JP3185226U - Cardboard box sheet and cardboard box - Google Patents

Abstract

A sheet for a corrugated cardboard box is provided that can maintain the standing state of a front plate, a rear plate, and a side plate and is easy to assemble.
A rectangular bottom plate, a front plate and a rear plate extending from a front edge and a rear edge of the bottom plate and facing each other in an assembled state, and extending from both side edges of the bottom plate are assembled. And a pair of side plates 6 facing each other and a rear edge of the rear plate. A top plate 7 that opposes the bottom plate in a packaged state, a pair of sticking pieces 8 that extend from both side edges of the top plate and are attached to the back surface of the top plate, and the rear plate standing up during assembly Accordingly, the pair of side plates are extended from the pair of connecting portions 9 that connect the pair of sticking pieces and the pair of side plates, and the front edges of the pair of side plates. A tongue piece that contacts the back surface of the front plate in the assembled state and an inner portion that extends from the front edge of the front plate and is locked between the pair of side plates so as to restrict movement of the tongue piece in the assembled state. And a folded piece 13.
[Selection] Figure 1

Description

  The present invention relates to a cardboard box sheet and a cardboard box.

  A corrugated cardboard box made of a piece of corrugated paper and formed into a box shape by folding four side walls (front plate, rear plate and a pair of side plates) connected to each side of a rectangular bottom plate is used. Among them, cardboard boxes used for packing for parcels and parcel delivery are provided in the form of flat sheets (including those folded flat) so that they do not take up space, and each user assembles them into a box shape. use. It is desirable that such a corrugated cardboard box for packing can be held in a state where the side walls are upright without using an adhesive or an adhesive tape. In addition, in mail order dealers that ship a large number of various products, the ease of assembling such an assembly type cardboard box has a considerable impact on business efficiency.

  As an assembly-type cardboard box, an inner folded piece that is folded back to the inside of the side wall is provided at the upper edge of the pair of opposing first side walls, and the first side wall and the inner folding are provided at the side edges of the pair of adjacent second side walls. There are extension pieces of tongue pieces that are sandwiched and locked between the pieces. In such a cardboard box, with the pair of second side walls folded, the first side wall is folded and then the inner folded piece is folded back to finally fold the pair of second side walls. It will be possible to hold it upright. Therefore, such a cardboard box is complicated to assemble.

  There is also a cardboard box in which the side end of the first side wall and the side end of the second side wall adjacent to each other are connected by two connection pieces having a substantially right isosceles triangle shape. However, even with such a configuration, it is necessary to hold the two second side walls in a folded state until the connection piece is locked to the first side wall, and assembly is not easy. .

  In a decorative box or the like made of cardboard without a core, the tongue of the second side wall is pasted on the first side wall in advance, and an angle of 45 degrees from the corner of the bottom plate is attached to the end of the first or second side wall. In some cases, a fold line is formed that is stretched at, and is provided to the user in a folded state in a flat state. However, it is not preferable to form an extra folding line for folding on a cardboard box for transportation because the box body is easily crushed during transportation.

  Patent Document 1 (Registered Utility Model No. 3172265) discloses a corrugated cardboard box that is easy to assemble, and is attached to the side edge of a flap that extends to the upper edge of the first side wall and seals the upper part of the cardboard box. Extending the affixing part to be attached to the back surface of the flap, connecting the side edge of the second side wall and the affixing part at the folding part, and connecting the second side wall and the affixing part on the bottom plate and the flap, respectively. A configuration is disclosed in which the second side wall is raised through the folding part when the first side wall is folded together with the flap.

  However, in the configuration of the registered utility model No. 3172265, if the first side wall is not held upright, the waist of the corrugated cardboard at the fold line between the bottom plate and the first side wall (restoring force) In addition, there is a problem in that the corrugated cardboard box is crushed due to the folding of the folding line between the bottom plate and the second side wall. Registered Utility Model No. 3172265 also describes that a protrusion that interferes with the first side wall is provided at the folded portion to prevent the side wall from falling down. In addition to the fact that the projection cannot interfere with the first side wall during assembly, the assembling work of the cardboard box becomes difficult.

Registered Utility Model No. 3172265

  The present invention has been made in view of these disadvantages, and it is an object of the present invention to provide a corrugated cardboard box sheet and a corrugated cardboard box that can maintain the standing state of the front plate, the rear plate, and the side plate and are easily assembled. And

The idea made to solve the above problems is
A sheet of corrugated cardboard made of a piece of corrugated paper, which can be assembled into a box shape and packed with contents,
A square bottom plate,
A front plate and a rear plate extending from the front and rear edges of the bottom plate and facing each other in an assembled state;
A pair of side plates extending from both side edges of the bottom plate and facing each other in an assembled state;
A top plate extending from the rear edge of the rear plate and facing the bottom plate in a packed state,
A pair of sticking pieces that extend from both side edges of the top board and are attached to the back surface of the top board,
A pair of connecting portions for connecting the pair of sticking pieces and the pair of side plates so that the pair of side plates rises with the standing of the rear plate during assembly; and
A tongue piece extending from the front edges of the pair of side plates and contacting the back surface of the front plate in an assembled state;
A cardboard box sheet, comprising: an inner folding piece extending from a front edge of the front plate and locked between the pair of side plates so as to restrict movement of the tongue piece in an assembled state. .

  According to the cardboard box sheet, if the side plate and the adhesive piece are folded back and the adhesive piece is attached to the back surface of the top plate, the back plate and the top plate are connected to the top plate via the connection portion. The side plate and the side plate get up and fall together. In a state where the left and right side plates are raised, the tongue piece is bent inward, and the inner folded piece is folded between the side plates and locked, thereby restricting the movement of the tongue piece. Thereby, it is possible to prevent the side plate to which the tongue pieces are connected, and consequently the rear plate, from falling down. Thus, the sheet for corrugated cardboard boxes can maintain the standing state of the front plate, the rear plate, and both side plates, and can be easily and reliably assembled into a box shape.

  In the cardboard box sheet, the maximum width of the inner folded piece is preferably equal to or greater than the distance between the pair of side plates in the assembled state. Then, since the inner folded piece is strongly sandwiched between the side plates, the inner folded piece can be held by the large frictional force generated thereby, and the corrugated cardboard box sheet can be held in the assembled state.

The cardboard box sheet is extended from both side edges of the inner folded piece, and is extended from a pair of folded pieces that are in contact with the back surface of the inner folded piece in an assembled state, and from the side edges of the pair of tongue pieces, It is preferable to further include a pair of connecting pieces connected to the pair of folded pieces so as to contact the surface of the folded piece in an assembled state. Then, the front plate and the inner folded piece, and the side plate connected to the inner folded piece by the folded piece, the connecting piece, and the tongue piece rise and fall at the same time with respect to the bottom plate. And both side plates can be raised at the same time. In the state where the inner folded piece is bent, the connecting piece and the folded piece bring the tongue piece into close contact with the front plate, so that the tongue piece connects the side plate, the side plate and the front plate in an upright state. For this reason, the cardboard box which assembled the said sheet | seat for cardboard boxes has sufficient intensity | strength.

  The cardboard box sheet is folded so that the pair of sticking pieces and the pair of side plates are in contact with the back surfaces of the top plate and the bottom plate, and the pair of sticking pieces are stuck to the top plate. Good. By doing so, the interlocking between the back plate and the two side plates is ensured by ensuring the integrity of the sticking piece to which the connecting portion that conveys the movement of the top plate to the side plate is connected, so that the corrugated cardboard The box is easier to assemble.

  Another idea made to solve the above-described problems is a cardboard box configured by assembling the cardboard box sheet having the above-described configuration.

  Here, the front, the rear, and the side indicate relative directions in the cardboard box sheet, and do not limit the directions in use of the cardboard box sheet and the cardboard box. Further, the front surface refers to a surface disposed outside the corrugated cardboard box in the assembled state in the bottom plate, the front plate, the rear plate, and both side plates of the two surfaces of the corrugated cardboard sheet, and the back surface refers to the opposite surface. Point to. The assembled state refers to a state in which the bottom plate, the front plate, the rear plate, and both side plates stand up so as to form a cylindrical body, and the position of the top plate is not limited. It refers to the state where the upper opening of the body is sealed.

  As described above, the cardboard box sheet of the present invention is supplied to the user in a state of being folded flat, and can be easily assembled by the user.

1 is a perspective view showing a cardboard box according to a first embodiment of the present invention. It is a top view (development view of a cardboard box) of the sheet | seat for cardboard boxes which comprises the cardboard box of FIG. It is a perspective view which shows the state which glued the sheet | seat for cardboard boxes of FIG. It is a perspective view which shows the middle of the assembly for the cardboard boxes of FIG. It is a perspective view which shows the state which assembled the object for cardboard boxes of FIG. It is a top view (development view of a cardboard box) which shows a sheet for cardboard boxes concerning a second embodiment of the present invention. It is a top view (development view of a cardboard box) showing a sheet for cardboard boxes concerning a third embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[First embodiment]
A cardboard box 1 in FIG. 1 is constructed by assembling one cardboard box sheet 2 in FIG. The sheet 2 for corrugated cardboard is made of a piece of corrugated paper, and has a rectangular bottom plate 3 and a front plate 4 extending from the front and rear edges of the bottom plate of the bottom plate 3 and facing each other in the assembled state of FIG. A rear plate 5, a pair of side plates 6 extending from both side edges of the bottom plate 3 and facing each other in an assembled state, and a top plate 7 extending from the rear edge of the rear plate 5 and facing the bottom plate 3 in a packed state Is provided. The corrugated cardboard box sheet 2 is oriented horizontally so that the direction of the center (the direction in which the cross section does not become corrugated but straight) is parallel to the front and rear edges of the bottom plate 3. In the figure, a thin solid line indicates a ruled line that is easily folded by pressing corrugated cardboard.

  Moreover, the sheet | seat 2 for cardboard boxes is extended from the both-sides edge of the top plate 7, and a pair of sticking piece 8 stuck on the back surface of the top plate 7 and a pair of the back plate 5 at the time of assembling are raised. A pair of connecting portions 9 that connect the pair of sticking pieces 8 and the pair of side plates 6 are provided so that the side plate 6 stands. The connecting portion 9 is connected to the rear edges of the both side plates, and is connected to the sticking piece 8 on a straight line that bisects the corners of the rear and side edges of the bottom plate 3. Further, the connecting portion 9 is provided with a ruled line on the extended line of the side edge of the side plate 6, and can be divided into a folding piece 10 connected to the side plate 6 and a connecting piece 11 connected to the sticking piece 8.

  Further, the cardboard box sheet 2 extends from the front edges of the pair of side plates 6 and extends from the front edge of the front plate 4 and the tongue piece 12 that contacts the back surface of the front plate 4 in the assembled state. The inner folded piece 13 locked between the pair of side plates 6 so as to restrict the movement of the tongue piece 12, the pair of folded pieces 14 respectively connected to both side edges of the inner folded piece 13, and the side edges of the side plate 6 And a pair of connecting pieces 15 connected to the folded piece 14 on a straight line that bisects the angle between the front edge and both side edges of the bottom plate 3 respectively. As for both side edges where the folded pieces 14 of the inner folded piece 13 are connected, about half of the front side is inclined toward the folded piece 14 side. For this reason, the front edge of the inner folded piece 13 is slightly longer (for example, 2 mm) than the rear edge of the front plate 4 (the front edge of the front plate). That is, the maximum width of the inner folded piece 13 is not less than the distance between the pair of side plates 6 in the assembled state.

  In addition, the cardboard box sheet 2 includes an insertion piece 16 extending from the center of the rear edge of the top plate 7 and a pair of flange plates 17 respectively connected to the side edges of the side plate 6. In addition, the cardboard box sheet 2 is provided with ruled lines or cuts (including known vertical U-shaped members capable of maintaining the folded state) at the boundaries between the above-described parts. Further, a notch 18 that forms a slit into which the insertion piece 16 can be inserted by bending the inner folding piece 13 with respect to the front plate 4 at the rear edge portion (boundary portion with the front plate 4) of the inner folding piece 13. Is provided.

  In the cardboard box sheet 2, glue is applied to each of the pasting portions 19 of the sticking piece 8, and as shown in FIG. 3, both sticking pieces are on the top plate 7, the side plate 6 is on the bottom plate 3, and both folding pieces 14 Are attached to the inner folding piece 13 so that both the sticking pieces 8 are adhered to the back surface of the top plate 7 and provided to the user.

  Next, a procedure for assembling the cardboard box sheet 2 into the state of the cardboard box 1 will be described. As shown in FIG. 4, when the rear plate 5 of the cardboard box sheet 2 is folded with respect to the bottom plate 3, the connecting portion 9 that is moved through the top plate 7 and the sticking piece is the rear edge of the side plate 6. Get up. Similarly, when the front plate 4 is folded with respect to the bottom plate 3, the connecting piece 15 and the tongue piece 12 moved through the inner folded piece 13 and the folded piece 14 raise the front edge of the side plate 6.

  When the front plate 4 and the rear plate 5 are erected, the two side plates 6 are also erected. Furthermore, as shown in FIG. 5, the inner folded piece 13 is bent inward and disposed between the pair of side plates 6. In the state where the front plate 4 is upright, the tongue piece 12 is in close contact with the back surface of the front plate 4, the folded piece 14 is in close contact with the back surface of the inner folded piece 13, and the surface of the folded piece 14 (inward in the cardboard box 1). The connecting piece 15 is further in close contact with the (arranged surface). Therefore, the connecting piece 15 is also bent with respect to the tongue piece 12 by bending the inner folded piece 13 inward. When the folded piece 14 and the connecting piece 15 are bent with respect to the front plate 4 and the tongue piece 12, the tongue piece 12 is held in close contact with the front plate 4.

  When the inner folded piece 13 is folded between the two side plates 6, the width of the front edge of the inner folded piece 13 is slightly larger than the distance between the back surfaces of the paired side plates 6. A relatively large frictional force is generated between the edge and the side plate 6. This frictional force locks the inner folded piece 13 and prevents the inner folded piece 13 from rising by its waist. At this time, since the direction of the center of the corrugated cardboard box sheet 2 coincides with the leading edge of the inner folded piece 13, the compressive strength of the front edge of the inner folded piece 13 is high and a high frictional force is exhibited.

  Furthermore, as shown in FIG. 1, by bending both the flange plates 17 inward, the rising of the inner folded piece 13 can be more reliably prevented by the flange plate 17. Further, once the flange plate 17 is bent inward, a fold line that engages both side edges of the inner folded piece 13 is formed at the upper end edge of the side plate 6, so that even if the flange plate 17 is raised again, the inner folded piece 13 does not stand up easily. Further, the side edge of the inner folded piece 13 may be engaged with a notch formed at the boundary between the flange plate 17 and the side plate 6.

  In the assembled state, the side edge of the front plate 4 and the front edge of the side plate 6 are connected via the folded piece 14, the connecting piece 15, and the tongue piece 12. That is, the frictional force that holds the inner folded piece 13 between the folded piece 14 and the connecting piece 15 and the side plate 6 is necessary to hold the corrugated cardboard box sheet 2 in an assembled state. The strength of the corrugated cardboard box 1 is not necessary.

  In this way, the corrugated cardboard box sheet 2 holds the inner folded piece 13 between the side plates 6 and locks the front plate 4 in an upright state, whereby the inner folded piece 13, the folded piece 14, the connecting piece 15, The side plate 6 interlocked with the front plate 4 is held in an upright state via the tongue piece 12, and the rear plate 5 is held in an upright state via the folding piece 10, the connecting piece 11, the sticking piece 8 and the top plate 7. it can. Accordingly, since the user can release both hands from the cardboard box 1 in this state, the contents can be easily put into the cardboard box 1.

  Thereafter, the top plate 7 is bent, and the insertion plate 16 is inserted into the slit formed by the cuts 18, whereby the cardboard box 1 can be sealed and the contents can be packed.

  As described above, the corrugated cardboard box 1 can easily stand the front plate 4, the rear plate 5, and the side plate 6, and can lock the inner folding piece 13 between the pair of side plates 6. The side plate 6 can be held in an upright state by being locked in close contact with the front plate. As a result, the connecting portion 9 (folded piece 10 and connecting piece 11) connected to the side plate 6, the sticking piece 8 and the top plate 7 can be used. The rear plate 5 can be held upright. Therefore, the corrugated cardboard box 1 is easy to assemble and has excellent workability.

[Second Embodiment]
6 includes a bottom plate 3, a front plate 4, a rear plate 5, a side plate 6, a top plate 7, a pair of sticking pieces 8, a pair of connecting portions 9 (folding piece 10 and connecting piece 11), A pair of tongue pieces 12, an inner folded piece 13a, a pair of folded pieces 14a, a pair of connecting pieces 15, and a flap 16a extending from the rear edge of the top plate 7 over the entire length are provided. In addition, in the sheet | seat 2a for cardboard boxes of this embodiment, the same code | symbol is attached | subjected to the same component as the sheet | seat 2 for cardboard boxes of FIG. 2, and the overlapping description is abbreviate | omitted.

  The inner folded piece 13a of the cardboard box sheet 2a is longer than the inner folded piece 13 of FIG. Correspondingly, in the cardboard box sheet 2a, the length of the folded piece 14a is also increased. In addition, the rear edge of the inner folded piece 13a is provided with an easy-bending line (in which ruled lines and cuts are alternately arranged) extending in parallel at intervals of about 10 mm. The inner folded piece 13a is folded about 180 degrees so that the tongue piece 12, the folded piece 14a and the connecting piece 15 are sandwiched between the inner folded piece 13a and the front plate 4 by being folded along two easy folding lines. The flap 16a extends to the outside of the front plate 4 and seals the cardboard box in which the cardboard box sheet 2a is assembled.

[Third embodiment]
7 includes a bottom plate 3b, a front plate 4, a rear plate 5, a side plate 6, a top plate 7, a pair of sticking pieces 8, a pair of connecting portions 9 (folding piece 10 and connecting piece 11), A pair of tongue pieces 12b, an inner folded piece 13b, and a flap 16a are provided. In the cardboard box sheet 2a of the present embodiment, the same components as those in the cardboard box sheet 2 of FIG. 2 or the cardboard box sheet 2a of FIG.

  In the cardboard box sheet 2b, the tongue piece 12b is formed in a substantially rectangular shape. Further, the inner folded piece 13b of the cardboard box sheet 2b has substantially the same size as the front plate 4, and is provided with a protrusion 20 on the front edge. The bottom plate 3b of the cardboard box sheet 2b is formed with an engagement hole 21 corresponding to the protrusion 20 of the inner folded piece 13b in the vicinity of the front edge. In the cardboard box sheet 2b, the tongue piece 12b and the inner folded piece 13b are not connected.

  The corrugated cardboard box sheet 2b is formed by folding the back plate 5 to raise the side plate 6 and supporting the side plate 6 from falling down by folding the tongue 12b inward. The front plate 4 and the side plate 6 are connected in an upright state by turning 13b back and sandwiching the tongue 12b and inserting the protrusion 20 into the engagement hole 21.

[Other Embodiments]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is not limited to the configuration of the above-described embodiment, but is defined by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims. The

  For example, in the corrugated cardboard box sheet, the tongue piece and the front plate may be connected by a substantially triangular connecting piece connected to both side edges of the front plate instead of the folded piece and the connecting piece.

  The corrugated cardboard box in which the corrugated cardboard sheet is assembled is particularly preferably used for product packaging such as home delivery.

DESCRIPTION OF SYMBOLS 1 Cardboard box 2, 2a, 2b Cardboard box sheet | seat 3, 3a Bottom plate 4 Rear plate 5 Front plate 6 Side plate 7 Top plate 8 Adhering piece 9 Connection part 10 Folding piece 11 Connection piece 12, 12b Tongue piece 13, 13a, 13b Inner folding piece 14 Folding piece 15 Connecting piece 16 Inserting piece 16a Flap 17 Flange plate 18 Notch 19 Gluing part 20 Protruding part 21 Engagement hole

Claims (5)

A sheet of corrugated cardboard made of a piece of corrugated paper, which can be assembled into a box shape and packed with contents,
A square bottom plate,
A front plate and a rear plate extending from the front and rear edges of the bottom plate and facing each other in an assembled state;
A pair of side plates extending from both side edges of the bottom plate and facing each other in an assembled state;
A top plate extending from the rear edge of the rear plate and facing the bottom plate in a packed state,
A pair of sticking pieces that extend from both side edges of the top board and are attached to the back surface of the top board,
A pair of connecting portions for connecting the pair of sticking pieces and the pair of side plates so that the pair of side plates rises with the standing of the rear plate during assembly; and
A tongue piece extending from the front edges of the pair of side plates and contacting the back surface of the front plate in an assembled state;
A cardboard box sheet, comprising: an inner folding piece extending from a front edge of the front plate and locked between the pair of side plates so as to restrict movement of the tongue piece in an assembled state.   The cardboard box sheet according to claim 1, wherein a maximum width of the inner folded piece is equal to or greater than a distance between the pair of side plates in an assembled state. A pair of folded pieces extending from both side edges of the inner folded piece and contacting the back surface of the inner folded piece in an assembled state;
A pair of connecting pieces that extend from the side edges of the pair of tongue pieces and are connected to the pair of folded pieces so as to contact the surface of the folded pieces in an assembled state. The sheet | seat for cardboard boxes of description.   The pair of sticking pieces and the pair of side plates are folded back so as to come into contact with the back surfaces of the top plate and the bottom plate, and the pair of sticking pieces are stuck to the top plate. Or the sheet | seat for cardboard boxes of Claim 3.   A cardboard box formed by assembling the sheet for a cardboard box according to any one of claims 1 to 4.

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