JP3552289B2 - Disc player device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a disc player device that reads out and reproduces information signals recorded on an optical disc.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been proposed a disc player device which reads out an information signal recorded on an optical disc by an optical pickup device, demodulates the information signal into an acoustic signal, and reproduces the signal.
[0003]
Such a disk player device is configured to have a loading mechanism for loading an optical disk into an outer housing and a chucking mechanism for mounting the loaded optical disk on a disk table.
[0004]
The loading mechanism has a disk tray that is operated to move inside and outside the outer housing. The disc tray is positioned and mounted on the optical disc while being moved to the outside of the outer casing. Then, the disc tray is moved into the outer casing while the optical disc is placed, so that the optical disc is carried into the outer casing.
[0005]
The chucking mechanism includes the disk table constituting a disk drive unit, and a rotatable chucking plate disposed opposite to the disk table.
[0006]
The disk drive unit includes the optical pickup device and a spindle motor having the disk table mounted on a drive shaft. The optical pickup device is configured to be movable in the disk drive section in the direction of contacting and separating from the disk table.
[0007]
The disk drive is operable to move in a direction to move the disk table toward and away from the chucking plate. The optical disk carried in by the disk tray is located between the disk table and the chucking plate. When the disk table is moved to the chucking plate side after the optical disk is loaded, the disk table and the chucking plate cooperate to hold and hold the optical disk.
[0008]
When the spindle motor is driven to rotate, the disk table is rotated with the optical disk and the chucking plate. An information signal is read from the optical disk that is being rotated by the optical pickup device.
[0009]
[Problems to be solved by the invention]
By the way, in the above-described disc player device, after the loading of the optical disc by the loading mechanism is completed, chucking of the optical disc is performed. Therefore, in this disc player device, it is difficult to reduce the time from when the optical disc is placed on the disc tray to when the reproduction of the optical disc is executed.
[0010]
Here, a configuration is conceivable in which the disk drive is mounted on the disk tray and the disk drive is moved to the outside of the outer casing. That is, if the disk drive unit is moved to the outside of the outer housing and the optical disk is mounted on the disk drive unit, when the disk drive unit is loaded into the outer housing, The reproduction operation can be executed immediately.
[0011]
However, if the optical disk is to be mounted on the disk drive unit that has been moved to the outside of the outer casing, the disk may not be correctly mounted on the disk drive unit. There is a possibility that the drive unit may be stored in the outer housing.
[0012]
If the disk drive unit is stored in the outer casing in a state where the optical disk is not correctly mounted on the disk drive unit, the optical disk is moved from the disk table when the disk table is rotated. There is a possibility that it may fall off and be damaged or damaged.
[0013]
Therefore, the present invention has been proposed in view of the above-described circumstances, and a disk drive unit is operated to move to the outside of an outer casing so that a recording disk can be quickly attached to and detached from the disk drive unit. It is another object of the present invention to provide a disk player device capable of protecting a recording disk even when the recording disk is not correctly mounted on the disk drive unit.
[0014]
[Means for Solving the Problems]
In order to solve the above-described problems and achieve the above object, a disc player device according to the present invention includes:
A tray portion movably supported over a position to be housed in the outer housing and a position protruding outward from the outer housing; and A disk stabilizer is further mounted on the mounted recording disk, thereby holding the recording disk in cooperation with the disk stabilizer and disposing the recording disk in a disk table for rotating and operating the recording disk. A light-emitting element for emitting light rays, and a light-receiving element for receiving light rays emitted from the light-emitting elements. When the tray unit moves to a position to be housed in the outer casing, the light-receiving element receives light from the light-emitting elements. Detecting means for detecting the presence or absence of the disk stabilizer on the disk table based on whether or not the light beam emitted toward the element is blocked by the disk stabilizer. It is those who are.
Further, the detecting means of the disc player device according to the present invention, when the tray portion is disposed at a position accommodated in the outer casing, a light beam emitted from the light emitting element toward the light receiving element is formed on the disc. The presence / absence of the disk stabilizer on the disk table is detected based on whether or not the disk stabilizer has been shut off.
[0015]
The present invention provides the disc player device with control means for controlling a rotation operation of the disc table, wherein the control means detects that the disc stabilizer is not present on the disc table by the detection means. In such a case, the rotation operation of the disk table is prohibited.
[0016]
Further, according to the present invention, in each of the above-mentioned disc player apparatuses, a display means is provided, and when the detection means detects that the disc stabilizer does not exist on the disc table, the display means is provided with the disc stabilizer. This indicates that the disc table is not mounted.
In addition, the disc player device according to the present invention includes a tray portion movably supported over a position housed in an outer housing and a position protruding outward from the outer housing; The recording disk is disposed so as to be rotatable, and is further mounted on the mounted recording disk, thereby holding the recording disk in cooperation with the disk stabilizer and rotating the recording disk. When the tray unit moves to a position where the tray unit is housed in the outer housing, a contact element disposed in the outer housing may be placed on the disk table depending on whether or not the contact element has contacted the disk stabilizer. Detecting means for detecting the presence or absence of the disk stabilizer.
[0017]
[Action]
A disc player device according to the present invention includes a tray portion movably supported over a position housed in an outer housing and a position protruding outward from the outer housing; A disk that is arranged so as to be rotatable and is further mounted on the mounted recording disk, thereby holding the recording disk in cooperation with the disk stabilizer and rotating the recording disk. A table, a light emitting element disposed in the outer housing for emitting light, and a light receiving element for receiving light emitted from the light emitting element; the tray moves to a position where the tray is housed in the outer housing; When the light beam emitted from the light emitting element toward the light receiving element is blocked by the disc stabilizer, the disc stabilizer on the disc table is determined. Because and detection means for detecting the presence or absence of The can the disc stabilizer to prevent the rotation of the disc table in the non-wearing state.
[0018]
In the disc player device, control means for controlling a rotation operation of the disc table is provided. When the detection means detects that the disc stabilizer is not present on the disc table, the control means performs the operation. When the rotation operation of the disk table is prohibited, the rotation of the disk table when the disk stabilizer is not mounted is prevented.
Further, in each of the above-mentioned disc player devices, display means is provided, and when the detection means detects that the disc stabilizer is not present on the disc table, the disc stabilizer is displayed on the disc table. On the other hand, when the message that the disc stabilizer is not mounted is displayed, the rotation of the disc table when the disc stabilizer is not mounted can be prevented.
[0019]
【Example】
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
[0020]
In this example, as shown in FIG. 1, a disc player device according to the present invention is configured as a device for reproducing an optical disc 201 which is a recording disc having a disc substrate having a diameter of 12 cm or 8 cm. This is an example. The disk substrate of the optical disk 201 is formed of a transparent synthetic resin material such as polycarbonate, and has a chucking hole 202 at the center. On the main surface of the disk substrate, fine irregularities (pits) corresponding to information signals are formed by injection molding, and a reflection layer made of a metal material such as aluminum is formed by a so-called sputtering process. I have.
[0021]
The optical disc 201 is irradiated with a converged laser beam by an optical pickup device described later, and reads an information signal by detecting a change in intensity of a reflected beam of the laser beam.
[0022]
[1] Configuration of Chassis Frame As shown in FIG. 1, the disc player device has a chassis frame 1. The chassis frame 1 has a bottom plate portion 13 and a pair of left and right side plate portions 15 and 14 vertically suspended from both side edges of the bottom plate portion 13 by bending a metal plate material. It is configured.
[0023]
As shown in FIG. 2, the chassis frame 1 is fixedly disposed on a bottom plate 72 of an outer housing of the disc player device.
[0024]
A top plate 5 is attached to the chassis frame 1 so as to extend between upper end portions of the side plates 15 and 14. The top plate 5 is formed in a substantially flat plate shape, and a plurality of screws 20 inserted corresponding to a plurality of screw insertion holes 21 formed on both side portions are provided at upper end portions of the side plate portions 15 and 14. It is attached to the chassis frame 1 by being screwed into the screw holes 16, 17, 18, 19 formed in the chassis frame 1.
[0025]
A circuit board 6 is attached to a lower surface of the top plate 5. The circuit board 6 has a plurality of screw insertion holes 23, and a plurality of screws 22 inserted from below corresponding to the screw insertion holes 23 are screwed into screw holes formed in the top plate 5. As a result, it is attached to the top plate 5.
[0026]
[2] Configuration of Tray Unit A tray unit 7 constituting a loading mechanism is disposed on the bottom plate 13 of the chassis frame 1, that is, between the side plates 15 and 14 and below the circuit board 6. Is established. A disk drive unit 10 described below is arranged on the tray unit 7. A tray cover 11 is attached to the upper surface of the tray 7 so as to cover the disk drive 10. Further, a display panel 70 serving as display means is attached to the front edge of the tray 7 and the tray cover 11 as shown in FIG.
[0027]
The tray cover 11 has a pair of left and right engagement claws 57 provided on the front side of the upper surface of the tray unit 7 engaged with a pair of left and right engagement holes 66 provided on the front side. The rear portion is fixed to the tray portion 7 by a pair of left and right set screws 69, 69, thereby being attached to the tray portion 7.
[0028]
As shown in FIG. 2, the tray unit 7 has a loading position where the display panel unit 70 is accommodated in the outer housing along the entire panel unit 71 of the outer housing, as shown in FIG. Movably supported over an eject position protruding outward from the outer housing.
[0029]
That is, the tray unit 7 includes first and second shafts 8 and 9 attached to the tray unit 7 in the front-rear direction and disposed on the bottom plate 13 of the chassis frame 1. By being movably supported by the thrust bearings 3 and 4, the tray 7 can be moved in the front-rear direction substantially over a distance corresponding to the length of the tray 7 in the front-rear direction.
[0030]
The first shaft 8 has a length substantially twice as long as the length of the tray 7 in the front-rear direction. The first shaft 8 has one end, that is, the front end, located near the front edge of the tray 7, and the other end, that is, the rear end, protrudes toward the rear of the tray 7. The tray 7 is attached to the tray 7 along one side edge thereof.
[0031]
A front end screw hole 45 is provided at the front end of the first shaft 8. A set screw 47 inserted through the through hole 53 formed in the front end face of the tray 7 is screwed into the front end screw hole 45. Further, a side screw hole 46 is provided substantially at the center of the first shaft 8. A set screw 48, which is inserted through a through hole formed on the rear edge side of the tray 7, is screwed into the side screw hole 46.
[0032]
The second shaft 9 has a length substantially equal to the length of the tray 7 in the front-rear direction. The second shaft 9 has a front end located near the front edge of the tray section 7 and a rear end located near the rear edge of the tray section 7. It is attached to this tray section 7 along the side edge.
[0033]
A front end screw hole 49 is provided at the front end of the second shaft 9. A set screw 51 inserted through the through hole 54 formed in the front end face of the tray 7 is screwed into the front end screw hole 49. Further, a side screw hole 50 is provided on the rear end side of the first shaft 8. A set screw 52 inserted through a through hole formed on the rear edge side of the tray 7 is screwed into the side screw hole 50.
[0034]
The first thrust bearing 3 has bearing holes 43, 43 through which the first shaft 8 is inserted and which supports the first shaft 8, at a front end side portion and a rear end side portion.
[0035]
When the tray section 7 is at the loading position, the first thrust bearing 3 is located at a position near the front edge of the tray section 7 and at a position near the rear edge of the tray section 7. The first shaft 8 is supported. When the tray portion 7 is at the eject position, the first thrust bearing 3 includes a portion of the first shaft 8 located near the rear edge of the tray portion 7 and a rear end. The part near the part is supported.
[0036]
The second thrust bearing 4 has a bearing hole 44 for supporting the second shaft 9 through the second shaft 9 at a front end portion.
[0037]
The second thrust bearing 4 supports the second shaft 9 at a position near the front end of the tray 7 when the tray 7 is at the loading position. The second thrust bearing 4 supports a portion of the second shaft 8 located near the rear edge of the tray 7 when the tray 7 is at the eject position. .
[0038]
A through hole 67 is formed in the upper surface of the tray cover 11 so that an optical pickup device 60 and a disk table 61 of the disk drive unit 10 to be described later face upward. A curved wall 68 is provided on the rear side of the upper surface of the tray cover 11 to prevent the optical disk 201 from dropping to the rear.
[0039]
[3] Configuration of First Driving Means The tray 7 is moved by the first driving means. As shown in FIG. 9, the first driving means includes a loading motor 26 which is a driving motor for generating a driving force for driving the loading mechanism, and a driving force for transmitting the driving force generated by the loading motor 26. It has an endless drive belt 29 serving as a transmission mechanism and a plurality of transmission gears 31, 32, 33, 34, 35. The loading motor 26 is driven to rotate by being controlled by a control circuit serving as control means.
[0040]
The loading motor 26 and the plurality of transmission gears 31, 32, 33, 34, 35 are attached to the chassis frame 1 via a damper 79 serving as a buffer member without contacting the chassis frame 1. On the support plate 2 provided.
[0041]
That is, the support plate 2 is located on the bottom plate 13 of the chassis frame 1 and is attached to the bottom plate 13 by a plurality of attachment screws 41. After the plurality of mounting screws 41 are inserted corresponding to the plurality of through holes 42 formed in the support plate 2, they are screwed into screw holes 80 formed in the bottom plate 13 of the chassis frame 1. I have. The damper 79 is interposed between the peripheral surface of each mounting screw 41 and the inner peripheral edge of each through hole 42 of the support plate 2. These dampers 79 are formed in a substantially cylindrical shape from a material having a high shock absorbing property such as butyl rubber. These dampers 79 are externally fitted to the respective mounting screws 41 and fitted into the through holes 42 of the support plate 2, and the outer peripheral surface is supported by the inner peripheral edge of the through holes 42.
[0042]
The loading motor 26 is mounted on the upper surface of the support plate 2 with the drive shaft directed downward. The drive shaft of the loading motor 26 is inserted through a through-hole 81 formed in the support plate 2 and a through-hole 28 formed in the bottom plate 13, and protrudes below the bottom plate 13. A drive pulley 27 is attached to the lower end of the drive shaft. The endless drive belt 29 is wound around the drive pulley 27 between the driven pulley 30 and the driven pulley 30. The driven pulley 30 is rotatably disposed below the bottom plate 13. That is, the driven pulley 30 is attached to a lower end side of a first support shaft 84 rotatably supported by the support plate 2 via the bearing 83. The first support shaft 84 has a lower end protruding below the bottom plate 13 through a through hole 82 formed in the bottom plate 13.
[0043]
The first transmission gear 31 is mounted on the upper end side of the first support shaft 84. The first transmission gear 31 is meshed with a second transmission gear 32 having a larger diameter than the first transmission gear 31. The second transmission gear 32 is rotatably disposed above the support plate 2. The second transmission gear 32 is attached to a substantially central portion of a second support shaft 86 rotatably supported on the support plate 2 via a bearing 85. A third transmission gear 33 having a smaller diameter than the second transmission gear 32 is attached to an upper end side of the second support shaft 86.
[0044]
The third transmission gear 33 is meshed with a fourth transmission gear 34 having a larger diameter than the third transmission gear 33. The fourth transmission gear 34 is located above the support plate 2 so as to be able to move around the second support shaft 86 and to be rotatable.
[0045]
That is, the fourth transmission gear 34 is disposed on a rotation plate 37 that is supported to be rotatable around the second support shaft 86. The turning plate 37 is rotatably attached at its base end to the second support shaft 86, and rotatably supports a third support shaft 88 via a bearing 87 at a distal end portion. . The fourth transmission gear 34 is attached to a substantially central portion of the third support shaft 88. The fourth transmission gear 34 can move around the third transmission gear 33 while being engaged with the third transmission gear 33.
[0046]
A pinion gear 35, which is a transmission gear smaller in diameter than the fourth transmission gear 34, is attached to the upper end side of the third support shaft 88.
[0047]
An upper end portion of the third support shaft 88 protruding above the pinion gear 35 serves as a lock pin 36.
[0048]
As shown in FIGS. 4 to 6, a rack gear 76 with which the pinion gear 35 meshes and a guide slit 78 with which the lock pin 36 fits and engages are formed in the lower surface of the tray portion 7.
[0049]
The rack gear 76 is formed in the front-rear direction along one side edge of the tray section 7. The rack gear 76 has a bent portion 77 in which a front portion is bent in an arc shape in the direction of the teeth of the rack gear 76.
[0050]
The guide slit 78 is formed so as to be parallel to the rack gear 76 and along the rack gear 76 on the side of the teeth of the rack gear 78. The front side portion of the guide slit 78 is bent in an arc centered on the center of curvature of the bent portion 77.
[0051]
When the tray section 7 is at the loading position, the pinion gear 35 meshes with a tip end portion of a bent portion 77 of the rack gear 76 as shown in FIG. At this time, the lock pin 36 is fitted into the front bent portion of the guide slit 78 to prevent the tray 7 from being moved forward by an external force. When the tray 7 is in the loading position, the center of curvature of the bent portion 77 matches the axis of the second support shaft 86 that supports the third transmission gear 33. .
[0052]
At this time, the tip side of the rotating plate 37 presses a pair of detection switches 39 and 40 disposed on the bottom plate 13 of the chassis frame 1. These detection switches 39 and 40 are switches for detecting that the tray section 7 is at the loading position, and are connected to the control circuit.
[0053]
When the loading motor 26 is driven to rotate in one direction, the pinion gear 35 is rotated via the transmission gears. Then, the pinion gear 35 moves along the bent portion 77 while meshing with the bent portion 77 as shown by an arrow G in FIG. That is, the rotation plate 37 is rotated, and the lock pin 36 is moved along the bent portion on the front side of the guide slit 78. The pair of detection switches 39 and 40 are released from the pressing operation by the rotating plate 37.
[0054]
When the pinion gear 35 reaches a linear portion extending in the front-rear direction of the rack gear 76 and is further rotated, the pinion gear 35 moves the tray portion 7 forward as shown by an arrow H in FIG. . At this time, the lock pin 36 is fitted into a linear portion of the guide slit 78 extending in the front-rear direction, thereby preventing the rotation of the rotation plate 37. Then, the tray section 7 is set at the eject position.
[0055]
When the tray section 7 is at the eject position, a detection switch (not shown) is pressed. When the detection switch is pressed, the control circuit stops the loading motor 26.
[0056]
The tray portion 7 at the ejection position as described above causes the first shaft 8 to protrude rearward, and the vicinity of the rear end of the first shaft 8 is supported by the thrust bearing 3. It is supported stably.
[0057]
When the loading motor 26 is driven to rotate in the other direction while the tray section 7 is at the eject position, the pinion gear 35 is rotated, and the tray section 7 is rotated as indicated by an arrow J in FIG. Is moved backward.
[0058]
Then, as shown in FIG. 5, when the front end position of the linear portion of the rack gear 76 reaches a position where it meshes with the pinion gear 35, the display panel portion 70 reaches a position substantially along the front panel portion 71, At this time, the moving speed of the tray unit 7 is reduced by moving the pinion gear 35 into a state of meshing with the bent portion 77.
[0059]
When the pinion gear 35 meshes with the bent portion 77 and starts rotating the rotating plate 37, the tray portion 7 has reached the loading position. Further, when the pinion gear 35 is further rotated, and as shown by an arrow F in FIG. 4, the rotating plate 37 is rotated in the distal direction of the bent portion 77, the distal portion of the rotating plate 37 is rotated. Presses the pair of detection switches 39, 40. When the detection switches 39 and 40 are pressed, the control circuit stops the loading motor 26.
[0060]
[4] Configuration of Disk Drive Unit The disk drive unit 10 having the optical pickup device 60 is disposed on the tray unit 7.
[0061]
As shown in FIGS. 11 to 15, the disk drive unit 10 has a frame 113. The frame 113 is formed in a substantially rectangular casing shape from a synthetic resin material or the like, and has four support holes 132 corresponding to four corners. The dampers 63 are fitted into the support holes 132, respectively. These dampers 63 are formed in a substantially cylindrical shape from a material having good shock absorption such as butyl rubber. Each of the dampers 63 has a support cylinder 64 fitted on the upper end thereof, and setscrews 65 inserted through the support cylinder 64 correspond to four screw bosses 58 provided on the upper surface of the tray section 7. By being screwed in, it is attached to the tray section 7. A suspension spring 59 is interposed between each of the dampers 63 and the tray section 7.
[0062]
That is, the frame 113 of the disk drive unit 10 is so-called floating supported on the tray unit 7 via the four dampers 63 and the four suspension springs 59.
[0063]
The optical pickup device 60 is attached to the frame 113 at the rear side. The optical pickup device 60 includes a laser diode as a light source, a plurality of optical devices for guiding a light beam emitted from the laser diode, a light receiving element as a photodetector, and an objective lens 75 for condensing and emitting the light beam. Are built in the optical block section. The optical pickup device 60 irradiates a light beam emitted through the objective lens 75 onto the main surface of the optical disk 201, and detects the light beam reflected by the optical disk 201 by the light receiving element, thereby detecting the optical disk. The information signal recorded in 201 can be read.
[0064]
The optical pickup device 60 is disposed in a through hole 107 formed in the frame 113. The optical block of the optical pickup device 60 has a bearing 111 on one side. The bearing portion 111 has a bearing hole 134 as shown in FIG. The shaft 108 provided in the through hole 107 is inserted into the bearing hole 134 of the bearing portion 111. The shaft 108 is fixed to the frame 113 by fixing screws 109 and 110 at the edges of the through hole 107 at both ends, and is disposed in the front-rear direction.
[0065]
As shown in FIG. 14, the optical block portion is attached to the edge of the through hole 107 with the other side portion sandwiched between the adjusting screw 133 and the pressing spring 112. . The adjusting screw 133 and the pressing spring 112 are attached to the edge of the through hole 107. The optical block unit is rotated around the shaft 108 as shown by arrows L and M in FIG. The inclination is adjusted with respect to. The pressing spring 112 presses and supports the optical block unit against the adjusting screw 133.
[0066]
The optical pickup device 60 is fixed in the axial direction of the shaft 108, is fixed to the tray unit 7, and is disposed. 61. The disk table 61 holds and rotates the optical disk 201, is located in front of the optical pickup device 60, and is supported so as to be movable in the direction of approaching and separating from the optical pickup device 60. I have.
[0067]
As shown in FIGS. 13 and 15, the disc table 61 has a substantially disk-shaped table portion, and has a substantially truncated conical centering cap 74 at the center of the upper surface of the table portion. I have. The disk table 61 has a spindle shaft 73 that is suspended below the center of the table. The centering cap 74 is configured to be able to protrude and retract from the table along the spindle shaft 73, and is elastically urged upward. The centering cap 74 fits into the chucking hole 202 when the central portion of the optical disc 201 is placed on the table, and performs centering of the optical disc 201.
[0068]
The spindle shaft 73 is rotatably supported by a support block 104 provided in the through hole 107. The support block 104 is integrally formed of a conductive synthetic resin material or a conductive material such as a metal, and encloses a metal bearing 131 supporting the spindle shaft 73 by so-called insert molding or press fitting. Have. Therefore, the disk table 61 is electrically connected to the support block 104. By grounding the support block 104, the disk table 61 is always at the ground potential without accumulating static electricity.
[0069]
The support block 104 has a bearing portion on one side supported by the shaft 108, and moves along the shaft 108 in the direction of contact with and away from the optical pickup device 60 as shown by arrows D and E in FIG. The moving operation can be performed in a certain forward and backward direction. The bearing portion has a bearing hole through which the shaft 108 is inserted. A thrust bearing 135 is fitted in this bearing hole. A support roller 105 is rotatably mounted on the other side of the support block 104. The support roller 105 is placed and supported on a support flange 106 formed at an edge of the through hole 107. The support roller 105 is in contact with the support flange 106 to support the support block 104 movably. A rotor 116 constituting a spindle motor is attached to the lower end of the spindle shaft 73. The rotor 116 has a multi-pole magnetized magnet. The spindle motor includes the rotor 116 and a flat coil disposed on an electronic board 115 attached to the lower end of the support block 104. By supplying a predetermined current to the flat coil, the rotor 116 is rotated.
[0070]
The drive current of the spindle motor is supplied to the electronic board 115 on which the flat coil constituting the spindle motor is provided via the flexible board 114. The flexible board 114 is drawn out of the disk drive unit 10. The upper surface of the tray 7 has a groove-like shape into which the flexible substrate 114 enters, while holding the flexible substrate 114 at a predetermined position and preventing the flexible substrate 114 from being bent excessively sharply. A recess 117 is formed.
[0071]
Then, the support block 104 that supports the disk table 61 is moved by a second driving unit. The second drive means includes a sled motor 95 attached to the frame 113, and a plurality of transmission gears for transmitting the driving force generated by the sled motor 95 to the support block 104. The thread motor 95 is controlled by the control circuit to rotate. That is, the drive gear 96 is attached to the drive shaft of the thread motor 95. The drive gear 96 meshes with a first transmission gear 97 having a larger diameter than the drive gear 96 rotatably disposed on the frame 113. A second transmission gear 98 having a diameter smaller than that of the first transmission gear 97 is coaxially attached to the first transmission gear 97. The second transmission gear 98 meshes with a third transmission gear 99 which is rotatably disposed on the frame 113 and has a larger diameter than the second transmission gear 98. A fourth transmission gear 100 having a diameter smaller than that of the third transmission gear 99 is attached to the third transmission gear 99 coaxially. The fourth transmission gear 100 meshes with a fifth transmission gear 101 that is rotatably disposed on the frame 113 and has a larger diameter than the fourth transmission gear 100. A pinion gear 102, which is a transmission gear having a smaller diameter than the fifth transmission gear 101, is coaxially attached to the fifth transmission gear 101.
[0072]
The pinion gear 102 meshes with a rack gear 103 formed on one side of the support block 104. The rack gear 103 is formed parallel to the shaft 108. Therefore, when the thread motor 95 is driven to rotate, the support block 104 is moved along the shaft 108. As shown in FIG. 16, on one side of the support block 104, a rack member 119 for forming a so-called double rack is provided.
[0073]
The rack member 119 is formed in a substantially flat plate shape, and has a rack gear portion 129 on one side edge. The rack member 119 has a pair of arch portions 122 and 121 on the lower surface of the flat portion. The rack member 119 is attached to the shaft 108 by passing the shaft 108 through a through hole formed by the flat plate portion and each of the arch portions 122 and 121. The rack member 119 has through holes 123 and 120 in a flat plate portion.
[0074]
A concave portion 128 is provided in one side of the support block 104 so that the arch portions 122 and 121 of the rack member 119 are fitted. In the recess, there are provided projections 125 and 124 that are fitted into the through holes 123 and 120 of the rack member 119. The projections 125 and 124 are provided with bearing holes 126 and 127 into which the thrust bearing 135 is fitted and into which the shaft 108 is inserted.
[0075]
The rack member 119 is disposed on one side of the support block 104, and the shaft 108 is inserted into a through hole formed by the bearing holes 126 and 127 of the support block 104 and the arch portions 122 and 121 of the rack member 119. When the rack gear 103 is inserted, the rack gear 103 and the rack gear portion 129 are in a state of being overlapped in parallel with each other as shown in FIG.
[0076]
A compression coil spring 130 is interposed between one protrusion 124 of the support block 104 and the inner edge of one through hole 120 of the rack member 119. The compression coil spring 130 is disposed coaxially with the shaft 108, that is, in a state where the shaft 108 is inserted. The compression coil spring 130 urges the rack member 119 against the support block 104 in one direction along the shaft 108 as shown by an arrow P in FIG.
[0077]
The pinion gear 102 of the second driving means meshes with both the rack gear 103 of the support block 104 and the rack gear portion 129 of the rack member 119. Here, since the rack member 119 is urged in one direction with respect to the support block 104, backlash may occur between the pinion gear 102, the rack gear 103, and the rack gear portion 129. Absent. As shown in FIG. 7, the disk table 61 has the center portion of the optical disk 201 mounted thereon, and the disk stabilizer 12 is further mounted on the mounted optical disk 201. It is held in cooperation with the stabilizer 12.
[0078]
As shown in FIG. 10, the disk stabilizer 12 has a cylindrical portion 91 and a disk-shaped portion 92 attached to the lower end of the cylindrical portion 91, and is made of a material having a sufficient specific gravity such as metal. It consists of. The cylindrical portion 91 is provided with a fitting hole 89 into which the upper end of the spindle shaft 73 is inserted. The lower portion of the fitting hole 89 is formed as a tapered enlarged portion 90 for avoiding contact with the centering cap 74. To the lower surface of the disc-shaped portion 92, annular friction sheets 93 and 94 for causing friction with the optical disc 201 are attached.
[0079]
When the spindle motor is driven to rotate while holding the optical disk 201 in cooperation with the disk stabilizer 12, the disk table 61 rotates the optical disk 201.
[0080]
As shown in FIG. 11, when the disk table 61 is located at the position closest to the optical pickup device 60, the innermost peripheral portion of the optical disk 201 being held is moved to the objective lens 75 of the optical pickup device 60. Make them face each other.
[0081]
As shown in FIG. 12, when the disc table 61 is located at the most distant position from the optical pickup device 60, the outermost peripheral portion of the optical disc 201 is held by the objective lens 75 of the optical pickup device 60. To face.
[0082]
A thread-in switch and a thread-out switch (not shown) are attached to the frame 113.
[0083]
The thread-in switch is pressed by the support block 104 when the disk table 61 is at a position closest to the optical pickup device. This thread-in switch is connected to the control circuit. When the second drive means moves the support block 104 in a direction approaching the optical pickup device 60 and presses the thread-in switch, the control circuit operates the thread motor 95. To stop.
[0084]
The thread-out switch is pressed by the support block 104 when the disc table 61 is at a position farthest from the optical pickup device. This thread-in switch is connected to the control circuit. When the second drive means moves the support block 104 in a direction away from the optical pickup device 60 by the second drive means, when the thread-out switch is pressed, the thread motor 95 To stop.
[0085]
The optical pickup device 60 and the disk table 61 face the upper side of the tray cover 11 through the through holes 67 formed on the upper surface of the tray cover 11.
[0086]
[5] Configuration of the detection means of the disk stabilizer The disk stabilizer on the disk table 61 is provided in the outer housing when the tray unit 7 is moved toward the position to be stored in the outer housing. Detection means for detecting the presence / absence of 12 is provided. As shown in FIGS. 2, 7 and 8, the detecting means includes a light emitting element 24 mounted on the lower surface of the circuit board 6 and a light emitting element 24 mounted on the lower surface of the circuit board 6. The light receiving element 25 receives the light beam K.
[0087]
As shown in FIG. 2, the light beam K from the light emitting element 24 to the light receiving element 25 is at the position where the tray 7 is at the loading position and the disk table 61 is closest to the optical pickup device 60. When the disk stabilizer 12 is mounted on the disk table 61, the disk stabilizer 12 shuts off the disk.
[0088]
When the disk stabilizer 12 is not placed on the disk table 61, the tray 7 is at the loading position and the disk table 61 is at the position closest to the optical pickup device 60. Also, the light beam K emitted from the light emitting element 24 reaches the light receiving element 25 without being blocked by the spindle shaft 73 or the like.
[0089]
That is, the light receiving element 25 receives the light beam K in synchronization with the timing when the tray section 7 reaches the loading position and the disc table 61 is positioned closest to the optical pickup device 60. The presence or absence of the disk stabilizer 12 on the disk table 61 can be determined by detecting whether or not the disk stabilizer 12 is operating.
[0090]
[6] Operation of Disc Player Device In the disc player device according to the present invention configured as described above, the control circuit includes the first and second driving means, the rotating operation of the disc table 61, and the display. The panel 70 is controlled.
[0091]
The control means, as indicated by an arrow A in FIG. 3, when the first drive means moves the tray section 7 to an eject position protruding from the outer housing, is indicated by an arrow B in FIG. As described above, the disk table 61 is moved farthest from the outer casing within a range where the tray unit 7 can be moved by the second drive means, that is, the disk table 61 is moved farthest from the optical pickup device 60. Move to the specified position.
[0092]
Therefore, in this disc player apparatus, the disc table 61 is replaced with the disc table 61 while minimizing the amount of protrusion of the tray section 7 from the front panel section 71 as indicated by an arrow N in FIG. The operation can be sufficiently moved forward so that the entire surface of the optical disk 201 held thereon is located in front of the front panel portion 71.
[0093]
When the first drive unit moves the tray unit 7 to a loading position stored in the outer casing as shown by an arrow C in FIG. 2, the control circuit uses an arrow in FIG. As shown by D, the disk drive 61 is moved by the second drive means to a position closest to the optical pickup device 60 within a range where the movement operation with respect to the tray section 7 is possible.
[0094]
Therefore, in this disc player device, after the optical disc 201 is placed on the disc table 61 and the tray section 7 is moved to the loading position, the reproducing operation on the optical disc 201 can be started immediately. Has become. This is because the optical disc 201 has the catalog information (TOC) recorded at the innermost peripheral position, and is configured to start reproduction from the catalog information.
[0095]
When the tray unit 7 is at the loading position, the control circuit, when the detecting means detects that the disk stabilizer 12 is not present on the disk table 61, the disk table The rotation operation of 61 is prohibited.
[0096]
Further, when the tray section 7 is set to the loading position, and when the detecting means detects that the disk stabilizer 12 is not present on the disk table 61, the display panel 70 displays the control circuit. The fact that the disk stabilizer 12 is not mounted on the disk table 61 is displayed.
[0097]
Therefore, in this disc player apparatus, the disc table 61 is not rotated without the disc stabilizer 12 being mounted on the optical disc 201 placed on the disc table 61, and the Accidents such as dropping from the disk table 61 can be prevented, and unnecessary power consumption can be suppressed.
[0098]
Further, since the display panel 70 indicates that the disk stabilizer 12 is not mounted on the disk table 61, the user of the disk player apparatus may determine that the disk table 61 is not rotated. You can know.
[0099]
The optical disk 201 is placed on the disk table 61, the disk stabilizer 12 is mounted on the optical disk 201, the tray 7 is set at the loading position, and the disk table 61 is moved to the optical pickup device 60. When the position is set to the closest position, the reproducing operation for the optical disk 201 becomes possible. That is, the optical pickup device 60 can sequentially read information signals along the recording tracks formed on the optical disc 201 from the inner peripheral side of the optical disc 201.
[0100]
At this time, as shown by an arrow E in FIG. 2, the disc table 61 is moved in a direction away from the optical pickup device 60 in accordance with the progress of reading the information signal by the optical pickup device 60. . In addition, as shown by arrows E and D in FIG. 2, the disc table 61 responds to selection of a position on the optical disc 201 where the optical pickup device 60 reads an information signal, that is, a so-called track jump operation. The moving operation is performed in the direction of approaching and separating from the optical pickup device 60.
[0101]
Further, the control circuit is configured to move the disk table 61 with respect to the tray unit 7 for a predetermined time or more when the tray unit 7 is moved and the disk table 61 is moved. In this case, the moving operation direction of the disk table 61 is reversed.
[0102]
That is, when the reproducing operation on the optical disk 201 is not being performed, the control circuit starts the control operation at step st1 as shown in a flowchart (flow chart) of FIG. It is determined whether or not the moving operation in the direction approaching the optical pickup device 60 (thread feed (inward)) is performed. If the operation of moving the disk table 61 in the direction approaching the optical pickup device 60 has been executed, the process proceeds to step st3, and if not, the process proceeds to step st11.
[0103]
In step st3, it is determined whether or not the thread-in switch has been pressed. If the thread-in switch has been pressed, the process proceeds to step st4, and if not, the process proceeds to step st7.
[0104]
In step st4, the thread motor 95 is stopped, and the process proceeds to step st5.
[0105]
In step st5, it is determined whether or not the tray section 7 is at a position other than the loading position (loading is open). If the tray unit 7 is at a position other than the loading position, the process proceeds to step st6. If the tray unit 7 is at the loading position, the process proceeds to step st9.
[0106]
In step st6, the disc table 61 is moved in a direction away from the optical pickup device 60 (thread feed (outward direction)) until the thread-out switch is pressed, and the time limit is set. The timer for counting is reset, and the process returns to step st2.
[0107]
The timer is in a reset state at the beginning of the operation, that is, when the thread motor 95 is stopped, and starts counting when the driving operation of the thread motor 95 is started. The time limit counted by the timer is, for example, one to one, which is the time required to move the disk table 61 from the position closest to the optical pickup device 60 to the position farthest from the optical pickup device 60. This is a time obtained by adding a time of about 2 seconds.
[0108]
In step st9, the timer is reset, and the process proceeds to step st10 and returns.
[0109]
When the tray section 7 is at a position other than the loading position such as the eject position by the operation from the above-described step st1 to step st6, the disk table 61 is moved in a direction approaching the optical pickup device 60. In this case, the moving operation is performed once to a position closest to the optical pickup device 60, and then the moving operation is performed to a position farthest from the optical pickup device 60.
[0110]
Then, in step st7, it is determined whether or not the time limit counted by the timer has elapsed. If the time limit has elapsed, the process proceeds to step st8. If the time limit has not elapsed, the process returns to step st3.
[0111]
In step st8, the tray unit 7 is moved toward the eject position (loading is opened), and the process proceeds to step st10 and returns.
[0112]
By the operation from step st7 to step st8, when the operation of moving the disk table 61 in the direction approaching the optical pickup device 60 is performed for more than the time limit, the thread-in switch is not pressed. Then, the tray unit 7 is operated to move to the eject position.
[0113]
In step st11, it is determined whether or not an operation of moving the disk table 61 in a direction away from the optical pickup device 60 (thread feeding (outward direction)) is being performed. If the operation of moving the disk table 61 in the direction away from the optical pickup device 60 has been executed, the process proceeds to step st12, and if not, the process proceeds to step st10 and returns.
[0114]
In step st12, it is determined whether or not the thread-out switch has been pressed. If the thread-out switch has been pressed, the process proceeds to step st13, and if not, the process proceeds to step st15.
[0115]
In step st13, the thread motor 95 is stopped, and the process proceeds to step st14.
[0116]
In step st14, the timer is reset, and the process proceeds to step st10 and returns.
[0117]
Then, in step st15, it is determined whether or not the time limit counted by the timer has elapsed. If the time limit has elapsed, the process proceeds to step st16. If the time limit has not elapsed, the process returns to step st12.
[0118]
In step st16, a moving operation of the disc table 61 in a direction approaching the optical pickup device 60 (thread feed (inward)) is performed for a predetermined time, and the process proceeds to step st17.
[0119]
In step st17, the operation of moving the disk table 61 in a direction away from the optical pickup device 60 (thread feed (outward direction)) is performed until the thread out switch is pressed, and the process returns to step st12. .
[0120]
By the operation from step st15 to step st17, when the operation of moving the disk table 61 in the direction away from the optical pickup device 60 is performed over the time limit, the thread-out switch is not pressed. For example, when a finger or the like is sandwiched between the disc table 61 and the edge of the through hole 67 of the tray cover 11, the moving direction of the disc table 61 is temporarily reversed, Is moved in a direction approaching the optical pickup device 60, and is again moved in a direction away from the optical pickup device 60. This operation is repeated until the thread-out switch is pressed.
[0121]
In the disc player device according to the present invention, the detecting means for detecting the presence or absence of the disc stabilizer 12 on the disc table 61 is not limited to the above-described optical sensor, but may be a contact type using a pressing switch. May be used as the sensor.
[0122]
【The invention's effect】
As described above, in the disk player device according to the present invention, the detecting means disposed in the outer housing includes a light emitting element that emits light and a light receiving element that receives light emitted from the light emitting element. When the tray unit moves to a position where the tray unit is housed in the outer housing, the light emitted from the light emitting element toward the light receiving element is blocked on the disk table by whether or not the light is blocked by the disk stabilizer. Detects the presence of a disk stabilizer.
[0123]
Therefore, in this disk player device, it is possible to prevent the disk table from rotating when the disk stabilizer is not mounted on the disk table.
[0124]
In the disc player device, control means for controlling a rotation operation of the disc table is provided. When the detection means detects that the disc stabilizer is not present on the disc table, the control means performs the operation. When the rotation operation of the disk table is prohibited, the rotation of the disk table when the disk stabilizer is not mounted is prevented. Further, in each of the above-mentioned disc player devices, display means is provided, and when the detection means detects that the disc stabilizer is not present on the disc table, the disc stabilizer is displayed on the disc table. On the other hand, when the message that the disc stabilizer is not mounted is displayed, the rotation of the disc table when the disc stabilizer is not mounted can be prevented.
[0125]
That is, according to the present invention, the disk drive is moved to the outer side of the outer casing so that the recording disk can be quickly attached to and detached from the disk drive, and the recording disk can be mounted to the disk drive. It is possible to provide a disk player device capable of protecting the recording disk when the recording is not accurately performed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a configuration of a disc player device according to the present invention.
FIG. 2 is a plan view showing a configuration of a tray portion of the disc player device, with a part thereof cut away.
FIG. 3 is a plan view, partially broken away, showing a state in which the tray section has been moved to the outside of an outer housing in the disc player device.
FIG. 4 is a partially cutaway plan view showing a configuration of a loading mechanism for moving the tray section in the disc player device.
FIG. 5 is a plan view, partially broken away, showing a state in which the loading mechanism is moving the tray in the disc player device.
FIG. 6 is a partially cutaway plan view showing a state in which the loading mechanism has moved the tray portion to the outside of the outer casing in the disc player device.
FIG. 7 is a front view showing a state where an optical disk and a disk stabilizer are mounted in the disk player device.
FIG. 8 is a front view showing a state where the optical disk and the disk stabilizer are not mounted in the disk player device.
FIG. 9 is a longitudinal sectional view showing a configuration for supporting a loading motor and a reduction gear of a loading mechanism in the disc player device.
FIG. 10 is a longitudinal sectional view showing a shape of a disk stabilizer used in the disk player device.
FIG. 11 is a plan view showing a configuration of a disk drive unit of the disk player device.
FIG. 12 is a plan view showing a state where the disk table is separated from the optical pickup device in the disk drive section.
FIG. 13 is a side view showing the structure of the disk drive unit, with a part thereof broken away.
FIG. 14 is a front view showing a configuration of the disk drive unit.
FIG. 15 is a longitudinal sectional view showing a configuration of the disk drive unit.
FIG. 16 is an exploded perspective view showing a main part of a configuration for supporting an optical pickup device in the disk drive unit.
FIG. 17 is a flowchart illustrating the operation of the disc player device.
[Explanation of symbols]
Reference Signs List 3 thrust bearing 7 tray section 8 first shaft 11 tray cover 12 disk stabilizer 24 light emitting element 25 light receiving element 26 loading motor 43 bearing hole 60 optical pickup device 61 disk table 70 display panel 71 front panel 72 bottom plate 73 spindle shaft 95 thread Motor 104 Support block 201 Optical disk

Claims (5)

A tray portion movably supported over a position housed in the outer housing and a position protruding outward from the outer housing,
A disk stabilizer is mounted on the tray section so as to be rotatable, and a disk stabilizer is further mounted on the mounted recording disk, thereby holding the recording disk in cooperation with the disk stabilizer. A disk table for rotating the
Becomes the emission light rays from the light emitting element and the light-emitting device which is emitting light rays disposed outer housing and a light receiving element for receiving, when the tray unit is moved to a position to be housed in the outer casing, A disc player device comprising: detecting means for detecting the presence or absence of the disc stabilizer on the disc table based on whether or not a light beam emitted from the light emitting element toward the light receiving element is blocked by the disc stabilizer. The detecting means is configured such that, when the tray portion is disposed at a position to be housed in the outer casing, the light emitted from the light emitting element toward the light receiving element is blocked by the disc stabilizer to determine whether the light is blocked. 2. The disc player according to claim 1, wherein the presence or absence of the disc stabilizer on a disc table is detected. Having control means for controlling the rotation operation of the disk table,
3. The disk player device according to claim 2, wherein said control means prohibits a rotation operation of said disk table when said detection means detects that said disk stabilizer is not present on said disk table. Having display means,
The said display means, when the detection means detects that the disk stabilizer is not present on the disk table, displays that the disk stabilizer is not mounted on the disk table. Item 3. The disc player device according to item 3. A tray portion movably supported over a position housed in the outer housing and a position protruding outward from the outer housing,
A disk stabilizer is mounted on the tray section so as to be rotatable, and a disk stabilizer is further mounted on the mounted recording disk, thereby holding the recording disk in cooperation with the disk stabilizer. A disk table for rotating the
When the tray section moves to a position to be stored in the outer housing, the presence or absence of the disk stabilizer on the disk table depends on whether a contact element disposed in the outer housing has contacted the disk stabilizer. A disc player device comprising: a detecting unit for detecting a disc.

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