JPH0128009Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a box made of a sheet of slightly flexible synthetic resin, and is mainly used for storing relatively easily damaged disk-shaped items such as floppy disks and video disks. This relates to a book-type box used for storage and packaging.

[Prior art and its problems] There are boxes for storing or packaging the above-mentioned floppy disks, etc., whose lids can be opened and closed in a book-like manner relative to the storage compartment, but conventional paper boxes do not have enough cushioning. In addition to poor performance, the manufacturing process is time-consuming due to the large number of bonding points between the component parts, resulting in high costs.

In recent years, it has also been considered to construct a book-type box using a flexible, soft synthetic resin sheet (Japanese Utility Model Publication No. 44-3996). However, in the box disclosed in the above publication, the stiffness of the soft synthetic resin sheet is reinforced by a hard core plate sandwiched between the front and back sheets, and the storage section is separately formed from synthetic resin foam and is heat-fused to the sheet. They are attached by adhesive or adhesive means, and require multiple constituent materials and many adhesive points, making their production extremely troublesome, time-consuming, and costly. Note that although the foam sheet made of soft synthetic resin has the flexibility to protect the contents, it is weak and cannot sufficiently maintain its shape as a book-type box.

In addition, a box made of a plate made of hard synthetic resin foam has poor cushioning properties, and is not at all preferable as a book-type box for storing the above-mentioned floppy disk or the like.

In view of the above, the present invention uses a slightly flexible synthetic resin sheet as a material and other reinforcing members as a book-type box with appropriate cushioning properties suitable for storing floppy disks, etc. To provide a box which has sufficient shape-retaining strength on the side wall of a storage part without any need for storage, has a simple structure, has few adhesive parts, and can be manufactured easily and inexpensively.

[Means for Solving the Problems] In the box of the present invention which solves the above problems, the container and the lid are connected and made of a slightly flexible synthetic resin sheet, and the container is a flat surface. Each edge of the rectangular bottom plate except for the connecting side edge with the lid body is connected with a folded edge plate that folds back and overlaps the periphery of the bottom plate, and each folded edge plate has a folded edge plate located slightly inward of the periphery of the bottom plate. In this case, an outer plate that is bent and stands up so as to constitute side walls on three sides of the storage portion, and an inner plate that is folded and overlapped with the outer plate are sequentially connected, and are connected to the inner plate of the side wall that faces the connecting side edge with the lid body. The fastening piece thus formed is fixed to the bottom plate when the side wall is in an upright state, and the folding connecting piece connected to the end of the inner plate and/or outer plate of both side walls adjacent to the side wall is fixed to the bottom plate when the side wall is in an upright state. The inner and outer plates, which are sandwiched between the inner and outer plates of the side wall and which are formed separately from the inner and outer plates to constitute the side wall connected to the lid body, are held in an upright state by fastening pieces connected to both edges of the inner and outer plates. A folding connecting piece is fixed to the side edge of the bottom plate and connected to the ends of the inner and/or outer plates of the adjacent side walls, and is inserted between the inner and outer plates of the side wall. The main plate of the lid body is bendably connected to the remaining one side edge of the bottom plate via a connecting plate having approximately the same width as the height of the side wall. A side wall plate is connected to each side edge other than the connecting side edge by folding and standing at a position slightly inward of the peripheral edge with respect to the main plate part via a folded edge plate, and a side wall plate is connected to the side wall plate that is bent and stands up at a position slightly inward of the peripheral edge of the main plate part. An inner side plate is connected to the side wall plate that bends and overlaps with the side wall plate, and this inner side plate is fixed by a fastening piece connected to the side edge, and the ends of the adjacent side wall plates are attached to the side wall plate. A folding connection piece connected to the container is inserted between the inner plate and the side wall plate, and the lid body is configured to be able to fit onto the side wall of the storage part of the container. It is something.

[Function] According to the present invention having the above-described configuration, the lid body connected to one side edge of the bottom plate can be folded into a book-like manner with respect to a container having a storage portion without any problem, and can be fitted, opened and closed. Of course, it is possible, especially since each of the four side walls of the storage section of the container has a double structure with inner and outer plates that are continuously folded and overlapped at the upper edge, so even if the constituent material is a sheet of slightly flexible synthetic resin. Regardless, the side walls are strong, and the three side walls are connected and erected via the folded edge plate to the peripheral edge of the bottom plate, and in addition, the other side wall is fixed to the bottom plate and is connected to this side wall. The inner plates of the opposing side walls are fixed to the bottom plate, and the folding connecting pieces connected to at least one of the inner and outer plates of the other opposing side walls are sandwiched between the inner and outer plates of the fixed side walls. Since the side walls are inserted and held, each side wall is stably held in a predetermined upright state without the risk of undue upheaval or tilting while being connected to each other at a slightly inward position of the peripheral edge of the bottom plate. Even if there are only a few parts fixed by heat-sealing means, etc., the shape retention is excellent in combination with the stiffness. Furthermore, the periphery of the bottom plate that protrudes from the side wall is also reinforced with a double structure by the folded edge plate, and the periphery of the main plate of the lid connected to the container is also double-layered. The structure is reinforced and the box as a whole has sufficient strength to retain its shape. Also, since the material is somewhat flexible,
It can be easily bent at the connecting parts of each component, and this bent part also has sufficient strength.

Further, the upper edge of the side wall and the periphery of the bottom plate are formed by continuous bending of the material sheet so that no end surface is exposed, giving a good feel to the touch and a good appearance. In addition, since it is made of a slightly flexible sheet, the material has appropriate cushioning properties and the surface is relatively flexible, allowing easily-scratch items such as floppy disks to be safely stored without fear of damage. .

Furthermore, in the present invention, the lid is connected to the container and the side wall plate is configured to fit into the side wall of the storage section, so the appearance and stability of the lid when it is closed like a book is improved. Good and does not open easily.

[Example] Next, an example of the present invention will be described based on the drawings.
A shows a box according to the present invention constructed from a plate-like sheet of slightly flexible synthetic resin, with four side walls a,
It is constructed by connecting a container 1 and a lid 2 having a storage section surrounded by b, c, and d.

The container 1 described above is constructed as follows. On each side edge of the bottom plate 3 having a rectangular shape in plan except for one side edge that is connected to the lid body 2, there are folded edge plates 4a, 4b, 4c of a slightly wide width that are folded back and overlapped with the bottom plate 3 at fold lines 5, 5, 5, and the end portions of each folded edge plate 4a, 4b, 4c are formed with oblique notches so as to be able to abut against each other in the folded state, and further The folded edge plates 4a, 4b, 4c have outer plates 7a, 7b, 7c and inner plates 8a, 8b, 8c constituting the three side walls of the storage section 6 at fold lines 9, 9,
The outer plates 7a, 7b, 7c are bent and raised from the folded edge plates 4a, 4b, 4c, and the inner plates 8a, 8b, 8c are connected sequentially through the folded edge plates 4a, 4b, 4c. are bent at their upper edges and overlapped to form side walls a, b, and c at slightly inward positions of the peripheral edge of the bottom plate 3. Then, a fastening piece 12b is connected to the inner plate 8b of the side wall b opposite to the remaining one side edge, that is, the connecting side edge with the lid body 2, through the fold line 11, and the inner and outer plates 7
With the side wall b formed by b and 8b in an erect state, this fastening piece 12b is fixed to the bottom plate 3 by thermal fusion using high frequency heating or by adhesive means, thereby holding the side wall b in an erect state and fixing the side wall b. Inner and outer plates 8a, 7a, 8c, 7c of both side walls a and c adjacent to b
Fold the connecting pieces 13a and 13c into the ends of the fold line 1.
4 and 14, these folding connecting pieces 13a and 13c are connected to the inner and outer plates 8b and 8b of the side wall b, respectively.
7b to connect the side walls to each other and to prevent the inner and outer plates 8a, 7a, 8c, and 7c from springing up, that is, to hold both side walls a and c in an upright state. . In addition to this, the inner and outer plates 8d forming the side wall d on the side connected to the lid 2,
7d, and fastening pieces 18d and 17d are connected to both edges of the inner and outer plates 8d and 7d, respectively.
7d is folded into two along the fold line 16 and folded and overlapped with each other, both of the fastening pieces 17d and 18d are fastened to the edge of the bottom plate 3 on the side opposite to the side wall b using the same heat-sealing means as described above. By attaching the inner and outer plates 7d and 8d, the side wall d is maintained in an upright state, and the edges of the inner and outer plates 8a, 7a, 8c, and 7c of the adjacent side walls a and c are folded. Line of sight 2
The folding connecting pieces 21a, 21c are connected via the 0, 20, and these folding connecting pieces 21a, 21c are inserted between the inner and outer plates 8d, 7d of the side wall d, and the inner and outer plates 8a, 7a, 8c, 7c are connected. In addition, the side wall a,
It improves the shape retention of c.

Moreover, the lid body 2 is constructed as follows. A connecting plate 23 having approximately the same width as the height of the side wall is connected to the connecting side edge of the bottom plate 3 with the lid body 2 via a fold line 22, and a connecting plate 23 having a width approximately the same as the height of the side wall is connected to the connecting plate 23 via a fold line 24. The main plate part 25 of the lid body 2 is arranged so as to be bendable. On each side edge of this main plate portion 25 except for the side edge connecting with the container 1, there are folded edge plates 26e, 26 with a slight width.
A side wall plate 27 that is bent and stands up at a position slightly inward of the peripheral edge of the main plate portion 25 via f and 26g.
e, 27f, and 27g, and the side wall plate 27f facing opposite to the side connected to the container 1 is connected with an inner plate 28f which is bent and overlapped with the side wall plate 27f. The fastening pieces 29 are linked together, and with the side wall plate 27f and the outer plate 28f standing upright relative to the main plate part 25, the fastening pieces 29 are fixed to the main plate part 25 by heat fusion or adhesive means. At the same time, both side wall plates 27 adjacent to this
Folding connecting piece 30 connected to the end of e, 27g
e, 30g is inserted between the side wall plate 27f and the inner side plate 28f, so that each side wall plate 27
e, 27f, and 27g are held in an upright state with respect to the main plate portion 25. In particular, the dimensions of the lid body 2 are set so that the side wall plates 27e, 27f, and 27g can fit inside or outside of the side walls a, b, c, and d of the container 1,
The lid body 2 is provided so as to be able to be fitted and attached to the storage portion 6 of the container 1.

In addition, fold-in connecting pieces 13a, 13c, 21c for connecting side walls a, c and side walls b, d of the container 1 are provided.
As in the above embodiment, the inner and outer side plates 8a, 7
In addition to providing it in both a, 8c, and 7c,
Although it is possible to provide this on only the outer plates 7a, 7c or the inner plates 8a, 8c, it is desirable to provide it on both the inner and outer plates from the viewpoint of preventing springing up, shape retention, etc. In addition, each fold line, which is the connecting part of each of the above-mentioned constituent parts, does not need to be intentionally formed in the manufacturing process, as long as it can be easily bent due to the flexibility of the sheet material. Depending on the thickness, material, and other needs of the sheet, creases such as V-grooves may be formed in advance to facilitate bending by heating and pressing.

The sheet of slightly flexible synthetic resin that is the above constituent material is mainly made of foamed synthetic resin that is slightly more flexible than styrene-ethylene copolymer, ethylene-vinyl acetate copolymer, and other polystyrene resins and slightly harder than polyethylene resin. A foam sheet that is extruded and formed into a sheet with a magnification of about 5 to 20 times and has some firmness and moderate flexibility, that is, a foam sheet that has properties intermediate between polystyrene resin foam and polyethylene resin foam. It can be suitably used. Also, the foaming ratio is 2 to 10.
It is also possible to use a sheet of polypropylene resin foam of about twice the size. Furthermore, a sheet obtained by laminating the synthetic resin foam sheet with a non-foamed synthetic resin as a reinforcing skin layer can also be used. The thickness of these sheets varies depending on the material, but the thickness ranges from 0.3 to
A material with a diameter of about 2.0 mm is preferably used.

Then, from a wide-area sheet material made of the above-mentioned material, the main sheet A' and the sheet A'' for forming the side wall d as shown in FIG. Form each component by making appropriate cuts and crease lines.
In assembly from this sheet, the folded edge plates 4a, 4b, 4c around the bottom plate 3 are folded over the bottom plate periphery, and the outer plates 7a, 7b, 7c are folded onto the folded edge plates 4a, 4b, 4c. Then, each inner plate 8a, 8b, 8c is bent downward so as to overlap the outer plate 7a, 7b, 7c, and at the same time, the inner and outer plates 8a, 7a, 8c, 7
The folding connecting pieces 13a and 13c connected to the bottom plate 13a and 13c are sandwiched between the inner and outer plates 7b and 8b of the adjacent side walls, respectively, and the fastening piece 12b is attached to the bottom plate 3 by heat-sealing means such as high-frequency heating or adhesive means. The inner and outer plates 8d and 7d, which are formed separately, are bent and overlapped to form the respective side walls a, b and c, and then folded between the side plates 8d and 7d to form connecting pieces 21a and 21c. Fixing pieces 17d and 18d that sandwich and connect to the bottom plate 3 are fixed to the bottom plate 3,
Assemble container 1. Note that when the inner plates 8a, 8c do not have the continuous folding pieces 13a, 13c, the inner plates 8a, 8c are the outer plates 7a, 7c of the side wall concerned and the inner plates 8b, 8d of the adjacent side walls b, d. and the fastening pieces 12b, 18d, and are held in an overlapping state with the outer plates 7a, 7c.

In addition, the lid body 2 includes folded connecting pieces 26e, 26f, 2 which are folded over the main plate portion 25, similar to the container 1 described above.
The side wall plates 27e, 27f, and 27g are made to stand up slightly inward from the periphery of the bottom plate 25 via 6g, and the inner side plate 28f is bent and overlapped with the side wall plate 27f, and the side wall plates 27e, 27g are placed between these two plates. The fixing piece 29 may be assembled by fixing the fixing piece 29 to the main plate portion 25 by heat-sealing means or the like in the same manner as described above while sandwiching the folding connecting pieces 30e and 30g connected to the folding connecting pieces 27g.

The box A of the present invention configured as described above is used for storing and packaging disk-shaped articles such as floppy disks and video disks, and other articles that require relatively cushioning properties. 1, and the lid body 2 connected via the connecting plate 23 is fitted and attached to the storage part 6. Items can be safely protected.

[Effects of the invention] As mentioned above, the box of the present invention is made of a sheet of slightly flexible synthetic resin, so it has excellent cushioning and protection effects for the stored items, and moreover, the box of the present invention has excellent cushioning and protection effects on the four sides of the storage compartment and the peripheral edge of the bottom plate. Furthermore, the periphery of the lid is also reinforced with a double structure, so that only one opposite side wall of the container is fixed to the bottom plate, and only one side wall of the lid is fixed to the main plate. Regardless, the side walls of the storage compartment and the box as a whole have sufficient shape-retaining strength even without the use of other reinforcing materials, and the slightly flexible material has the characteristic toughness, so there is no risk of breakage at bent parts. The lid can be fitted into the side wall of the storage part of the container, and can be used very suitably as a box that can be opened and closed like a book, and the storage and packaging conditions are also good. Furthermore, the box of the present invention is made of a simple sheet and can be assembled by simply attaching one opposite side wall of the container and one side wall of the lid, so it has a relatively simple structure and can be manufactured by heat-sealing, gluing, etc. There are few fastening parts, so it can be easily produced and provided at low cost without much effort.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention before assembly; FIGS. 2 and 3 are perspective views of the assembly process;
FIG. 4 is a perspective view of the assembled state, FIG. 5 is a partially enlarged perspective view, and FIG. 6 is a sectional view taken along the line shown in FIG. 4. a... Box, 19... Container, 2... Lid, 3...
Bottom plate, 4a, 4b, 4c...Folded edge plate, 6...
Storage part, 7a, 7b, 7c, 7d...outer plate, 8
a, 8b, 8c, 8d...inner plate, 12b, 17
d, 18d...Fixing piece, 13a, 13c, 21c
...Folding connecting piece, 23...Connecting plate, 25...Main plate part, 26e, 26f, 26g...Folding edge plate,
27e, 27f, 27g...Side wall plate, 28f...
Inner plate, 29...Fixing piece, 30e, 30g...Folding connecting piece.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Consisting of a container and a lid that are connected to each other using a sheet of slightly flexible synthetic resin. A folded edge plate that is folded back and overlaps the peripheral edge of the bottom plate is connected to the edge, and each folded edge plate is bent and stands up at a slightly inward position of the bottom plate peripheral edge so as to form side walls on three sides of the storage compartment. The outer plate and the inner plate bent and superimposed thereon are successively coupled, and the fastening piece coupled to the inner plate of the side wall facing the connecting side edge with the lid body is attached to the bottom plate when the side wall is in an upright state. A folding connecting piece that is fastened and connected to the ends of the inner and/or outer plates of both side walls adjacent to this side wall is inserted between the inner and outer plates of the side wall, and furthermore, The inner and outer plates formed to form the side walls connected to the lid body are fixed to the side edges of the bottom plate in an upright state by fixing pieces connected to both edges of the inner and outer plates. A folded connecting piece connected to the ends of the inner and/or outer plates of the adjacent side walls is inserted between the inner and outer plates of the side walls, and the main plate of the lid is connected to the remaining part of the bottom plate. It is bendably connected to one side edge via a connecting plate having approximately the same width as the height of the side wall, and each side edge of the main plate except the connecting side edge with the container is provided with folded edge plates. A side wall plate is connected to the main plate portion by bending and standing at a position slightly inward of the peripheral edge, and an inner side plate that is bent and overlaps with the side wall plate facing the side connected to the container is connected to the main plate portion. This inner plate is fixed by a fastening piece connected to the side edge thereof, and a folding connecting piece connected to the ends of the adjacent side wall plates connects the inner plate and the side wall. The box is sandwiched between the box and the plate, and the box is configured such that the lid body can be fitted onto a side wall of the storage section of the container. 2 A sheet of slightly flexible synthetic resin is made of styrene.
The box according to claim 1, which is a utility model, and is made of a foamed sheet of a synthetic resin that is slightly more flexible than polystyrene resin, such as ethylene copolymer, ethylene-vinyl acetate copolymer, or other polystyrene resin.