JP3223144U - Folding container - Google Patents

Abstract

A folding container having a simple configuration that can be transported in a compactly folded state is provided. A folding container (1) is formed of a foldable paper sheet body (2) and a frame structure (16) made of a thin wooden plate, and the sheet body (2) includes first sides (3, 3) parallel to each other; The frame structure 16 includes a bottom surface 5 having two sides 4, 4, first side pieces 6, 6, and second side pieces 7, 7. It consists of first frame bodies 17 and 17 attached to 6a respectively, and second frame bodies 18 and 18 connected to the first frame bodies 17 and 17, and the second side pieces 7 and 7 are: Joint sides 12 and 12 for joining the first side pieces 6 and 6 and the second side pieces 7 and 7 are provided, respectively, and inclined folds 15a and 15b that are inclined with respect to the second side 4 are provided. It is formed. [Selection] Figure 1

Description

  The present invention relates to a folding container for containing food, and more particularly to a folding container having a simple configuration that can be transported in a compactly folded state.

Conventionally, as a container for storing food, for example, a paper folding container or an assembled wooden box that cannot be disassembled or folded has been used.
However, a paper container can be transported and stored in a large amount at a time by folding, but has a problem that deformation and breakage are likely to occur after food is packed because of its low strength. On the other hand, although the wooden box has strength, it can prevent deformation and the like, but has a problem that it takes time to manufacture. Moreover, since the wooden box is not foldable, there is a problem that it is bulky during transportation and difficult to transport and store a large amount at a time.
Therefore, in recent years, containers that can be folded and have a certain degree of strength have been developed, and some inventions or devices have already been disclosed.

Patent Document 1 discloses an invention relating to an assembly container made of a paper material having a high side wall strength under the name “simple assembly double side wall container”.
Hereinafter, the invention disclosed in Patent Document 1 will be described. The invention disclosed in Patent Document 1 is a container including a rectangular bottom plate and two pairs of side wall portions facing each side of the bottom plate. At least a pair of the side wall portions is a double side wall portion, and a space thereof. It is characterized in that a loading material mainly composed of corrugated cardboard sheets provided with a corrugated layer (corrugated sheet layer) having a single layer or a plurality of layers is disposed almost densely inside.
In the invention having such a feature, since the loading material is interposed inside the double side wall, the rigidity and strength of the entire container can be stably maintained, and the contents of the container can be obtained by buffering the external pressure of the cardboard sheet. You can protect things from the impact. Further, even when a thin sheet material having relatively little rigidity is used, the rigidity and strength of the container can be sufficiently maintained, so that the sheet material cost can be reduced. Furthermore, since the container can be folded flat, it is convenient for transportation and the like, and since the side wall can be raised and fixed at the start of use, the load of assembly work can be reduced.

Next, Patent Document 2 discloses a device related to a lunch box made of a wooden board and paper under the name “wooden lunch box”.
The device disclosed in Patent Document 2 includes a bottom surface portion, a plate member having a pair of first side surface portions and second side surface portions respectively connected to both sides in the short side direction and the long side direction of the bottom surface portion, and the bottom surface portion. Adhering between the second side surface portion and the end face sealing paper provided so as to keep the lunch box unfolded, the surface of the plate is covered with a reinforcing layer, the first side surface portion and the bottom surface portion Each of the boundary and the boundary between the second side surface portion and the bottom surface portion is provided with a fold groove formed by being cut to about half the thickness of the plate material.
In the device having such a feature, in a state where the lunch box is not used, the first side surface portion is folded so as to contact the surface of the bottom surface portion in the fold groove, and the second side surface portion is also on the first side surface portion in the fold groove. It can be folded to contact. Therefore, the storage space for storing or transporting the lunch box can be efficiently saved. Moreover, since the surface of a board | plate material is coat | covered with the reinforcement layer, it is possible to prevent the folding groove from being broken during folding. Therefore, the reinforcing layer can suppress the breakage of the plate material during the manufacturing process and use of the lunch box, and can increase the yield.

JP-A-10-72026 Utility Model Registration No. 3134111

  However, in the invention disclosed in Patent Document 1, no charging material is provided at four corners. Therefore, it is considered that the strength of the corner is clearly weaker than the strength of the side wall provided with the loading material. That is, in the invention disclosed in Patent Document 1, there is a fragile portion called a corner portion. Therefore, when the contents are accommodated, the corner portion may be damaged depending on its weight or how to hold the container. .

Next, in the device disclosed in Patent Document 2, the process of forming a fold groove in a plate material and covering with a reinforcing layer is complicated. Therefore, there is a possibility that manufacturing effort and cost may not be reduced.
Moreover, although the 1st side part is connected with the bottom face part via the folding groove, it is isolate | separated from the 2nd side part. Furthermore, both ends of the pair of second side surface portions facing each other are connected only by the end face sealing paper. That is, when the pair of second side surface portions is raised, the upper edges of the second side surface portions are prevented from being separated too much only by the end face sealing paper, and as a result, the lunch box is maintained in a box shape. In addition, although the specific material of end face sealing paper is unknown, generally the intensity | strength of paper is weaker than the intensity | strength of wood. From this, when the first side part is raised and the contents are stored in the lunch box, the pressure applied to the first side part from the inside damages the end face sealing paper, and the box shape cannot be maintained. there is a possibility.

  The present invention has been made in response to such a conventional situation, and can be easily manufactured without going through complicated processes, and can be folded, so it is not bulky and can be transported and stored at once. An object of the present invention is to provide a folding container having an excellent shape retaining property capable of maintaining a box shape at the time of use because there is no fragile portion which is easily increased and easily damaged.

  In order to achieve the above object, a first device is a folding container comprising a foldable sheet body and a frame structure attached to a peripheral portion of the sheet body, and the sheet body is a pair of first parallel members. , A rectangular bottom surface having a pair of second sides orthogonal to the first side and parallel to each other, and a pair of first side pieces respectively extending from the pair of first sides And a pair of second side pieces extending from the pair of second sides, respectively, and the frame structure is a pair of first side pieces attached to the inner surface or the outer surface of the pair of first side pieces, respectively. A frame and a pair of second frames connected to the pair of first frames so that the frame structure has a quadrangular shape when the frame structure is viewed from above; The first and second side pieces have first and second upper edges parallel to the first and second sides of the bottom surface, respectively, And first and second side edges orthogonal to the second side, and at least one of the first side edges and the second side edges joins the first side piece and the second side piece. A pair of joint sides are provided, and the second side piece is formed with a pair of inclined folds that are inclined with respect to the second side, and the pair of inclined folds has a distance between the inclined folds of the first side fold. It is formed so as to expand from the upper edge of 2 to the second side.

  In the device having such a configuration, for example, paper is used as a foldable sheet body. The first and second frame bodies are reinforcing members that reinforce the first and second side pieces constituting the sheet body, respectively. For example, a flat plate made of wood or foamed resin is used. Furthermore, when sticking a 1st frame to the inner surface or outer surface of a 1st side piece, respectively, an adhesive agent or a double-sided tape is used, for example. And since a joining edge is the glue margin for joining a 1st side piece and a 2nd side piece, an adhesive agent and a double-sided tape are added also to the single side | surface or both surfaces of this joint side.

In the idea of the above configuration, when the folding container is folded, the following procedures (a) to (e) are performed.
First, (a) the second frame connected to the first frame is removed from the first frame.
Next, (b) the pair of second side pieces of the sheet body are valley-folded on the pair of second sides as viewed from above the bottom surface of the sheet body, and overlapped on the bottom surface of the sheet body.
Subsequently, (c) the pair of first side pieces of the sheet body is valley-folded on the pair of first sides as viewed from above the bottom surface.
Further, (d) since the second side piece is formed with a pair of inclined folds, when each of the inclined folds is valley-folded when viewed from the outer surface side of the second side piece, for example, The side pieces of the two pieces fall down so that their first upper edges are close to each other.
Finally, (e) when the pair of first side pieces are folded down until they completely overlap the pair of second side pieces that have been folded in advance, the folding container becomes substantially plate-like and is in a completely folded state. Become.

On the other hand, when the folding container according to the first device is used, when the first and second side pieces are raised in the reverse procedure to the above, the folding container changes from a plate shape to a box shape. Finally, when the pair of second frames are connected to the pair of first frames, the box state of the folding container is maintained. At this time, the pair of second frames are in a state of being separated from the pair of second side pieces.
However, the pair of second frames are connected to the pair of first frames so that the frame structure forms a substantially square shape when the frame structure is viewed from above. Therefore, in addition to the fact that the four corners that appear in the box-shaped folding container are joined to the first side piece and the second side piece made of the sheet body, Both end portions and both end portions of the second frame are connected to each other. With this configuration, breakage is unlikely to occur at the corners of the folding container. Moreover, since the first side piece and the second side piece are reinforced by the first frame body and the second frame body, respectively, the portions other than the corner portions of the folding container do not correspond to the fragile portion. . Therefore, the fragile part does not exist in the folding container.

Next, the second device is the first device according to the first device, wherein the first frame is opposed to the first side when the first frame is attached to the first side piece. 1 is provided with a first upper end surface and first both end portions orthogonal to the first upper end surface, and the second frame is connected to the first frame. And a second upper end surface facing the second side and a second both side end portion orthogonal to the second upper end surface, the first both side end portions being the first both side end portions. A pair of first engaging portions that form a straight line along the portion are formed, respectively, and the second side end portions form a straight line and are engaged with the pair of first engaging portions. The engaging portions are formed respectively.
In the device having such a configuration, for example, a groove is conceivable as the first engaging portion having a linear shape. In this case, a projecting portion that engages with the groove that is the first engaging portion can be considered as the second engaging portion that forms a straight line. In addition, the groove portion and the protruding portion may be interchanged, the first engaging portion may be a protruding portion, and the second engaging portion may be a groove portion.

In the device of the above configuration, in addition to the operation of the first device, the pair of second engaging portions in the second frame body are respectively provided with respect to the pair of first engaging portions in the first frame body. The places to be engaged are the four corners constituting the frame structure. Then, when the second frame body is lowered with the second engaging portion along the first engaging portion as it is, a quadrangular frame structure is completed.
Further, in the completed frame structure, the second frame body is lowered, so that the pair of inclined folds formed on the second side piece is prevented from being folded and the second side piece is accommodated. It is prevented from being damaged by the pressure or bias of the food.

Subsequently, a third device is characterized in that, in the first or second device, the pair of joint sides has a curved shape in which the peripheral shape does not have a corner portion.
In the device of such a configuration, in addition to the action of the first or second device, the peripheral shape of the pair of joint sides forms a curved shape having no corners, so the joint sides are not easily peeled off from the joint target. .

Furthermore, a fourth device is characterized in that, in any one of the first to third devices, the sheet body is made of paper, and the first and second frame bodies are each made of a thin wooden plate.
In the device having such a configuration, the material, thickness, and strength of the paper or thin plate are appropriately selected depending on the type of food contained in the folding container.
In the device of the above configuration, in addition to the operation of the device described in any one of the first to third, the folding container is made of appropriately selected paper and wooden thin plate, so that it has appropriate strength and light weight. It is. Further, when discarding after use, there is often no need to separate the paper and the thin plate, so that it is possible to dispose only by folding the folding container again.

  According to the first device, the folding container can be manufactured with a small number of parts such as the sheet body and the first and second frame bodies. Further, the sheet body is obtained by cutting the sheet body so as to include a rectangular bottom surface and a pair of first and second side pieces, and the frame structure includes the first and second frame structures. Since it is obtained by molding the first and second frames so as to match the shape of the side piece, the material can be easily processed. Furthermore, a folding container can be completed by sticking a pair of 1st frame bodies with an adhesive etc. to a pair of 1st edge | side of a pair of 2nd side piece, respectively. Therefore, a folding container can be manufactured inexpensively and easily without going through complicated steps.

Moreover, in a folding container, it can be easily made into a plate-shaped folding state by the above-mentioned procedure (a) thru | or (e). Moreover, the folded folding container can be quickly changed into a box shape by a procedure reverse to this procedure. Therefore, according to the first device, the preparation time required for packing and using the folding container can be shortened, and the working efficiency is improved.
Furthermore, according to the first device, since it can be folded, it is not bulky, and the transportation amount and the storage amount can be increased at one time, so that the cost for transportation and storage can be reduced. In addition, since the first device does not have a fragile portion that easily causes breakage, the box shape at the time of use can be firmly maintained regardless of the weight and the way of holding the food.

  According to the second device, in addition to the effect of the first device, the second engagement portion is formed in a square shape only by lowering the second frame body in a state along the first engagement portion. Since the frame structure is formed, a reinforcing member that reinforces the sheet body can be easily formed. In addition, according to the second device, the locations where the second engaging portions are engaged with the first engaging portions are the four corner portions of the frame structure. The corners are not easily damaged by pressure, bias, or impact applied from the outside, and high reliability from the customer for the second device can be expected.

  According to the third device, in addition to the effects of the first or second device, for example, the joint side is joined to the outer surface of the first side piece or the outer surface of the first frame, Even if it can be in direct contact, it is possible to prevent the joint side from being peeled off.

  According to the fourth device, in addition to the effects of any one of the first to third devices, the folding container has appropriate strength and is lightweight, so that an individual can hold it with one hand, There is little burden when transporting. Further, after use, the container can be disposed of only by folding it again, so that it does not take time and is easy to use.

(A) is an external view at the time of seeing the folding container which concerns on 1st Embodiment from diagonally upward, (b) is an expanded view of the sheet | seat body which comprises the folding container. (A) is an expanded view of the frame structure which comprises the folding container which concerns on 1st Embodiment, (b) is the 1st and 2nd engaging part which comprises the frame structure, FIG. ) Is a front view of the first and second engaging portions shown in (b) when viewed from the same direction as that of (b). FIG. (A) is the external view at the time of seeing the folding container which concerns on 1st Embodiment in the middle of being folded from diagonally upward, (b) is the folding container completely folded, FIG. It is a front view at the time of seeing from the A line direction in FIG. (A) is an external view at the time of seeing the folding container which concerns on the modification of 1st Embodiment from diagonally upward, (b) is an expanded view of the sheet | seat body which comprises the folding container. (A) is an external view at the time of seeing the folding container which concerns on the modification of 1st Embodiment in the middle of being folded from the diagonally upper direction, (b) is a figure which shows the folding container completely folded. It is a front view at the time of seeing from the A line direction in 1 (a).

A folding container according to a first embodiment of the present invention will be described in detail with reference to FIGS. Fig.1 (a) is an external view at the time of seeing the folding container which concerns on 1st Embodiment from diagonally upward, FIG.1 (b) is an expanded view of the sheet | seat body which comprises the folding container.
As shown in FIG. 1A, the folding container 1 according to the embodiment is a folding container including a foldable sheet body 2 and a frame structure 16 attached to a peripheral portion of the sheet body 2. In addition, the folding container 1 has a predetermined width W, a depth L longer than the width W, a predetermined height H, and four corners 1a of the folding container 1 when formed. It is used as a lunch box that mainly stores food in its internal space.
In addition, in Fig.1 (a), the external appearance of the folding container 1 just before forming in a box shape is shown.

Specifically, the sheet body 2 constituting the folding container 1 is formed by cutting a piece of paper into a shape as shown in FIG. The material, thickness, and strength of the paper may be appropriately selected depending on the type of food stored in the folding container 1.
As shown in FIG. 1B, the sheet body 2 includes a pair of first sides 3 and 3 parallel to each other and a pair of second sides orthogonal to the first sides 3 and 3 and parallel to each other. From a rectangular bottom surface 5 having sides 4 and 4, a pair of first side pieces 6 and 6 extending from the pair of first sides 3 and 3, and a pair of second sides 4 and 4, respectively. A pair of second side pieces 7 and 7 are provided. In addition, FIG.1 (b) shows the sheet | seat body 2 at the time of seeing the inner surface 5a in which a foodstuff is mounted among both surfaces of the bottom face 5 from upper direction.
Among these, the first side piece 6 has a first upper edge 8 parallel to the first side 3 of the bottom surface 5, and first side edges 9, 9 orthogonal to the first side 3. Further, of both surfaces of the first side piece 6, a surface continuous with the inner surface 5 a of the bottom surface 5 is an inner surface 6 a, and a back surface of the inner surface 6 a is an outer surface 6 b.
On the other hand, the second side piece 7 has a second upper edge 10 parallel to the second side 4 of the bottom surface 5, and second side edges 11, 11 orthogonal to the second side 4. And like the 1st side piece 6, the surface which continues to the inner surface 5a of the bottom face 5 among both surfaces of the 2nd side piece 7 is the inner surface 7a, and the back side surface of this inner surface 7a is the outer surface 7b (FIG. 1). (See (a)).

Further, the second side edges 11, 11 are provided with a pair of joining sides 12, 12 for joining the first side pieces 6, 6 and the second side pieces 7, 7, respectively. Specifically, the joining sides 12 and 12 each have a substantially trapezoidal shape, and an adhesive (not shown) is applied to both sides thereof, so that the first side as shown in FIG. It is sandwiched between the piece 6 and a first frame 17 to be described later, and is simultaneously fixed to the inner surface 6a of the first side piece 6 and the outer surface 17d (see FIG. 2B) of the first frame 17. The
Then, wedge-shaped cuts 13 and 13 are provided at the boundaries between the joining sides 12 and 12 and the first side piece 6, respectively. The notches 13 and 13 are provided in order to ensure a larger area of the joint sides 12 and 12.

The bottom surface 5 is formed with folds 14a and 14a for tilting the first side pieces 6 and 6 so that the first upper edges 8 and 8 of the first side pieces 6 and 6 are brought close to each other. . The folds 14a and 14a are provided so as to coincide with the first sides 3 and 3, and are fold-folded when the inner surface 5a of the bottom surface 5 is viewed from above.
Note that virtual lines 14b and 14b provided slightly closer to the center of the bottom surface 5 than the folds 14a and 14a are virtual straight lines provided with an interval corresponding to the thickness of the first frame 17 described later from the fold line 14a. Thus, it is used to determine the position of each end near the second side 4 of a pair of inclined folds 15a and 15b described later.
Further, the bottom surface 5 is formed with folds 14c and 14c for tilting the second upper edges 10 and 10 of the second side pieces 7 and 7 so as to approach each other. The folds 14c and 14c are provided so as to coincide with the second sides 4 and 4, and are fold-folded when the inner surface 5a of the bottom surface 5 is viewed from above.

Next, the second side piece 7 is formed with a pair of inclined folds 15 a and 15 b that are inclined with respect to the second side 4. The pair of inclined folds 15a, 15b is formed so that the interval between the inclined folds 15a, 15b extends from the second upper edge 10 to the second side 4, and the second side piece 7 As viewed from the outer surface 7b, both are valley-folded. Specifically, the magnitude of the angle theta _a to one inclined crease 15a is raised from the second side 4 is 45 degrees. Similarly, the magnitude also a 45-degree angle theta _b of the other inclined crease 15b is raised from the second side 4.
Note that, in the pair of second side pieces 7 and 7, the end portions of the inclined folds 15 a and 15 b near the second side 4 coincide with both ends of the virtual lines 14 b and 14 b, respectively.

Next, the frame structure 16 constituting the folding container 1 will be described in detail with reference to FIG. FIG. 2 (a) is a development view of the frame structure constituting the folding container according to the first embodiment, and FIG. 2 (b) shows the first and second engaging portions constituting the frame structure. FIG. 2C is a front view when viewed from the direction of the A line in FIG. 1A, and FIG. 2C is a modification of the first and second engaging portions shown in FIG. It is a front view at the time of seeing from the same direction as b). In addition, about the component shown in FIG. 1, the same code | symbol is attached | subjected also in FIG. 2, and the description is abbreviate | omitted.
As shown in FIG. 2A, the frame structure 16 is formed using a pair of first frame bodies 17 and 17 and a pair of second frame bodies 18 and 18 as materials. The first frame body 17 and the second frame body 18 are each formed by forming thin wooden plates into rectangular shapes having different lengths. The material, thickness, and strength of the thin plate may be appropriately selected depending on the type of food stored in the folding container 1.
Of these, the first frames 17 and 17 are bonded to the inner surfaces 6a and 6a (see FIG. 1B) of the first side pieces 6 and 6 except for the ranges near the both ends. It is stuck using an agent (not shown). Therefore, the first frame bodies 17 and 17 cannot be separated from the first side pieces 6 and 6, respectively.

Subsequently, the configurations of the first frame body 17 and the second frame body 18 will be further described.
As shown in FIG. 2A and FIG. 2B, the first frame 17 has a first side when the first frame 17 is attached to the first side piece 6. 3 (refer to FIG. 1B), and a first both end portions 17b, 17b orthogonal to the first upper end surface 17a. Of the both surfaces of the first frame body 17, the surface that is not adhered to the first side piece 6 is the inner surface 17c, and the surface that is adhered to the first side piece 6 on the back side of the inner surface 17c. The outer surface 17d.
In addition, the second frame 18 is a second frame that faces the second side 4 (see FIG. 1B) when the second frame 18 is connected to the first frame 17. An upper end surface 18a and second side end portions 18b, 18b orthogonal to the second upper end surface 18a are provided. Of the both surfaces of the second frame 18, the surface that does not contact the inner surface 7a of the second side piece 7 is the inner surface 18c, and the surface that contacts the inner surface 7a of the second side piece 7 on the back side of the inner surface 18c. Is the outer surface 18d.

Furthermore, a pair of first engaging portions 19 and 19 are formed at the first side end portions 17b and 17b, respectively. Similarly, a pair of second engaging portions 20 and 20 are formed at the second side end portions 18b and 18b, respectively.
Specifically, the first engaging portions 19 and 19 are groove portions (female structure) provided on the inner surface 17c side of the first frame body 17 and along the first side end portions 17b and 17b. Are each linear. The second engaging portions 20 and 20 are projecting portions (male structures) projecting outward from the second side end portions 18b and 18b, respectively, to the second side end portions 18b and 18b. Along each line.

Therefore, as shown in FIG. 2B, the second engaging portions 20 and 20 can be engaged with the first engaging portions 19 and 19, respectively. As a result, the second frame bodies 18 and 18 are connected to the first frame bodies 17 and 17 so that the frame structure 16 forms a square shape when the frame structure 16 is viewed from above. The Therefore, the second frame 18 is prevented from being detached and moved in the direction of the outer surface 18d due to the pressure of the stored food.
However, the second frames 18 and 18 are not fixed to the first frames 17 and 17 inseparably. Therefore, the second frame bodies 18 and 18 can be inserted by being slid from above between the first frame bodies 17 and 17, respectively, or extracted from between the first frame bodies 17 and 17. . In this way, the folding container 1 can be folded into a substantially plate shape or box-shaped because the second frame bodies 18 and 18 can be attached to and detached from the first frame bodies 17 and 17. It is possible to assemble it.

Note that the width of the first engagement portion 19 is constant along the width W direction of the folding container 1, and the width of the second engagement portion 20 is also constant along the width W.
Then, the engaging portions of the first engaging portions 19 and 19 and the second engaging portions 20 and 20 as described above become four corner portions 16a constituting the frame structure 16, and further, this corner portion 16a. The 2nd side piece 7 of the sheet | seat body 2 and the 1st side piece 6 are stuck on the outer side.

Next, modified examples of the first and second engaging portions will be described with reference to FIG.
As shown in FIG. 2C, as a modification of the first engaging portion 19 and the second engaging portion 20, for example, a first engaging portion 19a and a second engaging portion 20a can be considered. . The arrangement of these engaging portions with respect to the first side piece 6 and the second side piece 7 is the same as the arrangement of the first engaging portion 19 and the second engaging portion 20. Therefore, in the same manner as the first engagement portion 19 and the second engagement portion 20, the first engagement portion 19a and the second engagement portion 20a are moved in the direction of the outer surface 18d. Is prevented.
However, the width of the first engaging portion 19a is increased along the width W direction of the folding container 1, and the width of the second engaging portion 20a is also increased along the width W direction. This is different from the case of the engaging portion 19 and the second engaging portion 20. Therefore, the first frame bodies 17 and 17 are moved away from each other, and the first engagement portions 19a and 19a are prevented from being detached from the second engagement portions 20a and 20a.

Then, the folding method of the folding container which concerns on an Example is demonstrated using FIG. FIG. 3A is an external view when the folding container according to the first embodiment in the middle of being folded is viewed obliquely from above, and FIG. 3B is a diagram showing the completely folded folding container. It is a front view at the time of seeing from the A line direction in FIG.1 (b). 1 and 2 are denoted by the same reference numerals in FIG. 3 and description thereof is omitted.
As shown in FIG. 3A, when the folding container 1 formed in a box shape is folded, first, (a) a second frame body inserted and connected between the first frame bodies 17 and 17. 18 and 18 (see FIGS. 1 and 2) are removed from the first frames 17 and 17 and removed. FIG. 3A shows a state after the second frame bodies 18 and 18 are removed from the first frame bodies 17 and 17.
Next, (b) the pair of inclined folds 15a and 15b formed on the second side pieces 7 and 7 respectively are valley-folded when viewed from the outer surface 7b of the second side piece 7, and the second side pieces 7 and 7 are respectively tilted toward the inner surface 5 a of the bottom surface 5.
Subsequently, (c) the first side pieces 6, 6 are valley-folded at the fold lines 14 a, 14 a (see FIG. 1B) as viewed from above the inner surface 5 a of the bottom surface 5.
Further, (d) when the inclined folds 15a and 15b are more strongly folded, the second side pieces 7 and 7 fall down so that the second upper edges 10 and 10 come closer to each other, and the first upper edges 8 and 8 The first side pieces 6 and 6 also fall down as approaching.
Finally, (e) the first side pieces 6, 6 are brought down until they completely overlap the second side pieces 7, 7 that have been folded.

By the above steps (a) to (e), the folding container 1 is substantially plate-shaped as shown in FIG. 3B, and is in a completely folded state.
On the other hand, when the first side pieces 6 and 6 and the second side pieces 7 and 7 are raised in the reverse procedure, the folding container 1 changes from a substantially plate shape to a box shape. Thereafter, as shown in FIG. 1A, the second engaging portions 20 and 20 of the second frame 18 are respectively connected to the first engaging portions 19 and 19 of the first frame 17. When the first frame bodies 17 and 17 and the second frame bodies 18 and 18 are coupled with each other, the box state of the folding container 1 is maintained. At this time, the second frame 18 remains separated from the second side piece 7 and is not fixed to the first frames 17 and 17. Therefore, the 2nd frame 18 can be extracted from between the 1st frames 17 and 17, and the folding container 1 can be folded easily.

The folding container 1 having such a configuration is manufactured by at least the following steps (1) to (3).
First, as the step (1), the sheet body 2 is cut into the shape shown in FIG. 1A, and the first frame bodies 17 and 17 and the second frame bodies 18 and 18 are formed as shown in FIG. Molded to the shape shown in.
Next, as a step (2), the outer surfaces 17d and 17d of the first frame members 17 and 17 are applied to the inner surfaces 6a and 6a of the first side pieces 6 and 6 of the cut sheet body 2 using an adhesive. Affix each. At this time, the fixed range near the first side end portions 17b, 17b is not attached to the inner surfaces 6a, 6a for later attachment to the joining sides 12, 12.
Further, as the step (3), the folds 14a and 14a and the folds 14c and 14c are valley-folded, and the first side pieces 6 and 6 and the second side pieces 7 and 7 are raised from the bottom surface 5 to stand. The joint sides 12, 12 provided on the second side piece 7 are sandwiched between the inner surface 6 a of the first side piece 6 and the outer surface 17 d of the first frame 17, and the outer surface 17 d, the joint side 12, The inner surfaces 6a are bonded together.
Through the steps so far, the sheet body 2 itself is formed in a box shape, and the folding container 1 in which the first side pieces 6 and 6 of the sheet body 2 are reinforced by the first frame bodies 17 and 17, respectively. Manufactured.

  As step (4), as shown in FIG. 1A, the second side piece 7 is inserted by inserting the second frame bodies 18 and 18 between the first frame bodies 17 and 17. , 7 are also reinforced by the second frames 18, 18, respectively. However, the step (4) is not necessarily performed immediately after the steps (1) to (3).

In the folding container 1 manufactured by the steps (1) to (3), the folding container 1 can be maintained in a substantially plate-like state as described with reference to FIG.
On the other hand, in the folding container 1 manufactured by the steps (1) to (4), the sheet body 2 itself is formed in a box shape, and the second frames 18 and 18 are respectively in the first engagement. The frame structure 16 is completed by being connected to the portions 19 and 19.
Therefore, the four corners 1a appearing in the box-shaped folding container 1 have a configuration in which the first side pieces 6, 6 and the second side pieces 7, 7 are joined to each other, The first frame 17, 17 includes first corner portions 17 b, 17 b and second frame ends 18, 18 having second corner portions 18 b, 18 b that are connected to each other to form a corner portion 16 a. . With this configuration, the four corner portions 1a are less likely to be damaged. Further, the first side pieces 6 and 6 and the second side pieces 7 and 7 are also reinforced by the first frame bodies 17 and 17 and the second frame bodies 18 and 18, respectively, other than the corner portion 1a. Therefore, it does not fall under the vulnerable part. Therefore, the fragile part does not exist in the folding container 1.
Further, the folding container 1 includes the sheet body 2 and the frame structure 16 appropriately selected in thickness and strength, and thus has an appropriate strength and is lightweight.

As described above, the folding container 1 can be manufactured using the sheet body 2 made of paper, the first frame bodies 17 and 17 and the second frame bodies 18 and 18 made of wooden thin plates as materials. . Therefore, materials can be procured and processed easily and inexpensively, and rapid mass production is possible. Moreover, since all of the steps (1) to (4) can be easily performed, the folding container 1 can be easily and inexpensively manufactured from the viewpoint of the manufacturing process.
In addition, the folding container 1 can maintain a substantially plate-like compact folded state by not inserting the second frame members 18 and 18 between the first frame members 17 and 17, so that it can be transported at a time without being bulky. And the amount of storage can be increased. Therefore, the cost for transportation and storage can be reduced.

Furthermore, the folding container 1 can be brought into a folded state and a usable state by a simple procedure of inserting and removing the second frame members 18 and 18 between the first frame members 17 and 17. Can be switched. Therefore, in addition to being very convenient, the preparation time required for packing and using the folding container 1 can be shortened, and work efficiency is improved.
Among these, when the folding container 1 is in a usable state, since the fragile portion does not exist in the folding container 1, the box shape at the time of use is firmly maintained regardless of the weight of the food or the way it is held by the user. It is possible. In addition, since the folding container 1 is made of paper and a wooden board, it is not necessary to separate the sheet body 2 and the frame structure 16 after use, and in addition, the folding container 1 can be discarded only by folding it again. Therefore, it is easy to use because it does not take time to dispose of it.

Next, the folding container which concerns on the modification of 1st Embodiment is demonstrated in detail using FIG.4 and FIG.5. Fig.4 (a) is an external view at the time of seeing the folding container which concerns on the modification of 1st Embodiment from diagonally upward, FIG.4 (b) is an expanded view of the sheet | seat body which comprises the folding container. is there. Fig.5 (a) is an external view at the time of seeing the folding container which concerns on the modification of 1st Embodiment in the middle of folding from diagonally upward, FIG.5 (b) is the same folding folded completely It is a front view at the time of seeing a container from the A line direction in Fig.1 (a). The components shown in FIGS. 1 to 3 are denoted by the same reference numerals in FIGS. 4 and 5 and description thereof is omitted.
As shown to Fig.4 (a), 1 A of folding containers which concern on the modification of an Example are provided with the sheet | seat body 21 instead of the sheet | seat body 2 of the folding container 1 of an Example. However, the frame structure 16 of the folding container 1 is also provided in the folding container 1A.
In FIG. 4A, the appearance of the folding container 1A immediately before being formed into a box shape is shown.

Specifically, the sheet body 21 constituting the folding container 1A is formed by cutting a piece of paper into a shape as shown in FIG. 4B.
As shown in FIG. 4 (b), the sheet body 21 is replaced with a pair of joining sides 12 and 12 (see FIG. 1 (b)) provided on the second side pieces 7 and 7 of the folding container 1, respectively. A pair of joining sides 22 and 22 are provided. Since the joining edge 22 has a substantially semicircular shape with no corners, the joining edge 22 is less likely to be peeled off from the joining object than the joining edges 12 and 12 having two corners.
Further, the sheet body 21 is provided with a rectangular cut 23 at the boundary between the first side piece 6 and the joint side 22 instead of the wedge-shaped cut 13 (see FIG. 1B) of the folding container 1. It is done. The other configuration of the sheet body 21 is the same as the configuration of the sheet body 2 of the folding container 1.

Moreover, in the folding container 1 which concerns on an Example, as shown in FIG.1 (b), the 1st side pieces 6 and 6 are each affixed on the outer surfaces 17d and 17d of the 1st frame bodies 17 and 17. As shown in FIG. In contrast, in the folding container 1A according to the modification, the first side pieces 6 and 6 are attached to the inner surfaces 17c and 17c of the first frame bodies 17 and 17, respectively. However, the four joining sides 22 of the folding container 1 </ b> A are respectively attached to the outer surface 17 d of the first frame 17 in the same manner as the joining side 12 of the folding container 1.
That is, in order for the first side piece 6 and the joining side 22 to be adhered as described above, the first side edges 9 of the first side piece 6 and the inner surface of the second side piece 7 are used. Since a gap corresponding to the thickness of the second frame 18 is necessary between the second frame 18 and the gap 7a, a notch 23 is provided as the gap.
In the folding container 1 </ b> A, the first side piece 6 and the second side piece 7 are joined to the first frame body 17 via the joining side 22. Also in such a configuration, the first side piece 6 and the second side piece 7 are joined via the joining side 22. The configuration of the folding container 1A according to the other modified example is the same as the configuration of the folding container 1 according to the embodiment.

  As shown in FIGS. 5A and 5B, in the folding container 1A according to the modification, all the joining sides 22 are exposed on the outer surfaces 17d and 17d of the first frame bodies 17 and 17. ing. Therefore, the joint side 22 is in direct contact with other objects. However, since the joint side 22 has a substantially semicircular shape having no corners, the joint side 12 of the folding container 1 (FIG. 1B). ))) Is more difficult to peel off. In addition, since the joint side 22 has a substantially semicircular shape, a soft impression can be given to the viewer. The operations and effects of the folding container 1A according to the other modified examples are the same as the functions and effects of the folding container 1 according to the embodiment.

In addition, the folding container which concerns on this invention is not limited to what is shown in an Example. For example, in the folding container 1, the material of the sheet body 2 and the frame structure 16 may be, for example, a combination of paper and a thin plate made of foamable resin other than the combination of paper and wooden thin plate.
Further, the joining sides 12 and 12 may be attached to the outer surface 6 b of the first side piece 6 instead of being sandwiched between the first side piece 6 and the first frame body 17. Further, in the folding container 1, the joining sides 12, 12 are provided on the second side edges 11, 11 of the second side piece 7, instead of the first side edges 9, 9 of the first side piece 6. May be provided.
In addition, the inclined folds 15 a and 15 b provided on the second side piece 7 may both be mountain-folded when viewed from the outer surface 7 b of the second side piece 7.

  The present invention can be used as a folding container for containing food.

  DESCRIPTION OF SYMBOLS 1,1A ... Folding container 1a ... Corner | angular part 2 ... Sheet | seat body 3 ... 1st edge | side 4 ... 2nd edge | side 5 ... Bottom surface 5a ... Inner surface 6 ... 1st side piece 6a ... Inner surface 6b ... Outer surface 7 ... 2nd Side piece 7a ... Inner surface 7b ... Outer surface 8 ... First upper edge 9 ... First both side edges 10 ... Second upper edge 11 ... Second both side edges 12 ... Joint side 13 ... Cut 14a ... Fold 14b ... Virtual line 14c ... Folds 15a, 15b ... Inclined folds 16 ... Frame structure 16a ... Corner 17 ... First frame 17a ... First upper end surface 17b ... First both ends 17c ... Inner surface 17d ... Outer surface 18 ... Second Frame 18a ... Second upper end surface 18b ... Second side end portions 18c ... Inner surface 18d ... Outer surface 19 ... First engagement portion 19a ... First engagement portion 20 ... Second engagement portion 20a ... First 2 engaging portions 21 ... sheet body 22 ... joining side 23 ... notch

Claims (4)

A folding container comprising a foldable sheet body and a frame structure attached to the peripheral edge of the sheet body,
The sheet body includes a pair of first sides parallel to each other, a rectangular bottom surface having a pair of second sides orthogonal to the first sides and parallel to each other, and a pair of the first sides. A pair of first side pieces each extending from the pair, and a pair of second side pieces respectively extending from the pair of second sides,
When the frame structure is viewed from above the pair of first frame bodies attached to the inner surface or the outer surface of the pair of first side pieces, respectively, the frame structure is square. A pair of second frames connected to the pair of first frames so as to form a shape,
The first and second side pieces respectively include first and second upper edges parallel to the first and second sides of the bottom surface, and first and second sides orthogonal to the first and second sides. Having second side edges;
At least one of the first side edges and the second side edges is provided with a pair of joining sides for joining the first side piece and the second side piece, respectively.
The second side piece is formed with a pair of inclined folds that are inclined with respect to the second side,
The pair of inclined folds are formed so that an interval between the inclined folds is expanded from the second upper edge to the second side. The first frame has a first upper end surface facing the first side and the first upper end surface when the first frame is attached to the first side piece. First end portions orthogonal to each other,
When the second frame is connected to the first frame, the second frame is connected to a second upper end surface facing the second side and the second upper end surface. Second end portions orthogonal to each other,
The first side end portions are each formed with a pair of first engaging portions that form a straight line along the first side end portions,
2. The pair of second engaging portions that form a linear shape and engage with the pair of first engaging portions, respectively, are formed on the second side end portions, respectively. Folding container.   The folding container according to claim 1 or 2, wherein the pair of joining sides has a curved shape in which a peripheral shape thereof does not have a corner portion.   The folding container according to any one of claims 1 to 3, wherein the sheet body is made of paper, and the first and second frame bodies are each made of a thin wooden plate.

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