KR100369469B1 - Intergrated-clamping type disc cartridge - Google Patents

Abstract

Disclosed disc cartridges include discs; A cartridge case accommodating the disk, the cartridge case including a spindle hole for accommodating the turntable of the spindle motor and an exposed portion for irradiating the disk with a laser beam of an optical pickup; It is integrally formed in the center of the disk, characterized in that it comprises a clamper clamped to the turntable. According to this, the clamper for clamping the disk is provided in the disk accommodated in the cartridge case, thereby reducing the volume of the drive for reproducing the information on the disk or recording the information on the disk, thereby making the product slimmer and smaller. Can be.

Description

Clamper integrated disc cartridge {Intergrated-clamping type disc cartridge}

The present invention relates to a disc cartridge used in the field of optical recording and reproducing for recording and reproducing digital data on a disc.

The disc cartridge is for protecting the disc to prevent contamination (dust, scratching) of the recording surface, i.e., the surface of the disc, so that information can be recorded and / or reproduced without error on the disc.

One typical example of such a disc cartridge is shown in FIG.

As shown, the disc cartridge includes a cartridge case 1 having a predetermined space formed therein for accommodating the disc 10 therein, and a shutter 2 installed to slide in the cartridge case 1. .

A spindle hole 1a is formed at the center of the cartridge case 1 to allow the turntable and the clamper 3 of the drive to enter, and the optical pickup device of the drive is transferred in communication with the spindle hole 1a to transfer the laser beam. An opening 1b for irradiating the disk 10 to the disk 10 is formed.

The shutter 2 selectively opens and closes the spindle hole 1a and the opening hole 1b of the cartridge case 1 so that foreign matter enters the inside of the cartridge case 1 and the user's hand contacts the disk 10. It is to prevent that. This shutter 2 is opened by opening means (not shown) installed in the drive and closed by a torsion spring (not shown).

When such a disc cartridge is inserted into the drive, as shown in FIG. 2, the disc 10 in the cartridge case 1 is chucked to the spindle motor 4 and clamped by the clamper 3.

On the upper side of the spindle motor 4 is provided a turntable 5 on which the disk 10 is seated. At the edge of the turntable 5, a rubber member 5a is provided on the bottom of the disk 10 to prevent slippage of the disk 10. Moreover, the magnet 5b is provided in the upper surface of the turntable 5.

The clamper 3 is provided on an upper surface of the drive, and includes a first member 3a made of an injection molding rotatably installed on the bracket 6, which is insert-molded in the center of the first member 3a and the turntable 5. It consists of a second member 3b attached to the magnet 5b. Here, the second member 3b is made of metal so as to be attached to the magnet 5b.

The conventional disc cartridge as described above will briefly describe the operation of chucking and clamping by the spindle motor 4 and the clamper 3 of the drive.

When the disc cartridge is inserted into the drive, the spindle motor 4 at the lower side of the drive is lifted up and inserted into the spindle hole 1a of the cartridge case 1. At the same time, the clamper 3 descends and enters the spindle hole 1a.

At this time, the turntable 5 of the spindle motor 4 is in contact with the bottom surface of the disk 10, the magnet 5b of the turntable 5 is the second of the clamper 3 lowered through the hole of the disk 10 It comes in close contact with the member 3b. Then, the first member 3a of the clamper 3 is in contact with the hole edge of the disk 10.

However, according to the conventional disc cartridge as described above, since the clamper 3 for clamping the disk 10 seated on the turntable 5 of the spindle motor 4 is provided separately in the drive, the thickness of the drive becomes thick, Accordingly, there is a limit to slimming and miniaturizing the drive.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a disk cartridge having an improved structure to provide a slimmer drive by eliminating the clamper structure of the drive.

1 is a plan view showing a conventional disc cartridge,

2 is a sectional view showing the principal parts of the conventional disc cartridge in a clamping state;

3 is a plan view showing a disc cartridge according to a first embodiment of the present invention;

4A is a cross-sectional view of the disc cartridge of FIG. 3;

4B is a cross-sectional view showing a disc cartridge without a shutter according to the first embodiment of the present invention;

5A and 5B are main cross-sectional views illustrating a clamping state of the disc cartridge of FIG. 3;

6 is a sectional view showing the principal parts of the disk cartridge in a clamping state according to the second embodiment of the present invention;

7 is a sectional view showing the principal parts of the disk cartridge in a clamping state according to the third embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10, 20; Disc 21; Cartridge case

21a; Spindle hole 21b; Exposed part

22, 32, 42; Clamper 23; shutter

24, 42c; Fixing member 24a; Outer part

24b; Inner circumference 24c; Tension lever

25, 35; Spindle motor 36; turntable

26a, 36a; Magnet 42a; Rubber member

42b; Locking member

Disc cartridge of the present invention for achieving the above object, the disk; A cartridge case accommodating the disk, the cartridge case including a spindle hole for accommodating the turntable of the spindle motor and an exposed portion for irradiating the disk with a laser beam of an optical pickup; It is integrally formed in the center of the disk, characterized in that it comprises a clamper clamped to the turntable.

The disc cartridge according to the present invention is further provided with a shutter for selectively opening and closing the spindle hole and the exposed portion of the cartridge case, the foreign matter enters into the cartridge case through the spindle hole when the disc cartridge is not in use and the irradiation part is sharp It will prevent scratching.

The shutters are respectively fixed to the upper and lower surfaces of the cartridge case and configured to slide.

According to this, the clamper for clamping the disk is provided in the disk, thereby reducing the volume of the drive in which the disk cartridge is loaded, thereby making the drive slim, thereby reducing the cost of the product.

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

3 is a plan view showing a disc cartridge according to a first embodiment of the present invention, and FIG. 4 is a cross-sectional view of FIG. 5A and 5B illustrate a state in which the disk of the disk cartridge of FIG. 3 is chucked and clamped.

As shown, the disc cartridge according to the first embodiment of the present invention includes a disc 20 in which information is recorded on its surface, a spindle hole 21a for chucking the disc 20 to a chucking device of the drive, and a drive. A cartridge case 21 having an exposed portion 21b for exposing the recording surface of the disk 20 with an optical pickup device, and a clamper 22 for clamping the disk 20 provided in the center of the disk 20. It is included. In addition, the disc cartridge according to the present invention further includes a shutter 23 for selectively opening and closing the spindle hole 21a and the exposure portion 21b formed in the cartridge case 21.

The exposed part 21b of the cartridge case 21 may be formed in the form of an opening hole so that the laser beam irradiated from the optical pickup device is irradiated onto the disk 20, and the cartridge is a transparent material through which the laser beam can pass. It may be formed integrally with the case 21.

A fixing hole is provided in the center of the disk 20 accommodated in the cartridge case 21. In addition, a fixing groove is formed in the inner circumferential surface of the fixing hole to which the protrusion 22a protruding from the clamper 22 is fixed.

The clamper 22 is a press injection molded insert in the center of the disk 20, the disk 20 is made of a material that is attached to the magnet so as to chuck the chucking device of the drive. The fixing member 24 is fixed to the center of the clamper 22.

The fixing member 24 is a member made of a synthetic resin having a donut shape, and includes an outer circumferential portion 24a and an inner circumferential portion 24b. A plurality of tension levers 24c are formed in the inner circumferential portion 24b at intervals of a predetermined angle, and the shaft 25a of the spindle motor 25 is fitted to this portion when the disc cartridge is loaded.

The shutter 23 is to prevent foreign matter from entering the spindle hole 21a and to prevent scratches on the exposed part 21b made of a transparent material. The spindle hole 21a and the exposed part 21b. Is selectively opened and closed. The shutter 23 is fixed to the upper side and the lower side of the cartridge case 21, respectively, so as to slide in the opposite directions.

5A to 5B are diagrams illustrating a state in which a disc of the disc cartridge according to the first embodiment of the present invention is chucked and clamped.

In the figure, reference numeral 25 denotes a spindle motor, and a turntable 26 on which the disk 20 is seated is provided above the spindle motor 25. In addition, the spindle motor 25 is provided with a rotating shaft 25a which is fitted to the fixing member 24 provided in the clamper 22 of the disk 20 and transmits its rotational force to the disk 20. A magnet 26a attached to the bottom of the clamper 22 is fixed to the center of the upper surface of the turntable 26 so that the disk 20 can be chucked, and the upper surface of the turntable 26 is in close contact with the bottom of the disk 20. The elastic member 26b which prevents slipping of the 20, i.e., rubber is fixed.

6 is a view showing a state in which the disc of the disc cartridge according to the second embodiment of the present invention is clamped and chucked.

As can be seen from the accompanying drawings, the basic structure of this embodiment is made very similar to the first embodiment described above.

That is, in the disc cartridge according to the present embodiment, the disc 20 for recording information, the cartridge case 21 in which the disc 20 is accommodated, the disc cartridge 20 are fixed to the disc 20, and a shaft 32a is formed at the center thereof. A fixed clamper 32 is included.

The shaft 32a fixed to the center of the clamper 32 has a lower end inserted into the shaft hole 36b of the turntable 36 to fix the center of rotation so that the center of the clamper 32 does not shake when the disk 20 rotates. It is for.

The chucking device in which the disc cartridge is chucked as described above is provided at the upper side of the clamper 32 and the spindle motor 35 fixed to the center of the disk 20, and the turntable 36 on which the disk 20 is seated, the turntable. It is provided in the 36 and attached to the bottom of the clamper 32 includes a magnet 36a for transmitting the rotational force of the spindle motor 35 to the disk 20.

7 is a view illustrating a state in which a disk of a disk cartridge is clamped to a clamper according to a third embodiment of the present invention.

The disk cartridge according to the present embodiment is selectively detachably fixed to a disk 10 having a fixing hole in the center thereof, a cartridge case 21 in which the disk 10 is accommodated, and a fixing hole of the disk 10. The motor 25 includes a clamper 42 for clamping the disk 10.

As shown, the clamper 42 has a close contact portion 42a formed by radially extending an upper end thereof so as to closely contact the upper surface of the disk 10. A plurality of locking members 42b having protrusions for selectively attaching and detaching the clamper 42 to the fixing holes of the disc 10 are formed in the close contact portion 42a. In the center of the clamper 42, a fixing member 42c having a fixing hole for clamping the disk 10 to the spindle motor 25 is embedded.

Here, the clamper 42 is attached to the magnet 26a provided on the turntable 26 with a material attached to the magnet 26a to transfer the rotational force of the spindle motor 25 to the disk 20.

Hereinafter, the operation of the disc cartridge and its chucking device according to the present invention as described above will be briefly described.

For example, when the disc cartridge according to the first embodiment is seated in a tray (not shown) and drawn into the drive, the spindle motor 25 provided in the drive is raised. Accordingly, the rotating shaft 25a of the spindle motor 25 is fitted to the inner circumferential portion 24b of the fixing member 24 provided at the center of the clamper 22 of the disk 20, and thus the disk 20 is clamped. . At the same time, the bottom surface of the clamper 22 provided at the center of the disk 20 is attached to the magnet 26a provided at the center of the turntable 26 so that the disk 20 is chucked.

On the other hand, before inserting a general disk cartridge into the disk drive, the clamper 42 separately provided in the fixing hole of the disk 20 accommodated in the cartridge case 21 is fixed.

Then, when the disc cartridge is inserted into the disc drive, the spindle motor 25 provided below in the drive rises.

Accordingly, the disk 20 is clamped as the rotating shaft 25a of the spindle motor 25 is fixed to the fixing member 42c of the clamper 42 fixed to the fixing hole of the disk 20.

Since the disk cartridge has a clamper 22, 32, 42 is integrally provided at the center of the disk 20 contained therein, there is no need to install a separate clamping structure in the drive. Therefore, the thickness of the drive can be reduced.

As described above, according to the present invention, the clamper for clamping the disk is not provided separately in the drive as in the prior art, but is integrally installed with the disk in the center of the disk stored in the cartridge case, so as to reproduce the information of the disk or The advantage is that the drive can be made thinner and smaller by reducing the thickness of the drive for recording information on the disc.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (8)

disk; A cartridge case accommodating the disk, the cartridge case having an exposed portion for irradiating the disk with a spindle hole for accommodating the turntable of the spindle motor and a laser beam for optical pickup; And a clamper formed of a metal material, which is integrally formed with the disk in the center of the disk and clamped to the turntable, and in which a fixing member to which the shaft of the spindle motor is fitted is fixed. cartridge. 2. The clamper integrated disc cartridge according to claim 1, further comprising a shutter for selectively opening and closing the spindle hole and the exposed portion of the case of the cartridge. 3. The clamper-integrated disk cartridge according to claim 2, wherein the shutters are installed to slide on the upper side and the lower side of the cartridge case, respectively, and to be opened and closed in opposite directions. The clamper-integrated disk cartridge according to claim 1, wherein the exposed portion of the cartridge case is made of a transparent material so that the laser beam can pass therethrough. The clamper-integrated disk cartridge according to claim 1, wherein the fixing member comprises an outer circumferential portion and an inner circumferential portion, and a plurality of tension levers are formed on the inner circumferential portion to fix the shaft of the spindle motor fitted thereto. disk; A cartridge case accommodating the disk, the cartridge case having a spindle hole for accommodating the turntable of the spindle motor and an exposure part for irradiating the disk with a laser beam of an optical pickup; A clamper formed integrally with the center of the disk and clamped to the turntable, the clamper having a shaft having a lower end inserted into a shaft hole of the turntable at the center thereof to prevent the center of rotation of the disk from being separated. All-in-one disc cartridge. disk; A cartridge case accommodating the disk, the cartridge case having a spindle hole for accommodating the turntable of the spindle motor and an exposure part for irradiating the disk with a laser beam of an optical pickup; And And a clamper detachably fixed to a top center of the disk and clamped to a turntable of the spindle motor, and a clamper having a fixing member into which a shaft of the spindle motor is fitted. The method of claim 7, wherein the clamper, The clamper-integrated disk cartridge having a plurality of engaging members elastically hooked to the fixing hole in the center of the disk.