EP0303014B1 - Switching device for an electric driven floor cleaning machine - Google Patents

Switching device for an electric driven floor cleaning machine Download PDF

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Publication number
EP0303014B1
EP0303014B1 EP19880109161 EP88109161A EP0303014B1 EP 0303014 B1 EP0303014 B1 EP 0303014B1 EP 19880109161 EP19880109161 EP 19880109161 EP 88109161 A EP88109161 A EP 88109161A EP 0303014 B1 EP0303014 B1 EP 0303014B1
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EP
European Patent Office
Prior art keywords
switching
counterweight
lever
pivot
switch
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EP19880109161
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German (de)
French (fr)
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EP0303014A1 (en
Inventor
Jürgen Jonischus
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Fedag
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Fedag
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    • 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
    • A47L11/4002—Installations of electric equipment
    • A47L11/4008—Arrangements of switches, indicators or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/02—Switches operated by change of position, inclination or orientation of the switch itself in relation to gravitational field
    • H01H35/027—Switches operated by change of position, inclination or orientation of the switch itself in relation to gravitational field the inertia mass activating the switch mechanically, e.g. through a lever

Definitions

  • the invention relates to a device for switching an electrically driven floor cleaning machine according to the preamble of claim 1.
  • Machines which are equipped with mechanically driven, rotating brushes and which are moved by the person working with the machine on a guide handle over the floor surface to be cleaned are preferably used for cleaning floor coverings.
  • the guide shaft is preferably articulated on the floor cleaning machine and is pivoted from the non-use position into the use position and back.
  • the guide shaft is provided with a switching device for the electric motor drive.
  • the electrical power cord is wound up on a holder on the handle when not in use.
  • the dust collection container with the suction fan unit or a container to be filled with washing liquid is generally attached to the guide shaft.
  • the guide handle In the non-use position, the guide handle is in the vertical or a few degrees beyond the vertical raised and locked in this position against accidental tipping.
  • the guide handle is pivoted from the vertical to the use position by approx. 45 °, for which purpose the locking of the non-use position is usually released using a pedal.
  • the machine is usually switched on via a manually operated switch, which is often designed such that the lever actuating the electrical switch must be held in its switched-on position by hand while working with the machine, simultaneously with the guide handle, which is very annoying and is perceived as disturbing.
  • Machines are also known in which the electrical switch for the drive motor is switched on when the guide shaft is pivoted into its use position and the motor is switched off again when the guide shaft is pivoted up into the non-use position.
  • This automatic switching on and off of the machine by pivoting the guide handle has the disadvantage that the machine starts when the guide handle is moved only a few degrees from its non-use position towards the use position, which often gets the machine out of control. It is entirely possible to set the switching time for switching on the machine in such a way that the guide handle is almost in the position of use when the machine is switched on.
  • a plunger is built into the bearing block of the guide rod with a rotatable ball guided in a groove in the guide rod bearing, which is limited so that the plunger is depressed and a pushbutton switch located below it is switched off when the guide rod moves from the working position into the upper or lower rest position pivots.
  • this design requires a main switch, which is to be switched on when the guide rod is in the vertical position, and moreover a relatively complex structural design of the bearing design of the guide rod.
  • the invention has for its object to provide a device for switching an electrically powered floor cleaning machine, in which the switching times, especially when using commercially available pressure switches are delayed so that no unintended switching operations are triggered when the guide shaft swings within its position of use.
  • a lever pivotably mounted about an axis of rotation rests on the switch contact, for example a switch rod of an electrical switch.
  • the other end of this lever is with his Distance to the axis of rotation of the lever - depending on its inclination - provide changing load weight.
  • the part of the lever provided with the load weight assumes a position inclined downward at an angle of approximately 30 °.
  • the load weight is at its extreme end and thus at the greatest distance from the axis of rotation of the lever, as a result of which the end of the lever which is in contact with the switching rod of the switch, preferably a pressure switch, exerts its greatest compressive force on the switching rod and against the latter Pressure of a spring acting on the switching rod is moved back into the pressure switch and thus opens the current circuit in the switch.
  • the switching rod of the switch preferably a pressure switch
  • the lever When the guide handle is tilted to its use position of approx. 45 °, the lever is raised from its position inclined downwards at approx. 30 ° to a position of a few angular degrees above the horizontal.
  • the load weight movably mounted on the lever moves in the direction of the axis of rotation of the lever, so that the pressure of the end of the lever abutting the switching rod of the pressure switch is reduced against the restoring force of the pressure switch and the pressure switch closes the current flow, the lever in a position of approximately 30 ° is pivoted upwards.
  • the movable load weight is designed in the form of a double roller. The two roller parts are connected to one another by a connecting bolt which rolls on a surface of the lever designed as a roller track.
  • This rolling load weight causes a certain delay due to its inertia in the movement, so that only a few degrees before reaching the respective end position - non-use position / Position of use - the handle of the switching process is initiated and is therefore delayed.
  • the range of movement of the load weight is limited by end stops.
  • the floor cleaning machine 1 is provided with a motor-driven brush 2 and is supported on rollers 6.
  • the cleaning machine is moved with forward and backward movements over the floor surface to be cleaned (Fig. 2 and 4) on the guide handle 3, which is pivotally mounted on the floor cleaning machine 1 and is pivoted about 45 ° in the use position.
  • a handle 5 is attached for easy handling.
  • the switching device 15 (FIGS. 3 and 4) is also accommodated in this receiving housing 10.
  • the electrical pressure switch 16 is fastened on the holder 17.
  • the shift lever 19 is rotatably mounted about the axis of rotation 18.
  • the switch lever 19 rests with its one end 20 on the switch contact 21 - in the exemplary embodiment designed as a switch rod - of the pressure switch 16, this switch rod being axially movable in the pressure switch 16 against the force of a spring.
  • the other end 22 of the shift lever 19 is provided with an elongated opening 23 in which a load weight 24 designed as a double roller 25, 26 is mounted in a positionally variable manner.
  • the handle 3 of the floor cleaning machine 1 is in the use position.
  • the shift lever 19 is inclined at about 30 ° upward, and the position-changing load weight 24 is in its closest position to the pivot point 18 of the shift lever 19, whereby the shift lever 19 is completely relieved of the load weight 24, so that the shift rod 21 of the pressure switch 16 loading spring moves the switching rod 21 out of the pressure switch 16, whereby the circuit is closed and the cleaning machine is switched on. Due to the force of the spring of the pressure switch 16 acting on the shift rod 21, the relieved shift lever 19 is raised further, whereby the load weight 24 rolls on until the end stop, so that the shift lever 19 remains inclined upward about 35 ° above the horizontal.
  • the surface of the bolt 27 or Surface of the runway 28 with an anti-slip coating, such as Rubber, rubber or similar, provided.
  • the switching rod 21 of the pressure switch 16 is arranged approximately perpendicular to the longitudinal axis of the guide stem 3.
  • the switching rod 21 of the pressure switch 16 is arranged approximately parallel to the longitudinal axis of the guide stem 3 or at any angle thereto.

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Description

Die Erfindung betrifft eine Vorrichtung zum Schalten einer elektrisch angetriebenen Fußbodenreinigungsmaschine nach dem Oberbegriff des Anspruches 1.The invention relates to a device for switching an electrically driven floor cleaning machine according to the preamble of claim 1.

Zum Reinigen von Fußbodenbelägen werden vorzugsweise Maschinen eingesetzt, welche mit mechanisch angetriebenen, rotierenden Bürsten ausgestattet sind und durch die mit der Maschine arbeitende Person an einem Führungsstiel über die zu reinigende Fußbodenfläche bewegt werden. Der Führungsstiel ist vorzugsweise gelenkig an der Fußbodenreinigungsmaschine gelagert und wird aus der Nichtgebrauchsstellung in die Gebrauchsstellung und zurück verschwenkt. Der Führungsstiel ist bei den bekannten Maschinen mit einer Schalteinrichtung für den elektromotorischen Antrieb versehen. In den meisten Fällen wird die elektrische Netzanschlußleitung bei Nichtgebrauch auf eine Halteeinrichtung am Führungsstiel aufgewickelt. Bei den schmutzaufnehmenden Maschinen ist am Führungsstiel im allgemeinen der Staubsammelbehälter mit dem Sauggebläse-Aggregat oder ein mit Waschflüssigkeit zu füllender Behälter angebracht. In der Nichtgebrauchsstellung ist der Führungsstiel in die Senkrechte oder einige Winkelgrade über die Senkrechte hinaus hochgestellt und in dieser Stellung gegen unbeabsichtigtes Abkippen verrastet. Zum Gebrauch der Maschine wird der Führungsstiel aus der Senkrechten in die Gebrauchsstellung um ca. 45° geschwenkt, wozu meist über ein Pedal die Verrastung der Nichtgebrauchsstellung gelöst wird.Machines which are equipped with mechanically driven, rotating brushes and which are moved by the person working with the machine on a guide handle over the floor surface to be cleaned are preferably used for cleaning floor coverings. The guide shaft is preferably articulated on the floor cleaning machine and is pivoted from the non-use position into the use position and back. In the known machines, the guide shaft is provided with a switching device for the electric motor drive. In most cases, the electrical power cord is wound up on a holder on the handle when not in use. In the case of the dirt-absorbing machines, the dust collection container with the suction fan unit or a container to be filled with washing liquid is generally attached to the guide shaft. In the non-use position, the guide handle is in the vertical or a few degrees beyond the vertical raised and locked in this position against accidental tipping. To use the machine, the guide handle is pivoted from the vertical to the use position by approx. 45 °, for which purpose the locking of the non-use position is usually released using a pedal.

Das Einschalten der Maschine erfolgt meist über einen manuell zu betätigenden Schalter, der häufig so ausgebildet ist, daß der den elektrischen Schalter betätigende Hebel während des Arbeitens mit der Maschine gleichzeitig mit dem Führungsstiel von Hand in seiner Einschaltstellung gehalten werden muß, was als sehr lästig und störend empfunden wird.The machine is usually switched on via a manually operated switch, which is often designed such that the lever actuating the electrical switch must be held in its switched-on position by hand while working with the machine, simultaneously with the guide handle, which is very annoying and is perceived as disturbing.

Es sind auch Maschinen bekannt, bei welchen mit dem Verschwenken des Führungsstieles in seine Gebrauchsstellung der elektrische Schalter für den Antriebsmotor eingeschaltet und beim Hochschwenken des Führungsstieles in die Nichtgebrauchsstellung der Motor wieder ausgeschaltet wird. Dieses selbsttätige Ein- und Ausschalten der Maschine durch das Verschwenken des Führungsstieles hat jedoch den Nachteil, daß die Maschine bereits anläuft, wenn der Führungsstiel nur wenige Winkelgrade aus seiner Nichtgebrauchsstellung in Richtung Gebrauchsstellung bewegt wird, wodurch häufig die Maschine außer Kontrolle gerät. Es ist durchaus möglich, den Schaltzeitpunkt für das Einschalten der Maschine so zu legen, daß sich beim Einschaltvorgang der Führungsstiel annähernd in der Gebrauchsstellung befindet. Dies hat - bedingt durch die kurzen Schaltwege der handelsüblichen Druckschalter - den Nachteil, daß durch die pendelnde Schwenkbewegung des Führungsstieles, die sich beim Vorwärts- und Zurückführen der Maschine beim Arbeiten ergibt, die Maschine ab- und wieder eingeschaltet wird. Dieser Vorgang wird durch unterschiedliche Körpergrößen der mit der Maschine arbeitenden Personen häufig noch unterstützt. Bei einer anderen aus der DE-U-7505621 bekannten Ausführung einer Fußbodenreinigungsmaschine ist eine Sicherheitsschalteinrichtung vorgesehen, welche die Maschine bei gedrücktem Schalthebel nur dann einschaltet, wenn die beweglich gelagerte Führungsstange in Arbeitsstellung gebracht ist. Hierzu ist ein Stößel in dem Lagerbock der Führungsstange eingebaut mit drehbarer, in einer Rille des Führungsstangenlagers geführten Kugel, die so begrenzt ist, daß der Stößel niedergedrückt und ein darunter im Schaltraum angeordneter Tastschalter ausgeschaltet wird, wenn die Führungsstange aus der Arbeitslage in die obere oder untere Ruhestellung schwenkt. Diese Ausführung erfordert jedoch einen Hauptschalter, der bei Senkrechtstellung der Führungsstange einzuschalten ist, und darüber hinaus eine verhältnismäßig aufwendige konstruktive Ausbildung der Lagerausführung der Führungsstange.Machines are also known in which the electrical switch for the drive motor is switched on when the guide shaft is pivoted into its use position and the motor is switched off again when the guide shaft is pivoted up into the non-use position. This automatic switching on and off of the machine by pivoting the guide handle has the disadvantage that the machine starts when the guide handle is moved only a few degrees from its non-use position towards the use position, which often gets the machine out of control. It is entirely possible to set the switching time for switching on the machine in such a way that the guide handle is almost in the position of use when the machine is switched on. This has - due to the short switching distances of the commercially available pressure switches - the disadvantage that the machine is switched off and on again due to the oscillating pivoting movement of the guide shaft, which results when the machine is moved forwards and backwards while working. This process is often supported by different body sizes of the people working with the machine. In another embodiment of a floor cleaning machine known from DE-U-7505621, a safety switching device is provided which only switches the machine on when the shift lever is pressed when the movably mounted guide rod is brought into the working position. For this purpose, a plunger is built into the bearing block of the guide rod with a rotatable ball guided in a groove in the guide rod bearing, which is limited so that the plunger is depressed and a pushbutton switch located below it is switched off when the guide rod moves from the working position into the upper or lower rest position pivots. However, this design requires a main switch, which is to be switched on when the guide rod is in the vertical position, and moreover a relatively complex structural design of the bearing design of the guide rod.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Schalten einer elektrisch angetriebenen Fußbodenreinigungsmaschine zu schaffen, bei der die Schaltzeitpunkte, insbesondere bei Verwendung handelsüblicher Druckschalter so verzögert werden, daß beim pendelnden Verschwenken des Führungsstieles innerhalb seiner Gebrauchsstellung keine unbeabsichtigten Schaltvorgänge ausgelöst werden.The invention has for its object to provide a device for switching an electrically powered floor cleaning machine, in which the switching times, especially when using commercially available pressure switches are delayed so that no unintended switching operations are triggered when the guide shaft swings within its position of use.

Diese Aufgabe wird bei der erfindungsgemäßen Vorrichtung mit den Merkmalen des Anspruches 1 gelöst.This object is achieved in the device according to the invention with the features of claim 1.

Danach ist vorgesehen, daß am Schaltkontakt beispielsweise einer Schaltstange eines elektrischen Schalters das eine Ende eines um eine Drehachse schwenkbar gelagerten Hebels anliegt. Das andere Ende dieses Hebels ist mit einem seinen Abstand zur Drehachse des Hebels - je nach dessen Schräglage - verändernden Belastungsgewicht versehen. In der Nichtgebrauchsstellung des Führungsstieles in annähernd senkrechter Lage nimmt das mit dem Belastungsgewicht versehene Teil des Hebels eine unter einem Winkel von ca. 30° nach unten geneigte Lage ein. In dieser Stellung des Hebels befindet sich das Belastungsgewicht an dessen äußerstem Ende und damit in größter Entfernung zur Drehachse des Hebels, wodurch das an der Schaltstange des Schalters, vorzugsweise eines Druckschalters, anliegende Ende des Hebels seine größte Druckkraft auf die Schaltstange ausübt und diese gegen den Druck einer auf die Schaltstange einwirkenden Feder in den Druckschalter zurückbewegt und damit den Stromlauf im Schalter öffnet.Thereafter, it is provided that one end of a lever pivotably mounted about an axis of rotation rests on the switch contact, for example a switch rod of an electrical switch. The other end of this lever is with his Distance to the axis of rotation of the lever - depending on its inclination - provide changing load weight. In the non-use position of the guide handle in an approximately vertical position, the part of the lever provided with the load weight assumes a position inclined downward at an angle of approximately 30 °. In this position of the lever, the load weight is at its extreme end and thus at the greatest distance from the axis of rotation of the lever, as a result of which the end of the lever which is in contact with the switching rod of the switch, preferably a pressure switch, exerts its greatest compressive force on the switching rod and against the latter Pressure of a spring acting on the switching rod is moved back into the pressure switch and thus opens the current circuit in the switch.

Beim Neigen des Führungsstieles in seine Gebrauchsstellung von ca. 45° wird der Hebel aus seiner unter ca. 30° nach unten geneigten Lage in eine Stellung von wenigen Winkelgraden über die Waagerechte angehoben. Damit bewegt sich das beweglich am Hebel gelagerte Belastungsgewicht in Richtung auf die Drehachse des Hebels zu, so daß der Druck des an der Schaltstange des Druckschalters anliegenden Endes des Hebels gegen die Rückstellkraft des Druckschalters verringert wird und der Druckschalter den Stromlauf schließt, wobei der Hebel in eine Lage von ca. 30° nach oben geschwenkt wird. Das bewegliche Belastungsgewicht ist in Form einer Doppelrolle ausgebildet. Die beiden Rollenteile sind durch einen Verbindungsbolzen miteinander verbunden, der auf einer als Rollbahn ausgebildeten Fläche des Hebels abrollt. Dieses rollende Belastungsgewicht verursacht durch seine Massenträgheit im Bewegungsablauf eine gewisse Verzögerung, so daß erst wenige Winkelgrade vor Erreichen der jeweiligen Endlage - Nichtgebrauchsstellung / Gebrauchsstellung - des Führungsstieles der Schaltvorgang eingeleitet wird und dadurch verzögert abläuft. Der Bewegungsbereich des Belastungsgewichts ist durch Endanschläge begrenzt.When the guide handle is tilted to its use position of approx. 45 °, the lever is raised from its position inclined downwards at approx. 30 ° to a position of a few angular degrees above the horizontal. Thus, the load weight movably mounted on the lever moves in the direction of the axis of rotation of the lever, so that the pressure of the end of the lever abutting the switching rod of the pressure switch is reduced against the restoring force of the pressure switch and the pressure switch closes the current flow, the lever in a position of approximately 30 ° is pivoted upwards. The movable load weight is designed in the form of a double roller. The two roller parts are connected to one another by a connecting bolt which rolls on a surface of the lever designed as a roller track. This rolling load weight causes a certain delay due to its inertia in the movement, so that only a few degrees before reaching the respective end position - non-use position / Position of use - the handle of the switching process is initiated and is therefore delayed. The range of movement of the load weight is limited by end stops.

Die Erfindung wird nachstehend anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher beschrieben. Es zeigen:

Fig. 1
die Fußbodenreinigungsmaschine mit dem in Nichtgebrauchsstellung hochgestellten Führungsstiel,
Fig. 2
die Fußbodenreinigungsmaschine mit dem unter ca. 45° in die Gebrauchsstellung abgesenkten Führungsstiel,
Fig. 3
in einer Einzeldarstellung die am Führungsstiel angebrachte Schalteinrichtung in Nichtgebrauchsstellung bei hochgestelltem Führungsstiel,
Fig. 4
in einer Einzeldarstellung die am Führungsstiel angebrachte Schalteinrichtung in Gebrauchsstellung bei unter ca. 45° abeschwenktem Führungsstiel.
The invention is described below with reference to an embodiment shown in the drawings. Show it:
Fig. 1
the floor cleaning machine with the guide handle raised when not in use,
Fig. 2
the floor cleaning machine with the guide handle lowered at approx. 45 ° into the position of use,
Fig. 3
in a single representation the switching device attached to the guide stem in the non-use position with the guide stem raised,
Fig. 4
in a single representation the switching device attached to the guide stem in the use position with the guide stem pivoted below approx. 45 °.

Die Fußbodenreinigungsmaschine 1 ist mit einer motorisch angetriebenen Bürste 2 versehen und auf Laufrollen 6 abgestützt. Am Führungsstiel 3, der um das Gelenk 4 verschwenkbar an der Fußbodenreinigungsmaschine 1 gelagert ist und in Gebrauchsstellung um ca. 45° abgeschwenkt ist, wird die Reinigungsmaschine mit Vorwärts- und Rückwärtsbewegungen über die zu reinigende Fußbodenfläche bewegt (Fig. 2 und 4). Am oberen Ende des Führungsstieles 3 ist ein Griffteil 5 zur guten Handhabung angebracht. Am Führungsstiel 3 befindet sich das Aufnahmegehäuse 10 für den Staubsammelbehälter 7 und für das Saugaggregat 8. Außerdem ist in diesem Aufnahmegehäuse 10 auch die Schalteinrichtung 15 (Fig. 3 und 4) untergebracht. Der elektrische Druckschalter 16 ist auf der Halterung 17 befestigt. Um die Drehachse 18 ist der Schalthebel 19 drehbar gelagert. Der Schalthebel 19 liegt mit seinem einen Ende 20 an dem Schaltkontakt 21 - im Ausführungsbeispiel als Schaltstange ausgebildet - des Druckschalters 16 an, wobei diese Schaltstange gegen die Kraft einer Feder axial beweglich im Druckschalter 16 gelagert ist. Das andere Ende 22 des Schalthebels 19 ist mit einem länglichen Durchbruch 23 versehen, in welchem ein als Doppelrolle 25, 26 ausgebildetes Belastungsgewicht 24 lageveränderlich gelagert ist. In der Darstellung gem. Fig. 2 und 4 befindet sich der Führungsstiel 3 der Fußbodenreinigungsmaschine 1 in Gebrauchsstellung. Der Schalthebel 19 ist unter ca. 30° nach oben geneigt, und das lageverländerliche Belastungsgewicht 24 befindet sich in seiner nahesten Lage zum Drehpunkt 18 des Schalthebels 19, wodurch der Schalthebel 19 vom Belastungsgewicht 24 völlig entlastet ist, so daß die die Schaltstange 21 des Druckschalters 16 belastende Feder die Schaltstange 21 aus dem Druckschalter 16 herausbewegt, wodurch der Stromkreis geschlossen und die Reinigungsmaschine eingeschaltet wird. Durch die Kraft der auf die Schaltstange 21 einwirkenden Feder des Druckschalters 16 wird der entlastete Schalthebel 19 weiter angehoben, wodurch das Belastungsgewicht 24 bis zum Endanschlag weiterrollt, so daß der Schalthebel 19 ungefähr 35° über die Waagerechte nach oben geneigt bleibt.The floor cleaning machine 1 is provided with a motor-driven brush 2 and is supported on rollers 6. The cleaning machine is moved with forward and backward movements over the floor surface to be cleaned (Fig. 2 and 4) on the guide handle 3, which is pivotally mounted on the floor cleaning machine 1 and is pivoted about 45 ° in the use position. At the upper end of the handle 3, a handle 5 is attached for easy handling. Located on the handle 3 the receiving housing 10 for the dust collector 7 and for the suction unit 8. In addition, the switching device 15 (FIGS. 3 and 4) is also accommodated in this receiving housing 10. The electrical pressure switch 16 is fastened on the holder 17. The shift lever 19 is rotatably mounted about the axis of rotation 18. The switch lever 19 rests with its one end 20 on the switch contact 21 - in the exemplary embodiment designed as a switch rod - of the pressure switch 16, this switch rod being axially movable in the pressure switch 16 against the force of a spring. The other end 22 of the shift lever 19 is provided with an elongated opening 23 in which a load weight 24 designed as a double roller 25, 26 is mounted in a positionally variable manner. In the representation acc. 2 and 4, the handle 3 of the floor cleaning machine 1 is in the use position. The shift lever 19 is inclined at about 30 ° upward, and the position-changing load weight 24 is in its closest position to the pivot point 18 of the shift lever 19, whereby the shift lever 19 is completely relieved of the load weight 24, so that the shift rod 21 of the pressure switch 16 loading spring moves the switching rod 21 out of the pressure switch 16, whereby the circuit is closed and the cleaning machine is switched on. Due to the force of the spring of the pressure switch 16 acting on the shift rod 21, the relieved shift lever 19 is raised further, whereby the load weight 24 rolls on until the end stop, so that the shift lever 19 remains inclined upward about 35 ° above the horizontal.

Beim Zurückfahren des Führungsstieles 3 in seine Nichtgebrauchsstellung in die senkrechte Lage bzw. wenige Winkelgrade über die senkrechte Lage hinaus (Fig. 1 und 3) wird der Schalthebel 19 und damit der Durchbruch 23 mit der als Rollbahn 28 dienenden Fläche wenige Winkelgrade unter die Waagerechte geneigt. Dadurch rollt das lageveränderliche Belastungsgewicht 24 auf dem die beiden Rollenteile 25, 26 verbindenden Bolzen 27 auf der Rollbahn 28 von der Drehachse 18 des Schalthebels 19 weg. Dabei erhöht sich die vom Ende 20 des Schalthebels 19 auf die unter Federdruck stehende Schaltstange 21 des Druckschalters 16 ausgeübte Druckkraft. Hierdurch schwenkt der Schalthebel 19 in seine unter ca. 30° nach unten geneigte Endlage, so daß die Schaltstange 21 völlig in den Druckschalter 16 eingedrückt und der Stromlauf geöffnet wird. Die Reinigungsmaschine ist abgeschaltet. Durch die Massenträgheit des lageveränderlichen Belastungsgewichtes 24, dessen Lageänderung zur Drehachse 18 durch Abrollen des die beiden Rollen 25, 26 verbindenden Bolzens 27 auf der als Rollbahn 28 ausgebildeten Fläche des Durchbruchs 23 des Schalthebels 19 erfolgt, wird eine Verzögerung sowohl des Einschaltzeitpunktes als auch des Ausschaltzeitpunktes bei geringer Abhängigkeit von der Geschwindigkeit der Schwenkbewegung des Führungsstieles 3 von einigen Sekunden erreicht.When the guide handle 3 is moved back into its non-use position into the vertical position or a few degrees beyond the vertical position (FIGS. 1 and 3) the shift lever 19 and thus the opening 23 with the surface serving as the runway 28 are inclined a few degrees below the horizontal. As a result, the positionally variable load weight 24 rolls on the pin 27 connecting the two roller parts 25, 26 on the runway 28 away from the axis of rotation 18 of the shift lever 19. The pressure force exerted by the end 20 of the switching lever 19 on the switching rod 21 of the pressure switch 16 under spring pressure increases. As a result, the switching lever 19 pivots into its end position which is inclined downward at approximately 30 °, so that the switching rod 21 is pressed completely into the pressure switch 16 and the current flow is opened. The cleaning machine is switched off. Due to the inertia of the positionally variable load weight 24, whose change in position to the axis of rotation 18 takes place by rolling off the bolt 27 connecting the two rollers 25, 26 on the surface of the opening 23 of the shift lever 19 designed as a roller conveyor 28, there is a delay in both the switch-on time and the switch-off time with little dependence on the speed of the pivoting movement of the guide handle 3 of a few seconds.

Um die Rollbewegung des Belastungsgewichtes 24, welches mit dem die beiden Gewichtsteile 25, 26 verbindenden Bolzen 27 auf der als Rollbahn 28 ausgebildeten Fläche des Durchbruchs 23 abrollt, sicherzustellen und jede Gleitbewegung des Bolzens 27 sicher zu verhindern, ist die Oberfläche des Bolzens 27 oder die Oberfläche der Rollbahn 28 mit einem Anti-Gleitbelag, wie z.B. Gummi, Kautschuk o.ä., versehen.In order to ensure the rolling movement of the load weight 24, which rolls with the bolt 27 connecting the two weight parts 25, 26, on the surface of the opening 23 designed as a roller track 28, and to reliably prevent any sliding movement of the bolt 27, the surface of the bolt 27 or Surface of the runway 28 with an anti-slip coating, such as Rubber, rubber or similar, provided.

Beim beschriebenen Erfindungsbeispiel ist die Schaltstange 21 des Druckschalters 16 annähernd senkrecht zur Längsachse des Führungsstieles 3 angeordnet. Es ist jedoch auch möglich, die Schaltstange 21 des Druckschalters 16 annähernd parallel zur Längsachse des Führungstieles 3 oder in jedem beliebigen Winkel hierzu anzuordnen.In the described example of the invention, the switching rod 21 of the pressure switch 16 is arranged approximately perpendicular to the longitudinal axis of the guide stem 3. However, it is also possible arrange the switching rod 21 of the pressure switch 16 approximately parallel to the longitudinal axis of the guide stem 3 or at any angle thereto.

Claims (11)

  1. Switching device for an electrically driven floor cleaning machine, on which a tilting guide handle (3) is located so that the latter brings about the actuation of an operating switch (16) of the cleaning machine due to its tilting movement from an inoperative position into a position of use and back, characterised by a switching device (15) associated with the guide handle (3), with a switching lever (19) mounted on a pivot (18), which lever acts by its one end on the electrical switch (16) and is provided with a counterweight (24), which at the time of tilting of the guide handle (3) varies its distance from the pivot (18) of the switching lever so that the latter loads the switching contact (21) of the switch (16) with a different force, due to which the circuit is closed or opened.
  2. Device according to Claim 1, characterised in that the switching device (15) is located in a housing (10) for a dust-collecting container (7) and a suction device (8).
  3. Device according to Claim 1 or 2, characterised in that the electric switch is a push button (16) with a switching rod (21).
  4. Device according to one of Claims 1 to 3, characterised in that the counterweight (24) varying its distance from the pivot (18) carries out a rolling movement as it changes position.
  5. Device according to Claim 1 or 4, characterised in that the counterweight (24) varying its distance from the pivot (18) is constructed as a double roller (24) consisting of two rollers (25; 26).
  6. Device according to Claim 5, characterised in that the two rollers (25; 26) are connected to each other by a connecting bolt (27), whereof the surface is provided with an anti-slip coating.
  7. Device according to one of Claims 1 to 6, characterised in that the counterweight (24) rests in a manner such that it is able to roll on a surface serving as a track (28) and limited by end stops.
  8. Device according to Claim 7, characterised in that the track (28) is constructed as an opening (23) in the switching lever (19).
  9. Device according to Claim 5, characterised in that the individual rollers (25; 26) of the counterweight (24) are arranged at a short distance from both sides of the switching lever (19) and the outer diameter of the rollers (25;26) amounts to a multiple of the diameter of the connecting bolt (27), the track (28) in the opening (27) in the switching lever (19) being able to have an anti-slip coating.
  10. Device according to one of Claims 1 to 9, characterised in that in the inoperative position of the guide handle (3), the switching lever (19) is inclined downwards by approximately 30° and the counterweight (24) thus assumes its greatest distance from the pivot (18) and due to this the compressive force exerted on the switching rod (21) of the push button (16) acquires its highest value.
  11. Device according to one of Claims 1 to 10, characterised in that in the position of use of the guide handle (3), the switching lever (19) is inclined upwards from the horizontal by approximately 35° and the counterweight (24) thus adopts its smallest distance from the pivot (18) and consequently the compressive force exerted on the switching rod (21) of the push button (16) acquires its lowest value.
EP19880109161 1987-07-16 1988-06-09 Switching device for an electric driven floor cleaning machine Expired - Lifetime EP0303014B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3723445 1987-07-16
DE19873723445 DE3723445A1 (en) 1987-07-16 1987-07-16 SWITCHING DEVICE FOR AN ELECTRICALLY DRIVED FLOOR CLEANING MACHINE

Publications (2)

Publication Number Publication Date
EP0303014A1 EP0303014A1 (en) 1989-02-15
EP0303014B1 true EP0303014B1 (en) 1991-12-11

Family

ID=6331640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880109161 Expired - Lifetime EP0303014B1 (en) 1987-07-16 1988-06-09 Switching device for an electric driven floor cleaning machine

Country Status (2)

Country Link
EP (1) EP0303014B1 (en)
DE (1) DE3723445A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7505621U (en) * 1975-07-17 Fakir Werk Kicherer W Safety switching device on a floor cleaning machine
DE500632C (en) * 1927-04-26 1930-06-24 Inventia Patent Verwert Ges Power on and off device for electrically operated floor polishing machines
AT218198B (en) * 1958-08-08 1961-11-10 Hoover Ltd Electric motor-driven device that can be driven on freely rotating wheels, in particular floor treatment device
DD139064A3 (en) * 1977-05-10 1979-12-12 Moeller Klaus Henning SWITCHING DEVICE ON A FLOOR MACHINE

Also Published As

Publication number Publication date
DE3723445C2 (en) 1989-05-03
EP0303014A1 (en) 1989-02-15
DE3723445A1 (en) 1989-02-02

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