JP7129200B2 - container lid - Google Patents

container lid Download PDF

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JP7129200B2
JP7129200B2 JP2018078829A JP2018078829A JP7129200B2 JP 7129200 B2 JP7129200 B2 JP 7129200B2 JP 2018078829 A JP2018078829 A JP 2018078829A JP 2018078829 A JP2018078829 A JP 2018078829A JP 7129200 B2 JP7129200 B2 JP 7129200B2
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wall
check valve
valve seat
peripheral surface
valve member
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JP2019182531A (en
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基晃 桐
尚 杉山
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Nippon Closures Co Ltd
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Nippon Closures Co Ltd
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Description

本発明は、合成樹脂から一体に形成された本体と合成樹脂から一体に形成された逆止弁部材とから構成された容器蓋に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container lid composed of a main body integrally formed of synthetic resin and a check valve member integrally formed of synthetic resin.

周知の如く、調味料、特に醤油のための容器として、圧搾自在な外側層と圧搾自在な内側層との積層構造であり、外側層の口頸部には外側層と内側層の間に大気を導入するための導入孔が形成されている積層構造容器が広く実用に供されている。そして、特にそれに限定されるものではないが、上記のとおりの積層構造容器に適した容器蓋として、下記特許文献１及び２には、容器の口頸部に装着される合成樹脂製本体及びこの本体に装着される合成樹脂製逆止弁部材に加えて合成樹脂製中間部材（下記特許文献１においては案内筒状体、下記特許文献２においては中栓）を含む容器蓋が開示されている。かような容器蓋においては、容器内容物を排出するために容器を圧搾すると、増大された容器内圧によって逆止弁部材に配設されている逆止弁が本体に配設されている弁座面から浮上されて排出開口が開放され、内容物が排出される。容器の圧搾を解除すると、容器内圧が元に戻って逆止弁が弁座面に着座し排出開口が閉ざされる。 As is well known, a container for seasonings, especially soy sauce, has a laminated structure of a compressible outer layer and a compressible inner layer, and the mouth and neck portion of the outer layer is filled with air between the outer layer and the inner layer. Laminated structure containers having an introduction hole for introducing are widely put into practical use. Although not particularly limited thereto, as container lids suitable for the laminated structure container as described above, the following Patent Documents 1 and 2 disclose a synthetic resin main body to be attached to the mouth and neck of a container, and the container lid. A container lid is disclosed that includes a synthetic resin intermediate member (a guide cylindrical body in Patent Document 1 below and an inner plug in Patent Document 2 below) in addition to a synthetic resin check valve member attached to a main body. . In such a container lid, when the container is squeezed to discharge the contents of the container, the increased internal pressure of the container pushes the check valve, which is arranged on the check valve member, to the valve seat provided on the main body. It rises from the surface to open the discharge opening and discharge the contents. When the squeezing of the container is released, the internal pressure of the container is restored and the check valve is seated on the valve seat surface to close the discharge opening.

特開２０１６－３７２９０号公報JP 2016-37290 A 特開２０１８－１６３４９号公報JP 2018-16349 A

而して、上述した形態の従来の容器蓋には、特に別々に成形された３個の構成部材、即ち本体、逆止弁部材及び中間部材、から構成されていることに起因して、成形及び組立を含む製造工程が煩雑であると共に製造コストが比較的高価である、という問題が存在する。 Therefore, the conventional container lid of the above-described configuration has a problem with molding, particularly because it is composed of three separately molded components: the main body, the check valve member and the intermediate member. Also, there is the problem that the manufacturing process including assembly is complicated and the manufacturing cost is relatively high.

本発明は、上記事実に鑑みてなされたものであり、その主たる技術的課題は、上述した形態の従来の容器蓋と実質上同一或いはそれ以上の機能を有するにも拘らず、製造工程が簡潔化されると共に製造コストが低減される、新規且つ改良された容器蓋を提供することである。 The present invention has been made in view of the above facts, and its main technical problem is to simplify the manufacturing process in spite of having substantially the same or more functions as the conventional container lid of the above-described form. To provide a new and improved container lid which is easy to use and reduces manufacturing costs.

本発明者等は、鋭意検討の結果、本体と逆止弁部材との形態を工夫することによって、上述した従来の容器蓋と実質上同一或いはそれ以上の機能を有するにも拘らず、本体と逆止弁部材との２個の構成部材から容器蓋を構成することができ、上記主たる技術的課題を達成することができることを見出した。 As a result of intensive studies, the present inventors have found that by devising the shapes of the main body and the check valve member, the main body and the check valve member have substantially the same or more functions than the above-described conventional container lid. It has been found that the container lid can be constructed from two components, the check valve member, and the above main technical problem can be achieved.

即ち、本発明によれば、上記主たる技術的課題を達成することができる容器蓋として、
容器の口頸部に装着される、合成樹脂から一体に成形された本体と、該本体に装着される、合成樹脂から一体に成形された逆止弁部材とから構成され、
該本体は、円環形状頂壁、該頂壁の外周縁部から垂下する円筒形状装着壁、該頂壁の内周縁部から上方に突出する排出筒、該頂壁から垂下する円筒形状保持壁、及び該保持壁よりも半径方向内側に配設され且つ排出開口を規定する弁座面を有する弁座壁を含み、
該逆止弁部材は、円環形状フランジ壁、該フランジ壁よりも半径方向内側に配設され且つ該弁座面に対応する着座面を有する逆止弁、及び該フランジ壁に対して昇降動自在に該逆止弁を接続する、周方向に間隔をおいて配設された複数個の弾性変形自在な弾性接続片を含み、
該逆止弁部材における該フランジ壁が該本体の該保持壁に装着され、該逆止弁部材における該逆止弁の該着座面が該本体における該弁座壁の該弁座面に押圧されて該排出開口が閉じられる、
ことを特徴とする容器蓋が提供される。 That is, according to the present invention, as a container lid capable of achieving the above main technical problems,
Consists of a main body integrally molded from synthetic resin, which is attached to the mouth and neck of the container, and a check valve member integrally molded from synthetic resin, which is attached to the main body,
The main body includes an annular top wall, a cylindrical mounting wall depending from the outer peripheral edge of the top wall, a discharge cylinder projecting upward from the inner peripheral edge of the top wall, and a cylindrical retaining wall depending from the top wall. and a seat wall disposed radially inwardly of the retaining wall and having a seat surface defining a discharge opening;
The check valve member includes an annular flange wall, a check valve disposed radially inwardly of the flange wall and having a seating surface corresponding to the valve seat surface, and a check valve that moves up and down with respect to the flange wall. comprising a plurality of elastically deformable elastic connecting pieces arranged at intervals in the circumferential direction for freely connecting the check valve;
The flange wall of the check valve member is attached to the retaining wall of the body, and the seating surface of the check valve of the check valve member is pressed against the valve seat surface of the valve seat wall of the body. the discharge opening is closed by
There is provided a container lid characterized by:

好ましくは、該逆止弁部材の該逆止弁は、円形状上壁及び該上壁の外周縁部から垂下する円筒形垂下壁を有し、該着座面は該垂下壁の外周面下端部に形成されている。該本体の該弁座壁は、上方に延出する円筒形状基部、及び該基部の上端から半径方向内方に向かって下方に傾斜して延びる逆円錐台筒形状弁座部を有し、該弁座面は該弁座部の上面によって規定されているのが好適である。該逆止弁部材は、該フランジ壁から垂下し、内周面下部が該本体における該弁座壁の該基部の外周面上部に密接される円筒形状密接壁を含み、該弁座壁の該基部の該外周面上部及び／又は該円筒形状密接壁の該内周面下部には、該弁座壁の該基部の該外周面上部と該円筒形状密接壁の該内周面下部との間に戻り流路を規定する少なくとも１個の溝が形成されており、該本体における該保持壁の下端部と該弁座壁の下端部とは円環状接続壁によって接続されており、該接続壁には該溝に対応して少なくとも１個の戻し穴が形成されているのが好ましい。好適には、該本体は、該頂壁を覆う閉位置と該頂壁を露呈せしめる開位置との間を旋回自在に、周方向所定部位においてヒンジ手段を介して該頂壁に接続された外蓋を含み、該溝及び該戻し穴は該ヒンジ手段に対して直径方向反対側に配置されている。該本体の該保持壁の内周面上部には、周方向に連続して延在する１個の円環形状突条又は周方向に間隔をおいて周方向に延在する複数個の弧状突条が形成されていると共に、該円環形状突条又は該弧状突条よりも所定間隔だけ下方に、周方向に間隔をおいて上下方向に延在する複数個のリブが形成されており、該逆止弁部材における該フランジ壁の外周縁部を該本体の該保持壁の該円環形状突条又は該弧状突条と該リブとの間に弾性的に嵌入せしめることによって、該本体に該逆止弁部材が装着されているのが望ましい。 Preferably, the check valve of the check valve member has a circular upper wall and a cylindrical depending wall depending from the outer peripheral edge of the upper wall, the seating surface being the lower end of the outer peripheral surface of the depending wall. is formed in The valve seat wall of the body has an upwardly extending cylindrical base and an inverted frusto-conical tubular valve seat extending downwardly and radially inwardly from an upper end of the base; Preferably, the valve seat surface is defined by the upper surface of the valve seat portion. The check valve member includes a cylindrical sealing wall depending from the flange wall, the lower inner peripheral surface of which is in close contact with the upper outer peripheral surface of the base of the valve seat wall of the body; Between the upper portion of the outer peripheral surface of the base and/or the lower portion of the inner peripheral surface of the cylindrical close contact wall, there is a gap between the upper portion of the outer peripheral surface of the base of the valve seat wall and the lower inner peripheral surface of the cylindrical close contact wall. At least one groove defining a return flow path is formed in the body, and the lower end of the retaining wall and the lower end of the valve seat wall in the main body are connected by an annular connecting wall, and the connecting wall is preferably formed with at least one return hole corresponding to said groove. Preferably, the body is rotatable between a closed position covering the top wall and an open position exposing the top wall, and is connected to the top wall via hinge means at predetermined circumferential locations. A lid is included, the groove and the return hole being diametrically opposed to the hinge means. On the upper part of the inner peripheral surface of the holding wall of the main body, there is a circumferentially continuously extending circular annular projection or a plurality of circumferentially extending arcuate projections spaced apart in the circumferential direction. A plurality of ribs extending vertically at intervals in the circumferential direction are formed below the annular projection or the arc-shaped projection by a predetermined interval, By elastically fitting the outer peripheral edge of the flange wall of the check valve member between the annular projection or the arcuate projection of the retaining wall of the body and the rib, Preferably, the check valve member is attached.

本発明の容器蓋は、上述した従来の容器蓋と実質上同一或いはそれ以上の機能を有するにも拘らず、本体と逆止弁部材との２個の構成部品から構成されており、それ故に簡潔な製造工程によって製造することができると共に、製造コストが比較的安価である。 Although the container lid of the present invention has substantially the same or more functions than the above-described conventional container lid, it is composed of two components, the main body and the check valve member. It can be manufactured by a simple manufacturing process and the manufacturing cost is relatively low.

本発明に従って構成された容器蓋の好適実施形態における本体を、成形時の状態で示す断面図。FIG. 2 is a cross-sectional view of the body of a preferred embodiment of a container closure constructed in accordance with the present invention, in a molded state; 図１に示す本体の平面図。2 is a plan view of the main body shown in FIG. 1; FIG. 図１に示す本体の底面図。2 is a bottom view of the main body shown in FIG. 1; FIG. 本発明に従って構成された容器蓋の好適実施形態における逆止弁部材を示す断面図。FIG. 4 is a cross-sectional view showing a check valve member in a preferred embodiment of a container lid constructed in accordance with the present invention; 図４に示す逆止弁部材の平面図。FIG. 5 is a plan view of the check valve member shown in FIG. 4; 図１乃至図３に示す本体と図４及び５に示す逆止弁部材とを組み合わせて完成された、本発明に従って構成された容器蓋を、外蓋を成形時の状態で示す断面図。FIG. 6 is a cross-sectional view showing a container lid constructed in accordance with the present invention, completed by combining the main body shown in FIGS. 1 to 3 and the check valve member shown in FIGS. 4 and 5, with the outer lid molded. 図６に示す容器蓋を、外蓋を閉位置にせしめた状態で示す断面図。FIG. 7 is a cross-sectional view showing the container lid shown in FIG. 6 with the outer lid at the closed position;

以下、本発明に従って構成された容器蓋の好適実施形態を示す添付図面を参照して更に詳述する。 A further detailed description will now be given with reference to the accompanying drawings showing a preferred embodiment of a container closure constructed in accordance with the present invention.

本発明に従って構成された容器蓋の図示の好適実施形態は、図１乃至図３に示す本体２と図４及び図５に示す逆止弁部材４とから構成されている。 The illustrated preferred embodiment of a container closure constructed in accordance with the present invention comprises a body 2 shown in FIGS. 1-3 and a check valve member 4 shown in FIGS.

本体２を成形時の状態で示している図１乃至図３を参照して説明すると、ポリエチレン又はポリプロピレンの如き適宜の合成樹脂材料から一体に押出成形又は圧縮成形することができる本体２は、円環形状である頂壁６及びこの頂壁６の外周縁部から実質上鉛直に垂下する円筒形状の装着壁８を含んでいる。頂壁６の内周面は、図１及び図２を参照することによって明確に理解することができるとおり、上方に向かって半径方向外方に傾斜されている。更に詳しくは、図１及び図２を参照することによって明確に理解されるとおり、最右部位においては実質上鉛直に延びているが、この最右部位から周方向両側に向かって９０度の角度範囲においては傾斜部分が漸次増大され、最右部位の直径方向反対側の１８０度の角度範囲においては内周面の全体が傾斜されている。 1-3, which show the body 2 in its as-molded condition, the body 2, which can be integrally extruded or compression molded from a suitable synthetic resin material such as polyethylene or polypropylene, comprises a circular shape. It includes an annular-shaped top wall 6 and a cylindrical mounting wall 8 depending substantially vertically from the outer peripheral edge of the top wall 6 . The inner peripheral surface of the top wall 6 is slanted radially outward toward the top, as can be clearly seen by referring to FIGS. 1 and 2 . More specifically, as will be clearly understood with reference to FIGS. 1 and 2, the rightmost portion extends substantially vertically, but extends at an angle of 90 degrees from this rightmost portion toward both sides in the circumferential direction. In the range, the sloped portion is gradually increased, and the entire inner peripheral surface is sloped in an angle range of 180 degrees on the diametrically opposite side of the rightmost portion.

上記装着壁８の内周面下端部には、図１及び図３に明確に図示する如く、円環状突条１０が形成されている。更に、装着壁８の内周面上端部と頂壁６の下面外周縁部とに亘って、周方向に等間隔をおいて上下方向に延びる複数個（図示の実施形態においては１６個）の係止リブ１２が形成されている。係止リブ１２の内周縁上半部は実質上鉛直に延び内周縁下半部は下方に向かって半径方向外方に傾斜している。 An annular ridge 10 is formed at the lower end of the inner peripheral surface of the mounting wall 8, as clearly shown in FIGS. Furthermore, a plurality of (16 in the illustrated embodiment) extending vertically at equal intervals in the circumferential direction over the upper end of the inner peripheral surface of the mounting wall 8 and the outer peripheral edge of the lower surface of the top wall 6 . A locking rib 12 is formed. The upper half portion of the inner peripheral edge of the locking rib 12 extends substantially vertically and the lower half portion of the inner peripheral edge slopes radially outward toward the bottom.

図１乃至図３を参照して説明を続けると、本体２には、上記係止リブ１２よりも幾分半径方向内側において上記頂壁６の下面から垂下する略円筒形状のシール片１４が形成されている。このシール片１４の内周面は実質上鉛直に延在し、外周面上半部も実質上鉛直に延在し、外周面下半部は下方に向かって半径方向内方に傾斜している。頂壁６の上面の内周縁部には、上方に突出する全体として円筒形状の排出筒１６が形成されている。図１及び図２を参照することによって明確に理解される如く、排出筒１６の中心軸線Ｂは頂壁６及び装着壁８の中心軸線Ａに対して図１及び図２において幾分左方に変位している。排出筒１６の上端部は上方に向かって半径方向外方に円弧状に延出している。頂壁２の上面の外周縁部には係止突条１８が形成されている。この係止突条１８の中心軸線は頂壁２及び装着壁４の中心軸線Ａと合致している。係止突条１８の内周面は上方に向かって半径方向外方に傾斜しており、係止突条１８の外周面上端部は半径方向外方に突出している。 1 to 3, the main body 2 is formed with a substantially cylindrical sealing piece 14 depending from the lower surface of the top wall 6 somewhat radially inwardly of the locking rib 12. It is The inner peripheral surface of the seal piece 14 extends substantially vertically, the upper half of the outer peripheral surface also extends substantially vertically, and the lower half of the outer peripheral surface slopes radially inward downward. . A generally cylindrical discharge tube 16 protruding upward is formed on the inner peripheral edge of the upper surface of the top wall 6 . 1 and 2, the central axis B of the discharge tube 16 is slightly to the left of the central axis A of the top wall 6 and mounting wall 8 in FIGS. Displaced. The upper end of the discharge tube 16 extends radially outward in an arc shape. A locking projection 18 is formed on the outer peripheral edge of the upper surface of the top wall 2 . The central axis of this locking projection 18 coincides with the central axis A of the top wall 2 and mounting wall 4 . The inner peripheral surface of the locking projection 18 is inclined radially outward, and the upper end of the outer peripheral surface of the locking projection 18 protrudes radially outward.

本体２は、上記頂壁６の下面内周縁部から垂下する円筒形状の保持壁２０を含むことが重要である。本体２は、更に、保持壁２０よりも半径方向内側に配設された弁座壁２２を含むことが重要である。図示の実施形態においては、保持壁２０はシール片１４よりも幾分半径方向内側において頂壁６の下面内周縁部から実質上鉛直に垂下している。この保持壁２０の内周面上端部には、周方向に連続して延びる円環形状の突条２４が形成されている。所望ならば、円環形状の突条２４に代えて、周方向に間隔をおいて周方向に延びる複数個の弧状突条を形成することもできる。保持壁２０の内周面には、突条２４よりも所定間隔だけ下方に、周方向に間隔をおいて上下方向に延びる複数個のリブ２５も形成されている。弁座壁２２は上方に延出する円筒形状の基部２６及びこの基部２６の上端から半径方向内側に向かって下方に傾斜して延びる逆円錐台筒形状の弁座部２８を有する。基部２６の上端面は半径方向外方に向かって下方に幾分傾斜せしめられており、そこに付着した内容物を後述する溝３２に誘導するのが好都合である。弁座部２８の上面は、排出開口２９を規定する弁座面を構成している。保持壁２０の下端と弁座壁２２の下端とは円環形状の接続壁３０によって接続されている。図２に図示する如く、弁座壁２２における基部２６の外周面上部（後述する逆止弁部材４の密接壁６６が密接する部位）の、図２において左端部領域（この領域は後述するヒンジ手段に対して直径方向反対側に位置する）には、少なくとも１個（図示の実施形態においては周方向に間隔をおいて３個）の上下方向に延びる、内容物を容器内に戻すための溝３２が形成されている。そして、かかる溝３２に対応して、即ち溝３２の周方向位置に整合せしめて、接続壁３０には、内容物を容器内に戻すための穴３４が形成されている。図示の実施形態においては周方向特定領域に溝３２を形成しているが、所望ならば周方向における他の領域にも溝３２を形成し、これに応じて接続壁３０の周方向における他の領域にも戻し穴３４を形成することもできる。溝３２の断面積は０．０２５乃至０．１００ｍｍ２程度であるのが好都合である。 Importantly, the body 2 includes a cylindrical retaining wall 20 depending from the inner peripheral edge of the lower surface of the top wall 6 . Importantly, the body 2 also includes a valve seat wall 22 arranged radially inwardly of the retaining wall 20 . In the illustrated embodiment, the retaining wall 20 depends substantially vertically from the lower inner peripheral edge of the top wall 6 somewhat radially inwardly of the seal strip 14 . An annular projection 24 extending continuously in the circumferential direction is formed at the upper end of the inner peripheral surface of the holding wall 20 . If desired, the annular ridge 24 can be replaced by a plurality of circumferentially spaced arcuate ridges. A plurality of ribs 25 extending in the vertical direction are also formed on the inner peripheral surface of the holding wall 20 below the ridges 24 by a predetermined interval at intervals in the circumferential direction. The valve seat wall 22 has an upwardly extending cylindrical base portion 26 and a valve seat portion 28 in the shape of an inverted truncated conical cylinder extending radially inward from the upper end of the base portion 26 so as to be inclined downward. The upper end surface of the base 26 is slanted downwardly in a radially outward direction to conveniently guide any material adhering thereto to a groove 32 which will be described later. The upper surface of the valve seat portion 28 constitutes a valve seat surface that defines the discharge opening 29 . A lower end of the holding wall 20 and a lower end of the valve seat wall 22 are connected by an annular connecting wall 30 . As shown in FIG. 2, the left end region in FIG. diametrically opposed to the means) includes at least one (three in the illustrated embodiment, circumferentially spaced apart) vertically extending means for returning the contents into the container. A groove 32 is formed. A hole 34 is formed in the connection wall 30 so as to correspond to the groove 32, that is, aligned with the circumferential position of the groove 32, for returning the contents to the container. In the illustrated embodiment, the grooves 32 are formed in specific circumferential regions, but if desired, the grooves 32 may be formed in other circumferential regions as well, correspondingly in other circumferential regions of the connecting wall 30 . A return hole 34 can also be formed in the region. Advantageously, the cross-sectional area of the groove 32 is on the order of 0.025 to 0.100 mm 2 .

図示の実施形態においては、上記本体２には外蓋３６が付設されている。本体２が成形型内で成形された状態においては、外蓋３６は図１乃至図３に図示する位置にあるが、実際の使用の際には、図７に実線で示す閉位置と図７に二点鎖線で示す開位置との間を旋回動せしめられる。外蓋３６の説明における上下方向等に関しては、便宜上外蓋２が図７に実線で示す閉位置にある状態を基準とする。図示の実施形態における外蓋３６は円形状の天面壁３８とこの天面壁３８の外周縁部から実質上鉛直に垂下するスカート壁４０とを有する。そして、スカート壁４０の外周面下端部が、それ自体は周知の形態でよいヒンジ手段４２を介して装着壁８の外周面上端部に旋回自在に接続されている。天面壁３８の内面即ち下面には、略円筒形状の外側シール片４４及び略円筒形状の内側シール片４６が形成されている。外側シール片４４及び内側シール片４６の中心軸線Ｂは天面壁３８及びスカート壁４０の中心軸線Ａに対して図７において左側に幾分変位している。更に、天面壁３８の下面中央部には下方に垂下する押圧筒４８が形成されている。図示の押圧筒４８は、比較的大径の円筒形状の上部、逆円錐台筒形状の中間部及び比較的小径の円筒形状下部を有する。スカート壁４０の内周面下端部には円環形状の係止凹部５０が形成されている。また、上記ヒンジ手段４２の直径方向反対側において、スカート壁４０の外周面下端部には、外蓋３６を開閉する際に指を掛けることができる突起５２が形成されている。 In the illustrated embodiment, the main body 2 is provided with an outer lid 36 . When the main body 2 is molded in the mold, the outer lid 36 is in the position shown in FIGS. 1-3. and the open position indicated by the two-dot chain line. Regarding the vertical direction and the like in the description of the outer lid 36, for the sake of convenience, the state in which the outer lid 2 is in the closed position indicated by the solid line in FIG. 7 is used as a reference. The outer lid 36 in the illustrated embodiment has a circular top wall 38 and a skirt wall 40 substantially vertically hanging from the outer peripheral edge of the top wall 38 . A lower end portion of the outer peripheral surface of the skirt wall 40 is rotatably connected to an upper end portion of the outer peripheral surface of the mounting wall 8 via a hinge means 42 which itself may be of a known form. A substantially cylindrical outer seal piece 44 and a substantially cylindrical inner seal piece 46 are formed on the inner surface, that is, the lower surface of the top wall 38 . The center axis B of the outer seal piece 44 and the inner seal piece 46 is slightly displaced to the left in FIG. Further, a pressing cylinder 48 that hangs down is formed in the central portion of the lower surface of the top wall 38 . The illustrated pressing cylinder 48 has a relatively large-diameter cylindrical upper portion, an inverted truncated cone-shaped intermediate portion, and a relatively small-diameter cylindrical lower portion. An annular locking recess 50 is formed at the lower end of the inner peripheral surface of the skirt wall 40 . On the opposite side of the hinge means 42 in the diametrical direction, a protrusion 52 is formed on the lower end of the outer peripheral surface of the skirt wall 40 so that a finger can be put thereon when opening and closing the outer lid 36 .

図４及び図５を参照して説明を続けると、逆止弁部材４は円環形状のフランジ壁５４、このフランジ壁５４の半径方向内側に配設された逆止弁５６、及びフランジ壁５４に対して上下方向に移動自在即ち昇降動自在に逆止弁５６を接続する弾性接続片５８を含んでいることが重要である。図示の実施壁形態においては、逆止弁５６は円形状の上壁６０とこの上壁６０の外周縁部から垂下する円筒形状の垂下壁６２を有する。上壁６０は中心に向けて若干上方に膨出せしめられている。垂下壁６２の外周面下端部は、断面図において下方に向かって半径方向内側に円弧形状をなして延在せしめられており、着座面を構成している。図示の実施形態においては、周方向に等間隔をおいて３個の接続片５８が配設されており、接続片５８の各々は、図５を参照することによって明確に理解されるとおり、逆止弁５６の上壁６０の外周縁から半径方向外方に延び、次いで周方向に相当な長さに渡って延び、そして更に半径方向外方にフランジ壁５４まで延びている。逆止弁部材４は、更に、フランジ壁５４の下面内周縁部から下方に垂下する円筒形状の密接壁６６を有する。図示の実施形態における密接壁６６の上部は実質上鉛直に垂下しているが下部は下方に向かって若干半径方向内方に傾斜している。後に更に言及する如く、密接壁６６の内周面下部は本体２の弁座壁２２における基部２６の外周面上部に密接される。所望ならば、基部２６の外周面上部に上記溝３２を形成することに代えて或いはこれに加えて、密接壁６６の内周面下部に溝を形成することもできる。 4 and 5, the check valve member 4 has an annular flange wall 54, a check valve 56 disposed radially inward of the flange wall 54, and a flange wall 54. It is important to include a resilient connecting piece 58 which connects the check valve 56 so as to be vertically movable with respect to. In the illustrated wall configuration, the check valve 56 has a circular top wall 60 and a cylindrical depending wall 62 depending from the outer periphery of the top wall 60 . The upper wall 60 bulges slightly upward toward the center. A lower end portion of the outer peripheral surface of the hanging wall 62 extends radially inward downward in a cross-sectional view to form a circular arc shape, and constitutes a seating surface. In the illustrated embodiment, there are three connecting pieces 58 equally spaced in the circumferential direction, each of the connecting pieces 58 being reversed as will be clearly understood with reference to FIG. It extends radially outwardly from the outer peripheral edge of the top wall 60 of the stop valve 56 , then extends circumferentially a substantial length, and further radially outwardly to the flange wall 54 . The check valve member 4 further has a cylindrical sealing wall 66 depending downwardly from the inner periphery of the lower surface of the flange wall 54 . The upper portion of the containment wall 66 in the illustrated embodiment depends substantially vertically, while the lower portion slopes slightly radially inwardly downward. As will be further described later, the lower inner peripheral surface of the contact wall 66 is in close contact with the upper outer peripheral surface of the base 26 of the valve seat wall 22 of the body 2 . If desired, instead of or in addition to forming the groove 32 on the upper outer peripheral surface of the base 26, a groove may be formed on the lower inner peripheral surface of the sealing wall 66. FIG.

図６に図示するとおり、上記本体２に上記逆止弁部材４を組み合わせることによって、更に詳しくは上記逆止弁部材４を上方から上記本体２内の所要位置に強制的に押し込むことによって、本発明に従って構成された容器蓋が完成される。かかる組み合わせに際しては、逆止弁部材４におけるフランジ壁５４の外周縁部を、本体２における保持壁２０の内周面に形成されている突条２４とリブ２５との間に弾性的に嵌入（即ち、突条２４、リブ２５及びフランジ壁５４の少なくとも１個の弾性変形を伴う嵌入）し、本体２に逆止弁部材４を装着する。かくすると、逆止弁部材４における垂下壁６２の下端に規定されている着座面が、本体２における弁座壁２２の弁座部２８の上面に規定されている弁座面に押圧され、これによって排出開口２９が閉じられる。また、逆止弁部材４における密接壁６６の内周面下部が本体２における弁座壁２２の基部２６の外周面上部に密接される。 As shown in FIG. 6, by combining the check valve member 4 with the main body 2, more specifically, by forcibly pushing the check valve member 4 into a desired position within the main body 2 from above, the main body 2 can be opened. A container lid constructed in accordance with the invention is completed. In such combination, the outer peripheral edge of the flange wall 54 of the check valve member 4 is elastically fitted between the rib 25 and the projection 24 formed on the inner peripheral surface of the holding wall 20 of the main body 2 ( That is, at least one of the protrusion 24 , rib 25 and flange wall 54 is fitted with elastic deformation, and the check valve member 4 is attached to the main body 2 . Thus, the seating surface defined at the lower end of the hanging wall 62 of the check valve member 4 is pressed against the valve seat surface defined at the upper surface of the valve seat portion 28 of the valve seat wall 22 of the main body 2. The discharge opening 29 is closed by . Also, the lower inner peripheral surface of the contact wall 66 of the check valve member 4 is in close contact with the upper outer peripheral surface of the base 26 of the valve seat wall 22 of the main body 2 .

図７には、本発明に従って構成された上述したとおりの容器蓋が好適に適用される、それ自体は周知の積層構造容器の口頸部６８も図示されている。図示の容器は、適宜の合成樹脂から形成されている比較的肉厚の外側層７０と同様に適宜の合成樹脂から形成されている比較的肉薄の内側層７２とから構成されている。逆止弁部材４が組み合わされた本体２は口頸部６２に被嵌し、口頸部６８に対して図７に図示する位置まで下方に強制することによって口頸部６８に装着される。口頸部６８の上端部は、本体２における係止リブ１２とシール片１４との間に収容され、シール片１４が口頸部６８の内周面に密接されることによって口頸部６８が密封される。本体２における装着壁８の内周面下端部に形成されている突条１０が口頸部６８の外周面に形成されている係止あご部７４を弾性的に乗り越え、口頸部６２に本体２が拘束される。 Also shown in FIG. 7 is a per se well-known layered construction container neck 68 to which a container lid as described above constructed in accordance with the present invention is preferably applied. The illustrated container comprises a relatively thick outer layer 70 made of any suitable synthetic resin and a relatively thin inner layer 72 also made of any suitable synthetic resin. The main body 2 combined with the check valve member 4 is fitted over the neck portion 62 and is attached to the neck portion 68 by forcing it downward to the position shown in FIG. The upper end of the mouth/neck portion 68 is accommodated between the locking rib 12 and the seal piece 14 in the main body 2, and the seal piece 14 is brought into close contact with the inner peripheral surface of the mouth/neck portion 68, thereby closing the mouth/neck portion 68. Sealed. The protrusion 10 formed on the lower end of the inner peripheral surface of the mounting wall 8 of the main body 2 elastically climbs over the locking jaw portion 74 formed on the outer peripheral surface of the mouth/neck portion 68 , and the main body is attached to the mouth/neck portion 62 . 2 is constrained.

容器の内容物を消費しない通常の状態においては、本体２の外蓋３６は図７に実線で示す閉位置に位置せしめられている。かかる状態においては、外蓋３６のスカート壁４０の内周面に形成されている係止凹部５０が係止突条１８の外周面に係止され、これによって外蓋３２が閉位置に維持される。外蓋３６の天面壁３８の内面に形成されている外側シール４４及び内側シール片４６は、夫々、排出筒１６の先端外周面及び内周面に密接される。更に、外蓋３６の天面壁３８の内面に配設されている押圧筒４８の先端が逆止弁部材４における逆止弁５６の上壁６０に押圧され、これによって逆止弁５６の垂下壁６２の下端面によって規定されている着座面が、本体２の弁座部２８の上面によって規定されている弁座面に押圧され、逆止弁５６が閉位置に確実に維持される。 In the normal state of not consuming the contents of the container, the outer lid 36 of the body 2 is positioned in the closed position shown in solid lines in FIG. In this state, the engaging recess 50 formed in the inner peripheral surface of the skirt wall 40 of the outer lid 36 is engaged with the outer peripheral surface of the engaging projection 18, thereby maintaining the outer lid 32 in the closed position. be. An outer seal 44 and an inner seal piece 46 formed on the inner surface of the top wall 38 of the outer lid 36 are in close contact with the distal end outer peripheral surface and the inner peripheral surface of the discharge cylinder 16, respectively. Further, the tip of the pressing cylinder 48 disposed on the inner surface of the top wall 38 of the outer lid 36 is pressed against the upper wall 60 of the check valve 56 of the check valve member 4, thereby causing the check valve 56 to hang down. The seating surface defined by the lower end surface of 62 is pressed against the valve seat surface defined by the upper surface of the valve seat portion 28 of the main body 2 to reliably maintain the check valve 56 in the closed position.

例えば醤油である容器の内容物を消費する際には、外蓋３６の突起５２に指を掛けて外蓋３６を開方向（図７において時計方向）に旋回動せしめる。かくすると、ヒンジ手段４２の作用によって外蓋３６は図７に二点鎖線で示す開位置に位置せしめられる。次いで、容器の主部（図示していない）を把持して容器を傾動し、口頸部６２を下方に指向する。そして、容器の主部を適宜に圧搾する。かくすると、容器内圧が上昇し、これによって逆止弁部材４における逆止弁５６が上昇せしめられて、上記弁座面から上記着座面が上方に離隔され排出開口２９が開放され、内容物が排出開口２９を通して排出される。排出開口２９を通して排出される内容物の流動は排出筒１６によって案内される。
For example, when consuming the contents of the container, which is soy sauce, a finger is placed on the projection 52 of the outer lid 36 to pivot the outer lid 36 in the opening direction (clockwise in FIG. 7). Thus, the action of the hinge means 42 positions the outer lid 36 in the open position indicated by the two-dot chain line in FIG. Next, the main portion (not shown) of the container is grasped and the container is tilted so that the mouth/neck portion 62 is directed downward. Then, the main portion of the container is appropriately squeezed. As a result, the internal pressure of the container rises, which causes the check valve 56 in the check valve member 4 to rise, separating the seating surface upward from the valve seat surface to open the discharge opening 29 and release the contents. It is discharged through the discharge opening 29 . The flow of contents discharged through the discharge opening 29 is guided by the discharge tube 16 .

内容物の所要排出が終了すると、容器を正立状態に戻すと共に容器の主部の圧搾を開放する。かくすると、容器内圧が元の値に復帰し、逆止弁部材４の弾性接続片５８が弾性的に元の状態に復元し、これによって逆止弁５６が下降されて、上記着座面が上記弁座面に押圧され、排出開口２９が閉じられる。次いで、外蓋３６を閉位置に旋回動する。排出筒１６から排出されることなく排出筒１６内に残留した内容物は下方に流動し、本体２における弁座部２８の基部２６に形成されている溝３２（図２）を通って流下し、更に戻し穴３４を通って容器内に戻される。溝３２の横断面積は所定値に設定されている故に、内容物の一部はその表面張力によって溝３２内に滞留し、これによって溝３２が閉塞される（この点については、上記特許文献１及び２を参照されたい）。 When the required discharge of the contents is completed, the container is returned to the upright state and the compression of the main portion of the container is released. As a result, the internal pressure of the container returns to its original value, and the elastic connection piece 58 of the check valve member 4 is elastically restored to its original state, whereby the check valve 56 is lowered and the seating surface is moved to the above position. Pressing against the valve seat surface, the discharge opening 29 is closed. The outer lid 36 is then pivoted to the closed position. The contents remaining in the discharge cylinder 16 without being discharged from the discharge cylinder 16 flow downward and flow down through the groove 32 (FIG. 2) formed in the base 26 of the valve seat portion 28 in the main body 2. , and is returned into the container through the return hole 34 . Since the cross-sectional area of the groove 32 is set to a predetermined value, part of the contents stays in the groove 32 due to its surface tension, thereby closing the groove 32 (in this regard, see Patent Document 1 above). and 2).

以上、添付図面を参照して本発明に従って構成された容器蓋の好適実施形態について詳述したが、本発明はかかる実施形態に限定されるものではなく、本発明の範囲を逸脱することなく種々の変形乃至修正が可能であることは多言を要しない。 Although the preferred embodiments of the container lid constructed according to the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to such embodiments, and various modifications can be made without departing from the scope of the present invention. It goes without saying that variations and modifications of are possible.

２：本体
４：逆止弁部材
６：頂壁
８：装着壁
２０：保持壁
２２：弁座壁
２４：突条
２５：リブ
２６：基部
２８：弁座部
２９：排出開口
３０：接続壁
３２：溝
３４：戻し穴
３６：外蓋
４２：ヒンジ手段
５４：フランジ壁
５６：逆止弁
５８：弾性接続片
６０：上壁
６２：垂下壁
６６：密接壁
６８：容器の口頸部 2: Body 4: Check valve member 6: Top wall 8: Mounting wall 20: Retaining wall 22: Valve seat wall 24: Protrusion 25: Rib 26: Base 28: Valve seat 29: Discharge opening 30: Connection wall 32 : Groove 34: Return hole 36: Outer lid 42: Hinge means 54: Flange wall 56: Check valve 58: Elastic connection piece 60: Upper wall 62: Hanging wall 66: Close wall 68: Mouth and neck of container

Claims (6)

容器の口頸部に装着される、合成樹脂から一体に成形された本体と、該本体に装着される、合成樹脂から一体に成形された逆止弁部材とから構成され、
該本体は、円環形状頂壁、該頂壁の外周縁部から垂下する円筒形状装着壁、該頂壁の内周縁部から上方に突出する排出筒、該頂壁から垂下する円筒形状保持壁、及び該保持壁よりも半径方向内側に配設され且つ排出開口を規定する弁座面を有する弁座壁を含み、
該逆止弁部材は、円環形状フランジ壁、該フランジ壁よりも半径方向内側に配設され且つ該弁座面に対応する着座面を有する逆止弁、及び該フランジ壁に対して昇降動自在に該逆止弁を接続する、周方向に間隔をおいて配設された複数個の弾性変形自在な弾性接続片を含み、
該逆止弁部材における該フランジ壁が該本体の該保持壁に装着され、該逆止弁部材における該逆止弁の該着座面が該本体における該弁座壁の該弁座面に押圧されて該排出開口が閉じられる、
ことを特徴とする容器蓋。 Consists of a main body integrally molded from synthetic resin, which is attached to the mouth and neck of the container, and a check valve member integrally molded from synthetic resin, which is attached to the main body,
The main body includes an annular top wall, a cylindrical mounting wall depending from the outer peripheral edge of the top wall, a discharge cylinder projecting upward from the inner peripheral edge of the top wall, and a cylindrical retaining wall depending from the top wall. and a seat wall disposed radially inwardly of the retaining wall and having a seat surface defining a discharge opening;
The check valve member includes an annular flange wall, a check valve disposed radially inwardly of the flange wall and having a seating surface corresponding to the valve seat surface, and a check valve that moves up and down with respect to the flange wall. comprising a plurality of elastically deformable elastic connecting pieces arranged at intervals in the circumferential direction for freely connecting the check valve;
The flange wall of the check valve member is attached to the retaining wall of the body, and the seating surface of the check valve of the check valve member is pressed against the valve seat surface of the valve seat wall of the body. the discharge opening is closed by
A container lid characterized by: 該逆止弁部材の該逆止弁は、円形状上壁及び該上壁の外周縁部から垂下する円筒形垂下壁を有し、該着座面は該垂下壁の外周面下端部に形成されている、請求項１記載の容器蓋。 The check valve of the check valve member has a circular upper wall and a cylindrical depending wall depending from the outer peripheral edge of the upper wall, the seating surface being formed at the lower end of the outer peripheral surface of the depending wall. 2. The container closure of claim 1, wherein the container closure is 該本体の該弁座壁は、上方に延出する円筒形状基部、及び該基部の上端から半径方向内方に向かって下方に傾斜して延びる逆円錐台筒形状弁座部を有し、該弁座面は該弁座部の上面によって規定されている、請求項１又は２記載の容器蓋。 The valve seat wall of the body has an upwardly extending cylindrical base and an inverted frusto-conical tubular valve seat extending downwardly and radially inwardly from an upper end of the base; 3. The container lid according to claim 1, wherein the valve seat surface is defined by the upper surface of the valve seat portion. 該逆止弁部材は、該フランジ壁から垂下し、内周面下部が該本体における該弁座壁の該基部の外周面上部に密接される円筒形状密接壁を含み、該弁座壁の該基部の該外周面上部及び／又は該円筒形状密接壁の該内周面下部には、該弁座壁の該基部の該外周面上部と該円筒形状密接壁の該内周面下部との間に戻り流路を規定する少なくとも１個の溝が形成されており、
該本体における該保持壁の下端部と該弁座壁の下端部とは円環形状接続壁によって接続されており、該接続壁には該溝に対応して少なくとも１個の戻し穴が形成されている、請求項３記載の容器蓋。 The check valve member includes a cylindrical sealing wall depending from the flange wall, the lower inner peripheral surface of which is in close contact with the upper outer peripheral surface of the base of the valve seat wall of the body; Between the upper portion of the outer peripheral surface of the base and/or the lower portion of the inner peripheral surface of the cylindrical close contact wall, there is a gap between the upper portion of the outer peripheral surface of the base of the valve seat wall and the lower inner peripheral surface of the cylindrical close contact wall. at least one groove defining a return channel is formed in the
A lower end portion of the retaining wall and a lower end portion of the valve seat wall in the main body are connected by an annular connecting wall, and at least one return hole is formed in the connecting wall corresponding to the groove. 4. The container lid of claim 3, wherein 該本体は、該頂壁を覆う閉位置と該頂壁を露呈せしめる開位置との間を旋回自在に、周方向所定部位においてヒンジ手段を介して該頂壁に接続された外蓋を含み、該溝及び該戻し穴は該ヒンジ手段に対して直径方向反対側に配置されている、請求項４記載の容器蓋。 the body includes an outer cover connected to the top wall via hinge means at a predetermined circumferential position so as to be pivotable between a closed position covering the top wall and an open position exposing the top wall; 5. The container lid of claim 4, wherein said groove and said return hole are diametrically opposed with respect to said hinge means. 該本体の該保持壁の内周面上部には、周方向に連続して延在する１個の円環形状突条又は周方向に間隔をおいて周方向に延在する複数個の弧状突条が形成されていると共に、該円環形状突条又は該弧状突条よりも所定間隔だけ下方に、周方向に間隔をおいて上下方向に延在する複数個のリブが形成されており、該逆止弁部材における該フランジ壁の外周縁部を該本体の該保持壁の該円環形状突条又は該弧状突条と該リブとの間に弾性的に嵌入せしめることによって、該本体に該逆止弁部材が装着されている、請求項１から５までのいずれかに記載の容器蓋。 On the upper part of the inner peripheral surface of the holding wall of the main body, there is a circumferentially continuously extending circular annular projection or a plurality of circumferentially extending arcuate projections spaced apart in the circumferential direction. A plurality of ribs extending vertically at intervals in the circumferential direction are formed below the annular projection or the arc-shaped projection by a predetermined interval, By elastically fitting the outer peripheral edge of the flange wall of the check valve member between the annular projection or the arcuate projection of the retaining wall of the body and the rib, 6. A container lid as claimed in any preceding claim, wherein the check valve member is fitted.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150122845A1 (en) 2012-05-09 2015-05-07 Yorihisa Uetake Filtering discharge container
JP2016216050A (en) 2015-05-14 2016-12-22 東京ライト工業株式会社 cap
WO2017199697A1 (en) 2016-05-20 2017-11-23 東京ライト工業株式会社 Cap and discharge container
JP2018016349A (en) 2016-07-27 2018-02-01 日本クロージャー株式会社 Discharge cap

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729436B1 (en) * 1995-01-18 1997-04-04 Valois MONOBLOCK INTAKE VALVE PUMP AND MOLDING ASSEMBLY FOR SUCH A VALVE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150122845A1 (en) 2012-05-09 2015-05-07 Yorihisa Uetake Filtering discharge container
JP2016216050A (en) 2015-05-14 2016-12-22 東京ライト工業株式会社 cap
WO2017199697A1 (en) 2016-05-20 2017-11-23 東京ライト工業株式会社 Cap and discharge container
JP2018016349A (en) 2016-07-27 2018-02-01 日本クロージャー株式会社 Discharge cap

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