JP2002128175A - Disc holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk holder capable of stably and easily storing and holding various thin disks having a center hole to prevent accidental falling off. SOLUTION: The disc holder 13 of the present invention comprises a top sheet 14 and a back sheet 1 made of a plastic sheet.
5 and the adjacent two sides (16, 17) are closed, and a width smaller than the diameter of the center hole B of the disc A from substantially the center of the topsheet 14 toward the corner 18 where the closed sides intersect. The notch 19 is provided to form a locking piece 20, and the top sheet 14 and the back sheet 15
The locking piece 20 of the top sheet 14 can be inserted into the center hole B of the disc A with respect to the disc A positioned between them, thereby preventing the disc A from falling off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk holder which can stably and easily store and hold various thin disks having a central hole to prevent accidental dropping.

[0002]

2. Description of the Related Art Compact discs (CDs) and CD-Rs
Disc-type recording media (hereinafter, simply referred to as discs) such as OM, CD-I, and DVD are generally sold in a state of being protected by a plastic hard case. When attached, it is often protected and enclosed with a simple wrapping material made of cardboard or the like. In recent years, however, these discs have become enormous types, and the trend is increasingly strong. To continue using simple packaging materials such as hard cases and cardboard at the time of sale in homes and workplaces, the thickness is increased. There was a problem that was too long. In recent years, various types of disk holders have been proposed, and for example, those having a structure as shown in FIGS.

The holder 1 shown in FIG. 1 has a configuration in which arc-shaped cuts 3 and 3 are provided on the left and right at substantially the center of a sheet 2, and the disc A faces the disk A with the cuts 3 and 3 standing upright. After inserting the left and right upright cut pieces 4 into the center hole B of the disc A, the cut pieces 4 are opened right and left to hold the disc A. The diameter of each cut piece 4 is formed to be substantially the same as the diameter of the center hole B of the disk A. 1 (b),
(C) is a partially enlarged view showing an insertion state and a state of the cutting piece 4. The holder 5 shown in FIG.
It is a configuration in which a notch having a wide distal end portion 7 is provided,
After the notch 8 is raised and inserted into the center hole B of the disc A with the tip 7 forcibly narrowed, the tip A is opened right and left to hold the disc A. Since the holders 1 and 5 need supporting strength, a cardboard or a relatively hard plastic plate (sheet) is often used as a material.

[0004] The holder 9 shown in FIG.
11 are stacked so that only one side is an open portion 12, and the holder 9 'in FIG.
It is configured as a foldable (book-shaped) product with 9 open portions 12, 12 facing the inside. Since the holders 9 and 9 'are often stored in a support storage body (not shown), a soft material such as a nonwoven fabric is often used.

[0005]

However, although the holder 1 shown in FIG. 1 can stably hold the disc A in a predetermined holding state, the diameter of the left and right cut pieces 4 is substantially the same as that of the center hole B of the disc A. Since it is formed to have a diameter, it is necessary to operate it against friction or the like when inserting it into the center hole B of the disk A. Also, since the left and right cut pieces 4 cannot be stably maintained in an upright state. , Operation was difficult.
Further, a notch 4 is formed from the back side (recording side)
Is inserted, there is also a problem that the tip of the cut piece 4 easily damages the recording surface of the disc A in the case of wrong eye measurement. When the left and right cut pieces 4 are stably maintained in an upright state, the work of inserting the cut piece 4 into the disk A becomes easy, but thereafter, the cut pieces 4 are difficult to open left and right (hard to fall down). The holder 5 of FIG. 2 is also the same, and there is a problem that the holding operation of the disk A is difficult and the recording surface of the disk A is easily damaged. On the other hand, the holder 9 shown in FIG. 3 is very easy to insert the disc A from the open portion 12, but easily falls off from the open portion 12, so that the holder 9 cannot be used alone. On the other hand, in the holder 9 ′ of FIG. 4, the open portion 12 is on the inner side of the fold, so that a stable holding property can be obtained in a closed state. However, there is a problem that the other disk A easily moves (drops). As described above, the conventional holders 1, 5, 9, and 9 'have a problem that the operation for holding the disk A is complicated in FIGS. 1 and 2 and the recording surface of the disk A is easily scratched. In FIGS. 3 and 4, there is a problem that the disk A is likely to fall off and cannot be stably held. Therefore, an object of the present invention is to propose a disk holder that can stably and easily store and hold various thin disks having a center hole to prevent accidental dropping.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above, and has been found after intensive studies. In this invention, a top sheet and a back sheet made of a plastic sheet are laminated and two adjacent sides are closed. By forming a notch having a width smaller than the diameter of the center hole of the disk from the approximate center of the top sheet toward the corner where the two closed sides intersect, a locking piece is formed. The present invention relates to a disk holder capable of preventing a disk from falling off by inserting a locking piece of a top sheet into a center hole of the disk with respect to the disk positioned at position (1). Incidentally, the front sheet and the back sheet are added for the sake of convenience for ease of explanation, do not limit the arrangement direction of the disks to be stored, and may be different from the front and back surfaces in the product form. . For example, as shown in FIGS. 6 and 7, which will be described later, both front and back surfaces are made of a plastic sheet, and when a product form such as two-sided or four-sided is used, the folded inner surface has a front surface. The sheet may be located.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The disk holder of the present invention has a structure in which a top sheet and a back sheet are laminated, and the top sheet is made of a plastic sheet, but the back sheet is not particularly limited in its material. For example, the back sheet may be the same plastic sheet as the top sheet, a composite material in which a sheet having a lower hardness than the disc such as a non-woven fabric is adhered to the inner surface (the side in contact with the recording surface of the disc), or a non-woven fabric. The sheet itself having a lower hardness than that of the disc may be used.

The top sheet is made of a plastic sheet. Considering the supporting force of the disk by the locking piece, the tensile modulus is 200 MPa or more, the friction coefficient is 1.0 or less, the purine hardness is 5 or more, the Rockwell hardness is R-60 or more, It is made of a thermoplastic resin with a thickness of 0.1 to 1.0 mm, and is made of polyolefin such as polypropylene and polyethylene, polycarbonate, acrylic resin, polystyrene, ABS resin, polyester resin, biodegradable resin, vinyl chloride resin alone, or a composite material. It is desirable.

The surface sheet may be transparent so that the surface of the disk can be seen, or may be made of oil-based ink, ultraviolet-curable ink, electron beam-curable ink, or the like, whose surface (or back surface) cures quickly and has a low heat history. Various designs, designs, and the like may be printed by offset printing, gravure printing, flexographic printing, screen printing, or the like that does not change the dimensions of the sheet. In addition, in the case of a product form such as two-sided or four-sided as described above, since the topsheet is designed to be located on the folded inner surface side, it is not particularly limited, but in that case, Is often printed on the back sheet side.

[0010] The top sheet and the back sheet are substantially rectangular, and two adjacent sides are closed, and the other parts are open. The "blockage" may be any condition as long as the internal disk does not fall off from the side. For example, even if the vicinity of the corner is open as in the illustrated embodiment (FIGS. 5 to 7) described later. good. Further, as described above, the top sheet and the back sheet may be the same material or different materials. However, in the case of the same material, the two sides to be closed are formed by bending, creasing, welding, or the like. In the case of a material, the material is closed by heat sealing or bonding with an adhesive or the like. Further, if necessary, a part of the other side may be closed in addition to the two adjacent sides so as not to hinder the operation of taking in and out the disk (see FIG. 6).

The top sheet is provided with a notch having a width smaller than the diameter of the center hole of the disk from the substantially center toward the corner where the two closed sides intersect. This cut (piece)
Is the locking piece. When this locking piece is inserted into the center hole of the disk, the surface side of the locking piece may come into contact with the recording surface of the disk. It is desirable to attach a sheet having lower hardness. Also, the tip of the locking piece is desirably semicircular so as not to damage the recording surface of the disk. Furthermore, not only the locking piece but also the surface that may come into contact with the recording surface of the disk, that is, the inner surface side of the top sheet or the back sheet is formed of a sheet having lower hardness than the disk for the purpose of protecting the recording surface of the disk. It is desirable to do.

Hereinafter, embodiments of the drawings will be described. The disk holder 13 shown in FIG.
Both the back sheet 4 and the back sheet 15 are transparent plastic sheets, and two adjacent sides (16, 17) are closed. The closing part 16 on the left side of the drawing is bent and bent to form the closing part 17 on the lower side of the drawing.
Is closed by heat sealing, and the other upper and right sides of the drawing are open (open portion 21). Also, the top sheet 14 has two sides (16, 1) closed from substantially the center.
A notch 19 having a width smaller than the diameter B of the center hole of the disc A and having a semicircular tip is provided toward the corner 18 where the 7) intersects. The notch 19 becomes the locking piece 20.

The procedure for holding the disk A in the disk holder 13 having such a configuration will be described below. First, FIG.
The disc A is inserted from the open portion 21 of (a) and is positioned between the top sheet 14 and the back sheet 15. Since the open portion 21 is extremely wide with respect to the diameter of the disc A, this operation can be performed very easily, and can be performed clearly easily even in comparison with the conventional holder 5 of FIG. Next, as shown in FIG. 5B, the locking piece 20 is once raised and its tip is inserted into the center hole B of the disk A. Since the width of the locking piece 20 is small with respect to the center hole B of the disc A, this operation can be performed very easily and reliably, and the notches 4 and 8 in the conventional holders 1 and 5 shown in FIGS. Can be clearly and easily performed even in comparison with the inserting operation. Moreover, since the locking piece 20 is inserted from the front side to the back side of the disk A, the tip of the locking piece 20 does not damage the recording surface on the back side of the disk A even if the measurement is mistaken. Then, as shown in FIG. 5 (c), the locking piece 20 inserted is moved along the back side of the disk A to obtain a stable holding state. This operation is not difficult at all, but the operation can be performed by putting a hand from the wide open portion 21, and the holding state as shown in the drawing can be reliably obtained. In this holding state, the upper surface of the locking piece 20 and the recording surface of the disk A are in contact with each other in this holding state. It is desirable to stick a low sheet. Although it is needless to say that the disc A cannot move in the direction of the closing portions 16 and 17 in this holding state, even if the disc A attempts to move in the direction of the open portion 21, the disc A slides in the base end direction of the locking piece 20. , So that the locking is deep and does not fall off.

As described above, the disc holder 13 of the present invention
Can very easily and stably hold the disk A. The disc A is stably housed and held even if it attempts to move back and forth (up and down and right and left in the drawing), so that accidental dropping can be prevented. The disc holder 13 has a very simple shape and configuration,
Punching (formation of cut 19), bending (closing portion 16)
) And heat sealing (formation of the closed portion 17).

The disk holder 22 shown in FIG. 6 is an embodiment in which the disk holder 13 shown in FIG. 5 is provided with one surface, whereas the disk holder 13 shown in FIG. It is suitable as a foldable (book-shaped) product like the conventional holder 9 'of FIG. Since the configuration is almost the same as that of FIG. 5, the same reference numerals are given to the drawings and the description is omitted. Further, instead of a single fold line (center line 23), a double fold line may be used. In the illustrated embodiment, the outer side and the lower side are both closed portions 17 closed by heat sealing. The disc holder 22 allows the left and right holders to independently and easily perform the operation of holding the disc A independently as described above, and stably stores and holds the disc A to prevent accidental dropping. Can be prevented. Therefore, as in the case of the conventional holder 9 'in FIG. 4, the disc A held by the other holder 9 moves (drops) when the disc A is taken in and out of one of the right and left holders 9. Absent.

In the illustrated embodiment, a short-width second closing portion 24 is provided at the end of the open portion 21 to restrict the movement of the disc A and reduce the stress acting on the locking piece 20. I did it. That is, for example, in the holder on the left side of the drawing, the disk A is closed in the leftward and downward directions.
7, but cannot move in the direction of the open portion 21, more specifically, in the upward direction, the upper right direction, and the right direction. Therefore,
When the second closing portion 24 as shown in the drawing is provided, at least the upward and rightward movements are restricted, and the lower leftward (=
Only the rightward upper-facing stress acts on the locking piece 20 formed from the center to the corner 18), and it is assumed that the surface sheet 14 is made of a relatively soft plastic sheet. Also, the locking piece 20 can be stably held without twisting or the like at the base end.

Although not shown, such a second closing portion 24 may be provided in the disk holder 13 shown in FIG. 5 or a disk holder 25 shown in FIG. 7 described later. .

The disc holder 25 shown in FIG. 7 has the disc holder 13 shown in FIG.
Is an embodiment of four-sided mounting, whereas the disk holder 22 is folded along the center line 23A and then folded along the center line 23B (book shape). ) Product.

As described above, in the embodiment shown in FIGS. 6 and 7, both the front and back surfaces are made of a plastic sheet.
Although there is no particular limitation since the top sheet 14 is located on the folded inner surface side in a product form such as double imposition or four imposition, printing is performed on the back sheet 15 side in this case. Many.

[0020]

Example 1 A biaxially stretched polypropylene sheet (thickness: 200 μm, manufactured by Kami Kasei Co., Ltd., with an inner surface subjected to air matting) was cut and cut to a predetermined size, and a high-frequency welder was formed. Then, welding was performed on two adjacent sides to obtain a product having a schematic shape as shown in FIG. The polypropylene sheet used had a tensile modulus of 2000 MPa, a Brinell hardness of 25, and a friction coefficient of 0.40, and was subjected to offset printing with an ultraviolet curable ink on the inner surface on the side to be the top sheet. The operation of storing and holding the compact disc in the obtained disc holder was extremely simple, and the held compact disc was stably held even if it was swung in any direction including front, rear, left and right.

Example 2 A non-stretched biodegradable sheet (150 μm in thickness, manufactured by Mitsubishi Plastics, Inc.) was cut and cut into a predetermined size, and welded on two adjacent sides using a high-frequency welder. Processing was performed to obtain a product having a schematic shape as shown in FIG. The biodegradable sheet used had a tensile modulus of elasticity of 3400 MPa, a Brinell hardness of 30 and a friction coefficient of 0.28, and was subjected to silk printing with an ultraviolet curable ink on the outer surface on the side to be the top sheet. The operation of storing and holding the compact disc in the obtained disc holder was extremely simple, and the held compact disc was stably held even if it was swung in any direction including front, rear, left and right.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and can be implemented in any manner unless the configuration described in the claims is changed. it can.

[0023]

As described above, the disk holder of the present invention can stably and easily store and hold various disks to prevent accidental dropping.

[Brief description of the drawings]

1A is a plan view showing an example of a conventional disk holder, FIG. 1B is an enlarged sectional view showing a situation where a cut piece is inserted, and FIG. 1C is an enlarged sectional view showing a state where a cut piece is inserted.

FIG. 2 is a plan view showing another example of the conventional disk holder.

FIG. 3 is a plan view showing another example of a conventional disk holder.

FIG. 4 is a plan view showing another example of the conventional disk holder.

5A is a plan view showing an example of the disk holder of the present invention, FIG. 5B is a partially cutaway sectional view showing a situation in which a locking piece is inserted, and FIG. 5C is a state in which the locking piece is inserted. And (d) is a plan view with a part cut away.

FIG. 6 is a plan view showing another example of the disc holder of the present invention in an expanded state.

FIG. 7 is a plan view showing another example of the disc holder of the present invention in an expanded state.

[Explanation of symbols]

 13, 22, 25 Disc holder 14 Top sheet 15 Back sheet 16 Closed portion (due to bending and bending) 17 Closed portion (due to heat sealing) 18 Corner 19 Notch 20 Locking piece A Disk B Center hole

Claims (6)

[Claims] 1. A top sheet and a back sheet made of a plastic sheet are laminated, two adjacent sides are closed, and a center hole of the disk is formed from a substantially center of the top sheet toward a corner where the closed sides intersect. By providing a notch with a width smaller than the diameter, a locking piece is formed, and for the disc located between the top sheet and the back sheet,
A disc holder that can prevent the disc from falling off by inserting the locking piece of the top sheet into the center hole of the disc. 2. A sheet surface in contact with a recording surface of a disc,
2. The disk holder according to claim 1, wherein the sheet has a hardness lower than that of the disk. 3. The top sheet has a tensile modulus of 200 MPa.
Above, a friction coefficient of 1.0 or less, a Prinell hardness of 5 or more, a Rockwell hardness of R-60 or more, made of a thermoplastic resin having a thickness of 0.1 to 1.0 mm, polypropylene, polyolefin such as polyethylene, polycarbonate, acrylic resin, polystyrene, 3. The disk holder according to claim 1, wherein the disk holder is made of an ABS resin, a polyester resin, a biodegradable resin, a vinyl chloride resin alone, or a composite material. 4. The top sheet or the back sheet is made of an oil-based ink, a UV-curable ink, an electron beam-curable ink, etc., which cures quickly and has a low heat history, such as offset printing, gravure printing, flexographic printing, and screen printing without changing the dimensions of the sheet. The disc holder according to any one of claims 1 to 3, wherein the disc holder is a plastic sheet printed by printing or the like. 5. The two sides to be closed are bent and crooked,
The disk holder according to any one of claims 1 to 4, wherein the disk holder is formed by processing such as welding. 6. The disk holder according to claim 1, wherein a tip of the locking piece has a semicircular shape.