JP3870378B2 - Power changer for disc changer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a disc changer apparatus that stores a plurality of optical disc recording media such as CDs and DVDs and automatically records or reproduces a selected recording media, and transports a subtray on which the recording media are placed. In addition, the present invention relates to a disk changer driving apparatus in which the optical pickup is driven by a single motor.
[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 since these are selected and recorded / reproduced, and the selected disc must be exchanged, a large number of operations are necessary. In particular, 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]
The “optical disk apparatus” according to Japanese Patent Laid-Open No. 2000-222803 is intended to simplify the structure, improve shock resistance and vibration resistance, and improve productivity while reducing the number of motors used. Accordingly, a turntable, a first motor for driving the optical base, an optical pickup, and a driving mechanism thereof are provided in a traverse base that can be rotated up and down separately from the apparatus base, and a loading driving mechanism that drives a disk loading mechanism, and the loading A power transmission path switching mechanism is provided for switching the transmission path of the driving force of the second motor capable of rotating in the forward and reverse directions to apply driving force to the driving mechanism and the optical pickup driving mechanism. By continuously rotating in the direction, the optical pickup moving operation, the turntable lifting operation and the disk moving operation are performed substantially continuously in this order. By continuously rotating in the reverse direction, these operations are performed in the opposite directions. It is performed substantially continuously in the reverse order.
[0006]
The second motor is configured to perform an optical pickup moving operation, a turntable lifting / lowering operation, and a disk moving operation. That is, a loading drive mechanism for driving a disk loading mechanism, and a power transmission path switching mechanism for switching a transmission path of a driving force of a second motor that applies a driving force to the loading driving mechanism and the optical pickup driving mechanism between the both driving mechanisms are provided. ing. However, this power transmission path switching mechanism is provided with a cam gear having teeth on the outer periphery, and its structure becomes complicated and the stability of the operation is impaired.
[0007]
[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. The power is switched using one motor, and the switching operation can be performed silently without using the plunger, and the structure is simple. Provided is a power switching device in a disk changer which is low in cost and can perform a stable switching operation.
[0008]
[Means for solving the problems]
The power changer for a disk changer according to the present invention includes a single motor that transports a sub-tray in a standby position to a reproduction position, vertical movement (vertical movement) of a traverse frame on which a traverse unit is mounted, and driving of an optical pickup. It is configured to operate. To play the disc at the disc standby position, the traverse frame is moved vertically to the disc position (disc playback position), the sub-tray is transported to the disc playback position, and the disc is mounted on the turntable. Move the pickup.
[0009]
By the way, when the optical pickup moves, the traverse frame must stop at a predetermined height, and the sub-tray must stop without moving at the disk playback position. Therefore, the power of the motor is separated so as not to be transmitted to the traverse frame and the sub-tray. Here, in the present invention, the gear provided on the traverse unit side and the gear main provided on the traverse frame side are engaged with each other, and the mechanism is separated from the gear main when the traverse unit is raised when the disc is mounted on the turntable. It consists of.
[0010]
Although the specific form of the gear main is not limited, for example, a missing tooth portion is formed in the gear main, and the gear moves up with the rise of the traverse unit so that the power can be shut off at the missing tooth portion of the gear main. . There are various slide moving means for the traverse unit, and there is no limitation. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
[0011]
【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.
[0012]
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.
[0013]
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.
[0014]
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.
[0015]
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.
[0016]
Each disk at the disk standby position is transported together with the sub-tray to the rear disk reproduction position and 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 can be moved in the vertical direction so as to match the position of the transported sub-tray, and a disk of a predetermined sub-tray that has been selectively retracted can be mounted.
[0017]
By the way, the disk changer apparatus of the present invention can drive these with two motors provided. That is, the first motor 7 and the second motor 8 are provided. The first motor 7 shown in the figure rotates the pulley 10 via the belt 9, the power of the pulley 10 is transmitted to the gear 11, further rotates the gear cam 12, and the gear cam 12 meshes with the gear 13. The gear 13 meshes with a rack 14 provided on the side edge of the main tray 2. Therefore, if the first motor 7 is rotationally driven, the main tray 2 is slid and conveyed into the main body case 1.
[0018]
FIG. 3 shows a drive path of the second motor 8. The second motor 8 rotates the gear 15, the gear 16 meshes with the gear 15, the gear 16 meshes with the gear 17, the gear 17 meshes with the gear 18, and the gear 18 meshes with the gear main 19. The gear main 19 is engaged with the gear 20, and the gear 20 is engaged with the gear clutch 21. Further, the gear clutch 21 is engaged with the gear cam 22.
[0019]
Here, the gear clutch 21 is pivotally supported at the tip of the lever clutch 23, and the lever clutch 23 is moved up and down by swinging by the gear cam 12 that is rotationally driven by the first motor 7, as shown in FIG. The gear clutch 21 shown is in the down position and meshes with the gear cam 22. Therefore, the lever cam 24 can swing left and right about the shaft 25 by rotating the gear cam 22.
[0020]
The pin 26 provided on the lever slider 24 is fitted in the cam groove 27 of the gear cam 22, and when the gear cam 22 rotates, the pin 26 moves along the cam groove 27. As a result, the lever slider 24 swings left and right. Can move. Since the sliders 28 a and 28 b are connected to the left and right ends of the lever slider 24, the sliders 28 a and 28 b can be slid by the left and right swinging of the lever slider 24, and as a result, the traverse equipped with the traverse unit 5. The frame 53 moves up and down.
[0021]
FIG. 4 shows a drive path when the gear clutch 21 pivotally supported at the tip of the lever clutch 23 is positioned at the top. The gear clutch 21 meshes with the gear 29, and the gear 29 meshes with the gear 30. Further, the gear 30 meshes with the gear 31, and the gear 31 meshes with the sub-tray rack 32. Therefore, if the gear 31 is rotated by the second motor 8, the sub-tray 3 in the standby position is moved backward to the back and moved to the reproduction position.
[0022]
FIG. 5 shows the lever clutch switching operation. (a) is a case where the gear clutch 21 is engaged with the gear cam 22, and the traverse frame 53 can be moved up and down. (B) shows a case where the gear clutch 21 is engaged with the gear 29, and the sub-tray 3 is conveyed to the reproduction position.
[0023]
FIG. 6 shows the swinging state of the lever slider 24. When the lever slider 24 swings left and right, the sliders 28a and 28b connected to the left and right ends are guides formed on the main body frame 1. Move along the slide. The sliders 28a and 28b are formed with cam grooves 33, 33,... In a stepped manner, and pins (not shown) protruding on both sides of the traverse frame 53 are loosely fitted into the cam grooves 33, 33,. . Therefore, if the sliders 28a and 28b slide, the traverse frame 53 can move up and down (see FIG. 3).
[0024]
In accordance with the vertical movement of the traverse frame 53, the sub-tray rack 32 that conveys the sub-tray 3 to the reproduction position can move up and down. FIG. 7 is a specific example showing a transport mechanism of the sub-tray 3 by the sub-tray rack 32, and the sub-tray rack 32 is engaged with the gear 31 shown in FIG. A pulling portion 34 stands vertically at the tip of the sub-tray rack 32, and a tab 35 is formed at the tip of the pulling portion.
[0025]
An insertion hole 36 is provided through the corner of one sub-tray 3, and a locking piece 38 is provided in the opening 37 of the insertion hole 36. Therefore, the sub-tray rack 32 is raised, the pulling portion 34 is fitted into the insertion hole 36, and the claw 35 formed at the tip is locked to the locking piece 38. If the gear 31 rotates in this state and the sub-tray rack 32 slides, the sub-tray 3 is transported to the reproduction position by being pulled by the pulling portion 34. Therefore, when the uppermost sub-tray 3a is transported, the sub-tray rack 32 rises together with the traverse frame 53, and the traction part 34 is inserted through the insertion holes 36 and 36 of the lower-side sub-trays 3b and 3c. Reach 3a.
[0026]
If the gear 31 rotates in this state and the sub-tray rack 32 slides, only the upper sub-tray 3a locked to the claw 35 is conveyed. The sub-tray 3b, 3c located on the lower side passes through the openings 37, 37 formed in the insertion holes 36, 36, and is stationary without being conveyed. On the other hand, even when the disc is exchanged together with the main tray to the disc exchange position, the predetermined sub-tray with which the tab 35 is locked is stopped at the standby position.
[0027]
As described above, the second motor 8 can switch the gear clutch 21 to move the traverse frame 53 up and down and convey the sub-trays 3a, 3b, and 3c to the reproduction position. Then, the second motor 8 can drive the optical pickup 39 when reproducing the disk placed on the sub-tray 3a, 3b, 3c and conveyed to the reproduction position.
[0028]
Accordingly, the traverse unit 5 is provided with a rack 40, and a gear meshing with the rack 40 is driven by the second motor 8. When the rack 40 is driven, the traverse unit 5 is moved up and down, and the sub-trays 3a and 3b are driven. , 3c is configured so that the gear main 19 is separated so as not to be conveyed to the reproduction position.
[0029]
FIG. 8 is an embodiment showing a power switching device according to the present invention. 4 corresponds to the power transmission path shown in FIG. 4, but the gear 31 is rotated by the second motor 8, and the sub-tray rack 32 is slid by the rotation of the gear 31, so that the sub-tray 3a, 3b, 3c is conveyed.
[0030]
FIG. 9 shows a state in which the predetermined sub-tray 3 is conveyed, and the pins 41 standing on the sub-tray rack 32 are fitted into the introduction grooves 43 formed in the rack loading 42 to slide the rack loading 42 to the left side. . The introduction groove 43 has an inclined portion and is bent at a substantially right angle, and the pin 41 entering from the inlet moves the rack loading 42 to the left when reaching the inclined portion.
[0031]
A rack 44 is provided on the right side of the rack loading 42, and an auxiliary gear 45 provided at the upper end of the gear main 19 can mesh with the rack, and the rack loading 42 is further moved to the left side. FIG. 9B shows an enlarged view of part A, and the auxiliary gear 45 is provided with large teeth 46 that protrude greatly outwardly, and the large teeth 46 are provided at the end of the rack 44. And the auxiliary gear 45 can mesh with the rack 44 by rotating counterclockwise. At this time, the meshing between the sub-tray rack 32 and the gear 31 is released.
[0032]
In this way, the rack loading 42 moves to the left side, and the leading end side of the traverse unit 5 that is inclined with the disc standby side lowered is raised, and the disc transported to the reproduction position is mounted on the turntable 6. . FIG. 10 is a specific example showing the rack loading 42 alone. The rack loading 42 is provided with a guide groove 48, and a boss provided at the tip of the traverse unit 5 is loosely fitted into the guide groove 48. Therefore, if the rack loading 42 moves to the left side, the front end side of the traverse unit 5 is lifted.
[0033]
FIG. 11 shows a case where the gear main 19 is separated from the gear 18. If the rack loading 42 moves to the left and the front end side of the traverse unit 5 is lifted, the gear 18 attached to the traverse unit 5 is also raised at the same time. The gear main 19 meshes with the gear 18 and is driven to rotate. However, the rack 44 is sent to the left side by the rotation of the auxiliary gear 45, and at the same time, the gear 18 rises together with the traverse unit 5 and is provided on the gear main 19. 49 (see b in the figure).
[0034]
The height of the gear main 19 is large, and a missing tooth portion 49 is formed at the upper end. Then, when the raised gear 18 reaches the toothless portion 49, the rotation of the gear 18 is not transmitted to the gear main 19 and the power is cut off. As shown in FIG. 10, the rack loading 42 is provided with a protruding portion 50 formed with an inclined surface 51 so as to protrude, and if the rack loading 42 moves to the left side, the rack 40 provided in the traverse unit 5. The rack 40 is pushed out against the tip of the rack, and the rack tip meshes with the gear 52.
[0035]
As the gear 52 rotates, the rack 40 is sent and the disk is reproduced. As described above, the power switching device according to the present invention can be separated from the gear main by raising the gear provided on the traverse unit side, and has the following effects. I can do it.
[0036]
【The invention's effect】
The disc changer of the present invention can perform a raising / lowering movement of the traverse unit, conveyance of the sub-tray to the reproduction position, and driving operation of the optical pickup using a single motor. When the optical pickup is driven to reproduce the disk, the transmission of power to the sub-tray transport and the traverse frame lifting / lowering can be cut off by separating the gears.
[0037]
The disengagement of the gear is performed simultaneously with the disk mounting operation to the turntable performed by lifting the front end side of the traverse unit, and since the conventional plunger is not used, the power is quietly switched. Therefore, it is possible to supply an inexpensive apparatus by reducing the number of parts, and it is possible to prevent noise accompanying power switching, reduce power consumption, and prevent heat generation and fire. Furthermore, electrical wiring and circuit boards can be reduced, and the product is reduced in size and thickness, and troubles due to the influence of magnetic fields are prevented.
[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 is a mechanism for raising and lowering a traverse unit by a second motor.
FIG. 4 is a sub-tray transport mechanism by a second motor.
FIG. 5 is a lever clutch switching operation.
FIG. 6 is a lever slider mechanism that moves the traverse unit up and down.
FIG. 7 is a sub-tray transport mechanism.
FIG. 8 shows a switching operation when driving the optical pickup.
FIG. 9 shows a switching operation when driving the optical pickup.
FIG. 10 is a specific example of rack loading.
FIG. 11 shows a switching operation when driving the optical pickup.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body frame 2 Main tray 3 Sub tray 4 Outer peripheral edge 5 Traverse unit 6 Turntable 7 First motor 8 Second motor
18 gear
19 Gear main
42 Rack loading
44 racks
45 Auxiliary gear
46 large teeth
47 engaging teeth

Claims (3)

A plurality of sub-trays on which a disc is placed, a sub-tray on which a disc to be reproduced is placed, and a traverse unit is moved to move the traverse unit vertically to the position of the sub-tray; A traverse unit in a power switching device capable of carrying out a sub-tray transport horizontally moving between a reproduction position and a disk reproduction for clamping and reproducing a disk in a sub-tray at a disk reproduction position with a single motor. The gear main mounted on the side and the gear main on the traverse frame side mesh with each other, and the gear main drives the sub tray rack via a plurality of gears, thereby transporting the sub tray to the reproduction position, and also with the traverse unit. Is separated from the gear main by rising It is to be, conveyed in the sub-tray, and the power switching device of the disc changer is interrupted power transmission the reproduction of the disk were to be performed to the lifting movement of the traverse frame traverse unit is attached. A plurality of sub-trays on which a disc is placed, a sub-tray on which a disc to be reproduced is placed, and a traverse unit is moved to move the traverse unit vertically to the position of the sub-tray; A traverse unit in a power switching device capable of carrying out a sub-tray transport horizontally moving between a reproduction position and a disk reproduction for clamping and reproducing a disk in a sub-tray at a disk reproduction position with a single motor. Gears are attached to the side, and gear mains having a toothless portion at the upper end portion are provided on the traverse frame side and meshed with each other, and the gear mains drive the sub-tray rack via a plurality of gears to conveys the to playback position, also gear with the traverse unit By located toothless portion of the gear main by raising and as conveying the sub-tray, and power transmission is interrupted playback of a disc to move up and down of the traverse frame traverse unit is mounted is performed Power changer for disc changer. A plurality of sub-trays on which a disc is placed, a sub-tray on which a disc to be reproduced is placed, and a traverse unit is moved to move the traverse unit vertically to the position of the sub-tray; A traverse unit in a power switching device capable of carrying out a sub-tray transport horizontally moving between a reproduction position and a disk reproduction for clamping and reproducing a disk in a sub-tray at a disk reproduction position with a single motor. Gears are attached to the side, and gear mains having a toothless portion at the upper end portion are provided on the traverse frame side and meshed with each other, and the gear mains drive the sub-tray rack via a plurality of gears to conveys the to playback position, the gear is increased with the traverse unit By located toothless portion of the gear main in Rukoto, as conveying the sub-tray, and power transmission is interrupted playback of a disc to move up and down of the traverse frame traverse unit is installed is performed, the As a means for raising and lowering the traverse unit, rack loading that moves in the left-right direction with respect to the back-and-forth movement of the sub-tray is provided. The rack loading is provided with a guide groove in which the boss at the tip of the traverse unit is loosely fitted. An introductory groove is formed to enter when the pins raised on the tray rack are transported to the disk playback side, and a rack is provided on the other side for meshing with a small auxiliary gear provided at the upper end of the gear main. Power is always produced at the same timing by forming a large tooth and providing a locking tooth on the rack side. Power switching device of the disc changer is characterized in that as transmitted.

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