JP6116293B2

JP6116293B2 - Bottle

Info

Publication number: JP6116293B2
Application number: JP2013038825A
Authority: JP
Inventors: 桑原　和仁; 和仁桑原; 飯塚　茂雄; 茂雄飯塚
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2012-09-26
Filing date: 2013-02-28
Publication date: 2017-04-19
Anticipated expiration: 2033-02-28
Also published as: JP2014080236A

Description

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

従来から、例えば液状の食品や調味料等の内容物をボトル本体に収容する場合、経時変化や温度等の環境変化に伴って、内容物から揮発成分が生じたり内容物の体積が膨張したりするなどして、ボトル本体の内圧が上昇することが知られている。
ここで、このように上昇する内圧を外部に開放してボトル本体の内圧を安定させるため、例えばボトル本体に、下記特許文献１記載のキャップを適用することが考えられる。このキャップは、有頂筒状をなし、ボトル本体の口部に装着されるとともに、天壁部に内容物を注出する注出孔が形成されたキャップ本体と、キャップ本体の外周面に着脱自在に嵌合され、注出孔を開閉させるオーバーキャップと、を備えている。オーバーキャップの周壁部において、キャップ本体の外周面に嵌合する嵌合部分の少なくとも一部は、他よりも薄肉に形成されて弾性変形可能な薄肉部とされている。
この構成では、ボトル本体の内圧が高まると、薄肉部が径方向の外側に膨出変形し、薄肉部とキャップ本体の外周面との密閉状態が解除されることで内圧が外部に開放される。 Conventionally, for example, when contents such as liquid foods and seasonings are stored in the bottle body, volatile components are generated from the contents or the volume of the contents expands due to changes over time or environmental changes such as temperature. For example, it is known that the internal pressure of the bottle body increases.
Here, in order to stabilize the internal pressure of the bottle body by releasing the rising internal pressure to the outside in this way, for example, it is conceivable to apply a cap described in Patent Document 1 below to the bottle body. This cap has a crested shape, is attached to the mouth of the bottle body, and has a cap body in which a pouring hole for pouring the contents is formed in the top wall, and is attached to and detached from the outer peripheral surface of the cap body. An overcap that is freely fitted and opens and closes the pouring hole. In the peripheral wall portion of the overcap, at least a part of the fitting portion that is fitted to the outer peripheral surface of the cap body is formed to be thinner than the others and to be elastically deformable.
In this configuration, when the internal pressure of the bottle main body increases, the thin wall portion bulges outward in the radial direction, and the internal pressure is released to the outside by releasing the sealed state between the thin wall portion and the outer peripheral surface of the cap main body. .

特開２０１０−５２８２０号公報JP 2010-52820 A

しかしながら、前記従来のキャップでは、例えば内容物を温めるためにボトル本体ごと加熱する等してその内圧を上昇させたときに、薄肉部の変形の態様が安定しないことで、ボトル本体の内圧が開放されないおそれがある。 However, in the conventional cap, for example, when the internal pressure is increased by heating the entire bottle body to warm the contents, the internal pressure of the bottle body is released because the deformation of the thin portion is not stable. There is a risk that it will not.

本発明は、前述した事情に鑑みてなされたものであって、ボトル本体の内圧を安定に維持し易くすることができるボトルを提供することを目的とする。 This invention is made | formed in view of the situation mentioned above, Comprising: It aims at providing the bottle which can make it easy to maintain the internal pressure of a bottle main body stably.

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、内容物が収容されるボトル本体と、前記ボトル本体の口部に着脱可能に装着されるキャップと、を備えるボトルであって、前記キャップは、前記口部の外周面に螺着される有頂筒状の本体筒部と、前記本体筒部の天壁部から前記口部内に突出する突出筒部と、を備え、前記突出筒部は、この突出筒部と前記天壁部との間に内空間を画成する膜部材により閉塞され、前記キャップには、前記内空間とこのボトルの外部とを連通する流路部と、前記天壁部において前記突出筒部の内側に位置する内側部分から前記内空間内に突出し前記膜部材を破断可能な破断部と、が設けられ、前記突出筒部には、径方向の内側に向けて突出するフランジ部が設けられ、前記膜部材は、前記フランジ部に固着され前記フランジ部内を閉塞することで前記突出筒部を閉塞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.
The bottle according to the present invention is a bottle comprising a bottle body in which contents are accommodated, and a cap that is detachably attached to the mouth of the bottle body, wherein the cap is an outer peripheral surface of the mouth. A main body cylindrical portion having a top cylindrical shape that is screwed to the top, and a protruding cylindrical portion that protrudes from the top wall portion of the main body cylindrical portion into the mouth portion, and the protruding cylindrical portion includes the protruding cylindrical portion and the The cap is closed by a membrane member that defines an inner space between the cap and the cap, the cap includes a flow path portion that communicates the inner space with the outside of the bottle, and the protruding tube portion in the top wall portion A rupture portion that protrudes into the inner space from the inner portion located inside and capable of breaking the membrane member is provided, and the protruding cylinder portion is provided with a flange portion that protrudes radially inward. The membrane member is fixed to the flange portion and closes inside the flange portion. Characterized in that it closes the said projecting tubular portion in Rukoto.

この発明では、ボトル本体の内圧が上昇すると、この内圧により膜部材が内空間内に向けて変形させられる。膜部材が破断部に押圧させられるまで変形すると、破断部により膜部材が破断され、ボトル本体の内部と外部とが、膜部材の破断部分、内空間および流路部により形成される連通路を通して連通され、ボトル本体の内圧が、連通路を通して外部に開放される。
その後、ボトル本体内から内容物を取り出すときには、ボトル本体の口部と本体筒部との螺着を解除して口部からキャップを離脱させ、キャップおよび膜部材を口部から一体に取り外すことで口部を開放する。 In the present invention, when the internal pressure of the bottle body increases, the membrane member is deformed toward the internal space by the internal pressure. When the membrane member is deformed until it is pressed against the breaking portion, the membrane member is broken by the breaking portion, and the inside and the outside of the bottle body pass through the communication path formed by the breaking portion of the membrane member, the inner space, and the flow path portion. The internal pressure of the bottle body is released to the outside through the communication path.
After that, when taking out the contents from the bottle body, the screwing between the mouth part of the bottle body and the body tube part is released, the cap is removed from the mouth part, and the cap and the membrane member are removed from the mouth part. Open mouth.

以上より、このボトルによれば、膜部材が破断部により一旦、破断されると、ボトル本体の内部と外部とが連通路を通して連通されるので、ボトル本体の内圧を、連通路を通して外部に確実に開放することが可能になり、ボトル本体の内圧を安定に維持し易くすることができる。
また、ボトル本体の口部からキャップを離脱させることで、キャップおよび膜部材を口部から一体に取り外すことができるので、簡便な操作で口部を開放することができる。 As described above, according to this bottle, once the membrane member is broken by the breaking portion, the inside and the outside of the bottle main body are communicated through the communication path, so that the internal pressure of the bottle main body is surely secured to the outside through the communication path. It is possible to easily open and maintain the internal pressure of the bottle body stably.
Further, by removing the cap from the mouth portion of the bottle body, the cap and the membrane member can be integrally removed from the mouth portion, so that the mouth portion can be opened by a simple operation.

また、前記流路部は、前記内側部分に貫設されていてもよい。 Moreover, the said flow-path part may be penetrated by the said inner side part.

この場合、流路部が、天壁部の内側部分に貫設されているので、内空間と外部とを確実に連通しつつ、キャップの構造の簡素化および製造の簡便化を図ることができる。 In this case, since the flow path portion is provided through the inner portion of the top wall portion, the cap structure can be simplified and the manufacturing can be simplified while the internal space and the outside are reliably communicated. .

また、前記突出筒部には、前記膜部材を、この膜部材に対して前記ボトル本体の内側から覆い、前記膜部材および前記ボトル本体の内部の両方に開口する開口部が形成された被覆部材が連結されていてもよい。 Further, the projecting cylinder portion is a covering member in which the membrane member is covered from the inside of the bottle body with respect to the membrane member, and an opening is formed in both the membrane member and the inside of the bottle body. May be connected.

この場合、突出筒部に被覆部材が連結されているので、例えばボトル本体が意図せず倒れたとき等に、ボトル本体内の内容物を被覆部材によりせき止めてこの内容物が膜部材に至るのを抑えることができる。これにより、膜部材が、内容物により不用意に内空間内に向けて変形させられるのを抑えることが可能になり、膜部材の予期せぬ破断を抑制することができる。
また、被覆部材に前記開口部が形成されているので、ボトル本体の内圧が上昇したときに、この内圧を、開口部を通して膜部材に作用させることができる。これにより、膜部材を、ボトル本体の内圧に応じて精度良く変形させることが可能になり、ボトル本体の内圧が所定値まで上昇したときに、膜部材を確実に破断することができる。
以上より、突出筒部に前記被覆部材を連結することで、ボトル本体が意図せず倒れたとき等に膜部材が不意に破断することを抑制しつつ、ボトル本体の内圧が所定値まで上昇したときに膜部材を確実に破断することができる。 In this case, since the covering member is connected to the protruding cylindrical portion, for example, when the bottle body falls down unintentionally, the contents in the bottle body are blocked by the covering member, and the contents reach the membrane member. Can be suppressed. Thereby, it becomes possible to suppress that the membrane member is inadvertently deformed into the inner space by the contents, and unexpected breakage of the membrane member can be suppressed.
Moreover, since the said opening part is formed in the coating | coated member, when the internal pressure of a bottle main body raises, this internal pressure can be made to act on a film | membrane member through an opening part. Thereby, the membrane member can be accurately deformed according to the internal pressure of the bottle body, and the membrane member can be reliably broken when the internal pressure of the bottle body rises to a predetermined value.
As described above, by connecting the covering member to the projecting cylindrical portion, the internal pressure of the bottle main body has increased to a predetermined value while preventing the membrane member from being unexpectedly broken when the bottle main body falls unintentionally. Sometimes the membrane member can be reliably broken.

また、前記内側部分には、前記内空間内に突出して前記破断部に隣接するガード部が設けられるとともに、前記流路部が貫設され、前記ガード部は、前記流路部内に配置され、前記ガード部のうちの少なくとも一部は、前記流路部の内周縁に破断可能な弱化部を介して連結されてもよい。 Further, the inner portion is provided with a guard portion that protrudes into the inner space and is adjacent to the fracture portion, the flow passage portion is provided therethrough, and the guard portion is disposed in the flow passage portion, At least a part of the guard part may be connected to the inner periphery of the flow path part via a weakening part that can be broken.

この場合、天壁部の内側部分にガード部が設けられているので、例えばボトル本体が意図せず倒れたとき等に、ボトル本体内の内容物が膜部材を破断部側に向けて押し上げようとしても、膜部材がガード部に支持されることによって、この膜部材の変形を規制することが可能になり、膜部材が破断部により破断されるまで変形するのを抑えることができる。
また、ガード部のうちの少なくとも一部が、流路部の内周縁に弱化部を介して連結されているので、ボトル本体の内圧の上昇に伴い膜部材が変形すると、膜部材がガード部をボトル本体の外側に向けて押し上げ、このガード部が所定距離押し上げられたときに、弱化部が破断され、ガード部による膜部材の支持が解除されることにより、膜部材が破断部に押し付けられて破断されることとなる。
このように、ボトル本体の内圧が上昇する過程において、弱化部が破断された後でなければ、膜部材を破断部により破断させないようにすることが可能になり、ボトル本体の内圧が所定値に到達するまでの間に、膜部材が破断されるのを抑制することができる。 In this case, since the guard part is provided in the inner part of the top wall part, for example, when the bottle body falls down unintentionally, the contents in the bottle body will push the membrane member toward the broken part side. Even so, by supporting the membrane member on the guard portion, it becomes possible to regulate the deformation of the membrane member, and it is possible to suppress the membrane member from being deformed until it is broken by the fracture portion.
In addition, since at least a part of the guard part is connected to the inner peripheral edge of the flow path part via the weakening part, when the film member is deformed as the internal pressure of the bottle body increases, the film member becomes the guard part. When the guard part is pushed up toward the outside of the bottle body and the guard part is pushed up a predetermined distance, the weakened part is broken and the support of the film member by the guard part is released, so that the membrane member is pressed against the broken part. It will be broken.
Thus, in the process of increasing the internal pressure of the bottle main body, it is possible to prevent the membrane member from being broken by the broken portion unless the weakened portion is broken, and the internal pressure of the bottle main body becomes a predetermined value. It is possible to prevent the membrane member from being broken before reaching.

また、前記ガード部のうち、前記弱化部との連結部分を回避した部分は、前記流路部の内周縁に弾性変形可能な連結部を介して連結されてもよい。 Moreover, the part which avoided the connection part with the said weakening part among the said guard parts may be connected to the inner periphery of the said flow-path part via the connection part which can be elastically deformed.

この場合、ガード部のうち、弱化部との連結部分を回避した部分が、流路部の内周縁に弾性変形可能な連結部を介して連結されているので、前述のように弱化部が破断されても、連結部を介してガード部と天壁部とを連結しておき、ガード部が天壁部から分離されるのを防ぐことができる。 In this case, the portion of the guard portion that avoids the connection portion with the weakened portion is connected to the inner peripheral edge of the flow passage portion via the elastically deformable connecting portion, so that the weakened portion breaks as described above. Even if it is done, a guard part and a ceiling wall part can be connected via a connection part, and it can prevent that a guard part separates from a ceiling wall part.

本発明に係るボトルによれば、ボトル本体の内圧を安定に維持し易くすることができる。 According to the bottle of the present invention, the internal pressure of the bottle body can be easily maintained stably.

本発明の第１実施形態に係るボトルの要部の縦断面図である。It is a longitudinal cross-sectional view of the principal part of the bottle which concerns on 1st Embodiment of this invention. 図１に示すボトルであって、ボトル本体の内圧上昇時における要部の縦断面図である。FIG. 2 is a longitudinal cross-sectional view of the main part of the bottle shown in FIG. 1 when the internal pressure of the bottle body is increased. 本発明の第２実施形態に係るボトルの要部の縦断面図である。It is a longitudinal cross-sectional view of the principal part of the bottle which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係るボトルの要部の縦断面図である。It is a longitudinal cross-sectional view of the principal part of the bottle which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係るボトルの要部の縦断面図である。It is a longitudinal cross-sectional view of the principal part of the bottle which concerns on 4th Embodiment of this invention. 図５に示すボトルであって、ボトル本体の内圧上昇時における要部の縦断面図である。It is a bottle shown in FIG. 5, Comprising: It is a longitudinal cross-sectional view of the principal part at the time of the internal pressure rise of a bottle main body. 図５の平面図である。FIG. 6 is a plan view of FIG. 5.

（第１実施形態）
以下、図面を参照し、本発明に係る第１実施形態のボトルを説明する。
図１に示すように、ボトル１０は、内容物が収容されるボトル本体１１と、ボトル本体１１の口部１１ａに着脱可能に装着されるキャップ１２と、を備えている。前記内容物としては、例えば液体状の食品などが挙げられる。前記食品としては、例えば酒類などが挙げられる。 (First embodiment)
Hereinafter, a bottle according to a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the bottle 10 includes a bottle main body 11 in which contents are stored, and a cap 12 that is detachably attached to the mouth portion 11 a of the bottle main body 11. Examples of the contents include liquid foods. Examples of the food include alcoholic beverages.

ここで、ボトル本体１１は有底筒状に形成され、キャップ１２は有頂筒状に形成され、ボトル本体１１およびキャップ１２の各中心軸は共通軸上に位置している。以下、この共通軸をボトル軸Ｏといい、ボトル軸Ｏ方向に沿ってボトル本体１１の底部側を下側といい、キャップ１２側を上側という。また、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, the bottle main body 11 is formed in a bottomed cylindrical shape, the cap 12 is formed in a topped cylindrical shape, and the central axes of the bottle main body 11 and the cap 12 are located on a common axis. Hereinafter, this common axis is referred to as the bottle axis O, the bottom side of the bottle body 11 along the bottle axis O direction is referred to as the lower side, and the cap 12 side is referred to as the upper side. A direction perpendicular to the bottle axis O is referred to as a radial direction, and a direction around the bottle axis O is referred to as a circumferential direction.

ボトル本体１１は、例えばガラス材料や合成樹脂材料などで形成される。前記合成樹脂材料としては、例えばＰＥＴ（ポリエチレンテレフタレート）等が挙げられる。ボトル本体１１の口部１１ａの外周面には、雄ねじが形成されている。
キャップ１２は、ボトル本体１１の口部１１ａの外周面に螺着される有頂筒状の本体筒部１３と、本体筒部１３の天壁部１４から口部１１ａ内に突出する突出筒部１５と、を備えている。本体筒部１３と突出筒部１５とは一体に形成されている。 The bottle body 11 is made of, for example, a glass material or a synthetic resin material. Examples of the synthetic resin material include PET (polyethylene terephthalate). A male screw is formed on the outer peripheral surface of the mouth portion 11 a of the bottle body 11.
The cap 12 has a top cylindrical body cylinder portion 13 screwed to the outer peripheral surface of the mouth portion 11 a of the bottle body 11, and a protruding cylinder portion projecting into the mouth portion 11 a from the top wall portion 14 of the body cylinder portion 13. 15. The main body cylinder portion 13 and the protruding cylinder portion 15 are integrally formed.

本体筒部１３の内周面には、前記雄ねじに螺合する雌ねじが形成されている。
本体筒部１３内には、表裏面がボトル軸Ｏ方向を向く環板状のパッキン１８が嵌合されている。パッキン１８は、例えば発泡材、合成ゴムやエラストマー等により形成される。
パッキン１８は、本体筒部１３の周壁部１６において前記雌ねじよりも上側に位置する部分内に嵌合されるとともに、突出筒部１５に外嵌している。パッキン１８は、口部１１ａの開口端縁に、周方向の全周にわたって液密に当接している。パッキン１８は、口部１１ａの外周面と本体筒部１３の内周面との間を通したボトル本体１１の内部と外部との連通を遮断している。 On the inner peripheral surface of the main body cylinder portion 13, a female screw that is screwed into the male screw is formed.
An annular plate-shaped packing 18 whose front and back surfaces face the bottle axis O direction is fitted in the main body cylinder portion 13. The packing 18 is formed of, for example, a foam material, a synthetic rubber, an elastomer, or the like.
The packing 18 is fitted into a portion located above the female screw in the peripheral wall portion 16 of the main body cylindrical portion 13 and is externally fitted to the protruding cylindrical portion 15. The packing 18 is in liquid-tight contact with the opening edge of the mouth portion 11a over the entire circumference in the circumferential direction. The packing 18 blocks communication between the inside and the outside of the bottle main body 11 that passes between the outer peripheral surface of the mouth portion 11 a and the inner peripheral surface of the main body cylinder portion 13.

突出筒部１５の外周面と口部１１ａの内周面との間には、環状の隙間が設けられている。突出筒部１５は、この突出筒部１５と天壁部１４との間に内空間１９を画成する膜部材２０により閉塞されている。膜部材２０は、キャップ１２とは別体に形成されていて、例えばフィルム材やシート材などにより、表裏面がボトル軸を向く薄膜状に形成される。膜部材２０は、ボトル本体１１の内圧上昇に伴い上方（ボトル軸方向に沿うボトル本体の外側）に向けて膨出変形する程度の可撓性を具備している。膜部材２０は、突出筒部１５の開口端縁に固着され、突出筒部１５の開口端部を閉塞している。膜部材２０は、キャップ１２と別体に形成された後、キャップ１２に貼り付けされる。 An annular gap is provided between the outer peripheral surface of the protruding cylindrical portion 15 and the inner peripheral surface of the mouth portion 11a. The protruding cylinder part 15 is closed by a membrane member 20 that defines an inner space 19 between the protruding cylinder part 15 and the top wall part 14. The membrane member 20 is formed separately from the cap 12, and is formed into a thin film with the front and back surfaces facing the bottle axis, for example, by a film material, a sheet material, or the like. The membrane member 20 is flexible enough to bulge and deform upward (outside the bottle body along the bottle axial direction) as the internal pressure of the bottle body 11 increases. The membrane member 20 is fixed to the opening end edge of the protruding cylinder portion 15 and closes the opening end portion of the protruding cylinder portion 15. The film member 20 is formed separately from the cap 12 and then attached to the cap 12.

そして本実施形態では、キャップ１２には、内空間１９とこのボトル１０の外部とを連通する流路部２１と、天壁部１４において突出筒部１５の内側に位置する内側部分１４ａから内空間１９内に突出し膜部材２０を破断可能な破断部２２と、が設けられている。流路部２１は、天壁部１４の内側部分１４ａに貫設されている。流路部２１は、ボトル軸Ｏを回避するように配置されている。なお図示の例では、流路部２１は、内側部分１４ａにボトル軸Ｏ方向に貫設された１つの貫通孔により形成されているが、例えば複数の貫通孔により形成されていてもよい。 In the present embodiment, the cap 12 has an inner space from a flow path portion 21 that communicates the inner space 19 with the outside of the bottle 10, and an inner portion 14 a that is located on the inner side of the protruding cylindrical portion 15 in the top wall portion 14. A breakage portion 22 that protrudes into the wall 19 and can break the membrane member 20 is provided. The flow path portion 21 is provided through the inner portion 14 a of the top wall portion 14. The flow path portion 21 is arranged so as to avoid the bottle axis O. In the example shown in the figure, the flow path portion 21 is formed by one through-hole penetrating the inner portion 14a in the bottle axis O direction, but may be formed by a plurality of through-holes, for example.

破断部２２は、天壁部１４から下方（ボトル軸方向に沿うボトル本体の内側）に向けて突設されている。破断部２２は、ボトル軸Ｏと同軸の棒状に形成されている。破断部２２は、天壁部１４の内側部分１４ａと一体に形成されている。破断部２２の先端部と膜部材２０とは、ボトル軸Ｏ方向に離間している。破断部２２の先端部は、下方に向かうに従い漸次縮径する先鋭形状に形成されている。破断部２２の外周面には、ボトル軸Ｏ方向に延在する溝部２２ａが形成されている。溝部２２ａは、破断部２２のボトル軸Ｏ方向の全長にわたって延設されている。溝部２２ａは、周方向に間隔をあけて複数形成されている。 The fracture | rupture part 22 is protrudingly provided toward the downward direction (inner side of the bottle main body along a bottle axial direction) from the top wall part 14. As shown in FIG. The breaking portion 22 is formed in a rod shape coaxial with the bottle axis O. The breaking portion 22 is formed integrally with the inner portion 14 a of the top wall portion 14. The distal end portion of the breaking portion 22 and the membrane member 20 are separated in the bottle axis O direction. The tip of the fracture portion 22 is formed in a sharp shape that gradually decreases in diameter as it goes downward. A groove 22 a extending in the bottle axis O direction is formed on the outer peripheral surface of the fracture portion 22. The groove portion 22a extends over the entire length of the broken portion 22 in the bottle axis O direction. A plurality of groove portions 22a are formed at intervals in the circumferential direction.

前記ボトル１０では、例えば内容物を温めるため、湯煎や電子レンジによりボトル１０ごと加熱するとき等に、ボトル本体１１の内圧が上昇する。すると図２に示すように、この内圧により膜部材２０が内空間１９内に向けて変形させられる。このとき図示の例では、前記パッキン１８により、口部１１ａの外周面と本体筒部１３の内周面との間を通したボトル本体１１の内部と外部との連通が遮断されており、ボトル本体１１で上昇した内圧が、膜部材２０に効果的に作用する。 In the bottle 10, for example, when the whole bottle 10 is heated by a hot water bath or a microwave oven in order to warm the contents, the internal pressure of the bottle body 11 increases. Then, as shown in FIG. 2, the membrane member 20 is deformed toward the inner space 19 by this internal pressure. At this time, in the illustrated example, the packing 18 blocks communication between the inside and outside of the bottle main body 11 that passes between the outer peripheral surface of the mouth portion 11a and the inner peripheral surface of the main body cylinder portion 13, and the bottle 18 The internal pressure increased by the main body 11 effectively acts on the membrane member 20.

膜部材２０が破断部２２に押圧させられるまで変形すると、破断部２２により膜部材２０が破断され、ボトル本体１１の内部と外部とが、膜部材２０の破断部分２０ａ、内空間１９および流路部２１により形成される連通路２３を通して連通され、ボトル本体１１の内圧が、連通路２３を通して外部に開放される。このとき図示の例では、ボトル本体１１の内部と内空間１９とが、前記破断部分２０ａだけでなく前記溝部２２ａを通しても連通されることとなり、ボトル本体１１の内圧が効率的に外部に開放される。 When the membrane member 20 is deformed until it is pressed by the breaking portion 22, the membrane member 20 is broken by the breaking portion 22, and the inside and the outside of the bottle body 11 are connected to the breaking portion 20 a, the inner space 19, and the flow path of the membrane member 20. The communication is made through the communication passage 23 formed by the portion 21, and the internal pressure of the bottle body 11 is released to the outside through the communication passage 23. At this time, in the illustrated example, the inside of the bottle main body 11 and the inner space 19 are communicated not only through the fractured portion 20a but also through the groove 22a, so that the internal pressure of the bottle main body 11 is efficiently released to the outside. The

その後、ボトル本体１１内から内容物を取り出すときには、ボトル本体１１の口部１１ａと本体筒部１３との螺着を解除して口部１１ａからキャップ１２を離脱させ、キャップ１２、パッキン１８および膜部材２０を口部１１ａから一体に取り外すことで口部１１ａを開放する。 Thereafter, when the contents are taken out from the bottle main body 11, the screw 12 is released from the mouth portion 11a of the bottle main body 11 and the main body cylinder portion 13 and the cap 12 is detached from the mouth portion 11a, and the cap 12, the packing 18 and the membrane are removed. The mouth part 11a is opened by removing the member 20 from the mouth part 11a.

以上説明したように、本実施形態に係るボトル１０によれば、膜部材２０が破断部２２により一旦、破断されると、ボトル本体１１の内部と外部とが連通路２３を通して連通されるので、ボトル本体１１の内圧を、連通路２３を通して外部に確実に開放することが可能になり、ボトル本体１１の内圧を安定に維持し易くすることができる。 As described above, according to the bottle 10 according to the present embodiment, once the membrane member 20 is broken by the breaking portion 22, the inside and the outside of the bottle body 11 are communicated through the communication path 23. The internal pressure of the bottle main body 11 can be reliably opened to the outside through the communication passage 23, and the internal pressure of the bottle main body 11 can be easily maintained stably.

また、ボトル本体１１の口部１１ａからキャップ１２を離脱させることで、キャップ１２、パッキン１８および膜部材２０を口部１１ａから一体に取り外すことができるので、簡便な操作で口部１１ａを開放することができる。
さらに流路部２１が、天壁部１４の内側部分１４ａに貫設されているので、内空間１９と外部とを確実に連通しつつ、キャップ１２の構造の簡素化および製造の簡便化を図ることができる。 Further, by removing the cap 12 from the mouth portion 11a of the bottle body 11, the cap 12, the packing 18, and the membrane member 20 can be integrally removed from the mouth portion 11a, so that the mouth portion 11a is opened by a simple operation. be able to.
Furthermore, since the flow path portion 21 is provided through the inner portion 14a of the top wall portion 14, the structure of the cap 12 and simplification of the manufacture are achieved while reliably connecting the inner space 19 and the outside. be able to.

（第２実施形態）
次に、本発明に係る第２実施形態のボトルを、図３を参照して説明する。
なお、この第２実施形態においては、第１実施形態における構成要素と同一の部分については同一の符号を付し、その説明を省略し、異なる点についてのみ説明する。 (Second Embodiment)
Next, a bottle according to a second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

図３に示すように、本実施形態に係るボトル３０では、突出筒部１５には、径方向の内側に向けて突出するフランジ部３１が設けられている。フランジ部３１は、ボトル軸Ｏと同軸の環板状に形成されている。フランジ部３１は、突出筒部１５の開口端部に配設されている。フランジ部３１における突出筒部１５との連結部分には、上方に向けて開口する環状溝が形成されている。 As shown in FIG. 3, in the bottle 30 according to the present embodiment, the protruding cylindrical portion 15 is provided with a flange portion 31 that protrudes inward in the radial direction. The flange portion 31 is formed in an annular plate shape coaxial with the bottle shaft O. The flange portion 31 is disposed at the opening end portion of the protruding cylinder portion 15. An annular groove that opens upward is formed at a portion of the flange portion 31 that is connected to the protruding cylindrical portion 15.

膜部材２０は、フランジ部３１内を閉塞することで突出筒部１５を閉塞している。膜部材２０は、フランジ部３１に対して上側に位置しており、フランジ部３１の上面（ボトル軸方向に沿うボトル本体の外側を向く面）に固着されている。膜部材２０は、前記環状溝の径方向の内側に位置している。 The membrane member 20 closes the protruding cylindrical portion 15 by closing the inside of the flange portion 31. The membrane member 20 is positioned on the upper side with respect to the flange portion 31, and is fixed to the upper surface of the flange portion 31 (the surface facing the outside of the bottle body along the bottle axial direction). The membrane member 20 is located inside the annular groove in the radial direction.

ここでキャップ１２は、天壁部１４の内側部分１４ａを有する第１分割体１２Ａと、天壁部１４において内側部分１４ａよりも外側に位置する外側部分１４ｂ、突出筒部１５およびフランジ部３１を有する第２分割体１２Ｂと、に分割されている。キャップ１２は、第１分割体１２Ａと第２分割体１２Ｂとが組み付けられてなる。 Here, the cap 12 includes a first divided body 12A having an inner portion 14a of the top wall portion 14, an outer portion 14b positioned outside the inner portion 14a in the top wall portion 14, the protruding cylinder portion 15 and the flange portion 31. It has divided | segmented into the 2nd division body 12B which has. The cap 12 is formed by assembling a first divided body 12A and a second divided body 12B.

第２分割体１２Ｂは、前述した天壁部１４の外側部分１４ｂ、突出筒部１５およびフランジ部３１と、前記周壁部１６と、が一体に形成されてなる。第２分割体１２Ｂは、突出筒部１５を内筒とし、周壁部１６を外筒とする２重筒状に形成されている。第２分割体１２Ｂは、例えば膜部材２０をインサート品（インモールドラベル）とした射出成形などにより形成される。なお、第２分割体１２Ｂを成形した後に、熱シールなどにより、膜部材２０を第２分割体１２Ｂに溶着、融着などしてもよい。 The second divided body 12 </ b> B is formed by integrally forming the outer portion 14 b of the ceiling wall portion 14, the protruding cylindrical portion 15, the flange portion 31, and the peripheral wall portion 16. The 2nd division body 12B is formed in the double cylinder shape which uses the protrusion cylinder part 15 as an inner cylinder, and uses the surrounding wall part 16 as an outer cylinder. The second divided body 12B is formed by, for example, injection molding using the membrane member 20 as an insert product (in-mold label). Note that after the second divided body 12B is formed, the film member 20 may be welded or fused to the second divided body 12B by heat sealing or the like.

第１分割体１２Ａは、第２分割体１２Ｂ内に嵌合され、図示の例では、第２分割体１２Ｂに対して上方から嵌合されている。第１分割体１２Ａは、前述した天壁部１４の内側部分１４ａと、前記破断部２２と、突出筒部１５内に嵌合された嵌合筒部３２と、嵌合筒部３２の内周面に突設された規制部３３と、が一体に形成されてなる。
嵌合筒部３２は、天壁部１４の内側部分１４ａの外周縁部から下方に向けて突設されている。嵌合筒部３２の内径は、フランジ部３１の内径よりも大きい。 The first divided body 12A is fitted into the second divided body 12B, and in the illustrated example, the first divided body 12A is fitted to the second divided body 12B from above. 12A of 1st division bodies are the inner part 14a of the top wall part 14 mentioned above, the said fracture | rupture part 22, the fitting cylinder part 32 fitted in the protrusion cylinder part 15, and the inner periphery of the fitting cylinder part 32 The restriction portion 33 protruding from the surface is integrally formed.
The fitting cylinder part 32 protrudes downward from the outer peripheral edge part of the inner part 14 a of the top wall part 14. The inner diameter of the fitting cylinder portion 32 is larger than the inner diameter of the flange portion 31.

規制部３３は、周方向に間隔をあけて複数配置され、環状の規制部列を構成している。
規制部列の内径は、フランジ部３１の内径と同等となっている。規制部３３は、ボトル軸Ｏ方向に延在する縦リブ状に形成されている。規制部３３は、嵌合筒部３２のボトル軸Ｏ方向の全長にわたって延設されている。規制部３３の上端は、天壁部１４の内側部分１４ａに連結されている。規制部３３の下端は、膜部材２０の外周縁部に、この外周縁部の上方から当接している。規制部３３は、フランジ部３１との間に膜部材２０を挟み込んでいる。 A plurality of restricting portions 33 are arranged at intervals in the circumferential direction to constitute an annular restricting portion row.
The inner diameter of the restriction portion row is equal to the inner diameter of the flange portion 31. The restricting portion 33 is formed in a vertical rib shape extending in the bottle axis O direction. The restricting portion 33 extends over the entire length of the fitting tube portion 32 in the bottle axis O direction. The upper end of the restricting portion 33 is connected to the inner portion 14 a of the top wall portion 14. The lower end of the restricting portion 33 is in contact with the outer peripheral edge of the membrane member 20 from above the outer peripheral edge. The restricting portion 33 sandwiches the membrane member 20 between the restricting portion 33 and the flange portion 31.

以上説明したように、本実施形態に係るボトル３０によれば、前記第１実施形態と同様の作用効果を奏することができる。 As described above, according to the bottle 30 according to the present embodiment, the same operational effects as those of the first embodiment can be obtained.

またキャップ１２が、第１分割体１２Ａと第２分割体１２Ｂとに分割されているので、本実施形態のように膜部材２０がフランジ部３１の上面に固着された構成であっても、両分割体１２Ａ、１２Ｂを各別に形成した後、第２分割体１２Ｂ内に第１分割体１２Ａを嵌合することで、キャップ１２を簡便かつ高精度に形成することができる。
さらに規制部３３が、フランジ部３１との間に膜部材２０を挟み込んでいるので、ボトル本体１１の内圧上昇に伴って膜部材２０が変形したときに、膜部材２０がフランジ部３１から剥離するのを抑制することができる。 Further, since the cap 12 is divided into the first divided body 12A and the second divided body 12B, even if the membrane member 20 is fixed to the upper surface of the flange portion 31 as in the present embodiment, both After the divided bodies 12A and 12B are formed separately, the cap 12 can be easily and accurately formed by fitting the first divided body 12A into the second divided body 12B.
Further, since the regulating member 33 sandwiches the membrane member 20 with the flange portion 31, the membrane member 20 peels from the flange portion 31 when the membrane member 20 is deformed as the internal pressure of the bottle body 11 increases. Can be suppressed.

なお本実施形態では、流路部２１が前記貫通孔により形成されているが、これに限られない。例えば、突出筒部の内周面および嵌合筒部の外周面のうち、少なくとも一方に、ボトル軸方向に延在して内空間の内部および外部に各別に連通する連通溝を形成し、この連通溝により前記流路部を形成してもよい。 In addition, in this embodiment, although the flow-path part 21 is formed of the said through-hole, it is not restricted to this. For example, at least one of the inner peripheral surface of the protruding cylindrical portion and the outer peripheral surface of the fitting cylindrical portion is formed with a communication groove that extends in the bottle axial direction and communicates with the inside and the outside of the inner space. The flow path portion may be formed by a communication groove.

（第３実施形態）
次に、本発明に係る第３実施形態のボトルを、図４を参照して説明する。
なお、この第３実施形態においては、第２実施形態における構成要素と同一の部分については同一の符号を付し、その説明を省略し、異なる点についてのみ説明する。 (Third embodiment)
Next, a bottle according to a third embodiment of the present invention will be described with reference to FIG.
Note that in the third embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

図４に示すように、本実施形態に係るボトル４０では、突出筒部１５には、膜部材２０を、この膜部材２０に対してボトル本体１１の内側から覆う被覆部材４１が連結されている。被覆部材４１は、表裏面がボトル軸Ｏ方向を向く板状に形成されている。被覆部材４１の外周縁部は、フランジ部３１の下面に連結されている。被覆部材４１とフランジ部３１とは周方向の全周にわたって連結されている。被覆部材４１は、ボトル軸Ｏ方向に沿う縦断面視において、下方に向けて凸となるように湾曲している。被覆部材４１と膜部材２０とはボトル軸Ｏ方向に離間していて、被覆部材４１と膜部材２０との間には空間４２が設けられている。 As shown in FIG. 4, in the bottle 40 according to this embodiment, a covering member 41 that covers the membrane member 20 from the inside of the bottle body 11 to the membrane member 20 is connected to the protruding cylinder portion 15. . The covering member 41 is formed in a plate shape whose front and back surfaces face the bottle axis O direction. The outer peripheral edge portion of the covering member 41 is connected to the lower surface of the flange portion 31. The covering member 41 and the flange portion 31 are connected over the entire circumference in the circumferential direction. The covering member 41 is curved so as to protrude downward in a longitudinal sectional view along the bottle axis O direction. The covering member 41 and the membrane member 20 are separated from each other in the bottle axis O direction, and a space 42 is provided between the covering member 41 and the membrane member 20.

被覆部材４１は、膜部材２０およびボトル本体１１の内部の両方に開口する開口部４１ａが形成されている。開口部４１ａは、被覆部材４１をボトル軸Ｏ方向に貫通し、ボトル本体１１の内部と前記空間４２とを連通している。開口部４１ａは、ボトル軸Ｏを回避するように配置されている。開口部４１ａは、破断部２２に対して径方向にずらされていて、破断部２２とボトル軸Ｏ方向に対向していない。なお図示の例では、開口部４１ａは、下方から上方に向かうに従い漸次拡径しているが、例えば下方から上方に向かうに従い漸次縮径していてもよく、ボトル軸Ｏ方向の位置によらず同径であってもよい。 The covering member 41 is formed with an opening 41 a that opens both inside the membrane member 20 and inside the bottle body 11. The opening 41a penetrates the covering member 41 in the bottle axis O direction, and communicates the inside of the bottle main body 11 with the space 42. The opening 41a is arranged so as to avoid the bottle axis O. The opening 41a is shifted in the radial direction with respect to the breaking portion 22 and does not face the breaking portion 22 in the bottle axis O direction. In the example shown in the figure, the opening 41a gradually increases in diameter as it goes from the lower side to the upper side. However, for example, it may be gradually reduced in diameter as it goes from the lower side to the upper side, regardless of the position in the bottle axis O direction. It may be the same diameter.

なお本実施形態では、被覆部材４１は、天壁部１４の外側部分１４ｂ、突出筒部１５、フランジ部３１および周壁部１６と一体に形成されていて、第２分割体１２Ｂの一部を構成している。そして膜部材２０は、第２分割体１２Ｂと別体に形成された後、フランジ部３１に貼り付けされる。 In the present embodiment, the covering member 41 is formed integrally with the outer portion 14b of the top wall portion 14, the protruding cylindrical portion 15, the flange portion 31, and the peripheral wall portion 16, and constitutes a part of the second divided body 12B. doing. The membrane member 20 is formed separately from the second divided body 12 </ b> B, and then attached to the flange portion 31.

以上説明したように、本実施形態に係るボトル４０によれば、前記第２実施形態と同様の作用効果を奏することができる。 As described above, according to the bottle 40 according to the present embodiment, the same effects as those of the second embodiment can be achieved.

さらに、突出筒部１５に被覆部材４１が連結されているので、例えばボトル本体１１が意図せず倒れたとき等に、ボトル本体１１内の内容物を被覆部材４１によりせき止めてこの内容物が膜部材２０に至るのを抑えることができる。これにより、膜部材２０が、内容物により不用意に内空間１９内に向けて変形させられるのを抑えることが可能になり、膜部材２０の予期せぬ破断を抑制することができる。
また、被覆部材４１に前記開口部４１ａが形成されているので、ボトル本体１１の内圧が上昇したときに、この内圧を、開口部４１ａを通して膜部材２０に作用させることができる。これにより、膜部材２０を、ボトル本体１１の内圧に応じて精度良く変形させることが可能になり、ボトル本体１１の内圧が所定値まで上昇したときに、膜部材２０を確実に破断することができる。
以上より、突出筒部１５に前記被覆部材４１を連結することで、ボトル本体１１が意図せず倒れたとき等に膜部材２０が不意に破断することを抑制しつつ、ボトル本体１１の内圧が所定値まで上昇したときに膜部材２０を確実に破断することができる。 Further, since the covering member 41 is connected to the projecting cylindrical portion 15, for example, when the bottle body 11 falls down unintentionally, the contents in the bottle body 11 are blocked by the covering member 41, and the contents are filmed. It is possible to suppress reaching the member 20. Thereby, it becomes possible to suppress that the membrane member 20 is inadvertently deformed into the inner space 19 by the contents, and unexpected breakage of the membrane member 20 can be suppressed.
Further, since the opening 41a is formed in the covering member 41, when the internal pressure of the bottle body 11 rises, this internal pressure can be applied to the membrane member 20 through the opening 41a. Thereby, the membrane member 20 can be accurately deformed according to the internal pressure of the bottle body 11, and the membrane member 20 can be reliably broken when the internal pressure of the bottle body 11 rises to a predetermined value. it can.
As described above, by connecting the covering member 41 to the projecting cylindrical portion 15, the inner pressure of the bottle body 11 is suppressed while preventing the membrane member 20 from being unexpectedly broken when the bottle body 11 falls down unintentionally. When rising to a predetermined value, the membrane member 20 can be reliably broken.

（第４実施形態）
次に、本発明に係る第４実施形態のボトルを、図５、図６および図７を参照して説明する。
なお、この第４実施形態においては、第１実施形態における構成要素と同一の部分については同一の符号を付し、その説明を省略し、異なる点についてのみ説明する。 (Fourth embodiment)
Next, the bottle of 4th Embodiment which concerns on this invention is demonstrated with reference to FIG.5, FIG.6 and FIG.
In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

本実施形態に係るボトル５０では、天壁部１４の内側部分１４ａに、内空間１９内に突出して破断部２２に隣接するガード部５１が設けられている。
図示の例では、ガード部５１は、天壁部１４の平面視で、径方向の内側に向けて開口するＣ字状を呈する半円筒状に形成されている。ガード部５１は、ボトル軸Ｏと同軸に配設されている。ガード部５１の下端は、破断部２２の下端より下方に位置している。なお、ガード部５１及び破断部２２それぞれの下端のボトル軸Ｏ方向の位置を互いに一致させてもよい。 In the bottle 50 according to the present embodiment, a guard portion 51 that protrudes into the inner space 19 and is adjacent to the fracture portion 22 is provided on the inner portion 14 a of the top wall portion 14.
In the illustrated example, the guard portion 51 is formed in a semi-cylindrical shape having a C-shape that opens toward the inside in the radial direction in a plan view of the top wall portion 14. The guard part 51 is disposed coaxially with the bottle axis O. The lower end of the guard part 51 is located below the lower end of the breaking part 22. In addition, you may make the position of the bottle axis | shaft O direction of the lower end of each of the guard part 51 and the fracture | rupture part 22 mutually correspond.

ガード部５１は、天壁部１４の平面視で、流路部５５内に配置されている。
流路部５５は、天壁部１４の平面視で、ボトル軸Ｏを径方向の外側から囲うＣ字状を呈する環状部５５ａと、環状部５５ａにおける周方向の中央部から径方向の外側に向けて張り出した矩形状を呈する矩形部５５ｂと、を備えている。なお、環状部５５ａの周端縁５５ｃは、矩形部５５ｂにおける径方向の外端５５ｄから径方向の内側に向けてボトル軸Ｏを超えた位置に位置している。また、破断部２２は、ボトル軸Ｏと同軸に配設され、天壁部１４の平面視で、流路部５５の環状部５５ａにより径方向の外側から囲われている。破断部２２は、天壁部１４のうち、流路部５５の環状部５５ａに径方向の外側から囲まれた半円状部分より小径に形成されている。 The guard part 51 is disposed in the flow path part 55 in a plan view of the top wall part 14.
The flow path portion 55 has a C-shaped annular portion 55a surrounding the bottle axis O from the outside in the radial direction and a radially central portion in the annular portion 55a from the outer side in the radial direction in a plan view of the top wall portion 14. And a rectangular portion 55b having a rectangular shape projecting toward it. The circumferential edge 55c of the annular portion 55a is located at a position beyond the bottle axis O from the radially outer end 55d of the rectangular portion 55b toward the radially inner side. The breaking portion 22 is disposed coaxially with the bottle axis O, and is surrounded from the outside in the radial direction by the annular portion 55a of the flow passage portion 55 in a plan view of the top wall portion 14. The breaking portion 22 is formed to have a smaller diameter than the semicircular portion surrounded by the annular portion 55a of the flow passage portion 55 from the outside in the radial direction in the top wall portion 14.

ガード部５１は、破断可能な弱化部５３を介して流路部５５の内周縁に連結されている。図示の例では、ガード部５１における周方向の両端部５１ａが、弱化部５３を介して流路部５５の内周縁のうち、環状部５５ａの周端縁５５ｃに連結されている。
ガード部５１のうち、弱化部５３との連結部分を回避した部分は、流路部５５の内周縁に弾性変形可能な連結部５４を介して連結されている。図示の例では、ガード部５１における周方向の中央部が、連結部５４を介して流路部５５の内周縁のうち、矩形部５５ｂにおける径方向の外端５５ｄに連結されている。
連結部５４は、上面が天壁部１４の上面と一致し、下面が天壁部１４の下面から上方に窪む薄板状に形成されている。連結部５４は、天壁部１４の平面視で、流路部５５の矩形部５５ｂと相似の矩形状を呈している。なお、ガード部５１の上端には、径方向の外側に向けて突出し、連結部５４に周方向の両側から連なるフランジ部が形成されている。 The guard part 51 is connected to the inner peripheral edge of the flow path part 55 via a weakened part 53 that can be broken. In the illustrated example, both end portions 51 a in the circumferential direction of the guard portion 51 are connected to the peripheral edge 55 c of the annular portion 55 a among the inner peripheral edge of the flow passage portion 55 via the weakening portion 53.
A portion of the guard portion 51 that avoids the connection portion with the weakening portion 53 is connected to the inner peripheral edge of the flow path portion 55 via a connection portion 54 that can be elastically deformed. In the illustrated example, the central portion in the circumferential direction of the guard portion 51 is connected to the radially outer end 55 d of the rectangular portion 55 b among the inner peripheral edge of the flow passage portion 55 through the connecting portion 54.
The connecting portion 54 is formed in a thin plate shape whose upper surface coincides with the upper surface of the ceiling wall portion 14 and whose lower surface is recessed upward from the lower surface of the ceiling wall portion 14. The connecting part 54 has a rectangular shape similar to the rectangular part 55 b of the flow path part 55 in a plan view of the top wall part 14. At the upper end of the guard portion 51, a flange portion that protrudes outward in the radial direction and that is continuous with the connecting portion 54 from both sides in the circumferential direction is formed.

以上説明したように、本実施形態に係るボトル５０によれば、前記第１実施形態と同様の作用効果を奏することができる。 As described above, according to the bottle 50 according to the present embodiment, the same operational effects as those of the first embodiment can be obtained.

さらに、天壁部１４の内側部分１４ａにガード部５１が設けられているので、例えばボトル本体１１が意図せず倒れたとき等に、ボトル本体１１内の内容物が膜部材２０を破断部２２側に向けて押し上げようとしても、膜部材２０がガード部５１に支持されることによって、この膜部材２０の変形を規制することが可能になり、膜部材２０が破断部２２により破断されるまで変形するのを抑えることができる。 Furthermore, since the guard part 51 is provided in the inner part 14a of the top wall part 14, for example, when the bottle body 11 falls down unintentionally, the contents in the bottle body 11 cause the membrane member 20 to break the membrane member 20. Even if the film member 20 is pushed upward, the deformation of the film member 20 can be regulated by the film member 20 being supported by the guard part 51, and the film member 20 is broken by the breaking part 22. Deformation can be suppressed.

また、ガード部５１が流路部５５の内周縁に弱化部５３を介して連結されているので、ボトル本体１１の内圧の上昇に伴い膜部材２０が変形すると、膜部材２０がガード部５１をボトル本体１１の外側に向けて押し上げ、このガード部５１が所定距離押し上げられたときに、弱化部５３が破断され、ガード部５１による膜部材２０の支持が解除されることにより、膜部材２０が破断部２２に押し付けられて破断されることとなる。
このように、ボトル本体１１の内圧が上昇する過程において、弱化部５３が破断された後でなければ、膜部材２０を破断部２２により破断させないようにすることが可能になり、ボトル本体１１の内圧が所定値に到達するまでの間に、膜部材２０が破断されるのを抑制することができる。
また、ガード部５１のうち、弱化部５３との連結部分を回避した部分が、流路部５５の内周縁に弾性変形可能な連結部５４を介して連結されているので、前述のように弱化部５３が破断されても、連結部５４を介してガード部５１と天壁部１４とを連結しておき、ガード部５１が天壁部１４から分離されるのを防ぐことができる。 In addition, since the guard part 51 is connected to the inner peripheral edge of the flow path part 55 via the weakening part 53, when the film member 20 is deformed as the internal pressure of the bottle body 11 increases, the film member 20 causes the guard part 51 to move. When the guard 51 is pushed up a predetermined distance by pushing up toward the outside of the bottle body 11, the weakened portion 53 is broken and the support of the membrane member 20 by the guard 51 is released, whereby the membrane member 20 is It will be ruptured by being pressed against the breaking portion 22.
Thus, in the process of increasing the internal pressure of the bottle main body 11, the membrane member 20 can be prevented from being broken by the broken portion 22 unless the weakened portion 53 is broken. It is possible to suppress the membrane member 20 from being broken before the internal pressure reaches a predetermined value.
Moreover, since the part which avoided the connection part with the weakening part 53 among the guard parts 51 is connected via the connection part 54 which can be elastically deformed to the inner periphery of the flow-path part 55, it weakens as mentioned above. Even if the portion 53 is broken, the guard portion 51 and the top wall portion 14 are connected via the connecting portion 54, and the guard portion 51 can be prevented from being separated from the top wall portion 14.

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。
例えば、パッキン１８および溝部２２ａはなくてもよい。 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.
For example, the packing 18 and the groove 22a may be omitted.

また前記実施形態では、突出筒部１５の外周面と口部１１ａの内周面との間に、環状の隙間が設けられているものとしたが、これに限られない。例えば突出筒部が、ボトル本体の口部内に液密に嵌合していてもよい。
さらに流路部２１は、前記実施形態に示したものに限られない。例えば前述のように突出筒部が、ボトル本体の口部内に嵌合する構成において、流路部が、突出筒部に径方向に貫設され、口部の外周面と本体筒部の内周面との間を通してボトル本体の内部と外部とを連通してもよい。
また前記第４実施形態において、破断部２２は流路部５５の外側に配置してもよい。
また前記第４実施形態において、ガード部５１は、例えば棒状にする等適宜変更してもよい。
また前記第４実施形態において、連結部５４は、例えば天壁部１４の厚さと同等にする等適宜変更してもよく、また連結部５４は設けなくてもよい。
また前記第４実施形態において、ガード部５１の外周縁を全周にわたって弱化部５３を介して流路部５５の内周縁に連結してもよい。
また、前記第４実施形態に、前記第３実施形態の被覆部材４１を適用してもよい。 Moreover, in the said embodiment, although the cyclic | annular clearance gap was provided between the outer peripheral surface of the protrusion cylinder part 15 and the inner peripheral surface of the opening part 11a, it is not restricted to this. For example, the protruding cylinder part may be liquid-tightly fitted in the mouth part of the bottle body.
Furthermore, the flow path part 21 is not restricted to what was shown to the said embodiment. For example, in the configuration in which the protruding cylindrical portion is fitted in the mouth portion of the bottle main body as described above, the flow path portion is provided to penetrate the protruding cylindrical portion in the radial direction, and the outer peripheral surface of the mouth portion and the inner periphery of the main body cylindrical portion. The inside and the outside of the bottle main body may be communicated with each other through the surface.
In the fourth embodiment, the fracture portion 22 may be disposed outside the flow path portion 55.
In the fourth embodiment, the guard 51 may be appropriately changed, for example, in a bar shape.
Moreover, in the said 4th Embodiment, the connection part 54 may be changed suitably, for example to make it equivalent to the thickness of the top wall part 14, and the connection part 54 does not need to be provided.
Moreover, in the said 4th Embodiment, you may connect the outer periphery of the guard part 51 to the inner periphery of the flow-path part 55 via the weakening part 53 over the perimeter.
Further, the covering member 41 of the third embodiment may be applied to the fourth embodiment.

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.

１０、３０、４０、５０ボトル
１１ボトル本体
１１ａ口部
１２キャップ
１３本体筒部
１４天壁部
１４ａ内側部分
１５突出筒部
１９内空間
２０膜部材
２１、５５流路部
２２破断部
４１被覆部材
４１ａ開口部
５１ガード部
５３弱化部
５４連結部 10, 30, 40, 50 Bottle 11 Bottle body 11a Mouth part 12 Cap 13 Body cylinder part 14 Top wall part 14a Inner part 15 Projecting cylinder part 19 Inner space 20 Membrane member 21, 55 Channel part 22 Breaking part 41 Covering member 41a Opening 51 Guard portion 53 Weakening portion 54 Connecting portion

Claims

A bottle comprising a bottle body in which contents are accommodated, and a cap detachably attached to the mouth of the bottle body,
The cap includes a cylindrical body tube portion that is screwed to the outer peripheral surface of the mouth portion, and a projecting tube portion that protrudes from the top wall portion of the body tube portion into the mouth portion.
The protruding cylindrical portion is closed by a membrane member that defines an inner space between the protruding cylindrical portion and the top wall portion,
The cap projects into the inner space from a channel portion communicating the inner space and the outside of the bottle, and an inner portion located inside the projecting tube portion in the top wall portion, and breaks the membrane member Possible breaks , and
The projecting cylinder part is provided with a flange part projecting inward in the radial direction,
The bottle , wherein the membrane member is fixed to the flange portion and closes the flange portion by closing the inside of the flange portion .

The bottle according to claim 1,
The bottle characterized in that the flow path portion is provided through the inner portion.

The bottle according to claim 1 or 2,
The projecting cylinder portion is connected to a covering member that covers the membrane member from the inside of the bottle body with respect to the membrane member, and is formed with an opening that opens both inside the membrane member and inside the bottle body. Bottle characterized by being.

The bottle according to any one of claims 1 to 3,
The inner portion is provided with a guard portion that protrudes into the inner space and is adjacent to the fracture portion, and the flow passage portion is provided therethrough,
The guard part is disposed in the flow path part,
At least one part of the said guard part is connected with the inner periphery of the said flow-path part through the weakening part which can be fractured, The bottle characterized by the above-mentioned.

The bottle according to claim 4,
A part of the guard part that avoids a connection part with the weakening part is connected to an inner peripheral edge of the flow path part via a connection part that can be elastically deformed.