EP2697131A1 - Dispensing head for a tube and tube having a dispensing head - Google Patents

Dispensing head for a tube and tube having a dispensing head

Info

Publication number
EP2697131A1
EP2697131A1 EP12715927.5A EP12715927A EP2697131A1 EP 2697131 A1 EP2697131 A1 EP 2697131A1 EP 12715927 A EP12715927 A EP 12715927A EP 2697131 A1 EP2697131 A1 EP 2697131A1
Authority
EP
European Patent Office
Prior art keywords
pressure chamber
discharge head
medium
outer housing
tube
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
EP12715927.5A
Other languages
German (de)
French (fr)
Other versions
EP2697131B1 (en
Inventor
Dominik Brall
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
Aptar Radolfzell 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 Aptar Radolfzell GmbH filed Critical Aptar Radolfzell GmbH
Publication of EP2697131A1 publication Critical patent/EP2697131A1/en
Application granted granted Critical
Publication of EP2697131B1 publication Critical patent/EP2697131B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • 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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/44—Closures
    • B65D35/46—Closures with valves
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
    • B65D47/2062—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem
    • B65D47/2068—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem in which the stem is lowered by the pressure of the contents and thereby opening the valve
    • 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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/04—Body construction made in one piece
    • B65D35/08—Body construction made in one piece from plastics material
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
    • B65D47/2062—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem
    • B65D47/2075—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem in which the stem is raised by the pressure of the contents and thereby opening the valve

Definitions

  • the invention relates to a discharge head for a tube for discharging medium from the tube with a flat outer housing with a receiving shaft for inserting and securing an outlet of the tube on the rear facing the tube and an outlet opening for discharging the medium on an opposite end face, with an interior space surrounded by walls of the outer housing, an annular wall section of the outer housing separating the receiving shaft from an annular region of the interior of the outer housing surrounding the annular wall section on the outside, with an outlet valve provided in the interior with a valve body and a valve seat and with a pressure chamber designed in such a way that pressurization of the medium contained therein, the valve body and the valve seat from a closed position to an opening position can be spaced from each other to a leakage of the medium from the pressure chamber through to allow the discharge opening, and with a medium path inside the housing, through which an inlet opening on the receiving shaft is connected to the pressure chamber.
  • the invention further relates to a tube with a discharge head, wherein the tube has an outlet with a reduced
  • Tubes and very simple discharge heads for this purpose are generally known in particular for receiving and delivering toothpaste.
  • the tubes used for this purpose have a usually provided with an external thread outlet, which has a substantially reduced diameter compared to the outer diameter of the tube.
  • the discharge head is therefore usually screwed on toothpaste tubes on this outlet.
  • pivotable protective cap is provided, which is locked when not in use in a the outlet opening of the discharge head closing position.
  • a discharge head for tubes is also known in which a pressure-controlled outlet valve is provided which automatically opens when the medium in the tube is pressurized and automatically closes when this pressurization ceases.
  • a protection against contamination of the medium can be achieved, which allows to use a tube with such a discharge head for receiving and dispensing preservative-free media.
  • the object of the invention is to develop a generic discharge head for a tube such that the disadvantages of the prior art are overcome.
  • this is achieved by a generic discharge head in which the medium path extends from the inlet opening through the annular region of the interior of the outer housing to the pressure chamber, so that the medium on the way from the inlet opening to the pressure chamber in sections in one direction flows, which has at least one directional component, which is directed against a plug-in direction of the outlet in the receiving recess.
  • the discharge head according to the invention has on opposite sides, on the one hand, the receiving shaft for the outlet of the tube and on the other the discharge opening.
  • the already mentioned insertion direction of the tube is defined.
  • This insertion direction refers to the positional displacement of the tube relative to the discharge head in the course of attachment of the tube.
  • the rotational position of the tube does not play for this Roller, so that even with a fastening of the tube by means of a thread, the insertion direction by definition runs in the direction of the threaded axis.
  • the outlet opening of the discharge head is provided on the opposite side of the rear side of the tube head and preferably such that it is suitable for a Med iu maustrag in the direction of insertion.
  • the attachment of the outlet nozzle of the tube takes place in the receiving shaft of the discharge head preferably via a form-fitting clamping connection, in which on the inside of the receiving shaft and on the outside of the outlet nozzle of the tube corresponding profilings are provided.
  • the aforementioned design with a thread is considered advantageous.
  • the core of the first aspect of the invention is that the medium path, which connects the at least one inlet opening with the pressure chamber and thus also the outlet opening, extends at least in sections through that annular area of the interior, which is bounded on the inside by the annular wall section of the receiving shaft. Consequently, the medium path is such that the medium flowing into the discharge head at the inlet opening is deflected and thus flows in phases opposite to the insertion direction or flows in a direction which has at least one direction component opposite to the insertion direction.
  • the Ringwandungsabterrorism the receiving shaft must not necessarily come into contact with the medium. Instead, external walls of the annular wall section can also be provided which delimit the flow path of the medium.
  • the construction mentioned leads to a considerable gain in space.
  • the medium Since the medium is deflected in the annular space surrounding the receiving shaft, it can be conveyed from here to the outside and then in the insertion direction to reach the pressure chamber. As a result, a large proportion of the interior of the outer housing for the medium path is not required, so that this space can be used elsewhere, in particular for receiving relevant parts of the exhaust valve. This makes it possible to design the discharge head in the desired flat design and still have sufficient space to accommodate the exhaust valve available.
  • the second aspect of the invention which is preferably implemented together with the first aspect of the invention, provides that the pressure chamber extends between an inner side of an end wall of the outer housing and a in the interior of the outer housing substantially parallel thereto arranged counter surface and that the medium path extends outwardly from the inlet opening with respect to the insertion direction of the outlet nozzle into the receiving recess, so that the medium coming from the inlet opening can flow into the pressure chamber only in an outer edge region.
  • the medium does not flow axially and without significant change of direction from the inlet opening of the discharge head to the outlet opening, but is conveyed radially outwards from the inlet opening in such a way that it can flow in from outside into the pressure chamber on the counter surface.
  • the discharge head for applying force to the valve body in the direction of the valve seat has a spring, said spring being at least partially disposed in the annular space of the interior.
  • the space is used for this spring, which surrounds the receiving shaft of the discharge head. Since thus comparatively long spring lengths can be realized, the adjustment of the opening behavior of the exhaust valve is particularly well and precisely possible.
  • the spring is designed as a helical spring and surrounds the receiving shaft at least in sections.
  • the annular walls of the receiving shaft or corresponding annular walls of an inner housing to be explained below can also be used to achieve a positional fixing of the spring transversely to the insertion direction.
  • an inner housing is arranged within the interior of the outer housing, the media path extending between outer walls of the inner housing and inner walls of the outer housing, and furthermore an inner space of the inner housing being sealed in a liquid-tight manner with respect to the medium path.
  • This inner housing fulfills several purposes. On the one hand, it can accommodate in its interior functional elements of the exhaust valve, which are protected by a liquid-tight construction of the inner housing from the environment. On the other hand, it can define the one or more media paths from the inlet opening to the pressure chamber with its outer contour and in interaction with the inside of the walls of the outer housing. By adapted to the inner contour of the outer housing shaping can be prevented that arise too large dead volumes in the media path, ie spaces in which remains medium and from which this medium after emptying the tube is no longer to remove.
  • the inner housing has a recess into which projects the annular wall of the outer housing. This depression makes it possible to maximize the internal volume of the inner housing.
  • the recess into which the annular wall portion of the outer housing is inserted can be used in the manner already mentioned above for supporting a valve coil spring.
  • the inner housing forms a pressure chamber delimiting counter surface on which the valve body is provided.
  • the mating surface is at least partially movable relative to a base section of the inner housing provided stationary with respect to the outer housing. This can be achieved in that the mating surface is guided displaceably on the base portion of the inner housing.
  • the mating surface consists of two different materials of different deformability. This makes it possible to firmly and connect the counter surface with the base portion and still achieve a mobility of the valve body.
  • an annular portion made of a material of higher deformability between an outer outer ring and the valve body of the counter surface is arranged, which are formed of a material of lower deformability.
  • the medium path is formed at least in sections by channels which are formed by recesses in the outer housing and / or in the inner housing and which are circumferentially closed by the other housing, said latter Channels preferably in the region of their confluence with the pressure chamber have an increase in their free cross-section.
  • the enlargement of this cross section allows the dead volumes low and yet to ensure that the medium flows into the pressure chamber over the entire circumference or at least over almost the entire circumference (> 50%). The formation of air bubbles is thereby effectively prevented.
  • the invention further relates to a tube with a erfindunswashen discharge head.
  • the tube has an outlet with reduced compared to a maximum tube diameter outside diameter. This outlet is inserted inserted in the insertion in the receiving shaft of the discharge head.
  • Figure 2 shows the discharge head in an enlarged
  • FIG. 3 shows the discharge head of Figure 2 in his
  • FIGS. 2 and 3 shows an exploded view of the discharge head of FIGS. 2 and 3.
  • FIG. 1 a shows the tube 10 according to the invention in a non-sectioned illustration and in the not yet assembled state of the dispensing head and FIG in a fully assembled state in a partially cutaway view.
  • the discharge head 30 has an outer housing 40, which is composed of an inner shell 42 and an outer shell 44. These are fixed by latching means 43 and secured against each other immovable to each other.
  • the inner shell 42 defines a central receiving shaft 32, which is surrounded by a ring wall 42 a of the inner shell 42.
  • an end wall 42 b is provided in the inlet openings 42 c are provided through which the medium can pass into the discharge head 30.
  • the receiving shaft 32 serves to receive the outlet nozzle 22 of the tube body 20. For this purpose, this is provided on the outside with a thickening 22a, which engages in a circumferential groove 42d on the annular wall section 42a.
  • a positive locking connection of the outlet nozzle 22 could engage in an embodiment, not shown, in a provided on the inside of the annular wall portion 42a internal thread.
  • the outer shell 44 has an outlet opening 44a, through which the medium can be discharged from the discharge head to an environment.
  • the inner shell 42 and the outer shell 44 together define an inner space 48 of the outer housing 40.
  • an inner housing 50 is provided within this inner space 48.
  • This has a base portion 52 and a mating surface portion 54. Together, the base portion 52 and the mating surface portion 54 close an interior 56 of the inner housing 50 liquid-tight. In this interior 56 reaches the intended use during operation no medium.
  • the base portion 52 has a shape similar to the lower shell 42. Thus, the base portion 52 in particular on walls 52 a, which define a recess into which the receiving shaft 32 is immersed.
  • the counter surface portion 54 is a component made of two different types of plastic.
  • An outside ring portion 54a and a central portion 54c are made of a plastic material which is difficult to deform, while an intermediate annular portion 54b is made of an easily deformable plastic, so that the central region 54c can be displaced in relation to the edge region 54a in and against the main direction 2.
  • a coil spring 58 supported by the recess 52a against a bottom surface of the base portion 52 and the center portion 54c of the mating surface portion 54 and a valve body 54d formed thereon toward the outlet port 44a and against a central portion 54c there provided inside valve surface 44b suppressed.
  • FIG. 2 shows the discharge head in an enlarged view in its closed position.
  • a media path 60, 62, 64, 66, 68 is provided which extends from the receiving shaft associated inlet openings 42c into the adjacent to the discharge opening 44a pressure chamber 70.
  • the media path initially extends between the recess 52a in the base section 52 on the one hand and the end wall 42b and the annular wall 42a of the inner shell 42 on the other hand into an annular region 49 of the inner space 48 of the outer housing 40.
  • channel sections 62 extend up to a bottom of the inner shell 42 and there through sections 64 radially outward to the cylindrical outer wall of the inner shell 42.
  • the media path then runs in axially aligned portions 66 further in the direction of the pressure chamber 70.
  • An end portion 68 of the medium path is funnel-shaped in particular from Figure 4 apparent Molded so that the medium can flow into the almost over the entire circumference of the pressure chamber 70 from the outside in this.
  • the media supply into the pressure chamber 70 from the outside ensures that reliably any air is discharged from the pressure chamber 70 through the discharge opening 44a. It is therefore not to be feared at the beginning of a discharge process that air pockets remain in the pressure chamber 70, which are compressed in the course of pressurization and expand abruptly and unexpectedly again when the exhaust valve opens.
  • the arrangement of the media path in said annulus 49 also allows the inner housing 50 to occupy most of the interior space 48 of the outer housing 40. Thus, in particular, there is enough room to arrange the spring 58 here.

Landscapes

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

Abstract

The invention relates to a dispensing head (30) for a tube (20), comprising a flat outer housing (40) having an accommodating shaft (32) for the insertion of an outlet port (22) of the tube (20) and an outlet opening (44a) having an interior (48) surrounded by walls of the outer housing (40), wherein an annular wall section (42a) of the outer housing (40) separates the accommodating shaft (32) from an annular area (49) of the interior (48) of the outer housing (40) that surrounds the annular wall section (42a) on the outside, comprising an outlet valve (54d, 44b) provided in the interior (48), the outlet valve having a valve body (54d) and a valve seat (44b) and a pressure chamber (70), which is designed in such a way that the valve body (54d) and the valve seat (44b) can be spaced from each other from a closed position to an open position by pressurization of the medium contained in the pressure chamber, in order to allow the medium to escape from the pressure chamber (70) through the discharge opening (44a), and comprising a medium path (60, 62, 64, 66, 68) within the housing (40), by means of which an inlet opening (42c) on the accommodating shaft is connected to the pressure chamber (70) in such a way that the medium flows on the path from the inlet opening (42c) to the pressure chamber (70) into the accommodating shaft (32) opposite an insertion direction (2) of the outlet port (22) in some sections.

Description

Austragkopf für eine Tube und Tube mit Austragkopf Anwendungsgebiet und Stand der Technik  Discharge head for a tube and tube with discharge head Field of application and state of the art
Die Erfindung betrifft einen Austragkopf für eine Tube zum Austrag von Medium aus der Tube mit einem flachen Außengehäuse mit einem Aufnahmeschacht zum Einstecken und Befestigen eines Auslassstutzens der Tube auf der zur Tube hin weisenden Rückseite und einer Auslassöffnung zum Austrag des Mediums auf einer gegenüberliegenden Stirnseite, mit einem von Wandungen des Außengehäuses umgebenen Innenraum, wobei ein Ringwandungsabschnitt des Außengehäuses den Aufnahmeschacht gegenüber einem den Ringwandungsabschnitt außenseitig umgebenden Ringbereich des Innenraums des Außengehäuses trennt, mit einem im Innenraum vorgesehenen Auslassventil mit einem Ventilkörper und einem Ventilsitz sowie mit einer Druckkammer, die derart ausgebildet ist, dass Druckbeaufschlagung des darin enthaltenen Mediums der Ventilkörper und der Ventilsitz aus einer Schließposition in eine Öffnungsposition gegeneinander beabstandet werden können, um einen Austritt des Mediums aus der Druckkammer durch die Austragöffnung zu gestatten, und mit einem Mediumpfad innerhalb des Gehäuses, durch den eine Einlassöffnung am Aufnahmeschacht mit der Druckkammer verbunden ist. Die Erfindung betrifft weiterhin auch eine Tube mit einem Austragkopf, wobei die Tube einen Auslassstutzen mit einem gegenüber einem maximalen Tubendurchmesser verringertem Außendurchmesser aufweist und wobei dieser Auslassstutzen in eine Einsteckrichtung in einem Aufnahmeschacht des Austragkopfes befestigt ist. The invention relates to a discharge head for a tube for discharging medium from the tube with a flat outer housing with a receiving shaft for inserting and securing an outlet of the tube on the rear facing the tube and an outlet opening for discharging the medium on an opposite end face, with an interior space surrounded by walls of the outer housing, an annular wall section of the outer housing separating the receiving shaft from an annular region of the interior of the outer housing surrounding the annular wall section on the outside, with an outlet valve provided in the interior with a valve body and a valve seat and with a pressure chamber designed in such a way that pressurization of the medium contained therein, the valve body and the valve seat from a closed position to an opening position can be spaced from each other to a leakage of the medium from the pressure chamber through to allow the discharge opening, and with a medium path inside the housing, through which an inlet opening on the receiving shaft is connected to the pressure chamber. The invention further relates to a tube with a discharge head, wherein the tube has an outlet with a reduced compared to a maximum diameter tube outer diameter and wherein said outlet is fixed in a direction of insertion in a receiving shaft of the discharge head.
Tuben und sehr einfache Austragköpfe hierfür sind insbesondere zur Aufnahme und zum Austrag von Zahnpasta allgemein bekannt. Die hierfür verwendeten Tuben weisen einen zumeist mit einem Außengewinde versehenen Auslassstutzen auf, der gegenüber dem Außendurchmesser der Tube einen wesentlich verringerten Durchmesser aufweist. Der Austragkopf wird demzufolge bei Zahnpastatuben meist auf diesen Auslassstutzen aufgeschraubt. Zum Schutz des in der Tube enthaltenen Mediums ist bei Zahnpastatuben üblicherweise eine am Austragkopf vorgesehen schwenkbewegliche Schutzkappe vorgesehen, die bei Nichtgebrauch in einer die Auslassöffnung des Austragkopfes verschließenden Position verrastet wird. Tubes and very simple discharge heads for this purpose are generally known in particular for receiving and delivering toothpaste. The tubes used for this purpose have a usually provided with an external thread outlet, which has a substantially reduced diameter compared to the outer diameter of the tube. The discharge head is therefore usually screwed on toothpaste tubes on this outlet. To protect the medium contained in the tube toothpaste tubes usually provided on the discharge head pivotable protective cap is provided, which is locked when not in use in a the outlet opening of the discharge head closing position.
Aus internem Stand der Technik der Anmelderin ist auch ein Austragkopf für Tuben bekannt, bei dem ein druckgesteuertes Auslassventil vorgesehen ist, welches bei Druckbeaufschlagung des Mediums in der Tube automatisch öffnet und bei Wegfall dieser Druckbeaufschlagung automatisch schließt. Hierdurch kann ein Schutz gegen Kontamination des Mediums erreicht werden, der es gestattet, eine Tube mit einem solchen Austragkopf zur Aufnahme und Abgabe von konservierungsmittelfreien Medien zu verwenden. From the applicant's internal state of the art, a discharge head for tubes is also known in which a pressure-controlled outlet valve is provided which automatically opens when the medium in the tube is pressurized and automatically closes when this pressurization ceases. As a result, a protection against contamination of the medium can be achieved, which allows to use a tube with such a discharge head for receiving and dispensing preservative-free media.
Bei der Entwicklung von Austragköpfen für Tuben mit einem solchen Ventil hat sich gezeigt, dass es schwierig ist, eine kompakte Bauweise zu erzielen. Eine solche kompakte Bauweise ist jedoch unter anderem aus ästhetischen Gründen und insbesondere im Falle von Tuben für kosmetische Produkte erforderlich. Weiterhin hat sich herausgestellt, dass bei der zentrischen Zuführung des Mediums in die Druckkammer die Gefahr besteht, dass Außenbereiche der Druckkammer während der Druckbeaufschlagung des Mediums in der Druckkammer noch Luft enthalten, welche beim Öffnen des Auslassventils schlagartig expandiert und dadurch ein ungewünscht plötzliches Austragen des Mediums bewirken. In the development of discharge heads for tubes with such a valve, it has been found that it is difficult to achieve a compact design to achieve. However, such a compact design is required, inter alia, for aesthetic reasons, and in particular in the case of tubes for cosmetic products. Furthermore, it has been found that in the centric feeding of the medium into the pressure chamber there is the danger that outer regions of the pressure chamber during the pressurization of the medium in the pressure chamber still contain air which expands abruptly when opening the exhaust valve and thereby an undesirably sudden discharge of the medium cause.
Aufgabe und Lösung Task and solution
Aufgabe der Erfindung ist es, einen gattungsgemäßen Austragkopf für eine Tube derart weiterzubilden, dass die Nachteile des Standes der Technik überwunden werden. The object of the invention is to develop a generic discharge head for a tube such that the disadvantages of the prior art are overcome.
Erfindungsgemäß wird dies nach einem ersten Aspekt der Erfindung durch einen gattungsgemäßen Austragkopf erzielt, bei dem der Mediumpfad sich von der Einlassöffnung durch den Ringbereich des Innenraums des Außengehäuses zur Druckkammer erstreckt, so dass das Medium auf dem Weg von der Einlassöffnung zur Druckkammer abschnittsweise in eine Richtung fließt, die zumindest eine Richtungskomponente aufweist, die entgegen eine Einsteckrichtung des Auslassstutzens in die Aufnahmeausnehmung gerichtet ist. According to a first aspect of the invention, this is achieved by a generic discharge head in which the medium path extends from the inlet opening through the annular region of the interior of the outer housing to the pressure chamber, so that the medium on the way from the inlet opening to the pressure chamber in sections in one direction flows, which has at least one directional component, which is directed against a plug-in direction of the outlet in the receiving recess.
Der erfindungsgemäße Austragkopf weist auf sich gegenüberliegenden Seiten zum einen den Aufnahmeschacht für den Auslassstutzen der Tube und zum anderen die Austragöffnung auf. Durch den Aufnahmeschacht wird die bereits genannte Einsteckrichtung der Tube definiert. Diese Einsteckrichtung bezieht sich auf die Positionsverlagerung der Tube gegenüber dem Austragkopf im Zuge der Befestigung der Tube. Die Drehstellung der Tube spielt hierfür keine Rolle, so dass auch bei einer Befestigung der Tube mittels eines Gewindes die Einsteckrichtung definitionsgemäß in Richtung der Gewindeachse verläuft. The discharge head according to the invention has on opposite sides, on the one hand, the receiving shaft for the outlet of the tube and on the other the discharge opening. Through the receiving shaft, the already mentioned insertion direction of the tube is defined. This insertion direction refers to the positional displacement of the tube relative to the discharge head in the course of attachment of the tube. The rotational position of the tube does not play for this Roller, so that even with a fastening of the tube by means of a thread, the insertion direction by definition runs in the direction of the threaded axis.
Die Auslassöffnung des Austragkopfes ist auf der der Rückseite gegenüberliegenden Stirnseite des Tubenkopfes vorgesehen und vorzugsweise so geartet, dass sie für einen Med iu maustrag in Richtung der Einsteckrichtung geeignet ist. The outlet opening of the discharge head is provided on the opposite side of the rear side of the tube head and preferably such that it is suitable for a Med iu maustrag in the direction of insertion.
Die Befestigung des Auslassstutzens der Tube erfolgt im Aufnahmeschacht des Austragkopfes vorzugsweise über eine formschlüssig wirkende Klemmverbindung, bei der an der Innenseite des Aufnahmeschachtes und an der Außenseite des Auslassstutzens der Tube korrespondierende Profilierungen vorgesehen sind. Auch die bereits genannte Gestaltung mit einem Gewinde wird als vorteilhaft angesehen. The attachment of the outlet nozzle of the tube takes place in the receiving shaft of the discharge head preferably via a form-fitting clamping connection, in which on the inside of the receiving shaft and on the outside of the outlet nozzle of the tube corresponding profilings are provided. The aforementioned design with a thread is considered advantageous.
Kern des ersten Aspekt der Erfindung ist, dass der Mediumpfad, der die mindestens eine Einlassöffnung mit der Druckkammer und somit auch der Auslassöffnung verbindet, sich zumindest abschnittsweise durch jenen Ringbereich des Innenraums erstreckt, der innenseitig durch den Ringwandungsabschnitt des Aufnahmeschachtes begrenzt wird. Demzufolge verläuft der Mediumpfad so, dass das Medium, welches an der Einlassöffnung in den Austragkopf einströmt, umgelenkt wird und somit phasenweise entgegen der Einsteckrichtung fließt oder in eine Richtung fließt, die zumindest eine Richtungskomponente entgegen der Einsteckrichtung aufweist. Der Ringwandungsabschnitt des Aufnahmeschachtes muss nicht zwingend in Kontakt mit dem Medium gelangen. Stattdessen können außenliegend des Ringwandungsabschnitts auch weitere Wandungen vorgesehen sein, die den Strömungspfad des Mediums begrenzen. Die genannte Bauweise führt zu einem erheblichen Raumgewinn. Da das Medium in den den Aufnahmeschacht umgebenden Ringraum umgelenkt wird, kann es von hier nach außen und dann in Einsteckrichtung weitergefördert werden, um die Druckkammer zu erreichen. Hierdurch wird ein großer Anteil des Innenraums des Außengehäuses für den Mediumpfad nicht benötigt, so dass dieser Raum anderweitig, insbesondere zur Aufnahme maßgeblicher Teile des Auslassventils genutzt werden kann. Dies gestattet es, den Austragkopf in der gewünschten flachen Bauweise auszugestalten und dennoch einen ausreichenden Raum zur Aufnahme des Auslassventils zur Verfügung stehen zu haben. The core of the first aspect of the invention is that the medium path, which connects the at least one inlet opening with the pressure chamber and thus also the outlet opening, extends at least in sections through that annular area of the interior, which is bounded on the inside by the annular wall section of the receiving shaft. Consequently, the medium path is such that the medium flowing into the discharge head at the inlet opening is deflected and thus flows in phases opposite to the insertion direction or flows in a direction which has at least one direction component opposite to the insertion direction. The Ringwandungsabschnitt the receiving shaft must not necessarily come into contact with the medium. Instead, external walls of the annular wall section can also be provided which delimit the flow path of the medium. The construction mentioned leads to a considerable gain in space. Since the medium is deflected in the annular space surrounding the receiving shaft, it can be conveyed from here to the outside and then in the insertion direction to reach the pressure chamber. As a result, a large proportion of the interior of the outer housing for the medium path is not required, so that this space can be used elsewhere, in particular for receiving relevant parts of the exhaust valve. This makes it possible to design the discharge head in the desired flat design and still have sufficient space to accommodate the exhaust valve available.
Der zweite Aspekt der Erfindung, der vorzugsweise gemeinsam mit dem ersten Aspekt der Erfindung realisiert ist, sieht vor, dass die Druckkammer sich zwischen einer Innenseite einer stirnseitigen Wandung des Außengehäuses und einer im Innenraum des Außengehäuses im Wesentlichen parallel hierzu angeordneten Gegenfläche erstreckt und dass der Mediumpfad sich von der Einlassöffnung bezogen auf die Einsteckrichtung des Auslassstutzens in den Aufnahmeausnehmung nach außen erstreckt, so dass das von der Einlassöffnung kommende Medium lediglich in einem äußeren Randbereich in die Druckkammer einströmen kann. Bei dieser Gestaltung ist demnach vorgesehen, dass das Medium nicht axial und ohne wesentliche Richtungsänderung von der Einlassöffnung des Austragkopfes zur Auslassöffnung strömt, sondern von der Einlassöffnung soweit radial nach außen gefördert wird, dass es an der Gegenfläche vorbei von außen in die Druckkammer einströmen kann. Von diesem äußeren Rand der Druckkammer strömt es dann weiter in Richtung des Zentrums der Druckkammer, wo die Auslassöffnung vorgesehen ist. Bezogen auf den ersten Aspekt der Erfindung ist es besonders von Vorteil, wenn der Austragkopf zur Kraftbeaufschlagung des Ventilkörpers in Richtung des Ventilsitzes eine Feder aufweist, wobei diese Feder zumindest teilweise im Ringraum des Innenraums angeordnet ist. Somit wird für diese Feder der Bauraum genutzt, der den Aufnahmeschacht des Austragkopfes umgibt. Da sich somit vergleichsweise lange Federlängen realisieren lassen, ist die Einstellung des Öffnungsverhaltens des Auslassventils so besonders gut und präzise möglich. Dabei ist besonders von Vorteil, wenn die Feder als Schraubenfeder ausgebildet ist und den Aufnahmeschacht zumindest abschnittsweise umgibt. Somit können die Ringwandungen des Aufnahmeschachtes oder korrespondierende Ringwandungen eines nachfolgend noch erläuterten Innengehäuses auch genutzt werden, um eine Lagefixierung der Feder quer zur Einsteckrichtung zu erzielen. The second aspect of the invention, which is preferably implemented together with the first aspect of the invention, provides that the pressure chamber extends between an inner side of an end wall of the outer housing and a in the interior of the outer housing substantially parallel thereto arranged counter surface and that the medium path extends outwardly from the inlet opening with respect to the insertion direction of the outlet nozzle into the receiving recess, so that the medium coming from the inlet opening can flow into the pressure chamber only in an outer edge region. In this configuration, it is accordingly provided that the medium does not flow axially and without significant change of direction from the inlet opening of the discharge head to the outlet opening, but is conveyed radially outwards from the inlet opening in such a way that it can flow in from outside into the pressure chamber on the counter surface. From this outer edge of the pressure chamber, it then flows further in the direction of the center of the pressure chamber, where the outlet opening is provided. Based on the first aspect of the invention, it is particularly advantageous if the discharge head for applying force to the valve body in the direction of the valve seat has a spring, said spring being at least partially disposed in the annular space of the interior. Thus, the space is used for this spring, which surrounds the receiving shaft of the discharge head. Since thus comparatively long spring lengths can be realized, the adjustment of the opening behavior of the exhaust valve is particularly well and precisely possible. It is particularly advantageous if the spring is designed as a helical spring and surrounds the receiving shaft at least in sections. Thus, the annular walls of the receiving shaft or corresponding annular walls of an inner housing to be explained below can also be used to achieve a positional fixing of the spring transversely to the insertion direction.
Von besonderem Vorteil ist es weiterhin, wenn innerhalb des Innenraums des Außengehäuses ein Innengehäuse angeordnet ist, wobei sich der Medienpfad zwischen Außenwandungen des Innengehäuses und Innenwandungen des Außengehäuses erstreckt und wobei weiterhin ein Innenraum des Innengehäuses gegenüber dem Mediumpfad flüssigkeitsdicht verschlossen ist. It is furthermore of particular advantage if an inner housing is arranged within the interior of the outer housing, the media path extending between outer walls of the inner housing and inner walls of the outer housing, and furthermore an inner space of the inner housing being sealed in a liquid-tight manner with respect to the medium path.
Dieses Innengehäuse erfüllt mehrere Zwecke. Zum einen kann es in seinen Innenraum Funktionselemente des Auslassventils beherbergen, welche durch eine flüssigkeitsdichte Ausbildung des Innengehäuses gegenüber der Umgebung geschützt sind. Zum anderen kann es mit seiner Außenkontur und im Zusammenspiel mit der Innenseite der Wandungen des Außengehäuses den oder die Medienpfade von der Einlassöffnung zur Druckkammer definieren. Durch eine an die Innenkontur des Außengehäuses angepasste Formgebung kann dabei verhindert werden, dass zu große Totvolumina im Medienpfad entstehen, also Räume, in denen Medium verbleibt und aus denen diesen Medium nach Entleerung der Tube nicht mehr zu entfernen ist. Insbesondere kann vorgesehen sein, dass das Innengehäuse eine Vertiefung aufweist, in die die Ringwandung des Außengehäuses hineinragt. Durch diese Vertiefung wird es möglich, das Innenvolumen des Innengehäuses zu maximieren. Außerdem kann die Vertiefung, in die der Ringwandungsabschnitt des Außengehäuses eingeschoben ist, in oben schon genannter Art und Weise zur Stützung einer Ventilschraubenfeder verwendet werden. This inner housing fulfills several purposes. On the one hand, it can accommodate in its interior functional elements of the exhaust valve, which are protected by a liquid-tight construction of the inner housing from the environment. On the other hand, it can define the one or more media paths from the inlet opening to the pressure chamber with its outer contour and in interaction with the inside of the walls of the outer housing. By adapted to the inner contour of the outer housing shaping can be prevented that arise too large dead volumes in the media path, ie spaces in which remains medium and from which this medium after emptying the tube is no longer to remove. In particular, it can be provided that the inner housing has a recess into which projects the annular wall of the outer housing. This depression makes it possible to maximize the internal volume of the inner housing. In addition, the recess into which the annular wall portion of the outer housing is inserted, can be used in the manner already mentioned above for supporting a valve coil spring.
Vorzugsweise bildet das Innengehäuse eine die Druckkammer begrenzende Gegenfläche, an der der Ventilkörper vorgesehen ist. Dabei ist die Gegenfläche zumindest partiell gegenüber einem ortsfest zum Außengehäuse vorgesehenen Basisabschnitt des Innengehäuses beweglich. Dies kann dadurch erzielt werden, dass die Gegenfläche verschieblich am Basisabschnitt des Innengehäuses geführt ist. Bevorzugt ist allerdings, wenn die Gegenfläche aus zwei verschiedenen Materialien unterschiedlicher Verformbarkeit besteht. Hierdurch wird es möglich, die Gegenfläche mit dem Basisabschnitt fest und zu verbinden und dennoch eine Beweglichkeit des Ventilkörpers zu erzielen. Hierzu ist vorzugsweise ein ringförmiger Abschnitt aus einem Material höherer Verformbarkeit zwischen einem außenliegenden Außenring und dem Ventilkörper der Gegenfläche angeordnet, die aus einem Material geringerer Verformbarkeit ausgebildet sind. Preferably, the inner housing forms a pressure chamber delimiting counter surface on which the valve body is provided. In this case, the mating surface is at least partially movable relative to a base section of the inner housing provided stationary with respect to the outer housing. This can be achieved in that the mating surface is guided displaceably on the base portion of the inner housing. However, it is preferred if the mating surface consists of two different materials of different deformability. This makes it possible to firmly and connect the counter surface with the base portion and still achieve a mobility of the valve body. For this purpose, preferably an annular portion made of a material of higher deformability between an outer outer ring and the valve body of the counter surface is arranged, which are formed of a material of lower deformability.
Insbesondere in Hinblick auf den zweiten Aspekt der Erfindung wird es als besonders vorteilhaft angesehen, wenn der Mediumpfad zumindest abschnittsweise durch Kanäle gebildet ist, die durch Vertiefungen im Außengehäuse und/oder im Innengehäuse gebildet sind und die vom jeweils anderen Gehäuse umfänglich abgeschlossen sind, wobei diese Kanäle vorzugsweise im Bereich ihrer Einmündung in die Druckkammer eine Vergrößerung ihres freien Querschnitts aufweisen. Die Vergrößerung dieses Querschnitts gestattet es, die Totvolumina gering zu halten und dennoch zu gewährleisten, dass das Medium über den gesamten Umfang oder zumindest über fast den gesamten Umfang (>50%) in die Druckkammer einströmt. Die Bildung von Luftblasen wird hierdurch wirksam verhindert. Particularly with regard to the second aspect of the invention, it is considered to be particularly advantageous if the medium path is formed at least in sections by channels which are formed by recesses in the outer housing and / or in the inner housing and which are circumferentially closed by the other housing, said latter Channels preferably in the region of their confluence with the pressure chamber have an increase in their free cross-section. The enlargement of this cross section allows the dead volumes low and yet to ensure that the medium flows into the pressure chamber over the entire circumference or at least over almost the entire circumference (> 50%). The formation of air bubbles is thereby effectively prevented.
Die Erfindung betrifft weiterhin auch eine Tube mit einem erfindunsgemäßen Austragkopf. Dabei weist die Tube einen Auslassstutzen mit gegenüber einem maximalen Tubendurchmesser verringertem Außendurchmesser auf. Dieser Auslassstutzen ist in Einsteckrichtung eingeschoben im Aufnahmeschacht des Austragkopfes befestigt. The invention further relates to a tube with a erfindunsgemäßen discharge head. In this case, the tube has an outlet with reduced compared to a maximum tube diameter outside diameter. This outlet is inserted inserted in the insertion in the receiving shaft of the discharge head.
Kurzbeschreibung der Zeichnungen Brief 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 erläutert wird. Dabei zeigen: 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 is explained with reference to the figures. Showing:
Figur 1 a und 1 b eine erfindungsgemäße Tube mit erfindungsgemäßem Austragkopf, 1 a and 1 b a tube according to the invention with inventive discharge head,
Figur 2 den Austragkopf in einer vergrößerten Figure 2 shows the discharge head in an enlarged
Darstellung in seiner Schließstellung,  Representation in its closed position,
Figur 3 den Austragkopf der Figur 2 in seiner Figure 3 shows the discharge head of Figure 2 in his
Öffnungsstellung und  Opening position and
Figur 4 eine Explosionsdarstellung des Austragkopfes der Fig. 2 und 3. 4 shows an exploded view of the discharge head of FIGS. 2 and 3.
Detaillierte Beschreibung des Ausführungsbeispiels Figuren 1 a und 1 b zeigen eine erfindungsgemäße Tube 10 mit einem Tubenkörper 20 und einem erfindungsgemäßen Austragkopf 30. Dabei zeigt Figur 1 a die erfindungsgemäße Tube 10 in einer nicht geschnittenen Darstellung sowie im noch nicht montierten Zustand des Austragkopfes und Figur 1 b die erfindungsgemäße Tube in einem fertigmontierten Zustand in teilgeschnittener Ansicht. Wie anhand von Figur 1 b zu ersehen ist, weist der Austragkopf 30 ein Außengehäuse 40 auf, welches aus einer Innenschale 42 und einer Außenschale 44 zusammengesetzt ist. Diese sind über Rastmittel 43 fest und gegeneinander unbeweglich aneinander gesichert. Die Innenschale 42 definiert einen zentrischen Aufnahmeschacht 32, der von einer Ringwandung 42a der Innenschale 42 umgeben wird. Am Grund des Aufnahmeschachtes 32 ist eine Stirnwandung 42b vorgesehen in der Einlassöffnungen 42c vorgesehen sind, durch die hindurch das Medium in den Austragkopf 30 gelangen kann. Der Aufnahmeschacht 32 dient der Aufnahme des Auslassstutzens 22 des Tubenkörpers 20. Dieser ist hierfür außenseitig mit einer Verdickung 22a vorgesehen, die in eine umlaufende Nut 42d an dem Ringwandungsabschnitt 42a eingreift. Statt einer solchen formschlüssigen Rastverbindung könnte der Auslassstutzen 22 bei einer nicht dargestellten Ausführungsform auch in ein an der Innenseite des Ringwandungsabschnitts 42a vorgesehenes Innengewinde eingreifen. Detailed description of the embodiment 1 a and 1 b show a tube 10 according to the invention with a tube body 20 and a dispensing head 30 according to the invention. FIG. 1 a shows the tube 10 according to the invention in a non-sectioned illustration and in the not yet assembled state of the dispensing head and FIG in a fully assembled state in a partially cutaway view. As can be seen with reference to FIG. 1 b, the discharge head 30 has an outer housing 40, which is composed of an inner shell 42 and an outer shell 44. These are fixed by latching means 43 and secured against each other immovable to each other. The inner shell 42 defines a central receiving shaft 32, which is surrounded by a ring wall 42 a of the inner shell 42. At the bottom of the receiving shaft 32, an end wall 42 b is provided in the inlet openings 42 c are provided through which the medium can pass into the discharge head 30. The receiving shaft 32 serves to receive the outlet nozzle 22 of the tube body 20. For this purpose, this is provided on the outside with a thickening 22a, which engages in a circumferential groove 42d on the annular wall section 42a. Instead of such a positive locking connection of the outlet nozzle 22 could engage in an embodiment, not shown, in a provided on the inside of the annular wall portion 42a internal thread.
Die Außenschale 44 weist eine Austrittsöffnung 44a auf, durch die hindurch das Medium aus dem Austragkopf an eine Umgebung abgegeben werden kann. Die Innenschale 42 und die Außenschale 44 definieren gemeinsam einen Innenraum 48 des Außengehäuses 40. Innerhalb dieses Innenraums 48 ist ein Innengehäuse 50 vorgesehen. Dieses weist einen Basisabschnitt 52 sowie ein Gegenflächenabschnitt 54 auf. Gemeinsam verschließen der Basisabschnitt 52 und der Gegenflächenabschnitt 54 einen Innenraum 56 des Innengehäuses 50 flüssigkeitsdicht. In diesen Innenraum 56 gelangt bestimmungsgemäß im Betrieb keinerlei Medium. Der Basisabschnitt 52 weist eine Formgebung auf, die der Unterschale 42 ähnelt. So weist der Basisabschnitt 52 insbesondere Wandungen 52a auf, die eine Vertiefung definieren, in die der Aufnahmeschacht 32 eintaucht. Bei dem Gegenflächenabschnitt 54 handelt es sich um ein Bauteil aus zwei verschiedenen Kunststoffsorten. Ein außenseitiger Ringabschnitt 54a sowie ein zentrischer Abschnitt 54c sind aus einem schwer verformbaren Kunststoff gefertigt, während ein dazwischenliegender ringförmiger Bereich 54b aus einem leicht verformbaren Kunststoff gefertigt ist, so dass der zentrische Bereich 54c gegenüber dem Randbereich 54a in und entgegen der Hauptrichtung 2 verlagerbar ist. Innerhalb des Innenraums 56 des Innengehäuses 50 ist eine Schraubenfeder 58 vorgesehen, die durch die Vertiefung 52a gestützt an einer Bodenfläche des Basisabschnitts 52 und am zentrischen Abschnitt 54c des Gegenflächenabschnitts 54 anliegt und diesen samt eines daran angeformten Ventilkörpers 54d in Richtung der Auslassöffnung 44a und gegen eine dort vorgesehene innenseitige Ventilfläche 44b drückt. The outer shell 44 has an outlet opening 44a, through which the medium can be discharged from the discharge head to an environment. The inner shell 42 and the outer shell 44 together define an inner space 48 of the outer housing 40. Within this inner space 48, an inner housing 50 is provided. This has a base portion 52 and a mating surface portion 54. Together, the base portion 52 and the mating surface portion 54 close an interior 56 of the inner housing 50 liquid-tight. In this interior 56 reaches the intended use during operation no medium. The base portion 52 has a shape similar to the lower shell 42. Thus, the base portion 52 in particular on walls 52 a, which define a recess into which the receiving shaft 32 is immersed. The counter surface portion 54 is a component made of two different types of plastic. An outside ring portion 54a and a central portion 54c are made of a plastic material which is difficult to deform, while an intermediate annular portion 54b is made of an easily deformable plastic, so that the central region 54c can be displaced in relation to the edge region 54a in and against the main direction 2. Within the interior 56 of the inner housing 50, there is provided a coil spring 58 supported by the recess 52a against a bottom surface of the base portion 52 and the center portion 54c of the mating surface portion 54 and a valve body 54d formed thereon toward the outlet port 44a and against a central portion 54c there provided inside valve surface 44b suppressed.
Anhand der Figuren 2 und 3 soll die Funktionsweise des Austragkopfes beschrieben werden. Figur 2 zeigt den Austragkopf in einer vergrößerten Darstellung in seiner Schließstellung. Damit Medium vom Aufnahmeschacht 32 bis zur Auslassöffnung 44a gelangen kann, ist ein Medienpfad 60, 62, 64, 66, 68 vorgesehen, der sich von dem Aufnahmeschacht zugeordneten Einlassöffnungen 42c bis in die an die Austragöffnung 44a angrenzende Druckkammer 70 erstreckt. Ausgehend von einem umlaufenden Ringbereich 60 erstrecken sich der Medienpfad zunächst zwischen der Vertiefung 52a im Basisabschnitt 52 einerseits und der Stirnwandung 42b und der Ringwandung 42a der Innenschale 42 andererseits in einen Ringbereich 49 des Innenraums 48 des Außengehäuses 40. Diese Kanalabschnitte 62 verlaufen bis zu einem Grund der Innenschale 42 und dort durch Abschnitte 64 radial nach außen bis zur zylindrischen Außenwandung der Innenschale 42. Der Medienpfad verläuft dann in axial ausgerichteten Abschnitten 66 weiter in Richtung der Druckkammer 70. Ein Endabschnitt 68 des Mediumpfades ist trichterförmig in insbesondere aus Figur 4 ersichtlicher Weise geformt, so dass das Medium nahezu über den vollständigen Umfang der Druckkammer 70 von außen in diese einströmen kann. With reference to Figures 2 and 3, the operation of the discharge head will be described. Figure 2 shows the discharge head in an enlarged view in its closed position. In order for the medium to pass from the receiving shaft 32 to the outlet opening 44a, a media path 60, 62, 64, 66, 68 is provided which extends from the receiving shaft associated inlet openings 42c into the adjacent to the discharge opening 44a pressure chamber 70. Starting from a circumferential annular region 60, the media path initially extends between the recess 52a in the base section 52 on the one hand and the end wall 42b and the annular wall 42a of the inner shell 42 on the other hand into an annular region 49 of the inner space 48 of the outer housing 40. These channel sections 62 extend up to a bottom of the inner shell 42 and there through sections 64 radially outward to the cylindrical outer wall of the inner shell 42. The media path then runs in axially aligned portions 66 further in the direction of the pressure chamber 70. An end portion 68 of the medium path is funnel-shaped in particular from Figure 4 apparent Molded so that the medium can flow into the almost over the entire circumference of the pressure chamber 70 from the outside in this.
Wenn nun durch Kraftbeaufschlagung des Tubenkörpers 20 das darin enthaltene Medium unter Druck gesetzt wird, so pflanzt sich dieser Druck durch den Mediumpfad und seine Abschnitte 60, 62, 64, 66, 68 bis in die Druckkammer 70 fort. Dort führt bei geschlossenem Auslassventil dieser Druck zu einer partiellen Verformung des Gegenflächenabschnitts 54 und daher zu einer Beabstandung des Ventilkörpers 54d vom Ventilsitz 44b. Hierdurch wird die Auslassöffnung 44a freigegeben und das unter Druck gesetzte Medium kann in Hauptrichtung 2 entweichen. Now, if the medium contained therein is pressurized by application of force to the tube body 20, this pressure propagates through the medium path and its sections 60, 62, 64, 66, 68 into the pressure chamber 70. There, when the outlet valve is closed, this pressure leads to a partial deformation of the mating surface portion 54 and therefore to a spacing of the valve body 54d from the valve seat 44b. As a result, the outlet opening 44a is released and the pressurized medium can escape in the main direction 2.
Durch die Medienzufuhr in die Druckkammer 70 von außen ist gewährleistet, dass zuverlässig jegliche Luft aus der Druckkammer 70 durch die Austragöffnung 44a hindurch ausgetragen wird. Es ist zu Beginn eines Austragvorgangs somit nicht zu befürchten, dass Lufttaschen in der Druckkammer 70 verbleiben, welche im Zuge der Druckbeaufschlagung komprimiert werden und sich schlagartig und unerwartet wieder ausdehnen, sobald das Auslassventil öffnet. Durch die Anordnung des Medienpfades im genannten Ringraum 49 ist darüber hinaus ermöglicht, dass das Innengehäuse 50 einen Großteil des Innenraums 48 des Außengehäuses 40 einnehmen kann. Somit ist insbesondere genug Raum vorhanden, um hier die Feder 58 anzuordnen. The media supply into the pressure chamber 70 from the outside ensures that reliably any air is discharged from the pressure chamber 70 through the discharge opening 44a. It is therefore not to be feared at the beginning of a discharge process that air pockets remain in the pressure chamber 70, which are compressed in the course of pressurization and expand abruptly and unexpectedly again when the exhaust valve opens. The arrangement of the media path in said annulus 49 also allows the inner housing 50 to occupy most of the interior space 48 of the outer housing 40. Thus, in particular, there is enough room to arrange the spring 58 here.

Claims

Patentansprüche Austragkopf (30) für eine Tube (20) zum Austrag von Medium aus der Tube (20) mit  Discharge head (30) for a tube (20) for discharging medium from the tube (20) with
einem flachen Außengehäuse (40) mit einem Aufnahmeschacht (32) zum Einstecken und Befestigen eines Auslassstutzens (22) der Tube (20) auf der zur Tube (20) hin weisenden Rückseite und einer Auslassöffnung (44a) zum Austrag des Mediums auf einer gegenüberliegenden Stirnseite,  a flat outer housing (40) having a receiving shaft (32) for inserting and securing an outlet nozzle (22) of the tube (20) on the rear facing the tube (20) and an outlet opening (44a) for discharging the medium on an opposite end face .
einem von Wandungen des Außengehäuses (40) umgebenen Innenraum (48), wobei ein Ringwandungsabschnitt (42a) des Außengehäuses (40) den Aufnahmeschacht (32) gegenüber einem den Ringwandungsabschnitt (42a) außenseitig umgebenden Ringbereich (49) des Innenraums (48) des Außengehäuses (40) trennt,  an inner space (48) surrounded by walls of the outer housing (40), wherein an annular wall section (42a) of the outer housing (40) surrounds the receiving shaft (32) with respect to a ring region (49) of the inner space (48) of the outer housing surrounding the outer side of the annular wall section (42a) (40) separates,
einem im Innenraum (48) vorgesehenen Auslassventil (54d, 44b) mit einem Ventilkörper (54d) und einem Ventilsitz (44b) sowie mit einer Druckkammer (70), die derart ausgebildet ist, dass durch Druckbeaufschlagung des darin enthaltenen Mediums der Ventilkörper (54d) und der Ventilsitz (44b) aus einer Schließposition in eine Öffnungsposition gegeneinander beabstandet werden können, um eine Austritt der Mediums aus der Druckkammer (70) durch die Austragöffnung (44a) zu gestatten, und  an outlet valve (54d, 44b) provided in the interior space (48) with a valve body (54d) and a valve seat (44b) and with a pressure chamber (70) which is designed in such a way that the valve body (54d) is pressurized by the medium contained therein and the valve seat (44b) can be spaced from each other from a closed position to an open position to allow leakage of the medium from the pressure chamber (70) through the discharge port (44a), and
einem Mediumpfad (60, 62, 64, 66, 68) innerhalb des Gehäuses (40), durch den eine Einlassöffnung (42c) am Aufnahmeschacht mit der Druckkammer (70) verbunden ist, dadurch gekennzeichnet, dass  a medium path (60, 62, 64, 66, 68) within the housing (40), through which an inlet opening (42c) on the receiving shaft is connected to the pressure chamber (70), characterized in that
der Mediumpfad (60, 62, 64, 66, 68) sich von der Einlassöffnung (42c) durch den Ringbereich (49) des Innenraums (48) des Außengehäuses (40) zur Druckkammer (70) erstreckt, so dass das Medium auf dem Weg von der Einlassöffnung (42c) zur Druckkammer (70) abschnittsweise in eine Richtung fließt, die zumindest eine Richtungskomponente aufweist, die entgegen einer Einsteckrichtung (2) des Auslassstutzens (22) in die Aufnahmeausnehmung (32) gerichtet ist. the medium path (60, 62, 64, 66, 68) extends from the inlet opening (42c) through the annular area (49) of the Inner space (48) of the outer housing (40) to the pressure chamber (70) extends, so that the medium on the way from the inlet opening (42c) to the pressure chamber (70) flows in sections in a direction having at least one directional component, which opposes a direction of insertion (2) of the outlet nozzle (22) is directed into the receiving recess (32).
Austragkopf nach Anspruchl oder nach dem Oberbegriff von Anspruch 1 , Discharge head according to claim 1 or according to the preamble of claim 1,
dadurch gekennzeichnet, dass  characterized in that
die Druckkammer (70) sich zwischen einer Innenseite einer stirnseitigen Wandung des Außengehäuses (40) und einer im Innenraum (48) des Außengehäuses (40) im Wesentlichen parallel hierzu angeordneten Gegenfläche (54b, 54c) erstreckt und  the pressure chamber (70) extends between an inner side of an end wall of the outer housing (40) and a counter surface (54b, 54c) arranged substantially parallel thereto in the inner space (48) of the outer housing (40)
der Mediumpfad (60, 62, 64, 66, 68) sich von der Einlassöffnung (42c) bezogen auf die Einsteckrichtung (2) des Auslassstutzens (22) in die Aufnahmeausnehmung (32) nach außen erstreckt und von dort in die Druckkammer (70) mündet, so dass das von der Einlassöffnung (42c) kommende Medium lediglich in einem äußeren Randbereich in die Druckkammer (70) einströmen kann.  the medium path (60, 62, 64, 66, 68) extends outwardly from the inlet opening (42c) towards the insertion direction (2) of the outlet nozzle (22) into the receiving recess (32) and from there into the pressure chamber (70) opens, so that the coming of the inlet port (42c) medium can flow into the pressure chamber (70) only in an outer edge region.
Austragkopf nach einem der vorstehenden Ansprüche, Discharge head according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
der Austragkopf (30) zur Kraftbeaufschlagung des Ventilkörpers (54d) in Richtung des Ventilsitzes (44b) eine Feder (58) aufweist, wobei diese Feder (58) zumindest teilweise im Ringraum (49) des Innenraums (48) angeordnet ist.  the discharge head (30) for applying force to the valve body (54d) in the direction of the valve seat (44b) has a spring (58), said spring (58) at least partially in the annular space (49) of the interior (48) is arranged.
4. Austragkopf nach Anspruch 3, dadurch gekennzeichnet, dass 4. discharge head according to claim 3, characterized in that
die Feder (58) als Schraubenfeder ausgebildet ist und den Aufnahmeschacht (32) zumindest abschnittsweise umgibt.  the spring (58) is designed as a helical spring and surrounds the receiving shaft (32) at least in sections.
5. Austragkopf nach einem der vorstehenden Ansprüchen, 5. Discharge head according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
innerhalb des Innenraums (48) des Außengehäuses (40) ein Innengehäuse (50) angeordnet ist, wobei sich der Medienpfad (60, 62, 64, 66, 68) zwischen Wandungen des Innengehäuses (50) und Wandungen des Außengehäuse (40) erstreckt und wobei ein Innenraum (56) des Innengehäuses (50) gegenüber dem Mediumpfad (60, 62, 64, 66, 68) flüssigkeitsdicht verschlossen ist.  inside the interior (48) of the outer housing (40) an inner housing (50) is arranged, wherein the media path (60, 62, 64, 66, 68) between walls of the inner housing (50) and walls of the outer housing (40) extends and wherein an inner space (56) of the inner housing (50) opposite the medium path (60, 62, 64, 66, 68) is sealed liquid-tight.
6. Austragkopf nach Anspruch 5, 6. discharge head according to claim 5,
dadurch gekennzeichnet, dass  characterized in that
das Innengehäuse (50) eine Vertiefung aufweist, in die die Ringwandungsabschnitte (42a) des Außengehäuses (40) hineinragt.  the inner housing (50) has a recess into which the annular wall sections (42a) of the outer housing (40) protrude.
7. Austragkopf nach Anspruch 5 oder 6, 7. discharge head according to claim 5 or 6,
dadurch gekennzeichnet, dass  characterized in that
das Innengehäuse (50) eine die Druckkammer (70) begrenzte Gegenfläche (54b, 54c) bildet, an der der Ventilkörper (54d) vorgesehen ist, wobei die Gegenfläche (54b, 54c) zumindest partiell gegenüber einem ortsfest zum Außengehäuse (40) vorgesehenen Basisabschnitt (52) des Innengehäuses (50) beweglich ist, wobei vorzugsweise die Gegenfläche (54b, 54c) aus zwei verschiedenen Materialien unterschiedlicher Verformbarkeit besteht.  the inner housing (50) forms a counter surface (54b, 54c) delimiting the pressure chamber (70), on which the valve body (54d) is provided, wherein the counter surface (54b, 54c) is at least partially opposite a base portion provided stationary with respect to the outer housing (40) (52) of the inner housing (50) is movable, wherein preferably the counter surface (54b, 54c) consists of two different materials of different deformability.
8. Austragkopf nach einem der vorstehenden Ansprüche, 8. Discharge head according to one of the preceding claims,
dadurch gekennzeichnet, dass der Mediumpfad (60, 62, 64, 66, 68) zumindest abschnittsweise durch Kanäle gebildet ist, die durch Vertiefungen (52d) im Außengehäuse und/oder im Innengehäuse (50) gebildet sind und die vom jeweils anderen Gehäuse (40) umfänglich abgeschlossen sind, wobei die Kanäle (52d) im Bereich ihrer Einmündung in die Druckkammer (70) eine Vergrößerung der Querschnittsfläche aufweisen. characterized in that the medium path (60, 62, 64, 66, 68) is at least partially formed by channels which are formed by recesses (52d) in the outer housing and / or in the inner housing (50) and which are circumferentially closed by the respective other housing (40) , wherein the channels (52d) in the region of their confluence with the pressure chamber (70) have an enlargement of the cross-sectional area.
9. Tube (20) mit Austragkopf (30), wobei die Tube (20) einen Auslassstutzen (22) mit gegenüber einem maximalen Tubendurchmesser verringertem Außendurchmesser aufweist und wobei dieser Auslassstutzen (22) in eine Einsteckrichtung (2) in einem Aufnahmeschacht (32) des Austragkopfes (30) befestigt ist, dadurch gekennzeichnet, dass 9. tube (20) with discharge head (30), wherein the tube (20) has an outlet nozzle (22) with a reduced outer diameter compared to a maximum tube diameter and wherein said outlet nozzle (22) in a plug-in direction (2) in a receiving shaft (32) the discharge head (30) is fixed, characterized in that
der Austragkopf (30) nach einem der vorstehenden Ansprüche ausgebildet ist.  the discharge head (30) is designed according to one of the preceding claims.
EP12715927.5A 2011-04-14 2012-04-13 Closure with valve for a pliable tubular container Active EP2697131B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011007396A DE102011007396A1 (en) 2011-04-14 2011-04-14 Discharge head for a tube and tube with discharge head
PCT/EP2012/056793 WO2012140205A1 (en) 2011-04-14 2012-04-13 Dispensing head for a tube and tube having a dispensing head

Publications (2)

Publication Number Publication Date
EP2697131A1 true EP2697131A1 (en) 2014-02-19
EP2697131B1 EP2697131B1 (en) 2016-06-29

Family

ID=45998299

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Application Number Title Priority Date Filing Date
EP12715927.5A Active EP2697131B1 (en) 2011-04-14 2012-04-13 Closure with valve for a pliable tubular container

Country Status (8)

Country Link
US (1) US9085409B2 (en)
EP (1) EP2697131B1 (en)
JP (1) JP6042408B2 (en)
KR (1) KR101908670B1 (en)
CN (1) CN103764511B (en)
BR (1) BR112013026223A2 (en)
DE (1) DE102011007396A1 (en)
WO (1) WO2012140205A1 (en)

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Also Published As

Publication number Publication date
JP2014514218A (en) 2014-06-19
BR112013026223A2 (en) 2020-10-27
JP6042408B2 (en) 2016-12-14
US20140048570A1 (en) 2014-02-20
KR101908670B1 (en) 2018-10-16
EP2697131B1 (en) 2016-06-29
DE102011007396A1 (en) 2012-10-18
KR20140016956A (en) 2014-02-10
US9085409B2 (en) 2015-07-21
WO2012140205A1 (en) 2012-10-18
CN103764511A (en) 2014-04-30
CN103764511B (en) 2016-03-09

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