical disc 2 is irradiated so that the light beam condensed by the objective lens 135a is perpendicularly irradiated to the signal recording surface of the optical disc 2. A triaxial actuator that can adjust the inclination (skew) of the objective lens 135a with respect to the recording surface may be used.

  The pickup feeding mechanism 136 includes a pickup base 144 on which the optical pickup 135 is mounted, a pair of guide shafts 145a and 145b that support the pickup base 144 so as to be slidable in the radial direction of the optical disc 2, and the pair of guide shafts 145a and 145a. And a base drive mechanism 146 for driving the pickup base 144 supported by the 145b in the radial direction of the optical disc 2.

  Of the pair of guide shafts 145a and 145b, the pickup base 144 is formed with a pair of guide pieces 147a and 147b in which a guide hole for inserting one guide shaft 145a is formed, and a guide groove for sandwiching the other guide shaft 145b. The guide pieces 148 are formed so as to protrude from the side surfaces facing each other. As a result, the pickup base 144 is slidably supported by the pair of guide shafts 145a and 145b.

  The pair of guide shafts 145 a and 145 b are arranged on the lower surface of the traverse chassis 131 so as to be parallel to the radial direction of the optical disc 2, and the pickup base 144 from which the optical pickup 135 faces through the pickup opening 131 b of the traverse chassis 131. Is guided over the inner and outer peripheries of the optical disc 2.

  The base drive mechanism 146 converts the rotational drive of the drive motor 149 attached to the traverse chassis 131 to linear drive via a gear or a rack (not shown), and the pickup base 144 is converted into a pair of guide shafts 145a and 145b. For example, a stepping motor having a lead screw is used.

<4. Drive mechanism>
Next, the driving mechanism 150 that supplies driving force to the disk transport mechanism 20 will be described. The drive mechanism 150 includes a drive motor 151, a main slider 152 that slides in the bottom case 4 in response to the drive force of the drive motor 151, a sub-slider 153 that moves the base unit 130 up and down in cooperation with the main slider 152, A gear train 154 that transmits the driving force of the drive motor 151 to the main slider 152 is provided in the bottom case 4. The drive mechanism 150 slides the main slider 152 by the drive motor 151 to drive the disk transport mechanism 50 and to move the base unit 130 up and down.

When the optical disk 2 is inserted to a predetermined position, the drive motor 151 operates the small-diameter disk detection switch 11c and the first large-diameter disk detection switch 11a by the switch operation cam portion 60 of the eject arm 22, and the main slider 152 is illustrated. in 11 (b) it is driven in the forward direction to move in the arrow _{h 1} direction. The drive motor 151, the eject operation is driven in the reverse direction to move the main slider 152 11 in the arrow h ₂ direction (b). The main slider 152 is driven in the direction of the arrow h ₁ or h _{2 in} FIG. 11 according to the loading and ejection of the optical disc 2, thereby driving each arm of the disc transport mechanism 20, and the base slider 152 together with the sub slider 153. The unit 130 is driven. The gear train 154 meshes with the rack portion 161 formed on the main slider 152 and transmits the driving force of the drive motor 151 to the main slider 152 via the rack portion 161.

  As shown in FIG. 17A, the main slider 152 is made of a resin member that is formed in a substantially rectangular parallelepiped shape, and a loading cam 155 that engages a slider pin 45 formed on the loading cam plate 23 on the upper surface 152a. And a rotation cam 156 that engages with the slide arm 91 of the sub chassis unit 25 is formed.

Loading cam 155 includes a cam portion 155a for the large-diameter disk slider pin 45 of the loading cam plate 23 is engaged to be largely rotated in the arrow b ₂ direction with the insertion of the large-diameter disk 2A, the insertion of the small-diameter disk 2B Accordingly, a small-diameter disk cam portion 155b that engages with the slider pin 45 of the loading cam plate 23 that maintains the initial position is formed. Loading cam 155, when the main slider 152 is slid in the arrow h ₁ direction toward the front surface 3a side of the apparatus main body 3 rotates the loading cam plate 23 according to the diameter of the inserted optical disc 2, the loading arm 21 The optical disk 2 is pulled in by.

The rotating cam 156 is a cam groove with which the engaging shaft portion 111 formed on the slide arm 91 is engaged. The main slider 152, the engaging shaft portion 111 in the rotating cam 156 is engaged, and FIG. 11 (b) arrow _{e 1} direction the slide arm 91 when slid in the arrow _{h 1} direction supporting pin 105 as a supporting shaft Turn to. The main slider 152 rotates the slide arm 91 when slid in the arrow h ₂ direction arrow e ₂ direction in the drawing.

The main slider 152 has a slide cam 157 that slides the sub slider 153 on the lower surface 152b. The slide cam 157 is a view in which the sub-slider 153 is moved in the left-right direction of the apparatus main body 3 in conjunction with the slide of the main slider 152 when the engaging protrusion 163 protruding from the tip of the sub-slider 153 is engaged. 11 (b) in sliding in the arrow _{i 1} direction or _{i 2} direction. In the main slider 152, a slide guide groove 159 is formed on the lower surface 152b along the longitudinal direction so that the slide direction is guided by the support rail 13 protruding from the bottom case 4.

  Further, the main slider 152 is engaged with the first cam slit 160 through which the first support shaft 141 projecting from the traverse chassis 131 of the base unit 130 is inserted into the side surface 152 c on the base unit 130 side, and the gear train 154. A mating rack portion 161 is formed.

Such a main slider 152 is arranged between the right side surface of the bottom case 4 and the base unit 130 on the bottom surface of the bottom case 4. The main slider 152 is positioned below the optical disc 2 inserted into the apparatus main body 3 from the disc insertion / removal opening 15 and has an upper surface portion slightly lower than the deck portion 4a. Yes. The main slider 152 is slidably driven in the directions of the arrows h ₁ and h _{2 that} are the front-rear direction of the apparatus body 3 via a drive motor 151 and a gear train 154 provided on the bottom surface of the bottom case 4.

  In the drive mechanism 150, the loading cam plate 23, the loading arm 21 engaged with the loading cam plate 23, the slide guide rail 24, and the slide arm 91 of the sub chassis unit 25 are interlocked with the sliding operation of the main slider 152. To operate. Accordingly, the drive mechanism 150 pulls the optical disk 2 into the apparatus main body 3 from the disk insertion / removal port 15 according to the slide of the main slider 152, a centering operation for holding the optical disk 2 at the centering position, and loading the optical disk 2 to the disk A chucking operation for mounting on the unit 132, a release operation for allowing the optical disk 2 to rotate, and an ejecting operation for ejecting the optical disk 2 from the disk mounting unit 132 to the outside of the disk insertion / removal port 15 are performed.

As shown in FIGS. 18A and 18B, the sub-slider 153 interlocked with the main slider 152 supports the second support shaft 142 projecting from the traverse chassis 131 of the base unit 130 and the main slider. 152 and engaged, and is slidably disposed in FIG. 11 (b) arrow i ₁ direction or i ₂ direction perpendicular to the loading direction of the optical disk 2 in accordance with the sliding movement of the main slider 152.

As shown in FIG. 18, the sub-slider 153 is made of a long plate member made of synthetic resin, and an engaging protrusion 163 that engages with the slide cam 157 of the main slider 152 is provided on the upper surface 153a. ing. The sub-slider 153 is slid in the direction of the arrow i ₁ or i ₂ in conjunction with the sliding operation of the main slider 152 by being guided by the elevating guide wall 14 formed on the bottom surface of the bottom case 4. .

  The sub-slider 153 has a first cam slit 160 formed on the main slider 152 and a second cam slit 165 for moving the base unit 130 in the longitudinal direction on the side surface 153b on the disk insertion / removal port 15 side. Is formed.

  The main slider 152 and the sub slider 153 raise the base unit 130 to the chucking position where the optical disk 2 positioned at the disk mounting position is mounted on the turntable 132a of the disk mounting part 132, and lower the base unit 130 to move the disk. Recording / reproduction for recording or reproducing signals to / from the optical disk 2 by positioning the chucking release position for removing the optical disk 2 from the turntable 132a of the mounting portion 132 and the base unit 130 between the chucking position and the chucking release position. The base unit 130 is moved up and down between the positions.

  Specifically, the main slider 152 and the sub-slider 153 include a first support shaft 141 and a second support shaft 142 that protrude from the traverse chassis 131 by a first cam slit 160 and a second cam slit 165. The base unit 130 is moved up and down by moving up and down.

  The first cam slit 160 formed in the main slider 152 includes a lower horizontal surface portion 160a corresponding to the chucking release position, an upper horizontal surface portion 160b corresponding to the recording / reproducing position, and the lower horizontal surface portion 160a and the upper horizontal surface portion 160a. An inclined surface portion 160c that connects the horizontal surface portion 160b and that corresponds to the chucking position is formed, and a first support shaft 141 that protrudes from the traverse chassis 131 is slidably inserted.

  The second cam slit 165 formed in the sub-slider 153 includes a lower horizontal surface portion 165a corresponding to the chucking release position, an upper horizontal surface portion 165b corresponding to the recording / reproducing position, and the lower horizontal surface portion 165a and the upper horizontal surface portion 165a. An inclined surface portion 165c corresponding to the chucking position is formed to connect the horizontal surface portion 165b, and a second support shaft 142 protruding from the traverse chassis 131 is slidably inserted.

  The inclined surface portions 160c and 165c of the first and second cam slits 162 and 165 are provided up to a position higher than the position of the upper horizontal surface portions 160b and 165b. , 165b. As a result, the base unit 130 guided by the first and second cam slits 162 and 165 slides the main slider 152 and the sub-slider 153 so that the first and second support shafts 141 and 142 are horizontally lowered. The inclined surface portions 160c and 165c are lifted from the surface portions 160a and 165a and moved from the chucking release position to the chucking position. At this time, the base unit 130 sandwiches the periphery of the center hole 2a of the optical disc 2 conveyed to the disc mounting portion 132 between the turntable 132a and the abutting protrusion 8 provided on the top plate portion 5a of the top cover 5. Chucking is performed. When the main slider 152 and the sub slider 153 are further slid, the first and second support shafts 141 and 142 descend from the inclined surface portions 160c and 165c to the upper horizontal surface portion 165b, so that the base unit 130 records from the chucking position. Move to playback position.

<5. Disc insertion / ejection process>
[Insertion standby state]
Next, the insertion / ejection operation of the optical disc 2 by the disc drive apparatus 1 will be described. First, in the waiting state for inserting the optical disk 2, the main slider 152 is stopped at the home position on the back surface 3 b side of the apparatus body 3. At this time, the main slider 152 is pressing the home position detection switch 11e mounted on the circuit board 10. When the main slider 152 stops at the home position, the sub-slider 153 is also positioned on the right side surface 3d side of the apparatus body 3. The traverse chassis 131 is lowered to the chucking release position when the first and second support shafts 141 and 142 are positioned on the lower horizontal surface portions 160a and 165a of the first and second cam slits 160 and 165. Has been.

Further, by the main slider 152 is stopped at the home position, as shown in FIG. 3, the loading cam plate 23, an arrow b ₂ direction by the urging force of the coil spring 47 is engaged with the engagement projections 48 And the slider pin 45 is turned to the small-diameter disk cam portion 155b side of the loading cam 155 to restrict the turning position. The loading cam plate 23 is rotated in the direction of the arrow b ₂ , so that the lock pin 44 is engaged with the lock groove 78 of the slide guide rail 24.

Further, the loading cam plate 23 is rotated in the direction of arrow b _2, whereby the loading arm 21 is rotated in the direction of arrow a ₂ where the guide roller 33 opens to the right side surface 3 d side of the apparatus main body 3. Thus, the loading arm 21, when the optical disc 2 is inserted, the guide roller 33 is pressed by the optical disc 2 is prevented from being rotated in the arrow a ₁ direction.

The slide guide rails 24, while being slid in the arrow d ₂ direction as the right side of the apparatus body 3 by a coil spring 79, the first slide guide groove in which the first sliding roller 85 is formed in the chassis plates 90 slide position of the arrow d ₂ direction is restricted by contacting the right end of the 95. Slide guide rail 24, by being slid in the arrow d ₂ direction, the lock pin 44 of the loading cam plate 23 that is rotationally biased in the arrow b ₂ direction is engaged with the lock groove 78, the arrow d ₁ direction Slide to is regulated.

The eject arm 22 receives a biasing force of the coil spring 55, and the disk support portion 52 is biased to rotate in the direction of arrow c <b> ₂ facing the front surface 3 a side of the apparatus body 3. At this time, the eject arm 22 by the lock pin 53 is engaged with the second Kakaritomehen 77 of the slide guide rails 24 are slid in the arrow d ₂ direction, the disc supporting portion 52 is disc slot It is rotated to the vicinity of 15. Incidentally, the eject arm 22, while being rotated in the arrow c ₂ direction until engaged with the second Kakaritomehen 77, by sliding operation plate 92 interlocked with the main slider 152 is stopped at the initial position The rotation assist pin 59 is separated from the rotation assist spring 120 of the slide operation plate 92.

Further, the slide arm 91 is moved in the direction of arrow e ₂ with the support pin 105 as a support shaft via the engagement shaft portion 111 that engages with the rotation cam 156 of the main slider 152 when the main slider 152 stops at the home position. Has been rotated. By sliding the arm 91 is rotated in the arrow e ₂ direction, the slider board 92 is stopped is slid in the arrow f ₂ direction initial position. By sliding the operating plate 92 is stopped at the initial position, the position regulating plate 93 is slid in the arrow g ₂ directions. Therefore, the rail biasing spring 126 of the position restricting plate 93 is separated from the guide shaft 88 of the slide guide rail 24 and is not loaded.

[Small diameter disc insertion / ejection process]
In this insertion standby state, when the power is turned on and the small-diameter disk 2B is inserted into the disk insertion / removal port 15, the eject arm 22 first supports the insertion end of the small-diameter disk 2B by the pickup section 56 of the disk support section 52. In addition to preventing sinking to the bottom case 4 side due to oblique insertion, guide to the first support roller 57 side. When the first support roller 57 supports the insertion end of the small-diameter disk 2B, as shown in FIG. 19, in response to the insertion of the small-diameter disk 2B, the eject arm 22, arrow c ₁ against the urging force of the coil spring 55 It is rotated in the direction. As shown in FIG. 20, the eject arm 22, when it is rotated in the arrow c ₁ direction, the pressing of the small-diameter disk detection switch 11c by the switch operating cam portion 60 is released, the first large-diameter disk detection switch 11a It is also rotated to a position away from.

When pressed into the small-diameter disk detection switch 11c is released, the drive motor 151 is rotated forward, the main slider 152 is slid in the arrow h ₁ direction toward the front surface 3a side of the device body 3. At this time, the loading arm 21, since the small-diameter disk 2B is inserted, without being rotated in the arrow a ₂ direction, remain the loading cam plate 23 is also biased rotated in the arrow b ₂ direction is doing. Thus, the loading cam plate 23, the slider pin 45 is guided by the cam portion 155b small-diameter disk, as shown in FIG. 21, and rotated in the arrow b ₂ direction, to rotate the loading arm 21 in the arrow a ₁ direction Then, the small-diameter disk 2B is pulled in. At this time, the slide guide rail 24, the lock pin 44 of the loading cam plate 23 is engaged with the lock groove 78, the arrow d ₁ for sliding in the direction is restricted, the rail member 73 to the outer peripheral surface of the small-diameter disc 2B Slide to go straight.

Further, by the main slider 152 is slid in the arrow h ₁ direction, engaging shaft portion 111 slide arm 91 is guided by the rotating cam 156 is rotated in the arrow e ₁ direction, the engagement pin of the slide arm 91 112 are pressed slider board 92 is slid in the arrow f ₁ direction. The position regulating plate 93 which engages the operating cam hole 118 of the slider board 92 is slid in the arrow g ₁ direction, those from the left side surface 3c side guide shaft 88 of the slide guide rails 24 by rail biasing spring 126 Touch. Thus, the slide guide rail 24 is urged in the arrow d ₂ direction by the rail biasing spring 126, together with the rattling is prevented, is held in the centering position of the small-diameter disk 2B.

Eject arm 22, as it is rotated in the arrow c ₁ direction, as shown in FIG. 22 proceeds from the support of the small-diameter disk 2B by the disc supporting portion 52 has a first support roller 57 to the second support roller 58 . That is, the eject arm 22 supports the small-diameter disk 2B by the second support roller 58 in the initial steps of drawing, centering, and discharging the small-diameter disk 2B.

The small-diameter disk 2B is conveyed by the loading arm 21 to a disk mounting position where the turntable 132a of the disk mounting unit 132 and the center hole 2a face each other. At this time, the loading arm 21 draws a small-diameter disk 2B is rotated in the arrow a ₁ direction by the loading cam plate 23 is guided by the cam portion 155b small-diameter disk to the centering position for holding the disk loading position. The slide guide rail 24 is locked to the lock pin 44 of the loading cam plate 23 and is held at the centering position for supporting the small-diameter disk 2B at the disk mounting position by the rail biasing spring 126. The eject arm 22 for supporting the outer peripheral surface of the small-diameter disk 2B by the second support roller 58 is rotationally biased in the arrow c ₂ direction by the coil spring 55, the slide has stopped the small-diameter disk 2B each centering position The guide rail 24 and the loading arm 21 are pressed. As a result, the small-diameter disk 2B is supported at three points to be aligned with the disk mounting position. In the eject arm 22, at the centering position of the small-diameter disk 2B, the locking pin 53 is rotated up to the slide area of the second release piece 119b of the slide operation plate 92 and the slide guide rail 24 is Opposite the second pressing side 75. The locking pin 53 is pressed by the second release piece 119b of the slide operation plate 92 after the chucking operation of the small-diameter disk 2B, and presses the second pressing side 75, thereby ejecting the arm 22 and the slide guide rail. 24 release operations are performed.

At the timing when the centering of the small-diameter disk 2B is completed, the base unit 130 is moved up and down from the chucking release position to the recording / playback position through the chucking position. Specifically, the centering of the small-diameter disk 2B is completed, in association with the slide of the arrow h ₁ direction of the main slider 152, the sub slider 153 engaging projections 163 on the slide cam 157 of the main slider 152 is guided It is slid in the arrow _{i 1} direction. In the traverse chassis 131, the first and second support shafts 141 and 142 have lower horizontal surface portions 160a of the first and second cam slits 160 and 165 formed on the main slider 152 and the sub slider 153, respectively. Guided from 165a to the upper horizontal surface portions 160b and 165b through the inclined surface portions 160c and 165c.

In the traverse chassis 131, the first and second support shafts 141 and 142 move to the tops of the inclined surface portions 160c and 165c, so that the traverse chassis 131 is raised to the chucking position and transported to the disk mounting position. The periphery of 2a is pinched by the turntable 132a and the abutting protrusion 8 formed around the opening 7 of the top plate portion 5a to be chucked on the turntable 132a. Thereafter, when the main slider 152 is sub-slider 153 slides is further slid i ₁ direction to the h ₁ direction, the traverse chassis 131 is lowered from the chucking position to the recording and reproducing position, the operation of recording or reproducing by the user Wait.

When chucking the small-diameter disk 2B is performed, the loading cam plate 23 is guided by the cam portion 155b small-diameter disk main slider 152 and rotated in the arrow b ₁ direction, rotating the loading arm 21 in the arrow a ₂ direction Move. Accordingly, as shown in FIG. 23, in the loading arm 21, the guide roller 33 is separated from the outer peripheral surface of the small-diameter disk 2B.

Further, the slider board 92, by further sliding the _{f 1} direction in conjunction with the sliding of the main slider 152, the second release strip 119b, and pushes the lock pin 53 of the eject arm 22, the eject arm 22 the pivoting the _{c 1} direction. Thereby, in the eject arm 22, the second support roller 58 is separated from the outer peripheral surface of the small-diameter disk 2B.

Also, the locking pin 53 is pressed by the second release strip 119b, presses the second pressing edges 75 of the slide guide rails 24, sliding the slide guide rails 24 in the arrow d ₁ direction. Thereby, as for the slide guide rail 24, the rail member 73 spaces apart from the outer peripheral surface of the small diameter disc 2B. Thereafter, when the user performs a recording or reproducing operation on the small-diameter disk 2B, each part of the base unit 130 is driven, and information signals are recorded and reproduced on the small-diameter disk 2B.

Reproducing operation is completed and the discharge operation of the small-diameter disk 2B is made by the user, first, the driving motor 151 of the drive mechanism 150 is reversed, the main slider 152 is slid in the arrow h ₂ direction in FIG 24. Thus, the loading cam plate 23 is rotated in the arrow b ₂ direction by the slider pins 45 are guided by the cam portion 155b small-diameter disk to rotate the loading arm 21 in the arrow a ₁ direction. Loading arms 21, by being rotated in the arrow a ₁ direction, the guide roller 33 to support the outer peripheral surface of the small-diameter disk 2B.

Further, by the main slider 152 is slid in the arrow h ₂ direction, in conjunction with the rotation of the arrow e ₂ direction of the slide arm 91, the slider board 92 is slid into the direction of arrow f _2. Accordingly, the eject arm 22 is pressed against the locking pin 53 by the second release piece 119b of the slide operation plate 92, and the slide guide rail 24 is pressed against the second pressing side 75 via the locking pin 53. Canceled. Eject arm 22, by pressing of the lock pin 53 is released, is rotated in the arrow c ₂ direction by the urging force of the coil spring 55, the small-diameter disk 2B in the second support roller 58 of the disk support portion 52 Support the outer peripheral surface. The slide guide rails 24, by the pressure on the second pressing edges 75 is released, and slide in the arrow d ₂ direction by the urging force of the coil spring 79, the outer peripheral surface of the rail member 73 is the small-diameter disk 2B and those Touch.

The main slider 152 is further when slid in the arrow h ₂ direction to lower the traverse chassis 131 from the recording and reproducing position together with the sub-slider 153 via a chucking position to the chucking release position. When the traverse chassis 131 is lowered to the chucking release position, the periphery of the center hole 2a is pushed up by the chucking release pin 12 erected on the bottom case 4 of the small-diameter disk 2B, and is disengaged from the engagement protrusion 143a.

Loading arm 21, the main slider 152 is slid in the arrow _{h 2} direction, the loading cam plate 23 is rotated in the arrow _{b 1} direction, it is rotated in the arrow _{a 2} direction. Further, the eject arm 22 is rotated in the arrow c ₂ direction by the urging force of the coil spring 55, it will eject the small-diameter disk 2B. Therefore, the small-diameter disk 2B is ejected straight while sliding on the slide guide rail 24 while being sandwiched between the eject arm 22 and the loading arm 21.

At this time, the eject arm 22, because it supports the small-diameter disk 2B by the second support roller 58, even when pressing the small-diameter disk 2B with the rotation in the arrow c ₂ direction, the small-diameter disk 2B It is possible to suppress the pushing angle of the optical disk 2 with respect to the discharge direction and perform smooth discharge. That is, the small-diameter disk 2B is ejected when the disk support 52 of the eject arm 22 presses the outer peripheral surface of the disk, but the pressing direction of the disk support 52 is inclined with respect to the ejection direction at the start of ejection. Then, the pressing force is dispersed on the left side surface 3c side of the apparatus main body 3. Slide guide rails 24 are in contact with the left side of the small-diameter disk 2B, the slide of the arrow d ₁ direction is locked by the loading cam plate 23. Therefore, if the small diameter disk 2B is pressed using only the first support roller 57, smooth discharge becomes difficult, and an excessive load is applied to the small diameter disk 2B, the eject arm 22, and the slide guide rail 24.

  Therefore, in the disc drive apparatus 1, when the small-diameter disc 2B is ejected, the second support roller 58 is brought into contact with an angle that suppresses the inclination with respect to the ejection direction, thereby enabling smooth ejection.

Further, at this time, as shown in FIG. 25, the eject arm 22 does not have enough force to eject the small-diameter disk 2B only by the urging force of the coil spring 55, so that the rotation assist pin 59 is provided on the slide operation plate 92. urged by turning the auxiliary spring 120 rotates in the arrow c ₂ direction it can be assisted. That is, when the slide operation plate 92 is slid in the direction of the arrow f ₂ in conjunction with the slide of the main slider 152 in the direction of the arrow h ₂ , the rotation assist spring 120 is the same as the rotation direction of the rotation assist pin 59. Slide in the direction. Here, the eject arm 22, because it does not include the force for partitioning discharge the small-diameter disk 2B, the amount of rotation of the rotating auxiliary pin 59 relative to the sliding amount of the f ₂ direction of the slider board 92 is short. Thus, turning the auxiliary spring 120 abuts a pivot auxiliary pins 59, by pressing, to assist the rotation in the arrow c ₂ direction of the eject arm 22.

Further, as shown in FIG. 25, the eject arm 22, when it is rotated in the arrow c ₂ direction by the urging force of the coil spring 55 and the rotation assisting spring 120, a first support roller from the second supporting rollers 58 57 The support of the small-diameter disk 2B moves. Therefore, as shown in FIG. 26, the eject arm 22 can solve the shortage of the extrusion amount caused by pushing out the small-diameter disk 2B only by the second support roller 58, and can carry it to a predetermined disk insertion / removal position.

The eject arm 22, when further rotated in the arrow c ₂ direction, the lock pin 53 is engaged with the second Kakaritomehen 77 of the slide guide rail 24. At this time, the main slider 152 presses the home position detection switch 11e provided on the circuit board 10 to switch from off to on. Next, the main slider 152 presses the eject position detection switch 11d to switch from off to on.

  As a result, the disc transport mechanism 20 stops the small-diameter disc 2B at the disc insertion / removal position in which the center hole 2a faces the outside through the disc insertion / removal port 15, and the eject position detection switch 11d is turned on, whereby It can be seen that the disc 2B has been ejected to the disc insertion / removal position.

Then, as shown in FIG. 27, the eject position detecting switch 11d is switched on, the drive mechanism 150, the driving motor 151 is rotated forward, sliding the main slider 152 in the arrow h ₁ direction. As a result, in the disk transport mechanism 20, the slide operation plate 92 slides in the direction of arrow f ₁ in conjunction with the rotation of the slide arm 91 in the direction of arrow e ₁ , and the rotation assist spring 120 rotates the eject arm 22. Separate from the auxiliary pin 59. When the home position detection switch 11e is switched from on to off again, the disk drive device 1 stops the drive motor 151, the main slider 152 stops at the home position, and returns to the initial insertion standby state.

[Large-diameter disc insertion / ejection process]
Next, the transport process when the power is turned on and the large-diameter disk 2A is inserted into the disk insertion / removal port 15 in the insertion standby state will be described. When the large-diameter disk 2A is inserted, as shown in FIG. 28, first, the loading arm 21 supports the outer peripheral surface of the large-diameter disk 2A by the guide roller 33, and the arrow moves along with the insertion into the apparatus main body 3. a It is rotated in _two directions. When the loading arm 21 is rotated in the arrow a ₂ direction, the loading cam plate 23 is rotated in the arrow b ₁ direction against the urging force of the coil spring 47, as shown in FIG. 29 (a), the lock The pin 44 is retracted from the lock groove 78 of the slide guide rail 24. Thus, the slide guide rail 24, with the insertion of the large-diameter disk 2A slides in the arrow d ₁ direction, presses the second large-diameter disk detection switch 11b which switch lever on the chassis plate 90 are faced , Switch from off to on.

Further, the eject arm 22 supports the insertion end of the large-diameter disk 2A by the pickup section 56 of the disk support section 52, prevents sinking to the bottom case 4 side due to oblique insertion, and the first support roller 57 side. To guide. When the first support roller 57 supports the insertion end of the large-diameter disk 2A, as shown in FIG. 28, the eject arm 22 moves against the biasing force of the coil spring 55 in accordance with the insertion of the large-diameter disk 2A. c Rotate in _one direction. As shown in FIG. 29 (b), the eject arm 22, when it is rotated in the arrow c ₁ direction, switched from on to off to release the pressing of the small-diameter disk detection switch 11c by the switch operating cam 60, the 1 large-diameter disk detection switch 11a is pressed to switch from OFF to ON. The disk drive device 1 can detect that the large-diameter disk 2A has been inserted by turning on the first and second large-diameter disk detection switches 11a and 11b.

When the first large-diameter disk detection switch 11a is depressed, the driving motor 151 is rotated forward, the main slider 152 is slid in the arrow h ₁ direction toward the front surface 3a side of the device body 3. At this time, the loading cam plate 23, because it is rotated in the arrow b ₁ direction, the slider pin 45 is guided by the cam portion 155a for the large-diameter disk, as shown in FIG. 30, rotated in the arrow b ₂ direction I will do it. Shitagatte, the loading cam plate 23 is in conjunction with the sliding main slider 152 rotates the loading arm 21 in the arrow a ₁ Hoko, Iku draws large-diameter disk 2A.

At this time, in the slide guide rail 24, the other end 80 c of the centering spring 80 projecting toward the left side surface 3 c from the opening portion opened in the guide portion 70 is in contact with the left side surface 3 c of the apparatus main body 3. Therefore, the slide guide rails 24, the biasing force is generated in the arrow d ₂ direction by the centering spring 80 is deflected, it is maintained in the centering position to face the pressing force by the large-diameter disk 2A arrow d ₁ direction The Therefore, the slide guide rail 24 can be conveyed straight by sliding the outer peripheral surface of the large-diameter disk 2A on the rail member 73.

Further, as shown in FIG. 31, by the main slider 152 is slid in the arrow h ₁ direction, engaging shaft portion 111 slide arm 91 is guided by the rotating cam 156 is rotated in the arrow e ₁ direction, is pressed by the engaging pin 112 of the slide arm 91 sliding operation plate 92 is slid in the arrow f ₁ direction. The position regulating plate 93 which engages the operating cam hole 118 of the slider board 92 is slid in the arrow g ₁ direction, restricting edge 125 is positioned on the right side surface 3d side of the guide shaft 88 of the slide guide rails 24 . Thus, the slide guide rails 24, slides in the arrow d ₂ direction by the urging force of the coil spring 79 and centering springs 80 is restricted, is fixed to the centering position to support the large-diameter disk 2A to the disc attachment position.

Eject arm 22, as it is rotated in the arrow c ₁ direction, as shown in FIG. 31, from the support of the large-diameter disk 2A by the disc supporting portion 52 has a first support roller 57 to the second support roller 58 Move. That is, the eject arm 22 supports the large-diameter disk 2A by the second support roller 58 in the initial steps of drawing, centering, and discharging the large-diameter disk 2A.

The large-diameter disk 2A is conveyed by the loading arm 21 to a disk mounting position where the turntable 132a of the disk mounting portion 132 and the center hole 2a face each other. At this time, the loading arm 21, pulling the large-diameter disk 2A is rotated in the arrow a ₁ direction by the loading cam plate 23 is guided by the cam portion 155a for the large-diameter disk to the centering position for holding the disk loading position. The slide guide rails 24 by slide position regulation edge 125 of the position restricting plate 93 while being slid biased in the arrow d ₂ direction by the coil spring 79 and centering springs 80 is restricted, disc diameter disc 2A It is held at a centering position that supports the mounting position. The eject arm 22 for supporting the outer peripheral surface of the large-diameter disk 2A by the second support roller 58 is rotationally biased in the arrow c ₂ direction by the coil spring 55, to stop the large-diameter disk 2A, each centering position The slide guide rail 24 and the loading arm 21 are pressed. As a result, the large-diameter disk 2A is supported at three points to be aligned with the disk mounting position. In the eject arm 22, at the centering position of the large-diameter disk 2A, the locking pin 53 is rotated up to the slide area of the first release piece 119a of the slide operation plate 92, and the slide guide rail 24 Opposing to the first pressing side 74. The locking pin 53 is pressed by the first release piece 119a of the slide operation plate 92 after the chucking operation of the large-diameter disk 2A, and presses the first pressing side 74, thereby ejecting the eject arm 22 and the slide guide. Release operation of the rail 24 is performed.

  At the timing when the centering of the large-diameter disk 2A is completed, the base unit 130 is moved up and down from the chucking release position through the chucking position to the recording / reproducing position in the same manner as when the small-diameter disk 2B is transported. And waits for a recording or reproduction operation by the user.

When the chucking of the large-diameter disk 2A is performed, the loading cam plate 23 is guided by the large diameter disk cam portion 155a of the main slider 152 and rotated in the arrow b ₁ direction, the arrow a ₂ direction the loading arm 21 Turn to. Thereby, as shown in FIG. 32, in the loading arm 21, the guide roller 33 is separated from the outer peripheral surface of the large-diameter disk 2A.

Further, the slider board 92, by further sliding the _{f 1} direction in conjunction with the sliding of the main slider 152, the first release strip 119a, to press the lock pin 53 of the eject arm 22, the eject arm 22 the pivoting the _{c 1} direction. Thereby, in the eject arm 22, the second support roller 58 is separated from the outer peripheral surface of the large-diameter disk 2A.

Also, the locking pin 53 is pressed by the first release strip 119a, to press the first pressing edge 74 of the slide guide rails 24, sliding the slide guide rails 24 in the arrow d ₁ direction. Thereby, as for the slide guide rail 24, the rail member 73 spaces apart from the outer peripheral surface of 2 A of large diameter discs. Thereafter, when the user performs a recording or reproducing operation on the large-diameter disk 2A, each part of the base unit 130 is driven, and information signals are recorded and reproduced on the large-diameter disk 2A.

Reproducing operation is completed and the discharge operation of the large-diameter disc 2A is made by the user, first, the driving motor 151 of the drive mechanism 150 is reversed, the main slider 152 is slid in the arrow h ₂ direction. Thus, as shown in FIG. 33, the loading cam plate 23 is rotated in the arrow b ₂ direction by the slider pins 45 are guided by the cam portion 155a for the large-diameter disk, the arrow a ₁ direction the loading arm 21 Turn to. Loading arms 21, by being rotated in the arrow a ₁ direction, the guide roller 33 to support the outer peripheral surface of the large-diameter disk 2A.

Further, by the main slider 152 is slid in the arrow h ₂ direction, in conjunction with the rotation of the arrow e ₂ direction of the slide arm 91, the slider board 92 is slid into the direction of arrow f _2. As a result, the first release piece 119a of the slide operation plate 92 is pressed against the locking pin 53 of the eject arm 22 and pressed against the first pressing side 74 of the slide guide rail 24 via the locking pin 53. Canceled. Eject arm 22, by pressing of the lock pin 53 is released, is rotated in the arrow c ₂ direction by the urging force of the coil spring 55, the large-diameter disk 2A in the second support roller 58 of the disk support portion 52 Supports the outer peripheral surface. The slide guide rails 24, by the pressing of the first pressing edge 74 is released, and slide in the arrow d ₂ direction by the urging force of the coil spring 79 and centering spring 80, the rail member 73 is large-diameter disk 2A Abuts with the outer peripheral surface.

The main slider 152 is further when slid in the arrow h ₂ direction to lower the traverse chassis 131 from the recording and reproducing position together with the sub-slider 153 via a chucking position to the chucking release position. When the traverse chassis 131 is lowered to the chucking release position, the periphery of the center hole 2a is pushed up by the chucking release pin 12 erected on the bottom case 4 of the large-diameter disk 2A, and is disengaged from the engagement protrusion 143a. .

Loading arm 21, the main slider 152 is slid in the arrow _{h 2} direction, the loading cam plate 23 is rotated in the arrow _{b 1} direction, it is rotated in the arrow _{a 2} direction. Further, the eject arm 22 is rotated in the arrow c ₂ direction by the urging force of the coil spring 55, it will eject the large-diameter disk 2A. Accordingly, the large-diameter disk 2A is discharged straight while sliding on the slide guide rail 24 while being sandwiched between the eject arm 22 and the loading arm 21.

In this case, similarly to the time of ejection of small-diameter disk 2B, the eject arm 22, because it supports the large-diameter disc 2A by the second support roller 58, a large diameter with the rotation in the arrow c ₂ direction Even when the disk 2A is pressed, the pushing angle of the optical disk 2 with respect to the discharging direction of the large diameter disk 2A can be suppressed, and smooth discharge can be performed without applying an excessive load to the large diameter disk 2A or the slide guide rail 24. .

Also at this time, as shown in FIG. 34, since the eject arm 22 does not have enough force to eject the large-diameter disk 2A only by the urging force of the coil spring 55, the rotation assist pin 59 is provided on the slide operation plate 92. urged by turning the auxiliary spring 120 that is, rotation in the arrow c ₂ direction is assisted. That is, when the slide operation plate 92 is slid in the direction of the arrow f ₂ in conjunction with the slide of the main slider 152 in the direction of the arrow h ₂ , the rotation assist spring 120 is the same as the rotation direction of the rotation assist pin 59. Slide in the direction. Here, the eject arm 22, because it does not include the force for partitioning discharge the large-diameter disk 2A, the amount of rotation of the rotating auxiliary pin 59 relative to the sliding amount of the f ₂ direction of the slider board 92 is short. Thus, turning the auxiliary spring 120 abuts a pivot auxiliary pins 59, by pressing, to assist the rotation in the arrow c ₂ direction of the eject arm 22.

Further, the eject arm 22, when it is rotated in the arrow c ₂ direction by the urging force of the coil spring 55 and the rotation assisting spring 120, the second support roller 58 of the first support roller 57 to the large-diameter disk 2A support Move. Therefore, as shown in FIG. 35, the eject arm 22 can solve the shortage of the amount of extrusion caused by pushing out the large-diameter disk 2A only by the second support roller 58, and can carry it to a predetermined disk insertion / removal position.

The eject arm 22, when further rotated in the arrow c ₂ direction, the lock pin 53 is engaged with the first Kakaritomehen 76 of the slide guide rail 24. At this time, the main slider 152 presses the home position detection switch 11e provided on the circuit board 10 to switch from off to on. Next, the main slider 152 presses the eject position detection switch 11d to switch from off to on.

  As a result, the disc transport mechanism 20 stops the large-diameter disc 2A at the disc insertion / removal position where the center hole 2a faces the outside through the disc insertion / removal port 15, and the eject position detection switch 11d is turned on. It can be seen that the large-diameter disk 2A has been ejected to the disk insertion / removal position.

Then, the eject position detecting switch 11d is switched on, the drive mechanism 150, the driving motor 151 is rotated forward, sliding the main slider 152 in the arrow _{h 1} direction. In the disk drive device 1, when the home position detection switch 11e is switched from on to off again, the drive motor 151 stops.

When the large-diameter disk 2A is removed from the disc slot 15, as shown in FIG. 36, the slide guide rail 24 is urged by the coil spring 79 is slid in the arrow d ₂ direction, the first slide roller 85 is chassis plate 90 abuts against the right end of the first slide guide groove 95 formed at 90 and returns to the initial position. The slide guide rails 24 by sliding in the arrow d ₂ direction, the pressing of the second large-diameter disk detection switch 11b is released, it switches from ON to OFF.

Moreover, by the large-diameter disk 2A is extracted, the eject arm 22 is urged by the coil spring 55, is rotated in the arrow c ₂ direction. At this time, the slide operation plate 92 is similarly returned to the initial position by returning the main slider 152 to the initial position, so that the rotation assist spring 120 is separated from the rotation assist pin 59 of the eject arm 22. In position. Therefore, the eject arm 22 is in a state where the urging force of the rotation assist spring 120 is not transmitted.

Moreover, by the large-diameter disk 2A is extracted, the loading cam plate 23 is rotated in the arrow b ₂ direction by the coil spring 47, returns to the initial position. Thus, the loading cam plate 23, lock pin 44 regulates the return slides guide slide the lock groove 78 of the rail 24 to engage the arrow d ₁ direction to the initial position. The loading arm 21, with the rotation in the arrow b ₂ direction of the loading cam plate 23 to return to the same the initial position. As a result, the disk drive device 1 returns to the insertion standby state of the optical disk 2.

1 disk drive device, 2 optical disk, 2A large diameter disk, 2B small diameter disk, 3 apparatus main body, 4 bottom case, 5 top cover, 6 front panel, 10 circuit board, 11 detection switch group, 12 chucking release pin, 15 disk Insertion / removal port, 19 Deck guide rail, 20 Disk transport mechanism, 21 Loading arm, 22 Eject arm, 23 Loading cam plate, 24 Slide guide rail, 25 Sub chassis unit, 33 Guide roller, 40 Arm engaging part, 41 Rail lock part , 44 Lock pin, 45 Slider pin, 47 Coil spring, 51 Support shaft, 52 Disc support part, 53 Locking pin, 55 Coil spring, 56 Pickup part, 57 First support roller, 58 Second support roller, 5 9 rotation assist pin, 60 switch operation cam portion, 70 guide portion, 71 guide plate, 73 rail member, 74 first pressing side, 75 second pressing side, 76 first locking side, 77 second Locking edge, 78 Lock groove, 79 Coil spring, 80 Centering spring, 85 First slide guide roller, 86 Second slide guide roller, 87 Guide pin, 88, 89 Guide shaft, 90 Chassis plate, 91 Slide arm, 92 Slide operation plate, 93 Position restricting plate, 95 to 97 Slide guide groove, 104 bearing portion, 105 support pin, 110 shaft hole portion, 111 engagement shaft portion, 112 engagement pin, 117 engagement hole, 118 operation cam hole, 119 Release piece, 120 Rotating auxiliary spring, 125 Regulating side, 126 Rail biasing spring, 130 Base unit 131 traverse chassis, 132 disk mounting portion, 133 disk rotation drive mechanism, 135 optical pickup, 143 chucking mechanism, 150 drive mechanism, 151 drive motor, 152 main slider, 153 sub slider, 155 loading cam, 156 rotation cam, 157 slide cam, 160 first cam slit, 165 second cam slit

Claims (17)

A disk having a large and small diameter is rotatably supported in the main body of the apparatus to be inserted and removed. When the disk is inserted, the disk is pressed by the disk and rotated in the insertion direction. When the disk is ejected, the disk rotates in the ejection direction. An eject arm for ejecting the disk out of the apparatus body;
A first locking portion for locking the eject arm at a rotation position for discharging the large-diameter disk to a predetermined discharge position, and the eject arm at a rotation position for discharging the small-diameter disk to a predetermined discharge position. A disk transport mechanism comprising a slide member having a second locking portion to be locked. The slide member is slidable in a direction substantially perpendicular to the insertion / ejection direction of the disc, and extends in the insertion / ejection direction of the disc, and is inserted / ejected by sliding the outer peripheral surface of the disc. A guide side for guiding is formed,
The disk transport mechanism according to claim 1, wherein the first and second locking portions have different slide positions according to the outer diameter of the disk.   3. A disk transport mechanism according to claim 2, further comprising: a lock mechanism that restricts the slide member from sliding when the small diameter disk is transported from an insertion guide position of the small diameter disk and releases the slide restriction of the slide member when the large diameter disk is transported. . A slide position restricting member that restricts the position of the slide member only at an insertion guide position corresponding to the small diameter disk and the large diameter disk;
A loading arm that pulls the disk into the apparatus body,
3. The disc transport mechanism according to claim 2, wherein the disc is centered by the slide member, the eject arm and the loading arm whose slide positions are regulated.   The disk transport mechanism according to claim 4, wherein the eject arm is formed with a plurality of support portions that contact the outer peripheral surface of the disk at different angles. An urging member that urges the eject arm to rotate in the disc ejection direction;
The disk transport mechanism according to claim 2, further comprising a rotation assisting member that assists the ejection arm in the ejecting direction of the disk.   The disk transport mechanism according to claim 6, wherein the rotation assisting member is separated from the eject arm when waiting for insertion of the disk.   7. The disk transport mechanism according to claim 6, wherein the eject arm is rotatable in the insertion direction of the disk when the disk is ejected and when the power to the apparatus main body is not turned on. The device body;
A disc transport mechanism for transporting discs of different sizes across the inside and outside of the apparatus body;
A recording and / or reproducing mechanism for recording or reproducing information signals with respect to the disc,
The disk transport mechanism is
It is supported in the apparatus main body so as to be rotatable. When the disk is inserted, the disk is pressed and rotated in the insertion direction. When the disk is ejected, the disk rotates in the ejection direction and ejects the disk out of the apparatus main body. An eject arm,
A first locking portion for locking the eject arm at a rotation position for discharging the large-diameter disk to a predetermined discharge position, and the eject arm at a rotation position for discharging the small-diameter disk to a predetermined discharge position. A disk drive comprising: a slide member having a second locking portion for locking. It has a device body connected to a disk drive,
The disk drive includes an apparatus main body, a disk transport mechanism for transporting disks having different large and small diameters inside and outside the apparatus main body, and a recording and / or reproducing mechanism for recording or reproducing information signals with respect to the disk. With
The disk transport mechanism is
It is supported in the apparatus main body so as to be rotatable. When the disk is inserted, the disk is pressed and rotated in the insertion direction. When the disk is ejected, the disk rotates in the ejection direction and ejects the disk out of the apparatus main body. An eject arm,
A first locking portion that locks the eject arm at a rotation position for discharging the large-diameter disk to a predetermined discharge position, and the eject arm at a rotation position for discharging the small-diameter disk to a predetermined discharge position. An electronic device comprising a slide member having a second locking portion to be locked. A disk is inserted into and removed from the main body of the apparatus so as to be rotatable. When the disk is inserted, the disk is pressed by the disk and rotated in the insertion direction. When the disk is ejected, the disk is rotated in the ejection direction. An eject arm to eject out of the main body,
A rotation member that rotates the eject arm in the ejection direction;
The eject arm is a disc transport mechanism in which a plurality of support portions that are in contact with the outer peripheral surface of the disc at different angles are formed.   12. The disc transport mechanism according to claim 11, wherein the plurality of support portions are sequentially brought into contact with the outer peripheral surface of the disc from one support portion to another support portion.   A guide side is formed that extends in the insertion / ejection direction of the disc and guides insertion / ejection by sliding the outer peripheral surface of the disc, and includes a slide member that is regulated at the insertion guide position of the disc. The disk transport mechanism according to claim 12.   14. The disc transport mechanism according to claim 13, wherein the eject arm ejects discs having different diameters.   15. The disk transport mechanism according to claim 14, wherein the guide side is formed up to the vicinity of an insertion / ejection opening provided in the apparatus main body for inserting and ejecting the disk. The device body;
A disc transport mechanism for transporting discs of different sizes across the inside and outside of the apparatus body;
A recording and / or reproducing mechanism for recording or reproducing information signals with respect to the disc,
The disk transport mechanism is
It is supported in the apparatus main body so as to be rotatable. When the disk is inserted, the disk is pressed and rotated in the insertion direction. When the disk is ejected, the disk rotates in the ejection direction and ejects the disk out of the apparatus main body. An eject arm,
A rotation member that rotates the eject arm in the ejection direction;
The disk drive in which the eject arm is formed with a plurality of support portions that contact the outer peripheral surface of the disk at different angles. It has a device body connected to a disk drive,
The disk drive includes an apparatus main body, a disk transport mechanism for transporting disks having different large and small diameters inside and outside the apparatus main body, and a recording and / or reproducing mechanism for recording or reproducing information signals with respect to the disk. With
The disk transport mechanism is
It is supported in the apparatus main body so as to be rotatable. When the disk is inserted, it is pressed by the disk and rotated in the inserting direction. An eject arm,
A rotation member that rotates the eject arm in the ejection direction;
An electronic apparatus in which the eject arm is formed with a plurality of support portions that contact the outer peripheral surface of the disk at different angles.

Images