JP7349775B2 - Box and its blank sheet - Google Patents

Description

The present invention relates to a box and its blank sheet, and is particularly suitable as a cardboard box used for transporting a tray packed with products, but is not limited thereto.

Products such as strawberries, which are typical of perishable fruits, are sold in stores at consumption areas in advance packed in trays made of transparent resin films such as A-PET (amorphous polyethylene terephthalate) and OPS (biaxially oriented polyethylene). be done. In addition, trays packed with such products are generally packed into cardboard boxes or the like in multiple units and transported from the production area to the consumption area. The cardboard boxes used here usually accommodate four or six packs of trays packed with products, stacked flat. To prevent the contained trays from colliding with each other or partially overlapping each other during transportation of the cardboard boxes, four trays are placed adjacent to each other using a partition member formed by criss-crossing card-shaped cardboard sheets. Patent Document 1 proposes a technique in which a portion is interposed. Moreover, a cardboard box in which a partition wall is integrally formed is also proposed in Patent Document 2.

Japanese Patent Application Publication No. 2003-312640 Japanese Patent Application Publication No. 2015-134636

In the technology proposed in Patent Document 1, since the partition member is separate from the cardboard box, the partition member is separated from the blank sheet, and the partition member is removed after the tray packed with products is placed inside the cardboard box. It needs to be inserted between four adjacent trays. In addition, because the partition members are not integrally fixed to the cardboard box, whenever an individual tray moves due to vibration during transportation, the movement is transmitted to other trays via the partition members, causing product damage. There was a risk that the damage would spread.

Furthermore, the technology proposed in Patent Document 2 has the drawback that the assembly of the cardboard box is much more complicated than in Patent Document 1, and the assembly takes time. In addition, since there are no bars that cover part of the opening of the box, it is easy to put the tray in and take it out of the cardboard box. There is a possibility that some of the products may fall out. This, together with the need for a separate lid plate to close the opening of the cardboard box stacked on top, has the drawback of increasing the unit price of the cardboard box.

SUMMARY OF THE INVENTION An object of the present invention is to provide a box having an integrated partition wall that allows goods to be taken out and put in easily and quickly and that is simpler than conventional boxes.

Another object of the present invention is to provide a blank sheet for manufacturing the above-mentioned box.

A first aspect of the present invention includes a rectangular bottom wall section partitioned by a pair of mutually parallel first edges and a pair of mutually parallel second edges that are perpendicular to these first edges; a pair of first side walls rising from the edges at right angles to the bottom wall; a pair of second side walls rising from the pair of second edges at right angles to the bottom wall; a receiving wall portion that protrudes from the bottom wall portion in parallel with the pair of first side wall portions at an intermediate position in the opposing direction of the first side wall portions, and has a slot formed from an upper end toward the bottom wall portion; and the first edge a pair of first side wall reinforcing portions each connected to the upper ends of the pair of first side wall portions via a third edge parallel to the side wall portions and disposed inside the pair of first side wall portions, and the first edge portion; The receiver is connected to at least one end of the pair of first side wall reinforcing portions parallel to the pair of second side wall portions through a fourth edge perpendicular to the first edge and the second edge. The box comprises a plurality of partition walls formed with slots that engage with the slots formed in the wall and are connected to the receiving wall in a crosswise manner.

In the box according to the first aspect of the present invention, only one receiving wall portion is formed, and the slot formed in this receiving wall portion is located at an intermediate position in the opposing direction of the pair of second side wall portions, and two The two partition walls may be connected to the receiving wall in an overlapping state.

In this case, one of the first side wall reinforcing portions is biased toward one of the second side wall portions, and the other first side wall reinforcing portion is biased toward the other of the second side wall portions, The one end of the one first side wall reinforcing part is located on the other second side wall part side, and the one end of the other first side wall reinforcing part is located on the one second side wall part side. is preferred. Further, a pair of second side wall reinforcing portions are connected to the other ends of the pair of first side wall reinforcing portions via an edge parallel to the fourth edge, and are overlapped with the pair of second side wall portions, respectively. You can get it.

The two receiving walls are spaced apart along the first edge, from one of the second side walls to a slot of one of the partition walls located closer to the one of the second side walls. , a distance from the other second side wall to a slot of the other partition wall located closer to the other second side wall, and a distance between the slots of the two partition walls. They may be equal.

In this case, the pair of first side wall reinforcement parts are connected to the partition wall parts at both ends thereof along the first edge, and these partition wall parts are respectively connected to the two receiving wall parts. It can be anything.

Alternatively, one of the first side wall reinforcing portions is disposed biased toward one of the second side wall portions, and the other first side wall reinforcing portion is biased toward the other of the second side wall portions, and the The one end of one first side wall reinforcing part is located on the other second side wall part side, and the one end of the other first side wall reinforcing part is located on the one second side wall part side, The partition wall portion connected to the one end of the first side wall reinforcing portion is connected to the other receiving wall portion, and the partition wall portion connected to the one end of the other first side wall reinforcing portion is connected to the one receiving wall portion. It may be connected to In this case, a pair of second side wall reinforcing portions are further connected to the other ends of the pair of first side wall reinforcing portions via edges parallel to the fourth edge, and superimposed on the pair of second side wall portions, respectively. can be equipped.

two pairs of crosspiece receivers each connected to both ends of the pair of first side walls along the first edge in parallel with the bottom wall via the third edge; an insertion slot formed to include a part of the third edge; and a fifth edge parallel to the second edge at the upper end of the pair of second side walls, respectively parallel to the bottom wall. a pair of reinforcing bars that are connected and whose ends along the second edge overlap at least a portion of the pair of bar receivers; and a pair of reinforcing bars that are parallel to the first edge at both ends of the pair of reinforcing bars. The device may further include two pairs of insertion tabs, each parallel to the first side wall portion via a sixth edge and inserted into the insertion slot, respectively.

The pair of first side wall portions may further include two pairs of seam allowance portions that are overlapped on the inner sides of the pair of second side wall portions, respectively, via edges parallel to the fourth edge.

a positioning protrusion projecting from the pair of first side walls beyond the third edge; and a positioning locking hole formed in the bottom wall along the first edge for locking.

A second form of the present invention is a blank sheet for a box according to the first form of the present invention, which includes a pair of mutually parallel first fold lines and mutually parallel lines perpendicular to the first fold lines. a rectangular bottom wall portion partitioned by a pair of second bending lines; a pair of first sidewall portions each extending from the bottom wall portion via the pair of first bending lines; and a pair of second bending lines. a pair of second side walls extending from the bottom wall via a third bending line parallel to the first bending line on the opposite side of the bottom wall with the first sidewall in between; a pair of first side wall reinforcing portions each extending from the pair of first side wall portions; and the pair of first side walls extending along the third bending line via a fourth bending line parallel to the second bending line. a plurality of partition walls each extending from at least one end of the reinforcing portion; and slots each formed from an edge of the plurality of partition walls opposite to the third bend line toward the third bend line; , a center bending line formed on the bottom wall section parallel to the pair of first bending lines at an intermediate position in the opposing direction of the pair of first bending lines; and a center bending line formed on the bottom wall part in parallel with the pair of first bending lines; a slit carved in the part to define the contour of the receiving wall; and a slot part defining a part of the slit and into which the slot formed in the partition wall is engaged during assembly. It is characterized by:

In the box blank sheet according to the second aspect of the present invention, only one central fold line is formed, and the slot portion is located on an extension of the fourth fold line and extends from the pair of second fold lines. They may be equidistant. In this case, one of the first side wall reinforcing portions is biased toward one of the second side wall portions, and the other first side wall reinforcing portion is biased toward the other of the second side wall portions, The fourth bending line of the one first side wall reinforcing portion is located on the other second side wall side, and the fourth bending line of the other first side wall reinforcing portion is located on the one second side wall side. It may be located in The device may further include a pair of second side wall reinforcing portions extending from the other end of the first side wall reinforcing portion via bending lines parallel to the fourth bending line.

The two central folding lines and the slits are spaced apart from each other along the first folding line, and one of the slits is located closer to one of the second folding lines. the distance to the slot portion, the distance from the other second bending line to the slot portion of the other slit located closer to the other second bending line, and the slot portions of the two slits. may be set to be equal to the distance.

In this case, the first side wall reinforcing portion is such that the pair of partition walls connected to the two receiving walls are connected to each other from both ends along the third bending line via the fourth bending line. It is preferable that they each extend.

Alternatively, one of the first side wall reinforcing portions is disposed biased toward one of the second side wall portions, and the other first side wall reinforcing portion is biased toward the other of the second side wall portions, and the The fourth bending line of one first sidewall reinforcing portion is located on the other second sidewall side, and the fourth bending line of the other first sidewall reinforcing portion is located on the one second sidewall side. It may be located. In this case, a pair of second side wall reinforcing parts may be further provided, each extending from the other end of the first side wall reinforcing part via a bending line parallel to the fourth bending line.

two pairs of crosspiece receiving portions each extending from the pair of first side wall portions via the third bending line, and a part of the third bending line formed along the third bending line; a pair of reinforcing bars each extending to the pair of second side wall portions via a fifth bending line parallel to the second bending line; The device may further include two pairs of bayonet tabs each extending through a sixth fold line parallel to the first fold line and inserted into the bayonet slots during assembly.

The device may further include two pairs of joint allowance portions extending from both ends of the pair of first side wall portions along the first bending line via bending lines parallel to the second bending line.

a plurality of positioning protrusions that respectively protrude from the pair of first side walls beyond the third bending line toward the first sidewall reinforcing part or the partition wall; and the bottom wall in contact with the first bending line. The device may further include a plurality of positioning locking holes formed in the portion and into which the positioning protrusions are respectively inserted during assembly.

The blank sheet of the box may be made of one corrugated cardboard sheet, and the first folding line may be a horizontal ruled line, and the second folding line may be a vertical ruled line.

According to the box of the present invention, it is possible to provide a box having a partition wall of a simpler monolithic structure than the conventional box.

If the two partition walls overlap and their tips are connected to one receiving wall, a strong four-partitioned box can be provided.

When the two receiving walls are spaced apart along the first edge, a box partitioned into six parts can be provided. In particular, when the partition walls extend from both ends of the pair of first side wall reinforcements and are connected to the two receiving walls, a stronger box can be provided.

If the box further includes a reinforcing crosspiece connected to the second sidewall and having both ends overlapped with the crosspiece receivers extending from both ends of the first sidewall, the rigidity of the box can be further increased. Moreover, it is also possible to prevent the trays housed in the box from flying out.

FIG. 3 is a three-dimensional projection view showing the appearance of stacked boxes according to an embodiment of the present invention. 2 is a three-dimensional projection view showing the appearance of a blank sheet of the box shown in FIG. 1. FIG. 6 is a three-dimensional projection view schematically showing the procedure for assembling the box shown in FIG. 1 from the blank sheet shown in FIG. 2 together with FIGS. 4 to 6. FIG. FIG. 6 is a three-dimensional projection view schematically showing the procedure for assembling the box shown in FIG. 1 from the blank sheet shown in FIG. 2 along with FIGS. 3, 5, and 6. FIG. 6 is a three-dimensional projection view schematically showing the procedure for assembling the box shown in FIG. 1 from the blank sheet shown in FIG. 2 along with FIGS. 3, 4, and 6. 5 is a three-dimensional projection view schematically showing the procedure for assembling the box shown in FIG. 1 from the blank sheet shown in FIG. 2 together with FIGS. 3 to 5. FIG. FIG. 2 is a cross-sectional view of the box along arrow VII-VII in FIG. 1; FIG. 7 is a three-dimensional projection view showing the appearance of stacked boxes according to another embodiment of the present invention. 9 is a three-dimensional projection view showing the appearance of the blank sheet of the box shown in FIG. 8. FIG. 11 to 13 are three-dimensional projection diagrams schematically showing the procedure for assembling the box shown in FIG. 8 from the blank sheet shown in FIG. 9. FIG. FIG. 10, FIG. 12, and FIG. 13 are three-dimensional projection diagrams schematically showing the procedure for assembling the box shown in FIG. 8 from the blank sheet shown in FIG. 9; FIG. 10, FIG. 11, and FIG. 13 are three-dimensional projection diagrams schematically showing the procedure for assembling the box shown in FIG. 8 from the blank sheet shown in FIG. 9; 10 to 12 are three-dimensional projection diagrams schematically showing the procedure for assembling the box shown in FIG. 8 from the blank sheet shown in FIG. 9. FIG. FIG. 7 is a three-dimensional projection view showing the appearance of a box according to another embodiment of the present invention. 15 is a three-dimensional projection view showing the appearance of the blank sheet of the box shown in FIG. 14. FIG.

An embodiment in which the present invention is applied to a cardboard box for a tray in which strawberries are packed will be described in detail with reference to FIGS. 1 to 15. However, the present invention is not limited to such embodiments, and the configuration can be changed or modified as appropriate depending on the characteristics and functions required of the box.

The appearance of the box according to the first embodiment of the present invention is shown in FIG. 1 in a partially stacked state, the appearance of the blank sheet of this box is shown in FIG. 2, and the assembly procedure of this blank sheet is schematically shown in FIGS. Shown in Figure 6. That is, the box 10 in this embodiment is assembled from a blank sheet 10B made of double-sided corrugated paper with a single flute as shown in FIG. Four T's can be stacked flat. However, the box 10 may be made of a material such as a plastic sheet that can be used repeatedly, and is not limited to corrugated paper as in this embodiment. Not done.

The box 10 includes a bottom wall portion 11, a pair of first side wall portions 12, a pair of second side wall portions 13F, 13R, a receiving wall portion 14, a pair of first side wall reinforcement portions 15F, 15R, and a partition wall. 16F, 16R, two pairs of crosspiece receiving parts 17F, 17R, and a pair of reinforcing crosspieces 18.

The rectangular bottom wall portion 11 has a pair of mutually parallel first edges, that is, a first folding line L1, and a pair of mutually parallel second edges that are orthogonal to these first folding lines L1, that is, a second folding line. It is separated from L2. The length of the first bending line L1 and the length of the second bending line L2 are determined to be the minimum size that can comfortably accommodate four trays T, and the length and width of one tray T, respectively. It is set to be slightly longer than twice.

The pair of first side walls 12 and the pair of second side walls 13F, 13R stand up from the bottom wall 11 at right angles via the first bending line L1 and the second bending line L2, respectively, and surround the bottom wall 11. It is in a state. At both ends of the first side wall part 12 along the first bending line L1, a second side wall part 13F is provided via an edge perpendicular to the first bending line L1 and the second bending line L2, that is, a joint allowance bending line L7. , 13R, two pairs of seam allowance parts 19 overlapped with each other are connected to each other. When such a joint portion 19 extends from the first side wall portion 12, the box 10 can be assembled more firmly.

A receiving wall portion 14 protruding from the bottom wall portion 11 in parallel with the pair of first side wall portions 12 via the center bending line L8 is disposed at an intermediate position in the opposing direction of the pair of first side wall portions 12, and extends from its upper end to the bottom. A slot 14s is formed toward the wall portion 11. In this embodiment, only one receiving wall portion 14 is formed, and the slot 14s carved in this receiving wall portion 14 is located at an intermediate position in the opposing direction of the pair of second side wall portions 13F and 13R, and is a partition that will be described later. The slots 16s of the wall portions 16F and 16R are connected in a meshing state. In other words, the slot 14s as a slot portion in the present invention is located on an extension of the fourth bending line L4 and is equidistant from the pair of second bending lines L2.

The pair of first side wall reinforcement parts 15F, 15R are connected to the upper ends of the pair of first side wall parts 12 via the third edge parallel to the first bending line L1, that is, the third bending line L3, and 1 is arranged inside the side wall portion 12. In the present embodiment, one first side wall reinforcing portion 15F is biased toward one second side wall portion 13F, and the other first side wall reinforcing portion 15R is biased toward the other second side wall portion 13R. It is arranged. The first side wall part 12 and the first side wall reinforcement parts 15F, 15R are attached to the bottom wall part 11 at the edges of the first side wall reinforcement parts 15F, 15R on the opposite side to the third bending line L3 to resist springback during assembly. Two locking protrusions 20F and 20R are formed at a distance from each other to hold the locking projections at right angles. Furthermore, rectangular locking holes 11f and 11r corresponding to these locking protrusions 20F and 20R are formed in the bottom wall portion 11 in contact with the first bending line L1.

The partition wall parts 16F and 16R in this embodiment are one end of one first side wall reinforcing part 15F on the other second side wall part 13R side and one end of the other first side wall reinforcing part 15R on the one second side wall part 13F side. Each is connected to one end. These partition wall parts 16F, 16R are connected to the second side wall from one end of the first side wall reinforcement parts 15F, 15R via a fourth edge perpendicular to the first bending line L1 and the second bending line L2, that is, the fourth bending line L4. It extends parallel to the sections 13F and 13R. Each of the partition walls 16F and 16R is provided with a slot 16s that engages with a slot 14s formed in the receiving wall 14 and connects the partition walls 16F and 16R in a crossing state with respect to the receiving wall 14. ing. In this embodiment, the distance from the fourth bending line L4 to the slot 14s formed in the receiving wall portion 14 is set to be approximately half of the second bending line L2. As a result, the two partition walls 16F and 16R overlap with each other and are connected to one receiving wall 14, so that the box 10 is partitioned into four compartments corresponding to the dimensions of the tray T. ing. Further, at the other ends of the first side wall reinforcement parts 15F and 15R, a pair of second side wall reinforcements are superimposed on the second side wall parts 13F and 13R, respectively, via a reinforcing bending line L9 parallel to the fourth bending line L4. The section 21 is connected. When such second side wall reinforcing portions 21 are extended from the other ends of the first side wall reinforcing portions 15F and 15R, the strength of the box 10 can be further improved.

The two pairs of crosspiece receiving parts 17F and 17R are connected to both ends of the pair of first side wall parts 12 along the first bending line L1 in parallel to the bottom wall part 11 via the third bending line L3. . The crosspiece receiving parts 17F, 17R are provided with insertion slots 17f, 17r formed along the third bending line L3 so as to include a part of the third bending line L3. The crosspiece receiving part 17F located on the side where the second side wall reinforcement part 21 is arranged is a narrow top surface part formed between the upper end of the first side wall part 12 and the upper end of the first side wall reinforcement parts 15F and 15R. It has 22. This top surface portion 22 is connected to the first side wall portion 12 and the first side wall reinforcement portions 15F and 15R via a third bending line L3 and an edge parallel to this third bending line L3, that is, an auxiliary bending line L10, and The shaped structure defines a strong crosspiece receiving portion 17F.

Both end portions of the pair of reinforcing beams 18 along the second bending line L2 are overlapped with parts of the pair of beam receiving portions 17F and 17R. These reinforcing beams 18 are connected to the upper ends of the pair of second side walls 13F and 13R in parallel with the bottom wall 11, respectively, via fifth edges parallel to the second bending line L2, that is, the fifth bending line L5. ing. In addition, each side end of the pair of reinforcing beams 18 is connected to the first side wall 12 in parallel via a sixth edge parallel to the first bending line L1, that is, a sixth bending line L6, and is provided with an insertion groove. Two pairs of insertion tabs 23 are provided which are inserted into the holes 17f and 17r, respectively.

As shown in FIG. 7, which schematically shows a cross-sectional structure taken along the line VII-VII in FIG. 25 and positioning locking holes 11r and 11m. The positioning protrusions 25 each protrude from the pair of first side walls 12 beyond the third bending line L3. On the other hand, the positioning protrusion 24 formed on the top surface portion 22 has a gable three-dimensional shape. That is, the positioning protrusion 24 in this embodiment has a pair of positioning protrusion slits S1 cut across the third folding line L3 and the auxiliary folding line L10, and a pair of folding lines L11 and the top folding line L12. It is equipped with A pair of positioning protrusion slits S1 are cut across the third bending line L3 and the auxiliary bending line L10. A pair of bending lines L11 are respectively connected to both ends of the pair of positioning protrusion slits S1, and a top bending line L12 is arranged in the middle thereof. The positioning locking holes 11f and 11m include a first bending line L1, and the first bending line is such that the positioning protrusions 24 and 25 of the lower box 10 are locked when a plurality of boxes 10 are stacked vertically. It is formed on the bottom wall portion 11 along L1. In this embodiment, the positioning locking hole 11f into which the positioning protrusion 24 formed on the top surface portion 22 is inserted is shared with the locking hole 11f into which the locking projection 20F is inserted. Therefore, the upper box 10 is positioned relative to the lower box 10 so that the positioning protrusions 24 and 25 of the lower box 10 are locked into the positioning locking holes 11f and 11m of the boxes 10 stacked on the upper side. By stacking them, a stable stacked state can be maintained.

Note that, although the blank sheet 10B in this embodiment is set so that the first folding line L1 becomes a horizontal ruled line of the corrugated paperboard, and the second folding line L2 becomes a vertical ruled line of the corrugated paperboard, the present invention is not limited to this.

When assembling the box 10 in this embodiment from the blank sheet 10B shown in FIG. Raise 90 degrees from L8. Then, the first side wall reinforcement parts 15F, 15R are bent along with the partition wall parts 16F, 16R and the second side wall reinforcement part 21 from the third bending line L3 and the auxiliary bending line L10 (see FIG. 3). As a result, a positioning protrusion 24 is formed on the top surface portion 22. Then, the partition walls 16F, 16R and the second side wall reinforcement part 21 are bent 90 degrees from the fourth bending line L4 and the reinforcing bending line L9 with respect to the second side wall reinforcement part 21, and the joints are bent with respect to the first side wall part 12. The substitute portion 19 is bent 90 degrees from the joint substitute bending line L7.

Next, the first side wall portion 12 is bent 90 degrees from the first bending line L1, and the locking protrusions 20F and 20R protruding from the first side wall reinforcement portions 15F and 15R are inserted into the locking holes 11f and 20R formed in the bottom wall portion 11, respectively. Insert each into 11r. At the same time, the slots 16s formed in the partition walls 16F, 16R are engaged with the slots 14s formed in the receiving wall 14, and the partition walls 16F, 16R are connected to the receiving wall 14 in a cross state. (See Figure 4). As a result, the pair of first side walls 12 are held in an upright state, so that the tray T containing the strawberries M can be efficiently placed on the bottom wall 11 before bending the second side walls 13F, 13R and the reinforcing bar 18. They can be stacked flat (see Figure 5).

Thereafter, the second side wall parts 13F and 13R are bent 90 degrees from the second bending line L2 together with the reinforcing beam part 18 and the insertion tab 23 (see FIG. 5). Then, the crosspiece receiving portions 17F and 17R at the other end of the first side wall portion 12 are rotated at 90 degrees from the third bending line L3 and the insertion slot slit S3 carved to define the insertion slots 17f and 17r. It is bent to form insertion slots 17f and 17r. Then, after bending the insertion tab 23 by 90 degrees from the sixth bending line L6, bending the reinforcing crosspiece 18 by 90 degrees from the fifth bending line L5, and inserting the insertion tab 23 into the insertion slots 17f and 17r, respectively, the tray T is The assembly of the housed box 10 is completed (see FIG. 6).

However, the procedure for assembling the box 10 is merely an example, and it goes without saying that it can be changed as appropriate depending on the work style.

In the embodiment described above, the box 10 that accommodates four trays T has been described, but in the present invention, it is also possible to provide a box that can accommodate six or more trays T.

Therefore, an embodiment in which the present invention is applied to a box that can accommodate six trays T will be described below with reference to FIGS. , and omit the explanation of the overlapping elements. That is, in this embodiment, the two receiving walls 14F and 14R are arranged apart from each other along the first bending line L1. The distance from one second side wall part 13F to the slot 16s of one partition wall part 16F located closer to this one second side wall part 13F, and the distance from the other second side wall part 13R to this other second side wall part 13F. The distance to the slot 16s of the other partition wall 16R located closer to the second side wall 13R is set equal to the distance of the slot 16s of the two partition walls 16F and 16R. Further, the partition wall portion 16F connected to one end of one of the first side wall reinforcement portions 15F is connected to the other receiving wall portion 14R, and the partition wall portion 16R connected to one end of the other first side wall reinforcement portion 15R is connected to one end of the first side wall reinforcement portion 15F. It is connected to the receiving wall portion 14F, thereby allowing six trays T to be stacked flat. In addition, in this embodiment, ventilation holes 12v and 15v are formed in the first side wall part 12 and the first side wall reinforcement parts 15F and 15R, so that deterioration in the freshness of the strawberries M accommodated in the tray T can be prevented.

When assembling the box 10 according to the present embodiment from the blank sheet 10B shown in FIG. Launch. Further, the first side wall reinforcement parts 15F, 15R are bent along with the partition wall parts 16F, 16R and the second side wall reinforcement part 21 from the third bending line L3 and the auxiliary bending line L10 (see FIG. 10). Then, the partition walls 16F, 16R and the second side wall reinforcement part 21 are bent 90 degrees from the fourth bending line L4 and the reinforcing bending line L9 with respect to the second side wall reinforcement part 21, and the joints are bent with respect to the first side wall part 12. The substitute portion 19 is bent 90 degrees from the joint substitute bending line L7.

Next, the first side wall portion 12 is bent 90 degrees from the first bending line L1, and the locking protrusions 20F and 20R protruding from the first side wall reinforcement portions 15F and 15R are inserted into the locking holes 11f and 20R formed in the bottom wall portion 11, respectively. Insert each into 11r. At the same time, the slots 16s formed in the partition walls 16F, 16R are engaged with the slots 14s formed in the receiving walls 14F, 14R, and the partition walls 16F, 16R are crossed with respect to the receiving walls 14F, 14R. (See Figure 11). As a result, the pair of first side walls 12 are held in an upright state, so that the strawberries M can be accommodated before bending the second side walls 13F, 13R and the reinforcing bar 18 that partially closes the opening of the box 10. The trays T can be easily and quickly stacked flat on the bottom wall 11 (see FIG. 12).

Thereafter, the second side wall portions 13F and 13R are bent 90 degrees from the second bending line L2 together with the reinforcing beam portion 18 and the insertion tab 23 (see FIG. 12). Then, the crosspiece receiving parts 17F and 17R at the other end of the first side wall part 12 are bent 90 degrees from the third bending line L3 and the slit S3 defining the insertion slots 17f and 17r to form the insertion slots 17f and 17r. do. Then, after bending the insertion tab 23 by 90 degrees from the sixth bending line L6, bending the reinforcing crosspiece 18 by 90 degrees from the fifth bending line L5, and inserting the insertion tab 23 into the insertion slots 17f and 17r, respectively, the tray T is The assembly of the housed box 10 is completed (see FIG. 13).

In the embodiment described above, the partition wall parts 16F, 16R and the second side wall reinforcement part 21 are connected to both ends of the first side wall reinforcement parts 15F, 15R along the first bending line L1. It is also possible to connect the partition walls 16F and 16R instead. The external appearance of another embodiment of the box according to the present invention is shown in FIG. 14, and the external appearance of its blank sheet 10B is shown in FIG. I will limit myself to this and omit duplicate explanations. That is, in this embodiment, except for the receiving walls 14F and 14R of the bottom wall 11, the blank sheet 10B is axially symmetrical with respect to a bisector of the pair of first folding lines L1 that is parallel to the second folding line L2. It has a shape. That is, the partition wall parts 16F and 16R extend from both ends of the pair of first side wall reinforcement parts 15, respectively, and are connected to the two receiving wall parts 14F and 14R, respectively, in an overlapping state. Furthermore, since the top surface part 22 as in the previous embodiment is omitted and the first side wall reinforcement part 15 is directly connected to the upper end of the first side wall part 12, it is better than the previous embodiment shown in FIGS. 8 to 13. Also, the yield of blank sheets 10B can be further improved.

Note that the present invention should be interpreted only from the matters described in the claims, and even in the above-described embodiments, any changes or modifications included in the concept of the present invention are not limited to matters other than those described. It is possible. In other words, all matters in the embodiments described above are not intended to limit the present invention, and may be arbitrarily changed depending on the use or purpose thereof, including configurations not directly related to the present invention. It is something.

10 Box 10B Blank sheet 11 Bottom wall 12 First side wall 13F, 13R Second side wall 14, 14F, 14R Reception wall 14s Slot 15, 15F, 15R First side wall reinforcement 16F, 16R Partition wall 16s Slot L1 1st fold line (1st edge)
L2 Second bending line (second edge)
L3 3rd bending line (3rd edge)
L4 4th bending line (4th edge)
L5 5th bending line (5th edge)
L6 6th bending line (6th edge)
L8 Center bending line M Strawberry T Tray S2 Slit for receiving wall

Claims (10)

a rectangular bottom wall partitioned by a pair of mutually parallel first edges and a pair of mutually parallel second edges perpendicular to the first edges;
a pair of first side walls rising from the pair of first edges at right angles to the bottom wall;
a pair of second side walls rising from the pair of second edges at right angles to the bottom wall;
a receiving wall portion protruding from the bottom wall portion in parallel with the pair of first side wall portions at an intermediate position in the opposing direction of the pair of first side wall portions, and having a slot formed from an upper end toward the bottom wall portion;
a pair of first side wall reinforcing portions each connected to the upper ends of the pair of first side wall portions via a third edge parallel to the first edge and disposed inside the pair of first side wall portions;
Connected to at least one end of the pair of first side wall reinforcing portions along the first edge in parallel with the pair of second side wall portions via a fourth edge perpendicular to the first edge and the second edge. and a plurality of partition walls formed with slots that engage with the slots formed in the receiving wall and are connected to the receiving wall in a crosswise state ,
two pairs of crosspiece receivers each connected to both ends of the pair of first side walls along the first edge in parallel with the bottom wall via the third edge;
an insertion slot formed along the third edge and including a portion of the third edge;
The upper ends of the pair of second side walls are connected in parallel to the bottom wall part through fifth edges parallel to the second edges, and both ends along the second edges are connected to the pair of crosspiece receiving parts. a pair of reinforcing bars overlapped with at least a portion of the
Two pairs of insertion tabs are connected to both ends of the pair of reinforcing crosspieces in parallel with the first side wall through sixth edges parallel to the first edge, respectively, and inserted into the insertion slots.
A box further comprising : Only one receiving wall portion is formed, and the slot formed in this receiving wall portion is located at an intermediate position in the opposing direction of the pair of second side wall portions, and the two partition wall portions are overlapped with each other. 2. The box according to claim 1, wherein the box is connected to the receiving wall. The two receiving walls are spaced apart along the first edge, from one of the second side walls to a slot of one of the partition walls located closer to the one of the second side walls. , a distance from the other second side wall to a slot of the other partition wall located closer to the other second side wall, and a distance between the slots of the two partition walls. Box according to claim 1, characterized in that they are equal. The pair of first side wall reinforcement portions are each connected to the partition wall portions at both ends thereof along the first edge, and these partition wall portions are respectively connected to the two receiving wall portions. 4. The box according to claim 3. One of the first side wall reinforcing portions is biased toward one of the second side wall portions, and the other first side wall reinforcing portion is biased toward the other of the second side wall portions, The one end of the first side wall reinforcing part is located on the other second side wall part side, the one end of the other first side wall reinforcing part is located on the one second side wall part side, and the one end of the other first side wall reinforcing part is located on the one second side wall part side, and The partition wall portion connected to the one end of the side wall reinforcing portion is connected to the other receiving wall portion, and the partition wall portion connected to the one end of the other first side wall reinforcing portion is connected to the one receiving wall portion. 4. The box according to claim 3, characterized in that: A blank sheet for a box,
a rectangular bottom wall portion partitioned by a pair of mutually parallel first bending lines and a pair of mutually parallel second bending lines orthogonal to the first bending lines;
a pair of first side wall portions each extending from the bottom wall portion via the pair of first bending lines;
a pair of second side walls extending from the bottom wall via the pair of second bending lines;
a pair of first side wall reinforcing portions each extending from the pair of first side wall portions via a third bending line parallel to the first bending line on the opposite side of the bottom wall portion with the first sidewall portion in between; and,
a plurality of partition walls each extending from at least one end of the pair of first side wall reinforcements along the third bending line via a fourth bending line parallel to the second bending line;
slots each formed from an edge of the plurality of partition walls opposite to the third bending line toward the third bending line;
a center bending line formed on the bottom wall portion in parallel to the pair of first bending lines at an intermediate position in the opposing direction of the pair of first bending lines;
a slit carved in the bottom wall so as to connect to both ends of the central bending line and defining the contour of the receiving wall;
a slot portion that defines a part of the slit and is engaged during assembly ;
two pairs of crosspiece receiving portions each extending from the pair of first side wall portions via the third bending line;
an insertion slot formed along the third fold line and including a portion of the third fold line;
a pair of reinforcing beams each extending to the pair of second side wall portions via a fifth bending line parallel to the second bending line;
Two pairs of insertion tabs extend from both ends of these reinforcing beams through sixth bending lines parallel to the first bending line, and are inserted into the insertion slots during assembly.
A box blank sheet further comprising : 7. The slot portion is located on an extension of the fourth bend line and is equidistant from the pair of second bend lines, wherein only one central bend line is formed. blank sheet in the box. The two central folding lines and the slits are spaced apart from each other along the first folding line, and one of the slits is located closer to one of the second folding lines. the distance to the slot portion, the distance from the other second bending line to the slot portion of the other slit located closer to the other second bending line, and the slot portions of the two slits. 7. The box blank sheet according to claim 6 , wherein the distances are set equal to each other. In the first side wall reinforcing section, the pair of partition walls each connected to the two receiving walls extend from both ends of the first side wall reinforcing section along the third bending line via the fourth bending line. The box blank sheet according to claim 8 , characterized in that: One of the first side wall reinforcing portions is biased toward one of the second side wall portions, and the other first side wall reinforcing portion is biased toward the other of the second side wall portions, The fourth bending line of the first sidewall reinforcing portion is located on the other second sidewall side, and the fourth bending line of the other first sidewall reinforcing portion is located on the one second sidewall side. 9. The box blank sheet according to claim 8 .

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