EP0352369B1 - Portable motor-driven electrical tool - Google Patents

Portable motor-driven electrical tool Download PDF

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Publication number
EP0352369B1
EP0352369B1 EP88121465A EP88121465A EP0352369B1 EP 0352369 B1 EP0352369 B1 EP 0352369B1 EP 88121465 A EP88121465 A EP 88121465A EP 88121465 A EP88121465 A EP 88121465A EP 0352369 B1 EP0352369 B1 EP 0352369B1
Authority
EP
European Patent Office
Prior art keywords
mixer
driven
coupling element
cover
cartridges
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
EP88121465A
Other languages
German (de)
French (fr)
Other versions
EP0352369A1 (en
Inventor
Rudolf Ing.(Grad.) Hoyer
Wilhelm Dipl.Ing. Geis
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.)
Techtronic Industries GmbH
Original Assignee
Licentia Patent Verwaltungs 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
Priority claimed from DE3824021A external-priority patent/DE3824021A1/en
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0352369A1 publication Critical patent/EP0352369A1/en
Application granted granted Critical
Publication of EP0352369B1 publication Critical patent/EP0352369B1/en
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Classifications

    • 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
    • B05C17/00553—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 means allowing the stock of material to consist of at least two different components
    • B05C17/00566—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 means allowing the stock of material to consist of at least two different components with a dynamic mixer in the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0722—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis perpendicular with respect to the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • 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
    • B05C17/0103—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 with electrically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application

Definitions

  • the invention relates to a hand-held, motor-driven power tool with a device for metering and mixing at least two substances and for supplying the mixed substances to a processing point, the device being equipped with receiving pockets for cartridges which contain the substances to be mixed with one another.
  • each of which can be pressed out of the relevant cartridge with the aid of an extrusion member and the extrusion members can be actuated by a drive element driven by the shaft of the drive motor, and each of the substances to be mixed reaches a mixer via a feed line, at the outlet of which an outlet nozzle for the mixer substance can be connected is, and wherein the mixer with the mixer head and the feed lines to the cartridges form an interchangeable unit and the mixer is driven by a spindle gear which drives on a pin of the extrusion actuating drive is rotatably supported and contains a hollow hub via which the mixer can be set in rotation.
  • a device for measuring, mixing and dispensing two-component materials which contains a double-piston arrangement, which is moved by a compressed air cylinder against cartridges located in cans.
  • the mixing head provided with a mixing part is driven by an air motor.
  • FR-A-2 526 348 shows and describes an electric machine tool equipped with a two-stage gear, in which the desired gear stage can be activated by means of a slide.
  • a spindle is united with the slide, the rear end of which is pointed and made of electrically insulating material. This end is in the position of the low speed slider between two elastic metal contacts. If the slide is moved forward, the pointed end of the spindle disengages from the Metal contacts, which then close and trigger a switching process in the control circuit of the power tool.
  • a power tool of the generic type is the subject of DE-A-37 23 517.
  • the mixer with the Mitscherkopf including the feed lines to the cartridges form an interchangeable unit that can be covered by a hinged cover that can be locked in its cover position, which can also extend partially over the mixer-side area of the cartridges. This unit can also be completed by the cartridges connected to the feed lines.
  • the mixer is driven by a spindle gear provided with a hollow hub, which is rotatably mounted on a pin of the drive element actuating the extrusion members.
  • the end of the hollow hub is provided with claws which are to be brought into engagement with recesses provided on the mixer.
  • the invention has for its object to automate the coupling process between the mixer and the driving shaft and thereby make it simple and reliable.
  • the hollow hub 36 of the spindle gear 33 which is rotatably mounted on a pin 3 'of the threaded spindle 3 by means of a needle bearing 34, does not have any clutch claws, but rather receives the rear end of a shaft journal 66.
  • the shaft journal 66 is rotatably combined with the hollow hub 36 and provided with a spline 67 (spline).
  • a coupling element 68 provided with a corresponding longitudinal toothing 67 'is axially displaceable.
  • At least two coupling pins 69 which are offset with respect to one another in the circumferential direction, are accommodated in the coupling element 68, each of which is under the action of a spring 70.
  • the coupling pins 69 protrude beyond the front side of the coupling element 68 facing the mixer 26 and can be displaced parallel to the axis of the shaft journal 66 against the restoring force of the springs 70.
  • the coupling pins 69 of the coupling element cooperate with recesses 37 made on the mixer 26 and set the mixer 26 in rotation in the event of an engagement.
  • the coupling element 68 contains an annular groove 71 into which the bent and fork-shaped leg 72 of a sliding member 73 designed as an angle piece engages. 3 and 4, the sliding member 73 is provided in its rear end region with a bearing block 74 in the form of two spaced-apart tabs 76, 76 ', each having a through hole 75, 75'.
  • a bearing block 74 in the form of two spaced-apart tabs 76, 76 ', each having a through hole 75, 75'.
  • the push rod 78 is provided with a longitudinal recess 79 through which a guide pin 80, defined in its position by the through bores 75 and 75 'in the bearing block 74, engages.
  • the push rod 78 has an extension 82 provided with a continuous transverse bore 81, which engages in a recess 83 in the cover 32 and by means of a cylindrical bolt 84 passing through the bore 81, which in bearing bores 85, 85 'in the cover wall 32 'Sits, is rotatably mounted.
  • the bolt 84 is secured against axial displacement.
  • the pivot axis 86 of the cover 32 is located in a bracket 87 of the gear housing 1.
  • the supply lines 24 and 25 leading from the cartridges 20, 21 shown here in broken lines to the mixer 26 are provided on the cartridge side with coupling parts 90, which are detachably combined with the supply lines 24, 25 and engage the outlet connections of the cartridges 20, 21 reach over so that the connection coupling part _ outlet of the cartridge is also detachable.
  • the two Ausprepglieder are designated 91 and 92.
  • the device described above works as follows: When the cover 32 is pivoted up or back about the axis 86, the push rod 78 articulated on the cover 32 is carried backwards and thus also pulls the sliding member 73 to the rear. Whose fork-shaped leg 72 takes the coupling element 68 with it, so that its coupling pin 69 disengage from the recesses 37 of the mixer 26.
  • the mixer 26 with the two feed lines 24 and 25 and the two cartridges 20 and 21 can thus optionally be removed as a coherent unit from the power tool or device and replaced by a new or different unit.
  • the coupling pins 69 come under spring tension to bear against the end face of the mixer 26 provided with the recesses 37.
  • the coupling pins then automatically snap into the corresponding recesses 37 in the mixer head 26.
  • the coupling pins can also come into the engaged position when the cover 32 is closed before the power tool is switched on. In any case, simple operation with optimal operational safety is guaranteed.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food-Manufacturing Devices (AREA)

Description

Die Erfindung bezieht sich auf ein handgeführtes, motorisch angetriebenes Elektrowerkzeug mit einer Einrichtung zum Dosieren und Mischen von wenigstens zwei Substanzen sowie zum Zuführen der vermischten Substanzen zu einer Bearbeitungsstelle, wobei die Einrichtung mit Aufnahmetaschen für Kartuschen ausgerüstet ist, welche die miteinander zu vermischenden Substanzen enthalten, die jeweils mit Hilfe eines Auspreßglieds aus der betreffenden Kartusche herausdrückbar und die Auspreßglieder durch ein über die Welle des Antriebsmotors angetriebenes Antriebselement betätigbar sind, und wobei jede der zu vermischenden Substanzen über eine Zuleitung zu einem Mischer gelangt, an dessen Ausgang eine Austrittsdüse für die Mischersubstanz anschließbar ist, und wobei der Mischer mit dem Mischerkopf und den Zuleitungen zu den Kartuschen eine austauschbare Einheit bilden und der Mischer durch ein Spindelzahnrad angetrieben ist, das auf einem Zapfen des Auspreßglieder betätigenden Antriebselements drehbar gelagert ist und eine Hohlnabe enthält, über die der Mischer in Drehung versetzbar ist.The invention relates to a hand-held, motor-driven power tool with a device for metering and mixing at least two substances and for supplying the mixed substances to a processing point, the device being equipped with receiving pockets for cartridges which contain the substances to be mixed with one another. each of which can be pressed out of the relevant cartridge with the aid of an extrusion member and the extrusion members can be actuated by a drive element driven by the shaft of the drive motor, and each of the substances to be mixed reaches a mixer via a feed line, at the outlet of which an outlet nozzle for the mixer substance can be connected is, and wherein the mixer with the mixer head and the feed lines to the cartridges form an interchangeable unit and the mixer is driven by a spindle gear which drives on a pin of the extrusion actuating drive is rotatably supported and contains a hollow hub via which the mixer can be set in rotation.

Durch die DE-A-25 37 022 ist ein Gerät zum Messen, Mischen und Ausgeben von zwei Komponenten aufweisenden Materialien bekannt, das eine Doppelkolbenanordnung enthält, die durch einen mit Druckluft beaufschlagten Luftzylinder gegen in Büchsen befindliche Patronen bewegt wird. Der mit einem Mischteil versehene Mischkopf wird dabei mittels eines Luftmotors angetrieben.From DE-A-25 37 022 a device for measuring, mixing and dispensing two-component materials is known, which contains a double-piston arrangement, which is moved by a compressed air cylinder against cartridges located in cans. The mixing head provided with a mixing part is driven by an air motor.

In der FR-A-2 526 348 ist eine mit einem zweistufigen Getriebe ausgerüstete Elektrowerkzeugmaschine dargestellt und beschrieben, bei der die jeweils gewünschte Getriebestufe mittels eines Schiebers zuschaltbar ist. Mit dem Schieber ist eine Spindel vereinigt, deren hinteres Ende spitz ausgebildet ist und aus elektrisch isolierendem Material besteht. Dieses Ende befindet sich in der Position des Schiebers für die geringe Geschwindigkeit zwischen zwei elastischen Metallkontakten. Wird der Schieber nach vorne bewegt, kommt das spitze Ende der Spindel außer Eingriff mit den Metallkontakten, die sich dann schließen und einen Schaltvorgang im Steuerkreis der Elektrowerkzeugmaschine auslösen.FR-A-2 526 348 shows and describes an electric machine tool equipped with a two-stage gear, in which the desired gear stage can be activated by means of a slide. A spindle is united with the slide, the rear end of which is pointed and made of electrically insulating material. This end is in the position of the low speed slider between two elastic metal contacts. If the slide is moved forward, the pointed end of the spindle disengages from the Metal contacts, which then close and trigger a switching process in the control circuit of the power tool.

Ein Elektrowerkzeug der gattungsgemäßen Art ist Gegenstand der DE-A-37 23 517.A power tool of the generic type is the subject of DE-A-37 23 517.

Der Mischer mit dem Mitscherkopf einschließlich der Zuleitungen zu den Kartuschen bilden hierbei eine austauschbare Einheit, die durch einen aufklappbaren, in seiner Abdecklage arretierbaren Deckel abdeckbar ist, der sich zum Teil auch noch über den mischerseitigen Bereich der Kartuschen hinweg erstrecken kann. Diese Einheit kann dabei noch durch die an die Zuleitungen angeschlossenen Kartuschen vervollständigt sein. Der Antrieb des Mischers erfolgt durch ein mit einer Hohlnabe versehenes Spindelzahnrad, das drehbar auf einem Zapfen des die Auspreßglieder betätigenden Antriebselements gelagert ist. Die Hohlnabe ist stirnseitig mit Klauen versehen, welche mit am Mischer vorgesehenen Ausnehmungen in Eingriff zu bringen sind.The mixer with the Mitscherkopf including the feed lines to the cartridges form an interchangeable unit that can be covered by a hinged cover that can be locked in its cover position, which can also extend partially over the mixer-side area of the cartridges. This unit can also be completed by the cartridges connected to the feed lines. The mixer is driven by a spindle gear provided with a hollow hub, which is rotatably mounted on a pin of the drive element actuating the extrusion members. The end of the hollow hub is provided with claws which are to be brought into engagement with recesses provided on the mixer.

Beim Einsetzen einer neuen, aus dem Mischer mit Mischerkopf, den Zuleitungen zu den Kartuschen und gegebenenfalls auch die Kartuschen mit umfassenden Einheit in die hierfür vorgesehene Aufnahme im Elektrowerkzeug müssen die Klauen der antreibenden Hohlnabe in Eingriff mit den Ausnehmungen im Mischer gebracht werden. Dieser Kupplungsvorgang ist verhältnismäßig umständlich und birgt die Gefahr der Fehlerhaftigkeit in sich.When inserting a new one from the mixer with mixer head, the feed lines to the cartridges and possibly also the cartridges with a comprehensive unit into the receptacle provided for this purpose in the power tool, the claws of the driving hollow hub must be brought into engagement with the recesses in the mixer. This coupling process is relatively cumbersome and involves the risk of errors.

Der Erfindung liegt die Aufgabe zugrunde, den Kupplungsvorgang zwischen dem Mischer und der antreibenden Welle zu automatisieren und dadurch einfach und betriebssicher zu machen.The invention has for its object to automate the coupling process between the mixer and the driving shaft and thereby make it simple and reliable.

Diese Aufgabe ist erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst.This object is achieved with the characterizing features of claim 1.

Weiterbildungen und zweckmäßige Ausgestaltungen der Erfindung werden in den Unteransprüchen angegeben.Further developments and expedient refinements of the invention are specified in the subclaims.

Die Erfindung wird im nachstehenden anhand der Zeichnung, die ein Ausführungsbeispiel schematisch veranschaulicht, erläutert.The invention is explained below with reference to the drawing, which schematically illustrates an embodiment.

Es zeigen:

  • Fig. 1 eine Seitenansicht des Elektrowerkzeugs teilweise im Schnitt,
  • Fig. 2 eine Ansicht entlang des Schnittes A-A durch Fig. 1,
  • Fig. 3 eine Seitenansicht des Schiebeglieds,
  • Fig. 4 eine Ansicht des Schiebeglieds gemäß Fig. 3 in Richtung A,
  • Fig. 5 eine Seitenansicht der Schubstange,
  • Fig. 6 eine Ansicht der Schubstange gemäß Fig. 5 von oben.
Show it:
  • 1 is a side view of the power tool partially in section,
  • 2 shows a view along the section AA through FIG. 1,
  • 3 is a side view of the sliding member,
  • 4 is a view of the sliding member of FIG. 3 in the direction A,
  • 5 is a side view of the push rod,
  • Fig. 6 is a view of the push rod of FIG. 5 from above.

Wie insbesondere aus Figur 1 ersichtlich ist, weist die Hohlnabe 36 des mittels Nadellager 34 drehbar auf einem Zapfen 3′ der Gewindespindel 3 gelagerten Spindelzahnrads 33 keine Kupplungsklauen auf, sondern sie nimmt das rückwärtige Ende eines Wellenzapfens 66 auf. Der Wellenzapfen 66 ist verdrehfest mit der Hohlnabe 36 vereinigt und mit einer Längsverzahnung 67 (Keilwelle) versehen. Auf dem die Längsverzahnung 67 aufweisenden Abschnitt des Wellenzapfens 66 ist ein mit einer korrespondierenden Längsverzahnung 67′ versehenes Kupplungselement 68 axial verschiebbar angeordnet. Im Kupplungselement 68 sind wenigstens zwei in Umfangsrichtung gegeneinander versetzte Kupplungszapfen 69 untergebracht, die jeweils unter der Wirkung einer Feder 70 stehen. Die Kupplungszapfen 69 ragen bei entspannten Federn 70 über die dem Mischer 26 zugewandte Frontseite des Kupplungselements 68 hinaus und sind gegen die Rückstellkraft der Federn 70 parallel zur Achse des Wellenzapfens 66 verschiebbar. Die Kuplungszapfen 69 des Kupplungselements wirken mit am Mischer 26 angebrachten Ausnehmungen 37 zusammen und versetzen den Mischer 26 im Eingriffsfall in Drehung.As can be seen in particular from FIG. 1, the hollow hub 36 of the spindle gear 33, which is rotatably mounted on a pin 3 'of the threaded spindle 3 by means of a needle bearing 34, does not have any clutch claws, but rather receives the rear end of a shaft journal 66. The shaft journal 66 is rotatably combined with the hollow hub 36 and provided with a spline 67 (spline). On the portion of the shaft spline 66 having the longitudinal toothing 67, a coupling element 68 provided with a corresponding longitudinal toothing 67 'is axially displaceable. At least two coupling pins 69, which are offset with respect to one another in the circumferential direction, are accommodated in the coupling element 68, each of which is under the action of a spring 70. When the springs 70 are relaxed, the coupling pins 69 protrude beyond the front side of the coupling element 68 facing the mixer 26 and can be displaced parallel to the axis of the shaft journal 66 against the restoring force of the springs 70. The coupling pins 69 of the coupling element cooperate with recesses 37 made on the mixer 26 and set the mixer 26 in rotation in the event of an engagement.

Das Kupplungselement 68 enthält eine Ringnut 71, in die der Abgebogene und gabelförmig gestaltete Schenkel 72 eines als Winkelstück ausgebildeten Schiebeglieds 73 eingreift. Das Schiebeglied 73 ist, wie insbesondere auch die Figuren 3 und 4 zeigen, in seinem rückwärtigen Endbereich mit einem Lagerbock 74 in Form von zwei einander im Abstand gegenüberliegenden und je eine Durchgangsbohrung 75, 75′ aufweisenden lappenförmigen Ansätzen 76, 76′ versehen. Diese Ansätze können dabei aus einem Werkstück durch Hochbiegen gewonnen sein. Im Längsschenkel 72′ des Winkelstücks ist ein Langloch 88 angebracht, durch das eine Begrenzungsschraube 89 (siehe Figuren 1 und 2) hindurchgreift, die in das Teil 77 des Getriebegehäuses 1 einschraubbar ist und ein Ausweichen des Schiebeglieds nach oben verhindert. Mit dem Schiebeglied 73 ist eine Schubstange 78 gekoppelt. Zu diesem Zweck ist die Schubstange 78, wie insbesondere aus den Figuren 5 und 6 ersichtlich ist, mit einer Längsausnehmung 79 versehen, durch die ein in seiner Lage durch die Durchgangsbohrungen 75 und 75′ im Lagerbock 74 definierter Führungsbolzen 80 hindurchgreift. An seinem rückwärtigen Ende weist die Schubstange 78 einen mit einer durchgehenden Querbohrung 81 versehenen Ansatz 82 auf, der in eine Ausnehmung 83 im Deckel 32 eingreift und mittels eines die Bohrung 81 durchsetzenden zylindrischen Bolzens 84, der in Lagerbohrungen 85, 85′ in der Deckelwandung 32′ sitzt, drehbar gelagert ist. Der Bolzen 84 ist dabei gegen Axialverschiebung gesichert. Die Schwenkachse 86 des Deckels 32 befindet sich in einem Ausleger 87 des Getriebegehäuses 1.The coupling element 68 contains an annular groove 71 into which the bent and fork-shaped leg 72 of a sliding member 73 designed as an angle piece engages. 3 and 4, the sliding member 73 is provided in its rear end region with a bearing block 74 in the form of two spaced-apart tabs 76, 76 ', each having a through hole 75, 75'. These approaches can be obtained from a workpiece by bending up. In the longitudinal leg 72 'of the elbow, an elongated hole 88 is made through which a limiting screw 89 (see Figures 1 and 2) engages, which can be screwed into the part 77 of the gear housing 1 and prevents the sliding member from escaping upwards. A push rod 78 is coupled to the sliding member 73. For this purpose, the push rod 78, as can be seen in particular from FIGS. 5 and 6, is provided with a longitudinal recess 79 through which a guide pin 80, defined in its position by the through bores 75 and 75 'in the bearing block 74, engages. At its rear end, the push rod 78 has an extension 82 provided with a continuous transverse bore 81, which engages in a recess 83 in the cover 32 and by means of a cylindrical bolt 84 passing through the bore 81, which in bearing bores 85, 85 'in the cover wall 32 'Sits, is rotatably mounted. The bolt 84 is secured against axial displacement. The pivot axis 86 of the cover 32 is located in a bracket 87 of the gear housing 1.

Wie Figur 2 erkennen läßt, sind die von den hier gestrichtelt dargestellten Kartuschen 20, 21 zum Mischer 26 führenden Zuleitungen 24 und 25 kartuschenseitig mit Kupplungsteilen 90 versehen, die lösbar mit den Zuleitungen 24, 25 vereinigt sind und die Austrittsstutzen der Kartuschen 20, 21 einrastend übergreifen, so, daß die Verbindung Kupplungsteil _ Austrittsstutzen der Kartusche ebenfalls lösbar ist. Die beiden Ausprepglieder sind mit 91 und 92 bezeichnet.As can be seen in FIG. 2, the supply lines 24 and 25 leading from the cartridges 20, 21 shown here in broken lines to the mixer 26 are provided on the cartridge side with coupling parts 90, which are detachably combined with the supply lines 24, 25 and engage the outlet connections of the cartridges 20, 21 reach over so that the connection coupling part _ outlet of the cartridge is also detachable. The two Ausprepglieder are designated 91 and 92.

Die im vorstehenden beschriebene Einrichtung arbeitet wie folgt:
Beim Hoch- bzw. Zurückschwenken des Deckels 32 um die Achse 86 wird die am Deckel 32 angelenkte Schubstange 78 nach rückwärts mitgenommen und zieht damit das Schiebeglied 73 ebenfalls nach hinten. Dessen gabelförmig gestalteter Schenkel 72 nimmt dabei das Kupplungselement 68 mit, so daß dessen Kupplungszapfen 69 außer Eingriff mit den Ausnehmungen 37 des Mischers 26 kommen. Somit können der Mischer 26 mit den beiden Zuleitungen 24 und 25 und den beiden Kartuschen 20 und 21 gegebenenfalls als zusammenhängende Einheit aus dem Elektrowerkzeug bzw. Gerät herausgenommen und durch eine neue bzw. andere Einheit ersetzt werden. Eine Ausweichbewegung des Längsschenkels 72′ des Schiebeglieds 73 nach oben wird durch die Begrenzungsschraube 89 verhindert, die mehr oder weniger weit in das Gehäuseteil 1 einschraubbar ist, so daß der Ausweichhub des Längsschenkels 72′ in Grenzen einstellbar ist.The device described above works as follows:
When the cover 32 is pivoted up or back about the axis 86, the push rod 78 articulated on the cover 32 is carried backwards and thus also pulls the sliding member 73 to the rear. Whose fork-shaped leg 72 takes the coupling element 68 with it, so that its coupling pin 69 disengage from the recesses 37 of the mixer 26. The mixer 26 with the two feed lines 24 and 25 and the two cartridges 20 and 21 can thus optionally be removed as a coherent unit from the power tool or device and replaced by a new or different unit. An evasive movement of the longitudinal leg 72 'of the sliding member 73 upwards is prevented by the limiting screw 89, which can be screwed more or less far into the housing part 1, so that the evasive stroke of the longitudinal leg 72' is adjustable within limits.

Beim Schließen des Deckels 32 wird die Vorwärtsbewegung der Schubstange 78 auf das Schiebeglied 73 und von diesem auf das Kupplungselement 68 übertragen. Dadurch kommen die Kupplungszapfen 69 unter Federspannung zur Anlage an die mit den Ausnehmungen 37 versehene Stirnfläche des Mischers 26. Beim Einschalten des Elektrowerkzeugs bzw. beim Anlauf des Wellenzapfens 66 rasten die Kupplungszapfen dann automatisch in die korrespondierenden Ausnehmungen 37 im Mischerkopf 26 ein. Bei entsprechender Lage der Kupplungszapfen 69 relativ zu den Ausnehmungen 37 im Mischerkopf 26 können die Kupplungszapfen beim Schließen des Deckels 32 auch schon vor dem Einschalten des Elektrowerkzeugs in die Eingriffsposition gelangen. In jedem Fall ist eine einfache Bedienungsweise mit optimaler Betriebssicherheit gewährleistet.When the cover 32 is closed, the forward movement of the push rod 78 is transmitted to the sliding member 73 and from there to the coupling element 68. As a result, the coupling pins 69 come under spring tension to bear against the end face of the mixer 26 provided with the recesses 37. When the power tool is switched on or when the shaft journal 66 starts up, the coupling pins then automatically snap into the corresponding recesses 37 in the mixer head 26. With the corresponding position of the coupling pins 69 relative to the recesses 37 in the mixer head 26, the coupling pins can also come into the engaged position when the cover 32 is closed before the power tool is switched on. In any case, simple operation with optimal operational safety is guaranteed.

Claims (4)

1. Manually guided motor-driven electrical tool with an equipment for the metering and mixing of at least two substances as well as for the feeding of the intermixed substances to a treatment location, wherein the equipment is equipped with receiving pockets for cartridges (20, 21), which contain the substances to be intermixed, which are each pressable out of the cartridges (20, 21) concerned with the aid of a respective extruder member (91, 92) and the extruder members (91, 92) are actuable by a drive element driven by the shaft of the driven motor, and wherein each of the substances to be intermixed gets way of a feed duct (24, 25) to a mixer (26), to the outlet of which an exit nozzle for the mixed substance is connectable and wherein the mixer (26) with the mixer head and the feed ducts (24, 25) to the cartridges (20, 21) form an exchangeable unit and the mixer (26) is driven by a toothed spindle wheel (33), which is borne to be rotatable on a spigot of the drive element actuating the extruder members and contains a hollow hub (36), by way of which the mixer (26) is settable into rotation, characterised thereby, that connected secure against rotation with the hollow hub (36) of the toothed spindle wheel (33) is a shaft spigot (66), which is provided with splines (67) and on which a coupling element (68) is arranged to be longitudinally displaceable, which displays corresponding splines (67′) and contains spring-loaded coupling spigots (69), which correspond with the recesses (37) in the mixer (26) and that the longitudinal displacement of the coupling element (68) takes place by means of a slide member (73), which on the one hand engages at the coupling element (68) and on the other hand is actuable by the cover (32) in such a manner that it interrupts the force-locking connection between the mixer (26) and the coupling element (68) on the upward pivotation of the cover (32) and automatically produces it again on the closing of the cover.
2. Manually guided motor-driven electrical tool according to claim 1, characterised thereby, that the slide member (73) is embodied by a bracket member, the bent-over limb (72) of which lies at the side of the mixer head, is constructed in fork shape and engages into an annular groove (71) of the coupling element (68), that the longitudinal limb (72′) of the bracket member displays an elongate hole (88) and is provided in the region of its rearward end with a bearing block (74) for the reception of a guide pin (80) for a push rod (78), the other end of which is borne to be rotatable at the cover (32) by means of a cylindrical pin (84) and that the push rod (78) at the side of the slide member displays a longitudinal recess (79), through which the guide pin (80) engages.
3. Manually guided motor-driven electrical tool according to the claims 1 and 2, characterised thereby, that the bearing block (74) of the bracket member is formed by two upwardly extending lug-shaped projections (76, 76′), which are provided both sides of the longitudinal limb (72′) and contain passage bores (75, 75′) for the reception of the guide pin (80) for the push rod (78), which pin is obstructed in a transverse displacement by securing rings.
4. Manually guided motor-driven electrical tool according to the claims 1 to 3, characterised thereby, that a limiting screw (89), which is led through the elongate hole (88) in the longitudinal limb (72′) of the slide member (73) and screwed into the gear housing (1), serves for limitation of an upward movement of the slide member (73).
EP88121465A 1988-07-15 1988-12-22 Portable motor-driven electrical tool Expired - Lifetime EP0352369B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3824021A DE3824021A1 (en) 1987-07-16 1988-07-15 Hand-held, motor-driven hand tool
DE3824021 1988-07-15

Publications (2)

Publication Number Publication Date
EP0352369A1 EP0352369A1 (en) 1990-01-31
EP0352369B1 true EP0352369B1 (en) 1991-04-17

Family

ID=6358746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121465A Expired - Lifetime EP0352369B1 (en) 1988-07-15 1988-12-22 Portable motor-driven electrical tool

Country Status (1)

Country Link
EP (1) EP0352369B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4067479A (en) * 1975-07-31 1978-01-10 Products Research & Chemical Corporation Two part material meter-mix dispenser apparatus
DE3316111A1 (en) * 1982-05-07 1983-11-10 Black & Decker, Inc. (eine Gesellschaft n.d.Ges.d. Staates Delaware), 19711 Newark, Del. Electrical hand tool having a controller for various functions
DE3307558C2 (en) * 1983-03-03 1986-05-28 Kerndl Verwaltungs- und Entwicklungs KG, 8184 Gmund Hand mixer for mixing at least two components that react with one another
DE8709753U1 (en) * 1987-07-16 1987-09-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hand-held, motor-driven power tool

Also Published As

Publication number Publication date
EP0352369A1 (en) 1990-01-31

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