JPH08329584A - Disk player - Google Patents

Abstract

PURPOSE: To provide a disk player with the size almost the same as that of a conventional LD player while having both of the reproducing function of a large diameter disk and the changing over function of a small diameter disk. CONSTITUTION: Below a 1st tray, on which a large diameter disk (LD) placing part 1a, a main opening part 1c slightly larger than the small diameter disk (VCD) 9a and sub-opening parts 1d, 1e are formed, a 2nd tray 8 on which the small diameter disk placing parts 8a, 8b, 8c matched with each opening part 1c, 1d, 1e are formed is arranged. Then, the 2nd tray 8 is moved by a driving lever 10 between the 1st position where the small diameter disk placing part 8a is matched with the main opening part 1c and the 2nd position on the rear side thereof, then the 2nd tray 8 is rotated to the prescribed position by a driving cam 14 during the movement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a laser disk (hereinafter referred to as L
D), compact disc (hereinafter referred to as CD),
Video CD with audio and video recorded (hereinafter referred to as VCD)
The present invention relates to a disc player capable of continuously reproducing a plurality of discs in a CD or VCD.

[0002]

2. Description of the Related Art Recently, a disk which can be randomly accessed at high speed has been attracting attention as a recording medium, and several kinds of disks have been spread in the market. Therefore, a disc player having a changer function capable of simultaneously including a LD as a large disc and a CD, a VCD or the like as a small disc, and selecting and reproducing the disc has been proposed and various proposals have been made.

As such a disc player, for example, a disc player disclosed in Japanese Patent Laid-Open No. 1-303667 has been devised.

In the above-discussed conventional disc player,
A spindle motor for a large-diameter disk and a spindle motor for a small-diameter disk are arranged outside the outer circumference of the large-diameter disk mounted on the spindle motor. And
It has a first tray on which a large-diameter disc is placed and a second tray (adapter) placed concentrically with the first tray and holding a small-diameter disc. Further, it has a rotation mechanism for rotating the first tray in the spindle direction for the small-diameter disc when reproducing the small-diameter disc, and a transfer mechanism for transferring the small-diameter disc onto the spindle motor from the rotated position.

[0005]

However, in the above-mentioned conventional structure, a total of two spindle motors are used for the large-diameter disc and the small-diameter disc, and when reproducing the small-diameter disc, the tray on which the small-diameter disc is mounted is made small-diameter. After being driven to rotate in the direction of the spindle motor for discs, it needs to be transferred to the spindle motor section for small-diameter discs located outside the area of the large-diameter disc by the transfer mechanism, which complicates the configuration and increases the amount of time before and after the disc player. The size in the direction was also larger than that of a conventional LD player without a changer function.

The present invention has a simple structure in view of the above conventional problems, and has a conventional LD player which has both a reproducing function for a large-diameter disk and a continuous reproducing function for a plurality of small-diameter disks, but does not have a changer function. It is intended to provide a disc player having almost the same size as the above.

[0007]

In order to achieve this object, a disk player of the present invention has a large-diameter disk mounting portion for mounting a large-diameter disk and a small-diameter disk approximately concentric with the large-diameter disk mounting portion. A first tray having a main opening slightly larger than the diameter, and at least one or more sub-openings having substantially the same diameter as the main opening near the main opening; , At least 2 so that a small-diameter disk can be placed at the same position as the main opening and the sub-opening when in the first position
Two or more small-diameter disc mounting portions are formed, and a second tray having an outer shape connected to the small-diameter disc mounting portion by a tangential line of the outer periphery of the small-diameter disc, a first position, and a first position A tray actuating member for moving the second tray between the second position located at the rear, and the second tray in the second position, or when moving between the first position and the second position A tray rotation drive means for rotating the second tray to a predetermined position, and a spindle motor arranged substantially at the center of the large-diameter disc mounting portion for rotationally driving both the large-diameter disc and the small-diameter disc non-simultaneously. It is equipped with an optical pickup that detects the signals of the large-diameter disc and the small-diameter disc. When necessary, the position where the large-diameter disc or the small-diameter disc is placed and the large-diameter disc or the small-diameter disc are reproduced. The transferring the first tray 置間 1
Tray transfer means, a disc first mounting position of a first tray on which a large-diameter disc is placed, and a disc tray of a first tray on which a small-diameter disc is placed on a disc placing portion in the front row of the second tray. A detection member for detecting the mounting position and the disc third mounting position of the first tray, which is located between the disc first mounting position and the disc second mounting position and which mounts all of the small-diameter discs on the second tray; And a drive cam formed with a gear for rotating the second tray and a cam for driving the tray actuating member.

[0008]

With the above structure, the disc player of the present invention temporarily moves the second tray backward by the tray operating member and then rotates (or moves) the second tray by a predetermined angle by the disc rotation driving means. Rotate a predetermined angle on the way). Next, the tray actuating member moves the second tray to the position where the opening of the first tray and the small-diameter disc mounting portion, which are the initial positions, coincide with each other, whereby the next small-diameter disc is transferred onto the spindle motor unit. Playable state. By repeating this operation, the small-diameter discs placed on the second tray can be continuously reproduced. Further, by rotating the second tray at the position moved to the rear, the maximum outer shape portion of the second tray can be rotated inside the front surface of the first tray, so that the size of the disc player in the front-rear direction is changed. It is almost the same as the conventional LD player without.

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a state in which an LD is reproduced by a disc player according to the first embodiment of the present invention,
2 is a partial cross-sectional plan view showing a state when the VCD is reproduced, FIG. 3 is a partial cross-sectional plan view showing a state during the VCD replacement, and FIG. 4 is a partial cross-sectional plane view also showing a state during the VCD replacement. 5 and 5 are sectional views of the drive lever portion shown in FIG. 3, FIG. 6 is a partial view showing a detection switch portion for detecting the position of the second tray after the VCD change, and FIG. 7 is an LD mounted on the first tray. 8 is a plan view showing a state, FIG. 8 is a plan view showing a state in which a VCD is placed, and FIG. 9 is a plan view showing a state in which the first tray is ejected when another VCD is replaced during VCD reproduction.

In FIGS. 1 and 5, reference numeral 1 denotes a first tray, which is provided with steps so that the LD mounting portion 1a, the LD single mounting portion 1b and the main opening 1c are formed concentrically. Sub-openings 1d and 1e are formed on the front side. Reference numeral 2 denotes an optical pickup, which is held by the guide lots 3 and 4 and moves along a slit provided in the first tray to read a signal of a placed disc. A turntable 5 presses and holds the disk to be reproduced together with the clamper 26 and rotates it by the spindle motor 27. Reference numeral 6 is a frame of a disk player, and 7 is an LD (shown by a two-dot chain line).

In FIGS. 2 and 5, reference numeral 8 is a second tray, which is formed under the first tray 1 and has VCDs 9a and 9a.
VCD mounting portions 8a, 8b and 8c are formed so that b and 9c (indicated by a chain double-dashed line in FIG. 2) can be mounted respectively. In addition, concave position detection holes 8d, 8e, 8f, 8g, 8h (8h cannot be shown in FIG. 2, see FIG. 6) are formed in the ridge of the second tray 8 and a gear 8k is formed in the central portion. Has been done. 10 is a drive lever, and relay gears 11, 12,
13 is rotatably supported, the shaft portion 10a formed at one end rotatably supports the second tray 8, and the gear 8k and the relay gear 11 are meshed with each other. Reference numeral 14 denotes a drive cam, on the outer peripheral portion of which a first gear 14a is formed, and on the inner side thereof, a second gear 14b is partially formed with the number of teeth shown. further,
The drive cam 14 has cam grooves 14c, 14d, 14e, 14
f is formed and is engaged with the cam follower 15 fixed to the drive lever 10. Reference numeral 28 denotes a plate shaft, which is composed of a plate 29 fixed to the first tray 1 and also pivotally supports the drive lever 10 together with the relay gear 13, whereby the drive lever 10 rotates in response to the rotation of the drive cam 14. . Reference numeral 16 denotes an intermediate gear, which is formed with a gear portion 16a and a pulley portion 16b which mesh with the first gear 14a. A belt 19 is attached between the pulley portion 16b and the pulley 18 fixed to the motor 17. A transfer gear 20 shown in the left front part of the drawing is a small gear portion 20a of which is a first gear.
The rack portion 1f formed on the tray 1 and the large gear portion 20b
Are rotatably engaged with gears 22 attached to the transfer motor 21, respectively. Reference numerals 23, 24 and 25 are detection switches, the detection switches 23 and 24 are attached to the first tray 1, and the detection switch 25 is attached to the frame 6. Position detection holes 1g, 1h, 1i, 1j for position detection are formed on the left side surface of the first tray 1 to serve as detection members.

The operation of the disc player of the present embodiment constructed as above will be described below.

First, the operation of reproducing the LD 7 will be described. First, in the state shown in FIG. 1, the tray discharge switch A
When (not shown) is turned on, a drive circuit (not shown) applies a drive current to the transfer motor 21 to transfer the transfer motor 21.
Starts rotating. Then, the rotation of the transfer motor 21 is transmitted from the gear 22 shown in FIG. 2 to the transfer gear 20 and the rack portion 1f, and the first tray 1 moves to the position shown in FIG.
At the position shown in FIG. 7, the detection switch 25 has the position detection hole 1
Detect j. Then, in response to this detection signal, the drive circuit stops the drive current to the transfer motor 21, thereby completing the ejection operation of the first tray 1. In this state,
When the loading button (not shown) is turned on after the LD 7 is placed on the LD placing section 1a, the operation opposite to the tray discharging operation described above is performed to move the first tray 1 to the position shown in FIG. . At this position, the detection switch 25 detects the position detection hole 1g. The drive circuit stops the drive current to the transfer motor 21 by this detection signal, and the first tray 1
Loading operation is completed (state shown in FIG. 1). Although the detection switch 25 detects the position detection holes 1h and 1i during the ejection and loading of the first tray 1, the first tray 1 is detected at a target position by adding the number of times the switches are turned on.
Is to stop.

Next, when a reproduction button (not shown) is turned on, a drive current is applied from the drive circuit to the motor (not shown) of the lifting mechanism, and the spindle motor 27 shown in FIG. 5 moves in the direction of arrow A. . Then, after placing the LD 7 on the turntable 5, the LD 7 is clamped between the clampers 26 to complete the clamping operation. And, LD7 is the spindle motor 2
7 is rotationally driven, and the pickup 2 reads and reproduces a signal.

Next, the operation when the VCD is continuously reproduced will be described. First, when the tray discharge switch B (not shown) is turned on in the state shown in FIG. 1 (the state where no disc is inserted), the above-described first tray 1 discharge operation is performed, and Move to the position shown in 8.
At the position shown in FIG. 8, the detection switch 25 has the position detection hole 1
g is detected, and the drive circuit stops the drive current to the transfer motor 21 by this detection signal, whereby the loading operation of the first tray 1 is completed. In this state, VCD
9a, 9b and 9c are mounted on the VCD mounting portions 8a, 8b and 8c, respectively. After that, when the loading button is turned on, the loading operation of the first tray 1 and the clamping operation of the VCD 9a are performed to the position shown in FIG. After that, the spindle motor 27 rotationally drives the VCD 9a, and the pickup 2 reads the signal of the VCD 9a and performs reproduction.

When the reproduction of the VCD 9a is completed, the next VC
The operation of changing D9b to the reproduction position is performed. First, the drive circuit gives a drive current to the motor (not shown) of the lifting mechanism in response to the reproduction end signal of the VCD 9a to move the spindle motor 27 in the direction of arrow B in FIG. Then, when the VCD 9a is placed on the VCD placing portion 8a of the second tray 8 shown in FIG. 2, the drive circuit gives a drive current to the motor 17 to rotate the motor 17. And the motor 1
When the rotation of 7 is transmitted from the belt 19 to the intermediate gear 16, the drive cam 14 rotates clockwise. When the drive cam 14 rotates clockwise, the cam groove 14c rotates the drive lever 10 clockwise around the plate shaft 28. At the same time, the drive lever 10 moves the second tray 8 to the position shown in FIG.
Move to the position shown in. From this state, since the cam follower 15 is engaged with the cam groove 14e, the drive lever 10 does not rotate. Further, the drive cam 14 rotates and the second gear 14b starts to mesh with the relay gear 13. The rotation of the drive cam 14 causes the relay gears 13 and 1 to rotate.
2 and 11 are transmitted to the gear portion 8k, and the second tray 8 is rotated 120 degrees clockwise from the state shown in FIG. 3 through the state shown in FIG. In this state rotated by 120 degrees, the first gear 14b shown in FIG. 4 is disengaged from the state in which it meshes with the relay gear 13, so that the second tray 8 does not rotate. When the drive cam 14 further rotates, the cam groove 14d shown in FIG.
0 is rotated counterclockwise around the plate shaft 28. By the operation at this time, the second tray 8 moves to the position shown in FIG. 2, and the position detection hole 8h formed in the second tray 8 shown in FIG. 6 turns on the detection switches 23 and 24. Then, the drive circuit stops the drive current to the motor 17 by the detection signals of the detection switches 23 and 24, and the change operation is completed. In this state, the VCD 9b shown in FIG. 2 is at the position on the turntable 5 rotated clockwise by 120 degrees. Next, after the VCD 9b is clamped by the above-mentioned clamping operation, the spindle motor 7 is driven to rotate to V
Play the CD 9b. Further, when the reproduction of the VCD 9b is completed, the change operation and the clamp operation described above are performed to reproduce the next VCD 9c. Position detection holes 8d, 8e and 8 formed on the outer shape of the second tray 8 shown in FIG.
f and 8g and 8h shown in FIG. 6 are position detection switches 23 and 2 when each VCD is changed on the turntable 5.
It is in a position facing No. 4. Then, the two detection switches 23 and 24 are combined to determine the position of each VCD. In addition to the continuous playback described above, three V
If you specify the CD playback order and play, the VC
Continuous reproduction of D can also be performed.

Next, the operation of exchanging another VCD during reproduction of a VCD will be described. First, as shown in FIG.
When the disc exchange button (not shown) is turned on while 9a is being reproduced, the first tray 1 ejection operation described above is performed, and the first tray 1 is ejected to the position shown in FIG. At the position shown in FIG. 9, the detection switch 25 has the position detection hole 1
Detect h. Then, in response to this detection signal, the drive circuit stops the drive current to the transfer motor 21, and the ejection operation of the first tray 1 is completed. In this state VCD 9b, 9c
The small-diameter disc mounting portion 8 of the second tray 8
When the VCDs 9d and 9e are placed on b and 8c and the loading button is turned on, the loading operation described above is performed up to the state shown in FIG.

As described above, according to this embodiment, when the VCD is changed, the second tray 8 is moved rearward and then the second tray 8 is rotated inside the first tray 1, so that the LD is reproduced. Conventional LD which has both changer function and VCD changer function but no changer function
It can be about the same size as the player. Also,
When loading LD, loading VCD, and exchanging other discs during VCD playback, the tray discharge amount is changed according to the loading state of each disc, so the loading time is the minimum necessary. Can be

In this embodiment, the second tray has a C
An example of a disc player in which three D's can be placed (that is, the first tray has two sub-openings) is not limited to this, and examples in which two CDs can be placed and four CDs can be placed This can be realized by the present invention.

In the first embodiment, the second tray 8 is moved rearward, rotated to a predetermined position and then moved to the reproduction position. However, while moving the second tray 8, It may be rotated to a predetermined position.

[0022]

As described above, according to the present invention, a large-diameter disk mounting portion for mounting a large-diameter disk and a main opening slightly concentric with the large-diameter disk mounting portion and slightly larger than the small-diameter disk diameter are provided. , In the vicinity of the main opening, at least 1 having the same diameter as the main opening
A first tray having one or more sub-openings formed therein, and a small-diameter disc at the lower part of the first tray, at the same position as the main opening and the sub-opening when in the first position. A second tray having at least two or more small-diameter disc mounting portions and having an outer shape that is connected to the outer periphery of the small-diameter disc mounted on the small-diameter disc mounting portion by substantially tangent lines; a first position;
And a tray actuating member for moving the second tray between the second position located rearward of the second position and the second tray in the second position, or between the first position and the second position. Tray rotation drive means for rotating the second tray to a predetermined position, and a spindle arranged substantially at the center of the large-diameter disc mounting portion for rotationally driving both the large-diameter disc and the small-diameter disc non-simultaneously. By providing a motor and an optical pickup that detects the signals of the large-diameter disc and the small-diameter disc, it has a changer function while having the reproducing function of the large-diameter disc and the continuous reproducing function of a plurality of small-diameter discs with a simple configuration. It is possible to realize a disc player having almost the same size as a conventional LD player which does not have a conventional LD player.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which an LD is reproduced by a disc player of the present invention.

FIG. 2 is a plan view showing a state when reproducing a VCD.

FIG. 3 is a plan view showing a state in which the VCD is being replaced.

FIG. 4 is a plan view showing a state in which the VCD is being replaced.

FIG. 5 is a sectional view of the drive lever portion shown in FIG.

FIG. 6 is a partial view showing a detection switch unit for detecting the position of the second tray after the VCD is replaced.

FIG. 7 is a plan view showing a state where an LD is placed on the first tray.

FIG. 8 is a plan view showing a state where a VCD is placed on the same.

FIG. 9 is a plan view showing a state in which the first tray is ejected when another VCD is replaced during VCD reproduction.

[Explanation of symbols]

 1 1st tray 1a LD mounting part 1c Main opening part 1d, 1e Sub opening part 1f Rack part 1g, 1h, 1i, 1j Position detection hole 2 Optical pickup 5 Turntable 6 Frame 7 LD 8 2nd tray 8a, 8b, 8c VCD mounting portion 8d, 8e, 8f, 8g Position detection hole 9 VCD 10 Drive lever 11, 12, 13 Relay gear 14 Drive cam 17 Motor 20 Transfer gear 21 Transfer motor 23, 24, 25 Detection switch

Claims (3)

[Claims] 1. A large-diameter disk mounting portion for mounting a large-diameter disk, a main opening substantially concentric with the large-diameter disk mounting portion and slightly larger than the small-diameter disk diameter, and the vicinity of the main opening. A first tray having at least one sub-opening having substantially the same diameter as that of the main opening, and the main opening and the main opening when the first tray is located below the first tray. At least two or more small-diameter disc mounting portions are formed so that the small-diameter discs can be mounted at the same positions as the sub-openings, and the small-diameter disc mounting portions are connected to each other by a substantial tangent line of the outer periphery of the small-diameter discs. A second tray having an outer shape, a tray operating member that moves the second tray between the first position and a second position located rearward of the first position, and the second tray is the When in the second position or with the first position Tray rotation drive means for rotating the second tray to a predetermined position while moving between the second positions, and the large-diameter disc disposed at a substantially central position of the large-diameter disc mounting portion. And a small-diameter disc that is driven to rotate both of them at the same time, and an optical pickup that detects signals from the large-diameter disc and the small-diameter disc. 2. A first tray transfer means for transferring the first tray between a position for mounting the large-diameter disc or the small-diameter disc and a position for reproducing the large-diameter disc or the small-diameter disc, and mounting the large-diameter disc. A disc first mounting position of the first tray, a disc second mounting position of the first tray on which the small-diameter disc is mounted on the disc mounting portion of the frontmost row of the second tray, and A detection member for detecting a disc third mounting position of the first tray, which is located between the disc first mounting position and the disc second mounting position, and which mounts all of the small-diameter discs on the second tray. The disc player according to claim 1, further comprising: 3. The disc player according to claim 1, further comprising a cam for driving the tray actuating member and a drive cam having a gear portion for rotating the second tray.