JP6497078B2 - Assembly box and blank sheet and primary assembly sheet - Google Patents

Description

  The present invention relates to an assembly box, and more particularly to a simple assembly box that can be easily assembled as a shipping tray for fruits and vegetables.

  Conventionally, an assembly box in which cardboard boxes are assembled is widely used as a fruit and vegetable shipping tray. Shipping trays are used in the form of farmers and other fruit and vegetables producers (hereinafter referred to as “producers”) assembling the shipping trays at home and work place, packing the fruits and vegetables and transporting them to the shipping association. Yes. When harvesting fruits and vegetables, a lot of shipping trays are used at a time, so it is preferable to assemble them as easily as possible.

  Conventionally, as shown in Patent Document 1, for example, the assembly box is produced in the form of a primary assembly in which the left and right side plates are folded inward from the state of the cardboard unfolded sheet, and then the overlapping portions with the front and rear side plates are bonded and fixed. (Refer to Patent Document 1 FIG. 3A). Then, the producer folds the front and rear side plates of the primary assembly and assembles them into a box shape.

  Moreover, as shown in FIG.6 and FIG.7 of patent document 1, in order to increase the intensity | strength of an assembly box, there exist some which provided the right-and-left top plate. After the left and right and front and rear side plates are raised and assembled into a box shape, the locking pieces of the left and right top plates are inserted into the notches in the upper edge of the opening of the box.

JP 2008-1000070 A

  By the way, the assembly box shown in FIG. 3 of Patent Document 1 can be formed by so-called one-touch when the producer can fold the front and rear side plates from the primary assembly when packing fruits and vegetables. However, when the front and rear side plates are bent and started up, the corner connecting plate is bent at a 45-degree valley fold line, and it is necessary to apply a little force to start up the front and rear side plates under this bending load. It was understood by the consideration of the people. In particular, the aging of producers is progressing recently, and it is desirable that the load during assembly be less.

  In addition, as shown in Patent Document 1, in order to increase the strength of the box, there is a thing in which a top plate is provided at the opening side end of the box, but an operation of inserting a locking piece of the top plate occurs, and the box assembly work This is not desirable because it increases the amount of work.

  In view of such a problem, an object of the present invention is to provide an assembly box that can be easily formed with less force and effort.

  The assembly box of the present invention includes a rectangular bottom plate, front and rear side plates and left and right side plates extending from four sides of the bottom plate, and a corner connecting plate connected to the side sides of the front and rear side plates and the side sides of the left and right side plates. The corner connecting plate includes a valley fold line that extends linearly in a direction away from an intersection of the bottom plate, the front and rear side plates, and the left and right side plates, and is cut off at an intermediate portion, and is bonded to the left and right side plates. An adhesive region and a non-adhesive region that folds over the adhesive region via the valley fold line, the adhesive region from the valley fold line side to the upper side of the left and right side plates in a direction intersecting the valley fold line It consists of the 1st adhesion field extended and the 2nd adhesion field extended in the direction opposite to the 1st adhesion field from the middle part.

  Further, the blank sheet of the present invention is a blank sheet for an assembly box, and includes a rectangular bottom plate, front and rear side plates and left and right side plates integrally formed via folds on four sides of the bottom plate, and the adjacent front and rear side plates. A corner connecting plate that connects the left and right side plates, and the corner connecting plate extends linearly in a direction away from the intersection of the bottom plate, the front and rear side plates, and the left and right side plates, and is a valley fold line that is interrupted at an intermediate portion. And a notch projecting toward the front and rear side plates in a direction crossing the valley fold line from one valley fold line end in the intermediate portion to the other valley fold line end.

  Further, the primary assembly sheet of the present invention is surrounded by the valley fold line and the notch from the connection side of the corner connecting plate with the left and right side plates in a state where the front and rear side plates of the blank sheet are folded and overlapped with the bottom plate. The region to be bonded is bonded to the left and right side plates.

  By using the assembly box of the present invention, the force and work process required for box assembly can be reduced, and even a weak person such as a child or an elderly person can easily assemble the box.

It is a top view which shows the expansion | deployment sheet | seat of the assembly box which is embodiment of this invention. It is folding explanatory drawing which shows the primary assembly stage of the box of embodiment. (A) is explanatory drawing which shows the middle of the assembly of the box of embodiment, (b) is the expanded partial view which expanded the corner part of the box in the middle of an assembly. It is a perspective view which shows the assembly completion state of the box of this embodiment. It is a disassembled perspective view which shows the state which stacks two boxes of this embodiment. It is a fragmentary sectional view in the VI-VI line of FIG.

  An assembly box which is an embodiment of the present invention will be described.

  The assembly box of this embodiment is used as a fruit and vegetables tray that stores vegetables such as tomatoes and fruits such as fruits such as peaches.

  FIG. 1 is a top view showing a developed sheet of the assembly box of the present embodiment.

  A development sheet (hereinafter also referred to as “blank sheet”) 10 of the assembly box is formed by cutting a corrugated base paper. In the following, each part of the blank sheet 10 will be described with “up and down” in FIG. 1 as “front and back” and “left and right” as left and right, but the assembly box of the present invention is not limited to use in this direction, but in various orientations. It goes without saying that use is made.

  Front and rear side plates 12a and 12b extend from the front and rear sides of the rectangular bottom plate 11, and left and right side plates 12c and 12d extend from the left and right sides. A crease line is formed on the four sides of the bottom plate 11, and each side plate 12 is formed integrally with the bottom plate 11 through the ruled line. The bottom plate 11 is not limited to a rectangle but may be a square.

  Then, between the front side plate 12a and the left side plate 12c, a corner connecting plate 13a having a substantially square shape is formed via a ruled line that becomes a crease from each plate. Similarly, corner connecting plates 13a, 13b, 13c, and 13d are formed at four locations between the front and rear side plates 12a and 12b and the left and right side plates 12c and 12d, respectively.

  The corner connecting plate 13a is a straight line starting from the corner of the bottom plate 11 and extending obliquely 45 degrees to the corner of the opposing corner connecting plate 13a (that is, a diagonal line when the outer shape of the corner connecting plate 13a is regarded as a square) ) A valley fold line 14a in which the intermediate portion formed above is interrupted and a notch 15a located in the intermediate portion. A region surrounded by the connection side with the left side plate 12c and the notch 15a and the valley fold line 14a is defined as an adhesive region 16a bonded to the left side plate 12c when the box is assembled. The other corner connecting plates 13b, 13c, and 13d are similarly formed with valley fold lines and notches. Details of the corner connecting plates 13a to 13d will be described later.

  Left and right upper edge plates 17a and 17b extend from the sides of the left and right plates 12c and 12d facing the side connected to the bottom plate 11 via ruled lines that are creases. Further, left and right inner plates 18a and 18b extend from the sides facing the sides connected to the left and right side plates 12c and 12d of the left and right upper edge plates 17a and 17b via crease lines. The left and right inner plates 18a and 18b are approximately the same size as the left and right side plates 12a and 12b. The widths of the left and right upper edge plates 17a and 17b connecting the two become the left and right upper edges at the opening of the completed box (details will be described later), and the length is the same as the left and right side plates 12a and 12b.

  U-shaped stacking cuts 19a and 19b projecting toward the upper edge plates 17a and 17b starting from the sides are formed at the center of the sides of the left and right upper edge plates 17a and 17b on the left and right side plates 12c and 12d side. Yes. In addition, insertion pieces 20a and 20b projecting in a U-shape are formed at the center of the side facing the side connected to the left and right upper edge plates 17a and 17b of the left and right inner plates 18a and 18b.

  In addition, rectangular engagement holes 21a and 21b are formed in the center of the ruled line that is the boundary between the bottom plate 11 and the left and right side plates 12a and 12b. Since the insertion pieces 20a and 20b are inserted into the engagement holes 21a and 21b at the time of assembly, the length is the same as the length of the insertion pieces 20a and 20b. Further, the stacking cuts 19a and 19b, the insertion pieces 20a and 20b, and the engagement holes 21a and 21b are arranged on the central axis in the left-right direction, and the length from each central axis is substantially the same.

  Furthermore, finger hanging cutouts 22a are formed on the same side of the left and right inner plates 18a, 18b as the insertion pieces 20a, 20b. This is for hooking a finger and pulling out the left and right inner plates 18a, 18b when the box is disassembled.

  In addition, reinforcing pieces 23a, 23b, 23c, and 23d extend on sides of the corner connecting plates 13a, 13b, 13c, and 13d that face the sides that are connected to the left and right side plates 12c and 12d. When assembled, the reinforcing pieces 23a to 23d are positioned below the left and right upper edge plates 17a and 17b, and reinforce the upper edge plate portion of the box opening. Details will be described later.

  Further, at the center of the side opposite to the side connected to the bottom plate 11 of the front and rear side plates 12a, 12b, misalignment stop pieces 24a, 24b at the time of stacking are formed.

  Next, a procedure for assembling the box from the blank sheet 10 will be described.

  2 and 3 are diagrams showing an intermediate stage of assembly.

  FIG. 4 is a perspective view showing the assembly box that has been assembled.

  In the form shown in FIG. 1, after the blank sheet 10 is punched from the corrugated base paper, the blank sheet 10 is folded inward so that the front and rear side plates 12 a and 12 b overlap the bottom plate 12. Then, an adhesive is applied to the bonding regions 16a to 16d of the corner connecting plates 13a to 13d, and is bonded and fixed to the left and right side plates 12c and 12d that face each other when folded. In this way, the stage where the overall shape is as shown in FIG. The blank sheet 10 is conveyed to the producer in the form of FIG. 2 where the primary assembly has been completed. Thus, since the blank sheet 10 is conveyed in a state where the front and rear side plates 12a and 12b are folded, the space required for conveyance and storage can be saved.

  Next, when the producer receives the fruits and vegetables, it is assembled as follows from the shape of FIG.

  As shown in FIG. 3, the left and right side plates 12c and 12d are raised, the left and right inner plates 18a and 18b are folded inside the box along the ruled lines, and the insertion pieces 20a and 20b at the tip are inserted into the engagement holes 21a and 21b. Secure with. As a result, the left and right side plates 12c and 12d are fixed in a standing state (see FIG. 4). Further, when the left and right inner plates 18a and 18b are folded, the left and right upper edge plates 17a are folded by a two-step folding operation in which the left and right side plates 12c and 12d are folded along the ruled lines and then folded again along the ruled lines of the left and right upper edge plates 17a and 17b. , 17b form a flat edge at the top opening of the box 1. Details of the edge portion by the left and right upper edge plates 17a and 17b will be described later.

  As described above, since the corner connecting plates 13a to 13d are bonded to the left and right side plates 12c and 12d, when the left and right side plates 12c and 12d are raised, the left and right side plates are pulled and the front and rear side plates are also raised. As shown in FIG. 3 (b), at the stage of bonding the bonding region 16, the valley fold line 14 is ruled in such a direction as to be a valley fold, or the valley fold line is perforated. It is easy to break. Therefore, the adhesion region 16 also rises when the left and right side plates rise. When the portion where the corner connecting plate 13 is not bonded is folded at the valley fold line 14 and rises, the front and rear side plates 12a and 12b connected thereto rise and the side plates 12 rise. Then, the box 1 is completed by folding the left and right inner plates 18a, 18b along the ruled lines inside the box and fixing the insertion pieces 20a, 20b at the tip. As can be seen from this procedure, the user of the box 1 can assemble the box 1 by so-called one-touch.

  Here, as for the corner | angular part connection board 13a of this embodiment, as mentioned above, the valley fold line 14a is isolate | separated into the two valley fold lines which hold the notch 15a in the intermediate part. Since the notch 15 is present, the adhesion region 16a is not only the conventional triangular region (first adhesion region) but also the region (second adhesion region) formed by the notch 15a, that is, as shown in FIG. It becomes wider by the area indicated by the diagonal lines. Therefore, compared with the conventional one, the bonding area is widened, and the corner connecting plate 13a is more firmly fixed to the left and right side plates 12c. On the other hand, since the valley fold line 14a is a line in which an intermediate portion is interrupted by the notch 15a, the length of each line is shortened. Therefore, less force is required for valley folding than a conventional valley folding line starting from the corner of the bottom plate 11 and continuing to the corner of the opposite corner connecting plate 13a. Since the corner connecting plates 13a to 13d are firmly fixed to the left and right side plates 12c and 12d, the front and rear side plates 12a and 12b continuous to the corner connecting plates 13a to 13d are likely to rise. In addition, since the folding force at the valley fold line 14 is small, the box can be formed with less force than before. Therefore, even a child or an elderly person can easily assemble, and the burden when assembling in large quantities is reduced.

  In the present embodiment, the valley fold line 14 is a straight line (diagonal line) extending obliquely 45 degrees from the connection side between the left and right side plates 12c, 12d and the corner connection plate 13, but the present invention is not limited to this inclination angle. However, since the diagonal line has the longest length of 45 degrees, that is, the diagonal line can be secured, the area of the adhesion region (second adhesion region) formed by the notch 15 in the intermediate portion can be secured after securing the valley fold line 14.

  Further, in the present embodiment, the notch 15 is composed of two substantially straight lines extending from the valley fold line 14 at an angle of 45 degrees and intersecting at approximately 90 degrees. Therefore, the portion expanded by the notch 15 has a substantially right-angled isosceles triangle shape. However, the present invention is not limited to this, and may be a semicircle. The start point and end point of the notch are positions obtained by dividing a straight line (diagonal line) into four equal parts. That is, assuming that the length from the corner of the bottom plate 11 to the notch 15 in the valley fold line 14 is L1, and the length of the side on the valley fold line 14 of the right isosceles triangle by the notch 15 is L2, L2 is L1 There is a double relationship. Although this invention is not restricted to this, it is desirable to exist in the range of L1 <L2 <4L1. Further, considering that the force is applied evenly, it is desirable that the start point and the end point of the notch 15 are at equal positions from both ends of the valley fold line 14.

  On the basis of the length L of the straight line (diagonal line), the length L1 of one valley fold line 14 is preferably L / 4 ≦ L1 ≦ L / 3.

  Further, as shown in FIGS. 3A and 3B, when the bend fold line 14a is bent and a region where the corner connecting plate 13a is not bonded rises, the reinforcing pieces 23a to 23d are formed on the corner connecting plate 13a. On the other hand, it bends at right angles and follows the upper ends of the left and right side plates 12c. When the left and right inner plates 18a are folded inside the box, the upper edge plate 17a is positioned on the reinforcing piece 23a.

  As shown in FIG. 5, the box 1 is conveyed in a stacked state after the fruits and vegetables are accommodated therein. The upper edge plate 17 requires strength so that the box 1 is not deformed by a load from above when the assembly boxes 1 are stacked. As shown in FIGS. 3 and 4, the reinforcing piece 23a is overlapped under the upper edge plate 17, so that the thickness of the upper edge plate portion is increased and the strength is increased.

  In addition, as shown in FIG. 1, the width M1 of the upper edge plate 17a is made wider than the width M2 of the engagement hole 21a to ensure a large area of the upper edge plate 17, and the volume inside the box is not as small as possible. I am doing so. That is, as shown in FIG. 6, the left and right inner plates 18a are inclined obliquely from the connection side with the upper edge plate 17a and engage with the engagement holes 21a. Therefore, since the space (especially near the bottom surface) that accommodates the fruits and vegetables of the box is not narrowed, the width M1 of the upper edge plate is wide while securing the volume, so that the strength when the boxes are stacked can be maintained. In addition, as described above, in order to maintain the strength of the box, there is a configuration in which a top plate is further provided on the upper edge of the front and rear side plates separately from the upper edge plate, but since the width M1 of the upper edge plate is wide, The box of the embodiment does not need to be provided with such a top plate. Therefore, as shown in FIG. 4, a wide opening area of the top surface of the box 1 can be secured, and fruits and vegetables can be easily taken in and out.

  3B illustrates the corner connecting plate 13a, it goes without saying that the other corner connecting plates 13b to 13d have the same configuration.

  Returning to FIG. 4 and FIG. 5, those that engage with each other are provided so as not to shift when the boxes 1 are stacked. The stoppers 24a and 24b provided on the upper edges of the front and rear side plates 12a and 12b are arranged along the outside of the front and rear side plates 12a 'and 12b' so as to sandwich the upper box 1 'when the boxes 1 are stacked. Thereby, it is suppressed that box 1 and box 1 'shift. Further, when the upper edge plates 17a and 17b are bent, the stacking cuts 19a and 19b rise along the left and right side plates 12c and 12d and project from the upper edge of the box 1 in the same manner as the misalignment stop pieces 24a24b. The stacking cuts 19a and 19b are in a positional relationship where they are just engaged with the engagement holes 21a'21b 'of the upper box 1' when stacked, and the stacking cuts are inserted into the engagement holes. It is suppressed that the box 1 and the box 1 ′ are shifted.

  As described above, the box 1 of the present embodiment has the notches 15a to 15c on straight lines that start at the corners of the bottom plates 11 of the corner connecting plates 13a to 13d and extend obliquely 45 degrees to the corners of the opposing corner connecting plates. 15d. By the notches 15a to 15d, the adhesion regions 16a to 16d can be ensured wider than before, and the adhesion to the left and right side plates 12c and 12d can be made stronger. This makes it easier for the front and rear side plates 12a and 12b to stand up when the left and right side plates 12c and 12d are raised. In addition, since the valley fold line 14 itself is shortened by being cut off by the notch 15, the force for folding the valley fold line 14 can be reduced. Accordingly, since the box 1 can be assembled without requiring much force, even a weak child or an elderly person can easily assemble the box of the present invention.

  Further, since the width of the upper edge plates 17a and 17b is wide, the strength is increased as compared with the conventional one, and the boxes are not easily deformed by the load from above even when the boxes are stacked.

  Furthermore, since the upper edge plates 17a and 17b are provided with auxiliary pieces 23a to 23d supported from the inside, the strength is further increased and the upper edge plates 17a and 17b are not easily deformed.

  In addition, the left and right inner plates 18a and 18b are inclined and folded so as to go to the left and right side plates 12c and 12d toward the bottom of the box, so that the width of the upper edge plates 17a and 17b is widened, and a large volume is obtained. It can be secured.

1 Assembly box 10 Unfolded sheet of assembly box (blank sheet)
11 Bottom plate 12a, 12b Front / rear side plate 12c, 12d Left right side plate 13a, 13b, 13c, 13d Corner connecting plate 14a, 14b, 14c, 14d Valley folding line 15a, 15b, 15c, 15d Notch 16a, 16b, 16c, 16d Adhesive region 17a, 17b Upper edge plates 18a, 18b Left and right inner plates 19a, 19b Stack cuts 20a, 20b Insert pieces 20a, 20b
21a, 21b Engagement holes 22a, 22b Finger notches 23a, 23b, 23c, 23d Auxiliary pieces 24a, 24b

Claims (9)

A rectangular bottom plate, front and rear side plates and left and right side plates extending from the four sides of the bottom plate,
An assembly box comprising a corner connecting plate connected to a side of the front and rear side plates and a side of the left and right side plates,
The corner connecting plate is a valley fold line that extends linearly in a direction away from the intersection of the bottom plate, the front and rear side plates, and the left and right side plates, and is cut off at an intermediate portion, and is separated into two so as to sandwich the intermediate portion A valley fold line, an adhesion area bonded to the left and right side plates, and a non-adhesion area that is folded over the adhesion area via the valley fold line,
The adhesive region is a first adhesive region extending from the valley fold line side to the top surface side end of the assembly box from the side of the left and right side plates with respect to the direction intersecting the valley fold line, A second adhesive region extending from the intermediate portion in a direction opposite to the first adhesive region;
Left and right upper edge plates facing the bottom plate and extending from the left and right side plates, and left and right inner plates extending from the left and right upper edge plates and overlapping the left and right side plates and positioned inside the box,
An insertion piece provided on a side opposite to the left and right upper edge plates of the left and right inner plates, and an engagement hole provided on a connection side of the bottom plate and the left and right side plates;
The width of the upper edge plate in the extending direction from the left and right side plates is wider than the width of the engagement hole in the same direction,
The left and right inner plates are folded inside the box so as to be inclined toward the left and right side plates toward the bottom of the box ,
L / 4 ≦ L1 ≦ L where L is the length from the intersection point to the intersection point of the valley fold line and the edge of the corner connecting plate and L1 is one of the two separated valley fold lines. / 3 der Rukoto assembly box and it said.   The said 2nd adhesion area | region is delineated by the notch which continues from the edge part of the said intermediate part side among the edge parts of the said valley fold line separated into two. Assembly box. The second adhesive region according to claim 1 or 2, characterized in that projecting at substantially right isosceles triangle from an end portion of the intermediate portion side of the ends of the two to separate the inward fold lines Assembly box. The corner connecting plate includes an auxiliary piece extending from a side facing a side connected to the left and right side plates, and the auxiliary piece is located at a lower portion of the left and right upper edge plates. The assembly box according to any one of 1 to 3 . A blank sheet for an assembly box,
A rectangular bottom plate, front and rear side plates and left and right side plates integrally formed via folds on four sides of the bottom plate, and corner connecting plates that connect the adjacent front and rear side plates and left and right side plates;
The corner connecting plate is a valley fold line that extends linearly in a direction away from the intersection of the bottom plate, the front and rear side plates, and the left and right side plates and is interrupted at an intermediate portion, and is separated into two so as to sandwich the intermediate portion. In addition, the valley fold line is connected to the intermediate part side end of the other valley fold line from the end part on the intermediate part side of one valley fold line of the two separated fold lines, and the valley fold line and Having a notch protruding toward the front and rear side plates in the intersecting direction,
Furthermore, left and right upper edge plates extending from the edge of the left and right side plates opposite to the bottom plate side, and left and right inner plates extending from the edge of the left and right upper edge plates opposite to the left and right side plates. Prepared,
An insertion piece provided on a side opposite to the left and right upper edge plates of the left and right inner plates, and an engagement hole provided on a connection side of the bottom plate and the left and right side plates;
The width of the upper edge plate in the extending direction from the left and right side plates is wider than the width of the engagement hole in the same direction,
When the assembly box blank sheet is assembled in a box shape, the left and right inner plates are configured to be able to be folded inside the box so as to be inclined toward the left and right side plates toward the bottom of the box. ,
L / 4 ≦ L1 ≦ L where L is the length from the intersection point to the intersection point of the valley fold line and the edge of the corner connecting plate and L1 is one of the two separated valley fold lines. / 3 der blank sheet which is characterized in Rukoto. The blank sheet according to claim 5 , wherein the intermediate portion is formed by intermittently arranging the valley fold lines. 7. The blank according to claim 5 , wherein the notch protrudes in a substantially right-angled isosceles triangle shape from an end portion of the intermediate portion side among end portions of the valley fold line separated into two. 8. Sheet. The blank sheet according to any one of claims 5 to 7 , wherein the corner connecting plate includes an auxiliary piece extending from a side opposite to a connecting side with the left and right side plates. The blank sheet according to any one of claims 5 to 8 , wherein the front and rear side plates of the blank sheet are folded and overlapped with the bottom plate, and are surrounded by the valley fold line and the notch from the connecting side of the corner connecting plate with the left and right side plates. A primary assembly sheet in which a region to be bonded is bonded to the left and right side plates.

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