Container housing box

Abstract

Using inexpensive cardboard boxes, this invention provides a container housing body with excellent impact resistance, suitable for housing containers that require high airtightness and pressure resistance, through structural innovation. [Solution] A container housing box A includes a container 90 having a cylindrical column body 93 and first and second liquid passage tubes 91 and 92, and a rectangular corrugated cardboard box B having a depth direction z, a longitudinal direction x, and a short direction for housing the container 90. It has a lid 6 connected to the upper side 3U of the third side 3 and facing the bottom 5, and a buffer flap 7 connected to the upper side 1U of the first side 1 and positioned between the bottom 5 and the lid 6. The buffer flap 7 is divided into a short-side second area and a long-side first area M2N1, a short-side second area and a long-side second area M2N2, and a short-side second area and a long-side third area M2N3, which are separated from each other, and in the short-side first area M1 and the short-side third area M3, the long-side first area N1, the long-side second area N2, and the long-side third area N3 are connected to each other.

Description

Technical Field

[0001] The present invention relates to a container housing box body including a container, particularly a medical container, and a corrugated fiberboard box that houses the container.

Background Art

[0002] Containers for liquid treatment used in the medical field and the purifier field are required to have high airtightness and pressure resistance. Accordingly, it is desirable that a corrugated fiberboard box for housing and transporting such a container be provided with a relatively high protection function. Specifically, even if the container housing box body in which the container is housed in the corrugated fiberboard box collides with another object or is dropped from a certain height, it is required that the impact be prevented from reaching the housed container as much as possible.

[0003] As a general and low-cost corrugated fiberboard box, for example, as disclosed in Patent Document 1, a rectangular parallelepiped box is known which has four side walls, namely first to fourth side portions, first to fourth bottom flap portions continuous to the bottom side of the first to fourth side portions, and first to fourth lid flap portions continuous to the top side of the first to fourth side portions.

[0004] When an object such as a container is to be housed in a corrugated fiberboard box, first, the opposing tip portions of the second and fourth bottom flap portions are integrated with an adhesive tape, or the four bottom flap portions are folded in order, so that a bottom portion formed by the four bottom flap portions is formed to create an open-top box-shaped corrugated fiberboard box. After housing the container, the opposing tip portions of the second and fourth lid flap portions are integrated with an adhesive tape, or the four lid flap portions are folded in order, so that a lid portion formed by the four lid flap portions is formed to close the box, resulting in a container housing box body that enables transport of the housed container.

[0005] In typical corrugated cardboard boxes used for the above-mentioned container housings, the four sides are single-walled corrugated cardboard, while the bottom and lid, which are subjected to vertical loads, are mostly double-walled with overlapping flaps. This provides enhanced impact resistance compared to the sides and is a desirable structure. However, in many cases, there is a single-walled section in the central area when viewed vertically, resulting in poor strength in that central area. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2024-123970 [Overview of the project] [Problems that the invention aims to solve]

[0007] Thus, while conventional container boxes using general-purpose cardboard boxes can have nearly double walls at the bottom and lid where vertical loads act, the central area where the column body is likely to be placed remains a single wall. Therefore, for boxes that house containers requiring high airtightness and pressure resistance, there are concerns regarding impact resistance, and there is room for improvement.

[0008] The objective of this invention is to provide a container housing body with excellent impact resistance, suitable for housing containers that require high airtightness and pressure resistance, by improving the structure of the corrugated cardboard box while retaining the use of inexpensive corrugated cardboard boxes. [Means for solving the problem]

[0009] The present invention, which makes it possible to achieve the aforementioned objectives, is as follows: [1] A container housing box comprising a container having a cylindrical column body, a first liquid passage pipe connected to one end of the column body in the axial direction of the cylinder, and a second liquid passage pipe connected to the other end in the axial direction of the cylinder, and a rectangular parallelepiped cardboard box having a depth direction, a longitudinal direction, and a short direction for housing the container, The corrugated cardboard box has a bottom having a first bottom side which is the long side, a second bottom side which is the short side adjacent to the first bottom side, a third bottom side which is the long side adjacent to the second bottom side, and a fourth bottom side which is the short side adjacent to the third bottom side. A first side portion whose lower edge is connected to the first side of the bottom portion, a second side portion adjacent to the first side portion and whose lower edge is connected to the second side of the bottom portion, a third side portion adjacent to the second side portion and whose lower edge is connected to the third side of the bottom portion, a fourth side portion adjacent to the third side portion and whose lower edge is connected to the fourth side of the bottom portion, It has a lid portion connected to the upper side of the third side portion and facing the bottom portion, and a buffer flap portion connected to the upper side of the first side portion and positioned between the bottom portion and the lid portion, The buffer flap portion is a container housing box that satisfies the following requirements (1) to (3). [Requirements] (1) The buffer flap portion has a first short area near the first side, a third short area near the third side, and a second short area between the first and third short areas in the short direction, and a first longitudinal area near the second side, a third longitudinal area near the fourth side, and a second longitudinal area between the first and third longitudinal areas in the longitudinal direction. (2) The buffer flap portion is divided into the short-side second area and the long-side first area, the short-side second area and the long-side second area, and the short-side second area and the long-side third area, and in the short-side first area and the short-side third area, the long-side first area, the long-side second area, and the long-side third area are connected to each other. (3) The second short area and the second long area of ​​the buffer flap portion are located closer to the bottom than the second short area and the first long area and the second short area and the third long area, the column body portion is located in the second short area and the second long area of ​​the buffer flap portion, and either of the first and second liquid passage portions is located in the second short area and the first long area, and the other is located in the second short area and the third long area.

[0010] The column body is positioned in the second short-side area and the second long-side area, while the first and second liquid passage tubes are distributed and positioned in the second short-side area and the first long-side area, and the second short-side area and the third long-side area, which are located higher than the second short-side area and the second long-side area. Therefore, the container is positioned with the column body dropped into the second short-side area and the second long-side area, so that the container is positioned in a fixed location in the cardboard box so that it does not shift at least in the direction of the cylinder axis. The container is positioned above the buffer flap that is located above the bottom, so that the entire bottom of the cardboard box is effectively a double-bottom structure, thereby increasing the impact resistance of the load-bearing bottom.

[0011] While employing a divided structure in which the second short-side area and the first long-side area, and the second short-side area and the third long-side area are positioned higher than the second short-side area and the second long-side area, the first short-side area and the third short-side area are connected to the first long-side area, the second long-side area and the third long-side area, respectively, so that the overall cushioning flap section is maintained. Therefore, handling of the cushioning flap section by workers or manufacturing robots when assembling the cardboard box, such as folding the cushioning flap section inward, becomes easier.

[0012] [2] The container housing box according to [1], wherein the short second area and the long first area and the first liquid passage portion or the second liquid passage portion located on the lid side thereof are in contact with each other. [3] The short second area and the long third area are in contact with the second liquid passage portion or the first liquid passage portion located on the lid side thereof, as described in [1] or [2]. [4] The second reinforcing flap portion is connected to the upper side of the second side portion and is positioned between the buffer flap portion and the bottom portion, The container housing box according to any one of [1] to [3], wherein the second reinforcing flap portion has a second insert portion disposed between the short second area and the long second area and the bottom portion, and a second folded portion connecting the upper side of the second side portion and the second insert portion. [5] A fourth reinforcing flap portion is connected to the upper side of the fourth side portion and is positioned between the buffer flap portion and the bottom portion, The container housing box according to any one of [1] to [4], wherein the fourth reinforcing flap portion has a fourth insert portion disposed between the short second area and the long second area and the bottom portion, and a fourth folded portion connecting the upper side of the fourth side portion and the fourth insert portion. [6] The second reinforcing flap portion is connected to the upper side of the second side portion and is disposed between the buffer flap portion and the bottom portion, and the fourth reinforcing flap portion is connected to the upper side of the fourth side portion and is disposed between the buffer flap portion and the bottom portion, The second reinforcing flap portion has a second insole portion disposed between the short second area and the long second area and the bottom portion, and a second folded portion connecting the upper side of the second side portion and the second insole portion, and the fourth reinforcing flap portion has a fourth insole portion disposed between the short second area and the long second area and the bottom portion, and a fourth folded portion connecting the upper side of the fourth side portion and the fourth insole portion, The container housing box according to any one of items [1] to [3], wherein the second insole portion and the fourth insole portion do not overlap below the short second area and the long second area. [7] The corrugated cardboard box is configured such that the corrugations are aligned in the depth direction, as described in any one of items [1] to [6]. [8] The lid portion includes: a lid folding portion along the first side portion on the outer side of the first side portion; a lid main body portion connecting the upper side edge of the third side portion and the lid folding portion, and facing the bottom portion; and a closing lock piece connected to an end of the lid folding portion opposite to the side where the lid main body portion is located, An insertion opening portion into which the closing lock piece is inserted is formed at an end of the first side portion on the first bottom side edge side, A notch portion that avoids interference with the closing lock piece inserted into the insertion opening portion is formed in the second short-side area and the second long-side area of the buffer flap, the container housing box body according to any one of claims [1] to [7]. [Effects of the Invention]

[0013] According to the container housing box body of the present invention, while retaining the feature of using an inexpensive corrugated fiberboard box, it is possible to provide a container housing box body that has excellent impact resistance and facilitates handling of the buffer flap portion during assembly of the corrugated fiberboard box, so as to be suitable for housing containers that require high airtightness and pressure resistance strength. [Brief Description of the Drawings]

[0014] [Figure 1] Plan view of the container housing box body [Figure 2] Front view of the container housing box body [Figure 3] Cross-sectional view of the container housing box body in Figure 1 taken along line V-V [Figure 4] Cross-sectional view of the container housing box body in Figure 2 taken along line W-W [Figure 5] Plan view showing the corrugated fiberboard box in an unfolded state [Figure 6] Perspective view showing the schematic shape of the container [Figure 7] Perspective view seen from obliquely above, showing the structure such as bending of the buffer flap portion [Figure 8] Front view showing the container [Figure 9] Side view showing the container [Modes for Carrying Out the Invention]

[0015] The present invention will be described in more detail below based on the embodiments described below. However, the present invention is not limited by the embodiments described below, and it is certainly possible to implement it with appropriate modifications within the scope that is consistent with the spirit of the preceding and following descriptions, and all such modifications are included within the technical scope of the present invention. In addition, hatching and component reference numerals may be omitted in the drawings for convenience, in which case please refer to the specification or other drawings. Furthermore, the dimensions of various components in the drawings may differ from the actual dimensions, as priority has been given to helping to understand the features of the present invention.

[0016] As shown in Figures 1 to 3 and Figure 6, the container housing box G of this disclosure includes a container 90 having a cylindrical column body 93, a first liquid passage section 91 connected to one end of the column body 93 in the direction of the cylindrical axis p, and a second liquid passage section 92 connected to the other end in the direction of the cylindrical axis p, and a rectangular parallelepiped corrugated cardboard box A having a depth direction, a longitudinal direction, and a short direction for housing the container 90. Figures 1 to 3, 5, and 7 use a corrugated cardboard box A that houses one container 90, while only Figure 4 depicts a box housing two containers 90, 90 arranged in parallel in the short direction. The structure of Figure 4 is basically the same as when housing one container 90. The "cylindrical axis" of the container 90 is sometimes called the "cylindrical axis center."

[0017] As shown in Figures 1 to 5 and Figure 7, the container housing box G can be described as follows. That is, a container housing box A including a container 90 having a cylindrical column body 93, a first liquid passage pipe 91 connected to one end of the column body 93 in the direction of the cylindrical axis p, and a second liquid passage pipe 92 connected to the other end in the direction of the cylindrical axis p, and a rectangular parallelepiped corrugated cardboard box A having a depth direction z, a longitudinal direction x, and a short direction y for housing the container 90, Cardboard box A has a bottom 5 which has a long side, the first bottom side 51, a short side, the second bottom side 52 adjacent to the first bottom side 51, a long side, the third bottom side 53 adjacent to the second bottom side 52, and a short side, the fourth bottom side 54 adjacent to the third bottom side 53. A first side portion 1 whose lower edge is connected to the first bottom edge 51, a second side portion 2 adjacent to the first side portion 1 and whose lower edge is connected to the second bottom edge 52, a third side portion 3 adjacent to the second side portion 2 and whose lower edge is connected to the third bottom edge 53, and a fourth side portion 4 adjacent to the third side portion 3 and whose lower edge is connected to the fourth bottom edge 54, It has a lid portion 6 connected to the upper side 3U of the third side portion 3 and facing the bottom portion 5, and a buffer flap portion 7 connected to the upper side 1U of the first side portion 1 and positioned between the bottom portion 5 and the lid portion 6. The buffer flap section is a container housing box G that satisfies the following requirements (1) to (3). [Requirements] (1) The buffer flap portion 7 has a short-side first area M1 close to the first side portion 1, a short-side third area M3 close to the third side portion 3, and a short-side second area M2 located between the short-side first area M1 and the short-side third area M3 in the short-side direction y, and a longitudinal first area N1 close to the second side portion 2, a longitudinal third area N3 close to the fourth side portion 4, and a longitudinal second area N2 located between the longitudinal first area N1 and the longitudinal third area N3 in the longitudinal direction x. (2) The buffer flap section 7 is divided into a short-side second area and a long-side first area M2N1, a short-side second area and a long-side second area M2N2, and a short-side second area and a long-side third area M2N3, with the long-side first area N1, the long-side second area N2, and the long-side third area N3 being connected to each other in the short-side first area M1 and the short-side third area M3. (3) The second short-side area and second long-side area M2N2 of the buffer flap section 7 is located closer to the bottom 5 than the second short-side area and first long-side area M2N1 and the second short-side area and third long-side area M2N3, the column body section 93 is located in the second short-side area and second long-side area M2N2 of the buffer flap section 7, and one of the first and second liquid passage sections 91 and 92 is located in the second short-side area and first long-side area M2N1, and the other is located in the second short-side area and third long-side area M2N3.

[0018] As shown in Figures 1-4 and 7, the column body 93 is positioned in the second short-side area and the second long-side area M2N2, while the first and second liquid passage tubes 91 and 92 are distributed and positioned in the second short-side area and the first long-side area M2N1 and the second short-side area and the third long-side area M2N3, which are located higher than the second short-side area and the second long-side area M2N2. Therefore, the container 90 is positioned with the column body 93 dropped into the second short-side area and the second long-side area M2N2, so that the container 90 is positioned in the cardboard box A in such a fixed position that it does not shift at least in the direction of the cylindrical axis p (longitudinal direction x) within the box. Since the container 90 is positioned above the buffer flap 7 which is located on the bottom 5, the entire bottom of the cardboard box A effectively becomes a double-bottom structure, thereby increasing the impact resistance of the bottom 5 which is subjected to load.

[0019] As shown in Figures 5 and 7, while adopting a divided structure in which the short-side second area and long-side first area M2N1 and the short-side second area and long-side third area M2N3 are positioned higher than the short-side second area and long-side second area M2N2, the long-side first area N1, long-side second area N2, and long-side third area N3 are connected in the short-side first area M1 and short-side third area M3, so that the overall functionality of the buffer flap section 7 is maintained. Therefore, (compared to the case of a buffer flap in which the ends of the long-side first to third areas N1 to N3 are not connected and are separated from each other) it becomes easier for workers and manufacturing robots to handle the buffer flap section 7 when assembling the corrugated box A, such as by folding the buffer flap section 7 inward.

[0020] As a result, while retaining the use of inexpensive corrugated cardboard boxes B, it is possible to provide a container housing box G that is suitable for housing containers 90 that require high airtightness and pressure resistance, has excellent impact resistance, and allows for easy handling of the cushioning flap portion 7 when assembling the corrugated cardboard box A.

[0021] As shown in Figures 6, 8, and 9, an example of a container 90 is a medical container 90 for blood purification, etc., which has a column 94 and a pair of stopper members 95 and 96. The column 94 is composed of a cylindrical column body 93, a first liquid passage section 91 disposed at one end of the column body 93 in the direction of the cylindrical axis p, and a second liquid passage section 92 disposed at the other end of the column body 93 in the direction of the cylindrical axis p. A filling port 97 is formed in the column body 93. A first stopper member 95 that closes the first liquid passage section 91 is attached to the first liquid passage section 91 by screw-in means, etc., and a second stopper member 96 that closes the second liquid passage section 92 is attached to the second liquid passage section 92 by screw-in means, etc. It is preferable that the first and second liquid passage sections 91 and 92 are the same as each other, and that the first and second stopper members 95 and 96 are the same as each other. In all figures except Figures 8 and 9, the container 90 is depicted with a simplified outline for simplicity.

[0022] The material constituting column 94 is preferably biocompatible. For example, polyolefin resins such as polypropylene resin and polyethylene resin, polycarbonate resin, polysulfone resin, polymethyl methacrylate resin, and polyvinylidene fluoride (PVDF) resin can be used. To improve the pressure resistance and durability of container 1, glass fiber reinforced plastic (GFRP) or metals such as stainless steel and titanium can also be used as constituent materials for column 94.

[0023] Container 90 can be used as a medical container for leukocyte removers, blood component adsorbents, plasma separators, artificial kidneys, artificial livers, artificial lungs, plasma separators, ultrafilters, water purifiers, etc. Column 94 has a cylindrical structure capable of containing fluids or solids. Column 94 has functions such as fluid separation, filtration, adsorption, and exchange. The inside of column 94 can be filled with water such as distilled water, deionized water, or ultrafiltered water, or aqueous solutions containing salts such as physiological saline, buffer solutions, intravenous fluids, and dialysates. Furthermore, by containing solids such as adsorption resin beads, ion exchange resins, gels, or filter media in column 2, it is possible to provide a function for selectively removing or recovering specific components.

[0024] As shown in Figures 1 to 4, the corrugated cardboard box A is a rectangular box having a longitudinal direction x in the left-right direction, a short direction y in the front-back direction, and a depth direction z in the up-down direction, and can accommodate one container 90 in an orientation where its cylindrical axis p is aligned with the longitudinal direction x. An outer cover flap 6A is connected to the tip side (front side in Figure 2) of the lid 6 which is connected to the third side portion 3 by its upper side 3U, and an insert piece 6b is connected to the tip side (bottom side in Figure 2) of the outer cover flap 6A. Preferably, the column body portion 93 of the container 90 is positioned in the short-side second area and longitudinal second area M2N2 of the buffer flap portion 7, and the first and second liquid passage tube portions 91 and 92 are distributed and placed in the short-side second area and longitudinal first area M2N1 and the short-side second area and longitudinal third area M2N3, respectively. In the cardboard box A and the container housing box G, the side of the first side portion 1 is designated as the front F, the side of the third side portion 3 as the rear T, the side of the fourth side portion 4 as the left L, and the side of the second side portion 2 as the right R.

[0025] As shown by dashed lines in Figures 3 and 4, a container housing box G may be provided with an inner lid C separate from the cardboard box A, and the upper part of the column body 93 is fitted into the opening 9 above the inner lid C. It is preferable that the inner lid C has 2 to 4 spacing-retaining flap portions 20 that can be folded toward the lid portion 6 side (upwards), as this restricts the movement of the inner lid c toward the lid portion 6.

[0026] Figure 5 shows a diagram of how to make a corrugated cardboard box A, used for a container housing box G, from a single sheet of corrugated cardboard dA. The corrugated cardboard dA shown in Figure 5 is preferably an application of code number 0712 or 0713 (hereinafter also referred to as 0712 type) of the "glued and easily assembled type" specified in JIS Z1507:2013. Although not shown in the illustration, the paper used to form a corrugated cardboard box is called corrugated cardboard, and corrugated cardboard is made by laminating a pair of liners, which are flat cardboard sheets, and a core, which is a corrugated cardboard sheet sandwiched between these liners. The direction in which the corrugation of the core is visible is called the "groove direction" (also called the grain direction), and the direction perpendicular to the groove direction is called the "flow direction". Relatively strong strength is exhibited when force is applied in the direction of the groove direction, but it has the characteristic of easily bending along the groove direction when force is applied in the flow direction. In the corrugated cardboard dA having the unfolded shape shown in Figure 5, it is preferable that the corrugations SA are set to face the depth direction z (see Figures 2 and 7) of the first to fourth sides 1 to 4.

[0027] In Figures 3 and 4, the hatching showing the cross-section of corrugated cardboard dA is such that the hatching slopes downward to the right in the cross-section where the corrugation SA is visible (the direction in which the corrugation of the core is visible), and the hatching slopes downward to the left in the cross-section where the flow direction (the direction intersecting the corrugation SA) is visible. Note that the corrugation SA is sometimes called a groove.

[0028] As shown in Figure 5, the corrugated cardboard box A has first to fourth sides 1 to 4 that form the side walls, a bottom 5 that forms the bottom wall, and a lid 6 that forms the lid, and it is preferable to form the rectangular corrugated cardboard box A shown in Figures 1 to 4. It is preferable that a first bottom flap 5A is connected to the lower side of the first side 1 via the first side 51 of the bottom, and a buffer flap 7 is connected to the upper side via the upper side 1U. It is preferable that the buffer flap 7 has a first area M1 in the short direction connected to the first side 1 by the upper side 1U, a second area M2 in the short direction that follows the side opposite the first area M1 to the first side 1 (front side), and a third area M3 in the short direction that follows the side opposite the second area M2 to the first side 1 (front side). If the first to third areas M1 to M3 in the short direction are divided into three longitudinal areas N1 to N3, then, as described above, the second short area and first longitudinal area M2N1, the second short area and second longitudinal area M2N2, and the second short area and third longitudinal area M2N3 are mutually separated, and it is preferable that the first longitudinal area N1, the second longitudinal area N2, and the third longitudinal area N3 are connected to each other in the first short area M1 and the third short area M3. It is preferable that a roughly Saturn-shaped locking hole 1R for receiving the insertion piece 6b, which will be described later, is formed at the boundary between the first side portion 1 and the first bottom flap 5A.

[0029] That is, the lid portion 6 has an outer cover flap (an example of a "folded-over lid" portion) 6A that runs along the first side portion 1 on the outside of the first side portion 1, a lid body portion 6B that connects the upper side 3U of the third side portion 3 and the outer cover flap 6A and faces the bottom portion 5, and an insertion piece (an example of a "closed lock piece") 6b that is connected to the end of the outer cover flap 6A opposite to the lid body portion 6B side. A locking hole (an example of an "insertion opening") 1R is formed at the end of the first side portion 1 on the bottom side of the first edge 51, into which the insertion piece 6b is inserted. A relief hole (an example of a "notch") 11 is formed in the short-side second area and the long-side second area M2N2 of the buffer flap portion 7 to avoid interference with the insertion piece 6b inserted into the locking hole portion 1R.

[0030] As shown in Figures 3 to 5 and Figure 7, in the longitudinal first area N1, there are valley folds (also called corners) t between the short-side first area and longitudinal first area M1N1 and the short-side second area and longitudinal first area M2N1, and between the short-side second area and longitudinal first area M2N1 and the short-side third area and longitudinal first area M3N1. There are mountain folds (also called corners) k in the short-side second area and longitudinal first area M2N1, closer to the short-side third area and longitudinal first area M3N1. A valley fold is a part that is folded so that the fold is a valley (corner), and a mountain fold is a part that is folded so that the fold is a mountain (corner).

[0031] In the longitudinal second area N2, there is a valley fold t between the short-side first area and longitudinal second area M1N2 and the short-side second area and longitudinal second area M2N2. There is no fold between the short-side second area and longitudinal second area M2N2 and the short-side third area and longitudinal second area M3N2, and they are formed as one continuous area. In the short-side first area and longitudinal second area M1N2 and the short-side second area and longitudinal second area M2N2, a relief hole 11 is formed with the valley fold t in between. The relief hole 11 is a hole to avoid interference between the insertion piece 6b inserted into the locking hole 1R and the buffer flap 7, and is preferable.

[0032] In the longitudinal third area N3, there are valley folds (also called corners) t between the short-side first area and longitudinal third area M1N3 and the short-side second area and longitudinal third area M2N3, and between the short-side second area and longitudinal third area M2N3 and the short-side third area and longitudinal third area M3N3. In the short-side second area and longitudinal third area M2N3, there are mountain folds (also called corners) k at the point closer to the short-side third area and longitudinal third area M3N3.

[0033] As shown in Figures 3, 4, and 7, in the buffer flap section 7, the short-side second area and long-side second area M2N2 and the short-side third area M3 can contact the upper surface of the bottom 5, while the short-side second area and long-side first area M2N1 and the short-side second area and long-side third area M2N3 are located at a height above the bottom 5. Therefore, in the container 90 in which the column body 93 is dropped into the short-side second area and long-side second area M2N2, the inner end 12 of the short-side second area and long-side first area M2N1 and the inner end 13 of the short-side second area and long-side third area M2N3 are close to the column body 93 in the longitudinal direction x, so that it does not move or moves only slightly in the longitudinal direction x.

[0034] As shown in Figures 3 to 5, it is preferable that a second bottom flap 5B is connected to the lower side of the second side portion 2 via the second bottom edge 52, and a second reinforcing flap portion 2F is connected to the upper side via the upper edge 2U. It is preferable that the second reinforcing flap portion 2F has a second folded portion b2 connected to the second side portion 2 at the upper edge 2U, and a second insole portion 2n connected to the second folded portion b2.

[0035] Preferably, a third bottom flap 5C is connected to the lower side of the third side portion 3 via the third bottom edge 53, a lid portion 6 is connected to the upper side via the upper edge 3U, and an adhesive portion 3s is connected to the end opposite to the second side portion 2. Preferably, an outer cover flap 6A that covers the outside of the first side portion 1 is connected to the lid portion 6, and a locking insert piece 6b for closing is connected to the outer cover flap 6A. Preferably, the adhesive portion 3s, which is a connecting piece formed on the third side portion 3, is attached to the corresponding part of the fourth side portion 4 by adhesive or the like. Preferably, the integration of the third side portion 3 and the fourth side portion 4 by the adhesive portion 3s forms rectangular loop-shaped first to fourth side portions 1 to 4.

[0036] Preferably, the fourth bottom flap 5D is connected to the lower side of the fourth side portion 4 via the fourth bottom edge 54, and the fourth reinforcing flap portion 4F is connected to the upper side via the upper edge 4U. Preferably, the fourth reinforcing flap portion 4F has a fourth folded portion b4 connected to the fourth side portion 4 at the upper edge 4U, and a fourth insole portion 4n connected to the fourth folded portion b4.

[0037] As shown in Figures 3 to 5, it is preferable that the bottom 5 is formed by alternately overlapping four bottom flaps 5A to 5D in order and partially gluing them together. It is preferable that both ends of the first and third bottom flaps 5A and 5C in the longitudinal direction x are formed in a portion that has a length exceeding half the length of the short direction y of the corrugated cardboard box B, and that the first and third overlapping portions 51t and 53t for gluing are formed on one of the ends. For example, by overlapping and assembling the first to fourth bottom flaps 5A to 5D, which are set to the shape and size shown in Figure 5, by gluing the first overlapping portion 51t to the corresponding part of the fourth bottom flap 5D and gluing the third overlapping portion 53t to the corresponding part of the second bottom flap 5B, the bottom 5 is formed as shown in Figures 3 and 4, with both ends in the longitudinal direction x forming a double bottom and partially a triple bottom, which is preferable in terms of strength and impact resistance in the vertical direction.

[0038] The structure of the bottom 5 described above is preferably the bottom structure of the cardboard box known as the 0712 type mentioned earlier. The 0712 type bottom structure is generally described as "a type in which the adhesive tabs on the length side flaps of the bottom surface and the width side flaps are joined in advance and folded. When the box is raised for use, the bottom surface is formed, so sealing with tape or the like is unnecessary." The bottom 5 can also be the bottom of a typical cardboard box that is closed on the bottom and top surfaces with tape, which is often used when moving, and is not limited to the structure described above.

[0039] In the buffer flap section 7, the first short area M1 is folded inward and downward by approximately 180 degrees at the upper edge 1U so as to follow the inner surface of the first side section 1, and the second short area M2 is folded upward by approximately 90 degrees relative to the first short area M1. Then, the third short area and first long area M3N1 is folded upward by approximately 90 degrees relative to the second short area and first long area M2N1, which is folded downward by approximately 90 degrees at the mountain fold section k shown in Figure 5, and this folding structure is the same in the third long area N3.

[0040] As shown in Figures 3 and 4, the second folded portion b2 is folded inward and downward by approximately 180 degrees along its upper edge 2U so as to follow the inner surface of the second side portion 2, and the second insert portion 2n is folded upward by approximately 90 degrees relative to the second folded portion b2. The fourth folded portion b4 is folded inward and downward by approximately 180 degrees along its upper edge 4U so as to follow the inner surface of the fourth side portion 4, and the fourth insert portion 4n is folded upward by approximately 90 degrees relative to the fourth folded portion b4. When assembling the corrugated cardboard box A, the second and fourth reinforcing flap portions 2F and 4F are inserted into the inside of the box, followed by the cushioning flap portion 7.

[0041] As shown in Figure 3, it is preferable that the second insole portion 2n and the fourth insole portion 4n do not overlap below the short-side second area and the long-side second area M2N2, but this is not limited to this. The tip (notation omitted) of the second insole portion 2n on the fourth side portion 4 side may extend beyond the midpoint of the longitudinal x of the bottom portion 5 to the fourth side portion 4 side, or the tip (notation omitted) of the fourth insole portion 4n on the second side portion 2 side may extend beyond the midpoint of the longitudinal x of the bottom portion 5 to the second side portion 2 side. Since the second insole portion 2n and the fourth insole portion 4n are below the short-side second area and the long-side second area M2N2, the bottom portion 5 has at least a double bottom structure with respect to the column body portion 93, which is preferable as it can enhance the protective function of the bottom portion 5 with respect to the column body portion 93. In Figure 7, the imaginary line drawn on the lower side of the second short-side area and third long-side area M2N3 represents the shape of the second short-side area and second long-side area M2N2. Also, for simplicity, the relief hole 11 is omitted in Figure 7.

[0042] As shown in Figures 7 and 8, when the column body 93 is placed in the second short-side area and second long-side area M2N2, the steps SA of the corrugated cardboard box A are set so that the steps of the buffer flap 7 are aligned with the short-side direction y, which is the lateral direction intersecting the cylindrical axis p of the column body 93. In other words, as mentioned above, it is preferable that the corrugated cardboard box dA shown in Figure 5 has steps SA set in the vertical direction on Figure 5. With this configuration, when the container 90 is placed, the strength in the short-side direction y of the second short-side area and first long-side area M2N1 and the second short-side area and third long-side area M2N3 on which the first and second liquid passage pipes 91 and 92 are placed is increased, which is preferable. It is also possible to configure the column body 93 to be placed on the second and fourth insert sections 2n and 4n or the bottom 5.

[0043] [Alternative Embodiment] Although not shown in the diagram, it is also possible to position the mountain fold portion k in the second short-side area and first long-side area M2N1 and the second short-side area and third long-side area M2N3 closer to the first side portion 1, thereby providing a function to restrict movement in the longitudinal direction x by contact between the column body portion 93 and each inner end 12, 13, and to construct a structure in which the column body portion 93 is placed on the bottom portion 5 or the second insulator portion 2n or the fourth insulator portion 4n. [Explanation of Symbols]

[0044] 1. First side 1U Upper side of the first side 2. Second side 2F Second reinforcement flap section 2U Upper side of the second side 2n Second insole section 3. Third side 3U Upper side of the third side 4. Fourth side 4F 4th Reinforcement Flap Section 4U Upper side of the fourth side 4n Fourth insole section 5 Bottom 6 Lid 7. Buffer flap section 51. First side of the base 52. Second side of the base 53. Third side of the base 54. Fourth side of the base 90 containers 91 1st liquid passage pipe section 92 2nd liquid passage pipe section 93 Column body A cardboard box G Container housing box M1, M2, M3 Longitudinal Areas 1-3 N1, N2, N3 Short-distance areas 1-3 M1N1 Short-side 1st area and Long-side 1st area M1N2 Short-range first area and long-range second area M1N3 Short-range 1st area and long-range 3rd area M2N1 Short-range second area and long-range first area M2N2 Short-range second area and long-range second area M2N3 Short-range second area and long-range third area M3N1 Short-range 3rd area and long-range 1st area M3N2 Short-range 3rd area and long-range 2nd area M3N3 Short-range 3rd area and long-range 3rd area SA cardboard box tiers b1 First fold section b2 Second turnaround section b3 Third turnaround section b4 Fourth fold

Claims

1. A container housing box comprising a container having a cylindrical column body, a first liquid passage pipe connected to one end of the column body in the axial direction of the cylinder, and a second liquid passage pipe connected to the other end in the axial direction of the cylinder, and a rectangular parallelepiped cardboard box having a depth direction, a longitudinal direction, and a short direction for housing the container, The corrugated cardboard box has a bottom having a first bottom side which is the long side, a second bottom side which is the short side adjacent to the first bottom side, a third bottom side which is the long side adjacent to the second bottom side, and a fourth bottom side which is the short side adjacent to the third bottom side. A first side portion whose lower edge is connected to the first side of the bottom portion, a second side portion adjacent to the first side portion and whose lower edge is connected to the second side of the bottom portion, a third side portion adjacent to the second side portion and whose lower edge is connected to the third side of the bottom portion, a fourth side portion adjacent to the third side portion and whose lower edge is connected to the fourth side of the bottom portion, It has a lid portion connected to the upper side of the third side portion and facing the bottom portion, and a buffer flap portion connected to the upper side of the first side portion and positioned between the bottom portion and the lid portion, The buffer flap portion is a container housing box that satisfies the following requirements (1) to (3). [Requirements] (1) The buffer flap portion has a first short area near the first side, a third short area near the third side, and a second short area between the first and third short areas in the short direction, and a first longitudinal area near the second side, a third longitudinal area near the fourth side, and a second longitudinal area between the first and third longitudinal areas in the longitudinal direction. (2) The buffer flap portion is divided into the short-side second area and the long-side first area, the short-side second area and the long-side second area, and the short-side second area and the long-side third area, and in the short-side first area and the short-side third area, the long-side first area, the long-side second area, and the long-side third area are connected to each other. (3) The second short area and the second long area of ​​the buffer flap portion are located closer to the bottom than the second short area and the first long area and the second short area and the third long area, the column body portion is located in the second short area and the second long area of ​​the buffer flap portion, and one of the first and second liquid passage portions is located in the second short area and the first long area, and the other is located in the second short area and the third long area.

2. The container housing box according to claim 1, wherein the short second area and the long first area and the first liquid passage portion or the second liquid passage portion located on the lid side thereof are in contact with each other.

3. The container housing box according to claim 1, wherein the short second area and the long third area and the second liquid passage portion or the first liquid passage portion located on the lid side thereof are in contact with each other.

4. It has a second reinforcing flap portion that is connected to the upper side of the second side portion and is positioned between the buffer flap portion and the bottom portion, The container housing box according to any one of claims 1 to 3, wherein the second reinforcing flap portion has a second insert portion disposed between the short second area and the long second area and the bottom portion, and a second folded portion connecting the upper side of the second side portion and the second insert portion.

5. It has a fourth reinforcing flap portion that is connected to the upper side of the fourth side portion and is positioned between the buffer flap portion and the bottom portion, The container housing box according to any one of claims 1 to 3, wherein the fourth reinforcing flap portion has a fourth insert portion disposed between the short second area and the long second area and the bottom portion, and a fourth folded portion connecting the upper side of the fourth side portion and the fourth insert portion.

6. It has a second reinforcing flap portion connected to the upper side of the second side portion and positioned between the buffer flap portion and the bottom portion, and a fourth reinforcing flap portion connected to the upper side of the fourth side portion and positioned between the buffer flap portion and the bottom portion, The second reinforcing flap portion has a second insole portion disposed between the short second area and the long second area and the bottom portion, and a second folded portion connecting the upper side of the second side portion and the second insole portion, and the fourth reinforcing flap portion has a fourth insole portion disposed between the short second area and the long second area and the bottom portion, and a fourth folded portion connecting the upper side of the fourth side portion and the fourth insole portion, The container housing box according to any one of claims 1 to 3, wherein the second insole portion and the fourth insole portion do not overlap below the short second area and the long second area.

7. The container housing box according to any one of claims 1 to 3, wherein the corrugated layers of the corrugated box are set to align with the depth direction.

8. The lid portion has a lid fold portion that runs along the first side on the outside of the first side portion, a lid body portion that connects the upper side of the third side portion and the lid fold portion and faces the bottom portion, and a closing lock piece connected to the end of the lid fold portion opposite to the lid body portion side. An insertion opening is formed at the end of the first side of the bottom of the first side portion, into which the closing lock piece is inserted. A container housing box according to any one of claims 1 to 3, wherein a notch is formed in the short second area and the long second area of ​​the buffer flap to avoid interference with the closing lock piece inserted into the insertion opening.

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