JP2006335364A - Box body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box body capable of withstanding a sufficient load only by cutting a planar plate and folding it along folding lines. <P>SOLUTION: In the box formed of a bottom plate and a plurality of sidewalls into a polygon by cutting and folding the planar plate, slanting lines (Aa-Ad) for folding on slant four corners (Ca, Cb, Cc and Cd) formed of adjacent ends of the four sidewalls (10a, 20, 10b and 40) connected with the bottom plate (15) are formed on the bottom plate (15), forming triangular corner members (13a-13d) having each of the slanting lines (Aa-Ad) as one side. Corner members (13a-13d) are folded along the slanting lines (Aa-Ad) to overlie on the bottom plate (15) to double the bottom plate (15) at the corners (Ca, Cb, Cc and Cd) for improving buckling strength. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

自立性のある材料例えば段ボール、厚紙、プラスチック板の平板体を切り抜き折り曲げて被収納物を収納するための箱体に関し、特に例えば自動車のディスクブレーキのホイールやエアクリーナのような円形の被収容体を収容するための箱体に関する。   It relates to a box for storing materials to be stored by cutting and folding flat plates of cardboard, cardboard, plastic plates, such as self-supporting materials, and in particular, circular containers such as wheels and air cleaners of automobile disk brakes. It relates to a box for housing.

物品を収容するために折りたたんで形成する箱体は種々知られ、開示されている（例えば特許文献１及び２参照）。
一般的に、箱体は中空角柱状をしており、被収容体を収容して積上げる場合に箱体の側壁を形成する側板が座屈しない荷重以上の積み重ねは出来ない。また、積上げた状態でホークや車両で運搬する場合には単なる静荷重以上の上下荷重に耐える必要もあって積み重ね段数の制限を配慮する必要がある。 Various box bodies formed by folding to accommodate articles are known and disclosed (see, for example, Patent Documents 1 and 2).
Generally, the box is in the shape of a hollow prism, and when the objects to be accommodated are accommodated and stacked, the side plates forming the side walls of the box cannot be stacked beyond a load that does not buckle. In addition, when transported by a fork or vehicle in a stacked state, it is necessary to withstand a vertical load that is more than a mere static load, and it is necessary to consider the limitation on the number of stacked stages.

箱体の積上げ荷重を向上させるために公知技術では側壁、特に側壁のコーナー部に格別の手段を設けて座屈荷重に耐えるようにしている。
したがって、公知技術では平板体を切り抜いて折り曲げ線に沿って曲折して形成する箱体には適用できない欠点がある。
特開２００２−２６５７号公報 特開２００３−１０４３６７号公報 In order to improve the stacked load of the box, in the known technique, special means are provided at the side wall, particularly at the corner portion of the side wall so as to withstand the buckling load.
Therefore, the known technique has a drawback that it cannot be applied to a box formed by cutting a flat plate and bending it along a folding line.
JP 2002-2657 A JP 2003-104367 A

本発明は上述した従来技術の問題点に鑑みて提案されたものであり、従って本発明の目的は、平板体を切り抜いて折り曲げ線に沿って曲折するだけで充分な荷重に耐えることのできる箱体を提供するにある。   The present invention has been proposed in view of the above-mentioned problems of the prior art. Accordingly, the object of the present invention is to provide a box capable of withstanding a sufficient load by simply cutting out a flat plate and bending it along a fold line. To provide the body.

本発明によれば、切り抜いた平板体を折り曲げて底板と複数の側壁とで多角形に形成する箱体において、その底板１５に接続する第１〜第４の４つの側壁１０ａ、２０、１０ｂ、４０の端部が隣り合って形成する４つのコーナー部Ｃａ、Ｃｂ、Ｃｃ、Ｃｄを斜めに折り曲げるための斜めの線Ａａ〜Ａｄが底板１５に設けられ、その各斜めの線Ａａ〜Ａｄとその斜めの線Ａａ〜Ａｄの一方の第１の端部８ａ〜８ｄに連結して延びる第１の内向き折り曲げ線Ｆａ〜Ｆｄとその第１の内向き折り曲げ線Ｆａ〜Ｆｄの第２の端部１５ａ〜１５ｄとその第２の端部１５ａ〜１５ｄと前記斜めの線Ａａ〜Ａｄの他方の第３の端部２０ａ〜２０ｄを連結する第２の内向き折り曲げ線Ｂａ〜Ｂｄとで３角形のコーナー部材１３ａ〜１３ｄを形成しており、そのコーナー部材１３ａ〜１３ｄは折り曲げられて底板１５の上に重ねられるように形成されており、そのコーナー部材１３ａ〜１３ｄの第１の内向き折り曲げ線Ｆａ〜Ｆｄで連続する４つの内向き側板１２ａ〜１２ｄは底板１５に対し直角に折り曲げられており、前記第１の端部８ａ〜８ｄのうち第１のコーナー部Ｃａの端部８ａと第２のコーナー部Ｃｂの端部８ｂを連結する第２の折り曲げ線Ｅ２を介して第２の側壁２０が連続しており、前記第１の端部８ａ〜８ｄのうち第３のコーナー部Ｃｃの端部８ｃと第４のコーナー部Ｃｄの端部８ｄを連結する第４の折り曲げ線Ｅ４を介して第４の側壁４０が連続しており、また前記第１の端部８ａ〜８ｄに連結して底板１５から直角に立ち上がる折り曲げ線Ｄａ〜Ｄｄのうち第１のコーナー部Ｃａの折り曲げ線Ｄａと第２のコーナー部Ｃｂの折り曲げ線Ｄｂとを介して第１及び第２の内向き側板１２ａ、１２ｂがそれぞれ第２の側壁２０に連続しており、前記折り曲げ線Ｄａ〜Ｄｄのうち第３のコーナー部Ｃｃの折り曲げ線Ｄｃと第４のコーナー部Ｃｄの折り曲げ線Ｄｄとを介して第３及び第４の内向き側板１２ｃ、１２ｄがそれぞれ第４の側壁４０に連続しており、底板１５のコーナー部材１３ａ〜１３ｄの第３の端部２０ａ〜２０ｄのうち第１のコーナー部材１３ａの第３の端部２０ａと第４のコーナー部材１３ｄの第３の端部２０ｄとを連結する第１の折り曲げ線Ｅ１には第１の側壁１０ａが接続され、第２のコーナー部材１３ｂと第３のコーナー部材１３ｃの第３の端部２０ｂ、２０ｃとを連結する第３の折り曲げ線Ｅ３には第３の側壁１０ｂが接続され、前記第１の側壁１０ａに設けられた第３の端部２０ａ、２０ｄから延びる折り曲げ線１７ａ、１７ｄを介して第１の側壁１０ａの両側に内向き側板１４ａ、１４ｄが接続され、前記第３の側壁１０ｂに設けられた第３の端部２０ｂ、２０ｃから延びる折り曲げ線１７ｂ、１７ｃを介して第３の側壁１０ｂの両側に内向き側板１４ｂ、１４ｃが接続され、それらの各内向き側板１４ａ〜１４ｄはそれぞれコーナー部材１３ａ〜１３ｄの内向き折り曲げ線Ｂａ〜Ｂｄと接続されている。
上記のコーナー部の斜めの線によって４つのコーナー部が箱体の内側に折り曲げられ、斜めの線を一辺とする３角形のコーナー部材が箱体内部に２重底を形成してコーナー部の強度を向上させて、箱体としての座屈強度の向上を図っている。 According to the present invention, in a box that is formed by polygonalizing a bottom plate and a plurality of side walls by bending a cut flat plate body, the first to fourth side walls 10a, 20, 10b connected to the bottom plate 15 are provided. Diagonal lines Aa to Ad for obliquely bending four corner portions Ca, Cb, Cc, and Cd formed by adjacent end portions of 40 are provided on the bottom plate 15, and each of the oblique lines Aa to Ad and its First inward fold lines Fa to Fd that extend in connection with one of the first ends 8a to 8d of the diagonal lines Aa to Ad and second ends of the first inward fold lines Fa to Fd 15a to 15d, second end portions 15a to 15d thereof, and second inward folding lines Ba to Bd connecting the other third ends 20a to 20d of the diagonal lines Aa to Ad. Corner members 13a to 13d are formed, The inner members 13a to 13d are formed so as to be folded and stacked on the bottom plate 15, and the four inward side plates 12a to 12a continuous with the first inward folding lines Fa to Fd of the corner members 13a to 13d. 12d is bent at right angles to the bottom plate 15, and the second end portion 8a to 8d of the first end portion 8a to 8d is connected to the end portion 8b of the second corner portion Cb. The second side wall 20 is continuous via the fold line E2 of the first end portions 8a to 8d, and the end portion 8c of the third corner portion Cc and the end portion 8d of the fourth corner portion Cd. The fourth side wall 40 is continuous via a fourth fold line E4 that connects the first and second end portions 8a to 8d, and the fold lines Da to Dd rise from the bottom plate 15 at a right angle. First corner section Ca The first and second inward side plates 12a and 12b are respectively connected to the second side wall 20 via the fold line Da and the fold line Db of the second corner portion Cb, and the fold lines Da to Dd Among them, the third and fourth inward side plates 12c and 12d are respectively connected to the fourth side wall 40 via the fold line Dc of the third corner portion Cc and the fold line Dd of the fourth corner portion Cd. Among the third end portions 20a to 20d of the corner members 13a to 13d of the bottom plate 15, the third end portion 20a of the first corner member 13a and the third end portion 20d of the fourth corner member 13d are connected. The first fold line E1 is connected to the first side wall 10a, and the third fold line E3 connecting the second corner member 13b and the third end portions 20b and 20c of the third corner member 13c. Is the third Side walls 10b are connected, and inward side plates 14a, 14d are provided on both sides of the first side wall 10a via bending lines 17a, 17d extending from third end portions 20a, 20d provided on the first side wall 10a. Inwardly connected side plates 14b, 14c are connected to both sides of the third side wall 10b via bend lines 17b, 17c extending from third ends 20b, 20c provided on the third side wall 10b. The inward side plates 14a to 14d are connected to the inward fold lines Ba to Bd of the corner members 13a to 13d, respectively.
The four corners are folded inside the box by the diagonal lines of the above corner, and the triangular corner member with the diagonal line as one side forms a double bottom inside the box, thereby strengthening the corners. To improve the buckling strength of the box.

前記箱体に天井部３５を設け、第４の側壁４０の反対側のその天井部３５の端部に折り曲げ線Ｅ７で連続する差込板６０を設け、底板１５に接続する側壁２０の上部にその差込板６０が差込まれるスリット２１ｓが形成されていることが好ましい。
天井部の端部を側壁の天部へ差込むことによって、無接着でも天井板、側壁、床板の位置きめと組立がなされる。 The box body is provided with a ceiling portion 35, and an insertion plate 60 is provided at the end of the ceiling portion 35 on the opposite side of the fourth side wall 40 along the fold line E 7. It is preferable that a slit 21s into which the insertion plate 60 is inserted is formed.
By inserting the end portion of the ceiling portion into the top portion of the side wall, the ceiling plate, the side wall, and the floor plate can be positioned and assembled without bonding.

前記箱体に天井部３５を設け、その天井部３５に接続する側壁２０の端部がコーナー部に屏風状に折れ重なった重複壁面４３、４４、４６、４７を形成していることが好ましい。
重複壁面は天井部に連続する側壁に限らず底板に連続する側壁に形成してもよい。 It is preferable to provide the ceiling part 35 in the said box, and to form the overlapping wall surface 43, 44, 46, 47 which the edge part of the side wall 20 connected to the ceiling part 35 folded in the corner part at the folding screen shape.
The overlapping wall surface may be formed not only on the side wall continuing to the ceiling part but on the side wall continuing to the bottom plate.

以上の構成による本発明によれば、
（ａ） コーナー部を斜めの線で折り曲げて、その斜めの線を一辺とする３角形のコーナー部材でコーナー部の底板に２重底を形成しているのでコーナー部の強度が向上し箱体としての座屈強度が向上して積み重ね段数が増加する利点がある。
（ｂ） コーナー部が斜めの線で折り曲げているので箱体としての容量が減少し、箱体収容容積が減少する利点がある。
（ｃ） 天井部の端部を折り曲げて側壁の天部に差込むようにすれば、無接着で天井部、側壁、床板のきっちりした位置きめと組立がなされ、一体形状の箱体となって強度が確保され、積み重ね段数が増加できる利点がある。
（ｄ）側壁のコーナーは側壁が屏風状に折れ重なった重複壁面にすれば、コーナーでの耐座屈断面積をさらに増加させて積み重ね強度がさらに増加して一層の積み重ね段数が増加できる利点がある。
（ｅ） 平板体を切り抜き折り曲げてかつ無接着で箱体を作成するので、再使用可能な利点がある。 According to the present invention having the above configuration,
(A) Since the corner portion is bent with an oblique line and a double bottom is formed on the bottom plate of the corner portion with a triangular corner member having the oblique line as one side, the strength of the corner portion is improved and the box body There is an advantage that the buckling strength is improved and the number of stacked stages is increased.
(B) Since the corner portion is bent along an oblique line, there is an advantage that the capacity of the box is reduced and the capacity of the box is reduced.
(C) If the end part of the ceiling part is bent and inserted into the top part of the side wall, the ceiling part, the side wall, and the floorboard are firmly positioned and assembled without bonding, resulting in an integral box. There is an advantage that the strength is secured and the number of stacked stages can be increased.
(D) If the corners of the side walls are overlapped walls with the side walls folded in a folding screen, the buckling cross-sectional area at the corners can be further increased to further increase the stacking strength and increase the number of stacking steps. is there.
(E) Since a flat body is cut out and bent and a box body is created without adhesion, there is an advantage that it can be reused.

本発明をディスクブレーキのホイールやエアクリーナーを収容する場合についての箱体の一実施形態を示す図であり、図を参照して説明する。
６面体の箱体１を構成するために切り抜いた平板体を折り曲げる態様は後述するが、図１において折り曲げ前の展開図について説明する。
平板体１Ｚの材質は本例では公知市販の３ｍｍ厚さの段ボール（例えば商品名称Ｋ１８０Ｂ）で形成している。 BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the box about the case where the wheel and air cleaner of a disc brake are accommodated, and this invention is demonstrated with reference to figures.
Although the aspect which bend | folds the flat plate cut out in order to comprise the hexahedron box 1 is mentioned later, the expanded view before bending is demonstrated in FIG.
In this example, the flat plate 1Z is made of a commercially available cardboard having a thickness of 3 mm (for example, product name K180B).

図１において、平板体１Ｚは箱体１の底部を構成する底板１５と、天井部を構成する天井板３５と、側壁部を構成する後記で詳細説明をする底板に接続する第１〜第４の側板１０ａ、２０、１０ｂ、４０と天井板に接続する第５、第６の側板５０ａ、５０ｂとで形成され、図１内に記載の縦の中央軸Ｙ−Ｙに対して対称に形成されている。   In FIG. 1, a flat plate 1 </ b> Z is connected to a bottom plate 15 that constitutes the bottom of the box 1, a ceiling plate 35 that constitutes a ceiling, and a bottom plate that will be described in detail later that constitutes a side wall. The side plates 10a, 20, 10b, 40 and the fifth and sixth side plates 50a, 50b connected to the ceiling plate are formed symmetrically with respect to the vertical central axis YY shown in FIG. ing.

箱体１の底部を構成する底板１５と図１における左部の第１の側板１０ａとは第１の側板１０ａを折り曲げるための第１の折り曲げ線Ｅ１によって接続され、底板１５と図１における下部の第２の側板２０とは第２の側板２０を折り曲げるための第２の折り曲げ線Ｅ２によって接続されている。
底板１５と図１における右部の第３の側板１０ｂとは第３の側板１０ｂを折り曲げるための第３の折り曲げ線Ｅ３によって接続され、底板１５と図１における中上部の第４の側板４０とは第４の側板４０を折り曲げるための第４の折り曲げ線Ｅ４によって接続されている。以降、図１における上、下、左、右は単に上、下、左、右と略記する。 The bottom plate 15 constituting the bottom of the box 1 and the left first side plate 10a in FIG. 1 are connected by a first fold line E1 for folding the first side plate 10a, and the bottom plate 15 and the lower portion in FIG. The second side plate 20 is connected by a second folding line E2 for folding the second side plate 20.
The bottom plate 15 and the right third side plate 10b in FIG. 1 are connected by a third fold line E3 for folding the third side plate 10b, and the bottom plate 15 and the middle upper fourth side plate 40 in FIG. Are connected by a fourth folding line E4 for folding the fourth side plate 40. Hereinafter, the upper, lower, left, and right in FIG. 1 are simply abbreviated as upper, lower, left, and right.

これから説明する各コーナー部において、同形状の説明の繰り返しを簡素化するために、第１、第２、第３、第４の各コーナー部で使用する各符合に添字をａ、ｂ、ｃ、ｄを付けて表すことにする。
第１のコーナー部Ｃａにおいて、底板１５の第１の折り曲げ線Ｅ１と第２の折り曲げ線Ｅ２とは第１の折り曲げ線Ｅ１の下端部の交点２０ａと第２の折り曲げ線Ｅ２の左端部の交点８ａを接続する斜めの線の第１の折り曲げ線Ａａによって接続している。 In each corner portion to be described, in order to simplify the repetition of the description of the same shape, a suffix is added to each symbol used in each of the first, second, third, and fourth corner portions. It will be expressed with d.
In the first corner portion Ca, the first fold line E1 and the second fold line E2 of the bottom plate 15 are the intersection of the lower end portion 20a of the first fold line E1 and the left end portion of the second fold line E2. They are connected by a first fold line Aa which is an oblique line connecting 8a.

第２、第３、第４のコーナー部Ｃｂ、Ｃｃ、Ｃｄについては第１の折り曲げ線Ｅ１と第２の折り曲げ線Ｅ２を、第２の折り曲げ線Ｅ２と第３の折り曲げ線Ｅ３、第３の折り曲げ線Ｅ３と第４の折り曲げ線Ｅ４、第４の折り曲げ線Ｅ４と第１の折り曲げ線Ｅ１に読み替えれば、第２、第３、第４の折り曲げ線Ａｂ、Ａｃ、Ａｄは、上記第１の第１の折り曲げ線Ａａの添字をａに読み替えるだけで実質的に同じである。   For the second, third, and fourth corner portions Cb, Cc, and Cd, the first fold line E1 and the second fold line E2 are replaced with the second fold line E2, the third fold line E3, and the third fold line E3. If read as fold line E3 and fourth fold line E4, fourth fold line E4 and first fold line E1, the second, third and fourth fold lines Ab, Ac, Ad are This is substantially the same by simply replacing the subscript of the first fold line Aa with a.

第１の側板１０ａは、右端を第１の折り曲げ線Ｅ１と、左端を第１の折り曲げ線Ｅ１に平行な縁線３５ａと、上端を第１の側板１０ａの第２の内側板１４ｄを折り曲げるための折り曲げ線１７ｄと、下端を第１の側板１０ａの第１の内側板１４ａを折り曲げるための折り曲げ線１７ａと、に囲まれた４角形に形成されている。   The first side plate 10a is configured to bend the first fold line E1 at the right end, the edge line 35a parallel to the first fold line E1 at the left end, and the second inner plate 14d of the first side plate 10a at the upper end. Is formed into a quadrangle surrounded by a fold line 17d and a fold line 17a for folding the first inner plate 14a of the first side plate 10a at the lower end.

そして、折り曲げ線１７ａで第１の内側板１４ａに接続され、折り曲げ線１７ｄで第２の内側板１４ｄに接続されている。
第３の側板１０ｂは、第１の側板１０ａの右端を縁線３５ａに、左端を第３の折り曲げ線Ｅ３に読み替え、他の符合の添字ａをｃに読み替えるだけで実質的に同じである。 And it is connected to the 1st inner side board 14a by the fold line 17a, and is connected to the 2nd inner side board 14d by the fold line 17d.
The third side plate 10b is substantially the same except that the right end of the first side plate 10a is read as the edge line 35a, the left end is read as the third fold line E3, and the subscript a of the other symbols is read as c.

第１の側板１０ａに接続する第１の内側板１４ａは、上端を折り曲げ線１７ａと、下端を第２の折り曲げ線Ｅ２に平行で板厚に相当するδだけ僅か下方にある縁線５ａと、左端を縁線３５ａと、右端を第１の折り曲げ線Ｅ１の延長線上にあって第１のコーナー部Ｃａの第１のコーナー部材１３ａを折り曲げるための折り曲げ線Ｂａと、に囲まれた４角形に形成されている。
第３の側板１０ｂに接続する第１の内側板１４ｂも、右端を縁線３５ｂに左端を第３の折り曲げ線Ｅ３に読み替え、他の符合の添字ａをｂに読み替えるれば第１の内側板１４ａと実質的に同じである。 The first inner plate 14a connected to the first side plate 10a has an upper end bent line 17a, a lower end parallel to the second bent line E2, and an edge line 5a slightly below δ corresponding to the plate thickness, A quadrangle surrounded by an edge line 35a on the left end and a fold line Ba for folding the first corner member 13a of the first corner portion Ca with the right end on an extension line of the first fold line E1. Is formed.
The first inner plate 14b connected to the third side plate 10b is also the first inner plate if the right end is read as an edge line 35b and the left end is read as a third fold line E3, and the other suffix "a" is read as b. 14a is substantially the same.

第１のコーナー部Ｃａの第１のコーナー部材１３ａは、斜めの線の第１の折り曲げ線Ａａと、第１の折り曲げ線Ｅ１の延長線上にあって第１の斜め折り曲げ線Ａａを長辺とする直角３角形の一辺をなす折り曲げ線Ｂａと、第２の折り曲げ線Ｅ２の延長線上にある折り曲げ線Ｆａと、に囲まれた３角形に形成され、第１の斜め折り曲げ線Ａａで折り曲げられて第１のコーナー部Ｃａにおける底板１５の上に２重になって底部の強度を向上させる機能を有して形成されている。   The first corner member 13a of the first corner portion Ca has a first fold line Aa that is an oblique line and an extension line of the first fold line E1, and the first oblique fold line Aa is a long side. Formed into a triangle surrounded by a fold line Ba that forms one side of the right triangle and a fold line Fa on the extension line of the second fold line E2, and is bent at the first oblique fold line Aa. The first corner portion Ca is formed on the bottom plate 15 so as to be doubled so as to improve the strength of the bottom portion.

第２、第３、第４のコーナー部Ｃｂ、Ｃｃ、Ｃｄの第２、第３、第４のコーナー部材１３ｂ、１３ｃ、１３ｄもそれぞれの添字がかわるのみで実質的に第１のコーナー部材１３ａと同じである。
第１の側板１０ａに接続する第２の内側板１４ｄも上下を替え、第１の内側板１４ａの各符号の添字ａをｄに替えれば第１の側板１０ａとに実質的に同じである。 The second, third, and fourth corner members Cb, Cc, and Cd of the second, third, and fourth corner members 13b, 13c, and 13d are also substantially changed to the first corner member 13a only by changing their subscripts. Is the same.
The second inner plate 14d connected to the first side plate 10a is also substantially the same as the first side plate 10a if the upper and lower sides of the second inner plate 14d are changed and the subscript a of the reference numerals of the first inner plate 14a is changed to d.

第２の側板２０とフランジ２１とはフランジ２１を折り曲げるための折り曲げ線１６によって接続し、第２の側板２０と、第２の側板２０の第１の内向き側板１２ａとは、第１の内向き側板１２ａを折り曲げるための折り曲げ線Ｄａによって接続している。
第２の側板２０と第２の側板２０の第２の内向き側板１２ｂとは第２の内向き側板１２ｂを折り曲げるための折り曲げ線Ｄｂによって接続している。 The second side plate 20 and the flange 21 are connected by a folding line 16 for bending the flange 21, and the second side plate 20 and the first inward side plate 12a of the second side plate 20 The facing side plate 12a is connected by a folding line Da for folding.
The second side plate 20 and the second inward side plate 12b of the second side plate 20 are connected by a fold line Db for bending the second inward side plate 12b.

第２の側板２０の第１の内向き側板１２ａは、上端を第２の折れ曲げ線Ｅ２の延長線上にあって第１のコーナー部１３ａを折り曲げるための第１のコーナーの折り曲げ線Ｆａと、左端を第１の折れ曲げ線Ｅ１の延長線上にある縁線６ａと、下端を折り曲げ線１６の延長線上にある縁線７ａと、右端を折り曲げ線Ｄａと、に囲まれた４角形に形成されている。 The first inward side plate 12a of the second side plate 20 has an upper end on an extension line of the second fold line E2 and a fold line Fa of the first corner for folding the first corner portion 13a, The left end is formed into a quadrangle surrounded by the edge line 6a on the extension line of the first fold line E1, the lower end is formed on the edge line 7a on the extension line of the fold line 16, and the right end is surrounded by the fold line Da. ing.

上記の第１のコーナー部材１３ａと、第１の内向き側板１２ａと、第１の内側板１４ａと、で第１のコーナー部Ｃａが形成されている。
同様に、第２、第３、第４のコーナー部Ｃｂ、Ｃｃ、Ｃｄは上記の符号の添字をかえたものと実質的に同じである。 The first corner member 13a, the first inward side plate 12a, and the first inner plate 14a form a first corner portion Ca.
Similarly, the second, third, and fourth corner portions Cb, Cc, and Cd are substantially the same as those obtained by changing the suffixes of the above symbols.

フランジ２１は、折り曲げ線１６の左端部７ａと、右端部１５ｂと、折り曲げ線１６に平行な縁線２２とで囲まれて台形に形成されている。
第２の側板２０の折り曲げ線１６に沿ってスリット２１ｓが穿孔され、後記する差込板６０が差込まれるように穿孔されている。 The flange 21 is formed in a trapezoidal shape surrounded by the left end portion 7 a, the right end portion 15 b of the fold line 16, and an edge line 22 parallel to the fold line 16.
A slit 21 s is drilled along the fold line 16 of the second side plate 20, and a later-described insertion plate 60 is drilled.

第４の側板４０は、第４の側板４０の第１の内向き側板１２ｄを折り曲げるための第３３の折り曲げ線Ｄｄで第１の内向き側板１２ｄに接続し、第４の側板４０の第２の内向き側板１２ｃを折り曲げるための折り曲げ線Ｄｃで第２の内向き側板１２ｃに接続し、箱体１の天井部を構成する天井板３５を折り曲げるための第４の折り曲げ線Ｅ４に平行な折り曲げ線Ｅ０で天井板３５に接続している。   The fourth side plate 40 is connected to the first inward side plate 12d at the 33rd fold line Dd for bending the first inward side plate 12d of the fourth side plate 40, and the second side plate 40 of the fourth side plate 40 is connected to the second side plate 40d. A fold line Dc for folding the inward side plate 12c is connected to the second inward side plate 12c, and the fold is parallel to the fourth fold line E4 for folding the ceiling plate 35 constituting the ceiling portion of the box 1. It is connected to the ceiling board 35 by a line E0.

第４の側板４０の第１の内向き側板１２ｄは、上下端を入れ替え、符合の添字ａをｄに読み替えれば、第２の側板２０に連続する第１の内向き側板１２ａと実質的に同じである。
また、第４の側板４０の第２の内向き側板１２ｃはＹ−Ｙ軸に対して対称で符合の添字ｄをｃに読み替えたものと同じである。 The first inward side plate 12d of the fourth side plate 40 is substantially the same as the first inward side plate 12a continuous with the second side plate 20 if the upper and lower ends are replaced and the suffix “a” is replaced with “d”. The same.
The second inward side plate 12c of the fourth side plate 40 is the same as that obtained by replacing the suffix “d” with “c” in symmetry with respect to the Y-Y axis.

折り曲げ線Ｅ０によって第４の側板４０に接続された天井板３５と左部の第５の側板５０ａとは、第５の側板５０ａを折り曲げるための第５の折り曲げ線Ｅ５によって接続され、天井板３５と右部の第６の側板５０ｂとは、第６の側板５０ｂを折り曲げるための第６の折り曲げ線Ｅ６によって接続され、天井板３５と上部の差込板６０とは差込板６０を折り曲げるための第７の折り曲げ線Ｅ７によって接続されている。   The ceiling plate 35 connected to the fourth side plate 40 by the folding line E0 and the fifth side plate 50a at the left part are connected by the fifth folding line E5 for folding the fifth side plate 50a, and the ceiling plate 35 is connected. Are connected by a sixth fold line E6 for bending the sixth side plate 50b, and the ceiling plate 35 and the upper insertion plate 60 are for bending the insertion plate 60. Are connected by a seventh fold line E7.

天井板３５の折り曲げ線Ｅ０と第５の折り曲げ線Ｅ５とは、コーナー部において折り曲げ線Ｅ０の左端部の交点１５ｄと、第５の折り曲げ線Ｅ５の下端部の交点２８ｄとを接続する斜めの縁線ｉ１によって接続している。
ここで、第５の折り曲げ線Ｅ５は、底板１５の左端部の第１の折り曲げ線Ｅ１に平行で、第１の折り曲げ線Ｅ１に対して板厚より僅かに大きな隙間δ１を設けた外方に位置している。 The fold line E0 and the fifth fold line E5 of the ceiling board 35 are oblique edges connecting the intersection 15d of the left end of the fold line E0 and the intersection 28d of the lower end of the fifth fold line E5 at the corner. Connected by line i1.
Here, the fifth fold line E5 is parallel to the first fold line E1 at the left end portion of the bottom plate 15, and is outwardly provided with a gap δ1 slightly larger than the plate thickness with respect to the first fold line E1. positioned.

また、第５の折り曲げ線Ｅ５と第７の折り曲げ線Ｅ７とはコーナー部において、第７の折り曲げ線Ｅ７の板厚δに相当する僅か上部に並行する縁線３０ｂの交点２９ｂと、第５の折り曲げ線Ｅ５の上端の交点２８ｃとを連結する傾斜部分の縁線ｉ４によって接続している。   Further, the fifth fold line E5 and the seventh fold line E7 are, at the corner portions, the intersection 29b of the edge line 30b parallel to the slightly upper portion corresponding to the plate thickness δ of the seventh fold line E7, and the fifth fold line E7. It is connected by an edge line i4 of an inclined portion connecting the intersection 28c at the upper end of the fold line E5.

また、第７の折り曲げ線Ｅ７と第６の折り曲げ線Ｅ６とは第５の折り曲げ線Ｅ５を第６の折り曲げ線Ｅ６に読み替えれば、傾斜部分の縁線ｉ３は傾斜部分の縁線ｉ４と同じである。   The seventh fold line E7 and the sixth fold line E6 are the same as the edge line i4 of the inclined portion if the fifth fold line E5 is replaced with the sixth fold line E6. It is.

また、折り曲げ線Ｅ０と第６の折り曲げ線Ｅ６とは、第５の折り曲げ線Ｅ５を第６の折り曲げ線Ｅ６に読み替え、符合の添字ｄをｃに替えれば傾斜部分の縁線ｉ２は傾斜部分の縁線ｉ１と同じである。   In addition, the folding line E0 and the sixth folding line E6 are obtained by replacing the fifth folding line E5 with the sixth folding line E6 and replacing the subscript d of the sign with c, so that the edge line i2 of the inclined portion is the slope of the inclined portion. It is the same as the edge line i1.

第５の側板５０ａは、左端を縁線３５ａの延長線上にある縁線３６ａと、右端を第５の折り曲げ線Ｅ５と、上端を重複壁面を構成する第１の重複側板４４を折り曲げるための折り曲げ線Ｌ１ｃと、下端を第２の重複側板４７を折り曲げるための折り曲げ線Ｌ１ｄとに囲まれた４角形に形成されている。
そして、折り曲げ線Ｌ１ｃの右端部は交点２８ｃに合致し、折り曲げ線Ｌ１ｄの右端部は交点２８ｄに合致している。 The fifth side plate 50a is bent to fold the first overlapping side plate 44 that constitutes the overlapping wall surface at the upper end, the edge line 36a on the extension line of the edge line 35a at the left end, the fifth folding line E5 at the right end. The lower end is formed in a quadrangular shape surrounded by a line L1c and a folding line L1d for folding the second overlapping side plate 47.
The right end of the fold line L1c matches the intersection 28c, and the right end of the fold line L1d matches the intersection 28d.

第５の側板５０ａの第１の重複側板４４は左端の縁線３６ａと、第５の折り曲げ線Ｅ５の延長線上にある縁線２６ｃと、上端は縁線２５ｃと、下端は前記折り曲げ線Ｌ１ｃと、で囲まれて４角形の形成されている。   The first overlapping side plate 44 of the fifth side plate 50a has a left end edge line 36a, an edge line 26c on the extension line of the fifth fold line E5, an upper end at the edge line 25c, and a lower end at the fold line L1c. , And a quadrangular shape is formed.

第５の側板５０ａの第１の重複側板４４は第１の重複側板４４の第１、第２、第３のコーナー側板４６ｃ、４７ｃ、４８ｃの３つの４角形からなり、第１、第２のコーナー側板４６ｃ、４７ｃは折り曲げ線Ｌ２ｃで接続し、第２、第３のコーナー側板４７ｃ、４８ｃは折り曲げ線Ｌ３ｃで接続している。   The first overlapping side plate 44 of the fifth side plate 50a is composed of three quadrangular shapes of the first, second, and third corner side plates 46c, 47c, and 48c of the first overlapping side plate 44. The corner side plates 46c and 47c are connected by a folding line L2c, and the second and third corner side plates 47c and 48c are connected by a folding line L3c.

第５の側板５０ａの第２の重複側板４７は第１の重複側板４４に対向した対称形状であって、各符号の添字ｃをｄに替えたものと同じである。   The second overlapping side plate 47 of the fifth side plate 50a has a symmetrical shape facing the first overlapping side plate 44, and is the same as that in which the suffix c of each symbol is replaced with d.

第６の側板５０ｂの第３の重複側板４３は、第５の側板５０ａの第１の重複側板４４とＹ−Ｙ軸に対向した対称形状であって、各符号の添字ｃをｂに替えたものと同じである。     The third overlapping side plate 43 of the sixth side plate 50b has a symmetrical shape opposite to the first overlapping side plate 44 of the fifth side plate 50a and the Y-Y axis, and the subscript c of each symbol is changed to b. Is the same.

第６の側板５０ｂ及びその第１、第２の重複側板４３、４６は第５の側板５０ａ及び第１、第２の重複側板４４、４７とＹ−Ｙ軸に対して対称に形成され、斜め線ｉ３、ｉ２と、折り曲げ線Ｅ６が、ｉ４、ｉ１、Ｅ５に対称であり、其の他は符合の添字を省いたものと同様で、それぞれが同じ形状である。   The sixth side plate 50b and the first and second overlapping side plates 43 and 46 are formed symmetrically with respect to the fifth side plate 50a and the first and second overlapping side plates 44 and 47 with respect to the Y-Y axis. The lines i3 and i2 and the fold line E6 are symmetric with respect to i4, i1 and E5, and the others are the same as those except that the suffixes are omitted, and each has the same shape.

差込板８は、第４の側壁４０の反対側の上端を縁線３１で、下端を第７の折り曲げ線Ｅ７とで、左右が平行な４角形の形成されていて、前記フランジ２１に穿孔されたスリット２１ｓに差込まれるように形成されている。   The insertion plate 8 is formed in a quadrangular shape in which the upper end on the opposite side of the fourth side wall 40 is the edge line 31 and the lower end is the seventh fold line E7, and the left and right are parallel to each other. It is formed so as to be inserted into the slit 21s.

上記の各折り曲げ線は、押圧して段ボールの板厚を減少させてもよいし、板厚の適宜の深さへの切り込みでも、あるいは切断の断絶でもいずれでもよい。   Each fold line may be pressed to reduce the thickness of the corrugated cardboard, or may be cut into an appropriate depth or cut off.

上記の展開図で示された平板体１Ｚを箱体１に組み立てる手順の１例を展開図の図１を参照して以下に説明する。
上記の展開図１で示された平板体１Ｚを箱体１に組み立てた場合の上面図が図２であり、その図２のＡ矢視正面図が図３であり、Ｂ矢視側面図が図４である。また、図３のＸ−Ｘ断面上面図が図５である。 One example of the procedure for assembling the flat plate 1Z shown in the development view to the box 1 will be described below with reference to FIG. 1 of the development view.
FIG. 2 is a top view when the flat plate 1Z shown in the development view 1 is assembled to the box 1, FIG. 3 is a front view as viewed from the arrow A in FIG. FIG. 5 is a cross-sectional top view taken along the line XX of FIG.

また、底板１５と第２及び第３の側板２０、１０ｂで構成する第２のコーナー部Ｃｂの斜視図が図６であり、図６のＹ３−Ｙ３断面図が図７であり、天井板３５と第６の側板５０ｂ及び複数の側板からなる第６の側板５０ｂの第１の重複側板４３で構成する同じ第２のコーナー部Ｃｂの斜視図が図８である。   6 is a perspective view of the second corner portion Cb formed by the bottom plate 15 and the second and third side plates 20 and 10b, FIG. 7 is a sectional view taken along the line Y3-Y3 of FIG. FIG. 8 is a perspective view of the same second corner portion Cb constituted by the first overlapping side plate 43 of the sixth side plate 50b and the sixth side plate 50b composed of a plurality of side plates.

図２〜図４において、箱体１は円柱形の収容物を収容するために適する底板１５をコーナーで折り曲げて第１の〜第４のコーナー部Ｃａ〜Ｃｄを設けた中空４角柱状の６面体に構成されている。
図２において、天井板３５で箱体１の上部を覆い、図における上部を第４の側板４０で構成し、下部を第２の側板２０で構成し、左右部を第５、第６の側板５０ａ、５０ｂで構成している。そして天井部３５に接続するための差込板６０が第１の側板２０に紙面に直角下方に差込まれている 2 to 4, the box 1 is a hollow quadrangular columnar shape 6 in which first to fourth corner portions Ca to Cd are provided by bending a bottom plate 15 suitable for accommodating a cylindrical container at a corner. It is composed of a face piece.
2, the upper part of the box 1 is covered with a ceiling plate 35, the upper part in the figure is constituted by a fourth side plate 40, the lower part is constituted by a second side plate 20, and the left and right parts are fifth and sixth side plates. 50a and 50b. And the insertion board 60 for connecting to the ceiling part 35 is inserted in the 1st side board 20 at right angle downward on the paper surface.

図２のＡ矢視正面図を示す図３において、天井板３５と底板１５との間に第２の側板２０が位置し、点線で示す差込板６０が第２の側板２０の天部２０ａから下方に差込まれている。
底板１５の図３における右端部の第２のコーナー部Ｃｂの底部に第２のコーナー部材１３ｂが設けられ、この第２のコーナー部材１３ｂと天井板３５との間に詳細を後記する第６の側板５０ｂの第１の重複側板４３の第１、第２のコーナー側板４６ｂ、４７ｂと図に表れない第３のコーナー側板４８ｂが設けられている。 In FIG. 3, which shows a front view as viewed in the direction of arrow A in FIG. 2, the second side plate 20 is located between the ceiling plate 35 and the bottom plate 15, and the insertion plate 60 indicated by a dotted line is the top portion 20 a of the second side plate 20. From below.
A second corner member 13b is provided at the bottom of the second corner portion Cb at the right end portion in FIG. 3 of the bottom plate 15, and a sixth corner, which will be described in detail later, between the second corner member 13b and the ceiling plate 35 is provided. The first and second corner side plates 46b and 47b of the first overlapping side plate 43 of the side plate 50b and the third corner side plate 48b not shown in the figure are provided.

図２のＢ矢視側面図を示す図４において、天井板３５と底板１５との間に第６の側板５０ｂが位置し、第２のコーナー部Ｃｂにおいては第６の側板５０ｂに接続する第６の側板５０ｂの第１の重複側板４３の第１、第２のコーナー側板４６ｂ、４７ｂと後記する図５で示す第３のコーナー側板４８ｂが設けられている。   In FIG. 4 showing a side view as viewed from the arrow B in FIG. 2, the sixth side plate 50b is located between the ceiling plate 35 and the bottom plate 15, and the second corner portion Cb is connected to the sixth side plate 50b. There are provided first and second corner side plates 46b, 47b of the first overlapping side plate 43 of the sixth side plate 50b and a third corner side plate 48b shown in FIG.

第６の側板５０ｂと、第６の側板５０ｂに接続する第６の側板５０ｂの第１の重複側板４３の第１のコーナー側板４６ｂとは折り曲げ線Ｌ１ｂで接続し、第１のコーナー側板４６ｂと第２のコーナー側板４７ｂとは折り曲げ線Ｌ２ｂで接続し、第２のコーナー側板４７ｂと第３の側板４８ｂとは折り曲げ線Ｌ３ｂで接続している。   The sixth side plate 50b and the first corner side plate 46b of the first overlapping side plate 43 of the sixth side plate 50b connected to the sixth side plate 50b are connected by a folding line L1b, and the first corner side plate 46b The second corner side plate 47b is connected by a folding line L2b, and the second corner side plate 47b and the third side plate 48b are connected by a folding line L3b.

また、第２の側板２０の折り曲げた端部に第２の側板２０の第１の内向き側板１２ｂが設けられていて、第２の側板２０と第２の側板２０の第２の内向き側板１２ｂとは折り曲げ線Ｄｂで接続している。   Further, a first inward side plate 12 b of the second side plate 20 is provided at a bent end portion of the second side plate 20, and the second inward side plate of the second side plate 20 and the second side plate 20. 12b is connected by a folding line Db.

第３のコーナー部Ｃｃは第２のコーナー部Ｃｂとは図２において横軸Ｘ１―Ｘ１を挟んで対称に構成されていて、第６の側板５０ｂに接続する第６の側板５０ｂの第２の重複側板４６の第１のコーナー側板４６ａと第２のコーナー側板４７ａと後記する図５で示す第３のコーナー側板４８ａが配置されている。   The third corner portion Cc is configured symmetrically with respect to the second corner portion Cb with respect to the horizontal axis X1-X1 in FIG. 2, and the second corner portion Cc is connected to the sixth side plate 50b. A first corner side plate 46a and a second corner side plate 47a of the overlapping side plate 46 and a third corner side plate 48a shown in FIG.

第６の側板５０ｂと第６の側板５０ｂの第２の重複側板４６の第１のコーナー側板４６ａは折り曲げ線Ｌ１ａで接続し、第１のコーナー側板４６ａと第２のコーナー側板４７ａとは折り曲げ線Ｌ２ａで接続し、第２のコーナー側板４７ａと第３のコーナー側板４８ａとは折り曲げ線Ｌ３ａで接続している。   The first corner side plate 46a of the sixth side plate 50b and the second overlapping side plate 46 of the sixth side plate 50b are connected by a fold line L1a, and the first corner side plate 46a and the second corner side plate 47a are fold lines. The second corner side plate 47a and the third corner side plate 48a are connected by a folding line L3a.

第４の側板４０の折り曲げた端部に第４の側板４０の第２の内向き側板１２ｃが配置されていて、第４の側板４０と第２の内向き側板１２ｃとは折り曲げ線Ｄｃで接続している。   The second inward side plate 12c of the fourth side plate 40 is disposed at the bent end portion of the fourth side plate 40, and the fourth side plate 40 and the second inward side plate 12c are connected by a folding line Dc. is doing.

図５は図３のＸ−Ｘ断面であって、図２〜図４では隠れていた底板１５に接続する第３の側板１０ｂの第１、第２の内側板１４ｂ、１４ｃと、第６の側板５０ｂに接続する第６の側板５０ｂの第１、第２の重複側板４３、４６との関係を示している。   FIG. 5 is a cross-sectional view taken along the line XX of FIG. 3, and the first and second inner plates 14 b and 14 c of the third side plate 10 b connected to the bottom plate 15 hidden in FIGS. The relationship with the 1st, 2nd duplication side plates 43 and 46 of the 6th side plate 50b connected to the side plate 50b is shown.

第２のコーナー部Ｃｂに、第２の側板２０と第３の側板１０ｂとのコーナーの折り曲げが形成されており、第２の側板２０に折り曲げ線Ｄｂで接続して箱体１の内部側に曲折した第２の側板２０の第２の内向き側板１２ｂと、第３の側板１０ｂに折り曲げ線１７ｂで接続して箱体１の内部側に曲折し端部が第２の内向き側板１２ｂの端部に近接する第３の側板１０ｂの第１の内側板１４ｂと、第６の側板５０ｂに折り曲げ線Ｌ１ｂで接続し箱体１の内部側に複数に曲折し重複して形成された第６の側板５０ｂの第１の重複側板４３とでコーナーが構成されている。   In the second corner portion Cb, the corner bends of the second side plate 20 and the third side plate 10b are formed. The second side plate 20 is connected to the inner side of the box 1 by being connected to the second side plate 20 by a fold line Db. The second inward side plate 12b of the bent second side plate 20 is connected to the third side plate 10b by a fold line 17b, bent to the inner side of the box 1 and the end portion of the second inward side plate 12b. A sixth inner plate 14b of the third side plate 10b adjacent to the end and a sixth side plate 50b connected to the sixth side plate 50b by a fold line L1b and bent into a plurality of portions on the inner side of the box 1 to be overlapped. A corner is constituted by the first overlapping side plate 43 of the side plate 50b.

第６の側板５０ｂの第１の重複側板４３は、第６の側板５０ｂに折り曲げ線Ｌ１ｂで鈍角に接続した第１の重複側板４３の第１のコーナー側板４６ｂと、第１のコーナー側板４６ｂに折り曲げ線Ｌ２ｂで鈍角に接続した第２のコーナー側板４７ｂと、第２のコーナー側板４７ｂに折り曲げ線Ｌ３ｂで鋭角に接続した第３のコーナー側板４８ｂとで屏風状に折れ重なった重複壁面で構成されている。そして第３のコーナー側板４８ｂは第３の側板１０ｂの第１の内側板１４ｂに密接している。   The first overlapping side plate 43 of the sixth side plate 50b is connected to the first corner side plate 46b of the first overlapping side plate 43 and the first corner side plate 46b connected to the sixth side plate 50b at an obtuse angle at a fold line L1b. The second corner side plate 47b connected at an obtuse angle at the fold line L2b and the third wall side plate 47b connected at an acute angle at the fold line L3b to the second corner side plate 47b are configured by overlapping wall surfaces folded in a folding screen shape. ing. The third corner side plate 48b is in close contact with the first inner plate 14b of the third side plate 10b.

また、第２の側板２０の第２の内向き側板１２ｂの底部と第３の側板１０ｂの第１の内側板１４ｂの底部とは、３角状の第１のコーナー部材１３ｂを介して接続している。   The bottom of the second inward side plate 12b of the second side plate 20 and the bottom of the first inner plate 14b of the third side plate 10b are connected via a triangular first corner member 13b. ing.

第３のコーナー部Ｃｃも第２のコーナーＣｂと同様で、図５における横軸Ｘ２−Ｘ２に対称に形成されていて、符合の添字ｂをａに替えたものと同じである。   The third corner portion Cc is the same as the second corner Cb, is formed symmetrically with respect to the horizontal axis X2-X2 in FIG. 5, and is the same as that in which the suffix “b” is replaced with “a”.

図６〜図８は第２のコーナー部Ｃｂの形状を分かり易く示すための斜視図である。
図６は第２のコーナーＣｂを底板１５を主体にして示したものである。
底板１５から第３の折り曲げ線Ｅ３で直角に立ち上がった第３の側板１０ｂは、折り曲げ線１７ｂで箱体１の内方に鈍角に曲折して第３の側板１０ｂの第１の内側板１４ｂを形成している。 6 to 8 are perspective views for easily showing the shape of the second corner portion Cb.
FIG. 6 shows the second corner Cb with the bottom plate 15 as a main component.
The third side plate 10b that rises at a right angle from the bottom plate 15 at the third fold line E3 is bent at an obtuse angle inward of the box 1 at the fold line 17b so that the first inner plate 14b of the third side plate 10b is bent. Forming.

ここで第２のコーナー部材１３ｂは、第２の側壁２０と隣合う第５の側壁１０ｂを交点２０ｂと交点８ｂとを連結して斜めに折り曲げる第２のコーナー部Ｃｂの斜めの線Ａｂと、斜めの線Ａｂの一方の第１の端部でもある第１の交点８ｂと箱体１の内方に水平に延びた第２の端部である交点１５ｂを連結する第１の内向き折り曲げ線Ｆｂと、斜めの線Ａｂの他方の第３の端部である交点２０ｂと前記の交点１５ｂを連結する第２の内向き折り曲げ線Ｂｂと、で３角形に形成されている。     Here, the second corner member 13b includes an oblique line Ab of the second corner portion Cb that obliquely bends the fifth sidewall 10b adjacent to the second sidewall 20 by connecting the intersection 20b and the intersection 8b, and A first inward fold line connecting the first intersection 8b which is also one first end of the diagonal line Ab and the intersection 15b which is a second end extending horizontally inward of the box 1 Fb, the intersection 20b which is the other third end of the diagonal line Ab, and the second inward folding line Bb connecting the intersection 15b are formed in a triangle.

図７は図６のＹ３−Ｙ３断面図であり、底板１５から斜めの線Ａｂで箱体１の内方に折り曲げられて底板１５の上に重なった第１のコーナー部材１３ｂを示している。
また、第１のコーナー部材１３ｂは、第２の内向き折り曲げ線Ｂｂで直角に折り曲げられて第３の側板１０ｂの第１の内側板１４ｂを形成し、第１の内向き折り曲げ線Ｆｂで直角に折り曲げられて第２の側板２０の第２の内側板１２ｂを形成している。 7 is a cross-sectional view taken along the line Y3-Y3 of FIG. 6 and shows a first corner member 13b that is folded inward from the bottom plate 15 along the diagonal line Ab and overlaps the bottom plate 15. FIG.
Further, the first corner member 13b is bent at a right angle by a second inward fold line Bb to form a first inner plate 14b of the third side plate 10b, and is perpendicular by a first inward fold line Fb. Is bent to form a second inner plate 12b of the second side plate 20.

図６に戻って、第２の内側板１２ｂは、交点８ｂから直角に立ち上がる折れ曲げ線Ｄｂで折れ曲って、交点８ｂと対向位置にある図１に示す交点８ａを結ぶ第２の折れ曲げ線Ｅ２から立ち上がる第２の側板２０の端部に連続している。     Returning to FIG. 6, the second inner side plate 12b is bent at a bending line Db rising at a right angle from the intersection 8b, and is connected to the intersection 8b shown in FIG. 1 at the opposite position to the intersection 8b. It continues to the end of the second side plate 20 rising from E2.

第２のコーナー部Ｃｂの第１のコーナー部材１３ｂの端部にある直角な縁線５ｂが第２の側板２０の第２の内向き側板１２ｂの端部の直角の縁線６ｂに近接して配置されている。     The right-angled edge line 5b at the end of the first corner member 13b of the second corner portion Cb is close to the right-angled edge line 6b at the end of the second inward side plate 12b of the second side plate 20. Has been placed.

第２の側板２０は前記のように、底板１５から第２の折り曲げ線Ｅ２で直角に曲折して立ち上がっていて、第２の側板２０の第２の内向き側板１２ｂは折り曲げ線Ｄｂで箱体１の内方に鋭角に曲折してその先端は第３の側板１０ｂの第１の内側板１４ｂに近接して配置されている。     As described above, the second side plate 20 is bent at a right angle from the bottom plate 15 along the second fold line E2, and the second inward side plate 12b of the second side plate 20 is boxed at the fold line Db. 1 is bent at an acute angle inwardly, and its tip is disposed close to the first inner plate 14b of the third side plate 10b.

第２の側板２０に折り曲げ線１６で接続したフランジ２１は、天井板３５の端部に設けられた差込板６０が差込まれるスリット２１ｓが設けられて天井板３５を支持するように構成されている。   The flange 21 connected to the second side plate 20 by the bend line 16 is configured to support the ceiling plate 35 by providing a slit 21 s into which the insertion plate 60 provided at the end of the ceiling plate 35 is inserted. ing.

図８は上記の図６で示した箱体１の下部を覆うために天井板３５から第６の折り曲げ線Ｅ６で接続して垂下する第６の側板５０ｂの形状を主体に示している。
第６の側板５０ｂは、折り曲げ線Ｌ１ｂで箱体１の内方に鈍角に曲折して形成する第６の側板５０ｂの第１の重複側板４３に接続している。 FIG. 8 mainly shows the shape of the sixth side plate 50b that hangs down from the ceiling plate 35 by being connected by the sixth fold line E6 so as to cover the lower portion of the box 1 shown in FIG.
The sixth side plate 50b is connected to the first overlapping side plate 43 of the sixth side plate 50b formed by bending at an obtuse angle inward of the box 1 at the folding line L1b.

第６の側板５０ｂの第１の重複側板４３は、第６の側板５０ｂから折り曲げ線Ｌ１ｂで鈍角に接続する第６の側板５０ｂの第１の重複側板４３の第１のコーナー側板４６ｂと、第１のコーナー側板４６ｂに折り曲げ線Ｌ２ｂで鈍角に接続する第２のコーナー側板４７ｂと、第２のコーナー側板４７ｂに折り曲げ線Ｌ３ｂで鋭角に接続する第３のコーナー側板４８ｂとで中空３角柱状に構成されている。第３のコーナー側板４８ｂは第２の内側板１４ｂに外方から密接している（図５参照）。
上記構成の第６の側板５０ｂの第１の重複側板４３は、第２のコーナー部Ｃｂの座屈強度を増加する機能を果たすよう構成されている。 The first overlapping side plate 43 of the sixth side plate 50b includes a first corner side plate 46b of the first overlapping side plate 43 of the sixth side plate 50b connected at an obtuse angle from the sixth side plate 50b at a fold line L1b, The second corner side plate 47b connected to the first corner side plate 46b at an obtuse angle by a fold line L2b and the third corner side plate 48b connected to the second corner side plate 47b at an acute angle by a fold line L3b are formed into a hollow triangular column shape. It is configured. The third corner side plate 48b is in close contact with the second inner plate 14b from the outside (see FIG. 5).
The first overlapping side plate 43 of the sixth side plate 50b configured as described above is configured to perform a function of increasing the buckling strength of the second corner portion Cb.

そして、天井板３５の端部に設けられた差込板６０をフランジ２１に設けられたスリット２１ｓ（図６参照）に差込み、上下を一体にして第２のコーナー部Ｃｂを複数の重複壁面で座屈強度を向上させるように構成している。   And the insertion board 60 provided in the edge part of the ceiling board 35 is inserted in the slit 21s (refer FIG. 6) provided in the flange 21, and the 2nd corner part Cb is united by several overlapping wall surfaces up and down. The buckling strength is improved.

上記の第２のコーナー部Ｃｂに対して第１、第３、第４のコーナー部Ｃａ、Ｃｃ、Ｃｄも同様であり、説明を省略する。   The same applies to the first, third, and fourth corner portions Ca, Cc, and Cd with respect to the second corner portion Cb, and a description thereof is omitted.

なお、上記の図２〜図８において前記のように、天井板３５と、天井板３５に接続する側板５０ａ、５０ｂ、４４、４７、４３、４６は収容物を上方から覆う上箱様の機能を有している。また、底板１５と、底板１５に接続する側板１０ａ、２０、１０ｂ、４０、１２ａから１２ｄ、１４ａ〜１４ｄは収容物を下から受けて支える下箱様の機能を有している。   2 to 8 described above, the ceiling plate 35 and the side plates 50a, 50b, 44, 47, 43, and 46 connected to the ceiling plate 35 function as an upper box that covers the contents from above. have. Further, the bottom plate 15 and the side plates 10a, 20, 10b, 40, 12a to 12d and 14a to 14d connected to the bottom plate 15 have a lower box-like function for receiving and supporting the contents from below.

前記の平板体１Ｚを箱体１に組み立てる手順の１例を、展開図の図１及び組立構成を示す図２〜図８を参照して以下に説明する。箱体１の展開図１は左右対称なので展開図１の右半分を主体的に説明する。   One example of the procedure for assembling the flat plate 1Z into the box 1 will be described below with reference to FIG. 1 of an exploded view and FIGS. Development of Box 1 FIG. 1 is symmetrical, so the right half of the development 1 will be mainly described.

第２のコーナー部Ｃｂの斜視図６と断面図７も参照して、最初に平板体１Ｚの底板１５を平面上に置き、フランジ２１を折り曲げ線１６に沿って上方に直角に折り曲げる。
また、第３の側板１０ｂを第３の折り曲げ線Ｅ３に沿って紙面に直角な上方に直角に折り曲げる。 Referring also to the perspective view 6 and the sectional view 7 of the second corner portion Cb, first, the bottom plate 15 of the flat plate 1Z is placed on a plane, and the flange 21 is bent upward along the folding line 16 at a right angle.
Further, the third side plate 10b is bent at a right angle upward along the third fold line E3 and perpendicular to the paper surface.

ついで、第２のコーナー部材１３ｂを第２の斜めの折り曲げ線Ａｂに沿って１８０度折り曲げて底板１５に密接させる。これによって、第２のコーナー部材１３ｂは底板１５の上に重なり２重の底板となる。   Next, the second corner member 13b is bent 180 degrees along the second oblique fold line Ab and brought into close contact with the bottom plate 15. As a result, the second corner member 13b overlaps the bottom plate 15 to form a double bottom plate.

第２のコーナー部材１３ｂを第２の斜めの折り曲げ線Ａｂに沿って折り曲げる際に、第２の側板２０の第２の内向き側板１２ｂは折り曲げ線Ｄｂに沿って箱体１の内方に鋭角に折り曲げられるとともに、折り曲げ線Ｆｂに沿って折り曲げられて底板１５に対して直角な壁面を構成する。   When the second corner member 13b is bent along the second oblique fold line Ab, the second inward side plate 12b of the second side plate 20 has an acute angle inward of the box 1 along the fold line Db. And a wall surface perpendicular to the bottom plate 15 by being bent along the folding line Fb.

また、第２のコーナー部材１３ｂの第２の斜め折り曲げ線Ａｂに沿った折り曲げに伴って、第２のコーナー部材１３ｂに接続する第３の側板１０ｂの第１の内側板１４ｂは折り曲げ線Ｂｂに沿って底板１５に直角に折り曲げられ、同時に折り曲げ線１７ｂに沿って折り曲げられて底板１５に直角な壁面を構成する。   As the second corner member 13b is bent along the second oblique fold line Ab, the first inner plate 14b of the third side plate 10b connected to the second corner member 13b is turned to the fold line Bb. A wall surface perpendicular to the bottom plate 15 is formed by being bent along the folding line 17b at the same time.

上記手順の第２のコーナー部Ｃｂに対する「第３の側板１０ｂを第３の折り曲げ線Ｅ３に沿って紙面に直角な上方に直角に折り曲げる」以降を第３のコーナー部Ｃｃに対しても同様に同時に行う。
即ち、第４の側板４０を第４の折り曲げ線Ｅ４に沿って底板１５に対して紙面に直角な上方に、直角に折り曲げる。 Similarly for the third corner portion Cc, the steps after “belonging the third side plate 10b at a right angle to the upper side perpendicular to the paper surface along the third fold line E3” with respect to the second corner portion Cb in the above procedure are performed. Do it at the same time.
That is, the fourth side plate 40 is bent at a right angle above the bottom plate 15 perpendicular to the paper surface along the fourth fold line E4.

ついで、第３のコーナー部Ｃｃの第１のコーナー部材１３ｃを第３の斜め折り曲げ線Ａｃに沿って１８０度折り曲げて底板１５に密接させる。これによって、第３のコーナー部材１３ｃは底板１５の上に重なり２重の底板となる。   Next, the first corner member 13c of the third corner portion Cc is bent 180 degrees along the third oblique fold line Ac and brought into close contact with the bottom plate 15. As a result, the third corner member 13c overlaps the bottom plate 15 to form a double bottom plate.

その第３のコーナー部材１３ｃを第３の折り曲げ線Ａｃに沿って折り曲げる際に、第４の側板４０の第２の内向き側板１２ｃは折り曲げ線Ｄｃに沿って箱体１の内方に鋭角に折り曲げられるとともに、折り曲げ線Ｆｃに沿って折り曲げられ底板１５に対して直角な壁面を構成する。   When the third corner member 13c is bent along the third fold line Ac, the second inward side plate 12c of the fourth side plate 40 has an acute angle inward of the box 1 along the fold line Dc. In addition to being bent, it is bent along the fold line Fc to form a wall surface perpendicular to the bottom plate 15.

また、第３のコーナー部Ｃｃの第３のコーナー部材１３ｃの第３の斜め折り曲げ線Ａｃに沿った折り曲げに伴って、第３のコーナー部材１３ｃに接続する第３の側板１０ｂの第２の内側板１４ｃは折り曲げ線Ｂｃに沿って底板１５に直角に折り曲げられ、同時に折り曲げ線１７ｃに沿って折り曲げられて底板１５に直角な壁面を構成する。   Further, the second inner side of the third side plate 10b connected to the third corner member 13c with the bending of the third corner member Cc along the third oblique bending line Ac of the third corner member 13c. The plate 14c is bent at a right angle to the bottom plate 15 along the fold line Bc, and is simultaneously bent along the fold line 17c to form a wall surface perpendicular to the bottom plate 15.

以上を図１のＹ−Ｙ縦軸の図の左半分についても同時に行う。ここまでの過程で上記によって構成された底板１５と、底板１５に接続する各側板とは、収容物を下から受けるいわば下箱を構成し、断面図５の内壁に相当する構成になる。   The above is also performed for the left half of the YY vertical axis in FIG. The bottom plate 15 configured as described above and the side plates connected to the bottom plate 15 in the process so far constitute a so-called lower box that receives the contents from below, and corresponds to the inner wall of the sectional view of FIG.

次に第２のコーナー部Ｃｂの斜視図８も参照して、天井板３５を平面上に置き、差込板６０を第７の折り曲げ線Ｅ７に沿って紙面に直角な上方に直角に折り曲げる。
また、第６の側板５０ｂを第６の折り曲げ線Ｅ６に沿って紙面に直角な上方に直角に折り曲げる。 Next, referring also to the perspective view 8 of the second corner portion Cb, the ceiling plate 35 is placed on a plane, and the insertion plate 60 is bent at a right angle upward along the seventh fold line E7 and perpendicular to the paper surface.
Further, the sixth side plate 50b is bent at a right angle upward along the sixth fold line E6 and perpendicular to the paper surface.

つぎに、第６の側板５０ｂの第１の重複側板４３の第１、第２のコーナー側板４６ｂ、４７ｂをそれぞれ折り曲げ線Ｌ１ｂ、Ｌ２ｂに沿って第６の側板５０ｂの紙面に直角な上方に鈍角に折り曲げておき、第３のコーナー側板４８ｂを折り曲げ線Ｌ３ｂに沿って鋭角に折り曲げておく。   Next, the first and second corner side plates 46b and 47b of the first overlapping side plate 43 of the sixth side plate 50b are obtusely angled upward along the folding lines L1b and L2b, respectively, perpendicular to the paper surface of the sixth side plate 50b. The third corner side plate 48b is bent at an acute angle along the folding line L3b.

同様に第６の側板５０ｂの第２の重複側板４６の第１、第２のコーナー側板４６ａ、４７ａをそれぞれ折り曲げ線Ｌ１ａ、Ｌ２ａに沿って第６の側板５０ｂの紙面に直角な上方に鈍角に折り曲げておき、第３のコーナー側板４８ａを折り曲げ線Ｌ３ａに沿って鋭角に折り曲げておく。
つぎに、第６の側板５０ｂを第６の折り曲げ線Ｅ６に沿って紙面に直角な上方に直角に折り曲げる。 Similarly, the first and second corner side plates 46a and 47a of the second overlapping side plate 46 of the sixth side plate 50b are obtusely upward along the folding lines L1a and L2a, respectively, perpendicular to the paper surface of the sixth side plate 50b. The third corner side plate 48a is bent at an acute angle along the folding line L3a.
Next, the sixth side plate 50b is bent at a right angle upward along the sixth fold line E6 and perpendicular to the paper surface.

以上を図１のＹ−Ｙ縦軸の図の左半分についても同時に行う。ここまでの過程で天井板３５と、天井板３５に接続する各側板とで収容物を覆ういわば上箱を構成し、断面図５の外壁に相当する構成になる。   The above is also performed for the left half of the YY vertical axis in FIG. In the process so far, the ceiling box 35 and each side plate connected to the ceiling board 35 constitute a so-called upper box that covers the contents, and the configuration corresponds to the outer wall of the sectional view of FIG.

次に、天井板３５を折り曲げ線Ｅ０に沿って直角に折り曲げ、前記のいわば下箱に重ねる。
このとき、第２のコーナー部Ｃｂでは第６の側板５０ｂの重複側板４３の第１のコーナー側板４６ｂをコーナーで折り曲げる第２の斜め折り曲げ線Ａｂに折り曲げ角度を一致させ、第３のコーナー側板４８ｂを第３の側板１０ｂの第１の内側板１４ｂに密接させ、第２のコーナー側板４７ｂは成り行きに従って折り曲げる。 Next, the ceiling board 35 is bent at a right angle along the fold line E0, and so-called the lower box.
At this time, in the second corner portion Cb, the folding angle is made to coincide with the second oblique folding line Ab that bends the first corner side plate 46b of the overlapping side plate 43 of the sixth side plate 50b at the corner, and the third corner side plate 48b. Is in close contact with the first inner side plate 14b of the third side plate 10b, and the second corner side plate 47b is bent according to the course.

同様に、第３のコーナー部Ｃｃでは第６の側板５０ｂの第２の重複側板４６の第１のコーナー側板４６ａをコーナーで折り曲げる第３の折り曲げ線Ａｃに折り曲げ角度を一致させ、第３の側板１０ｂの第２の内側板１４ｃに密接させ、第２の側板４７ａは成り行きに従って折り曲げる。
ついで、差込板６０をスリット２１ｓに差込んで箱体１が完成される。 Similarly, at the third corner portion Cc, the bending angle is matched with the third folding line Ac that bends the first corner side plate 46a of the second overlapping side plate 46 of the sixth side plate 50b at the corner, and the third side plate The second side plate 47a is bent according to the course, with the second side plate 47a being in close contact with the second inner plate 14c of 10b.
Next, the box 1 is completed by inserting the insertion plate 60 into the slit 21s.

上記構成による本発明の空箱の箱体１とコーナー部を補強しない従来形の箱体とを、ウエイトを乗せて２４時間後の変形状況を確認する積重ね試験によって比較した結果は、従来の箱体は８０ｋｇ荷重で座屈し、本発明の箱体は１６０ｋｇで座屈した。即ち本発明の箱体１はコーナー部に手段を用いない従来品の２倍の耐荷重が得られることがわかった。   The result of comparing the box 1 of the empty box according to the present invention and the conventional box that does not reinforce the corner portion by a stacking test in which a weight is placed and the deformation state after 24 hours is confirmed is as follows. The body buckled at 80 kg load, and the box of the present invention buckled at 160 kg. That is, it was found that the box body 1 of the present invention can obtain twice the load resistance of the conventional product that does not use means at the corner.

本発明の箱体の実施形態を示す展開図である。It is an expanded view which shows embodiment of the box of this invention. 箱体の上面図である。It is a top view of a box. 図２のＡ矢視正面図である。FIG. 3 is a front view as seen from an arrow A in FIG. 2. 図２のＢ矢視側面図である。It is a B arrow side view of FIG. 図３のＸ−Ｘ断面の上面図である。It is a top view of the XX cross section of FIG. 底部と、底板に接続する第１の側板と、第１の側板の第１の内向き側板と、第２の側板と、第２の側板の第１の内向き側板とで形成する第１のコーナー部の斜視図である。A first portion formed by a bottom portion, a first side plate connected to the bottom plate, a first inward side plate of the first side plate, a second side plate, and a first inward side plate of the second side plate. It is a perspective view of a corner part. 図６のＹ３−Ｙ３断面図である。It is Y3-Y3 sectional drawing of FIG. 天井板と、天井板に接続する第５の側板と、第１の重複側板で形成する第１のコーナー部の斜視図である。It is a perspective view of the 1st corner part formed with a ceiling board, the 5th side board connected to a ceiling board, and a 1st duplication side board.

符号の説明Explanation of symbols

１・・・・箱体
１Ｚ・・・平板体
Ａａ、Ａｂ、Ａｃ、Ａｄ・・・斜め線の第１、第２、第３、第４の折り曲げ線
１５・・・底板
Ｃａ、Ｃｂ、Ｃｃ、Ｃｄ・・・第１、第２、第３、第４のコーナー部
１３ａ、１３ｂ、１３ｃ、１３ｄ・・・第１、２、３、４のコーナー部材
３５・・・天井板
１０ａ、２０、１０ｂ、４０、５０ａ、５０ｂ・・・第１、２、３、４、５、６の側板
６０・・・差込板
４３、４６・・・第６の側板の第１、２の重複側板
４４、４７・・・第５の側板の第１、２の重複側板
４６ａ、４７ａ、４８ａ・・第６の側板の第１の重複側板の第１、２、３のコーナー側板
４６ｂ、４７ｂ、４８ｂ・・第６の側板の第２の重複側板の第１、２、３のコーナー側板
４６ｃ、４７ｃ、４８ｃ・・第５の側板の第１の重複側板の第１、２、３のコーナー側板
４６ｄ、４７ｄ、４８ｄ・・第５の側板の第２の重複側板の第１、２、３のコーナー側板
１２ａ、１２ｂ・・・第２の側板の第１、第２の内向き側板
１２ｃ、１２ｄ・・・第４の側板の第１、第２の内向き側板
１４ａ、１４ｄ・・・第１の側板の第１、第２の内向き側板
１４ｂ、１４ｃ・・・第３の側板の第１、第２の内向き側板 DESCRIPTION OF SYMBOLS 1 ...... Box 1Z ... Flat plate Aa, Ab, Ac, Ad ... First, second, third, fourth fold lines of diagonal lines 15 ... Bottom plate Ca, Cb, Cc , Cd ... 1st, 2nd, 3rd, 4th corner portions 13a, 13b, 13c, 13d ... 1st, 2nd, 3rd, 4th corner members 35 ... Ceiling plate 10a, 20, 10b, 40, 50a, 50b ... first, second, third, fourth, fifth, and sixth side plates 60 ... insertion plate 43, 46 ... first and second overlapping side plates 44 of the sixth side plate 44 , 47... First and second overlapping side plates 46a, 47a, 48a of the fifth side plate First, second and third corner side plates 46b, 47b, 48b of the first overlapping side plate of the sixth side plate -The first, second, and third corner side plates 46c, 47c, 48c of the second overlapping side plate of the sixth side plate-of the first overlapping side plate of the fifth side plate First, second, and third corner side plates 46d, 47d, 48d,..., First, second, and third corner side plates 12a, 12b,. 2nd inward side plate 12c, 12d ... 1st, 2nd inward side plate of 4th side plate 14a, 14d ... 1st, 2nd inward side plate of 1st side plate 14b, 14c. ..First and second inward side plates of the third side plate

Claims (3)

切り抜いた平板体を折り曲げて底板と複数の側壁とで多角形に形成する箱体において、その底板（１５）に接続する第１〜第４の４つの側壁（１０ａ、２０、１０ｂ、４０）の端部が隣り合って形成する４つのコーナー部（Ｃａ、Ｃｂ、Ｃｃ、Ｃｄ）を斜めに折り曲げるための斜めの線（Ａａ〜Ａｄ）が底板（１５）に設けられ、その各斜めの線（Ａａ〜Ａｄ）とその斜めの線（Ａａ〜Ａｄ）の一方の第１の端部（８ａ〜８ｄ）に連結して延びる第１の内向き折り曲げ線（Ｆａ〜Ｆｄ）とその第１の内向き折り曲げ線（Ｆａ〜Ｆｄ）の第２の端部（１５ａ〜１５ｄ）とその第２の端部（１５ａ〜１５ｄ）と前記斜めの線（Ａａ〜Ａｄ）の他方の第３の端部（２０ａ〜２０ｄ）を連結する第２の内向き折り曲げ線（Ｂａ〜Ｂｄ）とで３角形のコーナー部材（１３ａ〜１３ｄ）を形成しており、そのコーナー部材（１３ａ〜１３ｄ）は折り曲げられて底板（１５）の上に重ねられるように形成されており、そのコーナー部材（１３ａ〜１３ｄ）の第１の内向き折り曲げ線（Ｆａ〜Ｆｄ）で連続する４つの内向き側板（１２ａ〜１２ｄ）は底板（１５）に対し直角に折り曲げられており、前記第１の端部（８ａ〜８ｄ）のうち第１のコーナー部（Ｃａ）の端部（８ａ）と第２のコーナー部（Ｃｂ）の端部（８ｂ）を連結する第２の折り曲げ線（Ｅ２）を介して第２の側壁（２０）が連続しており、前記第１の端部（８ａ〜８ｄ）のうち第３のコーナー部（Ｃｃ）の端部（８ｃ）と第４のコーナー部（Ｃｄ）の端部（８ｄ）を連結する第４の折り曲げ線（Ｅ４）を介して第４の側壁（４０）が連続しており、また前記第１の端部（８ａ〜８ｄ）に連結して底板（１５）から直角に立ち上がる折り曲げ線（Ｄａ〜Ｄｄ）のうち第１のコーナー部（Ｃａ）の折り曲げ線（Ｄａ）と第２のコーナー部（Ｃｂ）の折り曲げ線（Ｄｂ）とを介して第１及び第２の内向き側板（１２ａ、１２ｂ）がそれぞれ第２の側壁（２０）に連続しており、前記折り曲げ線（Ｄａ〜Ｄｄ）のうち第３のコーナー部（Ｃｃ）の折り曲げ線（Ｄｃ）と第４のコーナー部（Ｃｄ）の折り曲げ線（Ｄｄ）とを介して第３及び第４の内向き側板（１２ｃ、１２ｄ）がそれぞれ第４の側壁（４０）に連続しており、底板（１５）のコーナー部材（１３ａ〜１３ｄ）の第３の端部（２０ａ〜２０ｄ）のうち第１のコーナー部材（１３ａ）の第３の端部（２０ａ）と第４のコーナー部材（１３ｄ）の第３の端部（２０ｄ）とを連結する第１の折り曲げ線（Ｅ１）には第１の側壁（１０ａ）が接続され、第２のコーナー部材（１３ｂ）と第３のコーナー部材（１３ｃ）の第３の端部（２０ｂ、２０ｃ）とを連結する第３の折り曲げ線（Ｅ３）には第３の側壁（１０ｂ）が接続され、前記第１の側壁（１０ａ）に設けられた第３の端部（２０ａ、２０ｄ）から延びる折り曲げ線（１７ａ、１７ｄ）を介して第１の側壁（１０ａ）の両側に内向き側板（１４ａ、１４ｄ）が接続され、前記第３の側壁（１０ｂ）に設けられた第３の端部（２０ｂ、２０ｃ）から延びる折り曲げ線（１７ｂ、１７ｃ）を介して第３の側壁（１０ｂ）の両側に内向き側板（１４ｂ、１４ｃ）が接続され、それらの各内向き側板（１４ａ〜１４ｄ）はそれぞれコーナー部材（１３ａ〜１３ｄ）の内向き折り曲げ線Ｂａ〜Ｂｄと接続されていることを特徴とする箱体。 In a box that is formed by bending a cut plate and forming a polygonal shape with a bottom plate and a plurality of side walls, the first to fourth side walls (10a, 20, 10b, 40) connected to the bottom plate (15). Diagonal lines (Aa to Ad) for obliquely bending four corner portions (Ca, Cb, Cc, Cd) formed adjacent to each other are provided on the bottom plate (15), and each diagonal line ( Aa to Ad) and a first inward fold line (Fa to Fd) connected to one first end (8a to 8d) of the diagonal line (Aa to Ad) and the first inner line The second end (15a-15d) of the direction fold line (Fa-Fd), the second end (15a-15d) and the other third end of the diagonal line (Aa-Ad) ( 20a-20d) with a second inward fold line (Ba-Bd) The corner members (13a to 13d) are formed so that the corner members (13a to 13d) are bent and stacked on the bottom plate (15), and the corner members (13a to 13d) Four inward side plates (12a to 12d) continuous with first inward fold lines (Fa to Fd) are bent at right angles to the bottom plate (15), and the first end portions (8a to 8d). Of the second side wall via the second fold line (E2) connecting the end (8a) of the first corner (Ca) and the end (8b) of the second corner (Cb). 20) is continuous, and the end portion (8c) of the third corner portion (Cc) and the end portion (8d) of the fourth corner portion (Cd) among the first end portions (8a to 8d). A fourth side wall (40) via a fourth fold line (E4) connecting the two The fold line of the first corner portion (Ca) among the fold lines (Da to Dd) that are continuous and connected to the first end portions (8a to 8d) and rise from the bottom plate (15) at a right angle ( The first and second inward side plates (12a, 12b) are respectively continuous with the second side wall (20) via Da) and the fold line (Db) of the second corner (Cb), Among the fold lines (Da to Dd), the third and fourth inner lines are connected via the fold line (Dc) of the third corner portion (Cc) and the fold line (Dd) of the fourth corner portion (Cd). The facing side plates (12c, 12d) are respectively continuous with the fourth side wall (40), and the first end of the third end portions (20a-20d) of the corner members (13a-13d) of the bottom plate (15). The third end (20a) of the corner member (13a) and the fourth core The first side wall (10a) is connected to the first fold line (E1) connecting the third end (20d) of the knurled member (13d), and the second corner member (13b) and the third end (20d) are connected. A third side wall (10b) is connected to the third fold line (E3) connecting the third end (20b, 20c) of the corner member (13c) of the first side wall (10a). Inward side plates (14a, 14d) are connected to both sides of the first side wall (10a) via bending lines (17a, 17d) extending from third ends (20a, 20d) provided on the first end, Inward side plates (14b, 14c) on both sides of the third side wall (10b) via bend lines (17b, 17c) extending from third end portions (20b, 20c) provided on the third side wall (10b) Are connected and their inward side plates (14a-14d) Box, characterized in that it is connected to the inward folding lines Ba~Bd corner members (13 a to 13 d), respectively. 前記箱体に天井部（３５）を設け、第４の側壁（４０）の反対側のその天井部（３５）の端部に折り曲げ線（Ｅ７）で連続する差込板（６０）を設け、底板（１５）に接続する側壁（２０）の上部にその差込板（６０）が差込まれるスリット（２１ｓ）が形成されている請求項１の箱体。 A ceiling part (35) is provided in the box, and an insertion plate (60) continuous at a fold line (E7) is provided at an end of the ceiling part (35) opposite to the fourth side wall (40), The box body according to claim 1, wherein a slit (21s) into which the insertion plate (60) is inserted is formed on an upper portion of the side wall (20) connected to the bottom plate (15). 前記箱体に天井部（３５）を設け、その天井部（３５）に接続する側壁（２０）の端部がコーナー部に屏風状に折れ重なった重複壁面（４３、４４、４６、４７）を形成している請求項１あるいは請求項２の箱体。 A ceiling part (35) is provided in the box, and overlapping wall surfaces (43, 44, 46, 47) in which the end part of the side wall (20) connected to the ceiling part (35) is folded in a folding manner at the corner part. The box of Claim 1 or Claim 2 currently formed.

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