JP2021031079A - Packaging box - Google Patents

Packaging box Download PDF

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JP2021031079A
JP2021031079A JP2019150525A JP2019150525A JP2021031079A JP 2021031079 A JP2021031079 A JP 2021031079A JP 2019150525 A JP2019150525 A JP 2019150525A JP 2019150525 A JP2019150525 A JP 2019150525A JP 2021031079 A JP2021031079 A JP 2021031079A
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Japan
Prior art keywords
wall
piece
lid
insertion piece
tip
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Granted
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JP7242474B2 (en
Inventor
千嘉 宮原
Chika Miyahara
千嘉 宮原
雅之 半田
Masayuki Handa
雅之 半田
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Rengo Co Ltd
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Rengo Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/80Packaging reuse or recycling, e.g. of multilayer packaging

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Abstract

To provide a packaging box with a lid body kept in a closed state.SOLUTION: A packaging box 1 has a box body 2 and a lid body 3. The lid body 3 includes an external lid wall 30 continued to the box body 2, an external insertion piece 31 continued to a tip of the external lid wall 30 via an external folding line L22 and overlapped to a front wall body 12 (tip wall), an internal lid wall 33 overlapped to a rear face of the external lid wall 30 to form a double wall structure, and an internal insertion piece 32 continued to the tip of the internal lid wall 33 via an internal folding line L24 and overlapped to the rear face of the external insertion piece 31 to form the double wall structure. The front wall body 12 is provided with a lock piece 20, the external insertion piece 31 is formed with a lock hole 35 for inserting the lock piece 20, and the internal folding line L24, in at least in an insertion range corresponding to the lock hole 35, is formed at a position displaced to the internal insertion piece 32 side from both ends thereof. In a bent state of the internal insertion piece 32 at the internal folding line L24, an insertion introduction part 38 is formed in the insertion range.SELECTED DRAWING: Figure 10

Description

本発明は、包装箱に関する。 The present invention relates to a packaging box.

例えば、特許文献1に記載の紙箱は、底の四周に側片を起立させた箱本体と、側片に連設された開閉蓋に続いて二重に折り返された耳片と、開閉蓋の内面に貼着した折返片と、を備えていた。内側の耳片と折返片との折目線上にはスリットが形成され、箱本体の側片にはスリットに係止する突片が形成されていた。 For example, the paper box described in Patent Document 1 includes a box body in which side pieces are erected on the four circumferences of the bottom, an ear piece that is double-folded following an opening / closing lid connected to the side piece, and an opening / closing lid. It was equipped with a folded piece attached to the inner surface. A slit was formed on the crease line between the inner ear piece and the folded piece, and a projecting piece that was locked to the slit was formed on the side piece of the box body.

実公昭55−44736号公報Jikkensho 55-44736

上記した紙箱では、スリットが内側の耳片のみに形成されているため、突片は1枚の耳片のみに引っ掛かっていた。したがって、スリットに対する突片の係止量が少なく、突片の係止状態を維持することが困難であり、ユーザの意図に反して開閉蓋が開いてしまう虞があった。 In the above-mentioned paper box, since the slit is formed only in the inner ear piece, the projecting piece is caught in only one ear piece. Therefore, the amount of the projecting piece locked to the slit is small, it is difficult to maintain the locked state of the projecting piece, and there is a risk that the opening / closing lid may open against the intention of the user.

本発明は、上記課題を解決するために、蓋体を閉じた状態に保持することができる包装箱を提供する。 The present invention provides a packaging box capable of holding the lid in a closed state in order to solve the above problems.

上記した目的を達成するため、本発明の包装箱は、一面に開口部を有する箱体と、前記箱体に連設され、前記開口部を開閉する蓋体と、を備え、前記蓋体は、前記開口部の縁部である前記箱体の基端壁の先端部に連設され、前記開口部を閉塞可能に形成された外蓋壁と、前記外蓋壁の先端部に外折曲線を介して連設され、前記外折曲線で屈曲して前記箱体の内部に差し込まれた状態で前記基端壁に対向する前記箱体の先端壁に重ねられる外差込片と、前記外蓋壁の裏面に重ねられて二重壁構造を構成する内蓋壁と、前記内蓋壁の先端部に内折曲線を介して連設され、前記内折曲線で屈曲して前記外差込片の裏面に重ねられて二重壁構造を構成する内差込片と、を含み、前記先端壁には、ロック片が設けられ、前記外差込片には、前記ロック片が差し込まれるロック穴が前記外折曲線に沿って形成され、少なくとも前記ロック穴に対応した差込範囲において前記内折曲線は、その両端よりも前記内差込片の側にずれた位置に形成されており、前記内差込片が前記内折曲線で屈曲した状態において、前記差込範囲には、前記ロック穴を貫通した前記ロック片を前記外蓋壁と前記内蓋壁との間に導くための隙間である差込導入部が形成される。 In order to achieve the above object, the packaging box of the present invention includes a box body having an opening on one surface and a lid body which is connected to the box body and opens and closes the opening. , An outer lid wall that is connected to the tip of the base end wall of the box body, which is the edge of the opening, and is formed so as to be able to close the opening, and an outer folding curve at the tip of the outer lid wall. An outer insertion piece that is connected through the outer lid and is stacked on the tip wall of the box body facing the base end wall in a state of being bent at the outer folding curve and inserted into the inside of the box body, and the outer side. The inner lid wall, which is overlapped on the back surface of the lid wall to form a double wall structure, is connected to the tip of the inner lid wall via an inner folding curve, and is bent at the inner folding curve to be inserted into the outer lid. A lock piece is provided on the tip wall, and the lock piece is inserted into the outer insertion piece, including an inner insertion piece which is overlapped on the back surface of the piece to form a double wall structure. The hole is formed along the outer folding curve, and the inner folding curve is formed at a position shifted to the side of the inner insertion piece from both ends thereof at least in the insertion range corresponding to the lock hole. In the state where the inner insertion piece is bent along the inner folding curve, the insertion range has a gap for guiding the lock piece penetrating the lock hole between the outer lid wall and the inner lid wall. A plug-in introduction portion is formed.

この場合、前記箱体と前記蓋体とは、表面と裏面とを有する厚紙で構成され、前記外蓋壁と前記内蓋壁とは互いに裏面同士を対向させ、前記外差込片と前記内差込片とは互いに裏面同士を対向させることが好ましい。 In this case, the box body and the lid body are made of thick paper having a front surface and a back surface, and the outer lid wall and the inner lid wall face each other on the back surfaces, and the outer insertion piece and the inner surface are opposed to each other. It is preferable that the back surfaces of the insertion pieces face each other.

この場合、前記内差込片は、前記外差込片の先端部に折返線を介して連設され、前記折返線で折り返されることで前記外差込片の裏面に重ねられることが好ましい。 In this case, it is preferable that the inner insertion piece is continuously provided at the tip end portion of the outer insertion piece via a folding line, and is folded back at the folding line so as to be overlapped on the back surface of the outer insertion piece.

この場合、前記内蓋壁の先端部に連設され、前記基端壁に重ねられた基端支持片を更に備え、前記箱体は、前記基端壁と前記先端壁との対向方向に直交する幅方向に対向する一対の側壁を有し、前記基端支持片は、その幅方向の両端部を一対の前記側壁に形成された一対の係合穴に係合させることで前記基端壁に重ねられた状態に保持されることが好ましい。 In this case, a proximal support piece that is continuously provided at the tip of the inner lid wall and is overlapped with the proximal wall is further provided, and the box body is orthogonal to the opposite direction between the proximal wall and the distal wall. The base end support piece has a pair of side walls facing each other in the width direction, and the base end wall is formed by engaging both ends in the width direction with a pair of engaging holes formed in the pair of side walls. It is preferable that the product is held in a state of being stacked on top of each other.

この場合、前記内差込片は前記外差込片に接着され、前記内蓋壁は前記外蓋壁に接着されないことが好ましい。 In this case, it is preferable that the inner insertion piece is adhered to the outer insertion piece and the inner lid wall is not adhered to the outer lid wall.

本発明によれば、蓋体を閉じた状態に保持することができる。 According to the present invention, the lid can be held in a closed state.

本発明の一実施形態に係る包装箱を示す斜視図である。It is a perspective view which shows the packaging box which concerns on one Embodiment of this invention. 本発明の一実施形態に係る包装箱の蓋体を開いた状態を示す斜視図である。It is a perspective view which shows the state which opened the lid body of the packaging box which concerns on one Embodiment of this invention. 本発明の一実施形態に係る包装箱のブランクを示す平面図である。It is a top view which shows the blank of the packaging box which concerns on one Embodiment of this invention. 本発明の一実施形態に係る包装箱のブランクの前壁体を拡大して示す平面図である。It is a top view which shows the front wall body of the blank of the packaging box which concerns on one Embodiment of this invention in an enlarged manner. 本発明の一実施形態に係る包装箱のブランクの蓋体の一部を拡大して示す平面図である。It is a top view which shows the part of the cover body of the blank of the packaging box which concerns on one Embodiment of this invention in an enlarged manner. 本発明の一実施形態に係る包装箱の側壁体を立設させる過程を示す斜視図である。It is a perspective view which shows the process of erection of the side wall body of the packaging box which concerns on one Embodiment of this invention. 本発明の一実施形態に係る包装箱の前壁体を立設させる過程を示す斜視図である。It is a perspective view which shows the process of erection of the front wall body of the packaging box which concerns on one Embodiment of this invention. 本発明の一実施形態に係る包装箱の蓋体を開いた状態を後方から示す斜視図である。It is a perspective view which shows the state which opened the lid body of the packaging box which concerns on one Embodiment of this invention from the rear. 本発明の一実施形態に係る包装箱であって、ロック片をロック穴に差し込む前の状態を示す斜視図である。It is a perspective view which shows the state before inserting the lock piece into a lock hole in the packaging box which concerns on one Embodiment of this invention. 本発明の一実施形態に係る包装箱であって、ロック片をロック穴に差し込む直前の状態を示す断面図である。It is sectional drawing which shows the state just before inserting the lock piece into a lock hole in the packaging box which concerns on one Embodiment of this invention. 本発明の一実施形態に係る包装箱であって、ロック片をロック穴に差し込んだ状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which a lock piece is inserted into a lock hole in a packaging box according to an embodiment of the present invention. 本発明の一実施形態の変形例に係る包装箱のブランクの前壁体を拡大して示す平面図である。It is an enlarged plan view which shows the front wall body of the blank of the packaging box which concerns on the modification of one Embodiment of this invention.

以下、添付の図面を参照しつつ、本発明の実施形態について説明する。なお、図面に示す「Fr」は「前」を示し、「Rr」は「後」を示し、「L」は「左」を示し、「R」は「右」を示し、「U」は「上」を示し、「D」は「下」を示している。左右方向(幅方向)は前後方向(対向方向)に直交し、上下方向は左右方向と前後方向とに直交している。本明細書では方向や位置を示す用語を用いるが、それらの用語は説明の便宜のために用いるものであって、本発明の技術的範囲を限定するものではない。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawing, "Fr" indicates "front", "Rr" indicates "rear", "L" indicates "left", "R" indicates "right", and "U" indicates "U". "Upper" and "D" indicate "lower". The left-right direction (width direction) is orthogonal to the front-rear direction (opposite direction), and the up-down direction is orthogonal to the left-right direction and the front-back direction. Although terms indicating directions and positions are used in the present specification, these terms are used for convenience of explanation and do not limit the technical scope of the present invention.

[包装箱の概要]
図1ないし図5を参照して、実施形態に係る包装箱1の構成について説明する。図1は包装箱1を示す斜視図である。図2は包装箱1の蓋体3を開いた状態を示す斜視図である。図3は包装箱1のブランク5を示す平面図である。図4はブランク5の前壁体12を拡大して示す平面図である。図5はブランク5の蓋体3の一部を拡大して示す平面図である。
[Outline of packaging box]
The configuration of the packaging box 1 according to the embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing a packaging box 1. FIG. 2 is a perspective view showing a state in which the lid 3 of the packaging box 1 is opened. FIG. 3 is a plan view showing the blank 5 of the packaging box 1. FIG. 4 is an enlarged plan view showing the front wall body 12 of the blank 5. FIG. 5 is an enlarged plan view showing a part of the lid 3 of the blank 5.

図1に示すように、包装箱1は、背の低い略直方体状に形成されている。図2に示すように、包装箱1は、上面に開口部2Aを有する箱体2と、箱体2に連設され、開口部2Aを開閉する蓋体3と、を備えている。箱体2と蓋体3とは、表面と裏面とを有する段ボールシート(厚紙)で構成されている。箱体2には、複数の物品(図示せず)が収納される。なお、図示は省略するが、箱体2の表面と蓋体3と表裏両面には、画像や文字等が印刷されている。 As shown in FIG. 1, the packaging box 1 is formed in a short, substantially rectangular parallelepiped shape. As shown in FIG. 2, the packaging box 1 includes a box body 2 having an opening 2A on the upper surface, and a lid 3 connected to the box body 2 to open and close the opening 2A. The box body 2 and the lid body 3 are made of a corrugated cardboard sheet (thick paper) having a front surface and a back surface. A plurality of articles (not shown) are stored in the box body 2. Although not shown, images, characters, and the like are printed on the front surface of the box body 2, the lid body 3, and both the front and back surfaces.

包装箱1は、図3に示すブランク5を組み立てることで形成される。ブランク5は、紙製の段ボールシートを抜型等で打ち抜いて形成されている。ブランク5は、例えば、波状の中しん9Aに表裏に表ライナ9Bと裏ライナ9C(図2参照)とを貼り合せた両面段ボールシートで形成されている。なお、図3ないし図5では、表ライナ9B側を示している。また、図示は省略するが、表ライナ9Bには、画像や文字等が印刷されている。本明細書では、段ボールシートの中しん9Aと平行な方向を「段方向」と呼び、段方向に直交する方向を「流れ方向」と呼ぶこととする。図面に示す「X」は「段方向」を示し、「Y」は「流れ方向」を示している。また、以下のブランク5の説明において、方向や位置を示す用語は、包装箱1を組み立てた状態における方向や位置を指している。 The packaging box 1 is formed by assembling the blank 5 shown in FIG. The blank 5 is formed by punching a paper corrugated cardboard sheet with a die or the like. The blank 5 is formed of, for example, a double-sided corrugated cardboard sheet in which a front liner 9B and a back liner 9C (see FIG. 2) are bonded to the wavy inner shin 9A on the front and back sides. Note that FIGS. 3 to 5 show the front liner 9B side. Although not shown, images, characters, and the like are printed on the table liner 9B. In the present specification, the direction parallel to the corrugated cardboard sheet 9A is referred to as the "step direction", and the direction orthogonal to the step direction is referred to as the "flow direction". “X” shown in the drawing indicates “step direction”, and “Y” indicates “flow direction”. Further, in the following description of the blank 5, the terms indicating the direction and the position refer to the direction and the position in the assembled state of the packaging box 1.

[ブランク]
図3に示すように、ブランク5は、底壁10と、基端壁11と、前壁体12(先端壁)と、一対の側壁体13(側壁)と、4つの折込部14と、蓋体3と、を備えている。
[blank]
As shown in FIG. 3, the blank 5 includes a bottom wall 10, a base end wall 11, a front wall body 12 (tip wall), a pair of side wall bodies 13 (side walls), four folding portions 14, and a lid. It has a body 3.

<底壁、基端壁>
底壁10は、段方向よりも流れ方向に長い略長方形状に形成されている。基端壁11は、第1折曲線L1を介して底壁10の段方向の一端部(後端部)に連設されている。基端壁11は略長方形状に形成され、その段方向の寸法(延出寸法)は底壁10の段方向の寸法よりも短く(例えば1/4程度)設定されている。
<Bottom wall, base end wall>
The bottom wall 10 is formed in a substantially rectangular shape that is longer in the flow direction than in the step direction. The base end wall 11 is continuously provided at one end (rear end) of the bottom wall 10 in the step direction via the first folding curve L1. The base end wall 11 is formed in a substantially rectangular shape, and its step direction dimension (extension dimension) is set shorter than the step direction dimension of the bottom wall 10 (for example, about 1/4).

<前壁体>
図3および図4に示すように、先端壁の一例としての前壁体12は、底壁10の段方向の他端部(前端部)に連設されている。前壁体12は、外前壁12Aと、前額縁部12Bと、内前壁12Cと、を含んでいる。
<Front wall>
As shown in FIGS. 3 and 4, the front wall body 12 as an example of the tip wall is continuously provided at the other end (front end) of the bottom wall 10 in the step direction. The front wall body 12 includes an outer front wall 12A, a front frame portion 12B, and an inner front wall 12C.

(外前壁、前額縁部)
外前壁12Aは、第1折曲線L1を介して底壁10の段方向の他端部に連設されている。外前壁12Aは略長方形状に形成され、その流れ方向の寸法(延出寸法)は基端壁11の延出寸法と略同一である。前額縁部12Bは、第2折曲線L2を介して外前壁12Aの先端部(上端部)に連設されている。前額縁部12Bは流れ方向に細長い略長方形状に形成され、その段方向の寸法(延出寸法)は段ボールシートの厚さよりも僅かに長く設定されている。
(Outer front wall, front frame)
The outer front wall 12A is continuously provided at the other end of the bottom wall 10 in the step direction via the first folding curve L1. The outer front wall 12A is formed in a substantially rectangular shape, and the dimension (extension dimension) in the flow direction thereof is substantially the same as the extension dimension of the base end wall 11. The front frame portion 12B is continuously provided at the tip end portion (upper end portion) of the outer front wall 12A via the second folding curve L2. The front frame portion 12B is formed in a substantially rectangular shape elongated in the flow direction, and the dimension (extension dimension) in the step direction is set to be slightly longer than the thickness of the corrugated cardboard sheet.

(内前壁)
内前壁12Cは、第2折曲線L2を介して前額縁部12Bの先端部(段方向の他端部)に連設されている。換言すれば、内前壁12Cは、前額縁部12Bを介して外前壁12Aに連設されている。内前壁12Cは、外前壁12Aと略同じ大きさとなる略長方形状に形成されている。内前壁12Cの流れ方向の中央部には、略半円状の指掛け部12Dが先端から基端に向けて切り欠かれている。内前壁12Cの流れ方向両端の先端側には、一対の前方凸部42Aが突設されている。
(Inner front wall)
The inner front wall 12C is continuously provided at the tip end portion (the other end portion in the step direction) of the front frame portion 12B via the second folding curve L2. In other words, the inner front wall 12C is connected to the outer front wall 12A via the front frame portion 12B. The inner front wall 12C is formed in a substantially rectangular shape having substantially the same size as the outer front wall 12A. A substantially semicircular finger hook portion 12D is cut out from the tip end to the base end in the central portion of the inner front wall 12C in the flow direction. A pair of front convex portions 42A are provided so as to project from the tip sides of both ends of the inner front wall 12C in the flow direction.

(ロック片)
図4に示すように、前壁体12の中央領域には、ロック片20が設けられている。ロック片20は、外前壁12Aの段方向の中間から前額縁部12Bを横断して内前壁12Cの段方向の中間まで延びた略U字状の切断線21によって区画されている。ロック片20は、全体として略U字状(舌状)に形成され、第1係止折線L11を介して外前壁12Aに連設されている。また、ロック片20には、外前壁12Aと前額縁部12Bとの境界線(第2折曲線L2)と略同一直線を成す第2係止折線L12が形成されている。
(Lock piece)
As shown in FIG. 4, a lock piece 20 is provided in the central region of the front wall body 12. The lock piece 20 is partitioned by a substantially U-shaped cutting line 21 extending from the middle of the outer front wall 12A in the step direction to the middle of the inner front wall 12C in the step direction across the front frame portion 12B. The lock piece 20 is formed in a substantially U shape (tongue shape) as a whole, and is connected to the outer front wall 12A via the first locking folding line L11. Further, the lock piece 20 is formed with a second locking folding line L12 forming substantially the same straight line as the boundary line (second folding curve L2) between the outer front wall 12A and the front frame portion 12B.

ロック片20は、第1係止折線L11から第2係止折線L12までの間に形成された支持片20Aと、第2係止折線L12よりも先端側の突設された差込片20Bと、を含んでいる。差込片20Bは、支持片20Aよりも流れ方向に幅狭く形成されている。差込片20Bの基端部(支持片20Aの側)には、一対の凹部22が流れ方向の両端から互いに接近するように凹設されている。また、差込片20Bには、第2係止折線L12から先端側に膨出するようにアーチ状の切目23が形成されている。 The lock piece 20 includes a support piece 20A formed between the first locking fold line L11 and the second locking fold line L12, and an insertion piece 20B projecting from the tip side of the second locking fold line L12. , Including. The insertion piece 20B is formed to be narrower in the flow direction than the support piece 20A. A pair of recesses 22 are recessed in the base end portion (side of the support piece 20A) of the insertion piece 20B so as to approach each other from both ends in the flow direction. Further, the insertion piece 20B is formed with an arch-shaped cut 23 so as to bulge toward the tip side from the second locking folding line L12.

<側壁体>
図3に示すように、一対の側壁の一例としての一対の側壁体13は、底壁10の流れ方向の両端部(左右両端部)に連設されている。一対の側壁体13は、それぞれ、外側壁13Aと、側額縁部13Bと、内側壁13Cと、内包片13Dと、を含んでいる。なお、一対の側壁体13は底壁10を中心として対称に配置されているため、以下、1つの側壁体13の構成について説明する。
<Wall body>
As shown in FIG. 3, the pair of side wall bodies 13 as an example of the pair of side walls are connected to both ends (left and right ends) of the bottom wall 10 in the flow direction. The pair of side wall bodies 13 includes an outer wall 13A, a side frame portion 13B, an inner side wall 13C, and an inclusion piece 13D, respectively. Since the pair of side wall bodies 13 are arranged symmetrically with respect to the bottom wall 10, the configuration of one side wall body 13 will be described below.

(外側壁、側額縁部)
外側壁13Aは、第3折曲線L3を介して底壁10の流れ方向の端部に連設されている。外側壁13Aは略長方形状に形成され、その段方向の寸法(延出寸法)は基端壁11の延出寸法と略同一である。側額縁部13Bは、第4折曲線L4を介して外側壁13Aの先端部(上端部)に連設されている。側額縁部13Bは段方向に細長い略長方形状に形成され、その流れ方向の寸法(延出寸法)は段ボールシートの厚さよりも僅かに長く設定されている。なお、底壁10の段方向の一方寄りには、第3折曲線L3に沿って長方形状の底面穴41Bが開口している。
(Outer wall, side frame)
The outer side wall 13A is continuously provided at the end of the bottom wall 10 in the flow direction via the third folding curve L3. The outer side wall 13A is formed in a substantially rectangular shape, and its dimension in the step direction (extension dimension) is substantially the same as the extension dimension of the base end wall 11. The side frame portion 13B is continuously provided at the tip end portion (upper end portion) of the outer wall 13A via the fourth folding curve L4. The side frame portion 13B is formed in a substantially rectangular shape elongated in the step direction, and its flow direction dimension (extension dimension) is set to be slightly longer than the thickness of the corrugated cardboard sheet. A rectangular bottom hole 41B is opened along the third folding curve L3 on one side of the bottom wall 10 in the step direction.

(内側壁)
内側壁13Cは、第4折曲線L4を介して側額縁部13Bの先端部に連設されている。換言すれば、内側壁13Cは、側額縁部13Bを介して外側壁13Aに連設されている。内側壁13Cは、外側壁13Aと略同じ大きさとなる略長方形状に形成されている。内側壁13Cの段方向の一方寄り(底面穴41Bに対応する位置)には、略台形状の側方凸部41Aが先端から突設されている。内側壁13Cの段方向の一端(後端)には、先端側を略長方形状に切り欠くことで後方係合穴40Bが形成されている。
(Inner side wall)
The inner side wall 13C is continuously provided at the tip of the side frame portion 13B via the fourth folding curve L4. In other words, the inner side wall 13C is connected to the outer wall 13A via the side frame portion 13B. The inner side wall 13C is formed in a substantially rectangular shape having substantially the same size as the outer wall 13A. A substantially trapezoidal lateral convex portion 41A is projected from the tip on one side of the inner side wall 13C in the step direction (position corresponding to the bottom hole 41B). A rear engaging hole 40B is formed at one end (rear end) of the inner side wall 13C in the step direction by cutting out the tip side in a substantially rectangular shape.

(内包片)
内包片13Dは、第5折曲線L5を介して内側壁13Cの段方向の他端部に連設されている。内包片13Dは、基端よりも先端が幅狭い略台形状(正確には略五角形状)に形成されている。内包片13Dの段方向の寸法(延出寸法)は外前壁12Aの延出寸法よりも短く設定されている。内包片13Dの流れ方向の先端側には、第5折曲線L5から内側壁13Cの側に食い込むように支持凸部24が形成されている。詳細には、支持凸部24は、第5折曲線L5から分岐して略L字状に形成された切断線25によって区画されている。詳細は後述するが、支持凸部24が切断線25に沿って切断されることで、内側壁13Cには前方係合穴42Bが開口する。なお、支持凸部24には第5折曲線L5は形成されていない。
(Inclusive piece)
The inclusion piece 13D is continuously provided at the other end of the inner side wall 13C in the step direction via the fifth folding curve L5. The inclusion piece 13D is formed in a substantially trapezoidal shape (to be exact, a substantially pentagonal shape) whose tip is narrower than the base end. The dimension (extended dimension) of the inclusion piece 13D in the step direction is set shorter than the extending dimension of the outer front wall 12A. A support convex portion 24 is formed on the tip end side of the inclusion piece 13D in the flow direction so as to bite into the inner side wall 13C side from the fifth folding curve L5. Specifically, the support convex portion 24 is partitioned by a cutting line 25 branched from the fifth folding curve L5 and formed in a substantially L shape. Although the details will be described later, the front engaging hole 42B is opened in the inner side wall 13C by cutting the support convex portion 24 along the cutting line 25. The fifth folding curve L5 is not formed on the support convex portion 24.

<折込部>
4つの折込部14は、基端壁11と一対の外側壁13Aとで構成される2つの角領域、および外前壁12Aと一対の外側壁13Aとで構成される2つの角領域に設けられている。段方向の一方に位置する2つの折込部14は、第6折曲線L6を介して基端壁11と一対の外側壁13Aとに連設されている。段方向の他方に位置する2つの折込部14は、第6折曲線L6を介して外前壁12Aと一対の外側壁13Aとに連設されている。各折込部14は、略菱形状に形成されている。各折込部14には、底壁10の角部(第1折曲線L1と第3折曲線L3との交点)の近傍から放射方向外側に向かって斜めに折込線L7が延設されている。
<Folding part>
The four folding portions 14 are provided in two corner regions composed of the base end wall 11 and a pair of outer walls 13A, and two corner regions composed of an outer front wall 12A and a pair of outer walls 13A. ing. The two folding portions 14 located on one side in the step direction are connected to the base end wall 11 and the pair of outer walls 13A via the sixth folding curve L6. The two folding portions 14 located on the other side in the step direction are connected to the outer front wall 12A and the pair of outer walls 13A via the sixth folding curve L6. Each folding portion 14 is formed in a substantially rhombic shape. In each folding portion 14, a folding line L7 extends diagonally from the vicinity of the corner portion of the bottom wall 10 (the intersection of the first folding curve L1 and the third folding curve L3) toward the outside in the radial direction.

なお、詳細は後述するが、底壁10、基端壁11、前壁体12、各側壁体13および各折込部14は、上面に開口部2Aを有する箱体2を構成する。また、第1〜第6折曲線L1〜L6および第1〜第2係止折線L11,L12は、段ボールシートを裏ライナ9C側から厚み方向に直線状に潰した汎用罫線である。汎用罫線は、主に、裏ライナ9Cを内側に向けるように段ボールシートを折曲させる(正折りする)機能を有している。折込線L7は、段ボールシートを表ライナ9B側から厚み方向に直線状に潰した逆罫線上に複数の切目を入れたリード罫線である。逆罫線上に切目を入れたリード罫線は、表ライナ9Bを内側に向けるように段ボールシートを折曲させる(逆折りする)機能を有している。これらの第1〜第5折曲線L1〜L5等の形式は、汎用罫線やリード罫線に限らず、ミシン刃線や汎用罫線上に複数の切目を入れたリード罫線等、段ボールシートを折り曲げるための線であれば如何なるものでもよい。 Although details will be described later, the bottom wall 10, the base end wall 11, the front wall body 12, each side wall body 13, and each folding portion 14 constitute a box body 2 having an opening 2A on the upper surface. The first to sixth folding curves L1 to L6 and the first to second locking folding lines L11 and L12 are general-purpose ruled lines obtained by crushing a corrugated cardboard sheet linearly from the back liner 9C side in the thickness direction. The general-purpose ruled line mainly has a function of bending (normally folding) the corrugated cardboard sheet so that the back liner 9C faces inward. The folding line L7 is a lead ruled line in which a plurality of cuts are made on a reverse ruled line obtained by crushing a corrugated cardboard sheet linearly in the thickness direction from the front liner 9B side. The lead ruled line with a notch on the reverse ruled line has a function of bending (reverse folding) the corrugated cardboard sheet so that the front liner 9B faces inward. These first to fifth folding curves L1 to L5 and the like are not limited to general-purpose ruled lines and lead ruled lines, but are used for bending corrugated cardboard sheets such as sewing machine blade lines and lead ruled lines with a plurality of cuts on the general-purpose ruled lines. Any line can be used.

<蓋体>
図3に示すように、蓋体3は、外蓋壁30と、外差込片31と、内差込片32と、内蓋壁33と、基端支持片34と、を含んでいる。
<Lid body>
As shown in FIG. 3, the lid body 3 includes an outer lid wall 30, an outer insertion piece 31, an inner insertion piece 32, an inner lid wall 33, and a base end support piece 34.

(外蓋壁)
外蓋壁30は、外開閉線L21を介して基端壁11の段方向の一端部に連設されている。外蓋壁30は、底壁10と略同じ大きさとなる略長方形状に形成されている。外蓋壁30は、開口部2Aの縁部である箱体2の基端壁11の先端部(上端部)に連設され、開口部2Aを閉塞可能に形成されている(図1および図2参照)。
(Outer lid wall)
The outer lid wall 30 is continuously provided at one end of the base end wall 11 in the step direction via the outer opening / closing line L21. The outer lid wall 30 is formed in a substantially rectangular shape having substantially the same size as the bottom wall 10. The outer lid wall 30 is continuously provided at the tip end portion (upper end portion) of the base end wall 11 of the box body 2 which is the edge portion of the opening portion 2A, and is formed so as to be able to close the opening portion 2A (FIGS. 1 and FIG. 2).

(外差込片)
外差込片31は、外折曲線L22を介して外蓋壁30の先端部(段方向の一端部)に連設されている。外差込片31は略長方形状に形成されており、その段方向の寸法(延出寸法)は基端壁11の延出寸法よりも短く設定されている。また、外差込片31の流れ方向(左右方向)の寸法は、外蓋壁30の流れ方向の寸法よりも僅かに短く設定されている。外差込片31には、ロック片20が差し込まれるロック穴35が外折曲線L22に沿って形成されている。ロック穴35は、ロック片20に対応するように、外差込片31の流れ方向(左右方向)の略中央部に形成されている。ロック穴35は、外折曲線L22から外差込片31の側に突出した略台形状のスリットである。
(External plug)
The outer insertion piece 31 is continuously provided at the tip end portion (one end portion in the step direction) of the outer lid wall 30 via the outer folding curve L22. The outer insertion piece 31 is formed in a substantially rectangular shape, and its dimension in the step direction (extension dimension) is set shorter than the extension dimension of the base end wall 11. Further, the dimension of the outer insertion piece 31 in the flow direction (left-right direction) is set to be slightly shorter than the dimension of the outer lid wall 30 in the flow direction. A lock hole 35 into which the lock piece 20 is inserted is formed in the outer insertion piece 31 along the outer folding curve L22. The lock hole 35 is formed at a substantially central portion in the flow direction (left-right direction) of the outer insertion piece 31 so as to correspond to the lock piece 20. The lock hole 35 is a substantially trapezoidal slit protruding from the outer folding curve L22 toward the outer insertion piece 31.

(内差込片)
内差込片32は、折返線L23を介して外差込片31の先端部(段方向の一端部)に連設されている。内差込片32は、折返線L23を中心に外差込片31と線対称となる形状である。なお、詳細は後述するが、外差込片31の裏ライナ9Cには接着剤を塗布する一対の接着領域36が設定されており、内差込片32は接着剤を介して外差込片31に接着される。一対の接着領域36は、ロック穴35から流れ方向(左右方向)の両外側に離れた位置に設定されている。
(Internal insertion piece)
The inner insertion piece 32 is continuously provided at the tip end portion (one end portion in the step direction) of the outer insertion piece 31 via the turnaround line L23. The inner insertion piece 32 has a shape that is line-symmetric with the outer insertion piece 31 centering on the folding line L23. Although the details will be described later, a pair of adhesive regions 36 for applying an adhesive are set on the back liner 9C of the outer insertion piece 31, and the inner insertion piece 32 is an outer insertion piece via an adhesive. It is adhered to 31. The pair of adhesive regions 36 are set at positions separated from the lock hole 35 on both outer sides in the flow direction (left-right direction).

(内蓋壁)
内蓋壁33は、内折曲線L24を介して内差込片32の先端部(段方向の一端部)に連設されている。内蓋壁33は、外蓋壁30と略同じ大きさとなる略長方形状に形成されている。
(Inner lid wall)
The inner lid wall 33 is continuously provided at the tip end portion (one end portion in the step direction) of the inner insertion piece 32 via the inner folding curve L24. The inner lid wall 33 is formed in a substantially rectangular shape having substantially the same size as the outer lid wall 30.

(内折曲線)
図5に示すように、内折曲線L24は、流れ方向(左右方向)の中央部が内差込片32に向かって突き出すように屈曲している。詳細には、内折曲線L24は、一対の側方折線部L24Aと、導入折線部L24Bと、一対の連結折線部L24Cと、を含んでいる。
(Inner fold curve)
As shown in FIG. 5, the inward folding curve L24 is bent so that the central portion in the flow direction (left-right direction) protrudes toward the inward insertion piece 32. Specifically, the inward folding curve L24 includes a pair of side folding line portions L24A, an introduction folding line portion L24B, and a pair of connecting folding line portions L24C.

一対の側方折線部L24Aは、内蓋壁33(内差込片32)の流れ方向の両端から互いに接近するように流れ方向に沿って延設されている。一対の側方折線部L24Aは、ロック穴35に対応(対向)した差込範囲37を挟んで流れ方向に並設されている。なお、差込範囲37とはロック穴35に対応した範囲であって、差込範囲37の流れ方向の寸法はロック穴35の流れ方向の寸法と同一に設定されている。本実施形態では、一対の側方折線部L24Aの間隔は、差込範囲37(ロック穴35)の流れ方向の寸法よりも大きく設定されている。 The pair of side folding line portions L24A extend along the flow direction so as to approach each other from both ends of the inner lid wall 33 (inner insertion piece 32) in the flow direction. The pair of side folding line portions L24A are arranged side by side in the flow direction with the insertion range 37 corresponding to (opposing) the lock hole 35 interposed therebetween. The insertion range 37 is a range corresponding to the lock hole 35, and the dimension of the insertion range 37 in the flow direction is set to be the same as the dimension of the lock hole 35 in the flow direction. In the present embodiment, the distance between the pair of side folding line portions L24A is set to be larger than the dimension of the insertion range 37 (lock hole 35) in the flow direction.

導入折線部L24Bは、一対の側方折線部L24Aの間において流れ方向に沿って延設されている。導入折線部L24Bの流れ方向の寸法は、差込範囲37(ロック穴35)の流れ方向の寸法よりも長く設定されている。導入折線部L24Bは、一対の側方折線部L24Aよりも段方向の他方(内差込片32の側)にずれた位置に形成されている。換言すれば、少なくともロック穴35に対応した差込範囲37において内折曲線L24は、その両端よりも内差込片32の側にずれた位置に形成されている。各側方折線部L24Aからの導入折線部L24Bのずれ量Gは、段ボールシートの厚みと略同一に(または段ボールシートの厚みよりも僅かに短く)設定されている。具体的には、本実施形態では、導入折線部L24Bのずれ量Gは2mmに設定されている。 The introduction folding line portion L24B extends along the flow direction between the pair of side folding line portions L24A. The size of the introduction folding line portion L24B in the flow direction is set longer than the size of the insertion range 37 (lock hole 35) in the flow direction. The introduction folding line portion L24B is formed at a position deviated from the pair of side folding line portions L24A to the other side in the step direction (the side of the internal insertion piece 32). In other words, the inward folding curve L24 is formed at a position shifted from both ends to the side of the inward insertion piece 32 in the insertion range 37 corresponding to at least the lock hole 35. The amount of deviation G of the introduction folding line portion L24B from each side folding line portion L24A is set to be substantially the same as the thickness of the corrugated cardboard sheet (or slightly shorter than the thickness of the corrugated cardboard sheet). Specifically, in the present embodiment, the deviation amount G of the introduction folding line portion L24B is set to 2 mm.

一対の連結折線部L24Cは、一対の側方折線部L24Aと導入折線部L24Bとを連結している。詳細には、一対の連結折線部L24Cは、一対の側方折線部L24Aの流れ方向の中央側の端部から導入折線部L24Bの流れ方向の両端部まで延設されている。また、一対の連結折線部L24Cは、側方折線部L24Aから導入折線部L24Bに向かって互いに接近するように傾斜している。 The pair of connecting fold line portions L24C connects the pair of side fold line portions L24A and the introduction fold line portion L24B. Specifically, the pair of connecting fold line portions L24C extend from the central end portion of the pair of side fold line portions L24A in the flow direction to both ends of the introduction fold line portion L24B in the flow direction. Further, the pair of connecting fold line portions L24C are inclined so as to approach each other from the side fold line portion L24A toward the introduction fold line portion L24B.

(基端支持片)
図3に示すように、基端支持片34は、内開閉線L25を介して内蓋壁33の先端部に連設されている。基端支持片34は、基端壁11と略同じ大きさとなる略長方形状に形成されている。基端支持片34の流れ方向両端の先端側には、一対の後方凸部40Aが突設されている。
(Base end support piece)
As shown in FIG. 3, the base end support piece 34 is continuously provided at the tip end portion of the inner lid wall 33 via the inner opening / closing line L25. The base end support piece 34 is formed in a substantially rectangular shape having substantially the same size as the base end wall 11. A pair of rear convex portions 40A are provided so as to project from the tip sides of both ends of the base end support piece 34 in the flow direction.

なお、外開閉線L21および外折曲線L22は汎用罫線であり、折返線L23は汎用罫線上に複数の切目を入れたリード罫線であり、内折曲線L24および内開閉線L25は逆罫線である。汎用罫線上に切目を入れたリード罫線は、段ボールシートを正折りする機能を有している。逆罫線は、段ボールシートを逆折りする機能を有している。これらの線L21〜L25の形式は、上記に限らず、ミシン刃線等、段ボールシートを折り曲げるための線であれば如何なるものでもよい。 The outer opening / closing line L21 and the outer opening / closing curve L22 are general-purpose ruled lines, the folding line L23 is a lead ruled line having a plurality of cuts on the general-purpose ruled line, and the inner opening / closing curve L24 and the inner opening / closing line L25 are reverse ruled lines. .. The reed ruled line with a notch on the general-purpose ruled line has a function of folding the corrugated cardboard sheet forward. The reverse ruled line has a function of reverse folding the corrugated cardboard sheet. The types of these lines L21 to L25 are not limited to the above, and may be any line such as a sewing machine blade line for bending a corrugated cardboard sheet.

[包装箱の組立]
次に、図2、図6ないし図8を参照して、包装箱1の組立工程について説明する。図6は包装箱1の側壁体13を立設させる過程を示す斜視図である。図7は包装箱1の前壁体12を立設させる過程を示す斜視図である。図8は包装箱1の蓋体3を開いた状態を後方から示す斜視図である。
[Assembly of packaging box]
Next, the assembly process of the packaging box 1 will be described with reference to FIGS. 2, 6 to 8. FIG. 6 is a perspective view showing a process of erecting the side wall body 13 of the packaging box 1. FIG. 7 is a perspective view showing a process of erecting the front wall body 12 of the packaging box 1. FIG. 8 is a perspective view showing a state in which the lid 3 of the packaging box 1 is opened from the rear.

包装箱1は、例えば、作業者によって手作業で組み立てられる。まず、作業者は、外差込片31の一対の接着領域36(裏ライナ9C)に接着剤を塗布し、内差込片32を折返線L23に沿って折り返して外差込片31に接着する。図6に示すように、内差込片32は、折返線L23で折り返されることで外差込片31の裏面(裏ライナ9C)に重ねられて二重壁構造を構成する。外差込片31は外折曲線L22で屈曲し(正折りされ)、内差込片32は内折曲線L24で屈曲して(逆折りされて)外差込片31の裏面に重なっている。なお、外折曲線L22と内折曲線L24とは略重なっている。また、内差込片32を折り返すと、内蓋壁33は、外蓋壁30の裏面に重ねられて二重壁構造を構成する。なお、内蓋壁33は、外蓋壁30に接着されない。 The packaging box 1 is, for example, manually assembled by an operator. First, the operator applies an adhesive to the pair of adhesive regions 36 (back liner 9C) of the outer insertion piece 31, folds the inner insertion piece 32 along the folding line L23, and adheres it to the outer insertion piece 31. To do. As shown in FIG. 6, the inner insertion piece 32 is folded back along the folding line L23 and is overlapped with the back surface (back liner 9C) of the outer insertion piece 31 to form a double wall structure. The outer insertion piece 31 is bent (normally folded) along the outer folding curve L22, and the inner insertion piece 32 is bent (reversely folded) along the inner folding curve L24 and overlaps the back surface of the outer insertion piece 31. .. The outer fold curve L22 and the inner fold curve L24 substantially overlap each other. Further, when the inner plug piece 32 is folded back, the inner lid wall 33 is overlapped with the back surface of the outer lid wall 30 to form a double wall structure. The inner lid wall 33 is not adhered to the outer lid wall 30.

なお、接着剤としては、ホットメルト接着剤、エマルジョン系接着剤または両面テープ等を用いることができる。また、本実施形態では、接着領域36が外差込片31の裏ライナ9Cに設定されていたが、これに代えて、接着領域36が内差込片32の裏ライナ9Cに設定されていてもよい。 As the adhesive, a hot melt adhesive, an emulsion adhesive, a double-sided tape, or the like can be used. Further, in the present embodiment, the adhesive region 36 is set to the back liner 9C of the outer insertion piece 31, but instead, the adhesive region 36 is set to the back liner 9C of the inner insertion piece 32. May be good.

続いて、図6に示すように、作業者は、基端壁11を第1折曲線L1に沿って折り曲げて立設させる。また、作業者は、後方の一対の折込部14を折込線L7に沿って内側に折り込みながら、一対の外側壁13Aを第3折曲線L3に沿って折り曲げて立設させる。 Subsequently, as shown in FIG. 6, the operator bends the base end wall 11 along the first folding curve L1 and erects it. Further, the operator folds the pair of outer walls 13A along the third folding curve L3 while folding the pair of rear folding portions 14 inward along the folding line L7.

次に、図7に示すように、作業者は、一対の側額縁部13Bと一対の内側壁13Cとを第4折曲線L4に沿って内側に折り返し、一対の内側壁13Cの側方凸部41Aを底壁10の一対の底面穴41Bに嵌め込む。内側壁13Cは、僅かな隙間を挟んで外側壁13Aに対向して二重壁構造を構成する。後方の折込部14は、外側壁13Aと内側壁13Cとの間に挟持されている。側方凸部41Aが底面穴41Bに係合することで、二重壁構造を成す側壁体13が起立姿勢に保持される。以上によって、一対の側壁体13は、底壁10を挟んで左右方向に対向配置される。 Next, as shown in FIG. 7, the operator folds the pair of side frame portions 13B and the pair of inner side walls 13C inward along the fourth folding curve L4, and the lateral convex portions of the pair of inner side walls 13C. The 41A is fitted into the pair of bottom holes 41B of the bottom wall 10. The inner side wall 13C forms a double wall structure facing the outer wall 13A with a slight gap in between. The rear folding portion 14 is sandwiched between the outer wall 13A and the inner side wall 13C. By engaging the lateral convex portion 41A with the bottom surface hole 41B, the side wall body 13 forming the double wall structure is held in the upright posture. As described above, the pair of side wall bodies 13 are arranged so as to face each other in the left-right direction with the bottom wall 10 interposed therebetween.

続いて、図7に示すように、作業者は、基端支持片34を内開閉線L25に沿って下方に折り曲げて一対の側壁体13の間に押し込み、基端支持片34の一対の後方凸部40Aを一対の内側壁13Cの後方係合穴40Bに嵌め込む。後方凸部40Aが後方係合穴40Bに係合することで、基端支持片34は基端壁11の裏面に重ねられた状態に保持される。なお、後方凸部40Aは、僅かに上下方向にスライドする状態で後方係合穴40Bに係合している。また、外開閉線L21と内開閉線L25とは略重なっている。 Subsequently, as shown in FIG. 7, the operator bends the proximal end support piece 34 downward along the inner opening / closing line L25 and pushes it between the pair of side wall bodies 13, and then pushes the proximal end support piece 34 between the pair of side wall bodies 13, and the pair of rear portions of the proximal end support piece 34. The convex portion 40A is fitted into the rear engaging hole 40B of the pair of inner side walls 13C. By engaging the rear convex portion 40A with the rear engaging hole 40B, the base end support piece 34 is held in a state of being overlapped on the back surface of the base end wall 11. The rear convex portion 40A is engaged with the rear engaging hole 40B in a state of slightly sliding in the vertical direction. Further, the outer opening / closing line L21 and the inner opening / closing line L25 substantially overlap each other.

図7に示すように、作業者は、一対の内包片13Dを第5折曲線L5に沿って内側に折り曲げる。すると、支持凸部24が内側壁13Cから刳り貫かれて、内側壁13Cには前方係合穴42Bが開口する。なお、支持凸部24の先端は、外側壁13Aの裏面に当接する。作業者は、前方の一対の折込部14を折込線L7に沿って内側に折り込みながら、一対の外前壁12Aを第1折曲線L1に沿って折り曲げて立設させる。 As shown in FIG. 7, the operator bends the pair of inclusion pieces 13D inward along the fifth folding curve L5. Then, the support convex portion 24 is hollowed out from the inner side wall 13C, and the front engaging hole 42B is opened in the inner side wall 13C. The tip of the support convex portion 24 comes into contact with the back surface of the outer wall 13A. The operator folds the pair of outer front walls 12A along the first folding curve L1 while folding the pair of front folding portions 14 inward along the folding line L7.

次に、図8に示すように、作業者は、前額縁部12Bと内前壁12Cとを第2折曲線L2に沿って内側に折り返し、内前壁12Cの一対の前方凸部42Aを内側壁13Cの一対の前方係合穴42Bに嵌め込む。内前壁12Cは、僅かな隙間を挟んで外前壁12Aに対向して二重壁構造を構成する。内包片13Dおよび前方の折込部14は、外前壁12Aと内前壁12Cとの間に挟持されている。前方凸部42Aが前方係合穴42Bに係合することで、二重壁構造を成す前壁体12が起立姿勢に保持される。以上によって、基端壁11と前壁体12とは、底壁10を挟んで前後方向に対向配置される。なお、前額縁部12Bと内前壁12Cとを折り返すと、ロック片20の差込片20Bは、前額縁部12Bおよび内前壁12Cから刳り貫かれ、外前壁12Aから上方に延設された状態になる。 Next, as shown in FIG. 8, the operator folds the front frame portion 12B and the inner front wall 12C inward along the second folding curve L2, and the pair of front convex portions 42A of the inner front wall 12C is inside. It is fitted into a pair of front engaging holes 42B of the wall 13C. The inner front wall 12C forms a double wall structure facing the outer front wall 12A with a slight gap in between. The inclusion piece 13D and the front folding portion 14 are sandwiched between the outer front wall 12A and the inner front wall 12C. By engaging the front convex portion 42A with the front engaging hole 42B, the front wall body 12 forming the double wall structure is held in the upright posture. As described above, the base end wall 11 and the front wall body 12 are arranged so as to face each other in the front-rear direction with the bottom wall 10 interposed therebetween. When the front frame portion 12B and the inner front wall 12C are folded back, the insertion piece 20B of the lock piece 20 is hollowed out from the front frame portion 12B and the inner front wall 12C, and extends upward from the outer front wall 12A. It will be in a state of being.

以上によって、上面に開口部2Aを開口させた箱体2(蓋体3を開いた包装箱1)が完成する(図2および図8参照)。箱体2の全表面と底壁10を除く箱体2の内面(裏面)とには表ライナ9Bが表れている。また、蓋体3の表裏両面にも表ライナ9Bが表れている。 As described above, the box body 2 (packaging box 1 with the lid 3 opened) having the opening 2A opened on the upper surface is completed (see FIGS. 2 and 8). The front liner 9B appears on the entire front surface of the box body 2 and the inner surface (back surface) of the box body 2 excluding the bottom wall 10. The front liner 9B also appears on both the front and back surfaces of the lid 3.

[包装箱の封緘]
次に、図1、図9ないし図11を参照して、包装箱1の封緘工程について説明する。図9はロック片20をロック穴35に差し込む前の状態を示す斜視図である。図10はロック片20をロック穴35に差し込む直前の状態を示す断面図である。図11はロック片20をロック穴35に差し込んだ状態を示す断面図である。
[Seal of packaging box]
Next, the sealing process of the packaging box 1 will be described with reference to FIGS. 1, 9 to 11. FIG. 9 is a perspective view showing a state before the lock piece 20 is inserted into the lock hole 35. FIG. 10 is a cross-sectional view showing a state immediately before inserting the lock piece 20 into the lock hole 35. FIG. 11 is a cross-sectional view showing a state in which the lock piece 20 is inserted into the lock hole 35.

作業者は、物品を箱体2の内部に収納し(底壁10上に配置し)、蓋体3を閉じる(図9参照)。具体的には、作業者は、二重壁を構成する外蓋壁30と内蓋壁33とを外開閉線L21と内開閉線L25とを軸に下方に回動させ、二重壁を構成する外差込片31と内差込片32とを外折曲線L22と内折曲線L24とで下方に屈曲させて箱体2の内側に差し込む。外差込片31は、外折曲線L22で屈曲して箱体2の内部に差し込まれた状態で前壁体12(内前壁12C)に重ねられる(図10参照)。この状態で、外蓋壁30と内蓋壁33とは、箱体2の開口部2Aを閉塞している。なお、内蓋壁33は外蓋壁30に接着されず外蓋壁30に沿ってスライド可能であり、基端支持片34は基端壁11に接着されず基端壁11に沿ってスライド可能であるため、二重壁構造を成す蓋体3の屈曲部分での表裏の長さの差を吸収することができる。これにより、二重壁構造を成す蓋体3を円滑に閉閉することができる。 The operator stores the article inside the box 2 (placed on the bottom wall 10) and closes the lid 3 (see FIG. 9). Specifically, the operator rotates the outer lid wall 30 and the inner lid wall 33 constituting the double wall downward around the outer opening / closing line L21 and the inner opening / closing line L25 to form the double wall. The outer insertion piece 31 and the inner insertion piece 32 are bent downward at the outer folding curve L22 and the inner folding curve L24 and inserted into the box body 2. The outer insertion piece 31 is stacked on the front wall body 12 (inner front wall 12C) in a state of being bent at the outer folding curve L22 and being inserted into the inside of the box body 2 (see FIG. 10). In this state, the outer lid wall 30 and the inner lid wall 33 close the opening 2A of the box body 2. The inner lid wall 33 is not adhered to the outer lid wall 30 and can slide along the outer lid wall 30, and the proximal end support piece 34 is not adhered to the proximal end wall 11 and can slide along the proximal end wall 11. Therefore, it is possible to absorb the difference in length between the front and back surfaces at the bent portion of the lid 3 forming the double wall structure. As a result, the lid 3 forming the double wall structure can be smoothly closed and closed.

図9に示すように、外差込片31が外折曲線L22で下方に屈曲した状態において、外差込片31には、外折曲線L22に沿って略台形状のロック穴35が開口する。また、図10に示すように、内折曲線L24の導入折線部L24Bは差込範囲37で内差込片32の側にずれているため、内差込片32が内折曲線L24(導入折線部L24B)で下方に屈曲すると、差込範囲37では内蓋壁33の先端部(前端部)が内差込片32の側(下方)に引っ張られて外蓋壁30から僅かに離間する。このように、差込範囲37において外蓋壁30と内蓋壁33との間には僅かな隙間(本明細書では「差込導入部38」という。)が形成される。 As shown in FIG. 9, in a state where the outer insertion piece 31 is bent downward along the outer folding curve L22, a substantially trapezoidal lock hole 35 is opened in the outer insertion piece 31 along the outer folding curve L22. .. Further, as shown in FIG. 10, since the introduction folding line portion L24B of the inner folding curve L24 is displaced toward the inner insertion piece 32 in the insertion range 37, the inner insertion piece 32 is the inner folding curve L24 (introduction folding line). When the portion L24B) is bent downward, the tip end portion (front end portion) of the inner lid wall 33 is pulled toward the inner plug piece 32 side (downward) in the insertion range 37, and is slightly separated from the outer lid wall 30. As described above, a slight gap (referred to as "insertion introduction portion 38" in the present specification) is formed between the outer lid wall 30 and the inner lid wall 33 in the insertion range 37.

次に、図10に示すように、作業者は、ロック片20の支持片20Aを第1係止折線L11で前方に倒しながら、ロック片20の差込片20Bを第2係止折線L12で下方(後方)に折り曲げ、差込片20Bの先端部をロック穴35に向ける。そして、作業者は、第1係止折線L11を中心としてロック片20を後方に回動させながら(押し込みながら)、差込片20Bの先端部をロック穴35に差し込む。差込片20Bの先端部は、ロック穴35を貫通して差込導入部38に進入する。 Next, as shown in FIG. 10, the operator tilts the support piece 20A of the lock piece 20 forward at the first locking fold line L11, while pushing the insertion piece 20B of the lock piece 20 at the second locking fold line L12. Bend downward (rear) so that the tip of the insertion piece 20B faces the lock hole 35. Then, the operator inserts the tip end portion of the insertion piece 20B into the lock hole 35 while rotating (pushing) the lock piece 20 backward around the first locking folding line L11. The tip of the insertion piece 20B penetrates the lock hole 35 and enters the insertion introduction portion 38.

図11に示すように、ロック片20の回動が更に進むと、差込片20Bの先端部は差込導入部38にガイドされ、外蓋壁30と内蓋壁33との隙間を押し広げながら外蓋壁30と内蓋壁33との間に差し込まれる。 As shown in FIG. 11, when the rotation of the lock piece 20 further progresses, the tip end portion of the insertion piece 20B is guided by the insertion introduction portion 38, and the gap between the outer lid wall 30 and the inner lid wall 33 is widened. However, it is inserted between the outer lid wall 30 and the inner lid wall 33.

ロック穴35に対するロック片20の差し込みが完了すると、支持片20Aは外前壁12Aと略同一平面を成し、差込片20Bの一対の凹部22はロック穴35の左右両縁に係合する(図1参照)。また、差込片20Bの先端側は外蓋壁30と内蓋壁33とに挟持されているため(図11参照)、蓋体3が箱体2の開口部2Aを閉塞した状態でロックされる。つまり、包装箱1が封緘された状態になる(図1参照)。なお、ロック片20をロック穴35から引き抜く場合、作業者は、切目23で刳り貫かれた支持片20Aの上端部に指を掛けて差込片20Bを引き出せばよい。 When the insertion of the lock piece 20 into the lock hole 35 is completed, the support piece 20A forms substantially the same plane as the outer front wall 12A, and the pair of recesses 22 of the insertion piece 20B engage with the left and right edges of the lock hole 35. (See FIG. 1). Further, since the tip end side of the insertion piece 20B is sandwiched between the outer lid wall 30 and the inner lid wall 33 (see FIG. 11), the lid 3 is locked in a state where the opening 2A of the box 2 is closed. To. That is, the packaging box 1 is in a sealed state (see FIG. 1). When the lock piece 20 is pulled out from the lock hole 35, the operator may pull out the insertion piece 20B by hooking a finger on the upper end portion of the support piece 20A hollowed out by the cut 23.

以上説明した本実施形態に係る包装箱1では、内折曲線L24が差込範囲37において内差込片32の側にオフセットしていた(図5参照)。内差込片32が内折曲線L24で屈曲した状態において、差込範囲37には、ロック穴35を貫通したロック片20を外蓋壁30と内蓋壁33との間に導くための隙間である差込導入部38が形成されていた(図10参照)。仮に、差込導入部38が無い場合、ロック片20の先端部は内差込片32に衝突し、ロック片20を外蓋壁30と内蓋壁33との間に差し込むことができないことがある。これに対し、本実施形態に係る包装箱1によれば、ロック穴35を貫通したロック片20の先端部を差込導入部38にガイドさせながら外蓋壁30と内蓋壁33との間に差し込むことができる。つまり、差込導入部38によって外蓋壁30と内蓋壁33との間にロック片20を誘い込むことができる。これにより、適切にロック片20を外蓋壁30と内蓋壁33との間に差し込むことができるため、蓋体3を閉じた状態に保持することができる。 In the packaging box 1 according to the present embodiment described above, the inward folding curve L24 is offset toward the inward insertion piece 32 in the insertion range 37 (see FIG. 5). In the state where the inner insertion piece 32 is bent at the inner folding curve L24, the insertion range 37 has a gap for guiding the lock piece 20 penetrating the lock hole 35 between the outer lid wall 30 and the inner lid wall 33. The insertion introduction portion 38 was formed (see FIG. 10). If there is no insertion introduction portion 38, the tip portion of the lock piece 20 collides with the inner insertion piece 32, and the lock piece 20 cannot be inserted between the outer lid wall 30 and the inner lid wall 33. is there. On the other hand, according to the packaging box 1 according to the present embodiment, between the outer lid wall 30 and the inner lid wall 33 while guiding the tip portion of the lock piece 20 penetrating the lock hole 35 to the insertion introduction portion 38. Can be plugged into. That is, the insertion introduction portion 38 can lure the lock piece 20 between the outer lid wall 30 and the inner lid wall 33. As a result, the lock piece 20 can be appropriately inserted between the outer lid wall 30 and the inner lid wall 33, so that the lid body 3 can be held in a closed state.

また、本実施形態に係る包装箱1では、外蓋壁30と内蓋壁33とは互いに裏面同士を対向させ、外差込片31と内差込片32とは互いに裏面同士を対向させていた。この構成によれば、蓋体3の表裏両面を段ボールシートの表ライナ9B(厚紙の表面)で構成することができる。これにより、例えば、段ボールシートの表ライナ9Bのみに印刷する場合でも、蓋体3の表裏両面を印刷範囲とすることができる。また、ロック穴35は外差込片31に開口しているため、蓋体3の裏側(内蓋壁33や内差込片32)にはロック穴35は露出しない。これにより、蓋体3の意匠性を良好に保つことができる。また、蓋体3の裏面(内蓋壁33や内差込片32の表面)に印刷された文字や画像等がロック穴35で途切れることが無く、蓋体3の裏面に良好な印刷を行うことができる。 Further, in the packaging box 1 according to the present embodiment, the outer lid wall 30 and the inner lid wall 33 face each other on the back surfaces, and the outer plug 31 and the inner plug 32 face each other on the back surfaces. It was. According to this configuration, both the front and back surfaces of the lid 3 can be composed of the front liner 9B (the surface of the thick paper) of the corrugated cardboard sheet. Thereby, for example, even when printing is performed only on the front liner 9B of the corrugated cardboard sheet, both the front and back surfaces of the lid 3 can be set as the printing range. Further, since the lock hole 35 is open to the outer insertion piece 31, the lock hole 35 is not exposed on the back side of the lid 3 (the inner lid wall 33 and the inner insertion piece 32). As a result, the design of the lid 3 can be kept good. Further, the characters and images printed on the back surface of the lid 3 (the front surface of the inner lid wall 33 and the inner insertion piece 32) are not interrupted by the lock hole 35, and good printing is performed on the back surface of the lid 3. be able to.

また、本実施形態に係る包装箱1によれば、内差込片32が折返線L23を介して外差込片31に連設されているため、蓋体3(ブランク5)を1枚の段ボールシート(厚紙)で形成することができる。また、内差込片32を折返線L23で折り返すことで二重壁構造の蓋体3を形成することができる。これにより、内差込片32と外差込片31とが分離している場合に比べて、包装箱1(ブランク5)の製造コストを低減することができ、二重壁構造の蓋体3を容易に形成することができる。 Further, according to the packaging box 1 according to the present embodiment, since the inner insertion piece 32 is connected to the outer insertion piece 31 via the folding line L23, one lid 3 (blank 5) is provided. It can be formed of a corrugated cardboard sheet (thick paper). Further, the lid 3 having a double wall structure can be formed by folding the inner insertion piece 32 along the folding line L23. As a result, the manufacturing cost of the packaging box 1 (blank 5) can be reduced as compared with the case where the inner insertion piece 32 and the outer insertion piece 31 are separated, and the lid 3 having a double wall structure can be reduced. Can be easily formed.

また、本実施形態に係る包装箱1では、基端支持片34の左右方向の両端部が一対の後方係合穴40Bに係合されることで、基端支持片34が基端壁11に重ねられた状態に保持されていた。この構成によれば、基端支持片34によって内蓋壁33を外蓋壁30に対向させた姿勢に支持することができる。 Further, in the packaging box 1 according to the present embodiment, both ends of the base end support piece 34 in the left-right direction are engaged with the pair of rear engaging holes 40B, so that the base end support piece 34 is attached to the base end wall 11. It was held in a stacked state. According to this configuration, the inner lid wall 33 can be supported in a posture facing the outer lid wall 30 by the proximal end support piece 34.

また、本実施形態に係る包装箱1によれば、外差込片31と内差込片32とを互いに接着して一体にすることで、差込片20Bを箱体2の内部に差し込み易くすることができる。また、外蓋壁30と内蓋壁33とを互いに接着しないことで、差込範囲37において差込導入部38を形成することが可能になる。 Further, according to the packaging box 1 according to the present embodiment, by adhering the outer insertion piece 31 and the inner insertion piece 32 to each other and integrating them, the insertion piece 20B can be easily inserted into the box body 2. can do. Further, by not adhering the outer lid wall 30 and the inner lid wall 33 to each other, it is possible to form the insertion introduction portion 38 in the insertion range 37.

なお、本実施形態に係る包装箱1では、内折曲線L24の導入折線部L24Bの流れ方向の寸法が、差込範囲37(ロック穴35)の流れ方向の寸法よりも長く設定されていたが、本発明はこれに限定されない。導入折線部L24Bの流れ方向の寸法は、差込範囲37の流れ方向の寸法と同等であってもよい(図示せず)。また、一対の連結折線部L24Cは、傾斜していたが、導入折線部L24Bに直交する方向(段方向)に延設されてもよい。さらに、導入折線部L24Bの流れ方向の両端部は、一対の側方折線部L24Aとオーバーラップしていてもよい(図示せず)。この場合、一対の連結折線部L24Cは、側方折線部L24Aから導入折線部L24Bに向かって互いに離間するように傾斜してもよい。 In the packaging box 1 according to the present embodiment, the dimension of the introduction folding line portion L24B of the inward folding curve L24 in the flow direction is set longer than the dimension of the insertion range 37 (lock hole 35) in the flow direction. , The present invention is not limited to this. The flow direction dimension of the introduction folding line portion L24B may be the same as the flow direction dimension of the insertion range 37 (not shown). Further, although the pair of connecting fold line portions L24C are inclined, they may be extended in a direction (step direction) orthogonal to the introduction fold line portion L24B. Further, both ends of the introduction fold line portion L24B in the flow direction may overlap with the pair of side fold line portions L24A (not shown). In this case, the pair of connecting fold lines L24C may be inclined so as to be separated from each other from the side fold line portion L24A toward the introduction fold line portion L24B.

また、本実施形態に係る包装箱1では、内折曲線L24において、一対の側方折線部L24Aと導入折線部L24Bとが一対の連結折線部L24Cを介して連設されていたが、これに限らず、一対の連結折線部L24Cは省略(削除)されてもよい(図示せず)。 Further, in the packaging box 1 according to the present embodiment, in the inner folding curve L24, a pair of side folding line portions L24A and an introduction folding line portion L24B are continuously provided via a pair of connecting folding line portions L24C. Not limited to this, the pair of connecting polygonal line portions L24C may be omitted (deleted) (not shown).

[変形例]
上記した本実施形態に係る包装箱1では、内折曲線L24が、流れ方向(左右方向)の中央部において略台形状に屈曲していたが、本発明はこれに限定されない。例えば、図12に示すように、変形例に係る内折曲線L26は、流れ方向(左右方向)の両端から中央に向かって内差込片32の側に傾斜する一対の直線部で構成されてもよい。つまり、内折曲線L26は、左右方向の中央部で内差込片32に向けて突き出した略V字状に形成されてもよい。また、内折曲線L26は、略V字状に限らず、略U字状に湾曲していてもよい(図示せず)。内折曲線L26は、流れ方向(左右方向)の両端を除く略全域に亘って内差込片32の側にずれて形成されることになる。なお、内折曲線L24,L26の形状は上記に限定されるものではなく、少なくともロック穴35に対応した差込範囲37において内折曲線L24,L26は、その両端よりも内差込片32の側にずれた位置に形成されていればよい。
[Modification example]
In the packaging box 1 according to the present embodiment described above, the inward folding curve L24 is bent in a substantially trapezoidal shape at the central portion in the flow direction (left-right direction), but the present invention is not limited to this. For example, as shown in FIG. 12, the inward folding curve L26 according to the modified example is composed of a pair of straight portions inclined from both ends in the flow direction (left-right direction) toward the center toward the inward insertion piece 32. May be good. That is, the inward folding curve L26 may be formed in a substantially V shape protruding toward the inward insertion piece 32 at the central portion in the left-right direction. Further, the inward folding curve L26 is not limited to a substantially V shape, and may be curved in a substantially U shape (not shown). The inward folding curve L26 is formed so as to be displaced toward the inward insertion piece 32 over substantially the entire area excluding both ends in the flow direction (left-right direction). The shapes of the inward folding curves L24 and L26 are not limited to the above, and the inward folding curves L24 and L26 are more inwardly inserted than both ends in the insertion range 37 corresponding to the lock hole 35. It suffices if it is formed at a position shifted to the side.

なお、本実施形態(変形例を含む。以下同じ。)に係る包装箱1では、内差込片32が外差込片31に連設されていたが、本発明はこれに限定されない。例えば、内差込片32と外蓋壁30とが分離していてもよい(図示せず)。この場合、箱体2、外蓋壁30および外差込片31は1枚の段ボールシート(厚紙)で形成し、内差込片32、内蓋壁33および基端支持片34は別の1枚の段ボールシート(厚紙)で形成し、外差込片31と内差込片32とを接着することが好ましい。 In the packaging box 1 according to the present embodiment (including a modified example, the same applies hereinafter), the inner insertion piece 32 is connected to the outer insertion piece 31, but the present invention is not limited to this. For example, the inner insertion piece 32 and the outer lid wall 30 may be separated (not shown). In this case, the box body 2, the outer lid wall 30, and the outer insertion piece 31 are formed of one corrugated cardboard sheet (thick paper), and the inner insertion piece 32, the inner lid wall 33, and the base end support piece 34 are different ones. It is preferable that the corrugated cardboard sheet (thick paper) is formed and the outer insertion piece 31 and the inner insertion piece 32 are adhered to each other.

また、本実施形態に係る包装箱1では、外蓋壁30と内蓋壁33とが互いに接着されていなかったが、本発明はこれに限定されない。外蓋壁30と内蓋壁33とは、互いに差込範囲37を避けた位置で接着されてもよい(図示せず)。この場合、内差込片32と外差込片31とは非接着としてもよい。 Further, in the packaging box 1 according to the present embodiment, the outer lid wall 30 and the inner lid wall 33 are not adhered to each other, but the present invention is not limited to this. The outer lid wall 30 and the inner lid wall 33 may be adhered to each other at positions avoiding the insertion range 37 (not shown). In this case, the inner insertion piece 32 and the outer insertion piece 31 may be non-adhesive.

また、本実施形態に係る包装箱1では、基端壁11、前壁体12および一対の側壁体13が底壁10の周縁に立設して箱体2を構成していたが、本発明はこれに限定されない。例えば、箱体は、角筒状の周壁と、周壁の下面を閉じる複数のフラップと、を含んでいてもよい(図示せず)。 Further, in the packaging box 1 according to the present embodiment, the base end wall 11, the front wall body 12, and the pair of side wall bodies 13 are erected on the peripheral edge of the bottom wall 10 to form the box body 2. Is not limited to this. For example, the box body may include a square tubular peripheral wall and a plurality of flaps that close the lower surface of the peripheral wall (not shown).

また、本実施形態に係る包装箱1は、段ボールシートで形成されていたが、これに限らず、例えば、多層抄きの板紙や樹脂製の板材(樹脂製シート)等で形成されていてもよい。 Further, the packaging box 1 according to the present embodiment is formed of a corrugated cardboard sheet, but is not limited to this, and may be formed of, for example, a multi-layer paperboard or a resin plate material (resin sheet). Good.

なお、上記実施形態の説明は、本発明に係る包装箱における一態様を示すものであって、本発明の技術範囲は、上記実施形態に限定されるものではない。 The description of the embodiment shows one aspect of the packaging box according to the present invention, and the technical scope of the present invention is not limited to the above embodiment.

1 包装箱
2 箱体
2A 開口部
3 蓋体
11 基端壁
12 前壁体(先端壁)
13 側壁体(側壁)
20 ロック片
30 外蓋壁
31 外差込片
32 内差込片
33 内蓋壁
34 基端支持片
35 ロック穴
37 差込範囲
38 差込導入部
40B 後方係合穴(係合穴)
L22 外折曲線
L23 折返線
L24,L26 内折曲線
1 Packaging box 2 Box body 2A Opening 3 Lid body 11 Base end wall 12 Front wall body (tip wall)
13 Side wall body (side wall)
20 Lock piece 30 Outer lid wall 31 Outer plug piece 32 Inner plug piece 33 Inner lid wall 34 Base end support piece 35 Lock hole 37 Insertion range 38 Insertion introduction part 40B Rear engagement hole (engagement hole)
L22 outer fold curve L23 fold line L24, L26 inner fold curve

Claims (5)

一面に開口部(2A)を有する箱体(2)と、
前記箱体に連設され、前記開口部を開閉する蓋体(3)と、を備え、
前記蓋体は、
前記開口部の縁部である前記箱体の基端壁(11)の先端部に連設され、前記開口部を閉塞可能に形成された外蓋壁(30)と、
前記外蓋壁の先端部に外折曲線(L22)を介して連設され、前記外折曲線で屈曲して前記箱体の内部に差し込まれた状態で前記基端壁に対向する前記箱体の先端壁(12)に重ねられる外差込片(31)と、
前記外蓋壁の裏面に重ねられて二重壁構造を構成する内蓋壁(33)と、
前記内蓋壁の先端部に内折曲線(L24,L26)を介して連設され、前記内折曲線で屈曲して前記外差込片の裏面に重ねられて二重壁構造を構成する内差込片(32)と、を含み、
前記先端壁には、ロック片(20)が設けられ、
前記外差込片には、前記ロック片が差し込まれるロック穴(35)が前記外折曲線に沿って形成され、
少なくとも前記ロック穴に対応した差込範囲(37)において前記内折曲線は、その両端よりも前記内差込片の側にずれた位置に形成されており、
前記内差込片が前記内折曲線で屈曲した状態において、前記差込範囲には、前記ロック穴を貫通した前記ロック片を前記外蓋壁と前記内蓋壁との間に導くための隙間である差込導入部(38)が形成されることを特徴とする包装箱。
A box body (2) having an opening (2A) on one side,
A lid (3), which is connected to the box and opens and closes the opening, is provided.
The lid is
An outer lid wall (30) that is connected to the tip of the base end wall (11) of the box body, which is the edge of the opening, and is formed so as to be able to close the opening.
The box body is connected to the tip end portion of the outer lid wall via an outer folding curve (L22), bent by the outer folding curve and inserted into the inside of the box body, and faces the base end wall. External insertion piece (31) stacked on the tip wall (12) of the
The inner lid wall (33), which is overlapped on the back surface of the outer lid wall to form a double wall structure,
The inner lid wall is connected to the tip of the inner lid wall via an inner folding curve (L24, L26), bent at the inner folding curve, and overlapped with the back surface of the outer insertion piece to form a double wall structure. Including the plug (32) and
A lock piece (20) is provided on the tip wall, and a lock piece (20) is provided.
A lock hole (35) into which the lock piece is inserted is formed in the outer insertion piece along the outer folding curve.
At least in the insertion range (37) corresponding to the lock hole, the inward folding curve is formed at a position shifted to the side of the inward insertion piece from both ends thereof.
In a state where the inner insertion piece is bent along the inner folding curve, a gap for guiding the lock piece penetrating the lock hole between the outer lid wall and the inner lid wall is provided in the insertion range. A packaging box characterized in that a plug-in introduction portion (38) is formed.
前記箱体と前記蓋体とは、表面と裏面とを有する厚紙で構成され、
前記外蓋壁と前記内蓋壁とは互いに裏面同士を対向させ、前記外差込片と前記内差込片とは互いに裏面同士を対向させたことを特徴とする請求項1に記載の包装箱。
The box body and the lid body are made of thick paper having a front surface and a back surface.
The packaging according to claim 1, wherein the outer lid wall and the inner lid wall face each other on the back surfaces, and the outer plug piece and the inner plug piece face each other on the back surfaces. box.
前記内差込片は、前記外差込片の先端部に折返線(L23)を介して連設され、前記折返線で折り返されることで前記外差込片の裏面に重ねられたことを特徴とする請求項1または2に記載の包装箱。 The inner insertion piece is continuously provided at the tip of the outer insertion piece via a folding line (L23), and is folded back at the folding line so as to be overlapped on the back surface of the outer insertion piece. The packaging box according to claim 1 or 2. 前記内蓋壁の先端部に連設され、前記基端壁に重ねられた基端支持片(34)を更に備え、
前記箱体は、前記基端壁と前記先端壁との対向方向に直交する幅方向に対向する一対の側壁(13)を有し、
前記基端支持片は、その幅方向の両端部を一対の前記側壁に形成された一対の係合穴(40B)に係合させることで前記基端壁に重ねられた状態に保持されることを特徴とする請求項1ないし3のいずれかに記載の包装箱。
A base end support piece (34) connected to the tip end portion of the inner lid wall and superposed on the base end wall is further provided.
The box body has a pair of side walls (13) facing in the width direction orthogonal to the direction in which the base end wall and the tip wall face each other.
The base end support piece is held in a state of being overlapped with the base end wall by engaging both ends in the width direction with a pair of engaging holes (40B) formed in the pair of side walls. The packaging box according to any one of claims 1 to 3.
前記内差込片は前記外差込片に接着され、前記内蓋壁は前記外蓋壁に接着されないことを特徴とする請求項1ないし4のいずれかに記載の包装箱。 The packaging box according to any one of claims 1 to 4, wherein the inner insertion piece is adhered to the outer insertion piece, and the inner lid wall is not adhered to the outer lid wall.
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