EP2092869B1 - Nozzle for floor vacuum cleaner - Google Patents

Nozzle for floor vacuum cleaner Download PDF

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Publication number
EP2092869B1
EP2092869B1 EP09001365.7A EP09001365A EP2092869B1 EP 2092869 B1 EP2092869 B1 EP 2092869B1 EP 09001365 A EP09001365 A EP 09001365A EP 2092869 B1 EP2092869 B1 EP 2092869B1
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EP
European Patent Office
Prior art keywords
chassis
axis
suction
suction head
nozzle
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Application number
EP09001365.7A
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German (de)
French (fr)
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EP2092869A2 (en
EP2092869A3 (en
Inventor
Dieter Kaffenberger
Hans-Joachim Steudtner
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Wessel Werk GmbH
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Wessel Werk GmbH
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Publication of EP2092869A2 publication Critical patent/EP2092869A2/en
Publication of EP2092869A3 publication Critical patent/EP2092869A3/en
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Publication of EP2092869B1 publication Critical patent/EP2092869B1/en
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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
    • 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
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like

Definitions

  • the invention relates to a nozzle for vacuum cleaner.
  • the invention relates to a floor nozzle with a chassis, which has a rear chassis section with at least one roller and a front projecting in the suction direction front portion for connecting a suction head.
  • the suction head is tiltably mounted about a horizontal axis at the front portion of the chassis.
  • a SaugrohranQuery Swiss is provided, which is arranged pivotably about a horizontal hinge axis on the chassis.
  • a floor nozzle with the features described is out DE-A 28 46 847 known.
  • the hinge axis of the Saugrohran gleich Swisses coincides with the axis of the roller.
  • the chassis forms a suction channel, at the front portion of the suction head is mounted tiltably about a horizontal axis.
  • the force introduced during use of the floor nozzle via the Saugrohran gleich congress is transmitted to the roller, which receives the vertical forces.
  • the function of the floor nozzle during a backward movement of the chassis is in need of improvement. Due to the very low point of articulation of Saugrohran gleich publishedes there is a risk that the landing gear is lifted in a backward movement of the bottom surface and the suction head is inclined to the bottom surface, which adversely affects the dust intake.
  • WO 03/039315 is a floor nozzle for vacuum cleaner known which has better performance in a backward movement.
  • the nozzle also consists of a chassis that a rear chassis section having two rollers arranged on an axis and a front projecting in the suction direction front portion for connection of a suction head, and a suction head which is tiltably mounted about a horizontal axis on the front portion of the chassis.
  • the Saugrohran gleich Swiss is connected to a rocker which is pivotally mounted on the front chassis section about a horizontal axis. The hinge axis of the rocker and the axis for the movable mounting of the suction head coincide.
  • the Saugrohran gleich Swiss connected to the rocker is vertically movably guided on the rear chassis section and occupies different positions relative to the axis of the rollers during forward and backward movements of the chassis.
  • the rocker and the Saugrohran gleich Swiss go into an extended position, without the risk that the landing gear is lifted from the ground.
  • the forces occurring during the handling of the floor nozzle are introduced via the suction pipe connection piece and the rocker into the front section of the chassis. In a forward movement, this leads to a load on the suction head, which increases the pushing force. In a backward movement of the suction head of the suction head is relieved, which can adversely affect the dust pickup.
  • the force distribution in the handling of the nozzle is still in need of improvement.
  • One out EP 0 304 609 A1 known nozzle for vacuum cleaner in its basic structure comprises a suction head which is tiltably mounted about a horizontal axis on a front portion of a bottom surface guided around a support body, and a Saugrohran gleich mutual which is pivotally mounted about a horizontal hinge axis on the support body.
  • the Saugrohran gleich mutually mounted about a horizontal hinge axis on the support body.
  • the Saugrohran gleich are connected by a flexible line to Saugluft entry.
  • the joint axis of the Saugrohran gleich revealed by a compound which transmits sliding forces between the Saugrohran gleich schizophrenia and the support body, vertically movably connected to a rear portion of the support body.
  • the connection is part of a multi-linkage linkage, which forcibly pivots the suction head in reciprocating suction movements so that at least one working edge is increasingly used in a corresponding direction of movement.
  • the invention has for its object to provide a nozzle for vacuum cleaner, which always rests flat on the floor surface in forward and backward movements. Furthermore, a favorable force distribution of the introduced via the Saugrohran gleich Swiss force is aimed at both a forward movement of the floor nozzle as well as a backward movement of the floor nozzle.
  • the object of the invention and solution of this problem is a nozzle according to claim 1.
  • the hinge axle is vertically movably connected to the rear landing gear section by a link which transmits pushing forces between the suction tube fitting and the landing gear, and assumes different positions relative to the axis of the rollers during forward and rearward movements of the landing gear.
  • a connection is provided on the rear landing gear section, which transmits forces when the floor nozzle is being used by a suction pipe connected to the suction pipe connection piece to the landing gear.
  • the connection is provided near the caster axle of the chassis.
  • the compound according to the invention has a variable force introduction point. With a forward movement of the floor nozzle, the force application point is deep. In a backward movement of the floor nozzle adjusts a force introduction point, which has a greater distance from the ground. Due to the variable force introduction point, a favorable force distribution of the forces transmitted from the suction tube to the floor nozzle is achieved when handling the floor nozzle. The distribution of forces has a favorable effect on the suction properties, in particular on the dust absorption and the pushing force.
  • connection between the hinge axle and the rear chassis section is in an area which starts in the suction direction 20 mm in front of the axis of the rollers and ends 20 mm behind the axis of the rollers.
  • the connection by which the forces are transmitted from a suction pipe connected to the Saugrohran gleich Swiss on the chassis, arranged approximately in a vertical axis laid by the roller axis.
  • the force application point of the connection is mounted vertically movable and assumes at a forward movement of the floor nozzle and a backward movement of the nozzle different positions, which do not coincide with the roller axis. Due to the distance of the force introduction point of the roller axis, a lever arm, which results as a product with the force introduced through the suction pipe torque.
  • the force application points can be determined by the vertical mobility of the compound so that when forward and backward movements of the floor nozzle different torques arise, which have a favorable effect on the suction properties of the nozzle.
  • the connection between the articulated axle and the chassis is designed so that the articulation axis assumes a position below the axis of the rollers during a forward movement of the chassis and a position above the roller axle during a backward movement.
  • the connection between the joint axis of the Saugrohran gleich concernedes and the rear suspension section is structurally realized in a simple manner that the hinge axis of the Saugrohran gleich foundedes is guided vertically movable in the guide recesses.
  • the guide recesses are on the rear chassis section and a rear chassis section forming Roller carrier arranged and expediently have an upper stop and a lower stop for the hinge axis.
  • the stops are set so that, when the nozzle is in use, the hinge axis bears against the lower stop during forward movement of the chassis and against the upper stop during rearward movement of the chassis.
  • the guide recesses are perpendicular or inclined at an angle of 60 ° maximum to the vertical. In the context of the invention, it is also that they are arcuately curved.
  • the suction pipe connecting the suction pipe with the pipe for guiding the suction air is flexible in order not to hinder the force distribution achieved with the vertically movable force application point and to influence.
  • the air duct and the power transmission are preferably functionally separated.
  • a preferred embodiment of the invention provides that the flexible conduit consists of a corrugated hose or a multipart channel movably composed of segments.
  • the suction head has a sliding sole with one or more suction slots which extend across the width of the suction head.
  • the sliding sole can rest directly on the surface to be cleaned or be supported on front rollers.
  • a sliding sole with a single suction slot which extends over the entire width of the suction head and rests directly on the bottom surface when cleaning textile floor surfaces.
  • the suction head can be opened and lowered on the bottom side by sealing strips, e.g. in the form of a bristle ring, in the form of bristle strips or sealing lips.
  • the floor nozzle shown in the figures has a chassis 1, which has a rear chassis section 2 with a roller 3 or two arranged on an axis 4 rollers 3 and a projecting in the suction direction front portion 5 for connecting a suction head 6.
  • the suction head 6 is tiltably mounted about a horizontal axis 7 on the front portion 5 of the chassis.
  • a Saugrohran gleich conspiracy 8 is provided, which is arranged about a horizontal hinge axis 9 pivotally mounted on the chassis 1.
  • the hinge axis 9 of the Saugrohran gleich dealtes 8 is connected by a connection 10, which transmits sliding forces between the Saugrohran gleich institutions 8 and the chassis 1, vertically movably connected to the rear chassis section 2.
  • a flexible conduit 12 is provided between the Saugrohran gleich Swiss 8 and the suction head 6, which is for example designed as a corrugated hose or may consist of a segmentally movable composite multi-part channel.
  • connection 10 between the hinge axle 9 and the rear chassis section 2 lies in a region which starts in the suction direction 20 mm in front of the axis 4 of the rollers 3 and 20 mm behind the axis of the rollers ends.
  • the connection 10 is located substantially in a vertical plane passing through the roller axle 4.
  • the connection between the hinge axis 9 and the rear chassis section 2 transmits forces that occur in the handling of a suction pipe connected to the suction pipe 8 suction pipe 13 and in the Fig. 1 and 2 are shown as force vectors F 1 , F 2 .
  • the connection between the hinge axis 9 and the chassis 1 is formed so that the hinge axis 9 assumes a position 11 under a forward movement of the chassis 1 below the axis 4 of the rollers 3 ( Fig. 1 ) and in a backward movement, a position 11 'above the roller axis 4 is set ( Fig. 2 ).
  • a lever arm is formed which, as a product, results in a torque with the force introduced through the suction tube.
  • a torque is generated, which reduces the contact force of the suction head 6 on the bottom surface and thereby reduces the applied for the forward movement of sliding force.
  • the backward movement creates a moment which counteracts the occurring during the backward movement relief of the suction head 6 and has a positive effect on the dust pickup during the backward movement.
  • the hinge axis 9 of the Saugrohran gleich Swisses 8 To connect the hinge axis 9 of the Saugrohran gleich Swisses 8 with the rear chassis section 2 guide recesses 14 are provided in which the hinge axis 9 is guided vertically movable.
  • the guide recesses 14 are arranged on a wall surface of the rear chassis section 2.
  • the rear chassis section 2 consists of a roller carrier on which webs with the guide recesses 14 are arranged.
  • the guide recesses 14 extend vertical in the embodiment. They may also be inclined at an angle to the vertical or arcuately curved.
  • the guide recesses 14 form an upper stop and a lower stop for the hinge axis 9 of the Saugrohran gleich Swisses 8.
  • the hinge axis 9 is during forward movement of the chassis at the lower stop and during a backward movement of the chassis to the upper stop.
  • the SaugrohranInstitut Nursing 8 is formed in a conventional manner as a rotary joint. It has a curved connection end 15 and a pipe stub 16 connected to the flexible pipe 12, which is inserted in a rotatable manner into the curved pipe connection end 15.
  • the suction head 6 has a sliding sole 17 with one or more suction slots, which extend transversely to the direction of movement of the floor nozzle over the entire width of the suction head.
  • the sliding sole 17 is in the embodiment on the bottom surface. It is not excluded that the sliding sole is also supported on rollers on the bottom side. Finally, in the suction head on the bottom side retractable and sealing strips may be provided, which are extended to clean smooth floor coverings.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Description

Die Erfindung betrifft eine Düse für Bodenstaubsauger.The invention relates to a nozzle for vacuum cleaner.

Die Erfindung geht aus von einer Bodendüse mit einem Fahrwerk, das einen rückwärtigen Fahrwerksabschnitt mit mindestens einer Laufrolle und einem in Saugrichtung vorkragenden vorderen Abschnitt zum Anschluss eines Saugkopfes aufweist. Der Saugkopf ist um eine horizontale Achse kippbeweglich an dem vorderen Abschnitt des Fahrwerks gelagert. Ferner ist ein Saugrohranschlussstück vorgesehen, welches um eine horizontale Gelenkachse verschwenkbar an dem Fahrwerk angeordnet ist.The invention relates to a floor nozzle with a chassis, which has a rear chassis section with at least one roller and a front projecting in the suction direction front portion for connecting a suction head. The suction head is tiltably mounted about a horizontal axis at the front portion of the chassis. Furthermore, a Saugrohranschlussstück is provided, which is arranged pivotably about a horizontal hinge axis on the chassis.

Eine Bodendüse mit den beschriebenen Merkmalen ist aus DE-A 28 46 847 bekannt. Die Gelenkachse des Saugrohranschlussstückes fällt mit der Achse der Laufrolle zusammen. Das Fahrwerk bildet einen Saugkanal, an dessen vorderem Abschnitt der Saugkopf um eine horizontale Achse kippbeweglich gelagert ist. Die beim Gebrauch der Bodendüse über das Saugrohranschlussstück eingeleitete Kraft wird auf die Laufrolle übertragen, welche die vertikalen Kräfte aufnimmt. Bei der bekannten Anordnung ist der Saugkopf von den Vertikalkräften, die bei der Handhabung der Bodendüse über das Saugrohr und das Saugrohranschlussstück eingeleitet werden, weitgehend entlastet. Verbesserungsbedürftig ist die Funktion der Bodendüse während einer Rückwärtsbewegung des Fahrwerkes. Durch den sehr tiefen Anlenkpunkt des Saugrohranschlussstückes besteht die Gefahr, dass das Fahrwerk bei einer Rückwärtsbewegung von der Bodenfläche abgehoben wird und der Saugkopf sich zur Bodenfläche schräg stellt, was sich nachteilig auf die Staubaufnahme auswirkt.A floor nozzle with the features described is out DE-A 28 46 847 known. The hinge axis of the Saugrohranschlussstückes coincides with the axis of the roller. The chassis forms a suction channel, at the front portion of the suction head is mounted tiltably about a horizontal axis. The force introduced during use of the floor nozzle via the Saugrohranschlussstück is transmitted to the roller, which receives the vertical forces. In the known arrangement of the suction head is largely relieved of the vertical forces that are introduced in the handling of the floor nozzle via the suction pipe and the Saugrohranschlussstück. The function of the floor nozzle during a backward movement of the chassis is in need of improvement. Due to the very low point of articulation of Saugrohranschlussstückes there is a risk that the landing gear is lifted in a backward movement of the bottom surface and the suction head is inclined to the bottom surface, which adversely affects the dust intake.

Aus WO 03/039315 ist eine Bodendüse für Bodenstaubsauger bekannt, die bei einer Rückwärtsbewegung bessere Gebrauchseigenschaften aufweist. In ihrem grundsätzlichen Aufbau besteht die Düse ebenfalls aus einem Fahrwerk, das einen rückwärtigen Fahrwerkabschnitt mit zwei auf einer Achse angeordnete Laufrollen und einen in Saugrichtung vorkragenden vorderen Abschnitt zum Anschluss eines Saugkopfes aufweist, und einem Saugkopf, der um eine horizontale Achse kippbeweglich an dem vorderen Abschnitt des Fahrwerks gelagert ist. Das Saugrohranschlussstück ist an eine Schwinge angeschlossen, die am vorderen Fahrwerkabschnitt um eine horizontale Achse verschwenkbar gelagert ist. Die Gelenkachse der Schwinge und die Achse für die bewegliche Lagerung des Saugkopfes fallen zusammen. Das mit der Schwinge verbundene Saugrohranschlussstück ist am rückwärtigen Fahrwerkabschnitt vertikal beweglich geführt und nimmt bei Vorwärts- und Rückwärtsbewegungen des Fahrwerks unterschiedliche Positionen relativ zur Achse der Laufrollen ein. Bei der Rückwärtsbewegung der Bodendüse gehen die Schwinge und das Saugrohranschlussstück in eine Strecklage über, ohne dass die Gefahr besteht, dass das Fahrwerk von dem Boden abgehoben wird. Die bei der Handhabung der Bodendüse auftretenden Kräfte werden über das Saugrohranschlussstück und die Schwinge in den vorderen Abschnitt des Fahrwerkes eingeleitet. Bei einer Vorwärtsbewegung führt dies zu einer Belastung des Saugkopfes, welche die Schiebekraft erhöht. Bei einer Rückwärtsbewegung des Saugkopfes wird der Saugkopf entlastet, was sich nachteilig auf die Staubaufnahme auswirken kann. Die Kraftverteilung bei der Handhabung der Düse ist noch verbesserungsbedürftig.Out WO 03/039315 is a floor nozzle for vacuum cleaner known which has better performance in a backward movement. In its basic structure, the nozzle also consists of a chassis that a rear chassis section having two rollers arranged on an axis and a front projecting in the suction direction front portion for connection of a suction head, and a suction head which is tiltably mounted about a horizontal axis on the front portion of the chassis. The Saugrohranschlussstück is connected to a rocker which is pivotally mounted on the front chassis section about a horizontal axis. The hinge axis of the rocker and the axis for the movable mounting of the suction head coincide. The Saugrohranschlussstück connected to the rocker is vertically movably guided on the rear chassis section and occupies different positions relative to the axis of the rollers during forward and backward movements of the chassis. During the backward movement of the floor nozzle, the rocker and the Saugrohranschlussstück go into an extended position, without the risk that the landing gear is lifted from the ground. The forces occurring during the handling of the floor nozzle are introduced via the suction pipe connection piece and the rocker into the front section of the chassis. In a forward movement, this leads to a load on the suction head, which increases the pushing force. In a backward movement of the suction head of the suction head is relieved, which can adversely affect the dust pickup. The force distribution in the handling of the nozzle is still in need of improvement.

Eine aus EP 0 304 609 A1 bekannte Düse für Bodenstaubsauger umfasst in ihrem grundsätzlichen Aufbau einen Saugkopf, der um eine horizontale Achse kippbeweglich an einem vorderen Abschnitt eines über eine Bodenfläche führbaren Stützkörpers gelagert ist, sowie ein Saugrohranschlussstück, welches um eine horizontale Gelenkachse verschwenkbar an dem Stützkörper angeordnet ist. Das Saugrohranschlussstück und der Saugkopf sind durch eine flexible Leitung zur Saugluftführung verbunden. Ferner ist die Gelenkachse des Saugrohranschlussstückes durch eine Verbindung, welche Schiebekräfte zwischen dem Saugrohranschlussstück und dem Stützkörper überträgt, vertikal beweglich an einem rückwärtigen Abschnitt des Stützkörpers angeschlossen. Die Verbindung ist Teil eines mehrgliedrigen Gestänges, welches den Saugkopf bei hin- und hergehenden Saugbewegungen zwangsweise so verschwenkt, dass mindestens eine Arbeitskante bei einer entsprechenden Bewegungsrichtung verstärkt zum Einsatz kommt.One out EP 0 304 609 A1 known nozzle for vacuum cleaner in its basic structure comprises a suction head which is tiltably mounted about a horizontal axis on a front portion of a bottom surface guided around a support body, and a Saugrohranschlussstück which is pivotally mounted about a horizontal hinge axis on the support body. The Saugrohranschlussstück and the suction head are connected by a flexible line to Saugluftführung. Furthermore, the joint axis of the Saugrohranschlussstückes by a compound which transmits sliding forces between the Saugrohranschlussstück and the support body, vertically movably connected to a rear portion of the support body. The connection is part of a multi-linkage linkage, which forcibly pivots the suction head in reciprocating suction movements so that at least one working edge is increasingly used in a corresponding direction of movement.

Der Erfindung liegt die Aufgabe zugrunde, eine Düse für Bodenstaubsauger anzugeben, die bei Vorwärts- und Rückwärtsbewegungen stets flächig auf der Bodenfläche aufliegt. Ferner wird eine günstige Kraftverteilung der über das Saugrohranschlussstück eingeleiteten Kraft sowohl bei einer Vorwärtsbewegung der Bodendüse als auch bei einer Rückwärtsbewegung der Bodendüse angestrebt.The invention has for its object to provide a nozzle for vacuum cleaner, which always rests flat on the floor surface in forward and backward movements. Furthermore, a favorable force distribution of the introduced via the Saugrohranschlussstück force is aimed at both a forward movement of the floor nozzle as well as a backward movement of the floor nozzle.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Düse nach Anspruch 1.The object of the invention and solution of this problem is a nozzle according to claim 1.

Die erfindungsgemäße Düse umfasst:

  • ein Fahrwerk, das einen rückwärtigen Fahrwerksabschnitt mit mindestens einer Laufrolle und einen in Saugrichtung vorkragenden vorderen Abschnitt zum Anschluss eines Saugkopfes aufweist;
  • einem Saugkopf, der um eine horizontale Achse kippbeweglich an dem vorderen Abschnitt des Fahrwerks gelagert ist;
  • ein Saugrohranschlussstück, welches um eine horizontale Gelenkachse verschwenkbar an dem Fahrwerk angeordnet ist;
  • eine zwischen dem Saugrohranschlussstück und dem Saugkopf vorgesehene flexible Leitung zur Saugluftführung.
The nozzle according to the invention comprises:
  • a landing gear, which has a rear chassis section with at least one roller and a front projecting in the suction direction for connecting a suction head;
  • a suction head tiltably supported on the front portion of the landing gear about a horizontal axis;
  • a Saugrohranschlussstück which is arranged pivotably about a horizontal hinge axis on the chassis;
  • a provided between the Saugrohranschlussstück and the suction head flexible conduit for suction air.

Die Gelenkachse ist durch eine Verbindung, welche Schiebekräfte zwischen dem Saugrohranschlussstück und dem Fahrwerk überträgt, vertikal beweglich an dem rückwärtigen Fahrwerksabschnitt angeschlossen und nimmt bei Vorwärts- und Rückwärtsbewegungen des Fahrwerks unterschiedliche Positionen relativ zur Achse der Laufrollen ein. Bei der erfindungsgemäßen Bodendüse ist am rückwärtigen Fahrwerksabschnitt eine Verbindung vorgesehen, die beim Gebrauch der Bodendüse Kräfte von einem an das Saugrohranschlussstück angeschlossenen Saugrohr auf das Fahrwerk überträgt. Die Verbindung ist nahe der Laufrollenachse des Fahrwerks vorgesehen. Die erfindungsgemäße Verbindung hat einen variablen Krafteinleitungspunkt. Bei einer Vorwärtsbewegung der Bodendüse liegt der Krafteinleitungspunkt tief. Bei einer Rückwärtsbewegung der Bodendüse stellt sich ein Krafteinleitungspunkt ein, der einen größeren Abstand zum Boden aufweist. Durch den variablen Krafteinleitungspunkt wird bei der Handhabung der Bodendüse eine günstige Kraftverteilung der von dem Saugrohr auf die Bodendüse übertragenen Kräfte erreicht. Die Kraftverteilung wirkt sich günstig auf die Saugeigenschaften, insbesondere auf die Staubaufnahme und die Schiebekraft aus.The hinge axle is vertically movably connected to the rear landing gear section by a link which transmits pushing forces between the suction tube fitting and the landing gear, and assumes different positions relative to the axis of the rollers during forward and rearward movements of the landing gear. In the floor nozzle according to the invention, a connection is provided on the rear landing gear section, which transmits forces when the floor nozzle is being used by a suction pipe connected to the suction pipe connection piece to the landing gear. The connection is provided near the caster axle of the chassis. The compound according to the invention has a variable force introduction point. With a forward movement of the floor nozzle, the force application point is deep. In a backward movement of the floor nozzle adjusts a force introduction point, which has a greater distance from the ground. Due to the variable force introduction point, a favorable force distribution of the forces transmitted from the suction tube to the floor nozzle is achieved when handling the floor nozzle. The distribution of forces has a favorable effect on the suction properties, in particular on the dust absorption and the pushing force.

Die Verbindung zwischen der Gelenkachse und dem rückwärtigen Fahrwerksabschnitt liegt in einem Bereich, der in Saugrichtung 20 mm vor der Achse der Laufrollen beginnt und 20 mm hinter der Achse der Laufrollen endet. Vorzugsweise ist die Verbindung, durch welche die Kräfte von einem an das Saugrohranschlussstück angeschlossenen Saugrohr auf das Fahrwerk übertragen werden, etwa in einer durch die Rollenachse gelegten vertikalen Ebene angeordnet. Der Krafteinleitungspunkt der Verbindung ist jedoch vertikal beweglich gelagert und nimmt bei einer Vorwärtsbewegung der Bodendüse und bei einer Rückwärtsbewegung der Düse unterschiedliche Positionen ein, die nicht mit der Rollenachse zusammenfallen. Durch den Abstand des Krafteinleitungspunktes von der Rollenachse entsteht ein Hebelarm, der als Produkt mit der durch das Saugrohr eingeleiteten Kraft ein Drehmoment ergibt. Die Krafteinleitungspunkte können dabei durch die vertikale Beweglichkeit der Verbindung so festgelegt werden, dass bei Vorwärts- und Rückwärtsbewegungen der Bodendüse unterschiedliche Drehmomente entstehen, die sich günstig auf die Saugeigenschaften der Düse auswirken. Erfindungsgemäß ist die Verbindung zwischen der Gelenkachse und dem Fahrwerk so ausgebildet, dass die Gelenkachse bei einer Vorwärtsbewegung des Fahrwerkes eine Position unterhalb der Achse der Laufrollen und bei einer Rückwärtsbewegung eine Position oberhalb der Laufrollenachse einnimmt. Durch die Position des Krafteinleitungspunktes unterhalb der Rollenachse während einer Vorwärtsbewegung des Fahrwerkes kann ein Drehmoment erzeugt werden, welches die Auflagekraft des Saugkopfes auf der Bodenfläche reduziert und die Schiebekraft bei einer Vorwärtsbewegung mindert. Durch den höheren Krafteinleitungspunkt, der sich bei einer Rückwärtsbewegung einstellt, kann ein Moment erzeugt werden, welches der üblicherweise bei einer Rückwärtsbewegung auftretenden Entlastung des Saugkopfes entgegenwirkt und sich günstig auf die Staubaufnahme während einer Rückwärtsbewegung des Fahrwerkes auswirkt.The connection between the hinge axle and the rear chassis section is in an area which starts in the suction direction 20 mm in front of the axis of the rollers and ends 20 mm behind the axis of the rollers. Preferably, the connection, by which the forces are transmitted from a suction pipe connected to the Saugrohranschlussstück on the chassis, arranged approximately in a vertical axis laid by the roller axis. However, the force application point of the connection is mounted vertically movable and assumes at a forward movement of the floor nozzle and a backward movement of the nozzle different positions, which do not coincide with the roller axis. Due to the distance of the force introduction point of the roller axis, a lever arm, which results as a product with the force introduced through the suction pipe torque. The force application points can be determined by the vertical mobility of the compound so that when forward and backward movements of the floor nozzle different torques arise, which have a favorable effect on the suction properties of the nozzle. According to the invention, the connection between the articulated axle and the chassis is designed so that the articulation axis assumes a position below the axis of the rollers during a forward movement of the chassis and a position above the roller axle during a backward movement. By the position of the force application point below the roller axis during forward movement of the chassis, a torque can be generated which reduces the contact force of the suction head on the floor surface and reduces the sliding force in a forward movement. Due to the higher force introduction point, which occurs in a backward movement, a moment can be generated, which counteracts the usually occurring in a backward movement relief of the suction head and has a favorable effect on the dust pickup during a backward movement of the chassis.

Die erfindungsgemäße Verbindung zwischen der Gelenkachse des Saugrohranschlussstückes und dem rückwärtigen Fahrwerksabschnitt wird auf einfache Weise konstruktiv dadurch realisiert, dass die Gelenkachse des Saugrohranschlussstückes endseitig in Führungsausnehmungen vertikal beweglich geführt ist. Die Führungsausnehmungen sind an dem rückwärtigen Fahrwerksabschnitt bzw. einem den rückwärtigen Fahrwerksabschnitt bildenden Laufrollenträger angeordnet und weisen zweckmäßig einen oberen Anschlag und einen unteren Anschlag für die Gelenkachse auf. Die Anschläge sind so festgelegt, dass die Gelenkachse beim Gebrauch der Düse während einer Vorwärtsbewegung des Fahrwerks an dem unteren Anschlag und während einer Rückwärtsbewegung des Fahrwerks an dem oberen Anschlag anliegt. Die Führungsausnehmungen verlaufen senkrecht oder sind unter einem Winkel von maximal 60° zur Senkrechten geneigt. Im Rahmen der Erfindung liegt es auch, dass sie bogenförmig gekrümmt sind.The connection between the joint axis of the Saugrohranschlussstückes and the rear suspension section is structurally realized in a simple manner that the hinge axis of the Saugrohranschlussstückes is guided vertically movable in the guide recesses. The guide recesses are on the rear chassis section and a rear chassis section forming Roller carrier arranged and expediently have an upper stop and a lower stop for the hinge axis. The stops are set so that, when the nozzle is in use, the hinge axis bears against the lower stop during forward movement of the chassis and against the upper stop during rearward movement of the chassis. The guide recesses are perpendicular or inclined at an angle of 60 ° maximum to the vertical. In the context of the invention, it is also that they are arcuately curved.

Die den Saugkopf mit dem Saugrohranschlussstück verbindende Leitung zur Führung der Saugluft ist flexibel ausgebildet, um die mit dem vertikal beweglichen Krafteinleitungspunkt erreichte Kraftverteilung nicht zu behindern und zu beeinflussen. Die Luftführung und die Kraftübertragung werden vorzugsweise funktionstechnisch getrennt. Eine bevorzugte Ausführung der Erfindung sieht vor, dass die flexible Leitung aus einem Wellschlauch oder einem aus Segmenten beweglich zusammengesetzten mehrteiligen Kanal besteht.The suction pipe connecting the suction pipe with the pipe for guiding the suction air is flexible in order not to hinder the force distribution achieved with the vertically movable force application point and to influence. The air duct and the power transmission are preferably functionally separated. A preferred embodiment of the invention provides that the flexible conduit consists of a corrugated hose or a multipart channel movably composed of segments.

Der Saugkopf weist eine Gleitsohle mit einem oder mehreren Saugschlitzen auf, die sich über die Breite des Saugkopfes erstrecken. Die Gleitsohle kann unmittelbar auf der zu reinigenden Fläche aufliegen oder an vorderseitigen Laufrollen abgestützt sein. Bevorzugt ist eine Gleitsohle mit einem einzigen Saugschlitz der sich über die gesamte Breite des Saugkopfes erstreckt und beim Reinigen von textilen Bodenflächen unmittelbar auf der Bodenfläche aufliegt. Zur Reinigung von Glattböden kann der Saugkopf bodenseitig ein- und ausfahrbare Dichtstreifen, z.B. in Form eines Borstenkranzes, in Form von Borstenstreifen oder Dichtungslippen aufweisen.The suction head has a sliding sole with one or more suction slots which extend across the width of the suction head. The sliding sole can rest directly on the surface to be cleaned or be supported on front rollers. Preferably, a sliding sole with a single suction slot which extends over the entire width of the suction head and rests directly on the bottom surface when cleaning textile floor surfaces. For cleaning smooth floors, the suction head can be opened and lowered on the bottom side by sealing strips, e.g. in the form of a bristle ring, in the form of bristle strips or sealing lips.

Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung erläutert. Es zeigen schematisch:

Fig. 1
die Seitenansicht einer Düse für Bodenstaubsauger während einer Vorwärtsbewegung und
Fig. 2
die in Fig. 1 dargestellte Düse während einer Rückwärtsbewegung.
In the following the invention will be explained with reference to a drawing showing only one embodiment. They show schematically:
Fig. 1
the side view of a nozzle for vacuum cleaner during a forward movement and
Fig. 2
in the Fig. 1 illustrated nozzle during a backward movement.

Die in den Figuren dargestellte Bodendüse weist ein Fahrwerk 1 auf, das einen rückwärtigen Fahrwerksabschnitt 2 mit einer Laufrolle 3 bzw. zwei auf einer Achse 4 angeordneten Laufrollen 3 sowie einen in Saugrichtung vorkragenden vorderen Abschnitt 5 zum Anschluss eines Saugkopfes 6 aufweist. Der Saugkopf 6 ist um eine horizontale Achse 7 kippbeweglich an dem vorderen Abschnitt 5 des Fahrwerks gelagert. Ferner ist ein Saugrohranschlussstück 8 vorgesehen, welches um eine horizontale Gelenkachse 9 verschwenkbar an dem Fahrwerk 1 angeordnet ist. Die Gelenkachse 9 des Saugrohranschlussstückes 8 ist durch eine Verbindung 10, welche Schiebekräfte zwischen dem Saugrohranschlussstück 8 und dem Fahrwerk 1 überträgt, vertikal beweglich an den rückwärtigen Fahrwerksabschnitt 2 angeschlossen. Einer vergleichenden Betrachtung der Fig. 1 und 2 entnimmt man, dass die Gelenkachse 9 bei Vorwärts- und Rückwärtsbewegungen des Fahrwerks unterschiedliche Positionen 11, 11' relativ zur Achse 4 der Laufrollen 3 einnimmt. Zur Saugluftführung ist zwischen dem Saugrohranschlussstück 8 und dem Saugkopf 6 eine flexible Leitung 12 vorgesehen, die beispielsweise als Wellschlauch ausgebildet ist oder aus einem aus Segmenten beweglich zusammengesetzten mehrteiligen Kanal bestehen kann.The floor nozzle shown in the figures has a chassis 1, which has a rear chassis section 2 with a roller 3 or two arranged on an axis 4 rollers 3 and a projecting in the suction direction front portion 5 for connecting a suction head 6. The suction head 6 is tiltably mounted about a horizontal axis 7 on the front portion 5 of the chassis. Furthermore, a Saugrohranschlussstück 8 is provided, which is arranged about a horizontal hinge axis 9 pivotally mounted on the chassis 1. The hinge axis 9 of the Saugrohranschlussstückes 8 is connected by a connection 10, which transmits sliding forces between the Saugrohranschlussstück 8 and the chassis 1, vertically movably connected to the rear chassis section 2. A comparative consideration of Fig. 1 and 2 If one assumes that the hinge axis 9 during forward and backward movements of the chassis different positions 11, 11 'relative to the axis 4 of the rollers 3 occupies. For Saugluftführung a flexible conduit 12 is provided between the Saugrohranschlussstück 8 and the suction head 6, which is for example designed as a corrugated hose or may consist of a segmentally movable composite multi-part channel.

Die Verbindung 10 zwischen der Gelenkachse 9 und dem rückwärtigen Fahrwerksabschnitt 2 liegt in einem Bereich, der in Saugrichtung 20 mm vor der Achse 4 der Laufrollen 3 beginnt und 20 mm hinter der Achse der Laufrollen endet. Im Ausführungsbeispiel und gemäß einer bevorzugten Ausführung der Erfindung liegt die Verbindung 10 im Wesentlichen in einer durch die Laufrollenachse 4 verlaufenden vertikalen Ebene.The connection 10 between the hinge axle 9 and the rear chassis section 2 lies in a region which starts in the suction direction 20 mm in front of the axis 4 of the rollers 3 and 20 mm behind the axis of the rollers ends. In the exemplary embodiment and according to a preferred embodiment of the invention, the connection 10 is located substantially in a vertical plane passing through the roller axle 4.

Die Verbindung zwischen der Gelenkachse 9 und dem rückwärtigen Fahrwerksabschnitt 2 überträgt Kräfte, die bei der Handhabung eines an das Saugrohranschlussstück 8 angeschlossenen Saugrohres 13 auftreten und in den Fig. 1 und 2 als Kraftvektoren F1, F2 dargestellt sind. Die Verbindung zwischen der Gelenkachse 9 und dem Fahrwerk 1 ist so ausgebildet, dass die Gelenkachse 9 bei einer Vorwärtsbewegung des Fahrwerks 1 eine Position 11 unterhalb der Achse 4 der Laufrollen 3 einnimmt (Fig. 1) und sich bei einer Rückwärtsbewegung eine Position 11' oberhalb der Laufrollenachse 4 einstellt (Fig. 2). Durch den Abstand der Gelenkachse 9 zur Rollenachse 4 entsteht ein Hebelarm, der als Produkt mit der durch das Saugrohr eingeleiteten Kraft ein Drehmoment ergibt. Bei der Vorwärtsbewegung wird ein Drehmoment erzeugt, welches die Auflagekraft des Saugkopfes 6 auf der Bodenfläche reduziert und dadurch die für die Vorwärtsbewegung aufzubringende Schiebekraft mindert. Während der Rückwärtsbewegung entsteht ein Moment, welches der während der Rückwärtsbewegung auftretenden Entlastung des Saugkopfes 6 entgegenwirkt und sich positiv auf die Staubaufnahme während der Rückwärtsbewegung auswirkt.The connection between the hinge axis 9 and the rear chassis section 2 transmits forces that occur in the handling of a suction pipe connected to the suction pipe 8 suction pipe 13 and in the Fig. 1 and 2 are shown as force vectors F 1 , F 2 . The connection between the hinge axis 9 and the chassis 1 is formed so that the hinge axis 9 assumes a position 11 under a forward movement of the chassis 1 below the axis 4 of the rollers 3 ( Fig. 1 ) and in a backward movement, a position 11 'above the roller axis 4 is set ( Fig. 2 ). Due to the distance between the hinge axis 9 to the roller axis 4, a lever arm is formed which, as a product, results in a torque with the force introduced through the suction tube. In the forward movement, a torque is generated, which reduces the contact force of the suction head 6 on the bottom surface and thereby reduces the applied for the forward movement of sliding force. During the backward movement creates a moment which counteracts the occurring during the backward movement relief of the suction head 6 and has a positive effect on the dust pickup during the backward movement.

Zur Verbindung der Gelenkachse 9 des Saugrohranschlussstückes 8 mit dem rückwärtigen Fahrwerksabschnitt 2 sind Führungsausnehmungen 14 vorgesehen, in denen die Gelenkachse 9 vertikal beweglich geführt ist. Die Führungsausnehmungen 14 sind an einer Wandfläche des rückwärtigen Fahrwerksabschnittes 2 angeordnet. Im Ausführungsbeispiel besteht der rückwärtige Fahrwerksabschnitt 2 aus einem Laufrollenträger, an dem Stege mit den Führungsausnehmungen 14 angeordnet sind. Die Führungsausnehmungen 14 verlaufen im Ausführungsbeispiel senkrecht. Sie können auch unter einem Winkel zur Senkrechten geneigt oder bogenförmig gekrümmt sein. Die Führungsausnehmungen 14 bilden einen oberen Anschlag und einen unteren Anschlag für die Gelenkachse 9 des Saugrohranschlussstückes 8. Beim Gebrauch der Düse liegt die Gelenkachse 9 während einer Vorwärtsbewegung des Fahrwerks an dem unteren Anschlag und während einer Rückwärtsbewegung des Fahrwerks an dem oberen Anschlag an.To connect the hinge axis 9 of the Saugrohranschlussstückes 8 with the rear chassis section 2 guide recesses 14 are provided in which the hinge axis 9 is guided vertically movable. The guide recesses 14 are arranged on a wall surface of the rear chassis section 2. In the exemplary embodiment, the rear chassis section 2 consists of a roller carrier on which webs with the guide recesses 14 are arranged. The guide recesses 14 extend vertical in the embodiment. They may also be inclined at an angle to the vertical or arcuately curved. The guide recesses 14 form an upper stop and a lower stop for the hinge axis 9 of the Saugrohranschlussstückes 8. In use of the nozzle, the hinge axis 9 is during forward movement of the chassis at the lower stop and during a backward movement of the chassis to the upper stop.

Das Saugrohranschlussstück 8 ist in an sich bekannter Weise als Drehgelenk ausgebildet. Es weist ein gekrümmtes Anschlussende 15 sowie einen mit der flexiblen Leitung 12 verbundenen Rohrstutzen 16 auf, der in das gekrümmte Rohranschlussende 15 drehbeweglich eingesetzt ist.The Saugrohranschlussstück 8 is formed in a conventional manner as a rotary joint. It has a curved connection end 15 and a pipe stub 16 connected to the flexible pipe 12, which is inserted in a rotatable manner into the curved pipe connection end 15.

Der Saugkopf 6 weist eine Gleitsohle 17 mit einem oder mehreren Saugschlitzen auf, die sich quer zur Bewegungsrichtung der Bodendüse über die gesamte Breite des Saugkopfes erstrecken. Die Gleitsohle 17 liegt im Ausführungsbeispiel auf der Bodenfläche auf. Es ist nicht ausgeschlossen, dass die Gleitsohle auch an Rollen bodenseitig abgestützt ist. Schließlich können im Saugkopf bodenseitig ein- und ausfahrbare Dichtstreifen vorgesehen sein, die zum Reinigen von glatten Bodenbelägen ausgefahren werden.The suction head 6 has a sliding sole 17 with one or more suction slots, which extend transversely to the direction of movement of the floor nozzle over the entire width of the suction head. The sliding sole 17 is in the embodiment on the bottom surface. It is not excluded that the sliding sole is also supported on rollers on the bottom side. Finally, in the suction head on the bottom side retractable and sealing strips may be provided, which are extended to clean smooth floor coverings.

Claims (7)

  1. A nozzle for floor vacuum cleaner, comprising
    - a chassis (1), which encompasses a rearward chassis section (2) comprising at least one roller (3) and a front section (5), which projects forward in suction direction, for connecting a suction head (6),
    - a suction head (6), which is supported on the front section (5) of the chassis so as to be tiltable about a horizontal axis (7),
    - a suction pipe connection piece (8), which is arranged on the chassis (1) so as to be pivotable about a horizontal joint axis (9), and
    - a flexible line (12) for guiding suction air, which is provided between the suction pipe connection piece (8) and the suction head (6),
    wherein, in response to forwards and rearwards movements of the chassis, the joint axis (9) assumes different positions relative to the axis (4) of the rollers (3) by means of a connection (10), which transfers sliding forces between the suction pipe connection piece (8) and the chassis (1), characterized in that, on the end side, the joint axis (9) is guided in guide recesses (14) on the rearward chassis section (2) so as to be vertically movable and that the joint axis (9) assumes a position (11) below the axis (4) of the rollers in response to a forwards movement of the chassis (1) and assumes a position (11') above the roller axis (4) in response to a rearwards movement.
  2. The nozzle according to claim 1, characterized in that the connection between the joint axis (9) and the rearwards chassis section (2) is located in an area, which, in suction direction, starts 20 mm upstream of the axis (4) of the rollers (3) and ends 20 mm downstream from the axis of the rollers.
  3. The nozzle according to claim 1 or 2, characterized in that the guide recesses (14) form an upper stop and a lower stop for the joint axis (9) and that, in response to using the nozzle, the joint axis (9) rests against the lower stop during a forwards movement of the chassis and rests against the upper stop during a rearwards movement of the chassis.
  4. The nozzle according to one of claims 1 to 3, characterized in that the guide recesses (14) run vertically or are inclined at an angle of maximally 60° to the vertical or are curved in an arch-shaped manner.
  5. The nozzle according to one of claims 1 to 4, characterized in that the flexible line (12) consists of a flexible hose or of a multi-part channel, which is comprised of segments so as to be movable.
  6. The nozzle according to one of claims 1 to 5, characterized in that the suction head encompasses a gliding sole (17) comprising a single suction slit, which extends across the entire width of the suction head.
  7. The nozzle according to one of claims 1 to 6, characterized in that the suction head encompasses retractable and extendable sealing strips on the bottom side.
EP09001365.7A 2008-02-23 2009-01-31 Nozzle for floor vacuum cleaner Active EP2092869B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810010897 DE102008010897A1 (en) 2008-02-23 2008-02-23 Nozzle for vacuum cleaner

Publications (3)

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EP2092869A2 EP2092869A2 (en) 2009-08-26
EP2092869A3 EP2092869A3 (en) 2011-05-04
EP2092869B1 true EP2092869B1 (en) 2015-06-24

Family

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EP09001365.7A Active EP2092869B1 (en) 2008-02-23 2009-01-31 Nozzle for floor vacuum cleaner

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EP (1) EP2092869B1 (en)
CN (1) CN101513335B (en)
DE (1) DE102008010897A1 (en)

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WO2017113505A1 (en) * 2015-12-31 2017-07-06 苏州市伟克斯电器有限公司 Floor brush and vacuum cleaner
US11564544B2 (en) 2020-01-28 2023-01-31 New Ermes Europe S.R.L. Adapter device for a cordless electric vacuum cleaner

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DE102009059178A1 (en) * 2009-12-17 2011-06-22 Miele & Cie. KG, 33332 Floor nozzle for vacuum cleaner
FR2967042B1 (en) * 2010-11-05 2013-01-04 Seb Sa VACUUM SQUEEGEE WITH ROTATING SEAT
DE102011077286A1 (en) * 2011-06-09 2012-12-13 BSH Bosch und Siemens Hausgeräte GmbH Suction nozzle with chassis arrangement
CN107105953A (en) * 2014-12-29 2017-08-29 伊莱克斯公司 The tiltable vacuum cleaner nozzle of flexible stop element
CN105725922A (en) * 2016-04-15 2016-07-06 宁波锦隆电器有限公司 Floor brush of dust collector
ITUA20163223A1 (en) * 2016-05-06 2017-11-06 New Ermes Europe Srl Suction head with improved adherence to the surface to be aspirated
US11224319B2 (en) 2017-12-11 2022-01-18 New Ermes Europe S.R.L. Base plate for a vacuum cleaner suction head for the suction of fine dust and large debris
JP1641037S (en) 2018-09-18 2019-09-09
KR102281134B1 (en) * 2019-08-26 2021-07-26 엘지전자 주식회사 Robot cleaner
USD953673S1 (en) 2020-02-17 2022-05-31 New Ermes Europe S.R.L. Head of a vacuum cleaner
DE102022103372A1 (en) 2022-02-14 2023-08-17 Wessel-Werk Gmbh vacuum cleaner nozzle

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DE2846847C2 (en) 1978-10-27 1985-02-14 Miele & Cie GmbH & Co, 4830 Gütersloh Vacuum cleaner nozzle
EP0304609A1 (en) 1987-07-28 1989-03-01 Siemens Aktiengesellschaft Vacuum cleaner nozzle with a tiltable nozzle body
GB0126494D0 (en) * 2001-11-03 2002-01-02 Dyson Ltd A floor tool
DE102006031486A1 (en) * 2006-07-07 2008-01-10 Wessel-Werk Gmbh Nozzle for vacuum cleaner

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Publication number Priority date Publication date Assignee Title
WO2017113505A1 (en) * 2015-12-31 2017-07-06 苏州市伟克斯电器有限公司 Floor brush and vacuum cleaner
US11564544B2 (en) 2020-01-28 2023-01-31 New Ermes Europe S.R.L. Adapter device for a cordless electric vacuum cleaner

Also Published As

Publication number Publication date
CN101513335B (en) 2013-02-06
EP2092869A2 (en) 2009-08-26
CN101513335A (en) 2009-08-26
DE102008010897A1 (en) 2009-08-27
EP2092869A3 (en) 2011-05-04

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