JP2016037290A - cap - Google Patents

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JP2016037290A
JP2016037290A JP2014159552A JP2014159552A JP2016037290A JP 2016037290 A JP2016037290 A JP 2016037290A JP 2014159552 A JP2014159552 A JP 2014159552A JP 2014159552 A JP2014159552 A JP 2014159552A JP 2016037290 A JP2016037290 A JP 2016037290A
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Japan
Prior art keywords
container
annular
valve
valve seat
cap
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Granted
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JP2014159552A
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JP5963323B2 (en
Inventor
孝陽 崎村
Takaaki Sakimura
孝陽 崎村
佐々木　昌
Akira Sasaki
昌 佐々木
水落　正志
Masashi Mizuochi
正志 水落
佐々木　元
Hajime Sasaki
元 佐々木
悟 市川
Satoru Ichikawa
悟 市川
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Tokyo Light Industry Co Ltd
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Tokyo Light Industry Co Ltd
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Priority to JP2014159552A priority Critical patent/JP5963323B2/en
Application filed by Tokyo Light Industry Co Ltd filed Critical Tokyo Light Industry Co Ltd
Priority to PCT/JP2014/077229 priority patent/WO2015173979A1/en
Priority to CN201480078835.7A priority patent/CN106573709B/en
Priority to EP14891667.9A priority patent/EP3144243B1/en
Priority to KR1020187033193A priority patent/KR102110129B1/en
Priority to KR1020167032225A priority patent/KR102183292B1/en
Priority to US14/408,832 priority patent/US9637282B2/en
Publication of JP2016037290A publication Critical patent/JP2016037290A/en
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Publication of JP5963323B2 publication Critical patent/JP5963323B2/en
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Abstract

PROBLEM TO BE SOLVED: To provide a cap capable of keeping an inside of a container in a sealed state while returning an undischarged content into the container without manual operation of a user after the use of the content.SOLUTION: A cap body 4 comprises: an annular wall part 10 having a discharge hole 25 positioned at the radial center part, and an annular valve seat 26 provided around the discharge hole 25; and a non-return valve 12, which is disposed above the annular wall part 10, for opening and closing the discharge hole 25 while a valve part 36 separates from or is seated on the annular valve seat 26. The annular valve seat 26 and the valve part 36 come into contact with each other at inverted conical surfaces 28, 29 and a communication groove 27 toward a radial direction is formed between the annular valve seat 26 and the valve part 36. This allows an undischarged content to return into a container 2 without manual operation of a user after the use of the content, thereby keeping the inside of the container 2 in a sealed state.SELECTED DRAWING: Figure 1

Description

本発明は、合成樹脂から成形されたキャップ、特に、醤油等の液状内容物または粘性を有する流動性内容物が充填される容器の容器口部に装着され、容器内の圧力により開閉するキャップに関するものである。   The present invention relates to a cap molded from a synthetic resin, and more particularly to a cap that is attached to a container mouth portion of a container filled with a liquid content such as soy sauce or a fluid content having viscosity, and that opens and closes by the pressure in the container. Is.

上述した内容物の使用後、キャップの締着が弱いと、容器内の密封状態を維持できず容器内に空気または菌類等が入り、内容物の酸化またはカビ等の繁殖をきたし劣化を早めるなどの問題があった。これを解決するために、容器口部に装着されるキャップには、容器の胴部を圧搾して容器に内圧を加え、適量の内容物を使用した直後、使用者が手でキャップを操作することなく容器内（容器の口部）を密封するものが提案されている。   If the cap is weak after using the above-mentioned contents, the sealed state inside the container cannot be maintained, and air or fungi will enter the container, causing the contents to oxidize or proliferate, etc. There was a problem. In order to solve this problem, the cap attached to the container mouth is squeezed into the body of the container to apply internal pressure to the container, and the user operates the cap by hand immediately after using an appropriate amount of contents. There has been proposed one that seals the inside of the container (the mouth of the container) without any problems.

例えば、特許文献１には、容器口部に嵌合されるキャップ本体は、前記容器口部に連通する吐出通路と、該吐出通路内に嵌合して、吐出孔を有するベース部と、該ベース部上に配置され、前記吐出孔からの内容物の吐出だけを許容する逆止弁と、を備え、該逆止弁は、前記吐出通路内に嵌合される円筒部と、該円筒部の内壁面から間隙を形成するように中心に向かって放射状に延びる弾性変形可能な複数の弾性片と、該各弾性片の先端に一体に接続され、前記吐出孔の吐出方向下流側にあって、該吐出孔を開閉する弁部材とから構成され、容器への内圧が解除されると、逆止弁の各弾性片が復元するために、弁部材が吐出孔を塞ぎ容器内を密封状態に維持することが開示されている。   For example, in Patent Document 1, a cap main body fitted to a container mouth portion includes a discharge passage communicating with the container mouth portion, a base portion fitted into the discharge passage and having a discharge hole, A check valve disposed on the base portion and allowing only discharge of the contents from the discharge hole, the check valve being fitted into the discharge passage, and the cylindrical portion A plurality of elastically deformable elastic pieces extending radially toward the center so as to form a gap from the inner wall surface thereof, and integrally connected to the tips of the respective elastic pieces, and downstream of the discharge holes in the discharge direction. And the valve member that opens and closes the discharge hole, and when the internal pressure to the container is released, each elastic piece of the check valve is restored, so that the valve member closes the discharge hole and seals the inside of the container It is disclosed to maintain.

特開２０１３−２４１１９７号公報JP 2013-241197 A

しかしながら、特許文献１の発明では、内容物を吐出した後、逆止弁が作動することで、吐出通路から吐出されなかった内容物が容器内に戻らずに吐出通路内に残存することになり、蓋体を閉めるときに、蓋体の円筒状閉塞部により内容物が飛散する虞があり、しかも、蓋体を閉めて再び開けると、蓋体の円筒状閉塞部に内容物が付着する虞もあり、改善する必要があった。   However, in the invention of Patent Document 1, after the contents are discharged, the check valve is operated so that the contents not discharged from the discharge passage remain in the discharge passage without returning to the container. When the lid is closed, the contents may be scattered by the cylindrical closed portion of the lid, and when the lid is closed and reopened, the contents may adhere to the cylindrical closed portion of the lid There was also a need to improve.

本発明は、かかる点に鑑みてなされたものであり、内容物の使用後、使用者が手で操作することなく、吐出されなかった内容物を容器内に戻しつつ、容器内を密封状態に維持することが可能なキャップを提供することを目的とする。   The present invention has been made in view of the above points, and after the contents are used, the contents inside the container are kept in a sealed state while the contents that have not been discharged are returned to the container without manual operation by the user. An object is to provide a cap that can be maintained.

本発明は、上記課題を解決するための手段として、請求項１に記載した発明は、容器口部に嵌合されるキャップ本体を備えた、合成樹脂製のキャップであって、該キャップ本体は、径方向中央部に位置する吐出孔と、該吐出孔周辺に設けられる環状弁座とを有する環状壁部と、該環状壁部の上方に配置され、弁部が前記環状弁座から離脱または着座して前記吐出孔を開閉する逆止弁と、を備え、前記環状弁座と前記弁部とは互いの円錐状面で当接して、前記環状弁座と前記弁部との間に径方向に向かう流通溝が形成されることを特徴とするものである。
請求項２に記載した発明は、請求項１に記載した発明において、前記逆止弁を成形する合成樹脂は、前記環状壁部を成形する合成樹脂よりも高弾性であることを特徴とするものである。
請求項１及び２の発明では、内容物の使用時には、容器の胴部を圧搾して容器に内圧を加えれば、容器の内圧により逆止弁が弾性変形して、弁部が環状壁部の環状弁座から離脱すると共に、内容物が吐出孔から外部に吐出される。一方、容器への内圧が解除されると、逆止弁が復元して弁部が環状壁部の環状弁座に互いの円錐状面を介して着座するために、吐出孔が閉塞されて、迅速に容器内を密封状態に維持でき、空気の容器内への流入を抑制することができる。この時、容器への内圧が解除された初期段階では、逆止弁の弁部から環状弁座への押圧力が低いために流通溝が開放された状態で、外部に吐出されなかった内容物は、この流通溝から容器内に戻るようになる。その後次第に、弁部から環状弁座への押圧力が高くなり流通溝の開口面積が減少すると共に、表面張力により内容物が流通溝の極小の開口を閉塞するようになるために、容器内を密封状態に維持することができる。また、流通溝は、互いの円錐状面で当接される環状弁座と弁部との間に形成されているので、容器への内圧が解除された初期段階では内容物が流通溝を通過し易くなり、その後最終的には容器を逆さにしても、容器自身を振ったりしなければ、容器内の内容物が流通溝を通過して外部に吐出されることはほとんどない。 The present invention provides, as means for solving the above-mentioned problems, the invention described in claim 1 is a cap made of a synthetic resin provided with a cap body fitted to a container mouth portion, and the cap body is An annular wall portion having a discharge hole located in a central portion in the radial direction and an annular valve seat provided around the discharge hole, and disposed above the annular wall portion, the valve portion being detached from the annular valve seat or A check valve that sits and opens and closes the discharge hole, and the annular valve seat and the valve portion are in contact with each other on a conical surface and have a diameter between the annular valve seat and the valve portion. A flow groove directed in the direction is formed.
The invention described in claim 2 is characterized in that, in the invention described in claim 1, the synthetic resin for molding the check valve is higher in elasticity than the synthetic resin for molding the annular wall portion. It is.
In the first and second aspects of the present invention, when the contents are used, if the body portion of the container is squeezed and the internal pressure is applied to the container, the check valve is elastically deformed by the internal pressure of the container, and the valve portion is the annular wall portion. While being detached from the annular valve seat, the contents are discharged to the outside through the discharge hole. On the other hand, when the internal pressure to the container is released, the check valve is restored and the valve portion is seated on the annular valve seat of the annular wall portion via the conical surface, the discharge hole is closed, The inside of the container can be quickly maintained in a sealed state, and the inflow of air into the container can be suppressed. At this time, at the initial stage when the internal pressure to the container was released, the pressure that was pressed from the valve portion of the check valve to the annular valve seat was low, so the contents that were not discharged to the outside with the flow groove opened Returns from the flow channel into the container. Then, gradually, the pressing force from the valve portion to the annular valve seat is increased, the opening area of the flow groove is reduced, and the content closes the minimum opening of the flow groove due to the surface tension. It can be kept sealed. In addition, since the flow groove is formed between the annular valve seat and the valve portion that are in contact with each other in the conical surface, the contents pass through the flow groove at the initial stage when the internal pressure to the container is released. If the container itself is not shaken even if the container is finally turned upside down, the contents in the container hardly pass through the flow channel and are discharged outside.

請求項３に記載した発明は、請求項１または２に記載した発明において、前記キャップ本体には、該キャップ本体に被冠される蓋体がヒンジを介して接続されて、前記流通溝は、前記ヒンジとは反対側に１箇所形成されることを特徴とするものである。
請求項３の発明では、外部に吐出されなかった内容物が流通溝から容器内に戻り易くなる。 The invention described in claim 3 is the invention described in claim 1 or 2, wherein the cap body is connected to a cap body crowned by the cap body via a hinge, and the flow groove is One place is formed on the opposite side of the hinge.
In the invention of claim 3, the contents that have not been discharged to the outside easily return from the flow channel into the container.

請求項４に記載した発明は、請求項１〜３のいずれかに記載した発明において、前記環状弁座に前記流通溝が形成され、該流通溝は、その深さ寸法が、０．０２ｍｍ〜０．０６ｍｍの範囲で形成されることを特徴とするものである。
請求項４の発明では、上述した流通溝としての所望の作用効果を確実にすることができる。 The invention described in claim 4 is the invention described in any one of claims 1 to 3, wherein the flow groove is formed in the annular valve seat, and the flow groove has a depth dimension of 0.02 mm to It is formed in the range of 0.06 mm.
In invention of Claim 4, the desired effect as a circulation groove | channel mentioned above can be ensured.

本発明によれば、内容物の使用後、使用者が手で操作することなく、吐出されなかった内容物を容器内に戻しつつ、容器内を密封状態に維持することが可能なキャップを提供することができる。   According to the present invention, there is provided a cap capable of maintaining the inside of a container in a sealed state while returning the contents that have not been discharged into the container without the user manually operating the contents after use. can do.

図１は、本発明の実施の形態に係るキャップを示す断面図である。FIG. 1 is a cross-sectional view showing a cap according to an embodiment of the present invention. 図２の（ａ）は、図１の本キャップの構成で、蓋体、及び環状壁部を含む主キャップ体の平面図であり、（ｂ）は、（ａ）の断面図である。2A is a plan view of the main cap body including the lid body and the annular wall portion in the configuration of the cap of FIG. 1, and FIG. 2B is a cross-sectional view of FIG. 図３（ａ）は、図２（ｂ）のＡ部拡大図であり、（ｂ）は、（ａ）のＢ−Ｂ線に沿う断面図である。Fig.3 (a) is the A section enlarged view of FIG.2 (b), (b) is sectional drawing which follows the BB line of (a). 図４の（ａ）は、図１の本キャップの構成である逆止弁の平面図であり、（ｂ）は、（ａ）の断面図であり、（ｃ）は下面図である。4A is a plan view of a check valve that is the configuration of the main cap of FIG. 1, FIG. 4B is a cross-sectional view of FIG. 4A, and FIG. 図５（ａ）は、図１の本キャップの構成である案内筒状体の平面図であり、（ｂ）は、（ａ）の断面図である。Fig.5 (a) is a top view of the guide cylindrical body which is a structure of this cap of FIG. 1, (b) is sectional drawing of (a). 図６は、本キャップの作用を段階的に示した図である。FIG. 6 is a view showing the action of the cap in stages.

以下、本発明を実施するための形態を図１〜図６に基づいて詳細に説明する。
本発明の実施の形態に係るキャップ１は、図１に示すように、容器２の容器口部３に嵌合され、内容物の吐出孔２５を有するキャップ本体４と、該キャップ本体４を構成する主キャップ体１１にヒンジ６を介して連結される蓋体５とから構成される。本キャップ１は、図２に示す、蓋体５が連結され環状壁部１０を含む主キャップ体１１と、図４に示す逆止弁１２と、図５に示す案内筒状体１３との三つの構成部材を組み立てて構成される。
なお、蓋体５をヒンジ６によりキャップ本体４に連結させずに、別体として構成してもよい。さらに、後述する逆止弁１２により容器２内の密封状態が維持されているので、蓋体５を構成部材として必ずしも備える必要はない。 Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1, a cap 1 according to an embodiment of the present invention is fitted into a container mouth 3 of a container 2 and includes a cap body 4 having a discharge hole 25 for contents, and the cap body 4 is configured. And a lid 5 connected to the main cap body 11 via a hinge 6. The cap 1 includes a main cap body 11 including a ring body 10 connected to a lid body 5 shown in FIG. 2, a check valve 12 shown in FIG. 4, and a guide cylindrical body 13 shown in FIG. It is constructed by assembling two components.
The lid 5 may be configured as a separate body without being connected to the cap body 4 by the hinge 6. Furthermore, since the sealed state in the container 2 is maintained by the check valve 12 to be described later, it is not always necessary to provide the lid 5 as a constituent member.

図１に示すように、容器２は、例えばチューブ容器など変形し易い容器であり、その内部には液状内容物や粘性を有する流動性内容物が充填される。この内容物は、例えば、醤油、オリーブオイル、ドレッシング、マヨネーズ、ケチャップ、とんかつ用ソース、ペースト状マスタード等が挙げられる。容器２は、その胴部２ａを圧搾するなどして内圧を加えることで内容物を吐出させるタイプのものである。容器口部３は、円筒状に形成される。該容器口部３の下部外壁面には雄ねじ部１５が形成される。容器口部３の上部には、周壁部全体が内方に突出する嵌合壁部１６が形成される。なお、本キャップ１は、外容器と内容器とからなる二重容器（剥離容器と言われるものも含む）にも採用することができ、外容器２の容器口部３に装着される。内容器は、その内部に内容物が充填されると共に内容物の減少に伴いしぼみ変形する可撓性を有するものである。内容器の減容形状を保持するために外容器と内容器との間には外気が吸入されるように構成される。   As shown in FIG. 1, the container 2 is a container that is easily deformed, such as a tube container, and is filled with a liquid content or a fluid content having viscosity. Examples of the contents include soy sauce, olive oil, dressing, mayonnaise, ketchup, tonkatsu sauce, pasty mustard and the like. The container 2 is of a type in which contents are discharged by applying an internal pressure by, for example, squeezing the body 2a. The container mouth 3 is formed in a cylindrical shape. A male screw portion 15 is formed on the lower outer wall surface of the container mouth portion 3. A fitting wall portion 16 is formed on the upper portion of the container mouth portion 3 so that the entire peripheral wall portion protrudes inward. The cap 1 can also be used for a double container (including a so-called peeling container) composed of an outer container and an inner container, and is attached to the container mouth 3 of the outer container 2. The inner container is flexible so that it is filled with the contents and deforms as the contents decrease. In order to maintain the volume-reducing shape of the inner container, it is configured so that outside air is sucked between the outer container and the inner container.

図１に示すように、キャップ本体４は、容器口部３に螺合される円筒状の主キャップ体１１と、主キャップ体１１の円筒状内側壁部１９の内壁面から一体的に径方向中心に向かって斜め上方に延び、径方向中央部に吐出孔２５を有する環状壁部１０と、該環状壁部１０の上方に配置され、弁部３６が吐出孔２５周辺の環状弁座２６から離脱または着座して吐出孔２５を開閉する逆止弁１２と、該逆止弁１２の上方に配置され、吐出孔２５からの内容物の吐出通路４１を有する案内筒状体１３とから構成される。逆止弁１２を成形する合成樹脂は、主キャップ体１１を成形する合成樹脂よりも高弾性となる。具体的には、主キャップ体１１（蓋体４を含む）及び案内筒状体１３はポリプロピレンにて成形される。また、逆止弁１２はポリエチレンエラストマーにて成形される。   As shown in FIG. 1, the cap body 4 is integrally formed in a radial direction from a cylindrical main cap body 11 screwed into the container mouth 3 and an inner wall surface of the cylindrical inner wall portion 19 of the main cap body 11. An annular wall portion 10 that extends obliquely upward toward the center and has a discharge hole 25 in the central portion in the radial direction, is disposed above the annular wall portion 10, and the valve portion 36 extends from the annular valve seat 26 around the discharge hole 25. A check valve 12 that opens or closes the discharge hole 25 by being separated or seated, and a guide cylindrical body 13 that is disposed above the check valve 12 and has a discharge passage 41 for contents from the discharge hole 25. The The synthetic resin for molding the check valve 12 is more elastic than the synthetic resin for molding the main cap body 11. Specifically, the main cap body 11 (including the lid body 4) and the guide cylindrical body 13 are formed of polypropylene. The check valve 12 is formed of polyethylene elastomer.

図１及び図２に示すように、主キャップ体１１は、容器口部３に螺合される円筒状外側壁部１８と、該円筒状外側壁部１８の内側に同心状に配置される円筒状内側壁部１９と、円筒状外側壁部１８の上端と円筒状内側壁部１９の上端とを接続する環状水平壁部２０とから構成される。円筒状外側壁部１８の内壁面には、軸方向全域に、容器口部３に設けた雄ねじ部１５に螺合する雌ねじ部２１が形成される。円筒状内側壁部１９と円筒状外側壁部１８との間に環状空間２２が形成される。円筒状内側壁部１９の上部内壁面には、周方向に沿って環状に延びる環状嵌合凹部２３が形成される。   As shown in FIGS. 1 and 2, the main cap body 11 includes a cylindrical outer wall portion 18 that is screwed into the container mouth portion 3, and a cylinder that is concentrically disposed inside the cylindrical outer wall portion 18. The cylindrical inner wall portion 19 and an annular horizontal wall portion 20 that connects the upper end of the cylindrical outer wall portion 18 and the upper end of the cylindrical inner wall portion 19 are configured. On the inner wall surface of the cylindrical outer wall portion 18, a female screw portion 21 that is screwed into the male screw portion 15 provided in the container mouth portion 3 is formed in the entire axial direction. An annular space 22 is formed between the cylindrical inner wall portion 19 and the cylindrical outer wall portion 18. The upper inner wall surface of the cylindrical inner wall portion 19 is formed with an annular fitting recess 23 extending annularly along the circumferential direction.

円筒状内側壁部１９の下部内壁面には、その周方向全域から一体的に環状壁部１０が径方向中心に向かって斜め上方に延びている。環状壁部１０の下壁面は截頭円錐状を呈している。環状壁部１０と円筒状内側壁部１９の内壁面とにより上方を開放した空間２４が形成される。環状壁部１０の径方向中心部には略円形状の吐出孔２５が開口される。該吐出口２５は容器口部３内と連通される。該吐出孔２５はφ５．０ｍｍ〜φ１２．０ｍｍの範囲で形成される。該吐出孔２５の周辺に環状弁座２６が構成される。該環状弁座２６は倒立円錐状面２８（上方に拡径した環状テーパ面やすり鉢状面）に形成される。   On the lower inner wall surface of the cylindrical inner wall portion 19, the annular wall portion 10 integrally extends obliquely upward from the entire circumferential direction toward the radial center. The lower wall surface of the annular wall portion 10 has a frustoconical shape. A space 24 having an open top is formed by the annular wall portion 10 and the inner wall surface of the cylindrical inner wall portion 19. A substantially circular discharge hole 25 is opened at the radial center of the annular wall 10. The discharge port 25 communicates with the inside of the container port 3. The discharge holes 25 are formed in the range of φ5.0 mm to φ12.0 mm. An annular valve seat 26 is formed around the discharge hole 25. The annular valve seat 26 is formed on an inverted conical surface 28 (an annular tapered surface or a bowl shape surface expanded upward).

図２及び図３に示すように、環状壁部１０の環状弁座２６（倒立円錐状面２８）には、径方向に沿う流通溝２７が１箇所形成される。該流通溝２７は、ヒンジ６側とは反対側の位置に形成される。該流通溝２７は、断面形状が所定幅を有し浅いコ字状に形成される。流通溝２７の対向する側面２７ｂは、底部２７ａに向かって互いに近接するように傾斜面でそれぞれ形成される。流通溝２７の底面２７ａと、対向する側面２７ｂとは湾曲面２７ｃでそれぞれ接続される。流通溝２７の幅寸法Ｗは、０．２ｍｍ〜３．０ｍｍの範囲、好ましくは０．６ｍｍ〜１．２ｍｍの範囲で形成される。流通溝２７の深さ寸法Ｈは、０．０２ｍｍ〜０．０６ｍｍの範囲で形成される。湾曲面２７ｃの曲率半径Ｒは０．２ｍｍ〜０．６ｍｍの範囲で形成される。なお、流通溝２７は、断面Ｖ字状に形成してもよい。   As shown in FIGS. 2 and 3, the annular valve seat 26 (inverted conical surface 28) of the annular wall portion 10 is formed with one flow groove 27 along the radial direction. The flow groove 27 is formed at a position opposite to the hinge 6 side. The circulation groove 27 is formed in a shallow U shape with a predetermined cross-sectional shape. The opposing side surfaces 27b of the flow grooves 27 are respectively formed as inclined surfaces so as to be close to each other toward the bottom portion 27a. The bottom surface 27a of the flow groove 27 and the opposite side surface 27b are connected by a curved surface 27c. The width dimension W of the flow groove 27 is formed in the range of 0.2 mm to 3.0 mm, preferably in the range of 0.6 mm to 1.2 mm. The depth dimension H of the flow groove 27 is formed in the range of 0.02 mm to 0.06 mm. The curvature radius R of the curved surface 27c is formed in the range of 0.2 mm to 0.6 mm. The flow groove 27 may be formed in a V-shaped cross section.

図１及び図２に示すように、環状水平壁部２０の外径は円筒状外側壁部１８の外径より小径で、その外壁面に周方向に沿って環状に延びる突条係止部３１が形成される。該環状水平壁部２０の外壁面に蓋体５が嵌合される。環状水平壁部２０の下面には、円筒状外側壁部１８と同心状に環状シール部３２が垂設される。該環状シール部３２の下端が容器口部３の上端に密着される。   As shown in FIGS. 1 and 2, the outer diameter of the annular horizontal wall portion 20 is smaller than the outer diameter of the cylindrical outer wall portion 18, and the protrusion locking portion 31 that extends annularly along the circumferential direction on the outer wall surface. Is formed. The lid 5 is fitted to the outer wall surface of the annular horizontal wall portion 20. An annular seal portion 32 is suspended from the lower surface of the annular horizontal wall portion 20 concentrically with the cylindrical outer wall portion 18. The lower end of the annular seal portion 32 is in close contact with the upper end of the container mouth portion 3.

図１及び図４に示すように、逆止弁１２は、主キャップ体１１の円筒状内側壁部１９の内壁面に当接する円筒状支持部３４と、該円筒状支持部３４の内壁面から一体的に径方向中心に向かって延びる複数の弾性片３５と、各弾性片３５の先端部に一体的に接続され、吐出孔２５を開閉する弁部３６と、各弾性片３５の間に設けられ、吐出孔２５からの内容物が流通する複数の流通孔３７とから構成される。   As shown in FIGS. 1 and 4, the check valve 12 includes a cylindrical support portion 34 that contacts the inner wall surface of the cylindrical inner wall portion 19 of the main cap body 11, and an inner wall surface of the cylindrical support portion 34. Provided between each elastic piece 35 and a plurality of elastic pieces 35 that integrally extend toward the center in the radial direction, a valve portion 36 that is integrally connected to the tip of each elastic piece 35 and opens and closes the discharge hole 25. And a plurality of flow holes 37 through which the contents from the discharge holes 25 flow.

各弾性片３５は、円筒状支持部３４の上部内壁面から径方向中心に向かって、且つ斜め下方にやや湾曲して延びている。本実施形態では、弾性片３５は、周方向に９０°ピッチで４箇所形成され、各弾性片３５間に流通孔３７が９０°ピッチで４箇所形成される。また、各弾性片３５の先端部が弁部３６の外周部の上縁に一体的に接続される。該弁部３６は、ドーム状を呈し、詳しくは、平面視形状が円形状で、上方へ向う凸状の湾曲壁部で構成される。また、弁部３６の外周部は、環状弁座２６（倒立円錐状面２８）に着座するように倒立円錐状面２９（上方に拡径した環状テーパ面やすり鉢状面）に形成される。該弁部３６の上面には球状凸部３８が突設される。   Each elastic piece 35 extends from the upper inner wall surface of the cylindrical support portion 34 toward the center in the radial direction and slightly curved downward. In the present embodiment, the elastic pieces 35 are formed at four positions with a 90 ° pitch in the circumferential direction, and the flow holes 37 are formed at four positions with a 90 ° pitch between the elastic pieces 35. Further, the distal end portion of each elastic piece 35 is integrally connected to the upper edge of the outer peripheral portion of the valve portion 36. The valve portion 36 has a dome shape. Specifically, the valve portion 36 has a circular shape in plan view, and is configured by a convex curved wall portion facing upward. Moreover, the outer peripheral part of the valve part 36 is formed in the inverted conical surface 29 (annular taper surface mortar-shaped surface diameter-expanded upward) so that it may seat on the annular valve seat 26 (inverted conical surface 28). A spherical convex portion 38 protrudes from the upper surface of the valve portion 36.

図１及び図４に示すように、案内筒状体１３は、逆止弁１２の上方に配置される。該案内筒状体１３は、主キャップ体１１の円筒状内側壁部１９に嵌合される円筒状支持部４０と、円筒状支持部４０の内側に同心状に配置され、内部に吐出通路４１を有する円筒状案内部４２と、円筒状支持部４０の上端と円筒状案内部４２の下端とを一体的に接続する環状水平壁部４３とから構成される。環状水平壁部４３には、円筒状支持部４０の外周面から径方向に突設される環状鍔部４３ａが形成される。円筒状支持部４０は、逆止弁１２を構成する円筒状支持部３４の上方に配置される。円筒状支持部４０の外壁面には、周方向に延びる環状突条部４４が形成される。円筒状支持部４０の周壁部の厚みと、逆止弁１２の円筒状支持部３４の周壁部の厚みとは略同一である。   As shown in FIGS. 1 and 4, the guide cylindrical body 13 is disposed above the check valve 12. The guide cylindrical body 13 is disposed concentrically on the inner side of the cylindrical support portion 40 and the cylindrical support portion 40 fitted to the cylindrical inner wall portion 19 of the main cap body 11, and inside the discharge passage 41. The cylindrical guide part 42 which has this, and the cyclic | annular horizontal wall part 43 which connects the upper end of the cylindrical support part 40, and the lower end of the cylindrical guide part 42 integrally. The annular horizontal wall 43 is formed with an annular flange 43 a that protrudes in the radial direction from the outer peripheral surface of the cylindrical support portion 40. The cylindrical support portion 40 is disposed above the cylindrical support portion 34 constituting the check valve 12. An annular protrusion 44 extending in the circumferential direction is formed on the outer wall surface of the cylindrical support portion 40. The thickness of the peripheral wall portion of the cylindrical support portion 40 and the thickness of the peripheral wall portion of the cylindrical support portion 34 of the check valve 12 are substantially the same.

図１及び図２に示すように、蓋体５は、主キャップ体１１の円筒状外側壁部１８にヒンジ６を介して一体的に接続されている。該蓋体５は、ヒンジ６を介して主キャップ体１１の円筒状外側壁部１８の外壁面に接続される円筒状の胴部５０と、該胴部５０の上端の周方向全域に一体的に接続される天面部５１とから構成される。天面部５１の径方向中央部には、キャップ本体４を構成する案内筒状体１３の円筒状案内部４２の上端内部に緊密に嵌合する円筒状密着部５２が形成される。胴部５０の下部内壁面には、周方向に環状に延びる突条係止部５３が形成される。胴部５０の上部外壁面で、ヒンジ６側と反対側には、使用者が把持する把持部５４が周方向に沿う所定範囲で外方に向かって突設される。   As shown in FIGS. 1 and 2, the lid 5 is integrally connected to the cylindrical outer wall portion 18 of the main cap body 11 via a hinge 6. The lid body 5 is integrated with the cylindrical body portion 50 connected to the outer wall surface of the cylindrical outer wall portion 18 of the main cap body 11 via the hinge 6 and the entire circumferential direction of the upper end of the body portion 50. It is comprised from the top | upper surface part 51 connected to. A cylindrical contact portion 52 that fits tightly inside the upper end of the cylindrical guide portion 42 of the guide cylindrical body 13 constituting the cap body 4 is formed at the center portion in the radial direction of the top surface portion 51. On the lower inner wall surface of the body portion 50, a protrusion locking portion 53 that extends annularly in the circumferential direction is formed. On the opposite side of the upper outer wall surface of the trunk portion 50 from the hinge 6 side, a grip portion 54 to be gripped by the user protrudes outward in a predetermined range along the circumferential direction.

次に、本キャップ１を組み立て、容器口部３に装着する方法を説明する。
まず、主キャップ体１１の環状壁部１０の上面に、逆止弁１２を上方から組み込む。詳しくは、逆止弁１２の円筒状支持部３４の外壁面が主キャップ体１１の円筒状内側壁部１９の内壁面に沿うようにして、逆止弁１２を環状壁部１０の上面に配置する。すなわち、逆止弁１２を、上方から環状壁部１０と円筒状内側壁部１９の内壁面とで囲まれた上方を開放した空間２４内に組み込むようにする。 Next, a method for assembling the cap 1 and attaching it to the container mouth 3 will be described.
First, the check valve 12 is assembled on the upper surface of the annular wall portion 10 of the main cap body 11 from above. Specifically, the check valve 12 is arranged on the upper surface of the annular wall portion 10 so that the outer wall surface of the cylindrical support portion 34 of the check valve 12 is along the inner wall surface of the cylindrical inner wall portion 19 of the main cap body 11. To do. That is, the check valve 12 is incorporated into a space 24 that is open from above and surrounded by the annular wall portion 10 and the inner wall surface of the cylindrical inner wall portion 19.

次に、案内筒状体１３を、その円筒状支持部４０の外壁面が主キャップ体１１の円筒状内側壁部１９の内壁面に沿うように、逆止弁１２の上方に押し込むようにして組み込み、案内筒状体１３の円筒状支持部４０の外壁面に設けた環状突条部４４を主キャップ体１１の円筒状内側壁部１９の内壁面に設けた環状嵌合凹部２３に嵌合すると共に、案内筒状体１３の環状鍔部４３ａを環状水平壁部２０の上面に当接させて組み付ける。この結果、逆止弁１２の弁部３６の外周部に設けた倒立円錐状面２９が、環状壁部１０の吐出孔２５周辺の環状弁座２６（倒立円錐状面２８）に密着して、且つ弁部３６の下壁面と環状壁部１０の下壁面とが面一で連続するようになり、弁部３６の下壁面全域が容器口部３内に臨むようになる。また、逆止弁１２の弁部３６の下端（外周部）は、組み込み前の位置よりも上方に位置するために、湾曲した各弾性片３５の下向きの付勢力（復元力）により、逆止弁１２の弁部３６の倒立円錐状面２９が環状壁部１０の吐出孔２５周辺の環状弁座２６（倒立円錐状面２８）に密着して押圧するようになる。また、逆止弁１２の弁部３６（吐出孔２５）の直上に、案内筒状体１３の円筒状案内部４２が位置する。これにより、キャップ本体４の組み立てが完了する。   Next, the guide cylindrical body 13 is pushed above the check valve 12 so that the outer wall surface of the cylindrical support portion 40 is along the inner wall surface of the cylindrical inner wall portion 19 of the main cap body 11. The annular protrusion 44 provided on the outer wall surface of the cylindrical support portion 40 of the built-in guide cylindrical body 13 is fitted into the annular fitting recess 23 provided on the inner wall surface of the cylindrical inner wall portion 19 of the main cap body 11. At the same time, the annular flange 43a of the guide cylinder 13 is brought into contact with the upper surface of the annular horizontal wall 20 and assembled. As a result, the inverted conical surface 29 provided on the outer peripheral portion of the valve portion 36 of the check valve 12 is in close contact with the annular valve seat 26 (inverted conical surface 28) around the discharge hole 25 of the annular wall portion 10, In addition, the lower wall surface of the valve portion 36 and the lower wall surface of the annular wall portion 10 are flush with each other, and the entire lower wall surface of the valve portion 36 faces the inside of the container mouth portion 3. In addition, since the lower end (outer peripheral portion) of the valve portion 36 of the check valve 12 is positioned above the position before assembly, the check force is caused by the downward urging force (restoring force) of each curved elastic piece 35. The inverted conical surface 29 of the valve portion 36 of the valve 12 comes into close contact with and presses the annular valve seat 26 (inverted conical surface 28) around the discharge hole 25 of the annular wall portion 10. In addition, the cylindrical guide portion 42 of the guide cylindrical body 13 is located immediately above the valve portion 36 (discharge hole 25) of the check valve 12. Thereby, the assembly of the cap body 4 is completed.

次に、キャップ本体４に蓋体５を被冠する際には、ヒンジ６を折り曲げて蓋体５をキャップ本体４の上方から覆うように被せる。すると、蓋体５の胴部５０に設けた突条係止部５３が、キャップ本体４の環状水平壁部２０に設けた突条係止部３１を乗り越えるように係合すると共に、蓋体５の天面部５１に設けた円筒状密着部５２がキャップ本体４の案内筒状体１３を構成する円筒状案内部４２の上端内部に緊密に嵌合される。   Next, when the cap body 4 is covered with the lid body 5, the hinge 6 is bent so that the lid body 5 is covered from above the cap body 4. Then, the ridge locking portion 53 provided on the body portion 50 of the lid body 5 engages so as to get over the ridge locking portion 31 provided on the annular horizontal wall portion 20 of the cap body 4, and the lid body 5. A cylindrical contact portion 52 provided on the top surface portion 51 of the cap body 4 is tightly fitted inside the upper end of the cylindrical guide portion 42 constituting the guide cylindrical body 13 of the cap body 4.

次に、キャップ本体４を容器口部３に装着する際には、容器口部３の周壁部を、キャップ本体４の円筒状内側壁部１９と円筒状外側壁部１８との間の環状空間２２内に挿入して、容器口部３の外壁面に設けた雄ねじ部１５と、キャップ本体４の円筒状外側壁部１８の内壁面に設けた雌ねじ部２１とを螺合する。すると、主キャップ体１１の円筒状内側壁部１９の外壁面が容器口部３の嵌合壁部１６により圧着され、主キャップ体１１の環状水平壁部２０の下面から垂設された環状シール部３２の下端が、容器口部３の上端に密着される。このようにして、本キャップ１の容器口部３への装着が完了する。なお、本実施形態では、キャップ１を容器口部３へ螺合により装着する方法を説明したが、他の装着方法例えば打栓方式により装着してもよい。   Next, when the cap body 4 is attached to the container mouth portion 3, the peripheral wall portion of the container mouth portion 3 is an annular space between the cylindrical inner wall portion 19 and the cylindrical outer wall portion 18 of the cap body 4. It inserts in 22 and the external thread part 15 provided in the outer wall surface of the container mouth part 3 and the internal thread part 21 provided in the inner wall surface of the cylindrical outer wall part 18 of the cap main body 4 are screwed together. Then, the outer wall surface of the cylindrical inner wall portion 19 of the main cap body 11 is pressure-bonded by the fitting wall portion 16 of the container mouth portion 3, and the annular seal suspended from the lower surface of the annular horizontal wall portion 20 of the main cap body 11. The lower end of the portion 32 is in close contact with the upper end of the container mouth portion 3. In this way, the attachment of the cap 1 to the container mouth 3 is completed. In the present embodiment, the method of attaching the cap 1 to the container opening 3 by screwing has been described. However, other attachment methods such as a plugging method may be used.

次に、本発明の実施の形態に係るキャップ１の作用を説明する。
内容物を使用する際には、まず、図６（ａ）に示すように、蓋体５を開いて、キャップ本体４の案内筒状体１３を外部に露出させる。
次に、図６（ｂ）に示すように、使用者は案内筒状体１３の吐出通路４１が下方を向くように容器２を傾けて吐出姿勢にした状態で、容器２の胴部２ａを圧搾して容器２に内圧を加える。すると、容器２の内圧が逆止弁１２の弁部３６の下壁面全域に作用することで、逆止弁１２の各弾性片３５が屈曲するように弾性変形して、弁部３６の外周部の倒立円錐状面２９が環状壁部１０の吐出孔２５周辺の環状弁座２６（倒立円錐状面２８）から離脱される。この結果、環状壁部１０の吐出孔２５が開放されて、適量の内容物が容器口部３内から環状壁部１０の截頭円錐状の下壁面に沿って吐出孔２５に集まり、該吐出孔２５から逆止弁１２の各流通孔３７及び案内筒状体１３の円筒状案内部４２の吐出通路４１を経て外部に吐出される。 Next, the operation of the cap 1 according to the embodiment of the present invention will be described.
When using the contents, first, as shown in FIG. 6A, the lid 5 is opened to expose the guide cylindrical body 13 of the cap body 4 to the outside.
Next, as shown in FIG. 6 (b), the user tilts the container 2 in the discharge posture so that the discharge passage 41 of the guide cylindrical body 13 faces downward, and the body 2a of the container 2 is moved. Squeeze to apply internal pressure to the container 2. Then, when the internal pressure of the container 2 acts on the entire lower wall surface of the valve portion 36 of the check valve 12, each elastic piece 35 of the check valve 12 is elastically deformed so as to be bent, and the outer peripheral portion of the valve portion 36. The inverted conical surface 29 is detached from the annular valve seat 26 (inverted conical surface 28) around the discharge hole 25 of the annular wall 10. As a result, the discharge hole 25 of the annular wall portion 10 is opened, and an appropriate amount of contents gathers in the discharge hole 25 along the lower conical conical wall surface of the annular wall portion 10 from within the container mouth portion 3. From the hole 25, it discharges outside through each flow hole 37 of the check valve 12 and the discharge passage 41 of the cylindrical guide part 42 of the guide cylindrical body 13.

その後、内容物を適量吐出した後容器２の胴部２ａへの圧搾を止めて、図６（ｃ）に示すように、容器２を正立姿勢に戻そうとするとき、容器２への内圧が解除されるために、逆止弁１２の各弾性片３５が復元して、弁部３６の外周部の倒立円錐状面２９が環状壁部１０の吐出孔２５周辺の環状弁座２６（倒立円錐状面２８）に着座して、弁部３６により環状壁部１０の吐出孔２５が閉塞される。このとき、容器２への内圧が解除された初期段階では、逆止弁１２の弁部３６から環状弁座２６への押圧力が低いために流通溝２７が開放された状態で、案内筒状体１３の吐出通路４１から外部に吐出されなかった内容物（案内筒状体１３と、逆止弁１２及び環状壁部１０との間の内容物）は、この流通溝２７から容器２内に戻るようになる。そして、図６（ｄ）に示すように、その後次第に、弁部２６から環状弁座２６への押圧力が高くなり弁部３６が弾性を有するために流通溝２７の開口面積が減少して、最終的に表面張力により内容物が流通溝２７の極小の開口を閉塞するために、容器２内を密封状態に維持することができる。このように、使用直後、使用者が手でキャップ１を操作することなく、吐出されなかったキャップ本体４内の内容物を容器２内に戻しつつ、容器２内を迅速に密封することができ、空気の容器２内への流入を抑制することができる。   After that, after discharging a proper amount, the squeezing of the body 2a of the container 2 is stopped, and when the container 2 is returned to the upright posture as shown in FIG. Is released, each elastic piece 35 of the check valve 12 is restored, and the inverted conical surface 29 of the outer peripheral portion of the valve portion 36 becomes the annular valve seat 26 (inverted) around the discharge hole 25 of the annular wall portion 10. Sitting on the conical surface 28), the discharge hole 25 of the annular wall part 10 is closed by the valve part 36. At this time, at the initial stage when the internal pressure to the container 2 is released, the pressure from the valve portion 36 of the check valve 12 to the annular valve seat 26 is low, so that the flow groove 27 is opened and the guide cylinder shape is opened. The contents that are not discharged to the outside from the discharge passage 41 of the body 13 (the contents between the guide cylindrical body 13 and the check valve 12 and the annular wall portion 10) enter the container 2 from the flow groove 27. Come back. And as shown in FIG.6 (d), since the pressing force from the valve part 26 to the annular valve seat 26 becomes high gradually after that and the valve part 36 has elasticity, the opening area of the flow groove 27 decreases, Eventually, the contents close the very small opening of the flow groove 27 due to the surface tension, so that the inside of the container 2 can be maintained in a sealed state. Thus, immediately after use, the user can quickly seal the inside of the container 2 while returning the contents in the cap body 4 that has not been discharged into the container 2 without operating the cap 1 by hand. Inflow of air into the container 2 can be suppressed.

次に、図１及び図６（ｄ）に示すように、ヒンジ６を折り曲げて蓋体５を、キャップ本体４の上方から覆うように被せれば、蓋体５の胴部５０に設けた突条係止部５３が、キャップ本体４の円筒状嵌合壁部３０に設けた突条係止部３１を乗り越えるように係合すると共に、蓋体５の天面部５１に設けた円筒状密着部５２が、キャップ本体４の案内筒状体１３を構成する円筒状案内部４２の上端内部に緊密に嵌合される。この時、吐出されずに残った内容物を容器２内に戻すことにより、案内筒状体１３の吐出通路４１（円筒状案内部４２内）の内容物の残存面を下げることができるので、蓋体５をキャップ本体４上に被冠して、蓋体５の円筒状密着部５２を円筒状案内部４２内に嵌合する際の内容物の飛散を防ぐことができ、蓋体５の円筒状密着部５２への内容物の付着も防ぐことができる。そして、蓋体５をキャップ本体４に被冠することで、キャップ本体４内（案内筒状体１３と、逆止弁１２及び環状壁部１０との間）への異物の混入を抑制すると共に、容器２内を二重で密封することができる。しかも、キャップ本体４内は蓋体５により密封されているので、環状壁部１０上の空間２４に内容物が若干残存したとしても、その内容物が酸化することはない。   Next, as shown in FIG. 1 and FIG. 6 (d), if the hinge 6 is bent and the cover body 5 is covered so as to cover from above the cap body 4, the protrusion provided on the body portion 50 of the cover body 5. The cylindrical locking portion 53 is engaged with the protruding portion locking portion 31 provided on the cylindrical fitting wall portion 30 of the cap body 4 so as to get over the cylindrical locking portion provided on the top surface portion 51 of the lid 5. 52 is tightly fitted inside the upper end of the cylindrical guide portion 42 constituting the guide cylindrical body 13 of the cap body 4. At this time, by returning the contents that are not discharged into the container 2, the remaining surface of the contents in the discharge passage 41 (in the cylindrical guide portion 42) of the guide cylindrical body 13 can be lowered. The lid 5 can be crowned on the cap body 4 to prevent the contents from being scattered when the cylindrical contact portion 52 of the lid 5 is fitted into the cylindrical guide portion 42. It is also possible to prevent the contents from adhering to the cylindrical contact portion 52. Then, by covering the cap body 5 with the cap body 4, it is possible to prevent foreign matter from entering the cap body 4 (between the guide cylindrical body 13, the check valve 12 and the annular wall portion 10). The inside of the container 2 can be double sealed. Moreover, since the inside of the cap body 4 is sealed by the lid body 5, even if the contents remain in the space 24 on the annular wall portion 10, the contents are not oxidized.

以上説明したように、本発明の実施の形態に係るキャップ１では、キャップ本体４は、径方向中心に向かって斜め上方に延び、径方向中央部に位置する吐出孔２５と、該吐出孔２５周辺に設けられる環状弁座２６とを有する環状壁部１０と、該環状壁部１０の上方に配置され、弁部３６が環状弁座２６から離脱または着座して吐出孔２５を開閉する逆止弁１２とを備え、環状弁座２６と弁部３６とは互いの倒立円錐状面２８、２９で当接して、環状弁座２６と弁部３６との間に径方向に向かう流通溝２７を形成される。これにより、特に、容器２への内圧が解除された初期段階にて、案内筒状体１３の吐出通路１４から外部に吐出されなかった内容物が流通溝２７から容器２内に戻る。その後最終的に、逆止弁１２の押圧力（復元力）により流通溝２７の開口が極小となり、表面張力により内容物が流通溝２７を閉塞するために、容器２内を密封状態に維持することができる。しかも、環状弁座２６と弁部３６とは互いの倒立円錐状面２８、２９にて密着するように構成して、流通溝２７を、環状弁座２６の倒立円錐状面２８に形成しているので、容器２への内圧が解除された初期段階においては、内容物が流通溝２７を通過し易くなる。   As described above, in the cap 1 according to the embodiment of the present invention, the cap body 4 extends obliquely upward toward the radial center, the discharge hole 25 located in the radial center, and the discharge hole 25. An annular wall portion 10 having an annular valve seat 26 provided in the periphery, and a check that is disposed above the annular wall portion 10 and opens or closes the discharge hole 25 when the valve portion 36 is detached from or seated on the annular valve seat 26. The annular valve seat 26 and the valve portion 36 are in contact with each other by the inverted conical surfaces 28 and 29, and a flow groove 27 directed in the radial direction is formed between the annular valve seat 26 and the valve portion 36. It is formed. Thereby, in particular, at the initial stage when the internal pressure to the container 2 is released, the content that has not been discharged to the outside from the discharge passage 14 of the guide cylindrical body 13 returns from the flow groove 27 into the container 2. After that, finally, the opening of the flow groove 27 is minimized by the pressing force (restoring force) of the check valve 12, and the contents close the flow groove 27 by the surface tension, so that the inside of the container 2 is maintained in a sealed state. be able to. In addition, the annular valve seat 26 and the valve portion 36 are configured to be in close contact with each other with the inverted conical surfaces 28 and 29, and the flow groove 27 is formed in the inverted conical surface 28 of the annular valve seat 26. Therefore, in the initial stage where the internal pressure on the container 2 is released, the contents easily pass through the flow groove 27.

また、本発明の実施の形態に係るキャップ１では、流通溝２７は、環状弁座２６の、ヒンジ６側とは反対側の位置に１箇所形成されているので、容器２への内圧が解除された初期段階にて、吐出通路１４から外部に吐出されなかった内容物が流通溝２７から容器２内に戻り易くなる。   Further, in the cap 1 according to the embodiment of the present invention, the flow groove 27 is formed at one position on the opposite side of the annular valve seat 26 from the hinge 6 side, so the internal pressure on the container 2 is released. In the initial stage, the contents that have not been discharged to the outside from the discharge passage 14 can easily return from the flow groove 27 into the container 2.

なお、本発明の実施の形態に係るキャップ１では、流通溝２７は、環状弁座２６側の倒立円錐状面２８に形成されているが、弁部３６側の倒立円錐状面２９に形成してもよい。   In the cap 1 according to the embodiment of the present invention, the flow groove 27 is formed on the inverted conical surface 28 on the annular valve seat 26 side, but is formed on the inverted conical surface 29 on the valve portion 36 side. May be.

また、本発明の実施の形態に係るキャップ１では、環状弁座２６と弁部３６とを互いの倒立円錐状面２８、２９で当接するように構成しているが、正立円錐状面で当接するように構成してもよい。   Further, in the cap 1 according to the embodiment of the present invention, the annular valve seat 26 and the valve portion 36 are configured to contact each other with the inverted conical surfaces 28 and 29, but the upright conical surface is used. You may comprise so that it may contact | abut.

１ キャップ，２ 容器，３ 容器口部，４ キャップ本体，５ 蓋体，６ ヒンジ，１０ 環状壁部，１２ 逆止弁，２５ 吐出孔，２６ 環状弁座，３６ 弁部，２７ 流通溝，２８、２９ 倒立円錐状面   DESCRIPTION OF SYMBOLS 1 Cap, 2 Container, 3 Container mouth part, 4 Cap main body, 5 Cover body, 6 Hinge, 10 Annular wall part, 12 Check valve, 25 Discharge hole, 26 Annular valve seat, 36 Valve part, 27 Flow groove, 28 29 Inverted conical surface

本発明は、上記課題を解決するための手段として、請求項１に記載した発明は、容器口部に嵌合されるキャップ本体を備えた、合成樹脂製のキャップであって、該キャップ本体は、前記容器口部に連通する吐出孔と、該吐出孔周辺に設けられる環状弁座と、弁部が前記環状弁座から離脱または着座して前記吐出孔を開閉する逆止弁と、を備え、前記環状弁座と前記弁部とは互いの円錐状面で当接して、前記環状弁座と前記弁部との間に径方向に向かう流通溝が形成されることを特徴とするものである。
請求項２に記載した発明は、請求項１に記載した発明において、前記逆止弁を成形する合成樹脂は、前記環状弁座を成形する合成樹脂よりも高弾性であることを特徴とするものである。
請求項１及び２の発明では、内容物の使用時には、容器の胴部を圧搾して容器に内圧を加えれば、容器の内圧により逆止弁が弾性変形して、弁部が環状弁座から離脱すると共に、内容物が吐出孔から外部に吐出される。一方、容器への内圧が解除されると、逆止弁が復元して弁部が環状弁座に互いの円錐状面を介して着座するために、吐出孔が閉塞されて、迅速に容器内を密封状態に維持でき、空気の容器内への流入を抑制することができる。この時、容器への内圧が解除された初期段階では、逆止弁の弁部から環状弁座への押圧力が低いために流通溝が開放された状態で、外部に吐出されなかった内容物は、この流通溝から容器内に戻るようになる。その後次第に、弁部から環状弁座への押圧力が高くなり流通溝の開口面積が減少すると共に、表面張力により内容物が流通溝の極小の開口を閉塞するようになるために、容器内を密封状態に維持することができる。また、流通溝は、互いの円錐状面で当接される環状弁座と弁部との間に形成されているので、容器への内圧が解除された初期段階では内容物が流通溝を通過し易くなり、その後最終的には容器を逆さにしても、容器自身を振ったりしなければ、容器内の内容物が流通溝を通過して外部に吐出されることはほとんどない。 The present invention provides, as means for solving the above-mentioned problems, the invention described in claim 1 is a cap made of a synthetic resin provided with a cap body fitted to a container mouth portion, and the cap body is A discharge hole communicating with the container opening, an annular valve seat provided around the discharge hole, and a check valve that opens or closes the discharge hole when the valve part is detached from or seated on the annular valve seat. The annular valve seat and the valve portion are in contact with each other in a conical surface, and a flow groove in the radial direction is formed between the annular valve seat and the valve portion. is there.
The invention described in claim 2 is characterized in that, in the invention described in claim 1, the synthetic resin for molding the check valve is higher in elasticity than the synthetic resin for molding the annular valve seat. It is.
In the first and second aspects of the present invention, when the contents are used, if the body portion of the container is squeezed to apply an internal pressure to the container, the check valve is elastically deformed by the internal pressure of the container, and the valve portion is removed from the annular valve seat. At the same time, the contents are discharged from the discharge hole to the outside. On the other hand, when the internal pressure on the container is released, the check valve is restored and the valve portion is seated on the annular valve seat via the conical surface, so that the discharge hole is closed and the container is quickly Can be maintained in a sealed state, and the inflow of air into the container can be suppressed. At this time, at the initial stage when the internal pressure to the container was released, the pressure that was pressed from the valve portion of the check valve to the annular valve seat was low, so the contents that were not discharged to the outside with the flow groove opened Returns from the flow channel into the container. Then, gradually, the pressing force from the valve portion to the annular valve seat is increased, the opening area of the flow groove is reduced, and the content closes the minimum opening of the flow groove due to the surface tension. It can be kept sealed. In addition, since the flow groove is formed between the annular valve seat and the valve portion that are in contact with each other in the conical surface, the contents pass through the flow groove at the initial stage when the internal pressure to the container is released. If the container itself is not shaken even if the container is finally turned upside down, the contents in the container hardly pass through the flow channel and are discharged outside.

本発明は、上記課題を解決するための手段として、請求項１に記載した発明は、容器口部に嵌合されるキャップ本体を備えた、合成樹脂製のキャップであって、該キャップ本体は、前記容器口部に連通する吐出孔と、該吐出孔周辺に設けられる環状弁座と、全体がドーム状に形成される弁部の倒立円錐状の外周面全域が前記環状弁座から離脱または着座して前記吐出孔を開閉する逆止弁と、を備え、前記環状弁座と前記弁部とは互いの倒立円錐状面で当接して、前記環状弁座と前記弁部との間に径方向に向かう流通溝が形成されることを特徴とするものである。
請求項２に記載した発明は、請求項１に記載した発明において、前記逆止弁を成形する合成樹脂は、前記環状弁座を成形する合成樹脂よりも高弾性であることを特徴とするものである。
請求項１及び２の発明では、内容物の使用時には、容器の胴部を圧搾して容器に内圧を加えれば、容器の内圧により逆止弁が弾性変形して、弁部が環状弁座から離脱すると共に、内容物が吐出孔から外部に吐出される。一方、容器への内圧が解除されると、逆止弁が復元して弁部が環状弁座に互いの倒立円錐状面を介して着座するために、吐出孔が閉塞されて、迅速に容器内を密封状態に維持でき、空気の容器内への流入を抑制することができる。この時、容器への内圧が解除された初期段階では、逆止弁の弁部から環状弁座への押圧力が低いために流通溝が開放された状態で、外部に吐出されなかった内容物は、この流通溝から容器内に戻るようになる。その後次第に、弁部から環状弁座への押圧力が高くなり流通溝の開口面積が減少すると共に、表面張力により内容物が流通溝の極小の開口を閉塞するようになるために、容器内を密封状態に維持することができる。また、流通溝は、互いの円錐状面で当接される環状弁座と弁部との間に形成されているので、容器への内圧が解除された初期段階では内容物が流通溝を通過し易くなり、その後最終的には容器を逆さにしても、容器自身を振ったりしなければ、容器内の内容物が流通溝を通過して外部に吐出されることはほとんどない。 The present invention provides, as means for solving the above-mentioned problems, the invention described in claim 1 is a cap made of a synthetic resin provided with a cap body fitted to a container mouth portion, and the cap body is A discharge hole communicating with the container mouth, an annular valve seat provided around the discharge hole, and an entire inverted conical outer peripheral surface of the valve part formed entirely in a dome shape are separated from the annular valve seat or A check valve that sits and opens and closes the discharge hole, and the annular valve seat and the valve portion are in contact with each other by an inverted conical surface, and between the annular valve seat and the valve portion. A flow groove extending in the radial direction is formed.
The invention described in claim 2 is characterized in that, in the invention described in claim 1, the synthetic resin for molding the check valve is higher in elasticity than the synthetic resin for molding the annular valve seat. It is.
In the first and second aspects of the present invention, when the contents are used, if the body portion of the container is squeezed to apply an internal pressure to the container, the check valve is elastically deformed by the internal pressure of the container, and the valve portion is removed from the annular valve seat. At the same time, the contents are discharged from the discharge hole to the outside. On the other hand, when the internal pressure on the container is released, the check valve is restored and the valve part is seated on the annular valve seat via the inverted conical surface, so that the discharge hole is closed and the container is quickly The inside can be maintained in a sealed state, and the inflow of air into the container can be suppressed. At this time, at the initial stage when the internal pressure to the container was released, the pressure that was pressed from the valve portion of the check valve to the annular valve seat was low, so the contents that were not discharged to the outside with the flow groove opened Returns from the flow channel into the container. Then, gradually, the pressing force from the valve portion to the annular valve seat is increased, the opening area of the flow groove is reduced, and the content closes the minimum opening of the flow groove due to the surface tension. It can be kept sealed. In addition, since the flow groove is formed between the annular valve seat and the valve portion that are in contact with each other in the conical surface, the contents pass through the flow groove at the initial stage when the internal pressure to the container is released. If the container itself is not shaken even if the container is finally turned upside down, the contents in the container hardly pass through the flow channel and are discharged outside.

本発明は、上記課題を解決するための手段として、請求項１に記載した発明は、容器口部に嵌合されるキャップ本体を備えた、合成樹脂製のキャップであって、該キャップ本体は、前記容器口部に連通する吐出孔と、該吐出孔周辺に設けられ、倒立円錐状面で形成される環状弁座と、上壁面が球状面で突設され、下壁面が球状面で凹設される弁部の倒立円錐状の外周面が前記環状弁座から離脱または着座して前記吐出孔を開閉する、弾性変形可能な逆止弁と、前記環状弁座に形成された、径方向に向かう流通溝と、を備え、該流通溝は、断面コ字状に形成され、その幅寸法Ｗよりも小さい深さ寸法Ｈで設定されており、前記流通溝の対向する側壁は、底部に向かって互いに近接するように傾斜面にそれぞれ形成され、前記容器口部に前記キャップが装着され、容器内の内容物の使用後、前記弁部が前記環状弁座へ着座した初期段階では、前記流通溝と前記弁体の外周面との間の開口は開放され、時間の経過に伴って、前記流通溝と前記弁体の外周面との間の開口は閉鎖されることを特徴とするものである。
請求項２に記載した発明は、請求項１に記載した発明において、前記流通溝は、その幅寸法Ｗが０．２ｍｍ〜３．０ｍｍの範囲で設定され、且つその深さ寸法Ｈが０．０２ｍｍ〜０．０６ｍｍの範囲で設定されることを特徴とするものである。
請求項１及び２の発明では、内容物の使用時には、容器の胴部を圧搾して容器に内圧を加えれば、容器の内圧により逆止弁が弾性変形して、弁部が環状弁座から離脱すると共に、内容物が吐出孔から外部に吐出される。一方、容器への内圧が解除されると、逆止弁が復元して弁部が環状弁座に互いの倒立円錐状面を介して着座するために、吐出孔が閉塞されて、迅速に容器内を密封状態に維持でき、空気の容器内への流入を抑制することができる。この時、容器への内圧が解除された初期段階では、流通溝と弁体の外周面との間の開口が開放された状態で、外部に吐出されなかった内容物は、この開口から容器内に戻るようになる。その後次第に、弁部から環状弁座への押圧力等の影響により流通溝と弁体の外周面との間の開口面積が減少すると共に、表面張力により内容物が流通溝と弁体の外周面との間の極小の開口を閉塞するようになるために、容器内を密封状態に維持することができる。また、流通溝は、互いの円錐状面で当接される環状弁座と弁部との間に形成されているので、容器への内圧が解除された初期段階では内容物が流通溝を通過し易くなり、その後最終的には容器を逆さにしても、容器自身を振ったりしなければ、容器内の内容物が流通溝を通過して外部に吐出されることはほとんどない。 The present invention provides, as means for solving the above-mentioned problems, the invention described in claim 1 is a cap made of a synthetic resin provided with a cap body fitted to a container mouth portion, and the cap body is A discharge hole communicating with the container mouth, an annular valve seat formed around the discharge hole and formed by an inverted conical surface, a top wall projecting with a spherical surface, and a bottom wall surface recessed with a spherical surface the outer peripheral surface of the inverted conical valve portion which is set to open and close the withdrawal or seating to the discharge hole from said annular valve seat, and an elastically deformable return valve, is formed in said annular valve seat, radial The flow groove is formed in a U-shaped cross section, and is set with a depth dimension H smaller than the width dimension W, and the opposing side walls of the flow groove are formed at the bottom. Are formed on inclined surfaces so as to be close to each other, and After the use of the contents in the container, the opening between the flow groove and the outer peripheral surface of the valve body is opened at the initial stage when the valve portion is seated on the annular valve seat. Along with the passage, the opening between the flow groove and the outer peripheral surface of the valve body is closed .
The invention described in claim 2 is the invention described in claim 1, wherein the flow groove has a width dimension W set in a range of 0.2 mm to 3.0 mm and a depth dimension H of 0.1 mm. It is set in the range of 02 mm to 0.06 mm .
In the first and second aspects of the present invention, when the contents are used, if the body portion of the container is squeezed to apply an internal pressure to the container, the check valve is elastically deformed by the internal pressure of the container, and the valve portion is removed from the annular valve seat. At the same time, the contents are discharged from the discharge hole to the outside. On the other hand, when the internal pressure on the container is released, the check valve is restored and the valve part is seated on the annular valve seat via the inverted conical surface, so that the discharge hole is closed and the container is quickly The inside can be maintained in a sealed state, and the inflow of air into the container can be suppressed. At this time, in the initial stage where the internal pressure is released to the container, with the opening is opened between the outer peripheral surface of the flow channel and the valve body, the contents of which have not been discharged to the outside, the container from the opening To return to. After that, the opening area between the flow groove and the outer peripheral surface of the valve body decreases due to the influence of the pressing force from the valve portion to the annular valve seat, etc. The inside of the container can be maintained in a sealed state in order to close the very small opening between the two . In addition, since the flow groove is formed between the annular valve seat and the valve portion that are in contact with each other in the conical surface, the contents pass through the flow groove at the initial stage when the internal pressure to the container is released. If the container itself is not shaken even if the container is finally turned upside down, the contents in the container hardly pass through the flow channel and are discharged outside.

請求項３に記載した発明は、請求項１または２に記載した発明において、前記逆止弁を成形する合成樹脂は、前記環状弁座を成形する合成樹脂よりも高弾性であることを特徴とするものである。 The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, the synthetic resin for molding the check valve is more elastic than the synthetic resin for molding the annular valve seat. To do.

図２及び図３に示すように、環状壁部１０の環状弁座２６（倒立円錐状面２８）には、径方向に沿う流通溝２７が１箇所形成される。該流通溝２７は、ヒンジ６側とは反対側の位置に形成される。該流通溝２７は、断面形状が所定幅を有し浅いコ字状に形成される。流通溝２７の対向する側面２７ｂは、底部２７ａに向かって互いに近接するように傾斜面でそれぞれ形成される。流通溝２７の底面２７ａと、対向する側面２７ｂとは湾曲面２７ｃでそれぞれ接続される。流通溝２７の幅寸法Ｗは、０．２ｍｍ〜３．０ｍｍの範囲、好ましくは０．６ｍｍ〜１．２ｍｍの範囲で形成される。流通溝２７の深さ寸法Ｈは、０．０２ｍｍ〜０．０６ｍｍの範囲で形成される。湾曲面２７ｃの曲率半径Ｒは０．２ｍｍ〜０．６ｍｍの範囲で形成される。 As shown in FIGS. 2 and 3, the annular valve seat 26 (inverted conical surface 28) of the annular wall portion 10 is formed with one flow groove 27 along the radial direction. The flow groove 27 is formed at a position opposite to the hinge 6 side. The circulation groove 27 is formed in a shallow U shape with a predetermined cross-sectional shape. The opposing side surfaces 27b of the flow grooves 27 are respectively formed as inclined surfaces so as to be close to each other toward the bottom portion 27a. The bottom surface 27a of the flow groove 27 and the opposite side surface 27b are connected by a curved surface 27c. The width dimension W of the flow groove 27 is formed in the range of 0.2 mm to 3.0 mm, preferably in the range of 0.6 mm to 1.2 mm. The depth dimension H of the flow groove 27 is formed in the range of 0.02 mm to 0.06 mm. The curvature radius R of the curved surface 27c is formed in the range of 0.2 mm to 0.6 mm .

各弾性片３５は、円筒状支持部３４の上部内壁面から径方向中心に向かって、且つ斜め下方にやや湾曲して延びている。本実施形態では、弾性片３５は、周方向に９０°ピッチで４箇所形成され、各弾性片３５間に流通孔３７が９０°ピッチで４箇所形成される。また、各弾性片３５の先端部が弁部３６の外周部の上縁に一体的に接続される。該弁部３６は、上壁面が球状面で突設され、その下壁面全域が球状面で凹設される、いわゆるドーム状を呈している。また、弁部３６の外周部は、環状弁座２６（倒立円錐状面２８）に着座するように倒立円錐状面２９（上方に拡径した環状テーパ面やすり鉢状面）に形成される。該弁部３６の上壁面には球状凸部３８が突設される。 Each elastic piece 35 extends from the upper inner wall surface of the cylindrical support portion 34 toward the center in the radial direction and slightly curved downward. In the present embodiment, the elastic pieces 35 are formed at four positions with a 90 ° pitch in the circumferential direction, and the flow holes 37 are formed at four positions with a 90 ° pitch between the elastic pieces 35. Further, the distal end portion of each elastic piece 35 is integrally connected to the upper edge of the outer peripheral portion of the valve portion 36. The valve portion 36 has a so-called dome shape in which the upper wall surface protrudes with a spherical surface and the entire lower wall surface is recessed with a spherical surface . Moreover, the outer peripheral part of the valve part 36 is formed in the inverted conical surface 29 (annular taper surface mortar-shaped surface diameter-expanded upward) so that it may seat on the annular valve seat 26 (inverted conical surface 28). Spherical convex portion 38 is projected from the upper wall surface of the valve portion 36.

Claims (4)

容器口部に嵌合されるキャップ本体を備えた、合成樹脂製のキャップであって、
該キャップ本体は、
径方向中央部に位置する吐出孔と、該吐出孔周辺に設けられる環状弁座とを有する環状壁部と、
該環状壁部の上方に配置され、弁部が前記環状弁座から離脱または着座して前記吐出孔を開閉する逆止弁と、を備え、
前記環状弁座と前記弁部とは互いの円錐状面で当接して、前記環状弁座と前記弁部との間に径方向に向かう流通溝が形成されることを特徴とするキャップ。 A cap made of synthetic resin, with a cap body fitted to the container mouth,
The cap body is
An annular wall portion having a discharge hole located in a central portion in the radial direction and an annular valve seat provided around the discharge hole;
A check valve disposed above the annular wall portion, the valve portion being separated from or seated on the annular valve seat, and opening and closing the discharge hole,
The said annular valve seat and the said valve part contact | abut on a mutually conical surface, and the flow groove which goes to radial direction is formed between the said annular valve seat and the said valve part, The cap characterized by the above-mentioned. 前記逆止弁を成形する合成樹脂は、前記環状壁部を成形する合成樹脂よりも高弾性であることを特徴とする請求項１に記載のキャップ。   The cap according to claim 1, wherein the synthetic resin for molding the check valve has higher elasticity than the synthetic resin for molding the annular wall portion. 前記キャップ本体には、該キャップ本体に被冠される蓋体がヒンジを介して接続されて、
前記流通溝は、前記ヒンジとは反対側に１箇所形成されることを特徴とする請求項１または２に記載のキャップ。 The cap body is connected via a hinge to a lid that is crowned by the cap body,
The cap according to claim 1, wherein the flow groove is formed at one place on the opposite side of the hinge. 前記環状弁座に前記流通溝が形成され、
該流通溝は、その深さ寸法が、０．０２ｍｍ〜０．０６ｍｍの範囲で形成されることを特徴とする請求項１〜３のいずれかに記載のキャップ。 The flow groove is formed in the annular valve seat;
The cap according to any one of claims 1 to 3, wherein the flow groove has a depth dimension in a range of 0.02 mm to 0.06 mm.
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EP14891667.9A EP3144243B1 (en) 2014-05-14 2014-10-10 Cap
KR1020187033193A KR102110129B1 (en) 2014-05-14 2014-10-10 Cap
PCT/JP2014/077229 WO2015173979A1 (en) 2014-05-14 2014-10-10 Cap
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