WO2024116521A1 - Dispositif de décharge - Google Patents

Dispositif de décharge Download PDF

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Publication number
WO2024116521A1
WO2024116521A1 PCT/JP2023/032133 JP2023032133W WO2024116521A1 WO 2024116521 A1 WO2024116521 A1 WO 2024116521A1 JP 2023032133 W JP2023032133 W JP 2023032133W WO 2024116521 A1 WO2024116521 A1 WO 2024116521A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
piston
holding member
relative
advances
Prior art date
Application number
PCT/JP2023/032133
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English (en)
Japanese (ja)
Inventor
信也 前田
Original Assignee
株式会社吉野工業所
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 株式会社吉野工業所 filed Critical 株式会社吉野工業所
Publication of WO2024116521A1 publication Critical patent/WO2024116521A1/fr

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  • the present invention relates to an ejector.
  • a dispenser has a first cylinder, a first piston that slides on the first cylinder, a second cylinder with a larger cross-sectional area than the first cylinder, a second piston that slides on the second cylinder, a holding member that advances and retreats with the first piston, the first cylinder, and the second piston relative to the second cylinder by external operation, an internal flow path that discharges fluid through a pump chamber defined by the first cylinder, the first piston, the second cylinder, and the second piston in response to the advancement and retreat of the holding member, and a pressure accumulator that moves the first piston from an open position that opens the internal flow path to a closed position that closes the internal flow path by a biasing force in a direction against an increase in the internal pressure of the pump chamber due to the advancement of the holding member relative to the second cylinder, and that moves the first piston to the open position after the holding member advances with the first piston, the first cylinder, and the second piston relative to the second cylinder by operation (see, for example, Patent Document 1).
  • the object of the present invention is to provide a pressure accumulation type dispenser that can easily achieve a large discharge volume.
  • One aspect of the present invention is as follows:
  • the retaining member has a cylindrical stem extending in the advancement/retraction direction, and a piston guide attached to an inner circumferential surface of the stem and having a seating portion,
  • the discharge device according to any one of [1] to [4], wherein the first piston has a seating portion that is spaced from the seating portion in the open position and that seats on the seating portion in the closed position.
  • the present invention provides a pressure-accumulator type dispenser that can easily achieve a large discharge volume.
  • FIG. 1 is a vertical cross-sectional view showing a discharge container having a discharger according to a first embodiment of the present invention in a state before operation.
  • 2 is a vertical cross-sectional view showing a state when an operation of pushing down the discharge container shown in FIG. 1 onto a nozzle head is started.
  • FIG. 3 is a vertical cross-sectional view showing a state in which the nozzle head is further pressed down from the state shown in FIG. 2 .
  • FIG. 4 is a vertical cross-sectional view showing a state in which the nozzle head is further pressed down from the state shown in FIG. 3 .
  • FIG. FIG. 11 is a vertical cross-sectional view showing a dispensing container having a dispenser according to a second embodiment of the present invention in a state before operation.
  • FIG. 6 is a vertical cross-sectional view showing a state when an operation of pushing down the discharge container shown in FIG. 5 onto the nozzle head is started.
  • FIG. 7 is a vertical cross-sectional view showing a state in which the nozzle head is further pressed down from the state shown in FIG. 6.
  • 8 is a vertical cross-sectional view showing a state in which the nozzle head is further pressed down from the state shown in FIG. 7 .
  • FIG. 11 is a vertical cross-sectional view showing a dispensing container having a dispenser according to a third embodiment of the present invention in a state before operation.
  • 10 is a vertical cross-sectional view showing a state when an operation of pushing down the discharge container shown in FIG. 9 onto the nozzle head is started.
  • FIG. 11 is a vertical cross-sectional view showing a state when an operation of pushing down the discharge container shown in FIG. 9 onto the nozzle head is started.
  • FIG. 11 is a vertical cross-sectional view showing a state in which the nozzle head is further pressed down from the state shown in FIG. 10 .
  • 12 is a vertical cross-sectional view showing a state in which the nozzle head is further pressed down from the state shown in FIG. 11 .
  • the dispenser 1 includes a first cylinder/second piston member 2, a first piston 3, a second cylinder 4, a stem member 5, a piston guide 6, a head body 7, a nozzle tip 8, a retaining member 9, an attachment cap 10, and a pipe 11, each of which is integrally formed of, for example, resin, and a valve body 12, a first biasing member 13, and a second biasing member 14, each of which is integrally formed of, for example, metal.
  • the head body 7 and the nozzle tip 8 form a nozzle head 15, and the nozzle head 15, the stem member 5, and the piston guide 6 form a retaining member 16.
  • the seating portion 3a of the first piston 3, the seated portion 6a of the piston guide 6, and the first biasing member 13 form a pressure accumulation portion 17.
  • the valve body 12, the first biasing member 13, and the second biasing member 14 are not limited to being made of metal, but may be made of, for example, resin.
  • the discharger 1 has an internal flow path 18, which has a pump chamber 18a, an upstream flow path 18b, and a downstream flow path 18c, and the downstream flow path 18c has a discharge port 18d.
  • the discharge container 19 has a dispenser 1, a container body 20, and a top lid 21.
  • the container body 20 has a cylindrical mouth 20a centered on the central axis O of the first cylinder 24 described below, a body 20b connected to the lower end of the mouth 20a, and a bottom connected to the lower end of the body 20b.
  • the mouth 20a may be configured to have a tubular shape other than a cylindrical shape, such as a square tube.
  • the container body 20 contains liquid contents as a fluid to be discharged by the dispenser 1. Note that the contents may be any fluid and are not limited to liquid.
  • the direction along the central axis O is also referred to as the forward/backward direction or the up/down direction
  • the direction from the mouth 20a toward the bottom along the forward/backward direction is also referred to as the forward direction or downward
  • the opposite direction is also referred to as the backward direction or upward
  • the direction along a straight line perpendicular to the central axis O is also referred to as the radial direction
  • the direction going around the central axis O is also referred to as the circumferential direction
  • a cross section including the central axis O is also referred to as a longitudinal cross section.
  • the second cylinder 4 has a larger cross-sectional area (i.e., the cross-sectional area of the inner circumferential surface) than the first cylinder 24.
  • the inner diameter of the second cylinder 4 is larger than the inner diameter of the first cylinder 24.
  • the second cylinder 4 and the first cylinder 24 may each have a tubular configuration other than a cylindrical shape.
  • the second cylinder 4 has an intake port 4a, and is held in the mouth portion 20a by attaching an attachment cap 10 to the mouth portion 20a.
  • the second cylinder 4 also has a second cylinder body 4b that is tubular about the central axis O and in contact with the second piston 25, a flange 4c that extends radially outward from the upper part of the second cylinder body 4b and is disposed on the upper end surface of the mouth portion 20a via a packing 22, and a second cylinder bottom portion 4d that extends radially inward from the lower part of the second cylinder body 4b and has an intake port 4a.
  • the second cylinder bottom 4d has a bottom wall 4e that extends radially inward from the lower part of the second cylinder body 4b and forms an annular shape centered on the central axis O, a bottom tube part 4f that extends upward from the inner peripheral edge of the bottom wall 4e and forms a cylindrical shape centered on the central axis O, a valve seat part 4g that extends radially inward from the upper end of the bottom tube part 4f and has an intake port 4a on the central axis O, and seats the valve body 12, a valve restricting part 4h that extends upward from the outer peripheral edge of the valve seat part 4g and restricts the rise of the valve body 12 that is spaced upward from the valve seat part 4g, and a number of vertical ribs 4i that are arranged at intervals in the circumferential direction and each extend radially and vertically across the part of the upper surface of the bottom wall 4e excluding the outer peripheral edge and the outer peripheral surface of the bottom tube part 4f.
  • the upper end of the pipe 11 is attached to the inner surface of the bottom tube portion 4f by fitting.
  • the suction valve 23 is made up of the valve body 12, the valve seat 4g, and the valve restriction portion 4h.
  • the suction valve 23 allows the movement of the contents from inside the container body 20 to the pump chamber 18a when the valve body 12 moves upward away from the valve seat 4g, while the valve body 12 seats downward on the valve seat 4g to prevent the movement of the contents in the opposite direction.
  • the suction valve 23 is not limited to a configuration having the valve body 12, the valve seat 4g, and the valve restriction portion 4h, and may be made up of an elastic valve such as a so-called three-point valve, for example.
  • the mounting cap 10 has a peripheral wall 10a attached to the outer circumferential surface of the mouth portion 20a, and a cap upper portion 10b that extends radially inward from the upper portion of the peripheral wall 10a and contacts the upper surface of the flange 4c, forming an annular shape centered on the central axis O.
  • the cap upper portion 10b has a lower annular wall 10c that extends radially inward from the upper end of the peripheral wall 10a and contacts the upper surface of the flange 4c, an outer cylindrical wall 10d that extends upward from the inner peripheral edge of the lower annular wall 10c, an upper annular wall 10e that extends radially inward from the upper end of the outer cylindrical wall 10d, and an inner cylindrical wall 10f that extends upward and downward from the inner peripheral edge of the upper annular wall 10e.
  • the first cylinder/second piston member 2 forms an annular shape centered on the central axis O, with the upper end portion forming the first cylinder 24 and the lower end portion forming the second piston 25.
  • the second piston 25 has a second sliding cylinder 25a and a second cylindrical shaft 25b.
  • the second sliding cylinder 25a constitutes the outer peripheral edge of the second piston 25 and slides vertically on the inner peripheral surface of the second cylinder body 4b.
  • the second cylindrical shaft 25b constitutes the radial inner peripheral edge of the second piston 25 and has a cylindrical shape extending vertically, with the lower end of the second cylindrical shaft 25b integrally connected to the second sliding cylinder 25a and the upper end of the second cylindrical shaft 25b integrally connected to the lower end of the first cylinder 24.
  • the anti-slip member 9 is annular about the central axis O, is attached integrally to the second cylinder 4, and prevents the second piston 25 from slipping out upward from the second cylinder 4. More specifically, the anti-slip member 9 has an anti-slip portion 9a having an outer peripheral surface that contacts the inner peripheral surface of the second cylinder body 4b, and a protruding portion 9b that protrudes radially outward from the upper portion of the anti-slip portion 9a and has a lower surface that faces the upper surface of the second cylinder 4.
  • the upper surface of the anti-slip portion 9a has a lower receiving portion 9c that is annularly concave about the central axis O and receives the lower end of the second biasing member 14.
  • the second piston 25 is prevented from coming out of the second cylinder 4 by the second piston 25 abutting upward against the retaining portion 9a.
  • Downward displacement of the retaining member 9 relative to the second cylinder 4 is prevented by the protruding portion 9b abutting downward against the upper surface of the second cylinder 4.
  • Upward displacement of the retaining member 9 relative to the second cylinder 4 is prevented by the portion of the retaining portion 9a that is outer circumferential than the lower receiving portion 9c abutting upward against the lower end surface of the inner cylindrical wall 10f of the mounting cap 10.
  • the second biasing member 14 is arranged around the central axis O and is composed of a compression spring that expands and contracts in the vertical direction.
  • the first cylinder 24 is annular about the central axis O and has a first cylinder body 24a and a restricting step 24b.
  • the first cylinder body 24a is cylindrical about the central axis O and contacts the first piston 3.
  • the restricting step 24b protrudes radially inward from the lower end of the first cylinder body 24a in a stepped shape.
  • the holding member 16 moves forward and backward (in forward and backward directions) with the first piston 3, the first cylinder 24, and the second piston 25 relative to the second cylinder 4 when pressed down from the outside via the nozzle head 15.
  • the retaining member 16 also has a cylindrical stem 5a that extends in the forward and backward directions around the central axis O, a piston guide 6 that is attached to the inner peripheral surface of the stem 5a and has a seating portion 6a, and a connecting portion 5b that is integrally connected to the stem 5a and radially outward from the stem 5a, and is biased in the backward direction by a second biasing member 14.
  • the stem member 5 is also composed of the stem 5a and the connecting portion 5b.
  • the piston guide 6 is rod-shaped and extends in the forward and backward directions around the central axis O.
  • the piston guide 6 also has an enlarged diameter portion 6b that enlarges below the stem 5a, and the enlarged diameter portion 6b has a seating portion 6a.
  • the first piston 3 is annular about the central axis O, and has a first sliding cylinder 3b and a first cylindrical shaft 3c.
  • the first sliding cylinder 3b constitutes the outer peripheral edge of the first piston 3, and slides in the forward and backward direction on the inner peripheral surface of the first cylinder body 24a.
  • the first cylindrical shaft 3c constitutes the radial inner peripheral edge of the first piston 3, and is cylindrical extending in the forward and backward direction, with the lower end of the first cylindrical shaft 3c integrally connected to the first sliding cylinder 3b.
  • the first cylindrical shaft 3c surrounds the outer peripheral surface of the piston guide 6, and advances and retreats relative to the piston guide 6.
  • the first cylindrical shaft 3c also slides in the forward and backward direction on the lower end of the outer peripheral surface of the stem 5a.
  • the first piston 3 has a seating portion 3a that seats on the seating portion 6a in the forward direction and moves away from the seating portion 6a in the backward direction in response to the forward and backward movement of the retaining member 16.
  • the connecting portion 5b of the retaining member 16 has a cylindrical engagement wall 5c that extends in the forward and backward directions around the central axis O radially outward from the stem 5a, a connecting wall 5d that connects the upper end of the engagement wall 5c to the outer peripheral surface of the stem 5a, and an upper receiving portion 5e that protrudes radially outward in a stepped shape from the upper end of the outer peripheral surface of the engagement wall 5c and receives the upper end of the second biasing member 14.
  • the second biasing member 14 biases the first cylinder 24 in the backward direction via an engagement portion 26 between the uneven portions of the inner peripheral surface of the engagement wall 5c of the connecting portion 5b and the outer peripheral surface of the first cylinder 24.
  • a first gap G1 of a predetermined size is set between the lower surface of the connecting wall 5d of the connecting portion 5b and the upper end surface of the first cylinder 24.
  • the first biasing member 13 is composed of a compression spring that is compressed by the connecting wall 5d of the connecting portion 5b and the first piston 3 in the forward and backward direction.
  • the head body 7 is attached to the upper end of the stem 5a.
  • the nozzle tip 8 is attached in a fitting groove provided on the side of the head body 7, forming a flow path between the head body 7 and the nozzle tip 8 for discharging (i.e. spraying) the contents in a mist form from the discharge port 18d.
  • the top surface of the head body 7 forms the operated part 15a that receives a push-down operation from the outside.
  • the nozzle head 15 advances and retreats together with the holding member 16 relative to the second cylinder 4 and the container body 20 in response to the push-down operation.
  • the internal flow path 18 has a pump chamber 18a, an upstream flow path 18b upstream of the pump chamber 18a, and a downstream flow path 18c downstream of the pump chamber 18a.
  • the pump chamber 18a is defined by the first cylinder 24, the first piston 3, the second cylinder 4, and the second piston 25.
  • the upstream flow path 18b is defined by the pipe 11.
  • the downstream flow path 18c is defined by the first piston 3, the stem 5a, the piston guide 6, and the nozzle head 15.
  • the discharge port 18d is provided in the nozzle tip 8, and is located at the most downstream part of the downstream flow path 18c.
  • the pressure accumulator 17 moves the first piston 3 from an open position that opens the internal flow passage 18 to a closed position that closes the internal flow passage 18 by the biasing force of the first biasing member 13 in a direction (i.e. downward) that resists the increase in the internal pressure of the pump chamber 18a caused by the advancement of the retaining member 16 relative to the second cylinder 4.
  • the seating portion 3a of the first piston 3 is separated from the seated portion 6a of the retaining member 16 in the open position, and seats on the seated portion 6a of the retaining member 16 in the closed position that is lower than the open position.
  • the first vertical gap G1 between the lower surface of the connecting wall 5d of the connecting portion 5b and the upper end surface of the first cylinder 24, the second vertical gap G2 between the lower end of the stem 5a and the first piston 3, the third vertical gap G3 between the lower end of the first sliding tube 3b of the first piston 3 and the upper surface of the regulating step portion 24b, and the biasing force of the first biasing member 13 are set so that the holding member 16 advances with the first piston 3 relative to the second cylinder 4 when pressed down, and advances with the second piston 25 after the first piston 3 has been moved to the open position; more specifically, the holding member 16 advances with the first piston 3 relative to the first cylinder 24 and then advances with the second piston 25 relative to the second cylinder 4 when pressed down.
  • the top lid 21 opens and closes the dispenser 1.
  • the top lid 21 has a cylindrical outer wall 21a centered on the central axis O, and a top wall 21b connected to the upper end of the outer wall 21a.
  • the lower end of the outer wall 21a is removably attached to the outer peripheral surface of the outer cylindrical wall 10d of the attachment cap 10.
  • the dispenser 1 of this embodiment is configured as described above, so it operates as follows when pressed down.
  • the first piston 3 abuts against the regulating step portion 24b in the forward direction, so that the seating portion 3a is maintained in a state separated from the seated portion 6a in the backward direction, and as a result, the pressing down operation is suppressed from becoming heavy.
  • the force of the second biasing member 14 causes the holding member 16 to retreat relative to the first cylinder 24, then the force of the first biasing member 13 causes the seating portion 3a to seat on the seated portion 6a, blocking the downstream flow path 18c, and then while in this seated state, the force of the second biasing member 14 causes the holding member 16, the first piston 3, and the first cylinder/second piston member 2 to retreat relative to the second cylinder 4 to their positions before the pushing operation. Also, due to this retreating action, the internal pressure of the pump chamber 18a decreases, opening the suction valve 23, and the contents flow from inside the container body 20 into the pump chamber 18a through the upstream flow path 18b.
  • a small amount of contents can be stored in the pressure accumulator 17 by the first cylinder 24, which has a smaller cross-sectional area than the second cylinder 4, and the first piston 3, and can be forcefully discharged, and after the initial stage of the pressing operation, a large amount of contents can be forcefully discharged by the second cylinder 4 and the second piston 25, and the operating force can also be reduced. Therefore, according to this embodiment, it is possible to easily achieve a large amount of discharge (spray) while preventing the cylinder stroke from becoming longer and preventing the pressing operation from becoming heavier.
  • the discharger 1 is not limited to a configuration in which the first piston 3 moves from the closed position to the open position due to the increased internal pressure of the pump chamber 18a as in this embodiment, but may be configured, for example, as in the second embodiment shown in Figures 5 to 8, in which the restricting step 24b moves the first piston 3 from the closed position to the open position by abutting against the first piston 3 as a result of the holding member 16 moving forward with the first piston 3 toward the first cylinder 24 by a pushing down operation.
  • the timing for moving the first piston 3 from the closed position to the open position can be determined by the downward stroke rather than the internal pressure of the pump chamber 18a.
  • the dispenser 1 is not limited to a configuration in which the holding member 16 advances toward the first cylinder 24 together with the first piston 3 and then advances toward the second cylinder 4 together with the second piston 25 when pressed down as in this embodiment (i.e., a configuration in which there is a first gap G1).
  • the holding member 16 may advance toward the second cylinder 4 together with the first piston 3 and the first cylinder 24 when pressed down, and after the first piston 3 is moved to the open position, it may advance toward the second cylinder 4 together with the second piston 25.
  • the portion connecting the lower end of the first cylinder 24 and the second sliding cylinder 25a of the second piston 25 is configured as an annular elastic portion 25c, and the annular elastic portion 25c can be elastically deformed to allow the first cylinder 24 to move downward relative to the second piston 25.
  • the annular elastic portion 25c can transmit the upward pulling force from the lower end of the first cylinder 24 to the second sliding cylinder 25a of the second piston 25.
  • the second sliding cylinder 25a of the second piston 25 and the annular elastic portion 25c are formed of an elastic material such as rubber or elastomer, and are integrally formed by insert molding or the like at the lower end of the first cylinder 24 made of resin.
  • An outer cylinder 27a of the support member 27 is arranged inside the second sliding cylinder 25a, and the elastic deformation of the second sliding cylinder 25a in the radially inward direction is regulated by the outer cylinder 27a of the support member 27.
  • the support member 27 has an inner cylinder 27b, an outer cylinder 27a, and a connecting portion 27c that connects the inner cylinder 27b and the outer cylinder 27a.
  • the connecting portion 27c is composed of multiple connecting pieces arranged in the circumferential direction.
  • the inner cylinder 27b is arranged slidably relative to the lower end of the inner circumferential surface of the first cylinder 24.
  • the dispenser 1 of the above-mentioned embodiment comprises a first cylinder 24, a first piston 3 sliding on the first cylinder 24, a second cylinder 4 having a larger cross-sectional area than the first cylinder 24, a second piston 25 sliding on the second cylinder 4, a retaining member 16 that advances and retreats with the first piston 3, the first cylinder 24, and the second piston 25 relative to the second cylinder 4 by external operation, and a pump chamber 18a that is partitioned by the first cylinder 24, the first piston 3, the second cylinder 4, and the second piston 25, and a retaining member 16 that retains the fluid through the pump chamber 18a.
  • the dispenser 1 has an internal flow path 18 that discharges in response to the forward and backward movement of the holding member 16, and a pressure accumulator 17 that moves the first piston 3 from an open position that opens the internal flow path 18 to a closed position that closes the internal flow path 18 by a biasing force in a direction that resists the increase in the internal pressure of the pump chamber 18a due to the forward movement of the holding member 16 relative to the second cylinder 4, and the holding member 16 can be modified as long as it is a dispenser 1 in which the holding member 16 advances with the first piston 3 relative to the second cylinder 4 when operated, and advances with the second piston 25 after the first piston 3 has been moved to the open position.
  • the dispenser 1 is not limited to a configuration in which the discharge port 18d dispenses the contents in a mist form.
  • the dispenser 1 is also not limited to a configuration in which the second biasing member 14 biases the first cylinder 24 in the backward direction via the engagement portion 26 between the connecting portion 5b and the first cylinder 24.
  • the dispenser 1 is also not limited to a configuration in which the connecting portion 5b presses the first cylinder 24 in the forward direction at the forward limit position relative to the first cylinder 24, and may be configured, for example, so that the lower end of the stem 5a presses the first cylinder 24 in the forward direction via the first piston 3 in the open position and the regulating step portion 24b.
  • the first cylinder 24 is not limited to a configuration having the regulating step portion 24b.
  • the second cylinder bottom portion 4d is not limited to a configuration having a plurality of vertical ribs 4i.
  • the second cylinder bottom 4d is not limited to a configuration having a bottom tubular portion 4f, and may be configured to have a bottom wall 4e, a valve seat portion 4b located below the bottom wall 4e, and a connecting wall 4j connecting the bottom wall 4e and the valve seat portion 4b, as shown in Fig. 5, etc.
  • the cap upper portion 10b of the mounting cap 10 is not limited to a configuration having a lower annular wall 10c, an outer tubular wall 10d, an upper annular wall 10e, and an inner tubular wall 10f, and may be configured to have a pressing portion 10g facing the upper surface of the flange 4c and the upper surface of the retaining member 9, and a peripheral wall portion 10h projecting upward from the pressing portion 10g radially outside the nozzle head 15, as shown in Fig. 5, etc.
  • the pressure accumulator 17 is not limited to a configuration having a seated portion 6a of the piston guide 6 and a seated portion 3a of the first piston 3.
  • the second biasing member 14 may be configured to bias the holding member 16 in the retracting direction via a portion other than the connecting portion 5b, and may be configured, for example, to be disposed between the upper surface of the mounting cap 10 and the lower surface of the nozzle head 15 to bias the nozzle head 15 upward.

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  • Closures For Containers (AREA)
  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

L'invention concerne un dispositif de décharge (1) comprenant : un premier cylindre (24) ; un premier piston (3) qui coulisse sur le premier cylindre (24) ; un second cylindre (4) ayant une surface de section transversale plus grande que le premier cylindre (24) ; un second piston (25) qui coulisse sur le second cylindre (4) ; un élément de maintien (16) qui est déplacé vers l'avant et vers l'arrière conjointement avec le premier piston (3), le premier cylindre (24) et le second piston (25) par rapport au second cylindre (4) par une opération externe ; un trajet d'écoulement interne (18) à travers lequel un fluide est évacué en fonction du mouvement vers l'avant/vers l'arrière de l'élément de maintien (16) par l'intermédiaire d'une chambre de pompe (18a) définie par le premier cylindre (24), le premier piston (3), le second cylindre (4) et le second piston (25) ; et une partie d'accumulation de pression (17) qui déplace le premier piston (3) d'une position ouverte au niveau de laquelle le trajet d'écoulement interne (18) est ouvert à une position fermée dans laquelle le trajet d'écoulement interne (18) est fermé, à l'aide d'une force de sollicitation dans une direction résistant à une augmentation de la pression interne de la chambre de pompe (18a) associée au mouvement vers l'avant de l'élément de maintien (16) par rapport au second cylindre (4). Par le fonctionnement, l'élément de maintien (16) est déplacé vers l'avant conjointement avec le premier piston (3) par rapport au second cylindre (4) pour déplacer le premier piston (3) vers la position ouverte et ensuite déplacé vers l'avant conjointement avec le second piston (25).
PCT/JP2023/032133 2022-03-25 2023-09-01 Dispositif de décharge WO2024116521A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2022050147 2022-03-25
JP2022189522A JP2023143670A (ja) 2022-03-25 2022-11-28 吐出器
JP2022-189522 2022-11-28

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WO2024116521A1 true WO2024116521A1 (fr) 2024-06-06

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PCT/JP2023/032133 WO2024116521A1 (fr) 2022-03-25 2023-09-01 Dispositif de décharge

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WO (1) WO2024116521A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11221500A (ja) * 1998-02-06 1999-08-17 Shiseido Co Ltd 蓄圧式液体噴出容器
JP2002102753A (ja) * 2000-09-29 2002-04-09 Yoshino Kogyosho Co Ltd 液体噴出ポンプ
JP2002219387A (ja) * 2001-01-24 2002-08-06 Mitani Valve Co Ltd 噴射ポンプおよびそれを備える噴出器
JP2015034017A (ja) * 2013-08-08 2015-02-19 大和製罐株式会社 蓄圧式噴霧容器
JP2022027159A (ja) * 2020-07-31 2022-02-10 株式会社吉野工業所 吐出器
JP2023051410A (ja) * 2021-09-30 2023-04-11 株式会社吉野工業所 吐出器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11221500A (ja) * 1998-02-06 1999-08-17 Shiseido Co Ltd 蓄圧式液体噴出容器
JP2002102753A (ja) * 2000-09-29 2002-04-09 Yoshino Kogyosho Co Ltd 液体噴出ポンプ
JP2002219387A (ja) * 2001-01-24 2002-08-06 Mitani Valve Co Ltd 噴射ポンプおよびそれを備える噴出器
JP2015034017A (ja) * 2013-08-08 2015-02-19 大和製罐株式会社 蓄圧式噴霧容器
JP2022027159A (ja) * 2020-07-31 2022-02-10 株式会社吉野工業所 吐出器
JP2023051410A (ja) * 2021-09-30 2023-04-11 株式会社吉野工業所 吐出器

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JP2023143668A (ja) 2023-10-06
JP2023143670A (ja) 2023-10-06

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