JP3717677B2 - Information recording medium driving device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording medium driving device.
[0002]
[Prior art]
Conventionally, as this type of information recording medium driving device, for example, according to Japanese Patent Laid-Open No. 9-223348, a loading tray (drawer type) is driven in an ejecting direction when a disk as an information recording medium is loaded or ejected. Is disclosed. That is, this loading tray is equipped with a spindle motor that rotates the disk, an optical pickup, a feed mechanism that moves the optical pickup in the radial direction of the disk, and a drive unit that includes a flexible wiring board that connects them in a signal circuit manner. It is a drawer type. For this reason, since the loading tray protrudes from the drive device when the disk is attached / detached, the user directly attaches / detaches the disk onto the spindle motor turntable of the drive unit. The turntable is provided with a latch mechanism so that the disk can be freely attached and detached.
[0003]
The advantage of this method (drawer type) is that there is no need for a clamping mechanism for attaching / detaching the disk to / from the spindle motor turntable, compared to a mere tray system without a drive unit on the tray, In accordance with the sliding operation, the drive unit retracting mechanism for retracting the drive unit from the tray and the space for the moving stroke may be unnecessary. For this reason, such a drawer type is adopted for a drive device built in a notebook personal computer in which a thin drive device is particularly desired. On the other hand, since the slot size is fixed, a tray type is adopted for incorporation into a desktop or tower type personal computer that does not need to be thinned.
[0004]
[Problems to be solved by the invention]
By the way, CD (Compact Disc) and DVD (Digital Versatile Disc) are disk-like discs (bare discs), but recordable CD-R (Recodable), CD-RW (Rewritable), DVD-R, DVD-RW. A disk such as a DVD-RAM is stored in a rectangular caddy for use.
[0005]
For this reason, the drive device is required to be compatible with both a bare disk and a caddy.
[0006]
Here, the caddies currently on the market have a built-in clamper with an iron plate, and the magnetic attraction force is applied to the permanent magnet of the spindle motor turntable, so that the disk in the caddy is made into a spindle. It is intended to be sandwiched between a motor turntable and a clamper.
[0007]
However, in the drive device adopting the conventional drawer type disk loading / ejecting method as in the above-mentioned publication example, a latch mechanism is provided on the tip side of the spindle motor, and the user locks the bare disk to the latch mechanism. The configuration is to let For this reason, the spindle motor having such a latch mechanism cannot be fitted with a disk built in the caddy.
[0008]
In the case of the above-mentioned publication, an optical pickup is disposed in the loading tray near the turntable of the spindle motor. For this reason, there is a possibility that the user's hand or finger touches the objective lens on the top of the optical pickup during the disk loading / unloading operation. As a result, the light spot may be deteriorated due to contamination of the objective lens, fingerprint attachment, damage, or the like. In addition, there is a possibility that drive characteristics may be deteriorated due to deformation or breakage of a support member (plate spring, wire, etc.) of an actuator that drives the objective lens. Further, each optical component mounted on the optical pickup and a flexible substrate connecting them in a signal circuit may be deformed or damaged. Furthermore, there is a possibility that the feed characteristics of the optical pickup may deteriorate due to adhesion of dust or the like to a bearing provided in a feed mechanism that moves the optical pickup in the radial direction of the disk, and damage to the guide rail. Thus, if the optical pickup that actually performs the reproduction, recording, and erasing operations on the disk is configured so that the user can directly touch the disk, the reliability of the drive device is significantly reduced.
[0009]
  there,The present invention is thinAn object of the present invention is to provide an information recording medium driving device capable of achieving the above.
[0010]
In addition, in order to achieve the above object, the present invention can reliably prevent the user from touching the optical pickup regardless of whether the disk is loaded or ejected, and avoid the above-mentioned various inconveniences. To do.
[0012]
Further, the present invention achieves a thinner loading tray and spindle motor portion in order to achieve the above object.
[0014]
[Means for Solving the Problems]
  According to the first aspect of the present invention, there is provided an information recording medium driving apparatus for reproducing, recording, or erasing information from a disk-shaped information recording medium that is rotationally driven. A loading tray that is movably provided between an insertion position inserted therein and holds the information recording medium; and a chassis that is provided inside the apparatus housing and movably holds the loading tray. The loading trayMove with the loading trayA disk drive means that is movably movable in the medium attachment / detachment direction, and that rotates the information recording medium, and an optical pickup device that is provided in the chassis and that irradiates the recording surface of the information recording medium. A sledge drive mechanism provided in the chassis for driving the optical pickup device along the recording surface; and a sledge drive mechanism provided on the loading tray for driving the optical pickup device along the recording surface; When the loading tray is in the protruding position, the disk drive means is positioned at a retracted position away from the information recording medium, and when the loading tray is in the insertion position, the disk drive means is loaded with the information recording medium. To positionThe position of the disk drive means in the disk attachment / detachment direction is controlled in accordance with the setting of guide grooves provided on both inner wall surfaces of the chassis.A disk drive means position control mechanism.
[0015]
Therefore, regardless of the form of the medium, it can be attached to or detached from the disk drive means on the loading tray at the protruding position, whether it is a bare disk-shaped information recording medium or an information recording medium built in the caddy. The information can be reproduced, recorded or erased. At the same time, it is possible to provide a moving space in which the disk drive means moves to detach the information recording medium outside the apparatus housing, so that the apparatus can be thinned. Furthermore, since the optical pickup is provided in the chassis and is always inside the device casing, the user's hand and fingers are not touched even when a disc is loaded / ejected, and dust, dust, etc. It is possible to avoid problems such as adhesion of contamination.
[0016]
  According to a second aspect of the present invention, there is provided an information recording medium driving apparatus for reproducing, recording, or erasing information on a disk-shaped information recording medium that is driven to rotate, and a protruding position protruding from the apparatus casing and the apparatus casing A loading tray that is movably provided between an insertion position inserted therein and holds the information recording medium; and a chassis that is provided inside the apparatus housing and movably holds the loading tray. The loading trayMove with the loading trayThe disk drive means for rotating the information recording medium so as to be movable in the medium attaching / detaching direction, and the optical pickup device provided on the loading tray for irradiating the recording surface of the information recording medium with light A sledge drive mechanism provided on the loading tray for driving the optical pickup device along a recording surface;
  When the loading tray is at the protruding position, the disk drive means is positioned at a retracted position away from the information recording medium, and when the loading tray is at the insertion position, the disk driving means is mounted at the information recording medium. To be located inThe position of the disk drive means in the disk attachment / detachment direction is controlled in accordance with the setting of guide grooves provided on both inner wall surfaces of the chassis.A disk drive means position control mechanism.
[0017]
Therefore, although the optical pickup is provided on the loading tray, the configuration can be further simplified although the optical pickup may be touched by the hand.
[0018]
According to a third aspect of the invention, in addition to the information recording medium driving device according to the first or second aspect, a case in which an opening for exposing a part of the built-in information recording medium is formed and the opening is shielded. A shutter opener that opens and closes the shutter, and when the loading tray moves from the protruding position to the insertion position, the disk drive means is opened after the shutter is opened. When the loading tray moves from the insertion position to the projecting position, the disk drive means is separated from the information recording medium and outside the opening. A disk drive interlocked with the movement operation of the loading tray so as to shield the shutter after moving to the retracted position. And means shutter opener operation timing control mechanism.
[0019]
Therefore, when the loading tray moves from the protruding position to the insertion position, the shutter is moved by the shutter opener to open the caddy opening, and then the disc drive means approaches the information recording medium through the caddy opening. When the loading tray moves from the insertion position to the projecting position, the disc drive means moves away from the information recording medium and is positioned outside the caddy opening, and then the shutter opener closes the caddy opening. When loaded, the shutter can be opened and closed automatically in conjunction with the movement of the loading tray, and the invention according to claim 1 or 2 can be easily realized.
[0020]
According to a fourth aspect of the present invention, in the information recording medium driving device according to the first or second aspect, the loading tray directly mounts the caddy mounting surface on which the caddy in which the information recording medium is built and the information recording medium are mounted. The disk drive means position control mechanism is configured such that when the loading tray is in the protruding position, the tip of the disk drive means is on the retreat position side of the caddy mounting surface, Position it on the mounting position side of the bare media mounting surface.
[0021]
Therefore, the information recording medium and the disk drive means do not interfere with each other, and the invention according to claim 1 or 2 can be easily realized.
[0022]
According to a fifth aspect of the present invention, in the information recording medium driving device according to the first or second aspect, the disk driving means has a turntable on which the information recording medium is mounted at a tip portion thereof, and the information on the turntable. An inclined portion for guiding a recording medium; and a cylindrical portion provided between the inclined portion and the turntable and corresponding to a center hole of the information recording medium. The loading tray directly receives the information recording medium. A bare medium mounting surface to be mounted is provided, and when the loading tray is in the protruding position, the position of the turntable protrudes closer to the mounting position than the position of the naked medium mounting surface.
[0023]
Therefore, the amount of movement of the disk drive means when the information recording medium is attached / detached can be reduced, and the invention according to claim 1 or 2 can be realized while the apparatus is thinned.
[0024]
According to a sixth aspect of the present invention, in the information recording medium driving device according to the first or second aspect, the disk drive means position control mechanism is interlocked with the movement of the loading tray between the protruding position and the insertion position. The disk drive means is provided with a movable plate that is movable in the direction of attaching / detaching the information recording medium, and the movable plate is provided with a caddy positioning pin.
[0025]
  Therefore, when the caddy is mounted, the positional relationship among the caddy, the information recording medium, and the disk drive means can be easily determined, and the invention according to claim 1 or 2 can be easily realized.
  The invention described in claim 7The information recording medium is a bare medium or a form in which the information recording medium is built in a caddy, and includes a clamper provided in the chassis and disposed at a position for sandwiching the bare medium. When the bare disk is loaded, the bare medium is sandwiched between the disk drive means and the clamper at the insertion position, and when the caddy is loaded on the loading tray, the clamper moves at the insertion position. The information recording medium in the caddy is clamped by the disk drive means and the built-in clamper of the caddy by retracting according to the movement of the caddy.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing the configuration of the main part of the information recording medium driving device of the present embodiment. First, a chassis 1 formed in a rectangular box shape and built in an apparatus housing (not shown), and formed in a rectangular shape having a size substantially the same as the chassis 1 and formed on the rail portions 2 on both sides of the chassis 1. A loading tray 4 that is movable in the directions A and B in FIG. 1 is provided by a guide rail portion 3 that is slidably fitted. Thus, basically, the loading tray 4 is configured to be able to selectively take a protruding position (see FIG. 1) protruding outward from the apparatus casing and an insertion position inserted into the apparatus casing. Yes.
[0027]
Here, the loading tray 4 has a rectangular caddy mounting surface 7 for mounting a caddy 6 in which an information recording medium 5 (see FIG. 5 and the like) to be described later is built, and a 12 cm disc for the information recording medium 8. A bare medium mounting surface 9 and a bare medium mounting surface 10 for an information recording medium (not shown) of 8 cm disc are formed in a step on the same center. Further, in the loading tray 4, an opening portion 11 that is notched in the radial direction is formed across the mounting surfaces 9 and 10 at a position behind the center. A spindle motor 12 as a disk drive means for rotating the disk is provided at the center of the loading tray 4 so as to be movable in the disk thickness direction (C / D direction in FIG. 1 = medium mounting / removal direction). ing. A decorative plate 13 is provided in front of the loading tray 4 and is pushed in by the user.
[0028]
On the chassis 1 side, an optical pickup device 21 is provided at a position corresponding to the opening 11 in a state where the loading tray 4 is located at the insertion position. Although this optical pickup device 21 has a well-known structure and is not specifically described, the top is provided with an objective lens 22 that forms a minute spot on the disk facing the disk, and a deflection prism 23 (for deflection) (below it). The information reproduction, recording or erasing operation is performed. Such an optical pickup device 21 is movable in the radial direction of the disk by a lead screw 25 while being guided by a shaft 24. The lead screw 25 is rotationally driven via a DC motor 26 and a gear 27 and an intermediate gear 28 provided at the tip of the rotating shaft of the DC motor 26. Thus, by rotating the lead screw 25, the optical pickup device 21 is linearly moved in the disk radial direction, and a sledge drive mechanism 29 is configured.
[0029]
Here, the disk will be described. Regardless of the caddy built-in type or the bare disk type, as shown in FIG. 2, a center hole 31 for clamping is formed at the center of the information recording media 5 and 8. On the other hand, as shown in FIG. 3, the spindle motor 12 has a turntable 32 with a built-in permanent magnet on which the information recording media 5 and 8 are mounted. A cylindrical portion 33 having a diameter substantially coinciding with the central hole 31 is formed on the motor shaft with a height of about the medium thickness, and an inclined portion 34 tapered in a conical taper shape is formed on the tip side thereof. Yes. The most advanced part is a protrusion for fitting with a clamper 35 (see FIG. 6 etc.) provided on the chassis 1 side.
[0030]
The caddy 6 will be described with reference to FIGS. 4 and 5. The caddy 6 has a disk-shaped information recording medium 5 built in a thin and rectangular box-shaped case 41, and a clamper 42 is rotatably held on the central ceiling surface in the case 41. . An iron plate is embedded in the clamper 42, and the information recording medium 5 in the case 41 is sandwiched between the clamper 42 and the turntable 32 by being attracted by a permanent magnet built in the turntable 32. Has been. Further, an opening 43 for allowing the spindle motor 12 and the optical pickup device 21 to access the built-in information recording medium 5 is formed on the lower surface side of the case 41 so as to cross the radial direction from the vicinity of the center. A shutter 44 that shields the opening 43 is normally provided so as to be freely opened and closed. The opening 43 and the shutter 44 are located on the insertion side with respect to the chassis 1 as shown in FIG. 4, and the shutter 44 is movable in a lateral direction (upward and downward in FIG. 4) perpendicular to the insertion direction. Is biased by a spring or the like so as to be in a shielded state.
[0031]
On the other hand, on the chassis 1 side, a clamper 35 is rotatably held by a clamping plate 45. The clamping plate 45 is provided so as to be movable in the front-rear direction (left-right direction in FIG. 4) by rail mechanisms 46 on both sides in the chassis 1. Here, the clamping plate 45 does not interfere with the information recording media 9 and 10 and is disposed at a height position where the clamping plate 45 interferes with the case 41 of the caddy 6. When the caddy 6 is inserted, the rail mechanism is provided. 46, the clamper 35 and the clamping plate 45 are pushed into the back side. A shutter opener 47 is mounted on the clamping plate 45. The shutter opener 47 is a U-shaped one formed so as to protrude on the opening side of the chassis 1 while being rotatably supported on the clamp pin plate 45, and a roller 48 that engages with and disengages from the shutter 44 is provided at the tip thereof. It is provided. The shutter opener 47 is engaged with a spring 49 that urges the shutter opener 47 in the shutter shielding direction. As a result, when the caddy 6 is pushed into the chassis 1 together with the loading tray 4, the roller 48 portion is locked to the shutter 44 according to the movement, and the shutter opener 47 is counterclockwise against the spring 49. It rotates to move the shutter 44 in the opening direction.
[0032]
Next, the lifting mechanism of the spindle motor 12 will be described with reference to FIG. First, the spindle motor 12 is mounted on a moving plate 51 that is movable in the disk attaching / detaching direction (vertical direction in FIG. 5), and the spindle motor 12 is displaced between the retracted position and the mounting position together with the moving plate 51. It is configured as follows. One end of a link 53 is rotatably connected to both sides of the moving plate 51 via pins 52. These links 53 themselves are rotatably supported by pins 54 on both sides of the loading plate 4, and the other end side extends to the vicinity of the leading end of the loading plate 4, and a pin 55 is provided on the outer surface thereof. On the chassis 1 side, guide grooves 56 for restricting the movement of the pins 55 are formed on both sides of the inner wall surface from the entrance portion to the back side. Here, the guide groove 56 is a retraction position displacement portion formed horizontally so as to restrict the position of the pin 55 to a high position with respect to the position of the pin 54 so as to position the spindle motor 12 at a retraction position away from the disk. 56a, and a mounting position displacement portion 56b formed horizontally so as to restrict the position of the pin 55 to substantially the same height position with respect to the position of the pin 54 so that the spindle motor 12 is positioned at the mounting position for mounting the disk. The retraction position displacement portion 56a and the mounting position displacement portion 56b are formed by an inclined portion 56c that connects the retraction position displacement portion 56a and the mounting position displacement portion 56b. The height position of the retracting position displacement portion 56a is such that the tip of the spindle motor 12 is positioned lower than the caddy mounting surface 7 (retracting position) and higher than the bare medium mounting surfaces 9 and 10 (mounting position). Is set to let The length L1 of the retracting position displacement portion 56a is set to a length at which the opening / closing operation of the shutter 44 by the shutter opener 47 can be completed. The total length of the length L1 of the retracting position displacement portion 56a and the length L2 of the inclined portion 56c is set to a length at which the spindle motor 12 is positioned outside the chassis 1. The moving plate 51, the link 53, and the guide groove 56 constitute a disk drive means position control mechanism 57. Of these, the disk drive means / shutter is constituted by the retraction position displacement portion 56a formed at a predetermined length L1. An opener operation timing control mechanism 58 is configured.
[0033]
Further, a caddy positioning pin 60 that fits into a positioning hole (not shown) of the caddy 6 through a positioning hole 59 of the caddy mounting surface 7 in the loading tray 4 is provided at a predetermined position on the moving plate 51.
[0034]
In such a configuration, the general operation will be described. When a disk is mounted on the drive device, the loading tray 4 is positioned at a protruding position protruding forward from the chassis 1 as shown in FIG. At this time, the spindle motor 12 has moved to a retracted position away from the disk. When the user uses the information recording medium 5 built in the caddy 6 such as CD-R, CD-RW, DVD-RW, DVD-RAM, etc., the caddy 6 is mounted on the caddy mounting surface 7 and the diameter is 12 cm. When using a bare information recording medium 8 such as a CD-ROM or DVD-ROM which is not built in the disk, it is directly mounted on the bare medium mounting surface 9. When using a bare information recording medium such as a CD-ROM or DVD-ROM having a diameter of 8 cm and not built in the caddy, it is directly mounted on the bare medium mounting surface 10. After loading any medium or caddy, the loading tray 4 is pushed into the chassis 1 by pressing the decorative plate 13. The spindle motor 12 is moved in the mounting direction by the link 53, the moving plate 1 and the like according to the position of the loading tray 4 accompanying the pushing operation, and the disk is mounted on the turntable 32 of the spindle motor 12. At this time, an opening 11 is formed in the loading tray 4, and when inserted into the chassis 1, the optical pickup device 21 faces the disk through the opening 11 and can be reproduced, recorded or erased. It becomes a state. Therefore, information is reproduced, recorded or erased by irradiating the disc with a light spot through the objective lens 22. At this time, the optical pickup device 21 is moved to a desired radial position of the disk by the DC motor 26.
[0035]
Next, details will be described. First, with reference to FIG. 6, a procedure for mounting a bare type information recording medium not built in a caddy such as a CD-ROM to the drive device will be described. First, FIG. 6A shows a state in which a disk is not loaded, and the loading tray 4 is in a state of protruding outward from the chassis 1 (protruding position). At this time, the spindle motor 12 supported on the moving plate 51 is restricted to a position where only the inclined portion 34 and the protruding portion 35 protrude from the bare medium mounting surfaces 9 and 10. Therefore, as shown in FIG. 6B, when the information recording medium 8 of 12 cm is placed on the bare medium mounting surface 9, only the inclined portion 34 and the protruding portion 35 enter the center hole 31. The information recording medium 8 is not in contact with the turntable 32. This placement operation is easy without requiring strictness because the center hole 31 may be aligned with the tapered tapered portion 34.
[0036]
After the information recording medium 8 is placed in this way, when the user performs an operation of pushing the loading tray 4 into the chassis 1, the process shown in FIG. 6C is performed and the process shown in FIG. 6D is performed. Is held in the correct insertion position. Here, in FIG. 6 (c) showing the progress in the middle, the spindle motor 12 is outside the chassis 1, but before reaching this position, the spindle motor 12 moves to the moving plate 51, the link 53, and the inclined groove 56 c of the guide groove 56. The pin 55 is pushed up to the disk side based on the above action (the pin 55 is guided from the retracting position displacement portion 56a to the inclined portion 56c and moves to the mounting position displacement portion 56b). As a result, the cylindrical portion 33 and the turntable 32 are engaged with the information recording medium 8, and the turntable 32 moves to a position higher than the bare medium mounting surface 9, so that the information recording medium 8 is In the state of being held on 32, it is separated from the bare medium mounting surface 9. As described above, the raising / lowering operation of the spindle motor 12 for placing the information recording medium 8 on the turntable 32 is performed before the spindle motor 12 enters the chassis 1. Therefore, the space for moving the spindle motor 12 up and down necessary for the medium attaching / detaching operation exists in the external space of the chassis 1, and it is not necessary to secure this space in the chassis 1, so that the entire apparatus can be thinned. . Incidentally, in the prior art, in the example shown in FIG. 6D, a space for moving up and down the spindle motor must be secured between the circuit board 61 and the spindle motor 12 in the chassis 1, and the thickness cannot be reduced.
[0037]
Thereafter, as shown in FIG. 6D, when the loading tray 4 is completely inserted into the chassis 1, the turntable 32 is in a positional relationship facing the clamper 35 (positioned by the protrusion 36), and the clamper 35 When the permanent magnet on the turntable 32 side attracts the iron plate inside, the information recording medium 8 is sandwiched between the turntable 32 and the clamper 35 and can be rotated according to the rotation of the spindle motor 12. Thereafter, operations such as reproduction are performed according to the operation on the optical pickup device 21 side.
[0038]
The above procedure is the same for an 8 cm information recording medium.
[0039]
With reference to FIG. 7, a procedure for mounting the information recording medium 5 built in the caddy 6 such as a CD-RW to the drive device will be described. First, FIG. 7A shows a state in which a disk (caddy 6) is not mounted, and the loading tray 4 is in a state of protruding outward from the chassis 1 (protruding position). At this time, the spindle motor 12 supported on the moving plate 51 is restricted to a position where only the inclined portion 34 and the protruding portion 35 protrude from the bare medium mounting surfaces 9 and 10, and is positioned lower than the caddy mounting surface 7. . Therefore, the caddy 6 in which the information recording medium 5 is built can be placed on the caddy mounting surface 7 as shown in FIG. 7B without being obstructed by the spindle motor 12. However, since the spindle motor 12 is not retracted to such a low position that the inclined portion 34 and the protruding portion 35 are retracted from the bare medium mounting surfaces 9 and 10 as well, it can be suppressed to the minimum necessary retracted position. The amount of moving up and down (space) can be minimized.
[0040]
After the caddy 6 is placed in this way, when the user performs an operation of pushing the loading tray 4 into the chassis 1, the insertion shown in FIG. 7D is performed through the process shown in FIG. Held in position. Here, in FIG. 7 (c) showing the course in the middle, the spindle motor 12 is outside the chassis 1, but in the process of reaching this position, the pin 55 passes through the retraction position displacement portion 56 a of the guide groove 56. While moving, as shown in FIG. 4, the roller 48 of the shutter opener 47 is locked to the shutter 44, and the shutter 44 is moved in the opening direction in accordance with the pushing of the loading tray 4 to open the opening of the caddy 6. 43 is opened. When the loading tray 4 is further pushed in the state where the opening 43 is completely opened as described above, the pin 55 is guided from the retracting position displacement portion 56a of the guide groove 56 to the inclined portion 56c, and the mounting position displacement is detected. By moving to the portion 56b, the spindle motor 12 is pushed up to the disk side based on the action of the moving plate 51, the link 53, the guide groove 56, and the like. At this stage, since the opening 43 is completely open, there is no problem even if the spindle motor 12 is displaced upward. Thereby, the spindle motor 12 smoothly engages the cylindrical portion 33 and the turntable 32 with respect to the information recording medium 8 with the inclined portion 34 at the tip thereof as a guide, and the turntable 32 is more than the caddy mounting surface 7. The information recording medium 5 is moved to a higher position and is positioned so as to face the built-in clamper 42 (positioned by the protrusion 36), and the permanent magnet on the turntable 32 side attracts the iron plate in the clamper 42. It is sandwiched by the turntable 32 and the clamper 42 in a floating state in the case 41, so that it can move according to the rotation of the spindle motor 12. At this time, the caddy 6 is positioned by fitting the caddy positioning pin 60 into the positioning hole of the caddy 6. As described above, the lifting and lowering operation of the spindle motor 12 for placing the information recording medium 5 on the turntable 32 is performed before the spindle motor 12 enters the chassis 1. Therefore, the space for moving the spindle motor 12 up and down necessary for the medium attaching / detaching operation exists in the external space of the chassis 1, and it is not necessary to secure this space in the chassis 1, so that the entire apparatus can be thinned. .
[0041]
Thereafter, as shown in FIG. 7D, when the loading tray 4 is completely inserted into the chassis 1, the optical pickup device 21 can be opposed to the information recording medium 5 through the open opening 43. In accordance with the operation on the optical pickup device 21 side, operations such as reproduction are performed. At the time of the pushing operation of the loading tray 4 at this time, the clamping plate 45 is pushed by the caddy 6 and moved to the back side, and finally it is pushed into the innermost part as shown in FIG. . This is because the caddy 6 uses the built-in clamper 42 and therefore does not need the bare disk clamper 35.
[0042]
When the caddy 6 is taken out, the operation is reversed. Therefore, in the process of shifting from FIG. 7C to FIG. 7B, after the spindle motor 12 is retracted from the information recording medium 5 side, the shutter opener 47 operates in the shielding direction and the shutter 44 is shielded. To.
[0043]
In this embodiment, the optical pickup device 21 and the sledge drive mechanism 29 are provided on the chassis 1 side, but may be mounted on the loading tray 4 side as schematically shown in FIG. Even with such a configuration, the vertical movement space of the spindle motor 12 can be provided outside the chassis 1, the apparatus such as the chassis 1 can be thinned, and can be applied to both the caddy 6 and the bare disk. In this case, since the optical pickup device 21 is exposed to the outside together with the loading tray 4, the objective lens 22 can be touched, and there are problems such as contamination and breakage of the optical pickup device 21. The configuration is simpler when the optical pickup device 21 is mounted on the loading tray 4 than when it is built in the chassis 1.
[0044]
【The invention's effect】
In invention of Claim 1According to the diskIt is possible to provide a moving space in which the driving means moves to detach the information recording medium outside the apparatus housing, the apparatus can be thinned, and an optical pickup is provided in the chassis. Because it is inside the housing, even when a disc is loaded / ejected, the user's hand and fingers are not touched, and it is possible to avoid problems such as contamination of dust and dirt on the optical pickup. .In addition, the information recording medium of a bare disk or the information recording medium built in the caddy can be attached to and detached from the disk driving means on the loading tray at the protruding position, regardless of the form of the medium. The information can be reproduced, recorded or erased.
[0045]
According to the second aspect of the present invention, the optical pickup is provided on the loading tray, and there is a possibility that the hand may touch the optical pickup, but the configuration is further improved. Can be simple.
[0046]
According to the third aspect of the present invention, when the loading tray moves from the protruding position to the insertion position, the disk drive means opens the caddy opening after moving the shutter with the shutter opener to open the caddy opening. When the loading tray moves from the insertion position to the protruding position, the disk drive means is separated from the information recording medium and positioned outside the opening of the caddy, and then the shutter opener is attached to the caddy. Since the opening is closed, when the caddy is loaded, the shutter can be automatically opened and closed in conjunction with the movement of the loading tray, and the invention according to claim 1 or 2 can be easily realized.
[0047]
According to the invention described in claim 4, the information recording medium and the disk drive means do not interfere with each other, and the implementation of the invention described in claim 1 or 2 is facilitated.
[0048]
According to the fifth aspect of the present invention, the amount of movement of the disk drive means when the information recording medium is attached / detached can be reduced, and the invention of the first or second aspect can be realized while the apparatus is made thinner.
[0049]
  According to the invention described in claim 6, when the caddy is loaded, the positional relationship among the caddy, the information recording medium, and the disk drive means can be easily determined. Realization is easy.
According to the seventh aspect of the present invention, when the caddy is mounted on the loading tray, the clamper retracts in accordance with the movement of the caddy at the insertion position. Even a built-in information recording medium can be attached to and detached from the apparatus.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a tray protruding state showing an embodiment of the present invention.
FIG. 2 is a plan view showing an information recording medium.
FIG. 3 is a cross-sectional view showing the structure near the tip of a spindle motor.
FIG. 4 is a schematic bottom view showing a caddy, a clamping plate, a shutter opener, and the like.
FIGS. 5A and 5B are schematic cross-sectional views sequentially showing a motor lifting operation.
FIGS. 6A and 6B are schematic cross-sectional views sequentially illustrating operations when a bare disk is mounted. FIGS.
FIGS. 7A and 7B are schematic cross-sectional views sequentially showing operations in the case of caddy mounting. FIGS.
FIG. 8 is a schematic perspective view of a tray protruding state showing a modification.
[Explanation of symbols]
1 Chassis
4 Loading tray
5 Information recording media
6 Caddy
7 Caddy mounting surface
8 Information recording media
9,10 Bare medium mounting surface
12 Disc drive means
21 Optical pickup
29 Sledge drive mechanism
31 Center hole
32 Turntable
33 Cylindrical part
34 Inclined part
41 cases
43 opening
44 Shutter
47 Shutter opener
51 Moving plate
57 Disk drive means position control mechanism
58 Disk drive means / shutter opener operation timing control mechanism
60 Caddy locating pin

Claims (7)

In an information recording medium driving apparatus for reproducing, recording or erasing information on a disk-shaped information recording medium which is driven to rotate,
A loading tray provided movably between a protruding position protruding from the apparatus casing and an insertion position inserted into the apparatus casing, and holding the information recording medium;
A chassis that is provided inside the apparatus housing and holds the loading tray movably;
A disc driving means that moves together with the loading tray and is movably provided in a medium attaching / detaching direction with respect to the loading tray , and rotationally drives the information recording medium;
An optical pickup device provided in the chassis for irradiating light onto a recording surface of the information recording medium;
A sledge drive mechanism provided in the chassis for driving the optical pickup device along a recording surface;
A sledge drive mechanism provided on the loading tray for driving the optical pickup device along a recording surface;
When the loading tray is at the protruding position, the disk drive means is positioned at a retracted position away from the information recording medium, and when the loading tray is at the insertion position, the disk driving means is mounted at the information recording medium. And a disk drive means position control mechanism for controlling the position of the disk drive means in the disk attachment / detachment direction according to the setting of guide grooves provided on both inner wall surfaces of the chassis. Recording medium drive device. In an information recording medium driving apparatus for reproducing, recording or erasing information on a disk-shaped information recording medium which is driven to rotate,
A loading tray provided movably between a protruding position protruding from the apparatus casing and an insertion position inserted into the apparatus casing, and holding the information recording medium;
A chassis that is provided inside the apparatus housing and holds the loading tray movably;
A disc driving means that moves together with the loading tray and is movably provided in a medium attaching / detaching direction with respect to the loading tray , and rotationally drives the information recording medium;
An optical pickup device provided on the loading tray for irradiating the recording surface of the information recording medium with light;
A sledge drive mechanism provided on the loading tray for driving the optical pickup device along a recording surface;
When the loading tray is at the protruding position, the disk drive means is positioned at a retracted position away from the information recording medium, and when the loading tray is at the insertion position, the disk driving means is mounted at the information recording medium. And a disk drive means position control mechanism for controlling the position of the disk drive means in the disk attachment / detachment direction according to the setting of guide grooves provided on both inner wall surfaces of the chassis. Recording medium drive device. A shutter opener that opens and closes the shutter with respect to a caddy having a case in which an opening that exposes a part of the built-in information recording medium is formed and a shutter that shields the opening;
When the loading tray moves from the protruding position to the insertion position, after opening the shutter, the disk drive means is mounted close to the information recording medium in the caddy through the opening, and the loading tray When the disk is moved from the insertion position to the protruding position, the loading tray is moved so as to shield the shutter after moving the disk drive means away from the information recording medium to the retracted position outside the opening. 3. The information recording medium driving apparatus according to claim 1, further comprising: a disk driving unit and a shutter opener operation timing control mechanism that are linked to the operation.   The loading tray has a caddy mounting surface on which a caddy in which the information recording medium is built is mounted and a bare medium mounting surface on which the information recording medium is directly mounted. The disk drive means position control mechanism includes the loading tray. 3. The disk drive device according to claim 1, wherein the front end of the disk drive means is positioned at a retracted position side from the caddy mounting surface and at a mounting position side from the bare medium mounting surface when the disk is at the protruding position. Information recording medium driving device. The disk drive means is provided at a tip portion of the turntable on which the information recording medium is mounted, an inclined portion for guiding the information recording medium to the turntable, and between the inclined portion and the turntable. A cylindrical portion corresponding to the central hole of the information recording medium,
The loading tray includes a bare medium mounting surface on which the information recording medium is directly mounted;
3. The information recording medium driving device according to claim 1, wherein when the loading tray is at the protruding position, the position of the turntable protrudes from the position of the bare medium mounting surface toward the mounting position.   The disk drive means position control mechanism includes a moving plate that can move the disk drive means in an attachment / detachment direction of the information recording medium in conjunction with the movement of the loading tray between the protruding position and the insertion position. The information recording medium driving device according to claim 1, wherein the moving plate includes a caddy positioning pin.   The information recording medium is a form in which a naked medium or an information recording medium is built in a caddy,
  A clamper provided in the chassis and disposed at a position to sandwich the bare medium;
  When the bare disk is mounted on the loading tray, the bare medium is sandwiched between the disk drive means and the clamper at the insertion position,
  When the caddy is mounted on the loading tray, the clamper is retracted in accordance with the movement of the caddy at the insertion position, and the information recording medium in the caddy is stored by the disc driving means and the built-in clamper of the caddy. The information recording medium driving device according to claim 1, wherein the information recording medium driving device is clamped.

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