KR20030031921A - Structure of compact disk player for duble play - Google Patents

Abstract

PURPOSE: A structure of a CD Player capable of reproducing double discs is provided to selectively read data on the two disc trays according to the control signal input of a user by constructing a pickup unit to rotate by 180°. CONSTITUTION: A structure of a CD Player capable of reproducing double discs includes first and second disc trays(200,210) disposed facing each other at rear surfaces with a predetermined distance and rotating discs secured on front surfaces by rotation force of a turn table, a pickup unit(250) disposed between the first and second disc trays for reproducing written data of the discs, a pickup driving part(300) carrying out the change in the posture and position of the pickup unit according to the selection of a user, and a driving control part for controlling the operation of the pickup driving part according to user's manipulation of a manipulation panel.

Description

Structure of a CD player capable of double disc playback {STRUCTURE OF COMPACT DISK PLAYER FOR DUBLE PLAY}

The present invention relates to a structure of a CD player capable of playing a double disc, and more particularly, a pickup device for reading a disc record is placed between two opposite disc trays, which can be rotated 180 degrees. It is configured to provide a structure of a CD player capable of double disc playback to selectively read the recording of the disc tray of both sides in accordance with the user's control signal.

In general, a CD player is an apparatus for reproducing recording of a disc by forming a focus of laser light on a pit recorded on the disc using an optical pickup actuator, focusing the reflected light into an electric signal.

The CD player is mounted to be pulled out from the inside of the main frame to the outside, and the disc tray on which the disc is seated, the turntable and the driving means for rotating the disc seated on the disc tray, and the disc tray are slidably installed on the disc tray to record the signal. An optical pick-up device for reading or writing information recorded on the disc by irradiating light beams to the disc, driving means for drawing out and storing the disc tray, driving means for rotating the turntable, and driving means for transferring the optical pick-up apparatus. As these driving means, a motor is usually used.

An example of such a CD player is shown in FIG.

The actuator 112 is mounted on the pickup base 110 to allow the actuator 112 to move inward from the outside of the disc 140 and reproduce the signal helically recorded on the disc 140. A delivery motor 130 for moving 110 was installed.

On the other hand, in the CD player as described above, the conventional pickup base 110 transfer structure, the first guide shaft 120 for precisely maintaining the movement path of the pickup base 110 is installed on the deck, and The pickup base 110 is moved along the guide shaft 120. Since the delivery motor 130 rotates at a high speed, a reduction gear group 132 including a plurality of reduction gears interlocked with the transmission motor 130 is installed in order to reduce the speed and double the force, and the driven gear group 132 is driven. The rack gear 114 engaged with the gear 134 is fixed to one end of the pickup base 110 so that the power of the delivery motor 130 is decelerated to move the pickup base 110 at a low speed.

Therefore, the pickup base 110 is transported along the guide shaft 120 from the lower outer side to the inner side of the disk 140 as the delivery motor 130 is driven, and the actuator 112 mounted to the pickup base 110 together with the pickup base 110. Reproduces the signal recorded on the disc 140. In addition, when the pickup base 110 is returned, the delivery motor 130 rotates in reverse to move the pickup base 110 from the inner bottom of the disk 140 to the outside.

However, such a CD player can only play a single disc, and thus cannot meet the various needs of CD player users. As an alternative to this, a multi-disc playback method for playing a plurality of discs is simply a plurality of disc trays. Is rotated and selectively positioned on one turntable and a pickup device to play or write, and accordingly, a size of a player for accommodating a plurality of rotated turntables is increased, thereby making it impossible to use for personal portable use. .

The present invention has been made to solve the above problems, the object of which is a turntable for rotating the disc tray and the cd on both sides is provided with a pickup device therebetween, the linear reciprocating motion of the pickup device is possible It is coupled to the storage bar interlocked with the screw shaft so that the screw shaft can be rotated 180 degrees by a rotating motor or a turntable driving motor so as to be rotated so that both disks can be selectively played or written according to a user's operation. It is to provide the structure of the CD player that can play the disc.

1 is a view showing the structure of a CD player of the prior art.

2 is a block diagram showing the structure of a CD player capable of playing a double disc to which the present invention is applied.

3 is a detailed structural diagram showing a structure of a CD player according to an embodiment of the present invention.

4 is a flowchart illustrating a process of controlling playback of a CD player to which the present invention is applied.

5 is a detailed structural diagram showing a structure of a CD player according to another embodiment of the present invention.

6 is a detailed structural diagram for rotating two tum tables and one pickup device using one driving motor in the structure of a CD player according to another embodiment of the present invention.

7 is a detailed structural diagram for rotating two termtables and one pick-up apparatus using one up-down turntable driving motor in the structure of a CD player according to another embodiment of the present invention.

8 is a detailed structural diagram showing that the turntable driving shaft is one direction rotation, the other direction idle rotation in the structure of the CD player according to another embodiment of the present invention

9 is a detailed structural diagram for rotating one pickup device using two drive motors in the structure of a CD player according to another embodiment of the present invention.

FIG. 10 is a detailed structural diagram illustrating rotating two temptables using one upturn turntable driving motor in a structure of a CD player according to another embodiment of the present invention.

11 is a structural view of the blade that the pick-up device 250 is fixed when rotating 180 °

<Description of the code | symbol about the principal part of drawing>

200: first disc tray 201: first turntable

210: second disc tray 211: second turntable

250: pickup device 251: first pickup device

252: second pickup device 300: pickup device drive unit

301: first pickup device drive unit 302: second pickup device drive unit

310: retractable bar 320: screw shaft

330: delivery motor 340: driven gear

350: rotating gear group 360: rotating motor

370a, 370b: Turntable gear 380a, 380b: Transmission gear group

381a, 381b: first transmission gear 382a, 382b: second transmission gear

390a, 390b: End gear 395: One-way gear

400: drive control unit 410: operation panel

420: optical signal processing unit 430: bidirectional turntable

500: turntable drive motor (upward) 501: turntable drive motor (upward)

510: turntable up and down drive motor 550: turntable driving unit

600, 600 ': Fixed device 700: Contact surface

In order to achieve the above object, a structure of a CD player capable of playing a double disc according to an aspect of the present invention is arranged such that the rear surfaces thereof face each other at predetermined intervals, and are driven by the driving means (500, 501, 510) of the turntable driving unit 550. A first disk tray 200 and a second disk tray 210 to which the disk seated on the front surface of the 201, 211 rotates; A pickup device (250) disposed between the first disc tray (200) and the second disc tray (210) for reproducing or writing a record of a seated disc; Pick-up device driving unit 300 for performing a posture change to rotate the pickup device 250 toward each disc tray according to the user's selection, and a position change to move to read or write the entire section of the disc; And a driving controller 400 controlling the operation of the pickup device driver 300 and the operation of the turntable driver 550 according to the manipulation of the manipulation panel 410 of the user.

Preferably, the turntable driving unit 550 is composed of a drive motor, turntable gears 370a and 370b and transmission gear groups 380a and 380b.

Preferably, the pickup device driving unit 300 is made of a plurality of outer and the inner box is coupled to one side that is converged to the pickup device 250, the retractable bar 310 that can be contracted and relaxed; A screw shaft 320 having one side fixedly coupled to the innermost portion of the retractable bar 310; A driven gear 340 meshed with the screw shaft 320 to rotate according to the rotation of the driven gear 340 to linearly move the screw shaft 320; And a rotary gear group 350 coupled to the other side of the screw shaft 320 to rotate the screw shaft 320 in conjunction with the rotary motor 360 so that the pickup device 250 rotates 180 °. do.

More preferably, the turntable driving unit 550 and the end gears 390a and 390b connected to the pick-up device 250 are interlocked to rotate the pick-up device 250 by 180 °. That is, the pickup device rotates the gears of the turntable gears 370a and 370b and the transmission gear groups 380a and 380b linked to the shaft connected to the turntable driving motor of the turntable driving unit 550 by rotating the half gears halfway. It is characterized by being rotated 180 ° and optionally fixed toward each disc tray.

More preferably, the pickup device 250 is a first pickup device 251 fixed toward the first disc tray 200 and a second pickup device 252 fixed toward the second disc tray 210. Each pickup device is characterized in that each position change is performed separately due to the first pickup device driver 301 and the second pickup device driver 302.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, according to the present invention, by allowing the rotatable pick-up device to selectively play each disc tray located on both sides, the single-pick-up device can simply implement the double disc playback method, and the user can play the disc in various ways. Although the structure of the CD player capable of playing a double disc can be described as a preferred embodiment, the technical idea of the present invention is not limited to this and can be variously modified and implemented by those skilled in the art.

FIG. 2 is a block diagram showing the structure of a CD player capable of playing a double disc according to the present invention, FIG. 3 is a detailed structure diagram showing the structure of a CD player according to an embodiment of the present invention, and FIG. 4 is a CD player to which the present invention is applied. 5 is a detailed structural diagram illustrating a structure of a CD player according to another embodiment of the present invention, and FIG. 6 is a diagram illustrating one drive in the structure of a CD player according to another embodiment of the present invention. Detailed structure diagram for rotating two tum tables and one pick-up device using a motor and FIG. 7 shows two tum tables using one up-down turntable driving motor in the structure of a CD player according to another embodiment of the present invention. And a detailed structural diagram for rotating one pick-up device and Figure 8 is another embodiment of the present invention In the structure of the CD player according to the detailed structural diagram showing that the turntable driving shaft is one direction rotation, the opposite idle rotation and Figure 9 is a pickup device using two drive motors in the structure of the CD player according to another embodiment of the present invention 10 is a detailed structural diagram illustrating a rotation of two temptables using one upturn turntable driving motor in the structure of a CD player according to another embodiment of the present invention. 11 is a structural view of the blade that the pick-up device 250 is fixed when rotated 180 °.

2 is a block diagram showing a structure of a CD player capable of playing a double disc to which the present invention is applied, FIG. 3 is a detailed structure diagram showing a structure of a CD player according to an embodiment of the present invention, and FIG. 5 is a flowchart illustrating a process of controlling playback of an applied CD player, FIG. 5 is a detailed structural diagram illustrating a structure of a CD player according to another embodiment of the present invention, and FIG. 6 is a diagram of a CD player according to another embodiment of the present invention. Detailed structure diagram showing the first disc tray reproduction in the structure, FIG. 7 is a detailed structure diagram showing the second disc tray reproduction in the structure of the CD player according to another embodiment of the present invention, and FIG. 8 shows another embodiment of the present invention. Detailed structure diagram showing a method using two motors in the structure of the CD player according to the example.

The structure of a CD player capable of playing a double disc according to the present invention includes two disc trays 200 and 210 on which the compact disc is mounted, and turntables 201 and 211 for rotating the compact discs mounted on the disc trays 200 and 210. And the pick-up device 250 for reading the information of the rotating disk, the turntable driving unit 350, the pick-up device driving unit 300 to enable the linear motion and the rotational motion of the pick-up device 250, the drive for controlling the same. The control unit 400 and the operation panel 410 to which the user's operation command is input.

Referring to Figure 2 or 3 in more detail with respect to the structure of the CD player capable of double disc playback according to an embodiment of the present invention,

The first disk tray 200 and the second disk tray 210 face the outside on which the compact disk is seated, respectively, and the rear surfaces of the first disk tray 200 and the second disk tray 210 face each other, and are spaced apart from each other at a predetermined interval.

At this time, the first disk tray 200 and the second disk tray 210 are each covered with a cover so that the compact disk can be seated, each of the first turntable that can rotate the compact disk seated ( 201 and the second turntable 211 are disposed, respectively, and the drive motors 510 capable of rotating the turntables 201 and 211 are connected.

The pickup device 250 is an optical pick-up device that is generally employed, the laser diode for emitting a laser light in order to record / reproduce the image, sound and various information recorded on the disk by irradiating the disk with light emitted from the light source And a diffraction grating positioned in the optical path emitted from the diode, an optical slit reflecting light incident from the diffraction grating at right angles, and connecting the light reflected from the optical slit to form a light spot on the disk. It is preferable that it is an integrated type including an objective lens for irradiating the disk and a photodiode for receiving the optical signal reflected from the disk.

The pickup device driver 300 is mounted on the disc trays 200 and 210 so that the pickup device 250 can read a record of a compact disc rotating along the turntables 201 and 211. Received bar for movement of 250, screw shaft, driven gear, delivery motor, rotary gear group, consisting of a rotating motor.

The retractable bar 310 is configured to accommodate a plurality of outer and the inner casing alternately, the end of the converged side is coupled to one side of the pickup device 250 by shrinkage and relaxation according to a control signal from the disk The position of the pick-up device 250 for reading the record is determined.

The retractable bar 310 is fixedly coupled to the end of the side of the screw shaft 320 is inserted through the outermost band converged, the screw shaft 320 is engaged with the screw shaft 320 to make a linear movement. Driven gear 340 is rotated in conjunction with the transmission motor 330. Therefore, the transmission motor 330 rotates in the clockwise or counterclockwise direction according to the control signal so that the driven gear 340 rotates in the same direction as the transmission motor 330 by rotating the driven motor 330. As the screw shaft 320 engaged with the gear 340 is linearly moved along its rotation direction, the retractable bar 310 is contracted or relaxed so that the pickup device 250 reads the entire section of the disk. It will make a linear motion to produce.

At this time, the other end of the screw shaft 320, the one end is fixed to the receiving bar 310 is fixed to the rotary gear group 350, and this rotary gear group 350 is a rotary motor ( 360, the rotary motor 360 is interlocked with the screw shaft 320 and the retractable bar 310 by interlocking the rotary gear group 350 according to whether the 180 ° rotation control signal is received. The pickup device 250 is rotated 180 degrees. For example, the pickup device 250 facing the first disk tray 200 moves the second disk tray 210 according to a 180 degree rotation control signal. The attitude changes.

Therefore, the record read from each disc is read by the pickup apparatus, and this data is processed by the optical signal processing unit 420.

On the other hand, the position variation and posture variation of the pickup device 250 is transmitted to the pickup device driver 300 the control signal generated by the drive control unit 400 according to the user input of the operation panel 410 that the user operates The process of transmitting the control signal of the drive control unit 400 and the receiving of the control signal of the pickup device driver 300 with respect to the position variation and the attitude change of the pickup apparatus 250 is shown as a flowchart in FIG. 4. have.

In addition, since the pickup device 250 is rotated, it is most ideal to have a round shape. However, it can be modified in any form as long as it does not interfere with the purpose of use. In addition, the pickup device 250 can separate the circuit and the device of each part separately within the general common sense range for reading and writing that is the original purpose can make the pickup device as small as possible. Of course, each of the lines connected to the pickup device 250 can be processed in any manner within the range so as not to be disturbed during rotation and linear movement. For example, wire connecting method using film, rounding through possible lines, and connecting wires into retractable bars are all possible.

Referring to FIG. 4, first, the driving controller 400 receives a deck selection signal according to a user deck selection signal of the operation panel 410 or a disc tray selection by a user directly inserting a disc (S100). ).

Next, the drive control unit 400 receives information regarding the position and attitude of the current pickup device 250 and determines whether the position and attitude of the current pickup device 250 matches the deck selection signal of the user (S102). When the posture of the current pickup device 250 matches the deck selection signal of the user, the turntable driver 350 rotates the corresponding turntable, activates the delivery motor 330 of the pickup device driver 300, and inserts it into the selected disc tray. The pickup apparatus 250 reads out the recorded disk record (S106).

As a result of the determination in step S102, when the pickup apparatus 250 does not match the deck selection signal of the user, the driving controller 400 may turn the other turntable and the pickup apparatus driver 300 through the turntable driver 550. By activating the rotary motor 360 of the screw shaft 320 is rotated 180 ° so that the pickup device 250 is changed posture in the direction of the disk tray selected by the user (S104).

Next, the drive control unit 400 rotates the turntable driving motor 510 of the selected disk tray to rotate the turntable and activates the delivery motor 330 of the pickup device driving unit 300 so that the disk is inserted into the selected disk tray. The recording is made to be read by the pickup device 250 (S106), and the reproduction of the disc is performed (S108).

Next, the driving controller 400 determines whether a new deck selection signal is received from the user through the operation panel 410 (S110), and when receiving the new deck selection signal, returns to step S102. do.

Meanwhile, as another embodiment, referring to FIG. 5, the pickup device 250 and the second pickup device 251 fixed to the first disk tray 200, respectively, of the configuration of the present invention. A second pick-up device 252 fixed toward the disc tray 210, so that each pick-up device is responsible for the disc tray in a fixed direction, respectively, such a first pick-up device 200 and a second pick-up device. The first pickup device driver 301 and the second pickup device driver 302 excluding the rotary gear group 350 and the rotary motor 360 which respectively participate in the rotation operation in the pickup device driver 300, respectively. It is also possible to have each disc play by causing position shift to be performed.

On the other hand, in another embodiment, in the configuration using a single pickup device 250, such pickup device 250 by using the rotational force of one upturn turntable driving motor 500 that can rotate clockwise and counterclockwise. Is rotated toward each of the disc trays 200 and 210 according to a user's selection. The motor is largely referred to as a motor having only one rotation axis (here, the driving motors 500 and 501). There is a motor having a rotation shaft up and down in one motor (here, referred to as an up and down motor 510). There is a bidirectional gear A that rotates together in the turning direction and one-way gears B and C that rotate in one direction only and idle in the opposite direction. One-way gear B rotates clockwise, counterclockwise is idle, C is clockwise, and counterclockwise is rotated in. The details of one-way gear are generally available. As it is known, it is omitted here, where AB is bidirectional gear A or unidirectional gear B, and AC is bidirectional gear A or unidirectional gear C. A. Here, you can use to select either one as required.

Referring to FIG. 10, the first turntable 201 and the second turntable 211 are rotated by one driving motor 500. When the drive control unit 400 selects a turntable to be rotated by the information input through the operation panel 41, the turntable driving unit 550 rotates the first turntable 201 and the second turntable through the rotation direction of the drive motor 500. The 211 can be rotated.

When the driving motor 500 rotates in the clockwise direction, the first turn table 201 connected to the driving motor also rotates in the clockwise direction. The turntable gear 370a also rotates in a clockwise direction, and the engaged first transmission gear 381a rotates in a counterclockwise direction. However, since the first transmission gear 381a is a one-way gear that rotates only in a clockwise direction, the first transmission gear 381a only idles in a counterclockwise direction. When the driving motor 500 is rotated counterclockwise to rotate the second turntable 211 counterclockwise, the turntable gear 370a and the first turntable 201 also rotate counterclockwise, and the turntable gear 370a is rotated. Since the first transmission gear 381a meshed with the first rotation gear 381a rotates in the clockwise direction, the first transmission gear 381a rotates together with the rotation shaft, so that the first transmission gear 381b connected to the same shaft also rotates clockwise. In addition, the turntable gear 370b engaged with the first transmission gear 381b rotates counterclockwise, and the second turntable 211 connected to the same rotation shaft also rotates. Therefore, if there is a compact disc CD in the second turn table 211, it is rotated. At this time, the pickup device 250 operates the rotary motor 360 by the drive control unit 400 to the place where the compact disc CD to be read, and is transferred through the delivery motor 330 to read the compact disc CD.

In this case, although the rotational force is transmitted through the tum table gears 370a and 370b and the first transmission gears 381a and 381b through starvation, when one up and down motor 510 is used, the desired turntable is simply rotated by changing only the rotation direction. You can. In addition, the same effect can be obtained by connecting one driving motor 500 and 501 to the first turn table 201 and the second turn table 211, respectively.

Referring to FIG. 6, a drive motor (500) is used to rotate a table (201, 211) having a CD to be read or written with a single table drive motor (500) and to rotate the pickup device (250) in that direction. 500), the table gears 370a and 370b, the first shear gears 381a and 381b, the second transfer gears 382a and 382b and the end gears 390a and 390b. The pickup device 250 faces the first disc tray 200. At this time, when the turntable driving motor 500 is rotated to the right, the turntable gear 370a and the first turntable 201 connected to the driving motor 500 rotate to the right. The first turntable 201 rotates the CD seated thereon, and the first transfer gears 391a and 381b meshed with the turntable gear 370a rotate in the counterclockwise direction and have a second transfer shaft having the rotating shaft. Gears 382a and 382b also rotate together. Since the second transmission gear 381a is rotatable counterclockwise, the second transmission gear 381a rotates the driven gear 390a. However, driven gear groups 390a and 390b have only one side of gears and one side does not have gears, and thus the gearless part does not rotate because it cannot receive force when it is matched with the upper gear side. Therefore, the driven gear 390a does not rotate but remains stationary, and another driven gear 390b that uses the same rotation shaft as the driven gear 390a does not rotate. As a result, since the pickup device 250 which rotates 180 ° by using the rotational force of the rotary shaft does not rotate and is facing upward, the first turntable 201 rotates the CD seated on the first disc tray 200 and the rotated CD. The pickup device 250 is moved to read. The driving method of the pickup device 250 has been described above, and many of the known items are omitted.

In addition, since the second transmission gear 382b rotates in the clockwise direction like the shaft only and the minimum fixed shaft rotates in the counterclockwise direction, the second transmission gear 382b is engaged with the gear shaft of the middle east gear 390b and does not rotate. The Middle East gears 390a and 390b rotate together when one side rotates with a bidirectional rotary gear. That is, no matter which side the middle gear 390a rotates, the middle gear 390b also rotates in the same direction.

The first transmission gear 381b also rotates counterclockwise. However, even if the tum table gear 370b engaged by the rotation is rotated and the second turn table 211 for rotating the CD in the second disc tray 210 rotates, the pickup device 250 receives the first disc tray 200. ), So it does not affect. However, the driving motor 500 consumes a lot of energy since the power to turn the first turntable 201 is divided to rotate. Therefore, using a rechargeable battery or batteries can reduce the usage time. Therefore, the first transmission gear 381b can be rotated only to the right and is used as a gear that rotates in the counterclockwise direction to the opposite.

In order to operate the cd in the second disc tray 210, the table drive motor 500 may be rotated counterclockwise.

When the tum table driving motor 500 rotates counterclockwise, the tum table gear 370a and the first turn table 201 rotate counterclockwise. The first transfer gear 381a connected to the turntable gear 370a rotates in the clockwise direction, and the first transfer gears 382a and 382b and the first transfer gear 381b connected to the same rotation shaft also rotate in the clockwise direction. Since the second transmission gear 382a rotates in the clockwise direction, the second transmission gear 382a stops and idles when there is a part engaged with the gear.

Since the second transmission gear 382b rotates in the clockwise direction and idle in the counterclockwise direction, the second transmission gear 382b rotates and rotates the end gear 390b engaged therewith. Since the end gears 390a and 390b use the same rotation shaft as described above and are bidirectional gears, the end gears 390b rotate together in the same direction when the end gears 390b rotate. The end gear 390b, which receives the rotating force, rotates by 180 °, which is the rotation angle to the surface on which the gear is cut, and the pickup device 250 connected thereto also rotates by 180 ° and the second disc tray 210. Looking at At this time, the end gear 390a is engaged with the second transmission gear 382a and one of the gears is engaged with the pick-up device 250 as described above when the CD of the first turntable 201 is read by the meshed gear surface. ) Is rotated 180 ° toward the first disc tray 200. In this way, by using the rotational force of one tumble table driving motor 500 can read and work on both sides of the CD.

In addition, the connection between the end gear (390a, 390b) and the rotary gear group 350 of the pick-up device may be directly connected to the end gear shaft, or may be a crown gear, face gear, zerol bevel, spiral bevel, hypoid gear, or screw gear that can change the rotational force. Male, female, worm gears and cog gears can be used if necessary.

As another embodiment, referring to FIG. 7, the up and down driving motor 510 may be used. In FIG. 6, the force of the turntable gear 370a is transmitted through the first transmission gear 381a and the tumtable gear 370b toward the second disc tray 210 is passed through the first transmission gear 381b using the same rotation axis. The second turntable 211 is rotated to rotate the second turntable 211. Even when the up-down driving motor 510 is used without this process, when the up-down driving motor 510 is rotated in the clockwise direction, the pick-up apparatus 250 includes the first disk. When it faces the tray 200 and rotates counterclockwise, the pickup device 250 faces the second disc tray 210. Of course, the second turn table 211 on the side of the second disc tray 210 may be rotated through the shaft connected to the up and down driving motor 510.

At this time, the first transmission gear 381b and the tum table gear 370b may be used as they are or may not be used (or not) to obtain the same effect.

Depending on the direction in which the turntable driving motors 500 and 501 or the up and down motors 510 are driven, both turntables 201 and 211 may rotate on one side but mostly rotate together. In this case, the turntable driving motors 500 and 501 or up and down motors 510 may be excessively moved or waste electricity. It also rotates together, resulting in some noise. In order to prevent this inconvenience, one side rotates in one direction to the turntables 201 and 211 that receive the rotational force indirectly through a plurality of gears, whether directly receiving the rotational force of the driving motor 500, 501 or the up and down motor 510, and one side When the first turntable 201 on the first disc tray 200 is operated clockwise with the one-way gear 395 rotating in the idle direction, the second turn table 211 on the second disc tray 210 side is clockwise. Gears that rotate idling in the direction and rotate counterclockwise prevent this inconvenience.

Meanwhile, the 180 ° rotation of the pickup device 250 using the gear may be applied to a configuration using two turntable driving motors 500 and 501. Referring to FIG. 9, the first turntable driving motor 500 is clocked. When the first turntable 201 is rotated in the clockwise direction, the first turntable driving motor 500 stops in the clockwise direction and receives no rotational force so that the first turntable 201 continues to rotate and the turntable gear 370a also rotates clockwise. If the gear 390a is not engaged, the pick-up device 250 is upward, and the CD reading operation is performed. If the gear 390a is engaged, the gears 390a and 390b are counterclockwise 180 due to the meshed gears. ˚ rotates and the geared end surface of the end gear 390a meets the turntable gear 370a and stops, and the pick-up apparatus 250 rotates 180 ˚ toward the first disc tray 200 by stopping power of the end gear 390a. . At this time, the gear is engaged with the term gear 370b of the end gear 390b.

On the contrary, when the second turntable driving motor 501 rotates counterclockwise, the turntable gear 370b also rotates counterclockwise, and the end gear 390b is engaged with the turntable gear 370b as described above. The pick-up apparatus 250, which was turned toward the first disc tray 200 by the clockwise rotational force of the end gears 390b and 390a, rotates by 180 ° until the cutting plane of the starvation comes out clockwise. 2 is directed toward the disc tray 210.

The rotation of the pickup device 250 and the second turntable 211 using such a gear is a power transmission means for transmitting rotational force using any of the public power transmissions that can produce the same effect such as a belt, a chain, or a rubber ring method. Of course, it is also possible to configure.

11 illustrates the vane fixed by the pickup device 250 when rotated 180 degrees. When the pickup device 250 rotates 180 °, the pickup device may shake. It can also rotate more than 180˚ by the rotational force. In order to prevent such a sudden situation by attaching the fixing device 600 to the occupation device 250 after 180 ° to move to the fixing device 600 'to prevent further rotation. Of course, when rotating in the opposite direction, the fixing device 600 'is moved to the fixing device 600 to prevent further rotation.

In order to prevent the movement more firmly, the fixing device 600 is attached to each other by magnetic force to the contact surface 700 for contact. Of course, one of the fixing device 600 and the contact surface 700 has a magnetic force, and the other one has to be attached to the magnetic body.

Although the structure of a CD player capable of playing a double disc of the present invention has been described and illustrated in the description and drawings as a compact portable CD player, the principles of the present invention are not only portable CD players, but also DVD players, various audio for home and professional use. It can also be applied to the system. It can also be applied to CD_Rw and DVD-CD_Rw that can be written and erased.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to the drawing.

As described above, the structure of a CD player capable of playing a double disc according to the present invention is provided with disc trays on both sides, and the pickup device is positioned therebetween, and interlocked with the screw shaft to enable the linear reciprocating motion of the pickup device. It is coupled to the storage bar, and the screw shaft can be rotated by 180 ° by the rotating motor so that the CD player capable of playing two discs can be easily miniaturized and lightened. There is an effect that can selectively play conveniently.

Claims (9)

A turntable driving unit 550 disposed to be spaced apart from each other by a predetermined interval to face each other, and including a turntable driving motor, a turntable gear, and a transmission gear; A first disk tray 200 and a second disk tray 210 on which the turntable driving unit 550 rotates the disks mounted on the turntable 201 and the front surface; A pickup device 250 which writes and plays back a disc disposed between the first disc tray 200 and the second disc tray 210; Pick-up device driving unit 300 for performing a posture change to rotate the pickup device 250 to each disc tray according to the user's selection, and a position change to move to read the entire section record of the disc; And And a drive controller (400) for controlling the operation of the pick-up device driver (300) according to a user's manipulation panel (410). The method of claim 1, The pickup device driving unit 300 is made of a plurality of outer and the inner box is coupled to one side of the converged to the pickup device 250, the retractable bar 310 that can be contracted and relaxed; A screw shaft 320 having one side fixedly coupled to the innermost portion of the retractable bar 310; A driven gear 340 meshed with the screw shaft 320 to rotate according to the rotation of the driven gear 340 to linearly move the screw shaft 320; And It is coupled to the other side of the screw shaft 320 is coupled to the rotary motor 360 so that the pickup device 250 rotates 180 ° characterized in that it comprises a rotary gear group 350 for rotating the screw shaft 320 The structure of the CD player that can play double disc. The method of claim 1, The turntable driving unit 550 includes turntable driving motors 500, 501 and 510, turntable gears 370a and 370b, transmission gear groups 380a and 380b, and first transmission gears 381a and 381b and second transmission gears 382a and 382b. Structure of a CD player capable of playing a double disc, characterized in that consisting of a combination of. The method according to claim 1 or 2, The turntable gear and the transmission gear rotate by the rotational force of the turntable driving motor of the turntable driving unit 550 to rotate the pick-up device 250 by 180 degrees, and the pick-up apparatus rotates by 180 degrees by selectively rotating the end gear. The structure of a CD player capable of playing a double disc, characterized in that is fixed toward the disc tray of the. The method of claim 1, The pickup device includes a first pickup device 251 fixed toward the first disc tray 200 and a second pickup device 252 fixed toward the second disc tray 210. The structure of the CD player capable of playing a double disc, characterized in that each position change is performed separately by the first pickup device driver 301 and the second pickup device driver 302. The method of claim 4, wherein The end gear is a structure of a CD player capable of playing a double disc, characterized in that the two cut gears are connected to each other on the same shaft. The method according to claim 1 or 2, The turntable (201, 211) is a one-way gear (395) characterized in that the structure of the CD player capable of double disc playback. The method according to claim 1, wherein The structure of the CD player capable of playing a double disc, characterized in that the fixing device 600 is attached to the pickup device (250). The structure of a CD player capable of playing a double disc according to claim 8, wherein the fixing device (600) and the fixing device contact surface (700) of the pick-up device (250) have a magnetic force so as to stick to each other.