JP2006302469A - Disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a "disk drive" which can automatically open/close a shutter provided to a cartridge and is suitable for the miniaturization of depth dimensions. <P>SOLUTION: The disk drive is provided with a tray guide 9 supporting a tray 10 in a movable manner, a first driving means for moving the tray guide 9 back and forth with respect to a main body device 3, a second driving means for relatively moving the tray 10 with respect to the tray guide 9 in accordance with the movement of the tray guide 9 and a shutter opening/closing member 18 for opening/closing a shutter plate provided to the cartridge 11, the shutter opening/closing member 18 is slidably supported to the tray guide 9, a specified hole 2a is formed in a side face of a top chassis 2 being a component of the main body device 3, and protrusions 18a and 18b formed on a side face of the shutter opening/closing member 18 are inserted movably into the specified hole 2a to thereby define a relative moving amount between the cartridge 11 mounted on the tray 10 and the shutter opening/closing member 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a disk device that transports a cartridge containing a disk-shaped recording medium in a case to a recording / reproducing position by a tray, and more particularly to a shutter opening / closing mechanism that closes an opening formed in the case of the cartridge.

  When the disc-shaped recording medium loaded in the disc device is an optical disc that performs high-density recording, such as a large-capacity DVD, a cartridge in which the optical disc is stored in a case in order to prevent the optical disc from being damaged by dust or the like Has come to be used. Normally, the cartridge case is provided with an opening and a shutter that can be opened and closed. When not in use, the opening is closed with a shutter to protect the internal optical disk from dust, etc. By opening the shutter and exposing the optical disk from the opening, information is recorded and / or reproduced on the internal optical disk through the opening.

  Conventionally, such a cartridge can be pulled into the recording / reproducing position by the tray, and the shutter of the cartridge is opened by relatively moving the shutter opening / closing mechanism disposed on the main body side during the pulling operation of the tray. A disk device is known in which an optical disk is exposed from an opening (for example, see Patent Document 1). A drive mechanism including a motor is mounted on the rear end portion of the tray, and the tray is reciprocated between a drawing position and a drawing position by the driving mechanism. A slider that moves forward and backward relative to the movement of the tray is disposed inside the main unit, and a shutter opening / closing mechanism attached to the slider is provided with an opening / closing base and a rack. The tray is also provided with a cam and abutment. The cam acts to separate the shutter opening / closing mechanism from the cartridge, and conversely, the abutting acts to bring the shutter opening / closing mechanism close to the cartridge. Yes.

In the disk device schematically configured as described above, when the cartridge is mounted on the tray at the pull-out position and the tray is pulled into the main body, the shutter opening / closing mechanism attached to the slider moves forward relative to the tray. Therefore, the rack of the shutter opening / closing mechanism slides outside the cartridge mounted on the tray. At that time, the abutment provided on the tray presses the opening / closing base of the shutter opening / closing mechanism from the back side, and the rack meshes with the inner shell housed in the cartridge to rotate it. Along with this, the shutter opens the opening. When the tray is further pulled into the main unit after the shutter is opened, the shutter opening / closing mechanism is separated from the cartridge by the cam provided on the tray, and the cartridge moves to the recording / reproducing position together with the tray in this state. Information is recorded and / or reproduced by an optical pickup on the optical disk exposed from the opening at the recording / reproducing position.
JP 2003-109282 A (page 7-9, FIG. 36)

  In the above-described conventional disk device, the shutter opening / closing mechanism disposed in the main body device moves relative to the tray, so that the cartridge shutter can be automatically opened during the pulling operation of the tray. The drive mechanism for moving the tray is mounted on the rear end portion of the tray, and the rear end portion of the tray including the drive mechanism is supported inside the main body device at the pull-out position. The tray protruding from the front surface can be stably supported.

  However, when a cartridge having a large outer dimension is transported by such a tray method, it is necessary to project the tray at least larger than the outer shape of the cartridge at the pull-out position. Become bigger. Therefore, in the above-described prior art, the tray opening / closing stroke is increased by the use of the cartridge, so that the tray is stably supported by increasing the depth of the tray. There is a problem that the depth size of the disk device increases because it must be housed inside the main unit at the retracted position.

  The present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to provide a disk device that can automatically open and close the shutter of the cartridge and is suitable for downsizing the depth dimension. .

  The present invention employs a double slide mechanism in which a tray is movably supported by a tray guide. A shutter opening / closing member is slidably supported by the tray guide, and a cartridge on the tray, a shutter opening / closing member, It was decided to provide a defining part that regulates the relative amount of movement.

  Since the disk device of the present invention employs a double slide mechanism in which the tray is movably supported by the tray guide, the overall depth of the device can be reduced while stably supporting the tray, The shutter opening / closing member is slidably supported on the tray guide, and the main unit is provided with a defining portion for defining the relative movement amount of the cartridge on the tray and the shutter opening / closing member. The shutter of the cartridge can be reliably opened and closed, and the structure of the shutter opening and closing mechanism can be simplified while reducing the depth dimension.

  The present invention has a tray on which a cartridge is placed so that the tray can be inserted into and removed from the main unit, the cartridge contains a case for storing a disk-shaped recording medium, and a shutter capable of opening and closing an opening formed in the case. In the disk device in which the shutter is closed at the tray drawing position and the shutter is opened at the tray drawing position, a tray guide for movably supporting the tray, and the tray guide A first driving means for moving the main body device in the front-rear direction; a second driving means for moving the tray relative to the tray guide as the tray guide moves; and the shutter; A shutter opening / closing member that opens and closes, and supports the shutter opening / closing member slidably on the tray guide, It provided defining portion for defining the amount of relative movement serial the cartridge that is mounted on the tray to the main unit and the shutter opening and closing member.

  The disk device configured as described above employs a double slide mechanism in which the tray is movably supported by the tray guide, so that the overall depth of the device can be reduced while stably supporting the tray. In addition, since the shutter opening / closing member is slidably supported on the tray guide, and the main unit is provided with a defining portion for defining the relative movement amount of the cartridge on the tray and the shutter opening / closing member, the shutter opening / closing member The shutter of the cartridge can be reliably opened and closed with a small amount of movement, and the structure of the shutter opening and closing mechanism can be simplified while reducing the depth dimension.

  In the above configuration, the shape of the defining portion is not limited as long as it defines the relative movement amount of the cartridge and the shutter opening / closing member, but the defining portion is formed on the side surface of the main body device. A notch extending in the front-rear direction, and a guide hole is formed on a side surface of the tray guide so as to overlap the notch, and a protrusion provided on the shutter opening / closing member passes through the guide hole and the notch It is preferable to reach inside.

  FIG. 1 is a plan view showing a tray drawing state of an in-vehicle disk device according to the embodiment, and FIG. 2 is a perspective view showing a cartridge mounting state of the in-vehicle disk device. 3 is a back view showing a tray pulling state of the double slide mechanism provided in the in-vehicle disk device, FIG. 4 is a back view showing a tray pulling state of the double slide mechanism, and FIG. 5 is a tray of the in-vehicle disk device. FIG. 6 is a perspective view showing a state in which the tray of the in-vehicle disk device is being pulled in, FIG. 7 is a perspective view showing a state in which the tray has been pulled in, and FIG. It is a disassembled perspective view of the cartridge used for an apparatus.

  The in-vehicle disk device according to the present embodiment includes a bottom chassis 1 and a top chassis 2 made of metal plates. The bottom chassis 1 and the top chassis 2 are integrated by screwing or the like to form a main body device 3. Yes. A pickup chassis 4 is disposed on the rear end side of the bottom chassis 1 (see FIG. 5), and a turntable 5, an optical pickup 6 and the like are mounted on the pickup chassis 4. A clamp arm 7 is supported on the rear end side of the top chassis 2, and a clamper 8 facing the turntable 5 is rotatably supported on the front end portion of the clamp arm 7 (see FIG. 1). .

  A tray guide 9 made of a metal plate is disposed inside the main body 3, and a pair of 9 b and 9 b projecting from the upper surface of the tray guide 9 are in the long holes 2 b and 2 b formed in the top chassis 2. The tray guide 9 is supported so as to be movable in the front-rear direction (arrow X1-X2 direction) of the main body device 3, for example. A tray 10 made of synthetic resin is supported by the tray guide 9 so as to be movable in the directions of arrows X1-X2. The tray guide 9 and the tray 10 are supported by the main body device 3 by a double slide mechanism described later. The tray 10 is formed with a notch 10a from the center to the rear end surface, and three mounting surfaces 10b, 10c, and 10d are formed so as to cross the notch 10a. These mounting surfaces 10b, 10c, and 10d have a stepped shape that gradually decreases from the outside toward the inside, and three types of disc-shaped recording media corresponding to the mounting surfaces 10b, 10c, and 10d are provided on the tray 10. It comes to be installed. That is, a small-diameter disk having a diameter of 8 cm is mounted on the innermost mounting surface 10b, a large-diameter disk having a diameter of 12 cmm is mounted on the outer mounting surface 10c, and the cartridge 11 is mounted on the outermost mounting surface 10d. It has come to be.

  The above-described double slide mechanism will be described. As shown in FIGS. 3 and 4, a loading motor 12 and a reduction gear train 13 are disposed on the front end side of the bottom chassis 1. The gear 12 a attached to the first gear 13 a meshes with the first gear 13 a of the reduction gear train 13, and the last gear 13 b of the reduction gear train 13 meshes with the first rack 14 fixed to the tray guide 9. As a result, the tray guide 9 moves in the front-rear direction of the main unit 3 using the loading motor 12 as a drive source, and the loading motor 12, the reduction gear train 13, and the first rack 14 constitute a first drive means. Further, a transmission gear train 15 is disposed on the tray guide 9, and a gear 15 a on the back side of the transmission gear train 15 meshes with a second rack 16 fixed to the inner surface of the bottom chassis 1, thereby transmitting the transmission gear. The front gear 15 b of the row 15 meshes with a third rack 17 fixed to the bottom surface of the tray 10. The transmission gear train 15 and the second and third racks 16 and 17 constitute second drive means. When the tray guide 9 is moved in the direction of the arrow X1-X2 by the first drive means described above, The moving force is transmitted to the tray 10 via the second driving means.

  That is, as shown in FIG. 3, when the tray 10 is in the pull-out position, the last gear 13 b of the reduction gear train 13 is engaged with the rear end side of the first rack 14, and the transmission gear train 15 The rear gear 15 a meshes with the front end side of the second rack 16, and the front gear 15 b of the transmission gear train 15 meshes with the rear end side of the third rack 17. In this state, when the loading motor 12 is driven to rotate in the clockwise direction in the figure, the rotation is decelerated by the reduction gear train 13 and is transmitted to the final gear 13b. Therefore, the first rack meshing with the gear 13b is used. 14 and the entire tray guide 9 begin to move in the direction of arrow X2. Along with this, the rear gear 15a of the transmission gear train 15 rotates while meshing with the second rack 16 fixed to the bottom chassis 1, and the rotation is transmitted to the front gear 15b of the transmission gear train 15. Therefore, the entire tray 10 moves in the direction of the arrow X2 together with the third rack 17 meshing with the gear 15b. Thus, the tray 10 moves relative to the tray guide 9 as the tray guide 9 moves, and finally the tray 10 moves to the retracted position as shown in FIG. During this time, since the rear gear 15a and the front gear 15b of the transmission gear train 15 rotate at a constant speed, the tray 10 moves in the same direction as the tray guide 9 moves in the X2 direction. Thus, the tray 10 moves twice as much as the tray guide 9. When the tray 10 is moved from the pulling position to the pulling position, the reverse operation is performed, and in this case, the tray 10 moves twice as much as the tray guide 9.

  As shown in FIG. 2, a defining hole 2a extending in the direction of the arrow X1-X2 is formed on one side surface of the top chassis 2, and the side surface of the tray guide 9 opposed to the defining hole 2a is similarly arrow X1-. A guide hole 9a extending in the X2 direction is formed. A shutter opening / closing member 18 made of synthetic resin is disposed inside one side surface of the tray guide 9, and a pair of protrusions 18 a and 18 b are formed on the outer surface of the shutter opening / closing member 18. These protrusions 18a and 18b pass through the guide hole 9a and reach the defining hole 2a, and both protrusions 18a and 18b can move in the guide hole 9a and the defining hole 2a. As shown in FIGS. 5 to 7, the shutter opening / closing member 18 is formed with engaging protrusions 18d and 18e at both ends sandwiching the central rack 18c, and the engaging protrusion 18d on the front end side is bifurcated. It is formed and is easily elastically deformed. As will be described later, when the cartridge 11 is placed on the tray 10 and conveyed to the recording / reproducing position, the shutter opening / closing member 18 automatically opens the shutter plate of the cartridge 11 as the tray 10 is retracted. ing.

  The structure of the cartridge 11 will be described. As shown in FIG. 8, the cartridge 11 includes an upper case C1 and a lower case C2 that are joined and integrated with each other. The diameters are formed inside the upper case C1 and the lower case C2. A 12 cm optical disk 20, a pair of shutter plates 21, a rotating ring 22, and a lock lever 23 are accommodated. The lower case C2 is formed with an opening 19a through which a part of the optical disc 20 can be exposed. The opening 19a is opened and closed by a pair of shutter plates 21. The shutter plate 21 is formed with a shaft hole 21a and a cam hole 21b, and each shaft hole 21a is inserted into a pin 19b provided on the inner bottom surface of the lower case C2. A pair of pins 22 a that engage with the cam holes 21 b of the shutter plate 21 are provided on the inner peripheral surface of the rotating ring 22, and the pins 22 a move in the cam holes 21 b as the rotating ring 22 rotates. Then, both shutter plates 21 rotate in a direction in which they are in contact with and away from each other about the shaft hole 21a. A tooth portion 22b is formed on the outer peripheral surface of the rotating ring 22 along the circumferential direction, and a lock groove 22c and an engagement groove 22d are formed at positions sandwiching the tooth portion 22b. The lock lever 23 is rotatably supported at a corner portion on the rear end side of the lower case C2, and an engaging protrusion 23a and a drive portion 23b are formed at both ends thereof. The lock lever 23 is urged to rotate in one direction by a spring (not shown), and the engaging projection 23a is locked to the lock groove 22c by this urging force, so that the rotating operation of the rotating ring 22 is locked. It is like that. A recess 19c communicating with the inside of the lower case C2 is formed on one side surface, and the engaging groove 22d of the rotating ring 22 and the drive portion 23b of the lock lever 23 project into the recess 19c.

  Next, the shutter opening / closing operation when the cartridge 11 is transported by the tray 10 in the vehicle-mounted disk device configured as described above will be described with reference mainly to FIGS. 5 to 7, a part of the tray guide 9 and the top chassis 2 are not shown, and the cartridge 11 is shown with the upper case C1 removed.

  First, when an eject button (not shown) is operated, the tray 10 protrudes to the front drawer position of the main body device 3 as shown in FIG. 1, so that the placement surface of the tray 10 in the drawer position as shown in FIG. The cartridge 11 can be placed on 10d. In this case, since the engaging protrusion 23a of the lock lever 23 is locked in the lock groove 22c inside the cartridge 11, the rotation operation of the rotary ring 22 is locked, and the opening 19a formed in the lower case C2 is locked. Are closed by both shutter plates 21. Further, when the tray 10 is in the drawer position in this way, the tray guide 9 has moved to the frontmost position with respect to the main body device 3 (see FIGS. 2 and 3), so that the rear side of the shutter opening / closing member 18 is When the protrusion 18b is pressed against the rear end face of the guide hole 9a, the front protrusion 18a comes into contact with the front end face of the defining hole 2a formed in the top chassis 2. Accordingly, since the protrusions 18a and 18b are sandwiched between the front end surface of the defining hole 2a and the rear end surface of the guide hole 9a at the position where the tray 10 is pulled out, the shutter opening / closing member 18 is attached to the top chassis 2 and the tray guide 9. It does not move against it. Further, when the tray 10 is in the drawer position, the rear end side of the tray 10 is supported by the tray guide 9 extending in the front-rear direction by a predetermined length, so that the tray 10 protrudes from the main body device 3 as a whole. However, the tray 10 is stably supported by the main body device 3 via the tray guide 9.

  In this state, when the loading motor 12 that is a drive source of the double slide mechanism is rotationally driven, the tray guide 9 is moved to the main body by the reduction gear train 13 of the first drive means and the first rack 14 as described above. 3, the tray 10 starts to move in the direction of the arrow X2 by the transmission gear train 15 of the second drive means and the second and third racks 16 and 17. During this time, the tray 10 moves in the direction of the arrow X2 at a distance twice as long as the tray guide 9 with respect to the main unit 3, and the difference in the amount of movement between the tray guide 9 and the tray 10 is the movement of the shutter opening / closing member 18 and the cartridge 11. Because of this difference, the engagement protrusion 18d on the front end side of the shutter opening / closing member 18 enters the recess 19c from the rear end corner of the cartridge 11, and the engagement protrusion 18d protrudes into the recess 19c. When it comes into contact with 23b, the shutter opening / closing member 18 supported by the tray guide 9 is pushed by the cartridge 11, so that both projections 18a, 18b of the shutter opening / closing member 18 move in the direction of the arrow X2 within the defined hole 2a.

  Then, as shown in FIG. 6, when the rear projection 18b comes into contact with the rear end surface of the defining hole 2a, the shutter opening / closing member 18 no longer moves in the arrow X2 direction. Only the cartridge 11 moves in the direction of the arrow X2, and the shutter opening / closing member 18 gradually enters the recess 19c of the cartridge 11 while the tray 10 is conveyed to the retracted position shown in FIG. As a result, the engagement protrusion 18d of the shutter opening / closing member 18 first presses the drive portion 23b of the lock lever 23, the engagement protrusion 23a is disengaged from the lock groove 22c, and the lock state of the rotating ring 22 is released, and then the engagement Since the protrusion 18d engages with the engaging groove 22d and rotates the rotating ring 22 in the direction of arrow A, the rack portion 18c of the shutter opening / closing member 18 meshes with the tooth portion 22b of the rotating ring 22. Further, when the shutter opening / closing member 18 enters the recess 19c, the rotation ring 22 rotates greatly in the direction of arrow A due to the engagement of the rack portion 18c and the tooth portion 22b, and accordingly, both shutter plates 21 rotate away from each other. In order to open the opening 19a, the optical disk 20 accommodated in the cartridge 11 is exposed from the opening 19a.

  When the tray 10 is thus transported to the retracted position by the double slide mechanism, the tray 10 is completely immersed inside the main unit 3 as shown in FIG. 7, and the cartridge placed on the tray 10 is placed. 11 is held at the recording / reproducing position. Although detailed description of the mechanism is omitted, the optical disk 20 in the cartridge 11 is lifted through the opening 19a and the cutout portion 10a of the tray 10 by moving the turntable 5 up by the pickup chassis 4 at the recording / reproducing position. Is adsorbed to the turntable 5. In this state, the optical disk 20 is rotationally driven by the turntable 5 and the optical pickup 6 is moved in the radial direction of the optical disk 20 to record and / or reproduce information on the optical disk 20.

  When the cartridge 11 that has been completely regenerated is discharged to the outside of the main unit 3, the loading motor 12 rotates in the reverse direction, and the tray 10 is pulled out in the reverse direction. Accordingly, the shutter opening / closing member 18 automatically closes both shutter plates 21 of the cartridge 11.

  When a small-diameter disk or a large-diameter disk other than the cartridge 11 is used, the small-diameter disk or the large-diameter disk is selectively placed on the placement surfaces 10b, 10c of the tray 10 drawn out to the front of the main body device 3. Thereafter, the tray 11 may be retracted by the double slide mechanism described above. In this case as well, the shutter opening / closing member 18 operates in the same manner as when the cartridge 11 is used with respect to the tray guide 9 and the tray 10. However, since the cartridge 11 is not placed on the tray 10, the shutter opening / closing member 18 is involved in the shutter opening / closing operation. do not do.

  As described above, the in-vehicle disk device according to the present embodiment employs the double slide mechanism in which the tray 10 is movably supported by the main body device 3 by the tray guide 9, so that the tray 10 is stably supported. However, the depth of the entire apparatus can be reduced. Further, the projections 18 a and 18 b of the shutter opening / closing member 18 are slidably inserted into the guide hole 9 a of the tray guide 9, and the projections 18 a and 18 b can be moved into the specified hole 2 a formed on the side surface of the top chassis 2. By arranging, the relative movement amount of the cartridge 11 on the top chassis 2 and the shutter opening / closing member 18 is regulated, so that the shutter plate 21 of the cartridge 11 can be securely moved with a small movement amount of the shutter opening / closing member 18. The shutter can be opened and closed, and the structure of the shutter opening and closing mechanism can be simplified while reducing the size of the depth.

  Further, when the shutter opening / closing member is fixed to the main body device 3, for example, the guide hole 9a of the tray guide 9 is extended in the front-rear direction in order to allow the shutter opening / closing member to enter the recess 19c of the cartridge 11. Although it is necessary to move the shutter opening / closing member in a relatively long section with respect to the tray guide 9 and there is a concern that the strength of the tray guide 9 may be reduced, the shutter opening / closing member 18 is moved back and forth on the tray guide 9 as in this embodiment. By providing the movable guide in the direction, the range of the guide hole 9a can be shortened, and the strength of the tray guide 9 can be prevented from being lowered.

  In the above embodiment, the case where the main body device 3 is constituted by the bottom chassis 1 and the top chassis 2 and the defining hole 2a is formed on one side surface of the top chassis 2 has been described. It is also possible to form the bottom chassis 1 or the top chassis 2 or a fixing member fixed to the bottom chassis 1 in place of the cartridge 2. In short, the members constituting the main body device 3 include the cartridge 11 and the shutter opening / closing member 18. It suffices if a defining part for defining the relative movement amount is provided.

It is a top view which shows the tray drawer | drawing-out state of the vehicle-mounted disk apparatus based on an Example. It is a perspective view which shows the cartridge mounting state of this vehicle-mounted disc apparatus. It is a back view which shows the tray pulling-out state of the double slide mechanism with which this vehicle-mounted disk apparatus is equipped. It is a back view which shows the tray drawing-in state of this double slide mechanism. It is a perspective view which shows the tray pulling-out state of this vehicle-mounted disc apparatus. It is a perspective view which shows the tray middle state of this vehicle-mounted disc apparatus. It is a perspective view which shows the tray drawing completion state of this vehicle-mounted disc apparatus. It is a disassembled perspective view of the cartridge used for this vehicle-mounted disk apparatus.

Explanation of symbols

1 bottom chassis 2 top chassis 2a regulation hole (regulation section)
DESCRIPTION OF SYMBOLS 3 Main body apparatus 9 Tray guide 9a Guide hole 10 Tray 10a Notch 10b, 10c, 10d Mounting surface 11 Cartridge 12 Loading motor 13 Reduction gear train 14 First rack 15 Transmission gear train 16 2nd rack 17 3rd rack Rack 18 Shutter opening / closing member 18a, 18b Protrusion 18c Rack portion 18d, 18e Engaging protrusion 20 Optical disc 21 Shutter plate 22 Rotating ring 23 Lock lever

Claims (2)

A tray on which a cartridge is placed can be inserted into and removed from the main unit, and the cartridge has a case for storing a disk-shaped recording medium, and a shutter capable of opening and closing an opening formed in the case, and the drawer of the tray In the disk device in which the shutter is closed at the position and the shutter is opened at the retracted position of the tray.
A tray guide for movably supporting the tray; a first driving means for moving the tray guide in the front-rear direction with respect to the main body device; and the tray with respect to the tray guide as the tray guide moves. And a shutter opening / closing member that opens and closes the shutter. The shutter opening / closing member is slidably supported by the tray guide and mounted on the tray on the main body device. A disc device comprising a defining portion for defining a relative amount of movement between the cartridge and the shutter opening / closing member. The description of claim 2, wherein the defining portion is a notch formed in a side surface of the main body device extending in the front-rear direction, and a guide hole overlapping the notch is formed in a side surface of the tray guide, A disk device, wherein a projection provided on a shutter opening / closing member passes through the guide hole and reaches the notch.

Images