EP0151739B1 - Vacuum cleaner nozzle - Google Patents

Vacuum cleaner nozzle Download PDF

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Publication number
EP0151739B1
EP0151739B1 EP84115060A EP84115060A EP0151739B1 EP 0151739 B1 EP0151739 B1 EP 0151739B1 EP 84115060 A EP84115060 A EP 84115060A EP 84115060 A EP84115060 A EP 84115060A EP 0151739 B1 EP0151739 B1 EP 0151739B1
Authority
EP
European Patent Office
Prior art keywords
mouthpiece
vacuum cleaner
wheels
pair
runners
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
EP84115060A
Other languages
German (de)
French (fr)
Other versions
EP0151739A2 (en
EP0151739A3 (en
Inventor
Wolfgang Dipl.-Ing. Fleischer (Fh)
Frieder Dr. Voigt
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0151739A2 publication Critical patent/EP0151739A2/en
Publication of EP0151739A3 publication Critical patent/EP0151739A3/en
Application granted granted Critical
Publication of EP0151739B1 publication Critical patent/EP0151739B1/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

Definitions

  • the invention relates to a vacuum cleaner mouthpiece which has a plurality of support surfaces, which are separate from the working edges of the suction opening and are arranged behind the suction opening in the working direction of the mouthpiece, at least one of which consists of a pair of wheels and at least one is adjustable in height.
  • Such a vacuum cleaner mouthpiece is known from US-A-2 240 799.
  • a pair of wheels is provided as a support surface immediately behind the suction opening.
  • Another pair of wheels which also forms a support surface, is arranged on the rear of the mouthpiece housing in a height-adjustable manner.
  • a guide tube for moving the mouthpiece back and forth is articulated on the mouthpiece housing above the pairs of wheels.
  • a vacuum cleaner mouthpiece in which support edges are provided in front of and behind the suction channel provided in the base plate of the mouthpiece. If such a mouthpiece is pressed onto a carpet with too much force, the air flow necessary for the cleaning effect is largely prevented under the support edges.
  • a part of this support edge is designed to be height-adjustable on the front support edge of the mouthpiece. This part is then independent of the respective pressing force exerted on the mouthpiece always with a force dependent on its own weight or a pressing spring on the carpet pile, so that a sufficient air flow is always possible in the area of this part.
  • the rear support edge of this mouthpiece is always loaded with the full pressure exerted on the mouthpiece.
  • the invention has for its object to design a vacuum cleaner mouthpiece according to the type described above so that the depth of penetration of the working edges delimiting the suction opening is optimally adapted to the different floor coverings and cannot be influenced by the force exerted on the mouthpiece.
  • the pair of wheels is arranged coaxially with the pivot axis of a swivel-mounted suction nozzle and, as further support surfaces, two skids, which are narrow compared to the width of the mouthpiece, are arranged outside the width of the pair of wheels and are height-adjustable directly behind the suction opening are.
  • the pushing force exerted on the mouthpiece via the suction pipe connected to the suction nozzle is fully absorbed by the pair of wheels and the skids only need to support the suction opening of the mouthpiece against the force of the negative pressure. Since the skids are arranged directly behind the suction opening, the vacuum force acts only with a small lever arm, so that the skids support the mouthpiece sufficiently despite their small contact surface.
  • the optimal setting of the mouthpiece with different floor coverings is achieved in that the adjustment of the corresponding contact surfaces takes place automatically as a function of the negative pressure prevailing under the mouthpiece.
  • the contact surfaces can always be adjusted so that the same negative pressure is always achieved under the mouthpiece, regardless of the nature of the floor covering.
  • the vacuum cleaner mouthpiece 1 with a vacuum cleaner mouthpiece is designated, which can be connected to a suction pipe via a pivotably articulated suction nozzle 2.
  • the vacuum cleaner mouthpiece 1 has a suction opening 5 delimited by a front working edge 3 and a rear working edge 4.
  • a pair of wheels 7 is arranged coaxially with the swivel axis 6 of the suction nozzle 2. This pair of wheels 7 forms a bearing surface, through which the vertical component of the pushing force exerted on the suction nozzle 1 via the suction pipe connected to the suction nozzle 2 is received.
  • Two skids 8 are arranged directly behind the rear working edge 4 of the suction opening 5. As the view according to FIG.
  • the two skids 8 are narrow in relation to the width of the vacuum cleaner mouthpiece 1 and are arranged outside the width B of the pair of wheels 7 on the housing of the vacuum cleaner mouthpiece 1.
  • the skids 8 are attached to the vacuum cleaner mouthpiece 1, as indicated by arrows 9, in a height-adjustable manner.
  • This height adjustability of the skids 8 can regulate the depth of penetration of the working edges 3 and 4 into the carpet pile will.
  • the suction effect of the vacuum cleaner mouthpiece 1 can be adapted to the nature of the carpet to be vacuumed.

Description

Die Erfindung betrifft ein Staubsaugermundstück, das mehrere, gegenüber den Arbeitskanten der Saugöffnung gesonderte, in Arbeitsrichtung des Mundstückes hinter der Saugöffnung angeordnete Auflageflächen aufweist, von denen mindestens eine aus einem Räderpaar besteht und mindestens eine höhenverstellbar ist.The invention relates to a vacuum cleaner mouthpiece which has a plurality of support surfaces, which are separate from the working edges of the suction opening and are arranged behind the suction opening in the working direction of the mouthpiece, at least one of which consists of a pair of wheels and at least one is adjustable in height.

Ein solches Staubsaugermundstück ist durch die US-A-2 240 799 bekannt. Bei diesem Mundstück ist unmittelbar hinter der Saugöffnung ein Räderpaar als Auflagefläche vorgesehen. Ein weiteres, ebenfalls eine Auflagefläche bildendes Räderpaar ist an der Rückseite des Mundstückgehäuses höhenverstellbar angeordnet. Ein zum Hin- und Herbewegen des Mundstückes dienendes Führungsrohr ist oberhalb der Räderpaare an dem Mundstückgehäuse angelenkt. Infolge dieser konstruktiven Ausbildung des Mundstückes entsteht durch die auf das Mundstück ausgeübte Schiebekraft ein die Saugöffnung gegen die abzusaugende Fläche schwenkendes Drehmoment. Damit wird die Saugöffnung in Abhängigkeit von der Schiebekraft mehr oder weniger stark an die abzusaugende Fläche angedrückt. Infolge der wechselnden Andrückkraft sind mit einem solchen Mundstück keine optimalen Ergebnisse zu erzielen.Such a vacuum cleaner mouthpiece is known from US-A-2 240 799. In this mouthpiece, a pair of wheels is provided as a support surface immediately behind the suction opening. Another pair of wheels, which also forms a support surface, is arranged on the rear of the mouthpiece housing in a height-adjustable manner. A guide tube for moving the mouthpiece back and forth is articulated on the mouthpiece housing above the pairs of wheels. As a result of this design of the mouthpiece, the pushing force exerted on the mouthpiece creates a torque which pivots the suction opening against the surface to be extracted. The suction opening is thus pressed more or less strongly against the surface to be extracted depending on the pushing force. As a result of the changing pressure force, optimal results cannot be achieved with such a mouthpiece.

Durch die DE-A-19 02478 ist ein Staubsaugermundstück bekannt, bei dem vor und hinter dem in der Bodenplatte des Mundstückes vorgesehenen Saugkanals Auflageränder vorgesehen sind. Wird eine solches Mundstück mit zu hoher Kraft auf einen Teppich gedrückt, so wird der für die Reinigungswirkung notwendige Luftstrom unter den Auflagerändern hindurch weitgehend unterbunden. Um auch bei starkem Anpressen des Mundstückes an die abzusaugende Fläche noch einen ausreichenden Luftstrom zu ermöglichen, ist an dem vorderen Auflagerand des Mundstückes ein Teil dieses Auflagerandes höhenverstellbar ausgebildet. Dieser Teil liegt dann unabhängig von der jeweiligen auf das Mundstück ausgeübten Andrückkraft stets mit einer von seinem Eigengewicht oder einer Andrückfeder abhängigen Kraft auf dem Teppichflor auf, so daß im Bereich dieses Teiles immer eine ausreichende Luftströmung möglich ist. Der hintere Auflagerand dieses Mundstückes wird stets mit der vollen, auf das Mundstück ausgeübten Andrückkraft belastet.From DE-A-19 02478 a vacuum cleaner mouthpiece is known in which support edges are provided in front of and behind the suction channel provided in the base plate of the mouthpiece. If such a mouthpiece is pressed onto a carpet with too much force, the air flow necessary for the cleaning effect is largely prevented under the support edges. In order to enable a sufficient air flow even when the mouthpiece is pressed firmly against the surface to be extracted, a part of this support edge is designed to be height-adjustable on the front support edge of the mouthpiece. This part is then independent of the respective pressing force exerted on the mouthpiece always with a force dependent on its own weight or a pressing spring on the carpet pile, so that a sufficient air flow is always possible in the area of this part. The rear support edge of this mouthpiece is always loaded with the full pressure exerted on the mouthpiece.

Der Erfindung liegt die Aufgabe zugrunde, ein Staubsaugermundstück gemäß der eingangs beschriebenen Art so auszubilden, daß die Eindringtiefe der die Saugöffnung begrenzenden Arbeitskanten optimal den unterschiedlichen Bodenbelägen angepaßt und nicht von der auf das Mundstück ausgeübten Kraft beeinflußt werden kann.The invention has for its object to design a vacuum cleaner mouthpiece according to the type described above so that the depth of penetration of the working edges delimiting the suction opening is optimally adapted to the different floor coverings and cannot be influenced by the force exerted on the mouthpiece.

Die Lösung der gestellten Aufgabe gelingt nach der Erfindung dadurch, daß das Räderpaar gleichachsig zur Schwenkachse eines verschwenkbar an dem Mundstück angelenkten Saugstutzens angeordnet ist und als weitere Auflageflächen zwei im Vergleich zur Breite des Mundstückes schmale Gleitkufen außerhalb der Breite des Räderpaares höhenverstellbar unmittelbar hinter der Saugöffnung angeordnet sind. Bei einem solchen Staubsaugermundstück wird die über das an den Saugstutzen angeschlossene Saugrohr auf das Mundstück ausgeübte Schiebekraft voll von dem Räderpaar aufgenommen und die Gleitkufen brauchen die Saugöffnung des Mundstückes nur gegen die Kraft des Unterdruckes abzustützen. Da die Gleitkufen unmittelbar hinter der Saugöffnung angeordnet sind, wirkt die Unterdruckkraft nur mit einem kleinen Hebelarm, so daß die Gleitkufen trotz ihrer kleinen Auflagefläche das Mundstück ausreichend abstützen.The object is achieved according to the invention in that the pair of wheels is arranged coaxially with the pivot axis of a swivel-mounted suction nozzle and, as further support surfaces, two skids, which are narrow compared to the width of the mouthpiece, are arranged outside the width of the pair of wheels and are height-adjustable directly behind the suction opening are. In such a vacuum cleaner mouthpiece, the pushing force exerted on the mouthpiece via the suction pipe connected to the suction nozzle is fully absorbed by the pair of wheels and the skids only need to support the suction opening of the mouthpiece against the force of the negative pressure. Since the skids are arranged directly behind the suction opening, the vacuum force acts only with a small lever arm, so that the skids support the mouthpiece sufficiently despite their small contact surface.

Die optimale Einstellung des Mundstückes bei unterschiedlichen Bodenbelägen wird dadurch erreicht, daß die Verstellung der entsprechenden Auflageflächen selbsttätig in Abhängigkeit von dem unter dem Mundstück herrschenden Unterdruck erfolgt. Dadurch können die Auflageflächen stets so eingestellt werden, daß unabhängig von der jeweiligen Beschaffenheit des Bodenbelages stets der gleiche Unterdruck unter dem Mundstück erzielt wird.The optimal setting of the mouthpiece with different floor coverings is achieved in that the adjustment of the corresponding contact surfaces takes place automatically as a function of the negative pressure prevailing under the mouthpiece. As a result, the contact surfaces can always be adjusted so that the same negative pressure is always achieved under the mouthpiece, regardless of the nature of the floor covering.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels wird der Anmeldungsgegenstand nachfolgend näher beschrieben. Es zeigt

  • Fig. 1 ein Staubsaugermundstück im Schnitt und
  • Fig.2 eine Ansicht der Unterseite des Staubsaugermundstückes.
The subject of the application is described in more detail below using an exemplary embodiment shown in the drawing. It shows
  • Fig. 1 is a vacuum cleaner mouthpiece in section and
  • 2 shows a view of the underside of the vacuum cleaner mouthpiece.

Mit 1 ist ein Staubsaugermundstück bezeichnet, das über einen schwenkbar angelenkten Saugstutzen 2 an ein Saugrohr anschließbar ist. Das Staubsaugermundstück 1 weist einen durch eine vordere Arbeitskante 3 und eine hintere Arbeitskante 4 begrenzte Saugöffnung 5 auf. Gleichachsig zur Schwenkachce 6 des Saugstutzens 2 ist ein Räderpaar 7 angeordnet. Dieses Räderpaar 7 bildet eine Auflagefläche, durch die die vertikale Komponente der über das an den Saugstutzen 2 angeschlossene Saugrohr auf das Saugmundstück 1 ausgeübten Schiebekraft aufgenommen wird. Direkt hinter der hinteren Arbeitskante 4 der Saugöffnung 5 sind zwei Gleitkufen 8 angeordnet. Wie die Ansicht nach Fig. 2 zeigt, sind die beiden Gleitkufen 8 im Verhältnis zur Breite des Staubsaugermundstückes 1 schmal ausgebildet und außerhalb der Breite B des Räderpaares 7 an dem Gehäuse des Staubsaugermundstückes 1 angeordnet. Die Gleitkufen 8 sind an dem Staubsaugermundstück 1, wie durch Pfeile 9 angedeutet, höhenverstellbar befestigt.1 with a vacuum cleaner mouthpiece is designated, which can be connected to a suction pipe via a pivotably articulated suction nozzle 2. The vacuum cleaner mouthpiece 1 has a suction opening 5 delimited by a front working edge 3 and a rear working edge 4. A pair of wheels 7 is arranged coaxially with the swivel axis 6 of the suction nozzle 2. This pair of wheels 7 forms a bearing surface, through which the vertical component of the pushing force exerted on the suction nozzle 1 via the suction pipe connected to the suction nozzle 2 is received. Two skids 8 are arranged directly behind the rear working edge 4 of the suction opening 5. As the view according to FIG. 2 shows, the two skids 8 are narrow in relation to the width of the vacuum cleaner mouthpiece 1 and are arranged outside the width B of the pair of wheels 7 on the housing of the vacuum cleaner mouthpiece 1. The skids 8 are attached to the vacuum cleaner mouthpiece 1, as indicated by arrows 9, in a height-adjustable manner.

Durch diese Höhenverstellbarkeit der Gleitkufen 8 kann die Eindringtiefe der Arbeitskanten 3 und 4 in den Teppichflor reguliert werden. Somit kann die Saugwirkung des Staubsaugermundstückes 1 an die Beschaffenheit des jeweils abzusaugenden Teppichbodens angepaßt werden. Es besteht aber auch die Möglichkeit, die Gleitkufen 8 in ihrer Höhe so zu verstellen, daß eine möglichst kleine Schiebekraft für das Hin- und Herbewegen des Staubsaugermundstückes erforderlich ist.This height adjustability of the skids 8 can regulate the depth of penetration of the working edges 3 and 4 into the carpet pile will. Thus, the suction effect of the vacuum cleaner mouthpiece 1 can be adapted to the nature of the carpet to be vacuumed. But there is also the possibility to adjust the height of the skids 8 so that the smallest possible pushing force is required for the back and forth movement of the vacuum cleaner mouthpiece.

Claims (4)

1. Vacuum cleaner mouthpiece having several support surfaces (7, 8) which are separate with respect to the working edges (3 and 4) of the suction aperture (5) and are arranged behind the suction aperture (5) in the working direction of the mouthpiece (1), at least one of the support surfaces comprising a pair of wheels and at least one being adjustable in height, characterised in that the pair of wheels (7) is arranged on the same axis as the pivot axis (6) of an exhaust connection (2) pivotally joined to the mouthpiece, and in that runners, which are narrow in comparison with the width of the mouthpiece (1), are arranged with adjustable height directly behind the suction aperture (5) outside the width (3) of the pair of wheels as further support surfaces.
2. Vacuum cleaner mouthpiece according to claim 1,
characterised in that the rear working edge (4) is extended as a runner and the two height- adjustable runners (8) are at least partially integrated into this runner.
3. Vacuum cleaner mouthpiece according to claim 2,
characterised in that the adjustment of the runners (8) occurs automatically in dependence on a force acting on the mouthpiece (1).
4. Vacuum cleaner mouthpiece according to claim 3,
characterised in that the adjustment of the runners (8) occurs in dependence on the drop in pressure prevailing under the mouthpiece (1).
EP84115060A 1984-02-13 1984-12-10 Vacuum cleaner nozzle Expired EP0151739B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3405052 1984-02-13
DE19843405052 DE3405052A1 (en) 1984-02-13 1984-02-13 VACUUM CLEANER Mouthpiece

Publications (3)

Publication Number Publication Date
EP0151739A2 EP0151739A2 (en) 1985-08-21
EP0151739A3 EP0151739A3 (en) 1985-10-09
EP0151739B1 true EP0151739B1 (en) 1988-04-27

Family

ID=6227566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115060A Expired EP0151739B1 (en) 1984-02-13 1984-12-10 Vacuum cleaner nozzle

Country Status (2)

Country Link
EP (1) EP0151739B1 (en)
DE (2) DE3405052A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7308729B2 (en) * 2004-02-03 2007-12-18 Shop Vac Corporation Vacuum nozzle head with integral squeegee
FR2965164B1 (en) * 2010-09-24 2012-10-12 Seb Sa VACUUM CLEANER BALANCING SKATE

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240799A (en) * 1936-06-08 1941-05-06 Air Way Electric Appl Corp Vacuum cleaner
US2516205A (en) * 1945-02-15 1950-07-25 Halloek Robert Lay Dual-purpose, wand actuated suction cleaner tool
US2658230A (en) * 1949-11-02 1953-11-10 Hoover Co Nozzle structure for suction cleaning apparatus
DE1902478B2 (en) * 1969-01-18 1971-11-04 SUCTION NOZZLE FOR VACUUM CLEANER
SE334715B (en) * 1969-02-04 1971-05-03 Electrolux Ab
EP0018524A1 (en) * 1979-04-27 1980-11-12 Bosch-Siemens HausgerÀ¤te GmbH Dust sucking nozzle with at least one sucking canal
DE3025977C2 (en) * 1980-07-09 1985-06-13 Allstar Verbrauchsgüter GmbH & Co KG, 6000 Frankfurt Mouthpiece for vacuum cleaner nozzles
DE3100164A1 (en) * 1981-01-07 1982-08-05 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal VACUUM CLEANER NOZZLE

Also Published As

Publication number Publication date
EP0151739A2 (en) 1985-08-21
EP0151739A3 (en) 1985-10-09
DE3470661D1 (en) 1988-06-01
DE3405052A1 (en) 1985-08-14

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