KR19990025983A - CD changer structure - Google Patents

Abstract

The present invention is to reduce the manufacturing cost of the CD changer by operating the transfer of the tray of the CD changer and the lifting of the drive unit with one motor.

The present invention is fitted to the drive motor 38 installed on the chassis 10, the loading gear 30 that is rotated by the drive motor 38, and the upper gear 32 formed on the loading gear 30. Rack gear 22 formed on both sides of the lower end of the tray 20 and the lower gear 34 formed in the loading gear 30 is transported to the rack gear 40 to raise or lower the drive unit A CD chucking structure.

The present invention rotates the loading gear 30 with one drive motor 38 to open or insert the tray 20 in the chassis 10 through the rack gear 22, the drive unit through the rack rod 40 Since it is possible to chuck the CD by raising or lowering, the structure required for the chucking of the CD is simple, thereby reducing the number of parts and the assembly process, thereby reducing the manufacturing price of the CD changer.

Description

CD changer structure

The present invention relates to a CD chucking structure of a CD changer, and in particular, a tray for transporting a roulette on which a plurality of CDs are seated, and a drive unit for chucking a CD seated on the roulette by operating a single drive motor, are required for CD chucking. It relates to the CD chucking structure of the CD changer to simplify the structure.

In general, a CD changer is a device for inserting a plurality of CDs inside and reproducing the selected CD by incorporating an optical pickup device for reproducing an optical disc (hereinafter referred to as a CD) which is an optical recording medium.

1 and 2, the CD changer is provided with a roulette 130 for placing a plurality of CD 150 on the tray 120 to selectively rotate at a predetermined angle, the tray 120 ) Is installed to slide and inserted into the chassis 110 forming the frame of the main body so that the CD 150 placed in the roulette 130 can be moved to the position chucked to the drive unit 140 equipped with the optical pickup device. Configured.

As shown in FIG. 2, the roulette 130 is installed to selectively rotate by a drive motor 132 installed on the tray 120 and a gear 134 rotating by the drive motor 132. And the tray 120 is a rack gear 122 is formed on one side, the drive motor 124 and the reduction gear unit 126 installed in the chassis 110 is connected to the rack 122 gears to transfer power, tray The 120 can move from the outside to the inside of the chassis 110.

In addition, the drive unit 140 is raised by the drive motor 142 and the reduction gear unit 144 during the reproduction of the CD 150 to chuck and rotate the CD 150, and is recorded on the CD 150 by the optical pickup device. Play the content.

The operation of the conventional CD changer having such a configuration is, first, when the tray 120 is ejected for regeneration of the CD 150, the control circuit unit drives the driving motor 124 at a constant speed in the reduction gear unit 126. The rack gear 122 of the tray 120, which is decelerated to and engaged with the reduction gear unit 126, is transferred. By the transfer of the rack gear 122, the tray 120 is horizontally transported and drawn out from the chassis 110 to the outside. The roulette 130 installed on the upper side of the tray 120 is also drawn out together with the drawing of the tray 120. As the tray 120 is pulled out, the toggle switch 128 is turned on as the tray 120 is pulled out of the driving motor 124. The ejection of the tray 120 is completed by stopping the driving.

When the plurality of CDs 150 are placed in the roulette 130 installed on the ejected tray 120 and the tray 120 is finely pushed, the tray 120 is inserted and the toggle switch 128 is turned off. In the circuit part, the driving motor 124 is redriven in the reverse direction by the off signal of the toggle switch 128, and the transfer action of the reduction gear unit 126 and the rack gear 122 engaged with the driving motor 124 is engaged. Tray 120 is horizontally transported by the loading.

As such, when the tray 120 is loaded, the tray 120 is positioned above the drive unit 140, and the CD 150 seated on the roulette 130 installed on the tray 120 is chucked to the drive unit 140. Will be in the position. In this case, when the CD to be reproduced is selected, the roulette 130 is rotated by the gear 134 linked to the driving motor 132 so that the CD 150 to be reproduced is positioned above the drive unit 140. Therefore, the driving motor 142 is driven to rotate the reduction gear unit 144, thereby raising the drive unit 140 to chuck the CD 150.

The drive unit 140 reproduces the contents recorded on the CD 150 by the optical pickup device while rotating the chucked CD 150.

Meanwhile, even while the CD 150 is being reproduced, since the tray 120 and the roulette 130 are independent of the CD 150 being reproduced, the tray 120 can be ejected, and the tray 120 is ejected when the tray 120 is ejected. Except for the CD 150, the remaining CD 150 will be replaced.

However, the CD changer may include a drive motor 124 for the transfer of the tray 120, a reduction gear unit 126 for transmitting power of the drive motor 124, and a drive motor for lifting the drive unit 140. 142 and the reduction gear unit 144 for transmitting the power of the drive motor 142 are separately installed, there is a problem that the manufacturing cost of the CD changer increases because the structure is complicated, the number of parts and the number of assembling processes are increased.

The present invention has been made to solve the above problems, it is to reduce the manufacturing cost of the CD changer by operating the transport of the tray and the lifting of the drive unit with a single motor.

The above objects include a roulette for placing a plurality of CDs, a tray on which the roulette is installed to be transported on the chassis of the main body, and a drive unit for chucking the CDs placed in the roulette to reproduce the record. A CD changer, comprising: a drive motor installed on the chassis, a loading gear rotated by the drive motor, rack gears formed on both sides of a lower end of a tray to be engaged with an upper gear formed on the loading gear, and the loading It can be achieved by providing a CD chucking structure of a CD changer configured to include a rack rod that is engaged and transported to the lower gear formed in the gear and to raise or lower the drive unit.

1 is a perspective view showing a typical CD changer.

Figure 2 is a schematic diagram showing a CD chucking structure of a conventional CD changer.

Figure 3 is a schematic diagram showing the CD chucking structure of the CD changer according to the present invention.

4 is a perspective view showing a loading gear of the CD changer according to the present invention.

5 is a schematic view showing the operation of the CD chucking structure according to the present invention;

Figure 6 is a schematic diagram showing the operation of the CD chucking structure according to the present invention.

Figure 7 is a schematic diagram showing the operation of the CD chucking structure according to the present invention.

8 is a schematic view showing the operation of the CD chucking structure according to the present invention;

* Explanation of symbols for main parts of the drawings

10: chassis 20: tray

22: rack gear 24: jamming projection

26: tray open switch 30: loading gear

32: upper gear 34: lower gear

36: pulley 38: drive motor

39: belt 40: rack load

42: chucking completed switch 50: roulette

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

As shown in FIG. 3, the CD changer according to the present invention includes a roulette 50 for placing a plurality of CDs, and a tray on which the roulette 50 is installed to be transported on the chassis 10 of the main body. 20) and a drive unit for chucking the CD settled in the roulette 50 to reproduce the record.

As a structure for transporting the tray 20 and raising the drive unit to chuck the CD, a driving motor 38 installed on the chassis 10 and a loading gear rotating by the driving motor 38 ( 30), rack gears 22 formed on both sides of the lower end of the tray 20 to be engaged with the upper gear 32 formed on the loading gear 30, and the lower gear 34 formed on the loading gear 30. It is meshed with and transported to the rack rod 40 for raising or lowering the drive unit is provided.

As shown in FIG. 4, the loading gear 30 has an upper gear 32 formed in an area where the A (A) section and the ratio (B) section on both sides are combined, and the lower gear 34 is the A section. The upper gear 32 and the lower gear 34 overlap with each other in the A section, but the upper gear 32 is formed on the upper side, and the lower gear 34 is formed on the lower side so as not to overlap. In addition, the pulley 36 is formed at the lower end of the loading gear 30 to be connected to the drive motor 38 installed in the chassis 10 by the belt 39 to receive power, and the rack rod 40 is left and right. The drive unit is configured to be raised or lowered as it is transferred.

In addition, the chassis 10 has a chucking completion switch 42 for controlling the operation of the drive motor 38 by detecting the chucking of the CD in the drive unit by switching by the transfer of the rack rod 40, thereby providing a CD. When the chucking is completed in the drive unit, the optical pickup device mounted in the drive unit is driven to play the CD. In addition, the chassis 10 is provided with a tray open switch 26 which is switched by the transfer of the locking protrusion 24 formed on one rack gear 22 to control the operation of the driving motor 38, thereby providing a tray 20. When is opened, the driving motor 38 is stopped so that the loading gear 30 is no longer rotated.

The tray 20 is provided with a roulette 50 for placing a plurality of CDs, a drive motor and a gear unit for selectively rotating the roulette 50 is installed.

Next will be described the operation of the present invention made as described above.

First, when opening the tray 20 in order to settle the CD in the roulette 50, as shown in Figure 3, by rotating the loading gear 30 in the counterclockwise direction through the drive motor 38, the loading gear ( The rack gear 22 on the left side engaged with the upper gear 32 of 30 is transferred downward so that the tray 20 on which the rack gear 22 is formed is opened to the front of the chassis 10 forming the main body. . When the tray 20 is properly opened from the chassis 10, the engaging protrusion 24 formed on the rack gear 22 contacts and switches the tray open switch 26. As a result, the operation of the driving motor 38 is stopped and the rotation of the loading gear 30 interlocked with the driving motor 38 is stopped, so that the transfer of the rack gear 22 engaged with the loading gear 30 is stopped. Stopped to prevent excessive opening of the tray 20.

Subsequently, a plurality of CDs are placed in the roulette 50 installed in the open tray 20, and when the tray 20 is pushed in, as shown in FIG. 5, the locking protrusions 24 of the rack gear 22 open the tray. As it is separated from the switch 26, power is reapplied to the driving motor 38 to rotate the loading gear 30 counterclockwise again to transfer the rack gear 22 on the right side upward. Accordingly, the tray 20 in which the rack gear 22 is formed is transferred to the inside of the chassis 10 so that the CD placed in the roulette 50 installed in the tray 20 is located above the drive unit.

At this time, when the CD to be reproduced is rotated so that the roulette 50 is located above the drive unit, and the drive motor 38 is rotated counterclockwise, the lower gear 34 installed below the loading gear 30 is rotated. Is engaged with the rack rod 40 to transfer the rack rod 40 to the left. Accordingly, the drive unit connected to the rack rod 40 is raised to chuck the CD to be reproduced.

When the drive unit rises to chuck the CD, the left end of the rack rod 40 contacts and switches the chucking complete switch 42 to stop the operation of the drive motor 38 as shown in FIG. 6. The rotation of the loading gear 30 and the transfer of the rack rod 40 are stopped. The CD is then rotated in the drive unit and the CD's record is played back by the optical pickup device.

When the CD placed in the roulette 50 is to be replaced while the CD is being reproduced as described above, as illustrated in FIG. 7, the driving gear 38 is operated by a separate operation to counterclock the loading gear 30. In the direction of continuous rotation, the rack gear 22 on the left side is engaged with the upper gear 32 of the loading gear 30 so that the rack gear 22 and the tray 20 on which the rack gear 22 is formed are downward. It is transferred and opened to the outside of the chassis 10.

When the tray 20 is properly opened from the chassis 10, the engaging protrusion 24 formed on the rack gear 22 contacts and switches the tray open switch 26. As a result, the operation of the driving motor 38 is stopped and the rotation of the loading gear 30 interlocked with the driving motor 38 is stopped, so that the transfer of the rack gear 22 engaged with the loading gear 30 is stopped. Stopped to prevent excessive opening of the tray 20. At this time, a new CD is exchanged and placed in the roulette 50 installed in the open tray 20.

In order to insert a new CD into the roulette 50 and insert the tray 20 into the chassis 10, as shown in FIG. 8, when the tray 20 is pushed in, the locking projections of the rack gear 22 ( As 24 is released from the tray open switch 26, power is reapplied to the driving motor 38 to rotate the loading gear 30 counterclockwise again to transfer the rack gear 22 on the right side upward. Accordingly, the rack gear 22 and the tray 20 on which the rack gears 22 are formed are inserted into the chassis 10.

On the other hand, in order to replace the playing CD to another one, the drive motor 38 is rotated in reverse to rotate the loading gear 30 in the clockwise direction. Accordingly, the lower gear 34 of the loading gear 30 is engaged with the rack rod 40 to transfer the rack rod 40 to the right to lower the drive unit so that the CD chucked to the drive unit is returned to the roulette 50. To be enshrined. When the rack rod 40 is transferred to the right side, the CD pickup is stopped by the optical pickup device mounted in the drive unit as the rack rod 40 is moved out of the chucking completion switch 42.

Subsequently, the roulette 50 is rotated so that the CD to be reproduced is positioned above the drive unit, and when the CD to be reproduced is positioned above the drive unit, the driving motor 38 is operated in the reverse direction again to load the gear 30. By rotating the counterclockwise again, the rack rod 40 is moved to the left to raise the drive unit to chuck the CD. At this time, the left end of the rack rod 40 is in contact with the chucking completion switch 42 to stop the rotation of the drive motor 38 to stop the rotation of the loading gear 30, the CD in the optical pickup device mounted to the drive unit To play.

When the tray 20 is opened after the CD is regenerated, the driving motor 38 is rotated in reverse to rotate the loading gear 30 clockwise. Accordingly, the lower gear 34 of the loading gear 30 is engaged with the rack rod 40 to transfer the rack rod 40 to the right to lower the drive unit so that the CD chucked to the drive unit is returned to the roulette 50. To be enshrined. When the rack rod 40 is transferred to the right side, the CD pickup is stopped by the optical pickup device mounted in the drive unit as the rack rod 40 is moved out of the chucking completion switch 42.

Subsequently, if the loading gear 30 is rotated in the clockwise direction, as the upper gear 32 of the loading gear 30 transfers the rack gear 22 on the right side downward, the tray on which the rack gear 22 is formed ( 20) is moved downward to open the outside of the chassis (10). When the tray 20 is properly opened from the chassis 10, the engaging protrusion 24 formed on the rack gear 22 contacts and switches the tray open switch 26. As a result, the operation of the driving motor 38 is stopped and the rotation of the loading gear 30 interlocked with the driving motor 38 is stopped, so that the transfer of the rack gear 22 engaged with the loading gear 30 is stopped. Stopped to prevent excessive opening of the tray 20.

Therefore, the CD changer of the present invention can transfer the tray 20 as one drive motor 38 and chuck the CD by raising or lowering the drive unit.

As described above, in the present invention, the rack gears 22 are formed on both sides of the lower end of the tray 20, and the upper gear 32 is formed to be engaged with the rack gears 22 to transfer the rack gears 22. A CD chucking structure having a rack rod 40 which is engaged with and transported to a loading gear 30 and a lower gear 34 formed on the loading gear 30 and raises or lowers a drive unit. Rotate the loading gear 30 with the rack gear 22 to open or insert the tray 20 in the chassis 10, and raise or lower the drive unit through the rack rod 40 to chuck the CD. Since the structure required for the chucking of the CD is simple, the number of parts and the assembly process can be reduced, thereby reducing the manufacturing price of the CD changer.

Claims (4)

A roulette 50 for placing a plurality of CDs, the tray 20 is installed to be transported on the chassis 10 of the roulette 50 is installed, and chucking the CD placed in the roulette 50 In a CD changer structure of a CD changer provided with a drive unit for reproducing a recording, A tray to be engaged with the driving motor 38 installed on the chassis 10, the loading gear 30 rotated by the driving motor 38, and the upper gear 32 formed on the loading gear 30. Rack gears 22 formed on both sides of the lower end of the 20 and the lower gear 34 formed in the loading gear 30 is transported to the rack gear 40 configured to raise or lower the drive unit CD changer structure of the CD changer. The CD chucking structure of the CD changer according to claim 1, wherein the loading gear (30) forms a pulley (36) below and is connected to the drive motor (38) using a belt (39). The CD changer of claim 1, wherein the chassis (10) is provided with a chucking completion switch (42) for switching by the transfer of the rack rod (40) to control the operation of the drive motor (38). Chucking structure. The method of claim 1, wherein the chassis 10 is provided with a tray open switch 26 to be controlled by the transfer of the locking projections 24 formed on one rack gear 22 to control the operation of the drive motor 38. CD changer structure of the CD changer.