JP2008262634A - Disk recording/reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk recording/reproducing device which has such high convenience that has not been expected before, by making it possible to be thin and used in various states, as the disk recording/reproducing device for opening and closing a tray and a lid with a time difference by one motor. <P>SOLUTION: By performing rotary-driving of a rotary tray and opening/closing driving of a tray storage lid via a special mechanism, a space necessary for the driving is reduced. Through interactions among a main cam gear, a tray missing-tooth gear, and a tray storage lid missing-tooth gear which have special shapes, the rotary driving and the opening/closing driving performed in synchronism with a time difference by one motor are realized, thereby reducing the number of components and realizing space saving. Moreover, through the functions of an eccentric side sensor and a noneccentric side sensor, such deficiency that a nonstandard disk is placed is previously detected even in use of various states. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disk recording / reproducing apparatus.

  In a disk recording / playback device used to record data on a disk to store data or to read data recorded on a disk, a tray on which the disk is placed and a lid that protects the tray are automatically In the case of those that open and close, it is necessary to control the opening and closing timing of each with a time difference. Conventionally, the time difference has been realized by providing a motor and a mechanism for opening and closing the tray and the lid, respectively. However, when a plurality of motors and mechanisms are provided in the main body, the thickness of the main body inevitably increases, and the convenience of the disk recording / reproducing apparatus deteriorates.

As a means for solving the above-mentioned problem, there is a technique such as Patent Document 1 that uses a special mechanism to open and close the tray and the lid with a time difference by one motor. In the invention of Patent Document 1, the tray is slid while drawing a substantially circular arc by the rotational movement of one gear, and the lid is opened and closed by the movement of an arm that slides in a groove provided on the side surface of the gear. . However, the invention of Patent Document 1 requires a certain amount of space in the main body in order to slide the tray. Further, in order to open and close the lid, the arm needs to be able to slide sufficiently in a groove provided on the side surface of the gear, and the gear is necessarily large. That is, the invention of Patent Document 1 is not fully satisfactory, although the number of components required is reduced by opening and closing the tray and lid with a single motor to achieve a certain degree of thinning.
JP 2003-85861 A

  An object of the present invention is to provide a disc recording / reproducing apparatus that is more convenient than ever.

  That is, in a disk recording / reproducing apparatus that opens and closes the tray and lid with a time difference with one motor, the space required for the disk recording / reproducing apparatus body is reduced by devising a mechanism for opening and closing the tray and lid with a time difference, It is an object of the present invention to provide a disc recording / reproducing apparatus that has been made thinner and more convenient than ever before.

  It is another object of the present invention to provide a disc recording / reproducing apparatus that can be used in various states and has improved convenience.

  As means for solving the above problems, the present invention provides the following inventions.

  The first invention is a main body having a disk drive and a mechanism drive motor, and is rotated by the mechanism drive motor to be in a standby state which is a disk readable position and an open state which is a disk loading / unloading position. The mechanism drive motor opens and closes in a time-synchronized manner with the rotation drive of the rotation tray so that the rotation tray is freely open and is open when the rotation tray is in an open state and closed when the rotation tray is in a standby state. Provided is a disk recording / reproducing apparatus including a tray storage lid to be driven.

  According to a second aspect of the present invention, there is provided a disc recording / reproducing apparatus according to claim 1, further comprising a standby biasing spring for biasing the rotating tray in a direction in which the rotating tray is in the standby state in the open state.

  According to a third aspect of the present invention, there is provided a main cam gear having a two-stage missing gear all-three-stage structure driven by the drive motor, and a tray missing tooth that meshes with one missing gear of the main cam gear and transmits a rotational force to the rotating tray. And a tray storage lid toothless gear that meshes with other toothless gears of the main cam gear to transmit a rotational force to the tray storage lid, and the tooth missing length of the tooth missing gear is the time difference synchronous drive. The disc recording / reproducing apparatus according to claim 1, wherein the disc recording / reproducing apparatus has a length of

  According to the fourth aspect of the present invention, when the contact region between the teeth of the tray missing gear and / or the tray storage lid missing gear and the teeth of the main cam gear missing gear becomes the meshing timing, it can be easily meshed. The disc recording according to any one of claims 1 to 3, further comprising a meshing biasing spring for biasing the teeth of the tray missing gear and / or the tray storage lid missing gear in the main cam gear meshing direction. A playback device is provided.

  According to a fifth aspect of the present invention, there is an uneven distribution side sensor for detecting when a small disk outside the standard of the tray is unevenly distributed in the tray by the rotational drive of the rotating tray, A disc recording / reproducing apparatus according to any one of claims 1 to 4, further comprising a side sensor.

  The present invention reduces the space required for a disc recording / reproducing apparatus main body by a special mechanism for opening / closing the tray and the lid with a time difference in a disc recording / reproducing apparatus that opens and closes the tray and the lid with a time difference by one motor. Thus, it is possible to provide a disc recording / reproducing apparatus that is thinner than ever.

  Further, the functions of the unevenly-distributed side sensor and the non-uniformly-distributed side sensor make it possible to detect in advance a problem that a non-standard disc has been placed, no matter what state the disc recording / reproducing apparatus is used.

  As a result, the disc recording / reproducing apparatus of the present invention is more convenient than ever before, and can fully meet the various needs of consumers.

  The best mode for carrying out the invention will be described below with reference to the drawings. However, the invention of the present application is not limited to these embodiments, and can be implemented in various modes without departing from the gist thereof. The first embodiment mainly relates to claim 1. The second embodiment mainly relates to claims 2, 3, and 4. The third embodiment mainly relates to claim 5.

  << Embodiment 1 >>

  <Overview of embodiment>

  The disc recording / reproducing apparatus according to the first embodiment includes a main body including a disc drive and a mechanism drive motor, a standby state where the disc drive position is rotated by the mechanism drive motor, and an open state which is a disc loading / unloading position. The mechanism drive motor in synchronization with the rotational drive of the rotating tray so that the rotating tray is open when the rotating tray is in the open state and closed when the rotating tray is in the standby state. And a tray storage lid that is driven to open and close.

  The disc recording / reproducing apparatus of the first embodiment performs rotation driving of the rotating tray and opening / closing driving of the tray storage lid with a time difference by one mechanism driving motor, and the special mechanism realizes an unprecedented thickness reduction. It is.

  <Configuration of Embodiment 1>

  FIG. 1 shows a disc recording / reproducing apparatus when the rotating tray (0102) is in a standby state. In this state, the tray storage lid (0101) is in a closed state, and both the rotating tray (0102) and the tray storage lid (0101) are stored integrally with the main body (0103).

  FIG. 2 shows the disc recording / reproducing apparatus when the rotating tray (0202) is in an open state. In such a state, the tray storage lid (0201) is in an open state, and the surface on which the disk is placed is completely open so that the rotating tray can easily place or remove the disk.

  “Rotating trays” (0102, 0202) are trays on which a disk is placed when a disk recording / playback apparatus performs operations such as reading a disk. When the user mounts or removes the disc, the rotating tray has a surface on which the disc is placed so as to be easily placed or taken out as shown in FIG. 2 (0202). Then, in the standby state where the disc is readable, the rotating tray is integrated in the same direction as the main body as shown in FIG. 1, thereby realizing a thin main body (0102).

  As shown in FIG. 2, the place on the rotating tray (0202) where the disc is placed is hollowed out in a substantially circular shape in accordance with the size of the 12 cm disc, so that the 12 cm disc is just inserted. Thereby, the user can easily determine the place where the disk is placed, and even if the rotating tray is driven to rotate by the function of the disk recording / reproducing apparatus, the disk is not easily detached from the rotating tray.

  Further, as shown in FIG. 2, the rotating tray (0202) has a reading window (0210: broken-line hatched portion). The rotating tray is rotationally driven by a mechanism drive motor (0204) provided in the main body. In order to reduce the load on the mechanism driving motor, it is desirable that the rotating tray be as light as possible. Therefore, the rotating tray (0202) has no extra parts, and a disk drive or the like is provided in the main body. Therefore, when the rotating tray on which the disk is placed is in the standby state, data is read by the disk drive or the like provided in the main body via the reading window (0210).

  The “tray storage lid” (0101, 0201) is positioned outside the rotating tray in the disk recording / reproducing apparatus and serves to protect the rotating tray and the inside of the main body. Further, as shown in FIG. 1, the tray storage lid has a circular portion at a part thereof, and a clamper is provided on the main body side of the circular portion. That is, when the tray is placed in the closed state (FIG. 1) after the disc is placed, the tray storage lid has a function of pushing the disc by the clamper so that the disc can be read by the disc drive provided in the main body. Fulfill.

  As described above, the disc recording / reproducing apparatus of this embodiment can read the disc by the interaction between the “rotating tray” and the “tray storage lid”. That is, first, the rotating tray on which the disk is placed by rotation driving is positioned in the standby state, and then the tray storage lid is closed by time opening / closing driving and the disk is pushed in by the clamper. The disc drive can read through the reading window.

  The “main body” (0103, 0203) refers to a portion other than the rotating tray and tray storage lid of the disk recording / reproducing apparatus. The mechanism drive motor (0104, 0204), worm (0105, 0205), guide rail L (0109, 0209), trays (0106, 0206), reverse lever L (0107, 0207), standby biasing spring L (0108, 0208), and the like are stored.

  <Processing flow of Embodiment 1>

Hereinafter, the operations of the rotating tray and the tray storage lid in the disk recording / reproducing apparatus of this embodiment will be described with reference to the drawings.
<< Rotating tray >>

  “Rotational drive by a mechanism drive motor” refers to a drive that moves the rotating tray from the standby state to the open state or from the open state to the standby state while rotating the direction of the tray by approximately 90 degrees. The mechanism drive motor is operated by a mechanism including a plurality of gears for transmitting the rotational motion, a plurality of tray drive arms, a plurality of guide rails, a tray shaft, and the like.

  The rotation drive for moving the rotating tray from the open state (FIG. 5) to the standby state (FIG. 4) will be described with reference to FIGS. FIG. 5 shows a schematic view of the rotating tray (0502) in the open state, and FIG. 4 shows a schematic view of the rotating tray (0402) in the standby state. As shown in FIG. 5, the rotating tray (0502) includes a tray drive arm L (0517: hereinafter referred to as T drive arm L) and a tray drive arm R (0523: hereinafter referred to as T drive arm) provided on the opposite side. R), the side surface of the rotating tray is fixed at substantially the center point. The tray projections L (0518: the tray projection on the opposite side not shown) provided at two locations on the upper and left sides of the rotating tray are connected to the rails of the guide rail L (0509) as shown in FIG. Set to move freely. The tray protrusion L (0518) can only move in the vertical direction according to the rail of the guide rail L. Although not shown, the disk recording / reproducing apparatus of the present embodiment has a guide rail R and a protrusion R on the opposite side corresponding to the guide rail L and the protrusion L. These have the same functions. is doing. That is, the movement of the rotating tray (0502) is restricted by the functions of the tray protrusions L and R (0518) and the guide rails L and R (0509).

  That is, from the open state of FIG. 5, first, the T drive arm L (0517) starts to rotate counterclockwise in the drawing by the rotational movement of the mechanism drive motor (0504), and the T drive arm R also moves along with the movement. In the drawing, it starts to rotate counterclockwise. (The drive mechanism of the T drive arm L by the mechanism drive motor will be described later). With the movement, the two tray protrusions (0518) start to move upward along the rails of the guide rail (0509).

  As shown in FIG. 4, the two tray protrusions (0518) reach the highest point of the rail of the guide rail (0409), and the T drive arm L (0417) and the T drive arm R (not shown) are omitted in the drawing. When the vertical state is reached, the rotating tray (0402) is in the standby state.

  Next, the mechanism of movement of the T drive arm L (0517) that is driven by the rotational movement of the mechanism drive motor (0504), which is omitted above, will be described with reference to FIG.

  When the rotating tray is changed from the open state in FIG. 5 to the standby state in FIG. 4, the user gives an instruction to move the rotating tray to the standby state by a switch or the like provided outside the main body. The mechanism drive motor (0504) of the mechanism drive motor starts to operate as a result of the user's operation, and the worm (0505) starts to rotate along with the operation. The rotational movement of the worm (0505) is shown in the drawing through the relay gear (0511), the main cam gear (0512), and the tray missing gear (0520) to the tray drive gear (0521: hereinafter referred to as T drive gear). Rotate clockwise. With the clockwise rotation of the T drive gear (0521) in the drawing, the tray holder gear (0522: hereinafter referred to as T holder gear) starts to rotate counterclockwise in the drawing, and the T holder gear (0522) The fixed T drive arm L (0517) rotates and moves counterclockwise in the drawing.

Here, the rotational drive for moving the rotating tray from the standby state (FIG. 4) to the open state (FIG. 5) is such that the worm rotates in the opposite direction to that described above, and the tray protrusion (0418) or This is realized by driving the T drive arm L (0417) or the like in the opposite direction. Therefore, detailed description here is omitted.
<< Tray storage lid >>

  “Open / close drive by mechanism drive motor” refers to a drive that moves the tray storage lid from the open state to the closed state or from the closed state to the open state while rotating the direction of the tray storage lid by approximately 90 degrees. It is operated by a mechanism comprising a drive motor, a plurality of gears for transmitting the rotational motion of the mechanism drive motor, a lid shaft, and the like.

  The opening / closing drive for moving the tray storage lid from the closed state (FIG. 3) to the open state (FIG. 31) will be described with reference to FIGS.

  When changing the tray storage lid from the closed state (FIG. 3) to the open state (FIG. 31), the user gives an instruction to move the tray storage lid (0301) to the open state using a switch or the like provided outside the main body. It's out. The mechanism drive motor (0304) of the mechanism drive motor starts to operate in response to the user's operation, and the worm (0305) starts to rotate along with the operation. The rotational movement of the worm (0305) rotates the lid driving gear (0314) counterclockwise in the drawing via the relay gear (0311), the main cam gear (0312), and the lid missing gear (0313). As the lid driving gear (0314) rotates counterclockwise on the drawing, the lid holder gear (0315) rotates clockwise on the drawing around the lid shaft (0316), and the lid holder gear (0315). The tray storage lid (0301) fixed to) is rotated clockwise in the drawing to be in the open state (FIG. 31).

Here, in the opening / closing drive for moving the tray storage lid from the open state (FIG. 31) to the closed state (FIG. 3), the worm rotates in the reverse direction to the above case, and the lid holder gear is reversed by the same mechanism as described above. This is realized by driving in the direction. Therefore, detailed description here is omitted.
<< Synchronizing the time difference between the rotation drive of the rotating tray and the opening and closing drive of the tray storage lid >>

  As means for driving the rotation drive of the rotating tray and the opening / closing drive of the tray storage lid with a time difference, a main cam gear having a missing gear stage, a tray missing gear, and a tray storing lid missing tooth as in Embodiment 2 described later. Although it may be realized by the interaction of gears, the present embodiment is not particularly limited.

  For example, you may implement | achieve by utilizing the interaction of the gear which has the groove | channel for a protrusion to enter into a substantially circular side surface, and the gear which has the protrusion for entering the said groove | channel.

  <Effect of Embodiment 1>

  The disk recording / reproducing apparatus according to the present embodiment realizes a reduction in the number of components by reducing the number of parts by rotating the rotating tray and opening / closing the tray storage lid with a single motor, thereby enabling a thin body.

  Further, the rotational drive is realized by a characteristic mechanism realized by a tray protrusion, a guide rail, etc., and the disk recording / reproducing apparatus of this embodiment is necessary for performing the rotational drive by the mechanism. This makes it possible to reduce the space required to make the main body thinner.

  Furthermore, in order to make it easier to place the disc in the open state, the surface on which the disc is placed is in a completely open state. Realize and make the body thinner.

  << Embodiment 2 >>

  <Outline of Embodiment 2>

  The disc recording / reproducing apparatus of Embodiment 2 has a “main cam gear” (FIG. 6) having a three-stage structure driven by the drive motor, and the function of the “main cam gear” is used to rotate one drive motor. Only by this, it is possible to drive the rotation of the rotating tray and to open / close the tray storage lid.

  The main cam gear having the all three-stage structure has a two-stage missing gear total three-stage structure in which two stages are missing gears and one stage is all-tooth gear. The disc recording / reproducing apparatus according to the second embodiment has the function of the “main cam gear” and the “tray missing tooth gear” and the “tray storage lid missing gear” meshing with the “main cam gear”. It is possible to synchronize the operation timing of the opening / closing drive with a time difference.

  Further, a plurality of urging springs for facilitating meshing of the “main cam gear”, “tray missing tooth gear” and “tray storage lid missing gear” are provided to reduce the load on the drive motor, and It is possible to improve the certainty of time difference synchronization.

  <Configuration of Embodiment 2>

  Hereinafter, the “main cam gear” that plays an important role in this embodiment will be described.

  The mechanism of time difference synchronization between the rotational drive of the rotating tray and the opening / closing drive of the tray storage lid by the interaction of the “main cam gear”, “tray missing tooth gear”, and “tray storage lid missing gear” will be described.

Furthermore, various “biasing springs” that serve to improve the accuracy of the time difference synchronization will be described.
<< Main cam gear >>

  As shown in FIG. 6, the “main cam gear” has one full-gear gear stage (0612A) that is all toothed on the circumference, and part of the circumference is toothed and partly missing. It is a two-stage missing gear total three-stage structure consisting of three stages with two missing gear stages (0612B, 0612C).

  FIG. 8 shows the meshing state of the main cam gear and the gear meshing therewith.

  The “all gear stage of the main cam gear” (0812A) meshes with the “relay gear” (0811). The relay gear (0811) has an all-stage all-teeth all-two-stage structure shown in FIG. That is, one full gear stage of the relay gear (0811) meshes with the worm (0805) of the drive motor, and the other full gear stage meshes with the full gear stage (0812A) of the main cam gear. Yes.

  The rotational motion of the drive motor is transmitted to the main cam gear via the worm (0805) and the relay gear (0811). Then, the rotational movement of the main cam gear is transmitted to the tray storing lid missing gear (0813) meshing with the missing gear stage (0812B) of the main cam gear, and the lid driving gear (0814) rotates to rotate the tray storing lid. Open / close drive. Further, the rotational movement of the main cam gear is transmitted to the rotating tray missing gear (0820) meshing with the missing gear stage (0812C) of the main cam gear, and the tray driving gear (0821) rotates to rotate the rotating tray. Will be.

Hereinafter, the meshing state of the missing gear stage (0812B) of the main cam gear and the tray storing lid missing gear (0813), and the missing tooth stage (0812C) of the main cam gear and the rotating tray missing gear (0820) will be described. To do.
<<< Main cam gear and tray storage lid missing gear >>>

  The “lid missing gear stage of the main cam gear” (0812B: hereinafter referred to as “M lid missing tooth gear stage”) is a missing gear stage located next to the entire gear stage (0812A). ”(0813: hereinafter referred to as lid missing gear). As shown in FIG. 9, the lid missing gear (0813) has a single-stage missing gear all-two-stage structure, and all the gears of the lid missing gear (0813) mesh with the lid driving gear (0814). . The missing gear stage of the lid missing gear (0813) meshes with the M missing tooth gear stage (0812B) of the main cam gear.

  FIG. 11 is a schematic cross-sectional view showing a meshing state between the M-covered tooth gear stage of the main cam gear (1112) and the missing gear stage of the cover-missed gear gear (1113). At this time, the contact (1140: hereinafter referred to as a contact area) between the main cam gear (1112) and the cover missing tooth gear (1113) is in contact at the missing tooth portion. In addition, the length (1112D) of the toothed portion of the M lid missing tooth gear stage is equal to the length (1113B) of the toothed portion of the lid missing tooth missing gear stage. Further, the contact region (1140) between the missing teeth of the main cam gear (1112) and the cover missing gear (1113) may have a slight gap. Thereby, friction can be reduced and the smooth operation of the main cam gear (1112) can be realized.

  Next, FIG. 12 shows a state when the main cam gear (1112) is rotated clockwise in the drawing from the state of FIG. 11 by the mechanism drive motor. At this time, in the contact region (1240) of the main cam gear (1212), the state of the missing tooth portion continues. Therefore, the rotational movement of the mechanism drive motor is not transmitted to the cover missing gear (1213).

  Here, as shown in FIG. 12, the toothed portion of the main cam gear (1212) is formed so as to be dug out from the surface in contact with the lid missing gear (1213) in the contact region (1240). On the other hand, the toothed portion of the cover missing gear (1213) is formed so as to protrude from the surface in contact with the main cam gear (1212) in the contact region (1240). In other words, when the main cam gear (1212) and the lid missing gear (1213) mesh with each other, the toothed portion of the main cam gear (1212) becomes a concave portion, and the toothed portion of the lid missing gear (1213) becomes a convex portion. And become engaged.

  Therefore, in the state of FIG. 12 in which the contact region (1240) of the main cam gear (1212) has no recess, the lid missing gear (1213) is rotated counterclockwise on the drawing by the lid missing gear stopper (1213A). The rotation is restricted, and the clockwise rotation on the drawing is restricted by the toothed portion (1213C). That is, in such a state, the lid missing gear does not rotate.

  Next, FIG. 13 shows a state when the main cam gear (1112) is rotated counterclockwise in the drawing from the state of FIG. 11 by the mechanism drive motor. At this time, the contact region (1340) of the main cam gear (1312) becomes a toothed portion, and meshes with the toothed portion of the cover missing gear (1313), so that the cover missing gear (1313) rotates clockwise in the drawing. Rotate to. Then, the rotation of the lid missing gear is transmitted to the lid driving gear and the lid holder gear by the same mechanism as in the first embodiment, and the tray storage lid is driven to open and close.

  Next, FIG. 14 shows a state where the main cam gear (1312) is further rotated counterclockwise in the drawing from the state of FIG. 13 by the mechanism drive motor. At this time, the contact region (1440) of the main cam gear (1412) and the lid missing gear (1413) becomes a missing tooth portion, and the rotational movement of the mechanism drive motor is not transmitted to the lid missing gear (1413). Further, the lid missing gear (1413) is restricted from rotating clockwise in the drawing by the lid missing gear stopper (1413A), and is restricted from rotating counterclockwise in the drawing by the toothed portion (1413C). Is done. That is, in such a state, the lid missing gear does not rotate.

  <<< Main cam gear and tray toothless gear >>>

  "Tray missing gear stage of the main cam gear" (0812C: hereinafter referred to as MT missing gear stage) is a missing gear stage located next to the lid missing tooth stage (0812B), and is a one-stage missing stage shown in FIG. It meshes with the “tray missing gear” with a two-stage tooth gear structure. The entire gear stage of the tray missing gear (0820) meshes with the tray drive gear (0821), and the missing tooth stage of the tray missing gear (0820) is the MT missing tooth stage (0812C) of the main cam gear. Mesh with.

The meshing of the MT missing gear step (0812C) and the missing gear step of the tray missing gear (0820) is performed by the M lid missing gear step (0812B) and the lid described with reference to FIGS. It functions by the same mechanism as the meshing of the missing gear (0813) with the missing gear. Therefore, detailed description here is omitted.
<< Synchronizing the time difference between the rotation drive of the rotating tray and the opening and closing drive of the tray storage lid >>

  As shown in the first embodiment, the rotation drive of the rotating tray is realized by transmitting the rotation of the main cam gear in the order of the tray missing gear, the T drive gear, the T holder gear, and the T drive arm L.

  Further, as shown in the first embodiment, the opening / closing drive of the tray storage lid is realized by transmitting the rotation of the main cam gear in the order of the lid missing gear, the lid driving gear, and the lid holder gear.

  In other words, by synchronizing the rotation of the lid toothless gear and the tray toothless gear with a time difference, it is possible to realize time difference synchronization between the rotation drive of the rotating tray and the opening / closing drive of the tray storage lid.

  Here, FIG. 15 is a schematic cross-sectional view showing the meshing state of the main cam gear (1512), the lid missing gear (1513), and the tray missing gear (1520). The tray missing gear (1520) is positioned so as to mesh with the MT missing gear stage (1512C: rear side of the drawing) of the main cam gear (1512), and the lid missing gear (1513) is the main cam gear (1512). Is located so as to mesh with the M lid missing gear stage (1512B: front side of the drawing). FIG. 32 shows a side view of the main cam gear (3212), the tray missing gear (3220), and the lid missing gear (3213) in mesh.

  FIG. 16 shows a state when the main cam gear (1512) is rotated counterclockwise in the drawing from the state of FIG. 15 by the mechanism drive motor. At this time, the abutment region (1640) of the M lid missing gear stage of the main cam gear (1612) and the lid missing gear (1613) becomes a toothed portion, and the lid missing gear (1613) is clockwise in the drawing. Rotate to. In the meantime, the contact region (1641) of the MT missing gear stage of the main cam gear (1612) and the tray missing gear (1620) is the missing tooth portion, and the rotational movement of the mechanism drive motor is caused by the tray missing gear (1620). However, the tray toothless gear (1620) does not rotate.

  Next, FIG. 17 shows a state when the main cam gear (1612) is further rotated counterclockwise on the drawing from the state of FIG. 16 by the mechanism drive motor. At this time, the MT partial gear stage of the main cam gear (1712) and the contact area (1741) of the tray partial gear (1720) become toothed portions, and the tray partial gear (1720) rotates clockwise in the drawing. To do. In the meantime, the contact region (1740) of the M lid missing gear stage of the main cam gear (1712) and the lid missing gear (1713) becomes the missing teeth portion, and the rotational movement of the mechanism drive motor is the lid missing gear (1713). In spite of this, the cover tooth gear (1713) does not rotate.

  Then, when the main cam gear (1712) is further rotated counterclockwise in the drawing from the state of FIG. 17, the M cover missing gear stage of the main cam gear (1812) and the lid are covered as shown in FIG. Both the contact area (1840) of the missing gear (1813), the MT missing gear stage of the main cam gear (1812), and the contact area (1841) of the tray missing gear (1820) are both missing teeth parts, Neither the lid missing gear (1813) nor the tray missing gear (1820) rotates.

  As described above, by utilizing the missing tooth lengths of the main cam gear, the tray missing gear, and the lid missing gear, the rotational movement transmitted from the mechanism drive motor to the main cam gear is changed to the tray missing gear and the lid missing gear. Can be communicated with a time difference. And the time difference synchronization of the rotation drive of a rotation tray and the opening / closing drive of a tray storage cover is implement | achieved.

  In the state shown in FIG. 18, when the main cam gear (1812) is rotated clockwise in the drawing by the mechanism drive motor, the tray missing gear (1820) is first rotated counterclockwise in the drawing by the same mechanism as described above. After that, the lid missing gear (1813) rotates counterclockwise in the drawing with a time difference and returns to the state of FIG.

  << Biasing spring >>

  <<< Biasing spring for standby >>>

  The “standby biasing spring” serves to apply a force to the rotating tray to move the rotating tray in the open state to the standby state. Thereby, the energy required for the initial operation in which the rotating tray starts to move from the open state to the standby state can be reduced. In addition, the tray toothless gear and the main part are provided with an urging force to rotate to the tray missing tooth gear via the T driving arm, T holder gear, and T driving gear, and the contact region is a missing tooth part. When the contact region of the cam gear comes to the meshing timing, the toothed portions can be easily meshed with each other.

  FIG. 19 shows a standby biasing spring L (1908) when the rotating tray is in a standby state, and FIG. 20 shows a standby biasing spring L (2008) when the rotating tray is in an open state.

  As shown in FIG. 20, the upper hook of the standby biasing spring L (2008) is fixed to a hook (2027) fixed to the main body. On the other hand, the lower hook of the standby biasing spring L (2008) is fixed to the hook (2024) of the return lever L (2007).

  Here, the return lever L (1907, 2007) has a vertically long shape as shown in FIG. 20, and has two vertically long rails (2026) on the vertically long surface. The return lever L (2007) is set in the main body by screws or the like (2025) existing in the rail (2026), but is not completely fixed, and the length of the rail (2026) In this range, vertical movement is possible.

  The return lever L (2007) has a tray (2006) at the bottom. The tray (2006) receives the tray protrusion L (2018) of the rotating tray (2002) as shown in FIG. That is, when the tray protrusion L (2018) moves downward, the tray (2006) comes into contact with the tray protrusion L (2018) and is pushed by the tray protrusion L (2018) as it is to move downward.

  Next, the movement of the standby biasing spring L (1908, 2008) when the rotating tray (1902, 2002) moves from the standby state of FIG. 19 to the open state of FIG.

  When the rotating tray (1902) starts to move to the open state by the mechanism drive motor from the standby state of FIG. 19, the tray protrusion L (1918) provided above the rotating tray follows the rail of the guide rail L (1909). Coming down. After the tray protrusion L (1918) comes into contact with the tray (1906) of the return lever L, the tray protrusion L (1918) counters the restoring force of the standby biasing spring L (1908) while receiving the tray (1906). Then, it goes further downward and enters the open state of FIG.

  That is, in the open state of FIG. 20, the standby biasing spring L (2008), which is fixed at the lower side by the hook (2024) of the backward movement lever L, is caused by the backward movement of the backward movement lever L as described above. In a stretched state. Therefore, at this time, a restoring force is acting on the standby biasing spring L (2008). The direction of the restoring force is a force that tries to raise the return lever L (2007) upward, that is, the direction that raises the tray protrusion L (2018) upward to move the rotating tray to the standby state. Suitable for.

  As shown in the schematic diagram of FIG. 21, the force to move the rotating tray to the standby state passes from the T drive arm (2117) via the T holder gear (2122) and the T drive gear (2121). It is transmitted to the tray partial gear (2120) as an urging force for rotating in the direction of the broken line arrow in the drawing.

  That is, as shown in the schematic diagram of FIG. 22, the contact region (2241) of the main cam gear (2212) and the tray missing gear (2220) is indicated by a solid line arrow on the drawing of the main cam gear (2212) from the missing teeth. When the meshing timing comes due to the rotation of the direction, the tray missing gear (2220) easily meshes with the main cam gear (2212) by the biasing force acting in the direction of the broken line arrow in the drawing.

Although this disk recording / reproducing apparatus is not shown in FIG. 19, it has a tray protrusion R at a position corresponding to the tray protrusion L (1918, 2018) on the right side above the rotating tray in the drawing. Similarly, it has a return lever R and a standby biasing spring R, and performs the same function by the same mechanism as described above.
<<< Tray meshing spring >>>

  The “tray meshing biasing spring” serves to give the rotating tray a force in a direction to move the rotating tray in the standby state to the open state. As a result, a biasing force for rotation is applied to the tray missing gear via the T drive arm, T holder gear, and T drive gear, and the contact between the tray missing tooth gear and the main cam gear that are formed between the missing tooth portions. When the contact area reaches the meshing timing, the toothed portion can be easily meshed.

  FIG. 23 is a view of the disc recording / reproducing apparatus viewed from the back side when the rotating tray (2302) is in the standby state. The upper hook of the tray engagement biasing spring (2328) is fixed to the hook (2329) fixedly set on the back side of the rotating tray, and the lower hook of the tray engagement biasing spring (2328) is fixed to the T drive arm (2331). It is fixed to a fixed tray return lever (2330).

  FIG. 24 is a side view of the rotating tray (2402), the tray engagement biasing spring (2428), the T drive arm (2431B), and the tray return lever (2430B) in the standby state. The T drive arm (2431B) and the tray return lever (2430B) drawn with solid lines are those when the rotating tray is completely in the standby state, and the T drive arm (2431A) and the tray return lever drawn with broken lines are drawn. (2430A) is just before the rotating tray is completely in the standby state.

  As shown in FIG. 24, before the rotating tray (2402) is completely in the standby state, that is, when the tray return lever (2430A) is drawn in a broken line, the tray meshing spring (2428) is moved. No pulling force is applied, but when the rotating tray (2402) is completely in the standby state, that is, when the tray return lever (2430B) is drawn in a solid line, the tray return lever (2430B) The tray engagement biasing spring (2428) will be pulled downward.

Therefore, when the rotating tray (2402) is completely in the standby state, a restoring force is applied to the tray meshing biasing spring (2428), and the direction of the restoring force is indicated by a tray return lever ( 2430A, 2430B) and the T drive arms (2431B, 2431A) are directed in a direction to move from a solid line state to a broken line state. The restoring force is transmitted as an urging force for rotating from the T drive arm to the tray missing gear via the T holder gear and the T drive gear by the same mechanism as that of the “standby biasing spring”. The abutment region between the main cam gear and the tray toothless gear functions so as to be easily engaged when the engagement timing comes.
<<< Tray storage lid engagement bias spring >>>

  The “tray storage lid engagement urging spring” serves to apply a force to the tray storage lid in a direction to move the tray storage lid in the open state to the closed state. Thereby, via the lid holder gear and the lid drive gear, a biasing force for rotation is applied to the lid missing gear, and the contact area between the missing gear portion and the main cam gear, When the mesh timing is reached, the toothed portions can be easily meshed with each other.

  FIG. 25 shows the tray storage lid engagement urging spring (2532) and the plurality of gears when the tray storage lid is in the open state. FIG. 26 shows the tray storage lid engagement biasing spring (2632) and a plurality of gears immediately before the tray storage lid is completely opened.

  As shown in FIG. 26, the “tray storage lid engagement biasing spring” is wound around the lid shaft (2616) and incorporated in a space (2637) provided in the lid holder gear (2615). Here, as shown in the schematic diagram of FIG. 27, the lid holder gear (2615) includes a lid shaft hole (2738), a pressure projection (2735), and a stopper projection hole (2739: hatched portion in the figure). Have That is, in FIG. 26, the stopper protrusion (2636) positioned above the pressurizing protrusion (2635) is not included in the lid holder gear (2615), but from the back side through the stopper protrusion hole (2739). It's something that sticks out. Here, the stopper projection (2636) is fixed and does not move at all due to the degree of freedom of the stopper projection hole (2739) even if the lid holder (2615) rotates.

  That is, the lid holder gear rotates counterclockwise from the state (2615) immediately before the tray storage lid in the fully open state in FIG. 26, and the tray storage lid in FIG. 25 is in the fully open state. In the state (2515), the stopper protrusions (2536, 2636) do not move and the spring right hand (2533, 2633) is fixed at the same position, and the pressure protrusions (2535, 2635) are fixed to the spring left hand (2534, 2634). Will be pushed in as the lid holder gear rotates. That is, in FIG. 25 in which the tray storage lid is in the fully open state, the left hand of the spring pushes back the pressing protrusion (2535) in the direction of the arrow in the figure. The urging force is a force for moving the lid holder gear (2515) in the direction of the broken line arrow in the figure, and the lid drive gear (2514) and the lid missing gear (2513) also in the direction of the broken line arrow in the figure. The biasing force will work.

  As a result, the contact area between the main cam gear (2512) and the cover missing gear (2513) can be easily engaged when the engagement timing is reached. Note that the easily meshing mechanism is the same as that of the main cam gear and the tray missing gear described with reference to FIG. 22, and therefore detailed description thereof is omitted here.

  <Processing flow of Embodiment 2>

  A description will be given of a process in which the rotation driving of the rotating tray and the opening / closing driving of the tray storage lid are performed in synchronization with a time difference with only one drive motor.

  << Transition from closed state (standby state) to open state (open state) >>

  Hereinafter, the process of moving the disc recording / reproducing apparatus from the closed state (standby state) in FIG. 1 to the open state (open state) in FIG. 2 will be described with reference to FIGS.

  First, the user presses a switch or the like for opening and closing the tray storage lid and the rotating tray provided outside the main body. As a result of the user's operation, the mechanism drive motor (2804) of the mechanism drive motor shown in FIG. 28 starts to operate, and the worm (2805) starts to rotate. The rotational motion of the worm (2805) is transmitted to the main cam gear (2812) via the relay gear (2811). When the main cam gear (2812) starts to rotate counterclockwise in the drawing, first, as shown in FIG. 29, the contact region between the M lid missing gear stage of the main cam gear (2912) and the lid missing gear (2913). (2940) is the meshing timing. The rotational movement of the mechanism drive motor is transmitted to the lid holder gear (2915) via the lid missing gear (2913) and the lid driving gear (2914), and the tray storage lid rotates toward the open state. During this time, the contact region (2941) of the MT missing gear stage of the main cam gear (2912) and the tray missing gear (2920) is the missing tooth portion, and the tray missing gear (2920) does not rotate, and the rotating tray Does not move.

  After that, when the main cam gear (2912) further rotates counterclockwise in the drawing, as shown in FIG. 30, the contact region of the MT missing gear stage of the main cam gear (3012) and the tray missing gear (3020) ( 3041) is the meshing timing. At this time, a biasing force by a tray meshing biasing spring acts on the tray missing gear (3020), and the MT missing gear stage and the tray missing gear (3020) easily mesh with each other. The rotational movement of the mechanism drive motor is transmitted to the T holder gear (3022) via the tray missing gear (3020) and the T drive gear (3021), and the rotary tray rotates toward the open state. During this time, the contact region (3040) of the M lid missing gear stage of the main cam gear (3012) and the lid missing gear (3013) is the missing tooth portion, and the lid missing gear (3013) does not rotate, The storage lid does not move.

  The movement from the open state (open state) to the closed state (standby state) is realized by rotating the worm (2805) in the reverse direction to the above by the same mechanism as described above. Therefore, detailed description here is omitted.

  <Effect of Embodiment 2>

  The disc recording / reproducing apparatus of the present embodiment uses the “main cam gear” to enable the rotation drive of the rotating tray and the opening / closing drive of the tray storage lid by one mechanism drive motor.

  In addition, by using a “main cam gear”, “lid missing gear”, and “tray missing gear” having an M lid missing gear step and an MT missing gear step, the rotation drive of the rotating tray and the tray storage are performed. The lid opening / closing drive can be operated in synchronization with the time difference.

  Furthermore, by using the “standby biasing spring”, “tray engagement biasing spring”, and “tray storage lid engagement biasing spring”, it is easy when the missing gear comes into meshing timing. The accuracy of the time difference synchronization can be improved.

  That is, the disk recording / reproducing apparatus of the present embodiment realizes the rotation drive of the rotating tray and the opening / closing drive of the tray storage lid to be operated in time synchronization with high accuracy by using the above-described mechanism. By reducing the number, the thickness is reduced to an unprecedented level.

  << Embodiment 3 >>

  <Outline of Embodiment 3>

  The disc recording / reproducing apparatus according to the present embodiment has a “distributed side sensor” and a “non-distributed side sensor” on the disc mounting surface of the rotating tray. When the rotating tray is in the standby state, it is possible to detect the malfunction in advance.

  <Configuration of Embodiment 3>

  As shown in FIG. 33, the “unevenly distributed side sensor” (3301) and the “unevenly distributed side sensor” (3302) are installed on the rotating tray (3303) of the disk recording / reproducing apparatus, and when the disk is detected in front of itself. A “Hi” signal is sent, and a “Lo” signal is sent when a disc is not detected before itself.

  As shown in FIG. 33, when the rotating tray is in the vertical state in the standby state, the unevenly distributed side sensor (3301) is positioned on the lower side and the non-distributed side sensor (3302) is positioned on the upper side. That is, the uneven distribution side sensor (3301) transmits a “Hi” signal when the 12 cm disk is placed and enters a standby state, and when the 8 cm disk is placed and enters a standby state, When the disc enters the standby state without being loaded, a “Lo” signal is transmitted. On the other hand, the non-uniformly-distributed side sensor (3302) transmits a “Hi” signal both when a 12 cm disk is placed and in a standby state, and when an 8 cm disk is placed and enters a standby state. Then, when any disk is not placed and enters a standby state, a “Lo” signal is transmitted.

The relationship is shown in the following table.

  In this manner, the disk recording / reproducing apparatus of the present embodiment has the functions of the “unevenly-distributed side sensor” and the “unevenly-distributed side sensor” to set the mounted state on the rotating tray to “12 cm disk mounted” and “8 cm disk mounted. It is possible to identify any of the three patterns of “device” and “no disk”.

  In view of the fact that currently used discs are 12 cm discs and 8 cm discs, the positional relationship between the uneven distribution side sensor (3301) and the non-uniform distribution side sensor (3302) is that the 8 cm disc is located on the rotating tray. When placed, only one of the sensors is always positioned to transmit a “Hi” signal, and the other sensor is always positioned to transmit a “Lo” signal. That is, the disc recording / reproducing apparatus of the present embodiment is not in conformity with the functions of the unevenly distributed side sensor and the non-distributed side sensor even when used in any state such as the state of being laid down as well as the standing state as shown in FIG. It is possible to detect in advance that a disc is loaded.

  <Effect of Embodiment 3>

  The disc recording / reproducing apparatus according to the present embodiment uses the functions of the unevenly distributed side sensor and the non-distributed side sensor to detect in advance in a standby state even if a nonstandard disc is placed and prevent trouble from occurring. Is possible.

  In addition, due to the positional relationship between the unevenly distributed side sensor and the non-uniformly distributed side sensor, there is a problem in that a nonstandard disc is placed regardless of whether the disc recording / reproducing apparatus is used in a standing state or in a lying state. It can be detected in advance.

  That is, the disc recording / reproducing apparatus of the present embodiment can detect a problem that a non-standard disc is loaded even if it is used in various states by the functions of the unevenly distributed side sensor and the non-distributed side sensor. It is possible and more convenient than ever.

Closed (standby) disc recording and playback device Disc recording / reproducing device in open state (open state) Closed tray storage lid Rotating tray in standby state Open rotating tray Main cam gear Relay gear Engagement state of multiple gears 1 Lid tooth gear Tray missing gear Engagement state of main cam gear and lid tooth gear 1 Engagement state 2 of main cam gear and lid gear The meshing state of the main cam gear and the cover gears 3 Engagement state of main cam gear and cover gear Engagement state of main cam gear, lid missing gear and tray missing gear 1 Engagement state of main cam gear, lid missing gear and tray missing gear 2 Engagement state of main cam gear, lid missing gear and tray missing gear 3 Engagement state of main cam gear, lid missing gear and tray missing gear 4 Biasing spring for standby in standby state Biasing spring for standby in open state Outline diagram of biasing force of standby biasing spring Timing of meshing between main cam gear and tray missing gear Standby tray engagement bias spring Stand-by state and immediately preceding tray meshing spring Open tray storage lid engagement bias spring Tray storage lid engagement bias spring just before open Lid holder gear Engagement state of multiple gears 2 Multiple gear mesh 3 Engagement state of multiple gears 4 Open tray storage lid Engagement state of main cam gear, lid missing gear and tray missing gear 5 Uneven distribution side sensor and non-uniform distribution side sensor in rotating tray

Explanation of symbols

0101: Tray storage lid 0102: Rotating tray 0103: Main body 0104: Mechanism drive motor 0105: Worm 0106: Trays 0107: Reverse lever L
0108: Biasing spring L for standby
0109: Guide rail L

Claims (5)

A main body having a disk drive and a mechanism drive motor;
A rotating tray that is rotationally driven by a mechanism drive motor and can be placed in a standby state that is a disk readable position and an open state that is a disk loading and unloading position;
A tray storage lid that is opened and closed by the mechanism drive motor in synchronism with the rotational drive of the rotating tray so as to be open when the rotating tray is in the open state and closed when the rotating tray is in the standby state; ,
A disk recording / reproducing apparatus comprising:   2. The disk recording / reproducing apparatus according to claim 1, further comprising a standby biasing spring for biasing the rotating tray in a direction in which the standby tray is set in the open state. A main cam gear having a two-stage missing gear all three-stage structure driven by the drive motor;
A tray toothless gear that meshes with one toothless gear of the main cam gear and transmits rotational force to the rotating tray;
A tray storage lid toothless gear that meshes with other toothless gears of the main cam gear and transmits a rotational force to the tray storage lid;
The disc recording / reproducing apparatus according to claim 1, wherein a missing tooth length of the missing gear is a length for the time difference synchronous driving.   Tray missing teeth so that the contact area between the teeth of the tray missing gear and / or the tray storage lid missing gear and the teeth of the main cam gear can be easily engaged at the timing of engagement. The disk recording / reproducing apparatus according to any one of claims 1 to 3, further comprising a meshing biasing spring for biasing the teeth of the gear and / or the tray storage lid missing gear in the main cam gear meshing direction.   The disk mounting surface of the rotating tray is provided with an unevenly distributed side sensor and a non-distributed side sensor for detecting when a non-tray standard disk is unevenly distributed in the tray by the rotational drive of the rotating tray. The disc recording / reproducing apparatus according to claim 1.