JP5959570B2 - cap - Google Patents

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Publication number
JP5959570B2
JP5959570B2 JP2014100673A JP2014100673A JP5959570B2 JP 5959570 B2 JP5959570 B2 JP 5959570B2 JP 2014100673 A JP2014100673 A JP 2014100673A JP 2014100673 A JP2014100673 A JP 2014100673A JP 5959570 B2 JP5959570 B2 JP 5959570B2
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annular
valve
cylindrical
wall
wall portion
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JP2015217950A (en
Inventor
孝陽 崎村
孝陽 崎村
佐々木　昌
昌 佐々木
悟 市川
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 JP2014100673A priority Critical patent/JP5959570B2/en
Application filed by Tokyo Light Industry Co Ltd filed Critical Tokyo Light Industry Co Ltd
Priority to EP14891667.9A priority patent/EP3144243B1/en
Priority to KR1020187033193A priority patent/KR102110129B1/en
Priority to KR1020167032225A priority patent/KR102183292B1/en
Priority to CN201480078835.7A priority patent/CN106573709B/en
Priority to PCT/JP2014/077229 priority patent/WO2015173979A1/en
Priority to US14/408,832 priority patent/US9637282B2/en
Publication of JP2015217950A publication Critical patent/JP2015217950A/en
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Publication of JP5959570B2 publication Critical patent/JP5959570B2/en
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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 mounted on a container mouth of a container filled with a liquid content such as soy sauce or a fluid content having viscosity.

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）を密封するものが要求されている。   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. What seals the inside of the container (the mouth of the container) without any problem is required.

特許文献１には、容器の容器口に嵌合する弁装置に、液体導出孔を開閉する弁体と共にコイルスプリング（一般には金属製）を設け、容器の腹部を圧搾して、容器内を加圧し、弁体を上方に移動させ加圧孔兼液体導出孔を開放すると共に、使用後はスプリングの付勢力により弁体を下方に移動させ加圧孔兼液体導出孔を閉塞する弁装置が開示されている。   In Patent Document 1, a coil spring (generally made of metal) is provided in a valve device fitted to a container mouth of a container together with a valve body that opens and closes a liquid outlet hole, and the abdomen of the container is squeezed to add inside the container. Disclosed is a valve device that opens the pressurizing hole / liquid outlet hole by pressing and moving the valve body upward and closes the pressurization hole / liquid outlet hole after use by moving the valve body downward by the biasing force of the spring. Has been.

実開昭５４−１３６１５８号公報Japanese Utility Model Publication No. 54-136158

上述したように、特許文献１の発明では、弁室を形成する基端部の略中央に加圧孔兼液体導出孔を有しているので、特に、比較的粘性を有する流動性内容物の場合、容器の腹部を押圧して内圧により弁体を上方に移動させても、内容物が加圧孔兼液体導出孔に沿ってスムーズに外部に吐出できない虞がある。しかも、特許文献１の発明では、容器の内圧が加圧孔兼液体導出孔を介して弁体の一部にしか作用しないので、弁体がスムーズに上方に移動できないと考えられる。   As described above, in the invention of Patent Document 1, since the pressure hole / liquid outlet hole is provided in the approximate center of the base end portion forming the valve chamber, in particular, the fluid content having a relatively viscous property is used. In this case, even if the abdomen of the container is pressed and the valve body is moved upward by the internal pressure, the contents may not be smoothly discharged to the outside along the pressure hole / liquid outlet hole. Moreover, in the invention of Patent Document 1, since the internal pressure of the container acts only on a part of the valve body through the pressurizing hole / liquid outlet hole, it is considered that the valve body cannot smoothly move upward.

本発明は、かかる点に鑑みてなされたものであり、内容物の使用時には内容物をスムーズに外部に吐出することができ、使用後には、使用者が手で操作することなく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 such a point, and when the contents are used, the contents can be smoothly discharged to the outside, and after use, the inside of the container is sealed without being manually operated by the user. It aims at providing the cap which can be maintained in a state.

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、前記容器口部の内壁面に嵌合される筒状壁部と、該筒状壁部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、截頭円錐状の下壁面を有し、径方向中央部に吐出孔を有する環状壁部と、該環状壁部の上方に配置され、ドーム状に形成された弁部の倒立円錐状の外周面全域が前記吐出孔周辺の倒立円錐状に延びる環状弁座部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、該逆止弁の上方に配置され、前記吐出孔からの内容物の吐出通路を有する案内筒状体と、を備え、前記弁部の外周面が前記環状弁座部に着座した際、前記環状弁座部の下端縁と、前記弁部の外周面の下端縁とが一致することを特徴とするものである。
請求項１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、弁部の倒立円錐状の外周面全域が環状壁部の吐出孔周辺の環状弁座部から離脱すると共に、内容物が環状壁部の截頭円錐状の下壁面に沿って吐出孔に集まるため、適量の内容物が吐出孔からスムーズに外部に吐出される。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の倒立円錐状の外周面全域が環状壁部の吐出孔周辺の環状弁座部に着座するために、環状壁部の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。特に、請求項１の発明では、キャップ本体の環状壁部が筒状壁部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、截頭円錐状の下壁面を有しているので、使用時、内容物を環状壁部の截頭円錐状の下壁面に沿って吐出孔方向に容易に流動させることが可能になる。この構成要件は、容器内の内容物が比較的粘性を有する流動性内容物の場合特に有効である。
また、請求項１に記載した発明では、ドーム状の弁部の外周面が環状弁座部に着座した際、環状弁座部の下端縁と、弁部の外周面の下端縁とが一致するので、容器の胴部を圧搾して容器に内圧を加えた際、その内圧を逆止弁の弁部の下壁面、詳しくは下壁面の径方向中心に作用させることができ、弁部をスムーズに環状壁部の吐出孔周辺の環状弁座部から離脱させることができる。 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 cylindrical wall portion that is fitted to the inner wall surface of the container mouth portion, and extends obliquely upward from the inner wall surface of the cylindrical wall portion toward the center in the radial direction. An annular wall portion having a discharge hole in the central portion in the radial direction, and an inverted conical outer peripheral surface of the valve portion disposed above the annular wall portion and formed in a dome shape is inverted around the discharge hole. An elastically deformable check valve that opens or closes the discharge hole by separating from or seating on the annular valve seat that extends in a conical shape, and a discharge passage for contents from the discharge hole disposed above the check valve and a guide tubular body having, when the outer peripheral surface of the valve portion is seated on the annular valve seat portion, wherein And the lower edge of Jo valve seat portion, and the lower edge of the outer peripheral surface of the valve portion is characterized in that match.
According to the first aspect of the present invention, when the contents are used, the check valve is elastically deformed by the internal pressure of the container by compressing the body of the container and applying internal pressure to the container, and the inverted conical outer peripheral surface of the valve section. The entire area is detached from the annular valve seat around the discharge hole in the annular wall, and the contents gather in the discharge hole along the frustoconical lower wall surface of the annular wall. Smoothly discharged outside. On the other hand, when the internal pressure to the container is released, the check valve is restored, and the entire outer peripheral surface of the inverted conical shape of the valve portion is seated on the annular valve seat portion around the discharge hole of the annular wall portion. The discharge hole of the part 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. In particular, in the first aspect of the present invention, the annular wall portion of the cap body extends obliquely upward from the inner wall surface of the cylindrical wall portion toward the center in the radial direction, and has a truncated conical lower wall surface. Therefore, at the time of use, the contents can easily flow in the direction of the discharge hole along the truncated conical lower wall surface of the annular wall portion. This constituent requirement is particularly effective when the contents in the container are flowable contents having a relatively viscosity.
In the invention described in claim 1, when the outer peripheral surface of the dome-shaped valve portion is seated on the annular valve seat portion, the lower end edge of the annular valve seat portion and the lower end edge of the outer peripheral surface of the valve portion coincide with each other. Therefore, when the body part of the container is squeezed and internal pressure is applied to the container, the internal pressure can be applied to the lower wall surface of the valve part of the check valve, specifically the radial center of the lower wall surface. It can be made to detach | leave from the annular valve seat part around the discharge hole of an annular wall part.

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、前記キャップ本体は、前記筒状壁部と前記環状壁部とで構成する上方を開放した空間内に前記逆止弁を上方から組み込み、さらに、該逆止弁上に前記案内筒状体を上方から組み込んで構成することを特徴とするものである。
請求項２の発明では、キャップ本体を組み立てる際には、環状壁部上に逆止弁を上方から組み込み、さらに、該逆止弁上に案内筒状体を上方から組み込んで構成するので、その組付工程の作業性を向上させることができる。すなわち、組立時、構成部材を上下に反転させる等の作業が必要なく、構成部材の位置決めを複数回にわたって行う必要もなく、これにより組付け精度が良くなり、ひいては作業管理が非常に簡単なものになる。 According to a second aspect of the present invention, in the first aspect of the present invention, the cap main body is configured such that the check valve is located in a space defined by the cylindrical wall portion and the annular wall portion and opened upward. And the guide cylindrical body is assembled from above on the check valve.
In the invention of claim 2, when assembling the cap body, the check valve is assembled on the annular wall portion from above, and further, the guide cylindrical body is assembled on the check valve from above. The workability of the assembly process can be improved. In other words, there is no need to turn the components upside down at the time of assembly, and there is no need to position the components multiple times, which improves the assembly accuracy and consequently the work management is very simple. become.

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、前記逆止弁は、前記筒状壁部の内壁面に当接する筒状支持部と、該筒状支持部の内壁面の周方向全域から一体的に径方向中心に向かって延びる環状弾性部と、該環状弾性部の径方向中心部に一体的に設けられ、前記吐出孔を開閉する前記弁部と、前記環状弾性部に設けられ、前記吐出孔からの内容物が流通する流通孔と、を備え、前記環状弾性部の付勢力により、前記弁部の外周部が前記環状弁座部に押圧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、筒状支持部により逆止弁全体を環状壁部上に支持させることができ、環状弾性部により、弁部を吐出孔周辺の環状弁座部に押圧することができ、逆止弁全体をコンパクトに構成することができる。 The invention described in claim 3 is the invention described in claim 1 or 2, wherein the check valve includes a cylindrical support portion that contacts an inner wall surface of the cylindrical wall portion, and an inner portion of the cylindrical support portion. An annular elastic portion integrally extending from the entire circumferential direction of the wall surface toward the radial center; the valve portion integrally provided at the radial central portion of the annular elastic portion for opening and closing the discharge hole; and the annular A flow hole provided in the elastic portion and through which the content from the discharge hole flows, and the outer peripheral portion of the valve portion is pressed against the annular valve seat portion by the biasing force of the annular elastic portion. It is a feature.
In the invention of claim 3, the entire check valve can be supported on the annular wall portion by the cylindrical support portion, and the valve portion can be pressed against the annular valve seat portion around the discharge hole by the annular elastic portion. The entire check valve can be made compact.

本発明のキャップによれば、内容物の使用後において、使用者が手でキャップを操作することなく容器内を密封状態に迅速に復帰させることができる。また、キャップ本体の環状壁部が筒状壁部の内壁面から径方向中心に向かって斜め上方に延び、しかも、環状壁部の截頭円錐状の下壁面と弁部の下壁面とが連続するように構成されていることから、容器に内圧を加えた際、その内圧を逆止弁の弁部の下壁面全域に作用させその弁部をスムーズに上方に移動させることができ、さらには、内容物を環状壁部の截頭円錐状の下壁面に沿って吐出孔の方向に容易に流動させることができるので、容器内の内容物を、本キャップを介してスムーズに外部に吐出することができる。   According to the cap of the present invention, after the contents are used, the inside of the container can be quickly returned to the sealed state without the user manually operating the cap. Further, the annular wall portion of the cap body extends obliquely upward from the inner wall surface of the cylindrical wall portion toward the radial center, and the lower wall surface of the annular cone portion and the lower wall surface of the valve portion are continuous. Therefore, when an internal pressure is applied to the container, the internal pressure can be applied to the entire lower wall surface of the valve portion of the check valve so that the valve portion can be smoothly moved upward. The contents can be easily flowed in the direction of the discharge hole along the frustoconical lower wall surface of the annular wall, so that the contents in the container are smoothly discharged to the outside through the cap. be able to.

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）の断面図である。FIG. 3A is a plan view of a check valve which is a configuration of the main cap of FIG. 1, and FIG. 3B is a cross-sectional view of FIG. 図４（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. 4A is a plan view of a guide cylindrical body that is a configuration of the cap of FIG. 1, and FIG. 4B is a cross-sectional view of FIG. 図５は、内容物を使用する際の本キャップの作用を段階的に示した図である。FIG. 5 is a diagram showing the operation of the cap in stages when using the contents.

以下、本発明を実施するための形態を図１〜図５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、合成樹脂から形成されたものであって、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。後で詳述するが、本キャップ１は、蓋体５が連結され環状壁部１０を含む主キャップ体１１、逆止弁１２及び案内筒状体１３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.
The cap 1 according to the embodiment of the present invention is made of a synthetic resin, and is fitted into the container mouth 3 of the container 2 and has a discharge hole 25 for contents as shown in FIG. A cap body 4 and a lid body 5 connected to a main cap body 11 constituting the cap body 4 via a hinge 6 are configured. As will be described in detail later, the cap 1 is configured by assembling three constituent members: a main cap body 11 to which a lid body 5 is connected and an annular wall portion 10, a check valve 12, and a guide cylindrical body 13. .
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孔２５から外部に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。   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 from the discharge hole 25 to the outside by applying an internal pressure such as by squeezing the body portion 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.

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、截頭円錐状の下壁面を有し、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周辺の環状弁座部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。   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 extending obliquely upward toward the center, having a frustoconical lower wall surface and having a discharge hole 25 in the radial center portion, and disposed above the annular wall portion 10, and a valve portion 36. Is disengaged or seated from the annular valve seat 26 around the discharge hole 25 to open and close the discharge hole 25, and is disposed above the check valve 12, and a discharge passage for contents from the discharge hole 25 And a guide cylinder 13 having 41.

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の外壁面とを接続する環状水平壁部２０とから構成される。   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 outer wall surface of the cylindrical inner wall portion 19 are configured.

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は環状水平壁部２０と交差するように上下方向に延びている。環状水平壁部２０から下方に延びる円筒状内側壁部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。   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. The cylindrical inner wall portion 19 extends in the vertical direction so as to intersect the annular horizontal wall portion 20. An annular space 22 is formed between the cylindrical inner wall portion 19 and the cylindrical outer wall portion 18 that extend downward from the annular horizontal wall portion 20. 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。環状壁部１０の径方向中心部の吐出孔２５の内壁面は、斜め上方に向くように、すなわち後述する逆止弁１２の弁部３６の外周面（逆ハ字状の外周面）が着座できるように斜め上方に向くように形成される。この部位が環状弁座部２６として構成される。環状壁部１０の基端部の上面には、円筒状内側壁部１９の内壁面との間に間隔をおいて環状突起部２７ａが上方に突設している。これにより環状突起部２７ａと円筒状内側壁部１９の内壁面との間に環状溝部２７ｂが形成される。   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 inner wall surface of the discharge hole 25 at the central portion in the radial direction of the annular wall portion 10 faces obliquely upward. It is formed so as to face obliquely upward as possible. This portion is configured as an annular valve seat portion 26. On the upper surface of the base end portion of the annular wall portion 10, an annular protrusion portion 27 a protrudes upward with a space from the inner wall surface of the cylindrical inner wall portion 19. Thereby, an annular groove 27 b is formed between the annular protrusion 27 a and the inner wall surface of the cylindrical inner wall portion 19.

環状水平壁部２０には、円筒状内側壁部１９の外側に同心状に円筒状嵌合壁部３０が上方に向かって延びている。該円筒状嵌合壁部３０の上部外壁面には、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。該円筒状嵌合壁部３０の外壁面に蓋体５が嵌合される。環状水平壁部２０から上方に位置する円筒状内側壁部１９の高さは、円筒状嵌合壁部３０の高さよりもやや高く形成される。また、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。   In the annular horizontal wall portion 20, a cylindrical fitting wall portion 30 concentrically extends outward from the cylindrical inner wall portion 19. On the upper outer wall surface of the cylindrical fitting wall portion 30, a ridge locking portion 31 extending in an annular shape along the circumferential direction is formed. The lid 5 is fitted to the outer wall surface of the cylindrical fitting wall 30. The height of the cylindrical inner wall portion 19 located above the annular horizontal wall portion 20 is formed to be slightly higher than the height of the cylindrical fitting wall portion 30. 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３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の内壁面の周方向全域から一体的に径方向中心に向かって延びる環状弾性部３５と、該環状弾性部３５の径方向中心部に一体的に接続され、吐出孔２５を開閉する弁部３６と、環状弾性部３５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 3, 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. An annular elastic portion 35 that integrally extends from the entire circumferential direction toward the radial center, a valve portion 36 that is integrally connected to the radial central portion of the annular elastic portion 35 and opens and closes the discharge hole 25, and an annular elasticity It is provided with a plurality of flow holes 37 provided in the portion 35 and through which the contents from the discharge holes 25 flow.

円筒状支持部３４は、環状壁部１０の基端部の上面から環状水平壁部２０の上面に至る高さに形成される。該円筒状支持部３４の下端は、環状壁部１０の基端部に設けた環状突起部２７ａと円筒状内側壁部１９との間に形成された環状溝部２７ｂに嵌合される。該円筒状支持部３４の上部内壁面の周方向全域から環状弾性部３５が径方向中心に向かって延びている。該環状弾性部３５は、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。該環状弾性部３５には、周方向に等間隔で複数の流通孔３７が形成される。本実施の形態では、流通孔３７は周方向に９０°ピッチで４箇所形成される。各流通孔３７は略円形状で形成されるが、図３（ａ）の上面視においてはやや楕円形状となる。なお、本実施形態では、各流通孔３７を略円形状に形成したが、扇形状や楕円形状等他の形状を採用してもよく、その数量についても限定されることはない。また、複数の流通孔３７に代わって環状に延びる所定幅のスリット孔を採用してもよい。   The cylindrical support portion 34 is formed at a height from the upper surface of the base end portion of the annular wall portion 10 to the upper surface of the annular horizontal wall portion 20. The lower end of the cylindrical support portion 34 is fitted into an annular groove portion 27 b formed between the annular protrusion portion 27 a provided at the proximal end portion of the annular wall portion 10 and the cylindrical inner wall portion 19. An annular elastic portion 35 extends from the entire circumferential area of the upper inner wall surface of the cylindrical support portion 34 toward the radial center. The annular elastic portion 35 extends slightly curved toward the center in the radial direction and obliquely downward. A plurality of flow holes 37 are formed in the annular elastic portion 35 at equal intervals in the circumferential direction. In the present embodiment, the circulation holes 37 are formed at four positions with a 90 ° pitch in the circumferential direction. Each flow hole 37 is formed in a substantially circular shape, but has a slightly elliptical shape in a top view of FIG. In addition, in this embodiment, although each circulation hole 37 was formed in the substantially circular shape, other shapes, such as a fan shape and an ellipse shape, may be employ | adopted and the quantity is not limited. Further, instead of the plurality of flow holes 37, a slit hole having a predetermined width extending annularly may be employed.

また、環状弾性部３５の径方向中心部には、弁部３６が一体的に接続される。詳しくは、環状弾性部３５の内周壁部が弁部３６の外周面の上縁に一体的に接続される。該弁部３６は、図３（ａ）、（ｂ）に示すように、いわゆるドーム状を呈している。また、弁部３６の外周面は、環状弁座部２６に着座するように逆ハ字状に形成される。該弁部３６の上壁面には球状凸部３８が突設される。なお、逆止弁１２を本キャップ１として組み付ける前の状態（図３（ｂ）の状態）では、弁部３６の下端と円筒状支持部３４の下端とが略同一平面上に位置する。なお、本実施形態では、逆止弁１２を本キャップ１として組み付ける前の状態にて、弁部３６の下端が円筒状支持部３４の下端と同一平面上に位置しているが、図１の状態、すなわち逆止弁１２を本キャップ１として組み付けた後、環状弾性部３５自体の下向きの付勢力（復元力）により、逆止弁１２の弁部３６の外周面が環状壁部１０の吐出孔２５周辺の環状弁座部２６に隙間なく密着して押圧できれば、必ずしも、組み付け前にて、弁部３６の下端が円筒状支持部３４の下端と同一平面上に位置する必要はない。 Further, the valve portion 36 is integrally connected to the center portion in the radial direction of the annular elastic portion 35. Specifically, the inner peripheral wall portion of the annular elastic portion 35 is integrally connected to the upper edge of the outer peripheral surface of the valve portion 36. Valve 36, FIG. 3 (a), and has a so shown, the so-called domed (b). Further, the outer peripheral surface of the valve portion 36 is formed in an inverted C shape so as to be seated on the annular valve seat portion 26. Spherical convex portion 38 is projected from the upper wall surface of the valve portion 36. In the state before the check valve 12 is assembled as the main cap 1 (the state shown in FIG. 3B), the lower end of the valve portion 36 and the lower end of the cylindrical support portion 34 are positioned on substantially the same plane. In the present embodiment, the lower end of the valve portion 36 is located on the same plane as the lower end of the cylindrical support portion 34 in a state before the check valve 12 is assembled as the main cap 1. After the check valve 12 is assembled as the main cap 1, the outer peripheral surface of the valve portion 36 of the check valve 12 is discharged from the annular wall portion 10 by the downward biasing force (restoring force) of the annular elastic portion 35 itself. If the annular valve seat portion 26 around the hole 25 can be pressed closely without any gap, the lower end of the valve portion 36 does not necessarily have to be on the same plane as the lower end of the cylindrical support portion 34 before assembly.

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。   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.

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は、主キャップ体１１の、環状水平壁部２０から上方の円筒状内側壁部１９の高さと同じ高さを有している。案内筒状体１３の円筒状支持部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。案内筒状体１３の円筒状支持部４０の厚みと、逆止弁１２の円筒状支持部３４の厚みとは略同一である。円筒状案内部４２は、その基端部側に設けられ、基端に向かって拡径する拡径円筒部４２ａと、その先端部側に設けられる同一径円筒部４２ｂとが一体的に接続されて構成される。この拡径円筒部４２ａの下端に環状水平壁部４３が一体的に接続される。なお、拡径円筒部４２ａ内の吐出通路４１で最も大きい内径寸法が、逆止弁１２の吐出孔２５の内径寸法に略一致する。   The cylindrical support portion 40 is disposed above the cylindrical support portion 34 constituting the check valve 12. The cylindrical support portion 40 has the same height as the cylindrical inner wall portion 19 above the annular horizontal wall portion 20 of the main cap body 11. An annular protrusion 44 extending in the circumferential direction is formed on the outer wall surface of the cylindrical support portion 40 of the guide cylindrical body 13. The thickness of the cylindrical support portion 40 of the guide cylindrical body 13 and the thickness of the cylindrical support portion 34 of the check valve 12 are substantially the same. The cylindrical guide portion 42 is provided on the base end side thereof, and an enlarged diameter cylindrical portion 42a that increases in diameter toward the base end and a cylindrical portion 42b of the same diameter provided on the tip end side are integrally connected. Configured. An annular horizontal wall 43 is integrally connected to the lower end of the enlarged diameter cylindrical portion 42a. Note that the largest inner diameter dimension of the discharge passage 41 in the enlarged diameter cylindrical portion 42 a substantially matches the inner diameter dimension of the discharge hole 25 of the check valve 12.

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。   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 into the upper end of the cylindrical guide portion 42 of the guide cylindrical body 13 that forms the cap body 4 is formed in the central 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.

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、逆止弁１２の円筒状支持部３４の下端を、環状壁部１０に設けた環状突起部２７ａと円筒状内側壁部１９との間の環状溝部２７ｂに嵌合させると共に、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に嵌合して組み付ける。この結果、逆止弁１２の弁部３６の外周面が、環状壁部１０の吐出孔２５周辺の環状弁座部２６に密着して、且つ前記環状弁座部の下端縁と、前記弁部の外周面の下端縁とが一致するようになり、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の下端が円筒状支持部３４の下端よりも上方に位置するために、環状弾性部３５の下向きの付勢力（復元力）により、逆止弁１２の弁部３６の外周面が環状壁部１０の吐出孔２５周辺の環状弁座部２６に隙間なく密着して押圧するようになる。また、逆止弁１２の弁部３６の直上に、案内筒状体１３の円筒状案内部４２が位置して、案内筒状体１３の環状水平壁部４３の上面と、主キャップ体１１の円筒状内側壁部１９の上面とが一致する。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 lower end of the cylindrical support portion 34 of the check valve 12 is fitted into an annular groove portion 27b between the annular protrusion portion 27a provided on the annular wall portion 10 and the cylindrical inner wall portion 19, and a guide tube shape The annular protrusion 44 provided on the outer wall surface of the cylindrical support portion 40 of the body 13 is fitted and assembled to the annular fitting recess 23 provided on the inner wall surface of the cylindrical inner wall portion 19 of the main cap body 11. As a result, the outer peripheral surface of the valve portion 36 of the check valve 12 is in close contact with the annular valve seat portion 26 around the discharge hole 25 of the annular wall portion 10, and the lower end edge of the annular valve seat portion and the valve portion The lower end edge of the outer peripheral surface of the valve portion 36 coincides with the entire lower wall surface of the valve portion 36 so as to face the container mouth portion 3. Further, since the lower end of the valve portion 36 of the check valve 12 is located above the lower end of the cylindrical support portion 34, the downward elastic force (restoring force) of the annular elastic portion 35 causes the valve of the check valve 12. The outer peripheral surface of the portion 36 comes into close contact with and presses against the annular valve seat portion 26 around the discharge hole 25 of the annular wall portion 10. Further, the cylindrical guide portion 42 of the guide cylindrical body 13 is located immediately above the valve portion 36 of the check valve 12, and the upper surface of the annular horizontal wall portion 43 of the guide cylindrical body 13 and the main cap body 11. The upper surface of the cylindrical inner wall portion 19 coincides with the upper surface. Thereby, the assembly of the cap body 4 is completed.

なお、本実施形態では、逆止弁１２の位置決めのために、逆止弁１２の円筒状支持部３４の下端を嵌合させるべく、環状壁部１０に環状突起部２７ａを形成して、該環状突起部２７ａと円筒状内側壁部１９との間に環状溝部２７ｂを形成したが、逆止弁１２を、その円筒状支持部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位置決めできれば、必ずしも、環状壁部１０に環状突起部２７ａを形成して、該環状突起部２７ａと円筒状内側壁部１９との間に環状溝部２７ｂを形成する必要はない。   In the present embodiment, for positioning the check valve 12, an annular protrusion 27a is formed on the annular wall portion 10 so as to fit the lower end of the cylindrical support portion 34 of the check valve 12. An annular groove 27 b is formed between the annular protrusion 27 a and the cylindrical inner wall 19, but the check valve 12 is formed on the cylindrical inner wall 19 of the main cap body 11 whose outer wall surface is cylindrical. If it can be positioned along the inner wall surface, it is not necessary to form the annular protrusion 27a on the annular wall portion 10 and to form the annular groove 27b between the annular protrusion 27a and the cylindrical inner wall portion 19. Absent.

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の同一径円筒部４２ｂ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 protrusion locking part 53 provided on the body part 50 of the lid 5 is engaged so as to get over the protrusion locking part 31 provided on the cylindrical fitting wall part 30 of the cap body 4, and the lid A cylindrical contact portion 52 provided on the top surface portion 51 of the body 5 is tightly fitted inside the upper end of the same diameter cylindrical portion 42 b 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、しかも、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 is suspended from the lower surface of the annular horizontal wall portion 20 of the main cap body 11. The lower end of the annular seal 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５（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、使用者が容器２の胴部２ａを圧搾して容器２に内圧を加える。すると、図５（ｂ）に示すように、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の環状弾性部３５が、その基部や隣接する流通孔３７間の最も距離が短い壁部（図３の符号Ｄ１で示す壁部（２点鎖線））等を境に上方に向かって屈曲するように弾性変形して、弁部３６の外周部が環状壁部１０の吐出孔２５周辺の環状弁座部２６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から環状壁部１０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。この時、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ために、逆止弁１２の弁部３６がスムーズに上方に移動して吐出孔２５が開放される。しかも、キャップ本体４の環状壁部１０は、円筒状内側壁部１９の内壁面から径方向中心に向かって斜め上方に延びているので、内容物が環状壁部１０の截頭円錐状の下壁面に沿って吐出孔２５の方向に容易に流動するようになる。 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. 5A, the lid 5 is opened to expose the guide cylindrical body 13 of the cap body 4 to the outside.
Next, the user squeezes the body 2 a of the container 2 to apply internal pressure to the container 2. Then, as shown in FIG. 5 (b), the inner pressure of the container 2 acts on the entire lower wall surface of the valve portion 36 of the check valve 12, so that the annular elastic portion 35 of the check valve 12 has its base or adjacent portion. The outer periphery of the valve portion 36 is elastically deformed so as to bend upward with the wall portion (the wall portion indicated by reference numeral D1 in FIG. The part is detached from the annular valve seat 26 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 annular wall part 10 and the discharge passage 41 of the cylindrical guide part 42 of the guide cylindrical body 13. At this time, since the internal pressure of the container 2 acts on the entire lower wall surface of the valve portion 36 of the check valve 12, the valve portion 36 of the check valve 12 moves smoothly upward and the discharge hole 25 is opened. In addition, since the annular wall portion 10 of the cap body 4 extends obliquely upward from the inner wall surface of the cylindrical inner wall portion 19 toward the center in the radial direction, the contents are below the frustoconical shape of the annular wall portion 10. It easily flows in the direction of the discharge hole 25 along the wall surface.

その後、内容物を使用した後容器２の胴部２ａへの圧搾を止めると、容器２への内圧が解除されるために、図５（ｃ）に示すように、逆止弁１２の環状弾性部３５が復元して、弁部３６が環状壁部１０の吐出孔２５周辺の環状弁座部２６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。この時、逆止弁１２の弁部３６は、環状弾性部３５の付勢力により環状弁座部２６を押圧するように付勢される。この結果、使用直後、使用者が手でキャップ１を操作することなく迅速に容器２内を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。   Thereafter, when the squeezing to the body 2a of the container 2 is stopped after the contents are used, the internal pressure to the container 2 is released. Therefore, as shown in FIG. The portion 35 is restored, the valve portion 36 is seated on the annular valve seat portion 26 around the discharge hole 25 of the annular wall portion 10, and the discharge hole 25 of the annular wall portion 10 is closed by the valve portion 36. At this time, the valve portion 36 of the check valve 12 is urged so as to press the annular valve seat portion 26 by the urging force of the annular elastic portion 35. As a result, immediately after use, the container 2 can be quickly sealed without the user manually operating the cap 1, and the inflow of air into the container 2 can be suppressed.

次に、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の同一径円筒部４２ｂの上端内部に緊密に嵌合される。この結果、キャップ本体４の案内筒状体１３内の吐出通路４１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。   Next, when the hinge 6 is bent to cover the lid 5 so as to cover the cap body 4 from above, the protrusion locking portion 53 provided on the body portion 50 of the lid 5 is formed in the cylindrical shape of the cap body 4. While engaging so as to get over the protrusion locking portion 31 provided on the fitting wall portion 30, the cylindrical contact portion 52 provided on the top surface portion 51 of the lid 5 causes the guide tubular body 13 of the cap body 4 to be engaged. The cylindrical guide part 42 to be configured is closely fitted inside the upper end of the same diameter cylindrical part 42b. As a result, foreign matter can be prevented from entering the discharge passage 41 in the guide cylindrical body 13 of the cap body 4 and the inside of the container 2 can be double sealed.

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、特に、キャップ本体４は、容器口部３の内壁面に嵌合される円筒状内側壁部１９を有する主キャップ体１１と、該円筒状内側壁部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、截頭円錐状の下壁面を有し、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周辺の環状弁座部２６から離脱または着座して該吐出孔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とを備えて構成される。これにより、内容物の使用時には、容器２の胴部２ａを圧搾して容器２に内圧を加えれば、容器２の内圧により、逆止弁１２が弾性変形して、弁部３６の外周面が環状壁部１０の吐出孔２５周辺の環状弁座部２６から離脱されて吐出孔２５が開放され、適量の内容物が容器口部３から吐出孔２５を経由して外部に吐出される。しかも、本キャップ１では、キャップ本体４の環状壁部１０が円筒状内側壁部１９の内壁面から径方向中心に向かって斜め上方に延びているために、使用時、内容物を環状壁部１０の截頭円錐状の下壁面に沿って吐出孔２５の方向に容易に流動させることが可能になり、使用時における内容物の吐出をスムーズなものにすることができる。一方、容器２への内圧が解除されると、逆止弁１２の弁部３６が環状壁部１０の吐出孔２５周辺の環状弁座部２６に着座することで環状壁部１０の吐出孔２５が閉塞されるために、使用者が手で操作することなく、容器２内を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。   As described above, in the cap 1 according to the embodiment of the present invention, in particular, the cap body 4 includes the main cap body 11 having the cylindrical inner wall portion 19 fitted to the inner wall surface of the container mouth portion 3. An annular wall portion that extends obliquely upward integrally from the inner wall surface of the cylindrical inner wall portion 19 toward the radial center, has a truncated conical lower wall surface, and has a discharge hole 25 in the radial center portion. 10 and the check valve 12 which is disposed above the annular wall 10 and opens or closes the discharge hole 25 when the valve part 36 is separated from or seats on the annular valve seat 26 around the discharge hole 25, and the check It is provided with the guide cylindrical body 13 which is disposed above the valve 12 and has a discharge passage 41 for the contents from the discharge hole 25. Thus, when the contents are used, if the body 2a of the container 2 is squeezed and an internal pressure is applied to the container 2, the check valve 12 is elastically deformed by the internal pressure of the container 2, and the outer peripheral surface of the valve 36 is The discharge hole 25 is opened by being separated from the annular valve seat 26 around the discharge hole 25 of the annular wall 10, and an appropriate amount of content is discharged from the container port 3 through the discharge hole 25 to the outside. Moreover, in the present cap 1, the annular wall portion 10 of the cap body 4 extends obliquely upward from the inner wall surface of the cylindrical inner wall portion 19 toward the center in the radial direction. It is possible to easily flow in the direction of the discharge hole 25 along the lower wall surface of the ten truncated cone, and the discharge of the contents during use can be made smooth. On the other hand, when the internal pressure to the container 2 is released, the valve portion 36 of the check valve 12 is seated on the annular valve seat portion 26 around the discharge hole 25 of the annular wall portion 10, whereby the discharge hole 25 of the annular wall portion 10. Therefore, the inside of the container 2 can be sealed without the user's operation by hand, and the inflow of air into the container 2 can be suppressed.

また、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に被冠される蓋体５を備え、該蓋体５には、キャップ本体４に備えた案内筒状体１３の上端内部に緊密に嵌合する円筒状密着部５２が形成されるので、内容物の使用後、キャップ本体４に蓋体５を被せることで、キャップ本体４の案内筒状体１３内の吐出通路４１への異物の混入を防ぐと共に、容器２内を二重で閉塞するために、容器２内の密封状態を確実にすることができる。   Further, the cap 1 according to the embodiment of the present invention includes a lid body 5 to be crowned by the cap body 4, and the lid body 5 is provided inside the upper end of the guide cylindrical body 13 provided in the cap body 4. Since the tightly fitting cylindrical contact portion 52 is formed, the cap body 4 is covered with the lid body 5 after use of the contents, so that the discharge passage 41 in the guide cylindrical body 13 of the cap body 4 is connected to the discharge passage 41. In addition to preventing the entry of foreign substances and closing the inside of the container 2 in a double manner, the sealed state in the container 2 can be ensured.

さらに、本発明の実施の形態に係るキャップ１は、キャップ本体４を組み立てる際、環状壁部１０上の空間２４に上方から逆止弁１２を配置して、その後、該逆止弁１２上に上方から案内筒状体１３を組み込んで構成する。これにより、キャップ本体４の組立時、構成部材を上下に反転させる等の作業が必要ないので、組立工程の作業性を向上させることができる。   Furthermore, when assembling the cap body 4, the cap 1 according to the embodiment of the present invention arranges the check valve 12 from above in the space 24 on the annular wall portion 10, and then on the check valve 12. The guide cylindrical body 13 is assembled from above. Thereby, when the cap body 4 is assembled, work such as reversing the constituent members up and down is not necessary, so that workability of the assembly process can be improved.

さらにまた、本発明の実施の形態に係るキャップ１では、上方へ向かう凸状の湾曲壁部で形成された弁部３６の下壁面と環状壁部１０の下壁面とが連続するように構成されているので、容器２に内圧を加えた際、その内圧を弁部３６の下壁面全域に作用させることができ、弁部３６をスムーズに環状壁部１０の吐出孔２５周辺の環状弁座部２６から離脱させることができる。   Furthermore, the cap 1 according to the embodiment of the present invention is configured such that the lower wall surface of the valve portion 36 and the lower wall surface of the annular wall portion 10, which are formed by upwardly protruding curved wall portions, are continuous. Therefore, when an internal pressure is applied to the container 2, the internal pressure can be applied to the entire lower wall surface of the valve portion 36, and the valve portion 36 can be smoothly moved around the discharge hole 25 of the annular wall portion 10. 26 can be detached.

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，１１ 主キャップ体，１２ 逆止弁，１３ 案内筒状体，１９ 円筒状内側壁部（筒状壁部），２４ 空間，２５ 吐出孔，３４ 円筒状支持部，３５ 環状弾性部，３６ 弁部，３７ 流通孔，４０ 円筒状支持部，４１ 吐出通路   DESCRIPTION OF SYMBOLS 1 Cap, 2 Container, 3 Container mouth part, 4 Cap main body, 5 Lid body, 6 Hinge, 10 Annular wall part, 11 Main cap body, 12 Check valve, 13 Guide cylindrical body, 19 Cylindrical inner wall part ( (Cylindrical wall portion), 24 space, 25 discharge hole, 34 cylindrical support portion, 35 annular elastic portion, 36 valve portion, 37 flow hole, 40 cylindrical support portion, 41 discharge passage

Claims (3)

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、
前記容器口部の内壁面に嵌合される筒状壁部と、
該筒状壁部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、截頭円錐状の下壁面を有し、径方向中央部に吐出孔を有する環状壁部と、
該環状壁部の上方に配置され、ドーム状に形成された弁部の倒立円錐状の外周面全域が前記吐出孔周辺の倒立円錐状に延びる環状弁座部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、
該逆止弁の上方に配置され、前記吐出孔からの内容物の吐出通路を有する案内筒状体と、を備え、
前記弁部の外周面が前記環状弁座部に着座した際、前記環状弁座部の下端縁と、前記弁部の外周面の下端縁とが一致す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
A cylindrical wall portion fitted to the inner wall surface of the container mouth portion;
An annular wall portion extending obliquely upward integrally from the inner wall surface of the cylindrical wall portion toward the radial center, having a frustoconical lower wall surface, and having a discharge hole in the radial center portion;
The discharge hole is formed by disposing or seating the entire outer circumferential surface of the inverted conical shape of the valve portion disposed above the annular wall portion and extending in an inverted conical shape around the discharge hole. An elastically deformable check valve that opens and closes,
A guide tubular body disposed above the check valve and having a discharge passage for contents from the discharge hole,
When the outer peripheral surface of the valve portion is seated on the annular valve seat portion, a cap, characterized in that the lower edge of said annular valve seat portion, and the lower edge of the outer peripheral surface of the valve portion are the same. 前記キャップ本体は、前記筒状壁部と前記環状壁部とで構成する上方を開放した空間内に前記逆止弁が配置され、さらに、該逆止弁上に前記案内筒状体が配置されることを特徴とする請求項１に記載のキャップ。   In the cap body, the check valve is disposed in an open space formed by the cylindrical wall portion and the annular wall portion, and the guide tubular body is disposed on the check valve. The cap according to claim 1, wherein: 前記逆止弁は、
前記筒状壁部の内壁面に当接する筒状支持部と、
該筒状支持部の内壁面の周方向全域から一体的に径方向中心に向かって延びる環状弾性部と、
該環状弾性部の径方向中心部に一体的に設けられ、前記吐出孔を開閉する前記弁部と、
前記環状弾性部に設けられ、前記吐出孔からの内容物が流通する流通孔と、を備え、
前記環状弾性部の付勢力により、前記弁部の外周部が前記環状弁座部に押圧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 check valve is
A cylindrical support portion that contacts the inner wall surface of the cylindrical wall portion;
An annular elastic portion integrally extending from the entire circumferential direction of the inner wall surface of the cylindrical support portion toward the radial center;
The valve portion that is integrally provided in the radial center of the annular elastic portion and opens and closes the discharge hole;
A circulation hole provided in the annular elastic portion, through which the contents from the discharge hole circulate,
The cap according to claim 1 or 2, wherein an outer peripheral portion of the valve portion is pressed against the annular valve seat portion by an urging force of the annular elastic portion.
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KR1020187033193A KR102110129B1 (en) 2014-05-14 2014-10-10 Cap
KR1020167032225A KR102183292B1 (en) 2014-05-14 2014-10-10 Cap
CN201480078835.7A CN106573709B (en) 2014-05-14 2014-10-10 Bottle cap
EP14891667.9A EP3144243B1 (en) 2014-05-14 2014-10-10 Cap
PCT/JP2014/077229 WO2015173979A1 (en) 2014-05-14 2014-10-10 Cap
US14/408,832 US9637282B2 (en) 2014-05-14 2014-10-10 Cap

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