JP6040013B2 - Bottle - Google Patents

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JP6040013B2
JP6040013B2 JP2012261924A JP2012261924A JP6040013B2 JP 6040013 B2 JP6040013 B2 JP 6040013B2 JP 2012261924 A JP2012261924 A JP 2012261924A JP 2012261924 A JP2012261924 A JP 2012261924A JP 6040013 B2 JP6040013 B2 JP 6040013B2
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bottle
groove
panel
portions
pair
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JP2014105026A (en
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浩通 斉藤
浩通 斉藤
小口 弘樹
弘樹 小口
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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、ボトルに関するものである。   The present invention relates to a bottle.

従来から、例えば下記特許文献1に示されるように、胴部に、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、周方向で互いに隣り合うパネル部同士の間が柱部とされ、パネル部、及び柱部が、胴部を径方向の外側から見た側面視で、ボトル軸方向、及び周方向の双方向に対して傾斜する方向に延びる矩形状を呈するボトルが知られている。
この種のボトルでは、内部の減圧時に、パネル部が径方向の内側に向けて変形するだけでなく、胴部の全体が周方向に捩じれ変形するので、高い減圧吸収容量を具備させることができる。
ところが、胴部のこのような変形に際し、胴部において、前記側面視でパネル部が呈する矩形状の鋭角部分が位置する部分、及びその周辺部分(以下、周辺部分等という)に応力が集中することで、この部分に位置する柱部のボトル軸方向の端部が屈曲変形するおそれがあった。
そこで、パネル部の外周縁部のうち、前記鋭角部分が位置する部分に、該パネル部の外周縁に沿って凹溝を形成することで、胴部の前記周辺部分等を補強した構成が知られている。
Conventionally, for example, as shown in Patent Document 1 below, a plurality of panel portions that are recessed inward in the radial direction are formed in the body portion at intervals in the circumferential direction, and panels that are adjacent to each other in the circumferential direction. Between the parts is a pillar part, and the panel part and the pillar part extend in a direction inclined with respect to both the bottle axial direction and the circumferential direction in a side view when the body part is viewed from the outside in the radial direction. A bottle having a rectangular shape is known.
In this type of bottle, not only the panel part is deformed toward the inner side in the radial direction but also the whole body part is twisted and deformed in the circumferential direction at the time of internal decompression, so that a high decompression absorption capacity can be provided. .
However, in the case of such deformation of the body portion, stress concentrates on the portion where the rectangular acute angle portion that the panel portion exhibits in the side view is located and its peripheral portion (hereinafter referred to as the peripheral portion). As a result, there is a possibility that the end of the column portion located in this portion in the bottle axial direction is bent and deformed.
Therefore, a configuration in which the peripheral portion of the body portion is reinforced by forming a concave groove along the outer peripheral edge of the panel portion in a portion where the acute angle portion is located in the outer peripheral portion of the panel portion is known. It has been.

特許第4978907号公報Japanese Patent No. 4978907

しかしながら、前記従来のボトルでは、胴部の前記周辺部分等を補強した分、減圧吸収容量が低下するおそれがあった。
また本願発明者等は、鋭意検討した結果、胴部において、前記側面視でパネル部が呈する矩形状の2つの鋭角部分のうち、特に、ボトル軸方向に沿う底部側の下鋭角部分が位置する部分、及びその周辺部分に応力が集中し、この部分に位置する柱部の下端部が屈曲変形しやすくなることを見出した。
However, in the conventional bottle, the vacuum absorption capacity may be reduced by the amount of reinforcement of the peripheral portion of the body portion.
Further, as a result of intensive studies, the inventors of the present application have located the lower acute angle portion on the bottom side along the bottle axis direction, among the two acute angle portions of the rectangular shape that the panel portion exhibits in the side view. It has been found that stress concentrates on the part and its peripheral part, and the lower end part of the column part located at this part is easily bent and deformed.

本発明はこのような事情を考慮してなされたもので、その目的は、減圧吸収容量の低下を防ぎつつ、柱部の下端部が屈曲変形するのを抑制することができるボトルを提供することである。   The present invention has been made in view of such circumstances, and an object thereof is to provide a bottle that can prevent the lower end portion of the column portion from being bent and deformed while preventing a decrease in the vacuum absorption capacity. It is.

上記課題を解決して、このような目的を達成するために、本発明のボトルは、合成樹脂材料で有底筒状に形成されたボトルであって、胴部に、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、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、及び前記柱部は、前記胴部を径方向の外側から見た側面視で、ボトル軸方向に対して傾斜する方向に延びる矩形状を呈し、前記パネル部は、該パネル部における周方向の両端に各別に位置する一対の前記柱部と、該パネル部におけるボトル軸方向の両端に各別に位置して周方向に延びる一対の梁部と、により区画され、該一対の梁部のうち、ボトル軸方向に沿う底部側に位置する下梁部に、ボトル軸方向に貫く貫通溝が形成され、該貫通溝は、前記下梁部における周方向の両端部のうち、前記側面視で前記パネル部が呈する矩形状の鋭角部分側の一端部に形成されていることを特徴とする。 In order to solve the above problems and achieve such an object, the bottle of the present invention is a bottle formed of a synthetic resin material in a bottomed cylindrical shape, and is directed radially inward to the trunk portion. A plurality of recessed panel portions are formed at intervals in the circumferential direction, and between the panel portions adjacent to each other in the circumferential direction are pillar portions, and the panel portion and the pillar portion include the body portion. in a side view as seen from the outside in the radial direction, has a rectangular shape extending in a direction inclined against the bottle axis direction, said panel portion includes a pair of said posts located at each other in the circumferential direction at both ends in said panel section And a pair of beam portions that are separately located at both ends of the panel portion in the bottle axial direction and extend in the circumferential direction, and is located on the bottom side along the bottle axial direction of the pair of beam portions A through groove penetrating in the bottle axial direction is formed in the lower beam portion, and the through groove is Of both end portions in the circumferential direction of the lower beam portion, characterized in that it is formed at one end of the rectangular sharp edges side where the panel section exhibits in the side view.

この発明によれば、下梁部の前記一端部に、ボトル軸方向に貫く貫通溝が形成されているので、胴部において、前記側面視でパネル部が呈する矩形状の2つの鋭角部分のうち、ボトル軸方向に沿う底部側の下鋭角部分が位置する部分、及びその周辺部分に柔軟性を具備させることができる。
これにより、ボトル内の減圧時に、胴部の変形を阻害することなく、胴部において、前記下鋭角部分が位置する部分、及びその周辺部分に生ずる応力を低減することができる。
したがって、減圧吸収容量の低下を防ぎつつ、柱部のうち、胴部の前記周辺部分に位置するボトル軸方向に沿う底部側の下端部が屈曲変形するのを抑制することができる。
According to the present invention, since the one end portion of the lower beam portion is formed with a through groove penetrating in the bottle axial direction, in the trunk portion, of the two rectangular acute angle portions that the panel portion exhibits in the side view The portion where the lower acute angle portion on the bottom side along the bottle axial direction is located and the peripheral portion thereof can be provided with flexibility.
Thereby, the stress which arises in the part in which the said lower acute angle part is located in the trunk | drum, and its peripheral part can be reduced, without inhibiting a deformation | transformation of a trunk | drum at the time of pressure reduction in a bottle.
Therefore, it is possible to prevent the lower end portion on the bottom side along the bottle axial direction located in the peripheral portion of the trunk portion from being bent and deformed while preventing the reduced pressure absorption capacity from decreasing.

ここで、前記胴部において、前記下梁部に対してボトル軸方向に沿う底部側に連なる部分には、前記貫通溝が開口する第1補強凹溝と、これらの第1補強凹溝及び貫通溝からボトル軸方向に沿う底部側に離れた第2補強凹溝と、がそれぞれ全周にわたって形成されてもよい。   Here, in the trunk portion, a portion that is connected to the bottom side along the bottle axial direction with respect to the lower beam portion includes a first reinforcing groove and an opening of the first reinforcing groove and the through hole. The 2nd reinforcement ditch | groove which left | separated to the bottom part side along a bottle axial direction from a groove | channel may each be formed over a perimeter.

この場合、胴部において、下梁部に対してボトル軸方向に沿う底部側に連なる部分に、第1補強凹溝のみならず第2補強凹溝も形成されているので、下梁部に貫通溝を形成したことで、胴部において下梁部が位置する部分のなかで、径方向の剛性が局所的に低くなる部分が生じてしまうのを抑制することが可能になり、胴部において下梁部が位置する部分の径方向の剛性を全周にわたって同等にすることができる。   In this case, not only the first reinforcing concave groove but also the second reinforcing concave groove is formed in a portion of the trunk portion that is connected to the bottom side along the bottle axial direction with respect to the lower beam portion. By forming the groove, it is possible to suppress the occurrence of a portion where the radial rigidity is locally reduced in the portion where the lower beam portion is located in the trunk portion. The radial rigidity of the portion where the beam portion is located can be made equal over the entire circumference.

また、前記パネル部を画成する一対の柱部及び一対の梁部それぞれの外周面は、段差なく連なってもよい。   In addition, the outer peripheral surfaces of the pair of column portions and the pair of beam portions that define the panel portion may be continuous without a step.

この場合、パネル部を画成する一対の柱部及び一対の梁部それぞれの外周面が段差なく連なっているので、ボトル内の減圧時に、一対の柱部及び一対の梁部それぞれの外周面のなかで、応力が集中する箇所が生ずるのを抑制することが可能になり、ボトル内の減圧時に、胴部が例えば屈曲等の不正変形をする起点となる部分が生ずるのを確実に抑えることができる。   In this case, since the outer peripheral surfaces of the pair of column portions and the pair of beam portions that define the panel portion are connected without a step, the outer peripheral surfaces of the pair of column portions and the pair of beam portions are reduced during decompression in the bottle. In particular, it is possible to suppress the occurrence of stress-concentrated portions, and to reliably suppress the occurrence of a portion where the body portion starts to be deformed illegally, such as bending, during decompression in the bottle. it can.

さらに、前記パネル部には、前記側面視で該パネル部が呈する矩形状の2つの鋭角部分同士を連結する対角溝が形成されてもよい。   Furthermore, the said groove | channel part may be formed with the diagonal groove | channel which connects two rectangular acute angle parts which this panel part exhibits by the said side view.

この場合、パネル部に前記対角溝が形成されているので、パネル部の柔軟性を向上させることが可能になり、減圧吸収容量を確実に確保することができる。   In this case, since the diagonal groove is formed in the panel portion, the flexibility of the panel portion can be improved, and the reduced pressure absorption capacity can be reliably ensured.

本発明に係るボトルによれば、減圧吸収容量の低下を防ぎつつ、柱部の下端部が屈曲変形するのを抑制することができる。   According to the bottle according to the present invention, it is possible to prevent the lower end portion of the column portion from being bent and deformed while preventing the reduced pressure absorption capacity from decreasing.

本発明に係る第1実施形態として示したボトルの側面図である。It is a side view of the bottle shown as 1st Embodiment concerning this invention. 本発明に係る第2実施形態として示したボトルの側面図である。It is a side view of the bottle shown as 2nd Embodiment concerning this invention. 本発明に係る第3実施形態として示したボトルの側面図である。It is a side view of the bottle shown as 3rd Embodiment concerning this invention.

以下、図面を参照し、この発明の実施の形態について説明する。本実施形態に係るボトル1は、図1に示されるように、口部11、肩部12、胴部13、及び底部14を備え、これら11〜14が、それぞれの中心軸線を共通軸上に位置させた状態で、この共通軸方向の一方側から他方側に向けてこの順に連設されている。なお、ボトル1は、例えばブロー成形等によりポリエチレンテレフタレート等の合成樹脂材料で一体に形成されている。   Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the bottle 1 according to the present embodiment includes a mouth part 11, a shoulder part 12, a body part 13, and a bottom part 14, and these 11 to 14 have their central axes on a common axis. In this state, they are continuously provided in this order from one side to the other side in the common axis direction. The bottle 1 is integrally formed of a synthetic resin material such as polyethylene terephthalate by, for example, blow molding.

ここで本実施形態では、ボトル1の全ての部位11〜14の横断面の基本形状が円形状となっており、前記共通軸はこの横断面がなす円形の中央部を通る直線となっている。
以下、この共通軸をボトル軸Oといい、また、ボトル軸O方向に沿って口部11側を上側といい、底部14側を下側という。さらに、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。
Here, in this embodiment, the basic shape of the cross section of all the parts 11 to 14 of the bottle 1 is a circular shape, and the common axis is a straight line passing through a circular central portion formed by the cross section. .
Hereinafter, this common axis is referred to as the bottle axis O, the mouth 11 side is referred to as the upper side, and the bottom 14 side is referred to as the lower side along the bottle axis O direction. Furthermore, the direction orthogonal to the bottle axis O is referred to as the radial direction, and the direction of circling around the bottle axis O is referred to as the circumferential direction.

図示の例では、口部11の外周面に雄ねじ部11aが形成されており、この雄ねじ部11aに図示されないキャップが着脱可能に螺着される。
口部11と肩部12との接続部分に、全周にわたって延びるネックリング15が径方向の外側に向けて突設されている。
肩部12は、下方から上方に向かうに従い漸次縮径している。
In the illustrated example, a male screw portion 11a is formed on the outer peripheral surface of the mouth portion 11, and a cap (not shown) is detachably screwed to the male screw portion 11a.
A neck ring 15 extending over the entire circumference is projected from the connecting portion between the mouth portion 11 and the shoulder portion 12 toward the outer side in the radial direction.
The shoulder portion 12 is gradually reduced in diameter from the bottom to the top.

胴部13には、該胴部13を、上側の上側胴部17と下側の下側胴部23とに区画し、かつボトル軸O方向に収縮変形可能にする周溝16が全周にわたって延設されている。
本実施形態では、周溝16は、胴部13におけるボトル軸O方向のほぼ中央部に形成されている。また、胴部13は、例えば内圧が低下したとき、あるいはボトル軸O方向に圧縮荷重が加えられたときに、周溝16の溝幅が狭まることでボトル軸O方向に収縮変形する。
The body portion 13 has a circumferential groove 16 that divides the body portion 13 into an upper upper body portion 17 and a lower lower body portion 23 and that can shrink and deform in the bottle axis O direction. It is extended.
In the present embodiment, the circumferential groove 16 is formed at a substantially central portion of the body portion 13 in the bottle axis O direction. Further, for example, when the internal pressure is reduced or when a compressive load is applied in the bottle axis O direction, the body part 13 contracts and deforms in the bottle axis O direction due to the narrowing of the groove width of the circumferential groove 16.

周溝16を画成する両側面25、26のうち、上側に位置して下側を向く上側面25は、下側に位置して上側を向く下側面26より、ボトル軸Oに直交する水平面に対する傾斜角度が小さくなっている。図示の例では、上側面25は、径方向に沿って延在し、下側面26は、径方向の内側から外側に向かうに従い漸次下方に向けて延在している。上側胴部17のうち、上側面25に連なる下端部17bは、上方から下方に向かうに従い漸次縮径している。上側胴部17の下端部17bは多段状に形成されている。上側胴部17の下端部17bは、下側胴部23のうち、下側面26に連なる上端部より外径が小さくなっている。なお、上側胴部17の下端部17b、及び下側胴部23の上端部それぞれの外径の大小関係は、この実施形態に限らず適宜変更してもよい。   Of the both side surfaces 25 and 26 that define the circumferential groove 16, the upper side surface 25 that is located on the upper side and faces the lower side is a horizontal plane that is perpendicular to the bottle axis O than the lower side surface 26 that is located on the lower side and faces the upper side. The inclination angle with respect to is small. In the illustrated example, the upper side surface 25 extends along the radial direction, and the lower side surface 26 extends gradually downward from the inner side to the outer side in the radial direction. Of the upper body portion 17, the lower end portion 17 b connected to the upper side surface 25 is gradually reduced in diameter from the upper side toward the lower side. The lower end portion 17b of the upper body portion 17 is formed in a multistage shape. The lower end portion 17 b of the upper body portion 17 has a smaller outer diameter than the upper end portion of the lower body portion 23 that is continuous with the lower side surface 26. In addition, the magnitude relationship of the outer diameter of each of the lower end portion 17b of the upper body portion 17 and the upper end portion of the lower body portion 23 is not limited to this embodiment, and may be appropriately changed.

上側胴部17には、周溝16より深さが浅い環状溝17aが、ボトル軸O方向に間隔をあけて複数全周にわたって延設されている。なお、ボトル軸O方向で隣り合う環状溝17a同士の間の間隔は、互いに同等となっている。また、複数の環状溝17aは互いに同形同大となっている。
ここで、周溝16及び環状溝17aそれぞれの、径方向の内端に位置する内端面は、凹曲面状に形成されており、周溝16の内端面における曲率半径は、環状溝17aの内端面の曲率半径より小さくなっている。
In the upper body portion 17, an annular groove 17 a having a shallower depth than the circumferential groove 16 is extended over the entire circumference at intervals in the bottle axis O direction. In addition, the space | interval between the annular grooves 17a adjacent in the bottle axis | shaft O direction is mutually equal. The plurality of annular grooves 17a have the same shape and size.
Here, the inner end face located at the inner end in the radial direction of each of the circumferential groove 16 and the annular groove 17a is formed in a concave curved surface, and the radius of curvature at the inner end face of the circumferential groove 16 is the inner radius of the annular groove 17a. It is smaller than the radius of curvature of the end face.

下側胴部23には、径方向の内側に向けて窪むパネル部24が周方向に間隔をあけて複数形成されるとともに、周方向で隣り合うパネル部24同士の間が柱部31とされ、パネル部24、及び柱部31は、胴部13を径方向の外側から見た側面視で、ボトル軸O方向、及び周方向の双方向に対して傾斜する方向に延びる矩形状を呈している。図示の例では、パネル部24の前記側面視形状は、平行四辺形状となっている。なお、柱部31は、パネル部24より周方向に沿う大きさが小さくなっている。   A plurality of panel portions 24 that are recessed inward in the radial direction are formed in the lower body portion 23 at intervals in the circumferential direction, and between the panel portions 24 that are adjacent in the circumferential direction are between the column portion 31 and the panel portion 24. The panel portion 24 and the column portion 31 have a rectangular shape extending in a direction inclined with respect to the bottle axis O direction and the circumferential direction in a side view when the body portion 13 is viewed from the outside in the radial direction. ing. In the illustrated example, the side view shape of the panel portion 24 is a parallelogram shape. The column part 31 is smaller in size along the circumferential direction than the panel part 24.

パネル部24は、該パネル部24における周方向の両端に各別に位置する一対の柱部31と、パネル部24におけるボトル軸O方向の両端に各別に位置して周方向に延びる一対の梁部32a、32bと、により区画されている。パネル部24を画成する一対の柱部31及び一対の梁部32a、32bそれぞれの外周面は、段差なく連なっている。梁部32a、32bは、全周にわたって延在している。前記側面視でパネル部24が呈する矩形状の4つの角部24a、24bは、パネル部24の外側に向けて突の曲線をなすように湾曲している。   The panel portion 24 includes a pair of column portions 31 that are separately located at both ends in the circumferential direction of the panel portion 24 and a pair of beam portions that are separately located at both ends in the bottle axis O direction of the panel portion 24 and extend in the circumferential direction. 32a and 32b. The outer peripheral surfaces of the pair of column portions 31 and the pair of beam portions 32a and 32b that define the panel portion 24 are continuous without a step. The beam portions 32a and 32b extend over the entire circumference. The four rectangular corners 24 a and 24 b exhibited by the panel portion 24 in the side view are curved so as to form a protruding curve toward the outside of the panel portion 24.

そして本実施形態では、一対の梁部32a、32bのうち、下側に位置する下梁部32aに、ボトル軸O方向に貫く第1貫通溝(貫通溝)33が形成されている。第1貫通溝33は、下梁部32aにおける周方向の両端部のうち、前記側面視でパネル部24が呈する矩形状の鋭角部分24a側の一端部に形成されている。これにより、下梁部32aの一端部と、柱部31と、の間には周方向の隙間が設けられている。また下梁部32aは第1貫通溝33により周方向に分断されている。   And in this embodiment, the 1st penetration groove | channel (penetration groove | channel) 33 penetrated in the bottle axis | shaft O direction is formed in the lower beam part 32a located in the lower side among a pair of beam parts 32a and 32b. The first through groove 33 is formed at one end of the lower beam portion 32a on the side of the rectangular acute angle portion 24a that the panel portion 24 exhibits in the side view, in both circumferential ends. Thereby, a circumferential clearance is provided between one end of the lower beam portion 32 a and the column portion 31. The lower beam portion 32 a is divided in the circumferential direction by the first through groove 33.

図示の例では、第1貫通溝33の溝深さは、下梁部32a及び柱部31の、パネル部24からの径方向の外側に向けた突出高さと同等になっている。また、第1貫通溝33及び柱部31それぞれの周方向に沿う大きさは互いに同等になっている。第1貫通溝33の下端開口部の周方向の大きさは、上方から下方に向かうに従い漸次広くなっている。第1貫通溝33は、前記側面視で、パネル部24及び柱部31が傾斜する方向に沿って延在している。
なお、第1貫通溝33は、ボトル軸O方向に沿って延在してもよいし、溝幅が全長にわたって同等になってもよいし、溝幅が上方から下方に向かって狭くなっていてもよい。
In the illustrated example, the depth of the first through groove 33 is equal to the protruding height of the lower beam portion 32a and the column portion 31 from the panel portion 24 toward the outside in the radial direction. Moreover, the magnitude | size along the circumferential direction of each of the 1st penetration groove | channel 33 and the pillar part 31 is mutually equivalent. The size in the circumferential direction of the lower end opening of the first through groove 33 is gradually increased from the top to the bottom. The first through groove 33 extends along the direction in which the panel portion 24 and the column portion 31 are inclined in the side view.
The first through groove 33 may extend along the bottle axis O direction, the groove width may be the same over the entire length, or the groove width becomes narrower from the top to the bottom. Also good.

また、下側胴部23において、下梁部32aに対して下側から連なる部分には、第1貫通溝33が開口する第1補強凹溝34と、これらの第1補強凹溝34及び第1貫通溝33から下側に離れた第2補強凹溝35と、がそれぞれ全周にわたって形成されている。パネル部24の内側は、第1貫通溝33を通して第1補強凹溝34と連通している。   Further, in the lower trunk portion 23, a portion that is continuous from the lower side with respect to the lower beam portion 32a includes a first reinforcing groove 34 in which a first through groove 33 is opened, and the first reinforcing groove 34 and the first reinforcing groove 34. A second reinforcing groove 35 that is spaced downward from the first through groove 33 is formed over the entire circumference. The inner side of the panel portion 24 communicates with the first reinforcing concave groove 34 through the first through groove 33.

以上説明したように、本実施形態によるボトル1によれば、下梁部32aの前記一端部に、ボトル軸O方向に貫く第1貫通溝33が形成されているので、胴部13において、前記側面視でパネル部24が呈する矩形状の2つの鋭角部分24aのうち、下側の下鋭角部分24aが位置する部分、及びその周辺部分に柔軟性を具備させることができる。
これにより、ボトル1内の減圧時に、胴部13の変形を阻害することなく、胴部13において、下鋭角部分24aが位置する部分、及びその周辺部分に生ずる応力を低減することができる。
したがって、減圧吸収容量の低下を防ぎつつ、柱部31のうち、胴部13の前記周辺部分に位置する下端部が屈曲変形するのを抑制することができる。
As described above, according to the bottle 1 according to the present embodiment, the first through groove 33 penetrating in the bottle axis O direction is formed in the one end portion of the lower beam portion 32a. Of the two rectangular acute angle portions 24a that the panel portion 24 exhibits in a side view, the portion where the lower lower acute angle portion 24a is located and its peripheral portion can be provided with flexibility.
Thereby, the stress which arises in the part in which the lower acute angle part 24a is located, and its peripheral part in the trunk | drum 13 can be reduced, without inhibiting the deformation | transformation of the trunk | drum 13 at the time of pressure reduction in the bottle 1. FIG.
Therefore, it is possible to prevent the lower end portion of the column portion 31 located at the peripheral portion of the body portion 13 from being bent and deformed while preventing the reduced pressure absorption capacity from decreasing.

また、胴部13において、下梁部32aに対して下側から連なる部分に、第1補強凹溝34のみならず第2補強凹溝35も形成されているので、下梁部32aに第1貫通溝33を形成したことで、胴部13において下梁部32aが位置する部分のなかで、径方向の剛性が局所的に低くなる部分が生じてしまうのを抑制することが可能になり、胴部13において下梁部32aが位置する部分の径方向の剛性を全周にわたって同等にすることができる。   Further, in the trunk portion 13, not only the first reinforcing concave groove 34 but also the second reinforcing concave groove 35 is formed in a portion continuous from the lower side with respect to the lower beam portion 32 a. By forming the through-groove 33, it becomes possible to suppress the occurrence of a portion where the radial rigidity is locally reduced in the portion where the lower beam portion 32a is located in the trunk portion 13, In the trunk portion 13, the radial rigidity of the portion where the lower beam portion 32a is located can be made equal over the entire circumference.

さらに、パネル部24を画成する一対の柱部31及び一対の梁部32a、32bそれぞれの外周面が段差なく連なっているので、ボトル1内の減圧時に、一対の柱部31及び一対の梁部32a、32bそれぞれの外周面のなかで、応力が集中する箇所が生ずるのを抑制することが可能になり、ボトル1内の減圧時に、胴部13が例えば屈曲等の不正変形をする起点となる部分が生ずるのを確実に抑えることができる。   Further, since the outer peripheral surfaces of the pair of column portions 31 and the pair of beam portions 32a and 32b that define the panel portion 24 are connected without any step, the pair of column portions 31 and the pair of beams are decompressed when the bottle 1 is decompressed. It is possible to suppress the occurrence of stress-concentrated locations in the outer peripheral surfaces of the portions 32a and 32b, and when the pressure in the bottle 1 is reduced, the body portion 13 starts from an illegal deformation such as bending. It is possible to reliably suppress the occurrence of the part.

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変更等も含まれる。   As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The change etc. of the range which does not deviate from the summary of this invention are included.

例えば、前述した実施形態では、胴部13に周溝16及び環状溝17aを形成したが、これらの周溝16及び環状溝17aに代えて、胴部13における全域にわたって、パネル部24及び柱部31を形成してもよい。
また、上側胴部17の下端部17bの形態、及び第1貫通溝33の形態は、前記実施形態に限らず適宜変更してもよい。
例えば、第1貫通溝33の溝深さを、下梁部32a及び柱部31の、パネル部24からの径方向の外側に向けた突出高さより大きくし、第1貫通溝33の溝底を、パネル部24より径方向の内側に位置させてもよい。また、第1貫通溝33の溝深さを、下梁部32a及び柱部31の、パネル部24からの径方向の外側に向けた突出高さより小さくし、第1貫通溝33の溝底を、パネル部24より径方向の外側に位置させてもよい。
また、一対の梁部32a、32bのうち、上側に位置する上梁部32bの外周面を、柱部31の外周面より径方向の内側に位置させてもよい。例えば、上梁部32bの外周面を全周にわたって柱部31の外周面より径方向の内側に位置させてもよいし、上梁部32bのうち、パネル部24を画成する部分のみの外周面を柱部31の外周面より径方向の内側に位置させてもよい。また、上梁部32bの外周面と、パネル部24の外周面と、を面一に連ならせてもよい。
For example, in the above-described embodiment, the circumferential groove 16 and the annular groove 17a are formed in the trunk portion 13, but instead of the circumferential groove 16 and the annular groove 17a, the panel portion 24 and the column portion are extended over the entire area of the trunk portion 13. 31 may be formed.
Moreover, the form of the lower end part 17b of the upper trunk | drum 17 and the form of the 1st penetration groove 33 are not restricted to the said embodiment, You may change suitably.
For example, the groove depth of the first through groove 33 is made larger than the protruding height of the lower beam portion 32a and the column portion 31 toward the outside in the radial direction from the panel portion 24, and the groove bottom of the first through groove 33 is formed. Further, it may be positioned on the inner side in the radial direction from the panel portion 24. Further, the groove depth of the first through groove 33 is set to be smaller than the height of the lower beam portion 32a and the column portion 31 protruding outward in the radial direction from the panel portion 24, and the groove bottom of the first through groove 33 is formed. Further, it may be positioned on the outer side in the radial direction from the panel portion 24.
Moreover, you may position the outer peripheral surface of the upper beam part 32b located above among a pair of beam parts 32a and 32b from the outer peripheral surface of the column part 31 inside radial direction. For example, the outer peripheral surface of the upper beam portion 32b may be positioned radially inward from the outer peripheral surface of the column portion 31 over the entire periphery, or the outer periphery of only the portion of the upper beam portion 32b that defines the panel portion 24. The surface may be positioned on the inner side in the radial direction from the outer peripheral surface of the column portion 31. Further, the outer peripheral surface of the upper beam portion 32b and the outer peripheral surface of the panel portion 24 may be connected to be flush with each other.

また、上側面25及び下側面26それぞれのボトル軸Oに直交する水平面に対する傾斜角度の大小関係は、前記実施形態に限らず適宜変更してもよい。
前記実施形態では、周溝16として、その溝幅が狭められることにより胴部13をボトル軸O方向に収縮変形させる構成を示したが、これに代えて、胴部13をこのように変形させないような溝としてもよい。また、周溝16は形成しなくてもよい。
ボトル1を形成する合成樹脂材料は、ポリエチレンテレフタレートに限らず、例えばポリエチレンナフタレート、非晶性ポリエステル等、またはこれらのブレンド材料等、適宜変更してもよい。
ボトル1は単層構造体に限らず中間層を有する積層構造体としてもよい。この中間層としては、例えばガスバリア性を有する樹脂材料からなる層、再生材からなる層、若しくは酸素吸収性を有する樹脂材料からなる層等が挙げられる。
前述した実施形態では、肩部12、胴部13及び底部14それぞれのボトル軸Oに直交する横断面視形状を円形状としたが、これに限らず例えば、多角形状にする等適宜変更してもよい。
Moreover, the magnitude relationship of the inclination angle with respect to the horizontal plane orthogonal to the bottle axis O of each of the upper side surface 25 and the lower side surface 26 is not limited to the above embodiment, and may be changed as appropriate.
In the above-described embodiment, the circumferential groove 16 is configured to shrink and deform the body portion 13 in the bottle axis O direction by narrowing the groove width, but instead, the body portion 13 is not deformed in this way. Such a groove may be used. Further, the circumferential groove 16 may not be formed.
The synthetic resin material forming the bottle 1 is not limited to polyethylene terephthalate, but may be appropriately changed, for example, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
The bottle 1 is not limited to a single layer structure, and may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having a gas barrier property, a layer made of a recycled material, or a layer made of a resin material having an oxygen absorbing property.
In the embodiment described above, the cross-sectional view shape orthogonal to the bottle axis O of each of the shoulder portion 12, the trunk portion 13, and the bottom portion 14 is a circular shape. Also good.

さらに図2に示されるように、図1に示したボトル1において、パネル部24に、前述の4つの角部24a、24bのうち、2つの鋭角部分24a同士を連結する対角溝37を形成してもよい。
対角溝37は、前記側面視で直線状に延在している。対角溝37の溝幅は、第1貫通溝33の溝幅より狭くなっている。対角溝37は、第1貫通溝33より溝深さが浅くなっている。対角溝37は第1貫通溝33に連通している。
このボトル2では、パネル部24に対角溝37が形成されているので、パネル部24の柔軟性を向上させることが可能になり、減圧吸収容量を確実に確保することができる。
As shown in FIG. 2, in the bottle 1 shown in FIG. 1, a diagonal groove 37 is formed in the panel portion 24 to connect two acute angle portions 24 a among the four corner portions 24 a and 24 b described above. May be.
The diagonal groove 37 extends linearly in the side view. The groove width of the diagonal groove 37 is narrower than the groove width of the first through groove 33. The diagonal groove 37 is shallower than the first through groove 33. The diagonal groove 37 communicates with the first through groove 33.
In this bottle 2, since the diagonal groove | channel 37 is formed in the panel part 24, it becomes possible to improve the softness | flexibility of the panel part 24 and can ensure a decompression absorption capacity | capacitance reliably.

また図3に示されるように、図2に示したボトル2において、上梁部32bに、ボトル軸O方向に貫く第2貫通溝39を形成してもよい。
第2貫通溝39は、上梁部32bにおける周方向の両端部のうち、前記側面視でパネル部24が呈する矩形状の鋭角部分24a側の一端部に形成されている。これにより、上梁部32bの一端部と、柱部31と、の間には周方向の隙間が設けられている。図示の例では、第2貫通溝39の溝深さは、上梁部32b及び柱部31の、パネル部24からの径方向の外側に向けた突出高さと同等になっている。第2貫通溝39及び柱部31それぞれの周方向に沿う大きさは互いに同等になっている。第2貫通溝39は、周溝16に開口している。第2貫通溝39は周溝16より溝深さが浅くなっている。第2貫通溝39は、前記側面視で、パネル部24及び柱部31が傾斜する方向に沿って延在している。
なお、例えば、第2貫通溝39の溝深さを、上梁部32b及び柱部31の、パネル部24からの径方向の外側に向けた突出高さより大きくし、第2貫通溝39の溝底を、パネル部24より径方向の内側に位置させてもよい。また、第2貫通溝39の溝深さを、上梁部32b及び柱部31の、パネル部24からの径方向の外側に向けた突出高さより小さくし、第2貫通溝39の溝底を、パネル部24より径方向の外側に位置させてもよい。
Further, as shown in FIG. 3, in the bottle 2 shown in FIG. 2, a second through groove 39 penetrating in the bottle axis O direction may be formed in the upper beam portion 32b.
The 2nd penetration groove 39 is formed in the end part by the side of the rectangular acute angle part 24a which panel part 24 exhibits in the side view among the both ends of the peripheral direction in upper beam part 32b. Thereby, a circumferential clearance is provided between one end of the upper beam portion 32 b and the column portion 31. In the illustrated example, the depth of the second through groove 39 is equal to the protruding height of the upper beam portion 32b and the column portion 31 from the panel portion 24 toward the outside in the radial direction. The sizes of the second through groove 39 and the column portion 31 along the circumferential direction are equal to each other. The second through groove 39 is open to the circumferential groove 16. The second through groove 39 is shallower than the circumferential groove 16. The second through groove 39 extends along the direction in which the panel portion 24 and the column portion 31 are inclined in the side view.
For example, the depth of the second through groove 39 is set to be larger than the protruding height of the upper beam portion 32b and the column portion 31 from the panel portion 24 toward the outside in the radial direction. The bottom may be positioned on the inner side in the radial direction from the panel portion 24. Further, the depth of the second through groove 39 is made smaller than the protruding height of the upper beam portion 32b and the column portion 31 toward the outside in the radial direction from the panel portion 24, and the groove bottom of the second through groove 39 is formed. Further, it may be positioned on the outer side in the radial direction from the panel portion 24.

その他、本発明の趣旨を逸脱しない範囲で、前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り、また、前述した変形例を適宜組み合わせてもよい。  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modification examples may be appropriately combined.

次に、以上説明した作用効果についての検証試験について説明する。   Next, a verification test for the above-described effects will be described.

実施例として、図1、図2及び図3に示すボトル1、2、3を採用し、比較例として、図1に示すボトル1において第1貫通溝33を有しないボトルを採用した。なお、それぞれのボトルは、内容量が500ml用のものを採用した。
そして、それぞれのボトル内を徐々に減圧していき、例えば屈曲等の不正変形が生ずるまでの内容積の減少量(減圧吸収容量)を測定した。
その結果、比較例のボトルでは28.7mlである一方、図1で示したボトル1では31.2mlであり、図2で示したボトル2では38.7mlであり、図3で示したボトル3では37.2mlであることが確認され、実施例のボトル1、2、3では、比較例のボトルより減圧吸収容量が向上できたことが確認された。
As an example, the bottles 1, 2, and 3 shown in FIGS. 1, 2 and 3 were adopted, and as a comparative example, a bottle without the first through groove 33 was adopted in the bottle 1 shown in FIG. In addition, as for each bottle, the thing for 500 ml of internal capacity was employ | adopted.
The inside of each bottle was gradually depressurized, and the amount of decrease in the internal volume (decompression absorption capacity) until an unauthorized deformation such as bending occurred was measured.
As a result, while the bottle of the comparative example is 28.7 ml, the bottle 1 shown in FIG. 1 is 31.2 ml, the bottle 2 shown in FIG. 2 is 38.7 ml, and the bottle 3 shown in FIG. Was confirmed to be 37.2 ml, and it was confirmed that the reduced-pressure absorption capacity of the bottles 1, 2, and 3 of the examples could be improved as compared with the bottle of the comparative example.

1〜3 ボトル
13 胴部
14 底部
24 パネル部
24a 鋭角部分
31 柱部
32a 下梁部
32b 上梁部
33 第1貫通溝(貫通溝)
34 第1補強凹溝
35 第2補強凹溝
37 対角溝
O ボトル軸
1-3 Bottle 13 Body 14 Bottom 24 Panel 24a Acute angle 31 Column 32a Lower beam 32b Upper beam 33 First through groove (through groove)
34 First reinforcing groove 35 Second reinforcing groove 37 Diagonal groove O Bottle shaft

Claims (4)

合成樹脂材料で有底筒状に形成されたボトルであって、
胴部に、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、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、及び前記柱部は、前記胴部を径方向の外側から見た側面視で、ボトル軸方向に対して傾斜する方向に延びる矩形状を呈し、
前記パネル部は、該パネル部における周方向の両端に各別に位置する一対の前記柱部と、該パネル部におけるボトル軸方向の両端に各別に位置して周方向に延びる一対の梁部と、により区画され、
該一対の梁部のうち、ボトル軸方向に沿う底部側に位置する下梁部に、ボトル軸方向に貫く貫通溝が形成され、
該貫通溝は、前記下梁部における周方向の両端部のうち、前記側面視で前記パネル部が呈する矩形状の鋭角部分側の一端部に形成されていることを特徴とするボトル。
A bottle formed of a synthetic resin material in a bottomed cylindrical shape,
A plurality of panel portions that are recessed toward the inner side in the radial direction are formed in the body portion at intervals in the circumferential direction, and between the panel portions adjacent in the circumferential direction are column portions,
Said panel portion and said pillar portion is a side view as seen the body portion from the outside in the radial direction, has a rectangular shape extending in a direction inclined against the bottle axis Direction,
The panel part is a pair of pillars that are separately located at both ends in the circumferential direction of the panel part, and a pair of beam parts that are separately located at both ends of the panel part in the bottle axial direction and extend in the circumferential direction, Divided by
Of the pair of beams, a through groove that penetrates in the bottle axial direction is formed in the lower beam located on the bottom side along the bottle axial direction,
The bottle is characterized in that the through groove is formed at one end portion on the side of the rectangular acute angle portion that the panel portion exhibits in the side view among both end portions in the circumferential direction of the lower beam portion.
請求項1に記載のボトルであって、
前記胴部において、前記下梁部に対してボトル軸方向に沿う底部側に連なる部分には、前記貫通溝が開口する第1補強凹溝と、これらの第1補強凹溝及び貫通溝からボトル軸方向に沿う底部側に離れた第2補強凹溝と、がそれぞれ全周にわたって形成されていることを特徴とするボトル。
The bottle according to claim 1,
In the trunk portion, a portion connected to the bottom side along the bottle axial direction with respect to the lower beam portion is provided with a first reinforcing concave groove in which the through groove is opened, and the first reinforcing concave groove and the through groove are used for the bottle. A second reinforcing groove that is separated to the bottom side along the axial direction is formed over the entire circumference.
請求項1または2に記載のボトルであって、
前記パネル部を画成する一対の柱部及び一対の梁部それぞれの外周面は、段差なく連なっていることを特徴とするボトル。
The bottle according to claim 1 or 2,
The bottle characterized in that the pair of pillar portions and the pair of beam portions that define the panel portion are connected to each other without a step.
請求項1から3のいずれか1項に記載のボトルであって、
前記パネル部には、前記側面視で該パネル部が呈する矩形状の2つの鋭角部分同士を連結する対角溝が形成されていることを特徴とするボトル。
The bottle according to any one of claims 1 to 3,
The said panel part is formed with the diagonal groove | channel which connects two rectangular acute angle parts which this panel part exhibits by the said side view.
JP2012261924A 2012-11-30 2012-11-30 Bottle Active JP6040013B2 (en)

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WO2016021009A1 (en) * 2014-08-06 2016-02-11 サントリーホールディングス株式会社 Plastic container
JP6510357B2 (en) * 2015-07-30 2019-05-08 株式会社吉野工業所 Plastic container
WO2018123944A1 (en) * 2016-12-26 2018-07-05 サントリーホールディングス株式会社 Resin-made container
JP2018104025A (en) * 2016-12-26 2018-07-05 サントリーホールディングス株式会社 Resin container

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JPH0551036A (en) * 1991-08-20 1993-03-02 Jii K Graphics:Kk Foldable container
JPH10218148A (en) * 1997-01-31 1998-08-18 Yamamura Glass Co Ltd Synthetic resin bottle
JP4192303B2 (en) * 1998-08-11 2008-12-10 東洋製罐株式会社 Round plastic bottle
JP3608420B2 (en) * 1999-02-24 2005-01-12 東洋製罐株式会社 Plastic container
US7198165B2 (en) * 2004-05-20 2007-04-03 Graham Packaging Pet Technologies Inc. Molded plastic hot-fill container and method of manufacture
JP4475010B2 (en) * 2004-05-27 2010-06-09 株式会社吉野工業所 Synthetic resin housing
JP4986436B2 (en) * 2005-10-28 2012-07-25 株式会社吉野工業所 Synthetic resin bottle-type container with a vacuum absorbing panel
US8113370B2 (en) * 2008-06-25 2012-02-14 Amcor Limited Plastic container having vacuum panels
JP5321814B2 (en) * 2009-03-13 2013-10-23 東洋製罐株式会社 Packaging container with spiral vacuum absorption panel

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