JP2015027885A

JP2015027885A - Double container

Info

Publication number: JP2015027885A
Application number: JP2013247597A
Authority: JP
Inventors: 真弥星野; Maya Hoshino; 桑原　和仁; Kazuhito Kuwabara; 和仁桑原
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2013-06-28
Filing date: 2013-11-29
Publication date: 2015-02-12
Anticipated expiration: 2033-11-29
Also published as: JP6199168B2

Abstract

PROBLEM TO BE SOLVED: To provide a double container letting fluid taken in from an outside air introduction hole hardly flow to a depth side of an extraction plug or between an outer layer body and an inner layer body, and capable of achieving cost reduction.SOLUTION: A double container 1 includes: an inner layer body 20 performing volume-reducing deformation in the inside of an outer layer body 10; an inside plug 30 provided on the upper part of the inner layer body 20; a content nonreturn valve 40 provided on an extraction opening 34; and an extraction plug 50 having an outer peripheral wall 51 forming a ventilation passage T1 between a mouth peripheral wall 11 and an inner peripheral wall 36, and including an extraction pipe 54 and an outside air introduction hole 56 on a top wall 53. The content nonreturn valve 40 has an annular wall 41 dividing an internal space N communicated with the outside air introduction hole 56 between with the inner peripheral wall 36. The inside plug 30 has a connection passage T2 connecting the internal space N and the ventilation passage T1 between the top face of the inner peripheral wall 36 and the lower surface of the top wall 53, and at least one of the ventilation passage T1 and the connection passage T2 is provided with contraction for limiting air flow.

Description

本発明は、容器の外殻を形成する外層体と、外層体の内側に収められる減容変形自在な内層体とを備え、内容物の吐出に伴って内層体のみを減容させる二重容器に関するものであり、特に、外層体の胴部を押圧して内容物を注出させるスクイズタイプの二重容器に関する。 The present invention includes a double container that includes an outer layer body that forms an outer shell of a container, and a volume-reducing and deformable inner layer body that is housed inside the outer layer body, and reduces only the inner layer body as the contents are discharged. In particular, the present invention relates to a squeeze-type double container that presses the body portion of the outer layer body to pour out the contents.

化粧水などの化粧料や、シャンプーやリンス或いは液体石鹸、また食品調味料などを収納する容器としては、容器の外殻を形成するとともに内外に通じる貫通孔を設けた外層体と、外層体の内側に収められ減容変形自在な内層体と、外層体の口部に装着されるとともに外層体の貫通孔へつながる外気導入孔を有する注出栓を備え、注出栓から内容物を注出させるに伴い内層体のみを減容させるようにした二重容器（デラミ容器とも言う）が知られている。このような二重容器として、例えば特許文献１には、外層体の胴部を押圧することで、外層体と内層体との間の空気を介して内層体を押圧して内容物を注出させる、スクイズタイプの容器が示されている。 As a container for storing cosmetics such as lotion, shampoo, rinse, liquid soap, food seasoning, etc., an outer layer body that forms an outer shell of the container and has a through-hole leading to the inside and outside, and an outer layer body Equipped with an inner layer body that is housed inside and is capable of volume-reducing deformation, and a spout plug that is attached to the mouth of the outer layer body and has an outside air introduction hole that leads to a through-hole in the outer layer body. As a result, a double container (also referred to as a delamination container) in which only the inner layer body is reduced in volume is known. As such a double container, for example, in Patent Document 1, by pressing the body portion of the outer layer body, the inner layer body is pressed through the air between the outer layer body and the inner layer body, and the contents are poured out. A squeeze-type container is shown.

特開２０１１−３１９２１号公報JP 2011-31921 A

ところで、このような二重容器においては、注出後の外層体が復元する際に、外気導入孔付近に内容物等の液体が付着していると、この液体が外気導入孔から空気と一緒に注出栓の内側に吸引されてしまうことがある。そして、最終的に注出栓の奥側或いは外層体と内層体との相互間まで流れてしまうと、簡単には蒸発し難くなるため、雑菌等が繁殖してしまうおそれが懸念される。 By the way, in such a double container, when the outer layer body after pouring is restored, if liquid such as contents adheres to the vicinity of the outside air introduction hole, this liquid is mixed with air from the outside air introduction hole. May be sucked inside the spout. And if it finally flows to the back side of the spout or between the outer layer body and the inner layer body, it is difficult to evaporate easily, so there is a concern that germs and the like may propagate.

また、このような二重容器では、外層体の復元に伴って外気導入孔から空気を取り込む必要がある一方で、外層体を押圧する際は、外層体と内層体の間の空気が外気導入孔から漏れ出さないようにする必要がある。このため、通常時は外気導入孔を閉鎖し、外層体と内層体の間が減圧状態となると開放する空気用逆止弁を設けることが一般的である。しかし近年は、コスト削減を図るべく、従来と同等の性能は維持しつつ、これまで必須とされてきた部材を省略する取り組みが進められており、空気用逆止弁に対しても同様の取り組みが求められていた。 In addition, in such a double container, it is necessary to take in air from the outside air introduction hole as the outer layer body is restored. On the other hand, when the outer layer body is pressed, the air between the outer layer body and the inner layer body is introduced into the outside air. It is necessary not to leak from the hole. For this reason, it is common to provide an air check valve that normally closes the outside air introduction hole and opens when the pressure between the outer layer body and the inner layer body is reduced. However, in recent years, in order to reduce costs, efforts have been made to omit the previously required components while maintaining the same performance as before, and the same efforts have been made for air check valves. Was demanded.

本発明は、このような問題点を解決することを課題とするものであり、その目的は、外気導入孔から取り込まれた液体を、注出栓の奥側或いは外層体と内層体との相互間に流れにくくすることが可能であり、また、空気用逆止弁を省略しても、これまでと同等の性能を維持することが可能であってコスト削減を図ることができる、新たな二重容器を提案するところにある。 An object of the present invention is to solve such problems, and an object of the present invention is to allow the liquid taken in from the outside air introduction hole to flow into the back of the spout or between the outer layer body and the inner layer body. It is possible to make it difficult to flow in between, and even if the check valve for air is omitted, it is possible to maintain the same performance as before and to reduce costs. There is a place to propose a heavy container.

本発明は、口部周壁に貫通孔を有するとともに容器の外殻を形成する外層体と、
内容物の充填空間に通じる上部開口を有するとともに該外層体の内側に収められ該貫通孔から該外層体との相互間に導入される空気により減容変形する内層体と、
該上部開口を覆う天壁に該充填空間につながる注出開口を有するとともに、該天壁の縁部から起立する内周壁を備える中栓と、
該注出開口を閉鎖する一方、該外層体への押圧に伴う該充填空間への加圧にて該注出開口が開放する内容物用逆止弁と、
該口部周壁に係合保持されるとともに該口部周壁及び該内周壁との相互間で該貫通孔に連通する通気路を形成する外周壁を有し、該外周壁に連結する頂壁に、該注出開口からの内容物を注出する注出筒、及び該通気路に通じる外気導入孔を備える注出栓と、を備える二重容器であって、
前記内容物用逆止弁は、前記注出筒と前記外気導入孔との間に設けられるとともに、前記天壁と前記頂壁との間に延在して前記内周壁との相互間に該外気導入孔に通じる内部空間を区画する環状壁を有し、
前記中栓は、前記内周壁の上面と前記頂壁の下面との相互間に前記内部空間と前記通気路とをつなぐ接続路を有し、
該通気路及び接続路の少なくとも一方に、空気の流れを制限する絞りを設けた二重容器である。 The present invention comprises an outer layer body having a through hole in the peripheral wall of the mouth and forming an outer shell of the container;
An inner layer body that has an upper opening that leads to a filling space for contents and is housed inside the outer layer body and is reduced in volume by air introduced between the through hole and the outer layer body;
An inner plug having an outlet opening connected to the filling space on the top wall covering the upper opening and having an inner peripheral wall standing up from an edge of the top wall;
A check valve for contents that closes the pouring opening and opens the pouring opening by pressurizing the filling space with the pressing to the outer layer body;
An outer peripheral wall that is engaged with and held by the peripheral wall of the mouth and forms an air passage that communicates with the through hole between the peripheral wall of the mouth and the inner peripheral wall; A double container comprising: a dispensing cylinder that dispenses the contents from the dispensing opening; and a dispensing stopper that includes an outside air introduction hole that communicates with the ventilation path,
The content check valve is provided between the extraction tube and the outside air introduction hole, and extends between the top wall and the top wall and between the inner peripheral wall and the inner wall. Having an annular wall defining an internal space leading to the outside air introduction hole;
The inner plug has a connection path connecting the internal space and the ventilation path between the upper surface of the inner peripheral wall and the lower surface of the top wall,
The double container is provided with a restriction for restricting the flow of air in at least one of the ventilation path and the connection path.

前記絞りは、前記内周壁の外周面及び前記外周壁の内周面の少なくとも一方に設けた細溝とすることができる。 The diaphragm may be a narrow groove provided on at least one of the outer peripheral surface of the inner peripheral wall and the inner peripheral surface of the outer peripheral wall.

前記絞りは、前記内周壁の上面及び前記頂壁の下面の少なくとも一方に設けた細溝とすることができる。 The diaphragm may be a narrow groove provided in at least one of the upper surface of the inner peripheral wall and the lower surface of the top wall.

前記内周壁及び前記外周壁の一方は、他方に向けて突出する螺旋状の凸部を有することが好ましい。 One of the inner peripheral wall and the outer peripheral wall preferably has a spiral convex portion protruding toward the other.

前記注出栓は、前記外気導入孔と前記内周壁との間において前記頂壁の下面から突出する突起を有することが好ましい。 It is preferable that the spout tap has a protrusion protruding from the lower surface of the top wall between the outside air introduction hole and the inner peripheral wall.

前記中栓は、前記充填空間に向けて延在する筒状壁を有するとともに、該筒状壁内を外層体の姿勢変更に応じて移動する球状体を有することが好ましい。 The inner plug preferably has a cylindrical wall that extends toward the filling space and a spherical body that moves in the cylindrical wall in accordance with a change in the posture of the outer layer body.

また、本発明は、口部周壁に貫通孔を有するとともに容器の外殻を形成する外層体と、
内容物の充填空間に通じる上部開口を有するとともに該外層体の内側に収められ該貫通孔から該外層体との相互間に導入される空気により減容変形する内層体と、
該上部開口を覆う天壁から前記充填空間に向けて垂下するとともに該充填空間につながる注出開口を形成する筒体、該筒体内に移動可能に設けられ該筒体の下部に当接して該充填空間を閉鎖する球状体、及び該天壁の縁部から起立する内周壁を備える中栓と、
該口部周壁に係合保持されるとともに該口部周壁及び該内周壁との相互間で該貫通孔に連通する通気路を形成する外周壁を有し、該外周壁に連結する頂壁に、該注出開口からの内容物を注出する注出筒、及び該通気路に通じる外気導入孔を備える注出栓と、を備える二重容器であって、
前記中栓は、前記注出筒と前記外気導入孔との間で、前記天壁から起立して前記頂壁に嵌合し、前記内周壁との相互間に該外気導入孔に通じる内部空間を区画する筒壁を有するとともに、
前記内周壁の上面と前記頂壁の下面との相互間に前記内部空間と前記通気路とをつなぐ接続路を有し、
該通気路及び接続路の少なくとも一方に、空気の流れを制限する絞りを設けた二重容器である。 The present invention also includes an outer layer body having a through hole in the peripheral wall of the mouth and forming an outer shell of the container,
An inner layer body that has an upper opening that leads to a filling space for contents and is housed inside the outer layer body and is reduced in volume by air introduced between the through hole and the outer layer body;
A cylindrical body that hangs down from the top wall covering the upper opening toward the filling space and that forms a pouring opening connected to the filling space, is provided movably in the cylindrical body, abuts against the lower portion of the cylindrical body, and A spherical plug that closes the filling space, and an inner plug including an inner peripheral wall that stands up from an edge of the top wall;
An outer peripheral wall that is engaged with and held by the peripheral wall of the mouth and forms an air passage that communicates with the through hole between the peripheral wall of the mouth and the inner peripheral wall; A double container comprising: a dispensing cylinder that dispenses the contents from the dispensing opening; and a dispensing stopper that includes an outside air introduction hole that communicates with the ventilation path,
The inner plug stands between the top wall and the top wall between the dispensing tube and the outside air introduction hole, and communicates with the outside air introduction hole between the inner wall and the inner space. And having a cylindrical wall that partitions
A connection path connecting the internal space and the ventilation path between the upper surface of the inner peripheral wall and the lower surface of the top wall;
The double container is provided with a restriction for restricting the flow of air in at least one of the ventilation path and the connection path.

前記注出栓は、前記頂壁の下面から前記筒体の内側に向けて突出し、前記球状体の前記天壁側へ移動を制限する移動制限部を有することが好ましい。 It is preferable that the pouring tap has a movement restricting portion that protrudes from the lower surface of the top wall toward the inside of the cylinder and restricts movement of the spherical body toward the top wall.

本発明の二重容器は、内容物用逆止弁に設けた環状壁と中栓に設けた内周壁との相互間に、外気導入孔に通じる内部空間を区画し、この内部空間と通気路（外層体の口部周壁に設けた貫通孔につながっている）とをつなぐ接続路が、内周壁の上面と、注出栓の頂壁の下面の相互間に設けられている。すなわち、外気導入孔から液体が吸引されても、内部空間に一旦取り込んで溜めることができる上、接続路は内部空間の上方に位置しているので、注出栓の奥側或いは外層体と内層体との相互間への液体の浸入が有効に防止される。 The double container of the present invention defines an internal space leading to the outside air introduction hole between the annular wall provided in the check valve for contents and the inner peripheral wall provided in the inner plug, and this internal space and the air passage A connection path that connects (connected to a through hole provided in the peripheral wall of the mouth of the outer layer body) is provided between the upper surface of the inner peripheral wall and the lower surface of the top wall of the spout plug. That is, even if liquid is sucked from the outside air introduction hole, it can be once taken into and stored in the internal space, and the connection path is located above the internal space, so the back side of the spout or the outer layer body and the inner layer Infiltration of liquid between the body and the body is effectively prevented.

また、通気路及び接続路の少なくとも一方に、空気の流れを制限する絞りを設けているので、外層体と内層体との間の空気は、外層体を押圧しても容器内である程度保持され、空気用逆止弁無しでも内容物を注出することができる。ここで絞りは、内周壁の外周面及び外周壁の内周面の少なくとも一方に設けた細溝、又は内周壁の上面及び頂壁の下面の少なくとも一方に設けた細溝で構成することができる。 In addition, since a restriction for restricting the air flow is provided in at least one of the ventilation path and the connection path, the air between the outer layer body and the inner layer body is held to some extent in the container even when the outer layer body is pressed. The contents can be dispensed without an air check valve. Here, the diaphragm can be constituted by a narrow groove provided in at least one of the outer peripheral surface of the inner peripheral wall and the inner peripheral surface of the outer peripheral wall, or a narrow groove provided in at least one of the upper surface of the inner peripheral wall and the lower surface of the top wall. .

内周壁及び外周壁の一方に、他方に向けて突出する螺旋状の凸部を設ける場合は、通気路の延在長さをより長くすることができるので、外層体と内層体との間の空気が、外気導入孔からより漏れ出しにくくなる。 When one of the inner peripheral wall and the outer peripheral wall is provided with a spiral convex portion that protrudes toward the other, the extending length of the air passage can be made longer, so that there is a gap between the outer layer body and the inner layer body. Air becomes more difficult to leak from the outside air introduction hole.

注出栓に、外気導入孔と内周壁との間において、頂壁の下面から突出する突起を設ける場合は、外気導入孔から吸引された液体が、接続路に直接流れ込むことを防止できるので、注出栓の奥側或いは外層体と内層体との相互間への液体の浸入を、より確実に防ぐことができる。 When the protrusion is provided with a protrusion that protrudes from the bottom surface of the top wall between the outside air introduction hole and the inner peripheral wall, the liquid sucked from the outside air introduction hole can be prevented from flowing directly into the connection path. It is possible to more reliably prevent the liquid from entering the rear side of the spout or between the outer layer body and the inner layer body.

中栓に、充填空間に向けて延在する筒状壁を設けるとともに、筒状壁内を外層体の姿勢変更に応じて移動する球状体を設ける場合は、外層体を傾けて内容物を注出した後、外層体を元の起立姿勢に戻せば、球状体が充填空間に向けて移動することで、注出筒内の内容物を引き戻す（サクションバック）ことができるので、注出筒からの液だれが防止でき、使い勝手が良くなる。 If the inner plug is provided with a cylindrical wall extending toward the filling space and a spherical body that moves in accordance with the change in the attitude of the outer layer body in the cylindrical wall, the contents are poured by inclining the outer layer body. If the outer layer body is returned to the original standing posture after being taken out, the spherical body moves toward the filling space, so that the contents in the dispensing cylinder can be pulled back (suction back). This prevents dripping of liquid and improves usability.

本発明に従う二重容器の第１実施形態を示す断面図である。It is sectional drawing which shows 1st Embodiment of the double container according to this invention. 図１に示す二重容器の部分拡大断面図である。It is a partial expanded sectional view of the double container shown in FIG. （ａ）は、本発明に従う二重容器の第２実施形態を示す断面図であり、（ｂ）は図３（ａ）のＣ−Ｃ断面図である。(A) is sectional drawing which shows 2nd Embodiment of the double container according to this invention, (b) is CC sectional drawing of Fig.3 (a). （ａ）は、本発明に従う二重容器の第３実施形態を示す断面図であり、（ｂ）は図４（ａ）のＤ−Ｄ断面図である。(A) is sectional drawing which shows 3rd Embodiment of the double container according to this invention, (b) is DD sectional drawing of Fig.4 (a).

以下、図面を参照して、本発明をより具体的に説明する。
図１は、本発明に従う二重容器の第１実施形態を示す断面図であって、図２は、図１に示す二重容器の部分拡大断面図である。 Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a sectional view showing a first embodiment of a double container according to the present invention, and FIG. 2 is a partially enlarged sectional view of the double container shown in FIG.

図１において、符号１は、本発明の二重容器の第１実施形態を示す。二重容器１は、容器の外殻を形成する外層体１０と、外層体１０の内側に収められる内層体２０とを備えていて、その上部に中栓３０、内容物用逆止弁４０、注出栓５０、及び蓋体６０とを備えている。 In FIG. 1, the code | symbol 1 shows 1st Embodiment of the double container of this invention. The double container 1 includes an outer layer body 10 that forms an outer shell of the container, and an inner layer body 20 that is housed inside the outer layer body 10, and an inner stopper 30, a check valve 40 for contents, A pouring tap 50 and a lid 60 are provided.

本実施形態における二重容器１は、合成樹脂製の外層体１０と、外層体１０に対して相溶性が低い合成樹脂にて形成される内層体２０とを積層させたものであり、これらの合成樹脂素材を積層して形成したパリソンを、ブロー成形することによって得られたものである。また、図示は省略するが、外層体１０と内層体２０との間に、縦方向に延在して外層体１０と内層体２０とを部分的に接合する、１本或いは複数本の接着帯を設けてもよい。 The double container 1 in this embodiment is formed by laminating an outer layer body 10 made of a synthetic resin and an inner layer body 20 formed of a synthetic resin having low compatibility with the outer layer body 10. It is obtained by blow molding a parison formed by laminating synthetic resin materials. Although not shown, one or a plurality of adhesive bands that extend in the vertical direction between the outer layer body 10 and the inner layer body 20 and partially join the outer layer body 10 and the inner layer body 20 to each other. May be provided.

外層体１０は、円筒状の口部周壁１１に、復元自在な可撓性を有する胴部１２を連結するとともに、図示を省略した底部を胴部１２に連結したものである。口部周壁１１の外周面には雄ねじ部１３を設けている。また、口部周壁１１には、貫通孔１４を設けていて、更に、貫通孔１４を設けた外周面には、上下方向に雄ねじ部１３を切り欠く溝部１５を設けている。 The outer layer body 10 is formed by connecting a cylindrical portion 12 having a reversible and flexible body 12 to a cylindrical mouth peripheral wall 11 and connecting a bottom portion (not shown) to the body 12. A male screw portion 13 is provided on the outer peripheral surface of the mouth peripheral wall 11. In addition, a through hole 14 is provided in the mouth peripheral wall 11, and a groove portion 15 in which a male screw portion 13 is notched in the vertical direction is provided on the outer peripheral surface provided with the through hole 14.

内層体２０は、その内側に内容物を充填可能とする充填空間Ｓを形成するとともに、充填空間Ｓに通じる上部開口２１を有するものであり、積層された外層体１０から剥離させることで減容変形させることができる。 The inner layer body 20 has a filling space S that can be filled with the contents inside, and has an upper opening 21 that communicates with the filling space S. The inner layer body 20 is reduced in volume by being peeled from the laminated outer layer body 10. Can be deformed.

中栓３０は、内層体２０の上部開口２１を覆う天壁３１を有している。本実施形態では天壁３１に、充填空間Ｓに向けて延在する円筒状の筒状壁３２（充填空間Ｓ側の端部は充填空間Ｓに向けて縮径している）を設けていて、筒状壁３２内には、外層体１０の姿勢変更に応じてそれ自身の自重で移動する球状体Ｂを設けている。天壁３１には、筒状壁３２に隣接して上向き凸状となる段部３３を設けていて、この段部３３に、表裏を貫通する注出開口３４を設けている。また天壁３１の上面には、筒状壁３２及び段部３３を取り囲むとともに、これらとの相互間に内容物用逆止弁４０を嵌合保持する環状の嵌合壁３５を設けている。更に、嵌合壁３５の径方向外側には、天壁３１の縁部から起立する円筒状の内周壁３６を設けている。そして、天壁３１の下面には、内層体２０を挟み込んで外層体１０と当接する環状のシール壁３７を設けている。 The inner plug 30 has a top wall 31 that covers the upper opening 21 of the inner layer body 20. In the present embodiment, the top wall 31 is provided with a cylindrical tubular wall 32 extending toward the filling space S (the end on the filling space S side is reduced in diameter toward the filling space S). In the cylindrical wall 32, there is provided a spherical body B that moves by its own weight in accordance with a change in the posture of the outer layer body 10. The top wall 31 is provided with a stepped portion 33 that protrudes upward adjacent to the cylindrical wall 32, and the stepped portion 33 is provided with a pouring opening 34 that penetrates the front and back. In addition, an annular fitting wall 35 is provided on the top surface of the top wall 31 so as to surround the cylindrical wall 32 and the stepped portion 33 and to hold the contents check valve 40 therebetween. Furthermore, a cylindrical inner peripheral wall 36 that stands from the edge of the top wall 31 is provided on the radially outer side of the fitting wall 35. An annular seal wall 37 that is in contact with the outer layer body 10 with the inner layer body 20 interposed therebetween is provided on the lower surface of the top wall 31.

内周壁３６について、図２を参照しつつ詳細に説明すると、本実施形態において内周壁３６の外周面には、上下方向に延在する細溝３６ａが設けられている。また、内周壁３６の上面には、径方向に延在する細溝３６ｂ（細溝３６ａと同様の構成）が設けられている。 The inner peripheral wall 36 will be described in detail with reference to FIG. 2. In the present embodiment, the outer peripheral surface of the inner peripheral wall 36 is provided with a narrow groove 36a extending in the vertical direction. Further, on the upper surface of the inner peripheral wall 36, a narrow groove 36b (a configuration similar to the narrow groove 36a) extending in the radial direction is provided.

内容物用逆止弁４０は、その下部が、中栓３０の筒状壁３２、段部３３、及び嵌合壁３５に嵌合保持される環状壁４１を備えている。環状壁４１の径方向内側には、アーム４２を介して連結する板状の弁部４３を備えていて、弁部４３により注出開口３４を閉鎖している。また弁部４３は、筒状壁３２の上部開口の大部分も覆い隠しているが、その一部は常時開口している。本実施形態で内容物用逆止弁４０は、所謂３点弁の形態をなしているが、１点弁等、従前の他の形態の逆止弁を用いることができる。また、本実施形態で環状壁４１は円筒状であるが、角筒状でもよい。 The lower part of the content check valve 40 includes an annular wall 41 fitted and held by the cylindrical wall 32, the stepped portion 33, and the fitting wall 35 of the inner plug 30. On the radially inner side of the annular wall 41, a plate-like valve portion 43 connected via an arm 42 is provided, and the dispensing opening 34 is closed by the valve portion 43. Moreover, although the valve part 43 has also covered and covered most of the upper opening of the cylindrical wall 32, the part is always opening. In the present embodiment, the check valve 40 for contents is in the form of a so-called three-point valve, but other check valves of other forms such as a one-point valve can be used. In the present embodiment, the annular wall 41 has a cylindrical shape, but may have a rectangular tube shape.

注出栓５０は、口部周壁１１を取り囲む外周壁５１を連結していて、外周壁５１の内周面には、口部周壁１１の雄ねじ部１３に対応する雌ねじ部５２を設けている。また、外周壁５１の上部には、中栓３０及び内容物用逆止弁４０を覆い隠す頂壁５３を設けている。頂壁５３には、内容物用逆止弁４０の開放下にて充填空間Ｓ内の内容物を注出する注出筒５４を設けている。なお、注出筒５４は、頂壁５３の下方側にも延びていて、これにより弁部４３が過度に持ち上がった際のストッパーとしても機能している。また、頂壁５３の下面には、環状壁４１の上部を嵌合保持する同心二重配置となる一対の上部嵌合壁５５を設けている。更に、上部嵌合壁５５の径方向外側には、頂壁５３を貫通する外気導入孔５６を設けている。これにより、内周壁３６と環状壁４１との間には、天壁３１と頂壁５３とで挟まれるとともに外気導入孔５６が開口する内部空間Ｎが形成される。また、外気導入孔５６と内周壁３６との間において頂壁５３の下面には、内部空間Ｎに向けて突出する突起５７を設けている。 The spout 50 connects an outer peripheral wall 51 that surrounds the mouth peripheral wall 11, and an internal thread portion 52 corresponding to the external thread portion 13 of the mouth peripheral wall 11 is provided on the inner peripheral surface of the outer peripheral wall 51. In addition, a top wall 53 that covers the inner plug 30 and the content check valve 40 is provided on the upper portion of the outer peripheral wall 51. The top wall 53 is provided with a dispensing cylinder 54 for dispensing the contents in the filling space S under the opening of the contents check valve 40. Note that the dispensing cylinder 54 also extends to the lower side of the top wall 53, thereby functioning as a stopper when the valve portion 43 is excessively lifted. Further, on the lower surface of the top wall 53, a pair of upper fitting walls 55 are provided in a concentric double arrangement for fitting and holding the upper part of the annular wall 41. Furthermore, an outside air introduction hole 56 that penetrates the top wall 53 is provided on the radially outer side of the upper fitting wall 55. Thus, an internal space N is formed between the inner peripheral wall 36 and the annular wall 41 and is sandwiched between the top wall 31 and the top wall 53 and the outside air introduction hole 56 is opened. Further, a protrusion 57 that protrudes toward the internal space N is provided on the lower surface of the top wall 53 between the outside air introduction hole 56 and the inner peripheral wall 36.

ここで、外周壁５１について、図２を参照しつつ詳細に説明すると、本実施形態において外周壁５１の内周面上方には、内周壁３６に向けて吐出する螺旋状の凸部５１ａを設けている。また、外周壁５１の内周面における細溝３６ａとの近傍域は、細溝３６ａを除いて内周壁３６の外周面と当接し、頂壁５３の下面における細溝３６ｂとの近傍域は、細溝３６ｂを除いて内周壁３６の上面と当接している。このように構成することで、貫通孔１４と外気導入孔５６の間には、空気が流れる通路として、溝部１５及び細溝３６ａを経て螺旋状の凸部５１ａを通る通気路Ｔ１と、細溝３６ｂにて構成される接続路Ｔ２と、接続路Ｔ２と外気導入孔５６とをつなぐ内部空間Ｎが形成される。なお、図示は省略するが、内周壁３６の外周面には、上下方向に延在する凸リブを設けていて、中栓３０を注出栓５０に組み込むと、この凸リブが螺旋状の凸部５１ａに食い込むようにしている。これにより、中栓３０は注出栓５０に対して回り止め保持される。 Here, the outer peripheral wall 51 will be described in detail with reference to FIG. 2. In this embodiment, a spiral convex portion 51 a that discharges toward the inner peripheral wall 36 is provided above the inner peripheral surface of the outer peripheral wall 51. ing. Further, the area near the narrow groove 36a on the inner peripheral surface of the outer peripheral wall 51 is in contact with the outer peripheral surface of the inner peripheral wall 36 except for the narrow groove 36a, and the area near the narrow groove 36b on the lower surface of the top wall 53 is Except for the narrow groove 36b, it is in contact with the upper surface of the inner peripheral wall 36. With such a configuration, the air passage T1 passing through the spiral convex portion 51a through the groove 15 and the narrow groove 36a as a passage through which the air flows between the through hole 14 and the outside air introduction hole 56, and the narrow groove A connection path T2 configured by 36b and an internal space N connecting the connection path T2 and the outside air introduction hole 56 are formed. Although illustration is omitted, a convex rib extending in the vertical direction is provided on the outer peripheral surface of the inner peripheral wall 36, and when the inner plug 30 is incorporated into the pouring plug 50, the convex rib becomes a spiral convex. It bites into the part 51a. As a result, the inner plug 30 is retained against the pouring plug 50.

蓋体６０は、ヒンジ６１を介して注出栓５０の外周壁５１に連結していて、ヒンジ６１で折り曲げることで、注出筒５４及び外気導入孔５６を覆い隠すことができる。より詳細には、蓋体６０は、平板状の上壁６２と、上壁６２の縁部に連結するとともに外周壁５１に連なる形状となる蓋体周壁６３とを備えていて、上壁６２には、蓋体６０を閉めた際に注出筒５４の内側に入り込んで注出筒５４をシールする棒体６４を備えている。なお、蓋体６０は、ヒンジ６１を設けずに注出栓５０とは別体のものとし、ねじやアンダーカットで注出栓５０に装着するように構成してもよい。 The lid 60 is connected to the outer peripheral wall 51 of the spout 50 via a hinge 61, and can be obscured by the hinge 61 so as to cover the spout cylinder 54 and the outside air introduction hole 56. More specifically, the lid 60 includes a flat upper wall 62 and a lid peripheral wall 63 that is connected to the edge of the upper wall 62 and is continuous with the outer peripheral wall 51. Is provided with a rod body 64 that enters the inside of the pouring cylinder 54 and seals the pouring cylinder 54 when the lid 60 is closed. The lid 60 may be configured separately from the spout 50 without providing the hinge 61 and may be attached to the spout 50 with a screw or undercut.

上記のように構成される二重容器１から内容物を吐出するに当たっては、図１に示すように蓋体６０を開き、二重容器１を、起立姿勢から傾倒或いは倒立姿勢に姿勢変更する。これにより、筒状壁３２内の球状体Ｂは、自重にて、図１に破線で示す位置（注出筒５４側）に移動する。そして、外層体１０の胴部を押圧すると、内層体２０は、外層体１０と内層体２０との間の空気にて押圧されて充填空間Ｓが加圧される。これにより、加圧された内容物が弁部４３を持ち上げて、注出開口３４から内容物が流出し、注出筒５４から外界に注出される。ここで、貫通孔１４と外気導入孔５６の間は、通気路Ｔ１、接続路Ｔ２、内部空間Ｎにてつながっているため、常時開放された状態であるものの、細溝３６ａ及び細溝３６ｂの通路断面積（溝幅や溝深さ）は、通気路Ｔ１、接続路Ｔ２、及び内部空間Ｎの中で小さくなっていて絞りとして機能するため、外層体１０を押圧しても、外層体１０と内層体２０との間の空気はそれ程多く漏れ出すことはなく、内容物の注出機能は従来と同等に維持される。特に、本実施形態では、螺旋状の凸部を設けて通気路Ｔ１の延在長さを増しているので、空気の漏れ出しをより有効に阻止することができる。 In discharging the contents from the double container 1 configured as described above, the lid 60 is opened as shown in FIG. 1, and the posture of the double container 1 is changed from the standing posture to the tilted or inverted posture. Thereby, the spherical body B in the cylindrical wall 32 moves to the position shown by the broken line in FIG. When the body portion of the outer layer body 10 is pressed, the inner layer body 20 is pressed by the air between the outer layer body 10 and the inner layer body 20, and the filling space S is pressurized. As a result, the pressurized content lifts the valve portion 43, the content flows out from the dispensing opening 34, and is poured out from the dispensing tube 54 to the outside. Here, since the through hole 14 and the outside air introduction hole 56 are connected to each other through the ventilation path T1, the connection path T2, and the internal space N, they are always open, but the narrow grooves 36a and 36b Since the cross-sectional area (groove width and groove depth) of the passage is small in the ventilation path T1, the connection path T2, and the internal space N and functions as a throttle, the outer layer body 10 can be pressed even if the outer layer body 10 is pressed. The air between the inner layer body 20 and the inner layer body 20 does not leak so much, and the content pouring function is maintained at the same level as in the prior art. In particular, in the present embodiment, since the extending length of the air passage T1 is increased by providing a spiral convex portion, it is possible to more effectively prevent air leakage.

所要量の内容物を注出した後は、外層体１０の胴部への押圧を解除すると、充填空間Ｓ内の圧力が下がり、これに伴って弁部４３が注出開口３４を閉鎖するので、充填空間Ｓ内への外気の入り込みが有効に防止される。また、外層体１０は、それ自身の復元力により元の形状に戻ろうとするため、外層体１０と内層体２０との相互間は負圧状態となり、これによって、外気導入孔５６から内部空間Ｎ、接続路Ｔ２、通気路Ｔ１を経て、貫通孔１４より空気が導入され、内層体２０を減容させたまま外層体１０が復元する。なお、細溝３６ａ及び細溝３６ｂによって空気は流れにくくなっているものの、外層体１０の材質、厚み、形状等によって復元力を調整できる上、細溝３６ａ及び細溝３６ｂの通路断面積（溝幅や溝深さ）を絞りの機能を維持しつつ適宜調整することで、空気用逆止弁による場合と同等の時間で外層体１０を復元させることができる。すなわち、本願発明によれば、細溝の幅や深さ等を変更することで所期する性能が発揮されるので、より複雑な構造となる空気用逆止弁を用いる場合よりも調節が容易となる上、従来用いていた空気用逆止弁も不要となるので、コストを減らすこともできる。 After the required amount of content has been poured out, when the pressure on the body portion of the outer layer body 10 is released, the pressure in the filling space S decreases, and the valve portion 43 closes the dispensing opening 34 accordingly. Intrusion of outside air into the filling space S is effectively prevented. Further, since the outer layer body 10 tries to return to its original shape by its own restoring force, the outer layer body 10 and the inner layer body 20 are in a negative pressure state. The air is introduced from the through hole 14 through the connection path T2 and the ventilation path T1, and the outer layer body 10 is restored while the volume of the inner layer body 20 is reduced. Although the air does not easily flow due to the narrow grooves 36a and 36b, the restoring force can be adjusted by the material, thickness, shape, etc. of the outer layer body 10, and the cross-sectional areas (grooves) of the narrow grooves 36a and 36b can be adjusted. By appropriately adjusting the width and groove depth while maintaining the function of the throttle, the outer layer body 10 can be restored in a time equivalent to the case of using the check valve for air. In other words, according to the present invention, the desired performance is exhibited by changing the width and depth of the narrow groove, so that adjustment is easier than when using a check valve for air having a more complicated structure. In addition, since the air check valve used conventionally is not necessary, the cost can be reduced.

ここで、外気導入孔５６付近に液体が付着していると、空気と一緒に注出栓５０内に吸引されることがあるものの、吸引された液体は内部空間Ｎに一旦取り込まれることになり、また、接続路Ｔ２は、内部空間Ｎの上方に位置しているので、通気路Ｔ１への液体の流れ込みを有効に防止することができる。また、本実施形態では、頂壁５３の下面に突起５７を設けていて、突起５７が外気導入孔５６と接続路Ｔ２との間に入り込んだ状態になっているので、外気導入孔５６からの液体が直接的に接続路Ｔ２に流れ込むことが防止され、通気路Ｔ１への液体の流れ込みを、より確実に防ぐことができる。 Here, if the liquid adheres to the vicinity of the outside air introduction hole 56, it may be sucked into the spout 50 together with the air, but the sucked liquid is once taken into the internal space N. Moreover, since the connection path T2 is located above the internal space N, it is possible to effectively prevent the liquid from flowing into the ventilation path T1. In the present embodiment, the protrusion 57 is provided on the lower surface of the top wall 53, and the protrusion 57 enters between the outside air introduction hole 56 and the connection path T2. The liquid is prevented from flowing directly into the connection path T2, and the liquid can be prevented from flowing into the ventilation path T1 more reliably.

なお、内容物の注出後、二重容器１を起立姿勢に戻せば、球状体Ｂは、自重にて充填空間Ｓ側に移動する。これにより、注出筒５４内に残った内容物を注出栓５０内に引き込むことができるので、注出筒５４からの液だれを防止することができる。 In addition, if the double container 1 is returned to the standing posture after the contents are poured out, the spherical body B moves to the filling space S side by its own weight. As a result, the contents remaining in the pouring tube 54 can be drawn into the pouring plug 50, so that dripping from the pouring tube 54 can be prevented.

以下、本発明の他の実施形態について説明する。なお、先の第１実施形態と同一又は対応する構成については、同一の符号で表し、説明を省略する。 Hereinafter, other embodiments of the present invention will be described. In addition, about the structure which is the same as that of 1st Embodiment, or respond | corresponds, it represents with the same code | symbol and abbreviate | omits description.

図３（ａ）は、本発明に従う二重容器の第２実施形態を示す断面図であり、図３（ｂ）は、図３（ａ）の二重容器１００におけるＣ−Ｃ断面図である。二重容器１００は、容器の外殻を形成する外層体１０と、外層体１０の内側に収められる内層体２０とを備え、その上部に中栓３０、注出栓５０、及び蓋体６０とを備えている。 FIG. 3A is a cross-sectional view showing a second embodiment of the double container according to the present invention, and FIG. 3B is a cross-sectional view taken along the line C-C in the double container 100 of FIG. . The double container 100 includes an outer layer body 10 that forms an outer shell of the container, and an inner layer body 20 that is housed inside the outer layer body 10, and an inner plug 30, an outlet plug 50, and a lid body 60 are provided on the upper part thereof. It has.

外層体１０は、第１実施形態と同様に、口部周壁１１に、可撓性を有する胴部１２を連結するとともに、図示を省略した底部を胴部１２に連結したものであり、口部周壁１１の外周面には雄ねじ部１３を設けている。また、口部周壁１１には、貫通孔１４を設けるとともに、上下方向に雄ねじ部１３を切り欠く溝部１５を設けている。 As in the first embodiment, the outer layer body 10 is formed by connecting a flexible body portion 12 to the mouth peripheral wall 11 and connecting a bottom portion (not shown) to the body portion 12. A male screw portion 13 is provided on the outer peripheral surface of the peripheral wall 11. Further, the mouth peripheral wall 11 is provided with a through hole 14 and a groove portion 15 in which the male screw portion 13 is notched in the vertical direction.

本実施形態の中栓３０は、内層体２０の上部開口２１を覆う天壁３１に、充填空間Ｓに向けて垂下するとともに当該充填空間Ｓにつながる注出開口１３４を形成する円筒状の筒体１３２（充填空間Ｓ側の端部は充填空間Ｓに向けて縮径している）を設けており、当該筒体１３２の内部に球状体Ｂを移動可能に設けている。球状体Ｂは、筒体１３２の下部に当接して該充填空間Ｓを閉鎖する。筒体１３２の内周面上部には、軸線方向に延びる溝１３３が周方向に３箇所均等に形成されており、筒体１３２の上端部内周面には、球状体Ｂの抜け出しを防止する凸部１３５が、溝１３３に挟まれるように周方向に３箇所設けられている。ここで、筒体１３２の球状体Ｂは、所謂ボール弁を構成し、充填空間Ｓへ外気が流入するのを阻止するとともに、注出後に、後述する注出筒５４付近の内容物を引き込んで注出筒５４からの液垂れを防止することができる。 The inner plug 30 of the present embodiment is a cylindrical tube body that hangs down toward the filling space S on the top wall 31 that covers the upper opening 21 of the inner layer body 20 and forms a pouring opening 134 connected to the filling space S. 132 (the end on the filling space S side is reduced in diameter toward the filling space S), and the spherical body B is movably provided inside the cylindrical body 132. The spherical body B abuts on the lower part of the cylindrical body 132 and closes the filling space S. Three axially extending grooves 133 are formed in the circumferential direction at the upper part of the inner peripheral surface of the cylindrical body 132, and the convex portion that prevents the spherical body B from coming out is formed on the inner peripheral surface of the upper end portion of the cylindrical body 132. Three portions 135 are provided in the circumferential direction so as to be sandwiched between the grooves 133. Here, the spherical body B of the cylindrical body 132 constitutes a so-called ball valve, prevents outside air from flowing into the filling space S, and draws in the contents in the vicinity of the extraction cylinder 54 to be described later after extraction. Liquid dripping from the dispensing cylinder 54 can be prevented.

また、本実施形態の中栓３０は、天壁３１の縁部から起立する円筒状の内周壁３６、及び内周壁３６の内側で天壁３１から起立する筒壁１４１を有する。そして、天壁３１の下面には、内層体２０を挟み込んで外層体１０と当接する環状のシール壁３７を設けている。また、本実施形態の内周壁３６の外周面には、第１実施形態と同様に、上下方向に延在する細溝３６ａが設けられており、内周壁３６の上面には、径方向に延在する細溝３６ｂ（細溝３６ａと同様の構成）が設けられている。 Further, the inner plug 30 of the present embodiment includes a cylindrical inner peripheral wall 36 that rises from the edge of the top wall 31, and a cylindrical wall 141 that stands from the top wall 31 inside the inner peripheral wall 36. An annular seal wall 37 that is in contact with the outer layer body 10 with the inner layer body 20 interposed therebetween is provided on the lower surface of the top wall 31. Further, similarly to the first embodiment, a narrow groove 36a extending in the vertical direction is provided on the outer peripheral surface of the inner peripheral wall 36 of the present embodiment, and the upper surface of the inner peripheral wall 36 extends in the radial direction. An existing narrow groove 36b (same configuration as the narrow groove 36a) is provided.

注出栓５０は、外周壁５１及び頂壁５３を有し、頂壁５３には、注出開口１３４の開放下にて充填空間Ｓ内の内容物を注出する注出筒５４を設けている。また、頂壁５３の下面には、筒壁１４１の上部を嵌合保持する同心二重配置となる一対の上部嵌合壁５５を設けるとともに、上部嵌合壁５５の径方向外側に、頂壁５３を貫通する外気導入孔５６を設けている。これにより、内周壁３６と筒壁１４１との間には、天壁３１と頂壁５３とで挟まれるとともに外気導入孔５６が開口する内部空間Ｎが形成される。また、外気導入孔５６と内周壁３６との間において頂壁５３の下面には、内部空間Ｎに向けて突出する突起５７を設けている。 The spout 50 has an outer peripheral wall 51 and a top wall 53. The top wall 53 is provided with a spout cylinder 54 that spouts the contents in the filling space S under the opening of the spout opening 134. Yes. In addition, a pair of upper fitting walls 55 having a concentric double arrangement for fitting and holding the upper portion of the cylindrical wall 141 are provided on the lower surface of the top wall 53, and the top wall is disposed radially outside the upper fitting wall 55. An outside air introduction hole 56 penetrating 53 is provided. Thus, an internal space N is formed between the inner peripheral wall 36 and the cylindrical wall 141 and is sandwiched between the top wall 31 and the top wall 53 and the outside air introduction hole 56 is opened. Further, a protrusion 57 that protrudes toward the internal space N is provided on the lower surface of the top wall 53 between the outside air introduction hole 56 and the inner peripheral wall 36.

また、本実施形態の頂壁５３の下面には、筒体１３２の内側に向けて突出し、球状体Ｂの天壁３１側へ移動を制限する移動制限部としての突起部１５８が３本設けられている。本実施形態において、突起部１５８は、先端が内側に屈曲する薄板形状であり、３本の突起部１５８は筒体１３２の内周面から等距離に配置されている。 In addition, on the lower surface of the top wall 53 of the present embodiment, three protrusions 158 are provided as a movement restricting portion that protrudes toward the inside of the cylindrical body 132 and restricts the movement of the spherical body B toward the top wall 31. ing. In the present embodiment, the projecting portion 158 has a thin plate shape whose tip is bent inward, and the three projecting portions 158 are arranged at an equal distance from the inner peripheral surface of the cylindrical body 132.

外周壁５１の内周面上方には、第１実施形態と同様に、内周壁３６に向けて吐出する螺旋状の凸部５１ａを設けており、貫通孔１４と外気導入孔５６の間には、空気が流れる通路として、溝部１５及び細溝３６ａを経て螺旋状の凸部５１ａを通る通気路Ｔ１と、細溝３６ｂにて構成される接続路Ｔ２と、接続路Ｔ２と外気導入孔５６とをつなぐ内部空間Ｎが形成される。第１実施形態と同様に、中栓３０は内周壁３６の外周面に設けた凸リブにより注出栓５０に対して回り止め保持される。 Similar to the first embodiment, a spiral convex portion 51 a that discharges toward the inner peripheral wall 36 is provided above the inner peripheral surface of the outer peripheral wall 51, and between the through hole 14 and the outside air introduction hole 56. As a passage through which air flows, the air passage T1 passing through the spiral convex portion 51a through the groove 15 and the narrow groove 36a, the connection path T2 constituted by the narrow groove 36b, the connection path T2, and the outside air introduction hole 56 An internal space N connecting the two is formed. As in the first embodiment, the inner plug 30 is held against rotation with respect to the spout plug 50 by a convex rib provided on the outer peripheral surface of the inner peripheral wall 36.

蓋体６０は、第１実施形態と同様に、ヒンジ６１を介して注出栓５０の外周壁５１に連結していて、注出筒５４及び外気導入孔５６を覆い隠すことができる。蓋体６０は、ヒンジ６１を設けずに注出栓５０とは別体のものとし、ねじやアンダーカットで注出栓５０に装着するように構成してもよい。 Similarly to the first embodiment, the lid 60 is connected to the outer peripheral wall 51 of the spout 50 via the hinge 61 and can cover the spout cylinder 54 and the outside air introduction hole 56. The lid 60 may be separate from the pouring tap 50 without providing the hinge 61 and may be configured to be attached to the pouring tap 50 with a screw or undercut.

上記のように構成される二重容器１００から内容物を吐出するに当たっては、蓋体６０を開き、二重容器１００を起立姿勢から傾倒或いは倒立姿勢に姿勢変更するとともに外層体１０の胴部１２を押圧すると、充填空間Ｓが加圧される。これにより、加圧された内容物が球状体Ｂを持ち上げて、球状体Ｂは突起部１５８に接触する。ここで突起部１５８は、可撓性を有するため、球状体Ｂに押圧されて撓み変形（弾性変形）する。球状体Ｂが突起部１５８を撓み変形させながら、溝１３３の下端よりも上方に移動すると充填空間Ｓが開放され、内容物が注出開口１３４及び注出筒５４を通って外界に注出される。ここで、本実施形態では、細溝３６ａの通路断面積（溝幅や溝深さ）が細溝３６ｂよりも小さくなっていて、細溝３６ａが絞りとして機能するため、外層体１０を押圧しても、外層体１０と内層体２０との間の空気はそれ程多く漏れ出すことはなく、内容物の注出機能は従来と同等に維持される。なお、本実施形態の二重容器１００においても、細溝３６ｂの通路断面積を小さくして、細溝３６ｂを絞りとして機能させることも可能である。 In discharging the contents from the double container 100 configured as described above, the lid 60 is opened, the posture of the double container 100 is changed from the standing posture to the tilted or inverted posture, and the body portion 12 of the outer layer body 10 is changed. Is pressed, the filling space S is pressurized. As a result, the pressurized contents lift the spherical body B, and the spherical body B comes into contact with the protrusions 158. Here, since the projecting portion 158 has flexibility, it is pressed by the spherical body B to bend and deform (elastically deform). When the spherical body B moves upward from the lower end of the groove 133 while bending and deforming the projecting portion 158, the filling space S is opened, and the contents are poured out to the outside through the pouring opening 134 and the pouring cylinder 54. . Here, in this embodiment, the passage cross-sectional area (groove width and groove depth) of the narrow groove 36a is smaller than that of the narrow groove 36b, and the narrow groove 36a functions as an aperture, so that the outer layer body 10 is pressed. However, the air between the outer layer body 10 and the inner layer body 20 does not leak so much, and the content pouring function is maintained at the same level as the conventional one. In the double container 100 of this embodiment, it is also possible to reduce the passage cross-sectional area of the narrow groove 36b so that the narrow groove 36b functions as an aperture.

所要量の内容物を注出した後は、外層体１０の胴部への押圧を解除すると、充填空間Ｓ内の圧力が下がり、これに伴って球状体Ｂが下方に移動して注出開口１３４を閉鎖するので、充填空間Ｓ内への外気の入り込みが有効に防止される。また、本実施形態においては、移動制限部を可撓性の突起部１５８で形成したことで、撓み変形した突起部１５８の反発力を受けて、球状体Ｂは、より確実に、また、素早く下方に移動して注出開口１３４を閉鎖する。これにより、充填空間Ｓ内への外気の入り込みがより確実に防止される。また、球状体Ｂが筒体１３２内を下方（充填空間Ｓ側）に移動することで、注出筒５４内に残った内容物を注出栓５０の内部に引き込むことができるので、注出筒５４からの液だれを防止することができる。さらに、本実施形態では、中栓３０にボール弁となる構成を設けたことにより、逆支弁を別部材として形成する必要がなく、部品数を低減することができる。 After the required amount of content has been poured out, when the pressure on the body portion of the outer layer body 10 is released, the pressure in the filling space S decreases, and the spherical body B moves downward along with this, and the dispensing opening is opened. Since 134 is closed, entry of outside air into the filling space S is effectively prevented. Further, in the present embodiment, since the movement restricting portion is formed by the flexible protruding portion 158, the spherical body B receives the repulsive force of the deformed protruding portion 158 more reliably and quickly. Move downward and close the dispensing opening 134. As a result, entry of outside air into the filling space S is more reliably prevented. In addition, since the spherical body B moves downward (filling space S side) in the cylindrical body 132, the contents remaining in the extraction cylinder 54 can be drawn into the extraction stopper 50, so that the extraction is performed. The dripping from the cylinder 54 can be prevented. Furthermore, in this embodiment, by providing the inner plug 30 with a configuration that serves as a ball valve, it is not necessary to form a reverse support valve as a separate member, and the number of parts can be reduced.

ここで、図４（ａ）、（ｂ）は、本発明の第３実施形態としての二重容器２００を示しており、第２実施形態の二重容器１００と移動制限部の構成のみが異なるものである。第２実施形態では、移動制限部を、可撓性を有する３本の突起部１５８で構成していたが、本実施形態では、移動制限部を、部分的に切り欠かれた円筒形状の突出部２５８で構成している。突出部２５８は、第２実施形態の二重容器１００における突起部１５８に比べて剛性が高く、また、頂壁５３から下端までの長さが小さく設定されている。内容物を注出する際には、突出部２５８は撓み変形することなく球状体Ｂの上方への移動を制限することができる。 Here, Fig.4 (a), (b) has shown the double container 200 as 3rd Embodiment of this invention, and only the structure of the double container 100 of 2nd Embodiment and a movement restriction | limiting part differs. Is. In the second embodiment, the movement restricting portion is configured by the three projecting portions 158 having flexibility. However, in this embodiment, the movement restricting portion is formed by partially protruding the cylindrical protrusion. Part 258. The protrusion 258 has higher rigidity than the protrusion 158 in the double container 100 of the second embodiment, and the length from the top wall 53 to the lower end is set small. When the contents are poured out, the projecting portion 258 can limit the upward movement of the spherical body B without being deformed.

本発明に従う二重容器は、上述の実施形態に限定されるものではなく、特許請求の範囲に従う範囲で種々の変更が可能である。例えば、上述の実施形態では外層体１０に設けた溝部１５を通じて空気を貫通孔１４に導入するようにしたが、この溝部１５を設けずに、雄ねじ部１３と雌ねじ部５２との隙間を通して空気を導入するようにしてもよい。また、上述の実施形態では、２つの細溝３６ａ、３６ｂを設けたが、何れか一方であってもよい。また、細溝３６ａに代えて、通気路Ｔ１を構成する別の部位の通路断面積を狭くしてもよい。また細溝３６ａ、３６ｂは、内周壁３６に設けたが、外周壁５１に設けてもよく、また二つ割りにしてこれらの両方で構成してもよい。また螺旋状の凸部５１ａは、外周壁５１に設けたが、内周壁３６に設けても、また両方に設けてもよい。また、外層体及び内層体は、積層構造のパリソンをブロー成形することによって形成されるものに限られず、外層体及び内層体を個別に形成し、その後、内層体を外層体内に装着するようにしたものでもよい。 The double container according to the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope according to the claims. For example, in the above-described embodiment, air is introduced into the through hole 14 through the groove portion 15 provided in the outer layer body 10. However, air is not passed through the gap between the male screw portion 13 and the female screw portion 52 without providing the groove portion 15. You may make it introduce. In the above-described embodiment, the two narrow grooves 36a and 36b are provided, but either one may be provided. Moreover, it may replace with the narrow groove 36a and may narrow the channel | path cross-sectional area of another site | part which comprises the ventilation path T1. The narrow grooves 36a and 36b are provided on the inner peripheral wall 36, but may be provided on the outer peripheral wall 51, or may be divided into two parts. Moreover, although the helical convex part 51a was provided in the outer peripheral wall 51, it may be provided in the inner peripheral wall 36, or may be provided in both. Further, the outer layer body and the inner layer body are not limited to those formed by blow molding a parison having a laminated structure, and the outer layer body and the inner layer body are individually formed, and then the inner layer body is mounted in the outer layer body. You may have done.

本発明によれば、外気導入孔から取り込まれた液体が、注出栓の奥側或いは外層体と内層体との相互間に流れにくくなり、また、コスト削減も図ることができる、新規の二重容器を提供することが可能となる。 According to the present invention, it is difficult for the liquid taken in from the outside air introduction hole to flow in the back side of the spout or between the outer layer body and the inner layer body, and it is possible to reduce costs. A heavy container can be provided.

１二重容器
１０外層体
１１口部周壁
１２胴部
１３雄ねじ部
１４貫通孔
１５溝部
２０内層体
２１上部開口
３０中栓
３１天壁
３２筒状壁
３３段部
３４注出開口
３５嵌合壁
３６内周壁
３６ａ細溝（絞り）
３６ｂ細溝（絞り）
３７シール壁
４０内容物用逆止弁
４１環状壁
４２アーム
４３弁部
５０注出栓
５１外周壁
５１ａ螺旋状の凸部
５２雌ねじ部
５３頂壁
５４注出筒
５５上部嵌合壁
５６外気導入孔
５７突起
６０蓋体
６１ヒンジ
６２上壁
６３蓋体周壁
６４棒体
１３２筒体
１３３溝
１３５凸部
１４１筒壁
１５８突起部（移動制限部）
２５８突出部（移動制限部）
Ｂ球状体
Ｎ内部空間
Ｓ充填空間
Ｔ１通気路
Ｔ２接続路 DESCRIPTION OF SYMBOLS 1 Double container 10 Outer layer body 11 Opening part peripheral wall 12 Body part 13 Male thread part 14 Through-hole 15 Groove part 20 Inner layer body 21 Upper opening 30 Middle plug 31 Top wall 32 Cylindrical wall 33 Step part 34 Outlet opening 35 Fitting wall 36 Inner wall 36a Narrow groove (diaphragm)
36b Narrow groove (diaphragm)
37 Seal Wall 40 Check Valve for Contents 41 Annular Wall 42 Arm 43 Valve Part 50 Outlet 51 Outer Wall 51a Spiral Convex Part 52 Female Thread Part 53 Top Wall 54 Outlet Cylinder 55 Upper Fitting Wall 56 Outside Air Introducing Hole 57 Protrusion 60 Lid 61 Hinge 62 Upper wall 63 Lid peripheral wall 64 Rod body 132 Cylindrical body 133 Groove 135 Protruding part 141 Cylindrical wall 158 Protruding part (movement restricting part)
258 Protruding part (movement restriction part)
B Spherical body N Internal space S Filling space T1 Ventilation path T2 Connection path

Claims

口部周壁に貫通孔を有するとともに容器の外殻を形成する外層体と、
内容物の充填空間に通じる上部開口を有するとともに該外層体の内側に収められ該貫通孔から該外層体との相互間に導入される空気により減容変形する内層体と、
該上部開口を覆う天壁に該充填空間につながる注出開口を有するとともに、該天壁の縁部から起立する内周壁を備える中栓と、
該注出開口を閉鎖する一方、該外層体への押圧に伴う該充填空間への加圧にて該注出開口が開放する内容物用逆止弁と、
該口部周壁に係合保持されるとともに該口部周壁及び該内周壁との相互間で該貫通孔に連通する通気路を形成する外周壁を有し、該外周壁に連結する頂壁に、該注出開口からの内容物を注出する注出筒、及び該通気路に通じる外気導入孔を備える注出栓と、を備える二重容器であって、
前記内容物用逆止弁は、前記注出筒と前記外気導入孔との間に設けられるとともに、前記天壁と前記頂壁との間に延在して前記内周壁との相互間に該外気導入孔に通じる内部空間を区画する環状壁を有し、
前記中栓は、前記内周壁の上面と前記頂壁の下面との相互間に前記内部空間と前記通気路とをつなぐ接続路を有し、
該通気路及び接続路の少なくとも一方に、空気の流れを制限する絞りを設けた二重容器。 An outer layer body having a through hole in the peripheral wall of the mouth and forming an outer shell of the container;
An inner layer body that has an upper opening that leads to a filling space for contents and is housed inside the outer layer body and is reduced in volume by air introduced between the through hole and the outer layer body;
An inner plug having an outlet opening connected to the filling space on the top wall covering the upper opening and having an inner peripheral wall standing up from an edge of the top wall;
A check valve for contents that closes the pouring opening and opens the pouring opening by pressurizing the filling space with the pressing to the outer layer body;
An outer peripheral wall that is engaged with and held by the peripheral wall of the mouth and forms an air passage that communicates with the through hole between the peripheral wall of the mouth and the inner peripheral wall; A double container comprising: a dispensing cylinder that dispenses the contents from the dispensing opening; and a dispensing stopper that includes an outside air introduction hole that communicates with the ventilation path,
The content check valve is provided between the extraction tube and the outside air introduction hole, and extends between the top wall and the top wall and between the inner peripheral wall and the inner wall. Having an annular wall defining an internal space leading to the outside air introduction hole;
The inner plug has a connection path connecting the internal space and the ventilation path between the upper surface of the inner peripheral wall and the lower surface of the top wall,
A double container provided with a throttle for restricting the flow of air in at least one of the ventilation path and the connection path.

前記絞りは、前記内周壁の外周面及び前記外周壁の内周面の少なくとも一方に設けた細溝である請求項１に記載の二重容器。 2. The double container according to claim 1, wherein the throttle is a narrow groove provided in at least one of an outer peripheral surface of the inner peripheral wall and an inner peripheral surface of the outer peripheral wall.

前記絞りは、前記内周壁の上面及び前記頂壁の下面の少なくとも一方に設けた細溝である請求項１又は２に記載の二重容器。 The double container according to claim 1 or 2, wherein the throttle is a narrow groove provided in at least one of an upper surface of the inner peripheral wall and a lower surface of the top wall.

前記内周壁及び前記外周壁の一方は、他方に向けて突出する螺旋状の凸部を有する請求項１〜３の何れかに記載の二重容器。 The double container according to any one of claims 1 to 3, wherein one of the inner peripheral wall and the outer peripheral wall has a spiral convex portion protruding toward the other.

前記注出栓は、前記外気導入孔と前記内周壁との間において前記頂壁の下面から突出する突起を有する請求項１〜４の何れかに記載の二重容器。 The double container according to any one of claims 1 to 4, wherein the spout has a protrusion protruding from the lower surface of the top wall between the outside air introduction hole and the inner peripheral wall.

前記中栓は、前記充填空間に向けて延在する筒状壁を有するとともに、該筒状壁内を外層体の姿勢変更に応じて移動する球状体を有する請求項１〜５の何れかに記載の二重容器。 The inner plug has a cylindrical wall extending toward the filling space and a spherical body that moves in the cylindrical wall in accordance with a change in the posture of the outer layer body. Double container as described.

口部周壁に貫通孔を有するとともに容器の外殻を形成する外層体と、
内容物の充填空間に通じる上部開口を有するとともに該外層体の内側に収められ該貫通孔から該外層体との相互間に導入される空気により減容変形する内層体と、
該上部開口を覆う天壁から前記充填空間に向けて垂下するとともに該充填空間につながる注出開口を形成する筒体、該筒体内に移動可能に設けられ該筒体の下部に当接して該充填空間を閉鎖する球状体、及び該天壁の縁部から起立する内周壁を備える中栓と、
該口部周壁に係合保持されるとともに該口部周壁及び該内周壁との相互間で該貫通孔に連通する通気路を形成する外周壁を有し、該外周壁に連結する頂壁に、該注出開口からの内容物を注出する注出筒、及び該通気路に通じる外気導入孔を備える注出栓と、を備える二重容器であって、
前記中栓は、前記注出筒と前記外気導入孔との間で、前記天壁から起立して前記頂壁に嵌合し、前記内周壁との相互間に該外気導入孔に通じる内部空間を区画する筒壁を有するとともに、
前記内周壁の上面と前記頂壁の下面との相互間に前記内部空間と前記通気路とをつなぐ接続路を有し、
該通気路及び接続路の少なくとも一方に、空気の流れを制限する絞りを設けた二重容器。 An outer layer body having a through hole in the peripheral wall of the mouth and forming an outer shell of the container;
An inner layer body that has an upper opening that leads to a filling space for contents and is housed inside the outer layer body and is reduced in volume by air introduced between the through hole and the outer layer body;
A cylindrical body that hangs down from the top wall covering the upper opening toward the filling space and that forms a pouring opening connected to the filling space, is provided movably in the cylindrical body, abuts against the lower portion of the cylindrical body, and A spherical plug that closes the filling space, and an inner plug including an inner peripheral wall that stands up from an edge of the top wall;
An outer peripheral wall that is engaged with and held by the peripheral wall of the mouth and forms an air passage that communicates with the through hole between the peripheral wall of the mouth and the inner peripheral wall; A double container comprising: a dispensing cylinder that dispenses the contents from the dispensing opening; and a dispensing stopper that includes an outside air introduction hole that communicates with the ventilation path,
The inner plug stands between the top wall and the top wall between the dispensing tube and the outside air introduction hole, and communicates with the outside air introduction hole between the inner wall and the inner space. And having a cylindrical wall that partitions
A connection path connecting the internal space and the ventilation path between the upper surface of the inner peripheral wall and the lower surface of the top wall;
A double container provided with a throttle for restricting the flow of air in at least one of the ventilation path and the connection path.

前記注出栓は、前記頂壁の下面から前記筒体の内側に向けて突出し、前記球状体の前記天壁側へ移動を制限する移動制限部を有する、請求項７に記載の二重容器。 The double container according to claim 7, wherein the spout tap protrudes from the lower surface of the top wall toward the inside of the cylindrical body and has a movement restricting portion that restricts movement of the spherical body toward the top wall. .