EP0516636B1 - Dispenser for media - Google Patents

Dispenser for media Download PDF

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Publication number
EP0516636B1
EP0516636B1 EP91902680A EP91902680A EP0516636B1 EP 0516636 B1 EP0516636 B1 EP 0516636B1 EP 91902680 A EP91902680 A EP 91902680A EP 91902680 A EP91902680 A EP 91902680A EP 0516636 B1 EP0516636 B1 EP 0516636B1
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EP
European Patent Office
Prior art keywords
valve
valve body
dispenser according
piston
channel portion
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.)
Expired - Lifetime
Application number
EP91902680A
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German (de)
French (fr)
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EP0516636A1 (en
Inventor
Karl-Heinz Fuchs
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 Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
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Filing date
Publication date
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Publication of EP0516636A1 publication Critical patent/EP0516636A1/en
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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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • 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
    • B05B11/0005—Components or details
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • 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
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons

Definitions

  • the invention relates to a discharge device according to independent claims 1 and 10 for flowable and similar media, which can be gaseous, liquid, pasty, powdered or the like.
  • a discharge device in which the pump chamber is formed by a cup-shaped container, in the middle of which a pin is formed, which protrudes with a sleeve into an outlet channel.
  • the invention is based on the object, in particular to achieve a high degree of positional security or a very secure closure by the respective valve.
  • At least one valve is fixed in at least one position, in particular in the closed position, by at least one escapement in the manner of a catch or the like, so that it e.g. in the case of an open position immovable or in the case of a closed position it can be held in this position in such a way that it only overcomes the inhibition with the application of a predetermined disengagement force and then suddenly in order to get into another position.
  • the catch is expediently formed directly by the contact between a valve body and a valve seat.
  • the valve body is designed to be axially symmetrical or centrically symmetrical, and it can be inserted as a self-contained structural unit with pretension in a channel section which forms a valve seat located in its jacket.
  • the inhibition or detent can also be generated by a fluid against which the valve works under pressure changes during the transfer between two positions, so that there is a kind of fluid suspension or damping.
  • the valve body can narrow a pressure chamber which is formed, for example, by a gas-filled or air-filled blind hole section adjoining the valve seat.
  • the inhibiting force can be adjusted by changing the ratio between the two volumes of the pressure chamber belonging to the two valve positions.
  • the fluid pressure can also be used as a return spring for returning the valve to at least one position, in particular the closed position.
  • the discharge device can have a pressure chamber connected via an outlet channel to a discharge opening, such as a nozzle, and / or at least one valve, which can be an inlet valve, an outlet valve or another valve, so that operation which can be controlled reliably is possible.
  • valve as an outlet valve can also only be hermetically sealed form a tight seal of the media or pump chamber in the area of the outlet channel. This closure is then transferred to its open position under the pump pressure, in which it is secured by clamping, detent or stop.
  • the valve design is particularly suitable for discharge devices according to DE-OS 35 32 890, to which reference is made for further details and effects.
  • the discharge device is designed in accordance with the independent claim 10 in a further development of DE-A 39 09 031, to which reference is made accordingly, it can be advantageous to use a displacement or valve body which is mechanically connected to a pump cylinder to form a separate component, which consists of a different material than the cylinder and with this, for example is connected via a fixed connector.
  • a displacement or valve body which is mechanically connected to a pump cylinder to form a separate component, which consists of a different material than the cylinder and with this, for example is connected via a fixed connector.
  • the cylinder e.g. can be formed in a simple manner as a container made of glass or a material having similar properties which would be too inelastic for the valve or displacement body.
  • the more elastic displacement body forms a self-contained structural unit with the harder glass container.
  • the discharge device 1 has a one-piece base body 2 which essentially forms its entire outer boundary and has at one end a cap-shaped housing 3 which is flat oval in longitudinal view and a connecting piece 4 projecting beyond the outside of its end wall.
  • the socket 4 is formed by an end connected to the end wall of the housing 3 outer sleeve 5 and an inner sleeve 6, which connects in one piece in the region of the free end to the outer sleeve 5, otherwise lies essentially without contact inside the outer sleeve 5 and over the inside the cap end wall protrudes into the housing 3.
  • the inner sleeve 6 carries an essentially completely inside the housing 3 or the outer sleeve 5 thrust piston pump 7, which essentially consists of one Piston 8 and a cup-shaped cylinder 9, which is closed in one piece on the bottom and which delimits an externally hermetically sealed pump chamber with the piston 8.
  • the piston 8, which rests with a plurality of sawtooth-shaped piston lips under prestress on the cylinder raceway and essentially connects directly to the associated end of the inner sleeve 6 projecting into the cylinder 9, is formed in one piece with an essentially continuously cylindrical piston shaft 10 which extends up to to the inner end of a discharge opening 11 is sufficient.
  • the discharge opening 11 is provided at the free end of the connecting piece 4 in the end wall of a nozzle cap which is formed by the transition region between the two sleeves 5, 6 and on the end wall of which the piston skirt 10 connects with its end face remote from the piston 8.
  • a channel 14 designed as a blind hole extends into the piston shaft 10, which is connected at a distance from its bottom of the blind hole via a transverse channel 16 to a channel section 15 which runs along the associated section of the piston shaft 10 between its outer circumference and the inner circumference of the inner sleeve 6 up to the swirl device runs.
  • valve seat 18 lying in a ring on an imaginary spherical surface for a preferably completely spherical valve body 17 which is spherically curved at least in its area on the outer circumference and whose ball radius is slightly larger than that of the valve seat 18 or as the radius of the channel section 14.
  • the valve body 17 is pressed through the channel section 14 until it is slightly prestressed against the valve seat 18, is supported on the jacket region of the channel section 14 opposite the valve seat 18 and is then at a distance from the bottom of the blind hole corresponding to its outer diameter.
  • a receiving chamber 19 for the valve body 17 is formed between this base and the valve body 17, which is completely sealed off from the outlet channel 12 or the channel section 14 and the transverse channel 16 by the valve body 17.
  • the control movement of the valve body is approximately the same direction as or a continuation of the assembly insertion direction without a separate securing part against falling out or a valve spring being required.
  • the resilient position catch 20 of the valve body 17 formed by the described design is overcome, which then rolls in the manner of a valve piston and / or is displaced out of the valve seat 18 and is pressed into the receiving chamber 19 according to FIG. 3.
  • the volume of the receiving chamber 19 can be chosen so large that its gas filling of the opening movement of the valve body 17 is none opposes significant resistance or the receiving chamber 19 may be provided with a suitable vent for this purpose. Essentially all of the components mentioned are expediently located in a common central axis 21.
  • the outer width of the inner sleeve 6 corresponds at least in the area of the cylinder 9 to its inner width, so that the cylinder 9 is guided on the inner sleeve 6 essentially without play or tilting.
  • the outer circumference of the inner sleeve 6 in the region of the valve 13 is supported radially on the cylinder wall via the piston skirt 10, which is sleeve-shaped in this region.
  • the piston skirt consists at least in the area of the valve body 17 or the valve seat 18 from a compression-elastic material, while the inner sleeve 6 consists of a much harder material.
  • the valve body can be rigid or resilient.
  • the end wall of the housing 3 forms an actuating handle 22 in the form of finger pressure surfaces on both sides of the connector 4.
  • two mutually opposite, approximately identical and mutually aligned cutouts 23 are provided for the simultaneous engagement of a thumb, which start from the fully open end of the housing shell 3 and through which a handle provided as a finger pressure surface on the cylinder 9 24 is accessible, which is formed by the bottom of the cylinder 9.
  • the connecting piece 4 can lie essentially completely in a removable cap 25, which extends approximately to the end wall of the housing 3 and, with the associated end, lies in a sealed manner on the outer circumference of the outer sleeve 5.
  • a further seal is advantageously provided closer to or in the area of the nozzle cap and is formed by an inner sleeve 26 which projects freely from the inside of the cap end wall and which rests with an annular bead under prestress on the outer surface of the nozzle 4.
  • the discharge opening 11 lies in a relatively small, separate cap chamber, and moreover the outer end of the otherwise non-contact cap 25 is centered exactly opposite the associated end of the nozzle 4.
  • FIG. 4 the same reference numerals are used for corresponding parts as in FIGS. 1 to 3, but with the index "a”, which is why the description applies analogously to this embodiment.
  • a valve body 17a which is located at the end of a shaft 27 and resiliently radially constrictable in the manner of a cup sleeve or annular lip is guided in the channel section 14a and forms a displacement body with the shaft 27, which at the end of the pump stroke extends the channel section 14a up to almost completely fills a narrow annular gap.
  • the shaft 27 is formed in one piece with an enlarged collar 28, which is expediently inserted with pressure from the open end into the cylinder 9a and abuts the entire surface of the cylinder.
  • the collar 28 forms the annular bottom boundary of the pump chamber opposite the piston 8a.
  • the component 30 having the displacement body can be inserted into the cylinder 9a as desired be or not, so that one and the same cylinder can optionally be equipped differently.
  • the valve body 17a forms on its end face a depression or a sleeve interior which is flared conically in the direction of movement, into which, at the end of the pump stroke, a displacement projection 31 which is adapted thereto and which projects from the blind hole bottom of the channel section 14a against the valve body 17a is immersed.
  • the transverse channel 16a is provided adjacent to the jacket of the displacement projection 31 or immediately after the bottom of the blind hole, so that the medium displaced from the valve body 17a is pressed directly into the transverse channel 16a at the end of the pump stroke in a last volume surge.
  • the bottom delimitation 29 is adapted to the spherically hollowed out end face of the pump piston 8a and to the frustoconical jacket of its foremost piston lip, so that here too a complete emptying takes place.

Landscapes

  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Pens And Brushes (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Taps Or Cocks (AREA)
  • Closures For Containers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

The dispenser for different media has a pressure chamber attached to a discharge opening (11) by an outlet duct (12), and at least one valve (13) for the liquid or gaseous or paste like medium. The valve which can be moved between a closing position and an opening position is held in at least one valve position through a detent (20) and preferably has a valve body (17) movable between the closing and opening position and held by a detent. The valve body (17) can be spherical and set displaceable in a duct section (14). A detent opening for the valve body can be provided in the duct wall.

Description

Die Erfindung betrifft eine Austragvorrichtung entsprechend den unabhängigen Ansprüchen 1 und 10 für fließfähige und ähnliche Medien, die gasförmig, flüssig, pastös, pulverförmig oder dgl. sein können.The invention relates to a discharge device according to independent claims 1 and 10 for flowable and similar media, which can be gaseous, liquid, pasty, powdered or the like.

Aus der EP-218 840 A2, aus der die im Oberbegriff von Anspruch 1 aufgeführten Merkmale bekannt sind, geht eine Austragvorrichtung hervor, bei der in einem elastisch aufweitbaren Schlauch eine Kugel festgelegt ist, die sich dort durch Klemmung hält, und bei zunehmendem Flüssigkeitsdruck durch Aufweitung des Schlauches das Ventil öffnet. Aus der EP-213 476 A2, der US-A 4 154 374, der US-A 2 574 744, der US-A 4 022 354 und der US-A 3 908 870 sind normale feder- oder gewichtsbelastete Ventile bekannt geworden, die sich entgegen dieser Kraft öffnen lassen.From EP-218 840 A2, from which the features listed in the preamble of claim 1 are known, a discharge device emerges in which a ball is fixed in an elastically expandable tube, which holds there by clamping, and with increasing fluid pressure Widening the hose opens the valve. From EP-213 476 A2, US-A 4 154 374, US-A 2 574 744, US-A 4 022 354 and US-A 3 908 870 normal spring or weight loaded valves are known which can be opened against this force.

Aus der nicht vorveröffentlichten DE-39 09 031 Al ist eine Austragvorrichtung bekannt geworden, bei der die Pumpenkammer durch einen napfförmigen Behälter gebildet ist, in dessen Mitte ein Stift angeformt ist, der mit einer Manschette in einen Auslaßkanal hineinragt.From the unpublished DE-39 09 031 A1 a discharge device has become known, in which the pump chamber is formed by a cup-shaped container, in the middle of which a pin is formed, which protrudes with a sleeve into an outlet channel.

Der Erfindung liegt die Aufgabe zugrunde, insbesondere eine hohe Stellungssicherheit bzw. einen sehr sicheren Verschluß durch das jeweilige Ventil zu erzielen.The invention is based on the object, in particular to achieve a high degree of positional security or a very secure closure by the respective valve.

Zur Lösung dieser Aufgabe ist mindestens ein Ventil in wenigstens einer Lage, insbesondere in der Schließlage, durch mindestens eine Hemmung nach Art einer Rastung oder dgl. festgelegt, so daß es z.B. im Falle einer Öffnungsstellung unverrückbar oder im Falle einer Schließlage so in dieser Stellung gehalten werden kann, daß es nur unter Aufbringung einer vorbestimmten Ausrückkraft und dann schlagartig die Hemmung überwindet, um in eine weitere Lage zu gelangen.To solve this problem, at least one valve is fixed in at least one position, in particular in the closed position, by at least one escapement in the manner of a catch or the like, so that it e.g. in the case of an open position immovable or in the case of a closed position it can be held in this position in such a way that it only overcomes the inhibition with the application of a predetermined disengagement force and then suddenly in order to get into another position.

Zweckmäßig ist die Rastung unmittelbar durch die Berührung zwischen einem Ventilkörper und einem Ventilsitz gebildet. Zur genauen und einfachen Bestimmung der Festhaltekraft ist der Ventilkörper achssymmetrisch oder zentrisch symmetrisch ausgebildet, wobei er als in sich geschlossene Baueinheit mit Vorspannung in einen Kanalabschnitt eingesetzt sein kann, der einen in seinem Mantel liegenden Ventilsitz bildet.The catch is expediently formed directly by the contact between a valve body and a valve seat. For precise and simple determination of the holding force, the valve body is designed to be axially symmetrical or centrically symmetrical, and it can be inserted as a self-contained structural unit with pretension in a channel section which forms a valve seat located in its jacket.

Die Hemmung bzw. Rastung kann auch durch ein Fluid erzeugt werden, gegen welches das Ventil bei der Überführung zwischen zwei Stellungen unter Druckveränderungen arbeitet, so daß sich eine Art Fluidfederung bzw. -dämpfung ergibt. Beispielsweise kann der Ventilkörper bei der Lageänderung eine Druckkammer verengen, die z.B. durch einen an den Ventilsitz anschließenden, gas- bzw. luftgefüllten Sacklochabschnitt gebildet ist. Durch Veränderung des Verhältnisses zwischen den beiden, den beiden Ventilstellungen zugehörigen Volumina der Druckkammer ist die Hemmkraft justierbar. Außerdem kann der Fluiddruck auch als Rückstellfeder zur Rückstellung des Ventiles in mindestens eine Lage, insbesondere die Schließlage, herangezogen werden.The inhibition or detent can also be generated by a fluid against which the valve works under pressure changes during the transfer between two positions, so that there is a kind of fluid suspension or damping. For example, when the position changes, the valve body can narrow a pressure chamber which is formed, for example, by a gas-filled or air-filled blind hole section adjoining the valve seat. The inhibiting force can be adjusted by changing the ratio between the two volumes of the pressure chamber belonging to the two valve positions. In addition, the fluid pressure can also be used as a return spring for returning the valve to at least one position, in particular the closed position.

Die Austragvorrichtung kann eine über einen Auslaßkanal an eine Austragöffnung, wie eine Düse, angeschlossene Druckkammer und/oder mindestens ein Ventil aufweisen, das ein Einlaßventil, ein Auslaßventil oder ein anderes Ventil sein kann, so daß ein zuverlässig zu steuernder Betrieb möglich ist.The discharge device can have a pressure chamber connected via an outlet channel to a discharge opening, such as a nozzle, and / or at least one valve, which can be an inlet valve, an outlet valve or another valve, so that operation which can be controlled reliably is possible.

Insbesondere im Falle der Ausbildung der Austragvorrichtung als Einweg- und/oder Einmal-Austragvorrichtung derart, daß ein gesamtes gespeichertes Medienvolumen nach einem vollen Pumphub im wesentlichen vollständig ausgetragen ist, kann das Ventil als Auslaßventil auch lediglich einen hermetisch dichten Verschluß der Medien- bzw. Pumpkammer im Bereich des Auslaßkanales bilden. Dieser Verschluß wird dann unter dem Pumpdruck in seine Öffnungslage überführt, in welcher er durch Klemmung, Rastung oder Anschlag gesichert wird. Die Ventilausbildung eignet sich insofern insbesondere für Austragvorrichtungen entsprechend der DE-OS 35 32 890, auf die wegen weiterer Einzelheiten und Wirkungen Bezug genommen wird.In particular in the case of the discharge device being designed as a one-way and / or disposable discharge device such that an entire stored media volume is discharged essentially completely after a full pump stroke, the valve as an outlet valve can also only be hermetically sealed form a tight seal of the media or pump chamber in the area of the outlet channel. This closure is then transferred to its open position under the pump pressure, in which it is secured by clamping, detent or stop. The valve design is particularly suitable for discharge devices according to DE-OS 35 32 890, to which reference is made for further details and effects.

Insbesondere wenn die Austragvorrichtung entsprechend dem unabhängigen Anspruch 10 in Weiterbildung der DE-A 39 09 031 ausgebildet ist, auf die entsprechend Bezug genommen wird, kann es vorteilhaft sein, einen Verdrängungs- bzw. Ventilkörper, der mechanisch mit einem Pumpzylinder verbunden ist, durch einen gesonderten Bauteil zu bilden, der aus einem anderen Werkstoff als der Zylinder besteht und mit diesem z.B. über ein festsitzendes Anschlußglied verbunden ist. Dadurch kann der Zylinder z.B. in einfacher Weise als Behälter aus Glas oder einem, ähnliche Eigenschaften aufweisenden Werkstoff ausgebildet werden, der für den Ventil- bzw. Verdrängungskörper zu unelastisch wäre. Der elastischere Verdrängungskörper bildet mit dem härteren Glasbehälter eine in sich geschlossene Baueinheit.In particular, if the discharge device is designed in accordance with the independent claim 10 in a further development of DE-A 39 09 031, to which reference is made accordingly, it can be advantageous to use a displacement or valve body which is mechanically connected to a pump cylinder to form a separate component, which consists of a different material than the cylinder and with this, for example is connected via a fixed connector. This enables the cylinder e.g. can be formed in a simple manner as a container made of glass or a material having similar properties which would be too inelastic for the valve or displacement body. The more elastic displacement body forms a self-contained structural unit with the harder glass container.

Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird.These and further features of preferred developments of the invention are evident from the claims and also from the description and the drawings, the individual features being implemented individually or in groups in the form of sub-combinations in one embodiment of the invention and in other areas, and can represent advantageous and protectable versions for which protection is claimed here.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher erläutert. In den Zeichnungen zeigen:

Fig. 1
eine erfindungsgemäße Austragvorrichtung im wesentlichen im Axialschnitt,
Fig. 2
die Austragvorrichtung gemäß Fig. 1 in Draufsicht bei abgenommener Verschlußkappe,
Fig. 3
einen Ausschnitt der Fig. 1 in vergrößerter Darstellung und Ventil-Offenstellung und
Fig. 4
eine weitere Ausführungsform in einer Darstellung entsprechend Fig. 3.
Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:
Fig. 1
a discharge device according to the invention essentially in axial section,
Fig. 2
1 in top view with the cap removed,
Fig. 3
a section of FIG. 1 in an enlarged view and valve open position and
Fig. 4
a further embodiment in a representation corresponding to FIG. 3.

Die Austragvorrichtung 1 gemäß den Figuren 1 bis 3 weist einen im wesentlichen ihre gesamte Außenbegrenzung bildenden, einteiligen Grundkörper 2 auf, der an einem Ende ein kappenförmiges, in Längsansicht flachovales Gehäuse 3 sowie einen über die Außenseite von dessen Stirnwand vorstehenden Stutzen 4 hat. Der Stutzen 4 ist durch eine mit einem Ende an die Stirnwand des Gehäuses 3 anschließende Außenhülse 5 und eine Innenhülse 6 gebildet, die einteilig im Bereich des freien Endes an die Außenhülse 5 anschließt, ansonsten im wesentlichen berührungsfrei innerhalb der Außenhülse 5 liegt und über die Innenseite der Kappenstirnwand in das Gehäuse 3 hineinragt.The discharge device 1 according to FIGS. 1 to 3 has a one-piece base body 2 which essentially forms its entire outer boundary and has at one end a cap-shaped housing 3 which is flat oval in longitudinal view and a connecting piece 4 projecting beyond the outside of its end wall. The socket 4 is formed by an end connected to the end wall of the housing 3 outer sleeve 5 and an inner sleeve 6, which connects in one piece in the region of the free end to the outer sleeve 5, otherwise lies essentially without contact inside the outer sleeve 5 and over the inside the cap end wall protrudes into the housing 3.

An diesem Ende trägt die Innenhülse 6 eine im wesentlichen vollständig innerhalb des Gehäuses 3 bzw. der Außenhülse 5 liegende Schubkolben-Pumpe 7, die im wesentlichen aus einem Kolben 8 und einem napfförmig am Boden einteilig geschlossenen Zylinder 9 besteht, der mit dem Kolben 8 eine nach außen hermetisch geschlossene Pumpenkammer begrenzt. Der Kolben 8, der mit mehreren, im Querschnitt sägezahnförmigen Kolbenlippen unter Vorspannung an der Zylinderlaufbahn anliegt und im wesentlichen unmittelbar an das zugehörige Ende der in den Zylinder 9 hineinragenden Innenhülse 6 anschließt, ist einteilig mit einem im wesentlichen durchgehend zylindrischen Kolbenschaft 10 ausgebildet, der bis zum inneren Ende einer Austragöffnung 11 reicht. Die Austragöffnung 11 ist am freien Ende des Stutzens 4 in der Stirnwand einer Düsenkappe vorgesehen, die durch den Übergangsbereich zwischen den beiden Hülsen 5, 6 gebildet ist und an deren Stirnwand der Kolbenschaft 10 mit seiner vom Kolben 8 abgekehrten Endfläche anschließt.At this end, the inner sleeve 6 carries an essentially completely inside the housing 3 or the outer sleeve 5 thrust piston pump 7, which essentially consists of one Piston 8 and a cup-shaped cylinder 9, which is closed in one piece on the bottom and which delimits an externally hermetically sealed pump chamber with the piston 8. The piston 8, which rests with a plurality of sawtooth-shaped piston lips under prestress on the cylinder raceway and essentially connects directly to the associated end of the inner sleeve 6 projecting into the cylinder 9, is formed in one piece with an essentially continuously cylindrical piston shaft 10 which extends up to to the inner end of a discharge opening 11 is sufficient. The discharge opening 11 is provided at the free end of the connecting piece 4 in the end wall of a nozzle cap which is formed by the transition region between the two sleeves 5, 6 and on the end wall of which the piston skirt 10 connects with its end face remote from the piston 8.

Von der Druckkammer führt durch den Kolben 8 und entlang des Außenumfanges des Kolbenschaftes 10 ein Auslaßkanal 12 in eine am Ende des Kolbenschaftes 10 liegende Dralleinrichtung und von dieser etwa radial nach innen unmittelbar in die Austragöffnung 11. Im Auslaßkanal 12, und zwar vollständig innerhalb des Kolbenschaftes 10 bzw. des Kolbens 8 und des in Ausgangsstellung stehenden Zylinders 9 sowie der Innenhülse 6 liegend, ist ein Auslaß-Ventil 13 vorgesehen, das in Ausgangsstellung einen dichten Verschluß bildet.From the pressure chamber leads through the piston 8 and along the outer circumference of the piston shaft 10, an outlet channel 12 into a swirl device located at the end of the piston shaft 10 and from there approximately radially inward directly into the discharge opening 11. In the outlet channel 12, completely within the piston shaft 10 or the piston 8 and the cylinder 9 standing in the starting position and the inner sleeve 6, an outlet valve 13 is provided which forms a tight seal in the starting position.

Von der der Pumpkammer zugehörigen Endfläche des Kolbens 8 führt ein als Sacklochbohrung ausgebildeter Kanal 14 bis in den Kolbenschaft 10, der im Abstand von seinem Sacklochboden über einen Querkanal 16 an einen Kanalabschnitt 15 angeschlossen ist, welcher entlang des zugehörigen Abschnittes des Kolbenschaftes 10 zwischen dessen Außenumfang und dem Innenumfang der Innenhülse 6 bis zur Dralleinrichtung verläuft. Das im zylindrischen Mantel des Kanalabschnittes 14 liegende, innere und in Axialansicht kreisrunde Ende des Querkanales 16 bildet einen auf einer gedachten sphärischen Fläche ringförmig liegenden Ventilsitz 18 für einen wenigstens in seinem Bereich am Außenumfang sphärisch gekrümmten, vorzugsweise vollständig kugelförmigen Ventilkörper 17, dessen Kugelradius geringfügig größer als der des Ventilsitzes 18 bzw. als der Radius des Kanalabschnittes 14 ist. Der Ventilkörper 17 ist durch den Kanalabschnitt 14 bis zur geringfügig vorgespannten Anlage am Ventilsitz 18 eingepreßt, stützt sich an dem dem Ventilsitz 18 gegenüberliegenden Mantelbereich des Kanalabschnittes 14 ab und liegt dann mit einem mindestens etwa seinem Außendurchmesser entsprechenden Abstand vom Boden der Sacklochbohrung. Dadurch ist zwischen diesem Boden und dem Ventilkörper 17 eine Aufnahmekammer 19 für den Ventilkörper 17 gebildet, die gegenüber dem Auslaßkanal 12 bzw. dem Kanalabschnitt 14 und dem Querkanal 16 durch den Ventilkörper 17 vollständig abgedichtet ist. Die Steuerbewegung des Ventilkörpers ist etwa gleichgerichtet zur bzw. eine Fortsetzung der Montage-Einsetzrichtung, ohne daß ein gesonderter Sicherungsteil gegen Herausfallen oder eine Ventilfeder erforderlich wäre.From the end face of the piston 8 associated with the pumping chamber, a channel 14 designed as a blind hole extends into the piston shaft 10, which is connected at a distance from its bottom of the blind hole via a transverse channel 16 to a channel section 15 which runs along the associated section of the piston shaft 10 between its outer circumference and the inner circumference of the inner sleeve 6 up to the swirl device runs. The inner and circular end in axial view of the channel section 14 of the transverse channel 16 forms a valve seat 18 lying in a ring on an imaginary spherical surface for a preferably completely spherical valve body 17 which is spherically curved at least in its area on the outer circumference and whose ball radius is slightly larger than that of the valve seat 18 or as the radius of the channel section 14. The valve body 17 is pressed through the channel section 14 until it is slightly prestressed against the valve seat 18, is supported on the jacket region of the channel section 14 opposite the valve seat 18 and is then at a distance from the bottom of the blind hole corresponding to its outer diameter. As a result, a receiving chamber 19 for the valve body 17 is formed between this base and the valve body 17, which is completely sealed off from the outlet channel 12 or the channel section 14 and the transverse channel 16 by the valve body 17. The control movement of the valve body is approximately the same direction as or a continuation of the assembly insertion direction without a separate securing part against falling out or a valve spring being required.

Sobald durch manuelles Verschieben des Pumpenzylinders 9 gegenüber dem Pumpkolben 8 in der Pumpkammer und dem Kanalabschnitt 14 ein ausreichend hoher Druck erzeugt ist, wird die durch die beschriebene Ausbildung gebildete, federnde Lage-Rastung 20 des Ventilkörpers 17 überwunden, der dann nach Art eines Ventilkolbens abrollend und/oder verschiebend aus dem Ventilsitz 18 heraus und gemäß Fig. 3 in die Aufnahmekammer 19 hineingedrückt wird. Das Volumen der Aufnahmekammer 19 kann so groß gewählt sein, daß ihre Gasfüllung der Öffnungsbewegung des Ventilkörpers 17 keinen nennenswerten Widerstand entgegensetzt oder die Aufnahmekammer 19 kann zu diesem Zweck mit einer geeigneten Entlüftung versehen sein. Im wesentlichen alle genannten Bauteile liegen zweckmäßig in einer gemeinsamen Mittelachse 21.As soon as a sufficiently high pressure is generated by manually moving the pump cylinder 9 relative to the pump piston 8 in the pump chamber and the channel section 14, the resilient position catch 20 of the valve body 17 formed by the described design is overcome, which then rolls in the manner of a valve piston and / or is displaced out of the valve seat 18 and is pressed into the receiving chamber 19 according to FIG. 3. The volume of the receiving chamber 19 can be chosen so large that its gas filling of the opening movement of the valve body 17 is none opposes significant resistance or the receiving chamber 19 may be provided with a suitable vent for this purpose. Essentially all of the components mentioned are expediently located in a common central axis 21.

Die Außenweite der Innenhülse 6 entspricht wenigstens im Bereich des Zylinders 9 dessen Innenweite, so daß der Zylinder 9 im wesentlichen spiel- bzw. kippfrei auf der Innenhülse 6 geführt ist. Außerdem ist dadurch der Außenumfang der Innenhülse 6 im Bereich des Ventiles 13 mittelbar über den in diesem Bereich hülsenförmigen Kolbenschaft 10 radial an der Zylinderwandung abgestützt. Der Kolbenschaft besteht wenigstens im Bereich des Ventilkörpers 17 bzw. des Ventilsitzes 18 aus druckelastisch federndem Werkstoff, während die Innenhülse 6 aus demgegenüber wesentlich härterem Werkstoff besteht. Der Ventilkörper kann formhart oder druckelastisch sein.The outer width of the inner sleeve 6 corresponds at least in the area of the cylinder 9 to its inner width, so that the cylinder 9 is guided on the inner sleeve 6 essentially without play or tilting. In addition, the outer circumference of the inner sleeve 6 in the region of the valve 13 is supported radially on the cylinder wall via the piston skirt 10, which is sleeve-shaped in this region. The piston skirt consists at least in the area of the valve body 17 or the valve seat 18 from a compression-elastic material, while the inner sleeve 6 consists of a much harder material. The valve body can be rigid or resilient.

Die Stirnwand des Gehäuses 3 bildet beiderseits des Stutzens 4 eine Betätigungs-Handhabe 22 in Form von Finger-Druckflächen. In den flacheren Wandungen des Gehäusemantels sind zwei einander gegenüberliegende, annähernd gleiche und miteinander fluchtende Ausschnitte 23 für den gleichzeitigen Eingriff eines Daumens vorgesehen, die vom auf voller Weite offenen Ende des Gehäusemantels 3 ausgehen und durch die eine als Finger-Druckfläche am Zylinder 9 vorgesehene Handhabe 24 zugänglich ist, die durch den Boden des Zylinders 9 gebildet ist. Bei der Betätigung wird der nur durch Aufstecken auf den Kolben 8 und die Innenhülse 6 befestigte und ansonsten berührungsfrei innerhalb des Grundkörpers 2 liegende Zylinder 9 in die Außenhülse 5 hineingeschoben.The end wall of the housing 3 forms an actuating handle 22 in the form of finger pressure surfaces on both sides of the connector 4. In the flatter walls of the housing shell, two mutually opposite, approximately identical and mutually aligned cutouts 23 are provided for the simultaneous engagement of a thumb, which start from the fully open end of the housing shell 3 and through which a handle provided as a finger pressure surface on the cylinder 9 24 is accessible, which is formed by the bottom of the cylinder 9. When actuated, the cylinder 9, which is fastened only by plugging onto the piston 8 and the inner sleeve 6 and is otherwise contact-free inside the base body 2, is pushed into the outer sleeve 5.

Der Stutzen 4 kann im wesentlichen vollständig in einer abziehbaren Kappe 25 liegen, die annähernd bis zur Stirnwand des Gehäuses 3 reicht und mit dem zugehörigen Ende abgedichtet am Außenumfang der Außenhülse 5 anliegt. Eine weitere Abdichtung ist vorteilhaft näher bei bzw. im Bereich der Düsenkappe vorgesehen und durch eine von der Innenseite der Kappenstirnwand frei vorstehende Innenmuffe 26 gebildet, die mit einem Ringwulst unter Vorspannung an der Außenfläche des Stutzens 4 anliegt. Dadurch liegt die Austragöffnung 11 in einer verhältnismäßig kleinen, gesonderten Kappenkammer, und außerdem ist das äußere Ende der ansonsten berührungsfreien Kappe 25 genau gegenüber dem zugehörigen Ende des Stutzens 4 zentriert.The connecting piece 4 can lie essentially completely in a removable cap 25, which extends approximately to the end wall of the housing 3 and, with the associated end, lies in a sealed manner on the outer circumference of the outer sleeve 5. A further seal is advantageously provided closer to or in the area of the nozzle cap and is formed by an inner sleeve 26 which projects freely from the inside of the cap end wall and which rests with an annular bead under prestress on the outer surface of the nozzle 4. As a result, the discharge opening 11 lies in a relatively small, separate cap chamber, and moreover the outer end of the otherwise non-contact cap 25 is centered exactly opposite the associated end of the nozzle 4.

In Fig. 4 sind für einander entsprechende Teile die gleichen Bezugszeichen wie in den Figuren 1 bis 3, jedoch mit dem Index "a" verwendet, weshalb die Beschreibung sinngemäß für diese Ausführungsform gilt. In dem Kanalabschnitt 14a ist bereits ab der Ausgangsstellung ein am Ende eines Schaftes 27 liegender, nach Art einer Napfhülse bzw. Ringlippe elastisch radial verengbarer Ventilkörper 17a geführt, der mit dem Schaft 27 einen Verdrängungskörper bildet, welcher am Ende des Pumphubes den Kanalabschnitt 14a bis auf einen schmalen Ringspalt annähernd vollständig ausfüllt.In FIG. 4, the same reference numerals are used for corresponding parts as in FIGS. 1 to 3, but with the index "a", which is why the description applies analogously to this embodiment. In the channel section 14a, a valve body 17a which is located at the end of a shaft 27 and resiliently radially constrictable in the manner of a cup sleeve or annular lip is guided in the channel section 14a and forms a displacement body with the shaft 27, which at the end of the pump stroke extends the channel section 14a up to almost completely fills a narrow annular gap.

Der Schaft 27 ist an seinem vom Ventilkörper 17a abgekehrten Ende einteilig mit einem erweiterten Bund 28 ausgebildet, welcher zweckmäßig mit Pressung vom offenen Ende her in den Zylinder 9a eingesetzt ist und annähernd ganzflächig an dessen Boden anliegt. Dadurch bildet der Bund 28 die dem Kolben 8a gegenüberliegende, ringförmige Bodenbegrenzung der Pumpkammer. Der den Verdrängungskörper aufweisende Bauteil 30 kann beliebig in den Zylinder 9a eingesetzt werden oder nicht, so daß ein und derselbe Zylinder wahlweise unterschiedlich ausgerüstet werden kann. Der Ventilkörper 17a bildet an seiner Endfläche eine Vertiefung bzw. einen in Bewegungsrichtung konisch erweiterten Hülseninnenraum, in welchen am Ende des Pumphubes ein daran angepaßter Verdrängungsansatz 31 eintaucht, der vom Sacklochboden des Kanalabschnittes 14a gegen den Ventilkörper 17a vorsteht.At its end remote from the valve body 17a, the shaft 27 is formed in one piece with an enlarged collar 28, which is expediently inserted with pressure from the open end into the cylinder 9a and abuts the entire surface of the cylinder. As a result, the collar 28 forms the annular bottom boundary of the pump chamber opposite the piston 8a. The component 30 having the displacement body can be inserted into the cylinder 9a as desired be or not, so that one and the same cylinder can optionally be equipped differently. The valve body 17a forms on its end face a depression or a sleeve interior which is flared conically in the direction of movement, into which, at the end of the pump stroke, a displacement projection 31 which is adapted thereto and which projects from the blind hole bottom of the channel section 14a against the valve body 17a is immersed.

Benachbart zum Mantel des Verdrängungsansatzes 31 bzw. unmittelbar anschließend an den Sacklochboden ist der Querkanal 16a vorgesehen, so daß das aus dem Ventilkörper 17a verdrängte Medium am Ende des Pumphubes in einem letzten Volumenstoß unmittelbar in den Querkanal 16a gedrückt wird. Die Bodenbegrenzung 29 ist an die sphärisch aushöhlte zugehörige Stirnfläche des Pumpkolbens 8a sowie an den kegelstumpfförmigen Mantel von dessen vorderster Kolbenlippe angepaßt, so daß auch hier eine vollständige Entleerung erfolgt.The transverse channel 16a is provided adjacent to the jacket of the displacement projection 31 or immediately after the bottom of the blind hole, so that the medium displaced from the valve body 17a is pressed directly into the transverse channel 16a at the end of the pump stroke in a last volume surge. The bottom delimitation 29 is adapted to the spherically hollowed out end face of the pump piston 8a and to the frustoconical jacket of its foremost piston lip, so that here too a complete emptying takes place.

Claims (13)

  1. Dispenser for media having at least one valve (13) containing a valve body (17) and a valve seat, in which the valve body can be transferred between a closed position and an open position and is held in at least one valve position by self-securing, characterized in that, in at least one of these valve positions, the valve body (17) is secured against transfer into another valve position by catch means (20).
  2. Dispenser according to claim 1, wherein the catch means (20) are resilient catch means and/or act directly on one of the valve parts.
  3. Dispenser according to claim 1 or 2, wherein the valve body (17) is held in the closed position by catch means (20).
  4. Dispenser according to one of the preceding claims, wherein of the two valve parts, one is a substantially spherical valve body (17), which is constructed for locking engagement and is displaceably mounted in a channel portion (14) of the other valve part and in the channel wall there is at least one locking opening for the valve body (17).
  5. Dispenser according to one of the preceding claims, characterized in that the catch means (20) are formed by the valve seat (18) for the valve body (17), particularly by the radially inner end of a transverse channel (16), which preferably connects a channel portion (14) receiving the valve body (17) to a channel portion (15) laterally displaced with respect thereto.
  6. Dispenser according to one of the preceding claims, characterized in that the valve body (17) is displaceable as a function of the medium pressure from the closed position and in the manner of a piston subject to medium pressure is placed in a channel portion (14) for the medium, which is in particular constructed as a blind bore.
  7. Dispenser according to one of the preceding claims, characterized in that the control force for changing the position of the valve body (17) is adjustable through the choice of the size of a pressure chamber (19), into which the valve body (17) can be moved.
  8. Dispenser according to one of the preceding claims, characterized in that the valve (13) is constructed as an outlet valve and the valve body (17) is located in a piston shaft (10) of a thrust piston pump (7), the piston shaft (10) preferably being transversed up to the front end by the channel portion (14) receiving the valve body (17) and open to the pump chamber.
  9. Dispenser according to claim 8, characterized in that, in the vicinity of the valve (13), the piston shaft (10) is surrounded by a neck (6), which preferably bounds the transverse channel (16) at the outer end and/or the laterally displaced channel portion (15) connected thereto with its inner circumference and is in particular guided in the cylinder (9) of the pump (7).
  10. Dispenser with a pressure chamber and a valve or displacement (17a) engaging in displaceable manner in a channel portion (14a) of an outlet channel (12a), in which the valve or displacement body (17a) is formed by a component (30) separate from the pressure chamber and which is fixed in the latter.
  11. Dispenser according to claim 10, characterized in that the component (30) has a widened collar (28) forming a bottom boundary (29) of the pressure chamber (9a) and from which projects freely the rod-like valve or displacement body (17a).
  12. Dispenser according to claim 10 or 11, characterized in that the component (30) is attached to a closed bottom wall of a cylinder body (9a) forming the pressure chamber and that preferably a ring face of the collar (28) facing the pump piston (8a) has its shape adapted to a front face of the pump piston (8a) displaceably receiving the valve or displacement body (17a).
  13. Dispenser according to one of the claims 10 to 12, characterized in that the valve or displacement body (17a) is made substantially circular through a depression in its face and into said depression is adapted a displacement shoulder (31) located at the end of the channel portion (14a) and which substantially completely fills the depression in the pump stroke end position.
EP91902680A 1990-02-22 1990-12-21 Dispenser for media Expired - Lifetime EP0516636B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4005528 1990-02-22
DE4005528A DE4005528C2 (en) 1990-02-22 1990-02-22 Discharge device for media
PCT/EP1990/002280 WO1991013281A1 (en) 1990-02-22 1990-12-21 Dispenser for media

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EP0516636A1 EP0516636A1 (en) 1992-12-09
EP0516636B1 true EP0516636B1 (en) 1994-09-14

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US (1) US5368201A (en)
EP (1) EP0516636B1 (en)
AT (1) ATE111577T1 (en)
AU (1) AU7064591A (en)
DE (2) DE4005528C2 (en)
ES (1) ES2060361T3 (en)
WO (1) WO1991013281A1 (en)

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WO2002074336A2 (en) 2001-02-23 2002-09-26 Glaxosmithkline Biologicals S.A. Influenza vaccine formulations for intradermal delivery
EP2269639A2 (en) 2001-02-23 2011-01-05 GlaxoSmithKline Biologicals s.a. Influenza vaccine formulations for intradermal delivery
EP2281573A2 (en) 2001-02-23 2011-02-09 GlaxoSmithKline Biologicals s.a. Influenza vaccine formulations for intradermal delivery

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WO1991013281A1 (en) 1991-09-05
DE4005528A1 (en) 1991-08-29
ES2060361T3 (en) 1994-11-16
AU7064591A (en) 1991-09-18
DE59007175D1 (en) 1994-10-20
US5368201A (en) 1994-11-29
ATE111577T1 (en) 1994-09-15
DE4005528C2 (en) 1998-01-15
EP0516636A1 (en) 1992-12-09

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