JP2020015532A - Folding type box - Google Patents

Abstract

To provide a folding type box which can be folded compactly when not in use and whose folding work and assembly work can be quickly performed.SOLUTION: A folding type box 1A is a storage box including a foldable outer container 2 and a foldable heat insulation container 3 contained inside the outer container 2. The heat insulation container 3 includes a bottom panel 3b, a pair of tilting panels 3c, 3cand a pair of bending panels 3d, 3d. The outer container 2 includes: first side surfaces 2c, 2c which are arranged facing the pair of tilting panels 3c, 3cand ridge-folded in a direction away from the heat insulation container 3 to form a flange-like part 2f when the heat insulating container 3 is folded; and second side surfaces 2d, 2d which are arranged facing the pair of bending panels 3d, 3d and folded into the valley-folded parts of the bending panels 3d, 3d when the insulation container 3 is folded. The flange-like part 2f includes a first fixing structure 5 for fixing the flange-like part 2f to the side of a bottom panel 2b in a bent state.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a foldable box that can be folded compactly when not in use, and that can quickly and smoothly perform its folding and assembling operations.

In recent years, frozen and refrigerated foods sold at retail stores such as convenience stores, drug stores, and supermarkets are required to be delivered to retail stores from storage and processing facilities other than these retail stores. .
In this case, each frozen / refrigerated food is transported in a state of being housed in a heat-insulating box having heat-insulating properties for each type.
In addition, a heat insulating box used for such an application generally uses a thick plate-shaped heat insulating material in order to exhibit a sufficient heat insulating effect.
And since the heat insulation box which consists of such a thick plate-shaped heat insulation material is especially bulky, when not in use, it is desirable to fold compactly.
Further, as a prior art relating to a foldable heat insulating container that meets the above-mentioned object, for example, “Foldable heat insulating container” disclosed in JP-A-2006-27625 (Patent Document 1) and JP-A-2016-210466 are disclosed. Japanese Patent Application Laid-Open Publication No. 2010-208644 discloses “Cooling and keeping container, outer bag, assembling method, folding method, and storage method of cooling and keeping container” (Patent Document 2). Patent Document 3), “Cooling container” disclosed in JP-A-2009-83876 (Patent Document 4), “Heat insulation box” disclosed in JP-A-9-165073 (Patent Document 5), "Folding type cold insulation and warming box" disclosed in Kaihei 11-59739 (Patent Document 6) and "Folding type cold insulation and warming box" disclosed in JP-A-10-287372. Box "has been (Patent Document 7), and the like known.

JP 2006-27625 A JP 2016-210466 A JP 2010-208644 A JP 2009-83876 A JP-A-9-165073 JP-A-11-59739 JP-A-10-287372

The invention disclosed in Patent Literature 1 has a problem that the heat insulating container cannot be folded when the thickness of the heat insulating material constituting the wall surface of the heat insulating container is large.
Further, in the case of the invention disclosed in Patent Document 2, since there is no fixture or the like for holding the heat-insulated container in a folded state, the folded heat-insulated container is unintentionally restored. There is a problem that there is a fear that it is not easy to handle the heat-insulated container in a folded state.
On the other hand, the inventions disclosed in Patent Documents 3 to 5 are provided with a fixing device for holding the heat-insulated container in a folded state, and thus have the disadvantages described in Patent Document 2 described above. Does not occur. However, in the inventions disclosed in Patent Documents 3 to 5, every time the heat insulating container is folded, an operation of fixing the folded heat insulating container with the fixing tool is performed. It was necessary to remove the fixture. For this reason, when many heat insulation containers need to be folded or assembled, there is a problem that it is difficult to improve the workability.
Further, in the inventions disclosed in Patent Documents 6 and 7, a lid attached to the heat insulating container is used as a fixing tool for holding the heat insulating container in a folded state. However, for example, when stackable foldable insulated containers are used and each of the insulated containers is not provided with a lid as an accessory thereof, the inventions disclosed in Patent Documents 6 and 7 are described above. As in the case of the invention disclosed in Patent Literature 2, there is a problem that the folded state of the heat insulating container cannot be maintained.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has an object to be able to be folded even when the thickness of the heat insulating material is large, to keep the folded state, Another object of the present invention is to provide a foldable box capable of performing assembly work quickly and smoothly.

  A foldable box according to a first aspect of the present invention for achieving the above object includes a foldable outer container made of a sheet material, provided with a first opening at an upper portion, and a foldable outer container, and a plurality of thick plate materials. And a foldable heat-insulating container accommodated in the outer container and having a second opening, wherein the heat-insulating container comprises a bottom panel and a pair of tilting panels forming side surfaces of the heat-insulating container. And a pair of bent panels also forming a side surface of the heat insulating container.The outer container is arranged facing the pair of tilting panels, and is folded in a direction away from the heat insulating container when the heat insulating container is folded. It has a first side surface forming a collar portion and a second side surface facing the pair of bent panels, and the collar portion bends the collar portion toward the bottom panel. Equipped with a first fixing structure for fixing in an extended state It is characterized in that there.

  In addition, the folding box according to the second invention is made of a sheet material, has a first opening at an upper portion, and is capable of being folded, and is made of a plurality of thick plate materials, and has a second opening at an upper portion. And a heat-insulating container housed in the outer container and foldable, wherein the heat-insulating container is provided on the bottom panel so as to be tiltable on the bottom panel, and is disposed opposite to each other. A pair of tilting panels, and a pair of folding panels that are stacked on the pair of tilting panels when folded, and that are folded along folds that are arranged in the horizontal direction when folded, and that are arranged to face each other The outer container is arranged facing the pair of tilting panels, and when the heat insulating container is folded, the outer container is mountain-folded in a direction away from the heat insulating container to form a brim-shaped portion; Arranged facing the bending panel And a second side surface that is folded into the valley-folding portion of the folding panel when the heat-insulating container is folded, the collar-shaped portion for fixing the collar-shaped portion to the bottom panel side in a folded state. It has a first fixing structure.

In the first and second inventions having the above configuration, the heat insulating container has an effect of maintaining an article accommodated in the hollow portion in a desired temperature zone. The outer container has a function of accommodating the above-mentioned heat insulating structure in a hollow portion thereof and supporting a pair of tilt panels and a pair of bent panels when the heat insulating container is assembled into a hollow container.
Further, since the outer container is made of a sheet material, the outer container can be folded together with the operation of the heat insulating container when the heat insulating container is folded.
In addition, the pair of tilting panels and the pair of folding panels in the above-described heat-insulating container are stacked on the bottom panel of the heat-insulating container when not in use, or stacked on the bottom panel in a state of being folded along the fold. Is done. Therefore, the heat insulating container according to the first aspect of the invention can be formed into a laminate of a thick plate when not in use, and has an effect of reducing the volume thereof.
Further, the first side surface of the above outer container has an effect of forming a brim-like portion in conjunction with the folding operation of the heat insulating container. And this brim-shaped part is used as a fixture for holding the folded state when the folding box is folded.
In addition, the second side surface of the outer container described above is folded into the valley fold portion of the folding panel in conjunction with the operation of forming the brim-like portion on the first side surface.
Further, the first connection structure has an operation of detachably fixing the collar portion on the outer surface of the outer container.

A foldable box according to a third aspect of the present invention is the foldable box according to the second aspect of the present invention, wherein the bent panel includes a reinforcing member arranged along the fold.
According to the third aspect of the present invention, in addition to the same action as that of the second aspect, the reinforcing member has an effect of reinforcing the periphery of the fold of the bent panel.

A foldable box according to a fourth aspect of the present invention is the foldable box according to any one of the first to third aspects described above, wherein the collar portion further includes a tongue-shaped portion extending at a tip of the collar portion. A fixing auxiliary portion, wherein the first fixing structure is provided only on the fixing auxiliary portion instead of the collar portion, or on the fixing auxiliary portion in addition to the collar portion. It is.
According to the fourth aspect of the present invention, in addition to the same operation as the above-described first to third aspects, the fixing auxiliary portion is provided with the first fixing portion at a position slightly away from the tip position of the brim-shaped portion. It has the effect of arranging the structure.
Further, the first fixing structure according to the fourth aspect of the present invention is arranged at a position slightly away from the tip end position of the brim-shaped portion, so that the pair of first fixing structures provided on the first side surface of the outer container. By joining and integrating the structures, when a force acts to open (open) the fold located at the tip of the brim-shaped portion, the structure has an effect of preventing the fold from being opened.
In this case, after folding the fourth invention, when carrying the fourth invention while maintaining the state by the first fixing structure, the fixing state by the first fixing structure is unintentionally released. The fourth invention has an effect of preventing a state during folding or assembly.

A foldable box according to a fifth aspect is the foldable box according to any one of the first to fourth aspects described above, wherein the first side surface of the outer container includes a thick portion that promotes formation of a brim-shaped portion. It is characterized by having.
According to the fifth aspect of the present invention, in addition to the same operation as the above-described first to fourth aspects of the present invention, when the first side surface is folded, the thick portion is formed on the boundary of the thick portion. Further, it has an effect of forming a fold on a line connecting vertices formed on the boundary. Thus, in the fifth invention, when the foldable box is folded, the flange-shaped portion having a desired size and shape is repeatedly formed at a desired position on the first side surface of the outer container.
Therefore, according to the fifth aspect, the folding box and the operation of fixing the folded state of the folding box can be quickly and smoothly performed.

A foldable box according to a sixth aspect is the foldable box according to any one of the first to fifth aspects described above, wherein the inner side of the first side of the outer container is provided with a second side for detachably fixing the tilting panel. 2 is provided.
According to the sixth aspect of the present invention, in addition to the same action as the first to fifth aspects of the invention, the second fixing structure can be used to assemble the vertical panel of the tilting panel when assembling the heat insulating container in the outer container. The upper edge (the edge forming the second opening in the tilting panel) is detachably fixed to the inner surface of the first side surface of the outer container.

A foldable box according to a seventh aspect is the foldable box according to any one of the first to sixth aspects, wherein the edge is formed of a flexible sheet material and forms a second opening in the folded panel. And a connection sheet connecting the second side surface and the inner surface on the first opening side.
According to the seventh aspect of the present invention, in addition to the same operations as those of the first to sixth aspects, the connection sheet is provided with an edge forming the second opening in the bent panel and the outer container. This has an effect of connecting and integrating the second side surface with the inner surface on the first opening side.
According to the seventh aspect of the present invention, by providing such a connection sheet, a second opening of the folded panel with respect to the inner surface of the outer container is formed at the time of folding or assembling the outer container and the heat insulating container. This has the effect of changing the direction of the end face as desired.

An foldable box according to an eighth aspect is the foldable box according to any one of the first to seventh aspects, wherein an outer surface of a bottom surface of the outer container is equal to or larger than a plane dimension of the second opening of the heat insulating container. A stacking panel having a plane dimension obtained by subtracting a clearance from the plane dimension is provided.
The eighth invention having the above configuration has the same operation as the operation according to each of the first to seventh inventions. Further, when stacking a plurality of the eighth inventions in the vertical direction, the stacking panels are fitted into the second openings of the other foldable boxes disposed vertically below, so that the foldable boxes are connected to each other. This has the effect of preventing horizontal displacement of the connecting portion.

A foldable box according to a ninth invention is the foldable box according to any one of the first to eighth inventions, wherein the foldable box has the same plane dimension as the bottom plane of the heat insulating container or a plane dimension obtained by subtracting a clearance from this plane dimension. A lid body comprising: a lid panel; and a third fixing structure for detachably fixing the lid panel to a communication opening between the first opening and the second opening. It is.
The ninth aspect of the present invention has the same function as that of the first to eighth aspects. Further, the lid panel is covered by the second opening of the heat insulating container, and has an effect of closing the second opening.
Further, the third fixing structure has an action of detachably fixing the lid panel covered by the second opening to the container body, thereby preventing the lid panel from being unintentionally detached.

According to the first and second aspects of the present invention, at the time of the folding operation of the foldable box including the outer container and the heat insulating container, the first side surface of the outer container can be deformed to form the collar portion. . Then, the collar portion can be used as a fixture for holding the folding box in a folded state when the folding operation of the folding box is completed.
Therefore, according to the first and second aspects of the present invention, it is not necessary to provide a fixing member such as a band for holding the folded state of the folding box separately from the outer container and the heat insulating container.
In the first and second aspects of the present invention, the operation of releasing the fixed state of the collar member can be performed as a part of the operation when assembling the foldable box.
Therefore, according to the first and second aspects of the present invention, it is not necessary to provide a configuration (fixing tool or the like) for holding the folded state of the foldable box separately from the outer container and the heat insulating container. The structure of the folding box can be simplified.
Further, in the first and second inventions, the fixing operation of the collar portion or the releasing operation thereof can be performed as a part of the folding operation or the assembling operation of the foldable box.
Therefore, according to the first and second aspects, the folding operation or the assembling operation of the foldable box can be performed quickly with a small number of steps. As a result, according to the first and second aspects of the invention, it is possible to improve the work efficiency when performing the folding work or the assembling work of the foldable box.

According to the third aspect, in addition to the same effect as the above-described second aspect, the strength of the folding panel in the folding box can be improved.
As a result, when the operation of lifting the foldable box so as to sandwich the pair of foldable panels from the outside of the outer container after assembling the third invention is repeated, deformation and breakage of the foldable box can be prevented. As a result, according to the third aspect, the durability of the foldable box can be improved.

According to the fourth invention, in addition to the same effects as those of the first to third inventions described above, the collapsible box of the foldable box is provided with the fixing auxiliary portion, so that the foldable box can be When carrying in a folded state, it is possible to prevent the fold located at the tip of the brim-shaped portion of the foldable box from being opened unintentionally.
Thus, when the folding box according to the fourth invention is carried in a folded state, it is possible to prevent the folding box from being in the middle of assembling or folding.
Therefore, according to the fourth aspect, it is possible to easily handle the foldable box in the folded state.

According to the fifth aspect, in addition to the same effects as those of the first to fourth aspects described above, when the folding operation and the assembling operation of the foldable box are repeated, the reproducibility at the time of forming the brim-shaped portion is improved. Can be increased. That is, it is possible to repeatedly form the collar portion having the same shape and size at a desired position on the first side surface of the outer container.
Therefore, according to the fifth aspect, the workability in folding the folding box can be improved.

According to the sixth aspect, in addition to the same effects as those of the first to fifth aspects, the tilting panel can be fixed inside the outer container during the assembling operation of the heat insulating container. . The tilting panel of the heat insulating container also functions as a stopper for preventing the bent panel from being unintentionally bent and falling when the bent panel is erected.
Therefore, according to the sixth aspect, it is possible to improve the shape retention of the foldable box after assembly.

According to the seventh aspect, the same effects as those of the first to sixth aspects are obtained. Further, in the seventh aspect, by providing the connection sheet, the orientation of the end face forming the second opening of the folding panel can be changed as desired when the folding box is folded or assembled.
This means that, when assembling the foldable box, the end face forming the second opening of the folding panel is disposed vertically upward, and when the foldable box is folded, the end face forming the second opening of the folding panel is changed. This means that they can be arranged horizontally.
As a result, in the seventh aspect, the bent panel can be folded while the edge of the bent panel of the heat insulating container on the second opening side is connected to the inner surface of the outer container.
In the seventh aspect, since the folding panel and the outer container are integrally connected via the connection sheet, the second side surface of the outer container may be folded in conjunction with the folding operation of the folding panel. it can.
As a result, according to the seventh aspect, the folding operation or the assembling operation of the bent panel and the folding operation or the restoring operation of the second side surface of the outer container can be performed simultaneously.
Thus, according to the seventh aspect, the number of steps required for the folding operation or the assembling operation can be reduced as compared with the case where the folding box does not include the connection sheet.

According to the eighth invention, in addition to the same effects as those of the first to seventh inventions described above, when stacking a plurality of foldable boxes, the connecting portions of the foldable boxes are connected in a horizontal direction. It is possible to prevent the displacement from occurring.
Therefore, according to the eighth invention, it is possible to provide a folding box that is hard to collapse even when a plurality of folding boxes are stacked.

  According to the ninth invention, in addition to the same effects as those of the first to eighth inventions described above, the temperature in the heat insulating container is suitably maintained by providing the folding box with the lid. In addition, the shape retention of the foldable box can be improved.

It is a perspective view showing the state (at the time of completion of assembling) of the folding type box concerning the embodiment of the present invention before folding. It is a perspective view showing step S1 (in the state where a pair of tilting panels were folded) in a folding procedure of a folding box concerning an embodiment of the present invention. It is a perspective view which shows step S2 (state in which the folding panel is folded) in the folding procedure of the folding box which concerns on embodiment of this invention. It is a perspective view which shows step S3 (state in which the collar part was fixed) in the folding procedure of the folding box which concerns on embodiment of this invention. FIG. 3A is a vertical cross-sectional view in a long side direction of the foldable box according to the embodiment of the present invention before folding (when assembly is completed), and FIG. 4B is a vertical cross-sectional view of the foldable box in a short side direction. FIG. (A) It is a vertical sectional view in the long side direction of step S1 in the foldable box which concerns on embodiment of this invention, (b) It is a vertical sectional view in the short side direction of the foldable box. (A) It is a vertical sectional view in the long side direction of step S2 in the foldable box which concerns on embodiment of this invention, (b) It is a vertical sectional view in the short side direction of the foldable box. (A) It is a vertical sectional view in the long side direction of the foldable box according to the embodiment of the present invention in the state where Step 2 is completed, and (b) is a vertical sectional view in the short side direction of the foldable box. . (A) It is a vertical sectional view in the long side direction of step S3 in the foldable box according to the embodiment of the present invention, and (b) is a vertical sectional view in the short side direction of the foldable box. FIG. 4 is a vertical cross-sectional view showing a state where the folding boxes according to the embodiment of the present invention are stacked. (A) It is a vertical sectional view in the long side direction in the case where the folding box according to the embodiment of the present invention has a lid, and (b) is a vertical sectional view in the short side direction of the folding box. It is a vertical direction sectional view in the short side direction of a foldable box concerning a modification of an embodiment of the present invention. (A), (b) is a vertical sectional view in the short side direction of a folding box according to another modification of the embodiment of the present invention.

  A folding box according to an embodiment of the present invention will be described in detail with reference to FIGS.

[Basic structure of folding box according to the present embodiment]
First, the structure of the foldable box according to the embodiment of the present invention will be described with reference to FIGS. 1 and 5.
FIG. 1 is a perspective view showing a state before folding (when assembly is completed) of a folding box according to an embodiment of the present invention. FIG. 5A is a vertical sectional view in the long side direction of the folding box according to the embodiment of the present invention, and FIG. 5B is a vertical sectional view in the short side direction of the folding box. More specifically, FIG. 5A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 5B is a cross-sectional view taken along line BB in FIG.
As shown in FIGS. 1 and 5, the foldable box 1A according to the present embodiment is mainly made of a sheet material 2b, has a first opening 2a at the top, and is a foldable hollow container-shaped outer container 2A. And a heat-insulating container 3 made of a plurality of thick plate members 8 and housed in the hollow portion of the outer container 2 and foldable.
As shown in FIGS. 1 and 5, the heat insulating container 3 is formed by integrally connecting a plurality of thick plate materials 8 having heat insulating properties, and when the heat insulating container 3 is assembled into a hollow container shape in the outer container 2. In addition, the first opening 2a of the outer container 2 and the second opening 3a of the heat insulating container 3 communicate with each other.
Further, the heat insulating container 3 has a bottom panel 3b, the tilting panel 3c _1, 3c ₂ forming a pair of side surfaces in the heat insulating container 3, a fold panel 3d forming the other pair of side surfaces in the heat insulating container 3, the 3d Have.

More specifically, as shown in FIGS. 1 and 5, the heat insulating container 3 is provided on a bottom panel 3b disposed on the bottom of the outer container 2 and a pair of short sides of the bottom panel 3b. includes a pair of tilt panel 3c _1, 3c ₂ which are arranged relative to each other, are erected on a pair of long sides of the bottom panel 3b, a pair of folding panel 3d that is disposed relative to each other, and 3d ing.
Furthermore, the tilting panel 3c _1, by tilting along the fold 4a, can be laminated on the bottom panel 3b (see Figure 7 in a subsequent stage). Further, the tilting panel 3c _2, by tilting along the fold 4b, can be laminated on the bottom panel 3b (see Figure 7 in a subsequent stage).
Therefore, in a state where the tilting panel 3c ₁ and tilting panel 3c ₂ on the bottom panel 3b are stacked (see Figure 2 in a subsequent stage) is tilted panel 3c _1, on the bottom panel 3b in the order of the tilting panel 3c ₂ Need to be tilted.
In addition, the pair of bent panels 3d, 3d have folds 4c, 4d arranged in the horizontal direction. Then, by folding the bent panels 3d, 3d at the folds 4c, 4d, the pair of folded panels 3d, 3d can be stacked on the bottom panel 3b in a state of being folded in two (see FIG. 9 in a later stage). See).

Incidentally, the tilting panel _3c 1, 3c ₂ and folding panel 3d in the adiabatic vessel 3, 3d are constituted by thick plates 8 none. Thus, the creases 4b and folds 4d other than folds 4a, when provided in the same vertical height as the short side or the long side on the upper surface of the panel 3b, the tilting panel 3c 1 thick plates 8 each other _interfere, 3c ₂ In addition, the folded panels 3d, 3d cannot be laminated properly.
In view of such circumstances, the heat insulating container 3 according to the present embodiment, as shown in FIG. 5 (a), the pedestal panel 3e ₁ to the short side of the side where the tilting panel 3c ₂ of the bottom panel 3 are arranged provided, and placing the tilting panel 3c ₂ on the pedestal panel 3e _1. In this case, the boundary of the base panel 3e ₁ and tilting the panel 3c ₂ is crease 4b.
In this case, the vertical height of the folds 4b, based on the upper surface of the bottom panel 3b, the thickness of only the tilting panel 3c ₁ can be positioned vertically upward. As a result, when the tilt panels 3c ₁ and 3c ₂ are tilted on the bottom panel 3b in this order, the tilt panels 3c ₁ and 3c ₂ can be stacked on the bottom panel 3b in this order.

Further, in the heat insulating container 3 according to the present embodiment, at the time of folding operation, the pair of folding panel 3d on the tilting panel 3c _2, so that 3d are stacked.
For this reason the heat insulating container 3, when causing stacked folding panel 3d, and 3d on the tilting panel 3c _2, the tilting panel _3c 1, 3c ₂ and folding panel 3d, and the 3d keep devised so as not to interfere with each other You also need.
Therefore, in the heat insulating container 3 according to the present embodiment, the long side of the folding panel 3d, 3d is arranged at the bottom panel 3b, which corresponds to a value obtained by summing the thickness of each of the tilting panel 3c _1, 3c ₂ the base panel _3e 2, 3e ₂ having a height provided, and placing the bent panels 3d on the pedestal panel 3e _2. In this case, the boundary is next crease 4d of the base panel 3e ₂ and folding panel 3d, crease for enabling clamshell a folding panel 3d itself in the horizontal direction is fold 4c.
In this case, the vertical height of the folds 4d, based on the upper surface of the bottom panel 3b, only the value amount obtained by summing the thickness of each of the tilting panel 3c ₁ and tilting panel 3c ₂ can be positioned vertically upward . As a result, when stacking while folding panel 3d, 3d and folded into two on the tilting panel 3c _2, the tilting panel _3c 1, 3c ₂ and the second side surface 2d, and the 2d be prevented from interfering be able to.

Further, the folding box 1A according to this embodiment, the first side surface 2c of the outer container 2 that is arranged facing the respective tilting panel 3c _1, 3c ₂ in the heat insulating container 3 as described above, 2c, and the second side surfaces 2d, 2d of the outer container 2 are arranged facing the pair of bent panels 3d, 3d, respectively.

Further, in the foldable box 1A according to the present embodiment, as shown in FIGS. 1 and 5, the outer container 2 and the heat insulating container 3 are connected via a connection sheet 7 made of a flexible sheet material.
More specifically, a connection sheet 7 is interposed between the edge of the bent panel 3 d forming the second opening 3 a in the heat insulating container 3 and the inner surface of the outer container 2 on the first opening 2 a side. Have been.
1 and 5, the connection sheet 7 covers the entire "end face" forming the second opening 3a of the bent panels 3d, 3d, and the connection sheet 7 is joined to this "end face". Not necessarily.
That is, one end 7a of the connection sheet 7 is connected to the inside of the first opening 2a of the outer container 2 via the fourth fixing structure 11 described later, and the other end of the connection sheet 7 7b is connected to the "edge" which forms the second opening 3a of the bent panel 3d. The reason will be described later in detail.

  In addition, the foldable box 1A according to the present embodiment includes a pair of first fixing structures 5 for holding the folded state of the foldable box 1A on the first side surfaces 2c, 2c of the outer container 2. There are two sets.

[Folding procedure of folding box according to this embodiment]
Next, a procedure for folding the foldable box 1A according to the present embodiment will be described in detail with reference to FIGS.
FIG. 2 to FIG. 4 are perspective views showing states of respective steps when folding the foldable box according to the embodiment of the present invention. FIGS. 5A to 9A are vertical cross-sectional views in the long side direction at each step when the folding box according to the embodiment of the present invention is folded, and FIGS. () Is a vertical sectional view in the short side direction of the folding box. The same parts as those shown in FIGS. 1 and 5 are denoted by the same reference numerals, and the description of the configuration will be omitted.
FIGS. 1 and 5 show a state before folding the foldable box 1A according to the present embodiment.

Then, folding the folding box 1A according to this embodiment from the state shown in FIGS. 1 and 5, first, as shown in FIG. 2 and 6, the tilting panel 3c ₁ which is erected on the outer container 2 the 3c _2, is tilted on the bottom panel 3b side in this order, are stacked on the bottom panel 3b (step S1).
At this time, the heat insulating container 3 according to the present embodiment is provided with a pedestal panel 3e _1, when tilting the tilting panel 3c _2, the tilting panel 3c ₂ is prevented from interfering with the tilting panel 3c ₁ be able to.
As a result, the tilting panels 3c ₁ and 3c ₂ can be stacked on the bottom panel 3b while keeping the respective planar directions substantially horizontal.

Next, when the first opening 2a of the foldable box 1A according to the present embodiment is pushed vertically downward from the state of step S1 shown in FIGS. 2 and 6, FIG. 7B and FIG. as shown, a pair of folding panel 3d, 3d is folded in the fold 4c and folds 4d, it is laminated on the tilting panel 3c ₂ (step S2).
At this time, the folded panel 3d is in a state of being folded in two along the fold line 4c formed in the horizontal direction.
In conjunction with the bending operation of the bent panels 3d, as shown in FIGS. 7 (b) and 8 (b), they are arranged facing the pair of bent panels 3d. The second side surfaces 2d, 2d of the outer container 2 are folded so as to be sandwiched between the valley fold portions of the pair of folding panels 3d, 3d (see FIG. 3).
Further, in this step S2, in conjunction with the bending operation of the bending panels 3d, 3d, as shown in FIGS. Then, it is mountain-folded in a direction away from the heat insulating container 3 to form the brim portions 2f, 2f.
In the foldable box 1A according to this embodiment, the outer container 2 and the bent panels 3d of the heat insulating container 3 are connected via the connection sheet 7 as described above. For this reason, as shown in FIGS. 7B and 8B, when the folding panels 3 d, 3 d are bent, the bent panel 3 d forming the second opening 3 a with respect to the inner surface of the outer container 2. , 3d can be changed as desired.
As a result, the operation of folding the second side surface 2d of the outer container 2 into the valley-folded portion of the folding panel 3d and the operation of forming the flange portions 2f, 2f on the first side surface 2c of the outer container 2 are performed by folding. Simultaneous operation can be performed in conjunction with the folding operation of the bending panels 3d.

Then, step S3 after step S2 is a process for maintaining the folded state of the foldable box 1A according to the present embodiment.
Immediately after completing Step 2, in the foldable box 1A according to the present embodiment, as shown in FIGS. 3, 7A and 8A, the first side surface 2c of the outer container 2 has a brim-like shape. A portion 2f is formed.
As shown in FIGS. 3, 7A and 8A, in the foldable box 1A according to the present embodiment, each first side surface 2c of the outer container 2 is a pair of first side walls 2c. A fixing structure 5 is provided.
Further, one of the pair of first fixing structures 5 on each first side surface 2c is provided on a vertically lower surface of the flange portion 2f, and the other is provided on the lower surface of the flange portion 2f. The first fixing structure 5 is provided on the first side surface 2 c at a position where the first fixing structure 5 comes into contact with the first fixing structure 5 when it is turned.

Then, as shown in FIG. 8 (a), when the brim-like portion 2f protruding on the outer side surface of the outer container 2 is rotated in the direction indicated by the symbol P in FIG. As shown in FIG. 9A, the pair of first fixing structures 5 and 5 come into contact with each other to be integrated.
As a result, the collar portion 2f can be detachably fixed on the first side surface 2c of the outer container 2 in a folded state. FIG. 4 is a perspective view showing a state in which the collar portion 2f is detachably fixed on the first side surface 2c of the outer container 2.
In this way, the foldable box 1A according to the present embodiment retains the folded state by fixing the collar portion 2f of the outer container 2 on the first side surface 2c by the first fixing structure 5 in step S3. can do.
Further, in the foldable box 1A according to the present embodiment, in a state where the brim portion 2f is fixed to the first side face 2c, the foldable box 1A is lifted by grasping the first opening 2a of the outer container 2. Also, the connection state of the pair of first fixing structures 5 is not released.
Therefore, when the folding box 1A according to the present embodiment is carried in a folded state, the folding state of the folding box 1A can be suitably maintained.

[Assembly procedure of foldable box according to this embodiment]
As shown in FIGS. 4 and 9, when assembling the foldable box 1A in which the foldable state is fixed, steps S1 to S3 described above may be performed in reverse order.
More specifically, first, fingers are hooked on the lower ends of the flange-shaped portions 2f, 2f of the folding box 1A according to the present embodiment in the state shown in FIGS. The first side surface 2c is rotated so as to be peeled off from the first side surface 2c (the direction opposite to the direction indicated by the symbol P in FIG. 8A). By this operation, the connection state of the pair of first fixed structures 5 can be released (corresponding to step S3).
Thereafter, by pulling up the first opening 2a of the foldable box 1A according to the present embodiment vertically upward, as shown in FIGS. 7 (a) and 7 (b), the folded outer container 2 is removed. It is restored to a hollow container shape. Also, in conjunction with this operation, folding which has been folded over the tilting panel 3c ₂ bent panel 3d, 3d is lifted vertically upward, bent on the second side surface 2d side of the outer container 2 panel 3d , 3d stand up (corresponding to step S2, see FIG. 6).
Lastly, the tilting panels 3c ₂ and 3c ₁ stacked on the bottom panel 3b in the hollow portion of the outer container 2 are raised and raised on the first side surface 2c side in this order, and as shown in FIGS. as shown, the end face which is disposed horizontally side of the tilting panel 3c _2, 3c _1, second side surface 2d, (corresponding to step S1) by fold 4c of 2d is supported, folded according to this embodiment The assembling operation of the expression box 1A is completed.

[Effects of the foldable box according to the present embodiment]
According to the folding box 1A according to the present embodiment as described above, the folding operation or the assembling operation can be completed in a minimum of three steps.
Therefore, according to the foldable box 1A according to the present embodiment, it is possible to provide a foldable box that can easily and quickly perform a folding operation or an assembling operation of the heat insulating container 3 made of the thick plate material 8.
Further, in the folding box 1A according to the present embodiment, a part of the first side surface 2c of the outer container 2 can be deformed into the collar portion 2f during the folding operation. The flange 2f can be used as a fixture for holding the folding box 1A in the folded state.
For this reason, in the foldable box 1A according to the present embodiment, there is no need to separately provide a configuration such as a band in order to maintain the folded state. Therefore, the structure of the foldable box 1A according to the present embodiment can be simplified.
Further, according to the foldable box 1A according to the present embodiment, since the foldable box 1A can be kept in a folded state, it is easy to handle the foldable box 1A when it is folded and carried. It also has the effect that it can be done.
Further, in the folding box 1A according to the present embodiment, the collar portion 2f can be automatically formed in the course of the folding operation. In addition, the operation of releasing the fixed state of the collar portion 2f can be performed as a part of the operation of assembling the foldable box 1A.
As described above, the folding box 1A according to the present embodiment does not need to perform the operation for releasing the folded state separately from the assembling operation of the folding box 1A. The effect that can be done is exhibited.

Further, in the foldable box 1A according to the present embodiment, as shown in FIGS. 1 to 9, the inner surface of the outer container 2 and the bent panels 3d, 3d are connected via the connection sheet 7. Thus, the bending operation of the bending panels 3d, 3d can be performed while the outer container 2 and the bending panels 3d, 3d are connected.
That is, in the folding box 1A according to the present embodiment, as shown in each of FIGS. 5B to 8B, the connection box 7 is provided so that the inner surface of the outer container 2 The angle between the end faces of the bent panels 3d, 3d forming the two openings 3a can be changed as desired.
As a result, the folding operation of the folding panels 3d, 3d and the operation of folding the second side surface 2d of the outer container 2 into the valley-folding portions of the folding panels 3d, 3d [see FIGS. 7B and 8B] 3) and an operation of transforming a part of the first side surface 2c of the outer container 2 into a brim-like portion 2f [see FIGS. 7 (a) and 8 (a)]. .
Therefore, according to the foldable box 1A according to the present embodiment including the connection sheet 7, the folding operation and the assembling operation of the foldable box 1A can be performed quickly and smoothly.

Note that the foldable box 1A according to the present embodiment does not necessarily need to include the connection sheet 7. More specifically, the bent panels 3d, 3d may be directly provided on the inner surface of the outer container 2.
In this case, the angle formed by the end surface forming the second opening 3a of the bent panel 3d with respect to the inner surface of the outer container 2 cannot be changed as desired. Therefore, in such a foldable box 1A, the thickness in the vertical direction of the folded panel 3d folded in two at the fold line 4c is larger than that shown in FIG. 8B. That is, the height of the folding box 1A in the vertical direction when the folding operation is completed is larger than that in the case where the connecting sheet 7 is provided.
Therefore, when the foldable box 1A according to the present embodiment does not include the connection sheet 7, although part of the effect of making the foldable box 1A compact when folded is partially impaired, the present invention is implemented. There is no particular problem.

[Selective components of the folding box according to the present embodiment]
Here, optional components of the foldable box 1A according to the present embodiment will be described. Further, each optional component of the foldable box 1A according to the present embodiment described here may be independently added to the basic configuration of the foldable box 1A described above, or a desired optional component may be added. A plurality of combinations may be added.

As shown in FIGS. 2 to 9, the foldable box 1 </ b> A according to the present embodiment includes tilting panels 3 c ₁ and 3 c ₂ erected in the hollow portion of the outer container 2 on the inner surface of the outer container 2. A second fixing structure 6 for detachably fixing may be provided (optional component).
As the second fixing structure 6, a pair of a structure provided on the tilt panel 3 c ₁ side or the tilt panel 3 c ₂ side and a structure provided on the inner surface side of the first side surface 2 c of the outer container 2 are used. Therefore, the foldable box 1A according to the present embodiment includes two pairs of the second fixing structures 6.
In the foldable box 1 </ b> A according to the present embodiment, the inner dimensions of the outer container 2 are designed to substantially match the outer dimensions of the heat insulating container 3. Thus, the assembled state of the foldable box 1A can be maintained without the second fixing structure 6.
However, when the folding box 1A does not have the second fixed structure 6, from outside the folding box 1A, these hollow portion side of the outer container 2 with respect to the tilting panel 3c ₁ or tilting panel 3c ₂ when an external force, such as pushing down is applied, there is a possibility that unintentionally, the tilting panel 3c ₁ or tilting panel 3c ₂ thus tilted.
Further, the tilting panel 3c ₁ and tilting panel 3c ₂ also functions as a stopper for maintaining the folding panel 3d, a standing condition of the 3d. Therefore, when the tilt panel 3c ₁ or tilting panel 3c ₂ will be tilted to the bottom panel 3b side unintentionally, folding panel 3d, 3d will not be able to be kept to maintain its upright state losing support As a result, the assembled state of the foldable box 1A cannot be maintained.
In contrast, when folding box 1A according to the present embodiment if provided with a second fixing structure 6, an external force such as to push down the tilting panel 3c ₁ or tilting panel 3c ₂ is applied, unintended It is possible to prevent the external shape of the foldable box 1A from being collapsed.
Therefore, when the foldable box 1A according to the present embodiment includes the second fixing structure 6, there is an effect that the shape retention of the foldable box 1A during use can be improved.

The foldable box 1A according to the present embodiment may have the thick portion 18 for promoting the formation of the brim portion 2f on the first side surface 2c of the outer container 2 during the folding operation of the foldable box 1A. Good (optional component).
In addition, as shown in FIG. 2, for example, as shown in FIG. 2, the thick portion 18 on the first side surface 2c adheres another foldable sheet material (for example, a backing material 17) to the back surface side of the first side surface 2c. Alternatively, it may be formed by sewing. Alternatively, this thick portion may be formed by changing the thickness (not shown) of the sheet material 2b itself constituting the first side surface 2c.
When the first side surface 2c is provided with such a thick portion 18 (for example, the backing material 17 or the like), along the boundary 18a of the thick portion 18 during the folding operation of the foldable box 1A. A fold can be formed on a line connecting the vertices 18b formed on the boundary 18a.
In this case, when the folding operation or the assembling operation of the foldable box 1A according to the present embodiment is repeated, the reproducibility of the outer shape and the size of the collar portion 2f can be improved.
Therefore, when the first side surface 2c of the outer container 2 includes the thick portion 18, the folding operation of the foldable box 1A according to the present embodiment can be performed quickly and reliably. As a result, there is an effect that the folding operation of the folding box 1A according to the present embodiment can be performed efficiently.

The foldable box 1A according to the present embodiment may include a handle 16 on the first opening 2a side of the first side surface 2c of the outer container 2 (optional component).
In this case, during a series of assembling operations of the above-described folding box 1A according to the present embodiment, after the fixing state of the collar portion 2f by the first fixing structure 5 is released, the folding box 1 An operation of pulling up the first opening 2a of 1A vertically upward can be performed.
Further, the handle 16 is provided directly above the flange 2f. For this reason, as shown in FIG. 9A, an operation is performed when the lower end of the brim-shaped portion 2f bent vertically downward is horizontally oriented as shown in FIG. 8A. It is only necessary to move the person's hand to the handle 16 on the vertically upper side as it is. In this case, the first opening 2a of the outer container 2 can be easily pulled vertically upward using the handle 16.
Therefore, since the foldable box 1A according to the present embodiment includes the above-described handle 16, the assembling work of the foldable box 1A is performed more quickly and smoothly as compared with a case where the handle 16 is not provided. be able to.
Such a handle 16 is also convenient when carrying the foldable box 1A.

As shown in FIGS. 5 to 9, the foldable box 1 </ b> A according to the present embodiment has, on the outer surface of the bottom surface 2 e of the outer container 2, the same or the same planar size as the second opening 3 a of the heat insulating container 3. May be provided with a stacking panel 9 having a planar dimension obtained by subtracting a clearance from the stacking (optional component).
FIG. 10 is a vertical sectional view showing a state in which the folding boxes according to the present embodiment of the present invention are stacked. The same parts as those shown in FIGS. 1 to 9 are denoted by the same reference numerals, and the description of the configuration will be omitted.
When the foldable box 1A provided with the stacking panel 9 is vertically stacked, as shown in FIG. 10, the stacking panel 9 of the foldable box 1A disposed vertically above is disposed immediately below the foldable box 1A. To be inserted into the second opening 3a of the heat insulating container 3 of the folding box 1A. Further, at this time, the overlapping portion of the bottom panel 3b of the heat insulating container 3 and the bottom surface 2e of the outer container 2 in the foldable box 1A arranged vertically above is fitted into the first opening 2a of the outer container 2, It functions as a lid of the foldable box 1A disposed vertically below.
In the foldable box 1A according to the present embodiment, the outer container 2 is made of a foldable sheet material 2b. For this reason, when the foldable boxes 1A without the stacking panel 9 are vertically stacked, when a horizontal external force acts on the stacked foldable boxes 1A, the foldable boxes 1A are connected. The portion easily shifts in position, and in the worst case, the folding box 1A group collapses.
On the other hand, when the foldable box 1A according to the present embodiment includes the stacking panel 9, the stacking panel 9 of the foldable box 1A disposed vertically above is disposed in the foldable box 1A. Since the second container 3 is fitted into the second opening 3a of the heat insulating container 3 of the box 1A, the heat insulating containers 3 having higher rigidity than the outer container 2 are directly connected to each other. Therefore, it is possible to prevent a horizontal displacement from occurring at a connection portion between the foldable boxes 1A.
Therefore, when the foldable box 1A according to the present embodiment includes the stacking panel 9, it is possible to provide a foldable box that does not easily collapse when stacked in the vertical direction.

FIG. 11A is a vertical cross-sectional view in the long side direction when the folding box according to the embodiment of the present invention has a lid, and FIG. 11B is a vertical cross section in the short side direction of the folding box. FIG. The same parts as those shown in FIGS. 1 to 10 are denoted by the same reference numerals, and the description of the configuration will be omitted.
The foldable box 1A according to the present embodiment may include a lid 14 as shown in FIGS. 11A and 11B (optional components).
In this case, as shown in, for example, 11 (a) and (b), the lid body 14 has a lid panel 12 having the same plane dimension as the bottom plane of the heat insulating container 3 or a plane dimension obtained by subtracting a clearance from this plane dimension. A third fixing structure 10 for detachably fixing the lid panel 12 to a communication port between the first opening 2a and the second opening 3a may be provided.

11 (a) and 11 (b), a sheet material 13 which is slightly larger than the plane size of the cover panel 12 is integrally provided on the upper surface of the cover panel 12, and the sheet materials 13 A third fixing structure 10 (one of the pair of third fixing structures 10) may be provided along a pair of edges arranged opposite to each other. Note that the sheet material 13 is an optional component of the lid 14.
When the foldable box 1A according to the present embodiment includes the lid 14, as shown in FIG. 11B, a third fixing structure 10 for fixing the lid 14 to the foldable box 1A. When the other is placed on the outside surface of the outer container 2 and the lid 14 is covered by the communication opening of the first opening 2a and the second opening 3a, the above-mentioned one third fixing structure 10 It may be provided at a position where the overlapping portion is formed.
Since the foldable box 1A according to the present embodiment is provided with the lid 14 as described above, it is possible to improve the heat retention when storing and carrying articles in the foldable box 1A. In addition, since the folding box 1A according to the present embodiment includes the lid 14, the strength of the folding box 1A as a whole can be improved, thereby preventing the assembled state of the folding box 1A from being damaged during transportation. You can also.
The planar dimensions of the lid panel 12, FIG. 11 (a), (b) shown in the same rectangular planar dimension consisting of the long side dimension Q _1, the short side dimension Q ₂ of the bottom surface of the heat insulating container 3 It is. The planar dimensions of the lid panel 12 may be a rectangular plane dimension minus a clearance from the respective long side dimension Q _1, the short side dimension Q _2.

In addition to the above-described configuration, the lid 14 according to the present embodiment is provided on the surface of the lid panel 12 disposed on the hollow side of the heat insulating container 3 as shown in FIGS. 11 (a) and 11 (b). (The stacking panel 9 is an optional component of the lid 14).
When the lid 14 includes the stacking panel 9, the plane dimension of the stacking panel 9 is the same as the plane dimension of the second opening 3 a of the heat insulating container 3 or the plane dimension obtained by subtracting the clearance from the plane dimension. What should I do?
When the lid 14 is provided with the stacking panel 9 as described above, the lid when the lid 14 is covered over the communication opening between the first opening 2a and the second opening 3a in the foldable box 1A. Horizontal displacement of the body 14 can be suitably prevented.
In this case, the airtightness in the foldable box 1A provided with the lid 14 having the stacking panel 9 can be improved. This makes it possible to enhance the heat retention (insulation) when storing and transporting articles in the foldable box 1A.

FIG. 12 is a vertical sectional view in a short side direction of a folding box according to a modification of the embodiment of the present invention. The same parts as those shown in FIGS. 1 to 11 are denoted by the same reference numerals, and the description of the configuration will be omitted.
In the heat insulating container 3 in the folding box 1A, since the folded panel 3d has the fold 4c formed in the middle in the middle, the strength of the folded panel 3d is higher than that of the thick plate material 8 without the fold 4c. Decrease.
In this case, when the folding box 1A is moved using an industrial robot or the like after assembly, the operation of holding the pair of folding panels 3d from the second side 2d side of the folding box 1A is repeated. In addition, there is a problem that the bent panel 3d is easily damaged.
In order to deal with such a problem, the folding box 1B according to the modification of the present embodiment may use a bent panel 3d 'provided with a reinforcing member 15 along the fold line 4c as shown in FIG. (Optional component).
In addition, as the reinforcing material 15 of the bent panel 3d ', for example, an angle material having a L-shaped cross section made of metal or rigid resin can be used.
Further, when an angle member having an L-shaped cross section as shown in FIG. 12 is used as the reinforcing member 15, for example, the corners of the thick plate members 8, 8 which are arranged opposite to each other with the fold line 4c interposed therebetween are cut into the cross section L. It is preferable to protect by covering with a letter-shaped angle material.
The reinforcing member 15 may be an angle member having a U-shaped cross section (not shown) instead of the angle member having an L-shaped cross section as shown in FIG. 12, or the bent panel 3d '. By simply adhering a metal or synthetic resin flat plate (not shown) to the outer surface along the fold line 4c, a sufficient effect of improving the strength of the bent panel 3d 'can be expected.
When the heat insulating container 3 is provided with the bent panel 3d 'having such a reinforcing member 15, the present embodiment is carried out so as to sandwich the pair of bent panels 3d' and 3d 'from the outside of the heat insulating container 3. When carrying the foldable box 1B according to the modification of the embodiment, there is an effect that the foldable box 1B can be prevented from being damaged.

As shown in FIGS. 5 to 9 and FIGS. 11 and 12, the foldable boxes 1A and 1B according to the present embodiment and its modified example have a bent panel 3d or a bent panel 3d on the inner surface of the outer container 2. When the ′ is installed directly or via the connection sheet 7, the connection portion may be provided with a fourth fixing structure 11 that is detachable (optional component).
The fourth fixing structure 11 is used in a state where one provided on the bent panel 3d side and the other provided on the outer container 2 make a pair.
Further, in the folding boxes 1A and 1B according to the present embodiment and the modified examples thereof, the provision of the fourth fixing structure 11 allows the heat insulating container 3 to be detachably attached to the outer container 2. can do.
In this case, the outer container 2 and the heat insulating container 3 are separately manufactured, and finally, the outer container 2 and the heat insulating container 3 are integrated via the fourth fixing structure 11 to easily implement the present embodiment and its deformation. The folding boxes 1A and 1B according to the example can be manufactured.
In the event that either the outer container 2 or the heat insulating container 3 is damaged, these can be separated and the damaged one can be replaced with a new one.
Therefore, according to the foldable boxes 1A and 1B according to the present embodiment including the fourth fixing structure 11 as described above and the modified example thereof, the productivity can be improved at the time of manufacturing, and the foldable boxes 1A and 1B are damaged. This has the effect that it can be used continuously while exchanging parts.

In the foldable boxes 1A and 1B according to the present embodiment and its modified examples, the thick plate material 8 forming the heat insulating container 3 and the cover panel 12 of the cover 14 does not interfere with the conventionally known heat insulating material (foam resin molded body or the like). Can be used without.
Further, the heat insulating container 3 of the foldable boxes 1A and 1B according to the present embodiment and the modified examples thereof may use the thick plate material 8 made of the above-described material alone or the surface of such a thick plate material 8. A heat insulating and / or waterproof sheet material (not shown) may be separately added to a desired part (for example, a surface forming the inside of the hollow container) (optional component).
In this case, the thermal insulation and / or waterproofness of the foldable boxes 1A and 1B according to the present embodiment and its modifications can be further improved.

In the heat insulating container 3 of the foldable boxes 1A and 1B according to the present embodiment and its modified example, the plurality of thick plate members 8 are connected by using a connecting member (a sheet body or the like) or a connecting tool (a hinge or the like) not shown. (Optional component).
Alternatively, the bag members may be formed from a heat-insulating sheet material, the thick plate members 8 may be housed in the bag members, and the bag members may be connected to each other to connect the thick plate members 8 to each other (selective configuration). element).
In any case, there is an effect that the relatively thick plate 8 can be connected easily and without a large change in size.

  Note that the first to fourth fixing structures 5, 6, 10, and 11 in the folding boxes 1A and 1B according to the present embodiment and the modifications thereof are configured such that the other can be detachably fixed to one of them. Any configuration may be used. As the first to fourth fixing structures 5, 6, 10, and 11, a hook-and-loop fastener and a snap button are particularly suitable. In addition, a hooking structure including a hook and a loop, a hooking structure including a button and a buttonhole, a wire fastener, a snap lock, or the like can be used alone or in a desired combination.

Finally, a foldable box according to another modification of the present embodiment will be described with reference to FIG.
FIGS. 13A and 13B are vertical sectional views in the short side direction of a folding box according to another modification of the embodiment of the present invention. More specifically, FIG. 13A is a vertical cross-sectional view showing a state in which a brim-shaped portion is formed on a first side surface of a folding box according to another modification of the present embodiment, FIG. 2B is a vertical sectional view showing a state in which the brim-shaped portion is fixed to the first side surface of the folding box. The same parts as those shown in FIGS. 1 to 12 are denoted by the same reference numerals, and the description of the configuration will be omitted.
For example, when the hook-and-loop fastener is used as the first fixing structure 5 in the foldable boxes 1A and 1B according to the above-described embodiment and its modified example, and the outer container 2 is made of a relatively hard material, In the case where the heat insulating container 3 is relatively heavy, when the flange 2f is fixed to the first side surface 2c by the first fixing structure 5, the first opening 2a or the handle 16 is grasped and lifted. In some cases, the fixed state of the first fixing structure 5 is unintentionally released.
In this case, the folding boxes 1A and 1B being moved are in a state of being folded or being assembled (for example, see FIGS. 7 and 8), and the folding boxes 1A and 1B are carried in a compact state. There was a problem that it was not possible.

When the inventors initially bent and fixed the brim-like portion 2f to the first side surface 2c side (see FIG. 9), it was installed at the overlapping portion of the first side surface 2c and the brim-like portion 2f. An attempt was made to solve the above problem by increasing the area of the first fixed structure 5.
However, in the above-described improvement, it is possible to prevent the folds from being opened unintentionally when a force is applied to open the fold located at the tip of the brim portion 2f in the foldable boxes 1A and 1B. could not.
In view of such circumstances, as a result of intensive research, the inventors have found that, as shown in FIG. 13A, the tip of the brim-shaped portion 2 f ′ of the folding box 1 </ b> C according to another modification of the present embodiment is The above-mentioned problem is solved by extending the tongue-shaped fixing auxiliary portion 19 and providing the first fixing structure 5 only on the fixing auxiliary portion 19 or on both the fixing auxiliary portion 19 and the brim-shaped portion 2f '. Settled.

More specifically, in a foldable box 1C according to another modified example shown in FIGS. 13A and 13B, the brim-like portion 2f 'is provided with a tongue-like fixing auxiliary portion 19 at the tip. Thus, the first fixing structure 5 can be arranged at a position slightly away from the fold located at the tip of the brim-shaped portion 2f '.
As described above, when the folding box 1C according to another modification of the present embodiment is folded and the first opening 2a or the handle 16 is grasped and lifted, the box is folded. A force acts on the fold located at the tip of the brim portion 2f 'so as to open (open) the fold.
At this time, if the fold located at the end of the brim-shaped portion 2f 'is opened, the folded state of the outer container 2 is released, and the folded outer container 2 is in the state of being assembled or folded (FIG. 7 and 8).
This means that when the folding box 1C according to another modification of the present embodiment is carried in a folded state, the fold located at the tip of the brim-shaped portion 2f 'is not opened (if it does not spread). This means that the folded state of the foldable box 1C is not released.

In the foldable box 1C according to another modification of the present embodiment, the first fixing structure 5 is arranged at a position slightly away from the fold located at the tip of the brim-shaped portion 2f '. As shown in FIG. 13 (b), when the first fixing structure 5 is joined to and integrated with another pair of first fixing structures 5 provided on the first side surface 2c, a flange is formed. Opening of the fold located at the tip of the shape 2f 'can be reliably prevented.
Therefore, according to the foldable box 1C according to another modification of the present embodiment, when the foldable box 1C is moved while being folded, the fixed state of the first fixing structure 5 can be maintained. .
As a result, according to the foldable box 1C according to another modification of the present embodiment, it is possible to provide a foldable box that can be easily handled in a folded state.

FIG. 13A illustrates an example in which the fixing auxiliary portion 19 is provided vertically below the brim-shaped portion 2f ′ that protrudes in the horizontal direction. It may be installed vertically above the brim-shaped portion 2f '.
However, in this case, as shown in FIGS. 13A and 13B, the first fixing structure 5 cannot be installed so as to straddle the brim-shaped portion 2f 'and the fixing auxiliary portion 19. For this reason, although it is necessary to separately install the first fixing structure 5 on each of the brim-shaped portion 2f 'and the fixing auxiliary portion 19 (not shown), when using the first fixing structure 5, these first fixing structures 5 It functions as an integral first fixing structure 5.

Furthermore, if the first fixing structure 5 is installed in the entire area of the fixing auxiliary portion 19 extending from the tip of the brim-shaped portion 2f ', the work of attaching and detaching the pair of first fixing structures 5 can be performed smoothly. Can not be performed.
For this reason, in the foldable box 1C according to another modification of the present embodiment, as shown in FIGS. 13A and 13B, the fixing auxiliary portion 19 is provided at the end not connected to the brim-shaped portion 2f '. It may have a knob 19a without the first fixing structure 5 on the part side (optional component).
In this case, it is possible to smoothly and easily perform the work of attaching and detaching the pair of first fixing structures 5 and the work of attaching and detaching the brim-shaped portion 2f '.

[Supplement]
Further, the sheet material 2b in the folding boxes 1A to 1C according to the present embodiment and the modifications thereof, and the sheet material 13 forming the lid 14 are made of folding boxes 1A to 1A as long as they are foldable sheet materials. It may be freely selected according to the purpose of use of 1C.
More specifically, the sheet material 2b or the sheet material 13 may be a woven or knitted fabric made of artificial or natural fibers, or a nonwoven fabric, or may be a synthetic resin formed into a sheet. Alternatively, a sheet material obtained by appropriately combining these may be used.
In the case where the outer container 2 according to the foldable boxes 1A to 1C according to the present embodiment and the modified example thereof and the lid 14 are partially made of a foldable sheet material, sewing is employed as a forming means thereof. can do.
In this case, there is no need to use a mold or the like when molding the outer container 2. Also, there is no need to prepare a large-scale press device or the like as in the case where the sheet members are pressure-bonded by heat and pressure. Therefore, when the sheet material forming means is sewing, there is an advantage that the production cost of the product can be reduced when the folding boxes 1A to 1C of various sizes are produced little by little.

  As described above, the present invention relates to a foldable box that can be compactly folded when not in use, and that can quickly and smoothly perform the folding work and the assembling work. Available at

1A, 1B, 1C ... Folding box 2 ... Outer container 2a ... First opening 2b ... Sheet material 2c ... First side surface 2d ... Second side surface 2e ... Bottom surface 2f, 2f '... Collar portion 3 ... Insulated container 3a ... second opening 3b ... bottom panel 3c _1, 3c 2 _... tilting panel 3d, 3d' ... folding panel 3e _1, 3e 2 _... pedestal panels 4a, 4b, 4c, 4d ... it folds 5 ... first fixing structure Reference Signs List 6 second fixing structure 7 connecting sheet 7a one end 7b other end 8 thick plate 9 stacking panel 10 third fixing structure 11 fourth fixing structure 12 lid panel DESCRIPTION OF SYMBOLS 13 ... Sheet material 14 ... Lid 15 ... Reinforcement material 16 ... Handle 17 ... Backing material 18 ... Thick part 18a ... Boundary 18b ... Vertex 19 ... Fixing auxiliary part 19a ... Knob part

Claims (9)

An outer container made of a sheet material and provided with a first opening at an upper portion and being foldable, and made of a plurality of thick plate materials and provided with a second opening at an upper portion and housed in the outer container and folded In a storage box comprising a possible insulated container,
The heat insulating container includes a bottom panel, a pair of tilting panels forming a side surface of the heat insulating container, and a pair of bent panels forming a side surface of the heat insulating container,
The outer container is arranged to face the pair of tilting panels, and when folding the heat-insulating container, a first side surface that is mountain-folded in a direction away from the heat-insulating container to form a brim-shaped portion; A second side facing the folded panel;
The collapsible box is provided with a first fixing structure for fixing the collar portion in a state where the collar portion is bent toward the bottom panel. An outer container made of a sheet material and provided with a first opening at an upper portion and being foldable, and made of a plurality of thick plate materials and provided with a second opening at an upper portion and housed in the outer container and folded In a storage box comprising a possible insulated container,
The heat insulating container is provided with a bottom panel, a pair of tilt panels provided to be tiltable on the bottom panel, and arranged to face each other, and stacked on the pair of tilt panels at the time of folding, and horizontally at the time of folding. A pair of folded panels that are folded along folds that are arranged in the direction, and that are arranged opposite to each other,
The outer container is arranged to face the pair of tilting panels, and when folding the heat-insulating container, a first side surface that is mountain-folded in a direction away from the heat-insulating container to form a brim-shaped portion; A second side surface that is disposed facing the folding panel, and that is folded into a valley-folding portion of the folding panel when the heat-insulating container is folded,
The collapsible box is provided with a first fixing structure for fixing the collar portion in a state where the collar portion is bent toward the bottom panel.   The foldable box according to claim 2, wherein the folding panel includes a reinforcing member arranged along the fold. The collar further includes a tongue-like fixing auxiliary portion extending at a tip of the collar,
The said 1st fixing structure is provided only in the said fixing | assistant auxiliary part instead of the said brim-shaped part, or in the said fixed auxiliary | assistant part in addition to the said brim-shaped part, The Claims 1 thru | or 2 characterized by the above-mentioned. The foldable box according to claim 3.   The foldable box according to any one of claims 1 to 4, wherein the first side surface of the outer container includes a thick portion that promotes formation of the collar portion. .   The inner surface of the first side surface of the outer container is provided with a second fixing structure for detachably fixing the tilting panel. 6. Foldable box according to item.   A connection sheet made of a flexible sheet material and connecting an edge forming the second opening in the bent panel and an inner surface on the first opening side on the second side surface; The foldable box according to any one of claims 1 to 6, wherein   The outer surface of the bottom surface of the outer container is provided with a stacking panel having the same plane size as the second opening of the heat insulating container or a plane dimension obtained by subtracting a clearance from this plane dimension. The foldable box according to any one of claims 1 to 7.   A lid panel having the same plane dimension as the bottom plane of the heat insulating container or a plane dimension obtained by subtracting a clearance from this plane dimension, and the lid panel being detachable from a communication port between the first opening and the second opening; The folding box according to any one of claims 1 to 8, further comprising a lid having a third fixing structure for fixing the box to the box.

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