EP1677917A1 - Dispenser pump - Google Patents

Dispenser pump

Info

Publication number
EP1677917A1
EP1677917A1 EP04791060A EP04791060A EP1677917A1 EP 1677917 A1 EP1677917 A1 EP 1677917A1 EP 04791060 A EP04791060 A EP 04791060A EP 04791060 A EP04791060 A EP 04791060A EP 1677917 A1 EP1677917 A1 EP 1677917A1
Authority
EP
European Patent Office
Prior art keywords
pump
dispenser
sleeve section
sleeve
spring
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.)
Granted
Application number
EP04791060A
Other languages
German (de)
French (fr)
Other versions
EP1677917B1 (en
Inventor
Frank Erwin Schulte
Karsten BÖHNISCH
Reinhard Heinrich Neuhaus
Cristin Knoblich
Norbert Menzel
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.)
Aptar Dortmund GmbH
Original Assignee
Seaquist Perfect Dispensing GmbH
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 Seaquist Perfect Dispensing GmbH filed Critical Seaquist Perfect Dispensing GmbH
Publication of EP1677917A1 publication Critical patent/EP1677917A1/en
Application granted granted Critical
Publication of EP1677917B1 publication Critical patent/EP1677917B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05B11/1001—Piston pumps
    • 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 dispenser pump according to the preamble of claims 1 and 12, respectively.
  • the term “donation pump” is to be understood in particular as a metering pump or manually operated pump for dispensing liquids, such as washing lotions for cleaning the human body, body care products, cleaning products, cosmetics, but also lubricants or the like.
  • EP 0 806 249 B1 which forms the starting point of the present invention, discloses a dispensing pump for dispensing liquid from a container.
  • a pump housing can be fastened to the container and holds a pump shaft, which can be pressed manually against spring force into the pump housing by a user pressing a dispenser button attached to the pump shaft.
  • Two sleeve sections are attached between the pump housing and the dispenser head to protect against splashing water and can be pushed into one another.
  • the return spring is arranged in the usual way in a pump cavity through which the liquids to be pumped flow.
  • the present invention is based on the object of specifying a dispensing pump which is suitable for viscous, aggressive liquids, in particular where a compact and robust construction with protection against splash water can be achieved.
  • a first aspect of the present invention is that the dispenser pump has at least one further sleeve section which adjoins the second sleeve section towards the pump housing and can be pushed into it, so that three or more sleeve sections have a telescopically extendable splash guard around the pump shaft between the Form the pump housing and the dispenser head.
  • a second aspect of the present invention which can also be implemented independently, is to arrange a spring provided for resetting the pump shaft radially outside the pump shaft and / or between the pump housing and the dispenser head, that is to say outside of areas that come into contact with the liquid to be pumped , This can prevent the spring, which is usually made of metal, from being attacked by the increasingly aggressive liquids.
  • a check valve in particular its valve ball, is preferably also made of plastic. This can prevent aggressive liquids from attacking the dispenser pump and / or metal ions being absorbed by the liquids and contaminating them. All parts of the dispensing pump that come into contact with the liquid are preferably metal-free, in particular made of plastic.
  • the illustrated dispensing pump 1 serves to dispense liquid 2, such as a washing lotion for cleaning the human body, a body care product, a cleaning product or the like.
  • the liquid 2 can in particular be relatively viscous and / or aggressive.
  • the Spende ⁇ umpe 1 is assigned a container 3, to which the Spende ⁇ umpe 1 is detachably attached if necessary.
  • the container 3 can be replaced and / or the liquid 2 can be refilled.
  • the dispenser pump 1 has a pump housing 4, which can be fastened to the container 3 - in the example shown by means of a collar or thread section 5, which is preferably directly molded on.
  • the dispenser pump 1 further has a pump shaft 6 and a dispenser head 7 arranged at the free end thereof.
  • the pump shaft 6 can be pressed in manually against the force of a spring 8 which brings about the resetting.
  • the spring 8 biases the pump shaft 6 with the dispenser head 7 upward into a starting position in the illustration.
  • the dispensing pump 1 has a suction nozzle 9 which is connected to the liquid to be pumped or extends into it, with a suction hose or the like connected to it, not shown, an inlet or remindstakventil 10 with a valve ball 11, a delivery chamber 12 and a pump piston 13.
  • the pump piston 13 can be moved back and forth in the delivery chamber 12 by means of the pump shaft 6, up and down in the illustrated example, the pump piston 13 being able to be displaced relative to the pump shaft 6 to a limited extent in order to alternately open and close through openings 14 into the interior 15 of the hollow pump shaft 6 or in some other way a valve device is realized, so that liquid 2 is sucked into the delivery chamber 12 when the pump piston 13 moves upwards and liquid 2 is pressed or conveyed through the interior 15 of the pump shaft 6 when the pump piston 13 moves down and is fed via the dispenser head 7.
  • EP 0 806 249 B1 which is hereby fully introduced as a supplementary disclosure, which is also essential to the invention.
  • the dispensing pump 1 has a first sleeve section 16, a second sleeve section 17 and a third sleeve section 18, which can be telescopically pushed or pulled out and radially surround the pump shaft 6 - spaced apart in the example shown.
  • the first sleeve section 16 extends from the dispenser head 7 to the pump housing 4 and is in particular molded onto or attached to the dispenser head 7.
  • the first sleeve section 16 surrounds or engages around the second sleeve section 17, which in turn surrounds or engages the third sleeve section 18 peripherally.
  • the third sleeve section 18 is held by the pump housing 4, in particular firmly connected to it, preferably molded onto it.
  • the dispensing pump 1 is usually used for a standing container 3, so that the axis of the pump shaft 6 or the pump movement runs essentially vertically. That overlap each other from top to bottom the sleeve sections 16, 17, 18 form an effective protection, in particular against splash water, but possibly also against dust or the like, so that penetration of splash water, dust or the like between the movable or displaceable - possibly also rotatable - pump shaft 6 and the pump housing 4 or a slide guide 19 of the pump housing 4 for the pump shaft 6 can be effectively prevented.
  • the first sleeve section 16 has an inner projection 20 on its end region adjacent to or free from the second sleeve section 17 , which engages behind an outer projection 21 on the second sleeve section 17, and the second sleeve section 17 on its end region adjacent to the third sleeve section 18 has an internal projection 22 which engages behind an outer projection 23 on the third sleeve section 18.
  • the inner projections 20, 22 and or the outer projections 21, 23 are preferably designed as ring shoulders, ring webs, cone sections or the like, preferably continuously around the circumference, in order on the one hand to provide a positive engagement in the axial direction against axial separation of the sleeve sections 16 to 18 and on the other hand to form a labyrinth seal for effective protection against splashing water or the like.
  • the ring surfaces of the inner protrusions 20, 22 and / or the outer protrusions 21, 23 which converge on one another when the sleeve sections 16, 17, 18 are axially inserted into one another are preferably bevelled or conical in order to form insertion bevels which facilitate the assembly, so that the sleeve sections 16, 17, 18 can be pushed into one another, in particular by latching or snapping.
  • the inner protrusions 20, 22 and / or the outer protrusions 21, 23 may not be continuous over the entire circumference, but may only be formed in regions or sections over the circumference.
  • the sleeve sections 16, 17, 18 can also be constructed by other against slipping out completely, for example through recesses on the wall, individual noses or other measures.
  • the sleeve sections 16, 17, 18 are preferably of essentially hollow cylindrical cross section with a circular cross section.
  • the sleeve sections 16, 17, 18 can also have other cross-sectional shapes, for example a polygonal, elliptical or oval cross-section or another, also irregular cross-sectional shape.
  • the figure shows the dispensing pump 1 with the pump shaft 6 extended, that is to say in the starting position.
  • the pump shaft 6 is pressed into the pump housing 4.
  • the sleeve sections 16, 17, 18 are pushed into one another or overlap and overlap one another at least substantially over the same axial length.
  • the ratio of the axial length in the retracted state to the total axial length of the sleeve sections 16, 17, 18 in the extended state is significantly smaller than in the prior art, so that for a given pump stroke (difference between the extended state and the retracted state) a significantly smaller one axial height of the dispenser pump 1 compared to the prior art can be realized.
  • the spring 8 is preferably made of metal, in particular spring steel, as usual. In the example shown, it is designed as a coil spring.
  • the spring 8 is arranged radially outside the pump shaft 6 and between the pump housing 4 and the dispenser head 7. In contrast to the prior art, the spring 8 does not come into contact with the liquid 2. Accordingly, the spring 8 cannot be attacked by aggressive liquids.
  • the spring 8 is covered by the sleeve sections 16, 17, 18 and thereby protected from splashing water and the like.
  • the spring 8 is supported on the one hand on the dispenser head 7 and on the other hand on the pump housing 4.
  • the spring 8 is preferably attached to a guide sleeve 24 held by the pump housing 4, which extends from the pump housing 4 approximately to the length of the third sleeve section 18 to the dispenser head 7 and an annular seal on the inside in the region of its free end 25 holds, which forms the aforementioned slide guide 19 for the pump shaft 6.
  • the spring 8 is thus arranged in the region of its lower or housing-side end in the annular space between the guide sleeve 24 and the third sleeve section 18, otherwise in the annular space between the pump shaft 6 and the other guide sleeves 16, 17.
  • valve 10 in particular its valve ball 11, is preferably made of plastic. With an appropriate choice of plastic, it can be avoided that increasingly aggressive liquids 2 attack the valve ball 11.
  • all parts or areas of the dispensing pump 1 which come into contact with the liquid 2 are made of suitable plastic, so that no metal parts come into contact with the increasingly aggressive liquids 2.
  • the proposed dispensing pump 1 is suitable for dispensing viscous and aggressive liquids 2.
  • the diameter of the delivery chamber 12 and the pump piston 13, which has a significant influence on the stiffness of the dispenser pump 1, is chosen to be sufficiently small, in particular for viscous or highly viscous liquids 2, to enable the dispenser pump 1 to be actuated sufficiently easily.
  • the pump stroke is extended accordingly.
  • the sleeve sections 16, 17, 18 which can be telescopically pushed into one another provide Based on a specific pump stroke, the axial height or length of the dispensing pump 1, which is considerably lower than in the prior art, can be realized.
  • three sleeve sections 16, 17, 18 are provided. Of course, four or more sleeve sections can also be provided if required.
  • a bellows-type protective element (not shown) or the like can also be provided if necessary to protect against splashing water.

Landscapes

  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A dispenser pump (1) that has a manually insertable pump shaft (6) which is surrounded by at least three sleeve sections (16, 17, 18) that can be slid into each other in a telescopic manner. A return spring (8) is preferably disposed between pump shaft (6) and the sleeve sections (16, 17, 18). All parts of the dispenser pump (1), which enter in contact with a liquid that is to be pumped, are made of plastic.

Description

Spenderpumpe dispenser pump
Die vorliegende Erfindung betrifft eine Spenderpumpe gemäß dem Oberbegriff des Anspruchs 1 bzw. 12.The present invention relates to a dispenser pump according to the preamble of claims 1 and 12, respectively.
Unter dem Begriff "Spendeφumpe" ist insbesondere eine Dosieφumpe oder handbetätigte Pumpe zur Abgabe von Flüssigkeiten, wie Waschlotionen für die Reinigung des menschlichen Köφers, Köφerpflegeprodukte, Reinigungsprodukte, Kosmetika, aber auch Schmiermittel oder dergleichen, zu verstehen.The term “donation pump” is to be understood in particular as a metering pump or manually operated pump for dispensing liquids, such as washing lotions for cleaning the human body, body care products, cleaning products, cosmetics, but also lubricants or the like.
Die EP 0 806 249 Bl, die den Ausgangspunkt der vorliegenden Erfindung bildet, offenbart eine Spendeφumpe zur Abgabe von Flüssigkeit aus einem Behälter. Ein Pumpengehäuse ist am Behälter befestigbar und hält einen Pumpenschaft, der in das Pumpengehäuse manuell gegen Federkraft ein- drückbar ist, indem ein Benutzer auf einen am Pumpenschaft angebrachten Spenderknopf drückt. Zwischen dem Pumpengehäuse und dem Spenderkopf sind als Spritzwasserschutz zwei Hülsenabschnitte angebracht, die ineinander schiebbar sind. Die Rückstellfeder ist in üblicher Weise in einem von der zu pumpenden Flüssigkeiten durchströmten Pumpenhohlraum angeordnet.EP 0 806 249 B1, which forms the starting point of the present invention, discloses a dispensing pump for dispensing liquid from a container. A pump housing can be fastened to the container and holds a pump shaft, which can be pressed manually against spring force into the pump housing by a user pressing a dispenser button attached to the pump shaft. Two sleeve sections are attached between the pump housing and the dispenser head to protect against splashing water and can be pushed into one another. The return spring is arranged in the usual way in a pump cavity through which the liquids to be pumped flow.
In jüngster Zeit werden zunehmend aggressive, viskose Flüssigkeiten, insbesondere in Form von Waschlotionen oder dergleichen, angeboten, die von Spendeφumpen in zunehmend größeren Dosiervolumen pro Pumpenhub ausgegeben werden sollen. Um bei gleicher Bedienkraft eine Flüssigkeit höherer Viskosität zu fördern und/oder eine größere Menge pro Hub zu fördern, ist ein größerer Pumpenhub erforderlich. Eine Verringerung des Pumpenhubs mit der Konsequenz, den Durchmesser des Pumpenzylinders zu vergrößern, hätte hingegen extreme Nachteile bzw. Probleme, höher viskose Flüssigkeiten oder sonstige Produkte ansaugen zu können bzw. mit einem akzeptablen Kraftauf- wand zu fordern.Recently, increasingly aggressive, viscous liquids, in particular in the form of washing lotions or the like, have been offered, which are to be dispensed by dispensing pumps in increasingly larger dosing volumes per pump stroke. In order to deliver a liquid of higher viscosity with the same operating force and / or to deliver a larger quantity per stroke, a larger pump stroke is required. A reduction in the pump stroke with the consequence of increasing the diameter of the pump cylinder, on the other hand, would have extreme disadvantages or problems of being able to draw in higher-viscosity liquids or other products or to require them with an acceptable effort.
Bei der bekannten Spendeφumpe führt der Spritzwasserschutz bei einer Erhöhung des Pumpenhubs zu einer übeφroportionalen Vergrößerung der axialen Bauhöhe. Weiter ist bei der bekannten Spendeφumpe nachteilig, daß sehr aggressive Flüssigkeiten die metallische Rückstellfeder oder ein metallisches Rücklagventil angreifen können.In the known Spendeφumpe the splash water protection leads to an overproportional increase in the axial height when the pump stroke is increased. Another disadvantage of the known dispenser pump is that aggressive liquids that can attack the metallic return spring or a metallic return valve.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Spendeφumpe anzugeben, die für viskose, aggressive Flüssigkeiten geeignet ist, insbesondere wobei ein kompakter und robuster Aufbau bei Schutz gegen Spritzwasser realisierbar ist.The present invention is based on the object of specifying a dispensing pump which is suitable for viscous, aggressive liquids, in particular where a compact and robust construction with protection against splash water can be achieved.
Die obige Aufgabe wird durch eine Spendeφumpe gemäß Anspruch 1 oder 12 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.The above object is achieved by a donation pump according to claim 1 or 12. Advantageous further developments are the subject of the dependent claims.
Ein erster Aspekt der vorliegenden Erfindung liegt darin, daß die Spenderpumpe mindestens einen weiteren Hülsenabschnitt aufweist, der sich an den zweiten Hülsenabschnitt zum Pumpengehäuse hin anschließt und in diesen einschiebbar ist, so daß drei oder mehr Hülsenabschnitte einen teleskopisch ausziehbaren Spritzwasserschutz um den Pumpenschaft herum zwischen dem Pumpengehäuse und dem Spenderkopf bilden. So wird bei vergrößertem Pumpenhub die über den Zuwachs des Pumpenhubs hinaus erforderliche zusätzliche axiale Bauhöhe gegenüber dem Stand der Technik wesentlich ver- ringert und dementsprechend ein kompakter Aufbau der Spendeφumpe ermöglicht. Weiter ergibt sich ein einfacher und damit kostengünstiger Aufbau mit einem wirksamen Spritzwasserschutz.A first aspect of the present invention is that the dispenser pump has at least one further sleeve section which adjoins the second sleeve section towards the pump housing and can be pushed into it, so that three or more sleeve sections have a telescopically extendable splash guard around the pump shaft between the Form the pump housing and the dispenser head. Thus, with an increased pump stroke, the additional axial overall height that is required in addition to the increase in the pump stroke is considerably reduced compared to the prior art, and accordingly a compact structure of the dispensing pump is made possible. Furthermore, there is a simple and therefore inexpensive construction with effective splash protection.
Ein zweiter, auch unabhängig realisierbarer Aspekt der vorliegenden Erfin- düng liegt darin, eine für die Rückstellung des Pumpenschafts vorgesehene Feder radial außerhalb des Pumpenschafts und/oder zwischen dem Pumpengehäuse und dem Spenderkopf, also außerhalb von in Kontakt mit der zu pumpenden Flüssigkeit tretenden Bereichen anzuordnen. So kann vermieden werden, daß die üblicherweise aus Metall bestehende Feder von den zuneh- mend aggressiveren Flüssigkeiten angegriffen wird.A second aspect of the present invention, which can also be implemented independently, is to arrange a spring provided for resetting the pump shaft radially outside the pump shaft and / or between the pump housing and the dispenser head, that is to say outside of areas that come into contact with the liquid to be pumped , This can prevent the spring, which is usually made of metal, from being attacked by the increasingly aggressive liquids.
Vorzugsweise ist ein Rückschlagventil, insbesondere dessen Ventilkugel, ebenfalls aus Kunststoff hergestellt. So kann verhindert werden, daß aggressive Flüssigkeiten die Spendeφumpe angreifen und/oder Metallionen von den Flüssigkeiten aufgenommen und diese dadurch verunreinigt werden. Vorzugsweise sind alle mit der Flüssigkeit in Kontakt tretenden Teile der Spendeφumpe metallfrei ausgebildet, insbesondere aus Kunststoff hergestellt.A check valve, in particular its valve ball, is preferably also made of plastic. This can prevent aggressive liquids from attacking the dispenser pump and / or metal ions being absorbed by the liquids and contaminating them. All parts of the dispensing pump that come into contact with the liquid are preferably metal-free, in particular made of plastic.
Weitere Vorteile, Merkmale, Eigenschaften und Aspekte der vorliegenden Er- findung ergeben sich aus der folgenden Beschreibung einer bevorzugten Ausführungsform anhand der Zeichnung. Die einzige Figur zeigt: eine schematische, ausschnittsweise Schnittdarstellung einer vorschlagsgemäßen Spendeφumpe mit einem zu pumpende Flüs- sigkeit enthaltenden, zugeordneten Behälter.Further advantages, features, properties and aspects of the present invention result from the following description of a preferred embodiment with reference to the drawing. The single figure shows: a schematic, sectional sectional view of a proposed dispensing pump with an assigned container containing liquid to be pumped.
Die dargestellte Spendeφumpe 1 dient einer Abgabe von Flüssigkeit 2, wie einer Waschlotion für die Reinigung des menschlichen Köφers, eines Kör- peφflegeprodukts, eines Reinigungsprodukts oder dergleichen. Die Flüssig- keit 2 kann insbesondere verhältnismäßig viskos und/oder aggressiv sein.The illustrated dispensing pump 1 serves to dispense liquid 2, such as a washing lotion for cleaning the human body, a body care product, a cleaning product or the like. The liquid 2 can in particular be relatively viscous and / or aggressive.
Der Spendeφumpe 1 ist ein Behälter 3 zugeordnet, an dem die Spendeφumpe 1 bedarfsweise lösbar befestigt ist. So kann gegebenenfalls ein Austausch des Behälters 3 und/oder ein Nachfüllen der Flüssigkeit 2 erfolgen.The Spendeφumpe 1 is assigned a container 3, to which the Spendeφumpe 1 is detachably attached if necessary. For example, the container 3 can be replaced and / or the liquid 2 can be refilled.
Die Spendeφumpe 1 weist ein Pumpengehäuse 4 auf, das am Behälter 3 - beim Darstellungsbeispiel mittels eines vorzugsweise unmittelbar angeformten Kragen- bzw. Gewindeabschnitts 5 - befestigbar ist.The dispenser pump 1 has a pump housing 4, which can be fastened to the container 3 - in the example shown by means of a collar or thread section 5, which is preferably directly molded on.
Die Spendeφumpe 1 weist weiter einen Pumpenschaft 6 und einen am freien Ende davon angeordneten Spenderkopf 7 auf.The dispenser pump 1 further has a pump shaft 6 and a dispenser head 7 arranged at the free end thereof.
Der Pumpenschaft 6 ist manuell gegen die Kraft einer die Rückstellung bewirkenden Feder 8 eindrückbar. Die Feder 8 spannt den Pumpenschaft 6 mit dem Spenderkopf 7 bei der Darstellung nach oben in eine Ausgangsstellung vor.The pump shaft 6 can be pressed in manually against the force of a spring 8 which brings about the resetting. The spring 8 biases the pump shaft 6 with the dispenser head 7 upward into a starting position in the illustration.
Die Spendeφumpe 1 weist einen mit der zu pumpenden Flüssigkeit 2 in Verbindung stehenden bzw. in diese hineinreichenden Ansaugstutzen 9 mit einem daran angeschlossenen, nicht dargestellten Ansaugschlauch oder dergleichen, ein Einlaß- bzw. Rückstakventil 10 mit einer Ventilkugel 11, einen Förderraum 12 und einen Pumpenkolben 13 auf.The dispensing pump 1 has a suction nozzle 9 which is connected to the liquid to be pumped or extends into it, with a suction hose or the like connected to it, not shown, an inlet or Rückstakventil 10 with a valve ball 11, a delivery chamber 12 and a pump piston 13.
Der Pumpenkolben 13 ist mittels des Pumpenschafts 6 im Förderraum 12 hin und her, beim Darstellungsbeispiel auf und ab bewegbar, wobei der Pumpenkolben 13 zum abwechselnden Freigeben und Verschließen von Durchgangsöffnungen 14 in den Innenraum 15 des hohlen Pumpenschafts 6 relativ zum Pumpenschaft 6 begrenzt verschiebbar und/oder auf sonstige Weise eine Ventileinrichtung realisiert ist, so daß bei Aufwärtsbewegung des Pumpenkolbens 13 Flüssigkeit 2 in den Förderraum 12 gesaugt und bei Abwärtsbewegung des Pumpenkolbens 13 Flüssigkeit 2 durch den Innenraum 15 des Pumpenschafts 6 gepreßt bzw. gefördert und über den Spenderkopf 7 aufgegeben wird.The pump piston 13 can be moved back and forth in the delivery chamber 12 by means of the pump shaft 6, up and down in the illustrated example, the pump piston 13 being able to be displaced relative to the pump shaft 6 to a limited extent in order to alternately open and close through openings 14 into the interior 15 of the hollow pump shaft 6 or in some other way a valve device is realized, so that liquid 2 is sucked into the delivery chamber 12 when the pump piston 13 moves upwards and liquid 2 is pressed or conveyed through the interior 15 of the pump shaft 6 when the pump piston 13 moves down and is fed via the dispenser head 7.
Zu Einzelheiten einer möglichen Realisierung der Pumpenmechanik wird er- gänzend auf die EP 0 806 249 Bl verwiesen, die hiermit als ergänzende, auch erfindungswesentliche Offenbarung voll umfänglich eingeführt wird.For details of a possible implementation of the pump mechanism, reference is also made to EP 0 806 249 B1, which is hereby fully introduced as a supplementary disclosure, which is also essential to the invention.
Die Spendeφumpe 1 weist einen ersten Hülsenabschnitt 16, einen zweiten Hülsenabschnitt 17 und einen dritten Hülsenabschnitt 18 auf, die teleskopisch ineinander schiebbar bzw. ausziehbar sind und den Pumpenschaft 6 radial - beim Darstellungsbeispiel beabstandet - umgeben.The dispensing pump 1 has a first sleeve section 16, a second sleeve section 17 and a third sleeve section 18, which can be telescopically pushed or pulled out and radially surround the pump shaft 6 - spaced apart in the example shown.
Der erste Hülsenabschnitt 16 erstreckt sich vom Spenderkopf 7 zum Pumpengehäuse 4 hin und ist insbesondere an den Spenderkopf 7 angeformt oder an diesem befestigt.The first sleeve section 16 extends from the dispenser head 7 to the pump housing 4 and is in particular molded onto or attached to the dispenser head 7.
Der erste Hülsenabschnitt 16 um- bzw. übergreift den zweiten Hülsenabschnitt 17 peripher, der seinerseits den dritten Hülsenabschnitt 18 peripher um- bzw. übergreift.The first sleeve section 16 surrounds or engages around the second sleeve section 17, which in turn surrounds or engages the third sleeve section 18 peripherally.
Der dritte Hülsenabschnitt 18 ist vom Pumpengehäuse 4 gehalten, insbesondere mit diesem fest verbunden, vorzugsweise an dieses angeformt.The third sleeve section 18 is held by the pump housing 4, in particular firmly connected to it, preferably molded onto it.
Die Spendeφumpe 1 wird üblicherweise für einen stehenden Behälter 3 ver- wendet, so daß die Achse des Pumpenschafts 6 bzw. der Pumpbewegung im wesentlichen vertikal verläuft. Die einander von oben nach unten überlappen- den Hülsenabschnitte 16, 17, 18 bilden einen wirksamen Schutz, insbesondere gegen Spritzwasser, gegebenenfalls aber auch gegen Staub oder dergleichen, so daß ein Eindringen von Spritzwasser, Staub oder dergleichen zwischen dem bewegbaren bzw. verschiebbaren - gegebenenfalls auch verdrehbaren - Pumpenschaft 6 und dem Pumpengehäuse 4 bzw. einer Gleitführung 19 des Pumpengehäuses 4 für den Pumpenschaft 6 wirksam verhindert werden kann.The dispensing pump 1 is usually used for a standing container 3, so that the axis of the pump shaft 6 or the pump movement runs essentially vertically. That overlap each other from top to bottom the sleeve sections 16, 17, 18 form an effective protection, in particular against splash water, but possibly also against dust or the like, so that penetration of splash water, dust or the like between the movable or displaceable - possibly also rotatable - pump shaft 6 and the pump housing 4 or a slide guide 19 of the pump housing 4 for the pump shaft 6 can be effectively prevented.
Um sicherzustellen, daß sich die Hülsenabschnitte 16 bis 18 in jeder axialen Lage des Pumpenschafts 6 überlappen, also in axialer Richtung nicht voll- ständig herausrutschen, weist der erste Hülsenabschnitt 16 an seinem dem zweiten Hülsenabschnitt 17 benachbarten bzw. freien Endbereich einen In- nenvorsprung 20, der einen Außenvorsprung 21 am zweiten Hülsenabschnitt 17 hintergreift, und der zweite Hülsenabschnitt 17 an seinem dem dritten Hülsenabschnitt 18 benachbarten Endbereich einen Iimenvorsprung 22 auf, der einen Außenvorsprung 23 am dritten Hülsenabschnitt 18 hintergreift. Die In- nenvorsprünge 20, 22 und oder die Außenvorsprünge 21, 23 sind vorzugsweise als Ringschulter, Ringstege, Konusabschnitte oder dergleichen, vorzugsweise um den Umfang herum durchgehend, ausgebildet, um einerseits einen formschlüssigen Hintergriff in axialer Richtung gegen ein axiales Trennen der Hülsenabschnitte 16 bis 18 und andererseits eine Labyrinthdichtung zum wirksamen Schutz gegen Spritzwasser oder dergleichen zu bilden.In order to ensure that the sleeve sections 16 to 18 overlap in each axial position of the pump shaft 6, that is to say do not completely slide out in the axial direction, the first sleeve section 16 has an inner projection 20 on its end region adjacent to or free from the second sleeve section 17 , which engages behind an outer projection 21 on the second sleeve section 17, and the second sleeve section 17 on its end region adjacent to the third sleeve section 18 has an internal projection 22 which engages behind an outer projection 23 on the third sleeve section 18. The inner projections 20, 22 and or the outer projections 21, 23 are preferably designed as ring shoulders, ring webs, cone sections or the like, preferably continuously around the circumference, in order on the one hand to provide a positive engagement in the axial direction against axial separation of the sleeve sections 16 to 18 and on the other hand to form a labyrinth seal for effective protection against splashing water or the like.
Die beim Zusammenbau der Hülsenabschnitte 16, 17, 18 beim axialen Inein- anderstecken aufeinander auflaufenden Ringflächen der Innenvorsprünge 20, 22 und/oder der Außenvorsprünge 21, 23 sind vorzugsweise abgeschrägt bzw. konisch ausgebildet, um Einführschrägen zu bilden, die den Zusammenbau erleichtern, so daß die Hülsenabschnitte 16, 17, 18 insbesondere rastend bzw. schnappend ineinander einschiebbar sind.The ring surfaces of the inner protrusions 20, 22 and / or the outer protrusions 21, 23 which converge on one another when the sleeve sections 16, 17, 18 are axially inserted into one another are preferably bevelled or conical in order to form insertion bevels which facilitate the assembly, so that the sleeve sections 16, 17, 18 can be pushed into one another, in particular by latching or snapping.
Bedarfsweise können die Innenvorsprünge 20, 22 und/oder die Außenvorsprünge 21, 23 auch über den gesamten Umfang nicht durchgehend, sondern gegebenenfalls nur bereichsweise bzw. abschnittsweise über den Umfang ausgebildet sein.If necessary, the inner protrusions 20, 22 and / or the outer protrusions 21, 23 may not be continuous over the entire circumference, but may only be formed in regions or sections over the circumference.
Anstelle der Innenvorsprünge 20, 22 und/oder Außenvorsprünge 21, 23 können die Hülsenabschnitte 16, 17, 18 auch durch sonstige konstruktive Maß- nahmen gegen ein vollständiges Herausrutschen, beispielsweise durch wand- seitige Ausnehmungen, einzelne Nasen oder sonstige Maßnahmen, gesichert sein.Instead of the inner protrusions 20, 22 and / or outer protrusions 21, 23, the sleeve sections 16, 17, 18 can also be constructed by other against slipping out completely, for example through recesses on the wall, individual noses or other measures.
Beim Darstellungsbeispiel sind die Hülsenabschnitte 16, 17, 18 im Querschnitt vorzugsweise im wesentlichen hohlzylindrisch mit kreisförmigem Querschnitt ausgebildet. Jedoch können die Hülsenabschnitte 16, 17, 18 auch andere Querschnittsformen, beispielsweise einen polygonalen, elliptischen bzw. ovalen Querschnitt oder eine sonstige, auch unregelmäßige Querschnitts- form, aufweisen.In the example shown, the sleeve sections 16, 17, 18 are preferably of essentially hollow cylindrical cross section with a circular cross section. However, the sleeve sections 16, 17, 18 can also have other cross-sectional shapes, for example a polygonal, elliptical or oval cross-section or another, also irregular cross-sectional shape.
Die Figur zeigt die Spendeφumpe 1 mit ausgefahrenem Pumpenschaft 6, also in der Ausgangsstellung. Beim Betätigen der Spendeφumpe 1, wobei der Benutzer insbesondere auf den Spenderkopf 7 drückt, wird der Pumpenschaft 6 in das Pumpengehäuse 4 eingedrückt. Hierbei werden die Hülsenabschnitte 16, 17, 18 ineinander- bzw. zusammengeschoben und überlappen einander zumindest im wesentlichen über die gleiche axiale Länge.The figure shows the dispensing pump 1 with the pump shaft 6 extended, that is to say in the starting position. When the dispensing pump 1 is actuated, the user pressing in particular on the dispenser head 7, the pump shaft 6 is pressed into the pump housing 4. Here, the sleeve sections 16, 17, 18 are pushed into one another or overlap and overlap one another at least substantially over the same axial length.
Das Verhältnis der axialen Baulänge in dem eingefahrenen Zustand zu der axialen Gesamtlänge der Hülsenabschnitte 16, 17, 18 im ausgefahrenen Zustand ist wesentlich kleiner als beim Stand der Technik, so daß bei einem vorgegebenen Pumpenhub (Differenz zwischen ausgefahrenem Zustand und eingefahrenem Zustand) eine wesentlich geringere axiale Bauhöhe der Spenderpumpe 1 gegenüber dem Stand der Technik realisierbar ist.The ratio of the axial length in the retracted state to the total axial length of the sleeve sections 16, 17, 18 in the extended state is significantly smaller than in the prior art, so that for a given pump stroke (difference between the extended state and the retracted state) a significantly smaller one axial height of the dispenser pump 1 compared to the prior art can be realized.
Die Feder 8 besteht vorzugsweise aus Metall, insbesondere Federstahl, wie üblich. Sie ist beim Darstellungsbeispiel als Schraubenfeder ausgebildet.The spring 8 is preferably made of metal, in particular spring steel, as usual. In the example shown, it is designed as a coil spring.
Die Feder 8 ist radial außerhalb des Pumpenschafts 6 und zwischen dem Pumpengehäuse 4 und dem Spenderkopf 7 angeordnet. So tritt die Feder 8 im Gegensatz zum Stand der Technik nicht mit der Flüssigkeit 2 in Kontakt. Dementsprechend kann die Feder 8 von aggressiven Flüssigkeiten nicht angegriffen werden.The spring 8 is arranged radially outside the pump shaft 6 and between the pump housing 4 and the dispenser head 7. In contrast to the prior art, the spring 8 does not come into contact with the liquid 2. Accordingly, the spring 8 cannot be attacked by aggressive liquids.
Die Feder 8 ist von den Hülsenabschnitten 16, 17, 18 überdeckt und dadurch vor Spritzwasser und dergleichen geschützt. Die Feder 8 ist einerseits am Spenderkopf 7 und andererseits am Pumpengehäuse 4 abgestützt.The spring 8 is covered by the sleeve sections 16, 17, 18 and thereby protected from splashing water and the like. The spring 8 is supported on the one hand on the dispenser head 7 and on the other hand on the pump housing 4.
An der Seite des Pumpengehäuses 4 ist die Feder 8 vorzugsweise auf eine vom Pumpengehäuse 4 gehaltene Führungshülse 24 aufgesteckt, die sich vom Pumpengehäuse 4 etwa bis zu der Länge des dritten Hülsenabschnitts 18 zum Spenderkopf 7 hin erstreckt und im Bereich ihres freien Endes innenseitig eine ringförmige Dichtung 25 hält, die die bereits genannte Gleitführung 19 für den Pumpenschaft 6 bildet.On the side of the pump housing 4, the spring 8 is preferably attached to a guide sleeve 24 held by the pump housing 4, which extends from the pump housing 4 approximately to the length of the third sleeve section 18 to the dispenser head 7 and an annular seal on the inside in the region of its free end 25 holds, which forms the aforementioned slide guide 19 for the pump shaft 6.
Die Feder 8 ist also im Bereich ihres unteren bzw. gehäuseseitigen Endes im Ringraum zwischen der Führungshülse 24 und dem dritten Hülsenabschnitt 18 angeordnet, ansonsten in dem Ringraum zwischen dem Pumpenschaft 6 und den anderen Führungshülsen 16, 17.The spring 8 is thus arranged in the region of its lower or housing-side end in the annular space between the guide sleeve 24 and the third sleeve section 18, otherwise in the annular space between the pump shaft 6 and the other guide sleeves 16, 17.
Das Ventil 10, insbesondere dessen Ventilkugel 11, ist vorzugsweise aus Kunststoff ausgebildet. Bei entsprechender Wahl des Kunststoffes kann so vermieden werden, daß zunehmend aggressivere Flüssigkeiten 2 die Ventil- kugel 11 angreifen.The valve 10, in particular its valve ball 11, is preferably made of plastic. With an appropriate choice of plastic, it can be avoided that increasingly aggressive liquids 2 attack the valve ball 11.
Insbesondere sind alle mit der Flüssigkeit 2 in Kontakt tretenden Teile bzw. Bereiche der Spendeφumpe 1 aus geeignetem Kunststoff hergestellt, so daß keine Metallteile mit dem zunehmend aggressiveren Flüssigkeiten 2 in Kon- takt treten.In particular, all parts or areas of the dispensing pump 1 which come into contact with the liquid 2 are made of suitable plastic, so that no metal parts come into contact with the increasingly aggressive liquids 2.
Aus dem Vorgenannten ergibt sich, daß die vorschlagsgemäße Spendeφumpe 1 zur Abgabe von viskosen und aggressiven Flüssigkeiten 2 geeignet ist. Der die Schwergängigkeit der Spenderpumpe 1 maßgeblich beeinflussende Durchmesser des Förderraums 12 und des Pumpenkolbens 13 wird insbesondere für viskose oder hochviskose Flüssigkeiten 2 ausreichend klein gewählt, um eine ausreichend leichte Betätigung der Spendeφumpe 1 zu ermöglichen. Um die gewünschte Fördermenge von vorzugsweise mindestens 2 ml, insbesondere mindestens 3 ml oder mehr, pro Pumpenhub zu erreichen, verlängert sich der Pumpenhub entsprechend. Durch die vorschlagsgemäß vorgesehenen, teleskopisch ineinander schiebbaren Hülsenabschnitte 16, 17, 18 kann ausge- hend von einem bestimmten Pumpenhub eine gegenüber dem Stand der Technik wesentlich geringere axiale Bauhöhe bzw. Baulänge der Spendeφumpe 1 realisiert werden.It follows from the above that the proposed dispensing pump 1 is suitable for dispensing viscous and aggressive liquids 2. The diameter of the delivery chamber 12 and the pump piston 13, which has a significant influence on the stiffness of the dispenser pump 1, is chosen to be sufficiently small, in particular for viscous or highly viscous liquids 2, to enable the dispenser pump 1 to be actuated sufficiently easily. In order to achieve the desired delivery rate of preferably at least 2 ml, in particular at least 3 ml or more, per pump stroke, the pump stroke is extended accordingly. The sleeve sections 16, 17, 18 which can be telescopically pushed into one another provide Based on a specific pump stroke, the axial height or length of the dispensing pump 1, which is considerably lower than in the prior art, can be realized.
Beim Darstellungsbeispiel sind drei Hülsenabschnitte 16, 17, 18 vorgesehen. Selbstverständlich können bei Bedarf auch vier oder mehr Hülsenabschnitte vorgesehen sein.In the example shown, three sleeve sections 16, 17, 18 are provided. Of course, four or more sleeve sections can also be provided if required.
Anstelle der zumindest im wesentlichen starr ausgebildeten Hülsenabschnitte 16, 17, 18 kann zum Schutz gegen Spritzwasser bedarfsweise auch ein balgartiges, nicht dargestelltes Schutzelement oder dergleichen vorgesehen sein. Instead of the at least substantially rigid sleeve sections 16, 17, 18, a bellows-type protective element (not shown) or the like can also be provided if necessary to protect against splashing water.

Claims

Patentansprüche: claims:
1. Spendeφumpe (1) zur Abgabe von Flüssigkeit (2) aus einem Behälter (3), mit einem am Behälter (3) befestigbaren Pumpengehäuse (4), einem Pumpenschaft (6), der relativ zum Pumpengehäuse (4) bewegbar, insbesondere in dieses manuell eindrückbar ist, einem Spenderkopf (7) am Pumpenschaft (6), einem ersten Hülsenabschnitt (16), der sich vom Spenderkopf (7) zum Pumpengehäuse (4) hin erstreckt und den Pumpenschaft gradial umgibt, und einem zweiten Hülsenabschnitt (17), der sich an den ersten Hülsenabschnitt (16) zum Pumpengehäuse (4) hin anschließt und in diesen einschiebbar ist, wobei der erste Hülsenabschnitt (16) in jeder axialen Lage des Pumpenschafts (6) den zweiten Hülsenabschnitt (17) peripher übergreift, dadurch gekennzeichnet, daß die Spendeφumpe (1) einen dritten Hülsenabschnitt (18) aufweist, der sich an den zweiten Hülsenabschnitt (17) zum Pumpengehäuse (4) hin an- schließt und in diesen einschiebbar ist, wobei der zweite Hülsenabschnitt (17) in jeder axialen Lage des Pumpenschafts (6) den dritten Hülsenabschnitt (18) peripher übergreift, so daß der erste, zweite und dritte Hülsenabschnitt (16, 17, 18) einen teleskopisch ausziehbaren Spritzwasserschutz um den Pumpenschaft (6) herum zwischen dem Pumpengehäuse (4) und dem Spenderkopf (7) bilden.1. Dispenser pump (1) for dispensing liquid (2) from a container (3), with a pump housing (4) which can be fastened to the container (3), a pump shaft (6) which can be moved relative to the pump housing (4), in particular in this can be pushed in manually, a dispenser head (7) on the pump shaft (6), a first sleeve section (16) which extends from the dispenser head (7) to the pump housing (4) and surrounds the pump shaft in a gradual manner, and a second sleeve section (17) , which adjoins the first sleeve section (16) towards the pump housing (4) and can be inserted therein, the first sleeve section (16) overlapping the second sleeve section (17) in every axial position of the pump shaft (6), characterized in that that the dispenser pump (1) has a third sleeve section (18) which connects to the second sleeve section (17) towards the pump housing (4) and can be pushed into it, the second sleeve section (17) in each axia len position of the pump shaft (6) overlaps the third sleeve section (18) peripherally, so that the first, second and third sleeve section (16, 17, 18) a telescopically extendable splash guard around the pump shaft (6) between the pump housing (4) and form the dispenser head (7).
2. Spendeφumpe nach Anspruch 1, dadurch gekennzeichnet, daß der erste Hülsenabschnitt (16) am Spenderkopf (7) angebracht, insbesondere angeformt ist.2. Dispenser pump according to claim 1, characterized in that the first sleeve section (16) on the dispenser head (7) is attached, in particular is integrally formed.
3. Spendeφumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der erste Hülsenabschnitt (16) an seinem dem zweiten Hülsenabschnitt (17) benachbarten Endbereich einen Innenvorsprung (20) aufweist, der mit dem zweiten Hülsenabschnitt (17), insbesondere einem Außenvorsprung (21) des zweiten Hülsenabschnitts (17) an seinem dem ersten Hüttenabschnitt (16) be- nachbarten Endbereich, in Eingriff bringbar ist, so daß der zweite Hülsenabschnitt (17) nicht aus dem ersten Hülsenabschnitt (16) herausziehbar ist.3. Dispenser pump according to claim 1 or 2, characterized in that the first sleeve section (16) at its end region adjacent to the second sleeve section (17) has an inner projection (20) with the second sleeve section (17), in particular an outer projection (21st ) of the second sleeve section (17) on its first hut section (16) adjacent end region can be brought into engagement, so that the second sleeve section (17) cannot be pulled out of the first sleeve section (16).
4. Spendeφumpe nach einem der voranstehenden Ansprüche, dadurch ge- kennzeichnet, daß der zweite Hülsenabschnitt (17) an seinem dem dritten Hülsenabschnitt (18) benachbarten Endbereich einen Innenvorsprung (22) aufweist, der mit dem dritten Hülsenabschnitt (18), insbesondere einem Außenvorsprung (23) des dritten Hülsenabschnitts (18) an seinem dem zweiten Hüttenabschnitt (17) benachbarten Endbereich, in Eingriff bringbar ist, so daß der dritte Hülsenabschnitt (18) nicht aus dem zweiten Hülsenabschnitt (17) herausziehbar ist.4. Dispenser pump according to one of the preceding claims, characterized in that the second sleeve section (17) has at its end region adjacent to the third sleeve section (18) an inner protrusion (22) with the third sleeve section (18), in particular an outer protrusion (23) of the third sleeve section (18) can be brought into engagement at its end region adjacent to the second hut section (17), so that the third sleeve section (18) cannot be pulled out of the second sleeve section (17).
5. Spendeφumpe nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Innenvorsprung (20, 22) und der Außenvorsprung (21, 23) jeweils einander hintergreifen.5. Spendeφumpe according to claim 3 or 4, characterized in that the inner projection (20, 22) and the outer projection (21, 23) each engage behind one another.
6. Spendeφumpe nach einem der Anspräche 3 bis 5, dadurch gekennzeichnet, daß der Innenvorsprung (20, 22) und/oder der Außenvorsprung (21, 23) als Ringschulter ausgebildet ist bzw. sind.6. Dispenser pump according to one of the claims 3 to 5, characterized in that the inner projection (20, 22) and / or the outer projection (21, 23) is or are designed as an annular shoulder.
7. Spendeφumpe nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der dritte Hülsenabschnitt (18) am Pumpengehäuse (4) angebracht, insbesondere an einem Kragen des Pumpengehäuses (18) befestigt oder daran angeformt ist.7. Dispenser pump according to one of the preceding claims, characterized in that the third sleeve section (18) is attached to the pump housing (4), in particular attached to or molded onto a collar of the pump housing (18).
8. Spendeφumpe nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Hülsenabschnitte (16, 17, 18) oder zumindest deren Überlappungsbereiche bei eingefahrenem Pumpenschaft (6) zumindest im wesentlichen gleich lang sind.8. Dispenser pump according to one of the preceding claims, characterized in that the sleeve sections (16, 17, 18) or at least their overlap regions when the pump shaft (6) is retracted are at least essentially of the same length.
9. Spendeφumpe nach einem der voranstehenden Anspräche, dadurch gekennzeichnet, daß die Hülsenabschnitte (16, 17, 18) rastend ineinander schiebbar bzw. überlappbar sind.9. Dispenser pump according to one of the preceding claims, characterized in that the sleeve sections (16, 17, 18) can be pushed into one another or can be overlapped.
10. Spendeφumpe nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Spendeφumpe (1) eine Führungshülse (24) aufweist, die vom Pumpengehäuse (4) zum Spenderkopf (7) hin abragt und den Pumpenschaft (6) umgibt und vorzugsweise führt.10. Dispenser pump according to one of the preceding claims, characterized in that the dispenser pump (1) has a guide sleeve (24), which protrudes from the pump housing (4) to the dispenser head (7) and surrounds and preferably guides the pump shaft (6).
11. Spendeφumpe nach Anspruch 10, dadurch gekemizeichnet, daß der dritte Hülsenabschnitt (18) die Führungshülse (24) radial beabstandet umgibt und dazwischen ein Ringraum gebildet ist.11. Dispenser pump according to claim 10, characterized in that the third sleeve section (18) surrounds the guide sleeve (24) at a radial distance and an annular space is formed therebetween.
12. Spendeφumpe (1) zur Abgabe von Flüssigkeit (2) aus einem Behälter (3), insbesondere nach einem der voranstehenden Ansprüche, mit einem am Behälter (3) befestigbaren Pumpengehäuse (4), einem Pumpenschaft (6), der relativ zum Pumpengehäuse (4) bewegbar, insbesondere in dieses manuell eindräckbar ist, einem Spenderkopf (7) am Pumpenschaft (6) und einer den Pumpenschaft (6) vorspannenden Feder (8), dadurch gekennzeichnet, daß die Feder (8) radial außerhalb des Pumpenschafts (6) und/oder zwischen dem Pumpengehäuse (4) und dem Spenderkopf (7) angeordnet ist.12. Dispenser pump (1) for dispensing liquid (2) from a container (3), in particular according to one of the preceding claims, with a pump housing (4) which can be fastened to the container (3), a pump shaft (6) which is relative to the pump housing (4) can be moved, in particular can be manually pressed into it, a dispenser head (7) on the pump shaft (6) and a spring (8) which prestresses the pump shaft (6), characterized in that the spring (8) radially outside the pump shaft (6 ) and / or between the pump housing (4) and the dispenser head (7).
13. Spendeφumpe nach einem der Anspräche 1 bis 11 und nach Anspruch 11, dadurch gekennzeichnet, daß die Feder (8) von den Hülsenabschnitten (16, 17, 18) radial umgeben ist.13. Dispenser pump according to one of claims 1 to 11 and according to claim 11, characterized in that the spring (8) is radially surrounded by the sleeve sections (16, 17, 18).
14. Spendeφumpe nach Anspruch 13, dadurch gekennzeichnet, daß die Feder (8) radial zwischen dem Pumpenschaft (6) und den Hülsenabschnitten (16, 17,14. Dispenser pump according to claim 13, characterized in that the spring (8) radially between the pump shaft (6) and the sleeve sections (16, 17,
18) angeordnet ist.18) is arranged.
15. Spenderpumpe nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß die Feder (8) aus Metall, insbesondere Federstahl, besteht.15. Dispenser pump according to one of claims 12 to 14, characterized in that the spring (8) consists of metal, in particular spring steel.
16. Spendeφumpe nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, daß die Feder (8) als Schraubenfeder ausgebildet ist. 16. Dispenser pump according to one of claims 12 to 15, characterized in that the spring (8) is designed as a helical spring.
17. Spendeφumpe nach einem der vorangehenden Anspräche, dadurch gekennzeichnet, daß die Spendeφumpe (1) ein Ventil (10) mit einer Ventilkugel (11) aus Kunststoff aufweist.17. Dispenser pump according to one of the preceding claims, characterized in that the dispenser pump (1) has a valve (10) with a valve ball (11) made of plastic.
18. Spenderpumpe nach einem der voranstehenden Anspräche, dadurch gekennzeichnet, daß alle mit der Flüssigkeit (2) in Kontakt kommenden Teile metallfrei ausgebildet, insbesondere aus Kunststoff hergestellt sind. 18. Dispenser pump according to one of the preceding claims, characterized in that all parts coming into contact with the liquid (2) are metal-free, in particular are made of plastic.
EP04791060A 2003-10-31 2004-10-29 Dispenser pump Expired - Lifetime EP1677917B1 (en)

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DE10351288A DE10351288B3 (en) 2003-10-31 2003-10-31 dispenser pump
PCT/EP2004/012304 WO2005042172A1 (en) 2003-10-31 2004-10-29 Dispenser pump

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EP1677917B1 EP1677917B1 (en) 2007-12-12

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EP (1) EP1677917B1 (en)
CN (1) CN100518952C (en)
AT (1) ATE380601T1 (en)
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DE (2) DE10351288B3 (en)
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ES2295942T3 (en) 2008-04-16
CA2544103A1 (en) 2005-05-12
CA2544103C (en) 2012-08-21
ATE380601T1 (en) 2007-12-15
US20070045348A1 (en) 2007-03-01
CN1874849A (en) 2006-12-06
WO2005042172A1 (en) 2005-05-12
CN100518952C (en) 2009-07-29
DE10351288B3 (en) 2005-07-21
US7819291B2 (en) 2010-10-26
DE502004005724D1 (en) 2008-01-24
EP1677917B1 (en) 2007-12-12

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