JP2022030911A - Assembled box - Google Patents

Abstract

To solve the problem that a conventional paper box requires a dedicated automatic box making machine, is sold in a box-like body, and accordingly a user is difficult to handle the paper box, for example, securing of a storage space is necessary.SOLUTION: An assembled box 10 mainly includes a substantially square bottom face part 13, a pair of first side wall parts 14 and 15 that are continuously formed in a vertical width direction of the bottom face part 13, a pair of second side wall parts 16 and 17 that are continuously formed in a lateral width direction of the bottom face part 13, four liquid leakage prevention piece parts 18 formed between the first side wall parts 14 and 15 and the second side wall parts 16 and 17, and a pair of engagement parts 19 and 20 that are continuously formed on the tip side of the second side wall parts 16 and 17. This structure enables the assembled box 10 to be stored in a sheet-like body 11 and assembled into a box-like body 12 during usage, and enables formation of the assembled box 10 that facilitates securing of a storage space and is easily handled.SELECTED DRAWING: Figure 1

Description

The present invention relates to an assembled box, and in particular, it can be laminated and delivered in a sheet shape, delivered and stored, and can be easily assembled into a box shape without using an adhesive at the time of use, and has durability and heat resistance. Regarding a braided box with excellent sex.

As the conventional paper box 100, the structures shown in FIGS. 7 (A) to 7 (C) are known. 7 (A) and 7 (B) are plan views illustrating the conventional paper box 100. FIG. 7C is a perspective view illustrating the conventional paper box 100.

FIG. 7A shows an unfolded state before assembling the paper box 100. The paper box 100 mainly includes a bottom wall 101 and a pair of side walls 102 and 103 formed around the bottom wall 101. It has a connecting piece 104 formed between the side walls 102 and 103, and a connecting piece 105 fixed with an adhesive.

As a method of assembling the paper box 100, as shown in FIG. 7B, the operator first bends the side walls 102 and 103 along the creases 106 and 107 (see FIG. 7A), respectively, to form an adhesive. The bonded side walls 102 and 103 have a double wall structure. Next, the operator attaches the connecting piece 105 to one of the connecting pieces 104 with an adhesive, and then supplies the connecting piece 105 to the automatic box making machine in that state.

After that, in the automatic box making machine, as shown in FIG. 7C, the side walls 102 and 103 are erected against the bottom wall 101, and the connecting piece 104 is placed in the direction of the notch 106 formed in the side walls 102 and 103. The paper box 100 is completed by attaching the connecting piece 104 to the side walls 102 and 103 in the notch 106 with an adhesive (see, for example, Patent Document 1).

Japanese Patent No. 4435359

As described above, in the assembling work of the paper box 100, in order to improve the work efficiency, a dedicated automatic box making machine is required, and there is a problem that up-front investment such as purchasing an automatic box making machine is required. ..

A user who does not own the automatic box making machine needs to purchase and use the paper box 100 in a state assembled by the manufacturer. Therefore, on the user side, it is necessary to purchase and stock the box-shaped paper box 100, and it is necessary to secure a space for storing a large number of paper boxes 100, and there is a problem that the usability is poor. Further, when the user purchases the assembled paper boxes 100 in bulk and requests the delivery, the packing state becomes large and the delivery amount increases, so that there is a problem that it is difficult to reduce the delivery cost.

In the recent corona sickness, the number of restaurants that take out is increasing in order to prevent virus infection through droplets when eating and drinking in the restaurant. A customer who purchases food from the above restaurant carries the food in a state where the food is served in the paper box 100, but when the bottom wall 101 has a single bottom, the strength of the paper box 100 is weak and the bottom wall 101 is easily bent. There is also a risk of bottoming out. In order to prevent the above danger, it is necessary to use a thick paper material. In this case, the cost cost increases, an automatic box making machine dedicated to thick paper is required, and the manufacturing cost also increases. There is.

In particular, when the dish is warm or when a dish containing a liquid such as soup is served, the bottom wall 101 of the paper material tends to be soft, and there is a problem that the bottom-out phenomenon is likely to occur. When the bottom wall 101 has a single bottom, the heat of cooking is easily transmitted to the user who carries the paper box 100 through the bottom wall 101, and there is a risk of burns.

In particular, in the take-out situation in Corona, there is a problem that it is difficult to secure a new storage space for a large number of containers for take-out because there are many restaurants that carry out take-out business while also conducting in-store sales. Furthermore, paper containers are attracting attention as the movement to remove plastics accelerates from the viewpoint of environmental protection, but paper containers are also required to have structural measures to prevent burns when carrying hot dishes. There is.

The present invention has been made in view of the above circumstances, and can be laminated, delivered, and stored in a sheet-like body, and can be easily assembled into a box-like body without using an adhesive at the time of use. It is an object of the present invention to provide an assembled box having excellent durability, heat resistance and the like.

The assembled box of the present invention is an assembled box that is stored as a sheet-shaped body and is used by assembling the sheet-shaped body into a box-shaped body, and has a double-bottomed structure having a space portion penetrating in the first direction. A pair of first side wall portions having a double wall structure formed in a second direction intersecting the first direction of the bottom surface portion, and a bottom surface portion formed in the first direction of the bottom surface portion. It is characterized by comprising a pair of second side wall portions having a double wall structure, and a liquid leakage prevention piece portion formed between the first side wall portion and the second side wall portion. ..

Further, in the assembled box of the present invention, in the sheet-like body, the bottom surface portion and the first side wall portion are continuously and integrally formed, and are formed in a bag shape sharing the space portion. It is characterized by that.

Further, in the assembled box of the present invention, a locking receiving portion formed on at least one of the bottom surface portion or the first side wall portion surrounding the space portion and the first direction of the second side wall portion. A locking portion, which is formed on the tip end side of the box and is inserted into the space portion in the box-shaped body and at least a part thereof is led out to the outside of the space portion via the locking receiving portion. Further prepared.

Further, in the assembled box of the present invention, no adhesive is required when assembling the box-shaped body from the sheet-shaped body, and the liquid leakage prevention piece portion is inserted into the inside of the second side wall portion. It is characterized by being supported.

Further, in the assembled box of the present invention, the sheet-shaped body is formed of a base material having a decorated front surface and an undecorated back surface, and in the box-shaped body, the bottom surface portion and the first first. The design surface of the side wall portion and the second side wall portion is characterized in that it is formed only from the surface of the base material.

Further, in the assembled box of the present invention, the base material is a paper material coated with a resin material satisfying at least one of heat resistance, oil resistance and water resistance.

The assembled box of the present invention has a bottom surface portion having a double bottom structure and first and second side wall portions having a double wall structure, so that the bottom surface portion and the bottom surface portion can be used in a box-shaped body. An air layer is formed between the first and second side wall portions. With this structure, even when hot dishes are served on the box, the thermal conductivity is low, and it is possible to realize a structure that is not easily burned when the user carries the box.

Further, in the assembled box of the present invention, the bottom surface portion and the first side wall portion have a double bottom structure and a double wall structure in the sheet-like body, so that the number of locking points in the box-like body is reduced and the user. Easy to assemble. In addition, by forming the bottom surface portion and the first side wall portion into an integrated continuous structure, a pair of side sides of the bottom surface portion is strongly reinforced, and a structure in which the bottom surface portion is not easily bent or warped is realized. To.

Further, in the assembled box of the present invention, the locking portion on the tip end side of the second side wall portion is inserted into the space portion, and a part of the locking portion is locked to the locking receiving portion, whereby the sheet-like body is formed. Can be assembled into a box-shaped body. With this structure, the locking portion is firmly locked to the locking receiving portion, which makes it difficult to eliminate the locked state while using the assembled box, and the user can safely use the assembled box. can.

Further, in the assembled box of the present invention, the sheet-shaped body can be assembled into a box-shaped body without using an adhesive, and the user can store the sheet-shaped body and assemble it into a box-shaped body when using it. .. With this structure, it is possible to stack and store a plurality of sheet-shaped assembled boxes, it is easy to secure a storage space, and the assembled box is easy for the user to handle.

Further, in the assembled box of the present invention, the design surface of the box-shaped body is composed of only the surface side of the base material, so that only the surface side of the base material may be subjected to decorative processing such as printing, and the manufacturing cost is high. Can be reduced.

Further, in the braided box of the present invention, by using a paper material coated with a resin material having excellent heat resistance, oil resistance or water resistance as a base material, warm dishes can be served in the braided box and the dishes can be served. The assembled box can be heated in a range, and the user can use it comfortably. In addition, from the viewpoint of deplasticization, it is possible to reduce the amount of plastic and the pollution of marine plastic.

It is a top view explaining the base material of the assembly box which is one Embodiment of this invention. It is (A) plan view and (B) sectional view explaining the sheet-like body of the assembled box which is one Embodiment of this invention. It is (A) perspective view and (B) perspective view explaining the box-shaped body of the assembled box which is one Embodiment of this invention. It is (A) plan view and (B) plan view explaining the sheet-like body of the assembled box which is another embodiment of this invention. It is a perspective view explaining the box-shaped body of the assembled box which is another embodiment of this invention. It is a perspective view explaining the box-shaped body of the assembled box which is another embodiment of this invention. It is (A) plan view, (B) plan view, (C) perspective view explaining the conventional paper box.

Hereinafter, the assembled box 10 according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. In the following description of the present embodiment, the same code number will be used for the same member in principle, and the repeated description will be omitted. Further, the vertical direction indicates the height direction of the assembled box 10, the left-right direction indicates the horizontal width direction of the assembled box 10, and the front-rear direction indicates the vertical width direction of the assembled box 10.

FIG. 1 is a plan view illustrating the base material 11A in which the sheet-like body 11 of the assembled box 10 of the present embodiment is developed. FIG. 2A is a plan view illustrating the sheet-like body 11 of the assembled box 10 of the present embodiment. 2 (B) is a cross-sectional view of the sheet-like body 11 of the assembled box 10 shown in FIG. 2 (A), and shows a cross-sectional view in the direction of the AA line. 3A and 3B are perspective views illustrating the box-shaped body 12 of the assembled box 10 of the present embodiment.

In the assembled box 10 of the present embodiment, the assembled box 10 of the sheet-shaped body 11 is sold in a state where a plurality of sheets are laminated, for example, one set of 10 sheets. After purchasing the sheet-shaped body 11, the user can store the assembled box 10 in a storage space such as a shelf in the laminated state. Then, when the user is a restaurant, when the customer takes out the food, the assembled box 10 assembled from the sheet-shaped body 11 to the box-shaped body 12 is used. That is, in the assembled box 10, by assembling the sheet-shaped body 11 into the box-shaped body 12 each time it is used, the assembled box 10 at the time of storage does not become bulky, and effective utilization of the storage space is realized.

The sheet-shaped body 11 of the present embodiment means a sheet-shaped assembled box 10 before assembling, and the box-shaped body 12 is a three-dimensional assembled box 10 assembled from the sheet-shaped body 11. To say.

As shown in FIG. 1, the assembled box 10 is mainly formed by a substantially square bottom surface portion 13 and a pair of first side wall portions 14 continuously formed in the vertical width direction (paper surface front-rear direction) of the bottom surface portion 13. , 15, a pair of second side wall portions 16, 17 formed continuously in the width direction (paper surface left-right direction) of the bottom surface portion 13, first side wall portions 14, 15 and second side wall portions 16, It is provided with four liquid leakage prevention piece portions 18 formed between 17 and a pair of locking portions 19 and 20 continuously formed on the tip end side of the second side wall portions 16 and 17. In the present embodiment, the vertical width direction (paper surface front-back direction) of the bottom surface portion 13 corresponds to the first direction of the claims, and the horizontal width direction (paper surface left-right direction) of the bottom surface portion 13 corresponds to the first direction of the claims. Corresponds to two directions.

The base material 11A constituting the sheet-like body 11 is a paperboard for a primary food container having water resistance, for example, a paper material of the OK flute PRO series manufactured by Oji Materia Co., Ltd. or a micro flute which is a thin corrugated cardboard material. G ・ F ・ E flute) is used. In addition, the braided box 10 may be used as a tray for frozen foods or for serving hot dishes for take-out at restaurants. In this case, as the base material 11A having water resistance, oil resistance, heat resistance, etc., the paper material is a resin material such as polyethylene, polypropylene, polyethylene teflate, polybutylene tephthalate, or a biodegradable resin such as polylactic acid. It is also possible to use a material laminated with. As a result, by forming the heat-resistant container with the base material 11A made of a paper material, it is possible to reduce the amount of plastic and the contamination of marine plastic from the viewpoint of deplasticization.

The braided box 10 is used, for example, as a stuffing box for take-out, an outer box or section box for New Year dishes, a container for cup noodles, a baking box for pancakes, and the like. The design surface of the assembled box 10 as the box-shaped body 12 is formed only from the surface of the base material 11A. With this structure, the printing process as a decoration for the design surface of the assembled box 10 and the laminating process of the resin material need only be performed on the surface of the base material 11A, and the manufacturing cost can be reduced.

Further, as shown in FIG. 1, the bottom surface portion 13 has an inner surface portion 13A constituting the internal storage space 31 (see FIG. 3A) in the case of the box-shaped body 12, and an outer surface portion facing the inner surface portion 13A. It has 13B and has a double bottom structure. Similarly, the pair of first side wall portions 14 and 15 also have inner surface portions 14A and 15A and outer surface portions 14B and 15B, respectively, and have a double wall structure. Further, the pair of second side wall portions 16 and 17 also have inner surface portions 16A and 17A and outer surface portions 16B and 17B, respectively, and have a double wall structure. Although the details will be described later, the outer surface portion 13B of the bottom surface portion 13 is continuously formed on the tip end side of the outer surface portions 14B and 15B of the first side wall portions 14, 15, respectively, and the sheet-like body 11 (FIG. 2 (FIG. 2). In A)), the outer surface portions 13B are attached to each other via an adhesive.

As shown in FIG. 2A, in the assembled box 10 of the sheet-shaped body 11, at the boundary between the inner surface portions 14A and 15A and the outer surface portions 14B and 15B (see FIG. 1) in the first side wall portions 14 and 15. The outer surface portions 14B and 15B and the outer surface portion 13B (see FIG. 1) of the bottom surface portion 13 are respectively bent downward on the paper surface. Then, as shown by the circle 21 in FIG. 2B, a part of the outer surface portion 13B of the bottom surface portion 13 is superimposed along the horizontal width direction (paper surface left / right direction) of the bottom surface portion 13, and the overlapped region thereof. Is attached by an adhesive.

With this structure, in the sheet-like body 11, the bottom surface portion 13 and the first side wall portions 14, 15 are formed in a bag shape penetrating in the width direction (left-right direction of the paper surface), and a common space portion 22 is formed inside the bottom surface portion 23. Is formed and is formed as a double bottom structure. The assembled box 10 as the box-shaped body 12 is used by serving food or the like in the internal storage space 31, but the bottom surface portion 13 is in a bent state due to the weight of the food or the like, and the bottom surface portion 13 is described above. An air layer is formed in the space 22 through the penetrating region. As a result, the user usually carries the assembled box 10 by holding it with both hands around the bottom surface portion 13, but the bottom surface portion 13 has a double bottom structure having an air layer via the space portion 22, which causes heat. The conductivity is low, and a structure that is not easily burned is realized.

As described above, in the first side wall portions 14, 15 and the second side wall portions 16, 17, the inner surface portions 14A, 15A, 16A, 17A and the outer surface portions 14B, 15B, 16B, 17B are adhesives, respectively. Similar to the bottom surface portion 13, the double wall structure having an air layer between them is formed, so that the first side wall portions 14, 15 and the second side wall portions 16, 17 also have thermal conductivity. Is lowered, and a structure that is not easily burned is realized.

Further, when the user carries the assembled box 10 on which dishes and the like are arranged, the bottom surface portion 13 has a structure fixed by an adhesive, so that the fixed portion is hard to peel off and the double bottom structure comes off during use. It becomes difficult and you can safely carry hot dishes.

The four liquid leakage prevention piece portions 18 are the four corner portions of the bottom surface portion 13, respectively, and are formed between the first side wall portions 14, 15 and the second side wall portions 16, 17. The liquid leakage prevention piece portion 18 is continuous with the inner surface portions 13A of the bottom surface portion 13, the inner surface portions 14A and 15A of the first side wall portions 14 and 15, and the inner surface portions 16A and 17A of the second side wall portions 16 and 17. Is formed.

As shown in the figure, the liquid leakage prevention piece 18 has, for example, a shape in which two pieces of isosceles triangle having the same shape are arranged side by side. When the liquid leakage prevention piece 18 is assembled into the box-shaped body 12, the liquid leakage prevention piece 18 is bent at the boundary thereof, and the isosceles right triangle pieces are overlapped with each other to form the first side wall portions 14 and 15. The ends of the second side wall portions 16 and 17 come into contact with each other, and an internal storage space 31 (see FIG. 3A) that does not leak liquid is formed above the bottom surface portion 13.

Further, the locking portions 19 and 20 are continuously formed on the tip end side of the outer surface portions 16B and 17B of the second side wall portions 16 and 17. The width W1 of the locking portions 19 and 20 is formed to have a width substantially equal to the width W2 of the space portion 22 (see FIG. 2B) of the bottom surface portion 13, and the tip portions thereof are respectively. A pair of locking pieces 19A and 20A are formed. In the forming region of the locking pieces 19A and 20A, the width W3 of the locking portions 19 and 20 is wider than the width W2 of the bottom surface portion 13 by the width W4 of the pair of locking pieces 19A and 20A.

FIG. 3A shows a state in which the box-shaped body 12 of the assembled box 10 is viewed from above. In the box-shaped body 12, the first side wall portions 14, 15 and the second side wall portions 16, 17 are By standing up against the bottom surface portion 13, an internal storage space 31 for storing food and the like is formed above the bottom surface portion 13. The four liquid leakage prevention piece portions 18 are also erected with respect to the bottom surface portion 13 and bent outward with respect to the internal storage space 31 of the box-shaped body 12, so that the first side wall portions 14, 15 are formed. And the second side wall portions 16 and 17 come into contact with each other at their ends.

At this time, during the assembly work of the user, the outer surface portions 16B, 17B and the locking portion 19 are formed at the boundary between the inner surface portions 16A, 17A and the outer surface portions 16B, 17B from the sheet-shaped body 11 shown in FIG. , 20 are bent downward on the paper surface, respectively, and the locking portions 19 and 20 are inserted into the space portion 22 (see FIG. 2B) of the bottom surface portion 13. By this assembly work, the second side wall portions 16 and 17 are also formed as a double wall structure. As described above, the liquid leakage prevention piece 18 is inserted between the inner surface portions 16A and 17A and the outer surface portions 16B and 17B of the second side wall portions 16 and 17, so that the liquid leakage prevention piece portion 18 can be fixed by the adhesive. It becomes unnecessary.

With this structure, in the assembled box 10 as the box-shaped body 12, the liquid leakage prevention piece portion 18 is erected together with the first side wall portions 14, 15 and the second side wall portions 16, 17 to be assembled. Even when a liquid is put into the internal storage space 31 of the box 10, a structure that does not leak is realized. Further, the liquid leakage prevention piece 18 is hidden inside the second side wall portions 16 and 17, so that the appearance is improved and the food and the like are arranged in the internal storage space 31. The degree of freedom is also increased.

FIG. 3B shows a state in which the box-shaped body 12 of the assembled box 10 is viewed from below. As shown in FIG. 1, the four locking receiving portions 23 and 24 are the bottom portion 13 and the first. It is formed as an opening in the vicinity of the boundary region with the side wall portions 14 and 15. Then, after the second side wall portions 16 and 17 are bent to the outside of the internal storage space 31, the locking portions 19 and 20 are inserted into the space portion 22 (see FIG. 2B) of the bottom surface portion 13. After that, a part of the locking pieces 19A and 20A of the locking portions 19 and 20 is led out from the space portion 22 via the locking receiving portions 23 and 24, and the locking portions 19 and 20 are locked receiving portions. The box-shaped body 12 is completed by being locked to the 23 and 24.

As described above using FIG. 2A, the widths W4 of the locking pieces 19A and 20A of the locking portions 19 and 20 are about 2.5 mm, respectively, and the widths W1 of the locking portions 19 and 20 are It is formed with a width substantially equal to the width W2 of the space portion 22 (see FIG. 2B) of the bottom surface portion 13. Then, in the forming region of the locking pieces 19A and 20A of the locking portions 19 and 20, the width W3 of the locking portions 19 and 20 (see FIG. 2A) is a pair from the width W2 of the bottom surface portion 13. It becomes wider by the width W4 of the locking pieces 19A and 20A.

Due to this structure, when the assembled box 10 is used as the box-shaped body 12, the end sides 19B and 20B (see FIG. 1) of the locking portions 19 and 20 are inside the space portion 22 due to the relationship between the widths W1 and W2. Abuts on the first side wall portions 14 and 15. Then, the locking portions 19 and 20 are slightly bent in the space portion 22, and the locking pieces 19A and 20A led out to the outside are tilted in either the vertical or diagonal direction with respect to the locking receiving portions 23 and 24. , It becomes difficult to come off from the locking receiving portions 23 and 24.

As a result, when the food or the like is put into the internal storage space 31 of the assembled box 10 and carried, the bottom surface portion 13 and the inserted locking portions 19 and 20 are further bent by the weight of the food and the like, so that the locking pieces 19A and 20A are further bent. Is more difficult to remove from the locking receiving portions 23 and 24. Then, by reliably maintaining the locked state of the locking portions 19 and 20, the box-shaped body 12 is less likely to collapse due to the weight of the cooking or the like, and the cooking or the like can be safely carried.

Further, in the assembled box 10, the structure is such that only the second side wall portions 16 and 17 are locked, the minimum necessary locking points are set, and the structure is such that the assembly can be performed without using an adhesive. Easy to assemble.

Further, in the assembled box 10, a double bottom structure of the bottom surface portion 13 and a double wall structure of the first side wall portions 14, 15 and the second side wall portions 16, 17 are formed, and the first side wall portion 14, 15 is bent in a state where the bottom surface portion 13 is continuously formed integrally with the bottom surface portion 13 over the horizontal width direction (paper surface left-right direction). Further, as shown by the circle 21 in FIG. 2B, a part of the outer surface portion 13B of the bottom surface portion 13 is superposed along the horizontal width direction (paper surface left / right direction) of the bottom surface portion 13, and the superposed region thereof is overlapped. Is attached by an adhesive.

Due to this structure, at the bent portion of the boundary between the bottom surface portion 13 and the first side wall portions 14, 15, the width direction (left-right direction of the paper surface) thereof is the same as in the case where, for example, a support rod for strength reinforcement is arranged. Reinforced structure. As a result, the bottom surface portion 13 is less likely to bend or warp in the lateral width direction (left-right direction of the paper surface), and the desired strength as the box-shaped body 12 can be obtained. As a result, it becomes possible to reduce the thickness of the base material 11A forming the braided box 10, and for example, the lightest paper material of 190 g / m ² can be used as the base material 11A, and the cost cost is reduced. be able to. Further, it is possible to prevent the base material 11A from becoming thicker than necessary, and by forming the sheet-like body 11 using the existing manufacturing apparatus, the capital investment cost can be suppressed.

Here, a destructive test of the assembled box 10 of the box-shaped body 12 was performed, and the strength of the assembled box 10 was measured. In this test, the structures of the assembled boxes of Comparative Example 1 and Example 2 were prototyped for the assembled box 10, a destructive test was conducted under the same test conditions as the assembled box 10, and the strength was compared with the assembled box 10. rice field. Then, as the test conditions, a test device of Tencilon UTM-4 manufactured by Toyo Sokki Co., Ltd. was used, the assembled box 10 was sandwiched from the height direction thereof, compressed at a load speed of 10 mm / min, and the value at the time of fracture kgf. Was measured. In the above-mentioned destructive test, the assembled boxes 10 and the assembled boxes of Comparative Example 1 and Example 2 were each subjected to four fracture tests, and the average value was calculated.

First, in the structure of the assembled box 10 of the present embodiment, as shown in FIGS. 3 (A) and 3 (B), the locking portions 19 and 20 are connected to the space portion 22 (see FIG. 2 (B)). The structure is such that the locking pieces 19A and 20A are inserted and locked by the locking receiving portions 23 and 24. In this structure, according to the above-mentioned fracture test, the value at the time of the first destruction is 24.2 kgf, the value at the time of the second destruction is 23.0 kgf, and the value at the time of the third destruction is 27.9 kgf, at the time of the fourth destruction. The value of was 26.5 kgf, and the average value at the time of destruction was 25.4 kgf.

Next, the structure of the assembled box of Comparative Example 1 is the same as that of the assembled box 10, but the bottom surface portion is a single bottom, and the first side wall portion and the second side wall portion are single. The structure is a wall and does not have a locking portion and a locking receiving portion. In this structure, according to the above-mentioned fracture test, the value at the time of the first destruction is 15.8 kgf, the value at the time of the second destruction is 17.9 kgf, the value at the time of the third destruction is 14.5 kgf, and the value at the time of the fourth destruction is 14.5 kgf. The value of was 17.9 kgf, and the average value at the time of destruction was 16.5 kgf. It should be noted that the four liquid leakage prevention pieces are in a state of being bent outward of the second side wall portion without being supported by other members.

Next, the structure of the assembled box of the second embodiment is the same as that of the assembled box 10, but the overall size, the bottom surface portion, and the structures of the first and second side wall portions are the same, but the locking portion and the locking portion are locked. It has a structure that does not have a receiving part. That is, the structure of the assembled box of the second embodiment is a modified example of the assembled box 10, and the second side wall portion is attached to the bottom surface portion with tape. In this structure, according to the above-mentioned destruction test, the value at the time of the first destruction is 21.9 kgf, the value at the time of the second destruction is 22.3 kgf, the value at the time of the third destruction is 21.5 kgf, and the value at the time of the fourth destruction is 21.5 kgf. The value of was 20.5 kgf, and the average value at the time of destruction was 21.6 kgf.

From the above, the strength of the structure of the assembled box 10 of the present embodiment and the structure of the assembled box of the second embodiment is significantly improved as compared with the structure of the assembled box of Comparative Example 1. As described above, it has been proved that the strength of the assembled box 10 is improved by bending the first side wall portions 14 and 15 in a state of being continuously and integrally formed with the bottom surface portion 13. .. Further, it was proved that the strength of the assembled box 10 is further improved by firmly locking the locking portions 19 and 20 with the locking receiving portions 23 and 24 using the space portion 22.

Next, the assembled box 40 according to another embodiment of the present invention will be described in detail with reference to FIGS. 4 to 5. The braided box 40 has a structure in which a lid 43 is added to the braided box 10 described above, and its purpose and effect are the same as those of the braided box 10 described above. Therefore, in the following explanation of the assembled box 40, the structure different from that of the assembled box 10 will be mainly described, and in principle, the same number will be used for the same member as the assembled box 10, and the repeated explanation will be omitted. do. Further, in the description of the assembled box 40, FIGS. 1 to 3 will be referred to as appropriate.

FIG. 4A is a plan view illustrating the base material 41A in which the sheet-like body 41 of the assembled box 40 of the present embodiment is developed. FIG. 4B is a plan view illustrating the sheet-shaped body 41 of the assembled box 40 of the present embodiment. FIG. 5 is a perspective view illustrating the box-shaped body 42 of the assembled box 40 of the present embodiment.

As shown in FIG. 4A, the assembled box 40 is mainly formed of a substantially square bottom surface portion 13 and a pair of first pair formed continuously in the vertical width direction (paper surface front-rear direction) of the bottom surface portion 13. The side wall portions 14, 15 and a pair of second side wall portions 16, 17 continuously formed in the lateral width direction (paper surface left and right direction) of the bottom surface portion 13, and the first side wall portions 14, 15 and the second side wall portion. The four liquid leakage prevention piece portions 18 formed between the portions 16 and 17, and the pair of locking portions 19 and 20 continuously formed on the distal end side of the second side wall portions 16 and 17, and the inside. It is provided with a lid portion 43 that can open and close the storage space 31 (see FIG. 5) so as to be openable and closable.

In the present embodiment, the vertical width direction (paper surface front-back direction) of the bottom surface portion 13 corresponds to the first direction of the claims, and the horizontal width direction (paper surface left-right direction) of the bottom surface portion 13 corresponds to the first direction of the claims. Corresponds to two directions. Further, the base material 41A constituting the sheet-shaped body 41 is made of the same material as the above-mentioned base material 11A.

In the sheet-shaped body 41 shown in FIG. 4 (B), first, from the state of the base material 41A shown in FIG. 4 (A), the bottom surface portion is formed at the boundary between the inner surface portion 14A and the outer surface portion 14B of the first side wall portion 14. The tip side is bent downward from the outer surface portion 14B including the outer surface portion 13B of 13. Next, in the first side wall portion 15, the outer surface portion 15B is bent downward on the paper surface at the boundary between the inner surface portion 15A and the outer surface portion 15B, and then the overlapping region between the outer surface portions 15B is fixed by an adhesive. By doing so, the sheet-like body 41 is completed.

With this structure, also in the sheet-shaped body 41, the bottom surface portion 13 and the first side wall portions 14, 15 are formed in a bag shape penetrating in the width direction (left-right direction of the paper surface) as in the sheet-shaped body 11. A common space portion 22 is formed inside the space portion 22 and is formed as a double bottom structure.

FIG. 5 shows a state in which the box-shaped body 42 of the assembled box 40 is viewed from above. In the box-shaped body 42, the first side wall portions 14, 15 and the second side wall portions 16, 17 are the bottom surface portions 13. An internal storage space 31 for storing food and the like is formed above the bottom surface portion 13 by standing upright. Further, in the assembled box 40, the lid portion 43 is disposed above the internal storage space 31, and the locking piece 43A of the lid portion 43 is appropriately inserted into the locking receiving portion 44 of the first side wall portion 14. As a result, the internal storage space 31 can be opened and closed freely.

The user can carry the assembled box 40 in a state where the internal storage space 31 in which dishes and the like are arranged is closed by the lid 43 without using a wrap or the like, and hygiene can be improved. can. Then, the same effect as that of the above-mentioned assembled box 10 can be obtained in the assembled box 40 as well.

In the present embodiment, the case where the assembled boxes 10 and 40 of the box-shaped bodies 12 and 42 have a substantially rectangular parallelepiped shape has been described, but the present invention is not limited to this case. For example, FIG. 6 is a perspective view of the box-shaped body of the assembled box 50 according to another embodiment of the present invention as viewed from above. The assembled box 50 has the same structure as the assembled box 10 in the form of a sheet, but by making each member a small shape, the assembled box 10 is miniaturized as a whole and has a cubic shape. In this case, for example, the braided box 10 is used as an outer box for new year dishes, a plurality of braided boxes 50 are arranged in the braided box 10, and the braided box 50 is used as an inner box for individual dishes. You can also.

Further, the case where the locking portions 19 and 20 are continuously formed on the tip end side of the outer surface portions 16B and 17B of the second side wall portions 16 and 17 has been described, but the present invention is not limited to this case. For example, the second side wall portions 16 and 17 are integrally formed with the bottom surface portion 13, and the locking portions 19 and 20 are continuously formed on the distal end side of the outer surface portions 14B and 15B of the first side wall portions 14 and 15. It may be done. Further, although not shown, the bottom surface portion 13 alone has a bag-shaped double bottom structure, and the first side wall portions 14 and 15 and the second side wall portions 16 and 17 are double bottom portions 13. It may be locked to the bottom structure. Further, according to the second embodiment, the second side wall portions 14 and 15 and the bottom surface portion 13 are attached by, for example, tapes or the like without forming the locking portions 19 and 20. It is also possible to realize the double wall structure of the side wall portions 14 and 15 of the box-shaped body 12.

Further, although not shown, the assembled box of the present embodiment is not limited to the case where the bottom surface portion has a rectangular shape. For example, the bottom surface of the box may have a polygonal shape such as a triangle or a pentagon. Also in this case, the bottom surface of the box has a double bottom structure, the plurality of side walls have a double wall structure, and when the box is used, an adhesive is used from the sheet to the box. By having a structure that can be assembled without any problem, the same effect as that of the above-mentioned assembled box 10 can be obtained. In addition, various changes can be made without departing from the gist of the present invention.

10,40,50 Assembled box 11,41 Sheet-shaped body 11A, 41A Base material 12,42 Box-shaped body 13 Bottom part 14,15 First side wall part 16,17 Second side wall part 18 Liquid leakage prevention piece 19 , 20 Locking part 19A, 20A Locking piece 22 Space part 23,24 Locking receiving part 31 Internal storage space 43 Lid part

Claims (6)

It is an assembled box that is stored in a sheet-like body and is used by assembling the sheet-like body into a box-like body.
A bottom portion having a double bottom structure having a space portion penetrating in the first direction,
A pair of first side wall portions having a double wall structure formed in a second direction intersecting the first direction of the bottom surface portion, and a pair of first side wall portions.
A pair of second side wall portions having a double wall structure formed in the first direction of the bottom surface portion, and a pair of second side wall portions.
A braided box comprising: a liquid leakage prevention piece portion formed between the first side wall portion and the second side wall portion. The first aspect of the sheet-like body is characterized in that the bottom surface portion and the first side wall portion are continuously and integrally formed, and are formed in a bag shape sharing the space portion. The described assembly box. A locking receiving portion formed on at least one of the bottom surface portion and the first side wall portion surrounding the space portion,
It is formed on the tip end side of the second side wall portion in the first direction, and is inserted into the space portion in the box-shaped body, and at least a part thereof is inserted into the space portion via the locking receiving portion. The assembled box according to claim 2, further comprising a locking portion that is led out to the outside. A claim is characterized in that an adhesive is not required when assembling the sheet-shaped body into the box-shaped body, and the liquid leakage prevention piece portion is inserted into and supported inside the second side wall portion. The assembled box according to any one of items 1 to 3. The sheet-like body is formed of a base material having a decorated front surface and an undecorated back surface.
Claim 1 to claim 1, wherein in the box-shaped body, the design surface of the bottom surface portion, the first side wall portion, and the second side wall portion is formed only from the surface of the base material. The assembled box according to any one of 4. The assembled box according to claim 5, wherein the base material is a paper material coated with a resin material that satisfies at least one of heat resistance, oil resistance, and water resistance.

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