JPH0766618B2 - Optical disk cartridge - Google Patents

Description

The present invention relates to an optical disk cartridge having an optical disk housed inside a case.

[Conventional technology]

In a cartridge for a floppy disk (3.5 inch floppy disk) with a diameter of 86 mm (hereinafter referred to as a 3.5 ″ FD cartridge), such a floppy disk has a width standardized by the US standard proposal (ANSI X3B8 / 86-57). 90m
It is built in a case measuring m, 94 mm long, and 3.3 mm thick. On the other hand, an optical disc with a diameter of 80 to 90 mm also has a width of 90 mm or 9 mm.
The standardization of optical disk cartridges is recommended by housing them in a case with a thickness of 4.4 mm and a thickness of about 6 mm or 8 mm.
(ISO, SC23) In the information processing device that reproduces these two types of discs, the 86 mm floppy disc information processing device has an opening because the optical disc cartridge is thicker than the 3.5 ″ FD cartridge. However, it is possible to accidentally insert the 3.5 ″ FD cartridge in the information processing device for the optical disc due to the large opening. In such a case, it is possible that the optical head for reading signals, the disk rotating portion, etc. inside the information processing apparatus may be damaged, and it is important to prevent this from occurring.

Conventionally, there is no technology directly related to such a problem. However, as something close to this, for example, JP-A-53-7
FIG. 3 of Japanese Patent Publication No. 1806 shows a protective cover, that is, a cartridge in which both ends are cut off in an oblique shape. This cartridge has a structure in which a video record disc, which is a disc, is built-in and protected, and only the record disc is removed when the record disc is inserted into the reproducing apparatus. As another example, Japanese Patent Application Laid-Open No. 57-86167 describes a cartridge for storing an information disk (that is, a disk). An object of the present invention is to prevent the cartridge from being inserted at an angle. Therefore, a roll bar that is slidable from a direction perpendicular to the cartridge insertion direction is provided to hold the cartridge, thereby preventing the oblique insertion. is doing.

[Problems to be solved by the invention]

However, among the above-mentioned conventional techniques, in the invention of Japanese Patent Laid-Open No. 53-71806, the operation, effect, etc. of two oblique cut-off portions (hereinafter referred to as oblique portions) provided in the cartridge are described. There is no explanation of the above, and the slanted portion is merely provided to bring the shape closer to the disc-shaped video record disc.
Further, these slanted portions are provided on the side opposite to the cartridge insertion direction and have nothing to do with erroneous insertion prevention of a different type cartridge.

Further, although the invention of Japanese Patent Laid-Open No. 57-86167 achieves the prevention of the oblique insertion of the cartridge, it does not relate to the prevention of the wrong insertion of the different type cartridge.

As described above, the prior art has not shown any means for effectively preventing the insertion of a different type cartridge.

The object of the present invention can be clearly distinguished from a 3.5 ″ FD cartridge having a substantially equal width, and when a 3.5 ″ FD cartridge is erroneously inserted into an information processing device for an optical disc, this can be prevented. Another object of the present invention is to provide an optical disk cartridge in which means for preventing the above can be easily provided in an information processing apparatus for optical disks.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention is a front edge side which is a front position of an optical disk case in the insertion direction when the information writing / reading device is inserted in a proper posture, and is 3.5 ″. At the corner in the opening movement direction of the shutter member for opening the opening opposite to the FD case, with respect to the side edge of the optical disk case perpendicular to the front edge or the front edge. 45 ° inclined portion, and the inclined portion has an opening force applied to the shutter member to open the closed portion at the front edge of the optical disk case. The force applying portion is formed on the opposite side with respect to the center line which passes through the center of the optical disk case and is perpendicular to the front edge thereof.

[Action]

When the optical disk cartridge of the present invention and the 3.5 ″ FD cartridge are compared with each other by aligning the front and back sides and the directions so that they are inserted into the same information processing apparatus for the optical disk, the front side with respect to the insertion direction into these information processing apparatuses. On the front edge side, which corresponds to the position, the positions of the slanted portions are on the left and right sides, and it is possible to determine at a glance whether these cartridges are of different types.

Since the 3.5 ″ FD cartridge is thinner than the optical disk cartridge and the widths of these cartridges are almost equal, the 3.5 ″ FD cartridge can be inserted into the information processing apparatus for the optical disk. However, as described above, since the positions of the slanted portions are different between the optical disc cartridge and the 3.5 ″ FD cartridge, a stopper is provided on the slanted portion side of the optical disc cartridge that is inserted in the correct posture. As a result, it becomes possible to easily prevent the insertion of the 3.5 ″ FD cartridge.

Further, when a stopper or the like is provided in the information processing device for the optical disc as described above, in the optical disc cartridge of the present invention, the above-mentioned slanted portion is provided at the corner in the opening movement direction of the shutter member that opens the opening of the case. Since it is provided, the force applied to the shutter member by the driving means to open the opening of the case is on the case on the opposite side to the inclined portion.
The drive means of the shutter member may be provided on the side opposite to the stopper, which facilitates the configuration and arrangement of the drive means.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of an optical disk cartridge and an erroneous cartridge mis-insertion preventing mechanism according to a first embodiment of the present invention. FIG. 2 is a view showing the back surface of FIG. In these figures, 100 is the optical disk 104 inside.
The housing, protection to the case, 101 is normally closed, the shutter member to open the opening 103 of the case 100 moves when Ke <br/> over scan 100 is inserted into the information processing apparatus, 102 a shutter An opening 103 of the member 101 is an opening 106 of the case 100.
Is an insertion opening into which a motor rotating unit (not shown) for rotating the optical disc 104 is inserted, and 107 and 108 are cases.
This is a reference hole for defining the dimensions of each part of 100 , and reference hole 1
07 is a circle, that is, a round hole, and the reference hole 108 is an elongated hole provided according to the reference hole. Furthermore, the case of this embodiment
On the insertion side of 100 , the case of 3.5 ″ FD cartridge, that is, 3.5 ″ FD case (refer to American Standard ANSI X3B8 / 86-57 etc.)
The beveled portion 105 is provided at the side end opposite to the round hole 1
The front edge of the case and the slanted portion 105 form a boundary on a line perpendicular to the front edge of the case passing through the center of 07.

Reference numeral 200 denotes a case insertion portion provided in the information processing device (not shown). The case insertion portion 200 faces the slanted portion 105 provided in the case 100 that is inserted in a normal posture and orientation. As described above, the stopper 201 for preventing the wrong insertion of the different cases is provided. In addition, the reference holes 107 and 108
Is also used for alignment for accurately inserting the case 100 into the case insertion portion 200 .

Further, FIG. 3 is an explanatory view of the case 100 viewed from the back surface of FIG. 1, that is, the side of FIG. Oblique part 1 shown by the solid line in the figure
05 and the side end 109 on the opposite side are the case 100 of the embodiment.
The slanted portion 111 and the side end portion 110 indicated by broken lines are 3.
This is the case for a heterogeneous cartridge case such as a 5 ″ FD case.

As shown in this figure, the case of the embodiment has the slanted portion 105 on the opposite side to the 3.5 ″ FD case. Further, in the embodiment, the case insertion portion 200 faces the slanted portion 105. Since the stopper 201 is provided at the position, when the case 100 having the slanted portion 105 of the embodiment is inserted, the stopper 201 does not cause the deadlock to advance to the correct position and is loaded at the predetermined position. Other than the above, for example, if a dissimilar case such as a 3.5 ″ FD case is inserted, the stopper 20
Since the side end portion 110 comes into contact with the case 1, the case is not inserted any more and is not loaded into the predetermined position. Therefore, erroneous insertion of a different type case can be prevented, and damage to the optical head, which is the information reading section of the information processing apparatus, the optical disk rotating section, etc., can be avoided.

Further, since the slanted portion 105 is provided in the opening movement direction of the shutter member 101 for opening the opening 103, the case 100 is inserted into the case insertion portion 200 so that the shutter member 10 can be opened.
1 is pressed in the opening direction, and the slanted portion 105 (in the case of the 3.5 ″ FD case, the side end 110 and the stopper 201 face each other with high accuracy. Also, the shutter member 101 of the case 100 is pressed in the opening movement direction. The case 100 is inserted into the case insertion part 2
The stopper 201 in 00 is pressed against the side surface provided with the stopper 201, whereby the round hole 107 as a reference hole is accurately set at a position within the case insertion portion 200 at a constant distance from this side surface. As a result, the case 100 is surely loaded in the predetermined position. The accuracy of inserting the case 100 of the present embodiment and loading it at a predetermined position is improved, and erroneous insertion of a 3.5 ″ FD cartridge, which is a different type cartridge, can be reliably prevented.

The position of the oblique portion 105 of the present invention described above is 3.5 ″ if the following dimensions are selected for the reference holes 107 and 108 in the case of a width of 90 mm.
It can be shared with the FD, and productivity and design of the case insertion part can be simplified.

L ₁ = 80 ± 0.2mm L ₂ = 85 ± 0.2mm θ ₁ = 45 ° Here, θ ₁ is 45 ° and it is the same as the case of 3.5 ″ FD cartridge, but this is 3.5 ″ FD cartridge. When the tape is inserted upside down, the inclined portion provided at the front edge of the 3.5 ″ FD cartridge is the stopper 20 as in the case of the optical disk cartridge of this embodiment.
The front edge of the 3.5 ″ FD cartridge is set to the same position as the front edge of the case 100 when the optical disk cartridge of this embodiment is inserted in a proper posture. However, 3.5 ″ F by the method described later
It is designed to prevent incorrect insertion of the D cartridge.

Here, the distance L ₁ between the reference holes 107 and 108 is set to 3.5 ”FD standard draft (AN
SI X3B / 86-57 etc.).

In the case of a width of 94.4 mm, a value obtained by adding 4.4 mm to each of the above L ₁ and L ₂ is appropriate.

Further, in the present embodiment, the force applied portion of the shutter opening force applied to the shutter member 101 to open the opening 103 is defined as the formation position of the slanted portion 105, which passes through the center of the case 100 and the front edge portion. With respect to the center line perpendicular to, the corner is on the opposite side. As a result, the force-applying portion for the opening force and the slanted portion 105 can be provided separately.
These can be ensured to have dimensions that can surely function, and their reliability can be improved.

Also in the case insertion portion 200 , the stopper 201 and the first lever (lever 202 in FIGS. 5 and 6) for opening the shutter member 101, which will be described later, can be distributed left and right in a distributed manner. , Design constraints are relaxed.

Next, a second embodiment of the present invention will be described.

FIG. 4 is a constitutional view showing a second embodiment of the case 100 according to the present invention, and is a view seen from the same direction as FIG. In this figure, the parts denoted by the same numbers as in FIG. 3 are the same parts. The reference holes 107 and 108 shown in the figure are located on the side opposite to the case insertion side as compared with FIG.
It is not the essence of the present invention whether these reference holes 107 and 108 are provided on the front end side with respect to the insertion direction in the case 100 or on the rear edge side facing the front edge with respect to the front edge, and it is not limited to this. Absent.

The shutter member 101 of the embodiment shown by the solid line in the drawing is a shutter member 1 for a 3.5 ″ FD case which is a different case shown by the broken line.
Compared to 12, the width is narrower on one side by dimension L ₃ .
The action and effect of this will be described below.

5 to 8 are operation explanatory views of the second embodiment of the present invention shown in FIG. In these figures, 202 is
A shutter member for opening the opening 103 when the case 100 is inserted
The first lever for moving 101, 203 is the case 100
Is a second lever for actuating a device (not shown) for pressing to load in place. The first and second levers 202, 203 are tensioned by springs 204. Further, 205 is a stopper for preventing the operation of the second lever 203 when the case 100 is inserted with the shutter member 101 closing the opening 103.

Next, these operations will be described.

FIG. 5 and FIG. 6 show the operation when the case 100 of this embodiment is correctly inserted. That is,
When the case 100 is inserted along the case insertion portion 200 in the direction of the arrow A, the first lever 202 of the present embodiment abuts on the side portion of the shutter member 101, that is, the force applying portion, and follows the insertion of the case 100 . , The shutter member is displaced in the direction of arrow B at the same time.
101 is moved in the direction of arrow C. When the case 100 is further inserted, the end of the case 100 comes into contact with the second lever 203, and by pushing this, the pressing device is actuated, so that the disk 104 inside the case 100 becomes the motor rotating part via the insertion opening 106. It can be pressed.

Substantially coincide with the opening 103 of the opening 102 and the case 100 of the shutter member 101 in this state, the information processing apparatus is loaded to a predetermined position of the case 100 is completed becomes active.

Next, an example of the operation when the dissimilar case is inserted will be described with reference to FIGS. 7 and 8.

As described above, since the shutter member 112 of the different type case has a different width from the shutter member 101 of the present embodiment, when the different type case 100 ′ is inserted, the first lever 202 is used when the shutter member 112 is inserted. Although it is in contact with the front edge of the shutter member 112, it cannot contact the side of the shutter member 112, that is, the force applying portion. In other words, the distance from the center line passing through the center of the different type case 100 ′ and orthogonal to the front edge to this force applying portion is
This is different from the similar distance in the case 100 shown in FIGS. 5 and 6. Therefore, even if the dissimilar case 100 'enters in the direction of arrow A and the first lever 202 is displaced in the direction of arrow B, the shutter member 112 cannot be moved in the direction in which the opening is opened. Therefore, while heterologous case 100 in a state where the shutter member 112 can not move 'will be inserted, the first lever 202, as compared with the case of inserting the case 100 of the present invention shown in FIG. 6, It is in a position advanced to the insertion side (that is, the arrow A side). Therefore, 3.5 ″ FD
Before the case 100 ′ contacts the second lever 203, the stopper 205 provided stops the movement of the foreign case 100 ′ to a predetermined position via the first lever 202. As a result, the operation of the second lever 203 is hindered, and damage to the motor rotating part, the optical head, etc. can be prevented.

Further, in FIGS. 5 to 8, a stopper 201 according to the first embodiment of the present invention is provided, and in combination with the above-described second embodiment, a double dissimilar case erroneous insertion prevention mechanism is provided. I am configuring.

〔The invention's effect〕

As described above, according to the present invention, the optical disc case having the slanted portion on the side opposite to the heterogeneous case such as the 3.5 ″ FD case is used to insert the heterogeneous case into the optical disc information processing apparatus. Can be prevented.

Further, the boundary between the front edge portion of the case and the slanted portion is located on the center line of the dimension reference hole of the optical disk case, so that the design can be performed accurately.

[Brief description of drawings]

1, 2 and 3 are block diagrams of the first embodiment of the present invention, and FIG. 4 is a block diagram of the second embodiment of the present invention, FIG.
FIG. 6, FIG. 7 and FIG. 8 are operation explanatory views of the second embodiment. 100 ...... Disk case 101 ...... Shutter member 104 ...... Optical disk 105 ...... Slanted part 200 ...... Case insertion part 201 ...... Stopper 202 ...... First lever 202 ...... Second lever 205 ...... Stopper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 59-2269 (JP, A) JP 50-15528 (JP, A) JP 62-65279 (JP, A) JP 62- 65278 (JP, A) JP 58-137170 (JP, A) JP 62-243160 (JP, A) Actually opened 62-254 (JP, U) Actually opened 59-164981 (JP, U) Actual Open Sho 58-140570 (JP, U) Actual Open Sho 62-164657 (JP, U)

Claims (3)

[Claims] 1. An optical disk capable of writing or reading information is rotatably supported in an optical disk case, and an opening for exposing the optical disk is formed in the optical disk case. An optical disk cartridge in which a shutter member for opening and closing a portion is urged by a spring member in a direction of closing the opening, and the optical disk case is defined by ANSI standard or the like.
The shutter member of the optical disk case has a lateral width equal to the lateral width of the 5-inch floppy disk case and a thickness greater than the thickness of the 3.5-inch floppy disk case, and slides to open and close the opening. And the edge perpendicular to this edge as the front edge and side edge of the optical disk case, and the intersection of the front edge and side edge as a corner, and the 3.5-inch floppy disk described above. The front edge of the 3.5-inch floppy disk case has an edge on which the shutter member slides to open and close the opening provided to expose the floppy disk on the case and an edge perpendicular to the edge. As the section and the side edge section, the intersection of the front edge section and the side edge section is a corner section, and the optical disc case has the above-mentioned 3.5 section among the corner sections.
A corner opposite to the corner on which the slanted portion of the inch floppy disk case is formed, in the direction in which the shutter member at the front edge moves to open the opening. The corner portion is provided with a slanted portion forming an angle of 45 degrees with respect to the front edge portion or the side edge portion, and further, the opening is opened to the shutter member in a state where the opening is closed. The optical disk is characterized in that the oblique portion is formed in the direction in which the shutter member moves to open the opening, as viewed from the force applied at the front edge of the opening force applied to open the opening. Cartridge for. 2. The center line passing through the center of the optical disk case and orthogonal to the front edge of the optical disk case from the force applying portion at the front edge of the optical disk case according to claim 1. And the distance to
The center of the 3.5-inch floppy disk case from the force-applying part of the opening force given to the shutter member in the state where the opening is closed at the front edge of the 3.5-inch floppy disk case. An optical disk cartridge, which is different in distance from a center line which passes through and is orthogonal to the front edge of the 3.5-inch floppy disk case. 3. The optical disk case according to claim 1, wherein the optical disk case is a reference hole for defining a size of each part of the optical disk case, and is used in an apparatus for writing or reading information. A round hole used for positioning when the case is inserted is provided, and the front edge portion and the slanted portion are separated by a line passing through the center of the round hole and perpendicular to the front edge portion of the optical disk case. An optical disk cartridge characterized by: