JP5568439B2 - Bottle - Google Patents

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Publication number
JP5568439B2
JP5568439B2 JP2010239946A JP2010239946A JP5568439B2 JP 5568439 B2 JP5568439 B2 JP 5568439B2 JP 2010239946 A JP2010239946 A JP 2010239946A JP 2010239946 A JP2010239946 A JP 2010239946A JP 5568439 B2 JP5568439 B2 JP 5568439B2
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Prior art keywords
wall portion
bottle
peripheral wall
radial direction
depressed
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JP2012091817A (en
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宏明 今井
忠和 中山
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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Priority to JP2010239946A priority Critical patent/JP5568439B2/en
Application filed by Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Priority to PCT/JP2011/074302 priority patent/WO2012057026A1/en
Priority to AU2011321582A priority patent/AU2011321582B2/en
Priority to KR1020137011184A priority patent/KR101826117B1/en
Priority to US13/881,273 priority patent/US9242762B2/en
Priority to EP11836160.9A priority patent/EP2634106B1/en
Priority to CA2815782A priority patent/CA2815782C/en
Priority to CN201180051398.6A priority patent/CN103180213B/en
Priority to TW100138731A priority patent/TWI526368B/en
Publication of JP2012091817A publication Critical patent/JP2012091817A/en
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Publication of JP5568439B2 publication Critical patent/JP5568439B2/en
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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、ブロー成形により合成樹脂材料で有底筒状に形成されたボトルとして、例えば下記特許文献１に示されるように、底部の底壁部が、外周縁部に位置する接地部と、該接地部にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部と、該立ち上がり周壁部の上端部からボトル径方向の内側に向けて突出する環状の可動壁部と、該可動壁部のボトル径方向の内端部から上方に向けて延びる陥没周壁部と、を備え、可動壁部が、陥没周壁部を上方に向けて移動させるように、立ち上がり周壁部との接続部分を中心に回動することにより、ボトル内の減圧を吸収する構成が知られている。   Conventionally, as a bottle formed into a bottomed cylindrical shape with a synthetic resin material by blow molding, for example, as shown in Patent Document 1 below, the bottom wall portion of the bottom portion is disposed on the outer peripheral edge portion, A rising peripheral wall portion that extends from the inside in the bottle radial direction and extends upward to the grounding portion, an annular movable wall portion that protrudes from the upper end portion of the rising peripheral wall portion toward the inside in the bottle radial direction, and the movable wall portion A depressed peripheral wall portion extending upward from the inner end portion in the bottle radial direction, and the movable wall portion rotates around the connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward. A configuration is known that absorbs the reduced pressure in the bottle by moving.

特開２０１０−１２６１８４号公報JP 2010-126184 A

ところで、前記従来のボトルでは、ボトル内の減圧吸収性能を向上させることに対して改善の余地があった。   By the way, in the said conventional bottle, there was room for improvement with respect to improving the pressure reduction absorption performance in a bottle.

本発明は、前述した事情に鑑みてなされたものであって、その目的は、ボトル内の減圧吸収性能を向上させることができるボトルを提供することである。   This invention is made | formed in view of the situation mentioned above, The objective is to provide the bottle which can improve the pressure reduction absorption performance in a bottle.

前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、ブロー成形により合成樹脂材料で有底筒状に形成されたボトルであって、底部の底壁部は、外周縁部に位置する接地部と、該接地部にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部と、該立ち上がり周壁部の上端部からボトル径方向の内側に向けて突出する環状の可動壁部と、該可動壁部のボトル径方向の内端部から上方に向けて延びる陥没周壁部と、該陥没周壁部の上端開口部を閉塞する閉塞壁部と、を備え、前記可動壁部は、前記陥没周壁部を上方に向けて移動させるように、前記立ち上がり周壁部との接続部分を中心に回動自在に配設され、前記陥没周壁部は多段に形成され、上方から下方に向かうに従い漸次、拡径し、前記陥没周壁部は、前記可動壁部のボトル径方向の内端部から上方に向かうに従い漸次、縮径された下筒部と、前記閉塞壁部の外周縁部から下方に向かうに従い漸次、拡径された上筒部と、これらの両筒部を連結する段部と、を備え、前記上筒部は、下方に向けて突の曲面状に形成されていることを特徴とする。 In order to solve the above problems, the present invention proposes the following means.
The bottle according to the present invention is a bottle formed into a bottomed cylindrical shape with a synthetic resin material by blow molding, and the bottom wall portion of the bottom portion includes a grounding portion located at the outer peripheral edge portion, and a bottle diameter at the grounding portion. A rising peripheral wall portion extending from the inner side in the direction and extending upward; an annular movable wall portion projecting inward from the upper end portion of the rising peripheral wall portion toward the inner side in the bottle radial direction; A depressed peripheral wall portion extending upward from the end portion, and a closed wall portion closing the upper end opening of the depressed peripheral wall portion, wherein the movable wall portion moves the depressed peripheral wall portion upward. The recessed peripheral wall portion is formed in multiple stages and is gradually increased in diameter from the upper side toward the lower side, and the depressed peripheral wall portion is Upward from the inner end of the movable wall in the bottle radial direction The lower cylinder part that is gradually reduced in diameter as it goes, the upper cylinder part that is gradually enlarged in diameter as it goes downward from the outer peripheral edge part of the blocking wall part, and a step part that connects these two cylinder parts. And the upper tube portion is formed in a curved shape protruding downward .

この発明によれば、陥没周壁部が多段に形成されているので、この陥没周壁部は、このボトルのブロー成形時に、合成樹脂材料が大きく延伸させられることで形成されることとなる。
このように、ブロー成形時に合成樹脂材料が大きく延伸させられることで陥没周壁部が形成されるので、陥没周壁部の薄肉化を図ることが可能になり、ボトル内が減圧したときに、陥没周壁部を上方に向けて移動させ易くすることができる。これにより、ボトル内の減圧吸収性能を向上させることができる。
また前述のように、ブロー成形時に合成樹脂材料が大きく延伸させられることで陥没周壁部が形成されるので、陥没周壁部における配向結晶化の程度を高めることが可能になり、加熱された状態にある内容物が充填されたときに、陥没周壁部が変形するのを抑制することができる。 According to this invention, since the depressed peripheral wall portion is formed in multiple stages, the depressed peripheral wall portion is formed by greatly stretching the synthetic resin material at the time of blow molding of the bottle.
In this way, since the depressed peripheral wall portion is formed by greatly stretching the synthetic resin material at the time of blow molding, it is possible to reduce the thickness of the depressed peripheral wall portion, and when the inside of the bottle is decompressed, the depressed peripheral wall portion The part can be easily moved upward. Thereby, the vacuum absorption performance in the bottle can be improved.
Further, as described above, since the depressed peripheral wall portion is formed by greatly stretching the synthetic resin material at the time of blow molding, it becomes possible to increase the degree of orientation crystallization in the depressed peripheral wall portion, and in a heated state. When a certain content is filled, deformation of the depressed peripheral wall portion can be suppressed.

また、このボトルのように、陥没周壁部が、上方から下方に向かうに従い漸次、拡径している場合、ブロー成形における成形性を高めることができる。 Moreover, when the depressed peripheral wall portion gradually increases in diameter from the upper side to the lower side like this bottle, the moldability in blow molding can be improved.

また上筒部が、ブロー成形時に合成樹脂材料を延伸させる方向である下方に向けて突の曲面状に形成されているので、ブロー成形時における合成樹脂材料の流動性を高め、合成樹脂材料を抵抗少なく滑らかに流動させることが可能になり、ボトルの成形性をさらに向上させることができる。 In addition, since the upper tube portion is formed in a curved surface protruding downward, which is the direction in which the synthetic resin material is stretched during blow molding, the fluidity of the synthetic resin material during blow molding is improved, and the synthetic resin material is It becomes possible to flow smoothly with less resistance, and the moldability of the bottle can be further improved.

本発明に係るボトルによれば、ボトル内の減圧吸収性能を向上させることができる。   According to the bottle according to the present invention, the reduced-pressure absorption performance in the bottle can be improved.

本発明の実施形態におけるボトルの側面図である。It is a side view of the bottle in the embodiment of the present invention. 本発明の実施形態におけるボトル底面図である。It is a bottle bottom view in the embodiment of the present invention. 図２のＡ−Ａ線である。It is the AA line of FIG. 本発明の変形例におけるボトル底面図である。It is a bottle bottom view in the modification of this invention. 図４のＢ−Ｂ線である。It is a BB line of FIG.

以下、図面を参照し、本発明の実施形態に係るボトルを説明する。
図１〜図３に示されるように、本実施形態に係るボトル１は、口部１１、肩部１２、胴部１３および底部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、この順に連設された概略構成となっている。 Hereinafter, bottles according to embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the bottle 1 according to this embodiment includes a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom portion 14, and these 11 to 14 have their central axes as a common axis. It is a schematic configuration that is arranged in this order in a state of being positioned above.

以下、前記共通軸をボトル軸Ｏといい、ボトル軸Ｏ方向に沿って前記口部側を上側、底部１４側を下側といい、また、ボトル軸Ｏに直交する方向をボトル径方向といい、ボトル軸Ｏを中心に周回する方向をボトル周方向という。
なお、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、ブロー成形されて形成され、合成樹脂材料で一体に形成されている。また、口部１１には、雄ねじ部１１ａが形成されており、図示されないキャップが螺着される。さらに、口部１１、肩部１２、胴部１３および底部１４はそれぞれ、ボトル軸Ｏに直交する横断面視形状が円形状となっている。 Hereinafter, the common axis is referred to as the bottle axis O, the mouth side is referred to as the upper side, the bottom 14 side is referred to as the lower side along the bottle axis O direction, and the direction perpendicular to the bottle axis O is referred to as the bottle radial direction. The direction of circling around the bottle axis O is referred to as the bottle circumferential direction.
The bottle 1 is formed by blow-molding a preform formed into a bottomed cylinder by injection molding, and is integrally formed of a synthetic resin material. Further, the mouth portion 11 is formed with a male screw portion 11a, and a cap (not shown) is screwed thereon. Further, each of the mouth part 11, the shoulder part 12, the body part 13, and the bottom part 14 has a circular shape in a cross-sectional view orthogonal to the bottle axis O.

肩部１２と胴部１３との接続部分には、第１環状凹溝１６が全周に亘って連続して形成されている。
胴部１３は筒状に形成され、ボトル軸Ｏ方向の両端部同士の間は、これら両端部より小径に形成されている。胴部１３には、ボトル軸Ｏ方向に間隔をあけて複数の第２環状凹溝１５が全周に亘って連続して形成されている。 A first annular groove 16 is continuously formed over the entire circumference at the connecting portion between the shoulder portion 12 and the body portion 13.
The trunk | drum 13 is formed in a cylindrical shape, and between both ends of the bottle axis | shaft O direction is formed in a smaller diameter than these both ends. A plurality of second annular grooves 15 are continuously formed in the body portion 13 over the entire circumference at intervals in the bottle axis O direction.

胴部１３と底部１４との接続部分には、第３環状凹溝２０が全周に亘って連続して形成されている。
底部１４は、上端開口部が胴部１３の下端開口部に接続されたヒール部１７と、ヒール部１７の下端開口部を閉塞し、かつ外周縁部が接地部１８とされた底壁部１９と、を備えるカップ状に形成されている。 A third annular groove 20 is continuously formed over the entire circumference at the connection portion between the body portion 13 and the bottom portion 14.
The bottom part 14 includes a heel part 17 whose upper end opening is connected to the lower end opening part of the body part 13, and a bottom wall part 19 which closes the lower end opening part of the heel part 17 and whose outer peripheral edge part is a grounding part 18. Are formed in a cup shape.

ヒール部１７のうち、接地部１８にボトル径方向の外側から連なるヒール下端部２７は、該ヒール下端部２７に上方から連なる上ヒール部２８より小径に形成されており、ヒール下端部２７と上ヒール部２８との連結部分２９は、上方から下方に向かうに従い漸次縮径されている。上ヒール部２８は、胴部１３のボトル軸Ｏ方向の両端部とともに、ボトル１の最大外径部となっており、この上ヒール部２８には、第３環状凹溝２０と同じ深さの第４環状凹溝３１が全周に亘って連続して形成されている。   Of the heel portion 17, a heel lower end portion 27 connected to the ground contact portion 18 from the outside in the bottle radial direction is formed to have a smaller diameter than the upper heel portion 28 connected to the heel lower end portion 27 from above. The connecting portion 29 with the heel portion 28 is gradually reduced in diameter from the upper side to the lower side. The upper heel portion 28 is the maximum outer diameter portion of the bottle 1 together with both end portions of the body portion 13 in the bottle axis O direction. The upper heel portion 28 has the same depth as the third annular groove 20. A fourth annular groove 31 is formed continuously over the entire circumference.

底壁部１９は、図３に示されるように、接地部１８にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部２１と、立ち上がり周壁部２１の上端部からボトル径方向の内側に向けて突出する環状の可動壁部２２と、可動壁部２２のボトル径方向の内端部から上方に向けて延びる陥没周壁部２３と、陥没周壁部２３の上端開口部を閉塞する閉塞壁部２４と、を備えている。   As shown in FIG. 3, the bottom wall portion 19 is connected to the ground contact portion 18 from the inside in the bottle radial direction and extends upward, and from the upper end portion of the rising peripheral wall portion 21 to the inside in the bottle radial direction. An annular movable wall portion 22 projecting toward the top, a depressed peripheral wall portion 23 extending upward from an inner end portion of the movable wall portion 22 in the bottle radial direction, and a closed wall portion closing the upper end opening of the depressed peripheral wall portion 23 24.

立ち上がり周壁部２１は、下方から上方に向かうに従い漸次縮径している。
可動壁部２２は、下方に向けて突の曲面状に形成されるとともに、ボトル径方向の外側から内側に向かうに従い漸次下方に向けて延在している。この可動壁部２２と立ち上がり周壁部２１とは上方に向けて突の曲面部２５を介して連結されている。そして、可動壁部２２は、陥没周壁部２３を上方に向けて移動させるように、曲面部（立ち上がり周壁部２１との接続部分）２５を中心に回動自在となっている。 The rising peripheral wall portion 21 is gradually reduced in diameter from the lower side toward the upper side.
The movable wall portion 22 is formed in a curved shape protruding downward, and gradually extends downward from the outside in the bottle radial direction toward the inside. The movable wall portion 22 and the rising peripheral wall portion 21 are connected via a curved surface portion 25 that protrudes upward. The movable wall portion 22 is rotatable about a curved surface portion (connection portion with the rising peripheral wall portion 21) 25 so that the depressed peripheral wall portion 23 is moved upward.

陥没周壁部２３は、ボトル軸Ｏと同軸に配設され、上方から下方に向かうに従い漸次、拡径するとともに多段に形成されている。この陥没周壁部２３は、可動壁部２２のボトル径方向の内端部から上方に向かうに従い漸次、縮径された下筒部２３ａと、閉塞壁部２４の外周縁部から下方に向かうに従い漸次、拡径されるとともに下方に向けて突の曲面状に形成された上筒部２３ｂと、これらの両筒部２３ａ、２３ｂを連結する段部２３ｃと、を備えており、２段筒状に形成されている。
下筒部２３ａは、可動壁部２２のボトル径方向の内端部に、下方に向けて突の曲面部２６を介して連結されている。また下筒部２３ａは、横断面視円形状に形成されている。
段部２３ｃは、立ち上がり周壁部２１の上端部よりも上方に位置している。 The depressed peripheral wall portion 23 is disposed coaxially with the bottle axis O, and gradually increases in diameter from the upper side toward the lower side and is formed in multiple stages. The depressed peripheral wall portion 23 gradually increases from the inner end portion in the bottle radial direction of the movable wall portion 22 toward the upper side, and gradually decreases toward the lower side from the outer peripheral edge portion of the closed wall portion 24 and the closed peripheral wall portion 24. And an upper cylinder part 23b formed in a curved shape protruding downward and projecting downward, and a step part 23c for connecting both the cylinder parts 23a and 23b. Is formed.
The lower cylinder part 23a is connected to the inner end part of the movable wall part 22 in the bottle radial direction via a curved surface part 26 protruding downward. Moreover, the lower cylinder part 23a is formed in the cross-sectional view circular shape.
The step portion 23 c is located above the upper end portion of the rising peripheral wall portion 21.

上筒部２３ｂには、ボトル径方向の内側に向けて張り出す張出部２３ｄが形成されている。張出部２３ｄは、上筒部２３ｂの上端部を除くボトル軸Ｏ方向のほぼ全長にわたって形成されており、図２に示されるように、ボトル周方向に複数連ねられて形成されている。なお図示の例では、ボトル周方向に隣り合う張出部２３ｄ同士は、ボトル周方向に間隔をあけて配置されている。   The upper tube portion 23b is formed with an overhang portion 23d that protrudes toward the inside in the bottle radial direction. The overhang portion 23d is formed over substantially the entire length in the bottle axis O direction excluding the upper end portion of the upper tube portion 23b, and a plurality of overhang portions 23d are formed in the bottle circumferential direction as shown in FIG. In the illustrated example, the overhang portions 23d adjacent to each other in the bottle circumferential direction are arranged with an interval in the bottle circumferential direction.

そして、上筒部２３ｂの横断面視形状は、張出部２３ｄが形成されることにより、下方から上方に向かうに従い、多角形状（図示の例では略正三角形状）から円形状に変形していて、上筒部２３ｂの上端部における横断面視形状は、円形状となっている。上筒部２３ｂのうち、横断面視形状が多角形状とされた部分では、張出部２３ｄが多角形状の辺部とされ、ボトル周方向で隣り合う張出部２３ｄ同士の間に位置する間部分２３ｅが、多角形状の角部となっている。   And the cross-sectional view shape of the upper cylinder part 23b is deform | transforming from polygonal shape (in the example of illustration into a substantially equilateral triangle shape) to circular shape as it goes upwards from the downward direction by forming the overhang | projection part 23d. And the cross-sectional view shape in the upper end part of the upper cylinder part 23b is circular. In the portion of the upper tube portion 23b where the cross-sectional view shape is a polygonal shape, the overhanging portion 23d is a polygonal side portion and is located between the overhanging portions 23d adjacent in the bottle circumferential direction. The portion 23e is a polygonal corner.

また図２に示されるように、上筒部２３ｂの横断面視において、張出部２３ｄおよび前記間部分２３ｅはそれぞれ、径方向の外側に向けて突の曲面状に形成されている。そして、張出部２３ｄの横断面視形状における曲率半径は、前記間部分２３ｅの横断面視形状における曲率半径よりも大きくなっている。   Further, as shown in FIG. 2, in the cross-sectional view of the upper tube portion 23 b, the overhang portion 23 d and the intermediate portion 23 e are each formed in a curved surface shape that protrudes outward in the radial direction. And the curvature radius in the cross-sectional view shape of the overhang | projection part 23d is larger than the curvature radius in the cross-sectional view shape of the said part 23e.

さらに図３に示されるように、上筒部２３ｂの縦断面視において、張出部２３ｄおよび前記間部分２３ｅはそれぞれ、径方向の内側に向けて突の曲面状に形成されている。そして、張出部２３ｄの縦断面視形状における曲率半径は、前記間部分２３ｅの縦断面視形状における曲率半径よりも小さくなっている。
閉塞壁部２４は、ボトル軸Ｏと同軸に配置されるとともに円板状に形成され、陥没周壁部２３および閉塞壁部２４は全体で有頂筒状をなしている。 Further, as shown in FIG. 3, in the longitudinal sectional view of the upper tube portion 23b, the projecting portion 23d and the intermediate portion 23e are each formed in a curved shape protruding toward the inside in the radial direction. And the curvature radius in the longitudinal cross-sectional view shape of the overhang | projection part 23d is smaller than the curvature radius in the longitudinal cross-sectional view shape of the said part 23e.
The blocking wall portion 24 is disposed coaxially with the bottle axis O and is formed in a disk shape, and the depressed peripheral wall portion 23 and the blocking wall portion 24 are formed in a top tube shape as a whole.

このように構成されたボトル１内が減圧すると、底壁部１９の曲面部２５を中心にして可動壁部２２が上方に向かって回動することで、可動壁部２２は、陥没周壁部２３を上方に向けて持ち上げるように移動する。すなわち、減圧時にボトル１の底壁部１９を積極的に変形させることで、胴部１３等の変形を抑えて、ボトル１の内圧変化（減圧）を吸収することができる。   When the inside of the bottle 1 configured in this manner is depressurized, the movable wall portion 22 is rotated upward about the curved surface portion 25 of the bottom wall portion 19, so that the movable wall portion 22 is a depressed peripheral wall portion 23. Move to lift upward. That is, by actively deforming the bottom wall portion 19 of the bottle 1 during decompression, it is possible to suppress the deformation of the body portion 13 and the like and to absorb changes in the internal pressure (decompression) of the bottle 1.

以上説明したように、本実施形態に係るボトル１によれば、陥没周壁部２３が、上方から下方に向かうに従い漸次、拡径するとともに多段に形成されているので、陥没周壁部２３の表面積を増加させることができる。そのため、この陥没周壁部２３は、このボトル１のブロー成形時に、合成樹脂材料（プリフォーム）が大きく延伸させられることで形成されることとなる。   As described above, according to the bottle 1 according to the present embodiment, since the depressed peripheral wall portion 23 gradually increases in diameter from the upper side toward the lower side and is formed in multiple stages, the surface area of the depressed peripheral wall portion 23 is reduced. Can be increased. Therefore, the depressed peripheral wall portion 23 is formed by greatly stretching the synthetic resin material (preform) when the bottle 1 is blow-molded.

このように、ブロー成形時に合成樹脂材料が大きく延伸させられることで陥没周壁部２３が形成されるので、陥没周壁部２３の薄肉化を図ることが可能になり、ボトル１内が減圧したときに、陥没周壁部２３を上方に向けて移動させ易くすることができる。これにより、ボトル１内の減圧吸収性能を向上させることができる。   As described above, the synthetic resin material is greatly stretched at the time of blow molding, so that the depressed peripheral wall portion 23 is formed. Therefore, it is possible to reduce the thickness of the depressed peripheral wall portion 23, and when the inside of the bottle 1 is depressurized. The depressed peripheral wall portion 23 can be easily moved upward. Thereby, the vacuum absorption performance in the bottle 1 can be improved.

また前述のように、ブロー成形時に合成樹脂材料が大きく延伸させられることで陥没周壁部２３が形成されるので、陥没周壁部２３における配向結晶化の程度を高めることが可能になり、加熱された状態にある内容物が充填されたときに、陥没周壁部が変形するのを抑制することができる。   Moreover, as described above, the synthetic resin material is greatly stretched during blow molding to form the depressed peripheral wall portion 23. Therefore, the degree of orientation crystallization in the depressed peripheral wall portion 23 can be increased and heated. When the content in the state is filled, it is possible to suppress the depressed peripheral wall portion from being deformed.

また、陥没周壁部２３が、上方から下方に向かうに従い漸次、拡径していているので、ブロー成形における成形性を高めることができる。
さらに、上筒部２３ｂが、ブロー成形時に合成樹脂材料を延伸させる方向である下方に向けて突の曲面状に形成されているので、ブロー成形時における合成樹脂材料の流動性を高め、合成樹脂材料を抵抗少なく滑らかに流動させることが可能になり、ボトル１の成形性をさらに向上させることができる。 Moreover, since the depression surrounding wall part 23 is gradually diameter-expanding as it goes downward from the upper direction, the moldability in blow molding can be improved.
Further, since the upper cylinder portion 23b is formed in a curved surface protruding downward, which is the direction in which the synthetic resin material is stretched during blow molding, the fluidity of the synthetic resin material during blow molding is improved, and the synthetic resin The material can be smoothly flowed with little resistance, and the moldability of the bottle 1 can be further improved.

なお、本発明の技術的範囲は前記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。   The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

例えば、図４および図５に示すボトル４０のように、可動壁部２２に、複数のリブ４１がボトル軸Ｏを中心に放射状に配設されていても良い。なおリブ４１は、上方に向けて曲面状に窪んだ複数の凹部４１ａがボトル径方向に沿って断続的に配設されてなる。
さらに前記ボトル４０のように、立ち上がり周壁部２１に凹凸部４２が全周に亘って形成されていても良い。なお凹凸部４２は、ボトル径方向の内側に向けて突の曲面状に形成された複数の突部４２ａが、ボトル周方向に間隔をあけて配設されてなる。 For example, like the bottle 40 shown in FIGS. 4 and 5, a plurality of ribs 41 may be radially arranged around the bottle axis O on the movable wall portion 22. The rib 41 is formed by intermittently arranging a plurality of concave portions 41a recessed in a curved shape upward.
Further, as in the case of the bottle 40, an uneven portion 42 may be formed on the rising peripheral wall portion 21 over the entire circumference. In addition, the uneven | corrugated | grooved part 42 is arrange | positioned at intervals in the bottle peripheral direction by the some protrusion 42a formed in the curved surface shape which protruded toward the inner side of the bottle radial direction.

また、立ち上がり周壁部２１は、例えばボトル軸Ｏ方向に沿って平行に延在させる等、適宜変更してもよい。
また、可動壁部２２は、例えばボトル径方向に沿って平行に突出させたり、上方に傾斜させたり等、適宜変更してもよい。 The rising peripheral wall portion 21 may be appropriately changed, for example, extending in parallel along the bottle axis O direction.
Further, the movable wall portion 22 may be appropriately changed, for example, by projecting in parallel along the bottle radial direction, or by inclining upward.

また前記実施形態では、上筒部２３ｂが下方に向けて突の曲面状に形成されているものとしたが、本発明の参考例では、これに限られるものではない。
さらに前記実施形態では、ボトル周方向に隣り合う張出部２３ｄ同士が、ボトル周方向に間隔をあけて配置されているものとしたが、これに限られるものではなく、例えば、前記張出部２３ｄ同士が、ボトル周方向に間隔をあけず配置され、互いに直接連結されていても良い。この場合、上筒部２３ｂのうち、張出部２３ｄが配設された部分における横断面視形状が円形状となっていても良く、上筒部２３ｂの横断面視形状が、ボトル軸Ｏ方向の全長にわたって円形状となっていても良い。
さらにまた前記張出部２３ｄはなくても良い。 Moreover, in the said embodiment, although the upper cylinder part 23b shall be formed in the curved surface shape which protruded below, in the reference example of this invention, it is not restricted to this.
Furthermore, in the said embodiment, although the overhang | projection parts 23d adjacent to the bottle circumferential direction shall be arrange | positioned at intervals in the bottle circumferential direction, it is not restricted to this, For example, the said overhang | projection part 23d may be arrange | positioned without a space | interval in the bottle circumferential direction, and may mutually be connected directly. In this case, the cross-sectional view shape in the part in which the overhang | projection part 23d is arrange | positioned among the upper cylinder parts 23b may be circular, and the cross-sectional view shape of the upper cylinder part 23b is a bottle axis | shaft O direction. It may be circular over the entire length.
Furthermore, the protruding portion 23d may not be provided.

さらに前記実施形態では、陥没周壁部２３は、上方から下方に向かうに従い漸次、拡径するものとしたが、本発明の参考例では、多段に形成されていれば、これに限られるものではない。例えば、陥没周壁部２３は、下筒部２３ａおよび上筒部２３ｂがボトル軸Ｏ方向に沿って延在し、段部２３ｃがボトル径方向に沿って延在するリング状に形成されてなる構成であっても良い。
さらにまた、前記実施形態では、陥没周壁部２３は、２段筒状に形成されているものとしたが、３段以上の筒状に形成されていても良い。 Furthermore, in the said embodiment, although the depression surrounding wall part 23 shall be gradually diameter-expanded as it goes below from the upper direction, in the reference example of this invention, if it is formed in multiple steps, it will not be restricted to this. . For example, the depressed peripheral wall portion 23 is formed in a ring shape in which the lower tube portion 23a and the upper tube portion 23b extend along the bottle axis O direction, and the step portion 23c extends along the bottle radial direction. It may be.
Furthermore, in the above embodiment, the depressed peripheral wall portion 23 is formed in a two-stage cylindrical shape, but may be formed in a three-stage or more cylindrical shape.

また、ボトル１を形成する合成樹脂材料は、例えばポリエチレンテレフタレートや、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や積層構成等、適宜変更してもよい。
また、前記実施形態では、肩部１２、胴部１３および底部１４の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。 Further, the synthetic resin material forming the bottle 1 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material or a laminated structure thereof.
Moreover, in the said embodiment, although the cross-sectional view shape orthogonal to each bottle axis | shaft O of the shoulder part 12, the trunk | drum 13, and the bottom part 14 was circular shape, it changes suitably, for example not only to this but polygonal shape May be.

その他、本発明の趣旨に逸脱しない範囲で、前記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、前記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 embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

１、４０ ボトル
１４ 底部
１８ 接地部
１９ 底壁部
２１ 立ち上がり周壁部
２２ 可動壁部
２３ 陥没周壁部
２３ａ 下筒部
２３ｂ 上筒部
２３ｃ 段部
２４ 閉塞壁部
２５ 曲面部（立ち上がり周壁部との接続部分） DESCRIPTION OF SYMBOLS 1, 40 Bottle 14 Bottom part 18 Grounding part 19 Bottom wall part 21 Standing peripheral wall part 22 Movable wall part 23 Depressed peripheral wall part 23a Lower cylindrical part 23b Upper cylindrical part 23c Step part 24 Blocking wall part 25 Curved part (Connection with rising peripheral wall part) portion)

Claims (1)

ブロー成形により合成樹脂材料で有底筒状に形成されたボトルであって、
底部の底壁部は、
外周縁部に位置する接地部と、
該接地部にボトル径方向の内側から連なり上方に向けて延びる立ち上がり周壁部と、
該立ち上がり周壁部の上端部からボトル径方向の内側に向けて突出する環状の可動壁部と、
該可動壁部のボトル径方向の内端部から上方に向けて延びる陥没周壁部と、
該陥没周壁部の上端開口部を閉塞する閉塞壁部と、を備え、
前記可動壁部は、前記陥没周壁部を上方に向けて移動させるように、前記立ち上がり周壁部との接続部分を中心に回動自在に配設され、
前記陥没周壁部は多段に形成され、上方から下方に向かうに従い漸次、拡径し、
前記陥没周壁部は、前記可動壁部のボトル径方向の内端部から上方に向かうに従い漸次、縮径された下筒部と、前記閉塞壁部の外周縁部から下方に向かうに従い漸次、拡径された上筒部と、これらの両筒部を連結する段部と、を備え、
前記上筒部は、下方に向けて突の曲面状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 into a bottomed cylindrical shape by blow molding,
The bottom wall of the bottom
A grounding portion located at the outer periphery,
A rising peripheral wall portion extending from the inside in the bottle radial direction to the grounding portion and extending upward;
An annular movable wall portion projecting inward from the upper end portion of the rising peripheral wall portion in the bottle radial direction;
A depressed peripheral wall portion extending upward from an inner end portion of the movable wall portion in the bottle radial direction;
A closing wall portion closing the upper end opening of the depressed peripheral wall portion ,
The movable wall portion is rotatably arranged around a connection portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward.
The depressed peripheral wall portion is formed in multiple stages, gradually increasing in diameter from the upper side to the lower side,
The depressed peripheral wall portion gradually increases from the inner end portion of the movable wall portion in the bottle radial direction toward the upper side, and gradually decreases as the diameter of the lower cylinder portion decreases and from the outer peripheral edge portion of the blocking wall portion to the lower side. A diameter upper cylinder part, and a step part connecting both the cylinder parts,
The said upper cylinder part is formed in the curved surface shape which protruded below, The bottle characterized by the above-mentioned.
JP2010239946A 2010-10-26 2010-10-26 Bottle Active JP5568439B2 (en)

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KR1020137011184A KR101826117B1 (en) 2010-10-26 2011-10-21 Bottle
US13/881,273 US9242762B2 (en) 2010-10-26 2011-10-21 Bottle
PCT/JP2011/074302 WO2012057026A1 (en) 2010-10-26 2011-10-21 Bottle
EP11836160.9A EP2634106B1 (en) 2010-10-26 2011-10-21 Bottle
CA2815782A CA2815782C (en) 2010-10-26 2011-10-21 Bottle
CN201180051398.6A CN103180213B (en) 2010-10-26 2011-10-21 Bottle
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