EP0472915B1 - Dispenser for fluid - Google Patents

Dispenser for fluid Download PDF

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Publication number
EP0472915B1
EP0472915B1 EP91112539A EP91112539A EP0472915B1 EP 0472915 B1 EP0472915 B1 EP 0472915B1 EP 91112539 A EP91112539 A EP 91112539A EP 91112539 A EP91112539 A EP 91112539A EP 0472915 B1 EP0472915 B1 EP 0472915B1
Authority
EP
European Patent Office
Prior art keywords
discharge
determining device
actuator
determining
fastening
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.)
Expired - Lifetime
Application number
EP91112539A
Other languages
German (de)
French (fr)
Other versions
EP0472915A3 (en
EP0472915B2 (en
EP0472915A2 (en
Inventor
Karl-Heinz Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP0472915A2 publication Critical patent/EP0472915A2/en
Publication of EP0472915A3 publication Critical patent/EP0472915A3/en
Application granted granted Critical
Publication of EP0472915B1 publication Critical patent/EP0472915B1/en
Publication of EP0472915B2 publication Critical patent/EP0472915B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/04—Design features of general application for driving the stage of lowest order
    • G06M1/041—Design features of general application for driving the stage of lowest order for drum-type indicating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/108—Means for counting the number of dispensing strokes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

  • the invention relates to a discharge device according to the preamble of claim 1.
  • media in particular for flowable media of essentially any type, which, for example, are to be brought out of a media store by repeated manual actuation of a discharge conveyor in discharge units.
  • a detection device available in the area or on the discharge device, with which any or such data can be recorded, stored and possibly displayed visibly from the outside, in connection with the Use of the medium are important.
  • data can include, for example, the number of applications that have already been completed and / or at least one subsequent application time or the like. his.
  • this detection element can be mounted on a base body, which at the same time serves to fasten the discharge pump to the media store.
  • the invention is also based on the object of providing a discharge device which is improved over known designs, in particular for certain applications, and which can preferably be designed and / or assembled in a very simple manner.
  • the features of claim 1 are suitable for solving.
  • the basic body of the detection device is formed by a separate component that can also be easily attached to the discharge unit when its discharge conveyor is not with a cap or screw cap, but with a simpler one, which can be fixed, for example, by deformation or can only be opened by destruction Attachment, as it can be formed by a Crimean ring, is attached to the media storage.
  • an axially and / or rotationally rigid holder is expediently provided, the base body being able to form a reinforcement of the relatively thin-walled fastening element for the connection of the discharge conveyor to the media store.
  • the base body form a cover for complete shielding of this fastening and, if necessary, the constricted neck of the vessel and connect it in an elastically resilient manner to a shoulder of the vessel belly of the media store essentially without gaps, so that there are practically no dirt gaps.
  • the outer width of the cover can be at most or be approximately as large as the outer width of the vessel belly, so that there is a relatively uniformly continuous outer surface.
  • the base body can be designed directly as a scale support for at least one scale, the scale symbols of which are expediently distributed substantially uniformly over the entire circumference. It is also conceivable to hold the base body relatively rotatably on the discharge unit so that it can be adjusted to different starting positions.
  • the base body advantageously has a detection and / or display element in the manner of a freewheel so that it is secured against unintentional rotation on the one hand and on the other hand can only be adjusted in one direction by applying a correspondingly high actuating force while it is in the opposite direction is positively locked. If this link is not formed by an actuating body which is only supported on the base body, but is mounted essentially independently of the base body in a separate bearing approximately axially and / or in a rotating manner, it can be formed in a simple manner by an actuating cap for actuating the discharge conveyor.
  • the base body can be assembled very easily by essentially linear attachment or resilient snap-on snapping. If the one of two mutually movable members of the detection device is formed by the actuating member of the discharge actuation, only a single additional component is required to arrange a counting device, namely the base body or scale carrier, which could possibly also surround the actuating member on the outer circumference and expedient in this case with a display window or the like. would be provided to identify the scale provided on the circumference of the actuator.
  • the memory suitably consists of glass.
  • the discharge device 1 has a discharge unit 2 designed as a self-contained assembly assembly with a discharge conveyor 3 and a storage vessel 4, which can be operated manually by a discharge actuation 5.
  • the piston unit 7 of a pump 6 engaging for the most part in the storage vessel 4 is actuated, the pump chamber of which has a valve-controlled inlet 8 and a valve-controlled outlet 9.
  • a piston or actuating tappet 10 is provided, which is connected to a conveyor handle in the form of an actuating member 11 in the form of a pressure surface surrounding it and is arranged on the plunger tappet of the piston unit 7 via a plug connection.
  • the actuating plunger 10 is penetrated by an outlet channel connected to the outlet 9, surrounded by a discharge nozzle 12 formed in one piece with it and lying approximately in the pump axis, and has the discharge nozzle or discharge opening 13 of the discharge unit 2 in the region of its end face.
  • the cylinder housing forms a base body 14 with a cylinder cover, with which the discharge conveyor 3 is fastened to the vessel neck 17 by means of a fastening member or a fastening 15, for example a crimp ring encompassing a cap-shaped vessel flange 16. Between this vessel flange 16 and the vessel belly 18, the vessel neck 17 forms an annular groove on the outer circumference, which can be delimited by the fastening 15 on one flank.
  • the part of the base body protruding from the storage vessel 4 and the fastening 15 are overlapped by a cap 19 which forms the actuating member 11 with its end face.
  • a detection device 20 is provided for detecting, setting and displaying the next time of use, which is essentially formed by only a single additional component, namely a tubular or sleeve-shaped base body 21 and a corresponding shape of the cap 19, which is also made of plastic.
  • the cap 19 forms a display or detection element 22 which can be rotated relative to the base body 21, the pump 6 and the storage vessel 4 in each stroke position, and the jacket of the cap 19 as the actuating element assigned.
  • a component thus forms an actuator 11 for the conveyor actuation with an end face and an actuator 23 for the detection device 20 with a circumference, the required rotational forces being selected such that rotation by the load on the actuator 11 pushing in the direction of rotation is not or only extremely difficult is possible to rule out inadvertent actuation of the detection device 20.
  • the base body 21 is fastened with a snap connection 24 only by plugging it onto the discharge unit 2 when the discharge conveyor 3 and the storage vessel 4 have already been sealed and are finally fastened to one another with the fastening 15 for use.
  • the attachment 15 is formed by a thin sheet metal ring, the end portions of which are flanged radially inward and prestressed against mutually facing end faces of the base body 14 and the vessel flange 16 such that the outer circumference of the vessel flange 16 rests essentially over the entire surface of the inside circumference of the jacket of the attachment 15.
  • the snap connection 24 has in a ring distributed over the inner circumference of the base body 21 protruding cams 25 which engage axially pre-tensioned behind the rear or lower flanged end section of the fastening 15 in the region of the vessel neck 7.
  • cams 25 are located in the region of a section of the base body 21 which can be expanded radially under elastic resilient expansion so that it expands by itself when the cams 25 run up while being plugged onto the associated end faces of the base body 14 or the vessel flange 16 then jumps radially inwards in the fastening position.
  • the base body 21 lies with a protruding piece over its inner circumference Annular collar 26 under the axial bias mentioned.
  • the outer circumferential surface of the attachment 15 lies essentially over the entire surface of the inner circumference of the base body 21 under its radial prestress, so that there is a relatively large friction connection 27 as a safeguard against rotation.
  • the jacket 28 of the base body 21 has constant outer and inner cross sections from its lower end approximately up to the annular collar 26, the outer cross section being able to pass essentially constantly up to the upper end, but a slightly thicker jacket thickness is provided above the annular collar 26, so that the rear jacket section is more elastic than the front. At least in the area of the front jacket section, the base body 21 is connected to the cap 19 by an axially displaceable engagement by means of an internal safety guide or rotation lock 29.
  • securing cams 31, for example three evenly distributed over the circumference are provided on the outer circumference of the base body 21, to which a larger number, for example 24, approximately axial securing grooves 32, evenly distributed over the inner circumference of the jacket 35 of the cap 19, are assigned are.
  • the jacket 35 is resiliently radially expandable so that the locking cams 31 with their flat rising back flanks can skip the separating web between two adjacent locking grooves 32 in one direction of rotation, while against the other direction of rotation by engaging their approximately radial breast flanks on the associated flanks Lock the locking grooves 32 with a positive fit.
  • a detent 39 is formed with a detent division.
  • a display device 37 which, as a display, has a display window 38 in the form of a jacket opening which adjoins the open end of the jacket 35. At least in the initial position of the display window 38, there is a symbol of a scale 40 behind it, which is provided on the outer circumference of the base body 21 approximately in the middle between its ends or in the region of the fastening 15. The symbols of the scale 40 are distributed evenly over the circumference in accordance with the above-mentioned latching division.
  • the cap 19 is pushed with the actuating plunger 10 onto a piston shaft of the pump 6 approximately parallel to the central axis of the discharge device or to the plugging direction of the base body 21. After the base body 21 has been snapped on, the cap 19 can therefore also be put on in such a way that its casing 35 closely surrounds the base body 21 in the starting position about half its length on the outer circumference.
  • the base body 21 and thus the scale can be exchanged for another.
  • the rear end portion 36 of the base body 21 can rest with its end edge surface or its inner ring edge on the transition surface between the neck 17 and the vessel belly 18 with axial tension and thereby possibly slightly radially resiliently expanded by the conical transition surface, so that even with very much thin-walled design of the base body 21 in the order of magnitude of one millimeter thickness or less ensures high rigidity.
  • the thickness of the jacket 28 can be approximately in the order of the thickness of the jacket 35.
  • the individual components or arrangements according to the subclaims can each be separate, i.e. can also be provided multiple times or these designs can be provided on a single component alone.
  • several brackets, scale carriers or scales, actuators, rotation locks, detents and the like can also be used. be provided.
  • E.g. 3 can also be combined with an embodiment at least similar to FIG. 1, so that at least two detection devices working independently of one another are provided with a common base body or separate base bodies or detection members.
  • the detection device 20a has, for the detection element 22a separate from the cap 19a, the actuating element 11a and / or the jacket 35a, a stepping mechanism 23a which is completely encapsulated within the cap 19a and with a radial spacing within the jacket 35a such that it is present with each working stroke the discharge actuation 5a advances by a switching step or a scale division.
  • At least one switching arm 33 or 33a which is at an angle to the actuation direction and / or is curved around the central axis of the stepping mechanism 23a, which essentially coincides with the pump axis, is provided, with several, in particular two switching arms 33 and 33a in one or more differently wide rings around the Center axis can be arranged.
  • the respective switching arm 33 or 33a is articulated on a body which is essentially fixedly connected to the detection element 22a and / or is substantially fixed relative to the base body 21a, with an associated end such that it pivots about a crosswise to the central axis Execute axis or which can change its inclined position with respect to the central axis almost over its entire length in flexible switching arm 33 or 33a.
  • One end is fixed with respect to one of the two bodies, in particular directly with respect to the detection element 22a or the base body 21a, which can be achieved in a simple manner by one-piece design with this body.
  • the other end lies in the area of a ring, for example a toothing 34 or 34a with sawtooth-shaped teeth, and forms a free-wheeling ratchet with this ring such that this end is only rotated in one direction about the central axis from a blocking position with respect to the toothing 34 or 34a can be.
  • the detection member 22a is axially secured in the cap 19a, for example on the inner circumference of the jacket 35a, as a switching ring which is flatter in relation to its outer diameter and can be axially supported on the inner end face of the end wall forming the actuating member 11a.
  • the detection member 22a can be secured by a protrusion on the inner circumference of the casing 35a, for example by an annular snap cam, so that the switching ring 22a moves past the snap cam while the jacket 35a is elastically widened and is mounted only by being blown in from the cap opening can be.
  • the detection member 22a lies at a greater axial distance from the end face of the base body 21a facing it than at the end of the pump stroke, the teeth 34 and 34a being recessed in the area of an annular shoulder in the end face of the base body 21a or the detection member 22a can be provided that when the detection member 22a stops on the base body 21a in the pump stroke end position, the switching arm 33 or 33a is approximately stretched and is free of jamming within this recess.
  • the slope of the switching arm 33 and 33a decreases and the distance of its ends in the circumferential direction increases by an amount that is at least as large how is the simple or integral multiple of the pitch of the teeth 34 or 34a, so that the detection element 22a is rotated further by a switching step corresponding to this dimension.
  • the ends of the switching arm 33 or 33a are moved axially apart again, as a result of which its slope increases.
  • the detection member 22a is secured against rotation against its switching direction by a freewheel-type locking mechanism 29a, so that the free end of the switching arm 33 or 33a slides over the inclined back surfaces of the teeth 34 or 34a until it again faces a blocking tooth face jumps and is thus in the starting position for the next switching step.
  • the locking mechanism 29a acts between the detection element 22a and the cap 19a, it being possible for it to be provided in the region of an outer surface and / or at least one end face of the detection element 22a.
  • the locking mechanism 29a can also be expediently located on the other end face of the detection element 22a, it being expedient to the The outer circumference of the detection member 22a is sufficient.
  • a locking mechanism 39a which, as described with reference to the locking mechanism 34 or 34a, has teeth 32a in a ring, in which in one direction of rotation skipably engage two or more detent cams 31a distributed over the circumference, which expediently protrude from the associated end face of the detection element 22a, can extend to the outer circumference thereof and / or are provided in the snap-in cam for the detection element 22a or are formed by the latter.
  • the bearing for the detection member 22a formed by the cap 19a is expediently secured against rotation in essentially every stroke position with respect to the base body 21a, wherein in at least one end position it can also be rotated according to FIG. 1.
  • the anti-rotation device 30 has cams engaging in longitudinal grooves which expediently project in one piece over the inner circumference of the casing 35a and engage in axial grooves on the outer circumference of an end section of the base body 21a which is slightly reduced in external width. These cams can simultaneously form the snap cams for the detection member 22a or the toothing or the locking cams of the locking mechanism 39a and are at a distance from the open end face of the cap 19a.
  • the base body 21a can be mounted independently of the pump 2a or only after it has been installed on the storage vessel 4a, it can, with its jacket 28a, together with the cap 19a relative to the pump 2a or the storage vessel 4a on the fastening 15a about the central axis be relatively rotatably manually rotatable, without changing the display of the detection device 20a, so that the display can be brought into the most favorable viewing position at any time.
  • the base body 21a is connected to an actuating member 11a by an inner annular shoulder 26a lying away from the teeth 34 or 34a, which lies within the jacket 35a in the starting position in order to achieve a compact axial extent of the detection device. annular end face of the Crimean ring forming the attachment 15a is supported.
  • This end face which extends to the outer circumference of the crimp ring, is formed by a section of the crimp ring which on the inside is essentially contact-free and therefore elastically slightly flexible, so that this support and that of the snap connection 24a or the cam 25a provide essentially axial play-free mounting of the base body 21a can be achieved.
  • the axially resetting spring action of the respective switching arm 33 or 33a can also contribute to this, which not only supports the return spring of the pump 2a during the return stroke, but also always axially presses the detection element 22a and the base body 21a apart, so that the detection ring 22a resiliently against the End face of the cap 19a and the base body 21a are pressed with its inner annular shoulder 26a.
  • the snap cam 25a can also pass continuously in a ring over the inner circumference of the jacket 28a. Between the annular shoulder 26a and the toothing 34a and / or in the area thereof, the base body 21a with its inner circumference can also be centered with respect to the outer circumference of the housing of the pump 2a or the actuating plunger 10a by means of a correspondingly narrow design, thereby increasing the stability against transverse forces.
  • the scale 40 is provided directly on the outer circumference of the detection element 22a. It runs in the area of a display window 38a of the display device 37a which passes through the jacket 35a immediately adjacent to the inside of the end wall of the cap 19a.
  • a further display device 37b is expediently provided in the circumferential direction at a distance from the display device 37a, which displays, for example, the first and / or the last actuation stroke of a predetermined total number of actuation strokes which can be carried out with the discharge device 1a.
  • the actuator 11a and / or the detection element 22a can be blocked against further working movements, for example by a cam on the detection element 22a, which runs against a counter-stop of the cap 19a and thereby also indirectly locks against the actuation stroke via the switching arms 33, 33a.
  • the appropriately flat strip-shaped switching arms 33, 33a can also connect to the detection element 22a in the region of one of the above-mentioned circumferences so that they have one end the teeth 34 and 34a are assigned and form with the other end a locking cam for the locking mechanism.
  • more favorable lever ratios result if the switching arms 33, 33a are relatively close to the inner circumference of the jacket 35a.
  • the predetermined total number of switching steps of the detection element 22a expediently results in a total rotation angle of less than 360 ° or 180 ° or even less than 90 °, so that when switching arms 33, 33a are articulated both on the detection element 22a and on the base body 21a , no measures have to be taken so that these switching arms can run past each other or run over each other, because at the beginning of the first actuation stroke they are at an angular distance from one another which is greater than this maximum angle of rotation.
  • the detection device 20a or the base body 21a and / or the cap 19a including the detection member 22a can be easily detached or replaced from the rest of the discharge device 1a without destruction, simply by pulling them off, this component is also easy to dispose of when the discharge device 1a is used possible, all of these parts suitably made of plastic or essentially the same material.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Toys (AREA)
  • Measuring Volume Flow (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
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  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A dispenser (1) has a display device (37) which can be controlled independently of the discharge actuation (5) and is formed solely by a single, additional component, in the form of a sheath-shaped basic body (21), which is connected on top by means of a snap connection (24), said basic body bearing a scale (40) behind an outer casing of the actuation cap (19) which can be rotated in an incremental fashion by means of a catch arrangement (29) and is provided with a display window (38). <IMAGE>

Description

Die Erfindung betrifft eine Austragvorrichtung nach dem Oberbegriff des Patentanspruches 1.The invention relates to a discharge device according to the preamble of claim 1.

Sie ist für Medien, insbesondere für fließfähige Medien im wesentlichen beliebiger Art vorgesehen, die zum Bespiel durch wiederholte manuelle Betätigung eines Austragförderers in Austrageinheiten aus einem Medienspeicher auszubringen sein sollen. Vor allem bei medizinischer Anwendung solcher Medien kann es zweckmäßig sein, im Bereich bzw. an der Austragvorrichtung eine Erfassungseinrichtung zur Verfügung zu haben, mit welcher beliebige oder solche Daten erfaßt, gespeichert und ggf. von außen sichtbar angezeigt werden können, die im Zusammenhang mit der Anwendung des Mediums von Bedeutung sind. Solche Daten können zum Beispiel die Anzahl der bereits absolvierten Awendungen und/oder mindestens ein nächstfolgender Anwendungszeitpunkt o.dgl. sein.It is intended for media, in particular for flowable media of essentially any type, which, for example, are to be brought out of a media store by repeated manual actuation of a discharge conveyor in discharge units. Especially when such media are used for medical purposes, it may be expedient to have a detection device available in the area or on the discharge device, with which any or such data can be recorded, stored and possibly displayed visibly from the outside, in connection with the Use of the medium are important. Such data can include, for example, the number of applications that have already been completed and / or at least one subsequent application time or the like. his.

Wird mit der Zähleinrichtung jeder Pumphub der Austragvorrichtung dadurch erfaßt, daß ein Erfassungsglied zwangsläufig drehend weitergeschaltet wird, so kann dieses Erfassungsglied an einem Grundkörper gelagert sein, der gleichzeitig zur Befestigung der Austragpumpe an dem Medienspeicher dient.If each pump stroke of the discharge device is detected by the counting device in that a detection element is inevitably rotated, this detection element can be mounted on a base body, which at the same time serves to fasten the discharge pump to the media store.

Durch die EP-A-0 114 617 und die EP-A-0 269 496 ist jeweils eine Austragvorrichtung mit einer Erfassungseinrichtung bekanntgeworden, deren Grundkörper zur Durchführung der Zählvorgänge drehend, beispielsweise auf nicht näher beschriebene Weise, ggf. durch Reibschluß, auf der Bestigung der Austrageinheit gelagert ist. Die US-A-4 220 247 zeigt eine mit einer Erfassungseinrichtung versehene Verschlußkappe für eine Ausgieß-Flasche, bei welcher der Medienaustrag nicht mit einem Austragförderer erfolgt.From EP-A-0 114 617 and EP-A-0 269 496 a discharge device with a detection device has become known, the base of which is rotated for carrying out the counting processes, for example in a manner not described in detail, possibly by friction, on the confirmation the discharge unit is stored. US-A-4 220 247 shows a closure cap for a pouring bottle provided with a detection device, in which the media is not discharged with a discharge conveyor.

Der Erfindung liegt ferner die Aufgabe zugrunde, eine Austragvorrichtung zu schaffen, die gegenüber bekannten Ausbildungen, insbesondere für bestimmte Anwendungsfälle, verbessert ist und vorzugsweise sehr einfach ausgebildet und/oder montiert werden kann.The invention is also based on the object of providing a discharge device which is improved over known designs, in particular for certain applications, and which can preferably be designed and / or assembled in a very simple manner.

Zur Lösung sind die Merkmale des Patentanspruches 1 geeignet. Der Grundkörper der Erfassungseinrichtung ist durch einen gesonderten Bauteil gebildet, der auch dann einfach an der Austrageinheit befestigt werden kann, wenn deren Austragförderer nicht mit einer Kappe bzw. Schraubkappe, sondern mit einer einfacheren, zum Beispiel durch Verformung festzulegenden bzw. nur durch Zerstörung zu öffnenden Befestigung, wie sie durch einen Krimpring gebildet sein kann, an dem Medienspeicher befestigt ist.The features of claim 1 are suitable for solving. The basic body of the detection device is formed by a separate component that can also be easily attached to the discharge unit when its discharge conveyor is not with a cap or screw cap, but with a simpler one, which can be fixed, for example, by deformation or can only be opened by destruction Attachment, as it can be formed by a Crimean ring, is attached to the media storage.

Statt einer drehbaren Lagerung des Grundkörpers an der fertig vormonierten Austrageinheit ist zweckmäßig eine axial und/oder in Drehrichtung lagestarre Halterung vorgesehen, wobei der Grundkörper nach Art einer Fassung eine Verstärkung des verhältnismäßig dünnwandigen Befestigungsgliedes für die Verbindung des Austragförderers mit dem Medienspeicher bilden kann. Ferner kann der Grundkörper einen Abdeckmantel zur vollständigen Abschirmung dieser Befestigung sowie ggf. des eingeschnürten Gefäßhalses bilden und elastisch federnd an eine Schulter des Gefäßbauches des Medienspeichers im wesentlichen lückenlos anschließen, so daß sich praktisch keine Schmutzspalte ergeben. Die Außenweite des Abdeckmantels kann dabei höchstens bzw. annähernd so groß wie die Außenweite des Gefäßbauches sein, so daß sich eine verhältnismäßig gleichmäßig durchgehende Außenfläche ergibt.Instead of a rotatable mounting of the base body on the pre-assembled discharge unit, an axially and / or rotationally rigid holder is expediently provided, the base body being able to form a reinforcement of the relatively thin-walled fastening element for the connection of the discharge conveyor to the media store. Furthermore, the base body form a cover for complete shielding of this fastening and, if necessary, the constricted neck of the vessel and connect it in an elastically resilient manner to a shoulder of the vessel belly of the media store essentially without gaps, so that there are practically no dirt gaps. The outer width of the cover can be at most or be approximately as large as the outer width of the vessel belly, so that there is a relatively uniformly continuous outer surface.

Des weiteren kann der Grundkörper unmittelbar als Skalenträger für mindestens eine Skala ausgebildet sein, deren Skalensymbole zweckmäßig im wesentlichen gleichmäßig über den gesamten Umfang verteilt sind. Es ist auch denkbar, den Grundkörper verhältnismäßig schwergängig so drehbar an der Austrageinheit zu haltern, daß er in unterschiedliche Ausgangsstellungen verstellt werden kann.Furthermore, the base body can be designed directly as a scale support for at least one scale, the scale symbols of which are expediently distributed substantially uniformly over the entire circumference. It is also conceivable to hold the base body relatively rotatably on the discharge unit so that it can be adjusted to different starting positions.

Des weiteren steht mit dem Grundkörper vorteilhaft ein Erfassungs- und/oder Anzeigeglied nach Art eines Freilaufes so in Rasteingriff, daß es einerseits gegen unbeabsichtigtes Verdrehen gesichert ist und andererseits unter Aufbringung einer entsprechend hohen Betätigungskraft nur in einer einzigen Richtung verstellt werden kann, während es in der entgegengesetzten Richtung formschlüssig gesperrt ist. Ist dieses Glied nicht durch einen nur auf dem Grundkörper gelagerten Stellkörper gebildet, sondern im wesentlichen unabhängig von dem Grundkörper in einer gesonderten Lagerung etwa axial und/oder drehend gelagert, so kann es in einfacher Weise durch eine Betätigungskappe für die Betätigung des Austragförderers gebildet sein.Furthermore, the base body advantageously has a detection and / or display element in the manner of a freewheel so that it is secured against unintentional rotation on the one hand and on the other hand can only be adjusted in one direction by applying a correspondingly high actuating force while it is in the opposite direction is positively locked. If this link is not formed by an actuating body which is only supported on the base body, but is mounted essentially independently of the base body in a separate bearing approximately axially and / or in a rotating manner, it can be formed in a simple manner by an actuating cap for actuating the discharge conveyor.

Es ist zwar denkbar, das bewegbare Glied der Erfassungseinrichtung durch einen Stelltrieb so zu steuern, daß es bei jeder Austragförderung bzw. nach einer bestimmten Anzahl von Austragbetätigungen weitergeschaltet wird, jedoch kann zusätzlich hierzu oder statt dessen auch eine von dieser Austragbetätigung völlig unabhängige Verstellung durch direkten manuellen Zugriff vorgesehen sein, so daß das Erfassungsglied nur durch willkürliches Verstellen zu beeinflussen ist.Although it is conceivable to control the movable member of the detection device by means of an actuating drive so that it is switched on with each discharge conveyance or after a certain number of discharge operations, in addition to this or instead, an adjustment that is completely independent of this discharge operation can be carried out by direct manual access can be provided so that the detection element can only be influenced by arbitrary adjustment.

Der Grundkörper läßt sich sehr einfach durch im wesentlichen lineares Aufstecken bzw. elastisch federndes Aufschnappen montieren. Ist das eine von zwei gegeneinander bewegbaren Gliedern der Erfassungseinrichtung durch das Betätigungsglied der Austrag-Betätigung gebildet, so bedarf es zur Anordnung einer Zähleinrichtung nur eines einzigen zusätzlichen Bauteiles, nämlich des Grundkörpers bzw. Skalenträgers, der ggf. auch das Betätigungsglied am Außenumfang umgeben könnte und in diesem Fall zweckmäßig mit einem Anzeigefenster o.dgl. zur Kenntlichmachung der am Umfang des Betätigungsgliedes vorgesehenen Skala versehen wäre. Der Speicher besteht zweckmäßig aus Glas.The base body can be assembled very easily by essentially linear attachment or resilient snap-on snapping. If the one of two mutually movable members of the detection device is formed by the actuating member of the discharge actuation, only a single additional component is required to arrange a counting device, namely the base body or scale carrier, which could possibly also surround the actuating member on the outer circumference and expedient in this case with a display window or the like. would be provided to identify the scale provided on the circumference of the actuator. The memory suitably consists of glass.

Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor. Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher erläutert. In den Zeichnungen zeigen:

Fig. 1
eine erfindungsgemäße Austragvorrichtung in teilweise geschnittener Ansicht,
Fig. 2
einen Querschnitt durch die Austragvorrichtung gemäß Fig. 1 und
Fig. 3
eine weitere Ausführungsform im Schnitt.
These and other features emerge from the description and the drawings in addition to the claims. An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:
Fig. 1
a discharge device according to the invention in a partially sectioned view,
Fig. 2
a cross section through the discharge device according to FIG. 1 and
Fig. 3
another embodiment in section.

Die Austragvorrichtung 1 weist eine als in sich geschlossene Montagebaugruppe ausgebildete Austrageinheit 2 mit einem Austragförderer 3 und einem Speichergefäß 4 auf, die durch eine Austrag-Betätigung 5 manuell zu betätigen sind.The discharge device 1 has a discharge unit 2 designed as a self-contained assembly assembly with a discharge conveyor 3 and a storage vessel 4, which can be operated manually by a discharge actuation 5.

Hierbei wird die Kolbeneinheit 7 einer zum größten Teil in das Speichergefäß 4 eingreifenden Pumpe 6 betätigt, deren Pumpenkammer einen ventilgesteuerten Einlaß 8 und einen ventilgesteuerten Auslaß 9 aufweist. Zur Betätigung ist ein Kolben- bzw. Betätigungsstößel 10 vorgesehen, der mit einer Förderhandhabe in Form eines Betätigungsgliedes 11 in Form einer ihn umgebenden Druckfläche verbunden und über eine Steckverbindung an dem Kolbenstößel der Kolbeneinheit 7 angeordnet ist. Der Betätigungsstößel 10 ist von einem an den Auslaß 9 angeschlossenen Auslaßkanal durchsetzt, von einem einteilig mit ihm ausgebildeten und etwa in der Pumpenachse liegenden Austragstutzen 12 umgeben und weist im Bereich seiner Endfläche die ins Freie führende Austragdüse oder Austragöffnung 13 der Austrageinheit 2 auf. Das Zylindergehäuse bildet mit einem Zylinderdeckel einen Grundkörper 14, mit welchem der Austragförderer 3 durch ein Befestigungsglied bzw. eine Befestigung 15, zum Beispiel einen kappenförmigen Gefäßflansch 16 umgreifenden Krimpring an dem Gefäßhals 17 befestigt ist. Zwischen diesem Gefäßflansch 16 und dem Gefäßbauch 18 bildet der Gefäßhals 17 am Außenumfang eine Ringnut, die an einer Flanke von der Befestigung 15 begrenzt sein kann. Der aus dem Speichergefäß 4 vorstehende Teil des Grundkörpers und die Befestigung 15 werden von einer Kappe 19 übergriffen, welche mit ihrer Stirnseite das Betätigungsglied 11 bildet.Here, the piston unit 7 of a pump 6 engaging for the most part in the storage vessel 4 is actuated, the pump chamber of which has a valve-controlled inlet 8 and a valve-controlled outlet 9. For actuation, a piston or actuating tappet 10 is provided, which is connected to a conveyor handle in the form of an actuating member 11 in the form of a pressure surface surrounding it and is arranged on the plunger tappet of the piston unit 7 via a plug connection. The actuating plunger 10 is penetrated by an outlet channel connected to the outlet 9, surrounded by a discharge nozzle 12 formed in one piece with it and lying approximately in the pump axis, and has the discharge nozzle or discharge opening 13 of the discharge unit 2 in the region of its end face. The cylinder housing forms a base body 14 with a cylinder cover, with which the discharge conveyor 3 is fastened to the vessel neck 17 by means of a fastening member or a fastening 15, for example a crimp ring encompassing a cap-shaped vessel flange 16. Between this vessel flange 16 and the vessel belly 18, the vessel neck 17 forms an annular groove on the outer circumference, which can be delimited by the fastening 15 on one flank. The part of the base body protruding from the storage vessel 4 and the fastening 15 are overlapped by a cap 19 which forms the actuating member 11 with its end face.

Zur Erfassung, Einstellung und Anzeige des jeweils nächstfolgenden Anwendungszeitpunktes ist eine Erfassungseinrichtung 20 vorgesehen, die im wesentlichen nur durch einen einzigen zusätzlichen Bauteil, nämlich einen rohr- bzw. hülsenförmigen Grundkörper 21 sowie eine entsprechende Formgebung der ebenfalls aus Kunststoff bestehenden Kappe 19 gebildet ist. Die Kappe 19 bildet dabei ein gegenüber dem Grundkörper 21, der Pumpe 6 und dem Speichergefäß 4 in jeder Hubstellung drehbares Anzeige- bzw. Erfassungsglied 22, dem der Mantel der Kappe 19 als Betätigungsglied zugeordnet ist. Ein Bauteil bildet somit mit einer Stirnfläche ein Betätigungsglied 11 für die Förderbetätigung und mit einem Umfang ein Betätigungsglied 23 für die Erfassungseinrichtung 20, wobei die erforderlichen Drehkräfte so gewählt sind, daß eine Drehung durch in Drehrichtung schiebende Belastung des Betätigungsgliedes 11 nicht bzw. nur äußerst schwer möglich ist, um eine versehentliche Betätigung der Erfassungseinrichtung 20 auszuschließen.A detection device 20 is provided for detecting, setting and displaying the next time of use, which is essentially formed by only a single additional component, namely a tubular or sleeve-shaped base body 21 and a corresponding shape of the cap 19, which is also made of plastic. The cap 19 forms a display or detection element 22 which can be rotated relative to the base body 21, the pump 6 and the storage vessel 4 in each stroke position, and the jacket of the cap 19 as the actuating element assigned. A component thus forms an actuator 11 for the conveyor actuation with an end face and an actuator 23 for the detection device 20 with a circumference, the required rotational forces being selected such that rotation by the load on the actuator 11 pushing in the direction of rotation is not or only extremely difficult is possible to rule out inadvertent actuation of the detection device 20.

Der Grundkörper 21 wird mit einer Schnappverbindung 24 lediglich durch Aufstecken auf die Austrageinheit 2 dann befestigt, wenn der Austragförderer 3 und das Speichergefäß 4 bereits abgedichtet und für den Gebrauch endgültig festgelegt mit der Befestigung 15 aneinander befestigt sind. Die Befestigung 15 ist durch einen dünnen Blechring gebildet, dessen Endabschnitte radial nach innen und vorgespannt gegen voneinander abgekehrte Stirnflächen des Grundkörpers 14 und des Gefäßflansches 16 so umgebördelt sind, daß der Außenumfang des Gefäßflansches 16 im wesentlichen ganzflächig am Innenumfang des Mantels der Befestigung 15 anliegt. Die Schnappverbindung 24 weist in einem Kranz über den Innenumfang des Grundkörpers 21 verteilt vorstehende Nocken 25 auf, die im Bereich des Gefäßhalses 7 den hinteren bzw. unteren umgebördelten Endabschnitt der Befestigung 15 axial vorgespannt hintergreifen.The base body 21 is fastened with a snap connection 24 only by plugging it onto the discharge unit 2 when the discharge conveyor 3 and the storage vessel 4 have already been sealed and are finally fastened to one another with the fastening 15 for use. The attachment 15 is formed by a thin sheet metal ring, the end portions of which are flanged radially inward and prestressed against mutually facing end faces of the base body 14 and the vessel flange 16 such that the outer circumference of the vessel flange 16 rests essentially over the entire surface of the inside circumference of the jacket of the attachment 15. The snap connection 24 has in a ring distributed over the inner circumference of the base body 21 protruding cams 25 which engage axially pre-tensioned behind the rear or lower flanged end section of the fastening 15 in the region of the vessel neck 7.

Diese Nocken 25 befinden sich im Bereich eines Abschnittes des Grundkörpers 21, der unter elastisch rückfedernder Dehnung radial so aufweitbar ist, daß er beim Auflaufen der Nocken 25 während des Aufsteckens auf die zugehörigen Stirnflächen des Grundkörpers 14 bzw. des Gefäßflansches 16 von selbst aufgeweitet wird und dann in Befestigungslage radial nach innen springt. An der anderen, vorderen Stirnfläche der Befestigung 15 liegt der Grundkörper 21 mit einem einteilig über seinen Innenumfang vorstehenden Ringbund 26 unter der genannten axialen Vorspannung an. Die Außenumfangsfläche der Befestigung 15 liegt im wesentlichen ganzflächig am Innenumfang des Grundkörpers 21 unter dessen radialer Vorspannung an, so daß sich eine verhältnismäßig große Friktionsverbindung 27 als Sicherung gegen Verdrehen ergibt.These cams 25 are located in the region of a section of the base body 21 which can be expanded radially under elastic resilient expansion so that it expands by itself when the cams 25 run up while being plugged onto the associated end faces of the base body 14 or the vessel flange 16 then jumps radially inwards in the fastening position. On the other, front end face of the attachment 15, the base body 21 lies with a protruding piece over its inner circumference Annular collar 26 under the axial bias mentioned. The outer circumferential surface of the attachment 15 lies essentially over the entire surface of the inner circumference of the base body 21 under its radial prestress, so that there is a relatively large friction connection 27 as a safeguard against rotation.

Der Mantel 28 des Grundkörpers 21 weist von seinem unteren Ende etwa bis zum Ringbund 26 konstante Außen- und Innenquerschnitte auf, wobei der Außenquerschnitt im wesentlichen konstant bis zum oberen Ende durchgehen kann, jedoch oberhalb des Ringbundes 26 eine geringfügig stärkere Manteldicke vorgesehen ist, so daß der hintere Mantelabschnitt elastischer als der vordere ist. Wenigstens im Bereich des vorderen Mantelabschnittes ist der Grundkörper 21 mit der Kappe 19 über eine innenliegende Sicherungsführung bzw. Drehsicherung 29 durch axial verschiebbaren Eingriff verbunden.The jacket 28 of the base body 21 has constant outer and inner cross sections from its lower end approximately up to the annular collar 26, the outer cross section being able to pass essentially constantly up to the upper end, but a slightly thicker jacket thickness is provided above the annular collar 26, so that the rear jacket section is more elastic than the front. At least in the area of the front jacket section, the base body 21 is connected to the cap 19 by an axially displaceable engagement by means of an internal safety guide or rotation lock 29.

Zu diesem Zweck sind am Außenumfang des Grundkörpers 21 mehrere, zum Beispiel drei gleichmäßig über den Umfang verteilte, sägezahnförmige Sicherungsnocken 31 vorgesehen, denen eine größere Anzahl von zum Beispiel 24 gleichmäßig über den Innenumfang des Mantels 35 der Kappe 19 verteilte, etwa axiale Sicherungsnuten 32 zugeordnet sind. Der Mantel 35 ist jedoch federnd radial so aufweitbar, daß die Sicherungsnocken 31 mit ihren flach ansteigenden Rückenflanken bei einer Drehrichtung den Trennsteg zwischen jeweils zwei benachbarten Sicherungsnuten 32 überspringen können, während sie gegen die andere Drehrichtung durch Anlage ihrer etwa radialen Brustflanken an den zugehörigen Flanken der Sicherungsnuten 32 formschlüssig sperren. Dadurch ist eine Rastung 39 mit einer Rastteilung gebildet.For this purpose, several, for example three, sawtooth-shaped securing cams 31, for example three evenly distributed over the circumference, are provided on the outer circumference of the base body 21, to which a larger number, for example 24, approximately axial securing grooves 32, evenly distributed over the inner circumference of the jacket 35 of the cap 19, are assigned are. The jacket 35 is resiliently radially expandable so that the locking cams 31 with their flat rising back flanks can skip the separating web between two adjacent locking grooves 32 in one direction of rotation, while against the other direction of rotation by engaging their approximately radial breast flanks on the associated flanks Lock the locking grooves 32 with a positive fit. As a result, a detent 39 is formed with a detent division.

Zur Kenntlichmachung der jeweils mit der Erfassungseinrichtung 20 darzustellenden Information ist eine Anzeigeeinrichtung 37 vorgesehen, die als Anzeiger ein an das offene Ende des Mantels 35 anschließendes Anzeigefenster 38 in Form eines Manteldurchbruches aufweist. Zumindest bei Ausgangslage des Anzeigefensters 38 liegt hinter diesem ein Symbol einer Skala 40, die am Außenumfang des Grundkörpers 21 etwa in der Mitte zwischen dessen Enden bzw. im Bereich der Befestigung 15 vorgesehen ist. Die Symbole der Skala 40 sind entsprechend der genannten Rastteilung gleichmäßig über den Umfang verteilt.To identify the information to be displayed with the detection device 20, a display device 37 is provided which, as a display, has a display window 38 in the form of a jacket opening which adjoins the open end of the jacket 35. At least in the initial position of the display window 38, there is a symbol of a scale 40 behind it, which is provided on the outer circumference of the base body 21 approximately in the middle between its ends or in the region of the fastening 15. The symbols of the scale 40 are distributed evenly over the circumference in accordance with the above-mentioned latching division.

Die Kappe 19 ist mit dem Betätigungsstößel 10 auf einen Kolbenschaft der Pumpe 6 etwa parallel zur Mittelachse der Austragvorrichtung bzw. zur Steckrichtung des Grundkörpers 21 aufgesteckt. Nach dem Aufschnappen des Grundkörpers 21 kann daher auch die Kappe 19 so aufgesteckt werden, daß ihr Mantel 35 den Grundkörper 21 in Ausgangsstellung etwa auf der Hälfte seiner Länge am Außenumfang eng umgibt.The cap 19 is pushed with the actuating plunger 10 onto a piston shaft of the pump 6 approximately parallel to the central axis of the discharge device or to the plugging direction of the base body 21. After the base body 21 has been snapped on, the cap 19 can therefore also be put on in such a way that its casing 35 closely surrounds the base body 21 in the starting position about half its length on the outer circumference.

Nach Abziehen der Kappe 19 kann auch der Grundkörper 21 und damit die Skala gegen eine andere ausgewechselt werden. Der hintere Endabschnitt 36 des Grundkörpers 21 kann mit seiner Endkantenfläche bzw. deren innerer Ringkante an der Übergangsfläche zwischen dem Gefäßhals 17 und dem Gefäßbauch 18 mit Axialspannung und dadurch eventuell durch die konische Übergangsfläche geringfügig radial federnd aufgeweitet im wesentlichen abgedichtet anliegen, so daß auch bei sehr dünnwandiger Ausbildung des Grundkörpers 21 in der Größenordnung von einem Millimeter Dicke oder weniger eine hohe Steifigkeit gewährleistet ist. Die Dicke des Mantels 28 kann etwa in der Größenordnung der Dicke des Mantels 35 liegen.After removing the cap 19, the base body 21 and thus the scale can be exchanged for another. The rear end portion 36 of the base body 21 can rest with its end edge surface or its inner ring edge on the transition surface between the neck 17 and the vessel belly 18 with axial tension and thereby possibly slightly radially resiliently expanded by the conical transition surface, so that even with very much thin-walled design of the base body 21 in the order of magnitude of one millimeter thickness or less ensures high rigidity. The thickness of the jacket 28 can be approximately in the order of the thickness of the jacket 35.

Die einzelnen Bauteile bzw. Anordnungen gemäß den Unteransprüchen können jeweils gesondert, d.h. auch mehrfach vorgesehen sein oder es können diese Ausbildungen an jeweils einem einzigen Bauteil allein vorgesehen sein. Insofern können auch mehrere Halterungen, Skalenträger bzw. Skalen, Betätigungsglieder, Drehsicherungen, Rastungen u.dgl. vorgesehen sein. Z.B. Kann die Ausbildung nach Fig. 3 auch mit einer Ausführungsform zumindest ähnlich Fig. 1 zusammengefaßt werden, so daß mindestens zwei unabhängig voneinander arbeitende Erfassungseinrichtungen mit einem gemeinsamen Grundkörper oder gesonderten Grundkörpern bzw. Erfassungsgliedern vorgesehen sind.The individual components or arrangements according to the subclaims can each be separate, i.e. can also be provided multiple times or these designs can be provided on a single component alone. In this respect, several brackets, scale carriers or scales, actuators, rotation locks, detents and the like can also be used. be provided. E.g. 3 can also be combined with an embodiment at least similar to FIG. 1, so that at least two detection devices working independently of one another are provided with a common base body or separate base bodies or detection members.

In Fig. 3 sind für einander entsprechende Teile die gleichen Bezugszeichen wie in den Figuren 1 und 2, jedoch mit dem Index "a" verwendet, weshalb alle Beschreibungsteile sinngemäß für beide Ausführungsformen gelten. Die Erfassungseinrichtung 20a weist für das von der Kappe 19a, dem Betätigungsglied 11a und/oder dem Mantel 35a gesonderte Erfassungsglied 22a ein Schrittschaltwerk 23a auf, das vollständig verkapselt innerhalb der Kappe 19a und mit Radialabstand innerhalb des Mantels 35a so liegt, daß es bei jedem Arbeitshub der Austrag-Betätigung 5a um einen Schaltschritt bzw. eine Skalenteilung weiterschaltet. Hierzu ist mindestens ein schräg zur Betätigungsrichtung liegender und/oder um die mit der Pumpenachse im wesentlichen zusammenfallende Mittelachse des Schrittschaltwerkes 23a gekrümmter Schaltarm 33 bzw. 33a vorgesehen, wobei mehrere, insbesondere zwei Schaltarme 33 bzw. 33a in einem oder mehreren unterschiedlich weiten Kränzen um die Mittelachse angeordnet sein können. Der jeweilige Schaltarm 33 bzw. 33a ist an einem mit dem Erfassungsglied 22a im wesentlichen fest verbundenen und/oder gegenüber dem Grundkörper 21a im wesentlichen feststehenden Körper so mit einem zugehörigen Ende angelenkt, daß dieses eine Schwenkbewegung um eine zur Mittelachse quer liegende Achse ausführen bzw. der annähernd über seine gesamte Länge in sich biegeelastische Schaltarm 33 bzw. 33a seine Schräglage gegenüber der Mittelachse verändern kann. Ein Ende ist dabei gegenüber einem der beiden Körper, insbesondere unmittelbar gegenüber dem Erfassungsglied 22a oder dem Grundkörper 21a festgelegt, was auf einfache Weise durch einteilige Ausbildung mit diesem Körper erreicht werden kann. Das andere Ende liegt im Bereich eines Kranzes, z.B. einer Zahnung 34 bzw. 34a mit sägezahnförmigen Zähnen und bildet mit diesem Kranz ein freilaufartiges Gesperre so, daß dieses Ende aus einer Sperrstellung gegenüber der Zahnung 34 bzw. 34a nur in einer Richtung um die Mittelachse gedreht werden kann.In Fig. 3, the same reference numerals as in Figures 1 and 2, but with the index "a" are used for corresponding parts, which is why all parts of the description apply mutatis mutandis to both embodiments. The detection device 20a has, for the detection element 22a separate from the cap 19a, the actuating element 11a and / or the jacket 35a, a stepping mechanism 23a which is completely encapsulated within the cap 19a and with a radial spacing within the jacket 35a such that it is present with each working stroke the discharge actuation 5a advances by a switching step or a scale division. For this purpose, at least one switching arm 33 or 33a, which is at an angle to the actuation direction and / or is curved around the central axis of the stepping mechanism 23a, which essentially coincides with the pump axis, is provided, with several, in particular two switching arms 33 and 33a in one or more differently wide rings around the Center axis can be arranged. The respective switching arm 33 or 33a is articulated on a body which is essentially fixedly connected to the detection element 22a and / or is substantially fixed relative to the base body 21a, with an associated end such that it pivots about a crosswise to the central axis Execute axis or which can change its inclined position with respect to the central axis almost over its entire length in flexible switching arm 33 or 33a. One end is fixed with respect to one of the two bodies, in particular directly with respect to the detection element 22a or the base body 21a, which can be achieved in a simple manner by one-piece design with this body. The other end lies in the area of a ring, for example a toothing 34 or 34a with sawtooth-shaped teeth, and forms a free-wheeling ratchet with this ring such that this end is only rotated in one direction about the central axis from a blocking position with respect to the toothing 34 or 34a can be.

Das Erfassungsglied 22a ist als gegenüber seinem Außendurchmesser flacherer Schaltring in beiden Richtungen axial gesichert in der Kappe 19a, z.B. am Innenumfang des Mantels 35a, gelagert und kann axial an der inneren Stirnfläche der das Betätigungsglied 11a bildenden Stirnwand abgestützt sein. In der entgegengesetzten axialen Richtung kann das Erfassungsglied 22a durch einen Vorsprung am Innenumfang des Mantels 35a, z.B. durch einen ringförmigen Schnappnocken gesichert sein, so daß der Schaltring 22a unter elastischer Aufweitung des Mantels 35a an dem Schnappnocken vorbeigeführt und lediglich durch Einsprengen von der Kappenöffnung her montiert werden kann. In Ruhe- bzw. Ausgangsstellung der Austragvorrichtung 1a liegt das Erfassungsglied 22a in einem größeren Axialabstand von der ihm zugekehrten Stirnfläche des Grundkörpers 21a als am Ende des Pumphubes, wobei die Zahnung 34 bzw. 34a derart im Bereich einer Ringschulter versenkt in der Stirnfläche des Grundkörpers 21a bzw. des Erfassungsgliedes 22a vorgesehen sein kann, daß bei Anschlag des Erfassungsgliedes 22a am Grundkörper 21a in der Pumphub-Endstellung der Schaltarm 33 bzw. 33a annähernd gestreckt und klemmungsfrei innerhalb dieser Versenkung liegt. Werden die beiden Enden des Schaltarmes 33 bzw. 33a wie das Erfassungsglied 22a und der Grundkörper 21a beim Pumphub einander axial angenähert, so nimmt die Steigung des Schaltarmes 33 bzw. 33a ab und die Entfernung seiner Enden in Umfangsrichtung um ein Maß zu, das mindestens so groß wie das einfache oder ganzzahlige Mehrfache der Teilung der Zahnung 34 bzw. 34a ist, so daß das Erfassungsglied 22a um einen diesem Maß entsprechenden Schaltschritt weitergedreht wird. Bei dem durch die innerhalb der Pumpe 2a angeordnete Rückstellfeder für den Pumpkolben verursachten Rückhub werden die Enden des Schaltarmes 33 bzw. 33a wieder axial auseinander bewegt, wodurch seine Steigung zunimmt. Das Erfassungsglied 22a ist dabei durch ein freilaufartiges Gesperre 29a gegen Drehung entgegen seiner Schalt-Drehrichtung gesichert, so daß das freie Ende des Schaltarmes 33 bzw. 33a über die schräg ansteigenden Rückenflächen der Zahnung 34 bzw. 34a gleitet, bis es wieder vor eine sperrende Zahnbrustfläche springt und damit wieder in Ausgangsstellung für den nächsten Schaltschritt steht.The detection member 22a is axially secured in the cap 19a, for example on the inner circumference of the jacket 35a, as a switching ring which is flatter in relation to its outer diameter and can be axially supported on the inner end face of the end wall forming the actuating member 11a. In the opposite axial direction, the detection member 22a can be secured by a protrusion on the inner circumference of the casing 35a, for example by an annular snap cam, so that the switching ring 22a moves past the snap cam while the jacket 35a is elastically widened and is mounted only by being blown in from the cap opening can be. In the rest or starting position of the discharge device 1a, the detection member 22a lies at a greater axial distance from the end face of the base body 21a facing it than at the end of the pump stroke, the teeth 34 and 34a being recessed in the area of an annular shoulder in the end face of the base body 21a or the detection member 22a can be provided that when the detection member 22a stops on the base body 21a in the pump stroke end position, the switching arm 33 or 33a is approximately stretched and is free of jamming within this recess. Become the two ends of the switching arm 33 and 33a as the detection member 22a and the base body 21a axially approach each other during the pumping stroke, the slope of the switching arm 33 and 33a decreases and the distance of its ends in the circumferential direction increases by an amount that is at least as large how is the simple or integral multiple of the pitch of the teeth 34 or 34a, so that the detection element 22a is rotated further by a switching step corresponding to this dimension. During the return stroke caused by the return spring for the pump piston arranged inside the pump 2a, the ends of the switching arm 33 or 33a are moved axially apart again, as a result of which its slope increases. The detection member 22a is secured against rotation against its switching direction by a freewheel-type locking mechanism 29a, so that the free end of the switching arm 33 or 33a slides over the inclined back surfaces of the teeth 34 or 34a until it again faces a blocking tooth face jumps and is thus in the starting position for the next switching step.

Das Gesperre 29a wirkt zwischen dem Erfassungsglied 22a und der Kappe 19a, wobei es im Bereich einer Mantelfläche und/oder mindestens einer Stirnfläche des Erfassungsgliedes 22a vorgesehen sein kann. Anstatt das Gesperre 29a im Bereich der Innenseite der Stirnwand der Kappe 19a und etwa zwischen dem Außenumfang des Betätigungsstößels 10a und dem Innenumfang des Außenmantels des Austragstutzens 12a vorzusehen, kann es zweckmäßig auch an der anderen Stirnseite des Erfassungsgliedes 22a liegen, wobei es zweckmäßig bis an den Außenumfang des Erfassungsgliedes 22a reicht. Anstatt eines allein kraftschlüssig bzw. durch entsprechend hohe Reibung wirkenden Gesperres 29a ist zweckmäßig auch ein Rast-Gesperre 39a vorgesehen, das, wie anhand des Gesperres 34 bzw. 34a beschrieben, in einem Kranz eine Zahnung 32a aufweist, in welche in einer Drehrichtung überspringbar zwei oder mehr über den Umfang verteilte Rastnocken 31a eingreifen, die zweckmäßig an der zugehörigen Stirnfläche des Erfassungsgliedes 22a vorstehen, bis zu dessen Außenumfang reichen können und/oder in dem Schnappnocken für das Erfassungsglied 22a vorgesehen bzw. durch diesen gebildet sind.The locking mechanism 29a acts between the detection element 22a and the cap 19a, it being possible for it to be provided in the region of an outer surface and / or at least one end face of the detection element 22a. Instead of providing the locking mechanism 29a in the region of the inside of the end wall of the cap 19a and approximately between the outer periphery of the actuating plunger 10a and the inner periphery of the outer casing of the discharge nozzle 12a, it can also be expediently located on the other end face of the detection element 22a, it being expedient to the The outer circumference of the detection member 22a is sufficient. Instead of a locking mechanism 29a acting solely by force or by means of a correspondingly high friction, it is also expedient to provide a locking mechanism 39a which, as described with reference to the locking mechanism 34 or 34a, has teeth 32a in a ring, in which in one direction of rotation skipably engage two or more detent cams 31a distributed over the circumference, which expediently protrude from the associated end face of the detection element 22a, can extend to the outer circumference thereof and / or are provided in the snap-in cam for the detection element 22a or are formed by the latter.

Bei dieser Ausführungsform ist die durch die Kappe 19a gebildete Lagerung für das Erfassungsglied 22a zweckmäßig im wesentlichen in jeder Hubstellung gegenüber dem Grundkörper 21a gegen Verdrehen gesichert, wobei in mindestens einer Endstellung auch eine Drehbarkeit gemäß Fig. 1 vorgesehen sein kann. Die Verdrehsicherung 30 weist in Längsnuten eingreifende Nocken auf, die zweckmäßig einteilig über den Innenumfang des Mantels 35a vorstehen und in Axialnuten am Außenumfang eines in der Außenweite geringfügig reduzierten Endabschnittes des Grundkörpers 21a eingreifen. Diese Nocken können gleichzeitig die Schnappnocken für das Erfassungsglied 22a bzw. die Zahnung oder die Rastnocken des Rastgesperres 39a bilden und liegen mit Abstand von der offenen Stirnseite der Kappe 19a.In this embodiment, the bearing for the detection member 22a formed by the cap 19a is expediently secured against rotation in essentially every stroke position with respect to the base body 21a, wherein in at least one end position it can also be rotated according to FIG. 1. The anti-rotation device 30 has cams engaging in longitudinal grooves which expediently project in one piece over the inner circumference of the casing 35a and engage in axial grooves on the outer circumference of an end section of the base body 21a which is slightly reduced in external width. These cams can simultaneously form the snap cams for the detection member 22a or the toothing or the locking cams of the locking mechanism 39a and are at a distance from the open end face of the cap 19a.

Dadurch, daß der Grundkörper 21a unabhängig von der Pumpe 2a bzw. nur nach deren Montage am Speichergefäß 4a montierbar ist, kann er mit seinem Mantel 28a gemeinsam mit der Kappe 19a gegenüber der Pumpe 2a bzw. dem Speichergefäß 4a auf der Befestigung 15a um die Mittelachse verhältnismäßig leichtgängig manuell drehbar gelagert sein, ohne daß dadurch die Anzeige der Erfassungseinrichtung 20a verändert würde, so daß die Anzeige jederzeit in die günstigste Blickposition gebracht werden kann. Der Grundkörper 21a ist dabei durch eine von der Zahnung 34 bzw. 34a abgekehrt liegende innere Ringschulter 26a, die zur Erzielung einer gedrängten Axialerstreckung der Erfassungseinrichtung innerhalb des in Ausgangsstellung befindlichen Mantels 35a liegt, an einer zum Betätigungsglied 11a weisenden, ringförmigen Stirnfläche des die Befestigung 15a bildenden Krimpringes abgestützt. Diese bis zum Außenumfang des Krimpringes reichende Stirnfläche ist durch einen Abschnitt des Krimpringes gebildet, welcher an der Innenseite im wesentlichen berührungsfrei und daher elastisch geringfügig nachgiebig ist, so daß durch diese Abstützung und diejenige der Schnappverbindung 24a bzw. des Nockens 25a eine im wesentlichen axialspielfreie Lagerung des Grundkörpers 21a erzielt werden kann. Hierzu kann auch die axial rückstellende Federwirkung des jeweiligen Schaltarmes 33 bzw. 33a beitragen, welcher nicht nur beim Rückhub die Rückstellfeder der Pumpe 2a unterstützt, sondern stets auch das Erfassungsglied 22a und den Grundkörper 21a axial auseinander drückt, so daß der Erfassungsring 22a federnd gegen die Stirnfläche der Kappe 19a und der Grundkörper 21a mit seiner inneren Ringschulter 26a angedrückt werden. Der Schnappnocken 25a kann auch ringförmig ununterbrochen über den Innenumfang des Mantels 28a durchgehen. Zwischen der Ringschulter 26a und der Zahnung 34a und/oder in deren Bereich kann der Grundkörper 21a mit seinem Innenumfang auch gegenüber dem Außenumfang des Gehäuses der Pumpe 2a bzw. des Betätigungsstößels 10a durch entsprechend enge Ausbildung zentriert sein und dadurch die Stabilität gegen Querkräfte erhöht werden.Because the base body 21a can be mounted independently of the pump 2a or only after it has been installed on the storage vessel 4a, it can, with its jacket 28a, together with the cap 19a relative to the pump 2a or the storage vessel 4a on the fastening 15a about the central axis be relatively rotatably manually rotatable, without changing the display of the detection device 20a, so that the display can be brought into the most favorable viewing position at any time. The base body 21a is connected to an actuating member 11a by an inner annular shoulder 26a lying away from the teeth 34 or 34a, which lies within the jacket 35a in the starting position in order to achieve a compact axial extent of the detection device. annular end face of the Crimean ring forming the attachment 15a is supported. This end face, which extends to the outer circumference of the crimp ring, is formed by a section of the crimp ring which on the inside is essentially contact-free and therefore elastically slightly flexible, so that this support and that of the snap connection 24a or the cam 25a provide essentially axial play-free mounting of the base body 21a can be achieved. The axially resetting spring action of the respective switching arm 33 or 33a can also contribute to this, which not only supports the return spring of the pump 2a during the return stroke, but also always axially presses the detection element 22a and the base body 21a apart, so that the detection ring 22a resiliently against the End face of the cap 19a and the base body 21a are pressed with its inner annular shoulder 26a. The snap cam 25a can also pass continuously in a ring over the inner circumference of the jacket 28a. Between the annular shoulder 26a and the toothing 34a and / or in the area thereof, the base body 21a with its inner circumference can also be centered with respect to the outer circumference of the housing of the pump 2a or the actuating plunger 10a by means of a correspondingly narrow design, thereby increasing the stability against transverse forces.

Die Skala 40 ist in diesem Fall unmittelbar am Außenumfang des Erfassungsgliedes 22a vorgesehen. Sie läuft im Bereich eines den Mantel 35a unmittelbar benachbart zur Innenseite der Stirnwand der Kappe 19a durchsetzenden Anzeigefensters 38a der Anzeigeeinrichtung 37a. In Umfangsrichtung ist im Abstand zur Anzeigeeinrichtung 37a zweckmäßig eine weitere Anzeigeeinrichtung 37b vorgesehen, die z.B. den ersten und/oder den letzten Betätigungshub einer vorbestimmten Gesamt-Anzahl von Betätigungshüben anzeigt, die mit der Austragvorrichtung 1a durchgeführt werden können. Am Ende des letzten Betätigungshubes kann das Betätigungsglied 11a und/oder das Erfassungsglied 22a gegen weitere Arbeitsbewegungen gesperrt sein, z.B. durch einen Nocken am Erfassungsglied 22a, welcher gegen einen Gegenanschlag der Kappe 19a aufläuft und dadurch mittelbar über die Schaltarme 33, 33a auch gegen den Betätigungshub sperrt.In this case, the scale 40 is provided directly on the outer circumference of the detection element 22a. It runs in the area of a display window 38a of the display device 37a which passes through the jacket 35a immediately adjacent to the inside of the end wall of the cap 19a. A further display device 37b is expediently provided in the circumferential direction at a distance from the display device 37a, which displays, for example, the first and / or the last actuation stroke of a predetermined total number of actuation strokes which can be carried out with the discharge device 1a. At the end of the last actuation stroke, the actuator 11a and / or the detection element 22a can be blocked against further working movements, for example by a cam on the detection element 22a, which runs against a counter-stop of the cap 19a and thereby also indirectly locks against the actuation stroke via the switching arms 33, 33a.

Anstatt die, zweckmäßig flach streifenförmigen Schaltarme 33, 33a im Abstand vom Innen- und/oder Außenumfang mit der zugehörigen Stirnseite des Erfassungsgliedes 22a zu verbinden, können sie auch im Bereich eines der genannten Umfänge an das Erfassungsglied 22a so anschließen, daß sie mit einem Ende der Zahnung 34 bzw. 34a zugeordnet sind und mit dem anderen Ende einen Rastnocken für das Rastgesperre bilden. Günstigere Hebelverhältnisse ergeben sich jedoch, wenn die Schaltarme 33, 33a verhältnismäßig nahe beim Innenumfang des Mantels 35a liegen. Die vorbestimmte Gesamtanzahl von Schaltschritten des Erfassungsgliedes 22a ergibt zweckmäßig insgesamt einen Drehwinkel von weniger als 360° bzw. 180° bzw. sogar weniger als 90°, so daß dann, wenn Schaltarme 33, 33a sowohl am Erfassungsglied 22a als auch am Grundkörper 21a angelenkt sind, keine Maßnahmen getroffen werden müssen, damit diese Schaltarme aneinander vorbeilaufen bzw. einander überfahren können, weil sie am Beginn des ersten Betätigungshubes in einem Winkelabstand voneinander liegen, der größer als dieser maximale Drehwinkel ist.Instead of connecting the appropriately flat strip-shaped switching arms 33, 33a at a distance from the inner and / or outer circumference to the associated end face of the detection element 22a, they can also connect to the detection element 22a in the region of one of the above-mentioned circumferences so that they have one end the teeth 34 and 34a are assigned and form with the other end a locking cam for the locking mechanism. However, more favorable lever ratios result if the switching arms 33, 33a are relatively close to the inner circumference of the jacket 35a. The predetermined total number of switching steps of the detection element 22a expediently results in a total rotation angle of less than 360 ° or 180 ° or even less than 90 °, so that when switching arms 33, 33a are articulated both on the detection element 22a and on the base body 21a , no measures have to be taken so that these switching arms can run past each other or run over each other, because at the beginning of the first actuation stroke they are at an angular distance from one another which is greater than this maximum angle of rotation.

Da die Erfassungseinrichtung 20a bzw. der Grundkörper 21a und/oder die Kappe 19a einschließlich des Erfassungsgliedes 22a zerstörungsfrei von der übrigen Austragvorrichtung 1a leicht lediglich durch Abziehen gelöst bzw. ausgewechselt werden kann, ist auch eine einfache Entsorgung dieser Bauteile am Ende des Gebrauches der Austragvorrichtung 1a möglich, wobei alle diese Teile zweckmäßig aus Kunststoff bzw. im wesentlichen gleichem Werkstoff bestehen.Since the detection device 20a or the base body 21a and / or the cap 19a including the detection member 22a can be easily detached or replaced from the rest of the discharge device 1a without destruction, simply by pulling them off, this component is also easy to dispose of when the discharge device 1a is used possible, all of these parts suitably made of plastic or essentially the same material.

Claims (11)

  1. Discharge apparatus (1) for media, with a discharge actuating means (5) for a discharge unit (2), which has a discharging means (3) and for the latter a fastening (15) on a medium reservoir (4), as well as at least one determining device (20) controllable by means of an actuator (23) and in particular in the form of a counting mechanism for discharge processes, the determining device (20) having two determining control members (22, 28) and is mounted on the discharge unit (2) with a body (21) serving as a carrier of one of the control members and in which the body (21) of the determining device (20) is formed by a component separate from the fastening (15) of the discharging means (3), characterized in that
    a) the fastening (15) is a crimp ring,
    b) that the body (21) has a ring shoulder (26) projecting over its inner circumference for engagement on an end face of the crimp ring directed towards the discharge side,
    c) that the body (21) is provided with a snap connection (24) for position securing on the crimp ring,
    d) that the snap connection (24) has at least one snap cam (25) for engagement on an end face of the crimp ring directed towards the medium reservoir (4) and
    e) that the body (21) forms a cover jacket for protecting the crimp ring.
  2. Discharge apparatus according to claim 1, characterized in that the body (21) of the determining device (20) forms an at least partial cover for a vessel neck (17) of the medium reservoir (4) and/or a portion of a body (14) of the discharging means (3) projecting over its fastening, preferably being constructed as a substantially closed cover over its length.
  3. Discharge apparatus according to one of the preceding claims, characterized in that the body (21) of the determining device (20) projects substantially freely over the front face of the fastening (15) of the discharging means (3) pointing towards the medium reservoir (4) and/or to the discharge side and preferably extends up to an approximately conical transition surface between a vessel neck (17) and a vessel bulge (18) of the medium reservoir and that preferably the body (21) of the determining device (20) forms a holder for the fastening (15) engaging at least partly with pretension on the outer circumference and/or on at least one face of the fastening (15) of the discharging means (3).
  4. Discharge apparatus according to one of the preceding claims, characterized in that the body (21) of the determining device (20) is formed by a sleeve having substantially constant inside and outside diameters over its length.
  5. Discharge apparatus according to one of the preceding claims, characterized in that the body (21) of the determining device (20) is constructed for a mounting support exclusively prevented from rotating by frictional engagement and which is preferably resiliently expandable at least in the vicinity of the mounting support and/or that the body (21) of the determining device (20) has a scale carrier and is in particular constructed in one piece therewith and which is preferably provided on the outer circumference with at least one scale (40).
  6. Discharge apparatus according to one of the preceding claims, characterized in that the body (21) of the determining device (20), particularly at least in the vicinity of a scale (40) is constructed for engagement in a jacket (35) movable with respect thereto and which is preferably formed by a cap-like actuator (11) of the discharge actuating means (5) mounted in rotary manner and/or axially over a delivery stroke and which is at least partly guided in a mounting support independent of the body (21).
  7. Discharge apparatus according to one of the preceding claims, characterized in that the determining device (20) has an indicating device (37) visible from the outside with an indicator adjustable with respect to a scale (40), such as an indicating window (38), which is preferably provided on a jacket (35) at least partly surrounding the body (21) and in particular an actuator (11) of the discharge actuating means (5) and/or that a determining member (22) movable with respect to the body (21) of the determining device (20) is movable in stepwise locking manner and/or only in one movement direction and is in particular engaged with the body (21) by means of a freewheel-like ratchet.
  8. Discharge apparatus according to one of the preceding claims, characterized in that a determining member (22) of the determining device (20) for adjusting the determination position is operable independently of the discharge actuating means (5), particularly by direct manual rotation by the actuator (11, 23) thereof and/or that a determining member (22) of the determining device (20) is prevented from rotating with respect to the body (21) substantially in any position and particularly overcomeable in force-dependent manner and preferably on the inner circumference of the determining member (22) are provided circumferentially distributed, axial locking members (32) and on the outer circumference of the body (21) projecting locking cams (31) of the ratchet as a rotation preventing means (29).
  9. Discharge apparatus according to one of the preceding claims characterized in that the determining device (20a) is operable with a stepping mechanism (23a) or the like as a function of the discharge actuation, that in particular the determining member (22a) is placed as an operating ring between the body (21a) and a facing, inner face of the actuator (11a) of the discharge actuating means (5a) and/or is driven by at least one operating arm (33, 33a) pivotably engaging in jump-over manner in a tooth system (34, 34a) and preferably the determining member (22a) is mounted in axially secured manner in the actuator (11a) of the discharge actuating means (5a) and/or is directly secured with respect thereto by the locking mechanism (29a, 39a).
  10. Discharge apparatus according to one of the preceding claims, characterized in that with the actuator (11, 23) of the discharge actuating means (5) and/or the determining device (20) removed and with the discharging means (3) fully assembled, the body (21) of the determining device (20) can be fitted to the discharge unit (2) and preferably the actuator (11, 23) can be connected via a plug connection to the discharging means (3) and/or the body (21).
  11. Discharge apparatus according to one of the preceding claims, characterized in that the determining device (20) is exclusively formed by two or three components, whereof one is preferably formed by the actuator (11) of the discharge actuating means (5).
EP91112539A 1990-08-31 1991-07-26 Dispenser for fluid Expired - Lifetime EP0472915B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4027671 1990-08-31
DE4027671 1990-08-31

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EP0472915A2 EP0472915A2 (en) 1992-03-04
EP0472915A3 EP0472915A3 (en) 1992-03-25
EP0472915B1 true EP0472915B1 (en) 1996-04-24
EP0472915B2 EP0472915B2 (en) 2002-03-20

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US (1) US5228586A (en)
EP (1) EP0472915B2 (en)
JP (1) JP3164229B2 (en)
AT (1) ATE137142T1 (en)
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Also Published As

Publication number Publication date
EP0472915A3 (en) 1992-03-25
ES2086438T5 (en) 2002-10-16
JPH05124688A (en) 1993-05-21
US5228586A (en) 1993-07-20
EP0472915B2 (en) 2002-03-20
JP3164229B2 (en) 2001-05-08
ATE137142T1 (en) 1996-05-15
ES2086438T3 (en) 1996-07-01
DE59107710D1 (en) 1996-05-30
EP0472915A2 (en) 1992-03-04

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