WO2018220671A1 - Pompe d'éjection de liquide - Google Patents

Pompe d'éjection de liquide Download PDF

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Publication number
WO2018220671A1
WO2018220671A1 PCT/JP2017/019896 JP2017019896W WO2018220671A1 WO 2018220671 A1 WO2018220671 A1 WO 2018220671A1 JP 2017019896 W JP2017019896 W JP 2017019896W WO 2018220671 A1 WO2018220671 A1 WO 2018220671A1
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WO
WIPO (PCT)
Prior art keywords
coil spring
stem
cylinder
liquid jet
jet pump
Prior art date
Application number
PCT/JP2017/019896
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　照雄
Original Assignee
株式会社資生堂
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 株式会社資生堂 filed Critical 株式会社資生堂
Priority to PCT/JP2017/019896 priority Critical patent/WO2018220671A1/fr
Publication of WO2018220671A1 publication Critical patent/WO2018220671A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents

Definitions

  • the present invention relates to a liquid ejection pump for ejecting liquid contained in a container.
  • a liquid ejection pump for ejecting liquid contained in a container
  • a cylinder for storing the contents sucked up from the container and a cylinder spring standing up above the cylinder so as to be vertically movable in an upward biased state.
  • a liquid comprising: a stem; a piston linked to the stem and slidably arranged in the cylinder; and a pressing head mounted on an upper end portion of the stem and having a nozzle communicating with the stem.
  • the pressing head when using the liquid jet pump, especially in the initial stage of operation from the stationary state until the pressing head starts moving, the pressing head can be lightly pushed down. In the process of returning to the position, a liquid jet pump having a restoring force capable of reliably sucking up the contents from the container into the cylinder is required even if the contents have high viscosity.
  • the pressing head in a liquid ejection pump for ejecting liquid contained in a container, the pressing head can be lightly pressed down in the initial operation from the stationary state when the liquid ejection pump is used until the pressing head starts to move.
  • the pressing head in the process until the pressing head returns to the original position after the ejection of the contents, even if the contents are highly viscous, the contents are surely sucked into the cylinder from the container. It is an object of the present invention to provide a liquid jet pump having a restoring force that can be restored.
  • a cylinder for storing the contents sucked up from the inside of the container, and a stem standing above the cylinder so as to be movable up and down in an upward biased state by a coil spring An ejection pump comprising: a piston linked to the stem and slidably arranged in the cylinder; and a pressing head mounted on an upper end portion of the stem and having a nozzle communicating with the stem.
  • a non-linear characteristic coil spring as the coil spring, the operation of the pressing head is lightened at the beginning of the operation until it starts moving from the stationary state.
  • the pressing head is returned to its original position. In the restoration process until it returns to, it is found that sufficient restoring force is demonstrated, and the contents are surely sucked into the cylinder, and the present invention is completed. It came to that.
  • the present invention provides a cylinder for storing the contents sucked up from the inside of the container, a stem erected above the cylinder so as to be movable up and down by a coil spring, and a vertical slide in the cylinder linked to the stem.
  • An ejection pump comprising: a piston that is movably disposed; and a pressing head that is mounted on an upper end portion of the stem and has a nozzle that communicates with the stem.
  • the coil spring includes a non-linear characteristic coil spring It is a liquid jet pump characterized by being.
  • the present invention is the liquid jet pump, wherein the non-linear characteristic coil spring is an unequal pitch coil spring or a taper coil spring.
  • the present invention is the liquid jet pump, wherein the unequal pitch coil spring is an unequal pitch coil spring in which a coarse winding portion is formed on one end side and a dense winding portion is formed on the other end side. is there.
  • the present invention is the liquid jet pump, wherein the unequal pitch coil pulling is an unequal pitch coil spring in which coarse winding portions and dense winding portions are alternately formed.
  • the pressing head When using a liquid ejection pump, the pressing head can be pushed down with a small force in the initial stage of operation until the pressing head starts moving from a stationary state. Even a person can easily push down the pressing head to eject the contents.
  • liquid jet pump of the present invention will be described in detail below.
  • the liquid jet pump is a liquid jet pump that is attached to the mouth of the container (1) that contains the liquid contents, sucks the contents from the container by a pump mechanism, and jets them from the nozzle (FIG. 1).
  • the upper end of the cylinder (3) is connected to the mounting cap (10).
  • the cylinder By attaching the mounting cap to the mouth of the container (1), the cylinder is installed inside the container and is attached to the bottom of the cylinder.
  • the contents can be sucked into the cylinder through the raising pipe (11).
  • the contents stored in the container are not limited to liquids, but may be any fluid property that can be sucked up by a pump mechanism, and may be, for example, cream or gel.
  • the liquid jet pump has a cylinder (3) for storing the contents sucked up from the container, and a stem that stands up above the cylinder so as to move up and down in an upward biased state by a coil spring (4). (5), a piston (6) linked to the stem and slidably arranged in the cylinder, and a nozzle (7) attached to the upper end of the stem and communicating with the stem. And a pressing head (8).
  • FIG. 2 shows an example in which the stem (5) is configured by connecting the upper stem (5a) and the lower stem (5b) in the axial direction, but the stem (5) may be formed integrally.
  • a combination of the upper stem (5a) and the lower stem (5b) is simply a stem ( 5) and will be described.
  • the pump mechanism (12) is composed of a cylinder (3) and a piston (6).
  • the cylinder (3) is suspended from a mounting cap (10) for closing the mouth of the container, and a suction pipe (11) extending to the bottom of the container is connected to the lower part.
  • the poppet valve body (9) is disposed inside the cylinder (3) so as to be movable up and down, and forms a suction valve (13) between the lower end of the poppet valve body (9) and the inner surface of the bottom of the cylinder (3).
  • the stem (5) extends upward from the cylinder (3), and a communication hole (14) is opened on one side of the lower part.
  • the inner peripheral wall of the lower end is in sliding contact with the outer surface of the poppet valve body (9).
  • the upper end portion of the coil spring (4) is in contact with the bottom surface of the stem (5) and is supported from the outside in the radial direction by a portion continuous from the bottom surface of the stem (5).
  • the lower end portion of the coil spring (4) is in contact with the upper surface of the flange portion (9a) extending in the horizontal direction from the side surface of the poppet valve body, and is supported from the radially outer side by the inner surface of the cylinder (3).
  • the coil spring (4) is sandwiched between the bottom surface of the stem (5) and the top surface of the flange portion (9a) and supports the stem (5) in a state of being biased upward.
  • the position where the coil spring is disposed and the attachment method are not limited to this, and can be widely used as long as the stem (5) can be biased upward.
  • the liquid jet pump of the present invention is characterized in that the coil spring is a non-linear characteristic coil spring.
  • the non-linear characteristic has at least two numerical values for the spring constant, and when the deformation amount exceeds a predetermined threshold, the spring constant is switched from a small value to a large value, or the spring constant is continuously changed with respect to the contraction amount. It can be obtained by changing.
  • the operation of the pressing head can be lightened at the beginning of the operation from the stationary state to the start of movement, while the restoration process until the pressing head returns to its original position after the contents have been ejected In this case, a sufficient repulsive force is exerted, and the contents can be surely sucked into the cylinder.
  • non-linear characteristic coil spring an unequal pitch coil spring, a taper coil spring, a conical coil spring, a drum coil spring, a barrel coil spring, and a bell coil spring can be used. Moreover, the coil spring provided with the appropriate nonlinear characteristic can also be obtained by combining these.
  • Fig. 3 shows an example of an unequal pitch coil spring.
  • the densely wound portion having a small pitch mainly contracts at the beginning of contraction, and after the densely wound portion contracts, the coarsely wound portion contracts next. It becomes possible to adjust the elastic repulsive force of the spring in the initial stage and thereafter.
  • the length of 40 to 80% of the total length of the coil spring is composed of a rough winding portion, and the length of 20 to 60% is a dense winding portion. It is preferable to comprise.
  • the pitch of the spring of the coarsely wound portion is 2 to 6 mm
  • the pitch of the densely wound portion is 40 to 75% of the pitch of the coarsely wound portion. More preferably, it is preferably 40 to 60%.
  • the wire diameter of the spring in order to adjust the repulsive force according to the discharge amount, there are various variations in the wire diameter of the spring, but it is preferable to use a spring in the range of 0.6 to 0.9 mm ⁇ .
  • the pressing head can be pushed down lightly in the initial stage of operation from the stationary state until the pressing head starts to move.
  • the total length of the coil spring is preferably 110 to 160% of the length of the space in which the coil spring in the liquid jet pump is installed.
  • Fig. 4 shows changes in pressure with respect to the amount of contraction (stroke length) for an unequal pitch coil spring and a normal equal pitch coil spring.
  • the non-uniform pitch coil spring exhibits the same pressure as a normal coil spring at a stroke of 0 to 3 mm, but becomes stronger than a normal coil spring from a stroke of about 4 mm, and exhibits non-linear characteristics.
  • the unequal pitch coil spring can appropriately adjust the pressure against the stroke length by changing the configuration of the coarsely wound portion and the densely wound portion.
  • the unequal pitch coil spring can form a coarsely wound portion with a large pitch on one end side and a densely wound portion with a small pitch on the other end side.
  • the change in pitch from the coarsely wound portion to the densely wound portion may be continuous or stepwise.
  • the pitch of the spring can be changed also in the coarsely wound portion and the densely wound portion, and the change may be continuous or stepwise.
  • FIG. 3B shows an embodiment in which densely wound portions are disposed between the coarsely wound portions disposed at both ends of the spring.
  • FIG. 3C shows an embodiment in which densely wound portions are disposed at both ends of the spring, and a coarsely wound portion is disposed between the two closely wound portions.
  • Fig. 5 shows an example of a taper coil spring.
  • the taper coil spring refers to a spring in which the wire diameter is not uniform but is tapered. By using the taper coil spring, the spring constant can be continuously changed with respect to the contraction amount.
  • FIG. 6 shows examples of (a) conical coil springs, (b) drum coil springs, (c) barrel coil springs, and (d) bell-shaped coil springs. Since the spring constant is small in the portion where the coil diameter is large and the spring constant is large in the portion where the coil diameter is small, the spring constant can be continuously changed with respect to the contraction amount by using such a coil spring. it can.
  • FIG. 7 shows a change in the pressure of the liquid jet pump of the present invention incorporating a coil spring of unequal pitch and the conventional liquid jet pump incorporating a coil spring of equal pitch.
  • the graph shows the result of measuring the change in the pressing pressure (N) with respect to the stroke using a pressure measuring instrument (autograph). Since the pressing head starts to descend, the pressure (N) indicated by the stroke of 0.5 to 1 mm is the pressure felt by the user's finger.
  • the liquid jet pump incorporating a coil spring with an unequal pitch can keep the initial pressure (stroke 0.5-1 mm) low, while at the time it is fully pushed (stroke about 7.5 mm). It was confirmed that the pressure was close to the pressure (N) of the conventional liquid jet pump.
  • the coil springs of unequal pitch used for the measurement had a total length of 23 mm, a coil outer diameter of 7.3 mm, a wire diameter of 0.7 mm, a rough winding portion of 16 mm (about 70% of the total length), and a dense winding portion of 7 mm (full length). About 30%), the pitch of the coarsely wound portion is 2 mm, and the pitch of the closely wound portion is 1 mm.
  • the pitch of a conventional equal pitch coil spring for comparison is 2 mm.
  • the liquid jet pump of the present invention incorporating the coil springs of unequal pitch can push down the pressing head with a small force in the initial operation from the stationary state until the pressing head starts moving. It was confirmed that a sufficient repulsive force was exerted in the restoration process until the pressing head returned to the original position after the ejection of.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

Pompe d'éjection de liquide (1) comprenant un cylindre (3) qui stocke un contenu aspiré depuis l'intérieur d'un récipient, une tige (5) qui se dresse verticalement au-dessus du cylindre et peut se déplacer verticalement dans un état poussé vers le haut par un ressort hélicoïdal (4), un piston (6) qui est accouplé à la tige et est disposé de manière à pouvoir coulisser librement verticalement à l'intérieur du cylindre, et une tête de poussée vers le bas (8) qui est montée sur l'extrémité supérieure de la tige et dans laquelle est formée une buse (7) qui communique avec l'intérieur de la tige : le ressort hélicoïdal (4) est un ressort hélicoïdal ayant une caractéristique non linéaire ; la tête de poussée vers le bas peut être légèrement poussée vers le bas dans une période initiale de fonctionnement à partir d'un état fixe lorsque la pompe d'éjection de liquide doit être utilisée jusqu'à ce que la tête de poussée vers le bas commence à se déplacer ; et après éjection, la tête de poussée vers le bas retourne avec certitude à sa position d'origine.
PCT/JP2017/019896 2017-05-29 2017-05-29 Pompe d'éjection de liquide WO2018220671A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/019896 WO2018220671A1 (fr) 2017-05-29 2017-05-29 Pompe d'éjection de liquide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/019896 WO2018220671A1 (fr) 2017-05-29 2017-05-29 Pompe d'éjection de liquide

Publications (1)

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WO2018220671A1 true WO2018220671A1 (fr) 2018-12-06

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PCT/JP2017/019896 WO2018220671A1 (fr) 2017-05-29 2017-05-29 Pompe d'éjection de liquide

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023065554A1 (fr) * 2021-10-18 2023-04-27 富祥塑胶制品(上海)有限公司 Élément élastique pour une pompe à liquide, pompe à liquide et récipient pour produit cosmétique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3012183U (ja) * 1994-10-05 1995-06-13 河野樹脂工業株式会社 ディスペンサー
JP2001099207A (ja) * 1999-09-28 2001-04-10 Toyo Seikan Kaisha Ltd 合成樹脂製コイルばね、その製造方法、これに用いる金型およびこれを用いたポンプ
US20020003150A1 (en) * 1997-07-04 2002-01-10 Yannic Hermouet Hand-operated pump with a free floating sleeve piston
JP2008025619A (ja) * 2006-07-18 2008-02-07 Toska Co Ltd 可塑性材製の螺旋状部品及びその製造方法
WO2010050441A1 (fr) * 2008-10-31 2010-05-06 株式会社吉野工業所 Tête d’enfoncement pour pompe et pompe de décharge de type à tête d’enfoncement
JP2011006113A (ja) * 2009-06-26 2011-01-13 Taiki:Kk ウェットシートが収納された交換用ウェットシート容器、その容器の格納具及びそのセット
JP2013520308A (ja) * 2010-02-24 2013-06-06 アプター フランス エスアーエス 流体ディスペンサ部材及び当該流体ディスペンサ部材を含む流体ディスペンサ装置
WO2017050390A1 (fr) * 2015-09-25 2017-03-30 Sca Hygiene Products Ab Pompe de distribution de fluides

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3012183U (ja) * 1994-10-05 1995-06-13 河野樹脂工業株式会社 ディスペンサー
US20020003150A1 (en) * 1997-07-04 2002-01-10 Yannic Hermouet Hand-operated pump with a free floating sleeve piston
JP2001099207A (ja) * 1999-09-28 2001-04-10 Toyo Seikan Kaisha Ltd 合成樹脂製コイルばね、その製造方法、これに用いる金型およびこれを用いたポンプ
JP2008025619A (ja) * 2006-07-18 2008-02-07 Toska Co Ltd 可塑性材製の螺旋状部品及びその製造方法
WO2010050441A1 (fr) * 2008-10-31 2010-05-06 株式会社吉野工業所 Tête d’enfoncement pour pompe et pompe de décharge de type à tête d’enfoncement
JP2011006113A (ja) * 2009-06-26 2011-01-13 Taiki:Kk ウェットシートが収納された交換用ウェットシート容器、その容器の格納具及びそのセット
JP2013520308A (ja) * 2010-02-24 2013-06-06 アプター フランス エスアーエス 流体ディスペンサ部材及び当該流体ディスペンサ部材を含む流体ディスペンサ装置
WO2017050390A1 (fr) * 2015-09-25 2017-03-30 Sca Hygiene Products Ab Pompe de distribution de fluides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023065554A1 (fr) * 2021-10-18 2023-04-27 富祥塑胶制品(上海)有限公司 Élément élastique pour une pompe à liquide, pompe à liquide et récipient pour produit cosmétique

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