JP3956986B2 - Disc player - Google Patents

Description

  The present invention relates to a disk player in which a cartridge holder in which a disk cartridge is inserted and held is operated to attach / detach the reproducing unit of the disk cartridge.

  Conventionally, a recording disk as an information signal recording medium such as an optical disk or a magneto-optical disk has been used. A disk player for recording or reproducing information signals on such a recording disk is used. Such a disc player is provided with a disc loading device for loading a disc cartridge containing a recording disc.

  This disk loading apparatus includes a cartridge holder that holds a disk cartridge inserted from the front side. This cartridge holder is formed as a housing having a size corresponding to a disk cartridge to be inserted and held, and at least a lower surface portion and a front surface portion are open. The front surface of the cartridge holder is the side on which the disk cartridge is inserted, and the lower surface is the side on which the disk cartridge faces the reproducing unit having the optical pickup device of the disk player.

  The cartridge holder provided in the disc loading device is supported so as to be movable in the horizontal direction and the vertical direction in the disc player. That is, the disk cartridge is inserted and removed in a state where the cartridge holder is positioned and raised on the front side of the disk loading device. When the disc cartridge is inserted, the cartridge holder is moved backward to reach the upper position of the disc player. Next, the cartridge holder is lowered to mount the disc cartridge being held on the reproducing unit.

  By the way, in a disk player using a cartridge holder for loading a disk cartridge containing a recording disk into a playback position in the player using a cassette holder, the cartridge holder in which the disk cartridge is inserted and held is kept in a stable state. It is desirable that the reproducing unit provided in the chassis can be close to or separated from the reproducing unit, and further, the strength of the mechanism for moving the cartridge holder is sufficiently ensured.

  Therefore, the present invention is proposed in view of the above-described circumstances, and realizes a stable rotation operation of the cartridge holder in which the disk cartridge is inserted and held, so that the disk cartridge can be reliably attached to and detached from the reproducing unit. An object is to provide a disc player that can be used.

  The present invention proposed to achieve the above-mentioned object is provided with a cartridge holder that is positioned on the front side and into which the disk cartridge is inserted and held, and is positioned on the lower side of the cartridge holder and stored in the disk cartridge. A mechanical chassis provided with a reproducing unit for the recording disk, a moving operation mechanism having a drive motor disposed on the rear side of the reproducing unit, and a position corresponding to the rear side of the cartridge holder. The center portion is rotatably supported by a support shaft provided in the mechanical chassis, and the tip portion is engaged with the cartridge holder so that the cartridge holder is moved toward and away from the mechanical chassis. The left and right turning arm portions and the rear end sides of these left and right turning arm portions are connected to each other so that the rear side of the moving operation mechanism And a U-shaped pivoting frame consisting of linking portions located, in which connecting portions of the pivoting frame has to be operated by the movement operation mechanism.

  The disc player according to the present invention is operated by moving the connecting portion of the U-shaped rotating frame to the moving operation mechanism, whereby the rotating operation of the rotating frame is performed. The cartridge holder supported by the rotating arm unit is moved closer to or away from the reproducing unit. In this way, by using the U-shaped rotation frame, it is possible to improve the portion and strength for rotating the cartridge holder. Further, since the rotating frame supports the cartridge holder by the left and right rotating arms, the rotating arms can be lengthened, and the cartridge holder can be moved with a small force.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  In this example, the present invention is applied to a disk loading apparatus constituting a disk player which is a recording and / or reproducing apparatus using a disk such as a magneto-optical disk or an optical disk as a recording medium.

Hereinafter, the description will be made in the following order.
[1] Disc cartridge [2] Disc loading device (2-1) Main frame and mechanical chassis (2-2) Cartridge holder (2-3) Moving operation mechanism [3] Operation of disc loading device (3-1) Initial stage State (3-2) Disc cartridge insertion operation (3-3) Disc cartridge loading operation (3-4) Disc cartridge chucking operation (3-5) Disc cartridge chucking release operation (3-6) Disc [4] Other Embodiment [1] Disc Cartridge A magneto-optical disc used as an information recording medium in this disc player is magnetically attached to a disc substrate made of a transparent synthetic resin material such as polycarbonate having a diameter of 64 mm. It is formed by applying a signal recording layer made of material. The This signal recording layer is locally heated above the so-called Curie temperature by means such as irradiation of a focused laser beam, and an information signal is written by applying an external magnetic field to the heated portion. Is called. The information signal written in this way is read out by irradiating the signal recording layer with a laser beam and detecting a reflected light beam of the laser beam.

  An optical disk is configured by forming a reflective layer made of a metal material such as aluminum on a disk substrate similar to the disk substrate of a magneto-optical disk. In this optical disc, an information signal is recorded on a disc substrate by forming fine pit rows by means such as injection molding. The information signal recorded on the optical disc is read by irradiating the pit row with a laser beam and detecting the reflected light beam of the laser beam.

  As shown in FIGS. 22 to 25, the magneto-optical disk and the optical disk are rotatably housed in cartridges 205 and 216 to constitute a disk cartridge. A cartridge 205 constituting a recording / reproducing disk cartridge 220 containing a magneto-optical disk is formed in a thin casing shape having a rectangular flat portion corresponding to the diameter of the magneto-optical disk. As shown in FIG. 22, the cartridge 205 is provided with a magnetic head opening 223 on the upper surface side for allowing a part of the signal recording surface of the magneto-optical disk to face outward. As shown in FIG. 24, the cartridge 205 is provided with an optical pickup opening 222 at a position facing the magnetic head opening 223 on the lower surface side, and a chucking opening 213 at the center portion on the lower surface side. Is provided. The recording / reproducing type disc cartridge 220 is inserted and attached to the disc player in front of an arrow C in FIGS.

  In the cartridge 205 of the recording / reproducing disk cartridge 220, the magnetic head opening 223 and the optical pickup opening 222 are opened and closed by a shutter member 206. The shutter member 206 includes a pair of shutter plates having sizes corresponding to the openings 223 and 222 and a connecting portion that connects one end sides of the shutter plates, and is integrally formed of a synthetic resin material or a metal material. Has been. The shutter member 206 is supported by a support groove 207 formed at one side of the cartridge 205 so that the connecting portion is slidable in the arrow Z direction in FIGS. That is, the shutter member 206 slides backward along one side of the cartridge 205 to open the openings 223 and 222, and slides forward from the rear to return to the initial position. Each opening 223,222 is obstruct | occluded with a board.

  The cartridge 216 constituting the read-only disk cartridge 221 containing the optical disk is formed in a thin casing shape having a rectangular flat portion whose one side corresponds to the diameter of the optical disk. As shown in FIG. 23, the cartridge 216 has no opening on the upper surface side. As shown in FIG. 25, the cartridge 216 has an optical pickup opening 222 on the lower surface side, and a chucking opening 213 is formed in the central portion on the lower surface side. This read-only disc cartridge 221 is inserted into and attached to the disc player in the direction of arrow C in FIGS.

  In the cartridge 216 of the read-only disk cartridge 221, the optical pickup opening 222 is opened and closed by a shutter member 217. The shutter member 217 has a shutter plate corresponding to the optical pickup opening 222 and a support portion provided on one end side of the shutter plate, and is integrally formed of a synthetic resin material or a metal material. The shutter member 217 is supported to be slidable in the direction of arrow Z in FIGS. 23 and 25 with a support portion supported by a support groove 207 formed on one side of the cartridge 216. That is, the shutter member 217 slides backward along one side of the cartridge 216 to open the optical pickup opening 222 and slides forward from the rear to return to the initial position. Thus, the optical pickup opening 222 is closed.

  In each of the shutter members 206 and 217, a shutter closing hole 208 is formed in the center position of the connecting portion or the supporting portion toward the side. The shutter closing hole 208 is for engaging a member for closing the shutter members 206 and 217 in the disc player.

  A circular chucking hole 204 is formed at the center of the magneto-optical disk and the optical disk. The chucking hole 204 is closed by a chucking plate 202 from the upper surface side. The chucking plate 202 is formed in a disk shape having a diameter corresponding to the chucking hole 204 by using a magnetic metal material such as iron or stainless steel. The chucking hole 204 and the chucking plate 202 face the outside of the cartridges 205 and 216 through the chucking opening 213.

  A pair of front and rear positioning holes 209 and 210 are formed on the lower surface side of each cartridge 205 and 216. The front positioning hole 209 is located in the vicinity of the edge of the flat portion on the front side of the optical pickup opening 222, and is formed in an oval shape with the major axis direction being the front-rear direction. The rear positioning hole 210 is formed in a circular shape in the vicinity of the edge of the flat portion on the rear side of the optical pickup opening 222.

  A plurality of identification holes 224 are formed in the vicinity of the other edge on the rear side of the lower surface side of each cartridge 205, 216. These identification holes 224 are used to identify the type and state of the disks stored in these cartridges 205 and 216, for example, whether or not information signals can be recorded. In the cartridge 205 of the recording / reproducing disc cartridge 220, a save notch 214 is provided on the rear side surface corresponding to the identification hole 224. When the save notch 214 is moved, the save notch 214 moves back and forth inside one of the identification holes 224 and changes the depth of the identification hole 224 to switch the identification state of whether or not the information signal can be recorded.

  Further, a pair of engaged recesses 212 and 212 are formed at both edge portions located on the front side of the lower surface side of each of the cartridges 205 and 216. An insertion guide groove 225 is formed on the other side of the cartridges 205 and 216 so as to face the support groove 207.

  In the cartridge 205 of the recording / reproducing disk cartridge 220, a magneto-optical disk identification recess 211 is formed at the front edge on the lower surface side. In addition, the cartridge 216 of the read-only disk cartridge 221 has an optical disk disc identification recess 218 formed at the front side edge on the lower surface side. The magneto-optical disc identifying recess 211 and the optical disc identifying recess 218 have different depths from the lower surface side, and the difference in depth allows the disc stored to be discriminated whether it is a magneto-optical disc or an optical disc. Has been made.

[2] Disc Loading Device (2-1) Main Frame and Mechanical Chassis The disc loading device to which the present invention is applied includes a main frame 2 as shown in FIGS. The main frame 2 has a bottom plate portion and a pair of left and right side wall portions 37 and 38 that are bent from both sides of the bottom plate portion by a material such as a metal plate. A top plate 3 is attached to the main frame 2 across the upper edge portions of the side wall portions 37 and 38. The top plate 3 is formed in a flat plate shape, and screw holes 123 are formed at each corner. In the top plate 3, set screws 122 inserted into the screw holes 123 are screwed into screw holes of screw fixing pieces 39, 40, 41, 42 provided on the upper edge portions of the side wall portions 37, 38. Is attached to the main frame 2. Each of the screwing pieces 39, 40, 41, 42 is bent so that the protruding pieces provided on the upper edge portions of the side wall portions 37, 38 are horizontal toward the inside facing each other.

  The mechanical chassis 1 is disposed between the side wall portions 37 and 38 of the main frame 2. The mechanical chassis 1 is formed in a flat plate shape, and has a pair of front and rear support shafts 15 and 16 projecting sideways on the left side edge portion, and is approximately at the center of the right side edge portion. A support shaft 17 is provided projecting toward the side. Damper members 18, 19 and 20, which are vibration absorbing members, are fitted on these support shafts 15, 16 and 17. These damper members 18, 19, and 20 are formed in a cylindrical shape from a flexible material such as butyl rubber. These damper members 18, 19, 20 are fitted into notches 34, 35, 36 formed in the side walls 37, 38. These notches 34, 35, 36 are opened upward, and the upper sides thereof are closed by tongue pieces 125, 125, 125 suspended from both side edges of the top plate 3. That is, each damper member 18, 19, 20 has an outer peripheral surface held by the inner edge of each notch 34, 35, 36 and the lower end of each tongue piece 125, 125, 125. The mechanical chassis 1 is so-called floating supported with respect to the main frame 2 via the damper members 18, 19, and 20. The mechanical chassis 1 is so supported as to be floating so that vibrations and impacts transmitted from the outside to the main frame 2 are not transmitted.

  A recording / reproducing unit for reading information signals from the magneto-optical disk or the optical disk is disposed on the mechanical chassis 1. The reproducing unit has a disk table 12 and an optical pickup device 13.

  The disk table 12 is attached to a drive shaft that protrudes to the upper surface side of the mechanical chassis 1 of the spindle motor attached to the lower surface portion of the mechanical chassis 1. The disk table 12 is formed in a disc shape and is formed so as to enter the cartridges 205 and 216 through the chucking opening 213 and fit into the chucking holes 204 of the respective disks. When the disc table 12 is fitted into the chucking hole 204, the disc is positioned and held.

  The optical pickup device 13 has a light source such as a semiconductor laser, an optical device for guiding a light beam emitted from the light source and condensing the light beam on a disk, a photodetector for detecting a reflected light beam from the disk, and the like. The information signal is read from the disk held in the disk table 12. The optical pickup device 13 is movable on the mechanical chassis 1 in a direction in which the optical pickup device 13 is in contact with or separated from the disk table 12.

  A pair of positioning pins 8 and 9 and a pair of height determining projections 10 and 11 are provided on the mechanical chassis 1. The positioning pins 8 and 9 are pins whose upper ends are tapered in diameter, and are fitted into the front and rear positioning holes 209 and 210 to position the cartridges 205 and 216 with respect to the mechanical chassis 1. . The height determining protrusions 10 and 11 determine the height position of the cartridges 205 and 216 with respect to the mechanical chassis 1 by bringing the tip portions into contact with the lower surfaces of the cartridges 205 and 216.

  In this recording / reproducing unit, the cartridges 205 and 216 are positioned by the positioning pins 8 and 9 and the height-determining protrusions 10 and 11, and the magneto-optical disk or the optical disk is held by the disk table 12. The cartridges 205 and 216 are rotated. Then, the optical pickup device 13 reads an information signal from a disk that is rotated in the cartridges 205 and 216.

(2-2) Cartridge Holder A cartridge holder 4 is disposed above the mechanical chassis 1. The cartridge holder 4 is formed in a flat plate shape corresponding to the size of the flat portion of the cartridges 205 and 216, and is supported by the mechanical chassis 1 via the rotating frame 7. The rotating frame 7 includes a pair of parallel arm portions 58 and 59 and a rear plate portion 60 that connects the rear end portions of the arm portions 58 and 59, and is formed in a U shape as a whole. The rotating frame 7 is integrally formed of a material such as a metal plate. The rotating arm 7 supports the support shafts 24, 25 by supporting the middle portions of the arm portions 58, 59 on a pair of support shafts 24, 25 projecting laterally on both sides of the mechanical chassis 1. Is supported so as to be rotatable around the center. That is, support concave portions 54 and 55 are formed on the front end sides of the arm portions 58 and 59. The support recesses 54 and 55 are fitted with support protrusions 98 and 99 projecting sideways at approximately the center of both sides of the cartridge holder 4. The rotating frame 7 is rotated about the respective support shafts 24 and 25 to move and operate the cartridge holder 4 in the up and down direction that is in contact with and away from the mechanical chassis 1.

  The rotating frame 7 includes spring locking portions 50 and 51 formed on the front end sides of the arm portions 58 and 59 and spring locking pieces 23 and 23 provided substantially at the center of the side portion of the mechanical chassis 1. A pair of tension coil springs 52 and 53 stretched corresponding to each other are rotated and biased in a direction in which the cartridge holder 4 in the direction of arrow E in FIG.

  A pair of lock arms 44 and 44 are rotatably mounted on both sides of the mechanical chassis 1 so as to be positioned on the front end side of the arm portions 58 and 59 of the rotating frame 7. The lock arms 44 and 44 have support holes 45 and 45 in the center, and a pair of support shafts 21 and 22 projecting from the both sides of the mechanical chassis 1 to the side are provided in the support holes 45 and 45. It is inserted. The lock arms 44 and 44 have engagement grooves 46 and 46 on the rear end side, and the engagement grooves 46 and 46 are engaged with the support protrusions 98 and 99 of the cartridge holder 4. The front ends of the lock arms 44 and 44 are contact portions for contacting the main frame 2.

  In this disk loading apparatus, when the rotating frame 7 moves the cartridge holder 4 in the direction of arrow P in FIG. 6, which is separated from the mechanical chassis 1, the cartridge holder 4 contacts the top plate 3 as shown in FIG. The abutment portions of the lock arms 44, 44 abut on the bottom surface portion of the main frame 2, and the abutment portion 151 on the lower edge side of the rear plate portion 60 of the rotating frame 7 is in contact with the bottom surface portion of the main frame 2. It abuts on a contact support portion 43 provided on the rear edge side. At this time, the mechanical chassis 1 is prevented from moving relative to the main frame 2 due to the deformation of the damper members 18, 19, 20.

  In this disk loading apparatus, when the rotating frame 7 moves the cartridge holder 4 in the direction of the arrow S in FIG. 7 approaching the mechanical chassis 1, the cartridge holder 4 is attached to the top plate 3 as shown in FIG. The contact portions of the lock arms 44 and 44 are separated from the bottom surface of the main frame 2, and the contact portion 151 of the rotating frame 7 is separated from the contact support portion 43. At this time, the mechanical chassis 1 can move with respect to the main frame 2 by the deformation of the damper members 18, 19, and 20.

  The cartridge holder 4 is formed by bending both side portions in a hook shape on the lower side to form cartridge holding portions 89 and 90. The cartridge holding portions 89 and 90 hold both side portions of the disk cartridges 220 and 221 when the disk cartridges 220 and 221 are inserted from the front side in the direction of arrow C in FIG. At this time, the disk cartridges 220 and 221 are held with respect to the cartridge holder 4 so as to be movable in the front-rear direction.

  In the cartridge holder 4, the disk cartridges 220 and 221 are inserted and operated to the position where the top plate portion of the cartridge holder 4 and the flat portions of the disk cartridges 220 and 221 overlap, and are moved to the mechanical chassis 1 side by the rotating frame 7. Then, the disk cartridges 220 and 221 are mounted on the reproducing unit on the mechanical chassis 1. The cartridge holder 4 has pressing protrusions 94, 95, 96, and 97 that protrude downward from the four corners of the top plate portion. The cartridge holder 4 causes the pressing protrusions 94, 95, 96, 97 to contact the four corners of the cartridges 205, 216, and the disk cartridges 220, 221 are moved to the mechanical chassis 1 side by the biasing force of the pair of tension coil springs 52, 53. Press and support.

  The cartridge holder 4 is provided with a mechanism for opening and closing the shutter members 206 and 217 of the disk cartridges 220 and 221. That is, in the cartridge holding part 90, a shutter opening operation claw 105 as a shutter opening operation member protrudes inward. When the disk cartridges 220 and 221 are inserted into the cartridge holder 4, the shutter opening operation pawl 105 enters the support groove 207 from the front end side of the cartridges 205 and 216 and the front end portions of the shutter members 206 and 217. The shutter members 206 and 217 are moved relative to the disk cartridges 220 and 221 by restricting the movement of the shutter members 206 and 217 with respect to the cartridge holder 4, so that the magnetic head opening 223 and the optical pickup The opening 222 is opened.

  A shutter cover spring 100, which is a shutter cover member, is attached to the outer side surface of the cartridge holder 4 with retaining screws 104 and 104. The shutter closing spring 100 has an engaging portion 102 whose one end is curved inward of the cartridge holder 4. The engaging portion 102 enters the cartridge holder 4 through the opening 103 provided on the side portion of the cartridge holder 4. When the disk cartridges 220 and 221 are inserted into the cartridge holder 4, the engaging portion 102 engages with the shutter closing holes 208 of the shutter members 206 and 217. When the disk cartridges 220 and 221 are ejected to the front side of the cartridge holder 4, the engaging portion 102 stops the movement of the shutter members 206 and 217 with respect to the cartridge holder 4, thereby shuttering the disk cartridges 220 and 221. The members 206 and 217 are relatively moved to close the magnetic head opening 223 and the optical pickup opening 222.

  A cartridge moving plate 5 is attached to the lower surface of the cartridge holder 4 so as to be movable in the front-rear direction. The cartridge moving plate 5 is formed in a flat plate shape having a width substantially the same as the width of the cartridge holder 4, and engagement pins 108, 109, 110 are provided on the upper surface portion. The cartridge moving plate 5 is inserted and engaged with a pair of guide holes 91 and 92 formed in the cartridge holder 4 so that the engaging pins 108, 109 and 110 are inserted and engaged with the cartridge holder 4. Has been. The pair of guide holes 91, 92 are holes for guiding the movement of the engagement pins 108, 109, 110, are formed in parallel with each other in the front-rear direction, and one engagement pin is provided in one guide hole 91. 108 is inserted and engaged, and the two engagement pins 109 and 110 are inserted and engaged with the other guide hole 92. The cartridge moving plate 5 is positioned between the top plate portion of the cartridge holder 4 and the disk cartridges 220 and 221 when the disk cartridges 220 and 221 are inserted into the cartridge holder 4.

  A rear edge side of the cartridge moving plate 5 is bent downward to form a rear wall portion 139 and further bent to a rear side in a hook shape to form an engaged groove 111. When the disk cartridges 220 and 221 are inserted into the cartridge holder 4, the rear wall portion 139 comes into contact with the front end portions of the disk cartridges 220 and 221 to position the disk cartridges 220 and 221. The engaged groove 111 is a portion in which an engaging portion 87 of a loading arm 83 described later is inserted and engaged so as to be able to contact and separate.

  A torsion spring 107 is provided so as to engage with the cartridge moving plate 5 and the cartridge holder 4. The torsion spring 107 has one arm portion engaged with a spring engagement piece 93 projecting from the upper surface portion of the cartridge holder 4 in the vicinity of the center portion of the guide hole 92, and the other arm portion is engaged with the cartridge. Projecting on the upper surface of the moving plate 5, it is locked to a spring locking piece 144 protruding upward through a guide hole 92. The torsion spring 107 has an elastic force in a direction in which the spring locking pieces 93 and 144 are separated from each other. Therefore, when the cartridge moving plate 5 is positioned on the front side of the center position of the cartridge holder 4 where the spring locking pieces 93 and 144 are closest to each other, the torsion spring 107 1. Move and urge forward in the direction of arrow A in FIG. Further, the torsion spring 107 urges the cartridge moving plate 5 to move backward in the direction of arrow B in FIGS. 1 and 4 when the cartridge moving plate 5 is located rearward of the center position of the cartridge holder 4. To do.

  As shown in FIGS. 1 and 18, a holding plate 6 that is a holding plate is attached to the lower surface side of the cartridge moving plate 5 so as to be rotatable with respect to the cartridge moving plate 5. The holding plate 6 as the holding plate is formed in a flat plate shape having the same size as the cartridge moving plate 5, and rotates with respect to the rear edge side portion of the cartridge moving plate 5 via the rear edge side portions 118 and 121. It is supported movably. In the initial state, the hold plate 6 is spaced from the cartridge moving plate 5 by a distance corresponding to the thickness of the disk cartridges 220 and 221. As shown in FIGS. When inserted, the disk cartridge is positioned below the disk cartridges 220 and 221. The hold plate 6 can be rotated downward away from the cartridge moving plate 5 and is also urged by a torsion coil spring 115 in the direction of arrow D in FIG. Is positioned.

  The holding plate 6 has a pair of holding projections 117 and 117 formed on the upper surface of both end portions. When the disc cartridges 220 and 221 are inserted on the hold plate 6, these holding projections 117 and 117 are formed as a pair of engaged recesses 212 and 216 formed on the lower surface side of the cartridges 205 and 216, as shown in FIG. 212 is engaged. As described above, when the holding projections 117 and 117 are engaged with the engaged recesses 212 and 212, the hold plate 6 returns to the initial position and holds the disk cartridges 220 and 221.

  The cartridge moving plate 5 and the hold plate 6 hold the disk cartridges 220 and 221 while being positioned on the front side of the cartridge holder 4 and are moved and moved to the rear side of the cartridge holder 4. The disc cartridges 220 and 221 are moved into the cartridge holder 4, that is, to a position on the mechanical chassis 1. Further, when the cartridge moving plate 5 and the holding plate 6 hold the disk cartridges 220 and 221 on the rear side of the cartridge holder 4, the cartridge moving plate 5 and the hold plate 6 move to the front side of the cartridge holder 4, thereby The cartridge is discharged from the cartridge holder 4.

  The hold plate 6 is provided with an erroneous insertion prevention claw 119 located behind the support shaft 118. The erroneous insertion prevention claw 119 is a contact portion 140 having an acute corner on the upper edge side of the rear end portion. When the cartridge moving plate 5 is located on the front side of the cartridge holder 4, the contact portion 140 is positioned corresponding to the contact through hole 106 formed in the top plate portion of the cartridge holder 4. . When the hold plate 6 is in the initial position, the erroneous insertion prevention claw 119 is disposed below the contact hole 106 without contacting the top plate portion of the cartridge holder 4 as shown by an arrow W in FIG. pass.

  As shown in FIG. 21, the erroneous insertion prevention claw 119 is in contact when the hold plate 6 is rotated downward in the direction of arrow U in FIG. 21 due to erroneous insertion of the disk cartridges 220 and 221. The portion 140 is caused to enter the contact through hole 106. As described above, when the contact portion 140 enters the contact through hole 106, the contact portion 140 can be moved rearward even if the cartridge moving plate 5 is moved rearward. The cartridge moving plate 5 is not moved to the rear side because it abuts against this portion.

  Incidentally, the erroneous insertion of the disk cartridges 220 and 221 means that the disk cartridges 220 and 221 are inserted with the lower surfaces provided with the engaged recesses 212 and 212 positioned upward, as shown in FIG. , 216 is inserted as the front side.

(2-3) Moving Operation Mechanism Then, in the rear side portion of the mechanical chassis 1, the disk cartridges 220 and 221 are loaded onto the mechanical chassis 1 and the disk cartridges 220 and 221 are discharged from the mechanical chassis 1. That is, a moving operation mechanism for moving the cartridge moving plate 5 is provided.

  As shown in FIGS. 1, 2, and 8, the moving operation mechanism includes a motor 64 that serves as a rotational drive unit disposed in the rear portion of the mechanical chassis 1. A worm gear 65 is attached to the drive shaft of the motor 64. The worm gear 65 meshes with a worm wheel 69 that is rotatably supported by a support shaft 30 planted in the mechanical chassis 1. The worm wheel 69 is integrally formed with a first transmission gear 70 that is a flat gear. The first transmission gear 70 meshes with a second transmission gear 71 which is a flat gear rotatably supported by a support shaft 29 planted in the mechanical chassis 1.

As shown in FIG. 17, the base end side portion of the rotation arm 136 is rotatably attached to the support shaft 29 that supports the second transmission gear 71. That is, the pivot arm 136 has the support shaft 29 inserted through a support hole 138 provided on the proximal end side. A friction member 137 is interposed between the rotating arm 136 and the second transmission gear 71. That is, the rotation arm 136 is rotated in a direction that follows the rotation direction of the second transmission gear 71. When the second transmission gear 71 is rotated in the direction of arrow _{X 1} in FIG. 8 and FIG. 17, the rotating arm 136 is rotated in the direction of arrow _{X 2} in FIG. 8 and FIG. 17. The second transmission gear 71 is rotated in the arrow _{Y 1} direction in FIG. 8 and FIG. 17, the rotating arm 136 is rotated in the arrow _{Y 2} direction in FIG. 8 and FIG. 17.

  A third transmission gear 72 that is a transmission gear constituting the present invention is rotatably attached to the distal end side of the rotating arm 136 via a support shaft 73. The third transmission gear 72 meshes with the second transmission gear 71.

  A cam gear 61 serving as a loading operation transmission member is rotatably mounted on the mechanical chassis 1 via a support shaft 27 implanted in the mechanical chassis 1. As shown in FIG. 14, the cam gear 61 has a gear portion 127 that is a first gear portion that is coaxial with the support hole 129 into which the support shaft 27 is fitted, and a flange portion 131, and is integrally formed. Has been. The gear part 127 has the 1st missing tooth part 130 over a predetermined angle range. Moreover, the flange part 131 has the defect | deletion part over a predetermined angle range. A first engagement groove 128 serving as a first engagement portion is formed on the lower surface of the flange portion 131 facing the gear portion 127. The first engagement groove portion 128 is formed in an arc shape around the support hole 129, a portion on one side of the defect portion is opened toward the defect portion, and a portion on the other side of the defect portion is a closed end. Has been.

The fourth transmission gear 63 meshes with the gear portion 127 of the cam gear 61 via the support shaft 28 implanted in the mechanical chassis 1. This fourth transmission gear 63, when the rotating arm 136 is rotated in the arrow Y ₂ direction in FIG. 8及至13, the third transmission gear 72 is meshed. When the third transmission gear 72 is engaged with the fourth transmission gear 63, the first transmission groove 72 supports the third transmission gear 72 as shown in FIGS. 8 to 10. The distal end side of the supporting shaft 73 is engaged.

  In the cam gear 61, a support shaft 73 engaged with the first engagement groove 128 is opened by the torsion coil spring (not shown) serving as a first urging member, and the first engagement groove 128 is opened to the defect portion. 1, 2 and 8 in the direction of coming out from the end portion is urged to rotate in the direction of arrow G.

  The cam gear 61 is provided with an operation pin 62 on the main surface portion on the upper surface side. The operation pin 62 is a first arm member that is rotatably supported on the mechanical chassis 1 and is inserted into a cam slit 81 provided on a fan-shaped plate 79 constituting the carry-in arm. The fan-shaped plate 79 has a support hole 80 at a position corresponding to the main part of the fan, and the support shaft 26 is inserted into the support hole 80 at the front end side of the support column 20a planted on the mechanical chassis 1. , Is supported rotatably. The cam slit 81 is linearly formed from the vicinity of the support hole 80 to the vicinity of the peripheral edge of the fan. The fan-shaped plate 79 has a guide slit 82. The guide slit 82 is formed in an arc shape around the support hole 80. The fan-shaped plate 79 is rotated via the operation pin 62 when the cam gear 61 rotates.

  Further, a proximal end side of a loading arm 83 which is a second arm member and constitutes a carry-in arm is rotatably attached to the support shaft 26. A support hole 84 through which the support shaft 26 is inserted is formed on the base end side of the loading arm 83. A guide pin 86 that is inserted and engaged with the guide slit 82 of the fan-shaped plate 79 is provided in the middle of the loading arm 83. The loading arm 83 is rotatable with respect to the fan-shaped plate 79 over the angular range of the guide slit 82 around the support hole 80. An engaging portion 87 is provided on the leading end side of the loading arm 83 so as to engage with and disengage from the engaged groove 111. The loading arm 83 is configured such that the engaging portion 87 is moved forward with respect to the fan-shaped plate 79 by a limiter spring 88 which is a torsion coil spring in which the arm portions are locked to the loading arm 83 and the fan-shaped plate 79. It is urged to rotate in the direction of arrow F in FIGS.

  On the proximal end side of the loading arm 83, a switch operation projection 85 for operating the first detection switch 77 disposed on the mechanical chassis 1 is provided. This switch operating projection 85 is a first detection switch when the loading arm 83 is rotated in the direction of arrow J in FIG. 3 and arrow L in FIG. 77 is operated.

A slider 74 serving as a chucking motion transmission member is disposed on the mechanical chassis 1. As shown in FIGS. 15 and 16, the slider 74 is formed as a rod-shaped member and has a pair of support slits 75 and 76. The slider 74 is movable in the lateral direction by inserting and engaging a pair of support shafts 31 and 32 planted on the mechanical chassis 1 in the support slits 75 and 76. The slider 74, when the rotating arm 136 is rotated in the direction of arrow X ₂ in FIG. 8及至13, the second rack gear 134 is a gear unit for the third transmission gear 72 is meshed is provided ing. The slider 74 has a second toothless portion 135 on the extension of the rack gear portion 134. Further, the slider 74 has a flange portion along the rack gear portion 134, and a second engagement groove portion 133 serving as a second engagement portion is formed on a lower surface portion of the flange portion facing the rack gear portion 134. Yes. The second engaging groove portion 133 is formed in a straight line parallel to the rack gear portion 134, and one side facing the cam gear 61 is opened and the other side is a closed end.

  In a state where the third transmission gear 72 is engaged with the rack gear portion 134, the second transmission groove 72 supports the third transmission gear 72 as shown in FIGS. The distal end side of the support shaft 73 is engaged.

  The slider 74 is a tension coil spring 126 serving as a second urging member stretched between a spring locking portion 132 provided on the slider 74 and a spring locking portion 33 protruding from the mechanical chassis 1. Thus, the direction in which the support shaft 73 engaged with the second engagement groove portion 133 is pulled out from the open end portion of the second engagement groove portion 133, that is, the rack gear portion 134 of the second toothless portion 135 is removed. 1, 2, and 8 in the direction of moving to the side, the movement is biased in the direction of arrow H.

  The slider 74 has a rear surface portion opposed to a front surface portion of the rear plate portion 60 of the rotating frame 7. A pair of horizontal cam protrusions 145 and 146 are provided on the rear surface portion of the slider 74. These cam protrusions 145 and 146 are positioned above the pair of copying pins 56 and 57 implanted in the front surface portion of the rear plate portion 60 in the initial state in which the slider 74 is moved by the biasing force of the tension coil spring 126. Thus, the copying pins 56 and 57 are pushed downward. That is, in the initial position, the slider 74 rotates the rotating frame 7 in the direction of arrow O in FIG. 6 in the direction in which the rear plate portion 60 moves to the mechanical chassis 1 side.

  When the slider 74 is moved in the direction of arrow N in FIG. 5 against the urging force of the tension coil spring 126, the cam protrusions 145 and 146 are slidably contacted with the copying pins 56 and 57, respectively. Retreat from the position above the pins 56 and 57. Then, the rotating frame 7 is moved in the direction indicated by the arrow R in FIG. 7 in the direction in which the rear plate 60 is moved away from the mechanical chassis 1 and the cartridge holder 4 is moved to the mechanical chassis 1 side by the biasing force of the pair of tension coil springs 52 and 53. Turn to.

  When the slider 74 is moved to one side against the urging force of the tension coil spring 126, as shown in FIG. 5, the second detection switch 78 disposed on the mechanical chassis 1 is moved to this slider. It is operated by 74.

When the slider 74 is moved to one side against the urging force of the tension coil spring 126, the cam protrusions 145 and 146 are sides corresponding to the second toothless portion 135 side with respect to the rack gear portion 134. The other end is opposite to the copying pins 56 and 57. These cam protrusions 145 and 146 are tapered portions 147 and 148 with the other end facing downward. Therefore, when the slider 74 is moved to the other side and returned to the initial position, the cam protrusions 145 and 146 are caused to slide the taper portions 147 and 148 against the scanning pins 56 and 57, respectively. The copying pins 56 and 57 are moved to the lower side by entering the upper side of 56 and 57.
[3] Operation of Disc Loading Device (3-1) Initial State As shown in FIGS. 2, 6, 8, and 18, the disc loading device according to the present invention configured as described above is in the initial state. The cartridge holder 4 is positioned on the upper side and is in contact with the top plate 3. The rotating frame 7 makes the contact portion 151 contact the contact support portion 43. Each of the lock arms 44, 44 is in contact with the contact portion 150 on the bottom surface of the main frame 2. The cartridge moving plate 5 is located on the front side of the cartridge holder 4 and is urged forward by the torsion spring 107 in the direction of arrow A in FIG. The hold plate 6 is urged upward in the direction of arrow D in FIG. 18, and the distance from the cartridge moving plate 5 is a distance corresponding to the thickness of the disk cartridges 220 and 221. The loading arm 83 causes the engaging portion 87 to enter the engaged groove 111. The fan-shaped plate 79 is rotated forward by the cam gear 61. The first and second detection switches 77 and 78 are not operated.

  The cam gear 61 is urged to rotate in the direction of arrow G in FIG. 8 by a torsion coil spring, and the end of the gear portion 127 facing the first missing tooth portion 130 is brought into pressure contact with the fourth transmission gear 63. The support shaft 73 is engaged with the first engagement groove portion 128 and meshes the third transmission gear 72 with the fourth transmission gear 63. The slider 74 is urged to move in the direction of arrow H in FIG.

(3-2) Disc cartridge insertion operation When the disc cartridges 220 and 221 are inserted between the cartridge moving plate 5 and the hold plate 6, as shown in FIG. 19, first, the hold plate 6 is moved downward. It is rotated. Then, as shown in FIG. 20, when the disk cartridges 220 and 221 are inserted until the front end portions are brought into contact with the rear wall portion 139, the holding projections 117 and 117 are engaged with the engaged recesses 212 and 212, respectively. Then, the hold plate 6 returns to the initial position.

  When the disk cartridges 220 and 221 are pressed rearward, the cartridge moving plate 5 is moved rearward while displacing the torsion spring 107 and loading while the limiter spring 88 is displaced, as shown in FIG. The arm 83 is rotated. As the loading arm 83 rotates, the first detection switch 77 is operated via the switch operation protrusion 85.

(3-3) by the first detection switch 77 loading operation of the disk cartridge is operated, rotation of the motor 64 is started, FIG arrow X ₃ direction is urged by the torsion coil spring cam gear 61 Rotation operation. At this time, the rotating arm 136, the third transmission gear 72 is a fourth in the direction of arrow X ₂ in rotationally biased direction in FIG. 9 to be away from the transmission gear 63, but the support shaft 73 is first Rotation is restricted by engaging with the engaging groove 128.

  The loading arm 83 is rotated backward by the cam gear 61 via the fan-shaped plate 79, and the cartridge moving plate 5 is moved backward.

  As described above, when the cartridge moving plate 5 is moved rearward and the disk cartridges 220 and 221 are transferred rearward, the shutter members 206 and 217 are brought into contact with the shutter opening operation pawl 105 at the front end portions. The engaging portion 102 of the shutter closing spring 100 is engaged with the shutter closing hole 208. In this state, when the disk cartridges 220 and 221 are transferred to the rear side, the shutter members 206 and 217 are opened at the position where the shutter opening operation pawl 105 is brought into contact with the front end portion, so that the opening operation is performed. .

  As shown in FIG. 4, when the cartridge moving plate 5 is moved to the rear side position of the cartridge holder 4, it receives the urging force of the torsion spring 107 and moves to the rear side in the direction of arrow B in FIG. The disk cartridges 220 and 221 are positioned on the mechanical chassis 1. Thus, when the cartridge moving plate 5 is moved to the rear position of the cartridge holder 4, the cam gear 61 is moved to the missing portion of the first engaging groove 128 near the support shaft 73 as shown in FIG. 10. The open end is located.

When the cam gear 61 is further rotated, as shown in FIG. 11, the pivot arm 136 has the second support shaft 73 that reaches the missing portion of the cam gear 61 and is released from the first engagement groove 128. to follow the the transmission gear 71 is rotated in 11 direction of arrow X _2, it is meshed with the third transmission gear 72 with the rack gear portion 134 of the slider 74.

(3-4) Disk Cartridge Chucking Operation The motor 64 further rotates after the cartridge moving plate 5 is moved to the rear side, and the slider 74 resists the biasing force of the tension coil spring 126 as shown in FIG. 12 in moving in the arrow _{X 4} direction. At this time, the support shaft 73 is engaged with the second engagement groove portion 133 to prevent the third transmission gear 72 from being separated from the rack gear portion 134.

  When the slider 74 moves against the urging force of the tension coil spring 126, the cartridge holder 4 moves in the direction of arrow S in FIG. Separated from the plate 3. The rotating frame 7 separates the contact portion 151 from the contact support portion 43. Each of the lock arms 44 and 44 separates the contact portion from the contact portion 150 of the main frame 2. At this time, the mechanical chassis 1 is float-supported. At this time, the engaging portion 87 of the loading arm 83 is pulled out of the engaged groove 111, and the engagement between the loading arm 83 and the cartridge moving plate 5 is released.

  Then, as shown in FIGS. 13 and 5, the slider 74 operates the second detection switch 78 when it reaches a position where the second toothless portion 135 is opposed to the third transmission gear 72. When the second detection switch 78 is operated, the motor 64 is stopped. The slider 74 presses the end of the rack gear portion 134 facing the second toothless portion 135 to the third transmission gear 72 by the urging force of the tension coil spring 126. At this time, the disk cartridges 220 and 221 held by the cartridge holder 4 are positioned and mounted on the mechanical chassis 1, and an information signal can be read out by a reproducing unit having the disk table 12 and the optical pickup device 13. It becomes a state.

(3-5) Disc cartridge chucking release operation As described above, when an operation for instructing the ejection operation is performed in a state where the disc cartridges 220 and 221 are mounted, the motor 64 causes the disc loading as described above. Drives in the opposite direction during operation. Since the slider 74 presses the end of the rack gear portion 134 facing the second toothless portion 135 to the third transmission gear 72 by the urging force of the tension coil spring 126, the third transmission gear 72 is rotated. by being, the third is meshed with rack gear 134 with the transmission gear 72 of the movement operation in FIGS. 13 and 12 in the arrow Y ₄ direction by the urging force of the tension coil spring 126. When the slider 74 is moved, the operation on the second detection switch 78 is released. At this time, the support shaft 73 is engaged with the second engagement groove portion 133 to prevent the third transmission gear 72 from being separated from the rack gear portion 134.

  When the slider 74 is moved, the cartridge holder 4 moves in the direction of the arrow P in FIG. 6 and is brought into contact with the top plate 3 as the rotating frame 7 rotates in the direction of the arrow O in FIG. The The rotating frame 7 makes the contact portion 151 contact the contact support portion 43. Each of the lock arms 44 and 44 abuts the abutting portion against the abutting portion 150 of the main frame 2. At this time, the mechanical chassis 1 is in a state where movement by the float support is restricted. At this time, the engaging portion 87 of the loading arm 83 is engaged with the engaged groove 111, and the loading arm 83 and the cartridge moving plate 5 are engaged.

  Thus, when the cartridge holder 4 is brought into contact with the top plate 3, the support shaft 73 is moved to the open end of the second engagement groove 133 by moving the slider 74 as shown in FIG. Come to be located. Then, the rotating arm 136 follows the second transmission gear 71 as shown in FIG. 10, and the third transmission gear 72 is changed to the fourth transmission gear 63 as shown by an arrow Y2 in FIG. It is rotated to the position for meshing.

(3-6) Disc Cartridge Ejection Operation When the motor 64 rotates in a state where the third transmission gear 72 is engaged with the fourth transmission gear 63, the cam gear 61 causes the support shaft 73 to engage with the first engagement. is rotationally operated in FIGS. 10 and 9 of arrow Y ₃ direction to enter the groove 128. The rotation of the rotation arm 136 is restricted by the support shaft 73 engaging the first engagement groove 128.

  The rotation of the cam gear 61 causes the loading arm 83 to rotate in a direction that causes the engaging portion 87 to be on the front side by rotating the fan-shaped plate 79 as shown in FIG. Move forward.

  Thus, when the cartridge moving plate 5 is moved forward and the disk cartridges 220 and 221 are transported forward, the shutter members 206 and 217 are engaged with the shutter closing springs 100 in the shutter closing holes 208. When the portion 102 is engaged, the shutter 102 is stopped at the position where the engaging portion 102 is engaged with the shutter closing hole 208, so that the closing operation is performed. The engaging portion 102 of the shutter closing spring 100 is configured such that after the shutter members 206 and 217 are moved to the closing position, the disk cartridges 220 and 221 are further moved forward, whereby the shutter closing spring 100 is moved. It is extracted from the shutter closing hole 208 by the elastic displacement of.

  The loading arm 83 moves the cartridge moving plate 5 to the front side with respect to the cartridge holder 4. At this time, the torsion spring 107 moves the cartridge moving plate 5 forward in the direction of arrow A in FIG. When the fan-shaped plate 79 is rotated, when the disk cartridges 220 and 221 are prevented from being ejected to the front side by an external force and the rotation of the loading arm 83 is restricted, as shown in FIG. In addition, the displacement of the limiter spring 88 prevents the rotation of the fan-shaped plate 79 from being hindered. Then, when the loading arm 83 is rotated to the initial position, the operation of the first detection switch 77 by the switch operation protrusion 85 is released.

  Then, as shown in FIG. 8, the cam gear 61 is stopped in a state in which the end of the gear portion 127 facing the first missing tooth portion 130 is pressed against the fourth transmission gear 63 by the biasing force of the torsion coil spring. The At this time, the support shaft 73 is engaged with the first engagement groove portion 128, and the third transmission gear 72 is engaged with the fourth transmission gear 63. The slider 74 is moved in the direction of arrow H in FIG. 8 in the direction urged by the tension coil spring 126.

  As shown in FIG. 20, the disk cartridges 220 and 221 are inserted between the cartridge moving plate 5 and the hold plate 6 until the front end portion comes into contact with the rear wall portion 139. 212, the holding projections 117, 117 are engaged. When the disk cartridges 220 and 221 are pulled out to the rear side, as shown in FIG. 19, the disk cartridges 220 and 221 are moved while the hold plate 6 is rotated downward, and the cartridge moving plate 5 and the hold plate 6 are moved. Is extracted from between.

  In this way, the disc loading device that has completed the ejecting operation returns to the initial state.

[4] Other Embodiments In the disk loading apparatus according to the present invention, the cam gear 61 may be replaced with a linear slider having a rack gear portion and a toothless portion and slidably supported. The slider 74 may be replaced with a rotatable cam gear having an arcuate gear portion and a toothless portion.

  In the disk loading apparatus according to the present invention, as shown in FIGS. 26 and 27, the hold plate 6 may have a lock protrusion 141 on the lower surface. This lock protrusion 141 is when the hold plate 6 is in the initial position, that is, the disk cartridges 220 and 221 are correctly inserted as shown in FIG. 26, or the disk cartridges 220 and 221 are not inserted. Sometimes, when the cartridge moving plate 5 is moved to the rear side, the cartridge moving plate 5 is moved to the rear side with a predetermined distance as shown by an arrow d in FIG.

  When the disk cartridges 220 and 221 are erroneously inserted and the hold plate 6 is rotated downward in the direction of the arrow U in FIG. 27, the lock protrusion 141 is connected to the cartridge moving plate 5 by the arrow in FIG. If it is going to be moved rearward in the W direction, the cartridge moving plate 5 is prevented from moving by coming into contact with the front end edge portion of the bottom plate portion 152.

  In the disk loading apparatus according to the present invention, as shown in FIGS. 28 and 29, each of the lock arms 44 and 44 may have an engaging groove portion 143. The engaging groove 143 is rotated in the direction of arrow O in FIG. 29 in which the rotating frame 7 makes the cartridge holder 4 contact the top plate 3, and the lock arm 44 follows the rotating frame 7. Then, when it is rotated in the direction of arrow Q in FIG. 29, it engages with the engaging pin 142 implanted in the main frame 2. At this time, the movement of the mechanical chassis 1 with respect to the main frame 2 is prevented.

  The engaging groove 143 is rotated in the direction of arrow R in FIG. 28 where the rotating frame 7 separates the cartridge holder 4 from the top plate 3, and the lock arm 44 follows the rotating frame 7. 28, when engaged in the direction of arrow T, the engagement with the engagement pin 142 is released.

It is a disassembled perspective view which shows the disc loading apparatus based on this invention used for a disc player. It is a top view which shows a disc loading apparatus. It is a top view of the disc loading apparatus which shows the state in which a disc cartridge is inserted. FIG. 3 is a plan view of the disk loading device showing a state in which the disk cartridge is inserted and held in the cartridge holder. FIG. 3 is a plan view of the disk loading device showing a state in which the disk cartridge is positioned and mounted on the reproducing unit. FIG. 4 is a side view of the disk loading device showing a state in which the disk cartridge is separated from the reproducing unit. FIG. 3 is a side view of the disk loading device showing a state in which the disk cartridge is positioned and mounted on the reproducing unit. It is a top view which shows the loading operation | movement transmission member and chucking operation | movement transmission member of a disk loading apparatus. It is a top view which shows the state which started the disc carrying-in operation of the loading operation | movement transmission member and the said chucking operation | movement transmission member, or the middle of a disc discharge operation. It is a top view which shows the state which the disc carrying-in operation of the loading operation | movement transmission member and the chucking operation | movement transmission member completed, or the state where the disc discharge operation was started. It is a top view which shows the state which starts the disk chucking operation after completion of disk carrying-in operation of a loading operation | movement transmission member and a chucking operation transmission member, or the state which completed the disk chucking release operation. It is a top view which shows the state which started the disk chucking operation of the loading operation | movement transmission member and the chucking operation transmission member, or the state in the middle of disk chucking cancellation | release operation. It is a top view which shows the state which completed the disk chucking operation of a loading operation | movement transmission member and a chucking operation | movement transmission member. It is the perspective view which looked at the loading operation | movement transmission member from the lower surface side. It is a perspective view which shows a chucking movement transmission member. It is the perspective view which looked at the chucking movement transmission member from the lower surface side. It is the perspective view which looked at the structure of the rotation arm and transmission gear for selectively moving operation of a loading operation | movement transmission member and a chucking operation | movement transmission member from the lower surface side. It is a longitudinal cross-sectional view showing a cartridge holder in which a disc cartridge is inserted and held. It is a longitudinal cross-sectional view which shows the state in the middle of inserting the disc cartridge in a cartridge holder. It is a longitudinal cross-sectional view which shows the state which inserted the disc cartridge in the cartridge holder. It is a longitudinal cross-sectional view which shows the state by which the disk cartridge was inserted into the cartridge holder in the wrong direction. FIG. 2 is a perspective view showing a recording / reproducing type disc cartridge loaded by a disc loading device. FIG. 3 is a perspective view showing a read-only disk cartridge loaded by a disk loading device. 2 is a perspective view showing a lower surface side of a recording / reproducing disk cartridge. FIG. 2 is a perspective view showing a lower surface side of a read-only disk cartridge. FIG. FIG. 6 is a longitudinal sectional view showing another example of the cartridge holder used in the present invention and showing a state in which a disc cartridge is inserted. FIG. 27 is a longitudinal sectional view showing a state where the disk cartridge is inserted in an incorrect direction in the cartridge holder shown in FIG. 26. It is a principal part side view which shows the other example of the lock arm used for the disc loading apparatus concerning this invention. It is a principal part side view which shows the state which the lock | rock shown in FIG. 28 has blocked | prevented the movement of a mechanical chassis.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Mechanical chassis, 4 Cartridge holder, 5 Cartridge moving plate, 12 Disc table, 13 Optical pick-up apparatus, 56, 57 Copying pin, 61 Cam gear, 64 Motor, 74 Slider, 145,146 Cam protrusion shape, 220 Recording / reproduction type disc Cartridge, 221 Playback-only disc cartridge

Claims (1)

A mechanical chassis which is provided on the front side and is provided with a cartridge holder into which a disk cartridge is inserted and held; and which is provided on the lower side of the cartridge holder and which is provided with a reproducing portion of a recording disk housed in the disk cartridge;
A moving operation mechanism having a drive motor disposed on the rear side of the reproduction unit;
A direction in which the center portion is rotatably supported by a support shaft provided in the mechanical chassis and is positioned at a position corresponding to the rear side of the cartridge holder, and a tip portion approaches and separates the cartridge holder from the mechanical chassis. The left and right turning arm portions engaged with the cartridge holder and the rear end sides of the left and right turning arm portions are connected to each other so as to be operated at the rear side of the moving operation mechanism. A U-shaped rotating frame,
A disc player in which a connecting portion of the rotating frame is operated by the moving operation mechanism.

Images