JP3224241U - Packaging box - Google Patents

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JP3224241U
JP3224241U JP2019003601U JP2019003601U JP3224241U JP 3224241 U JP3224241 U JP 3224241U JP 2019003601 U JP2019003601 U JP 2019003601U JP 2019003601 U JP2019003601 U JP 2019003601U JP 3224241 U JP3224241 U JP 3224241U
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piece
upper lid
upper flap
fold line
insertion piece
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智昭 赤井
智昭 赤井
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富山スガキ株式会社
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Abstract

【課題】簡単な構造で組立が容易であり、上蓋片と側面が隙間なく組み立てられ、確実に収容物を包装する包装箱を提供する。【解決手段】互いに平行に連接され組立状態で筒体を形成する複数の側面14,16,18,20と、側面14に折罫線34を介して連接された上蓋片32と、一対の側面16,20にそれぞれ連接して上フラップ50,72を有する。上フラップ50,72は、上フラップ50,72側に湾曲した上フラップ湾曲折線52,74を介して側面16,20に連接している。上フラップ50,72の、上フラップ湾曲折線52,74とは反対側の端部50a,72aは、中心部分が外側に凸となる円弧状である。上蓋片32の折罫線34とは反対側の端部に、差込片36を有し、差込片湾曲折線38は、差込片36側に膨らむように湾曲している。【選択図】図1Provided is a packaging box that is easy to assemble with a simple structure, has an upper lid piece and a side surface that are assembled without gaps, and that reliably packs the contents. SOLUTION: A plurality of side surfaces 14, 16, 18, and 20 connected in parallel to each other to form a cylindrical body, an upper lid piece 32 connected to the side surface 14 via a crease line 34, and a pair of side surfaces 16 are provided. , 20 have upper flaps 50, 72 connected to each other. The upper flaps 50 and 72 are connected to the side surfaces 16 and 20 via upper flap bending lines 52 and 74 that are curved toward the upper flaps 50 and 72. End portions 50a and 72a of the upper flaps 50 and 72 opposite to the upper flap bending lines 52 and 74 have an arc shape whose central portions are convex outward. The upper lid piece 32 has an insertion piece 36 at the end opposite to the crease line 34, and the insertion piece curved folding line 38 is curved so as to swell toward the insertion piece 36. [Selection] Figure 1

Description

本考案は、上蓋片と差込片を閉じて開口部を閉鎖する包装箱に関する。   The present invention relates to a packaging box that closes an opening by closing an upper lid piece and an insertion piece.

従来、1枚のブランクシートから一体的に打ち抜かれた箱体形成片から成る包装箱には、互いに平行に連接された側面と、前記側面から連なって箱体上面の開口部を閉鎖する上蓋片と、上蓋片に連接し対向する前記側面の内側に差し込んで閉鎖する差込片が設けられたものがある。   2. Description of the Related Art Conventionally, a packaging box made of a box-shaped piece integrally punched from one blank sheet has a side surface connected in parallel to each other and an upper lid piece that is continuous from the side surface and closes the opening on the top surface of the box. And an insertion piece that is inserted and closed inside the side surface that is connected to and is opposed to the upper lid piece.

例えば、特許文献1に開示されている包装箱は、4つの側面が筒状に組み立てられ、一方の端部の開口部は底部で閉鎖され、他方の開口部は一枚の上蓋片で閉鎖される。上蓋片の先端には、差し込み片が設けられている。上蓋片が設けられた側面に隣接する一対の側面には、それぞれ湾曲折線を介して連接した上フラップが設けられている。湾曲折線は、側面側に突出して湾曲した側面湾曲折線と、上フラップ側に位置して突出するように湾曲した上フラップ湾曲曲線を備えている。箱体形成片の組立状態で、上フラップは上フラップ湾曲折線の形状に沿って湾曲して曲げられて、中央部分が緩やかに上方に凸となるように膨らむ。上蓋片は上フラップの表面に重ねられ、隙間なく閉じられる。   For example, in the packaging box disclosed in Patent Document 1, four side surfaces are assembled into a cylindrical shape, the opening at one end is closed at the bottom, and the other opening is closed at one upper cover piece. The An insertion piece is provided at the tip of the upper lid piece. A pair of side surfaces adjacent to the side surface on which the upper lid piece is provided is provided with an upper flap connected to each other via a curved folding line. The curved fold line includes a side curved fold line that protrudes toward the side surface and is curved, and an upper flap curved curve that is curved so as to protrude from the upper flap side. In the assembled state of the box-forming piece, the upper flap is bent and bent along the shape of the upper flap bending line, and the central portion is gently swollen so as to protrude upward. The upper lid piece is overlaid on the surface of the upper flap and is closed without a gap.

実用新案登録第3177114号公報Utility Model Registration No. 3177114

上記背景技術の場合、上フラップと側面の間に、側面湾曲折線と上フラップ湾曲曲線の、2本が設けられているため、均等に折り曲げるために注意が必要であり、また折り曲げにくく、組み立て作業の工数も多いものである。   In the case of the above-mentioned background art, since there are two sides, a side curve fold line and an upper flap curve, between the upper flap and the side surface, care must be taken to fold evenly, and it is difficult to bend and assemble There are many man-hours for the work.

この考案は、上記背景技術の問題点に鑑みてなされたものであり、簡単な構造で組立が容易であり、上蓋片と側面が隙間なく組み立てられ、確実に収容物を包装する包装箱を提供することを目的とする。   The present invention has been made in view of the above-described problems of the background art, and provides a packaging box that can be easily assembled with a simple structure, the upper lid piece and the side surface are assembled without any gaps, and the contents are securely packaged. The purpose is to do.

本考案は、一枚の箱体形成片から成り、前記箱体形成片には、互いに平行に連接され組立状態で筒体を形成する複数の側面と、前記側面の1つに折罫線を介して連接され前記筒体の開口部を閉鎖する上蓋片と、前記上蓋片が設けられた側面に隣接する一対の側面にそれぞれ連接して上フラップが設けられた包装箱である。前記上フラップは、前記上フラップ側に膨らむように湾曲した上フラップ湾曲折線を介して前記側面に連接し、前記上フラップ湾曲折線の両端部は、前記側面の開口縁部の角部に位置し、前記上フラップが前記側面に対して約直角に折り曲げ可能な円弧で形成されている。前記箱体形成片の組立状態では、前記上フラップは前記上フラップ湾曲折線の形状に沿って曲げられて中央部分が緩やかに上方に凸となるように膨らみ、前記上蓋片は前記箱体形成片のシートの弾性により中央部分が僅かに上方に凸となるように膨らみ、前記上フラップの表面に重ねられ、上方に膨らむ前記上フラップに当接し上蓋片の裏面に隙間なく閉じられる。   The present invention consists of a single box-forming piece. The box-forming piece is connected in parallel to each other to form a cylindrical body in an assembled state, and one of the side faces via a crease line. An upper lid piece that is connected to each other and closes the opening of the cylindrical body, and a packaging box that is connected to a pair of side surfaces adjacent to the side surface provided with the upper lid piece and is provided with an upper flap. The upper flap is connected to the side surface via an upper flap curved fold line that is curved so as to swell toward the upper flap, and both end portions of the upper flap curved fold line are formed at corners of the opening edge portion of the side surface. And the upper flap is formed by an arc that can be bent at a right angle to the side surface. In the assembled state of the box-forming piece, the upper flap is bent along the shape of the upper flap bending line and bulges so that the central portion gently protrudes upward, and the upper lid piece forms the box Due to the elasticity of the sheet of the piece, the central portion bulges so as to protrude slightly upward, overlaps the surface of the upper flap, contacts the upper flap that bulges upward, and closes to the back surface of the upper lid piece without any gap.

前記上フラップの、前記上フラップ湾曲折線とは反対側の端部は、中心部分が外側に凸となる円弧で形成され、前記上フラップは略半円形状である。前記箱体形成片の組立状態では、前記上蓋片の裏面に前記端部が重ねられ、隙間なく閉じられる。   An end of the upper flap opposite to the upper flap bending line is formed by an arc whose central portion is convex outward, and the upper flap is substantially semicircular. In the assembled state of the box-forming piece, the end portion is overlapped on the back surface of the upper lid piece and is closed without a gap.

前記上蓋片の前記折罫線とは反対側の端部に、差込片が差込片湾曲折線を介して設けられ、前記差込片湾曲折線は、前記差込片側に膨らむように湾曲し、前記差込片湾曲折線の両端部は、前記上蓋片の角部に位置し、前記差込片が前記上蓋片に対して約直角に折り曲げ可能な円弧で形成されている。前記包装箱を組み立てて前記上蓋片で閉鎖する時に、前記差込片は、前記差込片湾曲折線で折り曲げられ、前記上蓋片が設けられた側面に対向する側面の裏面に差し込まれて前記上蓋片を閉鎖し、前記上蓋片は、前記差込片湾曲折線の中心付近が緩やかに凸となり、前記差込片が差し込まれる前記側面との隙間が小さくなる。   An insertion piece is provided at an end of the upper lid piece opposite to the crease line through an insertion piece bending fold line, and the insertion piece bending fold line is curved so as to swell toward the insertion piece side. Both ends of the insertion piece bending fold line are located at corners of the upper lid piece, and the insertion piece is formed by an arc that can be bent at a right angle to the upper lid piece. When the packaging box is assembled and closed with the upper lid piece, the insertion piece is bent at the insertion piece bending fold line and inserted into the back surface of the side surface facing the side surface provided with the upper lid piece. The upper lid piece is closed, and the upper lid piece gently protrudes in the vicinity of the center of the insertion piece bending fold line, and the gap with the side surface into which the insertion piece is inserted becomes small.

本考案の包装箱は、簡単な構造で組立が容易であり、上蓋片と側面が隙間なく組み立てられ、確実に収容物を包装することができる。   The packaging box of the present invention has a simple structure and is easy to assemble, and the upper lid piece and the side surface are assembled without a gap, so that the contents can be packaged reliably.

この考案の一実施形態の包装箱の上蓋片を開いた状態を示す斜視図(a)と、上蓋片を閉じた状態を示す斜視図(b)である。It is the perspective view (a) which shows the state which opened the upper cover piece of the packaging box of one Embodiment of this invention, and the perspective view (b) which shows the state which closed the upper cover piece. この実施形態の包装箱の展開図である。It is an expanded view of the packaging box of this embodiment. この実施形態の包装箱の上蓋片を閉じる工程を示す正面図である。It is a front view which shows the process of closing the upper cover piece of the packaging box of this embodiment.

以下、この考案の実施形態について図面に基づいて説明する。図1〜図3はこの考案の一実施形態を示すもので、この実施形態の包装箱10は、紙製等の一枚のシートを打ち抜いて形成された箱体形成片12を組み立てて設けられている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of the present invention, and a packaging box 10 of this embodiment is provided by assembling a box-forming piece 12 formed by punching a sheet of paper or the like. ing.

図2は、箱体形成片12を表面から見た展開図であり、箱体形成片12は、側面14,16,18,20が、互いに平行に連接して形成されている。側面14,16,18,20は、連接方向と直交する幅方向の長さが互いに同じであり、連接方向の長さは、側面14,18が長くて互いにほぼ等しく、側面16,20が短くて互いにほぼ等しい。さらに、側面14の側縁部には、包装箱10の組立状態で側面20の裏面に糊付けされる糊付片22が設けられている。そして、糊付片22、側面14,16,18,20は、各々折罫線24,26,28,30で区切られている。   FIG. 2 is a developed view of the box-forming piece 12 as viewed from the surface. The box-forming piece 12 is formed by connecting side surfaces 14, 16, 18, and 20 in parallel with each other. The side surfaces 14, 16, 18, and 20 have the same length in the width direction orthogonal to the connecting direction, and the length in the connecting direction is substantially equal to each other when the side surfaces 14 and 18 are long, and the side surfaces 16 and 20 are short. Are almost equal to each other. Further, a glued piece 22 that is glued to the back surface of the side surface 20 in the assembled state of the packaging box 10 is provided on the side edge portion of the side surface 14. The glued piece 22 and the side surfaces 14, 16, 18, and 20 are divided by crease lines 24, 26, 28, and 30, respectively.

側面14において、側面どうしの連接方向に対して直角な方向の一方の端部には、矩形の上蓋片32が直線の折罫線34で区切られて設けられている。上蓋片32の、折罫線34とは反対側の端部には、さらに差込片36が差込片湾曲折線38で区切られて設けられている。差込片湾曲折線38は、両端部が上蓋片32の角部に位置し、差込片36が上蓋片32に対して約直角に折り曲げ可能な僅かな円弧であって、折罫線34とは反対側の差込片36の先端側に膨らんで形成されている。   In the side surface 14, a rectangular upper lid piece 32 is provided at one end in a direction perpendicular to the connecting direction of the side surfaces, separated by a straight crease line 34. An insertion piece 36 is further provided on the end of the upper lid piece 32 opposite to the crease line 34 by being separated by an insertion piece curved folding line 38. The insertion piece curved folding line 38 is a slight arc whose both ends are positioned at the corners of the upper lid piece 32 and the insertion piece 36 can be bent at a right angle with respect to the upper lid piece 32. Is formed to bulge to the tip side of the insertion piece 36 on the opposite side.

側面14の、折罫線34とは反対側の端部には、底部を形成する第一底蓋片40が折罫線42で区切られて設けられている。第一底蓋片40は、折罫線42を下底とする台形状に形成され、折罫線42に対して平行な上底である端部40aは、折罫線26よりも折罫線24の近くに位置し、変形した台形となる。折罫線42から端部40aまでの長さは、包装箱10の組立状態で底部の中心線を超えて対向する側面18に近い位置に達する長さである。折罫線42の端部から端部40aの端部を連結する一対の斜辺の、折罫線26側に位置する斜辺には、折罫線42に近い位置に、略三角形状の底部糊付片44が折罫線46で区切られて設けられている。底部糊付片44の折罫線42とは反対側の側縁部と第一底蓋片40の斜辺が交差する位置は、包装用箱10の組立状態で底部の中心に位置する。底部糊付片44が設けられている斜辺と、端部40aが、交差する角部には、底部糊付片44に向かって半円形状に膨出する突部40bが形成され、突部40bは斜辺に近い角度の折罫線48で第一底蓋片40と区切られている。   A first bottom cover piece 40 that forms a bottom portion is provided on an end of the side surface 14 opposite to the crease line 34, and is divided by a crease line 42. The first bottom cover piece 40 is formed in a trapezoidal shape with the crease line 42 as a lower base, and an end 40 a that is an upper base parallel to the crease line 42 is closer to the crease line 24 than the crease line 26. Positioned and deformed trapezoid. The length from the crease line 42 to the end portion 40a is a length that reaches the position close to the side surface 18 that faces the center line of the bottom portion in the assembled state of the packaging box 10. On the hypotenuse located on the crease line 26 side of the pair of hypotenuses connecting the end of the crease line 42 to the end of the end portion 40a, a substantially triangular bottom glued piece 44 is located near the crease line 42. The lines are separated by a crease line 46. The position where the side edge of the bottom glued piece 44 opposite to the crease line 42 and the oblique side of the first bottom cover piece 40 intersect is located in the center of the bottom in the assembled state of the packaging box 10. At the corner where the hypotenuse where the bottom glued piece 44 is provided and the end 40a intersect, a protrusion 40b bulging in a semicircular shape toward the bottom glued piece 44 is formed. Is separated from the first bottom cover piece 40 by a crease line 48 having an angle close to the hypotenuse.

側面16の、側面14の折罫線34に隣接する端部には、略半円形の上フラップ50が上フラップ湾曲折線52で区切られて設けられている。上フラップ湾曲折線52は、上フラップ50側に膨らむように湾曲して形成され、上フラップ湾曲折線52の両端部は、側面16の開口縁部の角部に位置し、上フラップ50が側面16に対して約直角に折り曲げ可能な円弧で形成されている。上フラップ50の、上フラップ湾曲折線52とは反対側の端部50aは、中心部分が外側に凸となる円弧で形成されている。端部50aは、両端部が側面16の開口縁部の角部に位置し、角部と連続する部分は、折罫線26又は折罫線28の延長線に位置する短い直線となっている。折罫線28の延長線に位置する端部には、上蓋片32の差込片36が係止される段部54が形成されている。側面16の、上フラップ湾曲折線52とは反対側の端部には、底部を形成する台形状の底フラップ56が折罫線58で区切られて設けられている。   A substantially semi-circular upper flap 50 is provided at the end of the side surface 16 adjacent to the crease line 34 of the side surface 14 and separated by an upper flap curved fold line 52. The upper flap curved fold line 52 is curved and formed so as to swell toward the upper flap 50, and both end portions of the upper flap curved fold line 52 are located at the corners of the opening edge of the side surface 16. It is formed of an arc that can be bent at a right angle to the side surface 16. An end 50a of the upper flap 50 opposite to the upper flap curved folding line 52 is formed by an arc whose central portion is convex outward. Both ends of the end portion 50 a are positioned at the corners of the opening edge of the side surface 16, and the portion continuous with the corner portion is a short straight line positioned at the crease line 26 or an extension of the crease line 28. A step portion 54 to which the insertion piece 36 of the upper lid piece 32 is locked is formed at an end portion located on the extension line of the crease line 28. A trapezoidal bottom flap 56 forming a bottom portion is provided on an end portion of the side surface 16 opposite to the upper flap curved fold line 52, separated by a crease line 58.

側面18の、側面16の上フラップ湾曲折線52に隣接する端部18aは、包装箱10の組立状態で上方に開口する開口縁部となり、何も設けられていない。端部18aには、開封する際に指で押圧する開封用押圧部60が設けられている。開封用押圧部60は、端部18aの中央部とU字状の破断線62に囲まれて周囲と区切られている。   An end portion 18 a of the side surface 18 adjacent to the upper flap bending line 52 of the side surface 16 is an opening edge portion that opens upward in the assembled state of the packaging box 10, and nothing is provided. The end 18a is provided with an opening pressing portion 60 that is pressed by a finger when opening. The opening pressing portion 60 is surrounded by a central portion of the end portion 18a and a U-shaped break line 62 and is separated from the periphery.

側面18の、端部18aとは反対側の端部には、第二底蓋片64が折罫線66で区切られて設けられている。第二底蓋片64は、第一底蓋片40と同じ形状であり、折罫線66を下底とする台形状に形成され、折罫線66に対して平行な上底である端部64aは、折罫線30よりも折罫線28の近くに位置し、変形した台形となる。折罫線30側に位置する斜辺には、折罫線66に近い位置に、略三角形状の底部糊付片68が折罫線70で区切られて設けられている。底部糊付片68が設けられている斜辺と、端部64aが、交差する角部には、底部糊付片68に向かって半円形状に膨出する突部64bが形成され、突部64bは斜辺に近い角度の折罫線48で第二底蓋片64と区切られている。   A second bottom cover piece 64 is provided on an end portion of the side surface 18 opposite to the end portion 18 a by being separated by a crease line 66. The second bottom cover piece 64 has the same shape as the first bottom cover piece 40, is formed in a trapezoidal shape with the crease line 66 as a lower base, and an end portion 64a that is an upper base parallel to the crease line 66 has It is located near the crease line 28 rather than the crease line 30 and becomes a deformed trapezoid. On the hypotenuse located on the crease line 30 side, a substantially triangular bottom glued piece 68 is provided at a position close to the crease line 66 and separated by a crease line 70. A projecting portion 64b bulging in a semicircular shape toward the bottom pasting piece 68 is formed at the corner where the hypotenuse where the bottom pasting piece 68 is provided and the end 64a intersect, and the projecting portion 64b. Is separated from the second bottom cover piece 64 by a crease line 48 having an angle close to the hypotenuse.

側面20の、側面18の端部18aに隣接する端部には、略半円形の上フラップ72が上フラップ湾曲折線74で区切られて設けられている。上フラップ72は、上フラップ50と同じ形状である。上フラップ湾曲折線74は、上フラップ72側に膨らむように湾曲して形成され、上フラップ湾曲折線74の両端部は、側面20の開口縁部の角部に位置し、上フラップ72が側面20に対して約直角に折り曲げ可能な円弧で形成されている。上フラップ72の、上フラップ湾曲折線74とは反対側の端部72aは、中心部分が外側に凸となる円弧で形成されている。端部72aは、両端部が側面20の開口縁部の角部に位置し、角部と連続する部分は、折罫線30又は折罫線30とは反対側に位置する側縁部の延長線に位置する短い直線となっている。折罫線30の延長線に位置する端部には、段部54が形成されている。側面20の、上フラップ湾曲折線74とは反対側の端部には、底フラップ56と同じ形状の台形状の底フラップ76が折罫線78で区切られて設けられている。   A substantially semi-circular upper flap 72 is provided at the end of the side surface 20 adjacent to the end 18 a of the side surface 18, separated by an upper flap bending line 74. The upper flap 72 has the same shape as the upper flap 50. The upper flap curved fold line 74 is formed so as to bulge toward the upper flap 72, and both end portions of the upper flap curved fold line 74 are located at the corners of the opening edge of the side surface 20, and the upper flap 72 is It is formed by an arc that can be bent at a right angle to the side surface 20. An end 72a of the upper flap 72 opposite to the upper flap curved folding line 74 is formed by an arc whose central portion is convex outward. The end portion 72a has both end portions positioned at the corners of the opening edge of the side surface 20, and a portion continuous with the corner portion is a crease line 30 or an extension line of a side edge portion located on the opposite side of the crease line 30. It is a short straight line. A step portion 54 is formed at the end located on the extension line of the crease line 30. A trapezoidal bottom flap 76 having the same shape as the bottom flap 56 is provided at the end of the side surface 20 opposite to the upper flap curved folding line 74 and separated by a crease line 78.

次に、この実施形態の包装箱10の組立方法の一例について説明する。なお、ここでは図2が包装箱10の箱体形成片12の表面を見たものであり、箱体形成片12の表面が凸になる折り方を正折り、そして裏面が凸になる折り方を逆折りと称する。   Next, an example of the assembly method of the packaging box 10 of this embodiment is demonstrated. Here, FIG. 2 shows the surface of the box-forming piece 12 of the packaging box 10, and the folding method in which the surface of the box-forming piece 12 is convex and the back surface is convex. Is called reverse folding.

まず、折罫線42,58,66,78で、第一底蓋片40、底フラップ56、第二底蓋片64、底フラップ76を正折りし、次に第一底蓋片40の折罫線46と、第二底蓋片64の折罫線70を逆折りし、底部糊付片44,68の裏面に、それぞれ糊80を塗布する。次に、糊付片22の表面に糊82を塗布し、折罫線26を正折りし、次に折罫線30を正折りする。これにより、側面20の裏面に糊付片22が糊82で糊付けされ、第一底蓋片40の底部糊付片44の裏面は、糊80により底フラップ56の表面に糊付けされ、第二底蓋片64の底部糊付片68の裏面は、糊80により底フラップ76の表面に糊付けされる。これにより、箱体形成片12は折り畳み状態となり、この状態で出荷される。   First, the first bottom lid piece 40, the bottom flap 56, the second bottom lid piece 64, and the bottom flap 76 are normally folded at the crease lines 42, 58, 66, and 78, and then the crease line of the first bottom lid piece 40 is obtained. 46 and the crease line 70 of the second bottom cover piece 64 are reversely folded, and glue 80 is applied to the back surfaces of the bottom glued pieces 44 and 68, respectively. Next, paste 82 is applied to the surface of the glued piece 22, the crease line 26 is forward-folded, and then the crease line 30 is forward-folded. As a result, the glued piece 22 is glued to the back surface of the side surface 20 with glue 82, and the back surface of the bottom glued piece 44 of the first bottom cover piece 40 is glued to the surface of the bottom flap 56 by glue 80. The back surface of the bottom glued piece 68 of the lid piece 64 is glued to the surface of the bottom flap 76 by glue 80. Thereby, the box forming piece 12 is in a folded state, and is shipped in this state.

次に、収容物を包装し包装する工場等において、折罫線24,26,28,30を各々90°に正折りして四角形の筒体にする。この時、第一底蓋片40の底部糊付片44は底フラップ56に、第二底蓋片64の底部糊付片68は底フラップ76に糊付けされているため、二つ折りされていた折罫線42,58,66,78は自動的に引き起こされてほぼ90°に開き、ワンタッチで底部が形成される。そして、第一底蓋片40の端部40aは底フラップ76の裏面に重なり、第二底蓋片64の端部64aは底フラップ56の裏面に重なり、互いに係止される。組立工程では、突部40bと突部64bは、折罫線48で折り曲げられながら、互いの表面同士が合わせられて摺動し、組立状態では基端部どうしが当接し、元に戻ることを防ぐ。これにより底部が確実に係止され箱体の底部の形状を保ち、折り畳み状態に戻ることを防ぎ、図1(a)に示す状態となる。   Next, in a factory for packaging and packaging the contents, the crease lines 24, 26, 28, and 30 are each normally folded at 90 ° to form a rectangular cylinder. At this time, the bottom glued piece 44 of the first bottom cover piece 40 is glued to the bottom flap 56, and the bottom glued piece 68 of the second bottom lid piece 64 is glued to the bottom flap 76. The ruled lines 42, 58, 66, and 78 are automatically caused to open at approximately 90 °, and the bottom is formed with one touch. The end portion 40a of the first bottom cover piece 40 overlaps the back surface of the bottom flap 76, and the end portion 64a of the second bottom cover piece 64 overlaps the back surface of the bottom flap 56 and is locked together. In the assembly process, the protrusions 40b and the protrusions 64b slide while the surfaces of the protrusions 40b and the protrusions 64b are aligned with each other while being folded along the crease line 48. . As a result, the bottom portion is securely locked, the shape of the bottom portion of the box body is maintained, the return to the folded state is prevented, and the state shown in FIG.

包装箱10の中に図示しない収容物を入れ、上フラップ湾曲折線52,74で上フラップ50,72を90°に正折りする。この時上フラップ50,72は上フラップ湾曲折線52,74の形状に沿って湾曲して曲げられて、上フラップ湾曲折線52,74に対して平行な方向の中央部分が緩やかに上方に凸となるように膨らむ。   A container (not shown) is placed in the packaging box 10, and the upper flaps 50 and 72 are normally folded at 90 ° by the upper flap bending lines 52 and 74. At this time, the upper flaps 50 and 72 are bent and bent along the shape of the upper flap bending lines 52 and 74, and the central portion in the direction parallel to the upper flap bending lines 52 and 74 is gently upward. Inflates to be convex.

次に、図3に示すように、折罫線34で上蓋片32を90°に正折りし、さらに差込片湾曲折線38で差込片36を90°に正折りし、差込片36を側面18の裏面に沿って差し込み、閉鎖し、図1(b)に示す状態となる。この時、上蓋片32は箱体形成片12のシートの弾性により、折罫線34に交差する方向の形状は、中央部分が緩やかに上方に凸となるように膨らむ。しかし、上フラップ50,72は、湾曲折線52,74により、上方に凸となるように膨らんだ上蓋片32の裏面に、隙間なく重ねられる。さらに、上フラップ50,72の端部50a,72aは円弧で形成されているため、上方に凸となるように膨らんだ上蓋片32の裏面の湾曲に沿うことができ、上蓋片32の裏面に隙間なく接する。   Next, as shown in FIG. 3, the upper lid piece 32 is normally folded at 90 ° by the crease line 34, and the insertion piece 36 is further normally folded by 90 ° by the insertion piece curved folding line 38. Is inserted along the back surface of the side surface 18 and closed, and the state shown in FIG. At this time, the shape of the upper lid piece 32 in the direction intersecting with the crease line 34 swells so that the central portion gently protrudes upward due to the elasticity of the sheet of the box forming piece 12. However, the upper flaps 50 and 72 are overlapped with the curved folding lines 52 and 74 on the back surface of the upper lid piece 32 swelled upward so as to protrude upward. Further, since the end portions 50a and 72a of the upper flaps 50 and 72 are formed in circular arcs, they can follow the curvature of the rear surface of the upper lid piece 32 that bulges upward so as to protrude upward. Contact without gaps.

側面16,20は、上フラップ湾曲折線52,74が開口縁となるが、開口縁が上方に凸となる円弧で形成されるため、上蓋片32の湾曲と一致し、上蓋片32の、折罫線24,26の延長線上に位置する一対の側縁部32aとの間の隙間が小さい。また、上蓋片32の差込片36は、差込片湾曲折線38の形状に沿って湾曲して曲げられ、上蓋片32の、差込片湾曲折線38の中心付近は緩やかに凸となり、側面18との隙間が小さくなり、差込片36の中心付近は、側面18の裏面にほぼ隙間なく接する。そして、差込片36の中心付近と、側面18の開封用押圧部60を糊付けし、包装が完了する。   The side surfaces 16 and 20 have upper flap bending fold lines 52 and 74 as opening edges, but the opening edges are formed in an arc that is convex upward, and therefore coincide with the curvature of the upper lid piece 32, The gap between the pair of side edge portions 32a located on the extended lines of the crease lines 24 and 26 is small. Further, the insertion piece 36 of the upper lid piece 32 is bent and bent along the shape of the insertion piece bending fold line 38, and the vicinity of the center of the insertion piece bending fold line 38 of the upper lid piece 32 becomes gently convex. The gap with the side surface 18 is reduced, and the vicinity of the center of the insertion piece 36 is in contact with the back surface of the side surface 18 with almost no gap. Then, the vicinity of the center of the insertion piece 36 and the opening pressing portion 60 on the side face 18 are glued together to complete the packaging.

包装箱10を開封する時は、開封用押圧部60を押して破断線62を切断し、差込片36を引き抜いて上蓋片32を開く。   When opening the packaging box 10, the opening pressing portion 60 is pushed to cut the breaking line 62, the insertion piece 36 is pulled out, and the upper lid piece 32 is opened.

この実施形態の包装箱10によれば、簡単な構造で組立が容易であり、上蓋片32と側面16,20の間が隙間なく組み立てられ、確実に収容物を包装することができる。上蓋片32の裏面と上フラップ50,72が隙間なく閉じられ、また、上蓋片32の一対の側縁部32aと側面16,20の開口縁との間の隙間が小さく、上蓋片32の差込片36と側面18の隙間も小さいため、内容物である商品を確実に被覆した状態で包装することができ、異物の混入を防ぎ、商品をきれいな状態に保つことができる。上蓋片32の再封時も同様に、隙間無く再封可能である。また、上蓋片32の差込片36と側面18の隙間が小さいことから、開封用押圧部60と差込片36を確実に糊付けして閉鎖することができる。構造がシンプルであり、組立工程が増えることが無く、手間とコストが掛からない。   According to the packaging box 10 of this embodiment, assembly is easy with a simple structure, the upper cover piece 32 and the side surfaces 16 and 20 are assembled without a gap, and the contents can be packaged reliably. The back surface of the upper lid piece 32 and the upper flaps 50 and 72 are closed without a gap, and the gap between the pair of side edge portions 32a of the upper lid piece 32 and the opening edges of the side surfaces 16 and 20 is small. Since the gap between the insert piece 36 and the side surface 18 is also small, it can be packaged in a state in which the product, which is the contents, is securely covered, and foreign matter can be prevented from being mixed and the product can be kept clean. Similarly, when the upper lid piece 32 is resealed, it can be resealed without a gap. Moreover, since the clearance gap between the insertion piece 36 of the upper cover piece 32 and the side surface 18 is small, the pressing part 60 for opening and the insertion piece 36 can be reliably glued and closed. The structure is simple, the assembly process is not increased, and labor and cost are not required.

なお、この考案の包装箱は、上記各実施の形態に限定されるものではなく、各側面の大きさや形状、底部の構造等、自由に変更可能である。収容物は、色々なものに使用することができる。箱体形成片の素材は、紙以外に合成樹脂や合成樹脂と紙を積層したもの等、自由に選択可能である。   In addition, the packaging box of this invention is not limited to said each embodiment, The magnitude | size and shape of each side surface, the structure of a bottom part, etc. can be changed freely. The contents can be used for various things. The material of the box forming piece can be freely selected such as a synthetic resin other than paper or a laminate of synthetic resin and paper.

10 包装箱
12 箱体形成片
14,16,18,20 側面
32 上蓋片
24,26,28,30,34,42,46,58,66,70,78 折罫線
36 差込片
38 差込片湾曲折線
50,72 上フラップ
50a,72a 端部
52,74 上フラップ湾曲折線
DESCRIPTION OF SYMBOLS 10 Packaging box 12 Box body formation piece 14,16,18,20 Side surface 32 Upper cover piece 24,26,28,30,34,42,46,58,66,70,78 Folded line 36 Insertion piece 38 Insertion piece Curved folding lines 50, 72 Upper flaps 50a, 72a Ends 52, 74 Upper flap curved folding lines

Claims (2)

一枚の箱体形成片から成り、前記箱体形成片には、互いに平行に連接され組立状態で筒体を形成する複数の側面と、前記側面の1つに折罫線を介して連接され前記筒体の開口部を閉鎖する上蓋片と、前記上蓋片が設けられた側面に隣接する一対の側面にそれぞれ連接して上フラップが設けられ、
前記上フラップは、前記上フラップ側に膨らむように湾曲した上フラップ湾曲折線を介して前記側面に連接し、前記上フラップ湾曲折線の両端部は、前記側面の開口縁部の角部に位置し、前記上フラップが前記側面に対して約直角に折り曲げ可能な円弧で形成され、
前記箱体形成片の組立状態では、前記上フラップは前記上フラップ湾曲折線の形状に沿って曲げられて中央部分が緩やかに上方に凸となるように膨らみ、前記上蓋片は前記上フラップの表面に重ねられ、上方に膨らむ前記上フラップに当接し上蓋片の裏面に隙間なく閉じられ、
前記上フラップの、前記上フラップ湾曲折線とは反対側の端部は、中心部分が外側に凸となる円弧で形成され、前記箱体形成片の組立状態では、前記上蓋片の裏面に前記端部が重ねられ、隙間なく閉じられることを特徴とする包装箱。
The box-forming piece is composed of a plurality of side surfaces connected in parallel to each other to form a cylindrical body in an assembled state, and connected to one of the side surfaces via a crease line. An upper lid piece that closes the opening of the cylindrical body, and an upper flap that is connected to each of a pair of side surfaces adjacent to the side surface provided with the upper lid piece,
The upper flap is connected to the side surface via an upper flap curved fold line that is curved so as to swell toward the upper flap, and both end portions of the upper flap curved fold line are formed at corners of the opening edge portion of the side surface. Located, and the upper flap is formed by an arc that can be bent at a right angle to the side surface;
In the assembled state of the box-forming piece, the upper flap is bent along the shape of the upper flap curved fold line so that the central portion gently bulges upward and the upper lid piece is the upper flap. It is overlapped on the surface and is in contact with the upper flap that swells upward and is closed without any gap on the back surface of the upper lid piece,
The end of the upper flap opposite to the upper flap curve fold line is formed by an arc whose central portion is convex outward, and in the assembled state of the box forming piece, A packaging box characterized in that the ends are stacked and closed without gaps.
前記上蓋片の前記折罫線とは反対側の端部に、差込片が差込片湾曲折線を介して設けられ、前記差込片湾曲折線は、前記差込片側に膨らむように湾曲し、前記差込片湾曲折線の両端部は、前記上蓋片の角部に位置し、前記差込片が前記上蓋片に対して約直角に折り曲げ可能な円弧で形成され、
前記包装箱を組み立てて前記上蓋片で閉鎖する時に、前記差込片は、前記差込片湾曲折線で折り曲げられ、前記上蓋片が設けられた側面に対向する前記側面の裏面に差し込まれて前記上蓋片を閉鎖し、前記上蓋片は、前記差込片湾曲折線の中心付近が緩やかに凸となり、前記差込片が差し込まれる前記側面との隙間が小さくなる請求項1記載の包装箱。
An insertion piece is provided at an end of the upper lid piece opposite to the crease line through an insertion piece bending fold line, and the insertion piece bending fold line is curved so as to swell toward the insertion piece side. And both ends of the insertion piece bending fold line are located at corners of the upper lid piece, and the insertion piece is formed by an arc that can be bent at a right angle with respect to the upper lid piece,
When the packaging box is assembled and closed with the upper lid piece, the insertion piece is bent along the insertion piece bending fold line and inserted into the back surface of the side surface facing the side surface provided with the upper lid piece. 2. The packaging box according to claim 1, wherein the upper lid piece is closed, and the upper lid piece is gently convex in the vicinity of the center of the insertion piece bending fold line so that a gap between the insertion piece and the side surface is reduced. .
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