EP1138245B1 - Drive system for floor maintenance device - Google Patents

Drive system for floor maintenance device Download PDF

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Publication number
EP1138245B1
EP1138245B1 EP01106193A EP01106193A EP1138245B1 EP 1138245 B1 EP1138245 B1 EP 1138245B1 EP 01106193 A EP01106193 A EP 01106193A EP 01106193 A EP01106193 A EP 01106193A EP 1138245 B1 EP1138245 B1 EP 1138245B1
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EP
European Patent Office
Prior art keywords
drive
care
spring
plate
floor
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
EP01106193A
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German (de)
French (fr)
Other versions
EP1138245A2 (en
EP1138245A3 (en
Inventor
Michael Conze
Gerhard Ullrich
Matthias Dipl.-Ing. Varnhorst
Dirk Röllinghoff
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Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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Publication date
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Publication of EP1138245A2 publication Critical patent/EP1138245A2/en
Publication of EP1138245A3 publication Critical patent/EP1138245A3/en
Application granted granted Critical
Publication of EP1138245B1 publication Critical patent/EP1138245B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/10—Floor surfacing or polishing machines motor-driven
    • A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools
    • A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools
    • A47L11/283—Floor-scrubbing machines, motor-driven having rotary tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4038—Disk shaped surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools

Definitions

  • the invention relates to a drive for a floor care appliance, in particular for a Rainer, for rotating a care disc, wherein the drive has a drive shaft which drives a driving plate by means of driving cam, which driving plate acts on the abutment of the care disc via drive fingers, wherein the driving plate in the axial direction is acted upon by a spring in the direction of the care disc.
  • a drive for a floor care device of the type in question is known, for example, from DE-A1 197 28 927, in which one or both sides provided with a care cover care slices are provided. These care discs are dragged over a, driven by driving cams a drive shaft driving plate, wherein further acts a spring in the axial direction on the driving plates for leaving the same in the direction of the care discs.
  • a quiet, impact-free running of the floor care device on the floor to be cared for regardless of the choice of care on the care disc is guaranteed.
  • Load peaks are cushioned by the care disc.
  • a Torsionsfederelement is integrated, so that the backdrop or the driving plate does not stop at the end of a Vermosweges.
  • the torsional spring force is in this case so large that the drive torque of one or more care discs is collected without the damping element reaches the stop and thus ineffective.
  • Disc torque measurements gave an exemplary load of 0.3 to 1.2 of the nominal output torque of the engine-gear unit.
  • the suspension thereof was chosen such that a Torsionsvorschreib of about 0.3 to 0.6, preferably 0.4 times the drive torque is present in the idle state and the spring moment on the load stop exceeds 1 to 1.5, preferably 1.2 times the drive torque.
  • the spring is preferably inserted axially on the drive shaft or cross shaft and locked by primarily tangentially acting hook or the like on the gate or on the driving plate.
  • the driving plate is brought by rotation by about 40 to 60 °, preferably 50 ° to bias and locked on the drive shaft.
  • the same spring acts on the driving plate both in the axial direction and in the circumferential direction.
  • the spring is a coil spring.
  • the ends of the coil spring at one end are rotatably connected to the drive shaft and the other end rotatably connected to the driving plate.
  • a floor care device 1 in the form of a Rainer which has three, a device bottom 2 substantially penetrating care discs 3.
  • Each care disc 3 has a circular in plan, plate-like base support 4, at the peripheral edge of a circumferential toothing 5 is formed.
  • a hub 6 which latter extends on both sides of the base support 4 in the axial direction.
  • a care pad 7 care disk 3 each have a centrally formed Stitzausformung 8 formed. This is arranged opposite a hub end face sunk.
  • each support formation 8 has a centering or insertion recess 9 formed coaxially in front of it.
  • Both the Stauerausformung 8 and the centering 9th are formed approximately hemispherical, wherein the centering recess 9 has a relation to the radius of the Stauerausformung 8 enlarged diameter.
  • These are formed on both sides of the base support 4 in the form of radial wings. As shown, it is preferred to provide four equiangularly spaced abutments 10.
  • Each abutment 10 extends in the axial direction from the base support 4, which is thinner in the hub region than in the outer, the lining-bearing region, to the plane of the hub end face.
  • each abutment 10 is provided with supporting ribs 11 (see FIG. 3 for this).
  • the care disk provided with the reference numeral 3 in FIG. 1 is driven via a drive shaft of the floor care appliance 1.
  • the two further care discs 3 ' are driven directly by means of the circumferential toothing 5 of the main drive pulley 3.
  • a solution is also conceivable in which a care disc 3 'is actively driven, the care disc 3 is directly driven via this and the further care disc 3' indirectly via the care disc 3. It is also conceivable to form the individual care discs 3 or 3 'on the circumference without driving elements and to drive each one directly.
  • the drive shaft 12 shown in Fig. 3 is the end with a non-rotatably connected thereto support finger 13 provided.
  • the latter is hemispherical shaped at the end, wherein the vertical force is introduced from the ground care device 1 via the Stauerausformung 8 of the hub 6 in the care disc 3 on this support finger 13.
  • the supporting finger 13 which is also shown schematically in FIG. 4, has two diametrically opposite, radially projecting driving cams 14.
  • Such a trained support finger 13 serves at the same time at the not directly driven care discs 3 'for centering the same, said support fingers 13 are arranged on non-driven centering.
  • a driving plate 15 is further provided, which has a central opening 16 for the passage of the support finger 13, from which opening 16 two diametrically opposite, radially outwardly facing, in the circumferential direction by approximately 90 ° extending entrainment slots 17 go out.
  • the driving cams 14 enter the area of the driving slots 17 for the rotary driving of the driving plate 15.
  • the driving plate 15 has four drive fingers 18, arranged in an angle-uniform distribution, for carrying the care disks 3, 3 'in the region of their abutments 10.
  • the driving plate 15 is supported via a spring 19 in the form of a spiral spring on the drive shaft 12, for axial loading of the driving plate 15 in the direction of the care discs 3, 3 '.
  • the driving plate 15 is movably supported in the vertical direction on the support finger 13.
  • the ends of the spring 19 are one end rotatably connected to the drive shaft 12 and the other end rotatably connected to the driving plate 15, whereby the driving plate 15 is spring-loaded in addition to the application in the axial direction at the same time in the circumferential direction.
  • the driving plate 15 is always spring assisted in a contact position between the drive finger 18 of the driving plate 15 and abutment 10 of the nursing discs 3, 3 'urged, which is made possible by the circular segment-shaped training of the driving cam 14 of the drive shaft 12 penetrated driving slots 17 of the driving plate 15.
  • a rocking of the device 1 is counteracted on the care discs 3, which rocking arises in known from the prior art drives characterized in that the driven disc is not exactly applied to the Mitaueranschlag and thus when turning on the device a violent striking the disc is caused.
  • the impulse leads to an unwanted protrusion of the disc and subsequent multiple striking between Mitaueranschlag and disc, resulting in increased wear and premature failure of both parts.
  • load peaks are cushioned by the care discs 3, whereby a smooth running of the device 1 is guaranteed on all floors with all care discs or Vietnamese

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Transmission Devices (AREA)
  • Floor Finish (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Brushes (AREA)
  • Springs (AREA)

Abstract

The drive has a drive shaft (12) which drives an entrainment plate (15) through follower cams (14). The entrainment plate is biased axially by a spring towards the polishing disc and also by the same spring (19) in the circumferential direction for contact between the drive finger (18) and abutment (10) The spring is preferably a spiral spring whose ends are connected rotationally secured on the drive shaft at one end and on the entrainment plate at the other.

Description

Die Erfindung betrifft einen Antrieb für ein Bodenpflegegerät, insbesondere für ein Bohnergerät, zum rotierenden Antreiben einer Pflegescheibe, wobei der Antrieb eine Antriebswelle aufweist, die mittels Mitnahmenocken einen Mitnahmeteller antreibt, welcher Mitnahmeteller über Antriebsfinger auf Widerlager der Pflegescheibe einwirkt, wobei der Mitnahmeteller in axialer Richtung durch eine Feder in Richtung auf die Pflegescheibe beaufschlagt ist.The invention relates to a drive for a floor care appliance, in particular for a Rainer, for rotating a care disc, wherein the drive has a drive shaft which drives a driving plate by means of driving cam, which driving plate acts on the abutment of the care disc via drive fingers, wherein the driving plate in the axial direction is acted upon by a spring in the direction of the care disc.

Ein Antrieb für ein Bodenpflegegerät der in Rede stehenden Art ist bspw. aus der DE-A1 197 28 927 bekannt, bei welcher ein- oder beidseitig mit einem Pflegebelag versehene Pflegescheiben vorgesehen sind. Diese Pflegescheiben werden über einen, durch Mitnahmenocken einer Antriebswelle angetriebenen Mitnahmeteller mitgeschleppt, wobei weiter eine Feder in axialer Richtung auf den Mitnahmetellern zur Belassung desselben in Richtung auf die Pflegescheiben einwirkt.A drive for a floor care device of the type in question is known, for example, from DE-A1 197 28 927, in which one or both sides provided with a care cover care slices are provided. These care discs are dragged over a, driven by driving cams a drive shaft driving plate, wherein further acts a spring in the axial direction on the driving plates for leaving the same in the direction of the care discs.

Im Hinblick auf den zuvor beschriebenen Stand der Technik wird eine technische Problematik der Erfindung darin gesehen, einen Antrieb für ein Bodenpflegegerät der in Rede stehenden Art in vorteilhafter Weise weiterzubilden.In view of the above-described prior art, a technical problem of the invention is seen in an advantageous development of a drive for a floor care device of the type in question.

Gelöst ist diese Problematik zunächst und im wesentlichen durch den Gegenstand des Anspruches 1, wobei darauf abgestellt ist, dass der Mitnahmeteller auch durch eine Feder in Umfangsrichtung im Hinblick auf eine Anlage zwischen Antriebsfinger und Widerlager beaufschlagt ist. Zufolge dieser Ausgestaltung ist bei einem Anlaufen des Antriebes einem Vorspringen der Pflegescheibe und einem nachfolgenden mehrfachen Anschlagen zwischen Mitnehmer bzw. Kulisse und Pflegescheibe entgegengewirkt, da erfindungsgemäß durch die in Umfangsrichtung wirkende Feder stets der Antriebsfinger des Mitnahmetellers in Anlage zum Widerlager der Pflegescheibe gedrängt wird. Es kommt somit nicht zu einem Aufschaukeln des Pflegegerätes auf den Pflegescheiben. Durch das Vermeiden des Anfahrschlages des Antriebsfingers gegen das Widerlager der Pflegescheiben ist ein ruhiger, schlagfreier Lauf des Bodenpflegegerätes auf dem zu pflegenden Boden unabhängig von der Wahl des Pflegebelages auf der Pflegescheibe gewährleistet. Lastspitzen werden von der Pflegescheibe abgefedert. Bevorzugt wird ein Torsionsfederelement integriert, damit die Kulisse bzw. der Mitnahmeteller nicht am Ende eines Verdrehweges stehenbleibt. Hierzu ist eine begrenzte Verdrehbarkeit von bspw. um 90° des Mitnahmetellers auf der Antriebswelle vorgesehen. Bei der Auslegung der in Umfangsrichtung wirkenden Feder ist das zu übertragende Drehmoment wesentlich. Die Torsionsfederkraft ist hierbei so gross, dass das Antriebsmoment einer bzw. mehrerer Pflegescheiben aufgefangen wird, ohne das das Dämpfungselement an den Anschlag gelangt und damit wirkungslos wird. Messungen des Scheibenmomentes ergaben eine beispielhafte Last von 0,3 bis 1,2 des Nennabtriebsmoments der Motor-Getriebe-Einheit. Um aus der Feder eine entsprechende Gegenkraft zu erzielen, wurde erfindungsgemäß die Aufhängung derselben so gewählt, dass eine Torsionsvorspannung von etwa dem 0,3- bis 0,6-, bevorzugt 0,4-fachen des Antriebsmoments im Ruhezustand vorliegt und das Federmoment am Lastanschlag das 1- bis 1,5-, bevorzugt 1,2-fache des Antriebsmoments übersteigt. Um eine einfache und zuverlässige Montage zu gewährleisten, wird die Feder bevorzugt axial auf die Antriebswelle oder Kreuzwelle gesteckt und durch vornehmlich tangential wirkende Haken oder dergleichen an der Kulisse bzw. an dem Mitnahmeteller arretiert. Der Mitnahmeteller ist durch Drehung um etwa 40 bis 60°, bevorzugt 50° auf Vorspannung gebracht und auf der Antriebswelle verrastet. In einer bevorzugten Ausgestaltung des Erfindungsgegenstandes ist zur Bauteileminimierung vorgesehen, dass dieselbe Feder den Mitnahmeteller sowohl in axialer Richtung als auch in Umfangsrichtung beaufschlagt. Als besonders vorteilhaft erweist sich hierbei, dass die Feder eine Spiralfeder ist. Diesbezüglich wird weiter vorgeschlagen, dass die Enden der Spiralfeder einerends drehfest an der Antriebswelle und anderenends drehfest an dem Mitnahmeteller angebunden sind. Schließlich erweist es sich als vorteilhaft, dass vier Antriebsfinger und vier Widerlager in winkelgleichmäßiger Verteilung vorgesehen sind, so daß durch die federunterstützte Verdrehbarkeit des Mitnahmetellers auf der Kreuzwelle bzw. der Antriebswelle um etwa 90° stets eine Anlage zwischen Antriebsfinger und Widerlager der Pflegescheibe gegeben ist.This problem is solved first and foremost by the subject matter of claim 1, whereupon is turned off that the driving plate is acted upon by a spring in the circumferential direction with respect to a system between the drive finger and abutment. According to this embodiment, a projection of the care disc and a subsequent multiple attacks between driver or backdrop and care disc is counteracted at a start of the drive, since according to the invention by the spring acting in the circumferential direction of the drive finger of the driving plate is urged into abutment to the care disc. Thus, there is no rocking of the care device on the care discs. By avoiding the Anfahrschlages of the drive finger against the abutment of the maintenance slices a quiet, impact-free running of the floor care device on the floor to be cared for regardless of the choice of care on the care disc is guaranteed. Load peaks are cushioned by the care disc. Preferably, a Torsionsfederelement is integrated, so that the backdrop or the driving plate does not stop at the end of a Verdrehweges. For this purpose, a limited rotatability of, for example, provided by 90 ° of the driving plate on the drive shaft. When designing the circumferentially acting spring, the torque to be transmitted is essential. The torsional spring force is in this case so large that the drive torque of one or more care discs is collected without the damping element reaches the stop and thus ineffective. Disc torque measurements gave an exemplary load of 0.3 to 1.2 of the nominal output torque of the engine-gear unit. In order to achieve a corresponding counterforce from the spring, according to the invention, the suspension thereof was chosen such that a Torsionsvorspannung of about 0.3 to 0.6, preferably 0.4 times the drive torque is present in the idle state and the spring moment on the load stop exceeds 1 to 1.5, preferably 1.2 times the drive torque. In order to ensure a simple and reliable installation, the spring is preferably inserted axially on the drive shaft or cross shaft and locked by primarily tangentially acting hook or the like on the gate or on the driving plate. The driving plate is brought by rotation by about 40 to 60 °, preferably 50 ° to bias and locked on the drive shaft. In a preferred embodiment of the subject invention is provided for component minimization that the same spring acts on the driving plate both in the axial direction and in the circumferential direction. Particularly advantageous here proves that the spring is a coil spring. In this regard, it is further proposed that the ends of the coil spring at one end are rotatably connected to the drive shaft and the other end rotatably connected to the driving plate. Finally, it proves to be advantageous that four drive fingers and four abutments are provided in angularly uniform distribution, so that by the spring-assisted rotatability of the driving plate on the cross shaft or the drive shaft by about 90 ° always a contact between the drive finger and abutment of the care disc is given.

Nachstehend ist die Erfindung anhand der beigefügten Zeichnung, welche lediglich ein Ausführungsbeispiel darstellt, näher erläutert. Es zeigt

Fig. 1
eine Unteransicht eines erfindungsgemäßen Bodenpflegegerätes in Form eines Bohnergerätes;
Fig. 2
eine perspektivische Darstellung dreier Pflegescheiben, wobei eine Antriebs-Pflegescheibe mittels einer Umfangsverzahnung die beiden weiteren Pflegescheiben antreibt;
Fig. 3
eine perspektivische, partiell geschnittene Einzeldarstellung einer Antriebskupplung des Bodenpflegegerätes;
Fig. 4
eine schematische Darstellung in Draufsicht auf einen federbelasteten Mitnahmeteller des Antriebes.
The invention with reference to the accompanying drawings, which is merely an embodiment, explained in more detail. It shows
Fig. 1
a bottom view of a floor care device according to the invention in the form of a Rainer;
Fig. 2
a perspective view of three care discs, wherein a drive-maintenance disc drives by means of a peripheral toothing the two other care discs;
Fig. 3
a perspective, partially sectioned detail of a drive coupling of the floor care device;
Fig. 4
a schematic representation in plan view of a spring-loaded driving plate of the drive.

Dargestellt und beschrieben ist zunächst mit Bezug zu Fig. 1 ein Bodenpflegegerät 1 in Form eines Bohnergerätes, welches drei, einen Geräteboden 2 im wesentlichen durchtretende Pflegescheiben 3 aufweist.Shown and described is first with reference to FIG. 1, a floor care device 1 in the form of a Rainer, which has three, a device bottom 2 substantially penetrating care discs 3.

Jede Pflegescheibe 3 besitzt einen im Grundriss kreisförmigen, tellerartigen Grundträger 4, an dessen Randkante eine Umfangsverzahnung 5 ausgebildet ist. Mittig ist der Grundträger 4 mit einer Nabe 6 versehen, welch letztere sich beidseitig des Grundträgers 4 in Axialrichtung erstreckt.Each care disc 3 has a circular in plan, plate-like base support 4, at the peripheral edge of a circumferential toothing 5 is formed. In the center of the base support 4 is provided with a hub 6, which latter extends on both sides of the base support 4 in the axial direction.

In der Nabe 6 ist jeweils einer Seite der ein- oder beidseitig mit einem Pflegebelag 7 versehenen Pflegescheibe 3 zugeordnet eine zentral ausgebildete Stützausformung 8 gebildet. Diese ist gegenüber einer Nabenstirnfläche versenkt angeordnet.In the hub 6 is assigned to one side of the one or both sides provided with a care pad 7 care disk 3 each have a centrally formed Stützausformung 8 formed. This is arranged opposite a hub end face sunk.

In der Nabe 6 ist bezogen auf die Nabenstirnfläche vorgelagert jeder Stützausformung 8 eine Zentrier- bzw. Einführausnehmung 9 koaxial ausgeformt. Sowohl die Stützausformung 8 als auch die Zentrierausnehmung 9 sind annähernd halbkugelförmig ausgebildet, wobei die Zentrierausnehmung 9 einen gegenüber dem Radius der Stützausformung 8 vergrößerten Durchmesser besitzt.In the hub 6, with respect to the hub end face, each support formation 8 has a centering or insertion recess 9 formed coaxially in front of it. Both the Stützausformung 8 and the centering 9th are formed approximately hemispherical, wherein the centering recess 9 has a relation to the radius of the Stützausformung 8 enlarged diameter.

Weiter weist die Pflegescheibe 3 beidseitig Widerlager 10 für eine Antriebswelle des Bodenpflegegerätes 1 auf. Diese sind beidseitig des Grundträgers 4 in Form von Radialflügeln ausgebildet. Wie dargestellt, wird bevorzugt, vier in winkelgleichmäßiger Verteilung angeordnete Widerlager 10 vorzusehen.Next, the care disc 3 on both sides abutment 10 for a drive shaft of the floor care device 1. These are formed on both sides of the base support 4 in the form of radial wings. As shown, it is preferred to provide four equiangularly spaced abutments 10.

Jedes Widerlager 10 erstreckt sich in axialer Richtung vom Grundträger 4, welcher im Nabenbereich dünner ausgebildet ist als im äußeren, den Belag tragenden Bereich, bis zur Ebene der Nabenstirnfläche.Each abutment 10 extends in the axial direction from the base support 4, which is thinner in the hub region than in the outer, the lining-bearing region, to the plane of the hub end face.

Auf der, der Beaufschlagungsseite abgewandten Rückfläche ist jedes Widerlager 10 mit Stützrippen 11 versehen (vergl. hierzu Fig. 3).On the rear surface facing away from the loading side, each abutment 10 is provided with supporting ribs 11 (see FIG. 3 for this).

Die in Fig. 1 mit der Bezugsziffer 3 versehene Pflegescheibe wird über eine Antriebswelle des Bodenpflegegerätes 1 angetrieben. Die beiden weiteren Pflegescheiben 3' werden mittels der Umfangsverzahnung 5 der Hauptantriebsscheibe 3 unmittelbar angetrieben. Es ist jedoch auch eine Lösung denkbar, bei welcher eine Pflegescheibe 3' aktiv angetrieben wird, die Pflegescheibe 3 unmittelbar über diese und die weitere Pflegescheibe 3' mittelbar über die Pflegescheibe 3 angetrieben wird. Weiter ist denkbar, die einzelnen Pflegescheiben 3 bzw. 3' umfangsseitig ohne Mitnahmeelemente auszubilden und jede einzelne direkt anzutreiben.The care disk provided with the reference numeral 3 in FIG. 1 is driven via a drive shaft of the floor care appliance 1. The two further care discs 3 'are driven directly by means of the circumferential toothing 5 of the main drive pulley 3. However, a solution is also conceivable in which a care disc 3 'is actively driven, the care disc 3 is directly driven via this and the further care disc 3' indirectly via the care disc 3. It is also conceivable to form the individual care discs 3 or 3 'on the circumference without driving elements and to drive each one directly.

Die in Fig. 3 dargestellte Antriebswelle 12 ist endseitig mit einem drehfest mit diesem verbundenen Stützfinger 13 versehen. Letzterer ist endseitig halbkugelförmig ausgeformt, wobei über diesen Stützfinger 13 die Vertikalkraft aus dem Bodenpflegegerät 1 über die Stützausformung 8 der Nabe 6 in die Pflegescheibe 3 eingeleitet wird.The drive shaft 12 shown in Fig. 3 is the end with a non-rotatably connected thereto support finger 13 provided. The latter is hemispherical shaped at the end, wherein the vertical force is introduced from the ground care device 1 via the Stützausformung 8 of the hub 6 in the care disc 3 on this support finger 13.

Der auch in Fig. 4 schematisch dargestellte Stützfinger 13 weist zwei diametral gegenüberliegend angeordnete, radial abragende Mitnahmenocken 14 auf.The supporting finger 13, which is also shown schematically in FIG. 4, has two diametrically opposite, radially projecting driving cams 14.

Ein derartig ausgebildeter Stützfinger 13 dient zugleich bei den nicht direkt angetriebenen Pflegescheiben 3' zur Zentrierung derselben, wobei diese Stützfinger 13 auf nicht angetriebenen Zentrierwellen angeordnet sind.Such a trained support finger 13 serves at the same time at the not directly driven care discs 3 'for centering the same, said support fingers 13 are arranged on non-driven centering.

Zur Bildung einer wie in Fig. 3 dargestellten Antriebseinheit ist weiter ein Mitnahmeteller 15 vorgesehen, welcher eine zentrale Durchbrechung 16 zum Durchtritt des Stützfingers 13 aufweist, von welcher Durchbrechung 16 zwei diametral gegenüberliegende, radial nach außen weisende, in Umfangsrichtung um ca. 90° sich erstreckende Mitnahmeschlitze 17 ausgehen. Nach einem Zusammenfügen von Stützfinger 13 und Mitnahmeteller 15 treten die Mitnahmenocken 14 in den Bereich der Mitnahmeschlitze 17 zur Drehmitnahme des Mitnahmetellers 15 ein.To form a drive unit as shown in Fig. 3, a driving plate 15 is further provided, which has a central opening 16 for the passage of the support finger 13, from which opening 16 two diametrically opposite, radially outwardly facing, in the circumferential direction by approximately 90 ° extending entrainment slots 17 go out. After an assembly of support fingers 13 and take-up plate 15, the driving cams 14 enter the area of the driving slots 17 for the rotary driving of the driving plate 15.

Unterseitig besitzt der Mitnahmeteller 15 vier, in winkelgleichmäßiger Verteilung angeordnete Antriebsfinger 18, zur Mitnahme der Pflegescheiben 3, 3' im Bereich ihrer Widerlager 10.On the underside, the driving plate 15 has four drive fingers 18, arranged in an angle-uniform distribution, for carrying the care disks 3, 3 'in the region of their abutments 10.

Der Mitnahmeteller 15 stützt sich über eine Feder 19 in Form einer Spiralfeder an der Antriebswelle 12 ab, zur axialen Beaufschlagung des Mitnahmetellers 15 in Richtung auf die Pflegescheiben 3, 3'.The driving plate 15 is supported via a spring 19 in the form of a spiral spring on the drive shaft 12, for axial loading of the driving plate 15 in the direction of the care discs 3, 3 '.

Durch diese Ausgestaltung ist der Mitnahmeteller 15 in vertikaler Richtung beweglich an dem Stützfinger 13 gehaltert.By this configuration, the driving plate 15 is movably supported in the vertical direction on the support finger 13.

Die Enden der Feder 19 sind einerends drehfest an der Antriebswelle 12 und anderenends drehfest an dem Mitnahmeteller 15 angebunden, wodurch der Mitnahmeteller 15 neben der Beaufschlagung in axialer Richtung zugleich in Umfangsrichtung federbeaufschlagt ist.The ends of the spring 19 are one end rotatably connected to the drive shaft 12 and the other end rotatably connected to the driving plate 15, whereby the driving plate 15 is spring-loaded in addition to the application in the axial direction at the same time in the circumferential direction.

Infolge der Doppelfunktion der Feder, insbesondere der Beaufschlagung des Mitnahmetellers in Umfangsrichtung verbleibt letzterer nach einem Ausschalten des Gerätes nicht am Ende des Verdrehweges stehen. Vielmehr wird der Mitnahmeteller 15 stets federunterstützt in eine Anlagestellung zwischen Antriebsfinger 18 des Mitnahmetellers 15 und Widerlager 10 der Pflegescheiben 3, 3' gedrängt, was durch die kreisabschnittförmige Ausbildung der von den Mitnahmenocken 14 der Antriebswelle 12 durchsetzten Mitnahmeschlitze 17 des Mitnahmetellers 15 ermöglicht ist. In einfacher Weise ist hierdurch einem Aufschaukeln des Gerätes 1 auf den Pflegescheiben 3 entgegengewirkt, welches Aufschaukeln bei aus dem Stand der Technik bekannten Antrieben dadurch entsteht, dass die angetriebene Scheibe nicht genau am Mitnehmeranschlag anliegt und somit beim Einschalten des Gerätes ein heftiges Anschlagen an der Scheibe hervorgerufen wird. Der Impuls führt hierbei zu einem nicht gewünschten Vorspringen der Scheibe und nachfolgendem mehrfachen Anschlagen zwischen Mitnehmeranschlag und Scheibe, was zu einem erhöhten Verschleiß und Frühausfall beider Teile führt.As a result of the double function of the spring, in particular the loading of the driving plate in the circumferential direction, the latter does not remain at the end of the Verdrehweges after switching off the device. Rather, the driving plate 15 is always spring assisted in a contact position between the drive finger 18 of the driving plate 15 and abutment 10 of the nursing discs 3, 3 'urged, which is made possible by the circular segment-shaped training of the driving cam 14 of the drive shaft 12 penetrated driving slots 17 of the driving plate 15. In a simple way, a rocking of the device 1 is counteracted on the care discs 3, which rocking arises in known from the prior art drives characterized in that the driven disc is not exactly applied to the Mitnehmeranschlag and thus when turning on the device a violent striking the disc is caused. The impulse leads to an unwanted protrusion of the disc and subsequent multiple striking between Mitnehmeranschlag and disc, resulting in increased wear and premature failure of both parts.

Eine einfache und zuverlässige Montage ist dadurch gegeben, dass die Feder 19 axial auf die Antriebswelle 12 gesteckt und durch vornehmlich tangential wirkende Haken an dem Mitnahmeteller 15 arretiert ist. Letzterer ist durch Drehung um etwa 50° auf Vorspannung gebracht und auf der Antriebswelle 12 verrastet.A simple and reliable installation is given by the fact that the spring 19 is axially inserted onto the drive shaft 12 and locked by predominantly tangentially acting hooks on the driving plate 15. The latter is brought to bias by rotation by about 50 ° and locked on the drive shaft 12.

Zufolge der erfindungsgemäßen Ausgestaltung werden Lastspitzen von den Pflegescheiben 3 abgefedert, womit ein ruhiger Lauf des Gerätes 1 auf allen Böden mit allen Pflegescheiben bzw. Pflegescheibenbelägen gewährleistet ist.According to the embodiment of the invention load peaks are cushioned by the care discs 3, whereby a smooth running of the device 1 is guaranteed on all floors with all care discs or Pflegescheibenbelägen.

Alle offenbarten Merkmale sind (für sich) erfindungswesentlich. In die Offenbarung der Anmeldung wird hiermit auch der Offenbarungsinhalt der zugehörigen/beigefügten Prioritätsunterlagen (Abschrift der Voranmeldung) vollinhaltlich mit einbezogen, auch zu dem Zweck, Merkmale dieser Unterlagen in Ansprüche vorliegender Anmeldung mit aufzunehmen.All disclosed features are essential to the invention. The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application.

Claims (5)

  1. Drive for a floor-care appliance (1), in particular for a floor polisher, for rotating drive of a floor-care disc (3, 3'), the drive having a drive shaft (12) which drives a slaving plate (15) by means of slaving cams (14), said slaving plate (15) acting on abutments (10) of the floor-care disc (3, 3') via drive fingers, wherein the slaving plate (15) is impacted in the axial direction by a spring (19) in the direction of the floor-care disc (3, 3'), characterised in that the slaving plate (15) is also impacted by a spring (19) in the circumferential direction in respect of a contact between drive finger (18) and abutment (10).
  2. Drive according to claim 1, characterised in that the same spring (19) charges the slaving plate (15) both in the axial direction and in the circumferential direction.
  3. Drive according to one or more of the preceding claims, characterised in that the spring (19) is a flat spiral spring.
  4. Drive according to one or more of the preceding claims, characterised in that the ends of the flat spiral spring are joined at one end fixed against rotation to the drive shaft (12) and at the other end fixed against rotation to the slaving plate (15).
  5. Drive according to one or more of the preceding claims, characterised in that four drive fingers (18) and four abutments (10) are provided in equal-angled distribution.
EP01106193A 2000-04-01 2001-03-14 Drive system for floor maintenance device Expired - Lifetime EP1138245B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10016404 2000-04-01
DE10016404A DE10016404A1 (en) 2000-04-01 2000-04-01 Drive for a floor care device

Publications (3)

Publication Number Publication Date
EP1138245A2 EP1138245A2 (en) 2001-10-04
EP1138245A3 EP1138245A3 (en) 2005-02-02
EP1138245B1 true EP1138245B1 (en) 2006-09-27

Family

ID=7637356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106193A Expired - Lifetime EP1138245B1 (en) 2000-04-01 2001-03-14 Drive system for floor maintenance device

Country Status (5)

Country Link
EP (1) EP1138245B1 (en)
AT (1) ATE340529T1 (en)
DE (2) DE10016404A1 (en)
ES (1) ES2269244T3 (en)
HK (1) HK1040602A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108814461A (en) 2018-09-14 2018-11-16 云鲸智能科技（东莞）有限公司 turntable structure and robot

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR682253A (en) * 1929-09-24 1930-05-26 Improvements to parquet maintenance machines
DE640875C (en) * 1935-02-17 1937-01-14 Georg Bode Floor polisher with horizontally rotating plate brush
GB680307A (en) * 1950-06-13 1952-10-01 William Ernest Holt Improvements in machines for cleaning, polishing, or scrubbing floors
GB1115659A (en) * 1965-11-22 1968-05-29 Electrolux Ltd Coupling device for the working and the driving members of a floor polisher
US4138804A (en) * 1976-11-05 1979-02-13 Minnesota Mining And Manufacturing Company Machine head assembly and torque-transmitting device incorporated in the same
DE19728927A1 (en) * 1997-05-02 1998-11-05 Vorwerk Co Interholding Floor care equipment

Also Published As

Publication number Publication date
DE50111068D1 (en) 2006-11-09
ES2269244T3 (en) 2007-04-01
ATE340529T1 (en) 2006-10-15
HK1040602A1 (en) 2002-06-21
EP1138245A2 (en) 2001-10-04
DE10016404A1 (en) 2001-10-04
EP1138245A3 (en) 2005-02-02

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