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WO2011091544A1 - Drive device and piston pump having a drive device - Google Patents

Drive device and piston pump having a drive device Download PDF

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Publication number
WO2011091544A1
WO2011091544A1 PCT/CH2011/000001 CH2011000001W WO2011091544A1 WO 2011091544 A1 WO2011091544 A1 WO 2011091544A1 CH 2011000001 W CH2011000001 W CH 2011000001W WO 2011091544 A1 WO2011091544 A1 WO 2011091544A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
drive housing
piston
helical spring
drive device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CH2011/000001
Other languages
German (de)
French (fr)
Inventor
Edgar Probst
Alain Probst
Ralph Probst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PROWATEC AG
Original Assignee
PROWATEC AG
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 PROWATEC AG filed Critical PROWATEC AG
Publication of WO2011091544A1 publication Critical patent/WO2011091544A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B33/00—Pumps actuated by muscle power, e.g. for inflating
    • F04B33/02—Pumps actuated by muscle power, e.g. for inflating with intermediate gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0113—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like the piston rod being flexible or articulated

Definitions

  • the invention relates to a drive device according to the preamble of independent claim 1.
  • the invention also relates to a piston pump according to the preamble of claim 11.
  • piston pumps are often used.
  • the advance of the piston is often carried out by means of a drive device which converts a manauelle rotational movement in a suitable translational thrust movement.
  • this implementation is realized by means of spindles or racks or the like.
  • the use of spindles or racks is particularly disadvantageous when using the drive device in bulk goods.
  • spindles passing through spindles often sealing problems and is also the filling or refilling of the dispenser problematic, since here before filling the contents of the piston must first be moved back to its original position and thus there is a risk of air bubbles during filling.
  • a drive device of the generic type is to be improved, while avoiding the mentioned problems of known devices, in such a way that it is very small and structurally very easy to implement and is especially suitable for use in bulk goods.
  • piston pump is the subject of claim 11.
  • a drive device for linear shock displacement of an object to be moved comprises a winding spool rotatably arranged in a drive housing, which is rotationally drivable by a drive cap rotatable relative to the drive housing.
  • an elongated coil spring is provided which is attached at one end to the reel spool and by winding the reel spool can be unwound therefrom or unwound therefrom.
  • a guide channel is provided, through which the coil spring extends and is led out of the drive housing.
  • the winding spool and the drive cap are preferably rotatable about two mutually perpendicular axes and are kinematically coupled by means of meshing sprockets, wherein advantageously one of the sprockets is formed integrally with the drive cap and the other sprocket is integrally formed with a shaft rotatably mounted in the drive housing.
  • the winding bobbin is provided at its periphery with a helical winding groove and slidably disposed in the longitudinal direction on a shaft and rotatably coupled to the shaft.
  • the winding or unwinding process is organized and virtually frictionless.
  • the guide channel opens out coaxially with the drive cap from the drive housing.
  • the coil spring is wound so tightly that adjacent turns of the coil spring substantially abut each other when the coil spring is not wound up. This gives the coil spring in its longitudinal direction a sufficiently large (compressive) stiffness, which is suitable for the impact displacement of a linearly driven object.
  • the drive housing it is particularly expedient for the drive housing to be fastened to one end of the pump tube, wherein the section of the helical spring protruding from the drive housing runs coaxially with the pump tube.
  • the piston is provided with a matching to a fitting piece of the coil spring Zentriermulde which fixes the coil spring in its coaxial alignment, wherein the piston and coil spring are preferably coupled only to thrust.
  • the piston pump is designed as a dispenser for a dispensed filling.
  • a toothbrush attachment with a handle part and a brush part provided with bristles can be detachably fastened to the pump tube, the handle part having a supply channel through which toothpaste can be conveyed out of the pump tube into the region of the bristles.
  • Fig. 2 is an axial section along the line II-II of Fig. 1 with an attached
  • Fig. 3 shows a cross section through the drive device according to the line III-III of
  • the illustrated drive device comprises an externally substantially cylindrical drive housing 10 which receives a sprocket 12 designed as a spur gear and a winding spool 14.
  • the sprocket or spur gear 12 is integrally formed with a shaft 16 which extends transversely to the longitudinal axis A of the drive housing 10 and is rotatably mounted in the drive housing 10.
  • the axis of the shaft 16 and the reel spool 14 is designated B.
  • the winding spool 14 is non-rotatably but axially freely slidably mounted on the shaft 16.
  • the rotationally fixed coupling between the winding spool 14 and shaft 16 is characterized by a non-circular, e.g. square cross-sectional shape of the central portion of the shaft 16 realized.
  • a drive cap 20 is arranged rotatably about the longitudinal axis A.
  • the drive cap 20 has on its inside an integrally molded pinion gear 22 which engages in the pinion or spur gear 12, so that by a Rotation of the drive cap 20, a rotation of the shaft 16 and thus finally the winding coil 14 is effected.
  • the drive housing 10 is formed in two parts, wherein the interface or
  • Parting plane extends axially and through the guide channel 11.
  • the parting line is shown in Fig. 2 by the section line I-I.
  • the winding reel 14 has at its periphery a multi-turn winding groove 15.
  • a part of an elastic shock member in the form of a coil spring 18 is wound and secured with its wound end to the reel spool 14.
  • the free, unwound end of the coil spring 18 extends through a formed in the drive housing 10 guide channel 11, which opens axially from the drive housing 10.
  • the located outside of the drive housing 10 portion of the coil spring 18 is rectilinear and extends exactly coaxial with the drive housing 10.
  • a fitting piece 19 is attached.
  • the provided with the fitting piece 19 end of the coil spring 18 moves by the rotation of the drive cap 20 so linear coaxial with the drive housing 10.
  • the reel spool 14 moves on the shaft 16 so that it is not too undesirable Deadlocks of the coil spring 18 may come within the drive housing.
  • the coil spring 18 is tightly wound, wherein in the unwound state of the coil spring, the individual turns practically abut each other.
  • the coil spring in its longitudinal direction has a relatively large (compressive) rigidity, which makes it suitable for the impact displacement of a linearly driven object.
  • the inventive drive device is shown in use in a piston pump which forms a dispenser for a dispensed product. More specifically, the dispenser is part of a toothbrush with integrated paste dispenser.
  • the designated as a whole with 30, designed as a piston pump (toothpaste) dispenser comprises a cylindrical pump tube 32, in which a piston 34 is arranged coaxially displaceable. In the space 36 above the piston 34 is in practical use the contents, in this example toothpaste.
  • the tube 32 is provided with a nozzle 38.
  • the drive housing 10 of the drive device is inserted into the lower end of the tube 32.
  • the drive cap 20 is snapped with an annular bead 24 into an annular groove 33 of the tube 32 and thereby holds itself and the drive housing 10 firmly on or in the tube 32.
  • a toothbrush attachment 40 is screwed with a handle part 41 and a brush part 43 equipped with bristles 42.
  • the stem part 41 has a feed channel 44 which on the one hand communicates with the nozzle 38 in a communicating connection and on the other hand opens out in the region of the bristles 42.
  • the filling or refilling of the dispenser 30 takes place when the toothbrush attachment 40 has not yet been mounted or removed.
  • the helical spring 18 is wound almost completely onto the reel spool 14 so that its free end projects only slightly into the lower end of the tube 32.
  • toothpaste is filled through the nozzle 38 into the tube 32, whereby the piston 34 moves to its lower stop.
  • the toothbrush attachment 40 is (again) screwed onto the dispenser 30. Since the coil spring acting as a thrust member 18 is not connected to train with the piston 34, the piston can remain in its (upper) end position before filling. This in turn avoids the risk of air pockets during filling.
  • the coil spring 18 is unwound until the fitting 19 comes into abutment against the piston 34.
  • the piston 34 is provided with a form-fitting to the fitting piece 19 centering 35, which ensures that the coil spring 18 is held coaxially to the tube 32 and can not break out laterally.
  • the drive cap 20 By further rotation of the drive cap 20, the coil spring 18 is now further extended and the piston 34 thereby displaced.
  • toothpaste located above the piston 34 in the space 36 is in turn squeezed out through the nozzle 38 and conveyed via the feed channel 44 into the area of the bristles 42.
  • the drive device according to the invention is not only suitable for moving pistons in piston pumps serving as paste dispensers or other dispensers, but can in principle be used wherever a reaction is required. nismatisch short-stroke linear feed is required, which requires no excessive shear forces.
  • the inventive drive device can be structurally kept very small and is structurally less expensive and can be realized very cost, for example in plastic injection technology, so that it is ideally suited for use in mass-produced articles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Brushes (AREA)

Abstract

The invention relates to a drive device for linearly and joltingly moving an object to be moved comprising a winding reel (14), which is rotatably arranged in a drive housing (10) and which can be rotationally driven by a drive cap (20) that can be rotated relative to the drive housing (10). An elongated coil spring (18), which is fastened at one end to the winding reel (14) and can be wound onto the winding reel or unwound from the winding reel by rotating the winding reel, is provided as a jolting element for the object to be moved. A guide channel (11) is provided in the drive housing (10), through which guide channel the coil spring (18) extends and is lead out of the drive housing (10). The drive device can generally be used anywhere where a relatively short-stroke linear feed operating by pushing is needed and said linear feed does not require excessively large pushing forces. The size of the drive device can be kept small, and the drive device has an inexpensive design. Therefore the drive device is best suited for use in mass-produced items.

Description

Antriebsvorrichtung und Kolbenpumpe mit Antriebsvorrichtung  Drive device and piston pump with drive device

Die Erfindung betrifft eine Antriebsvorrichtung gemäss dem Oberbegriff des unabhängigen Anspruchs 1. Die Erfindung betrifft auch eine Kolbenpumpe gemäss dem Oberbegriff des Anspruchs 11. The invention relates to a drive device according to the preamble of independent claim 1. The invention also relates to a piston pump according to the preamble of claim 11.

In Abgabevorrichtungen für flüssiges oder pastöses Füllgut, sog. Spendern, werden häufig Kolbenpumpen eingesetzt. Der Vorschub des Kolbens erfolgt dabei häufig mittels einer Antriebsvorrichtung, die eine manauelle Rotationsbewegung in eine geeignete translatorische Schubbewegung umsetzt. Im Allgemeinen wird diese Umsetzung mittels Spindeln oder Zahnstangen oder dergleichen realisiert. Die Verwendung von Spindeln oder Zahnstangen ist insbesondere beim Einsatz der Antriebsvorrichtung in Massengütern unvorteilhaft. So entstehen z.B. bei den Kolben durchsetzenden Spindeln häufig Dichtungsprobleme und ist auch die Befüllung bzw. Wiederbefüllung der Spender problematischer, da hier vor dem Einfüllen des Füllguts zuerst der Kolben in seine Ausgangsstellung zurückbewegt werden muss und dadurch dann die Gefahr von Lufteinschlüssen beim Befüllen besteht. In dispensers for liquid or pasty contents, so-called donors, piston pumps are often used. The advance of the piston is often carried out by means of a drive device which converts a manauelle rotational movement in a suitable translational thrust movement. In general, this implementation is realized by means of spindles or racks or the like. The use of spindles or racks is particularly disadvantageous when using the drive device in bulk goods. Thus, e.g. in spindles passing through spindles often sealing problems and is also the filling or refilling of the dispenser problematic, since here before filling the contents of the piston must first be moved back to its original position and thus there is a risk of air bubbles during filling.

Durch die vorliegende Erfindung soll nun eine Antriebsvorrichtung der gattungsge- mässen Art unter Vermeidung der genannten Probleme bekannter Vorrichtungen dahingehend verbessert werden, dass sie sehr klein und konstruktiv sehr einfach zu realisieren und speziell für den Einsatz in Massengütern geeignet ist. By means of the present invention, a drive device of the generic type is to be improved, while avoiding the mentioned problems of known devices, in such a way that it is very small and structurally very easy to implement and is especially suitable for use in bulk goods.

Die Lösung dieser der Erfindung zugrundeliegenden Aufgabe besteht in der Antriebsvorrichtung gemäss den Merkmalen des unabhängigen Anspruchs 1. The solution of this problem underlying the invention consists in the drive device according to the features of the independent claim 1.

Eine mit einer solchen erfindungsgemässen Antriebsvorrichtung ausgestattete Kolbenpumpe ist Gegenstand des Anspruchs 11. An equipped with such a drive device according to the invention piston pump is the subject of claim 11.

Zweckmässige und besonders vorteilhafte weitere Ausgestaltungen der erfindungsgemässen Antriebsvorrichtung und der erfindungsgemässen Kolbenpumpe sind Gegenstand der abhängigen Ansprüche 2-10 bzw. 12-14. Das Wesen der erfindungsgemässen Antriebs Vorrichtung besteht in Folgendem: Eine Antriebsvorrichtung zur linearen Stoss- Verschiebung eines zu bewegenden Objekts umfasst eine in einem Antriebsgehäuse drehbar angeordnete Wickelspule, die durch eine relativ zum Antriebsgehäuse drehbare Antriebskappe drehend antreibbar ist. Als Stossorgan für das zu bewegende Objekt ist eine langgestreckte Schraubenfeder vorgesehen, die mit einem Ende an der Wickelspule befestigt ist und durch Drehen der Wickelspule auf diese aufwickelbar bzw. von dieser abwickelbar ist. Im Antriebsgehäuse ist ein Führungskanal vorgesehen, durch welchen die Schraubenfeder verläuft und aus dem Antriebsgehäuse herausgeführt ist. Durch die Verwendung einer Schrau- benfeder als Stossorgan kann das Bauvolumen der Antriebsvorrichtung besonders gering gehalten werden. Advantageous and particularly advantageous further embodiments of the inventive drive device and the inventive piston pump are the subject of the dependent claims 2-10 and 12-14. The essence of the drive device according to the invention consists in the following: A drive device for linear shock displacement of an object to be moved comprises a winding spool rotatably arranged in a drive housing, which is rotationally drivable by a drive cap rotatable relative to the drive housing. As an impact member for the object to be moved, an elongated coil spring is provided which is attached at one end to the reel spool and by winding the reel spool can be unwound therefrom or unwound therefrom. In the drive housing, a guide channel is provided, through which the coil spring extends and is led out of the drive housing. By using a screw spring as the impact element, the construction volume of the drive device can be kept particularly low.

Bevorzugt sind die Wickelspule und die Antriebskappe um zwei zu einander senkrechte Achsen drehbar und mittels kämmender Zahnritzel kinematisch gekoppelt, wo- bei vorteilhafterweise eines der Zahnritzel einstückig mit der Antriebskappe und das andere Zahnritzel einstückig mit einer im Antriebsgehäuse drehbar gelagerten Welle ausgebildet ist. The winding spool and the drive cap are preferably rotatable about two mutually perpendicular axes and are kinematically coupled by means of meshing sprockets, wherein advantageously one of the sprockets is formed integrally with the drive cap and the other sprocket is integrally formed with a shaft rotatably mounted in the drive housing.

Zweckmässigerweise ist die Wickelspule an ihrem Umfang mit einer schraubenlinien- förmigen Wickelrille versehen und in Längsrichtung gleitend auf einer Welle angeordnet und mit der Welle drehfest gekoppelt. Dadurch verläuft der Auf- bzw. Abwickelvorgang geordnet und praktisch reibungsfrei. Conveniently, the winding bobbin is provided at its periphery with a helical winding groove and slidably disposed in the longitudinal direction on a shaft and rotatably coupled to the shaft. As a result, the winding or unwinding process is organized and virtually frictionless.

Vorteilhaft ist es ferner, wenn der Führungskanal koaxial zur Antriebskappe aus dem Antriebsgehäuse ausmündet. It is also advantageous if the guide channel opens out coaxially with the drive cap from the drive housing.

Weiters ist es vorteilhaft, wenn die Schraubenfeder so eng gewickelt ist, dass benachbarte Windungen der Schraubenfeder im Wesentlichen aneinander anliegen, wenn die Schraubenfeder nicht aufgewickelt ist. Dies verleiht der Schraubenfeder in ihrer Längsrichtung eine ausreichend grosse (Druck-)Steifigkeit, welche für die Stoss- Verschiebung eines linear anzutreibenden Objekts geeignet ist. Furthermore, it is advantageous if the coil spring is wound so tightly that adjacent turns of the coil spring substantially abut each other when the coil spring is not wound up. This gives the coil spring in its longitudinal direction a sufficiently large (compressive) stiffness, which is suitable for the impact displacement of a linearly driven object.

Bei der erfindungsgemässen Kolbenpumpe ist es besonders zweckmässig, wenn das Antriebsgehäuse an einem Ende des Pumpenrohrs befestigt ist, wobei der aus dem Antriebsgehäuse herausragende Abschnitt der Schraubenfeder koaxial zum Pumpen- rohr verläuft. Ferner ist es vorteilhaft, wenn der Kolben mit einer formlich an ein Passstück der Schraubenfeder abgestimmten Zentriermulde versehen ist, welche die Schraubenfeder in ihrer koaxialen Ausrichtung fixiert, wobei Kolben und Schraubenfeder vorzugsweise nur auf Schub gekoppelt sind. Dadurch kann bei der Befüllung die Gefahr von Lufteinschlüssen vermieden werden. In the case of the piston pump according to the invention, it is particularly expedient for the drive housing to be fastened to one end of the pump tube, wherein the section of the helical spring protruding from the drive housing runs coaxially with the pump tube. Further, it is advantageous if the piston is provided with a matching to a fitting piece of the coil spring Zentriermulde which fixes the coil spring in its coaxial alignment, wherein the piston and coil spring are preferably coupled only to thrust. As a result, the risk of air pockets can be avoided during filling.

Vorteilhafterweise ist die Kolbenpumpe als Spender für ein abzugebendes Füllgut ausgebildet. Speziell kann dabei am Pumpenrohr ein Zahnbürstenaufsatz mit einem Stielteil und einem mit Borsten versehenen Bürstenteil lösbar befestigt sein, wobei der Stielteil einen Zufuhrkanal aufweist, durch welchen aus dem Pumpenrohr Zahnpaste in den Bereich der Borsten förderbar ist. Advantageously, the piston pump is designed as a dispenser for a dispensed filling. Specifically, a toothbrush attachment with a handle part and a brush part provided with bristles can be detachably fastened to the pump tube, the handle part having a supply channel through which toothpaste can be conveyed out of the pump tube into the region of the bristles.

Im Folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. In der Zeichnung zeigen: In the following the invention will be explained in more detail with reference to an embodiment shown in the drawing. In the drawing show:

Fig. 1 einen Axialschnitt durch die Antriebsvorrichtung und die Kolbenpumpe nach der Linie I-I der Fig. 2, 1 shows an axial section through the drive device and the piston pump along the line I-I of Fig. 2,

Fig. 2 einen Axialschnitt nach der Linie II-II der Fig. 1 mit einem aufgesetzten Fig. 2 is an axial section along the line II-II of Fig. 1 with an attached

Zahnbürstenaufsatz und  Toothbrush attachment and

Fig. 3 einen Querschnitt durch die Antriebsvorrichtung nach der Linie III-III der Fig. 3 shows a cross section through the drive device according to the line III-III of

Fig. 2.  Fig. 2.

Die dargestellte erfindungsgemässe Antriebsvorrichtung umfasst ein äusserlich im Wesentlichen zylindrisches Antriebsgehäuse 10, welches ein als Stirnrad ausgebildetes Zahnritzel 12 und eine Wickelspule 14 aufnimmt. Das Zahnritzel bzw. Stirnrad 12 ist einstückig mit einer Welle 16 ausgebildet, die sich quer zur Längsachse A des Antriebsgehäuses 10 erstreckt und im Antriebsgehäuse 10 drehbar gelagert ist. Die Achse der Welle 16 bzw. der Wickelspule 14 ist mit B bezeichnet. Die Wickelspule 14 sitzt drehfest aber axial frei gleitend auf der Welle 16. Die drehfeste Kopplung zwischen Wickelspule 14 und Welle 16 ist durch eine unrunde, z.B. quadratische Querschnittsform des Mittelabschnitts der Welle 16 realisiert. The illustrated drive device according to the invention comprises an externally substantially cylindrical drive housing 10 which receives a sprocket 12 designed as a spur gear and a winding spool 14. The sprocket or spur gear 12 is integrally formed with a shaft 16 which extends transversely to the longitudinal axis A of the drive housing 10 and is rotatably mounted in the drive housing 10. The axis of the shaft 16 and the reel spool 14 is designated B. The winding spool 14 is non-rotatably but axially freely slidably mounted on the shaft 16. The rotationally fixed coupling between the winding spool 14 and shaft 16 is characterized by a non-circular, e.g. square cross-sectional shape of the central portion of the shaft 16 realized.

Am Antriebsgehäuse 10 ist eine Antriebskappe 20 um die Längsachse A drehbar angeordnet. Die Antriebskappe 20 besitzt an ihrer Innenseite ein einstückig angeformtes Zahnritzel 22, welches in das Zahnritzel bzw. Stirnrad 12 eingreift, so dass durch eine Drehung der Antriebskappe 20 eine Drehung der Welle 16 und damit schliesslich der Wickelspule 14 bewirkt wird. On the drive housing 10, a drive cap 20 is arranged rotatably about the longitudinal axis A. The drive cap 20 has on its inside an integrally molded pinion gear 22 which engages in the pinion or spur gear 12, so that by a Rotation of the drive cap 20, a rotation of the shaft 16 and thus finally the winding coil 14 is effected.

Das Antriebsgehäuse 10 ist zweiteilig ausgebildet, wobei die Grenzfläche bzw. The drive housing 10 is formed in two parts, wherein the interface or

Trennebene axial und durch den Führungskanal 11 verläuft. Die Trennebene ist in Fig. 2 durch die Schnittlinie I-I dargestellt. Parting plane extends axially and through the guide channel 11. The parting line is shown in Fig. 2 by the section line I-I.

Die Wickelspule 14 weist an ihrem Umfang eine mehrgängige Wickelrille 15 auf. Auf die Wickelspule 14 ist ein Teil eines elastischen Stossorgans in Form einer Schraubenfeder 18 aufgewickelt und mit ihrem aufgewickelten Ende an der Wickelspule 14 befestigt. Das freie, nicht aufgewickelte Ende der Schraubenfeder 18 verläuft durch einen im Antriebsgehäuse 10 ausgebildeten Führungskanal 11, der axial aus dem Antriebsgehäuse 10 ausmündet. Das sich ausserhalb des Antriebsgehäuses 10 befindliche Teilstück der Schraubenfeder 18 ist geradlinig und erstreckt sich genau koaxial zum Antriebsgehäuse 10. Am freien Ende der Schraubenfeder 18 ist ein Passstück 19 befestigt. The winding reel 14 has at its periphery a multi-turn winding groove 15. On the winding spool 14, a part of an elastic shock member in the form of a coil spring 18 is wound and secured with its wound end to the reel spool 14. The free, unwound end of the coil spring 18 extends through a formed in the drive housing 10 guide channel 11, which opens axially from the drive housing 10. The located outside of the drive housing 10 portion of the coil spring 18 is rectilinear and extends exactly coaxial with the drive housing 10. At the free end of the coil spring 18, a fitting piece 19 is attached.

Durch Drehen der Antriebskappe 20 relativ zum Antriebsgehäuse 10 wird die By turning the drive cap 20 relative to the drive housing 10 is the

Schraubenfeder 18 je nach Drehrichtung auf die Wickelspule 14 aufgewickelt oder von dieser abgewickelt, wobei die Schraubenfeder 18 in das Antriebsgehäuse 10 eingezogen oder aus diesem ausgeschoben wird. Das mit dem Passstück 19 versehene Ende der Schraubenfeder 18 bewegt sich durch die Drehung der Antriebskappe 20 also linear koaxial zum Antriebsgehäuse 10. Beim Auf- bzw. Abwickeln der Schraubenfeder 18 verschiebt sich die Wickelspule 14 auf der Welle 16, so dass es nicht zu unerwünschten Verklemmungen der Schraubenfeder 18 innerhalb des Antriebsgehäuses kommen kann. Coil spring 18 wound depending on the direction of rotation on the reel spool 14 or unwound from this, the coil spring 18 is retracted into the drive housing 10 or pushed out of this. The provided with the fitting piece 19 end of the coil spring 18 moves by the rotation of the drive cap 20 so linear coaxial with the drive housing 10. When winding or unwinding of the coil spring 18, the reel spool 14 moves on the shaft 16 so that it is not too undesirable Deadlocks of the coil spring 18 may come within the drive housing.

Die Schraubenfeder 18 ist satt gewickelt, wobei im unaufgewickelten Zustand der Schraubenfeder die einzelnen Windungen praktisch aneinander anliegen. Dadurch besitzt die Schraubenfeder in ihrer Längsrichtung eine verhältnismässig grosse (Druck-)Steifigkeit, welche sie für die Stoss- Verschiebung eines linear anzutreibenden Objekts geeignet macht. The coil spring 18 is tightly wound, wherein in the unwound state of the coil spring, the individual turns practically abut each other. As a result, the coil spring in its longitudinal direction has a relatively large (compressive) rigidity, which makes it suitable for the impact displacement of a linearly driven object.

In der Zeichnung ist die erfindungsgemässe Antriebsvorrichtung im Einsatz in einer Kolbenpumpe dargestellt, die einen Spender für ein abzugebendes Füllgut bildet. Konkreter ist der Spender Teil einer Zahnbürste mit integriertem Pastenspender. Der als Ganzes mit 30 bezeichnete, als Kolbenpumpe ausgebildete (Zahnpasten-)Spender umfasst ein zylindrisches Pumpenrohr 32, in welchem ein Kolben 34 koaxial verschiebbar angeordnet ist. Im Raum 36 oberhalb des Kolbens 34 befindet sich im praktischen Einsatz das Füllgut, hier z.B. Zahnpaste. An seinem oberen Ende ist das Rohr 32 mit einer Düse 38 versehen. Das Antriebsgehäuse 10 der Antriebsvorrichtung ist in das untere Ende des Rohrs 32 eingesetzt Die Antriebskappe 20 ist mit eines Ring- wulsts 24 in eine Ringnut 33 des Rohrs 32 eingeschnappt und hält dadurch sich selbst und das Antriebsgehäuse 10 am bzw. im Rohr 32 fest. In the drawing, the inventive drive device is shown in use in a piston pump which forms a dispenser for a dispensed product. More specifically, the dispenser is part of a toothbrush with integrated paste dispenser. The designated as a whole with 30, designed as a piston pump (toothpaste) dispenser comprises a cylindrical pump tube 32, in which a piston 34 is arranged coaxially displaceable. In the space 36 above the piston 34 is in practical use the contents, in this example toothpaste. At its upper end, the tube 32 is provided with a nozzle 38. The drive housing 10 of the drive device is inserted into the lower end of the tube 32. The drive cap 20 is snapped with an annular bead 24 into an annular groove 33 of the tube 32 and thereby holds itself and the drive housing 10 firmly on or in the tube 32.

Auf den Spender 30 ist ein Zahnbürstenaufsatz 40 mit einem Stielteil 41 und einem mit Borsten 42 bestückten Bürstenteil 43 aufgeschraubt. Der Stielteil 41 weist einen Zufuhrkanal 44 auf, der einerseits mit der Düse 38 in kommunizierender Verbindung steht und anderseits im Bereich der Borsten 42 ausmündet. On the dispenser 30, a toothbrush attachment 40 is screwed with a handle part 41 and a brush part 43 equipped with bristles 42. The stem part 41 has a feed channel 44 which on the one hand communicates with the nozzle 38 in a communicating connection and on the other hand opens out in the region of the bristles 42.

Das Befüllen bzw. Wiederbefüllen des Spenders 30 erfolgt bei noch nicht montiertem bzw. abgenommenem Zahnbürstenaufsatz 40. Die Schraubenfeder 18 wird dazu fast ganz auf die Wickelspule 14 aufgewickelt, so dass ihr freies Ende nur wenig in das untere Ende des Rohrs 32 hineinragt. Dann wird Zahnpaste durch die Düse 38 in das Rohr 32 eingefüllt, wobei sich der Kolben 34 bis zu seinem unteren Anschlag bewegt. Dann wird der Zahnbürstenaufsatz 40 (wieder) auf den Spender 30 aufgeschraubt. Da die als Stossorgan wirkende Schraubenfeder 18 nicht auf Zug mit dem Kolben 34 verbunden ist, kann der Kolben vor dem Befüllen in seiner (oberen) Endposition stehen bleiben. Dadurch wird wiederum die Gefahr von Lufteinschlüssen beim Befüllen vermieden. Durch Drehen der Antriebskappe 20 wird die Schraubenfeder 18 abgewickelt, bis das Passstück 19 in Anlage an den Kolben 34 kommt. Der Kolben 34 ist mit einer formlich auf das Passstück 19 abgestimmten Zentriermulde 35 versehen, welche dafür sorgt, dass die Schraubenfeder 18 koaxial zum Rohr 32 gehalten wird und nicht seitlich ausbrechen kann. Durch weiteres Drehen der Antriebskappe 20 wird nun die Schraubenfeder 18 weiter ausgefahren und der Kolben 34 dadurch verschoben. Dadurch wird wiederum im Raum 36 oberhalb des Kolbens 34 befindliche Zahnpaste durch die Düse 38 ausgepresst und über den Zufuhrkanal 44 in den Bereich der Borsten 42 gefördert. Die erfindungsgemässe Antriebsvorrichtung ist selbstverständlich nicht nur zur Bewegung von Kolben in als Pasten- oder sonstigen Spendern dienenden Kolbenpumpen geeignet, sondern kann grundsätzlich überall dort eingesetzt werden, wo ein verhält- nismässig kurzhubiger Linearvorschub benötigt wird, der keine allzu grossen Schubkräfte erfordert. Die erfindungsgemässe Antriebsvorrichtung kann baulich sehr klein gehalten werden und ist konstruktiv wenig aufwändig und lässt sich sehr kostengünstig z.B. in Kunststoffspritztechnik realisieren, so dass sie bestens für den Einsatz in Massenartikeln geeignet ist. The filling or refilling of the dispenser 30 takes place when the toothbrush attachment 40 has not yet been mounted or removed. The helical spring 18 is wound almost completely onto the reel spool 14 so that its free end projects only slightly into the lower end of the tube 32. Then, toothpaste is filled through the nozzle 38 into the tube 32, whereby the piston 34 moves to its lower stop. Then the toothbrush attachment 40 is (again) screwed onto the dispenser 30. Since the coil spring acting as a thrust member 18 is not connected to train with the piston 34, the piston can remain in its (upper) end position before filling. This in turn avoids the risk of air pockets during filling. By turning the drive cap 20, the coil spring 18 is unwound until the fitting 19 comes into abutment against the piston 34. The piston 34 is provided with a form-fitting to the fitting piece 19 centering 35, which ensures that the coil spring 18 is held coaxially to the tube 32 and can not break out laterally. By further rotation of the drive cap 20, the coil spring 18 is now further extended and the piston 34 thereby displaced. As a result, toothpaste located above the piston 34 in the space 36 is in turn squeezed out through the nozzle 38 and conveyed via the feed channel 44 into the area of the bristles 42. Of course, the drive device according to the invention is not only suitable for moving pistons in piston pumps serving as paste dispensers or other dispensers, but can in principle be used wherever a reaction is required. nismatisch short-stroke linear feed is required, which requires no excessive shear forces. The inventive drive device can be structurally kept very small and is structurally less expensive and can be realized very cost, for example in plastic injection technology, so that it is ideally suited for use in mass-produced articles.

Claims

Patentansprüche Patent claims 1. Antriebsvorrichtung zur linearen Stoss- Verschiebung eines zu bewegenden Objekts mit einem Stossorgan für das zu bewegende Objekt und mit Mitteln zur Umwandlung einer Rotationsbewegung in eine translatorische Bewegung des Stossor- gans, dadurch gekennzeichnet, dass in einem Antriebsgehäuse (10) eine Wickelspule (14) drehbar angeordnet ist, die durch eine relativ zum Antriebsgehäuse (10) drehbare Antriebskappe (20) drehend antreibbar ist, dass das Stossorgan als langgestreckte Schraubenfeder (18) ausgebildet ist, die mit einem Ende an der Wickelspule (14) befestigt ist und durch Drehen der Wickelspule auf diese aufwickelbar bzw. von dieser abwickelbar ist, und dass im Antriebsgehäuse (10) ein Führungskanal (11) vorgesehen ist, durch welchen die Schraubenfeder (18) verläuft und aus dem Antriebsgehäuse (10) herausgeführt ist. 1. Drive device for the linear shock displacement of an object to be moved with a shock element for the object to be moved and with means for converting a rotational movement into a translational movement of the shock element, characterized in that a winding coil (14 ) is arranged rotatably, which can be driven in rotation by a drive cap (20) which is rotatable relative to the drive housing (10), that the shock element is designed as an elongated helical spring (18), which is fastened at one end to the winding spool (14) and by rotating the winding spool can be wound onto it or unwound from it, and that a guide channel (11) is provided in the drive housing (10), through which the helical spring (18) runs and is led out of the drive housing (10). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Wickelspule (14) und die Antriebskappe (20) um zwei zu einander senkrechte Achsen (A, B) drehbar und mittels kämmender Zahnritzel (12, 22) kinematisch gekoppelt sind. 2. Device according to claim 1, characterized in that the winding coil (14) and the drive cap (20) are rotatable about two mutually perpendicular axes (A, B) and are kinematically coupled by means of meshing toothed pinions (12, 22). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass eines der Zahnritzel (22) einstückig mit der Antriebskappe (20) ausgebildet ist. 3. Device according to claim 2, characterized in that one of the toothed pinions (22) is formed in one piece with the drive cap (20). 4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass eines der4. Device according to claim 2 or 3, characterized in that one of Zahnritzel (22) einstückig mit einer im Antriebsgehäuse (10) drehbar gelagerten Welle (16) ausgebildet ist. Pinion (22) is formed in one piece with a shaft (16) rotatably mounted in the drive housing (10). 5. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Wickelspule (14) in Längsrichtung gleitend auf einer Welle (16) angeordnet und mit der Welle drehfest gekoppelt ist. 5. Device according to one of the preceding claims, characterized in that the winding coil (14) is arranged to slide in the longitudinal direction on a shaft (16) and is coupled to the shaft in a rotationally fixed manner. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Wickelspule (14) an ihrem Umfang mit einer schraubenlinienförmigen Wickelrille (15) versehen ist. 6. Device according to claim 5, characterized in that the winding coil (14) is provided on its circumference with a helical winding groove (15). 7. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Führungskanal (11) koaxial zur Antriebskappe (20) aus dem Antriebsgehäuse (10) ausmündet. 7. Device according to one of the preceding claims, characterized in that the guide channel (11) opens out of the drive housing (10) coaxially to the drive cap (20). 8. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schraubenfeder (18) so eng gewickelt ist, dass im unaufge wickelten Zustand der Schraubenfeder benachbarte Windungen der Schraubenfeder im Wesentlichen aneinander anliegen. 8. Device according to one of the preceding claims, characterized in that the helical spring (18) is wound so tightly that in the unwound state of the helical spring, adjacent turns of the helical spring essentially rest against one another. 9. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schraubenfeder (18) an ihrem aus dem Antriebsgehäuse (10) herausragenden freien Ende mit einem Passstück (19) versehen ist. 1 O.Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Antriebsgehäuse 9. Device according to one of the preceding claims, characterized in that the helical spring (18) is provided with a fitting piece (19) at its free end protruding from the drive housing (10). 1 O.Device according to one of the preceding claims, characterized in that the drive housing (10) zweiteilig ausgebildet ist, wobei eine Grenzfläche zwischen den beiden Teilen des Antriebsgehäuses durch den Führungskanal (11) verläuft. (10) is designed in two parts, with an interface between the two parts of the drive housing running through the guide channel (11). 11. Kolbenpumpe mit einem Pumpenrohr und einem darin axial verschiebbaren Kol- ben sowie mit Antriebsmitteln zur axialen Verschiebung des Kolbens im Pumpenrohr, dadurch gekennzeichnet, dass die Antriebsmittel als Antriebsvorrichtung gemäss einem der voranstehenden Ansprüche ausgebildet sind. 11. Piston pump with a pump tube and an axially displaceable piston therein and with drive means for axially displacing the piston in the pump tube, characterized in that the drive means are designed as a drive device according to one of the preceding claims. 12. Kolbenpumpe nach Anspruch 11, dadurch gekennzeichnet, dass das Antriebsge- häuse (10) an einem Ende des Pumpenrohrs (32) befestigt ist, wobei der aus dem Antriebsgehäuse (10) herausragende Abschnitt der Schraubenfeder (18) koaxial zum Pumpenrohr (32) verläuft. 12. Piston pump according to claim 11, characterized in that the drive housing (10) is attached to one end of the pump tube (32), the section of the helical spring (18) protruding from the drive housing (10) being coaxial with the pump tube (32). runs. 13. Kolbenpumpe nach einem der Ansprüche 11-12, dadurch gekennzeichnet, dass der Kolben (34) mit einer formlich an das Passstück (19) der Schraubenfeder (18) abgestimmten Zentriermulde (35) versehen ist, welche die Schraubenfeder (18) in ihrer koaxialen Ausrichtung fixiert, wobei Kolben (34) und Schraubenfeder (18) vorzugsweise nur auf Schub gekoppelt sind. 13. Piston pump according to one of claims 11-12, characterized in that the piston (34) is provided with a centering trough (35) which is shaped to fit the fitting piece (19) of the helical spring (18) and which holds the helical spring (18) in its Coaxial alignment fixed, with piston (34) and coil spring (18) preferably only being coupled for thrust. 14. Kolbenpumpe nach einem der Ansprüche 11-13, dadurch gekennzeichnet, dass sie als Spender für ein abzugebendes Füllgut ausgebildet ist. 14. Piston pump according to one of claims 11-13, characterized in that it is designed as a dispenser for a filling material to be dispensed. 15. Kolbenpumpe nach Anspruch 14, dadurch gekennzeichnet, dass am Pumpenrohr ein Zahnbürstenaufsatz (40) mit einem Stielteil (41) und einem mit Borsten (42) ver- sehenen Bürstenteil (43) lösbar befestigt ist, wobei der Stielteil (41) einen Zufuhrkanal (44) aufweist, durch welchen aus dem Pumpenrohr (32) Zahnpaste in den Bereich der Borsten (42) förderbar ist. 15. Piston pump according to claim 14, characterized in that a toothbrush attachment (40) with a handle part (41) and a brush part (43) provided with bristles (42) is releasably attached to the pump tube, the handle part (41) having a supply channel (44), through which toothpaste comes out of the pump tube (32) into the area the bristles (42) can be conveyed.
PCT/CH2011/000001 2010-02-01 2011-01-03 Drive device and piston pump having a drive device Ceased WO2011091544A1 (en)

Applications Claiming Priority (2)

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CH116/10 2010-02-01
CH1162010A CH702666B1 (en) 2010-02-01 2010-02-01 Drive device and piston pump with drive device.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2628546A (en) * 2023-03-27 2024-10-02 Medmix Switzerland Ag Dispensing device
WO2024199936A1 (en) * 2023-03-27 2024-10-03 Medmix Switzerland Ag Dispensing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024200367A1 (en) * 2023-03-27 2024-10-03 Medmix Switzerland Ag Dispensing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB874459A (en) * 1958-04-14 1961-08-10 Willy Zeller Device for applying pasty substances
US3231139A (en) * 1961-09-12 1966-01-25 Bouet Bernard Dispensing containers
GB2326086A (en) * 1997-06-12 1998-12-16 Eitan Rivlin Reservoir Toothbrush
WO1999011543A2 (en) * 1997-09-03 1999-03-11 Michael Edward Brown Dispenser and delivery arrangement of a flowable preparation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB874459A (en) * 1958-04-14 1961-08-10 Willy Zeller Device for applying pasty substances
US3231139A (en) * 1961-09-12 1966-01-25 Bouet Bernard Dispensing containers
GB2326086A (en) * 1997-06-12 1998-12-16 Eitan Rivlin Reservoir Toothbrush
WO1999011543A2 (en) * 1997-09-03 1999-03-11 Michael Edward Brown Dispenser and delivery arrangement of a flowable preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2628546A (en) * 2023-03-27 2024-10-02 Medmix Switzerland Ag Dispensing device
WO2024199936A1 (en) * 2023-03-27 2024-10-03 Medmix Switzerland Ag Dispensing device

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CH702666A1 (en) 2011-08-15

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