JP4505622B2 - Sheet container - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a sheet-like structure that can be used, for example, for containers such as trays, furniture, building structures, and the like, and that continuously changes from a flat surface to a three-dimensional surface by folding along a crease.
[0002]
[Prior art]
There are many examples in the world that use planar objects in three dimensions. Paper trays and boxes, clothing, furniture, and so on are all examples.
By the way, most of the objects that have been used in the form of these three-dimensional objects have been conventionally accompanied by gluing and sewing together with a bending process or a plastic deformation process such as a press process.
[0003]
[Problems to be solved by the invention]
However, if such a process is performed and the planar object is three-dimensionalized, it cannot basically be restored to the original planar object. Therefore, for example, it is often impossible to carry and store in a flat state that is three-dimensional only during use and is not bulky before and after use.
For example, paper trays, which are one of such objects, have heretofore been almost circular or elliptical shapes in which planar paper is formed into a three-dimensional shape by pressing or the like.
In addition, for example, even if a plane is simply creased to form a three-dimensional image, in this case, it is usually necessary to sequentially fold a plurality of places and form the image in steps, which is troublesome.
Furthermore, as far as the conventional paper plate is concerned, it has the following problems. In other words, at a standing party, people move and talk while holding a paper plate with food, a glass with a drink, and chopsticks (or a fork, etc.) at the same time. There is a need to. However, if the conventional paper plate as described above is used in such a case, one hand is blocked only by the paper plate on which the dish is placed. For example, even if the chopsticks are placed on the paper plate, at least the glass Must hold it with the other hand. Therefore, if you are going to eat a dish of paper, the glass must be placed on the table. As described above, the conventional paper plate is very inconvenient for use at a buffet party.
The present invention has been made in view of the above circumstances, and a first object thereof is a sheet-like structure that can be continuously changed from a flat surface to a solid body with one action, and a tray that is an application thereof. Etc. is to provide. Furthermore, when the sheet-like structure is embodied as a tray, a second object is to enable easy holding with one hand together with a glass or the like.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a sheet-like container that changes from a plane to a three-dimensional shape by folding along a crease,
Facing each other, two of the first fold substantially arcuate in curved inwardly, facing each other in a direction perpendicular to their first fold, curving inwardly two substantially arcuate second Folds are formed,
The first fold line and the second fold line intersect with each other, and the ends at the intersected ends are connected to each other in a loop shape,
The distance between the narrowest part of the two first folds and the distance between the narrowest part of the two second folds are both dimensions that fit between the adult thumb and middle finger,
The first both sides outside the first fold of the structure are folded in the same direction along the first fold, and accordingly, the second ends on the outside of the second fold. In the sheet-like container in which the first fold and the second fold are creased so as to rise in the same direction as the first both ends along the second fold,
A third crease is formed on the second both ends by rimming the edge and forming an inwardly convex shape at the central portion thereof.
When the second end portions rise along the second fold, the edge portions of the second end portions are folded back along the third fold in the direction opposite to the second fold. As described above, it is configured as a sheet-like container formed with a crease of the third fold .
[0005]
With such a configuration, when the sheet-like structure is changed from a flat surface to a solid body, for example, the first both ends are valley-folded along the first fold and the first both ends are formed. When the is raised, the second end portions naturally rise in the same direction in conjunction with it. That is, the above-mentioned sheet-like structure is formed by continuously holding the first both ends with, for example, one hand, the four sides rising in the same direction, and the flat surface continuously forming a three-dimensional shape. Handling is extremely easy due to its shape. In addition, when the sheet-like structure is formed in a size that can be held with one hand as a tray such as a paper plate, if a can or glass is placed along the curved surface formed on one side of the first both ends, the glass and the like It can be easily and stably held with one hand. Furthermore, since it is completely flat when not in use (unbent), it does not take up space during storage or carrying, and is easy to handle.
[0006]
In addition, a third crease that borders the edge is formed at each of the second end portions, and when the second end portions rise along the second crease, the second end portions are further formed. If the edge part of the second part is folded back in the direction opposite to the second fold line along the third fold line, sufficient strength is secured at the edge parts of the second end parts not held by fingers or the like, for example. .
Here, in order to make the second end portions easy to stand up and have a smooth curved surface, the third fold is formed in an inwardly convex shape at the central portion in the same manner as the second fold. It is desirable.
[0007]
Further, a substantially semicircular fourth fold is formed at each of the first both ends, and when the first both ends are folded along the first fold, the fourth fold is further formed. If the sheet-like structure is used as a tray, for example, when the sheet-like structure is used as a tray, the bent portion can be used as, for example, a chopstick rest.
In addition, if the first fold is formed so as to be orthogonal to the direction of the fibers of the material (for example, paper) constituting the sheet-like structure, the first fold can be easily folded accurately, and the first fold can be easily folded. Since the bending reaction force at both end portions of 1 is large, the holding of the sheet-like structure is more stable, and the holding of the glass or the like simultaneously held when used as a tray is more stable.
[0008]
In addition, if the sheet-like structure is formed in a substantially bowl shape in a planar state, and the ends of the first and second folds are connected to each other in a loop shape, each surface and its peripheral portion are smooth in use. It draws simple curves and curved surfaces and is not only excellent in handling functions but also beautiful in appearance.
Further, by connecting the ends of the first and second folds in a loop shape as described above, the first folds are folded when the first both ends are folded along the first folds. Since the bending force generated along the direction is smoothly released in the direction of the second fold, it is possible to prevent formation of a fold reaching the edge of the sheet-like structure in the extending direction of the first fold. As a result, the bending reaction force at the first both ends can be further increased, the holding of the sheet-like structure is more stable, and the holding of the glass or the like simultaneously held when used as a tray is also more stable. To do.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. It should be noted that the following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
Here, FIG. 1 is a plan view of a paper plate 1 according to the present invention, FIG. 2 is a side view and a front view of the paper plate 1 corresponding to FIGS. 3 (a) and 3 (b), and FIG. FIG. 4 is a diagram showing a state change when holding the paper with one hand, FIG. 4 is a diagram showing a state in which the can is held simultaneously with the paper plate 1 with one hand, and FIG. 5 is a glass with the paper plate 1 simultaneously with one hand. FIG. 6 is a diagram showing a state in which the folds 5a and 5b are folded into a chopstick rest, and FIG. 7 is an explanatory diagram of the effect of loop connection between the folds 2a and 2b and the folds 3a and 3b. It is.
[0010]
A paper plate 1 (an example of a tray formed of a sheet-like structure) according to the present embodiment is formed of a substantially bowl-shaped flat paper piece as shown in FIG.
The paper used for the paper plate 1 has a thickness and stiffness sufficient to withstand use as a paper plate on which food is placed, and it is desirable that the surface is coated with a coating for increasing water resistance. Of course, the material is not limited to paper, and resin such as plastic, metal, wood, or a combination thereof can be used.
[0011]
The paper plate 1 is formed with four types of folds 2a, 2b,..., 5a, 5b as shown in FIG.
The folds 2a and 2b (corresponding to the first crease) are substantially circles facing each other so as to be along the end portions 10a and 10b (corresponding to the first both end portions) corresponding to the bowl-shaped constriction portion of the paper plate 1, respectively. It is formed in an arc shape. The folds 3a and 3b (corresponding to the second fold) are formed in a substantially arc shape facing each other in a direction perpendicular to the folds 2a and 2b. Further, the creases 2a, 2b and the creases 3a, 3b are adjacent to each other, and the ends of the intersected ends are connected in a loop. That is, the folds 2a, 3a, 2b, 3b are connected to each other to form one endless fold.
[0012]
The fold lines 4a and 4b (corresponding to the third fold line) are edged so as to border the end portions 11a and 11b (corresponding to the second end portions) corresponding to the bowl-shaped protruding portion of the paper plate 1. The part is formed to be slightly convex inward.
The folds 5a and 5b (corresponding to the fourth fold) are formed in substantially semicircular shapes at the end portions 10a and 10b (outside the folds 2a and 2b), respectively.
In actual use, the folds 2a, 2b, 3a and 3b are valley-folded, the folds 4a and 4b are mountain-folded, and the folds 5a and 5b are mountain-folded as necessary. . Therefore, it is desirable that the folds are slightly brazed in advance before use.
[0013]
When using the paper plate 1 as described above, as shown in FIGS. 3 (a) and 3 (b), the both ends 10a and 10b of the paper plate 1 are folded along the folds 2a and 2b with one hand. Then, the both end portions 10a and 10b are raised. Then, the both end portions 11a and 11b continuously rise in the same direction as the both end portions 10a and 10b in conjunction with the folds 3a and 3b due to the arc shape structure of the folds 2a and 2b (see the side view and the side view shown in FIG. 2). (See front view). That is, when a force is applied in one direction, the planar paper piece continuously changes to a three-dimensional shape (tray shape). At this time, since the folds 3a and 3b are valley-folded and the folds 4a and 4b are fold-folded, both end portions 11a and 11b form a smooth curved surface shape slightly inwardly curved along these two types of fold lines. .
[0014]
In this way, the paper plate 1 can be used as a paper plate by simply holding the both ends 10a and 10b with one hand, so that the four surfaces rise in the same direction and continuously change from a planar shape to a three-dimensional shape. The shape can withstand. Further, when both end portions 10a and 10b of the paper plate 1 are bent along the folds 2a and 2b, a reaction force is generated at the both end portions 10a and 10b to return to the original state. Holds firmly so that it sticks to the hand holding it. Furthermore, since the edge portions of the both end portions 11a and 11b are mountain-folded along the fold lines 4a and 4b, sufficient strength is also secured to the edge portions of the both end portions 11a and 11b that are not held by fingers. In addition, since the overall shape is substantially bowl-shaped, the peripheral edge draws a smooth curve in use, which is not only excellent in terms of handling functions but also beautiful in appearance. Furthermore, since the creases 2a, 2b and the creases 3a, 3b are connected to each other in a loop shape, the folds 2a, 2b are bent when the both ends 10a, 10b are folded along the creases 2a, 2b. The bending force generated along the line is smoothly released in the direction of the folds 3a and 3b, and a crease reaching the edge as shown by a broken line in FIG. 7 is prevented in the extending direction of the folds 2a and 2b. it can. Thereby, the bending reaction force of the said both ends 10a and 10b can be enlarged more, and the holding | maintenance of the said paper plate 1 is stabilized more.
[0015]
Further, as shown in FIGS. 4 and 5, with the paper plate 1 held with one hand as described above, for example, if a can or glass is placed along the curved surface formed by the end portion 10a and the fold 2a, It is easy to hold the pan 1 and the cans, glasses, etc. at the same time. At this time, since the reaction force from the end portion 10a of the paper plate 1 acts on the can, glass, etc. held together with the paper plate 1, the can or glass is firmly held between the end portion 10a and the fingers. , Can be held stably with one hand.
[0016]
In addition, the paper plate 1 is held with one hand (except when the glass is held at the same time), or the paper plate 1 is brazed to some extent in that state and placed on a table, for example. If the folds 5a and 5b are folded in a mountain, the bent portion can be used as a chopstick rest as shown in FIG.
[0017]
As described above, the paper plate 1 according to the present embodiment can be easily and stably held with one hand together with a glass or the like. In addition, it is very easy to handle because it changes continuously from a planar shape to a three-dimensional shape simply by grasping the both end portions 10a, 10b with one hand and can withstand the use as a paper plate. Furthermore, since the edge portions of the both end portions 11a and 11b are mountain-folded along the fold lines 4a and 4b, sufficient strength is also secured to the edge portions of the both end portions 11a and 11b that are not held by fingers. Furthermore, since the creases 2a, 2b and the creases 3a, 3b are connected to each other in a loop shape, the folds 2a, 2b are bent when the both ends 10a, 10b are folded along the creases 2a, 2b. The bending force generated along the line is smoothly released in the direction of the folds 3a and 3b, and a crease reaching the edge as shown by a broken line in FIG. 7 is prevented in the extending direction of the folds 2a and 2b. it can. Thereby, the bending reaction force of the said both ends 10a and 10b can be enlarged more, and the holding | maintenance of the said paper plate 1 is stabilized more. Further, if the folds 5a and 5b are folded in a mountain, the bent portion can be used as a chopstick rest as shown in FIG.
In addition, since it is completely flat when not in use (unfolded), it does not take up space during storage or carrying and is easy to handle.
[0018]
【Example】
In the paper plate 1, the folds 2a and 2b are easily foldable as accurately as possible, the generated force that leads to a series of movements that change from a flat surface to a solid is increased, and the bending reaction force is increased so In order to enhance the stability when held, it is desirable to form the folds 2a and 2b in a direction perpendicular to the fibers of the paper.
In the above embodiment, the sheet-like structure according to the present invention is embodied as a paper plate. However, the sheet-like structure is continuously formed from a planar shape to a three-dimensional shape by the above-described configuration. Since it can be changed, it can be applied to various fields such as furniture such as chairs and architectural structures using this property.
[0019]
【The invention's effect】
As described above, the present invention is a sheet-like structure that continuously changes from a plane to a three-dimensional shape by bending along a crease, and two substantially arc-shaped first folds facing each other, Two substantially arc-shaped second folds facing each other in a direction perpendicular to the first folds are formed, and the first both sides outside the first fold of the structure are connected to the first folds. By folding in the same direction along the first fold, the second end portions outside the second fold are also raised in the same direction as the first both ends along the second fold. Because it is configured as a sheet-like structure characterized in that the four sides are naturally raised in the same direction and are flat when the first both ends are grasped with one hand, for example. Is a continuous three-dimensional shape, for example If it becomes a shape that can withstand applications such as trays, the handling is very easy. In addition, when the sheet-like structure is formed in a size that can be held with one hand as a tray such as a paper plate, if a can or glass is placed along the curved surface formed on one side of the first both ends, the glass and the like It can be easily and stably held with one hand. Furthermore, since it is completely flat when not in use (unbent), it does not take up space during storage or carrying, and is easy to handle.
[0020]
In addition, a third crease that borders the edge is formed at each of the second end portions, and when the second end portions rise along the second crease, the second end portions are further formed. If the edges of the second fold back along the third fold in the direction opposite to the second fold, for example, the edges of the second ends that are not held by fingers or the like can have sufficient strength. .
Here, in order to make the second end portions easy to stand up and have a smooth curved surface, the third fold is formed in an inwardly convex shape at the central portion in the same manner as the second fold. It is desirable.
[0021]
Further, a substantially semicircular fourth fold is formed at each of the first both ends, and when the first both ends are folded along the first fold, the fourth fold is further formed. If the sheet-like structure is used as a tray, for example, when the sheet-like structure is used as a tray, the bent portion can be used as, for example, a chopstick rest.
In addition, if the first fold is formed so as to be orthogonal to the direction of the fibers of the material (for example, paper) constituting the sheet-like structure, the first fold can be easily folded accurately, and the first fold can be easily folded. Since the bending reaction force at both end portions of 1 is large, the holding of the sheet-like structure is more stable, and the holding of the glass or the like simultaneously held when used as a tray is more stable.
[0022]
In addition, if the sheet-like structure is formed in a substantially bowl shape in a planar state, and the ends of the first and second folds are connected to each other in a loop shape, each surface and its peripheral portion are smooth in use. It draws simple curves and curved surfaces and is not only excellent in handling functions but also beautiful in appearance.
Further, by connecting the ends of the first and second folds in a loop shape as described above, the first folds are folded when the first both ends are folded along the first folds. Since the bending force generated along the direction is smoothly released in the direction of the second fold, it is possible to prevent formation of a fold reaching the edge of the sheet-like structure in the extending direction of the first fold. As a result, the bending reaction force at the first both ends can be further increased, the holding of the sheet-like structure is more stable, and the holding of the glass or the like simultaneously held when used as a tray is also more stable. To do.
[Brief description of the drawings]
FIG. 1 is a plan view of a paper plate 1 according to the present invention.
FIGS. 2A and 2B are a side view and a front view of the paper plate 1 corresponding to FIGS.
FIG. 3 is a view showing a change in form when the paper plate 1 is held with one hand in two stages.
FIG. 4 is a view showing a state where a can is held simultaneously with the paper plate 1 with one hand.
FIG. 5 is a view showing a state in which a glass is held simultaneously with the paper plate 1 with one hand.
FIG. 6 is a diagram showing a state in which the fold lines 5a and 5b are folded into a chopstick rest.
FIG. 7 is an explanatory diagram of the effect of the loop connection between the fold lines 2a and 2b and the fold lines 3a and 3b.
[Explanation of symbols]
1 ... paper plates 2a, 2b ... fold (corresponding to the first fold)
3a, 3b ... fold (corresponding to the second fold)
4a, 4b ... fold (corresponding to the third fold)
5a, 5b ... fold (corresponding to the fourth fold)
10a, 10b ... both ends (corresponding to the first ends)
11a, 11b ... both ends (corresponding to the second ends)

Claims (4)

A sheet-like container that changes from a flat surface to a three-dimensional shape by folding along a crease,
Facing each other, two of the first fold substantially arcuate in curved inwardly, facing each other in a direction perpendicular to their first fold, curving inwardly two substantially arcuate second Folds are formed,
The first fold line and the second fold line intersect with each other, and the ends at the intersected ends are connected to each other in a loop shape,
The distance between the narrowest part of the two first folds and the distance between the narrowest part of the two second folds are both dimensions that fit between the adult thumb and middle finger,
The first both sides outside the first fold of the structure are folded in the same direction along the first fold, and accordingly, the second ends on the outside of the second fold. In the sheet-like container in which the first fold and the second fold are creased so as to rise in the same direction as the first both ends along the second fold,
A third crease is formed on the second both ends by rimming the edge and forming an inwardly convex shape at the central portion thereof.
When the second end portions rise along the second fold, the edge portions of the second end portions are folded back along the third fold in the direction opposite to the second fold. A sheet-like container having a crease in the third fold. A substantially semicircular fourth fold is formed at each of the first end portions,
The first and second end portions are bent along the first fold line, and can be further folded back along the fourth fold line in a direction opposite to the first fold line. The sheet-like container according to 1.   The sheet-like container according to claim 1 or 2, wherein the first fold is formed so as to be substantially orthogonal to the direction of the fibers of the sheet-like structure.   The sheet container according to any one of claims 1 to 3, wherein the sheet container is formed in a substantially bowl shape in a planar state.

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