KR100727915B1 - A disk cartridge and a disk drive apparatus - Google Patents

Abstract

Disclosed disc cartridge is a shutter for opening and closing the opening hole, the sliding first shutter for opening and closing the opening hole, and the helical through-slot and a rotary type for variable opening and closing of the opening hole along the access area of the recording / reproducing unit A second shutter is provided. According to this configuration, only the area where the pickup is accessed among the opening holes can be opened, thereby reducing the possibility of the disk being contaminated by the inflow of foreign matter such as dust during the recording / reproducing operation.

Description

A disk cartridge and a disk drive apparatus

1 is a view showing a conventional disk cartridge and disk drive device;

2 is an exploded perspective view of the disc cartridge shown in FIG. 1;

3A and 3B are views for explaining a shutter opening process of the disc cartridge shown in FIG. 1;

4 is an exploded perspective view showing a disc cartridge according to the present invention;

FIG. 5 is a view showing a disk cartridge shown in FIG. 4 and a disk drive device to which the disk cartridge is mounted;

6A to 6C are views for explaining the opening of the opening hole by the first and second shutters of the disk disc cartridge shown in FIG. 4;

7A and 7B are views for explaining the cover opening operation of the disc cartridge shown in FIG.

8A to 8E schematically illustrate a process from entry to withdrawal of the disc cartridge and the disc drive device shown in Fig. 5;

<Description of Symbols for Major Parts of Drawings>

100 ... disc cartridge 110,120 ... upper case                 

130 ... 1st shutter 140 ... 2nd shutter

143 Cover 150 Magnetic sensor

200 ... disk drive unit 210 ... pickup

220 ... opening protrusion 230 ... drive gear

240 ... drive motor D ... disc

The present invention relates to a disc cartridge for accommodating a disc which is an information recording / reproducing medium and a disc drive device for recording or reproducing a disc. In particular, the possibility of disc contamination by dust or the like when the shutter is opened for recording and reproducing operations is disclosed. It relates to a disk cartridge and a disk drive device with reduced.

In general, as shown in FIGS. 1 and 2, the disc cartridge 10 accommodates a disk D to be used in the disk drive apparatus 100, and forms an internal space in which the disk D is accommodated. Shutter for selectively opening and closing the lower case 11, 12 and the opening hole 12a formed in the lower case 12 so that the pickup 21 of the disc drive device 20 can access the disc D. FIG. It is comprised including 13. Reference numeral 22 denotes an opening lever installed in the disc drive device 20 to open and close the shutter 13, and one end of the opening lever 22 is inserted as the cartridge 10 enters the disc drive device 20. As shown in FIGS. 3A and 3B, the shutter 13 is opened while being caught and rotated by the latching jaw 13a of the shutter 14.

However, the biggest reason for storing the disk D in the cartridge 10 as described above is to protect the disk D from foreign substances such as dust. That is, if foreign matter such as dust adheres to the surface of the disk D, the higher density disk is more likely to act as a factor to hinder accurate signal processing during recording and playback, and thus, the cartridge ( 10) It is stored inside and used. However, in the disc drive device 20, the shutter 13 must be opened so that the pickup 21 can access the disc D, as described above, and at this time, the opening hole 12a is inevitably opened. The introduction of dust into the cartridge 10 must be taken. By the way, the pickup 21, which accesses the disc D for recording and reproducing information, accesses the desired track on the disc D while moving over the entire length of the disc D, but at each moment the disc is accessed. The area accessing (D) corresponds to a part of the area over the radius. Nevertheless, since the opening hole 12a is formed so as to always open an area over the entire length of the radius from the inner peripheral part of the center side to the outer edge part of the disc D during the recording / reproducing operation, the pickup ( 21) continues to open up to the unnecessary area which is not accessing the disk D. As a result, the possibility of inflow of dust and the like becomes greater due to this unnecessary open space. Therefore, a countermeasure is required to remedy such unreasonable points and to reduce the possibility of dust inflow through the opening hole 12a during the recording and reproducing operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above necessity, and an object thereof is to provide an improved disc cartridge and disc dear device for reducing the possibility of dust inflow from the outside through an opening hole during a recording and reproducing operation.

According to an aspect of the present invention, there is provided a disc cartridge including a case for storing a disc and having one side thereof formed with an opening for accessing the recording / reproducing unit to the disc, and a shutter for opening and closing the opening. And a first shutter through which the shutter opens and closes the entire opening hole, and a second shutter variably opening and closing a part of the opening hole along the access area of the recording / playback unit.

In addition, the disk drive apparatus of the present invention for achieving the above object comprises a sliding first shutter for opening and closing the entire opening hole for access of the recording / reproducing unit to the stored disk, and an access area of the recording / reproducing unit. A disc drive apparatus using a disc cartridge having a rotary second shutter to variably open and close a part of the opening hole, the disc drive device comprising: an opening lever for sliding the first shutter to open as the disc cartridge enters the disc cartridge; An opening protrusion for opening a cover of the disc cartridge which covers the relay gear geared to the second shutter as the entry of the gearbox; a drive gear coupled to the open relay gear to transfer power of a driving source to the second shutter; And a magnet provided in the disc cartridge to detect the rotational position of the second shutter. It characterized in that it comprises a terminal portion which is to come up.                     

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

4 and 5 show a disk cartridge according to the present invention, and a disk drive apparatus in which the disk cartridge is mounted and used.

Referring to the drawings, the disc cartridge 100 of the present invention is the upper and lower cases 110, 120 to form the storage space of the disk (D), and the recording and reproducing unit such as the pickup 210, the disk (D) First and second shutters 130 and 140 are provided to selectively open and close the opening hole 121 formed in the lower case 120 so as to access.

The first shutter 130 is slidably installed in the cases 110 and 120, and is opened by the opening lever 270 when the disc cartridge 100 enters the disc drive device 200. ) Open the whole.

The second shutter 140 is rotatably installed between the disk D and the lower case 120 and includes a spiral through slot 141 extending from the outer circumference of the disk D to the inner circumference. Therefore, the area of the disc cartridge 100 that is opened for access of the pickup 210 is not the entire area of the opening hole 121 even if the first shutter 130 is opened, but the through slot 141 and the opening hole ( 121) are limited to some overlapping areas. When the second shutter 140 is rotated, the overlapping open area A continuously moves from the outer peripheral side of the disk D to the inner peripheral side as shown in FIGS. 6A to 6C. Therefore, the access area may be selectively opened in accordance with the movement of the pickup 210.                     

As the disc shutter 100 enters the disc drive device 200, the second shutter 140 is connected to the driving motor 240 as a driving source and rotates. To this end, the disc cartridge 100 is provided with a power connection means for power connection between the drive motor 240 and the second shutter 140. The power connecting means includes a relay gear 142 geared to the second shutter 140 and a cover 143 for selectively opening one side of the relay gear 142. The cover 143 receives elastic force in the closing direction by the spring 144, and when the disc cartridge 100 enters the disc drive device 200, an opening protrusion installed in the drive device 200 as shown in FIG. 7A. The front end is interfered by the 230 and is opened to expose one side of the relay gear 142. Subsequently, when the disc cartridge 100 is completely entered into the disc drive device 200, the exposed relay gear 142 and the drive gear 230 connected to the drive motor 240 are gear-coupled as shown in FIG. 7B. While being driven between the drive motor 240 and the second shutter 140 is powered.

In addition, the disc cartridge 100 includes a plurality of magnets M1, M2, and M3 installed along the periphery of the through slot 141 as sensing means for recognizing the rotational position of the second shutter 120. Magnetic sensors 150 for detecting magnetic signals of the fields M1, M2, and M3 are provided. The magnets M1, M2, and M3 have an opening hole blocking position (Figs. 8A, 8B, and 8E), the outermost opening position (Fig. 8C), and the innermost opening according to the rotational position of the second shutter 140. One each is installed at a point corresponding to the position (FIG. 8D). Accordingly, the M1 magnet is sensed by the magnetic sensor 150 at the opening hole blocking position (Figs. 8A, 8B, and 8E), and the M2 magnet is the innermost opening position (Fig. 8D) at the outermost opening position (Fig. 8C). M3 magnets are sensed by the magnetic sensor 150, respectively. When the disc cartridge 100 is mounted in the disc drive device 200, the magnetic sensor 150 is connected to the terminal unit 250 provided in the drive device 200, thereby providing a controller of the disc drive device 200. (Not shown) and the signal is connected in a state capable of transmitting and receiving.

In this configuration, before the disc cartridge 100 enters the disc drive device 200, as shown in FIG. 8A, the first and second shutters 130 and 140 block the opening holes 121. have. That is, the first shutter 130 also blocks the opening hole 121, and the second shutter 140 is also positioned at the opening hole blocking position.

When the disk cartridge 100 enters the disk drive apparatus 200, the opening lever 270 (see FIG. 5) first opens the first shutter 130 to the side as shown in FIG. 8B. At the same time, the cover 143 is exposed to one side of the relay gear 142 while being interfered with the opening protrusion 220, and then the drive gear 230 is exposed to the exposed side of the relay gear 142 and gears. Combined. In this case, the magnetic sensor 150 is connected to the terminal unit 250 of the disk drive device 200. However, until this time, since the second shutter 140 is still in the opening hole blocking position, even if the first shutter 130 is opened, the opening hole 121 is in a state similar to that of being blocked.

Thereafter, the driving motor 240 is rotated while the second shutter 140 connected by the driving gear 230 and the relay gear 142 is rotated once. At this time, the magnetic sensor 150 sequentially detects the magnetic signals of the M1 magnet corresponding to the initial opening hole blocking position, the M2 magnet corresponding to the outermost peripheral opening position, and the M3 magnet corresponding to the innermost peripheral opening position, respectively. The controller (not shown) receiving the signal from the magnetic sensor 150 calculates in advance the opening state of the opening hole 121 according to the rotation angle of the second shutter 140.

Subsequently, when the pickup 210 is moved into the disc D area for the recording and reproducing operation, the controller of the disc drive device 200 opens the opening angle 121 and the rotation angle of the second shutter 140 previously calculated. By driving the driving motor 240 based on the state information, as shown in FIG. 8C or 8D, the second shutter 140 is rotated to open the area accessed by the pickup 210. That is, from this time, the opening area is adjusted to allow the pickup 210 to access the disk D while rotating the second shutter 140 according to the movement of the pickup 210. Therefore, although the pickup 210 accesses the disk D as usual, since the area which is opened to the outside is only a part of the opening hole 121 but not a part of the disk D, the dust into the disk cartridge 100 is reduced. Is less likely to flow in, thereby reducing the likelihood of errors in signal processing.

Subsequently, when the recording and reproducing operation is finished and the cartridge 100 is taken out from the recording and reproducing apparatus 200 again, the second shutter 140 is rotated by the driving motor 240 so that the M1 magnet becomes the magnetic sensor 150 as shown in FIG. 8B. Return to the position sensed at, i.e., the opening hole blocking position.

In this state, when the disc cartridge 100 is taken out as shown in FIG. 8E, the cover 143 opened by the opening protrusion 220 is returned to the original position by the spring 144, and the opening lever ( The first shutter 130 opened by 270 is also returned to its original closed position.

Therefore, while smoothly proceeding access of the pickup 210 to the disk (D) accommodated in this way, it is possible to reduce the area of the opening opening to the outside to suppress the inflow of dust through it.

As described above, in the present invention, the shutter for opening and closing the opening hole of the disc cartridge has a dual structure of a slide first shutter and a rotary second shutter, so that only a part of the area where the pickup is accessed is opened to open to the outside. During the operation, the disc can be significantly reduced in contamination by the ingress of foreign matter such as dust.

It is to be understood that the invention is not limited to that described above and illustrated in the drawings and that many more modifications and variations are possible within the scope of the following claims.

Claims (7)

A disc cartridge comprising a case having a disc formed therein and having an opening formed at one side thereof to access a recording / reproducing unit to the disc, and a shutter for opening and closing the opening hole. The shutter, A first shutter for opening and closing the opening hole; And a second shutter for variably opening and closing a part of the opening hole along an access area of the recording and reproducing unit. The method of claim 1, The first shutter is a sliding shutter slidably mounted to the case, The second shutter is a rotatable shutter rotatably installed in the case and having a spiral through slot extending from the outer circumference to the inner circumference of the disk to open only the overlapping portion of the opening hole and the through slot as the rotation is rotated. Disk cartridge. The method of claim 2, And a sensing means for sensing the rotational position of the second shutter. The method of claim 3, The sensing means, A plurality of magnets installed in the second shutter along the periphery of the through slot; And a magnetic sensor for sensing magnetic signals of the magnets. The method of claim 2, And a power connecting means for rotating the second shutter by driving with the drive source provided in the disc drive device. The method of claim 2, The power connection means, A relay gear rotatably installed in the case and gear-coupled with the second shutter and coupled with a drive gear connected to the drive source in the disc drive device; A cover which is installed to be opened and closed in the case and exposes one side of the relay gear so as to be coupled to the drive gear in the disk drive device, and covers the relay gear so as not to be exposed outside the disk drive device. A disk cartridge, characterized in that. A slide first shutter for opening and closing the entire opening hole for access of the recording / reproducing unit to the stored disc, and a rotary second shutter for variably opening / closing a portion of the opening hole along the access area of the recording / reproducing unit. A disk drive device using a disk cartridge, An opening lever for sliding and opening the first shutter as the disc cartridge enters the disc cartridge; An opening protrusion for opening a cover of the disc cartridge which covers the relay gear geared to the second shutter as the disc cartridge enters the disc cartridge; A driving gear coupled to the open relay gear to transfer power of a driving source to the second shutter; And a terminal portion connected to a magnetic sensor provided in the disc cartridge so as to sense a rotation position of the second shutter.

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