KR100344591B1 - Disc cartridge - Google Patents

Abstract

Disc cartridges for DVD-RAM, more specifically disc shutters that employ multiple shutters to open spindle holes and opening holes more widely, for example, allowing 8 cm disc cartridges to be used interchangeably with 12 cm DVD-RAM drives. do. Disc disc disclosed comprises a cartridge case consisting of upper and lower shells having spindle holes and opening holes extended to enter the spindle motor of the 8cm and / or 12cm drive; A multiple shutter comprising at least two members slidably movable relative to the cartridge case to selectively open the spindle ball and the opening hole of the cartridge case; Flexible wire for opening the multiple shutter; An elastic member for returning the multiple shutter; And means for guiding the second shutter member to open while overlapping the first shutter member when the multiple shutter is opened. According to this, since the extended spindle ball and the opening hole are opened while the multiple shutters overlap each other, the shutter does not exceed the left and right ends of the cartridge case at the time of opening. Thus, even when an 8cm disc cartridge is used in a 12cm drive, the cartridge can be safely gripped to record and / or play back information.

Description

Disc cartridge

The present invention relates to a disc cartridge for a DVD-RAM.

As is well known, disc cartridges generally contain a cartridge case made of a synthetic resin that accommodates a disc by preventing contamination of the surface of the disc (dust, fingerprints, scratches, etc.) to record desired information without errors and to protect the recorded information. , Shutter, opening cover, and the like.

The cartridge case is composed of upper and lower shells surrounding the disk, and the upper and lower shells are formed such that an opening hole for accessing the disk with a light beam and a spindle hole for rotating the disk communicate with each other. The shutter is slidably movable in the case so as to open and close the opening hole and the spindle hole of the case. The opening cover is installed to selectively open and close the disk entrance and exit of the case. The cartridge further includes a flexible wire, a spring, and the like for sliding the shutter. The shutter is automatically opened and closed by drawing a cartridge in and out of a drive tray.

Disc cartridges as described above are roughly classified into cartridges containing 8 cm in diameter discs and cartridges containing 12 cm discs.

The small cartridge (ie, 8 cm disc cartridge) has a spindle hole with a diameter of 25 mm. This spindle hole is for seating the disc on the turntable as the cartridge is inserted into the drive.

The diameter of the turntable is usually smaller than the spindle hole of the cartridge, and the spindle hole communicates with and forms an opening hole for securing a transfer path of the optical pickup device to the disk.

Further, a shutter for opening and closing the spindle hole and the opening hole is provided on the front side of the cartridge so as to be slidable. This shutter has a width larger than the diameter of the spindle hole.

In addition, guide grooves are formed on both sides of the cartridge, and escape grooves for evacuating the shutter are provided on the outer surface. Wherein the guide groove is for opening the shutter by inserting the shutter opening and closing member when the cartridge is inserted into the drive, the width of the escape groove is to escape the shutter to the extent that does not interfere with the spindle hole or opening hole. So that the width of the shutter is greater than or equal to.

When the cartridge configured as described above is inserted into the drive, the shutter moves as the guide groove of the cartridge is inserted into the shutter opening and closing member, thereby opening the spindle hole and the opening hole.

Then, as the turntable having a smaller diameter than the spindle hole enters the spindle hole, the disk is seated on the upper surface thereof.

Thereafter, the disk is rotated at a speed that can be recorded or reproduced by the spindle motor, the drive section and the drive circuit section constituting the circuit, the optical pickup device for radiating a semiconductor laser beam on the disk, and the necessary information on the disk Information is recorded and / or reproduced on the disc by the signal processing circuit portion which reproduces.

However, there is a problem in compatibility that the general small cartridge as described above cannot be used in a 12 cm DVD-RAM drive. In other words, the 8cm disc cartridge and the 12cm disc cartridge are not only different in appearance size, but also different in size of the spindle hole into which the drive's spindle motor enters. This is because 8cm drives use spindle motors with a diameter of approximately 20-25mm, whereas 12cm drives use spindle motors with a diameter of 28-30mm, so each drive-only cartridge is also formed according to the diameter of the spindle motor. Because. In other words, the spindle hole of the 8cm disc cartridge is about 25cm, and since the 12cm drive uses a spindle motor of about 30cm in diameter, the spindle motor does not enter the spindle hole of the 8cm disc cartridge and cannot be used in the 12cm drive. will be.

As a simple way to solve the above problems, the spindle hole size of the small cartridge can be extended so that the spindle motor of the 12cm drive can enter, and may be opened and closed using a shutter, in this case, opening and closing the shutter It is inevitable that the shutter will open and close beyond the left and right ends of the cartridge. Therefore, when the cartridge is seated in the drive, the left and right grip portions become unstable by the left and right movement of the shutter, thereby causing a problem of malfunction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object thereof is to provide a disc cartridge which can be used in an 8 cm disc cartridge in a compatible 12 cm DVD-RAM drive.

1 is a rear view showing a disk cartridge according to a first embodiment of the present invention.

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a cross-sectional view taken along line III-III of FIG. 1;

4 is a plan view of FIG.

5A, 5B and 5C are front, side and plan views of the first shutter member of the embodiment.

6A, 6B and 6C are a front view, a side view and a plan view showing a second shutter member of this embodiment.

7A, 7B and 7C are a front view, a side view and a plan view showing a first guide of this embodiment.

8A, 8B and 8C are a front view, a side view and a plan view showing a second guide of this embodiment.

9, 10 and 11 are operation diagrams of this embodiment, 9 is a shutter closed state, 10 is a shutter intermediate open state, 11 is a shutter fully open state.

Fig. 12 is a front view showing the disc cartridge according to the second embodiment of the present invention.

13 is a side view of FIG. 12.

14 is a plan view of FIG. 12.

FIG. 15 is a detailed view of portion A of FIG. 13; FIG.

FIG. 16 is a detailed view of portion B of FIG. 13; FIG.

17A, 17B, and 17C are a front view, a side view, and a plan view showing a first shutter member of this embodiment.

18A, 18B, and 18C are a front view, a side view, and a plan view showing a second shutter member of this embodiment.

19, 20 and 21 are operation diagrams of this embodiment, 19 is a shutter closed state, 20 is a shutter intermediate open state, 21 is a shutter fully open state.

(Explanation of symbols for the main parts of the drawing)

10; cartridge case 11, 12; upper and lower shells

11a, 12a; spindle hole 11b, 12b; opening hole

12c; guide rib 11d; 12d; guide protrusion

20; multiple shutter 21, 22; first and second shutter member

21b; slider groove 21c; rib groove

30; flexible wire 40; elastic member

50; first guide 52; guide slider

55; guide groove 60; second guide

65; guide groove 80; seat

111c, 112c; first guide groove 111d, 112d; second guide groove

111e, 112e; rib guide groove 111f, 112f; third guide groove

111g, 112g; Fourth guide groove 121b; Move guide

121c; bending guide piece 121d; bending end

122b; Moving guide groove 122d; Fixed piece

122e; Guide rib 151; Fixed groove

Disc disk according to the present invention for achieving the above object, the cartridge case consisting of upper and lower shell having a spindle hole and opening hole extended to enter the spindle motor of the 8cm and / or 12cm drive; A multiple shutter comprising at least two members slidably movable relative to the cartridge case to selectively open the spindle ball and the opening hole of the cartridge case; Flexible wire for opening the multiple shutter; An elastic member for returning the multiple shutter; And means for guiding the second shutter member to open while overlapping the first shutter member when the multiple shutter is opened.

The shutter opening guide means may include: a first guide fixed to and installed on an inner upper portion of the second shutter member, a front end of which is connected to one end of a flexible wire, and a rear end of which is connected to one end of an elastic member; A second guide fixed to the inner front of the first shutter member by a screw and configured to move the first shutter member by contacting the first guide when the second shutter member moves; Means for guiding movement of said first shutter member and supporting said first shutter member from being disengaged from said cartridge case; And means for guiding movement of the second shutter member and supporting the second shutter member so as not to be completely separated from the first shutter member.

The first shutter member supporting means includes a guide rib formed in the upper portion of the lower shell of the cartridge case along a length direction, a guide groove formed in the second guide at a position corresponding to the guide rib, and the upper and lower portions of the cartridge case. And guide ribs protruding from the lower side of the shell, and rib grooves respectively formed in the first shutter member at positions corresponding to the guide protrusions.

The second shutter member supporting means includes a guide rib formed along the longitudinal direction of the lower shell of the cartridge case, a guide groove formed in the first guide at a position corresponding to the guide rib, and the first guide. A guide slider protruding to both sides of the front upper end of the slider, and a slider groove formed in the first shutter member at a position corresponding to the guide slider.

Disc disk according to the present invention as described above, the spindle ball and the opening hole is expanded to a sufficient size for the spindle motor of the 8cm and 12cm disk driver can enter, and the extended spindle ball and the opening hole overlap the multiple shutters As it opens, the shutter does not exceed the left and right ends of the cartridge case when opened. Thus, even when an 8cm disc cartridge is used in a 12cm drive, the cartridge can be safely gripped to record and / or play back information.

Best Mode for Carrying Out the Invention Preferred embodiments of the present invention will now be described based on the accompanying drawings.

1 is a front view showing a disc cartridge according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a sectional view taken along the line III-III of FIG. And FIG. 4 is a plan view of FIG. 1, showing an 8 cm disc cartridge.

In the drawings, reference numeral 10 is a cartridge case, 20 is a multiple shutter, 30 is a flexible wire, 40 is an elastic member, 50 is a first guide, and 60 is a second guide.

As shown in the drawing, the cartridge case 10 is formed by abutting the upper and lower shells 11 and 12 of a predetermined size so as to form a space for accommodating the disk D therein. The upper and lower shells 11 and 12 include spindle holes 11a and 12a into which a spindle motor (not shown) of a drive enters, and opening holes 11b and 12b which are transfer paths of an optical pickup device. It is formed in communication. Here, the spindle holes 11a and 12a and the opening holes 11b and 12b are large enough to allow the spindle motor of the 12 cm drive to enter.

The multi-shutter 20 is at least slidably installed with respect to the cartridge case 10 so as to selectively open the spindle holes 11a, 12a and the opening holes 11b, 12b of the cartridge case 10. It consists of two members 21 and 22. The multiple shutter 20 is opened while the second shutter member 22 overlaps the inside of the first shutter member 21. Therefore, while fully opening the extended spindle holes 11a, 12a and the opening holes 11b, 12b, one side of the shutter does not escape to the outside of the cartridge case.

As shown in FIGS. 5A, 5B, and 5C, the first shutter member 21 is formed of a body 21a having a longitudinal section of a '∩' shape, and on the side and the bottom of the body 21a, a slider groove ( 21b) and the rib groove 21c are formed, respectively, and the screw hole 21d is formed in the upper surface front part.

6A, 6B, and 6C, the second shutter member 22 is formed of a body 22a having the same shape as the first shutter member 21, but is opened when the first shutter member 21 is opened. Since it overlaps to the inside of the) is formed slightly smaller in consideration of this. On the upper surface of the body 22a, two screw holes 22d are formed at regular intervals. In addition, the position of the screw hole (22d) is down-set to a predetermined depth, so that the head of the screw does not protrude when the screw of the guide described later.

The first guide 50 is fixed and installed on the inner upper portion of the second shutter member 22 with a screw 70. One end of the flexible wire 30 is connected to the front lower end of the first guide 50, and one end of the elastic member 40 is connected to the rear of the first guide 50.

As shown in FIGS. 7A, 7B and 7C, the first guide 50 is a guide slider 52 inserted into the slider groove 21b of the first shutter member 21 at the front upper end of the body 51. Is protruded on both sides. In addition, the front lower end of the body 51 has a flexible wire connection portion 53, the rear is an elastic member connection portion 54. And the guide groove 55 is formed in the side surface of the body 51, the screw hole 56 is formed in the upper surface of the body 51. Here, the position of the screw hole 56 is recessed to a predetermined depth so as to coincide with the down-set of the second shutter member 22.

As shown in FIG. 2, the guide groove 55 is inserted into the guide rib 12c formed in the upper portion of the lower shell 12 along the length direction to guide the left and right movement of the second shutter member 22. Done.

In addition, a guide protrusion inserted into the rib groove 21c at a position corresponding to the rib groove 21c of the first shutter member 21, more specifically, at the lower side of the upper shell 11 and the lower shell 12. 11d and 12d are respectively protruded to guide the left and right movement of the first shutter member 21 and to prevent the shutter member 21 from being separated from the cartridge case 10.

The second guide 60 is fixed and installed at the inner upper front of the first shutter member 21 with a screw 70. The second guide 60 moves together with the first shutter member 21 at some point by contacting the first guide 50 of the second shutter member 22 when the second shutter member 22 moves. To be.

As shown in FIGS. 8A, 8B, and 8C, the second guide 60 as described above has a locking jaw portion 62 formed at a front upper end of the body 61, and a lower shell 12 at a side of the body 61. Guide grooves (65) through which guide ribs (12c) are inserted are formed, and the upper surface of the body (61) has a structure in which a screw hole (66) is formed.

The first guide 50 and the second guide 60 described above provide a means for guiding the second shutter member 22 to be opened while overlapping the first shutter member 21 when the multiple shutter 20 is opened. In this configuration, the shutter opening guide means, which is a main part of the present invention, performs movement of the first shutter member 21 when the multiple shutter 20 moves in addition to the first guide 21 and the second guide 60 described above. The guide and the means for supporting the first shutter member 21 not to be separated from the cartridge case 10, the second shutter member 22 is guided while guiding the movement of the second shutter member 22. It further comprises a means for supporting so as not to be completely separated from the first shutter member 21.

The first shutter member supporting means protrudes on the guide rib 12c of the lower shell 12, the guide groove 65 of the second guide 60, and the lower side of the upper and lower shells 11 and 12. Guide ribs 11d and 12d, and rib grooves 21c formed in the first shutter member 21, and the second shutter member supporting means is formed with the guide ribs 12c of the lower shell 12. And a guide groove 55 of the first guide 50, a guide slider 52 of the first guide 50, and a slider groove 21b formed in the first shutter member 21. Since each of the components constituting the first and second shutter member supporting means has already been described with reference to the first and second guides, a detailed description thereof will be omitted.

In FIG. 1, reference numeral 30a denotes an operation protrusion and 80 denotes a protective sheet. The actuating projection 30a comes into contact with the shutter opening and closing member in the drive when the cartridge is inserted into the drive. While the cartridge is continuously drawn in, the actuating projection 30a is caught by the shutter opening and closing member in the drive, so that the flexible wire 30 is pulled first to move the second shutter member 22 to the left in FIG. To start. The second shutter member 22 and the first shutter member from the time when the first guide 50 of the second shutter member 22 moved thereafter contacts the second guide 60 of the first shutter member 21. As the 21 moves together, the spindle hole and the opening hole of the cartridge are opened. Referring to FIGS. 9, 10, and 11 to which the above action is attached, the following description will be made.

9, 10 and 11 are the operation diagrams of the embodiment, 9 is a shutter closed state, 10 is a shutter intermediate state, 11 is a shutter fully open state.

In the initial state of FIG. 9, the spindle holes 11a and 12a and the opening holes 11b and 12b of the cartridge are closed by the first and second shutter members 21 and 22. As shown in FIG. This is because the second shutter member 22 is elastically supported in the right direction in the drawing by the elasticity of the elastic member 40, and the guide slider 52 of the first guide 50 coupled to the second shutter member 22. Is inserted in the state caught by the rear end side of the slider groove 21b formed in the first shutter member 21. Therefore, the first and second shutter members 21 and 22 do not open unless an external force is applied.

When the cartridge in the initial state as described above is inserted into the drive, as shown in FIG. 10, the multiple shutter starts to open.

Initially, the second shutter member 22 directly connected to the flexible wire 30 starts to move while overcoming the elasticity of the elastic member 40 by pulling the flexible wire 30. At this time, the first shutter member 21 does not move. Continuous movement of the second shutter member 22 causes its first guide 50 to come into contact with the second guide 60 of the first shutter member 21 and the first shutter member 21 also starts to move. . The guide slider 52 of the second shutter member 22 is in close contact with the front end of the slider groove 21b of the first shutter member 21, and the second shutter member 22 is disposed inside the first shutter member 21. ) Are overlapped. That is, from this point, the two shutter members 21 and 22 start to move together in an overlapping state. At this time, the spindle holes 11a and 12a and the opening holes 11b and 12b are half open.

By continuously drawing in the cartridge, the first and second shutter members 21, 22 overlapped as described above continue to move and finally open completely, as shown in FIG. As shown in the figure, the shutters 11 and 12 are located in the cartridge without leaving the outside of the cartridge even when the spindle holes 11a and 12a and the opening holes 11b and 12b are completely opened.

As described above, the disc cartridge according to the present invention opens the spindle hole and the opening hole in such a size that the spindle motor of the 12 cm drive can fully enter, but the shutter does not go beyond the left and right width of the cartridge. Thus, even a 12-cm DVD-RAM drive can safely hold the cartridge to record and / or play information.

After the information is recorded and / or reproduced in the above state, when the disc cartridge is taken out, the multiple shutters return to their original initial positions by the elasticity of the elastic member 40. At this time, since the elastic member 40 is directly connected to the second shutter member 22 at first, the second elastic member 22 starts to move to the right side in FIG. 11. The first shutter member 21 is the second shutter member 22 when the guide slider 52 of the second shutter member 21 contacts the rear end of the slider groove 21b of the first shutter member 21. It begins to move with the movement of. The first shutter member 21 moving as described above stops when the guide protrusions 11d and 12d formed in the cartridge case come into contact with the tip of the rib groove 21c at the lower portion thereof.

When the first and second shutter members 21 and 22 move left and right as described above, they are moved while being guided by guide means disposed in place, that is, the first shutter member support means and the second shutter member support means. The shutter can be moved smoothly without being separated from the cartridge case.

12 is a front view showing a disc cartridge according to a second embodiment of the present invention, FIG. 13 is a side cross-sectional view of FIG. 12, FIG. 14 is a plan view of FIG. 12, FIG. 15 is a detailed view of portion A of FIG. 13, and FIG. 16 is a detailed view of portion B of FIG. 13, and FIGS. 17A, 17B, and 17C are front, side and plan views showing the first shutter member of the present embodiment, and FIGS. 18A, 18B, and 18C show the second shutter member of the present embodiment. As a front view, a side view and a plan view shown, a disc cartridge according to a second embodiment of the present invention will be described with reference to this.

As shown in the figure, the basic configuration in this embodiment is made very similar to the above-described first embodiment. Therefore, for convenience of description, the reference numerals added with '1' before the reference numerals used in the drawings for the first embodiment will be described. For example, in this embodiment, the reference numeral for the cartridge case is 110. In the same manner, reference numeral 120 denotes a multiple shutter, 130 a flexible wire, and 140 an elastic member.

As shown, the cartridge case 110 is formed by abutting the upper and lower shells 111 and 112 of a predetermined size so as to form a space for accommodating the disk D therein. The upper and lower shells 111 and 112 include spindle holes 111a and 112a into which a spindle motor (not shown) of a drive enters, and opening holes 111b and 112b serving as transfer paths of an optical pickup device. It is formed in communication. Here, the spindle holes 111a and 112a and the opening holes 111b and 112b have a sufficient size to allow the spindle motor of the 12 cm drive to enter.

The multi-shutter 120 is installed at least slideably with respect to the cartridge case 110 so as to selectively open the spindle holes 111a, 112a and the opening holes 111b, 112b of the cartridge case 110. It consists of two members 121 and 122. The multiple shutter 120 is opened while the second shutter member 122 overlaps the inside of the first shutter member 121. Therefore, one side of the shutter does not deviate to the outside of the cartridge case while fully opening the extended spindle holes 111a and 112a and the opening holes 111b and 112b.

As shown in FIGS. 17A, 17B, and 17C, the first shutter member 121 is formed of a body 121a having a longitudinal section of a '∩' shape. The 2nd guide 160 which consists of a pair of bending pieces to be bent and formed is integrally formed. In addition, at the rear end side of the upper surface of the body 121a, a moving guide piece 121b formed bent downward is formed, and a pair of bending guide pieces 121c formed and bent inwardly from the side upper side of the body 121a are formed. The bent end 121d is formed at the lower end of the body 121a. Here, the bending guide piece 121c and the bending end portion 121d are used to guide the movement of the first shutter member 121, and the bending guide piece 121c and the bending end portion 121d are positioned at positions corresponding to the bending guide piece 121c and the bending end portion 121d. As illustrated in FIGS. 15 and 16, the upper and lower shells 111 and 112 are formed with first guide grooves 111c and 112c and second guide grooves 111d and 112d, respectively.

And, the second shutter member 122 is made of a body 122a having the same shape as the first shutter member 121, as shown in Figure 18a, 18b and 18c, when opening the first shutter member ( Since it overlaps the inner side of 121) is formed slightly smaller in consideration of this. The upper surface of the body 122a is formed with a movement guide groove 122b into which the movement guide piece 121b formed on the upper surface of the first shutter member 121 is inserted, and both ends of the movement guide groove 122b. Adjacent to the upper projection 122c by embossing is formed. In addition, a pair of fixing pieces 122d, which are bent and formed inwardly, are formed on both side upper portions of the body 122a, and side guide ribs 122e formed by embossing are formed on the inner bottom of the body 122a, respectively. .

The second guide 150 is fixed and provided to the fixing piece 122d of the second shutter member 122 as described above. The second guide 150 is provided with fixing grooves 151 corresponding to the fixing piece 122d on both side surfaces thereof, and guide sliders 152 are formed on the upper and lower portions, respectively. One end of the flexible wire 130 is connected to the front portion of the second guide 150, and one end of the elastic member 140 is connected to the other end thereof. Therefore, the second guide 150, that is, the second shutter member 122 is moved to the left side in the drawing with respect to the cartridge case by the flexible wire 130 is pulled, and in the drawing by the restoring force of the elastic member 140 Move to the right. The side guide ribs 122e of the second shutter member 122 and the upper and lower guide sliders 152 of the second guide 150 are used to guide the movement of the second shutter member 122. 15 and 16, rib guide grooves 111e and 112e, third guide grooves 111f and 112f, and fourth are respectively disposed in the upper and lower shells 111 and 112 at the corresponding positions. Guide grooves 111g and 112g are formed, respectively.

The operation of the disc cartridge according to the second embodiment of the present invention having the configuration as described above will now be described with reference to Figs. 19, 20 and 21.

19, 20 and 21 are operation diagrams of the embodiment, 19 is a shutter closed state, 20 is a shutter intermediate state, and 21 is a shutter fully open state.

As shown in Fig. 19, in the initial state, the spindle holes 111a, 112a and the opening holes 111b, 112b of the cartridge are closed by the first and second shutter members 121, 122. In this regard, the movement guide piece 121b of the first shutter member 121 is hung on the front end side of the movement guide groove 122b formed in the second shutter member 122. As a result, the first shutter member 121 and the second shutter member 122 are connected to each other with a predetermined width.

When the cartridge of the initial state as described above is inserted into the drive, as shown in FIG. 20, the flexible guide 130 is pulled and the first guide 150 to which the flexible wire 130 is connected is moved to the left in the drawing. Begin to move. That is, the second shutter member 122 starts to move. In the drawing, an intermediate open state, that is, a state in which the second shutter member 122 overlaps the inside of the first shutter member 121. At this time, since the external force (external force by the flexible wire) acts only on the second shutter member 122, the first shutter member 121 does not move.

The first shutter member 121 starts to move from the point when its tip contacts the second guide 160 of the first shutter member 121 by the movement of the second shutter member 122. That is, the first shutter member 121 is moved from a certain point of time by the movement of the second shutter member 122.

21 shows a state in which the shutter is completely opened by the above-described moving process. As shown in the drawing, the second shutter member 122 overlaps the first shutter member 121 and is completely moved to the left in the drawing. Accordingly, the spindle holes 111a and 112a and the opening holes 111b and 112b of the cartridge are completely open, so that the spindle motor of the drive enters and seats the disk therein.

On the other hand, at the time of withdrawal of the cartridge, the first shutter member and the second shutter member are closed from the drive by closing the first shutter member and the second shutter member in the reverse operation at the time of retraction.

Such a disc cartridge according to the second embodiment of the present invention is not significantly different in structure and operation and effect from the case of the first embodiment described above, but the second embodiment is a separate fastening member, for example, Without using a fastening member such as a screw, and fixing it by using a fixed piece that is bent and formed integrally with the shutter member, the second guide is also bent a part of the first shutter member without using a separate member. By using it, the side effect of reducing the number of parts can be obtained.

As described above, the disc cartridge according to the present invention, the spindle ball and the opening hole is expanded to a sufficient size for the spindle motor of the 8cm and 12cm disk driver can enter, and the extended spindle ball and the opening hole is multi-shuttered Since the openings overlap each other, the shutter does not exceed the left and right ends of the cartridge case when opening. Thus, even when an 8cm disc cartridge is used in a 12cm drive, the cartridge can be safely gripped to record and / or play back information. That means 8cm disc cartridges can be used interchangeably with 12cm DVD-RAM drives.

In the above, a preferred embodiment of the disc cartridge according to the present invention has been illustrated and described. However, the present invention is not limited to the above-described embodiments, and various changes can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes are intended to fall within the scope of the claims.

Claims (7)

A cartridge case consisting of upper and lower shells having spindle holes and opening holes extended to enter a spindle motor of an 8 cm and / or 12 cm drive; A multiple shutter comprising at least two members slidably movable relative to the cartridge case to selectively open the spindle ball and the opening hole of the cartridge case; Flexible wire for opening the multiple shutter; An elastic member for returning the multiple shutter; And And means for guiding the second shutter member to open while overlapping the first shutter member when the multiple shutter is opened. The shutter opening guide means, A first guide fixed to and installed on an inner upper portion of the second shutter member, a front end of which is connected to one end of the flexible wire, and a rear end of which is connected to one end of the elastic member; A second guide fixed to the inner upper front of the first shutter member by a screw and allowing the first shutter member to move by contacting the first guide when the second shutter member moves; Means for guiding movement of said first shutter member and supporting said first shutter member from being disengaged from said cartridge case; And And means for guiding movement of said second shutter member and supporting said second shutter member such that it is not completely separated from said first shutter member. The method of claim 1, wherein the first shutter member supporting means comprises a guide rib formed along the longitudinal direction of the upper portion of the lower shell of the cartridge case, a guide groove formed in the second guide at a position corresponding to the guide rib, And a rib groove formed in each of the upper and lower shells of the cartridge case, the guide protrusions respectively protruding from each other, and rib grooves formed in the first shutter member at positions corresponding to the guide protrusions. The method of claim 1, wherein the second shutter member support means is a guide rib formed along the longitudinal direction in the upper portion of the lower shell of the cartridge case, a guide groove formed in the first guide at a position corresponding to the guide rib, And a slider slider protruding to both sides of the front upper end of the first guide, and a slider groove formed in the first shutter member at a position corresponding to the guide slider. A cartridge case consisting of upper and lower cells having a spindle hole and an opening hole extended to enter a spindle motor of an 8 cm and / or 12 cm drive; A multiple shutter comprising at least two members slidably movable relative to the cartridge case to selectively open the spindle ball and the opening hole of the cartridge case; Flexible wire for opening the multiple shutter; An elastic member for returning the multiple shutter; And And means for guiding the second shutter member to open while overlapping the first shutter member when the multiple shutter is opened. The shutter opening guide means, It is fixed and installed on the inner upper portion of the second shutter member by a pair of fixing pieces bent inwardly of the first shutter member, one end of the flexible wire is connected to the front, and one end of the elastic member is connected to the rear. A first guide; A second guide bent and formed downward from an upper end of the first shutter member to move the first shutter member by contacting the tip of the second shutter member when the second shutter member is moved; Means for guiding movement of said first shutter member and supporting said first shutter member from being disengaged from said cartridge case; And And means for guiding movement of said second shutter member and supporting said second shutter member such that it is not completely separated from said first shutter member. The method of claim 4, wherein the first shutter member supporting means is formed in a pair of bending guide pieces which are bent and formed inwardly from both side surfaces of the tip of the first shutter member, and formed in upper and lower shells at positions corresponding to the bending guide pieces. A disc cartridge comprising a first guide groove, a bent end formed at a lower end of the first shutter member, and a second guide groove formed at upper and lower shells at positions corresponding to the bent ends. 5. The method of claim 4, wherein the second shutter member supporting means comprises: a movement guide groove formed on an upper surface of the second shutter member, a movement guide piece bent and formed in the first shutter member at a position corresponding to the movement guide groove; And a guide rib formed to protrude inwardly on the lower side of the second shutter member, and rib guide grooves formed in upper and lower shells at positions corresponding to the guide ribs. 7. The guide slider according to any one of claims 4 to 6, wherein the guide sliders are respectively provided at upper and lower portions of the first guide at a predetermined interval, and the third and fourth guide grooves for receiving and guiding the guide sliders are provided. Disc cartridge characterized in that formed in the corresponding position of the upper, lower shell.