EP1243216A1 - Unite de soupape et contenant - Google Patents

Unite de soupape et contenant Download PDF

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Publication number
EP1243216A1
EP1243216A1 EP00940928A EP00940928A EP1243216A1 EP 1243216 A1 EP1243216 A1 EP 1243216A1 EP 00940928 A EP00940928 A EP 00940928A EP 00940928 A EP00940928 A EP 00940928A EP 1243216 A1 EP1243216 A1 EP 1243216A1
Authority
EP
European Patent Office
Prior art keywords
valve
piston section
liquid
unit
bellows
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.)
Withdrawn
Application number
EP00940928A
Other languages
German (de)
English (en)
Other versions
EP1243216A4 (fr
Inventor
Kiyoshi Advanex Inc. CHIKASHIGE
Akira Advanex Inc. MIZUOCHI
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.)
Advanex Inc
Original Assignee
Advanex Inc
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 Advanex Inc filed Critical Advanex Inc
Publication of EP1243216A1 publication Critical patent/EP1243216A1/fr
Publication of EP1243216A4 publication Critical patent/EP1243216A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/084—Machines, pumps, or pumping installations having flexible working members having tubular flexible members the tubular member being deformed by stretching or distortion
    • 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • B05B11/1073—Springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/30—Dip tubes
    • 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 valve unit and container used, for example, in a pump-type container for shampoo and so forth used in the home.
  • This container is composed of a container body and a valve unit removably inserted into the container body.
  • the valve unit is composed such that when a piston is pressed, the piston returns and draws up liquid from the container body, and when the piston is further pressed, liquid is discharged from the discharge end of the piston.
  • valve unit 1 is composed of a pipe-shaped valve body 2 that is removably inserted into a container body not shown, and a piston section 3 in the shape of an L-shaped pipe.
  • the above piston section 3 is inserted into the above valve body 2 while being able to slide, and liquid container unit 6 is formed within the above valve body 2 between intake port 4 of valve body 2 and piston 5 on the end of piston section 3, and communicates with the atmosphere via piston section 3.
  • Valve 7 is provided in the above intake port 4 side of this liquid container unit 6 that restricts back flow of liquid from the liquid container unit 6 to the container body side
  • check valve G is provided between the discharge end of the above piston section 3 and the discharge end of liquid container unit 6 that restricts outflow of liquid from piston section 3 to liquid container unit 6, and coil spring 8 is interposed between the above piston section 3 and valve 7. Force is applied by this coil spring 8 in the direction in which the above piston section 3 increases the volume of liquid container unit 6 relative to valve body 2.
  • valve unit In addition, amidst current preferences for the recycling of parts from the viewpoint of protecting the natural environment, the valve unit according to the background art impairs recycling and reuse since it is necessary for coil spring 8, which is made of metal, to be disassembled and disposed of separately.
  • the object of the present invention is to provide a valve unit and container for which the assembly operation is simple, can be easily recycled, and can be manufactured at low cost.
  • the valve unit of the present invention is characterized by comprising a pipe-shaped piston section slidably inserted into a pipe-shaped valve body inserted into and detachably fitted to a container body, a liquid container unit formed between an intake port of the valve body and an intake end of the piston section and which communicates with the atmosphere via the piston section, a valve which restricts outflow of liquid from the liquid container unit to the container body on the intake port side of the liquid container unit, a check valve which restricts back flow of liquid from the piston section to the liquid container unit that is provided between a discharge end of the piston section and a discharge side of the liquid container unit, the piston section being urged, with respect to the valve body, in a direction which increases the volume of the liquid container unit, and a concertina-shaped bellows, which is able to regain its form in the direction of lengthening and which connects the inside of the piston section with the intake port, connected between the intake end of the piston section and the valve.
  • valve In addition, the above bellows, valve, check valve and intake port are unitarily formed in the above valve unit.
  • a pipe that extends from the intake port of the valve body to a bottom wall of the container body is unitarily formed at a lower end of the bellows, the valve is provided in the bellows, the check valve is provided in the piston section, and in addition to the valve and check valve having plastic balls that block their respective valve seats, projections which prevent the balls of the valve and check valve from rising up may be unitarily formed in the bellows and piston section, respectively.
  • the above balls are not necessarily required to be spherical, and also refer to balls that are bowl-shaped or hemispherical.
  • the check valve and the projection that prevents the ball from rising may be formed unitarily in the bellows.
  • the projection can be formed simultaneous to forming of the bellows.
  • the bellows, piston section and pipe are formed unitarily into a bellows unit, the valve and check valve are provided in this bellows unit, and the projections which prevent the respective balls from rising up are unitarily formed corresponding to the valve and the check valve.
  • the bellows having the above valve and check valve, the piston section and the pipe can be formed simply by forming the bellows unit.
  • a back flow prevention body may be detachably installed on the intake end of the pipe or above the check valve that prevents back flow of liquid within the pipe when the pipe is upside down.
  • a narrow diameter section may be formed part way along the above pipe that prevents back flow of liquid within the pipe when the pipe is upside down.
  • a valve unit is characterized by comprising a pipe-shaped piston section slidably inserted into a pipe-shaped valve body inserted into and detachably fitted to a container body, a liquid container unit formed between an intake port of the valve body and an intake end of the piston section and which communicates with the atmosphere via the piston section, a valve which restricts outflow of liquid from the liquid container unit to the container body on the intake port side of the liquid container unit, a check valve which restricts back flow of liquid from the piston section to the liquid container unit that is provided between a discharge end of the piston section and a discharge side of the liquid container unit, the piston section being urged, with respect to the valve body, in a direction which increases the volume of the liquid container unit, a magnet which is attached to a piston that is attached to the intake end of the piston section and that slidably contacts the inside of the valve body, and a magnet attached to the liquid container unit side of the valve, each magnet being arranged so that like poles are mutually opposed.
  • the piston section when the piston section is pressed again, since liquid in the liquid container unit is prevented from moving into the container body by the valve, the liquid, which has no where to escape, opens the check valve and is expelled from the liquid container unit that has a smaller volume due to the operation of the piston, and liquid in the pressed piston section is expelled to the outside from the piston section without flowing back into the liquid container unit by the check valve.
  • one of the magnets can be attached to the piston section, and the other magnet can be attached to the liquid container unit side of the valve, and each of the magnets can be unitarily assembled.
  • the above magnets in the above valve unit may be plastic magnets.
  • valve body, piston section, check valve and valve can also be formed from plastic.
  • the check valve may be provided on the discharge end side of the piston section, and may be a flexible section that presses against and blocks the discharge end side of the piston when negative pressure is generated inside the piston section.
  • the flexible section functions as a check valve by pressing against and blocking the inside of the piston section.
  • valve unit a separable constitution may be employed for the above bellows, piston section and pipe.
  • the container according to the present application is a container provided with a valve unit and container body according to either of the above-mentioned modes.
  • FIGS. 1 and 2 show the valve unit and container of a first embodiment of the present invention.
  • valve unit 1 is detachably fitted to upper opening 9.
  • Valve unit 1 is composed of piston section 3 and valve body 2, both molded from plastic.
  • Valve body 2 is in the shape of a pipe that is inserted into and detachably fitted to container body Y, and the above pipe-shaped piston section 3 is slidably inserted therein.
  • the above valve body 2 has cylindrical section 11 provided on the lower side of upper flange 10, an intake port in the form of opening 13 is formed in bottom wall 12 of the lower section of valve body 2, and ball 14 is arranged in opening 13 that is able to block opening 13. Shampoo is only allowed to flow from the lower side to the upper side of opening 13 by this ball 14, and back flow from the upper side to the lower side of opening 13 is prevented.
  • the above opening 13, ball 14 and bottom wall 12 compose valve B.
  • insertion section 15 for pipe P that extends into container body Y is formed on the lower end of cylindrical section 11.
  • the above piston section 3 is a pipe-shaped member that is formed roughly into the shape of the letter "L", and as previously described, the lower half is slidably inserted into the above valve body 2 from upper flange 10 of valve body 2, while the end of the upper end that extends horizontally starting at the bent section is bent slightly downward on an angle.
  • pushing section 16 is formed on the bent section of piston section 3.
  • ledge 17 is formed around the lower half of the above piston section 3, and this ledge 17 engages with upper flange 10 of the above valve body 2 so that piston section 3 is not inserted beyond a fixed length.
  • check valve G is inserted and fixed in the intake end on the lower end of piston section 3. Since ball 14 is housed in a cylindrical member, this check valve G allows outflow of liquid while restricting the upward movement of ball 14 by, for example, tube T having a cross-shaped slit. Ball 14 restricts back flow of liquid from piston section 3 into liquid container unit 6 by blocking opening K of joint 20 on the upper side.
  • ball 14 of the above valve B and ball 14 of check valve G are spherical
  • the balls are not necessarily required to be spherical, but rather may be bowl-shaped or hemispherical (and this applies similarly to other embodiments as well).
  • cylindrical bracket 18 around opening 13 on bottom wall 12 of valve body 2 fits into above valve body 2, and concertina-shaped bellows 19 made of plastic, which connects the inside of piston section 3 and opening 13, and which is able to regain its form in direction of lengthening, is connected between this bracket 18 and the lower end of the above piston section 3.
  • this bellows 19 is composed in the form of liquid container unit 6.
  • the above bellows 19 is urged in the direction of lengthening, namely the direction in which the volume of its inside increases.
  • joints 20 respectively attached to piston section 3 and bracket 18 are formed on the upper and lower ends of bellows 19, at least one of these may be unitarily formed or unitarily assembled with the connected site.
  • bellows 19 can be unitarily formed and assembled into a single unit with piston section 3 or bracket 18, assembly work is easy and bellows 19 can be manufactured at low cost.
  • piston section 3 and valve body 2 can be processed together since they are all made of plastic, recycling is easy.
  • This embodiment eliminates the above-mentioned bracket 18 in the above first embodiment, positions ball 14 of valve B in the lower section of bellows 19, and inserts and fixes the upper section of bellows 19 in the lower end of piston section 3 by means of a tube T.
  • check valve G which is able to open and close opening K with ball 14, is unitarily formed in the upper section of bellows 19.
  • the above pipe P is unitarily formed in the lower end of bellows 19.
  • bellows 19, valve B, check valve G and an intake port in the form of pipe P in the above embodiment are unitarily formed.
  • this embodiment offers the advantages of being able to significantly reduce the number of parts while also facilitating assembly.
  • check valve G of the above second embodiment is formed with ball 14 and opening K part way along piston section 3.
  • communication hole R is formed offset from the center in the bent section of the path within piston section 3, and as a result, prevents the flow path of liquid that runs out from being blocked by ball 14.
  • check valve G can be simplified, and tube T can be eliminated, thereby making it possible to significant reduce the number of parts.
  • the mode shown in FIG. 5 is provided with truncated cone-shaped valve body 14a instead of ball 14 of check valve G of the second embodiment. This mode is able to demonstrate a similar function even if this check valve G is used.
  • valve body 14a of the mode shown in FIG. 5 within piston section 3.
  • valve body 14a of the mode shown in FIG. 5 within piston section 3.
  • the mode shown in FIG. 7 is provided with a lip type of check valve G inside piston section 3, and more specifically on the discharge end side, instead of check valve G of the second embodiment.
  • This check valve G is attached so that a pair of flexible conical thin film lips L gradually approach the discharge end side of piston section 3, and when liquid attempts to flow back into liquid container unit 6, these thin film lips L block the opening and prevent air from flowing in, thereby preventing back flow of liquid. According to this check valve G, the number of parts can be further reduced.
  • the mode shown in FIG. 8 has the discharge end of piston section 3, which is normally open, formed with an flexible section D made of rubber and so forth that blocks the flow path by pressing together (state shown in FIG. 8) when negative pressure is generated inside piston section 3.
  • this flexible section D itself functions as a check valve, despite offering the simplest structure, it is able to prevent back flow of liquid by preventing air from flowing into piston section 3 in the same manner as the variation of FIG. 7.
  • the discharge end of piston section 3 becomes soft by means of flexible section D, it offers the secondary advantage of being safe even if it is bumped into a user.
  • FIGS. 9 through 17 indicate a third embodiment of the present invention.
  • valve unit 1 is detachably fitted into the upper opening 9 of container body Y by cap C which is screwed onto the opening 9.
  • Valve unit 1 is composed of piston section 3 and valve body 2 which are both formed with plastic.
  • Valve body 2 is in the shape of a pipe that is inserted into and detachably fitted to container body Y, and a pipe-shaped piston section 3 is slidably inserted inside.
  • the above valve body 2 is provided with cylindrical section 11 on the lower side of upper flange 10, and opening 13 is formed in bottom wall 12 of the lower section.
  • the above piston section 3 is a pipe-shaped member formed roughly into the shape of the letter "L" overall, and as shown in FIG. 11, is divided into two members consisting of piston body 3A and bent section 3B.
  • piston body 3A is slidably inserted into the above valve body 2 from upper flange 10 of valve body 2, and the end of bent section 3B is bent downward on a slight angle.
  • pushing section 16 is attached to bent section 3B of piston section 3.
  • check valve G is provided in piston body 3A of piston section 3.
  • This check valve G has plastic ball 14 housed in piston body 3A, and projection 25, which prevents ball 14 from rising upward, is unitarily formed with piston body 3A above this ball 14.
  • the above plastic ball 14 is lighter than a steel ball.
  • This projection 25 allows liquid to flow through while restricting the upward movement of ball 14. The back flow of liquid from piston section 3 into liquid container unit 6 is restricted by this ball 14 by blocking valve seat 26 inside piston body 3A.
  • the above ball 14 is assembled by pushing into piston body 3A.
  • Check valve G is composed of the above ball 14 and valve seat 26.
  • a concertina-shaped bellows 19 which connects the inside of piston section 3 with opening 13, and which is made of plastic and able to regain its form in the direction of lengthening, is interposed, between opening 13 of bottom wall 12 of the above valve body 2 and the intake end of piston body 3A.
  • the inside of this bellows 19 is composed as liquid container unit 6.
  • the above bellows 19 is urged in the above direction of lengthening, namely in the direction in which the volume inside increases.
  • pipe P which extends to the bottom wall of container body Y from the above opening 13 is unitarily formed with bellows 19 on the lower end of bellows 19, and constriction 19A that engages with the periphery of the above opening 13 is formed between this bellows 19 and the root of pipe P, while valve chamber 12A of valve B is provided at the lower end of this constriction 19A.
  • Bellows 19 engages with the above opening 13 and prevents the escape due to the above constriction 19A.
  • valve B has a plastic ball 14 inside valve chamber 12A that is continuous with the concertina section of bellows 19.
  • This ball 14 is composed so as to be able to block valve seat 12B of valve chamber 12A, and when this ball opens, shampoo is only allowed to flow upward from the upper end of pipe P, and when ball 14 closes valve seat 12B, back flow of shampoo downward from the upper end of pipe P is prevented.
  • Valve B is composed of the above valve chamber 12A, ball 14 and valve seat 12B.
  • projections 25, which prevent ball 14 of valve B from rising upward, are unitarily formed on walls inside bellows 19 by forming the above constriction 19A on the peripheral edge between bellows 19 and valve chamber 12A. Furthermore, these projections 25 have the same constitution as the above projection 25 of check valve G. Here, these projections 25 achieve the object by giving the hole an irregular shape.
  • piston body 3A can be molded with plastic in entirety since ball 14 of check valve G is molded with plastic.
  • bellows 19 as well as ball 14 of valve B are also molded with plastic, the entire structure can be molded with plastic together with pipe P. Accordingly, the entire structure can be processed without having to separate, thereby facilitating recycling.
  • valve seat 26 and projection 25 in check valve G are unitarily formed with piston body 3A, and pipe P, projections 25 and valve chamber 12A in bellows 19 are formed unitarily, the number of man-hours required for assembly work can be reduced, and the valve unit and container can be manufactured at low cost.
  • FIG. 18 shows a fourth embodiment of the present invention.
  • This embodiment unitarily forms piston body 3A and bent section 3B in the above third embodiment into an integrated piston section 3, and provides check valve G in the above third embodiment on the bellows 19 side.
  • the section from pipe P to bellows 19 and to piston section 3 is composed of two parts, which is fewer parts than the third embodiment in which this section is composed of three parts.
  • valve B has a similar constitution as in the previous embodiment, while plastic ball 14 and projection 25 of check valve G are again unitarily formed with bellows 19, with ball 14 blocking valve seat 26.
  • this bellows 19 is assembled by pushing in the two balls 14 of check valve G and valve B, and ball 14 of check valve G has a larger diameter than ball 14 of valve B (and this applies similarly in FIGS. 19A, 19B and 22 of the fifth embodiment). Furthermore, since the constitutions of other components are the same as in the above third embodiment, the same reference symbols are used for the same components, and their explanations are omitted.
  • balls 14 of check valve G and valve B are molded with plastic, and because of this, they can be prevented from rising upward by projections 25, they can be recycled easily while also offering the effect of allowing balls 14 of check valve G and valve B to operate smoothly. Since the section from pipe P to bellows 19 and piston section 3 is composed of two parts, the number of parts can be further reduced, resulting in a greater decrease in man-hours required for assembly, while also offering the effect of reduced costs.
  • FIGS. 19A, 19B and 20 through 22 show a fifth embodiment of the present invention.
  • this embodiment unitarily forms piston section 3 and bellows 19 in the fourth embodiment.
  • the section from pipe P to bellows 19 and piston section 3 is composed with a single part in the form of bellows unit 27, resulting in fewer parts than the fourth embodiment in which this section is composed of two parts.
  • bellows unit 27 is unitarily provided with pipe P, valve chamber 12A, bellows 19 and piston section 3, and a concertina section 28 shown in FIG. 22 is formed at the location serving as the bent portion in piston section 3.
  • This concertina section 28 is provided after forming so as to facilitate bending, and pushing member 16A is inserted and fixed at this location as shown in FIGS. 20 and 21.
  • a thin-walled section having thinner walls than other sites may be formed instead of the above concertina section 28.
  • the above pushing member 16A is a member in the shape of a cap, circular engaging groove 16C is formed in peripheral wall 16B, and as shown in FIG. 21, bracket 16D is provided so as to cover the bottom opening while partially leaving open the engaging groove 16C side of the bottom opening roughly in the shape of the letter "T", with engaging groove 16F formed in bracket 16D as well.
  • the end of piston section 3 is inserted through the above engaging groove 16F of pushing member 16 formed in this manner, bent at concertina section 28 and pulled out from engaging groove 16C, followed by attaching pushing member 16A to piston section 3 of bellows unit 27.
  • FIG. 19B shows another mode of the fifth embodiment in which the above unitarily formed pipe P (and referring to that which includes valve chamber 12A), bellows 19 and piston section 3 can each be composed separately.
  • each part, namely pipe P, bellows 19 and piston section 3 can be used interchangeably as individual parts, they can be used as shared parts, thereby making it possible to reduce manufacturing costs.
  • the same reference symbols are assigned to those components that are the same as in FIG. 19A, and their explanation is omitted.
  • FIGS. 23 and 24 an explanation of sixth embodiment is provided as shown in FIGS. 23 and 24. Furthermore, the explanation is provided using the same reference symbols for those parts that are the same as in the above second embodiment.
  • valve unit 1 is composed with piston section 3 and valve body 2 both molded with plastic.
  • Valve body 2 is in the shape of a pipe that is inserted into and detachably fitted to container body Y, and the above piston section 3 in the shape of a pipe is slidably inserted inside.
  • valve body 2 is equipped with cylindrical section 11 beneath upper flange 10, an intake port in the form of opening 13 is formed in bottom wall 12 of the lower end, and ball 14 is arranged in opening 13 that is able to block opening 13.
  • This ball 14 only allows shampoo to flow from the lower side of opening 13 to the upper side of opening 13, and prevents back flow of shampoo from the upper side to the lower side.
  • Valve B is composed with the above opening 13, ball 14 and bottom wall 12. Furthermore, air venting hole 21 is formed in the upper outer peripheral surface of cylindrical section 11, and an insertion section 15 for pipe P, which extends into container body Y, is formed in the lower end of cylindrical section 11.
  • the above piston section 3 is a pipe-shaped member that is formed roughly into the shape of the letter "L", and as previously described, the lower half is slidably inserted into the above valve body 2 from upper flange 10 of valve body 2, while the end of the upper end that extends horizontally starting at the bent section is bent slightly downward on an angle.
  • pushing section 16 is formed on the bent section of piston section 3.
  • ledge 17 is formed around the lower half of the above piston section 3, and this ledge 17 engages with upper flange 10 of the above valve body 2 so that piston section 3 is not inserted beyond a fixed length.
  • piston 22 that slidably contacts the inner periphery of valve body 2 is formed on the lower end of piston section 3.
  • Check valve G having a similar constitution as in the first embodiment is attached to the lower end of piston section 3.
  • cylindrical bracket 18 fits into the above valve body 2 around opening 13 on bottom wall 12 of valve body 2, and plastic magnets 23 and 24, in a state in which like poles are mutually opposed, are attached between this bracket 18 and the lower end of piston 22 of the above piston section 3. More specifically, plastic magnet 23 fits into valve body 2 in a state in which it is supported by bracket 18, while plastic magnet 24 is embedded in piston 22. Communication holes 23A and 24A are respectively formed in the centers of plastic magnets 23 and 24.
  • magnets 23 and 24 are plastic magnets, they can be molded with plastic together with valve body 2, piston section 3, check valve G and valve B, thereby facilitating recycling.
  • this embodiment and the eighth embodiment have check valve G of the previously mentioned third embodiment shown in FIG. 9 formed unitarily in the manner of valve B. Accordingly, the same reference symbols are used to indicate those constituent parts that are the same as FIG. 9, and their explanation is omitted.
  • these seventh and eighth embodiments relate to a variation of the above pipe P, they can also be applied to the other first, second and fourth through sixth embodiments.
  • a plastic back flow prevention body 30 is detachably installed on the intake end of pipe P in each of the previous embodiments that prevents back flow of liquid in pipe P in the case pipe P is upside down.
  • This back flow prevention body 30 is a cylindrical cap with a bottom that is placed over the intake end of pipe P to block it, and has a cross-shaped slit 32 formed in bottom wall 31. Although this slit 32 opens when acted on by negative pressure to draw in the above liquid, in the case pipe P, namely the entire container body Y, is turned upside down, the inflow of liquid into pipe P can be prevented.
  • the shape of the above slit 32 is not limited to the shape of a cross, but rather may be in the form of a dash or asterisk.
  • FIGS. 28, 29, 30A and 30B an explanation is provided of an eighth embodiment according to FIGS. 28, 29, 30A and 30B.
  • a narrow diameter section 34 is formed part way along pipe P in each of the previously mentioned embodiments that prevents back flow of liquid in pipe P in the case pipe P is upside down.
  • This narrow diameter section 34 is equipped with thin-walled diaphragm 35.
  • this narrow diameter section 34 is able to expand by pressure and draw up liquid without hindrance in the case of drawing up the above liquid, in the case pipe P, namely the entire container body, is turned upside down, has a cross-sectional area that prevents liquid from flowing past diaphragm 35.
  • diaphragm 35 of narrow diameter section 34 in the case container body Y is upside down, the overflow of liquid outside the container body due to back flow of liquid can be effectively prevented.
  • FIGS. 30A and 30B show other modes of the eighth embodiment.
  • Diaphragm 35 in FIG. 30A is formed in the shape of a cross-sectional slit as shown in FIG. 30B.
  • slit-shaped diaphragm 35 expands by pressure and takes in liquid in the case liquid is drawn in, in the case container body Y is upside down, since liquid inside pipe P can be prevented from flowing past this section by slit-shaped diaphragm 35 of narrow diameter section 34, overflow of liquid outside the container body due to back flow of liquid can be effectively prevented.
  • the present invention is not limited to the previously described embodiments, but rather for example, the variations of the check valve in the second embodiment (shown in FIGS. 4 through 8) can also be applied to the first and sixth embodiments.
  • a metal magnet or rubber magnet can be used instead of the plastic magnets in the sixth embodiment.
  • the number of parts and the number of man-hours required for assembly can be reduced.
  • a bellows can be unitarily formed and unitarily assembled with a piston or valve, thereby resulting in the effects of being able to manufacture the valve unit at low cost, while also facilitating assembly work and recycling.
  • a bellows, valve, check valve and intake port are formed unitarily, thereby resulting in the effect of being able to significantly reduce the number of parts.
  • projections can be formed simultaneous to formation of a bellows, thereby resulting in the effect of being able to reduce the number of parts and the number of man-hours required for assembly.
  • a bellows having the above valve and check valve, piston section and pipe can be formed simply by forming a bellows unit, thereby resulting in the effect of being able to significantly reduce the number of parts and man-hours required for assembly.
  • the down flow of liquid over the intake end of a pipe or a check valve can be prevented by a back flow prevention body even when the pipe is upside down, thereby resulting in the effect of being able to effectively prevent overflow of liquid outside the container body due to back flow of liquid.
  • the down flow of liquid within a pipe can be prevented by a narrow diameter section even when the pipe is upside down, thereby resulting in the effect of being able to effectively prevent overflow of liquid outside the container body due to back flow of liquid.
  • two magnets can be assembled unitarily, with one magnet in a piston section and the other magnet on the side of a liquid container unit of a valve, thereby resulting in the effect of facilitating assembly work, facilitating recycling and being able to lower manufacturing cost.
  • valve body, piston section, check valve and valve can all be molded from plastic, thereby resulting in the effect of facilitating recycling.
  • a flexible section presses together to function as a check valve that blocks the inside of a piston section when liquid attempts to flow back from the piston section to a liquid container unit, thereby resulting in the effects of being able to simplify the structure and further reduce the number of parts.
  • the container is provided with a valve body and container body according to any of the above modes, thereby resulting in the effects of being able to reduce the number of parts of the entire container, reduce the number of man-hours required for assembly, and manufacture the container at low cost.

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Check Valves (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Fluid-Damping Devices (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
EP00940928A 1999-12-07 2000-07-03 Unite de soupape et contenant Withdrawn EP1243216A4 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP34819199 1999-12-07
JP34819199 1999-12-07
JP2000026637 2000-02-03
JP2000026637 2000-02-03
JP2000101427 2000-04-03
JP2000101427 2000-04-03
PCT/JP2000/004407 WO2001041611A1 (fr) 1999-12-07 2000-07-03 Unite de soupape et contenant

Publications (2)

Publication Number Publication Date
EP1243216A1 true EP1243216A1 (fr) 2002-09-25
EP1243216A4 EP1243216A4 (fr) 2007-02-07

Family

ID=27341277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00940928A Withdrawn EP1243216A4 (fr) 1999-12-07 2000-07-03 Unite de soupape et contenant

Country Status (3)

Country Link
EP (1) EP1243216A4 (fr)
AU (1) AU5572700A (fr)
WO (1) WO2001041611A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1525921A1 (fr) * 2003-10-21 2005-04-27 Brooklands Enterprise Co., Ltd. Dispositif distributeur de fluide
WO2005078283A1 (fr) * 2004-01-14 2005-08-25 Pierino Pistis Rouleau de peinture auto-alimenté
AU2003255207B2 (en) * 2003-10-21 2005-09-01 Brooklands Enterprise Co., Ltd. Fluid dispenser device
EP2036617A1 (fr) 2007-09-13 2009-03-18 L'Oreal Pompe distributrice pour récipient de stockage et de distribution de produit et récipient pourvu d'une telle pompe
EP3000533A1 (fr) * 2014-09-25 2016-03-30 Albea Thomaston Inc. Pompe de distribution d'un produit contenu dans une bouteille
WO2018177519A1 (fr) * 2017-03-29 2018-10-04 Essity Hygiene And Health Aktiebolag Ressort plastomère à soupape captive
CN111997876A (zh) * 2020-08-28 2020-11-27 付兰 一种方便配合的分体式储气罐

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1364719A1 (fr) * 2002-05-23 2003-11-26 Living Fountain Plastic Industrial Co., Ltd. Distributeur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380077A1 (fr) * 1977-02-15 1978-09-08 Normos Norbert Dispositif de dosage et pulverisation d'un liquide comportant un element compressible
EP0171462A2 (fr) * 1984-08-14 1986-02-19 Ing. Erich Pfeiffer GmbH & Co. KG Dispensateur pour matériau coulant
US5114052A (en) * 1988-08-25 1992-05-19 Goody Products, Inc. Manually actuated trigger sprayer
EP0720951A1 (fr) * 1995-01-05 1996-07-10 Calmar Inc. Distributeur à pompe à soufflets

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620897A1 (de) * 1986-06-21 1987-12-23 Mega Prod Verpack Marketing Spender
JPH0970371A (ja) * 1995-09-07 1997-03-18 Kao Corp ポンプ機構
JP3569384B2 (ja) * 1996-04-05 2004-09-22 株式会社吉野工業所 押下げノズルヘッド付きベローズポンプ
JP3924821B2 (ja) * 1996-09-30 2007-06-06 株式会社吉野工業所 液体噴出ポンプ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380077A1 (fr) * 1977-02-15 1978-09-08 Normos Norbert Dispositif de dosage et pulverisation d'un liquide comportant un element compressible
EP0171462A2 (fr) * 1984-08-14 1986-02-19 Ing. Erich Pfeiffer GmbH & Co. KG Dispensateur pour matériau coulant
US5114052A (en) * 1988-08-25 1992-05-19 Goody Products, Inc. Manually actuated trigger sprayer
EP0720951A1 (fr) * 1995-01-05 1996-07-10 Calmar Inc. Distributeur à pompe à soufflets

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0141611A1 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1525921A1 (fr) * 2003-10-21 2005-04-27 Brooklands Enterprise Co., Ltd. Dispositif distributeur de fluide
AU2003255207B2 (en) * 2003-10-21 2005-09-01 Brooklands Enterprise Co., Ltd. Fluid dispenser device
WO2005078283A1 (fr) * 2004-01-14 2005-08-25 Pierino Pistis Rouleau de peinture auto-alimenté
EP2036617A1 (fr) 2007-09-13 2009-03-18 L'Oreal Pompe distributrice pour récipient de stockage et de distribution de produit et récipient pourvu d'une telle pompe
FR2921050A1 (fr) * 2007-09-13 2009-03-20 Oreal Pompe distributrice pour recipient de stockage et de distribution de produit et recipient pourvu d'une telle pompe
EP3000533A1 (fr) * 2014-09-25 2016-03-30 Albea Thomaston Inc. Pompe de distribution d'un produit contenu dans une bouteille
WO2018177519A1 (fr) * 2017-03-29 2018-10-04 Essity Hygiene And Health Aktiebolag Ressort plastomère à soupape captive
RU2727611C1 (ru) * 2017-03-29 2020-07-22 Эссити Хайджин Энд Хелт Актиеболаг Пластомерная пружина с удерживаемым клапаном
US11051660B2 (en) 2017-03-29 2021-07-06 Essity Hygiene And Health Aktiebolag Plastomer spring with captive valve
AU2017406105B2 (en) * 2017-03-29 2021-07-22 Essity Hygiene And Health Aktiebolag Plastomer spring with captive valve
CN111997876A (zh) * 2020-08-28 2020-11-27 付兰 一种方便配合的分体式储气罐

Also Published As

Publication number Publication date
EP1243216A4 (fr) 2007-02-07
WO2001041611A1 (fr) 2001-06-14
AU5572700A (en) 2001-06-18

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