EP0648180B1 - Dispenser for pasty materials - Google Patents

Dispenser for pasty materials Download PDF

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Publication number
EP0648180B1
EP0648180B1 EP93915857A EP93915857A EP0648180B1 EP 0648180 B1 EP0648180 B1 EP 0648180B1 EP 93915857 A EP93915857 A EP 93915857A EP 93915857 A EP93915857 A EP 93915857A EP 0648180 B1 EP0648180 B1 EP 0648180B1
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EP
European Patent Office
Prior art keywords
inner housing
housing
outer housing
dispenser according
dispenser
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Expired - Lifetime
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EP93915857A
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German (de)
French (fr)
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EP0648180A1 (en
Inventor
Alfred Von Schuckmann
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Individual
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Individual
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    • 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
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container

Definitions

  • the invention relates to a dispenser for dispensing pasty masses, such as toothpaste, with an outer housing with an open top and a closed bottom, in the latter an air inlet valve opening at negative pressure in the outer housing is arranged, further one from the outer housing upwardly projecting inner housing is provided, which has an actuating surface and a mouthpiece opening on its head piece, via which actuating surface the inner housing can be pressed against spring pressure into the outer housing sealed against it, so that under this actuation a transport piston migrating in the inner housing in the direction of the mouthpiece opening due to an overpressure of the same built up on the back, the mass pushes in front of it.
  • a dispenser for dispensing pasty masses such as toothpaste
  • a dispenser of this type is known from DE-PS 421 447.
  • the transport piston is moved according to an overpressure built up on the rear of the transport piston when actuated and there generated in a zone on the back of the same.
  • the inner housing designed as a cup, for example containing mustard, has a centrally located hole.
  • a sleeve as a counter-piston under the bottom of the cup.
  • the subject of DE-PS 30 44 439 is a dispenser with an outer housing and inner housing guided therein.
  • the upper end of the cantilevered inner housing forms a mouthpiece opening with an adjacent actuating surface.
  • the inner housing is supported on the bottom of the dispenser by means of a compression spring.
  • the dispenser carries a so-called climbing pole, on which a transport piston is supported by a one-way locking mechanism.
  • FR-A-2 510 071 there is the proposal on a generic dispenser to generate the air pressure at the headpiece of the dispenser having a mouthpiece opening and an actuating surface.
  • the head piece has a dome-shaped, resilient membrane, which can be pressed into a recess in the head piece while reducing the volume of its interior.
  • the compressed air generated in this way is routed behind the transport piston via a central pipeline, which also acts as a guide for a transport piston. It emerges via a transverse channel in the base area, driving the transport piston in the direction of the mouthpiece opening.
  • a dispenser is known, around the centrally suspended receiving chamber of which a squeeze body is arranged, the jacket wall of which can be compressed into a flatter shape so as to drive a transport piston in the direction of the mouthpiece opening of the dispenser.
  • the air overpressure generated in the vicinity of the tubular receiving chamber over almost the entire length of the dispenser is connected to the latter via the end of the receiving chamber which is open at the bottom.
  • the invention has set itself the task of structurally simpler construction of a generic type and still functionally reliable.
  • the inner housing be designed as a sleeve open to the bottom of the outer housing, the bottom of the outer housing can be removed and the seal of the inner housing by means of a seal with the bottom of the outer housing firmly connected, protruding into the inner housing.
  • the feed takes place via an "airlift” and no longer via a vacuum situation interspersed with mass.
  • the air overpressure is built up by approaching the rear side of the transport piston to the counter-piston fixed to the housing, the space between the two pistons being connectable to the outside air, that is to say the atmosphere, by means of a valve which opens when the distance between the pistons increases.
  • the valve immediately allows air equalization to occur when the appropriate distance is increased, ie the volume previously given is added to air.
  • the compressibility of the enclosed air also leads to a welcome increase and deceleration of the mass output. It is not thrown out in an uncontrolled manner.
  • the invention further proposes that the counter-piston sits on a base of an outer housing, relative to which an inner housing can be displaced against spring loading in such a way that the base moves into the lower end of the inner housing which projects with its actuating surface above the upper edge of the outer housing.
  • the inner housing is usefully used to expand the functionality by forming the head piece, containing the mouthpiece opening and the actuating surface.
  • a compression spring is arranged between the lower edge of the inner housing and the bottom of the outer housing. This automatically results in the starting position for the next delivery stroke.
  • the base and base of the outer housing can be screwed onto the lower end of the housing jacket wall.
  • This not only has a fundamental advantage with regard to the formation of a gate that enables the insertion of the inner housing, but also that of the gentle screwing in of the counter-piston. His lips cannot turn over, as could be the case, for example, with a purely linear feed and not yet overlapping rotary movement.
  • the screwing on forms, moreover, a type of coordination familiar to the consumer, so that the donor is accepted for this reason as well.
  • the relevant spring abutment is designed in such a way that the end of the compression spring on the inner housing side is covered by an annular guide piece.
  • the latter can be used at least for the partial formation of a spring chamber in that the cross section of the guide piece is U-shaped and the lower edge of the inner housing rests on the U-web. It also proves to be advantageous that the lower edge of the inner housing is pressed by the compression spring against a stop of the outer housing. This results in a basic position that always recurs.
  • the stop continues in longitudinal guide ribs for the inner housing; in other words: the longitudinal ribs end on a common transverse plane of the dispenser to form the stop.
  • valve closure body of the valve is connected to the piston ring via webs.
  • the valve and piston ring are one structural unit.
  • a design of even independent importance results on a cartridge-shaped inner housing for use in a dispenser according to claim 1, in that a wall section protruding above the transport piston forms the cylinder space for a counter-piston which can be inserted there from the lower end.
  • the inner housing can be implemented in the form of a refill pack, so that such a dispenser can be used again and again.
  • Andokken is optimized by a funnel-shaped counter-piston inlet section at the lower edge of the sleeve-shaped housing wall.
  • the inner housing is designed as a sleeve open to the bottom of the outer housing, the bottom of the outer housing is removable and that the seal of the inner housing by an open End of the sleeve wall of the inner housing with the bottom of the outer housing connecting bellows.
  • the bellows can be molded in one piece onto the lower edge of the inner housing by using the restoring force of this material.
  • a solution is advantageous in that the bellows is created as a separate component. It has proven to be advantageous for the air inlet valve to sit on a base overflowed by the inner housing, which base forms a holding projection for the upper edge of the separately designed bellows.
  • the bellows can already be assigned to the base with a certain preload. It is also favorable that the base is formed from the bottom of a screw cap, on which bottom the lower edge of the bellows is supported. Finally it turns out as advantageous that the bellows is designed as a bellows and is the return spring of the inner housing.
  • the dispenser Sp shown is realized as a standing device. It has a long cylindrical outer housing 1. This accommodates an inner housing 2 which is axially longitudinally guided therein.
  • the inner housing 2 is a sleeve-shaped structure which contains pasty mass 3 to be dispensed.
  • the sleeve-shaped inner housing 2 has a cup-shaped shape, so it is open at one end. The opening-side end points downwards.
  • the other, closed end of the inner housing 2 forms a lateral mouthpiece opening 4 with a molded-on tamper-evident closure 5.
  • the tamper-evident closure 5 tapers and, after breaking off by reversing insertion into the mouthpiece opening 4, can possibly function as a sealing plug.
  • An actuating surface 6 is located to the side of the mouthpiece opening 4.
  • the latter is part of a head piece 7, formed by the end of the inner housing 2 that projects freely above the outer housing 1.
  • the direction of actuation is indicated by arrow P in FIG.
  • the dispensing mechanism M effects a gradual displacement of a transport piston 8. This pushes with its front 9 the pasty mass 3 in the dispensing direction, that is, in the direction of the mouthpiece opening 4. This direction is indicated by arrow x.
  • the displacement of the transport piston 8 takes place via air pressure loading, specifically as a result of an air overpressure built up on the back of the transport piston 8 when actuated.
  • the pressure-loaded rear side of the transport piston bears the reference number 10.
  • the zone of the excess air pressure generated is designated by D.
  • the excess air pressure is built up by bringing said rear side 10 of the transport piston 8 closer to a stationary, i.e. counter-piston fixed to the housing 11.
  • the latter protrudes sealingly into the end of the inner housing 2 there of the transport piston 8 downwardly projecting wall section 2 'of the housing wall of the inner housing 2 remains.
  • This wall section thus creates a cylinder space 12 for the counter-piston 11 of the dispenser mechanism M of the dispenser Sp which can be retracted from the lower end in the case of assembly or subsequent assembly.
  • a valve V is assigned to the counter-piston 11. Via this there is a connection between the space 12 or cylinder space 12 and the atmosphere.
  • the valve V opens when the distance between the transport piston 8 and the counter-piston 11 is increased. Via this path, which is open to the outside air or atmosphere, the space 12 is increased by the volume of the mass 3 dispensed balanced by air.
  • the valve V acts like a check valve.
  • the counter-piston 11 forms the upper end of a base 13, which starts directly or indirectly from the outer housing 1.
  • the base 13 is an integral part of a base 14 of the dispenser Sp.
  • the base 13 / base 14 unit is screwed to the lower end of the casing wall 15 of the dispenser Sp.
  • the bottom 14 continues peripherally in a raised ring wall 16.
  • the latter forms a cap and carries an internal thread, which interacts with a corresponding external thread on the housing jacket wall 15.
  • the annular wall 16 is overlaid on the upper side by a circumferential covering bead 17.
  • the latter is also integrally formed on the housing jacket wall 15 of the outer housing 1.
  • annular collar 18 that extends concentrically to the annular wall 16 and extends inside the wall of the outer housing 1.
  • the latter has a greater axial length than the peripheral annular wall 16, and exceeds its length by about half to double measure.
  • the base 13 is designed as a recess which extends radially at a distance from the ring collar 18 and which ends with a horizontal cover 19 on the mouth opening side.
  • the cover 19 is framed peripherally by a piston ring, forming the counter-piston 11 mentioned.
  • the flexible or elastic piston ring engages with an inside clip bead 20 in an adapted annular groove 21 below the plane of the cover 19.
  • the cover 19 and piston ring thus form the counter-piston 11 In the basic position, only the opposing piston 11 projects, ie the upper end of the retraction, into the cylinder space 12 formed by the wall section 2 '.
  • the flexible material of the piston ring opens up a further development in that it forms the valve closure body 22 of the valve V.
  • the latter has semi-spherical or conical shape and is directed downwards. Its surface cooperates with a valve seat surface 23.
  • This valve seat surface 23 is realized by the upper edge of an air passage opening 24 in the ceiling 19 of the base 13.
  • the downward opening of the base 13 functions as an air duct.
  • the centrally located valve closure member is connected to the ring piston via webs 25.
  • the webs are designed as curved, horizontally aligned radial webs. They have an S-shaped course. A total of three webs 25 arranged at equal angles are realized.
  • the inner ends engage on a node plate 26 carrying the valve closure body 22, in which the valve closure body 23 is rooted centrally.
  • Said retraction has a cylindrical shape and its outer diameter clearly decreases compared to the inside diameter of the inner housing 2.
  • the described piston ring of the counter-piston 11 projects into the intermediate space.
  • the inner housing 2 is in the direction of its stop-limited basic position shown in FIG. 1 under spring loading.
  • a compression spring 27 used in the area of the dispenser mechanism M is used for this purpose. It is a helical compression spring. It holds the dispenser head in such a sufficient board position that its head piece 7 protrudes far beyond the upper, retracted edge 28 of the outer housing 1. The retracted position results from FIG. 3.
  • the compression spring 27 extends between the lower edge 29 of the inner housing 2 and the bottom 14 of the outer housing 1.
  • the cylindrical helical plane of the compression spring 27 is practically aligned with the cylindrical, elongated wall plane of the inner housing 2.
  • the upper end turn of the compression spring 27 does not occur immediately against the lower edge 29 of the inner housing; the inner housing end of the compression spring 27 is rather covered by an annular guide piece 30.
  • This has a U-shaped cross section.
  • the U-opening points in the direction of the bottom 14.
  • the U-shaped guide piece is of such a length that it is also in the Figure 1 apparent basic position at least with its outer U-leg does not leave an overlapping projection to the ring collar 18 of the bottom 14. Said leg leads on the inner wall of this ring collar, while the other U-leg finds its guidance on the outer surface of the cylindrical, downwardly open retraction of the base 13. In this way, a spring chamber 31 is created for the compression spring 27.
  • the lower edge 29 of the wall section 2 ′ or of the inner housing 2 is supported on the upper side of the horizontal U-web 32 of the guide piece 30.
  • the protruding position of the head piece 7, which defines the basic position, is stop-limited. This is done in such a way that the lower edge 29 of the inner housing 2 is pressed by the compression spring 27 against a stop 33 of the outer housing 1. With regard to this stop 33, there are the downward-facing, beveled ends of a plurality of guide ribs 34 on the inside of the cylindrical inner housing 2.
  • the strip-like longitudinal guide ribs are particularly clear from FIG. 4 and provide only a small guide surface between the leading outer housing 1 of the dispenser Sp and the guided inner housing 2 of the same. The aforementioned slope of the front ends converges in the direction of delivery (arrow x).
  • the funnel has such an inlet width that the usually existing, projecting sealing lips 36 of the two pistons, 8, 11 can be gently constricted against their resilience without the risk of a change. That brings density.
  • the head piece 7 can be covered with a protective cap 37 when not in use.
  • the latter is in plug or screw connection with the outer housing 1.
  • the base 14 is unscrewed and a new refill cartridge is inserted. This is conveniently done with the dispenser head pointing downwards.
  • the counter-piston 11 arrives in the region of the wall section 2 'by means of the docking assignment. It closes the cylinder chamber 12.
  • the dispenser Sp according to the second exemplary embodiment has an identical structure as far as the basic principle of the positive air pressure driving the transport piston 8 is concerned.
  • the reference numerals are used analogously, in part without repetitions of text, and the text is therefore also largely readable for the second exemplary embodiment.
  • a bellows B now occurs instead of the counter-piston 11 fixed to the housing. It is a bellows which can be compressed in the direction of the arrow P and which adjoins the lower edge 29 of the inner housing 2.
  • the bellows can be made in one piece with the sleeve-shaped structure of the inner housing 2, which forms a refill cartridge, in that its jacket wall, ie wall section 2 ', continues downward over the lower edge 29 in the direction of the base 14.
  • the lower edge 38 of the bellows B is sealed against the corresponding top of the bottom 14.
  • the sealing effect can be generated from the elasticity of the bellows-forming material. This can be done using the internal pressure, it being advantageous for the end fold 39 of the bellows there to be pressed against said upper side.
  • the terminal fold 39 can, as shown, be made wider, using an even larger area and a larger area for the effective internal pressure.
  • the inner end edge of this fold 39 ends in front of the base 13, which is also present in this embodiment, of the bottom which has been turned up to a cap 14.
  • the cap is also implemented here as a screw cap 40.
  • the bottom seal is marked with a.
  • a corresponding seal is also present between the lower edge 29 of the wall section 2 'of the inner housing 2 and the bellows B adjoining at the bottom.
  • This seal bears the reference symbol b. It is located between the flat underside of the lower edge 29 and the corresponding upper edge 41 of the bellows B. This upper edge 41 is a horizontal step. Following this horizontal step, the bellows B merges into a plug-in projection 42 with which it projects into the lower, open end of the respective refill cartridge.
  • the outer wall of the plug-in projection 42 is cylindrical. It lies sealingly against the corresponding cylindrical inner surface of zone D which generates the excess air pressure.
  • the projection 42 is concentric around the central base 13 and is tapered in the direction of the cylindrical jacket wall of this base 13, while maintaining a continuous wall thickness.
  • the horizontal ring web 43 thus obtained is used to secure the bellows B plugged onto the base 13.
  • the involvement of this fuse on the socle side is such that a holding projection 44 lies above the top ceiling 19 of the base 13 on the jacket wall side.
  • It is molded onto the base and realized as a circumferential ring rib, the outward-facing end edge of which converges rotationally symmetrically upwards, so that the ring web 43 can be pulled open easily.
  • the upper side of the ring web 43 comes into contact with the flat lower side of the holding projection 44.
  • the bellows can have the corresponding preload. It is held captive at 13.
  • valve V in the area of the horizontal ceiling 19.
  • This is also an inlet valve, which is now simply a plug-in type formed rubber or plastic tab is formed, which overlaps the centrally located air passage opening 24 in the ceiling 19.
  • the ceiling occupies a lower position, ie the wall of the base 13 extends significantly beyond the top of the ceiling 19.
  • a collar 46 circumscribing a pot cavity 45 is created.
  • the opening of the pot cavity 45 is closed by a clip-on cap 47. It is centrally perforated.
  • the corresponding holes have the reference symbol 48.
  • the cap 47 protects the valve body and secures it against falling out.
  • An annular gap 49 remains between the inside of the ring web 43 and the outer wall of the base 13. This connects the zone D to the annular interior 50 of the bellows B.
  • the screw cap 40 lies outside the bellows receiving space with the top of the base 14 against the corresponding end face 51 of the outer housing 1. This creates a seal c or better screw limitation.
  • the base 13 has an opening lying in the direction of the base of the dispenser Sp.
  • the dispenser Sp When the dispenser Sp is equipped, a force is exerted on the head piece 7 in the direction of the arrow P in order to dispense its contents in portions.
  • the base 13 overflows through the inner housing 2, but now not in the sense of a relative displacement between the cylinder and a counter-piston, but in the sense of a volume reduction in the zone D of the dispenser which builds up the excess air pressure. This can be done by running through the entire available stroke or by going through a partial stroke of the same.
  • a maximum compression is shown in FIG. 6 in that the folds of the bellows B lie on one another in an ossified manner. The volume of zone D is reduced there. The portion in the bellows can breathe through the annular gap 49.
  • the compressed, enclosed air exerts pressure on the rear side 10 of the transport piston 8.
  • the latter pushes mass 3 from the mouthpiece opening 4 strand-shaped.
  • the actuation takes place against the restoring force of the bellows, which acts as a compression spring and is sealed off from the outside.
  • a certain slight sagging movement of the pasty mass 3 and the transport piston 8 has an advantageous side effect in that they suck in a protruding residual protruding mass of the strand via the mouthpiece opening 4. Otherwise, the air cushion is secured by the valve V to prevent the air from escaping, because the axial distance which decreases between the rear 10 and the top of the base 14 creates such a high air cushion that the flap valve closes tightly against the valve seat surface formed by the edge of the air passage opening 24 is pressed.
  • the air equalization is effected to the extent of the mass volume delivered. Having returned to its stop-limited basic position, the inner housing 2 can be used for the next delivery stroke, etc.
  • the base 14 forming part of the screw cap 40 is unscrewed and a new refill cartridge is inserted. This is conveniently done with the dispenser head pointing downwards.
  • the bellows B By inserting or unscrewing the screw cap 40, the bellows B, when formed separately, is docked to the cartridge or to the wall section 2 '.
  • Zone D is hermetically sealed. A pre-compression in zone D which already occurs when the projection 42 occurs contributes to the formation of a pressure cushion supply. The dispenser is ready to use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Noodles (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

A dispenser (Sp) for pasty materials (3), such as tooth paste, has a head piece (7) with an outlet (4) and an actuating surface (6). A transport piston (8) gradually wanders under air pressure in the direction of the outlet (4) and pushes the material (3) before it with its front side (9). In order to obtain a simple design and a reliable operation of the dispenser, the transport piston (8) is moved by an air overpressure (zone D) that accumulates behind the transport piston (8) when the dispenser is actuated.

Description

Die Erfindung bezieht sich auf einen Spender zur Ausgabe pastöser Massen, wie beispielsweise Zahnpasta, mit einem Außengehäuse mit einer offenen Oberseite und einem geschlossenen Boden, wobei in letzterem ein sich bei Unterdruck im Außengehäuse öffnendes Lufteinlaß-Ventil angeordnet ist, wobei weiter ein aus dem Außengehäuse nach oben vorstehendes Innengehäuse vorgesehen ist, welches an seinem Kopfstück eine Betätigungsfläche und eine Mundstücköffnung aufweist, über welche Betätigungsfläche das Innengehäuse entgegen Federdruck in das diesem gegenüber abgedichtete Außengehäuse eindrückbar ist, so daß unter dieser Betätigung ein über einen im Innengehäuse in Richtung der Mundstücköffnung wandernder Transportkolben zufolge eines rückseitig desselben aufgebauten Luftüberdrucks die Masse vor sich herschiebt.The invention relates to a dispenser for dispensing pasty masses, such as toothpaste, with an outer housing with an open top and a closed bottom, in the latter an air inlet valve opening at negative pressure in the outer housing is arranged, further one from the outer housing upwardly projecting inner housing is provided, which has an actuating surface and a mouthpiece opening on its head piece, via which actuating surface the inner housing can be pressed against spring pressure into the outer housing sealed against it, so that under this actuation a transport piston migrating in the inner housing in the direction of the mouthpiece opening due to an overpressure of the same built up on the back, the mass pushes in front of it.

Ein Spender dieser Art ist durch die DE-PS 421 447 bekannt. Dort wird der Transportkolben zufolge eines bei Betätigung rückseitig des Transportkolbens aufgebauten und dort in einer Zone an der Rückseite desselben erzeugten Luftüberdrucks bewegt. Zum Durchtritt der Luft weist das als Becher gestaltete, beispielsweise Senf enthaltende Innengehäuse ein zentral gelegenes Loch auf. Unter dem Boden des Bechers befindet sich eine Manschette als Gegenkolben. Unter Eindrükken des vorstehenden Innengehäuses fährt die Manschette, an der Innenwandung des Außengehäuses abgedichtet geführt, in Richtung einer einen Zylinderraum bodenseitig abteilenden, gehäusefesten Querwand des Spenders. Dies geschieht entgegen Federwirkung. In der Querwand befindet sich ein Lufteinlaß-Ventil.A dispenser of this type is known from DE-PS 421 447. There, the transport piston is moved according to an overpressure built up on the rear of the transport piston when actuated and there generated in a zone on the back of the same. To allow the air to pass through, the inner housing designed as a cup, for example containing mustard, has a centrally located hole. There is a sleeve as a counter-piston under the bottom of the cup. When the protruding inner housing is pressed in, the sleeve, guided in a sealed manner on the inner wall of the outer housing, moves in the direction of a transverse wall of the dispenser which is fixed to the housing and divides a cylinder space on the bottom. This happens against spring action. There is an air inlet valve in the transverse wall.

Ein anderer Spender dieser Art ist durch die DE-AS 12 10 149 bekannt. Das Kopfstück ist dort ein kollabierbarer, balgartiger Dom, welcher bei der Rückstellbewegung durch Unterdruck den Transportkolben via Füllstandssäule nachzieht. Die Rückstellbewegung ist federunterstützt.Another donor of this type is known from DE-AS 12 10 149. The headpiece there is a collapsible, bellows-like dome, which pulls the transport piston via the level column when it is reset by negative pressure. The return movement is spring-assisted.

Durch die US-PS 32 68 123 ist es bekannt, Mundstücköffnung und Betätigungsfläche an einem starren, entgegen Federbelastung verschiebbaren Kopfstück auszubilden.From US-PS 32 68 123 it is known to form the mouthpiece opening and actuating surface on a rigid head piece which can be displaced against spring loading.

Gegenstand der DE-PS 30 44 439 ist ein Spender mit Außengehäuse und darin geführtem Innengehäuse. Das obere Ende des freiragenden Innengehäuses bildet eine Mundstücköffnung aus mit danebenliegender Betätigungsfläche. Das Innengehäuse ist bodenseitig des Spenders mittels einer Druckfeder abgestützt. Im Zentrum trägt der Spender eine sogenannte Kletterstange, an der sich ein Transportkolben über ein einseitig wirkendes Gesperre abgestützt führt.The subject of DE-PS 30 44 439 is a dispenser with an outer housing and inner housing guided therein. The upper end of the cantilevered inner housing forms a mouthpiece opening with an adjacent actuating surface. The inner housing is supported on the bottom of the dispenser by means of a compression spring. In the center, the dispenser carries a so-called climbing pole, on which a transport piston is supported by a one-way locking mechanism.

Aus der FR-A-2 510 071 existiert an einem gattungsgemäßen Spender der Vorschlag, den Luftüberdruck am eine Mundstücköffnung und eine Betätigungsfläche aufweisenden Kopfstück des Spenders zu erzeugen. Das Kopfstück trägt dazu eine domartig ausgewölbte, rückstellfähige Membran, welche sich in eine Vertiefung des Kopfstückes unter Volumenverringerung ihres Innenraumes eindrücken läßt. Die so erzeugte Druckluft wird über eine zentrale Rohrleitung, welche zugleich als Führung für einen Transportkolben fungiert, hinter den Transportkolben geleitet. Sie tritt dabei über einen Querkanal im Bodenbereich, den Transportkolben in Richtung der Mundstücköffnung treibend, aus.From FR-A-2 510 071 there is the proposal on a generic dispenser to generate the air pressure at the headpiece of the dispenser having a mouthpiece opening and an actuating surface. For this purpose, the head piece has a dome-shaped, resilient membrane, which can be pressed into a recess in the head piece while reducing the volume of its interior. The compressed air generated in this way is routed behind the transport piston via a central pipeline, which also acts as a guide for a transport piston. It emerges via a transverse channel in the base area, driving the transport piston in the direction of the mouthpiece opening.

Aus der GB-A-981 552 ist ein Spender bekannt, um dessen zentral eingehängte Aufnahmekammer ein Quetschkörper angeordnet ist, dessen Mantelwand sich in eine flachere Form zusammendrücken läßt, um so einen Transportkolben in Richtung der Mundstücköffnung des Spenders zu treiben. Der im Umfeld der rohrartigen Aufnahmekammer auf nahezu ganzer Länge des Spenders erzeugte Luftüberdruck steht über das unten offene Ende der Aufnahmekammer mit dieser in Verbindung.From GB-A-981 552 a dispenser is known, around the centrally suspended receiving chamber of which a squeeze body is arranged, the jacket wall of which can be compressed into a flatter shape so as to drive a transport piston in the direction of the mouthpiece opening of the dispenser. The air overpressure generated in the vicinity of the tubular receiving chamber over almost the entire length of the dispenser is connected to the latter via the end of the receiving chamber which is open at the bottom.

In Kenntnis dieser Vorgaben hat sich die Erfindung die Aufgabe gestellt, einen Spender der gattungsgemäßen Art baulich einfacher und trotzdem funktionssicherer auszubilden.Knowing these specifications, the invention has set itself the task of structurally simpler construction of a generic type and still functionally reliable.

Gelöst ist die Aufgabe durch die in den Ansprüchen 1 und 13 angegebene Erfindung.The object is achieved by the invention specified in claims 1 and 13.

Die übrigen Ansprüche sind vorteilhafte Weiterbildungen des gattungsgemäßen Spenders.The remaining claims are advantageous developments of the generic dispenser.

Zufolge solcher Ausgestaltungen ist ein gattungsgemäßer Spender vereinfachten Aufbaues und erhöhten Gebrauchswerts erzielt: Hierzu wird vorgeschlagen, daß das Innengehäuse als zum Boden des Außengehäuse hin offene Hülse ausgebildet ist, der Boden des Außengehäuses abnehmbar ist und die Abdichtung des Innengehäuses durch einen mit dem Boden des Außengehäuses fest verbundenen, in das Innengehäuse ragenden Gegenkolben erfolgt. Der Vorschub geschieht über eine "Luftbrücke" und nicht mehr über eine von Masse durchsetzte Unterdrucksituation. Weiter wird vorgeschlagen, daß der Luftüberdruck aufgebaut ist durch Annäherung der Rückseite des Transportkolbens an den gehäusefesten Gegenkolben, wobei der Raum zwischen beiden Kolben durch ein sich bei Vergrößerung des Abstandes der Kolben öffnendes Ventil mit der Außenluft - sprich Atmosphäre - in Verbindung bringbar ist. Das Ventil läßt sofort mit Einsetzen der entsprechenden Abstands-Vergrößerung den Luftausgleich entstehen, d.h. das zuvor ausgegebene Volumen an Masse wird an Luft ergänzt. Die Kompressibilität der eingeschlossenen Luft führt dabei auch zu einem willkommenen Ansteigen und Abbremsen der Ausgabe der Masse. Sie wird nicht unkontrolliert ausgeschleudert. Weiter bringt die Erfindung den Vorschlag, daß der Gegenkolben auf einem Sokkel eines Außengehäuses sitzt, relativ zu welchem ein Innengehäuse entgegen Federbelastung derart verschiebbar ist, daß der Sockel in das Unterende des mit seiner Betätigungsfläche über den oberen Rand des Außengehäuses überstehenden Innengehäuses einfährt. Insofern ist das Innengehäuse sinnvoll in Funktionserweiterung genutzt, indem es das Kopfstück bildet, enthaltend Mundstücköffnung und Betätigungsfläche. Um zu einer bequemen Betätigung zu gelangen, ist eine Druckfeder zwischen unterem Rand des Innengehäuses und Boden des Außengehäuses angeordnet. So ergibt sich jeweils automatisch wieder die Ausgangsstellung für den nächsten Ausgabehub.As a result of such designs, a generic dispenser of simplified construction and increased utility value is achieved: For this purpose, it is proposed that the inner housing be designed as a sleeve open to the bottom of the outer housing, the bottom of the outer housing can be removed and the seal of the inner housing by means of a seal with the bottom of the outer housing firmly connected, protruding into the inner housing. The feed takes place via an "airlift" and no longer via a vacuum situation interspersed with mass. It is further proposed that the air overpressure is built up by approaching the rear side of the transport piston to the counter-piston fixed to the housing, the space between the two pistons being connectable to the outside air, that is to say the atmosphere, by means of a valve which opens when the distance between the pistons increases. The valve immediately allows air equalization to occur when the appropriate distance is increased, ie the volume previously given is added to air. The compressibility of the enclosed air also leads to a welcome increase and deceleration of the mass output. It is not thrown out in an uncontrolled manner. The invention further proposes that the counter-piston sits on a base of an outer housing, relative to which an inner housing can be displaced against spring loading in such a way that the base moves into the lower end of the inner housing which projects with its actuating surface above the upper edge of the outer housing. In this respect, the inner housing is usefully used to expand the functionality by forming the head piece, containing the mouthpiece opening and the actuating surface. In order to achieve a convenient actuation, a compression spring is arranged between the lower edge of the inner housing and the bottom of the outer housing. This automatically results in the starting position for the next delivery stroke.

Baulich erweist es sich sodann als vorteilhaft, daß Boden und Sockel des Außengehäuses an das untere Ende der Gehäusemantelwand anschraubbar sind. Das hat nicht nur grundsätzlichen Vorteil im Hinblick auf die Bildung einer das Einsetzen des Innengehäuses ermöglichenden Pforte, sondern auch zugleich den des schonenden Eindrehens des Gegenkolbens. Seine Lippen können nicht umschlagen, wie dies beispielsweise bei einer rein linearen Zuführung und nicht noch überlagernden Drehbewegung der Fall sein könnte. Das Anschrauben bildet im übrigen eine dem Verbraucher geläufige Zuordnungsart, so daß auch aus diesem Grunde die Akzeptanz des Spenders gegeben ist. Um einen störungsfreien Kraftfluß der Druckfeder sicherzustellen, ist das diesbezügliche Federwiderlager so gestaltet, daß das innengehäuseseitige Ende der Druckfeder von einem ringförmigen Führungsstück überfangen ist. Letzteres kann zumindest zur Teilbildung einer Federkammer dadurch herangezogen werden, daß der Querschnitt des Führungsstückes U-förmig gestaltet ist und der untere Rand des Innengehäuses auf dem U-Steg aufsitzt. Weiter erweist es sich als günstig, daß der untere Rand des Innegehäuses von der Druckfeder gegen einen Anschlag des Außengehäuses gedrückt ist. Hierdurch ergibt sich eine stets exakt wieder auftretende Grundstellung. Um die Führungsanlage zwischen axial beweglichem Innengehäuse und Außengehäuse gering zu halten, ist es darüber hinaus von Vorteil, daß sich der Anschlag in Längsführungsrippen für das Innengehäuse fortsetzt; mit anderen Worten: die Längsrippen enden zur Bildung des Anschlages auf einer gemeinsamen Querebene des Spenders. Eine vorteilhafte Weiterbildung ergibt sich sodann dadurch, daß das Ventil in der Decke des Sockels sitzt, der als nach unten offene Einziehung des Bodens gestaltet ist. Dies führt neben hoher Materialersparnis zu einem trotzdem stabilen Boden des Spenders. Außerdem läßt sich die Einziehung sinnvoll zur Mitbildung der erwähnten Federkammer heranziehen. Vorteilhaft ist es überdies, daß die Decke des Sockels von einem Kolbenring gerahmt ist und dieser mit dieser zusammen den Gegenkolben bildet. Um den in aller Regel aus elastischem bzw. flexiblem Material gebildeten Kolbenring auch zugleich in eine weitere Funktion überführen zu können, schlägt die Erfindung vor, daß der Ventilverschlußkörper des Ventils über Stege mit dem Kolbenring verbunden ist. Ventil und Kolbenring sind so eine bauliche Einheit. Eine Ausgestaltung von sogar eigenständiger Bedeutung ergibt sich an einem patronenförmigen Innengehäuse zur Verwendung in einem Spender gemäß Anspruch 1 sodann dadurch, daß ein über den Transportkolben überstehender Wandungsabschnitt den Zylinderraum für einen dort vom unteren Ende her einfahrbaren Gegenkolben bildet. Hierdurch kann das Innengehäuse in Form einer Refill-Packung realisiert sein, so daß ein solcher Spender immer wieder verwendet werden kann. Optimiert ist das Andokken durch einen trichterförmigen Gegenkolben-Einlaufabschnitt am unteren Rand der hülsenförmigen Gehäusewand.In terms of construction, it then proves to be advantageous that the base and base of the outer housing can be screwed onto the lower end of the housing jacket wall. This not only has a fundamental advantage with regard to the formation of a gate that enables the insertion of the inner housing, but also that of the gentle screwing in of the counter-piston. His lips cannot turn over, as could be the case, for example, with a purely linear feed and not yet overlapping rotary movement. The screwing on forms, moreover, a type of coordination familiar to the consumer, so that the donor is accepted for this reason as well. In order to ensure a trouble-free flow of force of the compression spring, the relevant spring abutment is designed in such a way that the end of the compression spring on the inner housing side is covered by an annular guide piece. The latter can be used at least for the partial formation of a spring chamber in that the cross section of the guide piece is U-shaped and the lower edge of the inner housing rests on the U-web. It also proves to be advantageous that the lower edge of the inner housing is pressed by the compression spring against a stop of the outer housing. This results in a basic position that always recurs. In order to keep the guidance system between the axially movable inner housing and the outer housing low, it is also advantageous that the stop continues in longitudinal guide ribs for the inner housing; in other words: the longitudinal ribs end on a common transverse plane of the dispenser to form the stop. An advantageous further development results from the fact that the valve sits in the ceiling of the base, which is designed as a downward opening of the bottom. In addition to high material savings, this leads to a stable floor of the dispenser. In addition, the confiscation can be used to help form the spring chamber mentioned. It is also advantageous that the ceiling of the base is framed by a piston ring and this forms the counter-piston together with this. In order to be able to convert the piston ring, which is generally made of elastic or flexible material, into another function at the same time, proposes the invention that the valve closure body of the valve is connected to the piston ring via webs. The valve and piston ring are one structural unit. A design of even independent importance results on a cartridge-shaped inner housing for use in a dispenser according to claim 1, in that a wall section protruding above the transport piston forms the cylinder space for a counter-piston which can be inserted there from the lower end. As a result, the inner housing can be implemented in the form of a refill pack, so that such a dispenser can be used again and again. Andokken is optimized by a funnel-shaped counter-piston inlet section at the lower edge of the sleeve-shaped housing wall.

Eine andere vorteilhafte Ausgestaltung in Lösung der gestellten Aufgabe besteht an einem Spender gemäß Oberbegriff des Patentanspruchs 13 darin, daß das Innengehäuse als zum Boden des Außengehäuses hin offene Hülse ausgebildet ist, der Boden des Außengehäuses abnehmbar ist und daß die Abdichtung des Innengehäuses durch einen das offene Ende der Hülsenwandung des Innengehäuses mit dem Boden des Außengehäuses verbindenden Faltenbalg erfolgt.Another advantageous embodiment in solving the problem is a dispenser according to the preamble of claim 13 that the inner housing is designed as a sleeve open to the bottom of the outer housing, the bottom of the outer housing is removable and that the seal of the inner housing by an open End of the sleeve wall of the inner housing with the bottom of the outer housing connecting bellows.

Diese Ausgestaltung arbeitet sogar noch leichtgängiger zufolge Wegfalls der Reibung eines Gegenkolbens. Da das Innengehäuse in aller Regel aus Kunststoff hergestellt ist, kann, unter entsprechender Nutzung der Rückstellkraft dieses Materiales der Balg dem unteren Rand des Innengehäuses gleich einstückig angeformt sein. Vorteilhaft ist jedoch eine Lösung dahingehend, den Balg als getrenntes Bauteil zu erstellen. Es erweist sich als günstig, daß das Lufteinlaß-Ventil an einem vom Innengehäuse überlaufenen Sockel sitzt, welcher einen Haltevorsprung für den oberen Rand des separat gestalteten Balges ausbildet. Der Balg kann dabei in einer gewissen Vorspannung schon dem Sockel zugeordnet werden. Dabei ist es weiter günstig, daß der Sockel vom Boden einer Schraubkappe ausgebildet ist, auf welchem Boden sich der untere Rand des Balges abstützt. Schließlich erweist es sich als vorteilhaft, daß der Balg als Faltenbalg ausgebildet ist und die Rückstellfeder des Innengehäuses ist.This configuration works even more smoothly due to the elimination of the friction of a counter-piston. Since the inner housing is generally made of plastic, the bellows can be molded in one piece onto the lower edge of the inner housing by using the restoring force of this material. However, a solution is advantageous in that the bellows is created as a separate component. It has proven to be advantageous for the air inlet valve to sit on a base overflowed by the inner housing, which base forms a holding projection for the upper edge of the separately designed bellows. The bellows can already be assigned to the base with a certain preload. It is also favorable that the base is formed from the bottom of a screw cap, on which bottom the lower edge of the bellows is supported. Finally it turns out as advantageous that the bellows is designed as a bellows and is the return spring of the inner housing.

Der Gegenstand der Erfindung ist nachstehend anhand zweier zeichnerisch veranschaulichter Ausführungsbeispiele näher erläutert. Es zeigt:

Figur 1
den erfindungsgemäßen Spender im Vertikalschnitt in Grundstellung, vergrößert, gemäß dem ersten Ausführungsbeispiel,
Figur 2
einen gleichen Schnitt bei in Gebrauch genommenem Spender,
Figur 3
den Spender in Ausgabebetätigungsstellung,
Figur 4
den Schnitt gemäß Linie IV-IV in Figur 3,
Figur 5
den erfindungsgemäßen Spender im Vertikalschnitt in Grundstellung, vergrößert, gemäß dem zweiten Ausführungsbeispiel,
Figur 6
den Spender in Ausgabebetätigungsstellung,
Figur 7
die den Balg tragende Schraubkappe in Seitenansicht und
Figur 8
die Draufsicht hierzu.
The subject matter of the invention is explained in more detail below on the basis of two illustrative exemplary embodiments. It shows:
Figure 1
the dispenser according to the invention in vertical section in the basic position, enlarged, according to the first embodiment,
Figure 2
the same cut with the dispenser in use,
Figure 3
the donor in the dispensing confirmation position,
Figure 4
the section along line IV-IV in Figure 3,
Figure 5
the dispenser according to the invention in vertical section in the basic position, enlarged, according to the second embodiment,
Figure 6
the donor in the dispensing confirmation position,
Figure 7
the screw cap carrying the bellows in side view and
Figure 8
the top view of this.

Der dargestellte Spender Sp ist als Standgerät realisiert. Er besitzt ein langzylindrisches Außengehäuse 1. Dieses nimmt ein darin axial längsgeführtes Innengehäuse 2 auf.The dispenser Sp shown is realized as a standing device. It has a long cylindrical outer housing 1. This accommodates an inner housing 2 which is axially longitudinally guided therein.

Hinsichtlich des Innengehäuses 2 handelt es sich um ein hülsenförmiges Gebilde, welches auszugebende pastöse Masse 3 enthält.With regard to the inner housing 2, it is a sleeve-shaped structure which contains pasty mass 3 to be dispensed.

Bezüglich der Masse 3 kann es sich um Zahnpasta, Creme oder auch Lebensmittel handeln. Das hülsenförmige Innengehäuse 2 besitzt becherförmige Gestalt, ist also einerends offen. Das öffnungsseitige Ende weist nach unten.With regard to mass 3, it can be toothpaste, cream or even food. The sleeve-shaped inner housing 2 has a cup-shaped shape, so it is open at one end. The opening-side end points downwards.

Das andere, geschlossene Ende des Innengehäuses 2 formt eine seitliche Mundstücköffnung 4 mit angespritztem Originalitätsverschluß 5. Der Originalitätsverschluß 5 läuft konisch zu und kann nach Abbrechen durch umgekehrtes Einführen in die Mundstücköffnung 4 gegebenenfalls als Verschlußstopfen fungieren.The other, closed end of the inner housing 2 forms a lateral mouthpiece opening 4 with a molded-on tamper-evident closure 5. The tamper-evident closure 5 tapers and, after breaking off by reversing insertion into the mouthpiece opening 4, can possibly function as a sealing plug.

Seitlich der Mundstücköffnung 4 befindet sich eine Betätigungsfläche 6. Letztere ist Bestandteil eines Kopfstückes 7, gebildet vom oben frei aus dem Außengehäuse 1 vorragenden Ende des Innengehäuses 2. Die Betätigungsrichtung ist in Figur 3 durch Pfeil P kenntlich gemacht. Unter solcher Druckbetätigung bewirkt die Spendermechanik M ein schrittweises Verlagern eines Transportkolbens 8. Dieser schiebt mit seiner Vorderseite 9 die pastöse Masse 3 in Ausgaberichtung, also in Richtung der Mundstücköffnung 4. Diese Richtung ist durch Pfeil x angegeben.An actuating surface 6 is located to the side of the mouthpiece opening 4. The latter is part of a head piece 7, formed by the end of the inner housing 2 that projects freely above the outer housing 1. The direction of actuation is indicated by arrow P in FIG. Under such pressure actuation, the dispensing mechanism M effects a gradual displacement of a transport piston 8. This pushes with its front 9 the pasty mass 3 in the dispensing direction, that is, in the direction of the mouthpiece opening 4. This direction is indicated by arrow x.

Die Verlagerung des Transportkolbens 8 geschieht über Luftdruckbelastung, konkret zufolge eines bei Betätigung rückseitig des Transportkolbens 8 aufgebauten Luftüberdrucks. Die druckbelastete Rückseite des Transportkolbens trägt das Bezugszeichen 10. Die Zone des erzeugten Luftüberdrucks ist mit D bezeichnet.The displacement of the transport piston 8 takes place via air pressure loading, specifically as a result of an air overpressure built up on the back of the transport piston 8 when actuated. The pressure-loaded rear side of the transport piston bears the reference number 10. The zone of the excess air pressure generated is designated by D.

Aufgebaut wird der Luftüberdruck durch Annäherung der besagten Rückseite 10 des Transportkolbens 8 an einen ortsfesten, d.h. gehäusefesten Gegenkolben 11. Letzterer ragt in Grundstellung des Spenders Sp abdichtend in das dortige Ende des Innengehäuses 2. Der zugleich als Verschlußdeckel der Refill-Packung fungierende Transportkolben 8 ist genügend weit in das Innere des patronenförmigen Innengehäuses 2 eingeführt, so daß ein über die Rückseite 10 des Transportkolbens 8 nach unten hin überstehender Wandungsabschnitt 2' der Gehäusewand des Innengehäuses 2 verbleibt. Dieser Wandungsabschnitt schafft so einen Zylinderraum 12 für den bei Bestückung bzw. Folgebestückung vom unteren Ende her einfahrbaren Gegenkolben 11 der Spendermechanik M des Spenders Sp.The excess air pressure is built up by bringing said rear side 10 of the transport piston 8 closer to a stationary, i.e. counter-piston fixed to the housing 11. In the basic position of the dispenser Sp, the latter protrudes sealingly into the end of the inner housing 2 there of the transport piston 8 downwardly projecting wall section 2 'of the housing wall of the inner housing 2 remains. This wall section thus creates a cylinder space 12 for the counter-piston 11 of the dispenser mechanism M of the dispenser Sp which can be retracted from the lower end in the case of assembly or subsequent assembly.

Dem Gegenkolben 11 ist ein Ventil V zugeordnet. Über dieses besteht eine Verbindung zwischen dem Raum 12 bzw. Zylinderraum 12 und der Atmosphäre. Das Ventil V öffnet bei Vergrößerung des Abstandes zwischen Transportkolben 8 und Gegenkolben 11. Über diesen zur Außenluft bzw. Atmosphäre geöffneten Weg wird der Raum 12 um das Volumen der ausgegebenen Masse 3 durch Luft ausgeglichen. Das Ventil V wirkt wie ein Rückschlagventil.A valve V is assigned to the counter-piston 11. Via this there is a connection between the space 12 or cylinder space 12 and the atmosphere. The valve V opens when the distance between the transport piston 8 and the counter-piston 11 is increased. Via this path, which is open to the outside air or atmosphere, the space 12 is increased by the volume of the mass 3 dispensed balanced by air. The valve V acts like a check valve.

Der Gegenkolben 11 bildet den oberen Abschluß eines Sockels 13, der mittel- oder unmittelbar vom Außengehäuse 1 ausgeht. Beim dargestellten Ausführungsbeispiel ist der Sockel 13 integraler Bestandteil eines Bodens 14 des Spenders Sp. Die Einheit Sockel 13 / Boden 14 ist an das untere Ende der Gehäusemantelwand 15 des Spenders Sp angeschraubt. Dazu setzt sich der Boden 14 peripher in eine hochgezogene Ringwand 16 fort. Letztere bildet eine Kappe und trägt Innengewinde, welches mit korrespondierendem Außengewinde auf der Gehäusemantelwand 15 zusammenwirkt. Die Ringwand 16 wird oberseitig überfangen von einem umlaufenden Abdeckwulst 17. Auch letzterer ist der Gehäusemantelwand 15 des Außengehäuses 1 gleich angeformt.The counter-piston 11 forms the upper end of a base 13, which starts directly or indirectly from the outer housing 1. In the illustrated embodiment, the base 13 is an integral part of a base 14 of the dispenser Sp. The base 13 / base 14 unit is screwed to the lower end of the casing wall 15 of the dispenser Sp. For this purpose, the bottom 14 continues peripherally in a raised ring wall 16. The latter forms a cap and carries an internal thread, which interacts with a corresponding external thread on the housing jacket wall 15. The annular wall 16 is overlaid on the upper side by a circumferential covering bead 17. The latter is also integrally formed on the housing jacket wall 15 of the outer housing 1.

In gleicher Richtung wie 16 vom Boden 14 ausgehend befindet sich ein konzentrisch zur Ringwand 16 verlaufender, sich innenseitig der Wandung des Außengehäuses 1 erstreckender Ringkragen 18. Letzterer weist eine größere axiale Länge auf als die periphere Ringwand 16, überragt deren Länge etwa um das halbe bis doppelte Maß.In the same direction as 16, starting from the bottom 14, there is an annular collar 18 that extends concentrically to the annular wall 16 and extends inside the wall of the outer housing 1. The latter has a greater axial length than the peripheral annular wall 16, and exceeds its length by about half to double measure.

Der Sockel 13 ist als eine radial beabstandet zum Ringkragen 18 verlaufende Einziehung gestaltet, welche mundöffnungsseitig mit einer horizontalen Decke 19 abschließt. Die Decke 19 ist peripher von einem Kolbenring gerahmt, bildend den erwähnten Gegenkolben 11. Der flexible bzw. elastische Kolbenring greift mit einem innenseitigen Clipswulst 20 in eine angepaßte Ringnut 21 unterhalb der Ebene der Decke 19. Decke 19 und Kolbenring stellen so zusammen den Gegenkolben 11. In Grundstellung ragt nur der Gegenkolben 11, d.h. das obere Ende der Einziehung, in den vom Wandungsabschnitt 2' gebildeten Zylinderraum 12.The base 13 is designed as a recess which extends radially at a distance from the ring collar 18 and which ends with a horizontal cover 19 on the mouth opening side. The cover 19 is framed peripherally by a piston ring, forming the counter-piston 11 mentioned. The flexible or elastic piston ring engages with an inside clip bead 20 in an adapted annular groove 21 below the plane of the cover 19. The cover 19 and piston ring thus form the counter-piston 11 In the basic position, only the opposing piston 11 projects, ie the upper end of the retraction, into the cylinder space 12 formed by the wall section 2 '.

Das flexible Material des Kolbenringes eröffnet eine Weiterbildung dahingehend, daß es den Ventilverschlußkörper 22 des Ventiles V formt. Letzterer weist etwa semisphärische bzw. konische Gestalt auf und ist nach unten gerichtet. Seine Oberfläche wirkt mit einer Ventilsitzfläche 23 zusammen. Realisiert ist diese Ventilsitzfläche 23 durch die obere Randkante einer Luftdurchtrittsöffnung 24 in der Decke 19 des Sockels 13. Die nach unten hin offene Einziehung des Sockels 13 fungiert als Luftkanal. Der zentral liegende Ventilverschlußkörper steht über Stege 25 mit dem Ringkolben in Verbindung. Die Stege sind als gekurvte, horizontal ausgerichtete Radialstege gestaltet. Sie besitzen S-förmigen Verlauf. Insgesamt sind drei winkelgleich verteilt angeordnete Stege 25 verwirklicht. Die inneren Enden greifen an einer den Ventilverschlußkörper 22 tragenden Knotenplatte 26 an, in der zentral der Ventilverschlußkörper 23 wurzelt.The flexible material of the piston ring opens up a further development in that it forms the valve closure body 22 of the valve V. The latter has semi-spherical or conical shape and is directed downwards. Its surface cooperates with a valve seat surface 23. This valve seat surface 23 is realized by the upper edge of an air passage opening 24 in the ceiling 19 of the base 13. The downward opening of the base 13 functions as an air duct. The centrally located valve closure member is connected to the ring piston via webs 25. The webs are designed as curved, horizontally aligned radial webs. They have an S-shaped course. A total of three webs 25 arranged at equal angles are realized. The inner ends engage on a node plate 26 carrying the valve closure body 22, in which the valve closure body 23 is rooted centrally.

Besagte Einziehung besitzt zylindrische Gestalt und tritt in ihrem Außendurchmesser deutlich gegenüber dem lichten Durchmesser des Innengehäuses 2 zurück. In den Zwischenraum ragt der beschriebene Kolbenring des Gegenkolbens 11.Said retraction has a cylindrical shape and its outer diameter clearly decreases compared to the inside diameter of the inner housing 2. The described piston ring of the counter-piston 11 projects into the intermediate space.

Das Innengehäuse 2 steht in Richtung seiner aus Figur 1 ersichtlichen, anschlagbegrenzten Grundstellung unter Federbelastung. Hierzu dient eine im Bereich der Spendermechanik M eingesetzte Druckfeder 27. Es handelt sich um eine Schraubengangdruckfeder. Sie hält den Spenderkopf in einer so ausreichenden Vorstandslage, daß sein Kopfstück 7 weit vorragend über den oberen, eingezogenen Rand 28 des Außengehäuses 1 vorsteht. Die Einfahrstellung ergibt sich aus Figur 3.The inner housing 2 is in the direction of its stop-limited basic position shown in FIG. 1 under spring loading. A compression spring 27 used in the area of the dispenser mechanism M is used for this purpose. It is a helical compression spring. It holds the dispenser head in such a sufficient board position that its head piece 7 protrudes far beyond the upper, retracted edge 28 of the outer housing 1. The retracted position results from FIG. 3.

Die Druckfeder 27 erstreckt sich zwischen dem unteren Rand 29 des Innengehäuses 2 und dem Boden 14 des Außengehäuses 1. Die zylindrische Wendelebene der Druckfeder 27 fluchtet praktisch mit der zylindrischen, verlängerten Wandungsebene des Innengehäuses 2. Die obere endständige Windung der Druckfeder 27 tritt jedoch nicht unmittelbar gegen den unteren Rand 29 des Innengehäuses; das innengehäuseseitige Ende der Druckfeder 27 ist vielmehr von einem ringförmigen Führungsstück 30 überfangen. Das weist U-förmigen Querschnitt auf. Die U-Öffnung weist in Richtung des Bodens 14. Das U-förmige Führungsstück ist von solcher Länge, daß es auch in der aus Figur 1 ersichtlichen Grundstellung zumindest mit seinem äußeren U-Schenkel einen überlappenden Überstand zum Ringkragen 18 des Bodens 14 nicht verläßt. Besagter Schenkel führt sich an der Innenwand dieses Ringkragens, während der andere U-Schenkel seine Führung auf der Mantelfläche der zylindrischen, nach unten offenen Einziehung des Sockels 13 findet. Auf diese Weise ist eine Federkammer 31 für die Druckfeder 27 geschaffen.The compression spring 27 extends between the lower edge 29 of the inner housing 2 and the bottom 14 of the outer housing 1. The cylindrical helical plane of the compression spring 27 is practically aligned with the cylindrical, elongated wall plane of the inner housing 2. However, the upper end turn of the compression spring 27 does not occur immediately against the lower edge 29 of the inner housing; the inner housing end of the compression spring 27 is rather covered by an annular guide piece 30. This has a U-shaped cross section. The U-opening points in the direction of the bottom 14. The U-shaped guide piece is of such a length that it is also in the Figure 1 apparent basic position at least with its outer U-leg does not leave an overlapping projection to the ring collar 18 of the bottom 14. Said leg leads on the inner wall of this ring collar, while the other U-leg finds its guidance on the outer surface of the cylindrical, downwardly open retraction of the base 13. In this way, a spring chamber 31 is created for the compression spring 27.

Der untere Rand 29 des Wandungsabschnitts 2' respektive des Innengehäuses 2 sitzt auf der Oberseite des horizontalen U-Steges 32 des Führungsstückes 30 abgestützt auf.The lower edge 29 of the wall section 2 ′ or of the inner housing 2 is supported on the upper side of the horizontal U-web 32 of the guide piece 30.

Die die Grundstellung definierende Überstandsstellung des Kopfstückes 7 ist anschlagbegrenzt. Dies geschieht so, daß der untere Rand 29 des Innengehäuses 2 von der Druckfeder 27 gegen einen Anschlag 33 des Außengehäuses 1 gedrückt ist. Bezüglich dieses Anschlages 33 handelt es sich um die nach unten weisenden, abgeschrägten Stirnenden mehrerer Führungsrippen 34 an der Innenseite des zylindrischen Innengehäuses 2. Die leistenartigen Längsführungsrippen gehen besonders deutlich aus Figur 4 hervor und erbringen eine nur geringe Führungsfläche zwischen dem führenden Außengehäuse 1 des Spenders Sp und dem geführten Innengehäuse 2 desselben. Die erwähnte Schrägung der Stirnenden konvergiert in Ausgaberichtung (Pfeil x). Das hat zentrierende Wirkung auf das Innengehäuse 2 und erleichtert das erwähnte Andocken bzw. Einführen des Gegenkolbens 11. Um die anschlagbringende Überlappung an dem kartuschenartigen Innengehäuse 2 zu erzeugen, ist dessen unterer Rand deutlich über den Außendurchmesser des zylindrischen Körpers hinausgezogen - sprich verdickt.The protruding position of the head piece 7, which defines the basic position, is stop-limited. This is done in such a way that the lower edge 29 of the inner housing 2 is pressed by the compression spring 27 against a stop 33 of the outer housing 1. With regard to this stop 33, there are the downward-facing, beveled ends of a plurality of guide ribs 34 on the inside of the cylindrical inner housing 2. The strip-like longitudinal guide ribs are particularly clear from FIG. 4 and provide only a small guide surface between the leading outer housing 1 of the dispenser Sp and the guided inner housing 2 of the same. The aforementioned slope of the front ends converges in the direction of delivery (arrow x). This has a centering effect on the inner housing 2 and facilitates the aforementioned docking or insertion of the counter-piston 11. In order to produce the stop overlap on the cartridge-like inner housing 2, its lower edge is drawn significantly beyond the outer diameter of the cylindrical body - that is, it is thickened.

Eine weitere Maßnahme bezüglich des Andockens ergibt sich durch Schaffung eines trichterförmigen Gegenkolben-Einlaufabschnitts 35 innenseitig des unteren Randes 29 der hülsenförmigen Gehäusewand bzw. des Wandungsabschnitts 2'. Die Trichterung hat eine solche Eingangsweite, daß die üblicherweise vorhandenen, abstehenden Dichtlippen 36 der beiden Kolben, 8, 11 ohne Gefahr eines Umschlagens behutsam entgegen ihrer Rückstellkraft etwas eingeschnürt werden. Das bringt Dichte.Another measure regarding the docking results from the creation of a funnel-shaped counter-piston inlet section 35 on the inside of the lower edge 29 of the sleeve-shaped housing wall or the wall section 2 '. The funnel has such an inlet width that the usually existing, projecting sealing lips 36 of the two pistons, 8, 11 can be gently constricted against their resilience without the risk of a change. That brings density.

Das Kopfstück 7 ist bei Nichtgebrauch durch eine Schutzkappe 37 überfangbar. Letztere steht in Steck- oder Schraubverbindung zum Außengehäuse 1.The head piece 7 can be covered with a protective cap 37 when not in use. The latter is in plug or screw connection with the outer housing 1.

Funktion und Gebrauch des beschriebenen Spenders sind nachstehend kurz erläutert.The function and use of the dispenser described are briefly explained below.

Bei bestücktem Spender Sp wird zur portionierten Ausgabe seines Inhalts eine Kraft in Richtung des Pfeiles P auf das Kopfstück 7 ausgeübt. Das führt zu einem Überlaufen des kolbenbewehrten Sockels 13. Das Volumen des Zylinderraums 12 verkleinert sich. Die komprimierte eingeschlossene Luft übt einen Druck auf die Rückseite 10 des Transportkolbens 8 aus. Dieser schiebt Masse 3 über die Mundstücköffnung 4 stranggeformt aus. Die Betätigung geschieht entgegen der Kraft der Druckfeder 27. Wird die Betätigungsfläche 6 nun losgelassen, bewegt die Druckfeder 27 das Innengehäuse 2 wieder in Richtung des Pfeiles x. Die trotz Reibung der pastösen Masse und der des Transportkolbens 8 etwa sich ergebende leichte Absackbewegung bringt dabei allenfalls ein leichtes Zurücksaugen etwaiger Überstandsmasse über die Mundstücköffnung 4, ist aber nicht in der Lage, den Zylinderraum 12 durch Rutschen des Gegenkolbens 11 zu verkleinern, vielmehr öffnet sich vorrangig das Ventil V im Gegenkolben 11. Hierüber findet Luftausgleich im Umfang des abgegebenen Massevolumens statt. In seine anschlagbegrenzte Grundstellung zurückgetreten, kann das Innengehäuse 2 für den nächsten Hub genutzt werden usw..When the dispenser Sp is equipped, a force is exerted on the head piece 7 in the direction of the arrow P in order to dispense its contents in portions. This leads to the piston-reinforced base 13 overflowing. The volume of the cylinder space 12 decreases. The compressed enclosed air exerts pressure on the rear side 10 of the transport piston 8. This pushes mass 3 from the mouthpiece opening 4 strand-shaped. The actuation takes place against the force of the compression spring 27. If the actuation surface 6 is now released, the compression spring 27 moves the inner housing 2 again in the direction of the arrow x. The slight sagging movement that may result despite the friction of the pasty mass and that of the transport piston 8 at best results in a slight sucking back of any excess mass through the mouthpiece opening 4, but is not able to reduce the size of the cylinder space 12 by sliding the counter-piston 11, but rather opens up primarily the valve V in the counter-piston 11. This is used to compensate for air in the amount of the mass volume dispensed. Having returned to its stop-limited basic position, the inner housing 2 can be used for the next stroke, etc.

Zur Erst- oder Neubestückung wird der Boden 14 abgeschraubt, eine neue Refill-Kartusche eingesetzt. Dies geschieht zweckmäßig mit nach unten gerichtetem Spenderkopf. Durch Einführen respektive Aufschrauben des Bodens 14 gelangt der Gegenkolben 11 im Wege der Andock-Zuordnung in den Bereich des Wandungsabschnitts 2'. Er schließt den Zylinderraum 12 ab.For the first or new assembly, the base 14 is unscrewed and a new refill cartridge is inserted. This is conveniently done with the dispenser head pointing downwards. By inserting or screwing on the base 14, the counter-piston 11 arrives in the region of the wall section 2 'by means of the docking assignment. It closes the cylinder chamber 12.

Etwa eingeschlossene, komprimierte Luft dient als Druckpolstervorrat. Der Spender hat seine Gebrauchsbereitschaft.Approximately enclosed, compressed air serves as a pressure cushion supply. The donor is ready to use.

Der Spender Sp gemäß dem zweiten Ausführungsbeispiel (Figuren 5 bis 8) ist, was das Grundprinzip des den Transportkolben 8 treibenden Luftüberdrucks betrifft, identischen Aufbaues. Die Bezugsziffern sind, zum Teil ohne textliche Wiederholungen, sinngemäß angewandt, der Text zum großen Teil also auch auf das zweite Ausführungsbeispiel lesbar.The dispenser Sp according to the second exemplary embodiment (FIGS. 5 to 8) has an identical structure as far as the basic principle of the positive air pressure driving the transport piston 8 is concerned. The reference numerals are used analogously, in part without repetitions of text, and the text is therefore also largely readable for the second exemplary embodiment.

Der bauliche Unterschied besteht darin, daß zur Erzeugung des Luftüberdrucks in der Zone D anstelle des gehäusefesten Gegenkolbens 11 nun ein Balg B tritt. Es handelt sich um einen in Richtung des Pfeiles P komprimierbaren Faltenbalg, der sich an den unteren Rand 29 des Innengehäuses 2 anschließt.The structural difference is that in order to generate the excess air pressure in zone D, a bellows B now occurs instead of the counter-piston 11 fixed to the housing. It is a bellows which can be compressed in the direction of the arrow P and which adjoins the lower edge 29 of the inner housing 2.

Der Faltenbalg kann einstückig mit dem hülsenförmigen, eine Nachfüllpatrone bildenden Gebilde des Innengehäuses 2 sein, indem dessen Mantelwand, sprich Wandungsabschnitt 2', über den unteren Rand 29 sich in Richtung des Bodens 14 nach unten hin fortsetzt.The bellows can be made in one piece with the sleeve-shaped structure of the inner housing 2, which forms a refill cartridge, in that its jacket wall, ie wall section 2 ', continues downward over the lower edge 29 in the direction of the base 14.

Beim dargestellten Ausführungsbeispiel ist jedoch eine separate Ausbildung des Balges B bevorzugt.In the illustrated embodiment, however, a separate configuration of the bellows B is preferred.

So oder so tritt der untere Rand 38 des Balges B abgedichtet gegen die korrespondierende Oberseite des Bodens 14. Die Dichtwirkung läßt sich aus der Elastizität des balgbildenden Materiales erzeugen. Das kann unter Nutzung des Innendruckes geschehen, wobei es vorteilhaft ist, daß die dortige endständige Falte 39 des Faltenbalges gegen die besagte Oberseite gedrückt wird. Die endständige Falte 39 kann, wie dargestellt, breiter ausgebildet sein, dies unter Nutzung einer noch größeren Flächenanlage sowie einer größeren Fläche für den wirksamen Innendruck. Der innere Stirnrand dieser Falte 39 endet vor dem auch bei dieser Ausführungsform vorhandenen Sockel 13 des peripher zu einer Kappe hochgeschlagenen Bodens 14. Die Kappe ist auch hier als Schraubkappe 40 realisiert.Either way, the lower edge 38 of the bellows B is sealed against the corresponding top of the bottom 14. The sealing effect can be generated from the elasticity of the bellows-forming material. This can be done using the internal pressure, it being advantageous for the end fold 39 of the bellows there to be pressed against said upper side. The terminal fold 39 can, as shown, be made wider, using an even larger area and a larger area for the effective internal pressure. The inner end edge of this fold 39 ends in front of the base 13, which is also present in this embodiment, of the bottom which has been turned up to a cap 14. The cap is also implemented here as a screw cap 40.

Die bodenseitige Dichtung ist mit a bezeichnet.The bottom seal is marked with a.

Eine entsprechende Dichtung liegt auch zwischen dem unteren Rand 29 des Wandungsabschnitts 2' des Innengehäuses 2 und dem nach unten anschließenden Balg B vor. Diese Dichtung trägt das Bezugszeichen b. Sie befindet sich zwischen der planen Unterseite des unteren Randes 29 und dem korrespondierenden oberen Rand 41 des Balges B. Dieser obere Rand 41 ist eine horizontale Stufe. Im Anschluß an diese horizontale Stufe geht der Balg B in einen Steckvorsprung 42 über, mit dem er in das untere, offene Ende der jeweiligen Refill-Kartusche ragt. Die Mantelwand des Steckvorsprunges 42 ist zylindrisch. Sie liegt dichtend an der korrespondierenden zylindrischen Innenfläche der den Luftüberdruck erzeugenden Zone D an.A corresponding seal is also present between the lower edge 29 of the wall section 2 'of the inner housing 2 and the bellows B adjoining at the bottom. This seal bears the reference symbol b. It is located between the flat underside of the lower edge 29 and the corresponding upper edge 41 of the bellows B. This upper edge 41 is a horizontal step. Following this horizontal step, the bellows B merges into a plug-in projection 42 with which it projects into the lower, open end of the respective refill cartridge. The outer wall of the plug-in projection 42 is cylindrical. It lies sealingly against the corresponding cylindrical inner surface of zone D which generates the excess air pressure.

Der Vorsprung 42 liegt konzentrisch um den zentralen Sockel 13 herum und ist in Richtung der zylindrischen Mantelwand dieses Sockels 13 querschnittsverjüngend sowie unter Beibehaltung einer durchgehenden Wandungsdicke eingezogen. Der so erzielte horizontale Ringsteg 43 ist zur Sicherung des auf den Sockel 13 aufgesteckten Balges B herangezogen. Die sokkelseitige Beteiligung dieser Sicherung sieht so aus, daß oberhalb der oberseitigen Decke 19 des Sockels 13 mantelwandseitig ein Haltevorsprung 44 liegt. Er ist dem Sockel gleich angeformt und als umlaufende Ringrippe realisiert, deren nach auswärts weisender Stirnrand nach oben hin rotationssymmetrisch konvergiert, so daß sich der Ringsteg 43 gut aufziehen läßt. In zugeordneter Stellung tritt die obere Seite des Ringsteges 43 gegen die ebene untere Seite des Haltevorsprungs 44. Der Faltenbalg kann die entsprechende Vorspannung aufweisen. Er ist unverlierbar an 13 gehalten.The projection 42 is concentric around the central base 13 and is tapered in the direction of the cylindrical jacket wall of this base 13, while maintaining a continuous wall thickness. The horizontal ring web 43 thus obtained is used to secure the bellows B plugged onto the base 13. The involvement of this fuse on the socle side is such that a holding projection 44 lies above the top ceiling 19 of the base 13 on the jacket wall side. It is molded onto the base and realized as a circumferential ring rib, the outward-facing end edge of which converges rotationally symmetrically upwards, so that the ring web 43 can be pulled open easily. In the assigned position, the upper side of the ring web 43 comes into contact with the flat lower side of the holding projection 44. The bellows can have the corresponding preload. It is held captive at 13.

Wie Figur 5 entnehmbar, befindet sich im Bereich der horizontalen Decke 19 ein Ventil V. Es handelt sich auch hier um ein Einlaßventil, welches nun aber einfach von einem stecktechnisch endgefaßten Gummi- oder Kunststofflappen gebildet ist, der die zentral liegende Luftdurchtrittsöffnung 24 in der Decke 19 überfängt. Die Decke nimmt beim zweiten Ausführungsbeispiel eine tieferliegende Lage ein, d.h. die Wandung des Sockels 13 geht deutlich über die Oberseite der Decke 19 hinaus. Auf diese Weise entsteht ein eine Topfhöhlung 45 umschreibender Kragen 46. Die Öffnung der Topfhöhlung 45 ist von einer einklipsbaren Kappe 47 verschlossen. Die ist zentral perforiert. Die entsprechenden Löcher tragen das Bezugszeichen 48. Die Kappe 47 schützt den Ventilkörper und sichert ihn mit gegen Herausfallen.As can be seen in FIG. 5, there is a valve V in the area of the horizontal ceiling 19. This is also an inlet valve, which is now simply a plug-in type formed rubber or plastic tab is formed, which overlaps the centrally located air passage opening 24 in the ceiling 19. In the second exemplary embodiment, the ceiling occupies a lower position, ie the wall of the base 13 extends significantly beyond the top of the ceiling 19. In this way, a collar 46 circumscribing a pot cavity 45 is created. The opening of the pot cavity 45 is closed by a clip-on cap 47. It is centrally perforated. The corresponding holes have the reference symbol 48. The cap 47 protects the valve body and secures it against falling out.

Zwischen der Innenseite des Ringsteges 43 und der Mantelwand des Sockels 13 verbleibt ein Ringspalt 49. Dieser verbindet die Zone D mit dem ringförmigen Innenraum 50 des Balges B.An annular gap 49 remains between the inside of the ring web 43 and the outer wall of the base 13. This connects the zone D to the annular interior 50 of the bellows B.

Die Schraubkappe 40 legt sich außerhalb des Balgaufnahmeraumes mit der Oberseite des Bodens 14 gegen die korrespondierende Stirnfläche 51 des Außengehäuses 1 an. Hierdurch entsteht eine Dichtung c oder besser Schraubbegrenzung.The screw cap 40 lies outside the bellows receiving space with the top of the base 14 against the corresponding end face 51 of the outer housing 1. This creates a seal c or better screw limitation.

Der Sockel 13 weit eine in Richtung der Standfläche des Spenders Sp liegende Öffnung auf.The base 13 has an opening lying in the direction of the base of the dispenser Sp.

Funktion und Gebrauch dieses Spenders Sp sind nachstehend kurz erläutert.The function and use of this dispenser Sp are briefly explained below.

Bei bestücktem Spender Sp wird zur portionierten Ausgabe seines Inhalts eine Kraft in Richtung des Pfeiles P auf das Kopfstück 7 ausgeübt. Das führt auch hier zu einem Überlaufen des Sockels 13 durch das Innengehäuse 2, nun aber nicht im Sinne einer Relativverlagerung zwischen Zylinder und einem Gegenkolben, sondern im Sinne einer Volumenverkleinerung der den Luftüberdruck aufbauenden Zone D des Spenders. Das kann unter Durchlauf des gesamten zur Verfügung stehenden Hubes geschehen oder aber unter Durchlaufen eines Teilhubes desselben. In Figur 6 ist eine maximale Komprimierung dargestellt, indem sich die Falten des Balges B knöchernd aufeinanderlegen. Das Volumen der Zone D verkleinert sich dabei. Der im Balg befindliche Anteil kann über den Ringspalt 49 atmen. Die komprimierte, eingeschlossene Luft übt einen Druck auf die Rückseite 10 des Transportkolbens 8 aus. Letzterer schiebt Masse 3 über die Mundstücköffnung 4 stranggeformt aus. Die Betätigung geschieht entgegen der Rückstellkraft des als Druckfeder fungierenden, nach außen hin abgedichteten Faltenbalges.When the dispenser Sp is equipped, a force is exerted on the head piece 7 in the direction of the arrow P in order to dispense its contents in portions. Here, too, the base 13 overflows through the inner housing 2, but now not in the sense of a relative displacement between the cylinder and a counter-piston, but in the sense of a volume reduction in the zone D of the dispenser which builds up the excess air pressure. This can be done by running through the entire available stroke or by going through a partial stroke of the same. A maximum compression is shown in FIG. 6 in that the folds of the bellows B lie on one another in an ossified manner. The volume of zone D is reduced there. The portion in the bellows can breathe through the annular gap 49. The compressed, enclosed air exerts pressure on the rear side 10 of the transport piston 8. The latter pushes mass 3 from the mouthpiece opening 4 strand-shaped. The actuation takes place against the restoring force of the bellows, which acts as a compression spring and is sealed off from the outside.

Wird nun die Betätigungsfläche 6 losgelassen, schiebt die Federkraft des Balges das Innengehäuse 2 wieder in Richtung des Pfeiles x.If the actuating surface 6 is now released, the spring force of the bellows pushes the inner housing 2 again in the direction of the arrow x.

Eine gewisse leichte Absackbewegung der pastösen Masse 3 und des Transportkolbens 8 bringen einen vorteilhaften Nebeneffekt, indem sie eine etwa vorstehende Rest-Überstandsmasse des Stranges über die Mundstücköffnung 4 einsaugen. Ansonsten ist aber das Luftpolster durch das Ventil V gegen Ausweichen der Luft gesichert, denn der sich zwischen der Rückseite 10 und der Oberseite des Bodens 14 verringernde Axialabstand läßt ein so hohes Luftpolster entstehen, daß das Klappventil dichtschließend gegen die vom Rand der Luftdurchtrittsöffnung 24 gebildete Ventilsitzfläche gepreßt wird.A certain slight sagging movement of the pasty mass 3 and the transport piston 8 has an advantageous side effect in that they suck in a protruding residual protruding mass of the strand via the mouthpiece opening 4. Otherwise, the air cushion is secured by the valve V to prevent the air from escaping, because the axial distance which decreases between the rear 10 and the top of the base 14 creates such a high air cushion that the flap valve closes tightly against the valve seat surface formed by the edge of the air passage opening 24 is pressed.

Im Gegenzug wird über 24 der Luftausgleich im Umfang des abgegebenen Massevolumens bewirkt. In seine anschlagbegrenzte Grundstellung zurückgetreten, kann das Innengehäuse 2 für den nächsten Ausgabehub benutzt werden usw..In return, over 24 the air equalization is effected to the extent of the mass volume delivered. Having returned to its stop-limited basic position, the inner housing 2 can be used for the next delivery stroke, etc.

Zur Erst- und Neubestückung wird der einen Teil der Schraubkappe 40 bildende Boden 14 abgeschraubt, und eine neue Refill-Kartusche eingesetzt. Dies geschieht zweckmäßig mit nach unten gerichtetem Spenderkopf. Durch Einführen respektive Aufschrauben der Schraubkappe 40 gelangt der Balg B bei separater Ausbildung desselben in Andockzuordnung zur Kartusche respektive zum Wandungsabschnitt 2'. Die Zone D wird hermetisch geschlossen. Eine schon bei Eintritt des Vorsprungs 42 sich ergebende Vorkomprimierung in der Zone D trägt zur Bildung eines Druckpolstervorrats bei. Der Spender ist gebrauchsbereit.For the first and new assembly, the base 14 forming part of the screw cap 40 is unscrewed and a new refill cartridge is inserted. This is conveniently done with the dispenser head pointing downwards. By inserting or unscrewing the screw cap 40, the bellows B, when formed separately, is docked to the cartridge or to the wall section 2 '. Zone D is hermetically sealed. A pre-compression in zone D which already occurs when the projection 42 occurs contributes to the formation of a pressure cushion supply. The dispenser is ready to use.

Claims (16)

  1. Dispenser (Sp) for dispensing pasty compositions (3) such as e.g. toothpaste, with an outer housing (1) with an open upper side and a closed bottom (14), wherein in the latter is arranged an air inlet valve (V) which opens in case of partial pressure in the outer housing (1), wherein there is further provided an inner housing (2) which projects upwardly out of the outer housing (1) and which comprises on its headpiece (7) an actuating surface (6) and a mouthpiece opening (4), by means of which actuating surface (6) the inner housing (2) can be pressed against spring pressure into the outer housing (1) which is sealed off from it, so that under this actuation a transport piston (8) which travels in the inner housing (2) in the direction (arrow x) of the mouthpiece opening (4) pushes the composition (3) in front of it as a result of an excess air pressure built up on the rear side thereof, characterised in that the inner housing (2) is constructed as a sleeve which opens towards the bottom (14) of the outer housing (1), the bottom (14) of the outer housing (1) is removable, and sealing of the inner housing (2) takes place by a counterpiston (11) rigidly connected to the bottom (14) of the outer housing (1) and extending into the inner housing (2).
  2. Dispenser according to claim 1, characterised in that the excess air pressure is built up by approach of the rear side (10) of the transport piston (8) to the counterpiston (11) fixed to the housing, wherein the space (12) between the two pistons (8, 11) can be made to communicate with the atmosphere by the valve (V) which opens on increase of the distance between the pistons (8, 11).
  3. Dispenser according to one or more of the preceding claims, characterised in that the counterpiston (11) is mounted on a base (13) of an outer housing (1), relative to which the inner housing (2) is slidable against spring bias in such a way that the base (13) moves into the lower end of the inner housing (2) which with its actuating surface (6) protrudes beyond the upper edge (28) of the outer housing (1).
  4. Dispenser according to one or more of the preceding claims, characterised by a compression spring (27) between the lower edge (29) of the inner housing (2) and the bottom (14) of the outer housing (1).
  5. Dispenser according to claim 3 or 4, characterised in that the bottom (14) and base (13) of the outer housing (1) can be bolted onto the lower end of the housing peripheral wall (15).
  6. Dispenser according to claim 4 or 5, characterised in that the inner end of the compression spring (27) is covered by an annular guide piece (30).
  7. Dispenser according to claim 6, characterised in that the cross-section of the guide piece (30) is U-shaped and the lower edge (29) of the inner housing (2) rests on the web (32) of the U.
  8. Dispenser according to one or more of claims 4 to 7, characterised in that the lower edge (29) of the inner housing (2) is biased by the compression spring (27) against a stop (33) of the outer housing (1).
  9. Dispenser according to claim 8, characterised in that the stop (33) continues into longitudinal guide ribs (34) for the inner housing (2).
  10. Dispenser according to one or more of claims 3 to 9, characterised in that the valve (V) is mounted in the top (19) of the base (13) which is designed as an open-bottomed recess of the bottom (14).
  11. Dispenser according to claim 10, characterised in that the top (19) is framed by a piston ring and the latter forms together with it the counterpiston (11).
  12. Dispenser according to claim 11, characterised in that the valve closure body (22) of the air inlet valve (V) is connected by webs (25) to the piston ring.
  13. Dispenser (Sp) for dispensing pasty compositions (3) such as e.g. toothpaste, with an outer housing (1) with an open upper side and a closed bottom (14), wherein in the latter is arranged an air inlet valve (V) which opens in case of partial pressure in the outer housing (1), wherein there is further provided an inner housing (2) which projects upwardly out of the outer housing (1) and which comprises on its headpiece (7) an actuating surface (6) and a mouthpiece opening (4), by means of which actuating surface (6) the inner housing (2) can be pressed against spring pressure into the outer housing (1) which is sealed off from it, so that under this actuation a transport piston (8) which travels in the inner housing (2) in the direction (arrow x) of the mouthpiece opening (4) pushes the composition (3) in front of it as a result of an excess air pressure built up on the rear side thereof, characterised in that the inner housing (2) is constructed as a sleeve which opens towards the bottom (14) of the outer housing (1), the bottom (14) of the outer housing (1) is removable, and sealing of the inner housing (2) takes place by a bellows (B) connecting the open end of the sleeve wall of the inner housing (2) to the bottom (14) of the outer housing (1).
  14. Dispenser according to claim 13, characterised in that the air inlet valve (V) is mounted on a base (13) which is overrun by the inner housing (2) and which forms a retaining projection (44) for the upper edge (41) of the bellows (B).
  15. Dispenser according to claim 14, characterised in that the base (13) extends from the bottom (14) of a screw-on cap (40), on which bottom (14) is sealingly supported the lower edge (38) of the bellows (B).
  16. Dispenser according to one or more of claims 13 to 15, characterised in that the bellows (B) is the return spring of the inner housing (2).
EP93915857A 1992-07-10 1993-07-09 Dispenser for pasty materials Expired - Lifetime EP0648180B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4222630 1992-07-10
DE4222630 1992-07-10
DE4308397 1993-03-17
DE4308397A DE4308397A1 (en) 1992-07-10 1993-03-17 Dispenser for dispensing pasty masses
PCT/EP1993/001793 WO1994001346A1 (en) 1992-07-10 1993-07-09 Dispenser for pasty materials

Publications (2)

Publication Number Publication Date
EP0648180A1 EP0648180A1 (en) 1995-04-19
EP0648180B1 true EP0648180B1 (en) 1996-12-18

Family

ID=25916461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93915857A Expired - Lifetime EP0648180B1 (en) 1992-07-10 1993-07-09 Dispenser for pasty materials

Country Status (5)

Country Link
EP (1) EP0648180B1 (en)
AT (1) ATE146434T1 (en)
AU (1) AU4566693A (en)
DE (2) DE4308397A1 (en)
WO (1) WO1994001346A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809240B4 (en) * 1998-03-05 2008-01-03 Rpc Bramlage Gmbh Dispenser for dispensing pasty masses

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4306737A1 (en) * 1993-03-04 1994-09-08 Alfred Von Schuckmann Dispenser for the simultaneous dispensing of at least two pasty masses
DE4326108A1 (en) * 1993-08-04 1995-02-09 Alfred Von Schuckmann Dispenser for dispensing preferably solid masses
DE19831957A1 (en) 1998-07-16 2000-01-20 Rpc Bramlage Gmbh Dispenser for dispensing pasty masses
DE19937442A1 (en) 1999-08-07 2001-02-08 Pfeiffer Erich Gmbh & Co Kg Dispenser for flowable media, in particular for atomizing liquids
CN110282272A (en) * 2019-06-13 2019-09-27 中山市华宝勒生活用品实业有限公司 A kind of piston-type direct pours out object container
CN110436059A (en) * 2019-07-31 2019-11-12 赫蕾雪(上海)科技有限公司 A kind of push type dry powder nebulizers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB981552A (en) * 1960-04-29 1965-01-27 Cassac Ltd A new or improved dispenser for viscous materials
FR2510071B1 (en) * 1981-07-24 1985-11-15 Normos Annie DISPENSER OF VISCOUS PRODUCTS
DE3843759A1 (en) * 1987-10-14 1990-07-05 Mega Prod Verpack Marketing Dispenser for pasty substances
FR2635473B1 (en) * 1988-08-19 1990-11-16 Oreal DEVICE FOR DISPENSING DOSES OF A PASTY PRODUCT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809240B4 (en) * 1998-03-05 2008-01-03 Rpc Bramlage Gmbh Dispenser for dispensing pasty masses

Also Published As

Publication number Publication date
DE4308397A1 (en) 1994-01-13
DE59304828D1 (en) 1997-01-30
WO1994001346A1 (en) 1994-01-20
ATE146434T1 (en) 1997-01-15
AU4566693A (en) 1994-01-31
EP0648180A1 (en) 1995-04-19

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