EP1739032B1 - Dispensing head for a container having a valve for dispensing a fluid - Google Patents

Dispensing head for a container having a valve for dispensing a fluid Download PDF

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Publication number
EP1739032B1
EP1739032B1 EP06005457A EP06005457A EP1739032B1 EP 1739032 B1 EP1739032 B1 EP 1739032B1 EP 06005457 A EP06005457 A EP 06005457A EP 06005457 A EP06005457 A EP 06005457A EP 1739032 B1 EP1739032 B1 EP 1739032B1
Authority
EP
European Patent Office
Prior art keywords
channel
dispensing head
piston
head according
outlet
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.)
Not-in-force
Application number
EP06005457A
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German (de)
French (fr)
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EP1739032A1 (en
Inventor
Rüdiger Belau
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.)
Lindal Ventil GmbH
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Lindal Ventil GmbH
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Publication date
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Priority to PL06005457T priority Critical patent/PL1739032T3/en
Publication of EP1739032A1 publication Critical patent/EP1739032A1/en
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Publication of EP1739032B1 publication Critical patent/EP1739032B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B65D83/205—Actuator caps, or peripheral actuator skirts, attachable to the aerosol container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/753—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by details or accessories associated with outlets
    • B65D83/7535—Outlet valves opened by the product to be delivered

Definitions

  • the present invention relates to a dispensing head for a container having a valve for dispensing a medium.
  • a dispensing head for a container having a valve for dispensing a medium.
  • aerosol containers are provided as containers, in which, by opening the valve, the medium to be discharged emerges under pressure through the valve.
  • gels, pasty and foaming media and others can be used as the medium in the dispensing head.
  • the dispensing head is provided with a closure device which closes the outlet opening and thus prevents re-foaming and / or sticking of the medium in the outlet opening.
  • WO 03/026983 A1 describes, for example, a self-closing dispensing head for a pressure vessel.
  • a piston-shaped closing element In a channel, which opens into the dispensing opening, a piston-shaped closing element is provided, which projects beyond the dispensing opening and bears sealingly from the outside at the dispensing opening.
  • the closing element has at the opposite rear end of an elastic spring element which is integrally formed on the piston and this retracts into its closed position.
  • a dispensing head in whose outlet channel a piston element is arranged, which has a projecting needle.
  • the outlet channel is closed by a closing element with a central through hole.
  • the through hole forms the outlet for the medium to be discharged.
  • the needle of the piston element In the closed position, the needle of the piston element is pressed in an inner seat on the closure element. The force is applied by a coil spring which presses the piston element in its closed position.
  • a dispensing head in which a piston element occluding a dispensing opening is biased by a helical spring. Upon actuation of the dispensing head, a pressure is built up in the piston element which presses the piston element against the spring and thus releases the dispensing opening.
  • a dispensing head in which a movably mounted sealing body is provided in an outlet channel.
  • a closure element In the outlet channel, a closure element is provided which has a central outlet opening. The protruding needle closes the outlet opening in an advanced position. In the advanced position, the sealing element is biased by a coil spring.
  • the invention has for its object to provide a dispensing head with a closing device, which ensures an effective closing of the outlet opening by simple means.
  • the dispensing head according to the invention is intended for a container with a valve for dispensing a medium, preferably a viscous, self-foaming and / or gelatinous medium.
  • the dispensing head has an attachment body having an annular portion for attachment to the container and an associated actuator.
  • the actuator has centrally in the annular portion a nozzle which cooperates in the attached state of the Aufsetz stressess with the valve of the container.
  • the dispensing head according to the invention also has a channel element which has an outlet channel with a piston element arranged displaceably therein.
  • the outlet channel is connected via a feed channel with the nozzle of the actuating element, so that the exiting medium from the container, via the valve in the nozzle of the Aufsetz stressess and then via the feed channel in the outlet channel of the channel element passes.
  • the actuating element has an elastic spring element, which bears against a rear end of the piston element and presses the front end of the piston element sealingly into the outlet opening of the outlet channel.
  • the outlet opening is sealed from the inside.
  • the channel member further has a chamber extending around a shank portion of the piston member in a portion of the channel member.
  • the chamber is in direct communication with the supply channel, wherein the chamber is bounded at its ends pointing to the rear end of the piston element by a sealing element connected to the shaft.
  • the sealing element connected to the shaft is sealingly against the wall of the outlet channel.
  • the inventive construction of the dispensing head has a number of advantages.
  • One of the key advantages is that the outlet channel is sealed from the inside by the piston element. Further, the piston member is withdrawn to open in the outlet channel, in which the chamber fills with the pressurized medium and retracts the sealing element from the sealing position.
  • Another advantage also arises during assembly, since the spring element is not part of the channel element or the piston element, but is connected to the attachment body. Thus, the piston element can be easily mounted in the channel element.
  • the spring element is an integrally formed with the actuating element tongue.
  • the tongue is arranged such that the piston member is pressed by the tongue sealingly into the outlet opening.
  • the diameter of the channel element tapers in the region of the outlet opening frustoconical to a Seat to form the piston element.
  • the piston element preferably also has a correspondingly tapering tip for better sealing.
  • the front end of the piston member thus has a sealing abutment in the outlet opening.
  • the chamber to the rear end final sealing element is designed as a cup-shaped element having a transverse to the piston element base wall and a circumferential side wall.
  • the side wall faces the front end of the piston element and bears sealingly against the chamber wall.
  • the sealing element is open towards the front end of the piston element.
  • the actuating element has an opening which is covered by a cover.
  • the cover member is disposed in the opening in the actuator and also covers the channel member.
  • the cover member forms an actuating surface which serves to trigger the valve.
  • the channel element is inserted at its front end and / or in the region of the feed channel into a corresponding opening in the actuating element.
  • the insertion of the channel member in the opening in the actuator allows a particularly simple installation, since the fully assembled channel element can be inserted into the actuator.
  • the actuator has a front skirt wall, in which the outlet opening is provided, wherein the skirt wall has a latching nose, which is disposed above the Aufsetzrings before a first use and engages behind a projection on the annular portion after the first operation.
  • the locking lug serves as a tamper-evident closure, which indicates to the consumer that the dispensing head has not yet been actuated. In the first operation, the locking lug pushes with the actuating element behind a projection on the annular Aufsetzharm of the actuating element and remains here.
  • the dispensing head has a high position, in which the valve of the container is closed and the piston member bears sealingly from the inside at the outlet opening. In a dispensing position, the valve is opened by a pressure on the dispensing head and the piston element is withdrawn from the outlet opening by the pressure of the medium in the outlet channel to release it.
  • outlet opening and retracted channel element are dimensioned such that the flow rate of leaking medium in the region of the outlet opening is throttled such that the medium located in the outlet channel and the chamber pushes the piston member against the force of the spring element. It thus establishes a balance in which the pressure occurring at the outlet opening by the throttling of the volume flow sufficient to retain the piston member against the pressure of the spring.
  • the dispensing head according to the invention is shown in Figure 1 with an attached cap 10.
  • the cap 10 snaps onto an annular attachment 12 of the dispensing head.
  • the annular cap 12 has a slightly widening outward cylinder wall, on the inside of projections 14 are provided.
  • the projections 14 engage in the mounted state a circumferential bead on the container (not shown) to secure the annular portion on the container.
  • the actuator 16 is connected via two film joints 18 with the annular portion 12.
  • the two film hinges 18 are arranged symmetrically to the sectional plane in Figure 1, so that only the rear joint 18 can be seen in Figure 1.
  • the actuator 16 has a nozzle 20 which is provided for placement on the valve.
  • the nozzle 20 encloses a first channel portion 22 into which the medium to be discharged passes from the valve.
  • the actuating element 16 also has on its front side a skirt wall 24 which has a latching nose 26.
  • Figure 1 shows the dispensing head as in a not yet actuated position.
  • the locking lug 26 is disposed outside of the annular attachment 12.
  • the annular cap 12 has, as clearly visible in the detail view in Figure 2, a projection 28 which engages behind the latching lug 26 after a first operation. In the latched position, the dispensing head is inclined forward by an angle A.
  • the angle A is for example about 2.5 °.
  • the upper end of the skirt wall 24 has a tubular extension 30 projecting from the skirt wall 24 and having a cylindrical receiving portion for the channel member 32.
  • the channel element 32 encloses an outlet channel for the medium to be discharged.
  • the channel element has at a rear end a portion 34 into which a feed channel 38 opens.
  • the channel portion 34 has a diameter which is significantly larger than the outer diameter of the shaft 36.
  • the channel element has a chamber 40 which is bounded on the rear by a sealing element 42.
  • the sealing element 42 has a bottom 44 and projecting side walls 46, which on the Inner wall of the channel is applied.
  • the chamber 40 is followed by a channel section 48 with a mean diameter.
  • the channel portion 48 merges into the channel portion 50, in which a narrow gap between the piston 36 and the inner wall of the channel member is provided.
  • the piston 36 tapers at its front end 52 and abuts with the front end to a correspondingly shaped seat surface 54 of the front channel portion 50.
  • the rear end 56 of the piston member is provided with a circumferential cylindrical wall 56.
  • the actuator 16 has at its rear end a tongue 58 which abuts with a leg 60 at the rear end of the piston member.
  • the leg 60 includes with a second leg 62 an acute angle.
  • the second leg 62 together with a spaced third leg 64 a recess 66th
  • the channel element in the actuator is closed by a rigid cover 68.
  • the cover member 68 has an approximately oval shape with a circumferential side wall 70 which is disposed in the recess 66.
  • the side wall has lateral webs, which are fastened with outwardly facing locking lugs in the actuating element.
  • the user Upon actuation, the user exerts a pressure on the cover member 68 with a finger, which is passed through the channel member, the feed channel 38 and the nozzle 20.
  • the nozzle 20 forwards the force to the closed valve (not shown).
  • the valve opens and that Medium exits.
  • the leaked medium accumulates in the chamber 40 and exerts a force on the base member 44.
  • the piston is pushed back in the outlet channel against the force of the spring leg 60 and thus releases at its front end 52, the outlet opening for the escape of the medium. If the pressure on the actuating element leaves, the valve closes and the spring element 60 pushes the piston element into its closed position.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
  • Closures For Containers (AREA)

Description

Die vorliegende Erfindung betrifft einen Abgabekopf für einen Behälter mit einem Ventil zur Abgabe eines Mediums. Als Behälter sind insbesondere sogenannte Aerosolbehälter vorgesehen, bei denen durch Öffnen des Ventils das auszutragende Medium unter Druck durch das Ventil austritt. Als Medium können bei dem Abgabekopf insbesondere Gele, pastöse und schäumende Medien und andere eingesetzt werden. Der Abgabekopf ist mit einer Verschlußeinrichtung versehen, die die Austrittsöffnung verschließt und so ein Nachschäumen und/oder Verkleben des Mediums in der Austrittsöffnung verhindert.The present invention relates to a dispensing head for a container having a valve for dispensing a medium. In particular, so-called aerosol containers are provided as containers, in which, by opening the valve, the medium to be discharged emerges under pressure through the valve. In particular, gels, pasty and foaming media and others can be used as the medium in the dispensing head. The dispensing head is provided with a closure device which closes the outlet opening and thus prevents re-foaming and / or sticking of the medium in the outlet opening.

Abgabevorrichtungen mit einer Verschlußeinrichtung sind bekannt. WO 03/026983 A1 beschreibt beispielsweise einen selbstschließenden Abgabekopf für einen Druckbehälter. In einem Kanal, der in die Ausgabeöffnung mündet, ist ein kolbenförmiges Schließelement vorgesehen, das über die Ausgabeöffnung vorsteht und von außen an der Ausgabeöffnung dichtend anliegt. Das Schließelement besitzt am gegenüberliegenden hinteren Ende ein elastisches Federelement, das an dem Kolben angeformt ist und diesen in seine Schließstellung zurückzieht. Durch Druck auf das Betätigungselement wird sowohl ein Öffnungsmechanismus für das Ventil betätigt als auch das Kolbenelement und der dazugehörige Kanalabschnitt derart relativ zueinander bewegt, daß die Ausgabeöffnung teilweise freigegeben wird. Das Medium tritt über den Austrittskanal an dem Kolben vorbei aus. Läßt der Druck auf das Betätigungselement nach, so schließt das Ventil des Behälters und das elastische Element am Ende des Schließelements zieht dieses in seine Verschlußstellung zurück.Dispensers with a closure device are known. WO 03/026983 A1 describes, for example, a self-closing dispensing head for a pressure vessel. In a channel, which opens into the dispensing opening, a piston-shaped closing element is provided, which projects beyond the dispensing opening and bears sealingly from the outside at the dispensing opening. The closing element has at the opposite rear end of an elastic spring element which is integrally formed on the piston and this retracts into its closed position. By pressing on the actuator both an opening mechanism for the valve is actuated and the piston member and the associated channel portion is moved relative to each other so that the dispensing opening is partially released. The medium exits past the piston via the exit channel. If the pressure on the actuator, the valve of the container closes and the elastic element at the end of the closing element pulls this back into its closed position.

Als nachteilig an dem bekannten Aufbau hat sich herausgestellt, daß die Austrittsöffnung nur in einem geringen Maße durch eine Relativbewegung des Kolbenelements gegenüber dem Abgabekopf freigegeben wird.A disadvantage of the known structure has been found that the outlet opening is released only to a small extent by a relative movement of the piston member relative to the dispensing head.

Aus EP 0 342 741 ist ein Abgabekopf bekannt, in dessen Austrittskanal ein Kolbenelement angeordnet ist, das eine vorspringende Nadel aufweist. Der Austrittskanal ist über ein Schlußelement mit einer zentralen Durchgangsbohrung verschlossen. Die Durchgangsbohrung bildet die Austrittsöffnung für das auszutragende Medium. In der verschlossenen Position wird die Nadel des Kolbenelements in einem innenliegenden Sitz an dem Verschlußelement gedrückt. Die Kraft wird hierbei durch eine Spiralfeder aufgebracht, die das Kolbenelement in seine Verschlußposition drückt.Out EP 0 342 741 a dispensing head is known, in whose outlet channel a piston element is arranged, which has a projecting needle. The outlet channel is closed by a closing element with a central through hole. The through hole forms the outlet for the medium to be discharged. In the closed position, the needle of the piston element is pressed in an inner seat on the closure element. The force is applied by a coil spring which presses the piston element in its closed position.

Aus US 3,913,804 ist ein Abgabekopf bekannt, bei dem ein eine Ausgabeöffnung verschließendes Kolbenelement durch eine Spiralfeder vorgespannt ist. Bei der Betätigung des Abgabekopfes wird in dem Kolbenelement ein Druck aufgebaut, der das Kolbenelement gegen die Feder drückt und damit die Ausgabeöffnung freigibt.Out US 3,913,804 For example, a dispensing head is known in which a piston element occluding a dispensing opening is biased by a helical spring. Upon actuation of the dispensing head, a pressure is built up in the piston element which presses the piston element against the spring and thus releases the dispensing opening.

Aus EP 1 295 812 ist ein selbst schließender Ausgabekopf für einen Druckbehälter bekannt. Ein die Ausgabeöffnung verschließendes Schließelement wird bei einer Betätigung des Abgabekopfs über eine Anlagefläche aus einer Verschlußöffnung herausgedrückt.Out EP 1 295 812 a self-closing dispensing head for a pressure vessel is known. A closing element which closes the dispensing opening is pressed out of a closure opening via an abutment surface when the dispensing head is actuated.

Aus US 4,182,496 ist ein Abgabekopf bekannt, bei dem in einem Austrittskanal ein beweglich gelagerter Dichtkörper vorgesehen ist. In dem Austrittskanal ist ein Verschlußelement vorgesehen, das eine zentrale Austrittsöffnung besitzt. Die vorstehende Nadel verschließt in einer vorgeschobenen Position die Austrittsöffnung. In die vorgeschobene Position ist das Dichtelement über eine Spiralfeder vorgespannt.Out US 4,182,496 a dispensing head is known in which a movably mounted sealing body is provided in an outlet channel. In the outlet channel, a closure element is provided which has a central outlet opening. The protruding needle closes the outlet opening in an advanced position. In the advanced position, the sealing element is biased by a coil spring.

Der Erfindung liegt die Aufgabe zugrunde einen Abgabekopf mit einer Verschließeinrichtung zu schaffen, der mit einfachen Mitteln ein wirkungsvolles Verschließen der Austrittsöffnung gewährleistet.The invention has for its object to provide a dispensing head with a closing device, which ensures an effective closing of the outlet opening by simple means.

Erfindungsgemäß wird die Aufgabe durch einen Abgabekopf mit den Merkmalen aus Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen bilden die Gegenstände der Unteransprüche.According to the invention the object is achieved by a dispensing head having the features of claim 1. Advantageous embodiments form the subject of the dependent claims.

Der erfindungsgemäße Abgabekopf ist für einen Behälter mit einem Ventil zur Abgabe eines Mediums, bevorzugt eines viskosen, selbstschäumenden und/oder gelartigen Mediums vorgesehen. Der Abgabekopf besitzt einen Aufsetzkörper, der einen ringförmigen Abschnitt zur Befestigung mit dem Behälter und ein damit verbundenes Betätigungselement aufweist. Das Betätigungselement besitzt zentral in dem ringförmigen Abschnitt einen Stutzen, der im aufgesetzten Zustand des Aufsetzkörpers mit dem Ventil des Behälters zusammenwirkt. Der erfindungsgemäße Abgabekopf besitzt ferner ein Kanalelement, das einen Austrittskanal mit einem darin verschieblich angeordneten Kolbenelement besitzt. Der Austrittskanal ist über einen Zuführkanal mit dem Stutzen des Betätigungselements verbunden, so daß das austretende Medium aus dem Behälter, über das Ventil in den Stutzen des Aufsetzkörpers und anschließend über den Zuführkanal in den Austrittskanal des Kanalelements gelangt. Erfindungsgemäß besitzt das Betätigungselement ein elastisches Federelement, das an einem hinteren Ende des Kolbenelementes anliegt und das vordere Ende des Kolbenelements dichtend in die Austrittsöffnung des Austrittskanals drückt. Es erfolgt also bei dem erfindungsgemäßen Aufbau eine Abdichtung der Austrittsöffnung von innen. Das Kanalelement besitzt ferner eine Kammer, die sich um einen Schaftabschnitt des Kolbenelements in einem Abschnitt des Kanalelements erstreckt. Die Kammer steht in direkter Verbindung mit dem Zuführkanal, wobei die Kammer an ihrem zum hinteren Ende des Kolbenelements weisenden Enden durch ein mit dem Schaft verbundenes Dichtelement begrenzt ist. Das mit dem Schaft verbundene Dichtelement liegt dichtend an der Wand des Austrittskanals an.The dispensing head according to the invention is intended for a container with a valve for dispensing a medium, preferably a viscous, self-foaming and / or gelatinous medium. The dispensing head has an attachment body having an annular portion for attachment to the container and an associated actuator. The actuator has centrally in the annular portion a nozzle which cooperates in the attached state of the Aufsetzkörpers with the valve of the container. The dispensing head according to the invention also has a channel element which has an outlet channel with a piston element arranged displaceably therein. The outlet channel is connected via a feed channel with the nozzle of the actuating element, so that the exiting medium from the container, via the valve in the nozzle of the Aufsetzkörpers and then via the feed channel in the outlet channel of the channel element passes. According to the invention, the actuating element has an elastic spring element, which bears against a rear end of the piston element and presses the front end of the piston element sealingly into the outlet opening of the outlet channel. Thus, in the structure according to the invention, the outlet opening is sealed from the inside. The channel member further has a chamber extending around a shank portion of the piston member in a portion of the channel member. The chamber is in direct communication with the supply channel, wherein the chamber is bounded at its ends pointing to the rear end of the piston element by a sealing element connected to the shaft. The sealing element connected to the shaft is sealingly against the wall of the outlet channel.

Der erfindungsgemäße Aufbau des Abgabekopfes besitzt eine Reihe von Vorzügen. Einer der zentralen Vorzüge liegt darin, daß der Austrittskanal von innen durch das Kolbenelement abgedichtet wird. Ferner wird das Kolbenelement zum Öffnen in den Austrittskanal zurückgezogen, in dem sich die Kammer mit dem unter Druck stehenden Medium füllt und das Dichtelement aus der abdichtenden Position zurückzieht. Ein weiterer Vorteil ergibt sich auch bei der Montage, da das Federelement nicht Bestandteil des Kanalelements oder des Kolbenelements ist, sondern mit dem Aufsetzkörper verbunden ist. So kann das Kolbenelement in dem Kanalelement einfach montiert werden.The inventive construction of the dispensing head has a number of advantages. One of the key advantages is that the outlet channel is sealed from the inside by the piston element. Further, the piston member is withdrawn to open in the outlet channel, in which the chamber fills with the pressurized medium and retracts the sealing element from the sealing position. Another advantage also arises during assembly, since the spring element is not part of the channel element or the piston element, but is connected to the attachment body. Thus, the piston element can be easily mounted in the channel element.

Das Federelement ist ein einstückig mit dem Betätigungselement ausgebildete Zunge. Die Zunge ist dabei derart angeordnet, daß das Kolbenelement durch die Zunge dichtend in die Austrittsöffnung gedrückt wird.The spring element is an integrally formed with the actuating element tongue. The tongue is arranged such that the piston member is pressed by the tongue sealingly into the outlet opening.

In einer bevorzugten Ausgestaltung verjüngt sich der Durchmesser des Kanalelements im Bereich der Austrittsöffnung kegelstumpfförmig, um eine Sitzfläche für das Kolbenelement zu bilden. Das Kolbenelement verfügt bevorzugt zur besseren Abdichtung ebenfalls über eine sich entsprechend verjüngende Spitze. Das vordere Ende des Kolbenelements besitzt so eine dichtende Anlage in der Austrittsöffnung.In a preferred embodiment, the diameter of the channel element tapers in the region of the outlet opening frustoconical to a Seat to form the piston element. The piston element preferably also has a correspondingly tapering tip for better sealing. The front end of the piston member thus has a sealing abutment in the outlet opening.

Das die Kammer zum hinteren Ende abschließende Dichtelement ist als tassenförmiges Element ausgebildet, das eine quer zum Kolbenelement stehende Grundwand und eine umlaufende Seitenwand besitzt. Die Seitenwand weist zum vorderen Ende des Kolbenelements und liegt dichtend an der Kammerwand an. Das Dichtelement ist zum vorderen Ende des Kolbenelements hin geöffnet.The chamber to the rear end final sealing element is designed as a cup-shaped element having a transverse to the piston element base wall and a circumferential side wall. The side wall faces the front end of the piston element and bears sealingly against the chamber wall. The sealing element is open towards the front end of the piston element.

In einer bevorzugten Ausgestaltung besitzt das Betätigungselement eine Öffnung, die durch ein Abdeckelement abgedeckt ist. Das Abdeckelement ist in der Öffnung in dem Betätigungselement angeordnet und deckt ebenfalls das Kanalelement ab.In a preferred embodiment, the actuating element has an opening which is covered by a cover. The cover member is disposed in the opening in the actuator and also covers the channel member.

In einer bevorzugten Ausgestaltung bildet das Abdeckelement eine Betätigungsfläche, die zum Auslösen des Ventils dient.In a preferred embodiment, the cover member forms an actuating surface which serves to trigger the valve.

Bevorzugt ist das Kanalelement an seinem vorderen Ende und/oder im Bereich des Zuführkanals in eine entsprechende Öffnung in dem Betätigungselement eingesetzt. Das Einsetzen des Kanalelements in die Öffnung in dem Betätigungselement erlaubt eine besonders einfache Montage, da das fertig montierte Kanalelement in das Betätigungselement eingesetzt werden kann.Preferably, the channel element is inserted at its front end and / or in the region of the feed channel into a corresponding opening in the actuating element. The insertion of the channel member in the opening in the actuator allows a particularly simple installation, since the fully assembled channel element can be inserted into the actuator.

Bevorzugt besitzt das Betätigungselement eine vordere Schürzenwand, in der die Austrittsöffnung vorgesehen ist, wobei die Schürzenwand eine Rastnase besitzt, die vor einer ersten Benutzung oberhalb des Aufsetzrings angeordnet ist und nach der ersten Betätigung einen Vorsprung an dem ringförmigen Abschnitt hintergreift. Die Rastnase dient als Originalitätsverschluß, der dem Verbraucher anzeigt, daß der Abgabekopf noch nicht betätigt wurde. Bei der ersten Betätigung schiebt sich die Rastnase mit dem Betätigungselement hinter einen Vorsprung an dem ringförmigen Aufsetzkörper des Betätigungselements und verbleibt hier.Preferably, the actuator has a front skirt wall, in which the outlet opening is provided, wherein the skirt wall has a latching nose, which is disposed above the Aufsetzrings before a first use and engages behind a projection on the annular portion after the first operation. The locking lug serves as a tamper-evident closure, which indicates to the consumer that the dispensing head has not yet been actuated. In the first operation, the locking lug pushes with the actuating element behind a projection on the annular Aufsetzkörper of the actuating element and remains here.

Der Abgabekopf besitzt eine hohe Position, in der das Ventil des Behälters geschlossen ist und das Kolbenelement dichtend von innen an der Austrittsöffnung anliegt. In einer Abgabeposition ist das Ventil durch einen Druck auf den Abgabekopf geöffnet und das Kolbenelement wird durch den Druck des Mediums in dem Austrittskanal von der Austrittsöffnung zurückgezogen, um diese freizugeben.The dispensing head has a high position, in which the valve of the container is closed and the piston member bears sealingly from the inside at the outlet opening. In a dispensing position, the valve is opened by a pressure on the dispensing head and the piston element is withdrawn from the outlet opening by the pressure of the medium in the outlet channel to release it.

Für einen gleichmäßigen Volumenstrom sind Austrittsöffnung und zurückgezogenes Kanalelement derart bemessen, daß der Volumenstrom des austretenden Mediums im Bereich der Austrittsöffnung derart gedrosselt wird, daß das in dem Austrittskanal und der Kammer befindliche Medium das Kolbenelement gegen die Kraft des Federelements zurückdrückt. Es stellt sich also ein Gleichgewicht ein, bei dem der an der Austrittsöffnung durch die Drosselung des Volumenstroms auftretende Druck ausreicht, um das Kolbenelement gegen den Druck der Feder zurückzuhalten.For a uniform flow rate outlet opening and retracted channel element are dimensioned such that the flow rate of leaking medium in the region of the outlet opening is throttled such that the medium located in the outlet channel and the chamber pushes the piston member against the force of the spring element. It thus establishes a balance in which the pressure occurring at the outlet opening by the throttling of the volume flow sufficient to retain the piston member against the pressure of the spring.

Ein bevorzugtes Ausführungsbeispiel wird nachfolgend anhand der Figuren näher erläutert. Es zeigt:

Figur 1
einen Querschnitt durch den erfindungsgemäßen Abgabekopf in seiner verschlossenen Position und
Figur 2
den Originalitätsverschluß nach einem ersten Gebrauch.
A preferred embodiment will be explained in more detail with reference to FIGS. It shows:
FIG. 1
a cross section through the dispensing head according to the invention in its closed position and
FIG. 2
the originality closure after a first use.

Der erfindungsgemäße Abgabekopf ist in Figur 1 mit einer aufgesetzten Kappe 10 dargestellt. Die Kappe 10 schnappt auf einen ringförmigen Aufsatz 12 des Abgabekopfes. Der ringförmige Aufsatz 12 besitzt eine sich leicht nach außen erweiternde Zylinderwand, auf deren Innenseite Vorsprünge 14 vorgesehen sind. Die Vorsprünge 14 hintergreifen im aufgesetzten Zustand einen umlaufenden Wulst an dem Behälter (nicht dargestellt), um den ringförmigen Abschnitt auf dem Behälter zu sichern.The dispensing head according to the invention is shown in Figure 1 with an attached cap 10. The cap 10 snaps onto an annular attachment 12 of the dispensing head. The annular cap 12 has a slightly widening outward cylinder wall, on the inside of projections 14 are provided. The projections 14 engage in the mounted state a circumferential bead on the container (not shown) to secure the annular portion on the container.

Das Betätigungselement 16 ist über zwei Filmgelenke 18 mit dem ringförmigen Abschnitt 12 verbunden. Die beiden Filmgelenke 18 sind symmetrisch zur Schnittebene in Figur 1 angeordnet, so daß lediglich das hintere Gelenk 18 in Figur 1 zu erkennen ist.The actuator 16 is connected via two film joints 18 with the annular portion 12. The two film hinges 18 are arranged symmetrically to the sectional plane in Figure 1, so that only the rear joint 18 can be seen in Figure 1.

Das Betätigungselement 16 besitzt einen Stutzen 20, der zum Aufsetzen auf das Ventil vorgesehen ist. Der Stutzen 20 umschließt einen ersten Kanalabschnitt 22, in den das auszutragende Medium aus dem Ventil gelangt. Das Betätigungselement 16 besitzt ferner an seiner vorderen Seite eine Schürzenwand 24, die eine Rastnase 26 besitzt. Figur 1 zeigt den Abgabekopf wie in einer noch nicht betätigten Position. Hier ist die Rastnase 26 außerhalb des ringförmigen Aufsatzes 12 angeordnet. Der ringförmige Aufsatz 12 besitzt, wie in der Detailansicht in Figur 2 deutlich zu erkennen, einen Vorsprung 28, den die Rastnase 26 nach einer ersten Betätigung hintergreift. In der verrasteten Position ist der Abgabekopf um einen Winkel A nach vorne geneigt. Der Winkel A beträgt beispielsweise ungefähr 2,5°.The actuator 16 has a nozzle 20 which is provided for placement on the valve. The nozzle 20 encloses a first channel portion 22 into which the medium to be discharged passes from the valve. The actuating element 16 also has on its front side a skirt wall 24 which has a latching nose 26. Figure 1 shows the dispensing head as in a not yet actuated position. Here, the locking lug 26 is disposed outside of the annular attachment 12. The annular cap 12 has, as clearly visible in the detail view in Figure 2, a projection 28 which engages behind the latching lug 26 after a first operation. In the latched position, the dispensing head is inclined forward by an angle A. The angle A is for example about 2.5 °.

Das obere Ende der Schürzenwand 24 besitzt einen rohrförmigen Ansatz 30, der aus der Schürzenwand 24 vorsteht und einen zylindrischen Aufnahmeabschnitt für das Kanalelement 32 besitzt.The upper end of the skirt wall 24 has a tubular extension 30 projecting from the skirt wall 24 and having a cylindrical receiving portion for the channel member 32.

Das Kanalelement 32 umschließt einen Austrittskanal für das auszutragende Medium. Das Kanalelement besitzt an einem hinteren Ende einen Abschnitt 34, in den ein Zuführkanal 38 mündet. Der Kanalabschnitt 34 besitzt einen Durchmesser, der deutlich größer als der Außendurchmesser des Schafts 36 ist. Im Bereich des Zuführkanals besitzt das Kanalelement eine Kammer 40, die rückseitig durch ein Dichtelement 42 begrenzt wird. Das Dichtelement 42 besitzt einen Grund 44 und vorstehende Seitenwände 46, die an der Innenwand des Kanals anliegt. An die Kammer 40 schließt sich ein Kanalabschnitt 48 mit einem mittleren Durchmesser an. Der Kanalabschnitt 48 geht in den Kanalabschnitt 50 über, in dem ein schmaler Spalt zwischen dem Kolben 36 und der Innenwand des Kanalelements vorgesehen ist. Der Kolben 36 verjüngt sich an seinem vorderen Ende 52 und liegt mit dem vorderen Ende an einer entsprechend geformten Sitzfläche 54 des vorderen Kanalabschnitts 50 an.The channel element 32 encloses an outlet channel for the medium to be discharged. The channel element has at a rear end a portion 34 into which a feed channel 38 opens. The channel portion 34 has a diameter which is significantly larger than the outer diameter of the shaft 36. In the region of the feed channel, the channel element has a chamber 40 which is bounded on the rear by a sealing element 42. The sealing element 42 has a bottom 44 and projecting side walls 46, which on the Inner wall of the channel is applied. The chamber 40 is followed by a channel section 48 with a mean diameter. The channel portion 48 merges into the channel portion 50, in which a narrow gap between the piston 36 and the inner wall of the channel member is provided. The piston 36 tapers at its front end 52 and abuts with the front end to a correspondingly shaped seat surface 54 of the front channel portion 50.

In dem dargestellten Ausführungsbeispiel ist das hintere Ende 56 des Kolbenelements mit einer umlaufenden Zylinderwand 56 versehen. Das Betätigungselement 16 besitzt an seinem hinteren Ende eine Zunge 58, die mit einem Schenkel 60 an dem hinteren Ende des Kolbenelements anliegt. Der Schenkel 60 schließt mit einem zweiten Schenkel 62 einen spitzen Winkel ein. Der zweite Schenkel 62 bildet zusammen mit einem beabstandeten dritten Schenkel 64 eine Vertiefung 66.In the illustrated embodiment, the rear end 56 of the piston member is provided with a circumferential cylindrical wall 56. The actuator 16 has at its rear end a tongue 58 which abuts with a leg 60 at the rear end of the piston member. The leg 60 includes with a second leg 62 an acute angle. The second leg 62 together with a spaced third leg 64 a recess 66th

Das Kanalelement in dem Betätigungselement ist durch ein starres Abdeckelement 68 verschlossen. Das Abdeckelement 68 besitzt eine ungefähr ovale Form mit einer umlaufenden Seitenwand 70, die in der Ausnehmung 66 angeordnet ist. Die Seitenwand besitzt seitliche Stege, die mit nach außen weisenden Rastnasen in dem Betätigungselement befestigt sind.The channel element in the actuator is closed by a rigid cover 68. The cover member 68 has an approximately oval shape with a circumferential side wall 70 which is disposed in the recess 66. The side wall has lateral webs, which are fastened with outwardly facing locking lugs in the actuating element.

Bei der Betätigung übt der Benutzer auf das Abdeckelement 68 mit einem Finger einen Druck aus, der über das Kanalelement, den Zuführkanal 38 und den Stutzen 20 weitergeleitet wird. Der Stutzen 20 leitet die Kraft auf das geschlossene Ventil (nicht dargestellt) weiter. Das Ventil öffnet und das Medium tritt aus. Das ausgetretene Medium sammelt sich in der Kammer 40 und übt eine Kraft auf das Grundelement 44 aus. Hierdurch wird der Kolben in dem Austrittskanal gegen die Kraft des Federschenkels 60 zurückgeschoben und gibt so an seinem vorderen Ende 52 die Austrittsöffnung für den Austritt des Mediums frei. Läßt der Druck auf das Betätigungselement nach, schließt das Ventil und das Federelement 60 drückt das Kolbenelement in seine Verschlußstellung.Upon actuation, the user exerts a pressure on the cover member 68 with a finger, which is passed through the channel member, the feed channel 38 and the nozzle 20. The nozzle 20 forwards the force to the closed valve (not shown). The valve opens and that Medium exits. The leaked medium accumulates in the chamber 40 and exerts a force on the base member 44. As a result, the piston is pushed back in the outlet channel against the force of the spring leg 60 and thus releases at its front end 52, the outlet opening for the escape of the medium. If the pressure on the actuating element leaves, the valve closes and the spring element 60 pushes the piston element into its closed position.

Claims (11)

  1. Dispensing head for a container having a valve for dispensing a fluid, which comprises the following:
    - a mounting body with an annular portion (12) and an actuating element (16) connected thereto which has a tube connector (20) arranged centrally in the annular portion,
    - a channel element (34) which has an outlet channel comprising a piston element (36) displaceably arranged therein, the outlet channel being connected to the tube connector (20) of the actuating element via a discharge channel (38),
    - the actuating element (16) having a resilient spring element (58), which bears against a rear end (56) of the piston element (36) and presses the front end (52) of the piston element (36) sealingly into the outlet aperture (54) of the outlet channel, and
    - the channel element has a chamber (40) around a shaft portion of the piston element (36), which is in direct connection with the discharge channel (22), the chamber (40) being defined at its rear end by a sealing element (42) connected to the piston element, which sealingly bears against the wall of the outlet channel,
    characterized in that
    - the spring element (60) comprises a tongue (60) configured integrally with the actuating element.
  2. Dispensing head according to Claim 1, characterised in that the diameter of the channel element tapers in the region of the outlet aperture in the shape of a truncated cone (54).
  3. Dispensing head according to Claim 2, characterised in that the piston element tapers at its front end according to the outlet aperture in the shape of a truncated cone (52).
  4. Dispensing head according to one of Claims 1 to 3, characterized in that the sealing element (42) of the piston element (36) is configured as a cup-shaped element, which has a bottom wall (44) located transversely to the piston element and a peripheral side wall (46) which faces in the direction of the front end of the piston element and sealingly bears against the chamber wall.
  5. Dispensing head according to one of Claims 1 to 4, characterised in that a cover element (68) is provided which is arranged in an aperture in the actuating element (16) and covers the channel element.
  6. Dispensing head according to Claim 5, characterised in that the cover element (68) forms an actuating surface which serves for the opening of the valve.
  7. Dispensing head according to one of Claims 1 to 6, characterised in that the channel element at its front end and/or in the region of the discharge channel is inserted into a corresponding aperture in the actuating element.
  8. Dispensing head according to one of Claims 1 to 7, characterised in that the actuating element has a front apron wall (24), in which the outlet aperture is provided, the apron wall having a latching projection (26) which is arranged before a first use above the mounting ring and, after the first actuation, engages behind a projection (28) on the annular portion.
  9. Dispensing head according to one of Claims 1 to 8, characterised in that, in a resting position, the valve of the container is closed and the piston element sealingly bears from the inside in the outlet aperture.
  10. Dispensing head according to Claim 9, characterised in that, in a dispensing position, the valve is opened by pressure on the dispensing head and the piston element is retracted from the outlet aperture by the pressure of the fluid in the outlet channel, in order to open said outlet aperture.
  11. Dispensing head according to Claim 10, characterised in that the outlet aperture and the retracted piston element are dimensioned such that the flow of emerging fluid is throttled at least to an extent that the fluid located in the outlet channel and the chamber forces back the piston element counter to the force of the spring element.
EP06005457A 2005-07-02 2006-03-17 Dispensing head for a container having a valve for dispensing a fluid Not-in-force EP1739032B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06005457T PL1739032T3 (en) 2005-07-02 2006-03-17 Dispensing head for a container having a valve for dispensing a fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005031027A DE102005031027B4 (en) 2005-07-02 2005-07-02 Dispensing head for a container with a valve for dispensing a medium

Publications (2)

Publication Number Publication Date
EP1739032A1 EP1739032A1 (en) 2007-01-03
EP1739032B1 true EP1739032B1 (en) 2007-11-28

Family

ID=36975338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06005457A Not-in-force EP1739032B1 (en) 2005-07-02 2006-03-17 Dispensing head for a container having a valve for dispensing a fluid

Country Status (4)

Country Link
EP (1) EP1739032B1 (en)
DE (2) DE102005031027B4 (en)
ES (1) ES2297778T3 (en)
PL (1) PL1739032T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201011144D0 (en) * 2010-07-01 2010-08-18 Rieke Corp Dispensers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913804A (en) * 1974-07-19 1975-10-21 Robert H Laauwe Aerosol valve actuator
US4182496A (en) * 1977-12-16 1980-01-08 Ethyl Products Company Actuator button for fluid dispenser
NL8801260A (en) * 1988-05-16 1989-12-18 Mobacc Bv NOZZLE FOR A SPRAY CAN.
FR2793425B1 (en) * 1999-05-10 2002-03-08 Oreal DISTRIBUTION HEAD AND CONTAINER THUS EQUIPPED
EP1295812A1 (en) * 2001-09-21 2003-03-26 Stoffel, Hans F. Self-closing dispensing head for aerosol containers
WO2003099706A1 (en) * 2002-05-23 2003-12-04 Cohen, Ben, Z. Medically accurate pump system
DE50306841D1 (en) * 2003-02-21 2007-05-03 Boehringer Ingelheim Micropart Dispenser for dispensing a liquid or pasty medium

Also Published As

Publication number Publication date
ES2297778T3 (en) 2008-05-01
EP1739032A1 (en) 2007-01-03
PL1739032T3 (en) 2008-08-29
DE502006000200D1 (en) 2008-01-10
DE102005031027A1 (en) 2007-01-04
DE102005031027B4 (en) 2009-06-10

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