JPH0441104Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a magnetic shielding case for a floppy disk that allows easy insertion and removal of a floppy disk and has a high magnetic shielding effect.

<Prior Art and Problems> Various storage cases are used to protect floppy disks. Conventionally, thin storage cases are made by folding paper or molding plastic to form a sheet-like case that can accommodate a single floppy disk. . Also,
An open/close type case is also used in which two metal plates are formed into a tray shape and connected with a hinge so that they can be opened and closed, thereby making it possible to store a plurality of floppy disks. However, the former thin case has low mechanical strength and is easily bent, so it is insufficient as a protective case, and has almost no magnetic shielding effect, making it unreliable for storing information stored on floppy disks. Missing.

On the other hand, the latter open/close type case requires opening and closing the lid each time it is used, and since a plurality of floppy disks are stacked and stored inside, it is troublesome to take out and store the floppy disks. Furthermore, when the case is closed, there is a risk that the floppy disk will be caught between the side edges of the case and damaged.

<Problems to be solved by the invention> The present invention improves the magnetic shielding effect of a thin sheet-like case that allows easy insertion and removal of floppy disks, and also provides a protective sheet on the ejection opening and the inner surface of the case. By folding the edges outward, the floppy disk is prevented from being damaged when being inserted or removed, further improving its protective function.

<Means for Solving the Problems> According to the present invention, there is provided a sheet-like thin case made of a highly conductive material, the inner surface of the case is lined with a protective sheet, and the case further includes: An ejection port for taking the floppy disk in and out is provided at one end, the edge of the ejection port is cut out to form a notch through which each part of the floppy disk is exposed, and the edge of the ejection port is formed with a protective sheet. A magnetic shield case for a floppy disk is provided, which is characterized by being integrally folded outward. In a preferred embodiment, the highly conductive member is a magnetic shield case made of a steel plate having a magnetic shielding function of 1500G or more, or the case outlet has a step between the front side and the back side of the case. A magnetic shielding case is provided in which a front side edge is formed lower than a back side edge.

The protective sheet is made of plastic, paper, or the like, and is lined on the inner surface of the case to reduce the impact applied to the floppy disk and to facilitate the insertion and removal of the floppy disk. As the protective sheet, a foamed plastic sheet such as polyurethane foam, a rubber sheet, a plastic film having a certain thickness, paper, or similar materials can be used as appropriate. The protective sheet can be formed by any appropriate means such as coating, spraying, or pasting. The cutout of the ejection port is to facilitate the insertion and removal of the floppy disk and to confirm whether or not it is stored. The part can be grasped with fingers, etc., and when the corner part is not visible, it serves to indicate that the case is empty. In addition, since the edge of the outlet is folded back together with the protective sheet and the edges are rounded, the floppy disk may come into contact with the edge of the outlet and be damaged when being inserted or removed. There is no problem, so you can put in and take out smoothly.

<Example> Hereinafter, with reference to an example illustrating the present invention,
This will be explained more specifically.

FIG. 1 is a perspective view of a magnetic shielding case according to the present invention, and FIGS. 2 and 3 are front and rear views thereof. The magnetic shield case 1 is formed by overlapping a rectangular plate-shaped front material 2 and a back material 3 of the same shape, and a space for storing a floppy disk is formed between the front material 2 and the back material 3. has been done.

An ejection port 5 for inserting and removing the floppy disk A is formed at one end of the case 1, and an edge 6 of the ejection port 5 has one end cut out in a straight line at a certain angle. A notch 6a is formed. Note that the notch 6a is a floppy disk A.
is provided so as to be located outside the disk-shaped recording portion main body inside the disk when it is housed in the case 1. The shape of the cutout portion 6a may be either arcuate or linear, and is formed into an appropriate shape. One corner of the floppy disk A stored in the case 1 is exposed through the notch 6a.
It is easy to determine whether the case is empty or not, and since the exposed corners can be grasped, the floppy disk A can be easily taken out. Further, the edge 6 of the outlet 5 of the surface material 2 is folded back outward over its entire length and is in close contact with the outer surface of the surface material 2. That is, a strip-shaped folded side 7 along the edge 6 is formed at the outlet portion of the surface material 2 . As a result of this folding, the edge 6 of the outlet 5 is rounded and the floppy disk A is not caught on the edge 6, so that the floppy disk A can be inserted and removed very smoothly. or,
It is also possible to attach a label or the like to this folded side 7 as appropriate and use it as a heading. In this embodiment, the edges of the back material 3 are also folded back in the same way as shown in FIG. This makes it possible to increase the stability of handling. Furthermore, the case 1
The entire inner surface is lined with a protective sheet 9. The protective sheet 9 is made of a sponge-like plastic foam sheet, a plastic sheet of a certain thickness, or paper, as appropriate. This not only reduces the impact, but also improves the slippage when the floppy disk A is taken in and out of the case 1.

Furthermore, in this embodiment, as shown in FIG. 2, a step is formed between the front side and the back side of the outlet 5, and the edge of the facing material 2 is formed lower than the edge of the backing material 3. has been done. Therefore, as shown in FIG. 4, the floppy disk A can be inserted using the upper side of the backing material 3 as a guide surface, making insertion of the floppy disk A even easier.

Next, in the case 1, the front surface material 2, the back surface material 3, and the side end portions 4 are all made of a highly conductive member with high magnetic shielding properties. As metals with high magnetic shielding properties, steel plates such as pure iron, aluminum, stainless steel, etc. are used. The preferred magnetic shielding performance is that when the outside is in a magnetic atmosphere of 1500G, the magnetic flux leaking into case 1 is 150~
It is sufficient if it can be reduced to about 200G. In order to obtain the above magnetic shielding effect, when an optimal steel plate is used, the thickness of the steel plate is sufficient to be 0.2 to 0.4 mm.

FIG. 4 shows how the magnetic shield case 1 is used. The floppy disk A is inserted from the outlet 5 of the case 1 between the front material 2 and the back material 3,
It will be stored. In this stored state, a part of the floppy disk A is exposed from the notch 6a, but since the recording portion main body is stored in the case 1, it is well magnetically shielded and no adverse effects from external magnetism occur.

FIG. 5 is a developed view showing the case 1 formed from a single plate. The front surface material 2 and the back surface material 3 are continuously formed via folding lines a and b provided in the central portion which becomes the lower end surface 4. Surface material 2
A folded side 8 that is in close contact with the end surface 4 and the back material 3 is formed on both sides of the surface material 2 through folding lines c and d, and a folded side 7 that is folded back outward is formed on the upper side of the surface material 2 and is formed on the folded line e. , f. Here, the folding line e becomes the edge 6 of the outlet 5 after the case 1 is assembled, and the folding line f becomes the edge of the notch 6a. On the other hand, a folded side 8 is formed on a side of the back material 3, which is folded back toward the back side via folding lines g, h, and i. Case 1
, each folding line is bent in a predetermined direction and the folded sides 7 and 8 are brought into close contact with the front material 2 and the back material 3,
It can be easily assembled by joining by gluing, welding, screwing, etc.

6A and 6B are front views showing other embodiments of the present invention, respectively. The embodiment shown in FIG. 6A is the surface material 2.
The case 1 is formed by cutting out the upper left corner of the back material 3. Further, FIG. B shows an example in which the notch 6a of the surface material 2 is formed into an arcuate surface and the outlet 5 is not provided with a step.

Note that the present invention is not limited to the above embodiments, and various modifications can be made. For example, the outer shape of the case may be formed into a semicircle, or the case may be assembled by welding two plates. Further, the protective sheet may be formed not only on the inner surface but also on the outer surface.

<Effects of the Invention> Since the main body of the storage case of the present invention is formed of a highly conductive member, the floppy disk can be reliably magnetically shielded. In addition, according to the present invention, since a protective sheet is provided on the inner surface of the case, the impact is alleviated by the protective sheet.
The floppy disk can be reliably protected. Furthermore, since the edges of the outlet are folded back and rounded, the floppy disk can be easily inserted and there is no risk of damaging the floppy disk. In addition, since a notch is formed,
The floppy disk can be taken out more easily.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
Figures 3 and 3 are front and rear views, and Figure 4
The figure is a perspective view showing the state of use, FIG. 5 is a developed view showing the assembled state, and FIGS. 6A and 6B are front views of other embodiments. 1... Case, 2... Surface material, 3... Back material,
5... Outlet, 6... Edge, 6a... Notch,
7, 8...Folded side, 9...Protective film, 4...End face.

Claims (1)

[Claims for Utility Model Registration] 1. A thin, sheet-like case made of a highly conductive material, the inner surface of the case being lined with a protective sheet, and a floppy disk at one end of the case. an outlet for taking in and taking out the floppy disk, an edge of the outlet is cut out to form a notch through which a corner of the floppy disk is exposed, and the edge of the outlet is folded back together with the protective sheet to the outside. A magnetic shield case for floppy disks. 2. The magnetic shielding case according to claim 1, wherein the highly conductive member is a steel plate having a magnetic shielding function of 1500G or more. 3. The above-mentioned case outlet has a step formed between the front side and the back side of the case, and the front side edge is formed lower than the back side edge. Magnetic shield case described in section.