JPH01124174A - Disk case - Google Patents

Abstract

PURPOSE:To surely prevent the generation of reverse insertion even if a disk case having an right/left asymmetrical shutter is used by forming a recessed stopper on the front edge part of the disk case on the right/left reversed side to the inserting direction on a position abutted upon a level. CONSTITUTION:When a disk case 1 having a shutter 3 which is right/left asymmetrical on the front edge part 1a in the inserting direction (a) is normally inserted, the recessed stopper 7 is formed on the front edge part 1a of the case on the right/left reversed side on a shutter end part abutted upon the lever 101 of an information reader. Even if the disk case 1 is inserted into the information reader 100 in error, i.e. reversely inserted, the lever is fixed on the recessed stopper 7 formed on the front edge part 1a of the case 1 and used as an obstacle to the case 1, so that the case 1 can not be inserted furthermore.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disc case for storing a disc therein, and in particular, to prevent the case from being accidentally inserted with the front and back sides reversed when inserted into an information reading device. This relates to the structure of the disc case to prevent this.

[Prior Art] In a disk case that stores a disk inside, a floppy disk with a diameter of 86 mm, for example, conforms to the American standard: A.
It is built into a disk case standardized by NSI X3B11/86-57 etc. This disc case has a shutter whose front edge is substantially symmetrical with respect to the insertion direction when the case is inserted into the information reading device. This shutter is pressed to one side by a spring or the like before the disc case is inserted, and covers the opening and protects the disc.

The opening and closing operation of this shutter is performed as follows. That is, the shutter of the 86mm floppy disk case slides in a direction perpendicular to the case insertion direction,
An opening provided in the case is opened when inserted and closed when removed. On the other hand, the information reading device is equipped with a rotatable lever, for example, and when the disk case is inserted, the lever comes into contact with the end of the shutter, and the case pushes the lever due to the insertion. The lever rotates and slides the shutter to open the opening. Therefore, if you accidentally insert the disc case upside down (hereinafter referred to as "reverse insertion"), the lever will slide the shutter on the opposite side from the normal one. At this time, since the shutter is pressed to one side, it cannot slide. This also stops the lever from rotating, thereby preventing the disc case from being inserted.

In a disk case where the shutter width is symmetrical with respect to the insertion direction, the shutter shape itself can be configured to prevent reverse insertion.

[Problems to be solved by the invention] For example, Document ISO/T
In a disk case such as that shown in C97/5C23N129 where the shutter width at the front edge is asymmetrical, the shutter structure cannot prevent this from happening if the disk case is inserted upside down. Compared to the position of the shutter end where the lever of the information reading device comes into contact when it is inserted normally, the shutter end on the opposite side is located closer to the center of the case. This is because the disc case is inserted until it comes into contact with the shutter end that is closer to the center.

Furthermore, the above Document IS○/TC97/5
In the disk case described in C23N129, when the disk case is inserted normally, from the position where the lever first touches the shutter,
The distance until the shutter fully opens is equal to the distance from when the lever touches the disk case to when it touches the shutter located in the center when the lever is inserted backwards, so there was a problem that the disk could not be inserted backwards at all.

An object of the present invention is to provide a structure that can reliably prevent reverse insertion even in a disk case having asymmetrical shutters.

[Means for Solving the Problem] To solve this problem, the present invention provides a disc case having a shutter whose front edge in the insertion direction is asymmetrical, and the shutter end which the lever of the information reading device comes into contact with when inserted normally. A concave stopper was provided on the front edge of the case on the opposite left and right sides of the case.

[Operation] With the above configuration, even if the disc case of the present invention is accidentally inserted upside down, the lever of the information reading device is fixed by the concave stopper provided on the front edge of the case. This stops the rotation of the lever, and the lever acts as an obstacle to prevent the disc case from being inserted, making it possible to reliably prevent the disc case from being inserted in the wrong direction.

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

FIG. 1 is a block diagram showing a part of a disc case and an information reading device according to an embodiment of the present invention. It shows the condition. Further, FIG. 2 is a cross-sectional view showing details of section b of the disk case in FIG. 1.

In these figures, the upper part is a disk case, 2 is an information recording disk such as a magnetic disk or optical disk stored inside the disk case, and 3 is a shutter.
As shown in the figure, the front edge portion has an asymmetrical shape with respect to the insertion direction a. Reference numerals 4 and 5 are openings into which a motor rotating section and an information reading head (both not shown) provided on the disk case are inserted. One is an information reading device, 101 is a lever for opening the shutter 3, and 102 is a spring. Reference numeral 6 indicates the front edge of the case that indicates the position where the lever 101 comes into contact when the disc case is correctly inserted into the information reading device 100, and 7 indicates the front edge on the case on the left and right opposite side of the lever contact position 6. This is a concave stopper provided in part 1a. With this configuration, the first
As shown in the figure, the information reading device 10
Even if the lever 101 is inserted incorrectly into the 0 position, that is, inserted backwards, the lever 101 will be fixed to the concave stopper 7 provided on the front edge 1a of the case, and will act as an obstacle to the case, preventing further insertion. can be prevented.

Next, the operation when the disc case of the present invention is correctly inserted will be explained.

FIGS. 3 and 4 are explanatory diagrams showing the operation when correctly inserting the top of the disc case into the information reading device.

The numbers assigned to these figures indicate the same parts as in FIG.

Further, 8 is an opening provided in the disc case for inserting an information reading head, and 7 is an opening provided in the shutter 3. As shown in FIG. 3, when the disc case 1 is inserted into the information reading device 100 in the direction of the arrow a, the lever 1
01. moves laterally while contacting the front edge 1a on the case. Therefore, the shutter 3 is pushed in the d direction by the movement of the lever 101, and slides until the opening 8 on the case coincides with the opening 9 of the shutter 3, as shown in FIG.

Next, the operation when a conventional disc case is inserted upside down will be explained.

Figure 5 shows Document IS○/TS97/5
FIG. 4 is an explanatory diagram of the operation when the disc case described in C23N129 is inserted upside down. As shown in this figure, the conventional disk case top 2 does not have a stopper 7 as shown in FIG. 1. Therefore, if case 1' is accidentally inserted backwards into information reading device 100,
-101 rotates in the direction C and moves the front edge 1'a of the case 1' laterally, so it does not become an obstacle to the movement of the case 1' in the direction a. As a result, as shown by the broken line in the figure, the upper part of the case is inserted into the information reading device 100 upside down. As a result, the motor rotating section, information reading head, etc. inside the information reading device 100 may be damaged, or the disk inside the disk case may be damaged.

FIG. 6 shows a modification of the concave stopper 7 shown in FIGS. 1 and 2. In FIG. Figures (a), (b),
In contrast to (c), in (d), (e), and (f), the stopper 7 is provided closer to the center of the disc case. The present invention is not limited to the shapes shown in these figures, as long as the lever 101 of the information reading device 100 can be fixed.

In addition, in the present invention, Document IS○/TC97
Although the description has been made based on the disk case 1 and shutter 3 of the /5C23N129, the shapes of these and the shape of the information reading device 100 are not limited to these.

Next, FIGS. 7 and 8 show other embodiments of the present invention.

In a normal disc case, the shutter 3 must be closed when the disc is taken out from the information reading device, and the torsion coil spring 1 shown in the figure must be closed.
0 is often used. Further, the top of the disc case is often not a single piece, but is composed of two members. In FIG. 7, (a) is a view of (b) seen from above, and (C) is a ee cross-sectional view of (b). In the figure, the torsion coil spring 10 is attached so as to widen the distance between the disc case and the shutter 3, that is, to close the shutter 3. The top of the disc case is composed of members 1b and 1c. Normal torsion coil spring 1o
To install the disc, first attach one end to the shutter 3, then push the other end onto the disc case. Therefore, similarly to the embodiment of the present invention described above, the stoppers 7 are provided on the members 1b and 1c, but in this case, as shown in the figure, the stoppers 7
By providing a deeper recess 11 on the b side, the spring 10
The workability of pushing the material onto the case is improved.

That is, as shown in the cross-sectional view (c), the stopper 7
This is because there is a difference in depth Ll and L2 between the four parts 11 and 11, so that the spring 10 can be pushed into the case while being pressed against the member IC side.

FIG. 8 is a modified example of FIG. 7. (,) in the figure is (b)
Viewed from above, (C) and (d) are e in (b)
They are e and ff sectional views. This example is shown in Fig. 7 and Fig. 6 (
This is a combination of the configuration d), in which the stopper 7 is moved closer to the center of the disc case. Also, a recess 11 used for pushing the torsion coil spring 10 onto the case.
is provided in the member 1b at the same depth as the stopper 7. As shown in Figure (d), the member 1c facing this recess 11
There are no recesses on the sides.

The effect of this embodiment is the same as the case of FIG.

In this case, there is no problem even if the depth of the recess is shallower than the stopper 7.

[Effects of the Invention] As described in detail above, according to the present invention, even in a disc case having a shutter whose front edge in the insertion direction is asymmetrical, the lever for opening the shutter of the upper reading device can be removed when the disc case is inserted upside down. By providing a concave stopper on the front edge of the case that comes into contact with the case, it is possible to reliably prevent the case from being inserted in the wrong direction. damage can be prevented.

[Brief explanation of the drawing]

1, 3, and 4 are configuration diagrams showing a disk case of the present invention, FIG. 2 is an explanatory diagram of the main part of FIG. 1, FIG. Figure and 7th
8 are configuration diagrams showing other embodiments of the present invention. Engineering...Disc case 2...Disc 3...Shutter 7...Stopper 100...Information reading device 101...Lever 11 pieces Z1 Yo soil 7 Silk tF times 2 women 1 achievement 〆 1 scarcity 1 (A)
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Claims (1)

[Claims] A disc that is inserted into an information reading device and rotates to reproduce, record, or erase information is housed inside, and when inserted into the information reading device, it is opened by a lever of the reading device, and when taken out, it is closed and inserted. In a disc case having a shutter whose front edge is asymmetrical with respect to the direction, a concave stopper is provided at the front edge of the disc case on the opposite left and right side with respect to the insertion direction at a position where the lever comes into contact. A disk case characterized in that the lever is fixed by the stopper, thereby preventing incorrect insertion.