JP2021017258A - Assembling container - Google Patents

Abstract

To provide an assembling container 10 capable of being easily assembled from a tabularly folded state in a single operation and stably maintaining an assembled state.SOLUTION: The assembling container includes a rectangular bottom plate part 1, a pair of side wall parts 2 continuously provided at right and left side edges of the bottom plate part 1 via a first folding line B1, a pair of end wall parts 3 continuously provided at front and rear end edges of the bottom plate part 1 via a second folding line B2, and a connection piece 4 continuously provided at front and rear end edges of the respective side wall parts 2 via a third folding line B3 to be divided into a folding part 41 closer to the side wall part 2 and a folded-back part 42 closer to the end wall part 3 with a diagonal folding line B4 set as a border so as to form 45° relative to the third folding line B3. The folded-back part 42 of the connection piece 4 is folded at the diagonal folding line B4 in a folding state of the assembling container and superposed on the folding part 41, and the end wall parts 3 and the side wall parts 2 are erected while unfolding the folding part 41 and the folded-back part 42 of the connection piece 4 which are superposed on each other in using the assembling container to assemble the container.SELECTED DRAWING: Figure 1

Description

The present invention relates to an assembly container, more specifically, an assembly container that can be stored and transported in a flat state and can be easily assembled at the time of use.

Conventionally, as an assembly container that can be easily assembled from a state of being folded into a flat plate at the time of use, for example, those described in the following Patent Documents 1 and 2 are known. This assembly container includes a rectangular bottom plate portion, a pair of side wall portions connected to the left and right side edges of the bottom plate portion via a fold line, and a pair of side wall portions connected to the front and rear end edges of the bottom plate portion via a fold line. An end wall portion and a connecting piece connected to the bottom plate portion, the side wall portion, and the end wall portion via a fold line are provided, and the connecting piece has a corner portion of the bottom plate portion so as to form 45 ° with respect to the fold line. A diagonal polygonal line is formed from. The connecting piece is divided into two triangular pieces with the diagonal polygonal line as a boundary, and one triangular piece is fixed to the outer surface of the end wall portion by stitching or an adhesive to form an assembly container.

However, in these conventional assembly containers, when the side wall portion and the end wall portion are erected during use, the connecting piece fixed to the outer surface of the end wall portion is folded in half at an oblique fold line (the following). (See Fig. 5 of Patent Document 1), due to the repulsive force of the two-folded connecting piece, the raised end wall portion easily falls inside the container, and there is a problem that the assembled state cannot be maintained stably. ..

Special Publication No. 43-5310 Jitsukaisho 50-323339

The present invention has been made in view of the above-mentioned drawbacks of the conventional assembly container, and can be easily assembled with one touch from the state of being folded into a flat plate, and the assembled state is stable. The challenge is to provide an assembly container that can be maintained.

In the present invention, a rectangular bottom plate portion, a pair of side wall portions connected to the left and right side edges of the bottom plate portion via first folding lines, and front and rear end edges of the bottom plate portion via second folding lines, respectively. The corners of the bottom plate portion are connected to the pair of end wall portions and the front and rear edge edges of the side wall portions via the third folding line, respectively, so as to form 45 ° with respect to the third folding line. A connecting piece divided into a bent portion near the side wall portion and a folded portion near the end wall portion with a diagonal folding line formed from the portion as a boundary is provided, and the folded portion of the connecting piece is the end. An assembly container that is attached to the outer surface of the wall.
In the folded state of the assembly container, the end wall portion is bent inward at the second folding line and overlapped with the bottom plate portion, and the bent portion of the connecting piece is bent inward at the third folding line. It is overlapped with the side wall portion, the folded portion is bent at the diagonal folding line and overlapped with the bent portion, the side wall portion is bent inward at the first folding line, and the end wall portion and the end wall portion and the said portion together with the connecting piece. The folded portion and the end wall portion of the connecting piece are attached to each other in a state of being overlapped with the bottom plate portion, and when the assembly container is used, the bent portion and the folded portion of the connecting piece overlapping each other. It is characterized in that the end wall portion and the side wall portion are erected and assembled while unfolding.

Further, in the present invention, the side wall portion is connected to the left and right side edges of the bottom plate portion via the first folding line, and the side edge of the outer wall piece opposite to the bottom plate portion. It is composed of an inner side wall piece that is continuously provided via the fifth folding line, bent at the fifth folding line, and overlapped and attached to the inner surface of the outer wall piece, in the front-rear direction of the inner wall piece. The length is made smaller than the length in the front-rear direction of the outer wall piece, and a locking step portion is formed on the front-rear end edge of the side wall portion.
The end wall portion is connected to the front and rear end edges of the bottom plate portion via the second folding line, and the outer end wall piece has a sixth edge opposite to the bottom plate portion. It is composed of an inner end wall piece that is continuously provided via a fold line, bent at the sixth fold line, and overlapped and attached to the inner surface of the outer end wall piece, and is composed of left and right side edges of the outer end wall piece. A locking protrusion is formed on the
When the end wall portion and the side wall portion are erected during use of the assembly container, the locking projection of the end wall portion is locked to the locking step portion of the side wall portion.

Further, the present invention is characterized in that the locking projection is formed in the middle portion of the left and right side edges of the outer end wall piece, and a cut is formed in the middle portion of the third folding line.

Further, in the present invention, the side wall portion is connected to the left and right side edges of the bottom plate portion via the first folding line, and the side edge of the outer wall piece opposite to the bottom plate portion. The side wall frame piece connected via the 7th fold line and the side edge of the side wall frame piece opposite to the outer wall piece are connected via the 8th fold line and opposite to the side wall frame piece. From an inner side wall piece in which notches are formed at both front and rear ends of the side edge, and a side wall glue allowance piece serially provided on the side edge between the notches of the inner side wall piece via a ninth folding line. The side wall glue margin piece is configured so that the side wall frame piece and the inner side wall piece are bent at the seventh folding line and the eighth folding line, respectively, and the inner side wall piece faces the inner surface of the outer wall piece. It is attached to the bottom plate and
The end wall portion is connected to the front and rear end edges of the bottom plate portion via the second folding line, and the tenth edge of the outer end wall piece opposite to the bottom plate portion. An end wall frame piece connected via a fold line, an inner end wall piece connected via an eleventh fold line at an end edge of the end wall frame piece opposite to the outer end wall piece, and the above. The end wall frame piece and the inner end wall piece are composed of an end wall glue margin piece which is connected to the end edge of the inner end wall piece opposite to the end wall frame piece via a 12th folding line. Is bent at the 10th folding line and the 11th folding line, respectively, and the end wall glue margin piece is attached to the bottom plate portion in a state where the inner end wall piece faces the inner surface of the outer end wall piece.
In the folded state of the assembled container, the end wall portion is bent inward at the second folding line and is overlapped with the bottom plate portion in a state of being fitted in the notch portion.

Further, in the present invention, the length of the inner side wall piece in the front-rear direction is made smaller than the length of the outer wall piece in the front-rear direction, and a locking step portion is formed on the front-rear end edge of the side wall portion.
When the end wall portion and the side wall portion are erected during use of the assembly container, the left and right end portions of the end wall portion are locked to the locking step portion.

Further, in the present invention, a holding protrusion is formed on the front and rear edge of the inner side wall piece near the side wall glue margin.
When the end wall portion and the side wall portion are erected during use of the assembly container, the upper side of the left and right end portions of the end wall portion is locked to the locking step portion, and the holding protrusion of the side wall portion is locked. It is characterized in that it is locked to the lower side of the left and right end portions of the end wall portion.

According to the assembly container according to the present invention, at the time of use, the end wall portion and the side wall portion can be erected and assembled while unfolding the bent portion and the folded portion of the connecting pieces that overlap each other. As described above, in the assembled state, the connecting piece fixed to the outer surface of the end wall portion is folded in half, and the repulsive force does not cause the end wall portion to easily fall inside the container, so that the assembled state can be maintained stably. it can.

It is a perspective view which shows the assembly state of the assembly container of this embodiment. It is a perspective view which shows the folded state of the assembly container of this embodiment. It is a top view which shows the manufacturing process of the assembly container of this embodiment. It is a top view which shows the manufacturing process of the assembly container of this embodiment. It is a top view which shows the manufacturing process of the assembly container of this embodiment. It is a top view which shows the manufacturing process of the assembly container of this embodiment. It is a top view which shows the manufacturing process of the assembly container of this embodiment. It is a perspective view which shows the assembly process of the assembly container of this embodiment. It is a partially enlarged plan view of the corner part of the assembly container of this embodiment. It is a perspective view of another embodiment of the assembly container which concerns on this invention. It is a top view which shows the manufacturing process of another embodiment of the assembly container which concerns on this invention. It is a top view which shows the manufacturing process of another embodiment of the assembly container which concerns on this invention. It is a top view which shows the manufacturing process of another embodiment of the assembly container which concerns on this invention. It is a top view which shows the manufacturing process of another embodiment of the assembly container which concerns on this invention. It is a top view which shows the manufacturing process of another embodiment of the assembly container which concerns on this invention. It is an enlarged plan view of the main part of the corner part of another embodiment of the assembly container which concerns on this invention. It is an enlarged sectional view of the main part of the lower part of the corner part of another embodiment of the assembly container which concerns on this invention.

As shown in FIG. 1, the assembly container 10 of the present embodiment is a pair of a rectangular bottom plate portion 1 and a pair connected to the left and right side edges (long sides) of the bottom plate portion 1 via the first folding line B1, respectively. A pair of end wall portions 3 connected to the side wall portion 2 and the front and rear end edges (short sides) of the bottom plate portion 1 via the second folding line B2, and a third on the front and rear end edges of each side wall portion 2, respectively. It is composed of a connecting piece 4 which is continuously provided via the folding line B3 and is attached to the outer surface of the end wall portion 3.

The side wall portion 2 of the present embodiment is configured as a double wall composed of an outer wall piece 21 and an inner side wall piece 22 attached to the inner surface of the outer wall piece 21, and the end wall portion 3 is also an outer end. It is configured as a double wall composed of a wall piece 31 and an inner end wall piece 32 attached to the inner surface of the outer end wall piece 31. Each connecting piece 4 is formed with an oblique folding line B4 forming 45 ° with respect to the third folding line B3, and each connecting piece 4 is a bent portion closer to the side wall portion 2 with the diagonal folding line B4 as a boundary. It is divided into 41 and a folded-back portion 42 closer to the end wall portion 3. The folded-back portion 42 of the connecting piece 4 is attached to the outer surface of the end wall portion 3 (the outer surface of the outer end wall piece 31) with an adhesive.

Further, as shown in FIG. 2, the assembly container 10 of the present embodiment is manufactured in a state of being folded into a flat plate shape, and can be stored and transported compactly. In this folded state, each connecting piece 4 is bent along the diagonal folding line B4 and sandwiched between the end wall portion 3 and the side wall portion 2 in a state where the folded portion 42 and the bent portion 41 overlap.

Hereinafter, the manufacturing process of the assembly container 10 of the present embodiment will be described with reference to FIGS. 3 to 7.

First, as shown in FIG. 3, a blank sheet b1 obtained by punching a paperboard into a predetermined shape is prepared. The blank sheet b1 has a rectangular bottom plate portion 1, an outer wall piece 21 connected to the left and right side edges of the bottom plate portion 1 via the first folding line B1, and a bottom plate portion 1 of the outer wall piece 21. An inner side wall piece 22 connected to the opposite side edge via the fifth folding line B5, an outer end wall piece 31 connected to the front and rear end edges of the bottom plate portion 1 via the second folding line B2, and the outside. The inner end wall piece 32, which is connected to the end wall piece 31 opposite to the bottom plate portion 1 via the sixth fold line B6, and the front and rear end edges of the outer wall piece 21 via the third fold line B3, respectively. Bent 41 and the end near the side wall 2 with the diagonal fold B4 formed so as to form 45 ° with respect to the third fold B3 from the corner of the bottom plate 1 to the outside. It is provided with a connecting piece 4 divided into a folded-back portion 42 near the wall portion 3.

The length L2 in the front-rear direction of the inner side wall piece 22 is smaller than the length L1 in the front-rear direction of the outer wall piece 21, and the middle portion of the left and right side edges of the outer end wall piece 31 is formed. A locking projection 33 that protrudes in the left-right direction is formed.

In the present embodiment, a plurality of cuts (S4, S6) are formed along the diagonal fold line B4 and the sixth fold line B6. This makes it easier to bend the folded-back portion 42 of the connecting piece 4 and the inner end wall piece 32 of the end wall portion 3. Of course, it is not necessary to form a cut in each folding line, and various design changes can be made depending on the material, thickness, etc. of the blank sheet. Further, one cut S3 corresponding to the locking projection 33 of the outer end wall piece 31 is formed in the middle portion of the third folding line B3.

Next, as shown in FIG. 4, the pair of left and right inner side wall pieces 22 are bent inward at the fifth folding line B5 and overlapped with the outer wall piece 21, and both are attached with an adhesive. As a result, the side wall portion 2 of the double wall structure is formed, and the length L2 of the inner side wall piece 22 in the front-rear direction is smaller than the length L1 of the outer wall piece 21 in the front-rear direction. A locking step portion 23 having a step T1 is formed on the front and rear edge edges of the portion 2. Similarly, the pair of front and rear inner end wall pieces 32 are bent inward at the sixth folding line B6 and overlapped with the outer end wall pieces 31, and both are attached with an adhesive. As a result, the end wall portion 3 having a double wall structure is formed, and the locking projections 33 protruding in the left-right direction are formed on the left and right side edges of the outer end wall piece 31. The locking projection 33 projects in the middle of the left right edge.

Next, as shown in FIG. 5, the pair of front and rear end wall portions 3 are bent inward along the second folding line B2 and overlapped with the bottom plate portion 1. As a result, the outer end wall piece 31 of the end wall portion 3 appears on the front side, and the inner end wall piece 32 faces the bottom plate portion 1 on the back side.

Next, as shown in FIG. 6, each connecting piece 4 is bent inward at the third folding line B3 and overlapped with the side wall portion 2, and the folded portion 42 of the connecting piece 4 is bent outward at the diagonal folding line B4 to be a bent portion. Overlay on 41. Then, the adhesive is applied to the upper surface of the folded-back portion 42 overlapped on the bent portion 41.

Then, as shown in FIG. 7, the pair of left and right side wall portions 2 are bent inward along the first folding line B1 and overlapped with the end wall portion 3 and the bottom plate portion 1 together with the connecting piece 4, and the folded portion 42 of the connecting piece 4 is placed on the end wall. It is attached and fixed to the outer surface of the part 3. In this way, the folded assembly container 10 shown in FIG. 2 is manufactured.

As described above, since the assembly container 10 of the present embodiment can be manufactured in a compact folded state, it is convenient without being bulky during storage and transportation.

Then, when using the assembly container 10 of the present embodiment, as shown in FIG. 8, as long as a thumb or the like is hung on the pair of folded end wall portions 3 and the container 10 is raised upward, the left and right side edges of the end wall portions 3 are used. The pair of side wall portions 2 are simultaneously raised upward by being pressed by the user, and the end wall portion 3 and the side wall portion 2 stand up while the bent portions 41 and the folded portions 42 of the connecting pieces 4 that overlap each other are unfolded. Then, as shown in FIG. 9, by the standing operation of the end wall portion 3 and the side wall portion 2, the locking projection 33 of the end wall portion 3 is locked to the locking step portion 23 of the side wall portion 2, and the assembly container 10 Can be assembled in a box shape with one touch.

As described above, according to the assembly container 10 of the present embodiment, when the connecting piece 4 is used, the end wall portion 3 and the side wall portion 2 are erected while deploying the bent portion 41 and the folded portion 42 that overlap each other of the connecting pieces 4. Since it can be assembled, unlike the conventional product, the connecting piece fixed to the outer surface of the end wall portion is folded in half in the assembled state, and the repulsive force does not cause the end wall portion to easily fall inside the container. The assembled state can be maintained stably.

Further, according to the assembly container 10 of the present embodiment, the locking projection 33 of the standing end wall portion 3 can be locked to the locking step portion 23 of the side wall portion 2, so that the assembled state can be maintained more stably. can do.

Moreover, in the assembly container 10 of the present embodiment, the locking projection 33 is formed not at the upper ends of the left and right side edges of the end wall portion 3 where the pressing force against the side wall portion 2 is concentrated at the time of assembly, but at the middle portion thereof. At the same time, since the cut S3 is formed in the middle portion of the third folding line B3 of the side wall portion 2, the standing operation of the end wall portion 3 and the side wall portion 2 can be performed more smoothly.

Although the assembly container of the present embodiment has been described above, the present invention can also be implemented in other embodiments. For example, as shown in FIGS. 10 to 17, it may be configured as an assembly container 20 with a frame.

As shown in FIG. 10, the assembly container 20 includes a rectangular bottom plate portion 1 and a pair of side wall portions 2 connected to the left and right side edges (long sides) of the bottom plate portion 1 via the first folding line B1, respectively. , A pair of end wall portions 3 connected to the front and rear end edges (short sides) of the bottom plate portion 1 via the second folding line B2, and the front and rear end edges of each side wall portion 2 via the third folding line B3, respectively. It is composed of a connecting piece 4 that is continuously provided and attached to the outer surface of the end wall portion 3.

The side wall portion 2 of the assembly container 20 is composed of an outer wall piece 24, a side wall frame piece 25, and an inner side wall piece 26 facing the inner surface of the outer wall piece 24 at intervals of the width of the side wall frame piece 25. It is configured as a double wall with a frame, and the end wall portion 3 is also spaced apart from the outer end wall piece 34, the end wall frame piece 35, and the width of the end wall frame piece 35. It is configured as a double wall with a frame, which is composed of an inner end wall piece 36 facing the inner surface of the above. Each connecting piece 4 is formed with an oblique folding line B4 forming 45 ° with respect to the third folding line B3, and each connecting piece 4 is a bent portion closer to the side wall portion 2 with the diagonal folding line B4 as a boundary. It is divided into 44 and a folded portion 45 closer to the end wall portion 3. The folded-back portion 45 of the connecting piece 4 is attached to the outer surface of the end wall portion 3 (the outer surface of the outer end wall piece 34) with an adhesive.

Hereinafter, the manufacturing process of the assembled container 20 with a frame will be described with reference to FIGS. 11 to 15.

First, as shown in FIG. 11, a blank sheet b2 obtained by punching a paperboard into a predetermined shape is prepared. The blank sheet b2 has a rectangular bottom plate portion 1, an outer wall piece 24 connected to the left and right side edges of the bottom plate portion 1 via the first folding line B1, and a bottom plate portion 1 of the outer wall piece 24. The side wall frame piece 25 connected to the opposite side edge via the 7th fold line B7 and the side wall piece 25 connected to the outer wall piece 24 of the side wall frame piece 25 via the 8th fold line B8. A ninth folding line B9 is formed on the side edge between the inner side wall piece 26 in which the cutouts 27 are formed at both front and rear ends on the side edge opposite to the side wall frame piece 25 and the pair of cutouts 27 of the inner side wall piece 26. It is provided with a side wall glue allowance piece 28 which is serially provided therethrough.

Further, the blank sheet b2 has an outer end wall piece 34 connected to the front and rear end edges of the bottom plate portion 1 via the second folding line B2, and an end edge of the outer end wall piece 34 on the opposite side to the bottom plate portion 1. The end wall frame piece 35 connected via the 10th folding line B10 and the inner end wall frame piece 35 connected via the 11th folding line B11 at the end edge opposite to the outer end wall piece 34. The end wall piece 36, the end wall glue margin piece 37 connected to the end edge of the inner end wall piece 36 opposite to the end wall frame piece 35 via the 12th folding line B12, and the front and rear of the outer wall piece 24. A side wall portion that is connected to each end edge via a third fold line B3 and is formed so as to form 45 ° with respect to the third fold line B3 from the corner of the bottom plate portion 1 to the outside. It is provided with a connecting piece 4 divided into a bent portion 44 closer to 2 and a folded portion 45 closer to the end wall portion 3.

The length L4 of the inner wall piece 26 in the front-rear direction is smaller than the length L3 of the outer wall piece 24 in the front-rear direction, and the length L4 of the inner side wall piece 26 is closer to the side wall glue margin piece 28 at the front-rear edge of the inner wall piece 26. Is formed with a holding protrusion 29 protruding in the front-rear direction.

In this embodiment, a plurality of cuts (S3, S4, S9, S12) are formed along the third folding line B3, the diagonal folding line B4, the ninth folding line B9, and the twelfth folding line B12. This makes it easier to bend the bent portion 44, the folded portion 45, the side wall glue margin piece 28, and the end wall glue margin piece 37. Of course, it is not necessary to form a cut in each fold line, and various design changes can be made depending on the material, thickness, etc. of the blank sheet.

Next, as shown in FIG. 12, the pair of left and right side wall frame pieces 25 are bent inward at the seventh folding line B7 to superimpose the side wall frame piece 25 and the inner side wall piece 26 on the outer wall piece 24, and the side wall glue margin piece 28. Is superposed on the bottom plate portion 1, and the side wall glue margin piece 28 and the bottom plate portion 1 are fixed with an adhesive. As a result, the side wall portion 2 of the double wall structure with a frame is formed, and the length L4 of the inner side wall piece 26 in the front-rear direction is smaller than the length L3 of the outer wall piece 24 in the front-rear direction. A locking step portion 23 having a step T2 is formed on the front and rear edge edges of the side wall portion 2. Similarly, the pair of front and rear end wall frame pieces 35 are bent inward at the 10th folding line B10 so that the end wall frame piece 35 and the inner end wall piece 36 are overlapped with the outer end wall piece 34, and the end wall glue margin piece 37 is placed on the bottom plate. The end wall glue margin piece 37 and the bottom plate portion 1 are fixed with an adhesive so as to be overlapped with the portion 1. As a result, the end wall portion 3 of the double wall structure with a frame is formed.

Next, as shown in FIG. 13, the outer end wall pieces 34 of the pair of front and rear end wall portions 3 are bent inward along the second folding line B2, and the end wall portions 3 are overlapped with the bottom plate portion 1. At this time, the inner end wall piece 36 of the end wall portion 3 is bent inward at the 12th folding line B12, and the end wall frame piece 35 is bent at the 11th folding line B11 with respect to the inner end wall piece 36, and the outer end. The bent state at the 10th folding line B10 with respect to the wall piece 34 is returned. Further, since the cutouts 27 are formed at both front and rear ends of the side edges of the inner side wall piece 26 of the side wall portion 2, the end wall portion 3 is overlapped with the bottom plate portion 1 in a state of being fitted in these cutout portions 27.

Next, as shown in FIG. 14, each connecting piece 4 is bent inward at the third folding line B3 and overlapped with the side wall portion 2, and the folded portion 45 of the connecting piece 4 is bent outward at the diagonal folding line B4 to be a bent portion. Overlay on 44. Then, the adhesive is applied to the upper surface of the folded portion 45 overlaid on the bent portion 44.

Then, as shown in FIG. 15, the outer wall pieces 24 of the pair of left and right side wall portions 2 are bent inward along the first folding line B1 and overlapped with the connecting piece 4 together with the end wall portion 3 and the bottom plate portion 1 to form the connecting piece 4. The folded-back portion 45 is attached and fixed to the outer surface of the end wall portion 3. At this time, the inner side wall piece 26 of the side wall portion 2 is bent inward at the ninth folding line B9, the side wall frame piece 25 is bent with respect to the inner side wall piece 26 at the eighth folding line B8, and the outer wall piece 24 is bent. The bent state at the 7-fold line B7 is returned.

In this way, the assembled container 20 in the folded state is manufactured, and the assembled container 20 can be stored and transported in the compact folded state as it is.

Then, when the assembly container 20 is used, the pair of side wall portions 2 are pressed by the left and right side edges of the end wall portions 3 at the same time as long as the pair of folded end wall portions 3 is raised by a thumb or the like. While being raised upward, the end wall portion 3 and the side wall portion 2 stand up while the bent portions 44 and the folded portions 45 of the connecting pieces 4 overlapping each other are unfolded. Then, by the standing operation of the end wall portion 3 and the side wall portion 2, as shown in FIGS. 16 and 10, the upper side of the left and right end portions of the end wall portion 3 is locked to the locking step portion 23 of the side wall portion 2. At the same time, as shown in FIGS. 17 and 10, the holding protrusions 29 of the side wall portion 2 are locked to the lower side of the left and right end portions of the end wall portion 3, and the framed assembly container 20 is assembled in a box shape with one touch. ..

In this way, also in the case of the assembly container 20, when the connecting piece 4 is used, the end wall portion 3 and the side wall portion 2 can be erected and assembled while unfolding the bent portion 44 and the folded portion 45 that overlap each other of the connecting pieces 4. Therefore, unlike the conventional product, the connecting piece fixed to the outer surface of the end wall is folded in half in the assembled state, and the repulsive force does not cause the end wall to easily fall inside the container, and the assembled state is stable. Can be maintained at.

Further, according to the assembly container 20, the upper side of the left and right end portions of the upright end wall portion 3 can be locked to the locking step portion 23 of the side wall portion 2, and the assembled state can be maintained more stably. Can be done.

Further, according to the assembly container 20, notches 27 are formed at the front and rear ends of the side edges of the inner side wall piece 26 of the side wall portion 2 configured as a double wall with a frame, and in the folded state, the same framed two Since the end wall portion 3 configured as a heavy wall can be accommodated in these notches 27, the framed assembly container 20 can be folded more compactly.

Moreover, according to the assembly container 20, the holding projection 29 of the side wall portion 2 that has been erected can be locked to the lower side of the left and right end portions of the end wall portion 3, so that the notch portion 27 is formed in the inner side wall portion 26. Even if it is, there is no difficulty that both ends of the lower portion of the raised inner side wall piece 26 protrude inward of the container, and this also makes it possible to maintain the assembled state more stably.

The present invention can be carried out in a mode in which various improvements, modifications, and modifications are added based on the knowledge of those skilled in the art, without departing from the spirit of the present invention. Further, any of the invention-specific items may be replaced with another technique within the range in which the same action or effect is produced, or the invention-specific items integrally configured may be composed of a plurality of members. Alternatively, the invention-specific matters composed of a plurality of members may be carried out in a form integrally configured.

10, 20 Assembly container 1 Bottom plate 2 Side wall 21, 24 Outer side wall piece 22, 26 Inner side wall piece 23 Locking step 25 Side wall frame piece 27 Notch 28 Side wall glue margin piece 29 Holding protrusion 3 End wall part 31, 34 Outer end wall piece 32, 36 Inner end wall piece 33 Locking protrusion 35 End wall frame piece 37 End wall glue margin piece 4 Connecting piece 41, 44 Folded part 42, 45 Folded part B1 1st folding line B2 2nd folding line B3 3 Fold line B4 Diagonal fold line B5 5th fold line B6 6th fold line B7 7th fold line B8 8th fold line B9 9th fold line B10 10th fold line B11 11th fold line B12 12th fold line L1, L3 Length L2 in the front-back direction of the inner wall piece , L4 Length of outer side wall piece in the front-back direction S3 (of the third fold line)

In the present invention, a rectangular bottom plate portion, a pair of side wall portions connected to the left and right side edges of the bottom plate portion via first folding lines, and front and rear end edges of the bottom plate portion via second folding lines, respectively. The corners of the bottom plate portion are connected to the pair of end wall portions and the front and rear edge edges of the side wall portions via the third folding line, respectively, so as to form 45 ° with respect to the third folding line. A connecting piece divided into a bent portion near the side wall portion and a folded portion near the end wall portion with a diagonal folding line formed from the portion as a boundary is provided, and the folded portion of the connecting piece is the end. An assembly container that is attached to the outer surface of the wall.
In the folded state of the assembly container, the end wall portion is bent inward at the second folding line and overlapped with the bottom plate portion, and the bent portion of the connecting piece is bent inward at the third folding line. It is overlapped with the side wall portion, the folded portion is bent at the diagonal folding line and overlapped with the bent portion, the side wall portion is bent inward at the first folding line, and the end wall portion and the end wall portion and the said portion together with the connecting piece. The folded portion and the end wall portion of the connecting piece are attached to each other in a state of being overlapped with the bottom plate portion, and when the assembly container is used, the bent portion and the folded portion of the connecting piece overlapping each other. Assembled with the end wall and the side wall standing upright while unfolding .
The side wall portion is connected to the left and right side edges of the bottom plate portion via the first folding line, and the outer wall piece is connected to the side edge of the outer wall piece opposite to the bottom plate portion via the seventh folding line. The side wall frame piece and the side edge of the side wall frame piece on the side opposite to the outer wall piece are connected to each other via the eighth folding line, and the front and back on the side edge opposite to the side wall frame piece. The side wall frame is composed of an inner side wall piece having cutouts formed at both ends and a side wall glue allowance piece connected to the side edge between the cutouts of the inner side wall piece via a ninth folding line. The side wall glue margin piece is attached to the bottom plate portion in a state where the piece and the inner side wall piece are bent at the 7th folding line and the 8th folding line, respectively, and the inner side wall piece faces the inner surface of the outer wall piece. And
The end wall portion is connected to the front and rear end edges of the bottom plate portion via the second folding line, and the tenth edge of the outer end wall piece opposite to the bottom plate portion. An end wall frame piece connected via a fold line, an inner end wall piece connected via an eleventh fold line at an end edge of the end wall frame piece opposite to the outer end wall piece, and the above. The end wall frame piece and the inner end wall piece are composed of an end wall glue margin piece which is connected to the end edge of the inner end wall piece opposite to the end wall frame piece via a 12th folding line. Is bent at the 10th folding line and the 11th folding line, respectively, and the end wall glue margin piece is attached to the bottom plate portion in a state where the inner end wall piece faces the inner surface of the outer end wall piece.
In the folded state of the assembled container, the end wall portion is bent inward at the second folding line and is overlapped with the bottom plate portion in a state of being fitted in the notch portion.
The length of the inner side wall piece in the front-rear direction is made smaller than the length of the outer wall piece in the front-rear direction, and a locking step portion is formed on the front-rear end edge of the side wall portion.
When the end wall portion and the side wall portion are erected during use of the assembly container, the left and right end portions of the end wall portion are locked to the locking step portion .

Claims (6)

With a rectangular bottom plate
A pair of side wall portions connected to the left and right side edges of the bottom plate portion via the first folding line, respectively.
A pair of end wall portions connected to the front and rear end edges of the bottom plate portion via a second folding line, respectively.
The front and rear end edges of each of the side wall portions are connected to each other via a third fold line, and the diagonal fold line formed from the corner portion of the bottom plate portion is defined as a boundary so as to form 45 ° with respect to the third fold line. A connecting piece divided into a bent portion near the side wall portion and a folded portion near the end wall portion,
An assembly container in which the folded portion of the connecting piece is attached to the outer surface of the end wall portion.
In the folded state of the assembly container, the end wall portion is bent inward at the second folding line and overlapped with the bottom plate portion, and the bent portion of the connecting piece is bent inward at the third folding line. It is overlapped with the side wall portion, the folded portion is bent at the diagonal folding line and overlapped with the bent portion, the side wall portion is bent inward at the first folding line, and the end wall portion and the end wall portion and the said portion together with the connecting piece. The folded-back portion and the end wall portion of the connecting piece are attached to each other in a state of being overlapped with the bottom plate portion.
An assembly container characterized in that when the assembly container is used, the end wall portion and the side wall portion are erected while the bent portion and the folded portion of the connecting pieces overlapping each other are unfolded. The side wall portion is connected to the left and right side edges of the bottom plate portion via the first folding line, and the outer wall piece is connected to the side edge of the outer wall piece opposite to the bottom plate portion via the fifth folding line. It is composed of an inner side wall piece that is continuously provided, bent at the fifth folding line, and overlapped and attached to the inner surface of the outer wall piece, and the length of the inner wall piece in the front-rear direction is the outer wall. The length of the piece in the front-rear direction is made smaller, and a locking step portion is formed on the front-rear edge of the side wall portion.
The end wall portion is connected to the front and rear end edges of the bottom plate portion via the second folding line, and the outer end wall piece has a sixth edge opposite to the bottom plate portion. It is composed of an inner end wall piece that is continuously provided via a fold line, bent at the sixth fold line, and overlapped and attached to the inner surface of the outer end wall piece, and is composed of left and right side edges of the outer end wall piece. A locking protrusion is formed on the
The first aspect of the present invention is that when the end wall portion and the side wall portion are erected during use of the assembly container, the locking projection of the end wall portion is locked to the locking step portion of the side wall portion. Assembled container described in. The assembly container according to claim 2, wherein the locking projection is formed in the middle portion of the left and right side edges of the outer end wall piece, and a cut is formed in the middle portion of the third folding line. .. The side wall portion is connected to the left and right side edges of the bottom plate portion via the first folding line, and the outer wall piece is connected to the side edge of the outer wall piece opposite to the bottom plate portion via the seventh folding line. The side wall frame piece and the side edge of the side wall frame piece on the side opposite to the outer wall piece are connected to each other via the eighth folding line, and the front and back on the side edge opposite to the side wall frame piece. The side wall frame is composed of an inner side wall piece having cutouts formed at both ends and a side wall glue allowance piece connected to the side edge between the cutouts of the inner side wall piece via a ninth folding line. The side wall glue margin piece is attached to the bottom plate portion in a state where the piece and the inner side wall piece are bent at the 7th folding line and the 8th folding line, respectively, and the inner side wall piece faces the inner surface of the outer wall piece. And
The end wall portion is connected to the front and rear end edges of the bottom plate portion via the second folding line, and the tenth edge of the outer end wall piece opposite to the bottom plate portion. An end wall frame piece connected via a fold line, an inner end wall piece connected via an eleventh fold line at an end edge of the end wall frame piece opposite to the outer end wall piece, and the above. The end wall frame piece and the inner end wall piece are composed of an end wall glue margin piece which is connected to the end edge of the inner end wall piece opposite to the end wall frame piece via a 12th folding line. Is bent at the 10th folding line and the 11th folding line, respectively, and the end wall glue margin piece is attached to the bottom plate portion in a state where the inner end wall piece faces the inner surface of the outer end wall piece.
The first aspect of the present invention, wherein in the folded state of the assembled container, the end wall portion is bent inward at the second folding line and is overlapped with the bottom plate portion in a state of being contained in the notch portion. Assembly container. The length of the inner side wall piece in the front-rear direction is made smaller than the length of the outer wall piece in the front-rear direction, and a locking step portion is formed on the front-rear end edge of the side wall portion.
The assembly according to claim 4, wherein when the end wall portion and the side wall portion are erected during use of the assembly container, the left and right end portions of the end wall portion are locked to the locking step portion. container. A holding protrusion is formed on the front and rear edge of the inner side wall piece toward the side wall glue margin.
When the end wall portion and the side wall portion are erected during use of the assembly container, the upper side of the left and right end portions of the end wall portion is locked to the locking step portion, and the holding protrusion of the side wall portion is locked. The assembly container according to claim 5, wherein the assembly container is locked to the lower side of the left and right end portions of the end wall portion.