WO2023223580A1 - Pompe et récipient d'aspersion - Google Patents

Pompe et récipient d'aspersion Download PDF

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Publication number
WO2023223580A1
WO2023223580A1 PCT/JP2022/043563 JP2022043563W WO2023223580A1 WO 2023223580 A1 WO2023223580 A1 WO 2023223580A1 JP 2022043563 W JP2022043563 W JP 2022043563W WO 2023223580 A1 WO2023223580 A1 WO 2023223580A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
pump
piston seal
container
piston
Prior art date
Application number
PCT/JP2022/043563
Other languages
English (en)
Japanese (ja)
Inventor
敏男 富永
Original Assignee
株式会社三谷バルブ
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 株式会社三谷バルブ filed Critical 株式会社三谷バルブ
Publication of WO2023223580A1 publication Critical patent/WO2023223580A1/fr

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation

Definitions

  • the present invention relates to a pump that discharges liquid within a bottle.
  • a pump product that squirts liquid in a bottle has a structure in which a cylinder is fixed to the opening of the bottle, and a piston is inserted from the top end of the cylinder.
  • a push-down part for a user to push down the piston is connected to the upper end of the piston, and the push-down part is generally provided with a discharge port.
  • the discharge port is generally provided in the push-down part, so the discharge port moves up and down together with the push-down part and the piston, and when the user presses the push-down part, the operation Along with this, the discharge port also moves downward. Therefore, the position of the ejection port at the time when the liquid is ejected from the ejection port is lower than the position before being pressed down, which is inconvenient if you want to eject from the ejection port at a predetermined position. Therefore, it may be necessary to keep the position of the discharge port constant regardless of the pressing operation.
  • Patent Document 1 discloses a pump in which the discharge port does not move even if the user performs an operation to push down the piston. Specifically, a pump is disclosed in which the upper end of the cylinder extends upward and a discharge port is provided at the upper end of the cylinder.
  • the liquid in the cylinder passes through the inside of the piston and is pushed up to the upper end of the upper part of the piston (upper stem D2b), and the upper end of the piston and the cover that covers the upper end of the piston are pushed up. It passes through a gap with a member like this, is pushed out of the piston, and is discharged from the discharge port of the cylinder.
  • liquid passes through a gap between the upper end of the upper part of the piston D (upper stem D2b) and a member (lower circumferential wall part 55) like a cover that covers the upper part of the upper stem D2b, and the liquid flows through the upper end of the upper stem D2b. It is pushed out and discharged from the discharge port (nozzle 13) provided in the upper part of the cylinder B (seal tube portion 12). At this time, in order to guide the liquid pushed out to the outside of the upper stem D2b to the nozzle 13, seal members (upper seal portion 59 and a lower seal portion 66) are arranged.
  • the pump of Patent Document 1 has the seal cylinder portion 12 extending at the top of the cylinder B and the nozzle 13, so it is larger in height than a normal pump.
  • An object of the present invention is to provide a pump whose discharge port does not move and is compact.
  • this pump is a pump that discharges a liquid in a container, and includes a cylinder that has a space inside to store the liquid in the container, a piston whose lower end is inserted into the cylinder, and a piston that supports the cylinder and is connected to the container. It has a body that is attached to the opening, and a nozzle that discharges the liquid inside the cylinder to the outside.
  • the piston has an annular lower piston seal and an annular upper piston seal that are in airtight and slidable contact with the inner wall of the cylinder, and when the pressure in the cylinder exceeds a predetermined pressure, the liquid in the cylinder is transferred to the lower piston.
  • a flow path leading to the space between the seal and the upper piston seal is provided.
  • the body supports the top of the cylinder above the opening of the container such that the lower piston seal and the upper piston seal are located above the opening of the container.
  • the nozzle is located at least partially on the outer periphery of the body in a region corresponding to between the lower piston seal and the upper piston seal.
  • the cylinder is provided with a through hole that connects to the nozzle between the positions where the lower piston seal and the upper piston seal are in airtight contact with the inner wall of the cylinder.
  • FIG. 2 is a sectional view of the pump 1 attached to the container 2 of Embodiment 1.
  • FIG. 3 is a sectional view showing the state of the core when the pump 1 of the first embodiment is assembled.
  • FIG. 4 is a sectional view of a pump 400 attached to the container 2 of Embodiment 4.
  • FIG. 1 is a sectional view of a container 2 equipped with a pump 1
  • FIGS. 2(a-1) and 2(a-2) are a top view and a sectional view of the pump 1, respectively
  • FIG. 2(b) is a piston
  • FIG. 2(c) is a cross-sectional view when the piston 20 returns.
  • FIG. 3 is a sectional view of the cylinder 10 and piston 20 during assembly of the pump 1.
  • the pump 1 is attached to an opening 2a at the top of a container 2 containing a liquid.
  • the pump 1 sucks up the liquid in the container 2, applies pressure, and squirts it out.
  • the pump 1 includes a cylinder 10, a piston 20, a push-down part 30, a nozzle 60, a body 40, and a pipe 50.
  • the cylinder 10 has a space inside to suck up and store the liquid in the container 2.
  • An opening 13 is provided at the lower end of the cylinder 10 for sucking up the liquid in the container 2.
  • a ball 11 is disposed in the opening 13, which functions as a valve to prevent the liquid in the cylinder 10 from flowing back into the container 2.
  • a pipe 50 for guiding the liquid in the container 2 is connected to the opening 13 at the lower end of the cylinder 10 .
  • the lower end of the piston 20 is inserted into the cylinder 10.
  • the piston 20 includes an annular lower piston seal 21, an annular upper piston seal 22, a lower piston shaft 23 that pivotally supports the lower piston seal 21, and an upper piston shaft 24 configured integrally with the upper piston seal. ing. Both the lower piston seal 21 and the upper piston seal 22 are in airtight and slidable contact with the inner wall of the cylinder. The lower end of the upper piston shaft 24 is fixed to the upper end of the lower piston shaft 23.
  • a collar 23a is provided on the outer periphery of the lower piston shaft 23, and a lower elastic member 25 is disposed between the collar 23a and the inner wall near the lower end of the cylinder 10.
  • the lower elastic member 25 urges the lower piston shaft 23 upward against the inner wall of the cylinder 10.
  • An upper elastic member 26 is arranged between the lower piston seal 21 and the upper piston shaft 24.
  • the upper elastic member 26 urges the lower piston seal 21 downward with respect to the upper piston shaft 24.
  • the upper elastic member 26 and the lower elastic member 25 use springs here.
  • the spring constant of the upper elastic member 26 is larger than that of the lower elastic member 25.
  • the cylinder 10 is supported by the body 40 and attached to the opening of the container 2.
  • the body 40 includes an annular mounting part 41 mounted on the outer periphery of the opening of the container 2 and a cylindrical part 42 mounted on the mounting part 41.
  • the mounting portion 41 has a structure that is screwed onto the outer periphery of the opening of the container 2.
  • the cylinder 10 includes an engaging part 12 at the upper part of the outer circumference, and the engaging part 12 engages with the upper edge of the cylindrical part 42 of the body 40 to support the cylinder 10 within the cylindrical part 42.
  • the cylindrical portion 42 of the body 40 has a double structure of an inner tube 42a and an outer tube 42b.
  • the inner tube 42a and the outer tube 42b are partially connected.
  • the engaging portion 12 of the cylinder 10 is hooked onto and engaged with the upper edge of the inner cylinder 42a.
  • the inner wall of the inner cylinder 42a of the cylindrical portion 42 and the outer wall of the cylinder 10 are provided with a recess at one side and a convex portion at the other at corresponding locations 15 (see FIG. 2(b)).
  • the parts are mated. Due to this fitting, the space between the inner wall of the cylindrical portion 42 and the outer wall of the cylinder 10 is sealed.
  • the body 40 supports the upper part of the cylinder 10 at a position higher than the opening of the container 2.
  • the cylinder 10 is supported by the body such that the lower piston seal 21 and the upper piston seal 22 of the piston 20 are located above the opening of the container 2.
  • the ball 11 at the lower end of the cylinder 10 is located at the height of the mounting portion 41 of the body 40.
  • a nozzle 60 is attached to the outer periphery of the outer tube 42b of the cylindrical portion 42 of the body 40 for discharging the liquid inside the cylinder 10 to the outside.
  • the nozzle 60 is provided on the outer periphery of the outer tube 42b of the cylindrical portion 42 of the body 40.
  • the position where the nozzle 60 is provided is a position corresponding to between the lower piston seal 21 and the upper piston seal 22.
  • a piece 61 is arranged inside the nozzle 60 to narrow a flow path 63 inside the nozzle 60. Thereby, liquid can be ejected from the ejection port 62 at the tip of the nozzle 60.
  • the cylinder 10 is provided with a through hole 16 that is connected to the nozzle 60.
  • the position where the through hole 16 is provided is a region between the position where the lower piston seal 21 and the upper piston seal 22 are in airtight contact with the inner wall of the cylinder 10.
  • the lower end 21a of the lower piston seal 21 is in airtight contact with the inner wall of the cylinder 10.
  • the through hole 16 of the cylinder 10 may be located above the lower end 21a of the lower piston seal 21 and below the upper piston seal 22. In the example of FIG. 2(a-1), the through hole 16 is located above the lower end portion 21a of the lower piston seal 21. It is located below the upper end of the lower piston seal 21.
  • the upper end of the body 40 is covered with a bush 43.
  • the upper piston shaft 24 passes through the bush 43 so as to be movable up and down.
  • a push-down portion 30 is attached to the upper end of the upper piston shaft 24 and receives an operation of pushing the piston downward from the user.
  • the mounting portion 41 of the body 40 is fixed around the opening of the container 2 by screwing.
  • the nozzle 60 Since the nozzle 60 is provided in the body 40, the position of the nozzle 60 does not change even if the push-down part 30 and the piston 20 descend.
  • the nozzle 60 Since the nozzle 60 has a structure including a top 61 inside, the liquid flowing into the nozzle 60 travels through a narrow flow path 63 between the inner wall of the nozzle 60 and the top 61, and flows into the external space from the discharge port 62 all at once. It is squirted. As a result, a mist of liquid can be ejected from the ejection port 62.
  • the user can eject a mist of liquid toward the desired position.
  • the space 17 inside the cylinder is expanded, the space 17 becomes a negative pressure, the ball 11 is pushed up, and the opening 13 at the lower end of the cylinder 10 is opened.
  • the liquid in the container 2 is sucked up by the tube 50, passes through the opening 13 at the lower end of the cylinder 10, and fills the space 17 within the cylinder 10.
  • the next time the user presses down the push-down part 30, the liquid in the cylinder 10 will be squirted out.
  • An air supply path 44 is provided to provide air. Thereby, as the liquid is sucked up into the cylinder 10, outside air is taken into the container 2, so that the pressure inside the container 2 is maintained at atmospheric pressure.
  • the position of the nozzle 60 does not change when the piston 20 is pushed down to eject liquid from the nozzle 60. This allows the user to easily spray a mist of liquid at a targeted location, for example, when the user wants to spray a medicine or the like toward the back of the throat or toward the scalp.
  • the pump 1 since the pump 1 has a small number of parts and a compact structure, the amount of resin required for manufacturing is small, making it possible to provide customers with environmentally friendly products.
  • the pump 1 can be attached to a small shallow container 2 to discharge the solution in the container 2. Can be done. Therefore, the pump 1 is also suitable for small containers 2 containing small amounts of liquid. Furthermore, since the small container 2 requires a small amount of resin to manufacture, the use of the pump 1 of this embodiment can be environmentally friendly.
  • the liquid that has flowed into the space between the lower piston seal 21 and the upper piston seal 22 through the through hole 16 of the cylinder 10 can be moved laterally and guided to the nozzle 60 over the shortest distance. Therefore, the amount of liquid that remains in the nozzle 60 until the next injection can be minimized.
  • the cylinder 10 and piston 20 of this embodiment can be easily assembled by simply hooking and engaging the engaging portion 12 on the edge of the cylindrical portion 42 of the body 40 after assembling the cylinder 10 and piston 20 to the state shown in FIG. 3 (core state). can be assembled into. Therefore, by assembling the core part in advance and engaging and attaching it to the push-down part 30 and body 40 of the color and shape that the customer desires, the time required to complete the assembly can be shortened. Able to deliver in a timely manner.
  • the pump 200 of the second embodiment has the same configuration as the pump 1 of the first embodiment, but is a drop-type pump that discharges liquid as droplets instead of atomizing it. Therefore, the spring constant of the upper elastic member 26 and the structure of the nozzle 60 are different from those in the first embodiment.
  • the spring constant of the upper elastic member 26 of the pump 200 of the second embodiment is smaller than the spring constant of the upper elastic member 26 of the first embodiment.
  • the spring constant of the upper elastic member 26 of the second embodiment is similar to that of the first embodiment in that the spring constant of the lower elastic member 25 is larger.
  • the pump 200 of the second embodiment since the spring constant of the upper elastic member 26 is smaller than that of the first embodiment, the pump 200 of the second embodiment has a pressure threshold in the cylinder 10 that pushes up the lower piston seal 21 to open the flow path 27. It is smaller than the pump 1 of form 1.
  • the nozzle 60 has a larger space in the internal flow path 63 than in the first embodiment, and the size of the discharge port 62 is also designed to be larger than in the first embodiment.
  • the present embodiment is a pump that includes the lower elastic member 25 and the upper elastic member 26, so it is different from the mist type pump 1 that spouts a mist liquid as in the first embodiment and the pump as in the second embodiment.
  • a drop type pump 200 that discharges droplets can be realized with the same pump structure by simply changing the spring constant of the upper elastic member 26.
  • the other configuration of the pump 200 of the second embodiment is the same as that of the first embodiment, so the explanation will be omitted.
  • the pump 300 of the third embodiment is a drop type pump like the pump 200 of the second embodiment, but the nozzle 60 is bent longer than the pump 200 of the third embodiment, and the nozzle 60 is attached to the body 40. It is configured to be rotatable. In the pump 300 of the third embodiment, by rotating the nozzle 60, the central axis of the long nozzle 60 can be directed horizontally or upward.
  • the user can bring the discharge port 62 close to a desired position and discharge droplets. It is easy to apply droplets to the position. For example, it is suitable when you want to apply droplets of a medicinal solution to a specific location at the back of your throat.
  • the other configuration of the pump 300 of Embodiment 3 is the same as that of Embodiment 1, so description thereof will be omitted.
  • the pump 400 of the fourth embodiment is a drop-type pump like the second and third embodiments, but the volume of liquid ejected at one time is larger than that of the pump 200 of the second embodiment.
  • the diameter and length of the cylinder 10 are larger than those of the pump 200 of the second embodiment.
  • Other structures are similar to the pump 200 of the second embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne une pompe qui est compacte et dans laquelle un orifice d'évacuation ne se déplace pas.　La partie supérieure d'un cylindre (10) est supportée, par un corps (40), au niveau d'une position supérieure à l'ouverture d'un récipient, de sorte qu'un joint de piston inférieur (21) et qu'un joint de piston supérieur (22) sont positionnés au-dessus de l'ouverture du récipient. Au moins une partie d'une buse (60) est positionnée à l'intérieur d'une plage, sur la circonférence externe du corps (40), correspondant à la zone entre le joint de piston inférieur (21) et le joint de piston supérieur (22). Un trou traversant (16) est disposé au niveau du cylindre (10). Le trou traversant (16) est disposé dans une plage comprise entre les positions auxquelles le joint de piston inférieur (21) et le joint de piston supérieur (22) se trouvent respectivement en contact avec la paroi interne de cylindre d'une manière étanche à l'air.
PCT/JP2022/043563 2022-05-17 2022-11-25 Pompe et récipient d'aspersion WO2023223580A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-081121 2022-05-17
JP2022081121 2022-05-17

Publications (1)

Publication Number Publication Date
WO2023223580A1 true WO2023223580A1 (fr) 2023-11-23

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ID=88835114

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Application Number Title Priority Date Filing Date
PCT/JP2022/043563 WO2023223580A1 (fr) 2022-05-17 2022-11-25 Pompe et récipient d'aspersion

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WO (1) WO2023223580A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0814155A (ja) * 1994-06-20 1996-01-16 L'oreal Sa 液体のスプレー用の手動式予圧縮ポンプ
JPH10296141A (ja) * 1997-04-30 1998-11-10 Lion Corp ポンプディスペンサ
US5926953A (en) * 1994-04-08 1999-07-27 Sofab Method of making a pump dispenser using a container with a flexible bag
WO2007086156A1 (fr) * 2006-01-26 2007-08-02 Mitani Valve Co., Ltd. Mecanisme de vidange de contenu pour recipient de type pompe et produit de type pompe muni d'un mecanisme de vidange de contenu
WO2015108314A1 (fr) * 2014-01-15 2015-07-23 (주)연우 Récipient cosmétique présentant une buse rétractable
JP2018070237A (ja) * 2016-10-31 2018-05-10 株式会社吉野工業所 吐出容器用補助具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5926953A (en) * 1994-04-08 1999-07-27 Sofab Method of making a pump dispenser using a container with a flexible bag
JPH0814155A (ja) * 1994-06-20 1996-01-16 L'oreal Sa 液体のスプレー用の手動式予圧縮ポンプ
JPH10296141A (ja) * 1997-04-30 1998-11-10 Lion Corp ポンプディスペンサ
WO2007086156A1 (fr) * 2006-01-26 2007-08-02 Mitani Valve Co., Ltd. Mecanisme de vidange de contenu pour recipient de type pompe et produit de type pompe muni d'un mecanisme de vidange de contenu
WO2015108314A1 (fr) * 2014-01-15 2015-07-23 (주)연우 Récipient cosmétique présentant une buse rétractable
JP2018070237A (ja) * 2016-10-31 2018-05-10 株式会社吉野工業所 吐出容器用補助具

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