JP3556341B2

JP3556341B2 - Liquid discharge container

Info

Publication number: JP3556341B2
Application number: JP21264395A
Authority: JP
Inventors: 和仁桑原; 孝之後藤
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1995-07-27
Filing date: 1995-07-27
Publication date: 2004-08-18
Anticipated expiration: 2015-07-27
Also published as: JPH0938539A

Description

【０００１】
【発明の属する技術分野】
本発明は、収納液体を噴出、噴霧或いは泡放出させるヘッド押下げ式の液体吐出ポンプ容器に係る。
【０００２】
【従来の技術】
【発明が解決しようとする課題】
この種容器として、容器体と、該容器体内上部へ垂下し、底部に吸込み弁を有するシリンダと、該シリンダ内から起立する、内部に吐出弁を形成したステム上端にノズル付きヘッドを嵌着させ、かつ上方付勢させた作動部材とからなり、該作動部材を上下動させることによって、収納液体をノズルから吐出させるよう形成した液体吐出ポンプ容器が知られている。
【０００３】
上記従来容器では、気温上昇時等に、収納液体上方の容器体内空気が暖められて膨張して、収納液体の液面を加圧することで、容器体内液体が吸込み弁を開いてシリンダ内へ入り、更に吐出弁を開いて収納液体がノズルから漏出することがあった。
【０００５】
本発明は、吐出弁形成用の弁体を、ステム嵌合用の短筒部から垂設する肉薄弾性筒下端の弾性底壁に、左右対向面を相互に密着させた切り割りを穿設し、かつ肉薄弾性筒をシリンダ内の内圧変化に応じて上方および下方に弾性反転する筒部で形成することで、容器体内空気の膨張による液漏れを阻止でき、かつ液切れが良好となるよう設けた。
【０００６】
【課題を解決するための手段】
第１の手段として、容器体と、該容器体内上部へ垂下し、底部に吸込み弁を有するシリンダと、該シリンダ内から起立する、内部に吐出弁形成用の弁体を付設したステム上端にノズル付きヘッドを嵌着させ、かつ上方付勢された作動部材とからなる液体吐出ポンプ容器において、上記吐出弁形成用弁体３３を、ステム２７の下部内面に、半球状の弾性頂壁３４周縁から垂設した弾性筒部３５を水密に固着させ、かつその弾性頂壁３４に、左右対向面を相互に密着させた切り割り３７を穿設して形成した。
【０００７】
第２の手段として、容器体と、該容器体内上部へ垂下し、底部に吸込み弁を有するシリンダと、該シリンダ内から起立する、下部に吐出弁形成用の弁体を付設したステム上端にノズル付きヘッドを嵌着させ、かつ上方付勢された作動部材とからなる液体吐出ポンプ容器において、上記吐出弁形成用弁体３３を、ステム２７の下部内面に水密に固着させた短筒部３９から下方小径テ−パ状の肉薄弾性筒４０を垂設して、該肉薄弾性筒下端に付設した弾性底壁４１に、左右対向面を相互に密着させた切り割り４２を穿設して形成すると共に、上記肉薄弾性筒４０を、シリンダ６内の高圧化によって上方へ、かつシリンダ６内の負圧化によって下方へ、それぞれ弾性反転する筒部で形成した。
【０００８】
【発明の実施の形態】
図１ないし図３は、本発明容器の第１実施形態を示し、該実施形態において、１は容器体であり、液状洗剤等の液体を収納させている。
【０００９】
３はシリンダ部材であり、該シリンダ部材は、上端に付設した外向きフランジ４をパッキングを介して容器体１の口頸部２上端面へ係合させて、上部に吸気孔５を穿設したシリンダ６を容器体１内上部へ垂下すると共に、該シリンダの下部内面に複数縦設した縦板部７中間部内面に突部８を付設し、また、それ等縦板部７下方のシリンダ部分を小径部として、該小径部上端に内向きフランジ状の弁座９を付設し、更に、該小径部内面へ上端部を嵌着させて吸上げパイプ１０を容器体１内底部へ垂設し、また更に、上記外向きフランジ４内周縁から嵌合筒１１を起立している。
【００１０】
１３は吸込み弁形成用の弁筒であり、該弁筒は、下部内面に横設した底板下方筒部分を大径として、該大径部の上部外面に複数縦設した縦溝１４内上端部へ上記突部８を、弁筒の上下摺動が可能に嵌合させ、かつその大径部下端を上記弁座９へ当該弁筒の自重により着座させている。
【００１１】
１５は装着筒であり、該装着筒は、上記容器体１の口頸部２外面へ筒部１６を螺合させ、かつ該筒部上端の内向きフランジ１７下面と口頸部２上端面とで上記シリンダ部材３の外向きフランジ４とパッキングを挟持させている。
【００１２】
１９は螺合筒であり、該螺合筒は、上記シリンダ部材３の嵌合筒１１外面へ抜け出し不能に嵌合させた外筒部２０上端から、内向きフランジ状壁２１を介してシリンダ６内上部へ内筒部２２を垂設して、該内筒部下部を上記吸気孔５上方のシリンダ部分内面へ嵌合させ、かつその内筒部２２をシリンダ６内面との間に間隙をあけて下方へ延長形成して、後述筒状ピストン２６の上限位置を定め、また、内筒部２２の内面中間に、後述ステム２７の外径よりも内径を僅かに大として後述ステム２７外面との間に外気吸入用の小間隙を形成したガイド筒部２３を付設して、使用時にステム２７がぐらつくことを阻止し、かつ図３が示すヘッド押下げ状態で、そのガイド筒部２３内面が後述ステム嵌合筒２９の下端部外面へ水密に当接して、収納液体の漏出を阻止するよう形成している。
【００１３】
２５は作動部材であり、該作動部材は、上記シリンダ６内面へ嵌合させた筒状ピストン２６からステム２７を起立し、該ステム上部に、ノズル３０付きヘッド２８の頂壁下面から垂設したステム嵌合筒２９下部を固着させ、かつコイルスプリング３１により上方へ付勢させている。
【００１４】
３３は吐出弁形成用の弁体であり、該弁体は、上記ステム２７内下部に、半球面状の弾性頂壁３４周縁から垂設されかつ上記ステム２７の下部内径より小外径とした弾性筒部３５を挿入させ、かつ該弾性筒部の下端外面に付設した係合突部３６をステム２７の下端部内面に水密に固着させ、また、上記弾性頂壁３４に、左右対向面を相互に密着させた切り割り３７を穿設している。
【００１５】
第１の実施形態では、図１が示す状態からヘッド２８を押し下げると、シリンダ６内液体が加圧されて、弁体３３の弾性頂壁３４が弾性変形して切り割り３７が開口し、シリンダ６内収納液体がステム２７を通ってノズル３０から吐出される。
【００１６】
図４ないし図６は、本発明容器の第２の実施形態を示し、該実施形態では、ステム２７下部を大内径部２７ａとし、また吐出弁形成用の弁体３３を、ステム２７の大内径部２７ａ内面上部に水密に嵌合させた短筒部３９から下方小径テ−パ状の肉薄弾性筒４０を垂設して、また、該肉薄弾性筒下端に付設した半球状の弾性底壁４１に、左右対向面を相互に密着させた切り割り４２を穿設して形成すると共に、上記肉薄弾性筒４０を、シリンダ６内の高圧化によって上方へ、かつシリンダ６内の負圧化によって下方へ、それぞれ弾性反転する筒部で形成している。更に、上記短筒部３９下方の大内径部部分内面へ、短筒部３９の抜け落ちを阻止する補助筒部４３を嵌着させ、該補助筒部の内面中間部に付設した内向きフランジ状壁のフランジ孔内面で上記肉薄弾性筒４０の下端部を支持させている。
【００１７】
該実施形態では、図４が示す状態からヘッド２８を押し下げると、シリンダ６内液体が加圧されるため、弁体３３の肉薄弾性筒４０が、図５が示す状態を経て図６が示すように上方へ弾性反転し、かつ弾性底壁４１が弾性変形して切り割り４２が開口し、シリンダ６内液体がノズル３０から吐出される。また、該状態からヘッド２８を解放すると、筒状ピストン２６がコイルスプリング３１により押上げられて、シリンダ６内が負圧化するため、肉薄弾性筒４０が下方へ弾性反転し、次いでシリンダ６内の弁筒１３が上方摺動して、シリンダ６内へ容器体１胴部内の収納液体が吸上げられる。
【００１８】
尚、上記第１実施形態と同一部分については符号のみ施し、第２実施形態の説明を省略する。
上記各実施形態では、弁体３３を合成ゴムなどの弾性素材で成形し、また、コイルスプリング３１を除く各部材を合成樹脂材により適宜成形する。
【００２０】
【発明の効果】
本発明の場合は、吐出弁形成用の弁体33を、ステム27の下部内面に水密に固着させた短筒部39から下方小径テ−パ状の肉薄弾性筒40を垂設して、該肉薄弾性筒下端に付設した弾性底壁41に、左右対向面を相互に密着させた切り割り42を穿設して形成すると共に、肉薄弾性筒40を、シリンダ６内の高圧化によって上方へ、かつシリンダ６内の負圧化によって下方へ、それぞれ弾性反転する筒部で形成したから、室温の上昇により容器体１内空気が膨張して収納液体が液面が加圧されると、肉薄弾性筒40が上方へ弾性反転して、収納液体上方の空気が高圧化することを阻止することになり、よって、室温の上昇によってシリンダ６内液体がステム27へ押し出されてノズル30から液漏れする不都合が解消される。また、ヘッド28を押下げた状態から該ヘッドを解放すると、シリンダ６内が負圧化して、肉薄弾性筒40が下方へ弾性反転するため、ノズル30内液体がステム27内へ吸い戻されることとなり、よって、液切れが良好となってボタ落ちがなくなる。
【図面の簡単な説明】
【図１】本発明容器の第１実施形態を示す半断面図である。
【図２】同実施形態の吐出弁形成用弁体の斜視図である。
【図３】同実施形態をヘッドを押下げた状態で示す半断面図である。
【図４】本発明容器の第２実施形態を示す半断面図である。
【図５】同実施形態の作用を説明する要部拡大縦断面図である。
【図６】同実施形態の作用を説明する半断面図である。
【符号の説明】
３…シリンダ部材１５…装着筒１９…螺合筒
２５…作動部材３３…弁体[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a head-down type liquid discharge pump container that ejects, sprays, or discharges a stored liquid.
[0002]
[Prior art]
[Problems to be solved by the invention]
As this kind of container, a head with a nozzle is fitted to a container body, a cylinder having a suction valve at the bottom, which is suspended from an upper part of the container body, and a stem rising from the cylinder and having a discharge valve formed therein. 2. Description of the Related Art There is known a liquid discharge pump container including an operating member urged upward and formed so that a stored liquid is discharged from a nozzle by vertically moving the operating member.
[0003]
In the conventional container described above, when the temperature rises, the air inside the container above the stored liquid is warmed and expanded, and the liquid level of the stored liquid is pressurized, whereby the liquid inside the container opens the suction valve and enters the cylinder. Further, the discharge valve may be opened and the stored liquid may leak from the nozzle.
[0005]
The present invention provides a valve body for forming a discharge valve, by piercing a slit in which the left and right facing surfaces are in close contact with each other, on an elastic bottom wall of a lower end of a thin elastic cylinder that is vertically provided from a short cylinder portion for stem fitting, and By forming the thin elastic cylinder with a cylinder portion that elastically inverts upward and downward in response to a change in internal pressure in the cylinder, liquid leakage due to expansion of air in the container can be prevented, and the liquid can be efficiently drained.
[0006]
[Means for Solving the Problems]
As a first means, there is provided a container body, a cylinder hanging down to the upper part of the container body and having a suction valve at a bottom part, and a nozzle rising from the inside of the cylinder and having an upper end of a stem provided with a valve body for forming a discharge valve therein. In the liquid discharge pump container comprising the operating member which is fitted with the head and is urged upward, the discharge valve forming valve element 33 is attached to the lower inner surface of the stem 27 from the periphery of the hemispherical elastic top wall 34. The vertically extending elastic cylindrical portion 35 is fixed in a water-tight manner, and the elastic top wall 34 is formed by forming a slit 37 having left and right opposing surfaces in close contact with each other.
[0007]
As a second means, a container body, a cylinder hanging down to the upper part of the container body and having a suction valve at the bottom part, and a nozzle rising from the inside of the cylinder and having a lower end provided with a valve body for forming a discharge valve at a lower end of a nozzle In a liquid discharge pump container comprising a working head which is fitted with an attached head and urged upward, the discharge valve forming valve element 33 is formed from a short cylindrical portion 39 which is fixed to the lower inner surface of the stem 27 in a watertight manner. A thin elastic cylinder 40 having a tapered lower small diameter is vertically provided, and a slit 42 having left and right opposing surfaces in close contact with each other is formed in an elastic bottom wall 41 attached to the lower end of the thin elastic cylinder. The thin elastic cylinder 40 is formed of a cylindrical portion that is elastically inverted upward by increasing the pressure in the cylinder 6 and downward by decreasing the pressure in the cylinder 6.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 3 show a first embodiment of the container of the present invention, in which a container 1 stores a liquid such as a liquid detergent.
[0009]
Reference numeral 3 denotes a cylinder member. The cylinder member has an outward flange 4 attached to the upper end thereof engaged with the upper end surface of the mouth and neck portion 2 of the container body 1 through packing, and an intake hole 5 is formed in the upper portion. The cylinder 6 is hung down to the upper portion inside the container body 1, and a plurality of vertical plate portions 7 are vertically provided on the lower inner surface of the cylinder. Is provided as a small-diameter portion, an inward flange-shaped valve seat 9 is attached to the upper end of the small-diameter portion, and the upper end portion is fitted to the inner surface of the small-diameter portion, and a suction pipe 10 is vertically suspended from the inner bottom of the container body 1. Further, the fitting tube 11 is erected from the inner peripheral edge of the outward flange 4.
[0010]
Reference numeral 13 denotes a valve cylinder for forming a suction valve. The valve cylinder has a bottom plate lower cylinder portion provided laterally on a lower inner surface, and a plurality of vertical grooves 14 vertically provided on an upper outer surface of the large diameter portion. The protrusion 8 is fitted so that the valve cylinder can slide up and down, and the lower end of the large diameter portion is seated on the valve seat 9 by the weight of the valve cylinder.
[0011]
Reference numeral 15 denotes a mounting cylinder. The mounting cylinder has a cylindrical portion 16 screwed to the outer surface of the mouth and neck portion 2 of the container body 1, and has an inwardly facing flange 17 at the upper end of the cylindrical portion and an upper end surface of the mouth and neck portion 2. The packing is sandwiched between the outward flange 4 of the cylinder member 3 and the packing.
[0012]
Reference numeral 19 denotes a screwing cylinder. The screwing cylinder is connected to the cylinder 6 via an inward flange-like wall 21 from an upper end of an outer cylinder portion 20 fitted to the outer surface of the fitting cylinder 11 of the cylinder member 3 so as not to come out. An inner cylinder portion 22 is vertically provided on the inner upper portion, and the lower portion of the inner cylinder portion is fitted to the inner surface of the cylinder portion above the intake hole 5, and a gap is provided between the inner cylinder portion 22 and the inner surface of the cylinder 6. To extend downward to determine the upper limit position of the cylindrical piston 26 described later, and to form an intermediate portion between the inner surface of the inner cylindrical portion 22 and the outer diameter of the stem 27 to be slightly larger than the outer diameter of the stem 27 to be described later. A guide tube portion 23 having a small gap for intake of outside air is provided between the guide tube portion 23 to prevent the stem 27 from wobbling at the time of use. The lower end of the stem fitting cylinder 29 is brought into water-tight contact with It is formed so as to prevent leakage.
[0013]
Reference numeral 25 denotes an operating member. The operating member erects a stem 27 from a cylindrical piston 26 fitted to the inner surface of the cylinder 6 and vertically extends from the lower surface of the top wall of a head 28 with a nozzle 30 above the stem. The lower part of the stem fitting cylinder 29 is fixed and urged upward by a coil spring 31.
[0014]
Reference numeral 33 denotes a valve body for forming a discharge valve. The valve body is provided vertically below the inner periphery of the stem 27 from the periphery of the hemispherical elastic top wall 34 and has an outer diameter smaller than the inner diameter of the lower portion of the stem 27. The elastic cylindrical portion 35 is inserted, and the engaging protrusion 36 attached to the outer surface of the lower end of the elastic cylindrical portion is fixed to the inner surface of the lower end of the stem 27 in a watertight manner. Cuts 37 are provided in close contact with each other.
[0015]
In the first embodiment, when the head 28 is pushed down from the state shown in FIG. 1, the liquid in the cylinder 6 is pressurized, the elastic top wall 34 of the valve body 33 is elastically deformed, the slit 37 is opened, and the cylinder 6 is opened. The liquid stored therein is discharged from the nozzle 30 through the stem 27.
[0016]
FIGS. 4 to 6 show a second embodiment of the container according to the present invention. In this embodiment, the lower portion of the stem 27 is a large-diameter portion 27a, and the valve body 33 for forming the discharge valve is connected to the large-diameter of the stem 27. A thin-walled elastic tube 40 having a small tapered shape extending downward from a short cylindrical portion 39 fitted in a water-tight manner at the upper portion of the inner surface of the portion 27a, and a hemispherical elastic bottom wall 41 attached to the lower end of the thin elastic cylinder The thin elastic cylinder 40 is moved upward by increasing the pressure in the cylinder 6 and downward by decreasing the pressure in the cylinder 6. , Each of which is formed by a cylindrical portion that is elastically inverted. Further, an auxiliary cylindrical portion 43 for preventing the short cylindrical portion 39 from falling off is fitted to the inner surface of the large inner diameter portion below the short cylindrical portion 39, and an inward flange-shaped wall provided at an intermediate portion of the inner surface of the auxiliary cylindrical portion. The lower end of the thin elastic cylinder 40 is supported by the inner surface of the flange hole.
[0017]
In this embodiment, when the head 28 is depressed from the state shown in FIG. 4, the liquid in the cylinder 6 is pressurized, so that the thin elastic cylinder 40 of the valve body 33 passes through the state shown in FIG. Then, the elastic bottom wall 41 is elastically deformed upward, and the slit 42 is opened, so that the liquid in the cylinder 6 is discharged from the nozzle 30. When the head 28 is released from this state, the cylindrical piston 26 is pushed up by the coil spring 31 and the inside of the cylinder 6 becomes negative pressure, so that the thin elastic cylinder 40 elastically inverts downward, and then the cylinder 6 The valve cylinder 13 slides upward, and the liquid stored in the body of the container body 1 is sucked into the cylinder 6.
[0018]
Note that the same reference numerals are given to the same portions as those in the first embodiment, and the description of the second embodiment is omitted.
In the above embodiments, the valve body 33 is formed of an elastic material such as synthetic rubber, and each member except the coil spring 31 is formed of a synthetic resin material as appropriate.
[0020]
【The invention's effect】
In the case of the present invention, a valve body 33 for forming a discharge valve is provided by vertically extending a thin elastic cylinder 40 having a small taper shape downward from a short cylindrical portion 39 which is fixed to the lower inner surface of the stem 27 in a watertight manner. The elastic bottom wall 41 attached to the lower end of the thin elastic cylinder is formed by forming a slit 42 in which the left and right opposing surfaces are in close contact with each other, and the thin elastic cylinder 40 is moved upward by increasing the pressure in the cylinder 6, and Since the cylinders 6 are formed by the cylinder portions which are elastically inverted downward due to the negative pressure in the cylinder 6, when the air in the container body 1 expands due to the rise of the room temperature and the liquid level of the stored liquid is increased, the thin elastic cylinder is formed. 40 is resiliently inverted upward to prevent the air above the stored liquid from increasing in pressure, so that the liquid in the cylinder 6 is pushed out to the stem 27 by the rise in room temperature, and the liquid leaks from the nozzle 30. Is eliminated. When the head is released from the state where the head 28 is pushed down, the inside of the cylinder 6 becomes negative pressure and the thin elastic cylinder 40 elastically inverts downward, so that the liquid in the nozzle 30 is sucked back into the stem 27. As a result, the drainage of the liquid becomes good, and the dripping does not occur.
[Brief description of the drawings]
FIG. 1 is a half sectional view showing a first embodiment of the container of the present invention.
FIG. 2 is a perspective view of a discharge valve forming valve element of the embodiment.
FIG. 3 is a half sectional view showing the same embodiment in a state where a head is pushed down.
FIG. 4 is a half sectional view showing a second embodiment of the container of the present invention.
FIG. 5 is an enlarged vertical cross-sectional view of a main part for explaining the operation of the embodiment.
FIG. 6 is a half sectional view for explaining the operation of the embodiment.
[Explanation of symbols]
3 ... Cylinder member 15 ... Mounting cylinder 19 ... Screw cylinder 25 ... Activating member 33 ... Valve

Claims

A head with a nozzle is fitted to a container body, a cylinder hanging down from the top of the container body, having a suction valve at the bottom, and a stem erecting from the inside of the cylinder and having a valve body for forming a discharge valve provided at the bottom. And a valve body for forming a discharge valve, comprising: 33 The stem 27 A short cylinder part water-tightly attached to the lower inner surface of the 39 Tapered thin elastic cylinder from below 40 And an elastic bottom wall attached to the lower end of the thin elastic cylinder. 41 And the left and right facing surfaces are in close contact with each other 42 The thin elastic cylinder is formed by drilling 40 A liquid discharge pump container, which is formed by a cylindrical portion that elastically inverts upward when the pressure in the cylinder 6 is increased and downward when the pressure in the cylinder 6 is reduced.