JP6733197B2 - Assembly box - Google Patents

Description

The present invention relates to an assembly box that is assembled by bending a blank plate.

A conventional assembly box is disclosed in Patent Document 1. This assembly box is a so-called body box with a frame, and is assembled by bending a blank plate. The assembly box has a rectangular bottom plate and a plurality of peripheral wall portions provided upright from the peripheral edges of the sides of the bottom plate, and the top surface is provided with an opening facing the bottom plate.

The peripheral wall portion has an outer surface plate, a frame piece and an inner surface plate, and the contents are stored inside the peripheral wall portion. The outer plate is bent from the peripheral edge of the bottom plate to form an outer peripheral surface, and is arranged substantially perpendicular to the bottom plate. The frame piece is bent inward from the upper end of the outer plate, and the upper surface of the frame piece is arranged substantially parallel to the bottom plate. The inner surface plate is folded back from the inner peripheral end of the frame piece toward the bottom plate to form an inner peripheral surface, and is arranged substantially perpendicular to the bottom plate. A buffer portion formed of a space is formed between the outer surface plate and the inner surface plate.

One of the pair of opposing peripheral wall portions has side surface flaps that are connected to both ends of the outer surface plate and the inner surface plate. The other pair of peripheral wall portions facing each other are bent from the bottom plate with the side flaps arranged inside, and the locking projections provided at the lower end of the inner surface plate are locked in the locking holes provided in the bottom plate. As a result, the side surface flap of one peripheral wall portion abuts against the lower surface of the frame piece of the other peripheral wall portion, and tilting is prevented. The other peripheral wall portion is prevented from tilting by the side surface flap of the one peripheral wall portion contacting the outer surface plate and the inner surface plate.

Since the shock absorbing portion is provided in the assembly box having the above-described configuration, when a force is applied to the outer face plate from the outside, the force is less likely to be transmitted to the contents stored inside the inner face plate. Therefore, damage to the contents can be prevented.

Japanese Patent Laid-Open No. 2000-79938 (pages 4, 5 and 2), FIGS. 1 and 3)

However, according to the above-described conventional assembly box, one end of the adjacent frame piece is arranged on the upper surface of the other. Therefore, there is a problem in that the end of the frame piece arranged above is caught and raised by a finger or the like at the time of assembling, resulting in a defective appearance of the assembly box. Further, since the peripheral wall portion is formed in a rectangular vertical cross-section, it is easy to tilt. The side flaps prevent both end portions of each peripheral wall portion in the longitudinal direction from tilting, but the central portion tilts and the peripheral wall portion bulges outward. For this reason, there is also a problem that the appearance of the assembly box is impaired.

An object of the present invention is to provide an assembly box that can reduce appearance defects and improve aesthetics.

In order to achieve the above object, the present invention is an assembly box having a blank plate bent and assembled and having a peripheral wall portion standing from the periphery of the base portion of the flat plate and having an opening portion facing the base portion
An outer surface plate in which the peripheral wall portion is bent from the peripheral edge of the base portion to form an outer peripheral surface, and an inner surface plate that is folded back from the end portion on the opening side of the outer surface plate toward the base portion to form an inner peripheral surface. Have
The outer surface plate is inclined in a direction away from the inner surface plate toward the base portion from the end portion of the opening, and a buffer portion formed of a space between the outer surface plate and the inner surface plate substantially perpendicular to the base portion. Is formed.

With this configuration, the contents are stored inside the peripheral wall portion through the opening. A buffer portion formed of a space is arranged between the outer surface plate and the inner surface plate of the peripheral wall portion.

Further, in the present invention, in the assembly box having the above-mentioned configuration, it is preferable that the outer surface plate is curved so as to project outward.

Further, in the present invention, in the assembly box having the above-mentioned structure, side flaps that are bent from both ends of the outer plate are provided, and one of the adjacent side flaps is bent along the other side flap. It is preferable to have a gusset portion.

Further, in the present invention, in the assembly box having the above configuration, the gusset portion of one of the side surface flaps is formed in a leaf shape narrower than a central portion at the end portion on the base side and the end portion on the opening side, The side flaps adjacent to the side flaps are preferably curved outwardly concavely.

Further, in the present invention, in the assembly box having the above-described configuration, it is preferable that a plane including an edge on the base side and an edge on the opening side of the outer plate be inclined with respect to the base.

Further, according to the present invention, in the assembly box having the above structure, it is preferable that the base portion is formed in a rectangular shape and the peripheral wall portions are formed on four sides of the base portion.

According to the present invention, in the assembly box having the above structure, the base portion is formed in a rectangular shape, the peripheral wall portion is formed on three sides of the base portion, and the base portion is continuously provided on one side where the peripheral wall portion is not formed. It is preferable to provide a peripheral wall plate and a lid portion that is connected to the end portion of the peripheral wall plate on the opening side and that opens and closes the opening.

According to the present invention, since the inner surface plate is formed by folding back from the end portion on the opening portion side of the outer surface plate toward the base portion, the opening portion side of the peripheral wall portion is formed in a linear shape. As a result, since the peripheral wall portion does not have a frame piece as in the conventional example, it is possible to reduce the appearance defect due to the vertically overlapping frame pieces.

Further, since the outer surface plate is inclined in the direction away from the inner surface plate from the end of the opening toward the base, the lengths along the surfaces of the inner surface plate and the outer surface plate between the base and the opening are different. As a result, the bulging of the body due to the tilting of the peripheral wall portion can be reduced and the appearance of the assembly box can be improved.

The perspective view which shows the assembly box of 1st Embodiment of this invention. The perspective view seen from the opening part side of the assembly box of 1st Embodiment of this invention. The bottom view which shows the assembly box of 1st Embodiment of this invention. AA sectional view of FIG. Development view showing the blank plate of the assembly box of the first embodiment of the present invention The front view which shows the reinforcing plate of the assembly box of 1st Embodiment of this invention. The perspective view which shows the state in the middle of assembling of the assembly box of 1st Embodiment of this invention. The perspective view which shows the state which closed the lid part of the assembly box of 2nd Embodiment of this invention. The perspective view which shows the state which opened the lid part of the assembly box of 2nd Embodiment of this invention. Development view showing the blank plate of the assembly box of the second embodiment of the present invention The perspective view which shows the state in the middle of the assembly of the assembly box of 2nd Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view of the assembly box of the first embodiment. The assembly box 1 constitutes a lid box fitted in the body box 200. The body box 200 has an upper surface opened to store contents (not shown) such as products, and the assembly box 1 has a storage portion 20 (see FIG. 2) for storing the body box 200.

FIG. 2 shows a perspective view of the assembly box 1 as seen from below. 1 and 2, the assembly box 1 is assembled by bending a blank plate 100 (see FIG. 5), and includes a tubular body portion 10 and a top plate 6 (base portion). The body 10 has an opening 10a at the lower end. The top plate 6 is formed into a substantially rectangular flat plate and is arranged so as to face the opening 10a. Below the top plate 6, a substantially rectangular flat plate reinforcing plate 7 is attached. The three-dimensional shape of the assembly box 1 accommodating the body box 200 is substantially a truncated pyramid shape.

The body portion 10 is formed by arranging side surface portions 4 and 5 on both sides between the front surface portion 2 and the rear surface portion 3 which face each other. The front surface portion 2, the rear surface portion 3 and the side surface portions 4 and 5 respectively form a peripheral wall portion 8 standing from the peripheral edge of the top plate 6. The front surface portion 2, the rear surface portion 3 and the side surface portions 4 and 5 have outer surface plates 21, 31, 41 and 51, respectively, and also have inner surface plates 22, 32, 42 and 52 respectively. In the following description, the outer plates 21, 31, 41, 51 and the inner plates 22, 32, 42, 52 may be collectively referred to as "outer plate 81" and "inner plate 82", respectively.

On the upper surface (outer surface) of the top plate 6 and the outer peripheral surface of the peripheral wall portion 8, information (characters, designs, etc.) about products stored in the box 200 is printed. As a result, the assembly box 1 can advertise the product. Instead of printing, a sheet or the like on which information about products is printed may be attached to the upper surface of the top plate 6 and the outer peripheral surface of the peripheral wall portion 8.

A corner portion between the front surface portion 2 and the side surface portions 4 and 5 and a corner portion between the back surface portion 3 and the side surface portions 4 and 5 are formed to be recessed toward the storage portion 20 side. In addition, a leaf-shaped gusset portion 12 described below is formed at a corner portion between the front surface portion 2 and the side surface portions 4 and 5 and at a corner portion between the rear surface portion 3 and the side surface portions 4 and 5. The outer surface of the gusset portion 12 is curved so that the outer side is concave.

In addition, at each corner of the assembly box 1, end portions of side surface flaps 41a, 41b, 51a, 51b, which will be described later, on the folding line 90 (see FIG. 5) side are exposed in a leaf shape. At this time, a ridge line portion formed by two folding lines 90 forming the peripheral edge of the gusset portion 12 and extending vertically is provided at each corner portion, and one between the side surface flaps 41a, 41b, 51a, 51b and the outer surface plate 81. A ridge line portion which is composed of the folding line 90 of the book and extends vertically is arranged. That is, three ridge lines are formed at each corner.

3 shows a bottom view of the assembly box 1, and FIG. 4 shows a sectional view taken along the line AA of FIG. Although the outer surface plate 51 and the inner surface plate 52 are illustrated in FIG. 4, the outer surface plates 21, 31, 41 have the same structure as the outer surface plate 51, and the inner surface plates 22, 32, 42 have the same structure. Is the same as.

The outer plates 21, 31, 41, 51 are bent from the front side, the rear side, the right side, and the left side of the top plate 6 through folding lines 90 (see FIG. 5) to form the outer peripheral surface of the body 10. The outer surface plates 21, 31, 41, 51 are convexly curved on the outside. Further, the plane PL including the upper edge (the edge on the top plate 6 side) and the lower edge (the edge on the opening 10a side) of the outer surface plate 51 is inclined with respect to the top plate 6.

The inner surface plates 22, 32, 42, 52 are folded back from the lower ends (ends on the opening 10a side) of the outer surface plates 21, 31, 41, 51 toward the top surface plate 6 to form the inner peripheral surface of the body portion 10. To do. The inner face plates 22, 32, 42, 52 are arranged substantially perpendicular to the top face plate 6.

The width L1 (vertical width) of the outer surface plate 51 in the blank plate 100 (see FIG. 5) is larger than the width L2 (vertical width) of the inner surface plate 52. As a result, the outer plates 21, 31, 41, 51 incline in a direction away from the inner plate 52 from the lower end (the end of the opening 10a) toward the top plate 6. In this embodiment, the width L1 is about 41 mm and the width L2 is about 38.5 mm.

A buffer portion 30 formed of a space is formed between the outer surface plate 51 and the inner surface plate 52. Accordingly, when a force is applied to the outer surface plate 51 from the outside, the buffer portion 30 reduces the transmission of the force to the inner surface plate 52. Therefore, it is possible to prevent damage to the box 200 in the storage section 20 and the products etc. stored in the box 200.

FIG. 5 shows a development view of the assembly box 1. The blank plate 100 forming the assembly box 1 is formed by punching out a sheet made of paper. The material of the blank board 100 is not particularly limited, but, for example, paperboard such as Manila ball, cardboard, cardboard, and craft ball can be used. Alternatively, the blank plate 100 may be formed of a thin resin plate. As the resin plate, for example, a transparent resin plate made of PET (polyethylene terephthalate) or PP (polypropylene) is preferable. Thereby, the customer or the like can easily visually recognize the contents stored in the assembly box 1.

Outer surface plates 21 and 31 are connected to a front end (lower end in the drawing) and a rear end (upper end in the drawing) of the top plate 6 via folding lines 90, respectively. Outer surface plates 41 and 51 are connected to the right end and the left end of the top plate 6 via folding lines 90, respectively.

Inner surface plates 22, 32, 42, 52 are connected to the lower ends of the outer surface plates 21, 31, 41, 51, respectively. Upper surface flaps 23, 33, 43, 53 are connected to upper ends of the inner surface plates 22, 32, 42, 52 via folding lines 90, respectively. U-shaped cuts 42b and 52b having both ends arranged on the folding line 90 are formed at the boundary between the inner surface plate 42 and the upper surface flap 43 and the boundary between the inner surface plate 52 and the upper surface flap 53, respectively.

Engagement plates 44 and 45 are connected to the front and rear ends of the inner surface plate 42 via folding lines 90, and engagement plates 54 and 55 are connected to the front and rear ends of the inner surface plate 52 via folding lines 90 respectively. .. Notches 44a, 45a, 54a, 55a extending in the vertical direction are provided at the tip ends of the engagement plates 44, 45, 54, 55, respectively.

Side surface flaps 21a and 51a adjacent to each other are provided between the adjacent outer surface plates 21 and 51 via a folded portion 91 formed of a lead ruled line. The side surface flap 21a is connected to the outer surface plate 21 via a curved folding line 90, and the side surface flap 51a is connected to the outer surface plate 51 via a curved folding line 90.

Further, a leaf-shaped gusset portion 12 surrounded by a curved folding line 90 is formed on the side surface flap 21a. The end portion of the gusset portion 12 on the top face plate 6 side and the end portion on the inner face plate 22 side are narrower than the central portion.

Similarly, adjacent side surface flaps 21b and 41a are provided between the adjacent outer surface plates 21 and 41 via a folded portion 91 formed of a lead ruled line. The side surface flap 21b is connected to the outer surface plate 21 via a curved folding line 90, and the side surface flap 41a is connected to the outer surface plate 41 via a curved folding line 90. A leaf-shaped gusset portion 12 surrounded by a curved folding line 90 is formed on the side surface flap 21b.

Side surface flaps 31a and 51b adjacent to each other are provided between the adjacent outer surface plates 31 and 51 via a folded portion 91 formed of a lead ruled line. The side surface flap 31a is connected to the outer surface plate 31 via a curved folding line 90, and the side surface flap 51b is connected to the outer surface plate 51 via a curved folding line 90. A leaf-shaped gusset portion 12 surrounded by a curved folding line 90 is formed on the side surface flap 31a.

Side flaps 31b and 41b adjacent to each other are provided between the adjacent outer surface plates 31 and 41 via a folding portion 91 formed of a lead ruled line. The side surface flap 31b is connected to the outer surface plate 31 via a curved folding line 90, and the side surface flap 41b is connected to the outer surface plate 41 via a curved folding line 90. A leaf-shaped gusset portion 12 surrounded by a curved folding line 90 is formed on the side surface flap 31b.

FIG. 6 shows a front view of the reinforcing plate 7. The reinforcing plate 7 is formed in a rectangular shape, and laterally projecting portions 7a are formed at the central portions of the left and right ends in the front-rear direction.

In the above blank plate 100, the inner plates 42 and 52 are bent with respect to the outer plates 41 and 51. Next, the engagement plates 44 and 45 are bent with respect to the inner surface plate 42, and the engagement plates 54 and 55 are bent with respect to the inner surface plate 52.

Next, the outer plates 21, 31, 41, 51 are bent from the top plate 6 and are erected. At this time, the side surface flaps 21 a and 51 a are folded at the folding portion 91 and are arranged between the engagement plate 54 and the outer surface plate 21. Similarly, the side surface flaps 21b and 41a are folded at the folding portion 91 and are arranged between the engagement plate 44 and the outer surface plate 21. The side surface flaps 31a and 51b are folded at the folding portion 91 and are arranged between the engagement plate 55 and the outer surface plate 31. The side surface flaps 31b and 41b are folded at the folding portion 91 and arranged between the engagement plate 45 and the outer surface plate 31.

At this time, the outer surface plates 41, 51 are curved outwardly convexly by the curved fold lines 90 at the ends of the side surface flaps 41a, 41b, 51a, 51b, and the sideward flaps 41a, 41b, 51a, 51b are concaved outward. To bend. The outer surface plates 21 and 31 are curved outwardly by the curved folding lines 90 at the ends of the side surface flaps 21a, 21b, 31a, and 31b.

The side face flaps 21a, 21b, 31a, 31b are bent along the adjacent side face flaps 51a, 41a, 51b, 41b to form the gusset portion 12. At this time, the side surface flaps 21a, 21b, 31a, 31b are curved such that the surfaces facing the side surface flaps 51a, 41a, 51b, 41b are convex toward the storage section 20 (inner side). As a result, the side surface flaps 21a, 21b, 31a, 31b are brought into close contact with the side surface flaps 51a, 41a, 51b, 41b, respectively.

Next, the notch 44a of the engaging plate 44 and the notch 54a of the engaging plate 54 are inserted into each other. Similarly, the notch 45a of the engaging plate 45 and the notch 55a of the engaging plate 55 are mutually inserted. FIG. 7 is a perspective view showing the state at this time. As a result, the inner surface plates 42 and 52 are bent from the lower ends of the outer surface plates 41 and 51 toward the top plate 6, and are arranged substantially perpendicular to the top plate 6. As a result, the buffer portion 30 is formed between the inner surface plates 42, 52 and the outer surface plates 41, 51. At this time, the upper surface flaps 43 and 53 are bent along the top plate 6, and the slits 42a (not shown) and the slit 52a (see FIG. 4) are formed from the notches 42b and 52b, respectively.

Next, the inner face plates 22 and 32 are bent toward the top face plate 6 from the lower ends of the outer face plates 21 and 31, respectively, and are arranged substantially perpendicular to the top face plate 6. As a result, the buffer portion 30 is formed between the inner surface plates 22 and 32 and the outer surface plates 21 and 31. At this time, the engagement plates 44, 45, 54, 55 are arranged in the buffer section 30. Further, the upper surface flaps 23 and 33 are bent along the top plate 6. Then, the upper surface flaps 43 and 53 are arranged above the upper surface flaps 23 and 33 with the opening 10a facing upward. As a result, lifting of the inner surface plates 22 and 32 is reduced.

Next, the reinforcing plate 7 is arranged on the inner surface of the top plate 6, and the protrusions 7a at both ends are inserted into the slits 42a and 52a of the side surface portions 4 and 5, respectively. As a result, the assembly box 1 is assembled.

Then, the assembly box 1 is covered from above the body box 200 in which contents such as products are stored. After that, the body box 200 is sealed by adhering the assembly box 1 and the body box 200 using an adhesive tape member or the like.

According to the present embodiment, the inner surface plate 82 is formed by folding back from the end of the outer surface plate 81 on the side of the opening 10a toward the top plate 6 (base), so that the opening 10a side of the peripheral wall portion 8 is formed in a linear shape. To be done. As a result, since the peripheral wall portion 8 does not have a frame piece as in the conventional example, it is possible to reduce the appearance defect due to the vertically overlapping frame pieces. Further, since the outer face plate 81 is inclined from the end of the opening 10a toward the top face plate 6 and away from the inner face plate 82, the inner face plate 82 and the outer face plate 81 between the top face plate 6 and the opening 10a. The length along the surface of the is different. As a result, the bulging of the body due to the tilting of the peripheral wall portion 8 can be reduced, and the appearance of the assembly box 1 can be improved.

Further, since the outer surface plate 81 is curved convexly on the outer side, it is possible to prevent the outer surface plate 81 from elastically deforming and forming a fold on the outer surface plate 81.

Further, the side surface flaps 51a bent from both side ends of the outer surface plate 51 are provided, and the side surface flap 21a adjacent to the side surface flap 51a has a gusset portion 12 formed by bending along the side surface flap 51a. Thereby, the assembly box 1 can be reinforced.

Further, the gusset portion 12 of the side surface flap 21a is formed in a leaf shape in which an upper end portion (end portion on the top plate 6 side) and a lower end portion (end portion on the opening 10a side) are narrower than a central portion, and is adjacent to the side surface flap 21a. The side flap 51a is curved so that the outside is concave. As a result, the side surface flap 21a and the side surface flap 51a are brought into close contact with each other, and the gap between the corners of the assembly box 1 can be reduced. In addition, since the leaf-shaped gusset portion 12 is visually recognized at each corner of the assembly box 1, the appearance of the assembly box 1 can be improved.

In addition, the inner surface plate 52 is vertically arranged on the top plate 6, and the plane PL including the upper end portion (the end portion on the top plate 6 side) and the lower end portion (the end portion on the opening 10a side) of the outer surface plate 51 is in the top. It is inclined with respect to the face plate 6. Thereby, the assembly box 1 can be easily realized.

<Second Embodiment>
Next, a second embodiment of the present invention will be described. 8 and 9 show perspective views of the assembly box of the second embodiment. 8 and 9 show a state in which the lid portion 35 is closed and an opened state, respectively. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 7 are designated by the same reference numerals. The present embodiment is different from the first embodiment in that an assembly box 91 that is assembled by bending the blank plate 110 (see FIG. 10) is formed by a storage box. Other parts are the same as those in the first embodiment.

The assembly box 91 constitutes a storage box integrally formed with the lid portion 35. The assembly box 91 is assembled by bending a blank plate 110 (see FIG. 10) and includes a tubular body 10 and a bottom plate 11 (base). The three-dimensional shape of the assembly box 91 is a truncated pyramid. The body 10 has an opening 10a at the upper end. The bottom plate 11 is formed of a substantially rectangular flat plate and is arranged so as to face the opening 10a. A substantially rectangular flat plate reinforcing plate 7 is attached above the bottom plate 11. The assembly box 91 has a storage section 20 for storing contents such as products.

A front surface portion 2 and side surface portions 4 and 5 are formed on the front side, left side, and right side of the bottom plate 11, respectively. A peripheral wall plate 34 (outer surface plate) is formed on the rear side of the bottom plate 11 in place of the back surface part 3 of the first embodiment. A flat plate lid portion 35 is connected to the upper end of the peripheral wall plate 34 (the end portion on the opening 10a side). The lid portion 35 is formed to be bendable with respect to the peripheral wall plate 34 through a folding line 90, and opens and closes the storage portion 20.

FIG. 10 shows a development view of the assembly box 91. A peripheral wall plate 34 is connected to the rear end (upper end in the drawing) of the bottom plate 11 via a folding line 90. The lid portion 35 is connected to the upper end of the peripheral wall plate 34 via a fold line 90. Lid flaps 35a, 35b, and 35c are continuously provided at the front end (upper end in the drawing), the left end, and the right end of the lid portion 35 via folding lines 90, respectively. A semicircular grip portion 35d is continuously provided at the front end of the lid flap 35a via a fold line 90. The lid flap 35a is formed with an arcuate cut 35e having both ends arranged on the folding line 90.

An opening/closing plate 21d extending in the left-right direction is provided at the center of the outer plate 21 in the left-right direction. The opening/closing plate 21d is formed in an elliptical shape having a rectangular portion and arc portions at both ends of the rectangular portion. Notches are formed in the upper side portion and the arc portion, and perforations are formed in the lower side portion. Lower surface flaps 45b and 55b are connected to the lower ends of the engagement plates 45 and 55, respectively.

FIG. 11 shows a perspective view of the assembly box 91 during assembly. In the blank plate 110, the insertion piece 35f is cut and raised by bending the holding portion 35d through the folding line 90. The lid flaps 35a, 35b, 35c are bent toward the inner surface side of the lid portion 35 through a fold line 90. The lid flaps 35b and 35c are inserted into the body portion 10, and the lid flap 35a is arranged in front of the outer surface plate 21.

After that, when the insertion piece 35f presses the opening/closing plate 21d, a slit (not shown) is formed between the upper end of the opening/closing plate 21d and the outer surface plate 21. When the insertion piece 35f is inserted into the slit, the opening/closing plate 21d and the upper end portion of the slit hold the insertion piece 35f. Thereby, the closed state of the lid portion 35 is maintained, and the closed state of the storage portion 20 can be maintained. Then, the user can open the lid 35 by holding the holding portion 35d and pulling out the insertion piece 35f from the slit.

In addition, when the lid portion 35 is closed, the front surfaces of the side surface flaps 31a and 31b (curved surfaces curved so that the front is convex) are closely attached to the back surfaces of the side surface flaps 51b and 41b (curved surfaces that are concave outward). To do. As a result, when the lid 35 is closed, it is possible to reduce the gap in the rear corner of the assembly box 91. On the other hand, when the lid portion 35 is opened, the front surfaces of the side surface flaps 31a and 31b are separated from the rear surfaces of the side surface flaps 51b and 41b, respectively.

Also in this embodiment, the same effect as that of the first embodiment can be obtained. Further, the front surface portion 2, the side surface portions 4 and 5 (peripheral wall portion) are formed on the front side, the left side and the right side of the bottom surface plate 11 (base portion), respectively, and the peripheral wall plate 34 and the peripheral wall plate 34 are provided continuously to the rear side. A lid portion 35 is provided which is connected to the upper end portion (end portion on the side of the opening 10a) and opens and closes the opening 10a. This allows the lid 35 to be closed after the necessary contents have been taken out from the storage unit 20, and the remaining contents can be easily stored. Therefore, the convenience of the assembly box 91 can be improved.

The three-dimensional shape of the assembly box 1 of the first embodiment and the assembly box 91 of the second embodiment is not limited to the truncated pyramid, and may be, for example, a prism.

Further, in the first embodiment and the second embodiment, the outer face plates 21, 31, 41, 51 are convexly curved outward, but the outer face plates 21, 31, 41, 51 may be formed of flat plates. ..

INDUSTRIAL APPLICATION This invention can be utilized for the assembly box which bends and assembles a blank board.

1, 91 Assembly box 2 Front part 3 Rear part 4, 5 Side part 6 Top plate 8 Peripheral wall part 10 Body part 11 Bottom plate 12 Machi part 20 Storage part 21, 31, 41, 51 Outer plate 22, 32, 42, 52 Inner face plate 21a, 21b, 31a, 31b, 41a, 41b, 51a, 51b Side face flap 23, 33, 43, 53 Top face flap 44, 45, 54, 55 Engagement plate 100, 110 Blank plate 200 Body box

Claims (4)

In an assembly box that is assembled by bending a blank plate and has a peripheral wall portion standing from the peripheral edge of the base portion of the flat plate and having an opening facing the base portion,
A plurality of forming the inner circumferential surface wrapping a plurality of outer surface plate forming the outer peripheral surface the peripheral wall portion is bent from the periphery of the base, from the opening side end of the outer surface plate toward said base portion An inner surface plate and side flaps bent from both side ends of each of the outer surface plates ,
Between the outer surface plate and the inner surface plate that is substantially perpendicular to the outer surface plate and the base portion, the outer surface plate is curved in a convex shape and is inclined in a direction away from the inner surface plate toward the base portion from the end portion of the opening. Form a buffer part consisting of a space between ,
Adjacent one of the side surface flaps has a gusset portion formed by bending from the outer surface plate along the other side surface flap, and the gusset portion is surrounded by a curved fold line, and the end on the base portion side. Portion and the end portion on the side of the opening are formed in a leaf shape that is narrower than the central portion, and the other side surface flap is bent from the outer surface plate by a curved fold line and curved outward to be concave. The gusset portion of one of the side surface flaps and the outer surface of the other side surface flap along which the gusset portion extends are exposed between the outer surface plates . 2. The assembly box according to claim 1 , wherein a plane including an edge on the base side and an edge on the opening side of the outer surface plate is inclined with respect to the base. The assembly box according to claim 1 or 2 , wherein the base portion is formed in a rectangular shape, and the peripheral wall portions are formed on four sides of the base portion. The base portion is formed in a rectangular shape, the peripheral wall portion is formed on three sides of the base portion,
A peripheral wall plate continuously provided on one side where the peripheral wall part of the base is not formed, and a lid part continuously connected to an end portion of the peripheral wall plate on the opening side to open and close the opening are provided. The assembly box according to claim 1 or 2 , characterized in that.

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