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JP6925115B2 - Bottle - Google Patents

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Publication number
JP6925115B2
JP6925115B2 JP2016211583A JP2016211583A JP6925115B2 JP 6925115 B2 JP6925115 B2 JP 6925115B2 JP 2016211583 A JP2016211583 A JP 2016211583A JP 2016211583 A JP2016211583 A JP 2016211583A JP 6925115 B2 JP6925115 B2 JP 6925115B2
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bottle
panel
wall portion
bottom wall
radial direction
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JP2018070214A (en
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太一 浅田
太一 浅田
宏明 今井
宏明 今井
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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Description

本発明は、ボトルに関する。 The present invention relates to bottles.

従来から、ボトルの胴部に、ボトル軸方向の外側から内側に向かうに従い漸次縮径するくびれ部を有するものが知られている。
しかしながら、くびれ部を有するボトルでは、例えばボトルに密封された内容物の温度が低下してボトル内が減圧した場合等に、くびれ部が径方向に沿う横断面視で円形状から例えば楕円形状等に異変形し易いという課題があった。
Conventionally, it has been known that the body of a bottle has a constricted portion whose diameter gradually decreases from the outside to the inside in the axial direction of the bottle.
However, in a bottle having a constricted portion, for example, when the temperature of the contents sealed in the bottle drops and the inside of the bottle is depressurized, the constricted portion changes from a circular shape to an elliptical shape in a cross-sectional view along the radial direction. There was a problem that it was easily deformed.

そこで、例えば下記特許文献1には、径方向の内側に窪むパネル部がくびれ部に周方向に間隔をあけて複数配設された構成が開示されている。
この構成によれば、ボトル内が減圧した場合等に、パネル部が優先的に変形することで、ボトルのうちパネル部以外の部分での変形を抑えつつ、ボトル内の減圧を吸収するようになっている。
Therefore, for example, Patent Document 1 below discloses a configuration in which a plurality of panel portions recessed inward in the radial direction are arranged in a constricted portion at intervals in the circumferential direction.
According to this configuration, when the inside of the bottle is decompressed, the panel portion is preferentially deformed so that the decompression inside the bottle is absorbed while suppressing the deformation of the portion of the bottle other than the panel portion. It has become.

特開2012−140147号公報Japanese Unexamined Patent Publication No. 2012-140147

ところで、上述したボトルにあっては、商品名や内容物等の表示、意匠性向上の観点から、くびれ部にラベル(例えばロールラベルやシュリンクラベル等)が取り付けられることがある。
しかしながら、上述した従来の技術では、パネル部が径方向の内側に向けて窪んでいるため、ラベルがパネル部内に引き込まれる等してラベルにしわ等が発生し易く、ラベルの外観に違和感が生じるおそれがある。ラベルの外観に違和感が生じるのを抑制するために、パネル部の周方向に沿うパネル幅を縮小すると、減圧時におけるパネル部の変位量が低下し、所望の減圧吸収性能を発揮できない虞がある。
By the way, in the above-mentioned bottle, a label (for example, a roll label, a shrink label, etc.) may be attached to the constricted portion from the viewpoint of displaying the product name, the contents, and the like and improving the design.
However, in the above-mentioned conventional technique, since the panel portion is recessed inward in the radial direction, the label is likely to be wrinkled due to being pulled into the panel portion, and the appearance of the label is uncomfortable. There is a risk. If the panel width along the circumferential direction of the panel portion is reduced in order to suppress the appearance of the label from being uncomfortable, the displacement amount of the panel portion during decompression may be reduced, and the desired decompression absorption performance may not be exhibited. ..

そこで、本発明は、上述した事情に鑑みてなされたものであって、ラベルの外観に違和感が生じるのを抑制した上で、優れた減圧吸収性能を具備させることができるボトルを提供することを目的とする。 Therefore, the present invention has been made in view of the above circumstances, and provides a bottle capable of having excellent decompression absorption performance while suppressing the appearance of the label from being uncomfortable. The purpose.

上記課題を解決するために、本発明は以下の手段を提案している。
本発明に係るボトルは、筒状の胴部に、ボトル軸方向の外側から内側に向かうに従い漸次縮径するくびれ部が形成され、前記くびれ部に、径方向の内側に向けて窪むパネル部が周方向に間隔をあけて複数形成されるとともに、前記くびれ部における前記周方向で隣り合う前記パネル部同士の間が柱部とされ、前記パネル部は、前記径方向の内側に位置するとともに、ボトル軸方向の両端部から中央部に従い径方向の内側に向け、前記くびれ部に倣って湾曲するパネル底壁部と、前記パネル底壁部の外周縁から前記径方向の外側に向けて延びるパネル側壁部と、により画成され、前記パネル底壁部には、前記パネル側壁部のうち前記周方向を向く縦側壁部との間に隙間をあけて配設されるとともに前記径方向の外側に向けて突となるリブが、前記パネル底壁部における前記ボトル軸方向の全長に亘って形成され、前記リブのうち前記パネル底壁部に対して径方向の外側に位置する頂壁部は、ボトル軸方向の両端部から中央部に従い径方向の内側に向け、前記くびれ部に倣って湾曲し、前記胴部の下端開口を閉塞する底壁部を備え、前記底壁部は、前記底壁部の外周部分を構成する接地部と、前記接地部に径方向の内側に連なるとともに、上方に向けて窪む半球状の補強壁部と、前記補強壁部においてボトル軸に対して放射状に形成された底壁リブと、を備えている。
In order to solve the above problems, the present invention proposes the following means.
In the bottle according to the present invention, a constricted portion having a tubular body portion having a constricted portion whose diameter gradually decreases from the outside to the inside in the bottle axial direction is formed, and the constricted portion has a panel portion recessed inward in the radial direction. Are formed at intervals in the circumferential direction, and a pillar portion is formed between the panel portions adjacent to each other in the circumferential direction in the constricted portion, and the panel portion is located inside the radial direction. , From both ends in the bottle axial direction toward the inside in the radial direction according to the central part, the panel bottom wall portion curved in accordance with the constriction portion, and the panel bottom wall portion extending outward in the radial direction from the outer peripheral edge of the panel bottom wall portion. It is defined by the panel side wall portion, and is arranged on the panel bottom wall portion with a gap between the panel side wall portion and the vertical side wall portion facing the circumferential direction, and is arranged on the outer side in the radial direction. Ribs that project toward the panel are formed over the entire length of the panel bottom wall portion in the bottle axial direction, and the top wall portion of the ribs located on the outer side in the radial direction with respect to the panel bottom wall portion is formed. The bottom wall portion is provided with a bottom wall portion that curves in accordance with the constricted portion and closes the lower end opening of the body portion from both ends in the bottle axial direction toward the inside in the radial direction according to the central portion. A ground contact portion that constitutes the outer peripheral portion of the wall portion, a hemispherical reinforcing wall portion that is connected to the ground contact portion inward in the radial direction and is recessed upward, and the reinforcing wall portion that radiates with respect to the bottle shaft. It has a formed bottom wall rib .

この構成によれば、ボトル内が減圧すると、胴部(パネル部)が、柱部とリブとの間の隙間を周方向に狭めるように優先的に縮径変形することになる。そのため、胴部に優れた減圧吸収性能を具備させることができる。
しかも、パネル底壁部に径方向の外側に向けて突出するリブを配設したため、パネル部を覆うように胴部に取り付けられるラベルを、径方向の内側から支持することができる。そのため、ラベル装着時において、胴部を覆うラベルが径方向の内側へ移動するのを規制して、ラベルの平滑状態を維持できる。これにより、ラベルが隙間の内側に引き込まれてしわが発生するのを抑制して、ラベルの外観に違和感が生じるのを抑制できる。
さらに、リブがパネル底壁部におけるボトル軸方向の全長に亘って形成されているので、径方向から見た側面視でリブと重なる部分では、ラベルをボトル軸方向の全体に亘って支持できる。これにより、ラベルにしわが発生するのを確実に抑制できる。
そして、リブ及び柱部によって胴部におけるラベルの支持面積を確保できるので、ラベルの外観に違和感が生じるのを確実に抑制できる。
According to this configuration, when the pressure inside the bottle is reduced, the body portion (panel portion) is preferentially reduced in diameter so as to narrow the gap between the pillar portion and the rib in the circumferential direction. Therefore, the body portion can be provided with excellent decompression absorption performance.
Moreover, since the ribs protruding outward in the radial direction are provided on the bottom wall portion of the panel, the label attached to the body portion so as to cover the panel portion can be supported from the inside in the radial direction. Therefore, when the label is attached, the label covering the body portion can be restricted from moving inward in the radial direction, and the smooth state of the label can be maintained. As a result, it is possible to prevent the label from being drawn into the gap and causing wrinkles, and to prevent the appearance of the label from becoming uncomfortable.
Further, since the ribs are formed over the entire length of the bottom wall of the panel in the bottle axial direction, the label can be supported over the entire length of the bottle axial direction at the portion overlapping the ribs in the side view from the radial direction. As a result, it is possible to reliably suppress the occurrence of wrinkles on the label.
Further, since the support area of the label in the body portion can be secured by the ribs and the pillar portions, it is possible to surely suppress the appearance of the label from being uncomfortable.

本発明に係るボトルにおいて、前記ボトル軸方向における前記パネル部の長さは、前記ボトル軸方向における前記くびれ部の長さに対して20%以上95%以下になっていてもよい。
この構成によれば、くびれ部の最小外径に跨るようにパネル部が形成され易くなるので、くびれ部の変形を抑制できる。
In the bottle according to the present invention, the length of the panel portion in the bottle axial direction may be 20% or more and 95% or less with respect to the length of the constricted portion in the bottle axial direction.
According to this configuration, the panel portion is easily formed so as to straddle the minimum outer diameter of the constricted portion, so that the deformation of the constricted portion can be suppressed.

本発明に係るボトルにおいて、前記くびれ部の最小外径は、前記くびれ部の最大外径に対して60%以上98%以下になっていてもよい。
この構成によれば、ボトル内の減圧化に伴いボトルに作用する径方向の内側へ凹む応力が、くびれ部に集中し易くなる。そのため、上述したようにくびれ部へパネル部を配置することによって胴部の異変形を抑制できる。また、くびれ部の最小外径をくびれ部の最大外径(最大胴径)の60%以上とすることで、ボトル内の減圧に対してくびれ部が可動する程度の適度な剛性をボトルに賦与することができる。
In the bottle according to the present invention, the minimum outer diameter of the constricted portion may be 60% or more and 98% or less with respect to the maximum outer diameter of the constricted portion.
According to this configuration, the stress acting on the bottle inward in the radial direction due to the decompression in the bottle tends to be concentrated on the constricted portion. Therefore, by arranging the panel portion in the constricted portion as described above, it is possible to suppress the abnormal deformation of the body portion. In addition, by setting the minimum outer diameter of the constricted part to 60% or more of the maximum outer diameter (maximum body diameter) of the constricted part, the bottle is given appropriate rigidity to the extent that the constricted part can move with respect to the decompression in the bottle. can do.

本発明に係るボトルにおいて、前記くびれ部における前記ボトル軸方向の長さは、前記胴部における前記ボトル軸方向の長さに対して30%以上90%以下になっていてもよい。
この構成によれば、充填温度等によるボトル内の減圧の程度に応じ、所望する体積変化量をボトルに賦与することができる。
In the bottle according to the present invention, the length of the constricted portion in the bottle axial direction may be 30% or more and 90% or less with respect to the length of the body portion in the bottle axial direction.
According to this configuration, a desired volume change amount can be imparted to the bottle according to the degree of decompression in the bottle due to the filling temperature or the like.

本発明に係るボトルによれば、ラベルの外観に違和感が生じるのを抑制した上で、優れた減圧吸収性能を具備させることができる。 According to the bottle according to the present invention, it is possible to provide excellent decompression absorption performance while suppressing the appearance of the label from being uncomfortable.

実施形態に係るボトルの側面図である。It is a side view of the bottle which concerns on embodiment. 実施形態に係るボトルの底面図である。It is a bottom view of the bottle which concerns on embodiment. 図1のIII−III線に沿う部分断面図である。It is a partial cross-sectional view along the line III-III of FIG.

以下、図面を参照し、本発明の実施形態を説明する。
図1に示すように、本実施形態に係るボトル1は、合成樹脂材料により有底筒状に形成されている。ボトル1は、射出成形により有底筒状に形成されたプリフォームが、ブロー成形されることで形成される。なお、合成樹脂材料としては、例えばポリエチレンテレフタレート等が挙げられる。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the bottle 1 according to the present embodiment is formed of a synthetic resin material into a bottomed tubular shape. The bottle 1 is formed by blow molding a preform formed into a bottomed tubular shape by injection molding. Examples of the synthetic resin material include polyethylene terephthalate and the like.

ボトル1は、口部11、肩部12、胴部13及び底部14が、それぞれの中心軸線を共通軸上に位置させた状態で、この順に連設されて構成されている。以下、上述した共通軸をボトル軸Oといい、ボトル軸O方向に沿って口部11側を上側、底部14側を下側といい、また、ボトル軸O方向から見た平面視でボトル軸Oに直交する方向を径方向といい、ボトル軸O回りに周回する方向を周方向という。この場合、口部11、肩部12、胴部13及び底部14は、それぞれ径方向に沿う横断面視形状が円形状となっている。 The bottle 1 is configured such that the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 are continuously provided in this order with their respective central axes positioned on a common axis. Hereinafter, the above-mentioned common axis is referred to as a bottle shaft O, the mouth 11 side is referred to as an upper side and the bottom 14 side is referred to as a lower side along the bottle shaft O direction, and the bottle shaft is viewed in a plan view from the bottle shaft O direction. The direction orthogonal to O is called the radial direction, and the direction that orbits around the bottle axis O is called the circumferential direction. In this case, the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 each have a circular cross-sectional view along the radial direction.

口部11は、筒状に形成されている。口部11には、図示しないキャップが装着される。
肩部12は、口部11の下端縁に連なっている。肩部12は、上肩部12a及び下肩部12bが上方から下方に連なって構成されている。
上肩部12aは、径方向の外側に向けて湾曲するとともに、下方に向かうに従い漸次拡径するテーパ状に形成されている。
下肩部12bは、ボトル軸O方向の全体に亘って外径が一様に形成されている。
The mouth portion 11 is formed in a tubular shape. A cap (not shown) is attached to the mouth portion 11.
The shoulder portion 12 is connected to the lower end edge of the mouth portion 11. The shoulder portion 12 is formed by connecting the upper shoulder portion 12a and the lower shoulder portion 12b from above to below.
The upper shoulder portion 12a is formed in a tapered shape that is curved outward in the radial direction and gradually increases in diameter toward the lower side.
The outer diameter of the lower shoulder portion 12b is uniformly formed over the entire area in the bottle axis O direction.

底部14は、有底筒状に形成されている。底部14は、胴部13の下端縁に接続された筒状のヒール部14aと、ヒール部14aの下端開口を閉塞する底壁部14bと、を備えている。
底壁部14bは、底壁部14bの外周部分を構成する環状の接地部21と、接地部21における径方向の内側に連なる補強壁部22と、を備えている。
The bottom portion 14 is formed in a bottomed tubular shape. The bottom portion 14 includes a tubular heel portion 14a connected to the lower end edge of the body portion 13 and a bottom wall portion 14b that closes the lower end opening of the heel portion 14a.
The bottom wall portion 14b includes an annular ground contact portion 21 that constitutes an outer peripheral portion of the bottom wall portion 14b, and a reinforcing wall portion 22 that is connected to the inside of the ground contact portion 21 in the radial direction.

図1、図2に示すように、接地部21は、ヒール部14aの下端縁に連なっている。接地部21の下面は、ボトル軸O方向に直交する平坦面とされている。
補強壁部22は、上方に向けて窪む半球状(ドーム状)に形成されている。補強壁部22の外周縁は、接地部21の内周縁に接続されている。補強壁部22には、下方に膨出する底壁リブ23が形成されている。底壁リブ23は、平面視において、ボトル軸Oに対して放射状に配置されている。なお、補強壁部22及び底壁リブ23の肉厚は、接地部21の肉厚よりも厚くなっている。
As shown in FIGS. 1 and 2, the ground contact portion 21 is connected to the lower end edge of the heel portion 14a. The lower surface of the ground contact portion 21 is a flat surface orthogonal to the bottle axis O direction.
The reinforcing wall portion 22 is formed in a hemispherical shape (dome shape) that is recessed upward. The outer peripheral edge of the reinforcing wall portion 22 is connected to the inner peripheral edge of the ground contact portion 21. The reinforcing wall portion 22 is formed with a bottom wall rib 23 that bulges downward. The bottom wall ribs 23 are arranged radially with respect to the bottle shaft O in a plan view. The wall thickness of the reinforcing wall portion 22 and the bottom wall rib 23 is thicker than that of the ground contact portion 21.

図1に示すように、胴部13は、上胴部(くびれ部)13a及び下胴部13bが上方から下方に連なって構成されている。
上胴部13aは、下肩部12bの下端縁から下方に延設されている。上胴部13aと下肩部12bとの境界部分には、径方向の内側に窪むとともに、周方向の全周に亘って延びる第1周溝25が形成されている。なお、第1周溝25は、周方向に沿って直線状に形成されている。
As shown in FIG. 1, the body portion 13 is composed of an upper body portion (necked portion) 13a and a lower body portion 13b connected from above to below.
The upper body portion 13a extends downward from the lower end edge of the lower shoulder portion 12b. At the boundary between the upper body portion 13a and the lower shoulder portion 12b, a first circumferential groove 25 is formed which is recessed inward in the radial direction and extends over the entire circumference in the circumferential direction. The first peripheral groove 25 is formed linearly along the circumferential direction.

下胴部13bは、上胴部13aの下端縁とヒール部14aの上端縁との間を接続している。下胴部13bの外径は、ボトル軸O方向の全体に亘って一様に形成されている。上胴部13aと下胴部13bとの境界部分には、径方向の内側に窪むとともに、周方向の全周に亘って延びる第2周溝26が形成されている。また、下胴部13bとヒール部14aとの境界部分には、径方向の内側に窪むとともに、周方向の全周に亘って延びる第3周溝27が形成されている。なお、第2周溝26及び第3周溝27は、周方向に沿って直線状に形成されている。 The lower body portion 13b connects between the lower end edge of the upper body portion 13a and the upper end edge of the heel portion 14a. The outer diameter of the lower body portion 13b is uniformly formed over the entire area in the bottle axis O direction. At the boundary between the upper body portion 13a and the lower body portion 13b, a second peripheral groove 26 is formed which is recessed inward in the radial direction and extends over the entire circumference in the circumferential direction. Further, at the boundary portion between the lower body portion 13b and the heel portion 14a, a third peripheral groove 27 is formed which is recessed inward in the radial direction and extends over the entire circumference in the circumferential direction. The second peripheral groove 26 and the third peripheral groove 27 are formed linearly along the circumferential direction.

下胴部13bには、径方向の内側に窪むとともに、周方向の全周に亘って延びる下胴周溝31が形成されている。上述した下胴周溝31は、ボトル軸O方向に間隔をあけて複数(例えば、2つ)形成されている。 The lower body portion 13b is formed with a lower body peripheral groove 31 that is recessed inward in the radial direction and extends over the entire circumference in the circumferential direction. A plurality (for example, two) of the lower trunk peripheral grooves 31 described above are formed at intervals in the bottle axis O direction.

ここで、上胴部13aは、ボトル軸O方向の両端部からボトル軸O方向の中央部に向かうに従い漸次縮径するくびれ部を構成している。本実施形態において、上胴部13aの最小外径は、上胴部13aの最大外径に対して60%以上98%以下になっていることが好ましい(より好ましくは87%以上93%以下)。また、上胴部13aにおけるボトル軸O方向の長さは、胴部13全体におけるボトル軸O方向の長さに対して30%以上90%以下になっていることが好ましい(より好ましくは63%以上68%以下)。なお、本実施形態では、上胴部13aの最小外径部分が、上胴部13aにおけるボトル軸O方向の中心に位置しているが、この構成のみに限らず、上胴部13aにおけるボトル軸O方向の中心に対してボトル軸O方向にずれていても構わない。 Here, the upper body portion 13a constitutes a constricted portion whose diameter gradually decreases toward the central portion in the bottle axis O direction from both ends in the bottle axis O direction. In the present embodiment, the minimum outer diameter of the upper body portion 13a is preferably 60% or more and 98% or less with respect to the maximum outer diameter of the upper body portion 13a (more preferably 87% or more and 93% or less). .. Further, the length of the upper body portion 13a in the bottle shaft O direction is preferably 30% or more and 90% or less (more preferably 63%) with respect to the length of the entire body portion 13 in the bottle shaft O direction. More than 68% or less). In the present embodiment, the minimum outer diameter portion of the upper body portion 13a is located at the center of the upper body portion 13a in the bottle axis O direction, but the present invention is not limited to this configuration, and the bottle shaft in the upper body portion 13a is not limited to this configuration. The bottle axis may be deviated in the O direction with respect to the center in the O direction.

上胴部13aには、径方向の内側に向けて窪む減圧吸収用のパネル部41が周方向に間隔をあけて複数(図示の例では、等間隔に6つ)形成されている。そして、上胴部13aにおいて、周方向で隣り合うパネル部41同士の間に位置する部分は、ボトル軸O方向に沿って延びる柱部42を構成している。すなわち、上胴部13aには、パネル部41と柱部42とが周方向に交互に配設されている。 A plurality of panel portions 41 for absorbing decompression, which are recessed inward in the radial direction, are formed on the upper body portion 13a at intervals in the circumferential direction (six at equal intervals in the illustrated example). A portion of the upper body portion 13a located between the panel portions 41 adjacent to each other in the circumferential direction constitutes a pillar portion 42 extending along the bottle axis O direction. That is, on the upper body portion 13a, panel portions 41 and pillar portions 42 are alternately arranged in the circumferential direction.

パネル部41は、上胴部13aを径方向から見た側面視でボトル軸O方向を長手方向とした長方形状とされている。具体的に、各パネル部41は、上胴部13aにおけるボトル軸O方向の両端部以外の領域に、上述した第1周溝25及び第2周溝26に対してボトル軸O方向に離間した状態で形成されている。本実施形態において、ボトル軸O方向におけるパネル部41の長さは、ボトル軸O方向における上胴部13aの長さに対して20%以上95%以下になっていることが好ましい(より好ましくは87%以上93%以下)。なお、本実施形態において、パネル部41におけるボトル軸O方向の中心は、上胴部13aにおけるボトル軸O方向の中心に一致している。但し、パネル部41のボトル軸O方向の中心が、上胴部13aのボトル軸O方向の中心に対してボトル軸O方向にずれていても構わない。 The panel portion 41 has a rectangular shape with the bottle axis O direction as the longitudinal direction when the upper body portion 13a is viewed from the radial direction. Specifically, each panel portion 41 is separated from the above-mentioned first peripheral groove 25 and the second peripheral groove 26 in the bottle axis O direction in a region other than both ends in the bottle axis O direction in the upper body portion 13a. It is formed in a state. In the present embodiment, the length of the panel portion 41 in the bottle shaft O direction is preferably 20% or more and 95% or less (more preferably) with respect to the length of the upper body portion 13a in the bottle shaft O direction. 87% or more and 93% or less). In the present embodiment, the center of the panel portion 41 in the bottle axis O direction coincides with the center of the upper body portion 13a in the bottle axis O direction. However, the center of the panel portion 41 in the bottle axis O direction may be deviated in the bottle axis O direction with respect to the center of the upper body portion 13a in the bottle axis O direction.

図1、図3に示すように、各パネル部41は、上胴部13aの外周面に対して径方向の内側に位置するパネル底壁部43と、パネル底壁部43の外周縁から径方向の外側に向けて延びるパネル側壁部44と、により画成されている。
パネル底壁部43は、ボトル軸O方向に沿う縦断面視において、上胴部13aの外周面に倣って延在している。すなわち、パネル底壁部43は、ボトル軸O方向に沿う縦断面視において、ボトル軸O方向の両端部からボトル軸O方向の中央部に向かうに従い径方向の内側に向けて湾曲している。なお、パネル底壁部43は、ボトル軸O方向に延びる平坦面であっても構わない。
As shown in FIGS. 1 and 3, each panel portion 41 has a diameter from the outer peripheral edge of the panel bottom wall portion 43 and the panel bottom wall portion 43 located inside in the radial direction with respect to the outer peripheral surface of the upper body portion 13a. It is defined by a panel side wall portion 44 extending outward in the direction.
The panel bottom wall portion 43 extends along the outer peripheral surface of the upper body portion 13a in a vertical cross-sectional view along the bottle axis O direction. That is, the panel bottom wall portion 43 is curved inward in the radial direction from both ends in the bottle axis O direction toward the central portion in the bottle axis O direction in a vertical cross-sectional view along the bottle axis O direction. The panel bottom wall portion 43 may be a flat surface extending in the bottle axis O direction.

図3に示すように、パネル底壁部43は、径方向に沿う横断面視において、パネル部41の周方向の外側から内側に向かうに従い径方向の内側に向けて傾斜している。なお、パネル底壁部43は、径方向に沿う横断面視において、上胴部13aの外周面に倣って延在していてもよく、周方向の外側から内側に向かうに従い径方向の外側に向けて傾斜していても構わない。 As shown in FIG. 3, the panel bottom wall portion 43 is inclined toward the inside in the radial direction from the outside in the circumferential direction to the inside of the panel portion 41 in a cross-sectional view along the radial direction. The panel bottom wall portion 43 may extend along the outer peripheral surface of the upper body portion 13a in a cross-sectional view along the radial direction, and may extend from the outer side in the circumferential direction to the outer side in the radial direction from the outer side to the inner side. It does not matter if it is tilted toward it.

パネル側壁部44のうち、パネル底壁部43における周方向の両端に連なりボトル軸O方向に延びる一対の縦側壁部44aは、径方向の内側から外側に向かうに従い周方向の外側(各縦側壁部44aが離間する方向)に傾斜している。そして、周方向で隣り合うパネル部41の縦側壁部44a同士の間に位置する柱部42は、径方向に沿う横断面視形状が矩形状又は台形状となるように形成されている。また、柱部42における径方向の外側に位置する柱頂部42aは、径方向に沿う横断面視において、径方向の外側に向けて突の曲面状に形成されている。
図1に示すように、パネル側壁部44のうち、ボトル軸O方向の両端に位置して周方向に延びる一対の横側壁部44bは、径方向の内側から外側に向かうに従いボトル軸O方向の外側に向けて傾斜している。
Of the panel side wall portions 44, a pair of vertical side wall portions 44a connected to both ends in the circumferential direction of the panel bottom wall portion 43 and extending in the bottle axis O direction are outward in the circumferential direction (each vertical side wall portion) from the inside in the radial direction to the outside. It is inclined in the direction in which the portions 44a are separated from each other). The pillar portion 42 located between the vertical side wall portions 44a of the panel portions 41 adjacent to each other in the circumferential direction is formed so that the cross-sectional view shape along the radial direction is rectangular or trapezoidal. Further, the pillar top portion 42a located on the outer side of the pillar portion 42 in the radial direction is formed in a curved surface shape of a protrusion toward the outer side in the radial direction in a cross-sectional view along the radial direction.
As shown in FIG. 1, of the panel side wall portions 44, the pair of lateral side wall portions 44b located at both ends in the bottle axis O direction and extending in the circumferential direction are in the bottle axis O direction from the inside to the outside in the radial direction. It is inclined toward the outside.

図1、図3に示すように、パネル底壁部43における周方向の中央部には、径方向の外側に向けて突出するリブ45が形成されている。リブ45は、同一のパネル部41を構成する縦側壁部44a同士の間に、縦側壁部44aに対して周方向に隙間46をあけて配設されるとともに、パネル底壁部43におけるボトル軸O方向の全長に亘って形成されている。したがって、本実施形態のパネル部41は、周方向の中央部において、ボトル軸O方向で互いに対向する一対の横側壁部44b同士がリブ45によって架け渡されている。本実施形態では、柱部42及びリブ45(以下、まとめて「縦リブ」という場合がある。)が周方向に交互に6本ずつ(合計12本)配設されている。なお、縦リブは、8本〜16本であることが好ましく、10本〜12本であることがより好ましい。 As shown in FIGS. 1 and 3, ribs 45 projecting outward in the radial direction are formed in the central portion of the panel bottom wall portion 43 in the circumferential direction. The ribs 45 are arranged between the vertical side wall portions 44a constituting the same panel portion 41 with a gap 46 in the circumferential direction with respect to the vertical side wall portion 44a, and the bottle shaft in the panel bottom wall portion 43. It is formed over the entire length in the O direction. Therefore, in the panel portion 41 of the present embodiment, a pair of lateral side wall portions 44b facing each other in the bottle axis O direction are bridged by ribs 45 at the central portion in the circumferential direction. In the present embodiment, six pillars 42 and 45 ribs (hereinafter, may be collectively referred to as “vertical ribs”) are arranged alternately in the circumferential direction (12 in total). The number of vertical ribs is preferably 8 to 16, and more preferably 10 to 12.

リブ45は、パネル底壁部43に対して径方向の外側に位置する頂壁部45aと、頂壁部45aにおける周方向の両端とパネル底壁部43とを各別に連結する一対の周端壁部45bと、により画成されている。 The rib 45 is a pair of peripheral end wall portions that separately connect the top wall portion 45a located on the outer side in the radial direction with respect to the panel bottom wall portion 43, both ends in the circumferential direction of the top wall portion 45a, and the panel bottom wall portion 43. It is defined by 45b.

図1に示すように、頂壁部45aは、ボトル軸O方向に沿う縦断面視において、上胴部13aの外周面に倣って延在している。すなわち、頂壁部45aは、ボトル軸O方向の両端部からボトル軸O方向の中央部に向かうに従い径方向の内側に湾曲している。なお、頂壁部45aは、柱頂部42aに対して径方向の内側又は外側に位置していても構わない。 As shown in FIG. 1, the top wall portion 45a extends along the outer peripheral surface of the upper body portion 13a in a vertical cross-sectional view along the bottle axis O direction. That is, the top wall portion 45a is curved inward in the radial direction from both ends in the bottle axis O direction toward the central portion in the bottle axis O direction. The top wall portion 45a may be located inside or outside the column top portion 42a in the radial direction.

図3に示すように、頂壁部45aは、径方向に沿う横断面視において、径方向の外側に向けて突の曲面状に形成されている。頂壁部45aは、各柱頂部42aの表面形状(上胴部13aの表面形状)に倣って周方向に延びる仮想円L上に位置している。仮想円Lの接線方向において、頂壁部45aの幅(リブ幅D1)は、柱頂部42aの幅(柱幅D2)以上になっている。また、リブ幅D1及び柱幅D2は、仮想線Lの接線方向における隙間46の幅(開口幅D3)以上になっている(すなわち、D1>D2>D3)。但し、リブ幅D1、柱幅D2及び開口幅D3は、適宜変更が可能である。 As shown in FIG. 3, the top wall portion 45a is formed in a curved surface shape that protrudes outward in the radial direction in a cross-sectional view along the radial direction. The top wall portion 45a is located on a virtual circle L extending in the circumferential direction following the surface shape of each pillar top portion 42a (the surface shape of the upper body portion 13a). In the tangential direction of the virtual circle L, the width of the top wall portion 45a (rib width D1) is equal to or larger than the width of the pillar top portion 42a (column width D2). Further, the rib width D1 and the column width D2 are equal to or larger than the width of the gap 46 (opening width D3) in the tangential direction of the virtual line L (that is, D1> D2> D3). However, the rib width D1, the column width D2, and the opening width D3 can be changed as appropriate.

周端壁部45bは、頂壁部45aの周方向の両端に位置してボトル軸O方向に延び、径方向の外側から内側に向かうに従い周方向の外側に向けて傾斜している。したがって、リブ45は、径方向に沿う横断面視において、径方向の外側から内側に向かうに従い周方向の幅が漸次拡大する台形状に形成されている。そして、パネル部41において、リブ45の周端壁部45bと、パネル部41のパネル底壁部43、縦側壁部44a、横側壁部44bと、で画成された部分が、ボトル軸O方向に沿って延びる上述した隙間46になっている。 The peripheral end wall portions 45b are located at both ends of the top wall portion 45a in the circumferential direction, extend in the bottle axis O direction, and are inclined toward the outer side in the circumferential direction from the outer side in the radial direction to the inner side. Therefore, the rib 45 is formed in a trapezoidal shape in which the width in the circumferential direction gradually increases from the outside to the inside in the radial direction in a cross-sectional view along the radial direction. Then, in the panel portion 41, the portion defined by the peripheral end wall portion 45b of the rib 45, the panel bottom wall portion 43 of the panel portion 41, the vertical side wall portion 44a, and the lateral side wall portion 44b is along the bottle axis O direction. It is the above-mentioned gap 46 that extends.

図1に示すように、本実施形態の各リブ45は、上述した底壁リブ23と周方向の位置が同等になっている。但し、各リブ45及び底壁リブ23の周方向位置は、適宜変更が可能である。 As shown in FIG. 1, each rib 45 of the present embodiment has the same position in the circumferential direction as the bottom wall rib 23 described above. However, the circumferential positions of the ribs 45 and the bottom wall ribs 23 can be changed as appropriate.

図3に示すように、本実施形態の柱部42及びリブ45は、それぞれ周方向の中心を通り径方向に延びる中心線に対して線対称になっている。すなわち、同一のリブ45を構成する一対の周端壁部45bにおける径方向の内端それぞれの径方向に沿う位置が互いに同等とされ、同一の柱部42を構成する一対の縦側壁部44aにおける径方向の内端それぞれの径方向に沿う位置が互いに同等とされている。また、縦側壁部44aにおける径方向の内端、及び周端壁部45bにおける径方向の内端の径方向の位置は、互いに異なっている。具体的に、図示の例では、縦側壁部44aにおける径方向の長さ(深さH1)は、周端壁部45bにおける径方向の長さ(深さH2)に比べて短くなっている(H1<H2)。したがって、同一のパネル部41において、周方向で互いに対向する縦側壁部44a及び周端壁部45bのうち、縦側壁部44aは周端壁部45bよりも径方向の長さが短くなっている。但し、縦側壁部44a及び周端壁部45bの径方向の長さは、適宜変更が可能である。 As shown in FIG. 3, the pillar portion 42 and the rib 45 of the present embodiment are line-symmetrical with respect to the center line extending in the radial direction through the center in the circumferential direction, respectively. That is, the positions along the radial inner ends of the pair of peripheral wall portions 45b forming the same rib 45 are equal to each other, and the radial directions of the pair of vertical side wall portions 44a forming the same pillar portion 42 are equal to each other. The positions along the radial direction of each of the inner ends of the above are equal to each other. Further, the radial inner end of the vertical side wall portion 44a and the radial inner end of the peripheral end wall portion 45b are different from each other. Specifically, in the illustrated example, the radial length (depth H1) of the vertical side wall portion 44a is shorter than the radial length (depth H2) of the peripheral end wall portion 45b (H1 <. H2). Therefore, in the same panel portion 41, of the vertical side wall portions 44a and the peripheral end wall portions 45b facing each other in the circumferential direction, the vertical side wall portion 44a has a shorter radial length than the peripheral end wall portion 45b. However, the radial lengths of the vertical side wall portion 44a and the peripheral end wall portion 45b can be appropriately changed.

なお、本実施形態のボトル1では、少なくとも上胴部13aを覆うようにラベル(例えば、シュリンクラベルやロールラベル等)が貼着される。 In the bottle 1 of the present embodiment, a label (for example, a shrink label, a roll label, etc.) is attached so as to cover at least the upper body portion 13a.

したがって、本実施形態では、ボトル1内が減圧すると、上胴部13a(パネル部41)が、柱部42とリブ45との間の隙間46を周方向に狭めるように優先的に縮径変形することになる。そのため、上胴部13aに減圧吸収性能を具備させることができる。
また、本実施形態では、縦側壁部44aにおける径方向の内端、及び周端壁部45bにおける径方向の内端の径方向に沿う位置が互いに異なっているため、パネル部41が変形し易くなり、減圧吸収性能を確実に具備させることができる。
Therefore, in the present embodiment, when the inside of the bottle 1 is depressurized, the upper body portion 13a (panel portion 41) is preferentially reduced in diameter so as to narrow the gap 46 between the pillar portion 42 and the rib 45 in the circumferential direction. Will be done. Therefore, the upper body portion 13a can be provided with the reduced pressure absorption performance.
Further, in the present embodiment, since the positions of the radial inner end of the vertical side wall portion 44a and the radial inner end of the peripheral end wall portion 45b along the radial direction are different from each other, the panel portion 41 is easily deformed. Decompression absorption performance can be reliably provided.

しかも、本実施形態では、パネル底壁部43に径方向の外側に向けて突出するリブ45を配設したため、パネル部41を覆うように上胴部13aに取り付けられるラベルを、径方向の内側から支持することができる。そのため、ラベル装着時において、上胴部13aを覆うラベルが径方向の内側へ移動するのを規制して、ラベルの平滑状態を維持できる。これにより、ラベルが隙間46の内側に引き込まれてしわが発生するのを抑制して、ラベルの外観に違和感が生じるのを抑制できる。
さらに、リブ45がパネル底壁部43におけるボトル軸O方向の全長に亘って形成されているので、径方向から見た側面視でリブ45と重なる部分では、ラベルをボトル軸O方向の全体に亘って支持できる。これにより、ラベルにしわが発生するのを確実に抑制できる。
そして、リブ45及び柱部42によって上胴部13aにおけるラベルの支持面積を確保できるので、ラベルの外観に違和感が生じるのを確実に抑制できる。
Moreover, in the present embodiment, since the rib 45 projecting outward in the radial direction is provided on the bottom wall portion 43 of the panel, the label attached to the upper body portion 13a so as to cover the panel portion 41 is placed inside in the radial direction. Can be supported from. Therefore, when the label is attached, the label covering the upper body portion 13a can be restricted from moving inward in the radial direction, and the smooth state of the label can be maintained. As a result, it is possible to prevent the label from being drawn into the gap 46 and causing wrinkles, and to prevent the appearance of the label from becoming uncomfortable.
Further, since the rib 45 is formed over the entire length of the panel bottom wall portion 43 in the bottle axis O direction, the label is spread over the entire length of the panel bottom wall portion 43 in the bottle axis O direction at the portion overlapping the rib 45 in the side view from the radial direction. Can be supported throughout. As a result, it is possible to reliably suppress the occurrence of wrinkles on the label.
Since the rib 45 and the pillar portion 42 can secure the support area of the label on the upper body portion 13a, it is possible to surely suppress the appearance of the label from being uncomfortable.

ここで、本実施形態では、上胴部13aがボトル軸O方向の両端部から中央部に向かうに従い漸次縮径しているため、上胴部13aの剛性を高めることができる。そのため、ボトル製造時に、胴部13において、肉厚が局所的に異なる部分(以下、「偏肉部」という。)が仮に形成された場合であっても、ボトル1内の減圧時に偏肉部を起点にして胴部13が異変形するのを抑制できる。そして、本実施形態では、上胴部13aにパネル部41を配設することで、胴部13自体(柱部42やリブ45)の径方向の変形を抑制した上で、上述したように各パネル部41を柔軟に変形させて上胴部13aを全周に亘って均等に縮径変形させることができる。その結果、パネル部41が適正に変形する前に、胴部13全体が異変形するのを抑制でき、パネル部41の減圧吸収性能を効果的に発揮させることができる。また、胴部13全体が異変形するのを抑制できるので、ラベルにしわ等が発生するのを抑制し、ラベルの外観に違和感が生じるのを抑制できる。 Here, in the present embodiment, since the upper body portion 13a is gradually reduced in diameter from both ends in the bottle axis O direction toward the center portion, the rigidity of the upper body portion 13a can be increased. Therefore, even if a portion having a locally different wall thickness (hereinafter referred to as “unbalanced thickness portion”) is formed in the body portion 13 during bottle manufacturing, the unbalanced thickness portion is formed when the pressure in the bottle 1 is reduced. It is possible to prevent the body portion 13 from being deformed abnormally starting from. Then, in the present embodiment, by disposing the panel portion 41 on the upper body portion 13a, the body portion 13 itself (pillar portion 42 and rib 45) is suppressed from being deformed in the radial direction, and as described above, each of them is described. The panel portion 41 can be flexibly deformed to uniformly reduce the diameter of the upper body portion 13a over the entire circumference. As a result, it is possible to prevent the entire body portion 13 from being deformed differently before the panel portion 41 is properly deformed, and the decompression absorption performance of the panel portion 41 can be effectively exhibited. Further, since it is possible to suppress the entire body portion 13 from being deformed abnormally, it is possible to suppress the occurrence of wrinkles and the like on the label, and it is possible to suppress the appearance of the label from being uncomfortable.

本実施形態では、各パネル部41におけるボトル軸O方向の中心が、上胴部13aにおいて最も変形し易いボトル軸O方向の中心に一致しているため、各パネル部41をより柔軟に変形させることができる。そのため、上胴部13aを全周に亘って均等に縮径変形させることができる。 In the present embodiment, since the center of each panel portion 41 in the bottle axis O direction coincides with the center of the upper body portion 13a in the bottle axis O direction, which is most easily deformed, each panel portion 41 is deformed more flexibly. be able to. Therefore, the upper body portion 13a can be uniformly reduced in diameter over the entire circumference.

本実施形態では、上述したようにボトル軸O方向におけるパネル部41の長さは、ボトル軸O方向における上胴部13aの長さに対して20%以上95%以下になっていることが好ましい。
そのため、上胴部13aの最小外径に跨るようにパネル部41が形成され易くなるので、上胴部13aの変形を抑制できる。
In the present embodiment, as described above, the length of the panel portion 41 in the bottle shaft O direction is preferably 20% or more and 95% or less with respect to the length of the upper body portion 13a in the bottle shaft O direction. ..
Therefore, the panel portion 41 is likely to be formed so as to straddle the minimum outer diameter of the upper body portion 13a, so that the deformation of the upper body portion 13a can be suppressed.

本実施形態では、上述したように上胴部13aの最小外径は、上胴部13aの最大外径に対して60%以上98%以下になっていることが好ましい。
そのため、ボトル1内の減圧化に伴いボトル1に作用する径方向の内側へ凹む応力が、上胴部13aに集中し易くなる。そのため、上述したように上胴部13aへパネル部41を配置することによって胴部13の異変形を抑制できる。また、上胴部13aの最小外径を上胴部13aの最大外径(胴部13の最大外径)の60%以上とすることで、ボトル1内の減圧に対して上胴部13aが可動する程度の適度な剛性をボトル1に賦与することができる。
In the present embodiment, as described above, the minimum outer diameter of the upper body portion 13a is preferably 60% or more and 98% or less with respect to the maximum outer diameter of the upper body portion 13a.
Therefore, the stress acting on the bottle 1 inward in the radial direction due to the decompression in the bottle 1 tends to be concentrated on the upper body portion 13a. Therefore, by arranging the panel portion 41 on the upper body portion 13a as described above, it is possible to suppress the abnormal deformation of the body portion 13. Further, by setting the minimum outer diameter of the upper body portion 13a to 60% or more of the maximum outer diameter of the upper body portion 13a (maximum outer diameter of the body portion 13), the upper body portion 13a can be subjected to the decompression in the bottle 1. It is possible to impart an appropriate rigidity to the extent that the bottle 1 can move.

本実施形態では、上述したように上胴部13aにおけるボトル軸O方向の長さは、胴部13全体におけるボトル軸O方向の長さに対して30%以上90%以下になっていることが好ましい。
そのため、充填温度等によるボトル1内減圧の程度に応じ、所望する体積変化量をボトル1に賦与することができる。
In the present embodiment, as described above, the length of the upper body portion 13a in the bottle axis O direction is 30% or more and 90% or less of the length of the entire body portion 13 in the bottle axis O direction. preferable.
Therefore, a desired volume change amount can be imparted to the bottle 1 according to the degree of decompression in the bottle 1 due to the filling temperature or the like.

ここで、本願発明者は、吸引容量(ml)に対する上胴部13aの変形挙動を検証する試験を行った。本試験では、パネル部41やリブ45を有さないボトル(上胴部13aが平滑面のボトル)をサンプルボトルAとし、本実施形態のボトルをサンプルボトルBとした。本試験では、まず各サンプルボトルに40℃の内容物を充填した後、各サンプルボトルを密封した状態で室温まで冷却し、その後、サンプルボトルの上胴部13aに異変形が生じるまで内容物を1mlずつ吸引した。なお、本試験では、底壁部14b等が実質的に変形しないような構成とし、吸引時に上胴部13aのみが変形するものとして試験を行った。また、各サンプルボトルは、内容物が400ml用のものである。 Here, the inventor of the present application conducted a test for verifying the deformation behavior of the upper body portion 13a with respect to the suction capacity (ml). In this test, a bottle having no panel portion 41 or rib 45 (a bottle having a smooth upper body portion 13a) was designated as a sample bottle A, and the bottle of the present embodiment was designated as a sample bottle B. In this test, each sample bottle is first filled with the contents at 40 ° C., then each sample bottle is cooled to room temperature in a sealed state, and then the contents are filled until the upper body 13a of the sample bottle is deformed. 1 ml was aspirated. In this test, the bottom wall portion 14b and the like were configured so as not to be substantially deformed, and only the upper body portion 13a was deformed during suction. In addition, each sample bottle has a content of 400 ml.

本試験において、サンプルボトルAは、吸引容量が2mlまでは上胴部13aに異変形は生じず、良好な外観が保てた。そして、サンプルボトルAでは、吸引容量が3mlを越えた時点で上胴部13aに異変形(例えば、径方向に沿う横断面が楕円形状等)が生じる結果となった。
一方、サンプルボトルBでは、吸引容量が10mlまでは上胴部13aに異変形は生じず、良好な外観が保てた。そして、サンプルボトルBでは、吸引容量が11mlを越えた時点で上胴部13aに異変形が生じる結果となった。すなわち、サンプルボトルBでは、上胴部13a自体(柱部42やリブ45)の径方向の変形を抑制しつつ、各パネル部41を柔軟に変形させて上胴部13aを全周に亘って均等に縮径変形させることができ、優れた減圧吸収性能を得ることができた。
In this test, the sample bottle A maintained a good appearance without any abnormal deformation in the upper body portion 13a up to a suction capacity of 2 ml. Then, in the sample bottle A, when the suction capacity exceeds 3 ml, the upper body portion 13a is deformed (for example, the cross section along the radial direction is elliptical).
On the other hand, in the sample bottle B, the upper body portion 13a was not deformed up to a suction capacity of 10 ml, and a good appearance was maintained. Then, in the sample bottle B, when the suction capacity exceeds 11 ml, the upper body portion 13a is deformed. That is, in the sample bottle B, while suppressing the radial deformation of the upper body portion 13a itself (pillar portion 42 and rib 45), each panel portion 41 is flexibly deformed to cover the upper body portion 13a over the entire circumference. The diameter could be uniformly reduced and deformed, and excellent decompression absorption performance could be obtained.

以上、本発明の実施形態について図面を参照して詳述したが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等も含まれる。
例えば、上述した実施形態では、一のパネル部41に対してリブ45を一つずつ配設した場合について説明したが、この構成のみに限らず、一のパネル部41に対して複数のリブ45を配設しても構わない。
上述した実施形態では、胴部13の上胴部13aをくびれ部とした場合について説明したが、この構成のみに限らず、胴部13全体をくびれ部としても構わない。また、下胴部13bをくびれ部としても構わない。
Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like within a range not deviating from the gist of the present invention are also included.
For example, in the above-described embodiment, the case where the ribs 45 are arranged one by one with respect to one panel portion 41 has been described, but the present invention is not limited to this configuration, and a plurality of ribs 45 are provided with respect to one panel portion 41. May be arranged.
In the above-described embodiment, the case where the upper body portion 13a of the body portion 13 is used as the constricted portion has been described, but the present invention is not limited to this configuration, and the entire body portion 13 may be used as the constricted portion. Further, the lower body portion 13b may be used as a constricted portion.

上述した実施形態では、ボトル軸O方向で一列のパネル部41を周方向に間隔をあけて複数形成した場合について説明したが、この構成のみに限らず、ボトル軸O方向で複数列のパネル部を周方向に間隔をあけて複数形成しても構わない。 In the above-described embodiment, a case where a plurality of panel portions 41 in a row in the bottle axis O direction are formed at intervals in the circumferential direction has been described, but the present invention is not limited to this configuration, and the panel portions in a plurality of rows in the bottle axis O direction are not limited to this configuration. May be formed in plurality at intervals in the circumferential direction.

このように、本発明の趣旨を逸脱しない範囲で、上述した実施形態における構成要素を周知の構成要素に置き換えることは適宜可能である。 As described above, it is possible to appropriately replace the components in the above-described embodiment with well-known components without departing from the spirit of the present invention.

1…ボトル
13…胴部
13a…上胴部(くびれ部)
41…パネル部
42…柱部
43…パネル底壁部
44…パネル側壁部
45…リブ
1 ... Bottle 13 ... Body 13a ... Upper body (neck)
41 ... Panel part 42 ... Pillar part 43 ... Panel bottom wall part 44 ... Panel side wall part 45 ... Rib

Claims (4)

筒状の胴部に、ボトル軸方向の外側から内側に向かうに従い漸次縮径するくびれ部が形成され、
前記くびれ部に、径方向の内側に向けて窪むパネル部が周方向に間隔をあけて複数形成されるとともに、前記くびれ部における前記周方向で隣り合う前記パネル部同士の間が柱部とされ、
前記パネル部は、
前記径方向の内側に位置するとともに、ボトル軸方向の両端部から中央部に従い径方向の内側に向け、前記くびれ部に倣って湾曲するパネル底壁部と、
前記パネル底壁部の外周縁から前記径方向の外側に向けて延びるパネル側壁部と、により画成され、
前記パネル底壁部には、前記パネル側壁部のうち前記周方向を向く縦側壁部との間に隙間をあけて配設されるとともに前記径方向の外側に向けて突となるリブが、前記パネル底壁部における前記ボトル軸方向の全長に亘って形成され、
前記リブのうち前記パネル底壁部に対して径方向の外側に位置する頂壁部は、ボトル軸方向の両端部から中央部に従い径方向の内側に向け、前記くびれ部に倣って湾曲し
前記胴部の下端開口を閉塞する底壁部を備え、
前記底壁部は、
前記底壁部の外周部分を構成する接地部と、
前記接地部に径方向の内側に連なるとともに、上方に向けて窪む半球状の補強壁部と、
前記補強壁部においてボトル軸に対して放射状に形成された底壁リブと、を備えていることを特徴とするボトル。
A constriction is formed on the tubular body, which gradually shrinks in diameter from the outside to the inside in the direction of the bottle axis.
A plurality of panel portions recessed inward in the radial direction are formed in the constricted portion at intervals in the circumferential direction, and a pillar portion is formed between the panel portions adjacent to each other in the circumferential direction in the constricted portion. Being done
The panel part
A panel bottom wall portion that is located inside the radial direction and curves inward in the radial direction from both ends in the bottle axial direction according to the central portion and follows the constriction portion.
It is defined by a panel side wall portion extending outward in the radial direction from the outer peripheral edge of the panel bottom wall portion.
The panel bottom wall portion is provided with ribs that are arranged with a gap between the panel side wall portion and the vertical side wall portion that faces the circumferential direction and that protrudes outward in the radial direction. It is formed over the entire length of the bottom wall of the panel in the axial direction of the bottle.
Of the ribs, the top wall portion located on the outer side in the radial direction with respect to the bottom wall portion of the panel is curved inward along the central portion from both ends in the bottle axial direction in accordance with the constricted portion .
A bottom wall portion that closes the lower end opening of the body portion is provided.
The bottom wall is
A grounding portion that constitutes the outer peripheral portion of the bottom wall portion, and a grounding portion.
A hemispherical reinforcing wall portion that is connected to the grounding portion in the radial direction and is recessed upward, and a hemispherical reinforcing wall portion.
A bottle characterized by having bottom wall ribs formed radially with respect to the bottle shaft in the reinforcing wall portion.
前記ボトル軸方向における前記パネル部の長さは、前記ボトル軸方向における前記くびれ部の長さに対して20%以上95%以下になっていることを特徴とする請求項1に記載のボトル。 The bottle according to claim 1, wherein the length of the panel portion in the bottle axial direction is 20% or more and 95% or less with respect to the length of the constricted portion in the bottle axial direction. 前記くびれ部の最小外径は、前記くびれ部の最大外径に対して60%以上98%以下になっていることを特徴とする請求項1又は請求項2に記載のボトル。 The bottle according to claim 1 or 2, wherein the minimum outer diameter of the constricted portion is 60% or more and 98% or less with respect to the maximum outer diameter of the constricted portion. 前記くびれ部における前記ボトル軸方向の長さは、前記胴部における前記ボトル軸方向の長さに対して30%以上90%以下になっていることを特徴とする請求項1から請求項3の何れか1項に記載のボトル。 Claims 1 to 3, wherein the length of the constricted portion in the bottle axial direction is 30% or more and 90% or less with respect to the length of the body portion in the bottle axial direction. The bottle according to any one item.
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