JP5581000B2 - Bottle - Google Patents

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JP5581000B2
JP5581000B2 JP2009087444A JP2009087444A JP5581000B2 JP 5581000 B2 JP5581000 B2 JP 5581000B2 JP 2009087444 A JP2009087444 A JP 2009087444A JP 2009087444 A JP2009087444 A JP 2009087444A JP 5581000 B2 JP5581000 B2 JP 5581000B2
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bottle
wall portion
radial direction
central
reinforcing wall
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JP2010235183A (en
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正昭 佐々木
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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、合成樹脂材料で形成され、例えば炭酸飲料などの内容物が充填されるボトル（耐圧用ボトル、耐熱圧用ボトル）に関する。   The present invention relates to a bottle (pressure-resistant bottle, heat-resistant pressure bottle) formed of a synthetic resin material and filled with contents such as carbonated beverages.

この種のボトルとして、例えば下記特許文献１に示されるように、筒状の口部、肩部および胴部と、有底筒状の底部と、が合成樹脂材料で一体に形成され、底部が、中央部に配置されるとともにボトル軸が直交する中央壁部と、該中央壁部の外周縁と胴部とを連結する連結周壁部と、を備える構成が知られている。この連結周壁部には、ボトル軸回りに沿うボトル周方向に間隔をあけて複数の縦凹条部が形成されるとともに、該連結周壁部においてボトル周方向で隣り合う縦凹条部同士の間に位置する脚部には、中央壁部よりもボトル軸方向の外側に向けて突出する接地突部が備えられている。また、このボトルは、脚部の接地突部を接地させることにより自立させることができる。   As this type of bottle, for example, as shown in Patent Document 1 below, a cylindrical mouth portion, a shoulder portion and a trunk portion, and a bottomed cylindrical bottom portion are integrally formed of a synthetic resin material, and the bottom portion is A configuration is known that includes a central wall portion that is disposed in the central portion and that has a bottle axis orthogonal thereto, and a connecting peripheral wall portion that connects the outer peripheral edge of the central wall portion and the body portion. The connecting peripheral wall portion is formed with a plurality of vertical concave strip portions at intervals in the bottle peripheral direction along the bottle axis, and between the vertical concave strip portions adjacent in the bottle peripheral direction at the connecting peripheral wall portion. The leg portion located at is provided with a grounding protrusion that protrudes outward from the central wall portion in the bottle axial direction. Moreover, this bottle can be made to stand by making the grounding protrusion of the leg ground.

特開平７−２６７２３５号公報JP-A-7-267235

しかしながら、前記従来のボトルでは、その製造過程における前記中央壁部の延伸量が小さいこと等から、熱水シャワーによる殺菌工程などで生じるボトルの内圧の上昇に起因して底部のうち中央壁部が他の部分と比べて大きく変形し、接地突部よりもボトル軸方向の外側に膨出し、ボトルを自立させることができなくなるおそれがあった。   However, in the conventional bottle, since the amount of stretching of the central wall portion in the manufacturing process is small, the central wall portion of the bottom portion is caused by an increase in the internal pressure of the bottle caused by a sterilization process by hot water shower. There is a possibility that the bottle will not be able to stand by itself because it is greatly deformed compared to other parts, bulges outward in the bottle axial direction from the grounding protrusion.

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、底部における中央壁部の変形を抑制す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 suppress a deformation | transformation of the center wall part in a bottom part.

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、筒状の口部、肩部および胴部と、有底筒状の底部と、が合成樹脂材料で一体に形成され、前記底部は、中央部に配置されるとともにボトル軸が直交する中央壁部と、該中央壁部の外周縁と胴部とを連結する連結周壁部と、を備え、前記連結周壁部には、ボトル軸回りに沿うボトル周方向に間隔をあけて複数の縦凹条部が形成されるとともに、該連結周壁部においてボトル周方向で隣り合う縦凹条部同士の間に位置する脚部に、前記中央壁部よりもボトル軸方向の外側に向けて突出する接地突部が備えられたボトルであって、前記縦凹条部および前記脚部は、それぞれ偶数個ずつ形成され、前記底部の内面に、前記中央壁部と前記連結周壁部とを連結する補強壁部が突設され、前記補強壁部は、ボトル軸をボトル径方向で挟んで互いに反対に位置する一対の縦凹条部同士を連結し、前記補強壁部は、前記底部の平面視においてボトル径方向に沿うように直線状に延在し、前記補強壁部においてボトル径方向の外側に位置する両側端部の上端は、前記縦凹条部の上端部に連結されて前記胴部よりも下側に位置し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.
In the bottle according to the present invention, a cylindrical mouth portion, a shoulder portion and a trunk portion, and a bottomed cylindrical bottom portion are integrally formed of a synthetic resin material, and the bottom portion is disposed in the center portion and the bottle. A central wall having an orthogonal axis, and a connecting peripheral wall connecting the outer peripheral edge of the central wall and the body, and the connecting peripheral wall is spaced in the bottle peripheral direction around the bottle axis. A plurality of vertical concave strip portions are formed, and the leg portions located between the vertical concave strip portions adjacent in the circumferential direction of the bottle in the connecting peripheral wall portion are arranged outside the central wall portion in the bottle axial direction. A bottle provided with a grounding protrusion projecting toward the bottom, wherein the vertical recesses and the legs are each formed in an even number , and on the inner surface of the bottom, the central wall and the connecting peripheral wall reinforcing wall portion for connecting is projected, said reinforcing wall portion, the bottle radial bottle axis A pair of vertical concave strips positioned opposite to each other are connected to each other, and the reinforcing wall portion extends linearly along the bottle radial direction in a plan view of the bottom portion, and the bottle in the reinforcing wall portion The upper ends of both side end portions positioned on the outer side in the radial direction are connected to the upper end portions of the vertical concave strip portions and are positioned below the trunk portion .

本発明に係るボトルによれば、底部の内面に、中央壁部と連結周壁部とを連結する補強壁部が突設されているので、ボトルの内圧の上昇に伴い中央壁部に加えられる力を、補強壁部を介して連結周壁部に伝達させて受け止めさせることが可能となり、中央壁部がボトル軸方向の外側に向けて変形するのを抑制することができる。
さらに、補強壁部が、一対の縦凹条部同士を連結するように設けられていることから、例えば補強壁部が１つの縦凹条部と中央壁部とを連結する場合に比べて、中央壁部に加えられる力を、補強壁部を介して連結周壁部のなかでより広い部分にわたって伝達させることが可能となり、補強壁部による中央壁部の補強をより一層強固にすることができる。
また、前記一対の縦凹条部が、ボトル軸をボトル径方向で挟んで互いに反対に位置しているので、補強壁部をボトル径方向に直線状に延在させることが可能となり、簡素な構成で中央壁部を全域にわたって偏り少なく補強することができる。 According to the bottle of the present invention, since the reinforcing wall portion that connects the central wall portion and the connecting peripheral wall portion protrudes on the inner surface of the bottom portion, the force applied to the central wall portion as the internal pressure of the bottle increases. Can be transmitted to the connecting peripheral wall portion via the reinforcing wall portion to be received, and deformation of the central wall portion toward the outside in the bottle axial direction can be suppressed.
Furthermore, since the reinforcing wall portion is provided so as to connect the pair of vertical concave stripe portions, for example, compared to a case where the reinforcing wall portion connects one vertical concave stripe portion and the central wall portion, The force applied to the central wall portion can be transmitted over a wider portion of the connecting peripheral wall portion via the reinforcing wall portion, and the reinforcement of the central wall portion by the reinforcing wall portion can be further strengthened. .
In addition, since the pair of vertical concave strips are positioned opposite to each other with the bottle shaft sandwiched in the bottle radial direction, the reinforcing wall portion can be extended linearly in the bottle radial direction. With the configuration, the central wall portion can be reinforced with less bias over the entire area.

また、前記補強壁部の両側端部の上端は、ボトル径方向の内側から外側に向かうに従って漸次上側に向かうとともに、この補強壁部の平面視で下側に向けて窪む凹曲線状に形成され、前記補強壁部において両側端部同士の間に位置する中間部分の上端は、ボトル径方向に沿う直線状に形成されていても良い。 Further, the upper ends of both side end portions of the reinforcing wall portion are formed in a concave curve shape that gradually goes upward as it goes from the inner side to the outer side in the bottle radial direction, and is recessed downward in a plan view of the reinforcing wall portion. And the upper end of the intermediate part located between both edge parts in the said reinforcement wall part may be formed in linear form along a bottle radial direction .

本発明に係るボトルによれば、底部における中央壁部の変形を抑制することができる。   According to the bottle according to the present invention, deformation of the central wall portion at the bottom can be suppressed.

本発明の一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 one Embodiment of this invention. 図１に示すボトルの底面図である。It is a bottom view of the bottle shown in FIG. 図２に示すＡ−Ａ断面矢視図である。It is an AA cross-sectional arrow view shown in FIG.

以下、本発明の一実施形態に係るボトルを、図１〜図３を参照して説明する。
図１に示すように、ボトル１０は、筒状の口部１１、肩部１２および胴部１３と、有底筒状の底部１４と、が合成樹脂材料で一体に形成されている。このボトル１０は、例えば二軸延伸ブロー成形により形成されたものである。また、前記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を採用することができる。
なお、図示の例では、これらの口部１１、肩部１２、胴部１３および底部１４は、それぞれの中心軸線が共通軸上に位置された状態で配設されている。以下、この共通軸をボトル軸Ｏといい、ボトル軸Ｏ方向に沿った口部１１側を上側、底部１４側を下側いう。また、ボトル軸Ｏに直交する方向を単にボトル径方向といい、ボトル軸Ｏ回りに沿う方向をボトル周方向という。 Hereinafter, a bottle according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the bottle 10 has a cylindrical mouth portion 11, a shoulder portion 12, a body portion 13, and a bottomed cylindrical bottom portion 14 that are integrally formed of a synthetic resin material. This bottle 10 is formed by biaxial stretch blow molding, for example. As the synthetic resin material, for example, polyethylene terephthalate or the like can be employed.
In the illustrated example, the mouth portion 11, the shoulder portion 12, the trunk portion 13, and the bottom portion 14 are arranged with their respective central axes positioned on a common axis. Hereinafter, this common axis is referred to as the bottle axis O, the mouth 11 side along the bottle axis O direction is referred to as the upper side, and the bottom 14 side is referred to as the lower side. A direction perpendicular to the bottle axis O is simply referred to as a bottle radial direction, and a direction along the bottle axis O is referred to as a bottle circumferential direction.

口部１１の外周面には雄ネジが形成されており、この雄ネジに図示しないキャップが着脱可能に螺着されるようになっている。
また、図１〜図３に示すように、底部１４は、中央部に配置されるとともにボトル軸Ｏが直交する中央壁部１５と、該中央壁部１５の外周縁と胴部１３とを連結する連結周壁部１６と、を備えている。図２に示すように、図示の例では、中央壁部１５は、底部１４の平面視において円形状に形成されるとともに、ボトル軸Ｏと同軸に配置されている。 A male screw is formed on the outer peripheral surface of the mouth portion 11, and a cap (not shown) is detachably screwed onto the male screw.
Moreover, as shown in FIGS. 1-3, the bottom part 14 connects the center wall part 15 which the bottle axis | shaft O orthogonally crosses with the outer periphery of the center wall part 15, and the trunk | drum 13 while being arrange | positioned in the center part And a connecting peripheral wall portion 16. As shown in FIG. 2, in the illustrated example, the central wall portion 15 is formed in a circular shape in a plan view of the bottom portion 14 and is disposed coaxially with the bottle shaft O.

図２および図３に示すように、連結周壁部１６には、ボトル周方向に間隔をあけて複数の縦凹条部１７が形成されるとともに、該連結周壁部１６においてボトル周方向で隣り合う縦凹条部１７同士の間に位置する脚部１８に、中央壁部１５よりも下側（ボトル軸Ｏ方向の外側）に向けて突出する接地突部１９が備えられており、このボトル１０は、いわゆるペタロイド形状に形成されている。図２に示すように、本実施形態では、縦凹条部１７および脚部１８は、それぞれ偶数個ずつ形成されている。図示の例では、縦凹条部１７および脚部１８は、それぞれ４個ずつ形成されている。   As shown in FIGS. 2 and 3, the connecting peripheral wall 16 is formed with a plurality of vertical concave strips 17 at intervals in the bottle peripheral direction, and adjacent to the connecting peripheral wall 16 in the bottle peripheral direction. A leg 18 positioned between the vertical concave strips 17 is provided with a grounding projection 19 projecting downward from the central wall 15 (outside in the bottle axis O direction). Is formed in a so-called petaloid shape. As shown in FIG. 2, in the present embodiment, an even number of vertical concave stripe portions 17 and leg portions 18 are formed. In the example shown in the figure, each of the vertical concave stripe portion 17 and the leg portion 18 is formed by four pieces.

図３に示すように、縦凹条部１７は、ボトル径方向の内側から外側に向かうに従って漸次上側に向かうとともに、このボトル１０の縦断面視で下側に向けて突となる曲面状に形成されている。
また、図１〜図３に示すように、脚部１８は、縦凹条部１７よりも下側およびボトル径方向の外側の双方に膨出されており、その下端部が前記接地突部１９となっている。また、図１および図２に示すように、脚部１８において、接地突部１９と胴部１３とを連結するとともにボトル径方向の外側を向く壁部である脚側壁部２０は、口部１１、肩部１２および胴部１３において最も外径が大きい最外部分の外周面とボトル径方向の位置が一致もしくは前記最外部分の外周面よりもボトル径方向の内側に位置している。 As shown in FIG. 3, the longitudinal groove portion 17 is formed in a curved surface shape that gradually goes upward as it goes from the inner side to the outer side in the bottle radial direction, and protrudes downward in a vertical sectional view of the bottle 10. Has been.
As shown in FIGS. 1 to 3, the leg portion 18 bulges both below the longitudinally concave strip portion 17 and outside in the bottle radial direction, and the lower end portion of the leg portion 18 is the grounding protrusion 19. It has become. As shown in FIGS. 1 and 2, in the leg portion 18, the leg side wall portion 20, which is a wall portion that connects the grounding protrusion 19 and the trunk portion 13 and faces the outside in the bottle radial direction, is formed in the mouth portion 11. In the shoulder portion 12 and the body portion 13, the outermost portion of the outermost portion having the largest outer diameter coincides with the position in the bottle radial direction or is located on the inner side of the outermost portion of the outermost portion in the bottle radial direction.

そして、本実施形態では、図２および図３に示すように、底部１４の内面に、中央壁部１５と連結周壁部１６とを連結する補強壁部２１が突設されている。この補強壁部２１は、中央壁部１５と縦凹条部１７とを連結している。また、補強壁部２１は、ボトル軸Ｏをボトル径方向で挟んで互いに反対に位置する一対の縦凹条部１７同士を連結している。
図２に示すように、図示の例では、補強壁部２１は、ボトル径方向に沿うように前記平面視直線状に延在している。また、補強壁部２１は、前記一対の縦凹条部１７それぞれにおけるボトル周方向の中央部分同士を互いに連結し、かつボトル径方向に沿って底部１４の全域にわたって延在している。このように補強壁部２１が形成されることで、底部１４において、補強壁部２１を挟んだ一方側部分１４ａの形状と他方側部分１４ｂの形状とが同一形状になる。 In the present embodiment, as shown in FIGS. 2 and 3, a reinforcing wall portion 21 that connects the central wall portion 15 and the connecting peripheral wall portion 16 protrudes from the inner surface of the bottom portion 14. The reinforcing wall portion 21 connects the central wall portion 15 and the longitudinal groove portion 17. In addition, the reinforcing wall portion 21 connects a pair of longitudinal concave portions 17 positioned opposite to each other with the bottle axis O sandwiched in the bottle radial direction.
As shown in FIG. 2, in the illustrated example, the reinforcing wall portion 21 extends linearly in the plan view so as to be along the bottle radial direction. Further, the reinforcing wall portion 21 connects the central portions in the bottle circumferential direction of each of the pair of vertical concave ridge portions 17 to each other, and extends over the entire area of the bottom portion 14 along the bottle radial direction. By forming the reinforcing wall portion 21 in this way, the shape of the one side portion 14a and the shape of the other side portion 14b sandwiching the reinforcing wall portion 21 becomes the same shape at the bottom portion 14.

また、図３に示すように、補強壁部２１においてボトル径方向の外側に位置する両側端部２１ａは、それぞれの上端が、ボトル径方向の内側から外側に向かうに従って漸次上側に向かうとともに、この補強壁部２１の平面視で下側に向けて窪む凹曲線状に形成されている。また、補強壁部２１の両側端部２１ａの上端は、連結周壁部１６（縦凹条部１７）の上端部に連結されている。また、補強壁部２１において両側端部２１ａ同士の間に位置する中間部分の上端は、ボトル径方向に沿う直線状に形成されている。このように形成された補強壁部２１は、ボトル軸Ｏを基準に線対称に形成されるともに、その平面視形状が半月形状となっている。   Further, as shown in FIG. 3, both end portions 21 a located on the outer side in the bottle radial direction in the reinforcing wall portion 21 gradually move upward toward the upper side from the inner side to the outer side in the bottle radial direction. The reinforcing wall portion 21 is formed in a concave curve shape that is recessed downward in a plan view. Moreover, the upper end of the both-side end part 21a of the reinforcement wall part 21 is connected with the upper end part of the connection surrounding wall part 16 (vertical concave strip part 17). Moreover, the upper end of the intermediate part located between the both-side end parts 21a in the reinforcement wall part 21 is formed in the linear form along a bottle radial direction. The reinforcing wall portion 21 formed in this way is formed symmetrically with respect to the bottle axis O, and the shape in plan view is a half-moon shape.

以上に示した本実施形態に係るボトル１０によれば、底部１４の内面に、中央壁部１５と連結周壁部１６とを連結する補強壁部２１が突設されているので、ボトル１０の内圧の上昇に伴い中央壁部１５に加えられる力を、補強壁部２１を介して連結周壁部１６に伝達させて受け止めさせることが可能となり、中央壁部１５が下側に向けて変形するのを抑制することができる。   According to the bottle 10 according to the present embodiment described above, the reinforcing wall portion 21 that connects the central wall portion 15 and the connecting peripheral wall portion 16 protrudes from the inner surface of the bottom portion 14, so that the internal pressure of the bottle 10 is increased. It is possible to transmit the force applied to the central wall portion 15 as it rises to the connecting peripheral wall portion 16 via the reinforcing wall portion 21 and receive it, and the central wall portion 15 can be deformed downward. Can be suppressed.

また、補強壁部２１が中央壁部１５と縦凹条部１７とを連結していることから、例えば補強壁部２１が中央壁部１５と脚部１８とを連結している場合に比べて、補強壁部２１を所定の位置および形状に容易かつ高精度に形成することが可能となり、補強壁部２１により中央壁部１５を確実に補強することができる。
また、補強壁部２１が、一対の縦凹条部１７同士を連結するように設けられていることから、例えば補強壁部２１が１つの縦凹条部１７と中央壁部１５とを連結する場合に比べて、中央壁部１５に加えられる力を、補強壁部２１を介して連結周壁部１６のなかでより広い部分にわたって伝達させることが可能となり、補強壁部２１による中央壁部１５の補強をより一層強固にすることができる。 Moreover, since the reinforcement wall part 21 has connected the center wall part 15 and the vertical concave strip part 17, compared with the case where the reinforcement wall part 21 has connected the center wall part 15 and the leg part 18, for example. The reinforcing wall portion 21 can be easily and accurately formed at a predetermined position and shape, and the central wall portion 15 can be reliably reinforced by the reinforcing wall portion 21.
Moreover, since the reinforcement wall part 21 is provided so that a pair of vertical groove part 17 may be connected, the reinforcement wall part 21 connects the one vertical groove part 17 and the center wall part 15, for example. Compared to the case, the force applied to the central wall portion 15 can be transmitted over a wider portion of the connecting peripheral wall portion 16 via the reinforcing wall portion 21, and the central wall portion 15 of the reinforcing wall portion 21 can be transmitted. The reinforcement can be further strengthened.

また、前記一対の縦凹条部１７が、ボトル軸Ｏをボトル径方向で挟んで互いに反対に位置しているので、補強壁部２１をボトル径方向に直線状に延在させることが可能となり、簡素な構成で中央壁部１５を全域にわたって偏り少なく補強することができる。
本実施形態では、底部１４において、補強壁部２１を挟んだ一方側部分１４ａの形状と他方側部分１４ｂの形状とが同一形状になっているので、中央壁部１５のうちの前記一方側に位置する部分および前記他方側に位置する部分、それぞれの部分における補強壁部２１による補強を、各部分においてボトル周方向で対応する位置で同程度のものとすることができる。これにより、補強壁部２１によって中央壁部１５を全域にわたって偏り少なく補強することができる。
さらに、単に補強壁部２１を底部１４の平面視において直線状に延在させるだけで、補強壁部２１によって前述のように効果的に中央壁部１５を補強することができることから、補強壁部２１の総量を抑えつつ中央壁部１５の変形を抑制することが可能となる。 In addition, since the pair of vertical concave strips 17 are positioned opposite to each other with the bottle shaft O sandwiched in the bottle radial direction, the reinforcing wall portion 21 can be extended linearly in the bottle radial direction. The central wall portion 15 can be reinforced with a simple structure and with little bias.
In the present embodiment, in the bottom portion 14, the shape of the one side portion 14 a sandwiching the reinforcing wall portion 21 and the shape of the other side portion 14 b are the same, so The portion positioned and the portion positioned on the other side, and the reinforcement by the reinforcing wall portion 21 in each portion, can be made comparable at the corresponding positions in the bottle circumferential direction in each portion. As a result, the central wall 15 can be reinforced with less bias over the entire area by the reinforcing wall 21.
Furthermore, since the reinforcing wall portion 21 can effectively reinforce the central wall portion 15 as described above by simply extending the reinforcing wall portion 21 linearly in a plan view of the bottom portion 14, the reinforcing wall portion The deformation of the central wall portion 15 can be suppressed while the total amount of 21 is suppressed.

また、前記一方側部分１４ａの形状と前記他方側部分１４ｂの形状とが同一形状になっているので、補強壁部２１を設けることに起因してボトル１０の重心が前記一方側や前記他方側に移動してしまうことがなく、このボトル１０を安定して自立させることができる。   In addition, since the shape of the one side portion 14a and the shape of the other side portion 14b are the same shape, the center of gravity of the bottle 10 is placed on the one side or the other side due to the provision of the reinforcing wall portion 21. The bottle 10 can be made stable and independent.

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、本発明の実施例では、ボトル軸Ｏをボトル径方向で挟んで互いに反対に位置する一対の縦凹条部１７同士を連結する場合であっても、一対の縦凹条部１７それぞれにおけるボトル周方向の中央部分同士を互いに連結しなくても良い。 For example, in the embodiment of the present invention, even when a pair of vertical concave strip portions 17 positioned opposite to each other with the bottle axis O sandwiched in the bottle radial direction are connected to each other, The central portions in the bottle circumferential direction may not be connected to each other.

また、前記実施形態では、補強壁部２１は、底部１４の全域にわたって延在しているものしたが、本発明の実施例では、これに限られるものでない。 In the above embodiment, the reinforcing wall portion 21 has been those extending across the entire bottom 14, in the embodiment of the present invention, not limited to this.

また、前記実施形態では、補強壁部２１の側端部２１ａの上端は、連結周壁部１６の上端部に連結されているものとしたが、これに限られるものではない。例えば、本発明の実施例では、連結周壁部１６において上端部よりも下側に位置する部分に連結されていても良い。 Moreover, in the said embodiment, although the upper end of the side edge part 21a of the reinforcement wall part 21 shall be connected with the upper end part of the connection surrounding wall part 16, it is not restricted to this. For example , in the embodiment of the present invention , the connecting peripheral wall portion 16 may be connected to a portion located below the upper end portion.

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。
ところで、前記実施形態では、補強壁部２１は、中央壁部１５と縦凹条部１７とを連結し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く、中央壁部１５と脚部１８とを連結しても良い。なおこの場合、脚部１８における接地突部１９および脚側壁部２０と中央壁部１５とを連結することが好ましい。
また、前記実施形態では、補強壁部２１は、ボトル軸Ｏをボトル径方向で挟んで互いに反対に位置する一対の縦凹条部１７同士を連結し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。例えば、本発明の参考例では、ボトル周方向で隣り合う一対の縦凹条部１７同士を連結しても良い。
また、補強壁部２１は、前記平面視直線状に延在し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く、例えば、前記平面視においてボトル軸Ｏを起点として３方向以上に延在する放射状を呈すように設けられていても良い。例えば、本発明の参考例では、補強壁部は、前記平面視において十字形状を呈すように設けられていても良い。またこの場合、補強壁部は、ボトル周方向で隣り合う縦凹条部同士を連結していても良い。
さらに、本発明の参考例では、前記平面視直線状に延在している場合であっても、ボトル径方向に沿っていなくても良い。
また、本発明の参考例では、補強壁部２１の側端部２１ａの上端が、ボトル１０の胴部１３に連結されていても良い。
また、前記実施形態では、縦凹条部１７および脚部１８は、それぞれ偶数個ずつ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く、例えばそれぞれ奇数個ずつ形成されていても良い。 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.
By the way, in the said embodiment, although the reinforcement wall part 21 shall have connected the center wall part 15 and the vertical groove part 17, it is not restricted to this in the reference example of this invention, A center The wall 15 and the leg 18 may be connected. In this case, it is preferable to connect the ground contact protrusion 19 and the leg side wall portion 20 of the leg portion 18 to the central wall portion 15.
Moreover, in the said embodiment, although the reinforcement wall part 21 shall have connected the pair of vertical concave line part 17 mutually located on both sides of the bottle axis | shaft O in the bottle radial direction, reference of this invention The example is not limited to this. For example, in the reference example of the present invention, a pair of longitudinal concave portions 17 adjacent in the circumferential direction of the bottle may be connected.
In addition, the reinforcing wall portion 21 is assumed to extend linearly in the plan view. However, in the reference example of the present invention, the reinforcing wall portion 21 is not limited to this. For example, the bottle axis O starts in the plan view. It may be provided so as to exhibit a radial shape extending in three or more directions. For example, in the reference example of the present invention, the reinforcing wall portion may be provided so as to have a cross shape in the plan view. Further, in this case, the reinforcing wall portion may connect the longitudinal concave portions adjacent in the bottle circumferential direction.
Furthermore, in the reference example of the present invention, even if it extends in the straight line shape in the plan view, it does not have to be along the bottle radial direction.
In the reference example of the present invention, the upper end of the side end portion 21 a of the reinforcing wall portion 21 may be connected to the body portion 13 of the bottle 10.
Moreover, in the said embodiment, although the vertical concave streak part 17 and the leg part 18 were each formed evenly each, in the reference example of this invention, it is not restricted to this, For example, each odd number It may be formed one by one.

１０ ボトル
１１ 口部
１２ 肩部
１３ 胴部
１４ 底部
１５ 中央壁部
１６ 連結周壁部
１７ 縦凹条部
１８ 脚部
１９ 接地突部
２１ 補強壁部
Ｏ ボトル軸 DESCRIPTION OF SYMBOLS 10 Bottle 11 Mouth part 12 Shoulder part 13 Body part 14 Bottom part 15 Central wall part 16 Connection surrounding wall part 17 Vertical concave part 18 Leg part 19 Grounding protrusion 21 Reinforcement wall part O Bottle axis

Claims (2)

筒状の口部、肩部および胴部と、有底筒状の底部と、が合成樹脂材料で一体に形成され、
前記底部は、中央部に配置されるとともにボトル軸が直交する中央壁部と、該中央壁部の外周縁と胴部とを連結する連結周壁部と、を備え、
前記連結周壁部には、ボトル軸回りに沿うボトル周方向に間隔をあけて複数の縦凹条部が形成されるとともに、該連結周壁部においてボトル周方向で隣り合う縦凹条部同士の間に位置する脚部に、前記中央壁部よりもボトル軸方向の外側に向けて突出する接地突部が備えられたボトルであって、
前記縦凹条部および前記脚部は、それぞれ偶数個ずつ形成され、
前記底部の内面に、前記中央壁部と前記連結周壁部とを連結する補強壁部が突設され、
前記補強壁部は、ボトル軸をボトル径方向で挟んで互いに反対に位置する一対の縦凹条部同士を連結し、
前記補強壁部は、前記底部の平面視においてボトル径方向に沿うように直線状に延在し、
前記補強壁部においてボトル径方向の外側に位置する両側端部の上端は、前記縦凹条部に連結されて前記胴部よりも下側に位置していることを特徴とするボトル。 A cylindrical mouth portion, a shoulder portion and a trunk portion, and a bottomed cylindrical bottom portion are integrally formed of a synthetic resin material,
The bottom portion includes a central wall portion disposed in the central portion and perpendicular to the bottle axis, and a connecting peripheral wall portion that connects the outer peripheral edge and the trunk portion of the central wall portion,
The connecting peripheral wall portion is formed with a plurality of vertical concave strip portions at intervals in the bottle peripheral direction around the bottle axis, and between the vertical concave strip portions adjacent in the peripheral direction of the bottle in the connecting peripheral wall portion. The bottle is provided with a grounding protrusion that protrudes toward the outside in the bottle axial direction from the central wall portion on the leg portion located at
The vertical recess and the leg are each formed with an even number,
A reinforcing wall portion that connects the central wall portion and the connecting peripheral wall portion protrudes from the inner surface of the bottom portion ,
The reinforcing wall portion connects a pair of longitudinal concave portions located opposite to each other across the bottle shaft in the bottle radial direction,
The reinforcing wall portion extends linearly along the bottle radial direction in a plan view of the bottom portion,
The bottle characterized in that upper ends of both side end portions located on the outer side in the bottle radial direction in the reinforcing wall portion are connected to the vertical concave stripe portion and located below the barrel portion . 請求項１記載のボトルであって、
前記補強壁部の両側端部の上端は、ボトル径方向の内側から外側に向かうに従って漸次上側に向かうとともに、この補強壁部の平面視で下側に向けて窪む凹曲線状に形成され、
前記補強壁部において両側端部同士の間に位置する中間部分の上端は、ボトル径方向に沿う直線状に形成されていることを特徴とするボトル。 The bottle according to claim 1,
The upper ends of both side end portions of the reinforcing wall portion are formed in a concave curve shape that gradually goes upward as it goes from the inside in the bottle radial direction to the outside, and is recessed downward in a plan view of the reinforcing wall portion,
The bottle characterized by the upper end of the intermediate part located between both edge parts in the said reinforcement wall part being formed in the linear form along a bottle radial direction .
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US5133468A (en) * 1991-06-14 1992-07-28 Constar Plastics Inc. Footed hot-fill container
US5398828A (en) * 1993-04-29 1995-03-21 Pepsico Inc. Blow molded plastic containers including internal support and handgrip
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