WO2019238237A1 - Pompe à piston manuel pour un contenant de fluide - Google Patents

Pompe à piston manuel pour un contenant de fluide Download PDF

Info

Publication number
WO2019238237A1
WO2019238237A1 PCT/EP2018/065865 EP2018065865W WO2019238237A1 WO 2019238237 A1 WO2019238237 A1 WO 2019238237A1 EP 2018065865 W EP2018065865 W EP 2018065865W WO 2019238237 A1 WO2019238237 A1 WO 2019238237A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
pump
piston
collar
hollow stem
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.)
Ceased
Application number
PCT/EP2018/065865
Other languages
English (en)
Inventor
Lorenzo MATORDES
Giancarlo FONTANARI
Adalberto Geier
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.)
Coster Technologie Speciali SpA
Original Assignee
Coster Technologie Speciali SpA
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 Coster Technologie Speciali SpA filed Critical Coster Technologie Speciali SpA
Priority to PCT/EP2018/065865 priority Critical patent/WO2019238237A1/fr
Publication of WO2019238237A1 publication Critical patent/WO2019238237A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • 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
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the present invention relates to a manual piston pump for attachment to a fluid container for dispensing fluids such as liquid soap, gels, lotions and the like.
  • Conventional manual piston pumps of this type comprise a dispensing head mounted on a movable stem of the pump that projects beyond the exterior of a main part of the pump.
  • the lower end of the stem extends inside the main part and is biased outwards by a spring.
  • a locking sleeve is provided that is connected to the main part of the pump and that by means of inter-engaging projections enables the dispensing head to be locked to the locking sleeve.
  • the advantage of such a lockable dispensing head is that it protects the pumping mechanism against movement before the pump is brought into use. This is because the stem is liable to skew when it is manually pushed into the main body of the pump against the bias of the spring during use. Skewing of the stem results in a piston within the pump not acting correctly to dispense a sufficient quantity of fluid. Users therefore tend to perform multiple depressions of the shaft which results in an excess of fluid being supplied, which is both wasteful and inefficient.
  • An object of the present invention is to provide a manual piston pump for attachment to a fluid container that overcomes or substantially mitigates the aforementioned skewing problem, in particular during use.
  • a manual piston pump for attachment to a fluid container for dispensing fluids comprising
  • a pump housing adapted for securement to a neck of the fluid container; a piston located within a chamber defined by the pump housing;
  • a movable, hollow stem connected to the piston and being manually movable into the pump housing against the bias of a compression spring
  • an actuator located over an outer end of the hollow stem and defining a nozzle through which fluid drawn from the container into the hollow stem by the piston is dispensed, the actuator comprising an inner sleeve that bears against the outer end of the hollow stem and an outer sleeve;
  • the collar defines an annular guiding channel into which the outer sleeve is pushed when the actuator is depressed to dispense fluid from the container.
  • the outer sleeve of the actuator is a snug fit within the guiding channel thereby preventing any significant skewing of the hollow stem as it moves into the pump housing during use.
  • Fig. 1 is a perspective view of an embodiment of a manual piston pump for attachment to a fluid container in accordance with the present invention
  • Fig. 2 is a longitudinal sectional view of the piston pump shown in Fig. 1 but to an enlarged scale and showing an actuator thereof in a locked condition;
  • Fig. 3 is a view similar to Fig. 2 but showing the actuator rotated through
  • Fig. 4 is a perspective view from below of the actuator when detached from the rest of the piston pump
  • Fig. 5 is a perspective view from above of the piston pump after detachment of the actuator therefrom;
  • Fig. 6 is a view similar to Fig. 5 but after removal of a hollow stem forming a piston rod therefrom.
  • a manual piston pump 1 for attachment to a fluid container for dispensing fluids is shown in the drawings. In most embodiments, the various components of the piston pump 1 will be moulded from plastic materials.
  • the pump 1 comprises a pump housing 2 that is adapted for securement to a neck of the fluid container (not shown) by means of a cap or closure 3 secured thereto.
  • the cap 3 is snap-fitted over an outwardly turned flange 4 at an upper end of the housing 2 and, in this example, is provided with an internal screw-thread 5 so that it can be screwed over a complementary screw-threaded provided externally around the neck of the fluid container with which the piston pump 1 is to be used.
  • a gasket 6 may be provided adjacent the flange 4 on the inside of the cap 3 to provide a seal between the cap 3 and the container to which it is secured.
  • a portion 7 of reduced diameter is push fitted over the end of a dip tube 8 that in the present embodiment is separate from the piston pump 1 but which could form an integral part thereof.
  • the dip tube 8 is inserted into a container and thereby into its contents so that they can be dispensed by the piston pump 1.
  • a one-way ball valve 9 that permits fluid to flow from the dip tube 8 into an adjacent chamber 10 defined by the housing 2 but which prevents fluid flow in the opposite direction.
  • Reciprocable within the chamber 10 is a piston 11 that is used to pump fluid from the chamber 10 to a dispensing nozzle 12 by an arrangement that will now be described.
  • the piston 11 is connected to a piston rod in the form of a hollow stem 13 that may extend out of the pump housing 2.
  • An actuator 14 is push-fitted over an outer end of the hollow stem 13 and the actuator 14 and stem 13 define complementary ribs and annular grooves 15 and 16, which snap-fit together to retain the actuator 14 in position.
  • the actuator 14 is hollow and defines an outlet channel terminating in the dispensing nozzle 12 through which fluid drawn from the container into the hollow stem 13 by the piston 11 is dispensed.
  • the stem 13 is movable into the pump housing 2 against the bias of a compression spring 17 that is located around the exterior of the stem 13. An upper end of the spring 17 bears against an outwardly extending projection 18 defined by the stem 13.
  • This projection 18, which is preferably an annular ring, also provides a stop against which part of the actuator 14 bears as is further described below.
  • the other end of the spring 17 bears against an inner ring 19 of a collar 20 of greater diameter.
  • the inner ring 19 surrounds the lower end of the stem 13, which reciprocates relative to it when the pump 1 is operated.
  • the collar 20, which is of greater diameter than the ring 19 and is located within the cap 3, extends upwardly of the inner ring 19 and surrounds the greater part of the spring 17, when extended, and the stem 13.
  • the collar 20 comprises inner and outer cylindrical parts 21 and 22 that surround the stem 13 and spring 17 and which between them define an annular guiding channel 23.
  • the outer part 22 comprises an outwardly turned flange 24 at its upper end that is secured between the flange 4 and the cap 3 and thereby retains the collar 20 in position within the cap 3.
  • the actuator 14 comprises inner and outer sleeves 25 and 26.
  • the inner sleeve 25 comprises the grooves 16 and is secured to the outer end of the stem 13 which comprises the ribs 15.
  • the inner sleeve 25 could comprise ribs 15 while the outer end of the stem 13 comprises grooves 16.
  • a lower rim 27 of the sleeve 25 bears against the projection 18, which, being annular, ensures that when the actuator 14 is operated pressure is evenly distributed around the hollow stem 13 making it less likely to skew.
  • the dispensing nozzle 12 is in fluid communication with the interior of the sleeve 25, which it will be appreciated is also in fluid communication with the interior of the stem 13.
  • the outer sleeve 26 is longer than the inner sleeve and defines a rim 28 that penetrates through a central aperture of the cap 3 adjacent the upper part of the guiding channel 23.
  • the actuator 14 When the actuator 14 is depressed to operate the pump 1, the outer sleeve 26 is pushed downwards into the guiding channel 23, in which it is a snug fit. This also prevents the actuator 14 and thereby the stem 13 from significant skewing to the side and retains them both coaxial along their longitudinal axes as the stem 13 is pushed into the pump housing 2. This ensures that the piston 11 operates correctly to draw up an appropriate quantity of fluid from the container as it retains a seal around its periphery with the housing 2. Skewing of the stem 13 tends to break this seal and may result in fluid leaking through the piston 11 or past the piston 11 into the cap 3.
  • the resulting negative pressure within the chamber 10 opens the ball valve 9 and fluid is sucked up the dip tube 8 from the container and into the chamber 10 ready for the next actuation of the pump 1.
  • air is drawn in and released from the housing 2 above the level of the piston 11 via a port 29.
  • the piston 11 and stem 13 can be locked in an inoperable position. This prevents fluid from being dispensed from an attached container inadvertently, for example during transportation. Locking of the stem 13 in position also protects it from being skewed out of position by knocks or shocks during packing and transportation.
  • the actuator 14 is rotatable between a first, unlocked position wherein it can be depressed against the force of the compression spring 17 to operate the piston 11 and a second, locked position wherein depression of the actuator 14 to operate the piston 11 is prevented.
  • the actuator 14 can be rotatable around the outer end of the hollow stem 13 or together with the hollow stem 13.
  • the inner sleeve 25 of the actuator 14 comprises at least one and preferably two longitudinal ribs 30 that in the first, unlocked position of the actuator 14 respectively align with and can slide along longitudinal slots 31 defined by the inner cylindrical part 21 of the collar 20 when the piston 11 is the operated.
  • the actuator 14 is in its second, locked position the longitudinal rib or ribs 30 are out of alignment with their respective slots 31 and their ends 32 bear against respective ledges 33 defined by the inner cylindrical part 21 of the collar 20 adjacent the slots 31. This prevents depression of the actuator 14 into the collar 20.
  • two longitudinal ribs 30 and two slots 31 are provided they are arranged on opposite sides of the inner cylindrical part 21.
  • the length of the ledges 33 annularly around the inner cylindrical part 21 is such that the actuator 14 is capable of rotational movement through at least 90°. preferably 90°, between its locked and unlocked positions.
  • a side wall 34 of the inner cylindrical part 21 adjacent the ledges 33 is recessed as at 35 adjacent the ribs 30 when the actuator 14 is in its locked position. This enables the ribs 30 to seat within the recesses 35 and retain the actuator 14 in a locked position until a torque is applied to force the ribs 30 out of the recesses 35 and bear against the wall 34 until the ribs 30 locate into the slots 31 when the actuator 14 is in its unlocked position.
  • the resilient nature of the ribs 30 and/or the wall 34 enables them to deform slightly to permit this manual rotation between locked and unlocked positions of the actuator 14, which is possible owing to the components of the piston pump 1 being primarily moulded from plastics materials.
  • the manual piston pump 1 of the invention prevents or at least substantially mitigates any skewing of the piston 11 and the hollow stem 13 during use as the outer sleeve part 26 of the actuator 14 is guided in its travel by the guiding channel 23, which prevents any significant skewing of the longitudinal axis of the stem 13.
  • the provision of a locked condition of the actuator also protects the hollow stem 13 from skewing when the piston pump 1 is not in use and prevents inadvertent operation of the actuator 14, in particular after the piston pump 1 has been secured to a filled container but before the latter has been brought into use, for example during transportation.

Landscapes

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

Abstract

L'invention concerne une pompe à piston manuel (1) destinée à être fixée à un contenant de fluide pour la distribution de fluides tels que du savon liquide, des gels, des lotions et similaires. La pompe (1) comprend un boîtier de pompe (2) conçu pour être fixé à un col du contenant de fluide, un piston (11) étant situé à l'intérieur du boîtier (2). Une tige creuse mobile (13) est raccordée au piston (11) et peut être déplacée manuellement dans le boîtier de pompe (2) contre la sollicitation d'un ressort de compression (17). Un actionneur (14) est fourni, qui est situé sur une extrémité externe de la tige creuse (13) et qui définit une buse (12) à travers laquelle un fluide aspiré à partir du contenant dans la tige creuse (13) par le piston (11) est distribué. L'actionneur (14) comprend un manchon interne (25) qui prend appui contre l'extrémité externe de la tige creuse (13) et un manchon externe (26). Un collier (20) est fixé au boîtier de pompe (2) et entoure la tige creuse (13). Le collier (20) définit un canal de guidage annulaire (23) dans lequel le manchon externe (26) est poussé lorsque l'actionneur (14) est enfoncé pour distribuer un fluide à partir du contenant. Le manchon externe (26) de l'actionneur (14) est de préférence un ajustement serré à l'intérieur du canal de guidage (23) afin d'empêcher toute asymétrie significative de la tige creuse (13) lorsqu'elle se déplace dans le boîtier de pompe (2). Avantageusement, l'actionneur (14) est de préférence rotatif sur 90° entre une première position déverrouillée dans laquelle il peut être utilisé pour actionner le piston (11) et une seconde position verrouillée dans laquelle le mouvement de l'actionneur (14) est empêché.
PCT/EP2018/065865 2018-06-14 2018-06-14 Pompe à piston manuel pour un contenant de fluide Ceased WO2019238237A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/065865 WO2019238237A1 (fr) 2018-06-14 2018-06-14 Pompe à piston manuel pour un contenant de fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/065865 WO2019238237A1 (fr) 2018-06-14 2018-06-14 Pompe à piston manuel pour un contenant de fluide

Publications (1)

Publication Number Publication Date
WO2019238237A1 true WO2019238237A1 (fr) 2019-12-19

Family

ID=62684783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/065865 Ceased WO2019238237A1 (fr) 2018-06-14 2018-06-14 Pompe à piston manuel pour un contenant de fluide

Country Status (1)

Country Link
WO (1) WO2019238237A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022027926A1 (fr) * 2020-08-03 2022-02-10 宁波圣捷喷雾泵有限公司 Pompe à liquide respectueuse de l'environnement
US12240006B2 (en) * 2020-08-18 2025-03-04 Guangzhou Shanggong Plastic Co., Ltd All-plastic pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013408A1 (de) * 2005-03-23 2006-09-28 Saint-Gobain Calmar Gmbh Handkolbenpumpe mit blockierbarem Ausgabekopf zur Ausgabe von fluiden Substanzen
WO2008088095A1 (fr) * 2007-01-16 2008-07-24 Young-Joo Lee Dispositif de pompage avec buse amovible
JP2016069052A (ja) * 2014-09-30 2016-05-09 株式会社吉野工業所 ポンプ操作及び圧搾操作可能な液体吐出容器
EP3162450A1 (fr) * 2015-11-02 2017-05-03 Albea Thomaston Inc. Dispositif de distribution pour distribuer un produit liquide ou visqueux à partir d'un réservoir et réceptacle comprenant un tel dispositif de distribution

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013408A1 (de) * 2005-03-23 2006-09-28 Saint-Gobain Calmar Gmbh Handkolbenpumpe mit blockierbarem Ausgabekopf zur Ausgabe von fluiden Substanzen
WO2008088095A1 (fr) * 2007-01-16 2008-07-24 Young-Joo Lee Dispositif de pompage avec buse amovible
JP2016069052A (ja) * 2014-09-30 2016-05-09 株式会社吉野工業所 ポンプ操作及び圧搾操作可能な液体吐出容器
EP3162450A1 (fr) * 2015-11-02 2017-05-03 Albea Thomaston Inc. Dispositif de distribution pour distribuer un produit liquide ou visqueux à partir d'un réservoir et réceptacle comprenant un tel dispositif de distribution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022027926A1 (fr) * 2020-08-03 2022-02-10 宁波圣捷喷雾泵有限公司 Pompe à liquide respectueuse de l'environnement
US12240006B2 (en) * 2020-08-18 2025-03-04 Guangzhou Shanggong Plastic Co., Ltd All-plastic pump

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