JP2003296995A - Recording medium support apparatus, carrying apparatus for recording medium support member, and reproducing apparatus provided with the carrying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording medium support apparatus for supporting a disk tray without causing a tilt in a normal state. <P>SOLUTION: A tip of a first guide groove 37 provided to one side edge in parallel with a moving direction of a synthesis resin made disk tray 20 for supporting an optical disk 2 is formed to be wider than other areas, when the disk tray 20 is at a contained position at which the disk tray 20 is contained in an apparatus main body, a guide projection 56 is engaged with a wide spread part 37a. A third guide projection 63 of a frame 53 is engaged with a third guide groove 40 provided to a rear side of the disk tray 20. Thus, even when the first guide groove 37 is curved or the like due to distortion of dies or the like at injection molding, the disk tray 20 is positioned and supported at the contained position without being tilted in the horizontal direction. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium holding device for moving a recording medium alone such as a disc or a recording medium cartridge such as a disc cartridge, which is moved between a reading position and a taking-out position of the recording medium, and recording. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium holding member conveying device and a reproducing device provided with the conveying device.

[0002]

2. Description of the Related Art Some disk reproducing apparatuses use a disk tray to move an optical disk, which is a recording medium, between a reading position for reading data and an extracting position for taking out the optical disk. The disc tray has a tray body having a substantially rectangular plate shape, and a disc holding portion having a diameter substantially the same as that of an optical disc inscribed therein is formed in a concave shape in the tray body. Further, the tray main body is linearly formed with guide grooves for guiding the movement between the read position and the take-out position at both ends in the moving direction. Guide protrusions on the transport mechanism side are engaged with guide grooves provided on both ends of the tray body, and a rack gear is formed on one guide groove side.The rack gear has a drive gear on the transport mechanism side. Are meshed. The drive gear of the disc tray is rotated by the drive motor, and the disc tray is linearly extended between the read position and the eject position while being guided by the guide protrusions engaged with the linear guide grooves. Be moved.

The disc tray has an optical pickup opening for exposing the signal recording surface of the optical disc held by the disc holding portion to an optical pickup device mounted on the main body of the apparatus, and a vibration absorbing mechanism of the main body of the apparatus. An opening or the like that serves as a relief is formed by a through hole.

The disc tray is used for reproducing an optical disc.
It is in the state of being pulled into the main body of the device by the transport mechanism,
The signal recording surface of the optical disc is exposed to the optical pickup device through the optical pickup opening. The optical disc held in the disc holding portion is chucked and rotated by the disc rotation drive mechanism, and the optical pickup device irradiates the signal recording surface with a light beam and detects the reflected light to read data. Is done.
Further, the disc tray is pulled out of the main body of the apparatus when the optical disc is taken out, and the optical disc can be exchanged.

[0005]

The disc tray is usually formed by injection molding using a synthetic resin material such as ABS resin. The disc tray has a complicated shape by being provided with the disc holding portion of the concave portion and the opening portion of the through hole as described above by injection molding. Therefore, when the disc tray is formed by injection molding, distortion or the like may occur, and the guide groove may not be formed linearly and may be deformed. For example, the disc tray is formed in a substantially barrel shape that swells in the width direction,
The guide groove will be curved outward. When the guide groove is deformed in this way, the disc tray will
Inclination occurs in the horizontal direction at the read position and the take-out position.

The disc tray may have a lid which is part of the outer casing of the main body of the apparatus attached to the tip of the disc tray. When tilted, this lid does not become flush with other regions of the outer casing, which causes the appearance of the apparatus main body to deteriorate. Further, if the disc tray is tilted at the read position, the position of the optical disc held by the disc holding portion is displaced from the chucking position, and the disc rotation drive mechanism cannot reliably chuck the optical disc. There is also.

The present invention has been made in view of the above problems, and an object thereof is to hold a recording medium holding member in a normal state without tilting and to provide a part of an outer casing at a tip portion. A recording medium holding device that is flush with the outer casing even when the constituent decorative plate is attached and can prevent the appearance from being deteriorated, and a conveying device that can convey the recording medium holding member linearly An object of the present invention is to provide an apparatus and a reproducing apparatus equipped with this carrying apparatus.

Another object of the present invention is to provide a recording medium holding device and a recording medium holding member which hold the recording medium holding member at a regular position so that the recording medium can be surely recorded and / or reproduced. An object of the present invention is to provide a carrying device that can carry and a reproducing device including the carrying device.

[0009]

In order to solve the above-mentioned problems, a recording medium holding device according to the present invention includes a main body portion provided with a recording medium holding portion for holding a recording medium, and a recording medium holding portion. Body for guiding the body portion when linearly moving the body portion between a reading position for reading the data recorded on the recording medium and an ejection position for taking out the recording medium held by the recording medium holding portion And guide portions provided on both sides parallel to the moving direction of the section. The main body portion and the guide portion are integrally formed of synthetic resin, and one of the guide portions drives the transport device side when the main body portion moves between the read position and the take-out position. A rack gear in which gears are meshed with each other and a guide groove in which a guide protrusion on the transfer device side is engaged are formed along the moving direction of the main body, and the guide groove is formed such that its tip end side is wider than other portions. ing.

Further, in order to solve the above-mentioned problems, the transport apparatus according to the present invention is provided with a recording medium holding section for holding a recording medium, and the data recorded on the recording medium held in the recording medium holding section is stored. Recording medium made of synthetic resin in which guide portions for linearly moving between a reading position for reading and a taking-out position for taking out the recording medium held by the recording medium holding portion are provided on both sides parallel to the moving direction A holding member, a guide means for guiding the movement of the recording medium holding member between the reading position and the take-out position, and a conveying means for moving the recording medium holding member between the reading position and the take-out position. . Then, one of the guide portions of the recording medium holding member is formed with a rack gear and a guide groove along the moving direction, and the guide groove is formed such that the tip end side is wider than the other portion, and the guide means is provided. Has a guide protrusion engaged with the guide groove, and the carrying means has a drive gear meshed with the rack gear, and the carrying means engages the guide protrusion with the guide groove by rotating the drive gear. The combined recording medium holding member is moved between the read position and the take-out position.

Further, in the reproducing apparatus according to the present invention, in order to solve the above-mentioned problems, a recording medium is provided with a reading position for reading the data recorded on the recording medium and an ejecting position for taking out the recording medium. In a reproducing apparatus including a transporting device that moves over a range, the transporting device is provided with a recording medium holding unit that holds a recording medium, and a reading position of the recording medium held in the recording medium holding unit and a holding position in the recording medium holding unit. A recording medium holding member made of a synthetic resin provided with guides on both sides parallel to the moving direction when the recording medium holding member moves linearly over the recording medium holding position, and a reading position and a taking-out position of the recording medium holding member. A guide means for guiding the movement of the recording medium holding member, and a conveying means for moving the recording medium holding member between the reading position and the taking-out position. Then, in one of the guide portions of the recording medium holding member, a rack gear and a guide groove are formed along the moving direction, and the guide groove is
The front end side is formed wider than the other portion, the guide means has a guide protrusion engaged with the guide groove, the carrying means has a drive gear meshed with the rack gear, and the carrying means is By rotating the drive gear, the recording medium holding member whose guide projection is engaged with the guide groove is moved between the read position and the take-out position.

[0012]

DETAILED DESCRIPTION OF THE INVENTION A disk reproducing apparatus to which the present invention is applied will be described below with reference to the drawings. As shown in FIG. 1, a disc reproducing apparatus 1 to which the present invention is applied is a CD (Co
A device that uses an optical disc 2 such as an mpact disc) or a DVD (Digital Versatile Disc) as a recording medium, and has an outer casing 3 that constitutes the main body of the device. A base 4 is provided inside the outer casing 3, and a disk rotation drive mechanism 5 for rotating the optical disk 2 and the optical disk 2 are mounted on the base 4.
An optical pickup device 6 for irradiating a light beam is arranged to constitute a reproducing section.

Here, the optical disc 2 is formed by laminating a reflection film and a protective film on one surface of a light-transmissive disc substrate having a pit pattern corresponding to recording data on one surface. In addition, a center hole 2a with which the disc table 8 of the disc rotation drive mechanism 5 is engaged is provided in the central portion. The optical disc 2 has a signal recording surface on the disc substrate side, and is mounted on the disc reproducing device 1 so that the signal recording face faces the optical pickup device 6. The optical disc 2 is a read-only optical disc in which data is recorded in advance by a pit pattern, as well as a write-once optical disc using an organic dye material in a recording layer,
It may be a rewritable optical disc using a phase change material for the recording layer.

The disk rotation drive mechanism 5 for rotationally driving the optical disk 2 has a spindle motor 7 serving as a drive source for rotating the optical disk 2. The spindle motor 7 is substantially in the center of the lower surface of the base 4. The drive shaft is disposed in the portion so as to project to the upper surface side of the base 4. A disk table 8 that is engaged with the center hole 2a of the optical disk 2 is attached to the drive shaft of the spindle motor 7. A clamping plate (not shown) is attached at a position facing the disc table 8. When the optical disc 2 is rotated, the disc table 8 slightly lifts the optical disc 2 from the disc tray 20 and holds the optical disc 2 with the clamping plate in a rotatable state. The disc table 8 holds the optical disc 2 rotatably sandwiched between the disc table 8 and the clamping plate by driving the spindle motor 7.
For example, it rotates so that the linear velocity is constant.

An optical pickup device 6 is arranged on the base 4. The optical pickup device 6 has, as an optical system, a semiconductor laser that emits a light beam, an objective lens 9 that focuses the light beam emitted from the semiconductor laser, and a light detection that detects a returning light beam reflected by the optical disc 2. It is equipped with a container. The light beam emitted from the semiconductor laser is focused by the objective lens 9 and applied to the signal recording surface of the optical disc 2. The returning light beam reflected by the signal recording surface of the optical disc 2 is converted into an electric signal by the photodetector and output to the RF amplifier.

The optical pickup device 6 also includes an objective lens driving mechanism for driving and displacing the objective lens 9 in the focusing direction and the tracking direction. This objective lens drive mechanism has a magnet attached to the base side and a coil attached to the lens holder side that holds the objective lens 9 for focusing control and tracking control, respectively. The objective lens drive mechanism for focusing control and tracking control displaces the objective lens 9 in the focusing direction and the tracking direction by the action of the magnetic field generated by the magnet and the current flowing in the coil. The optical pickup device 6 configured as described above is supported by the guide shaft 12 provided in the opening 11 provided in the base 4 so as to be movable in the radial direction of the optical disc 2 supported by the disc table 8. . The optical pickup device 13 is fed and operated in the radial direction of the optical disc 2 by a feed mechanism that uses a motor 13 attached to the base 4 as a drive source.

As described above, the disk rotation driving mechanism 5 and the optical pickup device 6 are arranged on the base 4 to form a reproducing section for reading the data recorded on the optical disk 2. Then, in the disc reproducing apparatus 1, the disc tray 20 is used to convey the optical disc 2 to the reproducing portion.

The disc tray 20 will be described with reference to FIGS. 2 and 3.
Has a tray main body 21 formed of a substantially rectangular plate-shaped body.
The tray main body 21 is provided with a substantially circular first holding portion 22 for holding the optical disc 2 inscribed on one main surface portion. The first disc holding portion 22 is
Optical disk 2 formed in a concave shape and having a diameter of approximately 12 cm
Hold. Further, the tray main body 21 is provided with a second disc holding portion 23 having a diameter smaller than that of the first disc holding portion 22 centered on the first disc holding portion 22. The second disc holding portion 23 is formed in a concave shape further below the bottom surface of the first disc holding portion 22, and holds the optical disc 2 having a diameter of about 8 cm.

Further, the tray body 21 has an optical disc 2
An opening 24 is provided to expose the signal recording surface of the optical pickup device 6. The opening 24 is provided substantially at the center in the width direction of the tray body 21 and extends from the back side to the center in the longitudinal direction, and is rotatably held by the first disk holding portion 22 or the second disk holding portion 23. The signal recording area of the optical disc 2 is made to face the objective lens 9 of the optical pickup device 6 over the inner and outer circumferences, and the center hole 2a is made to face the disc table 8 of the disc rotation drive mechanism 5. During reproduction of the optical disc 2, the disc table 8 constituting the disc rotation drive mechanism 5 enters through the opening 24 and engages with the center hole 2a of the optical disc 2, and the optical pickup device 6 emits a light beam. Irradiation is performed from the opening 24 to the inner and outer circumferences of the signal recording area of the optical disc 2 rotated by the disc table 8.

Notches 25, 25 are provided in substantially central regions of both side edges of the tray body 21 in the longitudinal direction. The notches 25, 25 allow a part of the outer peripheral edge of the optical disc 2 held by the first disc holding portion 22 to be exposed to the outside of the first disc holding portion 22, so that the user can easily take in and out the optical disc 2. I am able to do that. Also, the first
Escape holes 26, 26 of the vibration preventing mechanisms 85, 85 of the optical pickup device 6 are provided on the front side of the boundary between the disc holding portion 22 and the second disc holding portion 23.
The vibration preventing mechanisms 85, 85 are attached to the base 4 on which the optical pickup device 6 is arranged, the vibration applied to the outer casing 3 is transmitted to the optical pickup device 6, and the optical pickup device 6 accurately reads the data. It prevents you from being unable to. When the base 4 approaches the disc tray 20 during reproduction of the optical disc 2, the vibration preventing mechanisms 85, 85 project toward the first and second disc holding portions 22, 23 so as not to contact the optical disc 2. It engages with the escape holes 26, 26 to the extent that it does not occur.

On the front surface of the tray body 21, a mounting piece 28 for mounting a decorative plate 27 which constitutes a part of the outer casing 3.
Is provided. The decorative plate 27 also serves as a lid that closes an insertion / removal opening 29 for inserting / removing the disc tray 20 provided in the outer casing 3. On the back surface of the decorative plate 27, the mounting groove 3
1 is provided, and the decorative plate 27 is configured such that the mounting piece 28 on the tray body 21 side is engaged with the mounting groove 31.
It is attached to the front surface of the tray body 21.

A bulging portion 32 and an opening 3 continuous with the bulging portion 32 are provided at one corner on the back side of the tray body 21.
3 and 3 are provided. The bulge 32 and the opening 33 are
When the disc tray 20 is housed in the outer casing 3, it constitutes an escape portion of the motor 13 which is a drive source of a feeding mechanism for moving the optical pickup device 6 attached to the base 4 in the radial direction of the optical disc 2.

As shown in FIGS. 2 and 3, the tray body 2
A first guide rail 34 and a second guide rail 35, which serve as guides for moving the disc tray 20, are provided on both side edges of the first longitudinal direction so as to project outward.
The first guide rail 34 is linearly provided continuously on one side edge of the tray body 21 in the longitudinal direction, and the second guide rail 35 is provided on the other side edge of the tray body 21 in the longitudinal direction. Are continuously provided in a straight line.

First, the first guide rail 34 provided on one side edge portion along the longitudinal direction of the tray body 21 will be described. As shown in FIG. 3, one side edge on the back surface of the tray body 21 is described. The part is provided with a linear rack gear 36 directed inward. A drive gear 78, which constitutes a transport mechanism 70 for moving the disc tray 21, is meshed with the rack gear 36. The disc tray 20 is moved and operated inside and outside the outer casing 3 by the rotation of the drive gear 78. On the outer side of the rack gear 36, a first guide groove 37 in which a plurality of first guide pieces 55 on the guide mechanism 50 side and the guide protrusions 56, 57 are engaged is linearly provided. The first guide groove 37 engages with the plurality of first guide pieces 55 and the guide protrusions 56 and 57, whereby the disc tray 2
0 can be linearly moved across the inside and outside of the outer casing 3.

As shown in FIG. 8, the first guide groove 37 is slightly wider than the first guide piece 55 and the guide protrusions 56, 57 on the guide mechanism 50 side except the tip side. It is formed so as to have a size b, and the tip side is set to a size a larger than the size b, and is composed of a reference width portion 37b of the size b and a widening portion 37a of the size a. First guide groove 37
At the position where the width switches from the dimension b to the dimension a,
The inclination is gentle in the moving direction so that no abnormal noise is generated when the disc tray 20 moves.
The surface of the first guide groove 37 on the rack gear 36 side, that is, the inner surface 38 serves as a reference surface, and the width of the widened portion 37a is widened to have a dimension a with reference to the inner surface 38. is doing.

The dimension a of the widened portion 37a and the dimension b of the reference width portion 37b constituting the first guide groove 37 will be specifically described below. As shown in FIG.
In the L ₂ portion that starts to change from 7b to the widened portion 37a, the guide protrusion 57 on the base end side that constitutes the guide mechanism 50 always satisfies the condition for engaging the reference width portion 37b of the dimension b. Further, in the portion L ₁ that starts to change from the widened portion 37a to the reference width portion 37b, when the third guide groove 40 and the third guide protrusion 63, which will be described later, engage with each other, the guide protrusion 56 on the tip side. Satisfies the condition for engaging the widened portion 37a having the dimension a.

Here, the disc tray 20 is made of a synthetic resin such as ABS by injection molding.
It is an integrally molded product. The disc tray 20 includes concave portions such as the first and second disc holding portions 22 and 23, an opening portion 24,
It is necessary to provide through holes such as 33 and the notch 25 and has a complicated shape. Moreover, in order to improve the appearance of the surface on the side that is touched by the user, it is necessary to use a metal mold for giving a texture treatment. It is necessary to change the temperature between the upper mold and the lower mold, and due to such a factor, distortion occurs during injection molding, and it is difficult to mold exactly the same as the designed size. For example, disc tray 2
When 0 is molded by injection molding as shown in FIG. 4,
It is molded into a substantially barrel shape with the widest width in the middle of the longitudinal direction. As a result, the first guide groove 37 is also formed in a warped shape that is slightly curved outward. Therefore, the dimension a of the widened portion 37a is equal to the reference width portion 37a.
With reference to the surface 38 on the inner side of the dimension b, the width is increased by the amount of warpage d.

Next, the second guide rail 35 provided on the other side edge portion along the longitudinal direction of the tray body 21 will be described. As shown in FIG. 3, the second guide rail 35 is provided on the back side of the second guide rail 35. Is provided with a second guide groove 39. The second guide groove 39 also corresponds to the first guide groove 3 described above.
Similar to 7, it is provided linearly. The second guide groove 39 is engaged with a plurality of second guide pieces 61, so that the disc tray 20 linearly extends inwardly and outwardly of the outer casing 3 in cooperation with the first guide groove 37. I am able to move. Incidentally, this second guide groove 39
Are formed with a constant width unlike the first guide groove 37. That is, the movement of the disc tray 20 is performed with reference to the first guide groove 37, and the second guide groove 39 is
It serves as an auxiliary for supporting the other end of the tray body 21.

Further, on the back side of the tray body 21, which is slightly on the second guide groove 39 side from the longitudinal centerline O on the back side of the tray body 21, the disc tray is positioned when the optical disc 2 is chucked. Third to do
The guide groove 40 is provided. The third guide groove 40 is accurately accommodated in the chucking position of the optical disc 2 by being engaged with the third guide protrusion 63 on the guide mechanism 50 side in a state of being housed in the outer casing 3. It can be positioned. As a result, the disc table 8 that enters through the opening 24 can be reliably engaged with the center hole 2a, and the optical disc 2 can be rotatably held in cooperation with the clamping plate.

Further, on the back side of the tray body 21,
Inside the second guide groove 39, the reproducing section for rotating the base 4 having the reproducing section and moving it between the reproducing position for reproducing the optical disk 2 and the retracting position for retracting the reproducing section at the time of loading. An operation groove 41 is provided. The reproducing portion operation groove 41 is almost entirely the second guide groove 39.
And a first straight line portion 41 provided in parallel with the second guide groove 39 on the back side of the tray body 21.
a, a first inclined portion 41b that is continuous with the first linear portion 41a and is bent inward, and a second guide groove 39 that is continuous with the first inclined portion 41b and that is inside the first linear portion 41a. A second linear portion 41c provided in parallel with the second linear portion 41c
a second inclined portion 41d which is continuous with c and is bent inward on the front surface side of the tray main body 21, and a vertical portion 41 which is continuous with the second inclined portion 41d and is perpendicular to the linear portions 41a and 41c.
e and is formed into a substantially J-shape as a whole.

As will be described later in detail, in the reproducing portion operation groove 41, the base 4 having the reproducing portion is formed and the disc tray 20 is provided.
The engaging projection 99 of the operation member 91 that moves in the direction orthogonal to the disc tray 20 for rotating in the direction of approaching and separating is engaged with the base 4 in relation to the movement of the disc tray 20. However, it can be rotated between the reproduction position and the retracted position.

When the disc tray 20 is pulled out from the outer casing 3 and is in a position where the optical disc 2 can be exchanged, the engaging projection 99 of the operating member is engaged with the first straight portion 41a, and the operating member 91 is The base 4 is held in the retracted position. As the disc tray 20 is drawn into the outer casing 3, the disc tray 20 moves over the first inclined portion 41b and the second straight portion 41c. When the disc tray 20 is retracted, the engaging projection 99 moves on the second straight portion 41c, so that the operating member 91 does not move and the base 4 does not move.
Is also in the shelter position. When the drawing operation of the disc tray 20 is completed, the engagement protrusion 99 moves from the second inclined portion 41d to the vertical portion 41e. As a result, the operating member 91 moves the base 4 in the direction approaching the disc tray 20 and holds it at the reproduction position.

Next, the guide mechanism 50 when the disk tray 20 as described above is taken in and out of the outer casing 3 which constitutes the main body of the apparatus will be described with reference to FIGS. As shown in FIGS. 5 and 6, the guide mechanism 50 includes a first guide portion 51 engaged with the first guide rail 34 and a second guide portion 35 engaged with the second guide rail 35 of the disc tray 20. And a guide portion 52 of. The first guide portion 51 and the second guide portion 52 are provided on a substantially rectangular frame 53. The frame 53 is attached to the inside of the outer casing 3, and has a first guide portion 51 on each of two first and second side walls 53a and 53b in the longitudinal direction.
And the second guide portion 52 are provided, and the base 4 constituting the reproducing portion is attached.

First, referring to FIG.
8 to FIG. 8, the first guide portion 5 will be described.
1 has the 1st support piece 54 which supports the 1st guide rail 34 provided in the 1st side wall 53a. This first
The upper surface of the supporting piece 54 is a supporting surface for supporting the first guide rail 34, and the first guide groove 3 is formed on this supporting surface.
A plurality of first guide pieces 55 engaging with 7 are provided in a line. These first guide pieces 55 are engaged with the first guide groove 37 so that they can be engaged with the first guide groove 37.
It is formed to have a thickness slightly smaller than the dimension b of the reference width portion 37b. Further, in front of the support surface of the first support piece 54, guide projections 56 and 57 are provided on the extension line of the first guide piece 55. The first guide protrusions 56 and 57 are also formed to have a thickness slightly smaller than the dimension b of the reference width portion 37b of the first guide groove 37.

Further, the first guide portion 51 has a plurality of first engaging pieces 58 which engage with the upper side of the first supporting piece 54 of the first side wall 53a and the upper side of the first guide rail 34. Is provided. The first guide rail 34 is supported by the first support piece 54, and the first engaging piece 58 is engaged from the upper side, so that rattling in the vertical direction is restricted, and the first guide groove 34 is formed. When the plurality of first guide pieces 55 and the guide protrusions 56 and 57 are engaged with 37, the rattling in the horizontal direction is regulated, and the disc tray 20 is held so as to be movable in the loading / unloading direction. .

Next, referring to FIG.
The second guide portion 5 will be described with reference to FIGS.
2 has the 2nd support piece 59 which supports the 2nd guide rail 35 provided in the 2nd side wall 53b. This second
The upper surface of the support piece 59 serves as a support surface for supporting the second guide rail 35, and the second guide groove 3 is formed on the support surface.
A plurality of second guide pieces 61 that engage with 9 are arranged in a line. These second guide pieces 61 are engaged with the first guide groove 37 so that they can be engaged with the second guide groove 39.
Is formed to have a thickness slightly smaller than the width.

Further, the second guide portion 52 has a plurality of second engaging pieces 62 which engage with the upper side of the second supporting piece 59 of the second side wall 53b and the upper side of the second guide rail 35. Is provided. The second guide rail 35 is supported by the second support piece 59, and the second engaging piece 62 is engaged from the upper side, so that rattling in the vertical direction is restricted, and the second guide groove is formed. With the plurality of second guide pieces 61 engaging with 38, the rattling in the horizontal direction is regulated, and the disc tray 20 is held so as to be movable in the loading / unloading direction.

Further, the guide mechanism 50, as shown in FIGS. 5, 6 and 9, has side walls 53a and 53b of the frame 53.
A third guide protrusion 63 that engages with the third guide groove 40 of the disc tray 20 is provided on the back wall 53c in between. The third guide protrusion 63 is provided on the disc tray 20.
When the disk is stored in the outer casing 3, the disk is fitted into the third guide groove 40, and the position of the optical disk 2 at the time of chucking can be accurately positioned. Thereby, the opening 24
The disk table 8 that comes in more surely makes sure that the center hole 2
The optical disk 2 can be rotatably clamped in cooperation with a and cooperate with the clamping plate.

Next, the transport mechanism 70 for moving the disc tray 20 inside and outside the outer casing 3 will be described with reference to FIGS.
Will be described with reference to. As shown in FIG. 5, the transport mechanism 70
Has a drive motor 71 as a drive source. The drive motor 71 is attached to the lower surface side of a mounting plate 72 integrally provided on the side walls 53a and 53b of the frame 53 so that the drive shaft projects toward the upper surface side. A first pulley 73 is attached to the drive shaft of the drive motor 71, and is connected to a second pulley 75 attached to a support shaft that is planted on the attachment plate 72 by an endless belt 74. A gear portion 75 a is integrally provided on the second pulley 75. A support shaft is erected on the mounting plate 72, and an intermediate gear 76 is attached to the support shaft. The intermediate gear 76 has a first gear portion 76a and a second gear portion 76b, and the first gear portion 76a is meshed with the gear portion 75 of the second pulley 75. A support shaft is erected on the mounting plate 72, and a transmission gear 77 is attached to the support shaft. The transmission gear 77 enables the driving force of the drive motor 71 to be used for the movement of the disc tray 20 and the operation of the base 4 having the reproducing portion, and is the second gear of the intermediate gear 76. A transmission gear portion 77a meshed with the portion 76b, a tray gear portion 77b for operating the disc tray 20, and a base gear portion 77c for operating the base 4 are integrally provided. Further, a supporting shaft is erected on the mounting plate 72,
A drive gear 78 for moving the disc tray 20 is attached to the support shaft. Drive gear 78
Engages with the tray gear portion 77b of the transmission gear 77 and also engages with the rack gear 36 of the disc tray 20.

The transport mechanism 70 configured as described above is
For example, when the drive motor 71 is driven in the normal direction, this drive force is applied to the first pulley 73, the second pulley 75, and the intermediate gear 7.
6, transmitted to the drive gear 78 via the transmission gear 77a,
The drive gear 78 is rotated in the normal direction (arrow e ₁ direction in FIG. 6). As a result, the rack gear 36 is driven by the drive gear 78.
The disc tray 20 meshed with is moved while being guided by the first and second guide portions 51 and 52 in the direction in which the disc tray 20 is pulled out to the outside of the outer casing 3. When the drive motor 71 is driven in the reverse direction, this drive force is transmitted to the drive gear 78 via the first pulley 73, the second pulley 75, the intermediate gear 76, and the transmission gear 77a, and the drive gear 78 rotates in the reverse direction. Direction (arrow e ₂ direction in FIG. 6). by this,
The disc tray 20 in which the rack gear 36 is meshed with the drive gear 78 is moved while being guided by the first and second guide portions 51 and 52 in the direction in which the rack tray 36 is drawn into the outer casing 3 from the outside of the outer casing 3.

By the way, as shown in FIG. 5, the base 4 in which the reproducing portion is constituted by providing the disc rotation driving mechanism 5 and the optical pickup device 6 is provided with a frame 5 as shown in FIG.
It is attached to 3. To explain this concretely,
In the support mechanism 80 for supporting the base 4 on the frame 53, support shafts 81, 81 provided on both side edges of the rotation support member 83 to which the base 4 is attached and supported are provided on the side walls 53a, 53b of the frame 53. Support portion 82 composed of a concave portion,
82 to engage the base 4 with the frame 5
3 is pivotally supported in the directions of arrows a ₁ and a _{2 in} FIG.

The back side of the base 4 is attached to the frame 53 via vibration preventing mechanisms 84, 84 for absorbing the vibration of the base 4, near both corners. The vibration preventing mechanisms 84, 84 are coil springs that serve as elastic members for mounting members for mounting the base 4 to the mounting portions of the frame 53,
An elastic body such as a rubber material is attached. Further, both corners on the front surface side of the base 4 are also attached to the rotation support member 83 via vibration preventing mechanisms 85, 85. The vibration preventing mechanisms 85, 85 are also formed by attaching an elastic body such as a coil spring or a rubber material to an attaching member for attaching the base 4 to the attaching portion of the rotation supporting member 83. The vibration preventing mechanisms 84, 84, 85, 85 prevent the vibration applied to the outer casing 3 from being transmitted to the optical pickup device 6 and preventing the optical pickup device 6 from reading data accurately. . The escape holes 26, 26 of the disc tray 20 described above are formed by the vibration preventing mechanism 85,
Escape 85.

In such a support mechanism 80, the support shafts 81, 81 of the rotation support member 83 are connected to the support portions 82, 8 of the frame 53.
By engaging with the disk _2, the base 4 having the reproducing portion is supported rotatably with respect to the frame 53 in the directions of arrows a ₁ and a _{2 in} FIG. 5, and the disk rotation drive mechanism 5 and the optical pickup device are supported. 6 can be moved toward and away from the disc tray 20. The back side of the base 4 is attached to the frame 53 via the vibration prevention mechanisms 84, 84, and the front side of the base 4 is attached to the rotation support member 83.
Since it is attached via 5, the frame 53
The vibration applied to the base 4 is prevented from being transmitted to the base 4, and for example, even if vibration is applied during reproduction, it is possible to prevent the optical disk 2 from vibrating and causing a surface wobbling or the tracking servo of the objective lens 9 from being disengaged. You can

The support mechanism 8 is thus attached to the frame 53.
An operation mechanism 90 for rotating the base 4, which is rotatably supported by 0, is provided. This operation mechanism 90 is shown in FIG.
This operation mechanism 9 will be described with reference to FIGS. 6 and 10.
0 has an operation member 91 that is moved and operated in a direction orthogonal to the moving direction of the disc tray 20 by the tray gear portion 77b of the transmission gear 77 that constitutes the transport mechanism 70.

This operating member 91 is used for the disc tray 20.
A moving guide piece 92 substantially parallel to and a base operation piece 93 substantially perpendicular to the disc tray 20 are integrally formed. The movement guide piece 92 is a plate-like body that is substantially parallel to the disc tray 20, and the end surface of the movement guide piece 92 faces the tray gear portion 77b of the transmission gear 77 that constitutes the transport mechanism 70.
A rack gear 94 that meshes with the tray gear portion 77b of the transmission gear 77 is provided on the end surface of the movement guide piece 92. Further, the movement guide piece 92 is provided with a plurality of guide holes 95 along the movement direction of the operation member 91. A plurality of guide pieces 96 provided on the frame 53 are engaged with the guide holes 95, and the operation member 91 is attached to the disc tray 20.
5, 6 and 10 which is orthogonal to the moving direction of the arrow b ₁
And b ₂ direction. Since the rack gear 94 is meshed with the tray gear portion 77b of the transmission gear 77, the operation member 91 is guided by the guide piece 96 engaged with the guide hole 95 while being guided by the arrow in FIGS. 5, 6 and 10. Move in b ₁ and b ₂ directions.

The base operation piece 93 provided substantially perpendicular to the moving guide piece 92 has a surface substantially perpendicular to the disc tray 20, and the base operation piece 93 is provided on this surface on the base 4 having a reproducing section. Operation groove 98 with which the operated operation protrusion 97 is engaged
Is provided. The operation groove 98 is provided on the first horizontal portion 98a for holding the base 4 in a state of being separated from the disc tray 20, and is provided on the upper side of the first horizontal portion 98a so that the base 4 is close to the disc tray 20. It has the 2nd horizontal part 98b hold | maintained and the inclination part 98c which connects the 1st horizontal part 98a and the 2nd horizontal part 98b.

When the disc tray 20 is taken in and out, the operation member 91 is operated by the arrow b _{2 in} FIGS. 5, 6 and 10.
The operation protrusion 97 is engaged with the lower first horizontal portion 98a. As a result, the base 4 in which the operation protrusion 97 is engaged with the first horizontal portion 98a is
The support shaft 81 rotates about the fulcrum in the direction a _{1 in} FIG. 5, and the disc rotation drive mechanism 5 and the optical pickup device 6 are retracted from the disc tray 20, that is, separated from each other.
When the transmission gear 77 meshed with the tray gear portion 77b meshed with the rack gear 94 rotates in the reverse direction, the operation member 91 is guided by the guide piece 96 engaged with the guide hole 95, and the operation member 91 is guided by the guide member 96 as shown in FIGS. It moves in the direction of arrow b ₁ in FIG. Then, the operation protrusion 97 moves from the first horizontal portion 98a to the second horizontal portion 98b above the first horizontal portion 98a via the inclined portion 98c. As a result, the base 4 provided with the operation protrusions 97 is attached to the support portion 8 of the frame 53.
The spindle 81 supported by 2 is used as a fulcrum to rotate in the a ₂ direction in FIG. As a result, the base 4 having the reproducing portion is rotated in the direction approaching the disc tray 20, and the disc table 8 constituting the disc rotation operation mechanism 5 is inserted into the disc holding portions 22 and 23 through the opening 24. Then, the optical disk 2 held by the disk holding units 22 and 23 is chucked so that data can be read.

The rotation operation of the base 4 is performed by the disk rotation drive mechanism 5, the optical pickup device 6 and the disk tray 2.
In order to prevent the disk tray 20 from contacting or colliding with 0, it is necessary to perform the operation in a state where the disk tray 20 is completely housed in the outer casing 3. Further, the operation member 91 is moved by using a transmission gear 77 whose drive source is a drive motor 71 which constitutes the transport mechanism 70. Therefore, the operation member 91
Relates to the movement of the disc tray 20 and the movement of the operation member 91, and the rotation of the base including the reproducing unit is performed in a state where the disc tray 20 is completely housed in the outer casing 3. That is, the base operation piece 93 has the tray main body 2 on the end surface facing the back surface of the disc tray 20.
Engagement protrusions 99 that engage with the reproduction section operation grooves 41 provided on the back surface of the No. 1 are formed. The engaging protrusion 99 engages with the reproducing portion operation groove 41 on the disc tray 20 side so that the base 4 connected to the operating member 91 can be rotated in association with the taking in and out of the disc tray 20. To do. Although the operation will be described later, by engaging the engaging projection 99 with the reproducing portion operation groove 41, the operating member 91 moves and the reproducing portion moves after the disc tray 20 is completely housed in the outer casing 3. The configured base 4 is rotated in the direction of arrow a _{2 in} FIG. 5 so that the base 4 is brought close to the disc tray 20.

When the disc tray 20 is pulled out from the outer casing 3 and is in a position where the optical disc 2 can be exchanged, the engaging projection 99 of the operating member is engaged with the first linear portion 41a, and the operating member is the base. 4 is held in the retracted position.
As the disc tray 20 is drawn into the outer casing 3, the disc tray 20 moves over the first inclined portion 41b and the second straight portion 41c. When the disc tray 20 is retracted, the engaging projection 99 moves on the second linear portion 41c, so that the operating member 91 does not move and the base 4 is also in the retracted position. When the drawing operation of the disc tray 20 is completed, the engagement protrusion 99 moves from the second inclined portion 41d to the vertical portion 41e. As a result, the operating member 91 moves the base 4 in the direction approaching the disc tray 20 and holds it at the reproduction position.

Next, the operation of the disc reproducing apparatus 1 configured as described above will be described. First, a state in which the disc tray 20 is housed in the outer casing 3 will be described with reference to FIG. Note that in the state shown in FIG. 6, the disc tray 20 is in the storage position, but the base 4 on which the reproducing unit is configured is separated from the disc tray 20. When the disc tray 20 is in the storage position where the disc tray 20 is stored in the outer casing 3, the drive gear 78 that constitutes the transport mechanism 70 is in a state of meshing with the front end portion of the rack gear 36 of the disc tray 20. At this time, in the first guide groove 37 of the disc tray 20, the widened portion 37a having the dimension a on the leading end side is formed wider than the reference width portion 37b having the dimension b.
The drive gear 78 meshing with 6 has a predetermined pressure angle, and the first guide piece 55, the guide projection 56, which constitutes the first guide portion 51 of the disc tray 20 provided on the frame 53. It is pressing in the direction of 57. This allows
The first guide piece 55 and the guide protrusion 57 contact the inner surface 38 of the first guide groove 37 of the disc tray 20,
The disc tray 20 includes a guide protrusion 56 on the widening portion 37a.
The rattling associated with the engagement of the is prevented.
At this time, the guide protrusion 56 on the front end side is engaged with the widened portion 37a forming the first guide groove 37, and the guide protrusion 57 located on the base end side of the guide protrusion 56.
Engages with the reference width portion 57b.

At this time, in the operating member 91 constituting the operating mechanism 90, the engaging projection 99 has the second inclined portion 41d and the vertical portion 41e of the reproducing portion operating groove 41 of the disc tray 20.
Since it is located near the boundary portion between, the second inclined portion 41d to move b in _one direction in a slightly Figure 6, the base gear section of the one end the transmission gear 77 of the rack gear 94 77c
It is in a state of meshing with. At this time, the operation protrusion 97 of the base 4 that engages with the operation groove 98 of the operation member 91 is the operation groove 9
8 is in a state of being engaged with the lower first horizontal portion 98a forming the disk 8, and therefore the base 4 forming the reproducing section is still rotated in the direction of the arrow a _{1 in} FIGS. It is in a retracted position separated from the tray 20. That is, in this state, the disc rotation drive mechanism 5 is
Is not chucked and is not ready for playback.

The disc tray 20 has a third guide groove 4
0 engages with the third guide protrusion 63 of the frame 53 and is positioned. The third guide protrusion 63 is provided at the widening portion 37 a of the first guide groove 37 at the guide protrusion 5.
Since rattling with respect to 6 is allowed, even when the first guide groove 37 is curved due to molding distortion or the like, it is engaged with the third guide groove 40. Also,
The disc tray 20 is provided with a widened portion 37a in the first guide groove 37 on the front surface side, and the guide protrusion 56 is engaged with the widened portion 37a, thereby allowing rattling and allowing the back side. The third guide protrusion 63 to the third
Is engaged with the guide groove 40 and is positioned so as not to tilt in the horizontal direction. Therefore, the disc holder 2
The optical discs 2 held by the optical discs 2 and 23 are in a predetermined position, and when the disc table 8 constituting the disc rotation operating mechanism 5 enters through the opening 24 for reproducing as will be described below, the optical disc 2 is inserted into the center hole 2a. The disc table 8 is securely engaged, and the optical disc 2 can be rotated in a stable state.

In this state, the disc tray 2
In No. 0, since the third guide protrusion 63 of the frame 53 is engaged with the third guide groove 40 and positioned, the horizontal inclination disappears, and the decorative plate 2 that closes the insertion / removal opening 29.
7 has no step with the outer casing 3 and is substantially flush with the outer casing 3, and it is possible to prevent the appearance and the touch from being deteriorated.

In FIG. 11, the width of the first guide groove 37 of the disc tray 20 is all dimension b, and the third guide projection 62 of the frame 53 is not engaged with the third guide groove 40. The storage state of the disc tray 20 when the disc tray is opened is shown. At this time, the rack gear 36 of the disc tray 20
The drive gear 78 meshing with the front end of the disk pushes the disk tray toward the first guide piece 55. Then, since the first guide groove 37 is usually formed wider than the first guide piece 55, the disc tray 20
11 is tilted in the direction of arrow X in FIG. 11 by θ ₁ ° with the front guide piece 55 as a fulcrum.

Here, the inclination θ ₁ ° will be described with reference to FIG. 12, the inclination θ ₁ ° is expressed by the following equation.

Θ ₁ ° = tan ⁻¹ ((X ₂ −X ₁ ) / Y ₁ ) ... Equation 1 where X ₁ is the center line O of the disc tray 20 and the first
Shows the distance from the center of the first guide groove 37 in the width direction at the position where the guide protrusion 56 of the guide groove 37 of
X ₂ represents the distance between the center line O of the disc tray 20 and the center of the first guide groove 37 in the width direction at the position where the guide protrusion 57 of the first guide groove 37 is engaged, and Y ₁ is
The distance between the guide protrusions 56 and 57 is shown.

When this inclination θ ₁ ° is too large, the first guide groove 37, the first guide piece 55, and the guide protrusion 5 are formed.
6 and 57 interfere with each other and the disc tray 20 does not operate smoothly. Further, when the disc tray 20 is housed, a step is formed between the insertion / removal opening 29 and the decorative plate 27, which makes the appearance unfavorable, and the position of the optical disc 2 held by the disc holding portions 22 and 23. Is significantly deviated from the chucking position, and the optical disk 2 cannot be reliably chucked.

On the other hand, in the example shown in FIG. 6, the third guide projection 62 of the frame 53 is engaged with the third guide groove 40, and the storage position is regulated.
The inclination is θ ₂ in FIG. The inclination θ ₂ is extremely small, for example, an inclination caused by an error between the third guide groove 40 and the third guide protrusion 62.

[0059] Here, FIG. 6 and FIG. 1 for inclination theta ₂ °
Describing with reference to FIG. ₂ , this inclination θ ₂ ° is expressed by the following equation.

[0060]   θ_Two° = tan^-1((X_Two-X₀) / Y_Two) Equation 2 Where X_TwoIs the center line O of the disc tray 20 and the first
At the position where the guide protrusion 57 of the guide groove 37 of
The distance from the center of the first guide groove 37 in the width direction,
X₀Is the center line O of the disc tray 20 and the first guide
Indicates the distance from the center line O of the groove 37, Y_TwoIs the guide protrusion
The distance between 57 and the third guide protrusion 63 is shown. here,
Y₁And Y_TwoThe relationship with is clear from Figs. 6 and 12.
Sea urchin, Y _Two≫ Y₁Is.

By the way, as shown in FIG.
The center line O of the tray 20 and the center line of the first guide groove 37
Is the distance of X₀Depending on the tilt of the disc tray 20
For example, X_ThreeTo X₅Change over time. In any case
Also, X_Two-X₀≤X_Two-X ₁Is.

From the above conditions, it is calculated from the above equation 1.
θ₁And θ calculated from the above equation 2 _TwoThe relationship with ° is θ
₁° ≫ θ_TwoAnd the disc tray 20 is at the storage position.
In the above, the example shown in FIG. 6 is better than the example shown in FIG.
It can be seen that the slope becomes smaller. And X_Two= X₀When
By providing the guide protrusion 57 so that_Two°
≈0 °, that is, the disc tray 20 is not tilted
You can

When the inclination of the disc tray 20 is focused on the relationship between the engagement protrusion 99 of the operation member 91 and the reproduction operation groove 41 of the disc tray 20, it is as shown in FIG. FIG. 14 shows the operation member 91 in the state of FIGS. 6 and 11, that is, when the disc tray 20 is in the storage position.
7 is a diagram showing a positional relationship between the operation protrusion 99 and the reproduction operation groove 41 of FIG. 14, the solid line indicates the reproduction operation groove 41 of the disc tray 20 shown in FIG. 6, and the dotted line indicates the reproduction operation groove 41 of the disc tray 20 shown in FIG. In the example shown in FIG. 6, since the inclination θ ₂ ° is almost 0, the engagement protrusion 99
Is located substantially on the center line of the regeneration operation groove 41. In contrast, the example of FIG. 11, the disk tray 20 is theta ₁ ° min X
Since it is tilted in the direction, the reproduction operation groove 41 is also tilted by θ ₁ °, and when it is pressed by the drive gear 78, the position of the engagement protrusion 99 is displaced compared to the example of FIG. 6. . Therefore, the disc holding portion 2 is devoted to this shift.
The positions of the optical discs 2 held by the optical discs 2 and 23 are also displaced, so that, for example, chucking cannot be performed reliably. On the other hand, in the example of FIG. 6, the position of the engaging protrusion 99 is substantially on the center line O, and is in the regular position. Therefore, the position of the optical disc 2 held by the disc holding portions 22 and 23 is also at the proper position, and, for example, chucking can be reliably performed.

Also, when the operation projection 99 moves from the state shown in FIG. 14 toward the vertical portion 41e for reproduction or toward the second linear portion 41c for ejecting the optical disk 2, The engagement protrusion 99 in the example of FIG. 6 can move smoothly without contacting the side wall forming the regeneration operation groove 41 as compared with the engagement protrusion 99 in the example of FIG. 11.

In this state, for example, when the user presses the reproduction start button constituting the operation section, the drive motor 7
1 is driven in reverse. As a result, the transmission gear 77 also rotates in the reverse direction, and the operation member 91 is moved in the arrow b ₁ direction in FIGS. 6 and 10. Then, the operation protrusion 97 of the base 4
Is the lower first horizontal portion 9 as the operating member 91 moves.
8a to the second horizontal portion 98 on the upper side through the inclined portion 98c.
Move to b. As a result, the base 4 via the operation protrusion 97 supports the support portion 82 that constitutes the support mechanism 80 of FIG.
5 and 10 with the support shaft 81 supported by
It rotates in the direction of the middle arrow a ₂ . As a result, the disc table 8 arranged on the base 4 is moved to the disc tray 20.
Through the opening 24, engages with the center hole 2a of the optical disk 2 and is slightly lifted from the disk holding portions 22 and 23, and is rotatably held by the clamping plate. . Then, the spindle motor 7 constituting the disk rotation drive mechanism 5 is driven to rotate the optical disk 2 so that the disk table 8 is kept constant, for example. At the same time, the optical pickup device 6 emits a light beam from the semiconductor laser. This light beam is converged by the objective lens 9, irradiated onto the optical disc 2, and reflected by the reflection film. The optical pickup device 6 detects the returning light beam with the photodetector and reads the data. Further, the optical pickup device 6 is fed and operated along the guide shaft 12 by a feed mechanism having a motor 13 as a drive source.

When reproducing the optical disc 2,
The engagement protrusion 99 of the operation member 91 moves from the second inclined portion 41b of the reproduction operation groove 41 to the vertical portion 41e. As a result, the disc tray 20 is slightly pulled in, and the rack gear 36 is not in mesh with the drive gear 78.
Therefore, the disc tray 20 is positioned at the storage position only by the engagement of the third guide protrusion 63 with the third guide groove 40. Since the disc tray 20 loses the pressing force of the drive gear 78 to press the rack gear 36, the disc tray 20 is more likely to rattle compared to the housed state of the disc tray 20 before reproduction shown in FIG.
Since the optical disc 2 is chucked during the reproduction of the optical disc 2, the problem that the disc tray 20 is easily rattled does not occur.

When the reproduction of the optical disk 2 is completed,
The drive motor 71 that constitutes the transport mechanism 70 is driven to rotate in the normal direction, and the transmission gear 77 is rotated in the normal direction, so that the operation member 91 in which the rack gear 94 is meshed with the base gear portion 77c is inserted into the guide hole 95. Guided by the engaged guide piece 96, it moves in the direction of arrow b _{2 in} FIGS. 6 and 10.
As a result, the operation protrusion 97 of the base 4 becomes
10 moves from the upper second horizontal portion 98b to the lower first horizontal portion 98a via the inclined portion 98c, and the base 4 moves to the support mechanism 80 of FIG.
5 is rotated in the direction of the arrow a _{1 in} FIGS. 5 and 10 with the support shaft 81 supported by the support portion 82 constituting the above as a rotation fulcrum, and the state shown in FIG. Further, the engagement protrusion 99 of the operation member 91 also returns from the vertical portion 41e of the reproduction operation groove 41 to the second inclined portion 41d, and the drive gear 7
8 meshes with the front end of the rack gear 36.

Next, the operation of pulling the disc tray 20 out of the outer casing 3 from the storage position of the disc tray 20 will be described with reference to FIG.

For example, when the eject button of the optical disk 2 is pressed by the user, the drive motor 71 constituting the transport mechanism 70 is driven to rotate in the normal direction, and the drive gear 78 meshed with the rack gear 36 of the disk tray 20 is rotated in the normal direction. (The arrow e ₁ direction in FIG. 6) rotates. Then, the disc tray 20 in which the rack gear 36 meshes with the drive gear 78 gradually starts to move linearly in the direction of arrow c _{1 in} FIG. 9. Then, as shown in FIG. 15, first, the third guide groove 40 on the side of the disc tray 20 is moved linearly in the direction of arrow c _{1 in} FIG.
The engagement state with the third guide protrusion 63 provided on the No. 3 is released. At this time, the widened portion 37 of the first guide groove 37
The guide projection 56 on the tip side is still engaged with a,
The reference width portion 37b of the first guide groove 37 is in a state in which the guide protrusion 37b on the base end side is engaged. At this time,
The drive gear 78 moves in the forward direction, that is, the arrow e _{1 in} FIG.
Rotate in the direction. This allows the disc tray 20
15 is centered on the guide protrusion 57 on the base end side by the difference between the width of the first guide groove 37 and the guide protrusions 56, 57.
Try to rotate in the direction. However, the guide protrusion 5
6, 57 contact the inner surface 38 of the first guide groove 37. Therefore, when the disc tray 20 moves, the guide protrusions 56 and 57 are guided by the inner surface 38.

At this time, the engaging projection 99 of the operating member 91 constituting the operating mechanism 90 is rotated by the transmission gear 77 in the forward direction, so that the operating member 91 is indicated by an arrow b _{1 in} FIGS. 6 and 10. In the second direction of the regeneration operation groove 41 by moving in the direction.
It moves in the direction of the second straight line portion 41c via the inclined portion 41d. When the engaging projection 99 moves from the second inclined portion 41d to the second straight portion 41c, the rack gear 9 of the operating member 91 is moved.
4 and the engagement state between the transmission gear 77 and the base gear portion 77c are released. Then, the operation member 91 has the engagement protrusion 99.
Does not move in any direction when moving the second straight portion 41c.

Further, when the drive motor 71 constituting the transport mechanism 70 is continuously driven in the normal direction, the drive gear 78 rotates in the direction of arrow e _{1 in} FIG. 16, and the disc tray 20 moves, as shown in FIG. Further, it moves in the direction of arrow c ₁ in FIG. Then, the guide protrusions 56 and 57 that form the first guide portion 51 are located in the reference width portion 37 b of the first guide groove 37. For example, as shown in FIG. 4 above, when the first guide groove 35 is formed into a barrel shape and the first guide groove 35 is curved, the disc tray 20 has a curved line that follows the inner surface 38 of the first guide groove 37. Draw and move in the direction of arrow c ₁ in FIG. The operation member 91 that constitutes the operation mechanism 90 is
The engagement protrusion 99 does not move because it moves the second straight portion 41c of the regeneration operation groove 41.

When the drive motor 71 constituting the transport mechanism 70 is further driven in the normal direction, the disk tray 20 is rotated in the outer casing 3
The insertion / removal opening 29 of the disk holder 2 is completely pulled out,
The optical discs 2 held by the optical discs 2 and 23 can be exchanged. As shown in FIG. 17, when the disc tray 20 is pulled out to the outside of the outer casing 3, the guide protrusions 56 and 57 that form the first guide portion 51 have the first guide groove 37.
Is located in the reference width portion 37b. The reference width portion 37b is
The width is narrower than that of the widened portion 37a. Therefore, the disc tray 20 can reduce the rattling caused by the gap between the guide protrusions 56 and 57 and the first guide groove 37. As shown in FIG. 17, the operation member 91 is located at a position where the engagement projection 99 is engaged with the first inclined portion 41b or the first straight portion 41a of the reproduction operation groove 41. The drive motor 71 that constitutes the transport mechanism 70 is stopped when the detection switch is turned on by the moving disk tray 20, for example.

In this state, the user can move the disc tray 2
The optical disk 2 can be gripped with fingers through the cutouts 25, 25 provided on both sides of 0, and the optical disk 2 can be exchanged.

The operation of retracting the disc tray 20 into the outer casing 3 from the state shown in FIG. 17 is the reverse of the above description. That is, when the user presses the eject button or the like of the optical disc 2 again, the drive motor 71 that constitutes the transport mechanism 70 is driven in the reverse direction. Then, the drive gear 7
17 rotates in the direction of arrow e ₂ in FIG. 17, and linearly moves the disc tray 20 in the direction of arrow c _{2 in} FIG. At this time, the disc tray 20 has the first guide piece 55 and the guide protrusions 56 and 57 engaged with the first guide groove 37 and the second guide protrusion 39 engaged with the second guide groove 39. It is guided by 63 and is linearly moved in the direction of arrow c ₂ in FIG. At the same time, in the operation member 90, the engagement protrusion 99 moves the second linear portion 41c in the direction of the second inclined portion 41d. As a result, the disc tray 20 is housed in the outer casing 3 as shown in FIG.

In the disc reproducing apparatus 1 configured as described above, the widened portion 37a is provided on the tip side of the first guide groove 37, and the guide protrusion is formed on the widened portion 37a at the storage position of the disc tray 20. By engaging 56, the disc tray 20 can be positioned and held at the regular storage position even when the first guide groove 37 is curved and formed. Specifically, the positioning of the disc tray 20 in the storage position is performed by the disc tray 20.
This can be done by engaging the third guide protrusion 40 on the frame 53 side with the third guide groove 40 on the side. That is, the inclination of the disc tray 20 can be made smaller or eliminated as compared with the conventional case. As a result, it is possible to prevent the appearance of the disc reproducing apparatus 1 from being deteriorated because the outer casing 3 and the decorative plate 27 that closes the insertion / removal opening 29 are flush with each other when the disc tray 20 is in the storage position. be able to. Further, the optical disc 2 held by the disc holding portions 22 and 23 is held at a predetermined position when the disc tray 20 is accurately positioned, and the optical disc 2 and the disc table 8 arranged on the base 4 are held. The disc plate 8 is securely chucked by a clamping plate arranged to face the disc table 8.

When the disc tray 20 is pulled out from the storage position, the disc tray 20 is moved by the rack gear 36.
It is moved by the drive gear 78 meshed with. At this time, the disc tray 20 moves while the guide protrusions 56 and 57 forming the first guide portion 51 are in contact with the inner surface 38 of the first guide groove 37 by the pressing force of the drive gear 78. This can prevent rattling when the disc tray 20 moves.

Even when the first guide groove 37 is curved due to distortion during cooling when the disc tray 20 is integrally formed of synthetic resin by injection molding, the disc tray 20 can be stored. Position, the first guide groove 37
By allowing rattling of the widened portion 37a on the front end side with respect to the guide protrusion 56, and engaging the third guide protrusion 63 with the third guide groove 40 on the back side opposite to this, The tilt in the horizontal direction is eliminated, and it is reliably positioned and held in a normal position.

The disk reproducing apparatus to which the present invention is applied has been described above with reference to the drawings, but the present invention is not limited to this. For example, in the above example, the disc tray 20 that holds the optical disc 2 as a recording medium holding member.
Although the disk reproducing apparatus 1 using the above has been described, the recording medium is an optical disk, a magneto-optical disk, a disk cartridge using a magnetic disk or the like as a recording medium, a tape cartridge using a magnetic tape as the recording medium, or a semiconductor memory as the recording medium. It may be a recording medium cartridge such as an IC card to be used. In this case, the recording medium holding member is a member that holds such a recording medium cartridge.

[0079]

According to the present invention, the guide groove provided along the moving direction of the recording medium holding member is formed wide on the front end side, and when the recording medium holding member is at the storage position, this wide portion is formed. By engaging the guide protrusion with the guide protrusion, the tolerance of the rattling of the recording medium holding member in the horizontal direction increases. Therefore, for example, the recording medium holding member can surely be positioned and held at the regular position without rattling by engaging the guide protrusion with the further guide groove on the back side. . This allows for playback
The reproducing mechanism that reads data from the recording medium can surely hold the recording medium in a reproducible state.

Further, since the recording medium holding member is positioned and held at the regular position, the decorative plate which is a part of the outer casing attached to the recording medium holding member is flush with the other areas and has an external appearance. Can be prevented from becoming worse.

[Brief description of drawings]

FIG. 1 is a perspective view of a disc reproducing apparatus to which the present invention is applied.

FIG. 2 is a perspective view of a disc tray to which the present invention is applied as seen from above.

FIG. 3 is a perspective view of the disc tray as viewed from below.

FIG. 4 is a plan view illustrating a barrel-shaped disc tray.

FIG. 5 is a perspective view illustrating a guide mechanism of the disc tray, a transport mechanism, and a rotation operation mechanism of the base.

FIG. 6 is a plan view illustrating the disc tray, the guide mechanism, the transport mechanism, and the rotation operation mechanism of the base, showing a state in which the disc tray is housed in an outer casing.

FIG. 7 is a cross-sectional view illustrating a first guide portion and a second guide portion that form a guide mechanism.

FIG. 8 is a plan view illustrating a relationship between a guide protrusion and a first guide groove that form a first guide portion.

FIG. 9 is a cross-sectional view illustrating the relationship between a third guide groove and a third guide protrusion.

FIG. 10 is a perspective view illustrating an operation mechanism for rotating a base having a reproducing unit.

FIG. 11 is a plan view illustrating a stored state of a conventional disc tray.

FIG. 12 is a diagram illustrating the inclination of the disc tray at the storage position.

FIG. 13 is a diagram illustrating a tilted state of the disc tray at the storage position.

FIG. 14 is a diagram showing the positional relationship between the operation protrusion of the operation member and the reproduction operation groove of the disc tray when the disc tray is in the storage position.

FIG. 15 is a plan view showing a state in which the engagement state between the third guide protrusion on the frame side and the third guide groove is released when the disc tray is pulled out.

16 is a plan view showing a state where the disc tray is further pulled out from the state of FIG.

FIG. 17 is a plan view showing a state where the disc tray is completely pulled out.

[Explanation of symbols]

1 disc reproducing device, 2 optical discs, 3 outer casing, 4
Base, 5 disc rotation drive mechanism, 6 optical pickup device, 20 disc tray, 21 tray body,
22 first disk holding portion, 23 second disk holding portion, 27 decorative plate, 28 mounting piece, 29 insertion / removal opening, 3
1 mounting groove, 34 1st guide rail, 35 2nd guide rail, 36 rack gear, 37 1st guide groove, 37a widening part, 37b reference width part, 38 inner surface, 39 2nd guide groove, 40 Third guide groove, 50
Is a moving mechanism, 51 1st guide part, 52 2nd guide part, 53 frame, 54 1st support piece, 55
1st guide piece, 56, 57 guide protrusion, 58 1st
Engagement piece, 59 second support piece, 61 second guide piece, 62 second engagement piece, 63 third guide protrusion, 7
0 transport mechanism, 71 drive motor, 77 transmission gear, 77
a transmission gear part, 77b tray gear part, 77c base gear part, 78 drive gear, 90 operation mechanism, 94
Rack gear, 97 operation protrusion, 99 engagement protrusion

Claims (12)

[Claims] 1. A main body section provided with a recording medium holding section for holding a recording medium, a reading position for reading data recorded on the recording medium held by the recording medium holding section, and the recording medium holding section. A guide portion provided on both sides parallel to the moving direction of the main body portion that guides the main body portion when linearly moving the main body portion over the ejection position for ejecting the held recording medium, The main body portion and the guide portion are integrally formed of synthetic resin, and one of the guide portions conveys when the main body portion is moved between the read position and the take-out position. A rack gear with which the drive gear on the device side is meshed and a guide groove with which the guide projection on the transport device side is engaged are formed along the moving direction of the main body portion, and the guide groove has another end on the tip side. Than part Recording medium holding device is formed in a wide. 2. The rack gear is formed inward along the movement direction, and the guide groove is formed outside the rack gear with an inner surface along the movement direction as a reference surface for movement. The recording medium holding device according to claim 1, wherein the front end side is formed so as to become wider toward the outer side with respect to the inner side surface. 3. In the middle of the back side of the main body in the width direction,
The recording according to claim 1, wherein a guide groove is provided to be engaged with the further guide protrusion on the side of the transport mechanism, and the guide groove is engaged with the further guide protrusion when in the reading position. Media holding device. 4. The recording medium holding device according to claim 1, wherein a decorative plate which constitutes a part of an outer casing of the reproducing device and closes an insertion / removal opening is attached to a front surface portion of the main body portion. 5. A recording medium holding unit for holding a recording medium is provided, a read position for reading data recorded on the recording medium held by the recording medium holding unit, and a recording held by the recording medium holding unit. A recording medium holding member made of a synthetic resin, the guide portions of which are linearly moved across the ejection position for ejecting the medium, are provided on both sides parallel to the movement direction, and the reading position of the recording medium holding member. Any one of the recording medium holding members includes guide means for guiding the movement of the recording medium holding member to the take-out position, and conveying means for moving the recording medium holding member to the read position and the take-out position. A rack gear and a guide groove are formed in one of the guide portions along the moving direction, and the guide groove is formed such that the tip end side is wider than the other portions, and the guide means is The transport means has a drive gear meshed with the rack gear, and the transport means has a guide protrusion engaged with the guide groove. A conveyance device for moving and operating the recording medium holding member with which the guide protrusion is engaged, between the read position and the take-out position. 6. The rack gear is formed inward along the moving direction, and the guide groove is formed outside the rack gear with an inner surface along the moving direction as a reference surface for movement. The front end side is formed so as to widen toward the outer side with reference to the inner surface, and the conveying means moves the recording medium holding member by engaging the drive gear with the rack gear. Item 5. The transfer device according to item 5. 7. The guide means has a further guide protrusion engaging with a further guide groove provided in the widthwise center of the rear surface side of the recording medium holding member, and the guide protrusion has
The transport device according to claim 5, wherein when the recording medium holding member is at the read position, the recording medium holding member is engaged with the further guide groove to regulate the read position. 8. The transport device according to claim 5, wherein a decorative plate which constitutes a part of an outer casing of the reproducing device and closes an insertion / removal opening is attached to a front surface portion of the recording medium holding member. 9. A reproducing apparatus comprising a conveying device for moving a recording medium between a reading position for reading data recorded on the recording medium and an extracting position for taking out the recording medium, wherein the conveying device. Is provided with a recording medium holding unit for holding the recording medium, and linearly extends between the reading position of the recording medium held by the recording medium holding unit and the take-out position of the recording medium held by the recording medium holding unit. A recording medium holding member made of a synthetic resin, the guide portion for moving of which is provided on both sides parallel to the moving direction, and guide means for guiding the movement of the recording medium holding member between the read position and the take-out position. And a conveying means for moving and operating the recording medium holding member between the reading position and the take-out position. A rack gear and a guide groove are formed along the guide groove, and the guide groove is formed such that the tip end side is wider than the other portion, and the guide means has a guide protrusion engaged with the guide groove. At the same time, the conveying means has a drive gear meshed with the rack gear, and the conveying means has the recording medium holding member in which the guide protrusion is engaged with the guide groove by rotating the drive gear. A reproducing device for moving and operating between the read position and the take-out position. 10. The rack gear is formed inward along the moving direction, and the guide groove is formed on the outer side of the rack gear with an inner surface along the moving direction as a reference surface during movement. The front end side is formed so as to widen toward the outer side with reference to the inner surface, and the conveying means moves the recording medium holding member by engaging the drive gear with the rack gear. Item 10. The reproducing apparatus according to Item 9. 11. The guide means has a further guide protrusion engaging with a further guide groove provided in the widthwise middle of the back side of the recording medium holding member, and the guide protrusion has When the recording medium holding member is at the reading position,
10. The reproducing apparatus according to claim 9, wherein the reproducing position is regulated by engaging with the further guide groove. 12. The front surface of the recording medium holding member includes:
The playback device according to claim 9, further comprising a decorative plate that constitutes a part of an outer casing of the playback device and that closes an insertion / removal opening.