JPS63300480A - Disk player - Google Patents

Abstract

PURPOSE:To reduce the number of used parts of a disk player, by causing a pivot which is passed through one of paired tray carriers from its upper surface to its lower surface to support a chuck plate for small-diameter disk in a state where the chuck plate can move in the vertical direction. CONSTITUTION:A rod-like pivot 112 is perpendicularly provided downward on a tray carrier 80 side of the lower surface of a chuck plate 110 for small- diameter disk. The pivot 112 is loosely passed through the tray carrier 80 in a vertically movable state. Since driving devices 33 and 34 for small-diameter disk are retreated to the tray carrier 80 side when a large-diameter disk is reproduced, the pivot 112 is brought into contact and locked with the upper surface of the moving body 32 of the driving devices 33 and 34. Therefore, the chuck plate 110 for small-diameter disk does not descend and the chuck of the chuck plate 110 is not brought into contact with the large-diameter disk.

Description

[Detailed description of the invention] The invention will be explained in the following order.

A. Industrial field of application B0 Overview of the invention C1 Prior art 0 Problems to be solved by the invention E9 Means for solving the problems F1 Effects G. Examples G1. Overall configuration of the disc player (Fig. 3, Fig. 4,
(Figure 9) Gt, disk tray configuration (Figure 2) Gs, LD coarse drive unit configuration (Figures 3 and 4) G4. Configuration of CD drive device (Figs. 1 and 4).

(Fig. 1θ, Fig. 11) Gs, CD drive mechanism (Fig. 1, Fig. 4, Fig. 11) Gs, configuration of optical pickup (Fig. 1, Fig. 4).

(Fig. 12, Fig. 13) C7° Optical pickup feeding mechanism (Fig. 4, Fig. 12) Go, configuration of one tray carrier (Fig. 4, Fig. 5,
(Fig. 6) Go, configuration of the other tray carrier (Fig. 1, Fig. 4,
(Fig. 6, Fig. 20) G Io, Structure of tray transport body (Fig. 3, Fig. 6) G
,,,Configuration of chuck plate for LD (Fig. 3).

Fig. 6) G + t, configuration of the chuck plate for CD (Fig. 6)
figure.

Figure 9) G 13. Configuration of carrier drive mechanism (Figures 4 and 6) G 14. Configuration of differential gear (Fig. 4, Fig. 5) G Is
, Configuration of servo member (Figures 1 and 4) G +e, Configuration of guide member (Figures 6, 7, and 8) Gl'1. Configuration of drive mechanism of guide member (Fig. 4) G I
S. Operation of the embodiment (Figs. 14 to 25) H0 Effect of the invention A. Industrial application field This invention is applicable to an optical video disc (hereinafter abbreviated as LD) as a large-diameter disc and as a small-diameter disc. The present invention relates to a disc player for LD/CDI (a so-called compatible player) that can selectively load and play two types of discs, such as a compact disc (hereinafter abbreviated as CD).

B1 Summary of the Invention This invention provides a system for installing an LD (large diameter disc) or a CD (small diameter disc) within the player main body by horizontally inserting and removing a disc tray from an opening formed in the front surface of the player main body. The LD/CD is transported to either one of the LD and CD drive devices, and the optical pickup is moved in the radial direction of the rotating disk attached to the one drive device to reproduce the disk.
In a disc player that also serves as a CD, the disc tray is provided on both sides of the player main body so as to be movable in the vertical direction.

a pair of tray carriers to support, and chuck plates for LD and CD that are provided so as to be able to follow the vertical movement of the pair of tray carriers and that cause each of the drive devices to hold the LD and CD via each chuck; , a carrier drive mechanism that is connected to the pair of tray carriers and moves the pair of tray carriers up and down, and the CD chuck plate is placed on the upper surface of one of the pair of tray carriers. and is supported so as to be movable up and down via a spindle penetrating downward from its top surface, and the CD drive device is disposed so as to be movable below the spindle when loading the LD, The lower end of the support shaft is brought into contact with and locked to the drive device, and the C
By providing a stopper portion that prevents the D chuck plate from moving downward, it is possible to reliably prevent the chuck of the CD chuck plate from coming into contact with the LD during playback of the LD without increasing the number of parts. It has been made possible.

C0 Conventional technology Two types of discs, a large-diameter optical video disc (LD) and a small-diameter compact disc (CD), can be selectively loaded into the player body and played.
2. Description of the Related Art Disk players that can be used for both D/CD (also referred to as mutually compatible players) are known.

This will be explained in detail with reference to FIGS. 26 to 30. Reference numeral 200 is a disc player for both LD/CD, and an opening 2 formed on the front surface of a type 1 player body 201.
A disc tray 205 is disposed to be horizontally removable from the player main body 201 and selectively transports the LD 203 or CD 204 into the player main body 201;
Spindle motor (drive device) 2 for the LD that rotates the
09, and a rocking mechanism consisting of a rack, pinion, etc. (not shown) on the chassis 208 from the vertical position to approximately 9
A CD spindle motor (drive device) 210 that is tiltable by 0 degrees and rotates the CD 204, and a slide guide shaft 211 that is installed in parallel at a predetermined height from the top surface of the chassis 208 are driven by a drive (not shown). The optical pickup 212 is provided so as to be reciprocally movable by a mechanism and moves in the radial direction of the LD 203 or the CD 204 to read information therefrom.

Note that when the disc tray 205 is pulled out from the opening 202 of the player main body 201, as shown in FIG. When the disc tray 205 is stored in the player main body 201 by a loading mechanism (not shown), the CD carrier part 207
As shown in FIG. 27, the disk tray 205 is moved several times as much relative to the amount of retraction movement of the disk tray 205 by a drive mechanism including a rack, speed-up gear, etc. (not shown).
It is located at the rear of the disc tray 205 (at a predetermined CD playback position at the back of the player body 201).

When playing the LD 203, the disc tray 205 is moved to the player body 2 as shown by the solid line in FIG.
01 by the loading mechanism,
The LD 203 placed on the LD carrier part 206 of the disk tray 205 is connected to the turntable 213 of the spindle motor 209 and the LD chuck (clamper) 21.
4 and rotated at high speed, the L D 2
The information of 03 is read and reproduced by moving the LD 203 of the optical pickup 212 in the radial direction. In this case, the CD spindle motor 210 is tilted and does not get in the way when the optical pickup 212 moves in the radial direction of the LD 203.

When playing the CD 204, the disc tray 205 is moved downward in the same way as the L D 203, and the CD 204 placed on the CD horse carrier 207 of the disc tray 205 is moved as shown in FIG. The turntable 215 of the spindle motor 210 is vertically erected.
By holding the CD 204 in the CD chuck 216 and rotating it, the information on the CD 204 is transferred to the optical pickup 212.
The CD 204 is read and played by moving it in the radial direction.

D1 Problems to be Solved by the Invention However, in the conventional disc player 200, the second
As shown in Figure 8, the disk tray 205 is lowered and
When chucking the LD 203 between the D spindle motor 209 turntable 213 and the chuck 214, the CD chuck 216 tends to descend a little, and the LD 203 is thicker than the CD 204. Because the LD 203 is thick, when the LD 203 is played back, the LD 20
The CD chuck 216 came into contact with the CD chuck 216, which caused a problem. To solve this problem, it is conceivable to provide a stopper mechanism on the ceiling of the player main body 201 to prevent the CD chuck 214 from descending only when chucking the L D 203, but there is a limit to the space for installing the stopper mechanism. It is desired to develop a means to deal with this problem without increasing the number of parts.

Therefore, the present invention provides a disc player that can solve the above problems.

Means for Solving Problem E1 A player body having an opening formed on the front side, and a player body provided in the player body so as to be freely put in and taken out from the opening in the horizontal direction,
a disk tray for transporting a large-diameter disk or a small-diameter disk into the player main body; a large-diameter disk drive device provided in the player main body for rotating the large-diameter disk; A drive device for a small-diameter disk, which is provided so as to be movable back and forth so as to be separated from each other, and is provided so as to be movable back and forth between a small-diameter disk drive device that rotates the small-diameter disk, and each of the drive devices in the player main body, and which reads information on each disk. an optical pickup; a pair of tray carriers that are provided to be movable in the vertical direction with respect to both sides of the player body and that place and support the disc tray; and a pair of tray carriers that are provided to be able to follow the vertical movement of the pair of tray carriers. chuck plates for large-diameter disks and for small-diameter disks that allow the respective drive devices to hold the large-diameter disk and the small-diameter disk via respective chucks; and a carrier drive mechanism for vertically moving the small-diameter disk chuck plate, which is mounted on the upper surface of one of the tray carriers of the pair of tray carriers, and is mounted via a support shaft penetrating downward from the upper surface of the chuck plate. The drive device for the small-diameter disk is movably disposed below the spindle when loading the large-diameter disk, and the lower end of the spindle is placed in contact with the drive device. A stopper portion is provided to prevent the chuck plate for the small-diameter disk from moving downward by contacting and locking the chuck plate.

F1 effect When playing a large-diameter disc, the spindle of the chuck plate for the small-diameter disc comes into contact with and is locked to the stopper part of the drive device for the small-diameter disc, which is retracted below one tray carrier side. The chuck plate for small-diameter disks does not move downward, and the chuck of the chuck plate for small-diameter disks does not come into contact with the large-diameter disk.

G. Example Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

G1. Overall configuration of the disc player (Fig. 3, Fig. 4,
Figure 9) 1 in Figure 1 is a disc player that selectively loads and plays two types of discs: an optical video disc (LD) as a large-diameter disc and a compact disc (CD) as a small-diameter disc. LD that can
This is a so-called compatible player that can also be used for /CD.

This disc player 1, as shown in Fig. 4.9,
A player main body 2 having an opening 2a formed on the front surface, a disc tray 1O that is provided to be horizontally removable through the opening 2a and for transporting the LD or CD into the player main body 2, and a bottom surface of the player main body 2. an LD drive device 20 and a CD drive device 3o that are disposed on a chassis 3 disposed on the side and rotate the LD and CD;
A feeding mechanism 40 that reciprocates this CD drive device 30 toward the LD drive device 20 side, and these drive devices 20.
an optical pickup 50 that is movable back and forth between 30 and 30 and reads information on each of the LD and CD discs; A pair of tray carriers 70 and 80 are provided to be movable in the vertical direction, and on which the disk tray IO is placed and supported;
0.80, on which the disk tray 10 is placed, and when the pair of tray carriers 70.80 rises, the disk tray 10 is transported outward from the opening 2a. Tray transport body 90
and a chuck plate 100 for LD and a chuck plate 100 for CD, which are provided so as to be able to follow the up and down movement of the pair of tray carriers 70.80, and allow each drive device 20.30 to hold the LD and CD through each chuck. A chuck plate 110, a carrier drive mechanism 120 that is connected to the pair of tray carriers 70.80 and moves the pair of tray carriers 70.80 up and down, and a disk tray lO on the pair of tray carriers 70.80. A differential gear 130 as a differential device that is connected to each other and moves the disk tray 10 in the horizontal direction, and the optical pickup 5
0 and a skew servo member 140 as a servo member that causes the optical pickup 50 to follow the curve of the surface of each disk held by each drive device 20.30, and a pair of tray carriers of the chassis 3. 7
The control cam plate 150 is rotatably supported on the side of the opening 2a between 0.80 mm and is generally composed of a control cam plate 150 as a guide member that controls and interlocks the carrier drive mechanism 120, the differential gear 130, and the skew servo member 140, respectively. has been done.

In addition, code 8 indicates a large diameter LD with a diameter of 30 cm, and 9 indicates a diameter of 1
Each CD is shown with a small diameter of 2 cm.

G2. Structure of Disk Tray (FIG. 2) The disk tray IO is made of synthetic resin and is formed into a rectangular plate shape. A large-diameter mounting portion 11 for guiding the LD is formed in an annular concave shape from approximately the center of the upper surface of the disk tray to both end lines. This large-diameter mounting portion 11 includes a large-diameter recess 11a formed to be slightly larger than the large-diameter (30 cm diameter) LD8, and a medium-diameter recess zb formed to be slightly larger than the medium-diameter (diameter 20 am) LD. It has concentric circular brackets in the form of steps. Cutouts 12 and 12 for taking out the large-diameter LD 8 are formed at both ends of the large-diameter mounting portion 11.

Also, one side of the front side of the disk tray IO (right side in the figure)
A small-diameter mounting section 13 for guiding a CD is formed at a corner side of the disc and at a position approximately accommodated within the large-diameter mounting section 11. This small diameter mounting portion 13 has a small diameter (12 cm+ diameter) C
It has a small diameter recess 13a formed one size larger than D9, and a minimum diameter recess 13b formed one size larger than the minimum diameter CD (diameter 80al) in a concentric and stepped shape. Recesses 14, 14 for taking out the small diameter CD 9 are formed at the side end of the small diameter mounting portion 13 on the notch 12 side of the large diameter mounting portion 11 and at the side end opposite thereto.

A diagonal notch 1 for moving the optical pickup 50 from the center of the large-diameter mounting section 11 to the one corner side.
5 is formed. When the disc tray 10 is housed in the player main body 2, the CD driving device 30 and optical pickup 50 are disposed so as to be movable back and forth along the notch 15. Further, as shown in Fig. 3.16, a long slide guide groove 16 is formed on the right side of the disc tray 10 in the figure (small diameter mounting section 13 side) from the front to the rear. , on the side opposite to this (
A housing portion 17 having a U-shaped cross section for housing the tray transport body 90 is integrally formed at the bottom of the left side in the figure. A rack 18 is provided on the inner side of the accommodating portion 17 on the side of the cutout portion 15 . Furthermore, a positioning guide hole 19 is formed at the rear left side of the disc tray 10. This guide hole 19
is fitted into a pin 6 erected at a predetermined position at the rear of the chassis 3 while the disc tray 10 is being loaded into the player body 2 . Thereby, the disc tray 10 is reliably positioned at a predetermined loading position within the player body 2.

Configuration of Gs, LD drive device (Fig. 3.4) The LD drive device 20 is located at a position corresponding to the center position of the large-diameter mounting portion 11 when the disk tray 10 of the chassis 3 is housed (drawn). The spindle motor 21 is embedded in the LD 8 and rotates the LD such as the LD 8 at high speed, and the turntable 23 is provided integrally with the outer circumference of the upper end of the spindle 22 of the spindle motor 21 and on which the LD is placed. ing.

G4. Configuration of CD drive device (Fig. 1, Fig. 4, Fig. 10)
(Fig. 2) The drive device 30 for CD drives the disc tray lO when stored.
1 arranged along the position of the rear side edge of the diagonal notch 15 of
A block-shaped transfer body 32 that penetrates a book guide shaft 31 and slides back and forth; a spindle motor 33 that is fixed to the front bottom of the transfer body 32 and rotates a CD such as a CD9; The CD is fixed to a spindle 33a protruding from the upper surface of the transfer body 32.
a turntable 34 on which the
The other end is supported by a pin at the rear of the bottom of the feed mechanism 4, which will be described later.
It is composed of a substantially T-shaped plate-shaped connection link 35 that is pivotally supported by a pin at one end of a plate-shaped rack 41.

Both ends of the guide shaft 31 are fixed to a pair of brackets 3B, 3B protruding from the chassis 3.

The pair of brackets 3B, 3B are connected to a rear longitudinal side edge 3a of an opening 3A having approximately the same shape as the notch 15 formed in the chassis 3 at a position corresponding to the diagonal notch 15 of the disc tray lO when stored. Located on both sides. A rail 36 having a U-shaped cross section is fixed at the stroke position of the transfer body 32 on the rear side edge 3a. At the forward stroke end position of the transfer body 32 on this rail 36, the chassis 3
The hook-shaped tip 37a of the adjustment plate 37, which is pivotally supported by a pin, is protruded. Further, a roller 39 rotatably supported by the lower end of a shaft 38 vertically protruding downward from the center of the bottom surface of the transfer body 32 is fitted into the rail 36 .

Note that a tapered portion 32a is formed on the side surface of the central portion of the transfer body 32 on the tray carrier 80 side.

Furthermore, the transport body 32 moves back and retreats to the tray carrier 80 during playback of the LD.

Configuration of the feeding mechanism of the GS and CD drive device (Fig. 1).

(FIGS. 4 and 11) The feeding mechanism 40 that reciprocates the CD drive device 30 along the guide shaft 31 is a rack that slides on a block 3C fixed on the chassis 3 in parallel to the guide shaft 31. 41, a motor 42 that drives the rack 41, and a speed reduction device 43 that is provided between the rack 41 and the motor 42 and that reduces the driving force of the motor 42 and transmits it to the rack 41.

The rack 41 is formed into a long rectangular plate shape and has a long hole 41a in the center thereof.

Each shank portion of a pair of screws 44 and 44 screwed into the block 3C is inserted into this elongated hole 41a. The protruding piece 41b integrally bent at one end of the rack 41 on the guide shaft 31 side and the midway portion 35b of the connecting link 35 are provided to press the CD drive device 30 toward the CD loading position. A biasing coil spring (elastic member) 45 is interposed. Further, a plurality of gear portions 41c are formed on the other end edge of the rack 41.

The speed reduction device 43 meshes with a pair of brackets 46.46 fixed at a predetermined position on the chassis 3, a worm gear 47 rotatably supported between the pair of brackets 46.46, and the worm gear 47. The binion 48 has a large diameter gear part 48a and a small diameter gear part 48b that meshes with the gear part 41c of the rack 41, and is rotatably supported by the chassis 3. A belt 49 is stretched between a pulley 42a fixed to the rotating shaft of the motor 42 and a pulley 47a fixed to one end of the worm gear 47.

Gs, configuration of optical pickup (Fig. 1, Fig. 4).

(FIGS. 12 and 13) The optical pickup 50 includes a substantially U-shaped block-shaped transfer body 51 whose one end penetrates the guide shaft 31 and slides back and forth, and a threaded portion 52a on the one end of the transfer body 51. The pickup main body 53 is supported rotatably in the vertical direction via a formed support shaft 52. A plate-like rack 54 is fixed to the upper surface of one end of the transfer body 51 with a screw 55, and a roller 57 is fixed to the side surface of the other end via a shaft 56 projecting perpendicularly to the side surface. It is rotatably supported. This roller 57 rolls on the front side edge 3b of the opening 3A of the chassis 3 so that the transport body 51 and the pickup main body 53 are kept in a horizontal state.

On the top surface of the pickup main body 53, there is an objective lens 58 that irradiates and focuses a laser beam on the pits of each disk of LD and CD, and a detection light that detects the inclination of the disk surface due to warping or the like with respect to the optical axis. A skew lens 59 is provided for irradiating the light. Further, on the side surface of the pickup main body 53 on the roller 57 side, a support pin 60 is projected perpendicularly to the side surface. A coil spring 61 is interposed between the support pin 60 and the other end 51a of the transfer body 51. Due to the tensile force of this coil spring 61,
The pickup main body 53 is always urged to rotate upward about the support shaft 52 and maintain a horizontal state.

Incidentally, as shown in FIG. 12, the pickup main body 53 is
The transfer body 51 and the pickup body 53 pass through the support shaft 52.
The rack is pressed against the roller 57 by the elastic force of a spring washer 62 interposed between the rack and the rack. The position can be finely adjusted by horizontally moving to the 54 side.

G? , Configuration of the feeding mechanism of the optical pickup (FIGS. 4 and 12) The feeding mechanism 63 for reciprocating the optical pickup 50 along the guide shaft 31 between the LD rough drive device 20 and the CD drive device 30 is located in the upper part. A pinion 64 is rotatably supported by the chassis 3 and has a small diameter gear part 64a meshing with the rack 54 and a large diameter gear part 64b formed integrally with the small diameter gear part 64a at the lower part, and the pinion 64 at the lower part. A large-diameter driven pulley 65 is rotatably supported by the chassis 3 and has a small-diameter gear portion 65a that meshes with a large-diameter gear portion 64b of the chassis 3. The motor 66 has a small-diameter drive pulley 67 fixed to a shaft 66a protruding from the upper surface of the motor 3, and a belt 68 is stretched between the drive pulley 67 and the driven pulley 65 and rotates the driven pulley 65. There is.

Gs, configuration of one tray carrier (Fig. 4, Fig. 5,
(FIG. 6) A metal plate-shaped tray carrier 70 located on the left side of the figure is formed into a 5-shape with a bottom piece 71 and an upright piece 72 bent at right angles.

A pair of engagement pins 73 are provided at the front and rear of the lower surface of the bottom piece 71.
．． 73 protrudes perpendicularly to the lower surface. The pair of engagement pins 73, 73 are inserted into a pair of cylindrical portions 3C, 3C that are formed to stand vertically from above to below at predetermined positions on the chassis 3, and move up and down. There is. Further, a long rail 74 having a substantially C-shaped cross section is fixed to the upper surface of the bottom piece 71. Furthermore, a protruding piece 71a that rotatably supports a differential gear 130, which will be described later, is protruded from the inside of the front part of the bottom piece 71.

A pair of engagement pins 76 and 77 are provided on the front and rear sides of the outer surface of the upright piece 72 to protrude perpendicularly to the outer surface. Further, a pair of plate support pieces 72a, 72a are formed at the upper center of the upright piece 72 to protrude so as to be bent perpendicularly to the inner surface thereof and to face each other. Round holes 78 and 79 are formed in the pair of plate support pieces 72a and 72a, respectively.

Gs, configuration of the other tray carrier (Fig. 1, Fig. 4,
(FIGS. 6 and 20) A metal plate-shaped tray carrier 80 located on the right side of the figure is formed into an inverted shape with a bottom piece 81 bent at right angles and an upright piece 82. 70 and are facing each other at the same height with a predetermined spacing therebetween.

A pair of engagement pins 83 are provided at the front and rear of the lower surface of the bottom piece 81.
．． 83 protrudes perpendicularly to the lower surface. The pair of engagement pins 83.83 are inserted into a pair of cylindrical portions 3D, 3D formed to stand up vertically from above to below at a predetermined position of the chassis 3, so that they can move up and down. ing. Furthermore, a guide 84 made of synthetic resin and having a convex cross section is fixed to the upper surface of the bottom piece 81 and the inner surface of the upright piece 82.

A protrusion 84a is formed at the center of the inner side of the guide 84 to protrude in the longitudinal direction. This protrusion 84a fits into the slide guide groove 16 of the disc tray 10, so that the disc tray 1O slides on the upper surface of the bottom piece 81 along the protrusion 84a of the guide 84. Further, a pair of cylindrical guide portions 84b and 84c are vertically integrally formed on the front side of the upper surface of the guide 84.

Furthermore, a rectangular through hole 85 is formed on the side of the upright piece 82 at the center of the bottom piece 81 and the guide 84, into which a convex edge 103 that functions as a switch operation lever of a chuck plate 100 for LD, which will be described later, is inserted. It is.

A pair of engagement pins 86 and 87 are provided on the front and rear sides of the outer surface of the upright piece 82 to project perpendicularly to the outer surface. Further, concave notches 82a and 82b are formed in the center and front portions of the upper end of the upright piece 82, respectively. A CD chuck plate 110, which will be described later, is placed between the cylindrical guide portions 84b and 84c on the inner surface of the upright piece 82.
An adjustment lever 88 for correcting the difference in thickness between D and CD is pivotably supported upwardly by a pin. An engagement pin 89 placed in the notch 82b on the front side is vertically fixed to the tip side of the adjustment lever 88.

G. , Structure of the tray transport body (FIGS. 3 and 6) A tray is mounted on the rail 74 fixed to the left tray carrier 70 to transport the disc tray 10 to the outside from the opening 2a of the player body 2. It houses the transport body 90. This tray transport body 90 has a flat portion 9 with a flat top.
1 and both side portions 92° 92 extending downward from both side ends of this flat portion 91 form a long length having a substantially C-shaped cross section. An L-shaped bracket 93 is fixed to the front part of the flat part 91 of the transfer body 90, and a mounting hole 91a is fixed to the rear part of the bracket 93.
It is formed. These brackets 93 and mounting holes 91
The disk tray 10 is fixed to a by screws (not shown).

Furthermore, approximately U-shaped linear bearings 95 having a plurality of steel balls 94 arranged on both sides are interposed between both sides 92.92 of the tray transfer body 90 and both sides of the rail 74. The tray transport body 90 can be smoothly reciprocated with respect to the rails 74.

G, , L D configuration of chuck plate (Fig. 3).

(Fig. 6) The chuck plate 100 for LD is formed into a rectangular shape by a thin metal plate, and the longitudinal side edges 101
, 102 are formed by vertically bending upward, and
The edge portion 103 on the other side of the tray carrier 80 is vertically bent downward and protrudes in a substantially convex shape. A disk-shaped chuck 104 made of synthetic resin is rotatably supported at a position corresponding to the turntable 23 of the LD short drive device 0 at the center of the lower surface of the chuck plate 100. Further, both side edge portions 101 of the chuck plate 100
．． Engagement pins 105, 106, 107 are provided on one end side of the outer surface of the tray carrier 102 and on the outer surface of the edge portion 103 on the side of the tray carrier 80.
are protruding from each other. These side edge portions 101.1
The engagement pins 105 and 106 of 02 are fitted into a pair of round holes 78 and 79 of the one tray carrier 70 and are rotatably supported upward, and are engaged with the end edge 103 on the tray carrier 80 side. The matching pin 107 is connected to the tray carrier 80.
It is placed in the central notch 82a and can be detached.

As a result, the chuck plate 100 is provided so as to be able to follow the vertical movement of the pair of tray carriers 70 and 80, and when the chuck plate 100 is lowered, the LD is held (clamped) on the turntable 23 of the LD short drive device 0 via the chuck 104. ).

Further, when the pair of tray carriers 70 and 80 are lowered, the tip 103a of the edge portion 103 of the chuck plate lOO on the tray carrier 80 side can be freely inserted into the through hole 85 of the tray carrier 80. A switch 108 as a detection means is arranged on the bottom plate 3' below the through hole 85 and the chassis 3. This switch lO8
is connected to a microcomputer (not shown) having a controller. This microcomputer includes a display section 7 provided on the front side of the player body 2.
It is connected to. Therefore, the chuck plate 100
When the LD is lowered, the tip 103a of the edge portion 103 presses the switch 108 (ON operation), so that the LD is connected to the turntable 23 of the LD drive device 20 and the chuck 104 of the chuck plate 100. It is detected that the clamp state is a normal state. Further, when the chuck plate 100 is lowered and its tip 1031 does not press the switch lO8, it is detected that the LD clamp is in a mischuck state, and the microcomputer displays this on the display unit 7. At the same time, the microcomputer controls the drive of the LD rough drive device 20 and spindle motor 21 via the controller.

G, 2. Structure of a CD chuck plate (Fig. 1).

(FIG. 6) The chuck plate 110 for CD is formed into a tongue-like shape by a thin metal plate, and a chuck 111 is rotatably supported on the arcuate tip side of the lower surface thereof. This chuck 111 is composed of a disk-shaped magnet or the like, and is adapted to hold a CD between the chuck 111 and the turntable 34 of the CD drive device 30 during playback of the CD.

Further, a pair of rod-shaped support shafts 112 and 113 are vertically protruded downward from the tray carrier 80 side of the lower surface of the chuck plate 110. This pair of support shafts 112.
113 is loosely inserted into a pair of cylindrical guide portions 84b and 84c of the tray carrier 80, respectively, so as to be vertically movable. As a result, when playing a CD, the chuck plate 1
10 is placed on the adjustment lever 88 of the tray carrier 80, and is also placed on the upper surface of the transport body 32 of the CD drive device 30, with the one support shaft 112 retracted to the tray carrier 80 side during LD playback. This prevents the CD chuck plate 110 from moving downward.

Further, on the side edge of the chuck plate 110 on the LD chuck plate 100 side, an inverted-shaped locking protrusion 1 is provided.
14 is bent and formed. This locking protrusion 114 is
It is engaged with a concave notch 101a formed in the side edge 101 of the chuck plate 100 of the LD. Thereby, the horizontal state of the CD chuck plate 110 is maintained.

G, 3. Configuration of carrier drive mechanism (FIGS. 4 and 6) The carrier drive mechanism 120 that moves the pair of tray carriers 70 and 80 up and down includes a cam follower 121 provided at one end (front end) side and a control cam plate 15 to be described later.
0, the chassis 3 is engaged with the first cam groove 151 of
A pair of support pins 122 are provided upright at a predetermined distance from each other.
. A rotary lever 126 is rotatably supported by a rotary lever 126, and a rotary lever 126 is engaged with recesses 126a and 126b at both ends of the rotary lever 126 so as to be slidable back and forth on the chassis 3 in the same direction as the control lever 124, A pair of slide cam levers 127, 12 for vertically moving the pair of tray carriers 70, 80.
8, and locking protrusions 126 of the rotating lever 126 on both end sides.
c and one support pin 123 fixed to the chassis 3 at both ends, and the pair of tray carriers 70°80
It is made up of a coil spring (elastic member) 129 that biases to help the upward movement.

The control lever 124 is bent into a long, substantially rectangular shape with a step in the middle, and rectangular holes 124a, 12 are provided at the front end and rear side of the control lever 124.
4b is formed. The support pins 122 and 123 are inserted into the holes 124a and 124b, and the control lever 124 is reciprocated in the front-rear direction of the chassis 3 near the drive device 20 between the tray carrier 70 and the LD rough drive device 20. It can be arranged freely.

The slide cam lever 127 located on the left side of the figure is formed into an elongated rectangular plate shape and stands upright, and has an engagement pin 127a hanging downward in a recess formed at the rear of the bottom surface, and has an engagement pin 127a hanging downward from the inner surface thereof. Cam grooves 127b and 127d are formed at the front and rear sides of the body so as to gradually rise from the front end to the rear end.

This engaging pin 127a is engaged with a recess 126a on one end side of the rotating/(-126), and
The front and rear engagement pins 76 and 78 of the tray carrier 70 are engaged with the engagement pins 76 and 127d, respectively. The slide cam lever 127 is fixed to one end of the chassis 3 with screws or the like perpendicularly to the chassis 3, and the side plate 4 stands upright.
It is arranged so that it can freely slide back and forth in the front and rear directions on the chassis 3 while being restrained from standing upright.

The slide cam lever 128 located on the right side of the figure is formed into a long rectangular plate shape and stands upright, and has an engagement pin 128a hanging downward in a recess formed at the rear of the bottom surface. Cam grooves 128b, 128 are formed in the rear part of the side surface so as to gradually descend from the front end to the rear end.
c, 128d is formed. This engagement pin 128a is engaged with a recess 126b on the other end side of the rotating lever 126, and the front and rear engagement pins 86.88 of the tray carrier 80 are inserted into the front and rear cam grooves 128b, 128d. The engaging pins 107 of the LD chuck plate 100 are respectively engaged with the cam grooves 128c.

Further, a cam notch 128e is formed between the cam grooves 128b and 128c in the upper part of the slide cam lever 128, and is inclined in the same direction as the cam groove 128a. The engagement pin 89 of the adjustment lever 88 is engaged with the cam surface of the cam notch 128e.

The slide cam lever 128 is fixed to the other end of the chassis 3 with screws or the like perpendicularly to the chassis 3, and is restrained from standing by the side plate 5, which stands upright, so that it can freely slide back and forth in the front-rear direction on the chassis 3. It is arranged in

G14. Configuration of Differential Gear (FIGS. 4 and 5) A vertically long cylindrical differential gear 130 that reciprocates the disk tray 10 in the horizontal direction is connected to the protruding piece 7 of the tray carrier 70.
A large-diameter upper binion is rotatably supported so as to hang down on the lower surface side of 1a, and a part of the gear part is exposed on the upright piece 72 side of the tray carrier 70, and engages with the rack 18 of the disk tray IO. 131 and this upper binion 13
A cylindrical body part 132 is integrally formed on the lower surface side of the body part 132 and has a concave cutout part 132a extending vertically on the circumferential surface. It is composed of a small-diameter lower pinion 133 that meshes with the gear portion 153. Note that a part of the body portion 132 and the lower pinion 133 of this differential gear 130
is housed in a cylindrical portion 3E formed in the chassis 3 when the tray carrier 70 is lowered.

G13. Configuration of servo member (FIGS. 1 and 4) The optical pickup 50 is made to follow the curvature of the surface of each of the LD and CD disks held by each drive device 20.30 to control the skew angle thereof.

The skew servo member 140 to be adjusted is formed into a substantially T-shaped plate shape, and rotates in the vertical direction via 0142 between a pair of brackets 141, 141 fixed on both sides of the middle part on the chassis 3. I support it. The front end of this skew servo member 140 has a cam follower 143 that engages with a second cam groove 152 of a control cam plate 150, which will be described later. In addition, the skew servo member 1
At the rear end of 40 is a support pin 6 of the pickup main body 53.
It has an adjustment bar 144 that comes into contact with and separates from zero.

G Il, Structure of Guide Member (FIGS. 6 to 8) A control cam plate 150 that controls and interlocks the carrier drive mechanism 120, differential gear 130, and skew servo member 140, respectively, is formed in a disk shape. It is rotatably supported by the support pin 122 of the carrier drive mechanism 120. A substantially heart-shaped first cam groove 151 is formed on the inner peripheral side of the upper surface of the control cam plate 150, and
An annular second cam groove 152 is formed on the outer circumferential side thereof. Further, an upper gear part 153 is formed at the upper part of the outer circumferential surface of the control cam plate 150 over an angle of about 177 degrees, and a lower gear part 154 is formed at the lower part thereof over the entire circumference.

The first cam groove 151 is a tray loading/unloading groove 151a.
, a carrier vertical movement groove 151b, and a skew adjustment groove L51c.

G, 7. Configuration of the drive mechanism for the guide member (FIG. 4) The drive mechanism 160 that drives the control cam plate 150 includes a motor 162 as a drive source fixed to the chassis 3 and having a drive pulley 161 on its rotating shaft; It is comprised of a deceleration device 163 that decelerates the driving force and transmits it to the control cam plate 160.

This speed reduction device 163 includes the control cam plate 150
A first gear 164 having a small diameter pinion 164a that meshes with the lower gear portion 154 of The driven pulley 166 has a driven pulley 166. A belt 167 is provided between the driving pulley 161 and the driven pulley 166.
is set up.

Note that an LD is mounted on the disk tray 10 at a predetermined position on the bottom plate 3' below the opening 3A of the chassis 3.

Optical sensor 17 that determines whether any CD is placed
0 is placed. Further, an opening 2a opened at the front of the player main body 2 is opened and closed by a lid 171. Further, on the front of the player body 2, a power switch 172. Tray open/close button 1 for LD
73. CD tray open/close button 174. Play/Bose button 175. A stop button 176 and the like are provided.

G I8. Operation of the Embodiment (Figs. 14 to 25) According to the disc player I of the above embodiment, when playing back the LD8, the power switch 172 is turned on and the LD tray open/close button 173 is pressed. Then, as shown in FIG. 22, the control cam plate 1 is moved by the drive mechanism 160.
50 and the differential gear 130 rotate in the direction of the arrow in the figure.

As a result, the disc tray 10 is moved from the opening 2a of the player main body 2 to the 15th position via the rubber 18 of the disc tray 10 that meshes with the upper pinion 131 of the differential gear 13.
．． As shown in FIG. 16, almost the entire portion is pulled out (ejected).

From this eject state, when the LD8 is placed on the large-diameter mounting portion 11 and the button 173 is pressed again, the control cam plate 150 is moved in the opposite direction by approximately 177 degrees, as shown in the timing charts of FIGS. 23 and 14. By rotating the disc tray 10, the disc tray 10 is drawn into the player main body 2 and stored (loaded) as shown in FIG. Then, when the control cam plate 150 further rotates, the differential gear 130 stops and the control lever 12
4 slides backwards. As a result, the rotating lever 12
6 rotates in the direction of the arrow in FIG.
As the tray carriers 28 slide forward, the pair of tray carriers 70 and 80 are lowered. Along with this descent, the disk tray lO changes from the state shown in FIG. 20 to the 21st position.
The LD 8 placed on the disk tray 10 is lowered to the state shown in the figure, and the turntable 2 of the LD drive device 20
3 and the chuck 104 of the chuck plate 100 that descends together with the pair of tray carriers 70 and 80. At this time, as shown in FIG. 1.21, the transfer body 32 of the CD drive device 30 is retracted to the lower side of one of the tray carriers 80, and the support shaft 112 of the CD chuck plate 11O is Since it is placed on the top surface, the CD chuck plate 110 does not move down in conjunction with the LD chuck plate 100, and the LD8
During chucking, the chuck 111 of the CD chuck plate 110 and the LD 8 do not come into contact with each other. As shown in FIG. 20, when loading the LD8, the CD chuck plate llO is attached to the upper end of the adjustment lever 88 for correcting the difference in thickness between the LD8 and CD9.
is placed thereon, the chuck 111 of the CD chuck plate 110 and the LD 8 do not come into contact with each other.

When the plane pause button 175 is pressed from this state, the spindle motor 21 of the drive device 20 rotates at high speed, and the optical pickup 50 is slid in the radial direction of the LD 8 via the single guide shaft 31 by the feed mechanism 63. The LD8 is regenerated by reading the information. At this time, the skew servo member 140 rotates vertically about the shaft 142 as shown in FIG. 25 by forward and reverse rotation of the control cam plate 150 so as to follow the bending (warpage) of the LD8. This causes the pickup main body 53 to rotate in the vertical direction. As a result, the skew angle (angle of the optical axis) of the optical pickup 50 is adjusted, and the focus of the laser beam from the objective lens 58 of the pickup body 53 on the LD 8 spreads in an elliptical shape, resulting in deterioration of image quality due to crosstalk. There is no.

In addition, when playing CD9, the feed mechanism 40
The D drive device 30 is moved along the one guide shaft to the CD9.
Slide it to the loading position and lock it in place. From this state, the disc tray IO is ejected in the same manner as described above, and as shown in FIG. 30 turntables 3
4 and the chuck 111 of the chuck plate 110. At this time, since the chuck 104 of the LD chuck plate 100 is placed outside the small-diameter mounting portion 13 of the disk tray 10, the chuck 104 of the LD chuck plate lOO does not come into contact with the CD 9.

Then, similarly to the reproduction of the LD 8, the CD 9 is reproduced by moving the optical pickup 50 in the radial direction of the CD 9 via one guide shaft 31 and reading the information.

In this way, when chucking the LD 8, the downward movement of the CD chuck plate 110 can be controlled by simply placing the spindle 112 of the CD chuck plate 110 on the upper surface of the transport body 32 of the CD drive device 30. This can be prevented with the structure and without increasing the number of parts, and the chuck 111 of the CD chuck plate 110 does not come into contact with the LD 8 during playback of the LD 8.

H0 Effects of the invention As described above, according to the invention, the chuck plate for small-diameter disks is mounted on the upper surface of one of the tray carriers of the pair of tray carriers, and has a support shaft penetrating downward from the upper surface of the tray carrier. It is supported so that it can move up and down freely through the
The drive device for the small-diameter disk is disposed so as to be movable below the spindle when loading the large-diameter disk, and the drive device contacts and locks the lower end of the spindle to the drive device to drive the small-diameter disk. By providing a stopper that prevents the chuck plate for discs from moving downward, when playing large-diameter discs, it is possible to ensure contact between the chuck of the chuck plate for small-diameter discs and the large-diameter disc without increasing the number of parts. can be prevented.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the vicinity of a CD drive device of a disc player showing an embodiment of the present invention, FIG. 2 is a plan view of a disc tray, FIG. 3 is a front view showing the internal structure of the disc player, and FIG. The figure is a plan view showing the internal structure at the end of the skew servo, Fig. 5 is an exploded perspective view of the differential gear and cam plate, Fig. 6 is an exploded perspective view of the internal structure, and Fig. 7 is a plan view of the cam plate. Figure 8 is a cross-sectional explanatory diagram of the cam groove of the cam plate, and Figure 9 is a CD
FIG. 1θ is a front view of the CD drive device, FIG. 11 is a plan view of the CD drive device and its feeding mechanism, FIG. 12 is a side view of the optical pickup,
Fig. 13 is a front view of the optical pickup, Fig. 14 is an explanatory diagram of a timing chart of the cam plate, Fig. 15 is a plan view showing the LD eject state, Fig. 16 is a side view showing the LD eject state, and Fig. 17 is a side view showing the LD eject state. The figure is a plan view showing the CD ejected state, Fig. 18 is a partial side view showing the disc tray retracted state, Fig. 19 is a partial side view showing the disc tray storage state, and Fig. 20 is the disc tray storage state. Fig. 21 is a side view showing the LD chucking state, Fig. 22 is a plan view showing the interconnection of the main parts when the disc tray is pulled out, and Fig. 23 is a side view showing the LD when the disc tray is retracted. A plan view showing the interconnection of each main mechanism,
Fig. 24 is a plan view showing the interlocking relationship of the main mechanisms when chucking is completed, Fig. 25 is a plan view showing the interlocking relationship of the main mechanisms when the skew servo is completed, and Fig. 26 is a conventional disk tray drawer. FIG. 27 is an overall perspective view showing the conventional disc tray retracted state;
Fig. 28 is an internal schematic explanatory diagram showing the LD chucking state of the conventional example, Fig. 29 is an internal schematic explanatory diagram showing the CD chucking state of the conventional example, and Fig. 30 is a perspective view of each drive device of the conventional example. be. 1... Disc player, 2... Player body, 2
a... opening, 8... LD (large diameter disk), 9...
... CD (small diameter disc), 10... Disk tray, large part, 20... LD drive device, 30... CD drive device, 32... Transfer body (stopper part), 50...
・Optical pickup, 70.80...Tray carrier, 100...Chuck plate for LD, 110...
Chuck plate for CD, 104, 111... Chuck, 112... Support shaft, 120... Carrier drive mechanism. Fig. 2 Plan view of Kumu board Fig. 7 Fig. 8 Fig. 10 Fig. 16 Fig. 17 Fig. 23 Fig. 205 '210 r2Q3

Claims (1)

[Scope of Claims] A player main body having an opening formed on the front surface, and a disc tray that is provided to be horizontally removable from the opening of the player main body and that transports a large diameter disc or a small diameter disc into the player main body. , a large-diameter disk drive device provided in the player main body to rotate the large-diameter disk; and a large-diameter disk drive device provided so as to be movable back and forth so as to approach and move away from the drive device;
a small-diameter disk drive device that rotates the small-diameter disk; an optical pickup that is movably provided between the drive devices in the player body and reads information on each disk; and an optical pickup that reads information on each disk; A pair of tray carriers are provided so as to be movable in the vertical direction, and on which the disk trays are placed and supported; chuck plates for large-diameter disks and small-diameter disks that hold the large-diameter disk and small-diameter disk; and a carrier drive mechanism that is connected to the pair of tray carriers and moves the pair of tray carriers up and down, The chuck plate for the small diameter disk is placed on the upper surface of one of the pair of tray carriers, is supported so as to be vertically movable via a support shaft penetrating downward from the upper surface thereof, and is The disk drive device is disposed so as to be movable below the spindle when loading the large-diameter disk, and the lower end of the spindle abuts and locks the drive device to load the small-diameter disk. A disc player characterized by being provided with a stopper portion that prevents the chuck plate from moving downward.