JP3620040B2

JP3620040B2 - Liquid container stopper

Info

Publication number: JP3620040B2
Application number: JP34119099A
Authority: JP
Inventors: 康弘古和; 敬司大野; 育男三浦
Original assignee: Thermos KK
Current assignee: Thermos KK
Priority date: 1999-11-30
Filing date: 1999-11-30
Publication date: 2005-02-16
Anticipated expiration: 2019-11-30
Also published as: JP2001149236A

Description

【０００１】
【発明の属する技術分野】
本発明は、魔法瓶等の液体容器の栓体に関する。
【０００２】
【従来の技術】
近年、水筒や魔法瓶等の液体を収納して携行される液体容器の栓体として、容器本体の開口部に栓体を装着したままで注げるようにした、いわゆる、ワンタッチ栓と呼ばれるものが広く使用されている。このワンタッチ栓は、例えば、特開平９−２１５６１０号公報に開示されているように、内筒部と外筒部とからなり、内筒部上部に形成した流出口と外筒部下部に形成した流入口とを連通した液流路を内筒部と外筒部の間に設けた栓本体と、該栓本体の上面に配されたプッシュボタンの下方への押圧により連動して上下動する弁棒と、該弁棒の先端に前記液流路の流入口を開閉するよう設けた弁体と、前記プッシュボタンと連結して、弁体の開閉と同期して前記液流路の流出口を開閉作動するフラップとで構成されている。
【０００３】
【発明が解決しようとする課題】
しかし、上述の構成では、液流路を開閉する弁体を、栓本体の上面に配されたプッシュボタンにて上下動させるため、開閉操作機構が縦方向になり、栓体全体の高さが高くなる。また、液流路を開くときに、弁体を容器本体内方へ動かすため、容器本体内の液体の温度が高い等の理由から圧力が外部より高い場合、開操作に力を要する。
【０００４】
そこで本発明は、栓体全体の高さを低くするとともに、開閉操作が容易な液体容器の栓体を提供することを目的としている。
【０００５】
【課題を解決するための手段】
上記した目的を達成するため、本発明の液体容器の栓体は、容器本体開口部に着脱自在に取り付けられる有底筒状の外栓と、該外栓の上部に上下方向にヒンジ回動可能に設けられて外栓の上部開口を開閉する内栓と、該内栓を前記外栓に閉状態に係止する係止部材とを有し、前記外栓は、その底壁に液通孔を穿設して、該底壁から上部開口の間を液流路とし、前記内栓は、前記液通孔を上方から密閉するシール部材を備え、前記係止部材は、前記内栓の側壁から突出して前記外栓の内周壁に係合する係止爪を有し、前記内栓の上面に係止爪突出方向に往復動可能に設けられていることを特徴としている。
【０００６】
【発明の実施の形態】
以下、本発明を、図面に示す実施形態例に基づいて、さらに詳細に説明する。魔法瓶等の液体容器の栓体１は、容器本体２の開口部に着脱自在に取り付けられる外栓３と、該外栓３の上部に上下方向にヒンジ回動可能に設けられて外栓３の上部開口を開閉する内栓４と、該内栓４を前記外栓３に閉状態に係止する係止部材５とを有している。
【０００７】
前記外栓３は、有底筒状に形成された栓体部３１と、該栓体部３１を組み付けた容器本体２への取付部３２とからなり、栓体部３１を容器本体２の開口部内に挿入して、取付部３２内周に形成されたネジ部３３を容器本体２の首部外周のネジ部２１に螺合することにより容器本体２の開口部に取り付けられる。前記取付部３２の上部一側に、前記内栓４が水平方向の支軸６にて上下方向にヒンジ回動可能に取り付けられている。これにより、栓体１は、支軸６と径方向に対向する側が注ぎ口になる。
【０００８】
前記栓体部３１は、その底壁３４を支軸６側から注ぎ口側へ低くなるよう傾斜して形成され、該底壁３４の低い方に液通孔３５を、高い方に空気孔３６をそれぞれ穿設して、該底壁３４から上部開口の間を液流路３７としている。また、栓体部３１の下部外周には、外栓３を容器本体２に取り付けたときに、容器本体２の開口部内周壁下部の段部２２に密着するリング状のシール部材３８が備えられている。
【０００９】
前記内栓４は、有底筒状に形成された栓体部４１と、該栓体部４１の上部開口を覆う蓋部４２とからなり、栓体部４１は、胴部４３と底壁４４とを有し、胴部４３の外周にはシール部材取付用の溝４５が周設されている。底壁４４は、前記外栓３の底壁３４に対応して傾斜して形成されており、その下面には、前記液通孔３５と前記空気孔３６にそれぞれ対応する位置にシール部材取付用の突起４６，４７が形成されている。液通孔３５に対応する突起４６には空気抜き孔４６ａが穿設されている。また、蓋部４２にも、外部へ開口する空気抜き孔４２ａが形成されている。
【００１０】
また、前記栓体部４１には、エラストマー等の弾性体からなるシール部材７が設けられている。このシール部材７は、前記内栓４を閉じたときに、前記液通孔３５を上方から密閉する流入口シール部７１と、前記空気孔３６を上方から密閉する空気孔シール部７２と、前記外栓３の上部開口近傍内周壁に密着する流出口シール部７３とを一体に形成したもので、流入口シール部７１を前記突起４６に、空気孔シール部７２を前記突起４７にそれぞれ外嵌し、舌片７４を前記溝４５に嵌合して栓体部４１に取り付けられる。流入口シール部７１は、突起４６との間に空洞部７５を形成して設けられる。なお、本実施形態例では一体型のシール部材を用いたが、流入口シール部７１、空気孔シール部７２及び流出口シール部７３はそれぞれ別部品でもよい。
【００１１】
前記蓋部４２の上面には、前記係止部材５が設けられている。該係止部材５は、前記栓体部４１の注ぎ口側外周壁から突出して前記外栓３の取付部３２上部の注ぎ口側内周壁に形成した係合穴３９に係合する係止爪５２を有し、該係止爪５２の突出方向、すなわち、支軸６から注ぎ口方向に往復動可能に設けられ、蓋部４２の側壁との間に縮設されたコイルスプリング５１により常時注ぎ口方向へ付勢されている。また、上面には、操作部５３を隆起形成している。
【００１２】
この係止部材５は、外栓３の上部開口を内栓４で閉じた際に、係止爪５２が前記係合穴３９と係合して内栓４を閉状態に保持する。また、操作部５３を前記コイルスプリング５１の付勢力に抗して支軸６側へ動かすことにより、係止爪５２が前記栓体部４１内に引き込まれて前記係合穴３９との係合を解除する。支軸６には、内栓４を常時開方向（上方）に付勢するトーションスプリング６１が設けられ、このトーションスプリング６１の付勢力によって内栓４は上方に回動して開く。この内栓４は、図１に示されるように、支軸６を中心として閉状態から約１８０度開き、容器本体２を傾けて液体を注ぐ際には、トーションスプリング６１の付勢力によって内栓４の閉方向への回動が規制され開状態を維持する。
【００１３】
このように、栓体１は、外栓３の底壁３４に形成した液通孔３５を、上下方向に回動する内栓４の流入口シール部７１で上方から塞ぐ構成であるから、底壁３４から上部開口間の寸法を短くでき、内栓４を開く係止部材５の操作が、容器本体２の径方向である支軸６から注ぎ口方向、すなわち、横方向であることと相俟って、栓体１全体の高さを従来よりも低くできる。また、内栓４が上方へ回動して開く構成であるから、容器本体内の圧力が外部より高い場合でも、内栓４を容易に開くことができる。さらに、流入口シール部７１内側の空洞部７５が大気と連通しているから閉じる操作も容易である。
【００１４】
【発明の効果】
以上説明したように、本発明の液体容器の栓体は、容器本体開口部に着脱自在に取り付けられる有底筒状の外栓の底壁に液通孔を穿設して、底壁から上部開口の間を液流路とし、この外栓の上部に上下方向にヒンジ回動可能に設けられて外栓の上部開口を開閉する内栓に液通孔を上方から密閉するシール部材を設け、内栓の上面に、内栓の側壁から突出して外栓の内周壁に係合することにより内栓を閉状態に保持する係止爪を備えた係止部材を係止爪突出方向に往復動可能に設けたので、外栓の底壁から上部開口間の寸法を短くできるとともに、内栓を開く係止部材の操作が横方向であるから、栓体全体の高さを従来よりも低くできる。これにより、栓体が取り付けられる容器本体首部を短くして容器本体をコンパクトにすることが可能となる。また、内栓が上方へ回動して開くから、容器本体内の圧力が外部より高い場合でも、内栓を容易に開くことができる。
【図面の簡単な説明】
【図１】本発明の栓体を開いた状態の断面図
【図２】同じく閉じた状態の断面図
【図３】係止部材を支軸方向へ移動させた状態の断面図
【図４】栓体を開いた状態の一部切り欠き平面図
【図５】栓体を開いた状態の斜視図
【符号の説明】
１…栓体、２…容器本体、３…外栓、３１…栓体部、３２…取付部、３４…底壁、３５…液通孔、３７…液流路、３９…係合穴、４…内栓、４１…栓体部、４３…胴部、４４…底壁、５…係止部材、５２…係止爪、５３…操作部、６…支軸、７…シール部材、７１…流入口シール部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stopper for a liquid container such as a thermos.
[0002]
[Prior art]
In recent years, a so-called one-touch plug, which can be poured with the stopper attached to the opening of the container body, has been widely used as a stopper for liquid containers that are stored and carried such as water bottles and thermos bottles. Has been. For example, as disclosed in Japanese Patent Application Laid-Open No. 9-215610, this one-touch plug is composed of an inner cylinder part and an outer cylinder part, and is formed at an outlet port formed at the upper part of the inner cylinder part and at the lower part of the outer cylinder part. A plug body in which a liquid flow path communicating with an inflow port is provided between an inner cylinder part and an outer cylinder part, and a valve that moves up and down in conjunction with a downward push of a push button disposed on the upper surface of the plug body A rod, a valve body provided at the tip of the valve rod so as to open and close the inlet of the liquid passage, and a push button connected to the outlet of the liquid passage in synchronization with opening and closing of the valve body It consists of a flap that opens and closes.
[0003]
[Problems to be solved by the invention]
However, in the above-described configuration, the valve body that opens and closes the liquid flow path is moved up and down by a push button disposed on the upper surface of the plug body, so that the opening / closing operation mechanism is in the vertical direction, and the height of the entire plug body is Get higher. Further, since the valve body is moved inward of the container body when the liquid flow path is opened, if the pressure is higher than the outside due to the high temperature of the liquid in the container body, a force is required for the opening operation.
[0004]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a liquid container stopper that can be easily opened and closed while reducing the overall height of the stopper.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, the stopper of the liquid container of the present invention has a bottomed cylindrical outer plug that is detachably attached to the opening of the container main body, and a hinge that can be pivoted in the vertical direction above the outer plug. An inner plug that opens and closes the upper opening of the outer plug, and a locking member that locks the inner plug to the outer plug in a closed state, and the outer plug has a liquid passage hole in its bottom wall. The inner plug includes a seal member that seals the liquid passage hole from above, and the locking member is a side wall of the inner plug. It has a latching claw which protrudes from the inner plug and engages with the inner peripheral wall of the outer plug, and is provided on the upper surface of the inner plug so as to be able to reciprocate in the locking claw protruding direction.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. A stopper 1 of a liquid container such as a thermos bottle is provided with an outer plug 3 that is detachably attached to an opening of a container body 2, and an upper part of the outer plug 3 that can be hinged in the vertical direction. It has an inner plug 4 for opening and closing the upper opening, and a locking member 5 for locking the inner plug 4 to the outer plug 3 in a closed state.
[0007]
The outer plug 3 includes a plug body portion 31 formed in a bottomed cylindrical shape and an attachment portion 32 to the container main body 2 to which the plug body portion 31 is assembled. The plug body portion 31 is opened to the container main body 2. The screw part 33 formed on the inner periphery of the attachment part 32 is screwed into the screw part 21 on the outer periphery of the neck part of the container body 2 to be attached to the opening of the container body 2. The inner plug 4 is attached to one side of the upper portion of the attachment portion 32 so as to be pivotable in the vertical direction by a horizontal support shaft 6. Thereby, as for the plug 1, the side facing the spindle 6 in the radial direction becomes a spout.
[0008]
The plug portion 31 is formed so that the bottom wall 34 is inclined so as to be lowered from the support shaft 6 side to the spout side, and the liquid passage hole 35 is formed on the lower side of the bottom wall 34 and the air hole 36 is formed on the higher side. Are formed as a liquid flow path 37 between the bottom wall 34 and the upper opening. In addition, a ring-shaped seal member 38 is provided on the outer periphery of the lower portion of the plug body 31 so as to be in close contact with the step portion 22 at the lower portion of the inner peripheral wall of the opening of the container body 2 when the outer plug 3 is attached to the container body 2. Yes.
[0009]
The inner plug 4 includes a plug part 41 formed in a bottomed cylindrical shape and a lid part 42 that covers an upper opening of the plug part 41, and the plug part 41 includes a trunk part 43 and a bottom wall 44. A groove 45 for attaching a seal member is provided on the outer periphery of the body portion 43. The bottom wall 44 is formed so as to be inclined corresponding to the bottom wall 34 of the outer plug 3, and a seal member is attached to the lower surface thereof at positions corresponding to the liquid passage hole 35 and the air hole 36, respectively. Projections 46 and 47 are formed. An air vent hole 46 a is formed in the projection 46 corresponding to the liquid passage hole 35. The lid portion 42 is also formed with an air vent hole 42a that opens to the outside.
[0010]
The plug body 41 is provided with a seal member 7 made of an elastic body such as an elastomer. The seal member 7 includes an inlet seal portion 71 that seals the liquid passage hole 35 from above when the inner plug 4 is closed, an air hole seal portion 72 that seals the air hole 36 from above, An outlet seal portion 73 that is in close contact with the inner peripheral wall in the vicinity of the upper opening of the outer plug 3 is integrally formed. The inlet seal portion 71 is fitted on the projection 46 and the air hole seal portion 72 is fitted on the projection 47, respectively. Then, the tongue piece 74 is fitted into the groove 45 and attached to the plug body 41. The inflow port seal portion 71 is provided by forming a hollow portion 75 between the protrusion 46. In this embodiment, an integrated seal member is used. However, the inlet seal 71, the air hole seal 72, and the outlet seal 73 may be separate parts.
[0011]
The locking member 5 is provided on the upper surface of the lid portion 42. The locking member 5 protrudes from the spout side outer peripheral wall of the plug body 41 and engages with an engagement hole 39 formed in the spout side inner peripheral wall of the upper portion of the mounting portion 32 of the outer plug 3. 52 is provided so as to be able to reciprocate in the protruding direction of the locking claw 52, that is, in the direction of the spout from the support shaft 6, and is constantly poured by a coil spring 51 that is contracted between the side wall of the lid portion 42. It is biased toward the mouth. Further, an operation portion 53 is formed on the upper surface so as to be raised.
[0012]
In the locking member 5, when the upper opening of the outer plug 3 is closed by the inner plug 4, the locking claw 52 engages with the engagement hole 39 to hold the inner plug 4 in the closed state. Further, by moving the operation portion 53 toward the support shaft 6 against the urging force of the coil spring 51, the locking claw 52 is pulled into the plug body portion 41 and engaged with the engagement hole 39. Is released. The support shaft 6 is provided with a torsion spring 61 that constantly urges the inner plug 4 in the opening direction (upward). The urging force of the torsion spring 61 causes the inner plug 4 to rotate upward and open. As shown in FIG. 1, the inner plug 4 opens about 180 degrees from the closed state around the support shaft 6. When the container body 2 is tilted and liquid is poured, the inner plug 4 is urged by the urging force of the torsion spring 61. The rotation of 4 in the closing direction is restricted and the open state is maintained.
[0013]
As described above, the plug body 1 is configured so that the liquid passage hole 35 formed in the bottom wall 34 of the outer plug 3 is closed from above by the inlet seal portion 71 of the inner plug 4 that rotates in the vertical direction. The distance between the wall 34 and the upper opening can be shortened, and the operation of the locking member 5 that opens the inner plug 4 is in the direction of the spout, that is, the lateral direction from the support shaft 6 that is the radial direction of the container body 2. As a result, the overall height of the plug 1 can be made lower than before. Moreover, since it is the structure which the inner stopper 4 rotates upwards, even when the pressure in a container main body is higher than the exterior, the inner stopper 4 can be opened easily. Furthermore, since the cavity 75 inside the inlet seal portion 71 communicates with the atmosphere, the closing operation is easy.
[0014]
【The invention's effect】
As described above, the liquid container plug of the present invention has a liquid passage hole formed in the bottom wall of a bottomed cylindrical outer plug that is detachably attached to the container main body opening, and the upper part from the bottom wall. A liquid passage is formed between the openings, and a seal member is provided on the upper part of the outer plug so as to be pivotable in the vertical direction, and the inner plug that opens and closes the upper opening of the outer plug is sealed from above. A locking member provided with a locking claw that holds the inner plug in a closed state by projecting from the side wall of the inner plug and engaging the inner peripheral wall of the outer plug on the upper surface of the inner plug is reciprocated in the locking claw protruding direction. Since it is provided, the dimension between the bottom wall of the outer plug and the upper opening can be shortened, and the operation of the locking member that opens the inner plug is in the horizontal direction, so that the overall height of the plug body can be made lower than before. . As a result, the container body neck to which the stopper is attached can be shortened to make the container body compact. Further, since the inner plug is pivoted upward and opened, the inner plug can be easily opened even when the pressure in the container body is higher than the outside.
[Brief description of the drawings]
1 is a cross-sectional view of a state in which the plug of the present invention is opened. FIG. 2 is a cross-sectional view of the same in a closed state. FIG. 3 is a cross-sectional view of a state in which a locking member is moved in a supporting shaft direction. Partially cutaway plan view with the plug open [Fig. 5] Perspective view with the plug open [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Plug body, 2 ... Container main body, 3 ... Outer plug, 31 ... Plug body part, 32 ... Mounting part, 34 ... Bottom wall, 35 ... Liquid passage hole, 37 ... Liquid flow path, 39 ... Engagement hole, 4 DESCRIPTION OF SYMBOLS ... Inner plug, 41 ... Plug body part, 43 ... Trunk part, 44 ... Bottom wall, 5 ... Locking member, 52 ... Locking claw, 53 ... Operation part, 6 ... Spindle, 7 ... Seal member, 71 ... Flow Inlet seal

Claims

A bottomed cylindrical outer plug that is detachably attached to the container body opening, an inner plug that is provided on the upper portion of the outer plug so as to be pivotable in the vertical direction, and opens and closes the upper opening of the outer plug; A locking member for locking the stopper to the outer stopper in a closed state, and the outer stopper has a liquid passage hole formed in a bottom wall thereof, and a liquid flow path between the bottom wall and the upper opening. The inner plug includes a sealing member that seals the liquid passage hole from above, and the locking member has a locking claw that protrudes from a side wall of the inner plug and engages with the inner peripheral wall of the outer plug. The stopper of the liquid container is provided on the upper surface of the inner stopper so as to be able to reciprocate in the protruding direction of the locking claw.