JP2024058734A

JP2024058734A - Carbonated drink bottles

Info

Publication number: JP2024058734A
Application number: JP2022166009A
Authority: JP
Inventors: 良一鴻池
Original assignee: スケーター株式会社
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2024-04-30

Abstract

【課題】炭酸飲料を収容した断熱性のボトル本体にキャップユニットを装着することにより密閉された飲料保存状態を可能とする炭酸飲料用ボトルを提供する。【解決手段】炭酸飲料を収容したボトル本体の筒口部にキャップユニットを装着することにより密閉した飲料保存状態において、ボトル本体の内部にガスによる所定圧力を超える高圧状態が生じたときは、ガス抜き通路(15)から分岐通路(16)を経て、前記筒状シール部(17a)を弾性変形させることにより、ガスが外部に放出されるように構成され、前記飲料保存状態から、操作装置(7)を前記所定回転角度だけねじ戻したときは、前記可変隙間部(S)を広げることにより、ボトル本体の内部に充満したガスが開閉用シール部(17c)を通過して出口部(15b)から外部に放出されるように構成されている。【選択図】図１[Problem] To provide a carbonated beverage bottle that can be kept in a sealed beverage storage state by attaching a cap unit to an insulated bottle body containing a carbonated beverage. [Solution] When a high pressure state exceeding a predetermined pressure is generated inside the bottle body by gas in a sealed beverage storage state by attaching a cap unit to the cylindrical mouth of the bottle body containing a carbonated beverage, the gas is released to the outside by elastically deforming the cylindrical seal portion (17a) from a gas vent passage (15) through a branch passage (16), and when the operating device (7) is screwed back by the predetermined rotation angle from the beverage storage state, the variable gap portion (S) is widened, and the gas filled inside the bottle body passes through the opening and closing seal portion (17c) and is released to the outside from the outlet portion (15b). [Selected drawing] Figure 1

Description

本発明は、炭酸飲料を収容した断熱性のボトル本体にキャップユニットを装着することにより密閉された飲料保存状態を可能とする炭酸飲料用ボトルに関する。 The present invention relates to a bottle for carbonated beverages that allows the beverage to be stored in a sealed state by attaching a cap unit to an insulated bottle body containing a carbonated beverage.

種々の飲料用ボトルが販売されているが、炭酸飲料用ボトルとして満足できるものが提供されていない。 There are many different types of beverage bottles on the market, but no satisfactory bottles are available for carbonated beverages.

炭酸飲料は、冷却状態で断熱性のボトルに充満して気密的にシールすると、ガスの発生を抑制することができるが、ボトル内部に飲料が充填されていない空間が存在した状態で揺すったり、冷却状態から温度が上昇したりすると、ガスの発生が活性化されることになる。 When carbonated beverages are cooled and placed in an insulated bottle and sealed airtight, gas generation can be suppressed; however, if the bottle is shaken while there is space inside unfilled with beverage, or if the temperature rises from a cooled state, gas generation will be activated.

そこで、ボトルの内部が所定圧力以上の高圧状態になると、ボトルを密閉したキャップが飛ばされるという暴発事故を招来する危険がある。 Therefore, if the pressure inside the bottle exceeds a certain level, there is a risk of the cap sealing the bottle being blown off, resulting in an explosion.

また、ボトル内部が所定圧力とされている状態でも、ボトル内部にガスが充満しているので、ユーザが飲用のためにキャップを取り外すと、ガスと共に飲料が噴き出し、衣服等を汚損する問題がある。 In addition, even when the inside of the bottle is at a certain pressure, the bottle is filled with gas, so when the user removes the cap to drink, the beverage will spray out along with the gas, causing the problem of staining clothing, etc.

このため、特許文献１や特許文献２のような飲料用ボトルが提案されている。 For this reason, beverage bottles such as those disclosed in Patent Document 1 and Patent Document 2 have been proposed.

特開２００２－６８２６７号公報JP 2002-68267 A 特開２００３－３８３６０号公報JP 2003-38360 A

特許文献１により提案された飲料用ボトルは、ボトル本体の口筒部に設けた雌ネジにキャップの筒部に設けた雄ネジをねじ込む構成とされ、ネジ部の上下にシール用のパッキンを設け、ボトル内部の圧力が上昇すると、キャップの筒部が膨らみ、ネジ部の螺合を強め、パッキンを強く密着させることにより、キャップを外れ難くするように構成している。しかしながら、このようにシールを強めるように構成することは、ボトル内部の圧力が更に上昇したときは、暴発のおそれがあり、極めて危険である。 The beverage bottle proposed in Patent Document 1 is configured so that a male thread on the cylindrical portion of the cap is screwed into a female thread on the mouth of the bottle body, and sealing gaskets are provided above and below the threaded portion; when pressure inside the bottle rises, the cylindrical portion of the cap expands, tightening the screwing of the threaded portion and tightly adhering the gasket, making it difficult for the cap to come off. However, configuring the seal to be strengthened in this way is extremely dangerous, as it poses the risk of the bottle exploding if pressure inside the bottle rises further.

特許文献２により提案された飲料用ボトルは、栓体に設けた排圧通路に圧力調整弁を設け、常圧時には閉弁するが、高圧時には開弁することにより、ボトル内部の圧力を減圧させるように構成している。しかしながら、圧力調整弁のためにスプリング等を使用することは構造の複雑化を招来する問題があり、しかも、減圧調整が緩く設定されている場合は、炭酸飲料の気が抜けてしまうおそれがあり、減圧調整が固く設定されている場合は、開栓時に飲料が噴き出して衣服等を汚損するおそれがある。 The beverage bottle proposed in Patent Document 2 is configured with a pressure regulating valve in a pressure relief passage provided in the stopper, which closes at normal pressure but opens at high pressure, thereby reducing the pressure inside the bottle. However, using a spring or the like for the pressure regulating valve is problematic in that it complicates the structure, and if the pressure reduction adjustment is set too loosely, there is a risk that the carbonated beverage will lose its gas, and if the pressure reduction adjustment is set too tightly, there is a risk that the beverage will spray out when the bottle is opened, causing damage to clothing, etc.

本発明は、上記の問題を解決した炭酸飲料用ボトルの提供を課題としている。 The objective of the present invention is to provide a bottle for carbonated beverages that solves the above problems.

そこで、本発明が第１の手段として構成したところは、筒口部に雌ネジを設けた断熱性のボトル本体と、前記雌ネジに螺合する雄ネジにより筒口部を開閉自在に閉鎖するキャップユニットを備え、ボトル本体に収容した炭酸飲料を前記筒口部から注出する構成とされ、前記雄ネジは雌ネジに対して、正転回動によりねじ込み方向に移動し、逆転回動によりねじ戻し方向に移動する構成において、前記キャップユニットは、前記雄ネジのねじ込みにより前記筒口部の内周部を気密的にシールするシールパッキンを設けた栓装置と、前記筒口部の上方から前記栓装置を正逆回転させる操作装置から成り、前記栓装置と操作装置は、相互に上向き筒部と下向き筒部を挿入することにより組み合わされ、操作装置を所定回転角度だけ正転方向と逆転方向に回転させたとき、該操作装置を前記栓装置に対してそれぞれねじ込み方向とねじ戻し方向に移動させ、前記所定回転角度を超えて回転させたとき、栓装置を操作装置に追従して回転させるように構成した連結回転機構を設けており、更に、前記栓装置と操作装置の相互に、操作装置をねじ込み方向に移動したとき狭まり、ねじ戻し方向に移動させたとき広がる可変隙間部が外気に通じて形成され、前記キャップユニットにはボトル本体の内部に連通するガス抜き通路と、ガス抜きパッキンが設けられ、前記ガス抜き通路は、前記筒部を貫通して外気に通じる分岐路と、前記可変隙間部に臨む出口部を備え、前記ガス抜きパッキンは、前記分岐路を含んで前記筒部を被覆する筒状シール部と、前記可変隙間部に挿入される開閉用シール部を一体に形成しており、前記可変隙間部が広げられた状態から狭められたとき該隙間部が開閉用シール部により閉じられて前記出口部をシールするように構成され、炭酸飲料を収容したボトル本体の筒口部にキャップユニットを装着することにより密閉した飲料保存状態において、ボトル本体の内部にガスによる所定圧力を超える高圧状態が生じたときは、ガス抜き通路から分岐通路を経て、前記筒状シール部を弾性変形させることにより、ガスが外部に放出されるように構成され、前記飲料保存状態から、操作装置を前記所定回転角度だけねじ戻したときは、前記可変隙間部を広げることにより、ボトル本体の内部に充満したガスが開閉用シール部を通過して出口部から外部に放出されるように構成されて成る点にある。 The first aspect of the present invention is a bottle having an insulating bottle body with a female thread at the nozzle, and a cap unit that closes the nozzle by a male thread that engages with the female thread, and is configured to pour the carbonated beverage contained in the bottle body from the nozzle. The male thread moves in a screw-in direction relative to the female thread by rotating forward and moves in an unscrewing direction by rotating reverse. The cap unit comprises a stopper device provided with a seal packing that airtightly seals the inner periphery of the nozzle by screwing the male thread, and a cap unit that is inserted from above the nozzle. The plug device and the operating device are combined by inserting an upward cylindrical portion and a downward cylindrical portion into each other, and when the operating device is rotated in the forward and reverse directions by a predetermined rotation angle, the operating device is moved in the screw-in and unscrewing directions relative to the plug device, respectively, and when the operating device is rotated beyond the predetermined rotation angle, the plug device is rotated following the operating device. Furthermore, the plug device and the operating device are narrowed relative to each other when the operating device is moved in the screw-in direction and widened relative to each other when the operating device is moved in the unscrewing direction. a variable gap portion formed in the cap unit and communicating with the outside air, the cap unit being provided with a gas vent passage communicating with the inside of the bottle body and a gas vent packing, the gas vent passage having a branch passage penetrating the cylindrical portion and communicating with the outside air, and an outlet portion facing the variable gap portion, the gas vent packing integrally forming a cylindrical seal portion including the branch passage and covering the cylindrical portion, and an opening/closing seal portion inserted into the variable gap portion, and configured such that when the variable gap portion is narrowed from a widened state, the gap portion is closed by the opening/closing seal portion to seal the outlet portion, In a sealed beverage storage state in which a cap unit is attached to the cylindrical mouth of the bottle body containing the beverage, when a high pressure state exceeding a predetermined pressure occurs inside the bottle body due to gas, the gas is released to the outside by elastically deforming the cylindrical seal part through a branch passage from the gas release passage, and when the operating device is unscrewed by the predetermined rotation angle from the beverage storage state, the variable gap part is widened, and the gas filling the inside of the bottle body passes through the opening and closing seal part and is released to the outside from the outlet part.

また、本発明が第２の手段として構成したところは、筒口部に雌ネジを設けた断熱性のボトル本体と、前記雌ネジに螺合する雄ネジにより筒口部を開閉自在に閉鎖するキャップユニットを備え、ボトル本体に収容した炭酸飲料を前記筒口部から注出する構成とされ、前記雄ネジは雌ネジに対して、正転回動によりねじ込み方向に移動し、逆転回動によりねじ戻し方向に移動する構成において、前記キャップユニットは、前記雄ネジのねじ込みにより前記筒口部の内周部を気密的にシールするシールパッキンを設けた栓装置と、前記筒口部の上方から前記栓装置を正逆回転させる操作装置から成り、前記栓装置と操作装置は、栓装置の上向き筒部に前記操作装置の下向き筒部を挿入すると共に、両筒部の相互に、操作装置を所定回転角度だけ正転方向と逆転方向に回転させたとき、該操作装置を前記栓装置の内部でそれぞれねじ込み方向とねじ戻し方向に移動させ、前記所定回転角度を超えて回転させたとき、栓装置を操作装置に追従して回転させるように構成した連結回転機構を設け、上向き筒部と下向き筒部の相互間には、操作装置をねじ込み方向に移動したとき狭まり、ねじ戻し方向に移動させたとき広がる可変隙間部が形成されており、前記キャップユニットは、内部にガス抜き通路を形成し、前記上向き筒部にガス抜きパッキンを設けており、前記ガス抜き通路は、ボトル本体の内部に連通する連通路と、前記可変隙間部を介して外気に連通する出口部と、前記上向き筒部に貫設された孔を介して外気に連通する分岐路を備え、前記ガス抜きパッキンは、前記出口部に臨んで可変隙間部に配置された開閉用シール部と、前記分岐通路を含んで上向き筒部の外周を被覆する筒状シール部を備えており、ボトル本体に炭酸飲料を収容し、前記可変隙間部を狭めることにより圧縮した開閉用シール部で出口部をシールすると共に、栓装置をねじ込むことによりシールパッキンで筒口部をシールすることにより、ボトル本体を密閉した飲料保存状態において、ボトル本体の内部にガスによる所定圧力を超える高圧状態が生じたときは、ガス抜き通路から分岐通路を経て、前記筒状シール部を弾性変形させることにより、ガスを外部に放出するように構成され、前記飲料保存状態から、操作装置を前記所定回転角度だけねじ戻したときは、前記可変隙間部が広がることにより、ボトル本体の内部に充満したガスを出口部から外部に放出するように構成されて成る点にある。 The second means of the present invention comprises an insulated bottle body having a female thread at the nozzle portion, and a cap unit that closes the nozzle portion by a male thread that is screwed into the female thread, and is configured to pour the carbonated beverage contained in the bottle body from the nozzle portion. The male thread moves in the screw-in direction by rotating forward and moves in the unscrewing direction by rotating reverse relative to the female thread. The cap unit comprises a plug device provided with a seal packing that airtightly seals the inner periphery of the nozzle portion by screwing the male thread into the nozzle, and a cap unit that can be used to open and close the plug device forward and backward from above the nozzle portion. The plug device and the operating device are provided with a connecting rotation mechanism configured such that when the operating device is rotated in the forward and reverse directions by a predetermined rotation angle between the two cylindrical portions, the operating device moves in the screw-in and screw-out directions inside the plug device, respectively, and when the operating device is rotated beyond the predetermined rotation angle, the plug device rotates following the operating device. Between the upward cylindrical portion and the downward cylindrical portion, a variable gap portion is formed which narrows when the operating device is moved in the screw-in direction and widens when it is moved in the screw-out direction. The cap unit has a gas vent passage formed therein and a gas vent packing provided in the upward cylindrical portion, the gas vent passage including a communication passage that communicates with the inside of the bottle body, an outlet portion that communicates with the outside air via the variable gap portion, and a branch passage that communicates with the outside air via a hole that is formed through the upward cylindrical portion, the gas vent packing including an opening/closing seal portion that is disposed in the variable gap portion facing the outlet portion, and a cylindrical seal portion that includes the branch passage and covers the outer periphery of the upward cylindrical portion, and the opening/closing seal portion is compressed by narrowing the variable gap portion when a carbonated beverage is filled in the bottle body. The outlet portion is sealed, and the plug device is screwed in to seal the cylindrical mouth portion with a seal packing. When a high pressure state exceeding a predetermined pressure occurs inside the bottle body with the bottle body sealed to store a beverage, the gas is released to the outside through a branch passage from the gas release passage by elastically deforming the cylindrical seal portion, and when the operating device is screwed back by the predetermined rotation angle from the beverage storage state, the variable gap portion widens, and the gas filling the inside of the bottle body is released to the outside from the outlet portion.

更に、本発明が第３の手段として構成したところは、筒口部に雌ネジを設けた断熱性のボトル本体と、前記雌ネジに螺合する雄ネジにより筒口部を開閉自在に閉鎖するキャップユニットを備え、ボトル本体に収容した炭酸飲料を前記筒口部から注出する構成とされ、前記雄ネジは雌ネジに対して、正転回動によりねじ込み方向に移動し、逆転回動によりねじ戻し方向に移動する構成において、前記キャップユニットは、前記雄ネジのねじ込みにより前記筒口部を気密的にシールするシールパッキンを設けた栓装置と、前記筒口部の上方から前記栓装置を正逆回転させる操作装置から成り、栓装置の上向き筒部に前記操作装置の下向き筒部を挿入することにより構成され、前記栓装置と操作装置の相互に、連結回転機構と、ガス抜き機構が設けられており、前記連結回転機構は、操作装置を所定回転角度だけ正転方向と逆転方向に回転させたとき、該操作装置を前記栓装置に対してそれぞれねじ込み方向とねじ戻し方向に移動させ、前記所定回転角度を超えて回転させたとき、栓装置を操作装置に追従して回転させるように構成されており、前記ガス抜き機構は、前記上向き筒部と下向き筒部の間に形成されており、下部をボトル本体の内部に連通し、上部に出口部を有するガス抜き通路と、前記ガス抜き通路に臨んで上向き筒部を貫通する分岐通路と、前記出口部に臨んで上向き筒部の上端部を被覆する開閉用シール部と、前記分岐通路を含んで上向き筒部の外周部を被覆する筒状シール部を備えたガス抜きパッキンと、前記操作装置の下向き筒部の基部から前記ガス抜き通路の出口部と開閉用シール部に対向するように形成されたシール面により構成されており、ボトル本体に炭酸飲料を収容し、栓装置のシールパッキンにより筒口部をシールすると共に、操作装置のシール面を開閉用シール部に密着させて出口部をシールすることにより、ボトル本体の内部を密閉した飲料保存状態において、ボトル本体の内部にガスによる所定圧力を超える高圧状態が生じたときは、ガスをガス抜き通路から分岐通路を経て、前記筒状シール部を弾性変形させることにより、外部に放出するように構成され、前記飲料保存状態から、操作装置を前記所定回転角度だけねじ戻したときは、前記シール面が開閉用シール部から離れることにより、ボトル本体の内部に充満したガスを出口部から外部に放出するように構成されて成る点にある。 Furthermore, the present invention has been configured as a third means, which comprises an insulated bottle body having a female thread at the nozzle portion, and a cap unit that closes the nozzle portion by a male thread that is screwed into the female thread, and is configured to pour the carbonated beverage contained in the bottle body from the nozzle portion, and the male thread moves in the screw-in direction by forward rotation relative to the female thread, and moves in the unscrewing direction by reverse rotation, and the cap unit comprises a plug device provided with a seal packing that airtightly seals the nozzle portion by screwing the male thread into the cap unit, and a cap unit that is configured to screw the plug device in the forward direction from above the nozzle portion. The plug device is constructed by inserting a downward cylindrical portion of the operating device into an upward cylindrical portion of the plug device, and a connecting rotation mechanism and a gas venting mechanism are provided between the plug device and the operating device. The connecting rotation mechanism is configured to move the operating device in the screw-in direction and the screw-out direction relative to the plug device when the operating device is rotated in the forward direction and the reverse direction by a predetermined rotation angle, respectively, and to rotate the plug device following the operating device when the operating device is rotated beyond the predetermined rotation angle, and the gas venting mechanism is formed between the upward cylindrical portion and the downward cylindrical portion. a gas vent passage having an outlet at its upper part and communicating with the inside of the bottle body at its lower part; a branch passage penetrating the upward cylindrical part facing the gas vent passage; an opening/closing seal part facing the outlet part and covering the upper end of the upward cylindrical part; a gas vent packing having a cylindrical seal part covering the outer periphery of the upward cylindrical part including the branch passage; and a seal surface formed from the base of the downward cylindrical part of the operating device so as to face the outlet part of the gas vent passage and the opening/closing seal part. A carbonated beverage is filled in the bottle body, the cylindrical mouth part is sealed with the seal packing of the plug device, and the opening/closing seal part of the operating device is provided. By sealing the outlet portion by bringing the seal surface into close contact with the opening/closing seal portion, when a high pressure state exceeding a predetermined pressure occurs inside the bottle body in a beverage storage state in which the inside of the bottle body is sealed, the gas is discharged to the outside through a branch passage from the gas release passage by elastically deforming the cylindrical seal portion, and when the operating device is unscrewed by the predetermined rotation angle from the beverage storage state, the seal surface separates from the opening/closing seal portion, thereby discharging the gas filling the inside of the bottle body to the outside through the outlet portion.

好ましくは、前記ガス抜きパッキンは、前記開閉用シール部を前記筒状シール部の上端から内向きに周設すると共に、該開閉用シール部の内周部に沿って上向きに突出するリブ部を周設しており、前記飲料保存状態において、前記リブ部は前記操作装置の前記シール面により圧縮されるが、筒状シール部の上面は前記シール面から離間させられるように構成されている。 Preferably, the gas release packing has the opening and closing seal portion disposed inwardly from the upper end of the cylindrical seal portion, and has a rib portion disposed around the inner periphery of the opening and closing seal portion, protruding upwardly, so that in the beverage storage state, the rib portion is compressed by the seal surface of the operating device, but the upper surface of the cylindrical seal portion is separated from the seal surface.

本発明の好ましい実施形態において、前記連結回転機構は、回転自在に挿入された前記栓装置の上向き筒部と、前記操作装置の下向き筒部の相互において、一方の筒部に形成された螺旋溝と、他方の筒部に設けられて前記螺旋溝に摺動自在に嵌合された突部により構成されており、前記操作装置を所定回転角度だけ正転方向と逆転方向に回転させたとき、突部が螺旋溝に沿って摺動することにより、栓装置に対して操作装置をねじ込み方向とねじ戻し方向に移動させ、前記所定回転角度を超えて回転させたとき、突部が螺旋溝の端部に当接することにより、栓装置を操作装置に追従して回転させるように構成されている。 In a preferred embodiment of the present invention, the connecting rotation mechanism is configured by a spiral groove formed in one of the upward cylindrical portion of the plug device and the downward cylindrical portion of the operating device, which are rotatably inserted, and a protrusion provided on the other cylindrical portion and slidably fitted into the spiral groove, and when the operating device is rotated in the forward and reverse directions by a predetermined rotation angle, the protrusion slides along the spiral groove, moving the operating device in the screw-in and screw-out directions relative to the plug device, and when the operating device is rotated beyond the predetermined rotation angle, the protrusion abuts against the end of the spiral groove, causing the plug device to rotate following the operating device.

本発明によれば、炭酸飲料を収容したボトル本体１の筒口部１ａにキャップユニット２を装着することにより密閉した飲料保存状態において、ボトル本体１の内部にガスによる所定圧力ＰＮを超える高圧ＰＸの状態が生じたときは、ガスをガス抜き通路１５から分岐通路１６を経て、筒状シール部１７ａを弾性変形させることにより、外部に放出することができる。そして、前記飲料保存状態から、操作装置７所定回転角度だけねじ戻したときは、栓装置４を筒口部１ａに装着した状態で、開閉用シール部１７ｃによるシールを解除してガス抜き通路１５の出口部１５ｂを開放することにより、前記所定圧力ＰＮを大気圧まで減圧することができるので、飲料が噴き出すことはない。 According to the present invention, when a high pressure PX exceeding a predetermined pressure PN occurs inside the bottle body 1 in a sealed beverage storage state by attaching the cap unit 2 to the nozzle 1a of the bottle body 1 containing a carbonated beverage, the gas can be released to the outside by elastically deforming the cylindrical seal portion 17a through the branch passage 16 from the gas vent passage 15. Then, when the operating device 7 is unscrewed a predetermined rotation angle from the beverage storage state, the seal by the opening and closing seal portion 17c is released with the stopper device 4 attached to the nozzle 1a to open the outlet portion 15b of the gas vent passage 15, thereby reducing the predetermined pressure PN to atmospheric pressure, so that the beverage does not spray out.

本発明の実施形態に係る炭酸飲料用ボトルを示す断面図である。1 is a cross-sectional view showing a carbonated beverage bottle according to an embodiment of the present invention. キャップユニットの分解状態を示す斜視図である。FIG. 4 is a perspective view showing a disassembled state of the cap unit. キャップユニットを構成する栓装置と操作装置を分離した状態を示しており、（Ａ）は図２のＹ矢視方向の断面図、（Ｂ）は図２のＸ矢視方向の断面図である。3A and 3B show a state in which a plug device and an operating device constituting a cap unit are separated, and FIG. 3A is a cross-sectional view taken along the Y arrow direction in FIG. 2, and FIG. 3B is a cross-sectional view taken along the X arrow direction in FIG. 操作装置と栓装置の相互に設けられた連結回転機構の作用を示しており、（Ａ）は図２のＹ矢視方向の断面図、（Ｂ）は図２のＸ矢視方向の断面図である。3A and 3B show the operation of a connecting and rotating mechanism provided between the operating device and the plug device, in which FIG. 3A is a cross-sectional view taken along the Y arrow direction in FIG. 2, and FIG. 3B is a cross-sectional view taken along the X arrow direction in FIG. 操作装置と栓装置の相互に設けられたガス抜き機構を示す断面図である。11 is a cross-sectional view showing a gas venting mechanism provided between the operating device and the plug device. FIG. 本発明の作用に関し、（Ａ）はキャップユニットをボトル本体の口筒部に臨ませた状態を示す断面図、（Ｂ）は操作装置を正転回動することにより栓装置の雄ネジを口筒部の雌ネジにねじ込んでいる状態を示す断面図である。Regarding the operation of the present invention, (A) is a cross-sectional view showing the state in which the cap unit faces the mouth portion of the bottle body, and (B) is a cross-sectional view showing the state in which the male thread of the stopper device is screwed into the female thread of the mouth portion by rotating the operating device in the forward direction. 本発明の作用に関し、ボトル本体の内部が所定圧力を超えていないときの作用を説明しており、（Ａ）はボトル本体の口筒部にキャップユニットが装着された状態を示す断面図、（Ｂ）はガス抜き機構を示す拡大断面図である。Regarding the operation of the present invention, this figure explains the operation when the inside of the bottle body does not exceed a predetermined pressure, where (A) is a cross-sectional view showing the state in which the cap unit is attached to the mouth portion of the bottle body, and (B) is an enlarged cross-sectional view showing the gas venting mechanism. 本発明の作用に関し、ボトル本体の内部が所定圧力を超える高圧状態とされたときの作用を説明しており、（Ａ）はボトル本体の口筒部にキャップユニットが装着された状態を示す断面図、（Ｂ）はガス抜き機構を示す拡大断面図である。Regarding the operation of the present invention, this figure explains the operation when the inside of the bottle body is placed in a high-pressure state exceeding a predetermined pressure, where (A) is a cross-sectional view showing the state in which the cap unit is attached to the mouth portion of the bottle body, and (B) is an enlarged cross-sectional view showing the gas venting mechanism. 本発明の作用に関し、ボトル本体の筒部からキャップユニットを取り外す際に操作装置を逆転回動したときの作用を説明しており、（Ａ）はボトル本体の口筒部が栓装置によりシールされた状態で操作装置が逆転回動したときの状態を示す断面図、（Ｂ）はガス抜き機構を示す拡大断面図である。Regarding the operation of the present invention, this figure explains the operation when the operating device is rotated reversely to remove the cap unit from the tubular portion of the bottle body, where (A) is a cross-sectional view showing the state when the operating device is rotated reversely with the mouth portion of the bottle body sealed by the plug device, and (B) is an enlarged cross-sectional view showing the gas venting mechanism. 本発明の作用に関し、ボトル本体の筒部から栓装置をねじ戻すことにより取り外している状態を示す断面図である。FIG. 11 is a cross-sectional view showing the state in which the plug device is removed by unscrewing it from the cylindrical portion of the bottle body, in relation to the operation of the present invention.

以下図面に基づいて本発明の好ましい実施形態を詳述する。 A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

図１に示すように、炭酸飲料用ボトルは、ステンレス製の真空断熱容器により形成されたボトル本体１と、該ボトル本体１の筒口部１ａを開閉自在に閉鎖するキャップユニット２により構成されている。 As shown in FIG. 1, the carbonated beverage bottle is composed of a bottle body 1 formed from a stainless steel vacuum insulated container, and a cap unit 2 that closes the nozzle portion 1a of the bottle body 1 in an openable and closable manner.

開閉手段として、相互に螺合する雌ネジ３ａと雄ネジ３ｂがそれぞれ筒口部１ａとキャップユニット２に設けられており、雄ネジ３ｂは雌ネジ３ａに対して、正転方向Ｆの回動によりねじ込み方向Ｄ（図示下向き方向）に移動し、逆転方向Ｒ回動によりねじ戻し方向Ｕ（図示上向き方向）に移動する。 As an opening and closing means, a female screw 3a and a male screw 3b that screw into each other are provided on the nozzle 1a and the cap unit 2, respectively. The male screw 3b moves in a screw-in direction D (downward direction in the figure) when rotated in a forward direction F relative to the female screw 3a, and moves in an unscrewing direction U (upward direction in the figure) when rotated in a reverse direction R.

ボトル本体１は、キャップユニット２を取外した状態で筒口部１ａから炭酸飲料Ｑを注入することにより収容し、筒口部１ａをキャップユニット２で閉鎖することにより、炭酸飲料Ｑを保存する。炭酸飲料Ｑを飲用するときは、キャップユニット２を取外すことにより筒口部１ａを開口させ、炭酸飲料Ｑを注出する。 The bottle body 1 contains carbonated beverage Q by pouring it into the nozzle 1a with the cap unit 2 removed, and stores the carbonated beverage Q by closing the nozzle 1a with the cap unit 2. When drinking the carbonated beverage Q, the nozzle 1a is opened by removing the cap unit 2, and the carbonated beverage Q is poured out.

（キャップユニットの構成）
図２ないし図５に示すように、前記キャップユニット２は、前記雄ネジ３ａのねじ込みにより前記筒口部１ａの内周部を気密的にシールするシールパッキン２ａを設けた栓装置４と、前記筒口部１aの上方から前記栓装置４を正逆回転させる操作装置７により構成されている。 (Cap unit configuration)
As shown in Figures 2 to 5, the cap unit 2 is composed of a plug device 4 provided with a seal packing 2a that airtightly seals the inner periphery of the nozzle portion 1a by screwing in the male thread 3a, and an operating device 7 that rotates the plug device 4 forward and backward from above the nozzle portion 1a.

栓装置４は、上下を開放されたほぼ円筒体により形成され、リング状の前記シールパッキン２ａを装着した下端部５から上向き筒部６を延設している。上向き筒部６は、下側筒部６ａと上側筒部６ｂを有しており、下側筒部６ａの外周には前記雄ネジ３ａが形成されており、上側筒部６ｂは、後述するガス抜き機構の一部を構成する。 The plug device 4 is formed of a generally cylindrical body that is open at the top and bottom, and has an upwardly facing tube portion 6 extending from the lower end portion 5 to which the ring-shaped seal packing 2a is attached. The upwardly facing tube portion 6 has a lower tube portion 6a and an upper tube portion 6b, and the male thread 3a is formed on the outer periphery of the lower tube portion 6a, and the upper tube portion 6b forms part of the gas venting mechanism described below.

これに対して、操作装置７は、栓装置４よりも大径の円形とされた頂部８ａの周囲に周壁８ｂを周設した下向きカップ状の操作体８と、該操作体８の中心部に設けられた下向き筒部９を備えており、下向き筒部９の上端のフランジ９ａを前記頂部８ａの下面に高周波溶着その他の方法で結合一体化している。図示実施形態の場合、下向き筒部９の内部には、上下方向の中間位置に隔壁９ｂを設けており、該隔壁９ｂ頂部８ａの間の内部空間に断熱材１０を装填している。 In contrast, the operating device 7 has a downward cup-shaped operating body 8 with a peripheral wall 8b around the top 8a, which is circular and has a larger diameter than the plug device 4, and a downward cylindrical part 9 provided in the center of the operating body 8, and the flange 9a at the upper end of the downward cylindrical part 9 is joined and integrated with the underside of the top 8a by high-frequency welding or other methods. In the illustrated embodiment, a partition 9b is provided inside the downward cylindrical part 9 at the middle position in the vertical direction, and a heat insulating material 10 is filled in the internal space between the partition 9b and the top 8a.

キャップユニット２は、栓装置４の上向き筒部６に対して、操作装置７の下向き筒部９を回転可能に挿入すると共に、連結することにより構成されている。そこで、栓装置４と操作装置７の相互に、連結回転機構１１と、ガス抜き機構１２が設けられている。 The cap unit 2 is constructed by rotatably inserting the downward cylindrical portion 9 of the operating device 7 into the upward cylindrical portion 6 of the plug device 4 and connecting them. Therefore, a connecting rotation mechanism 11 and a gas release mechanism 12 are provided between the plug device 4 and the operating device 7.

（連結回転機構）
連結回転機構１１は、操作装置７を所定回転角度だけ正転方向Ｆと逆転方向Ｒに回転させたとき、該操作装置７を前記栓装置４に対してそれぞれねじ込み方向Ｄとねじ戻し方向Ｕに移動させ、前記所定回転角度を超えて回転させたとき、栓装置４を操作装置７に追従して回転させるように構成している。 (Connected Rotation Mechanism)
The connecting rotation mechanism 11 is configured so that when the operating device 7 is rotated in a forward direction F and a reverse direction R by a predetermined rotation angle, the operating device 7 moves in a screw-in direction D and an unscrewing direction U relative to the plug device 4, respectively, and when the operating device 7 is rotated beyond the predetermined rotation angle, the plug device 4 rotates in conjunction with the operating device 7.

連結回転機構１１の１例として、回転自在に挿入された上向き筒部６と下向き筒部９の相互において、一方の筒部に形成された螺旋溝１３と、他方の筒部に設けられて前記螺旋溝１３に摺動自在に嵌合された突部１４により構成することができる。図示実施形態の場合、下向き筒部９の外周面のうち直径方向に対向する２個所に螺旋溝１３を形成すると共に、下向き筒部９の下端から螺旋溝１３に向けて導入溝１３ａを形成しており、これに対して、上向き筒部６の内周面のうち直径方向に対向する２個所に突部１４を設けている。従って、下向き筒部９を上向き筒部６に挿入する際、前記突部１４は、導入溝１３ａから螺旋溝１３に導かれ、摺動自在に嵌合させられる。 As an example of the connecting rotation mechanism 11, the upward cylindrical portion 6 and the downward cylindrical portion 9, which are rotatably inserted, can be configured with a spiral groove 13 formed in one of the cylindrical portions and a protrusion 14 provided in the other cylindrical portion and slidably fitted into the spiral groove 13. In the illustrated embodiment, the spiral groove 13 is formed in two diametrically opposed locations on the outer circumferential surface of the downward cylindrical portion 9, and an introduction groove 13a is formed from the lower end of the downward cylindrical portion 9 toward the spiral groove 13. In contrast, the upward cylindrical portion 6 has two protrusions 14 provided in two diametrically opposed locations on its inner circumferential surface. Therefore, when the downward cylindrical portion 9 is inserted into the upward cylindrical portion 6, the protrusions 14 are guided from the introduction groove 13a into the spiral groove 13 and slidably fitted into it.

突部１４を螺旋溝１３に摺動自在に嵌合した状態で、操作装置７の下向き筒部９を正転方向Ｆに回動すると、螺旋溝１３の一方の端部に形成された端部１３ｆが上向き筒部６の突部１４に当接する。反対に、下向き筒部９を逆転方向Ｒに回動すると、螺旋溝１３の他方の端部に形成された端部１３ｒが上向き筒部６の突部１４に当接する。 When the downward tube portion 9 of the operating device 7 is rotated in the forward direction F with the protrusion 14 slidably fitted into the spiral groove 13, the end 13f formed at one end of the spiral groove 13 comes into contact with the protrusion 14 of the upward tube portion 6. Conversely, when the downward tube portion 9 is rotated in the reverse direction R, the end 13r formed at the other end of the spiral groove 13 comes into contact with the protrusion 14 of the upward tube portion 6.

従って、操作装置７は、螺旋溝１３の長さにより定められた所定回転角度だけ正転方向Ｆ又は逆転方向Ｒに回転したとき、突部１４を螺旋溝１３に沿って摺動させることにより、栓装置４に対して、ねじ込み方向Ｄ又はねじ戻し方向Ｕに移動する。 Therefore, when the operating device 7 rotates in the forward direction F or reverse direction R by a predetermined rotation angle determined by the length of the spiral groove 13, the protrusion 14 slides along the spiral groove 13, thereby moving in the screwing direction D or unscrewing direction U relative to the plug device 4.

そして、操作装置７は、前記所定回転角度を超えて正転方向Ｆ又は逆転方向Ｒに回転すると、螺旋溝１３の端部１３ｆ又は端部１３ｒが突部１４に当接することにより、栓装置４を操作装置７に追従して正転方向Ｆ又は逆転方向Ｒに回転させる。 Then, when the operating device 7 rotates in the forward direction F or reverse direction R beyond the specified rotation angle, the end 13f or end 13r of the spiral groove 13 abuts against the protrusion 14, causing the plug device 4 to rotate in the forward direction F or reverse direction R following the operating device 7.

図４に示すように、栓装置４の上向き筒部６の上端と、操作装置７の下向き筒部９の基端部に設けられたフランジ９aの間には、外気に通じる離間空間が形成されている。該空間は、図４（Ａ）に示すように、操作装置７を所定回転角度だけ正転方向Ｆ１に回転させることによりねじ込み方向Ｄ１に移動したときは、狭まり、図４（Ｂ）に示すように、操作装置７を所定回転角度だけ逆転方向Ｒ１に回転させることによりねじ戻し方向Ｕ１に移動させたときは、広がるようにされた可変隙間部Ｓを構成する。 As shown in Figure 4, a space that is open to the outside air is formed between the upper end of the upward cylindrical portion 6 of the plug device 4 and the flange 9a provided at the base end of the downward cylindrical portion 9 of the operating device 7. This space forms a variable gap portion S that narrows when the operating device 7 is moved in the screwing direction D1 by rotating the operating device 7 in the forward direction F1 by a predetermined rotation angle as shown in Figure 4(A), and widens when the operating device 7 is moved in the unscrewing direction U1 by rotating the operating device 7 in the reverse direction R1 by a predetermined rotation angle as shown in Figure 4(B).

（ガス抜き機構）
前記ガス抜き機構１２は、図５に示すように、前記上向き筒部６と下向き筒部９の間に形成された筒状のガス抜き通路１５と、該ガス抜き通路１５から上向き筒部６を貫通して外気に通じる分岐通路１６と、上向き筒部６の上側筒部６ｂに装着されたガス抜きパッキン１７により構成されている。 (Gas venting mechanism)
As shown in FIG. 5, the gas venting mechanism 12 is composed of a cylindrical gas venting passage 15 formed between the upward cylindrical portion 6 and the downward cylindrical portion 9, a branch passage 16 that passes through the upward cylindrical portion 6 from the gas venting passage 15 and leads to the outside air, and a gas venting gasket 17 attached to the upper cylindrical portion 6b of the upward cylindrical portion 6.

前記ガス抜き通路１５は、前記導入溝１３ａに臨んで下向き筒部９に貫設された連通路１５ａを介してボトル本体１の内部に連通させられており、上部に前記可変隙間部Ｓに臨む出口部１５ｂを設けている。この際、前記下向き筒部９の基端部に設けられたフランジ９ａは、前記出口部１５ｂに対面するシール面１８を形成している。 The gas vent passage 15 is connected to the inside of the bottle body 1 via a communication passage 15a that faces the introduction groove 13a and penetrates the downward cylindrical portion 9, and has an outlet portion 15b at the top that faces the variable gap portion S. In this case, the flange 9a provided at the base end of the downward cylindrical portion 9 forms a sealing surface 18 that faces the outlet portion 15b.

前記ガス抜きパッキン１７は、ゴム等の弾性材によりほぼ円筒状に一体成形され、上向き筒部６における分岐通路１６を含んで上側筒部６ｂの外周部を被覆する筒状シール部１７ａと、上側筒部６ｂの頂面を超えて延びる筒状シール部１７ａの上端１７ｂから内向きに周設されることにより上側筒部６ｂの頂面を被覆する環状の開閉用シール部１７ｃを備えている。この際、開閉用シール部１７ｃは、内周部に沿って上向きに突出するリブ部１７ｄを周設している。 The gas vent packing 17 is integrally molded into a substantially cylindrical shape from an elastic material such as rubber, and includes a cylindrical seal portion 17a that covers the outer periphery of the upper cylindrical portion 6b, including the branch passage 16 in the upward cylindrical portion 6, and an annular opening/closing seal portion 17c that covers the top surface of the upper cylindrical portion 6b by being provided inward from the upper end 17b of the cylindrical seal portion 17a that extends beyond the top surface of the upper cylindrical portion 6b. In this case, the opening/closing seal portion 17c is provided with a rib portion 17d that protrudes upward along the inner periphery.

図示実施形態の場合、筒状シール部１７ａの下端に内向きの周条１７ｅを設け、上向き筒部６の外周に前記周条１７ｅに嵌合する周溝６ｃを設けている。これにより、ガス抜きパッキン１７は、上部においては開閉用シール部１７ｃが上向き筒部６の頂面に係合し、下部においては周条１７ｅが周溝６ｃに係合するので、上向き筒部６の上下方向に関して位置決め状態で取付けることができる。 In the illustrated embodiment, an inwardly facing circumferential strip 17e is provided at the lower end of the cylindrical seal portion 17a, and a circumferential groove 6c that fits into the circumferential strip 17e is provided on the outer periphery of the upward cylindrical portion 6. As a result, the gas vent packing 17 can be attached in a position relative to the up-down direction of the upward cylindrical portion 6, with the opening/closing seal portion 17c engaging with the top surface of the upward cylindrical portion 6 at the upper portion and the circumferential strip 17e engaging with the circumferential groove 6c at the lower portion.

（連結回転機構とガス抜き機構の関係）
図４（Ａ）は、キャップユニット２をボトル本体１の筒口部１ａに装着ときの作用を示している。操作装置７は、所定回転角度だけ正転方向Ｆ１に回転したとき、栓装置４の内部においてねじ込み方向Ｄ１に移動する。これにより、前記可変隙間部Ｓが狭められてリブ部１７ｄを含む開閉用シール部１７ｃにより閉じられる。換言すると、前記シール面１８がガス抜きパッキン１７のリブ部１７ｄに密着し、前記出口部１５ｂをシールする。 (Relationship between the connecting rotation mechanism and the gas vent mechanism)
4A shows the action when the cap unit 2 is attached to the nozzle 1a of the bottle body 1. When the operating device 7 is rotated in the forward direction F1 by a predetermined rotation angle, it moves in the screwing direction D1 inside the plug device 4. As a result, the variable gap S is narrowed and closed by the opening and closing seal portion 17c including the rib portion 17d. In other words, the seal surface 18 comes into close contact with the rib portion 17d of the gas vent packing 17 to seal the outlet portion 15b.

所定回転角度を超えて更に操作装置７を正転方向に回転すると、これに追従して栓装置４が正転方向Ｆ２に回転させられるので、雄ネジ３aをボトル本体１の雌ネジ３ｂに螺合した状態で、ねじ込み方向Ｄ２に移動させることができ、シールパッキン２ａにより筒口部１ａをシールする。 When the operating device 7 is rotated further in the forward direction beyond the specified rotation angle, the stopper device 4 is rotated in the forward direction F2 accordingly, so that the male thread 3a can be moved in the screwing direction D2 while being screwed into the female thread 3b of the bottle body 1, and the nozzle 1a is sealed by the seal packing 2a.

図４（Ｂ）は、キャップユニット２をボトル本体１の筒口部１ａから取外すときの作用を示している。操作装置７は、所定回転角度だけ逆転方向Ｒ１に回転したとき、栓装置４の内部でねじ戻し方向Ｕ１に移動する。これにより、前記可変隙間部Ｓが広げられ、リブ部１７ｄを含む開閉用シール部１７ｃを通過する隙間を形成する。換言すると、前記シール面１８がガス抜きパッキン１７のリブ部１７ｄから離れることにより、前記出口部１５ｂを開放する。 Figure 4 (B) shows the action when the cap unit 2 is removed from the nozzle 1a of the bottle body 1. When the operating device 7 is rotated in the reverse direction R1 by a predetermined rotation angle, it moves in the unscrewing direction U1 inside the plug device 4. This causes the variable gap portion S to widen, forming a gap that passes through the opening and closing seal portion 17c including the rib portion 17d. In other words, the sealing surface 18 moves away from the rib portion 17d of the gas vent packing 17, thereby opening the outlet portion 15b.

図５は、ボトル本体１に炭酸飲料を収容した状態で筒口部１ａにキャップユニット２を装着した飲料保存状態を示しており、筒口部１ａは、シールパッキン２ａによりシールされている。ボトル本体１の内部は、ガスにより大気圧よりも高い所定圧力を生じている。ガスＧは、ボトル本体１の内部から連通路１５ａを介してガス抜き通路１５に進入し、ガス抜き通路１５の内部を所定圧力と同一圧力に保持する。このとき、ガス抜き通路１５の圧力は、分岐通路１６からガス抜きパッキン１７の筒状シール部１７ａに作用するが、分岐通路１６を閉鎖した筒状シール部１７ａの弾着力が勝ることにより、シール状態が保たれている。同時に、ガス抜き通路１５の圧力は、出口部１５ｂから開閉用シール部１７ｃ及びリブ部１７ｄに作用するが、シール面１８がリブ部１７ｄに圧着されているので、シール状態が保たれている。 Figure 5 shows the beverage storage state with the cap unit 2 attached to the nozzle 1a with the carbonated beverage contained in the bottle body 1, and the nozzle 1a is sealed by the seal packing 2a. The inside of the bottle body 1 generates a predetermined pressure higher than atmospheric pressure due to gas. Gas G enters the gas vent passage 15 from the inside of the bottle body 1 through the communication passage 15a and keeps the inside of the gas vent passage 15 at the same pressure as the predetermined pressure. At this time, the pressure of the gas vent passage 15 acts on the cylindrical seal portion 17a of the gas vent packing 17 from the branch passage 16, but the elastic force of the cylindrical seal portion 17a that closes the branch passage 16 is stronger, so the sealed state is maintained. At the same time, the pressure of the gas vent passage 15 acts on the opening and closing seal portion 17c and the rib portion 17d from the outlet portion 15b, but the seal surface 18 is pressed against the rib portion 17d, so the sealed state is maintained.

ところで、ボトル本体１の内部にガスによる所定圧力を超える高圧状態が生じたときは、ガス抜き通路１５の内部も高圧となるので、分岐通路１６を介して、図示鎖線で示すように、筒状シール部１７ａが外向きに弾性変形する。これにより、上向き筒部６の外周面に隙間が生じるので、ガスＧを外部に放出させることができる。その後、圧力が所定圧力に戻ると、筒状シール部１７ａが弾性復元し、分岐通路１６を閉鎖する。 When a high-pressure state caused by gas exceeds a predetermined pressure inside the bottle body 1, the inside of the gas vent passage 15 also becomes high pressure, and the cylindrical seal portion 17a elastically deforms outward through the branch passage 16, as shown by the dotted line in the figure. This creates a gap on the outer circumferential surface of the upward cylindrical portion 6, allowing the gas G to be released to the outside. Thereafter, when the pressure returns to the predetermined pressure, the cylindrical seal portion 17a elastically restores its original state, closing the branch passage 16.

この際、ガス抜きパッキン１７は、リブ部１７ｄがシール面１８により押圧されている反面、筒状シール部１７ａ及びその上端１７ｂは、外側から拘束される部材を有しておらず、自由に弾性変形可能な状態とされている。このため、超高圧の圧力が作用したとき、図示鎖線で示すように、上端１７ｂから下向きに延びる筒状シール部１７ａが適度に弾性変形する。 At this time, while the rib portion 17d of the gas vent packing 17 is pressed by the sealing surface 18, the cylindrical seal portion 17a and its upper end 17b are not restrained from the outside and are in a state in which they can freely elastically deform. Therefore, when ultra-high pressure is applied, the cylindrical seal portion 17a extending downward from the upper end 17b elastically deforms appropriately, as shown by the dashed line in the figure.

図示実施形態の場合、ガス抜きパッキン１７は、筒状シール部１７ａを上向き筒部６の外周面の全体を包囲して弾着しており、前記分岐通路１６は、上向き筒部６の直径方向の２個所に位置して貫設された小孔により形成されている。従って、ボトル本体１の内部圧力がキャップユニット２と筒口部１ａの相互に螺着されたネジ３a、３ｂを変形させるほどの超高圧状態に近づいたときにだけ、筒状シール部１７ａが分岐通路１６を外部に向けて開放させるように構成されている。換言すると、超高圧ではない常圧状態においては、ボトル本体１の内部に充満するガスが外部に漏洩するおそれはなく、炭酸飲料が気の抜けた飲料になることはない。 In the illustrated embodiment, the gas vent gasket 17 is elastically attached to the cylindrical seal portion 17a, surrounding the entire outer circumferential surface of the upward cylindrical portion 6, and the branch passage 16 is formed by small holes that penetrate the upward cylindrical portion 6 at two locations in the diametrical direction. Therefore, the cylindrical seal portion 17a is configured to open the branch passage 16 to the outside only when the internal pressure of the bottle body 1 approaches an ultra-high pressure state that is sufficient to deform the threads 3a, 3b that are screwed together between the cap unit 2 and the cylindrical mouth portion 1a. In other words, in a normal pressure state that is not ultra-high pressure, there is no risk of the gas filling the inside of the bottle body 1 leaking out to the outside, and the carbonated drink will not become flat.

（作用）
図６は、キャップユニット２をボトル本体１の筒口部１ａに装着するときの作用を示している。図７は、炭酸飲料を収容したボトル本体１をキャップユニット２により密閉した飲料保存状態において、内部が所定圧力以下の常圧とされているときの作用を示している。図８は、前記飲料保存状態において、内部が所定圧力を超える超高圧状態とされたときの作用を示している。図９は、前記飲料保存状態から、操作装置７を所定回転角度だけ逆転回動したときの作用を示している。図１０は、所定回転角度を超えて操作装置７を逆転回動したときの作用を示している (Action)
Fig. 6 shows the action when the cap unit 2 is attached to the nozzle 1a of the bottle body 1. Fig. 7 shows the action when the inside of the bottle is at normal pressure below a predetermined pressure in a beverage preservation state in which the bottle body 1 containing a carbonated beverage is sealed by the cap unit 2. Fig. 8 shows the action when the inside of the bottle is at an ultra-high pressure state exceeding a predetermined pressure in the beverage preservation state. Fig. 9 shows the action when the operating device 7 is rotated in the reverse direction by a predetermined rotation angle from the beverage preservation state. Fig. 10 shows the action when the operating device 7 is rotated in the reverse direction beyond the predetermined rotation angle.

図６（Ａ）に示すように、キャップユニット２は、操作装置７を所定回転角度だけ正転方向Ｆ１に回転すると、栓装置４の内部に向けてねじ込み方向Ｄ１に移動する。そして、更に、所定回転角度を超えて操作装置７を正転方向Ｆ１に回転すると、栓装置４を追従して正転方向Ｆ２に回転させることができる。従って、図６（Ｂ）に示すように、栓装置４の雄ネジ３ｂをボトル本体１の筒口部１ａの雌ネジ３ａに螺合させ、該栓装置４を正転方向Ｆ２に回転してねじ込み方向Ｄ２に移動することにより、キャップユニット２を筒口部１ａに装着することができる。このとき、操作装置７のシール面１８は、ガス抜きパッキン１７における開閉用シール部１７ｃのリブ部１７ｄを圧着し、ガス抜き通路１５の出口部１５ｂを密閉している。 As shown in FIG. 6(A), when the operating device 7 is rotated in the forward direction F1 by a predetermined rotation angle, the cap unit 2 moves in the screwing direction D1 toward the inside of the plug device 4. When the operating device 7 is further rotated in the forward direction F1 beyond the predetermined rotation angle, the plug device 4 can be rotated in the forward direction F2 accordingly. Therefore, as shown in FIG. 6(B), the male thread 3b of the plug device 4 is screwed into the female thread 3a of the nozzle 1a of the bottle body 1, and the plug device 4 is rotated in the forward direction F2 to move in the screwing direction D2, so that the cap unit 2 can be attached to the nozzle 1a. At this time, the seal surface 18 of the operating device 7 presses against the rib portion 17d of the opening and closing seal portion 17c of the gas vent packing 17, sealing the outlet portion 15b of the gas vent passage 15.

炭酸飲料を収容したボトル本体１をキャップユニット２により密閉した飲料保存状態において、図７（Ａ）に示すように、炭酸飲料から生じるガスにより、ボトル本体１の内部には、大気圧以上の圧力が生じる。図示のように、圧力が所定圧力ＰＮ、つまり、常圧とされているときは、該圧力が外部に漏洩することはない。図７（Ｂ）に示すように、ガス抜き通路１５の出口部１５ｂは、ガス抜きパッキン１７のリブ部１７ｄを含む開閉用シール部１７ｃがシール面１８に圧着された状態で、気密的に閉鎖されている。また、分岐路１６は、筒状シール部１７ａにより、気密的に閉鎖されている。 When the bottle body 1 containing a carbonated beverage is sealed by the cap unit 2 to store the beverage, as shown in FIG. 7(A), the gas generated from the carbonated beverage generates a pressure equal to or greater than atmospheric pressure inside the bottle body 1. As shown in the figure, when the pressure is a predetermined pressure PN, i.e., normal pressure, the pressure does not leak to the outside. As shown in FIG. 7(B), the outlet portion 15b of the gas vent passage 15 is airtightly closed with the opening/closing seal portion 17c, including the rib portion 17d of the gas vent packing 17, pressed against the seal surface 18. In addition, the branch passage 16 is airtightly closed by the cylindrical seal portion 17a.

ところで、飲料保存状態において、炭酸飲料の温度が上昇したり、炭酸飲料の収容量が減少することによりボトル本体１の内部における飲料未充填の空洞部が拡大したりしたとき、炭酸飲料から生じるガスが増加することにより、図８（Ａ）に示すように、ボトル本体１の内部は、所定圧力を超える超高圧ＰＸとされた状態となり、ネジ３ａ、３ｂを変形させてキャップユニット２が飛ぶ、つまり、暴発を起こすおそれがある。この場合、図８（Ｂ）に示すように、ガス抜き通路１５に生じる超高圧ＰＸの圧力が分岐通路１６から筒状シール部１７ａの内周面に作用して弾性変形させ、上向き筒部６の外周に形成された隙間を介して、ガスの圧力を外部に放出させる。これにより、ボトル本体１の内部は、上述した所定圧力ＰＮに戻り、筒状シール部１７ａが復元することにより再び分岐通路１６をシールする。この際、上向き筒部６と筒状シール部１７ａの間から排出されるガスは、操作装置７の周壁８ｂの内周部に向けて放出される。 However, when the temperature of the carbonated beverage rises or the amount of carbonated beverage decreases during beverage storage, causing the empty space inside the bottle body 1 to expand, the amount of gas generated from the carbonated beverage increases, and as shown in FIG. 8(A), the inside of the bottle body 1 becomes an ultra-high pressure PX exceeding the predetermined pressure, which may cause the screws 3a and 3b to deform and the cap unit 2 to fly off, that is, cause an explosion. In this case, as shown in FIG. 8(B), the pressure of the ultra-high pressure PX generated in the gas vent passage 15 acts on the inner surface of the cylindrical seal portion 17a from the branch passage 16, causing elastic deformation, and the gas pressure is released to the outside through the gap formed on the outer periphery of the upward cylindrical portion 6. As a result, the inside of the bottle body 1 returns to the above-mentioned predetermined pressure PN, and the cylindrical seal portion 17a is restored to its original state, sealing the branch passage 16 again. At this time, the gas discharged between the upward cylindrical portion 6 and the cylindrical seal portion 17a is released toward the inner periphery of the peripheral wall 8b of the operating device 7.

炭酸飲料を飲用するときは、ボトル本体１の筒口部１ａからキャップユニット２を取外し、開放された筒口部１ａから飲料を注出する。この際、上述のように、ボトル本体１の内部は、大気圧よりも高い所定圧力ＰＮに保持されているので、炭酸飲料が勢いよく噴き出して、衣服等を汚損するおそれがある。この点に関して、図９（Ａ）に示すように、栓装置４が筒口部１ａにねじ込まれた状態で、操作装置７を逆転方向Ｒ１に回動すると、操作装置７は、栓装置４からねじ戻し方向Ｕ１に移動し、このとき、シール面１８をガス抜きパッキン１７のリブ部１７ｄから離反させ、ガス抜き通路１５の出口部１５ｂを開放する。従って、図９（Ｂ）に示すように、所定圧力ＰＮとされたガスが出口部１５ｂから外部に放出され、これにより、ボトル本体１の内部を大気圧となるように減圧する。この際、出口部１５ｂから排出されるガスは、操作装置７の周壁８ｂの内周部に向けて放出される。 When drinking a carbonated beverage, the cap unit 2 is removed from the nozzle 1a of the bottle body 1, and the beverage is poured from the opened nozzle 1a. At this time, as described above, the inside of the bottle body 1 is maintained at a predetermined pressure PN higher than atmospheric pressure, so the carbonated beverage may spurt out with force and cause damage to clothing, etc. In this regard, as shown in FIG. 9(A), when the operating device 7 is rotated in the reverse direction R1 with the plug device 4 screwed into the nozzle 1a, the operating device 7 moves from the plug device 4 in the unscrewing direction U1, at which time the sealing surface 18 is separated from the rib portion 17d of the gas vent packing 17, and the outlet portion 15b of the gas vent passage 15 is opened. Therefore, as shown in FIG. 9(B), gas at the predetermined pressure PN is released from the outlet portion 15b to the outside, thereby reducing the pressure inside the bottle body 1 to atmospheric pressure. At this time, the gas discharged from the outlet 15b is released toward the inner periphery of the peripheral wall 8b of the operating device 7.

図１０に示すように、操作装置７を逆転方向Ｒ１に回転し続けると、所定回転角度を超えたときから、栓装置４が追従して逆転方向Ｒ２に回転させられ、ねじ戻し方向Ｕ２に移動することにより、筒口部１ａから取外される。上述のように、取外しに先立ち、減圧されているので、炭酸飲料が噴き出すことない。 As shown in FIG. 10, when the operating device 7 continues to rotate in the reverse direction R1, once a predetermined rotation angle has been exceeded, the plug device 4 follows and is rotated in the reverse direction R2, and is removed from the nozzle 1a by moving in the unscrewing direction U2. As described above, the pressure is reduced prior to removal, so the carbonated beverage does not spray out.

Ｆ正転方向
Ｄねじ込み方向
Ｒ逆転方向
Ｕねじ戻し方向
Ｑ炭酸飲料
Ｓ可変隙間部
１ボトル本体
１ａ筒口部
２キャップユニット
２ａシールパッキン
３ａ雌ネジ
３ｂ雄ネジ
４栓装置
５下端部
６上向き筒部
６ａ下側筒部
６ｂ上側筒部
６ｃ周溝
７操作装置
８操作体
８ａ頂部
８ｂ周壁
９下向き筒部
９ａフランジ
９ｂ隔壁
１０断熱材
１１連結回転機構
１２ガス抜き機構
１３螺旋溝
１３ａ導入溝
１３ｆ、１３ｒ端部
１４突部
１５筒状のガス抜き通路
１５ａ連通路
１５ｂ出口部
１６分岐通路
１７ガス抜きパッキン
１７ａ筒状シール部
１７ｂ上端
１７ｃ環状の開閉用シール部
１７ｄリブ部
１７ｅ周条
１８シール面 F Normal rotation direction D Screwing direction R Reverse direction U Unscrewing direction Q Carbonated beverage S Variable gap portion 1 Bottle body 1a Cylindrical mouth portion 2 Cap unit 2a Seal packing 3a Female thread 3b Male thread 4 Plug device 5 Lower end portion 6 Upward cylindrical portion 6a Lower cylindrical portion 6b Upper cylindrical portion 6c Circumferential groove 7 Operating device 8 Operating body 8a Top portion 8b Peripheral wall 9 Downward cylindrical portion 9a Flange 9b Partition wall 10 Thermal insulation material 11 Linking rotation mechanism 12 Gas venting mechanism 13 Spiral groove 13a Introduction grooves 13f, 13r End portion 14 Projection portion 15 Cylindrical gas vent passage 15a Communication passage 15b Outlet portion 16 Branch passage 17 Gas vent packing 17a Cylindrical seal portion 17b Upper end 17c Annular opening and closing seal portion 17d Rib portion 17e Circumferential strip 18 Sealing surface

Claims

The bottle is provided with an insulating bottle body (1) having a female screw (3a) at a nozzle portion (1a), and a cap unit (2) that closes the nozzle portion so as to be freely opened and closed by a male screw (3b) that screws into the female screw, and is configured so that a carbonated beverage contained in the bottle body can be poured from the nozzle portion, and the male screw moves in a screw-in direction (D) by a forward rotation (F) relative to the female screw, and moves in an unscrewing direction (U) by a reverse rotation (R),
The cap unit (2) includes a plug device (4) having a seal packing (2a) that airtightly seals the inner periphery of the nozzle by screwing the male screw into the nozzle, and an operating device (7) that rotates the plug device forward and backward from above the nozzle,
The plug device and the operating device are combined by inserting the upward cylindrical portion (6) and the downward cylindrical portion (9) into each other, and a connecting rotation mechanism (11) is provided, which is configured to move the operating device (7) in the screw-in direction and the screw-out direction, respectively, relative to the plug device (4) when the operating device (7) is rotated in the forward direction and the reverse direction by a predetermined rotation angle, and to rotate the plug device (4) following the operating device when the operating device is rotated beyond the predetermined rotation angle,
Furthermore, a variable gap (S) is formed between the plug device and the operating device, and is open to the outside air. The variable gap (S) narrows when the operating device (7) is moved in the screw-in direction and widens when the operating device (7) is moved in the unscrewing direction.
The cap unit (2) is provided with a gas vent passage (15) communicating with the inside of the bottle body and a gas vent packing (17),
The gas vent passage (15) includes a branch passage (16) penetrating the cylindrical portion (6) and communicating with the outside air, and an outlet portion (15b) facing the variable gap portion (S),
the gas vent packing (17) is integrally formed with a cylindrical seal portion (17a) covering the cylindrical portion (6) including the branch passage (16) and an opening/closing seal portion (17c) inserted into the variable gap portion (S), and is configured such that when the variable gap portion (S) is narrowed from its widened state, the gap portion is closed by the opening/closing seal portion (17c) to seal the outlet portion (15b);
When a high pressure state exceeding a predetermined pressure occurs inside the bottle body due to gas in a sealed beverage storage state by attaching a cap unit to the cylindrical mouth of the bottle body containing a carbonated beverage, the gas is discharged to the outside through a gas vent passage (15) and a branch passage (16) by elastically deforming the cylindrical seal portion (17a),
a variable gap portion (S) that is widened when the operating device (7) is screwed back by the specified rotation angle from the beverage storage state, thereby allowing gas filling the inside of the bottle body to pass through the opening/closing seal portion (17c) and be released to the outside from the outlet portion (15b).

The bottle is provided with an insulating bottle body (1) having a female screw (3a) at a nozzle portion (1a), and a cap unit (2) that closes the nozzle portion so as to be freely opened and closed by a male screw (3b) that screws into the female screw, and is configured so that a carbonated beverage contained in the bottle body can be poured from the nozzle portion, and the male screw moves in a screw-in direction (D) by a forward rotation (F) relative to the female screw, and moves in an unscrewing direction (U) by a reverse rotation (R),
The cap unit (2) includes a plug device (4) having a seal packing (2a) that airtightly seals the inner periphery of the nozzle by screwing the male screw into the nozzle, and an operating device (7) that rotates the plug device forward and backward from above the nozzle,
The plug device and the operating device are provided with a connecting rotation mechanism (11) configured to insert the downward cylindrical portion (9) of the operating device into the upward cylindrical portion (6) of the plug device, and to move the operating device (7) in the screw-in direction and the screw-out direction, respectively, inside the plug device (4) when the operating device (7) is rotated in the forward direction and the reverse direction by a predetermined rotation angle relative to both cylindrical portions (6) and (9), and to rotate the plug device (4) following the operating device when the operating device (7) is rotated beyond the predetermined rotation angle;
Between the upward cylindrical portion (6) and the downward cylindrical portion (9), a variable gap portion (S) is formed which narrows when the operating device (7) is moved in the screw-in direction and widens when the operating device (7) is moved in the screw-out direction.
The cap unit (2) has a gas vent passage (15) formed therein and a gas vent packing (17) provided in the upward cylindrical portion (6).
the gas vent passage (15) includes a communication passage (15a) communicating with the inside of the bottle body, an outlet portion (15b) communicating with the outside air via the variable gap portion (S), and a branch passage (16) communicating with the outside air via a hole provided through the upward cylindrical portion (6);
the gas vent packing (17) includes an opening/closing seal portion (17c) that is disposed in the variable gap portion (S) facing the outlet portion (15b), and a cylindrical seal portion (17a) that covers the outer periphery of the upward cylindrical portion (6) including the branch passage (16),
The bottle body is configured such that a carbonated beverage is contained therein, the variable gap portion (S) is narrowed to thereby compress the opening/closing seal portion (17c) to seal the outlet portion (15b), and the plug device (4) is screwed in to thereby seal the cylindrical mouth portion (1a) with the seal packing (2a), so that when a high pressure state exceeding a predetermined pressure occurs inside the bottle body due to gas while the bottle body is sealed to store the beverage, gas is released to the outside via the gas vent passage (15) and the branch passage (16) by elastically deforming the cylindrical seal portion (17a),
A carbonated beverage bottle characterized in that, when the operating device (7) is screwed back by the specified rotation angle from the beverage storage state, the variable gap portion (S) expands, thereby releasing gas that has filled the inside of the bottle body to the outside from the outlet portion (15b).

The bottle is provided with an insulating bottle body (1) having a female screw (3a) at a nozzle portion (1a), and a cap unit (2) that closes the nozzle portion so as to be freely opened and closed by a male screw (3b) that screws into the female screw, and is configured so that a carbonated beverage contained in the bottle body can be poured from the nozzle portion, and the male screw moves in a screw-in direction (D) by a forward rotation (F) relative to the female screw, and moves in an unscrewing direction (U) by a reverse rotation (R),
The cap unit (2) includes a plug device (4) provided with a seal packing (2a) that airtightly seals the inner periphery of the nozzle by screwing in the male screw, and an operating device (7) that rotates the plug device forward and backward from above the nozzle, and is constructed by inserting a downward cylindrical portion (9) of the operating device into an upward cylindrical portion (6) of the plug device,
A connecting rotation mechanism (11) and a gas vent mechanism (12) are provided between the plug device (4) and the operating device (9),
The connecting rotation mechanism (11) is configured to move the operating device (7) in a screw-in direction and a screw-out direction relative to the plug device (4) when the operating device (7) is rotated in a forward direction and a reverse direction by a predetermined rotation angle, respectively, and to rotate the plug device (4) following the operating device when the operating device (7) is rotated beyond the predetermined rotation angle,
The gas venting mechanism (12) is
a cylindrical gas vent passage (15) formed between the upward cylindrical portion (6) and the downward cylindrical portion (9), the lower portion of which communicates with the inside of the bottle body, and the upper portion of which has an outlet portion (15b);
a branch passage (16) extending from the gas vent passage through the upward cylindrical portion (6);
a gas vent packing (17) including an annular opening/closing seal portion (17c) facing the outlet portion (15b) and covering an upper end portion of the upward cylindrical portion (6), and a cylindrical seal portion (17a) covering an outer periphery of the upward cylindrical portion (6) including the branch passage (16);
a sealing surface (18) formed from a base of the downward cylindrical portion (9) of the operating device (7) to face an outlet portion (15b) of the gas vent passage (15) and an opening/closing seal portion (17c);
The bottle body is configured such that a carbonated beverage is contained therein, the nozzle portion (1a) is sealed with the seal packing (2a) of the plugging device (4), and the outlet portion (15b) is sealed by bringing the seal surface (18) of the operating device (7) into close contact with the opening/closing seal portion (17c). In this state, when a high pressure state exceeding a predetermined pressure is generated inside the bottle body, the gas is released to the outside through the gas vent passage (15) and the branch passage (16) by elastically deforming the cylindrical seal portion (17a).
a bottle for storing a carbonated beverage, the bottle being configured so that, when the operating device (7) is screwed back by the specified rotation angle from the beverage storage state, the sealing surface (18) separates from the opening/closing seal portion (17c), thereby releasing gas that has filled inside the bottle body to the outside through the outlet portion (15b).

The gas vent packing (17) has the opening/closing seal portion (17c) provided inwardly from the upper end (17b) of the cylindrical seal portion (17a) and has a rib portion (17d) provided around the opening/closing seal portion so as to protrude upward along the inner periphery thereof,
4. The carbonated beverage bottle according to claim 1, 2 or 3, characterized in that, in the beverage storage state, the rib portion (17d) is compressed by the sealing surface (18) of the operating device, but the upper surface of the cylindrical seal portion (17a) is spaced from the sealing surface (18).

The connecting and rotating mechanism (11) is configured by a spiral groove (13) formed on one of the rotatably inserted upward cylindrical portion (6) of the plug device and the downward cylindrical portion (9) of the operating device, and a protrusion (14) provided on the other cylindrical portion and slidably fitted into the spiral groove,
When the operating device (7) is rotated in a forward direction and a reverse direction by a predetermined rotation angle, the protrusion (14) slides along the spiral groove (13), thereby moving the operating device in a screw-in direction and a screw-out direction relative to the plug device (4),
4. A carbonated beverage bottle according to claim 1, 2 or 3, characterized in that, when the bottle is rotated beyond the predetermined rotation angle, the protrusion (14) abuts against the end of the spiral groove (13), thereby causing the plug device (4) to rotate in conjunction with the operating device.