JP3196868U - Multistage box - Google Patents

Abstract

A multi-stage box that can easily store a plurality of stored items and is easy to assemble. A multi-stage box is constituted by a single paper sheet, and includes an upper box, a lower box, and a lid. The upper box 10 is a box made in a rectangular parallelepiped shape with an open bottom surface, and the lower box 20 is a box made in a rectangular parallelepiped shape with an open top surface. The lid portion 30 functions as a lid on the upper surface of the lower box 20 and a bottom surface of the upper box 20. The lid 30 is disposed between the upper box 10 and the lower box 20, and the short plate long side 31 a of the lid 30 is connected to the lower side 11 of the rear surface of the upper box 10 (connecting portion 42). The short plate long side 31b is connected to the front upper side 21 of the lower box 20 (connecting portion 41). The lid portion 30 is rotatable about the connecting portion 41 and can open and close the opened upper surface of the lower box 20. The upper box 10 is rotatable about the connecting portion 42 and rotates to cover the lid portion 30. [Selection] Figure 1

Description

  The present invention relates to a multistage box in which boxes are stacked in multiple stages.

  Conventionally, the following confectionery boxes have been proposed as a two-stage storage box for storing food such as cake (see, for example, Patent Document 1). The confectionery box is composed of a back piece, a top piece, a bottom piece, and left and right pieces. The confectionery box is fixed by gluing the horizontal partition plate between the left and right pieces and the back piece. The vertical partition plate is glued and fixed to the horizontal partition plate, and the other end of the vertical partition plate is detachably attached to the upper surface piece or the bottom surface piece, and is further folded into the upper surface piece and the left and right pieces. A broken line is formed. And the cover piece provided in a row with the bottom piece is in a mode capable of opening and closing the front surface of the box body.

ACT 04-3922

  However, in the confectionery box, the box body constitutes five surfaces except for the front surface, and the lid piece can open and close the front surface of the box body. Therefore, the stored items can be put only from the side of the front surface side. . In addition, the confectionery box is a mode in which a partition plate is provided in the box to store a plurality of storage items. Therefore, it takes time to assemble the partition plate, and there is a problem that the manufacturing cost including the assembly cost increases. It was. Moreover, the said confectionery box cannot expand the content and magnitude | size of a box later.

  Then, an object of this invention is to provide the multistage box which can accommodate a some stored thing easily.

  In order to solve the above problems, the multistage box of the present invention is connected to each of the upper and lower boxes between a plurality of boxes stacked in order and the adjacent upper and lower boxes, and a connecting portion with the lower box is connected. And a lid that opens and closes as a lid on the upper surface of the lower box by the pivoting operation, and the upper box pivots on a connecting portion between the upper box and the lid. When the upper box is rotated, the upper box is stacked on the lower box. Thereby, the effect | action of accommodating a some stored article easily is brought about.

  Moreover, in the multistage box of the present invention, the plurality of boxes are constituted by a first box and a second box disposed below the first box, the first box, and the above Between the second box, the lower part of the first box and the upper part of the second box can be connected, and can be rotated around the connecting part with the second box. A first lid that opens and closes as a lid on the upper surface of the second box, and the first box is rotatable about a connecting portion between the first box and the first lid. When the first box is rotated, the first box is stacked on the second box. This brings about the effect | action that a several stored item is easily accommodated in a two-stage multistage box.

  In the multistage box of the present invention, the first box includes a first front plate portion, a first left and right side plate portion, a first rear plate portion, and an upper plate portion. Consists of a first paper box body that is connected through a wire and made in a rectangular parallelepiped shape with an open bottom, and the second box includes a second front plate portion and second left and right side plates. Part, a second rear surface plate portion, and a bottom surface plate portion are connected to each other via a crease line, and are formed by a second paper box body that is box-shaped in a rectangular shape with an open upper surface, the lid portion Is constituted by a rectangular plate having a shape that closes the upper surface of the second box, and one side of the rectangular plate is the lower side of the first front plate portion in the first paper box body, or the first rear plate portion. The other side of the second paper box body is connected to either one of the lower sides of the second paper box body, and the other side facing the one side of the rectangular plate is the second side of the second paper box body. One of the upper side of the front plate part or the upper side of the second rear plate part is connected via a crease line, and the first box, the second box, and the lid part are one piece. It is characterized by comprising a paper sheet. This brings about the effect of facilitating the assembly of a two-stage multi-stage box that can easily store a plurality of storage items.

  Further, in the multistage box of the present invention, between the third box, which is disposed below the second box and whose upper surface is open, the second box, and the third box, The lower part of the second box and the upper part of the third box are connected to each other and can be rotated around the connecting part with the third box. And a second lid portion that performs rotation of the second box about the connecting portion between the second box and the second lid portion. When moved, the second box is stacked on the third box. This brings about the effect | action that a several stored article is easily accommodated in a three-stage multistage box.

  Further, in the multistage box of the present invention, the third box is connected to the third box upper part, and can be rotated about the connecting part with the third box. A box unit comprising a second lid part that opens and closes as a lid on the upper surface of the third box, and the end of the second lid part of the box unit and the lower part of the second box are connected by a connecting means. The second box is pivotable about the coupling portion between the second box and the second lid, and when the second box is pivoted, the second box The boxes are stacked on the third box. This brings about the effect of easily expanding the number of steps of the box later.

  According to the present invention, an excellent effect that a plurality of stored items can be easily stored can be obtained.

It is a figure which shows the multistage box 100 in embodiment of this invention. It is a figure which shows the expanded view of the multistage box 100 in embodiment of this invention. It is a figure which shows the multistage box 300 in embodiment of this invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. The multistage box in the present invention is assumed to be constituted by a single paper sheet, and will be described below on the premise thereof, but is not limited thereto. That is, the multi-stage box of the present invention may be formed of a plurality of paper sheets, other materials such as resin, and combinations of various materials. In the present invention, the paper sheet includes all paper sheets including paper blanks.

  FIG. 1 is a diagram showing a multistage box 100 according to an embodiment of the present invention. FIG. 1A is a perspective view of the multistage box 100. FIG. 1B is a diagram in which the multistage box 100 is opened. The multistage box 100 includes an upper box 10, a lower box 20, and a lid 30.

  For example, the upper box 10 is assumed to be a box formed in a rectangular parallelepiped shape, but is not limited to this, and may be a box having another shape. The upper box 10 is assumed to have an open bottom surface. However, the upper box 10 is not limited to this, and may have a bottom surface and a closed bottom surface. A top / bottom port 16 with a handle is provided on the upper surface of the upper box 10. The handle entrance / exit port 16 has a structure that can be opened and closed. In addition, the structure of the upper surface of the upper box 10 is not limited to the above structure, and may be, for example, another openable / closable structure or a structure in which the entrance / exit is not at the top.

  For example, the lower box 20 is assumed to be a box formed in a rectangular parallelepiped shape, but is not limited thereto, and may be a box having another shape. The lower box 20 is assumed to have an aspect in which the upper surface 26 is opened. The lower box 20 is adjacent to the upper box 10 in the vertical direction, and is disposed on the lower side of the upper box 10.

  The lid portion 30 functions as a lid for the upper surface 26 of the lower box 20. For example, the lid 30 is assumed to be configured by the short plate 31 and the folded piece 32, but is not limited thereto. That is, in the present invention, the short plate 31 may be a member having any other shape as long as the upper surface 26 of the lower box 20 can be closed. Moreover, the aspect without the folding | turning piece 32 may be sufficient. The lid 30 is rotatable about a connecting portion 41 with the upper portion of the lower box 20 and can open and close the opened upper surface of the lower box 20.

  Specifically, the lid part 30 has the following mode. The lid 30 is disposed between the upper box 10 and the lower box 20, and one end (for example, the short plate long side 31 a) of the lid 30 is connected to the lower part of the upper box 10 (connecting portion 42). The other end of the portion 30 (for example, the short plate long side 31b) is connected to the upper portion of the lower box 20 (connecting portion 41). As shown in FIG. 1, for example, a rear lower side 11 of the upper box 10 is assumed as the lower part of the upper box 10. In this case, as shown in FIG. 1, for example, a front upper side 21 of the lower box 20 is assumed as an upper part of the lower box 20.

  The lower part of the upper box 10 may be, for example, the lower front side 12 of the upper box 10. In this case, as the upper part of the lower box 20, for example, the rear upper side 22 of the lower box 20 is assumed. Further, the lower part of the upper box 10 may be, for example, the left side lower side 13 of the upper box 10. In this case, for example, a right side upper side 23 of the lower box 20 is assumed as an upper part of the lower box 20. Further, the lower portion of the upper box 10 may be, for example, the lower right side 14 of the upper box 10. In this case, as the upper part of the lower box 20, for example, the left side upper side 24 of the lower box 20 is assumed. That is, the lower side of the upper box 10 and the upper side of the lower box 20 are preferably the upper side and the lower side on the surfaces facing each other.

  As shown in FIG. 1, when the bottom surface of the upper box 10 is open, the short plate 31 of the lid 30 also serves as the bottom surface of the upper box 10. Further, the upper box 10 has a structure that can rotate around a connecting portion 42 with the lid 30. When the upper box 10 is rotated, the upper box 10 is placed on the lower box 20 in a stacked state.

  Therefore, when storing an object in the multistage box 100, first, an object is stored in the lower box 20, and then the upper surface of the lower box 20 is closed by the lid 30. Next, after placing an object on the lid 30, the upper box 10 is rotated to cover the object placed on the lid 30 so as to cover the upper box 10. The upper box 10 as shown in FIG. Finally, a seal or the like is put on the joint between the upper box 10 and the lower box 20 so that the upper box 10 does not open from the lower box 20.

  Alternatively, when an object is stored in the multistage box 100, first, an object is stored in the lower box 20, and then the upper surface of the lower box 20 is closed with the lid portion 30. Next, the upper box 10 is rotated and covered so as to cover the upper box 10 from the top of the lid 30, and the upper box 10 as shown in FIG. 1A is stacked on the lower box 20. To. Next, after the upper surface of the upper box 10 is opened from the loading / unloading port 16 with the handle of the upper box 10, an object is put into the upper box 10, and an object is placed on the lid portion 30 so that the upper surface of the upper box 10 is close up. Finally, a seal or the like is put on the joint between the upper box 10 and the lower box 20 so that the upper box 10 does not open from the lower box 20.

  When the upper box 10 is stacked on the lower box 20, as shown in FIG. 1, at the joint between the upper box 10 and the lower box 20, A configuration that covers the belt-like portion 25 at the top of the lower box 20 is assumed as an example. It is suitable for eliminating gaps at joints. In such a configuration, when the lid portion 30 is closed, the side 32 a of the folded piece 32 that forms a part of the lid portion 30 comes into contact with the upper rear side 22 of the lower box 20. Then, the folded piece 32 is folded downward with the side 32a as an axis, and the upper box 10 is folded upward with the side 32b of the folded piece 32 as an axis. Thereby, the upper box 10 can be stacked on the lower box 20 in a mode in which the band-shaped part 15 is covered with the band-shaped part 25. The configuration is not limited to the above-described configuration, and a configuration in which the strip portion 15 does not cover the strip portion 25 may be used.

  The multi-stage box 100 as described above can be stored in the lower box 20 by storing the stored items from the wide upper surface of the opened opening, and stored in the upper box 10 in the lid 30 as the bottom surface. There is an effect that it is possible to easily store a plurality of stored items, such as putting on the upper box after placing an object (or storing from the loading / unloading port 16 with handle).

  FIG. 2 is a development view of the multistage box 100 in the embodiment of the present invention. The multi-stage box 100 according to the embodiment of the present invention is assumed to be configured from one paper sheet as an example, and the multi-stage box 100 configured from one paper sheet will be described below. It is not limited, and other configurations may be used.

  The multi-stage box 100 is formed by assembling a paper sheet 200 as shown in FIG. The paper sheet 200 is composed of portions corresponding to the upper box 10, the lid 30, and the lower box 20 in order from the top.

  In the portion corresponding to the upper box 10, the left side plate 211, the front plate 212, the right side plate 213, the rear side plate 214, and the adhesive margin piece 215 are arranged through the crease lines 241, 242, 243, and 244 in order from the left in FIG. It is connected continuously. Further, strips 215a, 215b, 215c, and 215d constituting the strip-shaped portion 15 described in FIG. 1 are provided below the left side plate 211, the front plate 212, the right side plate 213, and the rear plate 214, respectively. Note that the horizontal portions of the strips 215c and 215d are not connected to each other at the crease line 243. The lateral portions of the other strips 215a, 215b, and 215c may or may not be connected to the crease lines 241 and 242, respectively.

  In addition, on the upper portions of the front plate 212 and the rear plate 214, there are provided handle entry / exit pieces 216a and 216b that constitute the handle entry / exit portion 16 described in FIG. 1 via crease lines 245 and 246, respectively. . In addition, tongue pieces 211a and 213a are provided on upper portions of the left side plate 211 and the right side plate 213 through crease lines 247 and 248, respectively.

  In the above, the left side plate 211 and a group of tongue pieces 211a and strips 215a connected to the left side plate 211 are referred to as left side plate portions. The left side plate portion includes other known elements not described in this specification. In the above description, the front plate 212 and a group of strips 215b connected to the front plate 212 are referred to as front plate portions. The front plate portion includes other known elements that are not described in this specification. In the above, the right side plate 213 and a group of tongue pieces 213a and strips 215c connected to the right side plate 213 are referred to as right side plate portions. The right side plate portion includes other known elements not described in the present specification. In the above, a group of the rear plate 214 and the paste margin piece 215 and the strip 215d connected to the rear plate 214 is referred to as a rear plate portion. The rear plate portion includes other known elements not described in the present specification. In the above description, a group of handle entry / exit mouth pieces 216a and 216b constituting the handle entry / exit port portion 16 is referred to as an upper surface plate portion. The upper surface plate portion includes other known elements not described in the present specification. The above applies as much as possible in the following description.

  The left box 221, the front plate 222, the right side plate 223, the rear plate 224, and the adhesive margin piece 225 are arranged through the crease lines 251, 252, 253, and 254 in order from the left in FIG. It is connected continuously. In addition, bottom plates 226 and 227 are provided below the front plate 222 and the rear plate 224 via crease lines 255 and 256, respectively. In addition, tongue pieces 221a and 223a are provided below the left side plate 221 and the right side plate 223 through crease lines 257 and 258, respectively.

  In the above description, a group of the bottom plates 226 and 227 is referred to as a bottom plate portion. The bottom plate portion includes other known elements that are not described in this specification.

  A portion corresponding to the lid portion 30 includes a short plate 231, tongue pieces 231 a and 231 b, and a folded piece 232. Among them, the short plate 231 and the folded piece 232 are connected via the crease line 261. The short plate 231 is connected to the rear plate 224 via a crease line 262. In addition, tongue pieces 231a and 231b are provided on the left and right sides of the short plate 231 via crease lines 263 and 264, respectively. Further, the folded piece 232 is connected to the band piece 215 d through the crease line 265.

  Next, a method for assembling the multistage box 100 using the paper sheet 200 will be described. The portion corresponding to the upper box 10 will be described. The left side plate 211, the front plate 212, the right side plate 213, the rear plate 214, and the glue margin piece 215 are bent at approximately 90 degrees along the crease lines 241, 242, 243, and 244, respectively. Then, the left side plate 211 and the adhesive margin piece 215 are bonded. Thereby, the cylindrical part of the upper box 10 surrounding four sides is completed.

  Next, the tongue pieces 211a and 213a are bent approximately 90 degrees toward the inside of the tubular portion along the crease lines 247 and 248, respectively. Then, the take-in / out mouthpieces 216a and 216b with handles are bent approximately 90 degrees toward the inside of the cylindrical portion along the crease lines 245 and 246, respectively, and are put on the tongue pieces 211a and 213a, and the upper surface of the upper box 10 is closed. Then, the handle portions 216c and 216d are bent up along the crease lines 249a and 249b, respectively, so as to stand upright. And in order to fix the state which closed the upper surface of the upper box 10, the insertion tongue piece 216e of the insertion / exit mouthpiece piece 216a with a handle is inserted in the notch piece 216f of the entrance / exit mouthpiece piece 216b with a handle. Thereby, the upper box 10 is completed.

  Next, a portion corresponding to the lower box 20 will be described. The left side plate 221, the front plate 222, the right side plate 223, the rear plate 224, and the glue margin piece 225 are bent at approximately 90 degrees along crease lines 251, 252, 253, and 254, respectively. Then, the left side plate 221 and the adhesive margin piece 225 are bonded. Thereby, the cylindrical part of the lower box 20 surrounding four sides is completed. Then, the tongue pieces 221a and 223a are bent toward the inside of the cylindrical portion along the crease lines 257 and 258, and the bottom plates 226 and 227 are bent along the crease lines 255 and 256 and placed on the tongue pieces 221a and 223a. In such a state, the bottom plates 226 and 227 are fixed with, for example, a seal or tape. Thereby, the lower box 20 is completed.

  When the upper box 10 and the lower box 20 are assembled as described above, a state as shown in FIG. Next, a portion corresponding to the lid 30 will be described. First, the tongue pieces 231a and 231b provided on the left and right sides of the short plate 231 are bent by approximately 90 degrees along the crease lines 263 and 264 (upwardly in the vertical direction of the paper). Then, the short plate 231 is rotated about the connecting portion 41 in the direction to close the upper surface 26 of the lower box 20. Next, the folded piece 232 is bent toward the lower box 20 along the crease line 261. Then, the upper box 10 is folded back upward along the crease line 265. As a result, the upper box 10 is rotated about the connecting portion 42 (fold line 265) so as to close the inside of the lower box 20. When the upper box 10 is stacked on the lower box 20, the state shown in FIG.

  As described above, if the multi-stage box 100 can be formed from one paper sheet 200, an excellent effect that the multi-stage box can be easily assembled is obtained.

  FIG. 3 is a diagram showing a multistage box 300 according to the embodiment of the present invention. The multi-stage box 300 is obtained by adding a single-stage box to the multi-stage box 100. More specifically, the multi-stage box 300 is obtained by adding a middle-stage box 310 between the upper box 10 and the lower box 20. Since the configuration other than the middle box 310 is substantially the same as that of the multi-stage box 100, the description thereof is omitted. 3A is a perspective view of the multi-stage box 300. FIG. FIG. 3B is a perspective view in which the multistage box 300 is opened. FIG. 3C is a development view of the multistage box 300.

  As shown in FIGS. 3A and 3B, the middle box 310 is assumed to be a box formed in a rectangular parallelepiped shape, for example, but is not limited to this, and is a box of another shape. There may be. The middle box 310 is assumed to have an open top surface, but the bottom surface may be either closed or open.

  The portion corresponding to the middle box 310 is shown in the developed view of FIG. 3 (c). Like the upper box 10 and the lower box 20, the left side plate 311, the front plate 312, the right side plate 313, the rear plate 314, Adhesive strips 315 are connected to each other through respective crease lines 321, 322, 323, and 324. Further, four strips 315a, 315b, 315c, and 315d constituting the strip-like portions described in FIG. 1 are provided at the lower portions of the left side plate 311, the front plate 312, the right side plate 313, and the rear plate 314, respectively. This is the same as the strip in the upper box 10.

  The middle box 310 is connected to the two lid portions 30a and 30b on the upper side and the lower side. In relation to the upper box 10 on the upper side of the middle box 310, the middle box 310 performs the same role and function as the lower box 20 shown in FIG. Therefore, in this case, the description for the lower box 20 made in the description of FIG.

  Further, in the relationship with the lower box 20 on the upper side of the middle box 310, the middle box 310 performs the same role and function as the upper box 10 shown in FIG. Therefore, in this case, the description for the upper box 10 in the description of FIG. 1 (except for the handle-attached inlet / outlet pieces 216a and 216b) can be applied to the middle box 310 as it is.

  The above description assumes that the multi-stage box 300 is composed of one paper sheet as shown in FIG. However, the multistage box 300 may be composed of a plurality of paper sheets. That is, the box unit which is a lower box with a lid in which the lid portion 30 and the lower box 20 shown in FIGS. 1 and 2 are integrated is attached to the lower side of the lower box 20 of the multi-stage box 100 later and the multi-stage box. 300 may be formed. In this case, a connecting means capable of connecting the tip end portion of the lid of the box unit may be separately provided on the bottom surface of the lower box 20.

  As a connecting means for connecting the tip of the lid in the box unit to the bottom surface of the lower box 20, for example, a configuration in which the tip of the lid is glued to the bottom surface of the lower box 20 and fixed by tape, a seal or the like is assumed as an example. . Further, as the connecting means, for example, a notch piece is provided on the bottom surface of the lower box 20, an insertion tongue piece is provided at the tip of the lid, the insertion tongue piece is inserted into the notch piece, and the tip of the lid in the box unit is lowered. The structure connected with the bottom face of the box 20 is also assumed as an example. However, the connecting means is not limited to the above configuration, and may have other configurations. If it carries out like this, the multistage box of this invention can be expanded to the box stacked | stacked more than 3 stages | stages later as needed.

  If it is set as the above structures, the multistage box of the present invention can be expanded to a box in which three or more stages are stacked later if necessary.

  The embodiment of the present invention shows an example for embodying the present invention, and the present invention is not limited to this. Various modifications can be made without departing from the scope of the present invention. .

  As an application example of the present invention, for example, an application example can be given as a multistage storage box such as a cake or other sweets or a strawberry pack.

DESCRIPTION OF SYMBOLS 10 Upper box 11 Lower back side 12 Front lower side 13 Left side lower side 14 Right side lower side 15, 25 Belt-like part 16 Outlet part with handle 20 Lower box 21 Front upper side 22 Rear upper side 23 Right side upper side 24 Left side Upper surface side 30, 30a, 30b Lid 31, 231 Short plate 31a Short plate long side 31b Short plate long side 32, 232 Folding piece 41, 42 Connection part 100, 300 Multistage box 200 Paper sheet 211, 221 311 Left side plate 211a, 213a, 221a, 223a, 231a, 231b Tongue piece 212, 222, 312 Front plate 213, 223, 313 Right side plate 214, 224, 314 Rear plate 215, 225, 315 Adhesive strip 215a, 215b, 215c, 215d, 315a, 315b, 315c, 315d strips 216a, 2 6b Entrance / exit piece with handle 216c, 216d Handle part 216e Insertion piece 216f Notch piece 226, 227 Bottom plate 241, 242, 243, 244, 245, 246, 247, 248, 249a, 249b, 251, 252, 252, 254 255, 256, 257, 258, 261, 262, 263, 264, 265, 321, 322, 323, 324 Crease line 310 Middle box

Claims (5)

Multiple boxes stacked in sequence,
Connected to each of the upper and lower boxes between adjacent upper and lower boxes, and can be pivoted around the connecting portion with the lower box, and opened and closed as a lid on the upper side of the lower box by the pivoting operation. And a lid for performing
The upper box is rotatable about the connecting portion between the upper box and the lid, and when the upper box is rotated, the upper box is placed on the lower box. Multi-stage box characterized by being stacked. The plurality of boxes are:
The first box,
A second box disposed below the first box,
Between the first box and the second box, the lower part of the first box and the upper part of the second box are connected, and the connecting part with the second box is pivotable. And a first lid portion that opens and closes as a lid on the upper surface of the second box by its rotating operation,
The first box is rotatable about a connecting portion between the first box and the first lid, and when the first box is rotated, the first box is The multi-stage box according to claim 1, wherein the multi-stage box is stacked on a second box. The first box includes a first front plate portion, a first left and right side plate portion, a first rear plate portion, and an upper plate portion, which are continuously provided through crease lines, respectively. Consists of a first paper box body made in a rectangular parallelepiped shape with the bottom open,
The second box has a second front plate portion, a second left and right side plate portion, a second rear plate portion, and a bottom plate portion connected through a crease line, respectively, Consists of a second paper box body made in an open rectangular parallelepiped shape,
The lid portion is constituted by a short plate that closes the upper surface of the second box, and one side of the short plate is a lower side of the first front plate portion in the first paper box body, or a first One of the lower sides of the rear plate part is connected via a crease line, and the other side facing the one side of the rectangular plate is the upper side of the second front plate part in the second paper box body, or It is connected with either one of the upper sides of the second rear plate part via a crease line,
The multi-stage box according to claim 2, wherein the first box, the second box, and the lid portion are configured by a single paper sheet. A third box disposed below the second box and having an open top surface;
Between the second box and the third box, the lower part of the second box and the upper part of the third box are connected, and the connecting part with the third box is pivotable. And a second lid portion that opens and closes as a lid on the upper surface of the third box by its rotation operation,
The second box is rotatable about a connecting portion between the second box and the second lid, and when the second box is rotated, the second box is moved to the second box. The multi-stage box according to claim 2, wherein the multi-stage box is stacked on a third box. A third box,
A second lid portion that is connected to the upper portion of the third box and is rotatable about a connection portion with the third box, and that opens and closes as a lid on the upper surface of the third box by the rotation operation. A box unit consisting of
The end of the second lid portion of the box unit and the lower portion of the second box are connected by connecting means,
The second box is rotatable about a connecting portion between the second box and the second lid, and when the second box is rotated, the second box is moved to the second box. The multi-stage box according to claim 2, wherein the multi-stage box is stacked on a third box.

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