JP2004158194A - Disk loading method and apparatus - Google Patents

Abstract

A highly reliable disk loading device capable of realizing a smaller and thinner device, stably and reliably holding an inserted disk, and preventing damage to a recording surface of the disk. Getting the equipment.
A turntable driven by a spindle motor, a pickup for reading information on a mounted disk, and a pickup in a diameter direction of the disk are provided inside a frame formed by a bottom cover and a top cover. And a traverse unit for moving the disk. The traverse unit is configured to rotate by a predetermined angle around the outer edge of the mounted disk, and the turntable rotates the disk by rotating the traverse unit. A disk loading method for moving between a disk standby state and a clamping state, wherein the pickup is arranged in an outer peripheral direction of the disk when the traverse unit is in a disk standby state. Method.
[Selection diagram] Fig. 1

Description

  The present invention relates to a disk loading device having a function of performing recording and reproduction on a disk-shaped recording medium such as a CD (hereinafter simply referred to as a disk).

7 and 8 are side sectional views showing a conventional disk loading device. FIG. 7 shows a state where the disk 1 is inserted into a conventional disk loading device, and FIG. 8 shows a state where the disk 1 is clamped. As shown in FIG. 7, in the conventional disk loading device, the disk 1 inserted into the device is drawn into the device by the rotation of the roller 18. The roller 18 is provided with a coil spring 21 as urging means so as to press the lower surface of the inserted disk 1 into pressure. The disk 1 drawn into the apparatus is placed on a turntable 19 and rotatably clamped by a clamper 16. The turntable 19 is directly connected to the rotation shaft of the spindle motor 30, and rotates the disc 1 held at a desired speed.
The clamper 16 holding the disc 1 is held by a clamper holder 17, and the clamper holder 17 is configured to rotate a predetermined angle about a rotation center axis 20. When the disc 1 is inserted into or ejected from the apparatus, the clamper 16 is lifted by the rotation of the clamper holder 17 so that the clamped state of the disc 1 is released. When the disc 1 is ejected, the roller 18 is pressed against the lower surface of the disc 1 and moves the disc 1 in the ejection direction.
In the conventional disk loading device configured as described above, when the disk 1 is inserted, the clamper holder 17 rotates around the rotation center shaft 20 to lift the clamper 16 and the inserted disk 1 is And is disposed above the turntable 19. When the disc 1 is placed above the turntable 19, the disc 1 is sandwiched between the clamper holder 17 and the rollers 18, and is integrally lowered on the turntable 19. The disc 1 placed on the turntable 19 is clamped by the clamper 16 lowered by the clamper holder 17. After the disc 1 is clamped on the turntable 19, the roller 18 and the clamper holder 17 move in a direction away from the disc 1, and are each arranged with a gap from the disc 1.
Further, a disc loading device in which a disc is placed on a disc tray and mounted is disclosed (for example, Patent Document 1). In the conventional disk loading apparatus disclosed in Patent Document 1, when a disk placed on a disk tray is inserted into the apparatus, the disk is prevented from coming into contact with other members. In the loading state, the clamper is separated from the turntable by the magnetic attraction means, and in the loading state, the clamper is attracted to the turntable by another magnetic attraction means, and the disc on the turntable is held by the centering mechanism provided on the clamper. I was With such a configuration, in the conventional disk loading device, a relatively large gap is secured between the clamper and the turntable in the unloading state to prevent contact with the disk.
JP-A-11-238278

  In the conventional disk loading device, a large space is provided between the turntable 19 and the clamper 16 so that the disk 1 never contacts the clamper 16 and the turntable 19 when the disk 1 is pulled in or ejected. (See FIG. 7). In this type of disk loading device, miniaturization and thinning of the device are issues to be achieved in this field. However, in the conventional disk loading device, it is necessary to form a large space between the turntable 19 and the clamper 16. Therefore, this is a big problem for miniaturization and thinning of the device. Also, providing a centering mechanism or the like in a clamper portion using a plurality of magnetic attraction means has been an obstacle to miniaturization and thinning of the apparatus.

  The present invention has been made in order to solve the above-described problems, and has realized a reduction in size and thickness of an apparatus, and can stably and reliably hold an inserted disk, and can record a disk. It is an object of the present invention to obtain a highly reliable disk loading device capable of preventing surface damage.

The disk loading device according to the present invention is configured such that a disk transport means for drawing and ejecting an inserted disk into and from the device, and is configured to be movable in a direction orthogonal to a disk insertion direction, and Clamper means configured to deviate from the disc insertion path when contacted, turntable means on which the inserted disc is placed and driven by a spindle motor, information reading means for reading information on the inserted disc, Traverse means configured to move the information reading means in the diameter direction of the disk, and to move the turntable means and press against the clamper means. The disk loading device of the present invention configured as described above can realize a reduction in size and thickness.
In a disc loading device according to another aspect of the present invention, the traverse unit is a traverse unit, and the traverse unit is rotated around a rotation shaft arranged near an outer edge of a mounted disc, and the turntable unit is set to a reproduction standby position. It is configured to move between the playback position. The disk loading device of the present invention configured as described above can realize a reduction in size and thickness, and can stably and reliably hold the inserted disk.
According to another aspect of the present invention, there is provided a disk loading apparatus including a roller for rotating the disk conveying unit while pressing against the inserted disk to perform a drawing operation and an discharging operation of the disk, and the disk is disposed at a reproduction position. Then, the turntable means is lifted in the direction of the clamper means to clamp the disk. The disk loading device of the present invention configured as described above can realize a reduction in size and thickness, and can prevent damage to the recording surface of the disk.

  As described above, the present invention has the following effects as apparent from the detailed description of the embodiments. According to the present invention, the clamper portion is of a fixed type that can move freely, the turntable facing the clamper portion is configured to move up and down by rotating the traverse unit by a predetermined angle, and the clamper portion is moved along the disk transport path. Therefore, it is possible to obtain a disk loading device that has been reduced in size and thickness by effectively utilizing the internal space of the device. In the disc loading device of the present invention, the clamper is guided so as to be surely arranged at the predetermined position, so that the inserted disc can be stably and reliably held at the predetermined position, and the recording surface of the disc Damage can be prevented.

Hereinafter, a preferred embodiment of a disc loading device according to the present invention will be described with reference to the accompanying drawings.
FIGS. 1 to 3 are side sectional views showing a main part of a disk loading device according to a first embodiment of the present invention. FIG. 1 is a disk standby state, FIG. 2 is a state where a disk is being inserted, FIG. 3 shows a state where the disk is clamped. In the disc loading device of the first embodiment, a reproducing mechanism for reproducing the mounted disc 1 is provided inside a frame 40 including the bottom cover 9 and the top cover 13. A clamper cover 14 is attached to the top cover 13, and a clamper section 50 that holds the disk holder 7 that can move up and down is disposed inside the clamper cover 14. The turntable 4 driven by the spindle motor 8 is disposed inside the frame 40 at a position facing the disk holder 7. A pickup 10 for reading information on the mounted disc 1 and a traverse unit 5 for moving the pickup 10 in the diameter direction of the disc 1 are provided inside the frame 40. The traverse unit 5 is held by a traverse chassis 6, and is configured to rotate a predetermined angle about a shaft 6a. By the rotation of the traverse unit 5, the turntable 4 shifts between the disk standby state of the disk 1 and the clamping state.
As shown in FIG. 1, in the disc loading device of the first embodiment, an opening 17 is formed on the left side of a frame 40 composed of a bottom cover 9 and a top cover 13, and the opening 17 has a disc feeder. 16 are provided. The disk feeder 16 has a rotating roller 2 and is configured to be rotatable about a shaft 16a.

  Next, the operation of the disk loading device of the first embodiment configured as described above will be described. 1 shows a disk standby state before the disk 1 is pulled into the apparatus, FIG. 2 shows a state in which the disk 1 is being drawn, and FIG. 3 shows a state in which the disk 1 is clamped. . When the disk 1 is pulled in from the disk standby state shown in FIG. 1 and its leading end 1a reaches a predetermined position (the position indicated by the symbol S in FIG. 2), the roller 2 starts rotating and the disk feeder 16 rotates. It moves (rotates clockwise in FIG. 1 by a predetermined angle) and presses against the disc 1. Due to the rotation of the rollers 2, the disk 1 moves toward the turntable 4 while being pressed against the pad 3, and is sent to a position (reproduction position) where the center of the disk 1 and the center of the turntable 4 substantially match.

  When the disk 1 reaches the predetermined position as described above, an electric signal is input to the drive mechanism, and the traverse unit 5 rotates about the shaft 6a of the traverse chassis 6 by the drive mechanism. As a result, the turntable 4 moves in the direction of pressing the disk 1 and is urged toward the disk holder 7. The operation of the drive mechanism can be started by mechanically interlocking the lever and the cam by inserting the disk 1 instead of the electric signal as described above.

  As shown in FIGS. 1 and 2, when the traverse unit 5 is at the lower position, that is, when the disk is in the standby state and the disk is being withdrawn, the spindle motor 8 is arranged so as not to contact the bottom cover 9, 5 is formed thin so as to be able to move up and down a predetermined distance. Also, after the disk 1 is reproduced, the spindle motor 8 is arranged so as not to contact the bottom cover 9 even when the traverse unit 5 rotates about the shaft 6a of the traverse chassis 6 and descends away from the disk 1. ing.

  In the first embodiment, when the turntable 4 is in the lower position, that is, in the disk standby state and in the state of drawing in the disk, the pickup 10 is moved in the outer circumferential direction of the disk 1 so as not to contact the bottom cover 9, and It is arranged near. Further, when the disc 1 is ejected, the pickup 10 is moved in the outer peripheral direction of the disc 1 before the traverse unit 5 descends to release the pinching of the disc 1 so as not to come into contact with the bottom cover 9. Have been.

  As described above, in the first embodiment, the clamper unit 50 is configured not to rotate, and the traverse unit 5 holding the turntable 4 is rotated around the shaft 6a of the traverse chassis 6 to move up and down. Make up. When the turntable 4 is at the lower position, the pickup 10 is moved in the disk outer peripheral direction. Therefore, in the first embodiment, the pickup 10 and the traverse unit 5 are formed in a conventional shape using a disc loading apparatus. Can be made thinner. That is, it is not necessary to reduce the thickness of the pickup 10 and the traverse unit 5 in order to reduce the thickness of the disc loading device. Further, in the first embodiment, since the disc tray for mounting the disc 1 is not used when the disc 1 is inserted, the disc holding mechanism can be made thinner, and the disc loading device can be further thinned. Becomes possible.

  Next, a clamper unit in the disk loading device according to the first embodiment of the present invention will be described. FIGS. 4 and 5 are cross-sectional views illustrating a main part of the clamper unit 50 in the disc loading device according to the first embodiment. FIG. 4 shows a state where the disk 1 is being pulled in, and FIG. 5 shows a state where the disk 1 is clamped. In FIG. 4, the clamper 50 according to the first embodiment includes a disk holder 7, a magnet 11, and a magnet yoke 12. The magnet 11 and the magnet yoke 12 are formed in a ring shape, and the magnet 11 is fixed in the magnet yoke 12 concentrically with the disk holder 7 with an adhesive or the like.

  In the first embodiment, the example in which the magnet 11 and the magnet yoke 12 are formed in a ring shape has been described. However, the present invention is not limited to such a configuration, and the magnet and the magnet yoke may have other shapes, for example, A plurality of magnet pieces may be arranged radially around the disk holder 7, and with such a configuration, the weight of the clamper unit 50 can be reduced.

  Next, a clamper holding mechanism for holding the clamper unit 50 in the disc loading device of the first embodiment will be described with reference to FIG. The disk holder 7 to which the magnet yoke 12 and the magnet 11 are attached has a certain clearance up, down, left and right by a clamper cover 14 which is a clamper holding member, and is held rotatably and vertically movable. The clamper cover 14 is fixed to the top cover 13, and when the clamper portion 50 is pushed up against the disk holder 7 by inserting the disk 1, the guide 14 a fitted into the center hole 12 a of the magnet yoke 12 is clamped. The cover 14 has. The guide 14 a is provided so as to protrude in a direction facing the clamper unit 50, and is arranged such that the center position of the guide 14 a substantially matches the center position of the turntable 4.

Usually, the clamper unit 50 is in a state of being lifted by being attracted to the clamper cover 14 by the magnet 11. However, there is a case where the clamper unit 50 is lowered toward the turntable 4 due to the weight of the clamper unit 50 due to an impact during transportation. In this case, when the disk 1 is pulled in, the tip 1a, which is the disk end surface of the disk 1, comes into contact with the tapered portion 7a of the disk holder 7, and pushes the disk holder 7 upward. The tapered portion 7a of the disk holder 7 is formed at an angle of 45 degrees or less with respect to the recording surface of the disk 1 to be inserted. The clamper portion 50 pushed up by the contact between the disk 1 and the tapered portion 7 a is attracted to the clamper cover 14, which is a magnetic material, by the attraction force of the magnet 11. At this time, the protrusion of the guide 14a of the clamper cover 14 is inserted into the center hole 12a of the magnet yoke 12, and the disk holder 7 is centered with respect to the turntable 4. As described above, when the disc 1 is placed at a predetermined position on the turntable 4, the clamper 50 descends to the turntable 4 side by its own weight and the attraction force of the magnet 11, and
Thus, a stable chucking operation of the disk 1 is realized.

  As described above, in the disc loading device of the first embodiment, the fixed type clamper having the clamper unit 50 that moves up and down is provided without using the clamper holder that is provided to rotate in the conventional device. The turntable 4 facing the clamper is moved up and down by the rotation of the traverse unit 5. The traverse unit 5 is configured to rotate around a position opposite to the position where the turntable 4 is provided, that is, around an axis near the peripheral portion of the loaded disc 1. In the disk loading device of the first embodiment configured as described above, the traverse unit 5 rotates when the disk 1 is pulled in and ejected, and the turntable side provided with the spindle motor 8 is moved up and down to enter the disk standby state. Transition between disc playback states.

  In the first embodiment, the thickness of the spindle motor 8 is so thin that the traverse unit 5 can be moved up and down within the frame 40. It is configured to be moved. When the traverse unit 5 is rotated and the turntable 4 is descending, the clamper 50 is normally attracted to the clamper cover 14 by the magnet 11 built in the clamper 50 and lifted. However, there is a case where the clamper unit 50 is lowered due to a shock at the time of transportation or the like, or the weight of the clamper unit 50 or the magnet 11 being attracted to a yoke (not shown) embedded in the turntable 4. . In such a case, when the disk 1 is pulled in, the taper portion 7 a formed at the clamper portion 50 and having an angle of 45 degrees or less comes into contact with the disk 1, the clamper portion 50 is lifted, and the magnet 11 is attracted to the clamper cover 14. As a result, the lower surface of the clamper unit 50 is disposed at substantially the same height as or slightly higher than the lower surface of the pad 3, and the inserted disc 1 is reliably disposed at the reproduction position.

  In the disk loading device according to the first embodiment, since the disk loading device is configured as described above, the thickness of the device can be reduced by effectively using the transport area of the disk 1. Further, in the first embodiment, since the centering operation is performed by inserting the center hole 12a of the clamper portion 50 into the convex portion 14a provided on the clamper cover 14, the chuck of the disk 1 is stably and surely secured. King operation can be performed.

  The hole 12a formed at the center of the clamper portion 50 that fits into the guide 14a of the clamper cover 14 is shown as an example formed in the magnet yoke 12 in the first embodiment, but may be formed in the disk holder 7. It is. As for the shape of the guide 14a of the clamper cover 14, as long as the clamper portion 50 is guided to a predetermined position, a combination of irregularities formed in a ring shape other than a simple combination of irregularities of protrusions and holes may be used. Good.

  In the first embodiment, the disk-facing surface (the lower surface in FIG. 4) of the disk holder 7 attracted to the clamper cover 14 is formed of a material having a low coefficient of friction such as a resin material. At this time, the height is substantially the same as the height from the mounting surface of the turntable 4 to the lower surface of the pad 3. Therefore, when the disc 1 is pulled in and ejected, the force of the roller 2 of the disc feeder 16 for urging the disc 1 upward causes the disc facing surface of the disc holder 7 to contact the upper surface of the disc 1 and the disc 1 Contact with the top cover 13 is prevented.

  As described above, according to the first embodiment, the clamper unit 50 is of a fixed type that can move freely, and the traverse unit 5 is configured to be moved up and down. It can be used effectively and the device can be made thinner. Further, in the first embodiment, since the alignment of the clamper unit 50 can be performed by the protrusions 14a formed on the clamper case 14, the position of the clamper unit 50 is stabilized, and the chucking operation of the disc 1 can be reliably performed.

  Second Embodiment Next, a second embodiment of the disc loading device according to the present invention will be described with reference to FIG. FIG. 6 is a side sectional view of an essential part showing an example in which the disk loading device according to the second embodiment of the present invention is incorporated in a notebook personal computer 216 as a disk reproducing device. In FIG. 6, components having the same functions and configurations as those of the disk loading device according to the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  As shown in FIG. 6, in the disc loading device according to the second embodiment, a reproducing mechanism for reproducing the mounted disc 1 is provided inside a frame 240 including a bottom cover 209 and a top cover 213. A clamper cover 214 is attached to the top cover 213, and a vertically movable clamper unit 50 is provided inside the clamper cover 214. Inside the frame, a turntable 4 driven by a spindle motor 8 is disposed at a position facing the clamper unit 50. Further, inside the frame 240, a pickup 10 for reading information of the mounted disc 1 and a traverse unit 5 for moving the pickup 10 in the diameter direction of the disc 1 are provided. The traverse unit 5 is configured to rotate by a predetermined angle about a shaft 6a. By the rotation of the traverse unit 5, the turntable 4 shifts between the disk standby state of the disk 1 and the clamping state.

  FIG. 6 shows an example in which the disk loading device configured as described above is incorporated in a notebook personal computer 216. In the disc loading device including the top cover 213 and the bottom cover 209, the top cover 213 on the disc insertion side is formed at the same height as the upper surface of the clamper cover 214. On the other hand, the top cover 213 on the traverse unit 5 side is formed at the same height as the lower surface of the clamper cover 214. Thus, in the disc loading device of the second embodiment, the top cover 213 on the traverse unit 5 side (rear portion of the device) is thinner by the dimension C than the top cover 213 on the disc insertion side (front portion of the device). The keyboard portion 218 of the notebook personal computer 216 can be arranged in an inner space generated by the step formed as described above. Further, in the disc loading device of the second embodiment, the top cover 213 on the disc insertion side is formed in a flat shape at the same height as the upper surface of the clamper cover 214, so that the palm rest portion 217 on the plane is disposed in this portion. be able to.

  With the above-described configuration, the disk loading device according to the second embodiment can effectively use the space of the notebook personal computer 216, and can achieve a reduction in the thickness of the notebook personal computer 216. Further, by forming the corner surface 209a at the front end portion (the lower left portion in FIG. 6) of the bottom cover 209, the degree of freedom in design of the exterior part 219 of the notebook personal computer 216 can be increased.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a disc loading device having a function of recording and reproducing on a disc-shaped recording medium such as a CD (hereinafter simply referred to as a disc).

FIG. 2 is a side view of a main part showing a disk standby state in Embodiment 1 of the disk loading device according to the present invention. FIG. 4 is a side view of a main part of the disk loading device according to the first embodiment of the present invention, illustrating a state where the disk is being pulled in; Principal part side view showing a sandwiched state in Embodiment 1 of the disk loading device according to the present invention. FIG. 4 is a cross-sectional view of a main part showing a state where the clamper is in the process of pulling in the disk in the disk loading device according to the first embodiment of the present invention. Principal part cross-sectional view showing a clamped state of a clamper part in Embodiment 1 of the disk loading device according to the present invention. Principal section view showing an example in which the second embodiment of the disc loading apparatus according to the present invention is incorporated in a notebook personal computer as a disc reproducing apparatus. Side sectional view of a main part showing a state in which a conventional disk loading device is drawing a disk. Side sectional view of a main part showing a sandwiched state of a conventional disk loading device.

Explanation of reference numerals

Reference Signs List 1 disk 2 roller 3 pad 4 turntable 5 traverse unit 6 traverse chassis 6a shaft 7 disk holder 8 spindle motor 9 bottom cover 10 pickup 11 magnet 12 magnet yoke 12a center hole 13 top cover 14 clamper cover 14a guide 50 clamper section

Claims (4)

  Inside a frame formed by a bottom cover and a top cover, a turntable driven by a spindle motor, a pickup for reading information on a mounted disc, and a mechanism for moving the pickup in a diameter direction of the disc. The traverse unit is configured to rotate by a predetermined angle around the outer edge of the loaded disc, and the turntable causes the turntable to be in a disc standby state of the disc. A disc loading method for moving between the disc and the clamping state, wherein the pickup is arranged in the outer peripheral direction of the disc when the traverse unit is in a disc standby state.   Inside a frame formed by a bottom cover and a top cover, a turntable driven by a spindle motor, a pickup for reading information on a mounted disc, and a mechanism for moving the pickup in a diameter direction of the disc. The traverse unit is configured to rotate by a predetermined angle around the outer edge of the loaded disc, and the turntable causes the turntable to be in a disc standby state of the disc. A disc loading method for moving the pickup in an outer peripheral direction of the disc before ejecting the traverse unit during ejection of the disc. Loading method.   3. The disk loading method according to claim 1, wherein the disk is inserted into the frame without using a disk tray for mounting the disk. Inside a frame formed by a bottom cover and a top cover, a turntable driven by a spindle motor, a pickup for reading information on a mounted disc, and a mechanism for moving the pickup in a diameter direction of the disc. The traverse unit is configured to rotate by a predetermined angle around the outer edge of the loaded disc, and the turntable causes the turntable to be in a disc standby state of the disc. A disc loading device that moves between the disc loading state and the holding state, wherein the pickup is moved in the outer peripheral direction of the disc to be mounted when the disc is inserted and ejected. Disk loading device.

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