JP2017145032A

JP2017145032A - Bottom box

Info

Publication number: JP2017145032A
Application number: JP2016029163A
Authority: JP
Inventors: 勝典塚本; Katsunori Tsukamoto; 佳洋坂; Yoshihiro Saka
Original assignee: Chuoh Pack Industry Co Ltd; Rinnai Corp
Current assignee: Chuoh Pack Industry Co Ltd; Rinnai Corp
Priority date: 2016-02-18
Filing date: 2016-02-18
Publication date: 2017-08-24
Anticipated expiration: 2036-02-18
Also published as: JP6599793B2

Abstract

PROBLEM TO BE SOLVED: To provide a bottom box which can store an object to be bundled and can prevent the object to be bundled from being damaged or jumping out due to impact or vibration during transportation.SOLUTION: A bottom box Bb is assembled in a box shape with an open top face from one corrugated cardboard sheet and has an inner box Ib for storing an object to be bundled. A sheet 3 for the inner box is provided continuously to a side wall sheet part 21 of the bottom box and comprises: a first inside plate part 31 folded at a first folding line and folded back to a position facing the side wall sheet part; an inner bottom plate part 32 folded at a second folding line with respect to the first inside plate part; a second inside plate part 33 folded at a third folding line with respect to the inner bottom plate part to face the first inside plate part; and an inner cover plate part 34 folded at a forth folding line 34a with respect to the second inside plate part to face the inner bottom plate part. A pair of third inside plate parts 36 covering opening surfaces on both sides in a flow direction in an assembled posture are provided continuously to the first inside plate part through a fifth folding line, and lock means for preventing opening of the inner cover plate part is provided.SELECTED DRAWING: Figure 9

Description

本発明は、被梱包物をその位置を規制した状態で支持し、被梱包物を梱包する外箱が外嵌される底箱に関する。 The present invention relates to a bottom box that supports an object to be packed in a state in which the position is regulated and to which an outer box for packing the object to be packed is fitted.

例えば、給湯器、給湯器用ポンプユニットや温風暖房器などの器具を出荷するのに際しては、被梱包物としての器具本体を梱包箱に収納し、この状態で目的地まで運搬することが行われている。このような梱包箱には、被梱包物をその位置を規制した状態で支持する、上面が開放された底箱と、底箱に外嵌されて被梱包物を梱包する、上面及び下面が夫々開放された外箱とを備えるものが知られている（例えば特許文献１参照）。そして、底箱に被梱包物を設置し、外箱を底箱にその上方から外嵌し、外箱の上側から、被梱包物の上端周縁部を覆うように緩衝体を嵌め込み、この状態で上面を蓋で閉じることで被梱包物が梱包される。底箱としては、底壁シート部とその底壁シート部の各辺に夫々連設される側壁シート部とを備える一枚の段ボールシートを折り曲げて上面が開放された箱状に組み立てられるものが用いられる。 For example, when shipping appliances such as a water heater, a water heater pump unit, and a hot air heater, the appliance body as a packaged item is stored in a packing box and transported to the destination in this state. ing. Such a packing box has a bottom box whose upper surface is opened to support the object to be packed in a regulated state, and an upper surface and a lower surface that are externally fitted to the bottom box to pack the object to be packed. An apparatus including an opened outer box is known (see, for example, Patent Document 1). Then, an object to be packed is installed in the bottom box, and the outer box is externally fitted to the bottom box from above, and a buffer is fitted from above the outer box so as to cover the upper peripheral edge of the object to be packed. An article to be packed is packed by closing the upper surface with a lid. As the bottom box, one that is assembled into a box shape in which a corrugated sheet having a bottom wall sheet part and a side wall sheet part continuously provided on each side of the bottom wall sheet part is folded and the upper surface is opened is assembled. Used.

ところで、出荷時、梱包箱には、例えば器具の付属品などの被同梱物を同梱することがある。従来、緩衝体を一枚の段ボールシートを折り曲げて箱状に組み立てて構成し、例えばこの緩衝体の角部を内側に凹状に凹まされることで被同梱物を収納するため収納部を一体に設けることが知られている（例えば、特許文献２参照）。 By the way, at the time of shipment, a packaged item such as an accessory of an instrument may be bundled in the packing box. Conventionally, a shock absorber is constructed by folding a corrugated cardboard sheet into a box shape. For example, the corners of this shock absorber are recessed inward so that the storage portion is integrated to accommodate the packaged items. It is known to provide (for example, refer to Patent Document 2).

然しながら、被同梱物の中には、真鍮製の逆止弁や配管用の継手のような重量物もある。この場合、上記従来例のように梱包箱の上部に位置する緩衝体に被同梱物の収納部を設けていると、梱包箱の安定性が悪い。このため、一枚の段ボールシートから組み立てられる底箱に被同梱物を収納する収納部を一体に設けることが考えられるが、特に被同梱物が重量物である場合、運搬時の衝撃（例えば落下によるもの）や振動で被同梱物が破損したり、収納部から被同梱物が飛び出して器具本体に衝突して傷つける等の不具合が生じないようにする必要がある。 However, there are heavy items such as a check valve made of brass and a joint for piping in the packaged items. In this case, when the storage part of the packaged item is provided in the shock absorber located at the upper part of the packaging box as in the conventional example, the stability of the packaging box is poor. For this reason, it is conceivable to integrally provide a storage part for storing the packaged goods in a bottom box assembled from a single cardboard sheet. However, particularly when the packaged goods are heavy objects, For example, it is necessary to prevent problems such as damage due to falling) or vibrations from being damaged, or damages such as damages caused by collisions of the packaged objects popping out of the storage unit and colliding with the instrument body.

特開２００８−２５４７９２号公報JP 2008-254792 A 特開２００８−２２２２９７号公報JP 2008-222297 A

本発明は、以上の点に鑑み、被同梱物が収納でき、しかも、運搬時の衝撃や振動で被同梱物が破損したり、飛び出することを防止できるようにした底箱を提供することをその課題とするものである。 In view of the above points, the present invention provides a bottom box that can store a packaged object and that can prevent the packaged product from being damaged or popped out by impact or vibration during transportation. This is the issue.

上記課題を解決するために、被梱包物をその位置を規制した状態で支持し、被梱包物を梱包する外箱が外嵌される本発明の底箱は、底壁シート部とその底壁シート部の各辺に夫々連設される側壁シート部とを備える一枚の段ボールシートを折り曲げて上面が開放された箱状に組み立てられると共に、被梱包物に同梱される被同梱物を収納する内箱を有し、段ボールシートの紙幅方向に位置する所定の側壁シート部に、紙幅方向にのびる内箱用シートが更に連設され、内箱用シートに、所定の側壁シート部側から順に紙幅方向に間隔を存して、流れ方向に夫々のびる第１折線、第２折線、第３折線及び第４折線が設けられ、内箱用シートが、第１折線で折り曲げられて所定の側壁シート部に対向する姿勢に折り返される第１折線と第２折線との間の第１内側板部と、第２折線で第１内側板部に対して折り曲げられて底壁シート部に重なり合う第２折線と第３折線との間の内底板部と、第３折線で内底板部に対して折り曲げられて第１内側板部に対向する第３折線と第４折線との間の第２内側板部と、第４折線で第２内側板部に対して折り曲げられて内底板部に対向する第４折線より紙幅方向外側の内蓋板部とを有し、内箱の流れ方向両側の開口面を夫々覆う一対の第３内側板部が第１内側板部及び第２内側板部の少なくとも一つに、紙幅方向にのびる第５折線を介して連設され、内蓋板部の開放を防止するロック手段を設けたことを特徴とする。 In order to solve the above problems, the bottom box of the present invention, in which the package is supported in a state where its position is regulated and the outer box for packing the package to be packaged is fitted, is the bottom wall sheet portion and its bottom wall. A cardboard sheet provided with a side wall sheet part continuously provided on each side of the sheet part is assembled into a box shape with an open upper surface, and a packaged item to be packaged with a packaged item There is an inner box to be accommodated, and an inner box sheet extending in the paper width direction is further connected to a predetermined side wall sheet portion positioned in the paper width direction of the corrugated cardboard sheet, and the inner box sheet is connected to the predetermined side wall sheet portion side. A first fold line, a second fold line, a third fold line and a fourth fold line extending in the flow direction are provided in order in the paper width direction, and the inner box sheet is folded at the first fold line to form a predetermined side wall. Between the first fold line and the second fold line that are folded back in a posture facing the seat portion. The first inner plate portion, the inner bottom plate portion between the second fold line and the third fold line that is bent with respect to the first inner plate portion at the second fold line and overlaps the bottom wall sheet portion, and the inner portion at the third fold line. A second inner plate portion between the third fold line and the fourth fold line that is bent with respect to the bottom plate portion and faces the first inner plate portion; and an inner portion that is bent with respect to the second inner plate portion at the fourth fold line. A pair of third inner plate portions each having an inner lid plate portion on the outer side in the paper width direction from the fourth folding line facing the bottom plate portion and covering the opening surfaces on both sides in the flow direction of the inner box are the first inner plate portion and the second inner plate portion. At least one of the inner plate portions is provided with a lock means that is connected to the inner plate portion via a fifth folding line extending in the paper width direction and prevents the inner lid plate portion from being opened.

本発明によれば、底箱を箱状に組み立てた後、第１内側板部、内底板部、第２内側板部、内蓋板部及び第３内側板部を第１〜第５の各折線で順次折り曲げると、底箱内に、ロック手段で開放が防止された蓋付きの内箱が形成され、この内箱に被同梱物を収納することができる。この場合、紙幅方向にのびる内箱用シートを各折線で折り曲げているため、内箱の組立姿勢では、第１内側板部、第２内側板部及び第３内側板部における段ボールシートの中芯が夫々上下方向にのびるように延在することで、内箱に十分な強度を持たせることができる。しかも、被同梱物が収納される内箱底側は、夫々がクッション性を持つ底壁シートと内底板部との二重底構造となる。その結果、内箱内に収納される被同梱物が重量物であっても、運搬時の衝撃や振動で被同梱物が破損したり、飛び出すことを防止できる。 According to the present invention, after assembling the bottom box into a box shape, the first inner plate portion, the inner bottom plate portion, the second inner plate portion, the inner lid plate portion, and the third inner plate portion are connected to each of the first to fifth plates. When the fold line is sequentially bent, an inner box with a lid that is prevented from being opened by a locking means is formed in the bottom box, and the packaged items can be stored in the inner box. In this case, since the inner box sheet extending in the paper width direction is bent at each fold line, the core of the corrugated cardboard sheet in the first inner plate portion, the second inner plate portion, and the third inner plate portion in the assembly position of the inner box. By extending so that each extends in the vertical direction, the inner box can have sufficient strength. Moreover, the bottom side of the inner box in which the items to be packaged are stored has a double bottom structure of a bottom wall sheet and an inner bottom plate portion each having cushioning properties. As a result, even if the package to be stored in the inner box is heavy, it is possible to prevent the package from being damaged or popping out due to impact or vibration during transportation.

本発明においては、前記第１折線が紙幅方向に間隔を存して形成される２本の折線で構成される場合、前記ロック手段が、第１折線の各折線間でこれら折線に沿って開設される第１挿通孔と、前記内蓋板部から紙幅方向に突出すると共に、流れ方向にのびる第６折線で内蓋板部に対して折り曲げ自在で第１挿通孔に挿入可能な爪片と、この爪片に第６折線に沿って開設される第２挿通孔と、前記所定の側壁シート部から第１挿通孔を跨いで紙幅方向にのびて第２挿通孔に挿入可能な舌片とで構成されることが好ましい。これによれば、底箱に外箱を外嵌する際に、第２挿通孔に挿入した舌片が抜け出し難い構造にできる。 In the present invention, when the first fold line is composed of two fold lines formed at intervals in the paper width direction, the locking means is established along the fold lines between the fold lines of the first fold line. A first insertion hole that protrudes in the paper width direction from the inner lid plate portion, and a claw piece that can be bent with respect to the inner lid plate portion along a sixth folding line extending in the flow direction and that can be inserted into the first insertion hole. A second insertion hole that is opened in the claw piece along the sixth folding line, and a tongue piece that extends from the predetermined side wall sheet portion across the first insertion hole in the paper width direction and can be inserted into the second insertion hole. It is preferable that it is comprised. According to this, when the outer box is externally fitted to the bottom box, the tongue piece inserted into the second insertion hole can be made difficult to come out.

ところで、底箱、ひいては、梱包箱の小型化を図るためには、被梱包物を底箱に設置した状態で被梱包物と所定の側壁シート部との間のスペースは、内箱を組み立てられるだけのものに定寸されていることが望ましい。この場合、第１内側板部と内底板部とが重なるように折り畳み、これら折り畳んだものを第１折線を起点に揺動させれば、被梱包物と所定の側壁シート部との間のスペースに挿入でき、第１内側板部が所定の側壁シート部に対向する姿勢から内底板部を展開すれば、上記スペースに内箱を組み立てることができる。然し、第１内側板部と内底板部とを折り畳むときに、第１内側板部が不必要に折り曲げられると、強度が低下する。そこで、本発明においては、前記内底板部に、前記第２折線から所定間隔を存してかつその第２折線に沿ってのびてるリード罫が設けられることが好ましい。これによれば、第１内側板部が不必要に折り曲げられて強度が低下する等の不具合は生じない。 By the way, in order to reduce the size of the bottom box and thus the packing box, the inner box can be assembled in the space between the packing object and the predetermined side wall sheet portion with the packing object installed in the bottom box. It is desirable that it is sizing only. In this case, if the first inner plate portion and the inner bottom plate portion are folded so as to overlap, and the folded one is swung from the first folding line, the space between the packaged item and the predetermined sidewall sheet portion If the inner bottom plate portion is developed from a posture in which the first inner plate portion faces the predetermined side wall sheet portion, the inner box can be assembled in the space. However, when the first inner plate portion and the inner bottom plate portion are folded, if the first inner plate portion is unnecessarily bent, the strength is lowered. Therefore, in the present invention, it is preferable that the inner bottom plate portion is provided with a lead ruler extending along the second folding line at a predetermined interval from the second folding line. According to this, the first inner side plate portion is not unnecessarily bent and a problem such as a decrease in strength does not occur.

被梱包物と被同梱物とを梱包する梱包箱を分解した状態で示す斜視図。The perspective view shown in the state which decomposed | disassembled the packaging box which packs a to-be-packaged item and a to-be-packaged item. 本実施形態の底箱の組立前の状態を示す展開図。The expanded view which shows the state before the assembly of the bottom box of this embodiment. 本実施形態の底箱の組立後の状態を示す平面図。The top view which shows the state after the assembly of the bottom box of this embodiment. （ａ）及び（ｂ）は、底箱を組み立てた状態を示す、内箱の組立手順を説明する斜視図及び断面図。(A) And (b) is the perspective view and sectional drawing explaining the assembly procedure of an inner box which shows the state which assembled the bottom box. （ａ）及び（ｂ）は、第３底板部、第１緩衝板部及び第２緩衝板部を夫々折り畳んだ状態を示す、内箱の組立手順を説明する斜視図及び断面図。(A) And (b) is the perspective view and sectional drawing explaining the assembly procedure of an inner box which show the state which each folded the 3rd bottom board part, the 1st buffer board part, and the 2nd buffer board part. （ａ）及び（ｂ）は、リード罫を起点に第１内側板部と内底板部とを折り畳んだ状態を示す、内箱の組立手順を説明する斜視図及び断面図。(A) And (b) is the perspective view and sectional drawing explaining the assembly procedure of an inner box which shows the state which folded the 1st inner side board part and the inner bottom board part from the lead rule. （ａ）及び（ｂ）は、第１折線で第１内側板部を折り返した状態を示す、内箱の組立手順を説明する斜視図及び断面図。(A) And (b) is the perspective view and sectional drawing explaining the assembly procedure of an inner box which show the state which turned up the 1st inner side board part by the 1st folding line. （ａ）及び（ｂ）は、第１内側板部、内底板部及び第２内側板部を箱状に組み立てた状態を示す、内箱の組立手順を説明する斜視図及び断面図。(A) And (b) is the perspective view and sectional drawing explaining the assembly procedure of an inner box which shows the state which assembled the 1st inner side board part, the inner bottom board part, and the 2nd inner side board part in the box shape. （ａ）及び（ｂ）は、内蓋板部を閉じた状態を示す、内箱の組立手順を説明する斜視図及び断面図。(A) And (b) is the perspective view and sectional drawing explaining the assembly procedure of an inner box which shows the state which closed the inner cover board part.

以下、図面を参照して、被梱包物を給湯器用ポンプユニット、被同梱物を重量物としての逆止弁とし、これら給湯器と逆止弁とを梱包箱に同梱する場合を例に本発明の実施形態の底箱を説明する。 Hereinafter, referring to the drawings, an example of a case where an article to be packaged is a pump unit for a hot water heater, and an article to be packaged is a check valve as a heavy object, and the water heater and the check valve are bundled in a packaging box. A bottom box according to an embodiment of the present invention will be described.

図１を参照して、ＷＢは、ポンプユニットＰｕと逆止弁Ｏｖとを同梱する梱包箱である。梱包箱ＷＢは、ポンプユニットＰｕをその位置を規制した状態で支持すると共に逆止弁Ｏｖを収納する内箱Ｉｂを有する、上面が開放された本実施形態の底箱Ｂｂと、底箱Ｂｂに外嵌されてポンプユニットＰｕを梱包する外箱Ｏｂとを備える。ポンプユニットＰｕや逆止弁Ｏｖは公知のものであるため、ここでは詳細な説明は省略する。 Referring to FIG. 1, WB is a packaging box that encloses a pump unit Pu and a check valve Ov. The packaging box WB has an inner box Ib that supports the pump unit Pu in a state where its position is regulated and accommodates the check valve Ov, and the bottom box Bb of the present embodiment with the upper surface opened, and the bottom box Bb And an outer box Ob for packing the pump unit Pu. Since the pump unit Pu and the check valve Ov are known ones, detailed description thereof is omitted here.

外箱Ｏｂは、折線を介して連設される４枚の側壁シート部１１と、各側壁シート部１１の上辺に夫々連設される蓋シート部１２とを備える一枚の段ボールシート１を折り曲げて上面及び下面が開放された箱状に組み立てたものであり、各蓋シート部１２を折り曲げて上面開口を閉じることができるようにしている。段ボールシート１としては、表ライナーと中芯と裏ライナーとで構成されるものが用いられるが、これに限定されるものではない。 The outer box Ob bends one corrugated cardboard sheet 1 including four side wall sheet portions 11 provided continuously through a folding line and a lid sheet portion 12 provided on each upper side of each side wall sheet portion 11. The upper and lower surfaces are assembled in a box shape, and each lid sheet portion 12 is bent so that the upper surface opening can be closed. As the corrugated cardboard sheet 1, one constituted by a front liner, an inner core and a back liner is used, but is not limited to this.

図２及び図３を参照して、内箱Ｉｂを有する底箱Ｂｂは、底箱用シート２と内箱用シート３とを有する一枚の段ボールシートから組み立てられる。段ボールシートとしては、上記同様、表ライナー３ａと中芯３ｂと裏ライナー３ｃとで構成されるものが用いられる。底箱用シート２は、紙幅方向に長手の底壁シート部２１とその底壁シート部２１の各辺に夫々連設される側壁シート部２２〜２５とを備える。流れ方向に位置する側壁シート部２３，２５には、底壁シート部２１の紙幅方向両端から所定長さだけ夫々突出するオーバーラップシート部２６，２６が夫々連設され、各オーバラップシート部２６，２６の所定位置には、流れ方向内方に向けて凹む凹状の切欠き２６ａが夫々設けられている。 2 and 3, the bottom box Bb having the inner box Ib is assembled from a single cardboard sheet having the bottom box sheet 2 and the inner box sheet 3. As the corrugated cardboard sheet, the one constituted by the front liner 3a, the core 3b, and the back liner 3c is used as described above. The bottom box sheet 2 includes a bottom wall sheet portion 21 that is long in the paper width direction and side wall sheet portions 22 to 25 that are connected to each side of the bottom wall sheet portion 21. Overlap sheet portions 26, 26 projecting a predetermined length from both ends in the paper width direction of the bottom wall sheet portion 21 are connected to the side wall sheet portions 23, 25 positioned in the flow direction, respectively. 26 are respectively provided with concave notches 26a that are recessed inward in the flow direction.

また、紙幅方向に位置する側壁シート部２２，２４の所定位置には、略凸状の爪片２２ａ，２４ａが形成されるように切込み２２ｂ，２４ｂが夫々設けられている。そして、底箱Ｂｂの組立時、爪片２２ａ，２４ａを切欠き２６ａに夫々係止することで、粘着テープ等を用いることなく、底箱Ｂｂが箱状に組み立てられ、その姿勢が維持できるようにしている。以下において、折線２１ａで底壁シート部２１に対して各側壁シート部２２〜２５を起立する方向に折り曲げる場合を基準とし、これと同方向に折り曲げる場合を谷折り、その逆に折り曲げる場合を山折りとして説明する。 In addition, cuts 22b and 24b are respectively provided at predetermined positions of the side wall sheet portions 22 and 24 located in the paper width direction so that substantially convex claw pieces 22a and 24a are formed. And when assembling the bottom box Bb, the claw pieces 22a and 24a are respectively engaged with the notches 26a, so that the bottom box Bb can be assembled into a box shape without using an adhesive tape or the like so that its posture can be maintained. I have to. In the following, with reference to the case where the side wall sheet portions 22 to 25 are bent with respect to the bottom wall sheet portion 21 at the folding line 21a, the case where the side wall sheet portions 22-25 are bent in the same direction is the valley fold and the case where the side wall sheet portions 22-25 are bent in the opposite direction This will be described as folding.

内箱用シート３は、紙幅方向に位置（図２中、左側に位置）する所定の側壁シート部２２に連設されている。内箱用シート３には、側壁シート部２２側から順に紙幅方向に間隔を存して、流れ方向に夫々のびる第１折線３１ａ、第２折線３２ａ、第３折線３３ａ及び第４折線３４ａが設けられている。そして、内箱用シート３が、第１折線３１ａで谷折りされて所定の側壁シート部２２に対向する姿勢に折り返される、第１折線３１ａと第２折線３２ａとの間の第１内側板部３１と、第２折線３２ａで第１内側板部３１に対して略直角に山折りされて底壁シート部２１に重なり合う、第２折線３２ａと第３折線３３ａとの間の内底板部３２と、第３折線３３ａで内底板部３２に対して略直角に山折りされて第１内側板部３１に対向する、第３折線３２ａと第４折線３３ａとの間の第２内側板部３３と、第４折線３４ａで第２内側板部３３に対して略直角に山折りされて内底板部３２に対向する、第４折線３４ａより紙幅方向外側の内蓋板部３４とを有する。 The inner box sheet 3 is connected to a predetermined side wall sheet portion 22 positioned in the paper width direction (located on the left side in FIG. 2). The inner box sheet 3 is provided with a first fold line 31a, a second fold line 32a, a third fold line 33a, and a fourth fold line 34a extending in the flow direction in order from the side wall sheet portion 22 side. It has been. Then, the inner box sheet 3 is folded at the first folding line 31a so as to face the predetermined side wall sheet portion 22, and is folded between the first folding line 31a and the second folding line 32a. 31 and an inner bottom plate portion 32 between the second fold line 32a and the third fold line 33a, which is folded at a substantially right angle with respect to the first inner plate portion 31 at the second fold line 32a and overlaps the bottom wall sheet portion 21. A second inner plate portion 33 between the third fold line 32a and the fourth fold line 33a, which is mountain-folded substantially perpendicular to the inner bottom plate portion 32 at the third fold line 33a and faces the first inner plate portion 31; And an inner lid plate part 34 that is folded at a substantially right angle with respect to the second inner plate part 33 at the fourth folding line 34a and faces the inner bottom plate part 32, and is located on the outer side in the paper width direction from the fourth folding line 34a.

第１折線３１ａは、紙幅方向に間隔を存して形成される２本の折線３１１，３１２で構成され、各折線３１１，３１２で略直角に夫々谷折りされた姿勢では、各折線３１１，３１２の間に底壁シート部２１に平行で流れ方向に長手の帯状部３１ｂが形成されるようにしている。帯状部３１ｂには、第１折線３１１，３１２に沿って後述の爪部が挿入される第１挿通孔３１ｃが開設されている。また、第１内側板部３１の流れ方向両側には、紙幅方向にのびる第５折線３１ｄを介して一対の第３内側板部３５，３５が夫々連設されている。そして、各第３内側板部３５，３５が、第５折線３１ｄで第１内側板部３１に対して略直角に夫々山折りされ、第１内側板部３１、内底板部３２、第２内側板部３３及び内蓋板部３４を第１〜第４の各折線３１ａ，３２ａ，３３ａ，３４ａで順次折り曲げて内箱Ｉｂを組み立てた内箱Ｉｂの組立姿勢で流れ方向両側の開口面を夫々覆うようにしている。 The first fold line 31a is composed of two fold lines 311 and 312 formed at intervals in the paper width direction. In the posture where the fold lines 311 and 312 are valley-folded at substantially right angles, the fold lines 311 and 312 are arranged. A belt-like portion 31b which is parallel to the bottom wall sheet portion 21 and is long in the flow direction is formed between the two. A first insertion hole 31c into which a later-described claw portion is inserted along the first folding lines 311 and 312 is formed in the belt-like portion 31b. In addition, a pair of third inner plate portions 35, 35 are connected to both sides of the first inner plate portion 31 in the flow direction via fifth folding lines 31 d extending in the paper width direction. Each of the third inner side plate portions 35 and 35 is mountain-folded at a substantially right angle with respect to the first inner side plate portion 31 at the fifth folding line 31d, and the first inner side plate portion 31, the inner bottom plate portion 32, and the second inner side plate portion The plate 33 and the inner lid plate 34 are sequentially bent at the first to fourth folding lines 31a, 32a, 33a, 34a to assemble the inner box Ib. I try to cover it.

内底板部３２の流れ方向両側には、紙幅方向にのびる第７折線３２ｂを介して一対の第１緩衝板部３６，３６が夫々連設されている。そして、各第１緩衝板部３６，３６は、第７折線３２ｂで内底板部３２に対して谷折り方向に折り返されて、内箱Ｉｂの組立姿勢で各第１緩衝板部３６，３６が内底板部３２と底壁シート部２１とに重なり合うようにしている。また、内底板部３２には、第２折線３２ａから所定間隔を存してかつこの第２折線３２ａに沿ってのびるリード罫３２ｃが設けられている。第２折線３２ａとリード罫３２ｃとの紙幅方向の間隔は、内底板部３２に各第１両緩衝板部３６，３６を重ね合せたときの厚みに応じて設定される。第２内側板部３３の流れ方向両側にもまた、紙幅方向にのびる第８折線３３ｂを介して一対の第２緩衝板部３７，３７が夫々連設されている。そして、各第２緩衝板部３７，３７は、第８折線３３ｂで第２内側板部３３に対して谷折り方向に折り返されて、各第２緩衝板部３７，３７がポンプユニットＰｕと内箱Ｉｂとの間に介在されるようにしている。 A pair of first buffer plates 36, 36 are connected to both sides of the inner bottom plate 32 in the flow direction via seventh folding lines 32b extending in the paper width direction. The first buffer plates 36 and 36 are folded back in the valley fold direction with respect to the inner bottom plate 32 at the seventh folding line 32b, and the first buffer plates 36 and 36 are assembled in the assembly posture of the inner box Ib. The inner bottom plate portion 32 and the bottom wall sheet portion 21 are overlapped with each other. In addition, the inner bottom plate portion 32 is provided with a lead ruler 32c extending from the second fold line 32a at a predetermined interval and extending along the second fold line 32a. The interval in the paper width direction between the second folding line 32a and the lead ruler 32c is set according to the thickness when the first buffer plates 36, 36 are superimposed on the inner bottom plate 32. A pair of second buffer plate portions 37 and 37 are connected to both sides of the second inner plate portion 33 in the flow direction via eighth folding lines 33b extending in the paper width direction. The second buffer plates 37 and 37 are folded back in the valley fold direction with respect to the second inner plate 33 at the eighth folding line 33b, and the second buffer plates 37 and 37 are connected to the pump unit Pu. It is designed to be interposed between the box Ib.

内蓋板部３４には紙幅方向に突出する爪片３８が連設され、流れ方向にのびる第６折線３８ａで内蓋板部３４に対して山折りされて第１挿通孔３１ｃに挿入できるようにしている。また、内蓋板部３４の所定位置には、流れ方向内方に向けて凹む凹状の切欠き３４ｂが設けられ、内箱Ｉｂの組立姿勢で内箱Ｉｂ内を視認するための覗き窓を構成するようにしている。爪片３８には、第６折線３８ａに沿って第２挿通孔３８ｂが開設され、側壁シート部２２に設けた舌片２７が挿入できるようにしている。舌片２７は、流れ方向にのびる第９折線２７ａを介して側壁シート部２２から第１挿通孔３１ｃを跨いで紙幅方向にのびるように、側壁シート２２に連設されている。この場合、舌片２７には、第９折線２７ａから間隔を存してかつ第９折線２７ａに平行に第１０折線２７ｂが設けられ、第９及び第１０の各折線２７ａ，２７ｂで略コ字状に谷折りできようになっている。以下に、図４〜図９を参照して、底箱Ｂｂ及び内箱Ｉｂの組立手順を含む、ポンプユニットＰｕと逆止弁Ｏｖとの梱包手順を説明する。 A claw piece 38 projecting in the paper width direction is connected to the inner lid plate portion 34 so that the inner lid plate portion 34 can be folded into a mountain with respect to the inner lid plate portion 34 at a sixth folding line 38a extending in the flow direction and inserted into the first insertion hole 31c. I have to. Further, a concave notch 34b that is recessed inward in the flow direction is provided at a predetermined position of the inner lid plate portion 34, and constitutes a viewing window for visually recognizing the inside of the inner box Ib in the assembly posture of the inner box Ib. Like to do. The claw piece 38 is provided with a second insertion hole 38b along the sixth folding line 38a so that the tongue piece 27 provided on the side wall sheet portion 22 can be inserted. The tongue piece 27 is connected to the side wall sheet 22 so as to extend in the paper width direction from the side wall sheet part 22 across the first insertion hole 31c via a ninth folding line 27a extending in the flow direction. In this case, the tongue piece 27 is provided with a tenth fold line 27b spaced from the ninth fold line 27a and parallel to the ninth fold line 27a. The ninth and tenth fold lines 27a and 27b are substantially U-shaped. It can be folded in a valley. Below, with reference to FIGS. 4-9, the packing procedure of pump unit Pu and check valve Ov including the assembly procedure of bottom box Bb and inner box Ib is demonstrated.

先ず、底箱Ｂｂを組み立てる。底箱Ｂｂの組立に際しては、流れ方向の側壁シート部２３，２５を各折線２１ａで谷折りして底壁シート部２１に対して起立させると共に、オーバラップシート部２６，２６を他の折線２１ｂで略直角に谷折りする。そして、紙幅方向の側壁シート部２２，２４を各折線２１ａで谷折りして底壁シート部２１に対して起立させ、この状態で爪片２２ａ，２４ａを谷折り方向に折り曲げて切欠き２６ａに夫々係止することで底箱Ｂｂを箱状に組み立てる（図４参照）。底箱Ｂｂが組み立てられると、内箱Ｂｂ内に、流れ方向の側壁シート部２３，２５の内面に沿ってポンプユニットＰｕの位置を規制する一対の規制体４を夫々設置する。各規制材４は、一枚の段ボールシートを角柱状に折り曲げ構成され、底箱Ｂｂへの規制体４の設置状態にて流れ方向内方に突出する４個の突片４１でポンプユニットＰｕの収納空間４２が区画されるようにしている。そして、収納空間４２にポンプユニットＰｕを設置した後、所定の側壁シート部２２とポンプユニットＰｕと規制体４，４とで区画されたスペースＳｐに内箱Ｉｂを組み立てる。 First, the bottom box Bb is assembled. When assembling the bottom box Bb, the side wall sheet portions 23 and 25 in the flow direction are folded at the respective folding lines 21a so as to stand up with respect to the bottom wall sheet portion 21, and the overlap sheet portions 26 and 26 are set to other folding lines 21b. Fold the valley at a right angle. Then, the side wall sheet portions 22 and 24 in the paper width direction are valley-folded at the respective folding lines 21a to stand up with respect to the bottom wall sheet portion 21. In this state, the claw pieces 22a and 24a are bent in the valley folding direction to form notches 26a. The bottom box Bb is assembled in a box shape by locking each (see FIG. 4). When the bottom box Bb is assembled, a pair of regulating bodies 4 that regulate the position of the pump unit Pu are installed in the inner box Bb along the inner surfaces of the side wall sheet portions 23 and 25 in the flow direction. Each regulating member 4 is formed by bending a single corrugated cardboard sheet into a prismatic shape, and includes four projecting pieces 41 projecting inward in the flow direction when the regulating body 4 is installed on the bottom box Bb. The storage space 42 is partitioned. Then, after the pump unit Pu is installed in the storage space 42, the inner box Ib is assembled in the space Sp defined by the predetermined side wall sheet portion 22, the pump unit Pu, and the regulating bodies 4 and 4.

内箱Ｉｂの組立に際しては、図４に示す状態から、第５折線３１ｄで第１内側板部３１に対して各第３内側板部３５，３５を山折り方向に折り畳んで第１内側板部３１に各第３内側板部３５，３５を順次重ね合わせる。そして、第７折線３２ａで内底板部３２に対して各第１緩衝板部３６，３６を谷折り方向に折り畳んで各第１緩衝板部３６，３６を内底板部３２に順次重ね合わせると共に、第８折線３３ａで第２内側板部３３に対して各第２緩衝板部３７，３７を谷折り方向に折り畳んで第２内側板部３３に各第１緩衝板部３７，３７を順次重ね合わせる（図５に示す状態）。 When assembling the inner box Ib, from the state shown in FIG. 4, the third inner plate portion 35, 35 is folded in the mountain fold direction with respect to the first inner plate portion 31 along the fifth folding line 31 d. The third inner side plate portions 35, 35 are sequentially superposed on 31. Then, the first buffer plate portions 36, 36 are folded in the valley folding direction with respect to the inner bottom plate portion 32 at the seventh folding line 32a, and the first buffer plate portions 36, 36 are sequentially overlapped with the inner bottom plate portion 32, and The second buffer plate portions 37, 37 are folded in the valley folding direction with respect to the second inner plate portion 33 at the eighth folding line 33a, and the first buffer plate portions 37, 37 are sequentially stacked on the second inner plate portion 33. (State shown in FIG. 5).

次に、第２折線３２ａで第１内側板部３１に対して内底板部３２を略直角に山折りし、リード罫３２ｃを起点にして更に略直角に山折りして内底板部３２を第３内側板部３５に重ね合わせる（図６に示す状態）。この折り畳んだものを第１折線３１ａを起点に揺動、即ち、第１折線３１１，３１２で略直角に夫々谷折りしながら、スペースＳｐに挿入し、第１内側板部３１が側壁シート２２に対向する姿勢にする（図７に示す状態）。 Next, the inner bottom plate portion 32 is folded at a substantially right angle with respect to the first inner plate portion 31 at the second folding line 32a, and then the inner bottom plate portion 32 is folded at a substantially right angle from the lead ruler 32c. 3 Overlaid on the inner plate portion 35 (state shown in FIG. 6). The folded product is swung from the first folding line 31a as a starting point, that is, inserted into the space Sp while being folded at substantially right angles at the first folding lines 311 and 312, and the first inner plate portion 31 is attached to the side wall sheet 22. Opposing postures (state shown in FIG. 7).

次に、第２内側板部３３を第３折線３３ａで内底板部３２に対して山折りしながら、内底板部３２を、各第１緩衝板部３６，３６を介して底壁シート部２１の内面に重なるように谷折り方向に折り曲げて展開する（図８に示す状態）。そして、第３内側板部３５，３５を谷折り方向に戻して両規制体４，４に夫々接触させる。これにより、底箱Ｂｂ内のスペースＳｐに、内蓋板部３４が開放状態の内箱Ｉｂが組み立てられる。この場合、各第２緩衝板部３７，３７は折り返した状態のまま保持され、ポンプユニットＰｕと内箱Ｉｂとの間で緩衝材としての役割を果たすようにしている。この状態で内箱Ｉｂに逆止弁Ｏｖを収納する。 Next, while folding the second inner side plate portion 33 with respect to the inner bottom plate portion 32 along the third folding line 33a, the inner bottom plate portion 32 is connected to the bottom wall sheet portion 21 via the first buffer plate portions 36, 36. 8 is folded and expanded in the valley folding direction so as to overlap with the inner surface (the state shown in FIG. 8). And the 3rd inner side board parts 35 and 35 are returned in the valley folding direction, and are made to contact both the regulation bodies 4 and 4, respectively. Thereby, the inner box Ib in which the inner lid plate part 34 is opened is assembled in the space Sp in the bottom box Bb. In this case, each of the second buffer plate portions 37, 37 is held in a folded state, and plays a role as a buffer material between the pump unit Pu and the inner box Ib. In this state, the check valve Ov is stored in the inner box Ib.

逆止弁Ｏｖが収納されると、内蓋板部３４を第４折線３４ａで第２内側板部３３に対して略直角に山折りすると共に、爪片３８を第６折線３８ａで内蓋板部３４に対して略直角に山折りし、爪片３８を第１挿通孔３１ｃに挿入して係止する。そして、舌片２７を第９折線２７ａ及び第１０折線２７ｂで谷折りしながら第２挿通孔３８ｂに挿入して係止する。このとき、外箱Ｏｂを底箱Ｂｂに外嵌する際に舌片２７が抜け出すことを確実に防止するために、第９折線２７ａと第１０折線２７ｂとの間に位置する舌片２７の基端部が、鉛直方向に対して内箱Ｉｂの内方に傾斜するような姿勢を取るようにしておくことが好ましい。これにより、内箱Ｉｂの上面が内蓋板部３４で覆われると共に、内蓋板部３４の開放も防止され、内箱Ｉｂがその内部に逆止弁Ｏｖを収納した状態で完全に組み立てられる。本実施形態では、第１及び第２の両挿通孔３１ｃ，３８ｂと、爪片３８と、舌片２７とでロック手段が構成される。 When the check valve Ov is housed, the inner lid plate portion 34 is folded at a fourth folding line 34a at a substantially right angle with respect to the second inner plate portion 33, and the claw piece 38 is folded at the sixth folding line 38a. The claw piece 38 is inserted into the first insertion hole 31c and is locked. Then, the tongue piece 27 is inserted and locked into the second insertion hole 38b while being valley-folded at the ninth folding line 27a and the tenth folding line 27b. At this time, in order to reliably prevent the tongue piece 27 from slipping out when the outer box Ob is fitted to the bottom box Bb, the base of the tongue piece 27 located between the ninth fold line 27a and the tenth fold line 27b is used. It is preferable to take an attitude in which the end portion is inclined inward of the inner box Ib with respect to the vertical direction. As a result, the upper surface of the inner box Ib is covered with the inner lid plate portion 34, and the opening of the inner lid plate portion 34 is prevented, and the inner box Ib is completely assembled with the check valve Ov accommodated therein. . In the present embodiment, the first and second insertion holes 31c and 38b, the claw piece 38, and the tongue piece 27 constitute a locking means.

内箱Ｉｂが組み立てられると、底箱Ｂｂにその上方から外箱Ｏｂを外嵌し、外箱Ｏｂの上側開放面から、ポンプユニットＰｕの上端周縁部を覆うように２個の緩衝体５，５を嵌め込む。緩衝体５，５としては、一枚の段ボールシートを角柱状に折り曲げて構成されるものが用いられる。そして、側壁シート部１１に対して蓋シート部１２を折り曲げて上面を閉じ、この状態で粘着テープで固定することで、梱包が終了する。 When the inner box Ib is assembled, the outer box Ob is externally fitted to the bottom box Bb from above, and the two shock absorbers 5, so as to cover the upper peripheral edge of the pump unit Pu from the upper open surface of the outer box Ob. 5 is inserted. As the shock absorbers 5 and 5, one formed by bending a single cardboard sheet into a prismatic shape is used. And the cover sheet | seat part 12 is bend | folded with respect to the side wall sheet | seat part 11, a top surface is closed, and packing is complete | finished by fixing with an adhesive tape in this state.

以上の実施形態によれば、内箱Ｉｂの組立姿勢では、第１内側板部３１、第２内側板部３２及び第３内側板部３３における内箱用シート３の中芯３ｂが夫々上下方向にのびるように延在することで、内箱Ｉｂに十分な強度を持たせることができる。しかも、逆止弁Ｏｖが収納される内箱Ｉｂの底側は、夫々がクッション性を持つ底壁シート部２１と、内底板部３２と、各第１緩衝板部３６，３６との四重底構造となる。その結果、運搬時の衝撃や振動で逆止弁Ｏｖが破損したり、飛び出すことを確実に防止できる。また、第１及び第２の両挿通孔３１ｃ，３８ｂと、爪片３８と、舌片２７とでロック手段を構成したことで、底箱Ｂｂに外箱Ｏｂを外嵌する際に、第２挿通孔３８ｂに挿入した舌片２７が抜け出し難い構造にできる。 According to the above embodiment, in the assembly posture of the inner box Ib, the inner core 3b of the inner box sheet 3 in the first inner plate part 31, the second inner plate part 32, and the third inner plate part 33 is in the vertical direction. By extending so as to extend, the inner box Ib can have sufficient strength. In addition, the bottom side of the inner box Ib in which the check valve Ov is accommodated is a quadruple of the bottom wall seat portion 21, the inner bottom plate portion 32, and the first buffer plate portions 36, 36 each having cushioning properties. It becomes the bottom structure. As a result, it is possible to reliably prevent the check valve Ov from being damaged or popping out due to impact or vibration during transportation. Further, since the first and second insertion holes 31c, 38b, the claw piece 38, and the tongue piece 27 constitute the locking means, the second box is fitted into the bottom box Bb when the outer box Ob is externally fitted. The tongue piece 27 inserted into the insertion hole 38b can be structured so as not to easily come out.

更に、リード罫３２ｃを設けたことで、第１内側板部３１と各第３側板部３５，３５とが重なるように折り畳むと共に、内底板部３３と各第１緩衝板部３６，３６とが重なるように折り畳んだ状態で、リード罫３２ｃを起点に折り曲げて内底板部３３が上側に位置する第３側板部３５に重なるように折り畳む際、第１内側板部３１が不必要に折り曲げられてこの第１内側板部３１の強度が低下する等の不具合が生じることを防止できる。 Further, by providing the lead ruled line 32c, the first inner side plate portion 31 and the third side plate portions 35, 35 are folded so as to overlap each other, and the inner bottom plate portion 33 and the first buffer plate portions 36, 36 are connected to each other. When folded so as to overlap, the first inner plate 31 is unnecessarily folded when folded so that the inner bottom plate portion 33 overlaps the third side plate portion 35 located on the upper side by folding the lead ruled line 32c as a starting point. It is possible to prevent problems such as a decrease in strength of the first inner plate portion 31.

以上、本発明の実施形態について説明したが、本発明は上記のものに限定されるものではない。上記実施形態では、一対の第３内側板部３５，３５が第１内側板部３１に第５折線３１ｄを介して連設されているものを例に説明したが、これに限定されるものではなく、例えば、第２内側板部３３に設けた第２緩衝板部３７，３７で構成することもできる。なお、上記実施形態において、一対の第２緩衝板部３７，３７を谷折りして第３内側板部３５，３５に夫々重なり合うようにし、組立姿勢における内箱Ｉｂの強度を高めるようにしてもよい。また、上記実施形態では、内底板部３２に第１緩衝板部３６，３６が連設されたものを例に説明したが、第１緩衝板部３６，３６は省略することもできる。この場合、第２折線３２ａとリード罫３２ｃとの紙幅方向の間隔は、段ボールシートの厚みに応じて適宜設定される。 As mentioned above, although embodiment of this invention was described, this invention is not limited to said thing. In the said embodiment, although a pair of 3rd inner side board parts 35 and 35 were connected to the 1st inner side board part 31 via the 5th folding line 31d as an example, it was not limited to this. For example, the second buffer plate portions 37 and 37 provided on the second inner plate portion 33 may be used. In the above embodiment, the pair of second buffer plates 37, 37 are folded in a valley so as to overlap the third inner plates 35, 35, respectively, so as to increase the strength of the inner box Ib in the assembly posture. Good. In the above embodiment, the first buffer plate portions 36 and 36 are connected to the inner bottom plate portion 32 as an example. However, the first buffer plate portions 36 and 36 may be omitted. In this case, the interval in the paper width direction between the second folding line 32a and the lead ruler 32c is appropriately set according to the thickness of the cardboard sheet.

また、上記実施形態では、第１及び第２の両挿通孔３１ｃ，３８ａと、爪片３８と、舌片２７とでロック手段が構成されるものを例に説明したが、これに限定されるものではなく、例えば上記底箱Ｂｂのように爪片と切欠きとでその開放を防止するロック手段を構成することができ、また、内蓋板部３４の先端を第１側板部３１の上端に重ね、この状態で粘着テープを貼付するようにしてもよい。この場合、粘着テープでロック手段が構成される。 In the above embodiment, the first and second insertion holes 31c, 38a, the claw piece 38, and the tongue piece 27 are described as an example of the locking means. However, the present invention is not limited to this. For example, like the bottom box Bb, a locking means for preventing the opening of the claw piece and the notch can be configured, and the front end of the inner lid plate portion 34 is connected to the upper end of the first side plate portion 31. The adhesive tape may be applied in this state. In this case, the locking means is constituted by an adhesive tape.

更に、上記実施形態では、第３内側板部３３が一対の規制体４，４でその開放ができないようにしたものを例に説明したが、これに限定されるものではなく、上記同様、爪片と切欠きとでその開放が防止されるようにすることもできる。また、上記実施形態では、底箱Ｂｂの組立後、底箱Ｂｂ内に規制体４，４を設置するものを例に説明したが、被梱包物の位置が規制できるものであれば、これに限定されるものではなく、また、底箱用シート２を組み立てるときに同時に規制体４，４が同時に組み立てられるようにすることもできる。 Furthermore, in the above embodiment, the third inner plate portion 33 has been described as an example in which the pair of regulating bodies 4 and 4 cannot be opened. The opening can be prevented by the piece and the notch. Moreover, in the said embodiment, after assembling bottom box Bb, although demonstrated as an example what installed the regulating bodies 4 and 4 in bottom box Bb, if the position of a to-be-packaged item can be regulated, this will be used. It is not limited, and when the bottom box sheet 2 is assembled, the restriction bodies 4 and 4 can be assembled at the same time.

ＷＢ…梱包箱、Ｂｂ…底箱、Ｉｂ…内箱、Ｏｂ…外箱、Ｐｕ…給湯器用ポンプユニット（被梱包物）、Ｏｖ…逆止弁（被同梱物）、２…底箱用シート（一枚の段ボールシート）、３…内箱用シート、２１…底壁シート、２２〜２５…側壁シート、２７…舌片（ロック手段）、３１…第１内側板部、３１ａ…第１折線、３１ｃ…第１挿通孔（ロック手段）、３１１，３１２…第１折線を構成する折線、３１ｄ…第５折線、３２…内底板部、３２ａ…第２折線、３２ｃ…リード罫、３３…第２内側板部、３３ａ…第３折線、３４…内蓋板部、３４ａ…第４折線、３５…第３内側板部、３８…爪片（ロック手段）、３８ａ…第６折線、３８ｂ…第２挿通孔（ロック手段）。 WB ... Packing box, Bb ... Bottom box, Ib ... Inner box, Ob ... Outer box, Pu ... Water heater pump unit (packaged item), Ov ... Check valve (packaged item), 2 ... Bottom box sheet (One cardboard sheet) 3 ... inner box sheet, 21 ... bottom wall sheet, 22-25 ... side wall sheet, 27 ... tongue piece (locking means), 31 ... first inner plate part, 31a ... first folding line , 31c: first insertion hole (locking means), 311, 312 ... fold line constituting the first fold line, 31d ... fifth fold line, 32 ... inner bottom plate portion, 32a ... second fold line, 32c ... lead ruled line, 33 ... first 2 inside plate part, 33a ... 3rd folding line, 34 ... inner lid board part, 34a ... 4th folding line, 35 ... 3rd inside board part, 38 ... claw piece (locking means), 38a ... 6th folding line, 38b ... 1st 2 insertion holes (locking means).

Claims

被梱包物をその位置を規制した状態で支持し、被梱包物を梱包する外箱が外嵌される底箱であって、底壁シート部とその底壁シート部の各辺に夫々連設される側壁シート部とを備える一枚の段ボールシートを折り曲げて上面が開放された箱状に組み立てられると共に、被梱包物に同梱される被同梱物を収納する内箱を有するものにおいて、
段ボールシートの紙幅方向に位置する所定の側壁シート部に、紙幅方向にのびる内箱用シートが更に連設され、
内箱用シートに、所定の側壁シート部側から順に紙幅方向に間隔を存して、流れ方向に夫々のびる第１折線、第２折線、第３折線及び第４折線が設けられ、内箱用シートが、第１折線で折り曲げられて所定の側壁シート部に対向する姿勢に折り返される第１折線と第２折線との間の第１内側板部と、第２折線で第１内側板部に対して折り曲げられて底壁シート部に重なり合う第２折線と第３折線との間の内底板部と、第３折線で内底板部に対して折り曲げられて第１内側板部に対向する第３折線と第４折線との間の第２内側板部と、第４折線で第２内側板部に対して折り曲げられて内底板部に対向する第４折線より紙幅方向外側の内蓋板部とを有し、内箱の流れ方向両側の開口面を夫々覆う一対の第３内側板部が第１内側板部及び第２内側板部の少なくとも一つに、紙幅方向にのびる第５折線を介して連設され、内蓋板部の開放を防止するロック手段を設けたことを特徴とする底箱。 A bottom box that supports an object to be packed in a regulated state, and an outer box for packing the object to be packed is externally fitted to the bottom wall sheet part and each side of the bottom wall sheet part. In addition to being assembled into a box shape with the upper surface opened by folding a single corrugated cardboard sheet comprising a side wall sheet portion, and having an inner box for storing an item to be packaged to be packaged,
A sheet for an inner box extending in the paper width direction is further connected to a predetermined side wall sheet portion located in the paper width direction of the cardboard sheet,
The inner box sheet is provided with a first fold line, a second fold line, a third fold line, and a fourth fold line extending in the flow direction at intervals from the predetermined side wall sheet portion side in order. The sheet is folded at the first fold line and folded back to a posture facing the predetermined side wall sheet portion, and the first inner plate portion between the first fold line and the second fold line, and the second fold line to the first inner plate portion. An inner bottom plate portion between the second fold line and the third fold line that is bent against the bottom wall sheet portion and a third fold line that is bent with respect to the inner bottom plate portion at the third fold line and faces the first inner plate portion. A second inner plate portion between the fold line and the fourth fold line; an inner lid plate portion on the outer side in the paper width direction from the fourth fold line which is bent with respect to the second inner plate portion at the fourth fold line and faces the inner bottom plate portion; And a pair of third inner side plate portions respectively covering the opening surfaces on both sides in the flow direction of the inner box are the first inner side plate portion and the second inner side plate. At least one, the bottom box is continuously provided via a fifth fold line extending in the sheet width direction, characterized in that a locking means for preventing the opening of the inner cover plate of the.

請求項１記載の底箱であって、前記第１折線が紙幅方向に間隔を存して形成される２本の折線で構成されるものにおいて、
前記ロック手段が、第１折線の各折線間でこれら折線に沿って開設される第１挿通孔と、前記内蓋板部から紙幅方向に突出すると共に、流れ方向にのびる第６折線で内蓋板部に対して折り曲げ自在で第１挿通孔に挿入可能な爪片と、この爪片に第６折線に沿って開設される第２挿通孔と、前記所定の側壁シート部から第１挿通孔を跨いで紙幅方向にのびて第２挿通孔に挿入可能な舌片とで構成されることを特徴とする底箱。 The bottom box according to claim 1, wherein the first fold line is composed of two fold lines formed at intervals in the paper width direction.
The locking means includes a first insertion hole formed along each fold line between the first fold lines, and a sixth fold line protruding in the paper width direction from the inner lid plate portion and extending in the flow direction. A claw piece that can be bent with respect to the plate part and can be inserted into the first insertion hole, a second insertion hole that is opened along the sixth fold line in the claw piece, and a first insertion hole from the predetermined side wall sheet part A bottom box characterized by comprising a tongue piece that extends in the paper width direction and can be inserted into the second insertion hole.

前記内底板部に、前記第２折線から所定間隔を存してかつその第２折線に沿ってのびるリード罫が設けられることを特徴とする請求項１または請求項２記載の底箱。 The bottom box according to claim 1 or 2, wherein a lead ruler is provided on the inner bottom plate portion at a predetermined interval from the second folding line and extending along the second folding line.