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. A dedicated inner lid C is further provided between the base portion 7d and the lid portion 6, and the inner lid C has an upper opening 9 into which the upper part of the column body 93, which is dropped into the opening 8, is fitted. When the column body 93 is dropped into the opening 8 of the base portion 7d and fitted into the upper opening 9 of the inner lid C, the steps of the corrugated cardboard box B and the steps of the inner lid C are set so that they intersect.

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 processing 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 has a relatively high protective function. Specifically, even if the container housing box body with the container housed in the corrugated fiberboard box collides with another object or is dropped from a certain height, it is required to prevent impact 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 that includes four side walls, i.e., 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 sequence, so that a bottom portion formed by the four bottom flap portions is formed to create an open-top corrugated fiberboard box. After the container is housed, 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 sequence, 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 allows the housed container to be transported.

[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, a single-walled section remains in the central area when viewed from above, making it difficult to say that it has sufficient impact resistance. [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 has a base portion having an opening into which the column body portion is placed, and a first folded portion connecting the upper side of the first side portion to the base portion. It is separate from the aforementioned cardboard box and further has an inner lid that is positioned between the base and the lid, The aforementioned inner lid portion has an upper opening into which the upper part of the column body portion, which is positioned to be dropped into the opening, A container housing box in which, when the column body is dropped into the opening of the base and fitted into the upper opening of the inner lid, the steps of the corrugated cardboard box and the steps of the inner lid are set so that the steps of the base and the steps of the inner lid intersect.

[0010] The container is positioned with the column body dropped into the opening of the base of the buffer flap, which is connected to the first side via the first folded portion. This allows the container to be housed with a gap so that the column body does not come into contact with the bottom. In addition, the upper part of the column body is fitted into the upper opening of the inner lid, which is located below the lid, allowing the container to be housed without the column body coming into contact with the lid.

[0011] In corrugated cardboard, which is the paper used to make cardboard boxes, stronger load-bearing force is exhibited in the direction along the corrugations than in the direction along the flow (the direction intersecting the corrugations). Therefore, by making the corrugations of the cushioning flap intersect with the corrugations of the inner lid, the corrugated cardboard box is endowed with strong load-bearing force in both the direction of the cylindrical axis of the column body and the lateral direction intersecting the cylindrical axis, while restricting the movement of the column body in both the direction of the cylindrical axis and the aforementioned lateral direction.

[0012] [2] The corrugated cardboard box is configured such that the steps of the base portion are aligned with the radial direction of the column body portion which is recessed into the opening, and the steps of the inner lid portion are aligned with a direction perpendicular to the radial direction, as described in [1]. [3] The container housing box according to [1] or [2], wherein the base portion and the first liquid passage portion and the second liquid passage portion, which are arranged on the lid side of the base portion, are in contact with each other. [4] The container housing box according to any one of [1] to [3], wherein the size of the upper opening is set such that the first liquid passage section and the second liquid passage section come into contact with the inner lid body section when the upper part of the column body is fitted into the upper opening. [5] The inner lid portion comprises an inner lid body portion having the upper opening, and a spacing-retaining flap portion that is connected to the first side end and the third side end and / or the second side end and the fourth side end of the inner lid body portion and is bent toward the lid portion, The container housing box according to any one of [1] to [4], wherein the movement of the inner lid body toward the lid is restricted by the contact between the tip of the spacing-retaining flap and the lid.

Advantageous Effects of Invention

[0013] According to the container housing box body of the present invention, by intersecting the stepped portions of the buffer flaps and the stepped portions of the inner lid part, an effective movement restricting function can be exerted in both the cylinder axis direction of the container and the lateral direction intersecting the cylinder axis, while the container can be housed vertically spaced apart from each of the bottom part and the lid part where impact and force are likely to act, so that even if a certain degree of impact or the like acts on the bottom part or the lid part, the impact will not reach the container or will be extremely difficult to transmit to the container. As a result, while retaining the point of using an inexpensive corrugated fiberboard box, by modifying the structure of the corrugated fiberboard box, it is possible to provide a container housing box body that is excellent in impact resistance so as to be suitable for housing containers requiring high airtightness and pressure resistance, and that can effectively restrict the movement of the container in both the cylinder axis direction and the lateral direction.

Brief Description of Drawings

[0014] [Figure 1] Plan view of the container housing box body [Figure 2] Front view of the container housing box body [Figure 3] Perspective view of the corrugated fiberboard box showing the entire container housing box body [Figure 4] Plan view showing the corrugated fiberboard box in an unfolded state [Figure 5] Plan view showing the inner lid in an unfolded state [Figure 6] Perspective view showing the schematic shape of the container [Figure 7] Cross-sectional view of the container housing box body in Fig. 1 taken along line V-V [Figure 8] Cross-sectional view of the container housing box body in Fig. 2 taken along line W-W [Figure 9] Transverse cross-sectional view of the main part showing each reinforcing flap of the second and fourth side parts in the middle of being folded in [Figure 10] Perspective view of the main part showing the structure of the first side part and the buffer flaps [Figure 11] Front view showing the container [Figure 12] Side view showing the container

Mode 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 A of the present disclosure includes a container 90 having a cylindrical column body portion 93, a first liquid passage portion 91 connected to one end of the column body portion 93 in the direction of the cylindrical axis p, and a second liquid passage portion 92 connected to the other end in the direction of the cylindrical axis p, and a rectangular parallelepiped corrugated cardboard box B having a depth direction, a longitudinal direction and a short direction, which houses two containers 90, 90 arranged in parallel in the short direction.

[0017] As shown in Figures 1-3 and 4, 5, the corrugated cardboard box B 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 of the 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 portion 7 has a base portion 7d having an opening 8 into which the column body portion 93 is placed, and a first folded portion b1 connecting the upper side 1U of the first side portion 1 and the base portion 7d. It is separate from the cardboard box B and further has an inner lid C positioned between the base 7d and the lid 6. The inner lid C has an upper opening 9 into which the upper part of the column body 93, which is positioned by dropping it into the opening 8, is fitted. In the state where the column body portion 93 is dropped into the opening 8 of the base portion 7d and fitted into the upper opening 9 of the inner lid portion C, the steps SB of the corrugated cardboard box B and the steps SC of the inner lid portion C are set so that the steps of the base portion 7d and the steps of the inner lid portion C intersect.

[0018] As shown in Figures 1-3, 7, 8, and 10, in the container housing box A, each container 90 is positioned with the column body 93 dropped into the opening 8 and the first and second liquid passage tubes 91 and 92 resting on the base 7d, and the inner lid C is assembled to the cardboard box B such that the upper part of the column body 93 is fitted into the upper opening 9 of the inner lid body 10. The container 90 can be housed with a gap so that the column body 93 does not come into contact with the bottom 5, and is positioned in the cardboard box B in a fixed position without shifting.

[0019] In addition, since the upper part of the column body 93 is fitted into the upper opening 9 of the inner lid C located below the lid 6, it becomes possible to house the container 90 without the column body 93 contacting the lid 6. Therefore, a gap can be created between the column body 93 and the bottom 5 and lid 6, and even if some force is applied to the bottom 5 and lid 6, which are susceptible to external forces acting in the direction of gravity, that force is less likely to reach the container 90, resulting in sufficient impact resistance and excellent protective function.

[0020] The container 90 is positioned with the column body 93 dropped into the opening 8 on the base portion 7d of the buffer flap portion 7, which is connected to the first side portion 1 via the first folded portion b1. This allows the column body 93 to be housed with a gap so that it does not come into contact with the bottom portion 5. In addition, a spacing-retaining flap portion 20 is folded towards the lid portion 6, providing an intermediate lid portion C that is positioned a predetermined distance below the lid portion 6. The upper part of the column body 93 is fitted into the upper opening 9 of the intermediate lid body portion 10 of the intermediate lid portion C. This allows the column body 93 to be housed with a gap so that it does not come into contact with the lid portion 6. In other words, the inner lid C has an inner lid body 10 with an upper opening 9, and a spacing-retaining flap portion 20 that is connected to the first side 1 side end and the third side 3 side end and / or the second side 2 side end and the fourth side 4 side end of the inner lid body 10 and is bent toward the lid portion 6, and it is preferable that the movement of the inner lid body 10 toward the lid portion 6 is restricted by the contact between the tip of the spacing-retaining flap portion 20 (the tip on the side opposite to the inner lid body 10) and the lid portion 6.

[0021] As shown in Figures 4 and 5, in corrugated cardboard dB, which is the paper used to make corrugated cardboard box B, stronger load-bearing capacity is exhibited in the direction along the corrugations than in the direction along the flow (the direction intersecting the corrugations). Therefore, by intersecting the corrugation SB of the base portion 7d of the buffer flap 7 with the corrugation SC of the inner lid body portion 10 of the inner lid portion C, the corrugated cardboard box B is endowed with strong load-bearing capacity in both the longitudinal direction x (direction of the cylindrical axis p) and the transverse direction y (lateral direction) intersecting the cylindrical axis p of the column body portion 93, thereby restricting the movement of the container 90 in both the longitudinal direction x and the transverse direction y.

[0022] In the container housing box A of this disclosure, by intersecting the step SB of the buffer flap 7 (see Figure 4) and the step SC of the inner lid C (see Figure 5), the container 90 can be effectively restricted from moving in both the direction of its cylindrical axis p and the lateral direction intersecting the cylindrical axis p. At the same time, the container 90 can be housed above and below the bottom 5 and lid 6, which are susceptible to impact and force. As a result, even if some impact acts on the bottom 5 or lid 6, it will not reach or will be difficult to reach the container 90.

[0023] As a result, while retaining the use of inexpensive corrugated cardboard boxes B, structural improvements to the corrugated cardboard boxes B make it possible to provide a container housing box A that is suitable for housing containers 90 that require high airtightness and pressure resistance, has excellent impact resistance, and can effectively restrict the movement of containers 90 in both the direction of the cylindrical axis p (longitudinal direction x) and the lateral direction (short direction y).

[0024] As shown in Figures 1, 2, 7, and 8, in each container 90, when the column body 93 is dropped into the opening 8, the first and second liquid passage tubes 91 and 92 are placed on the base 7d, and preferably, in addition to the bottom 5, the second inner sheet 2n of the second reinforcing flap 2F connected to the second side 2 and the fourth inner sheet 4n of the fourth reinforcing flap 4F connected to the fourth side 4 are arranged overlapping below the column body 93. In other words, the container 90 housed in the cardboard box B is in a fixed position with the column body 93 dropped into the opening 8, restricting its movement in all directions, and at least the bottom 5 relative to the column body 93 is substantially triple-layered. In Figures 7, 8, and Figure 9 (described later), the thickness of the cardboard dB has been slightly exaggerated to aid in understanding the structure.

[0025] In this container housing box A, the two containers 90, 90 are housed in the cardboard box B in a fixed position without shifting, and it is preferable that the bottom 5 is formed with a substantially triple-layer structure relative to the column body 93. As a result, the bottom 5 has sufficient impact resistance against forces acting on it, and excellent protective function is achieved. Consequently, by using an inexpensive cardboard box B and improving the structure of the cardboard box B, a container housing box A with excellent impact resistance is obtained, suitable for housing containers 90 that require high airtightness and pressure resistance.

[0026] As shown in Figures 6, 11, and 12, an example of a container 90 is a medical container 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 or the like, 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 or the like. 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 11 and 12, the container 90 is depicted with a simplified outline for simplicity.

[0027] 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.

[0028] 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.

[0029] As shown in Figures 1 to 3, the corrugated cardboard box B is a rectangular box having a longitudinal direction x (left-right), a transverse direction y (front-back), and a depth direction z (up-down), and can accommodate two containers 90, 90 arranged side by side in the transverse direction y. An outer cover flap 6A is connected to the front end (F side in Figure 2) of the lid 6, which is connected to the third side 3 by its upper side 3U, and an insert piece 6b is connected to the front end (bottom side in Figure 2) of the outer cover flap 6A. Each container 90, 90 is positioned by dropping its column body 93 into the opening 8 of the base 7d that follows the first side 1, and by fitting it into the upper opening 9 of the inner lid C (see Figures 2, 5 to 7), which is separate from the corrugated cardboard box B, and is housed in the corrugated cardboard box B in this positioned state. In the corrugated cardboard box B and the container housing box A, 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. Figure 3 is a perspective view of the corrugated cardboard box B with the lid portion 6 half-open, viewed from diagonally above (the illustration of the inner lid portion C is omitted).

[0030] Figure 4 shows a diagram of how to make a corrugated cardboard box B, used for container housing body A, from a single sheet of corrugated cardboard dB. The corrugated cardboard dB shown in Figure 4 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, with a corrugated cardboard core 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 dB having the unfolded shape shown in Figure 4, it is preferable that the corrugations SB are set to face the depth direction z (see Figure 3) of the first to fourth sides 1 to 4.

[0031] In Figures 7 to 9, the hatching showing the cross-section of the corrugated cardboard is such that the hatching slopes downward to the right in the cross-section where the corrugation SB 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 SB) is visible. Note that the corrugation is sometimes called a groove.

[0032] As shown in Figure 4, the corrugated cardboard box B 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 preferably forms the rectangular corrugated cardboard box B shown in Figures 1 to 3. Preferably, 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. Preferably, the buffer flap 7 has a first folded portion b1 connected to the first side 1 at the upper side 1U, a base portion 7d connected to the first folded portion b1, and second auxiliary flaps 7s, fourth auxiliary flaps 7f, and third auxiliary flap portions 7c, each connected to the base portion. Preferably, two openings 8, 8 are formed in the base portion 7d, aligned in the short direction y. Preferably, 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.

[0033] Preferably, 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. Preferably, 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.

[0034] 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 piece 3s, which is a connecting piece, 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 an insert piece 6b for closing and locking is connected to the outer cover flap 6A. Preferably, the adhesive piece 3s formed on the third side portion 3 is attached to the corresponding part of the fourth side portion 4 by adhesive or the like (see also Figure 4). The integration of the third side portion 3 and the fourth side portion 4 by the adhesive piece 3s forms rectangular loop-shaped first to fourth side portions 1 to 4 (see Figure 3).

[0035] 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.

[0036] As shown in Figures 4 and 7, 8, the bottom 5 is preferably formed by alternately overlapping four bottom flaps 5A to 5D in order and partially gluing them together. The ends of the first and third bottom flaps 5A and 5C in the longitudinal direction x are preferably formed in a portion that has a length exceeding half the length of the short direction y of the corrugated cardboard box B, and the first and third overlapping portions 51t and 53t for gluing are preferably formed on one of the ends. For example, by sequentially overlapping and assembling the first to fourth bottom flaps 5A to 5D, which are set to the shape and size shown in Figure 4, while 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 7, 8, 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.

[0037] 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.

[0038] As shown in Figures 3, 8, and 10, it is preferable that a second auxiliary flap 7s is formed which is connected to the second side portion 2 of the base portion 7d and bent toward the bottom portion 5 (downward in Figure 10, etc.), a fourth auxiliary flap 7f is formed which is connected to the fourth side portion 4 of the base portion 7d and bent toward the bottom portion 5, and a third auxiliary flap portion 7c is formed which is connected to the third side portion 3 of the base portion 7d and bent toward the bottom portion 5.

[0039] In the buffer flap portion 7, the first folded portion b1 is bent approximately 180 degrees inward and downward at the upper edge 1U so as to conform to the inner surface of the first side portion 1, and the base portion 7d is bent approximately 90 degrees upward relative to the first folded portion b1. The second auxiliary flap 7s, the fourth auxiliary flap 7f, and the third auxiliary flap portion 7c are each bent approximately 90 degrees downward relative to the base portion 7d, and the lower ends of these three 7s, 7f, and 7c are set to a length that allows them to abut against the inner surface of the bottom portion 5. Therefore, it is preferable that the base portion 7d is held at a predetermined height relative to the bottom portion 5 by the tension of the second to fourth auxiliary flaps 7s, 7c, and 7f relative to the bottom portion 5 and the suspension of the first folded portion b1. As shown in Figures 1-3, 7, 8, and 10, the container 90 is preferably housed in a cardboard box B in a state where it is stably supported by the base 7d. The length from the lower end to the upper end of the second auxiliary flap 7s, the fourth auxiliary flap 7f, and the third auxiliary flap 7c are longer than the difference between the outer radius of the cylindrical column body 93 and the outer radius of the cylindrical first liquid passage section 91 or the second liquid passage section 92.

[0040] As shown in Figures 3, 7, and 9, the second folded portion b2 is folded inward and downward by approximately 180 degrees along its upper edge 2U so as to conform to 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 conform to 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. Figure 9 shows the intermediate state of the operation in which the second and fourth reinforcing flap portions 2F and 4F are folded and inserted into the inside of the box relative to the second and fourth side portions 2 and 4. When assembling the cardboard box B, the order is to insert the second and fourth reinforcing flap portions 2F and 4F into the inside of the box, and then insert the cushioning flap portion 7 into the inside of the box. In Figure 7 and other figures, the second insole portion 2n is positioned below and adjacent to the fourth insole portion 4n, but the orientation can be reversed and is not a concern.

[0041] As shown in Figure 7, it is preferable that the tip 2t of the second insert portion 2n on the fourth side portion 4 side extends beyond the longitudinal center E, which is the midpoint of the longitudinal direction x of the bottom portion 5, to the fourth side portion 4 side, and that the tip 4t of the second side portion 2 side of the fourth insert portion 4n extends beyond the longitudinal center E of the bottom portion 5 to the second side portion 2 side. With this configuration, the opposing second and fourth insert portions 2n and 4n overlap each other beyond the longitudinal center E, which is preferable because it can enhance the protective function of the central part of the column body portion 93 in the direction of the cylindrical axis p.

[0042] As shown in Figure 4, the opening 8 is preferably a rectangular opening having a first opening edge 8a located on the side of the first side portion 1, a second opening edge 8b located on the side of the second side portion 2, a third opening edge 8c located on the side of the third side portion 3, and a fourth opening edge 8d located on the side of the fourth side portion 4. Furthermore, as shown in Figure 7, it is preferable that the tip 2t of the second insole portion 2n on the side of the fourth side portion 4 reaches a position corresponding to at least the vicinity of the fourth opening edge 8d in the longitudinal direction x, and the tip 4t of the fourth insole portion 4n on the side of the second side portion 2 reaches a position corresponding to at least the vicinity of the second opening edge 8b in the longitudinal direction x. It is even more preferable that each of the tips 2t and 4t extends beyond the corresponding fourth and second opening edges 8d and 8b (see Figure 7).

[0043] With the aforementioned configuration, the opposing second and fourth insole portions 2n and 4n overlap in a manner that covers the opening 8 in the longitudinal direction x when viewed from above. As a result, the bottom portion 5 effectively becomes a bottom with at least a triple-layered structure extending over the entire length x of the column body portion 93, greatly increasing the impact resistance from below and providing robust protection.

[0044] As shown in Figures 7 and 8, when the column body 93 is placed in the opening 8, the steps SB of the corrugated cardboard box B are set so that the steps of the base 7d are aligned with the shorter 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 steps SB are set in the direction along the depth direction z in the corrugated cardboard box B shown in Figure 3. With this configuration, when the container 90 is placed inside, the first and third opening edges 8a and 8c into which the outer circumferential surface of the column body 93 fits become edges aligned with the flow direction of the corrugated cardboard dB, and the second and fourth opening edges 8b and 8d into which both end faces of the cylindrical axis p of the column body 93 fit become edges aligned with the step direction of the corrugated cardboard dB.

[0045] Therefore, when the first and second liquid passage tubes 91 and 92 are placed on the base portion 7d and the column body portion 93 is dropped into the opening 8, even if the column body portion 93 is somewhat forcibly fitted in the short direction y, the first and third opening edges 8a and 8c, which have strong end faces in the direction of the stepped SB, can withstand the deformation, which is preferable. For example, a structure can be adopted in which the first and second liquid passage tubes 91 and 92 are placed on the base portion 7d and the column body portion 93 is placed on the first and third opening edges 8a and 8c, which is preferable because the load of the container 90 can be distributed over a wide area.

[0046] As shown in Figures 5, 7, and 8, the container housing box A of the present disclosure is separate from the corrugated cardboard box B and is positioned between the base portion 7d and the lid portion 6, and further has an inner lid portion C that is placed over the container 90 placed on the base portion 7d and loaded into the corrugated cardboard box B. The inner lid portion C has an inner lid body portion 10 with upper openings 9, 9 into which the upper part of the column body portion 93, which is positioned to be dropped into the opening 8, is fitted, and spacing-retaining flap portions 20 that are connected to the first side portion 1 side end and the third side portion 3 side end and / or the second side portion 2 side end and the fourth side portion 4 side end of the inner lid body portion 10 and are bent toward the lid portion 6, and a position identification hole h of the inner lid portion C is provided in one of the spacing-retaining flap portions 20.

[0047] More specifically, the first spacing flap portion 21, which is the spacing flap portion 20 at the side end of the first side portion 1, the second spacing flap portion 22, which is the spacing flap portion 20 at the side end of the second side portion 2, the third spacing flap portion 23, which is the spacing flap portion 20 at the side end of the third side portion 3, and the fourth spacing flap portion 24, which is the spacing flap portion 20 at the side end of the fourth side portion 4 are connected to the inner lid body portion 10. It is preferable that all four of these spacing flap portions 21 to 24 be folded approximately 90 degrees toward the lid portion 6 side (upper side in Figures 7 and 8) and incorporated into the cardboard box B. The posture identification hole h is preferably set to a hole large enough to insert a finger, such as a circular hole with a diameter of 20 mm, and is preferably provided on either the first or third spacing flap 21 or 23, but is even more preferably located at the end of the first spacing flap portion 21 toward the side end of the second side portion 2.

[0048] Preferably, the first to fourth spacing-retaining flap portions 21 to 24 are members that can restrict the movement of the inner lid body portion 10 toward the lid portion 6 by contacting the inner surface of the lid portion 6, more specifically, the lid portion 6 in the closed state as shown in Figures 1 and 2. Preferably, the length of each spacing-retaining flap portion 21 to 24 toward the lid portion 6 is set to a length that restricts the movement of the inner lid body portion 10 toward the lid portion 6 from the state in which the upper part of the column body portion 93 is fitted into the upper opening 9 (see Figure 8). In Figure 8, the inner lid portion C is drawn at the height position in which the spacing-retaining flap portion 20 is in contact with the lid portion 6, but at the drawn height position, the size of the upper opening 9 is larger in the short-side direction y than the upper part of the column body portion 93, so it is also preferable that in the actual storage state the inner lid portion C settles at a height position slightly lower than the height position shown in Figure 8.

[0049] As shown in Figures 2, 4, 5, 7, and 8, when the column body 93 is dropped into the opening 8 of the base 7d and fitted into the upper opening 9 of the inner lid C, it is preferable that the steps SB of the corrugated cardboard box B and the steps SC of the inner lid C are set so that they intersect. The steps in the base 7d extend in the short direction y, which is also the front-to-back direction, and it is preferable that the cross section of the base 7d in Figure 7 shows the wave shape of the core (hatching downward to the right), and the cross section of the base 7d in Figure 8 shows the wave shape not shown (hatching downward to the left). It is preferable that the cross section of the inner lid body 10 in Figure 7 shows the wave shape not shown (hatching downward to the left), and the cross section of the inner lid body 10 in Figure 8 shows the wave shape of the core (hatching downward to the right). The direction of the step between the base portion 7d and the inner lid body portion 10 may be reversed from the direction described above.

[0050] Although not shown in the diagram, the second and fourth insole sections 2n and 4n may be made long enough to reach the opposing side sections 4 and 2, or their lengths in the longitudinal direction x and the transverse direction y may be made different from each other. The shape and size of the second and fourth folded sections b2 and b4 can also be changed as appropriate. The main point is that the second insole section 2n and the fourth insole section 4n overlap vertically below the opening 8, and the shape and size of the second and fourth reinforcing flap sections 2F and 4F are not limited to those shown in Figure 4, etc. The opening 8 and the upper opening 9 are formed as rectangular holes, but they are not limited to rectangles; for example, the width of the central part in the longitudinal direction (width in the transverse direction y) may be slightly narrowed to conform to the shape of the column body section 93.

[0051] [Alternative Embodiment] The step SB of the base portion 7d and the step SC of the inner lid body portion 10 may be set in the opposite direction to that shown in Figures 4, 5, and 7. Furthermore, while the intersection angle of the steps SB and SC is preferably 90 degrees, they may intersect at angles other than 90 degrees, such as 75 degrees or less than 90 degrees, 60 degrees or less than 90 degrees, or 45 degrees or less than 90 degrees. For example, the first and third spacing-holding flap portions 21 and 23 may be folded toward the bottom portion 5, the second and fourth spacing-holding flap portions 22 and 24 may be folded toward the lid portion 6, and a posture identification hole h may be provided in either the second spacing-holding flap portion 22 or the fourth spacing-holding flap portion 24.

[0052] As shown in Figures 8 and 10, it is preferable that the distance e between the opening 8 (specifically the first opening edge 8a) and the inner surface of the first folded portion b1 (sometimes referred to as the first distance e) is narrower than the distance f between the opening 8 (specifically the third opening edge 8c) and the inner surface of the third side portion 3 (sometimes referred to as the third distance f). In the case of the corrugated cardboard box B, since the third auxiliary flap portion 7c of the base portion 7d and the third side portion 3 are in close contact, the distance f between the opening 8 and the inner surface of the third side portion 3 can also be referred to in Figure 10 as the distance f between the third opening edge 8c of the opening 8 on the third side portion 3 side and the end of the base portion 7d on the third side portion 3 side. If there are two or more openings 8, it is preferable that the first opening edge 8a and the third opening edge 8c corresponding to the inner surface of the first folded portion b1 and the inner surface of the third side portion 3 refer to whichever is closer.

[0053] On the inner side of the first side portion 1, a first folded portion b1 is present to form a double side wall, which has higher strength and rigidity than the third side portion 3 that is a single side wall. Therefore, it is preferable that the third interval f is made larger than the first interval e (e<f), and the column main body portion 93 is arranged offset toward the first side portion that is excellent in the protection function from the lateral direction (the short side direction y). That is, since the deformation of the first side portion 1 against a lateral force can be smaller than the deformation of the third side portion 3, it is possible to enhance the lateral impact resistance while maintaining balance, which is preferable. In this way, while using the corrugated cardboard box B made of one sheet of corrugated cardboard, a positioned state can be achieved by the drop-in arrangement of the column main body portion 93, and the lateral protection function of the column main body portion 93 in the short side direction y can be enhanced with good left-right balance.

Description of Reference Signs

[0054] 1 First side portion 1U Upper side of the first side portion 2 Second side portion 2F Second reinforcing flap portion 2U Upper side of the second side portion 2n Second insole portion 3 Third side portion 3U Upper side of the third side portion 4 Fourth side portion 4F Fourth reinforcing flap portion 4U Upper side of the fourth side portion 4n Fourth insole portion 5 Bottom portion 6 Lid portion 7 Cushioning flap portion 7d Pedestal portion 8 Opening portion 9 Upper opening portion 10 Inner lid main body portion 20 Spacing maintaining flap 51 First bottom side 52 Second bottom side 53 Third bottom side 54 Fourth bottom side 90 Container 91 First liquid passage pipe portion 92 Second liquid passage pipe portion 93 Column main body portion A container housing box B Cardboard box C Inner lid part SB cardboard box (base section 7d) ridge Steps in the SC inner lid (inner lid body part 10) b1 First fold 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 has a base portion having an opening into which the column body portion is placed, and a first folded portion connecting the upper side of the first side portion to the base portion. It is separate from the aforementioned cardboard box and further has an inner lid that is positioned between the base and the lid, The aforementioned inner lid portion has an upper opening into which the upper part of the column body portion, which is positioned to be dropped into the opening, A container housing box in which, when the column body is dropped into the opening of the base and fitted into the upper opening of the inner lid, the steps of the corrugated cardboard box and the steps of the inner lid are set so that the steps of the base and the steps of the inner lid intersect.

2. The container storage box according to claim 1, wherein the steps of the corrugated cardboard box are set so that the steps of the base portion are aligned with the radial direction of the column body portion which is recessed into the opening, and the steps of the inner lid portion are set so that they are aligned with a direction perpendicular to the radial direction.

3. The container housing box according to claim 1 or 2, wherein the base portion and the first liquid passage portion and the second liquid passage portion, which are arranged on the lid side of the base portion, are in contact with each other.

4. The container housing box according to claim 1 or 2, wherein, when the upper part of the column body is fitted into the upper opening, the size of the upper opening is set such that the first liquid passage section and the second liquid passage section come into contact with the inner lid body.

5. The inner lid portion comprises an inner lid body portion having the upper opening, and a spacing-retaining flap portion that is connected to the first side end and the third side end and / or the second side end and the fourth side end of the inner lid body portion and is bent toward the lid portion. The container housing box according to claim 1 or 2, wherein the movement of the inner lid body toward the lid is restricted by the contact between the tip of the spacing-retaining flap and the lid.

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