JPH0958712A - Cap for lemon pop bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the title cap achieved in the reduction of cost by intergrally producing the same from a single synthetic resin material, constantly keeping the hardness of a plug closing state even under such a condition that the error of the outer shape of the bottle mouth part of a lemon pop bottle and the error of a sphere exert adverse effect with each other and not generating a problem to the falling of the sphere or the shift of a packing at a time of plugging. SOLUTION: A cap for a lemon pop bottle consists of a main body integrally formed from a single synthetic resin material and the sphere B held by the main body. The main body is equipped with the outer cylinder 1 of which the inner surface comes into contact with a bottle mouth part 8 at a time of opening, the inner cylinder 3 equipped with the annular projection 2 closely coming into contact with the inner surface of the bottle mouth part 8 at a time of opening and the holding cylinder 4 provided to the inside of the inner cylinder 3 to come into contact with the sphere B through the inner surface thereof and the stress absorbing layer C making the deformation of the inner cylinder 3 hard to propagate to the holding cylinder 4 at a time of closing is provided between the inner cylinder 3 and the holding cylinder 4.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、単一の樹脂材料に
よって一体的に形成されたラムネ瓶用のキャップに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Ramune bottle cap integrally formed of a single resin material.

【０００２】[0002]

【従来の技術】最近のラムネ瓶は、充填作業の簡素化や
製造コスト低減のために球体を保持させたキャップを内
容液充填後のラムネ瓶のびん口部に打栓機で打栓する製
造方法が一般的となっている。また、この打栓機の衝撃
に耐え得る構造として例えば実開平２−８７４２号公報
のラムネ瓶のように、球体保持付近を軟質の樹脂で、そ
の外周を硬質の樹脂材料で一体形成した技術が開示され
ているが、この特殊な製造に対して高コストとなる問題
が指摘されていた。一方、実公平３−３８８１２３号公
報に開示されているように球体保持用のパッキン部材
と、びん口との係合を受け持つ注口出口部材とが組合わ
さった複合形式が比較的一般的に使用されているが、打
栓時の衝撃に対して球体保持状態が不安定となったり、
この衝撃によってパッキン部材と注口出口部材との係合
状態が不安定となったりする問題が指摘されていた。2. Description of the Related Art A recent Ramune bottle is manufactured by capping a cap holding a sphere into a bottle mouth of a Ramune bottle after filling a content liquid with a capping machine in order to simplify the filling work and reduce the manufacturing cost. The method has become commonplace. Further, as a structure capable of withstanding the impact of this stoppering machine, for example, as in a Ramune bottle disclosed in Japanese Utility Model Laid-Open No. 2-8742, there is a technique in which a spherical resin holding portion is integrally formed of a soft resin and an outer periphery thereof is formed of a hard resin material. Although disclosed, it has been pointed out that this particular manufacture has a high cost problem. On the other hand, as disclosed in Japanese Utility Model Publication No. 3-388123, a composite type in which a packing member for holding a sphere and a spout outlet member responsible for engagement with a bottle mouth are combined is relatively commonly used. However, the ball holding state becomes unstable against the impact at the time of tapping,
It has been pointed out that this impact makes the engagement between the packing member and the spout outlet member unstable.

【０００３】[0003]

【発明が解決しようとする課題】ところで、通常ガラス
で形成されるびん口部および球体は、何れもその精度に
は限界があり、一定の誤差が生じている。その誤差はラ
ムネ瓶以外の通常の瓶に対しては問題は生じない程度で
ある。しかしながら、ラムネ瓶の場合にはびん口部の口
径と直列的に関与する球体の直径は、各々の誤差が直列
的に影響しあう場合がある。つまり、びん口部と球体の
形状誤差は足し合わされて影響を及ぼすことがあり、そ
の結果として極めて開栓し難い硬い閉栓状態、あるいは
逆に緩い閉栓状態となる。そして太陽光で加熱された車
中の環境下で放置したようにラムネ瓶内の内圧が異常に
上がった場合では内溶液の液漏れが生じる可能性があっ
た。By the way, the bottle mouth portion and the sphere, which are usually made of glass, have a limited accuracy and a certain error occurs. The error does not cause a problem for ordinary bottles other than Ramune bottles. However, in the case of a Ramune bottle, each error may affect each other in series in the diameter of the sphere which is serially related to the diameter of the bottle mouth. That is, the shape error between the bottle mouth portion and the sphere may be added and may have an effect, resulting in a hard closed state in which it is extremely difficult to open the opening, or conversely a loose closed state. If the internal pressure in the Ramune bottle rises abnormally as if it had been left in the environment of a vehicle heated by sunlight, the internal solution may leak.

【０００４】所で、このような欠点を除去するために通
常のラムネキャップでは、必ず球体保持用のパッキン部
材を併用しているが、上述の通り打栓時の衝撃でのパッ
キングのずれが指摘されていた。また、パッキン部材を
内設したキャップを更にコストを低減させようとした場
合、キャップの素材を単一の樹脂材料で作ることが考え
られるが、このキャップを利用したラムネ瓶を上述のよ
うな高温の車中で使用した場合、内圧に耐えられずに内
溶液の漏れが生じたり（特に全体を軟質な樹脂材料で作
った場合）、あるいはびん口の内方からの圧力の逃げ場
が無くなり、びん口が割れる確率が高くなっていた（全
体を硬質な樹脂材料で作った場合）。また、球体保持付
近を軟質の樹脂で、その外周を硬質の樹脂材料で一体成
形した従来技術では、一体型ならではのコスト低減の目
的が達せられないという重大な課題が残ってしまった。However, in order to eliminate such a defect, in a normal Ramune cap, a packing member for holding a sphere is always used together. However, as described above, the deviation of the packing due to the impact at the time of tapping is pointed out. It had been. In order to further reduce the cost of the cap with the packing member, it is possible to use a single resin material for the cap. When used in a car, the internal solution may not be able to withstand and leakage of the internal solution may occur (especially when the whole is made of a soft resin material), or the pressure escape from the inside of the bottle mouth may disappear. There was a high probability that the mouth would crack (when made entirely of hard resin material). Further, in the conventional technique in which the vicinity of the sphere is made of a soft resin and the outer periphery of the sphere is integrally made of a hard resin material, there remains a serious problem that the purpose of cost reduction which can be achieved by the integrated type cannot be achieved.

【０００５】本発明では、単一の合成樹脂材料において
一体的に製造することで、低コストを図るとともに、こ
のようなラムネ瓶のびん口部の外形誤差と球体の直径の
誤差が、足し合わされて悪影響を及ぼすような条件下に
おいてもその閉栓状態の硬さを一定に保ち、しかも打栓
時における球体の落下やパッキンのずれに対しても問題
のないラムネ瓶用のキャップを提供することを課題とし
ている。In the present invention, the cost is reduced by integrally manufacturing with a single synthetic resin material, and the outer shape error of the bottle mouth portion of the Ramune bottle and the error of the diameter of the sphere are added together. It is necessary to provide a cap for Ramune bottles that keeps the hardness of the capped state constant even under adverse conditions, and does not have a problem even when the ball falls or the packing shifts when the cap is closed. It is an issue.

【０００６】[0006]

【課題を解決するための手段】上記の目的を達成するた
めに、請求項１の発明は、単一の合成樹脂材料によって
一体的に形成された本体と、該本体に抱持される球体と
から成り、該本体が、閉栓時に内面がびん口と接触する
外筒と、閉栓時にびん口部の内面と密接する輪状突起を
備える内筒と、該内筒の内側に設けられ内面が該球体と
接触する抱持筒とを備え、内筒と抱持筒との間に閉栓時
に該内筒の変形を抱持筒へ伝わり難くする応力吸収層を
設けたことを特徴としている。In order to achieve the above-mentioned object, the invention of claim 1 has a main body integrally formed of a single synthetic resin material, and a sphere held by the main body. The main body is composed of an outer cylinder whose inner surface contacts the bottle mouth when closed, an inner cylinder having a ring-shaped projection that is in close contact with the inner surface of the bottle mouth when closed, and an inner surface provided on the inner side of the spherical body. It is characterized in that a stress absorbing layer is provided between the inner cylinder and the holding cylinder, which makes it difficult to transmit the deformation of the inner cylinder to the holding cylinder when the cap is closed.

【０００７】[0007]

【作用】本発明は、上記のように構成されているので、
請求項１の発明によれば、次の作用を生ずる。即ち、本
体は合成樹脂材料によって一体的に形成されており、パ
ッキン部材のずれが構造上回避されている。また、外筒
および輪状突起を備えた内筒とによってびん口部を内外
から挟み込んでいる。一方、この内筒の内側に設けられ
る該球体B保持用の抱持筒を応力吸収層を隔てて内筒内
に設けているので、閉栓時に内筒が大きく変形した場合
にも、その変形はこの応力吸収層で吸収される。また、
同様な理由で、万が一球体が予定の寸法を超える大きな
直径（但し公差範囲内）を有する場合にも、抱持筒4の
変形はこの応力吸収層Cで吸収されて内筒へはその力は
達し難くなる。同様に、びん口の口径が予定の寸法より
も小さく（但し公差範囲内）、内筒を中心方向に変形さ
せるような状況であっても、この応力吸収層でその変形
は吸収されて、抱持筒へはその力は達し難くなる。The present invention is configured as described above.
According to the first aspect of the invention, the following operation is provided. That is, the main body is integrally formed of a synthetic resin material, and the shift of the packing member is structurally avoided. Further, the bottle mouth portion is sandwiched between the inside and the outside by the outer cylinder and the inner cylinder having the ring-shaped projection. On the other hand, since the holding cylinder for holding the spherical body B provided inside the inner cylinder is provided inside the inner cylinder with the stress absorbing layer interposed therebetween, even if the inner cylinder is largely deformed at the time of closing the cap, the deformation does not occur. It is absorbed by this stress absorption layer. Also,
For the same reason, even if the sphere has a large diameter (but within the tolerance range) exceeding the predetermined size, the deformation of the holding cylinder 4 is absorbed by the stress absorbing layer C and the force is not applied to the inner cylinder. Hard to reach. Similarly, even if the diameter of the bottle mouth is smaller than the predetermined size (but within the tolerance range) and the inner cylinder is deformed toward the center, the deformation is absorbed by the stress absorbing layer, and the stress is absorbed. It becomes difficult to reach the holding cylinder.

【０００８】また、請求項２の発明によれば、請求項１
の作用に加えて、内筒と抱持筒との各々の飲み口側を接
続すると共に該内筒と抱持筒との各々のびん側を離間さ
せて空所を形成した構造によって該応力吸収層を形成し
ており、従って上記空所はびん側に向かって開口してお
り、ラムネ特有の高圧ガスはこの空所に向かって圧力が
加わる。そして、ラムネ内の圧力が高くなると、内筒は
びん口部へ向かって力が加わる。一方、抱持筒は球体に
向かって力が加わるように作用する。According to the invention of claim 2, claim 1
In addition to the effect of the above, the stress absorption is achieved by the structure in which the mouths of the inner cylinder and the holding cylinder are connected and the bottle sides of the inner cylinder and the holding cylinder are separated from each other to form a space. It forms a layer, so that the cavity is open towards the bottle side and the high-pressure gas peculiar to Ramune is under pressure towards this cavity. Then, when the pressure inside the ramunes increases, a force is applied to the inner cylinder toward the bottle mouth portion. On the other hand, the holding tube acts so that a force is applied to the sphere.

【０００９】また、請求項３の発明によれば、請求項１
の作用に加えて、内筒の長さを少なくとも該球体の略中
心を越える位置まで設けている。即ち、その内筒のスト
ロークを球体の中心位置よりもびん側へ延長させたこと
で、打栓時の閉栓過程の軸方向の歪みを防止している。Further, according to the invention of claim 3, according to claim 1
In addition to the above function, the length of the inner cylinder is provided at least to a position beyond the substantial center of the sphere. That is, by extending the stroke of the inner cylinder to the bottle side from the center position of the sphere, axial distortion in the cap closing process at the time of stoppering is prevented.

【００１０】また、請求項４の発明によれば、請求項１
の作用に加えて、つぎの作用を備えている。即ち、抱持
筒と球体とが、飲み口側で接触すると共にびん側でも接
触し、これら接触の何れか一方の接触によって抱持筒と
球体とが密封状態となるように形成している。従って、
球体は軸方向の上下で保持される構造となる。According to the invention of claim 4, claim 1
In addition to the action of, the following actions are provided. That is, the holding tube and the sphere are in contact with each other on the side of the mouth and also with the bottle, and the holding tube and the sphere are sealed by one of these contacts. Therefore,
The sphere has a structure in which it is held up and down in the axial direction.

【００１１】また、請求項５の発明によれば、請求項４
の作用に加えて、つぎの作用を備えている。即ち、球体
の飲み口側の接触は抱持筒の飲み口側に略内方に向かっ
て設けた鋭い先端形状のエッジ部を介して接触してい
る。また、このエッジ部は球体に対してエッジ先端部が
歪む程度に相対的に力が加わることにより確実な密封状
態が成される。そこで、抱持筒4の端部に軸方向に多数
のガス抜き溝を設け、この抱持筒の端部でびん側の球体
と接触させている。このガス抜き溝によって、抱持筒の
びん側端部は周方向に離間する。即ち、球体に対して抱
持筒のびん側端部の初期の形状をかなり狭くしても、球
体はこの端部が周方向に開くようにして通過が可能であ
り、通過後において閉じたこの端部は、球体の形状の大
小に関わらず（但し公差範囲内）安定して球体をびん口
部側へ押しつける力が得られる。According to the invention of claim 5, claim 4
In addition to the action of, the following actions are provided. That is, the contact of the sphere on the side of the mouth comes into contact with the mouth of the holding tube through an edge portion having a sharp tip shape provided substantially inward. Further, a force is relatively applied to the edge portion to the extent that the edge tip portion is distorted with respect to the spherical body, so that a reliable sealed state is achieved. Therefore, a large number of gas vent grooves are provided in the end of the holding tube 4 in the axial direction, and the end of the holding tube is brought into contact with the sphere on the bottle side. Due to this gas vent groove, the bottle-side ends of the holding cylinders are separated from each other in the circumferential direction. That is, even if the initial shape of the bottle-side end of the holding tube is considerably narrowed with respect to the sphere, the sphere can pass with the end opening in the circumferential direction, and the sphere can be closed after the passage. At the end, regardless of the size of the sphere (however, within the tolerance range), a force that stably pushes the sphere toward the bottle mouth side can be obtained.

【００１２】[0012]

【発明の実施の形態】次に、本発明の実施例を添付図面
に基づき説明する。 ［図１に関する実施例の説明］図１の（ａ）は本発明の
一実施例を示す断面図である。また、（ｂ）は（ａ）と
同一のキャップにおいて、打栓されるびん口の口径が予
定の寸法よりも小さく（但し公差範囲内）、しかも嵌合
される球体の直径が予定よりも大きい（但し公差範囲
内）という悪条件下で利用した状態を示す断面図であ
る。以下これら図面を参照して本発明の一実施例を説明
する。本体Aは比較的硬質の単一の合成樹脂材料で一体
的に形成されている。外殻体を成す本体Aの先端側は飲
み口7周辺に突出部1Eを備えており、複数本の筒状の部
材が本体Aの内側に設けられている。これら構成を外周
から順に説明する。外筒1はびん口8の外周を包むように
形成されており、外周は利用者の口が直接当たるために
緩やかな丸みを持たせた形状をしている。内径側はびん
口8の凹凸と対応させた形状を持たせている。即ち、び
ん口8の先端部に設けられた膨らみ8Aに対応して外筒1の
内径側には輪状凹部1Aが設けられている。この輪状凹部
1Aのすぐ下方には輪状凸部1Bが設けられている。この輪
状凸部1Bが上記膨らみ8Aを乗り越えることによりびん口
8は本体Aに比較的強く係合する。また、この乗り越える
際の応力を逃がすために本体Aの外筒1の取付位置には輪
状凹部1Cが設けられている。また、この輪状凹部1Cは内
筒4の外側側の長手方向の長さを拡張する意味も存在
し、その結果として内筒4の変形をよりフレキシブルと
している。次にこの輪状凹部1Cのすぐ外側には軸方向に
立ち上がった輪状凸部1Dが設けられている。この輪状凸
部1Dはびん口8の端部に当たり密封性を高めるように働
く。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings. [Explanation of an embodiment relating to FIG. 1] FIG. 1A is a sectional view showing an embodiment of the present invention. Further, (b) is the same cap as (a), the diameter of the bottle cap to be stoppered is smaller than the planned size (however, within the tolerance range), and the diameter of the spherical body to be fitted is larger than the planned size. It is sectional drawing which shows the state utilized under the bad conditions (however, within the tolerance range). An embodiment of the present invention will be described below with reference to these drawings. The main body A is integrally formed of a relatively hard single synthetic resin material. The tip end side of the main body A forming the outer shell is provided with a protruding portion 1E around the drinking spout 7, and a plurality of tubular members are provided inside the main body A. These configurations will be described in order from the outer circumference. The outer cylinder 1 is formed so as to wrap the outer circumference of the bottle mouth 8, and the outer circumference has a shape with a gentle roundness so that the mouth of the user directly contacts. The inner diameter side has a shape corresponding to the unevenness of the bottle mouth 8. That is, a ring-shaped recess 1A is provided on the inner diameter side of the outer cylinder 1 so as to correspond to the bulge 8A provided at the tip of the bottle mouth 8. This annular recess
A ring-shaped convex portion 1B is provided immediately below 1A. When the ring-shaped convex portion 1B gets over the bulge 8A, the bottle mouth
8 engages body A relatively strongly. Further, a ring-shaped recess 1C is provided at the mounting position of the outer cylinder 1 of the main body A in order to release the stress at the time of overcoming. The ring-shaped recess 1C also has the meaning of extending the length of the inner cylinder 4 on the outer side in the longitudinal direction, and as a result, the deformation of the inner cylinder 4 is made more flexible. Next, a ring-shaped convex portion 1D rising in the axial direction is provided immediately outside this ring-shaped concave portion 1C. The ring-shaped convex portion 1D contacts the end of the bottle mouth 8 and works to enhance the sealing property.

【００１３】このように形成された外筒1の内周側には
内筒3が上記の輪状凹部1Dの内周位置からびん側へ向か
って延びる。その位置は外筒1の輪状凸部1Bに対してび
ん側へ越えた位置まで延びている。内筒3の外周はびん
口8の内周側と密封状態で接触する輪状突起3が３筋等間
隔で設けられている。また、この輪状突起3の厚みは十
分に持たせており、それによって比較的硬質の合成樹脂
素材から形成されているにも関わらず、びん口内径に追
従して密着する充分な弾性を備える。そしてびん内のガ
ス圧によってびん口内面に圧着されてびんとキャップと
の密封性は保持される。On the inner peripheral side of the outer cylinder 1 thus formed, an inner cylinder 3 extends from the inner peripheral position of the annular recess 1D toward the bottle side. The position extends to a position beyond the annular convex portion 1B of the outer cylinder 1 toward the bottle. The outer circumference of the inner cylinder 3 is provided with ring-shaped projections 3 which are in contact with the inner circumference side of the bottle mouth 8 in a sealed state at three equal intervals. Further, the ring-shaped projection 3 has a sufficient thickness, and has sufficient elasticity to follow the inner diameter of the bottle and to be in close contact therewith, although it is made of a relatively hard synthetic resin material. Then, the gas pressure in the bottle presses it against the inner surface of the bottle mouth to maintain the hermetic seal between the bottle and the cap.

【００１４】この内筒3の内周には抱持筒4が併設されて
おり、抱持筒4の一方側は飲み口7と連通しており、飲み
口7と抱持筒4との境には鋭い先端部を中心方向の内向き
に設けられたエッジ部6が設けられている。一方抱持筒4
のびん側端部は球体Bを抱き込むような球体保持部4Aを
備え、この凹面形状は全周に渡って平坦さを備えてい
る。また、抱持筒4のびん側端部において厚みを増加さ
せており、その結果として球体Bを押し込む際の強度を
増加させている。さて、このように形成した抱持筒4に
びん側から球体Bを押圧して嵌着すると、球体Bは球体保
持部4Aをで押し上げられて球体Bはびん口側へ押し上げ
られる。その結果として球体Bはエッジ部6に対して十分
に押しつけられる。エッジ部6はその鋭い先端部は球体B
と接触することで僅かに変形させて球体Bに密着し、こ
のようにして抱持筒4の飲み口側へ連通する開口は球体B
で完全に閉栓させる。A holding tube 4 is provided along the inner circumference of the inner tube 3, and one side of the holding tube 4 communicates with a drinking spout 7, and a boundary between the drinking spout 7 and the holding tube 4 is provided. Is provided with an edge portion 6 whose sharp tip portion is provided inwardly toward the center. Meanwhile holding tube 4
The end portion on the bottle side is provided with a spherical body holding portion 4A that holds the spherical body B, and the concave shape has flatness over the entire circumference. Further, the thickness is increased at the bottle-side end portion of the holding tube 4, and as a result, the strength at the time of pushing the spherical body B is increased. Now, when the sphere B is pressed and fitted from the bottle side into the holding cylinder 4 thus formed, the sphere B is pushed up by the sphere holding portion 4A and the sphere B is pushed up to the bottle mouth side. As a result, the sphere B is sufficiently pressed against the edge portion 6. Edge 6 has a sharp tip sphere B
When it comes into contact with the sphere B, it is slightly deformed and adheres to the sphere B. In this way, the opening communicating with the mouth side of the holding tube 4 is the sphere B.
To completely close it.

【００１５】また、球体保持部4Aは上述の通り平坦な面
を形成しているために、球体Bと密着する。即ち、図中
において球体の中腹部に対する側方位置においてこの密
着は始まり、球体保持部4Aの簡単まで幅を持って密着し
ている。この密着によりエッジ部6に引き続き閉栓作用
を備えるが、さらにもの密着状態で有利な点としてはび
ん口8への打栓時における球体が保持筒4から抜け落ちる
際の瞬間的な応力を受けとめるのに有利に働く。なお、
嵌着された球体Bの位置は中心が内筒3の外周に設けられ
た３つの輪状突起2の内、中央の輪状突起2に対応する高
さになっている。このように内筒3の長さを少なくとも
該球体Bの略中心を越える位置まで設けることで、その
内筒3のびん口に挿入され得る位置を球体の中心よりも
大きくすることができ、その結果として打栓時の閉栓過
程の軸方向の歪みを防止し、打栓時における球体Bの落
下の確率を低減している。Further, since the sphere holding portion 4A has a flat surface as described above, it is in close contact with the sphere B. That is, in the figure, this close contact starts at a lateral position with respect to the middle abdomen of the sphere, and the sphere holding portion 4A is in close contact with a certain width. By this close contact, the edge portion 6 continues to have a plugging action, but an advantage in the further close contact state is that it can receive the momentary stress when the sphere falls off from the holding cylinder 4 at the time of stoppering the bottle mouth 8. Work to your advantage. In addition,
The center of the fitted spherical body B is located at a height corresponding to the center ring-shaped projection 2 of the three ring-shaped projections 2 provided on the outer circumference of the inner cylinder 3. By providing the length of the inner cylinder 3 at least up to the position substantially beyond the center of the spherical body B, the position of the inner cylinder 3 that can be inserted into the bottle mouth can be made larger than the center of the spherical body. As a result, the axial distortion in the cap closing process at the time of stoppering is prevented, and the probability of the ball B falling at the time of stoppering is reduced.

【００１６】内筒3と抱持筒4との間には空所10が設けら
れている。この空所10は抱持筒4の根本から始まりびん
側で開口する形状を成し、その空所10は全周に渡ってつ
ながっている。また、閉栓状態においてこの空所10はラ
ムネの炭酸ガスによる圧力を受けて広がるように作用す
る。従って、空所10の一方側の壁に相当する内筒3はび
ん口8側へ押圧され内筒3に設けられた３筋の輪状突起2
が各々びん口8側へ押圧される。また、空所10の他方の
壁に相当する抱持筒4は球体Bを押圧し、その結果として
球体Bはエッジ部6へより強く押圧される。これら押圧力
は例えばラムネの設置してある雰囲気温度が異常に高く
なった場合に増加して、球体B周囲からの炭酸ガス漏れ
および内溶液の流出、あるいはびん口8の同状態を回避
する方向に作用する。A space 10 is provided between the inner cylinder 3 and the holding cylinder 4. The void 10 has a shape starting from the root of the holding tube 4 and opening on the bottle side, and the void 10 is connected over the entire circumference. Further, in the closed state, the void 10 acts to spread under the pressure of the carbon dioxide gas of Ramune. Therefore, the inner cylinder 3 corresponding to the wall on one side of the void 10 is pressed toward the bottle mouth 8 side, and the three linear ring-shaped projections 2 provided on the inner cylinder 3 are provided.
Are pressed toward the bottle mouth 8 side. Further, the holding tube 4 corresponding to the other wall of the space 10 presses the sphere B, and as a result, the sphere B is pressed more strongly to the edge portion 6. These pressing forces increase, for example, when the temperature of the atmosphere in which the ramune is installed becomes abnormally high, so that carbon dioxide gas leaks around the sphere B and the internal solution flows out, or the same state at the bottle mouth 8 is avoided. Act on.

【００１７】一方、この空所10はびん口8または球体Bの
予定を越える寸法相違を吸収する重要な役割を担ってい
る。即ち、例えばびん口8が予定より小さめ（但し公差
範囲内）で、しかも球体Bが予定よりも大きめ（但し公
差範囲内）であった場合その相対的にこのキャップは相
当硬く閉栓される。その様子を図１の（ｂ）に示した。
この図において、びん口8の太線が実際に打栓した形状
のもので、比較の為に予定の大きさのびん口8を細線で
示した。同様に、予定の直径を有する球体は細線で示し
た大きさであり、この（ｂ）で使用した球体は太線で示
した比較的大きめ直径を備えている。さて、この（ｂ）
のような同一状況下において、従来のラムネ瓶用のキャ
ップでは開栓が困難となる程度に硬い閉栓状態となる。
ところが、図１の（ｂ）で示したようにこの空所10で、
寸法相違による内筒3の変形や抱持筒4の変形は空所10の
持つ大きさ（この実施例においては1,6ミリ程度）以内
で吸収される。その結果として、閉栓状態が均一化され
て、安定した商品が供給され得る。On the other hand, the void 10 plays an important role of absorbing an unexpected size difference of the bottle mouth 8 or the sphere B. That is, for example, when the bottle mouth 8 is smaller than planned (but within the tolerance range) and the sphere B is larger than planned (but within the tolerance range), this cap is closed relatively hard. The state is shown in FIG.
In this figure, the thick line of the bottle mouth 8 has a shape that is actually stoppered, and the bottle mouth 8 of a predetermined size is shown by a thin line for comparison. Similarly, a sphere having a predetermined diameter has a size indicated by a thin line, and the sphere used in this (b) has a relatively large diameter indicated by a thick line. Now, this (b)
Under the same situation as described above, the conventional cap for Ramune bottles is in a hard closed state to the extent that opening is difficult.
However, as shown in (b) of FIG.
The deformation of the inner cylinder 3 and the deformation of the holding cylinder 4 due to the difference in size are absorbed within the size of the void 10 (about 1,6 mm in this embodiment). As a result, the closed state can be made uniform and a stable product can be supplied.

【００１８】［図２に関する実施例の説明］図２は本発
明の別の形態を示す断面図であり、（ａ）は中央縦断面
図であり、（ｂ）は（ａ）の抱持筒4の瓶側のＡ−Ａ断
面線における部分横断面図である。以下両図を参照して
本発明の別の実施例を説明する。図２の実施例は図１に
示した実施例に対して抱持筒4のびん側端部の形状だけ
を変形したものである。つまり、抱持筒4のびん側端部
は軸方向に沿って等間隔に八方に渡ってガス抜き溝5が
設けられている。従って、抱持筒4のびん側端部は周方
向に不連続となる。その結果として球体Bがこの端部か
ら押し込められた際に、一時この端部は開口しつつ球体
を保持する。また、周方向に連続してる状態に比較して
公差範囲を僅かに越えるような大きい直径の球体も無理
なく取り込むことが可能となり。また、公差範囲を僅か
に下回るような小さい直径の球体においても、その端部
の開閉のストロークが十分取り得るために密封条件を失
うことなしに装着が可能となる。[Explanation of an embodiment relating to FIG. 2] FIG. 2 is a sectional view showing another embodiment of the present invention, (a) is a central longitudinal sectional view, and (b) is a holding tube of (a). FIG. 4 is a partial cross-sectional view taken along the line AA on the bottle side of FIG. Another embodiment of the present invention will be described below with reference to the drawings. The embodiment shown in FIG. 2 is different from the embodiment shown in FIG. 1 only in the shape of the bottle-side end of the holding tube 4. That is, the bottle-side end of the holding tube 4 is provided with the gas vent grooves 5 in eight directions at equal intervals along the axial direction. Therefore, the bottle-side end of the holding tube 4 is discontinuous in the circumferential direction. As a result, when the sphere B is pushed in from this end, this end temporarily holds the sphere while opening. Also, it becomes possible to take in a sphere with a large diameter that slightly exceeds the tolerance range as compared with the state where it is continuous in the circumferential direction. Further, even a sphere having a small diameter slightly below the tolerance range can be mounted without losing the sealing condition because the opening and closing strokes of the ends thereof can be sufficiently taken.

【００１９】ところで、図２における本体Aと球体Bとの
密封は、主にエッジ部6で形成されていることは図１で
説明した通りである。また図２における実施例でも球体
の中腹位置に対応する側方部分、即ちガス抜き溝5の始
点よりも僅かに上側においても密着がなされている。こ
のように複数位置で密着を行うことは、特に本体Aの素
材をより高硬度の合成樹脂材料を用いた場合に有効であ
る。その理由は、硬度の高い素材と球体Bとの密着性
は、従来の生ゴムなどのパッキングほどは良くないこと
の起因する。そこで、この実施例においては閉栓時にお
けるびん口に挿入される際に生じるある程度の内向きに
かかる力（極端な内向きの力は応力吸収層Cで吸収され
ているが、その吸収されずに僅かに残った力）を利用し
て球体の中腹位置で、密着をさせることが、前述のエッ
ジ部6と球体Bの上方での密着の次に大切な要因となり得
る。By the way, as described with reference to FIG. 1, the main body A and the spherical body B in FIG. 2 are mainly sealed by the edge portion 6. Also in the embodiment shown in FIG. 2, the close contact is made even at the side portion corresponding to the midway position of the sphere, that is, slightly above the starting point of the gas vent groove 5. Such close contact at a plurality of positions is particularly effective when the material of the main body A is a synthetic resin material having higher hardness. The reason is that the adhesion between the high hardness material and the sphere B is not as good as the conventional packing of raw rubber or the like. Therefore, in this embodiment, a force applied inwardly to some extent when it is inserted into the bottle mouth at the time of closure (the extreme inward force is absorbed by the stress absorption layer C, but is not absorbed). Adhering at a middle position of the sphere by using the slightly remaining force) may be the next most important factor after the above-mentioned close contact between the edge portion 6 and the sphere B.

【００２０】以上本発明の一実施例の構造および使用方
法を述べたが、各構成要素は、必要に応じ下記に示した
他の実施態様が得られる。上記の図１において説明した
空所10は全周に渡ってつながっている形状を示したが、
必要によりこの空所10は不連続としても良い。即ち、内
筒3と抱持筒4とが図１においては、完全に離間している
が、部分的に比較的弱い状態で間欠的に接続されていて
も良い。この場合には空所内で受ける炭酸ガスによる圧
力を利用した作用は失うが、びんや球体の精度悪化によ
るばらつき吸収作用は達成し得る。The structure and method of use of one embodiment of the present invention have been described above. However, for each constituent element, other embodiments shown below can be obtained as required. Although the void 10 described in FIG. 1 above has a shape that is connected over the entire circumference,
If necessary, this void 10 may be discontinuous. That is, the inner cylinder 3 and the holding cylinder 4 are completely separated from each other in FIG. 1, but may be intermittently connected in a partially weak state. In this case, the action using the pressure of carbon dioxide gas received in the void is lost, but the variation absorbing action due to the deterioration of the accuracy of the bottle and the sphere can be achieved.

【００２１】図１で示したようなびん側に向かって開口
する形状は必ずしもとる必要はなく、この応力吸収層C
は必要に応じて図３で示した空間11のように閉じた状態
でも良い。即ち、内筒3と抱持筒4とはびん側端部で連続
しており、その内筒3と抱持筒4との中間位置において中
空となるように形成することによって、びん口の口径の
相違や球体の直径の相違（誤差）が互いに最大となった
場合であっても、このような形状上の上記誤差（ばらつ
き）は吸収され得る。The shape shown in FIG. 1 that opens toward the bottle does not necessarily have to be formed, and the stress absorption layer C
May be in a closed state like the space 11 shown in FIG. 3 if necessary. That is, the inner cylinder 3 and the holding cylinder 4 are continuous at the bottle-side end, and by forming the inner cylinder 3 and the holding cylinder 4 so as to be hollow at an intermediate position, the diameter of the bottle mouth Even in the case where the difference between (1) and the difference in the diameter of the sphere (error) is the maximum, the above error (variation) in the shape can be absorbed.

【００２２】さらに、図４に示したように、この応力吸
収層Cは、気泡を層状に設けたもの空間12とすることが
でき得る。この構造によって、上記図３のものと同様
に、上記のびん口の口径の相違や球体の直径の相違（誤
差）が互いに最大となった場合であっても、誤差（ばら
つき）は吸収され得る。Further, as shown in FIG. 4, the stress absorbing layer C can be a space 12 in which bubbles are provided in layers. With this structure, as in the case of FIG. 3, the error (variation) can be absorbed even when the difference in the diameter of the bottle mouth or the difference (error) in the diameter of the sphere becomes maximum. .

【００２３】[0023]

【発明の効果】以上説明してきたように請求項１に記載
した発明によれば、次のような効果をそうする。即ち、
合成樹脂材料で一体的に形成されているので、従来打栓
機によってびん口部へキャップを打栓した際に生じてい
たパッキン部材のずれが構造上回避され、歩留まりが向
上する。また、びん口部は外筒と内筒によって挟み込む
ようにして保持されているから、従来に増して確実な閉
栓がなされる。更に、応力吸収層を介して抱持筒4を設
けており、この抱持筒4で球体を保持している。このよ
うに球体保持とびん口部との閉栓とを隔離して設けてい
るために、各々の精度上のばらつきが直列的に影響しあ
うことが回避され、応力吸収層の吸収範囲内であれば、
びんの形状ばらつきや球体のばらつき（何れも公差範囲
内）に関係なしに安定したキャップが供給され得る。そ
の結果としてびん詰め作業の歩留まりが向上し、総合的
に低コストのラムネ瓶を提供し得る。As described above, according to the invention described in claim 1, the following effects are obtained. That is,
Since it is integrally formed of the synthetic resin material, the displacement of the packing member, which has been conventionally caused when the cap is stoppered by the stoppering machine, is structurally avoided, and the yield is improved. Further, since the bottle mouth portion is held so as to be sandwiched by the outer cylinder and the inner cylinder, the cap can be closed more reliably than ever before. Further, a holding cylinder 4 is provided via a stress absorbing layer, and the holding cylinder 4 holds a sphere. Since the sphere holding and the cap of the bottle mouth are separated from each other in this manner, it is possible to avoid that the variations in accuracy affect each other in series, so that the variation in accuracy is within the absorption range of the stress absorption layer. If
A stable cap can be supplied irrespective of bottle shape variations and sphere variations (both within tolerance range). As a result, the yield of the bottling operation is improved, and it is possible to provide a Ramune bottle of low cost as a whole.

【００２４】また、請求項２の発明によれば、請求項１
の作用に加えて、空所はびん側に向かって開口してお
り、ラムネ特有の高圧ガスによってこの空所10は圧力を
受けることができる。そして、ラムネ内の圧力が高くな
ると、内筒はびん口部へ向かって力が加わる。一方、抱
持筒は球体Bに向かって力が加わる。これら双方の筒へ
向かう力は、例えばラムネの設置してある雰囲気温度が
異常に高くなった場合に増加して、球体周囲からの炭酸
ガス漏れおよび内溶液の流出、あるいは本体全体がびん
口から抜ける状態を自ら回避するといった格別の効果が
得られる。According to the invention of claim 2, according to claim 1,
In addition to the above action, the cavity is opened toward the bottle side, and the cavity 10 can be pressurized by the high-pressure gas peculiar to Ramune. Then, when the pressure inside the ramunes increases, a force is applied to the inner cylinder toward the bottle mouth portion. On the other hand, a force is applied to the holding tube toward the sphere B. The force acting on both of these cylinders increases, for example, when the ambient temperature in which the ramune is installed rises abnormally, causing carbon dioxide gas leakage around the sphere and outflow of the internal solution, or the entire body from the bottle mouth. A special effect is obtained such as avoiding the state of exiting.

【００２５】また、請求項３の発明によれば、請求項１
の作用に加えて、内筒の長さを少なくとも該球体の略中
心を越える位置まで設けている。即ち、その内筒のスト
ロークを球体の中心位置よりもびん側へ延長させたこと
で、打栓時の閉栓過程の軸方向の歪みを防止し、その結
果として打栓時における球体Bの落下の確率を低減し、
ている。Further, according to the invention of claim 3, according to claim 1
In addition to the above function, the length of the inner cylinder is provided at least to a position beyond the substantial center of the sphere. That is, by extending the stroke of the inner cylinder to the bottle side from the center position of the sphere, it is possible to prevent axial distortion in the stoppering process at the time of stoppering, and as a result, to prevent the ball B from falling during stoppering. Reduce the probability,
ing.

【００２６】また、請求項４の発明によれば、請求項１
の効果に加えて、抱持筒と球体とが、飲み口側で接触す
ると共にびん側でも接触し、これら接触の何れか一方の
接触によって抱持筒と球体とが密封状態となるように形
成している。従って、球体は軸方向の上下で保持される
構造となっており、打栓時の落下の可能性を低減させて
いる。According to the invention of claim 4, claim 1
In addition to the effect of, the holding tube and the sphere are in contact with each other on the mouth side and the bottle side, and the holding tube and the sphere are sealed by either one of these contacts. are doing. Therefore, the sphere is structured to be held up and down in the axial direction, which reduces the possibility of dropping at the time of tapping.

【００２７】また、請求項５の発明によれば、請求項４
の効果に加えて、抱持筒の端部に軸方向に設けた多数の
ガス抜き溝によって球体が予定よりも大きくとも、問題
なく保持筒へ嵌着され得る。さらにこの端部の初期の形
状をかなり狭くしても、この端部が周方向に互いに離間
しつつ開くので種々の大きさの球体は通過が可能であ
り、そして通過後において閉じたこの端部は、球体の形
状がかなり小さく（公差範囲で）とも安定して球体Bを
びん口部側へ押しつける力が得られる。その結果とし
て、飲み口部側に設けられたエッジ部に球体は安定して
押圧され、安定して密封状態で閉栓がなされ得る。According to the invention of claim 5, claim 4
In addition to the above effect, even if the sphere is larger than expected due to the large number of gas venting grooves provided in the end portion of the holding cylinder in the axial direction, the sphere can be fitted into the holding cylinder without any problem. Furthermore, even if the initial shape of this end is considerably narrowed, since the ends open apart from each other in the circumferential direction, spheres of various sizes are allowed to pass through, and after this end, the closed end is closed. Can stably push the sphere B toward the bottle mouth side even if the sphere has a fairly small shape (within the tolerance range). As a result, the sphere can be stably pressed against the edge portion provided on the side of the drinking spout, and can be stably closed in the sealed state.

【図面の簡単な説明】[Brief description of drawings]

【図１】 （ａ）は本発明の一実施例を示す中央縦断面
図。（ｂ）は（ａ）の同一構造のキャップに異なる大き
さのびん口と異なる直径の球体を嵌合した様子を示して
いる。FIG. 1A is a central longitudinal sectional view showing an embodiment of the present invention. (B) shows a state in which bottle caps of different sizes and spheres of different diameters are fitted to the cap of the same structure of (a).

【図２】 本発明の別の形態を示す断面図であり、
（ａ）は中央縦断面図であり、（ｂ）は（ａ）の抱持筒
4の瓶側のＡ−Ａ断面線における部分横断面図である。FIG. 2 is a sectional view showing another embodiment of the present invention,
(A) is a central longitudinal cross-sectional view, (b) is a holding tube of (a)
FIG. 4 is a partial cross-sectional view taken along the line AA on the bottle side of FIG.

【図３】 本発明の別の実施例を示す中央縦断面図であ
る。FIG. 3 is a central longitudinal sectional view showing another embodiment of the present invention.

【図４】 本発明の別の実施例を示す中央縦断面図であ
る。FIG. 4 is a central longitudinal sectional view showing another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

図１中 A…本体 B…球体 C…応力吸収層 1…外筒 2…輪状突起 3…内筒 4…抱持筒 5…ガス抜き溝 6…エッジ部 7…飲み口 8…びん口 10…空所 11…空所 12…空所 In FIG. 1, A ... Main body B ... Sphere C ... Stress absorption layer 1 ... Outer cylinder 2 ... Ring protrusion 3 ... Inner cylinder 4 ... Holding cylinder 5 ... Venting groove 6 ... Edge portion 7 ... Drinking mouth 8 ... Bottle mouth 10 ... Vacancy 11 ... Vacancy 12 ... Vacancy

【手続補正書】[Procedure amendment]

【提出日】平成７年１０月１３日[Submission date] October 13, 1995

【手続補正１】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】００１４[Correction target item name] 0014

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【００１４】この内筒3の内周には抱持筒4が併設されて
おり、抱持筒4の一方側は飲み口7と連通しており、飲み
口7と抱持筒4との境には鋭い先端部を中心方向の内向き
に設けられたエッジ部6が設けられている。一方抱持筒4
のびん側端部は球体Bを抱き込むような球体保持部4Aを
備え、この凹面形状は全周に渡って平坦さを備えてい
る。また、抱持筒4のびん側端部において厚みを増加さ
せており、その結果として球体Bを押し込む際の強度を
増加させている。さて、このように形成した抱持筒4に
びん側から球体Bを押圧して嵌着すると、球体Bは球体保
持部4Aで押し上げられて球体Bはびん口側へ押し上げら
れる。その結果として球体Bはエッジ部6に対して十分に
押しつけられる。エッジ部6はその鋭い先端部は球体Bと
接触することで僅かに変形させて球体Bに密着し、この
ようにして抱持筒4の飲み口側へ連通する開口は球体Bで
完全に閉栓させる。A holding tube 4 is provided along the inner circumference of the inner tube 3, and one side of the holding tube 4 communicates with a drinking spout 7, and a boundary between the drinking spout 7 and the holding tube 4 is provided. Is provided with an edge portion 6 whose sharp tip portion is provided inwardly toward the center. Meanwhile holding tube 4
The end portion on the bottle side is provided with a spherical body holding portion 4A that holds the spherical body B, and the concave shape has flatness over the entire circumference. Further, the thickness is increased at the bottle-side end portion of the holding tube 4, and as a result, the strength at the time of pushing the spherical body B is increased. Now, when the sphere B is pressed and fitted from the bottle side to the holding cylinder 4 thus formed, the sphere B is pushed up by the sphere holding portion 4A and the sphere B is pushed up to the bottle mouth side. As a result, the sphere B is sufficiently pressed against the edge portion 6. The edge portion 6 has its sharp tip portion slightly deformed by coming into contact with the sphere B and is brought into close contact with the sphere B. In this way, the opening communicating with the drinking mouth side of the holding tube 4 is completely closed by the sphere B. Let

【手続補正２】[Procedure amendment 2]

【補正対象書類名】図面[Document name to be amended] Drawing

【補正対象項目名】全図[Correction target item name] All figures

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【図１】 FIG.

【図２】 [Fig. 2]

【図３】 [Figure 3]

【図４】 FIG. 4

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】単一の合成樹脂材料によって一体的に形成
された本体(A)と、該本体(A)に抱持される球体(B)とか
ら成り、該本体(A)が、閉栓時に内面がびん口(8)と接触
する外筒(1)と、閉栓時にびん口部(8)の内面と密接する
輪状突起(2)を備える内筒(3)と、該内筒(3)の内側に設
けられ内面が該球体(B)と接触する抱持筒(4)とを備え、
内筒(3)と抱持筒(4)との間に閉栓時に該内筒(3)の変形
を抱持筒(4)へ伝わり難くする応力吸収層(C)を設けたこ
とを特徴とするラムネ瓶用キャップ。1. A main body (A) integrally formed of a single synthetic resin material, and a sphere (B) held by the main body (A), the main body (A) being a stopper. An outer cylinder (1) whose inner surface sometimes contacts the bottle mouth (8), an inner cylinder (3) having a ring-shaped projection (2) which comes into close contact with the inner surface of the bottle mouth (8) when the cap is closed, and the inner cylinder (3) ) Is provided inside and a holding tube (4) having an inner surface in contact with the spherical body (B),
A stress absorbing layer (C) is provided between the inner cylinder (3) and the holding cylinder (4) to prevent the deformation of the inner cylinder (3) from being transmitted to the holding cylinder (4) when the plug is closed. Cap for Ramune bottle. 【請求項２】該応力吸収層(C)が該内筒(3)と抱持筒(4)
とを飲み口(7)側で接続し該内筒(3)と抱持筒(4)とをび
ん側では離間させて形成した空所(10)からなることを特
徴とする請求項１に記載のラムネ瓶用キャップ。2. The stress absorbing layer (C) comprises the inner cylinder (3) and a holding cylinder (4).
And an inner cylinder (3) and a holding cylinder (4) which are connected to each other on the side of the mouth (7) and are separated from each other on the side of the bottle (10). The described Ramune bottle cap. 【請求項３】該内筒(3)の長さが少なくとも該球体(B)の
略中心を越える位置まで延びていることを特徴とする請
求項１に記載のラムネ瓶用キャップ。3. The cap for a Ramune bottle according to claim 1, wherein the length of the inner cylinder (3) extends at least to a position beyond the center of the spherical body (B). 【請求項４】該抱持筒(4)と該球体(B)とが、飲み口(7)
側で接触すると共にびん側でも接触し、これら接触の何
れか一方によって該抱持筒(4)と該球体(B)とを密封状態
となるようにしたことを特徴とする請求項１に記載のラ
ムネ瓶用キャップ。4. The holding tube (4) and the spherical body (B) are a drinking mouth (7).
The contact is made not only on the side but also on the bottle side, and the holding tube (4) and the sphere (B) are brought into a sealed state by one of these contacts. Ramune bottle cap. 【請求項５】該抱持筒(4)が飲み口(7)側に略内方に向か
って設け該球体(B)と密封状態で接触する鋭い先端形状
のエッジ部(6)を備え、また、抱持筒(4)の端部に軸方向
に多数のガス抜き溝(5)を備え、この抱持筒(4)の端部が
びん側の球体と接触するようにしたことを特徴とする請
求項４に記載のラムネ瓶用キャップ。5. The holding tube (4) is provided on the side of the spout (7) substantially inward, and is provided with a sharp tip-shaped edge portion (6) that comes into contact with the sphere (B) in a sealed state, In addition, a large number of gas vent grooves (5) are provided in the end of the holding tube (4) in the axial direction so that the end of the holding tube (4) comes into contact with the sphere on the bottle side. The cap for Ramune bottle according to claim 4.