JPH08244870A - Disk case - Google Patents

Abstract

PURPOSE: To easily and safely package and carry a disk without damaging it by a method wherein a slot consisting of a disk-holding part and a guide part which introduces the disk into the holding part is arranged on the internal surface of a container, and at the same time, a rubber coating layer is formed on the slot. CONSTITUTION: For a disk case 4, a plurality of slots are formed with a specified interval on the internal surface of a container 3 so that a plurality of disks 1 can be stored while being arranged in order. Then, the slot is formed of a holding part 2a of the disk 1, and a guide part 2b which introduces the disk 1 into the holding part 2a. In this case, on the slot, a rubber coating layer 5 is formed. By this method, the generation of flaws in a process wherein the disk is stored can be suppressed, and the yield of the production is improved. Also, flaws are prevented from generating on the surface of the disk in the vicinity of the outer periphery of the disk, and in addition, the disk case 4 is applied as a storage case for latest disk which has a tendency wherein the disk is utilized as a recording medium as much as possible to the vicinity of the outer periphery.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk case used for a container for carrying aluminum disks or the like, a container for packaging and shipping, and the like.

[0002]

2. Description of the Related Art A disk, for example, a hard disk used for a storage device of a computer is usually manufactured by manufacturing an aluminum substrate formed of a predetermined Al material and coating a predetermined magnetic layer on the aluminum substrate. . During the manufacturing process, a disc case as shown in FIG. 1 is used, for example, for storing a disc during processing, for transporting the disc, or for packaging a manufactured product. The disc case 4 shown in the figure has a plurality of slots 2 formed on the inner surface of the container 3 at predetermined intervals so that a plurality of discs 1 can be aligned and stored. The material of the container 3 is not particularly limited, but a resin container is usually used.
In addition, in addition to the disc case 4 in which the slot 2 is formed as shown in the figure, for example, discs to be accommodated are stacked and a separator is sandwiched between the discs so that the discs are not directly contacted with each other. There are cases.

In the disc case 4 shown in FIG. 1, the stored discs 1 do not come into contact with each other. For example, in the case of the disk 1 for hard disk use, since it is made of an aluminum material, it is easily scratched,
Also, since it is a precision part, even a minute scratch easily causes a product defect. Further, when manufacturing a hard disk, the processors are often different at each processing stage, and it is required that the disk can be easily and safely packed and transported.

[0004]

In the disc case 4 shown in FIG. 1, since the slot 2 is formed, the disc 1 to be stored does not come into contact with the adjacent disc 1 and is damaged during transportation and transportation. It is hard to stick. Further, when the disc 1 is stored in the disc case 4, the disc 1 is lowered so as to be inserted from the cut of the slot 2 located in the upper part of the disc case 4, and is stored in the lower holding portion.
Usually, the disc 1 is often inserted into the slot 2 and lowered to a predetermined height, and then the disc 1 is naturally dropped. Even if this drop height is a low height of, for example, about 10 mm, at this time, the outer peripheral portion of the disk 1 or the vicinity thereof may be scratched.

FIG. 3 is an explanatory view showing a state where (one of) the slots 2 is seen from the upper part of the disk case 4. Here, the case where the angle of the groove wall forming the slot 2 is 65 degrees is shown, but this angle is appropriately set depending on the thickness of the disk 1, the storage density, and the like. As shown in the figure, the disc 1 and the groove wall of the slot 2 come into contact with each other (dotted line circle in the figure), and the friction caused by the friction or the drop causes damage to the outer peripheral portion of the disc 1 or the disc surface near the outer peripheral surface. It may happen. When the outer peripheral portion of the disk 1 is used as a hard disk, it does not serve as a storage medium, but in recent years, due to the increase in memory capacity, the disk surface tends to be used as much as possible as a storage medium near the outer periphery of the disk 1. Therefore, even on the disk surface near the outer periphery,
It has been required to suppress the generation of scratches.

Further, in the case of a disk used as a hard disk, the stress taken in at the time of occurrence of the above-mentioned scratches during the sputtering step, which is a step after the magnetic layer is formed on the disk surface in the manufacturing process, There was also a problem that it was released and caused problems such as blister.

Therefore, there has been a demand for the development of a disk case that enables easy and safe packing and transportation of the disk and that is hard to scratch the disk.

[0008]

That is, according to the present invention, one or a plurality of slots formed in a holding portion of a disc and a guide portion for introducing the disc into the holding portion are provided on the inner surface of the container, and the slot is provided in the slot. A disk case having a rubber coating layer formed thereon.

[0009]

The container used for the disk case of the present invention may be made of resin such as ABS, polycarbonate, or vinyl chloride resin, or may be made of metal, but is preferably made of resin from the viewpoint of cost and ease of use. Is. As a method of forming the rubber coating layer in this slot, for example, a method of spraying melted rubber or a method of applying with a brush or the like can be appropriately adopted. As the type of rubber, for example, synthetic rubber such as nitrile rubber, silicon rubber, fluorine rubber, styrene rubber, urethane rubber, and natural rubber can be applied. The thickness of the rubber coating layer depends on the type of rubber, but is preferably 0.1 to 2.0 mm from the viewpoint of durability and maintenance of the slot shape.

In addition to the method of forming the rubber coating layer as described above, a method of sticking a rubber sheet to the slot, or the inner surface portion of the container in which the slot is formed has a double structure and the inner surface structure is formed of rubber. There is also a way to do it.

[0011]

EXAMPLE Container 3 shown in FIG. 1 (made of polycarbonate, approximately external dimensions: height 100 mm × width 108 mm × length 200)
mm, container thickness about 2.5 mm), a rubber solution (synthetic rubber: thinner = 1: 2) obtained by dissolving synthetic rubber (nitrile rubber) with a thinner in a slot 2 formed on the inner surface.
Was sprayed on. Although it is sufficient to spray the rubber solution only on the valley portion of the slot 2, here, the rubber solution was sprayed without distinction between the valley portion and the mountain portion of the slot 2 in order to simplify the work. 2 is X- of FIG.
It is a schematic diagram showing a cross section of disk case 4 by a X'line. For the sake of simplicity, the drawing of the slot 2 is omitted in the same drawing, and the rubber coating layer 5 formed on the valley portion and the mountain portion of the slot (not shown) on the inner surface of the container 3 is shown. The rubber coating layer has a thickness of about 0.5 mm.

By using the disk case 4 thus formed with the rubber coating layer, an aluminum disk (material AA50) is actually used.
86, plate thickness 1.25 mm, outer diameter 95 mm, inner diameter 25 mm
The storage experiment of the aluminum substrate for magnetic disk) was performed. To explain with reference to FIG. 2, the disc 1 is held at a predetermined height (10 to 10) to be described later from the holding portion 2a.
It is an experiment in which the disc 1 is naturally dropped from 40 mm) and stored. For each condition (height), n = 10 experiments were performed. After that, the disk 1 stored was taken out, and the disk surface near the outer peripheral portion was visually inspected. Then, when there was a scratch to the extent that the scratch was visually observed, it was defined as a scratch. Of the 10 dropped discs, the number of discs identified as having scratches was multiplied by 10 to define the scratch occurrence rate.
For comparison, the same experiment was conducted on a conventional disk case in which the above rubber coating layer was not formed. The results are shown below.

[Drop height] Example of the present invention (with rubber coating layer) Conventional example (without rubber coating layer) 10 mm Scratch incidence rate: 0% Scratch incidence rate: 80% 20 mm Scratch incidence rate: 0% Scratch incidence rate: 100 % 30 mm Scratch occurrence rate: 0% Scratch occurrence rate: 100% 40 mm Scratch occurrence rate: 20% Scratch occurrence rate: 100%

As is clear from these results, in the disc case of the present invention, no scratches were observed when the drop height was 30 mm or less, and there were no scratches generated during the step of storing the disc case. It turns out that you can prevent it.
On the other hand, in the conventional disk case in which the rubber coating layer was not formed, many scratches that could be visually recognized were generated.

[0015]

As described above in detail, the disk case of the present invention can suppress the occurrence of scratches in the step of housing the disk therein, and contributes to the improvement of the manufacturing yield. Further, it can be suitably used as a storage case of a disk for a recent hard disk which does not cause scratches on the disk surface near the outer circumference of the disk and tends to be used as a storage medium as much as possible up to the outer circumference of the disk. As described above, the present invention makes a significant industrial contribution.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a disc case.

FIG. 2 is an explanatory diagram showing a cross section taken along line XX ′ of FIG.

FIG. 3 is an explanatory diagram showing a state in which the slot is viewed from the upper part of the disk case.

[Explanation of symbols]

 1 disc 2 slot 2a holding portion 2b guide portion 3 container 4 disc case 5 rubber coating layer

Claims (1)

[Claims] 1. A container is provided with one or a plurality of slots formed in a holding portion of a disc and a guide portion for introducing the disc into the holding portion, and a rubber coating layer is formed in the slot. Disk case featuring.