JPH03289439A - Collapsible container - Google Patents

Abstract

PURPOSE:To promote ease of handling and enable transportation of articles which have to be thermally insulated or kept cool by providing a bottom plate, an upper opening frame, long side plates facing each other and a right and left short side plate so that each of them is pivotally supported in inwardly collapsible manner, wherein all of these plates are made of thermally insulated panels. CONSTITUTION:A collapsible container A has a construction such that short side plates 4, 5 are folded upward in springlike manner about hinges 14 and long side plates 3, 3 are folded about their hinges 11 and an upper opening frame 2 is brought close to a bottom plate 1 and folded. For assembling, the frame 2 is separated from the plate 1 and the plates 3, 3 are extended and the plates 4, 5 are caused to swing in suspended manner so that a recess 15 formed on the lower edge of the plates 4, 5 is engaged with a protrusion 16 formed on the plate 1. Further, a recess 7 on the side of each of the plate 4, 5 is engaged with a protrusion 6 formed on an upper and lower half body 3a, 3b to hold the plates 4, 5 and 3, 3 at an upstanding position. Each of the plate 1, plates 3, 3 and 4, 5 is made of an insulation panel 10 including insulating material 21 made from synthetic resin foam.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention, as disclosed in Japanese Patent Application Laid-open No. 158645/1982, consists of a bottom plate, a long side plate facing an upper opening frame, and an upper opening frame. The present invention relates to a folding container that is folded close to a bottom plate, and more specifically, relates to a technique for greatly increasing the heat insulation properties of such a folding container.

[Technology 1] Conventionally, as shown in Fig. 16, it was composed of a bottom plate 1, an upper opening frame 2, long side plates 3, 3 facing each other, and left and right short side plates 4°5, with the long side plate 3 serving as the upper half body. Separated into 3a and lower half 3b,
The upper and lower halves 3m and 3b are pivotally connected to be foldable inwardly, the lower edge of the lower half 3a is pivotally connected to the upper opening frame 2 so as to be foldable inwardly, and the lower half 3b is The lower edge is pivotally connected to the bottom plate 1 so that it can be folded inwardly, and the short side plates 4,
5 is pivoted at its upper end to the upper WSWIA mouth frame 2 so as to be foldable inward, and protrusions are formed at the side ends of the plates 4 and 5, and the side ends of the upper and lower halves 3 m and 3 b In a folding container in which a recess 7 is formed in which the protrusion engages when the folding container is assembled, the bottom plate 1, the long side plate 3f3, and the III plates 4 and 5 are made of solid synthetic resin without any heat insulation properties. It was made of a board.

[Problem to be solved by the invention] By the way, the bottom plate 1,! ! klI! Since the plates 3, 3 and [111 plates 4, 5 were made of solid synthetic resin plates with no heat insulation properties, it was difficult to provide heat insulation properties to the foldable containers made of these, making them compact. Although it is easy to use because it can be folded up, it is not suitable for delivering items that require heat or cold retention, such as lunch boxes for home delivery or delicatessen ingredients. It is also conceivable to integrate the bottom plate, long side plates, and short side plates to make the entire container into an insulated container as in Japanese Patent Publication No. 62-7066, but the container itself and the molding mold would also be larger. However, such large containers cannot be folded, making them difficult to handle and increasing costs.

The present invention was made in view of such problems,
Its purpose is to be foldable, easy to handle, and have sufficient insulation properties, making it suitable for delivering items that require heat or cold retention, such as boxed lunches for home delivery or side dish ingredients. The purpose is to provide a container that can be easily folded.

[Means for Solving the Problems] The foldable container of the present invention is composed of a bottom plate 1, an upper opening frame 2, long side plates 3, 3 facing each other, and left and right short side plates 4, 5,
The long side plate 3 is separated into a lower half 3a and a lower half 3b, and the upper and lower halves 3m and 3b are pivotally connected so that they can be folded inwardly,
The upper edge of the lower half 3a is pivotally connected to the upper opening frame 2 so that it can be folded inwardly, the lower edge of the lower half 3b is pivotally connected to the bottom plate 1 so that it can be folded inwardly, and the short side plate 4 and 5 are pivoted to be foldable inwardly to the upper opening frame 2 at the upper *S, and the IIj11 portion of the short gastric plates 4 and 5 and the upper and lower halves 3 m
.

A folding container is provided with a protrusion 6 formed on one of *mm of 3b and a recess 7 in which the protrusion 6 engages in the assembled state of the folding container on the other side, the bottom plate 1 and the long side plate 3.
The vj image is that the short side plates 4 and 5 are each formed as a heat insulating structure panel 10. .

Further, the upper frontage frame 2 is formed by a pair of upper frame bodies 24, 24 having a heat-insulating structure and having an L-shape in plan view, and further,
The bottom plate main body 23 is made up of a pair of bottom plate frames 22 and 22 that have a heat insulating structure similar to the upper frame 24 and are L-shaped in plan view.
It is characterized by holding the following.

Further, the L-shaped bottom plate frame 22 and upper frame body 24 are characterized in that bendable hinge portions 27 are formed at their corner portions.

[Function] In this way, the long side plate 3 facing the bottom plate 1 and the upper opening frame 2
, 3 and left and right short side plates 4, 5, the long side plate 3 is separated into a lower half body 3a and a lower half body 3b, and the upper and lower half bodies 3a,
3b is pivotally connected to the upper opening frame 2 so that it can be folded inwardly, the upper edge of the lower half 3a is pivotally connected to the upper opening frame 2 so that it can be folded inwardly, and the lower edge of the lower half 3b is pivotally connected to the bottom plate 1 so that it can be folded inwardly. The short side plates 4 and 5 are pivotally connected to the upper opening frame 2 at their upper ends so that they can be folded inwardly, so that they can be folded compactly and are easy to handle. Although it is easy to do, by making the bottom plate 1, long side plate 3, and @ side plate 4.5 each a heat insulating structure panel 10, sufficient heat insulation properties are provided to the bottom plate 1, long side plate 3, and short side plates 4, 5. However, the foldable containers made of these materials have sufficient heat insulation properties, making them suitable for transporting items that require heat retention or cold retention, such as boxed lunches for home delivery or delicatessen ingredients.

In addition, since the upper 5W40 frame 2 is formed by the pair of upper frames 24 and 24 that have a heat-insulating structure and are L-shaped in plan view, the upper opening frame 2 is also heat-insulated.
The upper half 3a of the long side plate 3 is rotatably supported on the upper opening frame 2, and the short side plates 4 and 5 are rotatably supported on the upper opening frame 2. This facilitates assembly and improves the ease of assembly. This is how it was done. Furthermore, the bottom plate main body 23 is held in a continuous manner surrounding the bottom plate main body 23 by holding the bottom plate main body 23 by a pair of bottom plate frames 22, 22 having an L-shape and having a heat insulating structure similar to the upper frame body 24 described above. 23 as well, the bottom plate main body 23 is connected to the pair of L-shaped bottom plate frames 22° 22.
can be easily held by the pair of bottom plate frames 22, 22! ! The lower half 3b of the klIl plate 3 can be easily assembled so as to be rotatably supported, thereby improving the ease of assembly.

In addition, the L-shaped bottom plate frame 22 and the top frame 24 are formed with bendable hinges WS27 at their corners, so that the L-shaped bottom plate frame 22 and the top frame 24
By bending at the hinge portion 27, the work of assembling the bottom plate main body 23 between the pair of bottom plate frames 22, 22 and the work of assembling the lower half body 3b of the long side plate 3 into the bottom plate frames 22, 22 can be easily and quickly performed. The ease of assembly has been greatly improved, and the short side plates 4, 5 and the lower half 3a can be rotatably assembled between the pair of upper frames 24 and 24 with ease. It was designed to improve the performance.

[Example 1 Embodiments of the present invention will be described in detail below based on the drawings.

As shown in FIGS. 1 and 3, the foldable container A includes a bottom plate 1, a substantially mouth-shaped upper opening frame 2, and opposing long side plates 3, 3.
The long side plate 3 has a lower half 3a and a lower half 3b connected via a hinge 11 so as to be bendable in a substantially dogleg shape. The upper edge portion of the lower half 3b is pivotally attached to the upper Sm mouth frame 2 via a hinge shaft 12 so as to be bendable, the lower edge portion of the lower half 3b is pivotably attached to the bottom plate 1 via a hinge shaft 13, and , the left short side plate 4 and the right short side plate 5 each have a hinge shaft 14 at their upper end.
It is pivotably attached to the upper frontage frame 2 via the . Thus, the folding container A is constructed by folding the short side plates 4 and 5 upward at the hinge shaft 14, bending the All plates 3 and 3 at the hinge 11, and bringing the upper opening frame 2 close to the bottom plate 1. It is designed so that it can be folded. Also, when assembling the folding container A, pull the top frame 2 away from the bottom plate 1! side plate 3
．． 3 is extended, the short side plates 4 and 5 are swung so as to hang down, and the recesses 15 formed at the lower edges of the short side plates 4 and 5 are fitted into the six places 16 formed on the bottom plate 1, and The recess 7 formed at the 111 part of the short side plates 4.5 is fitted into the protrusion 6 formed on the upper and lower halves 3m and 3b, and the short side plates 4, 5 and the long side plates 3,
3 to keep it standing. And foldable IS
In the folded state of A, the six stacks 8 protruding from the bottom surface of the bottom plate 1 of the upper folding container A enter the recessed part 9 of the upper opening frame 2 of the lower folding container A, and the upper and lower folding containers A and A are stacked so that they do not shift left and right and front and back. Then, the bottom plate 1, the long side plate 3, and the short side plates 4 and 5 are combined I! It is formed as a heat insulating structure panel 10 incorporating a resin foam as a heat insulating material 21. Such a heat-insulating structural panel 10 is made by filling and foaming a synthetic resin foam material such as urethane as a heat insulating material 21 into an outer skin layer 33 such as polypropylene. or,
The heat insulating structure panel 10 may have a hollow structure forming a heat insulating cavity therein.

As shown in FIGS. 4 and 5, the bottom plate frame 22 has a long side portion 25 and a short piece 11 portion 26 integrated into one resin molded product, and has a thin hinge portion in the middle of the length. 2
It is configured to be bendable at 7. A groove 28 is formed in the short side part 26 and the long side part 25. The bottom plate frame 22 is bent at the hinge [27] so as to form an L-shape in plan view, and the protrusion 29 formed on the circumference of the bottom plate main body 23 forms a recess in the bottom plate frame 22. 1
128, the bottom plate main body 23 is held by the pair of bottom plate frames 22°22.

The bottom plate frames 22, 22 are connected to each other by screwing or bonding with adhesive.

In addition, a pivot hole 30 is formed in the short side portion 26 of the bottom plate frame 22 at the time of molding.6 On the other hand, as shown in Fig. l! j
31 is formed, and the hinge shaft 13 is integrally molded with the outer skin layer 33 and has a protrusion inside the cut portion 31. The hinge shaft 13 is inserted into the pivot hole 30 of the short side 111 portion 26, and the lower half 3b is pivotally attached to the bottom plate frame 22.

As shown in FIGS. 6 and 7, the upper frame 24 has a long side portion 34 and a short side portion 35 that are made of a single resin molded product, and has a thin hinge in the middle of the length. Part 3
It is configured to be bendable at 6. Then, a meat percentage portion 37 is formed at both ends of the short side portion 35, and this meat! A pivot hole 38 is formed in the 11 portion 37. Furthermore, elongated hole recesses 39 are formed on both inner surfaces of the long side 11 portion 34. On the other hand, the upper part of the lower half 3a of the long side plate 3 has a cut-off part 62 shaped like rIt? ! The hinge shaft 12 is formed integrally with the outer covering layer 33 in this tapped portion 62.

Thus, the upper frame body 24 is folded into an L-shape in a plan view, and the upper opening frame 2 is formed by the pair of opposing upper frame bodies 24.24, and between the upper frame bodies 24.24, the pivotal support is provided. The hinge shaft 12 of the lower half body 3a is rotatably inserted into the hole 38, so that the lower half body 3a can be folded inward about the hinge shaft 12. The bottom plate frame 22 and the upper frame 24 each have a heat insulating structure by filling and foaming a synthetic resin foam material such as urethane as a heat insulating material 21 in an outer skin layer 33 such as polypropylene. In order to achieve such a heat insulating structure, a hollow structure with a heat insulating cavity formed inside may be used.

Furthermore, pivot shafts 51 are formed integrally with the outer skin layer 33 at the upper gA edges of the IIrLgA plates 4 and 5, and the long hole recesses 39 of the upper frame 24 are inserted into these pivot shafts 51. Thus, while the pivot shaft 51 can move up and down within the range of the elongated hole recess 39, the short side plates 4 and 5 can swing around their upper ends by the pair of upper frames 24 and 24. be. Also, short side plate 4
．． A handle recess 52 is formed in the upper outer surface of the container 5, so that the foldable container A in the assembled state can be carried.

Next, the pivot structure between the lower half body 3a and the lower half body 3b of the long side plate 3 will be explained.8 As shown in FIG. It is a resin molded product with a connecting hole 55 formed therein and a substantially U-shaped mounting leg 5.
4 are integrally formed.

Further, the upper coupling 14c56 shown in FIG. 15 is also a separately molded resin molded product, and a coupling hole 55 is formed in the upper coupling tool 56, and a substantially U-shaped mounting leg 57 is integrally formed. . Therefore, the upper and lower connecting PCs 5, 6, 53 are fitted into the recesses s58 of the upper and lower halves 3a, 3b formed with the heat insulating structure panel 10 at their mounting legs 57, 54, and are attached with adhesive, or these upper and lower connecting Both 56 and 53 are installed in the mold in advance, and the lower half 3a and the lower half 3 of the major scale plate 3
It may be made to be integrally molded with the outer skin layer 33 of b. Then, the pivot 61 is inserted through the connecting hole 55°55 of both the upper and lower connections 56.53, and the lower half 3a and the lower half 3b are connected to each other.
and are pivotably connected so that they can be bent freely. The shapes of the upper and lower connections 56 and 53 can be modified in various ways, and the same shapes may be used.

A protrusion 64 is formed at the lower end of the lower half 3a, and a protrusion 64 is formed at the lower end of the lower half 3b.
A recess 65 is formed at the upper end of the upper and lower halves 3 m, 3
In the extended state b, the protrusion 64 enters the recess 65,
This prevents a gap from forming between the upper and lower halves 3a and 3b in the assembled state, thereby preventing deterioration in heat insulation properties.

In this way, the foldable container A can be folded compactly and easily handled, while the bottom plate 1
, the long side plate 3 and the short side plates 4 and 5 are each connected to a heat insulating structure panel 10.
By doing so, the bottom plate 1, the long side plate 3, and the short side plates 4 and 5 are provided with sufficient heat insulation properties, and the folding container A made up of these is provided with sufficient heat insulation properties, and can be used, for example, as a lunch box for home delivery. This makes it suitable for transporting items that require heat or cold retention, such as food or delicatessen ingredients. The upper opening frame 2 is formed by a pair of upper frames 24 and 24 that are L-shaped in plan view and have a heat insulating structure such as by inserting synthetic resin foam as the heat insulating material 21 inside. The upper opening frame 2 is also insulated with a built-in heat insulating material 21, etc., and the upper half 3a of the long side plate 3 is rotatably supported on the upper opening frame 2. This facilitates assembly in which the short side plates 4 and 5 are rotatably supported. Further, the bottom plate main body 23 is made up of a pair of bottom plate frames 22, 22 which are L-shaped in plan view and have a heat insulating structure by incorporating synthetic W resin foam as the heat insulating material 21 in the same way as the upper frame 24. By holding the bottom plate body 23, the bottom plate body 23 that surrounds and holds the bottom plate body 23 is insulated with the built-in heat insulating material 21, etc.
The bottom plate main body 23 can be easily held by the pair of L-shaped bottom plate frames 22, 22. and a pair of bottom plate frames 22, 2
2, the upper half 3b of the long side plate 3 can be easily assembled so as to be rotatably supported.

Furthermore, the L-shaped bottom plate frame 22 and the top frame 24 are formed with bendable hinge parts 27 at their corners, so that the L-shaped bottom plate frame 22 and the top frame 24 can be attached to the hinge parts 27. By folding the cage 1, the work of assembling the bottom plate main body 23 between the pair of bottom plate frames 22, 22, and the bottom plate frame 2
The work of assembling the upper half 3b of the long side plate 3 between the pair of upper frames 24 and 22 can be done easily and quickly, greatly improving the ease of assembly. .5 and the upper half body 3a can be rotatably assembled, and this α also improves the ease of assembly.

[Effect of the Invention 1] In short, the present invention consists of a long side plate facing a bottom plate and an upper opening frame, and left and right short side plates, and the long side plate is separated into an upper half body and an upper half body, and the upper half body is an inner half body. The upper edge of the upper half is pivotally connected to the upper opening frame so that it can be folded inward, and the lower edge of the upper half is pivotally connected to the bottom plate so that it can be folded inward. The short side plate is connected #lW
S is pivotally supported inwardly on the upper opening frame so that it can be folded compactly and easily handled, and the bottom plate, long side plates, and short side plates are each made of heat-insulating structural panels. , the bottom plate, long side plates, and short side plates are provided with sufficient insulation properties, and the folding container made of these is provided with sufficient insulation properties, so that it can be used to retain heat or cold, such as for lunch boxes for home delivery or delicatessen ingredients. It has the advantage of being suitable for transporting necessary items.

In addition, since the upper opening frame is formed by a pair of upper frames that have a heat-insulating structure and are L-shaped in plan view, the upper opening frame is also insulated while the upper half of the long side plate is attached to the upper opening frame. There is an advantage in that the body can be rotatably supported and the short side plate can be rotatably supported on the upper opening frame, making it easy to assemble and improving the ease of assembly. Furthermore, since the bottom plate body is held by a pair of bottom plate frames that have a heat-insulating structure and are L-shaped in plan view, similar to the upper frame body, the bottom plate body that surrounds and holds the bottom plate body is also heat-insulated. The bottom plate body can be easily held by the pair of L-shaped bottom plate frames, and the upper half of the long side plate can be easily pivoted by the pair of bottom plate frames. It has the advantage of being able to remove gender.

In addition, since the L-shaped bottom plate frame and upper frame have bendable hinges at their corners,
The letter-shaped bottom plate frame and upper frame can be bent at their hinges, making it easy and quick to insert the bottom plate body between a pair of bottom plate frames or to assemble the upper half of the long side plate between the bottom plate frames. The short side plate and the upper half can be rotatably assembled between the pair of upper frames easily and quickly, and the assemblability is improved in this respect as well. The advantage is that it can be done.

[Brief explanation of the drawing]

FIG. 1(a) is a perspective view of an assembled state of an embodiment of the present invention, FIG. 1(b) is an enlarged perspective view of part A in FIG.
Figure 2 (aHb) is a perspective view and sectional view of the same as above in the folded state, Figure 3 (a) is an exploded perspective view of the same as above, and Figure 3 (b) is an enlarged perspective view of the mouth of Figure 3 (,). Figure 3(e) is the third
FIG. 4 is an exploded perspective view of the bottom plate of the same as above. FIG. , bottom view, Figure 6 is an exploded perspective view of the upper frame body as above, Figure 7 (,) (b) (e) (d)
8(a) is a partially enlarged exploded perspective view of the same as above;
Figure 8(b) is an enlarged perspective view of the second part of Figure 8(a);
Figure (c) is an enlarged perspective view of the headquarters in Figure 8 (a), and Figure 9 (
a), (b), and (e) are a plan view, front view, and bottom view of the short side plate of the same as above, and Figure 10 (a), (b, and (e) are a plan view, front view, and side view of the upper half of the same as above. , FIG. 11(-)(b)(c) is a plan view, front view, and side view of the upper half of the same as above, FIG. 12(a)
) and (b) are respectively partial sectional views of the same as above, FIG. 13 is a partial sectional view of the same as the above, FIG. 14 is a partial side view of the same as the above, FIG. 15 is an exploded perspective view of the hinge part of the same as the above, and FIG. It is a perspective view of an example, and 1 is a bottom plate, 2 is an upper opening frame, 3 is a long side plate, and 3a
is the upper half body, 3b is the upper half body, 4 is the left short side plate, 5 is the right short side plate, 6 is the protrusion, 7 is the recess, 10 is the heat insulation structure panel, 2
1 is a heat insulating material, 22 is a bottom plate frame, 23 is a bottom plate main body, and 24 is an upper frame body.

Claims (3)

[Claims] (1) Consisting of a long side plate facing the bottom plate and the upper opening frame, and left and right short side plates, the long side plate is separated into an upper half and a lower half, and the upper and lower halves are pivotally connected so that they can be folded inward. The upper edge of the upper half is pivotally connected to the upper opening frame so that it can be folded inwardly, the lower edge of the lower half is pivotally connected to the bottom plate so that it can be folded inwardly, and the short side plate is pivotally connected to the bottom plate so that it can be folded inwardly. The upper end portion is pivotally supported by the upper opening frame so that it can be folded inwardly, and a protrusion is formed on either the side end portion of the short side plate or the side end portion of the upper and lower halves,
1. A folding container, the other of which is formed with a recess into which a protrusion engages when the folding container is assembled, wherein the bottom plate, the long side plates, and the short side plates are each formed as a heat-insulating structural panel. (2) An upper opening frame is formed by a pair of upper frames that have a heat insulating structure and are L-shaped when viewed from above, and are further made to have a heat-insulating structure and are L-shaped when seen from above, similar to the above upper frames. 2. The foldable container according to claim 1, wherein the bottom plate main body is held by a pair of bottom plate frames. (3) The folding container according to claim 2, wherein the L-shaped bottom plate frame and the upper frame have bendable hinges formed at their corners.