JP3313562B2 - Disk cartridge and disk device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge capable of accommodating and exchanging a disk for recording and reproducing information, such as an optical disk and a magneto-optical disk, and to record and reproduce information using the disk cartridge. Related to disk devices.

[0002]

2. Description of the Related Art Disk cartridges (hereinafter abbreviated as cartridges) are used to record or reproduce information at a high density. Therefore, during storage or operation by a person, the disk is exposed to dust or fats and oils due to human operations. Protected. When recording or reproducing information in the disk device, the disk is exposed by moving the shutter of the cartridge to open the opening of the disk.

In the case of a CD-ROM, a disk is loaded into a drive device by a single disk, or a disk is housed in a cartridge called a caddy as described in, for example, JP-A-6-68641. . this
The CD caddy opens and closes the top cover to change the disc, but as an example of a cartridge that can change the disc,
For example, in the cartridge described in Japanese Patent Application Laid-Open No. H5-242626, the bottom of the opposite side of the shutter is rotatable, and this is used as a disk insertion / ejection point.

[0004] When the above-mentioned cartridges are stored or loaded into a disk drive, the cartridge body and a part of the opening / closing member attached to the body become a locking member and are locked. When the disc is replaced, the locking member is unlocked and the opening / closing member is opened.
Then, the disc is replaced and inserted into the cartridge, the opening / closing member is closed, and the locking member is locked to the cartridge.

[0005] In the above-mentioned conventional example, it is not possible to determine the history of disk replacement. However, as a method for determining the history, for example, a method of bonding and sealing the lid and the case with tape or the like can be considered. However, according to this method, the tape once removed can be easily reattached, and the reliability of the determination is lacking.

[0006]

In the above-mentioned prior art, the disc can be replaced any number of times. For example, if the disc is a disc capable of recording and reproducing on both sides and both sides of the disc are A side and B side, In addition, there may be a situation in which the discs and the cartridges A and B face each other due to disc replacement. In that case, in the disk device, AB
Since the surface determination needs to be used as the determination information, the information recorded on the disk must be read. In this case, there is a problem that it takes time from when the cartridge is loaded into the disk device to when the disk device completes the surface determination and becomes ready for recording / reproducing. Also,
The person who uses the disk cannot determine whether the disk has been replaced or how the A side and B side have been loaded, or the disk has been replaced by another person, and as a result, incorrect recording / reproduction of information -There was a problem when erasing was performed.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, an object of the present invention is to maintain and manage a disk replacement history, that is, whether a cartridge has been replaced even once by a person or a disk device. An object of the present invention is to provide an excellent cartridge and a disk device using the same.

[0008]

In order to achieve the above object, the present invention provides a cartridge in which a sealing piece for sealing a lock mechanism of an opening / closing member is formed. The structure cannot be released. With such a structure, to determine the person using appearance, sensor for detecting the presence or absence of Futomehen in the disk apparatus, readily if the disk has been replaced in the cartridge using a switch or the like, sealing The pieces also serve as discriminating members.
It will help .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing a cartridge of the present invention. The cartridge 1 includes a disc 2 on which information is recorded or reproduced, an upper case 3 containing the disc 2,
It is composed of a lower case 4, an opening / closing lid 5, a shutter 6 for opening and closing the opening 3a of the case and 4a located opposite to the opening 3a, and a plate 7 for suppressing protrusion of a corner of the shutter 6. The upper case 3 and the lower case 4 are vertically bonded to each other, and are rotatably supported so as to sandwich the shaft 5a of the opening / closing lid 5 vertically. The upper case 3 and the lower case 4 constitute a hole 1a for fitting with the locking piece 5b. The figure shows the locking piece 5b and the hole 1a
Is released, the opening / closing lid 5 is opened, and the disk 2 is projected from the cartridge 1. The upper case 3, the lower case 4, and the opening / closing lid 5 are formed of a material having elasticity such as plastic.

FIG. 2 is a plan view of the cartridge. The figure shows a state where the opening / closing lid 5 is attached to the cartridge 1. In the following description, the upper case 3 will be described, but since the lower case 4 has a shape symmetrical to the upper case 3, the description is omitted. The shutter 6 is urged by a tension spring 8 included in the cartridge 1 during storage and when not in use, pressed against the wall 3b of the upper case 3, and closing the opening 3a. When the cartridge 1 is inserted into the recording / reproducing apparatus to exchange information, the shutter 6 is slid by the loading mechanism of the apparatus in a direction opposite to the biasing direction of the tension spring 8, and the surface of the disk 2 is opened through the opening 3a. Is exposed. An inner wall 3c having a diameter slightly larger than the outer diameter of the disk 2 is formed on the upper case 3 so that dust from the moving part of the shutter 6 and projections 5c of the opening / closing lid 5 allow the dust from the hole 1a and the dust from FIG. The intrusion of the broken sealing piece 1b into the cartridge 1 is prevented.

FIG. 3 is a partial sectional view of the cartridge.
This figure shows the shape of the cartridge 1 in which the disk exchange has not been performed yet. Cartridge 1 of sealing piece 1b
The locking piece 5b of the opening / closing lid 5 is locked to the end face of the hole 1a in such a state that the elastic force is applied to the opening 5a, and the opening / closing lid 5 is locked to the cartridge 1, and the disk 2 shown in FIG. ing.

FIG. 4 is a partial perspective view of the cartridge.
This figure shows the shape of the cartridge 1 in which the disk exchange has not been performed yet as in FIG. The inside of the hole 1a of the cartridge 1 is occupied by a sealing piece 1b integrally formed from the lower case 4, but three sides of four corners of the hole 1a have appropriate clearances.

Next, the operation at the time of disk replacement will be described.
FIG. 5 shows a state in which the sealing piece 1b shown in FIG. 1 has been broken from the state shown in FIG. Since the sealing piece 1b is thin with respect to the lower case 4, stress is concentrated on a connection portion between the sealing piece 1b and the lower case 4 by pushing or pulling out the fragments by the above-described method, and the breakage is easily caused. it can. FIG. 6 shows a state in which the locking piece 5b facing from the hole 1a is pushed in from the state of FIG. 5 using a pen point, the tip of a driver, or the like. Since the locking piece 5 is formed of an elastic plastic or the like, the locking piece 5 is elastically deformed by being pushed in, the locking with the hole 1a is released, and the opening / closing lid 5 is pulled out from this state as shown in FIG. State. In this state, the disc 2 shown in FIG. 1 is replaced and inserted into the cartridge 1, and the opening / closing lid 5 is closed until the locking piece 5b is locked in the hole 1a as shown in FIG. I do.

As described above, once the disk is exchanged, the history of the disk exchange can be easily determined from the appearance of the cartridge 1, such as the trace of the broken sealing piece 1b. Also in the disk device, an ON / OFF switch or a sensor such as a push switch is arranged at a position corresponding to the trace of the broken sealing piece 1b, and the disc replacement history can be determined by detecting the presence or absence of the sealing piece 1b. it can. This
As a result, the sealing piece also serves as a discriminating means.
Can be.

Next, another embodiment will be described. FIG. 7 is a perspective view of a cartridge showing another embodiment. In the above embodiment, the sealing piece is arranged on the side surface of the cartridge, but may be on the upper surface or on any surface as shown in the figure. It is desirable to detect similarly. Further, the shape of the sealing piece is not particularly limited, and the opening / closing lid is not limited to the rotary type, and a method of opening and closing the upper lid or a method of sliding the side surface may be used.

FIG. 8 is a partial sectional view of the cartridge.
In this example, the sealing piece 1b is a column integrated with the upper case 3, and is pressed from the outside and broken together with a part of the lower case 4. The cylinder may be arranged at a position where the disk can be inserted and removed, and the disk cannot be inserted or removed unless the cylinder is broken.

FIG. 9 is a partial plan view of the cartridge.
When the opening / closing lid 5 is pulled out, the sealing piece 1b, which has been closed in the hole 1a, is slid by the connecting piece 5d connected to the opening / closing lid 5 to open the hole 1a, and when the opening / closing lid 5 is further pulled out, the connecting piece 5d becomes It is torn and broken. Even if the cover 5 is closed after the disc is replaced, the sealing piece 1b does not slide because there is no connecting piece 5d, so that the hole 1a remains open.

In addition to the above embodiment, the protection of the disk surface
From the viewpoint of it had a clean, Paste the cleaning member to the inner surface of the disc slot of the cartridge, may be configured to clean the surface of the disk by contacting the disk with the cleaning member during the disk exchange.

[0020]

According to the present invention, a person or a disk device can easily determine whether or not a cartridge has been replaced even once, thereby preventing a person from erroneously recording, reproducing, or erasing information. , Disk devices are also recorded early
It has the effect of being able to make it reproducible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cartridge showing one embodiment of the present invention.

FIG. 2 is a plan view of a cartridge showing one embodiment of the present invention.

FIG. 3 is a partial sectional view of a cartridge showing one embodiment of the present invention.

FIG. 4 is a partial perspective view of a cartridge showing one embodiment of the present invention.

FIG. 5 is a partial perspective view of a cartridge showing one embodiment of the present invention.

FIG. 6 is a partial perspective view of a cartridge showing one embodiment of the present invention.

FIG. 7 is a partial perspective view of a cartridge showing one embodiment of the present invention.

FIG. 8 is a partial sectional view of a cartridge showing one embodiment of the present invention.

FIG. 9 is a partial plan view of the cartridge showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cartridge, 1b ... Sealing piece, 2 ... Disk, 3 ... Upper case, 4 ... Lower case, 5 ... Opening / closing lid, 5b ... Locking piece.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor: Jichiro Nagai 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture, Japan Multimedia Systems Development Division, Hitachi, Ltd. (56) References JP-A-9-106645 (JP) JP-A-5-242626 (JP, A) JP-A-2-128385 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 23/00

Claims (1)

(57) [Claims] 1. A disk cartridge comprising a case for storing a recording medium on which information is recorded and reproduced, an opening / closing lid for opening and closing a part of the case, and a locking piece for locking the opening and closing of the opening / closing lid. A disk, further comprising a sealing piece for sealing elastic deformation for releasing the locking of the locking piece, wherein a history of taking in and out of the recording medium is determined based on the presence or absence of the sealing piece. cartridge.