JPH05303814A - Magnetooptical disk device - Google Patents

Abstract

(57) [Summary] [Purpose] Turn the case of the magnetic disk medium upside down,
Provided is a magneto-optical disk device which does not damage or destroy the magnetic recording portion of the magnetic disk medium even if it is erroneously inserted into the accommodation part of the magneto-optical disk device which handles the magneto-optical disk medium. [Structure] Only a correct disc medium having a built-in magneto-optical disc is accommodated in the accommodating portion 1 close to the external magnetic field generating portion 3 for magneto-optical recording.
Allows insertion up to 0 loading position. On the other hand, in order to prevent the different disk medium 200 having a built-in magnetic disk from being inserted at an intermediate position of the accommodating section 10 and prevent the magnetic recording section of the magnetic disk from being damaged by the external magnetic field generating section, erroneous insertion preventing configurations 5, 6, 7, 8, 9, 12 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a disk medium having substantially the same outer dimensions and different case bodies,
The present invention relates to a magneto-optical disk device capable of correctly mounting only a normal disk medium having a built-in magneto-optical disk and preventing erroneous insertion of a different disk medium having a built-in magnetic disk or the like.

[0002]

2. Description of the Related Art A 3.5-inch magneto-optical disk medium of a magneto-optical disk device has an outer shape substantially similar to that of the 3.5-inch magnetic disk medium, and is built in a case body having a different thickness and chamfer forming portion. Has been done. Figure 6 (a)
Is an external perspective view of a 3.5-inch magnetic disk medium, (b)
FIG. 3 is an external perspective view of a magneto-optical disk medium. In this figure, the 3.5-inch magnetic disk medium is a resin case 20.
0, the magnetic disk 205 is rotatably incorporated therein, and the shutter 210 is opened and closed at the time of insertion and removal. The chamfered portion 200c is provided at the right corner of the case 200.
Is formed so as to prevent reverse insertion from the front and back, and a pair of recesses 200e is formed on the back surface of the case 200 so that, for example, a hooking portion at the time of automatic chucking of the case 200 can be provided. Also case 200
Has a thickness t of about 3 mm.

On the other hand, the magneto-optical disk medium has the above-mentioned 3.5.
The external shape is substantially the same as that of the inch magnetic disk medium, and the magneto-optical disk 25 is rotatably built in the resin case 20, and the shutter 21 is opened and closed at the time of insertion and removal. A chamfered portion 20c is formed at the left corner to prevent reverse insertion from the front and back, and a pair of recesses 20 is formed on the back surface of the case 20.
By forming e, it is possible to provide a hooking portion at the time of automatic chucking of the case 20, and the thickness dimension T of the case 20 is about 6 mm, which is approximately twice that of a 3.5 inch magnetic disk medium. Has a thickness of.

Although the magneto-optical disk medium having the above-described configuration has substantially the same outer shape as that of the 3.5-inch magnetic disk medium, since the chamfered portions 200c and 20c are formed at the positions opposite to each other, In a magneto-optical disk device handling a magneto-optical disk medium, for example, by providing an opening / closing mechanism of the shutter 21 having a function of engaging with the chamfered portion 200c of the 3.5-inch magnetic disk medium, a 3.5-inch magnetic disk Prevents erroneous insertion of disk media. Further, the case 20 of the magneto-optical disk medium is 3.
Since the thickness of the 5-inch magnetic disk medium is nearly double that of the case 200, it cannot be inserted through the insertion opening of the 3.5-inch accommodating portion, so that it will not be erroneously inserted.

[0005]

[Problems to be Solved by the Invention] However,
When the case 200 of the 3.5-inch magnetic disk medium is turned upside down and inserted into the accommodating portion of the magneto-optical disk device that handles the magneto-optical disk medium, the chamfered portion 200c turns into the case 2
As a result of matching with the chamfered portion 20c of 0, it is inserted as it is. Even if the incorrectly inserted magnetic disk medium is promptly ejected, the magneto-optical disk apparatus has a strong external magnetic field generating portion of 200 Oersteds or more for magneto-optical recording arranged near the magneto-optical disk mounting portion. Since it is provided, there is a problem that the magnetic recording portion of the magnetic disk medium is damaged or destroyed by the external magnetic field generating portion.

Therefore, the magneto-optical disk apparatus of the present invention has been made in view of the above problems, and its purpose is to handle a magneto-optical disk medium by reversing the case of the magnetic disk medium. An object of the present invention is to provide a magneto-optical disk device that does not damage or destroy the magnetic recording portion of the magnetic disk medium even if it is inserted into the housing portion of the disk device by mistake.

[0007]

In order to solve the above-mentioned problems and achieve the object, a magneto-optical disk device of the present invention has the following configuration. That is, of the disk media having a case body that has substantially the same outer dimensions and in which only the chamfered portion at the insertion end is formed at the left and right positions, only the positive disk medium containing the magneto-optical disk is used for magneto-optical recording. Of the external magnetic field generation unit to the loading position of the accommodation unit, while preventing the insertion of a different disk medium containing a magnetic disk at an intermediate position of the accommodation unit, the external magnetic field generation unit magnetically records the magnetic disk. Erroneous insertion preventing means for preventing damage to parts is provided.

Further, preferably, the erroneous insertion preventing means is guided by a guide portion formed by continuously forming an inclined surface portion formed in the vicinity of the side wall of the accommodating portion, and is guided in the inserting / removing direction of the disk medium by the guide portion. Along with the slide body, which is provided with a latching portion that latches on a side surface portion on the insertion side of the disk medium, the slider is moved in a direction substantially orthogonal to the inserting / removing direction and one end abuts on the inclined portion, and the other end is It is composed of an infiltration member that infiltrates or presses against the concave portion of the side surface of the case body, and an urging means that urges the sliding body to move against the insertion direction of the disk medium.

[0009]

With the above structure, the erroneous insertion preventing means acts so that only the positive disk medium containing the magneto-optical disk can be inserted up to the loading position of the accommodating portion near the external magnetic field generating portion for magneto-optical recording. The erroneous insertion preventing means acts so as to prevent the insertion of the different disk medium containing the magnetic disk at the middle position of the accommodating section, and the external magnetic field generating section serves to prevent the magnetic recording section of the magnetic disk from being damaged.

Further, the erroneous insertion preventing means is such that, when the primary disk medium is inserted into the accommodating portion, the intruding member of the sliding body sneaks into the concave portion of the primary disk medium by the inclined surface portion, and the urging means of the urging means. While moving to the mounting position against the biasing force, when the different disk medium is inserted into the accommodating portion, the infiltration member of the sliding body presses against the surface portion of the different disk medium by contacting the inclined surface portion. In the locked state, the sliding member is prevented from moving against the urging force of the urging means and further insertion is prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings, regarding a configuration example in which erroneous insertion preventing means is provided on one side of a housing portion of a magneto-optical disk device. Figure 1
FIG. 3A is a plan view showing a main portion of a magneto-optical disk device equipped with an erroneous insertion preventing means in a cutaway manner, and FIG. In the figure, the main body 1 of the magneto-optical disk device has a case 20 having the above-mentioned predetermined thickness dimension, for inserting and removing the magneto-optical disk medium containing the magneto-optical disk in the direction of arrow I in the figure. The housing portion 10 is formed between the housing portion 10 and the upper cover body 2. An inclined groove 2a is continuously formed in the upper cover body 2 as shown in (a), while the shirt opening / closing pin 4 is formed in the inclined groove 2a.
The shutter 21 is opened when the magneto-optical disk medium is inserted and closed when the magneto-optical disk medium is ejected.

A strong external magnetic field generating section 3 for magneto-optical recording is arranged at a substantially central portion of the upper cover body 2 so that it can act on the recording section after mounting the magneto-optical disk medium. There is. The above is the basic configuration of the magneto-optical disk device, and the insertion / removal of the magneto-optical disk medium is possible with the above configuration. Next, a configuration example of the erroneous insertion preventing means will be described with reference to the drawings. In the vicinity of the side wall of the housing portion 10, as shown in FIG. The inclined surface portion 7, the guide passage 6 continuously formed from the inclined surface portion 7, and the guide groove 5 shown by the broken line in FIG. Has been done. The guide passage 6 is formed continuously in the opening 1h of the main body 2, and the opening 1h is provided in a state in which a return spring 12 is stretched on a sliding body 8 described later.
It is inserted from h so that it can be set at a predetermined position in the guide passage 6.

The sliding body 8 guided in the longitudinal direction of the guide passage 6 abuts against the end portions 20p and 200p which are the heads when the cases 20 and 200 are inserted, and slides the sliding body 8 into the cases 20 and 200. Hook 8a that moves with insertion
The guide convex portions 8b guided by the guide groove 5 are provided on both sides, and the guide portion for guiding the moving pin 9 in the direction of arrow J in the drawing is integrally formed of resin, for example.

FIG. 2 is an enlarged view of FIG. 1 (b) and shows a state in which the case 200 of a different magnetic disk is erroneously inserted into a locked state. With reference to FIG. 1 and FIG. 2 again, the sliding member 8 has a hook portion 8 at one end of the return spring 12.
e, a guide hole portion 8k of the moving pin 9, and a stopper portion 8d for locking the upper end of a compression spring 19 built in the moving pin 9 and biasing the moving pin 9 against the inclined surface portion 7 described above. Are formed.

The other end of the return spring 12 is hooked on the hook 1e of the main body 1 so that the guide 8a of the slide member 8 contacts the right end 5a of the guide groove 5. The sliding body 8 is urged to move. In the configuration described above, when the disk medium is not mounted in the magneto-optical disk device, the sliding body is moved toward the entrance side of the housing portion 10 by the urging force of the return spring 12 as shown in FIG. The pin 9 is in contact with the lower surface of the inclined surface portion 7, and the arrow I
Wait for the disk medium to be inserted from the direction.

Next, FIG. 3 (a) is a plan view showing a cutaway main part of the magneto-optical disk device of FIG. 1 after mounting the magneto-optical disk medium, and FIG. 3 (b) is a side view thereof. is there. In this figure, since the magneto-optical disk medium is to be mounted, when the case 20 is inserted in the direction of arrow I, the sliding body 8 is locked to the end 20p of the case 20 from the state of FIG. The slide body 8 is moved in the arrow K direction with the insertion movement due to the contact of the portion 8a. At the time of this movement, the moving pin 9 rides on the inclined surface portion 7 and enters the concave portion 20e of the case 20, so that the sliding body 8 is moved to the position shown in FIG. 3B, and the magneto-optical disk medium is moved. Set to the mounting position. Further, the shutter of the magneto-optical disk medium is simultaneously opened by the shutter opening / closing pin 4. Then, when the magneto-optical disk medium is ejected, the sliding body 8 is brought into the state of FIG. 1 by the pulling action of the extending return spring 12.
As described above, the magneto-optical disk medium is set to the regular mounting position.

On the other hand, FIG. 4 (a) is a plan view showing a main part of the magneto-optical disk device shown in FIG. 1 after the magnetic disk medium is erroneously mounted, broken away, and FIG. 4 (b) is a side view thereof. .. In this figure, if the magnetic disk medium is turned upside down, the formation position of the chamfered portion will coincide with the curse 20 of the magneto-optical disk as described above. From this state, when the case 200 of the magnetic disk is inserted from the direction of the arrow I, the latching portion 8a of the sliding body 8 comes into contact with the end portion 200p of the case 200 from the state of FIG. The moving body 8 is moved in the arrow K direction. At the time of this movement, the moving pin 9 rides on the inclined surface portion 7, but the tip end 9h of the moving pin 9 is pressed against the back side of the recess 200e of the case 200, and the locking state shown in FIG. Become. As a result, the case 200 cannot be inserted further into the housing portion 10 inside.

At this time, as shown in FIG. 4A, the case 200 has an end portion 200p at a distance H from the external magnetic field generator 3.
Since the magnetic disk is not affected by the magnetism of the external magnetic field generator 3, the magnetic disk storage environment can be set to 50 erst or less. By pulling out the case 200 in the direction opposite to the arrow I from the above locked state,
The standby state of FIG. 1 can be achieved.

Next, FIG. 5 is an external perspective view of the sliding body.
This is a configuration example in which the above-mentioned moving pin 9 is integrally formed with a sliding body. In this figure, the moving pin 9 is formed integrally with the sliding body 8 by resin molding, and instead of the compression spring 19 for pressing the moving pin 9 against the inclined surface portion 7, the sliding body 8 is formed.
The moving pin 9 is formed by integrally providing a spring portion 8f extending from the. By integrally forming in this way, the number of parts can be reduced and the assembly can be simplified. It is possible to operate as described above by using the sliding body 8 formed of the integral resin.

In the above embodiment, the erroneous insertion preventing means arranged on one side of the accommodating portion is described only for the pure mechanical structure. However, for example, the difference in the thickness of the case is electrically determined. It goes without saying that the detecting means for detecting and the actuator connected to the detecting means may be provided at the entrance of the accommodating portion so that only the magneto-optical disk medium can be inserted to the mounting position.

[0021]

As described above, according to the present invention, even if the case of the magnetic disk medium is turned upside down and the magnetic disk medium is erroneously inserted into the accommodating portion of the magneto-optical disk device which handles the magneto-optical disk medium, the magnetic disk medium is It is possible to provide a magneto-optical disk device which does not damage or destroy the magnetic recording part of the above.

[Brief description of drawings]

FIG. 1A is a plan view showing a main part of a magneto-optical disk device equipped with an erroneous insertion preventing means in a cutaway manner, and FIG. 1B is a side view thereof.

FIG. 2 is an enlarged view of FIG. 1 (b).

3 (a) is a plan view showing a main part of the magneto-optical disk device of FIG. 1 after mounting a magneto-optical disk medium, in a cutaway plan view, and FIG. 3 (b) is a side view thereof.

4 (a) is a plan view showing a fractured part of a main part after a magnetic disk medium is erroneously mounted in the magneto-optical disk device of FIG. 1, and FIG. 4 (b) is a side view thereof.

FIG. 5 is an external perspective view of a sliding body.

6A is an external perspective view of a 3.5-inch magnetic disk medium, and FIG. 6B is an external perspective view of a magneto-optical disk medium.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 main body, 2 upper cover plate, 3 external magnetic field generation part, 4 shutter opening / closing pin, 5 guide groove, 6 guide passage, 7 inclined surface part, 8 sliding body, 9 moving pin, 10 housing part, 12 return spring, 19 compression spring , 20 magneto-optical disk case, 200 magnetic disk case.

Claims (2)

[Claims] 1. A disk medium having a case body having substantially the same outer dimensions and having a chamfered portion at an insertion end formed in left and right positions, and only a positive disk medium containing a magneto-optical disk is light The external magnetic field for magnetic recording can be inserted up to the loading position of the accommodating section near the external magnetic field generating section, and a different disk medium having a built-in magnetic disk is prevented from being inserted at an intermediate position of the accommodating section so that the external magnetic field generating section allows the magnetic disk to be inserted. An erroneous insertion preventing means for preventing damage to the magnetic recording part of the magneto-optical disk device. 2. The erroneous insertion preventing means includes a guide portion formed by continuously forming an inclined surface portion formed in the vicinity of a side wall of the accommodating portion, the guide portion being guided in the inserting / removing direction of the disc medium, and the disc medium. A sliding body provided with a latching portion for latching on a side surface portion on the insertion side of the case, one end abutting on the inclined portion while being moved in a direction substantially orthogonal to the inserting / removing direction, and the other end being a side surface of the case body. 2. A sneaking member that sneaks or presses against the concave portion of the disk, and urging means that urges the sliding body to move against the insertion direction of the disk medium. Magneto-optical disk device.