JP2017081633A

JP2017081633A - Packing box

Info

Publication number: JP2017081633A
Application number: JP2015214918A
Authority: JP
Inventors: 秀起伊東; Hideki Ito
Original assignee: TOA SHIKOGYO KK
Current assignee: TOA SHIKOGYO KK
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2017-05-18

Abstract

PROBLEM TO BE SOLVED: To provide a packing box in which a gap is not generated by a slit or the like and which is excellent in sealability and designability.SOLUTION: In a rectangular parallelepiped packing box, inner flaps 6 are continuously provided from upper ends of left and right side plates 2 and adhesion surfaces 7 extended from the inner flaps 6 are previously adhered to the inner surfaces of side plates 2 respectively. The inner flaps 6 are formed in a hollow quadrangular prism shape, which are constituted of: an upper part surface 6b positioned near a lid plate 5; an inner part surface 6c positioned inside the packing box and having a protruding part 6ca formed at an end part near a rear plate 3; and a lower part surface 6d positioned near a bottom plate 4. A folded-back piece 8 and an insertion piece 9 are continuously provided from an upper end of the rear plate 3 and the lid plate 5 respectively. In the insertion piece 9 are formed a contact surface 9c, positioned closer to the lid plate 5 than the slit 9b, which contacts a pair of slits 9b with the folded-back piece 8 when the packing box is sealed, from both side parts positioned near the side plates 2, and a pair of locking flap parts 9d, positioned closer to the opposite side of the lid plate 5 than the slits 9b, which are pressed toward the rear plate 3 by the protruding parts 6ca of the inner flaps 6 to lock end parts 9da to an end part 8b of the folded-back piece 8.SELECTED DRAWING: Figure 2

Description

本発明は、封緘すると蓋板が開封不能にロックされる包装箱に関するものである。 The present invention relates to a packaging box in which a lid plate is locked to be unopenable when sealed.

一般に、封緘すると蓋板が開封不能にロックされる包装箱としては、前板と後板と左右の側板と下方側の底板と蓋板とからなり直方体状をなす包装箱において、蓋板の後板の上端と反対側に位置する端部から差込み片が延設されていて、蓋板と差込み片との境界の両端に一対のスリット（切り込み）が形成されていて、このスリット部分が左右の側板の上端にそれぞれ連設された内フラップと係止されて蓋板が開封不能にロックされる構造のものがある（例えば、特許文献１及び２参照。）。 In general, a packaging box in which a lid plate is locked so that it cannot be opened when sealed is a rectangular parallelepiped packaging box consisting of a front plate, a rear plate, left and right side plates, a bottom plate and a lid plate. An insertion piece extends from an end located on the opposite side of the upper end of the plate, and a pair of slits (cuts) are formed at both ends of the boundary between the lid plate and the insertion piece. There is a structure in which a lid plate is locked so as not to be unsealed by engaging with an inner flap that is continuously provided at the upper end of each side plate (see, for example, Patent Documents 1 and 2).

このような包装箱の場合、図６及び図７のごとく蓋板と差込み片との境界にスリットがあるため、封滅した際に蓋板側から見るとスリット部分が隙間として見えたり、またこのスリット部分を内フラップに係止させるために、蓋板と後板との間に隙間が生じたりして、密閉性や意匠性が大きく損なわれるという問題があった。 In the case of such a packaging box, since there is a slit at the boundary between the lid plate and the insertion piece as shown in FIGS. 6 and 7, the slit portion can be seen as a gap when viewed from the lid plate side when sealed. In order to lock the slit portion with the inner flap, there is a problem that a gap is generated between the lid plate and the rear plate, and the sealing property and the design property are greatly impaired.

このような問題に対して本発明者は、封滅時に包装箱内部に挿入される差込み片（差込みフラップ）の途中に一対のスリットを設け、また後板の上端からは包装箱内部へ折り返される折返し片を設け、折返し片の後板の上端と反対側に位置する端部に、差込み片の途中に形成されたスリットを包装箱内部で係止させることによって、外部からスリット部分が見えないようにしたり、蓋板と後板との間に隙間が生じ難いようにした（例えば、特許文献３参照。）。 In order to solve such a problem, the present inventor provides a pair of slits in the middle of the insertion piece (insertion flap) inserted into the packaging box when sealed, and is folded back into the packaging box from the upper end of the rear plate. By providing a folded piece and locking the slit formed in the middle of the insertion piece inside the packaging box at the end located on the opposite side of the upper end of the back plate of the folded piece, the slit part can not be seen from the outside Or a gap is hardly formed between the lid plate and the rear plate (see, for example, Patent Document 3).

このようにスリットの位置や構造を工夫することで、封滅した際に隙間が生じ難くなり、密閉性や意匠性が大きく改善されるが、外部から見えない包装箱内部で差込み片のスリットと折返し片の端部とを係止させることは難しく、またこのような包装箱は、一般には紙やプラスチックシートから形成されていて、包装箱の大きさや形状等によっては、蓋板等を折り曲げて封滅させる際にこれらの部材が外部に向けて湾曲しやすく平面を保つことが難しい場合も多く、その結果、蓋板と後板との間にわずかな隙間が生じる場合があった。 By devising the position and structure of the slit in this way, it becomes difficult to create a gap when sealed, and the sealing and design are greatly improved, but the insertion piece slit inside the packaging box that is not visible from the outside It is difficult to lock the end of the folded piece, and such a packaging box is generally made of paper or a plastic sheet. Depending on the size or shape of the packaging box, the lid plate or the like is folded. In many cases, these members are easily curved toward the outside when sealed, and it is difficult to maintain a flat surface. As a result, a slight gap may be formed between the lid plate and the rear plate.

特開２０００−１２８１５３号公報JP 2000-128153 A 実公平４−５３６１８号公報Japanese Utility Model Publication 4-53618 特願２０１４−８１６５０号Japanese Patent Application No. 2014-81650

本発明は前記の問題に鑑み、包装箱内部で差込み片のスリット部分を確実に係止させ、組み立て時に蓋板等が多少湾曲する部材であっても隙間が生ずることがなく、密閉性や意匠性に優れた包装箱を提供することを課題とする。 In view of the above-mentioned problems, the present invention reliably locks the slit portion of the insertion piece inside the packaging box, and there is no gap even if the cover plate or the like is slightly curved at the time of assembly. It is an object to provide a packaging box with excellent properties.

本発明者は前記課題を解決すべく鋭意検討した結果、前板、左右の側板、後板、底板、前板の上端から連設されている蓋板とからなる直方体状の包装箱において、左右の側板の上端からそれぞれ内フラップを連設させ、内フラップの側板と反対側の端部から延設された貼着面をそれぞれの側板の内面に予め貼着し、各内フラップを、包装箱が封緘される際にそれぞれ前板から後板に向けた方向に形成された折り曲げ線に沿って順次折曲して蓋板側に位置する上部面と、側板と平行で包装箱の内部に位置し後板側の端部に凸状部が形成された内部面と、底板側に位置する下部面とを構成させると共に、先端の貼着面が貼着された側板とで中空四角柱状となるように構成させ、後板の上端からは折り曲げ線を介して包装箱の内部へと折り返される折返し片を、蓋板の前板と反対側の端部からは折り曲げ線を介して差込み片をそれぞれ連設させ、差込み片には、側板側に位置する両側部からそれぞれ差込み片の折り曲げ線と平行に設けられた一対のスリットと、スリットより蓋板側に位置し包装箱が封緘された際に前板の折返し片に当接させる当接面と、スリットより蓋板と反対側に位置し包装箱が封緘された際に内フラップの凸状部によって後板側へと押されてスリット側に位置する端部が折返し片の後板と反対側に位置する端部と係止される一対の係止用フラップ部とを形成させれば、蓋板を開封不能にロックする際に、内フラップが中空四角柱状となるようにすることで、内フラップの剛性が高くなり、この内フラップに凸状部を設け、この凸状部で差込み片の係止用フラップ部を包装箱内部より後板側へ押すことで、係止用フラップ部のスリット側に位置する端部と折返し片の後板と反対側に位置する端部とを確実且つ持続して係止されることができ、また隙間が生じやすい蓋板と後板との間に対しては、中空四角柱状をなす内フラップで蓋板に連設された差込み片の当接面を包装箱内部から押して、後板に連設され包装箱内部に折り返された折返し片に押しつけるようにすることによって、確実に蓋板と後板との間に隙間が生じないようにして、密閉性や意匠性に優れた包装箱とすることができ、また、包装箱の開封時に切断されるミシン目を、後板の側板側の端部上方にそれぞれ形成させると共に、ミシン目の下端を結ぶ位置に開封時に後板の上部を外側に折り曲げて折返し片と差込み片の係止用フラップ部との係止を解除するための開封用折り曲げ線を後板に形成させれば、ミシン目を切断して、後板上部を開封用折り曲げ線に沿って外側に折り曲げるだけで、封緘された包装箱を容易に開封することができることを究明して本発明を完成させたのである。 As a result of intensive studies to solve the above problems, the inventor of the present invention has a rectangular parallelepiped packaging box including a front plate, left and right side plates, a rear plate, a bottom plate, and a lid plate continuously provided from the upper end of the front plate. Inner flaps are continuously provided from the upper ends of the side plates, and a sticking surface extending from the end opposite to the side plate of the inner flap is attached in advance to the inner surface of each side plate, and each inner flap is attached to the packaging box. When the container is sealed, it is sequentially folded along a fold line formed in the direction from the front plate to the rear plate, and the upper surface located on the lid plate side and parallel to the side plate and located inside the packaging box The inner surface of the rear plate side is formed with a convex portion and the lower surface is located on the bottom plate side, and the side plate with the front-end sticking surface is formed into a hollow quadrangular prism shape. And is folded back to the inside of the packaging box via a fold line from the upper end of the rear plate. Insert the return piece from the end opposite to the front plate of the cover plate via a fold line, and insert the fold line of the insert piece from both sides located on the side plate side. A pair of slits provided in parallel, a contact surface that is located closer to the lid plate than the slit and is brought into contact with the folded piece of the front plate when the packaging box is sealed, and located on the opposite side of the lid plate from the slit When the packaging box is sealed, it is pushed to the rear plate side by the convex portion of the inner flap, and the pair of ends that are located on the slit side are engaged with the end portions that are located on the opposite side of the folded plate When the lid plate is locked to be unopenable, the inner flap has a hollow quadrangular prism shape, which increases the rigidity of the inner flap. A convex part is provided, and the flap part for locking the insertion piece is provided by this convex part. By pushing to the rear plate side from the inside of the packaging box, the end portion located on the slit side of the locking flap portion and the end portion located on the opposite side to the rear plate of the folded piece are securely and continuously locked. For the space between the cover plate and the rear plate, which can easily generate a gap, the contact surface of the insertion piece connected to the cover plate is pushed from the inside of the packaging box with a hollow square columnar inner flap, By pressing against the folded piece that is connected to the rear plate and folded inside the packaging box, there is no gap between the lid plate and the rear plate, ensuring excellent sealing and design. A perforation to be cut when the packaging box is opened can be formed above the side plate side end of the rear plate, and the upper portion of the rear plate can be connected to the position connecting the lower end of the perforation. Folding the outer side and locking the folded piece and the insertion piece with the locking flap If the folding line for opening is released on the back plate, the perforated line is cut and the upper part of the back plate is bent outward along the folding line for opening. The present invention was completed by investigating that it can be opened.

即ち本発明は、前板、左右の側板、後板、底板、前板の上端から連設されている蓋板とからなる直方体状の包装箱であって、
左右の側板の上端からそれぞれ内フラップが連設されていて内フラップの側板と反対側の端部から延設された貼着面がそれぞれの側板の内面に予め貼着されており、
各内フラップが、包装箱が封緘される際にそれぞれ前板から後板に向けた方向に形成された折り曲げ線に沿って順次折曲されて蓋板側に位置する上部面と、側板と平行で包装箱の内部に位置し後板側の端部に凸状部が形成された内部面と、底板側に位置する下部面とから構成されていると共に、先端の貼着面が貼着された側板とで中空四角柱状をなし、
後板の上端からは折り曲げ線を介して包装箱の内部へと折り返される折返し片が、蓋板の前板と反対側の端部からは折り曲げ線を介して差込み片がそれぞれ連設されていて、
差込み片には、側板側に位置する両側部からそれぞれ差込み片の折り曲げ線と平行に設けられた一対のスリットと、スリットより蓋板側に位置し包装箱が封緘された際に前板の折返し片に当接させる当接面と、スリットより蓋板と反対側に位置し包装箱が封緘された際に内フラップの凸状部によって後板側へと押されてスリット側に位置する端部が折返し片の後板と反対側に位置する端部と係止される一対の係止用フラップ部とが形成されており、
包装箱の開封時に切断されるミシン目が、後板の側板側の端部上方にそれぞれ形成されていると共に、ミシン目の下端を結ぶ位置に開封時に後板の上部を外側に折り曲げて折返し片と差込み片の係止用フラップ部との係止を解除するための開封用折り曲げ線が後板に形成されていることを特徴とする包装箱である。 That is, the present invention is a rectangular parallelepiped packaging box comprising a front plate, left and right side plates, a rear plate, a bottom plate, and a lid plate continuously provided from the upper end of the front plate,
Inner flaps are continuously provided from the upper ends of the left and right side plates, respectively, and a sticking surface extending from the end opposite to the side plate of the inner flap is attached in advance to the inner surface of each side plate,
Each inner flap is bent along a fold line formed in the direction from the front plate to the rear plate when the packaging box is sealed, and is parallel to the side plate and the upper surface located on the lid plate side. It is composed of an inner surface that is located inside the packaging box and has a convex portion formed at the end on the rear plate side, and a lower surface that is located on the bottom plate side, and the sticking surface at the tip is stuck. A hollow square column is formed with the side plate,
From the upper end of the rear plate, a folded piece that is folded back into the inside of the packaging box via a folding line, and from the end on the opposite side of the front plate of the lid plate, an insertion piece is provided continuously via the folding line. ,
The insertion piece has a pair of slits provided parallel to the fold line of the insertion piece from both sides located on the side plate side, and the front plate is folded when the packaging box is sealed from the slit on the lid plate side. The abutting surface to be abutted against the piece, and the end located on the slit side by being pushed to the rear plate side by the convex part of the inner flap when the packaging box is sealed from the slit when the packaging box is sealed Is formed with a pair of locking flaps that are locked to the end located on the opposite side of the back plate of the folded piece,
The perforations that are cut when the packaging box is opened are formed above the side plate side end of the rear plate, respectively, and the upper portion of the rear plate is folded outward at the position where the lower end of the perforation is connected. The packaging box is characterized in that an opening fold line is formed on the rear plate for releasing the locking of the insertion piece with the locking flap portion.

また差込み片の側板側に位置する両側部から設けられた一対のスリットの各終端から差込み片の蓋板と反対側に位置する端部に向けてそれぞれ折り曲げ線が形成されていれば、係止用フラップ部が内フラップの凸状部によって後板側へと押された際に、係止用フラップ部が折り曲げ線によって容易に折曲り、後板側へと容易に押し込むことができ、包装箱が封緘された際に、係止用フラップ部の後板と反対側に位置する端部を、より確実に差込み片のスリット側に位置する端部に係止させることができて好ましく、さらに折返し片が連設されている後板の上端からその上端と反対側に位置する折返し片の端部までの長さが、差込み片が連設されている蓋板の端部から差込み片のスリットまでの長さの０．９〜１．０であれば、封滅するために折返し片の端部に差込み片のスリットを係止させるだけで、折返し片と差込み片の当接面とが平行でほぼ密着した状態となるから、蓋板と後板との間に隙間が生じ難くなって好ましいのである。 In addition, if a fold line is formed from each end of the pair of slits provided from both sides located on the side plate side of the insertion piece toward the end located on the side opposite to the lid plate of the insertion piece, When the flap part is pushed to the rear plate side by the convex part of the inner flap, the locking flap part can be easily bent by the fold line and can be easily pushed to the rear plate side. It is preferable that the end located on the side opposite to the rear plate of the locking flap portion can be more reliably locked to the end located on the slit side of the insertion piece when the seal is sealed. The length from the upper end of the rear plate where the pieces are arranged to the end of the folded piece located on the opposite side of the upper end is from the end of the lid plate where the insertion pieces are arranged to the slit of the insertion piece If it is 0.9-1.0 of the length of Just by locking the slit of the insertion piece at the end of the return piece, the folded piece and the contact surface of the insertion piece become parallel and almost in close contact with each other, so a gap is created between the lid plate and the rear plate. It becomes difficult and preferable.

本発明に係る包装箱は、前板、左右の側板、後板、底板、前板の上端から連設されている蓋板とからなる直方体状の包装箱であって、左右の側板の上端からそれぞれ内フラップが連設されていて内フラップの側板と反対側の端部から延設された貼着面がそれぞれの側板の内面に予め貼着されており、各内フラップが、包装箱が封緘される際にそれぞれ前板から後板に向けた方向に形成された折り曲げ線に沿って順次折曲されて蓋板側に位置する上部面と、側板と平行で包装箱の内部に位置し後板側の端部に凸状部が形成された内部面と、底板側に位置する下部面とから構成されていると共に、先端の貼着面が貼着された側板とで中空四角柱状をなし、後板の上端からは折り曲げ線を介して包装箱の内部へと折り返される折返し片が、蓋板の前板と反対側の端部からは折り曲げ線を介して差込み片がそれぞれ連設されていて、差込み片には、側板側に位置する両側部からそれぞれ差込み片の折り曲げ線と平行に設けられた一対のスリットと、スリットより蓋板側に位置し包装箱が封緘された際に前板の折返し片に当接させる当接面と、スリットより蓋板と反対側に位置し包装箱が封緘された際に内フラップの凸状部によって後板側へと押されてスリット側に位置する端部が折返し片の後板と反対側に位置する端部と係止される一対の係止用フラップ部とが形成されているから、蓋板を開封不能にロックする際に、内フラップが中空四角柱状となって剛性が高くなり、この内フラップに凸状部が設けられていて、この凸状部で差込み片の係止用フラップ部を包装箱内部より後板側へと押すことで、係止用フラップ部のスリット側に位置する端部と折返し片の後板と反対側に位置する端部とを確実且つ持続して係止されることができ、また隙間が生じやすい蓋板と後板との間に対しては、中空四角柱状をなす内フラップで蓋板に連設された差込み片の当接面を包装箱内部から押して、後板に連設され包装箱内部に折り返された折返し片に押しつけるようにすることで、確実に蓋板と後板との間に隙間が生じないようにして、密閉性や意匠性に優れた包装箱とすることができ、また包装箱の開封時に切断されるミシン目が、後板の側板側の端部上方にそれぞれ形成されていると共に、ミシン目の下端を結ぶ位置に開封時に後板の上部を外側に折り曲げて折返し片と差込み片の係止用フラップ部との係止を解除するための開封用折り曲げ線が後板に形成されているから、ミシン目を切断して、後板上部を開封用折り曲げ線に沿って外側に折り曲げるだけで、封緘された包装箱を容易に開封することができるのである。 A packaging box according to the present invention is a rectangular parallelepiped packaging box including a front plate, left and right side plates, a rear plate, a bottom plate, and a lid plate continuously provided from the upper ends of the front plates, from the upper ends of the left and right side plates. Inner flaps are connected to each other, and a sticking surface extending from the end opposite to the side plate of the inner flap is attached in advance to the inner surface of each side plate, and each inner flap is sealed with a packaging box. The upper surface located on the lid plate side, which is sequentially bent along the fold line formed in the direction from the front plate to the rear plate, and the rear side located parallel to the side plate and inside the packaging box It is composed of an inner surface with a convex portion formed at the end on the plate side and a lower surface located on the bottom plate side, and a side plate with a sticking surface at the tip forms a hollow square pillar shape The folded piece that is folded back from the upper end of the rear plate to the inside of the packaging box through the folding line is in front of the lid plate. Insertion pieces are connected to each other through a fold line from the end opposite to each other, and a pair of insertion pieces are provided in parallel to the fold line of the insertion piece from both sides located on the side plate side. When the packaging box is sealed, located on the opposite side of the lid plate from the slit, the abutment surface that contacts the folded piece of the front plate when the packaging box is sealed from the slit and the packaging box is sealed A pair of locking flap portions that are pushed to the rear plate side by the convex portion of the inner flap and the end portion positioned on the slit side is locked with the end portion located on the side opposite to the rear plate of the folded piece Therefore, when locking the lid plate so that it cannot be opened, the inner flap becomes a hollow quadrangular prism and the rigidity is increased, and this inner flap is provided with a convex portion, and this convex portion Push the locking part of the insertion piece from the inside of the packaging box toward the rear plate. Thus, the end portion located on the slit side of the locking flap portion and the end portion located on the side opposite to the rear plate of the folded piece can be reliably and continuously locked, and a gap is easily generated. For the space between the cover plate and the back plate, the contact surface of the insertion piece connected to the cover plate is pushed from the inside of the packaging box with an inner flap having a hollow quadrangular prism shape. By pressing against the folded piece folded back, it is possible to ensure that there is no gap between the cover plate and the rear plate, and to make a packaging box with excellent sealing and design properties, The perforations that are cut when the packaging box is opened are formed above the side plate side end of the rear plate, respectively, and the upper portion of the rear plate is folded outward at the position where the lower end of the perforation is connected. Bending for opening to release the locking of the plug with the locking flap Since the crease is formed on the rear plate, the sealed packaging box can be opened easily by simply cutting the perforation and bending the upper portion of the rear plate outward along the folding line for opening. is there.

また差込み片の側板側に位置する両側部から設けられた一対のスリットの各終端から差込み片の蓋板と反対側に位置する端部に向けてそれぞれ折り曲げ線が形成されている態様では、係止用フラップ部が内フラップの凸状部によって後板側へと押された際に、係止用フラップ部が折り曲げ線によって容易に折曲り、後板側へと容易に押し込むことができ、包装箱が封緘された際に、係止用フラップ部の後板と反対側に位置する端部を、より確実に差込み片のスリット側に位置する端部に係止させることができて好ましく、さらに折返し片が連設されている後板の上端からその上端と反対側に位置する折返し片の端部までの長さが、差込み片が連設されている蓋板の端部から差込み片のスリットまでの長さの０．９〜１．０である態様では、封滅するために折返し片の端部に差込み片のスリットを係止させるだけで、折返し片と差込み片の当接面とが平行でほぼ密着した状態となるから、蓋板と後板との間に隙間が生じ難くなって好ましいのである。 Further, in the aspect in which the fold line is formed from each end of the pair of slits provided from both sides located on the side plate side of the insertion piece toward the end located on the opposite side to the lid plate of the insertion piece, When the stop flap is pushed to the rear plate by the convex part of the inner flap, the locking flap can be easily bent by the fold line and easily pushed to the rear plate. When the box is sealed, it is preferable that the end located on the side opposite to the rear plate of the locking flap portion can be more securely locked to the end located on the slit side of the insertion piece, The length from the upper end of the rear plate where the folded pieces are provided continuously to the end of the folded piece located on the opposite side of the upper end is the slit of the inserted piece from the end of the lid plate where the inserted pieces are provided continuously. In an aspect of up to 0.9 to 1.0 in length, For this purpose, the folded piece and the contact surface of the inserted piece are parallel and almost in contact with each other only by locking the slit of the inserted piece at the end of the folded piece. It is preferable because a gap is less likely to occur.

本発明に係る包装箱の一実施例を示す斜視図である。It is a perspective view which shows one Example of the packaging box which concerns on this invention. 図１に示す包装箱において、包装箱内部に折返し片を折り返した後に内フラップを折り曲げて中空四角柱状にした状態を示す斜視図である。In the packaging box shown in FIG. 1, it is a perspective view which shows the state which turned the inner flap after folding the folding piece inside the packaging box, and was made into the shape of a hollow square pillar. 図１に示す包装箱を封緘した状態を示す斜視図である。It is a perspective view which shows the state which sealed the packaging box shown in FIG. 図１に示す包装箱において右側に位置する側板及び内フラップを取り除いた状態で、差込み片のスリット部分と後板から連接された折返し片とが係止される状態を説明するための部分拡大右側面図である。1 is a partially enlarged right side for explaining a state in which the slit portion of the insertion piece and the folded piece connected from the rear plate are locked with the side plate and the inner flap located on the right side removed in the packaging box shown in FIG. FIG. 図１に示す包装箱の展開図である。It is an expanded view of the packaging box shown in FIG. 封滅される前の従来型の包装箱の斜視図である。It is a perspective view of the conventional packaging box before being sealed. 図６に示す従来型の包装箱を開封不能に封滅して隙間が生じている様子を示す斜視図である。It is a perspective view which shows a mode that the conventional packaging box shown in FIG.

以下、図面を用いて本発明に係る包装箱について詳細に説明する。 Hereinafter, the packaging box according to the present invention will be described in detail with reference to the drawings.

１は本発明に係る包装箱の前板であり、２は左右の側板である。 Reference numeral 1 denotes a front plate of the packaging box according to the present invention, and 2 denotes left and right side plates.

３は後板であり、包装箱の開封時に切断されるミシン目3aが、後板３の側板２側の端部上方にそれぞれ形成されていると共に、ミシン目3aの下端を結ぶ位置に開封時に後板３の上部を外側に折り曲げて後述する折返し片８と差込み片９の係止用フラップ部9dとの係止を解除するための開封用折り曲げ線3bがこの後板３に形成されている。 Reference numeral 3 denotes a rear plate, and perforations 3a to be cut when the packaging box is opened are respectively formed above the end portions of the rear plate 3 on the side plate 2 side, and when opened at a position connecting the lower ends of the perforations 3a. An opening fold line 3b is formed on the rear plate 3 to bend the upper portion of the rear plate 3 outwardly and release the locking between a folded piece 8 and a locking flap portion 9d of the insertion piece 9, which will be described later. .

４は底板であり、この底板４の構造は本発明に係る包装箱では特に限定されるものではなく、内部に収納された物が底から抜け落ちないものであればよい。 Reference numeral 4 denotes a bottom plate, and the structure of the bottom plate 4 is not particularly limited in the packaging box according to the present invention, and any structure may be used as long as an object stored inside does not fall out from the bottom.

５は前板１の上端から連設されている蓋板であり、本発明に係る包装箱は前記前板１、左右の側板２、後板３、底板４およびこの蓋板５とからなり直方体状をなしている。なおこのような包装箱は一般にはのりしろ部を有していてこれらを貼着することで組み立てられるため、本発明に係る包装箱にもこのようなのりしろ部が設けられているが、特にその形成位置は限定されるものではないので、各図においてはのりしろ部が省略されている。 Reference numeral 5 denotes a cover plate continuously provided from the upper end of the front plate 1, and the packaging box according to the present invention comprises the front plate 1, the left and right side plates 2, the rear plate 3, the bottom plate 4 and the cover plate 5. It has a shape. In addition, since such a packaging box generally has a margin part and is assembled by sticking these, the packaging box according to the present invention is also provided with such a margin part. Since the position is not limited, the margin is omitted in each figure.

６は左右の側板２の上端からそれぞれ連設されている内フラップであり、７はこの内フラップ６の側板２と反対側の端部から延設された貼着面でありそれぞれの側板２の内面に予め貼着されている。 6 is an inner flap provided continuously from the upper ends of the left and right side plates 2, and 7 is a sticking surface extending from the end opposite to the side plate 2 of the inner flap 6. Affixed to the inner surface in advance.

また各内フラップ６は、包装箱が封緘される際にそれぞれ前板１から後板３に向けた方向に形成された折り曲げ線6aに沿って順次折曲されて蓋板５側に位置する上部面6bと、側板２と平行で包装箱の内部に位置し後板３側の端部に凸状部6caが形成された内部面6cと、底板４側に位置する下部面6dとから構成されていると共に、先端の貼着面７が貼着された側板２とで中空四角柱状をなすように形成されている。 Each of the inner flaps 6 is sequentially bent along a fold line 6a formed in a direction from the front plate 1 to the rear plate 3 when the packaging box is sealed, and is located on the lid plate 5 side. It is composed of a surface 6b, an inner surface 6c which is parallel to the side plate 2 and is located inside the packaging box and has a convex portion 6ca formed at the end on the rear plate 3 side, and a lower surface 6d which is located on the bottom plate 4 side. In addition, it is formed so as to form a hollow quadrangular prism shape with the side plate 2 to which the sticking surface 7 at the tip is stuck.

８は後板３の上端から折り曲げ線8aを介して連設されていて包装箱の内部へと折り返される折返し片である。なお本発明に係る包装箱では、折返し片８を包装箱の内部へと折り返した後に内フラップ６を中空四角柱状となるように折り曲げて、折り返した折返し片８と内フラップ６の後板３側の側縁との間に、後述する差込み片９を差し込んで封緘される。 Reference numeral 8 denotes a folded piece which is continuously provided from the upper end of the rear plate 3 via a folding line 8a and is folded back into the packaging box. In the packaging box according to the present invention, after the folded piece 8 is folded back into the packaging box, the inner flap 6 is folded into a hollow quadrangular prism shape, and the folded folded piece 8 and the inner flap 6 on the rear plate 3 side. An insertion piece 9 to be described later is inserted and sealed between the two side edges.

９は蓋板５の前板１と反対側の端部から折り曲げ線9aを介して連設されている差込み片である。この差込み片９には、側板２側に位置する両側部からそれぞれ差込み片９の折り曲げ線9aと平行に設けられた一対のスリット9bと、スリット9bより蓋板５側に位置し包装箱が封緘された際に前板１の折返し片８に当接させる当接面9cと、スリット9bより蓋板５と反対側に位置し包装箱が封緘された際に内フラップ６の凸状部6caによって後板３側へと押されてスリット9b側に位置する端部9daが折返し片８の後板３と反対側に位置する端部8bと係止される一対の係止用フラップ部9dとが形成されている。 Reference numeral 9 denotes an insertion piece which is connected from the end of the lid plate 5 on the side opposite to the front plate 1 via a folding line 9a. The insertion piece 9 includes a pair of slits 9b provided in parallel to the fold line 9a of the insertion piece 9 from both sides located on the side plate 2 side, and a packaging box positioned on the lid plate 5 side from the slit 9b. By the abutment surface 9c to be brought into contact with the folded piece 8 of the front plate 1 and the convex portion 6ca of the inner flap 6 when the packaging box is sealed on the opposite side of the lid plate 5 from the slit 9b. There is a pair of locking flaps 9d that are pushed toward the rear plate 3 and the end portion 9da located on the slit 9b side is latched with the end portion 8b located on the opposite side to the rear plate 3 of the folded piece 8. Is formed.

ｈは折返し片８が連設されている後板３の上端からその上端と反対側に位置する折返し片８の端部までの長さである。 h is the length from the upper end of the rear plate 3 where the folded pieces 8 are continuously provided to the end of the folded piece 8 located on the opposite side of the upper end.

このような本発明に係る包装箱を封緘するには、先ず本発明に係る包装箱を、図４(Ｉ)及び図１のように蓋板５を開けて開口させた状態で内包物（図示なし）を収納する。その後、包装箱内部に折返し片８を折り返し、内フラップ６を中空四角柱状となるように折り曲げて図４(II)及び図２のような状態にする。 In order to seal such a packaging box according to the present invention, first, the packaging box according to the present invention is opened with the cover plate 5 opened as shown in FIGS. None). Thereafter, the folded piece 8 is folded inside the packaging box, and the inner flap 6 is folded so as to have a hollow quadrangular prism shape, and the state shown in FIGS. 4 (II) and 2 is obtained.

次に折り返した折返し片８と内フラップ６の後板３側の側縁との間に、差込み片９を差し込み（図４(III)）、最終的には図４(IV)及び図３の位置まで、差込み片９を差し込むことによって、差し込まれた差込み片９の一対の係止用フラップ部9dが内フラップ６の凸状部6caによって後板３側へと押されて、スリット9b側に位置する端部9daが折返し片８の後板３と反対側に位置する端部8bと係止されるのである。 Next, an insertion piece 9 is inserted between the folded-back piece 8 and the side edge of the inner flap 6 on the rear plate 3 side (FIG. 4 (III)), and finally, as shown in FIG. 4 (IV) and FIG. By inserting the insertion piece 9 to the position, the pair of locking flap portions 9d of the inserted piece 9 is pushed toward the rear plate 3 side by the convex portion 6ca of the inner flap 6, and is moved toward the slit 9b side. The positioned end portion 9da is engaged with the end portion 8b positioned on the side opposite to the rear plate 3 of the folded piece 8.

なお差込み片９の側板２側に位置する両側部から設けられた一対のスリット9bの各終端9baから差込み片９の蓋板５と反対側に位置する端部に向けてそれぞれ折り曲げ線9daが形成されていれば、係止用フラップ部9dが内フラップ６の凸状部6caによって後板３側へと押された際に、係止用フラップ部9dが折り曲げ線9daによって容易に折曲り、後板３側へと容易に押し込むことができ、包装箱が封緘された際に、係止用フラップ部9dの後板３と反対側に位置する端部8bを、より確実に差込み片９のスリット9b側に位置する端部9daに係止させることができて好ましいのである。 A bending line 9da is formed from each end 9ba of the pair of slits 9b provided on both sides of the insertion piece 9 located on the side plate 2 side toward the end of the insertion piece 9 located on the opposite side of the lid plate 5. If the locking flap portion 9d is pushed toward the rear plate 3 by the convex portion 6ca of the inner flap 6, the locking flap portion 9d is easily bent by the fold line 9da, When the packaging box is sealed, the end 8b located on the side opposite to the rear plate 3 of the locking flap portion 9d is more reliably inserted into the slit of the insertion piece 9 when the packaging box is sealed. This is preferable because it can be locked to the end portion 9da located on the 9b side.

また折返し片８が連設されている後板３の上端からその上端と反対側に位置する折返し片８の端部までの長さｈが、差込み片９が連設されている蓋板５の端部から差込み片９のスリット9bまでの長さの０．９〜１．０であれば、封滅するために折返し片８の端部に差込み片９のスリット9bを係止させた際に、折返し片８と差込み片９の当接面9cとが平行でほぼ密着した状態となるから、蓋板５と後板３との間に隙間が生じ難くなって好ましいのである。なお折返し片８が連設されている後板３の上端からその上端と反対側に位置する折返し片８の端部までの長さｈを、差込み片９が連設されている蓋板５の端部から差込み片９のスリット9bまでの長さの０．９〜１．０としたのは、１．０を超えると折返し片８の端部までの長さｈが長くなりすぎて、差込み片９のスリット9bと係止させることができなくなり、また０．９未満であると、折返し片８の端部までの長さｈが短くなりすぎて、差込み片９をたわませて係止させなければならないので、蓋板５と後板３との間に隙間が生じやすくなる場合があるからである。 The length h from the upper end of the rear plate 3 on which the folded piece 8 is provided continuously to the end of the folded piece 8 located on the opposite side of the upper end of the rear plate 3 is the length of the cover plate 5 on which the insertion piece 9 is provided. If the length from the end portion to the slit 9b of the insertion piece 9 is 0.9 to 1.0, when the slit 9b of the insertion piece 9 is locked to the end portion of the folded piece 8 for sealing, Since the folded piece 8 and the contact surface 9c of the insertion piece 9 are in parallel and almost in close contact with each other, a gap is not easily formed between the lid plate 5 and the rear plate 3, which is preferable. In addition, the length h from the upper end of the rear plate 3 on which the folded piece 8 is continuously provided to the end portion of the folded piece 8 located on the opposite side of the upper end is set to the length of the cover plate 5 on which the insertion piece 9 is provided. The reason why the length from the end to the slit 9b of the insertion piece 9 is 0.9 to 1.0 is that the length h from the end to the end of the folded piece 8 becomes too long. When it is impossible to be engaged with the slit 9b of the piece 9, and when it is less than 0.9, the length h to the end of the folded piece 8 becomes too short, and the insertion piece 9 is bent and engaged. This is because a gap may easily be formed between the cover plate 5 and the rear plate 3.

以上のように本発明に係る包装箱は、従来のように蓋板５と差込み片９との間にスリットを設けないことによって、隙間が生じることがなく、また内フラップ６を剛性の高い中空四角柱状として、差込み片９を後板３側へと包装箱内部から押すことで、包装箱内部で係止用フラップ部9dの後板３と反対側に位置する端部8bを、差込み片９のスリット9b側に位置する端部9daに確実に係止させて、蓋板５を確実且つ持続して開封不能にロックさせることができ、更に蓋板５と後板３との間で隙間ができないように折返し片８に差込み片９の当接面9cを確実に当接させることができるので、封緘した際に、包装箱が略凹凸のない綺麗な直方体となり、密閉性や意匠性が損なわれることがないのである。 As described above, the packaging box according to the present invention does not have a gap by providing no slit between the cover plate 5 and the insertion piece 9 as in the prior art, and the inner flap 6 has a highly rigid hollow. By pushing the insertion piece 9 toward the rear plate 3 from the inside of the packaging box as a quadrangular prism shape, the end portion 8b located on the opposite side of the rear plate 3 to the locking flap portion 9d is inserted into the insertion piece 9 inside the packaging box. The lid 9 can be securely locked to the end 9da located on the slit 9b side so that the lid plate 5 can be reliably and continuously locked so that it cannot be opened. Further, there is a gap between the lid plate 5 and the rear plate 3. Since the contact surface 9c of the insertion piece 9 can be reliably brought into contact with the folded piece 8 so that it cannot be done, the packaging box becomes a beautiful rectangular parallelepiped with no unevenness when sealed, and the sealing and design properties are impaired. It will not be done.

１前板
２側板
３後板
3a ミシン目
3b 開封用折り曲げ線
４底板
５蓋板
６内フラップ
6a 折り曲げ線
6b 上部面
6c 内部面
6ca 凸状部
6d 下部面
７貼着面
８折返し片
8a 折り曲げ線
8b 後板と反対側に位置する端部
９差込み片
9a 折り曲げ線
9b スリット
9ba 終端
9c 当接面
9d 係止用フラップ部
9da 端部
ｈ後板の上端からその上端と反対側に位置する折返し片の端部までの長さ 1 Front plate 2 Side plate 3 Rear plate
3a perforation
3b Unfolding line 4 Bottom plate 5 Lid plate 6 Inner flap
6a Folding line
6b Top surface
6c Internal surface
6ca Convex part
6d Lower surface 7 Adhering surface 8 Folded piece
8a Folding line
8b End located on the opposite side of the rear plate 9 Insertion piece
9a Folding line
9b slit
9ba termination
9c Contact surface
9d Flap for locking
9da End h Length from the upper end of the rear plate to the end of the folded piece located on the opposite side of the upper end

Claims

前板(１)、左右の側板(２)、後板(３)、底板(４)、該前板(１)の上端から連設されている蓋板(５)とからなる直方体状の包装箱であって、
左右の該側板(２)の上端からそれぞれ内フラップ(６)が連設されていて該内フラップ(６)の該側板(２)と反対側の端部から延設された貼着面(７)がそれぞれの該側板(２)の内面に予め貼着されており、
各内フラップ(６)が、包装箱が封緘される際にそれぞれ該前板(１)から該後板(３)に向けた方向に形成された折り曲げ線(6a)に沿って順次折曲されて蓋板(５)側に位置する上部面(6b)と、該側板(２)と平行で包装箱の内部に位置し後板(３)側の端部に凸状部(6ca)が形成された内部面(6c)と、底板(４)側に位置する下部面(6d)とから構成されていると共に、先端の該貼着面(７)が貼着された該側板(２)とで中空四角柱状をなし、
該後板(３)の上端からは折り曲げ線(8a)を介して包装箱の内部へと折り返される折返し片(８)が、該蓋板(５)の該前板(１)と反対側の端部からは折り曲げ線(9a)を介して差込み片(９)がそれぞれ連設されていて、
該差込み片(９)には、側板(２)側に位置する両側部からそれぞれ該差込み片(９)の折り曲げ線(9a)と平行に設けられた一対のスリット(9b)と、該スリット(9b)より蓋板(５)側に位置し包装箱が封緘された際に該前板(１)の折返し片(８)に当接させる当接面(9c)と、該スリット(9b)より該蓋板(５)と反対側に位置し包装箱が封緘された際に該内フラップ(６)の凸状部(6ca)によって後板(３)側へと押されてスリット(9b)側に位置する端部(9da)が該折返し片(８)の該後板(３)と反対側に位置する端部(8b)と係止される一対の係止用フラップ部(9d)とが形成されており、
包装箱の開封時に切断されるミシン目(3a)が、該後板(３)の側板(２)側の端部上方にそれぞれ形成されていると共に、該ミシン目(3a)の下端を結ぶ位置に開封時に該後板(３)の上部を外側に折り曲げて該折返し片(８)と該差込み片(９)の係止用フラップ部(9d)との係止を解除するための開封用折り曲げ線(3b)が該後板(３)に形成されていることを特徴とする包装箱。 A rectangular parallelepiped packaging comprising a front plate (1), left and right side plates (2), a rear plate (3), a bottom plate (4), and a lid plate (5) connected from the upper end of the front plate (1). A box,
Inner flaps (6) are continuously provided from the upper ends of the left and right side plates (2), respectively, and a sticking surface (7) extending from the end of the inner flap (6) opposite to the side plates (2). ) Is previously attached to the inner surface of each side plate (2),
Each inner flap (6) is sequentially folded along a folding line (6a) formed in a direction from the front plate (1) to the rear plate (3) when the packaging box is sealed. The upper surface (6b) located on the lid plate (5) side and the convex portion (6ca) are formed at the end on the rear plate (3) side in parallel with the side plate (2) and inside the packaging box The side plate (2) having the inner surface (6c) formed on the bottom plate (4) and the lower surface (6d) positioned on the bottom plate (4) side, and the sticking surface (7) on the tip is attached. In the form of a hollow square column,
A folded piece (8) folded from the upper end of the rear plate (3) to the inside of the packaging box via a folding line (8a) is located on the opposite side of the front plate (1) of the lid plate (5). Insert pieces (9) are connected to each other through the folding line (9a) from the end,
The insertion piece (9) includes a pair of slits (9b) provided in parallel with the fold line (9a) of the insertion piece (9) from both sides located on the side plate (2) side, and the slit ( 9b) a contact surface (9c) which is positioned closer to the cover plate (5) than the front plate (1) when the packaging box is sealed, and the slit (9b) When the packaging box is sealed on the side opposite to the lid plate (5), it is pushed to the rear plate (3) side by the convex portion (6ca) of the inner flap (6), and the slit (9b) side A pair of locking flap portions (9d) which are engaged with the end portion (8b) located on the side opposite to the rear plate (3) of the folded piece (8). Formed,
The perforation (3a) to be cut when the packaging box is opened is formed above the end of the rear plate (3) on the side plate (2) side, and is connected to the lower end of the perforation (3a). When opening, the upper part of the rear plate (3) is bent outward so that the folded back piece (8) and the insertion flap (9) are unlocked from the locking flap (9d). A packaging box in which a line (3b) is formed on the rear plate (3).

差込み片(９)の側板(２)側に位置する両側部から設けられた一対のスリット(9b)の各終端(9ba)から該差込み片(９)の蓋板(５)と反対側に位置する端部に向けてそれぞれ折り曲げ線(9db)が形成されている請求項１に記載の包装箱。 The insertion piece (9) is located on the side opposite to the lid plate (5) of the insertion piece (9) from each end (9ba) of the pair of slits (9b) provided on both sides located on the side plate (2) side. The packaging box according to claim 1, wherein a fold line (9db) is formed toward each of the end portions.

折返し片(８)が連設されている後板(３)の上端からその上端と反対側に位置する折返し片(８)の端部までの長さ(ｈ)が、差込み片(９)が連設されている蓋板(５)の端部から差込み片(９)のスリット(9b)までの長さの０．９〜１．０である請求項１又は２に記載の包装箱。 The length (h) from the upper end of the rear plate (3) to which the folded piece (8) is continuously provided to the end of the folded piece (8) located on the opposite side of the upper end is the insertion piece (9). The packaging box according to claim 1 or 2, which is 0.9 to 1.0 in length from the end of the lid plate (5) provided continuously to the slit (9b) of the insertion piece (9).