JP3574778B2

JP3574778B2 - Liquid container stopper device

Info

Publication number: JP3574778B2
Application number: JP2000242472A
Authority: JP
Inventors: 久雄高波
Original assignee: パール金属株式会社
Priority date: 2000-08-10
Filing date: 2000-08-10
Publication date: 2004-10-06
Anticipated expiration: 2020-08-10
Also published as: JP2002051919A

Description

【０００１】
【産業上の利用分野】
本発明は、主として携帯用に使用される液体容器の栓装置に関するものである。
【０００２】
【従来技術及び発明が解決しようとする課題】
携帯用液体容器等に採用されている栓装置は、従前から種々の構造のものが提案されている。基本的には、内部に流出通路を設けると共に、流出通路入口に開閉弁機構を設け、栓装置の外部からの操作で前記開閉機構を操作するようにしている。
【０００３】
ところで、前記栓装置を備えた携帯用の液体容器は、その使用の都度洗浄がなされるもので、内部の特に流出通路の洗浄が煩雑である。このため従前より、流出通路の洗浄が容易となる構造が提案されている。具体的には、栓体を内栓体と外栓体の内外二重構造とし、内栓体に開閉弁機構と短い流出通路を設け、内栓体を外栓体に組み込んだ際に両栓体の内外壁間を流出通路としたり、内栓体を更に操作機構部分と、弁部分とに上下二分し、外栓体に上下から内栓体を組み込み、これを容器体の開口部に装着したり、前記弁部分を外栓体に組み込んだりする構造を採用している（特許第２５００６５０号、同第２６３８５１９号、同第２８４５１５７号）。
【０００４】
前記のように栓体を内外二重体としたり、上下分割構造とした場合には、洗浄後の組立などは、洗浄を担当する主婦にとって非常に面倒な作業であり、部品を紛失したり、誤って組み立てる虞もある。このため栓装置を液体容器から外しただけで、流出通路の入口を解放できる栓装置が提案されている。即ち登録実用新案第３０４０７０８号公報及び特開２０００−１４５７３号公報に開示されているように、弁部分を閉塞作用のスプリングの付勢力に抗して引っ張り出し、更に回動して流出通路入口を露出させると共に、弁軸の突出部分を弁軸孔の縁部に引っ掛けて、閉塞方向（軸方向）への付勢力で当該解放状態を維持させている。
【０００５】
しかし前記した弁部の回動による流出通路入口の開放手段は、開閉用スプリングを、通常の開閉以上に強く引っ張ったり、或いは圧縮状態とするもので、洗浄作業中、スプリングに過剰の負担が加わることになる。このような過剰負担は、スプリングの付勢力の減衰を招き、弁の閉塞能力が低下してしまい、製品寿命を短くする虞がある。しかも栓装置の洗浄に際しては、装置に対して多方向からの力が加わることになる。このため前記の従前装置では、僅かなきっかけで、弁体が回動復帰し、弁体を閉塞状態としてしまい、必ずしも洗浄作業が容易であるとはいえない。
【０００６】
そこで本発明は、特に弁体を回動するなど流出通路入口を露出させた際に、弁体が不用意に動作しないようにして、確実な洗浄作業を行うことのできる栓装置を提案したものである
【０００７】
【課題を解決する手段】
本発明に係る液体容器の栓装置は、液体容器の開口部に装着される栓体で、内部に流出通路を備えると共に、流出通路入口を開閉する弁部並びに弁部の開閉操作機構を備え、弁部が流出通路入口位置から横方にずれて流出通路入口を解放した位置で、前記弁部の当該位置での保持機能並びに復帰阻止機能を有する移行機構を備えてなることを特徴とするものである。
【０００８】
液体容器の開口部に栓体を装着し、流出通路入口を弁部による開閉によって収納液体の注ぎ出し並びに流出防止の所謂栓機能を備え、特に栓装置を液体容器から外し、弁部を横方向に移動させて流出通路を露出させると、流出通路内の洗浄が容易に実施できる。而も弁部を横方向に移動させた際に、復帰阻止機能が働くことで、洗浄作業時の不用意な弁部の移動がなく、確実な洗浄作業を行うことがてきる。
【０００９】
【実施の形態】
次に本発明の実施の形態について説明する。実施形態に示した栓装置は、栓本体を構成するキャップ１及び本体２、弁開閉操作機構を構成するキャップ１、釦体３、回転駒４及びスプリング５、弁機構並びに移行機構を構成する本体２及び弁体６とで構成される。
【００１０】
キャップ１は本体２と組み合わせて栓体を構成するもので、後述する流出通路２１の出口（注ぎ口）を形成する庇部１１と、栓体の中心からずれた位置に弁操作機構用の孔部１２とを備え、孔部１２の内周壁１３に、弁開閉操作機構を構成する傾斜ガイド縁並びに釦体ガイド溝を形成してなる。以下孔部１２の中心位置を「弁中心」と定義する。
【００１１】
本体２は、内外二重筒体で、内側筒部２２が液体容器Ａの開口部に挿入され、外側筒部２３は、液体容器Ａの開口部外周を被冠すると共に、螺合装着できる構造としてなり、内側筒部２２の下方部分には、液体容器Ａの開口部内壁に密着する栓パッキン２４を付設してなる。尚栓パッキン２４は、弁機構の弁座も兼ねる。
【００１２】
更に栓体の中心からずれた位置で、栓体中心からみて弁中心と反対側となる位置に流出通路２１を設け、弁中心に弁棒ガイド孔２５を設けてなる。特に弁棒ガイド孔２５は、上下で内径を相違させ、上部内周面には、１８０度の対面位置に後述する突出部６３の幅と対応する嵌合溝２６を弁開閉ストロークと同程度の長さに設け、下部内径は、突出部６３が自由に回動できる大きさにしてなり、上下部境界箇所の内周面に、前記嵌合溝２６に突出部６３を誘導する傾斜縁部２７を設けてなる。
【００１３】
弁操作機構を構成する釦体３及び回転駒４は、孔部１２に下方より挿入されて装着されるもので、釦体３は、内周壁１３の傾斜ガイド縁と対応する傾斜下縁３１並びに釦体ガイド溝に嵌合する嵌合突部３２を設けてなる。回転駒４は、釦体３に内装され、傾斜ガイド縁に当接する突部４１を設けると共に、内側に後述する弁体６の弁棒先端との連結部（弁棒の回転が自在である連結構造）４２を設けてなる。
【００１４】
スプリング５は、回転駒４と本体２の弁棒ガイド孔２５の外周部分（本体の底面内側）に介装してなる。
【００１５】
弁体６は、栓パッキン２４を弁座とする弁部６１と、弁中心に設けた弁棒６２を備えると共に、弁棒６２は弁棒ガイド孔２５に挿通して先端を連結部４２と連結し、弁棒６２における弁部６１の近傍外周面に、弁部６１による弁開閉ストロークの間は、嵌合溝２６に嵌合状態となる突出部６３を設けてなる。
【００１６】
而して前記の栓装置は、一体に組み上げられた状態で液体容器Ａの開口部に螺合装着されて使用されるもので、従前の周知の弁開閉操作機構と同様に、釦体３の押圧操作で、順次回転駒４が奥方位置、上方位置で保持されて、弁体６の上下動作がなされ、弁の開閉がなされる。
【００１７】
ところで栓体の洗浄に際しては、栓装置を液体容器から外して行うもので、外した状態では、弁部６１が弁座（栓パッキン）２４に密着しているため、流出通路２１の入口が塞がれている。更に釦体３を操作して弁開放状態としても、流出通路の入口は共に狭く、内部洗浄がし難い。本発明では、一旦弁開閉機構を動作させて、弁を開放状態とし、更に弁部６１を把持して開放方向に僅かに引き出すと、突出部６３が嵌合溝２６から離脱するので、弁体６は、弁中心を中心軸として容易に回動できる。
【００１８】
そこで弁体６を回動すると、弁中心と円形弁部の中心が相違するので、流出通路２１の入口から弁部６１が横方に移行されることになり、入口が露出し、更に１８０度回動して弁体６の把持を開放すると、スプリング５の付勢力で、突出部６３が嵌合溝２６に嵌り込んで安定する。
【００１９】
従って、多少の力（洗浄操作時に栓体が受ける力）では、弁体６が流出通路２１を塞ぐような虞が全くなく、弁体６が安定した状態で流出通路２１内の洗浄ができたものである。
【００２０】
更に前記実施形態では、弁座を栓パッキンとし、弁部を円形としたものであるから、前記の弁部移行状態では、液体容器開口部への栓装置の装着ができないので、洗浄後も誤って液体容器に装着される虞がない利点もある。
【００２１】
また突出部６３と嵌合溝２６の関係は、弁体を１８０度しっかりと回動させなくとも、弁体６を開閉状態から釦体３を操作して閉塞状態に移行させると、スプリング５の付勢力で、突出部６３が傾斜縁部２７に添って自ら回動しながら嵌合溝２６に入り込むものである。
【００２２】
従って弁体６の弁部６１が流出通路２１を塞いだ状態か、或いは開口した状態の何れかに安定するので、取り扱いに便利である利点がある。
【００２３】
更に前記傾斜縁部２７自体が回動復帰阻止機構として作用するので、特に弁体６を閉鎖状態とせずに、そのまま開放状態のままであっても、安定洗浄は可能である。
【００２４】
尚前記実施形態では、通常の弁開閉操作中は、突出部６３が嵌合溝２６から離脱しない範囲としたため、洗浄時の弁体回動に際して、スプリングに通常の開閉操作時よりも負担をかけるが、一時的なものであるのであまり問題とはならない。勿論嵌合溝を短くして、弁閉塞状態のまま回動可能としても良い。但しその場合でも傾斜縁部２７を突出部６３が越えて移動する際には、スプリング５の付勢力を一時的に越える必要がある。従ってこの傾斜縁部の山越動作が復帰阻止機能ともなる。
【００２５】
更に本発明は、前記実施形態に限定されるものではなく、流出通路の開閉弁が横移行機能を備えて、流出通路の入り口が露出するものであれば良く、栓体の全体構成も液体容器への螺合装着に限定されるものではないし、弁の開閉操作も所謂前記のノック方式に限定されず、レバー操作によるものでも良い。
【００２６】
【発明の効果】
以上のとおり本発明は、液体容器の開口部に装着される栓体で、内部に流出通路を備えると共に、流出通路入口を開閉する弁部に、開閉操作機構の他に流出通路入口位置から横方にずれた位置での保持機能及び復帰阻止機能を備えた移行機構をも付加した栓装置で、液体容器から取り外した栓装置を、移行機構によって弁部を横方向に移動させて流出通路を露出させると、流出通路内の洗浄が容易に実施できるものである。
【図面の簡単な説明】
【図１】本発明の実施形態の分解斜視図。
【図２】同装置全体の一部切断した斜視図。
【図３】同断面図。
【図４】同移行機構操作時の断面図。
【図５】同装置全体の下方斜視図で（イ）は通常時（ロ）は洗浄時を示す。
【図６】同弁棒ガイド孔の説明断面図。
【図７】同突出部の説明図。
【符号の説明】
１キャップ
１１庇部
１２孔部
１３内周壁
２本体
２１流出通路
２２内側筒部
２３外側筒部
２４栓パッキン（弁座）
２５弁棒ガイド孔
２６嵌合溝
２７傾斜縁部
３釦体
３１傾斜下縁
３２嵌合突部
４回転駒
４１突部
４２連結部
５スプリング
６弁体
６１弁部
６２弁棒
６３突出部[0001]
[Industrial applications]
The present invention relates to a stopper device for a liquid container used mainly for carrying.
[0002]
2. Prior Art and Problems to be Solved by the Invention
2. Description of the Related Art Various types of stopper devices have been proposed for stopper devices used in portable liquid containers and the like. Basically, an outflow passage is provided inside, and an opening / closing valve mechanism is provided at the entrance of the outflow passage, so that the opening / closing mechanism is operated by an operation from outside the plug device.
[0003]
By the way, the portable liquid container provided with the stopper device is cleaned every time the liquid container is used, and it is complicated to clean the inside, particularly the outflow passage. For this reason, a structure has been proposed in which the outflow passage is easily cleaned. Specifically, the plug has an inner / outer dual structure of an inner plug and an outer plug, and the inner plug is provided with an on-off valve mechanism and a short outflow passage. An outflow passage is formed between the inner and outer walls of the body, and the inner plug is further divided into upper and lower parts into an operation mechanism part and a valve part. The inner plug is incorporated into the outer plug from above and below, and this is attached to the opening of the container body Or a structure in which the valve portion is incorporated into an outer plug body (Japanese Patent Nos. 2500650, 2638519, and 2845157).
[0004]
If the plug is made of an inner / outer double body or a vertically split structure as described above, assembling after cleaning is very troublesome work for the housewife in charge of cleaning, and parts may be lost or mistaken. There is also a risk of assembling. For this reason, there has been proposed a stopper device which can release the inlet of the outflow passage simply by removing the stopper device from the liquid container. That is, as disclosed in Registered Utility Model No. 30 4 0708 and JP 2000-14573, JP-pulled against the valve part the biasing force of the spring of the closing action, the outlet channel further rotated In addition to exposing the inlet, the protruding portion of the valve stem is hooked on the edge of the valve stem hole, and the released state is maintained by the urging force in the closing direction (axial direction).
[0005]
However, the opening means of the outflow passage entrance by the rotation of the valve portion pulls or opens the opening / closing spring more strongly than usual opening / closing, or an excessive load is applied to the spring during the cleaning operation. Will be. Such an excessive load may cause a decrease in the urging force of the spring, which may reduce the closing ability of the valve and shorten the life of the product. In addition, when the stopper device is cleaned, forces from multiple directions are applied to the device. For this reason, in the above-described conventional apparatus, the valve body is returned to the rotation by a slight trigger, and the valve body is closed, so that it cannot be said that the cleaning operation is always easy.
[0006]
Therefore, the present invention proposes a plug device that can perform a reliable cleaning operation by preventing the valve body from being carelessly operated particularly when the outlet of the outflow passage is exposed by rotating the valve body. [0007]
[Means to solve the problem]
The stopper device for a liquid container according to the present invention is a stopper attached to the opening of the liquid container, including an outflow passage therein, and a valve unit for opening and closing an outlet passage inlet and an opening and closing operation mechanism for the valve unit, In a position where the valve portion is shifted laterally from the outlet passage inlet position to release the outlet passage inlet, a shift mechanism having a function of holding the valve portion at that position and a function of preventing return is provided. It is.
[0008]
A plug is attached to the opening of the liquid container, and the outlet of the outflow passage is provided with a so-called plug function of pouring out and outflow of stored liquid by opening and closing by a valve. When the outlet passage is moved to expose the outflow passage, the inside of the outflow passage can be easily cleaned. In addition, when the valve portion is moved in the lateral direction, the return preventing function works, so that the valve portion is not inadvertently moved during the cleaning operation, and the cleaning operation can be performed reliably.
[0009]
Embodiment
Next, an embodiment of the present invention will be described. The plug device shown in the embodiment is a cap 1 and a main body 2 that constitute a plug main body, a cap 1 that constitutes a valve opening / closing operation mechanism, a button body 3, a rotary piece 4 and a spring 5, a body that constitutes a valve mechanism and a transition mechanism. 2 and the valve element 6.
[0010]
The cap 1 forms a plug in combination with the main body 2, and includes an eave portion 11 forming an outlet (a spout) of an outflow passage 21, which will be described later, and a hole for a valve operating mechanism at a position offset from the center of the plug. And an inclined guide edge and a button body guide groove which constitute a valve opening / closing operation mechanism are formed on an inner peripheral wall 13 of the hole portion 12. Hereinafter, the center position of the hole 12 is defined as “valve center”.
[0011]
The main body 2 is an inner / outer double cylindrical body. The inner cylindrical portion 22 is inserted into the opening of the liquid container A, and the outer cylindrical portion 23 covers the outer periphery of the opening of the liquid container A and can be screwed together. In the lower part of the inner cylindrical portion 22, a plug packing 24 that is in close contact with the inner wall of the opening of the liquid container A is attached. The plug packing 24 also serves as a valve seat of a valve mechanism.
[0012]
Further, at a position deviated from the center of the plug, the outflow passage 21 is provided at a position opposite to the valve center when viewed from the center of the plug, and a valve stem guide hole 25 is provided at the center of the valve. In particular, the inner diameter of the valve stem guide hole 25 is made different in the upper and lower portions, and a fitting groove 26 corresponding to the width of a projecting portion 63 to be described later is formed on the upper inner peripheral surface at a facing position of 180 degrees, which is approximately the same as the valve opening / closing stroke. The inner diameter of the lower portion is set so that the protruding portion 63 can freely rotate, and the inclined edge 27 for guiding the protruding portion 63 into the fitting groove 26 is provided on the inner peripheral surface at the boundary between the upper and lower portions. Is provided.
[0013]
The button body 3 and the rotating piece 4 that constitute the valve operating mechanism are inserted into the hole 12 from below and mounted. The button body 3 includes an inclined lower edge 31 corresponding to the inclined guide edge of the inner peripheral wall 13 and A fitting projection 32 is provided to fit into the button body guide groove. The rotating piece 4 is provided inside the button body 3, has a projection 41 abutting on the inclined guide edge, and has a connection part (a connection part that allows the rotation of the valve rod) with a valve rod tip of the valve element 6 described later inside. Structure) 42 is provided.
[0014]
The spring 5 is interposed between the rotary piece 4 and the outer periphery of the valve stem guide hole 25 of the main body 2 (inside the bottom surface of the main body).
[0015]
The valve body 6 includes a valve portion 61 having the plug packing 24 as a valve seat, and a valve stem 62 provided at the center of the valve. The valve stem 62 is inserted into the valve stem guide hole 25 to connect the distal end to the connecting portion 42. On the outer peripheral surface of the valve rod 62 in the vicinity of the valve portion 61, a protruding portion 63 that is fitted in the fitting groove 26 during the valve opening / closing stroke by the valve portion 61 is provided.
[0016]
The stopper device is used by being screwed and attached to the opening of the liquid container A in a state of being integrally assembled. Like the well-known conventional valve opening / closing operation mechanism, the button body 3 By the pressing operation, the rotating piece 4 is sequentially held at the back position and the upper position, the up and down movement of the valve body 6 is performed, and the valve is opened and closed.
[0017]
When the plug is washed, the plug device is removed from the liquid container. When the plug is removed, the valve portion 61 is in close contact with the valve seat (plug packing) 24. It is broken. Further, even when the button body 3 is operated to open the valve, the inlets of the outflow passages are both narrow, and it is difficult to clean the inside. In the present invention, once the valve opening / closing mechanism is operated to open the valve, and when the valve portion 61 is gripped and slightly pulled out in the opening direction, the protruding portion 63 separates from the fitting groove 26. 6 can easily rotate around the valve center as a central axis.
[0018]
Then, when the valve body 6 is rotated, the center of the valve and the center of the circular valve portion are different, so that the valve portion 61 is shifted laterally from the entrance of the outflow passage 21, the entrance is exposed, and further 180 degrees When the valve body 6 is rotated to release the grip, the projecting portion 63 is fitted into the fitting groove 26 and stabilized by the urging force of the spring 5.
[0019]
Therefore, with a slight force (force received by the plug during the cleaning operation), there is no possibility that the valve 6 blocks the outflow passage 21, and the inside of the outflow passage 21 can be cleaned with the valve 6 stable. Things.
[0020]
Further, in the above embodiment, since the valve seat is made of a plug packing and the valve portion is made circular, in the above-mentioned valve portion transition state, the plug device cannot be attached to the opening of the liquid container, so that even after cleaning, there is an error. There is also an advantage that there is no risk of being attached to the liquid container.
[0021]
Further, the relationship between the protruding portion 63 and the fitting groove 26 is such that when the valve body 6 is shifted from the open / closed state to the closed state by operating the button body 3 without firmly rotating the valve body by 180 degrees, the spring 5 The projecting portion 63 enters the fitting groove 26 while rotating itself along the inclined edge 27 by the urging force.
[0022]
Therefore, since the valve portion 61 of the valve element 6 is stabilized in a state where the outflow passage 21 is closed or in an opened state, there is an advantage that the handling is convenient.
[0023]
Further, since the inclined edge 27 itself functions as a rotation return preventing mechanism, stable cleaning is possible even if the valve body 6 is left open without being closed.
[0024]
In the above-described embodiment, during the normal valve opening / closing operation, the projection 63 is set so as not to be detached from the fitting groove 26. Therefore, when rotating the valve body at the time of cleaning, a load is applied to the spring more than during the normal opening / closing operation. However, it is not a problem because it is temporary. Of course, the fitting groove may be shortened so as to be rotatable with the valve closed. However, even in this case, the urging force of the spring 5 must be temporarily exceeded when the protrusion 63 moves beyond the inclined edge 27. Therefore, the hill-over action of the inclined edge also serves as a return preventing function.
[0025]
Further, the present invention is not limited to the above-described embodiment, and it is sufficient that the opening / closing valve of the outflow passage has a lateral shift function and the entrance of the outflow passage is exposed, and the entire structure of the stopper is also a liquid container. The opening and closing operation of the valve is not limited to the so-called knock method, but may be a lever operation.
[0026]
【The invention's effect】
As described above, the present invention provides a plug attached to an opening of a liquid container, which has an outflow passage therein, and a valve portion for opening and closing the outflow passage entrance, in addition to the opening / closing operation mechanism, being laterally located from the outflow passage entrance position. A stopper device that also has a transfer mechanism with a holding function at a position deviated to the side and a return prevention function.The stopper device removed from the liquid container is moved laterally by the transfer mechanism to move the valve part to the outflow passage. When exposed, the inside of the outflow passage can be easily cleaned.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an embodiment of the present invention.
FIG. 2 is a partially cutaway perspective view of the entire apparatus.
FIG. 3 is a sectional view of the same.
FIG. 4 is a cross-sectional view when the transfer mechanism is operated.
FIG. 5 is a lower perspective view of the entire apparatus, wherein (a) shows a normal state (b) and a cleaning state.
FIG. 6 is an explanatory sectional view of the valve stem guide hole.
FIG. 7 is an explanatory view of the protrusion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cap 11 Eave part 12 Hole part 13 Inner peripheral wall 2 Main body 21 Outflow passage 22 Inner cylinder part 23 Outer cylinder part 24 Plug packing (valve seat)
25 Valve stem guide hole 26 Fitting groove 27 Inclined edge 3 Button body 31 Inclined lower edge 32 Fitting projection 4 Rotating piece 41 Projection 42 Connecting part 5 Spring 6 Valve body 61 Valve part 62 Valve stem 63 Projection

Claims

液体容器の開口部に装着される栓体で、栓体内部における平面偏心位置に流出通路を備えると共に、前記流出通路入口を開閉する弁部並びに前記弁部の開閉操作機構を備え、流出通路から外れた位置に弁部の開閉操作に従動する弁棒を弁部と一体に設けた弁体を採用し、弁部近傍部分の弁棒外周に突出部を形成すると共に、弁棒が挿通される開閉操作用の弁棒ガイド孔の内周面に、弁閉塞位置における弁体の正常位置と、弁体が流出通路入口から横にずれた離脱位置とに、前記突出部と嵌合する嵌合溝を設け、弁解放位置では、突出部を嵌合溝から離脱させた状態で弁体を回動可能に設けて、弁部が流出通路入口から横方にずれた位置での保持機能並びに復帰阻止機能を有する移行機構を備えてなることを特徴とする液体容器の栓装置。A plug attached to the opening of the liquid container, including an outflow passage at a plane eccentric position inside the plug, a valve unit for opening and closing the outflow passage inlet, and an opening / closing operation mechanism for the valve unit. The valve body is provided with a valve stem that follows the opening and closing operation of the valve unit at a disengaged position and is integrally provided with the valve unit. A protruding portion is formed on the outer periphery of the valve stem near the valve unit, and the valve stem is inserted. The inner peripheral surface of the valve stem guide hole for opening and closing operation, the normal position of the valve body at the valve closed position, and the disengagement position where the valve body is shifted laterally from the outflow passage entrance, fits with the protrusion. A groove is provided, and at the valve release position, the valve body is rotatably provided with the protruding portion detached from the fitting groove, and a holding function and return at a position where the valve portion is laterally shifted from the inlet of the outflow passage. A stopper device for a liquid container, comprising a transfer mechanism having a blocking function.

弁部を流出通路入口からずらした状態では、栓装置を液体容器に装着できないずらし位置で保持並びに回動復帰阻止がなされる請求項１記載の液体容器の栓装置。2. The liquid container stopper device according to claim 1, wherein when the valve portion is displaced from the inlet of the outflow passage, the stopper device is held at a displaced position where the stopper device cannot be mounted on the liquid container and the rotation return is prevented.

弁棒ガイド孔を上下で内径を相違させ、上部内周面に弁閉塞位置における弁体の正常位置と、弁体が流出通路入口から横にずれた離脱位置にそれぞれ設けた嵌合溝を１８０度の対面とし、且つ下部内径を突出部が自由に回動できる大きさに形成すると共に、前記上下部境界箇所の内周面に、嵌合溝突出部を誘導する傾斜縁部を設けてなる請求項１記載の液体容器の栓装置The inner diameter of the valve stem guide hole is made different between the upper and lower sides, and fitting grooves provided in the upper inner peripheral surface at the normal position of the valve body at the valve closed position and at the detached position where the valve body is shifted laterally from the outflow passage entrance are provided. The lower inner diameter is formed to be large enough to allow the protrusion to freely rotate, and an inclined edge for guiding the fitting groove protrusion is provided on the inner peripheral surface at the boundary between the upper and lower parts. The stopper device for a liquid container according to claim 1.