JP3924553B2 - Disc selection device in disc changer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a disk changer device that stores a plurality of optical disk recording media such as CDs and DVDs and automatically records or reproduces a selected recording medium, and places and transports the recording medium. The present invention relates to a disk selection device for a tray type disk changer having a plurality of trays.
[0002]
[Prior art]
A disc changer device can store a plurality of optical disc recording media such as CDs, and can select and record and reproduce one of a plurality of stored optical disc recording media. Disc changers are widely used and come in many forms. However, the disc changer device accommodates a plurality of discs, and in order to select and record / reproduce the discs and to exchange the selected discs, a large number of operations are necessary and inevitably. In addition, the number of motors increases. On the other hand, if the number of motors is limited, a power switching mechanism is required to select and perform each operation.
[0003]
For example, a “rotation transmission switching mechanism” according to Japanese Patent Laid-Open No. 2002-243015 is a single motor that performs a carriage (sub-tray) ejecting operation (conveying to a disc replacement position) and a playing operation (conveying to a disc reproducing position). In this case, a plunger is used to switch the drive path, and “a plunger having a lever for moving the rotary gear in the direction of the rotation axis and an eject operation or a play operation when selected are possible. , A carriage installed on top of each other, a drive means for ejecting action and playing action, an action switching means for switching action transmission to either the ejecting action or playing action, and an action transmission for performing ejecting action or playing action Means, and one of the first gear and the second gear is connected to the operation switching system, and the other is operated. Connecting to reach system. Then, disengaging to engage in any one of switching first gear or the second gear rotational position of the rotary gear. "
[0004]
However, the use of the plunger generates noise each time it is switched, increasing the cost of the plunger parts, increasing the power consumption, and causing heat generation and fire. In addition, the number of electrical wiring and circuit boards increases, the size of the apparatus inevitably increases, and there is a concern about the influence of the magnetic field generated from the plunger on other components.
[0005]
Japanese Patent Laid-Open No. 10-134474 “Disc player with disc changer” uses a single motor as a drive source for disc tray transfer operation for disc replacement and disc tray transfer operation for disc loading. The mechanism is simplified, and “a first transfer means for moving the disc tray horizontally between the disc storage position and a position outside the apparatus, and a first transfer means for transferring the disc tray between the disc storage position and the reproduction position”. The two transfer means is selectively driven by the first drive means, and the power transmission destination of the first drive means is determined by the rotation direction in the initial state of the first drive means. "
However, in addition to the tray conveying operation, a motor is required for the raising / lowering operation of the traverse unit and the driving operation of the pickup, respectively, and a total of three motors are used. As a result, the production cost of the disk changer increases accordingly, and the size increases.
[0006]
[Problems to be solved by the invention]
Thus, the conventional disk changer drive apparatus has the above-mentioned problems. The problems to be solved by the present invention are these problems, and it is possible to switch the power using one motor, and to perform a quiet switching operation without using a plunger, so that the manufacturing cost is low. A selection device is provided.
[0007]
[Means for solving the problems]
In the disk changer apparatus of the present invention, a plurality of sub-trays are accommodated in the main tray, and an arbitrary sub-tray is placed on the main tray and carried out when the disk is replaced. That is, when exchanging a disk placed on a predetermined sub-tray, the other sub-tray located above the sub-tray is locked so that it is not carried out together with the main tray. Therefore, a through-hole is provided in the side portion of the sub-tray and the selector sub-tray is inserted into the hole so that the sub-tray is not locked out.
[0008]
The operation of inserting the selector sub-tray into the hole is not particularly limited. For example, the selector sub-tray may be swung around the axis or may be linearly moved. The selector sub-tray is inserted into the hole of the upper sub-tray. If not, all other sub-trays except for one are carried out together with the main tray, and if inserted into the hole of the uppermost sub-tray, the sub-tray is locked and the selector sub-tray is inserted into the hole of the second-stage sub-tray. Then, the uppermost tray and the second sub-tray are locked.
[0009]
By the way, a gear cam that is rotated by a motor is used as means for operating the selector sub-tray. A lever selector that can be swung is attached to the gear cam, and the lever selector is swung by the rotation of the gear cam. The selector sub-tray is operated by movement. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
[0010]
【Example】
FIG. 1 shows a partial external view of the disk changer, and shows a case where the main tray is pulled out. In FIG. 1, 1 is a main body frame, 2 is a main tray, 3 is a sub-tray, and three sub-trays 3a, 3b, 3c are stacked on the main tray 2 and accommodated. The sub-tray 3a, 3b, 3c is formed with concentric outer peripheral edges 4a, 4b with a step so that two types of large and small disks can be placed.
[0011]
When a disk is placed on each sub-tray 3a, 3b, 3c, or when the disk is removed, the sub-tray located on the upper side is locked and stopped at the main body frame 1, and the main tray 2 together with the sub-tray located on the lower side. Is conveyed to the disk replacement position. In this way, the sub-trays 3a, 3b, 3c are accommodated in the main tray 2 and are taken in and out of the main body frame 1 together with the main tray 2.
[0012]
In this figure, the main tray 2 protrudes and is positioned between a disk replacement position (disk take-out position) and a disk standby position. The main tray 2 accommodates two sub-trays 3b and 3c, and a sub-tray 3b positioned in the middle stage. A disk can be placed on the Then, the main tray 2 moves backward from the disk replacement position and is accommodated in the main body frame 1 and conveyed to the disk standby position.
[0013]
When exchanging the discs placed on the lower sub-tray 3c, the upper sub-tray 3a and the middle sub-tray 3b are locked to the main body frame 1, and when exchanging the discs placed on the upper sub-tray 3a, Either the middle-stage sub-tray 3b or the lower-stage sub-tray 3c is locked and is not transported to the disk replacement position by the main tray 2.
[0014]
FIG. 2 shows the internal structure of the disk changer. The figure shows a state in which the main tray 2 is pulled out from the main body frame 1 and can be divided into three areas according to the position of the disk. That is, it is divided into a disk replacement position, a disk standby position, and a disk playback position from the front side of the figure, and the main tray 2 is retracted and accommodated in the main body frame 1 with each disk set in the sub-tray 3a, 3b, 3c. If so, it becomes the disk standby position.
[0015]
Each disk at the disk standby position is transported to the rear disk reproduction position together with the sub-tray 3a, 3b, 3c, and is mounted on the turntable 6 of the traverse unit 5. Then, recording / reproduction of the disc is performed. For this purpose, the traverse unit 5 provided with the turntable 6 is moved in the vertical direction so as to match the position of the sub-tray being transported, and the discs of the predetermined sub-trays 3a, 3b, 3c that have been selectively retracted are mounted. I can do it.
[0016]
By the way, it is possible to carry out the sub-tray together with the main tray and replace the disk placed on the sub-tray, but the present invention can easily select a predetermined sub-tray so that the disk can be replaced. I am doing so. FIG. 3 is an embodiment of the present invention showing a disk selection device. In the figure, 7 is a gear cam, 8 is a lever selector, 9 is a selector, and 10 is a selector sub-tray.
[0017]
The lever selector 8 is pivotally supported by a shaft 11 provided on the main body frame 1, and the tip 12 is in contact with a cam 13 provided on the gear cam 7. Therefore, if the gear cam 7 rotates, the tip 12 in contact with the cam 13 moves along the cam 13, and as a result, the lever selector 8 can swing around the shaft 11. The lever selector 8 extends to a selector 9 provided outside the sub-tray 3.
[0018]
A pin 14 is provided at a corner of the selector 9, and a key 15 extending from the lever selector 8 is locked to the pin 14. Therefore, if the lever selector 8 swings and the key 15 presses the pin 14, the selector 9 slides together with the pin 14 and presses the end 16 of the selector sub-tray 10. The selector sub-tray 10 is pivotally supported by shafts 17 and 17 so as to be swingable.
[0019]
The tip 18 of the selector sub-tray 10 is bent downward, but the tip 18 of the selector sub-tray 10 shown in FIG. 3 is not fitted into the hole 19 provided in the sub-tray 3. A spring 20 is attached to the selector sub-tray 10, and a spring force is urged in a direction away from the hole 19, and the end portion 16 is always in contact with the tip of the selector 9.
[0020]
FIG. 4 shows a case where the front end 18 of the selector sub-tray 10 is inserted into the hole 19a of the sub-tray 3a located in the upper stage. If the gear cam 7 rotates and the lever selector 8 swings and the key 15 engages with the pin 14 and presses, the selector 9 slides and pushes up the end 16 of the selector sub-tray 10, and as a result The tip 18 descends and fits into the hole 19a. Therefore, even if the main tray 2 is carried out, the sub-tray 3a is locked and does not come out.
[0021]
Similarly, in FIG. 5, the gear cam 7 further rotates and the lever selector 8 swings, the key 15 presses the pin 14 and slides the selector 9, and the tip 18 of the selector sub-tray 10 is further lowered to move the sub-tray 3 a. Are fitted in the holes 19a and 19b of the sub-tray 3b. Therefore, the upper and middle sub-trays 3a and 3b are locked, and only the lower sub-tray 3c is carried out together with the main tray.
[0022]
Here, a ratchet 21 is swingably attached to the selector 9, and a pin 14 provided on the selector 9 is engaged with a claw 22 of the ratchet 21 to fix the selector 9. Further, the ratchet 21 is pulled by the spring 23 so that the pin 14 locked to the claw 22 cannot be removed by itself.
[0023]
The pin 14 pressed by the key 15 from the state of FIG. 3 contacts the curved back surface of the claw 22a, and the ratchet 21 is swung to be engaged with the claw 22a. Although the selector 9 is pushed down by the spring force of the spring 20 attached to the selector sub-tray 10, the selector 9 is positioned and stopped by the pin 14 engaging with the claw 22a. That is, the selector sub-tray 10 is correctly positioned, and the predetermined sub-tray 3 can be locked.
[0024]
In this way, the predetermined sub-tray 3 is locked so that it cannot be carried out together with the main tray 2 to the disk exchange position. The tip 18 of the selector sub-tray 10 inserted into the hole 19 of the sub-tray 3 presses and swings the tip of the ratchet 21 when the main tray 2 is carried out to the disk replacement position, and is locked to the tab 22. The selector sub-tray 10 is returned to its original position (state shown in FIG. 3) by releasing the pin 14.
[0025]
FIG. 6 shows the mode of the gear cam 7. The gear cam 7 is provided with ribs 24, 24,... And ribs 25, 25,. The sensors 26 and 27 are arranged, and the gear cam 7 rotates so that the ribs 24, 24... Pass through the sensor 26, and the ribs 25, 25.
[0026]
(MODE 1) indicates an ejection completion position.
By pressing the eject button, the motor 28 (see FIG. 2) rotates and the gear cam 7 rotates, and the gear 29 also rotates at the same time. When this position is reached, the rotation of the motor 28 stops and the ejection of the main tray 2 is completed.
[0027]
In (MODE 2), the start position of the main tray 2 is pressed with a finger so that the main tray 2 slides backward, the gear cam 7 rotates counterclockwise, and the motor 28 is activated when it reaches this position. The main tray 2 is automatically drawn.
In (MODE 3), when the standby position motor 28 is operated, the gear 29 rotates, the main tray 2 is stored in the standby position, and becomes a standby position for entering a recording / playback operation.
[0028]
(MODE 4) is a lever clutch down position. By lowering the lever clutch 30, the gear clutch 31 attached to the tip of the lever clutch engages with the gear cam 32, and the traverse unit 5 can be moved up and down, and stops at a predetermined position. . The operation of the lever clutch 30 is performed by pressing an operation button on the front panel of the disc changer in order to select a disc to be recorded / reproduced.
[0029]
(MODE5) is eject select 1
When the disk is replaced, the upper sub-tray 3a is locked so as not to be ejected together with the main tray 2. When the operation button on the front panel is pressed, the gear cam 7 rotates, and when this position is reached, a predetermined sub-tray 3a is selected. That is, as shown in FIG. 4, the tip 18 of the selector sub-tray 10 is fitted into the hole 19a of the sub-tray 3a.
[0030]
(MODE6) is eject select 2
When exchanging the disks, the upper and middle sub-trays 3a and 3b are locked together with the main tray 2 so that they are not ejected. When the gear cam 7 further rotates and reaches this position, the sub-tray 3a, 3b is selected. When the main tray 2 is ejected, the disk placed on the sub-tray 3c that is located at the lower stage and is surfaced is replaced. That is, as shown in FIG. 5, the tip 18 of the selector sub-tray 10 is fitted into the holes 19a, 19b of the sub-tray 3a, 3b.
[0031]
As described above, the disc selection device of the present invention is provided with a hole in the side portion of the sub-tray, and the tip of the selector sub-tray that is operated by the rotation of the gear cam is fitted into the hole to be locked. Can be obtained.
[0032]
【The invention's effect】
In the disk changer for a disk changer according to the present invention, the tip of the selector sub-tray is inserted and locked in a hole provided in the side of the sub-tray so that it is not carried out on the main tray. The selector sub-tray swings the lever selector by the rotation of the gear cam, the selector selector slides by the swing of the lever selector, and the selector sub-tray is operated by the selector slide. In this way, the disk selection device is configured with a complete mechanism, and there is no electrical trouble, and the sub-tray selection associated with disk replacement can be performed accurately and stably.
[Brief description of the drawings]
FIG. 1 is a part of an external view of a disk changer.
FIG. 2 is an internal structural view of a disk changer.
FIG. 3 shows the case where the front end of the selector sub-tray is out of the hole of the sub-tray in the disc selection device.
FIG. 4 shows a case where the tip of the selector sub-tray is inserted into the hole of the upper sub-tray in the disc selection device.
FIG. 5 shows the case where the front end of the selector sub-tray is inserted into the holes of the upper and middle sub-trays in the disc selection device.
FIG. 6 shows a mode accompanying rotation of the gear cam.
[Explanation of symbols]
1 Main body frame 2 Main tray 3 Sub tray 4 Outer peripheral edge 5 Traverse unit 6 Turntable 7 Gear cam 8 Lever selector 9 Selector
10 Selector sub-tray
13 cams
14 pin
18 Tip
19 holes
21 Ratchet

Claims (3)

In a disk selection device for locking a plurality of sub-trays in a main tray and locking other sub-trays located on the upper side of the sub-tray so as not to be carried out together with the main tray in order to replace a disk set in a predetermined sub-tray. Each sub-tray has a selector sub-tray that is provided through the hole and engages and disengages from the hole. The selector sub-tray is linked to a reciprocating-sliding selector, and the selector serves as a motor for taking in and out the main tray. A disk selector in a disk changer, wherein the disk selector is interlocked with a lever selector that swings with the rotation of a gear cam that is driven.   2. A disk selection device in a disk changer according to claim 1, wherein a key is formed at the tip of the lever selector, and the key is engaged with and interlocked with a pin provided on the selector.   3. The disk selection device for a disk changer according to claim 2, wherein the ratchet is swingably mounted in the vicinity of the selector, and the pin provided on the selector is locked to the claw of the ratchet for positioning and stopping.

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