WO1991013569A1 - Dispenser for liquid or paste materials - Google Patents

Dispenser for liquid or paste materials Download PDF

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Publication number
WO1991013569A1
WO1991013569A1 PCT/EP1991/000381 EP9100381W WO9113569A1 WO 1991013569 A1 WO1991013569 A1 WO 1991013569A1 EP 9100381 W EP9100381 W EP 9100381W WO 9113569 A1 WO9113569 A1 WO 9113569A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
storage space
dispenser according
dispenser
cylinder
Prior art date
Application number
PCT/EP1991/000381
Other languages
German (de)
French (fr)
Inventor
Michael Hertrampf
Original Assignee
Michael Hertrampf
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 Michael Hertrampf filed Critical Michael Hertrampf
Priority to EP91905269A priority Critical patent/EP0518919B1/en
Priority to DE59102511T priority patent/DE59102511D1/en
Publication of WO1991013569A1 publication Critical patent/WO1991013569A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/002—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means
    • A46B11/0058—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means with a metered dosage
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/002—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means
    • A46B11/0024—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means with a permanently displaceable pressurising member that remain in position unless actuated, e.g. lead-screw or ratchet mechanisms, toothpaste tube twisting or rolling devices
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/002—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means
    • A46B11/0024—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means with a permanently displaceable pressurising member that remain in position unless actuated, e.g. lead-screw or ratchet mechanisms, toothpaste tube twisting or rolling devices
    • A46B11/0034—Means comprising a rachet mechanism or equivalent for advancing the piston stepwise
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the invention relates to a dispenser mentioned in the preamble of claim 1.
  • a filling toothbrush which has the features of the dispenser of the type 5 in question, in which the piston forms the last, closed part of a plurality of telescopically telescopic pipe parts.
  • a screw device is provided with which the piston and the other tube parts which can be pushed into one another can be compressed in order to reduce the volume of the storage space. Tooth cleaning agent is thus screwed out of the storage space through a channel into the area of the toothbrush.
  • This screwing device is very complex.
  • the maximum possible storage space is relatively small in relation to the outside dimensions of the dispenser.
  • a filling toothbrush which has a pump device including the volume change device with a valve.
  • the valve required to achieve the pumping action represents a special effort and also includes the risk of inoperability.
  • the invention has for its object a - -
  • the object on which the invention is based is achieved by the teaching specified in the characterizing part of claim 1.
  • the invention is based on the idea of controlling the reflux of liquid or pasty material, e.g. To prevent dental cleaning fluid valve by mechanical means. These are formed by a mechanical escapement which acts on the piston which is movable in the cylinder and which makes it more difficult or possible to prevent it from moving in the sense of enlarging the storage space. This means that the piston can only move in the direction of emptying the storage space.
  • the volume change device can generate a sufficiently high pressure to overcome the flow resistance and to transport the filling material to the outlet opening.
  • the volume change device increases its volume again.
  • the flow resistance is now substantially greater than the relatively low friction resistance of the piston when it moves in the sense of a reduction in the storage space.
  • the piston thus moves uninhibited in this sense.
  • the dispenser according to the invention does not require any complicated mechanical means for conveying the filling material
  • Actuators and no liquid valves It is therefore extremely simple to set up, saves material and is cheap. These advantages are particularly important in the case of filling toothbrushes, for which the dispenser according to the invention is particularly well suited, because it is precisely the point of filling toothbrushes not to be reused after the tooth cleaning agent has been used up, so as to force the user to do so Consumption of a certain to use a new toothbrush, ie a brush with new bristles, which is of extraordinary importance for a proper cleaning of the teeth.
  • the type of mechanical inhibition can be carried out in various ways, some of which are familiar to any person skilled in the art. An expedient embodiment is specified in claim 2.
  • the escapement has latching depressions arranged in any manner in the storage space, in which a locking projection provided on the piston is supported in the direction of an enlargement of the storage room.
  • the piston can only move in one direction, namely in the direction of a reduction in the storage space.
  • the locking recesses can be located in an inner wall of the cylinder, always so that they can be reached from the locking projection of the piston.
  • a particularly expedient embodiment consists in that the latching recesses are located on the outer wall of a tube which runs from the outlet opening through an opening in the piston to the end of the cylindrical storage space facing away from the outlet opening.
  • the locking projection on the piston is formed by a lip-shaped edge in the opening of the piston for the tube.
  • the volume change device is expediently located at the end of the storage space facing away from the outlet opening, where it can be actuated particularly easily with a thumb.
  • Another expedient embodiment of the escapement for the piston expediently has a lip, preferably a circumferential sealing lip, which is inclined in the radial and escapement direction on the inner wall of the cylinder or on an outer wall of one of the outlet opening through an opening forming the lip with its edge is under pressure in the piston guiding tube.
  • the edge of the sealing lip is held in place by friction and thereby steepens somewhat, which increases the frictional force further increased considerably and thus caused the inhibition.
  • the situation is reversed in the opposite direction.
  • the sealing lip is entrained by the friction and its contact pressure is reduced.
  • the storage space is formed in a hollow handle of a filling toothbrush.
  • This handle expediently has a handle at one end, while bristles are arranged at the other end, in the area of which the outlet opening for pasty material, namely tooth cleaning agent, is arranged.
  • the outlet opening is connected to the storage space via a channel arranged in the stem. This channel essentially forms the flow resistance.
  • Fig. 1 shows an embodiment of a dispenser in use with a filling toothbrush according to the invention in longitudinal section
  • FIG. 2 shows an enlarged section II from FIG. 1.
  • the filling toothbrush shown in the drawing has a hollow handle 1 in which there is a storage space 2 for tooth cleaning agents. At the upper end of the handle 1 there is a handle 3 in which there is an outlet opening 4 in the area of bristles 5. The outlet opening 4 is connected to the storage space 2 via a channel 6. Between the channel 6 and the storage space 2 there is a volume change device 7 with an actuating element 8 in the form of a compressible membrane.
  • the interior of the handle 1 is cylindrical in two stages with cylinder sections 9 and 10, the diameter or cross section of which varies in stages, namely the cross section of the cylinder section 10 closer to the volume changing device 7 than that Cylinder section 9.
  • a piston 11 which rests with a cylinder-like sealing lip 12 on the inner wall of the cylinder section 9.
  • an inner sealing lip 13 is provided, with which the piston 11 surrounds a tube 14, which connects the storage space 2 in the area of the volume change device 7 with the stem 3 and whose interior forms part of the channel 6.
  • a piston 15 which bears against the wall of the cylinder section 10 with a cylindrical, circumferential sealing lip 16. It is ring-shaped, a cylindrical ring surface 17 having the same inner diameter as the cylinder section 9 and thus being able to receive the piston 11 in a sealed manner. It abuts a stop 18 designed as a radial inner projection.
  • a bottom 19 of the storage space 2 is complementary to the facing surface of the piston 11 or the piston 15, so that when the pistons 11 and 15 are in the lowest position in the drawing, there is no more dead space between the pistons 11 and 15 and the bottom 19 is present, so that all tooth cleaning agents can be emptied.
  • the bottom 19 also holds the lower end of the tube 14 and clamps with its outer edge the outer edge of the membrane forming the actuator 8 firmly against the inner wall of the handle 1.
  • the tube 14 has on its outer wall 20 due to its small size in FIG. 1, but in the enlarged section in FIG. 2 clearly recognizable sawtooth-shaped locking recesses 21, into which the radially flexible sealing lip 13 of the piston 11 engages ⁇ most can.
  • the volume in the area of the volume change device 7 and thus in total in the storage space 2 is reduced by pressing on the actuating member 8 designed as a membrane.
  • tooth cleaning agent located in the storage space 2 is pressed into the pipe 14 and further through the channel 6 to the outlet opening 4 and thus to the bristles 5.
  • the pressure on the actuating member 8 is relieved, the latter tries to spring back, so that there is a negative pressure in the storage space 2, which acts on the underside of the piston 11, so that it acts in the sense of a reduction in the storage space in the direction of the volume change device ⁇ device 7 moves.
  • the sealing lip 13 slides over at least one of the teeth formed by the locking recesses 21 and engages in the next locking recess 21, so that the sealing lip 13 is supported in this locking recess again.
  • the distance between the locking recesses 21 is of course chosen such that when the actuating device is lifted, the sealing lip 13 engages at least in the next of the locking recesses 21.
  • sealing lip 13 extends radially inwards and inclines in the direction of inhibition.
  • the locking recesses 21 can possibly be dispensed with entirely, because in the direction of inhibition the sealing lip 13 is divided by the friction on the surface 20 of the tubular rim 14, which considerably increases the friction and causes movement of the piston 11 is prevented in the direction of inhibition.
  • the cylinder sections 9 and 10 together form a separate part, as well as the tube 14 and the bottom 19.
  • the tube 14 is separable from the stem 3.
  • the cylinder sections 9, 10 with the pistons 11, 15 and the tube 14 and base 19 with the actuating element 8 can thus be removed from the handle 1 and by a corresponding one Parts combination 9, 10; 11, 15; 14, 19 replaceable, in which the storage space 2 is filled.

Abstract

A dispenser for liquid or paste materials comprises a cylindrical reservoir (2) for the material which is closed by a movable piston (11) and connected via a flow resistance (6) to an outlet orifice and to a volume-varying device (7). A mechanical hindrance in the form of an enlargement of the reservoir (2) hinders or prevents the movement of the piston (11). The hindrance may also consist of catch projections (13) on the piston which engage in catch depressions (13). The hindrance may also be an upwardly sloping sealing lip. The hindrance makes valves for delivering the material superfluous and therefore permits simple, reliable and economical construction. The dispenser can be designed particularly advantageously as a filling toothbrush.

Description

Spender für flüssiges oder pastöses Gut Dispenser for liquid or pasty goods
1 Die Erfindung betrifft einen Spender der im Ober- Oberbegriff des Anspruchs 1 genannten Art.1 The invention relates to a dispenser mentioned in the preamble of claim 1.
Durch die US-PS 4 388 011 ist eine Füllzahnbürste bekannt, die die Merkmale des Spenders der betreffenden Art 5 aufweist, bei dem der Kolben das letzte, geschlossene Teil mehrerer, teleskopartig ineinanderschiebbarer Rohrteile bildet. Zur Veränderung des Volumens des im Inneren der Rohrteile gebildeten Vorratsraumes ist eine Schraubeinrich¬ tung vorgesehen, mit der der Kolben und die übrigen, inein- 10 anderschiebbaren Rohrteile im Sinne einer Verringerung des Volumens des Vorratsraumes zusammendrückbar sind. Durch Schrauben wird also Zahnreinigungsmittel aus dem Vorratsraum durch einen Kanal in den Bereich der Zahnbürste gepreßt. Diese Schraubeinrichtung ist sehr aufwendig. Außerdem ist 15 der maximal mögliche Vorratsraum im Verhältnis zur Außenab¬ messung des Spenders verhältnismäßig gering.From US-PS 4 388 011 a filling toothbrush is known which has the features of the dispenser of the type 5 in question, in which the piston forms the last, closed part of a plurality of telescopically telescopic pipe parts. In order to change the volume of the storage space formed in the interior of the tube parts, a screw device is provided with which the piston and the other tube parts which can be pushed into one another can be compressed in order to reduce the volume of the storage space. Tooth cleaning agent is thus screwed out of the storage space through a channel into the area of the toothbrush. This screwing device is very complex. In addition, the maximum possible storage space is relatively small in relation to the outside dimensions of the dispenser.
In der nicht vorveröffentlichten deutschen Patentan¬ meldung P 39 22 850 ist eine Füllzahnbürste beschrieben, die eine die Volumenänderungseinrichtung einschließende Pumpein- 20 richtung mit einem Ventil aufweist. Das für die Erzielung der Pumpwirkung notwendige Ventil stellt einen besonderen Aufwand dar und schließt außerdem die Gefahr einer Funk¬ tionsunfähigkeit ein.In the not previously published German patent application P 39 22 850, a filling toothbrush is described which has a pump device including the volume change device with a valve. The valve required to achieve the pumping action represents a special effort and also includes the risk of inoperability.
Der Erfindung liegt die Aufgabe zugrunde, einen - -The invention has for its object a - -
Spender der betreffenden Art zu schaffen, der einfacher im Aufbau und sicherer in der Funktion ist.To create donors of the type in question, which is easier to set up and safer to operate.
Die der Erfindung zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst. Der Erfindung liegt der Gedanke zugrunde, ein den Rückfluß von flüssigem oder pastösem Gut, z.B. Zahnreini¬ gungsmittel verhinderndes Flüssigkeitsventil durch mechani¬ sche Mittel zu ersetzen. Diese werden durch eine mechanische Hemmung gebildet, die auf den in dem Zylinder beweglichen Kolben einwirkt und dessen Bewegung im Sinne einer Vergröße¬ rung des Vorratsraumes erschwert oder möglichst verhindert. Das bedeutet, daß sich der Kolben nur in Richtung der Ent¬ leerung des Vorratsraumes bewegen kann. Wenn somit ein Benutzer über das Betätigungsglied die Volumenänderungsem- richtung im Sinne einer Verringerung des Volumens betätigt, um so Füllgut entgegen dem Fließwiderstand aus der Aus¬ trittsöffnung zu drücken, so kann der Kolben aufgrund der mechanischen Hemmung nicht zurückweichen. Aus diesem Grunde läßt sich mit der Volumenänderungseinrichtung ein ausrei- chend hoher Druck erzeugen, um den Fließwiderstand zu über¬ winden und Füllgut zu der Austrittsöffnung zu transportie¬ ren.The object on which the invention is based is achieved by the teaching specified in the characterizing part of claim 1. The invention is based on the idea of controlling the reflux of liquid or pasty material, e.g. To prevent dental cleaning fluid valve by mechanical means. These are formed by a mechanical escapement which acts on the piston which is movable in the cylinder and which makes it more difficult or possible to prevent it from moving in the sense of enlarging the storage space. This means that the piston can only move in the direction of emptying the storage space. Thus, if a user actuates the volume change device in the sense of a reduction in the volume via the actuating member, in order to press the filling material against the flow resistance out of the outlet opening, the piston cannot move back due to the mechanical inhibition. For this reason, the volume change device can generate a sufficiently high pressure to overcome the flow resistance and to transport the filling material to the outlet opening.
Wird das Betätigungsglied wieder entlastet, so ver¬ größert die Volumenänderungseinrichtung wieder ihr Volumen. Jetzt ist der Fließwiderstand wesentlich größer als der verhältnismäßig geringe Reibungswiderstand des Kolbens bei seiner Bewegung im Sinne einer Verkleinerung des Vorratsrau¬ mes. Somit bewegt sich der Kolben in diesem Sinne ungehemmt. Der erfindungsgemäße Spender benötigt für die Förderung des Füllgutes keine komplizierten mechanischenIf the actuator is relieved again, the volume change device increases its volume again. The flow resistance is now substantially greater than the relatively low friction resistance of the piston when it moves in the sense of a reduction in the storage space. The piston thus moves uninhibited in this sense. The dispenser according to the invention does not require any complicated mechanical means for conveying the filling material
Antriebe und keine Flüssigkeitsventile. Er ist daher äußerst einfach im Aufbau, materialsparend und billig. Diese Vortei¬ le fallen besonders bei Füllzahnbürsten, für die der erfin- dungsge äße Spender besonders gut geeignet ist, ins Gewicht, weil es gerade Sinn von Füllzahnbürsten ist, nach Verbrauch des Zahnreinigungsmittels nicht wiederverwendet zu werden, um so den Benutzer zu zwingen, bei Verbrauch einer bestimm- ten Menge von Zahnreinigungsmittel auch eine neue Zahnbür¬ ste, also eine Bürste mit neuen Borsten zu verwenden, was für eine ordentliche Reinigung der Zähne von außerordentli¬ cher Bedeutung ist. Die Art der mechanischen Hemmung kann in verschiede¬ ner, zum Teil jedem Fachmann geläufiger Weise ausgeführt werden. Eine zweckmäßige Ausführungsform ist im Anspruch 2 angegeben. Danach weist die Hemmung in beliebiger Weise in dem Vorratsraum angeordnete Rastvertiefungen auf, in denen sich ein an dem Kolben vorgesehener Rastvorsprung in Rich¬ tung einer Vergrößerung des Vorratsraumes abstützt. Dadurch kann sich der Kolben nur in eine Richtung bewegen, nämlich in Richtung einer Verkleinerung des Vorratsraumes. Die Rastvertiefungen können sich in einer Innenwandung des Zylinders befinden, immer so, daß sie von dem Rastvorsprung des Kolbens erreichbar sind. Eine besonders zweckmäßige Ausführungsform besteht darin, daß sich die Rastvertiefungen auf der Außenwandung eines Rohres befinden, das von der Austrittsöffnung durch eine Öffnung in dem Kolben zu dem der Austrittsöffnung abgewandten Ende des zylinddrischen Vor¬ ratsraumes verläuft. Der Rastvorsprung an dem Kolben ist dabei durch einen lippenförmig ausgebildeten Rand in der Öffnung des Kolbens für das Rohr gebildet.Actuators and no liquid valves. It is therefore extremely simple to set up, saves material and is cheap. These advantages are particularly important in the case of filling toothbrushes, for which the dispenser according to the invention is particularly well suited, because it is precisely the point of filling toothbrushes not to be reused after the tooth cleaning agent has been used up, so as to force the user to do so Consumption of a certain to use a new toothbrush, ie a brush with new bristles, which is of extraordinary importance for a proper cleaning of the teeth. The type of mechanical inhibition can be carried out in various ways, some of which are familiar to any person skilled in the art. An expedient embodiment is specified in claim 2. According to this, the escapement has latching depressions arranged in any manner in the storage space, in which a locking projection provided on the piston is supported in the direction of an enlargement of the storage room. As a result, the piston can only move in one direction, namely in the direction of a reduction in the storage space. The locking recesses can be located in an inner wall of the cylinder, always so that they can be reached from the locking projection of the piston. A particularly expedient embodiment consists in that the latching recesses are located on the outer wall of a tube which runs from the outlet opening through an opening in the piston to the end of the cylindrical storage space facing away from the outlet opening. The locking projection on the piston is formed by a lip-shaped edge in the opening of the piston for the tube.
Die Volumenänderungseinrichtung befindet sich bei dieser zuletzt genannten Ausführungsform zweckmäßigerweise an dem der Austrittsöff ung abgewandten Ende des Vorratsrau¬ mes, wo sie besonders leicht mit einem Daumen betätigbar ist.In this last-mentioned embodiment, the volume change device is expediently located at the end of the storage space facing away from the outlet opening, where it can be actuated particularly easily with a thumb.
Eine andere zweckmäßige Ausführungsform der Hemmung für den Kolben weist zweckmä igerweise eine Lippe, vorzugs¬ weise eine umlaufende Dichtlippe auf, die in radialer und Hemmungsrichtung geneigt an der Innenwandung des Zylinders oder einer Außenwandung eines von der Austrittsöffnung durch eine mit ihrem Rand die Lippe bildende Öffnung in dem Kolben führenden Rohres unter Druck anliegt. In Hemmungsrichtung wird der Rand der Dichtlippe durch Reibung festgehalten und steilt sich dadurch etwas auf, wodurch sich die Reibkraft weiter beträchtlich erhöht und somit die Hemmung bewirkt. In umgekehrter Richtung sind die Verhältnisse umgekehrt. Die Dichtlippe wird durch die Reibung mitgenommen, und ihr Anlagedruck wird verringert. Bei einer besonders zweckmäßigen Ausführungsform der Erfindung ist der Vorratsraum in einem hohlen Handgriff einer Füllzahnbürste gebildet. Dieser Handgriff weist zweck¬ mäßigerweise einen Stiel an seinem einen Ende auf, während am anderen Ende Borsten angeordnet sind, in deren Bereich die Austrittsöffnung f r pastöses Gut, nämlich Zahnreini¬ gungsmittel, angeordnet ist. Die Austrittsöffnung ist über einen in dem Stiel angeordneten Kanal mit dem Vorratsraum verbunden. Dieser Kanal bildet im wesentlichen den Flie߬ widerstand. Anhand der Zeichnung soll die Erfindung an einem Aus- führungsbeispie'l näher erläutert werden.Another expedient embodiment of the escapement for the piston expediently has a lip, preferably a circumferential sealing lip, which is inclined in the radial and escapement direction on the inner wall of the cylinder or on an outer wall of one of the outlet opening through an opening forming the lip with its edge is under pressure in the piston guiding tube. In the direction of inhibition, the edge of the sealing lip is held in place by friction and thereby steepens somewhat, which increases the frictional force further increased considerably and thus caused the inhibition. The situation is reversed in the opposite direction. The sealing lip is entrained by the friction and its contact pressure is reduced. In a particularly expedient embodiment of the invention, the storage space is formed in a hollow handle of a filling toothbrush. This handle expediently has a handle at one end, while bristles are arranged at the other end, in the area of which the outlet opening for pasty material, namely tooth cleaning agent, is arranged. The outlet opening is connected to the storage space via a channel arranged in the stem. This channel essentially forms the flow resistance. The invention is to be explained in more detail using an exemplary embodiment with the aid of the drawing.
Fig. 1 zeigt ein Ausführungsbeispiel eines Spenders in Anwendung bei einer FüllZahnbürste gemäß der Erfindung im Längsschnitt undFig. 1 shows an embodiment of a dispenser in use with a filling toothbrush according to the invention in longitudinal section and
Fig. 2 zeigt einen vergrößerten Ausschnitt II aus Fig. 1.FIG. 2 shows an enlarged section II from FIG. 1.
Die in der Zeichnung dargestellte FüllZahnbürste weist einen hohlen Handgriff 1 auf, in dem sich ein Vorrats¬ raum 2 für Zahnreinigungsmittel befindet. Am oberen Ende des Handgriffs 1 befindet sich ein Stiel 3, in dem sich eine Austrittsöffnung 4 im Bereich von Borsten 5 befindet. Die Austrittsöffnung 4 ist über einen Kanal 6 mit dem Vorrats- räum 2 verbunden. Zwischen dem Kanal 6 und dem Vorratsraum 2 befindet sich eine Volumenänderungseinrichtung 7 mit einem Betätigungsglied 8 in Form einer eindrückbaren Membran.The filling toothbrush shown in the drawing has a hollow handle 1 in which there is a storage space 2 for tooth cleaning agents. At the upper end of the handle 1 there is a handle 3 in which there is an outlet opening 4 in the area of bristles 5. The outlet opening 4 is connected to the storage space 2 via a channel 6. Between the channel 6 and the storage space 2 there is a volume change device 7 with an actuating element 8 in the form of a compressible membrane.
Das Innere des Handgriffs 1 ist in zwei Stufen zylin¬ drisch ausgebildet mit Zylinderabschnitten 9 und 10, deren Durchmesser bzw. Querschnitt stufig verschieden ist, und zwar ist der der Volumenänderungseinrichtung 7 näher liegen¬ de Zylinderabschnitt 10 in seinem Querschnitt größer als der Zylinderabschnitt 9.The interior of the handle 1 is cylindrical in two stages with cylinder sections 9 and 10, the diameter or cross section of which varies in stages, namely the cross section of the cylinder section 10 closer to the volume changing device 7 than that Cylinder section 9.
In dem Zylinderabschnitt 9 befindet sich ein Kolben 11, der mit einer zylinderartigen Dichtlippe 12 an der Innenwandung des Zylinderabschnittes 9 anliegt. Außerdem ist eine innere Dichtlippe 13 vorgesehen, mit der der Kolben 11 ein Rohr 14 umschließt, das den Vorratsraum 2 im Bereich der Volumenänderungseinrichtung 7 mit dem Stiel 3 verbindet und dessen Inneres einen Teil des Kanals 6 bildet.In the cylinder section 9 there is a piston 11, which rests with a cylinder-like sealing lip 12 on the inner wall of the cylinder section 9. In addition, an inner sealing lip 13 is provided, with which the piston 11 surrounds a tube 14, which connects the storage space 2 in the area of the volume change device 7 with the stem 3 and whose interior forms part of the channel 6.
In dem Zylinderabschnitt 10 mit größerem Durchmesser befindet sich ein Kolben 15, der mit einer zylindrischen, umlaufenden Dichtlippe 16 an der Wandung des Zylinderab¬ schnitts 10 anliegt. Er ist ringförmig ausgebildet, wobei eine zylindrische Ringfläche 17 den gleichen Innendurchmes¬ ser hat wie der Zylinderabschnitt 9 und damit in der Lage ist, den Kolben 11 dicht aufzunehmen. Er stößt dabei an einen als radialen Innenvorsprung ausgebildeten Anschlag 18 an.In the cylinder section 10 with a larger diameter there is a piston 15, which bears against the wall of the cylinder section 10 with a cylindrical, circumferential sealing lip 16. It is ring-shaped, a cylindrical ring surface 17 having the same inner diameter as the cylinder section 9 and thus being able to receive the piston 11 in a sealed manner. It abuts a stop 18 designed as a radial inner projection.
Ein Boden 19 des Vorratsraumes 2 ist komplementär zu der zugewandten Fläche des Kolbens 11 bzw. des Kolbens 15 ausgebildet, so daß dann, wenn sich die Kolben 11 und 15 in der in der Zeichnung tiefsten Stellung befinden, kein toter Raum mehr zwischen den Kolben 11 und 15 und dem Boden 19 vorhanden ist, so daß sämtliches Zahnreinigungsmittel ent¬ leert werden kann. Der Boden 19 hält außerdem das untere Ende des Rohres 14 und klemmt mit seinem äußeren Rand den äußeren Rand der das Betätigungsglied 8 bildenden Membran fest gegen die Innenwandung des Handgriffs 1.A bottom 19 of the storage space 2 is complementary to the facing surface of the piston 11 or the piston 15, so that when the pistons 11 and 15 are in the lowest position in the drawing, there is no more dead space between the pistons 11 and 15 and the bottom 19 is present, so that all tooth cleaning agents can be emptied. The bottom 19 also holds the lower end of the tube 14 and clamps with its outer edge the outer edge of the membrane forming the actuator 8 firmly against the inner wall of the handle 1.
Erfindungsgemäß weist das Rohr 14 auf seiner Außen¬ wandung 20 wegen ihrer Kleinheit in Fig. 1 kaum sichtbare, in dem vergrößerten Ausschnitt in Fig. 2 jedoch deutlich erkennbare, sägezahnf rmige Rastvertiefungen 21 auf, in die die radial nachgiebige Dichtlippe 13 des Kolbens 11 einra¬ sten kann.According to the invention, the tube 14 has on its outer wall 20 due to its small size in FIG. 1, but in the enlarged section in FIG. 2 clearly recognizable sawtooth-shaped locking recesses 21, into which the radially flexible sealing lip 13 of the piston 11 engages ¬ most can.
Bei Benutzung der dargestellten Füllzahnbürste wird durch Drücken auf das als Membran ausgebildete Betätigungs¬ glied 8 das Volumen im Bereich der Volumenänderungseinrich¬ tung 7 und damit insgesamt in dem Vorratsraum 2 verkleinert. Dadurch wird in dem Vorratsraum 2 befindliches Zahnreini¬ gungsmittel in das Rohr 14 und weiter durch den Kanal 6 zu der Austrittsöffnung 4 und damit zu den Borsten 5 gedrückt. Bei Entlastung des Drucks auf das Betätigungsglied 8 sucht dieses zurückzufedern, so daß ein Unterdruck in dem Vorrats¬ raum 2 besteht, der auf die Unterseite des Kolbens 11 ein¬ wirkt, so daß dieser sich im Sinne einer Verkleinerung des Vorratsraumes in Richtung auf die Volumenänderungseinrich¬ tung 7 verschiebt. Dabei gleitet die Dichtlippe 13 je nach Dimensionierung über wenigstens einen der durch die Rastver¬ tiefungen 21 gebildeten Zähne hinweg und rastet in die nächste Rastvertiefung 21 ein, so daß sich die Dichtlippe 13 wieder in dieser Rastvertiefung abstützt. Bei erneutem Drücken auf das Betätigungsglied 8 wiederholt sich der Vorgang. Der Abstand der Rastvertiefungen 21 ist natürlich so gewählt, daß bei einem Hub der Betätigungseinrichtung die Dichtlippe 13 wenigstens in der nächsten der Rastvertiefun¬ gen 21 einrastet. Die Dichtlippe 13 liegt beim Gleiten auf der Oberfläche 20 des Rohres 14 in jeder Lage aufgrund ihrer radialen Anpressung dicht auf der Oberfläche 20 auf, ganz gleich, ob sie sich in einer Rastvertiefung 21 befindet oder auf der Oberfläche der zwischen ihnen gebildeten, sägezahn- förmigen Vorsprünge.When the filling toothbrush shown is used, the volume in the area of the volume change device 7 and thus in total in the storage space 2 is reduced by pressing on the actuating member 8 designed as a membrane. As a result, tooth cleaning agent located in the storage space 2 is pressed into the pipe 14 and further through the channel 6 to the outlet opening 4 and thus to the bristles 5. When the pressure on the actuating member 8 is relieved, the latter tries to spring back, so that there is a negative pressure in the storage space 2, which acts on the underside of the piston 11, so that it acts in the sense of a reduction in the storage space in the direction of the volume change device ¬ device 7 moves. Depending on the dimensions, the sealing lip 13 slides over at least one of the teeth formed by the locking recesses 21 and engages in the next locking recess 21, so that the sealing lip 13 is supported in this locking recess again. When the actuator 8 is pressed again, the process is repeated. The distance between the locking recesses 21 is of course chosen such that when the actuating device is lifted, the sealing lip 13 engages at least in the next of the locking recesses 21. When sliding on the surface 20 of the tube 14, the sealing lip 13 rests tightly on the surface 20 in any position due to its radial pressure, irrespective of whether it is located in a locking recess 21 or on the surface of the sawtooth-shaped one formed between them Ledges.
Aus Fig. 2 ist zu erkennen, daß die Dichtlippe 13 ra- dial nach innen und in Hemmungsrichtung geneigt verläuft.It can be seen from FIG. 2 that the sealing lip 13 extends radially inwards and inclines in the direction of inhibition.
Ist diese Neigung ausreichend steil , so können die Rastver¬ tiefungen 21 unter Umständen ganz entfallen, weil in Hem¬ mungsrichtung ein Aufsteilen der Dichtlippe 13 durch die Reibung auf der Oberfläche 20 des Rohreds 14 erfolgt, wo- durch die Reibung beträchtlich erhöht und eine Bewegung des Kolbens 11 in Hemmungsrichtung verhindert wird.If this inclination is sufficiently steep, the locking recesses 21 can possibly be dispensed with entirely, because in the direction of inhibition the sealing lip 13 is divided by the friction on the surface 20 of the tubular rim 14, which considerably increases the friction and causes movement of the piston 11 is prevented in the direction of inhibition.
Die Zylinderabschnitte 9 und 10 bilden zusammen ein gesondertes Teil, ebenso das Rohr 14 und der Boden 19. Das Rohr 14 ist von dem Stiel 3 trennbar. Somit sind die Zylin- derabschnitte 9, 10 mit den darin befindlichen Kolben 11, 15 und Rohr 14 und Boden 19 mit dem Betätigungsglied 8 aus dem Handgriff 1 herausnehmbar und durch eine entsprechende Teilekombination 9, 10; 11, 15; 14, 19 ersetzbar, bei der der Vorratsraum 2 gefüllt ist. The cylinder sections 9 and 10 together form a separate part, as well as the tube 14 and the bottom 19. The tube 14 is separable from the stem 3. The cylinder sections 9, 10 with the pistons 11, 15 and the tube 14 and base 19 with the actuating element 8 can thus be removed from the handle 1 and by a corresponding one Parts combination 9, 10; 11, 15; 14, 19 replaceable, in which the storage space 2 is filled.

Claims

- ff -Patentansprüche - ff -patent claims
1. Spender für flüssiges oder pastöses Gut, mit einem zylindrischen, durch einen beweglichen Kolben verschlossenen Vorratsraum für das Gut, der über einen Fließwiderstand mit einer Austrittsöffnung und mit einer Volumenänderungsein- richtung verbunden ist, dadurch gekennzeichnet, daß eine mechanische Hemmung vorgesehen ist, die eine Bewegung des Kolbens (11) im Sinne einer Vergrößerung des Vorratsraumes (2) erschwert oder verhindert.1. Dispenser for liquid or pasty goods, with a cylindrical storage space for the goods, closed by a movable piston, which is connected via a flow resistance to an outlet opening and to a volume change device, characterized in that mechanical inhibition is provided which movement of the piston (11) in the sense of enlarging the storage space (2) is made more difficult or prevented.
2. Spender nach Anspruch 1, dadurch gekennzeichnet, daß die Hemmung in dem Vorratsraum (2) angeordnete Rastvertie¬ fungen (21) aufweist, in denen sich ein an dem Kolben (11) vorgesehener Rastvorsprung in Richtung einer Vergrößerung des Vorratsraumes (2) abstützt.2. Dispenser according to claim 1, characterized in that the escapement in the storage space (2) has Rastvertie¬ openings (21) in which a provided on the piston (11) locking projection in the direction of an enlargement of the storage space (2) is supported .
3. Spender nach Anspruch 2, dadurch gekennzeichnet, daß sich die Rastvertief ngen in einer Innenwandung des Zylin¬ ders (9, 10) befinden.3. Dispenser according to claim 2, characterized in that the locking recesses are in an inner wall of the cylinder (9, 10).
4. Spender nach Anspruch 2, dadurch gekennzeichnet, daß der Rastvorsprung an dem Kolben (11) durch eine umlaufende Dichtlippe (13) gebildet ist. 4. Dispenser according to claim 2, characterized in that the latching projection on the piston (11) is formed by a circumferential sealing lip (13).
5. Spender nach Anspruch 2, dadurch gekennzeichnet, daß die Rastvertiefungen (21) auf der Außenwandung (20) eines Rohres (14) angeordnet sind, das von der Austrittsöffnung (4) durch eine Öffnung in dem Kolben (11) zu dem der Aus- trittsöffnung (4) abgewandten Ende des zylindrischen Vor¬ ratsraumes (2) verläuft, und daß der Rastvorsprung an dem Kolben (11) durch einen lippenförmig ausgebildeten Rand in der Öffnung des Kolbens (11) gebildet ist.5. Dispenser according to claim 2, characterized in that the locking recesses (21) on the outer wall (20) of a tube (14) are arranged, which from the outlet opening (4) through an opening in the piston (11) to which the off - The opening (4) facing away from the end of the cylindrical storage space (2) runs, and that the locking projection on the piston (11) is formed by a lip-shaped edge in the opening of the piston (11).
6. Spender nach Anspruch 5, dadurch gekennzeichnet, daß sich die Volumenänderungseinrichtung (7) an dem der Aus¬ trittsöffnung (4) abgewandten Ende des Vorratsraumes (2) befindet.6. Dispenser according to claim 5, characterized in that the volume change device (7) is located at the end of the storage space (2) facing away from the outlet opening (4).
7. Spender nach Anspruch 6, dadurch gekennzeichnet, daß zu der Volumenänderungseinrichtung (7) hin wenigstens ein weiterer Zylinderabschnitt (10) stufig vergrößerten Durch¬ messers vorgesehen ist, in dem sich jeweils ein weiterer, ringförmiger Kolben (15) befindet, der mit seinem Inneren für den benachbarten Kolben (11) in dem angrenzenden Zylin¬ derabschnitt (9) geringeren Durchmessers eine dichte Aufnah¬ me mit einem Anschlag bildet.7. Dispenser according to claim 6, characterized in that to the volume changing device (7) at least one further cylinder section (10) stepwise enlarged diameter is provided, in each of which a further annular piston (15) is located, with its Inside for the adjacent piston (11) in the adjacent cylinder section (9) of smaller diameter forms a tight receptacle with a stop.
8. Spender nach Anspruch 1, dadurch gekennzeichnet, daß die Hemmung durch eine Lippe, vorzugsweise durch eine umlau¬ fende Dichtlippe (13) gebildet ist, die in radialer und Hemmungsrichtung geneigt an der Innenwandung des Zylinders (9, 10) oder einer Außenwandung (20) eines von der Aus¬ trittsöffnung (4) durch eine mit ihrem Rand die Dichtlippe (13) bildende Öffnung in dem Kolben (11) führenden Rohres (14) unter Druck anliegt.8. Dispenser according to claim 1, characterized in that the escapement is formed by a lip, preferably by a circumferential sealing lip (13) which is inclined in the radial and escapement direction on the inner wall of the cylinder (9, 10) or an outer wall ( 20) one of the outlet opening (4) bears under pressure through a pipe (14) leading through the opening forming the sealing lip (13) in the piston (11).
9. Spender nach Anspruch 1, dadurch gekennzeichnet, daß der zylindrische Vorratsraum (2) durch einen in den Spender einsetzbaren Zylinder (9, 10) gebildet ist. - /© -9. Dispenser according to claim 1, characterized in that the cylindrical storage space (2) is formed by a cylinder (9, 10) which can be inserted into the dispenser. - / © -
10. Spender nach Anspruch 9, dadurch gekennzeichnet, daß der Vorratsraum (2) in einem hohlen Handgriff einer Füll¬ zahnbürste gebildet ist.10. Dispenser according to claim 9, characterized in that the storage space (2) is formed in a hollow handle of a filling toothbrush.
11. Spender nach Anspruch 9, gekennzeichnet durch einen Stiel am einen Ende des Handgriffs, durch Borsten am freien Ende des Stieles, in deren Bereich die Austrittsöff ung (4) angeordnet ist, die über einem in dem Stiel angeordneten, im wesentlichen den Fließwiderstand bildenden Kanal (6) mit dem Vorratsraum (2) verbunden ist.11. Dispenser according to claim 9, characterized by a handle at one end of the handle, by bristles at the free end of the handle, in the region of which the outlet opening (4) is arranged, which is arranged over the one in the handle, essentially forming the flow resistance Channel (6) is connected to the storage room (2).
12. Spender nach Anspruch 5, dadurch gekennzeichnet, daß der zylindrische Vorratsraum durch einen in den Spender einsetzbaren Zylinder (9, 10) gebildet ist und daß der Stiel (3) auf einem über den Kolben (11) vorspringenden Ende des Rohres (14) befestigt ist. 12. Dispenser according to claim 5, characterized in that the cylindrical storage space is formed by a cylinder (9, 10) which can be inserted into the dispenser and in that the stem (3) projects from one end of the tube (14) projecting over the piston (11). is attached.
PCT/EP1991/000381 1990-03-09 1991-03-01 Dispenser for liquid or paste materials WO1991013569A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP91905269A EP0518919B1 (en) 1990-03-09 1991-03-01 Dispenser for liquid or paste materials
DE59102511T DE59102511D1 (en) 1990-03-09 1991-03-01 DISPENSER FOR LIQUID OR PASTY GOODS.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4007472.2 1990-03-09
DE4007472 1990-03-09
DE4021697A DE4021697A1 (en) 1990-03-09 1990-07-07 DISPENSER FOR LIQUID OR PASTOESES
DEP4021697.7 1990-07-07

Publications (1)

Publication Number Publication Date
WO1991013569A1 true WO1991013569A1 (en) 1991-09-19

Family

ID=25890953

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/000381 WO1991013569A1 (en) 1990-03-09 1991-03-01 Dispenser for liquid or paste materials

Country Status (5)

Country Link
EP (1) EP0518919B1 (en)
AT (1) ATE109631T1 (en)
AU (1) AU7347891A (en)
DE (2) DE4021697A1 (en)
WO (1) WO1991013569A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP2674063A3 (en) * 2009-12-23 2015-04-29 Colgate-Palmolive Company Oral care system and method of using an oral care system

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
WO2019233546A1 (en) * 2018-06-04 2019-12-12 Gemü Gmbh Applicator

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GB264733A (en) * 1926-07-13 1927-01-27 Thomas Seagrave Lord Improvements in and connected with fountain tooth brushes
GB2085717A (en) * 1980-09-25 1982-05-06 Blackwell Victor Campbell Reservoir toothbrush
GB2172796A (en) * 1985-03-25 1986-10-01 Colin Stanley Jackson Toothbrush with integral toothpaste supply

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US3703765A (en) * 1971-08-04 1972-11-28 Gregorio A Perez Disposable razor
US4014463A (en) * 1975-11-28 1977-03-29 Kenics Corporation Plural component dispenser
US4388011A (en) * 1979-09-20 1983-06-14 Smith Donald R Material dispenser toothbrush
US4437584A (en) * 1981-08-28 1984-03-20 Colgate-Palmolive Company Toothpaste dispenser
US4487341A (en) * 1981-10-01 1984-12-11 Colgate-Palmolive Company Dispenser for dispensing creams and especially self-foaming gels
DE3521580A1 (en) * 1985-02-21 1986-08-21 Bayer Ag, 5090 Leverkusen OUTPUT DEVICE FOR FLOWABLE MEDIA
DE3603475C1 (en) * 1986-02-05 1987-07-02 Hertrampf Michael Fillable toothbrush
DE3618399A1 (en) * 1986-05-31 1987-12-03 Bramlage Gmbh Dispenser

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Publication number Priority date Publication date Assignee Title
GB264733A (en) * 1926-07-13 1927-01-27 Thomas Seagrave Lord Improvements in and connected with fountain tooth brushes
GB2085717A (en) * 1980-09-25 1982-05-06 Blackwell Victor Campbell Reservoir toothbrush
GB2172796A (en) * 1985-03-25 1986-10-01 Colin Stanley Jackson Toothbrush with integral toothpaste supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2674063A3 (en) * 2009-12-23 2015-04-29 Colgate-Palmolive Company Oral care system and method of using an oral care system

Also Published As

Publication number Publication date
EP0518919B1 (en) 1994-08-10
AU7347891A (en) 1991-10-10
ATE109631T1 (en) 1994-08-15
DE4021697A1 (en) 1991-09-12
DE59102511D1 (en) 1994-09-15
EP0518919A1 (en) 1992-12-23

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