JP2006309872A - Recording and/or reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To forcibly discharge a tray for pulling an optical disk or a disk cartridge into a recording and reproducing position to be in contact with an optical pickup when the tray becomes immovable for some reasons and to prevent the dustproof property of the inside of a casing from being damaged by a mechanism for forcible discharge. <P>SOLUTION: A circular opening 125 is formed at the bottom part of the casing 10, a forcible discharge gear 131 is provided on the inner side of the opening 125 so as to face the opening 125, and the circular opening 125 is normally closed by a hatch 120. When the tray 15 becomes immovable for some reasons, the hatch 120 is opened, the forcible discharge gear 131 is accessed from the circular opening 125 with a tool such as a screwdriver 134, the forcible discharge gear 131 is forcibly driven to be engaged with the other gear of a gear train 62, and thus the immovable tray 15 is pulled out by a driving motor 60. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording and / or reproducing apparatus, and more particularly to a recording and / or reproducing apparatus that draws a disk-shaped recording medium into an operating position by a tray and reads or writes a signal by a pickup while rotationally driving the disk-shaped recording medium. About.

  As disclosed in JP-A-8-33956, an optical disk is placed on a turntable, and the optical disk is rotated by a spindle motor directly connected to the turntable, and the pickup is moved in the radial direction of the optical disk. The information is read or written by accessing the information while accessing. Information is read using a phase modulation signal when the laser light emitted from the optical pickup is reflected from the surface of the optical disk. Further, in the writing operation on the optical disk, a signal is superimposed on the light irradiated by the optical pickup, thereby writing the information on the surface of the optical disk by changing the property according to the signal.

  In such an optical disk player, as disclosed in Japanese Patent Application Laid-Open No. 2003-67920, an optical disk or a disk cartridge containing an optical disk is placed on a tray, and the tray is pulled into the housing to center the optical disk. It is positioned directly above the turntable, and thereafter the turntable is raised in the axial direction to perform chucking.

  When adopting a structure in which the optical disk or the disk cartridge is drawn or ejected by the tray, for example, when the disk cartridge is placed in the reverse direction, or when the disk cartridge is not properly held in the recess of the tray, When the disk cartridge moves, the disk cartridge is tightly fitted between the holder plate and the tray, so that a load exceeding the torque of the drive motor for the tray is applied, and the tray does not move. In preparation for such a situation, a normal forced discharge mechanism is provided. However, the forced discharge mechanism forms an opening at a predetermined position of the casing, and inserts a tool or the like through the opening to forcibly drive the drive mechanism to discharge the tray. If an opening for accessing the forced ejection mechanism is provided in the housing, the dustproof property of the recording / reproducing apparatus is impaired. Therefore, in the case of an optical disc player using a laser beam with a short wavelength, there is a possibility that the quality standard cannot be achieved, or an optical pickup using a laser beam with a short wavelength is contaminated by dust and does not operate correctly.

Further, when this disc player is incorporated in a common housing together with other drive devices, the accessibility to the forced ejection mechanism is deteriorated. In other words, the top plate must be removed and accessed from the drive device side. However, when there are other parts in the vicinity of the drive device side, the tray cannot be forcibly moved unless these parts are also removed, and there is a disadvantage that the workability becomes very poor.
JP-A-8-339565 JP 2003-67920 A

  An object of the present invention is to provide a recording and / or reproducing apparatus that allows a tray to be forcibly ejected by accessing with a tool or the like from the outside when the tray becomes stationary for any reason. is there.

  Another object of the present invention is to provide a recording and / or reproducing device that does not impair dustproofness even when an access opening for forced discharge is provided.

  Still another object of the present invention is to provide a recording and / or reproducing apparatus having a forced ejection mechanism that has a small number of parts and can be realized at low cost.

  Still another object of the present invention is to provide a recording and / or reproducing apparatus in which a simple tool such as a driver can be inserted from an access opening and the tray can be easily and forcibly ejected.

  Still another object of the present invention is to provide a recording and / or reproducing apparatus having a forced discharge mechanism excellent in workability of an operation for forced discharge.

  The above-described problems and other problems of the present invention will be clarified by the technical idea of the present invention described below and the embodiments thereof.

A main invention of the present application is a recording and / or reproducing apparatus that pulls a disk-shaped recording medium into an operating position by a tray and reads or writes a signal by a pickup while rotationally driving the disk-shaped recording medium.
A recording apparatus comprising: a forcible discharge unit that moves the tray in the pull-out direction; and the forcible discharge unit forcibly moves the tray in the pull-out direction when the tray cannot be moved automatically. And / or a playback apparatus.

  Here, the forced discharge means may be accessible from the outside through an opening provided at a predetermined position of the housing. The forced discharge means may be accessible by a tool from an opening provided at the bottom of the housing and normally closed by a hatch. A drive motor for moving the tray; and a drive mechanism, and a forced discharge gear is provided facing the opening. When a tool is inserted into the opening, the forced discharge gear is connected to the drive means. The drive mechanism is driven via the forced discharge gear, and the tray may be forcibly moved in the pull-out direction. The hatch may be rotatable on the bottom surface of the housing. Further, the opening of the housing may be closed by a rotary opening / closing lid. The opening of the housing may be closed by a sliding opening / closing lid.

  In a preferred aspect of the present invention, an optical disc player is provided with a forced ejection mechanism having a rotary door. Forced discharge means that when an unexpected mechanical load is generated and the tray cannot be moved depending on the torque of the loading motor, the tray is forcibly removed from the outside with a tool such as a screwdriver. It is a mechanism for discharging. When a disc player is incorporated in a common housing together with other devices such as a video tape recorder, the disc player can be forcibly ejected from the hole in the bottom plate of the outer housing using a plus driver. For example, a hatch whose opening is closed by the tip of a driver is forcibly rotated from a hole in a bottom plate of a video recorder to expose an access hole, and a forced discharge drive gear inside the drive device is accessed to perform forced discharge. Such a configuration makes it possible to achieve both the operability of forced discharge and the dustproof property of the player.

  According to the above aspect, it is possible to achieve the dustproof specification of the optical pickup that uses laser light having a particularly short wavelength. In addition, this device is constituted by, for example, two molded parts and two springs, which makes it possible to reduce the cost of the forced discharge mechanism. Further, even after the disc player is incorporated into the video tape recorder, it is possible to operate by inserting a general tool such as a driver from the hole of the video tape recorder, thereby improving workability and serviceability.

  The main invention of the present application is a recording and / or reproducing apparatus in which a disk-shaped recording medium is drawn into an operating position by a tray and a signal is read or written by a pickup while the disk-shaped recording medium is rotationally driven. Forcibly discharging means is provided, and when the tray cannot be moved automatically, it is forcibly moved in the drawing direction by the forcible discharging means.

  Therefore, according to such a recording and / or reproducing apparatus, the tray is forcibly ejected by forcibly moving the tray in the pull-out direction by the forcible ejection means.

  The present invention will be described below with reference to embodiments shown in the drawings.

The present embodiment relates to an optical disc player in which optical pickups are arranged on both sides of a turntable so that information can be read from or written to a plurality of types of optical discs.
1. Overall description (FIGS. 1 to 18)
(1) Overall Structure FIG. 1 shows the overall configuration of the optical disc player according to the present embodiment. This optical disc player includes a housing 10 having a flat rectangular parallelepiped shape (see FIG. 6). The upper part of the housing 10 is closed by an upper cover 11 and has a front plate 12 on the front side. The front plate 12 is formed with a horizontally long opening 13, and a door 14 (see FIG. 18) is attached to cover the horizontally long opening 13 so as to be freely opened and closed.

  As shown in FIGS. 1 and 2, an elongated flat tray 15 is inserted through the horizontally long opening 13 of the front plate 12 of the housing 10 so as to be drawn out. The tray 15 is provided with a concave portion 16 for placing a disk cartridge containing an optical disk at a substantially central portion thereof. An opening 17 is formed so as to cross the bottom of the recess 16.

  A chassis 20 that is slightly smaller than the housing 10 is housed inside the housing 10. As shown in FIGS. 3 and 4, the chassis 20 has a substantially U-shaped cross section and an open top surface. A plate-like holder plate 21 is attached so as to cover the opened upper surface. The holder plate 21 is provided with a circular opening 22 at a substantially central portion thereof, and a chuck ring 23 is loosely fitted in the opening 22 and attached.

  The structure of the chassis 20 as a single unit is shown in FIG. In the chassis 20, left and right rails 25 and 26 are respectively attached to the inner sides of the left and right sides as shown in FIG. A dynamic damper 28 made of a plate-like body is attached to the upper surface of the bottom plate of the chassis 20 as shown in FIGS. The dynamic damper 28 gives a vibration damping effect to the chassis 20 by its mass.

  A pair of left and right sliders 31 and 32 are attached to the inside of both side plates of the chassis 20 together with the rails 25 and 26. The left and right sliders 31 and 32 are connected to each other by a connecting plate 33 as shown in FIGS. A rack 34 is formed on the inner side of the front end of the right slider 32. The left and right sliders 31 and 32 are provided with cam grooves 35 having inclined portions. Further, bosses 36 are formed in the vicinity of the front end sides of these cam grooves 35, and torsion coil springs 37 are attached to the bosses 36.

  A base unit 40 shown in FIGS. 14 and 15 is mounted between the left and right sliders 31 and 32 so as to be movable up and down. The base unit 40 is provided with a turntable 41 so that the rotation axis is upright at substantially the center thereof. The turntable 41 is directly connected to the output shaft of the spindle motor 42. An optical pickup 43 for DVD is disposed in front of the spindle motor 42 and on the front side of the housing 10. On the other hand, a BD (Blue-ray disc) optical pickup 44 is disposed on the back side of the turntable 41 and on the back side of the housing 10.

  The optical pickup 43 for DVD is movable in the radial direction of the optical disk in the disk cartridge drawn by the tray 15 by a pair of guide rods 45 and 46. Moreover, a feed screw 47 is disposed on the side of the left guide rod 45, and this feed screw 47 is driven by a motor 48. The engaging claw 49 of the optical pickup 43 is engaged with the feed screw 47.

  On the other hand, the BD optical pickup 44 is supported by a pair of guide rods 53 and 54 so as to be movable in the radial direction of the optical disk on the tray 15. In addition, the feed screw 55 disposed on the side of the guide rod 53 is directly connected to the motor 56. The feed screw 55 is engaged with the engaging claw 57 of the optical pickup 44.

  Driving means for driving the tray 15 is disposed on the chassis 20 at the front position of the base unit 40 as shown in FIGS. The driving means includes a driving motor 60, and the driving motor 60 is interlocked with the winding transmission mechanism 61. Further, the winding transmission mechanism 61 is interlocked with the gear train 62. As shown in FIG. 32, the drive gear 63 of the gear train 62 meshes with a rack provided on the lower surface of the tray 15 so that the tray 15 is pulled out and stored in the laterally long opening 13 of the front plate 12. . On the other hand, the drive gear 64 of the gear train 62 meshes with the rack 34 of the right slider 32 of the pair of left and right sliders 31, 32, thereby driving the slider 31 back and forth, and using the cam groove 35, the base unit is driven. 40 is moved up and down.

  In order to move the base unit 40 up and down, as shown in FIG. 14, the base unit 40 is provided with two pins 68 on the left and right sides thereof, and these pins 68 serve as cam grooves of the sliders 31 and 32. 35 (see FIG. 5), the tip 68 side portion of the pin 68 is guided by the slit 70 of the guide plate 69 and the slit 71 of the chassis 20.

(2) Overall Schematic Operation Next, the overall operation of the optical disc player will be described. The driving motor 60 drives the driving gear 63 via the winding transmission mechanism 61 and the gear train 62, and the driving gear 63 moves the tray 15 forward relative to the housing 10 as shown in FIGS. 1 and 2. Pull out to. Then, a disk cartridge or a bare disk is placed in the recess 16 of the tray 15. Thereafter, the drive motor 60 is driven in the reverse direction, and the tray 15 is pulled into the housing via the drive gear 63. When fully retracted, the center of the recess 16 of the tray 15 and the center of the turntable 41 on the base unit 40 substantially coincide.

  When the tray 15 is completely retracted into the housing 10, the front side of the slider 31 and 32 is driven through the rack 34 by the drive gear 64 of the gear train 62 driven by the drive motor 60 by a switching mechanism described later. Extruded. Then, the pins 68 are pushed upward by the inclined portions of the cam grooves 35 of the sliders 31 and 32, and the slit 70 of the guide plate 69 and the slit 71 of the chassis 20 on which the base unit 40 having the pins 68 is attached to the chassis 20. Ascend by being guided by. Therefore, the optical disk floats in the cartridge. In the case of a bare disk, it floats from the recess 16 of the tray 15. Further, in the case of a bare disk, it is chucked while being pressed from above by the chuck ring 23.

  In this way, it is driven to rotate by the spindle motor 42 via the turntable 41 in a state of floating from the tray 15 or the cartridge. At this time, one of the pair of optical pickups 43 and 44 is driven in the radial direction with respect to the optical disc. When the optical disk is a DVD, the optical pickup 43 is driven in the radial direction of the optical disk while being guided by the guide rods 45 and 46 through the feed screw 47 by the motor 48. Accordingly, information is read from or written into the optical disk by the optical pickup 43.

  When the optical disk is a BD, the feed screw 55 is driven by the motor 56. Accordingly, the optical pickup 44 moves along the guide rods 53 and 54, and information is written to or read from the optical disc by the optical pickup 44.

  After the information has been written to or read from the optical disk, the sliders 31 and 32 are directed rearward by the rack 34 via the drive gear 64 of the gear train 62 by the drive motor 60, that is, toward the back of the housing 10. And slide. Then, the pin 68 engaged with the cam groove 34 is lowered, and thereby the base unit 40 is also lowered. Accordingly, the disk cartridge is placed in the recess 16 on the tray 15.

  In this state, when the drive gear 63 of the gear train 62 is driven by the drive motor 60, the tray 15 is pushed out from the horizontally long opening 13 of the housing 10 by the drive gear 63. Accordingly, it becomes possible to take out the disk cartridge or the bare disk from the recess 16 of the tray 15.

2. Anti-vibration support mechanism for chassis (Figs. 19-27)
(1) Configuration of Anti-Vibration Support Mechanism The chassis 20 that supports the base unit 40 through the sliders 31 and 32 so as to be movable up and down is anti-vibration supported in the housing 10 via the anti-vibration support mechanism. This mechanism will be described with reference to FIGS. As shown in FIGS. 19 to 21, the chassis 20 is supported by a suspension spring 82 attached to a height adjustment mechanism 75 (see FIG. 26) on both sides of the front end and both ends of the rear end. . Further, the chassis 20 is horizontally anti-vibrated by a pair of oil dampers 90 attached to both sides of the housing 10. FIG. 20 shows a vibration isolating support mechanism showing only the oil damper 90 with the housing 10 removed. FIG. 21 shows the anti-vibration support mechanism of the chassis 20 with the oil damper removed.

  As shown in FIG. 22, the chassis 20 is suspended by suspension springs 82 hooked on the spring hooks 80 of the height adjusting mechanism 75 at the four corner portions of the chassis 20. FIG. 23 particularly shows an anti-vibration support mechanism by a pair of left and right height adjustment mechanisms 75 on the front end side of the chassis 20. FIG. 24 shows an anti-vibration support mechanism by a pair of left and right height adjustment mechanisms 75 in the back part of the chassis 20. FIG. 25 shows the anti-vibration support mechanism when the chassis 20 is viewed from the front.

  Next, the height adjusting mechanism 75 will be described with reference to FIG. The height adjusting mechanism 75 has a support shaft 76. The support shaft 76 passes through a corner portion of the bottom plate of the housing 10 and is fixed by a set screw 77 from the lower surface. A compression coil spring 79 is attached to the step 78 above the support shaft 76, and a spring hook 80 is attached to the upper end of the compression coil spring 79. The adjustment screw 81 is used for pressing. Accordingly, the spring hook 80 is pushed upward by the compression coil spring 79 and the position in the height direction is regulated while being in contact with the head of the height adjusting screw 81. The suspension springs 82 hooked on the spring hooks 80 suspend the four corner portions of the chassis 20.

(2) Vibration-proof operation of the chassis The chassis 20 is suspended through suspension springs 82 that are suspended from spring hooks 80 of the height adjustment mechanism 75 at four corners of the corner. Therefore, the vibration is supported by the suspension spring 82 in particular. That is, the suspension spring 82 provides vibration isolation in the height direction. Moreover, since the height of the spring hook 80 can be adjusted by the height adjusting screw 81, the height adjustment and the vibration isolation in the height direction are performed simultaneously.

  Further, as shown in FIG. 25, a pressing portion 91 on the front end side of the oil damper 90 attached to the outer portion of the casing 10 penetrates the outer surface of the casing 10 and is lateral to the chassis 20. To be pressed. Therefore, such an oil damper 90 provides horizontal vibration isolation.

  Therefore, according to the configuration as described above, it is possible to perform vibration isolation in the height direction and the horizontal direction, and a disturbance blocking mode necessary for high-density recording is possible. Moreover, since the mechanism 75 for performing vibration isolation in the height direction is constituted by the height adjustment mechanism, the height position adjustment is performed simultaneously. In addition, the oil damper 90 is performed in a state in which the side surface of the housing 10 is closed, so that the dustproof property in the housing 10 is not hindered.

  In addition, the optical disk player of this embodiment has a dynamic structure that constitutes a mass as shown in FIGS. 8 and 9 in order to counteract the impact that occurs when the disk drawn by the tray 15 rotates at high speed in an eccentric state. A damper 28 is provided. Such a dynamic damper 28 can cancel the vibration associated with the high-speed rotation of the optical disk.

  A torsion coil spring 37 is attached by a boss 36 on the side of the cam groove 35 of the sliders 31 and 32 (see FIG. 12), and the pins 68 of the base unit 40 are connected to the sliders 31 and 32 by these torsion coil springs 37. It presses against the lower surface of the cam groove 35 (see FIG. 43). According to such a configuration, when the base unit 40 is moved up and down by the cam groove 35 of the sliders 31 and 32 for disc chucking or chucking release, the torsion coil spring 37 is connected to the pin 68 and the cam groove 35. It is possible to prevent rattling by the clearance between the base unit 40 and the base unit 40 can be moved up and down stably.

3. Drive switching mechanism (Figs. 28-57)
(1) Configuration of Drive Switching Mechanism Next, the switching operation between the drawer 15 retracting operation and the raising / lowering operation of the base unit 40 will be described. As described above, the drive source for pulling out the tray 15 forward or pulling the tray 15 on which the disk cartridge is placed and the drive source for the raising / lowering operation of the base unit 40 are obtained as a common drive source, and the drive motor 60 is used for driving.

  A drive motor 60, a winding transmission mechanism 61, and a gear train 62 are provided on the front end side of the chassis 20 (see FIGS. 5 and 14), and the drive gear 63 in the gear train 62 is a driving means for the tray 15. (See FIG. 32). On the other hand, the drive gear 64 at the end of the gear train 62 constitutes the drive means of the base unit 40 (see FIGS. 35 to 37).

  As shown in FIGS. 32 to 37, a rack 100 is formed along the sliding direction on the inner surface of the right side wall portion of the tray 15, and the rack 100 is driven by the drive gear 63 of the gear train 62. Accordingly, the tray 15 is moved in the pulling-out direction or the storing direction.

  On the other hand, the drive gear 64 at the end of the gear train 62 is a rack formed at the front end portion on the inner surface of the right slider 32 of the pair of left and right sliders 31 and 32 connected by the connecting plate 33. 34, thereby sliding the pair of left and right sliders 31, 32 in the front-rear direction.

  For switching between the two types of driving, as shown in FIGS. 38 to 43, the switching lever 102 is located on the inner surface of the side plate of the chassis 20 and on the rear side of the slider 32, and the pin 101. Is supported rotatably. The switching lever 102 is urged to rotate clockwise by a torsion coil spring 103 wound around the pin 101. An engagement pin 104 planted at one end of the switching lever 102 falls into a pocket-like cam 105 formed at the rear end portion of the slider 32. The switching lever 102 includes a pressed pin 106 at the opposite end. The pin 106 is pressed by a protrusion 108 that faces the opening 107 of the tray 15.

  As shown in FIGS. 44 to 46, a bent leaf spring 109 is attached to the rear side portion of the opening 107 of the tray 15, and the distal end side is a deforming portion 110. The deformable portion 110 is pressed by the pressed pin 106 of the switching lever 102.

(2) Switching Operation Next, switching between the pull-in operation of the tray 15 and the raising / lowering operation of the base unit 40 will be described using the above drive mechanism and switching mechanism. As shown in FIGS. 28 and 31A, when the drive motor 60 is driven in a state where the tray 15 is completely pulled out to the front side of the housing 10, the drive gear 63 of the gear train 62 is moved into the inside of the tray 15. It engages with the rack 100 formed on the side surface, thereby pulling the tray 15 into the housing 10. 29 and 31B show a state in which the tray 15 is completely retracted into the housing 10 and positioned by the above-described operation. At this time, the drive gear 63 and the rack 100 are disengaged, and the drive gear 64 of the gear train 62 driven by the drive motor 60 is engaged with the rack 34 of the slider 32 in conjunction with the switching operation described later. This pushes the slider 32 to the right as shown in FIGS. 30 and 31C. Then, the base unit 40 having the pin 68 engaged with the cam groove 35 of the sliders 31 and 32 is pushed up by the inclined surface of the cam groove 35, thereby performing a chuck-up operation. That is, the turntable 41 on the base unit 40 moves upward in the axial direction, thereby causing the optical disk in the disk cartridge to float, or causing the bare disk held by the recess 16 of the tray 15 to float. In this way, the optical disk drawn by the tray 15 can be rotated.

  32 to 37 show driving of the racks 100 and 34 by the drive gears 63 and 64. FIG. 32 shows that the tray 15 is completely pulled out, and the drive gear 63 of the gear train 62 is connected to the tray 15. A state in which the rack 100 is engaged in the vicinity of the left end side of the rack 100 is shown. When the drive motor 60 is driven in such a state, the rack 100 is sent to the left by the drive gear 63, and the tray 15 is pulled toward the back of the housing 10, that is, toward the left. FIG. 33 and FIG. 34 show a state during such retraction. When the tray 15 is pulled almost completely, the state shown in FIG. 35 is reached, and the drive gear 63 of the gear train 62 is detached from the right end of the rack 100.

  The drive gear 64 at the end of the gear train 62 meshes with the right end of the rack 34 of the slider 32 almost in conjunction with the release of the drive of the tray 15. Moreover, since the drive gear 64 is rotated in the opposite direction (clockwise) to the drive gear 63, when the motor 60 is continuously driven, the tray 15 is retracted as shown in FIG. In contrast, the slider 32 is pushed rightward by the drive gear 64. FIG. 37 shows a state in which the slider 32 is almost completely pushed out. In this pushing position, the cam groove 35 of the sliders 31 and 32 pushes up the pin 68 as described above, thereby raising the base unit 40. Complete the chuck-up operation. At this position, the rotation of the drive motor 60 stops in conjunction with the detection operation by a sensor (not shown).

  Next, the operation of the switching lever 102 when the tray 15 and the sliders 31, 32 are switched will be described with reference to FIGS. FIG. 38 shows a state in which the tray 15 is pulled out largely, and the tray 15 is being pulled in by the drive gear 63 of the gear train 62. In a state immediately before the tray 15 is completely retracted, as shown in FIG. 39, the pressed pin 106 of the switching lever 102 enters the opening 107 of the tray 15 and is switched by the projection 108 facing one end of the opening 107. The pressed pin 106 of the lever 102 is pressed. Accordingly, the switching lever 102 is rotated counterclockwise about the pin 102 against the torsion coil spring 103. Then, as shown in FIG. 40, the engaging pin 104 on the other end side of the switching lever 102 presses the vertical wall portion on the right side of the pocket-shaped cam 105 of the slider 32. As a result, the slider 32 is pushed rightward and slides in the same direction as shown in FIG. Then, the tip end portion of the rack 34 of the slider 32 meshes with the drive gear 64 of the gear train 62 (see FIG. 35). Therefore, after this, the sliders 31 and 32 are driven by the drive gear 64 of the gear train 62 and moved to the right.

  In this manner, the switching lever 102 is configured to give a trigger that meshes with the drive gear 64 to the slider 32 in conjunction with the tray 15 being almost completely pulled into the housing 10. In order to receive a pressing force from the switching lever 102 and to give a drive trigger to the slider 32, the pocket cam 105 formed at the rear of the slider 32 is the last tooth of the rack 100 on the tray 15 during the retracting process of the tray 15. However, at the timing of reaching the addendum circle of the tray drive gear 63, the first teeth of the rack 34 of the slider 32 that moves the base unit 40 up and down are set to reach the addendum circle of the drive gear 64. This position is determined by the position of the vertical wall of the pocket cam 105 pressed by the engagement pin 104 of the switching lever 102.

  As shown in FIG. 42, when the slider 32 is pulled by the drive gear 64 of the gear train 62, the engaging pin 104 of the switching lever 102 disengages the pocket-shaped cam 105 of the slider 32, and a flat portion continuous with the cam 105. 111 slides on. Therefore, the switching lever 102 is rotated counterclockwise around the pin 101 by the flat portion 111. Therefore, the pressed pin 106 on the tip end side of the switching lever 102 abuts on the deformed portion 110 of the presser spring 109 attached on the tray 15 as shown in FIG. 42, and deforms the deformed portion 110 to the left. Accordingly, the force received by the holding spring 105 at this time is transmitted to the tray 15, and the tray 15 is pushed to the left and the innermost portion of the rails 25 and 26.

  Thus, in order to separate the last tooth of the rack 100 on the tray 15 and the tray driving gear 63 in the final stroke of the pull-in of the tray 15 and to fix the tray 15 to a predetermined innermost portion of the disc player, A leaf spring 109 is installed on the tray 15 so as to receive a reaction force from the pressed pin 106 of the switching lever 102, whereby the engaging pin 104 is detached from the pocket-shaped cam 105 of the slider 32, and the flat portion 111. Is moved (see FIG. 42).

(3) Base unit guide structure (FIGS. 47 to 52)
Next, a guide mechanism for guiding the pin 68 of the base unit 40 when the chuck 32 is chucked up by the slider 32 driven by the drive gear 64 of the gear train 62 by the switching operation as described above will be described. As shown in FIGS. 47 to 50, guide plates 69 are attached to positions on both side plates of the chassis 20 that receive a pair of left and right pins 68 on the rear side of the base unit 40. The guide plate 69 is made of, for example, a stainless steel plate, and a slit 70 is formed at a substantially intermediate position on the left and right sides so as to be surrounded by the bent pieces 115. The slit 70 constitutes a guide portion for the pin 68.

  The base unit 40 includes front and rear pins 68 on both sides thereof, but only the rear pins are guided by the slits 70 of the guide plate 69, and the front left and right pins 68 are the chassis. It slides in the slit 71 directly formed in 20 while loosely fitting. That is, here, the front and rear positioning of the pin 68 is accurately performed by the slit 70 of the rear guide plate 69, and the front end side portion of the base unit 40 moves up and down while loosely fitting in the slit 71. This ensures a reduction in the number of parts and operational stability.

  According to such a configuration, before the slider 32 moves to the right, that is, when the base unit 40 is in the lowered position, the pin 68 is in the state shown in FIG. 49 and FIG. On the other hand, when the slider 32 is driven by the drive gear 64 of the gear train 62, the pin 68 of the base unit 40 is moved upward along the slit 70 as shown in FIGS. Become. As a result, the base unit 40 can be moved up and down stably. Further, when a physical disturbance is applied, the pin 68 is buffered against the chassis 20 to prevent a direct collision, thereby preventing disturbance when the information is read from or written to the disk-shaped recording medium. Will improve.

(4) Damping structure at the time of chucking up Next, the ascending operation of the base unit 40 accompanying the sliding of the slider 32, that is, the operation of damping the sliders 31 and 32 in conjunction with the chucking up operation will be described. To do.

  As shown in FIGS. 53 and 54, protrusions 117 are formed on the upper surfaces of the left and right sliders 31 and 32, respectively. On the other hand, as shown in FIG. 55, a protrusion 118 is formed on the lower surface of the rail 26 located on the upper side. When the slider 32 is in the left position and the base unit 40 is in the lowered position as shown in FIG. 56, these protrusions 117 and 118 are separated from each other and are not in contact with each other. Therefore, in this case, there is a minute clearance between the upper surface of the slider 32 and the lower surface of the rail 26.

  On the other hand, as described above, when the rack 34 of the slider 32 is driven by the drive gear 64 of the gear train 62 and the slider 32 is slid rightward by this, as shown in FIG. 117 and the protrusion 118 on the lower surface of the rail 26 come into contact with each other, so that there is no backlash between the slider 32 and the rail 26. Therefore, it is possible to eliminate the instability of the system due to the vibration of the sliders 31 and 32 when the information is read from and written to the disk-shaped recording medium at the time of chucking.

  The chucking operation of the base unit 40 is performed by rotating the driving motor 60 in the reverse direction. At this time, the drive gear 64 of the gear train 62 is engaged with the rack 34 of the slider 32 and the slider 32 is sent to the left in FIG. At this time, the engaging pin 104 of the switching lever 102 slides on the flat surface 111 continuous with the pocket cam 105 of the slider 32 (see FIG. 43). Thereafter, the engagement pin 104 falls into the pocket cam 105 by the torsion coil spring 103 (see FIG. 38). In this state, the torsion coil spring 103 attached to the switching lever 102 applies a clockwise rotational biasing force to the switching lever 102, so that the slider 32 is moved to the left by the pocket cam 105. The rack 34 of the slider 32 is detached from the drive gear 64. That is, the spring force of the torsion coil spring 103 attached to the switching lever 102 acts to release the rack 34 of the slider 32 from the drive gear 64 in the final stroke of the chucking down of the base unit 40. At the same time, the spring force of the torsion coil spring 103 attached to the switching lever 102 is such that the pressed pin 106 of the switching lever 102 presses the projection 108 at the timing of the tray discharge start, and the The trigger for meshing the last tooth of the rack 100 with the drive gear 63 of the gear train 62 is given again.

4). Tray forced discharge mechanism (Figs. 58-63)
(1) Configuration of Forced Ejection Mechanism In this disc player, the tray 15 is drawn and ejected via the gear train 62 and the drive gear 63 by the drive motor 60 as described above. If a trouble such as a disc cartridge being caught between the tray 15 and the holder plate 21 occurs during such a pulling-in operation or discharging operation, the tray cannot move with the driving torque of the driving motor 60. Then, the disc player breaks down with the tray 15 stopped halfway. A similar accident also occurs when the tray with the disk cartridge mounted thereon is pulled into the housing and cannot be ejected due to some cause. In such a trouble, the tray 15 is forcibly ejected by the forcible ejection mechanism.

  The mechanism for forced discharge is provided on the bottom side of the housing 10 as shown in FIG. FIG. 58 shows a state in which the housing 10 is reversed, and a hatch 120 is rotatably attached to a front plate side portion of the housing 10 by a support shaft 121. As shown in FIG. 59, the hatch 120 is urged to rotate clockwise about a support shaft 121 by a torsion coil spring 122.

  A pair of stoppers 123 and 124 are provided so as to be positioned on the outer peripheral side of the hatch 120. The stopper 123 is a stopper for restricting the closed position, and the hatch 120 is brought into contact with the stopper 123 by the torsion coil spring 122 with the circular opening 125 closed. When the hatch 120 is opened, the maximum rotation position is regulated by the stopper 124 (see FIG. 59B). When the hatch 120 is rotated in the opening direction, the circular opening 125 of the bottom plate of the housing 10 is opened. Then, the access hole 126 formed in the bottom surface of the chassis 20 is opened through this opening. A dust-proof rib 127 is formed on the bottom surface of the housing 10 so as to engage with the hatch 120.

  The configuration of driving for forced discharge is shown in FIG. That is, the sliding shaft 130 is slidable in the height direction with respect to the chassis 20 and is rotatably mounted on the chassis 20 so as to be positioned above the circular opening 125 inside the hatch 120. . A forced discharge gear 131 is formed at a predetermined position in the height direction of the outer peripheral portion of the sliding shaft 130. The sliding shaft 130 is pressed against the chassis 20 by a compression coil spring 132. A cross groove 133 is formed at the lower end side of the sliding shaft 130 and inside thereof (see FIG. 59B), and the cross groove 133 is operated by a driver 134.

(2) Forced Discharge Operation Next, the forced discharge operation of the tray 15 by such a forced discharge mechanism will be described. FIG. 59A shows the case where the tray 15 cannot be pulled out or pulled out due to some cause, for example, due to trouble such as the disk cartridge being stuck between the tray 15 and the holder plate 21. The hatch 120 that closes the circular opening 125 is rotated clockwise as shown in FIG. 59B against the torsion coil spring 122 to expose the circular opening 125. Then, the driver 134 is inserted into the access hole 126 of the chassis 20 through the circular opening 125, and the driver 134 is engaged with the cross groove 133 formed on the bottom surface of the sliding shaft 130. When the driver 134 is further pressed in the axial direction, the forced discharge gear 131 provided on the side of the gear train 62 on the chassis 20 in the housing moves upward in the axial direction against the compression coil spring 132 (see FIG. 61) and meshes with another gear of the gear train 62. Therefore, when the driver 134 is rotated in this state, the gear train 62 is driven, and the tray 15 can be pulled out via the rack 100 by the drive gear 63 of the gear train 62. Therefore, even if the tray 15 does not move due to a load exceeding the driving torque of the motor 60, the driver 134 can perform forced discharge.

  Instead of the hatch 120, as shown in FIG. 62, the circular opening 125 may be covered with an opening / closing lid 137 that is rotatably supported by a hinge 138. Alternatively, as shown in FIG. 63, the access hole 126 may be opened by a sliding lid 141 slidable by a sliding guide 142.

5. Tray guide and sliding mechanism (Figs. 64-74)
(1) Configuration of Tray Guide and Slide Mechanism Next, a guide and slide mechanism for pushing out the tray 15 from the horizontally long opening 13 of the housing 10 and drawing the pushed tray 15 will be described. As shown in FIG. 64 and FIG. 65, the ridges 150 are formed on both sides of the back side of the tray 15 so as to protrude to the left and right sides, and on the front end side and the rear end side of the ridges 150. Each columnar portion 151 is provided continuously. These columnar portions 151 constitute a height direction restricting portion. In addition, arc-shaped protrusions 152 are formed on the upper surface and the lower surface of the protrusion 150, which are the root portions of the cylindrical portion 151, respectively. These arc-shaped protrusions 152 constitute a lateral restricting portion.

  Next, a rail for guiding the tray 15 will be described. As shown in FIG. 66, the left rail 25 is formed with a guide groove 155 along its length, and the guide groove 155 receives the left protrusion 150 of the tray 15. The cylindrical portion 151 is guided by the upper and lower surfaces of the guide groove 155. Further, a height direction presser 156 is formed on the upper surface side of the rail 25 so as to protrude inward, and a lower support 157 is continuously provided so as to face the height direction presser 156 substantially vertically. The lower support 157 is provided with a guide rib 158 so as to protrude upward on the tip side. A locking claw 159 is formed on the back side of the rail 25.

  As shown in FIG. 67, the right rail 26 is formed with a guide groove 162 along its length direction. The guide groove 162 is adapted to receive the right protrusion 150 of the tray 15 and the columnar portions 151 at both ends thereof. A height direction presser 163 is formed at the upper part of the front end side of the rail 26, and a lower support 164 is formed at the lower side. A plurality of locking claws 165 are formed on the back side of the rail 26. Furthermore, an idler gear 167 is rotatably supported on the lower surface of the rail 26 via an arm 166.

  The pair of rails 25 and 26 are attached to the chassis 20 as shown in FIG. That is, the chassis 20 is formed with an elongated insertion hole 170 corresponding to the locking claw 159, and a locking hole 171 is formed in the vicinity of the insertion hole 170. For example, the left rail 25 is attached to the inside of the left side plate of the chassis 20, and the rail 25 is brought close to the chassis 20 from the inside of the left side plate of the chassis 20. At this time, the locking claw 159 of the rail 25 is inserted into the insertion hole 170 of the chassis 20. Thereafter, the rail 25 is slid to the rear of the housing with respect to the chassis 20, that is, to the left in FIG. 68, and the hook portion on the distal end side of the locking claw 159 is locked in the locking hole 171. Thus, the rail 25 is attached and fixed to the chassis 20 without screwing.

(2) Tray sliding operation Next, the operation of the tray 15 guide and the sliding mechanism according to the above configuration will be described. As described above, the tray 15 is slidably guided in the guide grooves 155 and 162 of the left and right rails 25 and 26 by the protrusions 150 on both sides thereof, the columnar portion 151 and the arc-shaped protrusion 152. It has become. That is, since the guided portion of the tray 15 is provided at a portion other than the appearance surface, even if abrasion powder is generated due to wear of the guided portion during the sliding operation of the tray 15, it adheres to the appearance surface of the tray 15. There is nothing to do.

  Further, even when a lateral load a and a load b as shown in FIG. 69 are applied when the tray 15 is pulled out, such a load is applied to the base side of the columnar portion 151 of the protrusions 150 on both sides. It is regulated by the arcuate protrusion 152. That is, the tip ends of these arc-shaped protrusions 152 abut against the inner side surfaces of the guide grooves 155 and 162 of the rails 25 and 26. Therefore, the force due to the load a and the load b is dispersed, and the internal mechanism is not damaged.

  When the tray 15 is pulled out, the rack 100 is driven by the drive gear 63 shown in FIG. At this time, the drive gear 63 rotates clockwise. Accordingly, the guidance in the width direction when the tray 15 is opened is determined by the upper right arcuate protrusion 152 and the lower left arcuate portion 152 in FIG. If there is a dimensional variation of each part or a dimensional change due to linear expansion, guidance is determined by another arc-shaped protrusion 152, and an appropriate backlash is secured between the rack 100 of the tray 15 and the drive gear 63. The Therefore, when the tray 15 is pulled out, a large load is not applied to the drive system, and variations in the width direction can be suppressed. In addition, the upper right arc-shaped protrusion 152 and the lower left arc-shaped protrusion 152 in FIG. 72 are guided by rails 25 and 26 which are sliding parts having a seamless and uniform surface. Draw by 15 smooth operations is possible.

  In the case of a sliding operation in which the tray 15 is pushed into the casing 10 and closed, the rack 100 is driven while the drive gear 63 rotates counterclockwise as shown in FIG. Accordingly, the tray 15 is guided in the width direction by the lower right arcuate protrusion 152 in FIG. 73 and the idler gear 167 engaged with the rack 100. Here, even if there is a dimensional variation of each part or a dimensional change due to linear expansion, the tray 15 is guided by the arc-shaped protrusion 152 of another part, so that there is a gap between the rack 100 and the tray driving gear 63. Appropriate backlash is ensured. Therefore, the load does not increase during the pull-in operation of the tray 15, and variations in the position in the width direction can be suppressed. In addition, since the arc-shaped protrusion 152 is guided by the rails 25 and 26 which are sliding parts having a seamless and uniform surface, the smooth operation of the tray 15 is realized. Further, the behavior at the start and end of the operation of the tray 15 is controlled by controlling the backlash between the tray drive gear 63 and the rack 100 of the tray 15 described above, so that the swing in the width direction is suppressed, and the high accuracy is achieved. Sliding operation becomes possible.

  Next, as shown in FIGS. 71 and 74, the guide in the height direction when the tray 15 is stored and pulled out is guided by the upper and lower surfaces of the arc-shaped portion 151 by the guide grooves 155 and 162 of the rails 25 and 26. At the same time, it is determined by the lower end portion of the tray 15 being held by the lower supports 157 and 164. Even if there is a dimensional variation in each part or a dimensional change due to linear expansion, since the structure is guided by the cylindrical portion 151 described above, it is possible to suppress variations in position in the height direction. .

  Further, even when the loads c and d in the height direction as shown in FIG. 74 are applied when the tray 15 is pulled out, such loads are not only applied to the arc-shaped portion 151 but also to the heights attached to the rails 25 and 26. The load is distributed in order to be received by the vertical pressers 156 and 163 and the lower side receivers 157 and 164. This prevents damage to the internal mechanism. Further, a guide rib 158 formed so as to protrude upward at the tip of the lower support 157 of the left rail 25 is a sliding groove 168 formed on the lower surface of the tray 15 on the left side (see FIG. 65). The tray 15 is guided in the width direction. The slide groove 168 of the tray 15 and the protrusion 158 of the rail 25 that slides may be provided on the rail 26 on the drive gear side. Further, the rails 25 and 26 can be connected to the chassis 20 as an integral structure. It is also possible to employ a structure in which the idler gear 167 is pressed against the rack 100 of the tray 15 by a spring or the like.

6). Dust-proof mechanism of optical pickup (Figs. 75-82)
(1) Configuration of dust-proof mechanism of optical pickup As described above, this disc player is provided with a pair of optical pickups 43 and 44 on the base unit 40. 10 is arranged on the base unit 40 so as to be on the back side. According to such an arrangement, the structure is difficult to be exposed to dust from the horizontally long opening 13 of the housing 10. Moreover, the BD optical pickup 44 on the back side is protected by a dust protection wall 180 provided on the lower surface of the tray 15.

  FIG. 15 shows a state in which the tray 15 is reversed, and a dust protection wall 180 made of a rectangular wall portion is formed on the lower surface of the tray 15 so as to be located behind the opening 17 on the lower surface of the tray 15. It is formed. An inner portion of the protective wall 180 is a recess 183, and the optical pickup 44 when not in use is accommodated in the recess 183.

  As shown in FIG. 79, the optical pickup 44 has an abutting protrusion 181 formed on its side, and the lower surface of the tray 15 and the side of the recess 183 so as to abut against the abutting protrusion 181. Is provided with a stopper 182. Further, as shown in FIG. 80, another stopper 185 is provided outside the dust protective wall 180 and below the tray 15, and when the optical pickup 44 moves outside the recess 183, the stopper Reference numeral 185 regulates the movement of the optical pickup 44.

(2) Dustproof operation of the optical pickup When the optical pickup 44 on the base unit 40 is not used, the optical pickup 44 (see FIG. 15) is guided to the guide rods 53 and 54 by the motor 56 and the feed screw 55. However, the lower side of the tray 15 is moved to the lower side of the recess 183 formed by the dust protection wall 180. At this time, the base unit 40 is in a lowered state, that is, in a chuck down state. Therefore, even if the optical pickup 44 moves horizontally, it does not contact the protective wall 180 on the lower surface of the tray 15.

  76B, when the optical pickup 44 moves to the lower side of the recess 183 surrounded by the protective wall 180 of the tray 15, the drive motor 60 is driven, and the drive gear 64 of the gear train 62 is moved to the rack of the slider 32. 34 is driven. Accordingly, the slider 32 moves to the right in FIG. 76A, and the base unit 40 is raised through the pin 68 by the cam groove 35. Therefore, the optical pickup 44 on the base unit 40 is housed in a recess 183 on the lower surface of the tray 15 and surrounded by the protective wall 180 as shown in FIGS. 77A, B, and C. This state is the retracted position of the optical pickup 44.

  FIG. 78 shows a state in which reading / writing with respect to the optical disk is performed by another optical pickup 43. At this time, the optical disk is rotated on the turntable 41 in the clockwise direction in FIG. This optical disk is accessed with the optical pickup 43 on the base unit 40 through the opening 17 below the tray 15. At this time, even if dust is scattered in the tangential direction as indicated by the arrow, the BD optical pickup 44 in the retracted position is inside the protective wall 180 and is housed in the recess 183. Therefore, the optical pickup 44 for BD accommodated in the recess 183 is protected from dust scattered from the optical disc accessed with the other optical pickup 43.

  As described above, the BD optical pickup 44 is accommodated in the recess 183 inside the protective wall 180 formed on the lower surface of the tray 15 at the retracted position. At this time, even if an impact is applied to the disc player and a force for moving the optical pickup 44 to the right in FIG. 79 is applied, the contact protrusion 181 of the optical pickup 44 contacts the stopper 182 of the tray 15 and the retracted position. Shock inside. At this time, the optical pickup 44 does not collide with other parts. Accordingly, it becomes possible to protect the optical pickup 44.

  Further, when the optical pickup 44 is detached from the recess 183 surrounded by the protective wall 180 of the tray 15, even if the optical pickup 44 tries to move to the right as shown in FIG. It abuts against another stopper 185. Also at this time, the optical pickup 44 does not collide with other parts. Therefore, even if the optical pickup 44 moves outside the recess 183, the damage is prevented.

  In the above embodiment, the dust protection wall 180 having the recess 183 that protects the optical pickup 44 is formed on the lower surface of the tray 15, but it is not necessarily formed in a state of being coupled to the tray 15. It may be provided independently of the tray.

  When the protective wall 180 is formed on the lower surface of the tray 15 as described above, the protective wall 187 on the side where the optical pickup 44 enters the concave portion 183 is pivoted as shown in FIGS. It can also be a wall. That is, the wall portion on the entrance side of the recess 183 has a rotational structure, and thus the protective wall 187 rotates when the optical pickup 44 enters the recess 183, thereby interfering with the optical pickup 44. May be avoided. According to such a configuration, the degree of freedom of the movement operation of the optical pickup 44 at the time of entering the recess 183 is increased.

7). Disk cartridge clamping mechanism (Figs. 83-95)
(1) Configuration of Disc Cartridge Clamping Mechanism The disc player places the disc cartridge on the tray 15 and pulls it in so that the disc cartridge is mounted at a position where the optical pickups 43 and 44 are accessed. In particular, in order to securely clamp the disc cartridge, the disc cartridge is rattled against the concave portion 16 of the tray 15 by the holder 200 and the shutter opening / closing mechanism 205 to restrict the position, and thereafter, the disc is clamped using the positioning pins 223. The cartridge is clamped. In this case, since the center positions of the disc cartridge clamping positioning pins 223 and the guide holes 221 are shifted, the shape of the concave portion 16 of the disk cartridge transporting tray 15 is set so that these center positions coincide with each other. The shape is offset in advance in the length direction and the width direction.

  That is, as shown in FIG. 83, the center of the concave portion 16 on the tray 15 is offset by the amount of backlash in the length direction and width direction of the tray 15 with respect to the original virtual center to perform backlash. In this state, the center of the disk in the cartridge is aligned with the center of the turntable 41.

  Corresponding to such a configuration, a holder 200 is slidably mounted on the tray 15 so as to face a notch 201 formed so as to cross the recess 16, and the holder 200 is suspended. The winding spring 202 slidably biases the tray 15 in the drawing direction, that is, rightward in FIG. With such a holder 200, the length of the tray 15 is shifted relative to the disk cartridge.

  On the other hand, the backlash of the tray 15 in the width direction is performed by a shutter opening / closing mechanism 205 provided on the right rail 26. The shutter opening / closing mechanism 205 includes a rack 259 that is pressed against the disk cartridge 212 by a leaf spring 258 from the back side of the rack 259, and the disk 259 opens and closes the shutter by the rack 259. Then, the disk cartridge 212 is slid and urged to the left in the width direction of the tray 15 by using the urging force of the leaf spring 258 of the shutter opening / closing mechanism 205 to perform backlash in the same direction.

  The disc-shaped recording medium drawn by the tray 15 includes a disc-shaped bare disc 211 as shown in FIG. 86A, a disc cartridge 212 in which the optical disc is closed by the cartridge, and an open disc cartridge 213 in which the upper surface is opened. These three types of media can be used. With respect to the disk cartridge 212, as shown in FIGS. 87A and 87B, an access 215 on the lower surface thereof is closed by a shutter 214, and the shutter opening / closing mechanism 205 is used for opening / closing by the shutter 214. It is done. As shown in FIGS. 88A and 88B, the open disk cartridge 213 whose upper surface is opened also has an access opening 215 that is opened and closed by a shutter 214, as shown in FIGS.

  Next, a configuration for correctly pushing the disk cartridge 212 into the recess 16 of the tray 15 will be described. A plate spring 216 extending in the front-rear direction is attached to the holder plate 21 attached to the chassis 20 so as to be positioned above the tray 15. At the same time, holding portions 217 are formed at both ends of the leaf spring 216 in the length direction, and rollers 218 are rotatably attached to the holding portions 217 (see FIGS. 2 and 3). A pair of left and right pressing projections 219 is formed on the lower surface of the holder plate 21 on the tip side (see FIGS. 94 and 95), and the tray 15 is displaced by these pressing projections 219. The disk cartridge 212 placed on the disk is pressed from above.

  As shown in FIG. 89, a guide hole 221 is formed in the disk cartridge 212 so as to open to the lower surface side, and an insertion hole 222 is formed in the tray 15 corresponding to the guide hole 221. A positioning pin 223 is implanted in the base unit 40 so as to be positioned in the guide hole 221 through the insertion hole 222.

  Further, in order to restrict the lateral position of the disk cartridge 212 on the tray 15, a pressing guide 227 protrudes from the left rail 25.

(2) Clamping operation of the disc cartridge The holder 200 incorporated in the tray 15 slides in the notch 201 by the built-in helical spring 202, and the disc cartridge 212 is moved to the right in FIG. Press in the pull-out direction. Accordingly, the disk cartridge 212 is abutted against the wall portion on the drawer side of the recess 16.

  The disk cartridge 212 in the recess 16 of the tray 15 presses the disk cartridge 212 to the left via the rack 259 by the leaf spring 258 in the shutter opening / closing mechanism 205 disposed on the right side in FIG. Therefore, the disk cartridge is brought into contact with the left wall surface of the recess 16.

  Such backlashing operation means that the center of the disk cartridge 212 moves from the outer shape center to the virtual center on the tray 15 shown in FIG. The concave portion 16 of the tray 15 takes the above-mentioned backlash into consideration, and is offset in the length direction and the width direction of the tray 15 by a dimension corresponding to the backlash, and the holder 200, the shutter opening / closing mechanism 205, Is pressed so that the center of the disk cartridge 212 coincides with the virtual center.

  Also, a roller 218 attached to the lower surface of the holder plate 21 via a leaf spring 216 acts to hold the disk cartridge into the recess 16 of the tray 15 from the upper surface of the disk cartridge 212 as shown in FIG. Accordingly, the disk cartridge 212 is removed in the height direction, and is correctly brought into close contact with the concave portion 16 of the tray 15.

  In such a state, when the drive motor 60 described above is driven, the drive gear 64 of the gear train 62 is driven, and the drive gear 64 drives the rack 34 of the slider 32. Accordingly, the left and right sliders 31 and 32 connected to each other by the connecting plate 33 are moved in the front side and in the direction in which the tray 15 is drawn. Therefore, the base unit 40 having the pin 68 engaged with the cam groove 35 of the sliders 31 and 32 moves upward by the action of the cam groove 35.

  When the base unit 40 moves upward, the positioning pins 223 implanted on the base unit 40 change from the state shown in FIG. 89 to the state shown in FIG. That is, the positioning pin 223 rises and is inserted through the insertion hole 222 of the tray 15 to be engaged with the guide hole 223 of the disk cartridge 212, whereby the disk cartridge 212 is clamped and the clamping position of the disk cartridge 212 is determined. The center positions of the clamp guide pin 223 of the disk cartridge 212 and the clamp guide hole 221 of the disk cartridge 212 are slightly shifted due to variations in the dimensions of the components of the disk cartridge 212. This displacement causes a pressure angle between the conical portion of the positioning pin 223 and the guide hole 221. Such a pressure angle is absorbed by applying a biasing force of the leaf spring 216 by the roller 218 attached to the lower surface of the holder plate 21.

  Therefore, according to such a configuration, the disk cartridge 212 is clamped by the positioning pin 223 that is raised from below while being correctly pressed into the recess 16 of the tray 15, and the final position of the disk cartridge 212 is determined by the positioning pin 223. Will be determined by. Since the positioning pin 223 is provided on the base unit 40 together with the turntable 41, the optical disk in the disk cartridge 212 is correctly rotated by the turntable 41.

(3) Disc cartridge clamp release operation When the drive motor 60 is rotated in the reverse direction with the disc cartridge 212 clamped as shown in FIG. 90, the drive gear 64 of the gear train 62 reverses the rack 34 of the slider 32. It drives in the direction, that is, the direction pushed into the housing 10. Since the sliders 31 and 32 are connected to each other by the connecting plate 33, when the slider 32 is driven, the slider 31 also moves in the same direction. When the sliders 31 and 32 are moved toward the back of the housing 10, the base unit 40 having the pins 68 that engage with the cam grooves 35 of the sliders 31 and 32 is formed on the oblique surfaces of the cam grooves 35. , So that the base unit 40 moves downward. Therefore, as shown in FIG. 91, the positioning pins 223 on the base unit 40 are detached from the guide holes 221 of the disk cartridge 212. At this time, the disk cartridge 212 is pressed downward by a roller 218 attached to the lower surface of the holder plate 21 via a leaf spring 216, so that the disk cartridge 212 fits in the recess 16 of the tray 15. .

  In such a chuck-down operation, as shown in FIG. 92, the disk cartridge 212 does not operate normally due to variations in the dimensions of the components of the disk cartridge 212, and the left end of the disk cartridge 212 is the tray 15 for example. There is a possibility of climbing on the edge portion of the recess 16 of this. In order to avoid such an abnormal operation, a pressing guide 227 provided on the upper surface of the left rail 25 acts. In addition, at this time, the roller 218 attached to the lower surface of the holder plate 21 via the leaf spring 216 presses the disk cartridge 212 from the upper surface, so that the disk cartridge 212 is properly stored in the recess 16 of the tray 15.

  When the disk cartridge 212 is displaced in the length direction of the tray 15 and shifted in the drawing direction, and the tray cartridge 15 is driven in the drawing direction with the disk cartridge 212 detached from the concave portion 16 of the tray 15, FIG. As shown in FIG. 94, it collides with a pair of left and right pressing projections 219 provided on the lower surface of the holder plate 21 and at the end of the tray 15 on the drawer side. Then, the pressing projection 219 acts to push the upper surface of the disk cartridge 212 downward in the vertical direction. Therefore, the disk cartridge 212 is pushed into the recess 16 of the tray 15 and stored correctly in this case. Accordingly, even when the disc cartridge 212 is displaced in the length direction of the tray 15, the disc is correctly ejected.

  In the above embodiment, the pressing guide 227 attached to the upper surface of the left rail 25 so as to push the disk cartridge 212 from the side is formed integrally with the rail 25, but as shown in FIG. A separate member from the rail 25 may be used, and the pressing guide 227 may be pressed by the pressing spring 228. According to such a configuration, since the elastic restoring force of the pressing spring 228 can be used, the disk cartridge 212 can be correctly guided to a side with a larger stroke.

8). Optical disk clamping mechanism (Figs. 96-105)
(1) Configuration of Clamp Mechanism The optical disk player according to the present embodiment draws the disk cartridge 212, the open disk cartridge 213, and the bare disk 211 above the turntable 41 by the tray 15 as shown in FIG. That is, as shown in FIG. 97, the tray 15 is largely pulled out with respect to the holder plate 21 in the housing 10, the disk cartridge 212 is mounted in the concave portion 16, and the tray 15 is pulled into the inside in this state. A circular opening 22 is formed at substantially the center of the holder plate 21, and the chuck ring 23 is placed so as to be loosely fitted into the opening 22. The chuck ring 23 is accommodated and held inside a ring-shaped recess 235 on the upper surface of the upper cover 11 of the housing 10 (see FIGS. 100 to 103). And the edge part of the outer peripheral side of the said ring-shaped recessed part 235 becomes the circular arc-shaped recessed part 236, The smooth mounting | wearing operation | movement of the chuck ring 23 is enabled by such an arc-shaped recessed part 236.

  When the disk cartridge 212 is pulled in by the tray 15, the chuck ring 23 held by the ring-shaped recess 235 is in contact with the upper surface of the disk cartridge 212 as shown in FIG. 23 does not perform a chucking operation. On the other hand, when the open disk cartridge 213 is pulled in by the tray 15, as shown in FIG. 101, the chuck ring 23 comes into contact with the upper surface of the optical disk through the opening on the upper surface of the disk cartridge 213, and the chuck ring. 23 and the turntable 41 close the optical disk by the magnetic force of the magnet. When the bare disk 211 is pulled in by the tray 15, the chuck ring 23 comes into contact with the upper surface of the bare disk 211 and the chuck ring 23 is magnetically coupled to the turntable 41 as shown in FIG. As a result, the optical disk 211 is pressed onto the turntable 41.

  As described above, the clamping mechanism of the optical disc player according to the present embodiment is such that when the tray 15 with the disc cartridge 212, the open disc cartridge 213, or the bare disc 211 is pulled, the chuck ring 23 is disposed on the upper surface of the tray 15. The upper surface of the holder 200 and the upper surface of the disk cartridge 212 are slid. Then, the structure of the upper cover 11 for smoothly performing such a sliding operation is devised to form the ring-shaped recess 235, and the lower edge of the ring-shaped recess 235 and the edge portion on the outer peripheral side thereof are arc-shaped. A recess 236 is formed.

  Further, when the tray 15 is retracted, a plurality of inclined surfaces 248 and 249 are formed on the upper surface of the tray 15 so that the chuck ring 23 held in the ring-shaped recess 235 of the upper cover 11 slides smoothly on the tray 15. Is forming. The inclined surface 248 is formed on the tip side portion of the tray 15, while the inclined surface 249 is formed on the upper surface of the holder 200 attached to the notch 201 of the tray 15.

(2) Clamping Operation by Clamp Mechanism Next, the operation of the chuck ring 23 when the tray 15 is retracted will be described with reference to FIG. In FIG. 103A, the chuck ring 23 is supported by the circular opening 22 of the holder plate 21 and is hung from the edge of the circular opening 22 of the holder plate 21 by its own weight. As shown in FIG. 103B, when the tray 15 moves to the right, the tip of the tray 15 comes into contact with the inclined side surface of the chuck ring 23, which causes the chuck ring 23 to be flipped up, resulting in the state shown in FIG. 103C. Become.

  When the state shown in FIG. 103C is reached, since the outer peripheral portion of the lower surface of the ring-shaped recess 235 of the upper cover 11 is an arc-shaped recess 236, the chuck ring 23 has an arc-shaped portion on the right end side. The contact point 237 of the recess 236 is brought into contact, so that the chuck ring 23 cannot escape further to the right. Further, the chuck ring 23 is not caught on the edge portion of the circular opening 22 of the holder plate 21.

  If the concave portion of the upper cover 11 is a simple concave portion as shown in FIG. 105A, or if there is no arc-shaped concave portion 236 at the lower edge of the ring-shaped concave portion 235, the state shown in FIG. 105B is obtained. Although the chuck ring 23 is regulated by the contact point 240, the opposite end of the chuck ring 23 is caught by the edge portion of the circular opening 22 of the holder plate 21, so that the chuck ring 23 is moved to the tray 15. It is impossible to move smoothly on the top.

  Next, when the tray 15 further proceeds to the right as shown in FIGS. 103D and 104E as described above, the chuck ring 23 slides along the shape of the upper surface of the tray 15. When the state shown in FIG. 104F is reached, the chuck ring 23 moves so as to be inserted into the gap portion between the upper cover 11 and the holder plate 21. However, at this time, it comes into contact with the protrusion 238 on the inner peripheral side of the ring-shaped recess 235 of the upper cover 11, thereby restricting the chuck ring 23, and the chuck ring 23 moves to the right in the figure and moves to the holder plate 21. This prevents a problem of being caught between the tray 15.

  If there is no protrusion 238 of the ring-shaped recess 235 of the upper cover 11, it becomes as shown in FIG. 105C, and the chuck ring 23 is gradually pulled to the right as the tray 15 moves to the right. It will be caught between the holder plate 21 and the tray 15. Such an accident is eliminated by forming the ring-shaped recess 235 in the upper cover 11.

  Thereafter, when the tray 15 further moves to the right, the chuck ring 23 slides on the tray 15 (FIGS. 104G and H), and after relatively moving on the upper surface of the holder 200 attached to the tray 15, As shown in FIG. 104I, the upper surface of the disk cartridge 212 is slid.

  Further, in the present embodiment, the corner portion on the front end side of the tray 15 is formed into a curved surface 247, so that the chuck ring 23 and the chuck ring are brought into contact with the tray 15 particularly as shown in FIG. 103C. The contact sound with 23 is eased.

  Also, as shown in FIGS. 104E, F, and G, when the chuck ring 23 slides on the tray 15, even if a step is required without making a sudden unevenness on the upper surface of the tray 15, The upper surface of the tray 15 is a gently inclined surface and has a smooth slope shape, so that sliding noise between the chuck ring 23 and the tray 15 is reduced. As a result, the movement of the chuck ring 23 is reduced, and the contact noise between the chuck ring 23 and the upper cover 11 is also reduced.

  Further, as shown in FIG. 104H, when the chuck ring 23 slides on the upper surface of the holder 200 attached to the tray 15, there is no step between the upper surface of the holder 200 and the upper surface of the tray 15. An inclined surface 249 is formed on the upper surface of the substrate, thereby reducing both sliding sound and contact sound.

  Further, by making the retraction area of the chuck ring 23 of the upper cover 11 a ring-shaped recess 235 as in the present invention, the rigidity of the upper cover 11 is improved as compared with the case where such a ring-shaped recess 235 is not formed. Even when the chuck ring 23 is flipped up and comes into contact with the ring-shaped recess 235 of the upper cover 11, the contact noise is also reduced.

9. Disc cartridge opening / closing mechanism (Figs. 106-134)
(1) Configuration of Opening / Closing Mechanism of Disc Cartridge Next, the opening / closing mechanism of the shutter of the disc cartridge 212 in this disc player will be described. FIG. 106 shows a state in which the upper cover 11 of the outer casing 10 is removed. When the tray 15 is pulled in, the shutter opening / closing mechanism 205 is disposed so as to be positioned on the side of the tray 15. As shown in FIG. 107, the shutter opening / closing mechanism 205 is attached to the upper surface of the right rail 26 of the pair of left and right rails 25, 26 attached to the inside of the side plate of the chassis 20.

  FIG. 108 shows the overall configuration of the shutter opening / closing mechanism 205. The shutter opening / closing mechanism 205 includes a base 256 made of a synthetic resin molding, a large leaf spring 257 incorporated in the base 256, and a leaf spring 257. A small leaf spring 258 attached to the front side of the leaf spring 258 and a rack 259 attached to the base 256 so as to be located in front of the leaf spring 258. In addition, the rack 259 has elastic arms 260 extending at both ends in the length direction, and pivots 261 and 262 are formed on the front ends of the elastic arms 260, respectively.

  FIG. 109 shows the base 256, and the base 256 is provided with a locking portion 266 on the back side at the center in the length direction, and the large leaf spring 257 is locked by the locking portion 266. ing. Further, concave portions 267 and 268 are formed at both ends in the length direction of the base 256, and the pressing portions 269 at both ends of the leaf spring 257 are received by the concave portions 267 and 268, respectively.

  As shown in FIG. 110, the longer large plate spring 257 has a middle portion in the length direction locked by the locking portion 266 and is bent at both ends to constitute a pressing portion 269. These pressing portions 269 are held in the recesses 267 and 268 of the base 256, respectively.

  Next, the small leaf spring 258 will be described. The leaf spring 258 is a leaf spring having an L-shaped cross section as shown in FIG. 111 and is mounted from the top of the rack 259. And the back part of this leaf | plate spring 258 is each extended in the both ends of the length direction, and both ends are bent and the contact part 270 is formed. These abutting portions 270 are abutted against the wall portion on the back side of the base 256, whereby the intermediate portion presses the rack 259 forward.

  As shown in FIG. 112, the rack 259 to which the small leaf spring 258 is attached is formed with a rack at an intermediate portion in the length direction, and elastic arms 260 are extended at both ends in the length direction. A portion on the tip side of 260 is a pivot 261, 262. The small leaf spring 258 is held by the protrusion on the back side of the rack 259.

  The pivot 261 on the front end side of the rack 259 is retracted by a pivot retracting lever 276. As shown in FIGS. 113 to 115, the pivot retracting lever 276 slides the slide cam 273, thereby retracting the pivot 261. The slide cam 273 is provided with an inclined surface 274 on the back side thereof, and the inclined surface 274 is engaged with a protrusion 275 extending rearward from the pivot 261 of the rack 259, thereby sliding the slide cam 273. The pivot 261 is retracted by the operation.

  The pivot retraction lever 276 has a pin insertion hole 277 in the middle in the length direction thereof, and a fulcrum pin is inserted through the pin insertion hole 277. Here, the fulcrum pins are implanted in the chassis 20 disposed on the outer side of the slider 32. Therefore, the fulcrum position of the pivot retracting lever 276 is a fixed position. In addition, a notch 278 is formed on the upper end side of the pivot retracting lever 276, and the pin 272 on the distal end side of the slide cam 273 is engaged in the notch 278. Further, a locking pin 279 is planted on the lower end side of the pivot retracting lever 276, and the locking pin 279 is engaged in the notch 280 (FIGS. 3, 4, 5, 11, 12, 15) of the right slider 32. It is supposed to be combined.

  A shutter opening / closing mechanism 205 having a mechanism for retracting the pivot 261 by the pivot retracting lever 276 is mounted on the right rail 26 shown in FIG. Mounting pieces 281 and 282 are formed on the upper surface of the rail 26 at a predetermined interval, and the base 256 of the shutter opening / closing mechanism 205 is fixed by these mounting pieces 281 and 282 as shown in FIG.

  Here, in the shutter opening / closing mechanism 205 mounted between the mounting pieces 281 and 282 of the rail 26, the coil spring 285 is held at both ends in the length direction of the base 256, and the upper end of the coil spring 285 is as shown in FIG. In addition, it is pressed against the lower surface of the holder plate 21 so as to be elastically pressed from above. Accordingly, the base 256 of the shutter opening / closing mechanism 205 can be rotated clockwise as shown in FIG. 121 against the pressing force of the coil spring 285. That is, the shutter opening / closing mechanism 205 can be retracted in the height direction, and an effective amount of the pivots 261 and 262 in the normal operation is secured.

  In general, when a disc player can use a disc cartridge, it is lowered by one step from the height of the turntable 41 of the spindle motor 42 in order to secure a clearance between the disc and the outer casing (shell) of the cartridge. Positioning pins 223 are provided at the height. Therefore, when the cartridge 212 is loaded and the disk chucking is completed, the cartridge 212 is lifted from the tray 15 used for loading, and the disk is held with a clearance in the height direction. For this reason, the shutter opening / closing mechanism 205 that contributes to the opening / closing of the shutter of the cartridge 212 reduces the thickness of the pivots 261 and 262 that are directly involved in the driving of the shutter, and absorbs the up / down stroke, except when performing the opening / closing operation. It is necessary to move the cartridge 212 as the cartridge 212 moves up and down.

  If the shutter opening / closing mechanism 205 does not include such an upward / downward moving mechanism, a load that deforms or destroys the shutter opening / closing mechanism 205 or the cartridge 212 due to variations in the dimensions of the tray 15 or the disk cartridge 212 is applied. There's a problem. When this is done by reducing the height dimension of the pivots 261 and 262, a reduction in the area of the driving surface leads to a reduction in the driving force of the shutter opening / closing mechanism, and the assumed large load disk cartridge There is a problem that the opening and closing of is not guaranteed. In this respect, the mechanism for attaching the shutter opening / closing mechanism 205 according to the present embodiment, which is pressed from above by the coil spring 285, moves the shutter opening / closing mechanism 205 in the vertical direction within the range of deformation of the spring 285. The above problem can be solved.

  As shown in FIG. 124, the disk cartridge 212 opened and closed by the shutter opening / closing mechanism 205 has an inner shell 287 on its inner side, and a recess 288, a rack 289, and a notch 290 are formed in the peripheral wall portion of the inner shell 287. I have. The recess 288 is engaged with the pivot 262 of the shutter opening / closing mechanism 205. On the other hand, the rack 289 of the inner shell 287 is engaged with the rack 259 of the shutter opening / closing mechanism 205. The pivot 261 is engaged with the notch 290 of the inner shell 287. The inner shell 287 rotates and the shutter is opened and closed by these engaging operations and the operation of pulling out and inserting the tray 15 between the shutter opening and closing mechanism 205 and the disk cartridge 212.

  A holder plate 21 as shown in FIGS. 129 and 130 is attached to the upper side of the tray 15 on which the disk cartridge 212 on which the shutter is opened and closed in this way. The holder plate 21 is formed with pressing protrusions 219 on the left and right sides on the front end side. Further, bent pieces 295 are formed on the front edge side of the holder plate 21 at the left and right, respectively, and the tray 15 is drawn out by these bent pieces 295 as shown in FIGS. 133 and 134. Prevents falling off.

(2) Opening / Closing Operation of Disc Cartridge Next, the opening / closing mechanism of the disc cartridge shutter by the shutter opening / closing mechanism having the above configuration will be described. The disk cartridge 212 has an access opening 215 on the bottom side, and the access opening 215 is closed by a shutter 214. The shutter 214 is opened and closed by the rotation of the inner shell 287 of the disk cartridge 212.

  As described above, the tray 15 is driven by the drive gear 63 by the motor 60 and the gear train 62 so as to be pulled in. The shutter opening / closing mechanism 205 disposed on the rail 26 so as to be positioned on the right side of the tray 15 rotates the inner shell 287 in order to open the shutter 214 of the disk cartridge 212 in conjunction with the retracting operation of the tray 15. Move.

  When the tray 15 is retracted, the pivot 262 of the shutter opening / closing mechanism 205 first acts on the side surface of the disk cartridge 212 as shown in FIGS. 122 and 123.

  FIG. 124 shows a state before the disk cartridge 212 on the tray 15 reaches the side of the shutter opening / closing mechanism 205. At this time, the inner shell 287 is not rotated, and is a side portion and a recess 268 on the right side. Is located.

  When the tray 15 is pulled in such a state, the pivot 262 provided at the end of the rack 259 of the shutter opening / closing mechanism 205 is engaged with the recess 288 of the inner shell 287 as shown in FIG. . When the disk cartridge 212 is pulled together with the tray 15 in this state, the rack 259 of the shutter opening / closing mechanism 205 meshes with the rack 289 of the inner shell 287 as shown in FIG. Accordingly, in this state, the inner shell 287 is rotationally driven in the clockwise direction as the tray 15 is moved in conjunction with the engagement of the two racks 259 and 289, and the shutter 214 is sequentially opened accordingly.

  When the tray 15 further pulls the disk cartridge 212, the engagement between the rack 259 of the shutter opening / closing mechanism 205 and the rack 289 of the inner shell 287 is eventually released as shown in FIG. Thereafter, as shown in FIG. 127, the pivot 261 provided on the front end side of the rack 259 of the shutter opening / closing mechanism 205 is engaged with the notch 290 of the inner shell 287. This position is a state in which the shutter 214 is completely opened, and the notch 290 is located directly beside. Therefore, the optical pickup 43 or 44 can read and write signals to and from the optical disk in the disk cartridge 212 through the access opening 215 on the lower surface of the disk cartridge 212.

  Actually, when the tray 15 is completely pulled, a switching operation is performed by the switching lever 102 (see FIG. 40), and the driving force of the driving motor 60 is transferred to the slider via the driving gear 64 of the gear train 62. 32 racks 34 are driven. Accordingly, the slider 32 having the rack 34 is thereby pushed out together with the slider 31 on the opposite side toward the outlet side of the housing 10, that is, in the discharge direction of the tray 15. As described above, since the locking pin 279 of the pivot retracting lever 276 shown in FIGS. 115 and 116 is engaged with the notch 280 of the slider 32, the pivot retracting lever 276 is moved from FIG. It changes to the state of FIG. Alternatively, the state of FIG. 116A changes to the state of FIG. 116B.

  Since the pivot retracting lever 276 is rotated, the slide cam 273 engaged with the notch 278 at the upper end of the pivot retracting lever 276 is pulled toward the back side of the housing 10 in the retracting direction of the tray 15. Then, the inclined surface 274 of the slide cam 273 pulls the protrusion 275. As a result, the pivot 261 at one end of the rack 259 of the shutter opening / closing mechanism 205 is retracted. Therefore, as shown in FIG. 128, the pivot 261 moves away from the notch 290 of the inner shell 287 rotated to the position where the shutter 214 is fully opened, and thereby the pivot 261 interferes with the optical disk in the disk cartridge 212. Nothing will happen. Further, such an operation occurs even when the bare disk 211 is pulled in by the tray 15 instead of the disk cartridges 212 and 213. Therefore, it becomes possible to write signals by the bare disk 211 in a state where the pivot 261 of the shutter opening / closing mechanism 205 does not interfere with the bare disk 211.

  When the cartridge 212 is pulled in by the tray 15 and the inner shell 287 of the disk cartridge 212 is rotationally driven by the shutter opening / closing mechanism 205, the base unit 40 is in the lowered position as shown in FIG. Is separated from the disk cartridge 212. Accordingly, the rack 289 of the inner shell of the disk cartridge 212 is positioned below the pivots 261 and 262 of the shutter opening / closing mechanism 205 as shown in FIG.

  On the other hand, when the opening of the shutter 214 is completed, the sliders 31 and 32 move forward, and the base unit 40 is raised, the positioning pins 223 on the base unit 40 are as shown in FIG. Lift the disc cartridge 212. Accordingly, in this case, the rack 289 of the disk cartridge 212 moves upward relative to the rack 259 of the shutter opening / closing mechanism 205.

  At this time, if the shell of the disk cartridge 212 interferes with the pivots 261 and 262 of the shutter opening / closing mechanism 205 due to tolerances of the disk cartridge 212, the base 256 of the shutter opening / closing mechanism 205 is coiled as shown in FIG. 121A. It rotates so as to tilt clockwise against the spring 285. As a result, the tolerance of the cartridge 212 can be absorbed. When the disk cartridge 212 is subsequently retracted, the base 256 of the shutter opening / closing mechanism 205 is returned to the horizontal state by the coil spring 285 as shown in FIG. 121B.

  Next, an erroneous insertion prevention operation when the disc cartridge 212 drawn into a position accessible to the optical pickups 43 and 44 by the tray 15 is erroneously placed on the tray 15 will be described. As shown in FIGS. 129 and 130, a pressing protrusion 219 is formed on the lower surface of the holder plate 21. Therefore, when the disk cartridge 212 is placed on the concave portion 16 of the tray 15 in the reverse state as shown in FIG. 131 and the tray 15 is pulled in this state, the disk cartridge 212 is shown in FIGS. 132 and 133. The front end side portion of the holder abuts against the pressing projection 219 of the holder plate 21. For this reason, the tray 15 is pulled only to the position shown in FIG. 133B, and the pressing protrusion 219 narrows the disk cartridge 212 on the tray 15 at this position, so that the driving torque of the driving motor 60 is abnormal. The tray 15 becomes larger and the tray 15 cannot move. Accordingly, by pushing the automatic stop button in this state to perform the ejecting operation, the retracting operation based on the erroneous mounting of the disk cartridge 212 can be avoided in advance.

  In addition, this disc player can prevent the tray 15 from being pulled out so as to be accidentally dropped. This mechanism is illustrated in FIG. As described above, the bent pieces 295 are formed by bending downward on the front end side of the holder plate 21 and on both the left and right sides thereof. Therefore, when the tray 15 is pulled out largely, these bent pieces 295 come into contact with the front end portion of the protrusion 150 formed on the left and right sides of the tray 15 and at the innermost portion thereof. Accordingly, the tray 15 cannot be pulled out any further, and the drawing operation of the tray 15 stops at this position. Therefore, the tray 15 is not completely pulled out from the horizontally long opening 13 of the housing 10 and dropped off.

  In the shutter opening / closing mechanism 205 of the disk cartridge 212 according to the above embodiment, not only the one pivot 261 but also the entire shutter opening / closing mechanism 205 is retracted away from the cartridge 212 after the shutter 214 is opened. You may do it. It is also possible to provide a mechanism on the tray 15 that actively holds the disk cartridge 212 during the pull-in operation of the tray 15.

  Also, in the process of retracting the tray 15, the shutter 214 of the disk cartridge 212 is not opened and closed, and when the tray is retracted, only the shutter opening / closing mechanism 205 is slid independently to open and close the shutter 214 of the disk cartridge 212. It is also possible to perform.

  Although the present invention has been described above with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the technical idea of the invention included in the present application. For example, the present invention can be applied to a disc player for writing or reading information on optical discs of various formats. The present invention is not limited to an optical disc, and can be widely applied to a recording / reproducing apparatus using a disc-shaped recording medium.

  The present invention can be used for a disk player that uses an optical disk such as a disk cartridge or a bare disk as a recording medium and accesses the optical disk while rotating such an optical disk, thereby reading or writing information on the optical disk. It is.

FIG. 3 is an external perspective view of the disc player with the tray pulled out. 1 is an external perspective view of a disc player with an upper cover taken out. FIG. 1 is an external perspective view of a disc player with a housing removed. FIG. FIG. 2 is an external perspective view of a disc player showing a chassis portion with the holder plate removed. It is an external appearance perspective view of a base unit provided with a slider on both sides. It is an external appearance perspective view which shows the structure of a housing | casing. It is an external appearance perspective view of a chassis. It is a disassembled perspective view which shows the attachment of the dynamic damper with respect to a chassis. It is a top view of the chassis which attached the dynamic damper. It is the side view and front view of the chassis. It is an external appearance perspective view of the slider mutually connected by the connection board. It is a disassembled perspective view which shows the structure of the connection of the slider of both sides by a connection board. It is a disassembled perspective view which shows the relationship between a rail on both sides, and a guide plate. It is a disassembled perspective view which shows the relationship between a base unit and a drive mechanism. It is an external appearance perspective view of the state which attached the slider and the rail to the both sides of the base unit. It is an external appearance perspective view of a tray. It is an external appearance perspective view of a holder plate. FIG. 4 is an exploded perspective view of an upper cover including a door 14. 1 is an external perspective view showing a chassis suspension structure in a housing 10. It is an external appearance perspective view of the state which suspended the four corner parts of the chassis by the suspension apparatus provided with a height adjustment mechanism, respectively. FIG. 4 is an external perspective view of a state in which the chassis is suspended at four corners via height adjustment mechanisms and the oil damper is removed. It is a principal part expansion perspective view which shows the suspension structure of the predetermined position of a corner. It is a principal part perspective view which shows the right-and-left suspension structure in the part by the side of an entrance. It is a principal part perspective view which shows the right-and-left suspension structure in the back part. It is the front view seen from the entrance side which shows a suspension structure. It is the external appearance perspective view and exploded perspective view of a height adjustment mechanism. It is an external appearance perspective view of the part of the bottom face side of the housing | casing 10 which shows attachment of a height adjustment mechanism. It is a top view which shows the drawer state of a tray. It is a top view of the state which pushed in the tray. It is a top view of the state which moved the slider ahead. It is a side view which shows the movement of the tray and slider shown in FIGS. It is a principal part enlarged plan view which shows the state before the drawing-in start of the tray by a drive mechanism. It is a principal part enlarged plan view which shows the drawing start state of the tray by a drive mechanism. It is a principal part enlarged plan view which shows the drawing-in state of the tray by a drive mechanism. It is a principal part enlarged plan view which shows the state of tray drawing completion by a drive mechanism. It is a principal part enlarged plan view which shows the movement start operation | movement of a slider by a drive mechanism. It is a principal part enlarged plan view which shows the movement operation | movement of the slider by a drive mechanism. It is an enlarged side view which shows the attachment of a switching lever. FIG. 6 is an enlarged side view of a state in which a protrusion of the tray has pushed a switching lever. It is an enlarged side view of the state where the switching lever started to push the slider. Furthermore, it is an enlarged side view of the state which the switching lever pushed the slider. FIG. 6 is an enlarged side view showing an operation in which the slider is driven by a drive mechanism and the switching lever presses the tray toward the back. FIG. 6 is an enlarged side view of the switching lever in a state where the slider is completely moved forward. It is a principal part perspective view which shows the attachment of the leaf | plate spring on a tray. It is an external appearance perspective view of the leaf spring. It is a principal part perspective view which shows the operation | movement which a switching lever presses a tray to the back via a leaf | plate spring. It is an external appearance perspective view of the guide plate which guides the up-and-down operation | movement of a slider. It is the external appearance perspective view seen from the inner side of the guide plate. It is a front view of a guide plate in the state where a slider exists in a lowered position. It is the principal part external appearance perspective view. It is a principal part enlarged side view when a slider moves to a raise position, being guided by a guide plate. It is the principal part expansion perspective view. It is an external appearance perspective view of the assembly state of a slider. It is a principal part perspective view of the slider which shows the protrusion provided on the slider. It is an expansion perspective view of the state which looked at the rail from the lower side. It is a principal part side view of the state which the slider has retracted. It is a principal part side view of the state which the slider advanced. It is an external appearance perspective view of the reverse state of a housing | casing which shows the hatch provided in the bottom part of the housing | casing. It is a principal part perspective view of the state which closed and opened the hatch. It is a principal part perspective view of a forced discharge mechanism. It is a principal part perspective view of the forced discharge mechanism in the state which is performing the forced discharge operation. It is a principal part perspective view which shows the structure of the opening / closing lid | cover replaced with a hatch. It is a principal part perspective view which shows the structure of the sliding cover replaced with a hatch. It is the top view and enlarged side view which show the structure of the to-be-guided part of a tray. It is the bottom view and enlarged bottom view of a tray. It is the perspective view and front view of the rail of the left side which guide a tray. It is the perspective view and front view of the rail of the right side which guide a tray. It is a principal part perspective view which shows the attachment of the rail with respect to a chassis. It is the top view which shows the guide structure by the rail in the state by which the tray was substantially pulled out, and the enlarged plan view of both sides. It is the top view of the state in which the tray was pushed almost completely, and the enlarged plan view of both sides. It is a principal part enlarged front view which shows the state which is guiding the tray with the rail of both sides. It is a principal part enlarged plan view which shows the guide structure when the tray is pulled out while being driven by the drive gear. It is a principal part enlarged plan view which shows the guide structure when the tray is drawn in while driving with a drive gear. It is the side view and enlarged side view which show a guide structure when the load of a height direction is added to the front end side of a tray in the state by which the tray was substantially pulled out. It is a bottom view of a tray provided with a dust protection wall. FIG. 4 is a side view, an enlarged vertical sectional view, and an enlarged perspective view of a main part of a tray in a chucked down state. It is a side view of a tray in a chuck-up state, a main part vertical side view, and a main part enlarged perspective view. It is a principal part enlarged plan view which shows the operation | movement of dust prevention by a dust protective wall. It is a principal part expanded vertical sectional view which shows the impact absorption operation | movement of the optical pick-up by a dust protective wall. It is a principal part enlarged vertical plan view which shows the impact absorption operation | movement of the optical pick-up by the outer side part of a dust protective wall. It is a principal part perspective view which shows the dustproof operation | movement of the optical pick-up by the dust protective wall of a modification. It is the enlarged vertical sectional view and principal part expanded side view which show the structure of the dust protection wall. FIG. 6 is a plan view of a tray for a positioning clamp of a disk cartridge that is retracted by the tray. It is a principal part top view of the tray which attached the holder which presses a disk cartridge. It is a principal part top view which shows the operation | movement of the backlash of the disc cartridge by a holder and a shutter opening / closing mechanism. It is a principal part perspective view which shows the bare disk, disk cartridge, and open | release type disk cartridge which are used with this disk player. It is the top view and bottom view of a disk cartridge. FIG. 4 is a plan view and a bottom view of an open disk cartridge. It is the longitudinal cross-sectional view which shows the press operation of the disc cartridge by the roller of a holder plate, and an expanded sectional view. It is the principal part longitudinal cross-sectional view and enlarged sectional view which show the pressing operation by the roller of the holder plate when performing a chuck-up operation. FIG. 6 is a longitudinal sectional view and an enlarged longitudinal sectional view showing a main part of a disk cartridge positioning operation when the chuck up operation is changed to a chuck down state. FIG. 7 is a main part longitudinal sectional view and an enlarged longitudinal sectional view showing a correcting operation when the disc cartridge is laterally displaced from the concave portion of the tray. FIG. 10 is a plan view and an enlarged plan view of a state where the ejection operation is performed in a state where the disc cartridge is removed from the concave portion of the tray. FIG. 10 is a front view and an enlarged front view showing a correction operation when the disk cartridge is removed from the recess of the tray and a discharge operation is performed. It is the principal part top view and enlarged plan view which show the structure of the modified example of the control guide of a horizontal direction. It is a perspective view of the tray which shows the inclination structure of an upper surface. It is a principal part perspective view which shows the relationship between a holder plate provided with a chuck ring, and a tray. It is a principal part top view in the state where the tray was pulled out to the middle. FIG. 4 is a side view, a longitudinal sectional view, and an enlarged sectional view of a main part showing a relationship between a tray drawing operation and a chuck ring. FIG. 3 is an enlarged vertical sectional view showing a main part of a relationship between a disk cartridge and a chuck ring. FIG. 10 is an enlarged longitudinal sectional view of a main part showing a chucking operation of the optical disk in the open disk cartridge. It is a principal part expanded vertical sectional view which shows the chucking operation | movement of a bare disk. FIG. 6 is an enlarged longitudinal sectional view showing a movement operation of the chuck ring onto the disk cartridge accompanying the drawing of the tray. FIG. 6 is an enlarged longitudinal sectional view showing a movement operation of the chuck ring onto the disk cartridge accompanying the drawing of the tray. FIG. 5 is a reference diagram showing a relationship between an upper cover, a holder plate and a chuck ring that do not have a chuck ring narrowing prevention structure. It is a principal part perspective view which shows attachment of the shutter opening / closing mechanism on a housing | casing. It is a principal part perspective view which shows attachment of the shutter opening / closing mechanism on a rail. It is a principal part perspective view of a shutter opening / closing mechanism. It is an external appearance perspective view of the base of a shutter opening / closing mechanism. It is an external perspective view of a large leaf spring of a shutter opening / closing mechanism. It is an external appearance perspective view of the small leaf | plate spring of a shutter opening / closing mechanism. It is an external appearance perspective view of the rack of a shutter opening / closing mechanism. It is a disassembled perspective view which shows the relationship between a pivot retraction lever and a slide cam. It is a perspective view which shows the relationship between the slide cam for retreating a pivot, a pivot retraction lever, and a rack. It is a principal part perspective view which shows the retracting operation | movement of the pivot by a pivot retracting lever and a slide cam. It is a principal part perspective view which shows the state before the retracting of the pivot by a pivot retracting lever and a slide cam, and the state after retracting. It is a perspective view of a rail provided with the structure for attachment of a shutter opening / closing mechanism. It is an external appearance perspective view of the attachment state of the shutter opening / closing mechanism with respect to the rail. It is a principal part front view which shows the engagement structure of a shutter opening / closing mechanism and a disk cartridge. It is a principal part front view which shows the engagement structure of the shutter opening / closing mechanism and disk cartridge in a chuck | zipper up state. It is a principal part enlarged plan view which shows the inclination of the shutter opening / closing mechanism in a chuck | zipper up state and a chuck | zipper down state. It is a principal part perspective view which shows the relative relationship between the disk cartridge on a tray, and a shutter opening / closing mechanism. It is a principal part enlarged front view which shows the engagement structure of the disc cartridge with respect to a shutter opening / closing mechanism. FIG. 6 is a plan view of the main part in a state before starting the opening operation of the shutter of the disk cartridge by the shutter opening / closing mechanism interlocked with the tray pulling operation; It is a principal part top view which shows the opening operation | movement of the shutter of a disc cartridge by the shutter opening / closing mechanism interlock | cooperated with the drawing-in operation | movement of a tray. It is a principal part top view which shows the opening operation | movement of the shutter of a disc cartridge by the shutter opening / closing mechanism interlock | cooperated with the drawing-in operation | movement of a tray. It is a principal part top view which shows the opening operation | movement of the shutter of a disc cartridge by the shutter opening / closing mechanism interlock | cooperated with the drawing-in operation | movement of a tray. It is a principal part enlarged plan view which shows the operation | movement which retracts a pivot in the state in which the shutter was fully open | released. It is an external appearance perspective view of a holder plate. It is the external appearance perspective view seen from the lower side of the holder plate. It is a principal part perspective view which shows the state which is drawing in the disk cartridge upside down and performing the drawing operation. It is a principal part side view which shows an incorrect insertion prevention operation | movement when a disk cartridge is pulled in reverse. It is the principal part perspective view. It is a principal part perspective view which shows the drop-off prevention operation | movement of a tray.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Housing | casing, 11 ... Upper cover, 12 ... Front plate, 13 ... Horizontal opening, 14 ... Door, 15 ... Tray, 16 ... Recess, 17 ... Opening, 20 ... Chassis, 21 ... Holder plate, 22 ... Circular opening , 23 ... chuck ring, 25 ... rail (left), 26 ... rail (right), 28 ... dynamic damper, 31 ... slider (left), 32 ... slider (right), 33 ... connecting plate, 34 ... rack, 35 ... Cam groove, 36 ... boss, 37 ... torsion coil spring, 40 ... base unit, 41 ... turn table, 42 ... spindle motor, 43 ... optical pickup (for DVD), 44 ... optical pickup (for DVR), 45, 46 ... Guide rod, 47 ... feed screw, 48 ... motor, 49 ... engagement claw, 53, 54 ... guide rod, 55 ... feed screw, 56 ... motor, 57 ... engagement claw, 60 ... drive motor, 61 Winding transmission mechanism, 62 ... gear train, 63, 64 ... drive gear, 68 ... pin, 69 ... guide plate, 70 ... slit, 71 ... slit, 75 ... height adjustment mechanism, 76 ... support shaft, 77 ... set screw, 78 ... Stepped portion, 79 ... Compression coil spring, 80 ... Spring hook, 81 ... Height adjusting screw, 82 ... Suspension spring, 90 ... Oil damper, 91 ... Pressing portion (rubber), 100 ... Rack, 101 ... Pin, DESCRIPTION OF SYMBOLS 102 ... Switching lever, 103 ... Torsion coil spring, 104 ... Engagement pin, 105 ... Pocket-shaped cam, 106 ... Pressed pin, 107 ... Opening, 108 ... Projection, 109 ... Presser spring, 110 ... Deformation part, 111 ... Flat part, 115 ... bent piece, 117, 118 ... projecting part, 120 ... hatch, 121 ... spindle, 122 ... torsion coil spring, 123 ... stopper (closed position restriction), 124 ... stopper ( Mouth position restriction), 125 ... circular opening, 126 ... access hole, 127 ... rib, 130 ... sliding shaft, 131 ... forced discharge gear, 132 ... compression coil spring, 133 ... cross groove, 134 ... driver, 137 ... opening and closing Lids, 138 ... hinges, 141 ... sliding lids, 142 ... sliding guides, 150 ... ridges, 151 ... columnar portions (height direction regulating portions), 152 ... arc-shaped projections (lateral direction regulating portions), 155 ... guide groove, 156 ... height direction presser, 157 ... lower side receiver, 158 ... guide rib, 159 ... locking claw, 162 ... guide groove, 163 ... height direction presser, 164 ... lower side receiver, 165 ... locking claw DESCRIPTION OF SYMBOLS 166 ... Arm, 167 ... Idler gear, 168 ... Sliding groove, 170 ... Insertion hole, 171 ... Locking hole, 180 ... Dust protection wall, 181 ... Contact protrusion, 182 ... Stopper, 183 ... Recess, 185 ... Stopper , 18 DESCRIPTION OF SYMBOLS 7 ... Rotary wall part, 200 ... Holder, 201 ... Notch, 202 ... Helical spring, 205 ... Shutter opening / closing mechanism, 211 ... Bare disk, 212 ... Disc cartridge, 213 ... Open type disk cartridge, 214 ... Shutter, 215: Access opening, 216: Leaf spring, 217 ... Holding part, 218 ... Roller, 219 ... Pressing protrusion, 221 ... Guide hole, 222 ... Insertion hole, 223 ... Positioning pin, 227 ... Pressing guide, 228 ... Pressing Spring, 235 ... Ring-shaped recess, 236 ... Arc-shaped recess, 237 ... Contact point, 238 ... Projection, 240 ... Corner contact point, 241 ... Edge, 244 ... Corner edge, 245 ... Contact point, 247 ... Curved surface, 248, 249 ... inclined surface, 256 ... base, 257 ... leaf spring (large), 258 ... leaf spring (small), 259 ... rack, 260 ... elastic core 261, 262 ... pivot, 266 ... locking part, 267, 268 ... concave part, 269 ... pressing part, 270 ... contact part, 272 ... pin, 273 ... slide cam, 274 ... inclined surface, 275 ... projection part, 276 ... Pivot retracting lever, 277 ... Pin insertion hole, 278 ... Notch, 279 ... Locking pin, 280 ... Notch, 281, 282 ... Mounting piece, 285 ... Coil spring, 287 ... Inner shell, 288 ... Recess, 289 ... Rack 290 ... notch, 295 ... bent piece

Claims (7)

In a recording and / or reproducing apparatus that draws a disk-shaped recording medium into an operating position by a tray and reads or writes a signal by a pickup while rotationally driving the disk-shaped recording medium,
A recording apparatus comprising: a forcible discharge unit that moves the tray in the pull-out direction; and the forcible discharge unit forcibly moves the tray in the pull-out direction when the tray cannot be moved automatically. And / or playback device.   2. The recording and / or reproducing apparatus according to claim 1, wherein the forcible ejection means is accessible from the outside through an opening provided at a predetermined position of the housing.   2. The recording and / or reproducing apparatus according to claim 1, wherein the forcible ejection means is provided at the bottom of the housing and is accessible by a tool from an opening normally closed by a hatch. .   A drive motor for moving the tray and a drive mechanism are provided. A forced discharge gear is provided facing the opening. When a tool is inserted into the opening, the forced discharge gear is interlocked with the drive means. 4. The recording and / or reproducing apparatus according to claim 3, wherein the drive mechanism is driven via the forced discharge gear, and the tray is forcibly moved in the pull-out direction.   The recording and / or reproducing apparatus according to claim 3, wherein the hatch is rotatable on a bottom surface of the housing.   The recording and / or reproducing apparatus according to claim 2, wherein the opening of the housing is closed by a rotary opening / closing lid. The recording and / or reproducing apparatus according to claim 2, wherein the opening of the casing is closed by a sliding opening / closing lid.