JP7706740B2

JP7706740B2 - cap

Info

Publication number: JP7706740B2
Application number: JP2021107151A
Authority: JP
Inventors: 健太南; 健平野
Original assignee: Mikasa Sangyo Co Ltd
Current assignee: Mikasa Sangyo Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2025-07-14
Anticipated expiration: 2041-06-29
Also published as: JP2025128404A; JP2023005323A

Description

本発明は、容器に取り付けられるキャップに関する。 The present invention relates to a cap that is attached to a container.

醤油などの空気に触れると劣化しやすい内容液を保存する目的で、当該内容液を封入した容器の蓋として、弁を有するキャップが用いられている。当該キャップは、封入されている内容液を容器の外部に注ぎ出す際に弁を開き、それ以外の場合は弁を閉じて容器の内部に外部の空気が侵入することを防止している。 To preserve liquids such as soy sauce that deteriorate when exposed to air, caps with valves are used as lids for containers that enclose the liquid. The cap opens the valve when the enclosed liquid is poured out of the container, and closes the valve at other times to prevent outside air from entering the container.

このようなキャップの一例として、特許文献１には、内容液を注出させる注出筒の内部と容器の内部とを連通する内部筒と、その内部筒の内側に配置される移動弁とを有するキャップが開示されている。この特許文献１の図３に開示されているキャップは、内部筒の中で下部開口と上部開口との間を移動することができる移動弁を備えている。 As an example of such a cap, Patent Document 1 discloses a cap having an internal tube that connects the inside of the pouring tube for pouring out the liquid content with the inside of the container, and a movable valve disposed inside the internal tube. The cap disclosed in Figure 3 of Patent Document 1 is equipped with a movable valve that can move between a lower opening and an upper opening inside the internal tube.

容器の内部に外部の空気が侵入するのを防止するために弁を閉じた状態、すなわち閉弁状態では、移動弁は下部開口に配置される。内容液を容器の外部に注出するためには、移動弁を上部開口に向かって移動させる。移動弁の移動は、容器から内容液を注出させたい利用者が弾力性のある容器を握ることで、内容液により移動弁を押圧することにより行う。これにより移動弁と内部筒との間に内容液が通過することのできる空間が生じて、弁を開いた状態、すなわち開弁状態となって、容器の外部に内容液を注出することができる。 When the valve is closed to prevent outside air from entering the inside of the container, i.e., in the closed valve state, the movable valve is positioned at the bottom opening. To pour the contents out of the container, the movable valve is moved towards the top opening. The movable valve is moved by a user who wishes to pour the contents out of the container, grasping the elastic container and causing the contents to press the movable valve. This creates a space between the movable valve and the internal tube through which the contents can pass, opening the valve, i.e., in the open valve state, allowing the contents to be poured out of the container.

特開２０１８－１４０８３０号公報JP 2018-140830 A

このようなキャップでは開弁状態から閉弁状態に移行する際、内部筒の上部開口から下部開口に向かって、移動弁が移動する。これに伴い、内部筒の中では、移動弁と注出筒との間に空間が生じ、この空間に向かって注出筒の内部の内容液がサックバックされる。ところが、移動弁が下部開口に向かって安定して移動せず、内容液のサックバックが不十分となる場合がある。この場合、注出筒の内部にサックバックされなかった内容液が残存して、その内容液が容器の外部等に飛散する問題があった。 When this type of cap transitions from an open state to a closed state, the movable valve moves from the upper opening of the internal tube to the lower opening. As a result, a space is created between the movable valve and the dispensing tube inside the internal tube, and the contents inside the dispensing tube are sucked back toward this space. However, there are cases where the movable valve does not move stably toward the lower opening, resulting in insufficient sucking back of the contents. In this case, the contents that are not sucked back remain inside the dispensing tube, causing the problem of the contents being splashed outside the container, etc.

このため本発明では、注出筒の内部の内容液を安定してサックバックするために、閉弁位置に向かって安定して移動弁が移動することができるキャップを提供することを目的とする。 The present invention therefore aims to provide a cap in which the movable valve can stably move toward the closed valve position in order to stably suck back the liquid contents inside the dispensing tube.

上記課題を解決するために本発明のキャップは、容器の口部に取り付けられるキャップ本体と、前記容器とキャップ本体との間に配置される中栓とを備え、前記キャップ本体が、前記容器の内容液を注ぎ出す注出筒を有し、前記中栓が、前記注出筒の内部と容器の内部とを連通する筒状体と、前記筒状体の内部で注出筒側と容器側との間を移動する移動弁体と、前記注出筒側に移動した移動弁体の筒状体からの抜け出しを規制する弾性規制部材とを有し、前記筒状体は、前記注出筒側に移動した移動弁体との間に空間が形成されるとともに、前記容器側に移動した移動弁体により封止されるものであり、前記弾性規制部材が、前記注出筒側に移動した移動弁体を、弾性力により容器側に押圧するものであることを主要な特徴とする。 To solve the above problems, the cap of the present invention comprises a cap body that is attached to the mouth of a container, and an inner plug that is placed between the container and the cap body, the cap body having a pouring tube that pours out the liquid contents of the container, the inner plug having a cylindrical body that connects the inside of the pouring tube with the inside of the container, a movable valve body that moves between the pouring tube side and the container side inside the cylindrical body, and an elastic restricting member that restricts the movable valve body that has moved to the pouring tube side from escaping from the cylindrical body, a space is formed between the movable valve body that has moved to the pouring tube side and the cylindrical body, and the movable valve body that has moved to the container side is sealed, and the elastic restricting member presses the movable valve body that has moved to the pouring tube side toward the container side by elastic force.

このような構成であると、前記筒状体の内部で、前記容器側に向かって前記移動弁体が移動する際に、前記弾性規制部材の弾性力による前記容器側への押圧が、前記移動弁体に加わる。 With this configuration, when the moving valve body moves toward the container inside the cylindrical body, the elastic force of the elastic restricting member presses the moving valve body toward the container.

本発明のキャップは、筒状体の内部が、注出筒の内部と同一軸心上に配置されていることが好ましい。 The cap of the present invention is preferably arranged so that the inside of the cylindrical body is coaxial with the inside of the dispensing tube.

筒状体の内部と、注出筒の内部とが同一軸心上になければ、内容液の注出時の容器の姿勢によって、開弁状態となってから内容液が注出筒から注出されるまでの間に一時的にキャップの内部に溜められる内容液の量に差が生じる。よって、容器において異なる姿勢での内容液の注出を比較すると、注出開始時の注出感に差が生じる。しかし、筒状体の内部が、注出筒の内部と同一軸心上に配置されていれば、容器の姿勢が異なることにより、上記の一時的に溜められる内容液の量に差が生じないため、注出開始時の注出感に差が生じない。 If the inside of the cylindrical body and the inside of the dispensing tube are not on the same axis, the amount of liquid temporarily stored inside the cap between the time the valve is opened and the time the liquid is dispensed from the dispensing tube will differ depending on the position of the container when the liquid is dispensed. Therefore, when comparing the dispensing of liquid in different container positions, there will be a difference in the feel of the liquid when dispensing begins. However, if the inside of the cylindrical body is positioned on the same axis as the inside of the dispensing tube, there will be no difference in the amount of liquid temporarily stored due to the different container positions, and therefore no difference in the feel of the liquid when dispensing begins.

本発明のキャップは、弾性規制部材が、注出筒の内部と筒状体の内部とを連通する連通口を有することが好ましい。 In the cap of the present invention, it is preferable that the elastic regulating member has a communication port that connects the inside of the dispensing tube with the inside of the cylindrical body.

このような構成であると、連通口を内容液が通過して注出される。 With this configuration, the liquid content passes through the communication port and is poured out.

本発明のキャップは、弾性規制部材が、その中心に向かうにつれて容器側に突出した弾性傾斜部を有することが好ましい。 In the cap of the present invention, it is preferable that the elastic regulating member has an elastic inclined portion that protrudes toward the container as it moves toward the center.

弾性規制部材の弾性力は、弾性規制部材が移動弁体を規制した際に生じる弾性規制部材の変形量により定まる。弾性傾斜部の傾斜度合は、弾性規制部材の変形量を定める要素の１つであるため、このような構成であると、弾性規制部材の弾性力が、弾性傾斜部の傾斜度合によって定まる。 The elastic force of the elastic regulating member is determined by the amount of deformation of the elastic regulating member that occurs when the elastic regulating member regulates the moving valve body. Since the degree of inclination of the elastic inclined portion is one of the factors that determine the amount of deformation of the elastic regulating member, with this configuration, the elastic force of the elastic regulating member is determined by the degree of inclination of the elastic inclined portion.

本発明のキャップは、弾性傾斜部が、容器側に移動弁体との当接部を有し、前記当接部は、前記移動弁体の移動を規制するものであることが好ましい。 In the cap of the present invention, it is preferable that the elastic inclined portion has an abutment portion on the container side that abuts against the moving valve body, and that the abutment portion restricts the movement of the moving valve body.

このような構成であると、移動弁体の移動を前記当接部が規制する。 In this configuration, the abutment portion restricts the movement of the moving valve body.

本発明のキャップは、移動弁体が、球状弁体であり、中栓が、注出筒側への移動弁体の移動を案内する案内部を有し、前記案内部が、筒状体の内面から突出したものであることが好ましい。 In the cap of the present invention, it is preferable that the movable valve body is a spherical valve body, the inner plug has a guide portion that guides the movement of the movable valve body toward the dispensing tube, and the guide portion protrudes from the inner surface of the cylindrical body.

このような構成であると、前記移動弁体は、前記案内部により案内されるとともに、内容液が前記案内部と移動弁体との隙間を通過する。 With this configuration, the moving valve body is guided by the guide portion, and the liquid content passes through the gap between the guide portion and the moving valve body.

本発明のキャップは、筒状体が、側壁部と、前記側壁部に容器側で接続されて開口を有する筒底部とを有し、移動弁体が、前記筒底部の側壁部の内側に配置され、前記筒底部の開口よりも大径で、その開口を通って容器側へ移動するのを規制する抜け止め部と、前記筒底部の開口を通る柱部とを有することが好ましい。 The cap of the present invention is preferably such that the cylindrical body has a side wall and a cylinder bottom connected to the side wall on the container side and having an opening, the moving valve body is disposed inside the side wall of the cylinder bottom, has a larger diameter than the opening of the cylinder bottom, has a retaining portion that restricts the moving valve body from moving through the opening toward the container, and has a pillar portion that passes through the opening of the cylinder bottom.

このような構成であると、前記移動弁体の抜け止め部は、前記筒底部の開口よりも大径であるため、前記移動弁体が前記筒状体の内部から容器の内部に抜け出すことがない。また、前記筒状体の開口により前記柱部が、前記移動弁体の移動を案内する。 In this configuration, the retaining portion of the moving valve body has a larger diameter than the opening of the bottom of the cylinder, so the moving valve body will not slip out from inside the cylindrical body into the inside of the container. In addition, the opening of the cylindrical body allows the pillar portion to guide the movement of the moving valve body.

本発明のキャップは、柱部が、前記柱部の側面に突出した状態で柱部の軸心方向に延びる突起を有し、前記柱部突起は、柱部の周方向に隙間を隔てて複数配置されたものであることが好ましい。 The cap of the present invention has a column portion having a protrusion that extends in the axial direction of the column portion while protruding from the side surface of the column portion, and it is preferable that the column portion protrusions are arranged in a plurality of locations around the circumference of the column portion with gaps between them.

このような構成であると、前記筒状体の開口が、前記柱部突起により前記移動弁体を案内するとともに、前記柱部突起どうしの間に形成された、前記開口と移動弁体との隙間を内容液が通過する。 In this configuration, the opening of the cylindrical body guides the moving valve body by the column protrusions, and the liquid content passes through the gap between the opening and the moving valve body formed between the column protrusions.

本発明のキャップは、筒底部が、その開口の縁で注出筒側に突出する筒底部側環状突起を有し、抜け止め部が、その外縁で容器側に突出する抜け止め部側環状突起を有し、前記筒底部側環状突起が、前記容器側に移動した移動弁の抜け止め部側環状突起との間に、前記容器の内容液で封止する液封空間を形成するものであることが好ましい。 The cap of the present invention is preferably such that the tube bottom has a tube bottom side annular protrusion that protrudes toward the pouring tube at the edge of its opening, the retaining part has a retaining part side annular protrusion that protrudes toward the container at its outer edge, and the tube bottom side annular protrusion forms a liquid-sealed space sealed with the liquid contained in the container between the retaining part side annular protrusion of the movable valve that has moved toward the container.

このような構成であると、前記液封空間により筒状体が封止される。 With this configuration, the cylindrical body is sealed by the liquid-sealed space.

本発明のキャップによると、前記弾性規制部材から前記容器側に押圧が加えられた移動弁体は、閉弁位置に向かって安定して移動することができる。このため、注出筒の内部の内容液を安定してサックバックすることができる。 According to the cap of the present invention, the movable valve body, to which pressure is applied from the elastic restricting member toward the container side, can stably move toward the valve closing position. This allows the liquid contents inside the dispensing tube to be stably sucked back.

本発明の実施の第１形態におけるキャップの断面図である。FIG. 2 is a cross-sectional view of a cap according to the first embodiment of the present invention. 本発明の実施の第１形態における球状弁用筒状体の図である。（ａ）は断面図を示し、（ｂ）はＡ－Ａ矢視を示す。1A and 1B are diagrams showing a cylindrical body for a spherical valve according to a first embodiment of the present invention, in which (a) is a cross-sectional view and (b) is a view taken along the line AA. 本発明の実施の第１形態において、開弁状態の球状弁用中栓部分の拡大図である。FIG. 2 is an enlarged view of a spherical valve inner plug portion in an open state in the first embodiment of the present invention. 本発明の実施の第１形態において、閉弁状態の球状弁用中栓部分の拡大図である。FIG. 2 is an enlarged view of a spherical valve inner plug portion in a closed state in the first embodiment of the present invention. 本発明の実施の第２形態におけるキャップの断面図である。FIG. 11 is a cross-sectional view of a cap according to a second embodiment of the present invention. 本発明の実施の第２形態におけるＴ字弁用移動弁体の図である。（ａ）断面図を示し、（ｂ）はＢ－Ｂ矢視を示す。1A is a cross-sectional view of a moving valve body for a T-valve according to a second embodiment of the present invention, and FIG. 本発明の実施の第２形態において、開弁状態のＴ字弁用中栓部分の拡大図である。FIG. 11 is an enlarged view of a T-valve inner plug portion in an open state in a second embodiment of the present invention. 本発明の実施の第２形態において、閉弁状態のＴ字弁用中栓部分の拡大図である。FIG. 11 is an enlarged view of a T-valve inner plug portion in a closed state in a second embodiment of the present invention.

本発明の実施の形態について、２種類の形態を図１から図８を参照しながら説明する。なお、本明細書に示す「上」、「下」は、図１に示すように、キャップ１０に対し、容器９０が下方向に位置する状態での向きとする。また、「上」、「下」方向に対して垂直の方向を「水平」方向とする。 Two types of embodiments of the present invention will be described with reference to Figs. 1 to 8. Note that "upper" and "lower" in this specification refer to the orientation in which the container 90 is positioned downward relative to the cap 10, as shown in Fig. 1. The direction perpendicular to the "upper" and "lower" directions is referred to as the "horizontal" direction.

まず本発明の第１形態について図１から図４を参照して説明する。図１に示すように、本発明の実施の形態のキャップ１０は、例えば醤油などの内容液Ｌを入れる容器９０の口部９１に取り付けられて、口部９１を覆う。 First, a first embodiment of the present invention will be described with reference to Figs. 1 to 4. As shown in Fig. 1, a cap 10 according to an embodiment of the present invention is attached to a mouth 91 of a container 90 for holding a liquid content L, such as soy sauce, to cover the mouth 91.

容器９０は、外容器９２に、内容液Ｌが入れられる内容器９３を内包する二重構造容器である。口部９１は、外容器口部９２ａと、外容器口部９２ａの内部に隙間を隔てて配置される内容器口部９３ａとにより構成される。外容器口部９２ａは、その外面に外容器螺合部９２ｂが形成される。容器９０は、口部９１の蓋をした状態で押圧、すなわち外容器９２を押圧すると、内容器９３も外容器９２の押圧方向に変形する。一見すると、外容器９２と内容器９３との間には、内外圧調整空間Ｐがあり、外容器９２の変形は直接的に内容器９３に伝わらない。しかし、口部９１は蓋をされているため、外容器９２が押圧された場合に、内外圧調整空間Ｐの内部の空気は外部に流出することができず、外容器９２の変形に伴い、外容器９２に加圧された内外圧調整空間Ｐの空気が、内容器９３を押圧方向に変形させる。 The container 90 is a double-structure container in which an inner container 93 in which a content liquid L is placed is enclosed within an outer container 92. The mouth 91 is composed of an outer container mouth 92a and an inner container mouth 93a that is disposed inside the outer container mouth 92a with a gap therebetween. An outer container screw-fitting portion 92b is formed on the outer surface of the outer container mouth 92a. When the container 90 is pressed with the mouth 91 covered, that is, when the outer container 92 is pressed, the inner container 93 also deforms in the pressing direction of the outer container 92. At first glance, there is an internal/external pressure adjustment space P between the outer container 92 and the inner container 93, and the deformation of the outer container 92 is not directly transmitted to the inner container 93. However, because the mouth 91 is capped, when the outer container 92 is pressed, the air inside the internal/external pressure adjustment space P cannot flow out, and as the outer container 92 deforms, the air in the internal/external pressure adjustment space P pressurized by the outer container 92 deforms the inner container 93 in the pressing direction.

キャップ１０は、容器９０の口部９１に取り付けられるキャップ本体１１と、キャップ本体１１に取り付けられる球状弁用中栓１５（「中栓」の一例）とにより構成される。キャップ本体１１には、変形することのできるヒンジ１２を介して上蓋１３が一体で成形されている。キャップ本体１１と、ヒンジ１２と、上蓋１３とは、合成樹脂などを射出成形されたものである。容器９０に取り付けられたキャップ１０は、ヒンジ１２を変形させて、キャップ本体１１に形成された注出筒２１を覆う位置に、上蓋１３を配置することができる。このように上蓋１３を配置することで、容器９０は蓋をした状態となる。 The cap 10 is composed of a cap body 11 that is attached to the mouth 91 of the container 90, and a spherical valve stopper 15 (an example of an "inner stopper") that is attached to the cap body 11. A top lid 13 is integrally molded with the cap body 11 via a deformable hinge 12. The cap body 11, hinge 12, and top lid 13 are formed by injection molding synthetic resin or the like. The cap 10 attached to the container 90 can deform the hinge 12 to position the top lid 13 in a position that covers the pouring tube 21 formed on the cap body 11. By positioning the top lid 13 in this manner, the container 90 is in a covered state.

キャップ本体１１は、容器９０の内容液Ｌを注出する注出筒２１と、注出筒２１の下端から径方向の外向きに広がる天面部２２と、注出筒２１とは異なる位置で天面部２２から上方向に突出する空気取り入れ口２２ａと、天面部２２の外周から下方向に筒状に延びて容器９０の口部９１と螺合するキャップ本体外周筒状部２３とにより構成されている。キャップ本体外周筒状部２３の外周筒状部内面２３ａには、外容器螺合部９２ｂに螺合する外周筒状部螺合部２３ｂが形成されている。 The cap body 11 is composed of a pouring tube 21 for pouring out the liquid content L of the container 90, a top surface portion 22 that spreads outward in the radial direction from the bottom end of the pouring tube 21, an air intake port 22a that protrudes upward from the top surface portion 22 at a position different from the pouring tube 21, and a cap body outer tubular portion 23 that extends cylindrically downward from the outer periphery of the top surface portion 22 and screws into the mouth portion 91 of the container 90. The inner surface 23a of the outer tubular portion of the cap body outer tubular portion 23 is formed with an outer tubular portion screwing portion 23b that screws into the outer container screwing portion 92b.

球状弁用中栓１５は、注出筒２１の内部と容器９０の内部とを連通する球状弁用筒状体３０（「筒状体」の一例）と、球状弁用筒状体３０の内部に配置される球状弁３５（「移動弁体」の一例）と、球状弁用筒状体３０の開口に取り付けられる弾性規制部材４０とにより構成される。 The spherical valve plug 15 is composed of a spherical valve cylinder 30 (an example of a "cylindrical body") that connects the inside of the dispensing tube 21 with the inside of the container 90, a spherical valve 35 (an example of a "moving valve body") that is placed inside the spherical valve cylinder 30, and an elastic restricting member 40 that is attached to the opening of the spherical valve cylinder 30.

図２に示すように、球状弁用筒状体３０は、球状弁用筒状部３１と、球状弁用筒状部３１の外周部から径方向の外向きに広がる支持部３３とにより構成される。球状弁用筒状部３１は、軸心方向で一定の内径を有する筒状のストレート部３１ａと、ストレート部３１ａの２つの端部のうちの一方の端部に連続的に形成され、その内径が連続的に拡大する拡径部３１ｂと、ストレート部３１ａの２つの端部のうちの他方の端部に連続的に形成され、その内径が連続的に縮小する縮径部３１ｃとにより構成される。拡径部３１ｂには、軸心方向を向く上開口３１ｄが形成され、縮径部３１ｃには、軸心方向を向く下開口３１ｅが形成されている。上開口３１ｄ側にある支持部３３の上面には、環状の弾性規制部材嵌合部３３ａが設けられている。弾性規制部材嵌合部３３ａよりも径方向に沿った外側の位置には、下開口３１ｅ側の面である下面から上面にわたって切欠かれた空気弁用切り欠き３３ｂが形成されている。球状弁用筒状体３０は、合成樹脂などを射出成形したものである。 As shown in FIG. 2, the spherical valve cylindrical body 30 is composed of a spherical valve cylindrical portion 31 and a support portion 33 that expands radially outward from the outer periphery of the spherical valve cylindrical portion 31. The spherical valve cylindrical portion 31 is composed of a cylindrical straight portion 31a having a constant inner diameter in the axial direction, an enlarged diameter portion 31b that is continuously formed at one end of the straight portion 31a and whose inner diameter continuously expands, and a reduced diameter portion 31c that is continuously formed at the other end of the straight portion 31a and whose inner diameter continuously decreases. The enlarged diameter portion 31b has an upper opening 31d facing the axial direction, and the reduced diameter portion 31c has a lower opening 31e facing the axial direction. An annular elastic regulating member fitting portion 33a is provided on the upper surface of the support portion 33 on the upper opening 31d side. At a position radially outward from the elastic restriction member fitting portion 33a, an air valve cutout 33b is formed, which is cut from the lower surface, which is the surface on the lower opening 31e side, to the upper surface. The spherical valve cylinder 30 is made by injection molding synthetic resin or the like.

図１に示すように、キャップ本体１１の外周筒状部内面２３ａに支持部３３の外周部が対向し、キャップ本体１１の内側の面に支持部３３の上面が当接するように、キャップ本体１１の内側に球状弁用筒状体３０が配置される。また、球状弁用筒状部３１の内部（「筒状体の内部」の一例）は、注出筒２１の内部と、同一軸心上に配置されていることが好ましい。球状弁用筒状部３１の内部と、注出筒２１の内部とが同一軸心上になければ、内容液Ｌの注出時の容器９０の姿勢によって、開弁状態となってから注出筒２１から注出されるまでの間に一時的にキャップ本体１１の内部に溜められる内容液Ｌの量に差が生じる。よって、容器９０において異なる姿勢での内容液Ｌの注出を比較すると、注出開始時の注出感に差が生じる。しかし球状弁用筒状部３１の内部が、注出筒２１の内部と同一軸心上に配置されていれば、容器９０の姿勢が異なることにより、上記の一時的に溜められる内容液Ｌの量に差が生じないため、注出開始時の注出感に差が生じない。このため、キャップ本体１１に球状弁用筒状体３０を配置した際に、球状弁用筒状部３１の内部と、注出筒２１の内部とが同一軸心上に配置されるように、球状弁用筒状部３１に支持部３３が形成されていることが好ましい。 1, the spherical valve cylinder 30 is disposed inside the cap body 11 so that the outer periphery of the support portion 33 faces the inner surface 23a of the outer periphery of the cap body 11, and the upper surface of the support portion 33 abuts against the inner surface of the cap body 11. In addition, it is preferable that the inside of the spherical valve cylinder 31 (an example of the "inside of the cylinder") is disposed on the same axis as the inside of the dispensing tube 21. If the inside of the spherical valve cylinder 31 and the inside of the dispensing tube 21 are not on the same axis, the amount of the content liquid L temporarily stored inside the cap body 11 from the time the valve is opened until it is dispensed from the dispensing tube 21 will differ depending on the posture of the container 90 when the content liquid L is dispensed. Therefore, when comparing the dispensing of the content liquid L in different postures in the container 90, there will be a difference in the feeling of dispensing at the start of dispensing. However, if the interior of the spherical valve cylindrical portion 31 is arranged on the same axis as the interior of the pouring tube 21, there will be no difference in the amount of the liquid L temporarily stored due to the different attitudes of the container 90, and there will be no difference in the pouring feel at the start of pouring. For this reason, it is preferable that the support portion 33 is formed on the spherical valve cylindrical portion 31 so that the interior of the spherical valve cylindrical portion 31 and the interior of the pouring tube 21 are arranged on the same axis when the spherical valve cylindrical body 30 is arranged on the cap body 11.

図２に示すように、球状弁３５の球状弁用筒状部３１の軸心方向への移動を案内する案内部３２が、拡径部３１ｂの内面（「筒状体の内面」の一例）より突出することが好ましく、案内部３２は球状弁用筒状部３１の軸心方向に沿って設置されていることが好ましい。一方で、案内部３２を設置すると、内容液Ｌが通過する空間の水平方向の断面積が減少する。当該断面積の減少を低減するために、球状弁用筒状部３１の周方向に隙間を隔てて、複数の案内部３２を設置することが好ましい。これにより、球状弁用筒状部３１の軸心方向への球状弁３５の移動を、案内部３２が案内するとともに、案内部３２の間の隙間を内容液Ｌが通過する。すなわち、案内部３２の設置による内容液Ｌの通過する空間の水平方向の断面積の減少が低減して、案内部３２の設置による内容液Ｌの注出量の減少を低減することができる。 As shown in FIG. 2, it is preferable that the guide portion 32 that guides the movement of the spherical valve 35 in the axial direction of the cylindrical portion 31 for the spherical valve protrudes from the inner surface of the enlarged diameter portion 31b (an example of the "inner surface of the cylindrical body"), and it is preferable that the guide portion 32 is installed along the axial direction of the cylindrical portion 31 for the spherical valve. On the other hand, when the guide portion 32 is installed, the horizontal cross-sectional area of the space through which the content liquid L passes is reduced. In order to reduce the reduction in the cross-sectional area, it is preferable to install multiple guide portions 32 at gaps in the circumferential direction of the cylindrical portion 31 for the spherical valve. As a result, the guide portion 32 guides the movement of the spherical valve 35 in the axial direction of the cylindrical portion 31 for the spherical valve, and the content liquid L passes through the gaps between the guide portions 32. In other words, the reduction in the horizontal cross-sectional area of the space through which the content liquid L passes due to the installation of the guide portion 32 is reduced, and the reduction in the amount of the content liquid L dispensed due to the installation of the guide portion 32 can be reduced.

図１、図３、図４に示すように、球状弁３５は、球状弁用筒状部３１のストレート部３１ａの内径以下の大きさ、かつ下開口３１ｅの内径を超える大きさの外径を有し、合成樹脂などを射出成形して形成される。 As shown in Figures 1, 3, and 4, the spherical valve 35 has an outer diameter equal to or smaller than the inner diameter of the straight portion 31a of the cylindrical portion 31 for the spherical valve and larger than the inner diameter of the lower opening 31e, and is formed by injection molding of synthetic resin or the like.

弾性規制部材４０は、球状弁用筒状部３１の内部に配置された球状弁３５の移動を規制する部材である。弾性規制部材４０は、膜状の規制部４１と、規制部４１の外周から下方向に筒状に延びる弾性規制部材取り付け部４２と、弾性規制部材取り付け部４２の外縁部の一部から径方向の外向きに延びる空気弁４３とにより構成される。空気弁４３は、その根元を起点に上下方向に変形することができる。弾性規制部材４０は、球状弁３５よりも柔らかく、弾性変形する材料により成形される。 The elastic regulating member 40 is a member that regulates the movement of the spherical valve 35 arranged inside the spherical valve cylindrical portion 31. The elastic regulating member 40 is composed of a membrane-like regulating portion 41, an elastic regulating member attachment portion 42 that extends cylindrically downward from the outer periphery of the regulating portion 41, and an air valve 43 that extends radially outward from a part of the outer edge of the elastic regulating member attachment portion 42. The air valve 43 can deform in the vertical direction from its base. The elastic regulating member 40 is molded from a material that is softer than the spherical valve 35 and that is elastically deformable.

規制部４１は、球状弁３５の移動を規制する部位で、上開口３１ｄを覆うように配置される。一方で、規制部４１に上開口３１ｄが覆われると、内容液Ｌが上開口３１ｄを通過することができなくなる。よって、上開口３１ｄから内容液Ｌを通過させるために、注出筒２１の内部と球状弁用筒状体３０の内部とを連通する連通口４１ｂが、規制部４１の外縁部に形成されていることが好ましい。 The restricting portion 41 is a portion that restricts the movement of the spherical valve 35, and is arranged to cover the upper opening 31d. On the other hand, when the upper opening 31d is covered by the restricting portion 41, the liquid content L cannot pass through the upper opening 31d. Therefore, in order to allow the liquid content L to pass through the upper opening 31d, it is preferable that a communication port 41b that communicates between the inside of the pouring tube 21 and the inside of the spherical valve cylindrical body 30 is formed on the outer edge of the restricting portion 41.

規制部４１には、その中心に向かうにつれて容器９０側である下方向に突出する弾性傾斜部４１ａが形成されていることが好ましい。このようにすると、例えば規制部４１が下方向に傾斜する弾性傾斜部４１ａが形成された場合と、弾性傾斜部４１ａが形成されていない場合とを比較すると、規制部４１が上方向に押圧された際の弾性規制部材４０の変形量は、前者の方が大きくなる。つまり、弾性規制部材４０が押圧された際、弾性規制部材４０に生じる弾性力が大きくなる。 The restricting portion 41 is preferably formed with an elastic inclined portion 41a that protrudes downward toward the container 90 as it approaches the center. In this way, for example, when comparing a case in which the restricting portion 41 is formed with an elastic inclined portion 41a that inclines downward with a case in which the elastic inclined portion 41a is not formed, the amount of deformation of the elastic restricting member 40 when the restricting portion 41 is pressed upward is greater in the former case. In other words, when the elastic restricting member 40 is pressed, the elastic force generated in the elastic restricting member 40 is greater.

弾性規制部材４０は、規制部４１の容器９０側である下面に、環状の突起である弁体当接部４１ｃ（「当接部」の一例）が形成されていることが好ましい。このようにすると、弁体当接部４１ｃは、球状弁３５の一部分と嵌まるように当接して、球状弁３５の水平方向の移動を規制する。 The elastic restricting member 40 preferably has a valve body contact portion 41c (one example of an "contact portion") formed as an annular protrusion on the underside of the restricting portion 41 that faces the container 90. In this way, the valve body contact portion 41c comes into contact with and fits into a portion of the spherical valve 35, restricting the horizontal movement of the spherical valve 35.

球状弁３５と、弾性規制部材４０と、球状弁用筒状体３０との球状弁用中栓１５に対する配置、およびその球状弁用中栓１５のキャップ本体１１に対する配置について、図１により説明する。 The arrangement of the spherical valve 35, the elastic restricting member 40, and the spherical valve cylindrical body 30 relative to the spherical valve inner plug 15, and the arrangement of the spherical valve inner plug 15 relative to the cap body 11 are described with reference to FIG. 1.

球状弁３５と、弾性規制部材４０と、球状弁用筒状体３０との球状弁用中栓１５に対する配置ついて説明する。球状弁３５は、球状弁用筒状体３０の球状弁用筒状部３１の内部に配置される。弾性規制部材４０は、弾性規制部材取り付け部４２を弾性規制部材嵌合部３３ａに嵌合させた状態で、空気弁用切り欠き３３ｂと空気弁４３とが、球状弁用筒状部３１の軸心方向で重複するように、球状弁用筒状体３０に配置される。このように球状弁用筒状体３０に弾性規制部材４０を配置すると、上開口３１ｄを規制部４１が覆うように配置される。 The arrangement of the spherical valve 35, the elastic regulating member 40, and the spherical valve cylindrical body 30 relative to the spherical valve inner plug 15 will be described. The spherical valve 35 is arranged inside the spherical valve cylindrical portion 31 of the spherical valve cylindrical body 30. The elastic regulating member 40 is arranged in the spherical valve cylindrical body 30 so that the air valve notch 33b and the air valve 43 overlap in the axial direction of the spherical valve cylindrical portion 31 with the elastic regulating member mounting portion 42 fitted into the elastic regulating member fitting portion 33a. When the elastic regulating member 40 is arranged in the spherical valve cylindrical body 30 in this way, the regulating portion 41 is arranged to cover the upper opening 31d.

球状弁用中栓１５は、支持部３３の外周が外周筒状部内面２３ａに対向するとともに、キャップ本体１１と支持部３３の上面とが当接するように配置される。また、球状弁用中栓１５は、空気弁４３が空気取り入れ口２２ａを覆う状態で、キャップ本体１１に配置される。このように球状弁用中栓１５をキャップ本体１１に配置すると、球状弁用筒状部３１の内部が、注出筒２１の内部と同一軸心上に配置される。 The spherical valve stopper 15 is arranged so that the outer periphery of the support portion 33 faces the inner surface 23a of the outer circumferential cylindrical portion, and the cap body 11 and the upper surface of the support portion 33 are in contact. The spherical valve stopper 15 is also arranged in the cap body 11 with the air valve 43 covering the air intake port 22a. When the spherical valve stopper 15 is arranged in the cap body 11 in this manner, the interior of the spherical valve cylindrical portion 31 is arranged coaxially with the interior of the dispensing tube 21.

球状弁用中栓１５が配置されたキャップ本体１１は、容器９０の口部９１を覆うように配置される。キャップ本体１１は、外容器螺合部９２ｂに外周筒状部螺合部２３ｂを螺合することにより、容器９０の口部９１に配置される。このようにキャップ本体１１を、容器９０に配置することで、内容器９３の内部と球状弁用筒状体３０の内部とがつながって、内容器９３の内部と注出筒２１の内部とがつながる。また、空気弁４３が、その根元で下方向に変形することで、キャップ本体１１の空気取り入れ口２２ａと、内外圧調整空間Ｐとがつながる。 The cap body 11 with the spherical valve stopper 15 placed therein is positioned so as to cover the mouth 91 of the container 90. The cap body 11 is placed in the mouth 91 of the container 90 by screwing the outer cylindrical part screw part 23b into the outer container screw part 92b. By placing the cap body 11 in the container 90 in this manner, the inside of the inner container 93 is connected to the inside of the spherical valve cylindrical body 30, and the inside of the inner container 93 is connected to the inside of the dispensing tube 21. In addition, the air valve 43 deforms downward at its base, connecting the air intake 22a of the cap body 11 to the internal and external pressure adjustment space P.

キャップ１０が、開弁状態から閉弁状態へ移行する際の弁の動作について、図３、図４により説明する。 The operation of the valve when the cap 10 transitions from an open state to a closed state is explained with reference to Figures 3 and 4.

開弁状態の球状弁用中栓１５周辺の拡大図を図３に示す。例えば外容器９２を外側から押圧して、内外圧調整空間Ｐを加圧すると、内容器９３の内部の圧力が上昇して、注出筒２１側へ内容液Ｌが球状弁３５を押圧して、球状弁用筒状体３０の内部で、注出筒２１側へ向かって、球状弁３５が移動する。球状弁３５が拡径部３１ｂに達すると、球状弁３５と球状弁用筒状部３１との間に内容液Ｌの通過することができる液通路ＬＰが生じ、開弁状態となる。この後、弾性規制部材４０は、球状弁３５に押圧されて注出筒２１側への変形を伴いながら、球状弁３５の移動を規制する。なお、球状弁３５と球状弁用筒状部３１との間に液通路ＬＰが生じる状態が開弁状態であるが、図３は開弁状態のうち、球状弁３５が弾性規制部材４０に規制された状態を示している。 An enlarged view of the periphery of the spherical valve stopper 15 in the open state is shown in Figure 3. For example, when the outer container 92 is pressed from the outside to pressurize the internal and external pressure adjustment space P, the pressure inside the inner container 93 rises, and the content liquid L presses the spherical valve 35 toward the pouring tube 21 side, and the spherical valve 35 moves toward the pouring tube 21 side inside the spherical valve cylindrical body 30. When the spherical valve 35 reaches the enlarged diameter portion 31b, a liquid passage LP through which the content liquid L can pass is created between the spherical valve 35 and the spherical valve cylindrical portion 31, and the valve is in an open state. After this, the elastic regulating member 40 is pressed by the spherical valve 35 and deforms toward the pouring tube 21 side to regulate the movement of the spherical valve 35. The open valve state is when a liquid passage LP is created between the spherical valve 35 and the spherical valve cylindrical portion 31, and FIG. 3 shows the open valve state in which the spherical valve 35 is restricted by the elastic restricting member 40.

閉弁状態の球状弁用中栓１５周辺の拡大図を図４に示す。外容器９２への押圧を解除すると、内外圧調整空間Ｐへの加圧が解除され、内容器９３の内部の圧力が下がる。内容器９３の内部の内容液Ｌの一部は注出されているため、内容器９３の内部の圧力は大気圧よりも小さくなる。内容器９３の内部と外部との間には圧力差が生じて、これにより球状弁用筒状体３０の内部で下方向へ向かって球状弁３５が移動し、キャップ１０は開弁状態から閉弁状態へ移行する。この際、弾性規制部材４０の変形を伴って規制されていた球状弁３５は、内容器９３の内部と外部との間の圧力差により生じる下方向への力に加え、弾性規制部材４０により生じる弾性力により下方向へ力を加えられる。これにより、球状弁３５は下方向へ安定して移動することができる。球状弁３５が下方向へ移動すると、球状弁用筒状体３０の内部の球状弁３５に対して上方向にサックバック空間ＬＳが生じる。球状弁３５の移動により生じたサックバック空間ＬＳは、一時的に周囲の空間よりも圧力が低くなるため、注出筒２１の内部に残存していた内容液Ｌは、サックバック空間ＬＳにサックバックされる。このように下側へ安定して球状弁３５が移動するため、キャップ１０は、注出筒２１の内部に残存する内容液Ｌを安定して、サックバック空間ＬＳにサックバックすることができる。 An enlarged view of the periphery of the spherical valve stopper 15 in the closed state is shown in Figure 4. When the pressure on the outer container 92 is released, the pressure on the internal and external pressure adjustment space P is released, and the pressure inside the inner container 93 drops. Since part of the content liquid L inside the inner container 93 has been poured out, the pressure inside the inner container 93 becomes smaller than atmospheric pressure. A pressure difference occurs between the inside and outside of the inner container 93, which causes the spherical valve 35 to move downward inside the spherical valve cylindrical body 30, and the cap 10 transitions from an open state to a closed state. At this time, the spherical valve 35, which has been restricted by the deformation of the elastic restricting member 40, is subjected to a downward force caused by the pressure difference between the inside and outside of the inner container 93, as well as a downward force caused by the elastic force generated by the elastic restricting member 40. This allows the spherical valve 35 to move stably downward. When the spherical valve 35 moves downward, a suck-back space LS is created in the upward direction relative to the spherical valve 35 inside the spherical valve cylinder 30. The suck-back space LS created by the movement of the spherical valve 35 temporarily has a lower pressure than the surrounding space, so the liquid contents L remaining inside the dispensing tube 21 are sucked back into the suck-back space LS. Because the spherical valve 35 moves stably downward in this way, the cap 10 can stably suck back the liquid contents L remaining inside the dispensing tube 21 into the suck-back space LS.

球状弁３５は、縮径部３１ｃに着座するまで移動する。なお、球状弁３５と球状弁用筒状部３１との間に液通路ＬＰのない状態が閉弁状態であるが、図４は閉弁状態のうち、球状弁３５が縮径部３１ｃに着座した状態を示している。この他に、本発明の実施の形態の場合は、ストレート部３１ａを球状弁３５が移動している状態も閉弁状態となる。 The spherical valve 35 moves until it seats on the reduced diameter portion 31c. Note that the closed valve state is when there is no liquid passage LP between the spherical valve 35 and the spherical valve cylindrical portion 31, and FIG. 4 shows the closed valve state in which the spherical valve 35 seats on the reduced diameter portion 31c. In addition, in the case of the embodiment of the present invention, the closed valve state is also when the spherical valve 35 is moving on the straight portion 31a.

次いで図５から図８を参照しながら、本発明の第２形態について説明する。第１形態では、移動弁体の一例として球状弁３５（球形状の弁体）について説明したが、第２形態では、抜け止め部および柱部を有する弁について説明する。本発明の第２形態は、キャップ本体１１と、Ｔ字弁用中栓１６とにより構成される。Ｔ字弁用中栓１６の基本的な構成は、本発明の第１形態の球状弁用中栓１５と同様である。球状弁用中栓１５と異なるのは、球状弁用筒状体３０の代わりに、それとは形状の異なるＴ字弁用筒状体５０（「筒状体」の一例）を使用し、球状弁３５の代わりに、それとは形状の異なるＴ字弁６０（「移動弁体」の一例）を使用している点である。なお、このように異なる点があるが、本発明の第２形態は、本発明の第１形態と、同様の弁の開閉動作を行う。 Next, the second embodiment of the present invention will be described with reference to Figs. 5 to 8. In the first embodiment, the spherical valve 35 (spherical valve body) was described as an example of a moving valve body, but in the second embodiment, a valve having a retaining portion and a column portion will be described. The second embodiment of the present invention is composed of a cap body 11 and a T-shaped valve plug 16. The basic structure of the T-shaped valve plug 16 is the same as that of the spherical valve plug 15 of the first embodiment of the present invention. The difference from the spherical valve plug 15 is that instead of the spherical valve cylindrical body 30, a T-shaped valve cylindrical body 50 (an example of a "cylindrical body") with a different shape is used, and instead of the spherical valve 35, a T-shaped valve 60 (an example of a "moving valve body") with a different shape is used. Although there are such differences, the second embodiment of the present invention performs the same valve opening and closing operation as the first embodiment of the present invention.

図５に示すように、Ｔ字弁用筒状体５０は、Ｔ字弁用筒状部５１と、Ｔ字弁用筒状部５１の外周部から径方向外向きに広がる支持部５２とにより構成される。Ｔ字弁用筒状部５１は、その内面である側壁部５１ａと、側壁部５１ａに容器９０側で接続される筒底部５１ｂとにより構成される。筒底部５１ｂには、Ｔ字弁用筒状部５１の軸心方向に向かって下開口５１ｃが形成されている。なお、その他の構成は、球状弁用筒状体３０と同様である。Ｔ字弁用筒状体５０は、下開口５１ｃが支持部５２に対して、容器９０側に向くようにキャップ本体１１に取り付けられる。 As shown in FIG. 5, the T-valve cylindrical body 50 is composed of a T-valve cylindrical portion 51 and a support portion 52 that extends radially outward from the outer periphery of the T-valve cylindrical portion 51. The T-valve cylindrical portion 51 is composed of a side wall portion 51a, which is its inner surface, and a cylindrical bottom portion 51b that is connected to the side wall portion 51a on the container 90 side. A lower opening 51c is formed in the cylindrical bottom portion 51b toward the axial direction of the T-valve cylindrical portion 51. The other configurations are the same as those of the spherical valve cylindrical body 30. The T-valve cylindrical body 50 is attached to the cap body 11 so that the lower opening 51c faces the container 90 side relative to the support portion 52.

図６に示すように、Ｔ字弁６０は、側壁部５１ａの内側に配置され、下開口５１ｃよりも大径で、Ｔ字弁６０が下開口５１ｃを通って容器９０側へ移動するのを規制する円板形状の抜け止め部６１と、抜け止め部６１の二つの対向する面のうちの一方の面からその軸心方向に向かって延び、下開口５１ｃを通る円柱状の柱部６２とにより構成される。このような構成であると、Ｔ字弁６０は、Ｔ字弁用筒状部５１の内面に沿って、その軸心方向に移動することができる。また柱部６２が下開口５１ｃを通るため、Ｔ字弁６０がＴ字弁用筒状部５１の軸心方向に移動する際には、柱部６２を下開口５１ｃが案内して、Ｔ字弁６０のＴ字弁用筒状部５１の径方向への移動を低減する。 As shown in FIG. 6, the T-shaped valve 60 is arranged inside the side wall portion 51a, and is composed of a disk-shaped retaining portion 61 that is larger in diameter than the lower opening 51c and restricts the T-shaped valve 60 from moving through the lower opening 51c toward the container 90, and a cylindrical column portion 62 that extends from one of the two opposing surfaces of the retaining portion 61 toward its axial direction and passes through the lower opening 51c. With this configuration, the T-shaped valve 60 can move in the axial direction along the inner surface of the T-shaped valve cylindrical portion 51. In addition, since the column portion 62 passes through the lower opening 51c, when the T-shaped valve 60 moves in the axial direction of the T-shaped valve cylindrical portion 51, the column portion 62 is guided by the lower opening 51c, reducing the radial movement of the T-shaped valve 60 through the T-shaped valve cylindrical portion 51.

一方で、柱部６２を下開口５１ｃに通すと、下開口５１ｃにおいて、液通路ＬＰの水平方向の断面積が小さくなり、柱部６２を備えない移動弁体を使用する場合と比較して、内容液Ｌの注出量が減少する。内容液Ｌの注出量の減少を低減するために、柱部６２は、側面から突出した状態で柱部６２の軸心方向に延びる柱部突起６２ａを有することが好ましく、柱部突起６２ａは、柱部６２の周方向に隙間を隔てて複数配置されることが好ましい。また、柱部突起６２ａは、下開口５１ｃの軸心方向長さよりも長いことが好ましく、柱部６２の上端から下端に至ることが好ましい。柱部６２が柱部突起６２ａを有することで、Ｔ字弁６０がＴ字弁用筒状部５１の軸心方向に移動する際に、柱部突起６２ａの外径と、下開口５１ｃの内径とにより、Ｔ字弁６０は案内される。よって、柱部突起６２ａの外径の大きさを下開口５１ｃの内径の大きさに合わせさえすれば、柱部６２の断面積を小さくすることが可能となる。このため、下開口５１ｃと柱部６２との間に生じる液通路ＬＰが、柱部突起６２ａが形成されていない場合よりも大きくなり、柱部６２を備えることによる内容液Ｌの注出量の減少を低減することができる。 On the other hand, when the column portion 62 is passed through the lower opening 51c, the horizontal cross-sectional area of the liquid passage LP at the lower opening 51c becomes smaller, and the amount of the liquid L poured out is reduced compared to when a moving valve body without the column portion 62 is used. In order to reduce the decrease in the amount of the liquid L poured out, it is preferable that the column portion 62 has a column portion protrusion 62a extending in the axial direction of the column portion 62 while protruding from the side, and it is preferable that the column portion protrusion 62a is arranged in a plurality of positions with gaps in the circumferential direction of the column portion 62. In addition, it is preferable that the column portion protrusion 62a is longer than the axial length of the lower opening 51c, and it is preferable that it reaches from the upper end to the lower end of the column portion 62. By having the column portion 62 have the column portion protrusion 62a, when the T-valve 60 moves in the axial direction of the T-valve tubular portion 51, the T-valve 60 is guided by the outer diameter of the column portion protrusion 62a and the inner diameter of the lower opening 51c. Therefore, as long as the outer diameter of the column protrusion 62a is matched to the inner diameter of the lower opening 51c, it is possible to reduce the cross-sectional area of the column 62. As a result, the liquid passage LP that is created between the lower opening 51c and the column 62 is larger than when the column protrusion 62a is not formed, and the reduction in the amount of the content liquid L that is dispensed due to the presence of the column 62 can be reduced.

図７に示すように、Ｔ字弁用筒状体５０は、筒底部５１ｂが、下開口５１ｃの縁で注出筒２１側に突出する筒底部側環状突起５３を有することが好ましく、Ｔ字弁６０は、抜け止め部６１が、その外縁で容器９０側に突出する抜け止め部側環状突起６３を有することが好ましい。このような構成であると、図８に示すように、筒底部５１ｂにＴ字弁６０が着座した際に、抜け止め部側環状突起６３の面と、その抜け止め部側環状突起６３と対向する筒底部側環状突起５３の面との間に液封空間Ｓが形成される。図６に示すように、液封空間Ｓを内容液Ｌが満たすことで、Ｔ字弁用筒状体５０は封止される。 As shown in FIG. 7, the T-valve cylindrical body 50 preferably has a cylinder bottom 51b with a cylinder bottom side annular protrusion 53 that protrudes toward the pouring cylinder 21 at the edge of the lower opening 51c, and the T-valve 60 preferably has a retaining portion 61 with a retaining portion side annular protrusion 63 that protrudes toward the container 90 at its outer edge. With this configuration, as shown in FIG. 8, when the T-valve 60 is seated on the cylinder bottom 51b, a liquid seal space S is formed between the surface of the retaining portion side annular protrusion 63 and the surface of the cylinder bottom side annular protrusion 53 that faces the retaining portion side annular protrusion 63. As shown in FIG. 6, the liquid seal space S is filled with the content liquid L, and the T-valve cylindrical body 50 is sealed.

以上、本発明の実施形態について説明したが、本発明を適用可能な形態は、上述の実施形態に限られるものではなく、移動弁体の移動が弾性規制部材により規制される際に、弾性規制部材が弾性変形を伴って、移動弁体の移動を規制するという本発明の趣旨を逸脱しない範囲で適宜変更を加えることができる。 Although the embodiments of the present invention have been described above, the forms to which the present invention can be applied are not limited to the above-mentioned embodiments, and appropriate modifications can be made within the scope of the invention, which is to restrict the movement of the moving valve body by elastic deformation of the elastic restriction member when the movement of the moving valve body is restricted by the elastic restriction member.

本発明の実施の形態では、キャップ１０が取りつく容器９０として、二重構造容器を例示したが、上記本発明の趣旨を逸脱しなければ、容器は二重構造とする必要はない。 In the embodiment of the present invention, a double-structure container is exemplified as the container 90 to which the cap 10 is attached, but the container does not need to have a double structure as long as it does not deviate from the spirit of the present invention.

図６に示す本発明の実施の形態のＴ字弁用筒状体５０にＴ字弁６０が着座した際に、抜け止め部側環状突起６３の側面が、筒底部側環状突起５３の側面と隙間を隔てて対向しており、それらの間の空間に液封空間Ｓが形成されていた。しかし、抜け止め部側環状突起６３の面と、その面と対向する筒底部側環状突起５３の面との間に液封空間Ｓが形成されるという本発明の趣旨を逸脱しない範囲で適宜変更を加えることができる。 When the T-valve 60 is seated in the T-valve cylindrical body 50 of the embodiment of the present invention shown in Figure 6, the side of the retaining portion side annular protrusion 63 faces the side of the cylinder bottom side annular protrusion 53 across a gap, and a liquid seal space S is formed in the space between them. However, appropriate modifications can be made within the scope of the present invention, which is to form a liquid seal space S between the surface of the retaining portion side annular protrusion 63 and the surface of the cylinder bottom side annular protrusion 53 that faces it.

１０キャップ
１１キャップ本体
１５球状弁用中栓
１６Ｔ字弁用中栓
２１注出筒
３０球状弁用筒状体
３１ｄ上開口
３１ｅ下開口
３２案内部
３５球状弁
４０弾性規制部材
４１規制部
４１ａ弾性傾斜部
４１ｂ連通口
４１ｃ弁体当接部
５０Ｔ字弁用筒状体
５１ｃ下開口
５３筒底部側環状突起
６０Ｔ字弁
６１抜け止め部
６２柱部
６２ａ柱部突起
６３抜け止め部側環状突起
９０容器
９１口部
Ｌ内容液
Ｓ液封空間 10 Cap 11 Cap body 15 Spherical valve inner plug 16 T-valve inner plug 21 Spout tube 30 Spherical valve cylindrical body 31d Upper opening 31e Lower opening 32 Guide portion 35 Spherical valve 40 Elastic regulating member 41 Regulating portion 41a Elastic inclined portion 41b Communication port 41c Valve body abutment portion 50 T-valve cylindrical body 51c Lower opening 53 Tube bottom side annular protrusion 60 T-valve 61 Slip-prevention portion 62 Column portion 62a Column portion protrusion 63 Slip-prevention portion side annular protrusion 90 Container 91 Mouth portion L Content liquid S Liquid-sealed space

Claims

A cap body that is attached to the mouth of the container;
and an inner plug disposed between the container and the cap body,
The cap body has a pouring tube for pouring out the liquid content of the container,
The inner plug,
A cylindrical body that communicates with the inside of the pouring tube and the inside of a container;
A movable valve body that moves between a pouring tube side and a container side inside the cylindrical body;
an elastic regulating member that regulates the movable valve body that has moved to the pouring tube side from coming out of the cylindrical body;
A space is formed between the cylindrical body and the movable valve body that has moved to the pouring tube side, and the cylindrical body is sealed by the movable valve body that has moved to the container side ,
The cylindrical body is
A side wall portion;
a tube bottom portion connected to the side wall portion on the container side and having an opening;
a cylindrical bottom side annular protrusion protruding toward the pouring cylinder at the edge of the opening of the cylindrical bottom;
having
The moving valve body,
a stopper portion that is disposed inside a side wall portion of the cylinder bottom portion, has a diameter larger than that of an opening of the cylinder bottom portion, and prevents the cylinder bottom portion from moving toward a container through the opening;
A retaining portion-side annular protrusion that protrudes toward the container from an outer edge of the retaining portion;
A column portion passing through the opening of the bottom of the cylinder;
having
a liquid-sealing space is formed between the cylinder bottom side annular protrusion and the retaining portion side annular protrusion of the movable valve body that has moved toward the container, the liquid being sealed by the content of the container;
The cap is characterized in that the elastic regulating member presses the movable valve body, which has moved to the pouring tube side, toward the container side by elastic force.

The cap according to claim 1, characterized in that the inside of the cylindrical body is arranged coaxially with the inside of the dispensing tube.

The cap according to claim 1 or 2, characterized in that the elastic regulating member has a communication port that connects the inside of the pouring tube with the inside of the cylindrical body.

A cap according to any one of claims 1 to 3, characterized in that the elastic regulating member has an elastic inclined portion that protrudes toward the container as it moves toward its center.

The elastic inclined portion has a contact portion with the moving valve body on the container side,
The cap according to claim 4 , wherein the contact portion restricts movement of the movable valve body.

The pillar part,
A protrusion is provided on a side surface of the column portion and extends in an axial direction of the column portion,
6. The cap according to claim 1 , wherein the columnar projections are arranged in a plurality of portions at intervals in the circumferential direction of the columnar portion.