EP2210674A2 - Application device - Google Patents

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Publication number
EP2210674A2
EP2210674A2 EP09015671A EP09015671A EP2210674A2 EP 2210674 A2 EP2210674 A2 EP 2210674A2 EP 09015671 A EP09015671 A EP 09015671A EP 09015671 A EP09015671 A EP 09015671A EP 2210674 A2 EP2210674 A2 EP 2210674A2
Authority
EP
European Patent Office
Prior art keywords
cap
housing
opening
discharge device
inlet
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
EP09015671A
Other languages
German (de)
French (fr)
Other versions
EP2210674B1 (en
EP2210674A3 (en
Inventor
Peter Stadelhofer
Jürgen Greiner-Perth
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
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 Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP2210674A2 publication Critical patent/EP2210674A2/en
Publication of EP2210674A3 publication Critical patent/EP2210674A3/en
Application granted granted Critical
Publication of EP2210674B1 publication Critical patent/EP2210674B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B05B11/0032—Manually actuated means located downstream the discharge nozzle for closing or covering it, e.g. shutters
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element (take precedence)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1064—Pump inlet and outlet valve elements integrally formed of a deformable material

Definitions

  • the invention relates to a discharge device for liquid media with a housing, a media storage, an outlet opening for discharging the medium and an inlet opening for the inlet of air for the purpose of volume compensation in the media storage.
  • a generic discharge device has a cap which can be placed on the housing and protects the outlet opening in the attached state.
  • Generic discharge devices are known from the prior art. With them, it is provided that medium is discharged from a medium reservoir by means of a pumping device or another conveying device through the outlet opening to an environment. This is used in particular for the discharge of pharmaceuticals and cosmetics.
  • the discharge process reduces the amount of media in the media store.
  • generic discharge devices In order to prevent this from forming a negative pressure in the media reservoir, which hinders further discharge processes, generic discharge devices have an inlet opening, through which air flows into the discharge device and get into the media storage, where it remains as a replacement for the discharged media amount and leads to a pressure equalization.
  • the problem is that the inlet opening and the connection of the inlet opening with the media storage allow escape of the medium in gaseous form. Therefore, when the discharge device is stored for a long time, a relevant amount of the medium can escape through the inlet port. This is not only a problem because of the loss of the medium per se, it also leads to the fact that the drug concentration of the remaining medium in the media storage changes, so that the intended intended dosage during discharge is no longer guaranteed.
  • the object of the invention is therefore to provide a discharge device, by which the disadvantages of the prior art are reduced.
  • the cap of the transmitter for example a dispenser for ophthalmic applications, is thus designed in the design according to the invention not only to protect the outlet opening, for example from contact with contaminated surfaces, but at the same time to protect the inlet opening and at the same time to make the inlet opening gas-tight towards the environment as well as opposite the outlet closes.
  • the inlet opening gas-tight against the environment sealed.
  • gas-tight encapsulation of the inlet opening takes place additionally with respect to the outlet opening, it is possible to design the cap so as to provide a gas-open connection between the outlet opening and the surroundings for the purpose of drying, but at the same time make the inlet opening gas-tight with respect to the surroundings remains completed.
  • the inlet opening may be formed as serving only for the purpose of air inlet opening in the housing. It is particularly advantageous, however, if the inlet opening is provided in the region of an actuating handle movable relative to the housing. It is particularly preferred that the inlet opening is formed as an inlet gap between the actuating handle on the one hand and the housing on the other. With such a design, therefore, the actuating handle itself is also covered by the cap, so that it is also ensured that an actuation of the discharge device is not possible when the protective cap is attached.
  • the cap for closing the inlet opening with respect to the environment may be formed such that it has a surface portion which rests in the mounted state of the cap circumferentially at the edges of the inlet opening and covers the inlet opening. As a result, the inlet opening is therefore immediately closed.
  • the cap is formed such that it defines in the mounted state together with the housing a sealed relative to the environment gas-tight space, the inlet opening opens into this closed space.
  • the cap does not immediately close the inlet opening, but connecting them to an outwardly sealed space between the inside of the cap and housing does not require a very accurate positioning of the cap to ensure the sealing of the inlet opening.
  • the cap abutting the housing directly in the region of the inlet opening, it lies according to this development at a distance from the inlet opening in the region of a contact track on the housing. This makes it possible to provide larger areas on the housing and on the cap, where the housing and the cap are in sealing contact with each other.
  • the contact track, along which the cap rests against the housing, can, for example, approximately circularly surround the inlet opening at a distance of, for example, 5 mm to 10 mm.
  • the contact track along which the contact between the cap and the housing consists, is preferably provided in the region of a relative to the Aufsteckides the cap substantially cylindrical portion of the cap and the housing.
  • a region which is tapered or widening at an angle of less than 10 ° is also considered to be a largely cylindrical region.
  • the cap rests in the mounted state along two circumferential contact tracks on the housing, wherein the closed space is provided between the two contact coils.
  • the housing and the cap are matched to one another in such a way that, when the cap is put on, a contact between the cap and the housing takes place approximately simultaneously in the region of the first contact track and in the region of the second contact track.
  • These two contact traces caused by the contact between cap and housing are formed, each surrounding the housing and thus define a sealed against the environment annular space.
  • the contact tracks preferably each run in a plane whose normal vectors are aligned parallel to the direction of insertion of the cap. Also in the design with two contact tracks, it is considered advantageous if at least one of the contact tracks is provided in a substantially cylindrical region of the housing and the cap.
  • the cap can be slid in relation to the Aufschiebecardi in any angular position on the housing, since it is ensured due to the circumferential annular space that the inlet opening opens independently of the angular position in the annulus.
  • the cap of a discharge device protects the outlet opening at least against mechanical damage. It is shaped so that a contact contact of the outlet opening with surfaces in the vicinity of the discharge device is effectively prevented when the cap is attached.
  • the cap can be designed so that the outlet opening is sealed gas-tight relative to the environment.
  • the cap is preferably designed such that it allows an air flow to the outlet opening in the mounted state.
  • the cap has at least one ventilation opening, via which the outlet opening is connected to the environment.
  • Fig. 1 and Fig. 2 shows a discharge device according to the invention in a use state in which a cap of the discharge has been removed.
  • the discharge device 8 has a media reservoir 12, which is connected via a channel 14 and an inlet valve 16 with a pumping chamber 18.
  • an outlet channel 20 connects, which opens into an outlet chamber 22.
  • an outlet opening 26 which in the state of Fig. 1 is closed by a pressure-controlled outlet valve 24 within the housing 10 of the discharge device 8.
  • an actuating handle 30 is provided, which is movable in the radial direction of the discharge and can be used by a force application to reduce the volume of the pumping chamber 18 and thereby to push the medium from the pumping chamber 18 into the outlet channel 20. This in turn leads to an increase in pressure in the outlet chamber 22, whereby the outlet valve 24 is opened and permits a discharge of the medium through the outlet opening 26 therethrough.
  • the path of the medium from the pumping chamber 18 to the outlet opening 26 is in Fig. 1 illustrated by the dotted arrow 2.
  • the actuating handle 30 After the discharge operation, the actuating handle 30 returns to its initial state, whereby the volume in the pumping chamber 18 increases again. Since the outlet valve 24 is closed again at this time, this increase in volume leads to a suction of the medium from the media reservoir 12 through the channel 14 and the inlet valve 16 therethrough.
  • the dotted arrow 4 in Fig. 1 the way of the medium from the media memory 12 in the pumping chamber 18 is illustrated.
  • a negative pressure in the media storage 12.
  • air from the environment is sucked into the media storage 12. This air can penetrate through a gap 32 between the housing 10 and the actuating button 30 in the housing 10 and from there pass through a filter unit 34 into the media storage 12.
  • the way that takes the air from the environment into the media storage 12 is illustrated by the dashed arrow 6.
  • cap 60 is provided.
  • the cap 60 has a lower substantially cylindrical portion 62 and an adjoining upper conical portion 64 on. In the region of the conical section 64 ventilation openings 66 are provided.
  • the cap 60 may be in the in Fig. 4 clarified manner on the discharge 8 of the Fig. 1 and 2 be deferred.
  • the shape of the cap 60 is adapted to the shape of the housing 10 such that in the region of two, in particular in Fig. 2 shown circumferential contact traces 70, 72, the cap 60 comes to rest on the housing 10. Between the contact tracks 70 and 72, the housing 10 and the cylindrical portion 62 of the cap 60 are spaced from each other and together define a gap 80, which is sealed by the contact tracks 70, 72 from the environment gas-tight.
  • the contact tracks 70, 72 are provided in the region of approximately cylindrical portions of the cap 60 and the housing 10. This ensures that the cap 60, even if at one of the two contact tracks 70, 72 already circulating contact between the cap 60 and the housing 11 is given, yet the cap 60 are further pushed onto the housing 10 without a significantly increased effort can, so that also on the second contact lane a circumferential contact is achieved.
  • the outlet opening 26 is sufficiently protected due to the outlet valve 24 against evaporation of the medium.
  • the ventilation openings 66 already described are provided in the conical section 64 of the cap 60. They allow an exchange of air and thus a quick drying of the outlet opening 26. Due to the contact track 70, however, this design with ventilation openings 66 is not accompanied by a loss of the gas-tight design of the inlet opening 32.

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

Abstract

The discharge device (8) has a housing (10), a media storage (12) and an outlet opening (26) for discharging a liquid media. An inlet opening (32) is provided for intake of air to balance the volume in the media storage. A cap (60) is mounted on the housing, where the cap seals the inlet opening and the outlet against the environment in an air tight manner.

Description

Die Erfindung betrifft eine Austragvorrichtung für flüssige Medien mit einem Gehäuse, einem Medienspeicher, einer Auslassöffnung zum Austrag des Mediums und einer Einlassöffnung zum Einlass von Luft zum Zwecke des Volumenausgleichs im Medienspeicher. Dabei weist eine gattungsgemäße Austragvorrichtung eine Kappe auf, die auf das Gehäuse aufsetzbar ist und die im aufgesetzten Zustand die Auslassöffnung schützt.The invention relates to a discharge device for liquid media with a housing, a media storage, an outlet opening for discharging the medium and an inlet opening for the inlet of air for the purpose of volume compensation in the media storage. In this case, a generic discharge device has a cap which can be placed on the housing and protects the outlet opening in the attached state.

Gattungsgemäße Austragvorrichtungen sind aus dem Stand der Technik bekannt. Bei ihnen ist vorgesehen, dass aus einem Medienspeicher Medium mittels einer Pumpvorrichtung oder einer anderweitigen Fördervorrichtung durch die Auslassöffnung hindurch an eine Umgebung abgegeben wird. Dies dient insbesondere dem Austrag von Pharmazeutika und Kosmetika. Durch den Austragvorgang wird die Menge des Mediums im Medienspeicher verringert. Um zu verhindern, dass sich hierdurch im Medienspeicher ein Unterdruck bildet, der bei weiteren Austragvorgängen hinderlich ist, weisen gattungsgemäße Austragvorrichtungen eine Einlassöffnung auf, durch die Luft in die Austragvorrichtung einströmen und in den Medienspeicher gelangen kann, wo sie als Ersatz für die ausgetragene Medienmenge verbleibt und zu einem Druckausgleich führt.Generic discharge devices are known from the prior art. With them, it is provided that medium is discharged from a medium reservoir by means of a pumping device or another conveying device through the outlet opening to an environment. This is used in particular for the discharge of pharmaceuticals and cosmetics. The discharge process reduces the amount of media in the media store. In order to prevent this from forming a negative pressure in the media reservoir, which hinders further discharge processes, generic discharge devices have an inlet opening, through which air flows into the discharge device and get into the media storage, where it remains as a replacement for the discharged media amount and leads to a pressure equalization.

Problematisch ist dabei, dass die Einlassöffnung und die Verbindung der Einlassöffnung mit dem Medienspeicher ein Entweichen des Mediums in gasförmiger Form gestatten. Wenn die Austragvorrichtung daher für längere Zeit gelagert wird, kann eine relevante Menge des Mediums durch die Einlassöffnung entweichen. Dies stellt nicht nur wegen des Verlustes des Mediums an sich ein Problem dar, es führt zusätzlich auch dazu, dass die Wirkstoffkonzentration des im Medienspeicher verbleibenden Mediums sich verändert, so dass die bestimmungsgemäß vorgesehene Dosierung beim Austrag nicht mehr gewährleistet ist.The problem is that the inlet opening and the connection of the inlet opening with the media storage allow escape of the medium in gaseous form. Therefore, when the discharge device is stored for a long time, a relevant amount of the medium can escape through the inlet port. This is not only a problem because of the loss of the medium per se, it also leads to the fact that the drug concentration of the remaining medium in the media storage changes, so that the intended intended dosage during discharge is no longer guaranteed.

Aufgabe und LösungTask and solution

Aufgabe der Erfindung ist es daher, eine Austragvorrichtung zur Verfügung zu stellen, durch die die Nachteile des Standes der Technik vermindert werden.The object of the invention is therefore to provide a discharge device, by which the disadvantages of the prior art are reduced.

Erfindungsgemäß wird dies dadurch erreicht, dass die Kappe die Einlassöffnung gegenüber einer Umgebung einerseits und gegenüber der Auslassöffnung andererseits gasdicht verschließt.According to the invention, this is achieved in that the cap seals the inlet opening in a gastight manner against an environment on the one hand and with respect to the outlet opening on the other hand.

Die Kappe des Senders, beispielsweise eines Spenders für ophthalmische Anwendungen, ist bei der erfindungsgemäßen Gestaltung demnach so ausgebildet, dass sie nicht nur die Auslassöffnung schützt, beispielsweise vor Kontakt mit kontaminierten Oberflächen, sondern gleichzeitig auch einen Schutz der Einlassöffnung gewährleistet und dabei die Einlassöffnung sowohl gasdicht gegenüber der Umgebung als auch gegenüber der Auslassöffnung abschließt.The cap of the transmitter, for example a dispenser for ophthalmic applications, is thus designed in the design according to the invention not only to protect the outlet opening, for example from contact with contaminated surfaces, but at the same time to protect the inlet opening and at the same time to make the inlet opening gas-tight towards the environment as well as opposite the outlet closes.

Bei aufgesetzter Kappe wird demnach zum Einen die Einlassöffnung gasdicht gegenüber der Umgebung verschlossen. Dadurch, dass zusätzlich auch gegenüber der Auslassöffnung eine gasdichte Kapselung der Einlassöffnung erfolgt, ist es möglich, die Kappe so zu gestalten, dass eine gasoffene Verbindung zwischen der Auslassöffnung und der Umgebung zum Zwecke des Trocknens bereitstellt wird, gleichzeitig jedoch die Einlassöffnung gasdicht gegenüber der Umgebung abgeschlossen bleibt.When the cap is placed on the one hand, the inlet opening gas-tight against the environment sealed. By virtue of the fact that gas-tight encapsulation of the inlet opening takes place additionally with respect to the outlet opening, it is possible to design the cap so as to provide a gas-open connection between the outlet opening and the surroundings for the purpose of drying, but at the same time make the inlet opening gas-tight with respect to the surroundings remains completed.

Die Einlassöffnung kann als nur dem Zwecke des Lufteinlasses dienende Durchbrechung im Gehäuse ausgebildet sein. Besonders von Vorteil ist es jedoch, wenn die Einlassöffnung im Bereich einer gegenüber dem Gehäuse bewegbaren Betätigungshandhabe vorgesehen ist. Dabei ist es besonders bevorzugt, dass die Einlassöffnung als Einlassspalt zwischen der Betätigungshandhabe einerseits und dem Gehäuse andererseits ausgebildet ist. Bei einer solchen Gestaltung wird demnach durch die Kappe auch die Betätigungshandhabe selbst überdeckt, so dass auch gewährleistet ist, dass eine Betätigung der Austragvorrichtung bei aufgesetzter Schutzkappe nicht möglich ist.The inlet opening may be formed as serving only for the purpose of air inlet opening in the housing. It is particularly advantageous, however, if the inlet opening is provided in the region of an actuating handle movable relative to the housing. It is particularly preferred that the inlet opening is formed as an inlet gap between the actuating handle on the one hand and the housing on the other. With such a design, therefore, the actuating handle itself is also covered by the cap, so that it is also ensured that an actuation of the discharge device is not possible when the protective cap is attached.

Im einfachsten Falle kann die Kappe zum Verschließen der Einlassöffnung gegenüber der Umgebung derart ausgebildet sein, dass sie einen Flächenabschnitt aufweist, der im aufgesetzten Zustand der Kappe umlaufend an den Rändern der Einlassöffnung anliegt und die Einlassöffnung überdeckt. Hierdurch wird die Einlassöffnung demnach unmittelbar verschlossen.In the simplest case, the cap for closing the inlet opening with respect to the environment may be formed such that it has a surface portion which rests in the mounted state of the cap circumferentially at the edges of the inlet opening and covers the inlet opening. As a result, the inlet opening is therefore immediately closed.

Alternativ hierzu ist die Kappe derart ausgebildet, dass sie im aufgesetzten Zustand gemeinsam mit dem Gehäuse einen gegenüber der Umgebung gasdicht abgeschlossenen Raum begrenzt, wobei die Einlassöffnung in diesen abgeschlossenen Raum mündet. Eine solche Gestaltung, bei der die Kappe die Einlassöffnung nicht unmittelbar abschließt, sondern sie mit einem nach außen abgeschlossenen Raum zwischen Innenseite der Kappe und Gehäuse verbindet, bedarf keiner sehr genauen Positionierung der Kappe, um die Abdichtung der Einlassöffnung zu gewährleisten. Statt dass die Kappe unmittelbar im Bereich der Einlassöffnung am Gehäuse anliegt, liegt sie gemäß dieser Weiterbildung beabstandet von der Einlassöffnung im Bereich einer Kontaktspur am Gehäuse an. Dies ermöglicht es, größere Bereiche am Gehäuse und an der Kappe vorzusehen, an denen das Gehäuse und die Kappe im abdichtenden Berührkontakt sind. Daher ist auch bei einer wenig sorgfältig aufgesetzten Kappe die gewünschte Abdichtung der Einlassöffnung gewährleistet. Die Kontaktspur, entlang derer die Kappe am Gehäuse anliegt, kann beispielsweise etwa kreisförmig die Einlassöffnung im Abstand von beispielsweise 5 mm bis 10 mm umgeben.Alternatively, the cap is formed such that it defines in the mounted state together with the housing a sealed relative to the environment gas-tight space, the inlet opening opens into this closed space. Such a configuration in which the cap does not immediately close the inlet opening, but connecting them to an outwardly sealed space between the inside of the cap and housing does not require a very accurate positioning of the cap to ensure the sealing of the inlet opening. Instead of the cap abutting the housing directly in the region of the inlet opening, it lies according to this development at a distance from the inlet opening in the region of a contact track on the housing. This makes it possible to provide larger areas on the housing and on the cap, where the housing and the cap are in sealing contact with each other. Therefore, the desired sealing of the inlet opening is ensured even with a little carefully placed cap. The contact track, along which the cap rests against the housing, can, for example, approximately circularly surround the inlet opening at a distance of, for example, 5 mm to 10 mm.

Vorzugsweise ist die Kontaktspur, entlang derer Berührkontakt zwischen der Kappe und dem Gehäuse besteht, vorzugsweise im Bereich eines bezogen auf die Aufsteckrichtung der Kappe weitgehend zylindrischen Bereichs der Kappe und des Gehäuses vorgesehen. Unter einem weitgehend zylindrischen Bereich wird dabei auch ein sich mit einem Winkel kleiner 10° verjüngender oder aufweitender Bereich angesehen. Durch diese weitgehend zylindrische Gestaltung im Bereich der Kontaktspur wird erreicht, dass auch bei nicht weit genug oder zu weit aufgesteckter Kappe die Abdichtung erzielt wird.Preferably, the contact track, along which the contact between the cap and the housing consists, is preferably provided in the region of a relative to the Aufsteckrichtung the cap substantially cylindrical portion of the cap and the housing. In this case, a region which is tapered or widening at an angle of less than 10 ° is also considered to be a largely cylindrical region. By this largely cylindrical design in the contact track is achieved that even if not far enough or too far plugged cap the seal is achieved.

Insbesondere von Vorteil ist es, wenn die Kappe im aufgesetzten Zustand entlang zweier umlaufender Kontaktspuren am Gehäuse anliegt, wobei der abgeschlossene Raum zwischen den beiden Kontaktspulen vorgesehen ist. Bei einer solchen Gestaltung sind das Gehäuse und die Kappe derartig aufeinander abgestimmt, dass beim Aufsetzen der Kappe in etwa gleichzeitig ein Kontakt zwischen Kappe und Gehäuse im Bereich der ersten und im Bereich der zweiten Kontaktspur erfolgt. Diese beiden Kontaktspuren, die durch den Berührkontakt zwischen Kappe und Gehäuse gebildet werden, umgeben jeweils das Gehäuse und definieren somit einen gegenüber der Umgebung abgeschlossenen Ringraum. Die Kontaktspuren verlaufen jeweils vorzugsweise in einer Ebene, deren Normalenvektoren parallel zur Aufschieberichtung der Kappe ausgerichtet sind. Auch bei der Gestaltung mit zwei Kontaktspuren wird es als vorteilhaft angesehen, wenn zumindest eine der Kontaktspuren in einem weitgehend zylindrischen Bereich des Gehäuses und der Kappe vorgesehen ist.In particular, it is advantageous if the cap rests in the mounted state along two circumferential contact tracks on the housing, wherein the closed space is provided between the two contact coils. With such a design, the housing and the cap are matched to one another in such a way that, when the cap is put on, a contact between the cap and the housing takes place approximately simultaneously in the region of the first contact track and in the region of the second contact track. These two contact traces caused by the contact between cap and housing are formed, each surrounding the housing and thus define a sealed against the environment annular space. The contact tracks preferably each run in a plane whose normal vectors are aligned parallel to the direction of insertion of the cap. Also in the design with two contact tracks, it is considered advantageous if at least one of the contact tracks is provided in a substantially cylindrical region of the housing and the cap.

Bei dieser Weiterbildung mit zwei Kontaktspuren kann die Kappe bezogen auf die Aufschieberichtung auch in beliebiger Winkelstellung auf das Gehäuse aufgeschoben werden, da aufgrund des umlaufenden Ringraums gewährleistet ist, dass die Einlassöffnung unabhängig von der Winkelstellung in den Ringraum mündet.In this development with two contact tracks, the cap can be slid in relation to the Aufschieberichtung in any angular position on the housing, since it is ensured due to the circumferential annular space that the inlet opening opens independently of the angular position in the annulus.

Die Kappe einer erfindungsgemäßen Austragvorrichtung schützt die Auslassöffnung zumindest gegen eine mechanische Beschädigung. Sie ist so geformt, dass ein Berührkontakt der Auslassöffnung mit Oberflächen in der Umgebung der Austragvorrichtung bei aufgesetzter Kappe wirksam verhindert wird. Die Kappe kann so ausgebildet sein, dass auch die Auslassöffnung gasdicht gegenüber der Umgebung abgeschlossen ist. Um eine Trocknung der Auslassöffnung nach einem Austragvorgang zu ermöglichen, ist die Kappe jedoch vorzugsweise derart ausgebildet, dass sie einen Luftstrom zur Auslassöffnung auch im aufgesetzten Zustand zulässt. Hierfür ist es vorzugsweise vorgesehen, dass die Kappe zumindest eine Belüftungsöffnung aufweist, über die die Auslassöffnung mit der Umgebung verbunden ist.The cap of a discharge device according to the invention protects the outlet opening at least against mechanical damage. It is shaped so that a contact contact of the outlet opening with surfaces in the vicinity of the discharge device is effectively prevented when the cap is attached. The cap can be designed so that the outlet opening is sealed gas-tight relative to the environment. In order to allow drying of the outlet opening after a discharge operation, however, the cap is preferably designed such that it allows an air flow to the outlet opening in the mounted state. For this purpose, it is preferably provided that the cap has at least one ventilation opening, via which the outlet opening is connected to the environment.

Kurzbeschreibung der ZeichnungenBrief description of the drawings

Weitere Aspekte und Vorteile der Erfindung ergeben sich außer aus den Ansprüchen auch aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung, welches anhand der Figuren näher erläutert wird. Dabei zeigen:

Fig. 1
eine Ausgestaltung einer erfindungsgemäßen Austragvorrichtung in einer geschnittenen Ansicht bei nicht aufgesetzter Kappe,
Fig. 2
die Austragvorrichtung der Fig. 1 in einer perspektivischen Ansicht,
Fig. 3
eine Kappe, die für die Austragvorrichtung der Fig. 1 und 2 vorgesehen ist und
Fig. 4
die Austragvorrichtung der Fig. 1 und 2 mit aufgesetzter Kappe.
Other aspects and advantages of the invention will become apparent from the claims and from the following description of a preferred Embodiment of the invention, which will be explained in more detail with reference to FIGS. Showing:
Fig. 1
An embodiment of a discharge device according to the invention in a sectional view with not attached cap,
Fig. 2
the discharge of the Fig. 1 in a perspective view,
Fig. 3
a cap for the discharge of the Fig. 1 and 2 is provided and
Fig. 4
the discharge of the Fig. 1 and 2 with attached cap.

Detaillierte Beschreibung des AusführungsbeispielsDetailed description of the embodiment

Fig. 1 und Fig. 2 zeigt eine erfindungsgemäße Austragvorrichtung in einem Benutzungszustand, in dem eine Kappe der Austragvorrichtung entfernt wurde. Die Austragvorrichtung 8 weist einen Medienspeicher 12 auf, der über einen Kanal 14 und ein Einlassventil 16 mit einer Pumpkammer 18 verbunden ist. An der Auslassseite der Pumpkammer 18 schließt sich ein Auslasskanal 20 an, der in eine Auslasskammer 22 mündet. An dieser Auslasskammer 22 schließt sich eine Auslassöffnung 26 an, die in dem Zustand der Fig. 1 durch ein druckgesteuertes Auslassventil 24 innerhalb des Gehäuses 10 der Austragvorrichtung 8 verschlossen ist. Fig. 1 and Fig. 2 shows a discharge device according to the invention in a use state in which a cap of the discharge has been removed. The discharge device 8 has a media reservoir 12, which is connected via a channel 14 and an inlet valve 16 with a pumping chamber 18. On the outlet side of the pumping chamber 18, an outlet channel 20 connects, which opens into an outlet chamber 22. At this outlet chamber 22 is followed by an outlet opening 26, which in the state of Fig. 1 is closed by a pressure-controlled outlet valve 24 within the housing 10 of the discharge device 8.

Zur Betätigung der Austragvorrichtung 8 ist eine Betätigungshandhabe 30 vorgesehen, die in radialer Richtung der Austragvorrichtung beweglich ist und durch eine Kraftbeaufschlagung genutzt werden kann, um das Volumen der Pumpkammer 18 zu verringern und dadurch das Medium aus der Pumpkammer 18 in den Auslasskanal 20 zu drücken. Dies wiederum führt zu einem Druckanstieg in der Auslasskammer 22, wodurch das Auslassventil 24 geöffnet wird und einen Austrag des Mediums durch die Auslassöffnung 26 hindurch zulässt. Der Weg des Medium von der Pumpkammer 18 bis zur Auslassöffnung 26 wird in Fig. 1 anhand des gepunkteten Pfeils 2 verdeutlicht.For actuating the discharge device 8, an actuating handle 30 is provided, which is movable in the radial direction of the discharge and can be used by a force application to reduce the volume of the pumping chamber 18 and thereby to push the medium from the pumping chamber 18 into the outlet channel 20. This in turn leads to an increase in pressure in the outlet chamber 22, whereby the outlet valve 24 is opened and permits a discharge of the medium through the outlet opening 26 therethrough. The path of the medium from the pumping chamber 18 to the outlet opening 26 is in Fig. 1 illustrated by the dotted arrow 2.

Nach dem Austragvorgang kehrt die Betätigungshandhabe 30 in ihren Ausgangszustand zurück, wobei sich das Volumen in der Pumpkammer 18 wieder vergrößert. Da zu diesem Zeitpunkt das Auslassventil 24 wieder geschlossen ist, führt dieser Volumenanstieg zu einem Ansaugen des Mediums aus dem Medienspeicher 12 durch den Kanal 14 sowie das Einlassventil 16 hindurch. Durch den gepunkteten Pfeil 4 in Fig. 1 ist der Weg des Mediums vom Medienspeicher 12 in die Pumpkammer 18 verdeutlicht.After the discharge operation, the actuating handle 30 returns to its initial state, whereby the volume in the pumping chamber 18 increases again. Since the outlet valve 24 is closed again at this time, this increase in volume leads to a suction of the medium from the media reservoir 12 through the channel 14 and the inlet valve 16 therethrough. By the dotted arrow 4 in Fig. 1 the way of the medium from the media memory 12 in the pumping chamber 18 is illustrated.

Das Einsaugen des Mediums aus dem Medienspeicher 12 beim Neubefüllen der Pumpkammer 18 führt zu einem Unterdruck im Medienspeicher 12. Um diesen Unterdruck wieder ausgleichen zu können, ist es bestimmungsgemäß vorgesehen, dass Luft aus der Umgebung in den Medienspeicher 12 eingesogen wird. Diese Luft kann durch einen Spalt 32 zwischen dem Gehäuse 10 und dem Betätigungstaster 30 in das Gehäuse 10 eindringen und von dort durch eine Filtereinheit 34 bis in den Medienspeicher 12 gelangen. Der Weg, den die Luft aus der Umgebung bis in den Medienspeicher 12 nimmt, ist anhand des gestrichelten Pfeils 6 verdeutlicht.The suction of the medium from the media storage 12 when refilling the pumping chamber 18 leads to a negative pressure in the media storage 12. In order to compensate for this negative pressure, it is intended that air from the environment is sucked into the media storage 12. This air can penetrate through a gap 32 between the housing 10 and the actuating button 30 in the housing 10 and from there pass through a filter unit 34 into the media storage 12. The way that takes the air from the environment into the media storage 12 is illustrated by the dashed arrow 6.

Auch wenn eine Verdunstung des Mediums im Medienspeicher 12 aufgrund der genannten Filtereinheit 34 vermindert wird, so ist es dennoch gewünscht, die Verdunstung des Mediums im Medienspeicher 12 weiter zu reduzieren. Hierfür ist die in Fig. 3 dargestellte Kappe 60 vorgesehen. Die Kappe 60 weist einen unteren weitgehend zylindrischen Abschnitt 62 sowie einen sich daran anschließenden oberen konischen Abschnitt 64 auf. Im Bereich des konischen Abschnitts 64 sind Belüftungsöffnungen 66 vorgesehen.Even if evaporation of the medium in the media reservoir 12 is reduced due to the mentioned filter unit 34, it is still desirable to further reduce the evaporation of the medium in the media reservoir 12. For this is the in Fig. 3 shown cap 60 is provided. The cap 60 has a lower substantially cylindrical portion 62 and an adjoining upper conical portion 64 on. In the region of the conical section 64 ventilation openings 66 are provided.

Die Kappe 60 kann in der in Fig. 4 verdeutlichten Weise auf die Austragvorrichtung 8 der Fig. 1 und 2 aufgeschoben werden. Dabei ist die Formgebung der Kappe 60 derart auf die Formgebung des Gehäuses 10 angepasst, dass im Bereich zweier insbesondere in Fig. 2 dargestellter umlaufender Kontaktspuren 70, 72 die Kappe 60 am Gehäuse 10 zum Anliegen kommt. Zwischen den Kontaktspuren 70 und 72 sind das Gehäuse 10 und der zylindrische Abschnitt 62 der Kappe 60 voneinander beabstandet und begrenzen gemeinsam einen Zwischenraum 80, der durch die Kontaktspuren 70, 72 gegenüber der Umgebung gasdicht abgeschlossen ist.The cap 60 may be in the in Fig. 4 clarified manner on the discharge 8 of the Fig. 1 and 2 be deferred. The shape of the cap 60 is adapted to the shape of the housing 10 such that in the region of two, in particular in Fig. 2 shown circumferential contact traces 70, 72, the cap 60 comes to rest on the housing 10. Between the contact tracks 70 and 72, the housing 10 and the cylindrical portion 62 of the cap 60 are spaced from each other and together define a gap 80, which is sealed by the contact tracks 70, 72 from the environment gas-tight.

Um eine geringe erforderliche Positionierungsgenauigkeit der Kappe 60 gegenüber dem Gehäuse 10 zu erzielen, sind die Kontaktspuren 70, 72 im Bereich von etwa zylindrischen Bereichen der Kappe 60 und des Gehäuses 10 vorgesehen. Dadurch ist gewährleistet, dass die Kappe 60 auch dann, wenn an einer der beiden Kontaktspuren 70, 72 bereits umlaufender Kontakt zwischen der Kappe 60 und dem Gehäuse 11 gegeben ist, dennoch ohne einen deutlich erhöhten Kraftaufwand die Kappe 60 weiter auf das Gehäuse 10 aufgeschoben werden kann, so dass auch an der zweiten Kontaktspur ein umlaufender Kontakt erzielt wird.In order to achieve a low required positioning accuracy of the cap 60 relative to the housing 10, the contact tracks 70, 72 are provided in the region of approximately cylindrical portions of the cap 60 and the housing 10. This ensures that the cap 60, even if at one of the two contact tracks 70, 72 already circulating contact between the cap 60 and the housing 11 is given, yet the cap 60 are further pushed onto the housing 10 without a significantly increased effort can, so that also on the second contact lane a circumferential contact is achieved.

Im aufgesetzten Zustand der Kappe 60, dargestellt in Fig. 4, ist durch die Kontaktspuren 70, 72 und den dadurch gebildeten umlaufenden Ringraum 80 eine vollständige Abdichtung des in diesen Ringraum 80 mündenden Einlassspaltes 32 gegenüber der Umgebung hergestellt. Selbst bei der Lagerung der Austragvorrichtung über einen langen Zeitraum entweicht daher nur ein vernachlässigbar geringer Anteil des Mediums aus dem Medienspeicher 12.In the fitted state of the cap 60, shown in FIG Fig. 4 , is made by the contact traces 70, 72 and the circumferential annular space 80 thus formed a complete seal of the opening into this annulus 80 inlet gap 32 from the environment. Even with the storage of the discharge over a long period, therefore, only a negligible proportion of the medium escapes from the media storage 12th

Während es gewünscht ist, die Einlassöffnung 32 gasdicht abzuschließen, ist dies hinsichtlich der Auslassöffnung 26 bei der vorliegenden Austragvorrichtung nicht gewünscht. Die Auslassöffnung 26 ist aufgrund des Auslassventils 24 ausreichend gegen eine Verdunstung des Mediums geschützt. Es ist allerdings von Vorteil, wenn nach einem Austragvorgang auch bei bereits aufgesetzter Kappe 60 Medienreste, die im Bereich der Auslassöffnung 26 verblieben sind, trocknen können. Zu diesem Zweck sind die bereits beschriebenen Belüftungsöffnungen 66 im konischen Abschnitt 64 der Kappe 60 vorgesehen. Sie gestatten einen Luftaustausch und damit ein schnelles Trocknen der Auslassöffnung 26. Aufgrund der Kontaktspur 70 geht diese Gestaltung mit Belüftungsöffnungen 66 jedoch nicht mit einem Verlust der gasdichten Gestaltung der Einlassöffnung 32 einher.While it is desired to gas-close the inlet port 32, this is not desired with respect to the outlet port 26 in the present dispenser. The outlet opening 26 is sufficiently protected due to the outlet valve 24 against evaporation of the medium. However, it is of advantage if, after a dispensing operation, even with the cap already attached, 60 media residues that have remained in the area of the outlet opening 26 can dry. For this purpose, the ventilation openings 66 already described are provided in the conical section 64 of the cap 60. They allow an exchange of air and thus a quick drying of the outlet opening 26. Due to the contact track 70, however, this design with ventilation openings 66 is not accompanied by a loss of the gas-tight design of the inlet opening 32.

Claims (5)

Austragvorrichtung (8) für flüssige Medien mit - einem Gehäuse (10), - einem Medienspeicher (12), - einer Auslassöffnung (26) zum Austrag des Mediums und - einer Einlassöffnung (32) zum Einlass von Luft zum Zwecke des Volumenausgleichs im Medienspeicher (12),
wobei - eine Kappe (60) vorgesehen ist, die auf das Gehäuse (10) aufsetzbar ist und die im aufgesetzten Zustand die Auslassöffnung (26) schützt, dadurch gekennzeichnet, dass
die Kappe (60) die Einlassöffnung (32) gegenüber einer Umgebung einerseits und gegenüber der Auslassöffnung (26) andererseits gasdicht verschließt. Discharge device (8) for liquid media with a housing (10), a media storage (12), - An outlet opening (26) for discharging the medium and - An inlet port (32) for the inlet of air for the purpose of volume compensation in the media storage (12),
in which - A cap (60) is provided, which is placed on the housing (10) and which protects the outlet opening (26) in the mounted state, characterized in that
the cap (60) seals the inlet opening (32) in a gastight manner against an environment on the one hand and with respect to the outlet opening (26) on the other hand. Austragvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass
die Einlassöffnung (32) im Bereich einer gegenüber dem Gehäuse bewegbaren Betätigungshandhabe (30) vorgesehen ist und vorzugsweise als Einlassspalt (32) zwischen der Betätigungshandhabe (30) und dem Gehäuse (10) ausgebildet ist.Discharge device according to claim 1,
characterized in that
the inlet opening (32) is provided in the region of an actuating handle (30) movable relative to the housing and is preferably designed as an inlet gap (32) between the actuating handle (30) and the housing (10). Austragvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die Kappe (60) im aufgesetzten Zustand gemeinsam mit dem Gehäuse (10) einen gegenüber der Umgebung gasdicht abgeschlossenen Raum (80) begrenzt, wobei die Einlassöffnung (32) in diesen abgeschlossenen Raum (80) mündet.Discharge device according to claim 1 or 2,
characterized in that
the cap (60) in the fitted state together with the housing (10) delimits a space (80) sealed off from the environment, the inlet opening (32) opening into this closed space (80). Austragvorrichtung nach einem der vorstehenden Ansprüchen,
dadurch gekennzeichnet, dass
im aufgesetzten Zustand die Kappe (60) entlang zweier umlaufender Kontaktspuren (70, 72) am Gehäuse (10) anliegt, wobei der abgeschlossene Raum (80) zwischen den beiden Kontaktspuren (70, 72) vorgesehen ist.Discharge device according to one of the preceding claims,
characterized in that
in the fitted state, the cap (60) along two circumferential contact tracks (70, 72) on the housing (10), wherein the closed space (80) between the two contact tracks (70, 72) is provided. Austragvorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
die Kappe (60) zumindest eine Belüftungsöffnung (66) aufweist, über die die Auslassöffnung (26) mit der Umgebung verbunden ist.Discharge device according to one of the preceding claims,
characterized in that
the cap (60) has at least one ventilation opening (66) via which the outlet opening (26) is connected to the environment.
EP09015671.2A 2009-01-23 2009-12-18 Application device Active EP2210674B1 (en)

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Also Published As

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DE102009006430A1 (en) 2010-07-29
EP2210674B1 (en) 2013-06-26
JP2010168119A (en) 2010-08-05
US20100187260A1 (en) 2010-07-29
JP5390420B2 (en) 2014-01-15
EP2210674A3 (en) 2011-05-18
US8292129B2 (en) 2012-10-23

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