JP2002029586A - Discoidal housing case for medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk-form medium housing case wherein a sheet material such as an index card having a thickness can be housed even when the housing case is made thin, and at the same time, the strength of side walls is prevented from reducing in the vicinity of the attaching root section of a holding piece which holds the sheet material. SOLUTION: This housing case is equipped with a main body 10 for housing the discoid medium, an a lid body 20 for covering the main body. In this case, the main body 10 has a bottom wall 11 and the side walls 12. The lid body 20 has an upper wall 21 and side walls 22. At the center of the bottom wall of the main body, a holding protuberance 15 for holding the central hole of the disk-coid medium is formed. Also, the holding pieces 25 which protrude from the side walls of the lid body and hold the sheet material in a space to the upper wall are formed. At least side wall sections 22c with the holding piece of the lid body are constituted in a manner to become approximately equal to the thickness of the housing case when the main body and the lid body are combined. Then, notched sections 12b and 12e are provided on the bottom wall of the main body in a manner to correspond with the holding pieces.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a disk-shaped medium,
In particular, the present invention relates to a disk storage case for storing a disk-shaped medium such as a CD (compact disk) or a DVD (digital versatile disk) that is not contained in a cartridge.

[0002]

2. Description of the Related Art In recent years, write-once compact discs (generally called CD-Rs) have been widely used. In the case of a CD-R, the recorded contents are written on an index card, and the CD-R is stored in a storage case. However, when storing a plurality of CD-Rs, the storage case is often arranged upright. The index card has an L-shaped cross section consisting of a main surface and a back surface so that the recorded contents can be seen from the side.

Japanese Patent Application Laid-Open No. 10-106203 discloses a storage case in which a main body, a lid, and a tray having a holding projection engaged with a center hole of a disk are combined, and an index card is arranged between the main body and the tray. Although disclosed, this type is inconvenient because the tray must be attached to and detached from the main body every time the index card is taken out and mounted, and the number of parts is large and the cost is high.

On the other hand, according to a storage case in which a main body is provided with a holding portion for holding a disk as previously proposed by Japanese Patent Application No. 11-160986 by two of the present inventors, the storage case In addition, the index card can be easily attached and detached, and the back side of the index card can be widened for excellent visibility. However, while this type of storage case has a thickness of about 7 mm, in recent years, the number of CD-Rs held by individuals has increased, and a thinner storage case has been desired.

In general, since the index card holding piece formed on the side wall of the lid is formed using a slide core of a molding die, a hole is formed in the side wall near the base of the holding piece. However, if the thickness of the storage case is reduced, the height of the side wall is inevitably reduced, so that the strength of the side wall near the base of the holding piece is reduced due to the hole formed in the side wall. Also, when the position of the hole is closer to the upper wall side, the gap between the upper wall and the holding piece (the end of the index card enters) becomes narrower, and the operability of attaching and detaching the index card is deteriorated. It becomes impossible to insert a thick booklet or the like.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, the present invention can store a thick sheet material such as an index card even if the storage case is made thinner. An object of the present invention is to provide a disk-shaped body storage case in which strength of a side wall does not decrease near a base of a holding piece for holding a sheet material.

[0007]

To achieve the above object, a disk-shaped medium storage case according to the present invention comprises a main body having a bottom wall and a side wall for storing a disk-shaped medium, and an upper wall and a side wall. A cover for covering the main body, and a holding projection for holding a center hole of the disk-shaped medium is formed at a central portion of a bottom wall of the main body, A holding case in which a holding piece for holding a sheet material is formed so as to protrude and hold the sheet material between the upper wall and at least a side wall part of the lid body where the holding piece is located. When combined, the storage case is configured to have a thickness substantially equal to the thickness of the storage case, and a notch is provided in a bottom wall of the main body corresponding to the holding piece.

According to the disk-shaped medium storage case,
Since the side wall portion from which the holding piece protrudes is almost the same as the thickness of the storage case and is thick, even if the storage case is configured to be thin, the distance between the holding piece and the upper wall can be maintained large, and a sheet such as a thick index card is used. The material can be stored, and the strength of the side wall does not decrease near the base of the holding piece. In addition, since there is a cutout in the bottom wall on the main body side corresponding to the holding piece on the lid side, even when the side wall part is thick, they do not interfere with each other when the main body and the lid are combined, and the holding piece is thick. Even if configured, there is no interference.

In addition, a wall is formed along the notch of the bottom wall of the main body, and when the main body and the lid are combined, the upper surface of the wall facing the upper wall of the lid is the upper surface of the holding piece. It is preferable to be configured to enter the inside of the storage case from the bottom surface on the outer surface side. Thereby, the wall of the cutout portion and the holding piece overlap in the thickness direction of the storage case, so that intrusion of dust can be prevented. In particular, it is effective when the holding piece is configured to be thin.

Preferably, when the main body and the lid are combined, the bottom surface of the holding piece is substantially flush with the outer surface of the main body bottom wall.
Thus, when the bottom surface of the holding piece is positioned in the cutout portion by combining the main body and the lid, no recessed portion is formed in the cutout portion.

It is preferable that a thinned portion is provided on at least one of the bottom surface on the outer surface side of the holding piece and the upper surface on the side opposite to the bottom surface. When the holding piece is configured to be thick, the thickness is controlled by the thinned portion, and when a slide core is used in a molding die for molding the holding piece of the lid, the thickness of the slide core can be increased. Therefore, the strength of the slide core can be increased.

When a slide core is used in a molding die for forming the holding piece, a through hole is formed in the vicinity of the side wall where the holding piece is located. However, as described above, the side wall becomes thick. Therefore, the strength of the side wall does not decrease near the base of the holding piece.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a storage case for a disk-shaped medium according to an embodiment of the present invention. FIG. 2 is an inner plan view (a) of the storage case main body of FIG.
FIG. 3 is a cross-sectional view taken along line B (b), FIG. 3 is a plan view (a) of the inner surface of the lid of the storage case shown in FIG. 1, and a cross-sectional view taken along line BB-BB (b). FIG. 4 is a perspective view of the lid in FIG.

As shown in FIG. 1, the storage case has a rectangular shape including a main body 10 for storing a disk-shaped medium such as a CD and a lid 20 covering the main body 10. The main body 10 and the lid 20 are made of polystyrene. Each is formed by injection molding from resin (PC). As this resin material, AB
S, styrene acrylonitrile resin (SAN), AS,
Methacrylic resin (PMMA), polycarbonate (P
C) can also be used. The main body 10 and the lid 20 are rotatably connected to each other. The main body 10 is provided with a holding projection 15 for holding a disk-shaped medium, and the side wall 22 of the lid 20 is provided with a holding piece 25 for holding an index card or the like. Although the lid 20 is transparent or colored and transparent so that the index card attached to the inner surface thereof can be seen, the main body 10 may be other than transparent or colored transparent, or may be colored and opaque.

As shown in FIG. 1 and FIG.
Has a bottom wall 11 that forms a square main surface, and has a front wall 13, side walls 12, 12, and a rear wall 14 around the bottom wall 11. At substantially the center of the bottom wall 11, a holding projection 15 for holding a center hole of the disk-shaped medium is provided integrally. The holding protrusion 15 is formed in a ring shape as a whole so as to protrude from the bottom wall 11 side. Root 15a of holding projection 15
Is connected to the bottom wall 11, the periphery of which is surrounded in a U-shape to form a groove 15b, and the holding projection 15 is elastically deformable. Further, a ring-shaped projection 16a is formed at a position corresponding to the inner periphery from the recording area of the recording surface so that the recording surface does not contact the bottom wall 11 when the disk-shaped medium is attached to the holding projection 15. A ring-shaped projection 16b is also provided at a position corresponding to the outer periphery of the recording area of the disk-shaped medium.
Is provided. Further, an outer peripheral rib 17 having a diameter larger than the diameter of the disk-shaped medium is divided and formed on the outer periphery of the projection 16b.

Further, the side walls 12, 1 at the left and right ends of the main body 10 are provided.
2 includes extension portions 18a, 1 protruding rearward from the rear wall 14.
8b is formed, and support shafts 19a and 19b for rotatably mounting the lid 20 are provided on the extension portions 18a and 18b so as to protrude outward.

At the center of the side walls 12, 12, there are provided cutouts 12a, 12a from which the side walls 12 are cut in order to facilitate mounting and dismounting of the disk-shaped medium. Each resection 12
a on both sides of the notch 12 in which the bottom wall 11 is cut out in a concave shape
b, 12e are provided respectively. Each notch 12
The positions of b and 12e correspond to the positions of holding pieces 25 of the lid 20 described later. Walls 12c and 12f are formed on the main body 10 so as to protrude from the bottom wall 11 along the notches 12b and 12e.

As shown in FIG. 1 and FIG.
Has an upper wall 21 forming a rectangular main surface, and has side walls 22, 22 and a rear wall 24 on three sides around the upper wall 21. A portion corresponding to the front wall 13 of the main body 10 has no side wall, and a rib 23a for positioning an index card or the like is formed in a portion without this side wall.

As shown in FIGS. 1 and 3B, the lid 20
Each side wall 22 of the main body 10 has a side wall portion 22a formed higher in the center corresponding to the cutout portion 12a of the side wall 12, a side wall portion 22b formed on both sides of the side wall portion 11a and lower than the side wall portion 22a, A side wall portion 22c which is located substantially at the center of each side wall portion 22b and on which the holding piece 25 is formed.

As shown in FIG. 1, FIG. 3 and FIG.
In the side wall portion 22c, two holding pieces 25 are provided so as to protrude from each side wall 22 so as to face the upper wall 21, and a gap g is formed between the holding piece 25 and the inner surface 21a of the upper wall 21. It is designed to hold cards and the like.

The side wall portion 22c on which the holding piece 25 is formed
Is formed so as to protrude beyond the side wall portion 22b in the thickness direction of the storage case and to be almost as thick as the side wall portion 22a. For this reason, the height from the outer surface of the upper wall 21 of the lid 20 to the bottom surface 25c on the outer surface side of the holding piece 25 is substantially the same as the thickness of the storage case.

The holding piece 25 is formed relatively thick corresponding to the side wall portion 22c.
a, 25b are formed. Thereby, the holding piece 25
Since the thickness of the slide core provided in the molding die for forming the slab can be increased, the strength of the slide core can be increased, and sinks and the like during molding can be prevented, which is preferable. As shown in FIG. 7 (a) described later, the surface of the thinned portion 25a is inclined downward in the figure toward the wall, but this facilitates pulling out the slide core when releasing the mold after molding. To do that.

The inner surface 21a of the upper wall 21 and the holding piece 25
A through hole 28 is formed in the side wall portion 22c between them. The through hole 28 is formed by a slide core provided in a molding die for forming the holding piece 26. As described above, the side wall portion 22c provided with the holding piece 25 has a thickness of the storage case. The strength of the side wall 22 does not decrease in the vicinity of the base of the side wall portion 22c of the holding piece 25 because the thickness is almost the same as that of the holding piece 25.
Further, the gap g between the inner surface 21a of the upper wall 21 and the holding piece 25 can be made sufficiently large, so that even if the index card or the like becomes thick or a thick booklet or the like can be stored, it is preferable.

The upper wall 21 is provided with an extension 18 of the side wall of the main body 10.
a, 18b, and extend to the portion corresponding to the
Is wider than the bottom wall 11. The side walls 22, 22 are provided with holes 26a, 26b to which the support shafts 19a, 19b of the main body 10 are attached at portions corresponding to the extension portions 18a, 18b of the side wall of the main body 10, and the extension portions 18a, 1
Notches 27a, 27b so that 8b can enter
Are formed. Also, the holes 26a, 26b of the upper wall 21
A rib 23b for regulating the position of an index card or the like is also provided on the inner surface on the side.

In this embodiment, the height of the rear wall 24 of the lid 20 is low because the storage case is thin.
When the rear surface of the L-shaped index card is set so as to be positioned on the inner surface of the rear wall 24, the width of the rear surface of the index card is about 4 mm, which makes it difficult to write and read characters. Although an index card cannot be mounted, an L-shaped index card can be mounted by removing the rib 23b if necessary.

Next, a description will be given of a storage case in which the support shafts 19a and 19b of the main body 10 are attached to the holes 26a and 26b of the lid 20, and the main body 10 and the lid 20 are combined. FIG. 5 is a side sectional view showing a state where the disk-shaped medium is stored in the main body and the lid is opened, and FIG. 6 is a side view showing a state where the lid is closed with respect to the main body.

The disk D is attached to the main body 10 and housed therein, and the index card 3 is inserted into the gap g between the ribs 23a and 23b of the lid 20 and between the inner surface 21a of the upper wall 21 and the holding piece 25. The cover 10 is rotated with respect to the main body 10 from the open state in FIG. 5 to the closed state in FIG. At this time, the thick side wall portion 22c of the lid side wall 22 is provided with the notches 12b, 12
e, there is no problem of interference with the main body bottom wall side due to the thick side wall portion 22c. The side wall portion 22c provided with the holding piece 25 constitutes a side surface of the storage case when the main body 10 and the lid 20 are combined, and has substantially the same total thickness.

As shown in FIG. 5, the length L1 from the center of rotation of the main body 10 and the lid 20 to the rear wall 14 of the main body 10
Is longer than the distance L2 from the center of rotation to the front end of the rear wall 24 of the lid 20, so that the lid 20 can be opened 180 degrees or more with respect to the main body 10.

FIGS. 7A, 7B, and 7C are cross-sectional views taken along the lines aa, bb, and cc of FIG. 6, respectively. Referring to FIG. 7A, as described above, the through holes 28 are formed in the side walls 22 for forming the holding pieces 25.
Is formed, and the portion having the through hole 28 is formed as a thick side wall portion 22c in the thickness direction of the storage case. Therefore, the storage case is made thin and the strength of the side wall 22 does not decrease even if the through hole 28 exists. I understand. Also, there are notches 12b and 12e in the main body bottom wall 11 corresponding to the holding pieces 25, and the holding pieces 25 are located in the notches 12b and 12e in the closed state.
In order to supplement the notches 12b and 12e, the holding piece 25 has a bottom surface 25c that reaches the lower surface of the side wall portion 22c and forms substantially the same surface as the outer surface 11a of the main body bottom wall 11. As a result, the notch 12 is closed with the lid 20 closed.
The b and 12e are not recessed on the outer surface 11a of the storage case, which is preferable in terms of handling and appearance of the storage case.

Further, as can be seen from FIG.
Since the upper surface 12g of 2f is located above the bottom surface 25c of the holding piece 25 and the wall 12f and the holding piece 25 overlap in the thickness direction of the storage case, it is possible to prevent intrusion of dust, which is preferable. This configuration is particularly effective when the thickness of the holding piece 25 is reduced and the bottom surface 25c is positioned above the drawing. The walls 12c and 12f have the effect of reinforcing the bottom wall 11 around the cutouts 12b and 12e.

As can be seen from FIGS. 7 (b) and 7 (c), the side wall portion 22a of the side wall 22 of the lid 20 is positioned so as to supplement the cutout portion 12a of the side wall of the main body 10.
An inclined surface 12d for facilitating removal of the disk-shaped medium is formed on the inner surface of the main body bottom wall 11 near 2a, and the tip of the side wall portion 22b is located on the outer flat portion 12g of the main body side wall 12. I have.

As described above, according to the storage case of the present embodiment, even if the storage case is made thinner, sheet materials such as index cards and booklets having the same thickness as the conventional case can be stored. The strength in the vicinity of the wall having the holding piece for holding the sheet material does not decrease. Thereby, the thickness of the storage case can be configured to be, for example, about 5 mm, which is particularly advantageous when a large number of storage cases are stored side by side.

Although the present invention has been described with reference to the embodiments, the present invention is not limited to these embodiments.
Various modifications are possible within the scope of the technical idea of the present invention. For example, in the present embodiment, the side wall portion where the holding piece is located is made high (thick), but the side wall of the lid may be made all high. Further, the thinned portion of the holding piece may be omitted, or may be formed on one of the upper surface side and the bottom surface side.

[0034]

According to the disk-shaped body storage case of the present invention, even if the storage case is made thin, a sheet material such as a thick index card can be stored, and the holding piece for holding the sheet material can be formed. The strength of the side wall does not decrease near the base.

[Brief description of the drawings]

FIG. 1 is a perspective view of a storage case for a disk-shaped medium according to an embodiment of the present invention.

FIG. 2 is an inner plan view of the main body of the storage case shown in FIG. 1 (a).
And (b) is a sectional view taken along line BB.

FIG. 3A is an inner side plan view of a lid of the storage case of FIG. 1;
And (b) is a sectional view taken along line BB-BB.

FIG. 4 is a perspective view in which a portion near a holding piece of the lid in FIG. 3 is partially cut.

FIG. 5 is a side sectional view showing a state where a disk-shaped medium is stored in the main body of FIG. 2 and the cover of FIG. 3 is opened.

FIG. 6 is a side view showing a state in which the lid of FIG. 3 is closed with respect to the main body of FIG. 2;

7 is sectional views (a), (b), and (c) taken along lines aa, bb, and cc of FIG. 6, respectively.

[Explanation of symbols]

 3 Index Card 10 Main Body 11 Bottom Wall 12 Side Wall 12b, 12e Notch 12c, 12f Wall 13 Front Wall 14 Rear Wall 15 Holding Protrusion 20 Lid 21 Top Wall 22 Side Wall 22c Side Wall Part with Holding Piece 24 Rear Wall 25 Holding Piece 25a , 25b Thinned portion 28 Through hole D Disk-shaped medium

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yukio Miyazaki 1-13-1 Nihonbashi, Chuo-ku, Tokyo Inside TDK Corporation (72) Inventor Sadatoshi Umeki 1-13-1 Nihonbashi, Chuo-ku, Tokyo Within DK Corporation (72) Inventor Tomoaki Kuramochi 1-13-1 Nihonbashi, Chuo-ku, Tokyo F-term within DK Corporation 3E036 AA05 BA03 FA01 FB01

Claims (5)

[Claims] 1. A bottom wall having a bottom wall and a side wall for storing a disk-shaped medium, and a lid body having a top wall and a side wall for covering the main body, wherein a bottom wall of the main body is provided. A holding projection for holding a center hole of the disk-shaped medium is formed at a central portion of the disk-shaped medium, and a holding piece for holding a sheet material between the upper wall and the holding member protruding from a side wall of the lid body is formed. Wherein at least a side wall portion of the lid having the holding piece is substantially equal to the thickness of the storage case when the main body and the lid are combined. A disk-shaped medium storage case, wherein a notch is provided in a bottom wall of the main body corresponding to a holding piece. 2. A wall is formed along the notch of the bottom wall of the main body, and when the main body and the lid are combined, the upper surface of the wall facing the upper wall of the lid is the upper surface of the holding piece. The disk-shaped medium storage case according to claim 1, wherein the disk-shaped medium storage case is configured to enter the inside of the storage case from a bottom surface on an outer surface side. 3. A combination of the main body and the lid, wherein a bottom surface of the holding piece is configured to be substantially flush with an outer surface of the main body bottom wall. 3. The disk-shaped medium storage case according to 1 or 2. 4. The disk-shaped medium according to claim 1, wherein a thinned portion is provided on at least one of a bottom surface on an outer surface side of the holding piece and an upper surface opposite to the bottom surface. Storage case. 5. The disk-shaped medium storage case according to claim 1, wherein a through-hole is formed in the vicinity of a side wall portion of the lid body where the holding piece is located.