EP0109511B1 - Floor treating apparatus - Google Patents

Floor treating apparatus Download PDF

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Publication number
EP0109511B1
EP0109511B1 EP83109518A EP83109518A EP0109511B1 EP 0109511 B1 EP0109511 B1 EP 0109511B1 EP 83109518 A EP83109518 A EP 83109518A EP 83109518 A EP83109518 A EP 83109518A EP 0109511 B1 EP0109511 B1 EP 0109511B1
Authority
EP
European Patent Office
Prior art keywords
rocker
floor
care apparatus
driving belt
rotation
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
Application number
EP83109518A
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German (de)
French (fr)
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EP0109511A1 (en
Inventor
Kurt Sternberg
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.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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Publication date
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Priority to AT83109518T priority Critical patent/ATE22220T1/en
Publication of EP0109511A1 publication Critical patent/EP0109511A1/en
Application granted granted Critical
Publication of EP0109511B1 publication Critical patent/EP0109511B1/en
Expired legal-status Critical Current

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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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0411—Driving means for the brushes or agitators driven by electric motor
    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0427—Gearing or transmission means therefor
    • A47L9/0433—Toothed gearings
    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0427—Gearing or transmission means therefor
    • A47L9/0444—Gearing or transmission means therefor for conveying motion by endless flexible members, e.g. belts
    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0494—Height adjustment of dust-loosening tools

Definitions

  • the invention relates to a floor care device according to the preamble of claim 1.
  • the object of the invention is based on the object of specifying a generic floor care device in which the structure is simplified and the production costs are reduced in such a way that an optimal constant work performance is achieved in the case of brush wear.
  • the construction of a generic floor care device is simplified, which permits cost-saving production. Nevertheless, the floor care device works with optimal, constant work performance.
  • the height of the brush body axis of rotation depends on the tension of the drive belt. E.g. the tension of the drive belt is lower, resulting from insufficient brush pressure, the rocker swivels and brings the brush body axis of rotation closer to the ground to be worked. If the brush pressure is too great, on the other hand, the tension of the drive belt increases, which also displaces the rocker arm in such a way that the axis of the brush body moves away from the carpet.
  • the swing arm-side deflection point which comes into contact with the floor-side train run, is used to control the swing arm. Different tensile stresses on this lead to a corresponding pivoting of the rocker.
  • the deflection point is designed as a tensioning roller. This design works very sensitively and brings good work results with reduced friction.
  • the rocker arm is loaded by an adjustable spring against the torque resulting from the tension of the drive belt.
  • the spring is designed as a torsion spring and engages a curved toothing of the rocker arm via a toothed wheel. This results in a favorable damping effect, particularly when the floor care device is switched on.
  • the gear drive does not adversely affect the swing arm mounting.
  • the limit switch is used to stop the motor if the drive belt is too tight - for example, caused by excessive brush pressure or a blockage.
  • the user of the floor care device thus has the option of eliminating the malfunction or setting a different brush pressure value. This measure protects the motor against overload with particularly simple means.
  • FIGS. 1-3 An exemplary embodiment of the invention is explained below with reference to FIGS. 1-3.
  • 1 shows, on an approximately natural scale, in dash-dot lines, a housing of a carpet sweeping machine which has brush bodies which are cantilevered on both sides of the drive point, the bristles not being illustrated in a brush body for the purpose of simplified illustration;
  • Fig. 2 shows a schematic representation of a longitudinal section through the brush body drive in the rest position
  • Fig. 3 is a representation corresponding to FIG. 2, namely when the carpet sweeper is in operation with the rocker moved and thus the brush body axis of rotation raised.
  • the carpet sweeper has a dash-dotted, approximately T-shaped housing 1.
  • An electric motor 2 is accommodated in the T-web, while the T-bar 3 accommodates brush bodies 4, 5 which are exposed on both sides of the drive point.
  • Bristles 6 are provided in a helical arrangement on the brush bodies 4, 5.
  • an end ring consisting of bristles 7 is located on the end of the brush bodies.
  • the brush bodies 4, 5 sit on a brush body axis of rotation 8, which carries a drive pulley 9 in the center.
  • the brush body axis of rotation 8 passes through the end of a rocker arm 10 of a rocker arm 12 rotatably mounted about a pivot pin 11 on the housing side.
  • the other swing arm 14 is equipped with curved teeth 15 which are concentric with the journal 11.
  • a stepped end 16 adjoins the curved toothing.
  • the two layers of the end are also connected to one another by a bridge 17.
  • a drive belt 19 is placed around the drive wheel 18 of the electric motor 2 and the pulley 9.
  • the pulling run 19 ′ leading from the drive wheel 18 to the pulley 9 is buckled by a tensioning roller 20 mounted on the swing arm 14.
  • the tensioning roller 20 is seated on a pin 21, which runs in a vertical slot 22 of the swing arm 14 and is fastened there at a certain height.
  • a tensioning roller 23 is also assigned to the counter-running run 19 ′′.
  • the curved toothing 15 interacts with a gear 25.
  • the latter is supported on the one hand in a bearing block 26 of the housing 1 and on the other hand in a drum 27, which in turn continues in a journal 28 mounted on the housing.
  • a torsion spring 29 engages, which in turn is fixed to the inner wall of the drum 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Floor Finish (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Soil Working Implements (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)

Abstract

The invention relates to a floor-care appliance with automatically adjusting vertical position of the brush-body rotary shaft. The shaft is placed in rotation via a drive belt from a motor, which shaft is borne by a rocker which is swingable as a function of the load on the brushes and is acted on in brush application position, and, in order to obtain a simplified construction with optimally constant work output, the rocker is swingable by the tension of the drive belt and has a deflection point which, from below, deflects the bottom-side pulling course of the drive belt.

Description

Die Erfindung betrifft ein Bodenpflegegerät gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a floor care device according to the preamble of claim 1.

Aus der DE-A-3017072 ist ein Bodenpflegegerät der vorausgesetzten Art bekannt, wobei die Verstellung der Höhenlage der Bürstenkörper-Drehachse über das Drehmoment des Antriebsmotors geschieht. Hierzu ist es erforderlich, den Antriebsmotor drehbar gelagert aufzuhängen und über einen Zapfen/Schlitzeingriff mit der Schwinge zu kuppeln, was zu einer herstellungstechnisch aufwendigen Bauform führt.From DE-A-3017072 a floor care device of the type assumed is known, the height of the brush body axis of rotation being adjusted via the torque of the drive motor. For this purpose, it is necessary to mount the drive motor in a rotatably mounted manner and to couple it to the rocker arm via a pin / slot engagement, which leads to a constructionally complex design.

Dem Gegenstand der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemässes Bodenpflegegerät anzugeben, bei welchem der Aufbau vereinfacht und die Herstellungskosten verringert sind, derart, dass bei Bürstenabnutzung eine optimale gleichbleibende Arbeitsleistung erzielt ist.The object of the invention is based on the object of specifying a generic floor care device in which the structure is simplified and the production costs are reduced in such a way that an optimal constant work performance is achieved in the case of brush wear.

Gelöst wird diese Aufgabe durch das Kennzeichen des Anspruchs 1.This problem is solved by the characterizing part of claim 1.

Infolge derartiger Ausgestaltung ist der Aufbau eines gattungsgemässen Bodenpflegegeräts vereinfacht, was eine kostensparende Herstellung zulässt. Trotzdem arbeitet das Bodenpflegegerät mit optimaler gleichbleibender Arbeitsleistung. Die Höhenlage der Bürstenkörper-Drehachse richtet sich nach der Spannung des Antriebsriemens. Wird z.B. die Spannung des Antriebsriemens geringer, resultierend aus einem zu geringen Bürstenandruck, so verschwenkt die Schwinge und bringt dadurch die Bürstenkörper-Drehachse in eine geringere Nähe zum zu bearbeitenden Boden. Bei zu grossem Bürstenandruck steigt dagegen die Spannung des Antriebsriemens, wodurch die Schwinge ebenfalls verlagert wird, derart, dass sich die Bürstenkörper-Drehachse vom Teppich entfernt. Zur Steuerung der Schwinge dient dabei die schwingenseitige Umlenkstelle, die gegen das bodenseitige Zugtrumm tritt. Unterschiedliche Zugspannungen an diesem führen zu einem entsprechenden Verschwenken der Schwinge.As a result of such an embodiment, the construction of a generic floor care device is simplified, which permits cost-saving production. Nevertheless, the floor care device works with optimal, constant work performance. The height of the brush body axis of rotation depends on the tension of the drive belt. E.g. the tension of the drive belt is lower, resulting from insufficient brush pressure, the rocker swivels and brings the brush body axis of rotation closer to the ground to be worked. If the brush pressure is too great, on the other hand, the tension of the drive belt increases, which also displaces the rocker arm in such a way that the axis of the brush body moves away from the carpet. The swing arm-side deflection point, which comes into contact with the floor-side train run, is used to control the swing arm. Different tensile stresses on this lead to a corresponding pivoting of the rocker.

Eine vorteilhafte Weiterbildung ist darin zu sehen, dass die Umlenkstelle als Spannrolle ausgebildet ist. Diese Ausgestaltung arbeitet sehr feinfühlig und bringt gute Arbeitsergebnisse bei verringerter Reibung.An advantageous development can be seen in the fact that the deflection point is designed as a tensioning roller. This design works very sensitively and brings good work results with reduced friction.

Um das Bodenpflegegerät beispielsweise unterschiedlich strukturierten Teppichen anpassen zu können, ist die Schwinge entgegen dem aus der Spannung des Antriebriemens resultierenden Drehmoment von einer einstellbaren Feder belastet.In order to be able to adapt the floor care device to carpets of different structures, for example, the rocker arm is loaded by an adjustable spring against the torque resulting from the tension of the drive belt.

Hierbei erweist es sich als günstig, dass die Feder als Drehfeder ausgebildet ist und über ein Zahnrad an einer Bogenverzahnung der Schwinge angreift. Es ergibt sich hierdurch insbesondere beim Einschalten des Bodenpflegegeräts eine günstige Dämpfungwirkung. Der Zahnradantrieb beeinträchtigt die Schwingenlagerung dabei nicht nachteilig.It proves to be favorable here that the spring is designed as a torsion spring and engages a curved toothing of the rocker arm via a toothed wheel. This results in a favorable damping effect, particularly when the floor care device is switched on. The gear drive does not adversely affect the swing arm mounting.

Um einen Schlupf des Antriebriemens beim Verschwenken der Schwinge auszuschalten, ist auch das entgegengesetzt laufende Trumm desIn order to eliminate slippage of the drive belt when pivoting the rocker arm, the opposite running trump is also the

Antriebriemens von einer Spannrolle der Schwinge belastet.Drive belt loaded by an idler pulley.

Das Einstellen der unterschiedlichen Spannung des Antriebriemens ist dadurch erleichtert, dass der einstellbaren Feder eine Anzeige-Skala zugeordnet ist.Setting the different tension of the drive belt is made easier by the fact that the adjustable spring is assigned a display scale.

Schliesslich besteht ein vorteilhaftes Merkmal noch darin, dass die Schwinge in den Endbereichen ihrer Schwenkbewegung einerseits einen Endschalter beaufschlagt und andererseits gegen Anschläge tritt.Finally, there is an advantageous feature that the rocker acts on a limit switch in the end regions of its pivoting movement and on the other hand strikes against stops.

Letztere sorgen dafür, dass die Schwinge auch in Ruhestellung ihre bestimmungsgerechte Lage nicht verlässt. Während des Arbeitens mit dem Bodenpflegegerät dient der Endschalter dazu, dass bei zu grosser Spannung des Antriebriemens - beispielsweise hervorgerufen durch einen zu grossen Bürstendruck oder eine Blockierung - der Motor stillsetzt. Der Benutzer des Bodenpflegegeräts hat damit die Möglichkeit, die Störung zu beseitigen bzw. einen anderen Bürstenandruck-Wert einzustellen. Diese Massnahme schützt den Motor mit besonders einfachen Mitteln vor Überlastung.The latter ensure that the swing arm does not leave its intended position even when it is at rest. When working with the floor care device, the limit switch is used to stop the motor if the drive belt is too tight - for example, caused by excessive brush pressure or a blockage. The user of the floor care device thus has the option of eliminating the malfunction or setting a different brush pressure value. This measure protects the motor against overload with particularly simple means.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Fig. 1-3 erläutert. Es zeigt: Fig. 1 in etwa natürlichem Massstab strichpunktiert ein Gehäuse einer Teppichkehrmaschine, welche beiderseits der Antriebsstelle fliegend ausladende Bürstenkörper aufweist, wobei bei einem Bürstenkörper zwecks vereinfachter Darstellung die Borsten nicht veranschaulicht sind;An exemplary embodiment of the invention is explained below with reference to FIGS. 1-3. 1 shows, on an approximately natural scale, in dash-dot lines, a housing of a carpet sweeping machine which has brush bodies which are cantilevered on both sides of the drive point, the bristles not being illustrated in a brush body for the purpose of simplified illustration;

Fig. 2 in schematisierter Darstellung einen Längsschnitt durch den Bürstenkörper-Antrieb in der Ruhestellung, undFig. 2 shows a schematic representation of a longitudinal section through the brush body drive in the rest position, and

Fig. 3 eine der Fig. 2 entsprechende Darstellung, und zwar bei in Betrieb befindlicher Teppichkehrmaschine bei verlagerter Schwinge und damit angehobener Bürstenkörper-Drehachse.Fig. 3 is a representation corresponding to FIG. 2, namely when the carpet sweeper is in operation with the rocker moved and thus the brush body axis of rotation raised.

Die Teppichkehrmaschine besitzt ein strichpunktiert dargestelltes, etwa T-förmig gestaltetes Gehäuse 1. In dem T-Steg ist ein Elektro-Motor 2 untergebracht, während der T-Balken 3 beiderseits der Antriebsstelle freifliegende Bürstenkörper 4, 5 aufnimmt. Auf den Bürstenkörpern 4, 5 sind in wendelförmiger Anordnung Borsten 6 vorgesehen. Ferner befindet sich endseitig an den Bürstenkörpern ein aus Borsten 7 bestehender Randkranz.The carpet sweeper has a dash-dotted, approximately T-shaped housing 1. An electric motor 2 is accommodated in the T-web, while the T-bar 3 accommodates brush bodies 4, 5 which are exposed on both sides of the drive point. Bristles 6 are provided in a helical arrangement on the brush bodies 4, 5. Furthermore, an end ring consisting of bristles 7 is located on the end of the brush bodies.

Die Bürstenkörper 4, 5 sitzen auf einer Bürstenkörper-Drehachse 8, die mittig eine Antriebsscheibe 9 trägt. Die Bürstenkörper-Drehachse 8 durchsetzt das Ende eines Schwingarmes 10 einer drehbar um einen gehäuseseitigen Achszapfen 11 gelagerten Schwinge 12. Letztere ist doppellagig ausgebildet, derart, dass der Schwingarm 10 endseitig durch einen Ringabschnitt 13 verbunden ist, welcher die Riemenscheibe 9 teilweise überfängt. Der andere Schwingenarm 14 ist mit einer konzentrisch zum Achszapfen 11 liegenden Bogenverzahnung 15 ausgestattet. An der Bogenverzahnung schliesst sich ein abgesetztes Ende 16 an. Die beiden Lagen des Endes sind ebenfalls durch eine Brücke 17 untereinander verbunden.The brush bodies 4, 5 sit on a brush body axis of rotation 8, which carries a drive pulley 9 in the center. The brush body axis of rotation 8 passes through the end of a rocker arm 10 of a rocker arm 12 rotatably mounted about a pivot pin 11 on the housing side. The other swing arm 14 is equipped with curved teeth 15 which are concentric with the journal 11. A stepped end 16 adjoins the curved toothing. The two layers of the end are also connected to one another by a bridge 17.

Um das Antriebsrad 18 des Elektro-Motors 2 und die Riemenscheibe 9 ist ein Antriebsriemen 19 gelegt. Das vom Antriebsrad 18 zur Riemenscheibe 9 führende, ziehende Trumm 19' wird von einer am Schwingenarm 14 gelagerten Spannrolle 20 eingeknickt. Die Spannrolle 20 sitzt auf einem Zapfen 21, der sich in einem Vertikalschlitz 22 des Schwingenarmes 14 führt und dort in einer bestimmten Höhenlage befestigt ist. Auch dem entgegengesetzt laufenden Trumm 19" ist eine Spannrolle 23 zugeordnet. Diese ist drehbar um einen schwingenseitigen Zapfen 24 gelagert.A drive belt 19 is placed around the drive wheel 18 of the electric motor 2 and the pulley 9. The pulling run 19 ′ leading from the drive wheel 18 to the pulley 9 is buckled by a tensioning roller 20 mounted on the swing arm 14. The tensioning roller 20 is seated on a pin 21, which runs in a vertical slot 22 of the swing arm 14 and is fastened there at a certain height. A tensioning roller 23 is also assigned to the counter-running run 19 ″.

Die Bogenverzahnung 15 wirkt zusammen mit einem Zahnrad 25. Letzteres lagert einerseits in einem Lagerbock 26 des Gehäuses 1 und andererseits in einer Trommel 27, die sich ihrerseits in einen gehäuseseitig gelagerten Zapfen 28 fortsetzt. An dem trommelseitigen Ende 25' des Zahnrades 25 greift eine Drehfeder 29 an, die ihrerseits an der Innenwandung der Trommel 27 festgelegt ist. Durch Verdrehen der Trommel 27 mittels eines auf dem Zapfen 28 angeordneten Hebels 30 kann ein Drehmoment in Pfeilrichtung x auf das Zahnrad ausgeübt werden, was zu einer Verschwenkung der Schwinge in Pfeilrichtung y führt. Dadurch wird die Spannrolle 20 mit einer bestimmten Kraft gegen das Trumm 19' des Antriebsriemens 19 gedrückt. Ein Anschlag 31, gegen welchen das Ende 16 des Schwingarms 14 tritt, begrenzt diese Bewegung. In Gegenüberlage zum Anschlag 31 kann sich ein weiterer, nicht dargestellter Anschlag erstrecken. Dort befindet sich auch ein Endschalter 32, dessen Taststift 33 einen gewissen Abstand vom Schwingen-Ende 16 besitzt.The curved toothing 15 interacts with a gear 25. The latter is supported on the one hand in a bearing block 26 of the housing 1 and on the other hand in a drum 27, which in turn continues in a journal 28 mounted on the housing. At the drum-side end 25 'of the gear 25, a torsion spring 29 engages, which in turn is fixed to the inner wall of the drum 27. By rotating the drum 27 by means of a lever 30 arranged on the pin 28, a torque can be exerted on the gearwheel in the direction of the arrow x, which leads to a pivoting of the rocker in the direction of the arrow y. As a result, the tensioning roller 20 is pressed with a certain force against the run 19 ′ of the drive belt 19. A stop 31, against which the end 16 of the swing arm 14 occurs, limits this movement. In opposition to the stop 31, a further stop, not shown, can extend. There is also a limit switch 32, the stylus 33 of which is at a certain distance from the rocker end 16.

Es ergibt sich folgende Wirkungsweise: Nach Einschalten der Teppichkehrmaschine läuft das Antriebsrad 18 entgegen Uhrzeigersinn um. Über den Antriebsriemen 19 erfahren die Bürstenkörper die gleiche Drehrichtung. Das zwischen Elektro-Motor 2 und Bürstenkörper befindliche eingeknickte Trumm 19' wird auf Zug belastet und hat damit das Bestreben, in die Strecklage zu gelangen. Dabei wird auf die Spannrolle 20 ein Druck ausgeübt, was zu einem Verschwenken der Schwinge 12 in die Lage gemäss Fig. 3 führt. Einhergehend vergrössert sich der Abstand zwischen der Bürstenkörper-Drehachse 8 und der Oberfläche eines Teppichs 34. Vor dem Einschalten der Teppichkehrmaschine oder während des Arbeitens kann über den Hebel 30 eine Verstellung des Borstenandrucks vorgenommen werden. Eine Anzeige-Skala 35 erleichtert das Einstellen des gewünschten Borstenandrucks. Übersteigt der Borstenandruck den vorgegebenen Wert, so führt dies dazu, dass das Trumm 19' stärker gespannt wird, was über die Spannrolle 20 zu einem Verschwenken der Schwinge 12 im Uhrzeigersinn führt. Die Bürstenkörper-Drehachse 8 erhält dadurch einen grösseren Abstand zum Teppich 34. Eine Verringerung der Zugspannung des Trumms 19', beispielsweise hervorgerufen durch Verschleiss der Borsten, führt dagegen zu einem Verschwenken der Schwinge entgegen Uhrzeigerrichtung. Die Borsten drücken dann kräftiger gegen den Teppich 34 unter gleichzeitiger Erhöhung der Zugspannung auf den vorgegebenen Wert.This results in the following mode of operation: After the carpet sweeper is switched on, the drive wheel 18 rotates counterclockwise. The brush bodies experience the same direction of rotation via the drive belt 19. The kinked strand 19 'located between the electric motor 2 and the brush body is subjected to tension and thus strives to get into the stretched position. A pressure is exerted on the tensioning roller 20, which leads to a pivoting of the rocker 12 into the position according to FIG. 3. At the same time, the distance between the brush body axis of rotation 8 and the surface of a carpet 34 increases. Before the carpet sweeper is switched on or while working, the bristle pressure can be adjusted via the lever 30. A display scale 35 facilitates the setting of the desired bristle pressure. If the bristle pressure exceeds the predetermined value, this leads to the strand 19 ′ being tensioned more, which leads to a pivoting of the rocker 12 in the clockwise direction via the tensioning roller 20. The brush body axis of rotation 8 is thus at a greater distance from the carpet 34. A reduction in the tension of the run 19 ′, for example caused by wear of the bristles, on the other hand leads to a pivoting of the rocker counterclockwise. The bristles then press harder against the carpet 34 while increasing the tensile stress to the predetermined value.

Blockieren beispielswewise die Bürstenkörper 4, 5, steigt die Spannung des ziehenden Trumms 19' an, die Schwinge verschwenkt und beaufschlagt dann mit ihrem Schwingenarm 14 den Endschalter 32, welcher die Drehbewegung des Elektro-Motors 2 stillsetzt.If, for example, the brush bodies 4, 5 block, the tension of the pulling strand 19 ′ increases, the rocker swings and then acts with its rocker arm 14 on the limit switch 32, which stops the rotary movement of the electric motor 2.

Beim Einschalten der Teppichkehrmaschine wird die plötzlich auftretende grössere Spannung am ziehenden Trumm 19' über den Zahnradantrieb von der Drehfeder 29 aufgefangen. Es tritt eine Dämpfung ein, und dann wird über die Drehfeder vom Zahnradantrieb die Schwinge in die vorgegebene Stellung zurückgeführt.When the carpet sweeper is switched on, the suddenly occurring greater tension on the pulling strand 19 ′ is absorbed by the torsion spring 29 via the gear drive. Damping occurs and the swing arm is then returned to the specified position by the gear drive via the torsion spring.

Claims (7)

1. A floor-care apparatus having self-adjustment of the level of the axis of rotation (8) of the brush body, which may be set in rotation by a motor (2) via a driving belt (19) and which is carried by a rocker (12) which is able to swivel in dependence upon the brush loading and is loaded into the position of contact pressure of the brushes, characterized in that the rocker (12) which is able to swivel through the tension in the driving belt (19) and which is coupled to the motor (2) only via the driving belt (19), carries on the rocker arm (14) lying opposite from the axis of rotation (8) of the brush body a point of deflection (20) which from below bends in the tight side (19') of the driving belt (19) running next the floor from the axis of rotation (8) of the brush body to the motor (2).
2. A floor-care apparatus as in claim 1, characterized in that the point of deflection (20) is made as a tension roller.
3. A floor-care apparatus as in claim 1, characterized in that the rocker (12) is loaded by an adjustable spring (29) against the torque resulting from the tension in the driving belt (19).
4. A floor-care apparatus as in claim 3, characterized in that the spring (29) is made as a torsion spring and engages via a gearwheel (25) in a toothed sector (15) on the rocker (12).
5. A floor-care apparatus as in claim 1, characterized in that the side (19") of the driving belt (19) running in the opposite direction is also loaded by a tension roller (23) on the rocker (12).
6. A floor-care apparatus as in claim 3, characterized in that an indicating scale (35) is associated with the adjustable spring (29).
7. A floor-care apparatus as in claim 1, characterized in that the rocker (12) in the end regions of its rocking motion acts on one side against a limit- switch (32) and on the other side against stops (31).
EP83109518A 1982-10-23 1983-09-24 Floor treating apparatus Expired EP0109511B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83109518T ATE22220T1 (en) 1982-10-23 1983-09-24 FLOOR CARE DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3239347A DE3239347C2 (en) 1982-10-23 1982-10-23 Floor care device
DE3239347 1982-10-23

Publications (2)

Publication Number Publication Date
EP0109511A1 EP0109511A1 (en) 1984-05-30
EP0109511B1 true EP0109511B1 (en) 1986-09-17

Family

ID=6176477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109518A Expired EP0109511B1 (en) 1982-10-23 1983-09-24 Floor treating apparatus

Country Status (7)

Country Link
US (1) US4531249A (en)
EP (1) EP0109511B1 (en)
JP (1) JPS5995027A (en)
AT (1) ATE22220T1 (en)
AU (1) AU1993883A (en)
DE (2) DE3239347C2 (en)
ES (1) ES526573A0 (en)

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SE509317C2 (en) * 1996-04-25 1999-01-11 Electrolux Ab Nozzle arrangement for a self-propelled vacuum cleaner
US6286169B1 (en) * 1997-01-27 2001-09-11 Tennant Company Tessellated cylindrical brush
GB9822001D0 (en) * 1998-10-08 1998-12-02 Notetry Ltd A cleaner head assembly for a vacuum cleaner
US20090029631A1 (en) * 2005-09-23 2009-01-29 General Electric Mitigation of stress corrosion and fatigue by surface conditioning
DE102014016472B3 (en) * 2014-05-06 2015-08-20 Stein & Co. Gmbh Land maintenance equipment
CN105395135B (en) * 2015-12-10 2017-11-14 江苏美的清洁电器股份有限公司 Vertical type dust collector
CN105816099A (en) * 2016-03-01 2016-08-03 江苏美的清洁电器股份有限公司 Dust collector
GB2569313B (en) 2017-12-12 2020-10-28 Dyson Technology Ltd A cleaner head for a vacuum cleaner
GB2571552B (en) 2018-03-01 2020-09-16 Dyson Technology Ltd A cleaner head for a vacuum cleaner
GB2584446B (en) * 2019-06-03 2021-09-22 Dyson Technology Ltd A cleaner head for a vacuum cleaner

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US2850758A (en) * 1955-04-06 1958-09-09 Hoover Co Litter lifting cleaning tool
US3639941A (en) * 1970-06-16 1972-02-08 Sunbeam Corp Vacuum cleaner
DE2153058A1 (en) * 1971-10-25 1973-05-03 Siemens Elektrogeraete Gmbh SUCTION CLEANER
JPS5414464U (en) * 1977-07-01 1979-01-30
DE2817197A1 (en) * 1978-04-20 1979-10-31 Vorwerk Co Interholding FLOOR CARE UNIT
JPS5632628A (en) * 1979-08-27 1981-04-02 Kawaguchiko Seimitsu Kk Pushhbutton device for watch
DE2946732A1 (en) * 1979-11-20 1981-05-27 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal Soil cultivation equipment
DE3017072A1 (en) * 1980-05-03 1981-11-05 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal DRIVE DEVICE FOR FLOOR CARE DEVICE
DE3029285C2 (en) * 1980-08-01 1983-02-17 Siemens AG, 1000 Berlin und 8000 München Vacuum cleaner mouthpiece with a roller brush

Also Published As

Publication number Publication date
EP0109511A1 (en) 1984-05-30
ES8405607A1 (en) 1984-07-01
DE3239347A1 (en) 1984-04-26
DE3239347C2 (en) 1985-04-18
JPS5995027A (en) 1984-05-31
US4531249A (en) 1985-07-30
DE3366311D1 (en) 1986-10-23
ES526573A0 (en) 1984-07-01
AU1993883A (en) 1984-05-03
ATE22220T1 (en) 1986-10-15

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