JP2020083328A - Discharger - Google Patents

Discharger Download PDF

Info

Publication number
JP2020083328A
JP2020083328A JP2018215013A JP2018215013A JP2020083328A JP 2020083328 A JP2020083328 A JP 2020083328A JP 2018215013 A JP2018215013 A JP 2018215013A JP 2018215013 A JP2018215013 A JP 2018215013A JP 2020083328 A JP2020083328 A JP 2020083328A
Authority
JP
Japan
Prior art keywords
cylinder
valve body
stem
piston
upward
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2018215013A
Other languages
Japanese (ja)
Other versions
JP7158253B2 (en
Inventor
貢 岩坪
Mitsugi Iwatsubo
貢 岩坪
徹也 石塚
Tetsuya Ishizuka
徹也 石塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Yoshino Kogyosho Co Ltd
Original Assignee
Kao Corp
Yoshino Kogyosho Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kao Corp, Yoshino Kogyosho Co Ltd filed Critical Kao Corp
Priority to JP2018215013A priority Critical patent/JP7158253B2/en
Publication of JP2020083328A publication Critical patent/JP2020083328A/en
Application granted granted Critical
Publication of JP7158253B2 publication Critical patent/JP7158253B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B05B11/106—Means for locking a pump or its actuation means in a fixed position in a retracted position, e.g. in an end-of-dispensing-stroke position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem

Landscapes

  • Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

To quickly restore and move a press-down head, a stem, a piston guide and a piston upward after discharging contents.SOLUTION: A cylinder 15 includes: a sliding cylindrical part 15a in which a piston 14 is vertically slidably fitted; and a storage cylindrical part 15b that is positioned under the sliding cylindrical part and in which a lower valve body 18 is disposed inside. The lower valve body includes: a valve body 34 that is placed on a peripheral edge part 15f of a lower opening of the storage cylindrical part in an inner surface of the storage cylindrical part so as to separate upward; and a valve protrusion 35 that extends upward from the valve body. A press-down head 16 is mounted in a limiting cylindrical 22. When a piston guide 17 is positioned at a drop end position, the piston guide pushes the valve body via the valve protrusion to the peripheral edge part of the lower end opening of the storage cylindrical part in the inner surface of the storage cylindrical part, respective inner peripheral surfaces of the sliding cylindrical part and the storage cylindrical part are connected without steps, and respective inner diameters of the sliding cylindrical part and the storage cylindrical part are equivalent to each other.SELECTED DRAWING: Figure 1

Description

本発明は、吐出器に関するものである。 The present invention relates to a dispenser.

従来から、例えば下記特許文献１に示されるような、容器本体の口部に装着される装着キャップと、装着キャップに、上方付勢状態で下方移動可能に貫設されたステムを有するポンプと、ステムの上端部に装着されるとともに、内容物を吐出する吐出孔が形成された押下ヘッドと、下降端位置に位置する押下ヘッドが離脱可能に装着され、押下ヘッドおよびステムの上方移動を規制する規制筒と、を備え、ポンプは、ステムの上下動に連係する筒状のピストンと、ピストンが上下摺動可能に嵌合された摺動筒部を有するシリンダと、ステムに固定され、ピストンの内側に挿通されたピストンガイドと、シリンダの下端開口を開閉する下部弁体と、を備える吐出器が知られている。
この種の吐出器として、シリンダが、摺動筒部より下方に位置し、内径が摺動筒部の内径より小さく、内側に下部弁体が配設された収容筒部を備え、押下ヘッドが規制筒に装着され、ピストンガイドが下降端位置に位置したときに、収容筒部内に離脱可能に嵌合され、この収容筒部内と摺動筒部内との連通を遮断するシール部をピストンガイドが備える構成が知られている。この吐出器では、押下ヘッドが規制筒に装着された状態で、シール部が収容筒部内に嵌合されるので、この状態で容器本体の内圧が上昇しても、容器本体内の内容物が、シリンダの摺動筒部内に進入するのを防ぐことができる。 Conventionally, for example, as shown in Patent Document 1 below, a mounting cap that is mounted on the mouth of a container body, and a pump having a stem that is pierced through the mounting cap so as to be movable downward in an upwardly biased state, A push-down head mounted on the upper end of the stem and having a discharge hole for discharging contents and a push-down head located at the descending end position are detachably attached to restrict upward movement of the push-down head and the stem. The pump includes a restriction cylinder, and the pump has a cylindrical piston that is linked to the vertical movement of the stem, a cylinder having a sliding cylinder portion in which the piston is vertically slidably fitted, and a piston fixed to the stem. A discharger including a piston guide inserted inside and a lower valve body that opens and closes a lower end opening of a cylinder is known.
As a dispenser of this type, the cylinder is provided below the sliding cylinder, the inner diameter is smaller than the inner diameter of the sliding cylinder, and the accommodating cylinder in which the lower valve body is arranged is provided. When the piston guide is attached to the restriction cylinder and is positioned at the lower end position, the piston guide is fitted to the inside of the housing cylinder so as to be detachable, and the seal part that blocks the communication between the inside of the housing cylinder and the inside of the sliding cylinder. Known configurations are provided. In this dispenser, since the seal portion is fitted in the accommodating cylinder portion with the pressing head attached to the regulation cylinder, even if the internal pressure of the container body rises in this state, the contents in the container body will not It is possible to prevent the entry into the sliding cylinder portion of the cylinder.

特開２０１５−１８２８０１号公報JP, 2005-182801, A

しかしながら、前記従来の吐出器では、下部弁体が開閉するシリンダの下端開口が、内径が摺動筒部の内径より小さい収容筒部に形成されているので、シリンダの下端開口を広くすることが困難で、容器本体内の内容物がシリンダの下端開口を通過するときの流通抵抗が高く、内容物の吐出後、押下ヘッド、ステム、ピストンガイド、およびピストンを上方に復元移動させるのに時間がかかるという問題があった。この問題は、内容物の粘度が高い場合に顕在化する。 However, in the above-described conventional dispenser, the lower end opening of the cylinder for opening and closing the lower valve body is formed in the accommodating cylinder portion whose inner diameter is smaller than the inner diameter of the sliding cylinder portion, so that the lower end opening of the cylinder can be widened. It is difficult, and the flow resistance when the contents in the container body pass through the lower end opening of the cylinder is high, and it takes time to restore and move the pushing head, the stem, the piston guide, and the piston upward after discharging the contents. There was a problem of this. This problem becomes apparent when the viscosity of the contents is high.

本発明は、このような事情を考慮してなされたもので、内容物の吐出後、押下ヘッド、ステム、ピストンガイド、およびピストンを上方に素早く復元移動させることができる吐出器を提供することを目的とする。 The present invention has been made in consideration of such circumstances, and provides a discharge head that can quickly restore and move the pressing head, the stem, the piston guide, and the piston upward after discharging the content. To aim.

上記課題を解決して、このような目的を達成するために、本発明の吐出器は、容器本体の口部に装着される装着キャップと、前記装着キャップに、上方付勢状態で下方移動可能に貫設されたステムを有するポンプと、前記ステムの上端部に装着されるとともに、内容物を吐出する吐出孔が形成された押下ヘッドと、下降端位置に位置する前記押下ヘッドが離脱可能に装着され、前記押下ヘッドおよび前記ステムの上方移動を規制する規制筒と、を備え、前記ポンプは、前記ステムの上下動に連係する筒状のピストンと、前記ピストンが上下摺動可能に嵌合された摺動筒部を有するシリンダと、前記ステムに固定され、前記ピストンの内側に挿通されたピストンガイドと、前記シリンダの下端開口を開閉する下部弁体と、を備え、前記シリンダは、前記摺動筒部より下方に位置し、内側に前記下部弁体が配設された収容筒部を備え、前記下部弁体は、前記収容筒部内に嵌合された嵌合部と、前記嵌合部の内側に配設され、前記収容筒部の内面における、前記収容筒部の下端開口の周縁部に、上方に向けて離反可能に載置された弁本体と、弾性変形可能に形成されるとともに、前記弁本体と前記嵌合部の内周面とを連結する連結片と、前記弁本体から上方に延びる弁突起と、を備え、前記押下ヘッドが前記規制筒に装着され、前記ピストンガイドが下降端位置に位置したときに、前記ピストンガイドが、前記弁突起を介して前記弁本体を、前記収容筒部の内面における、前記収容筒部の下端開口の周縁部に押し付け、前記摺動筒部および前記収容筒部の各内周面は、段差なく連なり、前記摺動筒部および前記収容筒部の各内径は、互いに同等になっている。 In order to solve the above problems and achieve such an object, the dispenser of the present invention is capable of moving downward with a mounting cap mounted on the mouth of the container body and with the mounting cap being biased upward. A pump having a stem penetrating through, a pressing head mounted on the upper end of the stem and having a discharge hole for discharging the contents, and the pressing head located at the descending end position are detachable. A restriction cylinder that is mounted and restricts upward movement of the pressing head and the stem; and the pump is fitted with a cylindrical piston that is linked to the vertical movement of the stem, and the piston is slidable up and down. A cylinder having a slidable tubular portion, a piston guide fixed to the stem and inserted into the inside of the piston, and a lower valve body that opens and closes a lower end opening of the cylinder. A housing cylinder portion that is located below the sliding cylinder portion and in which the lower valve body is disposed is provided inside, and the lower valve body includes a fitting portion that is fitted into the housing cylinder portion, and the fitting portion. And a valve main body that is disposed inside the container and that is mounted on the inner surface of the housing cylinder at a peripheral edge of the lower end opening of the housing cylinder so as to be separable upward and elastically deformable. In addition, a connecting piece that connects the valve body and the inner peripheral surface of the fitting portion, and a valve protrusion that extends upward from the valve body are provided, and the pressing head is attached to the restriction cylinder, and the piston guide is provided. Is located at the lower end position, the piston guide presses the valve body through the valve projection against the peripheral edge portion of the lower end opening of the accommodating cylinder portion on the inner surface of the accommodating cylinder portion, and slides. The inner peripheral surfaces of the tubular portion and the accommodating tubular portion are connected without any step, and the inner diameters of the sliding tubular portion and the accommodating tubular portion are equal to each other.

この発明によれば、摺動筒部および収容筒部の各内周面が段差なく連なり、摺動筒部および収容筒部の各内径が互いに同等になっているので、収容筒部の下端開口の内径を広くすることが可能になり、容器本体内の内容物がシリンダの下端開口を通過するときの流通抵抗を低減し、内容物の吐出後、押下ヘッド、ステム、ピストンガイド、およびピストンを上方に素早く復元移動させることができる。
押下ヘッドが規制筒に装着され、ピストンガイドが下降端位置に位置したときに（以下、保管状態という）、ピストンガイドが、弁突起を介して弁本体を、収容筒部の内面における、収容筒部の下端開口の周縁部に押し付けるので、保管状態で、容器本体の内圧が上昇しても、弁本体が、収容筒部の内面における、収容筒部の下端開口の周縁部から上方に離反して、容器本体内の内容物が、収容筒部内に進入するのを防ぐことができる。したがって、従来のように、収容筒部の内径を摺動筒部の内径より小さくし、保管状態で、ピストンガイドのシール部を収容筒部内に離脱可能に嵌合しなくても、保管状態で、容器本体の内圧が上昇したときに、容器本体内の内容物が、シリンダの摺動筒部内に到達するのを確実に防ぐことができる。 According to the present invention, since the inner peripheral surfaces of the sliding cylinder portion and the housing cylinder portion are continuously connected without a step, and the inner diameters of the sliding cylinder portion and the housing cylinder portion are equal to each other, the lower end opening of the housing cylinder portion is formed. It is possible to widen the inner diameter of the container, reduce the flow resistance when the contents in the container body pass through the lower end opening of the cylinder, and after the contents are discharged, press down the head, stem, piston guide, and piston. It can be quickly restored and moved upward.
When the push-down head is attached to the regulation cylinder and the piston guide is located at the lower end position (hereinafter referred to as a storage state), the piston guide causes the valve body to move through the valve protrusion and the accommodation cylinder on the inner surface of the accommodation cylinder. Since it is pressed against the peripheral edge of the lower end opening of the container, even if the internal pressure of the container body rises in the storage state, the valve main body separates upward from the peripheral edge of the lower end opening of the accommodating cylinder on the inner surface of the accommodating cylinder. Thus, it is possible to prevent the contents in the container body from entering the storage cylinder portion. Therefore, unlike the conventional case, the inner diameter of the housing tubular portion is made smaller than the inner diameter of the sliding tubular portion, and even if the seal portion of the piston guide is not detachably fitted in the housing tubular portion in the stored state, it can be stored in the stored state. It is possible to reliably prevent the contents inside the container body from reaching the inside of the sliding cylinder portion of the cylinder when the internal pressure of the container body rises.

ここで、前記収容筒部の内面における、前記収容筒部の下端開口の周縁部は、径方向の外側から内側に向かうに従い漸次、下方に向けて延び、前記弁本体において、前記収容筒部の内面における、前記収容筒部の下端開口の周縁部に当接する部分は、下方に向けて突の曲面状に形成されてもよい。 Here, the peripheral portion of the lower end opening of the accommodating cylinder on the inner surface of the accommodating cylinder gradually and downwardly extends from the outer side toward the inner side in the radial direction. A portion of the inner surface, which abuts on the peripheral edge portion of the lower end opening of the accommodating cylinder portion, may be formed in a curved surface projecting downward.

この場合、収容筒部の内面における、収容筒部の下端開口の周縁部（以下、弁座面という）が、径方向の外側から内側に向かうに従い漸次、下方に向けて延び、弁本体において、収容筒部の弁座面に当接する部分が、下方に向けて突の曲面状に形成されているので、弁本体と弁座面との間のシール性を確実に確保することができる。 In this case, the peripheral portion of the lower end opening of the housing tubular portion (hereinafter referred to as the valve seat surface) on the inner surface of the housing tubular portion gradually and downwardly extends from the outer side toward the inner side in the radial direction, and in the valve body, Since the portion of the accommodating tubular portion that abuts on the valve seat surface is formed in a curved surface projecting downward, it is possible to reliably ensure the sealability between the valve body and the valve seat surface.

また、前記ポンプは、前記ステムおよび前記ピストンガイドを一体に上方に向けて付勢するコイルスプリングを備え、前記嵌合部は、前記収容筒部の下端部内に嵌合された下部と、前記下部から上方に向けて延びる上筒部と、を備え、前記弁本体は、前記下部の内周面に前記連結片を介して連結され、前記上筒部の内周面に、径方向の内側に向けて突出し、全周にわたって連続して延びるとともに、上方を向く座面が形成された突条部が形成され、前記コイルスプリングの下端開口縁は、前記座面に当接し、前記弁突起は、前記嵌合部の内側に、前記嵌合部の内周面との間に径方向の隙間を設けた状態で挿通されてもよい。 Further, the pump includes a coil spring that urges the stem and the piston guide integrally upward, and the fitting portion includes a lower portion fitted in a lower end portion of the housing cylinder portion, and the lower portion. And an upper cylinder portion that extends upward from the valve body, the valve body is connected to the inner peripheral surface of the lower portion through the connecting piece, and the inner peripheral surface of the upper cylindrical portion is radially inward. A ridge having a seat surface that faces upward is formed while projecting toward and continuously extending over the entire circumference, the lower end opening edge of the coil spring abuts the seat surface, and the valve projection is It may be inserted in the fitting portion with a radial gap provided between the fitting portion and the inner peripheral surface of the fitting portion.

この場合、弁突起が、嵌合部の内側に、嵌合部の内周面との間に径方向の隙間を設けた状態で挿通されているので、この隙間を流通する内容物の流通抵抗を抑えることが可能になり、容器本体内の内容物を、シリンダ内に抵抗少なく円滑に導入することができる。したがって、内容物の吐出後、押下ヘッド、ステム、ピストンガイド、およびピストンを上方に素早く復元移動させることを確実に実現することができる。 In this case, since the valve protrusion is inserted inside the fitting portion with a radial clearance provided between the fitting and the inner peripheral surface of the fitting portion, the flow resistance of the contents flowing through this clearance Therefore, the contents in the container main body can be smoothly introduced into the cylinder with less resistance. Therefore, after the contents are discharged, it is possible to surely realize the upward movement of the pressing head, the stem, the piston guide, and the piston.

本発明によれば、内容物の吐出後、押下ヘッド、ステム、ピストンガイド、およびピストンを上方に素早く復元移動させることができる。 According to the present invention, the pushing head, the stem, the piston guide, and the piston can be quickly restored and moved upward after the contents are discharged.

本発明に係る一実施形態として示した吐出器の縦断面図であって、押下ヘッドが下降端位置に位置した状態を示す図である。It is a longitudinal cross-sectional view of a discharger shown as one embodiment according to the present invention, and is a view showing a state in which a push-down head is located at a descending end position. 本発明に係る一実施形態として示した吐出器の縦断面図であって、押下ヘッドが上昇端位置に位置した状態を示す図である。It is a longitudinal cross-sectional view of the ejector shown as one embodiment according to the present invention, and is a view showing a state in which the push-down head is located at the rising end position.

以下、図面を参照し、本発明の一実施形態に係る吐出器１について説明する。
本実施形態の吐出器１は、図１および図２に示されるように、容器本体Ｗの口部Ｗ２に装着される装着キャップ２１と、装着キャップ２１に、上方付勢状態で下方移動可能に貫設されたステム１１を有するポンプ２４と、ステム１１の上端部に装着されるとともに、内容物を吐出する吐出孔１６ａが形成された押下ヘッド１６と、下降端位置に位置する押下ヘッド１６が離脱可能に装着され、押下ヘッド１６およびステム１１の上方移動を規制する規制筒２２と、を備える。 Hereinafter, a dispenser 1 according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, the dispenser 1 of the present embodiment is configured so that the mounting cap 21 mounted on the opening W2 of the container body W and the mounting cap 21 can be moved downward while being biased upward. A pump 24 having a penetrating stem 11, a pressing head 16 mounted on an upper end of the stem 11 and having a discharge hole 16a for discharging contents, and a pressing head 16 positioned at a descending end position are provided. The control cylinder 22 is detachably mounted and restricts upward movement of the push head 16 and the stem 11.

ポンプ２４は、ステム１１の上下動に連係する筒状のピストン１４と、ピストン１４が上下摺動可能に嵌合された摺動筒部１５ａを有するシリンダ１５と、ステム１１に固定され、ピストン１４の内側に挿通されたピストンガイド１７と、シリンダ１５の下端開口を開閉する下部弁体１８と、シリンダ１５内に配設され、ピストンガイド１７を上方に付勢するコイルスプリング１９と、を備える。 The pump 24 includes a cylindrical piston 14 linked to the vertical movement of the stem 11, a cylinder 15 having a sliding cylinder portion 15a into which the piston 14 is vertically slidably fitted, and a piston fixed to the stem 11. The piston guide 17 is inserted inside, the lower valve body 18 that opens and closes the lower end opening of the cylinder 15, and the coil spring 19 that is disposed in the cylinder 15 and biases the piston guide 17 upward.

装着キャップ２１、ステム１１、規制筒２２、ピストン１４、シリンダ１５、およびコイルスプリング１９はそれぞれ、上下方向に延びる共通軸と同軸に配設されている。以下、この共通軸を軸線Ｏといい、上下方向から見て、軸線Ｏに交差する方向を径方向といい、軸線Ｏ回りに周回する方向を周方向という。 The mounting cap 21, the stem 11, the restricting cylinder 22, the piston 14, the cylinder 15, and the coil spring 19 are arranged coaxially with a common shaft extending in the vertical direction. Hereinafter, this common axis is referred to as an axis O, a direction intersecting with the axis O when viewed from above and below is referred to as a radial direction, and a direction that surrounds the axis O is referred to as a circumferential direction.

容器本体Ｗは、内容物の減少に伴って減容変形する可撓性を有する袋状のパウチＷ１と、パウチＷ１の上端部に固定され、口部Ｗ２を有するスパウトＷ３と、を備える。
ピストン１４は、シリンダ１５の内周面に摺接する外筒２８と、外筒２８の内側に配設された内筒２９と、外筒２８と内筒２９とを全周にわたって連結する環状の連結部２７と、を備える。
連結部２７は、外筒２８および内筒２９それぞれにおける上端部と下端部との間に位置する中間部同士を連結している。図２に示されるような、押下ヘッド１６およびステム１１が上昇端位置に位置する待機状態では、連結部２７の上面は、ステム１１の下端開口縁の下方に位置しており、押下ヘッド１６を押下したときに、ステム１１の下端開口縁が、連結部２７の上面に当接する。内筒２９は、ステム１１の下端部内に上下摺動自在に嵌合されている。 The container body W includes a flexible bag-shaped pouch W1 that is deformed and reduced in volume as the content decreases, and a spout W3 fixed to the upper end of the pouch W1 and having a mouth W2.
The piston 14 has an outer cylinder 28 slidingly contacting the inner peripheral surface of the cylinder 15, an inner cylinder 29 disposed inside the outer cylinder 28, and an annular coupling that couples the outer cylinder 28 and the inner cylinder 29 over the entire circumference. And a section 27.
The connecting portion 27 connects the intermediate portions located between the upper end portion and the lower end portion of each of the outer cylinder 28 and the inner cylinder 29. In the standby state in which the push-down head 16 and the stem 11 are located at the rising end position as shown in FIG. 2, the upper surface of the coupling portion 27 is located below the lower end opening edge of the stem 11, and the push-down head 16 is When pressed down, the lower end opening edge of the stem 11 contacts the upper surface of the connecting portion 27. The inner cylinder 29 is vertically slidably fitted in the lower end of the stem 11.

シリンダ１５の上部に径方向の外側に向けて突出するフランジ部１５ｄが全周にわたって形成され、フランジ部１５ｄが、容器本体Ｗの口部Ｗ２の上端開口縁上に配置されている。シリンダ１５は、摺動筒部１５ａより下方に位置し、内側に下部弁体１８が配設された収容筒部１５ｂと、収容筒部１５ｂから下方に向けて突出した連結筒部１５ｃと、を備える。
連結筒部１５ｃ内に、下端開口が容器本体Ｗの底部に位置する吸い上げパイプ１５ｅが嵌合されている。 A flange portion 15d that projects outward in the radial direction is formed on the top of the cylinder 15 over the entire circumference, and the flange portion 15d is arranged on the upper end opening edge of the mouth portion W2 of the container body W. The cylinder 15 includes a housing cylinder portion 15b located below the sliding cylinder portion 15a, in which the lower valve body 18 is disposed, and a connecting cylinder portion 15c protruding downward from the housing cylinder portion 15b. Prepare
A suction pipe 15e having a lower end opening located at the bottom of the container body W is fitted in the connecting cylinder portion 15c.

摺動筒部１５ａおよび収容筒部１５ｂの各内周面は、段差なく連なり、摺動筒部１５ａおよび収容筒部１５ｂの各内径は、互いに同等になっている。摺動筒部１５ａと収容筒部１５ｂとの接続部分の内周面には、押下ヘッド１６、ステム１１、およびピストンガイド１７が下降端位置に位置して、押下ヘッド１６が規制筒２２に螺着された保管状態で、ピストン１４の外筒２８の下端部が位置する。 The inner peripheral surfaces of the sliding tubular portion 15a and the housing tubular portion 15b are continuous without any step, and the inner diameters of the sliding tubular portion 15a and the housing tubular portion 15b are equal to each other. The pressing head 16, the stem 11, and the piston guide 17 are located at the descending end position on the inner peripheral surface of the connecting portion between the sliding cylinder portion 15a and the housing cylinder portion 15b, and the pressing head 16 is screwed onto the restriction cylinder 22. The lower end of the outer cylinder 28 of the piston 14 is located in the stored state.

装着キャップ２１は、環状の天壁部２１ａを備える有頂筒状に形成されている。装着キャップ２１の内周面に、口部Ｗ２に螺着される雌ねじ部が形成されている。
天壁部２１ａは、シリンダ１５のフランジ部１５ｄの上面に配置されている。天壁部２１ａの内側に、シリンダ１５のうち、フランジ部１５ｄより上方に位置する上端部が挿通されている。 The mounting cap 21 is formed in a cylindrical shape having a top wall portion 21a having an annular shape. On the inner peripheral surface of the mounting cap 21, a female screw portion that is screwed into the mouth portion W2 is formed.
The top wall portion 21a is arranged on the upper surface of the flange portion 15d of the cylinder 15. The upper end of the cylinder 15, which is located above the flange 15d, is inserted inside the top wall 21a.

ピストンガイド１７は、ステム１１内に嵌合され、ステム１１から下方に突出し、ピストン１４の内側を上下方向に貫いている。ピストンガイド１７は、ステム１１の下部内に嵌合された筒状の装着部３１を備える。装着部３１は、ステム１１の下端開口から下方に突出している。装着部３１の下端部に、径方向に開口する貫通孔３１ｂが形成されている。貫通孔３１ｂは、径方向の外側から見て、長辺が上下方向に真直ぐ延び、かつ短辺が上下方向の外側に向けて突の曲線状を呈する、上下方向に長い長方形状を呈する。 The piston guide 17 is fitted in the stem 11, projects downward from the stem 11, and penetrates the inside of the piston 14 in the vertical direction. The piston guide 17 includes a cylindrical mounting portion 31 fitted in the lower portion of the stem 11. The mounting portion 31 projects downward from the lower end opening of the stem 11. A through hole 31b that opens in the radial direction is formed at the lower end of the mounting portion 31. When viewed from the outside in the radial direction, the through hole 31b has a rectangular shape that is long in the vertical direction, in which the long side extends straight in the vertical direction and the short side has a protruding curved shape toward the outside in the vertical direction.

ピストンガイド１７は、装着部３１の下端部から下方に向けて突出する拡径部１３を備える。拡径部１３は有頂筒状に形成されている。拡径部１３の周壁部の内径および外径はそれぞれ、装着部３１の内径および外径より大きい。拡径部１３の周壁部の内径は、装着部３１の外径より大きい。拡径部１３の周壁部に、貫通孔が周方向に間隔をあけて複数形成されている。拡径部１３の周壁部の外周面と、シリンダ１５の内周面と、の間に隙間が設けられている。拡径部１３の天壁部のうち、径方向の外側部分は、周壁部の上端部から径方向の内側に向かうに従い漸次、上方に向けて延び、径方向の内側部分は、平坦に形成され、装着部３１の下端部に接続されている。 The piston guide 17 includes an enlarged diameter portion 13 protruding downward from the lower end portion of the mounting portion 31. The enlarged diameter portion 13 is formed in a cylindrical shape with a top. The inner diameter and the outer diameter of the peripheral wall portion of the expanded diameter portion 13 are larger than the inner diameter and the outer diameter of the mounting portion 31, respectively. The inner diameter of the peripheral wall portion of the enlarged diameter portion 13 is larger than the outer diameter of the mounting portion 31. A plurality of through holes are formed in the peripheral wall portion of the expanded diameter portion 13 at intervals in the circumferential direction. A gap is provided between the outer peripheral surface of the peripheral wall portion of the expanded diameter portion 13 and the inner peripheral surface of the cylinder 15. The radially outer portion of the top wall portion of the expanded diameter portion 13 gradually extends upward from the upper end of the peripheral wall portion toward the radially inner portion, and the radially inner portion is formed flat. , Is connected to the lower end of the mounting portion 31.

押下ヘッド１６およびステム１１が上昇端位置に位置する待機状態で、拡径部１３の天壁部における径方向の外側部分の上面に、ピストン１４の内筒２９の下端部が当接している。これにより、シリンダ１５内において、ピストン１４より下方に位置する部分と、ピストンガイド１７の貫通孔３１ｂと、の連通が遮断されている。
押下ヘッド１６を押下すると、拡径部１３の天壁部における径方向の外側部分の上面が、ピストン１４の内筒２９の下端部から下方に離れ、シリンダ１５内において、ピストン１４より下方に位置する部分と、ピストンガイド１７の貫通孔３１ｂと、が連通する。
押下ヘッド１６を押下して内容物を吐出した後、ステム１１が上方に復元移動する際に、拡径部１３の天壁部における径方向の外側部分の上面が、ピストン１４の内筒２９の下端部に当接することで、シリンダ１５内において、ピストン１４より下方に位置する部分と、ピストンガイド１７の貫通孔３１ｂと、の連通が遮断された状態で、ピストン１４が上方に復元移動する。 In the standby state in which the push-down head 16 and the stem 11 are located at the rising end position, the lower end portion of the inner cylinder 29 of the piston 14 is in contact with the upper surface of the radially outer portion of the top wall portion of the expanded diameter portion 13. As a result, communication between the portion of the cylinder 15 located below the piston 14 and the through hole 31b of the piston guide 17 is blocked.
When the pressing head 16 is pressed, the upper surface of the radially outer portion of the top wall portion of the expanded diameter portion 13 is separated downward from the lower end of the inner cylinder 29 of the piston 14, and is positioned below the piston 14 in the cylinder 15. The portion to be connected and the through hole 31b of the piston guide 17 communicate with each other.
After the pressing head 16 is pressed to discharge the contents, when the stem 11 is restored and moved upward, the upper surface of the radially outer portion of the top wall portion of the expanded diameter portion 13 is the inner cylinder 29 of the piston 14. By contacting the lower end portion, the piston 14 is restored and moved upward in a state where communication between a portion located below the piston 14 and the through hole 31b of the piston guide 17 in the cylinder 15 is blocked.

下部弁体１８は、押下ヘッド１６およびステム１１が上昇端位置に位置する待機状態で、シリンダ１５内において、ピストンガイド１７の下方に位置する部分に配設されている。下部弁体１８は収容筒部１５ｂ内に配設されている。
下部弁体１８は、収容筒部１５ｂ内に嵌合された嵌合部３３と、嵌合部３３の内側に配設され、シリンダ１５の下端開口を開閉する弁本体３４と、弾性変形可能に形成されるとともに、弁本体３４と嵌合部３３の内周面とを連結する連結片３４ａと、を備える。 The lower valve body 18 is arranged in a portion located below the piston guide 17 in the cylinder 15 in the standby state where the push-down head 16 and the stem 11 are located at the rising end position. The lower valve body 18 is arranged in the housing cylinder portion 15b.
The lower valve body 18 is elastically deformable with a fitting portion 33 fitted in the housing tubular portion 15b, a valve body 34 arranged inside the fitting portion 33 and opening/closing a lower end opening of the cylinder 15. The connection piece 34a is formed and connects the valve body 34 and the inner peripheral surface of the fitting portion 33.

嵌合部３３は、収容筒部１５ｂの下端部内に嵌合された下部３３ａと、下部３３ａから上方に向けて延びる上筒部３３ｂと、を備える。
下部３３ａは、下端部に位置し全周にわたって連続して延びる環状体と、環状体の上端開口縁と上筒部３３ｂの下端開口縁とを連結する連結部と、を備える。連結部は、軸線Ｏを径方向に挟む両側に各別に配置されている。
上筒部３３ｂの下端部の内周面に、径方向の内側に向けて突出し、全周にわたって連続して延びる突条部が形成されている。突条部に、上方を向く座面３３ｃが形成されており、座面３３ｃは、ピストンガイド１７の拡径部１３の天壁部の下面における外周縁部と上下方向で対向している。 The fitting portion 33 includes a lower portion 33a fitted in the lower end portion of the housing tubular portion 15b, and an upper tubular portion 33b extending upward from the lower portion 33a.
The lower portion 33a includes an annular body located at the lower end portion and extending continuously over the entire circumference, and a connecting portion that connects the upper end opening edge of the annular body and the lower end opening edge of the upper tubular portion 33b. The connecting portions are separately arranged on both sides sandwiching the axis O in the radial direction.
On the inner peripheral surface of the lower end portion of the upper cylindrical portion 33b, there is formed a ridge portion that protrudes inward in the radial direction and continuously extends over the entire circumference. A seat surface 33c that faces upward is formed on the ridge portion, and the seat surface 33c faces the outer peripheral edge portion on the lower surface of the top wall portion of the expanded diameter portion 13 of the piston guide 17 in the vertical direction.

弁本体３４は、収容筒部１５ｂの内面における、収容筒部１５ｂの下端開口の周縁部（以下、弁座面という）１５ｆに、上方に向けて離反可能に載置されている。弁座面１５ｆは、径方向の外側から内側に向かうに従い漸次、下方に向けて延びている。弁本体３４は、嵌合部３３の下部３３ａの内側に配設されている。弁本体３４は、嵌合部３３の下部３３ａにおける前記環状体の内周面に、弾性変形可能な連結片３４ａを介して連結されている。弁本体３４は、上下方向から見て円形状を呈する。弁本体３４において、収容筒部１５ｂの弁座面１５ｆに当接する部分は、下方に向けて突の曲面状に形成されている。 The valve main body 34 is placed on the inner surface of the housing tubular portion 15b so as to be separable upward on a peripheral edge portion (hereinafter, referred to as a valve seat surface) 15f of a lower end opening of the housing tubular portion 15b. The valve seat surface 15f gradually extends downward from the outer side toward the inner side in the radial direction. The valve body 34 is arranged inside the lower portion 33 a of the fitting portion 33. The valve body 34 is connected to the inner peripheral surface of the annular body in the lower portion 33a of the fitting portion 33 via an elastically deformable connecting piece 34a. The valve body 34 has a circular shape when viewed from above and below. In the valve body 34, a portion of the housing cylinder portion 15b that abuts the valve seat surface 15f is formed in a curved surface projecting downward.

下部弁体１８は、シリンダ１５内の加圧時に、シリンダ１５の下端開口を閉塞したままに維持し、シリンダ１５内の減圧時に、シリンダ１５の下端開口を開放する逆止弁となっている。これにより、シリンダ１５内の加圧時に、シリンダ１５内の内容物がシリンダ１５の下端開口から容器本体Ｗ内に戻ることが阻止され、シリンダ１５内の減圧時に、容器本体Ｗ内の内容物がシリンダ１５の下端開口からシリンダ１５内に流入する。 The lower valve body 18 is a check valve that keeps the lower end opening of the cylinder 15 closed when the cylinder 15 is pressurized and opens the lower end opening of the cylinder 15 when the cylinder 15 is depressurized. As a result, when the pressure in the cylinder 15 is increased, the content in the cylinder 15 is prevented from returning from the lower end opening of the cylinder 15 into the container body W, and when the pressure in the cylinder 15 is reduced, the content in the container body W is It flows into the cylinder 15 through the lower end opening of the cylinder 15.

さらに本実施形態では、下部弁体１８は、弁本体３４から上方に延びる弁突起３５を備える。
弁突起３５は、弁本体３４と一体に形成されている。弁突起３５は、軸線Ｏと同軸に配設された軸状に形成されている。弁突起３５の外径は、弁本体３４の外径より小さくなっている。弁突起３５は、嵌合部３３の内側に、嵌合部３３の内周面との間に径方向の隙間を設けた状態で挿通され、嵌合部３３の上端開口から上方に突出している。
押下ヘッド１６が規制筒２２に装着され、ピストンガイド１７が下降端位置に位置したときに、ピストンガイド１７の天壁部における径方向の内側部分の下面が、弁突起３５を下方に向けて押し込む。これにより、弁本体３４が、収容筒部１５ｂの弁座面１５ｆに押し付けられ、収容筒部１５ｂの下端開口がシールされる。 Further, in the present embodiment, the lower valve body 18 includes a valve protrusion 35 extending upward from the valve body 34.
The valve protrusion 35 is formed integrally with the valve body 34. The valve protrusion 35 is formed in a shaft shape arranged coaxially with the axis O. The outer diameter of the valve protrusion 35 is smaller than the outer diameter of the valve body 34. The valve protrusion 35 is inserted inside the fitting portion 33 with a radial gap provided between the fitting portion 33 and the inner peripheral surface of the fitting portion 33, and projects upward from the upper end opening of the fitting portion 33. ..
When the push-down head 16 is attached to the restriction cylinder 22 and the piston guide 17 is located at the lower end position, the lower surface of the radially inner portion of the top wall portion of the piston guide 17 pushes the valve protrusion 35 downward. .. As a result, the valve main body 34 is pressed against the valve seat surface 15f of the housing tubular portion 15b, and the lower end opening of the housing tubular portion 15b is sealed.

コイルスプリング１９は、ステム１１およびピストンガイド１７を一体に上方に向けて付勢する。
コイルスプリング１９の上端部は、ピストンガイド１７の拡径部１３内に挿入されている。コイルスプリング１９の上端部の外周面は、拡径部１３の内周面に当接、若しくは近接している。コイルスプリング１９の上端開口縁は、拡径部１３の天壁部の下面における外周縁部に当接している。
コイルスプリング１９の下端部は、下部弁体１８の上筒部３３ｂ内に挿入されている。コイルスプリング１９の下端部の外周面は、上筒部３３ｂの内周面に当接、若しくは近接している。コイルスプリング１９の下端開口縁は、下部弁体１８の座面３３ｃに当接している。 The coil spring 19 integrally biases the stem 11 and the piston guide 17 upward.
The upper end of the coil spring 19 is inserted into the expanded diameter portion 13 of the piston guide 17. The outer peripheral surface of the upper end portion of the coil spring 19 is in contact with or close to the inner peripheral surface of the expanded diameter portion 13. The upper opening edge of the coil spring 19 is in contact with the outer peripheral edge portion of the lower surface of the top wall portion of the expanded diameter portion 13.
The lower end of the coil spring 19 is inserted into the upper cylinder portion 33b of the lower valve body 18. The outer peripheral surface of the lower end portion of the coil spring 19 is in contact with or close to the inner peripheral surface of the upper tubular portion 33b. The lower end opening edge of the coil spring 19 is in contact with the seat surface 33c of the lower valve body 18.

押下ヘッド１６は、ステム１１の上端部内に嵌合された嵌合筒１６ｂと、嵌合筒１６ｂから径方向の外側に向けて突出し、その先端に吐出孔１６ａが形成された吐出筒１６ｃと、嵌合筒１６ｂを径方向の外側から囲う螺着筒１６ｄと、を備える。吐出筒１６ｃは、螺着筒１６ｄを径方向に貫いている。嵌合筒１６ｂのうち、ステム１１から上方に突出した部分の外周面に、全周にわたって連続して延びるシール突部１６ｅが形成されている。 The pressing head 16 includes a fitting cylinder 16b fitted in the upper end of the stem 11, a discharge cylinder 16c protruding outward from the fitting cylinder 16b in the radial direction, and a discharge hole 16a formed at the tip thereof. And a threaded cylinder 16d that surrounds the fitting cylinder 16b from the outside in the radial direction. The discharge cylinder 16c penetrates the threaded cylinder 16d in the radial direction. A seal projection 16e that continuously extends over the entire circumference is formed on the outer peripheral surface of the portion of the fitting cylinder 16b that projects upward from the stem 11.

規制筒２２は、シリンダ１５の上端部に外嵌された外嵌筒２２ａと、下降端位置に位置する押下ヘッド１６の螺着筒１６ｄが螺着される雄ねじ筒２２ｂと、を備える。 The restriction cylinder 22 includes an outer fitting cylinder 22a that is fitted onto the upper end of the cylinder 15, and a male screw cylinder 22b to which the screw fitting cylinder 16d of the push-down head 16 located at the descending end position is screwed.

雄ねじ筒２２ｂのうち、下部がシリンダ１５の上端部内に挿入され、かつ上部がシリンダ１５の上端部から上方に突出しており、この上部の外周面に雄ねじ部が形成されている。雄ねじ筒２２ｂの下部の外周面、およびシリンダ１５の上端部の内周面にはそれぞれ、互いに係合する回り止め部が形成されている。雄ねじ筒２２ｂの内周面と、ステム１１の外周面と、の間に、外部とピストン１４の外筒２８の内周面側とを連通する導入通路２５が形成されている。押下ヘッド１６およびステム１１が上昇端位置に位置する待機状態で、雄ねじ筒２２ｂの下端開口縁に、ピストン１４の外筒２８の上端開口縁が当接、若しくは近接する。 A lower portion of the male screw cylinder 22b is inserted into the upper end portion of the cylinder 15, an upper portion thereof projects upward from the upper end portion of the cylinder 15, and a male screw portion is formed on the outer peripheral surface of the upper portion. The outer peripheral surface of the lower portion of the male screw cylinder 22b and the inner peripheral surface of the upper end portion of the cylinder 15 are formed with detent portions that engage with each other. An introduction passage 25 is formed between the inner peripheral surface of the male screw cylinder 22b and the outer peripheral surface of the stem 11 so as to communicate the outside with the inner peripheral surface of the outer cylinder 28 of the piston 14. In the standby state in which the push-down head 16 and the stem 11 are located at the rising end position, the upper end opening edge of the outer cylinder 28 of the piston 14 comes into contact with or approaches the lower end opening edge of the male screw cylinder 22b.

雄ねじ筒２２ｂの上端開口縁に、上方に向けて突出するシール筒部２２ｃが形成されている。ステム１１、ピストンガイド１７、および押下ヘッド１６が下降端位置に位置して、押下ヘッド１６が規制筒２２に螺着された保管状態で、シール筒部２２ｃ内に、押下ヘッド１６のシール突部１６ｅが密に嵌合する。 A seal cylinder portion 22c protruding upward is formed at the upper opening edge of the male screw cylinder 22b. In the storage state in which the stem 11, the piston guide 17, and the pressing head 16 are located at the lower end position, and the pressing head 16 is screwed to the restriction tube 22, the seal protrusion of the pressing head 16 is inserted into the seal tube portion 22c. 16e is closely fitted.

以上のように構成された吐出器１の使用方法について説明する。 A method of using the discharger 1 configured as above will be described.

まず、下降端位置に位置する押下ヘッド１６を、規制筒２２に対して軸線Ｏ回りに回転させることで、押下ヘッド１６の螺着筒１６ｄの雌ねじ部と、規制筒２２の雄ねじ筒２２ｂの雄ねじ部と、の螺合を解除する。この際、押下ヘッド１６、ステム１１、およびピストンガイド１７が、シリンダ１５に対して上昇し、ピストンガイド１７の拡径部１３が、下部弁体１８の弁突起３５から上方に離れる。そして、コイルスプリング１９の上方付勢力によって、ピストンガイド１７、ステム１１、および押下ヘッド１６が一体に上昇する。この過程において、ピストンガイド１７の拡径部１３の天壁部における径方向の外側部分の上面が、ピストン１４の内筒２９の下端部に当接し、ピストン１４も上昇する。
これにより、シリンダ１５内が減圧することで、下部弁体１８の弁本体３４が、収容筒部１５ｂの弁座面１５ｆから上方に離反し、シリンダ１５の下端開口を開放し、容器本体Ｗ内の内容物が、吸い上げパイプ１５ｅを通してシリンダ１５内に流入する。 First, by rotating the push-down head 16 located at the descending end position about the axis O with respect to the restricting cylinder 22, the female screw portion of the screwing cylinder 16d of the press-down head 16 and the external screw thread of the male screw cylinder 22b of the restricting cylinder 22. Unscrew the section. At this time, the push-down head 16, the stem 11, and the piston guide 17 are raised with respect to the cylinder 15, and the expanded diameter portion 13 of the piston guide 17 is separated upward from the valve protrusion 35 of the lower valve body 18. Then, the upward biasing force of the coil spring 19 causes the piston guide 17, the stem 11, and the pressing head 16 to integrally rise. In this process, the upper surface of the radially outer portion of the top wall portion of the expanded diameter portion 13 of the piston guide 17 contacts the lower end portion of the inner cylinder 29 of the piston 14, and the piston 14 also rises.
As a result, the pressure inside the cylinder 15 is reduced, so that the valve body 34 of the lower valve body 18 is separated upward from the valve seat surface 15f of the housing cylinder portion 15b to open the lower end opening of the cylinder 15 and The contents of the above flow into the cylinder 15 through the suction pipe 15e.

そして、押下ヘッド１６を押下して、ステム１１およびピストンガイド１７を下降移動させると、まず、ピストンガイド１７の拡径部１３の天壁部における径方向の外側部分の上面が、ピストン１４の内筒２９の下端部から下方に離れて、シリンダ１５内において、ピストン１４より下方に位置する部分と、ピストンガイド１７の貫通孔３１ｂと、が連通し、また、ステム１１の下端開口縁が、ピストン１４の連結部２７の上面に当接する。さらに、この下降移動を継続すると、ピストン１４も下降移動することで、シリンダ１５内の内容物が、ピストンガイド１７における貫通孔３１ｂおよび装着部３１内を通して、ステム１１内に流入し、吐出孔１６ａから吐出される。
次に、押下ヘッド１６の押下を解除すると、コイルスプリング１９の上方付勢力によって、前述と同様に、ピストンガイド１７、ピストン１４、ステム１１、および押下ヘッド１６が上方に復元移動し、容器本体Ｗ内の内容物がシリンダ１５内に流入する。 Then, when the push head 16 is pushed down to move the stem 11 and the piston guide 17 downward, first, the upper surface of the radially outer portion of the top wall portion of the expanded diameter portion 13 of the piston guide 17 is positioned inside the piston 14. A portion located below the piston 14 in the cylinder 15 apart from the lower end portion of the tube 29 communicates with the through hole 31b of the piston guide 17, and the lower end opening edge of the stem 11 is It contacts the upper surface of the connecting portion 27 of 14. Further, when this downward movement is continued, the piston 14 also moves downward, so that the contents in the cylinder 15 flow into the stem 11 through the through hole 31b and the mounting portion 31 in the piston guide 17, and the discharge hole 16a. Is discharged from.
Then, when the pressing head 16 is released, the piston guide 17, the piston 14, the stem 11, and the pressing head 16 are restored and moved upward by the upward biasing force of the coil spring 19, and the container body W is moved. The contents inside flow into the cylinder 15.

以上説明したように、本実施形態による吐出器１によれば、摺動筒部１５ａおよび収容筒部１５ｂの各内周面が段差なく連なり、摺動筒部１５ａおよび収容筒部１５ｂの各内径が互いに同等になっているので、収容筒部１５ｂの下端開口の内径を広くすることが可能になり、容器本体Ｗ内の内容物がシリンダ１５の下端開口を通過するときの流通抵抗を低減し、内容物の吐出後、押下ヘッド１６、ステム１１、ピストンガイド１７、およびピストン１４を上方に素早く復元移動させることができる。 As described above, according to the dispenser 1 according to the present embodiment, the inner peripheral surfaces of the sliding cylindrical portion 15a and the accommodating cylindrical portion 15b are continuous without a step, and the inner diameters of the sliding cylindrical portion 15a and the accommodating cylindrical portion 15b are respectively formed. Are equal to each other, it is possible to widen the inner diameter of the lower end opening of the storage cylinder portion 15b, and reduce the flow resistance when the content in the container body W passes through the lower end opening of the cylinder 15. After the contents are discharged, the pressing head 16, the stem 11, the piston guide 17, and the piston 14 can be quickly restored and moved upward.

押下ヘッド１６が規制筒２２に装着され、ピストンガイド１７が下降端位置に位置したときに（以下、保管状態という）、ピストンガイド１７が、弁突起３５を介して弁本体３４を、収容筒部１５ｂの弁座面１５ｆに押し付けるので、保管状態で、容器本体Ｗの内圧が上昇しても、弁本体３４が弁座面１５ｆから上方に離反して、容器本体Ｗ内の内容物が、収容筒部１５ｂ内に進入するのを防ぐことができる。したがって、従来のように、収容筒部１５ｂの内径を摺動筒部１５ａの内径より小さくし、保管状態で、ピストンガイド１７のシール部を収容筒部１５ｂ内に離脱可能に嵌合しなくても、保管状態で、容器本体Ｗの内圧が上昇したときに、容器本体Ｗ内の内容物が、シリンダ１５の摺動筒部１５ａ内に到達するのを確実に防ぐことができる。 When the push-down head 16 is attached to the regulation cylinder 22 and the piston guide 17 is located at the lower end position (hereinafter, referred to as a storage state), the piston guide 17 causes the valve body 34 to pass through the valve protrusion 35 and the housing cylinder portion. Since it is pressed against the valve seat surface 15f of the container 15b, even if the internal pressure of the container body W rises in the storage state, the valve body 34 separates upward from the valve seat surface 15f and the contents in the container body W are stored. It is possible to prevent the entry into the tubular portion 15b. Therefore, unlike the conventional case, the inner diameter of the housing tubular portion 15b is made smaller than the inner diameter of the sliding tubular portion 15a, and the seal portion of the piston guide 17 is not detachably fitted into the housing tubular portion 15b in the storage state. Also, when the internal pressure of the container body W rises in the storage state, it is possible to reliably prevent the contents inside the container body W from reaching the inside of the sliding cylinder portion 15a of the cylinder 15.

また、収容筒部１５ｂの弁座面１５ｆが、径方向の外側から内側に向かうに従い漸次、下方に向けて延び、弁本体３４において、弁座面１５ｆに当接する部分が、下方に向けて突の曲面状に形成されているので、弁本体３４と弁座面１５ｆとの間のシール性を確実に確保することができる。 Further, the valve seat surface 15f of the accommodating tubular portion 15b gradually extends downward as it goes from the outer side to the inner side in the radial direction, and the portion of the valve body 34 that abuts the valve seat surface 15f projects downward. Since it is formed in a curved surface, the sealability between the valve body 34 and the valve seat surface 15f can be reliably ensured.

また、弁突起３５が、嵌合部３３の内側に、嵌合部３３の内周面との間に径方向の隙間を設けた状態で挿通されているので、この隙間を流通する内容物の流通抵抗を抑えることが可能になり、容器本体Ｗ内の内容物を、シリンダ１５内に抵抗少なく円滑に導入することができる。したがって、内容物の吐出後、押下ヘッド１６、ステム１１、ピストンガイド１７、およびピストン１４を上方に素早く復元移動させることを確実に実現することができる。 Further, since the valve protrusion 35 is inserted inside the fitting portion 33 with a radial gap provided between the fitting portion 33 and the inner peripheral surface of the fitting portion 33, the contents flowing through this gap are prevented. The flow resistance can be suppressed, and the contents in the container body W can be smoothly introduced into the cylinder 15 with little resistance. Therefore, after the contents are discharged, it is possible to surely realize that the pressing head 16, the stem 11, the piston guide 17, and the piston 14 are quickly restored and moved upward.

本発明は上記した実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。 The present invention is not limited to the above-described embodiments, but can be modified as appropriate without departing from the spirit of the invention.

例えば 前記実施形態では、規制筒２２として、下降端位置に位置する押下ヘッド１６が離脱可能に螺着される構成を示したが、これに限らず例えば、押下ヘッドが離脱可能にアンダーカット嵌合される構成にする等、適宜変更してもよい。
装着キャップ２１および規制筒２２は一体に形成されてもよい。
弁座面１５ｆは、例えば、軸線Ｏに直交する方向に延びる平坦面にするなど適宜変更してもよい。
弁本体３４において、収容筒部１５ｂの弁座面１５ｆに当接する部分は、例えば、軸線Ｏに直交する方向に延びる平坦面にするなど適宜変更してもよい。
シリンダ１５に、径方向に開口し、容器本体Ｗ内とシリンダ１５内とを連通する導入孔を形成してもよい。この導入孔は、図２に示されるような、前述の待機状態で、外筒２８の外周面に閉塞されてもよい。シリンダ１５に導入孔を形成した場合、容器本体Ｗは減容変形しなくてもよい。 For example, in the above-described embodiment, the configuration in which the pressing head 16 located at the lower end position is detachably screwed as the restricting cylinder 22 is shown, but the invention is not limited to this. The configuration may be changed or the like may be appropriately changed.
The mounting cap 21 and the regulation cylinder 22 may be integrally formed.
The valve seat surface 15f may be appropriately changed, for example, a flat surface extending in a direction orthogonal to the axis O.
The portion of the valve body 34 that abuts the valve seat surface 15f of the housing cylinder portion 15b may be appropriately changed, for example, a flat surface extending in a direction orthogonal to the axis O.
An introduction hole may be formed in the cylinder 15 so as to open in the radial direction and connect the inside of the container body W and the inside of the cylinder 15. The introduction hole may be closed on the outer peripheral surface of the outer cylinder 28 in the standby state as shown in FIG. When the introduction hole is formed in the cylinder 15, the container body W does not have to undergo volumetric deformation.

その他、本発明の趣旨を逸脱しない範囲で、上記した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、上記した変形例を適宜組み合わせてもよい。 Besides, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

１ 吐出器
１１ ステム
１４ ピストン
１５ シリンダ
１５ａ 摺動筒部
１５ｂ 収容筒部
１５ｆ 弁座面（周縁部）
１６ 押下ヘッド
１６ａ 吐出孔
１７ ピストンガイド
１８ 下部弁体
１９ コイルスプリング
２１ 装着キャップ
２２ 規制筒
２４ ポンプ
３３ 嵌合部
３３ａ 下部
３３ｂ 上筒部
３３ｃ 座面
３４ 弁本体
３４ａ 連結片
３５ 弁突起
Ｗ 容器本体
Ｗ２ 口部 1 Discharger 11 Stem 14 Piston 15 Cylinder 15a Sliding cylinder part 15b Storage cylinder part 15f Valve seat surface (peripheral part)
16 Depressing head 16a Discharge hole 17 Piston guide 18 Lower valve body 19 Coil spring 21 Mounting cap 22 Restriction cylinder 24 Pump 33 Fitting part 33a Lower part 33b Upper cylinder part 33c Seat surface 34 Valve body 34a Connecting piece 35 Valve protrusion W Container body W2 Mouth

Claims (3)

容器本体の口部に装着される装着キャップと、
前記装着キャップに、上方付勢状態で下方移動可能に貫設されたステムを有するポンプと、
前記ステムの上端部に装着されるとともに、内容物を吐出する吐出孔が形成された押下ヘッドと、
下降端位置に位置する前記押下ヘッドが離脱可能に装着され、前記押下ヘッドおよび前記ステムの上方移動を規制する規制筒と、を備え、
前記ポンプは、
前記ステムの上下動に連係する筒状のピストンと、
前記ピストンが上下摺動可能に嵌合された摺動筒部を有するシリンダと、
前記ステムに固定され、前記ピストンの内側に挿通されたピストンガイドと、
前記シリンダの下端開口を開閉する下部弁体と、を備え、
前記シリンダは、前記摺動筒部より下方に位置し、内側に前記下部弁体が配設された収容筒部を備え、
前記下部弁体は、前記収容筒部内に嵌合された嵌合部と、前記嵌合部の内側に配設され、前記収容筒部の内面における、前記収容筒部の下端開口の周縁部に、上方に向けて離反可能に載置された弁本体と、弾性変形可能に形成されるとともに、前記弁本体と前記嵌合部の内周面とを連結する連結片と、前記弁本体から上方に延びる弁突起と、を備え、
前記押下ヘッドが前記規制筒に装着され、前記ピストンガイドが下降端位置に位置したときに、前記ピストンガイドが、前記弁突起を介して前記弁本体を、前記収容筒部の内面における、前記収容筒部の下端開口の周縁部に押し付け、
前記摺動筒部および前記収容筒部の各内周面は、段差なく連なり、
前記摺動筒部および前記収容筒部の各内径は、互いに同等になっている、吐出器。 A mounting cap mounted on the mouth of the container body,
A pump having a stem that penetrates through the mounting cap so as to be movable downward while being biased upward;
A pressing head mounted on the upper end of the stem and having a discharge hole for discharging contents,
The pressing head located at the descending end position is detachably mounted, and a restriction cylinder for restricting upward movement of the pressing head and the stem is provided,
The pump is
A cylindrical piston linked to the vertical movement of the stem,
A cylinder having a sliding cylinder part in which the piston is fitted so as to be vertically slidable;
A piston guide fixed to the stem and inserted inside the piston,
A lower valve body that opens and closes a lower end opening of the cylinder,
The cylinder is provided below the sliding cylinder, and includes a storage cylinder in which the lower valve body is disposed,
The lower valve body is disposed inside the fitting portion fitted in the housing tubular portion, and is disposed inside the fitting portion, and on the inner surface of the housing tubular portion, at the peripheral edge portion of the lower end opening of the housing tubular portion. , A valve body that is placed so as to be separated upward, and a connecting piece that is formed so as to be elastically deformable and that connects the valve body and the inner peripheral surface of the fitting portion, and upward from the valve body. And a valve protrusion extending to
When the push-down head is attached to the restriction cylinder and the piston guide is located at the lower end position, the piston guide causes the valve body to move through the valve protrusion to the accommodating cylinder on the inner surface of the accommodating cylinder. Press on the peripheral edge of the lower end opening of the cylinder,
The inner peripheral surfaces of the sliding cylinder portion and the accommodation cylinder portion are continuously connected without a step,
The inner diameter of each of the sliding cylinder portion and the housing cylinder portion is equal to each other. 前記収容筒部の内面における、前記収容筒部の下端開口の周縁部は、径方向の外側から内側に向かうに従い漸次、下方に向けて延び、
前記弁本体において、前記収容筒部の内面における、前記収容筒部の下端開口の周縁部に当接する部分は、下方に向けて突の曲面状に形成されている、請求項１に記載の吐出器。 The inner peripheral surface of the lower end opening of the accommodating cylinder portion on the inner surface of the accommodating cylinder portion gradually and downwardly extends from the radially outer side toward the inner side,
The discharge according to claim 1, wherein in the valve body, a portion of the inner surface of the housing cylinder portion that abuts on a peripheral edge portion of the lower end opening of the housing cylinder portion is formed in a curved surface projecting downward. vessel. 前記ポンプは、前記ステムおよび前記ピストンガイドを一体に上方に向けて付勢するコイルスプリングを備え、
前記嵌合部は、前記収容筒部の下端部内に嵌合された下部と、前記下部から上方に向けて延びる上筒部と、を備え、
前記弁本体は、前記下部の内周面に前記連結片を介して連結され、
前記上筒部の内周面に、径方向の内側に向けて突出し、全周にわたって連続して延びるとともに、上方を向く座面が形成された突条部が形成され、
前記コイルスプリングの下端開口縁は、前記座面に当接し、
前記弁突起は、前記嵌合部の内側に、前記嵌合部の内周面との間に径方向の隙間を設けた状態で挿通されている、請求項１または２に記載の吐出器。 The pump includes a coil spring that urges the stem and the piston guide integrally upward.
The fitting portion includes a lower portion fitted in the lower end portion of the housing tubular portion, and an upper tubular portion extending upward from the lower portion,
The valve body is connected to the inner peripheral surface of the lower portion via the connecting piece,
On the inner peripheral surface of the upper tubular portion, a ridge portion is formed, which protrudes inward in the radial direction and continuously extends over the entire circumference, and in which a seat surface facing upward is formed.
The lower end opening edge of the coil spring contacts the seat surface,
The dispenser according to claim 1, wherein the valve projection is inserted inside the fitting portion with a radial gap provided between the fitting and the inner peripheral surface of the fitting portion.
JP2018215013A 2018-11-15 2018-11-15 ejector Active JP7158253B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018215013A JP7158253B2 (en) 2018-11-15 2018-11-15 ejector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018215013A JP7158253B2 (en) 2018-11-15 2018-11-15 ejector

Publications (2)

Publication Number Publication Date
JP2020083328A true JP2020083328A (en) 2020-06-04
JP7158253B2 JP7158253B2 (en) 2022-10-21

Family

ID=70906065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018215013A Active JP7158253B2 (en) 2018-11-15 2018-11-15 ejector

Country Status (1)

Country Link
JP (1) JP7158253B2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672857U (en) * 1993-03-25 1994-10-11 株式会社三谷バルブ Ejector
JPH10211948A (en) * 1997-01-28 1998-08-11 Yoshino Kogyosho Co Ltd Liquid-ejecting pump
JP2002192026A (en) * 2000-12-28 2002-07-10 Toyo Seikan Kaisha Ltd Pump
JP2013169983A (en) * 2012-02-20 2013-09-02 Puresuko Kk Pump device
JP2015182801A (en) * 2014-03-25 2015-10-22 株式会社吉野工業所 pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672857U (en) * 1993-03-25 1994-10-11 株式会社三谷バルブ Ejector
JPH10211948A (en) * 1997-01-28 1998-08-11 Yoshino Kogyosho Co Ltd Liquid-ejecting pump
JP2002192026A (en) * 2000-12-28 2002-07-10 Toyo Seikan Kaisha Ltd Pump
JP2013169983A (en) * 2012-02-20 2013-09-02 Puresuko Kk Pump device
JP2015182801A (en) * 2014-03-25 2015-10-22 株式会社吉野工業所 pump

Also Published As

Publication number Publication date
JP7158253B2 (en) 2022-10-21

Similar Documents

Publication Publication Date Title
KR102110129B1 (en) Cap
US11415120B2 (en) Waterproof emulsion pump with external spring
JP2020083327A (en) Discharger
KR20170078588A (en) Syringe container
JP2018122869A (en) Syringe container
JP3240348U (en) Eco-pump type cosmetic container
JP2020083328A (en) Discharger
JP6397761B2 (en) Dispenser
JP6148899B2 (en) Discharge container
JP6757655B2 (en) Coating container
JP7190807B2 (en) ejector
JP5959570B2 (en) cap
JP7386721B2 (en) Dispenser
JP6670678B2 (en) Accumulator type discharger
JP5993795B2 (en) Discharge container
JP7313235B2 (en) ejector
JP2017013811A (en) Discharge container
JP7012503B2 (en) Discharger
JP6920951B2 (en) Discharger
KR20160111165A (en) Dispenser
JP7365970B2 (en) Dispenser
JP2015182800A (en) pump
JP7386696B2 (en) foam dispenser
JP6655505B2 (en) Dispenser
JP2024018108A (en) Discharger

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190111

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210705

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20220418

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220426

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220609

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220913

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20221011

R150 Certificate of patent or registration of utility model

Ref document number: 7158253

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150