JP2019026378A - cap - Google Patents

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JP2019026378A
JP2019026378A JP2017150851A JP2017150851A JP2019026378A JP 2019026378 A JP2019026378 A JP 2019026378A JP 2017150851 A JP2017150851 A JP 2017150851A JP 2017150851 A JP2017150851 A JP 2017150851A JP 2019026378 A JP2019026378 A JP 2019026378A
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cap
communication hole
valve
contents
wall surface
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JP6899582B2 (en
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孝陽 崎村
Takaaki Sakimura
孝陽 崎村
佐々木　昌
Akira Sasaki
昌 佐々木
植平　庄治
Shoji Uehira
庄治 植平
悟 市川
Satoru Ichikawa
悟 市川
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Tokyo Light Industry Co Ltd
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Abstract

To provide a cap capable of discharging an appropriate amount of contents by limiting a flow rate of contents when discharging the contents.SOLUTION: A cap main body 4 includes a communication hole 47 for communicating a discharge hole 65 with a container mouth portion 3 and an elastically deformable check valve 21 for opening/closing the communication hole 47, the check valve 21 includes a valve portion 53 which moves along an axial direction of the container mouth portion 3 for opening/closing the communication hole 47 and a vertically provided cylindrical portion 98 which is integrally provided from the valve portion 53 and inserted into the communication hole 47, and a throttle channel 100 for throttling a flow rate of the contents from the container mouth portion 3 is formed between the vertically provided cylindrical portion 98 and the communication hole 47. Thereby, the contents of an appropriate amount intended by a user can be discharged to outside at the time of discharging the contents, as the flow rate of contents is throttled when the contents going from the container mouth portion 3 to the communication hole 47 pass through the throttle channel 100.SELECTED DRAWING: Figure 1

Description

本発明は、合成樹脂で成形されたキャップであって、特に、醤油等の液状の内容物、またはドレッシング等の粘性を有する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 particularly to a cap mounted on a container mouth portion of a container filled with a liquid content such as soy sauce or a viscous content such as dressing. It is.

容器口部に装着されるキャップにおいて、内容物の吐出後、容器口部を迅速に閉塞することが困難であると、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おいては、容器の胴部を圧搾して容器に内圧を加え、適量の内容物を吐出させた直後、使用者が手でキャップを操作することなく、迅速に容器口部、または容器口部に連通する流路を閉塞するものが要求されている。   When it is difficult to quickly close the container mouth after discharging the contents in the cap attached to the container mouth, air or fungi enter the container and the contents oxidize or grow mold There was a problem of causing deterioration and accelerating deterioration. In order to solve this, in the cap attached to the container mouth, the user operates the cap by hand immediately after squeezing the body of the container to apply internal pressure to the container and discharging an appropriate amount of contents. Therefore, there is a need for a container that quickly closes the container mouth or the channel communicating with the container mouth.

そして、上述した要求に応じるために特許文献１に係るキャップが提案されている。当該特許文献１に係るキャップに備えたキャップ本体では、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、を備えている。   And the cap which concerns on patent document 1 is proposed in order to meet the request | requirement mentioned above. In the cap main body provided in the cap according to Patent Document 1, a cylindrical wall portion fitted to the inner wall surface of the container mouth portion, and an obliquely inclined toward the radial center integrally from the inner wall surface of the cylindrical wall portion An annular wall portion extending upward, having a truncated conical lower wall surface and having a discharge hole at the center in the radial direction, and an inverted cone of a valve portion disposed above the annular wall portion and formed in a dome shape An elastically deformable check valve that opens or closes the discharge hole by separating or seating from the annular valve seat extending in an inverted conical shape around the discharge hole, and an upper surface of the check valve. And a guide cylindrical body having a discharge passage for the contents from the discharge hole.

特許第５９５９５７０号公報Japanese Patent No. 5959570

しかしながら、特許文献１に係るキャップでは、内容物の吐出時においては、逆止弁が大きく弾性変形することで、吐出孔が開放されて内容物が外部に吐出されるが、そのとき、逆止弁の弾性変形量（弁部の移動量）に応じて、内容物が使用者の意図する量よりも多い量吐出されることがあり、改善する必要があった。   However, in the cap according to Patent Document 1, when the contents are discharged, the check valve is greatly elastically deformed to open the discharge hole and discharge the contents to the outside. Depending on the amount of elastic deformation of the valve (the amount of movement of the valve portion), the contents may be discharged in an amount larger than the amount intended by the user, which has to be improved.

本発明は、かかる点に鑑みてなされたものであり、内容物を吐出させる時、内容物の流量を制限することによって適宜量の内容物を吐出させ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 points, and an object of the present invention is to provide a cap capable of discharging an appropriate amount of contents by limiting the flow rate of the contents when discharging the contents. And

（発明の態様）
以下に示す発明の態様は、本発明の構成を例示するものであり、本発明の多様な構成の理解を容易にするために、項分けして説明するものである。各項は、本発明の技術的範囲を限定するものではなく、発明を実施するための最良の形態を参酌しつつ、各項の構成要素の一部を置換し、削除し、又は、更に他の構成要素を付加したものについても、本願発明の技術的範囲に含まれるものである。 (Aspect of the Invention)
The following aspects of the invention exemplify the configuration of the present invention, and will be described in sections to facilitate understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added are also included in the technical scope of the present invention.

（１）容器口部に嵌合され、吐出孔を有するキャップ本体と、該キャップ本体に被冠される蓋体とを備えた、合成樹脂製のキャップであって、
前記キャップ本体は、前記吐出孔と前記容器口部とを連通する連通孔と、該連通孔を開閉する逆止弁と、を備え、
該逆止弁は、前記容器口部の軸方向に沿って移動して、前記連通孔を開閉する弁部と、該弁部から一体的に垂設され、前記連通孔内に挿通する筒状垂設部と、を備え、該筒状垂設部と前記連通孔との間に、前記容器口部から前記連通孔に向かう内容物の流量を絞る絞り流路が形成されることを特徴とするキャップ（請求項１の発明に相当）。
（１）項に記載のキャップでは、内容物の吐出時には、容器の胴部を圧搾して容器に内圧を加えると、容器の内圧により逆止弁が弾性変形して、すなわち、弁部が軸方向に沿って連通孔から離脱する方向に移動することで連通孔が開放される。そして、容器口部から連通孔に向かう内容物は、筒状垂設部と連通孔との間に設けた絞り流路を通過することで、その流量が絞られて、連通孔（弁部と連通孔周辺の環状弁座との間）を経由して吐出孔から吐出される。なお、このキャップでは、絞り流路の流路面積を、弁部が上限位置に到達した際の、弁部と連通孔周辺の環状弁座との間の流路面積よりも小さく設定する必要がある。 (1) A cap made of synthetic resin, including a cap body fitted into the container mouth and having a discharge hole, and a lid body to be crowned by the cap body,
The cap body includes a communication hole that communicates the discharge hole and the container opening, and a check valve that opens and closes the communication hole.
The check valve moves along the axial direction of the container mouth, opens and closes the communication hole, and a tubular shape that is integrally suspended from the valve and inserted into the communication hole. A throttle channel that restricts the flow rate of the contents from the container mouth to the communication hole is formed between the cylindrical suspension unit and the communication hole. Cap (corresponding to the invention of claim 1).
In the cap described in the item (1), when the contents are discharged, when the body portion of the container is squeezed and an internal pressure is applied to the container, the check valve is elastically deformed by the internal pressure of the container, that is, the valve portion is pivoted. The communication hole is opened by moving in the direction away from the communication hole along the direction. And the content which goes to a communicating hole from a container mouth part passes through the restricting channel provided between the cylindrical hanging part and the communicating hole, the flow volume is restrict | squeezed, and a communicating hole (valve part and It is discharged from the discharge hole via an annular valve seat around the communication hole. In this cap, the flow passage area of the throttle flow passage must be set smaller than the flow passage area between the valve portion and the annular valve seat around the communication hole when the valve portion reaches the upper limit position. is there.

（２）（１）項に記載のキャップであって、前記絞り流路の流路面積は、前記吐出孔の流路面積よりも小さいことを特徴とするキャップ（請求項２の発明に相当）。
（３）（１）項または（２）項に記載のキャップであって、前記絞り流路は、前記弁部が軸方向に沿って移動している間、その流路面積が変化しないことを特徴とするキャップ。
（２）項及び（３）項に記載のキャップでは、内容物が吐出孔から外部に吐出される前段階において、絞り流路により、容器口部からの内容物の流量を絞ることができる。言い換えれば、（２）項及び（３）項に記載のキャップでは、吐出孔の流路面積だけを小さくして、内容物の吐出量を吐出孔にて絞ると、内容物の流速が大きくなり、内容物が勢い良く出過ぎて、所望の場所、すなわち狙った場所に出し難い、という問題を解消することができる。 (2) The cap according to (1), wherein the flow passage area of the throttle flow passage is smaller than the flow passage area of the discharge hole (corresponding to the invention of claim 2). .
(3) The cap according to (1) or (2), wherein the throttle channel has a channel area that does not change while the valve portion moves in the axial direction. Characteristic cap.
In the cap described in the items (2) and (3), the flow rate of the content from the container mouth portion can be reduced by the throttle channel before the content is discharged from the discharge hole to the outside. In other words, in the caps described in the items (2) and (3), if only the flow area of the discharge hole is reduced and the discharge amount of the content is reduced by the discharge hole, the flow rate of the content increases. , It is possible to solve the problem that the contents are excessively ejected and are difficult to put out at a desired place, that is, a target place.

（４）（２）項または（３）項に記載のキャップであって、前記絞り流路の流路面積の、前記吐出孔の流路面積に対する比率は、１／２よりも小さいことを特徴とするキャップ。
（４）項に記載のキャップでは、内容物を吐出させる時、使用者の意図する適宜量の内容物を確実に吐出させることができる。 (4) The cap according to (2) or (3), wherein the ratio of the flow passage area of the throttle flow passage to the flow passage area of the discharge hole is smaller than ½. And cap.
In the cap described in the item (4), when the contents are discharged, an appropriate amount of the contents intended by the user can be discharged reliably.

（５）（１）項乃至（４）項のいずれかに記載のキャップであって、前記逆止弁は、前記弁部の外周全域から連続して径方向外方に延び、前記弁部を、前記連通孔を閉塞する方向に付勢する環状弾性部を備え、該環状弾性部に、前記連通孔からの内容物の流量を絞るオリフィスを設けることを特徴とするキャップ（請求項３の発明に相当）。
（５）項に記載のキャップでは、内容物の吐出時には、使用者が容器の胴部を圧搾して容器に内圧を加えると、容器の内圧により逆止弁が弾性変形して、すなわち、弁部が軸方向に沿って連通孔から離脱する方向に移動することで連通孔が開放される。そして、容器口部からの内容物は、まず、弁部の筒状垂設部と連通孔との間に設けた絞り流路を通過することで、その流量が絞られて連通孔から吐出される。その後、絞り流路から連通孔を経由して吐出された内容物は、逆止弁の環状弾性部に設けたオリフィスを通過することで、その流量がさらに絞られて吐出孔から吐出される。このように、内容物が吐出孔から外部に吐出される前段階において、容器口からの内容物を２段階に亘ってその流量を絞ることができる。このキャップは、比較的粘性の低い内容物に対して有効である。なお、このキャップでは、オリフィスの流路面積を、絞り流路の流路面積よりも小さく設定する必要がある。 (5) The cap according to any one of items (1) to (4), wherein the check valve continuously extends radially outward from the entire outer periphery of the valve portion, and the valve portion is A cap having an annular elastic portion that urges the communication hole in a closing direction, and an orifice for restricting the flow rate of contents from the communication hole is provided in the annular elastic portion. Equivalent).
In the cap according to item (5), when the user discharges the contents, if the user presses the body of the container and applies internal pressure to the container, the check valve is elastically deformed by the internal pressure of the container. The communication hole is opened by the movement of the portion in the axial direction away from the communication hole. The contents from the container mouth are first discharged through the communication hole by reducing the flow rate by passing through the throttle channel provided between the cylindrical hanging part of the valve part and the communication hole. The Thereafter, the content discharged from the throttle channel via the communication hole passes through an orifice provided in the annular elastic portion of the check valve, and is further reduced in flow rate and discharged from the discharge hole. Thus, the flow rate of the content from the container port can be reduced in two stages before the content is discharged to the outside from the discharge hole. This cap is effective for contents with relatively low viscosity. In this cap, it is necessary to set the flow passage area of the orifice smaller than the flow passage area of the throttle flow passage.

（６）（５）項に記載のキャップであって、前記環状弾性部は、厚肉壁部と薄肉壁部とから構成され、前記オリフィスは前記薄肉壁部に設けられることを特徴とするキャップ（請求項４の発明に相当）。
（６）項に記載のキャップでは、環状弾性部は厚肉壁部及び薄肉壁部を混在させて構成されているので、環状弾性部が適宜の弾性力を有するようになり、逆止弁の弁部を適宜の力でスムーズに軸方向に沿って移動させることができ、一方、常時は、弁部を、連通孔を閉塞する方向に付勢することができ、容器内へのエアの流入を抑制することができる。しかも、オリフィスは薄肉壁部に設けられているので、環状弾性部が適宜の弾性力を維持することができる。また、環状弾性部の弾性力により弁部の上限位置を設定することができる。すなわち、環状弾性部が最大で弾性変形した位置、言い換えれば環状弾性部が最大伸長した位置を、弁部の上限位置とすることができる。 (6) The cap according to item (5), wherein the annular elastic portion is formed of a thick wall portion and a thin wall portion, and the orifice is provided in the thin wall portion. (Equivalent to the invention of claim 4).
In the cap described in (6), since the annular elastic portion is configured by mixing the thick wall portion and the thin wall portion, the annular elastic portion has an appropriate elastic force. The valve part can be smoothly moved along the axial direction with an appropriate force. On the other hand, normally, the valve part can be urged in the direction of closing the communication hole, and air flows into the container. Can be suppressed. Moreover, since the orifice is provided in the thin wall portion, the annular elastic portion can maintain an appropriate elastic force. Further, the upper limit position of the valve portion can be set by the elastic force of the annular elastic portion. That is, the position where the annular elastic portion is elastically deformed at the maximum, in other words, the position where the annular elastic portion is extended to the maximum can be set as the upper limit position of the valve portion.

（７）（５）項または（６）項に記載のキャップであって、前記オリフィスは、前記環状弾性部に複数形成されることを特徴とするキャップ（請求項５の発明に相当）。
（７）項に記載のキャップでは、連通孔からの内容物を、環状弾性部の各オリフィスを経由して偏りなく、吐出孔から外部に吐出させることができる。 (7) The cap according to (5) or (6), wherein a plurality of the orifices are formed in the annular elastic portion (corresponding to the invention of claim 5).
In the cap according to item (7), the contents from the communication hole can be discharged from the discharge hole to the outside through the respective orifices of the annular elastic portion without being biased.

（８）容器口部に嵌合され、吐出孔を有するキャップ本体と、該キャップ本体に被冠される蓋体とを備えた、合成樹脂製のキャップであって、
前記キャップ本体は、前記吐出孔と前記容器口部とを連通する連通孔と、該連通孔を開閉する逆止弁と、を備え、
該逆止弁は、前記容器口部の軸方向に沿って移動して、前記連通孔を開閉する弁部と、該弁部の外周全域から連続して径方向外方に延び、前記弁部を、前記連通孔を閉塞する方向に付勢する環状弾性部と、該環状弾性部に設けられ、前記連通孔からの内容物の流量を絞るオリフィスと、を備えることを特徴とするキャップ（請求項６の発明に相当）。
（８）項に記載のキャップでは、内容物の吐出時、使用者が容器の胴部を圧搾して容器に内圧を加えると、容器の内圧により逆止弁が弾性変形して、すなわち、弁部が軸方向に沿って連通孔から離脱する方向に移動することで連通孔が開放されて、内容物が連通孔（弁部と連通孔周辺の環状弁座との間）から吐出される。そして、連通孔からの内容物は、逆止弁の環状弾性部に設けたオリフィスを通過することで、その流量が絞られて吐出孔から吐出される。なお、このキャップでは、オリフィスの流路面積を、弁部が上限位置に到達した際の、弁部と連通孔周辺の環状弁座との間の流路面積よりも小さく設定する必要がある。 (8) A synthetic resin cap that includes a cap body that is fitted to the container mouth and has a discharge hole, and a lid that is crowned by the cap body,
The cap body includes a communication hole that communicates the discharge hole and the container opening, and a check valve that opens and closes the communication hole.
The check valve moves along the axial direction of the container mouth, opens and closes the communication hole, and continuously extends radially outward from the entire outer periphery of the valve. An annular elastic portion that urges the communication hole in a closing direction, and an orifice that is provided in the annular elastic portion and restricts the flow rate of the content from the communication hole. Equivalent to the invention of item 6).
In the cap according to item (8), when the user squeezes the body of the container and applies internal pressure to the container when the contents are discharged, the check valve is elastically deformed by the internal pressure of the container. The part moves in the direction away from the communication hole along the axial direction to open the communication hole, and the contents are discharged from the communication hole (between the valve part and the annular valve seat around the communication hole). Then, the contents from the communication hole pass through an orifice provided in the annular elastic portion of the check valve so that the flow rate is reduced and discharged from the discharge hole. In this cap, it is necessary to set the flow area of the orifice to be smaller than the flow area between the valve portion and the annular valve seat around the communication hole when the valve portion reaches the upper limit position.

（９）（８）項に記載のキャップであって、前記オリフィスの流路面積は、前記吐出孔の流路面積よりも小さいことを特徴とするキャップ（請求項７の発明に相当）。
（９）項に記載のキャップでは、内容物が吐出孔から外部に吐出される前段階において、オリフィスにより、容器口部からの内容物の流量を絞ることができる。言い換えれば、（９）項に記載のキャップでは、吐出孔の流路面積だけを小さくして、内容物の吐出量を吐出孔にて絞ると、内容物の流速が大きくなり、内容物が勢い良く出過ぎて、所望の場所、すなわち狙った場所に出し難い、という問題を解消することができる。 (9) The cap according to item (8), wherein a flow area of the orifice is smaller than a flow area of the discharge hole (corresponding to the invention of claim 7).
In the cap according to the item (9), the flow rate of the content from the container mouth can be reduced by the orifice before the content is discharged to the outside from the discharge hole. In other words, in the cap described in item (9), when only the flow passage area of the discharge hole is reduced and the discharge amount of the content is reduced by the discharge hole, the flow rate of the content is increased and the content is vigorous. It is possible to solve the problem that it goes out well and it is difficult to put it out in a desired place, that is, a target place.

（１０）（９）項の記載のキャップであって、前記オリフィスの流路面積の、前記吐出孔の流路面積に対する比率は、１／２よりも小さいことを特徴とするキャップ。
（１０）項に記載のキャップでは、内容物を吐出させる時、使用者の意図する適宜量の内容物を確実に吐出させることができる。 (10) The cap according to (9), wherein the ratio of the flow area of the orifice to the flow area of the discharge hole is smaller than ½.
In the cap according to item (10), when the contents are discharged, an appropriate amount of the contents intended by the user can be discharged reliably.

本発明の第１のキャップでは、内容物の吐出時、容器口部から連通孔に向かう内容物は、筒状垂設部と連通孔との間に設けた絞り流路を通過することで、その流量が絞られて連通孔を経由して吐出孔から吐出される。
本発明の第２のキャップでは、内容物の吐出時、連通孔を通過した内容物は、環状弾性部に設けたオリフィスを通過することで、その流量が絞られて吐出孔から吐出される。
そして、本発明の第１及び第２のキャップによれば、容器口部からの内容物は、吐出孔から外部に吐出される前段階で、その流量が絞られて、言い換えれば流量が制限されて、吐出孔から外部に吐出されるので、使用者が意図する適宜量の内容物を外部に吐出させることができる。 In the first cap of the present invention, at the time of discharging the contents, the contents going from the container mouth part to the communication hole pass through the throttle channel provided between the cylindrical hanging part and the communication hole, The flow rate is reduced and discharged from the discharge hole via the communication hole.
In the second cap of the present invention, when the contents are discharged, the contents that have passed through the communication hole pass through an orifice provided in the annular elastic portion, and thereby the flow rate is reduced and discharged from the discharge hole.
Then, according to the first and second caps of the present invention, the flow rate of the contents from the container opening is reduced before being discharged from the discharge hole to the outside, in other words, the flow rate is limited. As a result, the appropriate amount of contents intended by the user can be discharged to the outside.

図１は、本発明の第１実施形態に係るキャップの断面図である。FIG. 1 is a cross-sectional view of a cap according to a first embodiment of the present invention. 図２は、容器口部の断面図である。FIG. 2 is a cross-sectional view of the container mouth portion. 図３（ａ）は、図１のキャップの構成で、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、断面図であり、（ｃ）は、下面図である。3A 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, FIG. 3B is a sectional view, and FIG. 3C is a bottom view. It is. 図４（ａ）は、図１のキャップの構成である逆止弁の平面図であり、（ｂ）は、（ａ）のＡ−Ａ線に沿う断面図であり、（ｃ）は、（ａ）のＢ−Ｂ線に沿う断面図である。4A is a plan view of a check valve that is a configuration of the cap of FIG. 1, FIG. 4B is a cross-sectional view taken along the line AA of FIG. 1A, and FIG. It is sectional drawing which follows the BB line of a). 図５（ａ）は、図１のキャップの構成である案内筒状体の平面図であり、（ｂ）は、断面図である。Fig.5 (a) is a top view of the guide cylindrical body which is a structure of the cap of FIG. 1, (b) is sectional drawing. 図６は、第１実施形態に係るキャップであって、内容物を使用する際の作用を段階的に示した図である。Drawing 6 is a cap concerning a 1st embodiment, and is a figure showing the operation at the time of using the contents in steps. 図７は、図６（ｂ）のＣ部拡大図である。FIG. 7 is an enlarged view of part C in FIG. 図８は、本発明の第２実施形態に係るキャップ（蓋体を除く）の断面図である。FIG. 8 is a cross-sectional view of a cap (excluding a lid) according to the second embodiment of the present invention. 図９（ａ）は、図８のキャップの構成である逆止弁の平面図であり、（ｂ）は、（ａ）のＡ−Ａ線に沿う断面図であり、（ｃ）は、（ａ）のＢ−Ｂ線に沿う断面図である。9A is a plan view of a check valve that is a configuration of the cap of FIG. 8, FIG. 9B is a cross-sectional view taken along line AA of FIG. 9A, and FIG. It is sectional drawing which follows the BB line of a). 図１０は、第２実施形態に係るキャップであって、内容物を使用する際の作用を段階的に示した図である。FIG. 10 is a view of the cap according to the second embodiment, showing stepwise the action when using the contents. 図１１は、本発明の第３実施形態に係るキャップ（蓋体を除く）の断面図である。FIG. 11 is a cross-sectional view of a cap (excluding a lid) according to a third embodiment of the present invention. 図１２（ａ）は、図１１のキャップの構成である案内筒状体の断面図であり、（ｂ）は、下面図である。FIG. 12A is a cross-sectional view of a guide cylindrical body that is the configuration of the cap of FIG. 11, and FIG. 12B is a bottom view. 図１３は、第３実施形態に係るキャップであって、内容物を使用する際の作用を段階的に示した図である。FIG. 13 is a view of the cap according to the third embodiment, showing the action when using the contents in stages.

以下、本発明を実施するための形態を図１〜図１３に基づいて詳細に説明する。
本発明の第１〜第３の実施形態に係るキャップ１ａ、１ｂ、１ｃは、容器２の容器口部３に嵌合されるキャップ本体４と、該キャップ本体４に被冠される蓋体５と、から構成される。これら第１〜第３実施形態に係るキャップ１ａ、１ｂ、１ｃは、合成樹脂を成形して形成される。 Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
The caps 1 a, 1 b, 1 c according to the first to third embodiments of the present invention include a cap body 4 fitted to the container mouth 3 of the container 2 and a lid body 5 to be crowned by the cap body 4. And. The caps 1a, 1b, and 1c according to the first to third embodiments are formed by molding a synthetic resin.

まず、第１実施形態に係るキャップ１ａを図１〜図６に基づいて説明する。
第１実施形態に係るキャップ１ａは、図１に示すように、容器２の容器口部３に嵌合される。容器２は、例えばチューブ状容器など変形し易いものであり、その内部には、液状の内容物や粘性を有する内容物が充填される。この内容物は、例えば、醤油、ポン酢、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１０を圧搾するなどして内圧を加えることで、内容物をキャップ１ａから吐出させるタイプのものである。なお、容器２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）を含む。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。 First, the cap 1a according to the first embodiment will be described with reference to FIGS.
The cap 1a according to the first embodiment is fitted into the container mouth portion 3 of the container 2 as shown in FIG. The container 2 is easily deformable, such as a tube-shaped container, and is filled with a liquid content or a viscous content. Examples of the contents include soy sauce, ponzu, olive oil, dressing, mayonnaise, ketchup, tonkatsu sauce, pasty mustard, and the like. The container 2 is of a type in which the contents are discharged from the cap 1a by applying an internal pressure by, for example, squeezing the body portion 10 thereof. The container 2 includes a double container (including a so-called peeling container) composed of an outer container and an inner container. 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２も参照して、容器２は、胴部１０と、胴部１０から連続して形成される容器口部３と、から構成される。容器口部３は、全体として円筒状に形成される。該容器口部３は、その胴部１０から略同じ厚みで連続して形成される。該容器口部３は、外径が相違する複数の口部（段部）が軸方向に沿って連続して構成される。具体的には、容器口部３は、上端に配置され軸方向に延びる大径口部１１と、該大径口部１１から下方に配置され、その外径が大径口部１１より小径で軸方向に延びる小径口部１２と、該小径口部１２から下方に配置され、その外径が大径口部１１より大径で軸方向に延びる最大径口部１３とを備えている。   Referring also to FIG. 2, the container 2 includes a trunk portion 10 and a container mouth portion 3 formed continuously from the trunk portion 10. The container mouth part 3 is formed in a cylindrical shape as a whole. The container mouth portion 3 is continuously formed from the trunk portion 10 with substantially the same thickness. The container mouth portion 3 is configured by a plurality of mouth portions (step portions) having different outer diameters continuously along the axial direction. Specifically, the container mouth portion 3 is disposed at the upper end and extends in the axial direction, and is disposed below the large diameter mouth portion 11, and has an outer diameter smaller than that of the large diameter mouth portion 11. A small-diameter mouth portion 12 extending in the axial direction, and a maximum-diameter mouth portion 13 disposed below the small-diameter mouth portion 12 and having an outer diameter larger than that of the large-diameter mouth portion 11 and extending in the axial direction are provided.

また、上端に位置する大径口部１１と小径口部１２とは、大径口部１１から連続して下方に向かって次第に縮径する弾性変形可能な縮径口部１４により接続される。小径口部１２と最大径口部１３とは、小径口部１２から連続して下方に向かって次第に拡径する弾性変形可能な拡径口部１５により接続される。最大径口部１３の下方には、連続して、最大径口部１３より小径で、大径口部１１より大径の、軸方向に延びる支持口部１６が形成される。支持口部１６と胴部１０との間には、小径口部１２と略同径の凹状口部１７が形成される。なお、容器口部３にキャップ１ａを打栓する際、凹状口部１７の外周部位が、打栓機（図示略）にて把持される。   Further, the large-diameter mouth portion 11 and the small-diameter mouth portion 12 located at the upper end are connected by an elastically deformable reduced-diameter mouth portion 14 that continuously decreases from the large-diameter mouth portion 11 toward the lower side. The small-diameter mouth portion 12 and the maximum-diameter mouth portion 13 are connected by an elastically deformable large-diameter mouth portion 15 that continuously expands from the small-diameter mouth portion 12 and gradually expands downward. A support port portion 16 extending in the axial direction and having a diameter smaller than that of the maximum diameter port portion 13 and larger than that of the large diameter port portion 11 is continuously formed below the maximum diameter port portion 13. Between the support opening 16 and the body 10, a concave opening 17 having the same diameter as the small diameter opening 12 is formed. When the cap 1a is plugged into the container mouth portion 3, the outer peripheral portion of the concave mouth portion 17 is gripped by a stoppering machine (not shown).

図１に示すように、第１実施形態に係るキャップ１ａは、容器２の胴部１０を圧搾して容器２に内圧を加え、適量の内容物を吐出した直後、使用者が手でキャップ１ａを操作することなく、容器２内を逆止弁２１により密封できるものである。第１実施形態に係るキャップ１ａは、容器口部３と案内筒状体２２の吐出孔６５とを連通する連通孔４７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２０にヒンジ６を介して一体的に連結され、キャップ本体４に被冠される蓋体５と、から構成される。後で詳述するが、本キャップ１ａは、図３に示す、蓋体５を含む主キャップ体２０と、図４に示す逆止弁２１と、図５に示す案内筒状体２２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により主キャップ体２０（キャップ本体４）に一体的に連結せずに、蓋体５と主キャップ体２０とをそれぞれ別体で構成してもよい。   As shown in FIG. 1, the cap 1 a according to the first embodiment is a cap 1 a that is pressed by a user's hand immediately after the body 10 of the container 2 is squeezed to apply internal pressure to the container 2 and an appropriate amount of content is discharged. The inside of the container 2 can be sealed with the check valve 21 without operating the. The cap 1a according to the first embodiment includes a cap body 4 having a communication hole 47 that allows the container opening 3 and the discharge hole 65 of the guide cylindrical body 22 to communicate with each other, and the main cap body 20 constituting the cap body 4. The lid 5 is integrally connected via the hinge 6 and is covered with the cap body 4. As will be described in detail later, the cap 1a includes a main cap body 20 including the lid 5 shown in FIG. 3, a check valve 21 shown in FIG. 4, and a guide cylindrical body 22 shown in FIG. It is constructed by assembling two components. Note that the lid body 5 and the main cap body 20 may be formed separately from each other without integrally connecting the lid body 5 to the main cap body 20 (cap body 4) by the hinge 6.

図１に示すように、キャップ本体４は、容器口部３に打栓され、円筒状主嵌合壁部２６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、径方向中央部に連通孔４７を有する環状壁部４０を含む円筒状の主キャップ体２０と、該主キャップ体２０の環状壁部４０の上方に配置され、弁部５３が連通孔４７の第２内壁面９６（環状弁座４８）から離脱または着座して連通孔４７を開閉する、弾性変形可能な逆止弁２１と、該逆止弁２１の上方に配置され、連通孔４７と連通し、連通孔４７からの内容物を外部に吐出する吐出孔６５を有する案内筒状体２２と、から構成される。逆止弁２１を成形する合成樹脂は、蓋体５を含む主キャップ体２０を成形する合成樹脂よりも高弾性となる。具体的には、逆止弁２１は、ポリエチレンやエラストマーにて成形される。蓋体５を含む主キャップ体２０は、ポリプロピレンにて成形される。案内筒状体２２は、ポリエチレンにて成形される。   As shown in FIG. 1, the cap body 4 is plugged into the container opening 3 and extends obliquely upward from the inner wall surface of the cylindrical main fitting wall portion 26 toward the radial center. A cylindrical main cap body 20 including an annular wall portion 40 having a communication hole 47 in the portion, and the valve body 53 is disposed above the annular wall portion 40 of the main cap body 20, and the valve portion 53 is a second inner wall surface of the communication hole 47. An elastically deformable check valve 21 that opens or closes the communication hole 47 by being detached from or seated on the 96 (annular valve seat 48), and is disposed above the check valve 21 and communicates with the communication hole 47. And a guide cylindrical body 22 having a discharge hole 65 for discharging the contents from 47 to the outside. The synthetic resin that forms the check valve 21 has higher elasticity than the synthetic resin that forms the main cap body 20 including the lid 5. Specifically, the check valve 21 is formed of polyethylene or elastomer. The main cap body 20 including the lid body 5 is formed of polypropylene. The guide cylindrical body 22 is formed of polyethylene.

図１及び図３に示すように、主キャップ体２０は、胴部２５と、該胴部２５の内側に同心状に配置される円筒状主嵌合壁部２６と、胴部２５の上端と円筒状主嵌合壁部２６の上端とを接続する環状水平壁部２７と、を備えている。胴部２５の下部内壁面には、突条係止部３０が形成される。円筒状主嵌合壁部２６と胴部２５との間に、容器口部３が嵌合される環状空間２８が形成される。円筒状主嵌合壁部２６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３２が形成される。環状水平壁部２７は、胴部２５よりも小径に形成され、環状水平壁部２７の上面でその外周部に、上方に突起する環状突起部３１が形成される。   As shown in FIGS. 1 and 3, the main cap body 20 includes a body portion 25, a cylindrical main fitting wall portion 26 concentrically disposed inside the body portion 25, and an upper end of the body portion 25. And an annular horizontal wall portion 27 that connects the upper end of the cylindrical main fitting wall portion 26. A protrusion locking portion 30 is formed on the lower inner wall surface of the body portion 25. An annular space 28 into which the container mouth 3 is fitted is formed between the cylindrical main fitting wall portion 26 and the trunk portion 25. On the upper inner wall surface of the cylindrical main fitting wall portion 26, an annular fitting concave portion 32 extending in an annular shape along the circumferential direction is formed. The annular horizontal wall portion 27 is formed to have a smaller diameter than the body portion 25, and an annular protrusion 31 protruding upward is formed on the outer peripheral portion of the upper surface of the annular horizontal wall portion 27.

環状突起部３１の外壁面に周方向に沿って環状に延びる突条係止部３５が形成される。該環状水平壁部２７の外壁面に蓋体５が嵌合される。環状水平壁部２７の下面で、胴部２５と円筒状主嵌合壁部２６の間の環状空間２８に向かって、胴部２５と同心状に円筒状副嵌合壁部３６が垂設される。該円筒状副嵌合壁部３６の長さは、円筒状主嵌合壁部２６の長さより相当短く形成される。円筒状副嵌合壁部３６と胴部２５との間の環状空間には、周方向に沿って間隔を置いて複数の補強リブ３７が形成される。本実施形態では、補強リブ３７は８箇所形成される。複数の補強リブ３７が形成されることにより、円筒状副嵌合壁部３６の剛性を保持することができる。   On the outer wall surface of the annular protrusion 31, a protrusion locking portion 35 that extends annularly along the circumferential direction is formed. The lid 5 is fitted to the outer wall surface of the annular horizontal wall portion 27. On the lower surface of the annular horizontal wall portion 27, a cylindrical sub-fitting wall portion 36 is provided concentrically with the trunk portion 25 toward the annular space 28 between the trunk portion 25 and the cylindrical main fitting wall portion 26. The The length of the cylindrical sub-fitting wall portion 36 is considerably shorter than the length of the cylindrical main fitting wall portion 26. A plurality of reinforcing ribs 37 are formed in the annular space between the cylindrical sub-fitting wall portion 36 and the body portion 25 at intervals along the circumferential direction. In the present embodiment, eight reinforcing ribs 37 are formed. By forming the plurality of reinforcing ribs 37, the rigidity of the cylindrical sub-fitting wall portion 36 can be maintained.

円筒状主嵌合壁部２６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４０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４０の下壁面は円錐状面に形成される。環状壁部４０の先端側の上壁面は円錐状面に形成され、該基部側の上壁面は水平面に形成される。環状壁部４０の基部における上壁面に、環状に延びる収容溝部４１が形成される。該収容溝部４１には、後述する逆止弁２１の構成である円筒状支持部５１の下端部が収容される。収容溝部４１の底部には、上下方向に貫通する流通孔４２が形成される。該流通孔４２は、周方向に沿って間隔を置いて複数形成される。流通孔４２が形成される部位において、収容溝部４１の径方向内方の対向壁面に流通溝部４５が形成される。そして、逆止弁２１の円筒状支持部５１の下端部が収容溝部４１に収容されると、円筒状支持部５１の内壁面と流通溝部４５との間に流通路４６が形成されるようになる。当該各流通路４６が、各流通孔４２に連通する。なお、本実施形態では、流通溝部４５及び流通孔４２を複数形成しているが、少なくとも、ヒンジ６側とは反対側に１箇所設けるようにしてもよい。   On the lower inner wall surface of the cylindrical main fitting wall portion 26, an annular wall portion 40 extends obliquely upward from the entire circumferential direction integrally toward the radial center. The lower wall surface of the annular wall portion 40 is formed in a conical surface. The upper wall surface on the tip side of the annular wall 40 is formed in a conical surface, and the upper wall surface on the base side is formed in a horizontal plane. An accommodation groove 41 that extends in an annular shape is formed on the upper wall surface of the base of the annular wall 40. The accommodation groove 41 accommodates a lower end portion of a cylindrical support 51 that is a configuration of a check valve 21 described later. A flow hole 42 penetrating in the vertical direction is formed at the bottom of the housing groove 41. A plurality of the flow holes 42 are formed at intervals along the circumferential direction. In a portion where the flow hole 42 is formed, a flow groove portion 45 is formed on a radially inward facing wall surface of the housing groove portion 41. Then, when the lower end portion of the cylindrical support portion 51 of the check valve 21 is accommodated in the accommodation groove portion 41, a flow passage 46 is formed between the inner wall surface of the cylindrical support portion 51 and the flow groove portion 45. Become. Each flow passage 46 communicates with each flow hole 42. In the present embodiment, a plurality of the flow grooves 45 and the flow holes 42 are formed, but at least one may be provided on the side opposite to the hinge 6 side.

環状壁部４０の径方向中心部に、略円形状の連通孔４７が形成される。該連通孔４７は容器口部３内と連通される。連通孔４７の内壁面は、容器口部３の軸方向に沿って円筒状に延びる第１内壁面９５と、該第１内壁面９５の上端から倒立円錐状（漏斗状）に延びる第２内壁面９６と、を備えている。連通孔４７の第２内壁面９６が環状弁座４８として作用する。連通孔４７の第１内壁面９５の内径は、３．０ｍｍ〜１０．０ｍｍの範囲で形成されるのが好ましい。本実施形態では、連通孔４７の第１内壁面９５の内径は、８．０ｍｍに形成される。   A substantially circular communication hole 47 is formed at the radial center of the annular wall 40. The communication hole 47 communicates with the inside of the container mouth portion 3. The inner wall surface of the communication hole 47 includes a first inner wall surface 95 extending in a cylindrical shape along the axial direction of the container mouth portion 3, and a second inner wall extending in an inverted conical shape (funnel shape) from the upper end of the first inner wall surface 95. And a wall surface 96. The second inner wall surface 96 of the communication hole 47 functions as the annular valve seat 48. The inner diameter of the first inner wall surface 95 of the communication hole 47 is preferably formed in the range of 3.0 mm to 10.0 mm. In the present embodiment, the inner diameter of the first inner wall surface 95 of the communication hole 47 is formed to 8.0 mm.

図１及び図４に示すように、逆止弁２１は、主キャップ体２０の円筒状主嵌合壁部２６の内壁面に当接する円筒状支持部５１と、該円筒状支持部５１の内壁面から一体的に延びる弾性部９０と、弾性部９０の先端に一体的に接続され、容器口部３の軸方向に沿って移動して、連通孔４７を開閉する弁部５３と、弁部５３の外壁面の下端から下方に向かって垂設される円筒状垂設部９８と、を備えている。   As shown in FIGS. 1 and 4, the check valve 21 includes a cylindrical support portion 51 that contacts the inner wall surface of the cylindrical main fitting wall portion 26 of the main cap body 20, and an inner portion of the cylindrical support portion 51. An elastic portion 90 that integrally extends from the wall surface, a valve portion 53 that is integrally connected to the tip of the elastic portion 90, moves along the axial direction of the container mouth portion 3, and opens and closes the communication hole 47; And a cylindrical hanging portion 98 that is hung downward from the lower end of the outer wall surface of 53.

円筒状支持部５１は、その外壁面が主キャップ体２０の円筒状主嵌合壁部２６の内壁面に当接する。円筒状支持部５１の下端部は、主キャップ体２０の環状壁部４０に設けた収容溝部４１に収容される。なお、円筒状支持部５１の下端部が、主キャップ体２０の環状壁部４０に設けた収容溝部４１に収容されると、上述したように、円筒状支持部５１の内壁面と収容溝部４１に設けた流通溝部４５との間に流通路４６が形成されるようになる。弾性部９０は、放射状に延びる複数の弾性片９１で構成される。隣接する弾性片９１、９１間に流通孔９２が形成される。弾性片９１は平面視略矩形状に形成される。本実施形態では、弾性片９１は周方向に９０°ピッチで４箇所形成される。流通孔９２は平面視扇状に形成される。各流通孔９２により、連通孔４７（空間８０ａ）と、案内筒状体２２の吐出孔６５（空間８０ｂ）とが連通される。流通孔９２の面積は、弾性片９１の面積に対して、相当大きく形成される。   The cylindrical support portion 51 has an outer wall surface that abuts against an inner wall surface of the cylindrical main fitting wall portion 26 of the main cap body 20. A lower end portion of the cylindrical support portion 51 is accommodated in an accommodation groove portion 41 provided in the annular wall portion 40 of the main cap body 20. In addition, when the lower end part of the cylindrical support part 51 is accommodated in the accommodation groove part 41 provided in the annular wall part 40 of the main cap body 20, as described above, the inner wall surface of the cylindrical support part 51 and the accommodation groove part 41. A flow passage 46 is formed between the flow groove portion 45 provided in the first and second flow grooves. The elastic part 90 is composed of a plurality of elastic pieces 91 extending radially. A flow hole 92 is formed between the adjacent elastic pieces 91, 91. The elastic piece 91 is formed in a substantially rectangular shape in plan view. In the present embodiment, the elastic pieces 91 are formed at four positions with a 90 ° pitch in the circumferential direction. The flow hole 92 is formed in a fan shape in plan view. The communication holes 47 (space 80a) and the discharge holes 65 (space 80b) of the guide cylindrical body 22 are communicated with each other through the flow holes 92. The area of the flow hole 92 is formed to be considerably larger than the area of the elastic piece 91.

弾性部９０（各弾性片９１）の内側の端部が弁部５３の外壁面の上縁に一体的に接続される。該弁部５３は、略同じ厚みでドーム状に形成される。弁部５３の外壁面は倒立円錐状面（漏斗状）に形成される。弁部５３は平面視円形状に形成される。弁部５３の外壁面が、連通孔４７の第２内壁面９６である環状弁座４８（倒立円錐状面）に着座する。そして、逆止弁２１を主キャップ体２０に組み付けると、弾性部９０（各弾性片９１）の下向きの付勢力（復元力）により、弁部５３の外壁面が連通孔４７の第２内壁面９６（環状弁座４８）に隙間なく密着して押圧する状態が維持される。言い換えれば、常時、弾性部９０（各弾性片９１）の下向きの付勢力により、弁部５３を、連通孔４７を閉塞する方向に付勢している。   The inner end of the elastic portion 90 (each elastic piece 91) is integrally connected to the upper edge of the outer wall surface of the valve portion 53. The valve portion 53 is formed in a dome shape with substantially the same thickness. The outer wall surface of the valve part 53 is formed in an inverted conical surface (funnel shape). The valve portion 53 is formed in a circular shape in plan view. The outer wall surface of the valve portion 53 is seated on an annular valve seat 48 (an inverted conical surface) that is the second inner wall surface 96 of the communication hole 47. When the check valve 21 is assembled to the main cap body 20, the outer wall surface of the valve portion 53 is connected to the second inner wall surface of the communication hole 47 by the downward biasing force (restoring force) of the elastic portion 90 (each elastic piece 91). 96 (annular valve seat 48) is kept in close contact with and pressed without a gap. In other words, the valve portion 53 is constantly urged in the direction of closing the communication hole 47 by the downward urging force of the elastic portion 90 (each elastic piece 91).

弁部５３は、容器口部３の軸方向に沿って移動可能であるが、弁部５３の上限位置は弾性部９０（各弾性片９１）の構成により設定されることになる。すなわち、弁部５３の上限位置は、弾性片９１の弾性力（弾性片９１が最も伸長した位置）により定まることになる。なお、弁部５３の最大移動距離は、０．５ｍｍ〜２．０ｍｍの範囲内で設定されるのが好ましい。本実施形態では、弁部５３の最大移動距離は、１．０ｍｍに設定される。また本実施形態では、弁部５３が上限位置に達した際の、弁部５３の外壁面と、連通孔４７の第２内壁面９６（環状弁座４８）との間の流路面積は、約２５ｍｍ２となる。 Although the valve part 53 can move along the axial direction of the container port part 3, the upper limit position of the valve part 53 is set by the structure of the elastic part 90 (each elastic piece 91). That is, the upper limit position of the valve portion 53 is determined by the elastic force of the elastic piece 91 (the position where the elastic piece 91 is most extended). The maximum moving distance of the valve portion 53 is preferably set within a range of 0.5 mm to 2.0 mm. In the present embodiment, the maximum moving distance of the valve portion 53 is set to 1.0 mm. In the present embodiment, the area of the flow path between the outer wall surface of the valve portion 53 and the second inner wall surface 96 (annular valve seat 48) of the communication hole 47 when the valve portion 53 reaches the upper limit position is as follows. It is about 25 mm 2 .

弁部５３の外壁面の下端から下方に向かって円筒状垂設部９８が垂設される。該円筒状垂設部９８は、連通孔４７内に挿通される。円筒状垂設部９８の外径は、連通孔４７の第１内壁面９５の内径よりも僅かに小径に形成される。なお、円筒状垂設部９８の外壁面９８’と、連通孔４７の第１内壁面９５とは略平行である。円筒状垂設部９８の外径は、２．０ｍｍ〜９．９５ｍｍの範囲で形成されるのが好ましい。本実施形態では、円筒状垂設部９８の外径は、７．９ｍｍに形成される。そして、円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間に、容器口部３から連通孔４７に向かう内容物の流量を絞る環状の絞り流路１００が形成される。絞り流路１００は、内容物を吐出する際、逆止弁２１が弾性変形して、弁部５３が軸方向に沿って移動している間、その流路面積が変化することはない。本実施形態では、絞り流路１００の流路面積は、約１．２５ｍｍ２となる。絞り流路１００の流路面積は、弁部５３が上限位置に到達した際の、弁部５３の外壁面と連通孔４７の第２内壁面９６との間の流路面積、及び後述する案内筒状体２２の吐出孔６５の流路面積よりも小さくなるように設定される。 A cylindrical suspended portion 98 is suspended downward from the lower end of the outer wall surface of the valve portion 53. The cylindrical hanging portion 98 is inserted into the communication hole 47. The outer diameter of the cylindrical hanging portion 98 is formed to be slightly smaller than the inner diameter of the first inner wall surface 95 of the communication hole 47. The outer wall surface 98 ′ of the cylindrical hanging portion 98 and the first inner wall surface 95 of the communication hole 47 are substantially parallel. The outer diameter of the cylindrical hanging portion 98 is preferably formed in the range of 2.0 mm to 9.95 mm. In the present embodiment, the outer diameter of the cylindrical hanging portion 98 is formed to 7.9 mm. Then, between the outer wall surface 98 ′ of the cylindrical hanging portion 98 and the first inner wall surface 95 of the communication hole 47, an annular throttle channel 100 that restricts the flow rate of the contents from the container port 3 toward the communication hole 47. Is formed. When discharging the contents, the throttle channel 100 does not change its channel area while the check valve 21 is elastically deformed and the valve portion 53 is moving along the axial direction. In the present embodiment, the flow passage area of the throttle flow passage 100 is about 1.25 mm 2 . The flow passage area of the throttle flow passage 100 is the flow passage area between the outer wall surface of the valve portion 53 and the second inner wall surface 96 of the communication hole 47 when the valve portion 53 reaches the upper limit position, and guidance described later. It is set to be smaller than the flow path area of the discharge hole 65 of the cylindrical body 22.

図１及び図５に示すように、案内筒状体２２は、逆止弁２１の上方に配置される。該案内筒状体２２は、主キャップ体２０の円筒状主嵌合壁部２６に嵌合される円筒状支持部６２と、円筒状支持部６２の内側に同心状に配置され、内部に吐出孔６５を有する円筒状案内部６３と、円筒状支持部６２の上端と円筒状案内部６３の下端とを一体的に接続する環状水平壁部６４と、から構成される。吐出孔６５は逆止弁２１の各流通孔９２と連通される。吐出孔６５の内径は、最小部位で１．５ｍｍ〜６．０ｍｍの範囲内で形成されるのが好ましい。本実施形態では、吐出孔６５の内径は、最小部位で２．５ｍｍに形成される。円筒状支持部６２は、逆止弁２１を構成する円筒状支持部５１の上方に配置される。円筒状支持部６２の外壁面には、周方向に延びる突条係止部６６が形成される。案内筒状体２２の円筒状支持部６２の周壁部の厚みと、逆止弁２１の円筒状支持部５１の周壁部の厚みとは略同一である。案内筒状体２２の円筒状支持部６２の内径は、逆止弁２１の円筒状支持部５１の内径と略同じである。環状水平壁部６４には、円筒状支持部６２の外周面から径方向外方に突設される環状鍔部６７が形成される。   As shown in FIGS. 1 and 5, the guide cylindrical body 22 is disposed above the check valve 21. The guide cylindrical body 22 is disposed concentrically on the inner side of the cylindrical support portion 62 and the cylindrical support portion 62 that is fitted to the cylindrical main fitting wall portion 26 of the main cap body 20, and is discharged inside. A cylindrical guide part 63 having a hole 65 and an annular horizontal wall part 64 integrally connecting the upper end of the cylindrical support part 62 and the lower end of the cylindrical guide part 63 are configured. The discharge hole 65 communicates with each flow hole 92 of the check valve 21. The inner diameter of the discharge hole 65 is preferably formed within a range of 1.5 mm to 6.0 mm at the minimum part. In the present embodiment, the inner diameter of the discharge hole 65 is 2.5 mm at the minimum part. The cylindrical support portion 62 is disposed above the cylindrical support portion 51 that constitutes the check valve 21. On the outer wall surface of the cylindrical support portion 62, a protrusion locking portion 66 extending in the circumferential direction is formed. The thickness of the peripheral wall portion of the cylindrical support portion 62 of the guide cylindrical body 22 and the thickness of the peripheral wall portion of the cylindrical support portion 51 of the check valve 21 are substantially the same. The inner diameter of the cylindrical support portion 62 of the guide cylindrical body 22 is substantially the same as the inner diameter of the cylindrical support portion 51 of the check valve 21. The annular horizontal wall portion 64 is formed with an annular flange portion 67 projecting radially outward from the outer peripheral surface of the cylindrical support portion 62.

そこで、本実施形態では、案内筒状体２２の吐出孔６５の流路面積（約４．９１ｍｍ２）は、弁部５３が上限位置に到達した際の、弁部５３の外壁面と連通孔４７の第２内壁面９６との間の流路面積（約２５ｍｍ２）よりもはるかに小さいために、絞り流路１００は、その流路面積（約１．２５ｍｍ２）が、吐出孔６５の流路面積（約４．９１ｍｍ２）よりも小さくなるように構成される。そして、本実施形態では、絞り流路１００の流路面積の、吐出孔６５の流路面積に対する比率は、０．２５であり、絞り流路１００の流路面積の、吐出孔６５の流路面積に対する比率を、１／２より小さく設定すればよい。
すなわち、実験結果によると、絞り流路１００の流路面積の、吐出孔６５の流路面積に対する比率が０．２５の場合、またその比率が、０．３５の場合、さらにその比率が０．４５の場合には、吐出孔６５からの内容物が急激に（勢いよく）、また多量に吐出されず、所望の箇所に適宜量の内容物を吐出させることができる。しかしながら、絞り流路１００の流路面積の、吐出孔６５の流路面積に対する比率が、０．５を超え、０．５５の場合には、吐出孔６５からの内容物が若干多くの量吐出され、所望の箇所に内容物を適宜量吐出させることが困難になりつつあった。なお、絞り流路１００を設けずに、吐出孔６５の流路面積を１．２５ｍｍ２に設定した場合には、内容物が勢いよく（遠くまで）出過ぎてしまい、内容物を所望の場所、すなわち狙った場所に出し難くなる、という問題が発生する。 Therefore, in this embodiment, the flow passage area (about 4.91 mm 2 ) of the discharge hole 65 of the guide cylindrical body 22 is equal to the outer wall surface of the valve portion 53 and the communication hole when the valve portion 53 reaches the upper limit position. 47 is much smaller than the channel area (about 25 mm 2 ) between the second inner wall surface 96 and the second inner wall surface 96, the throttle channel 100 has a channel area (about 1.25 mm 2 ) of the discharge hole 65. It is comprised so that it may become smaller than a flow-path area (about 4.91 mm < 2 >). In this embodiment, the ratio of the channel area of the throttle channel 100 to the channel area of the discharge hole 65 is 0.25, and the channel area of the throttle channel 100 is the channel of the discharge hole 65. What is necessary is just to set the ratio with respect to an area smaller than 1/2.
That is, according to the experimental results, when the ratio of the channel area of the throttle channel 100 to the channel area of the discharge hole 65 is 0.25, and when the ratio is 0.35, the ratio is further reduced to 0.1. In the case of 45, the content from the discharge hole 65 is abruptly (vigorously) and is not discharged in large quantities, and an appropriate amount of content can be discharged to a desired location. However, when the ratio of the channel area of the throttle channel 100 to the channel area of the discharge hole 65 exceeds 0.5 and is 0.55, the content from the discharge hole 65 is discharged in a slightly larger amount. As a result, it has become difficult to appropriately discharge the contents to a desired location. In addition, when the flow path area of the discharge hole 65 is set to 1.25 mm 2 without providing the throttle flow path 100, the contents are excessively (distantly) discharged, and the contents are moved to a desired place, That is, there arises a problem that it is difficult to take out the target place.

また、図１及び図３に示すように、蓋体５は、主キャップ体２０の胴部２５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２０の胴部２５の外壁面に接続される胴部７０と、該胴部７０の上端の周方向全域に一体的に接続される略円形の天面部７１と、から構成される。胴部７０の下部内壁面には、突条係止部７２が内方に向かって突設される。天面部７１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２２の円筒状案内部６３の上端内部に緊密に嵌合する円筒状密着部７３が垂設される。天面部７１の、円筒状密着部７３と胴部７０との間には、円筒状飛散抑制部７４が垂設される。胴部７０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７５が周方向に沿う所定範囲で外方に向かって突設される。   Further, as shown in FIGS. 1 and 3, the lid body 5 is integrally connected to the body portion 25 of the main cap body 20 via the hinge 6. The lid body 5 is connected to the outer wall surface of the trunk portion 25 of the main cap body 20 via the hinge 6, and the substantially circular shape integrally connected to the entire circumferential direction of the upper end of the trunk portion 70. And the top surface portion 71. On the lower inner wall surface of the body portion 70, a protrusion locking portion 72 is provided so as to protrude inward. A cylindrical contact portion 73 that fits tightly inside the upper end of the cylindrical guide portion 63 of the guide cylindrical body 22 constituting the cap body 4 is suspended from the central portion in the radial direction of the top surface portion 71. Between the cylindrical contact portion 73 and the body portion 70 of the top surface portion 71, a cylindrical scattering suppression portion 74 is suspended. On the side of the upper outer wall surface of the body portion 70, on the side opposite to the hinge 6 side, a gripping portion 75 that is gripped by the user protrudes outward in a predetermined range along the circumferential direction.

次に、以上説明した、第１実施形態に係るキャップ１ａを組み立て、容器口部３に装着する方法を説明する。
図１を参照して、まず、主キャップ体２０の環状壁部４０上に、逆止弁２１を上方から組み込む。詳しくは、逆止弁２１の円筒状支持部５１の外壁面が主キャップ体２０の円筒状主嵌合壁部２６の内壁面に沿うようにして配置する。続いて、案内筒状体２２を、その円筒状支持部６２の外壁面が主キャップ体２０の円筒状主嵌合壁部２６の内壁面に沿うように、逆止弁２１の上方から押し込むようにして、逆止弁２１の円筒状支持部５１の下端部を、主キャップ体２０の環状壁部４０の基部に設けた環状の収容溝部４１に収容しつつ、案内筒状体２２の円筒状支持部６２の外壁面に設けた突条係止部６６を、主キャップ体２０の円筒状主嵌合壁部２６の内壁面に設けた環状嵌合凹部３２に嵌合して組み付ける。 Next, a method for assembling the cap 1a according to the first embodiment described above and mounting the cap 1a on the container mouth portion 3 will be described.
With reference to FIG. 1, first, a check valve 21 is assembled on the annular wall portion 40 of the main cap body 20 from above. Specifically, the outer wall surface of the cylindrical support portion 51 of the check valve 21 is arranged along the inner wall surface of the cylindrical main fitting wall portion 26 of the main cap body 20. Subsequently, the guide cylindrical body 22 is pushed from above the check valve 21 so that the outer wall surface of the cylindrical support portion 62 is along the inner wall surface of the cylindrical main fitting wall portion 26 of the main cap body 20. Thus, the cylindrical shape of the guide cylindrical body 22 is accommodated while the lower end portion of the cylindrical support portion 51 of the check valve 21 is accommodated in the annular accommodation groove portion 41 provided in the base portion of the annular wall portion 40 of the main cap body 20. The protrusion locking portion 66 provided on the outer wall surface of the support portion 62 is fitted and assembled to the annular fitting recess 32 provided on the inner wall surface of the cylindrical main fitting wall portion 26 of the main cap body 20.

これにより、逆止弁２１の弁部５３の外壁面が連通孔４７の第２内壁面９６（環状弁座４８）に着座して、弾性部９０（各弾性片９１）の下向きの付勢力により、常時、弁部５３の外壁面が連通孔４７の第２内壁面９６（環状弁座４８）に隙間なく密着して押圧するようになる。また、逆止弁２１の円筒状垂設部９８が連通孔４７内に挿通されて、円筒状垂設部９８の下端が連通孔４７の第１内壁面９５の下端から下方に突出した状態となる。さらに、逆止弁２１の円筒状支持部５１の内壁面と収容溝部４１の対向壁面に設けた流通溝部４５との間に各流通路４６が形成され、該各流通路４６は、収容溝部４１の底部に設けた各流通孔４２に連通する。これにより、主キャップ体２０の環状壁部４０上の空間８０ａ及び案内筒状体２２から下方の空間８０ｂは、連通孔４７の他、各流通路４６及び各流通孔４２を介して容器口部３と連通するようになる。さらに、逆止弁２１の弁部５３の直上に、案内筒状体２２の円筒状案内部６３が位置して、キャップ本体４の組み付けが完了する。   As a result, the outer wall surface of the valve portion 53 of the check valve 21 is seated on the second inner wall surface 96 (annular valve seat 48) of the communication hole 47, and due to the downward biasing force of the elastic portion 90 (each elastic piece 91). The outer wall surface of the valve portion 53 always comes into close contact with the second inner wall surface 96 (annular valve seat 48) of the communication hole 47 without any gap. Further, the cylindrical suspended portion 98 of the check valve 21 is inserted into the communication hole 47, and the lower end of the cylindrical suspended portion 98 protrudes downward from the lower end of the first inner wall surface 95 of the communication hole 47. Become. Further, each flow passage 46 is formed between the inner wall surface of the cylindrical support portion 51 of the check valve 21 and the flow groove portion 45 provided on the opposite wall surface of the storage groove portion 41, and each flow passage 46 is formed in the storage groove portion 41. It communicates with each flow hole 42 provided in the bottom of each. As a result, the space 80 a on the annular wall portion 40 of the main cap body 20 and the space 80 b below the guide cylindrical body 22 are connected to the container mouth portion via the flow passages 46 and the flow holes 42 in addition to the communication holes 47. 3 will communicate. Furthermore, the cylindrical guide part 63 of the guide cylindrical body 22 is positioned immediately above the valve part 53 of the check valve 21, and 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７０に設けた突条係止部７２が、主キャップ体２０の環状水平壁部２７に設けた突条係止部３５を乗り越えるように係合すると共に、蓋体５の天面部７１に設けた円筒状密着部７３が、キャップ本体４の案内筒状体２２の円筒状案内部６３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 portion 72 provided on the body portion 70 of the lid body 5 engages so as to get over the protrusion locking portion 35 provided on the annular horizontal wall portion 27 of the main cap body 20, and the lid body. A cylindrical contact portion 73 provided on the top surface portion 71 of 5 is tightly fitted inside the upper end of the cylindrical guide portion 63 of the guide cylindrical body 22 of the cap body 4.

次に、本キャップ１ａを容器口部３に打栓により装着する際には、容器口部３を、キャップ本体４の円筒状主嵌合壁部２６と胴部２５との間の環状空間２８内に挿入する。すると、主キャップ体２０の円筒状副嵌合壁部３６の内壁面と容器口部３の大径口部１１の外壁面とが密着すると共に、主キャップ体２０の円筒状主嵌合壁部２６の外壁面と容器口部３の小径口部１２の内壁面とが密着する。さらに、容器口部３の最大径口部１３が、主キャップ体２０の胴部２５の下部内壁面に設けた突条係止部３０を乗り越えるようにして、最大径口部１３と突条係止部３０とが係合すると共に、容器口部３の最大径口部１３が主キャップ体２０の胴部２５の内壁面に密着する。この結果、容器口部３の縮径口部１４及び拡径口部１５が下方から押し上げられることでそれぞれ弾性変形して、縮径口部１４及び拡径口部１５の径方向に沿う付勢力により、容器口部３の小径口部１２の内壁面から主キャップ体２０の円筒状主嵌合壁部２６の外壁面に向かう押圧力が高められ、容器口部３の最大径口部１３の外壁面から主キャップ体１１の胴部２５の内壁面に向かう押圧力が高められる。そして、本キャップ１ａが容器口部３に打栓により装着される。   Next, when the cap 1 a is attached to the container mouth 3 by plugging, the container mouth 3 is placed in the annular space 28 between the cylindrical main fitting wall portion 26 and the trunk portion 25 of the cap body 4. Insert inside. Then, the inner wall surface of the cylindrical sub-fitting wall portion 36 of the main cap body 20 and the outer wall surface of the large-diameter mouth portion 11 of the container mouth portion 3 are in close contact, and the cylindrical main fitting wall portion of the main cap body 20 The outer wall surface of 26 and the inner wall surface of the small-diameter mouth portion 12 of the container mouth portion 3 are in close contact with each other. Further, the maximum diameter mouth portion 13 and the ridge engagement portion are arranged so that the maximum diameter mouth portion 13 of the container mouth portion 3 gets over the ridge locking portion 30 provided on the lower inner wall surface of the trunk portion 25 of the main cap body 20. While the stop 30 is engaged, the maximum diameter mouth portion 13 of the container mouth portion 3 is in close contact with the inner wall surface of the trunk portion 25 of the main cap body 20. As a result, the diameter-reduced mouth part 14 and the diameter-enlarged mouth part 15 of the container mouth part 3 are respectively elastically deformed by being pushed up from below, and the urging force along the radial direction of the diameter-reduced mouth part 14 and the diameter-enlarged mouth part 15 Thus, the pressing force from the inner wall surface of the small-diameter mouth portion 12 of the container mouth portion 3 toward the outer wall surface of the cylindrical main fitting wall portion 26 of the main cap body 20 is increased, and the maximum diameter mouth portion 13 of the container mouth portion 3 is increased. The pressing force from the outer wall surface toward the inner wall surface of the trunk portion 25 of the main cap body 11 is increased. Then, the cap 1a is attached to the container opening 3 by plugging.

次に、第１実施形態に係るキャップ１ａの作用を説明する。
内容物を吐出する際には、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２２を外部に露出させる。
次に、使用者が容器２の胴部１０を圧搾して容器２に内圧を加える。すると、図６（ｂ）及び図７に示すように、容器２の内圧が逆止弁２１の弁部５３の下壁面全域に作用して、逆止弁２１の弾性部９０（各弾性片９１）が弾性変形することで、弁部５３が上方に最大限移動して、弁部５３の外壁面が連通孔４７の第２内壁面９６である環状弁座４８から離脱されると共に、逆止弁２１の円筒状垂設部９８の下端が連通孔４７の第１内壁面９５の下端より若干上側に到達する。この結果、連通孔４７が開放、すなわち、円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間の環状の絞り流路１００が開放され、容器口部３からの内容物がこの絞り流路１００を通過して、弁部５３の外壁面と連通孔４７の第２内壁面９６（環状弁座４８）との間から、環状壁部４０上の空間８０ａに吐出される。このとき、容器口部３から連通孔４７に向かう内容物は、絞り流路１００を通過することで、その流量が絞られて環状壁部４０上の空間８０ａに吐出される。その後、環状壁部４０上の空間８０ａに到達した内容物は、各弾性片９１間の各流通孔９２を通過して空間８０ｂに至り、案内筒状体２２の円筒状案内部６３の吐出孔６５から、外部に適宜量吐出される。 Next, the operation of the cap 1a according to the first embodiment will be described.
When discharging the contents, first, as shown in FIG. 6A, the lid 5 is opened to expose the guide cylindrical body 22 of the cap body 4 to the outside.
Next, the user squeezes the body 10 of the container 2 to apply internal pressure to the container 2. Then, as shown in FIGS. 6B and 7, the internal pressure of the container 2 acts on the entire lower wall surface of the valve portion 53 of the check valve 21, and the elastic portion 90 (each elastic piece 91 of the check valve 21 is ) Is elastically deformed, the valve portion 53 is moved upward as much as possible, the outer wall surface of the valve portion 53 is detached from the annular valve seat 48 which is the second inner wall surface 96 of the communication hole 47, and the check The lower end of the cylindrical hanging portion 98 of the valve 21 reaches slightly above the lower end of the first inner wall surface 95 of the communication hole 47. As a result, the communication hole 47 is opened, that is, the annular throttle channel 100 between the outer wall surface 98 ′ of the cylindrical hanging portion 98 and the first inner wall surface 95 of the communication hole 47 is opened, and the container mouth portion 3. From the space between the outer wall surface of the valve portion 53 and the second inner wall surface 96 (annular valve seat 48) of the communication hole 47, the space 80a on the annular wall portion 40 passes through the throttle channel 100. Discharged. At this time, the contents from the container port 3 toward the communication hole 47 pass through the throttle channel 100, so that the flow rate thereof is throttled and discharged to the space 80 a on the annular wall 40. After that, the contents that have reached the space 80a on the annular wall 40 pass through the flow holes 92 between the elastic pieces 91 to reach the space 80b, and the discharge holes of the cylindrical guide part 63 of the guide cylindrical body 22 An appropriate amount is discharged from 65 to the outside.

内容物を吐出した後、容器２の胴部１０への圧搾を止めると、逆止弁２１の弾性部９０（各弾性片９１）が復元して、弁部５３の外壁面が連通孔４７の第２内壁面９６である環状弁座４８に着座し、弁部５３により環状壁部４０の連通孔４７が閉塞される。これと同時に、逆止弁２１の円筒状垂設部９８の下端が連通孔４７の第１内壁面９５の下端から下方に突出した初期状態に戻る。そして、逆止弁２１の弁部５３は、弾性部９０（各弾性片９１）の付勢力により環状弁座４８を押圧するように付勢する。この結果、吐出直後、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、エアの容器２内への流入を抑制することができる。   When the compression of the container 2 to the body portion 10 is stopped after the contents are discharged, the elastic portion 90 (each elastic piece 91) of the check valve 21 is restored, and the outer wall surface of the valve portion 53 is connected to the communication hole 47. The valve seat 53 is seated on the annular valve seat 48 that is the second inner wall surface 96, and the communication hole 47 of the annular wall portion 40 is closed. At the same time, the cylindrical lower portion 98 of the check valve 21 returns to the initial state in which the lower end protrudes downward from the lower end of the first inner wall surface 95 of the communication hole 47. And the valve part 53 of the non-return valve 21 is urged | biased so that the annular valve seat 48 may be pressed with the urging | biasing force of the elastic part 90 (each elastic piece 91). As a result, immediately after discharge, 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.

なお、逆止弁２１の弁部５３の外壁面が連通孔４７の環状弁座４８に着座した後、案内筒状体２２の吐出孔６５から外部に吐出されなかった内容物、すなわち、環状壁部４０上の空間８０ａ及び案内筒状体２２から下方の空間８０ｂに残存した内容物の一部は、逆止弁２１の円筒状支持部５１の内壁面と収容溝部４１の対向壁面に設けた流通溝部４５との間の各流通路４６から、収容溝部４１の底部に設けた各流通孔４２を通って、容器２内に戻るようになる。そして、内容物の一部が容器２内に戻った後は、逆止弁２１の円筒状支持部５１の内壁面と収容溝部４１に設けた流通溝部４５との間の各流通路４６は、その流路面積が極小であるために、内容物の表面張力により閉塞される。これにより、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、吐出直後、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内の内容物の一部を容器２内に戻しつつ、容器２内を迅速に密封することができ、エアの容器２内への流入を抑制することができる。   In addition, after the outer wall surface of the valve portion 53 of the check valve 21 is seated on the annular valve seat 48 of the communication hole 47, the contents that are not discharged to the outside from the discharge hole 65 of the guide cylindrical body 22, that is, the annular wall A part of the content remaining in the space 80 a on the portion 40 and the space 80 b below the guide cylindrical body 22 is provided on the inner wall surface of the cylindrical support portion 51 of the check valve 21 and the opposite wall surface of the accommodation groove portion 41. From the respective flow paths 46 between the flow grooves 45 and the flow grooves 42 provided in the bottom of the storage groove 41, the flow returns to the container 2. Then, after a part of the contents returns into the container 2, each flow passage 46 between the inner wall surface of the cylindrical support portion 51 of the check valve 21 and the flow groove portion 45 provided in the accommodation groove portion 41 is Since the channel area is extremely small, it is blocked by the surface tension of the contents. Thereby, the inside of the container 2 can be maintained in a sealed state. In this way, immediately after the discharge, the user can quickly seal the inside of the container 2 while returning a part of the contents in the cap body 4 that has not been discharged into the container 2 without manually operating the cap 1. It is possible to suppress the inflow of air into the container 2.

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７０に設けた突条係止部７２が、キャップ本体４（主キャップ体２０）の環状水平壁部２７に設けた突条係止部３５を乗り越えるように係合すると共に、蓋体５の天面部７１に設けた円筒状密着部７３が、キャップ本体４の案内筒状体２２の円筒状案内部６３の上端内部に緊密に嵌合される。   Next, when the hinge 6 is bent and the lid 5 is covered so as to cover the cap body 4 from above, the protrusion locking portion 72 provided on the body portion 70 of the lid 5 is connected to the cap body 4 (main cap). The cylindrical contact portion 73 provided on the top surface portion 71 of the lid body 5 is engaged with the projection locking portion 35 provided on the annular horizontal wall portion 27 of the body 20), and the guide cylinder of the cap body 4. The cylindrical body 22 is tightly fitted inside the upper end of the cylindrical guide portion 63.

以上説明したように、第１実施形態に係るキャップ１ａでは、逆止弁２１の円筒状垂設部９８の外壁面９８’と、連通孔４７の第１内壁面９５との間に環状の絞り流路１００を設けたので、内容物の吐出時、容器口部３から連通孔４７に向かう内容物が、絞り流路１００を通過することで、その流量が絞られて環状壁部４０上の空間８０ａに吐出される。これにより、容器口部３からの内容物はその流量が絞られて、案内筒状体２２の吐出孔６５から外部に吐出されるので、使用者が意図する適宜量の内容物を外部に吐出させることができる。
また、第１実施形態に係るキャップ１ａでは、絞り流路１００の流路面積が、吐出孔６５の流路面積よりも小さく、具体的には、絞り流路１００の流路面積の、吐出孔６５の流路面積に対する比率を１／２より小さく設定しているので、使用者が意図する適宜量の内容物を確実に外部に吐出させることができる。言い換えれば、本キャップ１ａでは、吐出孔６５の流路面積だけを小さくして、内容物の吐出量を当該吐出孔６５にて絞ると、内容物の流速が大きくなり、内容物が勢い良く出過ぎて、所望の場所、すなわち狙った場所に出し難い、という問題を解消することができる。 As described above, in the cap 1 a according to the first embodiment, an annular throttle is formed between the outer wall surface 98 ′ of the cylindrical hanging portion 98 of the check valve 21 and the first inner wall surface 95 of the communication hole 47. Since the flow channel 100 is provided, when the content is discharged, the content flowing from the container port 3 toward the communication hole 47 passes through the throttle channel 100, so that the flow rate is reduced and the content on the annular wall portion 40 is reduced. It is discharged into the space 80a. Accordingly, the flow rate of the contents from the container mouth 3 is reduced and discharged to the outside from the discharge hole 65 of the guide cylindrical body 22, so that an appropriate amount of contents intended by the user is discharged to the outside. Can be made.
Further, in the cap 1a according to the first embodiment, the flow passage area of the throttle channel 100 is smaller than the flow channel area of the discharge hole 65, specifically, the discharge hole having the flow channel area of the throttle channel 100. Since the ratio of 65 to the flow path area is set to be smaller than 1/2, an appropriate amount of contents intended by the user can be reliably discharged to the outside. In other words, in the present cap 1a, when only the flow passage area of the discharge hole 65 is reduced and the discharge amount of the content is reduced by the discharge hole 65, the flow rate of the content increases, and the content is excessively ejected. Thus, it is possible to solve the problem that it is difficult to place the desired place, that is, the aimed place.

なお、上述した第１実施形態に係るキャップ１ａでは、逆止弁２１の弁部５３に設けた円筒状垂設部９８の外径を、連通孔４７の第１内壁面９５の内径よりも僅かに小径に形成して、円筒状垂設部９８の外壁面９８’と、連通孔４７の第１内壁面９５との間に絞り流路１００を設けたが、逆止弁２１の円筒状垂設部９８の外径と、連通孔４７の第１内壁面９５の内径とを略一致（円筒状垂設部９８が連通孔４７内を挿通可能な極小のクリアランスは有する）させて、円筒状垂設部９８の外壁面９８’、または連通孔４７の第１内壁面９５に縦方向に延びる絞り流路用の溝部を形成してもよい。   In the cap 1 a according to the first embodiment described above, the outer diameter of the cylindrical hanging portion 98 provided in the valve portion 53 of the check valve 21 is slightly smaller than the inner diameter of the first inner wall surface 95 of the communication hole 47. The throttle channel 100 is provided between the outer wall surface 98 ′ of the cylindrical hanging portion 98 and the first inner wall surface 95 of the communication hole 47. The outer diameter of the installation portion 98 and the inner diameter of the first inner wall surface 95 of the communication hole 47 are substantially matched (the cylindrical hanging portion 98 has a minimum clearance through which the communication hole 47 can be inserted) to form a cylindrical shape. A throttle channel groove extending in the vertical direction may be formed in the outer wall surface 98 ′ of the hanging portion 98 or the first inner wall surface 95 of the communication hole 47.

次に、第２実施形態に係るキャップ１ｂを、図８〜図１０に基づいて詳しく説明する。なお、図８では蓋体５の図示が省略されている。第２実施形態に係るキャップ１ｂを説明する際には、第１実施形態に係るキャップ１ａとの相違点のみを説明する。
第２実施形態に係るキャップ１ｂにおいて、図８を参照して、キャップ本体４の環状壁部４０の径方向中心部には、平面視略円形状の連通孔４７が形成される。該連通孔４７の内壁面全域が環状弁座４８として機能する。該環状弁座４８は倒立円錐状面に形成される。 Next, the cap 1b according to the second embodiment will be described in detail with reference to FIGS. In addition, illustration of the cover body 5 is abbreviate | omitted in FIG. When describing the cap 1b according to the second embodiment, only differences from the cap 1a according to the first embodiment will be described.
In the cap 1b according to the second embodiment, referring to FIG. 8, a communication hole 47 having a substantially circular shape in plan view is formed at the radial center of the annular wall 40 of the cap body 4. The entire inner wall surface of the communication hole 47 functions as an annular valve seat 48. The annular valve seat 48 is formed in an inverted conical surface.

第２実施形態に係るキャップ１ｂでは、図８及び図９に示すように、逆止弁２１に備えた弁部５３は、第１実施形態に係るキャップ１ａにおける弁部５３に設けた円筒状垂設部９８を備えていない。弁部５３の外壁面が連通孔４７の内壁面である環状弁座４８（倒立円錐状面）に着座する。また、逆止弁２１の環状弾性部５２は、薄肉壁部５７と厚肉壁部５８とが混在して構成される。具体的には、厚肉壁部５８は、所定幅を有して放射状に複数形成される。厚肉壁部５８は平面視略矩形状に形成される。厚肉壁部５８は周方向に９０°ピッチで４箇所形成される。隣接する厚肉壁部５８間に薄肉壁部５７が形成される。薄肉壁部５７は平面視扇状に形成される。薄肉壁部５７の面積は、厚肉壁部５８の面積に対して、相当大きく形成される。   In the cap 1b according to the second embodiment, as shown in FIGS. 8 and 9, the valve portion 53 provided in the check valve 21 is a cylindrical droop provided in the valve portion 53 in the cap 1a according to the first embodiment. The installation part 98 is not provided. The outer wall surface of the valve portion 53 is seated on an annular valve seat 48 (an inverted conical surface) that is the inner wall surface of the communication hole 47. The annular elastic portion 52 of the check valve 21 is configured by mixing a thin wall portion 57 and a thick wall portion 58. Specifically, a plurality of thick wall portions 58 are radially formed with a predetermined width. The thick wall portion 58 is formed in a substantially rectangular shape in plan view. The thick wall portions 58 are formed at four positions with a 90 ° pitch in the circumferential direction. Thin wall portions 57 are formed between adjacent thick wall portions 58. The thin wall portion 57 is formed in a fan shape in plan view. The area of the thin wall portion 57 is considerably larger than the area of the thick wall portion 58.

各薄肉壁部５７には、径方向及び周方向においてその中央位置にオリフィス５４がそれぞれ形成される。オリフィス５４は連通孔４７と連通される。本実施形態では、オリフィス５４は、周方向に沿って９０°ピッチで４箇所形成される。オリフィス５４の内径は全て同じである。オリフィス５４の内径は、０．３ｍｍ〜１．５ｍｍの範囲で形成されるのが好ましい。本実施形態では、オリフィス５４の内径は、０．８ｍｍである。なお、各オリフィス５４においてその内径を互いに相違させてもよい。要するに、各オリフィス５４の全流路面積が、案内筒状体２２の吐出孔６５の流路面積、及び弁部５３が上限位置に到達した際の、弁部５３の外壁面と連通孔４７の内壁面（環状弁座４８）との間の流路面積よりも小さくなるように、オリフィス５４の数量及び内径が設定される。詳しくは、オリフィス５４の数量及び内径を、オリフィス５４の全流路面積の、吐出孔６５の流路面積に対する比率が１／２より小さくなるように構成すればよい。また、本実施形態では、オリフィス５４を薄肉壁部５７に設けているが、厚肉壁部５８に設けてもよい。   Each thin wall portion 57 is formed with an orifice 54 at the center position in the radial direction and the circumferential direction. The orifice 54 communicates with the communication hole 47. In the present embodiment, four orifices 54 are formed at a 90 ° pitch along the circumferential direction. The inner diameters of the orifices 54 are all the same. The inner diameter of the orifice 54 is preferably formed in the range of 0.3 mm to 1.5 mm. In this embodiment, the inner diameter of the orifice 54 is 0.8 mm. The orifices 54 may have different inner diameters. In short, the total flow passage area of each orifice 54 is equal to the flow passage area of the discharge hole 65 of the guide cylindrical body 22 and the outer wall surface of the valve portion 53 and the communication hole 47 when the valve portion 53 reaches the upper limit position. The number and inner diameter of the orifice 54 are set so as to be smaller than the flow path area between the inner wall surface (annular valve seat 48). Specifically, the number and the inner diameter of the orifices 54 may be configured such that the ratio of the total flow passage area of the orifices 54 to the flow passage area of the discharge holes 65 is smaller than ½. In the present embodiment, the orifice 54 is provided in the thin wall portion 57, but may be provided in the thick wall portion 58.

次に、第２実施形態に係るキャップ１ｂの作用を説明する。
内容物の吐出時には、使用者が容器２の胴部１０を圧搾して容器２に内圧を加える。すると、図１０（ａ）の初期状態から図１０（ｂ）に示すように、容器２の内圧が逆止弁２１の弁部５３の下壁面全域に作用して、逆止弁２１の環状弾性部５２が弾性変形することで、弁部５３が上方に最大限移動し、弁部５３の外壁面が、連通孔４７の内壁面である環状弁座４８から離脱する。この結果、環状壁部４０の連通孔４７が開放されて、容器２内の内容物が、弁部５３の外壁面と環状壁部４０の連通孔４７の内壁面である環状弁座４８との間から主キャップ体２０の環状壁部４０上の空間８０ａ、すなわち、逆止弁２１の環状弾性部５２と主キャップ体２０の環状壁部４０との間の空間８０ａに吐出される。 Next, the operation of the cap 1b according to the second embodiment will be described.
When discharging the contents, the user squeezes the body 10 of the container 2 to apply an internal pressure to the container 2. Then, as shown in FIG. 10B from the initial state of FIG. 10A, the internal pressure of the container 2 acts on the entire lower wall surface of the valve portion 53 of the check valve 21 and the annular elasticity of the check valve 21. When the portion 52 is elastically deformed, the valve portion 53 moves upward as much as possible, and the outer wall surface of the valve portion 53 is detached from the annular valve seat 48 that is the inner wall surface of the communication hole 47. As a result, the communication hole 47 of the annular wall portion 40 is opened, and the contents in the container 2 are formed between the outer wall surface of the valve portion 53 and the annular valve seat 48 that is the inner wall surface of the communication hole 47 of the annular wall portion 40. The space 80a on the annular wall portion 40 of the main cap body 20 is discharged from the gap, that is, the space 80a between the annular elastic portion 52 of the check valve 21 and the annular wall portion 40 of the main cap body 20.

その後、空間８０ａ内に到達した内容物は、環状弾性部５２に設けた各オリフィス５４を通過して各オリフィス５４から空間８０ｂに吐出されるが、内容物が各オリフィス５４を通過する際、その流量が連通孔４７を通過した流量よりも絞られて空間８０ｂに吐出される。その後、空間８０ｂ内に到達した内容物は、案内筒状体２２の円筒状案内部６３の吐出孔６５を経て、外部に適宜量吐出される。   Thereafter, the contents that have reached the space 80a pass through the respective orifices 54 provided in the annular elastic portion 52 and are discharged from the respective orifices 54 to the space 80b. When the contents pass through the respective orifices 54, The flow rate is reduced more than the flow rate passing through the communication hole 47 and discharged to the space 80b. Thereafter, the content that has reached the space 80b is discharged to the outside in an appropriate amount through the discharge hole 65 of the cylindrical guide portion 63 of the guide cylindrical body 22.

内容物を吐出した後、容器２の胴部１０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、逆止弁２１の環状弾性部５２が復元して、弁部５３の外壁面が連通孔４７の内壁面である環状弁座４８に着座して、弁部５３により環状壁部４０の連通孔４７が閉塞される。具体的には、逆止弁２１の弁部５３は、環状弾性部５２の付勢力により環状弁座４８を押圧するように付勢する。この結果、吐出直後、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、エアの容器２内への流入を抑制することができる。   When the compression of the container 2 to the trunk portion 10 is stopped after the contents are discharged, the internal pressure to the container 2 is released, so that the annular elastic portion 52 of the check valve 21 is restored, and the valve portion 53 The outer wall surface is seated on the annular valve seat 48 that is the inner wall surface of the communication hole 47, and the communication hole 47 of the annular wall portion 40 is closed by the valve portion 53. Specifically, the valve portion 53 of the check valve 21 is urged so as to press the annular valve seat 48 by the urging force of the annular elastic portion 52. As a result, immediately after discharge, 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.

以上説明したように、第２実施形態に係るキャップ１ｂでは、キャップ本体４の構成である逆止弁２１の環状弾性部５２に複数のオリフィス５４を設けたので、内容物の吐出時、開放された連通孔４７から空間８０ａに吐出された内容物は、逆止弁２１の環状弾性部５２に設けた各オリフィス５４を通過することで、その流量が絞られて空間８０ｂに吐出される。このように、容器口部３からの内容物の流量を絞って、案内筒状体２２の吐出孔６５から外部に吐出されるので、使用者が意図する適宜量の内容物を外部に吐出させることができる。   As described above, in the cap 1b according to the second embodiment, since the plurality of orifices 54 are provided in the annular elastic portion 52 of the check valve 21 which is the configuration of the cap body 4, the cap 1b is opened when the contents are discharged. The contents discharged from the communicating hole 47 into the space 80a pass through the orifices 54 provided in the annular elastic portion 52 of the check valve 21, so that the flow rate is reduced and discharged into the space 80b. In this way, the flow rate of the content from the container opening 3 is reduced and discharged to the outside from the discharge hole 65 of the guide cylindrical body 22, so that an appropriate amount of the content intended by the user is discharged to the outside. be able to.

また、第２実施形態に係るキャップ１ｂでは、環状弾性部５２の弾性力により、逆止弁２１の弁部５３を適宜の力でスムーズに軸方向に沿って移動させて、その上限位置を規定することができ、一方、常時は、弁部５３を、連通孔４７を閉塞する方向に付勢することができ、容器２内を密封することができる。そして、オリフィス５４は薄肉壁部５７に設けられているので、上述した環状弾性部５２の弾性力を維持することができる。また、オリフィス５４は、環状弾性部５２の周方向に沿って間隔を置いて複数形成されるので、内容物が、案内筒状体２２の吐出孔６５から吐出される際、内容物を偏りなく吐出させることができる。
さらに、第２実施形態に係るキャップ１ｂでは、逆止弁２１の環状弾性部５２には、厚肉壁部５８を、弁部５３の径方向中心、すなわち、樹脂ゲート部（中心）から放射状に複数箇所周方向に沿って等間隔で設けているので、樹脂の流れが円滑で、薄肉壁部５７がショートモールドになることを抑制することができる。 Further, in the cap 1b according to the second embodiment, the valve portion 53 of the check valve 21 is smoothly moved along the axial direction with an appropriate force by the elastic force of the annular elastic portion 52, and the upper limit position is defined. On the other hand, normally, the valve portion 53 can be urged in the direction of closing the communication hole 47, and the inside of the container 2 can be sealed. And since the orifice 54 is provided in the thin wall part 57, the elastic force of the annular elastic part 52 mentioned above can be maintained. In addition, since a plurality of orifices 54 are formed at intervals along the circumferential direction of the annular elastic portion 52, the contents are not biased when the contents are discharged from the discharge holes 65 of the guide cylindrical body 22. Can be discharged.
Furthermore, in the cap 1b according to the second embodiment, the thick wall portion 58 is radially formed on the annular elastic portion 52 of the check valve 21 from the radial center of the valve portion 53, that is, the resin gate portion (center). Since it is provided at equal intervals along the circumferential direction at a plurality of locations, the flow of the resin is smooth, and the thin wall portion 57 can be prevented from becoming a short mold.

また、第１実施形態に係るキャップ１ａと、第２実施形態に係るキャップ１ｂとを組み合わせるように構成してもよい。すなわち、第１実施形態に係るキャップ１ａにおいて、その逆止弁２１の弾性部９０の構成を、第２実施形態に係るキャップ１ｂに備えた逆止弁２１の環状弾性部５２の構成に変更することもできる。この実施形態では、環状弾性部５２に設けた各オリフィス５４の全流路面積を、逆止弁２１の円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間の環状の絞り流路１００の流路面積よりも小さく設定する必要がある。   Moreover, you may comprise so that the cap 1a which concerns on 1st Embodiment and the cap 1b which concerns on 2nd Embodiment may be combined. That is, in the cap 1a according to the first embodiment, the configuration of the elastic portion 90 of the check valve 21 is changed to the configuration of the annular elastic portion 52 of the check valve 21 provided in the cap 1b according to the second embodiment. You can also. In this embodiment, the total flow passage area of each orifice 54 provided in the annular elastic portion 52 is equal to the outer wall surface 98 ′ of the cylindrical hanging portion 98 of the check valve 21 and the first inner wall surface 95 of the communication hole 47. It is necessary to set smaller than the channel area of the annular throttle channel 100 in between.

この実施形態に係るキャップでは、内容物の吐出時、逆止弁２１の環状弾性部５２が弾性変形することで、弁部５３が上方に最大限移動して、弁部５３の外壁面が環状壁部４０の連通孔４７の第２内壁面９６である環状弁座４８から離脱すると共に、円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間の環状の絞り流路１００が開放される。そして、容器口部３からの内容物がこの絞り流路１００を通過してその流量が絞られて、環状壁部４０上の空間８０ａに吐出される。その後、環状壁部４０上の空間８０ａに到達した内容物は、環状弾性部５２に設けた各オリフィス５４を通過することで、その流量がさらに絞られて空間８０ｂに至り、案内筒状体２２の吐出孔６５から外部に吐出される。これにより、容器口部３からの内容物を２段階に亘ってその流量を絞ることができる。この実施形態に係るキャップは、容器２内の内容物が比較的粘性の低い場合に適している。   In the cap according to this embodiment, when the contents are discharged, the annular elastic portion 52 of the check valve 21 is elastically deformed, so that the valve portion 53 moves to the maximum extent and the outer wall surface of the valve portion 53 is annular. Annulus between the outer wall surface 98 ′ of the cylindrical hanging portion 98 and the first inner wall surface 95 of the communication hole 47 is detached from the annular valve seat 48 that is the second inner wall surface 96 of the communication hole 47 of the wall portion 40. The throttle channel 100 is opened. Then, the contents from the container mouth 3 pass through the throttle channel 100 and the flow rate thereof is throttled and discharged to the space 80 a on the annular wall 40. Thereafter, the contents that have reached the space 80a on the annular wall portion 40 pass through the orifices 54 provided in the annular elastic portion 52, whereby the flow rate is further reduced to reach the space 80b, and the guide cylindrical body 22 is reached. The discharge holes 65 are discharged to the outside. Thereby, the flow volume of the contents from the container mouth part 3 can be reduced in two stages. The cap according to this embodiment is suitable when the content in the container 2 is relatively low in viscosity.

次に、第３実施形態に係るキャップ１ｃを、図１１〜図１３に基づいて説明する。なお、図１１では蓋体５の図示が省略されている。また、第３実施形態に係るキャップ１ｃを説明する際には、第１実施形態に係るキャップ１ａとの相違点のみを説明する。
当該第３実施形態に係るキャップ１ｃでは、図１１及び図１２に示すように、案内筒状体２２には、円筒状案内部６３の吐出孔６５周りから弁部５３に向かって円筒状垂設部１０５が垂設される。円筒状垂設部１０５の下面は、弁部５３の上壁面と当接できるように、弁部５３の上壁面と同じ曲率の球面状に凹設されている。円筒状垂設部１０５の下面には、周方向に間隔を置いて複数の流通凹部１０６が形成されている。本実施形態では、流通凹部１０６は１２０°ピッチで３箇所形成されている。流通凹部１０６はコ字状に形成されている。流通凹部１０６の全流路面積が、逆止弁２１の円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間の環状の絞り流路１００の流路面積よりも小さくなるように、流通凹部１０６の幅長、深さ並びにその数量が設定される。 Next, the cap 1c according to the third embodiment will be described with reference to FIGS. In addition, illustration of the cover body 5 is abbreviate | omitted in FIG. Moreover, when describing the cap 1c according to the third embodiment, only differences from the cap 1a according to the first embodiment will be described.
In the cap 1 c according to the third embodiment, as shown in FIGS. 11 and 12, the guide cylindrical body 22 has a cylindrical suspension extending from the periphery of the discharge hole 65 of the cylindrical guide portion 63 toward the valve portion 53. The part 105 is suspended. The lower surface of the cylindrical hanging portion 105 is recessed in a spherical shape having the same curvature as that of the upper wall surface of the valve portion 53 so as to be able to come into contact with the upper wall surface of the valve portion 53. A plurality of flow recesses 106 are formed on the lower surface of the cylindrical hanging portion 105 at intervals in the circumferential direction. In the present embodiment, the flow recesses 106 are formed at three positions with a 120 ° pitch. The circulation recess 106 is formed in a U shape. The total channel area of the flow recess 106 is the channel area of the annular throttle channel 100 between the outer wall surface 98 ′ of the cylindrical hanging portion 98 of the check valve 21 and the first inner wall surface 95 of the communication hole 47. The width, depth, and quantity of the flow recess 106 are set so as to be smaller.

次に、第３実施形態に係るキャップ１ｃの作用を説明する。
内容物の吐出時には、使用者が容器２の胴部１０を圧搾して容器２に内圧を加える。すると、図１３（ａ）の初期状態から図１３（ｂ）に示すように、逆止弁２１の弾性部９０（各弾性片９１）が弾性変形することで、弁部５３が上方に最大限移動して、弁部５３の上壁面が案内筒状体２２の円筒状垂設部１０５の下面に当接される。そしてこれと同時に、弁部５３の外壁面が環状壁部４０の連通孔４７の第２内壁面９６である環状弁座４８から離脱されると共に、逆止弁２１の円筒状垂設部９８の下端が連通孔４７の第１内壁面９５の下端より若干上側に到達する。この結果、円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間の環状の絞り流路１００が開放され、容器口部３からの内容物がこの絞り流路１００を通過して、環状壁部４０上の空間８０ａに吐出される。このとき、容器口部３からの内容物は、絞り流路１００を通過することで、その流量が絞られて環状壁部４０上の空間８０ａに吐出される。 Next, the operation of the cap 1c according to the third embodiment will be described.
When discharging the contents, the user squeezes the body 10 of the container 2 to apply an internal pressure to the container 2. Then, as shown in FIG. 13B from the initial state of FIG. 13A, the elastic portion 90 (each elastic piece 91) of the check valve 21 is elastically deformed, so that the valve portion 53 is maximized upward. By moving, the upper wall surface of the valve portion 53 comes into contact with the lower surface of the cylindrical hanging portion 105 of the guide cylindrical body 22. At the same time, the outer wall surface of the valve portion 53 is detached from the annular valve seat 48 that is the second inner wall surface 96 of the communication hole 47 of the annular wall portion 40, and the cylindrical hanging portion 98 of the check valve 21 is The lower end reaches slightly above the lower end of the first inner wall surface 95 of the communication hole 47. As a result, the annular throttle channel 100 between the outer wall surface 98 ′ of the cylindrical hanging portion 98 and the first inner wall surface 95 of the communication hole 47 is opened, and the contents from the container mouth portion 3 are transferred to the throttle flow. It passes through the passage 100 and is discharged into the space 80 a on the annular wall 40. At this time, the content from the container mouth 3 passes through the throttle channel 100, so that its flow rate is throttled and discharged into the space 80 a on the annular wall 40.

その後、環状壁部４０上の空間８０ａに到達した内容物は、隣接する弾性片９１間の流通孔９２を通過して空間８０ｂに至り、さらに、空間８０ｂから案内筒状体２２の円筒状垂設部１０５の下面に設けた各流通凹部１０６を通過して、案内筒状体２２の吐出孔６５から外部に吐出される。このとき、空間８０ｂに到達した内容物は、案内筒状体２２の円筒状垂設部１０５の下面に設けた各流通凹部１０６を通過することで、その流量がさらに絞られて、案内筒状体２２の吐出孔６５から外部に吐出される。   Thereafter, the contents that have reached the space 80a on the annular wall portion 40 pass through the flow holes 92 between the adjacent elastic pieces 91 to reach the space 80b, and further, the cylindrical droop of the guide cylindrical body 22 from the space 80b. It passes through each flow recess 106 provided on the lower surface of the installation portion 105 and is discharged to the outside from the discharge hole 65 of the guide cylindrical body 22. At this time, the content that has reached the space 80 b passes through each flow recess 106 provided on the lower surface of the cylindrical hanging portion 105 of the guide cylindrical body 22, so that the flow rate is further reduced and the guide cylindrical shape is reduced. It is discharged outside through the discharge hole 65 of the body 22.

なお、容器２の胴部１０への圧搾を止めた後のキャップ１ｃの作用は、第２実施形態に係るキャップ１ｂの作用と同様であるために、ここでの説明を省略する。   In addition, since the effect | action of the cap 1c after stopping the compression to the trunk | drum 10 of the container 2 is the same as the effect | action of the cap 1b which concerns on 2nd Embodiment, description here is abbreviate | omitted.

以上説明したように、第３実施形態に係るキャップ１ｃでは、逆止弁２１の円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間に環状の絞り流路１００を設け、案内筒状体２２の円筒状垂設部１０５の下面に各流通凹部１０６を設けたので、容器口部３からの内容物を２段階に亘ってその流量を絞って外部に吐出させることができる。第３実施形態に係るキャップ１ｃでは、容器２内の内容物が比較的粘性の低い場合に適している。   As described above, in the cap 1 c according to the third embodiment, an annular throttle flow is formed between the outer wall surface 98 ′ of the cylindrical hanging portion 98 of the check valve 21 and the first inner wall surface 95 of the communication hole 47. Since the passage 100 is provided and the flow recesses 106 are provided on the lower surface of the cylindrical hanging portion 105 of the guide cylindrical body 22, the content from the container mouth portion 3 is reduced to the outside through two stages. Can be discharged. The cap 1c according to the third embodiment is suitable when the contents in the container 2 are relatively low in viscosity.

なお、第２実施形態に係るキャップ１ｂと、第３実施形態に係るキャップ１ｃとを組み合わせるように構成してもよい。すなわち、第３実施形態に係るキャップ１ｃにおいて、その逆止弁２１の弾性部９０の構成を、第２実施形態に係るキャップ１ｂに備えた逆止弁２１の環状弾性部５２の構成に変更することもできる。この実施形態では、環状弾性部５２に設けた各オリフィス５４の全流路面積を、逆止弁２１の円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間の環状の絞り流路１００の流路面積よりも小さくして、さらに、案内筒状体２２の円筒状垂設部１０５の下面に設けた各流路凹部１０６の全流路面積を、各オリフィス５４の全流路面積よりも小さく設定する必要がある。   Note that the cap 1b according to the second embodiment and the cap 1c according to the third embodiment may be combined. That is, in the cap 1c according to the third embodiment, the configuration of the elastic portion 90 of the check valve 21 is changed to the configuration of the annular elastic portion 52 of the check valve 21 provided in the cap 1b according to the second embodiment. You can also. In this embodiment, the total flow passage area of each orifice 54 provided in the annular elastic portion 52 is equal to the outer wall surface 98 ′ of the cylindrical hanging portion 98 of the check valve 21 and the first inner wall surface 95 of the communication hole 47. The total channel area of each channel recess 106 provided on the lower surface of the cylindrical hanging portion 105 of the guide cylindrical body 22 is made smaller than the channel area of the annular throttle channel 100 between them. It is necessary to set smaller than the entire flow path area of the orifice 54.

この実施形態に係るキャップでは、内容物の吐出時、逆止弁２１の環状弾性部５２が弾性変形することで、弁部５３が上方に最大限移動して、弁部５３の上壁面が案内筒状体２２の円筒状垂設部１０５の下面に当接すると同時に、弁部５３の外壁面が環状壁部４０の連通孔４７の第２内壁面９６である環状弁座４８から離脱され、逆止弁２１の円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間の環状の絞り流路１００が開放される。そして、容器口部３からの内容物は、この絞り流路１００を通過してその流量が絞られて、環状壁部４０上の空間８０ａに吐出される。続いて、環状壁部４０上の空間８０ａに到達した内容物は、環状弾性部５２に設けた各オリフィス５４を通過することで、その流量がさらに絞られて空間８０ｂに吐出され、続いて、空間８０ｂに到達した内容物は、案内筒状体２２の円筒状垂設部１０５の下面に設けた各流路凹部１０６を通過することで、その流量がさらに絞られて、案内筒状体２２の吐出孔６５から外部に吐出される。これにより、容器口部３から内容物を３段階に亘ってその流量を絞って外部に吐出させることができる。この実施形態に係るキャップでは、容器２内の内容物が粘性の低い場合に適している。   In the cap according to this embodiment, when the contents are discharged, the annular elastic portion 52 of the check valve 21 is elastically deformed, whereby the valve portion 53 is moved upward as much as possible, and the upper wall surface of the valve portion 53 is guided. At the same time as contacting the lower surface of the cylindrical hanging portion 105 of the cylindrical body 22, the outer wall surface of the valve portion 53 is detached from the annular valve seat 48 that is the second inner wall surface 96 of the communication hole 47 of the annular wall portion 40, An annular throttle channel 100 between the outer wall surface 98 ′ of the cylindrical hanging portion 98 of the check valve 21 and the first inner wall surface 95 of the communication hole 47 is opened. Then, the contents from the container mouth 3 pass through the throttle channel 100, the flow rate thereof is throttled, and the contents are discharged into the space 80a on the annular wall 40. Subsequently, the content that has reached the space 80a on the annular wall portion 40 passes through each orifice 54 provided in the annular elastic portion 52, so that the flow rate is further reduced and discharged into the space 80b. The contents that have reached the space 80 b pass through each flow path recess 106 provided on the lower surface of the cylindrical hanging portion 105 of the guide cylindrical body 22, whereby the flow rate is further reduced, and the guide cylindrical body 22. The discharge holes 65 are discharged to the outside. As a result, the contents can be discharged from the container mouth 3 to the outside in three stages with the flow rate reduced. The cap according to this embodiment is suitable when the contents in the container 2 are low in viscosity.

なお、第３実施形態に係るキャップ１ｃにおいて、逆止弁２１の円筒状垂設部９８の外壁面９８’と連通孔４７の第１内壁面９５との間に設けた絞り流路１００に変わって、第２実施形態に係るキャップ１ｂに備えたオリフィス５４を採用してもよい。この実施形態の場合は、案内筒状体２２の円筒状垂設部１０５の下面に設けた各流路凹部１０６の全流路面積を、各オリフィス５４の全流路面積よりも小さく設定する必要がある。
また、第３実施形態に係るキャップ１ｃでは、絞り流路１００を設け、さらに、案内筒状体２２の下面に各流通凹部１０６を設けたが、必ずしも、絞り流路１００を設ける必要はない。この実施形態の場合は、各流通凹部１０６の全流路面積を、弁部５３が上限位置に到達した際の、弁部５３の外壁面と連通孔４７の内壁面（環状弁座４８）との間の流路面積よりも小さく設定する必要がある。 In the cap 1c according to the third embodiment, the throttle channel 100 is provided between the outer wall surface 98 ′ of the cylindrical hanging portion 98 of the check valve 21 and the first inner wall surface 95 of the communication hole 47. The orifice 54 provided in the cap 1b according to the second embodiment may be employed. In the case of this embodiment, it is necessary to set the total flow path area of each flow path recess 106 provided on the lower surface of the cylindrical hanging portion 105 of the guide cylindrical body 22 to be smaller than the total flow path area of each orifice 54. There is.
Further, in the cap 1c according to the third embodiment, the throttle channel 100 is provided, and each flow recess 106 is provided on the lower surface of the guide cylindrical body 22, but the throttle channel 100 is not necessarily provided. In the case of this embodiment, the total flow passage area of each flow recess 106 is defined by the outer wall surface of the valve portion 53 and the inner wall surface (annular valve seat 48) of the communication hole 47 when the valve portion 53 reaches the upper limit position. It is necessary to set it smaller than the flow path area between.

１ａ、１ｂ、１ｃ キャップ，２ 容器，３ 容器口部，４ キャップ本体，５ 蓋体，２０ 主キャップ体，２１ 逆止弁，２２ 案内筒状体，４７ 連通孔，５２ 環状弾性部，５３ 弁部，５４ オリフィス，５７ 薄肉壁部，５８ 厚肉壁部，６５ 吐出孔，９８ 筒状垂設部，１００ 絞り流路   1a, 1b, 1c cap, 2 container, 3 container opening, 4 cap body, 5 lid body, 20 main cap body, 21 check valve, 22 guide cylindrical body, 47 communication hole, 52 annular elastic part, 53 valve Part, 54 orifice, 57 thin wall part, 58 thick wall part, 65 discharge hole, 98 cylindrical suspended part, 100 throttle channel

Claims (7)

容器口部に嵌合され、吐出孔を有するキャップ本体と、該キャップ本体に被冠される蓋体とを備えた、合成樹脂製のキャップであって、
前記キャップ本体は、
前記吐出孔と前記容器口部とを連通する連通孔と、
該連通孔を開閉する逆止弁と、を備え、
該逆止弁は、
前記容器口部の軸方向に沿って移動して、前記連通孔を開閉する弁部と、
該弁部から一体的に垂設され、前記連通孔内に挿通する筒状垂設部と、を備え、
該筒状垂設部と前記連通孔との間に、前記容器口部から前記連通孔に向かう内容物の流量を絞る絞り流路が形成されることを特徴とするキャップ。 A cap made of a synthetic resin, including a cap body fitted to the container mouth and having a discharge hole, and a cap body to be crowned by the cap body,
The cap body is
A communication hole communicating the discharge hole and the container opening;
A check valve for opening and closing the communication hole,
The check valve
A valve part that moves along the axial direction of the container mouth part to open and close the communication hole;
A tubular suspended portion integrally suspended from the valve portion and inserted into the communication hole,
A cap having a throttle channel for reducing the flow rate of contents from the container port toward the communication hole is formed between the cylindrical hanging portion and the communication hole. 請求項１に記載のキャップであって、
前記絞り流路の流路面積は、前記吐出孔の流路面積よりも小さいことを特徴とするキャップ。 The cap according to claim 1,
A cap characterized in that a flow passage area of the throttle flow passage is smaller than a flow passage area of the discharge hole. 請求項１または２に記載のキャップであって、
前記逆止弁は、前記弁部の外周全域から連続して径方向外方に延び、前記弁部を、前記連通孔を閉塞する方向に付勢する環状弾性部を備え、
該環状弾性部に、前記連通孔からの内容物の流量を絞るオリフィスを設けることを特徴とするキャップ。 The cap according to claim 1 or 2,
The check valve includes an annular elastic portion that extends radially outward continuously from the entire outer periphery of the valve portion, and biases the valve portion in a direction to close the communication hole.
A cap characterized in that an orifice for restricting the flow rate of contents from the communication hole is provided in the annular elastic portion. 請求項３に記載のキャップであって、
前記環状弾性部は、厚肉壁部と薄肉壁部とから構成され、
前記オリフィスは前記薄肉壁部に設けられることを特徴とするキャップ。 The cap according to claim 3,
The annular elastic portion is composed of a thick wall portion and a thin wall portion,
The cap is characterized in that the orifice is provided in the thin wall portion. 請求項３または４に記載のキャップであって、
前記オリフィスは、前記環状弾性部に複数形成されることを特徴とするキャップ。 The cap according to claim 3 or 4,
A plurality of the orifices are formed in the annular elastic portion. 容器口部に嵌合され、吐出孔を有するキャップ本体と、該キャップ本体に被冠される蓋体とを備えた、合成樹脂製のキャップであって、
前記キャップ本体は、
前記吐出孔と前記容器口部とを連通する連通孔と、
該連通孔を開閉する逆止弁と、を備え、
該逆止弁は、
前記容器口部の軸方向に沿って移動して、前記連通孔を開閉する弁部と、
該弁部の外周全域から連続して径方向外方に延び、前記弁部を、前記連通孔を閉塞する方向に付勢する環状弾性部と、
該環状弾性部に設けられ、前記連通孔からの内容物の流量を絞るオリフィスと、
を備えることを特徴とするキャップ。 A cap made of a synthetic resin, including a cap body fitted to the container mouth and having a discharge hole, and a cap body to be crowned by the cap body,
The cap body is
A communication hole communicating the discharge hole and the container opening;
A check valve for opening and closing the communication hole,
The check valve
A valve part that moves along the axial direction of the container mouth part to open and close the communication hole;
An annular elastic portion that extends radially outward continuously from the entire outer periphery of the valve portion, and urges the valve portion in a direction to close the communication hole;
An orifice provided in the annular elastic portion, for restricting a flow rate of contents from the communication hole;
A cap characterized by comprising. 請求項６に記載のキャップであって、
前記オリフィスの流路面積は、前記吐出孔の流路面積よりも小さいことを特徴とするキャップ。 The cap according to claim 6,
The cap is characterized in that a flow passage area of the orifice is smaller than a flow passage area of the discharge hole.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019043644A (en) * 2017-09-06 2019-03-22 キッコーマン株式会社 cap
JP2020179908A (en) * 2019-04-26 2020-11-05 キョーラク株式会社 Cap and container

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130026196A1 (en) * 2011-07-25 2013-01-31 Jan Essebaggers Self closing flow control device with adjustable actuator element for container closures
US20140183154A1 (en) * 2011-07-25 2014-07-03 Jan Essebaggers Self closing flow control device with adjustable actuator element for container closures
JP2015009816A (en) * 2013-06-27 2015-01-19 株式会社吉野工業所 Hinge cap with check valve
JP2016216050A (en) * 2015-05-14 2016-12-22 東京ライト工業株式会社 cap
JP2017193352A (en) * 2016-04-20 2017-10-26 東京ライト工業株式会社 cap
JP2018154356A (en) * 2017-03-16 2018-10-04 日本クロージャー株式会社 Discharging cap

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130026196A1 (en) * 2011-07-25 2013-01-31 Jan Essebaggers Self closing flow control device with adjustable actuator element for container closures
US20140183154A1 (en) * 2011-07-25 2014-07-03 Jan Essebaggers Self closing flow control device with adjustable actuator element for container closures
JP2015009816A (en) * 2013-06-27 2015-01-19 株式会社吉野工業所 Hinge cap with check valve
JP2016216050A (en) * 2015-05-14 2016-12-22 東京ライト工業株式会社 cap
JP2017193352A (en) * 2016-04-20 2017-10-26 東京ライト工業株式会社 cap
JP2018154356A (en) * 2017-03-16 2018-10-04 日本クロージャー株式会社 Discharging cap

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019043644A (en) * 2017-09-06 2019-03-22 キッコーマン株式会社 cap
JP2020179908A (en) * 2019-04-26 2020-11-05 キョーラク株式会社 Cap and container
JP7335488B2 (en) 2019-04-26 2023-08-30 キョーラク株式会社 cap and container

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