JP2003212229A - Developable container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a developable container whose contact portion with contents is limited to one face only of a sheet member, of which the operation of assembly and development is easy, which takes no large space when stored, and in which stress concentration at corner portions is avoided. <P>SOLUTION: The developable container formed by folding a sheet-like member has a rectangular bottom face. Portions extending from the respective sides partitioning the bottom face are raised as side walls. Each portion between the adjacent side walls is folded outward at each corner, or at each part near the corner, of the bottom face as an apex to form a rectangular box. Each folded-out portion is further folded down to the side of the side wall of the box, and holding members are provided which are engaged with the folded-out portions folded down to control a repulsive force of and the flapping of each folded-out portion and which hold positions where the folded-out portions are folded down. By deviating the apex of fold lines partitioning each folded-out portion from a position of each corner portion of fold lines partitioning the bottom face, it is designed so that stress is not concentrated to each corner portion of the container. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deployable container formed by folding a sheet-like member, and in particular, it is free and easy to assemble and deploy, has excellent durability and waterproof properties, and can be used with any liquid solid. Without being concerned with a deployable container that can be stored.

[0002]

2. Description of the Related Art Conventionally, it has been practiced to bend a corner of a sheet-shaped member and use it as a container. 31 and 32 are views showing the structure of such a conventional container. In the container shown in FIG. 32, the four corners 101a of the sheet-like member 101 are folded inside the container to form a box body, and the blade portions 102 are provided on the upper end portions of the side walls of the box body which face each other.
The blades 102 are folded inward along the shape of the box to cover the folded portions 101a at the four corners, and the repulsion of the folded portions 101a is suppressed so that the container can be used as a container.

The container shown in FIG. 31 is an example in which the four corners 111a of the sheet-like member 111 are bent outward to form a box. In this example, the protruding portions 111a at the four corners are tilted toward the outer wall 112 of the box and fixed with an adhesive or the like.

[0004]

However, these conventional deployable containers have the following drawbacks. First, the four corners 101a of the sheet-shaped member as shown in FIG.
In the container configured to be folded inward and covered with the blade portion 102, the contents stored in the container will contact the entire blade portion. Therefore, when food or the like is stored, dirt adheres to the entire blade 102, and since the blade 102 is folded inward, both sides of the sheet-like member 101 become dirty when the box is unfolded. Become. In this way, in the conventional container, the area where dirt adheres becomes large,
Moreover, since dirt is attached to both surfaces, there is a problem that it is difficult to handle when the container is repeatedly used. Further, when the liquid is stored, the liquid enters between the blade portion 102 and the box body or between the folding portion 101a, so that the area where the dirt adheres becomes large and there is also a problem that cleaning and the like are troublesome. Further, since the area of the blade portion 102 is large, the area of the entire container when expanded is large, which makes it inconvenient to store the container when not in use and also reduces the manufacturing efficiency. In addition, when a dirty container is unfolded, the dirty surface must be touched, which is uncomfortable and inconvenient.

On the other hand, as shown in FIG. 31, a box whose four corners are bent outward is also conventionally used. However, the part 111a which is bent outward is attached to the outer wall 112 of the box with an adhesive. Therefore, the stored items enter the inside of the folded-out portion 111a, and dirt is accumulated there. In addition, since assembly and deployment are not easy, there is a problem that it is difficult to reuse when the corner of the container becomes dirty.

Further, in the conventional expandable container, when the folding part (folding part) is folded (folded), the folds are concentrated at the four corners of the bottom surface of the box body, so that this corner is formed. There is also a problem that it becomes weak and the corners are damaged after being used several times.

[0007]

The present invention has been made in order to solve these problems, and the contact portion between the stored item and the container is only one side of the sheet member, and the container is expanded after use. An object of the present invention is to provide a deployable container that is thin and can be stored without being bulky, is easy to handle, is easy to assemble and deploy, and can avoid stress concentration at corners. And

In order to solve the above-mentioned problems, the deployable container of the present invention is a deployable container formed by folding a sheet-shaped member, wherein the container has a rectangular bottom surface, and each side defining the bottom surface The extending part is raised as a side wall, and the part between the adjacent side walls is outwardly bent at the corner of the bottom surface or near the corner as an apex to form a rectangular box body, and the bent part is further formed into the box. While folding down to the side wall of the body,
It is characterized in that it is provided with a holding member which engages with the folded-out portion and suppresses the repulsive force and rotation thereof and holds the folded-up position of the folded-out portion.

With such a configuration, the contact portion between the stored item and the container is only one surface (inner surface) of the sheet-shaped member when the container is expanded, and handling during expansion such as cleaning and storage. Will be easier. Further, the container can be assembled by only the operation of folding the sheet member and engaging the holding member with the folding portion to engage the restraining piece bent outwardly with the folding portion. The assembled container can be easily deployed only by releasing it.

Further, in the deployable container according to the present invention, the fold-out portion has a first fold line along a side portion of a side wall (first side wall) on which the fold-out portion extends, and A second side along the side of the side wall (second side wall) connected to the first side wall.
And a third fold line extending in an oblique direction between the first fold line and the second fold line, and the apex of the fold-out portion is at least the first fold line. It is characterized in that it is located at a position displaced from the apex of the corner of the bottom surface toward the inside of the container in the extending direction of the fold line 2.

With this configuration, the fold line of the fold-out portion and the fold line that defines the bottom surface of the container are not concentrated at one place, so stress concentration at the corners is relaxed and the container can be used for a long period of time. It will be possible.
In addition, since the repulsive force of the folded portion that is tilted toward the side wall can be suppressed to a small level, the stability of the container also increases. In addition, the line width of the folding line is equal to the material thickness of the sheet-shaped member,
Alternatively, when the material is wider than the material thickness, or when it is a flexible material and easily absorbs stress, even if the position of the apex of the fold-out portion is located in line with the extending direction of the first fold line, The container can be easily assembled. Moreover, it is sufficient that the apex of the folding portion is displaced from the extending direction of the second folding line. Depending on the material of the sheet-shaped member, the second folding line may be inclined in the vicinity of the apex of the folding portion, and The second polygonal line may be connected to the vertex.

In the container of the present invention, all of the folded portions may be tilted in the same direction, or adjacent folded portions may be tilted in the opposite direction.

In the container of the present invention, the holding member is a restraining piece provided on the upper end portion of the side wall, and the restraining piece is bent to the outside of the box and engaged with the bent portion. It is preferable to hold the position of the protruding portion. With a very simple structure, the box can be assembled and easy to deploy.

In this case, the restraining piece has an engaging piece, and the engaging piece is sandwiched between the folded-out portion and the outer surface of the side wall extending from the folded-out portion, and the folded-out portion is held. And the restraining piece are preferably engaged with each other. Alternatively, the restraining piece may have an engaging hole, and the bent portion may be inserted into the engaging hole so that the bent portion and the restraining piece are engaged with each other. Further, an engaging portion for engaging the restraining piece is provided on the outer surface of the side wall of the container, the restraining piece is engaged with the engaging portion, and the folding portion is provided between the restraining piece and the outer surface of the side wall of the container. It is also possible to sandwich it between and to engage the protruding portion with the restraining piece.

Further, the container of the present invention is a frame body in which the holding member is provided with a groove that fits into the upper end portion of the box body, and the upper end of the bent portion is fitted into the groove of the frame body. It is also possible to hold the position of the protruding portion.

In this case, further, an engagement portion for engaging the box body and the frame body with each other is provided around at least upper ends of the side walls of the container facing each other, and the frame body is hinged on both sides of the engagement portion. It is preferable that the light can be diffracted through.
With this configuration, the frame body can be opened upward with the engaging portion as the center, and the folded portion folded on the side wall of the box can be easily deployed. Also, when assembling
First, by engaging the frame body with the two side walls provided with the engaging portions, the two side walls stand up, and it becomes easy to fold the bent portion and diffract the frame body to assemble.

Further, the frame body may be constituted by a separate member for each side of the box body. Here, the member forming the frame body is composed of two portions diffractably connected via a hinge portion, and the hinge portion corresponds to the length of the upper end of the folding portion from one end portion. It is preferably formed in a position. By diffracting the frame member corresponding to the upper end of the folding portion upward through the hinge, the engagement between the folding portion and the frame body is released, and only the folding portion is expanded to store the contents of the container. It is possible to take it out.

Further, one of the two parts constituting the frame member may be slidable with respect to the upper end of the box body. When this part is slid, the other part is diffracted to the upper side via the hinge part, so that only the folding part can be expanded. In addition, a stopper for limiting the sliding operation may be provided on the sliding portion. A lid that fits into this frame may be provided.

As a further modified example of the deployable container of the present invention, the upper end of the second side wall, the second fold line, and the third fold line
The upper end of the triangular portion defined by the fold line and the upper end portion of the triangular portion can be bent outward, and when the container is assembled, the upper end of the triangular portion extends. The existing portion may be configured to be folded together with the projecting portion, and the extended portion of the second folding line in the extending portion and the vicinity thereof may be thinly stretched.

In this way, when the container is assembled, the side wall (second side wall) on the side where the folded portion of the container is not folded has a double structure, so that the strength of the box is improved. To do. In this case, the portion of the second side wall bent from the upper end to the outer side detours the outermost side when the folded portion is folded, so that a strong repulsive force is generated in this portion. Here, by thinly extending the extended portion of the second folding line and the vicinity thereof, it becomes possible to obtain a length required for this detour in the folded portion, and the folded portion can be folded without difficulty. .

As a further modification, the holding member is a member having an L-shaped cross section provided on the outer wall of the box body, and the L-shaped member is locked at the upper end to the upper end portion of the box body. It is also possible to have a locking portion, and by locking the locking portion to the upper end of the box body, the folding position of the folding portion can be held.

A further embodiment of the present invention is characterized in that the restraining piece comprises a fourth fold line extending in the extending direction of the first side wall. The fourth fold line preferably has a shape that detours toward the upper edge of the container.

In this way, by providing the folding line on the restraining piece, it is possible to prevent the tip of the restraining piece from protruding outward when the container is assembled. In addition, by diverting this fold line toward the upper edge of the container,
Since the tip of the restraining piece bends inward according to the shape of the fold line,
It is possible to more suitably prevent the tip of the restraining piece from protruding outward.

Furthermore, in another embodiment of the present invention,
A sixth fold line is formed in the same direction as the fifth fold line near the outside of the fold line (fifth fold line) that defines the second side wall and the container bottom surface.
Fold line is provided, and the sixth fold line is closest to the fifth fold line in the vicinity of the central portion of the second side wall, and the fifth fold line becomes closer to the end side of the second side wall. It is characterized in that it is provided away from the line.

According to this structure, the second side wall of the deployable container can be easily folded upward, and the fifth fold line can be formed at the central portion of the second side wall. To the end side of the second side wall, and away from the fourth fold line,
That is, by forming the second side wall in a concave shape facing inward, the bulge from the lower end to the upper end generated in the second side wall when the container is assembled can be corrected.

Further, in another embodiment of the present invention,
A sixth fold line is provided in the vicinity of the outside of the first fold line substantially parallel to the first fold line, and a repulsive force absorption band is formed between the first fold line and the sixth fold line. It is characterized by having done.

As described above, the sixth folding line is provided in the vicinity of the second folding line, and the repulsive force absorption zone is formed between these folding lines, so that the first folding line can be folded down. It is possible to absorb the stress generated in the folding line and prevent the folded-back portion from bending back.

Furthermore, in another embodiment of the present invention,
A seventh fold line is provided in the vicinity of the outside of the second fold line substantially parallel to the second fold line, and a strain absorption band is formed between the second fold line and the seventh fold line. It is characterized by

As described above, the seventh folding line is provided in the vicinity of the second folding line substantially in parallel with the second folding line, and a strain absorbing band is provided between these folding lines to form the folded portion. The deformation of the container can be suppressed by replacing and absorbing the distortion of the side wall of the expansion container caused by folding the deformation in the strain absorption band.

Further, in the deployable container of the present invention, the container is provided with a lid member, and the lid member is provided with a locking claw, and
An engaging hole that engages with the locking claw is provided at the upper end of the first side wall in a state where the lid member is closed so that the position of the side wall of the container can be fixed by the locking claw and the engaging hole. It is characterized by having done.

With this configuration, even if the engagement between the restraining piece and the folding portion is accidentally disengaged, the first side wall is engaged with the lid member, so that the lid member can be removed. Unless the side wall falls over, the function as a box can be maintained.

Further, the deployable container according to the present invention is characterized in that it comprises a restraining piece in which the holding member extends from the first side wall and an adhesive means for fixing the restraining piece to the side wall of the container. To do.

In this container, it is preferable that the restraining piece is bent and an eave portion extending outward is provided at the upper end of the first side wall.

According to this structure, by sealing the film on the eaves portion, the film can be suitably used for a one-way container such as a retort product. By providing the eaves, it becomes possible to use a jig for sealing, and productivity is improved.

The container of the present invention is preferably made of a waterproof material.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the expandable container of the present invention will be described in detail below with reference to the drawings. 1 to 4 are views showing the configuration of a first embodiment of the expandable container of the present invention, FIG. 1 is a perspective view showing a half-opened state of the container, and FIG. FIG. 3 is a diagram showing a state in which the container is taken out and folded down toward the side wall of the container, FIG. 3 is a diagram showing an engagement state between the restraining piece and the folding portion, and FIG. 4 is a diagram showing a state in which the container is assembled.

As shown in FIG. 1, the container 1 of the first embodiment.
Defines a quadrangular bottom surface 11 on a sheet-like member, and forms a box body 10 by raising side walls 13 from each side 12 of the bottom surface 11. The surplus portions (four corners of the sheet member) between the adjacent side walls 13 are bent in a triangle shape toward the outside,
Further, the restraining pieces 15 are provided on the upper ends of the side walls 13a facing each other. The restraining piece 15 has insertion hooks 15a on both sides.

At the time of assembling the container 1, as shown in FIG.
The adjacent bent-out portions 14 and 14 are made to face the side wall 13a on the side where the restraining piece 15 is provided and tilted so that the bent-out portions 14 and 14 extend along the side wall 13a. Further, as shown in FIG. 3, the restraining piece 15 is bent outward at the upper end of the side wall 13a and is tilted toward the side wall 13a.
4 and the side wall 13a, the hook 15a is inserted so that the position of the protruding portion 14 is maintained. As shown in FIG. 4, the four side walls of the box are fixed by the engagement of the bent portions 14, 14 and the restraining piece 15, and the box functions as a container.

As the material of the container 1, for example, paper or plastic can be preferably used. When paper is used, it is preferable that the surface of the paper is laminated so as to have a waterproof function. The container of the present invention can be manufactured by folding the sheet-shaped member, and therefore can be easily manufactured by simply cutting the sheet-shaped member according to the mold. Further, in the container of the present invention, since both the projecting portion 14 and the restraining piece 15 are folded to the outside of the container, there is no portion where the sheet members overlap inside the container, and the range where dirt adheres is reduced. be able to. Further, even when liquid or the like is stored, the liquid does not easily exude due to the overlapping of the sheet portions. It is conceivable that the liquid will seep out inside the fold-out portion 11, but even in this case, when the container is expanded, the content adheres to only one surface of the sheet member, and therefore the container is washed and re-used. Easy to handle when using.

Further, the blade portion 1 of the conventional container shown in FIG.
As compared with No. 02, the area of the restraining piece 15 for holding the position of the folding portion 14 can be made smaller, so that there is less storage space when the container is expanded and stored, and there is less space. The material can be used to make a container.

FIG. 3 shows a procedure for engaging the restraining piece 15 and the protruding portion 14. First, the restraining piece 15 is bent outward at the upper end of the side wall 13a (see FIG.
(A)) Then, the fold-out portions 14 and 14 are attached to the side wall 13
Face the a side and knock it down. Further, the center of the restraining piece 15 is pressed with a finger to suppress the rotation and repulsion of the bent portions 14, 14 on both sides (FIG. 3 (b)), and the hook 15a of the restraining piece 15 is bent by the other hand. 14 and the side wall 13a. As a result, the protruding portions 14, 14
Is suppressed and fixed along the side wall 13a.
By pulling the restraining pieces 15, 15 on both sides outward at the same time, the container 1 can be deployed by one-touch operation.

As shown in FIG. 5, it is possible to provide a box with a lid by using the container 1a having the same structure but having a slightly larger bottom surface 11 as a lid. In this case, it is convenient if the height of the side wall of the box used for the lid is made slightly lower than that of the box 1 used as the container body.

Alternatively, as shown in FIG. 6, the restraining piece 15
You may make it provide the tip part insertion type lid part 16 used for a normal candy box etc. at the upper end of the side wall 13b at the side where is not provided.

FIG. 7 is a developed view of the expandable container shown in FIG. 1. FIG. 7 (a) shows the fold line of the container when a thin sheet-like member is used, and FIG. 7 (b) is relatively thick. The fold line of a container when a sheet-like member is used is shown. In addition, in FIG. 7, the broken line is a fold line that folds toward the outside of the container, and the alternate long and short dash line is a fold line that folds toward the inside.

As shown in FIG. 7 (a), when a thin sheet-like member is used, folding lines 17 and 17 that define the folded portion 14 and the side wall 13, and folding lines that define the bottom surface 11 and the side wall 13. The (bottom side) 12 and the folding line 17a at the center of the projecting portion 14 are concentrated at the corner 18 of the container bottom. If the sheet-shaped member is thin, the repulsive force of the fold-out portion 14 when the container is assembled does not become so strong, so even if each folding line is concentrated at the corner 18, the fold-out portion 14 is tilted to the side wall 13a side. The position can be retained as it is.

On the other hand, when a relatively thick sheet-like member is used, the member is folded along the fold line as shown in FIG. 7B to assemble the container. That is, the side wall 13a (first side wall) on the side where the folding portion 14 is laid down and the folding line 17b that defines the folding portion 14 are provided on the other side wall 13b.
The fold line 1 that deviates slightly from the extension line of the fold line 12a that defines the (second side wall) and the bottom surface 11 and that defines the second side wall 13b and the folded portion 14.
7c is made to shift slightly outward from the extension line of the fold line 12b that defines the bottom surface 11 and the first side wall 13a.

When fold lines are provided as shown in FIG. 7B, fold lines 17b and 17c defining the fold-out portion 14 are formed.
And the fold lines 12a and 12b defining the bottom surface 11 of the container are discontinuous, and the fold lines are not concentrated on the corners 18 of the bottom surface 11. Therefore, it is possible to prevent a strong repulsive force from being generated when the projecting portion 14 is folded. Even if assembly and deployment are repeated many times, stress concentrates and corner 1
The problem that 8 is damaged is less likely to occur.

The deviation amount of the folding line will be described in detail with reference to FIG. In FIG. 8A, the broken line is shown in FIG.
Shows the state when there is no deviation as shown in (a),
The solid line shows the state in which the shift as shown in FIG. Deviation amount d1 between the folding line 17b and the folding line 12a
Is approximately equal to the thickness of the sheet member, or is an amount obtained by adding a slight margin to this thickness, and the folding line 17c
The deviation amount d2 of the folding line 12b is set to about 2 to 3 times the sheet thickness because it is necessary to cover the thickness of the side wall 13a and the folding portion 14. These deviations weaken the diffraction repulsive force of the fold-out portion 14, and stabilize the engagement state between the fold-out portion 14 and the restraining piece 15 when the container is assembled.

Although the rectangular container has been described above as an example, also in the case of a triangle or a polygon having a pentagon or more, similarly, the folding line on the side where the folding portion is tilted is changed from the original line to the sheet member. The fold-out portion 14 is made approximately equal to the thickness, or is displaced by an amount obtained by adding a slight margin to this thickness, and the other folding line is displaced from the original line by approximately 2 to 3 times the sheet thickness. Can be stably extended to the side wall 13 side.

FIG. 9 is a diagram showing the above-mentioned shift state viewed in different directions. FIG. 9A is a view of the folding portion 14 viewed from the extending direction of the side wall 13a on the side where the folding portion 14 is folded, and FIG. 9B is a view in which the folding portion 14 is folded to the side wall 13a side. FIG. 9C is a view of the above-mentioned state as viewed from above, and FIG. 9C is a view of the folded-out portion 14 viewed from a direction orthogonal to the side wall 13a. As can be seen from these figures, the bent-up portion 19 that absorbs the deviation of the discontinuous portion is formed at the corner of the bottom portion of the box body, and the bent portion 14 can be easily tilted to the side wall 13a side. Further, the corner portion 19 is less likely to be damaged. In the case of a material having a relatively strong repulsive force such as a plastic sheet, the bent-up portion 1 bent in a curved shape
At the same time that 9 is formed, the effective folding line of the folding line 12b is
Fold line 1 away from 12a near the intersection of fold line 1
Turn towards the intersection of 7a and 17b. In such a case, as shown in FIG. 19 (d), the fold line 12b is not formed so as to intersect with the fold line 12a in the vicinity of the corner 19 in advance, but is formed by bending toward the intersection of the fold lines 17a and 17b. By placing it, the repulsive force acting on the corners can be weakened.

10A and 10B are views showing another structure of the hook 15a of the restraining piece 15, FIG. 10A showing the container 1 in a half-opened state, FIG. 10B showing the assembled state, and FIG. 10C. Indicates the expanded state. In this example, the hook 15a is provided on the entire tip of the restraining piece 15, and after the restraining piece 15 is bent outward,
The hook 15a is further bent and inserted between the protruding portion 14 and the side wall 13a.

FIG. 11 is a diagram showing the construction of the second embodiment of the container according to the present invention. In the second embodiment, elongated holes 15b are provided on both sides of the restraining piece 15, and the tip a of the bent portion 14 is inserted into the elongated hole 15b so that the folded portion 14 and the restraining piece 15 are engaged with each other. In this case, as shown in FIG. 11B, the restraining piece 15 is first bent outward and brought into contact with the side wall 13a, and the protruding portion 14 is laid down thereon.

FIG. 12 is a diagram showing the structure of a third embodiment of the container according to the present invention. In this example, the side wall 1 of the container 1
The locking portion 20 is separately attached to 3a, the locking piece 15c is provided at the tip of the restraining piece 15, and the locking piece 15c is inserted into the locking portion 20 and stopped. In this case, the width of the restraining piece 15 is set to a sufficient width, and when the restraining piece 15 is bent, the bent portion 14 is sufficiently covered so that the repulsive force of the bent portion 14 can be suppressed.

FIG. 13 is a diagram showing the configuration of the fourth embodiment of the container according to the present invention. The fourth embodiment is an example in which the bottom surface 11 of the container is formed into a pentagonal shape, and all the bent portions 14 are tilted in the same direction. The restraining piece 15 is provided on each side wall, and the one bent portion 14 and the restraining piece 15 are engaged with each side wall 13. With such a configuration, it is possible to make a polygonal container having three or more sides. It should be noted that the stopping portion of the restraining piece 15 is also one. In addition, when there are a plurality of polygonal sides such as a quadrangle and a hexagon, it is possible to make the adjacent folding parts 14 face each other, and in this case, the restraining piece is provided only on the upper end of the side wall on the side where the folding parts are tilted. Since it is sufficient to provide 15, the number of the inhibition pieces 15 can be half the number of sides of the polygon.

FIG. 14 is a development view of the pentagonal container shown in FIG. Here, as in the first embodiment, when the sheet member is thick, the stress concentration can be prevented by shifting the position where the polygonal lines concentrate at the corners. In addition, since the directions in which the projecting portions are tilted are all the same, the vertexes 19 of the folding lines 17 of the projecting portions 14 and the corners 18 of the bottom surface 11 are also displaced in the same direction by the same shift amount. When a thin sheet-shaped member is used, even if such a shift is not provided and the ends of all the folding lines are connected, there is little repulsion at the folded portion, and there is no practical problem.

FIG. 15 is a diagram showing the configuration of the fifth embodiment of the container according to the present invention. In the fifth embodiment, an example in which a frame 20 is provided instead of the restraining piece 15 and is attached to the upper end of the box body 10 to enhance the strength of the container, and the folding portion 14 is held by the frame 20 Is. Frame 20
Is a groove 20 into which the upper end of the side wall of the box body 10 can be inserted.
It is provided with a and is configured to be attachable to and detachable from the box body 10. Locking holes 20b are provided on at least a pair of opposing sides of the frame 20, and the frame 20 can be easily mounted by inserting the engaging pieces 13c provided on the upper ends of the side walls 13a of the box into the locking holes 20b. It does not come off. The width of the groove 20a provided in the frame 20 corresponds to the shape of the upper end of the side wall of the box body 10, so that the portion where the upper end of the bent portion 14 fits has a wider groove width than the other portions. .
Therefore, the upper end of the protruding portion 14 is also inserted into the groove 20a together with the upper end of the side wall 13, and the repulsive force is suppressed by the frame 20.

FIG. 16 is a diagram showing the construction of the sixth embodiment of the container of the present invention. In the sixth embodiment, in addition to the configuration shown in FIG. 15, the frame 20 is further provided with a sheet-like lid 21. As shown in FIG. 16, the lid 21 has four sides 21a.
Is bent upward, and on the other hand, on the frame 20 side, a receiving portion 20c for receiving the lid 21 is provided inside. In addition, the recesses 20d are provided substantially in the center of the opposite sides of the frame 20, and the locking pieces 20 that lock the lids 21 on both sides thereof.
e are provided respectively. On the other hand, on the lid 21 side, an engaging recess 21b is provided at a position corresponding to the engaging piece 20e, and the engaging recess 21b and the engaging piece 20e are engaged with each other, and the engaging recess 21b is provided between them. The rising portion 21c is the frame 2
It is configured so as to be located in the zero recess 20d. Lid 2
To attach 1, push the entire lid 21 into the frame 20,
The engaging recess 21b is locked to the locking piece 20e of 20. To remove the lid 21, the rising portions 21c between the engaging recesses 21b may be pushed inward to release the engagement with the frame 20. Other configurations are similar to those of the container shown in FIG.

FIG. 17 is a diagram showing the construction of the seventh embodiment of the container of the present invention. In the seventh embodiment, FIG. 15 and FIG.
Similar to the container shown in 6, the frame 20 is provided,
Engagement recesses 20f are provided on the side portions of the frame 20, and projections 20g projecting inside the groove 20a are provided on both sides of the engagement recesses 20f, so that the folded-back portion 13d provided on the upper end of the side wall 13 of the box 10 is locked to these projections. I was allowed to. To remove the frame 20,
The folded piece 13d is pushed inward through the recess 20f to release the engagement. The lid 21 may be provided as in the example shown in FIG.

FIG. 18 shows the engaged state of the frame 20 and the folded-back portion 13c of the container of the fifth embodiment shown in FIG. 15, and the engaged state of the frame 20 and the folded-back portion 13d of the container of the seventh embodiment shown in FIG. The state is shown in a sectional view. In addition, FIG.
The sectional view at the time of providing the lid 21 in the container of the seventh embodiment shown in FIG. The lid 21 may be locked inside the side wall 13 as shown in FIG.
As shown in (b), it may be locked on the side wall 13. It is needless to say that the locking position of the lid can be similarly changed in the sixth embodiment shown in FIG.

FIG. 20 is a diagram showing the construction of the eighth embodiment of the container of the present invention. In the eighth embodiment, the bending preventing frame 22 is locked to the box 10. Frame 22
Has approximately the same length as one side of the box body 10, and has a groove 22a provided therein, and the groove 22a is inserted into the upper end of the opposite side wall 13 of the box body 10 to be mounted. Side wall 1 of box 10
Engagement pieces 13e are provided on both sides of the upper end of the frame 3, and locking holes 22b are provided at corresponding positions of the frame body 22 to engage the engagement pieces 13e.
Lock e. When removing the frame, the engagement piece 13e is pushed inward to release the lock. In addition, the folding part 14 of the box body 10 is similar to the above-described first to fourth embodiments,
A restraining piece 15 is provided on the upper end of the box body 10 to hold the folded position by the restraining piece 15.

21 and 22 are views showing the construction of the ninth embodiment of the container of the present invention. In the ninth embodiment,
The folded-back portion 10c is provided at a position other than the portion where the folded-out portion 14 on each of the upper ends of the box body 10 is folded, and the box body 1 is provided.
A removable frame 23 was provided on each side of the upper end of 0. The frame 23 has a folded portion 10c and a folded portion 1 inside.
4 has a groove 23a that fits at the upper end.
Then, the upper end of the folded-out portion 14 that is folded out to the side wall 13a side is fitted to hold the position.

The frame 23 is composed of a first member 23a having substantially the same length as the upper end of the folding portion 14 and a second member 23b corresponding to the upper end of the box body 10 other than the folding portion 14. These first and second members are connected via a hinge 23c, the first member is diffracted upward with respect to the second member, and the engagement with the protruding portion 14 is released, The folding portion 14 can be expanded without removing the frame body 23.

FIG. 22 is a diagram showing a procedure for attaching and detaching the frame body 23. As shown in FIG. 22, the second member 23b is fitted to the folded-back portion 10c, and the first member is fitted to the side wall 13a and the folded-out portion 14 to be mounted. An engaging piece 10d projects from the folding back 10c and engages with an engaging recess 23e provided in the first frame member. In addition, the first member 2
Since 3a is rotatable with respect to the second member 23b by the hinge 23c, only the first member 23a is attached to the box body 10.
Can be removed from. The first member 23a and the second member 23b may be provided with a lock portion that locks each other when mounted on the box body 10. Also,
The free end portion of the first frame member 23a is L-shaped, and is configured to engage with the end portion of the second member (23b-1) of the frame body mounted on the adjacent side. There is.

By providing the sash in this way,
As the strength of the container increases, the assembly of sheet members,
Easy to deploy. In addition, by diffracting the first member 23a upward through the hinge 23c, the frame member 23
The container can be expanded without removing it from the container 1, and the stored items can be taken out easily. Further, since the frame 23 is detachable, the container can be easily washed and stored.

FIG. 23 is a view showing a mounted state of the frame body 23. As shown in FIGS. 23 (a) and 23 (b), in this example, the side wall 13 is provided with a folded back portion 10c, and the frame body 23 is provided with a projecting portion projecting inward at the lower end of the outer wall thereof. Is configured to cover. As another configuration example, when the sheet member is thick or is made of a soft material, as shown in FIG. 23 (c), the folding member 10c is not provided on both surfaces of the upper end portion of the side wall 13 as shown in FIG. The frame body may be fixed with an adhesive or the like.

FIG. 24 is a diagram showing an example in which a lid is provided on the container shown in FIG. In this example, the lid 24 is attached to the outside of the frame body 23. Protrusions 24a are provided at a plurality of locations inside the lid 24, and the protrusions 24a are provided on the outer wall of the frame 23.
A recess 23d that engages with a is provided, and the projection 2
The lid 4 is securely attached to the box body 10 (frame body 23) by engaging 4a with the recess 23d.

FIG. 25 is a diagram showing the construction of the tenth embodiment of the deployable container of the present invention. Also in the tenth embodiment, the frame body 25 is attached to the upper end of the box body 10 to fix the folding portion 14, and the frame body 25 is a slide type here. That is, a groove 25a having a width of about 2 to 3 times the thickness of the sheet member is provided inside the frame body 25, and the upper end of the box body 10 and the folding portion 14 are fitted into the groove 25a to fold it. The extending position of the projecting portion 14 is maintained. At the upper end of the side wall of the box body 10, a folded back portion 10f is provided in addition to the folded portion of the folding portion 14, and this portion is engaged with the groove 25a. In this example,
All the folding parts 14 are arranged to be folded in the same direction, and the width is almost the same as the width of the upper end of the folding part 14 from one end of the frame body 25 (the end opposite to the folding part 14). The hinge 25b is provided inside. Therefore, by rotating this end upward through the hinge 25a, the frame 25
Can be slid along the upper end of the box body 10 in the direction opposite to the folding portion 14, and the fixed state of the folding portion 14 can be fixed by sliding the frame body 25 by the width of the upper end of the folding portion 14. It can be canceled.

Further, a slide portion (a width of an upper end of the folding portion 14) is provided in a portion of the frame body 25 that comes into contact with the folding back 10f.
If only the recessed portion 10g is provided and the protruding portion 10c is provided with the stopper 10h that engages with this recessed portion, handling during sliding becomes easy. The frame 25 and the box 1
0 If the degree of sliding of the upper end is hard, use this stopper 10
h may not be provided.

FIG. 26 is a diagram showing the structure of the eleventh embodiment of the present invention. In the present embodiment, the entire frame body is integrally formed, but a part of the frame body is diffractable so that the engagement of the protruding portion 14 can be released. That is,
An engaging piece 10g is provided at the center of each upper edge of the box body 10, and an engaging hole 26a is provided at a position corresponding to the engaging piece 10g on the frame body 26 side. The frame body 26 has a groove on the entire circumference which fits into the upper end of the box body 10, and the box body 1 is fitted in this groove.
By fitting the upper end of 0, the position of the protruding portion 14 is held and the engaging piece 10g is engaged with the engaging hole 26a.
The frame body is securely fixed to the box body 10 by engaging with the box body 10. Hinge 26b is formed at both ends of an engagement hole 26a provided on one side of the frame 26 facing each other.
The frame 26 rotates to both sides via this hinge,
The folding portion 14 can be released without removing.

FIG. 27 shows an example in which the container shown in FIG. 26 is provided with a lid. A flange 26c is formed on the outer periphery of the frame body 26, and a concave groove 27a that fits into the flange 26c is provided on the inner surface of the lid 27.
It fits in the lid so that it fits tightly. FIG. 27
FIG. 2B is a sectional view showing a mounting state of the box body 10, the frame body 26, and the lid 27. The lid 27 can be attached / detached by utilizing the elasticity of the lid 27, such as tapper wear (trademark), and the engagement piece 10e is pushed inward to release the engagement of the frame body 26. Then, it can be detached from the box body 10 integrally with the frame body.

In the example shown in FIG. 27, all the folding parts 14 are tilted in the same direction, but as shown in FIG. 28, adjacent folding parts may be tilted in the opposite direction.

FIG. 29 is a view showing the structure of the twelfth embodiment of the deployable container according to the present invention. In the twelfth embodiment, FIG.
As shown in FIG. 9 (a), the same restraining piece as in the first embodiment is provided on the upper end of one side wall 13a of the box body 1, and the upper end of the side wall 13b on the side where the restraining piece is not provided and the folding The extending piece 30 is provided at the upper end of the triangular portion 14a adjacent to the side wall 13b of the portion 14. The extending piece 30 is folded back to the outside when the container is assembled, and the extending portion 30a at the upper end of the one triangular portion 14c of the extending portion 14 has the extending portion 14a.
At the same time, it is folded down to the side wall 13a side.

Here, in this embodiment, the extension line of the folding line 14b that defines the side wall 13b and the one triangular portion 14a and the vicinity thereof are thinly stretched by applying heat or pressure (stretching portion 30b). ). In the vicinity of this extension line, when the container is assembled, together with the fold-out portion 14, it circumvents the outermost side when folded to the side wall 13a side, so at the fold-out portion (corner portion), The other members located, that is, the side wall 13a and the other triangular portion 14c of the protruding portion 14, and the side wall 13b and one triangular portion 14a of the protruding portion 14, repel each other, and the protruding portion 14 is engaged with the restraining piece 15. It will be difficult to stop. By providing the extending portion 30b as in the present embodiment, it is possible to obtain a length necessary to bypass the outside of the corner portion, and the folding portion 14 can be folded down to the side wall 13a side without difficulty.

29 (b) is a cross-sectional view of the extending portion 30b, and FIG. 29 (c) is a view showing a state in which the extending portion 30 is folded down to the side wall 13a side together with the extending portion 14 in the present embodiment. And FIG.29 (d) is a figure which shows the state just before assembling the container 1 of this embodiment.

FIG. 30 is a diagram showing the construction of the thirteenth embodiment of the deployable container of the present invention. In the present embodiment, instead of the restraining piece or the sash, the stopper 31 having the L-shaped cross section is used to lock the bent portion 14. Stopper 3
1, the upper end 31a has a U-shape, and the upper end of the container 1 is sandwiched between the recesses formed here. Further, the lower end 31b extends toward the inside at a substantially right angle, and as shown in FIGS.
1 The upper end is sandwiched between the upper ends of the container 1, and the lower end is fitted along the bottom of the container 1. The stopper 31 is preferably made of an elastic member such as plastic. Also,
Its width is almost the same as the side wall 13a on the side where the folding section 14 is folded, and its height is substantially the same as the height of the box body. Figure 3
0 (d) is a view showing a state in which the container 1 is assembled using the stopper 31.

Next, a fourteenth embodiment of the present invention will be described with reference to FIGS. 33 to 37. In the fourteenth embodiment,
A fold line 40 extends between the constricted portions of the insertion hooks provided on both sides of the restraining piece 15 that extends from the side wall 13a and is bent outward.
By providing a (see FIG. 34), the tip of the restraining piece 15 is prevented from protruding outward. 33 is a perspective view showing a state of a container in which no folding line is provided between the insertion hooks, FIG. 34 is a perspective view showing a state in which a folding line 40a is provided between the insertion hooks, and FIG. It is the figure seen from the side surface.

As shown in FIG. 33, in the case where the container is simply provided with the insertion hook, the tip of the restraining piece 15 bulges outward, and the restraining piece 15 is in a state in which a repulsive force is exerted toward the outside. Therefore, there is a problem that the restraining piece 15 and the protruding portion 14 are easily disengaged from each other. On the other hand, as shown in FIGS. 34 and 35, by providing the bent line 40a between the insertion hooks, the repulsive force of the restraining piece 15 works toward the inside, and the restraining piece 15 and the protruding portion It becomes difficult for the locking of 14 to come off.

Incidentally, this polygonal line is denoted by reference numeral 40b in FIG.
Alternatively, as shown in FIG. 5, the detour may be made toward the upper side of the container. With this configuration, as shown in the side surface of FIG. 37, the restraining piece 15 bends in accordance with the shape of the fold line 40b, and the restraining piece 15 can be prevented from protruding.

FIG. 38 is a perspective view showing the structure of the fifteenth embodiment of the present invention. In the present embodiment, another folding line 41 is provided outside the folding line 12a that defines the side wall 13b on the side where the restraining piece 15 is not provided and the bottom surface 11 of the container. The fold line 41 comes closest to the fold line 12a in the vicinity of the central portion in the extending direction of the side wall 13b, and the fold line 12a becomes closer to the outside of the side wall 13b.
It is provided with a gentle curve away from the car.
With this configuration, the bulge of the side wall 13b caused by the repulsive force of the material of the container as shown in FIG. 33 can be corrected.

When a container is folded up with a relatively rigid and highly elastic material such as a polypropylene sheet, the repulsive force of this material causes the side wall of the container, particularly the side wall 13b, to bulge outward and distort, causing leakage of stored items. Alternatively, problems such as a decrease in the strength of the container occur, but the structure of the fifteenth embodiment can solve these problems. Note that FIG. 39 is a view of the container as viewed from below, and the state of the folding line 41 is more clearly shown. Also, FIG.
0 is a cross-sectional view taken along the line AA in FIG.

FIG. 41 is a diagram showing the structure of the sixteenth embodiment of the present invention. In the present embodiment, a fold line 42 is provided substantially parallel to the fold line 17b near the outer side of the fold line 17b that defines the folding portion 14 and the side wall 13a.
A repulsion force absorption band is formed between the fold line 42 and the fold line 42. This repulsive force absorption band absorbs the repulsive force generated at the folding line 17b when the folded portion 14 is folded toward the side wall 13 side, and suppresses the repulsive force generated between the folded portion 14 and the side wall 13a to be small. I chose FIG. 42 is a diagram showing a state where the projecting portion 14 is folded down toward the side wall 13a.

FIG. 43 is a view showing a state in which the protruding portion 14 is completely folded and attached to the side wall 13a.
As shown in FIG. 43, in the state in which the folded-out portion 14 is completely folded, distortion is generated in the vicinity of the folded corners, particularly in the vicinity of the upper end of the container. In the sixteenth embodiment, this distortion is further removed, and its configuration is shown in FIG.
Shown in.

As shown in FIG. 44, in the sixteenth embodiment, the side wall 13b adjacent to the side wall 13a on the side where the folding portion 14 is laid down is substantially parallel to the fold line 17c that defines the folding portion 14 and the side wall 13b. Another polygonal line 43 was provided to form a strain absorption band. By providing this absorption band, as shown in FIG. 45, it is possible to absorb and correct the strain generated in the vicinity of the bent portion.

FIG. 46 is a diagram showing the structure of the seventeenth embodiment of the present invention. In this embodiment, the lid member 44 is made to extend on the upper ends of the side walls 13b of the container which face each other. The lid member 44 has a length of about half of the other side wall 13a, and is abutted from both sides to form a lid. Locking claws 45 are provided on both sides of each lid member, and the side walls 13b,
A locking hole 46 that engages with the locking claw 45 is provided at the upper end of 13b. By engaging the locking claw 45 with the locking hole 46, the lid is closed and the positions of the side walls 13a and 13b are adjusted. It was fixed between the left and right locking claws of the lid. Therefore, even if the engagement between the restraining piece 15 and the protruding portion 14 is displaced for some reason, the side wall falls and the container is opened unless the side wall 13a and the lid 44 are unlocked. There is no.

FIG. 47 is a view showing a state in which the restraining piece 15 is engaged with the projecting portion 14 and the engaging claw 45 of the lid member 44 is engaged with the engaging hole 46, and FIG. FIG. 6 is a diagram showing a state in which the engagement piece 15 and the protruding portion 14 are disengaged from each other.

In the seventeenth embodiment, the lid members are provided on the opposite side walls, and the lids are closed from both sides. However, the lid member extending from only one side wall similarly has the locking claws and the locking holes. Can be provided to obtain the same effect. Even if the lid member is separate from the container body, the same effect can be obtained by providing locking claws on the left and right sides of the lid. The shape of the lid member 44 can be appropriately changed according to the purpose of use.

FIG. 49 is a diagram showing the structure of the eighteenth embodiment of the present invention. In the present embodiment, a part of the restraining piece 15 is fixed to the outer surface of the side wall 13a with an adhesive 47 or the like without engaging the restraining piece 15 with the bent portion 14. In this example, the eaves portion 48 is formed on the upper end of the side wall 13b so that the contents can be sealed with a film-like lid.

FIG. 50 is a view showing a modified example of the eighteenth embodiment, in which the portion 4 of the restraining piece 15 following the upper edge of the side wall 13a.
9 is an eaves-like fold outward. With this configuration, the film-shaped lid 5
When attaching 0, a crimping jig can be used, and a container with a lid can be easily provided. FIG. 51 is a cross-sectional view showing a state in which the crimping jig 51 is used, in which an adhesive 52 is interposed between the lid 50 and the eaves portion 49, and the lid 50 and the eaves portion 49 are vertically joined by the crimping jig. I try to crimp. Note that thermocompression bonding may be performed without using the adhesive 52.

FIG. 52 shows the 15th embodiment and the 1st embodiment described above.
FIG. 6 is an exploded view of a container having the features of the sixth embodiment. Also,
FIG. 53 is an exploded view of a container having the features of the fifteenth and seventeenth embodiments described above.

As described above, according to the deployable container of the present invention, since the folding portion at the corner of the box is folded outward, the area where dirt is attached to the stored items is reduced as much as possible. Is possible. Further, the folded-out portion folded outward is engaged with a holding member such as a restraining piece or a frame body to hold its position, and by releasing this engagement, the container can be easily deployed. it can.
Furthermore, by shifting the position of the intersection of the folding line that defines the folding portion and the folding line that defines the bottom and side walls of the box, it is possible to bend the folding portion without difficulty, and Since damage to the container is prevented, it is possible to provide a container that can withstand repeated use.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a deployable container according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a deployable container according to a first embodiment of the present invention.

FIG. 3 is a diagram showing a procedure for engaging the protruding portion and the restraining piece in the first embodiment of the deployable container according to the present invention.

FIG. 4 is a diagram showing a configuration of a deployable container according to a first embodiment of the present invention.

FIG. 5 is a diagram showing an example in which two deployable containers of the present invention are stacked and used as a container with a lid.

FIG. 6 is a diagram showing an example in which a lid is provided on the expandable container of the present invention.

FIG. 7 is a diagram for explaining a state of folding lines of the expandable container of the present invention.

FIG. 8 is a diagram for explaining a state of a fold line of a fold-out portion of the expandable container of the present invention.

FIG. 9 is a diagram for explaining the state of the folding portion of the expandable container of the present invention.

FIG. 10a is a view showing another example of the restraining piece of the deployable container of the present invention.

FIG. 10b is a view showing another example of the restraining piece of the deployable container of the present invention.

FIG. 10c is a view showing another example of the restraining piece of the deployable container of the present invention.

FIG. 11 is a diagram showing a configuration of a deployable container according to a second embodiment of the present invention.

FIG. 12 is a diagram showing a configuration of a deployable container according to a third embodiment of the present invention.

FIG. 13 is a diagram showing a configuration of a fourth embodiment of the expandable container of the present invention.

FIG. 14 is a development view showing a configuration of a fourth embodiment of the development-type container of the present invention.

FIG. 15 is a diagram showing a configuration of a deployable container according to a fifth embodiment of the present invention.

FIG. 16 is a diagram showing a configuration of a deployable container according to a sixth embodiment of the present invention.

FIG. 17 is a diagram showing a configuration of a deployable container according to a seventh embodiment of the present invention.

FIG. 18 is a cross-sectional view showing a state of a frame body and an engaging piece in the fifth embodiment and the sixth embodiment.

FIG. 19 is a cross-sectional view showing a state of a frame body, an engagement piece, and a lid in the fifth embodiment and the sixth embodiment.

FIG. 20 is a diagram showing a configuration of an expandable container according to an eighth embodiment of the present invention.

FIG. 21 is a diagram showing a configuration of a ninth embodiment of the expandable container of the present invention.

22 is a diagram showing a procedure for mounting the frame body on the container shown in FIG. 21.

FIG. 23 is a view showing another way of mounting the frame body of the container shown in FIG. 21.

24 is a diagram showing an example in which a lid is provided on the container shown in FIG. 21.

FIG. 25 is a diagram showing the configuration of a tenth embodiment of the expandable container of the present invention.

FIG. 26 is a diagram showing a configuration of an eleventh embodiment of the deployable container of the present invention.

27 is a diagram showing an example in which a lid is provided on the container shown in FIG. 26.

28 is a diagram showing an example in which the folding direction of the folding portion of the container shown in FIG. 26 is changed.

FIG. 29 is a diagram showing the configuration of a twelfth embodiment of the expandable container according to the present invention.

FIG. 30 is a diagram showing the configuration of a thirteenth embodiment of the expandable container of the present invention.

FIG. 31 is a diagram showing a configuration of a conventional expandable container.

FIG. 32 is a diagram showing a configuration of a conventional deployable container.

FIG. 33 is a diagram for explaining the fourteenth embodiment of the present invention.

FIG. 34 is a diagram showing a configuration of a fourteenth embodiment of the present invention.

FIG. 35 is a side view of the configuration shown in FIG. 34.

FIG. 36 is a diagram showing a modification of the fourteenth embodiment of the present invention.

FIG. 37 is a side view of the modification example shown in FIG. 36.

FIG. 38 is a diagram showing the configuration of the fifteenth embodiment of the present invention.

FIG. 39 is a diagram of the configuration shown in FIG. 38 as viewed from below.

FIG. 40 is a cross-sectional view taken along the line AA in FIG. 38.

FIG. 41 is a diagram showing a configuration of a sixteenth exemplary embodiment of the present invention.

FIG. 42 is a diagram showing a configuration of a sixteenth exemplary embodiment of the present invention.

FIG. 43 is a diagram showing a configuration of a sixteenth exemplary embodiment of the present invention.

FIG. 44 is a diagram showing a modified example of the sixteenth embodiment of the present invention.

FIG. 45 is a diagram showing a modified example of the sixteenth embodiment of the present invention.

FIG. 46 is a diagram showing the configuration of the seventeenth embodiment of the present invention.

FIG. 47 is a diagram showing the configuration of the seventeenth embodiment of the present invention.

FIG. 48 is a diagram showing the configuration of the seventeenth embodiment of the present invention.

FIG. 49 is a diagram showing the configuration of the eighteenth embodiment of the present invention.

FIG. 50 is a diagram showing a modified example of the eighteenth embodiment of the present invention.

FIG. 51 is a view showing a state in which a crimping jig is used in the eighteenth embodiment of the present invention.

FIG. 52 is a diagram showing a developed view of the expandable container according to the present invention.

FIG. 53 is a diagram showing a developed view of the expandable container according to the present invention.

[Explanation of symbols]

1 container 10 boxes 11 Bottom 12 Fold lines that define the bottom surface 13 Side wall 14 Extension part 15 deterrent pieces 16 lid 17 Folding line that defines the protruding portion 18 Bottom corner 19 Discontinuous part between the protruding part and the bottom corner part 20 frame 20a groove 21, 24 lid 22, 23, 25, 26 frame

Claims (24)

[Claims] 1. A deployable container formed by folding a sheet-shaped member, wherein the container has a rectangular bottom surface, and a portion extending from each side defining the bottom surface is raised as a side wall,
A portion between adjacent side walls is bent outward at the corner of the bottom face or near the corner as an apex to form a rectangular box body, and the folded portion is further folded to the side wall of the box body and A holding member that engages with the bent-out portion to suppress the repulsive force and rotation of the bent-out portion, joins or engages with the side wall, and holds the folded position of the folded-out portion. Expandable container. 2. The expandable container according to claim 2,
The folded-out portion includes a first fold line along the side of the side wall (first side wall) on the side where the folded-out portion is collapsed, and a side wall (second side wall) adjacent to the first side wall. The second folding line along the side edge and the third folding line extending obliquely between the first folding line and the second folding line are folded out. The apex of the projecting portion is at least the second
The deployable container, which is located at a position displaced from the corner apex of the bottom face toward the inside of the container in the extending direction of the fold line. 3. The deployable container according to claim 1 or 2, wherein all the folded-out portions are folded in the same direction. 4. The container according to claim 1, wherein the adjacent folded portions are folded in opposite directions. 5. The deployable container according to claim 1, wherein the holding member is a restraining piece provided at an upper end portion of the side wall of the box body, and the restraining piece is provided outside the box body. A deployable container characterized in that the folding position of the folding portion is held by bending and engaging with the folding portion. 6. The container according to claim 5, wherein the restraining piece has an engaging piece, and the engaging piece is provided between the folded portion and a side wall outer surface where the folded portion is folded. A deployable container characterized in that it is sandwiched between the two and the folded-out portion and the restraining piece are engaged with each other. 7. The container according to claim 5, wherein the restraining piece has an engaging hole, and the bent portion is inserted into the engaging hole to engage the bent portion with the restraining piece. A deployable container characterized by being made. 8. The container according to claim 5, wherein an engaging portion for engaging the inhibiting piece is provided on an outer surface of a side wall of the container, the inhibiting piece is engaged with the engaging portion, and the protruding portion is provided. A deployable container characterized by being sandwiched between the restraining piece and the outer surface of the side wall of the container to engage the folded portion and the restraining piece. 9. The container according to claim 1, wherein the holding member includes a groove that fits in an upper end portion of the box body, and is configured by a frame body that is detachable from the box body. A deployable container characterized in that the position of the folding portion is held by fitting the upper end of the folding portion into the groove of the frame body. 10. The container according to claim 9, wherein an engaging portion for engaging the box body and the frame body with each other is provided at upper ends of side walls of at least two opposite sides of the container, and both sides of the engaging portion are provided. In the expandable container, the frame can be diffracted via a hinge portion. 11. The container according to claim 9, wherein the frame body is formed of a separate member for each side of the box body. 12. The container according to claim 11, wherein the member forming the frame body is composed of two portions diffractably connected via a hinge portion, and the hinge portion extends from one end portion of the container. A deployable container, which is formed at a position corresponding to the length of the upper end of the folding portion. 13. The container according to claim 12, wherein one of two parts forming the member is slidable with respect to the upper end of the box body. 14. The collapsible container according to claim 9, further comprising a lid fitted to the frame body. 15. The deployable container according to claim 5, wherein the second upper end of the second side wall, the second fold line, and the third fold line.
The upper end of the triangular portion defined by the fold line and the upper end portion of the triangular portion can be bent outward, and when the container is assembled, the upper end of the triangular portion extends. A deployable container, wherein an existing portion is configured to be folded together with the projecting portion, and an extended portion of the second folding line in the extending portion and the vicinity thereof are thinly stretched. 16. The expandable container according to claim 1, wherein the holding member is an L-shaped cross-section member provided on the outer wall of the box body, and the L-shaped member is an upper end. Has a locking portion that locks to the upper end of the box body,
A deployable container characterized in that the locking portion is locked to the upper end of the box body to hold the folded position of the folding portion. 17. The expandable container according to claim 6, wherein the restraining piece includes a fourth fold line extending in the extending direction of the first side wall. 18. The expandable container according to claim 17, wherein the fourth fold line has a shape detoured toward an upper edge of the container. 19. The deployable container according to any one of claims 1 to 18, wherein the fifth fold is located near an outer side of a fold line (fifth fold line) that defines the second side wall and the bottom surface of the container. A sixth fold line is provided in the same direction as the line, and the sixth fold line is closest to the fifth fold line in the vicinity of the central portion of the second side wall and is on the end side of the second side wall. A deployable container characterized in that it is provided so as to separate from the fifth fold line as it goes. 20. The expandable container according to claim 1, wherein a seventh fold line is provided in the vicinity of the outside of the first fold line and is substantially parallel to the first fold line. A deployable container, wherein a repulsion force absorption zone is formed between the first fold line and the seventh fold line. 21. The expandable container according to claim 20, wherein an eighth fold line is provided in the vicinity of the outside of the second fold line and is substantially parallel to the second fold line. A developable container, wherein a strain absorption band is formed between the first folding line and the eighth folding line. 22. The deployable container according to any one of claims 1 to 7 and 17 to 21, wherein the container is provided with a lid member, the lid member is provided with a locking claw, and the lid member is attached. An engaging hole that engages with the locking claw is provided in the upper end of the first side wall in the closed state, and the position of the side wall of the container can be fixed by the locking claw and the engaging hole. Characteristic deployable container. 23. The deployable container according to claim 1, wherein the holding member extends from the first side wall, and an adhesive that holds the holding piece to the side wall of the container. A deployable container characterized by being constituted by means. 24. The deployable container according to claim 24, wherein the restraining piece is bent and an eave portion extending outward is provided at an upper end of the first side wall. container.